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smb: client: fix deadlock in smb2_find_smb_tcon()

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commit 02c418774f76a0a36a6195c9dbf8971eb4130a15 upstream.

Unlock cifs_tcp_ses_lock before calling cifs_put_smb_ses() to avoid such
deadlock.

Cc: stable@vger.kernel.org
Signed-off-by: Enzo Matsumiya <ematsumiya@suse.de>
Reviewed-by: Shyam Prasad N <sprasad@microsoft.com>
Reviewed-by: Paulo Alcantara (Red Hat) <pc@manguebit.com>
Signed-off-by: Steve French <stfrench@microsoft.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Enzo Matsumiya 2024-06-06 13:13:13 -03:00 committed by Greg Kroah-Hartman
parent 3174d8b7c9
commit b09b556e48
1 changed files with 1 additions and 1 deletions
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2
fs/smb/client/smb2transport.c
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@ -213,8 +213,8 @@ smb2_find_smb_tcon(struct TCP_Server_Info *server, __u64 ses_id, __u32 tid)
} }
tcon = smb2_find_smb_sess_tcon_unlocked(ses, tid); tcon = smb2_find_smb_sess_tcon_unlocked(ses, tid);
if (!tcon) { if (!tcon) {
cifs_put_smb_ses(ses);
spin_unlock(&cifs_tcp_ses_lock); spin_unlock(&cifs_tcp_ses_lock);
cifs_put_smb_ses(ses);
return NULL; return NULL;
} }
spin_unlock(&cifs_tcp_ses_lock); spin_unlock(&cifs_tcp_ses_lock);