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| author |   john stultz <johnstul@us.ibm.com> | 2007-08-22 14:01:10 -0700 |
|---|---|---|
| committer |   Linus Torvalds <torvalds@woody.linux-foundation.org> | 2007-08-22 19:52:44 -0700 |
| commit | 187226f57f1381cfc63216979b4375f30e593795 (patch) | |
| tree | 0bda40993e1794363bf6570614584b03f1de55e9 /kernel | |
| parent | Document Linux Memory Policy (diff) | |
| download | linux-dev-187226f57f1381cfc63216979b4375f30e593795.tar.xz linux-dev-187226f57f1381cfc63216979b4375f30e593795.zip | |
futex_unlock_pi() hurts my brain and may cause application deadlock
Avoid futex_unlock_pi returning -EFAULT (which results in deadlock), by
clearing uval before jumping to retry_locked.
Signed-off-by: John Stultz <johnstul@us.ibm.com>
Acked-by: Steven Rostedt <rostedt@goodmis.org>
Cc: Ingo Molnar <mingo@elte.hu>
Cc: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'kernel')
| -rw-r--r-- | kernel/futex.c | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/kernel/futex.c b/kernel/futex.c index 3415e9ad1391..e8935b195e88 100644 --- a/kernel/futex.c +++ b/kernel/futex.c @@ -1670,6 +1670,7 @@ pi_faulted: attempt); if (ret) goto out; + uval = 0; goto retry_unlocked; } |