Warning: Permanently added '10.128.0.172' (ED25519) to the list of known hosts. 2026/10/09 04:52:48 parsed 1 programs 2026/10/09 04:52:48 serving rpc on tcp://38447 syzkaller login: [ 75.130388][ T4198] cgroup: Unknown subsys name 'net' [ 75.252122][ T4198] cgroup: Unknown subsys name 'rlimit' Setting up swapspace version 1, size = 127995904 bytes [ 76.967735][ T4198] Adding 124996k swap on ./swap-file. Priority:0 extents:1 across:124996k FS [ 80.535335][ T4256] chnl_net:caif_netlink_parms(): no params data found [ 80.603684][ T4256] bridge0: port 1(bridge_slave_0) entered blocking state [ 80.613027][ T4256] bridge0: port 1(bridge_slave_0) entered disabled state [ 80.622216][ T4256] device bridge_slave_0 entered promiscuous mode [ 80.632658][ T4256] bridge0: port 2(bridge_slave_1) entered blocking state [ 80.640704][ T4256] bridge0: port 2(bridge_slave_1) entered disabled state [ 80.649041][ T4256] device bridge_slave_1 entered promiscuous mode [ 80.674492][ T4256] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 80.686741][ T4256] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 80.717072][ T4256] team0: Port device team_slave_0 added [ 80.726849][ T4256] team0: Port device team_slave_1 added [ 80.760006][ T4256] batman_adv: batadv0: Adding interface: batadv_slave_0 [ 80.767303][ T4256] 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. [ 80.793650][ T4256] batman_adv: batadv0: Not using interface batadv_slave_0 (retrying later): interface not active [ 80.809483][ T4256] batman_adv: batadv0: Adding interface: batadv_slave_1 [ 80.816724][ T4256] 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. [ 80.844444][ T4256] batman_adv: batadv0: Not using interface batadv_slave_1 (retrying later): interface not active [ 80.937910][ T4256] device hsr_slave_0 entered promiscuous mode [ 80.952329][ T4256] device hsr_slave_1 entered promiscuous mode [ 81.097847][ T4256] netdevsim netdevsim0 netdevsim0: renamed from eth0 [ 81.110495][ T4256] netdevsim netdevsim0 netdevsim1: renamed from eth1 [ 81.120937][ T4256] netdevsim netdevsim0 netdevsim2: renamed from eth2 [ 81.130457][ T4256] netdevsim netdevsim0 netdevsim3: renamed from eth3 [ 81.201317][ T4256] 8021q: adding VLAN 0 to HW filter on device bond0 [ 81.216324][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): bond0: link becomes ready [ 81.229281][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): veth1: link becomes ready [ 81.237354][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 81.249699][ T4256] 8021q: adding VLAN 0 to HW filter on device team0 [ 81.261503][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bridge: link becomes ready [ 81.271314][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 81.281201][ T144] bridge0: port 1(bridge_slave_0) entered blocking state [ 81.288616][ T144] bridge0: port 1(bridge_slave_0) entered forwarding state [ 81.300011][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): bridge0: link becomes ready [ 81.332734][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bridge: link becomes ready [ 81.342188][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 81.351635][ T144] bridge0: port 2(bridge_slave_1) entered blocking state [ 81.358808][ T144] bridge0: port 2(bridge_slave_1) entered forwarding state [ 81.373343][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bond: link becomes ready [ 