[....] Starting periodic command scheduler: cron[?25l[?1c7[ ok 8[?25h[?0c.
[....] Starting OpenBSD Secure Shell server: sshd[   16.952689] random: sshd: uninitialized urandom read (32 bytes read)
[?25l[?1c7[ ok 8[?25h[?0c.

Debian GNU/Linux 7 syzkaller ttyS0

syzkaller login: [   23.080793] random: sshd: uninitialized urandom read (32 bytes read)
[   23.497493] random: sshd: uninitialized urandom read (32 bytes read)
[   24.304451] random: sshd: uninitialized urandom read (32 bytes read)
[   24.435454] random: sshd: uninitialized urandom read (32 bytes read)
Warning: Permanently added '10.128.0.37' (ECDSA) to the list of known hosts.
[   29.838302] random: sshd: uninitialized urandom read (32 bytes read)
2018/05/18 23:32:08 parsed 1 programs
2018/05/18 23:32:08 executed programs: 0
[   30.333483] IPVS: Creating netns size=2536 id=1
[   30.368440] IPVS: Creating netns size=2536 id=2
[   30.409041] IPVS: Creating netns size=2536 id=3
[   30.445114] IPVS: Creating netns size=2536 id=4
[   30.489690] IPVS: Creating netns size=2536 id=5
[   30.527001] IPv6: ADDRCONF(NETDEV_UP): veth0_to_bridge: link is not ready
[   30.540251] IPv6: ADDRCONF(NETDEV_UP): veth0_to_bridge: link is not ready
[   30.548254] IPVS: Creating netns size=2536 id=6
[   30.559312] IPv6: ADDRCONF(NETDEV_UP): veth1_to_bridge: link is not ready
[   30.568374] IPv6: ADDRCONF(NETDEV_UP): veth1_to_bridge: link is not ready
[   30.614675] IPVS: Creating netns size=2536 id=7
[   30.670104] IPVS: Creating netns size=2536 id=8
[   30.727547] IPv6: ADDRCONF(NETDEV_UP): veth0_to_bond: link is not ready
[   30.749980] IPv6: ADDRCONF(NETDEV_UP): veth0_to_bond: link is not ready
[   30.762068] IPv6: ADDRCONF(NETDEV_UP): veth0_to_bridge: link is not ready
[   30.782938] IPv6: ADDRCONF(NETDEV_UP): veth1_to_bond: link is not ready
[   30.798852] IPv6: ADDRCONF(NETDEV_UP): veth1_to_bridge: link is not ready
[   30.818510] IPv6: ADDRCONF(NETDEV_UP): veth0_to_bridge: link is not ready
[   30.827234] IPv6: ADDRCONF(NETDEV_UP): veth1_to_bond: link is not ready
[   30.875740] IPv6: ADDRCONF(NETDEV_UP): veth1_to_bridge: link is not ready
[   30.960965] IPv6: ADDRCONF(NETDEV_UP): veth0_to_team: link is not ready
[   30.970142] IPv6: ADDRCONF(NETDEV_UP): veth0_to_bridge: link is not ready
[   30.981015] IPv6: ADDRCONF(NETDEV_UP): veth0_to_bond: link is not ready
[   30.990912] IPv6: ADDRCONF(NETDEV_UP): veth0_to_team: link is not ready
[   31.006892] IPv6: ADDRCONF(NETDEV_UP): veth1_to_team: link is not ready
[   31.021354] IPv6: ADDRCONF(NETDEV_UP): veth1_to_bond: link is not ready
[   31.037881] IPv6: ADDRCONF(NETDEV_UP): veth0_to_bond: link is not ready
[   31.052635] IPv6: ADDRCONF(NETDEV_UP): veth1_to_bridge: link is not ready
[   31.061360] IPv6: ADDRCONF(NETDEV_UP): veth1_to_team: link is not ready
[   31.076319] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bridge: link becomes ready
[   31.087924] IPv6: ADDRCONF(NETDEV_UP): veth1_to_bond: link is not ready
[   31.104716] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bridge: link becomes ready
[   31.132376] IPv6: ADDRCONF(NETDEV_UP): veth0_to_bridge: link is not ready
