Warning: Permanently added '10.128.1.67' (ED25519) to the list of known hosts. 2026/07/22 10:32:00 parsed 1 programs 2026/07/22 10:32:00 serving rpc on tcp://39995 [ 80.567722][ T5636] cgroup: Unknown subsys name 'net' [ 80.689484][ T5636] cgroup: Unknown subsys name 'cpuset' [ 80.698180][ T5636] cgroup: Unknown subsys name 'rlimit' Setting up swapspace version 1, size = 127995904 bytes [ 82.089670][ T5636] Adding 124996k swap on ./swap-file. Priority:0 extents:1 across:124996k [ 85.171672][ T5651] bridge0: port 1(bridge_slave_0) entered blocking state [ 85.179432][ T5651] bridge0: port 1(bridge_slave_0) entered disabled state [ 85.186720][ T5651] bridge_slave_0: entered allmulticast mode [ 85.194158][ T5651] bridge_slave_0: entered promiscuous mode [ 85.203749][ T5651] bridge0: port 2(bridge_slave_1) entered blocking state [ 85.210985][ T5651] bridge0: port 2(bridge_slave_1) entered disabled state [ 85.218369][ T5651] bridge_slave_1: entered allmulticast mode [ 85.225575][ T5651] bridge_slave_1: entered promiscuous mode [ 85.252497][ T5651] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 85.263886][ T5651] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 85.290780][ T5651] team0: Port device team_slave_0 added [ 85.298241][ T5651] team0: Port device team_slave_1 added [ 85.324020][ T5651] batman_adv: batadv0: Adding interface: batadv_slave_0 [ 85.331470][ 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. [ 85.358128][ T5651] batman_adv: batadv0: Not using interface batadv_slave_0 (retrying later): interface not active [ 85.370925][ T5651] batman_adv: batadv0: Adding interface: batadv_slave_1 [ 85.378435][ 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. [ 85.404452][ T5651] batman_adv: batadv0: Not using interface batadv_slave_1 (retrying later): interface not active [ 85.443915][ T5651] hsr_slave_0: entered promiscuous mode [ 85.450758][ T5651] hsr_slave_1: entered promiscuous mode [ 85.587841][ T5651] netdevsim netdevsim0 netdevsim0: renamed from eth0 [ 85.601377][ T5651] 8021q: adding VLAN 0 to HW filter on device netdevsim0 [ 85.610488][ T5651] netdevsim netdevsim0 netdevsim1: renamed from eth1 [ 85.621111][ T5651] 8021q: adding VLAN 0 to HW filter on device netdevsim1 [ 85.629125][ T5651] netdevsim netdevsim0 netdevsim2: renamed from eth2 [ 85.641461][ T5651] 8021q: adding VLAN 0 to HW filter on device netdevsim2 [ 85.652193][ T5651] netdevsim netdevsim0 netdevsim3: renamed from eth3 [ 85.663845][ T5651] 8021q: adding VLAN 0 to HW filter on device netdevsim3 [ 85.693816][ T5651] bridge0: port 2(bridge_slave_1) entered blocking state [ 85.701477][ T5651] bridge0: port 2(bridge_slave_1) entered forwarding state [ 85.709536][ T5651] bridge0: port 1(bridge_slave_0) entered blocking state [ 85.716818][ T5651] bridge0: port 1(bridge_slave_0) entered forwarding state [ 85.773097][ T5651] 8021q: adding VLAN 0 to HW filter on device bond0 [ 85.790824][ T1169] bridge0: port 1(bridge_slave_0) entered disabled state [ 85.800162][ T1169] bridge0: port 2(bridge_slave_1) entered disabled state [ 85.817207][ T5651] 8021q: adding VLAN 0 to HW filter on device team0 [ 85.830482][ T1169] bridge0: port 1(bridge_slave_0) entered blocking state [ 85.837753][ T1169] bridge0: port 1(bridge_slave_0) entered forwarding state [ 85.851616][ T1169] bridge0: port 2(bridge_slave_1) entered blocking state [ 85.858758][ T1169] bridge0: port 2(bridge_slave_1) entered forwarding state [ 86.143103][ T5651] 8021q: adding VLAN 0 to HW filter on device batadv0 [ 86.203296][ T5651] veth0_vlan: entered promiscuous mode [ 86.217968][ T5651] veth1_vlan: entered promiscuous mode [ 86.248553][ T5651] veth0_macvtap: entered promiscuous mode [ 86.258162][ T5651] veth1_macvtap: entered promiscuous mode [ 86.276350][ T5651] batman_adv: batadv0: Interface activated: batadv_slave_0 [ 86.292140][ T5651] batman_adv: batadv0: Interface activated: batadv_slave_1 [ 86.307691][ T13] netdevsim netdevsim0 netdevsim0: set [1, 0] type 2 family 0 port 6081 - 0 [ 86.317209][ T13] netdevsim netdevsim0 netdevsim1: set [1, 0] type 2 family 0 port 6081 - 0 [ 86.328337][ T13] netdevsim netdevsim0 netdevsim2: set [1, 0] type 2 family 0 port 6081 - 0 [ 86.339098][ T13] netdevsim netdevsim0 netdevsim3: set [1, 