bisecting fixing commit since fb893de323e2d39f7a1f6df425703a2edbdf56ea
building syzkaller on bc15f7dbbc1c6e2042a7115b3fdacc0ada8c35e7
testing commit fb893de323e2d39f7a1f6df425703a2edbdf56ea with gcc (GCC) 8.4.1 20210217
kernel signature: 2bee816e6fc05d6cb4590f5e8ed0dd0b4185585a4fe74e4e09c5420383f2eaf0
run #0: crashed: BUG: soft lockup in do_idle
run #1: crashed: BUG: soft lockup in smp_call_function
run #2: crashed: BUG: soft lockup in do_idle
run #3: crashed: BUG: soft lockup in do_idle
run #4: crashed: BUG: soft lockup in do_idle
run #5: crashed: BUG: workqueue lockup
run #6: crashed: BUG: workqueue lockup
run #7: crashed: BUG: soft lockup in rtnl_newlink
run #8: crashed: BUG: workqueue lockup
run #9: crashed: BUG: soft lockup in do_idle
run #10: crashed: BUG: soft lockup in rtnl_newlink
run #11: crashed: BUG: soft lockup in do_idle
run #12: crashed: INFO: rcu detected stall in do_faccessat
run #13: crashed: BUG: soft lockup in mutex_spin_on_owner
run #14: crashed: BUG: workqueue lockup
run #15: crashed: BUG: soft lockup in mutex_spin_on_owner
run #16: crashed: INFO: rcu detected stall in sys_getdents
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 fe07bfda2fb9cdef8a4d4008a409bb02f35f1bd8
testing commit fe07bfda2fb9cdef8a4d4008a409bb02f35f1bd8 with gcc (GCC) 10.2.1 20210217
kernel signature: 64416024d68a63dda0622e0afe02c55af77e8828c81eca50c4b72e461542f161
run #0: crashed: BUG: soft lockup in smp_call_function
run #1: crashed: BUG: workqueue lockup
run #2: crashed: BUG: workqueue lockup
run #3: crashed: BUG: soft lockup in do_idle
run #4: crashed: INFO: rcu detected stall in do_idle
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: 29m56.675811939s (build: 12m49.993600866s, test: 16m22.157295474s)
the crash still happens on HEAD
commit msg: Linux 5.12-rc1
crash: no output from test machine