possible deadlock in ieee80211_remove_interfaces ====================================================== WARNING: possible circular locking dependency detected 6.13.0-syzkaller-04046-g0ad9617c78ac #0 Not tainted ------------------------------------------------------ kworker/u8:10/3569 is trying to acquire lock: ffffffff8fcc5a88 (rtnl_mutex){+.+.}-{4:4} , at: rtnl_acquire_if_cleanup_net net/core/dev.c:10272 [inline] , at: unregister_netdevice_many_notify+0xac2/0x2030 net/core/dev.c:11792 but task is already holding lock: ffff888070d18768 (&rdev->wiphy.mtx){+.+.}-{4:4}, at: class_wiphy_constructor include/net/cfg80211.h:6061 [inline] (&rdev->wiphy.mtx){+.+.}-{4:4}, at: ieee80211_remove_interfaces+0x129/0x700 net/mac80211/iface.c:2280 which lock already depends on the new lock. the existing dependency chain (in reverse order) is: -> #1 (&rdev->wiphy.mtx){+.+.}-{4:4}: lock_acquire+0x1ed/0x550 kernel/locking/lockdep.c:5851 __mutex_lock_common kernel/locking/mutex.c:585 [inline] __mutex_lock+0x19c/0x1010 kernel/locking/mutex.c:730 wiphy_lock include/net/cfg80211.h:6046 [inline] wiphy_register+0x1a49/0x27b0 net/wireless/core.c:1006 ieee80211_register_hw+0x354e/0x4240 net/mac80211/main.c:1587 mac80211_hwsim_new_radio+0x2a9f/0x4a90 drivers/net/wireless/virtual/mac80211_hwsim.c:5558 init_mac80211_hwsim+0x87a/0xb00 drivers/net/wireless/virtual/mac80211_hwsim.c:6910 do_one_initcall+0x248/0x870 init/main.c:1267 do_initcall_level+0x157/0x210 init/main.c:1329 do_initcalls+0x3f/0x80 init/main.c:1345 kernel_init_freeable+0x435/0x5d0 init/main.c:1578 kernel_init+0x1d/0x2b0 init/main.c:1467 ret_from_fork+0x4b/0x80 arch/x86/kernel/process.c:148 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244 -> #0 (rtnl_mutex){+.+.}-{4:4}: check_prev_add kernel/locking/lockdep.c:3163 [inline] check_prevs_add kernel/locking/lockdep.c:3282 [inline] validate_chain+0x18ef/0x5920 kernel/locking/lockdep.c:3906 __lock_acquire+0x1397/0x2100 kernel/locking/lockdep.c:5228 lock_acquire+0x1ed/0x550 kernel/locking/lockdep.c:5851 __mutex_lock_common kernel/locking/mutex.c:585 [inline] __mutex_lock+0x19c/0x1010 kernel/locking/mutex.c:730 rtnl_acquire_if_cleanup_net net/core/dev.c:10272 [inline] unregister_netdevice_many_notify+0xac2/0x2030 net/core/dev.c:11792 unregister_netdevice_many net/core/dev.c:11875 [inline] unregister_netdevice_queue+0x303/0x370 net/core/dev.c:11741 unregister_netdevice include/linux/netdevice.h:3329 [inline] _cfg80211_unregister_wdev+0x163/0x590 net/wireless/core.c:1251 ieee80211_remove_interfaces+0x4ef/0x700 net/mac80211/iface.c:2305 ieee80211_unregister_hw+0x5d/0x2c0 net/mac80211/main.c:1681 mac80211_hwsim_del_radio+0x2c4/0x4c0 drivers/net/wireless/virtual/mac80211_hwsim.c:5664 hwsim_exit_net+0x5c1/0x670 drivers/net/wireless/virtual/mac80211_hwsim.c:6544 ops_exit_list net/core/net_namespace.c:172 [inline] cleanup_net+0x812/0xd60 net/core/net_namespace.c:652 process_one_work kernel/workqueue.c:3236 [inline] process_scheduled_works+0xa66/0x1840 kernel/workqueue.c:3317 worker_thread+0x870/0xd30 kernel/workqueue.c:3398 kthread+0x7a9/0x920 kernel/kthread.c:464 ret_from_fork+0x4b/0x80 arch/x86/kernel/process.c:148 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244 other info that might help us debug this: Possible unsafe locking scenario: CPU0 CPU1 ---- ---- lock(&rdev->wiphy.mtx); lock(rtnl_mutex); lock(&rdev->wiphy.mtx); lock(rtnl_mutex); *** DEADLOCK *** 4 locks held by kworker/u8:10/3569: #0: ffff88801baf5948 ((wq_completion)netns){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3211 [inline] #0: ffff88801baf5948 ((wq_completion)netns){+.