Warning: Permanently added '10.128.1.150' (ED25519) to the list of known hosts. 2026/03/29 18:59:12 ignoring optional flag "type"="gce" 2026/03/29 18:59:12 parsed 1 programs [ 87.989611][ T30] kauditd_printk_skb: 24 callbacks suppressed [ 87.989627][ T30] audit: type=1400 audit(1774810752.667:96): avc: denied { unlink } for pid=5998 comm="syz-executor" name="swap-file" dev="sda1" ino=2027 scontext=root:sysadm_r:sysadm_t tcontext=system_u:object_r:unlabeled_t tclass=file permissive=1 trawcon="root:object_r:swapfile_t" 2026/03/29 18:59:13 executed programs: 0 [ 89.248578][ T5998] Adding 124996k swap on ./swap-file. Priority:0 extents:1 across:124996k [ 89.296661][ T5131] Bluetooth: hci0: unexpected cc 0x0c03 length: 249 > 1 [ 89.304471][ T5131] Bluetooth: hci0: unexpected cc 0x1003 length: 249 > 9 [ 89.312949][ T5131] Bluetooth: hci0: unexpected cc 0x1001 length: 249 > 9 [ 89.322066][ T5131] Bluetooth: hci0: unexpected cc 0x0c23 length: 249 > 4 [ 89.329728][ T5131] Bluetooth: hci0: unexpected cc 0x0c38 length: 249 > 2 [ 89.442155][ T6004] chnl_net:caif_netlink_parms(): no params data found [ 89.497370][ T6004] bridge0: port 1(bridge_slave_0) entered blocking state [ 89.505001][ T6004] bridge0: port 1(bridge_slave_0) entered disabled state [ 89.512381][ T6004] bridge_slave_0: entered allmulticast mode [ 89.519222][ T6004] bridge_slave_0: entered promiscuous mode [ 89.527064][ T6004] bridge0: port 2(bridge_slave_1) entered blocking state [ 89.534187][ T6004] bridge0: port 2(bridge_slave_1) entered disabled state [ 89.541794][ T6004] bridge_slave_1: entered allmulticast mode [ 89.549204][ T6004] bridge_slave_1: entered promiscuous mode [ 89.573271][ T6004] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 89.584329][ T6004] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 89.610487][ T6004] team0: Port device team_slave_0 added [ 89.618718][ T6004] team0: Port device team_slave_1 added [ 89.640007][ T6004] batman_adv: batadv0: Adding interface: batadv_slave_0 [ 89.647264][ T6004] 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. [ 89.673681][ T6004] batman_adv: batadv0: Not using interface batadv_slave_0 (retrying later): interface not active [ 89.685465][ T6004] batman_adv: batadv0: Adding interface: batadv_slave_1 [ 89.692930][ T6004] 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. [ 89.719436][ T6004] batman_adv: batadv0: Not using interface batadv_slave_1 (retrying later): interface not active [ 89.755359][ T6004] hsr_slave_0: entered promiscuous mode [ 89.762291][ T6004] hsr_slave_1: entered promiscuous mode [ 90.143487][ T6004] netdevsim netdevsim0 netdevsim0: renamed from eth0 [ 90.155571][ T6004] netdevsim netdevsim0 netdevsim1: renamed from eth1 [ 90.167640][ T6004] netdevsim netdevsim0 netdevsim2: renamed from eth2 [ 90.179211][ T6004] netdevsim netdevsim0 netdevsim3: renamed from eth3 [ 90.212492][ T6004] bridge0: port 2(bridge_slave_1) entered blocking state [ 90.219678][ T6004] bridge0: port 2(bridge_slave_1) entered forwarding state [ 90.227192][ T6004] bridge0: port 1(bridge_slave_0) entered blocking state [ 90.234323][ T6004] bridge0: port 1(bridge_slave_0) entered forwarding state [ 90.302324][ T6004] 8021q: adding VLAN 0 to HW filter on device bond0 [ 90.323822][ T1153] bridge0: port 1(bridge_slave_0) entered disabled state [ 90.332768][ T1153] bridge0: port 2(bridge_slave_1) entered disabled state [ 90.350967][ T6004] 8021q: adding VLAN 0 to HW filter on device team0 [ 90.365787][ T3477] bridge0: port 1(bridge_slave_0) entered blocking state [ 90.372987][ T3477] bridge0: port 1(bridge_slave_0) entered forwarding state [ 90.401297][ T3477] bridge0: port 2(bridge_slave_1) entered blocking state [ 90.408469][ T3477] bridge0: port 2(bridge_slave_1) entered forwarding state [ 90.626598][ T6004] 8021q: adding VLAN 0 to HW filter on device batadv0 [ 90.688876][ T6004] veth0_vlan: entered promiscuous mode [ 90.701947][ T6004] veth1_vlan: entered promiscuous mode [ 90.735711][ T6004] veth0_macvtap: entered promiscuous mode [ 90.747679][ T6004] veth1_macvtap: entered promiscuous mode [ 90.770505][ T6004] batman_adv: batadv0: Interface activated: batadv_slave_0 [ 90.785721][ T6004] batman_adv: batadv0: Interface activated: batadv_slave_1 [ 90.801954][ T3477] netdevsim netdevsim0 netdevsim0: set [1, 0] type 2 family 0 port 6081 - 0 [ 90.818940][ T3477] netdevsim netdevsim0 netdevsim1: set [1, 0] type 2 family 0 port 6081 - 0 [ 90.829341][ T3477] netdevsim netdevsim0 netdevsim2: set [1, 0] type 2 family 0 port 6081 - 0 [ 90.845820][ T3477] netdevsim netdevsim0 netdevsim3: set [1, 0] type 2 family 0 port 6081 - 0 [ 91.013565][ T6065] nbd0: detected capacity change from 0 to 2 [ 91.357360][ T5818] Bluetooth: hci0: command tx timeout [ 91.760790][ T5131] block nbd0: Receive control failed (result -104) [ 93.436754][ T5131] Bluetooth: hci0: command tx timeout [ 95.506773][ T5131] Bluetooth: hci0: command tx timeout [ 97.586385][ T5131] Bluetooth: hci0: command tx timeout [ 121.187759][ T5146] block nbd0: Possible stuck request ffff888027558000: control (read@0,1024B). Runtime 30 seconds [ 132.708387][ T1298] ieee802154 phy0 wpan0: encryption failed: -22 [ 132.714663][ T1298] ieee802154 phy1 wpan1: encryption failed: -22 2026/03/29 19:00:10 executed programs: 1 [ 146.940655][ T5818] Bluetooth: hci1: unexpected cc 0x0c03 length: 249 > 1 [ 146.948758][ T5818] Bluetooth: hci1: unexpected cc 0x1003 length: 249 > 9 [ 146.957401][ T5818] Bluetooth: hci1: unexpected cc 0x1001 length: 249 > 9 [ 146.965171][ T5818] Bluetooth: hci1: unexpected cc 0x0c23 length: 249 > 4 [ 146.973318][ T5818] Bluetooth: hci1: unexpected cc 0x0c38 length: 249 > 2 [ 147.100875][ T6204] chnl_net:caif_netlink_parms(): no params data found [ 147.157342][ T6204] bridge0: port 1(bridge_slave_0) entered blocking state [ 147.164618][ T6204] bridge0: port 1(bridge_slave_0) entered disabled state [ 147.171882][ T6204] bridge_slave_0: entered allmulticast mode [ 147.178850][ T6204] bridge_slave_0: entered promiscuous mode [ 147.186135][ T6204] bridge0: port 2(bridge_slave_1) entered blocking state [ 147.193730][ T6204] bridge0: port 2(bridge_slave_1) entered disabled state [ 147.201033][ T6204] bridge_slave_1: entered allmulticast mode [ 147.207919][ T6204] bridge_slave_1: entered promiscuous mode [ 147.234246][ T6204] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 147.245345][ T6204] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 147.271255][ T6204] team0: Port device team_slave_0 added [ 147.279486][ T6204] team0: Port device team_slave_1 added [ 147.301545][ T6204] batman_adv: batadv0: Adding interface: batadv_slave_0 [ 147.308824][ T6204] 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. [ 147.334721][ T6204] batman_adv: batadv0: Not using interface batadv_slave_0 (retrying