0] type 2 family 0 port 6081 - 0 [ 86.407958][ 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. [ 86.557854][ T13] netdevsim netdevsim0 netdevsim3 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 86.657053][ T13] netdevsim netdevsim0 netdevsim2 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 86.744130][ T13] netdevsim netdevsim0 netdevsim1 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 86.867319][ T13] netdevsim netdevsim0 netdevsim0 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 87.302020][ T4944] Bluetooth: hci0: unexpected cc 0x0c03 length: 249 > 1 [ 87.311797][ T4944] Bluetooth: hci0: unexpected cc 0x1003 length: 249 > 9 [ 87.325441][ T4944] Bluetooth: hci0: unexpected cc 0x1001 length: 249 > 9 [ 87.334758][ T4944] Bluetooth: hci0: unexpected cc 0x0c23 length: 249 > 4 [ 87.342807][ T4944] Bluetooth: hci0: unexpected cc 0x0c38 length: 249 > 2 [ 88.520912][ T1169] wlan0: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 88.529361][ T1169] wlan0: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 88.564238][ T456] wlan1: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 88.574055][ T456] wlan1: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 89.538355][ T13] bridge_slave_1: left allmulticast mode [ 89.545984][ T13] bridge_slave_1: left promiscuous mode [ 89.553295][ T13] bridge0: port 2(bridge_slave_1) entered disabled state [ 89.568877][ T13] bridge_slave_0: left allmulticast mode [ 89.574607][ T13] bridge_slave_0: left promiscuous mode [ 89.580943][ T13] bridge0: port 1(bridge_slave_0) entered disabled state [ 89.797509][ T13] bond0 (unregistering): (slave bond_slave_0): Releasing backup interface [ 89.810790][ T13] bond0 (unregistering): (slave bond_slave_1): Releasing backup interface [ 89.829907][ T13] bond0 (unregistering): Released all slaves [ 89.991864][ T13] hsr_slave_0: left promiscuous mode [ 90.024320][ T13] hsr_slave_1: left promiscuous mode [ 90.031222][ T13] batman_adv: batadv0: Interface deactivated: batadv_slave_0 [ 90.039184][ T13] batman_adv: batadv0: Removing interface: batadv_slave_0 [ 90.049122][ T13] batman_adv: batadv0: Interface deactivated: batadv_slave_1 [ 90.058072][ T13] batman_adv: batadv0: Removing interface: batadv_slave_1 [ 90.075120][ T13] veth1_macvtap: left promiscuous mode [ 90.081883][ T13] veth0_macvtap: left promiscuous mode [ 90.088507][ T13] veth1_vlan: left promiscuous mode [ 90.093978][ T13] veth0_vlan: left promiscuous mode 2026/07/22 10:32:13 executed programs: 0 [ 90.425232][ T13] team0 (unregistering): Port device team_slave_1 removed [ 90.452557][ T13] team0 (unregistering): Port device team_slave_0 removed [ 90.527788][ T4944] Bluetooth: hci0: unexpected cc 0x0c03 length: 249 > 1 [ 90.544796][ T4944] Bluetooth: hci0: unexpected cc 0x1003 length: 249 > 9 [ 90.555211][ T4944] Bluetooth: hci0: unexpected cc 0x1001 length: 249 > 9 [ 90.574031][ T4944] Bluetooth: hci0: unexpected cc 0x0c23 length: 249 > 4 [ 90.583908][ T4944] Bluetooth: hci0: unexpected cc 0x0c38 length: 249 > 2 [ 90.644253][ T5289] 8021q: adding VLAN 0 to HW filter on device eth1 [ 91.217342][ T5289] 8021q: adding VLAN 0 to HW filter on device eth2 [ 91.934697][ T187] cfg80211: failed to load regulatory.db [ 91.954789][ T5289] 8021q: adding VLAN 0 to HW filter on device eth3 [ 92.091349][ T5778] bridge0: port 1(bridge_slave_0) entered blocking state [ 92.102476][ T5778] bridge0: port 1(bridge_slave_0) entered disabled state [ 92.117432][ T5778] bridge_slave_0: entered allmulticast mode [ 92.125538][ T5778] bridge_slave_0: entered promiscuous mode [ 92.134111][ T5778] bridge0: port 2(bridge_slave_1) entered blocking state [ 92.143660][ T5778] bridge0: port 2(bridge_slave_1) entered disabled state [ 92.151121][ T5778] bridge_slave_1: entered allmulticast mode [ 92.159650][ T5778] bridge_slave_1: entered promiscuous mode [ 92.205445][ T5778] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 92.219451][ T5778] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 92.261940][ T5778] team0: Port device team_slave_0 added [ 92.347623][ T5778] team0: Port device team_slave_1 added [ 92.425652][ T5778] batman_adv: batadv0: Adding interface: batadv_slave_0 [ 92.444299][ T5778] 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. [ 