[ 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 '10.128.1.18' (ECDSA) to the list of known hosts. executing program syzkaller login: [ 79.460372][ T8500] general protection fault, probably for non-canonical address 0xe000080fe8bc6ced: 0000 [#1] PREEMPT SMP KASAN [ 79.473509][ T8500] KASAN: probably user-memory-access in range [0x0000607f45e36768-0x0000607f45e3676f] [ 79.484203][ T8500] CPU: 1 PID: 8500 Comm: syz-executor761 Not tainted 5.11.0-rc5-syzkaller #0 [ 79.494282][ T8500] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 79.509063][ T8500] RIP: 0010:j1939_priv_get_by_ndev_locked+0xff/0x220 [ 79.517240][ T8500] Code: a0 05 00 00 48 85 db 0f 84 a8 00 00 00 e8 99 6a 90 f9 48 8d bb 28 60 00 00 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03 <80> 3c 02 00 0f 85 01 01 00 00 4c 8b a3 28 60 00 00 4d 85 e4 74 75 [ 79.539757][ T8500] RSP: 0018:ffffc9000158fc68 EFLAGS: 00010206 [ 79.546526][ T8500] RAX: dffffc0000000000 RBX: 0000607f45e30740 RCX: 0000000000000000 [ 79.554887][ T8500] RDX: 00000c0fe8bc6ced RSI: ffffffff87e256b7 RDI: 0000607f45e36768 [ 79.564711][ T8500] RBP: 0000000000000010 R08: 0000000000000000 R09: 0000000000000118 [ 79.581710][ T8500] R10: ffffffff87e2566f R11: 0000000000000118 R12: 0000000000000118 [ 79.595476][ T8500] R13: ffffffff8cc918c0 R14: 0000000000000000 R15: ffffffff8cc5aa00 [ 79.609633][ T8500] FS: 0000000000d31880(0000) GS:ffff8880b9f00000(0000) knlGS:0000000000000000 [ 79.622553][ T8500] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 79.637364][ T8500] CR2: 0000000020000080 CR3: 000000001b25a000 CR4: 00000000001506e0 [ 79.654692][ T8500] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 79.666435][ T8500] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 79.679606][ T8500] Call Trace: [ 79.684000][ T8500] j1939_netdev_notify+0x41/0x1a0 [ 79.691681][ T8500] notifier_call_chain+0xb5/0x200 [ 79.701049][ T8500] call_netdevice_notifiers_info+0xb5/0x130 [ 79.709532][ T8500] call_netdevice_notifiers+0x79/0xa0 [ 79.715212][ T8500] ? call_netdevice_notifiers_info+0x130/0x130 [ 79.721982][ T8500] ? __sanitizer_cov_trace_switch+0x63/0xf0 [ 79.733484][ T8500] __tun_chr_ioctl.isra.0+0x3702/0x4360 [ 79.740253][ T8500] ? build_open_flags+0x680/0x680 [ 79.745604][ T8500] ? tun_chr_read_iter+0x250/0x250 [ 79.751478][ T8500] ? _down_write_nest_lock+0x150/0x150 [ 79.757051][ T8500] ? __sanitizer_cov_trace_const_cmp4+0x1c/0x70 [ 79.763504][ T8500] ? __tun_chr_ioctl.isra.0+0x4360/0x4360 [ 79.769351][ T8500] __x64_sys_ioctl+0x193/0x200 [ 79.774205][ T8500] do_syscall_64+0x2d/0x70 [ 79.778781][ T8500] entry_SYSCALL_64_after_hwframe+0x44/0xa9 [ 79.784713][ T8500] RIP: 0033:0x440359 [ 79.788740][ T8500] Code: 18 89 d0 c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 0f 83 7b 13 fc ff c3 66 2e 0f 1f 84 00 00 00 00 [ 79.808360][ T8500] RSP: 002b:00007ffc26df8ca8 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 [ 79.817070][ T8500] RAX: ffffffffffffffda RBX: 00000000004002c8 RCX: 0000000000440359 [ 79.825188][ T8500] RDX: 0000000000000118 RSI: 00000000400454cd RDI: 0000000000000003 [ 79.833439][ T8500] RBP: 00000000006ca018 R08: 00000000004002c8 R09: 00000000004002c8 [ 79.841796][ T8500] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000401b60 [ 79.850033][ T8500] R13: 0000000000401bf0 R14: 0000000000000000 R15: 0000000000000000 [ 79.858086][ T8500] Modules linked in: [ 79.864130][ T8500] ---[ end trace 8039d0b489c3966e ]--- [ 79.871303][ T8500] RIP: 0010:j1939_priv_get_by_ndev_locked+0xff/0x220 [ 79.878762][ T8500] Code: a0 05 00 00 48 85 db 0f 84 a8 00 00 00 e8 99 6a 90 f9 48 8d bb 28 60 00 00 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03 <80> 3c 02 00 0f 85 01 01 00 00 4c 8b a3 28 60 00 00 4d 85 e4 74 75 [ 79.901297][ T8500] RSP: 0018:ffffc9000158fc68 EFLAGS: 00010206 [ 79.907514][ T8500] RAX: dffffc0000000000 RBX: 0000607f45e30740 RCX: 0000000000000000 [ 79.916218][ T8500] RDX: 00000c0fe8bc6ced RSI: ffffffff87e256b7 RDI: 0000607f45e36768 [ 79.924392][ T8500] RBP: 0000000000000010 R08: 0000000000000000 R09: 0000000000000118 [ 79.932668][ T8500] R10: ffffffff87e2566f R11: 0000000000000118 R12: 0000000000000118 [ 79.940750][ T8500] R13: ffffffff8cc918c0 R14: 0000000000000000 R15: ffffffff8cc5aa00 [ 79.949201][ T8500] FS: 0000000000d31880(0000) GS:ffff8880b9f00000(0000) knlGS:0000000000000000 [ 79.958968][ T8500] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 79.965886][ T8500] CR2: 0000000020000080 CR3: 000000001b25a000 CR4: 00000000001506e0 [ 79.973955][ T8500] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 79.982077][ T8500] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 79.990326][ T8500] Kernel panic - not syncing: Fatal exception [ 79.996991][ T8500] Kernel Offset: disabled [ 80.001346][ T8500] Rebooting in 86400 seconds..