[   31.145691] IPv6: ADDRCONF(NETDEV_UP): veth0_to_bridge: link is not ready
[   31.159511] IPv6: ADDRCONF(NETDEV_UP): veth1_to_bridge: link is not ready
[   31.174558] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bridge: link becomes ready
[   31.184207] IPv6: ADDRCONF(NETDEV_UP): veth1_to_bridge: link is not ready
[   31.204721] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bridge: link becomes ready
[   31.213050] IPv6: ADDRCONF(NETDEV_UP): veth0_to_bridge: link is not ready
[   31.241681] IPv6: ADDRCONF(NETDEV_UP): veth0_to_team: link is not ready
[   31.257194] IPv6: ADDRCONF(NETDEV_UP): veth1_to_bridge: link is not ready
[   31.273316] IPv6: ADDRCONF(NETDEV_UP): veth1_to_team: link is not ready
[   31.301896] IPv6: ADDRCONF(NETDEV_UP): veth0_to_bond: link is not ready
[   31.316985] IPv6: ADDRCONF(NETDEV_UP): veth0_to_bond: link is not ready
[   31.325385] IPv6: ADDRCONF(NETDEV_UP): veth0_to_team: link is not ready
[   31.334244] IPv6: ADDRCONF(NETDEV_UP): veth1_to_bond: link is not ready
[   31.344818] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bridge: link becomes ready
[   31.360064] IPv6: ADDRCONF(NETDEV_UP): veth1_to_team: link is not ready
[   31.371145] IPv6: ADDRCONF(NETDEV_UP): veth0_to_bond: link is not ready
[   31.387461] IPv6: ADDRCONF(NETDEV_UP): veth1_to_bond: link is not ready
[   31.395884] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bridge: link becomes ready
[   31.411944] IPv6: ADDRCONF(NETDEV_UP): veth1_to_bond: link is not ready
[   31.427157] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bridge: link becomes ready
[   31.461108] IPv6: ADDRCONF(NETDEV_UP): bridge_slave_1: link is not ready
[   31.476380] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready
[   31.485418] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bridge: link becomes ready
[   31.500729] IPv6: ADDRCONF(NETDEV_UP): veth0_to_bond: link is not ready
[   31.545219] IPv6: ADDRCONF(NETDEV_UP): veth0_to_team: link is not ready
[   31.560680] IPv6: ADDRCONF(NETDEV_UP): veth1_to_bond: link is not ready
[   31.579522] IPv6: ADDRCONF(NETDEV_UP): veth1_to_team: link is not ready
[   31.596935] IPv6: ADDRCONF(NETDEV_UP): veth0_to_team: link is not ready
[   31.617821] IPv6: ADDRCONF(NETDEV_UP): bridge_slave_0: link is not ready
[   31.626235] IPv6: ADDRCONF(NETDEV_UP): veth0_to_team: link is not ready
[   31.636678] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready
[   31.647738] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bridge: link becomes ready
[   31.662489] IPv6: ADDRCONF(NETDEV_UP): bridge_slave_1: link is not ready
[   31.674691] IPv6: ADDRCONF(NETDEV_UP): veth1_to_team: link is not ready
[   31.683237] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready
[   31.694433] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bridge: link becomes ready
[   31.702864] IPv6: ADDRCONF(NETDEV_UP): veth1_to_team: link is not ready
[   31.722053] IPv6: ADDRCONF(NETDEV_UP): bridge_slave_0: link is not ready
[   31.732077] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready
[   31.743791] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bridge: link becomes ready
