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: 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: workqueue lockup
run #11: crashed: BUG: workqueue lockup
run #12: crashed: BUG: soft lockup in smp_call_function
run #13: crashed: BUG: soft lockup in smp_call_function
run #14: crashed: BUG: soft lockup in smp_call_function
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: boot failed: can't ssh into the instance
testing current HEAD 2023a53bdf41b7646b1d384b6816af06309f73a5
testing commit 2023a53bdf41b7646b1d384b6816af06309f73a5 with gcc (GCC) 10.2.1 20210217
kernel signature: b1e27874123eabb7a758db6efaac4ca38255b927b6c5027890ce7b7afbe16559
run #0: crashed: BUG: soft lockup in smp_call_function
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: 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: 31m39.156624701s (build: 12m23.390053921s, test: 18m30.987752461s)
the crash still happens on HEAD
commit msg: Merge tag 'for-linus' of git://github.com/openrisc/linux
crash: no output from test machine