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X-CSE-ConnectionGUID: Ri6sJsvzRl+VVvaOw2iEGA== X-CSE-MsgGUID: ekNXImWmRJqaprargFxcfg== X-IronPort-AV: E=McAfee;i="6800,10657,11503"; a="55997861" X-IronPort-AV: E=Sophos;i="6.16,339,1744095600"; d="scan'208";a="55997861" Received: from orviesa002.jf.intel.com ([10.64.159.142]) by fmvoesa109.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 26 Jul 2025 04:21:39 -0700 X-CSE-ConnectionGUID: 8zotRv7YQvKXCdlELy7OUA== X-CSE-MsgGUID: 0XG+XZTXR+uiUAgNJ2gZrw== X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="6.16,339,1744095600"; d="scan'208";a="192450002" Received: from lkp-server01.sh.intel.com (HELO 9ee84586c615) ([10.239.97.150]) by orviesa002.jf.intel.com with ESMTP; 26 Jul 2025 04:21:33 -0700 Received: from kbuild by 9ee84586c615 with local (Exim 4.96) (envelope-from ) id 1ufcy2-000Lvd-0T; Sat, 26 Jul 2025 11:21:30 +0000 Date: Sat, 26 Jul 2025 19:20:41 +0800 From: kernel test robot To: Bhupesh , akpm@linux-foundation.org Cc: oe-kbuild-all@lists.linux.dev, bhupesh@igalia.com, kernel-dev@igalia.com, linux-kernel@vger.kernel.org, bpf@vger.kernel.org, linux-perf-users@vger.kernel.org, linux-fsdevel@vger.kernel.org, linux-mm@kvack.org, oliver.sang@intel.com, lkp@intel.com, laoar.shao@gmail.com, pmladek@suse.com, rostedt@goodmis.org, mathieu.desnoyers@efficios.com, arnaldo.melo@gmail.com, alexei.starovoitov@gmail.com, andrii.nakryiko@gmail.com, mirq-linux@rere.qmqm.pl, peterz@infradead.org, willy@infradead.org, david@redhat.com, viro@zeniv.linux.org.uk, keescook@chromium.org, ebiederm@xmission.com, brauner@kernel.org, jack@suse.cz, mingo@redhat.com, juri.lelli@redhat.com, bsegall@google.com, mgorman@suse.de Subject: Re: [PATCH v6 3/3] include: Set tsk->comm length to 64 bytes Message-ID: <202507261841.Z2C9RmTJ-lkp@intel.com> References: <20250724123612.206110-4-bhupesh@igalia.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20250724123612.206110-4-bhupesh@igalia.com> X-Rspamd-Server: rspam12 X-Rspamd-Queue-Id: E0EFF4000B X-Stat-Signature: qpxzuxq6wor5z7c1c9pygfk8kokp7qgk X-Rspam-User: X-HE-Tag: 1753528900-153605 X-HE-Meta: U2FsdGVkX1/Z56tlV5gKozVbE1epbjBz4NoWcclTdf/bmJ9wWU5k9sKGva1IswW9FDzhFUNsy7T9N6k1TxvOFxGZAatcrcmlqCfJrExNZMa1QbrTJj9w3Hu0j3Ocl12Di2/+UAZ0qL/rTsq+HQ4EWApNDzFePnZpDBkImJil5ttwJGfO0E9MtN2ErtJeDBkzM9JVz62ZR7KEY+1KRp2k7Men8tVUz8AS1S3FR6AVCfOI5nI+F83fhl/iwt0MYE6UKW+i/2+lp0+M8/hO+phA8SvMku8VPbAf8k8neF0BgkVbF/vdEhKCg+hJaGjKzfKv3eoWQml2NlWe/Wk6UH7nHgB1avf2KxDm6PIXCotzd2DK3E8JmNDv9OxPMJFGuEw58bnnGHI8EifEFpjLG9rnt5mGaFdr/L4q4OWJg7HAevmhL4AKPQKjIj4imSa8h49h4zjj8CswupDjw7b8j29FNGH5W1K8likSYWhRgb/emsxcIdN86gJ9hZ6iGhtv7V/LBpfvY6yw34A5htqpyzyj3E4UJvmmO/TwTZ7y8g0r7uIIPFSRIv9UlqAvqseRk+KxarmfpGvyXOwNckfu/qHtx3Acq310k54oxgQdvrFK+R8uEOxHbYX0EXsDhYkQFpjw0n7aeSBrhoQIUhEnEHcpIzw+xK9OxUlDoV25PkhoNPTX74RLLmtYq/1Q66AQTxo2gpElpqnRztPdyBmU3fz07R5PzD4lSC+JaGEMLuGb7vMY4YyJLt+cRvmwE/K+Chkt9Cu6kNB5WhzQYXXt6BbVFjlbEaP4JU/8amA432AQOxeXnhJe6Qw8mbZEC1QHJYDxamXh16vZ4sNYU7MVtx2hHansDK/JMSYOouvSTHo9ZzvF7SW8Msrevs0jOqMeYsZR+QUUXcXKavUbqSFVglDKIpUJ9y+Sjnp85nNddI/US3OWZ2w7VWlYbxGCYedjJunTIStww+OPzhbjExFiS7u FQkRc/lO 8/CWlSYwzfx7YCX8l/teXP3Y33g84C+vD0ynef8Ewl8W1eIHdMUvVfdOOQuIeDb3rH0Ica9emsfBmlk0lbxglgJaG8qmXBl/vHSkJcEPTyTBIZEPOIUQj2kFFDq/4LCLK0/Ra+0ULFAoi3UXeQmV6yii1yRu32P3ngHoeWEpBwZLBvE2aMk+61HKLyVgcUQBj/y+TgHfI415WOSiasdCjjeKyIay8cHwSmCByn9U0wmNPFFaRUUp7S3VXRC0TBnNzVRtPeHvYkJDobi35F0p1CgctlU7FqsjXTO47NWX5Zh60MncXhMRP1IljnT1K84YefzHoNEs5lLgi+jy+nxrSn3FU435LUcvLuzjDjvGdID6Wsc+TDWOK/VWlIeIIv2bJ95l0He+b9Mxl3FzmoLWMKf0aZVDaticJesZux4YT8a9DGg72lBz0qwfqbZ3ySdAK7WsVBXGE6Q4wRn8vYznJeHEnjWCBjR10dVAPJce3XR42Ol0= X-Bogosity: Ham, tests=bogofilter, spamicity=0.000000, version=1.2.4 Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: List-Subscribe: List-Unsubscribe: Hi Bhupesh, kernel test robot noticed the following build warnings: [auto build test WARNING on trace/for-next] [also build test WARNING on tip/sched/core akpm-mm/mm-everything linus/master v6.16-rc7 next-20250725] [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/Bhupesh/exec-Remove-obsolete-comments/20250724-203927 base: https://git.kernel.org/pub/scm/linux/kernel/git/trace/linux-trace for-next patch link: https://lore.kernel.org/r/20250724123612.206110-4-bhupesh%40igalia.com patch subject: [PATCH v6 3/3] include: Set tsk->comm length to 64 bytes config: sparc64-randconfig-001-20250725 (https://download.01.org/0day-ci/archive/20250726/202507261841.Z2C9RmTJ-lkp@intel.com/config) compiler: sparc64-linux-gcc (GCC) 8.5.0 reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20250726/202507261841.Z2C9RmTJ-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 | Closes: https://lore.kernel.org/oe-kbuild-all/202507261841.Z2C9RmTJ-lkp@intel.com/ All warnings (new ones prefixed by >>): drivers/gpu/drm/nouveau/nouveau_chan.c: In function 'nouveau_channel_ctor': >> drivers/gpu/drm/nouveau/nouveau_chan.c:336:51: warning: '%s' directive output may be truncated writing up to 63 bytes into a region of size 32 [-Wformat-truncation=] snprintf(args->name, __member_size(args->name), "%s[%d]", ^~ drivers/gpu/drm/nouveau/nouveau_chan.c:336:2: note: 'snprintf' output between 4 and 77 bytes into a destination of size 32 snprintf(args->name, __member_size(args->name), "%s[%d]", ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ current->comm, task_pid_nr(current)); ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ -- drivers/gpu/drm/nouveau/nouveau_drm.c: In function 'nouveau_drm_open': >> drivers/gpu/drm/nouveau/nouveau_drm.c:1202:32: warning: '%s' directive output may be truncated writing up to 63 bytes into a region of size 32 [-Wformat-truncation=] snprintf(name, sizeof(name), "%s[%d]", ^~ drivers/gpu/drm/nouveau/nouveau_drm.c:1202:2: note: 'snprintf' output between 4 and 77 bytes into a destination of size 32 snprintf(name, sizeof(name), "%s[%d]", ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ current->comm, pid_nr(rcu_dereference(fpriv->pid))); ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ vim +336 drivers/gpu/drm/nouveau/nouveau_chan.c ebb945a94bba2c Ben Skeggs 2012-07-20 246 5b8a43aeb9cbf6 Marcin Slusarz 2012-08-19 247 static int 5cca41ac70e587 Ben Skeggs 2024-07-26 248 nouveau_channel_ctor(struct nouveau_cli *cli, bool priv, u64 runm, 06db7fded6dec8 Ben Skeggs 2022-06-01 249 struct nouveau_channel **pchan) ebb945a94bba2c Ben Skeggs 2012-07-20 250 { 152be54224de18 Danilo Krummrich 2023-10-02 251 const struct nvif_mclass hosts[] = { 284ad706ad2f50 Ben Skeggs 2025-02-04 252 { BLACKWELL_CHANNEL_GPFIFO_B, 0 }, 32cb1cc358ffed Ben Skeggs 2024-11-25 253 { BLACKWELL_CHANNEL_GPFIFO_A, 0 }, 44f93b209e2afd Ben Skeggs 2024-11-25 254 { HOPPER_CHANNEL_GPFIFO_A, 0 }, 06db7fded6dec8 Ben Skeggs 2022-06-01 255 { AMPERE_CHANNEL_GPFIFO_B, 0 }, 7f4f35ea5b080e Ben Skeggs 2022-06-01 256 { AMPERE_CHANNEL_GPFIFO_A, 0 }, 06db7fded6dec8 Ben Skeggs 2022-06-01 257 { TURING_CHANNEL_GPFIFO_A, 0 }, 06db7fded6dec8 Ben Skeggs 2022-06-01 258 { VOLTA_CHANNEL_GPFIFO_A, 0 }, 06db7fded6dec8 Ben Skeggs 2022-06-01 259 { PASCAL_CHANNEL_GPFIFO_A, 0 }, 06db7fded6dec8 Ben Skeggs 2022-06-01 260 { MAXWELL_CHANNEL_GPFIFO_A, 0 }, 06db7fded6dec8 Ben Skeggs 2022-06-01 261 { KEPLER_CHANNEL_GPFIFO_B, 0 }, 06db7fded6dec8 Ben Skeggs 2022-06-01 262 { KEPLER_CHANNEL_GPFIFO_A, 0 }, 06db7fded6dec8 Ben Skeggs 2022-06-01 263 { FERMI_CHANNEL_GPFIFO , 0 }, 06db7fded6dec8 Ben Skeggs 2022-06-01 264 { G82_CHANNEL_GPFIFO , 0 }, 06db7fded6dec8 Ben Skeggs 2022-06-01 265 { NV50_CHANNEL_GPFIFO , 0 }, 06db7fded6dec8 Ben Skeggs 2022-06-01 266 { NV40_CHANNEL_DMA , 0 }, 06db7fded6dec8 Ben Skeggs 2022-06-01 267 { NV17_CHANNEL_DMA , 0 }, 06db7fded6dec8 Ben Skeggs 2022-06-01 268 { NV10_CHANNEL_DMA , 0 }, 06db7fded6dec8 Ben Skeggs 2022-06-01 269 { NV03_CHANNEL_DMA , 0 }, 06db7fded6dec8 Ben Skeggs 2022-06-01 270 {} 06db7fded6dec8 Ben Skeggs 2022-06-01 271 }; e270b3665f8321 Gustavo A. R. Silva 2025-04-16 272 DEFINE_RAW_FLEX(struct nvif_chan_v0, args, name, TASK_COMM_LEN + 16); 5cca41ac70e587 Ben Skeggs 2024-07-26 273 struct nvif_device *device = &cli->device; ebb945a94bba2c