From: Konstantin Serebryany <konstantin.s.serebryany@gmail.com>
To: Jakub Jelinek <jakub@redhat.com>
Cc: Ian Lance Taylor <iant@google.com>,
Dodji Seketeli <dseketel@redhat.com>,
gcc-patches@gcc.gnu.org
Subject: Re: [PATCH] asan_test.cc from llvm
Date: Mon, 03 Dec 2012 07:07:00 -0000 [thread overview]
Message-ID: <CAGQ9bdx8UhtPc3OoYTdx+-VoJxQ5JLdBVWMUv72J4Tf_EpSrmA@mail.gmail.com> (raw)
In-Reply-To: <20121130162525.GH2315@tucnak.redhat.com>
Hi Jakub,
This patch copies the asan tests almost, but not quite, verbatim from upstream.
Since the patch is not in attachment (and gmail messes up with inlined
patches) I can't see the exact changes.
I see #ifdef ASAN_AVOID_EXPENSIVE_TESTS, which I don't really like
because I'd rather fix the test than disable it.
Can we commit the tests 100% verbatim, and then fix them as separate commits
(preferably, by fixing the tests upstream and doing the merge with
libsanitizer/merge.sh)?
And thanks for doing this!
--kcc
On Fri, Nov 30, 2012 at 8:25 PM, Jakub Jelinek <jakub@redhat.com> wrote:
> On Fri, Nov 30, 2012 at 08:21:53AM -0800, Ian Lance Taylor wrote:
>> On Fri, Nov 30, 2012 at 7:59 AM, Jakub Jelinek <jakub@redhat.com> wrote:
>> >
>> > Here is updated patch
>>
>> I don't see a patch.
>
> Here it is for real:
>
> 2012-11-30 Jakub Jelinek <jakub@redhat.com>
>
> * lib/asan-dg.exp (asan_get_gtest_test_list,
> asan_get_gtest_expect_death_list, asan-gtest): New procedures.
> (proc ${tool}_load): Remember [asan_get_gtest_test_list "$output"]
> and [asan_get_gtest_expect_death_list "$output"] in global vars.
> (asan_symbolize): Sanitize [] characters from key.
> * g++.dg/asan/asan_test_config.h: New file.
> * g++.dg/asan/asan_globals_test.cc: New file.
> * g++.dg/asan/asan_test_utils.h: New file.
> * g++.dg/asan/dejagnu-gtest.h: New file.
> * g++.dg/asan/asan_test.cc: New file.
> * g++.dg/asan/asan_test.C: New test.
>
> --- gcc/testsuite/lib/asan-dg.exp.jj 2012-11-30 09:46:57.151595062 +0100
> +++ gcc/testsuite/lib/asan-dg.exp 2012-11-30 16:49:17.718135112 +0100
> @@ -118,14 +118,14 @@ proc asan_symbolize { output } {
> set addr2line_name [find_binutils_prog addr2line]
> set idx 1
> while { $idx < [llength $addresses] } {
> - set key [lindex $addresses $idx]
> + set key [regsub -all "\[\]\[\]" [lindex $addresses $idx] "\\\\&"]
> set val [lindex $addresses [expr $idx + 1]]
> lappend arr($key) $val
> set idx [expr $idx + 3]
> }
> foreach key [array names arr] {
> set args "-f -e $key $arr($key)"
> - set status [remote_exec host "$addr2line_name" $args]
> + set status [remote_exec host "$addr2line_name" "$args"]
> if { [lindex $status 0] > 0 } continue
> regsub -all "\r\n" [lindex $status 1] "\n" addr2line_output
> regsub -all "\[\n\r\]BFD: \[^\n\r\]*" $addr2line_output "" addr2line_output
> @@ -164,6 +164,45 @@ proc asan_symbolize { output } {
> return "$output"
> }
>
> +# Return a list of gtest tests, printed in the form
> +# DEJAGNU_GTEST_TEST AddressSanitizer_SimpleDeathTest
> +# DEJAGNU_GTEST_TEST AddressSanitizer_VariousMallocsTest
> +proc asan_get_gtest_test_list { output } {
> + set idx 0
> + set ret ""
> + while {[regexp -start $idx -indices "DEJAGNU_GTEST_TEST (\[^\n\r\]*)(\r\n|\n|\r)" "$output" -> testname] > 0} {
> + set low [lindex $testname 0]
> + set high [lindex $testname 1]
> + set val [string range "$output" $low $high]
> + lappend ret $val
> + set idx [expr $high + 1]
> + }
> + return $ret
> +}
> +
> +# Return a list of gtest EXPECT_DEATH tests, printed in the form
> +# DEJAGNU_GTEST_EXPECT_DEATH1 statement DEJAGNU_GTEST_EXPECT_DEATH1 regexp DEJAGNU_GTEST_EXPECT_DEATH1
> +# DEJAGNU_GTEST_EXPECT_DEATH2 other statement DEJAGNU_GTEST_EXPECT_DEATH2 other regexp DEJAGNU_GTEST_EXPECT_DEATH2
> +proc asan_get_gtest_expect_death_list { output } {
> + set idx 0
> + set ret ""
> + while {[regexp -start $idx -indices "DEJAGNU_GTEST_EXPECT_DEATH(\[0-9\]*)" "$output" -> id ] > 0} {
> + set low [lindex $id 0]
> + set high [lindex $id 1]
> + set val_id [string range "$output" $low $high]
> + if {[regexp -start $low -indices "$val_id (.*) DEJAGNU_GTEST_EXPECT_DEATH$val_id (.*) DEJAGNU_GTEST_EXPECT_DEATH$val_id\[\n\r\]" "$output" whole statement regexpr ] == 0} { break }
> + set low [lindex $statement 0]
> + set high [lindex $statement 1]
> + set val_statement [string range "$output" $low $high]
> + set low [lindex $regexpr 0]
> + set high [lindex $regexpr 1]
> + set val_regexpr [string range "$output" $low $high]
> + lappend ret [list "$val_id" "$val_statement" "$val_regexpr"]
> + set idx [lindex $whole 1]
> + }
> + return $ret
> +}
> +
> # Replace ${tool}_load with a wrapper so that we can symbolize the output.
> if { [info procs ${tool}_load] != [list] \
> && [info procs saved_asan_${tool}_load] == [list] } {
> @@ -171,10 +210,94 @@ if { [info procs ${tool}_load] != [list]
>
> proc ${tool}_load { program args } {
> global tool
> + global asan_last_gtest_test_list
> + global asan_last_gtest_expect_death_list
> set result [eval [list saved_asan_${tool}_load $program] $args]
> set output [lindex $result 1]
> set symbolized_output [asan_symbolize "$output"]
> + set asan_last_gtest_test_list [asan_get_gtest_test_list "$output"]
> + set asan_last_gtest_expect_death_list [asan_get_gtest_expect_death_list "$output"]
> set result [list [lindex $result 0] $symbolized_output]
> return $result
> }
> }
> +
> +# Utility for running gtest asan emulation under dejagnu, invoked via dg-final.
> +# Call pass if variable has the desired value, otherwise fail.
> +#
> +# Argument 0 handles expected failures and the like
> +proc asan-gtest { args } {
> + global tool
> + global asan_last_gtest_test_list
> + global asan_last_gtest_expect_death_list
> +
> + if { ![info exists asan_last_gtest_test_list] } { return }
> + if { [llength $asan_last_gtest_test_list] == 0 } { return }
> + if { ![isnative] || [is_remote target] } { return }
> +
> + set gtest_test_list $asan_last_gtest_test_list
> + unset asan_last_gtest_test_list
> +
> + if { [llength $args] >= 1 } {
> + switch [dg-process-target [lindex $args 0]] {
> + "S" { }
> + "N" { return }
> + "F" { setup_xfail "*-*-*" }
> + "P" { }
> + }
> + }
> +
> + # This assumes that we are three frames down from dg-test, and that
> + # it still stores the filename of the testcase in a local variable "name".
> + # A cleaner solution would require a new DejaGnu release.
> + upvar 2 name testcase
> + upvar 2 prog prog
> +
> + set output_file "[file rootname [file tail $prog]].exe"
> +
> + foreach gtest $gtest_test_list {
> + set testname "$testcase $gtest"
> + set status -1
> +
> + setenv DEJAGNU_GTEST_ARG "$gtest"
> + set result [${tool}_load ./$output_file $gtest]
> + unsetenv DEJAGNU_GTEST_ARG
> + set status [lindex $result 0]
> + set output [lindex $result 1]
> + if { "$status" == "pass" } {
> + pass "$testname execution test"
> + if { [info exists asan_last_gtest_expect_death_list] } {
> + set gtest_expect_death_list $asan_last_gtest_expect_death_list
> + foreach gtest_death $gtest_expect_death_list {
> + set id [lindex $gtest_death 0]
> + set testname "$testcase $gtest [lindex $gtest_death 1]"
> + set regexpr [lindex $gtest_death 2]
> + set status -1
> +
> + setenv DEJAGNU_GTEST_ARG "$gtest:$id"
> + set result [${tool}_load ./$output_file "$gtest:$id"]
> + unsetenv DEJAGNU_GTEST_ARG
> + set status [lindex $result 0]
> + set output [lindex $result 1]
> + if { "$status" == "fail" } {
> + pass "$testname execution test"
> + if { ![regexp $regexpr ${output}] } {
> + fail "$testname output pattern test, should match $regexpr"
> + } else {
> + pass "$testname output pattern test, $regexpr"
> + }
> + } elseif { "$status" == "pass" } {
> + fail "$testname execution test"
> + } else {
> + $status "$testname execution test"
> + }
> + }
> + }
> + } else {
> + $status "$testname execution test"
> + }
> + unset asan_last_gtest_expect_death_list
> + }
> +
> + return
> +}
> --- gcc/testsuite/g++.dg/asan/asan_test_config.h.jj 2012-11-30 14:22:54.683547075 +0100
> +++ gcc/testsuite/g++.dg/asan/asan_test_config.h 2012-11-30 14:25:00.964802629 +0100
> @@ -0,0 +1,54 @@
> +//===-- asan_test_config.h --------------------------------------*- C++ -*-===//
> +//
> +// This file is distributed under the University of Illinois Open Source
> +// License. See LICENSE.TXT for details.
> +//
> +//===----------------------------------------------------------------------===//
> +//
> +// This file is a part of AddressSanitizer, an address sanity checker.
> +//
> +//===----------------------------------------------------------------------===//
> +#if !defined(INCLUDED_FROM_ASAN_TEST_UTILS_H)
> +# error "This file should be included into asan_test_utils.h only"
> +#endif
> +
> +#ifndef ASAN_TEST_CONFIG_H
> +#define ASAN_TEST_CONFIG_H
> +
> +#include <vector>
> +#include <string>
> +#include <map>
> +
> +#if ASAN_USE_DEJAGNU_GTEST
> +# include "dejagnu-gtest.h"
> +#else
> +# include "gtest/gtest.h"
> +#endif
> +
> +using std::string;
> +using std::vector;
> +using std::map;
> +
> +#ifndef ASAN_UAR
> +# error "please define ASAN_UAR"
> +#endif
> +
> +#ifndef ASAN_HAS_EXCEPTIONS
> +# error "please define ASAN_HAS_EXCEPTIONS"
> +#endif
> +
> +#ifndef ASAN_HAS_BLACKLIST
> +# error "please define ASAN_HAS_BLACKLIST"
> +#endif
> +
> +#ifndef ASAN_NEEDS_SEGV
> +# error "please define ASAN_NEEDS_SEGV"
> +#endif
> +
> +#ifndef ASAN_LOW_MEMORY
> +#define ASAN_LOW_MEMORY 0
> +#endif
> +
> +#define ASAN_PCRE_DOTALL ""
> +
> +#endif // ASAN_TEST_CONFIG_H
> --- gcc/testsuite/g++.dg/asan/asan_globals_test.cc.jj 2012-11-30 14:22:54.684547042 +0100
> +++ gcc/testsuite/g++.dg/asan/asan_globals_test.cc 2012-11-30 14:22:54.684547042 +0100
> @@ -0,0 +1,22 @@
> +//===-- asan_globals_test.cc ----------------------------------------------===//
> +//
> +// This file is distributed under the University of Illinois Open Source
> +// License. See LICENSE.TXT for details.
> +//
> +//===----------------------------------------------------------------------===//
> +//
> +// This file is a part of AddressSanitizer, an address sanity checker.
> +//
> +// Some globals in a separate file.
> +//===----------------------------------------------------------------------===//
> +
> +extern char glob5[5];
> +static char static10[10];
> +
> +int GlobalsTest(int zero) {
> + static char func_static15[15];
> + glob5[zero] = 0;
> + static10[zero] = 0;
> + func_static15[zero] = 0;
> + return glob5[1] + func_static15[2];
> +}
> --- gcc/testsuite/g++.dg/asan/asan_test_utils.h.jj 2012-11-30 14:22:54.684547042 +0100
> +++ gcc/testsuite/g++.dg/asan/asan_test_utils.h 2012-11-30 14:24:35.473954033 +0100
> @@ -0,0 +1,69 @@
> +//===-- asan_test_utils.h ---------------------------------------*- C++ -*-===//
> +//
> +// This file is distributed under the University of Illinois Open Source
> +// License. See LICENSE.TXT for details.
> +//
> +//===----------------------------------------------------------------------===//
> +//
> +// This file is a part of AddressSanitizer, an address sanity checker.
> +//
> +//===----------------------------------------------------------------------===//
> +
> +#ifndef ASAN_TEST_UTILS_H
> +#define ASAN_TEST_UTILS_H
> +
> +#if !defined(ASAN_EXTERNAL_TEST_CONFIG)
> +# define INCLUDED_FROM_ASAN_TEST_UTILS_H
> +# include "asan_test_config.h"
> +# undef INCLUDED_FROM_ASAN_TEST_UTILS_H
> +#endif
> +
> +#if defined(_WIN32)
> +typedef unsigned __int8 uint8_t;
> +typedef unsigned __int16 uint16_t;
> +typedef unsigned __int32 uint32_t;
> +typedef unsigned __int64 uint64_t;
> +typedef __int8 int8_t;
> +typedef __int16 int16_t;
> +typedef __int32 int32_t;
> +typedef __int64 int64_t;
> +# define NOINLINE __declspec(noinline)
> +# define USED
> +#else // defined(_WIN32)
> +# define NOINLINE __attribute__((noinline))
> +# define USED __attribute__((used))
> +#endif // defined(_WIN32)
> +
> +#if !defined(__has_feature)
> +#define __has_feature(x) 0
> +#endif
> +
> +#if __has_feature(address_sanitizer) || defined(__SANITIZE_ADDRESS__)
> +# define ATTRIBUTE_NO_ADDRESS_SAFETY_ANALYSIS \
> + __attribute__((no_address_safety_analysis))
> +#else
> +# define ATTRIBUTE_NO_ADDRESS_SAFETY_ANALYSIS
> +#endif
> +
> +#if __LP64__ || defined(_WIN64)
> +# define SANITIZER_WORDSIZE 64
> +#else
> +# define SANITIZER_WORDSIZE 32
> +#endif
> +
> +// Make the compiler thinks that something is going on there.
