net.ipv6.conf.syz0.accept_dad = 0 net.ipv6.conf.syz0.router_solicitations = 0 executing program syzkaller login: [ 18.861830] ================================================================== [ 18.862466] BUG: KASAN: stack-out-of-bounds in xfrm_state_find+0x303d/0x3170 [ 18.863167] Read of size 4 at addr ffff88003ca767e8 by task syzkaller597121/2951 [ 18.863792] [ 18.863930] CPU: 0 PID: 2951 Comm: syzkaller597121 Not tainted 4.13.0-rc4-next-20170811 #1 [ 18.864639] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS Bochs 01/01/2011 [ 18.865316] Call Trace: [ 18.865531] dump_stack+0x194/0x257 [ 18.865832] ? arch_local_irq_restore+0x53/0x53 [ 18.866534] ? show_regs_print_info+0x65/0x65 [ 18.866909] ? lock_release+0xa40/0xa40 [ 18.867240] ? xfrm_state_find+0x303d/0x3170 [ 18.867613] print_address_description+0x7f/0x260 [ 18.868065] ? xfrm_state_find+0x303d/0x3170 [ 18.868444] kasan_report+0x24e/0x340 [ 18.868771] __asan_report_load4_noabort+0x14/0x20 [ 18.869189] xfrm_state_find+0x303d/0x3170 [ 18.869599] ? xfrm_state_afinfo_get_rcu+0x160/0x160 [ 18.870036] ? print_usage_bug+0x480/0x480 [ 18.870391] ? __lock_acquire+0x6aa/0x3bc0 [ 18.870759] ? debug_check_no_locks_freed+0x3c0/0x3c0 [ 18.871195] ? __lock_acquire+0x6aa/0x3bc0 [ 18.871571] ? debug_check_no_locks_freed+0x3c0/0x3c0 [ 18.872000] ? print_usage_bug+0x480/0x480 [ 18.872358] ? debug_check_no_locks_freed+0x3c0/0x3c0 [ 18.872802] ? check_noncircular+0x20/0x20 [ 18.873160] xfrm_tmpl_resolve+0x309/0xc00 [ 18.873549] ? __xfrm_dst_lookup+0x120/0x120 [ 18.873912] ? __lock_is_held+0xb6/0x140 [ 18.874313] ? rcu_read_lock_sched_held+0x108/0x120 [ 18.874726] ? fib_table_lookup+0xa07/0x1a30 [ 18.875098] xfrm_resolve_and_create_bundle+0x186/0x2460 [ 18.875549] ? check_noncircular+0x20/0x20 [ 18.876393] ? check_noncircular+0x20/0x20 [ 18.876766] ? __xfrm_decode_session+0x100/0x100 [ 18.877163] ? find_held_lock+0x35/0x1d0 [ 18.877519] ? xfrm_sk_policy_lookup+0x2a6/0x3d0 [ 18.877950] ? lock_downgrade+0x990/0x990 [ 18.878326] ? lock_release+0xa40/0xa40 [ 18.878658] ? refcount_inc_not_zero+0xfe/0x180 [ 18.879066] ? xfrm_selector_match+0x3b/0xe00 [ 18.879452] ? xfrm_sk_policy_lookup+0x2cf/0x3d0 [ 18.879910] ? xfrm_selector_match+0xe00/0xe00 [ 18.880325] xfrm_lookup+0xefb/0x2540 [ 18.880664] ? xfrm_lookup+0xefb/0x2540 [ 18.881044] ? xfrm_policy_lookup_bytype.constprop.48+0x16f0/0x16f0 [ 18.881664] ? __fib_validate_source+0x72d/0x1a10 [ 18.882070] ? print_usage_bug+0x480/0x480 [ 18.882475] ? find_held_lock+0x35/0x1d0 [ 18.882867] ? ip_route_output_key_hash+0x229/0x370 [ 18.883281] ? lock_downgrade+0x990/0x990 [ 18.883626] ? lock_release+0xa40/0xa40 [ 18.883992] ? __lock_acquire+0x6aa/0x3bc0 [ 18.884367] ? ip_route_output_key_hash+0x252/0x370 [ 18.884778] ? ip_route_output_key_hash_rcu+0x2bb0/0x2bb0 [ 