later): interface not active [ 147.346558][ T6204] batman_adv: batadv0: Adding interface: batadv_slave_1 [ 147.353521][ T6204] 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. [ 147.380631][ T6204] batman_adv: batadv0: Not using interface batadv_slave_1 (retrying later): interface not active [ 147.415264][ T6204] hsr_slave_0: entered promiscuous mode [ 147.421500][ T6204] hsr_slave_1: entered promiscuous mode [ 147.427769][ T6204] debugfs: 'hsr0' already exists in 'hsr' [ 147.433555][ T6204] Cannot create hsr debugfs directory [ 147.515410][ T6204] netdevsim netdevsim0 netdevsim3 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 147.576351][ T6204] netdevsim netdevsim0 netdevsim2 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 147.646107][ T6204] netdevsim netdevsim0 netdevsim1 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 147.699755][ T6204] netdevsim netdevsim0 netdevsim0 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 147.794696][ T6204] netdevsim netdevsim0 netdevsim0: renamed from eth0 [ 147.809295][ T6204] netdevsim netdevsim0 netdevsim1: renamed from eth1 [ 147.818875][ T6204] netdevsim netdevsim0 netdevsim2: renamed from eth2 [ 147.828440][ T6204] netdevsim netdevsim0 netdevsim3: renamed from eth3 [ 147.852438][ T6204] bridge0: port 2(bridge_slave_1) entered blocking state [ 147.859558][ T6204] bridge0: port 2(bridge_slave_1) entered forwarding state [ 147.867030][ T6204] bridge0: port 1(bridge_slave_0) entered blocking state [ 147.874111][ T6204] bridge0: port 1(bridge_slave_0) entered forwarding state [ 147.913866][ T6204] 8021q: adding VLAN 0 to HW filter on device bond0 [ 147.929872][ T13] bridge0: port 1(bridge_slave_0) entered disabled state [ 147.938803][ T13] bridge0: port 2(bridge_slave_1) entered disabled state [ 147.951657][ T6204] 8021q: adding VLAN 0 to HW filter on device team0 [ 147.962657][ T1153] bridge0: port 1(bridge_slave_0) entered blocking state [ 147.969811][ T1153] bridge0: port 1(bridge_slave_0) entered forwarding state [ 147.982325][ T13] bridge0: port 2(bridge_slave_1) entered blocking state [ 147.989468][ T13] bridge0: port 2(bridge_slave_1) entered forwarding state [ 148.125561][ T6204] 8021q: adding VLAN 0 to HW filter on device batadv0 [ 148.160410][ T6204] veth0_vlan: entered promiscuous mode [ 148.170344][ T6204] veth1_vlan: entered promiscuous mode [ 148.193634][ T6204] veth0_macvtap: entered promiscuous mode [ 148.202223][ T6204] veth1_macvtap: entered promiscuous mode [ 148.217699][ T6204] batman_adv: batadv0: Interface activated: batadv_slave_0 [ 148.232514][ T6204] batman_adv: batadv0: Interface activated: batadv_slave_1 [ 148.245603][ T3477] netdevsim netdevsim0 netdevsim0: set [1, 0] type 2 family 0 port 6081 - 0 [ 148.263068][ T3477] netdevsim netdevsim0 netdevsim1: set [1, 0] type 2 family 0 port 6081 - 0 [ 148.272457][ T3477] netdevsim netdevsim0 netdevsim2: set [1, 0] type 2 family 0 port 6081 - 0 [ 148.282274][ T3477] netdevsim netdevsim0 netdevsim3: set [1, 0] type 2 family 0 port 6081 - 0 [ 149.026440][ T5818] Bluetooth: hci1: command tx timeout [ 151.106348][ T5818] Bluetooth: hci1: command tx timeout [ 151.267204][ T5146] block nbd0: Possible stuck request ffff888027558000: control (read@0,1024B). Runtime 60 seconds [ 151.336366][ T5181] udevd[5181]: worker [6022] /devices/virtual/block/nbd0 is taking a long time [ 153.188516][ T5818] Bluetooth: hci1: command