> +inline void break_optimization(void *arg) {
> + __asm__ __volatile__ ("" : : "r" (arg) : "memory");
> +}
> +
> +// This function returns its parameter but in such a way that compiler
> +// can not prove it.
> +template<class T>
> +NOINLINE
> +static T Ident(T t) {
> + T ret = t;
> + break_optimization(&ret);
> + return ret;
> +}
> +
> +#endif // ASAN_TEST_UTILS_H
> --- gcc/testsuite/g++.dg/asan/dejagnu-gtest.h.jj 2012-11-30 14:22:54.685547011 +0100
> +++ gcc/testsuite/g++.dg/asan/dejagnu-gtest.h 2012-11-30 14:22:54.000000000 +0100
> @@ -0,0 +1,115 @@
> +#include <stdio.h>
> +#include <stdlib.h>
> +#include <string.h>
> +#include <assert.h>
> +#ifdef __cplusplus
> +#include <string>
> +#endif
> +
> +struct dejagnu_gtest_test
> +{
> + const char *name;
> + void (*fn) (void);
> + struct dejagnu_gtest_test *next;
> +};
> +struct dejagnu_gtest_test *dejagnu_gtest_test_first, *dejagnu_gtest_test_last;
> +int dejagnu_gtest_test_death_num, dejagnu_gtest_test_death_cur_num;
> +
> +#define TEST(cond, name) \
> +static void cond##_##name##_fn (void); \
> +static struct dejagnu_gtest_test cond##_##name##_struct \
> + = { #cond "_" #name, cond##_##name##_fn, NULL }; \
> +static __attribute__((__constructor__)) void \
> +cond##_##name##_ctor (void) \
> +{ \
> + if (strncmp (#name, "DISABLED_", 9) == 0) \
> + return; \
> + if (dejagnu_gtest_test_first == NULL) \
> + dejagnu_gtest_test_first = &cond##_##name##_struct; \
> + else \
> + dejagnu_gtest_test_last->next = &cond##_##name##_struct; \
> + dejagnu_gtest_test_last = &cond##_##name##_struct; \
> +} \
> +static void \
> +cond##_##name##_fn (void)
> +
> +#ifndef __cplusplus
> +# define DEJAGNU_GTEST_TOCSTR(regex) (regex)
> +#else
> +static inline const char *DEJAGNU_GTEST_TOCSTR(const char *x) { return x; }
> +static inline const char *DEJAGNU_GTEST_TOCSTR(const std::string &x) { return x.c_str (); }
> +#endif
> +
> +#define EXPECT_DEATH(statement, regex) \
> +do \
> + { \
> + ++dejagnu_gtest_test_death_cur_num; \
> + if (dejagnu_gtest_test_death_num == 0) \
> + { \
> + fprintf (stderr, "DEJAGNU_GTEST_EXPECT_DEATH%d %s " \
> + "DEJAGNU_GTEST_EXPECT_DEATH%d %s " \
> + "DEJAGNU_GTEST_EXPECT_DEATH%d\n", \
> + dejagnu_gtest_test_death_cur_num, #statement, \
> + dejagnu_gtest_test_death_cur_num, \
> + DEJAGNU_GTEST_TOCSTR (regex), \
> + dejagnu_gtest_test_death_cur_num); \
> + } \
> + else if (dejagnu_gtest_test_death_cur_num \
> + == dejagnu_gtest_test_death_num) \
> + { \
> + statement; \
> + } \
> + } \
> +while (0)
> +
> +#define EXPECT_TRUE(condition) \
> + if (!(condition)) \
> + { \
> + fprintf (stderr, "EXPECT_TRUE failed: " #condition "\n"); \
> + exit (1); \
> + }
> +#define EXPECT_FALSE(condition) EXPECT_TRUE (!condition)
> +#define EXPECT_EQ(expected, actual) EXPECT_TRUE ((expected) == (actual))
> +#define EXPECT_NE(expected, actual) EXPECT_TRUE ((expected) != (actual))
> +#define EXPECT_LT(expected, actual) EXPECT_TRUE ((expected) < (actual))
> +#define EXPECT_LE(expected, actual) EXPECT_TRUE ((expected) <= (actual))
> +#define EXPECT_GT(expected, actual) EXPECT_TRUE ((expected) > (actual))
> +#define EXPECT_GE(expected, actual) EXPECT_TRUE ((expected) >= (actual))
> +#define ASSERT_DEATH(statement, regex) EXPECT_DEATH (statement, regex)
> +#define ASSERT_TRUE(condition) EXPECT_TRUE (condition)
> +#define ASSERT_FALSE(condition) EXPECT_FALSE (condition)
> +#define ASSERT_EQ(expected, actual) EXPECT_EQ (expected, actual)
> +#define ASSERT_NE(expected, actual) EXPECT_NE (expected, actual)
> +#define ASSERT_LT(expected, actual) EXPECT_LT (expected, actual)
> +#define ASSERT_LE(expected, actual) EXPECT_LE (expected, actual)
> +#define ASSERT_GT(expected, actual) EXPECT_GT (expected, actual)
> +#define ASSERT_GE(expected, actual) EXPECT_GE (expected, actual)
> +
> +int
> +main (int argc, const char **argv)
> +{
> + const char *test = NULL;
> + struct dejagnu_gtest_test *t;
> + if (argc > 1)
> + test = argv[1];
> + else
> + test = getenv ("DEJAGNU_GTEST_ARG");
> + if (test == NULL)
> + for (t = dejagnu_gtest_test_first; t; t = t->next)
> + fprintf (stderr, "DEJAGNU_GTEST_TEST %s\n", t->name);
> + else
> + {
> + const char *p = strchr (test, ':');
> + if (p != NULL)
> + dejagnu_gtest_test_death_num = atoi (p + 1);
> + for (t = dejagnu_gtest_test_first; t; t = t->next)
> + if (p != NULL
> + ? (strncmp (test, t->name, p - test) == 0
> + && t->name[p - test] == '\0')
> + : (strcmp (test, t->name) == 0))
> + break;
> + EXPECT_TRUE (t != NULL);
> + t->fn ();
> + }
> + return 0;
> +}
> --- gcc/testsuite/g++.dg/asan/asan_test.C.jj 2012-11-30 14:22:54.687546953 +0100
> +++ gcc/testsuite/g++.dg/asan/asan_test.C 2012-11-30 16:25:08.871338856 +0100
> @@ -0,0 +1,11 @@
> +// { dg-do run { target { { i?86-*-linux* x86_64-*-linux* } && mmap } } }
> +// { dg-skip-if "" { *-*-* } { "*" } { "-O2" } }
> +// { dg-skip-if "" { *-*-* } { "-flto" } { "" } }
> +// { dg-additional-sources "asan_globals_test.cc" }
> +// { dg-options "-fsanitize=address -fno-builtin -Wall -Wno-format -Werror -g -DASAN_UAR=0 -DASAN_HAS_EXCEPTIONS=1 -DASAN_HAS_BLACKLIST=0 -DASAN_USE_DEJAGNU_GTEST=1 -lpthread -ldl" }
> +// { dg-additional-options "-DASAN_NEEDS_SEGV=1" { target { ! arm*-*-* } } }
> +// { dg-additional-options "-DASAN_LOW_MEMORY=1 -DASAN_NEEDS_SEGV=0" { target arm*-*-* } }
> +// { dg-additional-options "-DASAN_AVOID_EXPENSIVE_TESTS=1" { target { ! run_expensive_tests } } }
> +// { dg-final { asan-gtest } }
> +
> +#include "asan_test.cc"
> --- gcc/testsuite/g++.dg/asan/asan_test.cc.jj 2012-11-30 14:26:15.581362813 +0100
> +++ gcc/testsuite/g++.dg/asan/asan_test.cc 2012-11-30 15:52:10.765157241 +0100
> @@ -0,0 +1,2198 @@
> +//===-- asan_test.cc ------------------------------------------------------===//
> +//
> +// This file is distributed under the University of Illinois Open Source
> +// License. See LICENSE.TXT for details.
> +//
> +//===----------------------------------------------------------------------===//
> +//
> +// This file is a part of AddressSanitizer, an address sanity checker.
> +//
> +//===----------------------------------------------------------------------===//
> +#include <stdio.h>
> +#include <signal.h>
> +#include <stdlib.h>
> +#include <string.h>
> +#include <strings.h>
> +#include <pthread.h>
> +#include <stdint.h>
> +#include <setjmp.h>
> +#include <assert.h>
> +
> +#if defined(__i386__) || defined(__x86_64__)
> +#include <emmintrin.h>
> +#endif
> +
> +#include "asan_test_utils.h"
> +
> +#ifndef __APPLE__
> +#include <malloc.h>
> +#else
> +#include <malloc/malloc.h>
> +#include <AvailabilityMacros.h> // For MAC_OS_X_VERSION_*
> +#include <CoreFoundation/CFString.h>
> +#endif // __APPLE__
> +
> +#if ASAN_HAS_EXCEPTIONS
> +# define ASAN_THROW(x) throw (x)
> +#else
> +# define ASAN_THROW(x)
> +#endif
> +
> +#include <sys/mman.h>
> +
> +typedef uint8_t U1;
> +typedef uint16_t U2;
> +typedef uint32_t U4;
> +typedef uint64_t U8;
> +
> +static const int kPageSize = 4096;
> +
> +// Simple stand-alone pseudorandom number generator.
> +// Current algorithm is ANSI C linear congruential PRNG.
> +static inline uint32_t my_rand(uint32_t* state) {
> + return (*state = *state * 1103515245 + 12345) >> 16;
> +}
> +
> +static uint32_t global_seed = 0;
> +
> +const size_t kLargeMalloc = 1 << 24;
> +
> +template<typename T>
> +NOINLINE void asan_write(T *a) {
> + *a = 0;
> +}
> +
> +NOINLINE void asan_write_sized_aligned(uint8_t *p, size_t size) {
> + EXPECT_EQ(0U, ((uintptr_t)p % size));
> + if (size == 1) asan_write((uint8_t*)p);
> + else if (size == 2) asan_write((uint16_t*)p);
> + else if (size == 4) asan_write((uint32_t*)p);
> + else if (size == 8) asan_write((uint64_t*)p);
> +}
> +
> +NOINLINE void *malloc_fff(size_t size) {
> + void *res = malloc/**/(size); break_optimization(0); return res;}
> +NOINLINE void *malloc_eee(size_t size) {
> + void *res = malloc_fff(size); break_optimization(0); return res;}
> +NOINLINE void *malloc_ddd(size_t size) {
> + void *res = malloc_eee(size); break_optimization(0); return res;}
> +NOINLINE void *malloc_ccc(size_t size) {
> + void *res = malloc_ddd(size); break_optimization(0); return res;}
> +NOINLINE void *malloc_bbb(size_t size) {
> + void *res = malloc_ccc(size); break_optimization(0); return res;}
> +NOINLINE void *malloc_aaa(size_t size) {
> + void *res = malloc_bbb(size); break_optimization(0); return res;}
> +
> +#ifndef __APPLE__
> +NOINLINE void *memalign_fff(size_t alignment, size_t size) {
> + void *res = memalign/**/(alignment, size); break_optimization(0); return res;}
> +NOINLINE void *memalign_eee(size_t alignment, size_t size) {
> + void *res = memalign_fff(alignment, size); break_optimization(0); return res;}
> +NOINLINE void *memalign_ddd(size_t alignment, size_t size) {
> + void *res = memalign_eee(alignment, size); break_optimization(0); return res;}
> +NOINLINE void *memalign_ccc(size_t alignment, size_t size) {
> + void *res = memalign_ddd(alignment, size); break_optimization(0); return res;}
> +NOINLINE void *memalign_bbb(size_t alignment, size_t size) {
> + void *res = memalign_ccc(alignment, size); break_optimization(0); return res;}
> +NOINLINE void *memalign_aaa(size_t alignment, size_t size) {
> + void *res = memalign_bbb(alignment, size); break_optimization(0); return res;}
> +#endif // __APPLE__
> +
> +
> +NOINLINE void free_ccc(void *p) { free(p); break_optimization(0);}
> +NOINLINE void free_bbb(void *p) { free_ccc(p); break_optimization(0);}
> +NOINLINE void free_aaa(void *p) { free_bbb(p); break_optimization(0);}
> +
> +template<typename T>
> +NOINLINE void oob_test(int size, int off) {
> + char *p = (char*)malloc_aaa(size);
> + // fprintf(stderr, "writing %d byte(s) into [%p,%p) with offset %d\n",
> + // sizeof(T), p, p + size, off);
> + asan_write((T*)(p + off));
> + free_aaa(p);
> +}
> +
> +
> +template<typename T>
> +NOINLINE void uaf_test(int size, int off) {
> + char *p = (char *)malloc_aaa(size);
> + free_aaa(p);
> + for (int i = 1; i < 100; i++)
> + free_aaa(malloc_aaa(i));
> + fprintf(stderr, "writing %ld byte(s) at %p with offset %d\n",
> + (long)sizeof(T), p, off);
> + asan_write((T*)(p + off));
> +}
> +
> +TEST(AddressSanitizer, HasFeatureAddressSanitizerTest) {
> +#if defined(__has_feature) && __has_feature(address_sanitizer)
> + bool asan = 1;
> +#elif defined(__SANITIZE_ADDRESS__)
> + bool asan = 1;
> +#else
> + bool asan = 0;
> +#endif
> + EXPECT_EQ(true, asan);
> +}
> +
> +TEST(AddressSanitizer, SimpleDeathTest) {
> + EXPECT_DEATH(exit(1), "");
> +}
> +
> +TEST(AddressSanitizer, VariousMallocsTest) {
> + int *a = (int*)malloc(100 * sizeof(int));
> + a[50] = 0;
> + free(a);
> +
> + int *r = (int*)malloc(10);
> + r = (int*)realloc(r, 2000 * sizeof(int));
> + r[1000] = 0;
> + free(r);
> +
> + int *b = new int[100];
> + b[50] = 0;
> + delete [] b;
> +
> + int *c = new int;
> + *c = 0;
> + delete c;
> +
> +#if !defined(__APPLE__) && !defined(ANDROID) && !defined(__ANDROID__)
> + int *pm;
> + int pm_res = posix_memalign((void**)&pm, kPageSize, kPageSize);
> + EXPECT_EQ(0, pm_res);
> + free(pm);
> +#endif
> +
> +#if !defined(__APPLE__)
> + int *ma = (int*)memalign(kPageSize, kPageSize);
> + EXPECT_EQ(0U, (uintptr_t)ma % kPageSize);
> + ma[123] = 0;
> + free(ma);
> +#endif // __APPLE__
> +}
> +
> +TEST(AddressSanitizer, CallocTest) {
> + int *a = (int*)calloc(100, sizeof(int));
> + EXPECT_EQ(0, a[10]);
> + free(a);
> +}
> +
> +TEST(AddressSanitizer, VallocTest) {
> + void *a = valloc(100);
> + EXPECT_EQ(0U, (uintptr_t)a % kPageSize);
> + free(a);
> +}
> +
> +#ifndef __APPLE__
> +TEST(AddressSanitizer, PvallocTest) {
> + char *a = (char*)pvalloc(kPageSize + 100);
> + EXPECT_EQ(0U, (uintptr_t)a % kPageSize);
> + a[kPageSize + 101] = 1; // we should not report an error here.
