bisecting fixing commit since 397a88b2cc869c823bf40bc403d36a62afec1edd
building syzkaller on e4b4d570a88c0d2e0420c6e21fc20d90564636b1
testing commit 397a88b2cc869c823bf40bc403d36a62afec1edd
compiler: gcc version 8.4.1 20210217 (GCC)
kernel signature: 4bcffbc6454d195e2b660d93ab92fd2ae51555060c12af8b39d979d113cafd0b
run #0: crashed: KASAN: use-after-free Read in rht_deferred_worker
run #1: crashed: KASAN: use-after-free Read in rht_deferred_worker
run #2: OK
run #3: OK
run #4: OK
run #5: OK
run #6: OK
run #7: OK
run #8: OK
run #9: OK
run #10: OK
run #11: OK
run #12: crashed: KASAN: use-after-free Read in rht_deferred_worker
run #13: OK
run #14: OK
run #15: OK
run #16: OK
run #17: OK
run #18: OK
run #19: OK
reproducer seems to be flaky
testing current HEAD 0447aa205abe1c0c016b4f7fa9d7c08d920b5c8e
testing commit 0447aa205abe1c0c016b4f7fa9d7c08d920b5c8e
compiler: gcc version 8.4.1 20210217 (GCC)
kernel signature: 9814ebb2b23273bc90cc266b47f25d350e7546a8627d3856b51666f36ae76369
all runs: crashed: unregister_netdevice: waiting for DEV to become free
Reproducer flagged being flaky
revisions tested: 2, total time: 32m47.603320314s (build: 16m59.780756142s, test: 15m15.305633739s)
the crash still happens on HEAD
commit msg: Linux 4.14.254
crash: unregister_netdevice: waiting for DEV to become free
Bluetooth: hci2 command 0x0409 tx timeout
Bluetooth: hci5 command 0x0409 tx timeout
Bluetooth: hci1 command 0x0409 tx timeout
Bluetooth: hci0 command 0x0409 tx timeout
Bluetooth: hci3 command 0x0409 tx timeout
unregister_netdevice: waiting for ip6gre0 to become free. Usage count = -1
Bluetooth: hci4 command 0x041b tx timeout
Bluetooth: hci0 command 0x041b tx timeout
Bluetooth: hci1 command 0x041b tx timeout
Bluetooth: hci5 command 0x041b tx timeout
Bluetooth: hci2 command 0x041b tx timeout
Bluetooth: hci3 command 0x041b tx timeout
Bluetooth: hci2 command 0x040f tx timeout
Bluetooth: hci5 command 0x040f tx timeout
Bluetooth: hci1 command 0x040f tx timeout
Bluetooth: hci4 command 0x040f tx timeout
Bluetooth: hci0 command 0x040f tx timeout
Bluetooth: hci3 command 0x040f tx timeout
Bluetooth: hci0 command 0x0419 tx timeout
Bluetooth: hci4 command 0x0419 tx timeout
Bluetooth: hci1 command 0x0419 tx timeout
Bluetooth: hci5 command 0x0419 tx timeout
Bluetooth: hci2 command 0x0419 tx timeout
Bluetooth: hci3 command 0x0419 tx timeout