81.417251][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 81.426673][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): team0: link becomes ready [ 81.443753][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 81.482011][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 81.497201][ T1281] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 81.526767][ T4256] IPv6: ADDRCONF(NETDEV_CHANGE): hsr0: link becomes ready [ 81.669252][ T1281] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan1: link becomes ready [ 81.677571][ T1281] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan0: link becomes ready [ 81.692181][ T4256] 8021q: adding VLAN 0 to HW filter on device batadv0 [ 81.734141][ T1281] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_virt_wifi: link becomes ready [ 81.744337][ T1281] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_virt_wifi: link becomes ready [ 81.781046][ T1281] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_vlan: link becomes ready [ 81.790540][ T1281] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_vlan: link becomes ready [ 81.801675][ T1281] IPv6: ADDRCONF(NETDEV_CHANGE): vlan0: link becomes ready [ 81.810738][ T1281] IPv6: ADDRCONF(NETDEV_CHANGE): vlan1: link becomes ready [ 81.822786][ T4256] device veth0_vlan entered promiscuous mode [ 81.852663][ T4256] device veth1_vlan entered promiscuous mode [ 81.878765][ T1281] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan0: link becomes ready [ 81.887546][ T1281] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan1: link becomes ready [ 81.896587][ T1281] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_macvtap: link becomes ready [ 81.905489][ T1281] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_macvtap: link becomes ready [ 81.916933][ T4256] device veth0_macvtap entered promiscuous mode [ 81.929746][ T4256] device veth1_macvtap entered promiscuous mode [ 81.968530][ T4256] batman_adv: batadv0: Interface activated: batadv_slave_0 [ 81.976336][ T155] IPv6: ADDRCONF(NETDEV_CHANGE): macvtap0: link becomes ready [ 81.984676][ T155] IPv6: ADDRCONF(NETDEV_CHANGE): macsec0: link becomes ready [ 81.993624][ T155] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_0: link becomes ready [ 82.006217][ T155] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_batadv: link becomes ready [ 82.019543][ T4256] batman_adv: batadv0: Interface activated: batadv_slave_1 [ 82.028736][ T1281] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_1: link becomes ready [ 82.037705][ T1281] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_batadv: link becomes ready [ 82.050713][ T4256] netdevsim netdevsim0 netdevsim0: set [1, 0] type 2 family 0 port 6081 - 0 [ 82.059763][ T4256] netdevsim netdevsim0 netdevsim1: set [1, 0] type 2 family 0 port 6081 - 0 [ 82.068816][ T4256] netdevsim netdevsim0 netdevsim2: set [1, 0] type 2 family 0 port 6081 - 0 [ 82.078551][ T4256] netdevsim netdevsim0 netdevsim3: set [1, 0] type 2 family 0 port 6081 - 0 [ 82.333316][ T155] wlan0: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 82.349071][ T155] wlan0: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 82.361014][ T1281] IPv6: ADDRCONF(NETDEV_CHANGE): wlan0: link becomes ready [ 82.394586][ T1281] wlan1: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 82.404771][ T1281] wlan1: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 