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: 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 smp_call_function
run #6: crashed: BUG: soft lockup in smp_call_function
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: workqueue lockup
run #12: crashed: BUG: workqueue lockup
run #13: crashed: INFO: rcu detected stall in linkwatch_event
run #14: crashed: INFO: rcu detected stall in sys_clock_settime
run #15: crashed: BUG: soft lockup in smp_call_function
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 303392fd5c160822bf778270b28ec5ea50cab2b4
testing commit 303392fd5c160822bf778270b28ec5ea50cab2b4 with gcc (GCC) 10.2.1 20210217
kernel signature: 9258785ee732ab11688c64822fafc0a665f96bee0d451beb4681bf1dc3d19101
all runs: boot failed: kernel panic: VFS: Unable to mount root fs on unknown-block(0,0)
revisions tested: 2, total time: 31m47.113701026s (build: 12m3.403188584s, test: 18m52.564778879s)
bisection is inconclusive, the first good commit could be any of:
7cc2a8ea104820dd9e702202621e8fd4d9f6c8cf
303392fd5c160822bf778270b28ec5ea50cab2b4