Warning: Permanently added '10.128.1.186' (ED25519) to the list of known hosts. 2026/04/13 21:10:47 ignoring optional flag "type"="gce" 2026/04/13 21:10:47 parsed 1 programs [ 74.375664][ T30] kauditd_printk_skb: 24 callbacks suppressed [ 74.375680][ T30] audit: type=1400 audit(1776114647.704:96): avc: denied { unlink } for pid=5990 comm="syz-executor" name="swap-file" dev="sda1" ino=2026 scontext=root:sysadm_r:sysadm_t tcontext=system_u:object_r:unlabeled_t tclass=file permissive=1 trawcon="root:object_r:swapfile_t" 2026/04/13 21:10:48 executed programs: 0 [ 75.590167][ T5990] Adding 124996k swap on ./swap-file. Priority:0 extents:1 across:124996k [ 75.634914][ T5813] Bluetooth: hci0: unexpected cc 0x0c03 length: 249 > 1 [ 75.644577][ T5813] Bluetooth: hci0: unexpected cc 0x1003 length: 249 > 9 [ 75.652232][ T5813] Bluetooth: hci0: unexpected cc 0x1001 length: 249 > 9 [ 75.660533][ T5813] Bluetooth: hci0: unexpected cc 0x0c23 length: 249 > 4 [ 75.668392][ T5813] Bluetooth: hci0: unexpected cc 0x0c38 length: 249 > 2 [ 75.760535][ T5996] chnl_net:caif_netlink_parms(): no params data found [ 75.806944][ T5996] bridge0: port 1(bridge_slave_0) entered blocking state [ 75.814086][ T5996] bridge0: port 1(bridge_slave_0) entered disabled state [ 75.821157][ T5996] bridge_slave_0: entered allmulticast mode [ 75.827931][ T5996] bridge_slave_0: entered promiscuous mode [ 75.835214][ T5996] bridge0: port 2(bridge_slave_1) entered blocking state [ 75.842282][ T5996] bridge0: port 2(bridge_slave_1) entered disabled state [ 75.849957][ T5996] bridge_slave_1: entered allmulticast mode [ 75.856677][ T5996] bridge_slave_1: entered promiscuous mode [ 75.877104][ T5996] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 75.888063][ T5996] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 75.910725][ T5996] team0: Port device team_slave_0 added [ 75.917848][ T5996] team0: Port device team_slave_1 added [ 75.943371][ T5996] batman_adv: batadv0: Adding interface: batadv_slave_0 [ 75.950443][ T5996] 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. [ 75.978396][ T5996] batman_adv: batadv0: Not using interface batadv_slave_0 (retrying later): interface not active [ 75.990953][ T5996] batman_adv: batadv0: Adding interface: batadv_slave_1 [ 75.998145][ T5996] 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. [ 76.035038][ T9] cfg80211: failed to load regulatory.db [ 76.041208][ T5996] batman_adv: batadv0: Not using interface batadv_slave_1 (retrying later): interface not active [ 76.111639][ T5996] hsr_slave_0: entered promiscuous mode [ 76.124641][ T5996] hsr_slave_1: entered promiscuous mode [ 76.628286][ T5996] netdevsim netdevsim0 netdevsim0: renamed from eth0 [ 76.640007][ T5996] netdevsim netdevsim0 netdevsim1: renamed from eth1 [ 76.650948][ T5996] netdevsim netdevsim0 netdevsim2: renamed from eth2 [ 76.661216][ T5996] netdevsim netdevsim0 netdevsim3: renamed from eth3 [ 76.707029][ T5996] bridge0: port 2(bridge_slave_1) entered blocking state [ 76.714165][ T5996] bridge0: port 2(bridge_slave_1) entered forwarding state [ 76.721552][ T5996] bridge0: port 1(bridge_slave_0) entered blocking state [ 76.728708][ T5996] bridge0: port 1(bridge_slave_0) entered forwarding state [ 76.738945][ T94] bridge0: port 1(bridge_slave_0) entered disabled state [ 76.746828][ T94] bridge0: port 2(bridge_slave_1) entered disabled state [ 76.801593][ T5996] 8021q: adding VLAN 0 to HW filter on device bond0 [ 76.823692][ T5996] 8021q: adding VLAN 0 to HW filter on device team0 [ 76.843347][ T617] bridge0: port 1(bridge_slave_0) entered blocking state [ 76.850527][ T617] bridge0: port 1(bridge_slave_0) entered forwarding state [ 76.865289][ T94] bridge0: port 2(bridge_slave_1) entered blocking state [ 76.872351][ T94] bridge0: port 2(bridge_slave_1) entered forwarding state [ 76.916172][ T5996] hsr0: Slave B (hsr_slave_1) is not up; please bring it up to get a fully working HSR network [ 77.072535][ T5996] 8021q: adding VLAN 0 to HW filter on device batadv0 [ 77.113129][ T5996] veth0_vlan: entered promiscuous mode [ 77.128083][ T5996] veth1_vlan: entered promiscuous mode [ 77.155483][ T5996] veth0_macvtap: entered promiscuous mode [ 77.167850][ T5996] veth1_macvtap: entered promiscuous mode [ 77.187006][ T5996] batman_adv: batadv0: Interface activated: batadv_slave_0 [ 77.197661][ T5996] batman_adv: batadv0: Interface activated: batadv_slave_1 [ 77.210023][ T73] netdevsim netdevsim0 netdevsim0: set [1, 0] type 2 family 0 port 6081 - 0 [ 77.223592][ T73] netdevsim netdevsim0 netdevsim1: set [1, 0] type 2 family 0 port 6081 - 0 [ 77.236501][ T73] netdevsim netdevsim0 netdevsim2: set [1, 0] type 2 family 0 port 6081 - 0 [ 77.251272][ T73] netdevsim netdevsim0 netdevsim3: set [1, 0] type 2 family 0 port 6081 - 0 [ 77.468281][ T6069] nbd0: detected capacity change from 0 to 65538 [ 77.707034][ T5813] Bluetooth: hci0: command tx timeout [ 78.170649][ T6061] block nbd0: shutting down sockets [ 78.185916][ C1] I/O error, dev nbd0, sector 0 op 0x0:(READ) flags 0x800000 phys_seg 1 prio class 2 [ 78.195590][ C1] Buffer I/O error on dev nbd0, logical block 0, async page read [ 78.203602][ T6006] I/O error, dev nbd0, sector 0 op 0x0:(READ) flags 0x800000 phys_seg 1 prio class 2 [ 78.215365][ T6006] Buffer I/O error on dev nbd0, logical block 0, async page read [ 78.223283][ T6006] I/O error, dev nbd0, sector 0 op 0x0:(READ) flags 0x800000 phys_seg 1 prio class 2 [ 78.233835][ T6006] Buffer I/O error on dev nbd0, logical block 0, async page read [ 78.241718][ T6006] I/O error, dev nbd0, sector 0 op 0x0:(READ) flags 0x800000 phys_seg 1 prio class 2 [ 78.252670][ T6006] Buffer I/O error on dev nbd0, logical block 0, async page read [ 78.264301][ T6006] I/O error, dev nbd0, sector 0 op 0x0:(READ) flags 0x800000 phys_seg 1 prio class 2 [ 78.274059][ T6006] Buffer I/O error on dev nbd0, logical block 0, async page read [ 78.281935][ T6006] I/O error, dev nbd0, sector 0 op 0x0:(READ) flags 0x800000 phys_seg 1 prio class 2 [ 78.291755][ T6006] Buffer I/O error on dev nbd0, logical block 0, async page read [ 78.300355][ T6006] I/O error, dev nbd0, sector 0 op 0x0:(READ) flags 0x800000 phys_seg 1 prio class 2 [ 78.310102][ T6006] Buffer I/O error on dev nbd0, logical block 0, async page read [ 78.318279][ T6006] I/O error, dev nbd0, sector 0 op 0x0:(READ) flags 0x800000 phys_seg 1 prio class 2 [ 78.328028][ T6006] Buffer I/O error on dev nbd0, logical block 0, async page read [ 78.338412][ T6006] ldm_validate_partition_table(): Disk read failed. [ 78.345487][ T6006] I/O error, dev nbd0, sector 0 op 0x0:(READ) flags 0x800000 phys_seg 1 prio class 2 [ 78.356037][ T6006] Buffer I/O error on dev nbd0, logical block 0, async page read [ 78.364295][ T6006] I/O error, dev nbd0, sector 0 op 0x0:(READ) flags 0x800000 phys_seg 1 prio class 2 [ 78.374028][ T6006] Buffer I/O error on dev nbd0, logical block 0, async page read [ 78.381935][ T6006] Dev nbd0: unable to read RDB block 0 [ 78.387954][ T6006] nbd0: unable to read partition table [ 78.409827][ T6006] ldm_validate_partition_table(): Disk read failed. [ 78.417241][ T6006] Dev nbd0: unable to read RDB block 0 [ 78.427514][ T6006] nbd0: unable to read partition table [ 78.450632][ T6125] ldm_validate_partition_table(): Disk read failed. [ 78.458652][ T6125] Dev nbd0: unable to read RDB block 0 [ 78.467946][ T6125] nbd0: unable to read partition table [ 78.531052][ T6006] ldm_validate_partition_table(): Disk read failed. [ 78.540864][ T6006] Dev nbd0: unable to read RDB block 0 [ 78.546537][ T6006] nbd0: unable to read partition table [ 78.554706][ T6006] ldm_validate_partition_table(): Disk read failed. [ 78.561403][ T6006] Dev nbd0: unable to read RDB block 0 [ 78.567444][ T6006] nbd0: unable to read partition table [ 78.735812][ T6143] nbd0: detected capacity change from 0 to 65538 [ 79.452411][ T51] block nbd0: Receive control failed (result -104) [ 79.773839][ T51] Bluetooth: hci0: command tx timeout [ 81.853982][ T51] Bluetooth: hci0: command tx timeout [ 83.933919][ T51] Bluetooth: hci0: command tx timeout [ 109.294845][ T2721] block nbd0: Possible stuck request ffff888027628800: control (read@0,4096B). Runtime 30 seconds [ 127.215737][ T1294] ieee802154 phy0 wpan0: encryption failed: -22 [ 127.222045][ T1294] ieee802154 phy1 wpan1: encryption failed: -22 2026/04/13 21:11:46 executed programs: 3 [ 134.630658][ T5813] Bluetooth: hci1: unexpected cc 0x0c03 length: 249 > 1 [ 134.639101][ T5813] Bluetooth: hci1: unexpected cc 0x1003 length: 249 > 9 [ 134.646612][ T5813] Bluetooth: hci1: unexpected cc 0x1001 length: 249 > 9 [ 134.654834][ T5813] Bluetooth: hci1: unexpected cc 0x0c23 length: 249 > 4 [ 134.662340][ T5813] Bluetooth: hci1: unexpected cc 0x0c38 length: 249 > 2 [ 134.766459][ T6203] chnl_net:caif_netlink_parms(): no params data found [ 134.810240][ T6203] bridge0: port 1(bridge_slave_0) entered blocking state [ 134.817497][ T6203] bridge0: port 1(bridge_slave_0) entered disabled state [ 134.827056][ T6203] bridge_slave_0: entered allmulticast mode [ 134.834656][ T6203] bridge_slave_0: entered promiscuous mode [ 134.841719][ T6203] bridge0: port 2(bridge_slave_1) entered blocking state [ 134.848917][ T6203] bridge0: port 2(bridge_slave_1) entered disabled state [ 134.856132][ T6203] bridge_slave_1: entered