[ 27.465257][ T3386] netdevsim netdevsim0 netdevsim2 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 27.575697][ T3386] netdevsim netdevsim0 netdevsim1 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 27.656328][ T3386] netdevsim netdevsim0 netdevsim0 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 27.972364][ T3386] bridge_slave_1: left allmulticast mode [ 27.972404][ T3386] bridge_slave_1: left promiscuous mode [ 27.972760][ T3386] bridge0: port 2(bridge_slave_1) entered disabled state [ 27.975912][ T3386] bridge_slave_0: left allmulticast mode [ 27.975940][ T3386] bridge_slave_0: left promiscuous mode [ 27.976013][ T3386] bridge0: port 1(bridge_slave_0) entered disabled state [ 28.147604][ T3386] bond0 (unregistering): (slave bond_slave_0): Releasing backup interface [ 28.164290][ T3386] bond0 (unregistering): (slave bond_slave_1): Releasing backup interface [ 28.203007][ T3386] bond0 (unregistering): Released all slaves [ 28.268118][ T3386] hsr_slave_0: left promiscuous mode [ 28.269562][ T3386] hsr_slave_1: left promiscuous mode [ 28.269834][ T3386] batman_adv: batadv0: Interface deactivated: batadv_slave_0 [ 28.269858][ T3386] batman_adv: batadv0: Removing interface: batadv_slave_0 [ 28.273875][ T3386] batman_adv: batadv0: Interface deactivated: batadv_slave_1 [ 28.275407][ T3386] batman_adv: batadv0: Removing interface: batadv_slave_1 [ 28.281620][ T3386] veth1_macvtap: left promiscuous mode [ 28.281670][ T3386] veth0_macvtap: left promiscuous mode [ 28.281707][ T3386] veth1_vlan: left promiscuous mode [ 28.281736][ T3386] veth0_vlan: left promiscuous mode [ 28.367355][ T3386] team0 (unregistering): Port device team_slave_1 removed [ 28.370866][ T3386] team0 (unregistering): Port device team_slave_0 removed [ 28.417148][ T4398] 8021q: adding VLAN 0 to HW filter on device eth0 [ 28.538506][ T4398] 8021q: adding VLAN 0 to HW filter on device eth1 [ 28.650314][ T4398] 8021q: adding VLAN 0 to HW filter on device eth2 [ 28.759114][ T4398] 8021q: adding VLAN 0 to HW filter on device eth3 Warning: Permanently added '10.128.1.124' (ED25519) to the list of known hosts. 1970/01/01 00:00:31 ignoring optional flag "type"="gce" 1970/01/01 00:00:31 parsed 1 programs 1970/01/01 00:00:31 executed programs: 0 [ 31.424554][ T4726] Bluetooth: hci0: unexpected cc 0x0c03 length: 249 > 1 [ 31.426317][ T4726] Bluetooth: hci0: unexpected cc 0x1003 length: 249 > 9 [ 31.427971][ T4726] Bluetooth: hci0: unexpected cc 0x1001 length: 249 > 9 [ 31.429636][ T4726] Bluetooth: hci0: unexpected cc 0x0c23 length: 249 > 4 [ 31.431210][ T4726] Bluetooth: hci0: unexpected cc 0x0c38 length: 249 > 2 [ 31.560274][ T4872] bridge0: port 1(bridge_slave_0) entered blocking state [ 31.560337][ T4872] bridge0: port 1(bridge_slave_0) entered disabled state [ 31.560388][ T4872] bridge_slave_0: entered allmulticast mode [ 31.560848][ T4872] bridge_slave_0: entered promiscuous mode [ 31.561595][ T4872] bridge0: port 2(bridge_slave_1) entered blocking state [ 31.561653][ T4872] bridge0: port 2(bridge_slave_1) entered disabled state [ 31.561731][ T4872] bridge_slave_1: entered allmulticast mode [ 