Author: kib
Date: Fri Apr 12 17:11:50 2019
New Revision: 346157
URL: https://svnweb.freebsd.org/changeset/base/346157
Log:
Ignore doomed vnodes in tmpfs_update_mtime().
Otherwise we might dereference NULL vp->v_data after
VP_TO_TMPFS_NODE().
Reported and tested by: pho
Sponsored by: The FreeBSD Foundation
MFC after: 1 week
Modified:
head/sys/fs/tmpfs/tmpfs_vfsops.c
Modified: head/sys/fs/tmpfs/tmpfs_vfsops.c
==============================================================================
--- head/sys/fs/tmpfs/tmpfs_vfsops.c Fri Apr 12 15:15:27 2019
(r346156)
+++ head/sys/fs/tmpfs/tmpfs_vfsops.c Fri Apr 12 17:11:50 2019
(r346157)
@@ -173,7 +173,7 @@ tmpfs_update_mtime(struct mount *mp, bool lazy)
* metadata changes now.
*/
if (!lazy || (obj->flags & OBJ_TMPFS_DIRTY) != 0) {
- if (vget(vp, LK_EXCLUSIVE | LK_RETRY | LK_INTERLOCK,
+ if (vget(vp, LK_EXCLUSIVE | LK_INTERLOCK,
curthread) != 0)
continue;
tmpfs_check_mtime(vp);
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