82.417058][ T155] IPv6: ADDRCONF(NETDEV_CHANGE): wlan1: link becomes ready 2026/10/09 04:53:00 executed programs: 0 [ 83.929125][ T154] netdevsim netdevsim0 netdevsim3 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 83.948836][ T4304] chnl_net:caif_netlink_parms(): no params data found [ 83.998210][ T4304] bridge0: port 1(bridge_slave_0) entered blocking state [ 84.005471][ T4304] bridge0: port 1(bridge_slave_0) entered disabled state [ 84.013647][ T4304] device bridge_slave_0 entered promiscuous mode [ 84.023426][ T4304] bridge0: port 2(bridge_slave_1) entered blocking state [ 84.030901][ T4304] bridge0: port 2(bridge_slave_1) entered disabled state [ 84.039145][ T4304] device bridge_slave_1 entered promiscuous mode [ 84.063072][ T4304] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 84.076686][ T4304] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 84.101835][ T4304] team0: Port device team_slave_0 added [ 84.109880][ T4304] team0: Port device team_slave_1 added [ 84.129293][ T4304] batman_adv: batadv0: Adding interface: batadv_slave_0 [ 84.136382][ T4304] 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. [ 84.162993][ T4304] batman_adv: batadv0: Not using interface batadv_slave_0 (retrying later): interface not active [ 84.176449][ T4304] batman_adv: batadv0: Adding interface: batadv_slave_1 [ 84.183444][ T4304] 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. [ 84.209417][ T4304] batman_adv: batadv0: Not using interface batadv_slave_1 (retrying later): interface not active [ 84.242752][ T4304] device hsr_slave_0 entered promiscuous mode [ 84.249837][ T4304] device hsr_slave_1 entered promiscuous mode [ 84.256786][ T4304] debugfs: Directory 'hsr0' with parent 'hsr' already present! [ 84.264740][ T4304] Cannot create hsr debugfs directory [ 85.836429][ T23] Bluetooth: hci0: command 0x0409 tx timeout [ 86.755218][ T154] netdevsim netdevsim0 netdevsim2 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 86.893550][ T154] netdevsim netdevsim0 netdevsim1 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 86.966088][ T154] netdevsim netdevsim0 netdevsim0 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 87.915200][ T4272] Bluetooth: hci0: command 0x041b tx timeout [ 87.970759][ T4304] netdevsim netdevsim0 netdevsim0: renamed from eth0 [ 87.984713][ T4304] netdevsim netdevsim0 netdevsim1: renamed from eth1 [ 88.014068][ T4304] netdevsim netdevsim0 netdevsim2: renamed from eth2 [ 88.025700][ T4304] netdevsim netdevsim0 netdevsim3: renamed from eth3 [ 88.152632][ T4304] 8021q: adding VLAN 0 to HW filter on device bond0 [ 88.167568][ T1281] IPv6: ADDRCONF(NETDEV_CHANGE): veth1: link becomes ready [ 88.176239][ T1281] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 88.204272][ T4304] 8021q: adding VLAN 0 to HW filter on device team0 [ 88.215685][ T155] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bridge: link becomes ready [ 88.226504][ T155] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 88.236597][ T155] bridge0: port 1(bridge_slave_0) entered blocking state [ 88.243728][ T155] bridge0: port 1(bridge_slave_0) entered forwarding state [ 88.252401][ T155] IPv6: ADDRCONF(NETDEV_CHANGE): bridge0: link becomes ready [ 88.264242][ T4285] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bridge: link becomes ready [ 88.274112][ T4285] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 