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3u5O8Z7pjXjjFmc0IjHL2hkqcEogWG02koMAcbpd4D93zUZv43V/n/f+mzS3h2R0nz9BtgIZYgbrHzJCafARfA== X-MS-Exchange-Transport-CrossTenantHeadersStamped: DM4PR11MB5971 X-OriginatorOrg: intel.com On Wed, Jul 24, 2024 at 11:45:42AM +0930, Qu Wenruo wrote: > > > 在 2024/7/24 11:32, Philip Li 写道: > > On Tue, Jul 23, 2024 at 08:18:41PM +0800, kernel test robot wrote: > > > Hi Qu, > > > > > > FYI, the error/warning was bisected to this commit, please ignore it if it's irrelevant. > > > > > > tree: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master > > > head: 66ebbdfdeb093e097399b1883390079cd4c3022b > > > commit: 400b172b8cdcff87038697169fe9e4222120dd9a btrfs: compression: migrate compression/decompression paths to folios > > > date: 3 months ago > > > config: loongarch-randconfig-001-20240722 (https://download.01.org/0day-ci/archive/20240723/202407232006.7Gelsbv4-lkp@intel.com/config) > > > compiler: loongarch64-linux-gcc (GCC) 14.1.0 > > > reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20240723/202407232006.7Gelsbv4-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 > > > | Closes: https://lore.kernel.org/oe-kbuild-all/202407232006.7Gelsbv4-lkp@intel.com/ > > > > > > All warnings (new ones prefixed by >>): > > > > Sorry, kindly ignore this report which could be related to tool chain upgrade to > > loongarch64-linux-gcc (GCC) 14.1.0. > > > > We will further check whether the issue can be reproduced on gcc-13. > > Gcc 14.1 is totally fine, as that's the version I'm using already (although > a little newer, 14.1.1) > > It would be even better to focus on more common architectures first (x86_64, > aarch64), and put a lower priority on less common architectures. thanks for the suggestion, the bot covers all archs, for the case here, the commit works fine on x86 or aarch64, and only triggers a bisected report on loongarch. We will block such false positve report and do a comparison check whether this specific issue can be reproduced on other compilers, though we can not quickly tell whether this is toolchain issue or real issue. > > As most developers are not really able to access those platforms easily. > > Thanks, > Qu > > > > > > > > > > > fs/btrfs/lzo.o: warning: objtool: lzo_compress_folios+0xb0: unreachable instruction > > > fs/btrfs/lzo.o: warning: objtool: lzo_decompress_bio+0x140: unreachable instruction > > > > > > > > > objdump-func vmlinux.o lzo_compress_folios: > > > > > > -- > > > 0-DAY CI Kernel Test Service > > > https://github.com/intel/lkp-tests/wiki > > >