On Sat, Nov 24, 2018 at 09:20:38AM +0800, kernel test robot wrote: > Greetings, > > 0day kernel testing robot got the below dmesg and the first bad commit is > > https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master > > commit dad4f140edaa3f6bb452b6913d41af1ffd672e45 I think you've got the wrong bisection point, confused by other messages. Here's the messages I think you intend to chase: [ 155.389297] BUG: workqueue lockup - pool cpus=0 node=0 flags=0x0 nice=0 stuck for 52s! [ 155.409004] BUG: workqueue lockup - pool cpus=0 flags=0x4 nice=0 stuck for 40 s! [ 155.420377] Showing busy workqueues and worker pools: [ 155.428445] workqueue events: flags=0x0 [ 155.434634] pwq 0: cpus=0 node=0 flags=0x0 nice=0 active=1/256 [ 155.437904] pending: cache_reap [ 155.449671] workqueue events_power_efficient: flags=0x82 [ 155.458000] pwq 2: cpus=0 flags=0x4 nice=0 active=3/256 [ 155.461269] pending: neigh_periodic_work, do_cache_clean, check_lifetime but you're getting hung up on the testsuite problems.