88.283502][ T4285] bridge0: port 2(bridge_slave_1) entered blocking state [ 88.291164][ T4285] bridge0: port 2(bridge_slave_1) entered forwarding state [ 88.319414][ T4285] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bond: link becomes ready [ 88.330681][ T4285] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bond: link becomes ready [ 88.343437][ T1281] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_team: link becomes ready [ 88.354020][ T1281] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 88.363396][ T1281] IPv6: ADDRCONF(NETDEV_CHANGE): team0: link becomes ready [ 88.374412][ T4285] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_team: link becomes ready [ 88.383508][ T4285] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 88.414341][ T155] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_hsr: link becomes ready [ 88.425772][ T155] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 88.473108][ T4304] hsr0: Slave B (hsr_slave_1) is not up; please bring it up to get a fully working HSR network [ 88.484746][ T4304] IPv6: ADDRCONF(NETDEV_CHANGE): hsr0: link becomes ready [ 88.493042][ T155] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_hsr: link becomes ready [ 88.505836][ T155] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 88.661693][ T154] device hsr_slave_0 left promiscuous mode [ 88.690105][ T154] device hsr_slave_1 left promiscuous mode [ 88.698313][ T154] batman_adv: batadv0: Interface deactivated: batadv_slave_0 [ 88.709459][ T154] batman_adv: batadv0: Removing interface: batadv_slave_0 [ 88.720120][ T154] batman_adv: batadv0: Interface deactivated: batadv_slave_1 [ 88.731462][ T154] batman_adv: batadv0: Removing interface: batadv_slave_1 [ 88.758220][ T154] device bridge_slave_1 left promiscuous mode [ 88.765861][ T154] bridge0: port 2(bridge_slave_1) entered disabled state [ 88.789412][ T154] device bridge_slave_0 left promiscuous mode [ 88.798912][ T154] bridge0: port 1(bridge_slave_0) entered disabled state [ 88.839581][ T154] device veth1_macvtap left promiscuous mode [ 88.846332][ T154] device veth0_macvtap left promiscuous mode [ 88.852738][ T154] device veth1_vlan left promiscuous mode [ 88.859739][ T154] device veth0_vlan left promiscuous mode [ 89.129991][ T154] team0 (unregistering): Port device team_slave_1 removed [ 89.148832][ T154] team0 (unregistering): Port device team_slave_0 removed [ 89.164099][ T154] bond0 (unregistering): (slave bond_slave_1): Releasing backup interface [ 89.179947][ T154] bond0 (unregistering): (slave bond_slave_0): Releasing backup interface [ 89.246318][ T154] bond0 (unregistering): Released all slaves [ 89.288984][ T4285] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan1: link becomes ready [ 89.297772][ T4285] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan0: link becomes ready [ 89.310473][ T4304] 8021q: adding VLAN 0 to HW filter on device batadv0 [ 89.343903][ T1281] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_virt_wifi: link becomes ready [ 89.359454][ T1281] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_virt_wifi: link becomes ready [ 89.374493][ T4304] device veth0_vlan entered promiscuous mode [ 89.384083][ T1281] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_vlan: link becomes ready [ 89.393025][ T1281] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_vlan: link becomes