bisecting fixing commit since 3f2ecb86cb909da0b9157fd2952ad79924cbe5ae
building syzkaller on c2c1d1dd603b7d66d283253ffbd61b8692712bd2
testing commit 3f2ecb86cb909da0b9157fd2952ad79924cbe5ae with gcc (GCC) 8.4.1 20210217
kernel signature: 289f88527d0fd3c44fb9adb00b465d04158786d6eae818a08e22ec3bbf90d4c6
run #0: crashed: inconsistent lock state in free_huge_page
run #1: crashed: inconsistent lock state in free_huge_page
run #2: crashed: inconsistent lock state in free_huge_page
run #3: crashed: inconsistent lock state in free_huge_page
run #4: crashed: inconsistent lock state in free_huge_page
run #5: crashed: inconsistent lock state in free_huge_page
run #6: crashed: inconsistent lock state in free_huge_page
run #7: crashed: inconsistent lock state in free_huge_page
run #8: crashed: inconsistent lock state in free_huge_page
run #9: crashed: inconsistent lock state in free_huge_page
run #10: crashed: inconsistent lock state in free_huge_page
run #11: crashed: inconsistent lock state in free_huge_page
run #12: crashed: possible deadlock in sk_clone_lock
run #13: crashed: possible deadlock in sk_clone_lock
run #14: crashed: possible deadlock in sk_clone_lock
run #15: crashed: possible deadlock in sk_clone_lock
run #16: crashed: possible deadlock in sk_clone_lock
run #17: crashed: possible deadlock in sk_clone_lock
run #18: crashed: possible deadlock in sk_clone_lock
run #19: crashed: possible deadlock in sk_clone_lock
testing current HEAD cfb41ef9deb1e6572ac218ddfcec9567e5d1c101
testing commit cfb41ef9deb1e6572ac218ddfcec9567e5d1c101 with gcc (GCC) 8.4.1 20210217
kernel signature: 0bc2ba3996638170ae1f040385a403e2b027243fceb534b2e67cf0ff6f5254a2
all runs: crashed: unregister_netdevice: waiting for DEV to become free
revisions tested: 2, total time: 26m24.19636701s (build: 13m57.524252498s, test: 12m6.537236794s)
the crash still happens on HEAD
commit msg: Linux 4.14.237
crash: unregister_netdevice: waiting for DEV to become free
Bluetooth: hci0 command 0x0409 tx timeout
Bluetooth: hci1 command 0x0409 tx timeout
Bluetooth: hci3 command 0x0409 tx timeout
Bluetooth: hci2 command 0x0409 tx timeout
Bluetooth: hci5 command 0x0409 tx timeout
unregister_netdevice: waiting for ip6gre0 to become free. Usage count = -1
Bluetooth: hci0 command 0x041b tx timeout
Bluetooth: hci4 command 0x041b tx timeout
Bluetooth: hci5 command 0x041b tx timeout
Bluetooth: hci2 command 0x041b tx timeout
Bluetooth: hci3 command 0x041b tx timeout
Bluetooth: hci1 command 0x041b tx timeout
Bluetooth: hci4 command 0x040f tx timeout
Bluetooth: hci0 command 0x040f tx timeout
Bluetooth: hci1 command 0x040f tx timeout
Bluetooth: hci3 command 0x040f tx timeout
Bluetooth: hci2 command 0x040f tx timeout
Bluetooth: hci5 command 0x040f tx timeout
Bluetooth: hci0 command 0x0419 tx timeout
Bluetooth: hci4 command 0x0419 tx timeout
Bluetooth: hci5 command 0x0419 tx timeout
Bluetooth: hci2 command 0x0419 tx timeout
Bluetooth: hci3 command 0x0419 tx timeout
Bluetooth: hci1 command 0x0419 tx timeout