tx timeout [ 155.266403][ T5818] Bluetooth: hci1: command tx timeout [ 181.347217][ T5146] block nbd0: Possible stuck request ffff888027558000: control (read@0,1024B). Runtime 90 seconds [ 194.148809][ T1298] ieee802154 phy0 wpan0: encryption failed: -22 [ 194.155123][ T1298] ieee802154 phy1 wpan1: encryption failed: -22 2026/03/29 19:01:08 executed programs: 2 [ 204.369891][ T5131] Bluetooth: hci2: unexpected cc 0x0c03 length: 249 > 1 [ 204.378406][ T5131] Bluetooth: hci2: unexpected cc 0x1003 length: 249 > 9 [ 204.386030][ T5131] Bluetooth: hci2: unexpected cc 0x1001 length: 249 > 9 [ 204.394622][ T5131] Bluetooth: hci2: unexpected cc 0x0c23 length: 249 > 4 [ 204.402866][ T5131] Bluetooth: hci2: unexpected cc 0x0c38 length: 249 > 2 [ 204.525919][ T6234] chnl_net:caif_netlink_parms(): no params data found [ 204.583200][ T6234] bridge0: port 1(bridge_slave_0) entered blocking state [ 204.590635][ T6234] bridge0: port 1(bridge_slave_0) entered disabled state [ 204.597845][ T6234] bridge_slave_0: entered allmulticast mode [ 204.604650][ T6234] bridge_slave_0: entered promiscuous mode [ 204.612063][ T6234] bridge0: port 2(bridge_slave_1) entered blocking state [ 204.619244][ T6234] bridge0: port 2(bridge_slave_1) entered disabled state [ 204.627616][ T6234] bridge_slave_1: entered allmulticast mode [ 204.634464][ T6234] bridge_slave_1: entered promiscuous mode [ 204.658464][ T6234] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 204.669886][ T6234] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 204.696674][ T6234] team0: Port device team_slave_0 added [ 204.703866][ T6234] team0: Port device team_slave_1 added [ 204.725845][ T6234] batman_adv: batadv0: Adding interface: batadv_slave_0 [ 204.733945][ T6234] 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. [ 204.760749][ T6234] batman_adv: batadv0: Not using interface batadv_slave_0 (retrying later): interface not active [ 204.772590][ T6234] batman_adv: batadv0: Adding interface: batadv_slave_1 [ 204.779596][ T6234] 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. [ 204.805708][ T6234] batman_adv: batadv0: Not using interface batadv_slave_1 (retrying later): interface not active [ 204.840730][ T6234] hsr_slave_0: entered promiscuous mode [ 204.846954][ T6234] hsr_slave_1: entered promiscuous mode [ 204.852912][ T6234] debugfs: 'hsr0' already exists in 'hsr' [ 204.858815][ T6234] Cannot create hsr debugfs directory [ 204.941685][ T6234] netdevsim netdevsim0 netdevsim3 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 205.016954][ T6234] netdevsim netdevsim0 netdevsim2 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 205.057182][ T6234] netdevsim netdevsim0 netdevsim1 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 205.129578][ T6234] netdevsim netdevsim0 netdevsim0 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 205.232183][ T6234] netdevsim netdevsim0 netdevsim0: renamed from eth0 [ 205.241539][ T6234] netdevsim netdevsim0 netdevsim1: renamed from eth1 [ 205.250721][ T6234] netdevsim netdevsim0 netdevsim2: renamed from eth2 [ 205.260200][ T6234] netdevsim netdevsim0 netdevsim3: renamed from eth3 [ 205.284952][ T6234] bridge0: port 2(bridge_slave_1) entered blocking state [ 205.292517][ T6234] bridge0: port 2(bridge_slave_1) entered forwarding state [ 205.300021][ T6234] bridge0: port 1(bridge_slave_0) entered blocking state [ 205.307238][ T6234] bridge0: port 1(bridge_slave_0) entered forwarding state [ 205.351586][ T6234] 8021q: adding VLAN 0 to HW filter on device bond0 [ 205.365989][ T13] bridge0: port 1(bridge_slave_0) entered disabled state [ 205.375084][ T13] bridge0: port 2(bridge_slave_1) entered disabled state [ 205.387566][ T6234] 8021q: adding VLAN 0 to HW filter on device team0 [ 205.400248][ T3477] bridge0: port 1(bridge_slave_0) entered blocking state [ 205.407356][ T3477] bridge0: port 1(bridge_slave_0) entered forwarding state [ 205.420212][ T3477] bridge0: port 2(bridge_slave_1) entered blocking state [ 205.427390][ T3477] bridge0: port 2(bridge_slave_1) entered forwarding state [ 205.559364][ T6234] 8021q: adding VLAN 0 to HW filter on device batadv0 [ 205.591336][ T6234] veth0_vlan: entered promiscuous mode [ 205.600893][ T6234] veth1_vlan: entered promiscuous mode [ 205.625456][ T6234] veth0_macvtap: entered promiscuous mode [ 205.634282][ T6234] veth1_macvtap: entered promiscuous mode [ 205.649122][ T6234] batman_adv: batadv0: Interface activated: batadv_slave_0 [ 205.662465][ T6234] batman_adv: batadv0: Interface activated: batadv_slave_1 [ 205.677963][ T3477] netdevsim netdevsim0 netdevsim0: set [1, 0] type 2 family 0 port 6081 - 0 [ 205.688122][ T3477] netdevsim netdevsim0 netdevsim1: set [1, 0] type 2 family 0 port 6081 - 0 [ 205.701714][ T3477] netdevsim netdevsim0 netdevsim2: set [1, 0] type 2 family 0 port 6081 - 0 [ 205.712097][ T3477] netdevsim netdevsim0 netdevsim3: set [1, 0] type 2 family 0 port 6081 - 0 [ 206.466457][ T5818] Bluetooth: hci2: command tx timeout [ 208.546326][ T5818] Bluetooth: hci2: command tx timeout [ 210.626972][ T5131] Bluetooth: hci2: command tx timeout [ 211.430819][ T5146] block nbd0: Possible stuck request ffff888027558000: control (read@0,1024B). Runtime 120 seconds [ 211.586415][ T5131] Bluetooth: hci0: command 0x0406 tx timeout [ 212.706888][ T5818] Bluetooth: hci2: command tx timeout [ 241.506575][ T2365] block nbd0: Possible stuck request ffff888027558000: control (read@0,1024B). Runtime 150 seconds [ 249.826650][ T31] INFO: task syz-executor.0:6062 blocked for more than 143 seconds. [ 249.834715][ T31] Not tainted syzkaller #0 [ 249.839708][ T31] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. [ 249.848440][ T31] task:syz-executor.0 state:D stack:27464 pid:6062 tgid:6061 ppid:6004 task_flags:0x400140 flags:0x00080002 [ 249.860425][ T31] Call Trace: [ 249.863707][ T31] [ 249.866663][ T31] __schedule+0xfee/0x6120 [ 249.871107][ T31] ? __lock_acquire+0x4a5/0x2630 [ 249.876030][ T31] ? __pfx___schedule+0x10/0x10 [ 249.880936][ T31] ? find_held_lock+0x2b/0x80 [ 249.885619][ T31] ? schedule+0x2bf/0x390 [ 249.889993][ T31] schedule+0xdd/0x390 [ 249.894062][ T31] schedule_preempt_disabled+0x13/0x30 [ 249.899568][ T31] __mutex_lock+0xc9a/0x1b90 [ 249.904179][ T31] ? bdev_open+0x41a/0xe40 [ 249.908814][ T31] ? rcu_is_watching+0x12/0xc0 [ 249.913783][ T31] ? trace_kmem_cache_alloc+0xf3/0x120 [ 249.919400][ T31] ? __pfx___mutex_lock+0x10/0x10 [ 249.924502][ T31] ? lockdep_init_map_type+0x5c/0x250 [ 249.929969][ T31] ? lockdep_init_map_type+0x5c/0x250 [ 249.935363][ T31] ? file_init_path+0x48e/0x670 [ 249.940308][ T31] ? bdev_open+0x41a/0xe40 [ 249.944739][ T31] bdev_open+0x41a/0xe40 [ 249.949043][ T31] ? iput+0x3a/0x40 [ 249.952853][ T31] bdev_file_open_by_dev+0x179/0x210 [ 249.958190][ T31] disk_scan_partitions+0x1ef/0x320 [ 249.963396][ T31] blkdev_common_ioctl+0x12a1/0x2ba0 [ 249.968730][ T31] ? __pfx_blkdev_common_ioctl+0x10/0x10 [ 249.974375][ T31] ? __sanitizer_cov_trace_switch+0x54/0x90 [ 249.980335][ T31] ? do_vfs_ioctl+0x226/0x13e0 [ 249.985114][ T31] ? __pfx_do_vfs_ioctl+0x10/0x10 [ 249.990504][ T31] ? __pfx_ioctl_has_perm.constprop.0.isra.0+0x10/0x10 [ 249.997444][ T31] ? __fget_files+0x215/0x3d0 [ 250.002126][ T31] blkdev_ioctl+0x43b/0x6f0 [ 250.006663][ T31] ? __pfx_blkdev_ioctl+0x10/0x10 [ 250.011686][ T31] ? selinux_file_ioctl+0x139/0x290 [ 250.016956][ T31] ? selinux_file_ioctl+0xb4/0x290 [ 250.022071][ T31] ? __pfx_blkdev_ioctl+0x10/0x10 [ 250.027151][ T31] __x64_sys_ioctl+0x18e/0x210 [ 250.031926][ T31] do_syscall_64+0x106/0xf80 [ 250.036560][ T31] ? clear_bhb_loop+0x40/0x90 [ 250.041237][ T31] entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 250.047181][ T31] RIP: 0033:0x7f448646d079 [ 250.051640][ T31] RSP: 002b:00007f44872d1078 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 [ 250.060145][ T31] RAX: ffffffffffffffda RBX: 00007f44865abf80 RCX: 00007f448646d079 [ 250.068199][ T31] RDX: 0000000000000000 RSI: 000000000000125f RDI: 0000000000000003 [ 250.076170][ T31] RBP: 00007f44864ce498 R08: 0000000000000000 R09: 0000000000000000 [ 250.084211][ T31] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 [ 250.092216][ T31] R13: 000000000000000b R14: 00007f44865abf80 R15: 00007ffdb04861c8 [ 250.100501][ T31] [ 250.103506][ T31] INFO: task syz-executor.0:6065 blocked for more than 143 seconds. [ 250.111508][ T31] Not tainted syzkaller #0 [ 250.116481][ T31] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. [ 250.125142][ T31] task:syz-executor.0 state:D stack:28504 pid:6065 tgid:6061 ppid:6004 task_flags:0x400140 flags:0x00080003 [ 250.137180][ T31] Call Trace: [ 250.140452][ T31] [ 250.143360][ T31] __schedule+0xfee/0x6120 [ 250.147815][ T31] ? __lock_acquire+0x4a5/0x2630 [ 250.152751][ T31] ? __lock_acquire+0x4a5/0x2630 [ 250.157734][ T31] ? __pfx___schedule+0x10/0x10 [ 250.162597][ T31] ? find_held_lock+0x2b/0x80 [ 250.167305][ T31] ? schedule+0x2bf/0x390 [ 250.171641][ T31] schedule+0xdd/0x390 [ 250.175787][ T31] schedule_preempt_disabled+0x13/0x30 [ 250.181283][ T31] __mutex_lock+0xc9a/0x1b90 [ 250.185878][ T31] ? __lock_acquire+0x4a5/0x2630 [ 250.190834][ T31] ? bdev_release+0x15a/0x6d0 [ 250.195542][ T31] ? __pfx___mutex_lock+0x10/0x10 [ 250.200652][ T31] ? find_held_lock+0x2b/0x80 [ 250.205341][ T31] ? do_raw_spin_unlock+0x145/0x1e0 [ 250.210613][ T31] ? bdev_release+0x15a/0x6d0 [ 250.215289][ T31] bdev_release+0x15a/0x6d0 [ 250.219849][ T31] ? __pfx_blkdev_release+0x10/0x10 [ 250.225054][ T31] blkdev_release+0x15/0x20 [ 250.229858][ T31] __fput+0x3ff/0xb40 [ 250.233855][ T31] task_work_run+0x150/0x240 [ 250.238536][ T31] ? __pfx_task_work_run+0x10/0x10 [ 250.243664][ T31] get_signal+0x1bd/0x21e0 [ 250.248133][ T31] ? __pfx_get_signal+0x10/0x10 [ 250.252985][ T31] ? task_work_add+0x201/0x3b0 [ 250.257828][ T31] arch_do_signal_or_restart+0x91/0x7a0 [ 250.263382][ T31] ? __pfx_arch_do_signal_or_restart+0x10/0x10 [ 250.269598][ T31] ? selinux_file_ioctl+0x139/0x290 [ 250.274801][ T31] ? selinux_file_ioctl+0xb4/0x290 [ 250.279976][ T31] exit_to_user_mode_loop+0x86/0x4a0 [ 250.285284][ T31] do_syscall_64+0x67c/0xf80 [ 250.289902][ T31] ? clear_bhb_loop+0x40/0x90 [ 250.294630][ T31] entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 