[ 34.387801][ T1843] netdevsim netdevsim0 netdevsim3 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 36.206254][ T1843] netdevsim netdevsim0 netdevsim2 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 36.265967][ T1843] netdevsim netdevsim0 netdevsim1 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 36.307980][ T1843] netdevsim netdevsim0 netdevsim0 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 37.465653][ T1843] device hsr_slave_0 left promiscuous mode [ 37.502871][ T1843] device hsr_slave_1 left promiscuous mode [ 37.582635][ T1843] batman_adv: batadv0: Interface deactivated: batadv_slave_0 [ 37.583873][ T1843] batman_adv: batadv0: Removing interface: batadv_slave_0 [ 37.585917][ T1843] batman_adv: batadv0: Interface deactivated: batadv_slave_1 [ 37.587089][ T1843] batman_adv: batadv0: Removing interface: batadv_slave_1 [ 37.588504][ T1843] device bridge_slave_1 left promiscuous mode [ 37.590038][ T1843] bridge0: port 2(bridge_slave_1) entered disabled state [ 37.644673][ T1843] device bridge_slave_0 left promiscuous mode [ 37.645864][ T1843] bridge0: port 1(bridge_slave_0) entered disabled state [ 37.812452][ T1843] device veth1_macvtap left promiscuous mode [ 37.813616][ T1843] device veth0_macvtap left promiscuous mode [ 37.814664][ T1843] device veth1_vlan left promiscuous mode [ 37.815756][ T1843] device veth0_vlan left promiscuous mode [ 37.928645][ T1843] team0 (unregistering): Port device team_slave_1 removed [ 37.933711][ T1843] team0 (unregistering): Port device team_slave_0 removed [ 37.938350][ T1843] bond0 (unregistering): (slave bond_slave_1): Releasing backup interface [ 37.977694][ T1843] bond0 (unregistering): (slave bond_slave_0): Releasing backup interface [ 38.106866][ T1843] bond0 (unregistering): Released all slaves Warning: Permanently added '10.128.1.93' (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 [ 39.025904][ T4245] Adding 124996k swap on ./swap-file. Priority:0 extents:1 across:124996k SSFS 1970/01/01 00:00:39 executed programs: 0 [ 39.101359][ T4253] chnl_net:caif_netlink_parms(): no params data found [ 39.120096][ T4253] bridge0: port 1(bridge_slave_0) entered blocking state [ 39.121392][ T4253] bridge0: port 1(bridge_slave_0) entered disabled state [ 39.122998][ T4253] device bridge_slave_0 entered promiscuous mode [ 39.126004][ T4253] bridge0: port 2(bridge_slave_1) entered blocking state [ 39.127250][ T4253] bridge0: port 2(bridge_slave_1) entered disabled state [ 39.128705][ T4253] device bridge_slave_1 entered promiscuous mode [ 39.137331][ T4253] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 39.139899][ T4253] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 39.149269][ T4253] team0: Port device team_slave_0 added [ 39.151369][ T4253] team0: Port device team_slave_1 added [ 39.158746][ T4253] batman_adv: batadv0: Adding interface: batadv_slave_0 [ 39.159939][ T4253] 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 1560 would solve the problem. [ 39.164222][ T4253] batman_adv: batadv0: Not using interface batadv_slave_0 (retrying later): interface not active [ 39.166686][ T4253] batman_adv: batadv0: Adding interface: batadv_slave_1 [ 39.167785][ T4253] 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 1560 would solve the problem. [ 39.171650][ T4253] batman_adv: batadv0: Not using interface batadv_slave_1 (retrying later): interface not active [ 39.243377][ T4253] device hsr_slave_0 entered promiscuous mode [ 39.282418][ T4253] device hsr_slave_1 entered promiscuous mode [ 39.964453][ T4253] netdevsim netdevsim0 netdevsim0: renamed from eth0 [ 40.024316][ T4253] netdevsim netdevsim0 netdevsim1: renamed from eth1 [ 40.104062][ T4253] netdevsim netdevsim0 netdevsim2: renamed from eth2 [ 40.144218][ T4253] netdevsim netdevsim0 netdevsim3: renamed from eth3 [ 40.209261][ T4253] 8021q: adding VLAN 0 to HW filter on device bond0 [ 40.214361][ T1843] IPv6: ADDRCONF(NETDEV_CHANGE): veth1: link becomes ready [ 40.215923][ T1843] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 40.219793][ T4253] 8021q: adding VLAN 0 to HW filter on device team0 [ 40.226209][ T1843] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bridge: link becomes ready [ 40.227871][ T1843] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 40.229429][ T1843] bridge0: port 1(bridge_slave_0) entered blocking state [ 40.230717][ T1843] bridge0: port 1(bridge_slave_0) entered forwarding state [ 40.234208][ T1843] IPv6: ADDRCONF(NETDEV_CHANGE): bridge0: link becomes ready [ 40.237395][ T1843] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bridge: link becomes ready [ 40.239835][ T1843] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 40.241533][ T1843] bridge0: port 2(bridge_slave_1) entered blocking state [ 40.242833][ T1843] bridge0: port 2(bridge_slave_1) entered forwarding state [ 40.252555][ T1843] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bond: link becomes ready [ 40.254835][ T1843] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bond: link becomes ready [ 40.256535][ T1843] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_team: link becomes ready [ 40.258627][ T1843] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 40.260268][ T1843] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_team: link becomes ready [ 40.263779][ T1843] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 40.265566][ T1843] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_hsr: link becomes ready [ 40.267074][ T1843] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 40.271008][ T4253] hsr0: Slave B (hsr_slave_1) is not up; please bring it up to get a fully working HSR network [ 40.275642][ T4253] IPv6: ADDRCONF(NETDEV_CHANGE): hsr0: link becomes ready [ 40.277501][ T1843] IPv6: ADDRCONF(NETDEV_CHANGE): team0: link becomes ready [ 40.279427][ T1843] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_hsr: link becomes ready [ 40.281238][ T1843] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 40.327524][ T4253] 8021q: adding VLAN 0 to HW filter on device batadv0 [ 40.330697][ T1843] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan1: link becomes ready [ 40.332337][ T1843] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan0: link becomes ready [ 40.339145][ T148] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_virt_wifi: link becomes ready [ 40.341022][ T148] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_virt_wifi: link becomes ready [ 40.349467][ T148] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_vlan: link becomes ready [ 40.351233][ T148] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_vlan: link becomes ready [ 40.354852][ T148] IPv6: ADDRCONF(NETDEV_CHANGE): vlan0: link becomes ready [ 40.356453][ T148] IPv6: ADDRCONF(NETDEV_CHANGE): vlan1: link becomes ready [ 40.359332][ T4253] device veth0_vlan entered promiscuous mode [ 40.363726][ T4253] device veth1_vlan entered promiscuous mode [ 40.373825][ T1843] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan0: link becomes ready [ 40.375605][ T1843] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan1: link becomes ready [ 40.377135][ T1843] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_macvtap: link becomes ready [ 40.378768][ T1843] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_macvtap: link becomes ready [ 40.381401][ T4253] device veth0_macvtap entered promiscuous mode [ 40.383981][ T4253] device veth1_macvtap entered promiscuous mode [ 40.389292][ T4253] batman_adv: batadv0: Interface activated: batadv_slave_0 [ 40.390594][ T1843] IPv6: ADDRCONF(NETDEV_CHANGE): macvtap0: link becomes ready [ 40.392768][ T1843] IPv6: ADDRCONF(NETDEV_CHANGE): macsec0: link becomes ready [ 40.394946][ T1843] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_0: link becomes ready [ 40.396511][ T1843] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_batadv: link becomes ready [ 40.401834][ T4253] batman_adv: batadv0: Interface activated: batadv_slave_1 [ 40.404187][ T148] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_1: link becomes ready [ 40.405945][ T148] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_batadv: link becomes ready [ 40.409149][ T4253] netdevsim netdevsim0 netdevsim0: set [1, 0] type 