92.477872][ T5778] batman_adv: batadv0: Not using interface batadv_slave_0 (retrying later): interface not active [ 92.533707][ T5778] batman_adv: batadv0: Adding interface: batadv_slave_1 [ 92.542287][ T5778] 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. [ 92.578540][ T5778] batman_adv: batadv0: Not using interface batadv_slave_1 (retrying later): interface not active [ 92.647192][ T4944] Bluetooth: hci0: command tx timeout [ 92.811320][ T5778] hsr_slave_0: entered promiscuous mode [ 92.818301][ T5778] hsr_slave_1: entered promiscuous mode [ 92.884646][ T5289] 8021q: adding VLAN 0 to HW filter on device eth4 [ 93.433932][ T5778] netdevsim netdevsim0 netdevsim0: renamed from eth0 [ 93.447610][ T5778] 8021q: adding VLAN 0 to HW filter on device netdevsim0 [ 93.456739][ T5778] netdevsim netdevsim0 netdevsim1: renamed from eth1 [ 93.468904][ T5778] 8021q: adding VLAN 0 to HW filter on device netdevsim1 [ 93.477951][ T5778] netdevsim netdevsim0 netdevsim2: renamed from eth2 [ 93.490326][ T5778] 8021q: adding VLAN 0 to HW filter on device netdevsim2 [ 93.498313][ T5778] netdevsim netdevsim0 netdevsim3: renamed from eth3 [ 93.509590][ T5778] 8021q: adding VLAN 0 to HW filter on device netdevsim3 [ 93.613072][ T5778] 8021q: adding VLAN 0 to HW filter on device bond0 [ 93.642449][ T5778] 8021q: adding VLAN 0 to HW filter on device team0 [ 93.658772][ T456] bridge0: port 1(bridge_slave_0) entered blocking state [ 93.665985][ T456] bridge0: port 1(bridge_slave_0) entered forwarding state [ 93.685625][ T1169] bridge0: port 2(bridge_slave_1) entered blocking state [ 93.693178][ T1169] bridge0: port 2(bridge_slave_1) entered forwarding state [ 94.416428][ T5778] 8021q: adding VLAN 0 to HW filter on device batadv0 [ 94.482905][ T5778] veth0_vlan: entered promiscuous mode [ 94.500315][ T5778] veth1_vlan: entered promiscuous mode [ 94.544706][ T5778] veth0_macvtap: entered promiscuous mode [ 94.560532][ T5778] veth1_macvtap: entered promiscuous mode [ 94.589415][ T5778] batman_adv: batadv0: Interface activated: batadv_slave_0 [ 94.609532][ T5778] batman_adv: batadv0: Interface activated: batadv_slave_1 [ 94.631355][ T13] netdevsim netdevsim0 netdevsim0: set [1, 0] type 2 family 0 port 6081 - 0 [ 94.666931][ T13] netdevsim netdevsim0 netdevsim1: set [1, 0] type 2 family 0 port 6081 - 0 [ 94.702630][ T13] netdevsim netdevsim0 netdevsim2: set [1, 0] type 2 family 0 port 6081 - 0 [ 94.719488][ T13] netdevsim netdevsim0 netdevsim3: set [1, 0] type 2 family 0 port 6081 - 0 [ 94.730173][ T4944] Bluetooth: hci0: command tx timeout [ 94.803121][ T13] wlan0: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 94.823543][ T13] wlan0: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 94.867554][ T456] wlan1: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 94.877300][ T456] wlan1: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 94.957830][ T5904] block nbd0: not configured, cannot reconfigure [ 95.191903][ T5706] block nbd0: Receive control failed (result -32) [ 95.199727][ T4944] block nbd0: Receive control failed (result -32) [ 95.206459][ T50] block nbd0: Receive control failed (result -32) [ 95.300106][ T5915] nbd0: detected capacity change from 0 to 87 [ 95.309569][ T5915] block nbd0: reconnected socket [ 95.548754][ T5915] [ 95.551351][ T5915] ====================================================== [ 95.559420][ T5915] WARNING: possible circular locking dependency detected [ 95.568556][ T5915] syzkaller #0 Not tainted [ 95.573672][ T5915] ------------------------------------------------------ [ 95.582521][ T5915] syz.0.18/5915 is trying to acquire lock: [ 95.589133][ T5915] ffff888026a07548 (&q->elevator_lock){+.+.