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-9,10.128.0.3' (ECDSA) to the list of known hosts. executing program syzkaller login: [ 20.837042] kasan: CONFIG_KASAN_INLINE enabled [ 20.837774] kasan: GPF could be caused by NULL-ptr deref or user memory access [ 20.838895] general protection fault: 0000 [#1] SMP KASAN [ 20.839639] Dumping ftrace buffer: [ 20.840111] (ftrace buffer empty) [ 20.840622] Modules linked in: [ 20.841056] CPU: 0 PID: 2911 Comm: syzkaller611666 Not tainted 4.13.0-rc4+ #26 [ 20.842018] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 20.843237] task: ffff8801d2646380 task.stack: ffff8801d2dc0000 [ 20.844071] RIP: 0010:fib_dump_info+0x3aa/0x13b0 [ 20.844730] RSP: 0018:ffff8801d2dc7068 EFLAGS: 00010206 [ 20.845437] RAX: dffffc0000000000 RBX: 0000000000000000 RCX: 0000000000000000 [ 20.846389] RDX: 0000000000000006 RSI: 0000000000000002 RDI: 0000000000000030 [ 20.847340] RBP: ffff8801d2dc72c0 R08: ffffed003a72a489 R09: ffffed003a72a489 [ 20.848288] R10: 0000000000000001 R11: ffffed003a72a488 R12: ffff8801d3952435 [ 20.849239] R13: 0000000000000000 R14: ffff8801d3952424 R15: ffff8801cf3fdd40 [ 20.850190] FS: 000000000236b880(0000) GS:ffff8801dc000000(0000) knlGS:0000000000000000 [ 20.851284] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 20.852074] CR2: 0000000020006fdb CR3: 00000001d17e1000 CR4: 00000000001406f0 [ 20.853048] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 20.854016] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 20.854989] Call Trace: [ 20.855346] ? ip_route_input_noref+0x1e0/0x1e0 [ 20.856000] ? kmem_cache_alloc_node_trace+0x323/0x710 [ 20.856711] ? fib_create_info+0x3880/0x3880 [ 20.858163] ? __kmalloc_node_track_caller+0x47/0x70 [ 20.863237] ? memset+0x31/0x40 [ 20.866484] ? __alloc_skb+0x548/0x740 [ 20.870336] ? lock_acquire+0x1d5/0x580 [ 20.874273] ? lock_acquire+0x1d5/0x580 [ 20.878210] ? inet_rtm_getroute+0xaa0/0x2d40 [ 20.882677] ? lock_release+0xa40/0xa40 [ 20.886617] ? nla_parse+0x29a/0x3d0 [ 20.890299] ? check_noncircular+0x20/0x20 [ 20.894501] inet_rtm_getroute+0xfb7/0x2d40 [ 20.898787] ? debug_check_no_locks_freed+0x3c0/0x3c0 [ 20.903947] ? ipv4_sk_update_pmtu+0xa90/0xa90 [ 20.908490] ? debug_check_no_locks_freed+0x3c0/0x3c0 [ 20.913646] ? find_held_lock+0x35/0x1d0 [ 20.917673] ? lock_acquire+0x1d5/0x580 [ 20.921608] ? lock_acquire+0x1d5/0x580 [ 20.925641] ? rtnetlink_rcv+0x1b/0x40 [ 20.929491] ? debug_check_no_locks_freed+0x3c0/0x3c0 [ 20.934643] ? lock_release+0xa40/0xa40 [ 20.938580] ? check_same_owner+0x320/0x320 [ 20.942869] ? do_raw_spin_trylock+0x190/0x190 [ 20.947419] ? __might_sleep+0x95/0x190 [ 