2 family 0 port 6081 - 0 [ 40.410647][ T4253] netdevsim netdevsim0 netdevsim1: set [1, 0] type 2 family 0 port 6081 - 0 [ 40.411928][ T4253] netdevsim netdevsim0 netdevsim2: set [1, 0] type 2 family 0 port 6081 - 0 [ 40.414493][ T4253] netdevsim netdevsim0 netdevsim3: set [1, 0] type 2 family 0 port 6081 - 0 [ 40.563994][ T4369] loop0: detected capacity change from 0 to 32768 [ 41.062702][ T25] Bluetooth: hci0: command 0x0409 tx timeout [ 43.142401][ T25] Bluetooth: hci0: command 0x041b tx timeout [ 45.222201][ T25] Bluetooth: hci0: command 0x040f tx timeout [ 47.302184][ T25] Bluetooth: hci0: command 0x0419 tx timeout [ 69.623922][ T2063] ieee802154 phy0 wpan0: encryption failed: -22 [ 69.625068][ T2063] ieee802154 phy1 wpan1: encryption failed: -22 [ 69.628008][ T21] cfg80211: failed to load regulatory.db 1970/01/01 00:01:10 executed programs: 1 [ 71.525594][ T4496] chnl_net:caif_netlink_parms(): no params data found [ 71.545675][ T4496] bridge0: port 1(bridge_slave_0) entered blocking state [ 71.547089][ T4496] bridge0: port 1(bridge_slave_0) entered disabled state [ 71.548622][ T4496] device bridge_slave_0 entered promiscuous mode [ 71.550767][ T4496] bridge0: port 2(bridge_slave_1) entered blocking state [ 71.552015][ T4496] bridge0: port 2(bridge_slave_1) entered disabled state [ 71.553651][ T4496] device bridge_slave_1 entered promiscuous mode [ 71.562594][ T4496] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 71.565255][ T4496] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 71.574148][ T4496] team0: Port device team_slave_0 added [ 71.576082][ T4496] team0: Port device team_slave_1 added [ 71.583814][ T4496] batman_adv: batadv0: Adding interface: batadv_slave_0 [ 71.584887][ T4496] 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 1560 would solve the problem. [ 71.588936][ T4496] batman_adv: batadv0: Not using interface batadv_slave_0 (retrying later): interface not active [ 71.591573][ T4496] batman_adv: batadv0: Adding interface: batadv_slave_1 [ 71.593066][ T4496] 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 1560 would solve the problem. [ 71.597277][ T4496] batman_adv: batadv0: Not using interface batadv_slave_1 (retrying later): interface not active [ 71.663306][ T4496] device hsr_slave_0 entered promiscuous mode [ 71.702388][ T4496] device hsr_slave_1 entered promiscuous mode [ 71.742276][ T4496] debugfs: Directory 'hsr0' with parent 'hsr' already present! [ 71.743676][ T4496] Cannot create hsr debugfs directory [ 71.782409][ T4496] netdevsim netdevsim0 netdevsim3 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 71.821071][ T4496] netdevsim netdevsim0 netdevsim2 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 71.868747][ T4496] netdevsim netdevsim0 netdevsim1 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 71.913807][ T4496] netdevsim netdevsim0 netdevsim0 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 72.063696][ T4496] netdevsim netdevsim0 netdevsim0: renamed from eth0 [ 72.103855][ T4496] netdevsim netdevsim0 netdevsim1: renamed from eth1 [ 72.144375][ T4496] netdevsim netdevsim0 netdevsim2: renamed from eth2 [ 72.183995][ T4496] netdevsim netdevsim0 netdevsim3: renamed from eth3 [ 72.241282][ T4496] bridge0: port 2(bridge_slave_1) entered blocking state [ 72.242653][ T4496] bridge0: port 2(bridge_slave_1) entered forwarding state [ 72.244047][ T4496] bridge0: port 1(bridge_slave_0) entered blocking state [ 72.245248][ T4496] bridge0: port 1(bridge_slave_0) entered forwarding state [ 72.267884][ T4496] 8021q: adding VLAN 0 to HW filter on device bond0 [ 72.274884][ T347] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 72.276677][ T347] bridge0: port 1(bridge_slave_0) entered disabled state [ 72.278915][ T347] bridge0: port 2(bridge_slave_1) entered disabled state [ 72.280683][ T347] IPv6: ADDRCONF(NETDEV_CHANGE): bond0: link becomes ready [ 72.285934][ T4496] 8021q: adding VLAN 0 to HW filter on device team0 [ 72.289274][ T136] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 72.290812][ T136] bridge0: port 1(bridge_slave_0) entered blocking state [ 72.292017][ T136] bridge0: port 1(bridge_slave_0) entered forwarding state [ 72.297526][ T148] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 72.299117][ T148] bridge0: port 2(bridge_slave_1) entered blocking state [ 72.300449][ T148] bridge0: port 2(bridge_slave_1) entered forwarding state [ 72.311263][ T4496] hsr0: Slave A (hsr_slave_0) is not up; please bring it up to get a fully working HSR network [ 72.314738][ T4496] hsr0: Slave B (hsr_slave_1) is not up; please bring it up to get a fully working HSR network [ 72.319087][ T136] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 72.320920][ T136] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 72.323187][ T136] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 72.325937][ T136] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 72.330060][ T136] IPv6: ADDRCONF(NETDEV_CHANGE): hsr0: link becomes ready [ 72.331552][ T136] IPv6: ADDRCONF(NETDEV_CHANGE): team0: link becomes ready [ 72.372559][ T148] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan0: link becomes ready [ 72.373737][ T148] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan1: link becomes ready [ 72.378132][ T4496] 8021q: adding VLAN 0 to HW filter on device batadv0 [ 72.387421][ T148] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_virt_wifi: link becomes ready [ 72.397019][ T148] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_vlan: link becomes ready [ 72.398729][ T148] IPv6: ADDRCONF(NETDEV_CHANGE): vlan0: link becomes ready [ 72.400198][ T148] IPv6: ADDRCONF(NETDEV_CHANGE): vlan1: link becomes ready [ 72.404511][ T4496] device veth0_vlan entered promiscuous mode [ 72.408777][ T4496] device veth1_vlan entered promiscuous mode [ 72.420528][ T148] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan0: link becomes ready [ 72.422020][ T148] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan1: link becomes ready [ 72.425590][ T148] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_macvtap: link becomes ready [ 72.428902][ T4496] device veth0_macvtap entered promiscuous mode [ 72.431551][ T4496] device veth1_macvtap entered promiscuous mode [ 72.439248][ T4496] batman_adv: The newly added mac address (aa:aa:aa:aa:aa:3e) already exists on: batadv_slave_0 [ 72.441144][ T4496] batman_adv: It is strongly recommended to keep mac addresses unique to avoid problems! [ 72.444129][ T4496] batman_adv: batadv0: Interface activated: batadv_slave_0 [ 72.445617][ T136] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_batadv: link becomes ready [ 72.447782][ T136] IPv6: ADDRCONF(NETDEV_CHANGE): macvtap0: link becomes ready [ 72.455514][ T4496] batman_adv: The newly added mac address (aa:aa:aa:aa:aa:3f) already exists on: batadv_slave_1 [ 72.457243][ T4496] batman_adv: It is strongly recommended to keep mac addresses unique to avoid problems! [ 72.459613][ T4496] batman_adv: batadv0: Interface activated: batadv_slave_1 [ 72.462092][ T4496] netdevsim netdevsim0 netdevsim0: set [1, 0] type 2 family 0 port 6081 - 0 [ 72.464322][ T4496] netdevsim netdevsim0 netdevsim1: set [1, 0] type 2 family 0 port 6081 - 0 [ 72.465687][ T4496] netdevsim netdevsim0 netdevsim2: set [1, 0] type 2 family 0 port 6081 - 0 [ 72.466957][ T4496] netdevsim netdevsim0 netdevsim3: set [1, 0] type 2 family 0 port 6081 - 0 [ 72.469301][ T136] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_batadv: link becomes ready [ 73.542901][ T25] Bluetooth: hci1: command 0x0409 tx timeout 1970/01/01 00:01:15 executed programs: 20 [ 75.622769][ T25] Bluetooth: hci1: command 0x041b tx timeout [ 77.702358][ T1540] Bluetooth: hci1: command 0x040f tx timeout [ 79.792377][ T1540] Bluetooth: hci1: command 0x0419 tx timeout 1970/01/01 00:01:20 executed programs: 51 1970/01/01 00:01:25 executed programs: 81 1970/01/01 00:01:30 executed programs: 111 1970/01/01 00:01:36 executed programs: 141 1970/01/01 00:01:41 executed programs: 171 1970/01/01 00:01:46 executed programs: 201 1970/01/01 00:01:51 executed programs: 231 1970/01/01 00:01:56 executed programs: 261 1970/01/01 00:02:01 executed programs: 290 1970/01/01 00:02:06 executed programs: 320 [ 131.063501][ T2063] ieee802154 