18.885233] ? debug_check_no_locks_freed+0x3c0/0x3c0 [ 18.885663] xfrm_lookup_route+0x39/0x1a0 [ 18.886000] ip_route_output_flow+0x7c/0xa0 [ 18.886360] inet_csk_route_req+0x5d8/0x990 [ 18.886711] ? debug_check_no_locks_freed+0x3c0/0x3c0 [ 18.887143] tcp_v4_send_synack+0x1e4/0x270 [ 18.887525] ? tcp_v4_send_check+0x90/0x90 [ 18.887938] ? prandom_u32_state+0x13/0x180 [ 18.888324] tcp_rtx_synack+0x119/0x2e0 [ 18.888690] ? tcp_event_new_data_sent+0x2e0/0x2e0 [ 18.889097] ? tcp_v4_parse_md5_keys+0x2c0/0x2c0 [ 18.889494] inet_rtx_syn_ack+0x64/0xd0 [ 18.889818] tcp_check_req+0xae3/0x1620 [ 18.890149] ? tcp_parse_md5sig_option+0xbe/0x160 [ 18.890543] ? tcp_openreq_init_rwin+0xae0/0xae0 [ 18.890942] ? refcount_inc_not_zero+0xfe/0x180 [ 18.891327] ? refcount_add+0x60/0x60 [ 18.891680] ? tcp_v4_reqsk_send_ack+0x3e0/0x3e0 [ 18.892079] ? check_noncircular+0x20/0x20 [ 18.892431] tcp_v4_rcv+0x1693/0x2dd0 [ 18.892744] ? lock_acquire+0x1d5/0x580 [ 18.893075] ? lock_acquire+0x1d5/0x580 [ 18.893418] ? tcp_v4_early_demux+0xa30/0xa30 [ 18.893804] ip_local_deliver_finish+0x2e2/0xba0 [ 18.894203] ? inet_del_offload+0x40/0x40 [ 18.894554] ip_local_deliver+0x1ce/0x6d0 [ 18.894906] ? ip_call_ra_chain+0x6d0/0x6d0 [ 18.895273] ? inet_del_offload+0x40/0x40 [ 18.895625] ip_rcv_finish+0x8db/0x19c0 [ 18.895952] ? iptable_nat_ipv4_fn+0x40/0x40 [ 18.896325] ? ip_local_deliver_finish+0xba0/0xba0 [ 18.896733] ? ip_rcv+0xf05/0x17d0 [ 18.897029] ? lock_downgrade+0x990/0x990 [ 18.897737] ? tcp_v4_send_synack+0x270/0x270 [ 18.898111] ? rcu_read_lock_held+0xa9/0xc0 [ 18.898466] ? nf_hook_slow+0x12d/0x290 [ 18.898806] ip_rcv+0xc3f/0x17d0 [ 18.899094] ? ip_local_deliver+0x6d0/0x6d0 [ 18.899448] ? __free_insn_slot+0x5c0/0x5c0 [ 18.899816] ? __lock_acquire+0x6aa/0x3bc0 [ 18.900219] ? ip_local_deliver_finish+0xba0/0xba0 [ 18.900628] ? ip_local_deliver+0x6d0/0x6d0 [ 18.900987] __netif_receive_skb_core+0x19af/0x33d0 [ 18.901402] ? depot_save_stack+0x12c/0x490 [ 18.901763] ? nf_ingress+0x9f0/0x9f0 [ 18.902083] ? debug_check_no_locks_freed+0x3c0/0x3c0 [ 18.902507] ? sock_alloc_send_pskb+0x7b4/0x9d0 [ 18.902887] ? tun_chr_write_iter+0xd8/0x190 [ 18.903252] ? __vfs_write+0x684/0x970 [ 18.903568] ? vfs_write+0x189/0x510 [ 18.903848] ? __skb_flow_get_ports+0x151/0x400 [ 18.904243] ? __skb_flow_get_ports+0x151/0x400 [ 18.904635] ? check_noncircular+0x20/0x20 [ 18.904994] ? __skb_flow_get_ports+0x400/0x400 [ 18.905382] ? kmem_cache_alloc_node_trace+0x266/0x710 [ 18.905811] ? find_held_lock+0x35/0x1d0 [ 18.906158] ? lock_downgrade+0x990/0x990 [ 18.906504] ? skb_copy_and_csum_dev+0x281/0x360 [ 18.906891] ? pvclock_read_flags+0x160/0x160 [ 18.907268] ? lock_acquire+0x1d5/0x580 [ 18.907594] ? lock_acquire+0x1d5/0x580 [ 18.907919] ? netif_receive_skb_internal+0x85/0x4d0 [ 18.908342] ? ktime_get_with_offset+0x2c1/0x420 [ 