bisecting fixing commit since bd634aa6416382439890b78f7be0023020a86207
building syzkaller on 6a81331a1d4c744da9204d02ec88d558f7eea9c9
testing commit bd634aa6416382439890b78f7be0023020a86207 with gcc (GCC) 8.4.1 20210217
kernel signature: fd25e0018002241cfd38330ac6952ffc4dedb63bdb86d025211a6a61be88fb6b
run #0: crashed: WARNING: locking bug in __sb_end_write
run #1: crashed: WARNING: locking bug in __sb_end_write
run #2: crashed: WARNING: locking bug in __sb_end_write
run #3: crashed: WARNING: locking bug in __sb_end_write
run #4: crashed: WARNING: locking bug in __sb_end_write
run #5: crashed: WARNING: locking bug in __sb_end_write
run #6: crashed: WARNING: locking bug in __sb_end_write
run #7: crashed: WARNING: locking bug in __sb_end_write
run #8: crashed: WARNING: locking bug in __sb_end_write
run #9: crashed: WARNING: locking bug in __sb_end_write
run #10: crashed: WARNING: locking bug in __sb_end_write
run #11: crashed: WARNING: locking bug in __sb_end_write
run #12: OK
run #13: OK
run #14: OK
run #15: OK
run #16: OK
run #17: OK
run #18: OK
run #19: OK
testing current HEAD 313e82bbefb3d1d926858b58092f5d50f41d924d
testing commit 313e82bbefb3d1d926858b58092f5d50f41d924d with gcc (GCC) 8.4.1 20210217
kernel signature: 2d800b375b1313818d71c0f97603155b40b657934f78943c85421d8e96f08c39
all runs: crashed: unregister_netdevice: waiting for DEV to become free
revisions tested: 2, total time: 27m44.379439414s (build: 15m26.097069581s, test: 11m57.198555869s)
the crash still happens on HEAD
commit msg: Linux 4.14.238
crash: unregister_netdevice: waiting for DEV to become free
Bluetooth: hci4 command 0x0409 tx timeout
Bluetooth: hci1 command 0x0409 tx timeout
Bluetooth: hci0 command 0x0409 tx timeout
Bluetooth: hci2 command 0x0409 tx timeout
Bluetooth: hci3 command 0x0409 tx timeout
unregister_netdevice: waiting for ip6gre0 to become free. Usage count = -1
Bluetooth: hci0 command 0x041b tx timeout
Bluetooth: hci3 command 0x041b tx timeout
Bluetooth: hci1 command 0x041b tx timeout
Bluetooth: hci2 command 0x041b tx timeout
Bluetooth: hci4 command 0x041b tx timeout
Bluetooth: hci5 command 0x041b tx timeout
Bluetooth: hci5 command 0x040f tx timeout
Bluetooth: hci4 command 0x040f tx timeout
Bluetooth: hci2 command 0x040f tx timeout
Bluetooth: hci1 command 0x040f tx timeout
Bluetooth: hci3 command 0x040f tx timeout
Bluetooth: hci0 command 0x040f tx timeout
Bluetooth: hci0 command 0x0419 tx timeout
Bluetooth: hci3 command 0x0419 tx timeout
Bluetooth: hci1 command 0x0419 tx timeout
Bluetooth: hci2 command 0x0419 tx timeout
Bluetooth: hci4 command 0x0419 tx timeout
Bluetooth: hci5 command 0x0419 tx timeout