250.300589][ T31] RIP: 0033:0x7f448646d079 [ 250.305005][ T31] RSP: 002b:00007f44872b0078 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 [ 250.313470][ T31] RAX: 0000000000000000 RBX: 00007f44865ac050 RCX: 00007f448646d079 [ 250.321519][ T31] RDX: 0000000000000000 RSI: 000000000000ab03 RDI: 0000000000000006 [ 250.329724][ T31] RBP: 00007f44864ce498 R08: 0000000000000000 R09: 0000000000000000 [ 250.337755][ T31] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 [ 250.345746][ T31] R13: 000000000000006e R14: 00007f44865ac050 R15: 00007ffdb04861c8 [ 250.353822][ T31] [ 250.356893][ T31] [ 250.356893][ T31] Showing all locks held in the system: [ 250.364588][ T31] 1 lock held by khungtaskd/31: [ 250.369461][ T31] #0: ffffffff8e7e7920 (rcu_read_lock){....}-{1:3}, at: debug_show_all_locks+0x3d/0x184 [ 250.379727][ T31] 2 locks held by getty/5566: [ 250.384404][ T31] #0: ffff888037d630a0 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x24/0x80 [ 250.394186][ T31] #1: ffffc9000332b2f0 (&ldata->atomic_read_lock){+.+.}-{4:4}, at: n_tty_read+0x419/0x1500 [ 250.404354][ T31] 1 lock held by udevd/6022: [ 250.409066][ T31] #0: ffff888027460358 (&disk->open_mutex){+.+.}-{4:4}, at: bdev_open+0x41a/0xe40 [ 250.418446][ T31] 1 lock held by syz-executor.0/6062: [ 250.423792][ T31] #0: ffff888027460358 (&disk->open_mutex){+.+.}-{4:4}, at: bdev_open+0x41a/0xe40 [ 250.433250][ T31] 1 lock held by syz-executor.0/6065: [ 250.438664][ T31] #0: ffff888027460358 (&disk->open_mutex){+.+.}-{4:4}, at: bdev_release+0x15a/0x6d0 [ 250.448272][ T31] 1 lock held by syz-executor.0/6224: [ 250.453637][ T31] #0: ffff888027460358 (&disk->open_mutex){+.+.}-{4:4}, at: bdev_open+0x41a/0xe40 [ 250.462989][ T31] 1 lock held by syz-executor.0/6225: [ 250.468500][ T31] #0: ffff888027460358 (&disk->open_mutex){+.+.}-{4:4}, at: bdev_open+0x41a/0xe40 [ 250.477976][ T31] 1 lock held by syz-executor.0/6253: [ 250.483342][ T31] #0: ffff888027460358 (&disk->open_mutex){+.+.}-{4:4}, at: bdev_open+0x41a/0xe40 [ 250.492707][ T31] 1 lock held by syz-executor.0/6254: [ 250.498113][ T31] #0: ffff888027460358 (&disk->open_mutex){+.+.}-{4:4}, at: bdev_open+0x41a/0xe40 [ 250.507538][ T31] [ 250.509857][ T31] ============================================= [ 250.509857][ T31] [ 250.518331][ T31] NMI backtrace for cpu 1 [ 250.518355][ T31] CPU: 1 UID: 0 PID: 31 Comm: khungtaskd Not tainted syzkaller #0 PREEMPT(full) [ 250.518375][ T31] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/12/2026 [ 250.518384][ T31] Call Trace: [ 250.518391][ T31] [ 250.518397][ T31] dump_stack_lvl+0x100/0x190 [ 250.518431][ T31] nmi_cpu_backtrace.cold+0x12d/0x151 [ 250.518452][ T31] ? __pfx_nmi_raise_cpu_backtrace+0x10/0x10 [ 250.518471][ T31] nmi_trigger_cpumask_backtrace+0x1d7/0x230 [ 250.518498][ T31] sys_info+0x141/0x190 [ 250.518518][ T31] watchdog+0xd25/0x1050 [ 250.518554][ T31] ? __pfx_watchdog+0x10/0x10 [ 250.518582][ T31] ? __kthread_parkme+0x18c/0x230 [ 250.518612][ T31] ? kthread+0x13a/0x450 [ 250.518630][ T31] ? __pfx_watchdog+0x10/0x10 [ 250.518655][ T31] kthread+0x370/0x450 [ 250.518673][ T31] ? __pfx_kthread+0x10/0x10 [ 250.518695][ T31] ret_from_fork+0x754/0xd80 [ 250.518718][ T31] ? __pfx_ret_from_fork+0x10/0x10 [ 250.518741][ T31] ? __switch_to+0x7b4/0x1120 [ 250.518767][ T31] ? __pfx_kthread+0x10/0x10 [ 250.518789][ T31] ret_from_fork_asm+0x1a/0x30 [ 250.518827][ T31] [ 