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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 21:16:00 +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=0e6f64d9d04a9a26a048d1fb1bf1ebdb6739c5af
commit 0e6f64d9d04a9a26a048d1fb1bf1ebdb6739c5af
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=06e775f4646f823cb858f50258bbe5a6f1e6bbe1
commit 06e775f4646f823cb858f50258bbe5a6f1e6bbe1
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=8182ccd9b8f9e6474712ddc904930e150f96da36
commit 8182ccd9b8f9e6474712ddc904930e150f96da36
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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