bisecting fixing commit since e0f8b8a65a473a8baa439cf865a694bbeb83fe90
building syzkaller on 5d7b90f1af2e3bf33992b75e7fcf0bab6bf49bd6
testing commit e0f8b8a65a473a8baa439cf865a694bbeb83fe90 with gcc (GCC) 8.4.1 20210217
kernel signature: 74f97d36191c130489dfcf0d8bd99d2edefd2037777b441961836423e084d6e0
run #0: crashed: possible deadlock in console_unlock
run #1: crashed: possible deadlock in console_unlock
run #2: crashed: possible deadlock in pty_write
run #3: crashed: possible deadlock in console_unlock
run #4: crashed: possible deadlock in pty_write
run #5: crashed: possible deadlock in console_unlock
run #6: crashed: possible deadlock in console_unlock
run #7: crashed: possible deadlock in pty_write
run #8: crashed: possible deadlock in console_unlock
run #9: crashed: possible deadlock in console_unlock
run #10: crashed: possible deadlock in console_unlock
run #11: crashed: possible deadlock in pty_write
run #12: crashed: possible deadlock in console_unlock
run #13: crashed: possible deadlock in pty_write
run #14: crashed: possible deadlock in pty_write
run #15: crashed: possible deadlock in pty_write
run #16: crashed: possible deadlock in console_unlock
run #17: crashed: possible deadlock in pty_write
run #18: crashed: possible deadlock in console_unlock
run #19: crashed: possible deadlock in console_unlock
testing current HEAD cfb41ef9deb1e6572ac218ddfcec9567e5d1c101
testing commit cfb41ef9deb1e6572ac218ddfcec9567e5d1c101 with gcc (GCC) 8.4.1 20210217
kernel signature: 5a28dba349845359561e1d2bd831e8713a43e3a0f080aea4c4368fa456fae538
all runs: crashed: unregister_netdevice: waiting for DEV to become free
revisions tested: 2, total time: 22m52.349697016s (build: 16m1.982013625s, test: 6m25.83285422s)
the crash still happens on HEAD
commit msg: Linux 4.14.237
crash: unregister_netdevice: waiting for DEV to become free
can: request_module (can-proto-0) failed.
can: request_module (can-proto-0) failed.
unregister_netdevice: waiting for ip6gre0 to become free. Usage count = -1