From: Enzo Matsumiya <ematsumiya@xxxxxxx>
commit 02c418774f76a0a36a6195c9dbf8971eb4130a15 upstream.
Unlock cifs_tcp_ses_lock before calling cifs_put_smb_ses() to avoid such
deadlock.
Cc: stable@xxxxxxxxxxxxxxx
Signed-off-by: Enzo Matsumiya <ematsumiya@xxxxxxx>
Reviewed-by: Shyam Prasad N <sprasad@xxxxxxxxxxxxx>
Reviewed-by: Paulo Alcantara (Red Hat) <pc@xxxxxxxxxxxxx>
Signed-off-by: Steve French <stfrench@xxxxxxxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
fs/smb/client/smb2transport.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
--- a/fs/smb/client/smb2transport.c
+++ b/fs/smb/client/smb2transport.c
@@ -213,8 +213,8 @@ smb2_find_smb_tcon(struct TCP_Server_Inf
}
tcon = smb2_find_smb_sess_tcon_unlocked(ses, tid);
if (!tcon) {
- cifs_put_smb_ses(ses);
spin_unlock(&cifs_tcp_ses_lock);
+ cifs_put_smb_ses(ses);
return NULL;
}
spin_unlock(&cifs_tcp_ses_lock);
Patches currently in stable-queue which might be from ematsumiya@xxxxxxx are
queue-6.1/smb-client-fix-deadlock-in-smb2_find_smb_tcon.patch
