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 smp_call_function
run #1: crashed: BUG: soft lockup in do_idle
run #2: crashed: BUG: soft lockup in linkwatch_event
run #3: crashed: BUG: workqueue lockup
run #4: crashed: BUG: soft lockup in do_idle
run #5: crashed: BUG: workqueue lockup
run #6: crashed: BUG: soft lockup in do_idle
run #7: crashed: BUG: soft lockup in do_idle
run #8: crashed: BUG: workqueue lockup
run #9: crashed: BUG: workqueue lockup
run #10: crashed: BUG: soft lockup in do_idle
run #11: crashed: BUG: soft lockup in do_idle
run #12: crashed: BUG: soft lockup in do_idle
run #13: crashed: BUG: soft lockup in do_idle
run #14: crashed: BUG: soft lockup in ipv6_rcv
run #15: crashed: BUG: soft lockup in mutex_spin_on_owner
run #16: crashed: INFO: rcu detected stall in addrconf_dad_work
run #17: crashed: INFO: rcu detected stall in addrconf_dad_work
run #18: crashed: BUG: soft lockup in addrconf_dad_work
run #19: crashed: no output from test machine
testing current HEAD c2131f7e73c9e9365613e323d65c7b9e5b910f56
testing commit c2131f7e73c9e9365613e323d65c7b9e5b910f56 with gcc (GCC) 10.2.1 20210217
kernel signature: 3e8770f3d249be73af7bff562446955525b67833d737802f93da67e49e312f26
run #0: crashed: BUG: soft lockup in do_idle
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: INFO: rcu detected stall in do_idle
run #5: crashed: INFO: rcu detected stall in do_idle
run #6: crashed: INFO: rcu detected stall in do_idle
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: 32m7.365836013s (build: 14m27.276918956s, test: 16m37.509308929s)
the crash still happens on HEAD
commit msg: Merge tag 'gfs2-v5.13-rc2-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/gfs2/linux-gfs2
crash: no output from test machine