Warning: Permanently added '10.128.0.18' (ECDSA) to the list of known hosts. executing program syzkaller login: [ 895.083731] BTRFS: device fsid 24c7a497-3402-47dd-bef8-82358f5f30e0 devid 1 transid 8 /dev/loop0 [ 895.100000] BTRFS info (device loop0): using free space tree [ 895.106215] BTRFS info (device loop0): has skinny extents [ 895.144160] FAULT_INJECTION: forcing a failure. [ 895.144160] name failslab, interval 1, probability 0, space 0, times 1 [ 895.156200] CPU: 1 PID: 8114 Comm: syz-executor173 Not tainted 4.19.211-syzkaller #0 [ 895.164094] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/26/2022 [ 895.173449] Call Trace: [ 895.176044] dump_stack+0x1fc/0x2ef [ 895.179674] should_fail.cold+0xa/0xf [ 895.183463] ? __btrfs_set_acl+0x208/0x340 [ 895.187684] ? setup_fault_attr+0x200/0x200 [ 895.191986] ? __vfs_setxattr+0x10e/0x170 [ 895.196122] ? __vfs_setxattr_noperm+0x11a/0x420 [ 895.200866] ? __vfs_setxattr_locked+0x176/0x250 [ 895.205609] __should_failslab+0x115/0x180 [ 895.209827] should_failslab+0x5/0x10 [ 895.213608] kmem_cache_alloc+0x277/0x370 [ 895.217738] btrfs_add_delayed_tree_ref+0xfe/0xb40 [ 895.222653] ? check_preemption_disabled+0x41/0x280 [ 895.228088] ? btrfs_select_ref_head+0x3a0/0x3a0 [ 895.232827] ? btrfs_alloc_tree_block+0xfbe/0x15f0 [ 895.237742] btrfs_alloc_tree_block+0x1124/0x15f0 [ 895.242570] ? btrfs_reserve_extent+0x440/0x440 [ 895.247237] ? deref_stack_reg+0x134/0x1d0 [ 895.251454] ? __read_once_size_nocheck.constprop.0+0x10/0x10 [ 895.257322] ? mark_held_locks+0xf0/0xf0 [ 895.261368] alloc_tree_block_no_bg_flush+0x1b6/0x250 [ 895.266541] __btrfs_cow_block+0x3c7/0x10a0 [ 895.270855] ? update_ref_for_cow+0xaf0/0xaf0 [ 895.275337] ? btrfs_tree_read_unlock_blocking+0x290/0x290 [ 895.280963] btrfs_cow_block+0x276/0x840 [ 895.285024] btrfs_search_slot+0x66a/0x1ee0 [ 895.289407] ? split_leaf+0x1240/0x1240 [ 895.293386] ? _raw_spin_unlock_irqrestore+0x66/0xe0 [ 895.298479] ? depot_save_stack+0x258/0x410 [ 895.302789] ? crc32c_pcl_intel_update+0x1b9/0x320 [ 895.307710] btrfs_insert_empty_items+0xba/0x180 [ 895.312453] insert_with_overflow+0xba/0x270 [ 895.316844] ? btrfs_match_dir_item_name+0x1e0/0x1e0 [ 895.322055] ? crc32c+0x2e/0x1f0 [ 895.325405] btrfs_insert_xattr_item+0x188/0x3c0 [ 895.330147] ? insert_with_overflow+0x270/0x270 [ 895.334889] ? should_fail+0x142/0x7b0 [ 895.338760] ? setup_fault_attr+0x200/0x200 [ 895.343066] ? __mutex_unlock_slowpath+0xea/0x610 [ 895.347892] ? check_preemption_disabled+0x41/0x280 [ 895.352894] ? do_setxattr+0x10b/0x980 [ 895.356765] ? rcu_read_lock_sched_held+0x16c/0x1d0 [ 895.361763] do_setxattr+0x2e5/0x980 [ 895.365464] btrfs_setxattr+0x12f/0x2a0 [ 895.369428] __btrfs_set_acl+0x208/0x340 [ 895.373471] btrfs_set_acl+0xef/0x180 [ 895.377252] ? btrfs_get_acl+0x180/0x180 [ 895.381292] ? posix_acl_alloc+0x20/0xb0 [ 895.385334] ? posix_acl_valid+0x15d/0x300 [ 895.389552] set_posix_acl+0x220/0x2d0 [ 895.393422] ? set_posix_acl+0x2d0/0x2d0 [ 895.397466] posix_acl_xattr_set+0x90/0x140 [ 895.401873] __vfs_setxattr+0x10e/0x170 [ 895.405834] ? xattr_resolve_name+0x3d0/0x3d0 [ 