From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-1.web.codeaurora.org [10.30.226.201]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 97197611A for ; Sun, 28 May 2023 19:17:49 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id 24FDBC433D2; Sun, 28 May 2023 19:17:48 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linuxfoundation.org; s=korg; t=1685301469; bh=aFLz+7G0jLW1WAes9iKwfH6HvfuhdFOyVs6Cc1Uhf/k=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=w1HFXT0s4VxUyll2+AlMgHeQvzcSHNBnefnBckqOq1TPqwnkDBEW4eeyQ00x1neYP okGfbeijMJZZ+yJWiIQpmwXdxXGtkuv0YOikFCPmCS5jDj2WEyc3z7/fM5ZvSxl/oz 9tRi1FGka6AtGTdHi47l38fDxlEXk3yR+QVryFTY= From: Greg Kroah-Hartman To: stable@vger.kernel.org Cc: Greg Kroah-Hartman , patches@lists.linux.dev, Josh Poimboeuf , "Peter Zijlstra (Intel)" , Sasha Levin Subject: [PATCH 4.19 041/132] sched: Fix KCSAN noinstr violation Date: Sun, 28 May 2023 20:09:40 +0100 Message-Id: <20230528190834.842738049@linuxfoundation.org> X-Mailer: git-send-email 2.40.1 In-Reply-To: <20230528190833.565872088@linuxfoundation.org> References: <20230528190833.565872088@linuxfoundation.org> User-Agent: quilt/0.67 Precedence: bulk X-Mailing-List: patches@lists.linux.dev List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit From: Josh Poimboeuf [ Upstream commit e0b081d17a9f4e5c0cbb0e5fbeb1abe3de0f7e4e ] With KCSAN enabled, end_of_stack() can get out-of-lined. Force it inline. Fixes the following warnings: vmlinux.o: warning: objtool: check_stackleak_irqoff+0x2b: call to end_of_stack() leaves .noinstr.text section Signed-off-by: Josh Poimboeuf Signed-off-by: Peter Zijlstra (Intel) Link: https://lore.kernel.org/r/cc1b4d73d3a428a00d206242a68fdf99a934ca7b.1681320026.git.jpoimboe@kernel.org Signed-off-by: Sasha Levin --- include/linux/sched/task_stack.h | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/include/linux/sched/task_stack.h b/include/linux/sched/task_stack.h index 4f099d3fed3a9..f1063380e6d8a 100644 --- a/include/linux/sched/task_stack.h +++ b/include/linux/sched/task_stack.h @@ -23,7 +23,7 @@ static inline void *task_stack_page(const struct task_struct *task) #define setup_thread_stack(new,old) do { } while(0) -static inline unsigned long *end_of_stack(const struct task_struct *task) +static __always_inline unsigned long *end_of_stack(const struct task_struct *task) { #ifdef CONFIG_STACK_GROWSUP return (unsigned long *)((unsigned long)task->stack + THREAD_SIZE) - 1; -- 2.39.2