[ 35.096135][ T12] netdevsim netdevsim0 netdevsim2 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 35.155933][ T12] netdevsim netdevsim0 netdevsim1 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 35.226430][ T12] netdevsim netdevsim0 netdevsim0 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 35.372033][ T12] bridge_slave_1: left allmulticast mode [ 35.372076][ T12] bridge_slave_1: left promiscuous mode [ 35.372499][ T12] bridge0: port 2(bridge_slave_1) entered disabled state [ 35.381182][ T12] bridge_slave_0: left allmulticast mode [ 35.381221][ T12] bridge_slave_0: left promiscuous mode [ 35.381297][ T12] bridge0: port 1(bridge_slave_0) entered disabled state [ 35.434901][ T12] bond0 (unregistering): (slave bond_slave_0): Releasing backup interface [ 35.464624][ T12] bond0 (unregistering): (slave bond_slave_1): Releasing backup interface [ 35.513697][ T12] bond0 (unregistering): Released all slaves [ 35.578640][ T12] hsr_slave_0: left promiscuous mode [ 35.580053][ T12] hsr_slave_1: left promiscuous mode [ 35.581320][ T12] batman_adv: batadv0: Interface deactivated: batadv_slave_0 [ 35.583123][ T12] batman_adv: batadv0: Removing interface: batadv_slave_0 [ 35.585069][ T12] batman_adv: batadv0: Interface deactivated: batadv_slave_1 [ 35.586567][ T12] batman_adv: batadv0: Removing interface: batadv_slave_1 [ 35.591249][ T12] veth1_macvtap: left promiscuous mode [ 35.592373][ T12] veth0_macvtap: left promiscuous mode [ 35.593986][ T12] veth1_vlan: left promiscuous mode [ 35.595105][ T12] veth0_vlan: left promiscuous mode [ 35.679680][ T12] team0 (unregistering): Port device team_slave_1 removed [ 35.685709][ T12] team0 (unregistering): Port device team_slave_0 removed [ 35.724996][ T4401] 8021q: adding VLAN 0 to HW filter on device eth0 [ 35.845972][ T4401] 8021q: adding VLAN 0 to HW filter on device eth1 [ 35.973033][ T4401] 8021q: adding VLAN 0 to HW filter on device eth2 [ 36.084939][ T4401] 8021q: adding VLAN 0 to HW filter on device eth3 Warning: Permanently added '10.128.1.87' (ED25519) to the list of known hosts. 1970/01/01 00:00:39 ignoring optional flag "type"="gce" 1970/01/01 00:00:39 parsed 1 programs [ 39.610994][ T4873] Adding 124996k swap on ./swap-file. Priority:0 extents:1 across:124996k SS 1970/01/01 00:00:39 executed programs: 0 [ 39.628513][ T50] Bluetooth: hci0: unexpected cc 0x0c03 length: 249 > 1 [ 39.631450][ T50] Bluetooth: hci0: unexpected cc 0x1003 length: 249 > 9 [ 39.633584][ T50] Bluetooth: hci0: unexpected cc 0x1001 length: 249 > 9 [ 39.633934][ T50] Bluetooth: hci0: unexpected cc 0x0c23 length: 249 > 4 [ 39.634143][ T50] Bluetooth: hci0: unexpected cc 0x0c38 length: 249 > 2 [ 39.766909][ T4879] bridge0: port 1(bridge_slave_0) entered blocking state [ 39.766993][ T4879] bridge0: port 1(bridge_slave_0) entered disabled state [ 39.767045][ T4879] bridge_slave_0: entered allmulticast mode [ 39.767461][ T4879] bridge_slave_0: entered promiscuous mode [ 39.768664][ T4879] bridge0: port 2(bridge_slave_1) entered blocking state [ 39.768717][ T4879] bridge0: port 2(bridge_slave_1) entered disabled state [ 39.768759][ T4879] bridge_slave_1: entered allmulticast mode [ 39.769153][ T4879] bridge_slave_1: entered promiscuous mode [ 39.781413][ T4879] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 39.782304][ T4879] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 39.789678][ T4879] team0: Port device team_slave_0 added [ 39.790362][ T4879] team0: Port device team_slave_1 added [ 39.798184][ T4879] batman_adv: batadv0: Adding interface: batadv_slave_0 [ 39.798206][ T4879] 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. [ 39.798222][ T4879] batman_adv: batadv0: Not using interface batadv_slave_0 (retrying later): interface not active [ 39.798702][ T4879] batman_adv: batadv0: Adding interface: batadv_slave_1 [ 39.798709][ T4879] 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. [ 39.798725][ T4879] batman_adv: batadv0: Not using interface batadv_slave_1 (retrying later): interface not active [ 39.815740][ T4879] hsr_slave_0: entered promiscuous mode [ 39.816034][ T4879] hsr_slave_1: entered promiscuous mode [ 40.178109][ T4879] netdevsim netdevsim0 netdevsim0: renamed from eth0 [ 40.180454][ T4879] 8021q: adding VLAN 0 to HW filter on device netdevsim0 [ 40.180789][ T4879] netdevsim netdevsim0 netdevsim1: renamed from eth1 [ 40.182920][ T4879] 8021q: adding VLAN 0 to HW filter on device netdevsim1 [ 40.183219][ T4879] netdevsim netdevsim0 netdevsim2: renamed from eth2 [ 40.184140][ T4879] 8021q: adding VLAN 0 to HW filter on device netdevsim2 [ 40.184777][ T4879] netdevsim netdevsim0 netdevsim3: renamed from eth3 [ 40.186926][ T4879] 8021q: adding VLAN 0 to HW filter on device netdevsim3 [ 40.198882][ T4879] bridge0: port 2(bridge_slave_1) entered blocking state [ 40.198929][ T4879] bridge0: port 2(bridge_slave_1) entered forwarding state [ 40.199019][ T4879] bridge0: port 1(bridge_slave_0) entered blocking state [ 40.199071][ T4879] bridge0: port 1(bridge_slave_0) entered forwarding state [ 40.219447][ T4879] 8021q: adding VLAN 0 to HW filter on device bond0 [ 40.225048][ T4879] 8021q: adding VLAN 0 to HW filter on device team0 [ 40.337048][ T4879] 8021q: adding VLAN 0 to HW filter on device batadv0 [ 40.356969][ T4879] veth0_vlan: entered promiscuous mode [ 40.359989][ T4879] veth1_vlan: entered promiscuous mode [ 40.374079][ T4879] veth0_macvtap: entered promiscuous mode [ 40.375340][ T4879] veth1_macvtap: entered promiscuous mode [ 40.380890][ T4879] batman_adv: batadv0: Interface activated: batadv_slave_0 [ 40.387335][ T4879] batman_adv: batadv0: Interface activated: batadv_slave_1 [ 40.395294][ T1367] netdevsim netdevsim0 netdevsim0: set [1, 0] type 2 family 0 port 6081 - 0 [ 40.395338][ T1367] netdevsim netdevsim0 netdevsim1: set [1, 0] type 2 family 0 port 6081 - 0 [ 40.395357][ T1367] netdevsim netdevsim0 netdevsim2: set [1, 0] type 2 family 0 port 6081 - 0 [ 40.395373][ T1367] netdevsim netdevsim0 netdevsim3: set [1, 0] type 2 family 0 port 6081 - 0 [ 40.483358][ T4977] nbd0: detected capacity change from 0 to 121732 [ 41.250903][ T4729] block nbd0: Receive control failed (result -104) [ 41.703374][ T4729] Bluetooth: hci0: command tx timeout [ 43.772862][ T4729] Bluetooth: hci0: command tx timeout [ 45.853109][ T4729] Bluetooth: hci0: command tx timeout [ 47.932853][ T4729] Bluetooth: hci0: command tx timeout [ 64.493903][ T1596] ieee802154 phy0 wpan0: encryption failed: -22 [ 64.493967][ T1596] ieee802154 phy1 wpan1: encryption failed: -22 [ 64.497639][ T1073] cfg80211: failed to load regulatory.db [ 70.893471][ T4361] block nbd0: Possible stuck request 00000000378c5e2a: control (read@0,4096B). Runtime 30 seconds 1970/01/01 00:01:35 executed programs: 1 [ 96.432307][ T50] Bluetooth: hci1: unexpected cc 0x0c03 length: 249 > 1 [ 96.433847][ T50] Bluetooth: hci1: unexpected cc 0x1003 length: 249 > 9 [ 96.434072][ T50] Bluetooth: hci1: unexpected cc 0x1001 length: 249 > 9 [ 96.434399][ T50] Bluetooth: hci1: unexpected cc 0x0c23 length: 249 > 4 [ 96.434602][ T50] Bluetooth: hci1: unexpected cc 