[ 34.203950][ T599] netdevsim netdevsim0 netdevsim2 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 34.283943][ T599] netdevsim netdevsim0 netdevsim1 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 34.374544][ T599] netdevsim netdevsim0 netdevsim0 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 34.711005][ T599] bridge_slave_1: left allmulticast mode [ 34.711044][ T599] bridge_slave_1: left promiscuous mode [ 34.711332][ T599] bridge0: port 2(bridge_slave_1) entered disabled state [ 34.714726][ T599] bridge_slave_0: left allmulticast mode [ 34.714949][ T599] bridge_slave_0: left promiscuous mode [ 34.715029][ T599] bridge0: port 1(bridge_slave_0) entered disabled state [ 34.814262][ T599] bond0 (unregistering): (slave bond_slave_0): Releasing backup interface [ 34.852356][ T599] bond0 (unregistering): (slave bond_slave_1): Releasing backup interface [ 34.861820][ T599] bond0 (unregistering): Released all slaves [ 34.926021][ T599] hsr_slave_0: left promiscuous mode [ 34.927329][ T599] hsr_slave_1: left promiscuous mode [ 34.928769][ T599] batman_adv: batadv0: Interface deactivated: batadv_slave_0 [ 34.930158][ T599] batman_adv: batadv0: Removing interface: batadv_slave_0 [ 34.934105][ T599] batman_adv: batadv0: Interface deactivated: batadv_slave_1 [ 34.935601][ T599] batman_adv: batadv0: Removing interface: batadv_slave_1 [ 34.940410][ T599] veth1_macvtap: left promiscuous mode [ 34.941747][ T599] veth0_macvtap: left promiscuous mode [ 34.942854][ T599] veth1_vlan: left promiscuous mode [ 34.943893][ T599] veth0_vlan: left promiscuous mode [ 35.036938][ T599] team0 (unregistering): Port device team_slave_1 removed [ 35.040479][ T599] team0 (unregistering): Port device team_slave_0 removed [ 35.082614][ T4393] 8021q: adding VLAN 0 to HW filter on device eth0 [ 35.196807][ T4393] 8021q: adding VLAN 0 to HW filter on device eth1 [ 35.311968][ T4393] 8021q: adding VLAN 0 to HW filter on device eth2 [ 35.437383][ T4393] 8021q: adding VLAN 0 to HW filter on device eth3 Warning: Permanently added '10.128.1.146' (ED25519) to the list of known hosts. 1970/01/01 00:00:37 ignoring optional flag "type"="gce" 1970/01/01 00:00:37 parsed 1 programs 1970/01/01 00:00:37 executed programs: 0 [ 37.941258][ T50] Bluetooth: hci0: unexpected cc 0x0c03 length: 249 > 1 [ 37.942687][ T50] Bluetooth: hci0: unexpected cc 0x1003 length: 249 > 9 [ 37.942858][ T50] Bluetooth: hci0: unexpected cc 0x1001 length: 249 > 9 [ 37.943152][ T50] Bluetooth: hci0: unexpected cc 0x0c23 length: 249 > 4 [ 37.943351][ T50] Bluetooth: hci0: unexpected cc 0x0c38 length: 249 > 2 [ 38.078353][ T4868] bridge0: port 1(bridge_slave_0) entered blocking state [ 38.078391][ T4868] bridge0: port 1(bridge_slave_0) entered disabled state [ 38.078445][ T4868] bridge_slave_0: entered allmulticast mode [ 38.078870][ T4868] bridge_slave_0: entered promiscuous mode [ 38.079489][ T4868] bridge0: port 2(bridge_slave_1) entered blocking state [ 38.079508][ T4868] bridge0: port 2(bridge_slave_1) entered disabled state [ 38.079557][ T4868] bridge_slave_1: entered allmulticast mode [ 38.079935][ T4868] bridge_slave_1: entered promiscuous mode [ 38.090027][ T4868] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 38.091559][ T4868] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 38.099846][ T4868] team0: Port device team_slave_0 added [ 38.100525][ T4868] team0: Port device team_slave_1 added [ 38.108415][ T4868] batman_adv: batadv0: Adding interface: batadv_slave_0 [ 38.108438][ T4868] 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. [ 38.108455][ T4868] batman_adv: batadv0: Not using interface batadv_slave_0 (retrying later): interface not active [ 38.109306][ T4868] batman_adv: batadv0: Adding interface: batadv_slave_1 [ 38.109314][ T4868] 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. [ 38.109328][ T4868] batman_adv: batadv0: Not using interface batadv_slave_1 (retrying later): interface not active [ 38.129361][ T4868] hsr_slave_0: entered promiscuous mode [ 38.129663][ T4868] hsr_slave_1: entered promiscuous mode [ 38.540352][ T4868] netdevsim netdevsim0 netdevsim0: renamed from eth0 [ 38.542833][ T4868] 8021q: adding VLAN 0 to HW filter on device netdevsim0 [ 38.544415][ T4868] netdevsim netdevsim0 netdevsim1: renamed from eth1 [ 38.546819][ T4868] 8021q: adding VLAN 0 to HW filter on device netdevsim1 [ 38.548636][ T4868] netdevsim netdevsim0 netdevsim2: renamed from eth2 [ 38.550713][ T4868] 8021q: adding VLAN 0 to HW filter on device netdevsim2 [ 38.553985][ T4868] netdevsim netdevsim0 netdevsim3: renamed from eth3 [ 38.557956][ T4868] 8021q: adding VLAN 0 to HW filter on device netdevsim3 [ 38.574096][ T4868] bridge0: port 2(bridge_slave_1) entered blocking state [ 38.574149][ T4868] bridge0: port 2(bridge_slave_1) entered forwarding state [ 38.574224][ T4868] bridge0: port 1(bridge_slave_0) entered blocking state [ 38.574251][ T4868] bridge0: port 1(bridge_slave_0) entered forwarding state [ 38.589813][ T4868] 8021q: adding VLAN 0 to HW filter on device bond0 [ 38.593923][ T599] bridge0: port 1(bridge_slave_0) entered disabled state [ 38.595372][ T599] bridge0: port 2(bridge_slave_1) entered disabled state [ 38.600538][ T4868] 8021q: adding VLAN 0 to HW filter on device team0 [ 38.602925][ T1516] bridge0: port 1(bridge_slave_0) entered blocking state [ 38.602963][ T1516] bridge0: port 1(bridge_slave_0) entered forwarding state [ 38.607572][ T1516] bridge0: port 2(bridge_slave_1) entered blocking state [ 38.607616][ T1516] bridge0: port 2(bridge_slave_1) entered forwarding state [ 38.718520][ T4868] 8021q: adding VLAN 0 to HW filter on device batadv0 [ 38.733525][ T4868] veth0_vlan: entered promiscuous mode [ 38.735643][ T4868] veth1_vlan: entered promiscuous mode [ 38.748290][ T4868] veth0_macvtap: entered promiscuous mode [ 38.749698][ T4868] veth1_macvtap: entered promiscuous mode [ 38.754250][ T4868] batman_adv: batadv0: Interface activated: batadv_slave_0 [ 38.755318][ T4868] batman_adv: batadv0: Interface activated: batadv_slave_1 [ 38.764195][ T599] netdevsim netdevsim0 netdevsim0: set [1, 0] type 2 family 0 port 6081 - 0 [ 38.764494][ T599] netdevsim netdevsim0 netdevsim1: set [1, 0] type 2 family 0 port 6081 - 0 [ 38.764519][ T599] netdevsim netdevsim0 netdevsim2: set [1, 0] type 2 family 0 port 6081 - 0 [ 38.764537][ T599] netdevsim netdevsim0 netdevsim3: set [1, 0] type 2 family 0 port 6081 - 0 [ 38.891377][ T4982] nbd0: detected capacity change from 0 to 131072 [ 39.638292][ T50] block