18.908737] ? lock_release+0xa40/0xa40 [ 18.909067] ? do_gettimeofday+0x190/0x190 [ 18.909419] ? find_held_lock+0x35/0x1d0 [ 18.909785] __netif_receive_skb+0x2c/0x1b0 [ 18.910144] ? __netif_receive_skb+0x2c/0x1b0 [ 18.910516] netif_receive_skb_internal+0xfd/0x4d0 [ 18.910920] ? dev_cpu_dead+0xb00/0xb00 [ 18.911249] ? check_same_owner+0x320/0x320 [ 18.911612] ? rcu_pm_notify+0xc0/0xc0 [ 18.911944] netif_receive_skb+0xae/0x390 [ 18.912292] ? netif_receive_skb_internal+0x4d0/0x4d0 [ 18.912716] ? _copy_from_iter+0x367/0xf30 [ 18.913068] ? __check_object_size+0x268/0x500 [ 18.913451] ? tun_rx_batched.isra.42+0x5bd/0x860 [ 18.913851] tun_rx_batched.isra.42+0x5e7/0x860 [ 18.914240] ? skb_get_hash_perturb+0x9d0/0x9d0 [ 18.914635] ? tun_sock_write_space+0x370/0x370 [ 18.915052] ? tun_free_netdev+0x1b0/0x1b0 [ 18.915414] tun_get_user+0x1076/0x28f0 [ 18.915770] ? tun_chr_ioctl+0x40/0x40 [ 18.916105] ? find_held_lock+0x35/0x1d0 [ 18.916450] ? __fget+0x333/0x570 [ 18.916748] ? find_held_lock+0x35/0x1d0 [ 18.917108] ? __tun_get+0x1ab/0x2e0 [ 18.917415] ? lock_downgrade+0x990/0x990 [ 18.917761] ? lock_release+0xa40/0xa40 [ 18.918112] ? __lock_is_held+0xb6/0x140 [ 18.918429] ? __tun_get+0x1d4/0x2e0 [ 18.919134] ? tun_chr_close+0x60/0x60 [ 18.919467] tun_chr_write_iter+0xd8/0x190 [ 18.919832] __vfs_write+0x684/0x970 [ 18.920160] ? default_llseek+0x290/0x290 [ 18.920511] ? _cond_resched+0x14/0x30 [ 18.920837] ? avc_policy_seqno+0x9/0x20 [ 18.921173] ? selinux_file_permission+0x82/0x460 [ 18.921583] ? rw_verify_area+0xe5/0x2b0 [ 18.921918] ? __fdget_raw+0x20/0x20 [ 18.922232] vfs_write+0x189/0x510 [ 18.922530] SyS_write+0xef/0x220 [ 18.922818] ? SyS_read+0x220/0x220 [ 18.923121] ? trace_hardirqs_on_caller+0x421/0x5c0 [ 18.923575] ? trace_hardirqs_on_thunk+0x1a/0x1c [ 18.924020] entry_SYSCALL_64_fastpath+0x1f/0xbe [ 18.924437] RIP: 0033:0x405f81 [ 18.924710] RSP: 002b:00007f52da54dd80 EFLAGS: 00000293 ORIG_RAX: 0000000000000001 [ 18.925388] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 0000000000405f81 [ 18.925974] RDX: 0000000000000036 RSI: 0000000020002000 RDI: 0000000000000003 [ 18.926565] RBP: 0000000000000086 R08: 0000000000000013 R09: 00007f52da54e700 [ 18.927166] R10: 00007f52da54e9d0 R11: 0000000000000293 R12: 0000000000000000 [ 18.927827] R13: 0000000000000000 R14: 00007f52da54e9c0 R15: 00007f52da54e700 [ 18.928429] [ 18.928567] The buggy address belongs to the page: [ 18.928971] page:ffffea0000d449d0 count:0 mapcount:0 mapping: (null) index:0xffff88003ca773c0 [ 18.929748] flags: 0x100000000000000() [ 18.930095] raw: 0100000000000000 0000000000000000 ffff88003ca773c0 00000000ffffffff [ 18.930730] raw: 0000000000000000 dead000000000200 0000000000000000 [ 18.931250] page dumped because: kasan: bad access detected [ 18.931715] [ 18.931850] Memory state around