bisecting fixing commit since e0f8b8a65a473a8baa439cf865a694bbeb83fe90
building syzkaller on 5d7b90f1af2e3bf33992b75e7fcf0bab6bf49bd6
testing commit e0f8b8a65a473a8baa439cf865a694bbeb83fe90
compiler: gcc version 8.4.1 20210217 (GCC)
kernel signature: 21061145e9d928617168c90fa7f1924e119deeabd3da3e529889131adb8e7deb
run #0: crashed: possible deadlock in pty_write
run #1: crashed: possible deadlock in pty_write
run #2: crashed: possible deadlock in console_unlock
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 console_unlock
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 console_unlock
run #12: crashed: possible deadlock in console_unlock
run #13: crashed: possible deadlock in pty_write
run #14: crashed: possible deadlock in console_unlock
run #15: crashed: possible deadlock in console_unlock
run #16: crashed: possible deadlock in pty_write
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 ed99bf0e81b558df39f7db2fa96d0228be4198c6
testing commit ed99bf0e81b558df39f7db2fa96d0228be4198c6
compiler: gcc version 8.4.1 20210217 (GCC)
kernel signature: f9b844e6ba935d1d22b31da062e35564684ce402f765bbf9c6278926bd7f0dda
all runs: crashed: unregister_netdevice: waiting for DEV to become free
revisions tested: 2, total time: 27m31.188854601s (build: 20m5.41332469s, test: 6m30.468186984s)
the crash still happens on HEAD
commit msg: Linux 4.14.250
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
random: crng init done
random: 7 urandom warning(s) missed due to ratelimiting