nbd0: Receive control failed (result -104) [ 40.011308][ T50] Bluetooth: hci0: command tx timeout [ 42.090888][ T50] Bluetooth: hci0: command tx timeout [ 44.171138][ T50] Bluetooth: hci0: command tx timeout [ 46.250842][ T50] Bluetooth: hci0: command tx timeout [ 64.491963][ T1591] ieee802154 phy0 wpan0: encryption failed: -22 [ 64.492025][ T1591] ieee802154 phy1 wpan1: encryption failed: -22 [ 64.496393][ T26] cfg80211: failed to load regulatory.db [ 68.971983][ T4405] block nbd0: Possible stuck request 00000000997e6764: control (read@0,4096B). Runtime 30 seconds 1970/01/01 00:01:33 executed programs: 1 [ 94.817159][ T4723] Bluetooth: hci1: unexpected cc 0x0c03 length: 249 > 1 [ 94.818986][ T4723] Bluetooth: hci1: unexpected cc 0x1003 length: 249 > 9 [ 94.819734][ T4723] Bluetooth: hci1: unexpected cc 0x1001 length: 249 > 9 [ 94.820063][ T4723] Bluetooth: hci1: unexpected cc 0x0c23 length: 249 > 4 [ 94.820253][ T4723] Bluetooth: hci1: unexpected cc 0x0c38 length: 249 > 2 [ 94.953646][ T5028] bridge0: port 1(bridge_slave_0) entered blocking state [ 94.953728][ T5028] bridge0: port 1(bridge_slave_0) entered disabled state [ 94.953779][ T5028] bridge_slave_0: entered allmulticast mode [ 94.954206][ T5028] bridge_slave_0: entered promiscuous mode [ 94.955434][ T5028] bridge0: port 2(bridge_slave_1) entered blocking state [ 94.955480][ T5028] bridge0: port 2(bridge_slave_1) entered disabled state [ 94.955577][ T5028] bridge_slave_1: entered allmulticast mode [ 94.955958][ T5028] bridge_slave_1: entered promiscuous mode [ 94.967316][ T5028] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 94.968225][ T5028] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 94.977338][ T5028] team0: Port device team_slave_0 added [ 94.978073][ T5028] team0: Port device team_slave_1 added [ 94.985412][ T5028] batman_adv: batadv0: Adding interface: batadv_slave_0 [ 94.985443][ T5028] 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. [ 94.985460][ T5028] batman_adv: batadv0: Not using interface batadv_slave_0 (retrying later): interface not active [ 94.985959][ T5028] batman_adv: batadv0: Adding interface: batadv_slave_1 [ 94.985966][ T5028] 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. [ 94.985980][ T5028] batman_adv: batadv0: Not using interface batadv_slave_1 (retrying later): interface not active [ 95.005353][ T5028] hsr_slave_0: entered promiscuous mode [ 95.005652][ T5028] hsr_slave_1: entered promiscuous mode [ 95.005838][ T5028] debugfs: 'hsr0' already exists in 'hsr' [ 95.005885][ T5028] Cannot create hsr debugfs directory [ 95.065405][ T5028] netdevsim netdevsim0 netdevsim3 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 95.104366][ T5028] netdevsim netdevsim0 netdevsim2 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 95.174449][ T5028] netdevsim netdevsim0 netdevsim1 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 95.255151][ T5028] netdevsim netdevsim0 netdevsim0 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 95.364185][ T5028] netdevsim netdevsim0 netdevsim0: renamed from eth0 [ 95.366449][ T5028] 8021q: adding VLAN 0 to HW filter on device netdevsim0 [ 95.368108][ T5028] netdevsim netdevsim0 netdevsim1: renamed from eth1 [ 95.370474][ T5028] 8021q: adding