+.}-{0:0}, at: process_scheduled_works+0x93b/0x1840 kernel/workqueue.c:3317 #1: ffffc9000dbd7c60 (net_cleanup_work){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3212 [inline] #1: ffffc9000dbd7c60 (net_cleanup_work){+.+.}-{0:0}, at: process_scheduled_works+0x976/0x1840 kernel/workqueue.c:3317 #2: ffffffff8fcb94d0 (pernet_ops_rwsem){++++}-{4:4}, at: cleanup_net+0x17a/0xd60 net/core/net_namespace.c:606 #3: ffff888070d18768 (&rdev->wiphy.mtx){+.+.}-{4:4}, at: class_wiphy_constructor include/net/cfg80211.h:6061 [inline] #3: ffff888070d18768 (&rdev->wiphy.mtx){+.+.}-{4:4}, at: ieee80211_remove_interfaces+0x129/0x700 net/mac80211/iface.c:2280 stack backtrace: CPU: 0 UID: 0 PID: 3569 Comm: kworker/u8:10 Not tainted 6.13.0-syzkaller-04046-g0ad9617c78ac #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 12/27/2024 Workqueue: netns cleanup_net Call Trace: __dump_stack lib/dump_stack.c:94 [inline] dump_stack_lvl+0x241/0x360 lib/dump_stack.c:120 print_circular_bug+0x13a/0x1b0 kernel/locking/lockdep.c:2076 check_noncircular+0x36a/0x4a0 kernel/locking/lockdep.c:2208 check_prev_add kernel/locking/lockdep.c:3163 [inline] check_prevs_add kernel/locking/lockdep.c:3282 [inline] validate_chain+0x18ef/0x5920 kernel/locking/lockdep.c:3906 __lock_acquire+0x1397/0x2100 kernel/locking/lockdep.c:5228 lock_acquire+0x1ed/0x550 kernel/locking/lockdep.c:5851 __mutex_lock_common kernel/locking/mutex.c:585 [inline] __mutex_lock+0x19c/0x1010 kernel/locking/mutex.c:730 rtnl_acquire_if_cleanup_net net/core/dev.c:10272 [inline] unregister_netdevice_many_notify+0xac2/0x2030 net/core/dev.c:11792 unregister_netdevice_many net/core/dev.c:11875 [inline] unregister_netdevice_queue+0x303/0x370 net/core/dev.c:11741 unregister_netdevice include/linux/netdevice.h:3329 [inline] _cfg80211_unregister_wdev+0x163/0x590 net/wireless/core.c:1251 ieee80211_remove_interfaces+0x4ef/0x700 net/mac80211/iface.c:2305 ieee80211_unregister_hw+0x5d/0x2c0 net/mac80211/main.c:1681 mac80211_hwsim_del_radio+0x2c4/0x4c0 drivers/net/wireless/virtual/mac80211_hwsim.c:5664 hwsim_exit_net+0x5c1/0x670 drivers/net/wireless/virtual/mac80211_hwsim.c:6544 ops_exit_list net/core/net_namespace.c:172 [inline] cleanup_net+0x812/0xd60 net/core/net_namespace.c:652 process_one_work kernel/workqueue.c:3236 [inline] process_scheduled_works+0xa66/0x1840 kernel/workqueue.c:3317 worker_thread+0x870/0xd30 kernel/workqueue.c:3398 kthread+0x7a9/0x920 kernel/kthread.c:464 ret_from_fork+0x4b/0x80 arch/x86/kernel/process.c:148 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244 Warning: Permanently added '10.128.10.26' (ED25519) to the list of known hosts. 2025/01/25 00:49:54 ignoring optional flag "sandboxArg"="0" 2025/01/25 00:49:54 parsed 1 programs [ 65.537311][ T5833] cgroup: Unknown subsys name 'net' [ 65.678390][ T5833] cgroup: Unknown subsys name 'cpuset' [ 65.686208][ T5833] cgroup: Unknown subsys name 'rlimit' [ 67.007862][ T5833] Adding 124996k swap on ./swap-file. Priority:0 extents:1 across:124996k [ 69.560383][ T5842] 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. [ 70.018863][ T5859] Bluetooth: hci0: unexpected cc 0x0c03 length: 249 > 1 [ 70.027897][ T5859] Bluetooth: hci0: unexpected cc 0x1003 length: 249 > 9 [ 70.035963][ T5859] Bluetooth: hci0: unexpected cc 0x1001 length: 249 > 9 [ 70.044258][ T5859] Bluetooth: hci0: unexpected cc 0x0c23 length: 249 > 4 [ 70.051926][ T5859] Bluetooth: hci0: unexpected cc 0x0c25 length: 249 > 3 [ 70.059665][ T5859] Bluetooth: hci0: unexpected cc 0x0c38 length: 249 > 2 [ 70.982066][ T5885] chnl_net:caif_netlink_parms(): no params data