bisecting fixing commit since 7d7d1c0ab3eb7c8d8f63a126535018007823b207
building syzkaller on 77e2b66864e69c17416614228723a1ebd3581ddc
testing commit 7d7d1c0ab3eb7c8d8f63a126535018007823b207 with gcc (GCC) 8.4.1 20210217
kernel signature: a23a9f28f132ba9f91ae40a99a433312276f263ff545390735cba988e0d69f34
run #0: crashed: KASAN: use-after-free Read in lbmIODone
run #1: crashed: KASAN: use-after-free Read in lbmIODone
run #2: crashed: KASAN: use-after-free Read in lbmIODone
run #3: crashed: KASAN: use-after-free Read in lbmIODone
run #4: crashed: KASAN: use-after-free Read in lbmIODone
run #5: crashed: KASAN: use-after-free Read in lbmIODone
run #6: crashed: KASAN: use-after-free Read in lbmIODone
run #7: crashed: KASAN: use-after-free Read in lbmIODone
run #8: crashed: KASAN: use-after-free Read in lbmIODone
run #9: crashed: KASAN: use-after-free Read in lbmIODone
run #10: crashed: KASAN: use-after-free Read in lbmIODone
run #11: crashed: KASAN: use-after-free Read in lbmIODone
run #12: crashed: KASAN: use-after-free Read in lbmIODone
run #13: crashed: KASAN: use-after-free Read in lbmIODone
run #14: crashed: KASAN: use-after-free Read in lbmIODone
run #15: crashed: KASAN: use-after-free Read in lbmIODone
run #16: crashed: KASAN: use-after-free Read in lbmIODone
run #17: crashed: KASAN: use-after-free Read in lbmIODone
run #18: crashed: KASAN: use-after-free Read in lbmIODone
run #19: OK
testing current HEAD 313e82bbefb3d1d926858b58092f5d50f41d924d
testing commit 313e82bbefb3d1d926858b58092f5d50f41d924d with gcc (GCC) 8.4.1 20210217
kernel signature: abdc87e2c25ee885e005eeda891489e518d3a879830dbde3e9eff7aaee1fbf3e
all runs: crashed: unregister_netdevice: waiting for DEV to become free
revisions tested: 2, total time: 29m52.508258821s (build: 15m6.298113591s, test: 14m24.984806007s)
the crash still happens on HEAD
commit msg: Linux 4.14.238
crash: unregister_netdevice: waiting for DEV to become free
unregister_netdevice: waiting for ip6gre0 to become free. Usage count = -1
Bluetooth: hci4 command 0x0409 tx timeout
Bluetooth: hci3 command 0x0409 tx timeout
Bluetooth: hci2 command 0x0409 tx timeout
Bluetooth: hci5 command 0x0409 tx timeout
Bluetooth: hci0 command 0x0409 tx timeout
Bluetooth: hci1 command 0x0409 tx timeout
Bluetooth: hci1 command 0x041b tx timeout
Bluetooth: hci0 command 0x041b tx timeout
Bluetooth: hci5 command 0x041b tx timeout
Bluetooth: hci2 command 0x041b tx timeout
Bluetooth: hci3 command 0x041b tx timeout
Bluetooth: hci4 command 0x041b tx timeout
Bluetooth: hci4 command 0x040f tx timeout
Bluetooth: hci3 command 0x040f tx timeout
Bluetooth: hci2 command 0x040f tx timeout
Bluetooth: hci5 command 0x040f tx timeout
Bluetooth: hci0 command 0x040f tx timeout
Bluetooth: hci1 command 0x040f tx timeout
Bluetooth: hci1 command 0x0419 tx timeout
Bluetooth: hci0 command 0x0419 tx timeout
Bluetooth: hci5 command 0x0419 tx timeout
Bluetooth: hci2 command 0x0419 tx timeout
Bluetooth: hci3 command 0x0419 tx timeout
Bluetooth: hci4 command 0x0419 tx timeout