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cifs: only set ops for inodes in I_NEW state

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It's generally not safe to reset the inode ops once they've been set. In
the case where the inode was originally thought to be a directory and
then later found to be a DFS referral, this can lead to an oops when we
try to trigger an inode op on it after changing the ops to the blank
referral operations.

Cc: <stable@vger.kernel.org>
Reported-and-Tested-by: Sachin Prabhu <sprabhu@redhat.com>
Signed-off-by: Jeff Layton <jlayton@redhat.com>
Signed-off-by: Steve French <smfrench@gmail.com>
Signed-off-by: Steve French <sfrench@us.ibm.com>
This commit is contained in:
Jeff Layton 2013-05-07 11:28:31 -04:00 committed by Steve French
parent 0e255f1c0c
commit 62106e9627
1 changed files with 2 additions and 1 deletions
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3
fs/cifs/inode.c
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@ -171,7 +171,8 @@ cifs_fattr_to_inode(struct inode *inode, struct cifs_fattr *fattr)
if (fattr->cf_flags & CIFS_FATTR_DFS_REFERRAL)
inode->i_flags |= S_AUTOMOUNT;
cifs_set_ops(inode);
if (inode->i_state & I_NEW)
cifs_set_ops(inode);
}
void