[?25l[?1c7[ ok 8[?25h[?0c. [....] Starting periodic command scheduler: cron[?25l[?1c7[ ok 8[?25h[?0c. Starting mcstransd: [ 9.853620] random: sshd: uninitialized urandom read (32 bytes read) [....] Starting file context maintaining daemon: restorecond[?25l[?1c7[ ok 8[?25h[?0c. [....] Starting OpenBSD Secure Shell server: sshd[?25l[?1c7[ ok 8[?25h[?0c. Debian GNU/Linux 7 syzkaller ttyS0 syzkaller login: [ 26.338924] random: crng init done Warning: Permanently added '10.128.0.40' (ECDSA) to the list of known hosts. executing program executing program executing program executing program executing program executing program executing program executing program [ 49.049994] kasan: CONFIG_KASAN_INLINE enabled [ 49.054588] kasan: GPF could be caused by NULL-ptr deref or user memory access [ 49.061999] general protection fault: 0000 [#1] PREEMPT SMP KASAN [ 49.068213] Modules linked in: [ 49.071503] CPU: 0 PID: 64 Comm: kworker/u4:1 Not tainted 4.9.140+ #3 [ 49.078061] Workqueue: netns cleanup_net [ 49.082217] task: ffff8801d786af80 task.stack: ffff8801d79a8000 [ 49.088244] RIP: 0010:[] [] addrconf_rt_table+0x127/0x290 [ 49.097094] RSP: 0018:ffff8801d79af510 EFLAGS: 00010206 [ 49.102532] RAX: dffffc0000000000 RBX: 0000000000000200 RCX: 0000000000000004 [ 49.109775] RDX: 0000000000000056 RSI: 0000000000000004 RDI: 00000000000002b0 [ 49.117021] RBP: ffff8801d79af540 R08: ffff8801d786b830 R09: 0000000000000001 [ 49.124272] R10: 0000000000000000 R11: 0000000000000001 R12: 0000000000000000 [ 49.131517] R13: 00000000000000fe R14: ffff8801ce8a2200 R15: ffff8801ce9b2b90 [ 49.138765] FS: 0000000000000000(0000) GS:ffff8801db600000(0000) knlGS:0000000000000000 [ 49.147050] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 49.152911] CR2: 00000000004a20fd CR3: 00000001ce4ce000 CR4: 00000000001606b0 [ 49.160165] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 49.167418] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 49.174663] Stack: [ 49.176789] ffffffff826bcee0 ffff8801ce8a2200 0000000000000000 ffff8801cef01e80 [ 49.184798] ffff8801ce748900 ffff8801ce9b2b90 ffff8801d79af588 ffffffff826bd8f3 [ 49.192840] 00000000ce7487b8 ffff880100000080 ffff8801ce9b2a00 ffff8801ce9b2b90 [ 49.200864] Call Trace: [ 49.203558] [] ? addrconf_leave_solict+0x90/0x90 [ 49.209985] [] addrconf_get_prefix_route+0x33/0x270 [ 49.216637] [] __ipv6_ifa_notify+0x5d8/0x790 [ 49.222676] [] addrconf_ifdown+0xaae/0x1420 [ 49.228632] [] ? add_addr+0x180/0x180 [ 49.234060] [] addrconf_notify+0x8ee/0x2140 [ 49.240008] [] ? inet6_ifinfo_notify+0x140/0x140 [ 49.246390] [] notifier_call_chain+0xb4/0x1d0 [ 49.252509] [] raw_notifier_call_chain+0x2d/0x40 [ 49.258889] [] call_netdevice_notifiers_info+0x55/0x70 [ 49.265870] [] rollback_registered_many+0x6e5/0xb50 [ 49.272517] [] ? free_netdev+0x300/0x300 [ 49.278260] [] ? mark_held_locks+0xc7/0x130 [ 49.284218] [] ? _raw_spin_unlock_irqrestore+0x5a/0x70 [ 49.291125] [] unregister_netdevice_many+0x48/0x220 [ 49.297767] [] default_device_exit_batch+0x33f/0x3f0 [ 49.304504] [] ? unregister_netdevice_many+0x220/0x220 [ 49.311404] [] ? rtnl_unlock+0xe/0x10 [ 49.316829] [] ? default_device_exit+0x1c4/0x260 [ 49.323335] [] ? prepare_to_wait_event+0x8c0/0x8c0 [ 49.329910] [] ? unregister_netdevice_many+0x220/0x220 [ 49.336937] [] ? dev_change_net_namespace+0xb80/0xb80 [ 49.343762] [] ops_exit_list.isra.0+0x105/0x160 [ 49.350063] [] cleanup_net+0x3f2/0x8b0 [ 49.355579] [] ? net_drop_ns+0x80/0x80 [ 49.361092] [] ? debug_lockdep_rcu_enabled+0x77/0x90 [ 49.367822] [] ? debug_object_deactivate+0x214/0x340 [ 49.374558] [] ? check_preemption_disabled+0x3b/0x200 [ 49.381378] [] process_one_work+0x831/0x15f0 [ 49.387410] [] ? process_one_work+0x774/0x15f0 [ 49.393628] [] ? cancel_delayed_work_sync+0x20/0x20 [ 49.400360] [] worker_thread+0xd6/0x1140 [ 49.406049] [] ? ___preempt_schedule+0x16/0x18 [ 49.412343] [] kthread+0x26d/0x300 [ 49.417506] [] ? process_one_work+0x15f0/0x15f0 [ 49.423808] [] ? kthread_park+0xa0/0xa0 [ 49.429412] [] ? __switch_to_asm+0x34/0x70 [ 49.435277] [] ? kthread_park+0xa0/0xa0 [ 49.440884] [] ? kthread_park+0xa0/0xa0 [ 49.446482] [] ret_from_fork+0x5c/0x70 [ 49.451989] Code: 82 be 01 00 00 00 48 c7 c7 60 c3 0c 83 e8 92 fb b4 fe 49 8d bc 24 b0 02 00 00 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 34 01 00 00 45 8b bc 24 b0 [ 49.479272] RIP [] addrconf_rt_table+0x127/0x290 [ 49.485796] RSP [ 49.489658] ---[ end trace 3bbd07baf6f59b6c ]--- [ 49.494398] Kernel panic - not syncing: Fatal exception [ 49.500350] Kernel Offset: disabled [ 49.503968] Rebooting in 86400 seconds..