found [ 71.033350][ T5885] bridge0: port 1(bridge_slave_0) entered blocking state [ 71.041072][ T5885] bridge0: port 1(bridge_slave_0) entered disabled state [ 71.048933][ T5885] bridge_slave_0: entered allmulticast mode [ 71.055686][ T5885] bridge_slave_0: entered promiscuous mode [ 71.099544][ T5885] bridge0: port 2(bridge_slave_1) entered blocking state [ 71.107412][ T5885] bridge0: port 2(bridge_slave_1) entered disabled state [ 71.115206][ T5885] bridge_slave_1: entered allmulticast mode [ 71.121844][ T5885] bridge_slave_1: entered promiscuous mode [ 71.151455][ T5885] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 71.162556][ T5885] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 71.187377][ T5885] team0: Port device team_slave_0 added [ 71.200036][ T5885] team0: Port device team_slave_1 added [ 71.227999][ T5885] batman_adv: batadv0: Adding interface: batadv_slave_0 [ 71.235452][ T5885] batman_adv: batadv0: The MTU of interface batadv_slave_0 is too small (1500) to handle the transport of batman-adv packets. Packets going over this interface will be fragmented on layer2 which could impact the performance. Setting the MTU to 1560 would solve the problem. [ 71.261678][ T5885] batman_adv: batadv0: Not using interface batadv_slave_0 (retrying later): interface not active [ 71.278190][ T5885] batman_adv: batadv0: Adding interface: batadv_slave_1 [ 71.286271][ T5885] batman_adv: batadv0: The MTU of interface batadv_slave_1 is too small (1500) to handle the transport of batman-adv packets. Packets going over this interface will be fragmented on layer2 which could impact the performance. Setting the MTU to 1560 would solve the problem. [ 71.312508][ T5885] batman_adv: batadv0: Not using interface batadv_slave_1 (retrying later): interface not active [ 71.350082][ T5885] hsr_slave_0: entered promiscuous mode [ 71.356756][ T5885] hsr_slave_1: entered promiscuous mode [ 71.456320][ T5885] netdevsim netdevsim0 netdevsim0: renamed from eth0 [ 71.467399][ T5885] netdevsim netdevsim0 netdevsim1: renamed from eth1 [ 71.478014][ T5885] netdevsim netdevsim0 netdevsim2: renamed from eth2 [ 71.487987][ T5885] netdevsim netdevsim0 netdevsim3: renamed from eth3 [ 71.510041][ T5885] bridge0: port 2(bridge_slave_1) entered blocking state [ 71.517296][ T5885] bridge0: port 2(bridge_slave_1) entered forwarding state [ 71.525206][ T5885] bridge0: port 1(bridge_slave_0) entered blocking state [ 71.532333][ T5885] bridge0: port 1(bridge_slave_0) entered forwarding state [ 71.574482][ T5885] 8021q: adding VLAN 0 to HW filter on device bond0 [ 71.592281][ T3569] bridge0: port 1(bridge_slave_0) entered disabled state [ 71.601818][ T3569] bridge0: port 2(bridge_slave_1) entered disabled state [ 71.618459][ T5885] 8021q: adding VLAN 0 to HW filter on device team0 [ 71.631122][ T36] bridge0: port 1(bridge_slave_0) entered blocking state [ 71.638278][ T36] bridge0: port 1(bridge_slave_0) entered forwarding state [ 71.648397][ T1293] ieee802154 phy0 wpan0: encryption failed: -22 [ 71.656219][ T1293] ieee802154 phy1 wpan1: encryption failed: -22 [ 71.656263][ T36] bridge0: port 2(bridge_slave_1) entered blocking state [ 71.669598][ T36] bridge0: port 2(bridge_slave_1) entered forwarding state [ 71.787270][ T5885] 8021q: adding VLAN 0 to HW filter on device batadv0 [ 71.820292][ T5885] veth0_vlan: entered promiscuous mode [ 71.829699][ T5885] veth1_vlan: entered promiscuous mode [ 71.852905][ T5885] veth0_macvtap: entered promiscuous mode [ 71.861752][ T5885] veth1_macvtap: entered promiscuous mode [ 71.878814][ T5885] batman_adv: batadv0: Interface