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 '10.128.10.11' (ECDSA) to the list of known hosts. net.ipv6.conf.syz_tun.accept_dad = 0 net.ipv6.conf.syz_tun.router_solicitations = 0 syzkaller login: [ 29.955735] IPVS: ftp: loaded support on port[0] = 21 RTNETLINK answers: File exists RTNETLINK answers: Operation not supported RTNETLINK answers: No buffer space available RTNETLINK answers: Operation not supported [ 30.231578] IPv6: ADDRCONF(NETDEV_UP): bridge0: link is not ready RTNETLINK answers: Operation not supported RTNETLINK answers: Operation not supported RTNETLINK answers: Operation not supported RTNETLINK answers: Invalid argument RTNETLINK answers: Invalid argument RTNETLINK answers: Invalid argument [ 30.591455] IPv6: ADDRCONF(NETDEV_UP): bond0: link is not ready [ 30.597551] 8021q: adding VLAN 0 to HW filter on device bond0 [ 30.636147] IPv6: ADDRCONF(NETDEV_UP): veth0: link is not ready [ 30.675931] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready executing program [ 30.715941] IPv6: ADDRCONF(NETDEV_UP): team0: link is not ready [ 30.722049] 8021q: adding VLAN 0 to HW filter on device team0 [ 30.760104] ================================================================== [ 30.767532] BUG: KASAN: use-after-free in skb_release_data+0x19b/0x860 [ 30.774175] Write of size 4 at addr ffff8801d9027d60 by task syzkaller582355/4464 [ 30.781767] [ 30.783376] CPU: 0 PID: 4464 Comm: syzkaller582355 Not tainted 4.16.0+ #17 [ 30.790364] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 30.799690] Call Trace: [ 30.802259] dump_stack+0x1b9/0x294 [ 30.805867] ? dump_stack_print_info.cold.2+0x52/0x52 [ 30.811038] ? printk+0x9e/0xba [ 30.814300] ? kmsg_dump_rewind_nolock+0xe4/0xe4 [ 30.819038] ? kasan_check_write+0x14/0x20 [ 30.823253] print_address_description+0x6c/0x20b [ 30.828076] ? skb_release_data+0x19b/0x860 [ 30.832375] kasan_report.cold.7+0xac/0x2f5 [ 30.836677] check_memory_region+0x13e/0x1b0 [ 30.841062] kasan_check_write+0x14/0x20 [ 30.845097] skb_release_data+0x19b/0x860 [ 30.849224] ? skb_tx_error+0x2f0/0x2f0 [ 30.853177] ? kasan_check_read+0x11/0x20 [ 30.857303] ? rcu_is_watching+0x85/0x140 [ 30.861431] ? kasan_check_write+0x14/0x20 [ 30.865646] ? sock_rmem_free+0x6f/0x90 [ 30.869597] ? __sanitizer_cov_trace_const_cmp8+0x18/0x20 [ 30.875131] skb_release_all+0x4a/0x60 [ 30.878997] kfree_skb+0x195/0x560 [ 30.882521] ? skb_queue_purge+0x19/0x40 [ 30.886560] ? __kfree_skb+0x20/0x20 [ 30.890255] ? do_raw_spin_trylock+0x1b0/0x1b0 [ 30.894815] ? _raw_spin_unlock_irqrestore+0x74/0xc0 [ 30.899896] ? trace_hardirqs_on_caller+0x421/0x5c0 [ 30.904890] ? trace_hardirqs_on+0xd/0x10 [ 30.909024] ? skb_dequeue+0x12f/0x180 [ 30.912894] skb_queue_purge+0x19/0x40 [ 30.916760] packet_sock_destruct+0x93/0x290 [ 30.921146] ? packet_mm_close+0xc0/0xc0 [ 30.925183] ? graph_lock+0x170/0x170 [ 30.928962] ? __free_object+0x16e/0x330 [ 30.932999] ? __list_del_entry_valid.cold.1+0x58/0x58 [ 30.938260] ? do_raw_spin_trylock+0x1b0/0x1b0 [ 30.942819] ? packet_mm_close+0xc0/0xc0 [ 30.946856] __sk_destruct+0xff/0xa40 [ 30.950634] ? sock_warn_obsolete_bsdism+0xb0/0xb0 [ 30.955543] ? graph_lock+0x170/0x170 [ 30.959321] ? lock_downgrade+0x8e0/0x8e0 [ 30.963445] ? __lock_is_held+0xb5/0x140 [ 30.967484] ? kasan_check_read+0x11/0x20 [ 30.971616] ? do_raw_spin_unlock+0x9e/0x2e0 [ 30.976004] ? do_raw_spin_trylock+0x1b0/0x1b0 [ 30.980575] ? _raw_spin_unlock_irqrestore+0x74/0xc0 [ 30.985656] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 30.991172] ? refcount_sub_and_test+0x212/0x330 [ 30.995908] ? refcount_inc_not_zero+0x2d0/0x2d0 [ 31.000643] ? refcount_inc_not_zero+0x2d0/0x2d0 [ 31.005382] ? pcpu_free_area+0xa90/0xa90 [ 31.009508] sk_destruct+0x78/0x90 [ 31.013033] __sk_free+0x22e/0x340 [ 31.016558] sk_free+0x42/0x50 [ 31.019736] packet_release+0xa18/0xd50 [ 31.023686] ? lock_downgrade+0x8e0/0x8e0 [ 31.027813] ? packet_lookup_frame+0x270/0x270 [ 31.032380] ? cpumask_weight.constprop.5+0x44/0x44 [ 31.037378] ? do_raw_spin_lock+0xc1/0x200 [ 31.041777] ? __sanitizer_cov_trace_const_cmp8+0x18/0x20 [ 31.047292] ? locks_remove_file+0x3f7/0x5a0 [ 31.051678] ? fcntl_setlk+0x1020/0x1020 [ 31.055716] ? fsnotify+0x415/0x1100 [ 31.059414] ? fsnotify_first_mark+0x330/0x330 [ 31.063976] sock_release+0x96/0x1b0 [ 31.067671] ? sock_alloc_file+0x4e0/0x4e0 [ 31.071884] sock_close+0x16/0x20 [ 31.075316] __fput+0x34d/0x890 [ 31.078574] ? fput+0x1a0/0x1a0 [ 31.081832] ? check_same_owner+0x320/0x320 [ 31.086135] ____fput+0x15/0x20 [ 31.089391] task_work_run+0x1e4/0x290 [ 31.093255] ? task_work_cancel+0x240/0x240 [ 31.097556] ? switch_task_namespaces+0xbd/0xd0 [ 31.102203] do_exit+0x1aee/0x2730 [ 31.105724] ? do_raw_spin_unlock+0x31/0x2e0 [ 31.110108] ? mm_update_next_owner+0x980/0x980 [ 31.114756] ? kasan_check_write+0x14/0x20 [ 31.118967] ? do_raw_spin_lock+0xc1/0x200 [ 31.123182] ? trace_hardirqs_off+0xd/0x10 [ 31.127396] ? _raw_spin_unlock_irqrestore+0x63/0xc0 [ 31.132480] ? debug_check_no_obj_freed+0x2ff/0x584 [ 31.137475] ? trace_hardirqs_off+0xd/0x10 [ 31.141689] ? quarantine_put+0xeb/0x190 [ 31.145729] ? kfree+0x111/0x260 [ 31.149074] ? ___sys_sendmsg+0x31a/0x940 [ 31.153199] ? trace_hardirqs_on_caller+0x421/0x5c0 [ 31.158191] ? trace_hardirqs_on+0xd/0x10 [ 31.162320] ? ___sys_sendmsg+0x31f/0x940 [ 31.166446] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 31.171964] ? copy_msghdr_from_user+0x560/0x560 [ 31.176697] ? vm_insert_mixed_mkwrite+0x40/0x40 [ 31.181428] ? graph_lock+0x170/0x170 [ 31.185205] ? graph_lock+0x170/0x170 [ 31.188981] ? find_held_lock+0x36/0x1c0 [ 31.193031] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 31.198545] ? __fget_light+0x2ef/0x430 [ 31.202497] ? fget_raw+0x20/0x20 [ 31.205928] ? find_held_lock+0x36/0x1c0 [ 31.209977] ? lock_downgrade+0x8e0/0x8e0 [ 31.214101] ? handle_mm_fault+0x8c0/0xc70 [ 31.218317] ? __sanitizer_cov_trace_const_cmp8+0x18/0x20 [ 31.223838] ? sockfd_lookup_light+0xc5/0x160 [ 31.228311] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 31.233823] ? __sys_sendmsg+0x1aa/0x270 [ 31.237858] ? SyS_shutdown+0x30/0x30 [ 31.241640] ? __do_page_fault+0x441/0xe40 [ 31.245852] do_group_exit+0x16f/0x430 [ 31.249720] ? SyS_exit+0x30/0x30 [ 31.253154] ? syscall_slow_exit_work+0x4f0/0x4f0 [ 31.257973] ? do_syscall_64+0xb7/0x9d0 [ 31.261925] ? do_group_exit+0x430/0x430 [ 31.265962] SyS_exit_group+0x1d/0x20 [ 31.269746] do_syscall_64+0x29e/0x9d0 [ 31.273611] ? vmalloc_sync_all+0x30/0x30 [ 31.277739] ? trace_hardirqs_on_thunk+0x1a/0x1c [ 31.282474] ? syscall_return_slowpath+0x5c0/0x5c0 [ 31.287384] ? syscall_return_slowpath+0x30f/0x5c0 [ 31.292293] ? entry_SYSCALL_64_after_hwframe+0x52/0xb7 [ 31.297639] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 31.302461] entry_SYSCALL_64_after_hwframe+0x42/0xb7 [ 31.307627] RIP: 0033:0x4418d9 [ 31.310792] RSP: 002b:00007ffe7dc2b3f8 EFLAGS: 00000206 ORIG_RAX: 00000000000000e7 [ 31.318478] RAX: ffffffffffffffda RBX: 000000000000001b RCX: 00000000004418d9 [ 31.325724] RDX: 00000000004418d9 RSI: 0000000000000000 RDI: 0000000000000001 [ 31.332969] RBP: 00000000004a34d8 R08: 00000000012c26b0 R09: 00000000006cd018 [ 31.340213] R10: 00000000012c26b0 R11: 0000000000000206 R12: 00007ffe7dc2b508 [ 31.347457] R13: 0000000000402660 R14: 0000000000000000 R15: 0000000000000000 [ 31.354708] [ 31.356312] Allocated by task 4464: [ 31.359918] save_stack+0x43/0xd0 [ 31.363352] kasan_kmalloc+0xc4/0xe0 [ 31.367043] __kmalloc_node_track_caller+0x47/0x70 [ 31.371950] __kmalloc_reserve.isra.38+0x3a/0xe0 [ 31.376683] __alloc_skb+0x14d/0x780 [ 31.380371] alloc_skb_with_frags+0x137/0x760 [ 31.384844] sock_alloc_send_pskb+0x87a/0xae0 [ 31.389314] packet_sendmsg+0x1bd1/0x6100 [ 31.393439] sock_sendmsg+0xd5/0x120 [ 31.397129] ___sys_sendmsg+0x805/0x940 [ 31.401077] __sys_sendmsg+0x115/0x270 [ 31.404938] SyS_sendmsg+0x29/0x30 [ 31.408455] do_syscall_64+0x29e/0x9d0 [ 31.412319] entry_SYSCALL_64_after_hwframe+0x42/0xb7 [ 31.417478] [ 31.419079] Freed by task 4464: [ 31.422334] save_stack+0x43/0xd0 [ 31.425764] __kasan_slab_free+0x11a/0x170 [ 31.429975] kasan_slab_free+0xe/0x10 [ 31.433752] kfree+0xd9/0x260 [ 31.436833] skb_free_head+0x99/0xc0 [ 31.440520] skb_release_data+0x690/0x860 [ 31.444642] skb_release_all+0x4a/0x60 [ 31.448507] kfree_skb+0x195/0x560 [ 31.452031] ip6_tnl_start_xmit+0xa44/0x2290 [ 31.456419] dev_hard_start_xmit+0x264/0xc10 [ 31.460801] __dev_queue_xmit+0x2724/0x34c0 [ 31.465097] dev_queue_xmit+0x17/0x20 [ 31.468873] packet_sendmsg+0x411d/0x6100 [ 31.472998] sock_sendmsg+0xd5/0x120 [ 31.476695] ___sys_sendmsg+0x805/0x940 [ 31.480643] __sys_sendmsg+0x115/0x270 [ 31.484505] SyS_sendmsg+0x29/0x30 [ 31.488029] do_syscall_64+0x29e/0x9d0 [ 31.491894] entry_SYSCALL_64_after_hwframe+0x42/0xb7 [ 31.497055] [ 31.498663] The buggy address belongs to the object at ffff8801d9027c80 [ 31.498663] which belongs to the cache kmalloc-512 of size 512 [ 31.511294] The buggy address is located 224 bytes inside of [ 31.511294] 512-byte region [ffff8801d9027c80, ffff8801d9027e80) [ 31.523141] The buggy address belongs to the page: [ 31.528049] page:ffffea00076409c0 count:1 mapcount:0 mapping:ffff8801d9027000 index:0x0 [ 31.536169] flags: 0x2fffc0000000100(slab) [ 31.540385] raw: 02fffc0000000100 ffff8801d9027000 0000000000000000 0000000100000006 [ 31.548243] raw: ffffea0007655ae0 ffffea0007648560 ffff8801dac00940 0000000000000000 [ 31.556102] page dumped because: kasan: bad access detected [ 31.561784] [ 31.563385] Memory state around the buggy address: [ 31.568287] ffff8801d9027c00: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 31.575622] ffff8801d9027c80: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 31.582956] >ffff8801d9027d00: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 31.590286] ^ [ 31.596752] ffff8801d9027d80: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 31.604086] ffff8801d9027e00: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 31.611416] ================================================================== [ 31.618748] Disabling lock debugging due to kernel taint [ 31.624650] Kernel panic - not syncing: panic_on_warn set ... [ 31.624650] [ 31.632016] CPU: 0 PID: 4464 Comm: syzkaller582355 Tainted: G B 4.16.0+ #17 [ 31.640324] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 31.649655] Call Trace: [ 31.652221] dump_stack+0x1b9/0x294 [ 31.655825] ? dump_stack_print_info.cold.2+0x52/0x52 [ 31.660991] ? trace_hardirqs_on_thunk+0x1a/0x1c [ 31.665724] ? skb_release_data+0xd0/0x860 [ 31.669934] panic+0x22f/0x4de [ 31.673101] ? add_taint.cold.5+0x16/0x16 [ 31.677225] ? do_raw_spin_unlock+0x9e/0x2e0 [ 31.681608] ? do_raw_spin_unlock+0x9e/0x2e0 [ 31.685989] ? skb_release_data+0x19b/0x860 [ 31.690289] kasan_end_report+0x47/0x4f [ 31.694242] kasan_report.cold.7+0xc9/0x2f5 [ 31.698548] check_memory_region+0x13e/0x1b0 [ 31.702931] kasan_check_write+0x14/0x20 [ 