Ben Skeggs 2012-07-20 274 struct nouveau_channel *chan; 06db7fded6dec8 Ben Skeggs 2022-06-01 275 const u64 plength = 0x10000; 06db7fded6dec8 Ben Skeggs 2022-06-01 276 const u64 ioffset = plength; 06db7fded6dec8 Ben Skeggs 2022-06-01 277 const u64 ilength = 0x02000; 06db7fded6dec8 Ben Skeggs 2022-06-01 278 int cid, ret; 06db7fded6dec8 Ben Skeggs 2022-06-01 279 u64 size; 06db7fded6dec8 Ben Skeggs 2022-06-01 280 06db7fded6dec8 Ben Skeggs 2022-06-01 281 cid = nvif_mclass(&device->object, hosts); 06db7fded6dec8 Ben Skeggs 2022-06-01 282 if (cid < 0) 06db7fded6dec8 Ben Skeggs 2022-06-01 283 return cid; 06db7fded6dec8 Ben Skeggs 2022-06-01 284 06db7fded6dec8 Ben Skeggs 2022-06-01 285 if (hosts[cid].oclass < NV50_CHANNEL_GPFIFO) 06db7fded6dec8 Ben Skeggs 2022-06-01 286 size = plength; 06db7fded6dec8 Ben Skeggs 2022-06-01 287 else 06db7fded6dec8 Ben Skeggs 2022-06-01 288 size = ioffset + ilength; ebb945a94bba2c Ben Skeggs 2012-07-20 289 ebb945a94bba2c Ben Skeggs 2012-07-20 290 /* allocate dma push buffer */ 5cca41ac70e587 Ben Skeggs 2024-07-26 291 ret = nouveau_channel_prep(cli, size, &chan); ebb945a94bba2c Ben Skeggs 2012-07-20 292 *pchan = chan; ebb945a94bba2c Ben Skeggs 2012-07-20 293 if (ret) ebb945a94bba2c Ben Skeggs 2012-07-20 294 return ret; ebb945a94bba2c Ben Skeggs 2012-07-20 295 ebb945a94bba2c Ben Skeggs 2012-07-20 296 /* create channel object */ e270b3665f8321 Gustavo A. R. Silva 2025-04-16 297 args->version = 0; e270b3665f8321 Gustavo A. R. Silva 2025-04-16 298 args->namelen = __member_size(args->name); e270b3665f8321 Gustavo A. R. Silva 2025-04-16 299 args->runlist = __ffs64(runm); e270b3665f8321 Gustavo A. R. Silva 2025-04-16 300 args->runq = 0; e270b3665f8321 Gustavo A. R. Silva 2025-04-16 301 args->priv = priv; e270b3665f8321 Gustavo A. R. Silva 2025-04-16 302 args->devm = BIT(0); 06db7fded6dec8 Ben Skeggs 2022-06-01 303 if (hosts[cid].oclass < NV50_CHANNEL_GPFIFO) { e270b3665f8321 Gustavo A. R. Silva 2025-04-16 304 args->vmm = 0; e270b3665f8321 Gustavo A. R. Silva 2025-04-16 305 args->ctxdma = nvif_handle(&chan->push.ctxdma); e270b3665f8321 Gustavo A. R. Silva 2025-04-16 306 args->offset = chan->push.addr; e270b3665f8321 Gustavo A. R. Silva 2025-04-16 307 args->length = 0; bbf8906b2cad17 Ben Skeggs 2014-08-10 308 } else { e270b3665f8321 Gustavo A. R. Silva 2025-04-16 309 args->vmm = nvif_handle(&chan->vmm->vmm.object); 06db7fded6dec8 Ben Skeggs 2022-06-01 310 if (hosts[cid].oclass < FERMI_CHANNEL_GPFIFO) e270b3665f8321 Gustavo A. R. Silva 2025-04-16 311 args->ctxdma = nvif_handle(&chan->push.ctxdma); 06db7fded6dec8 Ben Skeggs 2022-06-01 312 else e270b3665f8321 Gustavo A. R. Silva 2025-04-16 313 args->ctxdma = 0; e270b3665f8321 