[ 92.002239][ T10] cfg80211: failed to load regulatory.db Warning: Permanently added '10.128.1.92' (ED25519) to the list of known hosts. 2026/07/22 09:14:09 parsed 1 programs 2026/07/22 09:14:09 serving rpc on tcp://33913 [ 98.910210][ T5641] cgroup: Unknown subsys name 'net' [ 99.022912][ T5641] cgroup: Unknown subsys name 'cpuset' [ 99.032667][ T5641] cgroup: Unknown subsys name 'rlimit' Setting up swapspace version 1, size = 127995904 bytes [ 100.689238][ T5641] Adding 124996k swap on ./swap-file. Priority:0 extents:1 across:124996k [ 104.196071][ T5651] bridge0: port 1(bridge_slave_0) entered blocking state [ 104.204080][ T5651] bridge0: port 1(bridge_slave_0) entered disabled state [ 104.211939][ T5651] bridge_slave_0: entered allmulticast mode [ 104.219528][ T5651] bridge_slave_0: entered promiscuous mode [ 104.228435][ T5651] bridge0: port 2(bridge_slave_1) entered blocking state [ 104.235787][ T5651] bridge0: port 2(bridge_slave_1) entered disabled state [ 104.243211][ T5651] bridge_slave_1: entered allmulticast mode [ 104.250561][ T5651] bridge_slave_1: entered promiscuous mode [ 104.283936][ T5651] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 104.296350][ T5651] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 104.328479][ T5651] team0: Port device team_slave_0 added [ 104.337051][ T5651] team0: Port device team_slave_1 added [ 104.365377][ T5651] batman_adv: batadv0: Adding interface: batadv_slave_0 [ 104.372607][ T5651] 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 1532 would solve the problem. [ 104.399156][ T5651] batman_adv: batadv0: Not using interface batadv_slave_0 (retrying later): interface not active [ 104.413070][ T5651] batman_adv: batadv0: Adding interface: batadv_slave_1 [ 104.420134][ T5651] 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 1532 would solve the problem. [ 104.446876][ T5651] batman_adv: batadv0: Not using interface batadv_slave_1 (retrying later): interface not active [ 104.495188][ T5651] hsr_slave_0: entered promiscuous mode [ 104.502481][ T5651] hsr_slave_1: entered promiscuous mode [ 104.670832][ T5651] netdevsim netdevsim0 netdevsim0: renamed from eth0 [ 104.685050][ T5651] 8021q: adding VLAN 0 to HW filter on device netdevsim0 [ 104.693130][ T5651] netdevsim netdevsim0 netdevsim1: renamed from eth1 [ 104.704160][ T5651] 8021q: adding VLAN 0 to HW filter on device netdevsim1 [ 104.714334][ T5651] netdevsim netdevsim0 netdevsim2: renamed from eth2 [ 104.724420][ T5651] 8021q: adding VLAN 0 to HW filter on device netdevsim2 [ 104.732584][ T5651] netdevsim netdevsim0 netdevsim3: renamed from eth3 [ 104.744556][ T5651] 8021q: adding VLAN 0 to HW filter on device netdevsim3 [ 104.779317][ T5651] bridge0: port 2(bridge_slave_1) entered blocking state [ 104.787078][ T5651] bridge0: port 2(bridge_slave_1) entered forwarding state [ 104.795202][ T5651] bridge0: port 1(bridge_slave_0) entered blocking state [ 104.802458][ T5651] bridge0: port 1(bridge_slave_0) entered forwarding state [ 104.869475][ T5651] 8021q: adding VLAN 0 to HW filter on device bond0 [ 104.891443][ T146] bridge0: port 1(bridge_slave_0) entered disabled state [ 104.901019][ T146] bridge0: port 2(bridge_slave_1) entered disabled state [ 104.920665][ T5651] 8021q: adding VLAN 0 to HW filter on device team0 [ 104.935568][ T146] bridge0: port 1(bridge_slave_0) entered blocking state [ 104.942817][ T146] bridge0: port 1(bridge_slave_0) entered forwarding state [ 104.957680][ T13] bridge0: port 2(bridge_slave_1) entered blocking state [ 104.964910][ T13] bridge0: port 2(bridge_slave_1) entered forwarding state [ 105.342477][ T5651] 8021q: adding VLAN 0 to HW filter on device batadv0 [ 105.397099][ T5651] veth0_vlan: entered promiscuous mode [ 105.412975][ T5651] veth1_vlan: entered promiscuous mode [ 105.448676][ T5651] veth0_macvtap: entered promiscuous mode [ 105.460173][ T5651] veth1_macvtap: entered promiscuous mode [ 105.482437][ T5651] batman_adv: batadv0: Interface activated: batadv_slave_0 [ 105.497833][ T5651] batman_adv: batadv0: Interface activated: batadv_slave_1 [ 105.516614][ T13] netdevsim netdevsim0 netdevsim0: set [1, 0] type 2 family 0 port 6081 - 0 [ 105.526952][ T13] netdevsim netdevsim0 netdevsim1: set [1, 0] type 2 family 0 port 6081 - 0 [ 105.537914][ T13] netdevsim netdevsim0 netdevsim2: set [1, 0] type 2 family 0 port 