ready [ 89.407129][ T1281] IPv6: ADDRCONF(NETDEV_CHANGE): vlan0: link becomes ready [ 89.416179][ T1281] IPv6: ADDRCONF(NETDEV_CHANGE): vlan1: link becomes ready [ 89.430173][ T4304] device veth1_vlan entered promiscuous mode [ 89.469604][ T4285] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan0: link becomes ready [ 89.478342][ T4285] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan1: link becomes ready [ 89.488838][ T4285] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_macvtap: link becomes ready [ 89.497901][ T4285] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_macvtap: link becomes ready [ 89.510967][ T4304] device veth0_macvtap entered promiscuous mode [ 89.522190][ T4304] device veth1_macvtap entered promiscuous mode [ 89.550139][ T4304] batman_adv: batadv0: Interface activated: batadv_slave_0 [ 89.558145][ T155] IPv6: ADDRCONF(NETDEV_CHANGE): macvtap0: link becomes ready [ 89.567866][ T155] IPv6: ADDRCONF(NETDEV_CHANGE): macsec0: link becomes ready [ 89.577155][ T155] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_0: link becomes ready [ 89.587620][ T155] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_batadv: link becomes ready [ 89.600701][ T4304] batman_adv: batadv0: Interface activated: batadv_slave_1 [ 89.609129][ T155] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_1: link becomes ready [ 89.619379][ T155] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_batadv: link becomes ready [ 89.634602][ T4304] netdevsim netdevsim0 netdevsim0: set [1, 0] type 2 family 0 port 6081 - 0 [ 89.643698][ T4304] netdevsim netdevsim0 netdevsim1: set [1, 0] type 2 family 0 port 6081 - 0 [ 89.654336][ T4304] netdevsim netdevsim0 netdevsim2: set [1, 0] type 2 family 0 port 6081 - 0 [ 89.663492][ T4304] netdevsim netdevsim0 netdevsim3: set [1, 0] type 2 family 0 port 6081 - 0 [ 89.744561][ T155] wlan0: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 89.759227][ T155] wlan0: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 89.769519][ T4285] IPv6: ADDRCONF(NETDEV_CHANGE): wlan0: link becomes ready 2026/10/09 04:53:06 executed programs: 2 [ 89.798169][ T4285] wlan1: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 89.807670][ T4285] wlan1: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 89.818426][ T155] IPv6: ADDRCONF(NETDEV_CHANGE): wlan1: link becomes ready [ 89.891071][ T18] [ 89.893606][ T18] ====================================================== [ 89.900662][ T18] WARNING: possible circular locking dependency detected [ 89.907734][ T18] syzkaller #0 Not tainted [ 89.912188][ T18] ------------------------------------------------------ [ 89.919247][ T18] cpuhp/1/18 is trying to acquire lock: [ 89.924827][ T18] ffff88802c9fb748 (kn->active#32){++++}-{0:0}, at: kernfs_remove_by_name_ns+0x91/0x100 [ 89.934647][ T18] [ 89.934647][ T18] but task is already holding lock: [ 89.942056][ T18] ffffffff8cfbd7e0 (cpuhp_state-down){+.+.}-{0:0}, at: cpuhp_lock_acquire+0x8/0x40 [ 89.951461][ T18] [ 89.951461][ T18] which lock already depends on the new lock. [ 89.951461][ T18] [ 89.961906][ T18] [ 89.961906][ T18] the existing dependency chain (in reverse order) is: [ 89.970970][ T18] [ 89.970970][ T18] -> #4 (cpuhp_state-down){+.+.