bisecting fixing commit since cbfa1702aaf69b2311ea1b35e04f113c48368c67
building syzkaller on 6bfdbe8950b22b1c832478bd397754f3108df040
testing commit cbfa1702aaf69b2311ea1b35e04f113c48368c67
compiler: gcc version 8.4.1 20210217 (GCC)
kernel signature: 0e1c563ada2bac1a2b4ba6a845b0ce91b7a12cb113d1babdac55b0fcbb6235ce
all runs: crashed: KASAN: use-after-free Read in hci_chan_del
testing current HEAD b8f3be299d5176348b15cc59d55b85faa3dece68
testing commit b8f3be299d5176348b15cc59d55b85faa3dece68
compiler: gcc version 8.4.1 20210217 (GCC)
kernel signature: 064fce8a99d35847763f3de4f54afa342f06a537a94f36c24f36623fb92e26d2
all runs: crashed: unregister_netdevice: waiting for DEV to become free
revisions tested: 2, total time: 24m40.631802047s (build: 17m57.203888835s, test: 6m5.170158439s)
the crash still happens on HEAD
commit msg: Linux 4.14.282
crash: unregister_netdevice: waiting for DEV to become free
Bluetooth: hci0 command 0x0409 tx timeout
unregister_netdevice: waiting for ip6gre0 to become free. Usage count = -1
Bluetooth: hci0 command 0x041b tx timeout
Bluetooth: hci0 command 0x040f tx timeout
Bluetooth: hci0 command 0x0419 tx timeout