From 40e2ed0e562a4f040174eb77678fec61ef7b4e7c Mon Sep 17 00:00:00 2001 From: Winston Wen Date: Mon, 26 Jun 2023 11:42:57 +0800 Subject: [PATCH] cifs: fix session state check in smb2_find_smb_ses commit 66be5c48ee1b5b8c919cc329fe6d32e16badaa40 upstream. Chech the session state and skip it if it's exiting. Signed-off-by: Winston Wen Reviewed-by: Shyam Prasad N Cc: stable@vger.kernel.org Signed-off-by: Steve French Signed-off-by: Greg Kroah-Hartman --- fs/smb/client/smb2transport.c | 7 +++++++ 1 file changed, 7 insertions(+) diff --git a/fs/smb/client/smb2transport.c b/fs/smb/client/smb2transport.c index 790acf65a092..22954a9c7a6c 100644 --- a/fs/smb/client/smb2transport.c +++ b/fs/smb/client/smb2transport.c @@ -153,7 +153,14 @@ smb2_find_smb_ses_unlocked(struct TCP_Server_Info *server, __u64 ses_id) list_for_each_entry(ses, &pserver->smb_ses_list, smb_ses_list) { if (ses->Suid != ses_id) continue; + + spin_lock(&ses->ses_lock); + if (ses->ses_status == SES_EXITING) { + spin_unlock(&ses->ses_lock); + continue; + } ++ses->ses_count; + spin_unlock(&ses->ses_lock); return ses; }