6081 - 0 [ 105.553919][ T13] netdevsim netdevsim0 netdevsim3: set [1, 0] type 2 family 0 port 6081 - 0 [ 105.625226][ T5651] 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. [ 105.821402][ T13] netdevsim netdevsim0 netdevsim3 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 105.893994][ T13] netdevsim netdevsim0 netdevsim2 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 105.996579][ T13] netdevsim netdevsim0 netdevsim1 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 106.076844][ T13] netdevsim netdevsim0 netdevsim0 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 107.905234][ T5738] Bluetooth: hci0: unexpected cc 0x0c03 length: 249 > 1 [ 107.914316][ T5738] Bluetooth: hci0: unexpected cc 0x1003 length: 249 > 9 [ 107.923987][ T5738] Bluetooth: hci0: unexpected cc 0x1001 length: 249 > 9 [ 107.933980][ T5738] Bluetooth: hci0: unexpected cc 0x0c23 length: 249 > 4 [ 107.941836][ T5738] Bluetooth: hci0: unexpected cc 0x0c38 length: 249 > 2 [ 108.409295][ T13] bridge_slave_1: left allmulticast mode [ 108.428184][ T13] bridge_slave_1: left promiscuous mode [ 108.438280][ T13] bridge0: port 2(bridge_slave_1) entered disabled state [ 108.471245][ T13] bridge_slave_0: left allmulticast mode [ 108.476972][ T13] bridge_slave_0: left promiscuous mode [ 108.500661][ T13] bridge0: port 1(bridge_slave_0) entered disabled state [ 108.838526][ T13] bond0 (unregistering): (slave bond_slave_0): Releasing backup interface [ 108.852878][ T13] bond0 (unregistering): (slave bond_slave_1): Releasing backup interface [ 108.863785][ T13] bond0 (unregistering): Released all slaves [ 108.994749][ T13] hsr_slave_0: left promiscuous mode [ 109.001090][ T13] hsr_slave_1: left promiscuous mode [ 109.007518][ T13] batman_adv: batadv0: Interface deactivated: batadv_slave_0 [ 109.015728][ T13] batman_adv: batadv0: Removing interface: batadv_slave_0 [ 109.024757][ T13] batman_adv: batadv0: Interface deactivated: batadv_slave_1 [ 109.033246][ T13] batman_adv: batadv0: Removing interface: batadv_slave_1 [ 109.053223][ T13] veth1_macvtap: left promiscuous mode [ 109.059748][ T13] veth0_macvtap: left promiscuous mode [ 109.065450][ T13] veth1_vlan: left promiscuous mode [ 109.071397][ T13] veth0_vlan: left promiscuous mode [ 109.333613][ T13] team0 (unregistering): Port device team_slave_1 removed [ 109.355103][ T13] team0 (unregistering): Port device team_slave_0 removed [ 109.486327][ T5285] 8021q: adding VLAN 0 to HW filter on device eth1 [ 109.606362][ T57] wlan0: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 109.622636][ T57] wlan0: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 109.676637][ T3286] wlan1: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 109.685284][ T3286] wlan1: Creating new IBSS network, BSSID 50:50:50:50:50:50 2026/07/22 09:14:25 executed programs: 0 [ 110.685187][ T5738] Bluetooth: hci0: unexpected cc 0x0c03 length: 249 > 1 [ 110.695369][ T5738] Bluetooth: hci0: unexpected cc 0x1003 length: 249 > 9 [ 110.703816][ T5738] Bluetooth: hci0: unexpected cc 0x1001 length: 249 > 9 [ 110.712570][ T5738] Bluetooth: hci0: unexpected cc 0x0c23 length: 249 > 4 [ 110.720604][ T5738] Bluetooth: hci0: unexpected cc 0x0c38 length: 249 > 2 [ 110.963803][ T5285] 8021q: adding VLAN 0 to HW filter on device eth2 [ 111.787235][ T5285] 8021q: adding VLAN 0 to HW filter on device eth3 [ 112.323504][ T5786] bridge0: port 1(bridge_slave_0) entered blocking state [ 112.331698][ T5786] bridge0: port 1(bridge_slave_0) entered disabled state [ 112.340125][ T5786] bridge_slave_0: entered allmulticast mode [ 112.348267][ T5786] bridge_slave_0: entered promiscuous mode [ 112.359973][ T5786] bridge0: port 2(bridge_slave_1) entered blocking state [ 112.367297][ T5786] bridge0: port 2(bridge_slave_1) entered disabled state [ 112.374956][ T5786] bridge_slave_1: entered allmulticast mode [ 112.383266][ T5786] bridge_slave_1: entered promiscuous mode [ 112.428133][ T5786] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 112.441579][ T5786] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 112.489845][ T5786] team0: Port device team_slave_0 added [ 112.499325][ T5786] team0: Port device team_slave_1 added [ 112.538425][ T5786] batman_adv: batadv0: Adding interface: batadv_slave_0 [ 112.545686][ T5786] 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 1532 would solve