bisecting fixing commit since 7d7d1c0ab3eb7c8d8f63a126535018007823b207
building syzkaller on 06c27ff56b460864b5195bc0668d1d582df3cbf8
testing commit 7d7d1c0ab3eb7c8d8f63a126535018007823b207
compiler: gcc version 8.4.1 20210217 (GCC)
kernel signature: 58928992dd6495078a55d5c9b27cf12521aac77f8d4d1ae951f8bcb61c6fe0cc
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: OK
run #10: OK
run #11: OK
run #12: OK
run #13: crashed: KASAN: use-after-free Read in ip_check_mc_rcu
run #14: OK
run #15: OK
run #16: crashed: KASAN: use-after-free Read in ip_check_mc_rcu
run #17: OK
run #18: OK
run #19: OK
testing current HEAD fa33f9094f36943ea32f7fbe323293b62e96151d
testing commit fa33f9094f36943ea32f7fbe323293b62e96151d
compiler: gcc version 8.4.1 20210217 (GCC)
kernel signature: 8866cd30607070af39964e2dee37b8c0dba2dfaee64a50f3ec7adc1914fc2419
all runs: crashed: unregister_netdevice: waiting for DEV to become free
revisions tested: 2, total time: 32m17.337458457s (build: 17m3.292525984s, test: 14m46.650335336s)
the crash still happens on HEAD
commit msg: Linux 4.14.268
crash: unregister_netdevice: waiting for DEV to become free
unregister_netdevice: waiting for ip6gre0 to become free. Usage count = -1
Bluetooth: hci0 command 0x0409 tx timeout
Bluetooth: hci2 command 0x0409 tx timeout
Bluetooth: hci5 command 0x0409 tx timeout
Bluetooth: hci1 command 0x0409 tx timeout
Bluetooth: hci4 command 0x0409 tx timeout
Bluetooth: hci3 command 0x0409 tx timeout
Bluetooth: hci1 command 0x041b tx timeout
Bluetooth: hci3 command 0x041b tx timeout
Bluetooth: hci4 command 0x041b tx timeout
Bluetooth: hci5 command 0x041b tx timeout
Bluetooth: hci0 command 0x041b tx timeout
Bluetooth: hci2 command 0x041b tx timeout
Bluetooth: hci5 command 0x040f tx timeout
Bluetooth: hci2 command 0x040f tx timeout
Bluetooth: hci0 command 0x040f tx timeout
Bluetooth: hci4 command 0x040f tx timeout
Bluetooth: hci3 command 0x040f tx timeout
Bluetooth: hci1 command 0x040f tx timeout
Bluetooth: hci1 command 0x0419 tx timeout
Bluetooth: hci3 command 0x0419 tx timeout
Bluetooth: hci4 command 0x0419 tx timeout
Bluetooth: hci0 command 0x0419 tx timeout
Bluetooth: hci5 command 0x0419 tx timeout
Bluetooth: hci2 command 0x0419 tx timeout