}-{4:4}, at: elevator_change+0x1af/0x480 [ 95.598866][ T5915] [ 95.598866][ T5915] but task is already holding lock: [ 95.606733][ T5915] ffff888026a07020 (&q->q_usage_counter(io)#50){++++}-{0:0}, at: elevator_change+0x194/0x480 [ 95.617797][ T5915] [ 95.617797][ T5915] which lock already depends on the new lock. [ 95.617797][ T5915] [ 95.629276][ T5915] [ 95.629276][ T5915] the existing dependency chain (in reverse order) is: [ 95.639813][ T5915] [ 95.639813][ T5915] -> #6 (&q->q_usage_counter(io)#50){++++}-{0:0}: [ 95.651904][ T5915] blk_alloc_queue+0x544/0x690 [ 95.657359][ T5915] __blk_mq_alloc_disk+0x194/0x390 [ 95.663425][ T5915] nbd_dev_add+0x494/0xb60 [ 95.668385][ T5915] nbd_init+0x15f/0x1e0 [ 95.673082][ T5915] do_one_initcall+0x250/0x870 [ 95.678621][ T5915] do_initcall_level+0x10a/0x1a0 [ 95.684100][ T5915] do_initcalls+0x59/0xa0 [ 95.689049][ T5915] kernel_init_freeable+0x29d/0x3e0 [ 95.694796][ T5915] kernel_init+0x1d/0x1d0 [ 95.700004][ T5915] ret_from_fork+0x514/0xb70 [ 95.705294][ T5915] ret_from_fork_asm+0x1a/0x30 [ 95.710585][ T5915] [ 95.710585][ T5915] -> #5 (fs_reclaim){+.+.}-{0:0}: [ 95.717787][ T5915] fs_reclaim_acquire+0x71/0x100 [ 95.723278][ T5915] __kmalloc_cache_node_noprof+0x66/0x630 [ 95.729858][ T5915] create_worker+0x112/0x7b0 [ 95.734980][ T5915] workqueue_prepare_cpu+0xe4/0x170 [ 95.740691][ T5915] cpuhp_invoke_callback+0x434/0x810 [ 95.746520][ T5915] _cpu_up+0x2ce/0x5b0 [ 95.751119][ T5915] cpu_up+0x1d2/0x220 [ 95.755786][ T5915] cpuhp_bringup_mask+0xb2/0x1a0 [ 95.761239][ T5915] cpuhp_bringup_cpus_parallel+0x109/0x120 [ 95.767557][ T5915] bringup_nonboot_cpus+0x17/0x30 [ 95.773626][ T5915] smp_init+0x32/0x110 [ 95.778216][ T5915] kernel_init_freeable+0x27f/0x3e0 [ 95.783922][ T5915] kernel_init+0x1d/0x1d0 [ 95.788933][ T5915] ret_from_fork+0x514/0xb70 [ 95.794133][ T5915] ret_from_fork_asm+0x1a/0x30 [ 95.799508][ T5915] [ 95.799508][ T5915] -> #4 (cpu_hotplug_lock){++++}-{0:0}: [ 95.807245][ T5915] cpus_read_lock+0x42/0x160 [ 95.812539][ T5915] static_key_slow_inc+0x12/0x30 [ 95.818014][ T5915] nbd_genl_reconfigure+0x1301/0x1e80 [ 95.823939][ T5915] genl_family_rcv_msg_doit+0x233/0x340 [ 95.830002][ T5915] genl_rcv_msg+0x614/0x7a0 [ 95.835014][ T5915] netlink_rcv_skb+0x226/0x4a0 [ 95.840301][ T5915] genl_rcv+0x28/0x40 [ 95.844834][ T5915] netlink_unicast+0x7bb/0x940 [ 95.850217][ T5915] netlink_sendmsg+0x813/0xb40 [ 95.855491][ T5915] sock_sendmsg_nosec+0x13a/0x180 [ 95.861126][ T5915] ____sys_sendmsg+0x54e/0x850 [ 95.866418][ T5915] ___sys_sendmsg+0x2a5/0x360 [ 95.871614][ T5915] __x64_sys_sendmsg+0x1b1/0x290 [ 95.877078][ T5915] do_syscall_64+0x174/0x580 [ 95.882351][ T5915] entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 95.889621][ T5915] [ 95.889621][ T5915] -> #3 (&nsock->tx_lock){+.+.}-{4:4}: [ 95.897875][ T5915] __mutex_lock+0x19d/0x1550 [ 95.903618][ T5915] nbd_queue_rq+0x373/0x1150 [ 95.909614][ T5915] blk_mq_dispatch_rq_list+0x499/0x1990 [ 95.916312][ T5915] __blk_mq_sched_dispatch_requests+0xd36/0x1580 [ 95.924542][ T5915] blk_mq_sched_dispatch_requests+0xd7/0x190 [ 95.932218][ T5915] blk_mq_run_work_fn+0x16c/0x300 [ 95.937792][ T5915] process_scheduled_works+0xa8e/0x14e0 [ 95.943857][ T5915] worker_thread+0xa47/0xfb0 [ 95.948974][ T5915] kthread+0x388/0x470 [ 95.953746][ T5915] ret_from_fork+0x514/0xb70 [ 95.958888][ T5915] ret_from_fork_asm+0x1a/0x30 [ 95.964162][ T5915] [ 95.964162][ T5915] -> #2 (&cmd->lock){+.+.}-{4:4}: [ 95.971363][ T5915] __mutex_lock+0x19d/0x1550 [ 95.977063][ T5915] nbd_queue_rq+0xc1/0x1150 [ 95.982372][ T5915] blk_mq_dispatch_rq_list+0x499/0x1990 [ 95.988798][ T5915] __blk_mq_sched_dispatch_requests+0xd36/0x1580 [ 95.995775][ T5915] blk_mq_sched_dispatch_requests+0xd7/0x190 [ 96.002657][ T5915] blk_mq_run_work_fn+0x16c/0x300 [ 96.008232][ T5915] process_scheduled_works+0xa8e/0x14e0 [ 96.014599][ T5915] worker_thread+0xa47/0xfb0 [ 96.019765][ T5915] kthread+0x388/0x470 [ 96.024484][ T5915] ret_from_fork+0x514/0xb70 [ 96.029872][ T5915] ret_from_fork_asm+0x1a/0x30 [ 96.035144][ T5915] [ 96.035144][ T5915] -> #1 (set->srcu){.+.+}-{0:0}: [ 96.042647][ T5915] __synchronize_srcu+0xc9/0x2f0 [ 96.048376][ T5915] elevator_switch+0x1e8/0x7b0 [ 96.053763][ T5915] elevator_change+0x2fa/0x480 [ 96.059509][ T5915] elevator_set_default+0x375/0x440 [ 96.066289][ T5915] blk_register_queue+0x3f3/0x4e0 [ 96.071933][ T5915] __add_disk+0x6cb/0xe30 [ 96.076967][ T5915] add_disk_fwnode+0x100/0x3a0 [ 96.082258][ T5915] nbd_dev_add+0x733/0xb60 [ 96.087417][ T5915] nbd_init+0x15f/0x1e0 [ 96.092111][ T5915] do_one_initcall+0x250/0x870 [ 96.097888][ T5915] do_initcall_level+0x10a/0x1a0 [ 96.103595][ T5915] do_initcalls+0x59/0xa0 [ 96.108461][ T5915] kernel_init_freeable+0x29d/0x3e0 [ 96.114934][ T5915] kernel_init+0x1d/0x1d0 [ 96.120082][ T5915] ret_from_fork+0x514/0xb70 [ 96.125196][ T5915] ret_from_fork_asm+0x1a/0x30 [ 96.130472][ T5915] [ 96.130472][ T5915] -> #0 (&q->elevator_lock){+.