From: kernel test robot <lkp@intel.com>
To: Ling Xu <quic_lxu5@quicinc.com>,
srini@kernel.org, amahesh@qti.qualcomm.com, arnd@arndb.de,
gregkh@linuxfoundation.org, sumit.semwal@linaro.org,
christian.koenig@amd.com, thierry.escande@linaro.org,
quic_vgattupa@quicinc.com
Cc: llvm@lists.linux.dev, oe-kbuild-all@lists.linux.dev,
quic_kuiw@quicinc.com, ekansh.gupta@oss.qualcomm.com,
dri-devel@lists.freedesktop.org, linux-arm-msm@vger.kernel.org,
linux-media@vger.kernel.org, linaro-mm-sig@lists.linaro.org,
linux-kernel@vger.kernel.org, Ling Xu <quic_lxu5@quicinc.com>,
stable@kernel.org
Subject: Re: [PATCH v2 4/4] misc: fastrpc: Skip reference for DMA handles
Date: Thu, 7 Aug 2025 07:19:41 +0800 [thread overview]
Message-ID: <202508070731.S30957lV-lkp@intel.com> (raw)
In-Reply-To: <20250806115114.688814-5-quic_lxu5@quicinc.com>
Hi Ling,
kernel test robot noticed the following build warnings:
[auto build test WARNING on char-misc/char-misc-testing]
[also build test WARNING on char-misc/char-misc-next char-misc/char-misc-linus linus/master v6.16 next-20250806]
[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/Ling-Xu/misc-fastrpc-Save-actual-DMA-size-in-fastrpc_map-structure/20250806-200133
base: char-misc/char-misc-testing
patch link: https://lore.kernel.org/r/20250806115114.688814-5-quic_lxu5%40quicinc.com
patch subject: [PATCH v2 4/4] misc: fastrpc: Skip reference for DMA handles
config: hexagon-randconfig-002-20250807 (https://download.01.org/0day-ci/archive/20250807/202508070731.S30957lV-lkp@intel.com/config)
compiler: clang version 22.0.0git (https://github.com/llvm/llvm-project 7b8dea265e72c3037b6b1e54d5ab51b7e14f328b)
reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20250807/202508070731.S30957lV-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@intel.com>
| Closes: https://lore.kernel.org/oe-kbuild-all/202508070731.S30957lV-lkp@intel.com/
All warnings (new ones prefixed by >>):
>> drivers/misc/fastrpc.c:368:30: warning: unused variable 'sess' [-Wunused-variable]
368 | struct fastrpc_session_ctx *sess = fl->sctx;
| ^~~~
1 warning generated.
vim +/sess +368 drivers/misc/fastrpc.c
c68cfb718c8f97 Srinivas Kandagatla 2019-02-08 363
8f6c1d8c4f0cc3 Vamsi Krishna Gattupalli 2022-02-14 364
8f6c1d8c4f0cc3 Vamsi Krishna Gattupalli 2022-02-14 365 static int fastrpc_map_lookup(struct fastrpc_user *fl, int fd,
1922c68c56c660 Ling Xu 2025-08-06 366 struct fastrpc_map **ppmap)
c68cfb718c8f97 Srinivas Kandagatla 2019-02-08 367 {
9446fa1683a7e3 Abel Vesa 2022-11-24 @368 struct fastrpc_session_ctx *sess = fl->sctx;
c68cfb718c8f97 Srinivas Kandagatla 2019-02-08 369 struct fastrpc_map *map = NULL;
d259063578ed76 Ling Xu 2025-08-06 370 struct dma_buf *buf;
9446fa1683a7e3 Abel Vesa 2022-11-24 371 int ret = -ENOENT;
c68cfb718c8f97 Srinivas Kandagatla 2019-02-08 372
d259063578ed76 Ling Xu 2025-08-06 373 buf = dma_buf_get(fd);
d259063578ed76 Ling Xu 2025-08-06 374 if (IS_ERR(buf))
d259063578ed76 Ling Xu 2025-08-06 375 return PTR_ERR(buf);
d259063578ed76 Ling Xu 2025-08-06 376
9446fa1683a7e3 Abel Vesa 2022-11-24 377 spin_lock(&fl->lock);
c68cfb718c8f97 Srinivas Kandagatla 2019-02-08 378 list_for_each_entry(map, &fl->maps, node) {
d259063578ed76 Ling Xu 2025-08-06 379 if (map->fd != fd || map->buf != buf)
9446fa1683a7e3 Abel Vesa 2022-11-24 380 continue;
9446fa1683a7e3 Abel Vesa 2022-11-24 381
9446fa1683a7e3 Abel Vesa 2022-11-24 382 *ppmap = map;
9446fa1683a7e3 Abel Vesa 2022-11-24 383 ret = 0;
9446fa1683a7e3 Abel Vesa 2022-11-24 384 break;
c68cfb718c8f97 Srinivas Kandagatla 2019-02-08 385 }
9446fa1683a7e3 Abel Vesa 2022-11-24 386 spin_unlock(&fl->lock);
8f6c1d8c4f0cc3 Vamsi Krishna Gattupalli 2022-02-14 387
8f6c1d8c4f0cc3 Vamsi Krishna Gattupalli 2022-02-14 388 return ret;
8f6c1d8c4f0cc3 Vamsi Krishna Gattupalli 2022-02-14 389 }
8f6c1d8c4f0cc3 Vamsi Krishna Gattupalli 2022-02-14 390
--
0-DAY CI Kernel Test Service
https://github.com/intel/lkp-tests/wiki
prev parent reply other threads:[~2025-08-06 23:20 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
2025-08-06 11:51 [PATCH v2 0/4] Add missing fixes to FastRPC driver Ling Xu
2025-08-06 11:51 ` [PATCH v2 1/4] misc: fastrpc: Save actual DMA size in fastrpc_map structure Ling Xu
2025-08-06 11:51 ` [PATCH v2 2/4] misc: fastrpc: Fix fastrpc_map_lookup operation Ling Xu
2025-08-06 11:51 ` [PATCH v2 3/4] misc: fastrpc: fix possible map leak in fastrpc_put_args Ling Xu
2025-08-06 11:51 ` [PATCH v2 4/4] misc: fastrpc: Skip reference for DMA handles Ling Xu
2025-08-06 23:19 ` kernel test robot [this message]
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