From mboxrd@z Thu Jan 1 00:00:00 1970 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 kanga.kvack.org (kanga.kvack.org [205.233.56.17]) (using TLSv1 with cipher DHE-RSA-AES256-SHA (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id 8AC06C55184 for ; Wed, 5 Aug 2026 02:16:20 +0000 (UTC) Received: by kanga.kvack.org (Postfix) id 194C16B008A; Tue, 4 Aug 2026 22:16:19 -0400 (EDT) Received: by kanga.kvack.org (Postfix, from userid 40) id 145FE6B0092; Tue, 4 Aug 2026 22:16:19 -0400 (EDT) X-Delivered-To: int-list-linux-mm@kvack.org Received: by kanga.kvack.org (Postfix, from userid 63042) id 05D896B0093; Tue, 4 Aug 2026 22:16:19 -0400 (EDT) X-Delivered-To: linux-mm@kvack.org Received: from relay.hostedemail.com (smtprelay0012.hostedemail.com [216.40.44.12]) by kanga.kvack.org (Postfix) with ESMTP id CDE036B008A for ; Tue, 4 Aug 2026 22:16:18 -0400 (EDT) Received: from smtpin14.hostedemail.com (lb01a-stub [10.200.18.249]) by unirelay03.hostedemail.com (Postfix) with ESMTP id 49C92A037C for ; Wed, 5 Aug 2026 02:16:18 +0000 (UTC) X-FDA: 85065601236.14.27904C3 Received: from out-174.mta0.migadu.com (out-174.mta0.migadu.com [91.218.175.174]) by imf05.hostedemail.com (Postfix) with ESMTP id 6FD1B100007 for ; Wed, 5 Aug 2026 02:16:16 +0000 (UTC) Authentication-Results: imf05.hostedemail.com; dkim=pass header.d=linux.dev header.s=key1 header.b=NJi1XOp4; spf=pass (imf05.hostedemail.com: domain of ye.liu@linux.dev designates 91.218.175.174 as permitted sender) smtp.mailfrom=ye.liu@linux.dev; dmarc=pass (policy=none) header.from=linux.dev ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=hostedemail.com; s=arc-20220608; t=1785896176; h=from:from:sender:reply-to:subject:subject:date:date: message-id:message-id:to:to:cc:cc:mime-version:mime-version: content-type:content-transfer-encoding:content-transfer-encoding: in-reply-to:references:dkim-signature; bh=8poeoDZkGdDv1roqY9qI4+IwjPDa5UcGb8SnGgss8Eo=; b=e8p0pUjC9rcWIfGdyZc1HkVRUptPKMOayJJw+74MMYVtQId3VKMdnap0BV/ZEap5UqR6kH oPzV8zcziZMUXAurgQoKoJOBrJfGjzJ2jxhHy4KoQTyBHTXWS6KulZqt4zRGmvpyoUiavJ sdGVWvb7awowbI51TyS2VghDMwavkrQ= ARC-Seal: i=1; a=rsa-sha256; d=hostedemail.com; s=arc-20220608; cv=none; t=1785896176; b=viXH9w/+GI3MpMwoAsL4Sa9xAkZW8XBWK6pZBmHZk6qJuUbJlB4L4T1bAiT5G3b1Wzb2gu z77XEmtrCOGDZHvY1uGb/VIy/Lrxx9Pu9i7ojrdofBXpPiCqE07vy2zo7oNPTPUTx5mSeY a7qokC2wA03u9aZ4XO6ip08EPSktEl8= ARC-Authentication-Results: i=1; imf05.hostedemail.com; dkim=pass header.d=linux.dev header.s=key1 header.b=NJi1XOp4; spf=pass (imf05.hostedemail.com: domain of ye.liu@linux.dev designates 91.218.175.174 as permitted sender) smtp.mailfrom=ye.liu@linux.dev; dmarc=pass (policy=none) header.from=linux.dev X-Report-Abuse: Please report any abuse attempt to abuse@migadu.com and include these headers. DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linux.dev; s=key1; t=1785896174; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version: content-transfer-encoding:content-transfer-encoding; bh=8poeoDZkGdDv1roqY9qI4+IwjPDa5UcGb8SnGgss8Eo=; b=NJi1XOp4s/Zqe1TxxE/+26J0CV4BkBzHPNeQAp9vL8qRNRi0R5VhnARjfSbD8bdROgDzhw a1yhhH9xUzMC87xxPcAWpXImqZHoxGaAxYJs5RYURpoBLUKKw5vOmOR2sLaTkuJ8QLPQtX SfG+ilSsD3EwiDw87ltvi5hsV7E44CU= From: Ye Liu To: Andrew Morton , Vlastimil Babka Cc: Ye Liu , Suren Baghdasaryan , Michal Hocko , Brendan Jackman , Johannes Weiner , Zi Yan , linux-mm@kvack.org, linux-kernel@vger.kernel.org Subject: [PATCH] mm/show_mem: fix format string inconsistencies and type mismatches Date: Wed, 5 