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| author | kib <kib@FreeBSD.org> | 2013-04-01 09:59:38 +0000 |
|---|---|---|
| committer | kib <kib@FreeBSD.org> | 2013-04-01 09:59:38 +0000 |
| commit | 060b76c80320d06783ff631ada0fc18b70dcab91 (patch) | |
| tree | 1314e50d0d98dd06d49f59461bfb11e907455bd4 /sys/kern/vfs_lookup.c | |
| parent | 14e47b85779a0ab0b25fd1cd1141ef2f69835d00 (diff) | |
| download | FreeBSD-src-060b76c80320d06783ff631ada0fc18b70dcab91.zip FreeBSD-src-060b76c80320d06783ff631ada0fc18b70dcab91.tar.gz | |
Do not call the VOP_LOOKUP() for the doomed directory vnode. The
vnode could be reclaimed while lock upgrade was performed.
Sponsored by: The FreeBSD Foundation
Reported and tested by: pho
Diagnosed and reviewed by: rmacklem
MFC after: 1 week
Diffstat (limited to 'sys/kern/vfs_lookup.c')
| -rw-r--r-- | sys/kern/vfs_lookup.c | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/sys/kern/vfs_lookup.c b/sys/kern/vfs_lookup.c index 94d11f2..cf73231 100644 --- a/sys/kern/vfs_lookup.c +++ b/sys/kern/vfs_lookup.c @@ -698,6 +698,10 @@ unionlookup: VOP_ISLOCKED(dp) == LK_SHARED && (cnp->cn_flags & ISLASTCN) && (cnp->cn_flags & LOCKPARENT)) vn_lock(dp, LK_UPGRADE|LK_RETRY); + if ((dp->v_iflag & VI_DOOMED) != 0) { + error = ENOENT; + goto bad; + } /* * If we're looking up the last component and we need an exclusive * lock, adjust our lkflags. |