the problem. [ 112.573306][ T5786] batman_adv: batadv0: Not using interface batadv_slave_0 (retrying later): interface not active [ 112.587144][ T5285] 8021q: adding VLAN 0 to HW filter on device eth4 [ 112.595176][ T5786] batman_adv: batadv0: Adding interface: batadv_slave_1 [ 112.604199][ T5786] 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 1532 would solve the problem. [ 112.630281][ T5786] batman_adv: batadv0: Not using interface batadv_slave_1 (retrying later): interface not active [ 112.693339][ T5786] hsr_slave_0: entered promiscuous mode [ 112.700524][ T5786] hsr_slave_1: entered promiscuous mode [ 112.800896][ T5738] Bluetooth: hci0: command tx timeout [ 113.464345][ T5786] netdevsim netdevsim0 netdevsim0: renamed from eth0 [ 113.482845][ T5786] 8021q: adding VLAN 0 to HW filter on device netdevsim0 [ 113.492383][ T5786] netdevsim netdevsim0 netdevsim1: renamed from eth1 [ 113.506250][ T5786] 8021q: adding VLAN 0 to HW filter on device netdevsim1 [ 113.515168][ T5786] netdevsim netdevsim0 netdevsim2: renamed from eth2 [ 113.531646][ T5786] 8021q: adding VLAN 0 to HW filter on device netdevsim2 [ 113.540687][ T5786] netdevsim netdevsim0 netdevsim3: renamed from eth3 [ 113.553704][ T5786] 8021q: adding VLAN 0 to HW filter on device netdevsim3 [ 113.656187][ T5786] 8021q: adding VLAN 0 to HW filter on device bond0 [ 113.686558][ T5786] 8021q: adding VLAN 0 to HW filter on device team0 [ 113.702987][ T146] bridge0: port 1(bridge_slave_0) entered blocking state [ 113.710220][ T146] bridge0: port 1(bridge_slave_0) entered forwarding state [ 113.730618][ T146] bridge0: port 2(bridge_slave_1) entered blocking state [ 113.737853][ T146] bridge0: port 2(bridge_slave_1) entered forwarding state [ 114.295319][ T5786] 8021q: adding VLAN 0 to HW filter on device batadv0 [ 114.363455][ T5786] veth0_vlan: entered promiscuous mode [ 114.377500][ T5786] veth1_vlan: entered promiscuous mode [ 114.433800][ T5786] veth0_macvtap: entered promiscuous mode [ 114.447341][ T5786] veth1_macvtap: entered promiscuous mode [ 114.482741][ T5786] batman_adv: batadv0: Interface activated: batadv_slave_0 [ 114.503930][ T5786] batman_adv: batadv0: Interface activated: batadv_slave_1 [ 114.522004][ T3332] netdevsim netdevsim0 netdevsim0: set [1, 0] type 2 family 0 port 6081 - 0 [ 114.544847][ T3332] netdevsim netdevsim0 netdevsim1: set [1, 0] type 2 family 0 port 6081 - 0 [ 114.566003][ T3332] netdevsim netdevsim0 netdevsim2: set [1, 0] type 2 family 0 port 6081 - 0 [ 114.578558][ T3332] netdevsim netdevsim0 netdevsim3: set [1, 0] type 2 family 0 port 6081 - 0 [ 114.656462][ T146] wlan0: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 114.669626][ T146] wlan0: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 114.717267][ T3332] wlan1: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 114.728210][ T3332] wlan1: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 114.811239][ T5891] block nbd0: not configured, cannot reconfigure [ 114.879404][ T5738] Bluetooth: hci0: command tx timeout [ 115.071604][ T4940] block nbd0: Receive control failed (result -32) [ 115.080937][ T50] block nbd0: Receive control failed (result -32) [ 115.087507][ T5738] block nbd0: Receive control failed (result -32) [ 115.151587][ T5904] nbd0: detected capacity change from 0 to 87 [ 115.162287][ T5904] block nbd0: reconnected socket [ 115.335606][ T5904] [ 115.338011][ T5904] ====================================================== [ 115.345054][ T5904] WARNING: possible circular locking dependency detected [ 115.352129][ T5904] syzkaller #0 Not tainted [ 115.356580][ T5904] ------------------------------------------------------ [ 115.363624][ T5904] syz.0.18/5904 is trying to acquire lock: [ 115.369467][ T5904] ffff8880278dbd68 (&q->elevator_lock){+.+.