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 '10.128.0.8' (ECDSA) to the list of known hosts. executing program syzkaller login: [ 35.215777] F2FS-fs (loop0): Magic Mismatch, valid(0xf2f52010) - read(0x0) [ 35.222894] F2FS-fs (loop0): Can't find valid F2FS filesystem in 1th superblock [ 35.231582] F2FS-fs (loop0): invalid crc value [ 35.237649] ================================================================== [ 35.245068] BUG: KASAN: slab-out-of-bounds in build_segment_manager+0xb92d/0xbf70 [ 35.252677] Read of size 4 at addr ffff8801ac7b66e0 by task syzkaller806281/4519 [ 35.260183] [ 35.261792] CPU: 0 PID: 4519 Comm: syzkaller806281 Not tainted 4.17.0-rc1+ #8 [ 35.269042] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 35.278374] Call Trace: [ 35.280944] dump_stack+0x1b9/0x294 [ 35.284552] ? dump_stack_print_info.cold.2+0x52/0x52 [ 35.289724] ? printk+0x9e/0xba [ 35.292982] ? kmsg_dump_rewind_nolock+0xe4/0xe4 [ 35.297718] ? kasan_check_write+0x14/0x20 [ 35.301935] print_address_description+0x6c/0x20b [ 35.306765] ? build_segment_manager+0xb92d/0xbf70 [ 35.311674] kasan_report.cold.7+0x242/0x2fe [ 35.316066] __asan_report_load4_noabort+0x14/0x20 [ 35.320973] build_segment_manager+0xb92d/0xbf70 [ 35.325716] ? flush_sit_entries+0x2c40/0x2c40 [ 35.330277] ? vprintk_emit+0x3e5/0xdd0 [ 35.334235] ? console_unlock+0x1100/0x1100 [ 35.338538] ? lock_downgrade+0x8e0/0x8e0 [ 35.342665] ? mark_held_locks+0xc9/0x160 [ 35.346789] ? do_raw_spin_trylock+0x1b0/0x1b0 [ 35.351354] ? vprintk_default+0x28/0x30 [ 35.355404] ? vprintk_func+0x81/0xe7 [ 35.359184] ? printk+0x9e/0xba [ 35.362441] ? kmsg_dump_rewind_nolock+0xe4/0xe4 [ 35.367180] ? __sanitizer_cov_trace_const_cmp8+0x18/0x20 [ 35.372698] ? f2fs_msg+0x11e/0x170 [ 35.376303] ? f2fs_quota_read+0x1030/0x1030 [ 35.380704] ? crc32_pclmul_le+0x49/0x120 [ 35.384837] ? __asan_allocas_unpoison+0x16/0x20 [ 35.389574] ? crypto_shash_update+0x10b/0x2a0 [ 35.394134] ? get_checkpoint_version+0x351/0x5d0 [ 35.398957] ? __sanitizer_cov_trace_const_cmp1+0x1a/0x20 [ 35.404472] ? unlock_page+0x1d0/0x2b0 [ 35.408340] ? wake_up_page_bit+0x580/0x580 [ 35.412644] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 35.418159] ? bpf_prog_kallsyms_find+0xd6/0x4a0 [ 35.422892] ? modules_open+0xa0/0xa0 [ 35.426672] ? __bpf_trace_bpf_map_next_key+0x40/0x40 [ 35.431843] ? lock_downgrade+0x8e0/0x8e0 [ 35.435970] ? noop_count+0x40/0x40 [ 35.439588] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 35.445102] ? bpf_prog_kallsyms_find+0xd6/0x4a0 [ 35.449834] ? modules_open+0xa0/0xa0 [ 35.453610] ? __bpf_trace_bpf_map_next_key+0x40/0x40 [ 35.458778] ? kernel_text_address+0x79/0xf0 [ 35.463171] ? is_bpf_text_address+0xae/0x170 [ 35.467642] ? lock_downgrade+0x8e0/0x8e0 [ 35.471767] ? lock_release+0xa10/0xa10 [ 35.475722] ? kasan_check_read+0x11/0x20 [ 35.479849] ? rcu_is_watching+0x85/0x140 [ 35.483975] ? rcu_bh_force_quiescent_state+0x20/0x20 [ 35.489144] ? is_bpf_text_address+0xd7/0x170 [ 35.493617] ? kernel_text_address+0x79/0xf0 [ 35.498003] ? __unwind_start+0x166/0x330 [ 35.502127] ? __kernel_text_address+0xd/0x40 [ 35.506599] ? unwind_get_return_address+0x61/0xa0 [ 35.511508] ? __save_stack_trace+0x7e/0xd0 [ 35.515808] ? add_lock_to_list.isra.29+0x1e4/0x490 [ 35.520803] ? trace_hardirqs_off+0x10/0x10 [ 35.525111] ? save_stack_trace+0x1a/0x20 [ 35.529233] ? save_trace+0xe0/0x290 [ 35.532934] ? kasan_check_read+0x11/0x20 [ 35.537060] ? __lock_acquire+0x28fb/0x5140 [ 35.541367] ? debug_check_no_locks_freed+0x310/0x310 [ 35.546533] ? do_raw_spin_trylock+0x1b0/0x1b0 [ 35.551094] ? kasan_check_read+0x11/0x20 [ 35.555223] ? mark_held_locks+0xc9/0x160 [ 35.559350] ? print_usage_bug+0xc0/0xc0 [ 35.563397] ? trace_hardirqs_on_caller+0x421/0x5c0 [ 35.568389] ? __lockdep_init_map+0x105/0x590 [ 35.572861] ? lockdep_init_map+0x9/0x10 [ 35.576898] ? __mutex_init+0x1ef/0x280 [ 35.580852] ? print_usage_bug+0xc0/0xc0 [ 35.584888] ? mark_held_locks+0xc9/0x160 [ 35.589014] ? __raw_spin_lock_init+0x1c/0x100 [ 35.593574] ? trace_hardirqs_on_caller+0x421/0x5c0 [ 35.598565] ? __lockdep_init_map+0x105/0x590 [ 35.603040] ? lockdep_init_map+0x9/0x10 [ 35.607079] ? mark_held_locks+0xc9/0x160 [ 35.611205] ? f2fs_update_extent_cache_range+0x1d0/0x1d0 [ 35.616717] ? __raw_spin_lock_init+0x1c/0x100 [ 35.621278] ? __lockdep_init_map+0x105/0x590 [ 35.625759] ? lockdep_init_map+0x9/0x10 [ 35.629797] ? __raw_spin_lock_init+0x2d/0x100 [ 35.634365] f2fs_fill_super+0x4095/0x7bf0 [ 35.638592] ? f2fs_commit_super+0x400/0x400 [ 35.642976] ? lock_downgrade+0x8e0/0x8e0 [ 35.647104] ? lock_release+0xa10/0xa10 [ 35.651059] ? check_same_owner+0x320/0x320 [ 35.655359] ? __sanitizer_cov_trace_cmp4+0x16/0x20 [ 35.660364] ? widen_string+0xd8/0x2d0 [ 35.664228] ? rcu_note_context_switch+0x710/0x710 [ 35.669136] ? format_decode+0xae0/0xae0 [ 35.673173] ? graph_lock+0x170/0x170 [ 35.676955] ? widen_string+0x2d0/0x2d0 [ 35.680907] ? sget_userns+0x2dd/0xf20 [ 35.684773] ? find_held_lock+0x13f/0x1c0 [ 35.688900] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 35.694415] ? bdev_name.isra.7+0x1a1/0x1f0 [ 35.698715] ? pointer+0x1b0/0xa20 [ 35.702234] ? netdev_bits+0xb0/0xb0 [ 35.705923] ? format_decode+0x1a9/0xae0 [ 35.709964] ? set_precision+0xe0/0xe0 [ 35.713833] ? __sanitizer_cov_trace_switch+0x53/0x90 [ 35.719003] ? __sanitizer_cov_trace_const_cmp8+0x18/0x20 [ 35.724517] ? vsnprintf+0x242/0x1b40 [ 35.728302] ? pointer+0xa20/0xa20 [ 35.731827] ? snprintf+0xa5/0xd0 [ 35.735257] ? vsprintf+0x40/0x40 [ 35.738689] ? __sanitizer_cov_trace_cmp4+0x16/0x20 [ 35.743681] ? set_blocksize+0x2c4/0x350 [ 35.747725] mount_bdev+0x30c/0x3e0 [ 