Warning: Permanently added '10.128.1.66' (ED25519) to the list of known hosts. 1970/01/01 00:00:47 ignoring optional flag "type"="gce" 1970/01/01 00:00:47 parsed 1 programs [ 47.375330][ T4889] Adding 124996k swap on ./swap-file. Priority:0 extents:1 across:124996k SS 1970/01/01 00:00:47 executed programs: 0 [ 47.392221][ T50] Bluetooth: hci0: unexpected cc 0x0c03 length: 249 > 1 [ 47.394678][ T50] Bluetooth: hci0: unexpected cc 0x1003 length: 249 > 9 [ 47.395253][ T50] Bluetooth: hci0: unexpected cc 0x1001 length: 249 > 9 [ 47.395585][ T50] Bluetooth: hci0: unexpected cc 0x0c23 length: 249 > 4 [ 47.395817][ T50] Bluetooth: hci0: unexpected cc 0x0c38 length: 249 > 2 [ 47.525534][ T4896] bridge0: port 1(bridge_slave_0) entered blocking state [ 47.525620][ T4896] bridge0: port 1(bridge_slave_0) entered disabled state [ 47.525673][ T4896] bridge_slave_0: entered allmulticast mode [ 47.526093][ T4896] bridge_slave_0: entered promiscuous mode [ 47.527194][ T4896] bridge0: port 2(bridge_slave_1) entered blocking state [ 47.527240][ T4896] bridge0: port 2(bridge_slave_1) entered disabled state [ 47.527288][ T4896] bridge_slave_1: entered allmulticast mode [ 47.527702][ T4896] bridge_slave_1: entered promiscuous mode [ 47.537412][ T4896] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 47.538356][ T4896] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 47.546560][ T4896] team0: Port device team_slave_0 added [ 47.547323][ T4896] team0: Port device team_slave_1 added [ 47.554322][ T4896] batman_adv: batadv0: Adding interface: batadv_slave_0 [ 47.554343][ T4896] 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. [ 47.554360][ T4896] batman_adv: batadv0: Not using interface batadv_slave_0 (retrying later): interface not active [ 47.554907][ T4896] batman_adv: batadv0: Adding interface: batadv_slave_1 [ 47.554914][ T4896] 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. [ 47.554928][ T4896] batman_adv: batadv0: Not using interface batadv_slave_1 (retrying later): interface not active [ 47.574798][ T4896] hsr_slave_0: entered promiscuous mode [ 47.575078][ T4896] hsr_slave_1: entered promiscuous mode [ 47.896483][ T4896] netdevsim netdevsim0 netdevsim0: renamed from eth0 [ 47.898959][ T4896] 8021q: adding VLAN 0 to HW filter on device netdevsim0 [ 47.900621][ T4896] netdevsim netdevsim0 netdevsim1: renamed from eth1 [ 47.902981][ T4896] 8021q: adding VLAN 0 to HW filter on device netdevsim1 [ 47.904853][ T4896] netdevsim netdevsim0 netdevsim2: renamed from eth2 [ 47.907281][ T4896] 8021q: adding VLAN 0 to HW filter on device netdevsim2 [ 47.908932][ T4896] netdevsim netdevsim0 netdevsim3: renamed from eth3 [ 47.911056][ T4896] 8021q: adding VLAN 0 to HW filter on device netdevsim3 [ 47.920983][ T4896] bridge0: port 2(bridge_slave_1) entered blocking state [ 47.921019][ T4896] bridge0: port 2(bridge_slave_1) entered forwarding state [ 47.921101][ T4896] bridge0: port 1(bridge_slave_0) entered blocking state [ 47.921135][ T4896] bridge0: port 1(bridge_slave_0) entered forwarding state [ 47.944044][ T4896] 8021q: adding VLAN 0 to HW filter on device bond0 [ 47.949507][ T39] bridge0: port 1(bridge_slave_0) entered disabled state [ 47.950921][ T39] bridge0: port 2(bridge_slave_1) entered disabled state [ 47.957217][ T4896] 8021q: adding VLAN 0 to HW filter on