[?25l[?1c7[ ok 8[?25h[?0c. Starting mcstransd: [ 10.797910] random: crng init done [....] Starting file context maintaining daemon: restorecond[?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 '10.128.0.171' (ECDSA) to the list of known hosts. executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program syzkaller login: [ 18.525575] IPv6: ADDRCONF(NETDEV_CHANGE): lo: link becomes ready [ 18.527110] IPv6: ADDRCONF(NETDEV_CHANGE): lo: link becomes ready [ 18.528299] IPv6: ADDRCONF(NETDEV_CHANGE): lo: link becomes ready [ 18.530560] IPv6: ADDRCONF(NETDEV_CHANGE): lo: link becomes ready [ 18.532244] IPv6: ADDRCONF(NETDEV_CHANGE): lo: link becomes ready [ 18.535853] IPv6: ADDRCONF(NETDEV_CHANGE): lo: link becomes ready [ 18.540625] IPv6: ADDRCONF(NETDEV_CHANGE): lo: link becomes ready [ 18.558011] IPv6: ADDRCONF(NETDEV_CHANGE): lo: link becomes ready executing program [ 18.575961] IPv6: ADDRCONF(NETDEV_CHANGE): lo: link becomes ready [ 18.592753] IPv6: ADDRCONF(NETDEV_CHANGE): lo: link becomes ready [ 18.608679] IPv6: ADDRCONF(NETDEV_CHANGE): lo: link becomes ready [ 18.616379] IPv6: ADDRCONF(NETDEV_CHANGE): lo: link becomes ready executing program [ 18.629398] IPv6: ADDRCONF(NETDEV_CHANGE): lo: link becomes ready [ 18.644975] ------------[ cut here ]------------ [ 18.649782] WARNING: CPU: 1 PID: 2069 at lib/debugobjects.c:260 debug_print_object+0x181/0x210 [ 18.658525] ODEBUG: activate active (active state 1) object type: rcu_head hint: (null) [ 18.667553] Kernel panic - not syncing: panic_on_warn set ... [ 18.667553] [ 18.674920] CPU: 1 PID: 2069 Comm: syz-executor540 Not tainted 4.9.194+ #0 [ 18.682031] ffff8801cec66590 ffffffff81b67001 ffff8801cec66600 ffffffff82a3b3c0 [ 18.690101] 00000000ffffffff 0000000000000001 0000000000000009 ffff8801cec66670 [ 18.698155] ffffffff813fef3a 0000000041b58ab3 ffffffff82e32f55 ffffffff813fed61 [ 18.706199] Call Trace: [ 18.708782] [<000000008eb2c42a>] dump_stack+0xc1/0x120 [ 18.714141] [<000000006283bf7b>] panic+0x1d9/0x3bd [ 18.719155] [<00000000d7789122>] ? add_taint.cold+0x16/0x16 [ 18.724968] [<00000000befa46ad>] ? vprintk_emit+0x277/0x6f0 [ 18.730765] [<00000000be15963f>] ? __warn.cold+0x14/0x2f [ 18.736297] [<000000005dea4f44>] ? debug_print_object+0x181/0x210 [ 18.742611] [<00000000db36c619>] __warn.cold+0x2f/0x2f [ 18.747967] [<000000002888743d>] ? entry_SYSCALL_64_after_swapgs+0x5d/0xdb [ 18.755066] [<000000002079bb5c>] warn_slowpath_fmt+0xc2/0x100 [ 18.761033] [<00000000e821e7b3>] ? __warn+0x1b0/0x1b0 [ 18.766304] [<00000000ffb57782>] ? __wake_up+0x1e/0x50 [ 18.771687] [<000000005dea4f44>] debug_print_object+0x181/0x210 [ 18.777827] [<000000001a83b726>] debug_object_activate+0x361/0x4f0 [ 18.784228] [<000000006d702a3f>] ? debug_object_assert_init+0x2f0/0x2f0 [ 18.791062] [<000000004911aa04>] ? netlink_broadcast+0x44/0x60 [ 18.797120] [<0000000020506b44>] ? ip6_route_cleanup+0x70/0x70 [ 18.803184] [<00000000a9dbcf04>] __call_rcu.constprop.0+0x35/0x8f0 [ 18.809585] [<000000005a29a82c>] ? rtnl_notify+0xb9/0xe0 [ 18.815114] [<0000000041a21068>] call_rcu+0x12/0x20 [ 