> + free(a);
> +
> + a = (char*)pvalloc(0); // pvalloc(0) should allocate at least one page.
> + EXPECT_EQ(0U, (uintptr_t)a % kPageSize);
> + a[101] = 1; // we should not report an error here.
> + free(a);
> +}
> +#endif // __APPLE__
> +
> +void *TSDWorker(void *test_key) {
> + if (test_key) {
> + pthread_setspecific(*(pthread_key_t*)test_key, (void*)0xfeedface);
> + }
> + return NULL;
> +}
> +
> +void TSDDestructor(void *tsd) {
> + // Spawning a thread will check that the current thread id is not -1.
> + pthread_t th;
> + pthread_create(&th, NULL, TSDWorker, NULL);
> + pthread_join(th, NULL);
> +}
> +
> +// This tests triggers the thread-specific data destruction fiasco which occurs
> +// if we don't manage the TSD destructors ourselves. We create a new pthread
> +// key with a non-NULL destructor which is likely to be put after the destructor
> +// of AsanThread in the list of destructors.
> +// In this case the TSD for AsanThread will be destroyed before TSDDestructor
> +// is called for the child thread, and a CHECK will fail when we call
> +// pthread_create() to spawn the grandchild.
> +TEST(AddressSanitizer, DISABLED_TSDTest) {
> + pthread_t th;
> + pthread_key_t test_key;
> + pthread_key_create(&test_key, TSDDestructor);
> + pthread_create(&th, NULL, TSDWorker, &test_key);
> + pthread_join(th, NULL);
> + pthread_key_delete(test_key);
> +}
> +
> +template<typename T>
> +void OOBTest() {
> + char expected_str[100];
> + for (int size = sizeof(T); size < 20; size += 5) {
> + for (int i = -5; i < 0; i++) {
> + const char *str =
> + "is located.*%d byte.*to the left";
> + sprintf(expected_str, str, abs(i));
> + EXPECT_DEATH(oob_test<T>(size, i), expected_str);
> + }
> +
> + for (int i = 0; i < (int)(size - sizeof(T) + 1); i++)
> + oob_test<T>(size, i);
> +
> + for (int i = size - sizeof(T) + 1; i <= (int)(size + 3 * sizeof(T)); i++) {
> + const char *str =
> + "is located.*%d byte.*to the right";
> + int off = i >= size ? (i - size) : 0;
> + // we don't catch unaligned partially OOB accesses.
> + if (i % sizeof(T)) continue;
> + sprintf(expected_str, str, off);
> + EXPECT_DEATH(oob_test<T>(size, i), expected_str);
> + }
> + }
> +
> + EXPECT_DEATH(oob_test<T>(kLargeMalloc, -1),
> + "is located.*1 byte.*to the left");
> + EXPECT_DEATH(oob_test<T>(kLargeMalloc, kLargeMalloc),
> + "is located.*0 byte.*to the right");
> +}
> +
> +// TODO(glider): the following tests are EXTREMELY slow on Darwin:
> +// AddressSanitizer.OOB_char (125503 ms)
> +// AddressSanitizer.OOB_int (126890 ms)
> +// AddressSanitizer.OOBRightTest (315605 ms)
> +// AddressSanitizer.SimpleStackTest (366559 ms)
> +
> +TEST(AddressSanitizer, OOB_char) {
> + OOBTest<U1>();
> +}
> +
> +TEST(AddressSanitizer, OOB_int) {
> + OOBTest<U4>();
> +}
> +
> +TEST(AddressSanitizer, OOBRightTest) {
> + for (size_t access_size = 1; access_size <= 8; access_size *= 2) {
> + for (size_t alloc_size = 1; alloc_size <= 8; alloc_size++) {
> + for (size_t offset = 0; offset <= 8; offset += access_size) {
> + void *p = malloc(alloc_size);
> + // allocated: [p, p + alloc_size)
> + // accessed: [p + offset, p + offset + access_size)
> + uint8_t *addr = (uint8_t*)p + offset;
> + if (offset + access_size <= alloc_size) {
> + asan_write_sized_aligned(addr, access_size);
> + } else {
> + int outside_bytes = offset > alloc_size ? (offset - alloc_size) : 0;
> + const char *str =
> + "is located.%d *byte.*to the right";
> + char expected_str[100];
> + sprintf(expected_str, str, outside_bytes);
> + EXPECT_DEATH(asan_write_sized_aligned(addr, access_size),
> + expected_str);
> + }
> + free(p);
> + }
> + }
> + }
> +}
> +
> +TEST(AddressSanitizer, UAF_char) {
> + const char *uaf_string = "AddressSanitizer:.*heap-use-after-free";
> + EXPECT_DEATH(uaf_test<U1>(1, 0), uaf_string);
> + EXPECT_DEATH(uaf_test<U1>(10, 0), uaf_string);
> + EXPECT_DEATH(uaf_test<U1>(10, 10), uaf_string);
> + EXPECT_DEATH(uaf_test<U1>(kLargeMalloc, 0), uaf_string);
> + EXPECT_DEATH(uaf_test<U1>(kLargeMalloc, kLargeMalloc / 2), uaf_string);
> +}
> +
> +#if ASAN_HAS_BLACKLIST
> +TEST(AddressSanitizer, IgnoreTest) {
> + int *x = Ident(new int);
> + delete Ident(x);
> + *x = 0;
> +}
> +#endif // ASAN_HAS_BLACKLIST
> +
> +struct StructWithBitField {
> + int bf1:1;
> + int bf2:1;
> + int bf3:1;
> + int bf4:29;
> +};
> +
> +TEST(AddressSanitizer, BitFieldPositiveTest) {
> + StructWithBitField *x = new StructWithBitField;
> + delete Ident(x);
> + EXPECT_DEATH(x->bf1 = 0, "use-after-free");
> + EXPECT_DEATH(x->bf2 = 0, "use-after-free");
> + EXPECT_DEATH(x->bf3 = 0, "use-after-free");
> + EXPECT_DEATH(x->bf4 = 0, "use-after-free");
> +}
> +
> +struct StructWithBitFields_8_24 {
> + int a:8;
> + int b:24;
> +};
> +
> +TEST(AddressSanitizer, BitFieldNegativeTest) {
> + StructWithBitFields_8_24 *x = Ident(new StructWithBitFields_8_24);
> + x->a = 0;
> + x->b = 0;
> + delete Ident(x);
> +}
> +
> +TEST(AddressSanitizer, OutOfMemoryTest) {
> + size_t size = SANITIZER_WORDSIZE == 64 ? (size_t)(1ULL << 48) : (0xf0000000);
> + EXPECT_EQ(0, realloc(0, size));
> + EXPECT_EQ(0, realloc(0, ~Ident(0)));
> + EXPECT_EQ(0, malloc(size));
> + EXPECT_EQ(0, malloc(~Ident(0)));
> + EXPECT_EQ(0, calloc(1, size));
> + EXPECT_EQ(0, calloc(1, ~Ident(0)));
> +}
> +
> +#if ASAN_NEEDS_SEGV
> +namespace {
> +
> +const char kUnknownCrash[] = "AddressSanitizer: SEGV on unknown address";
> +const char kOverriddenHandler[] = "ASan signal handler has been overridden\n";
> +
> +TEST(AddressSanitizer, WildAddressTest) {
> + char *c = (char*)0x123;
> + EXPECT_DEATH(*c = 0, kUnknownCrash);
> +}
> +
> +void my_sigaction_sighandler(int, siginfo_t*, void*) {
> + fprintf(stderr, kOverriddenHandler);
> + exit(1);
> +}
> +
> +void my_signal_sighandler(int signum) {
> + fprintf(stderr, kOverriddenHandler);
> + exit(1);
> +}
> +
> +TEST(AddressSanitizer, SignalTest) {
> + struct sigaction sigact;
> + memset(&sigact, 0, sizeof(sigact));
> + sigact.sa_sigaction = my_sigaction_sighandler;
> + sigact.sa_flags = SA_SIGINFO;
> + // ASan should silently ignore sigaction()...
> + EXPECT_EQ(0, sigaction(SIGSEGV, &sigact, 0));
> +#ifdef __APPLE__
> + EXPECT_EQ(0, sigaction(SIGBUS, &sigact, 0));
> +#endif
> + char *c = (char*)0x123;
> + EXPECT_DEATH(*c = 0, kUnknownCrash);
> + // ... and signal().
> + EXPECT_EQ(0, signal(SIGSEGV, my_signal_sighandler));
> + EXPECT_DEATH(*c = 0, kUnknownCrash);
> +}
> +} // namespace
> +#endif
> +
> +static void MallocStress(size_t n) {
> + uint32_t seed = my_rand(&global_seed);
> + for (size_t iter = 0; iter < 10; iter++) {
> + vector<void *> vec;
> + for (size_t i = 0; i < n; i++) {
> + if ((i % 3) == 0) {
> + if (vec.empty()) continue;
> + size_t idx = my_rand(&seed) % vec.size();
> + void *ptr = vec[idx];
> + vec[idx] = vec.back();
> + vec.pop_back();
> + free_aaa(ptr);
> + } else {
> + size_t size = my_rand(&seed) % 1000 + 1;
> +#ifndef __APPLE__
> + size_t alignment = 1 << (my_rand(&seed) % 7 + 3);
> + char *ptr = (char*)memalign_aaa(alignment, size);
> +#else
> + char *ptr = (char*) malloc_aaa(size);
> +#endif
> + vec.push_back(ptr);
> + ptr[0] = 0;
> + ptr[size-1] = 0;
> + ptr[size/2] = 0;
> + }
> + }
> + for (size_t i = 0; i < vec.size(); i++)
> + free_aaa(vec[i]);
> + }
> +}
> +
> +TEST(AddressSanitizer, MallocStressTest) {
> + MallocStress((ASAN_LOW_MEMORY) ? 20000 : 200000);
> +}
> +
> +static void TestLargeMalloc(size_t size) {
> + char buff[1024];
> + sprintf(buff, "is located 1 bytes to the left of %lu-byte", (long)size);
> + EXPECT_DEATH(Ident((char*)malloc(size))[-1] = 0, buff);
> +}
> +
> +TEST(AddressSanitizer, LargeMallocTest) {
> + for (int i = 113; i < (1 << 28); i = i * 2 + 13) {
> + TestLargeMalloc(i);
> + }
> +}
> +
> +#if ASAN_LOW_MEMORY != 1
> +TEST(AddressSanitizer, HugeMallocTest) {
> +#ifdef __APPLE__
> + // It was empirically found out that 1215 megabytes is the maximum amount of
> + // memory available to the process under AddressSanitizer on 32-bit Mac 10.6.
> + // 32-bit Mac 10.7 gives even less (< 1G).
> + // (the libSystem malloc() allows allocating up to 2300 megabytes without
> + // ASan).
> + size_t n_megs = SANITIZER_WORDSIZE == 32 ? 500 : 4100;
> +#else
> + size_t n_megs = SANITIZER_WORDSIZE == 32 ? 2600 : 4100;
> +#endif
> + TestLargeMalloc(n_megs << 20);
> +}
> +#endif
> +
> +TEST(AddressSanitizer, ThreadedMallocStressTest) {
> + const int kNumThreads = 4;
> + const int kNumIterations = (ASAN_LOW_MEMORY) ? 10000 : 100000;
> + pthread_t t[kNumThreads];
> + for (int i = 0; i < kNumThreads; i++) {
> + pthread_create(&t[i], 0, (void* (*)(void *x))MallocStress,
> + (void*)kNumIterations);
> + }
> + for (int i = 0; i < kNumThreads; i++) {
> + pthread_join(t[i], 0);
> + }
> +}
> +
> +void *ManyThreadsWorker(void *a) {
> + for (int iter = 0; iter < 100; iter++) {
> + for (size_t size = 100; size < 2000; size *= 2) {
> + free(Ident(malloc(size)));
> + }
> + }
> + return 0;
> +}
> +
> +TEST(AddressSanitizer, ManyThreadsTest) {
> +#ifdef ASAN_AVOID_EXPENSIVE_TESTS
> + const size_t kMaxThreads = 30;
> +#else
> + const size_t kMaxThreads = SANITIZER_WORDSIZE == 32 ? 30 : 1000;
> +#endif
> + pthread_t t[kMaxThreads];
> + size_t kNumThreads = kMaxThreads;
> + for (size_t i = 0; i < kNumThreads; i++) {
> + if (pthread_create(&t[i], 0, (void* (*)(void *x))ManyThreadsWorker, (void*)i))
> + kNumThreads = i;
> + }
> + for (size_t i = 0; i < kNumThreads; i++) {
> + pthread_join(t[i], 0);
> + }
> +}
> +
> +TEST(AddressSanitizer, ReallocTest) {
> + const int kMinElem = 5;
> + int *ptr = (int*)malloc(sizeof(int) * kMinElem);
> + ptr[3] = 3;
> + for (int i = 0; i < 10000; i++) {
> + ptr = (int*)realloc(ptr,
> + (my_rand(&global_seed) % 1000 + kMinElem) * sizeof(int));
> + EXPECT_EQ(3, ptr[3]);
> + }
> +}
> +
> +#ifndef __APPLE__
> +static const char *kMallocUsableSizeErrorMsg =
> + "AddressSanitizer: attempting to call malloc_usable_size()";
> +
> +TEST(AddressSanitizer, MallocUsableSizeTest) {
> + const size_t kArraySize = 100;
> + char *array = Ident((char*)malloc(kArraySize));
> + int *int_ptr = Ident(new int);
> + EXPECT_EQ(0U, malloc_usable_size(NULL));
> + EXPECT_EQ(kArraySize, malloc_usable_size(array));
> + EXPECT_EQ(sizeof(int), malloc_usable_size(int_ptr));
> + EXPECT_DEATH(malloc_usable_size((void*)0x123), kMallocUsableSizeErrorMsg);
> + EXPECT_DEATH(malloc_usable_size(array + kArraySize / 2),
> + kMallocUsableSizeErrorMsg);
> + free(array);
> + EXPECT_DEATH(malloc_usable_size(array), kMallocUsableSizeErrorMsg);
> +}
> +#endif
> +
> +void WrongFree() {
> + int *x = (int*)malloc(100 * sizeof(int));
> + // Use the allocated memory, otherwise Clang will optimize it out.