device team0 [ 47.959573][ T15] bridge0: port 1(bridge_slave_0) entered blocking state [ 47.959624][ T15] bridge0: port 1(bridge_slave_0) entered forwarding state [ 47.964347][ T15] bridge0: port 2(bridge_slave_1) entered blocking state [ 47.964395][ T15] bridge0: port 2(bridge_slave_1) entered forwarding state [ 47.972065][ T4896] hsr0: Slave A (hsr_slave_0) is not up; please bring it up to get a fully working HSR network [ 47.972502][ T4896] hsr0: Slave B (hsr_slave_1) is not up; please bring it up to get a fully working HSR network [ 48.072062][ T4896] 8021q: adding VLAN 0 to HW filter on device batadv0 [ 48.083684][ T4896] veth0_vlan: entered promiscuous mode [ 48.086442][ T4896] veth1_vlan: entered promiscuous mode [ 48.097090][ T4896] veth0_macvtap: entered promiscuous mode [ 48.098524][ T4896] veth1_macvtap: entered promiscuous mode [ 48.102850][ T4896] batman_adv: batadv0: Interface activated: batadv_slave_0 [ 48.105910][ T4896] batman_adv: batadv0: Interface activated: batadv_slave_1 [ 48.109309][ T15] netdevsim netdevsim0 netdevsim0: set [1, 0] type 2 family 0 port 6081 - 0 [ 48.109362][ T15] netdevsim netdevsim0 netdevsim1: set [1, 0] type 2 family 0 port 6081 - 0 [ 48.109384][ T15] netdevsim netdevsim0 netdevsim2: set [1, 0] type 2 family 0 port 6081 - 0 [ 48.109401][ T15] netdevsim netdevsim0 netdevsim3: set [1, 0] type 2 family 0 port 6081 - 0 [ 48.214429][ T4993] nbd0: detected capacity change from 0 to 8388607 [ 48.983245][ T50] block nbd0: Receive control failed (result -104) [ 49.444307][ T50] Bluetooth: hci0: command tx timeout [ 51.523863][ T50] Bluetooth: hci0: command tx timeout [ 53.614317][ T50] Bluetooth: hci0: command tx timeout [ 55.683860][ T50] Bluetooth: hci0: command tx timeout [ 64.485058][ T1575] ieee802154 phy0 wpan0: encryption failed: -22 [ 64.485126][ T1575] ieee802154 phy1 wpan1: encryption failed: -22 [ 64.488348][ T856] cfg80211: failed to load regulatory.db [ 78.565954][ T4315] block nbd0: Possible stuck request 0000000094edb20d: control (read@0,4096B). Runtime 30 seconds 1970/01/01 00:01:43 executed programs: 1 [ 104.163194][ T4686] Bluetooth: hci1: unexpected cc 0x0c03 length: 249 > 1 [ 104.165019][ T4686] Bluetooth: hci1: unexpected cc 0x1003 length: 249 > 9 [ 104.165339][ T4686] Bluetooth: hci1: unexpected cc 0x1001 length: 249 > 9 [ 104.165649][ T4686] Bluetooth: hci1: unexpected cc 0x0c23 length: 249 > 4 [ 104.165868][ T4686] Bluetooth: hci1: unexpected cc 0x0c38 length: 249 > 2 [ 104.303968][ T5108] bridge0: port 1(bridge_slave_0) entered blocking state [ 104.304036][ T5108] bridge0: port 1(bridge_slave_0) entered disabled state [ 104.304141][ T5108] bridge_slave_0: entered allmulticast mode [ 104.304566][ T5108] bridge_slave_0: entered promiscuous mode [ 104.305217][ T5108] bridge0: port 2(bridge_slave_1) entered blocking state [ 104.305238][ T5108] bridge0: port 2(bridge_slave_1) entered disabled state [ 104.305288][ T5108] bridge_slave_1: entered allmulticast mode [ 104.305683][ T5108] bridge_slave_1: entered promiscuous mode [ 104.318308][ T5108] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 104.319162][ T5108] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 104.327075][ T5108] team0: Port device team_slave_0 added [ 104.327790][ T5108] team0: Port device team_slave_1 added [ 104.334846][ T5108] batman_adv: batadv0: Adding interface: batadv_slave_0 [ 104.334866][ T5108] 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. [ 104.334880][ T5108] batman_adv: batadv0: Not using interface batadv_slave_0 (retrying later): interface not active [ 104.335369][ T5108] batman_adv: batadv0: Adding interface: batadv_slave_1 [ 104.335376][ T5108] 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. [ 104.335388][ T5108] batman_adv: batadv0: Not using interface batadv_slave_1 (retrying later): interface not active [ 104.356436][ T5108] hsr_slave_0: entered promiscuous mode [ 104.356761][ T5108] hsr_slave_1: entered promiscuous mode [ 104.356962][ T5108] debugfs: 'hsr0' already exists in 'hsr' [ 104.357002][ T5108] Cannot create hsr debugfs directory [ 104.448560][ T5108] netdevsim netdevsim0 netdevsim3 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 104.518491][ T5108] netdevsim netdevsim0 netdevsim2 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 104.577175][ T5108] netdevsim netdevsim0 netdevsim1 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 104.658525][ T5108] netdevsim netdevsim0 netdevsim0 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 104.786654][ T5108] netdevsim netdevsim0 netdevsim0: renamed from eth0 [ 104.789107][ T5108] 8021q: adding VLAN 0 to HW filter on device netdevsim0 [ 104.789582][ T5108] netdevsim netdevsim0 netdevsim1: renamed from eth1 [ 104.791308][ T5108] 8021q: adding VLAN 0 to HW filter on device netdevsim1 [ 104.792584][ T5108] netdevsim netdevsim0 netdevsim2: renamed from eth2 [ 104.793623][ T5108] 8021q: adding VLAN 0 to HW filter on device netdevsim2 [ 104.794012][ T5108] netdevsim netdevsim0 netdevsim3: renamed from eth3 [ 104.796138][ T5108] 8021q: adding VLAN 0 to HW filter on device netdevsim3 [ 104.803111][ T5108] bridge0: port 2(bridge_slave_1) entered blocking state [ 104.803159][ T5108] bridge0: port 2(bridge_slave_1) entered forwarding state [ 104.803242][ T5108] bridge0: port 1(bridge_slave_0) entered blocking state [ 104.803274][ T5108] bridge0: port 1(bridge_slave_0) entered forwarding state [ 104.821286][ T5108] 8021q: adding VLAN 0 to HW filter on device bond0 [ 104.828286][ T1202] bridge0: port 1(bridge_slave_0) entered disabled state [ 104.829664][ T1202] bridge0: port 2(bridge_slave_1) entered disabled state [ 104.833674][ T5108] 8021q: adding VLAN 0 to HW filter on device team0 [ 104.836254][ T15] bridge0: port 1(bridge_slave_0) entered blocking state [ 104.836294][ T15] bridge0: port 1(bridge_slave_0) entered forwarding state [ 104.839016][ T15] bridge0: port 2(bridge_slave_1) entered blocking state [ 104.839066][ T15] bridge0: port 2(bridge_slave_1) entered forwarding state [ 104.849811][ T5108] hsr0: Slave A (hsr_slave_0) is not up; please bring it up to get a fully working HSR network [ 104.849843][ T5108] hsr0: Slave B (hsr_slave_1) is not up; please bring it up to get a fully working HSR network [ 104.938611][ T5108] 8021q: adding VLAN 0 to HW filter on device batadv0 [ 104.949106][ T5108] veth0_vlan: entered promiscuous mode [ 104.950795][ T5108] veth1_vlan: entered promiscuous mode [ 104.964901][ T5108] veth0_macvtap: entered promiscuous mode [ 104.965951][ T5108] veth1_macvtap: entered promiscuous mode [ 104.969960][ T5108] batman_adv: batadv0: Interface activated: batadv_slave_0 [ 