From: Aurelien Aptel <[email protected]> commit af3ef3b1031634724a3763606695ebcd113d782b upstream.
If CONFIG_CIFS_ROOT is not set, rootfs mount option is invalid Signed-off-by: Aurelien Aptel <[email protected]> CC: <[email protected]> # v5.11 Signed-off-by: Steve French <[email protected]> Signed-off-by: Greg Kroah-Hartman <[email protected]> --- fs/cifs/fs_context.c | 6 ++++-- 1 file changed, 4 insertions(+), 2 deletions(-) --- a/fs/cifs/fs_context.c +++ b/fs/cifs/fs_context.c @@ -1175,9 +1175,11 @@ static int smb3_fs_context_parse_param(s pr_warn_once("Witness protocol support is experimental\n"); break; case Opt_rootfs: -#ifdef CONFIG_CIFS_ROOT - ctx->rootfs = true; +#ifndef CONFIG_CIFS_ROOT + cifs_dbg(VFS, "rootfs support requires CONFIG_CIFS_ROOT config option\n"); + goto cifs_parse_mount_err; #endif + ctx->rootfs = true; break; case Opt_posixpaths: if (result.negated)
