This is a note to let you know that I've just added the patch titled
nfsd: map EBADF
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-map-ebadf.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 d6165b83354cdef17546b89709a0d1340a22636a
Author: Peng Tao <tao.peng@xxxxxxxxxxxxxxx>
Date: Sat Dec 18 20:37:54 2021 -0500
nfsd: map EBADF
[ Upstream commit b3d0db706c77d02055910fcfe2f6eb5155ff9d5e ]
Now that we have open file cache, it is possible that another client
deletes the file and DP will not know about it. Then IO to MDS would
fail with BADSTATEID and knfsd would start state recovery, which
should fail as well and then nfs read/write will fail with EBADF.
And it triggers a WARN() in nfserrno().
-----------[ cut here ]------------
WARNING: CPU: 0 PID: 13529 at fs/nfsd/nfsproc.c:758 nfserrno+0x58/0x70 [nfsd]()
nfsd: non-standard errno: -9
modules linked in: nfsv3 nfs_layout_flexfiles rpcsec_gss_krb5 nfsv4 dns_resolver nfs fscache ip6t_rpfilter ip6t_REJECT nf_reject_ipv6 xt_connt
pata_acpi floppy
CPU: 0 PID: 13529 Comm: nfsd Tainted: G W 4.1.5-00307-g6e6579b #7
Hardware name: VMware, Inc. VMware Virtual Platform/440BX Desktop Reference Platform, BIOS 6.00 09/30/2014
0000000000000000 00000000464e6c9c ffff88079085fba8 ffffffff81789936
0000000000000000 ffff88079085fc00 ffff88079085fbe8 ffffffff810a08ea
ffff88079085fbe8 ffff88080f45c900 ffff88080f627d50 ffff880790c46a48
all Trace:
[<ffffffff81789936>] dump_stack+0x45/0x57
[<ffffffff810a08ea>] warn_slowpath_common+0x8a/0xc0
[<ffffffff810a0975>] warn_slowpath_fmt+0x55/0x70
[<ffffffff81252908>] ? splice_direct_to_actor+0x148/0x230
[<ffffffffa02fb8c0>] ? fsid_source+0x60/0x60 [nfsd]
[<ffffffffa02f9918>] nfserrno+0x58/0x70 [nfsd]
[<ffffffffa02fba57>] nfsd_finish_read+0x97/0xb0 [nfsd]
[<ffffffffa02fc7a6>] nfsd_splice_read+0x76/0xa0 [nfsd]
[<ffffffffa02fcca1>] nfsd_read+0xc1/0xd0 [nfsd]
[<ffffffffa0233af2>] ? svc_tcp_adjust_wspace+0x12/0x30 [sunrpc]
[<ffffffffa03073da>] nfsd3_proc_read+0xba/0x150 [nfsd]
[<ffffffffa02f7a03>] nfsd_dispatch+0xc3/0x210 [nfsd]
[<ffffffffa0233af2>] ? svc_tcp_adjust_wspace+0x12/0x30 [sunrpc]
[<ffffffffa0232913>] svc_process_common+0x453/0x6f0 [sunrpc]
[<ffffffffa0232cc3>] svc_process+0x113/0x1b0 [sunrpc]
[<ffffffffa02f740f>] nfsd+0xff/0x170 [nfsd]
[<ffffffffa02f7310>] ? nfsd_destroy+0x80/0x80 [nfsd]
[<ffffffff810bf3a8>] kthread+0xd8/0xf0
[<ffffffff810bf2d0>] ? kthread_create_on_node+0x1b0/0x1b0
[<ffffffff817912a2>] ret_from_fork+0x42/0x70
[<ffffffff810bf2d0>] ? kthread_create_on_node+0x1b0/0x1b0
Signed-off-by: Peng Tao <tao.peng@xxxxxxxxxxxxxxx>
Signed-off-by: Lance Shelton <lance.shelton@xxxxxxxxxxxxxxx>
Signed-off-by: Trond Myklebust <trond.myklebust@xxxxxxxxxxxxxxx>
Signed-off-by: Chuck Lever <chuck.lever@xxxxxxxxxx>
diff --git a/fs/nfsd/nfsproc.c b/fs/nfsd/nfsproc.c
index b009da1dcbb50..3c5e87805cc8d 100644
--- a/fs/nfsd/nfsproc.c
+++ b/fs/nfsd/nfsproc.c
@@ -845,6 +845,7 @@ nfserrno (int errno)
{ nfserr_io, -EIO },
{ nfserr_nxio, -ENXIO },
{ nfserr_fbig, -E2BIG },
+ { nfserr_stale, -EBADF },
{ nfserr_acces, -EACCES },
{ nfserr_exist, -EEXIST },
{ nfserr_xdev, -EXDEV },