[   31.756061] IPv6: ADDRCONF(NETDEV_UP): veth0_to_team: link is not ready
[   31.764776] IPv6: ADDRCONF(NETDEV_UP): bridge_slave_0: link is not ready
[   31.776397] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready
[   31.790229] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bridge: link becomes ready
[   31.798905] IPv6: ADDRCONF(NETDEV_UP): bridge_slave_1: link is not ready
[   31.806998] IPv6: ADDRCONF(NETDEV_UP): veth1_to_team: link is not ready
[   31.821313] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready
[   31.831063] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bridge: link becomes ready
[   31.839330] IPv6: ADDRCONF(NETDEV_UP): bridge_slave_1: link is not ready
[   31.860608] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready
[   31.870310] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bridge: link becomes ready
[   31.881022] IPv6: ADDRCONF(NETDEV_UP): bridge_slave_0: link is not ready
[   31.895666] IPv6: ADDRCONF(NETDEV_UP): bridge_slave_1: link is not ready
[   31.906151] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready
[   31.915041] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bridge: link becomes ready
[   31.922664] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready
[   31.930262] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bridge: link becomes ready
[   33.021966] IPv6: ADDRCONF(NETDEV_UP): veth0: link is not ready
[   33.148825] IPv6: ADDRCONF(NETDEV_UP): veth1: link is not ready
[   33.160766] IPv6: ADDRCONF(NETDEV_CHANGE): veth1: link becomes ready
[   33.168836] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready
[   33.291914] IPv6: ADDRCONF(NETDEV_UP): veth0: link is not ready
[   33.312418] IPv6: ADDRCONF(NETDEV_UP): veth0: link is not ready
[   33.390825] IPv6: ADDRCONF(NETDEV_UP): veth1: link is not ready
[   33.399055] IPv6: ADDRCONF(NETDEV_CHANGE): veth1: link becomes ready
[   33.406154] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready
[   33.441732] IPv6: ADDRCONF(NETDEV_UP): veth0: link is not ready
[   33.465517] IPv6: ADDRCONF(NETDEV_UP): veth1: link is not ready
[   33.471717] IPv6: ADDRCONF(NETDEV_CHANGE): veth1: link becomes ready
[   33.482492] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready
[   33.547826] IPv6: ADDRCONF(NETDEV_UP): veth1: link is not ready
[   33.556521] IPv6: ADDRCONF(NETDEV_CHANGE): veth1: link becomes ready
[   33.563246] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready
[   33.635625] IPv6: ADDRCONF(NETDEV_UP): veth0: link is not ready
[   33.730833] IPv6: ADDRCONF(NETDEV_UP): veth0: link is not ready
[   33.747788] IPv6: ADDRCONF(NETDEV_UP): veth0: link is not ready
[   33.766219] IPv6: ADDRCONF(NETDEV_UP): veth1: link is not ready
[   33.775331] IPv6: ADDRCONF(NETDEV_CHANGE): veth1: link becomes ready
[   33.782033] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready
[   33.804081] IPv6: ADDRCONF(NETDEV_UP): veth0: link is not ready
[   33.867811] IPv6: ADDRCONF(NETDEV_UP): veth1: link is not ready
[   33.876539] IPv6: ADDRCONF(NETDEV_CHANGE): veth1: link becomes ready