the buggy address: [ 18.932268] ffff88003ca76680: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 [ 18.932874] ffff88003ca76700: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 [ 18.933481] >ffff88003ca76780: 00 00 f1 f1 f1 f1 00 00 00 00 00 00 00 f2 f3 f3 [ 18.934089] ^ [ 18.934704] ffff88003ca76800: f3 f3 00 00 00 00 00 00 00 f1 f1 f1 f1 00 00 00 [ 18.935368] ffff88003ca76880: 00 00 00 00 00 00 00 f2 f2 f3 f3 f3 f3 00 00 00 [ 18.935979] ================================================================== [ 18.936604] Disabling lock debugging due to kernel taint [ 18.937124] Kernel panic - not syncing: panic_on_warn set ... [ 18.937124] [ 18.937836] CPU: 0 PID: 2951 Comm: syzkaller597121 Tainted: G B 4.13.0-rc4-next-20170811 #1 [ 18.938673] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS Bochs 01/01/2011 [ 18.939426] Call Trace: [ 18.939646] dump_stack+0x194/0x257 [ 18.940174] ? arch_local_irq_restore+0x53/0x53 [ 18.940556] ? trace_hardirqs_on_thunk+0x1a/0x1c [ 18.940946] ? xfrm_state_find+0x2fb0/0x3170 [ 18.941321] panic+0x1e4/0x417 [ 18.941625] ? __warn+0x1d9/0x1d9 [ 18.941955] ? xfrm_state_find+0x303d/0x3170 [ 18.942362] kasan_end_report+0x50/0x50 [ 18.942688] kasan_report+0x137/0x340 [ 18.943003] __asan_report_load4_noabort+0x14/0x20 [ 18.943414] xfrm_state_find+0x303d/0x3170 [ 18.943780] ? xfrm_state_afinfo_get_rcu+0x160/0x160 [ 18.944199] ? print_usage_bug+0x480/0x480 [ 18.944548] ? __lock_acquire+0x6aa/0x3bc0 [ 18.944925] ? debug_check_no_locks_freed+0x3c0/0x3c0 [ 18.945354] ? __lock_acquire+0x6aa/0x3bc0 [ 18.945708] ? debug_check_no_locks_freed+0x3c0/0x3c0 [ 18.946135] ? print_usage_bug+0x480/0x480 [ 18.946484] ? debug_check_no_locks_freed+0x3c0/0x3c0 [ 18.946908] ? check_noncircular+0x20/0x20 [ 18.947258] xfrm_tmpl_resolve+0x309/0xc00 [ 18.947617] ? __xfrm_dst_lookup+0x120/0x120 [ 18.948009] ? __lock_is_held+0xb6/0x140 [ 18.948387] ? rcu_read_lock_sched_held+0x108/0x120 [ 18.948787] ? fib_table_lookup+0xa07/0x1a30 [ 18.949180] xfrm_resolve_and_create_bundle+0x186/0x2460 [ 18.949694] ? check_noncircular+0x20/0x20 [ 18.950068] ? check_noncircular+0x20/0x20 [ 18.950490] ? __xfrm_decode_session+0x100/0x100 [ 18.950983] ? find_held_lock+0x35/0x1d0 [ 18.951411] ? xfrm_sk_policy_lookup+0x2a6/0x3d0 [ 18.951869] ? lock_downgrade+0x990/0x990 [ 18.952254] ? lock_release+0xa40/0xa40 [ 18.952580] ? refcount_inc_not_zero+0xfe/0x180 [ 18.952964] ? xfrm_selector_match+0x3b/0xe00 [ 18.953334] ? xfrm_sk_policy_lookup+0x2cf/0x3d0 [ 18.953718] ? xfrm_selector_match+0xe00/0xe00 [ 18.954095] xfrm_lookup+0xefb/0x2540 [ 18.954407] ? xfrm_lookup+0xefb/0x2540 [ 18.954825] ? xfrm_policy_lookup_bytype.constprop.48+0x16f0/0x16f0 [ 18.955423] ? __fib_validate_source+0x72d/0x1a10 [ 18.955853] ? print_usage_bug+0x480/0x480 [ 18.956288] ? find_held_lock+0x35/0x1d0 [ 18.956743] ? ip_route_output_key_hash+0x229/0x370 [ 18.957168] ? lock_downgrade+0x990/0x990 [ 18.957564] ? lock_release+0xa40/0xa40 [ 18.957906] ? __lock_acquire+0x6aa/0x3bc0 [ 18.958261] ? ip_route_output_key_hash+0x252/0x370 [ 18.958667] ? ip_route_output_key_hash_rcu+0x2bb0/0x2bb0 [ 18.959120] ? debug_check_no_locks_freed+0x3c0/0x3c0 [ 18.959547] xfrm_lookup_route+0x39/0x1a0 [ 18.959890] ip_route_output_flow+0x7c/0xa0 [ 18.960248] inet_csk_route_req+0x5d8/0x990 [ 18.960603] ? debug_check_no_locks_freed+0x3c0/0x3c0 [ 18.961114] tcp_v4_send_synack+0x1e4/0x270 [ 18.961713] ? tcp_v4_send_check+0x90/0x90 [ 18.962011] ? prandom_u32_state+0x13/0x180 [ 18.962311] tcp_rtx_synack+0x119/0x2e0 [ 18.962610] ? tcp_event_new_data_sent+0x2e0/0x2e0 [ 18.962988] ? tcp_v4_parse_md5_keys+0x2c0/0x2c0 [ 18.963318] inet_rtx_syn_ack+0x64/0xd0 [ 18.963630] tcp_check_req+0xae3/0x1620 [ 18.963957] ? tcp_parse_md5sig_option+0xbe/0x160 [ 18.964413] ? tcp_openreq_init_rwin+0xae0/0xae0 [ 18.964841] ? refcount_inc_not_zero+0xfe/0x180 [ 18.965238] ? refcount_add+0x60/0x60 [ 18.965547] ? tcp_v4_reqsk_send_ack+0x3e0/0x3e0 [ 18.965934] ? check_noncircular+0x20/0x20 [ 18.966366] tcp_v4_rcv+0x1693/0x2dd0 [ 18.966678] ? lock_acquire+0x1d5/0x580 [ 18.967028] ? lock_acquire+0x1d5/0x580 [ 18.967428] ? tcp_v4_early_demux+0xa30/0xa30 [ 18.967840] ip_local_deliver_finish+0x2e2/0xba0 [ 18.968268] ? inet_del_offload+0x40/0x40 [ 18.968608] ip_local_deliver+0x1ce/0x6d0 [ 18.968946] ? ip_call_ra_chain+0x6d0/0x6d0 [ 18.969302] ? inet_del_offload+0x40/0x40 [ 18.969669] ip_rcv_finish+0x8db/0x19c0 [ 18.969991] ? iptable_nat_ipv4_fn+0x40/0x40 [ 18.970382] ? ip_local_deliver_finish+0xba0/0xba0 [ 18.970847] ? ip_rcv+0xf05/0x17d0 [ 18.971164] ? lock_downgrade+0x990/0x990 [ 18.971502] ? tcp_v4_send_synack+0x270/0x270 [ 18.971899] ? rcu_read_lock_held+0xa9/0xc0 [ 18.972251] ? nf_hook_slow+0x12d/0x290 [ 18.972608] ip_rcv+0xc3f/0x17d0 [ 18.972884] ? ip_local_deliver+0x6d0/0x6d0 [ 18.973234] ? __free_insn_slot+0x5c0/0x5c0 [ 18.973584] ? __lock_acquire+0x6aa/0x3bc0 [ 18.973931] ? ip_local_deliver_finish+0xba0/0xba0 [ 18.974332] ? ip_local_deliver+0x6d0/0x6d0 [ 18.974686] __netif_receive_skb_core+0x19af/0x33d0 [ 18.975100] ? depot_save_stack+0x12c/0x490 [ 18.975456] ? nf_ingress+0x9f0/0x9f0 [ 18.975777] ? debug_check_no_locks_freed+0x3c0/0x3c0 [ 18.976198] ? sock_alloc_send_pskb+0x7b4/0x9d0 [ 18.976579] ? tun_chr_write_iter+0xd8/0x190 [ 18.976950] ? __vfs_write+0x684/0x970 [ 18.977308] ? vfs_write+0x189/0x510 [ 18.977624] ? __skb_flow_get_ports+0x151/0x400 [ 18.978008] ? __skb_flow_get_ports+0x151/0x400 [ 18.978433] ? check_noncircular+0x20/0x20 [ 18.978824] ? __skb_flow_get_ports+0x400/0x400 [ 18.979233] ? kmem_cache_alloc_node_trace+0x266/0x710 [ 18.979706] ? find_held_lock+0x35/0x1d0 [ 