bisecting fixing commit since 7cc2a8ea104820dd9e702202621e8fd4d9f6c8cf
building syzkaller on 510951950dc0ee69cfdaf746061d3dbe31b49fd8
testing commit 7cc2a8ea104820dd9e702202621e8fd4d9f6c8cf with gcc (GCC) 8.4.1 20210217
kernel signature: 1a1d2595ef8b42cb606e33e16b65cfdcc5769cddd33209112c5bdb2507607901
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: 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: soft lockup in smp_call_function
run #8: crashed: BUG: soft lockup in smp_call_function
run #9: crashed: BUG: soft lockup in smp_call_function
run #10: crashed: BUG: soft lockup in smp_call_function
run #11: crashed: BUG: soft lockup in smp_call_function
run #12: crashed: BUG: workqueue lockup
run #13: crashed: BUG: soft lockup in smp_call_function
run #14: crashed: BUG: workqueue lockup
run #15: crashed: INFO: rcu detected stall in smp_call_function
run #16: crashed: INFO: rcu detected stall in sys_fallocate
run #17: crashed: BUG: soft lockup in smp_call_function
run #18: crashed: BUG: soft lockup in smp_call_function
run #19: crashed: BUG: soft lockup in smp_call_function
testing current HEAD c2131f7e73c9e9365613e323d65c7b9e5b910f56
testing commit c2131f7e73c9e9365613e323d65c7b9e5b910f56 with gcc (GCC) 10.2.1 20210217
kernel signature: 69b626968dcbb6a25e9243ea2eb12e9bbb19f8bcc0693786345336b76ac5e5d3
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 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: INFO: rcu detected stall in do_idle
run #7: crashed: BUG: soft lockup in smp_call_function
run #8: crashed: BUG: soft lockup in smp_call_function
run #9: crashed: no output from test machine
revisions tested: 2, total time: 27m22.170561933s (build: 12m32.431923635s, test: 14m7.461293834s)
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