> + Ident(x);
> + free(x + 1);
> +}
> +
> +TEST(AddressSanitizer, WrongFreeTest) {
> + EXPECT_DEATH(WrongFree(),
> + "ERROR: AddressSanitizer: attempting free.*not malloc");
> +}
> +
> +void DoubleFree() {
> + int *x = (int*)malloc(100 * sizeof(int));
> + fprintf(stderr, "DoubleFree: x=%p\n", x);
> + free(x);
> + free(x);
> + fprintf(stderr, "should have failed in the second free(%p)\n", x);
> + abort();
> +}
> +
> +TEST(AddressSanitizer, DoubleFreeTest) {
> + EXPECT_DEATH(DoubleFree(), ASAN_PCRE_DOTALL
> + "ERROR: AddressSanitizer: attempting double-free"
> + ".*is located 0 bytes inside of 400-byte region"
> + ".*freed by thread T0 here"
> + ".*previously allocated by thread T0 here");
> +}
> +
> +template<int kSize>
> +NOINLINE void SizedStackTest() {
> + char a[kSize];
> + char *A = Ident((char*)&a);
> + for (size_t i = 0; i < kSize; i++)
> + A[i] = i;
> + EXPECT_DEATH(A[-1] = 0, "");
> + EXPECT_DEATH(A[-20] = 0, "");
> + EXPECT_DEATH(A[-31] = 0, "");
> + EXPECT_DEATH(A[kSize] = 0, "");
> + EXPECT_DEATH(A[kSize + 1] = 0, "");
> + EXPECT_DEATH(A[kSize + 10] = 0, "");
> + EXPECT_DEATH(A[kSize + 31] = 0, "");
> +}
> +
> +TEST(AddressSanitizer, SimpleStackTest) {
> + SizedStackTest<1>();
> + SizedStackTest<2>();
> + SizedStackTest<3>();
> + SizedStackTest<4>();
> + SizedStackTest<5>();
> + SizedStackTest<6>();
> + SizedStackTest<7>();
> + SizedStackTest<16>();
> + SizedStackTest<25>();
> + SizedStackTest<34>();
> + SizedStackTest<43>();
> + SizedStackTest<51>();
> + SizedStackTest<62>();
> + SizedStackTest<64>();
> + SizedStackTest<128>();
> +}
> +
> +TEST(AddressSanitizer, ManyStackObjectsTest) {
> + char XXX[10];
> + char YYY[20];
> + char ZZZ[30];
> + Ident(XXX);
> + Ident(YYY);
> + EXPECT_DEATH(Ident(ZZZ)[-1] = 0, ASAN_PCRE_DOTALL "XXX.*YYY.*ZZZ");
> +}
> +
> +NOINLINE static void Frame0(int frame, char *a, char *b, char *c) {
> + char d[4] = {0};
> + char *D = Ident(d);
> + switch (frame) {
> + case 3: a[5]++; break;
> + case 2: b[5]++; break;
> + case 1: c[5]++; break;
> + case 0: D[5]++; break;
> + }
> +}
> +NOINLINE static void Frame1(int frame, char *a, char *b) {
> + char c[4] = {0}; Frame0(frame, a, b, c);
> + break_optimization(0);
> +}
> +NOINLINE static void Frame2(int frame, char *a) {
> + char b[4] = {0}; Frame1(frame, a, b);
> + break_optimization(0);
> +}
> +NOINLINE static void Frame3(int frame) {
> + char a[4] = {0}; Frame2(frame, a);
> + break_optimization(0);
> +}
> +
> +TEST(AddressSanitizer, GuiltyStackFrame0Test) {
> + EXPECT_DEATH(Frame3(0), "located .*in frame <.*Frame0");
> +}
> +TEST(AddressSanitizer, GuiltyStackFrame1Test) {
> + EXPECT_DEATH(Frame3(1), "located .*in frame <.*Frame1");
> +}
> +TEST(AddressSanitizer, GuiltyStackFrame2Test) {
> + EXPECT_DEATH(Frame3(2), "located .*in frame <.*Frame2");
> +}
> +TEST(AddressSanitizer, GuiltyStackFrame3Test) {
> + EXPECT_DEATH(Frame3(3), "located .*in frame <.*Frame3");
> +}
> +
> +NOINLINE void LongJmpFunc1(jmp_buf buf) {
> + // create three red zones for these two stack objects.
> + int a;
> + int b;
> +
> + int *A = Ident(&a);
> + int *B = Ident(&b);
> + *A = *B;
> + longjmp(buf, 1);
> +}
> +
> +NOINLINE void BuiltinLongJmpFunc1(jmp_buf buf) {
> + // create three red zones for these two stack objects.
> + int a;
> + int b;
> +
> + int *A = Ident(&a);
> + int *B = Ident(&b);
> + *A = *B;
> + __builtin_longjmp((void**)buf, 1);
> +}
> +
> +NOINLINE void UnderscopeLongJmpFunc1(jmp_buf buf) {
> + // create three red zones for these two stack objects.
> + int a;
> + int b;
> +
> + int *A = Ident(&a);
> + int *B = Ident(&b);
> + *A = *B;
> + _longjmp(buf, 1);
> +}
> +
> +NOINLINE void SigLongJmpFunc1(sigjmp_buf buf) {
> + // create three red zones for these two stack objects.
> + int a;
> + int b;
> +
> + int *A = Ident(&a);
> + int *B = Ident(&b);
> + *A = *B;
> + siglongjmp(buf, 1);
> +}
> +
> +
> +NOINLINE void TouchStackFunc() {
> + int a[100]; // long array will intersect with redzones from LongJmpFunc1.
> + int *A = Ident(a);
> + for (int i = 0; i < 100; i++)
> + A[i] = i*i;
> +}
> +
> +// Test that we handle longjmp and do not report fals positives on stack.
> +TEST(AddressSanitizer, LongJmpTest) {
> + static jmp_buf buf;
> + if (!setjmp(buf)) {
> + LongJmpFunc1(buf);
> + } else {
> + TouchStackFunc();
> + }
> +}
> +
> +#if not defined(__ANDROID__)
> +TEST(AddressSanitizer, BuiltinLongJmpTest) {
> + static jmp_buf buf;
> + if (!__builtin_setjmp((void**)buf)) {
> + BuiltinLongJmpFunc1(buf);
> + } else {
> + TouchStackFunc();
> + }
> +}
> +#endif // not defined(__ANDROID__)
> +
> +TEST(AddressSanitizer, UnderscopeLongJmpTest) {
> + static jmp_buf buf;
> + if (!_setjmp(buf)) {
> + UnderscopeLongJmpFunc1(buf);
> + } else {
> + TouchStackFunc();
> + }
> +}
> +
> +TEST(AddressSanitizer, SigLongJmpTest) {
> + static sigjmp_buf buf;
> + if (!sigsetjmp(buf, 1)) {
> + SigLongJmpFunc1(buf);
> + } else {
> + TouchStackFunc();
> + }
> +}
> +
> +#ifdef __EXCEPTIONS
> +NOINLINE void ThrowFunc() {
> + // create three red zones for these two stack objects.
> + int a;
> + int b;
> +
> + int *A = Ident(&a);
> + int *B = Ident(&b);
> + *A = *B;
> + ASAN_THROW(1);
> +}
> +
> +TEST(AddressSanitizer, CxxExceptionTest) {
> + if (ASAN_UAR) return;
> + // TODO(kcc): this test crashes on 32-bit for some reason...
> + if (SANITIZER_WORDSIZE == 32) return;
> + try {
> + ThrowFunc();
> + } catch(...) {}
> + TouchStackFunc();
> +}
> +#endif
> +
> +void *ThreadStackReuseFunc1(void *unused) {
> + // create three red zones for these two stack objects.
> + int a;
> + int b;
> +
> + int *A = Ident(&a);
> + int *B = Ident(&b);
> + *A = *B;
> + pthread_exit(0);
> + return 0;
> +}
> +
> +void *ThreadStackReuseFunc2(void *unused) {
> + TouchStackFunc();
> + return 0;
> +}
> +
> +TEST(AddressSanitizer, ThreadStackReuseTest) {
> + pthread_t t;
> + pthread_create(&t, 0, ThreadStackReuseFunc1, 0);
> + pthread_join(t, 0);
> + pthread_create(&t, 0, ThreadStackReuseFunc2, 0);
> + pthread_join(t, 0);
> +}
> +
> +#if defined(__i386__) || defined(__x86_64__)
> +TEST(AddressSanitizer, Store128Test) {
> + char *a = Ident((char*)malloc(Ident(12)));
> + char *p = a;
> + if (((uintptr_t)a % 16) != 0)
> + p = a + 8;
> + assert(((uintptr_t)p % 16) == 0);
> + __m128i value_wide = _mm_set1_epi16(0x1234);
> + EXPECT_DEATH(_mm_store_si128((__m128i*)p, value_wide),
> + "AddressSanitizer: heap-buffer-overflow");
> + EXPECT_DEATH(_mm_store_si128((__m128i*)p, value_wide),
> + "WRITE of size 16");
> + EXPECT_DEATH(_mm_store_si128((__m128i*)p, value_wide),
> + "located 0 bytes to the right of 12-byte");
> + free(a);
> +}
> +#endif
> +
> +static string RightOOBErrorMessage(int oob_distance) {
> + assert(oob_distance >= 0);
> + char expected_str[100];
> + sprintf(expected_str, "located %d bytes to the right", oob_distance);
> + return string(expected_str);
> +}
> +
> +static string LeftOOBErrorMessage(int oob_distance) {
> + assert(oob_distance > 0);
> + char expected_str[100];
> + sprintf(expected_str, "located %d bytes to the left", oob_distance);
> + return string(expected_str);
> +}
> +
> +template<typename T>
> +void MemSetOOBTestTemplate(size_t length) {
> + if (length == 0) return;
> + size_t size = Ident(sizeof(T) * length);
> + T *array = Ident((T*)malloc(size));
> + int element = Ident(42);
> + int zero = Ident(0);
> + // memset interval inside array
> + memset(array, element, size);
> + memset(array, element, size - 1);
> + memset(array + length - 1, element, sizeof(T));
> + memset(array, element, 1);
> +
> + // memset 0 bytes
> + memset(array - 10, element, zero);
> + memset(array - 1, element, zero);
> + memset(array, element, zero);
> + memset(array + length, 0, zero);
> + memset(array + length + 1, 0, zero);
> +
> + // try to memset bytes to the right of array
> + EXPECT_DEATH(memset(array, 0, size + 1),
> + RightOOBErrorMessage(0));
> + EXPECT_DEATH(memset((char*)(array + length) - 1, element, 6),
> + RightOOBErrorMessage(4));
> + EXPECT_DEATH(memset(array + 1, element, size + sizeof(T)),
> + RightOOBErrorMessage(2 * sizeof(T) - 1));
> + // whole interval is to the right
> + EXPECT_DEATH(memset(array + length + 1, 0, 10),
> + RightOOBErrorMessage(sizeof(T)));
> +
> + // try to memset bytes to the left of array
> + EXPECT_DEATH(memset((char*)array - 1, element, size),
> + LeftOOBErrorMessage(1));
> + EXPECT_DEATH(memset((char*)array - 5, 0, 6),
> + LeftOOBErrorMessage(5));
> + EXPECT_DEATH(memset(array - 5, element, size + 5 * sizeof(T)),
> + LeftOOBErrorMessage(5 * sizeof(T)));
> + // whole interval is to the left
> + EXPECT_DEATH(memset(array - 2, 0, sizeof(T)),
> + LeftOOBErrorMessage(2 * sizeof(T)));
> +
> + // try to memset bytes both to the left & to the right
> + EXPECT_DEATH(memset((char*)array - 2, element, size + 4),
> + LeftOOBErrorMessage(2));
> +
> + free(array);
> +}
> +
> +TEST(AddressSanitizer, MemSetOOBTest) {
> + MemSetOOBTestTemplate<char>(100);
> + MemSetOOBTestTemplate<int>(5);
> + MemSetOOBTestTemplate<double>(256);
> + // We can test arrays of structres/classes here, but what for?
> +}
> +
> +// Same test for memcpy and memmove functions
> +template <typename T, class M>
> +void MemTransferOOBTestTemplate(size_t length) {
> + if (length == 0) return;
> + size_t size = Ident(sizeof(T) * length);
> + T *src = Ident((T*)malloc(size));
> + T *dest = Ident((T*)malloc(size));
> + int zero = Ident(0);
> +
> + // valid transfer of bytes between arrays
> + M::transfer(dest, src, size);
> + M::transfer(dest + 1, src, size - sizeof(T));
> + M::transfer(dest, src + length - 1, sizeof(T));
> + M::transfer(dest, src, 1);
> +
> + // transfer zero bytes
> + M::transfer(dest - 1, src, 0);
> + M::transfer(dest + length, src, zero);
> + M::transfer(dest, src - 1, zero);
> + M::transfer(dest, src, zero);
> +
> + // try to change mem to the right of dest
> + EXPECT_DEATH(M::transfer(dest + 1, src, size),
> + RightOOBErrorMessage(sizeof(T) - 1));
> + EXPECT_DEATH(M::transfer((char*)(dest + length) - 1, src, 5),
> + RightOOBErrorMessage(3));
> +
> + // try to change mem to the left of dest
> + EXPECT_DEATH(M::transfer(dest - 2, src, size),
> + LeftOOBErrorMessage(2 * sizeof(T)));
> + EXPECT_DEATH(M::transfer((char*)dest - 3, src, 4),
> + LeftOOBErrorMessage(3));
> +
> + // try to access mem to the right of src
> + EXPECT_DEATH(M::transfer(dest, src + 2, size),
> + RightOOBErrorMessage(2 * sizeof(T) - 1));
> + EXPECT_DEATH(M::transfer(dest, (char*)(src + length) - 3, 6),
> + RightOOBErrorMessage(2));
> +
> + // try to access mem to the left of src
> + EXPECT_DEATH(M::transfer(dest, src - 1, size),
> + LeftOOBErrorMessage(sizeof(T)));
> + EXPECT_DEATH(M::transfer(dest, (char*)src - 6, 7),
> + LeftOOBErrorMessage(6));
> +
> + // Generally we don't need to test cases where both accessing src and writing
> + // to dest address to poisoned memory.