31.706965] skb_release_data+0x19b/0x860 [ 31.711091] ? skb_tx_error+0x2f0/0x2f0 [ 31.715041] ? kasan_check_read+0x11/0x20 [ 31.719165] ? rcu_is_watching+0x85/0x140 [ 31.723289] ? kasan_check_write+0x14/0x20 [ 31.727499] ? sock_rmem_free+0x6f/0x90 [ 31.731450] ? __sanitizer_cov_trace_const_cmp8+0x18/0x20 [ 31.736961] skb_release_all+0x4a/0x60 [ 31.740822] kfree_skb+0x195/0x560 [ 31.744340] ? skb_queue_purge+0x19/0x40 [ 31.748375] ? __kfree_skb+0x20/0x20 [ 31.752063] ? do_raw_spin_trylock+0x1b0/0x1b0 [ 31.756620] ? _raw_spin_unlock_irqrestore+0x74/0xc0 [ 31.761703] ? trace_hardirqs_on_caller+0x421/0x5c0 [ 31.766693] ? trace_hardirqs_on+0xd/0x10 [ 31.770818] ? skb_dequeue+0x12f/0x180 [ 31.774683] skb_queue_purge+0x19/0x40 [ 31.778545] packet_sock_destruct+0x93/0x290 [ 31.782927] ? packet_mm_close+0xc0/0xc0 [ 31.786960] ? graph_lock+0x170/0x170 [ 31.790736] ? __free_object+0x16e/0x330 [ 31.794771] ? __list_del_entry_valid.cold.1+0x58/0x58 [ 31.800028] ? do_raw_spin_trylock+0x1b0/0x1b0 [ 31.804585] ? packet_mm_close+0xc0/0xc0 [ 31.808619] __sk_destruct+0xff/0xa40 [ 31.812394] ? sock_warn_obsolete_bsdism+0xb0/0xb0 [ 31.817302] ? graph_lock+0x170/0x170 [ 31.821079] ? lock_downgrade+0x8e0/0x8e0 [ 31.825203] ? __lock_is_held+0xb5/0x140 [ 31.829241] ? kasan_check_read+0x11/0x20 [ 31.833365] ? do_raw_spin_unlock+0x9e/0x2e0 [ 31.837748] ? do_raw_spin_trylock+0x1b0/0x1b0 [ 31.842304] ? _raw_spin_unlock_irqrestore+0x74/0xc0 [ 31.847390] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 31.852902] ? refcount_sub_and_test+0x212/0x330 [ 31.857634] ? refcount_inc_not_zero+0x2d0/0x2d0 [ 31.862363] ? refcount_inc_not_zero+0x2d0/0x2d0 [ 31.867095] ? pcpu_free_area+0xa90/0xa90 [ 31.871219] sk_destruct+0x78/0x90 [ 31.874733] __sk_free+0x22e/0x340 [ 31.878247] sk_free+0x42/0x50 [ 31.881425] packet_release+0xa18/0xd50 [ 31.885373] ? lock_downgrade+0x8e0/0x8e0 [ 31.889497] ? packet_lookup_frame+0x270/0x270 [ 31.894055] ? cpumask_weight.constprop.5+0x44/0x44 [ 31.899048] ? do_raw_spin_lock+0xc1/0x200 [ 31.903264] ? __sanitizer_cov_trace_const_cmp8+0x18/0x20 [ 31.908777] ? locks_remove_file+0x3f7/0x5a0 [ 31.913162] ? fcntl_setlk+0x1020/0x1020 [ 31.917200] ? fsnotify+0x415/0x1100 [ 31.920894] ? fsnotify_first_mark+0x330/0x330 [ 31.925454] sock_release+0x96/0x1b0 [ 31.929145] ? sock_alloc_file+0x4e0/0x4e0 [ 31.933355] sock_close+0x16/0x20 [ 31.936781] __fput+0x34d/0x890 [ 31.940036] ? fput+0x1a0/0x1a0 [ 31.943293] ? check_same_owner+0x320/0x320 [ 31.947590] ____fput+0x15/0x20 [ 31.950845] task_work_run+0x1e4/0x290 [ 31.954707] ? task_work_cancel+0x240/0x240 [ 31.959004] ? switch_task_namespaces+0xbd/0xd0 [ 31.963658] do_exit+0x1aee/0x2730 [ 31.967174] ? do_raw_spin_unlock+0x31/0x2e0 [ 