From patchwork Sat Apr 8 00:09:57 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Josh Poimboeuf X-Patchwork-Id: 672254 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id B66D9C77B75 for ; Sat, 8 Apr 2023 00:10:28 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S230074AbjDHAK0 (ORCPT ); Fri, 7 Apr 2023 20:10:26 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:60052 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S229753AbjDHAKV (ORCPT ); Fri, 7 Apr 2023 20:10:21 -0400 Received: from dfw.source.kernel.org (dfw.source.kernel.org [139.178.84.217]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id AAC4C1206F; Fri, 7 Apr 2023 17:10:20 -0700 (PDT) Received: from smtp.kernel.org (relay.kernel.org [52.25.139.140]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by dfw.source.kernel.org (Postfix) with ESMTPS id 8BDB064D4F; Sat, 8 Apr 2023 00:10:20 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id 81D6CC433EF; Sat, 8 Apr 2023 00:10:19 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1680912620; bh=Y24E//AFgJa1BYqzIZQkT51HDOY1pbQOmULD9FbfvAc=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=DHa2zWGkNnPCMRm5l7XNKscXmiMhJV1YxIpVRbFAqdMBe7z/X2yG/UFRJQigvmnFe dzgvW+MBR216DGe/Cu7iofmfmGk1D/4G++oRoPy1Am9LU7Mcy7zPIbQy5sI5BHz3F4 6Mqzz2sM59+tej9aHjLWwob+2cv0rxYcJO8YSJCBTWFFfE7GQ2bDtgLh3J9Y6XIWHb exDJ3DVS9kBlnFOJfX833qv7Kch3vUQkiEZAub5Ok9nPCH+X6iMHJNC5b/VAp+BTDF f7PqKWuQrT0MukhkYsVbpgtIHk+/922FxoWEI/DObimNdhnBwKdV+NLkpCAfd397HC 1+mrwMAQNE8iA== From: Josh Poimboeuf To: x86@kernel.org Cc: linux-kernel@vger.kernel.org, Peter Zijlstra , Miroslav Benes , linux-btrfs@vger.kernel.org, Mark Rutland , linux-scsi@vger.kernel.org, linux-hyperv@vger.kernel.org, Arnd Bergmann , "Guilherme G . Piccoli" , Michael Kelley , kernel test robot Subject: [PATCH 04/11] btrfs: Mark btrfs_assertfail() __noreturn Date: Fri, 7 Apr 2023 17:09:57 -0700 Message-Id: X-Mailer: git-send-email 2.39.2 In-Reply-To: References: MIME-Version: 1.0 Content-type: text/plain Precedence: bulk List-ID: X-Mailing-List: linux-scsi@vger.kernel.org Fixes a bunch of warnings including: vmlinux.o: warning: objtool: select_reloc_root+0x314: unreachable instruction vmlinux.o: warning: objtool: finish_inode_if_needed+0x15b1: unreachable instruction vmlinux.o: warning: objtool: get_bio_sector_nr+0x259: unreachable instruction vmlinux.o: warning: objtool: raid_wait_read_end_io+0xc26: unreachable instruction vmlinux.o: warning: objtool: raid56_parity_alloc_scrub_rbio+0x37b: unreachable instruction ... Reported-by: kernel test robot Link: https://lore.kernel.org/oe-kbuild-all/202302210709.IlXfgMpX-lkp@intel.com/ Signed-off-by: Josh Poimboeuf --- fs/btrfs/messages.c | 2 +- fs/btrfs/messages.h | 2 +- tools/objtool/check.c | 1 + 3 files changed, 3 insertions(+), 2 deletions(-) diff --git a/fs/btrfs/messages.c b/fs/btrfs/messages.c index fde5aaa6e7c9..310a05cf95ef 100644 --- a/fs/btrfs/messages.c +++ b/fs/btrfs/messages.c @@ -253,7 +253,7 @@ void __cold _btrfs_printk(const struct btrfs_fs_info *fs_info, const char *fmt, #endif #ifdef CONFIG_BTRFS_ASSERT -void __cold btrfs_assertfail(const char *expr, const char *file, int line) +void __cold __noreturn btrfs_assertfail(const char *expr, const char *file, int line) { pr_err("assertion failed: %s, in %s:%d\n", expr, file, line); BUG(); diff --git a/fs/btrfs/messages.h b/fs/btrfs/messages.h index 8c516ee58ff9..ac2d1982ba3d 100644 --- a/fs/btrfs/messages.h +++ b/fs/btrfs/messages.h @@ -160,7 +160,7 @@ do { \ } while (0) #ifdef CONFIG_BTRFS_ASSERT -void __cold btrfs_assertfail(const char *expr, const char *file, int line); +void __cold __noreturn btrfs_assertfail(const char *expr, const char *file, int line); #define ASSERT(expr) \ (likely(expr) ? (void)0 : btrfs_assertfail(#expr, __FILE__, __LINE__)) diff --git a/tools/objtool/check.c b/tools/objtool/check.c index 4e89342dd8fb..a8714d62074e 100644 --- a/tools/objtool/check.c +++ b/tools/objtool/check.c @@ -204,6 +204,7 @@ static bool __dead_end_function(struct objtool_file *file, struct symbol *func, "__ubsan_handle_builtin_unreachable", "arch_call_rest_init", "arch_cpu_idle_dead", + "btrfs_assertfail", "cpu_bringup_and_idle", "cpu_startup_entry", "do_exit",