phy0 wpan0: encryption failed: -22 [ 131.064792][ T2063] ieee802154 phy1 wpan1: encryption failed: -22 1970/01/01 00:02:11 executed programs: 347 1970/01/01 00:02:16 executed programs: 375 1970/01/01 00:02:21 executed programs: 405 1970/01/01 00:02:26 executed programs: 435 1970/01/01 00:02:31 executed programs: 464 1970/01/01 00:02:37 executed programs: 494 1970/01/01 00:02:42 executed programs: 525 [ 163.862203][ T1540] Bluetooth: hci0: command 0x0406 tx timeout 1970/01/01 00:02:47 executed programs: 556 1970/01/01 00:02:52 executed programs: 586 1970/01/01 00:02:57 executed programs: 616 1970/01/01 00:03:02 executed programs: 645 1970/01/01 00:03:07 executed programs: 675 [ 192.513720][ T2063] ieee802154 phy0 wpan0: encryption failed: -22 [ 192.514802][ T2063] ieee802154 phy1 wpan1: encryption failed: -22 1970/01/01 00:03:12 executed programs: 703 [ 193.142314][ T27] INFO: task kworker/u4:5:1843 blocked for more than 143 seconds. [ 193.143698][ T27] Not tainted syzkaller #0 [ 193.144507][ T27] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. [ 193.145846][ T27] task:kworker/u4:5 state:D stack: 0 pid: 1843 ppid: 2 flags:0x00000008 [ 193.147352][ T27] Workqueue: writeback wb_workfn (flush-7:0) [ 193.148101][ T27] Call trace: [ 193.148534][ T27] __switch_to+0x2f4/0x540 [ 193.149134][ T27] __schedule+0xe20/0x1c6c [ 193.149696][ T27] schedule+0x11c/0x1c8 [ 193.150221][ T27] schedule_preempt_disabled+0x18/0x2c [ 193.151052][ T27] __mutex_lock_common+0xae0/0x1ea4 [ 193.152096][ T27] mutex_lock_nested+0xac/0x11c [ 193.165328][ T27] jfs_commit_inode+0x19c/0x498 [ 193.166233][ T27] jfs_write_inode+0x128/0x1f8 [ 193.167096][ T27] __writeback_single_inode+0x560/0x11f0 [ 193.168142][ T27] writeback_sb_inodes+0x868/0x13e4 [ 193.169027][ T27] __writeback_inodes_wb+0x104/0x370 [ 193.169896][ T27] wb_writeback+0x408/0xe84 [ 193.170695][ T27] wb_workfn+0xaf8/0xe3c [ 193.171394][ T27] process_one_work+0x7a4/0x1178 [ 193.177304][ T27] worker_thread+0x8fc/0x103c [ 193.178101][ T27] kthread+0x37c/0x460 [ 193.178809][ T27] ret_from_fork+0x10/0x20 [ 193.179560][ T27] [ 193.179560][ T27] Showing all locks held in the system: [ 193.180878][ T27] 1 lock held by khungtaskd/27: [ 193.181693][ T27] #0: ffff800014561460 (rcu_read_lock){....}-{1:2}, at: rcu_lock_acquire+0xc/0x44 [ 193.188762][ T27] 4 locks held by kworker/u4:5/1843: [ 193.189672][ T27] #0: ffff0000c1e37938 ((wq_completion)writeback){+.+.}-{0:0}, at: process_one_work+0x67c/0x1178 [ 193.191549][ T27] #1: ffff800024b57c40 ((work_completion)(&(&wb->dwork)->work)){+.+.}-{0:0}, at: process_one_work+0x6c0/0x1178 [ 193.197204][ T27] #2: ffff0000d725a0e0 (&type->s_umount_key#49){.+.+}-{3:3}, at: trylock_super+0x24/0xf4 [ 193.198838][ T27] #3: ffff0000e315b008 (&jfs_ip->commit_mutex){+.+.}-{3:3}, at: jfs_commit_inode+0x19c/0x498 [ 193.200786][ T27] 2 locks held by getty/3803: [ 193.201620][ T27] #0: ffff0000d4fa2098 (&tty->ldisc_sem){++++}-{0:0}, at: ldsem_down_read+0x40/0x50 [ 193.208048][ T27] #1: ffff80001bf6e2e8 (&ldata->atomic_read_lock){+.+.}-{3:3}, at: n_tty_read+0x2ec/0xf90 [ 193.209723][ T27] 4 locks held by syz-executor.0/4369: [ 193.210564][ T27] [ 193.210935][ T27] ============================================= [ 193.210935][ T27] [ 193.212748][ T27] Kernel panic - not syncing: hung_task: blocked tasks [ 193.213885][ T27] CPU: 1 PID: 27 Comm: khungtaskd Not tainted syzkaller #0 [ 193.215190][ T27] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/02/2026 [ 193.216974][ T27] Call trace: [ 193.217525][ T27] dump_backtrace+0x0/0x458 [ 193.218278][ T27] show_stack+0x2c/0x3c [ 193.219040][ T27] __dump_stack+0x30/0x40 [ 193.219812][ T27] dump_stack_lvl+0xf4/0x15c [ 193.220585][ T27] dump_stack+0x1c/0x5c [ 193.221273][ T27] panic+0x2fc/0x860 [ 193.221924][ T27] hung_task_panic+0x0/0x2c [ 193.222708][ T27] kthread+0x37c/0x460 [ 193.223356][ T27] ret_from_fork+0x10/0x20 [ 193.224038][ T27] SMP: stopping secondary CPUs [ 193.224876][ T27] Kernel Offset: disabled [ 193.225636][ T27] CPU features: 0xa,000003c1,7d33ffd9 [ 193.226499][ T27] Memory Limit: none [ 193.426880][ T27] Rebooting in 86400 seconds..