[ OK ] Started Getty on tty4. [ OK ] Started Getty on tty3. [ OK ] Started Getty on tty2. [ OK ] Started Getty on tty1. [ OK ] Started Serial Getty on ttyS0. [ 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 '10.128.0.210' (ECDSA) to the list of known hosts. executing program executing program syzkaller login: [ 67.088945][ T8380] general protection fault, probably for non-canonical address 0xdffffc0000000002: 0000 [#1] PREEMPT SMP KASAN [ 67.100688][ T8380] KASAN: null-ptr-deref in range [0x0000000000000010-0x0000000000000017] [ 67.109173][ T8380] CPU: 0 PID: 8380 Comm: syz-executor429 Not tainted 5.11.0-syzkaller #0 [ 67.117569][ T8380] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 67.127604][ T8380] RIP: 0010:btf_type_id_size+0x40e/0x960 [ 67.133268][ T8380] Code: 48 c1 e9 03 80 3c 11 00 0f 85 17 05 00 00 49 8b 47 10 44 29 f3 48 8d 1c 98 48 b8 00 00 00 00 00 fc ff df 48 89 da 48 c1 ea 03 <0f> b6 14 02 48 89 d8 83 e0 07 83 c0 03 38 d0 7c 08 84 d2 0f 85 ec [ 67.153597][ T8380] RSP: 0018:ffffc90000fffd18 EFLAGS: 00010203 [ 67.160249][ T8380] RAX: dffffc0000000000 RBX: 0000000000000014 RCX: 1ffff11003a70482 [ 67.168315][ T8380] RDX: 0000000000000002 RSI: ffffffff818b12f3 RDI: ffff88801d382410 [ 67.176734][ T8380] RBP: ffff88801d382400 R08: 0000000000000005 R09: ffffffff818b114a [ 67.184729][ T8380] R10: ffffffff818b128e R11: 000000000000000a R12: 0000000000000000 [ 67.192695][ T8380] R13: dffffc0000000000 R14: 0000000000000000 R15: ffff88801d382400 [ 67.200658][ T8380] FS: 0000000000ad5300(0000) GS:ffff8880b9c00000(0000) knlGS:0000000000000000 [ 67.209581][ T8380] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 67.216244][ T8380] CR2: 00000000004ae0f0 CR3: 0000000024fca000 CR4: 00000000001506f0 [ 67.224322][ T8380] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 67.232286][ T8380] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 67.240253][ T8380] Call Trace: [ 67.243542][ T8380] __do_sys_bpf+0x4000/0x4f00 [ 67.248213][ T8380] ? lock_is_held_type+0xd5/0x130 [ 67.253276][ T8380] ? bpf_link_get_from_fd+0x110/0x110 [ 67.258649][ T8380] ? __up_read+0x1a1/0x7b0 [ 67.263064][ T8380] ? _down_write_nest_lock+0x150/0x150 [ 67.268525][ T8380] ? syscall_enter_from_user_mode+0x1d/0x50 [ 67.274419][ T8380] do_syscall_64+0x2d/0x70 [ 67.278863][ T8380] entry_SYSCALL_64_after_hwframe+0x44/0xae [ 67.284786][ T8380] RIP: 0033:0x43ff09 [ 67.288693][ T8380] Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 b1 14 00 00 90 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 73 01 c3 48 c7 c1 c0 ff ff ff f7 d8 64 89 01 48 [ 67.308309][ T8380] RSP: 002b:00007ffc5f435ef8 EFLAGS: 00000246 ORIG_RAX: 0000000000000141 [ 67.316719][ T8380] RAX: ffffffffffffffda RBX: 000000000001053e RCX: 000000000043ff09 [ 67.324697][ T8380] RDX: 0000000000000040 RSI: 0000000020000000 RDI: 0000000000000000 [ 67.332685][ T8380] RBP: 0000000000000000 R08: 00007ffc5f436098 R09: 00007ffc5f436098 [ 67.340656][ T8380] R10: 00007ffc5f436098 R11: 0000000000000246 R12: 00007ffc5f435f0c [ 67.348896][ T8380] R13: 431bde82d7b634db R14: 00000000004ae018 R15: 0000000000400488 [ 67.356890][ T8380] Modules linked in: [ 67.361207][ T8380] ---[ end trace a4216c6ef2fa85f5 ]--- [ 67.366742][ T8380] RIP: 0010:btf_type_id_size+0x40e/0x960 [ 67.372410][ T8380] Code: 48 c1 e9 03 80 3c 11 00 0f 85 17 05 00 00 49 8b 47 10 44 29 f3 48 8d 1c 98 48 b8 00 00 00 00 00 fc ff df 48 89 da 48 c1 ea 03 <0f> b6 14 02 48 89 d8 83 e0 07 83 c0 03 38 d0 7c 08 84 d2 0f 85 ec [ 67.392723][ T8380] RSP: 0018:ffffc90000fffd18 EFLAGS: 00010203 [ 67.398980][ T8380] RAX: dffffc0000000000 RBX: 0000000000000014 RCX: 1ffff11003a70482 [ 67.407044][ T8380] RDX: 0000000000000002 RSI: ffffffff818b12f3 RDI: ffff88801d382410 [ 67.415027][ T8380] RBP: ffff88801d382400 R08: 0000000000000005 R09: ffffffff818b114a [ 67.423056][ T8380] R10: ffffffff818b128e R11: 000000000000000a R12: 0000000000000000 [ 67.431141][ T8380] R13: dffffc0000000000 R14: 0000000000000000 R15: ffff88801d382400 [ 67.439286][ T8380] FS: 0000000000ad5300(0000) GS:ffff8880b9c00000(0000) knlGS:0000000000000000 [ 67.448322][ T8380] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 67.454932][ T8380] CR2: 00000000004ae0f0 CR3: 0000000024fca000 CR4: 00000000001506f0 [ 67.462958][ T8380] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 67.471020][ T8380] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 67.479076][ T8380] Kernel panic - not syncing: Fatal exception [ 67.485738][ T8380] Kernel Offset: disabled [ 67.490063][ T8380] Rebooting in 86400 seconds..