895.410320] ? evm_protect_xattr.constprop.0+0x99/0x3d0 [ 895.415665] __vfs_setxattr_noperm+0x11a/0x420 [ 895.420229] __vfs_setxattr_locked+0x176/0x250 [ 895.424794] vfs_setxattr+0xe5/0x270 [ 895.428492] ? __vfs_setxattr_locked+0x250/0x250 [ 895.433230] ? __might_fault+0x192/0x1d0 [ 895.437276] setxattr+0x23d/0x330 [ 895.440711] ? vfs_setxattr+0x270/0x270 [ 895.444690] ? filename_lookup+0x3d5/0x5a0 [ 895.448910] ? lock_acquire+0x170/0x3c0 [ 895.452865] ? __phys_addr_symbol+0x2c/0x70 [ 895.457175] ? __check_object_size+0x17b/0x3e0 [ 895.461740] ? check_preemption_disabled+0x41/0x280 [ 895.466741] ? preempt_count_add+0xaf/0x190 [ 895.471045] ? __mnt_want_write+0x22c/0x2c0 [ 895.475355] path_setxattr+0x170/0x190 [ 895.479225] ? __se_sys_fsetxattr+0x1b0/0x1b0 [ 895.483699] ? ksys_write+0x1c8/0x2a0 [ 895.487482] ? entry_SYSCALL_64_after_hwframe+0x3e/0xbe [ 895.492829] __x64_sys_lsetxattr+0xbd/0x150 [ 895.497134] ? lockdep_hardirqs_on+0x3a8/0x5c0 [ 895.501695] do_syscall_64+0xf9/0x620 [ 895.505590] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 895.510764] RIP: 0033:0x7efc9fcebd29 [ 895.514460] Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 e1 14 00 00 90 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 c0 ff ff ff f7 d8 64 89 01 48 [ 895.533347] RSP: 002b:00007ffe1a3888d8 EFLAGS: 00000246 ORIG_RAX: 00000000000000bd executing program [ 895.541036] RAX: ffffffffffffffda RBX: 00007ffe1a388938 RCX: 00007efc9fcebd29 [ 895.548558] RDX: 0000000020000500 RSI: 00000000200000c0 RDI: 0000000020000040 [ 895.555828] RBP: 00007ffe1a3888e0 R08: 0000000000000000 R09: 0000000000003531 [ 895.563086] R10: 0000000000000024 R11: 0000000000000246 R12: 0000000000000002 [ 895.570342] R13: 0000000000000000 R14: 431bde82d7b634db R15: 0000000000000000 executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program [ 1147.821312] INFO: task kworker/u4:3:236 blocked for more than 140 seconds. [ 1147.828555] Not tainted 4.19.211-syzkaller #0 [ 1147.833962] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. [ 1147.842057] kworker/u4:3 D25184 236 2 0x80000000 [ 1147.847765] Workqueue: events_unbound btrfs_async_reclaim_metadata_space [ 1147.854736] Call Trace: [ 1147.857383] __schedule+0x887/0x2040 [ 1147.861153] ? io_schedule_timeout+0x140/0x140 [ 1147.865837] ? prepare_to_wait_exclusive+0x2d0/0x2d0 [ 1147.870988] schedule+0x8d/0x1b0 [ 1147.874464] wait_current_trans+0x2e2/0x390 [ 1147.878833] ? btrfs_put_transaction+0x540/0x540 [ 1147.883704] ? wait_woken+0x250/0x250 [ 1147.887568] ? _raw_spin_unlock+0x29/0x40 [ 1147.891926] ? join_transaction+0x1b7/0xe20 [ 1147.896326] start_transaction+0x699/0xf90 [ 1147.900639] flush_space+0x9af/0xee0 [ 1147.904495] ? debug_object_deactivate+0x1f9/0x2e0 [ 1147.909557] ? __find_space_info+0x162/0x2f0 [ 1147.914255] ? btrfs_async_reclaim_metadata_space+0x41a/0x1050 [ 1147.920281] ? btrfs_setup_space_cache+0x250/0x250 [ 1147.925331] ? lock_downgrade+0x720/0x720 [ 1147.929543] ? lock_acquire+0x170/0x3c0 [ 1147.933619] ? btrfs_async_reclaim_metadata_space+0x3a/0x1050 [ 1147.939567] btrfs_async_reclaim_metadata_space+0x466/0x1050 [ 1147.945474] process_one_work+0x864/0x1570 [ 1147.949760] ? pwq_dec_nr_in_flight+0x2d0/0x2d0 [ 1147.954541] worker_thread+0x64c/0x1130 [ 1147.958569] ? __kthread_parkme+0x133/0x1e0 [ 1147.963009] ? process_one_work+0x1570/0x1570 [ 1147.967571] kthread+0x33f/0x460 [ 1147.970968] ? kthread_park+0x180/0x180 [ 1147.975047] ret_from_fork+0x24/0x30 [ 1147.978900] INFO: task btrfs-transacti:8142 blocked for more than 140 seconds. [ 1147.986409] Not tainted 4.19.211-syzkaller #0 [ 1147.991521] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. [ 1147.999514] btrfs-transacti D27184 8142 2 0x80000000 [ 1148.005218] Call Trace: [ 1148.007859] __schedule+0x887/0x2040 [ 1148.011664] ? io_schedule_timeout+0x140/0x140 [ 1148.016285] ? prepare_to_wait_exclusive+0x2d0/0x2d0 [ 1148.021465] schedule+0x8d/0x1b0 [ 1148.024893] btrfs_tree_lock+0x4fe/0x810 [ 1148.028986] ? btrfs_tree_read_unlock_blocking+0x290/0x290 [ 1148.034723] ? btrfs_dec_block_group_reservations+0x7c/0xb0 [ 1148.040490] ? wait_woken+0x250/0x250 [ 1148.044397] btrfs_alloc_tree_block+0x9b1/0x15f0 [ 1148.049211] ? btrfs_reserve_extent+0x440/0x440 [ 1148.053974] ? depot_save_stack+0x258/0x410 [ 1148.058343] ? mark_held_locks+0xf0/0xf0 [ 1148.062541] alloc_tree_block_no_bg_flush+0x1b6/0x250 [ 1148.067773] __btrfs_cow_block+0x3c7/0x10a0 [ 1148.072192] ? update_ref_for_cow+0xaf0/0xaf0 [ 1148.076733] ? btrfs_tree_read_unlock_blocking+0x290/0x290 [ 1148.082452] btrfs_cow_block+0x276/0x840 [ 1148.086558] btrfs_search_slot+0x66a/0x1ee0 [ 1148.090908] ? __btrfs_run_delayed_refs+0x2af6/0x3de0 [ 1148.096197] ? split_leaf+0x1240/0x1240 [ 1148.100210] ? rcu_read_lock_sched_held+0x16c/0x1d0 [ 1148.105314] btrfs_update_root+0xc9/0x6b0 [ 1148.109502] ? btrfs_init_free_ino_ctl+0x330/0x330 [ 1148.114528] ? btrfs_set_root_node+0x240/0x240 [ 1148.119152] ? radix_tree_tag_clear+0x193/0x2f0 [ 1148.123907] commit_fs_roots+0x3b5/0x530 [ 1148.128011] ? btrfs_commit_transaction+0x8c2/0x2480 [ 1148.133199] ? mutex_trylock+0x1a0/0x1a0 [ 1148.137304] ? btrfs_trans_release_metadata+0x480/0x480 [ 1148.143219] ? lock_acquire+0x170/0x3c0 [ 1148.147249] ? btrfs_first_delayed_node+0x18/0x80 [ 1148.152181] ? do_raw_spin_unlock+0x171/0x230 [ 1148.156717] ? _raw_spin_unlock+0x29/0x40 [ 1148.160881] btrfs_commit_transaction+0x8ca/0x2480 [ 1148.165896] ? _raw_spin_unlock+0x29/0x40 [ 1148.170083] ? btrfs_apply_pending_changes+0x150/0x150 [ 1148.175460] ? btrfs_record_root_in_trans+0x13c/0x190 [ 1148.180703] ? start_transaction+0x239/0xf90 [ 1148.185201] transaction_kthread+0x385/0x490 [ 1148.189650] ? open_ctree+0x61e0/0x61e0 [ 1148.193717] kthread+0x33f/0x460 [ 1148.197117] ? kthread_park+0x180/0x180 [ 1148.201106] ret_from_fork+0x24/0x30 [ 1148.204915] [ 1148.204915] Showing all locks held in the system: [ 1148.211334] 3 locks held by kworker/u4:3/236: [ 1148.215821] #0: 0000000068530e04 ((wq_completion)"events_unbound"){+.+.}, at: process_one_work+0x767/0x1570 [ 1148.225845] #1: 00000000f28d9113 ((work_completion)(work)#2){+.+.}, at: process_one_work+0x79c/0x1570 [ 1148.235376] #2: 00000000d3b92991 (sb_internal#2){.+.