bisecting fixing commit since a581387e415bbb0085e7e67906c8f4a99746590e
building syzkaller on 18d18b591b354e07ba76be8f115b7119d49056a9
testing commit a581387e415bbb0085e7e67906c8f4a99746590e with gcc (GCC) 8.4.1 20210217
kernel signature: f0285dbeb4f7b1fcba8e4fd8ff56a8892b2ca48900d82b72831de1843315d13f
run #0: crashed: BUG: soft lockup in smp_call_function
run #1: crashed: BUG: workqueue lockup
run #2: crashed: BUG: soft lockup in smp_call_function
run #3: crashed: BUG: workqueue lockup
run #4: crashed: BUG: workqueue lockup
run #5: crashed: INFO: rcu detected stall in rtnl_newlink
run #6: crashed: INFO: rcu detected stall in seq_read
run #7: crashed: INFO: rcu detected stall in clock_adjtime
run #8: crashed: BUG: soft lockup in smp_call_function
run #9: crashed: INFO: rcu detected stall in linkwatch_event
run #10: crashed: no output from test machine
run #11: crashed: no output from test machine
run #12: crashed: no output from test machine
run #13: crashed: no output from test machine
run #14: crashed: no output from test machine
run #15: crashed: no output from test machine
run #16: crashed: no output from test machine
run #17: crashed: no output from test machine
run #18: crashed: no output from test machine
run #19: crashed: no output from test machine
testing current HEAD f88cd3fb9df228e5ce4e13ec3dbad671ddb2146e
testing commit f88cd3fb9df228e5ce4e13ec3dbad671ddb2146e with gcc (GCC) 10.2.1 20210217
kernel signature: b7a86e7763392bd7001413ed4c7a7e5de21ab44973d651845b87ce06de56cc53
run #0: crashed: BUG: workqueue lockup
run #1: crashed: INFO: rcu detected stall in do_idle
run #2: crashed: INFO: rcu detected stall in do_idle
run #3: crashed: no output from test machine
run #4: crashed: no output from test machine
run #5: crashed: no output from test machine
run #6: crashed: no output from test machine
run #7: crashed: no output from test machine
run #8: crashed: no output from test machine
run #9: crashed: no output from test machine
revisions tested: 2, total time: 30m0.831148503s (build: 13m3.229836694s, test: 16m5.240947776s)
the crash still happens on HEAD
commit msg: Merge tag 'vfio-v5.13-rc5' of git://github.com/awilliam/linux-vfio
crash: no output from test machine