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-5,10.128.15.213' (ECDSA) to the list of known hosts. executing program syzkaller login: [ 49.613792] netlink: 1 bytes leftover after parsing attributes in process `syzkaller479706'. [ 49.615162] kasan: CONFIG_KASAN_INLINE enabled [ 49.615789] kasan: GPF could be caused by NULL-ptr deref or user memory access [ 49.616981] general protection fault: 0000 [#1] SMP KASAN [ 49.617725] Dumping ftrace buffer: [ 49.618202] (ftrace buffer empty) [ 49.618696] Modules linked in: [ 49.619130] CPU: 1 PID: 3006 Comm: syzkaller479706 Not tainted 4.13.0-rc5+ #42 [ 49.620092] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 49.621311] task: ffff8801d19e23c0 task.stack: ffff8801d00b8000 [ 49.622116] RIP: 0010:fib_dump_info+0x3aa/0x13b0 [ 49.622747] RSP: 0018:ffff8801d00beeb0 EFLAGS: 00010206 [ 49.623454] RAX: dffffc0000000000 RBX: 00000000000000fe RCX: 0000000000000000 [ 49.624422] RDX: 0000000000000006 RSI: 0000000000000002 RDI: 0000000000000030 [ 49.625371] RBP: ffff8801d00bf108 R08: ffffed003a040149 R09: ffffed003a040149 [ 49.626368] R10: 0000000000000001 R11: ffffed003a040148 R12: ffff8801d0200a35 [ 49.627318] R13: 0000000000000099 R14: ffff8801d0200a24 R15: ffff8801d12aadc0 [ 49.628269] FS: 0000000000717880(0000) GS:ffff8801db300000(0000) knlGS:0000000000000000 [ 49.629372] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 49.630177] CR2: 0000000020b9b000 CR3: 00000001cf6fb000 CR4: 00000000001406e0 [ 49.631128] Call Trace: [ 49.631484] ? ip_route_input_noref+0x1e0/0x1e0 [ 49.632109] ? fib_create_info+0x38d0/0x38d0 [ 49.632700] ? __kmalloc_node_track_caller+0x47/0x70 [ 49.633376] ? memset+0x31/0x40 [ 49.633824] ? lock_acquire+0x1d5/0x580 [ 49.634354] ? lock_acquire+0x1d5/0x580 [ 49.638294] ? inet_rtm_getroute+0xaa0/0x2d60 [ 49.642757] ? lock_release+0xa40/0xa40 [ 49.646698] ? nla_parse+0x29a/0x3d0 [ 49.650382] inet_rtm_getroute+0xf9c/0x2d60 [ 49.654672] ? debug_check_no_locks_freed+0x3c0/0x3c0 [ 49.659839] ? ipv4_sk_update_pmtu+0xa90/0xa90 [ 49.664387] ? debug_check_no_locks_freed+0x3c0/0x3c0 [ 49.669550] ? lock_acquire+0x1d5/0x580 [ 49.673487] ? lock_acquire+0x1d5/0x580 [ 49.677430] ? rtnetlink_rcv+0x1b/0x40 [ 49.681283] ? debug_check_no_locks_freed+0x3c0/0x3c0 [ 49.686437] ? lock_release+0xa40/0xa40 [ 49.690392] ? check_same_owner+0x320/0x320 [ 49.694681] ? do_raw_spin_trylock+0x190/0x190 [ 49.699229] ? __might_sleep+0x95/0x190 [ 49.703176] ? rtnetlink_rcv+0x1b/0x40 [ 49.707038] ? __mutex_lock+0x16f/0x1870 [ 49.711063] ? rtnetlink_rcv+0x1b/0x40 [ 49.714919] ? rtnetlink_rcv+0x1b/0x40 [ 49.718783] ? netlink_lookup+0x5f7/0xa90 [ 49.722908] ? netlink_lookup+0x620/0xa90 [ 49.727024] ? ipv4_sk_update_pmtu+0xa90/0xa90 [ 