[ 33.690252][ T1196] netdevsim netdevsim0 netdevsim3 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 35.418986][ T1196] netdevsim netdevsim0 netdevsim2 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 35.458757][ T1196] netdevsim netdevsim0 netdevsim1 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 35.539426][ T1196] netdevsim netdevsim0 netdevsim0 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 35.856129][ T1196] bridge_slave_1: left allmulticast mode [ 35.856169][ T1196] bridge_slave_1: left promiscuous mode [ 35.856736][ T1196] bridge0: port 2(bridge_slave_1) entered disabled state [ 35.868456][ T1196] bridge_slave_0: left allmulticast mode [ 35.868483][ T1196] bridge_slave_0: left promiscuous mode [ 35.868560][ T1196] bridge0: port 1(bridge_slave_0) entered disabled state [ 35.997388][ T1196] bond0 (unregistering): (slave bond_slave_0): Releasing backup interface [ 36.027651][ T1196] bond0 (unregistering): (slave bond_slave_1): Releasing backup interface [ 36.036814][ T1196] bond0 (unregistering): Released all slaves [ 36.040891][ T4396] 8021q: adding VLAN 0 to HW filter on device eth0 [ 36.100726][ T1196] hsr_slave_0: left promiscuous mode [ 36.102143][ T1196] hsr_slave_1: left promiscuous mode [ 36.102437][ T1196] batman_adv: batadv0: Interface deactivated: batadv_slave_0 [ 36.102462][ T1196] batman_adv: batadv0: Removing interface: batadv_slave_0 [ 36.107226][ T1196] batman_adv: batadv0: Interface deactivated: batadv_slave_1 [ 36.109359][ T1196] batman_adv: batadv0: Removing interface: batadv_slave_1 [ 36.114243][ T1196] veth1_macvtap: left promiscuous mode [ 36.115373][ T1196] veth0_macvtap: left promiscuous mode [ 36.117847][ T1196] veth1_vlan: left promiscuous mode [ 36.118846][ T1196] veth0_vlan: left promiscuous mode [ 36.204673][ T1196] team0 (unregistering): Port device team_slave_1 removed [ 36.208180][ T1196] team0 (unregistering): Port device team_slave_0 removed [ 36.254899][ T4396] 8021q: adding VLAN 0 to HW filter on device eth1 [ 36.368036][ T4396] 8021q: adding VLAN 0 to HW filter on device eth2 [ 36.489126][ T4396] 8021q: adding VLAN 0 to HW filter on device eth3 Warning: Permanently added '10.128.1.132' (ED25519) to the list of known hosts. 1970/01/01 00:00:38 ignoring optional flag "type"="gce" 1970/01/01 00:00:38 parsed 1 programs [ 39.016791][ T4869] Adding 124996k swap on ./swap-file. Priority:0 extents:1 across:124996k SS 1970/01/01 00:00:39 executed programs: 0 [ 39.032850][ T50] Bluetooth: hci0: unexpected cc 0x0c03 length: 249 > 1 [ 39.033262][ T50] Bluetooth: hci0: unexpected cc 0x1003 length: 249 > 9 [ 39.033435][ T50] Bluetooth: hci0: unexpected cc 0x1001 length: 249 > 9 [ 39.033730][ T50] Bluetooth: hci0: unexpected cc 0x0c23 length: 249 > 4 [ 39.033976][ T50] Bluetooth: hci0: unexpected cc 0x0c38 length: 249 > 2 [ 39.164999][ T4876] bridge0: port 1(bridge_slave_0) entered blocking state [ 39.165051][ T4876] bridge0: port 1(bridge_slave_0) entered disabled state [ 39.165101][ T4876] bridge_slave_0: entered allmulticast mode [ 39.165498][ T4876] bridge_slave_0: entered promiscuous mode [ 39.166353][ T4876] bridge0: port 2(bridge_slave_1) entered blocking state [ 39.166396][ T4876] bridge0: port 2(bridge_slave_1) entered disabled state [ 39.166472][ T4876] bridge_slave_1: entered allmulticast mode [ 39.166845][ T4876] bridge_slave_1: entered promiscuous mode [ 39.178309][ T4876] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 39.179166][ T4876] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 39.185920][ T4876] team0: Port device team_slave_0 added [ 39.186628][ T4876] team0: Port device team_slave_1 added [ 39.193615][ T4876] batman_adv: batadv0: Adding interface: batadv_slave_0 [ 39.193635][ T4876] 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. [ 39.193650][ T4876] batman_adv: batadv0: Not using interface batadv_slave_0 (retrying later): interface not active [ 39.194135][ T4876] batman_adv: batadv0: Adding interface: batadv_slave_1 [ 39.194142][ T4876] 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. [ 39.194154][ T4876] batman_adv: batadv0: Not using interface batadv_slave_1 (retrying later): interface not active [ 39.210810][ T4876] hsr_slave_0: entered promiscuous mode [ 39.211083][ T4876] hsr_slave_1: entered promiscuous mode [ 39.605412][ T4876] netdevsim netdevsim0 netdevsim0: renamed from eth0 [ 39.608984][ T4876] 8021q: adding VLAN 0 to HW filter on device netdevsim0 [ 39.611486][ T4876] netdevsim netdevsim0 netdevsim1: renamed from eth1 [ 39.613844][ T4876] 8021q: adding VLAN 0 to HW filter on device netdevsim1 [ 39.615560][ T4876] netdevsim netdevsim0 netdevsim2: renamed from eth2 [ 39.623363][ T4876] 8021q: adding VLAN 0 to HW filter on device netdevsim2 [ 39.624890][ T4876] netdevsim netdevsim0 netdevsim3: renamed from eth3 [ 39.630586][ T4876] 8021q: adding VLAN 0 to HW filter on device netdevsim3 [ 39.639964][ T4876] bridge0: port 2(bridge_slave_1) entered blocking state [ 39.640006][ T4876] bridge0: port 2(bridge_slave_1) entered forwarding state [ 39.640086][ T4876] bridge0: port 1(bridge_slave_0) entered blocking state [ 39.640114][ T4876] bridge0: port 1(bridge_slave_0) entered forwarding state [ 39.658034][ T4876] 8021q: adding VLAN 0 to HW filter on device bond0 [ 39.660976][ T149] bridge0: port 1(bridge_slave_0) entered disabled state [ 39.662386][ T149] bridge0: port 2(bridge_slave_1) entered disabled state [ 39.667074][ T4876] 8021q: adding VLAN 0 to HW filter on device team0 [ 39.668924][ T39] bridge0: port 1(bridge_slave_0) entered blocking state [ 39.668965][ T39] bridge0: port 1(bridge_slave_0) entered forwarding state [ 39.671152][ T149] bridge0: port 2(bridge_slave_1) entered blocking state [ 39.671176][ T149] bridge0: port 2(bridge_slave_1) entered forwarding state [ 39.775623][ T4876] 8021q: adding VLAN 0 to HW filter on device batadv0 [ 39.791411][ T4876] veth0_vlan: entered promiscuous mode [ 39.793566][ T4876] veth1_vlan: entered promiscuous mode [ 39.809321][ T4876] veth0_macvtap: entered promiscuous mode [ 39.810574][ T4876] veth1_macvtap: entered promiscuous mode [ 39.816986][ T4876] batman_adv: batadv0: Interface activated: batadv_slave_0 [ 39.820727][ T4876] batman_adv: batadv0: Interface activated: batadv_slave_1 [ 39.823280][ T1196] netdevsim netdevsim0 netdevsim0: set [1, 0] type 2 family 0 port 6081 - 0 [ 39.823406][ T1196] netdevsim netdevsim0 netdevsim1: set [1, 0] type 2 family 0 port 6081 - 0 [ 39.823429][ T1196] netdevsim netdevsim0 netdevsim2: set [1, 0] type 2 family 0 port 6081 - 0 [ 39.823446][ T1196] netdevsim netdevsim0 netdevsim3: set [1, 0] type 2 family 0 port 6081 - 0 [ 39.986719][ T4995] nbd0: detected capacity change from 0 to 65538 [ 40.693867][ T4729] block nbd0: Receive control failed (result -104) [ 41.036391][ T4729] Bluetooth: hci0: command tx timeout [ 43.115900][ T4729] Bluetooth: hci0: command tx timeout [ 45.196078][ T4729] Bluetooth: hci0: command tx timeout [ 47.275886][ T4729] Bluetooth: hci0: command tx timeout [ 64.477367][ T1598] ieee802154 phy0 wpan0: encryption failed: -22 [ 64.477445][ T1598] ieee802154 phy1 wpan1: encryption failed: -22 [ 64.479092][ T26] cfg80211: failed to load regulatory.db [ 70.237636][ T4399] block nbd0: Possible stuck request 00000000e9d1d306: control (read@0,4096B). Runtime 30 seconds 1970/01/01 00:01:34 executed programs: 1 [ 95.875345][ T50] Bluetooth: hci1: unexpected cc 0x0c03 length: 249 > 1 [ 95.876607][ T50] Bluetooth: hci1: unexpected cc 0x1003 length: 249 > 9 [ 95.876837][ T50] Bluetooth: hci1: unexpected cc 0x1001 length: 249 > 9 [ 95.877142][ T50] Bluetooth: hci1: unexpected cc 0x0c23 length: 249 > 4 [ 95.877341][ T50] Bluetooth: hci1: unexpected cc 0x0c38 length: 249 > 2 [ 96.006302][ T5035] bridge0: port 1(bridge_slave_0) entered blocking state [ 96.006375][ T5035] bridge0: port 1(bridge_slave_0) entered disabled state [ 96.006464][ T5035] bridge_slave_0: entered allmulticast mode [ 96.006893][ T5035] bridge_slave_0: entered promiscuous mode [ 96.008081][ T5035] bridge0: port 2(bridge_slave_1) entered blocking state [ 96.008128][ T5035] bridge0: port 2(bridge_slave_1) entered disabled state [ 96.008172][ T5035] bridge_slave_1: entered allmulticast mode [ 96.008562][ T5035] bridge_slave_1: entered promiscuous mode [ 96.019428][ T5035] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 96.020287][ T5035] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 96.027338][ T5035] team0: Port device team_slave_0 added [ 96.028063][ T5035] team0: Port device team_slave_1 added [ 96.035145][ T5035] batman_adv: batadv0: Adding interface: batadv_slave_0 [ 96.035297][ T5035] 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. [ 96.035315][ T5035] batman_adv: batadv0: Not using interface batadv_slave_0 (retrying later): interface not active [ 96.036055][ T5035] batman_adv: batadv0: Adding interface: batadv_slave_1 [ 96.036067][ T5035] 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. [ 96.036081][ T5035] batman_adv: batadv0: Not using interface batadv_slave_1 (retrying later): interface not active [ 96.057986][ T5035] hsr_slave_0: entered promiscuous mode [ 96.058276][ T5035] hsr_slave_1: entered promiscuous mode [ 96.058463][ T5035] debugfs: 'hsr0' already exists in 'hsr' [ 96.058507][ T5035] Cannot create hsr debugfs directory [ 96.160938][ T5035] netdevsim netdevsim0 netdevsim3 