allmulticast mode [ 134.862734][ T6203] bridge_slave_1: entered promiscuous mode [ 134.883160][ T6203] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 134.895443][ T6203] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 134.917826][ T6203] team0: Port device team_slave_0 added [ 134.924909][ T6203] team0: Port device team_slave_1 added [ 134.945285][ T6203] batman_adv: batadv0: Adding interface: batadv_slave_0 [ 134.952238][ T6203] 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. [ 134.978250][ T6203] batman_adv: batadv0: Not using interface batadv_slave_0 (retrying later): interface not active [ 134.989642][ T6203] batman_adv: batadv0: Adding interface: batadv_slave_1 [ 134.996598][ T6203] 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. [ 135.022557][ T6203] batman_adv: batadv0: Not using interface batadv_slave_1 (retrying later): interface not active [ 135.052374][ T6203] hsr_slave_0: entered promiscuous mode [ 135.058701][ T6203] hsr_slave_1: entered promiscuous mode [ 135.064727][ T6203] debugfs: 'hsr0' already exists in 'hsr' [ 135.070487][ T6203] Cannot create hsr debugfs directory [ 135.134698][ T6203] netdevsim netdevsim0 netdevsim3 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 135.162185][ T6203] netdevsim netdevsim0 netdevsim2 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 135.260562][ T6203] netdevsim netdevsim0 netdevsim1 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 135.303290][ T6203] netdevsim netdevsim0 netdevsim0 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 135.422320][ T6203] netdevsim netdevsim0 netdevsim0: renamed from eth0 [ 135.431202][ T6203] netdevsim netdevsim0 netdevsim1: renamed from eth1 [ 135.444328][ T6203] netdevsim netdevsim0 netdevsim2: renamed from eth2 [ 135.453192][ T6203] netdevsim netdevsim0 netdevsim3: renamed from eth3 [ 135.471186][ T6203] bridge0: port 2(bridge_slave_1) entered blocking state [ 135.478277][ T6203] bridge0: port 2(bridge_slave_1) entered forwarding state [ 135.485691][ T6203] bridge0: port 1(bridge_slave_0) entered blocking state [ 135.492746][ T6203] bridge0: port 1(bridge_slave_0) entered forwarding state [ 135.528000][ T6203] 8021q: adding VLAN 0 to HW filter on device bond0 [ 135.542121][ T617] bridge0: port 1(bridge_slave_0) entered disabled state [ 135.549763][ T617] bridge0: port 2(bridge_slave_1) entered disabled state [ 135.561519][ T6203] 8021q: adding VLAN 0 to HW filter on device team0 [ 135.571887][ T94] bridge0: port 1(bridge_slave_0) entered blocking state [ 135.579009][ T94] bridge0: port 1(bridge_slave_0) entered forwarding state [ 135.590196][ T73] bridge0: port 2(bridge_slave_1) entered blocking state [ 135.597306][ T73] bridge0: port 2(bridge_slave_1) entered forwarding state [ 135.711051][ T6203] 8021q: adding VLAN 0 to HW filter on device batadv0 [ 135.740089][ T6203] veth0_vlan: entered promiscuous mode [ 135.750239][ T6203] veth1_vlan: entered promiscuous mode [ 135.769589][ T6203] veth0_macvtap: entered promiscuous mode [ 135.777501][ T6203] veth1_macvtap: entered promiscuous mode [ 135.790941][ T6203] batman_adv: batadv0: Interface activated: batadv_slave_0 [ 135.802674][ T6203] batman_adv: batadv0: Interface activated: batadv_slave_1 [ 135.815366][ T12] netdevsim netdevsim0 netdevsim0: set [1, 0] type 2 family 0 port 6081 - 0 [ 135.825389][ T12] netdevsim netdevsim0 netdevsim1: set [1, 0] type 2 family 0 port 6081 - 0 [ 135.835427][ T12] netdevsim netdevsim0 netdevsim2: set [1, 0] type 2 family 0 port 6081 - 0 [ 135.845226][ T12] netdevsim netdevsim0 netdevsim3: set [1, 0] type 2 family 0 port 6081 - 0 [ 136.733990][ T51] Bluetooth: hci1: command tx timeout [ 138.813847][ T51] Bluetooth: hci1: command tx timeout [ 138.894857][ T5177] udevd[5177]: worker [6006] /devices/virtual/block/nbd0 is taking a long time [ 139.374781][ T2721] block nbd0: Possible stuck request ffff888027628800: control (read@0,4096B). Runtime 60 seconds [ 140.894210][ T51] Bluetooth: hci1: command tx timeout [ 142.984229][ T51] Bluetooth: hci1: command tx timeout [ 169.464212][ T2721] block nbd0: Possible stuck request ffff888027628800: control (read@0,4096B). Runtime 90 seconds [ 188.656766][ T1294] ieee802154 phy0 wpan0: encryption failed: -22 [ 188.663065][ T1294] ieee802154 phy1 wpan1: encryption failed: -22 2026/04/13 21:12:44 executed programs: 4 [ 191.915360][ T5813] Bluetooth: hci2: unexpected cc 0x0c03 length: 249 > 1 [ 191.922831][ T5813] Bluetooth: hci2: unexpected cc 0x1003 length: 249 > 9 [ 191.930751][ T5813] Bluetooth: hci2: unexpected cc 0x1001 length: 249 > 9 [ 191.938754][ T5813] Bluetooth: hci2: unexpected cc 0x0c23 length: 249 > 4 [ 191.946116][ T5813] Bluetooth: hci2: unexpected cc 0x0c38 length: 249 > 2 [ 192.046560][ T6232] chnl_net:caif_netlink_parms(): no params data found [ 192.091667][ T6232] bridge0: port 1(bridge_slave_0) entered blocking state [ 192.098855][ T6232] bridge0: port 1(bridge_slave_0) entered disabled state [ 192.106073][ T6232] bridge_slave_0: entered allmulticast mode [ 192.112829][ T6232] bridge_slave_0: entered promiscuous mode [ 192.120236][ T6232] bridge0: port 2(bridge_slave_1) entered blocking state [ 192.127568][ T6232] bridge0: port 2(bridge_slave_1) entered disabled state [ 192.136133][ T6232] bridge_slave_1: entered allmulticast mode [ 192.142719][ T6232] bridge_slave_1: entered promiscuous mode [ 192.163120][ T6232] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 192.174677][ T6232] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 192.197734][ T6232] team0: Port device team_slave_0 added [ 192.205102][ T6232] team0: Port device team_slave_1 added [ 192.223138][ T6232] batman_adv: batadv0: Adding interface: batadv_slave_0 [ 192.230906][ T6232] 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. [ 192.256898][ T6232] batman_adv: batadv0: Not using interface batadv_slave_0 (retrying later): interface not active [ 192.268981][ T6232] batman_adv: batadv0: Adding interface: batadv_slave_1 [ 192.276026][ T6232] 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. [ 192.301909][ T6232] batman_adv: batadv0: Not using interface batadv_slave_1 (retrying later): interface not active [ 192.331358][ T6232] hsr_slave_0: entered promiscuous mode [ 192.337565][ T6232] hsr_slave_1: entered promiscuous mode [ 192.343379][ T6232] debugfs: 'hsr0' already exists in 'hsr' [ 192.349124][ T6232] Cannot create hsr debugfs directory [ 192.413099][ T6232] netdevsim netdevsim0 netdevsim3 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 192.481898][ T6232] netdevsim netdevsim0 netdevsim2 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 192.570004][ T6232] netdevsim netdevsim0 netdevsim1 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 192.632286][ T6232] netdevsim netdevsim0 netdevsim0 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 192.748817][ T6232] netdevsim netdevsim0 netdevsim0: renamed from eth0 [ 192.757900][ T6232] netdevsim netdevsim0 netdevsim1: renamed from eth1 [ 192.766948][ T6232] netdevsim netdevsim0 netdevsim2: renamed from eth2 [ 192.775724][ T6232] netdevsim netdevsim0 netdevsim3: renamed from eth3 [ 192.793693][ T6232] bridge0: port 2(bridge_slave_1) entered blocking state [ 192.800793][ T6232] bridge0: port 2(bridge_slave_1) entered forwarding state [ 192.808227][ T6232] bridge0: port 1(bridge_slave_0) entered blocking state [ 192.815298][ T6232] bridge0: port 1(bridge_slave_0) entered forwarding state [ 192.850081][ T6232] 8021q: adding VLAN 0 to HW filter on device bond0 [ 192.865395][ T12] bridge0: port 1(bridge_slave_0) entered disabled state [ 192.872833][ T12] bridge0: port 2(bridge_slave_1) entered disabled state [ 192.884225][ T6232] 8021q: adding VLAN 0 to HW filter on device team0 [ 192.895240][ T94] bridge0: port 1(bridge_slave_0) entered blocking state [ 192.902317][ T94] bridge0: port 1(bridge_slave_0) entered forwarding state [ 192.913767][ T12] bridge0: port 2(bridge_slave_1) entered blocking state [ 192.920841][ T12] bridge0: port 2(bridge_slave_1) entered forwarding state [ 193.036573][ T6232] 8021q: adding VLAN 0 to HW filter on device batadv0 [ 193.062789][ T6232] veth0_vlan: entered promiscuous mode [ 193.072980][ T6232] veth1_vlan: entered promiscuous mode [ 193.092169][ T6232] veth0_macvtap: entered promiscuous mode [ 193.100460][ T6232] veth1_macvtap: entered promiscuous mode [ 193.113220][ T6232] batman_adv: batadv0: Interface activated: batadv_slave_0 [ 193.126069][ T6232] batman_adv: batadv0: Interface activated: batadv_slave_1 [ 193.137869][ T12] netdevsim netdevsim0 netdevsim0: set [1, 0] type 2 family 0 port 6081 - 0 [ 193.147458][ T12] netdevsim netdevsim0 netdevsim1: set [1, 0] type 2 family 0 port 6081 - 0 [ 193.157716][ T12] netdevsim netdevsim0 netdevsim2: set [1, 0] type 2 family 0 port 6081 - 0 [ 193.167295][ T12] netdevsim netdevsim0 netdevsim3: set [1, 0] type 2 family 0 port 6081 - 0 [ 194.014323][ T5813] Bluetooth: hci2: command tx timeout [ 196.093814][ T5813] Bluetooth: hci2: command tx timeout [ 198.174283][ T5813] Bluetooth: hci2: command tx timeout [ 199.563866][ T2721] block nbd0: Possible stuck request ffff888027628800: control (read@0,4096B). Runtime 120 seconds [ 200.253872][ T51] Bluetooth: hci2: command tx timeout [ 200.973893][ T51] Bluetooth: hci0: command 0x0406 tx timeout [ 229.624296][ T2721] block nbd0: Possible stuck request ffff888027628800: control (read@0,4096B). Runtime 150 seconds [ 237.294340][ T31] INFO: task syz-executor.0:6138 blocked for more than 143 seconds. [ 237.302326][ T31] Not tainted syzkaller #0 [ 237.308339][ T31] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. [ 237.317135][ T31] task:syz-executor.0 state:D stack:28792 pid:6138 tgid:6136 ppid:5996 task_flags:0x400140 flags:0x00080802 [ 237.329120][ T31] Call Trace: [ 237.332380][ T31] [ 237.335320][ T31] __schedule+0xfee/0x6120 [ 237.339753][ T31] ? __lock_acquire+0x4a5/0x2630 [ 237.344734][ T31] ? __pfx___schedule+0x10/0x10 [ 237.349580][ T31] ? find_held_lock+0x2b/0x80 [ 237.354276][ T31] ? schedule+0x2bf/0x390 [ 237.358606][ T31] schedule+0xdd/0x390 [ 237.362654][ T31] schedule_preempt_disabled+0x13/0x30 [ 237.368143][ T31] __mutex_lock+0xc9a/0x1b90 [ 237.372724][ T31] ? bdev_release+0x15a/0x6d0 [ 237.377514][ T31] ? __pfx___mutex_lock+0x10/0x10 [ 237.382546][ T31] ? find_held_lock+0x2b/0x80 [ 237.387641][ T31] ? do_raw_spin_unlock+0x145/0x1e0 [ 237.392834][ T31] ? bdev_release+0x15a/0x6d0 [ 237.398133][ T31] bdev_release+0x15a/0x6d0 [ 237.402634][ T31] ? __pfx_blkdev_release+0x10/0x10 [ 237.407872][ T31] blkdev_release+0x15/0x20 [ 237.412375][ T31] __fput+0x3ff/0xb40 [ 237.416381][ T31] task_work_run+0x150/0x240 [ 237.420975][ T31] ? __pfx_task_work_run+0x10/0x10 [ 237.426176][ T31] ? selinux_file_ioctl+0xb4/0x290 [ 237.431314][ T31] exit_to_user_mode_loop+0x100/0x4a0 [ 237.436693][ T31] do_syscall_64+0x67c/0xf80 [ 237.441281][ T31] ? clear_bhb_loop+0x40/0x90 [ 237.446035][ T31] entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 237.451946][ T31] RIP: 0033:0x7fca1e46d0f9 [ 237.456433][ T31] RSP: 002b:00007fca1f14a078 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 [ 237.464939][ T31] RAX: 0000000000000000 RBX: 00007fca1e5abf80 RCX: 00007fca1e46d0f9 [ 237.473356][ T31] RDX: 0000000000000000 RSI: 000000000000ab03 RDI: 0000000000000003 [ 237.481406][ T31] RBP: 00007fca1e4ce498 R08: 0000000000000000 R09: 0000000000000000 [ 237.489409][ T31] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 [ 237.497429][ T31] R13: 000000000000000b R14: 00007fca1e5abf80 R15: 00007ffec1453798 [ 237.505479][ T31] [ 237.508521][ T31] [ 237.508521][ T31] Showing all locks held in the system: [ 237.516295][ T31] 6 locks held by kworker/u8:0/12: [ 237.521398][ T31] 1 lock held by khungtaskd/31: [ 237.526273][ T31] #0: ffffffff8e7e77a0 (rcu_read_lock){....}-{1:3}, at: debug_show_all_locks+0x3d/0x184 [ 237.536205][ T31] 2 locks held by getty/5564: [ 237.540859][ T31] #0: ffff8880335b50a0 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x24/0x80 [ 237.550620][ T31] #1: ffffc9000332b2f0 (&ldata->atomic_read_lock){+.+.}-{4:4}, at: n_tty_read+0x419/0x1500 [ 237.560730][ T31] 1 lock held by udevd/6006: [ 237.565334][ T31] #0: ffff888027592358 (&disk->open_mutex){+.+.}-{4:4}, at: bdev_open+0x41a/0xe40 [ 237.574748][ T31] 1 lock held by syz-executor.0/6138: [ 237.580092][ T31] #0: ffff888027592358 (&disk->open_mutex){+.+.