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[Bug nptl/20263] robust mutex deadlocks if other thread requests timedlock (Only arm/linux)
- From: "cvs-commit at gcc dot gnu.org" <sourceware-bugzilla at sourceware dot org>
- To: glibc-bugs at sourceware dot org
- Date: Thu, 07 Jul 2016 12:35:41 +0000
- Subject: [Bug nptl/20263] robust mutex deadlocks if other thread requests timedlock (Only arm/linux)
- Auto-submitted: auto-generated
- References: <bug-20263-131@http.sourceware.org/bugzilla/>
https://sourceware.org/bugzilla/show_bug.cgi?id=20263
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- Log -----------------------------------------------------------------
https://sourceware.org/git/gitweb.cgi?p=glibc.git;h=eaee348ce71c34faa7a1122529aa9b9807a269c2
commit eaee348ce71c34faa7a1122529aa9b9807a269c2
Author: Andreas Schwab <schwab@suse.de>
Date: Thu Jun 16 13:58:02 2016 +0200
Add test case for bug 20263
https://sourceware.org/git/gitweb.cgi?p=glibc.git;h=d3016ce02c7ba85c1c619771bb1aa349038626cd
commit d3016ce02c7ba85c1c619771bb1aa349038626cd
Author: Jiyoung Yun <t2wish@gmail.com>
Date: Thu Jun 30 01:15:44 2016 +0900
Fix robust mutex daedlock [BZ #20263]
In Linux/ARM environment, a robust mutex can't catch the timeout result
when it is already owned by other thread and requests to try lock with
a specific time value(pthread_mutex_timedlock). The futex already returns
the ETIMEDOUT result but there is no check the return value and it makes
a deadlock.
* nptl/lowlevelrobustlock.c: Implement ETIMEDOUT logic.
-----------------------------------------------------------------------
Summary of changes:
ChangeLog | 11 +++++
nptl/Makefile | 2 +-
nptl/lowlevelrobustlock.c | 7 ++-
nptl/tst-robust10.c | 110 +++++++++++++++++++++++++++++++++++++++++++++
4 files changed, 127 insertions(+), 3 deletions(-)
create mode 100644 nptl/tst-robust10.c
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