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 96.219435][ T5035] netdevsim netdevsim0 netdevsim2 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 96.299023][ T5035] netdevsim netdevsim0 netdevsim1 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 96.400239][ T5035] netdevsim netdevsim0 netdevsim0 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 96.509868][ T5035] netdevsim netdevsim0 netdevsim0: renamed from eth0 [ 96.512224][ T5035] 8021q: adding VLAN 0 to HW filter on device netdevsim0 [ 96.512527][ T5035] netdevsim netdevsim0 netdevsim1: renamed from eth1 [ 96.514465][ T5035] 8021q: adding VLAN 0 to HW filter on device netdevsim1 [ 96.514735][ T5035] netdevsim netdevsim0 netdevsim2: renamed from eth2 [ 96.516924][ T5035] 8021q: adding VLAN 0 to HW filter on device netdevsim2 [ 96.518904][ T5035] netdevsim netdevsim0 netdevsim3: renamed from eth3 [ 96.520915][ T5035] 8021q: adding VLAN 0 to HW filter on device netdevsim3 [ 96.527912][ T5035] bridge0: port 2(bridge_slave_1) entered blocking state [ 96.527948][ T5035] bridge0: port 2(bridge_slave_1) entered forwarding state [ 96.528031][ T5035] bridge0: port 1(bridge_slave_0) entered blocking state [ 96.528059][ T5035] bridge0: port 1(bridge_slave_0) entered forwarding state [ 96.542718][ T5035] 8021q: adding VLAN 0 to HW filter on device bond0 [ 96.545437][ T39] bridge0: port 1(bridge_slave_0) entered disabled state [ 96.546974][ T39] bridge0: port 2(bridge_slave_1) entered disabled state [ 96.550527][ T5035] 8021q: adding VLAN 0 to HW filter on device team0 [ 96.552974][ T40] bridge0: port 1(bridge_slave_0) entered blocking state [ 96.553179][ T40] bridge0: port 1(bridge_slave_0) entered forwarding state [ 96.555737][ T149] bridge0: port 2(bridge_slave_1) entered blocking state [ 96.555779][ T149] bridge0: port 2(bridge_slave_1) entered forwarding state [ 96.648942][ T5035] 8021q: adding VLAN 0 to HW filter on device batadv0 [ 96.659755][ T5035] veth0_vlan: entered promiscuous mode [ 96.661423][ T5035] veth1_vlan: entered promiscuous mode [ 96.668563][ T5035] veth0_macvtap: entered promiscuous mode [ 96.669957][ T5035] veth1_macvtap: entered promiscuous mode [ 96.673738][ T5035] batman_adv: batadv0: Interface activated: batadv_slave_0 [ 96.674874][ T5035] batman_adv: batadv0: Interface activated: batadv_slave_1 [ 96.682888][ T40] netdevsim netdevsim0 netdevsim0: set [1, 0] type 2 family 0 port 6081 - 0 [ 96.682931][ T40] netdevsim netdevsim0 netdevsim1: set [1, 0] type 2 family 0 port 6081 - 0 [ 96.682963][ T40] netdevsim netdevsim0 netdevsim2: set [1, 0] type 2 family 0 port 6081 - 0 [ 96.682982][ T40] netdevsim netdevsim0 netdevsim3: set [1, 0] type 2 family 0 port 6081 - 0 [ 97.916247][ T50] Bluetooth: hci1: command tx timeout [ 99.995888][ T50] Bluetooth: hci1: command tx timeout [ 100.316830][ T4399] block nbd0: Possible stuck request 00000000e9d1d306: control (read@0,4096B). Runtime 60 seconds [ 102.076139][ T50] Bluetooth: hci1: command tx timeout [ 102.732898][ T4340] udevd[4340]: worker [4788] /devices/virtual/block/nbd0 is taking a long time [ 104.156087][ T50] Bluetooth: hci1: command tx timeout [ 125.916619][ T1598] ieee802154 phy0 wpan0: encryption failed: -22 [ 125.916665][ T1598] ieee802154 phy1 wpan1: encryption failed: -22 [ 130.396320][ T4399] block nbd0: Possible stuck request 00000000e9d1d306: control (read@0,4096B). Runtime 90 seconds 1970/01/01 00:02:31 executed programs: 2 [ 152.741268][ T4729] Bluetooth: hci2: unexpected cc 0x0c03 length: 249 > 1 [ 152.742665][ T4729] Bluetooth: hci2: unexpected cc 0x1003 length: 249 > 9 [ 152.743280][ T4729] Bluetooth: hci2: unexpected cc 0x1001 length: 249 > 9 [ 152.743622][ T4729] Bluetooth: hci2: unexpected cc 0x0c23 length: 249 > 4 [ 152.743816][ T4729] Bluetooth: hci2: unexpected cc 0x0c38 length: 249 > 2 [ 152.876333][ T5076] bridge0: port 1(bridge_slave_0) entered blocking state [ 152.876412][ T5076] bridge0: port 1(bridge_slave_0) entered disabled state [ 152.876463][ T5076] bridge_slave_0: entered allmulticast mode [ 152.876920][ T5076] bridge_slave_0: entered promiscuous mode [ 152.877667][ T5076] bridge0: port 2(bridge_slave_1) entered blocking state [ 152.877715][ T5076] bridge0: port 2(bridge_slave_1) entered disabled state [ 152.877794][ T5076] bridge_slave_1: entered allmulticast mode [ 152.878221][ T5076] bridge_slave_1: entered promiscuous mode [ 152.889350][ T5076] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 152.890229][ T5076] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 152.897720][ T5076] team0: Port device team_slave_0 added [ 152.898455][ T5076] team0: Port device team_slave_1 added [ 152.905006][ T5076] batman_adv: batadv0: Adding interface: batadv_slave_0 [ 152.905183][ T5076] 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. [ 152.905200][ T5076] batman_adv: batadv0: Not using interface batadv_slave_0 (retrying later): interface not active [ 152.906938][ T5076] batman_adv: batadv0: Adding interface: batadv_slave_1 [ 152.906946][ T5076] 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. [ 152.906958][ T5076] batman_adv: batadv0: Not using interface batadv_slave_1 (retrying later): interface not active [ 152.922629][ T5076] hsr_slave_0: entered promiscuous mode [ 152.922947][ T5076] hsr_slave_1: entered promiscuous mode [ 152.923137][ T5076] debugfs: 'hsr0' already exists in 'hsr' [ 152.923147][ T5076] Cannot create hsr debugfs directory [ 152.971837][ T5076] netdevsim netdevsim0 netdevsim3 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 153.049298][ T5076] netdevsim netdevsim0 netdevsim2 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 153.129394][ T5076] netdevsim netdevsim0 netdevsim1 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 153.190475][ T5076] netdevsim netdevsim0 netdevsim0 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 153.308867][ T5076] netdevsim netdevsim0 netdevsim0: renamed from eth0 [ 153.311172][ T5076] 8021q: adding VLAN 0 to HW filter on device netdevsim0 [ 153.312746][ T5076] netdevsim netdevsim0 netdevsim1: renamed from eth1 [ 153.315018][ T5076] 8021q: adding VLAN 0 to HW filter on device netdevsim1 [ 153.316962][ T5076] netdevsim netdevsim0 netdevsim2: renamed from eth2 [ 153.318923][ T5076] 8021q: adding VLAN 