From: kernel test robot <lkp@intel.com>
To: oe-kbuild@lists.linux.dev
Cc: lkp@intel.com
Subject: [android-common:android16-6.12 1/1] lib/math/div64.c:219:25: sparse: sparse: division by zero
Date: Tue, 31 Mar 2026 13:17:25 +0800 [thread overview]
Message-ID: <202603311319.fcJIVYvA-lkp@intel.com> (raw)
::::::
:::::: Manual check reason: "low confidence static check warning: lib/math/div64.c:219:25: sparse: sparse: division by zero"
::::::
BCC: lkp@intel.com
CC: oe-kbuild-all@lists.linux.dev
TO: cros-kernel-buildreports@googlegroups.com
tree: https://android.googlesource.com/kernel/common android16-6.12
head: c9dd6d939a0d4c818436b4f27e08d48e330fc6c4
commit: 1635e62e75a7bbb1c6274f6b43911cedfe0da60a [1/1] mul_u64_u64_div_u64: basic sanity test
:::::: branch date: 10 hours ago
:::::: commit date: 1 year, 7 months ago
config: i386-randconfig-r112-20260331 (https://download.01.org/0day-ci/archive/20260331/202603311319.fcJIVYvA-lkp@intel.com/config)
compiler: gcc-14 (Debian 14.2.0-19) 14.2.0
sparse: v0.6.5-rc1
reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20260331/202603311319.fcJIVYvA-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/r/202603311319.fcJIVYvA-lkp@intel.com/
sparse warnings: (new ones prefixed by >>)
>> lib/math/div64.c:219:25: sparse: sparse: division by zero
vim +219 lib/math/div64.c
b29a62d87cc0af Nicolas Pitre 2024-07-07 214
1635e62e75a7bb Nicolas Pitre 2024-07-07 215 /* make sure c is not zero, trigger exception otherwise */
1635e62e75a7bb Nicolas Pitre 2024-07-07 216 #pragma GCC diagnostic push
1635e62e75a7bb Nicolas Pitre 2024-07-07 217 #pragma GCC diagnostic ignored "-Wdiv-by-zero"
1635e62e75a7bb Nicolas Pitre 2024-07-07 218 if (unlikely(c == 0))
1635e62e75a7bb Nicolas Pitre 2024-07-07 @219 return 1/0;
--
0-DAY CI Kernel Test Service
https://github.com/intel/lkp-tests/wiki
reply other threads:[~2026-03-31 5:18 UTC|newest]
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