104.973182][ T5108] batman_adv: batadv0: Interface activated: batadv_slave_1 [ 104.977114][ T1202] netdevsim netdevsim0 netdevsim0: set [1, 0] type 2 family 0 port 6081 - 0 [ 104.977145][ T1202] netdevsim netdevsim0 netdevsim1: set [1, 0] type 2 family 0 port 6081 - 0 [ 104.977159][ T1202] netdevsim netdevsim0 netdevsim2: set [1, 0] type 2 family 0 port 6081 - 0 [ 104.977173][ T1202] netdevsim netdevsim0 netdevsim3: set [1, 0] type 2 family 0 port 6081 - 0 [ 106.253898][ T50] Bluetooth: hci1: command tx timeout [ 108.333848][ T50] Bluetooth: hci1: command tx timeout [ 108.654326][ T4315] block nbd0: Possible stuck request 0000000094edb20d: control (read@0,4096B). Runtime 60 seconds [ 110.403981][ T50] Bluetooth: hci1: command tx timeout [ 111.038950][ T4299] udevd[4299]: worker [4898] /devices/virtual/block/nbd0 is taking a long time [ 112.484173][ T50] Bluetooth: hci1: command tx timeout [ 125.924306][ T1575] ieee802154 phy0 wpan0: encryption failed: -22 [ 125.924349][ T1575] ieee802154 phy1 wpan1: encryption failed: -22 [ 138.724515][ T10] block nbd0: Possible stuck request 0000000094edb20d: control (read@0,4096B). Runtime 90 seconds 1970/01/01 00:02:40 executed programs: 2 [ 161.048576][ T4686] Bluetooth: hci2: unexpected cc 0x0c03 length: 249 > 1 [ 161.049014][ T4686] Bluetooth: hci2: unexpected cc 0x1003 length: 249 > 9 [ 161.049186][ T4686] Bluetooth: hci2: unexpected cc 0x1001 length: 249 > 9 [ 161.049519][ T4686] Bluetooth: hci2: unexpected cc 0x0c23 length: 249 > 4 [ 161.049716][ T4686] Bluetooth: hci2: unexpected cc 0x0c38 length: 249 > 2 [ 161.181546][ T5149] bridge0: port 1(bridge_slave_0) entered blocking state [ 161.181587][ T5149] bridge0: port 1(bridge_slave_0) entered disabled state [ 161.181684][ T5149] bridge_slave_0: entered allmulticast mode [ 161.182108][ T5149] bridge_slave_0: entered promiscuous mode [ 161.182770][ T5149] bridge0: port 2(bridge_slave_1) entered blocking state [ 161.182789][ T5149] bridge0: port 2(bridge_slave_1) entered disabled state [ 161.182835][ T5149] bridge_slave_1: entered allmulticast mode [ 161.183242][ T5149] bridge_slave_1: entered promiscuous mode [ 161.194321][ T5149] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 161.196780][ T5149] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 161.205070][ T5149] team0: Port device team_slave_0 added [ 161.205841][ T5149] team0: Port device team_slave_1 added [ 161.212768][ T5149] batman_adv: batadv0: Adding interface: batadv_slave_0 [ 161.212797][ T5149] 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. [ 161.212810][ T5149] batman_adv: batadv0: Not using interface batadv_slave_0 (retrying later): interface not active [ 161.213302][ T5149] batman_adv: batadv0: Adding interface: batadv_slave_1 [ 161.213309][ T5149] 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. [ 161.213323][ T5149] batman_adv: batadv0: Not using interface batadv_slave_1 (retrying later): interface not active [ 161.234323][ T5149] hsr_slave_0: entered promiscuous mode [ 161.235957][ T5149] hsr_slave_1: entered promiscuous mode [ 161.237191][ T5149] debugfs: 'hsr0' already exists in 'hsr' [ 161.238182][ T5149] Cannot create hsr debugfs directory [ 161.279932][ T5149] netdevsim netdevsim0 netdevsim3 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 161.347150][ T5149] netdevsim