[....] Starting periodic command scheduler: cron[?25l[?1c7[1G[[32m ok [39;49m8[?25h[?0c. [....] Starting OpenBSD Secure Shell server: sshd[ 13.077503] random: sshd: uninitialized urandom read (32 bytes read) [?25l[?1c7[1G[[32m ok [39;49m8[?25h[?0c. Debian GNU/Linux 7 syzkaller ttyS0 syzkaller login: [ 17.885244] random: sshd: uninitialized urandom read (32 bytes read) [ 18.243862] random: sshd: uninitialized urandom read (32 bytes read) [ 19.137852] random: sshd: uninitialized urandom read (32 bytes read) [ 19.266133] random: sshd: uninitialized urandom read (32 bytes read) Warning: Permanently added '10.128.0.23' (ECDSA) to the list of known hosts. [ 24.942177] random: sshd: uninitialized urandom read (32 bytes read) 2018/06/27 22:16:54 parsed 1 programs [ 26.429474] random: cc1: uninitialized urandom read (8 bytes read) 2018/06/27 22:16:56 executed programs: 0 [ 27.315521] IPVS: Creating netns size=2536 id=1 [ 27.350539] IPVS: Creating netns size=2536 id=2 [ 27.390070] IPVS: Creating netns size=2536 id=3 [ 27.430556] IPVS: Creating netns size=2536 id=4 [ 27.481012] IPVS: Creating netns size=2536 id=5 [ 27.539574] IPVS: Creating netns size=2536 id=6 [ 27.591230] IPVS: Creating netns size=2536 id=7 [ 27.641625] IPv6: ADDRCONF(NETDEV_UP): veth0_to_bridge: link is not ready [ 27.642693] IPVS: Creating netns size=2536 id=8 [ 27.712825] IPv6: ADDRCONF(NETDEV_UP): veth1_to_bridge: link is not ready [ 27.829608] IPv6: ADDRCONF(NETDEV_UP): veth0_to_bridge: link is not ready [ 27.866310] IPv6: ADDRCONF(NETDEV_UP): veth1_to_bridge: link is not ready [ 27.921534] IPv6: ADDRCONF(NETDEV_UP): veth0_to_bond: link is not ready [ 27.960231] IPv6: ADDRCONF(NETDEV_UP): veth1_to_bond: link is not ready [ 27.993021] IPv6: ADDRCONF(NETDEV_UP): veth0_to_bridge: link is not ready [ 28.016124] IPv6: ADDRCONF(NETDEV_UP): veth0_to_bridge: link is not ready [ 28.033717] IPv6: ADDRCONF(NETDEV_UP): veth1_to_bridge: link is not ready [ 28.042023] IPv6: ADDRCONF(NETDEV_UP): veth1_to_bridge: link is not ready [ 28.088066] IPv6: ADDRCONF(NETDEV_UP): veth0_to_bond: link is not ready [ 28.135477] IPv6: ADDRCONF(NETDEV_UP): veth1_to_bond: link is not ready [ 28.162614] IPv6: ADDRCONF(NETDEV_UP): veth0_to_bridge: link is not ready [ 28.210104] IPv6: ADDRCONF(NETDEV_UP): veth1_to_bridge: link is not ready [ 28.217953] IPv6: ADDRCONF(NETDEV_UP): veth0_to_team: link is not ready [ 28.231103] IPv6: ADDRCONF(NETDEV_UP): veth0_to_bond: link is not ready [ 28.263642] IPv6: ADDRCONF(NETDEV_UP): veth0_to_bond: link is not ready [ 28.273807] IPv6: ADDRCONF(NETDEV_UP): veth1_to_bond: link is not ready [ 28.287232] IPv6: ADDRCONF(NETDEV_UP): veth1_to_team: link is not ready [ 28.319516] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bridge: link becomes ready [ 28.346283] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bridge: link becomes ready [ 28.370607] IPv6: ADDRCONF(NETDEV_UP): veth1_to_bond: link is not ready [ 28.399025] IPv6: ADDRCONF(NETDEV_UP): veth0_to_bridge: link is not ready [ 28.409949] IPv6: ADDRCONF(NETDEV_UP): veth0_to_bridge: link is not ready [ 