activated: batadv_slave_0 [ 71.894155][ T5885] batman_adv: batadv0: Interface activated: batadv_slave_1 [ 71.904518][ T5885] netdevsim netdevsim0 netdevsim0: set [1, 0] type 2 family 0 port 6081 - 0 [ 71.913672][ T5885] netdevsim netdevsim0 netdevsim1: set [1, 0] type 2 family 0 port 6081 - 0 [ 71.923297][ T5885] netdevsim netdevsim0 netdevsim2: set [1, 0] type 2 family 0 port 6081 - 0 [ 71.932095][ T5885] netdevsim netdevsim0 netdevsim3: set [1, 0] type 2 family 0 port 6081 - 0 [ 72.036776][ T3569] netdevsim netdevsim0 netdevsim3 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 72.131114][ T3569] netdevsim netdevsim0 netdevsim2 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 72.211892][ T3569] netdevsim netdevsim0 netdevsim1 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 72.282993][ T3569] netdevsim netdevsim0 netdevsim0 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 72.440543][ T11] wlan0: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 72.452242][ T11] wlan0: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 72.476124][ T36] wlan1: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 72.484166][ T36] wlan1: Creating new IBSS network, BSSID 50:50:50:50:50:50 2025/01/25 00:50:04 executed programs: 0 [ 73.431151][ T54] Bluetooth: hci0: unexpected cc 0x0c03 length: 249 > 1 [ 73.439449][ T54] Bluetooth: hci0: unexpected cc 0x1003 length: 249 > 9 [ 73.448772][ T54] Bluetooth: hci0: unexpected cc 0x1001 length: 249 > 9 [ 73.457981][ T54] Bluetooth: hci0: unexpected cc 0x0c23 length: 249 > 4 [ 73.466385][ T54] Bluetooth: hci0: unexpected cc 0x0c25 length: 249 > 3 [ 73.474157][ T54] Bluetooth: hci0: unexpected cc 0x0c38 length: 249 > 2 [ 73.569090][ T5930] chnl_net:caif_netlink_parms(): no params data found [ 73.613167][ T5930] bridge0: port 1(bridge_slave_0) entered blocking state [ 73.620660][ T5930] bridge0: port 1(bridge_slave_0) entered disabled state [ 73.628436][ T5930] bridge_slave_0: entered allmulticast mode [ 73.635400][ T5930] bridge_slave_0: entered promiscuous mode [ 73.642598][ T5930] bridge0: port 2(bridge_slave_1) entered blocking state [ 73.650030][ T5930] bridge0: port 2(bridge_slave_1) entered disabled state [ 73.657264][ T5930] bridge_slave_1: entered allmulticast mode [ 73.663797][ T5930] bridge_slave_1: entered promiscuous mode [ 73.689958][ T5930] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 73.701691][ T5930] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 73.729131][ T5930] team0: Port device team_slave_0 added [ 73.739300][ T5930] team0: Port device team_slave_1 added [ 73.757951][ T5930] batman_adv: batadv0: Adding interface: batadv_slave_0 [ 73.765117][ T5930] batman_adv: batadv0: The MTU of interface batadv_slave_0 is too small (1500) to handle the transport of batman-adv packets. Packets going over this interface will be fragmented on layer2 which could impact the performance. Setting the MTU to 1560 would solve the problem. [ 73.791643][ T5930] batman_adv: batadv0: Not using interface batadv_slave_0 (retrying later): interface not active [ 73.804218][ T5930] batman_adv: batadv0: Adding interface: batadv_slave_1 [ 73.811294][ T5930] batman_adv: batadv0: The MTU of interface batadv_slave_1 is too small (1500) to handle the transport of batman-adv packets. Packets going over this interface will be fragmented on layer2 which could impact the performance. Setting the MTU to 1560 would solve the problem. [ 73.837943][ T5930] batman_adv: batadv0: Not using interface batadv_slave_1 (retrying later): interface not active [ 73.869247][ T5930] hsr_slave_0: entered promiscuous mode [ 73.875404][ T5930] hsr_slave_1: entered promiscuous mode [ 73.881748][ T5930] debugfs: Directory 'hsr0' with parent 'hsr' already present! [ 73.890502][ T5930] Cannot create hsr debugfs directory [ 74.836706][ T3569] bridge_slave_1: left allmulticast mode [ 74.842620][ T3569] bridge_slave_1: left promiscuous mode [ 74.849970][ T3569] bridge0: port 2(bridge_slave_1) entered disabled state [ 74.861477][ T3569] bridge_slave_0: left allmulticast mode [ 74.868440][ T3569] bridge_slave_0: left promiscuous mode [ 74.874257][ T3569] bridge0: port 1(bridge_slave_0) entered disabled state [ 75.248773][ T3569] bond0 (unregistering): (slave bond_slave_0): Releasing backup interface [ 75.259993][ T3569] bond0 (unregistering): (slave bond_slave_1): Releasing backup interface [ 75.270148][ T3569] bond0 (unregistering): Released all slaves [ 75.397522][ T3569] hsr_slave_0: left promiscuous mode [ 75.403618][ T3569] hsr_slave_1: left promiscuous mode [ 75.413738][ T3569] batman_adv: batadv0: Interface deactivated: batadv_slave_0 [ 75.422675][ T3569] batman_adv: batadv0: Removing interface: batadv_slave_0 [ 75.434294][ T3569] batman_adv: batadv0: Interface deactivated: batadv_slave_1 [ 75.442100][ T3569] batman_adv: batadv0: Removing interface: batadv_slave_1 [ 75.461706][ T3569] veth1_macvtap: left promiscuous mode [ 75.470038][ T3569] veth0_macvtap: left promiscuous mode [ 75.475751][ T3569] veth1_vlan: left promiscuous mode [ 75.481260][ T3569] veth0_vlan: left promiscuous mode [ 75.565961][ T5859] Bluetooth: hci0: command tx timeout [ 75.853389][ T3569] team0 (unregistering): Port device team_slave_1 removed [ 75.881383][ T3569] team0 (unregistering): Port device team_slave_0 removed [ 76.143382][ T5930] netdevsim netdevsim0 netdevsim0: renamed from eth0 [ 76.153642][ T5930] netdevsim netdevsim0 netdevsim1: renamed from eth1 [ 76.167196][ T5930] netdevsim netdevsim0 netdevsim2: renamed from eth2 [ 76.182687][ T5930] netdevsim netdevsim0 netdevsim3: renamed from eth3 [ 76.254254][ T5930] 8021q: adding VLAN 0 to HW filter on device bond0 [ 76.284097][ T5930] 8021q: adding VLAN 0 to HW filter on device team0 [ 76.294083][ T12] bridge0: port 1(bridge_slave_0) entered blocking state [ 76.301198][ T12] bridge0: port 1(bridge_slave_0) entered forwarding state [ 76.314251][ T3503] bridge0: port 2(bridge_slave_1) entered blocking state [ 76.321411][ T3503] bridge0: port 2(bridge_slave_1) entered forwarding state [ 76.558916][ T5930] 8021q: adding VLAN 0 to HW filter on device batadv0 [ 76.613542][ T5930] veth0_vlan: entered promiscuous mode [ 76.629717][ T5930] veth1_vlan: entered promiscuous mode [ 76.675759][ T5930] veth0_macvtap: entered promiscuous mode [ 76.739725][ T5930] veth1_macvtap: entered promiscuous mode [ 76.746039][ T3569] [ 76.748394][ T3569] ====================================================== [ 76.753239][ T5930] batman_adv: batadv0: Interface activated: batadv_slave_0 [ 76.755406][ T3569] WARNING: possible circular locking dependency detected [ 76.755423][ T3569] 6.13.0-syzkaller-04046-g0ad9617c78ac #0 Not tainted [ 76.755432][ T3569] ------------------------------------------------------ [ 76.755438][ T3569] kworker/u8:10/3569 is trying to acquire lock: [ 76.755447][ T3569] ffffffff8fcc5a88 (rtnl_mutex){+.+.}-{4:4} [ 76.765018][ T5930] batman_adv: batadv0: Interface activated: batadv_slave_1 [ 76.769626][ T3569] , at: unregister_netdevice_many_notify+0xac2/0x2030 [ 76.778603][ T5930] netdevsim netdevsim0 netdevsim0: set [1, 0] type 2 family 0 port 6081 - 0 [ 76.784345][ T3569] [ 76.784345][ T3569] but task is already holding lock: [ 76.784360][ T3569] ffff888070d18768 [ 76.790642][ T5930] netdevsim netdevsim0 netdevsim1: set [1, 0] type 2 family 0 port 6081 - 0 [ 76.796445][ T3569] (&rdev->wiphy.mtx){+.