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-5,10.128.0.13' (ECDSA) to the list of known hosts. executing program syzkaller login: [ 38.057325] netlink: 6 bytes leftover after parsing attributes in process `syzkaller244076'. [ 38.058734] kasan: CONFIG_KASAN_INLINE enabled [ 38.059602] kasan: GPF could be caused by NULL-ptr deref or user memory access [ 38.060602] general protection fault: 0000 [#1] SMP KASAN [ 38.061335] Dumping ftrace buffer: [ 38.061809] (ftrace buffer empty) [ 38.062303] Modules linked in: [ 38.062744] CPU: 1 PID: 2913 Comm: syzkaller244076 Not tainted 4.13.0-rc4+ #26 [ 38.063706] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 38.064978] task: ffff8801d2f74040 task.stack: ffff8801c16f0000 [ 38.065778] RIP: 0010:fib_dump_info+0x3aa/0x13b0 [ 38.066415] RSP: 0018:ffff8801c16f7068 EFLAGS: 00010206 [ 38.067134] RAX: dffffc0000000000 RBX: 00000000000000fe RCX: 0000000000000000 [ 38.068102] RDX: 0000000000000006 RSI: 0000000000000002 RDI: 0000000000000030 [ 38.069070] RBP: ffff8801c16f72c0 R08: ffffed003a33d869 R09: ffffed003a33d869 [ 38.070030] R10: 0000000000000001 R11: ffffed003a33d868 R12: ffff8801d19ec335 [ 38.070998] R13: 00000000000000fb R14: ffff8801d19ec324 R15: ffff8801da2c2480 [ 38.071962] FS: 000000000133a880(0000) GS:ffff8801dc100000(0000) knlGS:0000000000000000 [ 38.073035] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 38.073806] CR2: 0000000020605fde CR3: 00000001d7d8e000 CR4: 00000000001406e0 [ 38.074791] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 38.075754] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 38.076721] Call Trace: [ 38.077083] ? ip_route_input_noref+0x1e0/0x1e0 [ 38.077703] ? kmem_cache_alloc_node_trace+0x323/0x710 [ 38.082949] ? fib_create_info+0x3880/0x3880 [ 38.087327] ? __kmalloc_node_track_caller+0x47/0x70 [ 38.092394] ? memset+0x31/0x40 [ 38.095640] ? __alloc_skb+0x548/0x740 [ 38.099491] ? lock_acquire+0x1d5/0x580 [ 38.103428] ? lock_acquire+0x1d5/0x580 [ 38.107364] ? inet_rtm_getroute+0xaa0/0x2d40 [ 38.111831] ? lock_release+0xa40/0xa40 [ 38.115771] ? nla_parse+0x29a/0x3d0 [ 38.119453] ? check_noncircular+0x20/0x20 [ 38.124166] inet_rtm_getroute+0xfb7/0x2d40 [ 38.128454] ? debug_check_no_locks_freed+0x3c0/0x3c0 [ 38.133610] ? ipv4_sk_update_pmtu+0xa90/0xa90 [ 38.138156] ? debug_check_no_locks_freed+0x3c0/0x3c0 [ 38.143317] ? find_held_lock+0x35/0x1d0 [ 38.147347] ? lock_acquire+0x1d5/0x580 [ 38.151283] ? lock_acquire+0x1d5/0x580 [ 38.155224] ? rtnetlink_rcv+0x1b/0x40 [ 38.159073] ? debug_check_no_locks_freed+0x3c0/0x3c0 [ 38.164228] ? lock_release+0xa40/0xa40 [ 38.168167] ? check_same_owner+0x320/0x320 [ 38.172453] ? do_raw_spin_trylock+0x190/0x190 [ 38.177000] ? __might_sleep+0x95/0x190 [ 38.180939] ? rtnetlink_rcv+0x1b/0x40 [ 38.184790] ? __mutex_lock+0x16f/0x1870 [ 38.188814] ? rtnetlink_rcv+0x1b/0x40 [ 38.192665] ? trace_hardirqs_on_caller+0x421/0x5c0 [ 38.197647] ? rtnetlink_rcv+0x1b/0x40 [ 38.201507] ? netlink_lookup+0x5f7/0xa90 [ 38.205631] ? netlink_lookup+0x620/0xa90 [ 38.209744] ? ipv4_sk_update_pmtu+0xa90/0xa90 [ 38.214296] rtnetlink_rcv_msg+0x5ea/0x840 [ 38.218496] ? rtnl_newlink+0x1b00/0x1b00 [ 38.222605] ? netlink_deliver_tap+0x176/0xa60 [ 38.227323] ? iov_iter_advance+0x2a1/0x13f0 [ 38.231702] ? sock_has_perm+0x29c/0x400 [ 38.235735] netlink_rcv_skb+0x216/0x440 [ 38.239762] ? rtnl_newlink+0x1b00/0x1b00 [ 38.243873] ? netlink_ack+0xab0/0xab0 [ 38.247728] ? netlink_skb_destructor+0x1d0/0x1d0 [ 38.252541] rtnetlink_rcv+0x2a/0x40 [ 38.256219] netlink_unicast+0x4e8/0x6f0 [ 38.260248] ? netlink_attachskb+0x8a0/0x8a0 [ 38.264626] ? security_netlink_send+0x81/0xb0 [ 38.269174] netlink_sendmsg+0xa4a/0xe60 [ 38.273203] ? netlink_unicast+0x6f0/0x6f0 [ 38.277405] ? security_socket_sendmsg+0x89/0xb0 [ 38.282136] ? netlink_unicast+0x6f0/0x6f0 [ 38.286335] sock_sendmsg+0xca/0x110 [ 38.290022] sock_write_iter+0x31a/0x5d0 [ 38.294053] ? sock_sendmsg+0x110/0x110 [ 38.298001] ? iov_iter_init+0xaf/0x1d0 [ 38.301942] __vfs_write+0x684/0x970 [ 38.305620] ? default_llseek+0x290/0x290 [ 38.309733] ? selinux_capset+0x100/0x100 [ 38.313851] ? selinux_file_permission+0x82/0x460 [ 38.318658] ? rw_verify_area+0xe5/0x2b0 [ 38.322682] ? __fdget_raw+0x20/0x20 [ 38.326361] vfs_write+0x189/0x510 [ 38.329867] SyS_write+0xef/0x220 [ 38.333285] ? SyS_read+0x220/0x220 [ 38.336879] ? trace_hardirqs_on_caller+0x421/0x5c0 [ 38.341860] ? trace_hardirqs_on_thunk+0x1a/0x1c [ 38.346598] entry_SYSCALL_64_fastpath+0x1f/0xbe [ 38.351315] RIP: 0033:0x43fcd9 [ 38.354467] RSP: 002b:00007ffde7a0b318 EFLAGS: 00000203 ORIG_RAX: 0000000000000001 [ 38.362138] RAX: ffffffffffffffda RBX: 00000000004002c8 RCX: 000000000043fcd9 [ 38.369375] RDX: 0000000000000022 RSI: 0000000020605fde RDI: 0000000000000003 [ 38.376619] RBP: 0000000000000086 R08: 0000000000000000 R09: 0000000000000000 [ 38.383854] R10: 0000000000000000 R11: 0000000000000203 R12: 0000000000401640 [ 38.391158] R13: 00000000004016d0 R14: 0000000000000000 R15: 0000000000000000 [ 38.398401] 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 [ 38.417466] RIP: fib_dump_info+0x3aa/0x13b0 RSP: ffff8801c16f7068 [ 38.423809] ---[ end trace fa8560bc5c0b2635 ]--- [ 38.428556] Kernel panic - not syncing: Fatal exception [ 38.434264] Dumping ftrace buffer: [ 38.437767] (ftrace buffer empty) [ 38.441442] Kernel Offset: disabled [ 38.445033] Rebooting in 86400 seconds..