korg/linux
0
0
Fork 0
mirror of https://mirrors.bfsu.edu.cn/git/linux.git synced 2024-11-29 07:04:10 +08:00
Code Issues Packages Projects Releases Wiki Activity

cifs: add WARN_ON for when chan_count goes below minimum

Browse Source 
chan_count keeps track of the total number of channels.
Since at least the primary channel will always be connected,
this value can never go below 1. Warn if that happens.

Signed-off-by: Shyam Prasad N <sprasad@microsoft.com>
Signed-off-by: Steve French <stfrench@microsoft.com>
This commit is contained in:
Shyam Prasad N 2021-07-19 14:04:11 +00:00 committed by Steve French
parent 66eb0c6e66
commit 2e0fa298d1
1 changed files with 5 additions and 0 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

5
fs/cifs/sess.c
View File

@ -347,6 +347,11 @@ out:
/* we rely on all bits beyond chan_count to be clear */
cifs_chan_clear_need_reconnect(ses, chan->server);
ses->chan_count--;
/*
* chan_count should never reach 0 as at least the primary
* channel is always allocated
*/
WARN_ON(ses->chan_count < 1);
spin_unlock(&ses->chan_lock);
}