This is a note to let you know that I've just added the patch titled
NFSD: copy the whole verifier in nfsd_copy_write_verifier
to the 5.15-stable tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary
The filename of the patch is:
nfsd-copy-the-whole-verifier-in-nfsd_copy_write_veri.patch
and it can be found in the queue-5.15 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
commit 1827d61a325e6d14a7a1b38474fa7c61ba79289f
Author: Chuck Lever <chuck.lever@xxxxxxxxxx>
Date: Tue Feb 14 10:07:59 2023 -0500
NFSD: copy the whole verifier in nfsd_copy_write_verifier
[ Upstream commit 90d2175572470ba7f55da8447c72ddd4942923c4 ]
Currently, we're only memcpy'ing the first __be32. Ensure we copy into
both words.
Fixes: 91d2e9b56cf5 ("NFSD: Clean up the nfsd_net::nfssvc_boot field")
Reported-by: Jeff Layton <jlayton@xxxxxxxxxx>
Signed-off-by: Chuck Lever <chuck.lever@xxxxxxxxxx>
diff --git a/fs/nfsd/nfssvc.c b/fs/nfsd/nfssvc.c
index 325d3d3f12110..a0ecec54d3d7d 100644
--- a/fs/nfsd/nfssvc.c
+++ b/fs/nfsd/nfssvc.c
@@ -363,7 +363,7 @@ void nfsd_copy_write_verifier(__be32 verf[2], struct nfsd_net *nn)
do {
read_seqbegin_or_lock(&nn->writeverf_lock, &seq);
- memcpy(verf, nn->writeverf, sizeof(*verf));
+ memcpy(verf, nn->writeverf, sizeof(nn->writeverf));
} while (need_seqretry(&nn->writeverf_lock, seq));
done_seqretry(&nn->writeverf_lock, seq);
}