0 to HW filter on device netdevsim2 [ 153.320460][ T5076] netdevsim netdevsim0 netdevsim3: renamed from eth3 [ 153.322479][ T5076] 8021q: adding VLAN 0 to HW filter on device netdevsim3 [ 153.330823][ T5076] bridge0: port 2(bridge_slave_1) entered blocking state [ 153.330866][ T5076] bridge0: port 2(bridge_slave_1) entered forwarding state [ 153.330945][ T5076] bridge0: port 1(bridge_slave_0) entered blocking state [ 153.330975][ T5076] bridge0: port 1(bridge_slave_0) entered forwarding state [ 153.344274][ T5076] 8021q: adding VLAN 0 to HW filter on device bond0 [ 153.347836][ T39] bridge0: port 1(bridge_slave_0) entered disabled state [ 153.349147][ T39] bridge0: port 2(bridge_slave_1) entered disabled state [ 153.353416][ T5076] 8021q: adding VLAN 0 to HW filter on device team0 [ 153.355387][ T149] bridge0: port 1(bridge_slave_0) entered blocking state [ 153.355430][ T149] bridge0: port 1(bridge_slave_0) entered forwarding state [ 153.364861][ T5076] hsr0: Slave A (hsr_slave_0) is not up; please bring it up to get a fully working HSR network [ 153.364888][ T5076] hsr0: Slave B (hsr_slave_1) is not up; please bring it up to get a fully working HSR network [ 153.367420][ T149] bridge0: port 2(bridge_slave_1) entered blocking state [ 153.367442][ T149] bridge0: port 2(bridge_slave_1) entered forwarding state [ 153.447396][ T5076] 8021q: adding VLAN 0 to HW filter on device batadv0 [ 153.464407][ T5076] veth0_vlan: entered promiscuous mode [ 153.470683][ T5076] veth1_vlan: entered promiscuous mode [ 153.477328][ T5076] veth0_macvtap: entered promiscuous mode [ 153.478836][ T5076] veth1_macvtap: entered promiscuous mode [ 153.482614][ T5076] batman_adv: batadv0: Interface activated: batadv_slave_0 [ 153.483684][ T5076] batman_adv: batadv0: Interface activated: batadv_slave_1 [ 153.485150][ T149] netdevsim netdevsim0 netdevsim0: set [1, 0] type 2 family 0 port 6081 - 0 [ 153.485188][ T1196] netdevsim netdevsim0 netdevsim1: set [1, 0] type 2 family 0 port 6081 - 0 [ 153.485221][ T1196] netdevsim netdevsim0 netdevsim2: set [1, 0] type 2 family 0 port 6081 - 0 [ 153.485244][ T1196] netdevsim netdevsim0 netdevsim3: set [1, 0] type 2 family 0 port 6081 - 0 [ 154.795963][ T4729] Bluetooth: hci2: command tx timeout [ 156.875898][ T4729] Bluetooth: hci2: command tx timeout [ 158.956090][ T4729] Bluetooth: hci2: command tx timeout [ 160.476000][ T4399] block nbd0: Possible stuck request 00000000e9d1d306: control (read@0,4096B). Runtime 120 seconds [ 161.035887][ T4729] Bluetooth: hci2: command tx timeout [ 163.835889][ T50] Bluetooth: hci0: command 0x0406 tx timeout [ 187.356529][ T1598] ieee802154 phy0 wpan0: encryption failed: -22 [ 187.356576][ T1598] ieee802154 phy1 wpan1: encryption failed: -22 [ 190.555992][ T4399] block nbd0: Possible stuck request 00000000e9d1d306: control (read@0,4096B). Runtime 150 seconds [ 194.395971][ T31] INF ** replaying previous printk message ** [ 194.395971][ T31] INFO: task syz-executor.0:4982 blocked for more than 143 seconds. [ 194.396000][ T31] Not tainted syzkaller #0 [ 194.396024][ T31] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. [ 