+.}-{4:4}: [ 96.138414][ T5915] __lock_acquire+0x1520/0x2cf0 [ 96.144045][ T5915] lock_acquire+0x106/0x350 [ 96.149162][ T5915] __mutex_lock+0x19d/0x1550 [ 96.154738][ T5915] elevator_change+0x1af/0x480 [ 96.160051][ T5915] elevator_set_none+0xb5/0x140 [ 96.165504][ T5915] blk_mq_update_nr_hw_queues+0x5ef/0x19f0 [ 96.171829][ T5915] nbd_start_device+0x189/0xb30 [ 96.177285][ T5915] nbd_genl_connect+0x1597/0x1c10 [ 96.182926][ T5915] genl_family_rcv_msg_doit+0x233/0x340 [ 96.188986][ T5915] genl_rcv_msg+0x614/0x7a0 [ 96.194027][ T5915] netlink_rcv_skb+0x226/0x4a0 [ 96.199485][ T5915] genl_rcv+0x28/0x40 [ 96.203990][ T5915] netlink_unicast+0x7bb/0x940 [ 96.209888][ T5915] netlink_sendmsg+0x813/0xb40 [ 96.215501][ T5915] sock_sendmsg_nosec+0x13a/0x180 [ 96.221172][ T5915] ____sys_sendmsg+0x54e/0x850 [ 96.226730][ T5915] ___sys_sendmsg+0x2a5/0x360 [ 96.231950][ T5915] __x64_sys_sendmsg+0x1b1/0x290 [ 96.238145][ T5915] do_syscall_64+0x174/0x580 [ 96.243453][ T5915] entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 96.250048][ T5915] [ 96.250048][ T5915] other info that might help us debug this: [ 96.250048][ T5915] [ 96.260311][ T5915] Chain exists of: [ 96.260311][ T5915] &q->elevator_lock --> fs_reclaim --> &q->q_usage_counter(io)#50 [ 96.260311][ T5915] [ 96.274152][ T5915] Possible unsafe locking scenario: [ 96.274152][ T5915] [ 96.282058][ T5915] CPU0 CPU1 [ 96.287418][ T5915] ---- ---- [ 96.292783][ T5915] lock(&q->q_usage_counter(io)#50); [ 96.298152][ T5915] lock(fs_reclaim); [ 96.304649][ T5915] lock(&q->q_usage_counter(io)#50); [ 96.312538][ T5915] lock(&q->elevator_lock); [ 96.317390][ T5915] [ 96.317390][ T5915] *** DEADLOCK *** [ 96.317390][ T5915] [ 96.325518][ T5915] 6 locks held by syz.0.18/5915: [ 96.330970][ T5915] #0: ffffffff9009d608 (cb_lock){++++}-{4:4}, at: genl_rcv+0x19/0x40 [ 96.339181][ T5915] #1: ffffffff9009d440 (genl_mutex){+.+.}-{4:4}, at: genl_rcv_msg+0x10b/0x7a0 [ 96.348231][ T5915] #2: ffff8880272791c0 (&set->update_nr_hwq_lock){++++}-{4:4}, at: blk_mq_update_nr_hw_queues+0xab/0x19f0 [ 96.359647][ T5915] #3: ffff8880272790d0 (&set->tag_list_lock){+.+.}-{4:4}, at: blk_mq_update_nr_hw_queues+0xbe/0x19f0 [ 96.371233][ T5915] #4: ffff888026a07020 (&q->q_usage_counter(io)#50){++++}-{0:0}, at: elevator_change+0x194/0x480 [ 96.382146][ T5915] #5: ffff888026a07058 (&q->q_usage_counter(queue)#34){+.+.}-{0:0}, at: elevator_change+0x194/0x480 [ 96.393111][ T5915] [ 96.393111][ T5915] stack backtrace: [ 96.399022][ T5915] CPU: 0 UID: 0 PID: 5915 Comm: syz.0.18 Not tainted syzkaller #0 PREEMPT(full) [ 96.399043][ T5915] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/25/2026 [ 96.399059][ T5915] Call Trace: [ 96.399068][ T5915] [ 96.399075][ T5915] dump_stack_lvl+0xe8/0x150 [ 96.399100][ T5915] print_circular_bug+0x2e1/0x300 [ 96.399117][ T5915] check_noncircular+0x12e/0x150 [ 96.399140][ T5915] __lock_acquire+0x1520/0x2cf0 [ 96.399166][ T5915] ? elevator_change+0x1af/0x480 [ 96.399183][ T5915] lock_acquire+0x106/0x350 [ 96.399201][ T5915] ? elevator_change+0x1af/0x480 [ 96.399226][ T5915] __mutex_lock+0x19d/0x1550 [ 96.399241][ T5915] ? elevator_change+0x1af/0x480 [ 96.399258][ T5915] ? rcu_is_watching+0x15/0xb0 [ 96.399281][ T5915] ? elevator_change+0x1af/0x480 [ 96.399298][ T5915] ? __pfx___mutex_lock+0x10/0x10 [ 96.399311][ T5915] ? enable_work+0x17f/0x230 [ 96.399330][ T5915] ? lockdep_hardirqs_on+0x7a/0x110 [ 96.399353][ T5915] ? __cancel_work_sync+0xf7/0x110 [ 96.399371][ T5915] ? blk_mq_cancel_work_sync+0xa5/0xe0 [ 96.399392][ T5915] elevator_change+0x1af/0x480 [ 96.399412][ T5915] elevator_set_none+0xb5/0x140 [ 96.399429][ T5915] ? __pfx_elevator_set_none+0x10/0x10 [ 96.399449][ T5915] ? xa_load+0x1db/0x210 [ 96.399465][ T5915] blk_mq_update_nr_hw_queues+0x5ef/0x19f0 [ 96.399486][ T5915] ? kernfs_add_one+0x480/0x5e0 [ 96.399507][ T5915] ? nbd_start_device+0x17d/0xb30 [ 96.399530][ T5915] ? __pfx_blk_mq_update_nr_hw_queues+0x10/0x10 [ 96.399555][ T5915] ? sysfs_add_file_mode_ns+0x258/0x300 [ 96.399573][ T5915] nbd_start_device+0x189/0xb30 [ 96.399595][ T5915] ? device_create_file+0xf4/0x1b0 [ 