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: soft lockup in smp_call_function
run #2: crashed: BUG: soft lockup in smp_call_function
run #3: crashed: BUG: soft lockup in smp_call_function
run #4: crashed: BUG: soft lockup in smp_call_function
run #5: crashed: BUG: soft lockup in smp_call_function
run #6: crashed: BUG: workqueue lockup
run #7: crashed: BUG: workqueue lockup
run #8: crashed: INFO: rcu detected stall in netlink_sendmsg
run #9: crashed: INFO: rcu detected stall in clock_adjtime
run #10: crashed: INFO: rcu detected stall in netlink_sendmsg
run #11: crashed: INFO: rcu detected stall in sys_execve
run #12: crashed: INFO: rcu detected stall in clock_adjtime
run #13: crashed: BUG: soft lockup in smp_call_function
run #14: crashed: BUG: soft lockup in smp_call_function
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 3cb60ee6323968b694208c4cbd56a7176396e931
testing commit 3cb60ee6323968b694208c4cbd56a7176396e931 with gcc (GCC) 10.2.1 20210217
kernel signature: ed06c07f53b3222ebd15c259972aeb9904449eb292dbad85a267658478709fef
run #0: crashed: BUG: workqueue lockup
run #1: crashed: BUG: workqueue lockup
run #2: crashed: BUG: soft lockup in smp_call_function
run #3: crashed: BUG: soft lockup in smp_call_function
run #4: crashed: BUG: workqueue lockup
run #5: crashed: INFO: rcu detected stall in do_idle
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: 30m30.758771521s (build: 12m13.676900097s, test: 17m27.319254663s)
the crash still happens on HEAD
commit msg: Merge tag 'tpmdd-next-v5.12-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/jarkko/linux-tpmdd
crash: no output from test machine