Warning: Permanently added '10.128.1.185' (ED25519) to the list of known hosts. [ 146.031694][ T5848] cgroup: Unknown subsys name 'net' [ 146.142686][ T5848] cgroup: Unknown subsys name 'cpuset' [ 146.152632][ T5848] cgroup: Unknown subsys name 'rlimit' Setting up swapspace version 1, size = 127995904 bytes [ 148.186572][ T5848] Adding 124996k swap on ./swap-file. Priority:0 extents:1 across:124996k [ 148.584086][ T389] wlan0: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 148.593819][ T389] wlan0: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 148.629082][ T389] wlan0: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 148.637048][ T389] wlan0: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 148.659500][ T36] wlan0: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 148.667354][ T36] wlan0: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 148.698139][ T389] wlan0: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 148.706013][ T389] wlan0: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 148.745249][ T3562] wlan1: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 148.753476][ T3562] wlan1: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 148.789037][ T389] wlan1: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 148.803792][ T389] wlan1: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 148.831487][ T5858] soft_limit_in_bytes is deprecated and will be removed. Please report your usecase to linux-mm@kvack.org if you depend on this functionality. [ 148.885741][ T389] wlan1: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 148.895170][ T389] wlan1: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 148.901930][ T36] wlan1: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 148.915341][ T36] wlan1: Creating new IBSS network, BSSID 50:50:50:50:50:50 executing program executing program [ 149.018506][ T5865] [ 149.020906][ T5865] ====================================================== [ 149.028036][ T5865] WARNING: possible circular locking dependency detected [ 149.035078][ T5865] 6.15.0-syzkaller-07774-g90b83efa6701 #0 Not tainted [ 149.041870][ T5865] ------------------------------------------------------ [ 149.048913][ T5865] syz-executor747/5865 is trying to acquire lock: [ 149.055337][ T5865] ffffffff8e52d3a8 (pcpu_alloc_mutex){+.+.}-{4:4}, at: pcpu_alloc_noprof+0xb4a/0x1470 [ 149.064965][ T5865] [ 149.064965][ T5865] but task is already holding lock: [ 149.072334][ T5865] ffff888142f5cee8 (&q->q_usage_counter(io)#58){++++}-{0:0}, at: blk_mq_freeze_queue_nomemsave+0x15/0x20 [ 149.083608][ T5865] [ 149.083608][ T5865] which lock already depends on the new lock. [ 149.083608][ T5865] [ 149.094021][ T5865] [ 149.094021][ T5865] the existing dependency chain (in reverse order) is: [ 149.103062][ T5865] [ 149.103062][ T5865] -> #2 (&q->q_usage_counter(io)#58){++++}-{0:0}: [ 149.111698][ T5865] blk_alloc_queue+0x619/0x760 [ 149.117001][ T5865] blk_mq_alloc_queue+0x175/0x290 [ 149.122572][ T5865] __blk_mq_alloc_disk+0x29/0x120 [ 149.128144][ T5865] nbd_dev_add+0x4a0/0xbc0 [ 149.133115][ T5865] nbd_init+0x181/0x320 [ 149.137918][ T5865] do_one_initcall+0x120/0x6e0 [ 149.143239][ T5865] kernel_init_freeable+0x5c2/0x900 [ 149.149003][ T5865] kernel_init+0x1c/0x2b0 [ 149.153903][ T5865] ret_from_fork+0x5d7/0x6f0 [ 149.159038][ T5865] ret_from_fork_asm+0x1a/0x30 [ 149.164342][ T5865] [ 149.164342][ T5865] -> #1 (fs_reclaim){+.+.