35.751329] ? f2fs_commit_super+0x400/0x400 [ 35.755714] ? mount_bdev+0x30c/0x3e0 [ 35.759492] ? f2fs_commit_super+0x400/0x400 [ 35.763881] f2fs_mount+0x34/0x40 [ 35.767315] mount_fs+0xae/0x328 [ 35.770660] vfs_kern_mount.part.34+0xd4/0x4d0 [ 35.775220] ? may_umount+0xb0/0xb0 [ 35.778825] ? _raw_read_unlock+0x22/0x30 [ 35.782952] ? __get_fs_type+0x97/0xc0 [ 35.786821] do_mount+0x564/0x3070 [ 35.790340] ? copy_mount_string+0x40/0x40 [ 35.794553] ? rcu_pm_notify+0xc0/0xc0 [ 35.798421] ? copy_mount_options+0x5f/0x380 [ 35.802807] ? rcu_read_lock_sched_held+0x108/0x120 [ 35.807802] ? kmem_cache_alloc_trace+0x616/0x780 [ 35.812630] ? __sanitizer_cov_trace_const_cmp8+0x18/0x20 [ 35.818147] ? _copy_from_user+0xdf/0x150 [ 35.822275] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 35.827791] ? copy_mount_options+0x285/0x380 [ 35.832267] ksys_mount+0x12d/0x140 [ 35.835877] __x64_sys_mount+0xbe/0x150 [ 35.839831] ? trace_hardirqs_on_caller+0x421/0x5c0 [ 35.844826] do_syscall_64+0x1b1/0x800 [ 35.848692] ? syscall_slow_exit_work+0x4f0/0x4f0 [ 35.853518] ? syscall_return_slowpath+0x5c0/0x5c0 [ 35.858428] ? syscall_return_slowpath+0x30f/0x5c0 [ 35.863339] ? entry_SYSCALL_64_after_hwframe+0x59/0xbe [ 35.868682] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 35.873505] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 35.878670] RIP: 0033:0x4477ca [ 35.881838] RSP: 002b:00007fff69213888 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5 [ 35.889526] RAX: ffffffffffffffda RBX: 0000000020000b70 RCX: 00000000004477ca [ 35.896773] RDX: 0000000020000000 RSI: 0000000020000100 RDI: 00007fff692138c0 [ 35.904020] RBP: 0000000000000064 R08: 0000000020016600 R09: 000000000000000a [ 35.911267] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000064 [ 35.918515] R13: 0000000000000003 R14: 0000000000000000 R15: 0000000000000000 [ 35.925777] [ 35.927381] Allocated by task 2845: [ 35.930996] save_stack+0x43/0xd0 [ 35.934428] kasan_kmalloc+0xc4/0xe0 [ 35.938119] kasan_slab_alloc+0x12/0x20 [ 35.942077] kmem_cache_alloc+0x12e/0x760 [ 35.946201] getname_flags+0xd0/0x5a0 [ 35.949980] getname+0x19/0x20 [ 35.953150] do_sys_open+0x39a/0x740 [ 35.956839] __x64_sys_open+0x7e/0xc0 [ 35.960617] do_syscall_64+0x1b1/0x800 [ 35.964481] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 35.969649] [ 35.971252] Freed by task 2845: [ 35.974510] save_stack+0x43/0xd0 [ 35.977939] __kasan_slab_free+0x11a/0x170 [ 35.982150] kasan_slab_free+0xe/0x10 [ 35.985926] kmem_cache_free+0x86/0x2d0 [ 35.989876] putname+0xf2/0x130 [ 35.993134] do_sys_open+0x554/0x740 [ 35.996828] __x64_sys_open+0x7e/0xc0 [ 36.000607] do_syscall_64+0x1b1/0x800 [ 36.004472] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 36.009636] [ 36.011244] The buggy address belongs to the object at ffff8801ac7b69c0 [ 36.011244] which belongs to the cache