bisecting fixing commit since 397a88b2cc869c823bf40bc403d36a62afec1edd
building syzkaller on e4b4d570a88c0d2e0420c6e21fc20d90564636b1
testing commit 397a88b2cc869c823bf40bc403d36a62afec1edd with gcc (GCC) 8.4.1 20210217
kernel signature: cbfa0f2952b42568172ecac26ce4406a2a715eed3be8f18a1f938894b61adbdb
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: crashed: KASAN: use-after-free Read in rht_deferred_worker
run #4: crashed: KASAN: use-after-free Read in rht_deferred_worker
run #5: crashed: KASAN: use-after-free Read in rht_deferred_worker
run #6: crashed: KASAN: use-after-free Read in rht_deferred_worker
run #7: OK
run #8: OK
run #9: crashed: KASAN: use-after-free Read in rht_deferred_worker
run #10: OK
run #11: OK
run #12: OK
run #13: crashed: KASAN: use-after-free Read in rht_deferred_worker
run #14: crashed: KASAN: use-after-free Read in rht_deferred_worker
run #15: crashed: KASAN: use-after-free Read in rht_deferred_worker
run #16: OK
run #17: OK
run #18: OK
run #19: OK
testing current HEAD 313e82bbefb3d1d926858b58092f5d50f41d924d
testing commit 313e82bbefb3d1d926858b58092f5d50f41d924d with gcc (GCC) 8.4.1 20210217
kernel signature: 546c2e0b54c34295b0e22b14317cdcf5045dfe6efa4741d04207d07e4ee68df9
all runs: crashed: unregister_netdevice: waiting for DEV to become free
revisions tested: 2, total time: 29m46.371459462s (build: 14m50.089935448s, test: 14m28.666151388s)
the crash still happens on HEAD
commit msg: Linux 4.14.238
crash: unregister_netdevice: waiting for DEV to become free
Bluetooth: hci5 command 0x0409 tx timeout
Bluetooth: hci2 command 0x0409 tx timeout
Bluetooth: hci4 command 0x0409 tx timeout
Bluetooth: hci3 command 0x0409 tx timeout
Bluetooth: hci1 command 0x0409 tx timeout
unregister_netdevice: waiting for ip6gre0 to become free. Usage count = -1
Bluetooth: hci0 command 0x041b tx timeout
Bluetooth: hci1 command 0x041b tx timeout
Bluetooth: hci3 command 0x041b tx timeout
Bluetooth: hci4 command 0x041b tx timeout
Bluetooth: hci2 command 0x041b tx timeout
Bluetooth: hci5 command 0x041b tx timeout
Bluetooth: hci0 command 0x040f tx timeout
Bluetooth: hci5 command 0x040f tx timeout
Bluetooth: hci2 command 0x040f tx timeout
Bluetooth: hci4 command 0x040f tx timeout
Bluetooth: hci3 command 0x040f tx timeout
Bluetooth: hci1 command 0x040f tx timeout
Bluetooth: hci0 command 0x0419 tx timeout
Bluetooth: hci1 command 0x0419 tx timeout
Bluetooth: hci3 command 0x0419 tx timeout
Bluetooth: hci4 command 0x0419 tx timeout
Bluetooth: hci2 command 0x0419 tx timeout
Bluetooth: hci5 command 0x0419 tx timeout