[   33.883322] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready
[   33.917804] IPv6: ADDRCONF(NETDEV_UP): veth1: link is not ready
[   33.924404] IPv6: ADDRCONF(NETDEV_CHANGE): veth1: link becomes ready
[   33.931058] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready
[   33.941458] IPv6: ADDRCONF(NETDEV_UP): veth1: link is not ready
[   33.957161] IPv6: ADDRCONF(NETDEV_CHANGE): veth1: link becomes ready
[   33.967429] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready
2018/05/18 23:32:13 executed programs: 65
[   35.505170] ==================================================================
[   35.512715] BUG: KASAN: use-after-free in l2tp_session_queue_purge+0xf4/0x100
[   35.520093] Read of size 4 at addr ffff8801d49c6c80 by task syz-executor4/6071
[   35.527452] 
[   35.529094] CPU: 0 PID: 6071 Comm: syz-executor4 Not tainted 4.9.100-ge14d1a3 #30
[   35.536716] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
[   35.546062]  ffff8801d6c17878 ffffffff81eb0f09 ffffea0007527180 ffff8801d49c6c80
[   35.554100]  0000000000000000 ffff8801d49c6c80 ffffffff8300fbe0 ffff8801d6c178b0
[   35.562106]  ffffffff8156532b ffff8801d49c6c80 0000000000000004 0000000000000000
[   35.570107] Call Trace:
[   35.572677]  [<ffffffff81eb0f09>] dump_stack+0xc1/0x128
[   35.578022]  [<ffffffff8300fbe0>] ? sock_release+0x1c0/0x1c0
[   35.583799]  [<ffffffff8156532b>] print_address_description+0x6c/0x234
[   35.590634]  [<ffffffff8300fbe0>] ? sock_release+0x1c0/0x1c0
[   35.596424]  [<ffffffff81565735>] kasan_report.cold.6+0x242/0x2fe
[   35.602650]  [<ffffffff836b6534>] ? l2tp_session_queue_purge+0xf4/0x100
[   35.609386]  [<ffffffff81539394>] __asan_report_load4_noabort+0x14/0x20
[   35.616121]  [<ffffffff836b6534>] l2tp_session_queue_purge+0xf4/0x100
[   35.622681]  [<ffffffff8300fbe0>] ? sock_release+0x1c0/0x1c0
[   35.628462]  [<ffffffff836c21bb>] pppol2tp_release+0x1fb/0x2e0
[   35.634417]  [<ffffffff8300fab6>] sock_release+0x96/0x1c0
[   35.639964]  [<ffffffff8300fbf6>] sock_close+0x16/0x20
[   35.645283]  [<ffffffff81575a33>] __fput+0x263/0x700
[   35.650371]  [<ffffffff81575f55>] ____fput+0x15/0x20
[   35.655453]  [<ffffffff8119603c>] task_work_run+0x10c/0x180
[   35.661143]  [<ffffffff8113ec91>] do_exit+0x9e1/0x27c0
[   35.666399]  [<ffffffff81234380>] ? debug_check_no_locks_freed+0x210/0x210
[   35.673392]  [<ffffffff8113e2b0>] ? release_task.part.19+0x1210/0x1210
[   35.680050]  [<ffffffff8107ae56>] ? save_stack_trace+0x16/0x20
[   35.686017]  [<ffffffff81538343>] ? save_stack+0x43/0xd0
[   35.691457]  [<ffffffff81538d72>] ? kasan_slab_free+0x72/0xc0
[   35.697323]  [<ffffffff8115d042>] ? recalc_sigpending+0x72/0x90
[   35.703452]  [<ffffffff81144d91>] do_group_exit+0x111/0x340
[   35.709148]  [<ffffffff81167b8f>] get_signal+0x4cf/0x1450
[   35.714665]  [<ffffffff810524d7>] do_signal+0x87/0x19f0
[   35.720018]  [<ffffffff81234380>] ? debug_check_no_locks_freed+0x210/0x210
[   35.727015]  [<ffffffff815a637b>] ? putname+0xdb/0x110
[   35.732286]  [<ffffffff8127a273>] ? rcu_read_lock_sched_held+0x103/0x120
[   35.739119]  [<ffffffff81052450>] ? setup_sigcontext+0x7d0/0x7d0
