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authorAurelien Aptel <aaptel@suse.com>2020-12-03 21:46:08 +0300
committerSteve French <stfrench@microsoft.com>2020-12-04 02:06:03 +0300
commit59463eb88829f646aed13283fd84d02a475334fe (patch)
tree5d1f843d47fcccd259a9e8cc94c6de58f92d73b1 /fs
parent796317848517292eb951d8876773b98867cf3c28 (diff)
downloadlinux-59463eb88829f646aed13283fd84d02a475334fe.tar.xz
cifs: add NULL check for ses->tcon_ipc
In some scenarios (DFS and BAD_NETWORK_NAME) set_root_set() can be called with a NULL ses->tcon_ipc. Signed-off-by: Aurelien Aptel <aaptel@suse.com> Reviewed-by: Paulo Alcantara (SUSE) <pc@cjr.nz> CC: Stable <stable@vger.kernel.org> Signed-off-by: Steve French <stfrench@microsoft.com>
Diffstat (limited to 'fs')
-rw-r--r--fs/cifs/connect.c3
1 files changed, 2 insertions, 1 deletions
diff --git a/fs/cifs/connect.c b/fs/cifs/connect.c
index 28c1459fb0fc..44f9cce57099 100644
--- a/fs/cifs/connect.c
+++ b/fs/cifs/connect.c
@@ -4546,7 +4546,8 @@ static void set_root_ses(struct cifs_sb_info *cifs_sb, struct cifs_ses *ses,
if (ses) {
spin_lock(&cifs_tcp_ses_lock);
ses->ses_count++;
- ses->tcon_ipc->remap = cifs_remap(cifs_sb);
+ if (ses->tcon_ipc)
+ ses->tcon_ipc->remap = cifs_remap(cifs_sb);
spin_unlock(&cifs_tcp_ses_lock);
}
*root_ses = ses;