bisecting fixing commit since 958e517f4e16952e9a2e2d58fd32d28ae4e23dda
building syzkaller on fcdb12ba70875c410749932abf39160d19c753d9
testing commit 958e517f4e16952e9a2e2d58fd32d28ae4e23dda
compiler: gcc version 8.4.1 20210217 (GCC)
kernel signature: 6bd8cbf6977893163bc75563296143c567538aaa8693353507e1b82245d1cf69
run #0: crashed: KASAN: use-after-free Read in tasklet_action
run #1: crashed: KASAN: use-after-free Read in tasklet_action
run #2: crashed: KASAN: use-after-free Read in tasklet_action
run #3: crashed: KASAN: use-after-free Read in tasklet_action
run #4: crashed: KASAN: use-after-free Read in tasklet_action
run #5: crashed: KASAN: use-after-free Read in tasklet_action
run #6: crashed: KASAN: use-after-free Read in tasklet_action
run #7: crashed: KASAN: use-after-free Read in tasklet_action
run #8: crashed: KASAN: use-after-free Read in tasklet_action
run #9: crashed: KASAN: use-after-free Read in tasklet_action
run #10: crashed: KASAN: use-after-free Read in tasklet_action
run #11: crashed: KASAN: use-after-free Read in tasklet_action
run #12: crashed: KASAN: use-after-free Read in tasklet_action
run #13: crashed: KASAN: use-after-free Read in tasklet_action
run #14: crashed: KASAN: use-after-free Read in tasklet_action
run #15: crashed: KASAN: use-after-free Read in tasklet_action
run #16: crashed: KASAN: use-after-free Read in tasklet_action
run #17: crashed: KASAN: use-after-free Read in bcm_can_tx
run #18: OK
run #19: OK
testing current HEAD 0447aa205abe1c0c016b4f7fa9d7c08d920b5c8e
testing commit 0447aa205abe1c0c016b4f7fa9d7c08d920b5c8e
compiler: gcc version 8.4.1 20210217 (GCC)
kernel signature: af130f40f2d7d71c316450a6f415b11cb25f02b60d2eccf8202fbcdae93171ec
all runs: crashed: unregister_netdevice: waiting for DEV to become free
revisions tested: 2, total time: 30m36.12110501s (build: 15m12.163046604s, test: 14m56.431268874s)
the crash still happens on HEAD
commit msg: Linux 4.14.254
crash: unregister_netdevice: waiting for DEV to become free
Bluetooth: hci3 command 0x0409 tx timeout
Bluetooth: hci0 command 0x0409 tx timeout
Bluetooth: hci1 command 0x0409 tx timeout
Bluetooth: hci5 command 0x0409 tx timeout
Bluetooth: hci4 command 0x0409 tx timeout
unregister_netdevice: waiting for ip6gre0 to become free. Usage count = -1
Bluetooth: hci2 command 0x0409 tx timeout
Bluetooth: hci2 command 0x041b tx timeout
Bluetooth: hci1 command 0x041b tx timeout
Bluetooth: hci4 command 0x041b tx timeout
Bluetooth: hci3 command 0x041b tx timeout
Bluetooth: hci5 command 0x041b tx timeout
Bluetooth: hci0 command 0x041b tx timeout
Bluetooth: hci0 command 0x040f tx timeout
Bluetooth: hci3 command 0x040f 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: hci1 command 0x0419 tx timeout
Bluetooth: hci2 command 0x0419 tx timeout
Bluetooth: hci4 command 0x0419 tx timeout
Bluetooth: hci5 command 0x0419 tx timeout
Bluetooth: hci3 command 0x0419 tx timeout
Bluetooth: hci0 command 0x0419 tx timeout