Warning: Permanently added '10.128.1.206' (ED25519) to the list of known hosts. [ 86.822265][ T1225] cfg80211: failed to load regulatory.db 2026/04/07 05:24:28 ignoring optional flag "type"="gce" 2026/04/07 05:24:29 parsed 1 programs 2026/04/07 05:24:29 executed programs: 0 [ 87.204573][ T50] Bluetooth: hci0: unexpected cc 0x0c03 length: 249 > 1 [ 87.212436][ T50] Bluetooth: hci0: unexpected cc 0x1003 length: 249 > 9 [ 87.220587][ T50] Bluetooth: hci0: unexpected cc 0x1001 length: 249 > 9 [ 87.228756][ T50] Bluetooth: hci0: unexpected cc 0x0c23 length: 249 > 4 [ 87.237101][ T50] Bluetooth: hci0: unexpected cc 0x0c38 length: 249 > 2 [ 87.371097][ T6031] chnl_net:caif_netlink_parms(): no params data found [ 87.438184][ T6031] bridge0: port 1(bridge_slave_0) entered blocking state [ 87.445595][ T6031] bridge0: port 1(bridge_slave_0) entered disabled state [ 87.453076][ T6031] bridge_slave_0: entered allmulticast mode [ 87.460070][ T6031] bridge_slave_0: entered promiscuous mode [ 87.468062][ T6031] bridge0: port 2(bridge_slave_1) entered blocking state [ 87.475668][ T6031] bridge0: port 2(bridge_slave_1) entered disabled state [ 87.482938][ T6031] bridge_slave_1: entered allmulticast mode [ 87.490474][ T6031] bridge_slave_1: entered promiscuous mode [ 87.517437][ T6031] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 87.529396][ T6031] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 87.559703][ T6031] team0: Port device team_slave_0 added [ 87.567091][ T6031] team0: Port device team_slave_1 added [ 87.590706][ T6031] batman_adv: batadv0: Adding interface: batadv_slave_0 [ 87.597679][ T6031] 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. [ 87.624489][ T6031] batman_adv: batadv0: Not using interface batadv_slave_0 (retrying later): interface not active [ 87.638499][ T6031] batman_adv: batadv0: Adding interface: batadv_slave_1 [ 87.645896][ T6031] 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. [ 87.671930][ T6031] batman_adv: batadv0: Not using interface batadv_slave_1 (retrying later): interface not active [ 87.710942][ T6031] hsr_slave_0: entered promiscuous mode [ 87.717274][ T6031] hsr_slave_1: entered promiscuous mode [ 88.247371][ T6031] netdevsim netdevsim0 netdevsim0: renamed from eth0 [ 88.261493][ T6031] netdevsim netdevsim0 netdevsim1: renamed from eth1 [ 88.273796][ T6031] netdevsim netdevsim0 netdevsim2: renamed from eth2 [ 88.287645][ T6031] netdevsim netdevsim0 netdevsim3: renamed from eth3 [ 88.335659][ T6031] bridge0: port 2(bridge_slave_1) entered blocking state [ 88.343042][ T6031] bridge0: port 2(bridge_slave_1) entered forwarding state [ 88.350600][ T6031] bridge0: port 1(bridge_slave_0) entered blocking state [ 88.357859][ T6031] bridge0: port 1(bridge_slave_0) entered forwarding state [ 88.375899][ T48] bridge0: port 1(bridge_slave_0) entered disabled state [ 88.384918][ T48] bridge0: port 2(bridge_slave_1) entered disabled state [ 88.457932][ T6031] 8021q: adding VLAN 0 to HW filter on device bond0 [ 88.486198][ T6031] 8021q: adding VLAN 0 to HW filter on device team0 [ 88.503726][ T146] bridge0: port 1(bridge_slave_0) entered blocking state [ 88.511061][ T146] bridge0: port 1(bridge_slave_0) entered forwarding state [ 88.533823][ T146] bridge0: port 2(bridge_slave_1) entered blocking state [ 88.541028][ T146] bridge0: port 2(bridge_slave_1) entered forwarding state [ 88.785568][ T6031] 8021q: adding VLAN 0 to HW filter on device batadv0 [ 88.853192][ T6031] veth0_vlan: entered promiscuous mode [ 88.867600][ T6031] veth1_vlan: entered promiscuous mode [ 88.904539][ T6031] veth0_macvtap: entered promiscuous mode [ 88.915788][ T6031] veth1_macvtap: entered promiscuous mode [ 88.940353][ T6031] batman_adv: batadv0: Interface activated: batadv_slave_0 [ 88.962723][ T6031] batman_adv: batadv0: Interface activated: batadv_slave_1 [ 88.982927][ T48] netdevsim netdevsim0 netdevsim0: set [1, 0] type 2 family 0 port 6081 - 0 [ 88.992064][ T48] netdevsim netdevsim0 