18.820210] [<00000000aa913362>] rt6_release+0x1ed/0x270 [ 18.825743] [<000000000b066772>] fib6_del+0x76f/0xb20 [ 18.831014] [<00000000a82e28d7>] fib6_clean_node+0x29c/0x4d0 [ 18.836896] [<0000000058a54c24>] ? fib6_del+0xb20/0xb20 [ 18.842347] [<0000000043e0efd4>] ? mark_held_locks+0xb1/0x100 [ 18.848319] [<00000000e4bd6384>] ? __local_bh_enable_ip+0x6a/0xe0 [ 18.854634] [<000000003988bcc8>] ? trace_hardirqs_on_caller+0x260/0x5a0 [ 18.861466] [<00000000c1880fa2>] ? fib6_walker_link+0xf6/0x140 [ 18.867522] [<00000000793bfea6>] fib6_walk_continue+0x3e0/0x630 [ 18.873660] [<00000000ac84975d>] fib6_walk+0x9d/0xf0 [ 18.878857] [<000000001d2e18cb>] ? fib6_remove_prefsrc+0x240/0x240 [ 18.885256] [<000000002bf4dda2>] fib6_clean_tree+0xe7/0x120 [ 18.891054] [<00000000b5f2bd30>] ? fib6_walk+0xf0/0xf0 [ 18.896412] [<0000000058a54c24>] ? fib6_del+0xb20/0xb20 [ 18.901863] [<000000001d2e18cb>] ? fib6_remove_prefsrc+0x240/0x240 [ 18.908267] [<000000005137b72d>] __fib6_clean_all+0xfb/0x230 [ 18.914232] [<000000008bfe829b>] ? fib6_clean_tree+0x120/0x120 [ 18.920295] [<000000001d2e18cb>] ? fib6_remove_prefsrc+0x240/0x240 [ 18.926697] [<000000001d2e18cb>] ? fib6_remove_prefsrc+0x240/0x240 [ 18.933095] [<00000000db6d692b>] fib6_clean_all+0x28/0x30 [ 18.938716] [<00000000dd225461>] rt6_ifdown+0xa8/0x810 [ 18.944075] [<00000000dd65e9fc>] ? _raw_spin_unlock_irqrestore+0x45/0x70 [ 18.951004] [<000000006f4bd2ca>] ? consume_skb+0xd3/0x340 [ 18.956628] [<00000000464a7f73>] ? rt6_clean_tohost+0x30/0x30 [ 18.962611] [<000000004b43ba1f>] addrconf_ifdown+0xd0/0x14d0 [ 18.968494] [<00000000a454d2a8>] ? nlmsg_notify+0xd7/0x170 [ 18.974216] [<00000000bcecbecb>] ? add_addr+0x190/0x190 [ 18.979662] [<000000005a29a82c>] ? rtnl_notify+0xb9/0xe0 [ 18.985200] [<00000000417c7390>] addrconf_notify+0x7ac/0x1f50 [ 18.991171] [<00000000c43e97da>] ? rtnl_is_locked+0x9/0x20 [ 18.996873] [<00000000dfed4802>] ? inetdev_event+0x165/0x10c0 [ 19.002839] [<000000004d259ac4>] ? inet6_ifinfo_notify+0x140/0x140 [ 19.009241] [<00000000a4e78bb6>] ? igmp_netdev_event+0x27/0x580 [ 19.015385] [<000000005ccb9ea5>] notifier_call_chain+0xb4/0x1d0 [ 19.021530] [<000000004ee3f5ab>] raw_notifier_call_chain+0x2e/0x40 [ 19.027931] [<00000000cea66204>] call_netdevice_notifiers_info+0x56/0x70 [ 19.034866] [<000000004d39cb67>] netdev_state_change+0xdd/0x100 [ 19.041008] [<0000000025c1a143>] ? dev_get_valid_name+0x160/0x160 [ 19.047326] [<0000000061eeca34>] ? dev_change_flags+0xfc/0x140 [ 19.053383] [<00000000c3852b72>] do_setlink+0x24c7/0x2dc0 [ 19.059007] [<0000000011efe810>] ? unwind_get_return_address+0xec/0x180 [ 19.065848] [<000000001a056dd1>] ? __unwind_start+0x400/0x400 [ 19.071816] [<00000000a700964e>] ? rtnl_link_get_net+0x150/0x150 [ 19.078048] [<000000000b3ce50a>] ? trace_hardirqs_on+0x10/0x10 [ 19.084099] [<000000000b3ce50a>] ? trace_hardirqs_on+0x10/0x10 [ 19.090170] [<000000002ee6ee3f>] ? debug_lockdep_rcu_enabled+0x71/0xa0 [ 19.096921] [<000000009b863637>] ? check_preemption_disabled+0x3c/0x200 [ 19.103752] [<00000000d0c2e12f>] ? avc_has_perm_noaudit+0x179/0x300 [ 