}-{0:0}: [ 89.978771][ T18] cpuhp_lock_acquire+0x3a/0x40 [ 89.984195][ T18] cpuhp_kick_ap_work+0x7f/0x1b0 [ 89.989688][ T18] _cpu_down+0x35b/0xbb0 [ 89.994516][ T18] cpu_device_down+0x69/0xa0 [ 89.995151][ T4274] Bluetooth: hci0: command 0x040f tx timeout [ 89.999662][ T18] device_offline+0x259/0x3a0 [ 90.011115][ T18] acpi_bus_offline+0x23e/0x400 [ 90.016542][ T18] acpi_device_hotplug+0x56c/0xc60 [ 90.022230][ T18] acpi_hotplug_work_fn+0x8f/0xc0 [ 90.027828][ T18] process_one_work+0x867/0xff0 [ 90.033248][ T18] worker_thread+0xad7/0x12a0 [ 90.038490][ T18] kthread+0x42e/0x520 [ 90.043137][ T18] ret_from_fork+0x1f/0x30 [ 90.048138][ T18] [ 90.048138][ T18] -> #3 (cpu_hotplug_lock){++++}-{0:0}: [ 90.055928][ T18] percpu_down_write+0x52/0x2f0 [ 90.061350][ T18] _cpu_up+0x77/0x810 [ 90.065897][ T18] cpu_up+0x16d/0x1a0 [ 90.070454][ T18] bringup_nonboot_cpus+0x100/0x1a0 [ 90.076256][ T18] smp_init+0x3a/0x150 [ 90.080894][ T18] kernel_init_freeable+0x3bc/0x560 [ 90.086650][ T18] kernel_init+0x19/0x1b0 [ 90.091545][ T18] ret_from_fork+0x1f/0x30 [ 90.096547][ T18] [ 90.096547][ T18] -> #2 (cpu_add_remove_lock){+.+.}-{3:3}: [ 90.104591][ T18] __mutex_lock_common+0x1e5/0x2400 [ 90.110362][ T18] mutex_lock_nested+0x17/0x20 [ 90.115698][ T18] cpu_device_down+0x3a/0xa0 [ 90.120859][ T18] device_offline+0x259/0x3a0 [ 90.126094][ T18] acpi_bus_offline+0x23e/0x400 [ 90.131517][ T18] acpi_device_hotplug+0x56c/0xc60 [ 90.137211][ T18] acpi_hotplug_work_fn+0x8f/0xc0 [ 90.142808][ T18] process_one_work+0x867/0xff0 [ 90.148227][ T18] worker_thread+0xad7/0x12a0 [ 90.153534][ T18] kthread+0x42e/0x520 [ 90.158167][ T18] ret_from_fork+0x1f/0x30 [ 90.163163][ T18] [ 90.163163][ T18] -> #1 (&device->physical_node_lock){+.+.}-{3:3}: [ 90.171908][ T18] __mutex_lock_common+0x1e5/0x2400 [ 90.177689][ T18] mutex_lock_nested+0x17/0x20 [ 90.183053][ T18] acpi_companion_match+0x86/0x110 [ 90.188826][ T18] acpi_device_uevent_modalias+0x16/0x30 [ 90.195022][ T18] platform_uevent+0x38/0xb0 [ 90.200173][ T18] dev_uevent+0x3a5/0x740 [ 90.205074][ T18] kobject_uevent_env+0x465/0x890 [ 90.210658][ T18] kobject_synth_uevent+0x457/0x940 [ 90.216414][ T18] uevent_store+0x22/0x60 [ 90.221307][ T18] kernfs_fop_write_iter+0x3a8/0x500 [ 90.227156][ T18] vfs_write+0x748/0xd70 [ 90.231962][ T18] ksys_write+0x153/0x260 [ 90.236852][ T18] do_syscall_64+0x4c/0xa0 [ 90.241835][ T18] entry_SYSCALL_64_after_hwframe+0x66/0xd0 [ 90.248295][ T18] [ 90.248295][ T18] -> #0 (kn->active#32){++++}-{0:0}: [ 90.255875][ T18] __lock_acquire+0x38f7/0x7d40 [ 90.261299][ T18] lock_acquire+0x19f/0x400 [ 90.266374][ T18] __kernfs_remove+0x5da/0xcb0 [ 90.271709][ T18] kernfs_remove_by_name_ns+0x91/0x100 [ 90.277730][ T18] device_del+0x62f/0xa80 [ 90.282630][ T18] device_unregister+0x1c/0xc0 [ 90.287955][ T18] mce_cpu_pre_down+0x33f/0x540 [ 90.293367][ T18] cpuhp_invoke_callback+0x423/0x7e0 [ 90.299216][ T18] cpuhp_thread_fun+0x3b2/0x7f0 [ 90.304633][ T18] smpboot_thread_fn+0x520/0x990 [ 90.310132][ T18] kthread+0x42e/0x520 [ 90.314761][ T18] ret_from_fork+0x1f/0x30 [ 90.319748][ T18] [ 90.319748][ T18] other info that might help us debug this: [ 90.319748][ T18] [ 90.330022][ T18] Chain exists of: [ 90.330022][ T18] kn->active#32 --> cpu_hotplug_lock --> cpuhp_state-down [ 90.330022][ T18] [ 90.343115][ T18] Possible unsafe locking scenario: [ 90.343115][ T18] [ 90.350604][ T18] CPU0 CPU1 [ 90.356009][ T18] ---- ---- [ 90.361405][ T18] lock(cpuhp_state-down); [ 90.365949][ T18] lock(cpu_hotplug_lock); [ 90.373023][ T18] lock(cpuhp_state-down); [ 90.380100][ T18] lock(kn->active#32); [ 90.384406][ T18] [ 90.384406][ T18] *** DEADLOCK *** [ 90.384406][ T18] [ 90.392587][ T18] 2 locks held by cpuhp/1/18: [ 90.397306][ T18] #0: ffffffff8cfbd670 (cpu_hotplug_lock){++++}-{0:0}, at: lockdep_acquire_cpus_lock+0x5/0x30 [ 90.407732][ T18] #1: ffffffff8cfbd7e0 (cpuhp_state-down){+.