Gustavo A. R. Silva 2025-04-16 314 args->offset = ioffset + chan->push.addr; e270b3665f8321 Gustavo A. R. Silva 2025-04-16 315 args->length = ilength; 06db7fded6dec8 Ben Skeggs 2022-06-01 316 } e270b3665f8321 Gustavo A. R. Silva 2025-04-16 317 args->huserd = 0; e270b3665f8321 Gustavo A. R. Silva 2025-04-16 318 args->ouserd = 0; 06db7fded6dec8 Ben Skeggs 2022-06-01 319 06db7fded6dec8 Ben Skeggs 2022-06-01 320 /* allocate userd */ 06db7fded6dec8 Ben Skeggs 2022-06-01 321 if (hosts[cid].oclass >= VOLTA_CHANNEL_GPFIFO_A) { 06db7fded6dec8 Ben Skeggs 2022-06-01 322 ret = nvif_mem_ctor(&cli->mmu, "abi16ChanUSERD", NVIF_CLASS_MEM_GF100, 06db7fded6dec8 Ben Skeggs 2022-06-01 323 NVIF_MEM_VRAM | NVIF_MEM_COHERENT | NVIF_MEM_MAPPABLE, 06db7fded6dec8 Ben Skeggs 2022-06-01 324 0, PAGE_SIZE, NULL, 0, &chan->mem_userd); 06db7fded6dec8 Ben Skeggs 2022-06-01 325 if (ret) ebb945a94bba2c Ben Skeggs 2012-07-20 326 return ret; ebb945a94bba2c Ben Skeggs 2012-07-20 327 e270b3665f8321 Gustavo A. R. Silva 2025-04-16 328 args->huserd = nvif_handle(&chan->mem_userd.object); e270b3665f8321 Gustavo A. R. Silva 2025-04-16 329 args->ouserd = 0; ebb945a94bba2c Ben Skeggs 2012-07-20 330 06db7fded6dec8 Ben Skeggs 2022-06-01 331 chan->userd = &chan->mem_userd.object; 06db7fded6dec8 Ben Skeggs 2022-06-01 332 } else { 06db7fded6dec8 Ben Skeggs 2022-06-01 333 chan->userd = &chan->user; 06db7fded6dec8 Ben Skeggs 2022-06-01 334 } ebb945a94bba2c Ben Skeggs 2012-07-20 335 e270b3665f8321 Gustavo A. R. Silva 2025-04-16 @336 snprintf(args->name, __member_size(args->name), "%s[%d]", e270b3665f8321 Gustavo A. R. Silva 2025-04-16 337 current->comm, task_pid_nr(current)); ebb945a94bba2c Ben Skeggs 2012-07-20 338 06db7fded6dec8 Ben Skeggs 2022-06-01 339 ret = nvif_object_ctor(&device->object, "abi16ChanUser", 0, hosts[cid].oclass, e270b3665f8321 Gustavo A. R. Silva 2025-04-16 340 args, __struct_size(args), &chan->user); 06db7fded6dec8 Ben Skeggs 2022-06-01 341 if (ret) { 06db7fded6dec8 Ben Skeggs 2022-06-01 342 nouveau_channel_del(pchan); ebb945a94bba2c Ben Skeggs 2012-07-20 343 return ret; bbf8906b2cad17 Ben Skeggs 2014-08-10 344 } ebb945a94bba2c Ben Skeggs 2012-07-20 345 e270b3665f8321 Gustavo A. R. Silva 2025-04-16 346 chan->runlist = args->runlist; e270b3665f8321 Gustavo A. R. Silva 2025-04-16 347 chan->chid = args->chid; e270b3665f8321 Gustavo A. R. Silva 2025-04-16 348 chan->inst = args->inst; e270b3665f8321 Gustavo A. R. Silva 2025-04-16 349 chan->token = args->token; 06db7fded6dec8 Ben Skeggs 2022-06-01 350 return 0; ebb945a94bba2c Ben Skeggs 2012-07-20 351 } ebb945a94bba2c Ben Skeggs 2012-07-20 352 -- 0-DAY CI Kernel Test Service https://github.com/intel/lkp-tests/wiki