}-{4:4}, at: elevator_change+0x1af/0x480 [ 115.378965][ T5904] [ 115.378965][ T5904] but task is already holding lock: [ 115.386363][ T5904] ffff8880278db840 (&q->q_usage_counter(io)#50){++++}-{0:0}, at: elevator_change+0x194/0x480 [ 115.396621][ T5904] [ 115.396621][ T5904] which lock already depends on the new lock. [ 115.396621][ T5904] [ 115.407148][ T5904] [ 115.407148][ T5904] the existing dependency chain (in reverse order) is: [ 115.416194][ T5904] [ 115.416194][ T5904] -> #6 (&q->q_usage_counter(io)#50){++++}-{0:0}: [ 115.424835][ T5904] blk_alloc_queue+0x544/0x690 [ 115.430150][ T5904] __blk_mq_alloc_disk+0x194/0x390 [ 115.435821][ T5904] nbd_dev_add+0x494/0xb60 [ 115.440787][ T5904] nbd_init+0x15f/0x1e0 [ 115.445494][ T5904] do_one_initcall+0x250/0x870 [ 115.450809][ T5904] do_initcall_level+0x10a/0x1a0 [ 115.456291][ T5904] do_initcalls+0x59/0xa0 [ 115.461199][ T5904] kernel_init_freeable+0x29d/0x3e0 [ 115.466973][ T5904] kernel_init+0x1d/0x1d0 [ 115.471850][ T5904] ret_from_fork+0x514/0xb70 [ 115.476992][ T5904] ret_from_fork_asm+0x1a/0x30 [ 115.482294][ T5904] [ 115.482294][ T5904] -> #5 (fs_reclaim){+.+.}-{0:0}: [ 115.489524][ T5904] fs_reclaim_acquire+0x71/0x100 [ 115.495008][ T5904] __kmalloc_cache_node_noprof+0x66/0x630 [ 115.501279][ T5904] create_worker+0x112/0x7b0 [ 115.506526][ T5904] workqueue_prepare_cpu+0xe4/0x170 [ 115.512614][ T5904] cpuhp_invoke_callback+0x434/0x810 [ 115.518461][ T5904] _cpu_up+0x2ce/0x5b0 [ 115.523079][ T5904] cpu_up+0x1d2/0x220 [ 115.527606][ T5904] cpuhp_bringup_mask+0xb2/0x1a0 [ 115.533096][ T5904] cpuhp_bringup_cpus_parallel+0x109/0x120 [ 115.539454][ T5904] bringup_nonboot_cpus+0x17/0x30 [ 115.545111][ T5904] smp_init+0x32/0x110 [ 115.549721][ T5904] kernel_init_freeable+0x27f/0x3e0 [ 115.555462][ T5904] kernel_init+0x1d/0x1d0 [ 115.560343][ T5904] ret_from_fork+0x514/0xb70 [ 115.565480][ T5904] ret_from_fork_asm+0x1a/0x30 [ 115.570794][ T5904] [ 115.570794][ T5904] -> #4 (cpu_hotplug_lock){++++}-{0:0}: [ 115.578546][ T5904] cpus_read_lock+0x42/0x160 [ 115.583684][ T5904] static_key_slow_inc+0x12/0x30 [ 115.589185][ T5904] nbd_genl_reconfigure+0x1301/0x1e80 [ 115.595113][ T5904] genl_family_rcv_msg_doit+0x233/0x340 [ 115.601229][ T5904] genl_rcv_msg+0x614/0x7a0 [ 115.606308][ T5904] netlink_rcv_skb+0x226/0x4a0 [ 115.611616][ T5904] genl_rcv+0x28/0x40 [ 115.616141][ T5904] netlink_unicast+0x7bb/0x940 [ 115.621801][ T5904] netlink_sendmsg+0x813/0xb40 [ 115.627115][ T5904] sock_sendmsg_nosec+0x13a/0x180 [ 115.632687][ T5904] ____sys_sendmsg+0x54e/0x850 [ 115.637996][ T5904] ___sys_sendmsg+0x2a5/0x360 [ 115.643220][ T5904] __x64_sys_sendmsg+0x1b1/0x290 [ 115.648703][ T5904] do_syscall_64+0x174/0x580 [ 115.653837][ T5904] entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 115.660282][ T5904] [ 115.660282][ T5904] -> #3 (&nsock->tx_lock){+.+.}-{4:4}: [ 115.668071][ T5904] __mutex_lock+0x19d/0x1550 [ 115.673221][ T5904] nbd_queue_rq+0x373/0x1150 [ 115.678482][ T5904] blk_mq_dispatch_rq_list+0x499/0x1990 [ 115.684574][ T5904] __blk_mq_sched_dispatch_requests+0xd36/0x1580 [ 115.691475][ T5904] blk_mq_sched_dispatch_requests+0xd7/0x190 [ 115.698003][ T5904] blk_mq_run_work_fn+0x16c/0x300 [ 115.703568][ T5904] process_scheduled_works+0xa8e/0x14e0 [ 115.709653][ T5904] worker_thread+0xa47/0xfb0 [ 115.714804][ T5904] kthread+0x388/0x470 [ 115.719434][ T5904] ret_from_fork+0x514/0xb70 [ 115.724585][ T5904] ret_from_fork_asm+0x1a/0x30 [ 115.729982][ T5904] [ 115.729982][ T5904] -> #2 (&cmd->lock){+.+.}-{4:4}: [ 115.737219][ T5904] __mutex_lock+0x19d/0x1550 [ 115.742356][ T5904] nbd_queue_rq+0xc1/0x1150 [ 115.747409][ T5904] blk_mq_dispatch_rq_list+0x499/0x1990 [ 115.753501][ T5904] __blk_mq_sched_dispatch_requests+0xd36/0x1580 [ 115.760376][ T5904] blk_mq_sched_dispatch_requests+0xd7/0x190 [ 115.766908][ T5904] blk_mq_run_work_fn+0x16c/0x300 [ 115.772477][ T5904] process_scheduled_works+0xa8e/0x14e0 [ 115.778662][ T5904] worker_thread+0xa47/0xfb0 [ 115.783801][ T5904] kthread+0x388/0x470 [ 115.788415][ T5904] ret_from_fork+0x514/0xb70 [ 115.793547][ T5904] ret_from_fork_asm+0x1a/0x30 [ 115.798935][ T5904] [ 115.798935][ T5904] -> #1 (set->srcu){.+.+}-{0:0}: [ 115.806083][ T5904] __synchronize_srcu+0xc9/0x2f0 [ 115.811664][ T5904] elevator_switch+0x1e8/0x7b0 [ 115.816995][ T5904] elevator_change+0x2fa/0x480 [ 115.822306][ T5904] elevator_set_default+0x375/0x440 [ 115.828058][ T5904] blk_register_queue+0x3f3/0x4e0 [ 115.833627][ T5904] __add_disk+0x6cb/0xe30 [ 115.838490][ T5904] add_disk_fwnode+0x100/0x3a0 [ 115.843799][ T5904] nbd_dev_add+0x733/0xb60 [ 115.848768][ T5904] nbd_init+0x15f/0x1e0 [ 115.853469][ T5904] do_one_initcall+0x250/0x870 [ 115.858780][ T5904] do_initcall_level+0x10a/0x1a0 [ 115.864264][ T5904] do_initcalls+0x59/0xa0 [ 115.869142][ T5904] kernel_init_freeable+0x29d/0x3e0 [ 115.874928][ T5904] kernel_init+0x1d/0x1d0 [ 115.879805][ T5904] ret_from_fork+0x514/0xb70 [ 115.884942][ T5904] ret_from_fork_asm+0x1a/0x30 [ 115.890243][ T5904] [ 115.890243][ T5904] -> #0 (&q->elevator_lock){+.