> +
> + T *big_src = Ident((T*)malloc(size * 2));
> + T *big_dest = Ident((T*)malloc(size * 2));
> + // try to change mem to both sides of dest
> + EXPECT_DEATH(M::transfer(dest - 1, big_src, size * 2),
> + LeftOOBErrorMessage(sizeof(T)));
> + // try to access mem to both sides of src
> + EXPECT_DEATH(M::transfer(big_dest, src - 2, size * 2),
> + LeftOOBErrorMessage(2 * sizeof(T)));
> +
> + free(src);
> + free(dest);
> + free(big_src);
> + free(big_dest);
> +}
> +
> +class MemCpyWrapper {
> + public:
> + static void* transfer(void *to, const void *from, size_t size) {
> + return memcpy(to, from, size);
> + }
> +};
> +TEST(AddressSanitizer, MemCpyOOBTest) {
> + MemTransferOOBTestTemplate<char, MemCpyWrapper>(100);
> + MemTransferOOBTestTemplate<int, MemCpyWrapper>(1024);
> +}
> +
> +class MemMoveWrapper {
> + public:
> + static void* transfer(void *to, const void *from, size_t size) {
> + return memmove(to, from, size);
> + }
> +};
> +TEST(AddressSanitizer, MemMoveOOBTest) {
> + MemTransferOOBTestTemplate<char, MemMoveWrapper>(100);
> + MemTransferOOBTestTemplate<int, MemMoveWrapper>(1024);
> +}
> +
> +// Tests for string functions
> +
> +// Used for string functions tests
> +static char global_string[] = "global";
> +static size_t global_string_length = 6;
> +
> +// Input to a test is a zero-terminated string str with given length
> +// Accesses to the bytes to the left and to the right of str
> +// are presumed to produce OOB errors
> +void StrLenOOBTestTemplate(char *str, size_t length, bool is_global) {
> + // Normal strlen calls
> + EXPECT_EQ(strlen(str), length);
> + if (length > 0) {
> + EXPECT_EQ(length - 1, strlen(str + 1));
> + EXPECT_EQ(0U, strlen(str + length));
> + }
> + // Arg of strlen is not malloced, OOB access
> + if (!is_global) {
> + // We don't insert RedZones to the left of global variables
> + EXPECT_DEATH(Ident(strlen(str - 1)), LeftOOBErrorMessage(1));
> + EXPECT_DEATH(Ident(strlen(str - 5)), LeftOOBErrorMessage(5));
> + }
> + EXPECT_DEATH(Ident(strlen(str + length + 1)), RightOOBErrorMessage(0));
> + // Overwrite terminator
> + str[length] = 'a';
> + // String is not zero-terminated, strlen will lead to OOB access
> + EXPECT_DEATH(Ident(strlen(str)), RightOOBErrorMessage(0));
> + EXPECT_DEATH(Ident(strlen(str + length)), RightOOBErrorMessage(0));
> + // Restore terminator
> + str[length] = 0;
> +}
> +TEST(AddressSanitizer, StrLenOOBTest) {
> + // Check heap-allocated string
> + size_t length = Ident(10);
> + char *heap_string = Ident((char*)malloc(length + 1));
> + char stack_string[10 + 1];
> + break_optimization(&stack_string);
> + for (size_t i = 0; i < length; i++) {
> + heap_string[i] = 'a';
> + stack_string[i] = 'b';
> + }
> + heap_string[length] = 0;
> + stack_string[length] = 0;
> + StrLenOOBTestTemplate(heap_string, length, false);
> + // TODO(samsonov): Fix expected messages in StrLenOOBTestTemplate to
> + // make test for stack_string work. Or move it to output tests.
> + // StrLenOOBTestTemplate(stack_string, length, false);
> + StrLenOOBTestTemplate(global_string, global_string_length, true);
> + free(heap_string);
> +}
> +
> +static inline char* MallocAndMemsetString(size_t size, char ch) {
> + char *s = Ident((char*)malloc(size));
> + memset(s, ch, size);
> + return s;
> +}
> +static inline char* MallocAndMemsetString(size_t size) {
> + return MallocAndMemsetString(size, 'z');
> +}
> +
> +#ifndef __APPLE__
> +TEST(AddressSanitizer, StrNLenOOBTest) {
> + size_t size = Ident(123);
> + char *str = MallocAndMemsetString(size);
> + // Normal strnlen calls.
> + Ident(strnlen(str - 1, 0));
> + Ident(strnlen(str, size));
> + Ident(strnlen(str + size - 1, 1));
> + str[size - 1] = '\0';
> + Ident(strnlen(str, 2 * size));
> + // Argument points to not allocated memory.
> + EXPECT_DEATH(Ident(strnlen(str - 1, 1)), LeftOOBErrorMessage(1));
> + EXPECT_DEATH(Ident(strnlen(str + size, 1)), RightOOBErrorMessage(0));
> + // Overwrite the terminating '\0' and hit unallocated memory.
> + str[size - 1] = 'z';
> + EXPECT_DEATH(Ident(strnlen(str, size + 1)), RightOOBErrorMessage(0));
> + free(str);
> +}
> +#endif
> +
> +TEST(AddressSanitizer, StrDupOOBTest) {
> + size_t size = Ident(42);
> + char *str = MallocAndMemsetString(size);
> + char *new_str;
> + // Normal strdup calls.
> + str[size - 1] = '\0';
> + new_str = strdup(str);
> + free(new_str);
> + new_str = strdup(str + size - 1);
> + free(new_str);
> + // Argument points to not allocated memory.
> + EXPECT_DEATH(Ident(strdup(str - 1)), LeftOOBErrorMessage(1));
> + EXPECT_DEATH(Ident(strdup(str + size)), RightOOBErrorMessage(0));
> + // Overwrite the terminating '\0' and hit unallocated memory.
> + str[size - 1] = 'z';
> + EXPECT_DEATH(Ident(strdup(str)), RightOOBErrorMessage(0));
> + free(str);
> +}
> +
> +TEST(AddressSanitizer, StrCpyOOBTest) {
> + size_t to_size = Ident(30);
> + size_t from_size = Ident(6); // less than to_size
> + char *to = Ident((char*)malloc(to_size));
> + char *from = Ident((char*)malloc(from_size));
> + // Normal strcpy calls.
> + strcpy(from, "hello");
> + strcpy(to, from);
> + strcpy(to + to_size - from_size, from);
> + // Length of "from" is too small.
> + EXPECT_DEATH(Ident(strcpy(from, "hello2")), RightOOBErrorMessage(0));
> + // "to" or "from" points to not allocated memory.
> + EXPECT_DEATH(Ident(strcpy(to - 1, from)), LeftOOBErrorMessage(1));
> + EXPECT_DEATH(Ident(strcpy(to, from - 1)), LeftOOBErrorMessage(1));
> + EXPECT_DEATH(Ident(strcpy(to, from + from_size)), RightOOBErrorMessage(0));
> + EXPECT_DEATH(Ident(strcpy(to + to_size, from)), RightOOBErrorMessage(0));
> + // Overwrite the terminating '\0' character and hit unallocated memory.
> + from[from_size - 1] = '!';
> + EXPECT_DEATH(Ident(strcpy(to, from)), RightOOBErrorMessage(0));
> + free(to);
> + free(from);
> +}
> +
> +TEST(AddressSanitizer, StrNCpyOOBTest) {
> + size_t to_size = Ident(20);
> + size_t from_size = Ident(6); // less than to_size
> + char *to = Ident((char*)malloc(to_size));
> + // From is a zero-terminated string "hello\0" of length 6
> + char *from = Ident((char*)malloc(from_size));
> + strcpy(from, "hello");
> + // copy 0 bytes
> + strncpy(to, from, 0);
> + strncpy(to - 1, from - 1, 0);
> + // normal strncpy calls
> + strncpy(to, from, from_size);
> + strncpy(to, from, to_size);
> + strncpy(to, from + from_size - 1, to_size);
> + strncpy(to + to_size - 1, from, 1);
> + // One of {to, from} points to not allocated memory
> + EXPECT_DEATH(Ident(strncpy(to, from - 1, from_size)),
> + LeftOOBErrorMessage(1));
> + EXPECT_DEATH(Ident(strncpy(to - 1, from, from_size)),
> + LeftOOBErrorMessage(1));
> + EXPECT_DEATH(Ident(strncpy(to, from + from_size, 1)),
> + RightOOBErrorMessage(0));
> + EXPECT_DEATH(Ident(strncpy(to + to_size, from, 1)),
> + RightOOBErrorMessage(0));
> + // Length of "to" is too small
> + EXPECT_DEATH(Ident(strncpy(to + to_size - from_size + 1, from, from_size)),
> + RightOOBErrorMessage(0));
> + EXPECT_DEATH(Ident(strncpy(to + 1, from, to_size)),
> + RightOOBErrorMessage(0));
> + // Overwrite terminator in from
> + from[from_size - 1] = '!';
> + // normal strncpy call
> + strncpy(to, from, from_size);
> + // Length of "from" is too small
> + EXPECT_DEATH(Ident(strncpy(to, from, to_size)),
> + RightOOBErrorMessage(0));
> + free(to);
> + free(from);
> +}
> +
> +// Users may have different definitions of "strchr" and "index", so provide
> +// function pointer typedefs and overload RunStrChrTest implementation.
> +// We can't use macro for RunStrChrTest body here, as this macro would
> +// confuse EXPECT_DEATH gtest macro.
> +typedef char*(*PointerToStrChr1)(const char*, int);
> +typedef char*(*PointerToStrChr2)(char*, int);
> +
> +USED static void RunStrChrTest(PointerToStrChr1 StrChr) {
> + size_t size = Ident(100);
> + char *str = MallocAndMemsetString(size);
> + str[10] = 'q';
> + str[11] = '\0';
> + EXPECT_EQ(str, StrChr(str, 'z'));
> + EXPECT_EQ(str + 10, StrChr(str, 'q'));
> + EXPECT_EQ(NULL, StrChr(str, 'a'));
> + // StrChr argument points to not allocated memory.
> + EXPECT_DEATH(Ident(StrChr(str - 1, 'z')), LeftOOBErrorMessage(1));
> + EXPECT_DEATH(Ident(StrChr(str + size, 'z')), RightOOBErrorMessage(0));
> + // Overwrite the terminator and hit not allocated memory.
> + str[11] = 'z';
> + EXPECT_DEATH(Ident(StrChr(str, 'a')), RightOOBErrorMessage(0));
> + free(str);
> +}
> +USED static void RunStrChrTest(PointerToStrChr2 StrChr) {
> + size_t size = Ident(100);
> + char *str = MallocAndMemsetString(size);
> + str[10] = 'q';
> + str[11] = '\0';
> + EXPECT_EQ(str, StrChr(str, 'z'));
> + EXPECT_EQ(str + 10, StrChr(str, 'q'));
> + EXPECT_EQ(NULL, StrChr(str, 'a'));
> + // StrChr argument points to not allocated memory.
> + EXPECT_DEATH(Ident(StrChr(str - 1, 'z')), LeftOOBErrorMessage(1));
> + EXPECT_DEATH(Ident(StrChr(str + size, 'z')), RightOOBErrorMessage(0));
> + // Overwrite the terminator and hit not allocated memory.
> + str[11] = 'z';
> + EXPECT_DEATH(Ident(StrChr(str, 'a')), RightOOBErrorMessage(0));
> + free(str);
> +}
> +
> +TEST(AddressSanitizer, StrChrAndIndexOOBTest) {
> + RunStrChrTest(&strchr);
> + RunStrChrTest(&index);
> +}
> +
> +TEST(AddressSanitizer, StrCmpAndFriendsLogicTest) {
> + // strcmp
> + EXPECT_EQ(0, strcmp("", ""));
> + EXPECT_EQ(0, strcmp("abcd", "abcd"));
> + EXPECT_GT(0, strcmp("ab", "ac"));
> + EXPECT_GT(0, strcmp("abc", "abcd"));
> + EXPECT_LT(0, strcmp("acc", "abc"));
> + EXPECT_LT(0, strcmp("abcd", "abc"));
> +
> + // strncmp
> + EXPECT_EQ(0, strncmp("a", "b", 0));
> + EXPECT_EQ(0, strncmp("abcd", "abcd", 10));
> + EXPECT_EQ(0, strncmp("abcd", "abcef", 3));
> + EXPECT_GT(0, strncmp("abcde", "abcfa", 4));
> + EXPECT_GT(0, strncmp("a", "b", 5));
> + EXPECT_GT(0, strncmp("bc", "bcde", 4));
> + EXPECT_LT(0, strncmp("xyz", "xyy", 10));
> + EXPECT_LT(0, strncmp("baa", "aaa", 1));
> + EXPECT_LT(0, strncmp("zyx", "", 2));
> +
> + // strcasecmp
> + EXPECT_EQ(0, strcasecmp("", ""));
> + EXPECT_EQ(0, strcasecmp("zzz", "zzz"));
> + EXPECT_EQ(0, strcasecmp("abCD", "ABcd"));
> + EXPECT_GT(0, strcasecmp("aB", "Ac"));
> + EXPECT_GT(0, strcasecmp("ABC", "ABCd"));
> + EXPECT_LT(0, strcasecmp("acc", "abc"));
> + EXPECT_LT(0, strcasecmp("ABCd", "abc"));
> +
> + // strncasecmp
> + EXPECT_EQ(0, strncasecmp("a", "b", 0));
> + EXPECT_EQ(0, strncasecmp("abCD", "ABcd", 10));
> + EXPECT_EQ(0, strncasecmp("abCd", "ABcef", 3));
> + EXPECT_GT(0, strncasecmp("abcde", "ABCfa", 4));
> + EXPECT_GT(0, strncasecmp("a", "B", 5));
> + EXPECT_GT(0, strncasecmp("bc", "BCde", 4));
> + EXPECT_LT(0, strncasecmp("xyz", "xyy", 10));
> + EXPECT_LT(0, strncasecmp("Baa", "aaa", 1));
> + EXPECT_LT(0, strncasecmp("zyx", "", 2));
> +
> + // memcmp
> + EXPECT_EQ(0, memcmp("a", "b", 0));
> + EXPECT_EQ(0, memcmp("ab\0c", "ab\0c", 4));
> + EXPECT_GT(0, memcmp("\0ab", "\0ac", 3));
> + EXPECT_GT(0, memcmp("abb\0", "abba", 4));
> + EXPECT_LT(0, memcmp("ab\0cd", "ab\0c\0", 5));
> + EXPECT_LT(0, memcmp("zza", "zyx", 3));
> +}
> +
> +typedef int(*PointerToStrCmp)(const char*, const char*);
> +void RunStrCmpTest(PointerToStrCmp StrCmp) {
> + size_t size = Ident(100);
> + char *s1 = MallocAndMemsetString(size);
> + char *s2 = MallocAndMemsetString(size);
> + s1[size - 1] = '\0';
> + s2[size - 1] = '\0';
> + // Normal StrCmp calls
> + Ident(StrCmp(s1, s2));
> + Ident(StrCmp(s1, s2 + size - 1));
> + Ident(StrCmp(s1 + size - 1, s2 + size - 1));
> + s1[size - 1] = 'z';
> + s2[size - 1] = 'x';
> + Ident(StrCmp(s1, s2));
> + // One of arguments points to not allocated memory.
> + EXPECT_DEATH(Ident(StrCmp)(s1 - 1, s2), LeftOOBErrorMessage(1));
> + EXPECT_DEATH(Ident(StrCmp)(s1, s2 - 1), LeftOOBErrorMessage(1));
> + EXPECT_DEATH(Ident(StrCmp)(s1 + size, s2), RightOOBErrorMessage(0));
> + EXPECT_DEATH(Ident(StrCmp)(s1, s2 + size), RightOOBErrorMessage(0));
> + // Hit unallocated memory and die.