31.562098][ T4872] bridge_slave_1: entered promiscuous mode [ 31.575131][ T4872] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 31.575965][ T4872] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 31.583013][ T4872] team0: Port device team_slave_0 added [ 31.583730][ T4872] team0: Port device team_slave_1 added [ 31.590414][ T4872] batman_adv: batadv0: Adding interface: batadv_slave_0 [ 31.590441][ T4872] 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. [ 31.590454][ T4872] batman_adv: batadv0: Not using interface batadv_slave_0 (retrying later): interface not active [ 31.590968][ T4872] batman_adv: batadv0: Adding interface: batadv_slave_1 [ 31.590975][ T4872] 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. [ 31.590988][ T4872] batman_adv: batadv0: Not using interface batadv_slave_1 (retrying later): interface not active [ 31.611082][ T4872] hsr_slave_0: entered promiscuous mode [ 31.611357][ T4872] hsr_slave_1: entered promiscuous mode [ 32.011897][ T4872] netdevsim netdevsim0 netdevsim0: renamed from eth0 [ 32.014307][ T4872] 8021q: adding VLAN 0 to HW filter on device netdevsim0 [ 32.016020][ T4872] netdevsim netdevsim0 netdevsim1: renamed from eth1 [ 32.018247][ T4872] 8021q: adding VLAN 0 to HW filter on device netdevsim1 [ 32.019988][ T4872] netdevsim netdevsim0 netdevsim2: renamed from eth2 [ 32.022324][ T4872] 8021q: adding VLAN 0 to HW filter on device netdevsim2 [ 32.024031][ T4872] netdevsim netdevsim0 netdevsim3: renamed from eth3 [ 32.026069][ T4872] 8021q: adding VLAN 0 to HW filter on device netdevsim3 [ 32.036968][ T4872] bridge0: port 2(bridge_slave_1) entered blocking state [ 32.037006][ T4872] bridge0: port 2(bridge_slave_1) entered forwarding state [ 32.037092][ T4872] bridge0: port 1(bridge_slave_0) entered blocking state [ 32.037125][ T4872] bridge0: port 1(bridge_slave_0) entered forwarding state [ 32.057134][ T4872] 8021q: adding VLAN 0 to HW filter on device bond0 [ 32.062299][ T40] bridge0: port 1(bridge_slave_0) entered disabled state [ 32.064680][ T40] bridge0: port 2(bridge_slave_1) entered disabled state [ 32.071094][ T4872] 8021q: adding VLAN 0 to HW filter on device team0 [ 32.073671][ T40] bridge0: port 1(bridge_slave_0) entered blocking state [ 32.073712][ T40] bridge0: port 1(bridge_slave_0) entered forwarding state [ 32.075918][ T3386] bridge0: port 2(bridge_slave_1) entered blocking state [ 32.075939][ T3386] bridge0: port 2(bridge_slave_1) entered forwarding state [ 32.089089][ T4872] hsr0: Slave A (hsr_slave_0) is not up; please bring it up to get a fully working HSR network [ 32.089126][ T4872] hsr0: Slave B (hsr_slave_1) is not up; please bring it up to get a fully working HSR network [ 32.181300][ T4872] 8021q: adding VLAN 0 to HW filter on device batadv0 [ 32.197192][ T4872] veth0_vlan: entered promiscuous mode [ 32.199695][ T4872] veth1_vlan: entered promiscuous mode [ 32.208781][ T4872] veth0_macvtap: entered promiscuous mode [ 32.209833][ T4872] veth1_macvtap: entered promiscuous mode [ 32.214596][ T4872] batman_adv: batadv0: Interface activated: batadv_slave_0 [ 32.217857][ T4872] batman_adv: batadv0: Interface activated: batadv_slave_1 [ 32.222315][ T3386] netdevsim netdevsim0 netdevsim0: set [1, 0] type 2 family 0 port 6081 - 0 [ 32.223019][ T3308] netdevsim netdevsim0 netdevsim1: set [1, 0] type 2 family 0 port 6081 - 0 [ 32.223118][ T3308] netdevsim netdevsim0 netdevsim2: set [1, 0] type 2 family 0 port 6081 - 0 [ 32.223170][ T3308] netdevsim netdevsim0 netdevsim3: set [1, 0] type 2 family 0 port 6081 - 0 [ 32.382506][ T4990] nbd0: detected capacity change from 0 to 131072 [ 33.093797][ T4726] block nbd0: Receive control failed (result -104) [ 33.452678][ T4726] Bluetooth: hci0: command tx timeout [ 35.532190][ T4726] Bluetooth: hci0: command tx timeout [ 37.612731][ T4726] Bluetooth: hci0: command tx timeout [ 39.692189][ T4726] Bluetooth: hci0: command tx timeout [ 62.572944][ T4385] block nbd0: Possible stuck request 0000000009e057fe: control (read@0,4096B). Runtime 30 seconds [ 64.493409][ T1596] ieee802154 phy0 wpan0: encryption failed: -22 [ 64.493576][ T1596] ieee802154 phy1 wpan1: encryption failed: -22 [ 64.494714][ T26] cfg80211: failed to load regulatory.db 1970/01/01 00:01:27 executed programs: 1 [ 88.272367][ T50] Bluetooth: hci1: unexpected cc 0x0c03 length: 249 > 1 [ 88.272702][ T50] Bluetooth: hci1: unexpected cc 0x1003 length: 249 > 9 [ 88.272896][ T50] Bluetooth: hci1: unexpected cc 0x1001 length: 249 > 9 [ 88.273250][ T50] Bluetooth: hci1: unexpected cc 0x0c23 length: 249 > 4 [ 88.273443][ T50] Bluetooth: hci1: unexpected cc 0x0c38 length: 249 > 2 [ 88.407312][ T5036] bridge0: port 1(bridge_slave_0) entered blocking state [ 88.407378][ T5036] bridge0: port 1(bridge_slave_0) entered disabled state [ 88.407471][ T5036] bridge_slave_0: entered allmulticast mode [ 88.407905][ T5036] bridge_slave_0: entered promiscuous mode [ 88.408687][ T5036] bridge0: port 2(bridge_slave_1) entered blocking state [ 88.408738][ T5036] bridge0: port 2(bridge_slave_1) entered disabled state [ 88.408787][ T5036] bridge_slave_1: entered allmulticast mode [ 88.409164][ T5036] bridge_slave_1: entered promiscuous mode [ 88.419558][ T5036] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 88.420436][ T5036] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 88.429104][ T5036] team0: Port device team_slave_0 added [ 88.430129][ T5036] team0: Port device team_slave_1 added [ 88.437959][ T5036] batman_adv: batadv0: Adding interface: batadv_slave_0 [ 88.437980][ T5036] 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. [ 88.437994][ T5036] batman_adv: batadv0: Not using interface batadv_slave_0 (retrying later): interface not active [ 88.438463][ T5036] batman_adv: batadv0: Adding interface: batadv_slave_1 [ 88.438470][ T5036] 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. [ 88.438484][ T5036] batman_adv: batadv0: Not using interface batadv_slave_1 (retrying later): interface not active [ 88.459582][ T5036] hsr_slave_0: entered promiscuous mode [ 88.459873][ T5036] hsr_slave_1: entered promiscuous mode [ 88.460058][ T5036] debugfs: 'hsr0' already exists in 'hsr' [ 88.460097][ T5036] Cannot create hsr debugfs directory [ 88.527061][ T5036] netdevsim netdevsim0 