+.}-{4:4}: [ 115.898084][ T5904] __lock_acquire+0x1520/0x2cf0 [ 115.903484][ T5904] lock_acquire+0x106/0x350 [ 115.908536][ T5904] __mutex_lock+0x19d/0x1550 [ 115.913670][ T5904] elevator_change+0x1af/0x480 [ 115.918981][ T5904] elevator_set_none+0xb5/0x140 [ 115.924376][ T5904] blk_mq_update_nr_hw_queues+0x5ef/0x19f0 [ 115.930739][ T5904] nbd_start_device+0x189/0xb30 [ 115.936142][ T5904] nbd_genl_connect+0x1597/0x1c10 [ 115.941727][ T5904] genl_family_rcv_msg_doit+0x233/0x340 [ 115.947827][ T5904] genl_rcv_msg+0x614/0x7a0 [ 115.952873][ T5904] netlink_rcv_skb+0x226/0x4a0 [ 115.958174][ T5904] genl_rcv+0x28/0x40 [ 115.962694][ T5904] netlink_unicast+0x7bb/0x940 [ 115.968007][ T5904] netlink_sendmsg+0x813/0xb40 [ 115.973305][ T5904] sock_sendmsg_nosec+0x13a/0x180 [ 115.978872][ T5904] ____sys_sendmsg+0x54e/0x850 [ 115.984193][ T5904] ___sys_sendmsg+0x2a5/0x360 [ 115.989584][ T5904] __x64_sys_sendmsg+0x1b1/0x290 [ 115.995086][ T5904] do_syscall_64+0x174/0x580 [ 116.000218][ T5904] entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 116.006665][ T5904] [ 116.006665][ T5904] other info that might help us debug this: [ 116.006665][ T5904] [ 116.016911][ T5904] Chain exists of: [ 116.016911][ T5904] &q->elevator_lock --> fs_reclaim --> &q->q_usage_counter(io)#50 [ 116.016911][ T5904] [ 116.030696][ T5904] Possible unsafe locking scenario: [ 116.030696][ T5904] [ 116.038163][ T5904] CPU0 CPU1 [ 116.043545][ T5904] ---- ---- [ 116.048923][ T5904] lock(&q->q_usage_counter(io)#50); [ 116.054319][ T5904] lock(fs_reclaim); [ 116.060835][ T5904] lock(&q->q_usage_counter(io)#50); [ 116.068839][ T5904] lock(&q->elevator_lock); [ 116.073451][ T5904] [ 116.073451][ T5904] *** DEADLOCK *** [ 116.073451][ T5904] [ 116.081645][ T5904] 6 locks held by syz.0.18/5904: [ 116.086620][ T5904] #0: ffffffff9009d8a8 (cb_lock){++++}-{4:4}, at: genl_rcv+0x19/0x40 [ 116.094935][ T5904] #1: ffffffff9009d6e0 (genl_mutex){+.+.}-{4:4}, at: genl_rcv_msg+0x10b/0x7a0 [ 116.103934][ T5904] #2: ffff8880278b71c0 (&set->update_nr_hwq_lock){++++}-{4:4}, at: blk_mq_update_nr_hw_queues+0xab/0x19f0 [ 116.115628][ T5904] #3: ffff8880278b70d0 (&set->tag_list_lock){+.+.}-{4:4}, at: blk_mq_update_nr_hw_queues+0xbe/0x19f0 [ 116.126636][ T5904] #4: ffff8880278db840 (&q->q_usage_counter(io)#50){++++}-{0:0}, at: elevator_change+0x194/0x480 [ 116.137290][ T5904] #5: ffff8880278db878 (&q->q_usage_counter(queue)#34){+.+.}-{0:0}, at: elevator_change+0x194/0x480 [ 116.148202][ T5904] [ 116.148202][ T5904] stack backtrace: [ 116.154123][ T5904] CPU: 1 UID: 0 PID: 5904 Comm: syz.0.18 Not tainted syzkaller #0 PREEMPT(full) [ 116.154143][ T5904] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/25/2026 [ 116.154161][ T5904] Call Trace: [ 116.154169][ T5904] [ 116.154176][ T5904] dump_stack_lvl+0xe8/0x150 [ 116.154204][ T5904] print_circular_bug+0x2e1/0x300 [ 116.154222][ T5904] check_noncircular+0x12e/0x150 [ 116.154252][ T5904] __lock_acquire+0x1520/0x2cf0 [ 116.154284][ T5904] ? elevator_change+0x1af/0x480 [ 116.154304][ T5904] lock_acquire+0x106/0x350 [ 116.154325][ T5904] ? elevator_change+0x1af/0x480 [ 116.154352][ T5904] __mutex_lock+0x19d/0x1550 [ 116.154370][ T5904] ? elevator_change+0x1af/0x480 [ 116.154391][ T5904] ? rcu_is_watching+0x15/0xb0 [ 116.154420][ T5904] ? elevator_change+0x1af/0x480 [ 116.154441][ T5904] ? __pfx___mutex_lock+0x10/0x10 [ 116.154458][ T5904] ? enable_work+0x17f/0x230 [ 116.154480][ T5904] ? lockdep_hardirqs_on+0x7a/0x110 [ 116.154500][ T5904] ? __cancel_work_sync+0xf7/0x110 [ 116.154522][ T5904] ? blk_mq_cancel_work_sync+0xa5/0xe0 [ 116.154548][ T5904] elevator_change+0x1af/0x480 [ 116.154572][ T5904] elevator_set_none+0xb5/0x140 [ 116.154594][ T5904] ? __pfx_elevator_set_none+0x10/0x10 [ 116.154618][ T5904] ? xa_load+0x1db/0x210 [ 116.154639][ T5904] blk_mq_update_nr_hw_queues+0x5ef/0x19f0 [ 116.154666][ T5904] ? kernfs_add_one+0x480/0x5e0 [ 116.154693][ T5904] ? nbd_start_device+0x17d/0xb30 [ 116.154727][ T5904] ? __pfx_blk_mq_update_nr_hw_queues+0x10/0x10 [ 116.154758][ T5904] ? sysfs_add_file_mode_ns+0x258/0x300 [ 116.154780][ T5904] nbd_start_device+0x189/0xb30 [ 116.154808][ T5904] ? device_create_file+0xf4/0x1b0 [ 116.154835][ T5904] nbd_genl_connect+0x1597/0x1c10 [ 116.154864][ T5904] ? __pfx_nbd_genl_connect+0x10/0x10 [ 116.154890][ T5904] ? rcu_is_watching+0x15/0xb0 [ 116.154915][ T5904] ? trace_kmalloc+0x2a/0xf0 [ 116.154935][ T5904] ? __kmalloc_noprof+0x396/0x720 [ 116.154957][ T5904] ? __nla_parse+0x40/0x60 [ 116.154980][ T5904] ? genl_family_rcv_msg_attrs_parse+0x20b/0x2f0 [ 116.155005][ T5904] ? genl_family_rcv_msg_attrs_parse+0x265/0x2f0 [ 116.155031][ T5904] genl_family_rcv_msg_doit+0x233/0x340 [ 116.155057][ T5904] ? __pfx_genl_family_rcv_msg_doit+0x10/0x10 [ 116.155085][ T5904] ? __lock_acquire+0x683/0x2cf0 [ 116.155110][ T5904] genl_rcv_msg+0x614/0x7a0 [ 116.155135][ T5904] ? __pfx_genl_rcv_msg+0x10/0x10 [ 116.155157][ T5904] ? __pfx_nbd_genl_connect+0x10/0x10 [ 116.155187][ T5904] netlink_rcv_skb+0x226/0x4a0 [ 116.155206][ T5904] ? __pfx_genl_rcv_msg+0x10/0x10 [ 116.155228][ T5904] ? __pfx_netlink_rcv_skb+0x10/0x10 [ 116.155250][ T5904] ? down_read+0x2be/0x330 [ 116.155270][ T5904] genl_rcv+0x28/0x40 [ 116.155290][ T5904] netlink_unicast+0x7bb/0x940 [ 116.155320][ T5904] netlink_sendmsg+0x813/0xb40 [ 116.155341][ T5904] ? __pfx_netlink_sendmsg+0x10/0x10 [ 116.155358][ T5904] ? filemap_map_pages+0x1ccc/0x2090 [ 116.155379][ T5904] ? aa_sock_msg_perm+0xf1/0x1b0 [ 116.155397][ T5904] ? __pfx_netlink_sendmsg+0x10/0x10 [ 116.155414][ T5904] sock_sendmsg_nosec+0x13a/0x180 [ 116.155437][ T5904] ____sys_sendmsg+0x54e/0x850 [ 116.155456][ T5904] ? __pfx_____sys_sendmsg+0x10/0x10 [ 116.155476][ T5904] ? import_iovec+0x73/0xa0 [ 116.155501][ T5904] ___sys_sendmsg+0x2a5/0x360 [ 116.155519][ T5904] ? __pfx____sys_sendmsg+0x10/0x10 [ 116.155537][ T5904] ? futex_wake+0x522/0x5f0 [ 116.155568][ T5904] ? __pfx_do_futex+0x10/0x10 [ 116.155595][ T5904] __x64_sys_sendmsg+0x1b1/0x290 [ 116.155613][ T5904] ? __pfx___x64_sys_sendmsg+0x10/0x10 [ 116.155637][ T5904] ? entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 116.155654][ T5904] do_syscall_64+0x174/0x580 [ 116.155671][ T5904] ? trace_irq_disable+0x3b/0x140 [ 116.155691][ T5904] ? clear_bhb_loop+0x40/0x90 [ 116.155716][ T5904] entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 116.155733][ T5904] RIP: 0033:0x7fc91439de99 [ 116.155758][ T5904] Code: ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 00 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 e8 ff ff ff f7 d8 64 89 01 48 [ 116.155772][ T5904] RSP: 002b:00007ffe75b995b8 EFLAGS: 00000246 ORIG_RAX: 000000000000002e [ 116.155789][ T5904] RAX: ffffffffffffffda RBX: 00007fc914625fa0 RCX: 00007fc91439de99 [ 116.155801][ T5904] RDX: 0000000000000004 RSI: 0000200000001ac0 RDI: 0000000000000009 [ 116.155812][ T5904] RBP: 00007fc914433eaf R08: 0000000000000000 R09: 0000000000000000 [ 116.155822][ T5904] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 [ 116.155832][ T5904] R13: 00007fc914625fac R14: 00007fc914625fa0 R15: 00007fc914625fa0 [ 116.155851][ T5904] [ 116.720209][ T5901] block nbd1: Receive control failed (result -32) [ 116.727011][ T4940] block nbd1: Receive control failed (result -32) [ 116.727680][ T5738] block nbd1: Receive control failed (result -32) [ 116.740697][ T50] block nbd0: Receive control failed (result -104) [ 116.765382][ T5919] block nbd0: reconnected socket 2026/07/22 09:14:31 executed programs: 4 [ 116.960866][ T5916] Bluetooth: hci0: command tx timeout [ 116.979186][ T5901] block nbd2: Receive control failed (result -32) [ 116.992744][ T4940] block nbd2: Receive control failed (result -32) [ 116.992748][ T5738] block nbd2: Receive control failed (result -32) [ 117.006307][ T50] block nbd0: Receive control failed (result -32) [ 117.041315][ T5934] block nbd0: reconnected socket [ 117.279458][ T5901] block nbd3: Receive control failed (result -32) [ 117.280167][ T5738] block nbd3: Receive control failed (result -32) [ 117.286022][ T4940] block nbd3: Receive control failed (result -32) [ 117.293566][ T50] block nbd0: Receive control failed (result -32) [ 117.324644][ T5936] block nbd0: reconnected socket [ 117.540547][ T5901] block nbd4: Receive control failed (result -32) [ 117.540834][ T5738] block nbd4: Receive control failed (result -32) [ 117.553762][ T50] block nbd0: Receive control failed (result -32) [ 117.560286][ T4940] block nbd4: Receive control failed (result -32) [ 117.583302][ T5937] block nbd0: reconnected socket [ 117.819553][ T5901] block nbd5: Receive