96.399618][ T5915] nbd_genl_connect+0x1597/0x1c10 [ 96.399640][ T5915] ? __pfx_nbd_genl_connect+0x10/0x10 [ 96.399661][ T5915] ? rcu_is_watching+0x15/0xb0 [ 96.399681][ T5915] ? trace_kmalloc+0x2a/0xf0 [ 96.399698][ T5915] ? __kmalloc_noprof+0x396/0x720 [ 96.399716][ T5915] ? __nla_parse+0x40/0x60 [ 96.399735][ T5915] ? genl_family_rcv_msg_attrs_parse+0x20b/0x2f0 [ 96.399754][ T5915] ? genl_family_rcv_msg_attrs_parse+0x265/0x2f0 [ 96.399775][ T5915] genl_family_rcv_msg_doit+0x233/0x340 [ 96.399795][ T5915] ? __pfx_genl_family_rcv_msg_doit+0x10/0x10 [ 96.399816][ T5915] ? __lock_acquire+0x683/0x2cf0 [ 96.399836][ T5915] genl_rcv_msg+0x614/0x7a0 [ 96.399855][ T5915] ? __pfx_genl_rcv_msg+0x10/0x10 [ 96.399872][ T5915] ? __pfx_nbd_genl_connect+0x10/0x10 [ 96.399895][ T5915] netlink_rcv_skb+0x226/0x4a0 [ 96.399909][ T5915] ? __pfx_genl_rcv_msg+0x10/0x10 [ 96.399926][ T5915] ? __pfx_netlink_rcv_skb+0x10/0x10 [ 96.399943][ T5915] ? down_read+0x2be/0x330 [ 96.399958][ T5915] genl_rcv+0x28/0x40 [ 96.399974][ T5915] netlink_unicast+0x7bb/0x940 [ 96.399997][ T5915] netlink_sendmsg+0x813/0xb40 [ 96.400013][ T5915] ? __pfx_netlink_sendmsg+0x10/0x10 [ 96.400026][ T5915] ? filemap_map_pages+0x1ccc/0x2090 [ 96.400043][ T5915] ? aa_sock_msg_perm+0xf1/0x1b0 [ 96.400064][ T5915] ? __pfx_netlink_sendmsg+0x10/0x10 [ 96.400078][ T5915] sock_sendmsg_nosec+0x13a/0x180 [ 96.400096][ T5915] ____sys_sendmsg+0x54e/0x850 [ 96.400111][ T5915] ? __pfx_____sys_sendmsg+0x10/0x10 [ 96.400127][ T5915] ? import_iovec+0x73/0xa0 [ 96.400147][ T5915] ___sys_sendmsg+0x2a5/0x360 [ 96.400161][ T5915] ? __pfx____sys_sendmsg+0x10/0x10 [ 96.400175][ T5915] ? futex_wake+0x522/0x5f0 [ 96.400200][ T5915] ? __pfx_do_futex+0x10/0x10 [ 96.400227][ T5915] __x64_sys_sendmsg+0x1b1/0x290 [ 96.400241][ T5915] ? __pfx___x64_sys_sendmsg+0x10/0x10 [ 96.400259][ T5915] ? entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 96.400274][ T5915] do_syscall_64+0x174/0x580 [ 96.400286][ T5915] ? trace_irq_disable+0x3b/0x140 [ 96.400303][ T5915] ? clear_bhb_loop+0x40/0x90 [ 96.400319][ T5915] entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 96.400334][ T5915] RIP: 0033:0x7fd5b839de99 [ 96.400357][ T5915] 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 [ 96.400372][ T5915] RSP: 002b:00007ffe4d56dd68 EFLAGS: 00000246 ORIG_RAX: 000000000000002e [ 96.400389][ T5915] RAX: ffffffffffffffda RBX: 00007fd5b8625fa0 RCX: 00007fd5b839de99 [ 96.400399][ T5915] RDX: 0000000000000004 RSI: 0000200000001ac0 RDI: 0000000000000009 [ 96.400409][ T5915] RBP: 00007fd5b8433eaf R08: 0000000000000000 R09: 0000000000000000 [ 96.400418][ T5915] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 [ 96.400427][ T5915] R13: 00007fd5b8625fac R14: 00007fd5b8625fa0 R15: 00007fd5b8625fa0 [ 96.400442][ T5915] [ 96.857118][ T4944] Bluetooth: hci0: command tx timeout [ 96.948612][ T50] block nbd0: Receive control failed (result -104) [ 96.948658][ T4944] block nbd1: Receive control failed (result -32) [ 96.955252][ T5910] block nbd1: Receive control failed (result -32) [ 96.973942][ T5706] block nbd1: Receive control failed (result -32) 2026/07/22 10:32:20 executed programs: 4 [ 96.994882][ T5937] block nbd0: reconnected socket [ 97.266127][ T5910] block nbd2: Receive control failed (result -32) [ 97.270439][ T5706] block nbd2: Receive control failed (result -32) [ 97.272744][ T4944] block nbd0: Receive control failed (result -32) [ 97.279296][ T50] block nbd2: Receive control failed (result -32) [ 97.305776][ T5939] block nbd0: reconnected socket [ 97.585833][ T5706] block nbd3: Receive control failed (result -32) [ 97.586166][ T4944] block nbd3: Receive control failed (result -32) [ 97.598925][ T5910] block nbd3: Receive control failed (result -32) [ 97.601487][ T50] block nbd0: Receive control failed (result -32) [ 97.626480][ T5940] block nbd0: reconnected socket [ 97.875741][ T5706] block nbd4: Receive control failed (result -32) [ 97.875954][ T5910] block nbd4: Receive control failed (result -32) [ 97.882423][ T4944] block nbd4: Receive control failed (result -32) [ 97.895479][ T50] block nbd0: Receive control failed (result -32) [ 97.914107][ T5941] block nbd0: reconnected socket [ 98.165992][ T5706] block nbd5: Receive control failed (result -32) [ 98.167182][ T5910] block nbd5: Receive control failed (result -32) [ 98.172694][ T50] block nbd0: Receive control failed (result -32) [ 98.178928][ T4944] block nbd5: Receive control failed (result -32) [ 98.206577][ T5942] block nbd0: reconnected socket [ 98.465885][ T5706] block nbd6: Receive control failed (result -32) [ 98.466588][ T5910] block nbd6: Receive control failed (result -32) [ 98.472601][ T50] block nbd6: Receive control failed (result -32) [ 98.479383][ T4944] block nbd0: Receive control failed (result -32) [ 98.506149][ T5943] block nbd0: reconnected socket [ 98.805836][ T5706] block nbd7: Receive control failed (result -32) [ 98.806032][ T5910] block nbd7: Receive control failed (result -32) [ 98.812610][ T50] block nbd7: Receive control failed (result -32) [ 98.819166][ T4944] block nbd0: Receive control failed (result -32) [ 98.849168][ T5944] block nbd0: reconnected socket [ 98.885478][ T5910] Bluetooth: hci0: command tx timeout [ 99.115801][ T5706] block nbd8: Receive control failed (result -32) [ 99.116035][ T50] block nbd8: Receive control failed (result -32) [ 99.129055][ T5910] block nbd8: Receive control failed (result -32) [ 99.129329][ T4944] block nbd0: Receive control failed (result -32) [ 99.154176][ T5945] block nbd0: reconnected socket [ 99.396037][ T5910] block nbd9: Receive control failed (result -32) [ 99.402997][ T5706] block nbd9: Receive control failed (result -32) [ 99.410148][ T50] block nbd9: Receive control failed (result -32) [ 99.416852][ T4944] block nbd0: Receive control failed (result -32) [ 99.433749][ T5946] block nbd0: reconnected socket [ 99.605692][ T2711] block nbd0: Connection timed out, retrying (1/3 alive) [ 99.666046][ T5910] block nbd10: Receive control failed (result -32) [ 99.666066][ T5706] block nbd10: Receive control failed (result -32) [ 99.679352][ T50] block nbd10: Receive control failed (result -32) [ 99.679723][ T4944] block nbd0: Receive control failed (result -104) [ 99.706845][ T5947] block nbd0: reconnected socket [ 99.966095][ T50] block nbd11: Receive control failed (result -32) [ 99.966493][ T5910] block nbd11: Receive control failed (result -32) [ 99.979352][ T4944] block nbd0: Receive control failed (result -32) [ 99.986115][ T5706] block nbd11: Receive control failed (result -32) [ 100.002755][ T5949] block nbd0: reconnected socket [ 100.246001][ T50] block nbd12: Receive control failed (result -32) [ 100.246592][ T4944] block nbd12: Receive control failed (result -32) [ 100.252801][ T5706] block nbd12: Receive control failed (result -32) [ 100.266216][ T5910] block nbd0: Receive control failed (result -32) [ 100.289812][ T5950] block nbd0: reconnected socket [ 100.525985][ T4944] block nbd13: Receive control failed (result -32) [ 100.525992][ T50] block nbd13: Receive control failed (result -32) [ 100.526066][ T5910] block nbd13: Receive control failed (result -32) [ 100.539405][ T5706] block nbd0: Receive control failed (result -32) [ 100.559052][ T5951] block nbd0: reconnected socket [ 100.806206][ T4944] block nbd14: Receive control failed (result -32) [ 100.813053][ T50] block nbd14: Receive control failed (result -32) [ 100.813066][ T5706] block nbd14: Receive control failed (result -32) [ 100.826462][ T5910] block nbd0: Receive control failed (result -32) [ 100.844855][ T5952] block nbd0: reconnected socket [ 101.105979][ T5910] block nbd15: Receive control failed (result -32) [ 101.105983][ T4944] block nbd15: Receive control failed (result -32) [ 101.106047][ T5706] block nbd15: Receive control failed (result -32) [ 101.126729][ T50] block nbd0: Receive control failed (result -32) [ 101.146093][ T5953] block nbd0: reconnected socket [ 101.406078][ T50] block nbd16: Receive control failed (result -32) [ 101.406111][ T5706] block nbd0: Receive control failed (result -32) [ 101.412768][ T5910] block nbd16: Receive control failed (result -32) [ 101.425805][ T4944] block nbd16: Receive control failed (result -32) [ 101.447654][ T5955] block nbd0: reconnected socket [ 101.705803][ T50] block nbd17: Receive control failed (result -32) [ 101.706050][ T4944] block nbd17: Receive control failed (result -32) [ 101.712882][ T5706] block nbd17: Receive control failed (result -32) [ 