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smb: client: fix deadlock in smb2_find_smb_tcon()

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[ Upstream commit 02c418774f ]

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: Sasha Levin <sashal@kernel.org>
This commit is contained in:
Enzo Matsumiya
2024-06-06 13:13:13 -03:00
committed by Greg Kroah-Hartman
parent 78ebec450e
commit b055752675
1 changed files with 1 additions and 1 deletions
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fs/cifs/smb2transport.c
+1 -1
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@@ -207,8 +207,8 @@ smb2_find_smb_tcon(struct TCP_Server_Info *server, __u64 ses_id, __u32 tid)
}
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);