Author: rmacklem
Date: Mon Feb 17 19:40:26 2020
New Revision: 358037
URL: https://svnweb.freebsd.org/changeset/base/358037
Log:
MFC: r357149
Fix a crash in the NFSv4 server.
The PR reported a crash that occurred when a file was removed while
client(s) were actively doing lock operations on it.
Since nfsvno_getvp() will return NULL when the file does not exist,
the bug was obvious and easy to fix via this patch. It is a little
surprising that this wasn't found sooner, but I guess the above
case rarely occurs.
PR: 242768
Modified:
stable/11/sys/fs/nfsserver/nfs_nfsdstate.c
Directory Properties:
stable/11/ (props changed)
Modified: stable/11/sys/fs/nfsserver/nfs_nfsdstate.c
==============================================================================
--- stable/11/sys/fs/nfsserver/nfs_nfsdstate.c Mon Feb 17 19:32:54 2020
(r358036)
+++ stable/11/sys/fs/nfsserver/nfs_nfsdstate.c Mon Feb 17 19:40:26 2020
(r358037)
@@ -1483,7 +1483,8 @@ nfsrv_freeallnfslocks(struct nfsstate *stp, vnode_t vp
tvp = NULL;
else if (vp == NULL && cansleep != 0) {
tvp = nfsvno_getvp(&lfp->lf_fh);
- NFSVOPUNLOCK(tvp, 0);
+ if (tvp != NULL)
+ NFSVOPUNLOCK(tvp, 0);
} else
tvp = vp;
gottvp = 1;
_______________________________________________
svn-src-all@freebsd.org mailing list
https://lists.freebsd.org/mailman/listinfo/svn-src-all
To unsubscribe, send any mail to "svn-src-all-unsubscr...@freebsd.org"