28.429418] IPv6: ADDRCONF(NETDEV_UP): veth0_to_team: link is not ready [ 28.442115] IPv6: ADDRCONF(NETDEV_UP): veth1_to_bridge: link is not ready [ 28.449353] IPv6: ADDRCONF(NETDEV_UP): veth1_to_bridge: link is not ready [ 28.472860] IPv6: ADDRCONF(NETDEV_UP): veth0_to_bond: link is not ready [ 28.480282] IPv6: ADDRCONF(NETDEV_UP): veth1_to_team: link is not ready [ 28.512944] IPv6: ADDRCONF(NETDEV_UP): bridge_slave_0: link is not ready [ 28.519946] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 28.530005] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bridge: link becomes ready [ 28.554746] IPv6: ADDRCONF(NETDEV_UP): veth0_to_bridge: link is not ready [ 28.564573] IPv6: ADDRCONF(NETDEV_UP): bridge_slave_1: link is not ready [ 28.572091] IPv6: ADDRCONF(NETDEV_UP): veth1_to_bond: link is not ready [ 28.586230] IPv6: ADDRCONF(NETDEV_UP): veth0_to_team: link is not ready [ 28.594129] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 28.604257] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bridge: link becomes ready [ 28.615237] IPv6: ADDRCONF(NETDEV_UP): veth1_to_bridge: link is not ready [ 28.632635] IPv6: ADDRCONF(NETDEV_UP): veth0_to_team: link is not ready [ 28.640863] IPv6: ADDRCONF(NETDEV_UP): veth1_to_team: link is not ready [ 28.663903] IPv6: ADDRCONF(NETDEV_UP): veth1_to_team: link is not ready [ 28.694047] IPv6: ADDRCONF(NETDEV_UP): veth0_to_bond: link is not ready [ 28.704275] IPv6: ADDRCONF(NETDEV_UP): bridge_slave_0: link is not ready [ 28.716361] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 28.730831] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bridge: link becomes ready [ 28.742989] IPv6: ADDRCONF(NETDEV_UP): bridge_slave_1: link is not ready [ 28.752249] IPv6: ADDRCONF(NETDEV_UP): bridge_slave_0: link is not ready [ 28.761314] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 28.768840] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bridge: link becomes ready [ 28.778903] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 28.786901] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bridge: link becomes ready [ 28.795886] IPv6: ADDRCONF(NETDEV_UP): veth1_to_bond: link is not ready [ 28.804230] IPv6: ADDRCONF(NETDEV_UP): veth0_to_team: link is not ready [ 28.813189] IPv6: ADDRCONF(NETDEV_UP): veth0_to_bond: link is not ready [ 28.821720] IPv6: ADDRCONF(NETDEV_UP): veth0_to_bond: link is not ready [ 28.832722] IPv6: ADDRCONF(NETDEV_UP): bridge_slave_1: link is not ready [ 28.841734] IPv6: ADDRCONF(NETDEV_UP): veth1_to_bond: link is not ready [ 28.849808] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 28.860659] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bridge: link becomes ready [ 28.874741] IPv6: ADDRCONF(NETDEV_UP): veth1_to_team: link is not ready [ 28.888747] IPv6: ADDRCONF(NETDEV_UP): bridge_slave_0: link is not ready [ 28.903353] IPv6: ADDRCONF(NETDEV_UP): bridge_slave_1: link is not ready [ 28.915220] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 28.924699] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bridge: link becomes ready [ 