Aug 2026 10:15:55 +0800 Message-Id: <20260805021556.1908807-1-ye.liu@linux.dev> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Migadu-Flow: FLOW_OUT X-Rspamd-Queue-Id: 6FD1B100007 X-Rspamd-Server: rspam10 X-Rspam-User: X-Stat-Signature: ib41d3kaatz4eu8o6xaby65jbgp7r1rb X-HE-Tag: 1785896176-616518 X-HE-Meta: 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 LKzlMGOp WhAztKVbpVGCly4NsEBUMx1p7Y+zv+WZCW51PDwr34c7/U8GqAaXGnmZIBk4vZrxUAEUMgD974mLIyAqUNy2tDRdi4Z+h/9ev9ii/ESsm+q3vs1R4pefyFGI2mHY1Hvy53ZcOKHnAsJHfyhEamrBLXu/COZttljHsHcVmoNbyvVPojWXO2vZtYqf9Cm7dAxy1BqmaNR4jsFcQid6u/CXlx8evjGVX7At6e3t9Uj5OdM/uwquVPLhJ4Fdsaw== Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: List-Subscribe: List-Unsubscribe: From: Ye Liu Fix five format string issues in show_free_areas() and __show_mem(): 1-2. reserved_highatomic and free_highatomic: %luKB -> %lukB The uppercase "KB" is inconsistent with all other fields in the same output block and with /proc/meminfo convention. 3. local_pcp: %ukB -> %lukB with explicit (unsigned long) cast per_cpu_pages.count is int, so K(count) yields int. Using %u was a signed/unsigned mismatch. Cast to unsigned long and use %lu for consistency with all other K() usages in the file. 4. total pagecache pages: %ld -> %lu global_node_page_state() returns unsigned long. Using %ld is a signedness mismatch caught by gcc -Wformat-signedness. 5. hwpoisoned pages: %lu -> %ld atomic_long_read() returns long (signed). Using %lu is a signedness mismatch caught by gcc -Wformat-signedness. Verified with: make KCFLAGS="-Wformat -Wformat-signedness" mm/show_mem.o Signed-off-by: Ye Liu --- mm/show_mem.c | 12 ++++++------ 1 file changed, 6 insertions(+), 6 deletions(-) diff --git a/mm/show_mem.c b/mm/show_mem.c index d1288b4c2b64..b938cbcd774a 100644 --- a/mm/show_mem.c +++ b/mm/show_mem.c @@ -309,8 +309,8 @@ static void show_free_areas(unsigned int filter, const nodemask_t *nodemask, " min:%lukB" " low:%lukB" " high:%lukB" - " reserved_highatomic:%luKB" - " free_highatomic:%luKB" + " reserved_highatomic:%lukB" + " free_highatomic:%lukB" " active_anon:%lukB" " inactive_anon:%lukB" " active_file:%lukB" @@ -323,7 +323,7 @@ static void show_free_areas(unsigned int filter, const nodemask_t *nodemask, " mlocked:%lukB" " bounce:%lukB" " free_pcp:%lukB" - " local_pcp:%ukB" + " local_pcp:%lukB" " free_cma:%lukB" "\n", zone->name, @@ -350,7 +350,7 @@ static void show_free_areas(unsigned int filter, const nodemask_t *nodemask, K(zone_page_state(zone, NR_MLOCK)), 0UL, K(free_pcp), - K(this_cpu_read(zone->per_cpu_pageset->count)), + K((unsigned long)this_cpu_read(zone->per_cpu_pageset->count)), K(zone_page_state(zone, NR_FREE_CMA_PAGES))); printk("lowmem_reserve[]:"); for (i = 0; i < MAX_NR_ZONES; i++) @@ -400,7 +400,7 @@ static void show_free_areas(unsigned int filter, const nodemask_t *nodemask, hugetlb_show_meminfo_node(nid); } - printk("%ld total pagecache pages\n", global_node_page_state(NR_FILE_PAGES)); + printk("%lu total pagecache pages\n", global_node_page_state(NR_FILE_PAGES)); show_swap_cache_info(); } @@ -430,7 +430,7 @@ void __show_mem(unsigned int filter, const nodemask_t *nodemask, printk("%lu pages cma reserved\n", totalcma_pages); #endif #ifdef CONFIG_MEMORY_FAILURE - printk("%lu pages hwpoisoned\n", atomic_long_read(&num_poisoned_pages)); + printk("%ld pages hwpoisoned\n", atomic_long_read(&num_poisoned_pages)); #endif #ifdef CONFIG_MEM_ALLOC_PROFILING static DEFINE_SPINLOCK(mem_alloc_profiling_spinlock); -- 2.25.1