bisecting fixing commit since 4b6c093e21d36bede0fd88fd0aeb3b03647260e4
building syzkaller on 424dd8e7b52828cad44ce653a5d4ac30670f5e2c
testing commit 4b6c093e21d36bede0fd88fd0aeb3b03647260e4 with gcc (GCC) 8.4.1 20210217
kernel signature: 8c9d1a13622c1d77dd8186e3c6f86a6adb657c867589e56f1aae1c651e3d66ff
run #0: crashed: BUG: workqueue lockup
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 corrupted
run #6: crashed: BUG: workqueue lockup
run #7: crashed: BUG: workqueue lockup
run #8: crashed: INFO: rcu detected stall in tc_modify_qdisc
run #9: crashed: INFO: rcu detected stall in tc_modify_qdisc
run #10: crashed: INFO: rcu detected stall in tc_modify_qdisc
run #11: crashed: INFO: rcu detected stall in addrconf_dad_work
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: INFO: rcu detected stall in rtnl_newlink
testing current HEAD 1678e493d530e7977cce34e59a86bb86f3c5631e
testing commit 1678e493d530e7977cce34e59a86bb86f3c5631e with gcc (GCC) 10.2.1 20210217
kernel signature: af0c6a6c18fa2d088190033b98ea947f23eab5355416d91a43e0efd569e49959
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: workqueue lockup
run #4: crashed: BUG: workqueue lockup
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: 28m47.891862919s (build: 11m27.256837631s, test: 16m36.803361336s)
the crash still happens on HEAD
commit msg: Merge tag 'lto-v5.12-rc6' of git://git.kernel.org/pub/scm/linux/kernel/git/kees/linux
crash: no output from test machine