netdevsim3 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 88.575518][ T5036] netdevsim netdevsim0 netdevsim2 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 88.655396][ T5036] netdevsim netdevsim0 netdevsim1 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 88.737041][ T5036] netdevsim netdevsim0 netdevsim0 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 88.855586][ T5036] netdevsim netdevsim0 netdevsim0: renamed from eth0 [ 88.857847][ T5036] 8021q: adding VLAN 0 to HW filter on device netdevsim0 [ 88.859401][ T5036] netdevsim netdevsim0 netdevsim1: renamed from eth1 [ 88.861819][ T5036] 8021q: adding VLAN 0 to HW filter on device netdevsim1 [ 88.863528][ T5036] netdevsim netdevsim0 netdevsim2: renamed from eth2 [ 88.865610][ T5036] 8021q: adding VLAN 0 to HW filter on device netdevsim2 [ 88.867134][ T5036] netdevsim netdevsim0 netdevsim3: renamed from eth3 [ 88.869362][ T5036] 8021q: adding VLAN 0 to HW filter on device netdevsim3 [ 88.876476][ T5036] bridge0: port 2(bridge_slave_1) entered blocking state [ 88.876514][ T5036] bridge0: port 2(bridge_slave_1) entered forwarding state [ 88.876587][ T5036] bridge0: port 1(bridge_slave_0) entered blocking state [ 88.876620][ T5036] bridge0: port 1(bridge_slave_0) entered forwarding state [ 88.889943][ T5036] 8021q: adding VLAN 0 to HW filter on device bond0 [ 88.894552][ T40] bridge0: port 1(bridge_slave_0) entered disabled state [ 88.895980][ T40] bridge0: port 2(bridge_slave_1) entered disabled state [ 88.899685][ T5036] 8021q: adding VLAN 0 to HW filter on device team0 [ 88.901937][ T3386] bridge0: port 1(bridge_slave_0) entered blocking state [ 88.901977][ T3386] bridge0: port 1(bridge_slave_0) entered forwarding state [ 88.905620][ T40] bridge0: port 2(bridge_slave_1) entered blocking state [ 88.905657][ T40] bridge0: port 2(bridge_slave_1) entered forwarding state [ 88.998102][ T5036] 8021q: adding VLAN 0 to HW filter on device batadv0 [ 89.014310][ T5036] veth0_vlan: entered promiscuous mode [ 89.016415][ T5036] veth1_vlan: entered promiscuous mode [ 89.022840][ T5036] veth0_macvtap: entered promiscuous mode [ 89.024313][ T5036] veth1_macvtap: entered promiscuous mode [ 89.027685][ T5036] batman_adv: batadv0: Interface activated: batadv_slave_0 [ 89.029394][ T5036] batman_adv: batadv0: Interface activated: batadv_slave_1 [ 89.033212][ T3308] netdevsim netdevsim0 netdevsim0: set [1, 0] type 2 family 0 port 6081 - 0 [ 89.033378][ T3308] netdevsim netdevsim0 netdevsim1: set [1, 0] type 2 family 0 port 6081 - 0 [ 89.033461][ T3308] netdevsim netdevsim0 netdevsim2: set [1, 0] type 2 family 0 port 6081 - 0 [ 89.033492][ T3308] netdevsim netdevsim0 netdevsim3: set [1, 0] type 2 family 0 port 6081 - 0 [ 90.332238][ T4726] Bluetooth: hci1: command tx timeout [ 92.412205][ T4726] Bluetooth: hci1: command tx timeout [ 92.652620][ T4385] block nbd0: Possible stuck request 0000000009e057fe: control (read@0,4096B). Runtime 60 seconds [ 93.097934][ T4341] udevd[4341]: worker [4793] /devices/virtual/block/nbd0 is taking a long time [ 94.502195][ T4726] Bluetooth: hci1: command tx timeout [ 96.572184][ T4726] Bluetooth: hci1: command tx timeout [ 122.733294][ T4385] block nbd0: Possible stuck request 0000000009e057fe: control (read@0,4096B). Runtime 90 seconds [ 125.932561][ T1596] ieee802154 phy0 wpan0: encryption failed: -22 [ 125.932605][ T1596] ieee802154 phy1 wpan1: encryption failed: -22 1970/01/01 00:02:24 executed programs: 2 [ 145.087960][ T50] Bluetooth: hci2: unexpected cc 0x0c03 length: 249 > 1 [ 145.088305][ T50] Bluetooth: hci2: unexpected cc 0x1003 length: 249 > 9 [ 145.088467][ T50] Bluetooth: hci2: unexpected cc 0x1001 length: 249 > 9 [ 145.088771][ T50] Bluetooth: hci2: unexpected cc 0x0c23 length: 249 > 4 [ 145.088987][ T50] Bluetooth: hci2: unexpected cc 0x0c38 length: 249 > 2 [ 145.225080][ T5078] bridge0: port 1(bridge_slave_0) entered blocking state [ 145.225157][ T5078] bridge0: port 1(bridge_slave_0) entered disabled state [ 145.225246][ T5078] bridge_slave_0: entered allmulticast mode [ 145.225650][ T5078] bridge_slave_0: entered promiscuous mode [ 145.226705][ T5078] bridge0: port 2(bridge_slave_1) entered blocking state [ 145.226744][ T5078] bridge0: port 2(bridge_slave_1) entered disabled state [ 145.226793][ T5078] bridge_slave_1: entered allmulticast mode [ 145.227187][ T5078] bridge_slave_1: entered promiscuous mode [ 145.238703][ T5078] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 145.239542][ T5078] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 145.247318][ T5078] team0: Port device team_slave_0 added [ 145.249053][ T5078] team0: Port device team_slave_1 added [ 145.256269][ T5078] batman_adv: batadv0: Adding interface: batadv_slave_0 [ 145.256288][ T5078] 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. [ 145.256304][ T5078] batman_adv: batadv0: Not using interface batadv_slave_0 (retrying later): interface not active [ 145.256792][ T5078] batman_adv: batadv0: Adding interface: batadv_slave_1 [ 145.256800][ T5078] 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. [ 145.256813][ T5078] batman_adv: batadv0: Not using interface batadv_slave_1 (retrying later): interface not active [ 145.276780][ T5078] hsr_slave_0: entered promiscuous mode [ 145.277069][ T5078] hsr_slave_1: entered promiscuous mode [ 145.277236][ T5078] debugfs: 'hsr0' already exists in 'hsr' [ 145.277246][ T5078] Cannot create hsr debugfs directory [ 145.317203][ T5078] netdevsim netdevsim0 netdevsim3 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 145.355727][ T5078] netdevsim netdevsim0 netdevsim2 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 145.416386][ T5078] netdevsim netdevsim0 netdevsim1 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 145.487165][ T5078] netdevsim netdevsim0 netdevsim0 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 145.605651][ T5078] netdevsim netdevsim0 netdevsim0: renamed from eth0 [ 145.608172][ T5078] 8021q: adding VLAN 0 to HW filter on device netdevsim0 [ 145.609804][ T5078] netdevsim netdevsim0 netdevsim1: renamed from eth1 [ 145.611847][ T5078] 8021q: adding VLAN 0 to HW filter on device netdevsim1 [ 145.612378][ T5078] netdevsim netdevsim0 netdevsim2: renamed from eth2 [ 145.614878][ T5078] 8021q: adding VLAN 0 to HW filter on device netdevsim2 [ 145.615508][ T5078] netdevsim netdevsim0 netdevsim3: renamed from eth3 [ 145.617122][ T5078] 8021q: adding VLAN 0 to HW filter on device netdevsim3 [ 145.624129][ T5078] bridge0: port 2(bridge_slave_1) entered blocking state [ 145.624172][ T5078] bridge0: port 2(bridge_slave_1) entered forwarding state [ 145.624244][ T5078] bridge0: port 1(bridge_slave_0) entered blocking state [ 145.624272][ T5078] bridge0: port 1(bridge_slave_0) entered forwarding state [ 145.637395][ T5078] 8021q: adding VLAN 0 to HW filter on device bond0 [ 145.640198][ T3386] bridge0: port 1(bridge_slave_0) entered disabled state [ 145.641499][ T3386] bridge0: port 2(bridge_slave_1) entered disabled state [ 145.648274][ T5078] 8021q: adding VLAN 0 to HW filter on device team0 [ 145.650002][ T3308] bridge0: port 1(bridge_slave_0) entered blocking state [ 145.650038][ T3308] bridge0: port 1(bridge_slave_0) entered forwarding state [ 145.654143][ T3564] bridge0: port 2(bridge_slave_1) entered blocking state [ 145.654184][ T3564] bridge0: port 2(bridge_slave_1) entered forwarding state [ 145.748168][ T5078] 8021q: adding VLAN 0 to HW filter on device batadv0 [ 145.759407][ T5078] veth0_vlan: entered promiscuous mode [ 145.761199][ T5078] veth1_vlan: entered promiscuous mode [ 145.768206][ T5078] veth0_macvtap: entered promiscuous mode [ 145.769425][ T5078] veth1_macvtap: entered promiscuous mode [ 145.779942][ T5078] batman_adv: batadv0: Interface activated: batadv_slave_0 [ 145.781022][ T5078] batman_adv: batadv0: Interface activated: batadv_slave_1 [ 145.782838][ T40] netdevsim netdevsim0 netdevsim0: set [1, 0] type 2 family 0 port 6081 - 0 [ 145.783024][ T40] netdevsim netdevsim0 netdevsim1: set [1, 0] type 2 family 0 port 6081 - 0 [ 145.783075][ T40] netdevsim netdevsim0 netdevsim2: set [1, 0] type 2 family 0 port 6081 - 0 [ 145.783754][ T40] netdevsim netdevsim0 netdevsim3: set [1, 0] type 2 family 0 port 6081 - 0 [ 147.132259][ T4726] Bluetooth: hci2: command tx timeout [ 149.212214][ T4726] Bluetooth: hci2: command tx timeout [ 151.292200][ T4726] Bluetooth: hci2: command tx timeout [ 152.812423][ T4385] block nbd0: Possible stuck request 0000000009e057fe: control (read@0,4096B). Runtime 120 seconds [ 153.372194][ T50] Bluetooth: hci2: command tx timeout [ 153.612206][ T50] Bluetooth: hci0: command 0x0406 tx timeout [ 182.892593][ T4385] block nbd0: Possible stuck request 0000000009e057fe: control (read@0,4096B). Runtime 150 seconds [ 186.732290][ T31] I ** replaying previous printk message ** [ 186.732290][ T31] INFO: task syz-executor.0:4978 blocked for more than 143 seconds. [ 186.732320][ T31] Not tainted syzkaller #0 [ 186.732339][ T31] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. [ 186.732348][ T31] task:syz-executor.0 state:D stack:0 pid:4978 tgid:4978 ppid:4872 task_flags:0x400040 flags:0x00000001 [ 186.732371][ T31] Call trace: [ 186.732378][ T31] __switch_to+0x2b0/0x6e0 (T) [ 186.732397][ T31] __schedule+0x1c04/0x2db8 [ 186.732408][ T31] schedule+0x13c/0x20c [ 186.732418][ T31] schedule_preempt_disabled+0x18/0x2c [ 