31.971555] ? mm_update_next_owner+0x980/0x980 [ 31.976200] ? kasan_check_write+0x14/0x20 [ 31.980410] ? do_raw_spin_lock+0xc1/0x200 [ 31.984619] ? trace_hardirqs_off+0xd/0x10 [ 31.988829] ? _raw_spin_unlock_irqrestore+0x63/0xc0 [ 31.993908] ? debug_check_no_obj_freed+0x2ff/0x584 [ 31.998899] ? trace_hardirqs_off+0xd/0x10 [ 32.003108] ? quarantine_put+0xeb/0x190 [ 32.007143] ? kfree+0x111/0x260 [ 32.010484] ? ___sys_sendmsg+0x31a/0x940 [ 32.014604] ? trace_hardirqs_on_caller+0x421/0x5c0 [ 32.019593] ? trace_hardirqs_on+0xd/0x10 [ 32.023719] ? ___sys_sendmsg+0x31f/0x940 [ 32.027850] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 32.033363] ? copy_msghdr_from_user+0x560/0x560 [ 32.038096] ? vm_insert_mixed_mkwrite+0x40/0x40 [ 32.042825] ? graph_lock+0x170/0x170 [ 32.046606] ? graph_lock+0x170/0x170 [ 32.050383] ? find_held_lock+0x36/0x1c0 [ 32.054422] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 32.059941] ? __fget_light+0x2ef/0x430 [ 32.063889] ? fget_raw+0x20/0x20 [ 32.067316] ? find_held_lock+0x36/0x1c0 [ 32.071353] ? lock_downgrade+0x8e0/0x8e0 [ 32.075488] ? handle_mm_fault+0x8c0/0xc70 [ 32.079701] ? __sanitizer_cov_trace_const_cmp8+0x18/0x20 [ 32.085215] ? sockfd_lookup_light+0xc5/0x160 [ 32.089684] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 32.095195] ? __sys_sendmsg+0x1aa/0x270 [ 32.099230] ? SyS_shutdown+0x30/0x30 [ 32.103014] ? __do_page_fault+0x441/0xe40 [ 32.107228] do_group_exit+0x16f/0x430 [ 32.111091] ? SyS_exit+0x30/0x30 [ 32.114522] ? syscall_slow_exit_work+0x4f0/0x4f0 [ 32.119340] ? do_syscall_64+0xb7/0x9d0 [ 32.123288] ? do_group_exit+0x430/0x430 [ 32.127326] SyS_exit_group+0x1d/0x20 [ 32.131103] do_syscall_64+0x29e/0x9d0 [ 32.134963] ? vmalloc_sync_all+0x30/0x30 [ 32.139088] ? trace_hardirqs_on_thunk+0x1a/0x1c [ 32.143818] ? syscall_return_slowpath+0x5c0/0x5c0 [ 32.148722] ? syscall_return_slowpath+0x30f/0x5c0 [ 32.153633] ? entry_SYSCALL_64_after_hwframe+0x52/0xb7 [ 32.158979] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 32.163796] entry_SYSCALL_64_after_hwframe+0x42/0xb7 [ 32.168969] RIP: 0033:0x4418d9 [ 32.172132] RSP: 002b:00007ffe7dc2b3f8 EFLAGS: 00000206 ORIG_RAX: 00000000000000e7 [ 32.179814] RAX: ffffffffffffffda RBX: 000000000000001b RCX: 00000000004418d9 [ 32.187059] RDX: 00000000004418d9 RSI: 0000000000000000 RDI: 0000000000000001 [ 32.194302] RBP: 00000000004a34d8 R08: 00000000012c26b0 R09: 00000000006cd018 [ 32.201545] R10: 00000000012c26b0 R11: 0000000000000206 R12: 00007ffe7dc2b508 [ 32.208789] R13: 0000000000402660 R14: 0000000000000000 R15: 0000000000000000 [ 32.216435] Dumping ftrace buffer: [ 32.219955] (ftrace buffer empty) [ 32.223638] Kernel Offset: disabled [ 32.227239] Rebooting in 86400 seconds..