+}, at: start_transaction+0xa37/0xf90 [ 1148.243878] 1 lock held by khungtaskd/1571: [ 1148.248190] #0: 0000000075c5e21b (rcu_read_lock){....}, at: debug_show_all_locks+0x53/0x265 [ 1148.256891] 3 locks held by btrfs-transacti/8142: [ 1148.261784] #0: 0000000023e43385 (&fs_info->transaction_kthread_mutex){+.+.}, at: transaction_kthread+0xfa/0x490 [ 1148.272267] #1: 0000000035a27424 (&fs_info->reloc_mutex){+.+.}, at: btrfs_commit_transaction+0x80b/0x2480 [ 1148.282129] #2: 000000000ba074f5 (&fs_info->tree_log_mutex){+.+.}, at: btrfs_commit_transaction+0x8c2/0x2480 [ 1148.292264] 2 locks held by syz-executor173/9785: [ 1148.297099] #0: 0000000067397c7b (sb_writers#12){.+.+}, at: mnt_want_write+0x3a/0xb0 [ 1148.305131] #1: 00000000eb40410f (&type->i_mutex_dir_key#7){++++}, at: vfs_setxattr+0xc7/0x270 [ 1148.314068] [ 1148.315689] ============================================= [ 1148.315689] [ 1148.322788] NMI backtrace for cpu 0 [ 1148.326419] CPU: 0 PID: 1571 Comm: khungtaskd Not tainted 4.19.211-syzkaller #0 [ 1148.333848] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/26/2022 [ 1148.343183] Call Trace: [ 1148.345764] dump_stack+0x1fc/0x2ef [ 1148.349377] nmi_cpu_backtrace.cold+0x63/0xa2 [ 1148.353857] ? lapic_can_unplug_cpu+0x80/0x80 [ 1148.358334] nmi_trigger_cpumask_backtrace+0x1a6/0x1f0 [ 1148.363596] watchdog+0x991/0xe60 [ 1148.367037] ? reset_hung_task_detector+0x30/0x30 [ 1148.371863] kthread+0x33f/0x460 [ 1148.375212] ? kthread_park+0x180/0x180 [ 1148.379167] ret_from_fork+0x24/0x30 [ 1148.382964] Sending NMI from CPU 0 to CPUs 1: [ 1148.388027] NMI backtrace for cpu 1 [ 1148.388033] CPU: 1 PID: 4682 Comm: systemd-journal Not tainted 4.19.211-syzkaller #0 [ 1148.388039] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/26/2022 [ 1148.388043] RIP: 0010:unwind_next_frame+0x285/0x1400 [ 1148.388054] Code: 48 89 54 24 30 48 89 74 24 28 44 89 5c 24 20 e8 71 de 6e 00 48 8b 54 24 30 48 8b 74 24 28 44 8b 5c 24 20 8b 0c 95 bc 91 17 8c <8d> 56 01 48 b8 00 00 00 00 00 fc ff df 48 8d 3c 95 bc 91 17 8c 49 [ 1148.388058] RSP: 0018:ffff8880a15479a8 EFLAGS: 00000246 [ 1148.388066] RAX: 0000000000000007 RBX: 1ffff110142a8f3e RCX: 0000000000022d60 [ 1148.388071] RDX: 0000000000009854 RSI: 0000000000009854 RDI: ffffffff8c19f30c [ 1148.388076] RBP: 0000000000000001 R08: 0000000000000001 R09: 0000000000000001 [ 1148.388081] R10: ffff8880a1547b37 R11: 0000000000074071 R12: ffff8880a1547b20 [ 1148.388086] R13: ffff8880a1547b0d R14: ffff8880a1547ad8 R15: ffffffff8198548a [ 1148.388091] FS: 00007fdff69d78c0(0000) GS:ffff8880ba100000(0000) knlGS:0000000000000000 [ 1148.388096] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 1148.388101] CR2: 00007fdff3db7000 CR3: 00000000a323c000 CR4: 00000000003406e0 [ 1148.388106] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 1148.388111] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 1148.388113] Call Trace: [ 1148.388117] ? kasan_kmalloc+0xeb/0x160 [ 1148.388120] ? deref_stack_reg+0x1d0/0x1d0 [ 1148.388124] ? __unwind_start+0x5b8/0x960 [ 1148.388127] ? unwind_next_frame+0x1400/0x1400 [ 1148.388131] ? is_bpf_text_address+0xfc/0x1b0 [ 1148.388135] ? kernel_text_address+0xbd/0xf0 [ 