> + s2[size - 1] = 'z';
> + EXPECT_DEATH(Ident(StrCmp)(s1, s1), RightOOBErrorMessage(0));
> + EXPECT_DEATH(Ident(StrCmp)(s1 + size - 1, s2), RightOOBErrorMessage(0));
> + free(s1);
> + free(s2);
> +}
> +
> +TEST(AddressSanitizer, StrCmpOOBTest) {
> + RunStrCmpTest(&strcmp);
> +}
> +
> +TEST(AddressSanitizer, StrCaseCmpOOBTest) {
> + RunStrCmpTest(&strcasecmp);
> +}
> +
> +typedef int(*PointerToStrNCmp)(const char*, const char*, size_t);
> +void RunStrNCmpTest(PointerToStrNCmp StrNCmp) {
> + size_t size = Ident(100);
> + char *s1 = MallocAndMemsetString(size);
> + char *s2 = MallocAndMemsetString(size);
> + s1[size - 1] = '\0';
> + s2[size - 1] = '\0';
> + // Normal StrNCmp calls
> + Ident(StrNCmp(s1, s2, size + 2));
> + s1[size - 1] = 'z';
> + s2[size - 1] = 'x';
> + Ident(StrNCmp(s1 + size - 2, s2 + size - 2, size));
> + s2[size - 1] = 'z';
> + Ident(StrNCmp(s1 - 1, s2 - 1, 0));
> + Ident(StrNCmp(s1 + size - 1, s2 + size - 1, 1));
> + // One of arguments points to not allocated memory.
> + EXPECT_DEATH(Ident(StrNCmp)(s1 - 1, s2, 1), LeftOOBErrorMessage(1));
> + EXPECT_DEATH(Ident(StrNCmp)(s1, s2 - 1, 1), LeftOOBErrorMessage(1));
> + EXPECT_DEATH(Ident(StrNCmp)(s1 + size, s2, 1), RightOOBErrorMessage(0));
> + EXPECT_DEATH(Ident(StrNCmp)(s1, s2 + size, 1), RightOOBErrorMessage(0));
> + // Hit unallocated memory and die.
> + EXPECT_DEATH(Ident(StrNCmp)(s1 + 1, s2 + 1, size), RightOOBErrorMessage(0));
> + EXPECT_DEATH(Ident(StrNCmp)(s1 + size - 1, s2, 2), RightOOBErrorMessage(0));
> + free(s1);
> + free(s2);
> +}
> +
> +TEST(AddressSanitizer, StrNCmpOOBTest) {
> + RunStrNCmpTest(&strncmp);
> +}
> +
> +TEST(AddressSanitizer, StrNCaseCmpOOBTest) {
> + RunStrNCmpTest(&strncasecmp);
> +}
> +
> +TEST(AddressSanitizer, MemCmpOOBTest) {
> + size_t size = Ident(100);
> + char *s1 = MallocAndMemsetString(size);
> + char *s2 = MallocAndMemsetString(size);
> + // Normal memcmp calls.
> + Ident(memcmp(s1, s2, size));
> + Ident(memcmp(s1 + size - 1, s2 + size - 1, 1));
> + Ident(memcmp(s1 - 1, s2 - 1, 0));
> + // One of arguments points to not allocated memory.
> + EXPECT_DEATH(Ident(memcmp)(s1 - 1, s2, 1), LeftOOBErrorMessage(1));
> + EXPECT_DEATH(Ident(memcmp)(s1, s2 - 1, 1), LeftOOBErrorMessage(1));
> + EXPECT_DEATH(Ident(memcmp)(s1 + size, s2, 1), RightOOBErrorMessage(0));
> + EXPECT_DEATH(Ident(memcmp)(s1, s2 + size, 1), RightOOBErrorMessage(0));
> + // Hit unallocated memory and die.
> + EXPECT_DEATH(Ident(memcmp)(s1 + 1, s2 + 1, size), RightOOBErrorMessage(0));
> + EXPECT_DEATH(Ident(memcmp)(s1 + size - 1, s2, 2), RightOOBErrorMessage(0));
> + // Zero bytes are not terminators and don't prevent from OOB.
> + s1[size - 1] = '\0';
> + s2[size - 1] = '\0';
> + EXPECT_DEATH(Ident(memcmp)(s1, s2, size + 1), RightOOBErrorMessage(0));
> + free(s1);
> + free(s2);
> +}
> +
> +TEST(AddressSanitizer, StrCatOOBTest) {
> + size_t to_size = Ident(100);
> + char *to = MallocAndMemsetString(to_size);
> + to[0] = '\0';
> + size_t from_size = Ident(20);
> + char *from = MallocAndMemsetString(from_size);
> + from[from_size - 1] = '\0';
> + // Normal strcat calls.
> + strcat(to, from);
> + strcat(to, from);
> + strcat(to + from_size, from + from_size - 2);
> + // Passing an invalid pointer is an error even when concatenating an empty
> + // string.
> + EXPECT_DEATH(strcat(to - 1, from + from_size - 1), LeftOOBErrorMessage(1));
> + // One of arguments points to not allocated memory.
> + EXPECT_DEATH(strcat(to - 1, from), LeftOOBErrorMessage(1));
> + EXPECT_DEATH(strcat(to, from - 1), LeftOOBErrorMessage(1));
> + EXPECT_DEATH(strcat(to + to_size, from), RightOOBErrorMessage(0));
> + EXPECT_DEATH(strcat(to, from + from_size), RightOOBErrorMessage(0));
> +
> + // "from" is not zero-terminated.
> + from[from_size - 1] = 'z';
> + EXPECT_DEATH(strcat(to, from), RightOOBErrorMessage(0));
> + from[from_size - 1] = '\0';
> + // "to" is not zero-terminated.
> + memset(to, 'z', to_size);
> + EXPECT_DEATH(strcat(to, from), RightOOBErrorMessage(0));
> + // "to" is too short to fit "from".
> + to[to_size - from_size + 1] = '\0';
> + EXPECT_DEATH(strcat(to, from), RightOOBErrorMessage(0));
> + // length of "to" is just enough.
> + strcat(to, from + 1);
> +
> + free(to);
> + free(from);
> +}
> +
> +TEST(AddressSanitizer, StrNCatOOBTest) {
> + size_t to_size = Ident(100);
> + char *to = MallocAndMemsetString(to_size);
> + to[0] = '\0';
> + size_t from_size = Ident(20);
> + char *from = MallocAndMemsetString(from_size);
> + // Normal strncat calls.
> + strncat(to, from, 0);
> + strncat(to, from, from_size);
> + from[from_size - 1] = '\0';
> + strncat(to, from, 2 * from_size);
> + // Catenating empty string with an invalid string is still an error.
> + EXPECT_DEATH(strncat(to - 1, from, 0), LeftOOBErrorMessage(1));
> + strncat(to, from + from_size - 1, 10);
> + // One of arguments points to not allocated memory.
> + EXPECT_DEATH(strncat(to - 1, from, 2), LeftOOBErrorMessage(1));
> + EXPECT_DEATH(strncat(to, from - 1, 2), LeftOOBErrorMessage(1));
> + EXPECT_DEATH(strncat(to + to_size, from, 2), RightOOBErrorMessage(0));
> + EXPECT_DEATH(strncat(to, from + from_size, 2), RightOOBErrorMessage(0));
> +
> + memset(from, 'z', from_size);
> + memset(to, 'z', to_size);
> + to[0] = '\0';
> + // "from" is too short.
> + EXPECT_DEATH(strncat(to, from, from_size + 1), RightOOBErrorMessage(0));
> + // "to" is not zero-terminated.
> + EXPECT_DEATH(strncat(to + 1, from, 1), RightOOBErrorMessage(0));
> + // "to" is too short to fit "from".
> + to[0] = 'z';
> + to[to_size - from_size + 1] = '\0';
> + EXPECT_DEATH(strncat(to, from, from_size - 1), RightOOBErrorMessage(0));
> + // "to" is just enough.
> + strncat(to, from, from_size - 2);
> +
> + free(to);
> + free(from);
> +}
> +
> +static string OverlapErrorMessage(const string &func) {
> + return func + "-param-overlap";
> +}
> +
> +TEST(AddressSanitizer, StrArgsOverlapTest) {
> + size_t size = Ident(100);
> + char *str = Ident((char*)malloc(size));
> +
> +// Do not check memcpy() on OS X 10.7 and later, where it actually aliases
> +// memmove().
> +#if !defined(__APPLE__) || !defined(MAC_OS_X_VERSION_10_7) || \
> + (MAC_OS_X_VERSION_MAX_ALLOWED < MAC_OS_X_VERSION_10_7)
> + // Check "memcpy". Use Ident() to avoid inlining.
> + memset(str, 'z', size);
> + Ident(memcpy)(str + 1, str + 11, 10);
> + Ident(memcpy)(str, str, 0);
> + EXPECT_DEATH(Ident(memcpy)(str, str + 14, 15), OverlapErrorMessage("memcpy"));
> + EXPECT_DEATH(Ident(memcpy)(str + 14, str, 15), OverlapErrorMessage("memcpy"));
> +#endif
> +
> + // We do not treat memcpy with to==from as a bug.
> + // See http://llvm.org/bugs/show_bug.cgi?id=11763.
> + // EXPECT_DEATH(Ident(memcpy)(str + 20, str + 20, 1),
> + // OverlapErrorMessage("memcpy"));
> +
> + // Check "strcpy".
> + memset(str, 'z', size);
> + str[9] = '\0';
> + strcpy(str + 10, str);
> + EXPECT_DEATH(strcpy(str + 9, str), OverlapErrorMessage("strcpy"));
> + EXPECT_DEATH(strcpy(str, str + 4), OverlapErrorMessage("strcpy"));
> + strcpy(str, str + 5);
> +
> + // Check "strncpy".
> + memset(str, 'z', size);
> + strncpy(str, str + 10, 10);
> + EXPECT_DEATH(strncpy(str, str + 9, 10), OverlapErrorMessage("strncpy"));
> + EXPECT_DEATH(strncpy(str + 9, str, 10), OverlapErrorMessage("strncpy"));
> + str[10] = '\0';
> + strncpy(str + 11, str, 20);
> + EXPECT_DEATH(strncpy(str + 10, str, 20), OverlapErrorMessage("strncpy"));
> +
> + // Check "strcat".
> + memset(str, 'z', size);
> + str[10] = '\0';
> + str[20] = '\0';
> + strcat(str, str + 10);
> + EXPECT_DEATH(strcat(str, str + 11), OverlapErrorMessage("strcat"));
> + str[10] = '\0';
> + strcat(str + 11, str);
> + EXPECT_DEATH(strcat(str, str + 9), OverlapErrorMessage("strcat"));
> + EXPECT_DEATH(strcat(str + 9, str), OverlapErrorMessage("strcat"));
> + EXPECT_DEATH(strcat(str + 10, str), OverlapErrorMessage("strcat"));
> +
> + // Check "strncat".
> + memset(str, 'z', size);
> + str[10] = '\0';
> + strncat(str, str + 10, 10); // from is empty
> + EXPECT_DEATH(strncat(str, str + 11, 10), OverlapErrorMessage("strncat"));
> + str[10] = '\0';
> + str[20] = '\0';
> + strncat(str + 5, str, 5);
> + str[10] = '\0';
> + EXPECT_DEATH(strncat(str + 5, str, 6), OverlapErrorMessage("strncat"));
> + EXPECT_DEATH(strncat(str, str + 9, 10), OverlapErrorMessage("strncat"));
> +
> + free(str);
> +}
> +
> +void CallAtoi(const char *nptr) {
> + Ident(atoi(nptr));
> +}
> +void CallAtol(const char *nptr) {
> + Ident(atol(nptr));
> +}
> +void CallAtoll(const char *nptr) {
> + Ident(atoll(nptr));
> +}
> +typedef void(*PointerToCallAtoi)(const char*);
> +
> +void RunAtoiOOBTest(PointerToCallAtoi Atoi) {
> + char *array = MallocAndMemsetString(10, '1');
> + // Invalid pointer to the string.
> + EXPECT_DEATH(Atoi(array + 11), RightOOBErrorMessage(1));
> + EXPECT_DEATH(Atoi(array - 1), LeftOOBErrorMessage(1));
> + // Die if a buffer doesn't have terminating NULL.
> + EXPECT_DEATH(Atoi(array), RightOOBErrorMessage(0));
> + // Make last symbol a terminating NULL or other non-digit.
> + array[9] = '\0';
> + Atoi(array);
> + array[9] = 'a';
> + Atoi(array);
> + Atoi(array + 9);
> + // Sometimes we need to detect overflow if no digits are found.
> + memset(array, ' ', 10);
> + EXPECT_DEATH(Atoi(array), RightOOBErrorMessage(0));
> + array[9] = '-';
> + EXPECT_DEATH(Atoi(array), RightOOBErrorMessage(0));
> + EXPECT_DEATH(Atoi(array + 9), RightOOBErrorMessage(0));
> + array[8] = '-';
> + Atoi(array);
> + delete array;
> +}
> +
> +TEST(AddressSanitizer, AtoiAndFriendsOOBTest) {
> + RunAtoiOOBTest(&CallAtoi);
> + RunAtoiOOBTest(&CallAtol);
> + RunAtoiOOBTest(&CallAtoll);
> +}
> +
> +void CallStrtol(const char *nptr, char **endptr, int base) {
> + Ident(strtol(nptr, endptr, base));
> +}
> +void CallStrtoll(const char *nptr, char **endptr, int base) {
> + Ident(strtoll(nptr, endptr, base));
> +}
> +typedef void(*PointerToCallStrtol)(const char*, char**, int);
> +
> +void RunStrtolOOBTest(PointerToCallStrtol Strtol) {
> + char *array = MallocAndMemsetString(3);
> + char *endptr = NULL;
> + array[0] = '1';
> + array[1] = '2';
> + array[2] = '3';
> + // Invalid pointer to the string.
> + EXPECT_DEATH(Strtol(array + 3, NULL, 0), RightOOBErrorMessage(0));
> + EXPECT_DEATH(Strtol(array - 1, NULL, 0), LeftOOBErrorMessage(1));
> + // Buffer overflow if there is no terminating null (depends on base).
> + Strtol(array, &endptr, 3);
> + EXPECT_EQ(array + 2, endptr);
> + EXPECT_DEATH(Strtol(array, NULL, 0), RightOOBErrorMessage(0));
> + array[2] = 'z';
> + Strtol(array, &endptr, 35);
> + EXPECT_EQ(array + 2, endptr);
> + EXPECT_DEATH(Strtol(array, NULL, 36), RightOOBErrorMessage(0));
> + // Add terminating zero to get rid of overflow.
> + array[2] = '\0';
> + Strtol(array, NULL, 36);
> + // Don't check for overflow if base is invalid.
> + Strtol(array - 1, NULL, -1);
> + Strtol(array + 3, NULL, 1);
> + // Sometimes we need to detect overflow if no digits are found.