49.731570] rtnetlink_rcv_msg+0x5ea/0x840 [ 49.735771] ? rtnl_newlink+0x1b00/0x1b00 [ 49.739888] ? netlink_deliver_tap+0x176/0xa60 [ 49.744440] ? iov_iter_advance+0x2a1/0x13f0 [ 49.748816] ? sock_has_perm+0x29c/0x400 [ 49.752841] netlink_rcv_skb+0x216/0x440 [ 49.756871] ? rtnl_newlink+0x1b00/0x1b00 [ 49.760986] ? netlink_ack+0xab0/0xab0 [ 49.764840] ? netlink_skb_destructor+0x1d0/0x1d0 [ 49.769649] rtnetlink_rcv+0x2a/0x40 [ 49.773330] netlink_unicast+0x4e8/0x6f0 [ 49.777360] ? netlink_attachskb+0x8a0/0x8a0 [ 49.781739] ? security_netlink_send+0x81/0xb0 [ 49.786288] netlink_sendmsg+0xa4a/0xe60 [ 49.790328] ? netlink_unicast+0x6f0/0x6f0 [ 49.794531] ? security_socket_sendmsg+0x89/0xb0 [ 49.799251] ? netlink_unicast+0x6f0/0x6f0 [ 49.803453] sock_sendmsg+0xca/0x110 [ 49.807137] sock_write_iter+0x31a/0x5d0 [ 49.811170] ? sock_sendmsg+0x110/0x110 [ 49.815119] ? selinux_capset+0x100/0x100 [ 49.819240] ? ___might_sleep+0x46c/0x470 [ 49.823361] do_iter_readv_writev+0x525/0x7f0 [ 49.827828] ? vfs_dedupe_file_range+0x900/0x900 [ 49.832563] ? rw_verify_area+0xe5/0x2b0 [ 49.836591] do_iter_write+0x154/0x540 [ 49.840445] ? dup_iter+0x260/0x260 [ 49.844040] ? __pmd_alloc+0x4e0/0x4e0 [ 49.847892] ? __lock_is_held+0xb6/0x140 [ 49.851921] vfs_writev+0x18a/0x340 [ 49.855512] ? __fget_light+0x297/0x380 [ 49.859468] ? vfs_iter_write+0xb0/0xb0 [ 49.863419] ? handle_mm_fault+0x23e/0x860 [ 49.867629] ? __fdget_pos+0x130/0x190 [ 49.871481] ? __fdget_raw+0x20/0x20 [ 49.875159] ? handle_mm_fault+0x4a2/0x860 [ 49.879360] ? down_read_trylock+0xdb/0x170 [ 49.883645] do_writev+0xfc/0x2a0 [ 49.887063] ? do_writev+0xfc/0x2a0 [ 49.890657] ? vfs_writev+0x340/0x340 [ 49.894433] ? entry_SYSCALL_64_fastpath+0x5/0xbe [ 49.899246] ? trace_hardirqs_on_caller+0x421/0x5c0 [ 49.904238] SyS_writev+0x27/0x30 [ 49.907661] entry_SYSCALL_64_fastpath+0x1f/0xbe [ 49.912382] RIP: 0033:0x43fd09 [ 49.915541] RSP: 002b:00007ffd5593e4f8 EFLAGS: 00000203 ORIG_RAX: 0000000000000014 [ 49.923213] RAX: ffffffffffffffda RBX: 00000000004002c8 RCX: 000000000043fd09 [ 49.930449] RDX: 0000000000000001 RSI: 0000000020b93000 RDI: 0000000000000003 [ 49.937687] RBP: 0000000000000086 R08: 0000000000000000 R09: 0000000000000000 [ 49.944924] R10: 0000000000000000 R11: 0000000000000203 R12: 0000000000401670 [ 49.952161] R13: 0000000000401700 R14: 0000000000000000 R15: 0000000000000000 [ 49.959409] 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 [ 49.978507] RIP: fib_dump_info+0x3aa/0x13b0 RSP: ffff8801d00beeb0 [ 49.984794] ---[ end trace a8418f8a7cf5c5b9 ]--- [ 49.989535] Kernel panic - not syncing: Fatal exception [ 49.995130] Dumping ftrace buffer: [ 49.998635] (ftrace buffer empty) [ 50.002312] Kernel Offset: disabled [ 50.005904] Rebooting in 86400 seconds..