Warning: Permanently added 'ci-upstream-kasan-gce-3,10.128.0.29' (ECDSA) to the list of known hosts. executing program serialport: Connected to syzkaller.us-central1-c.ci-upstream-kasan-gce-3 port 1 (session ID: 5352b8ffbba2ff61fb81de1d5353b431a496c01bd6747628540727f1cbd3e664, active connections: 1). INIT: Entering runlevel: 2 [info] Using makefile-style concurrent boot in runlevel 2. [....] Starting enhanced syslogd: rsyslogd[?25l[?1c7[ ok 8[?25h[?0c. [....] Starting periodic command scheduler: cron[?25l[?1c7[ ok 8[?25h[?0c. [....] Starting OpenBSD Secure Shell server: sshd[?25l[?1c7[ ok 8[?25h[?0c. Debian GNU/Linux 7 syzkaller ttyS0 syzkaller login: [ 65.867646] netlink: 8 bytes leftover after parsing attributes in process `syzkaller481514'. [ 65.868942] kasan: CONFIG_KASAN_INLINE enabled [ 65.869737] kasan: GPF could be caused by NULL-ptr deref or user memory access [ 65.870731] general protection fault: 0000 [#1] SMP KASAN [ 65.871463] Dumping ftrace buffer: [ 65.871933] (ftrace buffer empty) [ 65.872424] Modules linked in: [ 65.872855] CPU: 0 PID: 2918 Comm: syzkaller481514 Not tainted 4.13.0-rc2+ #6 [ 65.873803] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 65.875041] task: ffff8801d120a3c0 task.stack: ffff8801d0cc0000 [ 65.875837] RIP: 0010:fib_dump_info+0x3aa/0x13b0 [ 65.876463] RSP: 0018:ffff8801d0cc7068 EFLAGS: 00010206 [ 65.877258] RAX: dffffc0000000000 RBX: 0000000000000000 RCX: 0000000000000000 [ 65.878204] RDX: 0000000000000006 RSI: 0000000000000002 RDI: 0000000000000030 [ 65.879152] RBP: ffff8801d0cc72c0 R08: ffffed003a1e0099 R09: ffffed003a1e0099 [ 65.880098] R10: 0000000000000001 R11: ffffed003a1e0098 R12: ffff8801d0f004b5 [ 65.881048] R13: 0000000000000000 R14: ffff8801d0f004a4 R15: ffff8801d30cac00 [ 65.881997] FS: 00007fa50f8ae700(0000) GS:ffff8801dc000000(0000) knlGS:0000000000000000 [ 65.883066] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 65.883837] CR2: 0000000020020000 CR3: 00000001d4283000 CR4: 00000000001406f0 [ 65.884861] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 65.885809] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 65.886756] Call Trace: [ 65.887108] ? ip_route_input_noref+0x1e0/0x1e0 [ 65.887729] ? kmem_cache_alloc_node_trace+0x323/0x710 [ 65.892849] ? fib_create_info+0x3880/0x3880 [ 65.897221] ? __kmalloc_node_track_caller+0x47/0x70 [ 65.902290] ? memset+0x31/0x40 [ 65.905532] ? __alloc_skb+0x548/0x740 [ 65.909384] ? lock_acquire+0x1d5/0x580 [ 65.913317] ? lock_acquire+0x1d5/0x580 [ 65.917252] ? inet_rtm_getroute+0xaa0/0x2d40 [ 65.921709] ? lock_release+0xa40/0xa40 [ 65.925642] ? nla_parse+0x29a/0x3d0 [ 65.929321] ? check_noncircular+0x20/0x20 [ 65.933518] inet_rtm_getroute+0xfb7/0x2d40 [ 65.937801] ? debug_check_no_locks_freed+0x3c0/0x3c0 [ 65.942958] ? ipv4_sk_update_pmtu+0xa90/0xa90 [ 65.947500] ? debug_check_no_locks_freed+0x3c0/0x3c0 [ 65.952655] ? find_held_lock+0x35/0x1d0 [ 65.956681] ? lock_acquire+0x1d5/0x580 [ 65.960616] ? lock_acquire+0x1d5/0x580 [ 65.964550] ? rtnetlink_rcv+0x1b/0x40 [ 