28.932512] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 28.939947] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bridge: link becomes ready [ 28.954265] IPv6: ADDRCONF(NETDEV_UP): veth1_to_bond: link is not ready [ 29.020861] IPv6: ADDRCONF(NETDEV_UP): veth0_to_team: link is not ready [ 29.072656] IPv6: ADDRCONF(NETDEV_UP): veth1_to_team: link is not ready [ 29.097414] IPv6: ADDRCONF(NETDEV_UP): veth0_to_team: link is not ready [ 29.119108] IPv6: ADDRCONF(NETDEV_UP): bridge_slave_0: link is not ready [ 29.135231] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 29.149036] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bridge: link becomes ready [ 29.162337] IPv6: ADDRCONF(NETDEV_UP): veth1_to_team: link is not ready [ 29.171943] IPv6: ADDRCONF(NETDEV_UP): bridge_slave_1: link is not ready [ 29.181079] IPv6: ADDRCONF(NETDEV_UP): veth0_to_team: link is not ready [ 29.190539] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 29.198130] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bridge: link becomes ready [ 29.218849] IPv6: ADDRCONF(NETDEV_UP): veth1_to_team: link is not ready [ 29.229467] IPv6: ADDRCONF(NETDEV_UP): bridge_slave_0: link is not ready [ 29.242731] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 29.250956] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bridge: link becomes ready [ 29.260329] IPv6: ADDRCONF(NETDEV_UP): bridge_slave_0: link is not ready [ 29.273429] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 29.288674] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bridge: link becomes ready [ 29.306401] IPv6: ADDRCONF(NETDEV_UP): bridge_slave_1: link is not ready [ 29.317055] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 29.333765] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bridge: link becomes ready [ 29.351686] IPv6: ADDRCONF(NETDEV_UP): bridge_slave_1: link is not ready [ 29.359312] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 29.369418] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bridge: link becomes ready [ 30.065700] ip (5118) used greatest stack depth: 23976 bytes left [ 31.469982] IPv6: ADDRCONF(NETDEV_UP): veth0: link is not ready [ 31.614241] IPv6: ADDRCONF(NETDEV_UP): veth1: link is not ready [ 31.628678] IPv6: ADDRCONF(NETDEV_CHANGE): veth1: link becomes ready [ 31.637816] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 31.718972] IPv6: ADDRCONF(NETDEV_UP): veth0: link is not ready [ 31.751208] IPv6: ADDRCONF(NETDEV_UP): veth0: link is not ready [ 31.872600] IPv6: ADDRCONF(NETDEV_UP): veth1: link is not ready [ 31.878776] IPv6: ADDRCONF(NETDEV_CHANGE): veth1: link becomes ready [ 31.885646] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 31.901747] IPv6: ADDRCONF(NETDEV_UP): veth1: link is not ready [ 31.909184] IPv6: ADDRCONF(NETDEV_CHANGE): veth1: link becomes ready [ 31.916951] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 31.932718] IPv6: ADDRCONF(NETDEV_UP): veth0: link is not ready [ 31.939900] IPv6: ADDRCONF(NETDEV_UP): veth0: link is not ready [ 32.052797] IPv6: ADDRCONF(NETDEV_UP): veth1: link is not