20.951357] ? rtnetlink_rcv+0x1b/0x40 [ 20.955209] ? __mutex_lock+0x16f/0x1870 [ 20.959231] ? rtnetlink_rcv+0x1b/0x40 [ 20.963079] ? trace_hardirqs_on_caller+0x421/0x5c0 [ 20.968058] ? rtnetlink_rcv+0x1b/0x40 [ 20.971930] ? netlink_lookup+0x5f7/0xa90 [ 20.976054] ? netlink_lookup+0x620/0xa90 [ 20.980165] ? ipv4_sk_update_pmtu+0xa90/0xa90 [ 20.984710] rtnetlink_rcv_msg+0x5ea/0x840 [ 20.988911] ? rtnl_newlink+0x1b00/0x1b00 [ 20.993028] ? netlink_deliver_tap+0x176/0xa60 [ 20.997575] ? iov_iter_advance+0x2a1/0x13f0 [ 21.001946] ? sock_has_perm+0x29c/0x400 [ 21.005974] netlink_rcv_skb+0x216/0x440 [ 21.009998] ? rtnl_newlink+0x1b00/0x1b00 [ 21.014110] ? netlink_ack+0xab0/0xab0 [ 21.017962] ? netlink_skb_destructor+0x1d0/0x1d0 [ 21.022770] rtnetlink_rcv+0x2a/0x40 [ 21.026447] netlink_unicast+0x4e8/0x6f0 [ 21.030887] ? netlink_attachskb+0x8a0/0x8a0 [ 21.035267] ? security_netlink_send+0x81/0xb0 [ 21.039816] netlink_sendmsg+0xa4a/0xe60 [ 21.043845] ? netlink_unicast+0x6f0/0x6f0 [ 21.048045] ? security_socket_sendmsg+0x89/0xb0 [ 21.052762] ? netlink_unicast+0x6f0/0x6f0 [ 21.056966] sock_sendmsg+0xca/0x110 [ 21.060646] sock_write_iter+0x31a/0x5d0 [ 21.064672] ? sock_sendmsg+0x110/0x110 [ 21.068613] ? iov_iter_init+0xaf/0x1d0 [ 21.072553] __vfs_write+0x684/0x970 [ 21.076231] ? default_llseek+0x290/0x290 [ 21.080342] ? selinux_capset+0x100/0x100 [ 21.084457] ? selinux_file_permission+0x82/0x460 [ 21.089265] ? rw_verify_area+0xe5/0x2b0 [ 21.093290] ? __fdget_raw+0x20/0x20 [ 21.096973] vfs_write+0x189/0x510 [ 21.100477] SyS_write+0xef/0x220 [ 21.103895] ? SyS_read+0x220/0x220 [ 21.107485] ? trace_hardirqs_on_caller+0x421/0x5c0 [ 21.112471] ? trace_hardirqs_on_thunk+0x1a/0x1c [ 21.117194] entry_SYSCALL_64_fastpath+0x1f/0xbe [ 21.121913] RIP: 0033:0x43fcd9 [ 21.125065] RSP: 002b:00007ffd42bbaab8 EFLAGS: 00000203 ORIG_RAX: 0000000000000001 [ 21.132736] RAX: ffffffffffffffda RBX: 00000000004002c8 RCX: 000000000043fcd9 [ 21.139967] RDX: 0000000000000025 RSI: 0000000020006fdb RDI: 0000000000000003 [ 21.147201] RBP: 0000000000000086 R08: 0000000000000000 R09: 0000000000000000 [ 21.154435] R10: 0000000000000000 R11: 0000000000000203 R12: 0000000000401640 [ 21.161670] R13: 00000000004016d0 R14: 0000000000000000 R15: 0000000000000000 [ 21.168912] 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 [ 21.187979] RIP: fib_dump_info+0x3aa/0x13b0 RSP: ffff8801d2dc7068 [ 21.194255] ---[ end trace e7eba1daa2d7c6f0 ]--- [ 21.198992] Kernel panic - not syncing: Fatal exception [ 21.204696] Dumping ftrace buffer: [ 21.208221] (ftrace buffer empty) [ 21.211907] Kernel Offset: disabled [ 21.215499] Rebooting in 86400 seconds..