+.}-{4:4}, at: ieee80211_remove_interfaces+0x129/0x700 [ 76.796486][ T3569] [ 76.796486][ T3569] which lock already depends on the new lock. [ 76.796486][ T3569] [ 76.796492][ T3569] [ 76.796492][ T3569] the existing dependency chain (in reverse order) is: [ 76.796497][ T3569] [ 76.796497][ T3569] -> #1 (&rdev->wiphy.mtx){+.+.}-{4:4}: [ 76.796519][ T3569] lock_acquire+0x1ed/0x550 [ 76.796536][ T3569] __mutex_lock+0x19c/0x1010 [ 76.796554][ T3569] wiphy_register+0x1a49/0x27b0 [ 76.796572][ T3569] ieee80211_register_hw+0x354e/0x4240 [ 76.796591][ T3569] mac80211_hwsim_new_radio+0x2a9f/0x4a90 [ 76.796606][ T3569] init_mac80211_hwsim+0x87a/0xb00 [ 76.796619][ T3569] do_one_initcall+0x248/0x870 [ 76.796637][ T3569] do_initcall_level+0x157/0x210 [ 76.804483][ T5930] netdevsim netdevsim0 netdevsim2: set [1, 0] type 2 family 0 port 6081 - 0 [ 76.810630][ T3569] do_initcalls+0x3f/0x80 [ 76.810656][ T3569] kernel_init_freeable+0x435/0x5d0 [ 76.810675][ T3569] kernel_init+0x1d/0x2b0 [ 76.819434][ T5930] netdevsim netdevsim0 netdevsim3: set [1, 0] type 2 family 0 port 6081 - 0 [ 76.826739][ T3569] ret_from_fork+0x4b/0x80 [ 76.826757][ T3569] ret_from_fork_asm+0x1a/0x30 [ 76.826771][ T3569] [ 76.826771][ T3569] -> #0 (rtnl_mutex){+.+.}-{4:4}: [ 76.969401][ T3569] validate_chain+0x18ef/0x5920 [ 76.974769][ T3569] __lock_acquire+0x1397/0x2100 [ 76.980142][ T3569] lock_acquire+0x1ed/0x550 [ 76.985153][ T3569] __mutex_lock+0x19c/0x1010 [ 76.990258][ T3569] unregister_netdevice_many_notify+0xac2/0x2030 [ 76.997100][ T3569] unregister_netdevice_queue+0x303/0x370 [ 77.003333][ T3569] _cfg80211_unregister_wdev+0x163/0x590 [ 77.009477][ T3569] ieee80211_remove_interfaces+0x4ef/0x700 [ 77.015794][ T3569] ieee80211_unregister_hw+0x5d/0x2c0 [ 77.021672][ T3569] mac80211_hwsim_del_radio+0x2c4/0x4c0 [ 77.027745][ T3569] hwsim_exit_net+0x5c1/0x670 [ 77.032927][ T3569] cleanup_net+0x812/0xd60 [ 77.037846][ T3569] process_scheduled_works+0xa66/0x1840 [ 77.043894][ T3569] worker_thread+0x870/0xd30 [ 77.048990][ T3569] kthread+0x7a9/0x920 [ 77.053584][ T3569] ret_from_fork+0x4b/0x80 [ 77.058512][ T3569] ret_from_fork_asm+0x1a/0x30 [ 77.063784][ T3569] [ 77.063784][ T3569] other info that might help us debug this: [ 77.063784][ T3569] [ 77.074080][ T3569] Possible unsafe locking scenario: [ 77.074080][ T3569] [ 77.081512][ T3569] CPU0 CPU1 [ 77.086858][ T3569] ---- ---- [ 77.092209][ T3569] lock(&rdev->wiphy.mtx); [ 77.096801][ T3569] lock(rtnl_mutex); [ 77.103298][ T3569] lock(&rdev->wiphy.mtx); [ 77.110394][ T3569] lock(rtnl_mutex); [ 77.114365][ T3569] [ 77.114365][ T3569] *** DEADLOCK *** [ 77.114365][ T3569] [ 77.122492][ T3569] 4 locks held by kworker/u8:10/3569: [ 77.127865][ T3569] #0: ffff88801baf5948 ((wq_completion)netns){+.+.}-{0:0}, at: process_scheduled_works+0x93b/0x1840 [ 77.138743][ T3569] #1: ffffc9000dbd7c60 (net_cleanup_work){+.+.}-{0:0}, at: process_scheduled_works+0x976/0x1840 [ 77.149276][ T3569] #2: ffffffff8fcb94d0 (pernet_ops_rwsem){++++}-{4:4}, at: cleanup_net+0x17a/0xd60 [ 77.158684][ T3569] #3: ffff888070d18768 (&rdev->wiphy.mtx){+.+.