> + array[0] = array[1] = array[2] = ' ';
> + EXPECT_DEATH(Strtol(array, NULL, 0), RightOOBErrorMessage(0));
> + array[2] = '+';
> + EXPECT_DEATH(Strtol(array, NULL, 0), RightOOBErrorMessage(0));
> + array[2] = '-';
> + EXPECT_DEATH(Strtol(array, NULL, 0), RightOOBErrorMessage(0));
> + array[1] = '+';
> + Strtol(array, NULL, 0);
> + array[1] = array[2] = 'z';
> + Strtol(array, &endptr, 0);
> + EXPECT_EQ(array, endptr);
> + Strtol(array + 2, NULL, 0);
> + EXPECT_EQ(array, endptr);
> + delete array;
> +}
> +
> +TEST(AddressSanitizer, StrtollOOBTest) {
> + RunStrtolOOBTest(&CallStrtoll);
> +}
> +TEST(AddressSanitizer, StrtolOOBTest) {
> + RunStrtolOOBTest(&CallStrtol);
> +}
> +
> +// At the moment we instrument memcpy/memove/memset calls at compile time so we
> +// can't handle OOB error if these functions are called by pointer, see disabled
> +// MemIntrinsicCallByPointerTest below
> +typedef void*(*PointerToMemTransfer)(void*, const void*, size_t);
> +typedef void*(*PointerToMemSet)(void*, int, size_t);
> +
> +void CallMemSetByPointer(PointerToMemSet MemSet) {
> + size_t size = Ident(100);
> + char *array = Ident((char*)malloc(size));
> + EXPECT_DEATH(MemSet(array, 0, 101), RightOOBErrorMessage(0));
> + free(array);
> +}
> +
> +void CallMemTransferByPointer(PointerToMemTransfer MemTransfer) {
> + size_t size = Ident(100);
> + char *src = Ident((char*)malloc(size));
> + char *dst = Ident((char*)malloc(size));
> + EXPECT_DEATH(MemTransfer(dst, src, 101), RightOOBErrorMessage(0));
> + free(src);
> + free(dst);
> +}
> +
> +TEST(AddressSanitizer, DISABLED_MemIntrinsicCallByPointerTest) {
> + CallMemSetByPointer(&memset);
> + CallMemTransferByPointer(&memcpy);
> + CallMemTransferByPointer(&memmove);
> +}
> +
> +// This test case fails
> +// Clang optimizes memcpy/memset calls which lead to unaligned access
> +TEST(AddressSanitizer, DISABLED_MemIntrinsicUnalignedAccessTest) {
> + int size = Ident(4096);
> + char *s = Ident((char*)malloc(size));
> + EXPECT_DEATH(memset(s + size - 1, 0, 2), RightOOBErrorMessage(0));
> + free(s);
> +}
> +
> +// TODO(samsonov): Add a test with malloc(0)
> +// TODO(samsonov): Add tests for str* and mem* functions.
> +
> +NOINLINE static int LargeFunction(bool do_bad_access) {
> + int *x = new int[100];
> + x[0]++;
> + x[1]++;
> + x[2]++;
> + x[3]++;
> + x[4]++;
> + x[5]++;
> + x[6]++;
> + x[7]++;
> + x[8]++;
> + x[9]++;
> +
> + x[do_bad_access ? 100 : 0]++; int res = __LINE__;
> +
> + x[10]++;
> + x[11]++;
> + x[12]++;
> + x[13]++;
> + x[14]++;
> + x[15]++;
> + x[16]++;
> + x[17]++;
> + x[18]++;
> + x[19]++;
> +
> + delete x;
> + return res;
> +}
> +
> +// Test the we have correct debug info for the failing instruction.
> +// This test requires the in-process symbolizer to be enabled by default.
> +TEST(AddressSanitizer, DISABLED_LargeFunctionSymbolizeTest) {
> + int failing_line = LargeFunction(false);
> + char expected_warning[128];
> + sprintf(expected_warning, "LargeFunction.*asan_test.cc:%d", failing_line);
> + EXPECT_DEATH(LargeFunction(true), expected_warning);
> +}
> +
> +// Check that we unwind and symbolize correctly.
> +TEST(AddressSanitizer, DISABLED_MallocFreeUnwindAndSymbolizeTest) {
> + int *a = (int*)malloc_aaa(sizeof(int));
> + *a = 1;
> + free_aaa(a);
> + EXPECT_DEATH(*a = 1, "free_ccc.*free_bbb.*free_aaa.*"
> + "malloc_fff.*malloc_eee.*malloc_ddd");
> +}
> +
> +void *ThreadedTestAlloc(void *a) {
> + int **p = (int**)a;
> + *p = new int;
> + return 0;
> +}
> +
> +void *ThreadedTestFree(void *a) {
> + int **p = (int**)a;
> + delete *p;
> + return 0;
> +}
> +
> +void *ThreadedTestUse(void *a) {
> + int **p = (int**)a;
> + **p = 1;
> + return 0;
> +}
> +
> +void ThreadedTestSpawn() {
> + pthread_t t;
> + int *x;
> + pthread_create(&t, 0, ThreadedTestAlloc, &x);
> + pthread_join(t, 0);
> + pthread_create(&t, 0, ThreadedTestFree, &x);
> + pthread_join(t, 0);
> + pthread_create(&t, 0, ThreadedTestUse, &x);
> + pthread_join(t, 0);
> +}
> +
> +TEST(AddressSanitizer, ThreadedTest) {
> + EXPECT_DEATH(ThreadedTestSpawn(),
> + ASAN_PCRE_DOTALL
> + "Thread T.*created"
> + ".*Thread T.*created"
> + ".*Thread T.*created");
> +}
> +
> +#if ASAN_NEEDS_SEGV
> +TEST(AddressSanitizer, ShadowGapTest) {
> +#if SANITIZER_WORDSIZE == 32
> + char *addr = (char*)0x22000000;
> +#else
> + char *addr = (char*)0x0000100000080000;
> +#endif
> + EXPECT_DEATH(*addr = 1, "AddressSanitizer: SEGV on unknown");
> +}
> +#endif // ASAN_NEEDS_SEGV
> +
> +extern "C" {
> +NOINLINE static void UseThenFreeThenUse() {
> + char *x = Ident((char*)malloc(8));
> + *x = 1;
> + free_aaa(x);
> + *x = 2;
> +}
> +}
> +
> +TEST(AddressSanitizer, UseThenFreeThenUseTest) {
> + EXPECT_DEATH(UseThenFreeThenUse(), "freed by thread");
> +}
> +
> +TEST(AddressSanitizer, StrDupTest) {
> + free(strdup(Ident("123")));
> +}
> +
> +// Currently we create and poison redzone at right of global variables.
> +char glob5[5];
> +static char static110[110];
> +const char ConstGlob[7] = {1, 2, 3, 4, 5, 6, 7};
> +static const char StaticConstGlob[3] = {9, 8, 7};
> +extern int GlobalsTest(int x);
> +
> +TEST(AddressSanitizer, GlobalTest) {
> + static char func_static15[15];
> +
> + static char fs1[10];
> + static char fs2[10];
> + static char fs3[10];
> +
> + glob5[Ident(0)] = 0;
> + glob5[Ident(1)] = 0;
> + glob5[Ident(2)] = 0;
> + glob5[Ident(3)] = 0;
> + glob5[Ident(4)] = 0;
> +
> + EXPECT_DEATH(glob5[Ident(5)] = 0,
> + "0 bytes to the right of global variable.*glob5.* size 5");
> + EXPECT_DEATH(glob5[Ident(5+6)] = 0,
> + "6 bytes to the right of global variable.*glob5.* size 5");
> + Ident(static110); // avoid optimizations
> + static110[Ident(0)] = 0;
> + static110[Ident(109)] = 0;
> + EXPECT_DEATH(static110[Ident(110)] = 0,
> + "0 bytes to the right of global variable");
> + EXPECT_DEATH(static110[Ident(110+7)] = 0,
> + "7 bytes to the right of global variable");
> +
> + Ident(func_static15); // avoid optimizations
> + func_static15[Ident(0)] = 0;
> + EXPECT_DEATH(func_static15[Ident(15)] = 0,
> + "0 bytes to the right of global variable");
> + EXPECT_DEATH(func_static15[Ident(15 + 9)] = 0,
> + "9 bytes to the right of global variable");
> +
> + Ident(fs1);
> + Ident(fs2);
> + Ident(fs3);
> +
> + // We don't create left redzones, so this is not 100% guaranteed to fail.
> + // But most likely will.
> + EXPECT_DEATH(fs2[Ident(-1)] = 0, "is located.*of global variable");
> +
> + EXPECT_DEATH(Ident(Ident(ConstGlob)[8]),
> + "is located 1 bytes to the right of .*ConstGlob");
> + EXPECT_DEATH(Ident(Ident(StaticConstGlob)[5]),
> + "is located 2 bytes to the right of .*StaticConstGlob");
> +
> + // call stuff from another file.
> + GlobalsTest(0);
> +}
> +
> +TEST(AddressSanitizer, GlobalStringConstTest) {
> + static const char *zoo = "FOOBAR123";
> + const char *p = Ident(zoo);
> + EXPECT_DEATH(Ident(p[15]), "is ascii string 'FOOBAR123'");
> +}
> +
> +TEST(AddressSanitizer, FileNameInGlobalReportTest) {
> + static char zoo[10];
> + const char *p = Ident(zoo);
> + // The file name should be present in the report.
> + EXPECT_DEATH(Ident(p[15]), "zoo.*asan_test.cc");
> +}
> +
> +int *ReturnsPointerToALocalObject() {
> + int a = 0;
> + return Ident(&a);
> +}
> +
> +#if ASAN_UAR == 1
> +TEST(AddressSanitizer, LocalReferenceReturnTest) {
> + int *(*f)() = Ident(ReturnsPointerToALocalObject);
> + int *p = f();
> + // Call 'f' a few more times, 'p' should still be poisoned.
> + for (int i = 0; i < 32; i++)
> + f();
> + EXPECT_DEATH(*p = 1, "AddressSanitizer: stack-use-after-return");
> + EXPECT_DEATH(*p = 1, "is located.*in frame .*ReturnsPointerToALocal");
> +}
> +#endif
> +
> +template <int kSize>
> +NOINLINE static void FuncWithStack() {
> + char x[kSize];
> + Ident(x)[0] = 0;
> + Ident(x)[kSize-1] = 0;
> +}
> +
> +static void LotsOfStackReuse() {
> + int LargeStack[10000];
> + Ident(LargeStack)[0] = 0;
> + for (int i = 0; i < 10000; i++) {
> + FuncWithStack<128 * 1>();
> + FuncWithStack<128 * 2>();
> + FuncWithStack<128 * 4>();
> + FuncWithStack<128 * 8>();
> + FuncWithStack<128 * 16>();
> + FuncWithStack<128 * 32>();
> + FuncWithStack<128 * 64>();
> + FuncWithStack<128 * 128>();
> + FuncWithStack<128 * 256>();
> + FuncWithStack<128 * 512>();
> + Ident(LargeStack)[0] = 0;
> + }
> +}
> +
> +TEST(AddressSanitizer, StressStackReuseTest) {
> + LotsOfStackReuse();
> +}
> +
> +TEST(AddressSanitizer, ThreadedStressStackReuseTest) {
> + const int kNumThreads = 20;
> + pthread_t t[kNumThreads];
> + for (int i = 0; i < kNumThreads; i++) {
> + pthread_create(&t[i], 0, (void* (*)(void *x))LotsOfStackReuse, 0);
> + }
> + for (int i = 0; i < kNumThreads; i++) {
> + pthread_join(t[i], 0);
> + }
> +}
> +
> +static void *PthreadExit(void *a) {
> + pthread_exit(0);
> + return 0;
> +}
> +
> +TEST(AddressSanitizer, PthreadExitTest) {
> + pthread_t t;
> + for (int i = 0; i < 1000; i++) {
> + pthread_create(&t, 0, PthreadExit, 0);
> + pthread_join(t, 0);
> + }
> +}
> +
> +#ifdef __EXCEPTIONS
> +NOINLINE static void StackReuseAndException() {
> + int large_stack[1000];
> + Ident(large_stack);
> + ASAN_THROW(1);
> +}
> +
> +// TODO(kcc): support exceptions with use-after-return.
> +TEST(AddressSanitizer, DISABLED_StressStackReuseAndExceptionsTest) {
> + for (int i = 0; i < 10000; i++) {
> + try {
> + StackReuseAndException();
> + } catch(...) {
> + }
> + }
> +}
> +#endif
> +
> +TEST(AddressSanitizer, MlockTest) {
> + EXPECT_EQ(0, mlockall(MCL_CURRENT));
> + EXPECT_EQ(0, mlock((void*)0x12345, 0x5678));
> + EXPECT_EQ(0, munlockall());
> + EXPECT_EQ(0, munlock((void*)0x987, 0x654));
> +}
> +
> +struct LargeStruct {
> + int foo[100];
> +};
> +
> +// Test for bug http://llvm.org/bugs/show_bug.cgi?id=11763.
> +// Struct copy should not cause asan warning even if lhs == rhs.
