no interfaces have a carrier forked to background, child pid 5501 [ 34.565856][ T5502] 8021q: adding VLAN 0 to HW filter on device bond0 [ 34.577781][ T5502] eql: remember to turn off Van-Jacobson compression on your slave devices Starting sshd: OK syzkaller syzkaller login: [ 76.681547][ T1550] cfg80211: failed to load regulatory.db Warning: Permanently added '10.128.10.0' (ED25519) to the list of known hosts. 2025/02/19 23:35:16 ignoring optional flag "sandboxArg"="0" 2025/02/19 23:35:18 parsed 1 programs [ 84.942827][ T5839] cgroup: Unknown subsys name 'net' [ 85.114709][ T5839] cgroup: Unknown subsys name 'cpuset' [ 85.122917][ T5839] cgroup: Unknown subsys name 'rlimit' [ 86.461968][ T5839] Adding 124996k swap on ./swap-file. Priority:0 extents:1 across:124996k [ 88.788279][ T5845] 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. [ 88.950080][ T3466] wlan0: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 88.958240][ T3466] wlan0: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 88.984749][ T3466] wlan1: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 88.992741][ T3466] wlan1: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 89.260074][ T1114] [ 89.262445][ T1114] ====================================================== [ 89.269456][ T1114] WARNING: possible circular locking dependency detected [ 89.276455][ T1114] 6.13.0-syzkaller-g8784714d7f27 #0 Not tainted [ 89.282670][ T1114] ------------------------------------------------------ [ 89.289665][ T1114] kworker/u8:5/1114 is trying to acquire lock: [ 89.295790][ T1114] ffffffff8fed6808 (rtnl_mutex){+.+.}-{4:4}, at: unregister_netdevice_many_notify+0xac2/0x2030 [ 89.306124][ T1114] [ 89.306124][ T1114] but task is already holding lock: [ 89.313467][ T1114] ffff888079ea8768 (&rdev->wiphy.mtx){+.+.}-{4:4}, at: ieee80211_remove_interfaces+0x129/0x700 [ 89.323808][ T1114] [ 89.323808][ T1114] which lock already depends on the new lock. [ 89.323808][ T1114] [ 89.334193][ T1114] [ 89.334193][ T1114] the existing dependency chain (in reverse order) is: [ 89.343187][ T1114] [ 89.343187][ T1114] -> #1 (&rdev->wiphy.mtx){+.+.}-{4:4}: [ 89.350907][ T1114] lock_acquire+0x1ed/0x550 [ 89.355921][ T1114] __mutex_lock+0x19c/0x1010 [ 89.361021][ T1114] wiphy_register+0x1913/0x2650 [ 89.366376][ T1114] ieee80211_register_hw+0x35d9/0x42e0 [ 89.372346][ T1114] mac80211_hwsim_new_radio+0x2ae8/0x4a40 [ 89.378575][ T1114] init_mac80211_hwsim+0x87a/0xb00 [ 89.384197][ T1114] do_one_initcall+0x248/0x930 [ 89.389468][ T1114] do_initcall_level+0x157/0x210 [ 89.394911][ T1114] do_initcalls+0x71/0xd0 [ 89.399745][ T1114] kernel_init_freeable+0x435/0x5d0 [ 89.405449][ T1114] kernel_init+0x1d/0x2b0 [ 89.410282][ T1114] ret_from_fork+0x4b/0x80 [ 89.415206][ T1114] ret_from_fork_asm+0x1a/0x30 [ 89.420474][ T1114] [ 89.420474][ T1114] -> #0 (rtnl_mutex){+.+.