18.980044] ? lock_downgrade+0x990/0x990 [ 18.980385] ? skb_copy_and_csum_dev+0x281/0x360 [ 18.980773] ? pvclock_read_flags+0x160/0x160 [ 18.981146] ? lock_acquire+0x1d5/0x580 [ 18.981471] ? lock_acquire+0x1d5/0x580 [ 18.981812] ? netif_receive_skb_internal+0x85/0x4d0 [ 18.982244] ? ktime_get_with_offset+0x2c1/0x420 [ 18.982628] ? lock_release+0xa40/0xa40 [ 18.982926] ? do_gettimeofday+0x190/0x190 [ 18.983533] ? find_held_lock+0x35/0x1d0 [ 18.983882] __netif_receive_skb+0x2c/0x1b0 [ 18.984277] ? __netif_receive_skb+0x2c/0x1b0 [ 18.984686] netif_receive_skb_internal+0xfd/0x4d0 [ 18.985118] ? dev_cpu_dead+0xb00/0xb00 [ 18.985469] ? check_same_owner+0x320/0x320 [ 18.985863] ? rcu_pm_notify+0xc0/0xc0 [ 18.986205] netif_receive_skb+0xae/0x390 [ 18.986547] ? netif_receive_skb_internal+0x4d0/0x4d0 [ 18.987028] ? _copy_from_iter+0x367/0xf30 [ 18.987379] ? __check_object_size+0x268/0x500 [ 18.987738] ? tun_rx_batched.isra.42+0x5bd/0x860 [ 18.988170] tun_rx_batched.isra.42+0x5e7/0x860 [ 18.988551] ? skb_get_hash_perturb+0x9d0/0x9d0 [ 18.988960] ? tun_sock_write_space+0x370/0x370 [ 18.989395] ? tun_free_netdev+0x1b0/0x1b0 [ 18.989759] tun_get_user+0x1076/0x28f0 [ 18.990112] ? tun_chr_ioctl+0x40/0x40 [ 18.990462] ? find_held_lock+0x35/0x1d0 [ 18.990797] ? __fget+0x333/0x570 [ 18.991111] ? find_held_lock+0x35/0x1d0 [ 18.991472] ? __tun_get+0x1ab/0x2e0 [ 18.991783] ? lock_downgrade+0x990/0x990 [ 18.992126] ? lock_release+0xa40/0xa40 [ 18.992451] ? __lock_is_held+0xb6/0x140 [ 18.992827] ? __tun_get+0x1d4/0x2e0 [ 18.993213] ? tun_chr_close+0x60/0x60 [ 18.993577] tun_chr_write_iter+0xd8/0x190 [ 18.993993] __vfs_write+0x684/0x970 [ 18.994341] ? default_llseek+0x290/0x290 [ 18.994711] ? _cond_resched+0x14/0x30 [ 18.995085] ? avc_policy_seqno+0x9/0x20 [ 18.995445] ? selinux_file_permission+0x82/0x460 [ 18.995873] ? rw_verify_area+0xe5/0x2b0 [ 18.996209] ? __fdget_raw+0x20/0x20 [ 18.996596] vfs_write+0x189/0x510 [ 18.996907] SyS_write+0xef/0x220 [ 18.997195] ? SyS_read+0x220/0x220 [ 18.997512] ? trace_hardirqs_on_caller+0x421/0x5c0 [ 18.997923] ? trace_hardirqs_on_thunk+0x1a/0x1c [ 18.998318] entry_SYSCALL_64_fastpath+0x1f/0xbe [ 18.998705] RIP: 0033:0x405f81 [ 18.998963] RSP: 002b:00007f52da54dd80 EFLAGS: 00000293 ORIG_RAX: 0000000000000001 [ 18.999592] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 0000000000405f81 [ 19.000143] RDX: 0000000000000036 RSI: 0000000020002000 RDI: 0000000000000003 [ 19.000757] RBP: 0000000000000086 R08: 0000000000000013 R09: 00007f52da54e700 [ 19.001350] R10: 00007f52da54e9d0 R11: 0000000000000293 R12: 0000000000000000 [ 19.001926] R13: 0000000000000000 R14: 00007f52da54e9c0 R15: 00007f52da54e700 [ 19.002579] Dumping ftrace buffer: [ 19.002897] (ftrace buffer empty) [ 19.003169] Kernel Offset: disabled [ 19.003412] Rebooting in 86400 seconds..