[ 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. Starting Load/Save RF Kill Switch Status... [ OK ] Started Load/Save RF Kill Switch Status. Debian GNU/Linux 9 syzkaller ttyS0 Warning: Permanently added '10.128.0.218' (ECDSA) to the list of known hosts. executing program syzkaller login: [ 65.706091][ T6843] general protection fault, probably for non-canonical address 0xdffffc0000000010: 0000 [#1] PREEMPT SMP KASAN [ 65.718033][ T6843] KASAN: null-ptr-deref in range [0x0000000000000080-0x0000000000000087] [ 65.726431][ T6843] CPU: 0 PID: 6843 Comm: syz-executor824 Not tainted 5.9.0-rc1-syzkaller #0 [ 65.735081][ T6843] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 65.745147][ T6843] RIP: 0010:fib_dump_info+0x893/0x1f00 [ 65.750592][ T6843] Code: 3c 02 00 0f 85 83 15 00 00 4d 8b 6d 10 e8 e5 ed ab fa 49 8d bd 80 00 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 62 15 00 00 4d 8b ad 80 00 00 00 e8 97 de 2a 01 [ 65.770193][ T6843] RSP: 0018:ffffc9000534f260 EFLAGS: 00010202 [ 65.776283][ T6843] RAX: dffffc0000000000 RBX: ffff8880a1a4a500 RCX: ffffffff86c850f3 [ 65.784242][ T6843] RDX: 0000000000000010 RSI: ffffffff86c8512b RDI: 0000000000000080 [ 65.792197][ T6843] RBP: ffff8880a1120817 R08: 0000000000000001 R09: ffff8880a112082b [ 65.800177][ T6843] R10: 0000000000000001 R11: 0000000000000000 R12: ffff8880a1120800 [ 65.808154][ T6843] R13: 0000000000000000 R14: 0000000000000000 R15: ffff88809a5c7b80 [ 65.816111][ T6843] FS: 0000000002566880(0000) GS:ffff8880ae600000(0000) knlGS:0000000000000000 [ 65.825037][ T6843] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 65.831599][ T6843] CR2: 0000000020000004 CR3: 00000000a9317000 CR4: 00000000001506f0 [ 65.839571][ T6843] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 65.847526][ T6843] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 65.855496][ T6843] Call Trace: [ 65.858773][ T6843] ? fib_create_info+0x49e0/0x49e0 [ 65.863880][ T6843] ? __phys_addr+0x9a/0x110 [ 65.868378][ T6843] ? memset+0x20/0x40 [ 65.872347][ T6843] ? __alloc_skb+0x34a/0x550 [ 65.876927][ T6843] rtmsg_fib+0x318/0xdf0 [ 65.881161][ T6843] ? lock_downgrade+0x830/0x830 [ 65.885994][ T6843] ? notifier_call_chain+0x1a9/0x200 [ 65.891270][ T6843] ? fib_dump_info+0x1f00/0x1f00 [ 65.896199][ T6843] ? __atomic_notifier_call_chain+0xe7/0x180 [ 65.902165][ T6843] fib_table_insert+0x1383/0x1af0 [ 65.907192][ T6843] ? fib_route_seq_show+0xe10/0xe10 [ 65.912369][ T6843] ? __nla_validate+0x3c/0x50 [ 65.917020][ T6843] ? rtm_to_fib_config+0x703/0x1180 [ 65.922197][ T6843] ? fib_new_table+0xfb/0x460 [ 65.926883][ T6843] inet_rtm_newroute+0x109/0x1e0 [ 65.931810][ T6843] ? inet_rtm_delroute+0x350/0x350 [ 65.936917][ T6843] ? lock_is_held_type+0xbb/0xf0 [ 65.941870][ T6843] ? inet_rtm_delroute+0x350/0x350 [ 65.946964][ T6843] rtnetlink_rcv_msg+0x44e/0xad0 [ 65.951887][ T6843] ? rtnetlink_put_metrics+0x510/0x510 [ 65.957326][ T6843] ? lock_acquire+0x1f1/0xad0 [ 65.961983][ T6843] ? netlink_deliver_tap+0x146/0xb70 [ 65.967330][ T6843] netlink_rcv_skb+0x15a/0x430 [ 65.972072][ T6843] ? rtnetlink_put_metrics+0x510/0x510 [ 65.977534][ T6843] ? netlink_ack+0xa10/0xa10 [ 65.982110][ T6843] ? lock_is_held_type+0xbb/0xf0 [ 65.987024][ T6843] netlink_unicast+0x533/0x7d0 [ 65.991771][ T6843] ? netlink_attachskb+0x810/0x810 [ 65.996895][ T6843] ? _copy_from_iter_full+0x247/0x890 [ 66.002275][ T6843] ? __phys_addr+0x9a/0x110 [ 66.006773][ T6843] ? __phys_addr_symbol+0x2c/0x70 [ 66.011794][ T6843] ? __check_object_size+0x171/0x3e4 [ 66.017082][ T6843] netlink_sendmsg+0x856/0xd90 [ 66.021849][ T6843] ? netlink_unicast+0x7d0/0x7d0 [ 66.026795][ T6843] ? bpf_lsm_socket_sendmsg+0x5/0x10 [ 66.032079][ T6843] ? netlink_unicast+0x7d0/0x7d0 [ 66.037015][ T6843] sock_sendmsg+0xcf/0x120 [ 66.041433][ T6843] ____sys_sendmsg+0x6e8/0x810 [ 66.046201][ T6843] ? kernel_sendmsg+0x50/0x50 [ 66.050875][ T6843] ? do_recvmmsg+0x6d0/0x6d0 [ 66.055466][ T6843] ? lockdep_hardirqs_on_prepare+0x530/0x530 [ 66.061457][ T6843] ? release_sock+0x1b/0x1b0 [ 66.066046][ T6843] ___sys_sendmsg+0xf3/0x170 [ 66.070625][ T6843] ? sendmsg_copy_msghdr+0x160/0x160 [ 66.075901][ T6843] ? lock_downgrade+0x830/0x830 [ 66.080728][ T6843] ? lock_downgrade+0x830/0x830 [ 66.085557][ T6843] ? __might_fault+0x190/0x1d0 [ 66.090295][ T6843] ? _copy_to_user+0x126/0x160 [ 66.095053][ T6843] ? move_addr_to_user+0xb5/0x200 [ 66.100055][ T6843] ? __fget_light+0x215/0x280 [ 66.104722][ T6843] __sys_sendmsg+0xe5/0x1b0 [ 66.109201][ T6843] ? __sys_sendmsg_sock+0xb0/0xb0 [ 66.114216][ T6843] ? trace_hardirqs_on+0x5f/0x220 [ 66.119307][ T6843] ? lockdep_hardirqs_on+0x76/0xf0 [ 66.124429][ T6843] do_syscall_64+0x2d/0x70 [ 66.128835][ T6843] entry_SYSCALL_64_after_hwframe+0x44/0xa9 [ 66.134731][ T6843] RIP: 0033:0x440549 [ 66.138623][ T6843] 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 [ 66.158224][ T6843] RSP: 002b:00007ffea0d747c8 EFLAGS: 00000246 ORIG_RAX: 000000000000002e [ 66.166630][ T6843] RAX: ffffffffffffffda RBX: 00000000004002c8 RCX: 0000000000440549 [ 66.174583][ T6843] RDX: 0000000000000000 RSI: 0000000020000580 RDI: 0000000000000004 [ 66.182540][ T6843] RBP: 00000000006ca018 R08: 00000000004002c8 R09: 00000000004002c8 [ 66.190515][ T6843] R10: 00000000004002c8 R11: 0000000000000246 R12: 0000000000401d50 [ 66.198471][ T6843] R13: 0000000000401de0 R14: 0000000000000000 R15: 0000000000000000 [ 66.206438][ T6843] Modules linked in: [ 66.211263][ T6843] ---[ end trace 9cf9dc1b323c97af ]--- [ 66.216782][ T6843] RIP: 0010:fib_dump_info+0x893/0x1f00 [ 66.222247][ T6843] Code: 3c 02 00 0f 85 83 15 00 00 4d 8b 6d 10 e8 e5 ed ab fa 49 8d bd 80 00 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 62 15 00 00 4d 8b ad 80 00 00 00 e8 97 de 2a 01 [ 66.242144][ T6843] RSP: 0018:ffffc9000534f260 EFLAGS: 00010202 [ 66.248269][ T6843] RAX: dffffc0000000000 RBX: ffff8880a1a4a500 RCX: ffffffff86c850f3 [ 66.256355][ T6843] RDX: 0000000000000010 RSI: ffffffff86c8512b RDI: 0000000000000080 [ 66.264389][ T6843] RBP: ffff8880a1120817 R08: 0000000000000001 R09: ffff8880a112082b [ 66.272362][ T6843] R10: 0000000000000001 R11: 0000000000000000 R12: ffff8880a1120800 [ 66.280396][ T6843] R13: 0000000000000000 R14: 0000000000000000 R15: ffff88809a5c7b80 [ 66.288444][ T6843] FS: 0000000002566880(0000) GS:ffff8880ae600000(0000) knlGS:0000000000000000 [ 66.297456][ T6843] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 66.304120][ T6843] CR2: 0000000020000004 CR3: 00000000a9317000 CR4: 00000000001506f0 [ 66.312098][ T6843] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 66.321198][ T6843] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 66.329218][ T6843] Kernel panic - not syncing: Fatal exception [ 66.336486][ T6843] Kernel Offset: disabled [ 66.340814][ T6843] Rebooting in 86400 seconds..