control failed (result -32) [ 117.820184][ T50] block nbd5: Receive control failed (result -32) [ 117.832783][ T4940] block nbd5: Receive control failed (result -32) [ 117.839652][ T5738] block nbd0: Receive control failed (result -32) [ 117.862571][ T5938] block nbd0: reconnected socket [ 118.129288][ T5901] block nbd6: Receive control failed (result -32) [ 118.130712][ T4940] block nbd6: Receive control failed (result -32) [ 118.135885][ T50] block nbd6: Receive control failed (result -32) [ 118.143263][ T5738] block nbd0: Receive control failed (result -32) [ 118.172204][ T5939] block nbd0: reconnected socket [ 118.409559][ T5738] block nbd0: Receive control failed (result -32) [ 118.410961][ T5901] block nbd7: Receive control failed (result -32) [ 118.416079][ T4940] block nbd7: Receive control failed (result -32) [ 118.416158][ T50] block nbd7: Receive control failed (result -32) [ 118.453976][ T5940] block nbd0: reconnected socket [ 118.699243][ T4940] block nbd8: Receive control failed (result -32) [ 118.706734][ T5738] block nbd8: Receive control failed (result -32) [ 118.707630][ T50] block nbd8: Receive control failed (result -32) [ 118.713275][ T5901] block nbd0: Receive control failed (result -32) [ 118.741273][ T5941] block nbd0: reconnected socket [ 118.969605][ T4940] block nbd9: Receive control failed (result -32) [ 118.976939][ T50] block nbd9: Receive control failed (result -32) [ 118.983722][ T5901] block nbd0: Receive control failed (result -32) [ 118.984420][ T5738] block nbd9: Receive control failed (result -32) [ 119.014545][ T5942] block nbd0: reconnected socket [ 119.039034][ T50] Bluetooth: hci0: command tx timeout [ 119.309928][ T4940] block nbd10: Receive control failed (result -32) [ 119.310063][ T5901] block nbd10: Receive control failed (result -32) [ 119.316573][ T50] block nbd10: Receive control failed (result -32) [ 119.329727][ T5738] block nbd0: Receive control failed (result -32) [ 119.356191][ T5943] block nbd0: reconnected socket [ 119.520539][ T1613] block nbd0: Connection timed out, retrying (1/3 alive) [ 119.527749][ T1613] block nbd0: Connection timed out, retrying (1/3 alive) [ 119.639244][ T5901] block nbd11: Receive control failed (result -32) [ 119.646541][ T5738] block nbd0: Receive control failed (result -104) [ 119.647388][ T4940] block nbd11: Receive control failed (result -32) [ 119.659906][ T50] block nbd11: Receive control failed (result -32) [ 119.681755][ T5945] block nbd0: reconnected socket [ 119.939273][ T5901] block nbd12: Receive control failed (result -32) [ 119.946892][ T4940] block nbd0: Receive control failed (result -32) [ 119.953446][ T5738] block nbd12: Receive control failed (result -32) [ 119.960069][ T50] block nbd12: Receive control failed (result -32) [ 119.974946][ T5946] block nbd0: reconnected socket [ 120.229198][ T5901] block nbd13: Receive control failed (result -32) [ 120.230505][ T4940] block nbd13: Receive control failed (result -32) [ 120.242578][ T5738] block nbd13: Receive control failed (result -32) [ 120.250048][ T50] block nbd0: Receive control failed (result -32) [ 120.270993][ T5947] block nbd0: reconnected socket [ 120.539278][ T5901] block nbd14: Receive control failed (result -32) [ 120.540517][ T5738] block nbd14: Receive control failed (result -32) [ 120.552476][ T4940] block nbd14: Receive control failed (result -32) [ 120.561023][ T50] block nbd0: Receive control failed (result -32) [ 120.583426][ T5948] block nbd0: reconnected socket [ 120.819286][ T5901] block nbd15: Receive control failed (result -32) [ 120.820646][ T4940] block nbd15: Receive control failed (result -32) [ 120.832497][ T5738] block nbd15: Receive control failed (result -32) [ 120.839835][ T50] block nbd0: Receive control failed (result -32) [ 120.860894][ T5949] block nbd0: reconnected socket [ 121.109196][ T5901] block nbd16: Receive control failed (result -32) [ 121.110560][ T5738] block nbd16: Receive control failed (result -32) [ 121.122387][ T4940] block nbd16: Receive control failed (result -32) [ 121.129728][ T50] block nbd0: Receive control failed (result -32) [ 121.152905][ T5951] block nbd0: reconnected socket [ 121.419564][ T5901] block nbd17: Receive control failed (result -32) [ 121.421140][ T4940] block nbd17: Receive control failed (result -32) [ 121.432819][ T5738] block nbd17: Receive control