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b=N+BPo4fJW0lH1WBNMYiJ0hH2jemyATsVOoVT0bVK3mgS+shzCNJOwl8DD1Z4N4j5h rowtvOyYMjqTyMUCYX4T7JqjQbJy3F9voh8tmlQeqKGa/apS+UDtNJmo7T5JdFyNoK /I/H4xwDV6ZtGADOkfoop9mpTNLRC5IQMfnhf78Uorjm4Yvt8hZNvyCokeCJ4BynRk azXWwrQXWdeOyo2tc8moU9RO7s+IMTo5O+NFT3y+l14T8XkothYCOBZCU5+2szXZ3E Y9yotlM5XnD3fhpvp+/53ibHDpUypnXAqvRdixhEJVo69ctN7ZYABZWFCRpxsDafU7 eJ0OyKNEIlJJw== Message-ID: <15be272e-a42a-4141-bd57-a8abae435728@kernel.org> Date: Wed, 5 Aug 2026 10:05:36 +0200 MIME-Version: 1.0 User-Agent: Mozilla Thunderbird Subject: Re: [PATCH] mm/show_mem: fix format string inconsistencies and type mismatches Content-Language: en-US To: Ye Liu , Andrew Morton Cc: Ye Liu , Suren Baghdasaryan , Michal Hocko , Brendan Jackman , Johannes Weiner , Zi Yan , linux-mm@kvack.org, linux-kernel@vger.kernel.org References: <20260805021556.1908807-1-ye.liu@linux.dev> From: "Vlastimil Babka (SUSE)" Autocrypt: addr=vbabka@kernel.org; keydata= xsFNBFZdmxYBEADsw/SiUSjB0dM+vSh95UkgcHjzEVBlby/Fg+g42O7LAEkCYXi/vvq31JTB KxRWDHX0R2tgpFDXHnzZcQywawu8eSq0LxzxFNYMvtB7sV1pxYwej2qx9B75qW2plBs+7+YB 87tMFA+u+L4Z5xAzIimfLD5EKC56kJ1CsXlM8S/LHcmdD9Ctkn3trYDNnat0eoAcfPIP2OZ+ 9oe9IF/R28zmh0ifLXyJQQz5ofdj4bPf8ecEW0rhcqHfTD8k4yK0xxt3xW+6Exqp9n9bydiy tcSAw/TahjW6yrA+6JhSBv1v2tIm+itQc073zjSX8OFL51qQVzRFr7H2UQG33lw2QrvHRXqD Ot7ViKam7v0Ho9wEWiQOOZlHItOOXFphWb2yq3nzrKe45oWoSgkxKb97MVsQ+q2SYjJRBBH4 8qKhphADYxkIP6yut/eaj9ImvRUZZRi0DTc8xfnvHGTjKbJzC2xpFcY0DQbZzuwsIZ8OPJCc LM4S7mT25NE5kUTG/TKQCk922vRdGVMoLA7dIQrgXnRXtyT61sg8PG4wcfOnuWf8577aXP1x 6mzw3/jh3F+oSBHb/GcLC7mvWreJifUL2gEdssGfXhGWBo6zLS3qhgtwjay0Jl+kza1lo+Cv BB2T79D4WGdDuVa4eOrQ02TxqGN7G0Biz5ZLRSFzQSQwLn8fbwARAQABzSNWbGFzdGltaWwg QmFia2EgPHZiYWJrYUBrZXJuZWwub3JnPsLBsAQTAQoAWhYhBKlA1DSZLC6OmRA9UCJPp+fM gqZkBQJqFFy6GxSAAAAAAAQADm1hbnUyLDIuNSsxLjEyLDIsMgIbAwUJGtCBUAULCQgHAwUV CgkICwUWAgMBAAIeBQIXgAAKCRAiT6fnzIKmZJIUEADFx/tREzUImHrEwVHeSvDFmA7tJysI UVrlvrM09E7GIuzphzv7jYmo8n3ANpCczLEVr4G0syYQdTigaZgv3+FQDIIzhKih1IHhu1Ei XHlywNWKnQxxQEUNi5Mwx43wQz5XVw9F1A7gtKBKNtfogO511hAbrzagrYajyQacEJ/+sfhZ 9Da8ltHIXD8pcYaHUfQgEusCgmEd9+KrUwrTbckFKmYq5chuE6yJ4J0EmWknL096jIE6CnzF FRslQ3B1UKDjxVsm1ZHfir5NeWszLkTvGFsddFaWTgh8UycESG6VQzKXjjewXu2pG7YQYRpj QKm1W5X2TkwWkXRBZTmfmbhxIUMh3+zf5wQ463rSmDN/8v81tdqBtAW6rH/kzg1GvkaTHXn0 507yEHFzBksk2viAuIxxr7km8+/KARYLIdGtx30EG8cKzAUZOK6WqxtNCsXUJNrVE8CWrCaD