65.968403] ? debug_check_no_locks_freed+0x3c0/0x3c0 [ 65.973555] ? lock_release+0xa40/0xa40 [ 65.977494] ? check_same_owner+0x320/0x320 [ 65.981780] ? do_raw_spin_trylock+0x190/0x190 [ 65.986330] ? __might_sleep+0x95/0x190 [ 65.990270] ? rtnetlink_rcv+0x1b/0x40 [ 65.994124] ? __mutex_lock+0x16f/0x1870 [ 65.998154] ? rtnetlink_rcv+0x1b/0x40 [ 66.002005] ? trace_hardirqs_on_caller+0x421/0x5c0 [ 66.006988] ? rtnetlink_rcv+0x1b/0x40 [ 66.010847] ? netlink_lookup+0x5f7/0xa90 [ 66.014969] ? netlink_lookup+0x620/0xa90 [ 66.019083] ? ipv4_sk_update_pmtu+0xa90/0xa90 [ 66.023630] rtnetlink_rcv_msg+0x5ea/0x840 [ 66.027829] ? rtnl_newlink+0x1b00/0x1b00 [ 66.031939] ? netlink_deliver_tap+0x176/0xa60 [ 66.036486] ? iov_iter_advance+0x2a1/0x13f0 [ 66.040858] ? sock_has_perm+0x29c/0x400 [ 66.044884] netlink_rcv_skb+0x216/0x440 [ 66.048908] ? rtnl_newlink+0x1b00/0x1b00 [ 66.053018] ? netlink_ack+0xab0/0xab0 [ 66.056872] ? netlink_skb_destructor+0x1d0/0x1d0 [ 66.061681] rtnetlink_rcv+0x2a/0x40 [ 66.065356] netlink_unicast+0x4e8/0x6f0 [ 66.069384] ? netlink_attachskb+0x8a0/0x8a0 [ 66.073760] ? security_netlink_send+0x81/0xb0 [ 66.078305] netlink_sendmsg+0xa4a/0xe60 [ 66.082333] ? netlink_unicast+0x6f0/0x6f0 [ 66.086538] ? security_socket_sendmsg+0x89/0xb0 [ 66.091258] ? netlink_unicast+0x6f0/0x6f0 [ 66.095463] sock_sendmsg+0xca/0x110 [ 66.099144] sock_write_iter+0x31a/0x5d0 [ 66.103170] ? sock_sendmsg+0x110/0x110 [ 66.107112] ? iov_iter_init+0xaf/0x1d0 [ 66.111052] __vfs_write+0x684/0x970 [ 66.114732] ? default_llseek+0x290/0x290 [ 66.118843] ? selinux_capset+0x100/0x100 [ 66.122957] ? selinux_file_permission+0x82/0x460 [ 66.127767] ? rw_verify_area+0xe5/0x2b0 [ 66.131789] ? __fdget_raw+0x20/0x20 [ 66.135464] vfs_write+0x189/0x510 [ 66.138979] SyS_write+0xef/0x220 [ 66.142398] ? SyS_read+0x220/0x220 [ 66.145986] ? trace_hardirqs_on_caller+0x421/0x5c0 [ 66.150976] ? trace_hardirqs_on_thunk+0x1a/0x1c [ 66.155705] entry_SYSCALL_64_fastpath+0x1f/0xbe [ 66.160420] RIP: 0033:0x445399 [ 66.163573] RSP: 002b:00007fa50f8addc8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 [ 66.171252] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 0000000000445399 [ 66.178487] RDX: 0000000000000025 RSI: 0000000020020000 RDI: 0000000000000003 [ 66.185721] RBP: 0000000000000086 R08: 00007fa50f8ae700 R09: 00007fa50f8ae700 [ 66.192953] R10: 00007fa50f8ae700 R11: 0000000000000246 R12: 0000000000000000 [ 66.200271] R13: 00007fff22c61a6f R14: 00007fa50f8ae9c0 R15: 0000000000000000 [ 66.207510] Code: 0f b6 b5 e4 fd ff ff 48 8b 85 f0 fd ff ff 40 88 70 17 48 8b 45 28 48 8d 78 30 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03 <0f> b6 04 02 84 c0 74 08 3c 03 0f 8e ba 0f 00 00 48 8b 45 28 44 [ 66.226574] RIP: fib_dump_info+0x3aa/0x13b0 RSP: ffff8801d0cc7068 [ 66.232854] ---[ end trace cdd1e9010d32da0e ]--- [ 66.237599] Kernel panic - not syncing: Fatal exception [ 66.243235] Dumping ftrace buffer: [ 66.246737] (ftrace buffer empty) [ 66.250407] Kernel Offset: disabled [ 66.253995] Rebooting in 86400 seconds..