bisecting fixing commit since cf256fbcbe347b7d0ff58fe2dfa382a156bd3694 building syzkaller on c0ced5570c6505a80235b64884c93e89733b77f3 testing commit cf256fbcbe347b7d0ff58fe2dfa382a156bd3694 compiler: gcc version 8.4.1 20210217 (GCC) kernel signature: d6f8226c9f8e31598b3f7bf6e3c859e28e70068f38c28c77b0d7bcb103139b05 run #0: crashed: BUG: soft lockup in mgmt_set_connectable_complete run #1: crashed: BUG: soft lockup in mgmt_set_connectable_complete run #2: crashed: BUG: soft lockup in mgmt_set_connectable_complete run #3: crashed: BUG: soft lockup in mgmt_set_connectable_complete run #4: crashed: BUG: soft lockup in mgmt_set_connectable_complete run #5: crashed: BUG: soft lockup in mgmt_set_connectable_complete run #6: crashed: BUG: soft lockup in mgmt_set_connectable_complete run #7: crashed: BUG: soft lockup in socket run #8: crashed: BUG: soft lockup in mgmt_set_connectable_complete run #9: crashed: BUG: soft lockup in mgmt_set_connectable_complete run #10: crashed: BUG: soft lockup in mgmt_set_connectable_complete run #11: crashed: BUG: soft lockup in hci_sock_release run #12: crashed: BUG: soft lockup in socket run #13: crashed: BUG: soft lockup in mgmt_set_connectable_complete run #14: crashed: BUG: soft lockup in hci_sock_release run #15: crashed: BUG: soft lockup in hci_sock_release run #16: crashed: BUG: soft lockup in mgmt_set_connectable_complete run #17: crashed: BUG: soft lockup in mgmt_set_connectable_complete run #18: crashed: BUG: soft lockup in hci_sock_release run #19: crashed: BUG: soft lockup in mgmt_set_connectable_complete testing current HEAD 21ad423fe5210f5aa50bd43f9ae99b655090a227 testing commit 21ad423fe5210f5aa50bd43f9ae99b655090a227 compiler: gcc version 8.4.1 20210217 (GCC) kernel signature: 91c5278e1d794b4e4e465ab382cdf5ff837b30d94c5b047897b2806628101044 all runs: crashed: unregister_netdevice: waiting for DEV to become free revisions tested: 2, total time: 26m26.038274305s (build: 18m45.805975211s, test: 6m54.416390661s) the crash still happens on HEAD commit msg: Linux 4.14.265 crash: unregister_netdevice: waiting for DEV to become free Bluetooth: hci2 command 0x0409 tx timeout Bluetooth: hci4 command 0x0409 tx timeout Bluetooth: hci0 command 0x0409 tx timeout unregister_netdevice: waiting for ip6gre0 to become free. Usage count = -1 Bluetooth: hci3 command 0x0409 tx timeout Bluetooth: hci5 command 0x0409 tx timeout Bluetooth: hci1 command 0x0409 tx timeout Bluetooth: hci4 command 0x041b tx timeout Bluetooth: hci2 command 0x041b tx timeout Bluetooth: hci1 command 0x041b tx timeout Bluetooth: hci5 command 0x041b tx timeout Bluetooth: hci3 command 0x041b tx timeout Bluetooth: hci0 command 0x041b tx timeout Bluetooth: hci2 command 0x040f tx timeout Bluetooth: hci4 command 0x040f tx timeout Bluetooth: hci0 command 0x040f tx timeout Bluetooth: hci3 command 0x040f tx timeout Bluetooth: hci5 command 0x040f tx timeout Bluetooth: hci1 command 0x040f tx timeout Bluetooth: hci4 command 0x0419 tx timeout Bluetooth: hci2 command 0x0419 tx timeout Bluetooth: hci1 command 0x0419 tx timeout Bluetooth: hci5 command 0x0419 tx timeout Bluetooth: hci3 command 0x0419 tx timeout Bluetooth: hci0 command 0x0419 tx timeout