From: Ronnie Sahlberg lsahlber@redhat.com
commit 50630b3f1ada0bf412d3f28e73bac310448d9d6f upstream.
Bugzilla: https://bugzilla.kernel.org/show_bug.cgi?id=213565
cruid should only be used for the initial mount and after this we should use the current users credentials. Ignore the original cruid mount argument when creating a new context for a multiuser mount following a DFS link.
Fixes: 24e0a1eff9e2 ("cifs: switch to new mount api") Cc: stable@vger.kernel.org # 5.11+ Reported-by: Xiaoli Feng xifeng@redhat.com Signed-off-by: Ronnie Sahlberg lsahlber@redhat.com Reviewed-by: Paulo Alcantara (SUSE) pc@cjr.nz Signed-off-by: Steve French stfrench@microsoft.com Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org --- fs/cifs/cifs_dfs_ref.c | 4 ++++ 1 file changed, 4 insertions(+)
--- a/fs/cifs/cifs_dfs_ref.c +++ b/fs/cifs/cifs_dfs_ref.c @@ -208,6 +208,10 @@ char *cifs_compose_mount_options(const c else noff = tkn_e - (sb_mountdata + off) + 1;
+ if (strncasecmp(sb_mountdata + off, "cruid=", 6) == 0) { + off += noff; + continue; + } if (strncasecmp(sb_mountdata + off, "unc=", 4) == 0) { off += noff; continue;