[ OK ] Reached target Graphical Interface. Starting Update UTMP about System Runlevel Changes... Starting Load/Save RF Kill Switch Status... [ OK ] Started Update UTMP about System Runlevel Changes. [ OK ] Started Load/Save RF Kill Switch Status. Debian GNU/Linux 9 syzkaller ttyS0 Warning: Permanently added '10.128.0.27' (ECDSA) to the list of known hosts. syzkaller login: [ 74.129414][ T28] audit: type=1400 audit(1596681473.776:8): avc: denied { execmem } for pid=6853 comm="syz-executor617" scontext=system_u:system_r:kernel_t:s0 tcontext=system_u:system_r:kernel_t:s0 tclass=process permissive=1 [ 74.143760][ T6854] IPVS: ftp: loaded support on port[0] = 21 executing program [ 77.303134][ T2711] Bluetooth: hci0: command 0x0409 tx timeout [ 79.382844][ T2522] Bluetooth: hci0: command 0x041b tx timeout [ 80.266010][ T6883] ------------[ cut here ]------------ [ 80.271714][ T6883] ODEBUG: assert_init not available (active state 0) object type: timer_list hint: 0x0 [ 80.281596][ T6883] WARNING: CPU: 0 PID: 6883 at lib/debugobjects.c:485 debug_print_object+0x160/0x250 [ 80.291029][ T6883] Kernel panic - not syncing: panic_on_warn set ... [ 80.297597][ T6883] CPU: 0 PID: 6883 Comm: syz-executor617 Not tainted 5.8.0-syzkaller #0 [ 80.305947][ T6883] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 80.315979][ T6883] Call Trace: [ 80.319252][ T6883] dump_stack+0x18f/0x20d [ 80.323568][ T6883] panic+0x2e3/0x75c [ 80.327445][ T6883] ? __warn_printk+0xf3/0xf3 [ 80.332028][ T6883] ? console_unlock+0x7f0/0xf30 [ 80.336858][ T6883] ? __warn.cold+0x5/0x45 [ 80.341173][ T6883] ? __warn+0xd6/0x1f2 [ 80.345240][ T6883] ? debug_print_object+0x160/0x250 [ 80.350416][ T6883] __warn.cold+0x20/0x45 [ 80.354639][ T6883] ? debug_print_object+0x160/0x250 [ 80.359819][ T6883] report_bug+0x1bd/0x210 [ 80.364148][ T6883] handle_bug+0x38/0x90 [ 80.368310][ T6883] ? __warn_printk+0xc6/0xf3 [ 80.372903][ T6883] exc_invalid_op+0x14/0x40 [ 80.377413][ T6883] asm_exc_invalid_op+0x12/0x20 [ 80.382277][ T6883] RIP: 0010:debug_print_object+0x160/0x250 [ 80.388085][ T6883] Code: dd 00 b8 93 88 48 89 fa 48 c1 ea 03 80 3c 02 00 0f 85 bf 00 00 00 48 8b 14 dd 00 b8 93 88 48 c7 c7 60 ad 93 88 e8 d2 5f a9 fd <0f> 0b 83 05 83 ec 13 07 01 48 83 c4 20 5b 5d 41 5c 41 5d c3 48 89 [ 80.407693][ T6883] RSP: 0018:ffffc900055c7570 EFLAGS: 00010086 [ 80.413760][ T6883] RAX: 0000000000000000 RBX: 0000000000000005 RCX: 0000000000000000 [ 80.421734][ T6883] RDX: ffff88809f70e300 RSI: ffffffff815d8ea7 RDI: fffff52000ab8ea0 [ 80.429714][ T6883] RBP: 0000000000000001 R08: 0000000000000001 R09: ffff8880ae620fcb [ 80.438106][ T6883] R10: 0000000000000000 R11: 0000000038383654 R12: ffffffff89bce120 [ 80.446171][ T6883] R13: ffffffff81636650 R14: ffff888099a1a200 R15: 1ffff92000ab8eb9 [ 80.454157][ T6883] ? calc_wheel_index+0x3f0/0x3f0 [ 80.460565][ T6883] ? vprintk_func+0x97/0x1a6 [ 80.465260][ T6883] debug_object_assert_init+0x1f4/0x2e0 [ 80.470804][ T6883] ? find_held_lock+0x2d/0x110 [ 80.475549][ T6883] ? debug_object_init_on_stack+0x20/0x20 [ 80.481335][ T6883] ? __queue_work+0x61a/0xf20 [ 80.486256][ T6883] ? lock_downgrade+0x830/0x830 [ 80.491097][ T6883] del_timer+0x6d/0x110 [ 80.495251][ T6883] ? detach_if_pending+0x4d0/0x4d0 [ 80.500359][ T6883] ? __queue_work+0x63c/0xf20 [ 80.505018][ T6883] ? lockdep_hardirqs_off+0x89/0xc0 [ 80.510192][ T6883] ? trace_hardirqs_off+0x76/0x210 [ 80.515304][ T6883] cancel_delayed_work+0xe0/0x450 [ 80.520323][ T6883] ? mod_delayed_work_on+0x2e0/0x2e0 [ 80.525613][ T6883] ? lockdep_hardirqs_on+0x76/0xf0 [ 80.530703][ T6883] ? queue_delayed_work_on+0x12f/0x210 [ 80.536214][ T6883] l2cap_chan_del+0x541/0x1300 [ 80.540958][ T6883] l2cap_chan_close+0x118/0xb10 [ 80.545852][ T6883] ? l2cap_retransmit_all+0x760/0x760 [ 80.551201][ T6883] ? __mutex_unlock_slowpath+0xe2/0x610 [ 80.556728][ T6883] ? mark_held_locks+0x9f/0xe0 [ 80.561468][ T6883] ? wait_for_completion+0x260/0x260 [ 80.566730][ T6883] ? lockdep_hardirqs_on_prepare+0x354/0x530 [ 80.572689][ T6883] ? l2cap_sock_shutdown+0x2c4/0xe90 [ 80.577950][ T6883] ? trace_hardirqs_on+0x5f/0x220 [ 80.582964][ T6883] l2cap_sock_shutdown+0x3b8/0xe90 [ 80.588072][ T6883] ? lock_acquire+0x1f1/0xad0 [ 80.592755][ T6883] ? bt_sock_unlink+0x1d/0x1c0 [ 80.597532][ T6883] ? l2cap_sock_suspend_cb+0x80/0x80 [ 80.602797][ T6883] ? find_held_lock+0x2d/0x110 [ 80.607545][ T6883] ? l2cap_sock_release+0x56/0x1d0 [ 80.612684][ T6883] ? lock_downgrade+0x830/0x830 [ 80.617556][ T6883] ? do_raw_read_unlock+0x70/0x70 [ 80.622567][ T6883] ? __sock_release+0x280/0x280 [ 80.627420][ T6883] l2cap_sock_release+0x63/0x1d0 [ 80.632346][ T6883] ? __sock_release+0x280/0x280 [ 80.637204][ T6883] __sock_release+0xcd/0x280 [ 80.641772][ T6883] sock_close+0x18/0x20 [ 80.645905][ T6883] __fput+0x33c/0x880 [ 80.649867][ T6883] task_work_run+0xdd/0x190 [ 80.654350][ T6883] do_exit+0xb7d/0x29f0 [ 80.658481][ T6883] ? lock_acquire+0x1f1/0xad0 [ 80.663135][ T6883] ? find_held_lock+0x2d/0x110 [ 80.667876][ T6883] ? mm_update_next_owner+0x7a0/0x7a0 [ 80.673221][ T6883] ? get_signal+0x332/0x1ee0 [ 80.677787][ T6883] ? lock_downgrade+0x830/0x830 [ 80.682614][ T6883] ? lock_is_held_type+0xbb/0xf0 [ 80.687531][ T6883] do_group_exit+0x125/0x310 [ 80.692115][ T6883] get_signal+0x40b/0x1ee0 [ 80.696524][ T6883] ? lockdep_hardirqs_on+0x76/0xf0 [ 80.701631][ T6883] ? __local_bh_enable_ip+0xd1/0x190 [ 80.706910][ T6883] ? l2cap_sock_connect+0x379/0x690 [ 80.712089][ T6883] arch_do_signal+0x82/0x2520 [ 80.716759][ T6883] ? l2cap_sock_recv_cb+0x1e0/0x1e0 [ 80.721958][ T6883] ? __sys_connect_file+0x4e/0x1a0 [ 80.727059][ T6883] ? copy_siginfo_to_user32+0xa0/0xa0 [ 80.732505][ T6883] ? __sys_connect+0x109/0x190 [ 80.737258][ T6883] ? __sys_connect_file+0x1a0/0x1a0 [ 80.742451][ T6883] ? exit_to_user_mode_prepare+0xce/0x1d0 [ 80.748150][ T6883] ? lockdep_hardirqs_on_prepare+0x354/0x530 [ 80.754111][ T6883] exit_to_user_mode_prepare+0x172/0x1d0 [ 80.759723][ T6883] syscall_exit_to_user_mode+0x59/0x2b0 [ 80.765268][ T6883] entry_SYSCALL_64_after_hwframe+0x44/0xa9 [ 80.771165][ T6883] RIP: 0033:0x446d89 [ 80.775119][ T6883] Code: Bad RIP value. [ 80.779162][ T6883] RSP: 002b:00007ffc86007d38 EFLAGS: 00000246 ORIG_RAX: 000000000000002a [ 80.787549][ T6883] RAX: fffffffffffffffc RBX: 0000000000000003 RCX: 0000000000446d89 [ 80.795499][ T6883] RDX: 0000000000000080 RSI: 00000000200000c0 RDI: 0000000000000004 [ 80.803448][ T6883] RBP: 00007ffc86007d70 R08: 0000000000000000 R09: 00000000000000ff [ 80.811397][ T6883] R10: 0000000000000004 R11: 0000000000000246 R12: 0000000000000004 [ 80.819344][ T6883] R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000 [ 80.828810][ T6883] Kernel Offset: disabled [ 80.833209][ T6883] Rebooting in 86400 seconds..