VLAN 0 to HW filter on device netdevsim1 [ 95.372319][ T5028] netdevsim netdevsim0 netdevsim2: renamed from eth2 [ 95.374470][ T5028] 8021q: adding VLAN 0 to HW filter on device netdevsim2 [ 95.374823][ T5028] netdevsim netdevsim0 netdevsim3: renamed from eth3 [ 95.376703][ T5028] 8021q: adding VLAN 0 to HW filter on device netdevsim3 [ 95.383327][ T5028] bridge0: port 2(bridge_slave_1) entered blocking state [ 95.383365][ T5028] bridge0: port 2(bridge_slave_1) entered forwarding state [ 95.383436][ T5028] bridge0: port 1(bridge_slave_0) entered blocking state [ 95.383464][ T5028] bridge0: port 1(bridge_slave_0) entered forwarding state [ 95.399113][ T5028] 8021q: adding VLAN 0 to HW filter on device bond0 [ 95.403149][ T599] bridge0: port 1(bridge_slave_0) entered disabled state [ 95.404431][ T599] bridge0: port 2(bridge_slave_1) entered disabled state [ 95.408466][ T5028] 8021q: adding VLAN 0 to HW filter on device team0 [ 95.410654][ T36] bridge0: port 1(bridge_slave_0) entered blocking state [ 95.410691][ T36] bridge0: port 1(bridge_slave_0) entered forwarding state [ 95.414586][ T521] bridge0: port 2(bridge_slave_1) entered blocking state [ 95.414620][ T521] bridge0: port 2(bridge_slave_1) entered forwarding state [ 95.510122][ T5028] 8021q: adding VLAN 0 to HW filter on device batadv0 [ 95.520792][ T5028] veth0_vlan: entered promiscuous mode [ 95.522504][ T5028] veth1_vlan: entered promiscuous mode [ 95.528417][ T5028] veth0_macvtap: entered promiscuous mode [ 95.529456][ T5028] veth1_macvtap: entered promiscuous mode [ 95.534088][ T5028] batman_adv: batadv0: Interface activated: batadv_slave_0 [ 95.535142][ T5028] batman_adv: batadv0: Interface activated: batadv_slave_1 [ 95.536628][ T599] netdevsim netdevsim0 netdevsim0: set [1, 0] type 2 family 0 port 6081 - 0 [ 95.536787][ T599] netdevsim netdevsim0 netdevsim1: set [1, 0] type 2 family 0 port 6081 - 0 [ 95.536858][ T599] netdevsim netdevsim0 netdevsim2: set [1, 0] type 2 family 0 port 6081 - 0 [ 95.537418][ T599] netdevsim netdevsim0 netdevsim3: set [1, 0] type 2 family 0 port 6081 - 0 [ 96.890887][ T4723] Bluetooth: hci1: command tx timeout [ 98.970849][ T4723] Bluetooth: hci1: command tx timeout [ 99.051151][ T4405] block nbd0: Possible stuck request 00000000997e6764: control (read@0,4096B). Runtime 60 seconds [ 101.060850][ T4723] Bluetooth: hci1: command tx timeout [ 103.130877][ T4723] Bluetooth: hci1: command tx timeout [ 125.931865][ T1591] ieee802154 phy0 wpan0: encryption failed: -22 [ 125.931917][ T1591] ieee802154 phy1 wpan1: encryption failed: -22 [ 129.150898][ T4405] block nbd0: Possible stuck request 00000000997e6764: control (read@0,4096B). Runtime 90 seconds 1970/01/01 00:02:30 executed programs: 2 [ 151.587850][ T50] Bluetooth: hci2: unexpected cc 0x0c03 length: 249 > 1 [ 151.589317][ T50] Bluetooth: hci2: unexpected cc 0x1003 length: 249 > 9 [ 151.590071][ T50] Bluetooth: hci2: unexpected cc 0x1001 length: 249 > 9 [ 151.590404][ T50] Bluetooth: hci2: unexpected cc 0x0c23 length: 249 > 4 [ 151.590611][ T50] Bluetooth: hci2: unexpected cc 0x0c38 length: 249 > 2 [ 151.728845][ T5069] bridge0: port 1(bridge_slave_0) entered blocking state [ 151.728926][ T5069] bridge0: port 1(bridge_slave_0) entered disabled state [ 151.729016][ T5069] bridge_slave_0: entered allmulticast mode [ 151.729446][ T5069] bridge_slave_0: entered promiscuous mode [ 151.730230][ T5069] bridge0: port 2(bridge_slave_1) entered blocking state [ 151.730274][ T5069] bridge0: port 2(bridge_slave_1) entered disabled state [ 151.730320][ T5069] bridge_slave_1: entered allmulticast mode [ 151.730697][ T5069] bridge_slave_1: entered promiscuous mode [ 151.741226][ T5069] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 151.742083][ T5069] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 151.749734][ T5069] team0: Port device team_slave_0 added [ 151.750481][ T5069] team0: Port device team_slave_1 added [ 151.757717][ T5069] batman_adv: batadv0: Adding interface: batadv_slave_0 [ 151.757736][ T5069] 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. [ 151.757750][ T5069] batman_adv: batadv0: Not using interface batadv_slave_0 (retrying later): interface not active [ 151.758255][ T5069] batman_adv: batadv0: Adding interface: batadv_slave_1 [ 151.758261][ T5069] 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. [ 151.758272][ T5069] batman_adv: batadv0: Not using interface batadv_slave_1 (retrying later): interface not active [ 151.779340][ T5069] hsr_slave_0: entered promiscuous mode [ 151.779650][ T5069] hsr_slave_1: entered promiscuous mode [ 151.779816][ T5069] debugfs: 'hsr0' already exists in 'hsr' [ 151.779826][ T5069] Cannot create hsr debugfs directory [ 151.856863][ T5069] netdevsim netdevsim0 netdevsim3 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 151.914230][ T5069] netdevsim netdevsim0 netdevsim2 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 151.994009][ T5069] netdevsim netdevsim0 netdevsim1 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 152.044901][ T5069] netdevsim netdevsim0 netdevsim0 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 152.164462][ T5069] netdevsim netdevsim0 netdevsim0: renamed from eth0 [ 152.166679][ T5069] 8021q: adding VLAN 0 to HW filter on device netdevsim0 [ 152.167054][ T5069] netdevsim netdevsim0 netdevsim1: renamed from eth1 [ 152.168877][ T5069] 8021q: adding VLAN 0 to HW filter on device netdevsim1 [ 152.169950][ T5069] netdevsim netdevsim0 netdevsim2: renamed from eth2 [ 152.172374][ T5069] 8021q: adding VLAN 0 to HW filter on device netdevsim2 [ 152.172680][ T5069] netdevsim netdevsim0 netdevsim3: renamed from eth3 [ 152.174382][ T5069] 8021q: adding VLAN 0 to HW filter on device netdevsim3 [ 152.181256][ T5069] bridge0: port 2(bridge_slave_1) entered blocking state [ 152.181319][ T5069] bridge0: port 2(bridge_slave_1) entered forwarding state [ 152.181429][ T5069] bridge0: port 1(bridge_slave_0) entered blocking state [ 152.181470][ T5069] bridge0: port 1(bridge_slave_0) entered forwarding state [ 152.197233][ T5069] 8021q: adding VLAN 0 to HW filter on device bond0 [ 152.200282][ T521] bridge0: port 1(bridge_slave_0) entered disabled state [ 152.201805][ T521] bridge0: port 2(bridge_slave_1) entered disabled state [ 152.205668][ T5069] 8021q: adding VLAN 0 to HW filter on device team0 [ 152.208191][ T521] bridge0: port 1(bridge_slave_0) entered blocking state [ 152.208238][ T521] bridge0: port 1(bridge_slave_0) entered forwarding state [ 152.212164][ T521] bridge0: port 2(bridge_slave_1) entered blocking state [ 152.212201][ T521] bridge0: port 2(bridge_slave_1) entered forwarding state [ 152.307302][ T5069] 8021q: adding VLAN 0 to HW filter on device batadv0 [ 152.322564][ T5069] veth0_vlan: entered promiscuous mode [ 152.324353][ T5069] veth1_vlan: entered promiscuous mode [ 152.332173][ T5069] veth0_macvtap: entered promiscuous mode [ 152.333224][ T5069] veth1_macvtap: entered promiscuous mode [ 152.336748][ T5069] batman_adv: batadv0: Interface activated: batadv_slave_0 [ 152.338229][ T5069] batman_adv: batadv0: Interface activated: batadv_slave_1 [ 152.341789][ T599] netdevsim netdevsim0 netdevsim0: set [1, 0] type 2 family 0 port 6081 - 0 [ 152.341840][ T599] netdevsim netdevsim0 netdevsim1: set [1, 0] type 2 family 0 port 6081 - 0 [ 152.341876][ T599] netdevsim netdevsim0 netdevsim2: set [1, 0] type 2 family 0 port 6081 - 0 [ 152.341896][ T599] netdevsim netdevsim0 netdevsim3: set [1, 0] type 2 family 0 port 6081 - 0 [ 153.610896][ T50] Bluetooth: hci2: command tx timeout [ 155.690858][ T50] Bluetooth: hci2: command tx timeout [ 157.780843][ T50] Bluetooth: hci2: command tx timeout [ 159.211275][ T4405] block nbd0: Possible stuck request 00000000997e6764: control (read@0,4096B). Runtime 120 seconds [ 159.851370][ T50] Bluetooth: hci2: command tx timeout [ 163.850976][ T50] Bluetooth: hci0: command 0x0406 tx timeout [ 187.371161][ T1591] ieee802154 phy0 wpan0: encryption failed: -22 [ 187.371208][ T1591] ieee802154 phy1 wpan1: encryption failed: -22 [ 189.290992][ T4405] block nbd0: Possible stuck request 00000000997e6764: control (read@0,4096B). Runtime 150 seconds [ 193.130951][ T31] INFO: task udevd:43 ** replaying previous printk message ** [ 193.130951][ T31] INFO: task udevd:4337 blocked for more than 143 seconds. [ 193.130980][ T31] Not tainted syzkaller #0 [ 193.131002][ T31] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. [ 193.131008][ T31] task:udevd state:D stack:0 pid:4337 tgid:4337 ppid:1 task_flags:0x400140 flags:0x00800000 [ 193.131025][ T31] Call trace: [ 193.131030][ T31] __switch_to+0x2b0/0x6e0 (T) [ 193.131048][ T31] __schedule+0x1c04/0x2db8 [ 193.131059][ T31] schedule+0x13c/0x20c [ 193.131069][ T31] schedule_preempt_disabled+0x18/0x2c [ 193.131079][ T31] __mutex_lock+0x4fc/0xed0 [ 193.131090][ T31] mutex_lock_nested+0x24/0x30 [ 193.131100][ T31] bdev_open+0xc4/0x880 [ 193.131112][ T31] blkdev_open+0x2d4/0x408 [ 193.131120][ T31] do_dentry_open+0x5c4/0xfb8 [ 193.131131][ T31] vfs_open+0x44/0x2dc [ 193.131140][ T31] path_openat+0x22d4/0x2b88 [ 193.131149][ T31] do_file_open+0x1c8/0x2e8 [ 193.131157][ T31] do_sys_openat2+0x114/0x1e8 [ 193.131166][ T31] do_sys_open+0xac/0xdc [ 193.131176][ T31] __arm64_sys_openat+0xa0/0xbc [ 193.131185][ T31] invoke_syscall+0x98/0x244 [ 193.131196][ T31] el0_svc_common+0xec/0x23c [ 193.131207][ T31] do_el0_svc+0x4c/0x5c [ 193.131216][ T31] el0_svc+0x64/0x260 [ 193.131224][ T31] el0t_64_sync_handler+0x48/0x148 [ 193.131232][ T31] el0t_64_sync+0x198/0x19c [ 193.131257][ T31] INFO: task syz-executor.0:4972 blocked for more than 143 seconds. [ 193.131263][ T31] Not tainted syzkaller #0 [ 193.131268][ T31] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. [ 193.131271][ T31] task:syz-executor.0 state:D stack:0 pid:4972 tgid:4971 ppid:4868 task_flags:0x400140 flags:0x00000019 [ 193.131283][ T31] Call trace: [ 193.131285][ T31] __switch_to+0x2b0/0x6e0 (T) [ 193.131296][ T31] __schedule+0x1c04/0x2db8 [ 193.131305][ T31] schedule+0x13c/0x20c [ 193.131315][ T31] schedule_preempt_disabled+0x18/0x2c [ 193.131325][ T31] __mutex_lock+0x4fc/0xed0 [ 193.131335][ T31] mutex_lock_nested+0x24/0x30 [ 193.131345][ T31] bdev_release+0x128/0x328 [ 193.131356][ T31] blkdev_release+0x20/0x34 [ 193.131363][ T31] __fput+0x338/0x74c [ 193.131370][ T31] ____fput+0x20/0x30 [ 193.131378][ T31] task_work_run+0x1cc/0x25c [ 193.131388][ T31] get_signal+0xf30/0x1094 [ 193.131396][ T31] arch_do_signal_or_restart+0x288/0x444c [ 193.131407][ T31] exit_to_user_mode_loop+0x70/0x17c [ 193.131415][ T31] el0_svc+0x18c/0x260 [ 193.131423][ T31] el0t_64_sync_handler+0x48/0x148 [ 193.131431][ T31] el0t_64_sync+0x198/0x19c [ 193.131447][ T31] [ 193.131447][ T31] Showing all locks held in the system: [ 193.131453][ T31] 1 lock held by khungtaskd/31: [ 193.131458][ T31] #0: ffff800088bf70c0 (rcu_read_lock){....}-{1:3}, at: debug_show_all_locks+0x4c/0x188 [ 193.131487][ T31] 2 locks held by pr/ttyAMA-1/41: [ 193.131498][ T31] 1 lock held by udevd/4337: [ 193.131502][ T31] #0: ffff0000c7c30350 (&disk->open_mutex){+.+.}-{4:4}, at: bdev_open+0xc4/0x880 [ 193.131529][ T31] 2 locks held by getty/4486: [ 193.131534][ T31] #0: ffff0000d3ef30a0 (&tty->ldisc_sem){++++}-{0:0}, at: ldsem_down_read+0x3c/0x4c [ 193.131554][ T31] #1: ffff8000923ab2e8 (&ldata->atomic_read_lock){+.+.}-{4:4}, at: n_tty_read+0x348/0xf70 [ 193.131578][ T31] 1 lock held by udevd/4785: [ 193.131583][ T31] #0: ffff0000c7c30350 (&disk->open_mutex){+.+.}-{4:4}, at: bdev_open+0xc4/0x880 [ 193.131605][ T31] 1 lock held by syz-executor.0/4972: [ 193.131610][ T31] #0: ffff0000c7c30350 (&disk->open_mutex){+.+.}-{4:4}, at: bdev_release+0x128/0x328 [ 193.131632][ T31] 1 lock held by syz-executor.0/5061: [ 193.131637][ T31] #0: ffff0000c7c30350 (&disk->open_mutex){+.+.}-{4:4}, at: bdev_open+0xc4/0x880 [ 193.131659][ T31] 1 lock held by syz-executor.0/5103: [ 193.131663][ T31] #0: ffff0000c7c30350 (&disk->open_mutex){+.+.}-{4:4}, at: bdev_open+0xc4/0x880 [ 193.131686][ T31] [ 193.131688][ T31] ============================================= [ 193.131688][ T31] [ 193.131693][ T31] Kernel panic - not syncing: hung_task: blocked tasks [ 193.193699][ T31] CPU: 0 UID: 0 PID: 31 Comm: khungtaskd Not tainted syzkaller #0 PREEMPT [ 193.195031][ T31] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/02/2026 [ 193.196608][ T31] Call trace: [ 193.197112][ T31] show_stack+0x2c/0x3c (C) [ 193.197897][ T31] __dump_stack+0x30/0x40 [ 193.198667][ T31] dump_stack_lvl+0x30/0x12c [ 193.199406][ T31] dump_stack+0x1c/0x28 [ 193.200051][ T31] vpanic+0x594/0xaf8 [ 193.200722][ T31] vpanic+0x0/0xaf8 [ 193.201316][ T31] hung_task_panic+0x0/0x2c [ 193.202033][ T31] kthread+0x304/0x3d4 [ 193.202651][ T31] ret_from_fork+0x10/0x20 [ 193.203333][ T31] SMP: stopping secondary CPUs [ 193.204078][ T31] Kernel Offset: disabled [ 193.204715][ T31] CPU features: 0x0a000000,003c0008,27020501,5427fea7 [ 193.205778][ T31] Memory Limit: none [ 193.453567][ T31] Rebooting in 86400 seconds..