ready [ 32.058962] IPv6: ADDRCONF(NETDEV_CHANGE): veth1: link becomes ready [ 32.066556] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 32.118519] IPv6: ADDRCONF(NETDEV_UP): veth1: link is not ready [ 32.127649] IPv6: ADDRCONF(NETDEV_CHANGE): veth1: link becomes ready [ 32.136684] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 32.233605] IPv6: ADDRCONF(NETDEV_UP): veth0: link is not ready [ 32.273962] IPv6: ADDRCONF(NETDEV_UP): veth0: link is not ready [ 32.340136] IPv6: ADDRCONF(NETDEV_UP): veth0: link is not ready [ 32.368078] IPv6: ADDRCONF(NETDEV_UP): veth1: link is not ready [ 32.382644] IPv6: ADDRCONF(NETDEV_CHANGE): veth1: link becomes ready [ 32.389523] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 32.433021] IPv6: ADDRCONF(NETDEV_UP): veth1: link is not ready [ 32.444779] IPv6: ADDRCONF(NETDEV_CHANGE): veth1: link becomes ready [ 32.453105] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 32.521850] IPv6: ADDRCONF(NETDEV_UP): veth1: link is not ready [ 32.531907] IPv6: ADDRCONF(NETDEV_CHANGE): veth1: link becomes ready [ 32.538799] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready 2018/06/27 22:17:01 executed programs: 8 [ 33.354682] l2tp_core: tunl 4: sockfd_lookup(fd=9) returned -88 [ 33.377737] l2tp_core: tunl 4: sockfd_lookup(fd=9) returned -88 [ 33.470684] l2tp_core: tunl 4: sockfd_lookup(fd=9) returned -88 [ 33.790124] l2tp_core: tunl 4: sockfd_lookup(fd=8) returned -88 [ 33.950839] ================================================================== [ 33.958269] BUG: KASAN: use-after-free in l2tp_session_queue_purge+0xf4/0x100 [ 33.965546] Read of size 4 at addr ffff8801bf2d0280 by task syz-executor4/7015 [ 33.972900] [ 33.974510] CPU: 1 PID: 7015 Comm: syz-executor4 Not tainted 4.9.110-g00a0bcb #7 [ 33.982017] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 33.991358] ffff8801c1557a28 ffffffff81eb2329 ffffea0006fcb400 ffff8801bf2d0280 [ 33.999405] 0000000000000000 ffff8801bf2d0280 ffffffff83011be0 ffff8801c1557a60 [ 34.007439] ffffffff81567a89 ffff8801bf2d0280 0000000000000004 0000000000000000 [ 34.015485] Call Trace: [ 34.018049] [<ffffffff81eb2329>] dump_stack+0xc1/0x128 [ 34.023395] [<ffffffff83011be0>] ? sock_release+0x1c0/0x1c0 [ 34.029180] [<ffffffff81567a89>] print_address_description+0x6c/0x234 [ 34.037226] [<ffffffff83011be0>] ? sock_release+0x1c0/0x1c0 [ 34.043015] [<ffffffff81567e93>] kasan_report.cold.6+0x242/0x2fe [ 34.049247] [<ffffffff836b9994>] ? l2tp_session_queue_purge+0xf4/0x100 [ 34.055982] [<ffffffff8153bac4>] __asan_report_load4_noabort+0x14/0x20 [ 34.062725] [<ffffffff836b9994>] l2tp_session_queue_purge+0xf4/0x100 [ 34.069294] [<ffffffff83011be0>] ? sock_release+0x1c0/0x1c0 [ 34.075070] [<ffffffff836c561b>] pppol2tp_release+0x1fb/0x2e0 [ 34.081036] [<ffffffff83011ab6>] sock_release+0x96/0x1c0 [ 34.086587] [<ffffffff83011bf6>] sock_close+0x16/0x20 [ 34.091943] [<ffffffff81578193>] __fput+0x263/0x700 [ 34.097038] [<ffffffff815786b5>] ____fput+0x15/0x20 [ 34.102129] [<ffffffff8119832c>] task_work_run+0x10c/0x180 [ 34.107838] [<ffffffff8116aa03>] get_signal+0x1133/0x1450 [ 34.113442] [<ffffffff81052637>] do_signal+0x87/0x19f0 [ 34.118788] [<ffffffff81577ec2>] ? fput+0xd2/0x140 [ 34.123790] [<ffffffff830159ca>] ? SYSC_connect+0x22a/0x300 [ 34.129569] [<ffffffff830157a0>] ? SYSC_bind+0x280/0x280 [ 34.135084] [<ffffffff815d7460>] ? get_unused_fd_flags+0xd0/0xd0 [ 34.141297] [<ffffffff810525b0>] ? setup_sigcontext+0x7d0/0x7d0 [ 34.147419] [<ffffffff81f19d8b>] ? check_preemption_disabled+0x3b/0x170 [ 34.154245] [<ffffffff811bc0bd>] ? kick_process+0xed/0x170 [ 34.159947] [<ffffffff8119808a>] ? task_work_add+0x8a/0xe0 [ 34.165640] [<ffffffff81577ec2>] ? fput+0xd2/0x140 [ 34.170638] [<ffffffff8100554c>] ? exit_to_usermode_loop+0xac/0x120 [ 34.177106] [<ffffffff81005581>] exit_to_usermode_loop+0xe1/0x120 [ 34.183400] [<ffffffff81007073>] do_fast_syscall_32+0x5c3/0x870 [ 34.189533] [<ffffffff81003036>] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 34.196179] [<ffffffff839f93d0>] entry_SYSENTER_compat+0x90/0xa2 [ 34.202383] [ 34.203991] Allocated by task 7015: [ 34.207601] save_stack_trace+0x16/0x20 [ 34.211548] save_stack+0x43/0xd0 [ 34.214985] kasan_kmalloc+0xc7/0xe0 [ 34.218682] __kmalloc+0x11d/0x300 [ 34.222200] l2tp_session_create+0x38/0x16f0 [ 34.226583] pppol2tp_connect+0x10d7/0x18f0 [ 34.230881] SYSC_connect+0x1b8/0x300 [ 34.234655] SyS_connect+0x24/0x30 [ 34.238170] do_fast_syscall_32+0x2f7/0x870 [ 34.242481] entry_SYSENTER_compat+0x90/0xa2 [ 34.246862] [ 34.248464] Freed by task 7042: [ 34.251721] save_stack_trace+0x16/0x20 [ 34.255668] save_stack+0x43/0xd0 [ 34.259108] kasan_slab_free+0x72/0xc0 [ 34.262969] kfree+0xfb/0x310 [ 34.266061] l2tp_session_free+0x166/0x200 [ 34.270300] l2tp_tunnel_closeall+0x284/0x350 [ 34.274773] l2tp_udp_encap_destroy+0x87/0xe0 [ 34.279243] udpv6_destroy_sock+0xb1/0xd0 [ 34.283369] sk_common_release+0x6d/0x300 [ 34.287498] udp_lib_close+0x15/0x20 [ 34.291195] inet_release+0xff/0x1d0 [ 34.294888] inet6_release+0x50/0x70 [ 34.298582] sock_release+0x96/0x1c0 [ 34.302279] sock_close+0x16/0x20 [ 34.305718] __fput+0x263/0x700 [ 34.308986] ____fput+0x15/0x20 [ 34.312252] task_work_run+0x10c/0x180 [ 34.316115] exit_to_usermode_loop+0xfc/0x120 [ 34.320591] do_fast_syscall_32+0x5c3/0x870 [ 34.324905] entry_SYSENTER_compat+0x90/0xa2 [ 34.329283] [ 34.330895] The buggy address belongs to the object at ffff8801bf2d0280 [ 34.330895] which belongs to the cache kmalloc-512 of size 512 [ 34.343527] The buggy address is located 0 bytes inside of [ 34.343527] 512-byte region [ffff8801bf2d0280, ffff8801bf2d0480) [ 34.355205] The buggy address belongs to the page: [ 34.360118] page:ffffea0006fcb400 count:1 mapcount:0 mapping: (null) index:0x0 compound_mapcount: 0 [ 34.370309] flags: 0x8000000000004080(slab|head) [ 34.375048] page dumped because: kasan: bad access detected [ 34.380732] [ 34.382341] Memory state around the buggy address: [ 34.387248] ffff8801bf2d0180: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 34.394591] ffff8801bf2d0200: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 34.401930] >ffff8801bf2d0280: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 