bisecting fixing commit since ca4f2c56d4162a4a5236f2099b55453fb98296f9
building syzkaller on 0487ea6f5d997a8363eba0d2eb0ea7a925444555
testing commit ca4f2c56d4162a4a5236f2099b55453fb98296f9
compiler: gcc version 8.4.1 20210217 (GCC)
kernel signature: 7fe09c00a0eef7a659cdea865b4099fd8b562d262f0657fc8525586442f7e938
all runs: crashed: KASAN: use-after-free Read in hci_send_acl
testing current HEAD 8ee0807eedf3bc60c8a47a7dd95387102bcfd063
testing commit 8ee0807eedf3bc60c8a47a7dd95387102bcfd063
compiler: gcc version 8.4.1 20210217 (GCC)
kernel signature: e3916de48efaf77aeb62133a257ac03a904498d1d7a98996764048ccd374c754
all runs: crashed: unregister_netdevice: waiting for DEV to become free
revisions tested: 2, total time: 29m34.054456125s (build: 22m26.776021115s, test: 6m32.933038993s)
the crash still happens on HEAD
commit msg: Linux 4.14.259
crash: unregister_netdevice: waiting for DEV to become free
unregister_netdevice: waiting for ip6gre0 to become free. Usage count = -1