19.110239] [<000000000fca54b2>] ? avc_has_perm_noaudit+0x1a0/0x300 [ 19.116733] [<00000000805d6b12>] ? avc_has_perm_noaudit+0x9e/0x300 [ 19.123137] [<000000003f5539e3>] ? validate_nla+0x1c0/0x4d0 [ 19.128931] [<000000007ab4c031>] ? nla_parse+0x15f/0x1c0 [ 19.134448] [<00000000c8d268ac>] rtnl_setlink+0x210/0x310 [ 19.140950] [<0000000048bf2047>] ? do_setlink+0x2dc0/0x2dc0 [ 19.146766] [<000000009c0382e0>] ? ns_capable_common+0x12c/0x160 [ 19.152976] [<00000000cb1a9466>] ? ns_capable+0x10/0x30 [ 19.158404] [<00000000c3474a93>] ? __netlink_ns_capable+0xe2/0x130 [ 19.164788] [<0000000048bf2047>] ? do_setlink+0x2dc0/0x2dc0 [ 19.170561] [<00000000b3638839>] rtnetlink_rcv_msg+0x506/0x6e0 [ 19.176600] [<00000000205c5751>] ? rtnl_newlink+0x1540/0x1540 [ 19.182547] [<000000001bfc36f7>] ? mutex_lock_nested+0x5de/0x920 [ 19.188759] [<000000004c913a1a>] ? rtnetlink_rcv+0x1c/0x40 [ 19.194449] [<00000000b92b267a>] netlink_rcv_skb+0xd4/0x2e0 [ 19.200232] [<00000000205c5751>] ? rtnl_newlink+0x1540/0x1540 [ 19.206179] [<00000000a84e0e36>] rtnetlink_rcv+0x2b/0x40 [ 19.211695] [<00000000a07ff172>] netlink_unicast+0x4c6/0x6d0 [ 19.217565] [<00000000747c0262>] ? netlink_sendskb+0x60/0x60 [ 19.223435] [<00000000e641ca63>] netlink_sendmsg+0x6b6/0xc80 [ 19.229294] [<00000000cc24c255>] ? nlmsg_notify+0x170/0x170 [ 19.235070] [<00000000d96b4825>] ? selinux_socket_sendmsg+0x3f/0x50 [ 19.241552] [<00000000c04bb6c0>] ? security_socket_sendmsg+0x8f/0xc0 [ 19.248566] [<00000000cc24c255>] ? nlmsg_notify+0x170/0x170 [ 19.254349] [<000000008cc5a0af>] sock_sendmsg+0xbe/0x110 [ 19.259869] [<000000009b3775de>] sock_write_iter+0x235/0x3d0 [ 19.265783] [<00000000032ddc19>] ? sock_sendmsg+0x110/0x110 [ 19.271558] [<000000005a54813b>] ? bpf_fd_pass+0x270/0x270 [ 19.277252] [<00000000d9263f6f>] do_iter_readv_writev+0x3d9/0x4b0 [ 19.283550] [<000000001f6c999d>] ? vfs_iter_read+0x400/0x400 [ 19.289415] [<000000009990eed0>] ? selinux_file_permission+0x85/0x470 [ 19.296059] [<0000000009746ff8>] ? security_file_permission+0x8f/0x1f0 [ 19.303583] [<00000000171440e8>] ? rw_verify_area+0xea/0x2b0 [ 19.309449] [<00000000b21573ad>] do_readv_writev+0x2ed/0x7a0 [ 19.315312] [<00000000c2dd5d7a>] ? vfs_write+0x520/0x520 [ 19.320838] [<0000000028a7f64c>] ? __lru_cache_add+0x18c/0x250 [ 19.326882] [<000000005d9a0a02>] ? __this_cpu_preempt_check+0x1d/0x30 [ 19.333526] [<000000009565d5b2>] ? _raw_spin_unlock+0x2d/0x50 [ 19.339477] [<00000000589db602>] ? handle_mm_fault+0x546/0x2420 [ 19.345608] [<0000000060a04006>] ? vm_insert_page+0x850/0x850 [ 19.351556] [<000000002ee6ee3f>] ? debug_lockdep_rcu_enabled+0x71/0xa0 [ 19.358290] [<00000000db003448>] vfs_writev+0x89/0xc0 [ 19.363545] [<00000000bd8946c2>] do_writev+0x12e/0x310 [ 19.368888] [<0000000048eb279b>] ? vfs_writev+0xc0/0xc0 [ 19.374323] [<00000000554d3e29>] ? SyS_readv+0x30/0x30 [ 19.379671] [<0000000067a5552e>] SyS_writev+0x28/0x30 [ 19.384924] [<000000005c784ff3>] do_syscall_64+0x1ad/0x5c0 [ 19.390612] [<000000002888743d>] entry_SYSCALL_64_after_swapgs+0x5d/0xdb [ 19.398331] Kernel Offset: disabled [ 19.402085] Rebooting in 86400 seconds..