From: Scott Mayhew smayhew@redhat.com
commit 270d73e6507f9c7fff43844d74f86365df000b36 upstream.
Commit abdb1742a312 removed code that clears ctx->username when sec=none, so attempting to mount with '-o sec=none' now fails with -EACCES. Fix it by adding that logic to the parsing of the 'sec' option, as well as checking if the mount is using null auth before setting the username when parsing the 'user' option.
Fixes: abdb1742a312 ("cifs: get rid of mount options string parsing") Cc: stable@vger.kernel.org Signed-off-by: Scott Mayhew smayhew@redhat.com Reviewed-by: Paulo Alcantara (SUSE) pc@manguebit.com Signed-off-by: Steve French stfrench@microsoft.com Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org --- fs/smb/client/fs_context.c | 4 ++++ 1 file changed, 4 insertions(+)
diff --git a/fs/smb/client/fs_context.c b/fs/smb/client/fs_context.c index 4946a0c59600..67e16c2ac90e 100644 --- a/fs/smb/client/fs_context.c +++ b/fs/smb/client/fs_context.c @@ -231,6 +231,8 @@ cifs_parse_security_flavors(struct fs_context *fc, char *value, struct smb3_fs_c break; case Opt_sec_none: ctx->nullauth = 1; + kfree(ctx->username); + ctx->username = NULL; break; default: cifs_errorf(fc, "bad security option: %s\n", value); @@ -1201,6 +1203,8 @@ static int smb3_fs_context_parse_param(struct fs_context *fc, case Opt_user: kfree(ctx->username); ctx->username = NULL; + if (ctx->nullauth) + break; if (strlen(param->string) == 0) { /* null user, ie. anonymous authentication */ ctx->nullauth = 1;