1148.388138] ? kasan_kmalloc+0xeb/0x160 [ 1148.388142] __save_stack_trace+0xd6/0x190 [ 1148.388145] ? __lock_acquire+0x6de/0x3ff0 [ 1148.388149] ? kasan_kmalloc+0xeb/0x160 [ 1148.388152] kasan_kmalloc+0xeb/0x160 [ 1148.388155] ? kmem_cache_alloc+0x110/0x370 [ 1148.388159] ? getname_flags+0xce/0x590 [ 1148.388162] ? user_path_at_empty+0x2a/0x50 [ 1148.388166] ? do_faccessat+0x248/0x7a0 [ 1148.388169] ? do_syscall_64+0xf9/0x620 [ 1148.388173] ? entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 1148.388177] ? kmem_cache_alloc+0x122/0x370 [ 1148.388180] ? prepare_creds+0x39/0x510 [ 1148.388184] ? do_faccessat+0x94/0x7a0 [ 1148.388187] ? mark_held_locks+0xf0/0xf0 [ 1148.388191] ? cache_alloc_refill+0x2f8/0x340 [ 1148.388194] ? lock_downgrade+0x720/0x720 [ 1148.388197] ? do_raw_spin_lock+0xcb/0x220 [ 1148.388201] ? do_raw_spin_unlock+0x171/0x230 [ 1148.388205] ? _raw_spin_unlock+0x29/0x40 [ 1148.388208] ? cache_alloc_refill+0x2f8/0x340 [ 1148.388212] ? kmem_cache_alloc+0x2b1/0x370 [ 1148.388215] kmem_cache_alloc+0x122/0x370 [ 1148.388219] getname_flags+0xce/0x590 [ 1148.388222] user_path_at_empty+0x2a/0x50 [ 1148.388225] do_faccessat+0x248/0x7a0 [ 1148.388229] ? __ia32_sys_fallocate+0x140/0x140 [ 1148.388233] ? entry_SYSCALL_64_after_hwframe+0x3e/0xbe [ 1148.388237] ? trace_hardirqs_off_caller+0x6e/0x210 [ 1148.388240] ? do_syscall_64+0x21/0x620 [ 1148.388243] do_syscall_64+0xf9/0x620 [ 1148.388252] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 1148.388256] RIP: 0033:0x7fdff5c929c7 [ 1148.388266] Code: 83 c4 08 48 3d 01 f0 ff ff 73 01 c3 48 8b 0d c8 d4 2b 00 f7 d8 64 89 01 48 83 c8 ff c3 66 0f 1f 44 00 00 b8 15 00 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 8b 0d a1 d4 2b 00 f7 d8 64 89 01 48 [ 1148.388270] RSP: 002b:00007ffd64aac6e8 EFLAGS: 00000246 ORIG_RAX: 0000000000000015 [ 1148.388278] RAX: ffffffffffffffda RBX: 00007ffd64aaf600 RCX: 00007fdff5c929c7 [ 1148.388283] RDX: 00007fdff6703a00 RSI: 0000000000000000 RDI: 0000563f6695b9a3 [ 1148.388288] RBP: 00007ffd64aac720 R08: 0000000000000000 R09: 0000000000000000 [ 1148.388293] R10: 0000000000000069 R11: 0000000000000246 R12: 0000000000000000 [ 1148.388298] R13: 0000000000000000 R14: 00007ffd64aaf600 R15: 00007ffd64aacc10 [ 1148.388466] Kernel panic - not syncing: hung_task: blocked tasks [ 1148.747512] CPU: 0 PID: 1571 Comm: khungtaskd Not tainted 4.19.211-syzkaller #0 [ 1148.754936] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/26/2022 [ 1148.764283] Call Trace: [ 1148.766858] dump_stack+0x1fc/0x2ef [ 1148.770473] panic+0x26a/0x50e [ 1148.773654] ? __warn_printk+0xf3/0xf3 [ 1148.777523] ? _raw_spin_unlock_irqrestore+0x79/0xe0 [ 1148.782704] ? cpumask_next+0x3c/0x40 [ 1148.786587] ? printk_safe_flush+0xd6/0x120 [ 1148.790909] ? watchdog+0x991/0xe60 [ 1148.794610] ? nmi_trigger_cpumask_backtrace+0x15e/0x1f0 [ 1148.800049] watchdog+0x9a2/0xe60 [ 1148.803576] ? reset_hung_task_detector+0x30/0x30 [ 1148.808426] kthread+0x33f/0x460 [ 1148.811776] ? kthread_park+0x180/0x180 [ 1148.815748] ret_from_fork+0x24/0x30 [ 1148.819757] Kernel Offset: disabled [ 1148.823378] Rebooting in 86400 seconds..