bisecting fixing commit since 7d7d1c0ab3eb7c8d8f63a126535018007823b207
building syzkaller on 06c27ff56b460864b5195bc0668d1d582df3cbf8
testing commit 7d7d1c0ab3eb7c8d8f63a126535018007823b207 with gcc (GCC) 8.4.1 20210217
kernel signature: 7c21ecfbc8325c37e408f15b914e8c183938262ca16acaa25e085bf81113caf7
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: 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 a6b2dae3ee3a3f9f4db3fab5b4b9e493fecf4acd
testing commit a6b2dae3ee3a3f9f4db3fab5b4b9e493fecf4acd with gcc (GCC) 8.4.1 20210217
kernel signature: ccaa25ca284c0ab9e3a50ffbafd04072b8f21135dc6840eda315e6c3539a4de3
all runs: crashed: unregister_netdevice: waiting for DEV to become free
revisions tested: 2, total time: 30m31.791324481s (build: 15m26.464434863s, test: 14m39.532850541s)
the crash still happens on HEAD
commit msg: Linux 4.14.235
crash: unregister_netdevice: waiting for DEV to become free
unregister_netdevice: waiting for ip6gre0 to become free. Usage count = -1
Bluetooth: hci5 command 0x0409 tx timeout
Bluetooth: hci3 command 0x0409 tx timeout
Bluetooth: hci4 command 0x0409 tx timeout
Bluetooth: hci2 command 0x0409 tx timeout
Bluetooth: hci1 command 0x0409 tx timeout
Bluetooth: hci0 command 0x0409 tx timeout
Bluetooth: hci3 command 0x041b tx timeout
Bluetooth: hci0 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: hci0 command 0x040f tx timeout
Bluetooth: hci3 command 0x040f tx timeout
Bluetooth: hci3 command 0x0419 tx timeout
Bluetooth: hci0 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