names_cache of size 4096 [ 36.023969] The buggy address is located 736 bytes to the left of [ 36.023969] 4096-byte region [ffff8801ac7b69c0, ffff8801ac7b79c0) [ 36.036340] The buggy address belongs to the page: [ 36.041249] page:ffffea0006b1ed80 count:1 mapcount:0 mapping:ffff8801ac7b69c0 index:0x0 compound_mapcount: 0 [ 36.051198] flags: 0x2fffc0000008100(slab|head) [ 36.055845] raw: 02fffc0000008100 ffff8801ac7b69c0 0000000000000000 0000000100000001 [ 36.063706] raw: ffffea0006b1f7a0 ffffea0006b1eea0 ffff8801da988dc0 0000000000000000 [ 36.071566] page dumped because: kasan: bad access detected [ 36.077248] [ 36.078855] Memory state around the buggy address: [ 36.083762] ffff8801ac7b6580: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 36.091099] ffff8801ac7b6600: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 36.098434] >ffff8801ac7b6680: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 36.105772] ^ [ 36.112244] ffff8801ac7b6700: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 36.119598] ffff8801ac7b6780: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 36.126946] ================================================================== [ 36.134280] Disabling lock debugging due to kernel taint [ 36.139843] Kernel panic - not syncing: panic_on_warn set ... [ 36.139843] [ 36.147198] CPU: 0 PID: 4519 Comm: syzkaller806281 Tainted: G B 4.17.0-rc1+ #8 [ 36.155834] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 36.165163] Call Trace: [ 36.167730] dump_stack+0x1b9/0x294 [ 36.171338] ? dump_stack_print_info.cold.2+0x52/0x52 [ 36.176506] ? trace_hardirqs_on_thunk+0x1a/0x1c [ 36.181241] ? build_segment_manager+0xb870/0xbf70 [ 36.186150] panic+0x22f/0x4de [ 36.189320] ? add_taint.cold.5+0x16/0x16 [ 36.193447] ? do_raw_spin_unlock+0x9e/0x2e0 [ 36.197830] ? do_raw_spin_unlock+0x9e/0x2e0 [ 36.202214] ? build_segment_manager+0xb92d/0xbf70 [ 36.207130] kasan_end_report+0x47/0x4f [ 36.211079] kasan_report.cold.7+0x76/0x2fe [ 36.215378] __asan_report_load4_noabort+0x14/0x20 [ 36.220281] build_segment_manager+0xb92d/0xbf70 [ 36.225016] ? flush_sit_entries+0x2c40/0x2c40 [ 36.229573] ? vprintk_emit+0x3e5/0xdd0 [ 36.233524] ? console_unlock+0x1100/0x1100 [ 36.237820] ? lock_downgrade+0x8e0/0x8e0 [ 36.241943] ? mark_held_locks+0xc9/0x160 [ 36.246067] ? do_raw_spin_trylock+0x1b0/0x1b0 [ 36.250626] ? vprintk_default+0x28/0x30 [ 36.254664] ? vprintk_func+0x81/0xe7 [ 36.258440] ? printk+0x9e/0xba [ 36.261697] ? kmsg_dump_rewind_nolock+0xe4/0xe4 [ 36.266434] ? __sanitizer_cov_trace_const_cmp8+0x18/0x20 [ 36.271948] ? f2fs_msg+0x11e/0x170 [ 36.275550] ? f2fs_quota_read+0x1030/0x1030 [ 36.279933] ? crc32_pclmul_le+0x49/0x120 [ 36.284060] ? __asan_allocas_unpoison+0x16/0x20 [ 36.288801] ? crypto_shash_update+0x10b/0x2a0 [ 36.293359] ? get_checkpoint_version+0x351/0x5d0 [ 36.298177] ? __sanitizer_cov_trace_const_cmp1+0x1a/0x20 [ 36.303690] ? unlock_page+0x1d0/0x2b0 [ 36.307554] ? wake_up_page_bit+0x580/0x580 [ 36.311853] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 36.317367] ? bpf_prog_kallsyms_find+0xd6/0x4a0 [ 36.322096] ? modules_open+0xa0/0xa0 [ 36.325871] ? __bpf_trace_bpf_map_next_key+0x40/0x40 [ 36.331037] ? lock_downgrade+0x8e0/0x8e0 [ 36.335161] ? noop_count+0x40/0x40 [ 36.338765] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 36.344278] ? bpf_prog_kallsyms_find+0xd6/0x4a0 [ 36.349006] ? modules_open+0xa0/0xa0 [ 36.352783] ? __bpf_trace_bpf_map_next_key+0x40/0x40 [ 36.357950] ? kernel_text_address+0x79/0xf0 [ 36.362332] ? is_bpf_text_address+0xae/0x170 [ 36.366802] ? lock_downgrade+0x8e0/0x8e0 [ 36.370923] ? lock_release+0xa10/0xa10 [ 36.374873] ? kasan_check_read+0x11/0x20 [ 36.378997] ? rcu_is_watching+0x85/0x140 [ 36.383131] ? rcu_bh_force_quiescent_state+0x20/0x20 [ 36.388296] ? is_bpf_text_address+0xd7/0x170 [ 36.392766] ? kernel_text_address+0x79/0xf0 [ 36.397152] ? __unwind_start+0x166/0x330 [ 36.401277] ? __kernel_text_address+0xd/0x40 [ 36.405747] ? unwind_get_return_address+0x61/0xa0 [ 36.410652] ? __save_stack_trace+0x7e/0xd0 [ 36.414951] ? add_lock_to_list.isra.29+0x1e4/0x490 [ 36.419942] ? trace_hardirqs_off+0x10/0x10 [ 36.424244] ? save_stack_trace+0x1a/0x20 [ 36.428367] ? save_trace+0xe0/0x290 [ 36.432056] ? kasan_check_read+0x11/0x20 [ 36.436180] ? __lock_acquire+0x28fb/0x5140 [ 36.440481] ? debug_check_no_locks_freed+0x310/0x310 [ 36.445648] ? do_raw_spin_trylock+0x1b0/0x1b0 [ 36.450208] ? kasan_check_read+0x11/0x20 [ 36.454336] ? mark_held_locks+0xc9/0x160 [ 36.458459] ? print_usage_bug+0xc0/0xc0 [ 36.462496] ? trace_hardirqs_on_caller+0x421/0x5c0 [ 36.467486] ? __lockdep_init_map+0x105/0x590 [ 36.471958] ? lockdep_init_map+0x9/0x10 [ 36.475995] ? __mutex_init+0x1ef/0x280 [ 36.479945] ? print_usage_bug+0xc0/0xc0 [ 36.483983] ? mark_held_locks+0xc9/0x160 [ 36.488107] ? __raw_spin_lock_init+0x1c/0x100 [ 36.492664] ? trace_hardirqs_on_caller+0x421/0x5c0 [ 36.497656] ? __lockdep_init_map+0x105/0x590 [ 36.502127] ? lockdep_init_map+0x9/0x10 [ 36.506164] ? mark_held_locks+0xc9/0x160 [ 36.510290] ? f2fs_update_extent_cache_range+0x1d0/0x1d0 [ 36.516214] ? __raw_spin_lock_init+0x1c/0x100 [ 36.520784] ? __lockdep_init_map+0x105/0x590 [ 36.525253] ? lockdep_init_map+0x9/0x10 [ 36.529290] ? __raw_spin_lock_init+0x2d/0x100 [ 36.533852] f2fs_fill_super+0x4095/0x7bf0 [ 36.538079] ? f2fs_commit_super+0x400/0x400 [ 36.542463] ? lock_downgrade+0x8e0/0x8e0 [ 36.546587] ? lock_release+0xa10/0xa10 [ 36.550538] ? check_same_owner+0x320/0x320 [ 36.554838] ? __sanitizer_cov_trace_cmp4+0x16/0x20 [ 36.559832] ? widen_string+0xd8/0x2d0 [ 36.563697] ? rcu_note_context_switch+0x710/0x710 [ 36.568602] ? format_decode+0xae0/0xae0 [ 36.572637] ? graph_lock+0x170/0x170 [ 36.576416] ? widen_string+0x2d0/0x2d0 [ 36.580368] ? sget_userns+0x2dd/0xf20 [ 36.584317] ? find_held_lock+0x13f/0x1c0 [ 36.588443] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 36.593955] ? bdev_name.isra.7+0x1a1/0x1f0 [ 36.598261] ? pointer+0x1b0/0xa20 [ 36.601777] ? netdev_bits+0xb0/0xb0 [ 36.605464] ? format_decode+0x1a9/0xae0 [ 36.609502] ? set_precision+0xe0/0xe0 [ 36.613368] ? __sanitizer_cov_trace_switch+0x53/0x90 [ 36.618535] ? __sanitizer_cov_trace_const_cmp8+0x18/0x20 [ 36.624048] ? vsnprintf+0x242/0x1b40 [ 36.627835] ? pointer+0xa20/0xa20 [ 36.631352] ? snprintf+0xa5/0xd0 [ 36.634785] ? vsprintf+0x40/0x40 [ 36.638224] ? __sanitizer_cov_trace_cmp4+0x16/0x20 [ 36.643218] ? set_blocksize+0x2c4/0x350 [ 36.647261] mount_bdev+0x30c/0x3e0 [ 36.650863] ? f2fs_commit_super+0x400/0x400 [ 36.655247] ? mount_bdev+0x30c/0x3e0 [ 36.659026] ? f2fs_commit_super+0x400/0x400 [ 36.663417] f2fs_mount+0x34/0x40 [ 36.666847] mount_fs+0xae/0x328 [ 36.670192] vfs_kern_mount.part.34+0xd4/0x4d0 [ 36.674753] ? may_umount+0xb0/0xb0 [ 36.678366] ? _raw_read_unlock+0x22/0x30 [ 36.682490] ? __get_fs_type+0x97/0xc0 [ 36.686357] do_mount+0x564/0x3070 [ 36.689877] ? copy_mount_string+0x40/0x40 [ 36.694093] ? rcu_pm_notify+0xc0/0xc0 [ 36.697962] ? copy_mount_options+0x5f/0x380 [ 36.702346] ? rcu_read_lock_sched_held+0x108/0x120 [ 36.707340] ? kmem_cache_alloc_trace+0x616/0x780 [ 36.712175] ? __sanitizer_cov_trace_const_cmp8+0x18/0x20 [ 36.717689] ? _copy_from_user+0xdf/0x150 [ 36.721815] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 36.727328] ? copy_mount_options+0x285/0x380 [ 36.731801] ksys_mount+0x12d/0x140 [ 36.735403] __x64_sys_mount+0xbe/0x150 [ 36.739351] ? trace_hardirqs_on_caller+0x421/0x5c0 [ 36.744345] do_syscall_64+0x1b1/0x800 [ 36.748208] ? syscall_slow_exit_work+0x4f0/0x4f0 [ 36.753121] ? syscall_return_slowpath+0x5c0/0x5c0 [ 36.758028] ? syscall_return_slowpath+0x30f/0x5c0 [ 36.762935] ? entry_SYSCALL_64_after_hwframe+0x59/0xbe [ 36.768274] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 36.773093] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 36.778256] RIP: 0033:0x4477ca [ 36.781420] RSP: 002b:00007fff69213888 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5 [ 36.789104] RAX: ffffffffffffffda RBX: 0000000020000b70 RCX: 00000000004477ca [ 36.796359] RDX: 0000000020000000 RSI: 0000000020000100 RDI: 00007fff692138c0 [ 36.803605] RBP: 0000000000000064 R08: 0000000020016600 R09: 000000000000000a [ 36.810850] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000064 [ 36.818094] R13: 0000000000000003 R14: 0000000000000000 R15: 0000000000000000 [ 36.825704] Dumping ftrace buffer: [ 36.829221] (ftrace buffer empty) [ 36.832904] Kernel Offset: disabled [ 36.836505] Rebooting in 86400 seconds..