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* [Bug libc/28850] New: linux: __get_nprocs_sched reads uninitialized memory from the stack
@ 2022-02-01 21:46 glebfm at altlinux dot org
2022-02-01 21:46 ` [Bug libc/28850] " glebfm at altlinux dot org
` (3 more replies)
0 siblings, 4 replies; 5+ messages in thread
From: glebfm at altlinux dot org @ 2022-02-01 21:46 UTC (permalink / raw)
To: glibc-bugs
https://sourceware.org/bugzilla/show_bug.cgi?id=28850
Bug ID: 28850
Summary: linux: __get_nprocs_sched reads uninitialized memory
from the stack
Product: glibc
Version: 2.34
Status: UNCONFIRMED
Severity: normal
Priority: P2
Component: libc
Assignee: unassigned at sourceware dot org
Reporter: glebfm at altlinux dot org
CC: drepper.fsp at gmail dot com
Target Milestone: ---
$ cat f.c
#include <stdio.h>
extern int __get_nprocs_sched (void);
int main() {
printf("%d\n", __get_nprocs_sched());
}
$ gcc -static f.c -o f
$ ./f
828
$ ./f
794
$ nproc
8
sched_getaffinity(2) writes first N bits of cpu_bits array, but the rest of it
is left uninitialized.
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^ permalink raw reply [flat|nested] 5+ messages in thread* [Bug libc/28850] linux: __get_nprocs_sched reads uninitialized memory from the stack 2022-02-01 21:46 [Bug libc/28850] New: linux: __get_nprocs_sched reads uninitialized memory from the stack glebfm at altlinux dot org @ 2022-02-01 21:46 ` glebfm at altlinux dot org 2022-02-01 22:08 ` adhemerval.zanella at linaro dot org ` (2 subsequent siblings) 3 siblings, 0 replies; 5+ messages in thread From: glebfm at altlinux dot org @ 2022-02-01 21:46 UTC (permalink / raw) To: glibc-bugs https://sourceware.org/bugzilla/show_bug.cgi?id=28850 Gleb Fotengauer-Malinovskiy <glebfm at altlinux dot org> changed: What |Removed |Added ---------------------------------------------------------------------------- CC| |adhemerval.zanella at linaro dot o | |rg -- You are receiving this mail because: You are on the CC list for the bug. ^ permalink raw reply [flat|nested] 5+ messages in thread
* [Bug libc/28850] linux: __get_nprocs_sched reads uninitialized memory from the stack 2022-02-01 21:46 [Bug libc/28850] New: linux: __get_nprocs_sched reads uninitialized memory from the stack glebfm at altlinux dot org 2022-02-01 21:46 ` [Bug libc/28850] " glebfm at altlinux dot org @ 2022-02-01 22:08 ` adhemerval.zanella at linaro dot org 2022-02-03 12:15 ` ldv at sourceware dot org 2022-02-03 12:22 ` ldv at sourceware dot org 3 siblings, 0 replies; 5+ messages in thread From: adhemerval.zanella at linaro dot org @ 2022-02-01 22:08 UTC (permalink / raw) To: glibc-bugs https://sourceware.org/bugzilla/show_bug.cgi?id=28850 Adhemerval Zanella <adhemerval.zanella at linaro dot org> changed: What |Removed |Added ---------------------------------------------------------------------------- Status|UNCONFIRMED |ASSIGNED Ever confirmed|0 |1 Assignee|unassigned at sourceware dot org |adhemerval.zanella at linaro dot o | |rg Last reconfirmed| |2022-02-01 -- You are receiving this mail because: You are on the CC list for the bug. ^ permalink raw reply [flat|nested] 5+ messages in thread
* [Bug libc/28850] linux: __get_nprocs_sched reads uninitialized memory from the stack 2022-02-01 21:46 [Bug libc/28850] New: linux: __get_nprocs_sched reads uninitialized memory from the stack glebfm at altlinux dot org 2022-02-01 21:46 ` [Bug libc/28850] " glebfm at altlinux dot org 2022-02-01 22:08 ` adhemerval.zanella at linaro dot org @ 2022-02-03 12:15 ` ldv at sourceware dot org 2022-02-03 12:22 ` ldv at sourceware dot org 3 siblings, 0 replies; 5+ messages in thread From: ldv at sourceware dot org @ 2022-02-03 12:15 UTC (permalink / raw) To: glibc-bugs https://sourceware.org/bugzilla/show_bug.cgi?id=28850 Dmitry V. Levin <ldv at sourceware dot org> changed: What |Removed |Added ---------------------------------------------------------------------------- Target Milestone|--- |2.36 -- You are receiving this mail because: You are on the CC list for the bug. ^ permalink raw reply [flat|nested] 5+ messages in thread
* [Bug libc/28850] linux: __get_nprocs_sched reads uninitialized memory from the stack 2022-02-01 21:46 [Bug libc/28850] New: linux: __get_nprocs_sched reads uninitialized memory from the stack glebfm at altlinux dot org ` (2 preceding siblings ...) 2022-02-03 12:15 ` ldv at sourceware dot org @ 2022-02-03 12:22 ` ldv at sourceware dot org 3 siblings, 0 replies; 5+ messages in thread From: ldv at sourceware dot org @ 2022-02-03 12:22 UTC (permalink / raw) To: glibc-bugs https://sourceware.org/bugzilla/show_bug.cgi?id=28850 Dmitry V. Levin <ldv at sourceware dot org> changed: What |Removed |Added ---------------------------------------------------------------------------- Resolution|--- |FIXED Status|ASSIGNED |RESOLVED Assignee|adhemerval.zanella at linaro dot o |ldv at sourceware dot org |rg | --- Comment #1 from Dmitry V. Levin <ldv at sourceware dot org> --- Fixed in 2.36: https://sourceware.org/git/?p=glibc.git;a=commitdiff;h=97ba273b505763325efd802dc3a9562dbba79579 -- You are receiving this mail because: You are on the CC list for the bug. ^ permalink raw reply [flat|nested] 5+ messages in thread
end of thread, other threads:[~2022-02-03 12:22 UTC | newest] Thread overview: 5+ messages (download: mbox.gz / follow: Atom feed) -- links below jump to the message on this page -- 2022-02-01 21:46 [Bug libc/28850] New: linux: __get_nprocs_sched reads uninitialized memory from the stack glebfm at altlinux dot org 2022-02-01 21:46 ` [Bug libc/28850] " glebfm at altlinux dot org 2022-02-01 22:08 ` adhemerval.zanella at linaro dot org 2022-02-03 12:15 ` ldv at sourceware dot org 2022-02-03 12:22 ` ldv at sourceware dot org
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