34.409263] ^ [ 34.412603] ffff8801bf2d0300: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 34.419946] ffff8801bf2d0380: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 34.427276] ================================================================== [ 34.434697] Disabling lock debugging due to kernel taint [ 34.441866] Kernel panic - not syncing: panic_on_warn set ... [ 34.441866] [ 34.447031] l2tp_core: tunl 4: sockfd_lookup(fd=8) returned -88 [ 34.455294] CPU: 1 PID: 7015 Comm: syz-executor4 Tainted: G B 4.9.110-g00a0bcb #7 [ 34.464398] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 34.473760] ffff8801c1557988 ffffffff81eb2329 ffffffff843c7167 00000000ffffffff [ 34.481795] 0000000000000000 0000000000000001 ffffffff83011be0 ffff8801c1557a48 [ 34.489824] ffffffff81421925 0000000041b58ab3 ffffffff843ba880 ffffffff81421766 [ 34.497850] Call Trace: [ 34.500428] [<ffffffff81eb2329>] dump_stack+0xc1/0x128 [ 34.505791] [<ffffffff83011be0>] ? sock_release+0x1c0/0x1c0 [ 34.511670] [<ffffffff81421925>] panic+0x1bf/0x3bc [ 34.516674] [<ffffffff81421766>] ? add_taint.cold.6+0x16/0x16 [ 34.522622] [<ffffffff81003066>] ? ___preempt_schedule+0x16/0x18 [ 34.528922] [<ffffffff815679a6>] kasan_end_report+0x47/0x4f [ 34.534697] [<ffffffff81567cc7>] kasan_report.cold.6+0x76/0x2fe [ 34.540818] [<ffffffff836b9994>] ? l2tp_session_queue_purge+0xf4/0x100 [ 34.547546] [<ffffffff8153bac4>] __asan_report_load4_noabort+0x14/0x20 [ 34.554276] [<ffffffff836b9994>] l2tp_session_queue_purge+0xf4/0x100 [ 34.560842] [<ffffffff83011be0>] ? sock_release+0x1c0/0x1c0 [ 34.566631] [<ffffffff836c561b>] pppol2tp_release+0x1fb/0x2e0 [ 34.572580] [<ffffffff83011ab6>] sock_release+0x96/0x1c0 [ 34.578116] [<ffffffff83011bf6>] sock_close+0x16/0x20 [ 34.583387] [<ffffffff81578193>] __fput+0x263/0x700 [ 34.588479] [<ffffffff815786b5>] ____fput+0x15/0x20 [ 34.593569] [<ffffffff8119832c>] task_work_run+0x10c/0x180 [ 34.599265] [<ffffffff8116aa03>] get_signal+0x1133/0x1450 [ 34.604913] [<ffffffff81052637>] do_signal+0x87/0x19f0 [ 34.610256] [<ffffffff81577ec2>] ? fput+0xd2/0x140 [ 34.615444] [<ffffffff830159ca>] ? SYSC_connect+0x22a/0x300 [ 34.621222] [<ffffffff830157a0>] ? SYSC_bind+0x280/0x280 [ 34.626761] [<ffffffff815d7460>] ? get_unused_fd_flags+0xd0/0xd0 [ 34.632993] [<ffffffff810525b0>] ? setup_sigcontext+0x7d0/0x7d0 [ 34.639123] [<ffffffff81f19d8b>] ? check_preemption_disabled+0x3b/0x170 [ 34.645953] [<ffffffff811bc0bd>] ? kick_process+0xed/0x170 [ 34.651645] [<ffffffff8119808a>] ? task_work_add+0x8a/0xe0 [ 34.657339] [<ffffffff81577ec2>] ? fput+0xd2/0x140 [ 34.662335] [<ffffffff8100554c>] ? exit_to_usermode_loop+0xac/0x120 [ 34.668821] [<ffffffff81005581>] exit_to_usermode_loop+0xe1/0x120 [ 34.675117] [<ffffffff81007073>] do_fast_syscall_32+0x5c3/0x870 [ 34.681250] [<ffffffff81003036>] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 34.687904] [<ffffffff839f93d0>] entry_SYSENTER_compat+0x90/0xa2 [ 34.694857] Dumping ftrace buffer: [ 34.698387] (ftrace buffer empty) [ 34.702074] Kernel Offset: disabled [ 34.705686] Rebooting in 86400 seconds..