+.}-{0:0}, at: cpuhp_lock_acquire+0x8/0x40 [ 90.417543][ T18] [ 90.417543][ T18] stack backtrace: [ 90.423504][ T18] CPU: 1 PID: 18 Comm: cpuhp/1 Not tainted syzkaller #0 [ 90.430509][ T18] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/24/2026 [ 90.440635][ T18] Call Trace: [ 90.443961][ T18] [ 90.446943][ T18] dump_stack_lvl+0x188/0x250 [ 90.451678][ T18] ? load_image+0x410/0x410 [ 90.456243][ T18] ? show_regs_print_info+0x20/0x20 [ 90.461490][ T18] ? print_circular_bug+0x12b/0x1a0 [ 90.466747][ T18] check_noncircular+0x2f8/0x400 [ 90.471747][ T18] ? print_deadlock_bug+0x5d0/0x5d0 [ 90.476983][ T18] ? lockdep_lock+0xf1/0x1f0 [ 90.481683][ T18] ? lockdep_hardirqs_on_prepare+0x448/0x7c0 [ 90.487721][ T18] ? mark_lock+0x94/0x320 [ 90.492091][ T18] ? _find_first_zero_bit+0xd1/0xf0 [ 90.497337][ T18] __lock_acquire+0x38f7/0x7d40 [ 90.502248][ T18] ? _raw_spin_unlock+0x40/0x40 [ 90.507406][ T18] ? __lock_acquire+0x13b3/0x7d40 [ 90.512476][ T18] ? verify_lock_unused+0x140/0x140 [ 90.517721][ T18] ? kasan_set_free_info+0x1f/0x40 [ 90.522882][ T18] ? kmem_cache_free+0x8f/0x210 [ 90.527820][ T18] ? device_unregister+0x1c/0xc0 [ 90.532803][ T18] ? kthread+0x42e/0x520 [ 90.537081][ T18] ? ret_from_fork+0x1f/0x30 [ 90.541725][ T18] lock_acquire+0x19f/0x400 [ 90.546268][ T18] ? kernfs_remove_by_name_ns+0x91/0x100 [ 90.551944][ T18] ? lockdep_hardirqs_on_prepare+0x448/0x7c0 [ 90.557969][ T18] ? read_lock_is_recursive+0x10/0x10 [ 90.563404][ T18] ? up_write+0x1b6/0x410 [ 90.567812][ T18] __kernfs_remove+0x5da/0xcb0 [ 90.572623][ T18] ? kernfs_remove_by_name_ns+0x91/0x100 [ 90.578337][ T18] ? kernfs_next_descendant_post+0x200/0x200 [ 90.584376][ T18] ? kernfs_find_ns+0x49e/0x510 [ 90.589281][ T18] kernfs_remove_by_name_ns+0x91/0x100 [ 90.594800][ T18] device_del+0x62f/0xa80 [ 90.599180][ T18] ? kill_device+0x160/0x160 [ 90.603836][ T18] device_unregister+0x1c/0xc0 [ 90.608851][ T18] mce_cpu_pre_down+0x33f/0x540 [ 90.613752][ T18] ? mce_cpu_online+0x930/0x930 [ 90.618647][ T18] cpuhp_invoke_callback+0x423/0x7e0 [ 90.623986][ T18] cpuhp_thread_fun+0x3b2/0x7f0 [ 90.628880][ T18] ? cpuhp_should_run+0xa0/0xa0 [ 90.633903][ T18] ? trace_raw_output_cpuhp_exit+0x1a0/0x1a0 [ 90.639928][ T18] ? cpuhp_should_run+0xa0/0xa0 [ 90.644831][ T18] smpboot_thread_fn+0x520/0x990 [ 90.649826][ T18] kthread+0x42e/0x520 [ 90.653937][ T18] ? cpu_report_death+0x180/0x180 [ 90.659003][ T18] ? kthread_blkcg+0xd0/0xd0 [ 90.663629][ T18] ret_from_fork+0x1f/0x30 [ 90.668096][ T18] [ 90.689401][ T19] numa_remove_cpu cpu 1 node 0: mask now 0 [ 90.695286][ T19] numa_remove_cpu cpu 1 node 1: mask now 0 [ 90.719704][ T4285] smpboot: CPU 1 is now offline [ 91.015842][ T4285] ACPI: \_SB_.CP01: Eject incomplete - status 0xf [ 91.295909][ T4285] ACPI: \_SB_.CP01: Eject incomplete - status 0xf [ 91.555925][ T4285] ACPI: \_SB_.CP01: Eject incomplete - status 0xf [ 92.075845][ T4270] Bluetooth: hci0: command 0x0419 tx timeout [ 92.235683][ T13] cfg80211: failed to load regulatory.db 2026/10/09 04:53:11 executed programs: 237 2026/10/09 04:53:16 executed programs: 536