[   35.745345]  [<ffffffff815a6380>] ? putname+0xe0/0x110
[   35.750608]  [<ffffffff812d7390>] ? do_futex+0x1770/0x1770
[   35.756220]  [<ffffffff8100554c>] ? exit_to_usermode_loop+0xac/0x120
[   35.762701]  [<ffffffff81005581>] exit_to_usermode_loop+0xe1/0x120
[   35.769014]  [<ffffffff810064d4>] do_syscall_64+0x364/0x490
[   35.774706]  [<ffffffff839f4613>] entry_SYSCALL_64_after_swapgs+0x5d/0xdb
[   35.781615] 
[   35.783219] Allocated by task 6071:
[   35.786825]  save_stack_trace+0x16/0x20
[   35.790790]  save_stack+0x43/0xd0
[   35.794220]  kasan_kmalloc+0xc7/0xe0
[   35.797918]  __kmalloc+0x11d/0x300
[   35.801451]  l2tp_session_create+0x38/0x16f0
[   35.805852]  pppol2tp_connect+0x10d7/0x18f0
[   35.810155]  SYSC_connect+0x1b8/0x300
[   35.813938]  SyS_connect+0x24/0x30
[   35.817453]  do_syscall_64+0x1a6/0x490
[   35.821319]  entry_SYSCALL_64_after_swapgs+0x5d/0xdb
[   35.826393] 
[   35.828005] Freed by task 6059:
[   35.831262]  save_stack_trace+0x16/0x20
[   35.835225]  save_stack+0x43/0xd0
[   35.838652]  kasan_slab_free+0x72/0xc0
[   35.842513]  kfree+0xfb/0x310
[   35.845595]  l2tp_session_free+0x166/0x200
[   35.849804]  l2tp_tunnel_closeall+0x284/0x350
[   35.854272]  l2tp_udp_encap_destroy+0x87/0xe0
[   35.858751]  udpv6_destroy_sock+0xb1/0xd0
[   35.862879]  sk_common_release+0x6d/0x300
[   35.867029]  udp_lib_close+0x15/0x20
[   35.870732]  inet_release+0xff/0x1d0
[   35.874425]  inet6_release+0x50/0x70
[   35.878117]  sock_release+0x96/0x1c0
[   35.881809]  sock_close+0x16/0x20
[   35.885242]  __fput+0x263/0x700
[   35.888597]  ____fput+0x15/0x20
[   35.891861]  task_work_run+0x10c/0x180
[   35.895724]  do_exit+0x9e1/0x27c0
[   35.899156]  do_group_exit+0x111/0x340
[   35.903038]  SyS_exit_group+0x1d/0x20
[   35.906817]  do_syscall_64+0x1a6/0x490
[   35.910684]  entry_SYSCALL_64_after_swapgs+0x5d/0xdb
[   35.915764] 
[   35.917370] The buggy address belongs to the object at ffff8801d49c6c80
[   35.917370]  which belongs to the cache kmalloc-512 of size 512
[   35.930009] The buggy address is located 0 bytes inside of
[   35.930009]  512-byte region [ffff8801d49c6c80, ffff8801d49c6e80)
[   35.941696] The buggy address belongs to the page:
[   35.946606] page:ffffea0007527180 count:1 mapcount:0 mapping:          (null) index:0x0 compound_mapcount: 0
[   35.956793] flags: 0x8000000000004080(slab|head)
[   35.961522] page dumped because: kasan: bad access detected
[   35.967219] 
[   35.968832] Memory state around the buggy address:
[   35.973736]  ffff8801d49c6b80: 00 00 00 00 00 00 00 00 00 00 fc fc fc fc fc fc
[   35.981074]  ffff8801d49c6c00: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
[   35.988419] >ffff8801d49c6c80: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
[   35.995757]                    ^
[   35.999108]  ffff8801d49c6d00: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
[   36.006445]  ffff8801d49c6d80: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
[   36.013778] ==================================================================
[   36.021112] Disabling lock debugging due to kernel taint
[   36.031966] Kernel panic - not syncing: panic_on_warn set ...