netdevsim1: set [1, 0] type 2 family 0 port 6081 - 0 [ 89.007201][ T48] netdevsim netdevsim0 netdevsim2: set [1, 0] type 2 family 0 port 6081 - 0 [ 89.022219][ T48] netdevsim netdevsim0 netdevsim3: set [1, 0] type 2 family 0 port 6081 - 0 [ 89.237271][ T6096] nbd0: detected capacity change from 0 to 2 [ 89.300094][ T5848] Bluetooth: hci0: command tx timeout [ 89.985716][ T50] block nbd0: Receive control failed (result -104) [ 89.990130][ T6096] block nbd0: shutting down sockets [ 90.000923][ C0] I/O error, dev nbd0, sector 0 op 0x0:(READ) flags 0x0 phys_seg 1 prio class 2 [ 90.010486][ C0] Buffer I/O error on dev nbd0, logical block 0, async page read [ 90.018562][ T6100] I/O error, dev nbd0, sector 0 op 0x0:(READ) flags 0x0 phys_seg 1 prio class 2 [ 90.029106][ T6100] Buffer I/O error on dev nbd0, logical block 0, async page read [ 90.048821][ T6100] I/O error, dev nbd0, sector 0 op 0x0:(READ) flags 0x0 phys_seg 1 prio class 2 [ 90.059789][ T6100] Buffer I/O error on dev nbd0, logical block 0, async page read [ 90.068078][ T6100] I/O error, dev nbd0, sector 0 op 0x0:(READ) flags 0x0 phys_seg 1 prio class 2 [ 90.078326][ T6100] Buffer I/O error on dev nbd0, logical block 0, async page read [ 90.086698][ T6100] I/O error, dev nbd0, sector 0 op 0x0:(READ) flags 0x0 phys_seg 1 prio class 2 [ 90.096343][ T6100] Buffer I/O error on dev nbd0, logical block 0, async page read [ 90.110099][ T6100] ldm_validate_partition_table(): Disk read failed. [ 90.122002][ T6100] I/O error, dev nbd0, sector 0 op 0x0:(READ) flags 0x0 phys_seg 1 prio class 2 [ 90.132458][ T6100] Buffer I/O error on dev nbd0, logical block 0, async page read [ 90.140825][ T6100] I/O error, dev nbd0, sector 0 op 0x0:(READ) flags 0x0 phys_seg 1 prio class 2 [ 90.151205][ T6100] Buffer I/O error on dev nbd0, logical block 0, async page read [ 90.159690][ T6100] I/O error, dev nbd0, sector 0 op 0x0:(READ) flags 0x0 phys_seg 1 prio class 2 [ 90.169400][ T6100] Buffer I/O error on dev nbd0, logical block 0, async page read [ 90.177697][ T6100] I/O error, dev nbd0, sector 0 op 0x0:(READ) flags 0x0 phys_seg 1 prio class 2 [ 90.192933][ T6100] Buffer I/O error on dev nbd0, logical block 0, async page read [ 90.201313][ T6100] Dev nbd0: unable to read RDB block 0 [ 90.207061][ T6100] I/O error, dev nbd0, sector 0 op 0x0:(READ) flags 0x0 phys_seg 1 prio class 2 [ 90.216850][ T6100] Buffer I/O error on dev nbd0, logical block 0, async page read [ 90.225795][ T6100] nbd0: unable to read partition table [ 90.232041][ T6100] nbd0: partition table beyond EOD, truncated [ 90.248676][ T6021] ldm_validate_partition_table(): Disk read failed. [ 90.256174][ T6021] Dev nbd0: unable to read RDB block 0 [ 90.262272][ T6021] nbd0: unable to read partition table [ 90.268077][ T6021] nbd0: partition table beyond EOD, truncated [ 90.283510][ T6021] ldm_validate_partition_table(): Disk read failed. [ 90.301624][ T6021] Dev nbd0: unable to read RDB block 0 [ 90.307762][ T6021] nbd0: unable to read partition table [ 90.314223][ T6021] nbd0: partition table beyond EOD, truncated [ 90.334070][ T6142] ldm_validate_partition_table(): Disk read failed. [ 90.341777][ T6142] Dev nbd0: unable to read RDB block 0 [ 90.348568][ T6142] nbd0: unable to read partition table [ 90.354680][ T6142] nbd0: partition table beyond EOD, truncated [ 90.381839][ T6142] ldm_validate_partition_table(): Disk read failed. [ 90.389535][ T6142] Dev nbd0: unable to read RDB block 0 [ 90.395695][ T6142] nbd0: unable to read partition table [ 90.404600][ T6142] nbd0: partition table beyond EOD, truncated [ 90.412311][ T6021] ldm_validate_partition_table(): Disk read failed. [ 90.449719][ T6142] block nbd0: Device being setup by another task [ 90.458292][ T6021] Dev nbd0: unable to read RDB block 0 [ 90.464758][ T6021] nbd0: unable to read partition table [ 90.471110][ T6021] nbd0: partition table beyond EOD, truncated [ 90.483864][ T6142] ldm_validate_partition_table(): Disk read failed. [ 90.499458][ T6142] Dev nbd0: unable to read RDB block 0 [ 90.505377][ T6142] nbd0: unable to read partition table [ 90.514385][ T6142] nbd0: partition table beyond EOD, truncated [ 90.522123][ T6021] ldm_validate_partition_table(): Disk read failed. [ 90.531799][ T6021] Dev nbd0: unable to read RDB block 0 [ 90.537878][ T6021] nbd0: unable to read partition table [ 90.545717][ T6021] nbd0: partition table beyond EOD, truncated [ 90.679323][ T6151] nbd0: detected capacity change from 0 to 2 [ 91.380027][ T5848] Bluetooth: hci0: command tx timeout [ 91.444239][ T50] block nbd0: Receive control failed (result -104) [ 93.459040][ T50] Bluetooth: hci0: command tx timeout [ 95.539149][ T50] Bluetooth: hci0: command tx timeout [ 120.740908][ T11] block nbd0: Possible stuck request ffff888027224600: control (read@0,1024B). Runtime 30 seconds [ 132.901650][ T1317] ieee802154 phy0 wpan0: encryption failed: -22 [ 132.908460][ T1317] ieee802154 phy1 wpan1: encryption failed: -22 2026/04/07 05:25:27 executed programs: 3 [ 146.608464][ T5848] Bluetooth: hci1: unexpected cc 0x0c03 length: 249 > 1 [ 146.617693][ T5848] Bluetooth: hci1: unexpected cc 0x1003 length: 249 > 9 [ 146.626544][ T5848] Bluetooth: hci1: unexpected cc 0x1001 length: 249 > 9 [ 146.635224][ T5848] Bluetooth: hci1: unexpected cc 0x0c23 length: 249 > 4 [ 146.643766][ T5848] Bluetooth: hci1: unexpected cc 0x0c38 length: 249 > 2 [ 146.787052][ T6234] chnl_net:caif_netlink_parms(): no params data found [ 146.856215][ T6234] bridge0: port 1(bridge_slave_0) entered blocking state [ 146.863662][ T6234] bridge0: port 1(bridge_slave_0) entered disabled state [ 146.870977][ T6234] bridge_slave_0: entered allmulticast mode [ 146.878057][ T6234] bridge_slave_0: entered promiscuous mode [ 146.886052][ T6234] bridge0: port 2(bridge_slave_1) entered blocking state [ 146.893759][ T6234] bridge0: port 2(bridge_slave_1) entered disabled state [ 146.901676][ T6234] bridge_slave_1: entered allmulticast mode [ 146.908778][ T6234] bridge_slave_1: entered promiscuous mode [ 146.939566][ T6234] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 146.951339][ T6234] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 146.981227][ T6234] team0: Port device team_slave_0 added [ 146.988695][ T6234] team0: Port device team_slave_1 added [ 147.013836][ T6234] batman_adv: batadv0: Adding interface: batadv_slave_0 [ 147.021157][ T6234] 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. [ 147.047425][ T6234] batman_adv: batadv0: Not using interface batadv_slave_0 (retrying later): interface not active [ 147.060677][ T6234] batman_adv: batadv0: Adding interface: batadv_slave_1 [ 147.067870][ T6234] 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. [ 147.094158][ T6234] batman_adv: batadv0: Not using interface batadv_slave_1 (retrying later): interface not active [ 147.131357][ T6234] hsr_slave_0: entered promiscuous mode [ 147.137758][ T6234] hsr_slave_1: entered promiscuous mode [ 147.144106][ T6234] debugfs: 'hsr0' already exists in 'hsr' [ 147.150122][ T6234] Cannot create hsr debugfs directory [ 147.246215][ T6234] netdevsim netdevsim0 netdevsim3 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 147.332544][ T6234] netdevsim netdevsim0 netdevsim2 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 147.380326][ T6234] netdevsim netdevsim0 netdevsim1 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 147.425203][ T6234] netdevsim netdevsim0 netdevsim0 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 147.550643][ T6234] netdevsim netdevsim0 netdevsim0: renamed from eth0 [ 147.560864][ T6234] netdevsim netdevsim0 netdevsim1: renamed from eth1 [ 147.570840][ T6234] netdevsim netdevsim0 netdevsim2: renamed from eth2 [ 147.581325][ T6234] netdevsim netdevsim0 netdevsim3: renamed from eth3 [ 147.606054][ T6234] bridge0: port 2(bridge_slave_1) entered blocking state [ 147.613281][ T6234] bridge0: port 2(bridge_slave_1) entered forwarding state [ 147.621002][ T6234] bridge0: port 1(bridge_slave_0) entered blocking state [ 147.628111][ T6234] bridge0: port 1(bridge_slave_0) entered forwarding state [ 147.677569][ T6234] 8021q: adding VLAN 0 to HW filter on device bond0 [ 147.692537][ T1156] bridge0: port 1(bridge_slave_0) entered disabled state [ 147.700971][ T1156] bridge0: port 2(bridge_slave_1) entered disabled state [ 147.719738][ T6234] 8021q: adding VLAN 0 to HW filter on device team0 [ 147.732674][ T1156] bridge0: port 1(bridge_slave_0) entered blocking state [ 147.739956][ T1156] bridge0: port 1(bridge_slave_0) entered forwarding state [ 147.753697][ T146] bridge0: port 2(bridge_slave_1) entered blocking state [ 147.760859][ T146] bridge0: port 2(bridge_slave_1) entered forwarding state [ 147.901419][ T6234] 8021q: adding VLAN 0 to HW filter on device batadv0 [ 147.939830][ T6234] veth0_vlan: entered promiscuous mode [ 147.951342][ T6234] veth1_vlan: entered promiscuous mode [ 147.979628][ T6234] veth0_macvtap: entered promiscuous mode [ 147.988626][ T6234] veth1_macvtap: entered promiscuous mode [ 148.005410][ T6234] batman_adv: batadv0: Interface activated: batadv_slave_0 [ 148.018533][ T6234] batman_adv: batadv0: Interface activated: batadv_slave_1 [ 148.033076][ T1156] netdevsim netdevsim0 netdevsim0: set [1, 0] type 2 family 0 port 6081 - 0 [ 148.041923][ T1156] netdevsim netdevsim0 netdevsim1: set [1, 0] type 2 family 0 port 6081 - 0 [ 148.053376][ T1156] netdevsim netdevsim0 netdevsim2: set [1, 0] type 2 family 0 port 6081 - 0 [ 148.062475][ T1156] netdevsim netdevsim0 netdevsim3: set [1, 0] type 2 family 0 port 6081 - 0 [ 148.659160][ T50] Bluetooth: hci1: command tx timeout [ 150.739099][ T50] Bluetooth: hci1: command tx timeout [ 150.831917][ T2300] block nbd0: Possible stuck request ffff888027224600: control (read@0,1024B). Runtime 60 seconds [ 151.129055][ T5211] udevd[5211]: worker [6021] /devices/virtual/block/nbd0 is taking a long time [ 152.819129][ T50] Bluetooth: hci1: command tx timeout [ 154.899103][ T50] Bluetooth: hci1: command tx timeout [ 180.900549][ T11] block nbd0: Possible stuck request ffff888027224600: control (read@0,1024B). Runtime 90 seconds [ 194.341904][ T1317] ieee802154 phy0 wpan0: encryption failed: -22 [ 194.348388][ T1317] ieee802154 phy1 wpan1: encryption failed: -22 2026/04/07 05:26:25 executed programs: 4 [ 204.149244][ T5848] Bluetooth: hci2: unexpected cc 0x0c03 length: 249 > 1 [ 204.157522][ T5848] Bluetooth: hci2: unexpected cc 0x1003 length: 249 > 9 [ 204.165603][ T5848] Bluetooth: hci2: unexpected cc 0x1001 length: 249 > 9 [ 204.175762][ T5848] Bluetooth: hci2: unexpected cc 0x0c23 length: 249 > 4 [ 204.184371][ T5848] Bluetooth: hci2: unexpected cc 0x0c38 length: 249 > 2 [ 204.331302][ T6264] chnl_net:caif_netlink_parms(): no params data found [ 204.396101][ T6264] bridge0: port 1(bridge_slave_0) entered blocking state [ 204.404109][ T6264] bridge0: port 1(bridge_slave_0) entered disabled state [ 204.412286][ T6264] bridge_slave_0: entered allmulticast mode [ 204.420485][ T6264] bridge_slave_0: entered promiscuous mode [ 204.429069][ T6264] bridge0: port 2(bridge_slave_1) entered blocking state [ 204.436396][ T6264] bridge0: port 2(bridge_slave_1) entered disabled state [ 204.444125][ T6264] bridge_slave_1: entered allmulticast mode [ 204.451315][ T6264] bridge_slave_1: entered promiscuous mode [ 204.481118][ T6264] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 204.492774][ T6264] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 204.523173][ T6264] team0: Port device team_slave_0 added [ 204.531079][ T6264] team0: Port device team_slave_1 added [ 204.559890][ T6264] batman_adv: batadv0: Adding interface: batadv_slave_0 [ 204.566861][ T6264] 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. [ 204.599725][ T6264] batman_adv: batadv0: Not using interface batadv_slave_0 (retrying later): interface not active [ 204.612862][ T6264] batman_adv: batadv0: Adding interface: batadv_slave_1 [ 204.622588][ T6264] 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. [ 204.649730][ T6264] batman_adv: batadv0: Not using interface batadv_slave_1 (retrying later): interface not active [ 204.718235][ T6264] hsr_slave_0: entered promiscuous mode [ 204.725810][ T6264] hsr_slave_1: entered promiscuous mode [ 204.733826][ T6264] debugfs: 'hsr0' already exists in 'hsr' [ 204.739995][ T6264] Cannot create hsr debugfs directory [ 204.893372][ T6264] netdevsim netdevsim0 netdevsim3 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 204.964022][ T6264] netdevsim netdevsim0 netdevsim2 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 205.049076][ T6264] netdevsim netdevsim0 netdevsim1 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 205.125556][ T6264] netdevsim netdevsim0 netdevsim0 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 205.243825][ T6264] netdevsim netdevsim0 netdevsim0: renamed from eth0 [ 205.260756][ T6264] netdevsim netdevsim0 netdevsim1: renamed from eth1 [ 205.271034][ T6264] netdevsim netdevsim0 netdevsim2: renamed from eth2 [ 205.281148][ T6264] netdevsim netdevsim0 netdevsim3: renamed from eth3 [ 205.346779][ T6264] 8021q: adding VLAN 0 to HW filter on device bond0 [ 205.365133][ T6264] 8021q: adding VLAN 0 to HW filter on device team0 [ 205.380357][ T48] bridge0: port 1(bridge_slave_0) entered blocking state [ 205.387659][ T48] bridge0: port 1(bridge_slave_0) entered forwarding state [ 205.403489][ T87] bridge0: port 2(bridge_slave_1) entered blocking state [ 205.410937][ T87] bridge0: port 2(bridge_slave_1) entered forwarding state [ 205.555815][ T6264] 8021q: adding VLAN 0 to HW filter on device batadv0 [ 205.594604][ T6264] veth0_vlan: entered promiscuous mode [ 205.605240][ T6264] veth1_vlan: entered promiscuous mode [ 205.631202][ T6264] veth0_macvtap: entered promiscuous mode [ 205.641365][ T6264] veth1_macvtap: entered promiscuous mode [ 205.658035][ T6264] batman_adv: batadv0: Interface activated: batadv_slave_0 [ 205.673579][ T6264] batman_adv: batadv0: Interface activated: batadv_slave_1 [ 205.687073][ T1156] netdevsim netdevsim0 netdevsim0: set [1, 0] type 2 family 0 port 6081 - 0 [ 205.696090][ T1156] netdevsim netdevsim0 netdevsim1: set [1, 0] type 2 family 0 port 6081 - 0 [ 205.706383][ T1156] netdevsim netdevsim0 netdevsim2: set [1, 0] type 2 family 0 port 6081 - 0 [ 205.715857][ T1156] netdevsim netdevsim0 netdevsim3: set [1, 0] type 2 family 0 port 6081 - 0 [ 206.259184][ T50] Bluetooth: hci2: command tx timeout [ 208.339128][ T50] Bluetooth: hci2: command tx timeout [ 210.419659][ T5848] Bluetooth: hci2: command tx timeout [ 210.990868][ T2300] block nbd0: Possible stuck request ffff888027224600: control (read@0,1024B). Runtime 120 seconds [ 211.779024][ T5848] Bluetooth: hci0: command 0x0406 tx timeout [ 212.499176][ T50] Bluetooth: hci2: command tx timeout [ 241.059616][ T11] block nbd0: Possible stuck request ffff888027224600: control (read@0,1024B). Runtime 150 seconds [ 250.024393][ T30] INFO: task syz-executor.0:6150 blocked for more than 143 seconds. [ 250.032502][ T30] Not tainted syzkaller #0 [ 250.037526][ T30] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. [ 250.046413][ T30] task:syz-executor.0 state:D stack:25496 pid:6150 tgid:6150 ppid:6031 task_flags:0x400040 flags:0x00080002 [ 250.058560][ T30] Call Trace: [ 250.061894][ T30] [ 250.064829][ T30] __schedule+0x17b4/0x5680 [ 250.069411][ T30] ? __lock_acquire+0x6b5/0x2cf0 [ 250.074584][ T30] ? __pfx___schedule+0x10/0x10 [ 250.079599][ T30] ? schedule+0x90/0x360 [ 250.083864][ T30] schedule+0x164/0x360 [ 250.088024][ T30] schedule_preempt_disabled+0x13/0x30 [ 250.093600][ T30] __mutex_lock+0x7f5/0x1550 [ 250.098324][ T30] ? __mutex_lock+0x606/0x1550 [ 250.103389][ T30] ? bdev_release+0x1a9/0x650 [ 250.108096][ T30] ? __pfx___mutex_lock+0x10/0x10 [ 250.113262][ T30] ? __asan_memset+0x22/0x50 [ 250.118161][ T30] ? __fsnotify_parent+0x267/0x620 [ 250.123428][ T30] ? __pfx___fsnotify_parent+0x10/0x10 [ 250.129191][ T30] ? locks_remove_posix+0x432/0x6a0 [ 250.134411][ T30] bdev_release+0x1a9/0x650 [ 250.139087][ T30] ? __pfx_blkdev_release+0x10/0x10 [ 250.144305][ T30] blkdev_release+0x15/0x20 [ 250.148830][ T30] __fput+0x44f/0xa60 [ 250.152926][ T30] fput_close_sync+0x11f/0x240 [ 250.157698][ T30] ? __pfx_fput_close_sync+0x10/0x10 [ 250.163160][ T30] ? entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 250.169540][ T30] ? entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 250.175715][ T30] __x64_sys_close+0x7e/0x110 [ 250.180622][ T30] do_syscall_64+0x15f/0xf80 [ 250.185419][ T30] ? trace_irq_disable+0x3b/0x140 [ 250.190510][ T30] ? clear_bhb_loop+0x40/0x90 [ 250.195221][ T30] entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 250.201647][ T30] RIP: 0033:0x7fb7220903de [ 250.206131][ T30] RSP: 002b:00007ffe13740eb8 EFLAGS: 00000246 ORIG_RAX: 0000000000000003 [ 250.214600][ T30] RAX: ffffffffffffffda RBX: 0000555584b214c0 RCX: 00007fb7220903de [ 250.222794][ T30] RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000006 [ 250.231029][ T30] RBP: 00007fb7221ad980 R08: 0000000000000000 R09: 0000000000000000 [ 250.239135][ T30] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000016516 [ 250.247201][ T30] R13: ffffffffffffffff R14: 00007fb721c00000 R15: 00000000000161d5 [ 250.255366][ T30] [ 250.258479][ T30] INFO: task syz-executor.0:6157 blocked for more than 143 seconds. [ 250.266585][ T30] Not tainted syzkaller #0 [ 250.271767][ T30] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. [ 250.280554][ T30] task:syz-executor.0 state:D stack:28384 pid:6157 tgid:6150 ppid:6031 task_flags:0x400140 flags:0x00080002 [ 250.292648][ T30] Call Trace: [ 250.295989][ T30] [ 250.299077][ T30] __schedule+0x17b4/0x5680 [ 250.303599][ T30] ? __lock_acquire+0x6b5/0x2cf0 [ 250.308534][ T30] ? bdev_file_open_by_dev+0x181/0x240 [ 250.314046][ T30] ? disk_scan_partitions+0x1c1/0x2c0 [ 250.319518][ T30] ? blkdev_ioctl+0x528/0x740 [ 250.324297][ T30] ? entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 250.330457][ T30] ? __pfx___schedule+0x10/0x10 [ 250.335354][ T30] ? schedule+0x90/0x360 [ 250.339683][ T30] schedule+0x164/0x360 [ 250.343851][ T30] schedule_preempt_disabled+0x13/0x30 [ 250.349833][ T30] __mutex_lock+0x7f5/0x1550 [ 250.354575][ T30] ? __mutex_lock+0x606/0x1550 [ 250.359673][ T30] ? bdev_open+0xe0/0xd30 [ 250.364205][ T30] ? __pfx___mutex_lock+0x10/0x10 [ 250.369412][ T30] ? alloc_file_pseudo_noaccount+0x259/0x310 [ 250.375528][ T30] ? disk_block_events+0xab/0x120 [ 250.380727][ T30] ? bdev_open+0xaf/0xd30 [ 250.385090][ T30] bdev_open+0xe0/0xd30 [ 250.389414][ T30] bdev_file_open_by_dev+0x1be/0x240 [ 250.394810][ T30] disk_scan_partitions+0x1c1/0x2c0 [ 250.400175][ T30] blkdev_common_ioctl+0x1ce4/0x3250 [ 250.405559][ T30] ? __pfx_blkdev_common_ioctl+0x10/0x10 [ 250.411359][ T30] ? kasan_quarantine_put+0xbb/0x1f0 [ 250.416761][ T30] ? tomoyo_path_number_perm+0x219/0x630 [ 250.422685][ T30] ? tomoyo_path_number_perm+0x219/0x630 [ 250.428605][ T30] ? do_vfs_ioctl+0x1166/0x1530 [ 250.433538][ T30] ? __pfx_do_vfs_ioctl+0x10/0x10 [ 250.438767][ T30] ? do_raw_spin_lock+0x12b/0x2f0 [ 250.444227][ T30] blkdev_ioctl+0x528/0x740 [ 250.448948][ T30] ? __pfx_blkdev_ioctl+0x10/0x10 [ 250.453997][ T30] ? __fget_files+0x2a/0x420 [ 250.458592][ T30] ? bpf_lsm_file_ioctl+0x9/0x20 [ 250.463605][ T30] ? __pfx_blkdev_ioctl+0x10/0x10 [ 250.468717][ T30] __se_sys_ioctl+0xfc/0x170 [ 250.473465][ T30] ? entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 250.479620][ T30] do_syscall_64+0x15f/0xf80 [ 250.484239][ T30] ? trace_irq_disable+0x3b/0x140 [ 250.489408][ T30] ? clear_bhb_loop+0x40/0x90 [ 250.494180][ T30] entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 250.500634][ T30] RIP: 0033:0x7fb72206cfb9 [ 250.505151][ T30] RSP: 002b:00007fb722d61078 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 [ 250.513770][ T30] RAX: ffffffffffffffda RBX: 00007fb7221ac050 RCX: 00007fb72206cfb9 [ 250.521992][ T30] RDX: 0000000000000000 RSI: 000000000000125f RDI: 0000000000000003 [ 250.530226][ T30] RBP: 00007fb7220e2b38 R08: 0000000000000000 R09: 0000000000000000 [ 250.538226][ T30] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 [ 250.546266][ T30] R13: 000000000000006e R14: 00007fb7221ac050 R15: 00007ffe13740e38 [ 250.554458][ T30] [ 250.558678][ T30] [ 250.558678][ T30] Showing all locks held in the system: [ 250.566486][ T30] 1 lock held by khungtaskd/30: [ 250.571384][ T30] #0: ffffffff8e95cba0 (rcu_read_lock){....