* [Bug tools/21312] New: eu-elflint: memory allocation failure in xcalloc (xmalloc.c) @ 2017-03-27 10:46 ago at gentoo dot org 2017-03-27 23:28 ` [Bug tools/21312] " mark at klomp dot org 2017-04-03 22:25 ` mark at klomp dot org 0 siblings, 2 replies; 3+ messages in thread From: ago at gentoo dot org @ 2017-03-27 10:46 UTC (permalink / raw) To: elfutils-devel https://sourceware.org/bugzilla/show_bug.cgi?id=21312 Bug ID: 21312 Summary: eu-elflint: memory allocation failure in xcalloc (xmalloc.c) Product: elfutils Version: unspecified Status: UNCONFIRMED Severity: normal Priority: P2 Component: tools Assignee: unassigned at sourceware dot org Reporter: ago at gentoo dot org CC: elfutils-devel at sourceware dot org Target Milestone: --- Created attachment 9946 --> https://sourceware.org/bugzilla/attachment.cgi?id=9946&action=edit stacktrace On elfutils-0.168: # eu-elflint -d $FILE ==5053==AddressSanitizer CHECK failed: /tmp/portage/sys-devel/gcc-6.3.0/work/gcc-6.3.0/libsanitizer/sanitizer_common/sanitizer_common.cc:180 "((0 && "unable to mmap")) != (0)" (0x0, 0x0) #7 0x431b8d in xcalloc /tmp/portage/dev-libs/elfutils-0.168/work/elfutils-0.168/lib/xmalloc.c:64 Compiled with: gcc-6.3.0 Reproducer: https://github.com/asarubbo/poc/blob/master/00236-elfutils-memallocfailure Stacktrace attached. -- You are receiving this mail because: You are on the CC list for the bug. ^ permalink raw reply [flat|nested] 3+ messages in thread
* [Bug tools/21312] eu-elflint: memory allocation failure in xcalloc (xmalloc.c) 2017-03-27 10:46 [Bug tools/21312] New: eu-elflint: memory allocation failure in xcalloc (xmalloc.c) ago at gentoo dot org @ 2017-03-27 23:28 ` mark at klomp dot org 2017-04-03 22:25 ` mark at klomp dot org 1 sibling, 0 replies; 3+ messages in thread From: mark at klomp dot org @ 2017-03-27 23:28 UTC (permalink / raw) To: elfutils-devel https://sourceware.org/bugzilla/show_bug.cgi?id=21312 Mark Wielaard <mark at klomp dot org> changed: What |Removed |Added ---------------------------------------------------------------------------- CC| |mark at klomp dot org --- Comment #1 from Mark Wielaard <mark at klomp dot org> --- The allocation failure is caused by the insane large ph_num. We can limit the amount of memory we need by first checking we can at least read the headers and only allocate/check that number (and do the same for shnum). https://sourceware.org/ml/elfutils-devel/2017-q1/msg00133.html -- You are receiving this mail because: You are on the CC list for the bug. ^ permalink raw reply [flat|nested] 3+ messages in thread
* [Bug tools/21312] eu-elflint: memory allocation failure in xcalloc (xmalloc.c) 2017-03-27 10:46 [Bug tools/21312] New: eu-elflint: memory allocation failure in xcalloc (xmalloc.c) ago at gentoo dot org 2017-03-27 23:28 ` [Bug tools/21312] " mark at klomp dot org @ 2017-04-03 22:25 ` mark at klomp dot org 1 sibling, 0 replies; 3+ messages in thread From: mark at klomp dot org @ 2017-04-03 22:25 UTC (permalink / raw) To: elfutils-devel https://sourceware.org/bugzilla/show_bug.cgi?id=21312 Mark Wielaard <mark at klomp dot org> changed: What |Removed |Added ---------------------------------------------------------------------------- Status|UNCONFIRMED |RESOLVED Resolution|--- |FIXED --- Comment #2 from Mark Wielaard <mark at klomp dot org> --- commit 4314716cd498bb51639db717bd7ce6182de33322 Author: Mark Wielaard <mark@klomp.org> Date: Tue Mar 28 01:25:34 2017 +0200 elflint: Sanity check the number of phdrs and shdrs available. Make sure we can at least read the shnum sections or phnum segments. Limit the number we do check to those we can actually read. https://sourceware.org/bugzilla/show_bug.cgi?id=21312 Signed-off-by: Mark Wielaard <mark@klomp.org> -- You are receiving this mail because: You are on the CC list for the bug. ^ permalink raw reply [flat|nested] 3+ messages in thread
end of thread, other threads:[~2017-04-03 22:25 UTC | newest] Thread overview: 3+ messages (download: mbox.gz / follow: Atom feed) -- links below jump to the message on this page -- 2017-03-27 10:46 [Bug tools/21312] New: eu-elflint: memory allocation failure in xcalloc (xmalloc.c) ago at gentoo dot org 2017-03-27 23:28 ` [Bug tools/21312] " mark at klomp dot org 2017-04-03 22:25 ` mark at klomp dot org
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