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nptl: Fix abort in case of set*id failure [BZ #17135]

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If a call to the set*id functions fails in a multi-threaded program,
the abort introduced in commit 13f7fe35ae
was triggered.

We address by checking that all calls to set*id on all threads give
the same result, and only abort if we see success followed by failure
(or vice versa).
This commit is contained in:
Florian Weimer
2014-07-10 17:34:46 +02:00
parent bc1da1765e
commit 771eb1415f
8 changed files with 149 additions and 6 deletions
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2
nptl/pthreadP.h
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@ -578,6 +578,8 @@ extern void _pthread_cleanup_pop_restore (struct _pthread_cleanup_buffer *buffer
extern void __nptl_deallocate_tsd (void) attribute_hidden;
extern void __nptl_setxid_error (struct xid_command *cmdp, int error)
attribute_hidden;
extern int __nptl_setxid (struct xid_command *cmdp) attribute_hidden;
#ifndef SHARED
extern void __nptl_set_robust (struct pthread *self);