diff options
| author | jeff <jeff@FreeBSD.org> | 2003-08-31 00:06:07 +0000 |
|---|---|---|
| committer | jeff <jeff@FreeBSD.org> | 2003-08-31 00:06:07 +0000 |
| commit | 0008f2bb1d90e6b98f1a0fc612585a31ffd959cf (patch) | |
| tree | 8b70fd2ab65aa9f5c60891abcc126739a124482e /sys/kern/vfs_bio.c | |
| parent | bb52206dba60f156a528c2e9539a344c4fa40991 (diff) | |
| download | FreeBSD-src-0008f2bb1d90e6b98f1a0fc612585a31ffd959cf.zip FreeBSD-src-0008f2bb1d90e6b98f1a0fc612585a31ffd959cf.tar.gz | |
- In some cases bp->b_vp can be NULL in brelse, don't try to lock the
interlock in that case.
Found by: alc
Diffstat (limited to 'sys/kern/vfs_bio.c')
| -rw-r--r-- | sys/kern/vfs_bio.c | 10 |
1 files changed, 6 insertions, 4 deletions
diff --git a/sys/kern/vfs_bio.c b/sys/kern/vfs_bio.c index fa6ee58..c18795b 100644 --- a/sys/kern/vfs_bio.c +++ b/sys/kern/vfs_bio.c @@ -1253,10 +1253,12 @@ brelse(struct buf * bp) * cannot be set while we hold the buf lock, it can only be * cleared if it is already pending. */ - VI_LOCK(bp->b_vp); - if (!(bp->b_vflags & BV_BKGRDINPROG)) - bp->b_flags |= B_RELBUF; - VI_UNLOCK(bp->b_vp); + if (bp->b_vp) { + VI_LOCK(bp->b_vp); + if (!(bp->b_vflags & BV_BKGRDINPROG)) + bp->b_flags |= B_RELBUF; + VI_UNLOCK(bp->b_vp); + } } /* |
