Hi all,
I saw a new NFS failure in 4.13-rc2 kernel when running fstests
generic/126 on NFSv4 mounts, 4.13-rc1 kernel passed the same test.
git bisect pointed the first bad to commit bd8b2441742b.
commit bd8b2441742b49c76bec707757bd9c028ea9838e
Author: Trond Myklebust <trond.myklebust@xxxxxxxxxxxxxxx>
Date: Tue Jul 11 17:54:34 2017 -0400
NFS: Store the raw NFS access mask in the inode's access cache
Signed-off-by: Trond Myklebust <trond.myklebust@xxxxxxxxxxxxxxx>
Signed-off-by: Anna Schumaker <Anna.Schumaker@xxxxxxxxxx>
I can reproduce it manually with these steps:
mount -t nfs -o vers=4.1 server:/export /mnt/nfs
cp /usr/bin/ls /mnt/nfs
chmod 001 /mnt/nfs/ls
chown 99:99 /mnt/nfs/ls
su testuser -c "/mnt/nfs/ls"
(testuser uid and gid are not 99.)
The last command got permission denied with 4.13-rc2.
Thanks,
Eryu
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