> +TEST(AddressSanitizer, LargeStructCopyTest) {
> + LargeStruct a;
> + *Ident(&a) = *Ident(&a);
> +}
> +
> +ATTRIBUTE_NO_ADDRESS_SAFETY_ANALYSIS
> +static void NoAddressSafety() {
> + char *foo = new char[10];
> + Ident(foo)[10] = 0;
> + delete [] foo;
> +}
> +
> +TEST(AddressSanitizer, AttributeNoAddressSafetyTest) {
> + Ident(NoAddressSafety)();
> +}
> +
> +// ------------------ demo tests; run each one-by-one -------------
> +// e.g. --gtest_filter=*DemoOOBLeftHigh --gtest_also_run_disabled_tests
> +TEST(AddressSanitizer, DISABLED_DemoThreadedTest) {
> + ThreadedTestSpawn();
> +}
> +
> +void *SimpleBugOnSTack(void *x = 0) {
> + char a[20];
> + Ident(a)[20] = 0;
> + return 0;
> +}
> +
> +TEST(AddressSanitizer, DISABLED_DemoStackTest) {
> + SimpleBugOnSTack();
> +}
> +
> +TEST(AddressSanitizer, DISABLED_DemoThreadStackTest) {
> + pthread_t t;
> + pthread_create(&t, 0, SimpleBugOnSTack, 0);
> + pthread_join(t, 0);
> +}
> +
> +TEST(AddressSanitizer, DISABLED_DemoUAFLowIn) {
> + uaf_test<U1>(10, 0);
> +}
> +TEST(AddressSanitizer, DISABLED_DemoUAFLowLeft) {
> + uaf_test<U1>(10, -2);
> +}
> +TEST(AddressSanitizer, DISABLED_DemoUAFLowRight) {
> + uaf_test<U1>(10, 10);
> +}
> +
> +TEST(AddressSanitizer, DISABLED_DemoUAFHigh) {
> + uaf_test<U1>(kLargeMalloc, 0);
> +}
> +
> +TEST(AddressSanitizer, DISABLED_DemoOOBLeftLow) {
> + oob_test<U1>(10, -1);
> +}
> +
> +TEST(AddressSanitizer, DISABLED_DemoOOBLeftHigh) {
> + oob_test<U1>(kLargeMalloc, -1);
> +}
> +
> +TEST(AddressSanitizer, DISABLED_DemoOOBRightLow) {
> + oob_test<U1>(10, 10);
> +}
> +
> +TEST(AddressSanitizer, DISABLED_DemoOOBRightHigh) {
> + oob_test<U1>(kLargeMalloc, kLargeMalloc);
> +}
> +
> +TEST(AddressSanitizer, DISABLED_DemoOOM) {
> + size_t size = SANITIZER_WORDSIZE == 64 ? (size_t)(1ULL << 40) : (0xf0000000);
> + printf("%p\n", malloc(size));
> +}
> +
> +TEST(AddressSanitizer, DISABLED_DemoDoubleFreeTest) {
> + DoubleFree();
> +}
> +
> +TEST(AddressSanitizer, DISABLED_DemoNullDerefTest) {
> + int *a = 0;
> + Ident(a)[10] = 0;
> +}
> +
> +TEST(AddressSanitizer, DISABLED_DemoFunctionStaticTest) {
> + static char a[100];
> + static char b[100];
> + static char c[100];
> + Ident(a);
> + Ident(b);
> + Ident(c);
> + Ident(a)[5] = 0;
> + Ident(b)[105] = 0;
> + Ident(a)[5] = 0;
> +}
> +
> +TEST(AddressSanitizer, DISABLED_DemoTooMuchMemoryTest) {
> + const size_t kAllocSize = (1 << 28) - 1024;
> + size_t total_size = 0;
> + while (true) {
> + char *x = (char*)malloc(kAllocSize);
> + memset(x, 0, kAllocSize);
> + total_size += kAllocSize;
> + fprintf(stderr, "total: %ldM %p\n", (long)total_size >> 20, x);
> + }
> +}
> +
> +// http://code.google.com/p/address-sanitizer/issues/detail?id=66
> +TEST(AddressSanitizer, BufferOverflowAfterManyFrees) {
> + for (int i = 0; i < 1000000; i++) {
> + delete [] (Ident(new char [8644]));
> + }
> + char *x = new char[8192];
> + EXPECT_DEATH(x[Ident(8192)] = 0, "AddressSanitizer: heap-buffer-overflow");
> + delete [] Ident(x);
> +}
> +
> +#ifdef __APPLE__
> +#include "asan_mac_test.h"
> +TEST(AddressSanitizerMac, CFAllocatorDefaultDoubleFree) {
> + EXPECT_DEATH(
> + CFAllocatorDefaultDoubleFree(NULL),
> + "attempting double-free");
> +}
> +
> +void CFAllocator_DoubleFreeOnPthread() {
> + pthread_t child;
> + pthread_create(&child, NULL, CFAllocatorDefaultDoubleFree, NULL);
> + pthread_join(child, NULL); // Shouldn't be reached.
> +}
> +
> +TEST(AddressSanitizerMac, CFAllocatorDefaultDoubleFree_ChildPhread) {
> + EXPECT_DEATH(CFAllocator_DoubleFreeOnPthread(), "attempting double-free");
> +}
> +
> +namespace {
> +
> +void *GLOB;
> +
> +void *CFAllocatorAllocateToGlob(void *unused) {
> + GLOB = CFAllocatorAllocate(NULL, 100, /*hint*/0);
> + return NULL;
> +}
> +
> +void *CFAllocatorDeallocateFromGlob(void *unused) {
> + char *p = (char*)GLOB;
> + p[100] = 'A'; // ASan should report an error here.
> + CFAllocatorDeallocate(NULL, GLOB);
> + return NULL;
> +}
> +
> +void CFAllocator_PassMemoryToAnotherThread() {
> + pthread_t th1, th2;
> + pthread_create(&th1, NULL, CFAllocatorAllocateToGlob, NULL);
> + pthread_join(th1, NULL);
> + pthread_create(&th2, NULL, CFAllocatorDeallocateFromGlob, NULL);
> + pthread_join(th2, NULL);
> +}
> +
> +TEST(AddressSanitizerMac, CFAllocator_PassMemoryToAnotherThread) {
> + EXPECT_DEATH(CFAllocator_PassMemoryToAnotherThread(),
> + "heap-buffer-overflow");
> +}
> +
> +} // namespace
> +
> +// TODO(glider): figure out whether we still need these tests. Is it correct
> +// to intercept the non-default CFAllocators?
> +TEST(AddressSanitizerMac, DISABLED_CFAllocatorSystemDefaultDoubleFree) {
> + EXPECT_DEATH(
> + CFAllocatorSystemDefaultDoubleFree(),
> + "attempting double-free");
> +}
> +
> +// We're intercepting malloc, so kCFAllocatorMalloc is routed to ASan.
> +TEST(AddressSanitizerMac, CFAllocatorMallocDoubleFree) {
> + EXPECT_DEATH(CFAllocatorMallocDoubleFree(), "attempting double-free");
> +}
> +
> +TEST(AddressSanitizerMac, DISABLED_CFAllocatorMallocZoneDoubleFree) {
> + EXPECT_DEATH(CFAllocatorMallocZoneDoubleFree(), "attempting double-free");
> +}
> +
> +TEST(AddressSanitizerMac, GCDDispatchAsync) {
> + // Make sure the whole ASan report is printed, i.e. that we don't die
> + // on a CHECK.
> + EXPECT_DEATH(TestGCDDispatchAsync(), "Shadow byte and word");
> +}
> +
> +TEST(AddressSanitizerMac, GCDDispatchSync) {
> + // Make sure the whole ASan report is printed, i.e. that we don't die
> + // on a CHECK.
> + EXPECT_DEATH(TestGCDDispatchSync(), "Shadow byte and word");
> +}
> +
> +
> +TEST(AddressSanitizerMac, GCDReuseWqthreadsAsync) {
> + // Make sure the whole ASan report is printed, i.e. that we don't die
> + // on a CHECK.
> + EXPECT_DEATH(TestGCDReuseWqthreadsAsync(), "Shadow byte and word");
> +}
> +
> +TEST(AddressSanitizerMac, GCDReuseWqthreadsSync) {
> + // Make sure the whole ASan report is printed, i.e. that we don't die
> + // on a CHECK.
> + EXPECT_DEATH(TestGCDReuseWqthreadsSync(), "Shadow byte and word");
> +}
> +
> +TEST(AddressSanitizerMac, GCDDispatchAfter) {
> + // Make sure the whole ASan report is printed, i.e. that we don't die
> + // on a CHECK.
> + EXPECT_DEATH(TestGCDDispatchAfter(), "Shadow byte and word");
> +}
> +
> +TEST(AddressSanitizerMac, GCDSourceEvent) {
> + // Make sure the whole ASan report is printed, i.e. that we don't die
> + // on a CHECK.
> + EXPECT_DEATH(TestGCDSourceEvent(), "Shadow byte and word");
> +}
> +
> +TEST(AddressSanitizerMac, GCDSourceCancel) {
> + // Make sure the whole ASan report is printed, i.e. that we don't die
> + // on a CHECK.
> + EXPECT_DEATH(TestGCDSourceCancel(), "Shadow byte and word");
> +}
> +
> +TEST(AddressSanitizerMac, GCDGroupAsync) {
> + // Make sure the whole ASan report is printed, i.e. that we don't die
> + // on a CHECK.
> + EXPECT_DEATH(TestGCDGroupAsync(), "Shadow byte and word");
> +}
> +
> +void *MallocIntrospectionLockWorker(void *_) {
> + const int kNumPointers = 100;
> + int i;
> + void *pointers[kNumPointers];
> + for (i = 0; i < kNumPointers; i++) {
> + pointers[i] = malloc(i + 1);
> + }
> + for (i = 0; i < kNumPointers; i++) {
> + free(pointers[i]);
> + }
> +
> + return NULL;
> +}
> +
> +void *MallocIntrospectionLockForker(void *_) {
> + pid_t result = fork();
> + if (result == -1) {
> + perror("fork");
> + }
> + assert(result != -1);
> + if (result == 0) {
> + // Call malloc in the child process to make sure we won't deadlock.
> + void *ptr = malloc(42);
> + free(ptr);
> + exit(0);
> + } else {
> + // Return in the parent process.
> + return NULL;
> + }
> +}
> +
> +TEST(AddressSanitizerMac, MallocIntrospectionLock) {
> + // Incorrect implementation of force_lock and force_unlock in our malloc zone
> + // will cause forked processes to deadlock.
> + // TODO(glider): need to detect that none of the child processes deadlocked.
> + const int kNumWorkers = 5, kNumIterations = 100;
> + int i, iter;
> + for (iter = 0; iter < kNumIterations; iter++) {
> + pthread_t workers[kNumWorkers], forker;
> + for (i = 0; i < kNumWorkers; i++) {
> + pthread_create(&workers[i], 0, MallocIntrospectionLockWorker, 0);
> + }
> + pthread_create(&forker, 0, MallocIntrospectionLockForker, 0);
> + for (i = 0; i < kNumWorkers; i++) {
> + pthread_join(workers[i], 0);
> + }
> + pthread_join(forker, 0);
> + }
> +}
> +
> +void *TSDAllocWorker(void *test_key) {
> + if (test_key) {
> + void *mem = malloc(10);
> + pthread_setspecific(*(pthread_key_t*)test_key, mem);
> + }
> + return NULL;
> +}
> +
> +TEST(AddressSanitizerMac, DISABLED_TSDWorkqueueTest) {
> + pthread_t th;
> + pthread_key_t test_key;
> + pthread_key_create(&test_key, CallFreeOnWorkqueue);
> + pthread_create(&th, NULL, TSDAllocWorker, &test_key);
> + pthread_join(th, NULL);
> + pthread_key_delete(test_key);
> +}
> +
> +// Test that CFStringCreateCopy does not copy constant strings.
> +TEST(AddressSanitizerMac, CFStringCreateCopy) {
> + CFStringRef str = CFSTR("Hello world!\n");
> + CFStringRef str2 = CFStringCreateCopy(0, str);
> + EXPECT_EQ(str, str2);
> +}
> +
> +TEST(AddressSanitizerMac, NSObjectOOB) {
> + // Make sure that our allocators are used for NSObjects.
> + EXPECT_DEATH(TestOOBNSObjects(), "heap-buffer-overflow");
> +}
> +
> +// Make sure that correct pointer is passed to free() when deallocating a
> +// NSURL object.
> +// See http://code.google.com/p/address-sanitizer/issues/detail?id=70.
> +TEST(AddressSanitizerMac, NSURLDeallocation) {
> + TestNSURLDeallocation();
> +}
> +
> +// See http://code.google.com/p/address-sanitizer/issues/detail?id=109.
> +TEST(AddressSanitizerMac, Mstats) {
> + malloc_statistics_t stats1, stats2;
> + malloc_zone_statistics(/*all zones*/NULL, &stats1);
> + const int kMallocSize = 100000;
> + void *alloc = Ident(malloc(kMallocSize));
> + malloc_zone_statistics(/*all zones*/NULL, &stats2);
> + EXPECT_GT(stats2.blocks_in_use, stats1.blocks_in_use);
> + EXPECT_GE(stats2.size_in_use - stats1.size_in_use, kMallocSize);
> + free(alloc);
> + // Even the default OSX allocator may not change the stats after free().
> +}
> +#endif // __APPLE__
> +
> +// Test that instrumentation of stack allocations takes into account
> +// AllocSize of a type, and not its StoreSize (16 vs 10 bytes for long double).
> +// See http://llvm.org/bugs/show_bug.cgi?id=12047 for more details.
> +TEST(AddressSanitizer, LongDoubleNegativeTest) {
> + long double a, b;
> + static long double c;
> + memcpy(Ident(&a), Ident(&b), sizeof(long double));
> + memcpy(Ident(&c), Ident(&b), sizeof(long double));
> +}
>
>
> Jakub
next prev parent reply other threads:[~2012-12-03 7:07 UTC|newest]
Thread overview: 41+ messages / expand[flat|nested] mbox.gz Atom feed top
2012-11-28 9:15 [PATCH] asan unit tests from llvm lit-test Wei Mi
2012-11-28 10:10 ` Konstantin Serebryany
2012-11-28 10:25 ` Jakub Jelinek
2012-11-28 10:41 ` Konstantin Serebryany
2012-11-28 11:03 ` Jakub Jelinek
2012-11-28 11:14 ` Konstantin Serebryany
2012-11-29 20:59 ` [PATCH] asan_test.cc from llvm Jakub Jelinek
2012-11-30 9:35 ` Konstantin Serebryany
2012-11-30 10:22 ` Jakub Jelinek
2012-11-30 10:55 ` Konstantin Serebryany
2012-11-30 14:52 ` Jakub Jelinek
2012-11-30 16:06 ` Jakub Jelinek
[not found] ` <CAKOQZ8y70goUL91pQJt_S=8W+Dn5VTZ5oRphvGuFwMMh41mkLg@mail.gmail.com>
2012-11-30 16:34 ` Jakub Jelinek
2012-12-03 7:07 ` Konstantin Serebryany [this message]
2012-12-03 9:18 ` Jakub Jelinek
2012-12-03 9:52 ` Konstantin Serebryany
2012-12-03 11:05 ` Jakub Jelinek
2012-12-03 11:42 ` Konstantin Serebryany
2012-11-28 11:25 ` [PATCH] asan unit tests from llvm lit-test Jakub Jelinek
2012-11-28 11:39 ` Konstantin Serebryany
2012-11-28 10:14 ` Jakub Jelinek
2012-11-30 21:05 ` Wei Mi
2012-12-03 7:16 ` Konstantin Serebryany
2012-12-03 11:01 ` Jakub Jelinek
2012-12-03 18:33 ` Wei Mi
2012-12-03 18:49 ` Konstantin Serebryany
2012-12-03 19:44 ` Jakub Jelinek
2012-12-03 19:09 ` Mike Stump
2012-12-03 19:37 ` Jakub Jelinek
2012-12-03 19:50 ` Mike Stump
[not found] ` <CAN=P9pgjjq66KS2DVkuOSeH2ejQPDcyKhwz5MdKyE3RB64E=xw@mail.gmail.com>
2012-12-04 7:34 ` Jakub Jelinek
2012-12-04 18:01 ` Wei Mi
2012-12-05 12:29 ` [PATCH] asan unit tests from llvm lit-test incremental changes Jakub Jelinek
2012-12-12 21:32 ` Dodji Seketeli
2012-12-12 21:31 ` Jakub Jelinek
2012-12-13 7:44 ` Konstantin Serebryany
2012-12-13 8:37 ` Jakub Jelinek
2012-12-13 10:23 ` Konstantin Serebryany
2012-12-13 15:22 ` Jakub Jelinek
2012-12-05 23:29 ` [asan] Fix up dg-set-target-env-var Jakub Jelinek
2012-12-06 0:23 ` Mike Stump
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