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-7,10.128.0.4' (ECDSA) to the list of known hosts. executing program syzkaller login: [ 41.524835] netlink: 8 bytes leftover after parsing attributes in process `syzkaller278140'. [ 41.526262] kasan: CONFIG_KASAN_INLINE enabled [ 41.526885] kasan: GPF could be caused by NULL-ptr deref or user memory access [ 41.528151] general protection fault: 0000 [#1] SMP KASAN [ 41.528890] Dumping ftrace buffer: [ 41.529378] (ftrace buffer empty) [ 41.529873] Modules linked in: [ 41.530306] CPU: 0 PID: 2920 Comm: syzkaller278140 Not tainted 4.13.0-rc4+ #26 [ 41.531268] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 41.532486] task: ffff8801d2604340 task.stack: ffff8801d22d0000 [ 41.533290] RIP: 0010:fib_dump_info+0x3aa/0x13b0 [ 41.533919] RSP: 0018:ffff8801d22d7068 EFLAGS: 00010206 [ 41.534627] RAX: dffffc0000000000 RBX: 00000000000000fe RCX: 0000000000000000 [ 41.535578] RDX: 0000000000000006 RSI: 0000000000000002 RDI: 0000000000000030 [ 41.536526] RBP: ffff8801d22d72c0 R08: ffffed003a28b859 R09: ffffed003a28b859 [ 41.537476] R10: 0000000000000001 R11: ffffed003a28b858 R12: ffff8801d145c2b5 [ 41.538442] R13: 00000000000000ff R14: ffff8801d145c2a4 R15: ffff8801d4f00680 [ 41.539394] FS: 0000000001bce880(0000) GS:ffff8801dc000000(0000) knlGS:0000000000000000 [ 41.540467] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 41.541252] CR2: 0000000020f68fdb CR3: 00000001d6a21000 CR4: 00000000001406f0 [ 41.542204] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 41.543154] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 41.544126] Call Trace: [ 41.544483] ? ip_route_input_noref+0x1e0/0x1e0 [ 41.545116] ? kmem_cache_alloc_node_trace+0x323/0x710 [ 41.550358] ? fib_create_info+0x3880/0x3880 [ 41.554730] ? __kmalloc_node_track_caller+0x47/0x70 [ 41.559800] ? memset+0x31/0x40 [ 41.563045] ? __alloc_skb+0x548/0x740 [ 41.566901] ? lock_acquire+0x1d5/0x580 [ 41.570838] ? lock_acquire+0x1d5/0x580 [ 41.574775] ? inet_rtm_getroute+0xaa0/0x2d40 [ 41.579235] ? lock_release+0xa40/0xa40 [ 41.583175] ? nla_parse+0x29a/0x3d0 [ 41.586859] ? check_noncircular+0x20/0x20 [ 41.591059] inet_rtm_getroute+0xfb7/0x2d40 [ 41.595345] ? debug_check_no_locks_freed+0x3c0/0x3c0 [ 41.600506] ? ipv4_sk_update_pmtu+0xa90/0xa90 [ 41.605058] ? debug_check_no_locks_freed+0x3c0/0x3c0 [ 41.610220] ? find_held_lock+0x35/0x1d0 [ 41.614261] ? lock_acquire+0x1d5/0x580 [ 41.618199] ? lock_acquire+0x1d5/0x580 [ 41.622139] ? rtnetlink_rcv+0x1b/0x40 [ 41.625989] ? debug_check_no_locks_freed+0x3c0/0x3c0 [ 41.631145] ? lock_release+0xa40/0xa40 [ 41.635085] ? check_same_owner+0x320/0x320 [ 41.639373] ? do_raw_spin_trylock+0x190/0x190 [ 41.643923] ? __might_sleep+0x95/0x190 [ 41.647865] ? rtnetlink_rcv+0x1b/0x40 [ 41.651718] ? __mutex_lock+0x16f/0x1870 [ 41.655742] ? rtnetlink_rcv+0x1b/0x40 [ 41.659593] ? trace_hardirqs_on_caller+0x421/0x5c0 [ 41.664576] ? rtnetlink_rcv+0x1b/0x40 [ 41.668436] ? netlink_lookup+0x5f7/0xa90 [ 41.672560] ? netlink_lookup+0x620/0xa90 [ 41.676677] ? ipv4_sk_update_pmtu+0xa90/0xa90 [ 41.681225] rtnetlink_rcv_msg+0x5ea/0x840 [ 41.685431] ? rtnl_newlink+0x1b00/0x1b00 [ 41.689545] ? netlink_deliver_tap+0x176/0xa60 [ 41.694100] ? iov_iter_advance+0x2a1/0x13f0 [ 41.698483] ? sock_has_perm+0x29c/0x400 [ 41.702513] netlink_rcv_skb+0x216/0x440 [ 41.706540] ? rtnl_newlink+0x1b00/0x1b00 [ 41.710659] ? netlink_ack+0xab0/0xab0 [ 41.714517] ? netlink_skb_destructor+0x1d0/0x1d0 [ 41.719330] rtnetlink_rcv+0x2a/0x40 [ 41.723010] netlink_unicast+0x4e8/0x6f0 [ 41.727037] ? netlink_attachskb+0x8a0/0x8a0 [ 41.731414] ? security_netlink_send+0x81/0xb0 [ 41.735961] netlink_sendmsg+0xa4a/0xe60 [ 41.739990] ? netlink_unicast+0x6f0/0x6f0 [ 41.744208] ? security_socket_sendmsg+0x89/0xb0 [ 41.748930] ? netlink_unicast+0x6f0/0x6f0 [ 41.753131] sock_sendmsg+0xca/0x110 [ 41.756810] sock_write_iter+0x31a/0x5d0 [ 41.760838] ? sock_sendmsg+0x110/0x110 [ 41.764785] ? iov_iter_init+0xaf/0x1d0 [ 41.768729] __vfs_write+0x684/0x970 [ 41.772409] ? default_llseek+0x290/0x290 [ 41.776526] ? selinux_capset+0x100/0x100 [ 41.780645] ? selinux_file_permission+0x82/0x460 [ 41.785456] ? rw_verify_area+0xe5/0x2b0 [ 41.789482] ? __fdget_raw+0x20/0x20 [ 41.793162] vfs_write+0x189/0x510 [ 41.796667] SyS_write+0xef/0x220 [ 41.800090] ? SyS_read+0x220/0x220 [ 41.803682] ? trace_hardirqs_on_caller+0x421/0x5c0 [ 41.808668] ? trace_hardirqs_on_thunk+0x1a/0x1c [ 41.813397] entry_SYSCALL_64_fastpath+0x1f/0xbe [ 41.818117] RIP: 0033:0x43fcd9 [ 41.821273] RSP: 002b:00007fff70a420a8 EFLAGS: 00000203 ORIG_RAX: 0000000000000001 [ 41.828950] RAX: ffffffffffffffda RBX: 00000000004002c8 RCX: 000000000043fcd9 [ 41.836187] RDX: 0000000000000025 RSI: 0000000020f68fdb RDI: 0000000000000003 [ 41.843421] RBP: 0000000000000086 R08: 0000000000000000 R09: 0000000000000000 [ 41.850658] R10: 0000000000000000 R11: 0000000000000203 R12: 0000000000401640 [ 41.857896] R13: 00000000004016d0 R14: 0000000000000000 R15: 0000000000000000 [ 41.865140] 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 [ 41.884213] RIP: fib_dump_info+0x3aa/0x13b0 RSP: ffff8801d22d7068 [ 41.890495] ---[ end trace 4f5289f2f859db70 ]--- [ 41.895234] Kernel panic - not syncing: Fatal exception [ 41.900603] Dumping ftrace buffer: [ 41.904119] (ftrace buffer empty) [ 41.907889] Kernel Offset: disabled [ 41.911501] Rebooting in 86400 seconds..