194.396030][ T31] task:syz-executor.0 state:D stack:0 pid:4982 tgid:4980 ppid:4876 task_flags:0x400140 flags:0x00000019 [ 194.396045][ T31] Call trace: [ 194.396049][ T31] __switch_to+0x2b0/0x6e0 (T) [ 194.396067][ T31] __schedule+0x1c04/0x2db8 [ 194.396078][ T31] schedule+0x13c/0x20c [ 194.396088][ T31] schedule_preempt_disabled+0x18/0x2c [ 194.396098][ T31] __mutex_lock+0x4fc/0xed0 [ 194.396109][ T31] mutex_lock_nested+0x24/0x30 [ 194.396120][ T31] bdev_release+0x128/0x328 [ 194.396132][ T31] blkdev_release+0x20/0x34 [ 194.396140][ T31] __fput+0x338/0x74c [ 194.396149][ T31] ____fput+0x20/0x30 [ 194.396156][ T31] task_work_run+0x1cc/0x25c [ 194.396167][ T31] get_signal+0xf30/0x1094 [ 194.396175][ T31] arch_do_signal_or_restart+0x288/0x444c [ 194.396187][ T31] exit_to_user_mode_loop+0x70/0x17c [ 194.396195][ T31] el0_svc+0x18c/0x260 [ 194.396203][ T31] el0t_64_sync_handler+0x48/0x148 [ 194.396211][ T31] el0t_64_sync+0x198/0x19c [ 194.396228][ T31] [ 194.396228][ T31] Showing all locks held in the system: [ 194.396234][ T31] 1 lock held by khungtaskd/31: [ 194.396239][ T31] #0: ffff800088bf70c0 (rcu_read_lock){....}-{1:3}, at: debug_show_all_locks+0x4c/0x188 [ 194.396269][ T31] 2 locks held by pr/ttyAMA-1/41: [ 194.396282][ T31] 2 locks held by getty/4488: [ 194.396287][ T31] #0: ffff0000c98c00a0 (&tty->ldisc_sem){++++}-{0:0}, at: ldsem_down_read+0x3c/0x4c [ 194.396308][ T31] #1: ffff80009238e2e8 (&ldata->atomic_read_lock){+.+.}-{4:4}, at: n_tty_read+0x348/0xf70 [ 194.396333][ T31] 1 lock held by udevd/4788: [ 194.396337][ T31] #0: ffff0000c81fa350 (&disk->open_mutex){+.+.}-{4:4}, at: bdev_open+0xc4/0x880 [ 194.396361][ T31] 1 lock held by syz-executor.0/4982: [ 194.396365][ T31] #0: ffff0000c81fa350 (&disk->open_mutex){+.+.}-{4:4}, at: bdev_release+0x128/0x328 [ 194.396388][ T31] 1 lock held by syz-executor.0/5068: [ 194.396392][ T31] #0: ffff0000c81fa350 (&disk->open_mutex){+.+.}-{4:4}, at: bdev_open+0xc4/0x880 [ 194.396415][ T31] 1 lock held by syz-executor.0/5109: [ 194.396420][ T31] #0: ffff0000c81fa350 (&disk->open_mutex){+.+.}-{4:4}, at: bdev_open+0xc4/0x880 [ 194.396442][ T31] [ 194.396444][ T31] ============================================= [ 194.396444][ T31] [ 194.396449][ T31] Kernel panic - not syncing: hung_task: blocked tasks [ 194.434749][ T31] CPU: 1 UID: 0 PID: 31 Comm: khungtaskd Not tainted syzkaller #0 PREEMPT [ 194.436116][ T31] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/02/2026 [ 194.437791][ T31] Call trace: [ 194.438313][ T31] show_stack+0x2c/0x3c (C) [ 194.438982][ T31] __dump_stack+0x30/0x40 [ 194.439648][ T31] dump_stack_lvl+0x30/0x12c [ 194.440363][ T31] dump_stack+0x1c/0x28 [ 194.440954][ T31] vpanic+0x594/0xaf8 [ 194.441613][ T31] vpanic+0x0/0xaf8 [ 194.442214][ T31] hung_task_panic+0x0/0x2c [ 194.442962][ T31] kthread+0x304/0x3d4 [ 194.443607][ T31] ret_from_fork+0x10/0x20 [ 194.444339][ T31] SMP: stopping secondary CPUs [ 194.445066][ T31] Kernel Offset: disabled [ 194.445731][ T31] CPU features: 0x0a000000,003c0008,27020501,5427fea7 [ 194.446794][ T31] Memory Limit: none [ 194.707077][ T31] Rebooting in 86400 seconds..