On Wed, Dec 01, 2021 at 09:26:18AM +0800, Li Zhijian wrote: > Hi Folks > > > LKP/0Day found that ww_mutex.sh cannot complete since v5.16-rc1, but > I'm pretty sorry that we failed to bisect the FBC, instead, the bisection pointed > to a/below merge commit(91e1c99e17) finally. > > Due to this hang, other tests in the same group are also blocked in 0Day, we > hope we can fix this hang ASAP. > > So if you have any idea about this, or need more debug information, feel free to let me know :) > > BTW, ww_mutex.sh was failed in v5.15 without hang, and looks it cannot reproduce on a vm. On real hardware: root@ivb-ep:/usr/src/linux-2.6/tools/testing/selftests/locking# uname -a Linux ivb-ep 5.16.0-rc3-00284-g68601c558556 #1 SMP PREEMPT Thu Dec 2 23:03:29 CET 2021 x86_64 GNU/Linux root@ivb-ep:/usr/src/linux-2.6/tools/testing/selftests/locking# ./ww_mutex.sh locking/ww_mutex: ok [ 1907.907801] Beginning ww mutex selftests [ 1915.700077] All ww mutex selftests passed What else do I try?