101.719788][ T5910] block nbd0: Receive control failed (result -32) [ 101.750313][ T5957] block nbd0: reconnected socket 2026/07/22 10:32:25 executed programs: 21 [ 102.015819][ T50] block nbd18: Receive control failed (result -32) [ 102.022875][ T5706] block nbd18: Receive control failed (result -32) [ 102.029494][ T5910] block nbd0: Receive control failed (result -32) [ 102.032281][ T4944] block nbd18: Receive control failed (result -32) [ 102.047880][ T5959] block nbd0: reconnected socket [ 102.315848][ T50] block nbd19: Receive control failed (result -32) [ 102.322232][ T5910] block nbd19: Receive control failed (result -32) [ 102.322656][ T5706] block nbd19: Receive control failed (result -32) [ 102.335675][ T4944] block nbd0: Receive control failed (result -32) [ 102.357943][ T5961] block nbd0: reconnected socket [ 102.606021][ T5910] block nbd20: Receive control failed (result -32) [ 102.612695][ T4944] block nbd0: Receive control failed (result -32) [ 102.612695][ T50] block nbd20: Receive control failed (result -32) [ 102.612785][ T5706] block nbd20: Receive control failed (result -32) [ 102.649626][ T5963] block nbd0: reconnected socket [ 102.895752][ T50] block nbd21: Receive control failed (result -32) [ 102.896214][ T5910] block nbd21: Receive control failed (result -32) [ 102.902446][ T4944] block nbd21: Receive control failed (result -32) [ 102.915519][ T5706] block nbd0: Receive control failed (result -32) [ 102.937627][ T5965] block nbd0: reconnected socket [ 103.175870][ T5910] block nbd22: Receive control failed (result -32) [ 103.176093][ T50] block nbd22: Receive control failed (result -32) [ 103.182448][ T5706] block nbd22: Receive control failed (result -32) [ 103.189221][ T4944] block nbd0: Receive control failed (result -32) [ 103.213351][ T5967] block nbd0: reconnected socket [ 103.476087][ T5706] block nbd23: Receive control failed (result -32) [ 103.482766][ T4944] block nbd0: Receive control failed (result -32) [ 103.482766][ T50] block nbd23: Receive control failed (result -32) [ 103.482934][ T5910] block nbd23: Receive control failed (result -32) [ 103.514058][ T5970] block nbd0: reconnected socket [ 103.795919][ T50] block nbd24: Receive control failed (result -32) [ 103.796261][ T4944] block nbd24: Receive control failed (result -32) [ 103.803913][ T5706] block nbd24: Receive control failed (result -32) [ 103.817250][ T5910] block nbd0: Receive control failed (result -32) [ 103.838427][ T5972] block nbd0: reconnected socket [ 103.925587][ T2711] block nbd0: Connection timed out, retrying (1/3 alive) [ 104.095751][ T4944] block nbd25: Receive control failed (result -32) [ 104.095935][ T5910] block nbd25: Receive control failed (result -32) [ 104.108976][ T5706] block nbd0: Receive control failed (result -104) [ 104.115684][ T50] block nbd25: Receive control failed (result -32) [ 104.132743][ T5974] block nbd0: reconnected socket [ 104.406191][ T5706] block nbd26: Receive control failed (result -32) [ 104.406202][ T4944] block nbd26: Receive control failed (result -32) [ 104.406260][ T5910] block nbd26: Receive control failed (result -32) [ 104.426459][ T50] block nbd0: Receive control failed (result -32) [ 104.439750][ T5976] block nbd0: reconnected socket [ 104.726159][ T50] block nbd27: Receive control failed (result -32) [ 104.732736][ T4944] block nbd27: Receive control failed (result -32) [ 104.732743][ T5910] block nbd0: Receive control failed (result -32) [ 104.745786][ T5706] block nbd27: Receive control failed (result -32) [ 104.763296][ T5978] block nbd0: reconnected socket [ 105.045869][ T5910] block nbd28: Receive control failed (result -32) [ 105.046092][ T5706] block nbd28: Receive control failed (result -32) [ 105.052472][ T50] block nbd28: Receive control failed (result -32) [ 105.059166][ T4944] block nbd0: Receive control failed (result -32) [ 105.083277][ T5980] block nbd0: reconnected socket [ 105.335760][ T5910] block nbd29: Receive control failed (result -32) [ 105.336027][ T5706] block nbd29: Receive control failed (result -32) [ 105.342365][ T50] block nbd29: Receive control failed (result -32) [ 105.355465][ T4944] block nbd0: Receive control failed (result -32) [ 105.374774][ T5982] block nbd0: reconnected socket