5.15-stable review patch. If anyone has any objections, please let me know.

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From: Trond Myklebust trond.myklebust@hammerspace.com

[ Upstream commit 1f214e9c3aef2d0936be971072e991d78a174d71 ]

The Smatch static checker noted that in _nfs4_proc_lookupp(), the flag RPC_TASK_TIMEOUT is being passed as an argument to nfs4_init_sequence(), which is clearly incorrect. Since LOOKUPP is an idempotent operation, nfs4_init_sequence() should not ask the server to cache the result. The RPC_TASK_TIMEOUT flag needs to be passed down to the RPC layer.

Reported-by: Dan Carpenter dan.carpenter@linaro.org Reported-by: Harshit Mogalapalli harshit.m.mogalapalli@oracle.com Fixes: 76998ebb9158 ("NFSv4: Observe the NFS_MOUNT_SOFTREVAL flag in _nfs4_proc_lookupp") Signed-off-by: Trond Myklebust trond.myklebust@hammerspace.com Signed-off-by: Anna Schumaker anna.schumaker@oracle.com Signed-off-by: Sasha Levin sashal@kernel.org --- fs/nfs/nfs4proc.c | 9 ++++++--- 1 file changed, 6 insertions(+), 3 deletions(-)

diff --git a/fs/nfs/nfs4proc.c b/fs/nfs/nfs4proc.c index 5c29e2d383639..768433688cb2f 100644 --- a/fs/nfs/nfs4proc.c +++ b/fs/nfs/nfs4proc.c @@ -4533,16 +4533,19 @@ static int _nfs4_proc_lookupp(struct inode *inode, }; unsigned short task_flags = 0;

- if (NFS_SERVER(inode)->flags & NFS_MOUNT_SOFTREVAL) + if (server->flags & NFS_MOUNT_SOFTREVAL) task_flags |= RPC_TASK_TIMEOUT; + if (server->caps & NFS_CAP_MOVEABLE) + task_flags |= RPC_TASK_MOVEABLE;

args.bitmask = nfs4_bitmask(server, label);

nfs_fattr_init(fattr); + nfs4_init_sequence(&args.seq_args, &res.seq_res, 0, 0);

dprintk("NFS call lookupp ino=0x%lx\n", inode->i_ino); - status = nfs4_call_sync(clnt, server, &msg, &args.seq_args, - &res.seq_res, task_flags); + status = nfs4_do_call_sync(clnt, server, &msg, &args.seq_args, + &res.seq_res, task_flags); dprintk("NFS reply lookupp: %d\n", status); return status; }