diff options
| author | Jeff Layton <jlayton@kernel.org> | 2026-06-11 16:00:54 -0400 |
|---|---|---|
| committer | Chuck Lever <cel@kernel.org> | 2026-08-10 09:54:35 -0400 |
| commit | 4e475be769aa9f7a2c1ce55a2b8592cfccacddcc (patch) | |
| tree | 60f5ebf0b09232c0bafbe700a1b966876a622300 | |
| parent | 246a90a5109bb2857db41f491277882ee2743b26 (diff) | |
nfsd: add fh_want_write() for early-verified SETATTR in nfsd_proc_setattr()
The BOTH_TIME_SET branch calls fh_verify() early so setattr_prepare()
can inspect the dentry. This causes nfsd_setattr() to skip
fh_want_write(), so notify_change() runs without a mount write
reference.
Add the missing fh_want_write() call after the early fh_verify().
Fixes: cc265089ce1b ("nfsd: Disable NFSv2 timestamp workaround for NFSv3+")
Cc: stable@vger.kernel.org
Assisted-by: Claude:claude-opus-4-8
Signed-off-by: Jeff Layton <jlayton@kernel.org>
Link: https://patch.msgid.link/20260611-nfsd-testing-v2-11-5b90e276f2d9@kernel.org
Signed-off-by: Chuck Lever <cel@kernel.org>
| -rw-r--r-- | fs/nfsd/nfsproc.c | 7 |
1 files changed, 7 insertions, 0 deletions
diff --git a/fs/nfsd/nfsproc.c b/fs/nfsd/nfsproc.c index 8873033d1e82..a73d5c259cd9 100644 --- a/fs/nfsd/nfsproc.c +++ b/fs/nfsd/nfsproc.c @@ -82,6 +82,7 @@ nfsd_proc_setattr(struct svc_rqst *rqstp) .na_iattr = iap, }; struct svc_fh *fhp; + int hosterr; dprintk("nfsd: SETATTR %s, valid=%x, size=%ld\n", SVCFH_fmt(&argp->fh), @@ -117,6 +118,12 @@ nfsd_proc_setattr(struct svc_rqst *rqstp) if (resp->status != nfs_ok) goto out; + hosterr = fh_want_write(fhp); + if (hosterr) { + resp->status = nfserrno(hosterr); + goto out; + } + if (delta < 0) delta = -delta; if (delta < MAX_TOUCH_TIME_ERROR && |