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Wed, 09 Aug 2023 22:07:30 -0700 (PDT) Date: Thu, 10 Aug 2023 08:07:27 +0300 From: Dan Carpenter To: oe-kbuild@lists.linux.dev, Andreas Hindborg Cc: lkp@intel.com, oe-kbuild-all@lists.linux.dev, Linux Memory Management List , Jens Axboe , Ming Lei Subject: [linux-next:master 8194/8441] drivers/block/ublk_drv.c:445 ublk_setup_iod_zoned() warn: signedness bug returning '(-95)' Message-ID: MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline X-Rspamd-Queue-Id: 4DD568000D X-Rspam-User: X-Rspamd-Server: rspam05 X-Stat-Signature: r7mg1j3haedf1yrdjkdizeayjfwt1qfy X-HE-Tag: 1691644052-342374 X-HE-Meta: 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 mrP/Br+m 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 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: tree: https://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git master head: 21ef7b1e17d039053edaeaf41142423810572741 commit: 29802d7ca33bc0a75c9da2a143eeed4f9e99fca4 [8194/8441] ublk: enable zoned storage support config: s390-randconfig-m041-20230809 (https://download.01.org/0day-ci/archive/20230810/202308100201.TCRhgdvN-lkp@intel.com/config) compiler: s390-linux-gcc (GCC) 12.3.0 reproduce: (https://download.01.org/0day-ci/archive/20230810/202308100201.TCRhgdvN-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 | Reported-by: Dan Carpenter | Closes: https://lore.kernel.org/r/202308100201.TCRhgdvN-lkp@intel.com/ New smatch warnings: drivers/block/ublk_drv.c:445 ublk_setup_iod_zoned() warn: signedness bug returning '(-95)' Old smatch warnings: drivers/block/ublk_drv.c:963 ublk_setup_iod() warn: signedness bug returning '(-5)' drivers/block/ublk_drv.c:1404 ublk_commit_completion() warn: variable dereferenced before check 'req' (see line 1401) vim +445 drivers/block/ublk_drv.c 29802d7ca33bc0 Andreas Hindborg 2023-08-04 442 static blk_status_t ublk_setup_iod_zoned(struct ublk_queue *ubq, 29802d7ca33bc0 Andreas Hindborg 2023-08-04 443 struct request *req) 29802d7ca33bc0 Andreas Hindborg 2023-08-04 444 { 29802d7ca33bc0 Andreas Hindborg 2023-08-04 @445 return -EOPNOTSUPP; blk_status_t can either be a u32 or a u8 but for this warning to trigger it must be a u8 in this case. 29802d7ca33bc0 Andreas Hindborg 2023-08-04 446 } -- 0-DAY CI Kernel Test Service https://github.com/intel/lkp-tests/wiki