diff options
| author | tanimura <tanimura@FreeBSD.org> | 2002-05-03 05:32:25 +0000 |
|---|---|---|
| committer | tanimura <tanimura@FreeBSD.org> | 2002-05-03 05:32:25 +0000 |
| commit | 58f1f5c532ae9a81c60b6a1a7e54ad895e064a72 (patch) | |
| tree | 5b920d700adbb2e0fafe50281dbb6710febcf995 /sys/kern/kern_proc.c | |
| parent | 20d0f94ddc7dea6947e89c901881ab755ae32d34 (diff) | |
| download | FreeBSD-src-58f1f5c532ae9a81c60b6a1a7e54ad895e064a72.zip FreeBSD-src-58f1f5c532ae9a81c60b6a1a7e54ad895e064a72.tar.gz | |
Fix the lock order reversal between the sigio lock and a process/pgrp lock in
funsetownlst() by locking the sigio lock across funsetownlst().
Diffstat (limited to 'sys/kern/kern_proc.c')
| -rw-r--r-- | sys/kern/kern_proc.c | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/sys/kern/kern_proc.c b/sys/kern/kern_proc.c index 7561e60..d68c02e 100644 --- a/sys/kern/kern_proc.c +++ b/sys/kern/kern_proc.c @@ -474,6 +474,7 @@ pgdelete(pgrp) PGRP_LOCK_ASSERT(pgrp, MA_NOTOWNED); SESS_LOCK_ASSERT(pgrp->pg_session, MA_NOTOWNED); + SIGIO_LOCK(); PGRP_LOCK(pgrp); /* @@ -481,6 +482,7 @@ pgdelete(pgrp) * F_SETOWN with our pgid. */ funsetownlst(&pgrp->pg_sigiolst); + SIGIO_UNLOCK(); if (pgrp->pg_session->s_ttyp != NULL && pgrp->pg_session->s_ttyp->t_pgrp == pgrp) |