[   36.031966] 
[   36.039397] CPU: 0 PID: 6071 Comm: syz-executor4 Tainted: G    B           4.9.100-ge14d1a3 #30
[   36.048324] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
[   36.057684]  ffff8801d6c177d8 ffffffff81eb0f09 ffffffff843c50e5 00000000ffffffff
[   36.065839]  0000000000000000 0000000000000000 ffffffff8300fbe0 ffff8801d6c17898
[   36.073894]  ffffffff8141f895 0000000041b58ab3 ffffffff843b87e8 ffffffff8141f6d6
[   36.081901] Call Trace:
[   36.084467]  [<ffffffff81eb0f09>] dump_stack+0xc1/0x128
[   36.089812]  [<ffffffff8300fbe0>] ? sock_release+0x1c0/0x1c0
[   36.095588]  [<ffffffff8141f895>] panic+0x1bf/0x3bc
[   36.100582]  [<ffffffff8141f6d6>] ? add_taint.cold.6+0x16/0x16
[   36.106547]  [<ffffffff81003066>] ? ___preempt_schedule+0x16/0x18
[   36.112845]  [<ffffffff81565248>] kasan_end_report+0x47/0x4f
[   36.118622]  [<ffffffff81565569>] kasan_report.cold.6+0x76/0x2fe
[   36.124760]  [<ffffffff836b6534>] ? l2tp_session_queue_purge+0xf4/0x100
[   36.131504]  [<ffffffff81539394>] __asan_report_load4_noabort+0x14/0x20
[   36.138244]  [<ffffffff836b6534>] l2tp_session_queue_purge+0xf4/0x100
[   36.144807]  [<ffffffff8300fbe0>] ? sock_release+0x1c0/0x1c0
[   36.150584]  [<ffffffff836c21bb>] pppol2tp_release+0x1fb/0x2e0
[   36.156547]  [<ffffffff8300fab6>] sock_release+0x96/0x1c0
[   36.162075]  [<ffffffff8300fbf6>] sock_close+0x16/0x20
[   36.167351]  [<ffffffff81575a33>] __fput+0x263/0x700
[   36.172442]  [<ffffffff81575f55>] ____fput+0x15/0x20
[   36.177539]  [<ffffffff8119603c>] task_work_run+0x10c/0x180
[   36.183229]  [<ffffffff8113ec91>] do_exit+0x9e1/0x27c0
[   36.188484]  [<ffffffff81234380>] ? debug_check_no_locks_freed+0x210/0x210
[   36.195489]  [<ffffffff8113e2b0>] ? release_task.part.19+0x1210/0x1210
[   36.202135]  [<ffffffff8107ae56>] ? save_stack_trace+0x16/0x20
[   36.208084]  [<ffffffff81538343>] ? save_stack+0x43/0xd0
[   36.213515]  [<ffffffff81538d72>] ? kasan_slab_free+0x72/0xc0
[   36.219379]  [<ffffffff8115d042>] ? recalc_sigpending+0x72/0x90
[   36.225418]  [<ffffffff81144d91>] do_group_exit+0x111/0x340
[   36.231109]  [<ffffffff81167b8f>] get_signal+0x4cf/0x1450
[   36.236643]  [<ffffffff810524d7>] do_signal+0x87/0x19f0
[   36.241994]  [<ffffffff81234380>] ? debug_check_no_locks_freed+0x210/0x210
[   36.249004]  [<ffffffff815a637b>] ? putname+0xdb/0x110
[   36.254537]  [<ffffffff8127a273>] ? rcu_read_lock_sched_held+0x103/0x120
[   36.261354]  [<ffffffff81052450>] ? setup_sigcontext+0x7d0/0x7d0
[   36.267493]  [<ffffffff815a6380>] ? putname+0xe0/0x110
[   36.272758]  [<ffffffff812d7390>] ? do_futex+0x1770/0x1770
[   36.278366]  [<ffffffff8100554c>] ? exit_to_usermode_loop+0xac/0x120
[   36.284863]  [<ffffffff81005581>] exit_to_usermode_loop+0xe1/0x120
[   36.291165]  [<ffffffff810064d4>] do_syscall_64+0x364/0x490
[   36.296861]  [<ffffffff839f4613>] entry_SYSCALL_64_after_swapgs+0x5d/0xdb
[   36.304282] Dumping ftrace buffer:
[   36.307798]    (ftrace buffer empty)
[   36.311483] Kernel Offset: disabled
[   36.315084] Rebooting in 86400 seconds..