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?