Re: [PATCH V10 12/12] ublk: support leasing io buffer to io_uring

[kernel test robot <lkp@intel.com>]

BCC: lkp@intel.com
CC: oe-kbuild-all@lists.linux.dev
In-Reply-To: <20241107110149.890530-13-ming.lei@redhat.com>
References: <20241107110149.890530-13-ming.lei@redhat.com>
TO: Ming Lei <ming.lei@redhat.com>
TO: Jens Axboe <axboe@kernel.dk>
TO: io-uring@vger.kernel.org
TO: Pavel Begunkov <asml.silence@gmail.com>
CC: linux-block@vger.kernel.org
CC: Uday Shankar <ushankar@purestorage.com>
CC: Akilesh Kailash <akailash@google.com>
CC: Ming Lei <ming.lei@redhat.com>

Hi Ming,

kernel test robot noticed the following build warnings:

[auto build test WARNING on axboe-block/for-next]
[also build test WARNING on next-20241107]
[cannot apply to linus/master v6.12-rc6]
[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/Ming-Lei/io_uring-rsrc-pass-struct-io_ring_ctx-reference-to-rsrc-helpers/20241107-190456
base:   https://git.kernel.org/pub/scm/linux/kernel/git/axboe/linux-block.git for-next
patch link:    https://lore.kernel.org/r/20241107110149.890530-13-ming.lei%40redhat.com
patch subject: [PATCH V10 12/12] ublk: support leasing io buffer to io_uring
:::::: branch date: 11 hours ago
:::::: commit date: 11 hours ago
config: x86_64-randconfig-r063-20241108 (https://download.01.org/0day-ci/archive/20241108/202411080639.shF21Vmc-lkp@intel.com/config)
compiler: gcc-12 (Debian 12.2.0-14) 12.2.0

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>
| Reported-by: Julia Lawall <julia.lawall@inria.fr>
| Closes: https://lore.kernel.org/r/202411080639.shF21Vmc-lkp@intel.com/

cocci warnings: (new ones prefixed by >>)
>> drivers/block/ublk_drv.c:88:19-22: WARNING use flexible-array member instead (https://www.kernel.org/doc/html/latest/process/deprecated.html#zero-length-and-one-element-arrays)

vim +88 drivers/block/ublk_drv.c

79e9f68a5502d0 Ming Lei 2024-11-07  81  
0edb3696c1713c Ming Lei 2022-07-13  82  struct ublk_rq_data {
3ab6e94ca53924 Ming Lei 2022-10-29  83  	struct llist_node node;
8284066946e6d9 Ming Lei 2023-05-19  84  
8284066946e6d9 Ming Lei 2023-05-19  85  	struct kref ref;
79e9f68a5502d0 Ming Lei 2024-11-07  86  
79e9f68a5502d0 Ming Lei 2024-11-07  87  	bool allocated_bvec;
79e9f68a5502d0 Ming Lei 2024-11-07 @88  	struct uring_kbuf buf[0];
0edb3696c1713c Ming Lei 2022-07-13  89  };
0edb3696c1713c Ming Lei 2022-07-13  90  

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