}-{1:3}, at: debug_show_all_locks+0x2e/0x180 [ 250.581700][ T30] 1 lock held by syslogd/5193: [ 250.586502][ T30] #0: ffff8880b873ae60 (&rq->__lock){-.-.}-{2:2}, at: raw_spin_rq_lock_nested+0x31/0x150 [ 250.596941][ T30] 1 lock held by klogd/5200: [ 250.601800][ T30] #0: ffff8880b873ae60 (&rq->__lock){-.-.}-{2:2}, at: raw_spin_rq_lock_nested+0x31/0x150 [ 250.612026][ T30] 2 locks held by getty/5596: [ 250.616808][ T30] #0: ffff8880375b20a0 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x25/0x70 [ 250.626814][ T30] #1: ffffc9000322b2e8 (&ldata->atomic_read_lock){+.+.}-{4:4}, at: n_tty_read+0x45c/0x13a0 [ 250.636990][ T30] 1 lock held by udevd/6021: [ 250.641608][ T30] #0: ffff888027199350 (&disk->open_mutex){+.+.}-{4:4}, at: bdev_open+0xe0/0xd30 [ 250.650929][ T30] 1 lock held by syz-executor.0/6150: [ 250.656466][ T30] #0: ffff888027199350 (&disk->open_mutex){+.+.}-{4:4}, at: bdev_release+0x1a9/0x650 [ 250.666292][ T30] 1 lock held by syz-executor.0/6157: [ 250.671753][ T30] #0: ffff888027199350 (&disk->open_mutex){+.+.}-{4:4}, at: bdev_open+0xe0/0xd30 [ 250.681041][ T30] 1 lock held by syz-executor.0/6253: [ 250.686408][ T30] #0: ffff888027199350 (&disk->open_mutex){+.+.}-{4:4}, at: bdev_open+0xe0/0xd30 [ 250.695729][ T30] 1 lock held by syz-executor.0/6254: [ 250.701163][ T30] #0: ffff888027199350 (&disk->open_mutex){+.+.}-{4:4}, at: bdev_open+0xe0/0xd30 [ 250.710549][ T30] 1 lock held by syz-executor.0/6285: [ 250.715935][ T30] #0: ffff888027199350 (&disk->open_mutex){+.+.}-{4:4}, at: bdev_open+0xe0/0xd30 [ 250.725242][ T30] 1 lock held by syz-executor.0/6286: [ 250.730891][ T30] #0: ffff888027199350 (&disk->open_mutex){+.+.}-{4:4}, at: bdev_open+0xe0/0xd30 [ 250.740342][ T30] [ 250.742674][ T30] ============================================= [ 250.742674][ T30] [ 250.751580][ T30] NMI backtrace for cpu 0 [ 250.751605][ T30] CPU: 0 UID: 0 PID: 30 Comm: khungtaskd Not tainted syzkaller #0 PREEMPT(full) [ 250.751621][ T30] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/18/2026 [ 250.751629][ T30] Call Trace: [ 250.751635][ T30] [ 250.751641][ T30] dump_stack_lvl+0xe8/0x150 [ 250.751665][ T30] nmi_cpu_backtrace+0x274/0x2d0 [ 250.751683][ T30] ? __pfx_nmi_raise_cpu_backtrace+0x10/0x10 [ 250.751704][ T30] nmi_trigger_cpumask_backtrace+0x17a/0x300 [ 250.751722][ T30] sys_info+0x135/0x170 [ 250.751736][ T30] watchdog+0xfd3/0x1030 [ 250.751757][ T30] ? watchdog+0x1c9/0x1030 [ 250.751776][ T30] kthread+0x388/0x470 [ 250.751791][ T30] ? __pfx_watchdog+0x10/0x10 [ 250.751804][ T30] ? __pfx_kthread+0x10/0x10 [ 250.751818][ T30] ret_from_fork+0x514/0xb70 [ 250.751850][ T30] ? __pfx_ret_from_fork+0x10/0x10 [ 250.751870][ T30] ? __switch_to+0xc79/0x1410 [ 250.751888][ T30] ? __pfx_kthread+0x10/0x10 [ 250.751904][ T30] ret_from_fork_asm+0x1a/0x30 [ 250.751930][ T30] [ 250.751935][ T30] Sending NMI from CPU 0 to CPUs 1: [ 250.863473][ C1] NMI backtrace for cpu 1 [ 250.863491][ C1] CPU: 1 UID: 0 PID: 0 Comm: swapper/1 Not tainted syzkaller #0 PREEMPT(full) [ 250.863508][ C1] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/18/2026 [ 250.863517][ C1] RIP: 0010:check_preemption_disabled+0x1f/0xe0 [ 250.863549][ C1] Code: 90 90 90 90 90 90 90 90 90 90 90 55 41 57 41 56 53 65 8b 05 b7 e0 8c 07 65 8b 0d ac e0 8c 07 f7 c1 ff ff ff 7f 74 0c 5b 41 5e <41> 5f 5d e9 c9 d4 02 00 cc 9c 59 f7 c1 00 02 00 00 74 ea 65 4c 8b [ 250.863562][ C1] RSP: 0018:ffffc90000a08d78 