186.732429][ T31] __mutex_lock+0x4fc/0xed0 [ 186.732440][ T31] mutex_lock_nested+0x24/0x30 [ 186.732450][ T31] bdev_release+0x128/0x328 [ 186.732462][ T31] blkdev_release+0x20/0x34 [ 186.732470][ T31] __fput+0x338/0x74c [ 186.732478][ T31] fput_close_sync+0x10c/0x278 [ 186.732486][ T31] __arm64_sys_close+0x7c/0x10c [ 186.732499][ T31] invoke_syscall+0x98/0x244 [ 186.732511][ T31] el0_svc_common+0xec/0x23c [ 186.732521][ T31] do_el0_svc+0x4c/0x5c [ 186.732531][ T31] el0_svc+0x64/0x260 [ 186.732538][ T31] el0t_64_sync_handler+0x48/0x148 [ 186.732546][ T31] el0t_64_sync+0x198/0x19c [ 186.732565][ T31] [ 186.732565][ T31] Showing all locks held in the system: [ 186.732571][ T31] 1 lock held by khungtaskd/31: [ 186.732576][ T31] #0: ffff800088bf70c0 (rcu_read_lock){....}-{1:3}, at: debug_show_all_locks+0x4c/0x188 [ 186.732603][ T31] 2 locks held by pr/ttyAMA-1/41: [ 186.732617][ T31] 2 locks held by getty/4491: [ 186.732621][ T31] #0: ffff0000d45cb0a0 (&tty->ldisc_sem){++++}-{0:0}, at: ldsem_down_read+0x3c/0x4c [ 186.732645][ T31] #1: ffff8000923ab2e8 (&ldata->atomic_read_lock){+.+.}-{4:4}, at: n_tty_read+0x348/0xf70 [ 186.732672][ T31] 2 locks held by kworker/0:4/4761: [ 186.732677][ T31] 1 lock held by udevd/4793: [ 186.732681][ T31] #0: ffff0000c8762350 (&disk->open_mutex){+.+.}-{4:4}, at: bdev_open+0xc4/0x880 [ 186.732706][ T31] 1 lock held by syz-executor.0/4978: [ 186.732710][ T31] #0: ffff0000c8762350 (&disk->open_mutex){+.+.}-{4:4}, at: bdev_release+0x128/0x328 [ 186.732733][ T31] 1 lock held by syz-executor.0/5069: [ 186.732738][ T31] #0: ffff0000c8762350 (&disk->open_mutex){+.+.}-{4:4}, at: bdev_open+0xc4/0x880 [ 186.732760][ T31] 1 lock held by syz-executor.0/5070: [ 186.732764][ T31] #0: ffff0000c8762350 (&disk->open_mutex){+.+.}-{4:4}, at: bdev_open+0xc4/0x880 [ 186.732787][ T31] 1 lock held by syz-executor.0/5111: [ 186.732791][ T31] #0: ffff0000c8762350 (&disk->open_mutex){+.+.}-{4:4}, at: bdev_open+0xc4/0x880 [ 186.732813][ T31] 1 lock held by syz-executor.0/5112: [ 186.732817][ T31] #0: ffff0000c8762350 (&disk->open_mutex){+.+.}-{4:4}, at: bdev_open+0xc4/0x880 [ 186.732839][ T31] [ 186.732842][ T31] ============================================= [ 186.732842][ T31] [ 186.732847][ T31] Kernel panic - not syncing: hung_task: blocked tasks [ 186.778577][ T31] CPU: 1 UID: 0 PID: 31 Comm: khungtaskd Not tainted syzkaller #0 PREEMPT [ 186.780021][ T31] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/02/2026 [ 186.781785][ T31] Call trace: [ 186.782366][ T31] show_stack+0x2c/0x3c (C) [ 186.783098][ T31] __dump_stack+0x30/0x40 [ 186.783798][ T31] dump_stack_lvl+0x30/0x12c [ 186.784532][ T31] dump_stack+0x1c/0x28 [ 186.785178][ T31] vpanic+0x594/0xaf8 [ 186.785858][ T31] vpanic+0x0/0xaf8 [ 186.786496][ T31] hung_task_panic+0x0/0x2c [ 186.787253][ T31] kthread+0x304/0x3d4 [ 186.787952][ T31] ret_from_fork+0x10/0x20 [ 186.788754][ T31] SMP: stopping secondary CPUs [ 186.789577][ T31] Kernel Offset: disabled [ 186.790258][ T31] CPU features: 0x0a000000,003c0008,27020501,5427fea7 [ 186.791470][ T31] Memory Limit: none [ 187.057397][ T31] Rebooting in 86400 seconds..