netdevsim0 netdevsim2 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 161.417333][ T5149] netdevsim netdevsim0 netdevsim1 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 161.478672][ T5149] netdevsim netdevsim0 netdevsim0 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 161.607604][ T5149] netdevsim netdevsim0 netdevsim0: renamed from eth0 [ 161.609934][ T5149] 8021q: adding VLAN 0 to HW filter on device netdevsim0 [ 161.610528][ T5149] netdevsim netdevsim0 netdevsim1: renamed from eth1 [ 161.612048][ T5149] 8021q: adding VLAN 0 to HW filter on device netdevsim1 [ 161.612506][ T5149] netdevsim netdevsim0 netdevsim2: renamed from eth2 [ 161.615195][ T5149] 8021q: adding VLAN 0 to HW filter on device netdevsim2 [ 161.615553][ T5149] netdevsim netdevsim0 netdevsim3: renamed from eth3 [ 161.617314][ T5149] 8021q: adding VLAN 0 to HW filter on device netdevsim3 [ 161.624699][ T5149] bridge0: port 2(bridge_slave_1) entered blocking state [ 161.624739][ T5149] bridge0: port 2(bridge_slave_1) entered forwarding state [ 161.624851][ T5149] bridge0: port 1(bridge_slave_0) entered blocking state [ 161.624888][ T5149] bridge0: port 1(bridge_slave_0) entered forwarding state [ 161.642388][ T5149] 8021q: adding VLAN 0 to HW filter on device bond0 [ 161.646708][ T1202] bridge0: port 1(bridge_slave_0) entered disabled state [ 161.648061][ T1202] bridge0: port 2(bridge_slave_1) entered disabled state [ 161.651587][ T5149] 8021q: adding VLAN 0 to HW filter on device team0 [ 161.655985][ T15] bridge0: port 1(bridge_slave_0) entered blocking state [ 161.656025][ T15] bridge0: port 1(bridge_slave_0) entered forwarding state [ 161.657934][ T15] bridge0: port 2(bridge_slave_1) entered blocking state [ 161.657955][ T15] bridge0: port 2(bridge_slave_1) entered forwarding state [ 161.752091][ T5149] 8021q: adding VLAN 0 to HW filter on device batadv0 [ 161.763239][ T5149] veth0_vlan: entered promiscuous mode [ 161.766044][ T5149] veth1_vlan: entered promiscuous mode [ 161.772253][ T5149] veth0_macvtap: entered promiscuous mode [ 161.773746][ T5149] veth1_macvtap: entered promiscuous mode [ 161.777883][ T5149] batman_adv: batadv0: Interface activated: batadv_slave_0 [ 161.780432][ T5149] batman_adv: batadv0: Interface activated: batadv_slave_1 [ 161.783434][ T15] netdevsim netdevsim0 netdevsim0: set [1, 0] type 2 family 0 port 6081 - 0 [ 161.786094][ T15] netdevsim netdevsim0 netdevsim1: set [1, 0] type 2 family 0 port 6081 - 0 [ 161.788699][ T15] netdevsim netdevsim0 netdevsim2: set [1, 0] type 2 family 0 port 6081 - 0 [ 161.790320][ T15] netdevsim netdevsim0 netdevsim3: set [1, 0] type 2 family 0 port 6081 - 0 [ 163.123933][ T4686] Bluetooth: hci2: command tx timeout [ 165.203860][ T4686] Bluetooth: hci2: command tx timeout [ 167.283942][ T4686] Bluetooth: hci2: command tx timeout [ 168.804151][ T10] block nbd0: Possible stuck request 0000000094edb20d: control (read@0,4096B). Runtime 120 seconds [ 169.363855][ T4686] Bluetooth: hci2: command tx timeout [ 174.083877][ T50] Bluetooth: hci0: command 0x0406 tx timeout [ 187.364375][ T1575] ieee802154 phy0 wpan0: encryption failed: -22 [ 187.364438][ T1575] ieee802154 phy1 wpan1: encryption failed: -22 [ 198.884366][ T10] block nbd0: Possible stuck request 0000000094edb20d: control (read@0,4096B). Runtime 150 seconds [ 