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 5D0011EE00B; Tue, 3 Dec 2024 16:16:36 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=10.30.226.201 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1733242596; cv=none; b=nOcNoyZyCXBDLndgJ/beeUWprA6mVsDFy/2xWHidLMY84vRlzQ1E09Wtc2gi2GHuXdM1NP+rhIKzuKeqxFWIDOEw20+MzZ0AocR4Pf2gSkLUY3DfYGBt4T8hupqWZt2woPD0vzwEZ0duE9MnNv5bnuOyk77uguJf61HTHzfGApU= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1733242596; c=relaxed/simple; bh=bG1V41FfurKv5KBJFAv0n5C23FZead8JHZ4Yz+5UlDs=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=TYJUDb1dQPa0tXEewRme4KKH7fv+sc6RvT1vNb0EajGusdG0L676qJ3RUqhXJsigvPXWUjK+nNOmmYmbhkKF2x02QKHwc4fbdwwIYSCgI7VW8o8dX0OnIUxuZHkDllubnC/lvpshNLY3TawrMmHxlJq7GEfmcPxNlJrsZxoUfcA= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linuxfoundation.org header.i=@linuxfoundation.org header.b=U+sKPaA7; arc=none smtp.client-ip=10.30.226.201 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linuxfoundation.org header.i=@linuxfoundation.org header.b="U+sKPaA7" Received: by smtp.kernel.org (Postfix) with ESMTPSA id CA176C4CECF; Tue, 3 Dec 2024 16:16:35 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linuxfoundation.org; s=korg; t=1733242596; bh=bG1V41FfurKv5KBJFAv0n5C23FZead8JHZ4Yz+5UlDs=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=U+sKPaA7sBljCGTrcoljd3EgB0Os2tkJ+y+mMYnu0aUcoZAWIjNHjaOT8Bw/esMSk PiAqF8wSdBDV6OOVI5FggADF0mMb6/6Af5UyRkPsAQ+o3rYVqnGZ3JBnmbdz3K5Cqi Zyj20lmcYIC8grmSYKI2/s1+3aRJoqSBXdlVkbhg= From: Greg Kroah-Hartman To: stable@vger.kernel.org Cc: Greg Kroah-Hartman , patches@lists.linux.dev, Huacai Chen , John Paul Adrian Glaubitz Subject: [PATCH 6.12 720/826] sh: cpuinfo: Fix a warning for CONFIG_CPUMASK_OFFSTACK Date: Tue, 3 Dec 2024 15:47:27 +0100 Message-ID: <20241203144811.848774567@linuxfoundation.org> X-Mailer: git-send-email 2.47.1 In-Reply-To: <20241203144743.428732212@linuxfoundation.org> References: <20241203144743.428732212@linuxfoundation.org> User-Agent: quilt/0.67 X-stable: review X-Patchwork-Hint: ignore Precedence: bulk X-Mailing-List: stable@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit 6.12-stable review patch. If anyone has any objections, please let me know. ------------------ From: Huacai Chen commit 3c891f7c6a4e90bb1199497552f24b26e46383bc upstream. When CONFIG_CPUMASK_OFFSTACK and CONFIG_DEBUG_PER_CPU_MAPS are selected, cpu_max_bits_warn() generates a runtime warning similar as below when showing /proc/cpuinfo. Fix this by using nr_cpu_ids (the runtime limit) instead of NR_CPUS to iterate CPUs. [ 3.052463] ------------[ cut here ]------------ [ 3.059679] WARNING: CPU: 3 PID: 1 at include/linux/cpumask.h:108 show_cpuinfo+0x5e8/0x5f0 [ 3.070072] Modules linked in: efivarfs autofs4 [ 3.076257] CPU: 0 PID: 1 Comm: systemd Not tainted 5.19-rc5+ #1052 [ 3.099465] Stack : 9000000100157b08 9000000000f18530 9000000000cf846c 9000000100154000 [ 3.109127] 9000000100157a50 0000000000000000 9000000100157a58 9000000000ef7430 [ 3.118774] 90000001001578e8 0000000000000040 0000000000000020 ffffffffffffffff [ 3.128412] 0000000000aaaaaa 1ab25f00eec96a37 900000010021de80 900000000101c890 [ 3.138056] 0000000000000000 0000000000000000 0000000000000000 0000000000aaaaaa [ 3.147711] ffff8000339dc220 0000000000000001 0000000006ab4000 0000000000000000 [ 3.157364] 900000000101c998 0000000000000004 9000000000ef7430 0000000000000000 [ 3.167012] 0000000000000009 000000000000006c 0000000000000000 0000000000000000 [ 3.176641] 9000000000d3de08 9000000001639390 90000000002086d8 00007ffff0080286 [ 3.186260] 00000000000000b0 0000000000000004 0000000000000000 0000000000071c1c [ 3.195868] ... [ 3.199917] Call Trace: [ 3.203941] [<90000000002086d8>] show_stack+0x38/0x14c [ 3.210666] [<9000000000cf846c>] dump_stack_lvl+0x60/0x88 [ 3.217625] [<900000000023d268>] __warn+0xd0/0x100 [ 3.223958] [<9000000000cf3c90>] warn_slowpath_fmt+0x7c/0xcc [ 3.231150] [<9000000000210220>] show_cpuinfo+0x5e8/0x5f0 [ 3.238080] [<90000000004f578c>] seq_read_iter+0x354/0x4b4 [ 3.245098] [<90000000004c2e90>] new_sync_read+0x17c/0x1c4 [ 3.252114] [<90000000004c5174>] vfs_read+0x138/0x1d0 [ 3.258694] [<90000000004c55f8>] ksys_read+0x70/0x100 [ 3.265265] [<9000000000cfde9c>] do_syscall+0x7c/0x94 [ 3.271820] [<9000000000202fe4>] handle_syscall+0xc4/0x160 [ 3.281824] ---[ end trace 8b484262b4b8c24c ]--- Cc: stable@vger.kernel.org Signed-off-by: Huacai Chen Reviewed-by: John Paul Adrian Glaubitz Tested-by: John Paul Adrian Glaubitz Signed-off-by: John Paul Adrian Glaubitz Signed-off-by: Greg Kroah-Hartman --- arch/sh/kernel/cpu/proc.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) --- a/arch/sh/kernel/cpu/proc.c +++ b/arch/sh/kernel/cpu/proc.c @@ -132,7 +132,7 @@ static int show_cpuinfo(struct seq_file static void *c_start(struct seq_file *m, loff_t *pos) { - return *pos < NR_CPUS ? cpu_data + *pos : NULL; + return *pos < nr_cpu_ids ? cpu_data + *pos : NULL; } static void *c_next(struct seq_file *m, void *v, loff_t *pos) {