failed (result -32) [ 121.440456][ T50] block nbd0: Receive control failed (result -32) [ 121.463713][ T5955] block nbd0: reconnected socket 2026/07/22 09:14:36 executed programs: 21 [ 121.729266][ T5901] block nbd18: Receive control failed (result -32) [ 121.729958][ T5738] block nbd18: Receive control failed (result -32) [ 121.742492][ T4940] block nbd18: Receive control failed (result -32) [ 121.749501][ T50] block nbd0: Receive control failed (result -32) [ 121.772307][ T5957] block nbd0: reconnected socket [ 122.059569][ T5901] block nbd19: Receive control failed (result -32) [ 122.066754][ T50] block nbd0: Receive control failed (result -32) [ 122.067288][ T4940] block nbd19: Receive control failed (result -32) [ 122.079934][ T5738] block nbd19: Receive control failed (result -32) [ 122.099790][ T5961] block nbd0: reconnected socket [ 122.359241][ T5901] block nbd20: Receive control failed (result -32) [ 122.360577][ T50] block nbd20: Receive control failed (result -32) [ 122.372557][ T5738] block nbd20: Receive control failed (result -32) [ 122.380223][ T4940] block nbd0: Receive control failed (result -32) [ 122.399674][ T5963] block nbd0: reconnected socket [ 122.669247][ T5901] block nbd21: Receive control failed (result -32) [ 122.670655][ T5738] block nbd21: Receive control failed (result -32) [ 122.682527][ T50] block nbd21: Receive control failed (result -32) [ 122.689848][ T4940] block nbd0: Receive control failed (result -32) [ 122.709468][ T5965] block nbd0: reconnected socket [ 122.959484][ T5901] block nbd22: Receive control failed (result -32) [ 122.959501][ T5738] block nbd22: Receive control failed (result -32) [ 122.959674][ T50] block nbd22: Receive control failed (result -32) [ 122.979337][ T4940] block nbd0: Receive control failed (result -32) [ 122.998412][ T5967] block nbd0: reconnected socket [ 123.249216][ T5738] block nbd23: Receive control failed (result -32) [ 123.255849][ T50] block nbd0: Receive control failed (result -32) [ 123.262414][ T5901] block nbd23: Receive control failed (result -32) [ 123.268999][ T4940] block nbd23: Receive control failed (result -32) [ 123.290361][ T5969] block nbd0: reconnected socket [ 123.539180][ T50] block nbd24: Receive control failed (result -32) [ 123.539846][ T5738] block nbd24: Receive control failed (result -32) [ 123.547216][ T4940] block nbd0: Receive control failed (result -32) [ 123.552440][ T5901] block nbd24: Receive control failed (result -32) [ 123.579973][ T5971] block nbd0: reconnected socket [ 123.840704][ T5944] block nbd0: Connection timed out, retrying (1/3 alive) [ 123.848068][ T5944] block nbd0: Connection timed out, retrying (1/3 alive) [ 123.855897][ T50] block nbd25: Receive control failed (result -32) [ 123.863638][ T4940] block nbd25: Receive control failed (result -32) [ 123.870263][ T5738] block nbd25: Receive control failed (result -32) [ 123.875404][ T5901] block nbd0: Receive control failed (result -104) [ 123.897317][ T5973] block nbd0: reconnected socket [ 124.159244][ T50] block nbd26: Receive control failed (result -32) [ 124.166436][ T4940] block nbd26: Receive control failed (result -32) [ 124.166524][ T5901] block nbd0: Receive control failed (result -32) [ 124.173228][ T5738] block nbd26: Receive control failed (result -32) [ 124.201924][ T5977] block nbd0: reconnected socket [ 124.459412][ T50] block nbd27: Receive control failed (result -32) [ 124.459431][ T5901] block nbd27: Receive control failed (result -32) [ 124.466091][ T4940] block nbd27: Receive control failed (result -32) [ 124.479310][ T5738] block nbd0: Receive control failed (result -32) [ 124.502274][ T5979] block nbd0: reconnected socket [ 124.779267][ T5901] block nbd28: Receive control failed (result -32) [ 124.779851][ T50] block nbd28: Receive control failed (result -32) [ 124.792732][ T4940] block nbd0: Receive control failed (result -32) [ 124.799278][ T5738] block nbd28: Receive control failed (result -32) [ 124.818642][ T5981] block nbd0: reconnected socket [ 125.069239][ T5901] block nbd29: Receive control failed (result -32) [ 125.076570][ T50] block nbd29: Receive control failed (result -32) [ 125.083209][ T4940] block nbd29: Receive control failed (result -32) [ 125.089914][ T5738] block nbd0: Receive control failed (result -32) [ 125.109386][ T5983] block nbd0: reconnected socket