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-net-kasan-gce-0,10.128.0.28' (ECDSA) to the list of known hosts. executing program syzkaller login: [ 43.396569] netlink: 13 bytes leftover after parsing attributes in process `syzkaller931796'. [ 43.397945] kasan: CONFIG_KASAN_INLINE enabled [ 43.398726] kasan: GPF could be caused by NULL-ptr deref or user memory access [ 43.399789] general protection fault: 0000 [#1] SMP KASAN [ 43.400540] Dumping ftrace buffer: [ 43.401042] (ftrace buffer empty) [ 43.401536] Modules linked in: [ 43.401970] CPU: 0 PID: 2913 Comm: syzkaller931796 Not tainted 4.13.0-rc4+ #1 [ 43.402988] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 43.404272] task: ffff8801d32ac300 task.stack: ffff8801d3698000 [ 43.405138] RIP: 0010:fib_dump_info+0x3aa/0x1470 [ 43.405840] RSP: 0018:ffff8801d369ec08 EFLAGS: 00010206 [ 43.406549] RAX: dffffc0000000000 RBX: 0000000000000000 RCX: 0000000000000000 [ 43.407666] RDX: 0000000000000006 RSI: 0000000000000002 RDI: 0000000000000030 [ 43.408673] RBP: ffff8801d369ee60 R08: ffffed003a352931 R09: ffffed003a352931 [ 43.409644] R10: 0000000000000001 R11: ffffed003a352930 R12: ffff8801d1a94975 [ 43.410609] R13: 0000000000000000 R14: ffff8801d1a94964 R15: ffff8801d1884c00 [ 43.411562] FS: 0000000001e2f880(0000) GS:ffff8801dc000000(0000) knlGS:0000000000000000 [ 43.412647] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 43.413419] CR2: 0000000020b9fff0 CR3: 00000001d787e000 CR4: 00000000001406f0 [ 43.414409] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 43.415384] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 43.416333] Call Trace: [ 43.416710] ? ip_route_input_noref+0x1e0/0x1e0 [ 43.421382] ? kmem_cache_alloc_node_trace+0x323/0x710 [ 43.426627] ? fib_create_info+0x3880/0x3880 [ 43.431003] ? __kmalloc_node_track_caller+0x47/0x70 [ 43.436075] ? memset+0x31/0x40 [ 43.439331] ? __alloc_skb+0x548/0x740 [ 43.443196] ? lock_acquire+0x1d5/0x580 [ 43.447132] ? lock_acquire+0x1d5/0x580 [ 43.451072] ? inet_rtm_getroute+0xaa0/0x2d40 [ 43.455535] ? lock_release+0xa40/0xa40 [ 43.459476] ? nla_parse+0x29a/0x3d0 [ 43.463158] ? __lock_acquire+0x6ef/0x3dc0 [ 43.467533] inet_rtm_getroute+0xfb7/0x2d40 [ 43.471829] ? rtnetlink_rcv_msg+0x65c/0x1090 [ 43.476296] ? ipv4_sk_update_pmtu+0xa90/0xa90 [ 43.480848] ? __might_sleep+0x95/0x190 [ 43.484961] ? rtnetlink_rcv_msg+0x65c/0x1090 [ 43.489420] ? __mutex_lock+0x16f/0x1870 [ 43.493444] ? rtnetlink_rcv_msg+0x65c/0x1090 [ 43.497903] ? check_noncircular+0x20/0x20 [ 43.502101] ? rtnetlink_rcv_msg+0x65c/0x1090 [ 43.506560] ? debug_check_no_locks_freed+0x3c0/0x3c0 [ 43.511714] ? mutex_lock_io_nested+0x1740/0x1740 [ 43.516528] ? __lock_acquire+0x6ef/0x3dc0 [ 43.520727] ? check_noncircular+0x20/0x20 [ 43.524927] ? check_noncircular+0x20/0x20 [ 43.529125] ? find_held_lock+0x35/0x1d0 [ 43.533152] ? __lock_acquire+0x6ef/0x3dc0 [ 43.537357] ? check_noncircular+0x20/0x20 [ 43.541566] ? find_held_lock+0x35/0x1d0 [ 43.545601] ? check_noncircular+0x20/0x20 [ 43.549824] ? ipv4_sk_update_pmtu+0xa90/0xa90 [ 43.554371] rtnetlink_rcv_msg+0x733/0x1090 [ 43.558662] ? rtnl_calcit.isra.23+0x4f0/0x4f0 [ 43.563207] ? trace_hardirqs_on+0xd/0x10 [ 43.567322] ? check_noncircular+0x20/0x20 [ 43.571525] ? find_held_lock+0x35/0x1d0 [ 43.575593] ? netlink_lookup+0x5f7/0xa90 [ 43.579707] ? find_held_lock+0x35/0x1d0 [ 43.583736] ? ipv4_sk_update_pmtu+0xa90/0xa90 [ 43.588293] ? lock_downgrade+0x990/0x990 [ 43.592408] ? lock_release+0xa40/0xa40 [ 43.596527] ? netlink_lookup+0x620/0xa90 [ 43.600644] ? ipv4_sk_update_pmtu+0xa90/0xa90 [ 43.605190] ? netlink_connect+0x4e0/0x4e0 [ 43.609391] ? netlink_deliver_tap+0x176/0xa60 [ 43.613939] ? iov_iter_advance+0x2a1/0x13f0 [ 43.618320] ? sock_has_perm+0x29c/0x400 [ 43.622347] netlink_rcv_skb+0x216/0x440 [ 43.626374] ? rtnl_calcit.isra.23+0x4f0/0x4f0 [ 43.630936] ? netlink_ack+0xab0/0xab0 [ 43.634789] ? netlink_skb_destructor+0x1d0/0x1d0 [ 43.639597] ? selinux_nlmsg_lookup+0x32b/0x430 [ 43.644246] rtnetlink_rcv+0x1c/0x20 [ 43.647923] netlink_unicast+0x4e8/0x6f0 [ 43.651953] ? netlink_attachskb+0x8a0/0x8a0 [ 43.656339] ? security_netlink_send+0x81/0xb0 [ 43.660896] netlink_sendmsg+0xa4a/0xe60 [ 43.664928] ? netlink_unicast+0x6f0/0x6f0 [ 43.669129] ? security_socket_sendmsg+0x89/0xb0 [ 43.673848] ? netlink_unicast+0x6f0/0x6f0 [ 43.678052] sock_sendmsg+0xca/0x110 [ 43.681735] sock_write_iter+0x31a/0x5d0 [ 43.685776] ? sock_sendmsg+0x110/0x110 [ 43.689733] ? selinux_capset+0x100/0x100 [ 43.694037] ? __might_sleep+0x3c/0x190 [ 43.697988] do_iter_readv_writev+0x525/0x7f0 [ 43.702450] ? vfs_dedupe_file_range+0x900/0x900 [ 43.707182] ? rw_verify_area+0xe5/0x2b0 [ 43.711218] do_iter_write+0x154/0x540 [ 43.715073] ? dup_iter+0x260/0x260 [ 43.718671] vfs_writev+0x18a/0x340 [ 43.722265] ? __fget_light+0x297/0x380 [ 43.726204] ? vfs_iter_write+0xb0/0xb0 [ 43.730141] ? lock_acquire+0x1d5/0x580 [ 43.734077] ? lock_acquire+0x1d5/0x580 [ 43.738024] ? __fdget_pos+0x130/0x190 [ 43.741876] ? __fdget_raw+0x20/0x20 [ 43.745559] ? down_read_trylock+0xdb/0x170 [ 43.749847] do_writev+0xfc/0x2a0 [ 43.753266] ? do_writev+0xfc/0x2a0 [ 43.756861] ? vfs_writev+0x340/0x340 [ 43.760635] ? entry_SYSCALL_64_fastpath+0x5/0xbe [ 43.765534] ? trace_hardirqs_on_caller+0x421/0x5c0 [ 43.770526] SyS_writev+0x27/0x30 [ 43.773954] entry_SYSCALL_64_fastpath+0x1f/0xbe [ 43.778673] RIP: 0033:0x43fd19 [ 43.781932] RSP: 002b:00007ffd26975ff8 EFLAGS: 00000203 ORIG_RAX: 0000000000000014 [ 43.789608] RAX: ffffffffffffffda RBX: 00000000004002c8 RCX: 000000000043fd19 [ 43.796848] RDX: 0000000000000001 RSI: 0000000020b9fff0 RDI: 0000000000000003 [ 43.804258] RBP: 0000000000000086 R08: 0000000000000000 R09: 0000000000000000 [ 43.811582] R10: 0000000000000000 R11: 0000000000000203 R12: 0000000000401680 [ 43.818906] R13: 0000000000401710 R14: 0000000000000000 R15: 0000000000000000 [ 43.826151] 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 8d 0e 00 00 48 8b 45 28 44 [ 43.845221] RIP: fib_dump_info+0x3aa/0x1470 RSP: ffff8801d369ec08 [ 43.851485] ---[ end trace cd0e41411accda1f ]--- [ 43.856223] Kernel panic - not syncing: Fatal exception [ 43.861906] Dumping ftrace buffer: [ 43.865412] (ftrace buffer empty) [ 43.869091] Kernel Offset: disabled [ 43.872689] Rebooting in 86400 seconds..