bisecting fixing commit since cbfa1702aaf69b2311ea1b35e04f113c48368c67 building syzkaller on 5abc3f1ab298244473b613c289f1536e366fcf04 testing commit cbfa1702aaf69b2311ea1b35e04f113c48368c67 compiler: gcc version 8.4.1 20210217 (GCC) kernel signature: eeb53e55214bfad61ede6d2f768a4e42afef9e2edd6b2442087101619b6eafeb run #0: crashed: general protection fault in diFree run #1: crashed: general protection fault in diFree run #2: crashed: KASAN: use-after-free Read in diFree run #3: crashed: general protection fault in corrupted run #4: crashed: general protection fault in diFree run #5: crashed: general protection fault in diFree run #6: crashed: KASAN: use-after-free Read in diFree run #7: crashed: general protection fault in diFree run #8: crashed: KASAN: use-after-free Read in diFree run #9: crashed: KASAN: use-after-free Read in diFree run #10: crashed: KASAN: use-after-free Read in diFree run #11: crashed: KASAN: use-after-free Read in diFree run #12: crashed: general protection fault in diFree run #13: crashed: general protection fault in diFree run #14: crashed: KASAN: use-after-free Read in diFree run #15: crashed: general protection fault in diFree run #16: crashed: KASAN: use-after-free Read in diFree run #17: crashed: KASAN: use-after-free Read in diFree run #18: crashed: KASAN: use-after-free Read in diFree run #19: crashed: KASAN: use-after-free Read in diFree testing current HEAD 8ee0807eedf3bc60c8a47a7dd95387102bcfd063 testing commit 8ee0807eedf3bc60c8a47a7dd95387102bcfd063 compiler: gcc version 8.4.1 20210217 (GCC) kernel signature: 8276ad1243947ce33a6a1e9382dc180b8ab5032c3a47ab9413414d391415775c all runs: crashed: unregister_netdevice: waiting for DEV to become free revisions tested: 2, total time: 33m27.754001084s (build: 26m19.069555086s, test: 6m30.063541871s) the crash still happens on HEAD commit msg: Linux 4.14.259 crash: unregister_netdevice: waiting for DEV to become free can: request_module (can-proto-0) failed. can: request_module (can-proto-0) failed. unregister_netdevice: waiting for ip6gre0 to become free. Usage count = -1 Bluetooth: hci1 command 0x0409 tx timeout Bluetooth: hci5 command 0x0409 tx timeout Bluetooth: hci0 command 0x0409 tx timeout Bluetooth: hci4 command 0x0409 tx timeout Bluetooth: hci3 command 0x0409 tx timeout Bluetooth: hci2 command 0x0409 tx timeout Bluetooth: hci2 command 0x041b tx timeout Bluetooth: hci4 command 0x041b tx timeout Bluetooth: hci0 command 0x041b tx timeout Bluetooth: hci3 command 0x041b tx timeout Bluetooth: hci5 command 0x041b tx timeout Bluetooth: hci1 command 0x041b tx timeout Bluetooth: hci1 command 0x040f tx timeout Bluetooth: hci5 command 0x040f tx timeout Bluetooth: hci3 command 0x040f tx timeout Bluetooth: hci0 command 0x040f tx timeout Bluetooth: hci2 command 0x040f tx timeout Bluetooth: hci4 command 0x040f tx timeout Bluetooth: hci4 command 0x0419 tx timeout Bluetooth: hci2 command 0x0419 tx timeout Bluetooth: hci0 command 0x0419 tx timeout Bluetooth: hci3 command 0x0419 tx timeout Bluetooth: hci5 command 0x0419 tx timeout Bluetooth: hci1 command 0x0419 tx timeout