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| author | cperciva <cperciva@FreeBSD.org> | 2004-05-03 00:48:11 +0000 |
|---|---|---|
| committer | cperciva <cperciva@FreeBSD.org> | 2004-05-03 00:48:11 +0000 |
| commit | fe4e3a8b16f53102ecc8d38bc34da4d3b8b103c8 (patch) | |
| tree | 357e06781027d7bd0973797fe3930923f5872b44 /sys/kern/kern_clock.c | |
| parent | c219e5f35aa02954b3817364961431b5f497bb9f (diff) | |
| download | FreeBSD-src-fe4e3a8b16f53102ecc8d38bc34da4d3b8b103c8.zip FreeBSD-src-fe4e3a8b16f53102ecc8d38bc34da4d3b8b103c8.tar.gz | |
Fix a race condition which could result in profprocs being decremented
more than once if stopprofclock is called multiple times on the same
process.
Diffstat (limited to 'sys/kern/kern_clock.c')
| -rw-r--r-- | sys/kern/kern_clock.c | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/sys/kern/kern_clock.c b/sys/kern/kern_clock.c index 0661c61..a4485a4 100644 --- a/sys/kern/kern_clock.c +++ b/sys/kern/kern_clock.c @@ -353,6 +353,8 @@ stopprofclock(p) "stopprof", 0); p->p_flag &= ~P_STOPPROF; } + if ((p->p_flag & P_PROFIL) == 0) + return; mtx_lock_spin(&sched_lock); p->p_flag &= ~P_PROFIL; if (--profprocs == 0) |
