From: Long Li <longli-Lp/cVzEoVyZiJJESP9tAQJZ3qXmFLfmx@public.gmane.org>
To: Steve French <sfrench-eUNUBHrolfbYtjvyW6yDsg@public.gmane.org>,
linux-cifs-u79uwXL29TY76Z2rM5mHXA@public.gmane.org,
samba-technical-w/Ol4Ecudpl8XjKLYN78aQ@public.gmane.org,
linux-kernel-u79uwXL29TY76Z2rM5mHXA@public.gmane.org
Cc: Long Li <longli-0li6OtcxBFHby3iVrkZq2A@public.gmane.org>
Subject: [PATCH] cifs: Do not modify mid entry after submitting I/O in cifs_call_async
Date: Wed, 28 Jun 2017 10:50:02 -0700 [thread overview]
Message-ID: <1498672202-30452-1-git-send-email-longli@exchange.microsoft.com> (raw)
From: Long Li <longli-0li6OtcxBFHby3iVrkZq2A@public.gmane.org>
In cifs_call_async, server response may return as soon as I/O is submitted.
Do not touch it after that.
Signed-off-by: Long Li <longli-0li6OtcxBFHby3iVrkZq2A@public.gmane.org>
---
fs/cifs/transport.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/fs/cifs/transport.c b/fs/cifs/transport.c
index 47a125e..ba62aaf 100644
--- a/fs/cifs/transport.c
+++ b/fs/cifs/transport.c
@@ -537,10 +537,10 @@ cifs_call_async(struct TCP_Server_Info *server, struct smb_rqst *rqst,
spin_unlock(&GlobalMid_Lock);
+ cifs_save_when_sent(mid);
cifs_in_send_inc(server);
rc = smb_send_rqst(server, rqst, flags);
cifs_in_send_dec(server);
- cifs_save_when_sent(mid);
if (rc < 0) {
server->sequence_number -= 2;
--
2.7.4
reply other threads:[~2017-06-28 17:50 UTC|newest]
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