Messages in this thread | | | Date | Sat, 22 Jan 2022 11:18:52 -0800 | Subject | Re: fs/dlm/midcomms.c:913:22: sparse: sparse: restricted __le32 degrades to integer | From | Randy Dunlap <> |
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On 1/22/22 10:28, Alexander Aring wrote: > Hi, > > On Fri, Jan 21, 2022 at 9:45 PM kernel test robot <lkp@intel.com> wrote: >> >> tree: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master >> head: 9b57f458985742bd1c585f4c7f36d04634ce1143 >> commit: 658bd576f95ed597e519cdadf1c86ac87c17aea5 fs: dlm: move version conversion to compile time >> date: 3 months ago >> config: x86_64-rhel-8.3-kselftests (https://download.01.org/0day-ci/archive/20220122/202201221028.YKA8kSdm-lkp@intel.com/config) >> compiler: gcc-9 (Debian 9.3.0-22) 9.3.0 >> reproduce: >> # apt-get install sparse >> # sparse version: v0.6.4-dirty >> # https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=658bd576f95ed597e519cdadf1c86ac87c17aea5 >> git remote add linus https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git >> git fetch --no-tags linus master >> git checkout 658bd576f95ed597e519cdadf1c86ac87c17aea5 >> # save the config file to linux build tree >> mkdir build_dir >> make W=1 C=1 CF='-fdiagnostic-prefix -D__CHECK_ENDIAN__' O=build_dir ARCH=x86_64 SHELL=/bin/bash >> >> If you fix the issue, kindly add following tag as appropriate > > I have it on my list but it isn't easy to make sparse happy here... > this is the second time the robot reported this issue. Is there a way > to turn the robot off in that case? > > Maybe some human who reads that knows the answer?
Hi Alex,
In the source file, you can surround the "offending" line(s) with
#ifndef __CHECKER__ ... #endif
to prevent sparse from checking those lines. Sometimes there needs to be an "#else" branch also.
'git grep __CHECKER__' will show you quite a few other examples.
kernel test robot might have a different way to disable this test for a specific source file. I dunno.
-- ~Randy
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