0x0c38 length: 249 > 2 [ 96.565246][ T5039] bridge0: port 1(bridge_slave_0) entered blocking state [ 96.565335][ T5039] bridge0: port 1(bridge_slave_0) entered disabled state [ 96.565425][ T5039] bridge_slave_0: entered allmulticast mode [ 96.565839][ T5039] bridge_slave_0: entered promiscuous mode [ 96.567004][ T5039] bridge0: port 2(bridge_slave_1) entered blocking state [ 96.567058][ T5039] bridge0: port 2(bridge_slave_1) entered disabled state [ 96.567104][ T5039] bridge_slave_1: entered allmulticast mode [ 96.567504][ T5039] bridge_slave_1: entered promiscuous mode [ 96.577844][ T5039] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 96.578703][ T5039] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 96.586946][ T5039] team0: Port device team_slave_0 added [ 96.587639][ T5039] team0: Port device team_slave_1 added [ 96.595004][ T5039] batman_adv: batadv0: Adding interface: batadv_slave_0 [ 96.595025][ T5039] 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. [ 96.595040][ T5039] batman_adv: batadv0: Not using interface batadv_slave_0 (retrying later): interface not active [ 96.595531][ T5039] batman_adv: batadv0: Adding interface: batadv_slave_1 [ 96.595538][ T5039] 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. [ 96.595554][ T5039] batman_adv: batadv0: Not using interface batadv_slave_1 (retrying later): interface not active [ 96.612279][ T5039] hsr_slave_0: entered promiscuous mode [ 96.612578][ T5039] hsr_slave_1: entered promiscuous mode [ 96.612765][ T5039] debugfs: 'hsr0' already exists in 'hsr' [ 96.612808][ T5039] Cannot create hsr debugfs directory [ 96.677472][ T5039] netdevsim netdevsim0 netdevsim3 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 96.736934][ T5039] netdevsim netdevsim0 netdevsim2 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 96.806887][ T5039] netdevsim netdevsim0 netdevsim1 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 96.886962][ T5039] netdevsim netdevsim0 netdevsim0 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 97.016359][ T5039] netdevsim netdevsim0 netdevsim0: renamed from eth0 [ 97.018704][ T5039] 8021q: adding VLAN 0 to HW filter on device netdevsim0 [ 97.020423][ T5039] netdevsim netdevsim0 netdevsim1: renamed from eth1 [ 97.022685][ T5039] 8021q: adding VLAN 0 to HW filter on device netdevsim1 [ 97.024497][ T5039] netdevsim netdevsim0 netdevsim2: renamed from eth2 [ 97.026679][ T5039] 8021q: adding VLAN 0 to HW filter on device netdevsim2 [ 97.027069][ T5039] netdevsim netdevsim0 netdevsim3: renamed from eth3 [ 97.028879][ T5039] 8021q: adding VLAN 0 to HW filter on device netdevsim3 [ 97.035831][ T5039] bridge0: port 2(bridge_slave_1) entered blocking state [ 97.035876][ T5039] bridge0: port 2(bridge_slave_1) entered forwarding state [ 97.035951][ T5039] bridge0: port 1(bridge_slave_0) entered blocking state [ 97.035978][ T5039] bridge0: port 1(bridge_slave_0) entered forwarding state [ 97.051193][ T5039] 8021q: adding VLAN 0 to HW filter on device bond0 [ 97.054703][ T4044] bridge0: port 1(bridge_slave_0) entered disabled state [ 97.056186][ T4044] bridge0: port 2(bridge_slave_1) entered disabled state [ 97.060106][ T5039] 8021q: adding VLAN 0 to HW filter on device team0 [ 97.062178][ T1367] bridge0: port 1(bridge_slave_0) entered blocking state [ 97.062216][ T1367] bridge0: port 1(bridge_slave_0) entered forwarding state [ 97.065144][ T4044] bridge0: port 2(bridge_slave_1) entered blocking state [ 97.065167][ T4044] bridge0: port 2(bridge_slave_1) entered forwarding state [ 97.160116][ T5039] 8021q: adding VLAN 0 to HW filter on device batadv0 [ 97.174811][ T5039] veth0_vlan: entered promiscuous mode [ 97.176821][ T5039] veth1_vlan: entered promiscuous mode [ 97.182174][ T5039] veth0_macvtap: entered promiscuous mode [ 97.185315][ T5039] veth1_macvtap: entered promiscuous mode [ 97.190026][ T5039] batman_adv: batadv0: Interface activated: batadv_slave_0 [ 97.191173][ T5039] batman_adv: batadv0: Interface activated: batadv_slave_1 [ 97.194591][ T12] netdevsim netdevsim0 netdevsim0: set [1, 0] type 2 family 0 port 6081 - 0 [ 97.196331][ T12] netdevsim netdevsim0 netdevsim1: set [1, 0] type 2 family 0 port 6081 - 0 [ 97.198040][ T12] netdevsim netdevsim0 netdevsim2: set [1, 0] type 2 family 0 port 6081 - 0 [ 97.202803][ T12] netdevsim netdevsim0 netdevsim3: set [1, 0] type 2 family 0 port 6081 - 0 [ 98.492864][ T50] Bluetooth: hci1: command tx timeout [ 100.572869][ T50] Bluetooth: hci1: command tx timeout [ 100.973459][ T4361] block nbd0: Possible stuck request 00000000378c5e2a: control (read@0,4096B). Runtime 60 seconds [ 102.653174][ T50] Bluetooth: hci1: command tx timeout [ 103.249241][ T4344] udevd[4344]: worker [4881] /devices/virtual/block/nbd0 is taking a long time [ 104.732868][ T50] Bluetooth: hci1: command tx timeout [ 125.933153][ T1596] ieee802154 phy0 wpan0: encryption failed: -22 [ 125.933198][ T1596] ieee802154 phy1 wpan1: encryption failed: -22 [ 131.053309][ T4361] block nbd0: Possible stuck request 00000000378c5e2a: control (read@0,4096B). Runtime 90 seconds 1970/01/01 00:02:32 executed programs: 2 [ 153.258601][ T4729] Bluetooth: hci2: unexpected cc 0x0c03 length: 249 > 1 [ 153.259197][ T4729] Bluetooth: hci2: unexpected cc 0x1003 length: 249 > 9 [ 153.259378][ T4729] Bluetooth: hci2: unexpected cc 0x1001 length: 249 > 9 [ 153.259715][ T4729] Bluetooth: hci2: unexpected cc 0x0c23 length: 249 > 4 [ 153.259915][ T4729] Bluetooth: hci2: unexpected cc 0x0c38 length: 249 > 2 [ 153.395375][ T5081] bridge0: port 1(bridge_slave_0) entered blocking state [ 153.395460][ T5081] bridge0: port 1(bridge_slave_0) entered disabled state [ 153.395526][ T5081] bridge_slave_0: entered allmulticast mode [ 153.395953][ T5081] bridge_slave_0: entered promiscuous mode [ 153.397139][ T5081] bridge0: port 2(bridge_slave_1) entered blocking state [ 153.397184][ T5081] bridge0: port 2(bridge_slave_1) entered disabled state [ 153.397233][ T5081] bridge_slave_1: entered allmulticast mode [ 153.397632][ T5081] bridge_slave_1: entered promiscuous mode [ 153.408304][ T5081] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 153.409209][ T5081] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 153.417081][ T5081] team0: Port device team_slave_0 added [ 153.418488][ T5081] team0: Port device team_slave_1 added [ 153.426025][ T5081] batman_adv: batadv0: Adding interface: batadv_slave_0 [ 153.426047][ T5081] 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. [ 153.426063][ T5081] batman_adv: batadv0: Not using interface batadv_slave_0 (retrying later): interface not active [ 153.426656][ T5081] batman_adv: batadv0: Adding interface: batadv_slave_1 [ 153.426663][ T5081] 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. [ 153.426678][ T5081] batman_adv: batadv0: Not using interface batadv_slave_1 (retrying later): interface not active [ 153.447490][ T5081] hsr_slave_0: entered promiscuous mode [ 153.447822][ T5081] hsr_slave_1: entered promiscuous mode [ 153.448020][ T5081] debugfs: 'hsr0' already exists in 'hsr' [ 153.448031][ T5081] Cannot create hsr debugfs directory [ 153.527796][ T5081] netdevsim netdevsim0 netdevsim3 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 153.606574][ T5081] netdevsim netdevsim0 netdevsim2 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 153.676410][ T5081] netdevsim netdevsim0 netdevsim1 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 153.727001][ T5081] netdevsim netdevsim0 netdevsim0 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 153.836638][ T5081] netdevsim netdevsim0 netdevsim0: renamed from eth0 [ 153.837640][ T5081] 8021q: adding VLAN 0 to HW filter on device netdevsim0 [ 153.837955][ T5081] netdevsim netdevsim0 netdevsim1: renamed from eth1 [ 153.838919][ T5081] 8021q: adding VLAN 0 to HW filter on device netdevsim1 [ 153.839186][ T5081] netdevsim netdevsim0 netdevsim2: renamed from eth2 [ 153.840178][ T5081] 8021q: adding VLAN 0 to HW filter on device netdevsim2 [ 153.840721][ T5081] netdevsim netdevsim0 netdevsim3: renamed from eth3 [ 153.842626][ T5081] 8021q: adding VLAN 0 to HW filter on device netdevsim3 [ 153.850023][ T5081] bridge0: port 2(bridge_slave_1) entered blocking state [ 153.850066][ T5081] bridge0: port 2(bridge_slave_1) entered forwarding state [ 153.850137][ T5081] bridge0: port 1(bridge_slave_0) entered blocking state [ 153.850166][ T5081] bridge0: port 1(bridge_slave_0) entered forwarding state [ 153.868539][ T5081] 8021q: adding VLAN 0 to HW filter on device bond0 [ 153.871373][ T12] bridge0: port 1(bridge_slave_0) entered disabled state [ 153.873340][ T12] bridge0: port 2(bridge_slave_1) entered disabled state [ 153.877714][ T5081] 8021q: adding VLAN 0 to HW filter on device team0 [ 153.884672][ T1367] bridge0: port 1(bridge_slave_0) entered blocking state [ 153.884715][ T1367] bridge0: port 1(bridge_slave_0) entered forwarding state [ 153.885063][ T1367] bridge0: port 2(bridge_slave_1) entered blocking state [ 153.885088][ T1367] bridge0: port 2(bridge_slave_1) entered forwarding state [ 153.890973][ T5081] hsr0: Slave A (hsr_slave_0) is not up; please bring it up to get a fully working HSR network [ 153.890988][ T5081] hsr0: Slave B (hsr_slave_1) is not up; please bring it up to get a fully working HSR network [ 153.984047][ T5081] 8021q: adding VLAN 0 to HW filter on device batadv0 [ 153.995407][ T5081] veth0_vlan: entered promiscuous mode [ 153.998299][ T5081] veth1_vlan: entered promiscuous mode [ 154.006036][ T5081] veth0_macvtap: entered promiscuous mode [ 154.007440][ T5081] veth1_macvtap: entered promiscuous mode [ 154.011421][ T5081] batman_adv: batadv0: Interface activated: batadv_slave_0 [ 154.012570][ T5081] batman_adv: batadv0: Interface activated: batadv_slave_1 [ 154.014904][ T4044] netdevsim netdevsim0 netdevsim0: set [1, 0] type 2 family 0 port 6081 - 0 [ 154.015033][ T4044] netdevsim netdevsim0 netdevsim1: set [1, 0] type 2 family 0 port 6081 - 0 [ 154.015133][ T4044] netdevsim netdevsim0 netdevsim2: set [1, 0] type 2 family 0 port 6081 - 0 [ 154.015277][ T4044] netdevsim netdevsim0 netdevsim3: set [1, 0] type 2 family 0 port 6081 - 0 [ 155.292884][ T4729] Bluetooth: hci2: command tx timeout [ 157.372870][ T4729] Bluetooth: hci2: command tx timeout [ 159.453030][ T4729] Bluetooth: hci2: command tx timeout [ 161.133009][ T4361] block nbd0: Possible stuck request 00000000378c5e2a: control (read@0,4096B). Runtime 120 seconds [ 161.532872][ T4729] Bluetooth: hci2: command tx timeout [ 163.852869][ T50] Bluetooth: hci0: command 0x0406 tx timeout [ 187.373212][ T1596] ieee802154 phy0 wpan0: encryption failed: -22 [ 187.373256][ T1596] ieee802154 