212.323989][ T31] INFO: task syz-executor.0:4993 blocked for ** replaying previous printk message ** [ 212.323989][ T31] INFO: task syz-executor.0:4993 blocked for more than 143 seconds. [ 212.324993][ T31] Not tainted syzkaller #0 [ 212.325006][ T31] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. [ 212.325013][ T31] task:syz-executor.0 state:D stack:0 pid:4993 tgid:4992 ppid:4896 task_flags:0x400140 flags:0x00000011 [ 212.325031][ T31] Call trace: [ 212.325035][ T31] __switch_to+0x2b0/0x6e0 (T) [ 212.325052][ T31] __schedule+0x1bec/0x2dcc [ 212.325062][ T31] schedule+0x140/0x218 [ 212.325072][ T31] schedule_preempt_disabled+0x18/0x2c [ 212.325082][ T31] __mutex_lock+0x4e4/0xef8 [ 212.325092][ T31] mutex_lock_nested+0x24/0x30 [ 212.325101][ T31] bdev_release+0x128/0x32c [ 212.325111][ T31] blkdev_release+0x20/0x34 [ 212.325119][ T31] __fput+0x340/0x744 [ 212.325132][ T31] ____fput+0x20/0x30 [ 212.325142][ T31] task_work_run+0x1c4/0x254 [ 212.325152][ T31] exit_to_user_mode_loop+0x10c/0x17c [ 212.325164][ T31] el0_svc+0x18c/0x260 [ 212.325175][ T31] el0t_64_sync_handler+0x48/0x148 [ 212.325185][ T31] el0t_64_sync+0x198/0x19c [ 212.325212][ T31] [ 212.325212][ T31] Showing all locks held in the system: [ 212.325219][ T31] 1 lock held by khungtaskd/31: [ 212.325225][ T31] #0: ffff800088ad72a0 (rcu_read_lock){....}-{1:3}, at: debug_show_all_locks+0x4c/0x188 [ 212.325252][ T31] 2 locks held by pr/ttyAMA-1/41: [ 212.325274][ T31] 2 locks held by getty/4448: [ 212.325278][ T31] #0: ffff0000cf5b40a0 (&tty->ldisc_sem){++++}-{0:0}, at: ldsem_down_read+0x3c/0x4c [ 212.325303][ T31] #1: ffff80009229b2e8 (&ldata->atomic_read_lock){+.+.}-{4:4}, at: n_tty_read+0x354/0xf84 [ 212.325328][ T31] 1 lock held by udevd/4898: [ 212.325333][ T31] #0: ffff0000c834e350 (&disk->open_mutex){+.+.}-{4:4}, at: bdev_open+0xcc/0x8cc [ 212.325356][ T31] 1 lock held by syz-executor.0/4993: [ 212.325360][ T31] #0: ffff0000c834e350 (&disk->open_mutex){+.+.}-{4:4}, at: bdev_release+0x128/0x32c [ 212.325381][ T31] 1 lock held by syz-executor.0/5141: [ 212.325385][ T31] #0: ffff0000c834e350 (&disk->open_mutex){+.+.}-{4:4}, at: bdev_open+0xcc/0x8cc [ 212.325406][ T31] 1 lock held by syz-executor.0/5183: [ 212.325410][ T31] #0: ffff0000c834e350 (&disk->open_mutex){+.+.}-{4:4}, at: bdev_open+0xcc/0x8cc [ 212.325430][ T31] [ 212.325433][ T31] ============================================= [ 212.325433][ T31] [ 212.325438][ T31] Kernel panic - not syncing: hung_task: blocked tasks [ 212.362802][ T31] CPU: 1 UID: 0 PID: 31 Comm: khungtaskd Not tainted syzkaller #0 PREEMPT [ 212.364194][ T31] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/18/2026 [ 212.365765][ T31] Call trace: [ 212.366282][ T31] show_stack+0x2c/0x3c (C) [ 212.367005][ T31] __dump_stack+0x30/0x40 [ 212.367679][ T31] dump_stack_lvl+0x30/0x12c [ 212.368426][ T31] dump_stack+0x1c/0x28 [ 212.369103][ T31] vpanic+0x594/0xaf4 [ 212.369709][ T31] vpanic+0x0/0xaf4 [ 212.370291][ T31] hung_task_panic+0x0/0x2c [ 212.370950][ T31] kthread+0x2f8/0x3c8 [ 212.371621][ T31] ret_from_fork+0x10/0x20 [ 212.372333][ T31] SMP: stopping secondary CPUs [ 212.373118][ T31] Kernel Offset: disabled [ 212.373787][ T31] CPU features: 0x08000000,003c0008,27020501,5427fea7 [ 212.374914][ T31] Memory Limit: none [ 212.588085][ T31] Rebooting in 86400 seconds..