This is a note to let you know that I've just added the patch titled
NFSv4: Don't call put_rpccred() under the rcu_read_lock()
to the 3.14-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:
nfsv4-don-t-call-put_rpccred-under-the-rcu_read_lock.patch
and it can be found in the queue-3.14 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
>From 7c0af9ffb7bb4e5355470fa60b3eb711ddf226fa Mon Sep 17 00:00:00 2001
From: Trond Myklebust <trond.myklebust@xxxxxxxxxxxxxxx>
Date: Thu, 26 Feb 2015 12:54:46 -0500
Subject: NFSv4: Don't call put_rpccred() under the rcu_read_lock()
From: Trond Myklebust <trond.myklebust@xxxxxxxxxxxxxxx>
commit 7c0af9ffb7bb4e5355470fa60b3eb711ddf226fa upstream.
put_rpccred() can sleep.
Fixes: 8f649c3762547 ("NFSv4: Fix the locking in nfs_inode_reclaim_delegation()")
Signed-off-by: Trond Myklebust <trond.myklebust@xxxxxxxxxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
fs/nfs/delegation.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
--- a/fs/nfs/delegation.c
+++ b/fs/nfs/delegation.c
@@ -161,8 +161,8 @@ void nfs_inode_reclaim_delegation(struct
&delegation->flags);
NFS_I(inode)->delegation_state = delegation->type;
spin_unlock(&delegation->lock);
- put_rpccred(oldcred);
rcu_read_unlock();
+ put_rpccred(oldcred);
trace_nfs4_reclaim_delegation(inode, res->delegation_type);
} else {
/* We appear to have raced with a delegation return. */
Patches currently in stable-queue which might be from trond.myklebust@xxxxxxxxxxxxxxx are
queue-3.14/nfsv4-don-t-call-put_rpccred-under-the-rcu_read_lock.patch
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