}-{4:4}, at: ieee80211_remove_interfaces+0x129/0x700 [ 77.169566][ T3569] [ 77.169566][ T3569] stack backtrace: [ 77.175452][ T3569] CPU: 0 UID: 0 PID: 3569 Comm: kworker/u8:10 Not tainted 6.13.0-syzkaller-04046-g0ad9617c78ac #0 [ 77.175467][ T3569] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 12/27/2024 [ 77.175476][ T3569] Workqueue: netns cleanup_net [ 77.175497][ T3569] Call Trace: [ 77.175502][ T3569] [ 77.175508][ T3569] dump_stack_lvl+0x241/0x360 [ 77.175527][ T3569] ? __pfx_dump_stack_lvl+0x10/0x10 [ 77.175543][ T3569] ? __pfx__printk+0x10/0x10 [ 77.175562][ T3569] print_circular_bug+0x13a/0x1b0 [ 77.175581][ T3569] check_noncircular+0x36a/0x4a0 [ 77.175599][ T3569] ? __pfx_check_noncircular+0x10/0x10 [ 77.175616][ T3569] ? lockdep_lock+0x123/0x2b0 [ 77.175633][ T3569] validate_chain+0x18ef/0x5920 [ 77.175656][ T3569] ? __pfx_validate_chain+0x10/0x10 [ 77.175675][ T3569] ? mark_lock+0x9a/0x360 [ 77.175691][ T3569] ? __lock_acquire+0x1397/0x2100 [ 77.175710][ T3569] ? mark_lock+0x9a/0x360 [ 77.175725][ T3569] __lock_acquire+0x1397/0x2100 [ 77.175744][ T3569] lock_acquire+0x1ed/0x550 [ 77.175757][ T3569] ? unregister_netdevice_many_notify+0xac2/0x2030 [ 77.175776][ T3569] ? __pfx_lock_acquire+0x10/0x10 [ 77.175791][ T3569] ? __pfx___might_resched+0x10/0x10 [ 77.175805][ T3569] ? finish_wait+0xd4/0x1e0 [ 77.175820][ T3569] __mutex_lock+0x19c/0x1010 [ 77.175838][ T3569] ? unregister_netdevice_many_notify+0xac2/0x2030 [ 77.175856][ T3569] ? unregister_netdevice_many_notify+0xac2/0x2030 [ 77.175871][ T3569] ? __pfx___mutex_lock+0x10/0x10 [ 77.175887][ T3569] ? __pfx___might_resched+0x10/0x10 [ 77.175901][ T3569] ? unregister_netdevice_many_notify+0x9fa/0x2030 [ 77.175916][ T3569] ? unregister_netdevice_many_notify+0x9fa/0x2030 [ 77.175932][ T3569] unregister_netdevice_many_notify+0xac2/0x2030 [ 77.175947][ T3569] ? mark_lock+0x9a/0x360 [ 77.175964][ T3569] ? __pfx_unregister_netdevice_many_notify+0x10/0x10 [ 77.175980][ T3569] ? kernfs_remove_by_name_ns+0x11b/0x160 [ 77.175997][ T3569] ? __pfx_lock_release+0x10/0x10 [ 77.176017][ T3569] unregister_netdevice_queue+0x303/0x370 [ 77.176031][ T3569] ? __pfx_up_write+0x10/0x10 [ 77.176042][ T3569] ? __pfx_unregister_netdevice_queue+0x10/0x10 [ 77.176057][ T3569] ? kernfs_remove_by_name_ns+0x11b/0x160 [ 77.176074][ T3569] _cfg80211_unregister_wdev+0x163/0x590 [ 77.176093][ T3569] ieee80211_remove_interfaces+0x4ef/0x700 [ 77.176110][ T3569] ? __pfx_ieee80211_remove_interfaces+0x10/0x10 [ 77.176124][ T3569] ? rcu_is_watching+0x15/0xb0 [ 77.176143][ T3569] ieee80211_unregister_hw+0x5d/0x2c0 [ 77.176156][ T3569] mac80211_hwsim_del_radio+0x2c4/0x4c0 [ 77.176173][ T3569] ? __pfx_mac80211_hwsim_del_radio+0x10/0x10 [ 77.176190][ T3569] hwsim_exit_net+0x5c1/0x670 [ 77.176203][ T3569] ? __pfx_hwsim_exit_net+0x10/0x10 [ 77.176216][ T3569] ? __ip_vs_dev_cleanup_batch+0x239/0x260 [ 77.176235][ T3569] cleanup_net+0x812/0xd60 [ 77.176247][ T3569] ? __pfx_cleanup_net+0x10/0x10 [ 77.176261][ T3569] ? process_scheduled_works+0x976/0x1840 [ 77.176274][ T3569] process_scheduled_works+0xa66/0x1840 [ 77.176300][ T3569] ? __pfx_process_scheduled_works+0x10/0x10 [ 77.176315][ T3569] ? assign_work+0x364/0x3d0 [ 77.176328][ T3569] worker_thread+0x870/0xd30 [ 77.176343][ T3569] ? _raw_spin_unlock_irqrestore+0xdd/0x140 [ 77.176359][ T3569] ? __kthread_parkme+0x169/0x1d0 [ 77.176373][ T3569] ? __pfx_worker_thread+0x10/0x10 [ 77.176386][ T3569] kthread+0x7a9/0x920 [ 77.176400][ T3569] ? __pfx_kthread+0x10/0x10 [ 77.176415][ T3569] ? __pfx_worker_thread+0x10/0x10 [ 77.176427][ T3569] ? __pfx_kthread+0x10/0x10 [ 77.176440][ T3569] ? __pfx_kthread+0x10/0x10 [ 77.176455][ T3569] ? __pfx_kthread+0x10/0x10 [ 77.176469][ T3569] ? _raw_spin_unlock_irq+0x23/0x50 [ 77.176483][ T3569] ? lockdep_hardirqs_on+0x99/0x150 [ 77.176499][ T3569] ? __pfx_kthread+0x10/0x10 [ 77.176514][ T3569] ret_from_fork+0x4b/0x80 [ 77.176527][ T3569] ? __pfx_kthread+0x10/0x10 [ 77.176541][ T3569] ret_from_fork_asm+0x1a/0x30 [ 77.176558][ T3569] [ 77.594508][ T5930] ieee80211 phy5: Selected rate control algorithm 'minstrel_ht' [ 77.614408][ T3503] wlan0: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 77.625685][ T5930] ieee80211 phy6: Selected rate control algorithm 'minstrel_ht' [ 77.635368][ T3503] wlan0: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 77.644949][ T5859] Bluetooth: hci0: command tx timeout [ 77.662672][ T11] wlan1: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 77.671703][ T11] wlan1: Creating new IBSS network, BSSID 50:50:50:50:50:50 syzkaller build log: go env (err=) GO111MODULE='auto' GOARCH='amd64' GOBIN='' GOCACHE='/syzkaller/.cache/go-build' GOENV='/syzkaller/.config/go/env' GOEXE='' GOEXPERIMENT='' GOFLAGS='' GOHOSTARCH='amd64' GOHOSTOS='linux' GOINSECURE='' GOMODCACHE='/syzkaller/jobs-2/linux/gopath/pkg/mod' GONOPROXY='' GONOSUMDB='' GOOS='linux' GOPATH='/syzkaller/jobs-2/linux/gopath' GOPRIVATE='' GOPROXY='https://proxy.golang.org,direct' GOROOT='/usr/local/go' GOSUMDB='sum.golang.org' GOTMPDIR='' GOTOOLCHAIN='auto' GOTOOLDIR='/usr/local/go/pkg/tool/linux_amd64' GOVCS='' GOVERSION='go1.22.7' GCCGO='gccgo' GOAMD64='v1' AR='ar' CC='gcc' CXX='g++' CGO_ENABLED='1' GOMOD='/syzkaller/jobs-2/linux/gopath/src/github.com/google/syzkaller/go.mod' GOWORK='' CGO_CFLAGS='-O2 -g' CGO_CPPFLAGS='' CGO_CXXFLAGS='-O2 -g' CGO_FFLAGS='-O2 -g' CGO_LDFLAGS='-O2 -g' PKG_CONFIG='pkg-config' GOGCCFLAGS='-fPIC -m64 -pthread -Wl,--no-gc-sections -fmessage-length=0 -ffile-prefix-map=/tmp/go-build2529206652=/tmp/go-build -gno-record-gcc-switches' git status (err=) HEAD detached at 67d7ec0a69 nothing to commit, working tree clean tput: No value for $TERM and no -T specified tput: No value for $TERM and no -T specified Makefile:31: run command via tools/syz-env for best compatibility, see: Makefile:32: https://github.com/google/syzkaller/blob/master/docs/contributing.md#using-syz-env go list -f '{{.Stale}}' ./sys/syz-sysgen | grep -q false || go install ./sys/syz-sysgen make .descriptions tput: No value for $TERM and no -T specified tput: No value for $TERM and no -T specified Makefile:31: run command via tools/syz-env for best compatibility, see: Makefile:32: https://github.com/google/syzkaller/blob/master/docs/contributing.md#using-syz-env bin/syz-sysgen go fmt ./sys/... >/dev/null touch .descriptions GOOS=linux GOARCH=amd64 go build "-ldflags=-s -w -X github.com/google/syzkaller/prog.GitRevision=67d7ec0a69193b2acbb8cdb5109d5505a9128ac5 -X 'github.com/google/syzkaller/prog.gitRevisionDate=20250109-184308'" "-tags=syz_target syz_os_linux syz_arch_amd64 " -o ./bin/linux_amd64/syz-execprog github.com/google/syzkaller/tools/syz-execprog mkdir -p ./bin/linux_amd64 g++ -o ./bin/linux_amd64/syz-executor executor/executor.cc \ -m64 -O2 -pthread -Wall -Werror -Wparentheses -Wunused-const-variable -Wframe-larger-than=16384 -Wno-stringop-overflow -Wno-array-bounds -Wno-format-overflow -Wno-unused-but-set-variable -Wno-unused-command-line-argument -static-pie -std=c++17 -I. -Iexecutor/_include -fpermissive -w -DGOOS_linux=1 -DGOARCH_amd64=1 \ -DHOSTGOOS_linux=1 -DGIT_REVISION=\"67d7ec0a69193b2acbb8cdb5109d5505a9128ac5\" /usr/bin/ld: /tmp/cccFlx3W.o: in function `Connection::Connect(char const*, char const*)': executor.cc:(.text._ZN10Connection7ConnectEPKcS1_[_ZN10Connection7ConnectEPKcS1_]+0x104): warning: Using 'gethostbyname' in statically linked applications requires at runtime the shared libraries from the glibc version used for linking