bisecting fixing commit since 397a88b2cc869c823bf40bc403d36a62afec1edd
building syzkaller on e4b4d570a88c0d2e0420c6e21fc20d90564636b1
testing commit 397a88b2cc869c823bf40bc403d36a62afec1edd with gcc (GCC) 8.4.1 20210217
kernel signature: 5a21306b8bdaad2ea7e4cb6dd169de29f5833035b3c3f3138a60676f3a69358b
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: crashed: KASAN: use-after-free Read in rht_deferred_worker
run #3: OK
run #4: OK
run #5: OK
run #6: OK
run #7: crashed: KASAN: use-after-free Read in rht_deferred_worker
run #8: OK
run #9: OK
run #10: OK
run #11: OK
run #12: OK
run #13: OK
run #14: OK
run #15: crashed: KASAN: use-after-free Read in rht_deferred_worker
run #16: crashed: KASAN: use-after-free Read in rht_deferred_worker
run #17: crashed: KASAN: use-after-free Read in rht_deferred_worker
run #18: OK
run #19: OK
reproducer seems to be flaky
testing current HEAD a6b2dae3ee3a3f9f4db3fab5b4b9e493fecf4acd
testing commit a6b2dae3ee3a3f9f4db3fab5b4b9e493fecf4acd with gcc (GCC) 8.4.1 20210217
kernel signature: 43c121db0d9986ae98107d831f6c9441faf0549548da57dfb846843415c3f7fb
all runs: crashed: unregister_netdevice: waiting for DEV to become free
Reproducer flagged being flaky
revisions tested: 2, total time: 33m56.142468887s (build: 18m26.93168532s, test: 14m58.279566307s)
the crash still happens on HEAD
commit msg: Linux 4.14.235
crash: unregister_netdevice: waiting for DEV to become free
Bluetooth: hci0 command 0x0409 tx timeout
Bluetooth: hci2 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: hci3 command 0x041b tx timeout
Bluetooth: hci1 command 0x041b tx timeout
Bluetooth: hci2 command 0x041b tx timeout
Bluetooth: hci0 command 0x041b tx timeout
Bluetooth: hci4 command 0x041b tx timeout
Bluetooth: hci5 command 0x041b tx timeout
Bluetooth: hci0 command 0x040f tx timeout
Bluetooth: hci1 command 0x040f tx timeout
Bluetooth: hci2 command 0x040f tx timeout
Bluetooth: hci3 command 0x040f tx timeout
Bluetooth: hci5 command 0x040f tx timeout
Bluetooth: hci4 command 0x040f tx timeout
Bluetooth: hci1 command 0x0419 tx timeout
Bluetooth: hci3 command 0x0419 tx timeout
Bluetooth: hci2 command 0x0419 tx timeout
Bluetooth: hci0 command 0x0419 tx timeout
Bluetooth: hci4 command 0x0419 tx timeout
Bluetooth: hci5 command 0x0419 tx timeout