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Message-ID: <202601141005.joqBs0CU-lkp@intel.com>
Date: Wed, 14 Jan 2026 10:49:43 +0800
From: kernel test robot <lkp@...el.com>
To: David Howells <dhowells@...hat.com>, netdev@...r.kernel.org
Cc: oe-kbuild-all@...ts.linux.dev, dhowells@...hat.com,
syzbot+6182afad5045e6703b3d@...kaller.appspotmail.com,
Marc Dionne <marc.dionne@...istor.com>,
Eric Dumazet <edumazet@...gle.com>,
Jakub Kicinski <kuba@...nel.org>, Paolo Abeni <pabeni@...hat.com>,
Simon Horman <horms@...nel.org>, linux-afs@...ts.infradead.org,
stable@...nel.org, linux-kernel@...nel.org
Subject: Re: [PATCH] rxrpc: Fix data-race warning and potential load/store
tearing
Hi David,
kernel test robot noticed the following build warnings:
[auto build test WARNING on net/main]
[also build test WARNING on net-next/main linus/master v6.19-rc5 next-20260113]
[cannot apply to horms-ipvs/master]
[If your patch is applied to the wrong git tree, kindly drop us a note.
And when submitting patch, we suggest to use '--base' as documented in
https://git-scm.com/docs/git-format-patch#_base_tree_information]
url: https://github.com/intel-lab-lkp/linux/commits/David-Howells/rxrpc-Fix-data-race-warning-and-potential-load-store-tearing/20260114-005726
base: net/main
patch link: https://lore.kernel.org/r/3535584.1768322992%40warthog.procyon.org.uk
patch subject: [PATCH] rxrpc: Fix data-race warning and potential load/store tearing
config: x86_64-rhel-9.4-ltp (https://download.01.org/0day-ci/archive/20260114/202601141005.joqBs0CU-lkp@intel.com/config)
compiler: gcc-14 (Debian 14.2.0-19) 14.2.0
reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20260114/202601141005.joqBs0CU-lkp@intel.com/reproduce)
If you fix the issue in a separate patch/commit (i.e. not just a new version of
the same patch/commit), kindly add following tags
| Reported-by: kernel test robot <lkp@...el.com>
| Closes: https://lore.kernel.org/oe-kbuild-all/202601141005.joqBs0CU-lkp@intel.com/
All warnings (new ones prefixed by >>):
net/rxrpc/proc.c: In function 'rxrpc_peer_seq_show':
>> net/rxrpc/proc.c:299:61: warning: format '%llu' expects argument of type 'long long unsigned int', but argument 8 has type 'int' [-Wformat=]
299 | "UDP %-47.47s %-47.47s %3u %4u %5u %6llus %8d %8d\n",
| ~~~~^
| |
| long long unsigned int
| %6u
......
305 | (s32)now - (s32)peer->last_tx_at,
| ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
| |
| int
vim +299 net/rxrpc/proc.c
d2ce4a84c21f803 David Howells 2023-10-26 274
bc0e7cf43370a8e David Howells 2018-10-15 275 /*
bc0e7cf43370a8e David Howells 2018-10-15 276 * generate a list of extant virtual peers in /proc/net/rxrpc/peers
bc0e7cf43370a8e David Howells 2018-10-15 277 */
bc0e7cf43370a8e David Howells 2018-10-15 278 static int rxrpc_peer_seq_show(struct seq_file *seq, void *v)
bc0e7cf43370a8e David Howells 2018-10-15 279 {
bc0e7cf43370a8e David Howells 2018-10-15 280 struct rxrpc_peer *peer;
bc0e7cf43370a8e David Howells 2018-10-15 281 time64_t now;
bc0e7cf43370a8e David Howells 2018-10-15 282 char lbuff[50], rbuff[50];
bc0e7cf43370a8e David Howells 2018-10-15 283
bc0e7cf43370a8e David Howells 2018-10-15 284 if (v == SEQ_START_TOKEN) {
bc0e7cf43370a8e David Howells 2018-10-15 285 seq_puts(seq,
eeaedc5449d9fcc David Howells 2024-12-04 286 "Proto Local Remote Use SST Maxd LastUse RTT RTO\n"
bc0e7cf43370a8e David Howells 2018-10-15 287 );
bc0e7cf43370a8e David Howells 2018-10-15 288 return 0;
bc0e7cf43370a8e David Howells 2018-10-15 289 }
bc0e7cf43370a8e David Howells 2018-10-15 290
bc0e7cf43370a8e David Howells 2018-10-15 291 peer = list_entry(v, struct rxrpc_peer, hash_link);
bc0e7cf43370a8e David Howells 2018-10-15 292
bc0e7cf43370a8e David Howells 2018-10-15 293 sprintf(lbuff, "%pISpc", &peer->local->srx.transport);
bc0e7cf43370a8e David Howells 2018-10-15 294
bc0e7cf43370a8e David Howells 2018-10-15 295 sprintf(rbuff, "%pISpc", &peer->srx.transport);
bc0e7cf43370a8e David Howells 2018-10-15 296
bc0e7cf43370a8e David Howells 2018-10-15 297 now = ktime_get_seconds();
bc0e7cf43370a8e David Howells 2018-10-15 298 seq_printf(seq,
b40ef2b85a7d117 David Howells 2024-12-04 @299 "UDP %-47.47s %-47.47s %3u %4u %5u %6llus %8d %8d\n",
bc0e7cf43370a8e David Howells 2018-10-15 300 lbuff,
bc0e7cf43370a8e David Howells 2018-10-15 301 rbuff,
a05754295e01f00 David Howells 2022-05-21 302 refcount_read(&peer->ref),
1fc4fa2ac93dcf3 David Howells 2022-10-03 303 peer->cong_ssthresh,
eeaedc5449d9fcc David Howells 2024-12-04 304 peer->max_data,
db6f1fa7f67e415 David Howells 2026-01-13 305 (s32)now - (s32)peer->last_tx_at,
b40ef2b85a7d117 David Howells 2024-12-04 306 READ_ONCE(peer->recent_srtt_us),
b40ef2b85a7d117 David Howells 2024-12-04 307 READ_ONCE(peer->recent_rto_us));
bc0e7cf43370a8e David Howells 2018-10-15 308
bc0e7cf43370a8e David Howells 2018-10-15 309 return 0;
bc0e7cf43370a8e David Howells 2018-10-15 310 }
bc0e7cf43370a8e David Howells 2018-10-15 311
--
0-DAY CI Kernel Test Service
https://github.com/intel/lkp-tests/wiki
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