}-{0:0}: [ 149.171576][ T5865] fs_reclaim_acquire+0x102/0x150 [ 149.177142][ T5865] prepare_alloc_pages+0x162/0x610 [ 149.182787][ T5865] __alloc_frozen_pages_noprof+0x18b/0x23f0 [ 149.189232][ T5865] __alloc_pages_noprof+0xb/0x1b0 [ 149.194796][ T5865] pcpu_populate_chunk+0x110/0xb00 [ 149.200443][ T5865] pcpu_alloc_noprof+0x86a/0x1470 [ 149.206006][ T5865] xt_percpu_counter_alloc+0x13e/0x1b0 [ 149.212010][ T5865] find_check_entry.constprop.0+0xbf/0xa20 [ 149.218357][ T5865] translate_table+0xd0b/0x17b0 [ 149.223742][ T5865] ip6t_register_table+0x102/0x430 [ 149.229394][ T5865] ip6table_security_table_init+0x40/0x60 [ 149.235651][ T5865] xt_find_table_lock+0x2e1/0x520 [ 149.241214][ T5865] xt_request_find_table_lock+0x28/0xf0 [ 149.247299][ T5865] get_info+0x190/0x620 [ 149.251991][ T5865] do_ip6t_get_ctl+0x169/0xa50 [ 149.257292][ T5865] nf_getsockopt+0x7c/0xe0 [ 149.262252][ T5865] ipv6_getsockopt+0x1f7/0x280 [ 149.267547][ T5865] tcp_getsockopt+0x9e/0x100 [ 149.272764][ T5865] do_sock_getsockopt+0x3ff/0x800 [ 149.278335][ T5865] __sys_getsockopt+0x123/0x1b0 [ 149.284074][ T5865] __x64_sys_getsockopt+0xbd/0x160 [ 149.289724][ T5865] do_syscall_64+0xcd/0x490 [ 149.294790][ T5865] entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 149.301236][ T5865] [ 149.301236][ T5865] -> #0 (pcpu_alloc_mutex){+.+.}-{4:4}: [ 149.308993][ T5865] __lock_acquire+0x126f/0x1c90 [ 149.314384][ T5865] lock_acquire+0x179/0x350 [ 149.319425][ T5865] __mutex_lock+0x199/0xb90 [ 149.324472][ T5865] pcpu_alloc_noprof+0xb4a/0x1470 [ 149.330036][ T5865] blk_stat_alloc_callback+0xc8/0x280 [ 149.335943][ T5865] wbt_init+0xac/0x540 [ 149.340611][ T5865] queue_wb_lat_store+0x354/0x3d0 [ 149.346174][ T5865] queue_attr_store+0x276/0x320 [ 149.351563][ T5865] sysfs_kf_write+0xef/0x150 [ 149.356690][ T5865] kernfs_fop_write_iter+0x354/0x510 [ 149.362525][ T5865] vfs_write+0x6c7/0x1150 [ 149.367416][ T5865] ksys_write+0x12a/0x250 [ 149.372300][ T5865] do_syscall_64+0xcd/0x490 [ 149.377351][ T5865] entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 149.383902][ T5865] [ 149.383902][ T5865] other info that might help us debug this: [ 149.383902][ T5865] [ 149.394151][ T5865] Chain exists of: [ 149.394151][ T5865] pcpu_alloc_mutex --> fs_reclaim --> &q->q_usage_counter(io)#58 [ 149.394151][ T5865] [ 149.408365][ T5865] Possible unsafe locking scenario: [ 149.408365][ T5865] [ 149.415826][ T5865] CPU0 CPU1 [ 149.421198][ T5865] ---- ---- [ 149.426831][ T5865] lock(&q->q_usage_counter(io)#58); [ 149.432230][ T5865] lock(fs_reclaim); [ 149.438745][ T5865] lock(&q->q_usage_counter(io)#58); [ 149.446671][ T5865] lock(pcpu_alloc_mutex); [ 149.451292][ T5865] [ 149.451292][ T5865] *** DEADLOCK *** [ 149.451292][ T5865] [ 149.459443][ T5865] 5 locks held by syz-executor747/5865: [ 149.464995][ T5865] #0: ffff888035a46428 (sb_writers#7){.+.+}-{0:0}, at: ksys_write+0x12a/0x250 [ 149.474006][ T5865] #1: ffff888032c40088 (&of->mutex){+.+.}-{4:4}, at: kernfs_fop_write_iter+0x28f/0x510 [ 149.483795][ T5865] #2: ffff888142bca3c8 (kn->active#57){.+.+}-{0:0}, at: kernfs_fop_write_iter+0x2b2/0x510 [ 149.493851][ T5865] #3: ffff888142f5cee8 (&q->q_usage_counter(io)#58){++++}-{0:0}, at: blk_mq_freeze_queue_nomemsave+0x15/0x20 [ 149.505564][ T5865] #4: ffff888142f5cf20 (&q->q_usage_counter(queue)#10){+.+.