[ OK ] Reached target Login Prompts. [ OK ] Reached target Multi-User System. [ OK ] Reached target Graphical Interface. Starting Update UTMP about System Runlevel Changes... [ OK ] Started Update UTMP about System Runlevel Changes. Debian GNU/Linux 9 syzkaller ttyS0 Warning: Permanently added '10.128.0.132' (ECDSA) to the list of known hosts. syzkaller login: [ 75.559895][ T28] audit: type=1400 audit(1598138908.744:8): avc: denied { execmem } for pid=6869 comm="syz-executor291" scontext=system_u:system_r:kernel_t:s0 tcontext=system_u:system_r:kernel_t:s0 tclass=process permissive=1 [ 76.717996][ T6870] IPVS: ftp: loaded support on port[0] = 21 executing program [ 78.703989][ T17] Bluetooth: hci0: command 0x0409 tx timeout [ 80.783154][ T5] Bluetooth: hci0: command 0x041b tx timeout [ 81.811568][ T6902] ------------[ cut here ]------------ [ 81.817254][ T6902] ODEBUG: assert_init not available (active state 0) object type: timer_list hint: 0x0 [ 81.827149][ T6902] WARNING: CPU: 1 PID: 6902 at lib/debugobjects.c:485 debug_print_object+0x160/0x250 [ 81.836633][ T6902] Kernel panic - not syncing: panic_on_warn set ... [ 81.843207][ T6902] CPU: 1 PID: 6902 Comm: syz-executor291 Not tainted 5.9.0-rc1-syzkaller #0 [ 81.851867][ T6902] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 81.862017][ T6902] Call Trace: [ 81.865485][ T6902] dump_stack+0x18f/0x20d [ 81.869800][ T6902] panic+0x2e3/0x75c [ 81.873703][ T6902] ? __warn_printk+0xf3/0xf3 [ 81.878460][ T6902] ? console_unlock+0x7f0/0xf30 [ 81.883387][ T6902] ? __warn.cold+0x5/0x4a [ 81.887704][ T6902] ? __warn+0xd6/0x1f2 [ 81.891759][ T6902] ? debug_print_object+0x160/0x250 [ 81.896963][ T6902] __warn.cold+0x20/0x4a [ 81.901192][ T6902] ? debug_print_object+0x160/0x250 [ 81.906391][ T6902] report_bug+0x1bd/0x210 [ 81.910750][ T6902] handle_bug+0x38/0x90 [ 81.914900][ T6902] ? __warn_printk+0xc6/0xf3 [ 81.919487][ T6902] exc_invalid_op+0x14/0x40 [ 81.923975][ T6902] asm_exc_invalid_op+0x12/0x20 [ 81.928850][ T6902] RIP: 0010:debug_print_object+0x160/0x250 [ 81.934631][ T6902] Code: dd e0 23 94 88 48 89 fa 48 c1 ea 03 80 3c 02 00 0f 85 bf 00 00 00 48 8b 14 dd e0 23 94 88 48 c7 c7 40 19 94 88 e8 42 3d a6 fd <0f> 0b 83 05 83 50 13 07 01 48 83 c4 20 5b 5d 41 5c 41 5d c3 48 89 [ 81.954315][ T6902] RSP: 0018:ffffc90005557570 EFLAGS: 00010086 [ 81.961135][ T6902] RAX: 0000000000000000 RBX: 0000000000000005 RCX: 0000000000000000 [ 81.969136][ T6902] RDX: ffff8880a1ef2300 RSI: ffffffff815dafc7 RDI: fffff52000aaaea0 [ 81.977091][ T6902] RBP: 0000000000000001 R08: 0000000000000001 R09: ffff8880ae720f8b [ 81.985046][ T6902] R10: 0000000000000000 R11: 0000000030393654 R12: ffffffff89be28e0 [ 81.993281][ T6902] R13: ffffffff81638450 R14: ffff88809e9c7200 R15: 1ffff92000aaaeb9 [ 82.001415][ T6902] ? calc_wheel_index+0x3f0/0x3f0 [ 82.006424][ T6902] ? vprintk_func+0x97/0x1a6 [ 82.011001][ T6902] debug_object_assert_init+0x1f4/0x2e0 [ 82.016525][ T6902] ? find_held_lock+0x2d/0x110 [ 82.021264][ T6902] ? debug_object_init_on_stack+0x20/0x20 [ 82.026962][ T6902] ? __queue_work+0x61a/0xf20 [ 82.031632][ T6902] ? lock_downgrade+0x830/0x830 [ 82.036466][ T6902] del_timer+0x6d/0x110 [ 82.040613][ T6902] ? detach_if_pending+0x4d0/0x4d0 [ 82.045708][ T6902] ? __queue_work+0x63c/0xf20 [ 82.050799][ T6902] ? lockdep_hardirqs_off+0x89/0xc0 [ 82.055979][ T6902] ? trace_hardirqs_off+0x76/0x210 [ 82.061072][ T6902] cancel_delayed_work+0xe0/0x450 [ 82.066103][ T6902] ? mod_delayed_work_on+0x2e0/0x2e0 [ 82.071733][ T6902] ? lockdep_hardirqs_on+0x76/0xf0 [ 82.076860][ T6902] ? queue_delayed_work_on+0x12f/0x210 [ 82.082312][ T6902] l2cap_chan_del+0x541/0x1300 [ 82.087058][ T6902] l2cap_chan_close+0x118/0xb10 [ 82.091888][ T6902] ? l2cap_retransmit_all+0x760/0x760 [ 82.097250][ T6902] ? __mutex_unlock_slowpath+0xe2/0x610 [ 82.102952][ T6902] ? mark_held_locks+0x9f/0xe0 [ 82.107855][ T6902] ? wait_for_completion+0x260/0x260 [ 82.113137][ T6902] ? lockdep_hardirqs_on_prepare+0x354/0x530 [ 82.119107][ T6902] ? l2cap_sock_shutdown+0x2c4/0xe90 [ 82.124455][ T6902] ? trace_hardirqs_on+0x5f/0x220 [ 82.129461][ T6902] l2cap_sock_shutdown+0x3b8/0xe90 [ 82.134556][ T6902] ? lock_acquire+0x1f1/0xad0 [ 82.139209][ T6902] ? bt_sock_unlink+0x1d/0x1c0 [ 82.143953][ T6902] ? l2cap_sock_suspend_cb+0x80/0x80 [ 82.149235][ T6902] ? find_held_lock+0x2d/0x110 [ 82.153987][ T6902] ? l2cap_sock_release+0x56/0x1d0 [ 82.159177][ T6902] ? lock_downgrade+0x830/0x830 [ 82.164007][ T6902] ? do_raw_read_unlock+0x70/0x70 [ 82.169030][ T6902] l2cap_sock_release+0x63/0x1d0 [ 82.173949][ T6902] __sock_release+0xcd/0x280 [ 82.178516][ T6902] sock_close+0x18/0x20 [ 82.182659][ T6902] __fput+0x285/0x920 [ 82.186636][ T6902] ? __sock_release+0x280/0x280 [ 82.191463][ T6902] task_work_run+0xdd/0x190 [ 82.195954][ T6902] do_exit+0xb7d/0x29f0 [ 82.200091][ T6902] ? lock_acquire+0x1f1/0xad0 [ 82.204753][ T6902] ? find_held_lock+0x2d/0x110 [ 82.209581][ T6902] ? mm_update_next_owner+0x7a0/0x7a0 [ 82.214966][ T6902] ? get_signal+0x34f/0x1f00 [ 82.219535][ T6902] ? lock_downgrade+0x830/0x830 [ 82.224388][ T6902] ? lock_is_held_type+0xbb/0xf0 [ 82.229317][ T6902] do_group_exit+0x125/0x310 [ 82.233904][ T6902] get_signal+0x428/0x1f00 [ 82.238317][ T6902] ? __local_bh_enable_ip+0xd1/0x190 [ 82.243601][ T6902] ? selinux_netlbl_socket_connect+0x2e/0x40 [ 82.249572][ T6902] arch_do_signal+0x82/0x2520 [ 82.254230][ T6902] ? l2cap_sock_recv_cb+0x1e0/0x1e0 [ 82.259404][ T6902] ? __sys_connect_file+0x4e/0x1a0 [ 82.264493][ T6902] ? copy_siginfo_to_user32+0xa0/0xa0 [ 82.270013][ T6902] ? __sys_connect+0x10a/0x190 [ 82.274754][ T6902] ? __sys_connect_file+0x1a0/0x1a0 [ 82.279934][ T6902] ? exit_to_user_mode_prepare+0xb9/0x1c0 [ 82.285911][ T6902] ? lockdep_hardirqs_on_prepare+0x354/0x530 [ 82.291870][ T6902] exit_to_user_mode_prepare+0x15d/0x1c0 [ 82.297487][ T6902] syscall_exit_to_user_mode+0x59/0x2b0 [ 82.303035][ T6902] entry_SYSCALL_64_after_hwframe+0x44/0xa9 [ 82.308920][ T6902] RIP: 0033:0x446d99 [ 82.312784][ T6902] Code: Bad RIP value. [ 82.316830][ T6902] RSP: 002b:00007ffc1f7fd788 EFLAGS: 00000246 ORIG_RAX: 000000000000002a [ 82.325335][ T6902] RAX: fffffffffffffffc RBX: 0000000000000003 RCX: 0000000000446d99 [ 82.333642][ T6902] RDX: 000000000000000e RSI: 0000000020000080 RDI: 0000000000000004 [ 82.341591][ T6902] RBP: 0000000000000003 R08: 00000000000000ff R09: 00000000000000ff [ 82.349713][ T6902] R10: 0000000000000004 R11: 0000000000000246 R12: 000000000073b850 [ 82.357664][ T6902] R13: 0000000000000001 R14: 0000000000000000 R15: 0000000000000000 [ 82.367542][ T6902] Kernel Offset: disabled [ 82.372206][ T6902] Rebooting in 86400 seconds..