250.518854][ T31] Sending NMI from CPU 1 to CPUs 0: [ 250.638234][ C0] NMI backtrace for cpu 0 [ 250.638249][ C0] CPU: 0 UID: 0 PID: 0 Comm: swapper/0 Not tainted syzkaller #0 PREEMPT(full) [ 250.638270][ C0] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/12/2026 [ 250.638281][ C0] RIP: 0010:pv_native_safe_halt+0xf/0x20 [ 250.638313][ C0] Code: d8 81 02 c3 cc cc cc cc 0f 1f 00 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 f3 0f 1e fa 66 90 0f 00 2d a3 91 1a 00 fb f4 fc 35 03 00 66 2e 0f 1f 84 00 00 00 00 00 66 90 90 90 90 90 90 [ 250.638329][ C0] RSP: 0018:ffffffff8e407e00 EFLAGS: 00000242 [ 250.638344][ C0] RAX: 00000000001143cb RBX: ffffffff8e4975c0 RCX: ffffffff8b90fc75 [ 250.638356][ C0] RDX: 0000000000000000 RSI: ffffffff8de79cf2 RDI: ffffffff8c1b1920 [ 250.638368][ C0] RBP: 0000000000000000 R08: 0000000000000001 R09: ffffed101708679d [ 250.638378][ C0] R10: ffff8880b8433ceb R11: 0000000000000000 R12: 0000000000000000 [ 250.638389][ C0] R13: fffffbfff1c92eb8 R14: 0000000000000000 R15: ffffffff90d9c310 [ 250.638401][ C0] FS: 0000000000000000(0000) GS:ffff88812433c000(0000) knlGS:0000000000000000 [ 250.638418][ C0] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 250.638429][ C0] CR2: 000055a9a80cd168 CR3: 000000000e598000 CR4: 00000000003526f0 [ 250.638440][ C0] Call Trace: [ 250.638447][ C0] [ 250.638453][ C0] default_idle+0x9/0x10 [ 250.638470][ C0] default_idle_call+0x6c/0xb0 [ 250.638488][ C0] do_idle+0x464/0x590 [ 250.638513][ C0] ? __pfx_do_idle+0x10/0x10 [ 250.638538][ C0] cpu_startup_entry+0x4f/0x60 [ 250.638561][ C0] rest_init+0x251/0x260 [ 250.638586][ C0] ? __pfx_x86_late_time_init+0x10/0x10 [ 250.638618][ C0] start_kernel+0x47f/0x480 [ 250.638641][ C0] x86_64_start_reservations+0x24/0x30 [ 250.638666][ C0] x86_64_start_kernel+0x12b/0x130 [ 250.638691][ C0] common_startup_64+0x13e/0x148 [ 250.638719][ C0] [ 250.820083][ T31] Kernel panic - not syncing: hung_task: blocked tasks [ 250.826938][ T31] CPU: 0 UID: 0 PID: 31 Comm: khungtaskd Not tainted syzkaller #0 PREEMPT(full) [ 250.836018][ T31] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/12/2026 [ 250.846055][ T31] Call Trace: [ 250.849322][ T31] [ 250.852229][ T31] dump_stack_lvl+0x100/0x190 [ 250.856891][ T31] vpanic+0x552/0x970 [ 250.860851][ T31] ? __pfx_vpanic+0x10/0x10 [ 250.865324][ T31] ? nmi_trigger_cpumask_backtrace+0x182/0x230 [ 250.871465][ T31] panic+0xd1/0xe0 [ 250.875158][ T31] ? __pfx_panic+0x10/0x10 [ 250.879635][ T31] ? nmi_trigger_cpumask_backtrace+0x1b5/0x230 [ 250.885784][ T31] ? nmi_trigger_cpumask_backtrace+0x1f6/0x230 [ 250.891920][ T31] ? nmi_trigger_cpumask_backtrace+0x200/0x230 [ 250.898059][ T31] ? watchdog.cold+0x198/0x1ca [ 250.902795][ T31] ? watchdog+0xd35/0x1050 [ 250.907185][ T31] watchdog.cold+0x1a9/0x1ca [ 250.911752][ T31] ? __pfx_watchdog+0x10/0x10 [ 250.916403][ T31] ? __kthread_parkme+0x18c/0x230 [ 250.921402][ T31] ? kthread+0x13a/0x450 [ 250.925634][ T31] ? __pfx_watchdog+0x10/0x10 [ 250.930302][ T31] kthread+0x370/0x450 [ 250.934353][ T31] ? __pfx_kthread+0x10/0x10 [ 250.938947][ T31] ret_from_fork+0x754/0xd80 [ 250.943512][ T31] ? __pfx_ret_from_fork+0x10/0x10 [ 250.948593][ T31] ? __switch_to+0x7b4/0x1120 [ 250.953244][ T31] ? __pfx_kthread+0x10/0x10 [ 250.957811][ T31] ret_from_fork_asm+0x1a/0x30 [ 250.962566][ T31] [ 250.966003][ T31] Kernel Offset: disabled [ 250.970327][ T31] Rebooting in 86400 seconds..