}-{0:0}, at: blk_mq_freeze_queue_nomemsave+0x15/0x20 [ 149.517526][ T5865] [ 149.517526][ T5865] stack backtrace: [ 149.523423][ T5865] CPU: 0 UID: 0 PID: 5865 Comm: syz-executor747 Not tainted 6.15.0-syzkaller-07774-g90b83efa6701 #0 PREEMPT(full) [ 149.523451][ T5865] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/07/2025 [ 149.523464][ T5865] Call Trace: [ 149.523472][ T5865] [ 149.523481][ T5865] dump_stack_lvl+0x116/0x1f0 [ 149.523510][ T5865] print_circular_bug+0x275/0x350 [ 149.523536][ T5865] check_noncircular+0x14c/0x170 [ 149.523562][ T5865] __lock_acquire+0x126f/0x1c90 [ 149.523591][ T5865] lock_acquire+0x179/0x350 [ 149.523614][ T5865] ? pcpu_alloc_noprof+0xb4a/0x1470 [ 149.523642][ T5865] ? __pfx___might_resched+0x10/0x10 [ 149.523661][ T5865] ? ksys_write+0x12a/0x250 [ 149.523684][ T5865] ? do_syscall_64+0xcd/0x490 [ 149.523712][ T5865] ? entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 149.523735][ T5865] __mutex_lock+0x199/0xb90 [ 149.523762][ T5865] ? pcpu_alloc_noprof+0xb4a/0x1470 [ 149.523790][ T5865] ? pcpu_alloc_noprof+0xb4a/0x1470 [ 149.523816][ T5865] ? __pfx___mutex_lock+0x10/0x10 [ 149.523851][ T5865] ? pcpu_alloc_noprof+0xb4a/0x1470 [ 149.523875][ T5865] pcpu_alloc_noprof+0xb4a/0x1470 [ 149.523905][ T5865] ? __pfx_wbt_data_dir+0x10/0x10 [ 149.523943][ T5865] ? __pfx_wb_timer_fn+0x10/0x10 [ 149.523965][ T5865] blk_stat_alloc_callback+0xc8/0x280 [ 149.523988][ T5865] ? kasan_save_track+0x14/0x30 [ 149.524016][ T5865] wbt_init+0xac/0x540 [ 149.524040][ T5865] queue_wb_lat_store+0x354/0x3d0 [ 149.524061][ T5865] ? __pfx_queue_wb_lat_store+0x10/0x10 [ 149.524082][ T5865] ? __mutex_trylock_common+0xe9/0x250 [ 149.524107][ T5865] ? __pfx_queue_wb_lat_store+0x10/0x10 [ 149.524127][ T5865] queue_attr_store+0x276/0x320 [ 149.524148][ T5865] ? __pfx_queue_attr_store+0x10/0x10 [ 149.524167][ T5865] ? __lock_acquire+0x622/0x1c90 [ 149.524196][ T5865] ? find_held_lock+0x2b/0x80 [ 149.524227][ T5865] ? sysfs_file_kobj+0xe4/0x290 [ 149.524249][ T5865] ? __pfx_queue_attr_store+0x10/0x10 [ 149.524269][ T5865] sysfs_kf_write+0xef/0x150 [ 149.524290][ T5865] kernfs_fop_write_iter+0x354/0x510 [ 149.524321][ T5865] ? __pfx_sysfs_kf_write+0x10/0x10 [ 149.524342][ T5865] vfs_write+0x6c7/0x1150 [ 149.524366][ T5865] ? __pfx_kernfs_fop_write_iter+0x10/0x10 [ 149.524399][ T5865] ? css_rstat_updated+0x9d/0xd30 [ 149.524431][ T5865] ? __pfx_vfs_write+0x10/0x10 [ 149.524456][ T5865] ? count_memcg_events_mm.constprop.0+0x138/0x340 [ 149.524491][ T5865] ? find_held_lock+0x2b/0x80 [ 149.524523][ T5865] ksys_write+0x12a/0x250 [ 149.524547][ T5865] ? __pfx_ksys_write+0x10/0x10 [ 149.524574][ T5865] do_syscall_64+0xcd/0x490 [ 149.524603][ T5865] entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 149.524624][ T5865] RIP: 0033:0x7f246eeccf59 [ 149.524641][ T5865] Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 c1 1f 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 b8 ff ff ff f7 d8 64 89 01 48 [ 149.524662][ T5865] RSP: 002b:00007ffc9a151c58 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 [ 149.524681][ T5865] RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 00007f246eeccf59 executing program executing program executing program executing program executing program [ 149.524695][ T5865] RDX: 0000000000000801 RSI: 0000200000000240 RDI: 0000000000000003 [ 149.524707][ T5865] RBP: 0000000000000000 R08: 0000000000000003 R09: 0000000000000003 [ 149.524720][ T5865] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000003 [ 149.524732][ T5865] R13: 00007ffc9a151ca0 R14: 00007ffc9a151ce0 R15: 0000000000000000 [ 149.524751][ T5865] executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program