On Fri, Dec 04, 2020 at 11:51:39PM +0530, Naresh Kamboju wrote: > LKFT started testing KCSAN enabled kernel from the linux next tree. > Here we have found BUG: KCSAN: data-race in mutex_spin_on_owner > and several more KCSAN BUGs. > > This report is from an x86_64 machine clang-11 linux next 20201201. > Since we are running for the first time we do not call this regression. > > [ 4.745161] usbcore: registered new interface driver cdc_ether > [ 4.751281] ================================================================== > [ 4.756653] usbcore: registered new interface driver net1080 > [ 4.752139] BUG: KCSAN: data-race in mutex_spin_on_owner+0xef/0x1b0 At the very least run your splat through ./scripts/decode_stacktrace.sh It's impossible to know what the thing is complaining about. I suspect this is one of those known KCSAN 'bugs' where it can't tell a load+cmp0 is perfectly fine.
