Warning: Permanently added '10.128.0.113' (ECDSA) to the list of known hosts. executing program syzkaller login: [ 56.262589][ T6841] general protection fault, probably for non-canonical address 0xdffffc0000000010: 0000 [#1] PREEMPT SMP KASAN [ 56.274302][ T6841] KASAN: null-ptr-deref in range [0x0000000000000080-0x0000000000000087] [ 56.282685][ T6841] CPU: 0 PID: 6841 Comm: syz-executor369 Not tainted 5.9.0-rc1-syzkaller #0 [ 56.291341][ T6841] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 56.301388][ T6841] RIP: 0010:fib_dump_info+0x893/0x1f00 [ 56.306817][ T6841] Code: 3c 02 00 0f 85 83 15 00 00 4d 8b 6d 10 e8 65 fb 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 a7 e9 2a 01 [ 56.326405][ T6841] RSP: 0018:ffffc9000526f260 EFLAGS: 00010202 [ 56.332448][ T6841] RAX: dffffc0000000000 RBX: ffff88809ec90400 RCX: ffffffff86c845e3 [ 56.340420][ T6841] RDX: 0000000000000010 RSI: ffffffff86c8461b RDI: 0000000000000080 [ 56.348387][ T6841] RBP: ffff888093eb9017 R08: 0000000000000001 R09: ffff888093eb902b [ 56.356348][ T6841] R10: 0000000000000001 R11: 0000000000000000 R12: ffff888093eb9000 [ 56.364289][ T6841] R13: 0000000000000000 R14: 0000000000000000 R15: ffff88809e3c1580 [ 56.372233][ T6841] FS: 0000000001725880(0000) GS:ffff8880ae600000(0000) knlGS:0000000000000000 [ 56.381131][ T6841] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 56.387694][ T6841] CR2: 0000000020000004 CR3: 000000009e03b000 CR4: 00000000001506f0 [ 56.395638][ T6841] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 56.403595][ T6841] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 56.411534][ T6841] Call Trace: [ 56.414801][ T6841] ? fib_create_info+0x49e0/0x49e0 [ 56.419883][ T6841] ? __phys_addr+0x9a/0x110 [ 56.424372][ T6841] ? memset+0x20/0x40 [ 56.428323][ T6841] ? __alloc_skb+0x34a/0x550 [ 56.432887][ T6841] rtmsg_fib+0x318/0xdf0 [ 56.437103][ T6841] ? lock_downgrade+0x830/0x830 [ 56.441936][ T6841] ? notifier_call_chain+0x1a9/0x200 [ 56.447189][ T6841] ? fib_dump_info+0x1f00/0x1f00 [ 56.452135][ T6841] ? __atomic_notifier_call_chain+0xe7/0x180 [ 56.458122][ T6841] fib_table_insert+0x1383/0x1af0 [ 56.463125][ T6841] ? fib_route_seq_show+0xe10/0xe10 [ 56.468306][ T6841] ? __nla_validate+0x3c/0x50 [ 56.472968][ T6841] ? rtm_to_fib_config+0x703/0x1180 [ 56.478148][ T6841] ? fib_new_table+0xfb/0x460 [ 56.482810][ T6841] inet_rtm_newroute+0x109/0x1e0 [ 56.487720][ T6841] ? inet_rtm_delroute+0x350/0x350 [ 56.492809][ T6841] ? lock_is_held_type+0xbb/0xf0 [ 56.497716][ T6841] ? inet_rtm_delroute+0x350/0x350 [ 56.502812][ T6841] rtnetlink_rcv_msg+0x44e/0xad0 [ 56.507722][ T6841] ? rtnetlink_put_metrics+0x510/0x510 [ 56.513176][ T6841] ? lock_acquire+0x1f1/0xad0 [ 56.517825][ T6841] ? netlink_deliver_tap+0x146/0xb70 [ 56.523086][ T6841] netlink_rcv_skb+0x15a/0x430 [ 56.527847][ T6841] ? rtnetlink_put_metrics+0x510/0x510 [ 56.533279][ T6841] ? netlink_ack+0xa10/0xa10 [ 56.537844][ T6841] ? lock_is_held_type+0xbb/0xf0 [ 56.542753][ T6841] netlink_unicast+0x533/0x7d0 [ 56.547494][ T6841] ? netlink_attachskb+0x810/0x810 [ 56.552581][ T6841] ? _copy_from_iter_full+0x247/0x890 [ 56.557927][ T6841] ? __phys_addr+0x9a/0x110 [ 56.562402][ T6841] ? __phys_addr_symbol+0x2c/0x70 [ 56.567399][ T6841] ? __check_object_size+0x171/0x3e4 [ 56.572657][ T6841] netlink_sendmsg+0x856/0xd90 [ 56.577394][ T6841] ? netlink_unicast+0x7d0/0x7d0 [ 56.582305][ T6841] ? bpf_lsm_socket_sendmsg+0x5/0x10 [ 56.587558][ T6841] ? netlink_unicast+0x7d0/0x7d0 [ 56.592481][ T6841] sock_sendmsg+0xcf/0x120 [ 56.596883][ T6841] ____sys_sendmsg+0x6e8/0x810 [ 56.601639][ T6841] ? kernel_sendmsg+0x50/0x50 [ 56.606285][ T6841] ? do_recvmmsg+0x6d0/0x6d0 [ 56.610852][ T6841] ? lockdep_hardirqs_on_prepare+0x530/0x530 [ 56.616814][ T6841] ? release_sock+0x1b/0x1b0 [ 56.621392][ T6841] ___sys_sendmsg+0xf3/0x170 [ 56.625965][ T6841] ? sendmsg_copy_msghdr+0x160/0x160 [ 56.631235][ T6841] ? lock_downgrade+0x830/0x830 [ 56.636055][ T6841] ? lock_downgrade+0x830/0x830 [ 56.640885][ T6841] ? __might_fault+0x190/0x1d0 [ 56.645620][ T6841] ? _copy_to_user+0x126/0x160 [ 56.650372][ T6841] ? move_addr_to_user+0xb5/0x200 [ 56.655372][ T6841] ? __fget_light+0x215/0x280 [ 56.660022][ T6841] __sys_sendmsg+0xe5/0x1b0 [ 56.664514][ T6841] ? __sys_sendmsg_sock+0xb0/0xb0 [ 56.669511][ T6841] ? trace_hardirqs_on+0x5f/0x220 [ 56.674514][ T6841] ? lockdep_hardirqs_on+0x76/0xf0 [ 56.679608][ T6841] do_syscall_64+0x2d/0x70 [ 56.684012][ T6841] entry_SYSCALL_64_after_hwframe+0x44/0xa9 [ 56.689878][ T6841] RIP: 0033:0x440549 [ 56.693763][ T6841] 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 [ 56.713359][ T6841] RSP: 002b:00007ffe9e1c8838 EFLAGS: 00000246 ORIG_RAX: 000000000000002e [ 56.721740][ T6841] RAX: ffffffffffffffda RBX: 00000000004002c8 RCX: 0000000000440549 [ 56.729682][ T6841] RDX: 0000000000000000 RSI: 0000000020000580 RDI: 0000000000000004 [ 56.737626][ T6841] RBP: 00000000006ca018 R08: 00000000004002c8 R09: 00000000004002c8 [ 56.745586][ T6841] R10: 00000000004002c8 R11: 0000000000000246 R12: 0000000000401d50 [ 56.753530][ T6841] R13: 0000000000401de0 R14: 0000000000000000 R15: 0000000000000000 [ 56.761474][ T6841] Modules linked in: [ 56.765687][ T6841] ---[ end trace 4cbd1943fa3c3c12 ]--- [ 56.771195][ T6841] RIP: 0010:fib_dump_info+0x893/0x1f00 [ 56.776658][ T6841] Code: 3c 02 00 0f 85 83 15 00 00 4d 8b 6d 10 e8 65 fb 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 a7 e9 2a 01 [ 56.796396][ T6841] RSP: 0018:ffffc9000526f260 EFLAGS: 00010202 [ 56.802501][ T6841] RAX: dffffc0000000000 RBX: ffff88809ec90400 RCX: ffffffff86c845e3 [ 56.810512][ T6841] RDX: 0000000000000010 RSI: ffffffff86c8461b RDI: 0000000000000080 [ 56.818486][ T6841] RBP: ffff888093eb9017 R08: 0000000000000001 R09: ffff888093eb902b [ 56.826500][ T6841] R10: 0000000000000001 R11: 0000000000000000 R12: ffff888093eb9000 [ 56.834555][ T6841] R13: 0000000000000000 R14: 0000000000000000 R15: ffff88809e3c1580 [ 56.842579][ T6841] FS: 0000000001725880(0000) GS:ffff8880ae600000(0000) knlGS:0000000000000000 [ 56.851555][ T6841] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 56.858134][ T6841] CR2: 0000000020000004 CR3: 000000009e03b000 CR4: 00000000001506f0 [ 56.866163][ T6841] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 56.874228][ T6841] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 56.882268][ T6841] Kernel panic - not syncing: Fatal exception [ 56.889348][ T6841] Kernel Offset: disabled [ 56.893666][ T6841] Rebooting in 86400 seconds..