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X-CSE-ConnectionGUID: 9J4uk7waSUWbrp8/OuRjNg== X-CSE-MsgGUID: Bv6Gp3XVSiGlLu0Pm8REhg== X-IronPort-AV: E=McAfee;i="6800,10657,11824"; a="70361588" X-IronPort-AV: E=Sophos;i="6.24,218,1774335600"; d="scan'208";a="70361588" Received: from orviesa010.jf.intel.com ([10.64.159.150]) by fmvoesa110.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 22 Jun 2026 02:49:06 -0700 X-CSE-ConnectionGUID: BEuqw1R0QdGKhgvzXIImvg== X-CSE-MsgGUID: +32laX4/Qwy7dRhmymaoOA== X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="6.24,218,1774335600"; d="scan'208";a="248299301" Received: from lkp-server02.sh.intel.com (HELO ea128546eb3d) ([10.239.97.151]) by orviesa010.jf.intel.com with ESMTP; 22 Jun 2026 02:49:04 -0700 Received: from kbuild by ea128546eb3d with local (Exim 4.98.2) (envelope-from ) id 1wbbH3-000000000ur-3vgk; Mon, 22 Jun 2026 09:49:01 +0000 Date: Mon, 22 Jun 2026 17:48:11 +0800 From: kernel test robot To: cros-kernel-buildreports@googlegroups.com Cc: oe-kbuild-all@lists.linux.dev Subject: [android-common:android16-6.12 1/1] drivers/dma-buf/dma-buf.c:443: warning: Function parameter or struct member 'dmabuf_info' not described in 'dma_buf_account_task' Message-ID: <202606221731.lS9CWdUD-lkp@intel.com> User-Agent: s-nail v14.9.25 Precedence: bulk X-Mailing-List: oe-kbuild-all@lists.linux.dev List-Id: List-Subscribe: List-Unsubscribe: tree: https://android.googlesource.com/kernel/common android16-6.12 head: 74c43557c8aed4002d058c4e88c768a6086df9c2 commit: 0f4908d05ae47a5455d6699296a463859b6eb5e3 [1/1] BACKPORT: ANDROID: Fix 32-bit kernelci build break config: i386-defconfig (https://download.01.org/0day-ci/archive/20260622/202606221731.lS9CWdUD-lkp@intel.com/config) compiler: clang version 22.1.3 (https://github.com/llvm/llvm-project e9846648fd6183ee6d8cbdb4502213fcf902a211) reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20260622/202606221731.lS9CWdUD-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/202606221731.lS9CWdUD-lkp@intel.com/ All warnings (new ones prefixed by >>): >> drivers/dma-buf/dma-buf.c:443: warning: Function parameter or struct member 'dmabuf_info' not described in 'dma_buf_account_task' drivers/dma-buf/dma-buf.c:443: warning: Excess function parameter 'task' description in 'dma_buf_account_task' >> drivers/dma-buf/dma-buf.c:458: warning: Function parameter or struct member 'dmabuf_info' not described in 'dma_buf_unaccount_task' drivers/dma-buf/dma-buf.c:458: warning: Excess function parameter 'task' description in 'dma_buf_unaccount_task' drivers/dma-buf/dma-buf.c:1006: warning: Function parameter or struct member 'name' not described in 'dma_buf_set_name' drivers/dma-buf/dma-buf.c:1006: warning: Excess function parameter 'buf' description in 'dma_buf_set_name' vim +443 drivers/dma-buf/dma-buf.c d9e55a883822eb T.J. Mercier 2025-12-30 428 d9e55a883822eb T.J. Mercier 2025-12-30 429 /** d9e55a883822eb T.J. Mercier 2025-12-30 430 * dma_buf_account_task - Account a dmabuf to a task d9e55a883822eb T.J. Mercier 2025-12-30 431 * @dmabuf: [in] pointer to dma_buf d9e55a883822eb T.J. Mercier 2025-12-30 432 * @task: [in] pointer to task_struct d9e55a883822eb T.J. Mercier 2025-12-30 433 * d9e55a883822eb T.J. Mercier 2025-12-30 434 * When a process obtains a dmabuf file descriptor, or maps a dmabuf, this d9e55a883822eb T.J. Mercier 2025-12-30 435 * function attributes the provided @dmabuf to the @task. The first time @dmabuf d9e55a883822eb T.J. Mercier 2025-12-30 436 * is attributed to @task, the buffer's size is added to the @task's dmabuf RSS. d9e55a883822eb T.J. Mercier 2025-12-30 437 * d9e55a883822eb T.J. Mercier 2025-12-30 438 * Return: d9e55a883822eb T.J. Mercier 