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| author | Ingo Molnar <mingo@elte.hu> | 2008-12-01 22:36:13 +0300 |
|---|---|---|
| committer | Ingo Molnar <mingo@elte.hu> | 2008-12-01 22:36:13 +0300 |
| commit | f6d2e6f57bba66272b28dd20c949b14ce39cb804 (patch) | |
| tree | 2bf153af4d5b4b33ad2c1e88347c7fd752fb6332 /kernel/posix-cpu-timers.c | |
| parent | 8caac56305cef98f9357b060a77939d17699937d (diff) | |
| parent | 7b1dedca42ac0d0d0be01e39d8461bb53a2389b3 (diff) | |
| download | linux-f6d2e6f57bba66272b28dd20c949b14ce39cb804.tar.xz | |
Merge branch 'x86/urgent' into x86/iommu
Diffstat (limited to 'kernel/posix-cpu-timers.c')
| -rw-r--r-- | kernel/posix-cpu-timers.c | 7 |
1 files changed, 5 insertions, 2 deletions
diff --git a/kernel/posix-cpu-timers.c b/kernel/posix-cpu-timers.c index 153dcb2639c3..895337b16a24 100644 --- a/kernel/posix-cpu-timers.c +++ b/kernel/posix-cpu-timers.c @@ -1308,9 +1308,10 @@ static inline int task_cputime_expired(const struct task_cputime *sample, */ static inline int fastpath_timer_check(struct task_struct *tsk) { - struct signal_struct *sig = tsk->signal; + struct signal_struct *sig; - if (unlikely(!sig)) + /* tsk == current, ensure it is safe to use ->signal/sighand */ + if (unlikely(tsk->exit_state)) return 0; if (!task_cputime_zero(&tsk->cputime_expires)) { @@ -1323,6 +1324,8 @@ static inline int fastpath_timer_check(struct task_struct *tsk) if (task_cputime_expired(&task_sample, &tsk->cputime_expires)) return 1; } + + sig = tsk->signal; if (!task_cputime_zero(&sig->cputime_expires)) { struct task_cputime group_sample; |