icoNu7Fs1c5hmPHdSTnU48ce67449DdnO4neLSNhRiGlMHJgfJUmgrxu/hcYeOZ3haWmEQ2w uW1Mh01OHi8QZHCEyAbABrPs9GUgccc/4eYXX9hIgxfSkYzn8f+8NuIFPWl/0uTvjgqU29FQ SbzOLxHq9439Ox40G5mS5eZXRGxITYR+6TXvRGI6P/264jvflnr/pDGUttaikU+0W+1uxgKH cmYbEc7ATQRbGTU1AQgAn0H6UrFiWcovkh6EXVcl+SeqyO6JHOPm+e9Wu0Vw+VIUvXZVUVVQ La1PQDUi6j00ChlcR66g9/V0sPIcSutacPKfdKYOBvzd4rlhL8rfrdEsQw5ApZxrA8kYZVMh FmBRKAa6wos25moTlMKpCWzTH84+WO5+ziCTsTUZASAToz3RdunTD+vQcHj0GqNTPAHK63sf bAB2I0BslZkXkY1RLb/YhuA6E7JyEd2pilZOrIuBGl/5q2qSakgnAVFWFBR/DO27JuAksYnq +aH8vI0xGvwn75KqSk4UzAkDzWSmO4ZHuahKtQgZNsMYV+PGayRBX9b9zbldzopoLBdqHc4n jQARAQABwsF8BBgBCgAmAhsMFiEEqUDUNJksLo6ZED1QIk+n58yCpmQFAmfIHFQFCRYU6J8A CgkQIk+n58yCpmS2PA//bqN1LfcotmArgElsa+0EGZSQlYgK48pm8WAeTXTngudP9IJ4SuKY HR5RNjHcBeqN+Me0zxRqYzRb8nGanHEkDyf4Im8DQM8d6vbyU+FcPmG4skud4kgS1zMHnlVd SXfSIwKC/hKgdHG8aBV7545Lz9X6Iohea+94wneD0aw/hqF+QWewGZhWJriWAZtvEkzNjQOi 4U9F/trLten/x7bpphDSnDMKJtITbtzATT1Dq7o7VpIUK1nCTQALMuMjKCdi8OdU/+V+R3O4 0PXWvX8qrvqYapVbZ+9KqT74FsuB0Ya9uXwgBF2Q6cRuETZk5vqaqKxzqoQZCO8AOz/58j6O 2RHNy/mZEN+7tJ5Tsq42zVJ4jxsT8b9YplavCMsnBgDeRWhcbYhCyttoL7nYISyWg4kQYZ/P wIV3OuNv2f8iKYsxNsRuClOAF82+gvqOy1/1pprFjy8uo2pkoOrb63aOP3vO5VHnRKgra6dq NcaZ+c6J4H+nEJGi2SkHAUJz5oBzuThvPudLvPA/SK8sKoM01IRxSihev/S/5WLazXB1PGem OCbvzC1IjWJJraxiDJ5IygokapUa2RP7+WBR22skQ3SSl6G107QgWKSyTOGWEaRmV53vxQLV jXuCmzSSasTL60zq5yGrT4/DYQVSNEUiUbG4pYekxJujNeEDkUlky0Y= In-Reply-To: <20260805021556.1908807-1-ye.liu@linux.dev> Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 7bit X-Rspamd-Queue-Id: 656D9C000C X-Rspamd-Server: rspam10 X-Rspam-User: X-Stat-Signature: kthwmeq66bb86ch5rrsk4zs7w85x6i5x X-HE-Tag: 1785917142-135182 X-HE-Meta: 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 3rlAU44v QZvSWoKfxRn+/oaw0h/DUtJC+LezKD+XdEQWZSQ/wCMllegzSun3n8M8/PxMM6PRSp+/u+6ndI9Kkbogdvypr40MVq13UwwHo5rR9imp3RGw3UebNjd6dOGVrsR/K3Vt3sNxwRa+ZGsXqdyr0VKZTFdXh5lklPceZZyQOo5wQibDZruHFCrP8dlH9XjX/ipgAv3XHy98NafTc2sXRA3xiHJfLnKd3Du1JNHDr0CsX9+gd4/wfX5s545NBpeUZAHBjR9p7/wxxwnf8oaW057BSA4evu8XvXk/i259Zxu8cg4S+39kQBTVnq0iLaIz/PdRWRm4qkj1umiayyl0= Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: List-Subscribe: List-Unsubscribe: On 8/5/26 04:15, Ye Liu wrote: > 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 Acked-by: Vlastimil Babka (SUSE) > --- > 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);