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 Warning: Permanently added 'ci-upstream-kasan-gce-6,10.128.0.40' (ECDSA) to the list of known hosts. executing program syzkaller login: [ 38.037487] netlink: 6 bytes leftover after parsing attributes in process `syzkaller913440'. [ 38.046165] kasan: CONFIG_KASAN_INLINE enabled [ 38.050853] kasan: GPF could be caused by NULL-ptr deref or user memory access [ 38.058213] general protection fault: 0000 [#1] SMP KASAN [ 38.063719] Dumping ftrace buffer: [ 38.067223] (ftrace buffer empty) [ 38.070900] Modules linked in: [ 38.074073] CPU: 1 PID: 3005 Comm: syzkaller913440 Not tainted 4.13.0-rc5+ #41 [ 38.081417] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 38.090737] task: ffff8801d160a180 task.stack: ffff8801c12b8000 [ 38.096768] RIP: 0010:fib_dump_info+0x3aa/0x13b0 [ 38.101487] RSP: 0018:ffff8801c12bf068 EFLAGS: 00010206 [ 38.106817] RAX: dffffc0000000000 RBX: 00000000000000fe RCX: 0000000000000000 [ 38.114058] RDX: 0000000000000006 RSI: 0000000000000002 RDI: 0000000000000030 [ 38.121301] RBP: ffff8801c12bf2c0 R08: ffffed003a0e0429 R09: ffffed003a0e0429 [ 38.128538] R10: 0000000000000001 R11: ffffed003a0e0428 R12: ffff8801d0702135 [ 38.135774] R13: 00000000000000fb R14: ffff8801d0702124 R15: ffff8801d05cdac0 [ 38.143019] FS: 0000000000c09880(0000) GS:ffff8801db300000(0000) knlGS:0000000000000000 [ 38.151216] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 38.157063] CR2: 0000000020605fde CR3: 00000001c1341000 CR4: 00000000001406e0 [ 38.164306] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 38.171549] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 38.178801] Call Trace: [ 38.181359] ? ip_route_input_noref+0x1e0/0x1e0 [ 38.186005] ? fib_create_info+0x38d0/0x38d0 [ 38.190383] ? __kmalloc_node_track_caller+0x47/0x70 [ 38.195510] ? memset+0x31/0x40 [ 38.198766] ? __alloc_skb+0x548/0x740 [ 38.202631] ? lock_acquire+0x1d5/0x580 [ 38.206570] ? lock_acquire+0x1d5/0x580 [ 38.210512] ? inet_rtm_getroute+0xaa0/0x2d60 [ 38.214984] ? lock_release+0xa40/0xa40 [ 38.218924] ? nla_parse+0x29a/0x3d0 [ 38.222619] inet_rtm_getroute+0xf9c/0x2d60 [ 38.226912] ? debug_check_no_locks_freed+0x3c0/0x3c0 [ 38.232073] ? ipv4_sk_update_pmtu+0xa90/0xa90 [ 38.236633] ? debug_check_no_locks_freed+0x3c0/0x3c0 [ 38.241792] ? find_held_lock+0x35/0x1d0 [ 38.245823] ? lock_acquire+0x1d5/0x580 [ 38.249771] ? lock_acquire+0x1d5/0x580 [ 38.253719] ? rtnetlink_rcv+0x1b/0x40 [ 38.257593] ? debug_check_no_locks_freed+0x3c0/0x3c0 [ 38.262751] ? lock_release+0xa40/0xa40 [ 38.266707] ? check_same_owner+0x320/0x320 [ 38.271001] ? do_raw_spin_trylock+0x190/0x190 [ 38.275550] ? __might_sleep+0x95/0x190 [ 38.279490] ? rtnetlink_rcv+0x1b/0x40 [ 38.283346] ? __mutex_lock+0x16f/0x1870 [ 38.287374] ? rtnetlink_rcv+0x1b/0x40 [ 38.291231] ? trace_hardirqs_on_caller+0x421/0x5c0 [ 38.296222] ? rtnetlink_rcv+0x1b/0x40 [ 38.300086] ? netlink_lookup+0x5f7/0xa90 [ 38.304213] ? netlink_lookup+0x620/0xa90 [ 38.308339] ? ipv4_sk_update_pmtu+0xa90/0xa90 [ 38.312893] rtnetlink_rcv_msg+0x5ea/0x840 [ 38.317101] ? rtnl_newlink+0x1b00/0x1b00 [ 38.321216] ? netlink_deliver_tap+0x176/0xa60 [ 38.325773] ? iov_iter_advance+0x2a1/0x13f0 [ 38.330163] netlink_rcv_skb+0x216/0x440 [ 38.334192] ? rtnl_newlink+0x1b00/0x1b00 [ 38.338315] ? netlink_ack+0xab0/0xab0 [ 38.342177] ? netlink_skb_destructor+0x1d0/0x1d0 [ 38.346999] rtnetlink_rcv+0x2a/0x40 [ 38.350680] netlink_unicast+0x4e8/0x6f0 [ 38.354710] ? netlink_attachskb+0x8a0/0x8a0 [ 38.359089] ? security_netlink_send+0x81/0xb0 [ 38.363639] netlink_sendmsg+0xa4a/0xe60 [ 38.367677] ? netlink_unicast+0x6f0/0x6f0 [ 38.371881] ? security_socket_sendmsg+0x89/0xb0 [ 38.376611] ? netlink_unicast+0x6f0/0x6f0 [ 38.380819] sock_sendmsg+0xca/0x110 [ 38.384501] sock_write_iter+0x31a/0x5d0 [ 38.388529] ? __handle_mm_fault+0x57f/0x3810 [ 38.393011] ? sock_sendmsg+0x110/0x110 [ 38.397004] ? iov_iter_init+0xaf/0x1d0 [ 38.400945] __vfs_write+0x684/0x970 [ 38.404626] ? default_llseek+0x290/0x290 [ 38.408740] ? selinux_capset+0x100/0x100 [ 38.412859] ? selinux_file_permission+0x82/0x460 [ 38.417675] ? rw_verify_area+0xe5/0x2b0 [ 38.421717] ? __fdget_raw+0x20/0x20 [ 38.425398] vfs_write+0x189/0x510 [ 38.428908] SyS_write+0xef/0x220 [ 38.432342] ? SyS_read+0x220/0x220 [ 38.435933] ? trace_hardirqs_on_caller+0x421/0x5c0 [ 38.440936] ? trace_hardirqs_on_thunk+0x1a/0x1c [ 38.445666] entry_SYSCALL_64_fastpath+0x1f/0xbe [ 38.450388] RIP: 0033:0x43fcd9 [ 38.453549] RSP: 002b:00007ffd99d6d6e8 EFLAGS: 00000203 ORIG_RAX: 0000000000000001 [ 38.461222] RAX: ffffffffffffffda RBX: 00000000004002c8 RCX: 000000000043fcd9 [ 38.468459] RDX: 0000000000000022 RSI: 0000000020605fde RDI: 0000000000000003 [ 38.475701] RBP: 0000000000000086 R08: 0000000000000000 R09: 0000000000000000 [ 38.482945] R10: 0000000000000000 R11: 0000000000000203 R12: 0000000000401640 [ 38.490179] R13: 00000000004016d0 R14: 0000000000000000 R15: 0000000000000000 [ 38.497429] 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 [ 38.516500] RIP: fib_dump_info+0x3aa/0x13b0 RSP: ffff8801c12bf068 [ 38.522749] ---[ end trace a1346b0c0270b6f7 ]--- [ 38.527485] Kernel panic - not syncing: Fatal exception [ 38.533100] Dumping ftrace buffer: [ 38.536605] (ftrace buffer empty) [ 38.540279] Kernel Offset: disabled [ 38.543871] Rebooting in 86400 seconds..