2025-12-30 439 * * 0 on success d9e55a883822eb T.J. Mercier 2025-12-30 440 * * A negative error code upon error d9e55a883822eb T.J. Mercier 2025-12-30 441 */ d9e55a883822eb T.J. Mercier 2025-12-30 442 int dma_buf_account_task(struct dma_buf *dmabuf, struct task_dma_buf_info *dmabuf_info) d9e55a883822eb T.J. Mercier 2025-12-30 @443 { d9e55a883822eb T.J. Mercier 2025-12-30 444 return __dma_buf_account_task(dmabuf, dmabuf_info, true); d50dd969464c6a T.J. Mercier 2025-07-22 445 } d50dd969464c6a T.J. Mercier 2025-07-22 446 d50dd969464c6a T.J. Mercier 2025-07-22 447 /** d50dd969464c6a T.J. Mercier 2025-07-22 448 * dma_buf_unaccount_task - Unaccount a dmabuf from a task d50dd969464c6a T.J. Mercier 2025-07-22 449 * @dmabuf: [in] pointer to dma_buf d50dd969464c6a T.J. Mercier 2025-07-22 450 * @task: [in] pointer to task_struct d50dd969464c6a T.J. Mercier 2025-07-22 451 * d50dd969464c6a T.J. Mercier 2025-07-22 452 * When a process closes a dmabuf file descriptor, or unmaps a dmabuf, this d50dd969464c6a T.J. Mercier 2025-07-22 453 * function removes the provided @dmabuf attribution from the @task. When all d50dd969464c6a T.J. Mercier 2025-07-22 454 * references to @dmabuf are removed from @task, the buffer's size is removed d50dd969464c6a T.J. Mercier 2025-07-22 455 * from the task's dmabuf RSS. d50dd969464c6a T.J. Mercier 2025-07-22 456 */ f7d26609785ce5 T.J. Mercier 2025-11-12 457 void dma_buf_unaccount_task(struct dma_buf *dmabuf, struct task_dma_buf_info *dmabuf_info) d50dd969464c6a T.J. Mercier 2025-07-22 @458 { d50dd969464c6a T.J. Mercier 2025-07-22 459 struct task_dma_buf_record *rec; d50dd969464c6a T.J. Mercier 2025-07-22 460 a96b41a4e0bc09 Suren Baghdasaryan 2025-08-01 461 if (!static_key_enabled(&dmabuf_accounting_key)) a96b41a4e0bc09 Suren Baghdasaryan 2025-08-01 462 return; a96b41a4e0bc09 Suren Baghdasaryan 2025-08-01 463 d50dd969464c6a T.J. Mercier 2025-07-22 464 if (!dmabuf_info) d50dd969464c6a T.J. Mercier 2025-07-22 465 return; d50dd969464c6a T.J. Mercier 2025-07-22 466 d50dd969464c6a T.J. Mercier 2025-07-22 467 spin_lock(&dmabuf_info->lock); d50dd969464c6a T.J. Mercier 2025-07-22 468 rec = find_task_dmabuf_record(dmabuf_info, dmabuf); d50dd969464c6a T.J. Mercier 2025-07-22 469 if (rec) { d50dd969464c6a T.J. Mercier 2025-07-22 470 if (--rec->refcnt == 0) { d50dd969464c6a T.J. Mercier 2025-07-22 471 list_del(&rec->node); d50dd969464c6a T.J. Mercier 2025-07-22 472 dmabuf_info->dmabuf_count--; d50dd969464c6a T.J. Mercier 2025-07-22 473 dmabuf_info->rss -= dmabuf->size; 2913cc072097bc T.J. Mercier 2025-07-01 474 trace_dmabuf_rss_stat(dmabuf_info->rss, -dmabuf->size, dmabuf); 45ae7f0b6b5f0a T.J. Mercier 2025-07-08 475 atomic64_dec(&dmabuf->nr_task_refs); d50dd969464c6a T.J. Mercier 2025-07-22 476 } else { d50dd969464c6a T.J. Mercier 2025-07-22 477 rec = NULL; d50dd969464c6a T.J. Mercier 2025-07-22 478 } d50dd969464c6a T.J. Mercier 2025-07-22 479 } else { f7d26609785ce5 T.J. Mercier 2025-11-12 480 pr_err("Could not find dmabuf %lu in unaccount\n", f7d26609785ce5 T.J. Mercier 2025-11-12 481 file_inode(dmabuf->file)->i_ino); d50dd969464c6a T.J. Mercier 2025-07-22 482 } d50dd969464c6a T.J. Mercier 2025-07-22 483 spin_unlock(&dmabuf_info->lock); d50dd969464c6a T.J. Mercier 2025-07-22 484 if (rec) d50dd969464c6a T.J. Mercier 2025-07-22 485 free_task_dmabuf_record(rec); d50dd969464c6a T.J. Mercier 2025-07-22 486 } d50dd969464c6a T.J. Mercier 2025-07-22 487 :::::: The code at line 443 was first introduced by commit :::::: d9e55a883822eb50a6c26cc8603007c3c7b5b99d ANDROID: Don't allocate while atomic in dma_buf_begin_new_exec :::::: TO: T.J. Mercier :::::: CC: Treehugger Robot -- 0-DAY CI Kernel Test Service https://github.com/intel/lkp-tests/wiki