bisecting fixing commit since 7d7d1c0ab3eb7c8d8f63a126535018007823b207
building syzkaller on 06c27ff56b460864b5195bc0668d1d582df3cbf8
testing commit 7d7d1c0ab3eb7c8d8f63a126535018007823b207
compiler: gcc version 8.4.1 20210217 (GCC)
kernel signature: 278d1c682f4f4130b4db327d5dc67c76a0e074bd91306c0c4a8cf726ddb6e917
run #0: crashed: KASAN: use-after-free Read in ip_check_mc_rcu
run #1: crashed: KASAN: use-after-free Read in ip_check_mc_rcu
run #2: crashed: KASAN: use-after-free Read in ip_check_mc_rcu
run #3: crashed: KASAN: use-after-free Read in ip_check_mc_rcu
run #4: crashed: KASAN: use-after-free Read in ip_check_mc_rcu
run #5: crashed: KASAN: use-after-free Read in ip_check_mc_rcu
run #6: crashed: KASAN: use-after-free Read in ip_check_mc_rcu
run #7: crashed: KASAN: use-after-free Read in ip_check_mc_rcu
run #8: crashed: KASAN: use-after-free Read in ip_check_mc_rcu
run #9: crashed: KASAN: use-after-free Read in ip_check_mc_rcu
run #10: crashed: KASAN: use-after-free Read in ip_check_mc_rcu
run #11: crashed: KASAN: use-after-free Read in ip_check_mc_rcu
run #12: crashed: KASAN: use-after-free Read in ip_check_mc_rcu
run #13: OK
run #14: OK
run #15: OK
run #16: OK
run #17: OK
run #18: OK
run #19: OK
testing current HEAD ce4d1565392b2dc8ea33032615c934c3dc6a32bb
testing commit ce4d1565392b2dc8ea33032615c934c3dc6a32bb
compiler: gcc version 8.4.1 20210217 (GCC)
kernel signature: 2da5a5a3e85dce3f86cf54e82c7fba86bed982818bcba8a5dae09be86ce21601
all runs: crashed: unregister_netdevice: waiting for DEV to become free
revisions tested: 2, total time: 30m2.659296284s (build: 15m7.506292116s, test: 14m32.494462576s)
the crash still happens on HEAD
commit msg: Linux 4.14.241
crash: unregister_netdevice: waiting for DEV to become free
Bluetooth: hci0 command 0x0409 tx timeout
Bluetooth: hci1 command 0x0409 tx timeout
Bluetooth: hci2 command 0x0409 tx timeout
Bluetooth: hci4 command 0x0409 tx timeout
unregister_netdevice: waiting for ip6gre0 to become free. Usage count = -1
Bluetooth: hci5 command 0x0409 tx timeout
Bluetooth: hci3 command 0x0409 tx timeout
Bluetooth: hci0 command 0x041b tx timeout
Bluetooth: hci4 command 0x041b tx timeout
Bluetooth: hci2 command 0x041b tx timeout
Bluetooth: hci1 command 0x041b tx timeout
Bluetooth: hci3 command 0x041b tx timeout
Bluetooth: hci5 command 0x041b tx timeout
Bluetooth: hci0 command 0x040f tx timeout
Bluetooth: hci1 command 0x040f tx timeout
Bluetooth: hci2 command 0x040f tx timeout
Bluetooth: hci4 command 0x040f tx timeout
Bluetooth: hci5 command 0x040f tx timeout
Bluetooth: hci3 command 0x040f tx timeout
Bluetooth: hci0 command 0x0419 tx timeout
Bluetooth: hci4 command 0x0419 tx timeout
Bluetooth: hci2 command 0x0419 tx timeout
Bluetooth: hci1 command 0x0419 tx timeout
Bluetooth: hci3 command 0x0419 tx timeout
Bluetooth: hci5 command 0x0419 tx timeout
unregister_netdevice: waiting for ip6gre0 to become free. Usage count = -1