}-{4:4}: [ 89.427671][ T1114] validate_chain+0x18ef/0x5920 [ 89.433027][ T1114] __lock_acquire+0x1397/0x2100 [ 89.438384][ T1114] lock_acquire+0x1ed/0x550 [ 89.443395][ T1114] __mutex_lock+0x19c/0x1010 [ 89.448495][ T1114] unregister_netdevice_many_notify+0xac2/0x2030 [ 89.455329][ T1114] unregister_netdevice_queue+0x303/0x370 [ 89.461556][ T1114] _cfg80211_unregister_wdev+0x163/0x590 [ 89.467693][ T1114] ieee80211_remove_interfaces+0x4ef/0x700 [ 89.474009][ T1114] ieee80211_unregister_hw+0x5d/0x2c0 [ 89.479888][ T1114] mac80211_hwsim_del_radio+0x2c4/0x4c0 [ 89.485945][ T1114] hwsim_exit_net+0x5c1/0x670 [ 89.491129][ T1114] cleanup_net+0x812/0xd60 [ 89.496049][ T1114] process_scheduled_works+0xabe/0x18e0 [ 89.502104][ T1114] worker_thread+0x870/0xd30 [ 89.507200][ T1114] kthread+0x7a9/0x920 [ 89.511776][ T1114] ret_from_fork+0x4b/0x80 [ 89.516699][ T1114] ret_from_fork_asm+0x1a/0x30 [ 89.521967][ T1114] [ 89.521967][ T1114] other info that might help us debug this: [ 89.521967][ T1114] [ 89.532177][ T1114] Possible unsafe locking scenario: [ 89.532177][ T1114] [ 89.539606][ T1114] CPU0 CPU1 [ 89.544954][ T1114] ---- ---- [ 89.550299][ T1114] lock(&rdev->wiphy.mtx); [ 89.554791][ T1114] lock(rtnl_mutex); [ 89.561282][ T1114] lock(&rdev->wiphy.mtx); [ 89.568294][ T1114] lock(rtnl_mutex); [ 89.572264][ T1114] [ 89.572264][ T1114] *** DEADLOCK *** [ 89.572264][ T1114] [ 89.580391][ T1114] 4 locks held by kworker/u8:5/1114: [ 89.585670][ T1114] #0: ffff88801bef5948 ((wq_completion)netns){+.+.}-{0:0}, at: process_scheduled_works+0x98b/0x18e0 [ 89.596553][ T1114] #1: ffffc90003f7fc60 (net_cleanup_work){+.+.}-{0:0}, at: process_scheduled_works+0x9c6/0x18e0 [ 89.607237][ T1114] #2: ffffffff8feca0d0 (pernet_ops_rwsem){++++}-{4:4}, at: cleanup_net+0x17a/0xd60 [ 89.616635][ T1114] #3: ffff888079ea8768 (&rdev->wiphy.mtx){+.+.}-{4:4}, at: ieee80211_remove_interfaces+0x129/0x700 [ 89.627423][ T1114] [ 89.627423][ T1114] stack backtrace: [ 89.633311][ T1114] CPU: 1 UID: 0 PID: 1114 Comm: kworker/u8:5 Not tainted 6.13.0-syzkaller-g8784714d7f27 #0 [ 89.633325][ T1114] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 12/27/2024 [ 89.633340][ T1114] Workqueue: netns cleanup_net [ 89.633358][ T1114] Call Trace: [ 89.633365][ T1114] [ 89.633372][ T1114] dump_stack_lvl+0x241/0x360 [ 89.633387][ T1114] ? __pfx_dump_stack_lvl+0x10/0x10 [ 89.633400][ T1114] ? __pfx__printk+0x10/0x10 [ 89.633421][ T1114] print_circular_bug+0x13a/0x1b0 [ 89.633436][ T1114] check_noncircular+0x36a/0x4a0 [ 89.633450][ T1114] ? __pfx_check_noncircular+0x10/0x10 [ 89.633464][ T1114] ? lockdep_lock+0x123/0x2b0 [ 89.633483][ T1114] validate_chain+0x18ef/0x5920 [ 89.633502][ T1114] ? __pfx_validate_chain+0x10/0x10 [ 89.633517][ T1114] ? mark_lock+0x9a/0x360 [ 89.633529][ T1114] ? __lock_acquire+0x1397/0x2100 [ 89.633550][ T1114] ? mark_lock+0x9a/0x360 [ 89.633561][ T1114] __lock_acquire+0x1397/0x2100 [ 89.633582][ T1114] lock_acquire+0x1ed/0x550 [ 89.633598][ T1114] ? unregister_netdevice_many_notify+0xac2/0x2030 [ 89.633616][ T1114] ? __pfx_lock_acquire+0x10/0x10 [ 89.633633][ T1114] ? __pfx___might_resched+0x10/0x10 [ 89.633650][ T1114] ? finish_wait+0xd4/0x1e0 [ 89.633667][ T1114] __mutex_lock+0x19c/0x1010 [ 89.633685][ T1114] ? unregister_netdevice_many_notify+0xac2/0x2030 [ 89.633704][ T1114] ? unregister_netdevice_many_notify+0xac2/0x2030 [ 89.633720][ T1114] ? __pfx___mutex_lock+0x10/0x10 [ 89.633736][ T1114] ? __pfx___might_resched+0x10/0x10 [ 89.633752][ T1114] ? unregister_netdevice_many_notify+0x9fa/0x2030 [ 89.633768][ T1114] ? unregister_netdevice_many_notify+0x9fa/0x2030 [ 89.633785][ T1114] unregister_netdevice_many_notify+0xac2/0x2030 [ 89.633801][ T1114] ? mark_lock+0x9a/0x360 [ 89.633815][ T1114] ? __pfx_unregister_netdevice_many_notify+0x10/0x10 [ 89.633831][ T1114] ? kernfs_remove_by_name_ns+0x11b/0x160 [ 89.633848][ T1114] ? __pfx_lock_release+0x10/0x10 [ 89.633870][ T1114] unregister_netdevice_queue+0x303/0x370 [ 89.633885][ T1114] ? __pfx_up_write+0x10/0x10 [ 89.633897][ T1114] ? __pfx_unregister_netdevice_queue+0x10/0x10 [ 89.633914][ T1114] ? kernfs_remove_by_name_ns+0x11b/0x160 [ 89.633931][ T1114] _cfg80211_unregister_wdev+0x163/0x590 [ 89.633946][ T1114] ieee80211_remove_interfaces+0x4ef/0x700 [ 89.633966][ T1114] ? __pfx_ieee80211_remove_interfaces+0x10/0x10 [ 89.633983][ T1114] ? rcu_is_watching+0x15/0xb0 [ 89.633998][ T1114] ieee80211_unregister_hw+0x5d/0x2c0 [ 89.634015][ T1114] mac80211_hwsim_del_radio+0x2c4/0x4c0 [ 89.634036][ T1114] ? __pfx_mac80211_hwsim_del_radio+0x10/0x10 [ 89.634056][ T1114] hwsim_exit_net+0x5c1/0x670 [ 89.634072][ T1114] ? __pfx_hwsim_exit_net+0x10/0x10 [ 89.634093][ T1114] ? __ip_vs_dev_cleanup_batch+0x239/0x260 [ 89.634109][ T1114] cleanup_net+0x812/0xd60 [ 89.634122][ T1114] ? __pfx_cleanup_net+0x10/0x10 [ 89.634137][ T1114] ? process_scheduled_works+0x9c6/0x18e0 [ 89.634151][ T1114] process_scheduled_works+0xabe/0x18e0 [ 89.634173][ T1114] ? __pfx_process_scheduled_works+0x10/0x10 [ 89.634190][ T1114] ? assign_work+0x364/0x3d0 [ 89.634205][ T1114] worker_thread+0x870/0xd30 [ 89.634222][ T1114] ? _raw_spin_unlock_irqrestore+0xdd/0x140 [ 89.634239][ T1114] ? __kthread_parkme+0x169/0x1d0 [ 89.634255][ T1114] ? __pfx_worker_thread+0x10/0x10 [ 89.634270][ T1114] kthread+0x7a9/0x920 [ 89.634286][ T1114] ? __pfx_kthread+0x10/0x10 [ 89.634302][ T1114] ? __pfx_worker_thread+0x10/0x10 [ 89.634317][ T1114] ? __pfx_kthread+0x10/0x10 [ 89.634333][ T1114] ? __pfx_kthread+0x10/0x10 [ 89.634350][ T1114] ? __pfx_kthread+0x10/0x10 [ 89.634366][ T1114] ? _raw_spin_unlock_irq+0x23/0x50 [ 89.634380][ T1114] ? lockdep_hardirqs_on+0x99/0x150 [ 89.634396][ T1114] ? __pfx_kthread+0x10/0x10 [ 89.634413][ T1114] ret_from_fork+0x4b/0x80 [ 89.634428][ T1114] ? __pfx_kthread+0x10/0x10 [ 89.634444][ T1114] ret_from_fork_asm+0x1a/0x30 [ 89.634462][ T1114]