EFLAGS: 00000006 [ 250.863577][ C1] RAX: 0000000000000001 RBX: 0000000000000000 RCX: 0000000080000103 [ 250.863587][ C1] RDX: 0000000093928200 RSI: ffffffff8e23790a RDI: ffffffff8c287660 [ 250.863597][ C1] RBP: ffffffff8193c991 R08: ffffffff8193c991 R09: ffff8880b873ae60 [ 250.863609][ C1] R10: dffffc0000000000 R11: fffffbfff2063a9f R12: 0000000000000000 [ 250.863619][ C1] R13: ffff8880b873ae60 R14: 0000000000000001 R15: 0000000000000046 [ 250.863629][ C1] FS: 0000000000000000(0000) GS:ffff888125356000(0000) knlGS:0000000000000000 [ 250.863641][ C1] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 250.863651][ C1] CR2: 000056352b18d660 CR3: 000000007ba54000 CR4: 00000000003526f0 [ 250.863665][ C1] Call Trace: [ 250.863674][ C1] [ 250.863681][ C1] ? raw_spin_rq_lock_nested+0x31/0x150 [ 250.863704][ C1] lock_acquire+0x116/0x350 [ 250.863729][ C1] _raw_spin_lock_nested+0x32/0x50 [ 250.863751][ C1] ? raw_spin_rq_lock_nested+0x31/0x150 [ 250.863772][ C1] raw_spin_rq_lock_nested+0x31/0x150 [ 250.863795][ C1] _nohz_idle_balance+0x35f/0x760 [ 250.863810][ C1] ? kvm_sched_clock_read+0x11/0x20 [ 250.863832][ C1] handle_softirqs+0x22a/0x840 [ 250.863852][ C1] ? __irq_exit_rcu+0xca/0x220 [ 250.863874][ C1] __irq_exit_rcu+0xca/0x220 [ 250.863895][ C1] irq_exit_rcu+0x9/0x30 [ 250.863914][ C1] sysvec_call_function_single+0xa3/0xc0 [ 250.863934][ C1] [ 250.863939][ C1] [ 250.863945][ C1] asm_sysvec_call_function_single+0x1a/0x20 [ 250.863962][ C1] RIP: 0010:pv_native_safe_halt+0xf/0x20 [ 250.863982][ C1] Code: 6c 78 02 c3 cc cc cc cc cc cc cc 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 f3 0f 1e fa 66 90 0f 00 2d c3 c1 19 00 fb f4 fc f3 02 00 cc cc cc cc cc cc cc cc cc cc cc cc 90 90 90 90 90 [ 250.863994][ C1] RSP: 0018:ffffc90000197e20 EFLAGS: 00000242 [ 250.864007][ C1] RAX: 00000000000b15fb RBX: ffffffff819a863a RCX: 0000000080000001 [ 250.864017][ C1] RDX: 0000000000000001 RSI: ffffffff8dfc37e7 RDI: ffffffff8c287660 [ 250.864027][ C1] RBP: ffffc90000197f10 R08: ffff8880b87339db R09: 1ffff110170e673b [ 250.864038][ C1] R10: dffffc0000000000 R11: ffffed10170e673c R12: 0000000000000001 [ 250.864049][ C1] R13: 1ffff11003b5f000 R14: 0000000000000001 R15: 1ffff11003b5f000 [ 250.864061][ C1] ? do_idle+0x36a/0x5f0 [ 250.864091][ C1] default_idle+0x9/0x20 [ 250.864105][ C1] default_idle_call+0x72/0xb0 [ 250.864119][ C1] do_idle+0x36a/0x5f0 [ 250.864139][ C1] ? _raw_spin_unlock_irqrestore+0x4c/0x80 [ 250.864160][ C1] ? __pfx_do_idle+0x10/0x10 [ 250.864182][ C1] ? _raw_spin_unlock_irqrestore+0x30/0x80 [ 250.864203][ C1] cpu_startup_entry+0x43/0x60 [ 250.864224][ C1] start_secondary+0x101/0x110 [ 250.864243][ C1] common_startup_64+0x13e/0x147 [ 250.864266][ C1] [ 251.189600][ T30] Kernel panic - not syncing: hung_task: blocked tasks [ 251.196732][ T30] CPU: 1 UID: 0 PID: 30 Comm: khungtaskd Not tainted syzkaller #0 PREEMPT(full) [ 251.205848][ T30] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/18/2026 [ 251.216070][ T30] Call Trace: [ 251.219531][ T30] [ 251.222449][ T30] vpanic+0x56c/0xa60 [ 251.226427][ T30] ? __pfx___schedule+0x10/0x10 [ 251.231369][ T30] ? __pfx_vpanic+0x10/0x10 [ 251.235961][ T30] ? nmi_trigger_cpumask_backtrace+0x1f4/0x300 [ 251.242389][ T30] panic+0xc5/0xd0 [ 251.246109][ T30] ? __pfx_panic+0x10/0x10 [ 251.250528][ T30] ? preempt_schedule_thunk+0x16/0x30 [ 251.255946][ T30] ? nmi_trigger_cpumask_backtrace+0x2bb/0x300 [ 251.262110][ T30] watchdog+0x102c/0x1030 [ 251.266544][ T30] ? watchdog+0x1c9/0x1030 [ 251.270983][ T30] kthread+0x388/0x470 [ 251.275162][ T30] ? __pfx_watchdog+0x10/0x10 [ 251.280097][ T30] ? __pfx_kthread+0x10/0x10 [ 251.284692][ T30] ret_from_fork+0x514/0xb70 [ 251.289279][ T30] ? __pfx_ret_from_fork+0x10/0x10 [ 251.294548][ T30] ? __switch_to+0xc79/0x1410 [ 251.299248][ T30] ? __pfx_kthread+0x10/0x10 [ 251.303834][ T30] ret_from_fork_asm+0x1a/0x30 [ 251.308685][ T30] [ 251.312574][ T30] Kernel Offset: disabled [ 251.317025][ T30] Rebooting in 86400 seconds..