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cifs: Fix an error pointer dereference in cifs_mount()

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The error handling calls kfree(full_path) so we can't let it be a NULL
pointer.  There used to be a NULL assignment here but we accidentally
deleted it.  Add it back.

Fixes: 7efd081582 ("cifs: document and cleanup dfs mount")
Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: Steve French <stfrench@microsoft.com>
Reviewed-by: Paulo Alcantara (SUSE) <pc@cjr.nz>
This commit is contained in:
Dan Carpenter 2020-08-05 12:52:07 +03:00 committed by Steve French
parent 327a8d76b1
commit 20b135e48c
1 changed files with 1 additions and 0 deletions
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fs/cifs/connect.c
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@ -4886,6 +4886,7 @@ int cifs_mount(struct cifs_sb_info *cifs_sb, struct smb_vol *vol)
full_path = build_unc_path_to_root(vol, cifs_sb, !!count);
if (IS_ERR(full_path)) {
rc = PTR_ERR(full_path);
full_path = NULL;
break;
}
/* Chase referral */