phy1 wpan1: encryption failed: -22 [ 191.212980][ T4361] block nbd0: Possible stuck request 00000000378c5e2a: control (read@0,4096B). Runtime 150 seconds [ 193.772947][ T31] I ** replaying previous printk message ** [ 193.772947][ T31] INFO: task syz-executor.0:4977 blocked for more than 143 seconds. [ 193.772976][ T31] Not tainted syzkaller #0 [ 193.772996][ T31] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. [ 193.773003][ T31] task:syz-executor.0 state:D stack:0 pid:4977 tgid:4976 ppid:4879 task_flags:0x400140 flags:0x00000019 [ 193.773022][ T31] Call trace: [ 193.773027][ T31] __switch_to+0x2b0/0x6e0 (T) [ 193.773047][ T31] __schedule+0x1370/0x2d80 [ 193.773057][ T31] schedule+0x13c/0x20c [ 193.773067][ T31] schedule_preempt_disabled+0x18/0x2c [ 193.773077][ T31] __mutex_lock+0x4ec/0xf14 [ 193.773087][ T31] mutex_lock_nested+0x24/0x30 [ 193.773096][ T31] bdev_release+0x128/0x328 [ 193.773107][ T31] blkdev_release+0x20/0x34 [ 193.773116][ T31] __fput+0x338/0x74c [ 193.773125][ T31] ____fput+0x20/0x30 [ 193.773133][ T31] task_work_run+0x1cc/0x25c [ 193.773145][ T31] get_signal+0xf30/0x1094 [ 193.773153][ T31] arch_do_signal_or_restart+0x288/0x444c [ 193.773165][ T31] exit_to_user_mode_loop+0x70/0x17c [ 193.773175][ T31] el0_svc+0x18c/0x260 [ 193.773185][ T31] el0t_64_sync_handler+0x48/0x148 [ 193.773196][ T31] el0t_64_sync+0x198/0x19c [ 193.773214][ T31] [ 193.773214][ T31] Showing all locks held in the system: [ 193.773221][ T31] 1 lock held by khungtaskd/31: [ 193.773225][ T31] #0: ffff800088cf7020 (rcu_read_lock){....}-{1:3}, at: debug_show_all_locks+0x4c/0x188 [ 193.773254][ T31] 2 locks held by pr/ttyAMA-1/41: [ 193.773270][ T31] 2 locks held by getty/4492: [ 193.773275][ T31] #0: ffff0000d16ea0a0 (&tty->ldisc_sem){++++}-{0:0}, at: ldsem_down_read+0x3c/0x4c [ 193.773298][ T31] #1: ffff8000924cb2e8 (&ldata->atomic_read_lock){+.+.}-{4:4}, at: n_tty_read+0x348/0xf78 [ 193.773323][ T31] 1 lock held by udevd/4881: [ 193.773328][ T31] #0: ffff0000c81db350 (&disk->open_mutex){+.+.}-{4:4}, at: bdev_open+0xc4/0x880 [ 193.773349][ T31] 1 lock held by syz-executor.0/4977: [ 193.773354][ T31] #0: ffff0000c81db350 (&disk->open_mutex){+.+.}-{4:4}, at: bdev_release+0x128/0x328 [ 193.773375][ T31] 1 lock held by syz-executor.0/5073: [ 193.773379][ T31] #0: ffff0000c81db350 (&disk->open_mutex){+.+.}-{4:4}, at: bdev_open+0xc4/0x880 [ 193.773400][ T31] 1 lock held by syz-executor.0/5114: [ 193.773404][ T31] #0: ffff0000c81db350 (&disk->open_mutex){+.+.}-{4:4}, at: bdev_open+0xc4/0x880 [ 193.773424][ T31] [ 193.773427][ T31] ============================================= [ 193.773427][ T31] [ 193.773432][ T31] Kernel panic - not syncing: hung_task: blocked tasks [ 193.815010][ T31] CPU: 0 UID: 0 PID: 31 Comm: khungtaskd Not tainted syzkaller #0 PREEMPT [ 193.816488][ T31] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/02/2026 [ 193.818219][ T31] Call trace: [ 193.818783][ T31] show_stack+0x2c/0x3c (C) [ 193.819620][ T31] __dump_stack+0x30/0x40 [ 193.820389][ T31] dump_stack_lvl+0x30/0x12c [ 193.821177][ T31] dump_stack+0x1c/0x28 [ 193.821894][ T31] vpanic+0x594/0xaf8 [ 193.822620][ T31] vpanic+0x0/0xaf8 [ 193.823293][ T31] hung_task_panic+0x0/0x2c [ 193.824141][ T31] kthread+0x304/0x3d4 [ 193.824859][ T31] ret_from_fork+0x10/0x20 [ 193.825660][ T31] SMP: stopping secondary CPUs [ 193.826524][ T31] Kernel Offset: disabled [ 193.827235][ T31] CPU features: 0x14000000,003c0008,27020501,5427fea7 [ 193.828387][ T31] Memory Limit: none [ 194.051424][ T31] Rebooting in 86400 seconds..