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[Bug nptl/19861] libpthread IFUNC resolver for fork can lead to crash
- From: "cvs-commit at gcc dot gnu.org" <sourceware-bugzilla at sourceware dot org>
- To: glibc-bugs at sourceware dot org
- Date: Tue, 21 Nov 2017 20:37:19 +0000
- Subject: [Bug nptl/19861] libpthread IFUNC resolver for fork can lead to crash
- Auto-submitted: auto-generated
- References: <bug-19861-131@http.sourceware.org/bugzilla/>
https://sourceware.org/bugzilla/show_bug.cgi?id=19861
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https://sourceware.org/git/gitweb.cgi?p=glibc.git;h=71170eba2af41e08d51cf9d7b1ded5fd4b0b5c9c
commit 71170eba2af41e08d51cf9d7b1ded5fd4b0b5c9c
Author: Andreas Schwab <schwab@suse.de>
Date: Tue Aug 8 17:44:32 2017 +0200
Add test for bug 21041
(cherry picked from commit 40c06a3d0450365e9675fe26f34fc56ce8497325)
https://sourceware.org/git/gitweb.cgi?p=glibc.git;h=4db8f362c13c7239311db95bd7f96d4bce0769f3
commit 4db8f362c13c7239311db95bd7f96d4bce0769f3
Author: Andreas Schwab <schwab@suse.de>
Date: Wed Aug 9 10:36:08 2017 +0200
Fix s390 version of pt-longjmp.c
(cherry picked from commit 5797b410a87f6f6f6d3661d730fac320cbd5f270)
https://sourceware.org/git/gitweb.cgi?p=glibc.git;h=88758c4ad3f046d050bc2c3ae0f172b6524ca6c2
commit 88758c4ad3f046d050bc2c3ae0f172b6524ca6c2
Author: Andreas Schwab <schwab@suse.de>
Date: Tue Aug 8 16:21:58 2017 +0200
Don't use IFUNC resolver for longjmp or system in libpthread (bug 21041)
Unlike the vfork forwarder and like the fork forwarder as in bug 19861,
there won't be a problem when the compiler does not turn this into a tail
call.
(cherry picked from commit fc5ad7024c620cdfe9b76e94638aac83b99c5bf8)
-----------------------------------------------------------------------
Summary of changes:
ChangeLog | 21 +++++++++++++
nptl/Makefile | 6 ++-
nptl/pt-longjmp.c | 31 ++++++-------------
nptl/pt-system.c | 24 +++++----------
.../lcong48.c => nptl/tst-compat-forwarder-mod.c | 10 ++++--
.../tst-compat-forwarder.c | 23 ++++++--------
sysdeps/unix/sysv/linux/s390/pt-longjmp.c | 4 +-
7 files changed, 61 insertions(+), 58 deletions(-)
copy stdlib/lcong48.c => nptl/tst-compat-forwarder-mod.c (77%)
copy math/test-fe-snans-always-signal.c => nptl/tst-compat-forwarder.c (67%)
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