}-{4:4}, at: bdev_release+0x15a/0x6d0 [ 237.589679][ T31] 1 lock held by syz-executor.0/6223: [ 237.595062][ T31] #0: ffff888027592358 (&disk->open_mutex){+.+.}-{4:4}, at: bdev_open+0x41a/0xe40 [ 237.604419][ T31] 1 lock held by syz-executor.0/6251: [ 237.609783][ T31] #0: ffff888027592358 (&disk->open_mutex){+.+.}-{4:4}, at: bdev_open+0x41a/0xe40 [ 237.619173][ T31] [ 237.621484][ T31] ============================================= [ 237.621484][ T31] [ 237.629906][ T31] NMI backtrace for cpu 0 [ 237.629918][ T31] CPU: 0 UID: 0 PID: 31 Comm: khungtaskd Not tainted syzkaller #0 PREEMPT(full) [ 237.629936][ T31] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/18/2026 [ 237.629945][ T31] Call Trace: [ 237.629951][ T31] [ 237.629961][ T31] dump_stack_lvl+0x100/0x190 [ 237.629994][ T31] nmi_cpu_backtrace.cold+0x12d/0x151 [ 237.630019][ T31] ? __pfx_nmi_raise_cpu_backtrace+0x10/0x10 [ 237.630038][ T31] nmi_trigger_cpumask_backtrace+0x1d7/0x230 [ 237.630065][ T31] sys_info+0x141/0x190 [ 237.630086][ T31] watchdog+0xd25/0x1050 [ 237.630118][ T31] ? __pfx_watchdog+0x10/0x10 [ 237.630143][ T31] ? __kthread_parkme+0x18c/0x230 [ 237.630171][ T31] ? kthread+0x13a/0x450 [ 237.630186][ T31] ? __pfx_watchdog+0x10/0x10 [ 237.630208][ T31] kthread+0x370/0x450 [ 237.630224][ T31] ? __pfx_kthread+0x10/0x10 [ 237.630242][ T31] ret_from_fork+0x754/0xd80 [ 237.630261][ T31] ? __pfx_ret_from_fork+0x10/0x10 [ 237.630280][ T31] ? __switch_to+0x7b4/0x1120 [ 237.630302][ T31] ? __pfx_kthread+0x10/0x10 [ 237.630320][ T31] ret_from_fork_asm+0x1a/0x30 [ 237.630352][ T31] [ 237.630358][ T31] Sending NMI from CPU 0 to CPUs 1: [ 237.749376][ C1] NMI backtrace for cpu 1 [ 237.749391][ C1] CPU: 1 UID: 0 PID: 0 Comm: swapper/1 Not tainted syzkaller #0 PREEMPT(full) [ 237.749407][ C1] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/18/2026 [ 237.749414][ C1] RIP: 0010:pv_native_safe_halt+0xf/0x20 [ 237.749433][ C1] Code: 28 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 23 c1 19 00 fb f4 fc 35 03 00 66 2e 0f 1f 84 00 00 00 00 00 66 90 90 90 90 90 90 [ 237.749445][ C1] RSP: 0018:ffffc90000197df0 EFLAGS: 00000246 [ 237.749457][ C1] RAX: 00000000000bd677 RBX: ffff88801e2da4c0 RCX: ffffffff8b91cc75 [ 237.749465][ C1] RDX: 0000000000000000 RSI: ffffffff8de7bd89 RDI: ffffffff8c1b23a0 [ 237.749474][ C1] RBP: 0000000000000000 R08: 0000000000000001 R09: ffffed10170a679d [ 237.749482][ C1] R10: ffff8880b8533ceb R11: 0000000000000000 R12: 0000000000000001 [ 237.749490][ C1] R13: ffffed1003c5b498 R14: 0000000000000001 R15: ffffffff90d9e210 [ 237.749499][ C1] FS: 0000000000000000(0000) GS:ffff888124435000(0000) knlGS:0000000000000000 [ 237.749512][ C1] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 237.749520][ C1] CR2: 000055cdd6038168 CR3: 000000000e598000 CR4: 00000000003526f0 [ 237.749529][ C1] Call Trace: [ 237.749533][ C1] [ 237.749538][ C1] default_idle+0x9/0x10 [ 237.749552][ C1] default_idle_call+0x6c/0xb0 [ 237.749567][ C1] do_idle+0x464/0x590 [ 237.749585][ C1] ? __pfx_do_idle+0x10/0x10 [ 237.749603][ C1] cpu_startup_entry+0x4f/0x60 [ 237.749619][ C1] start_secondary+0x21d/0x2d0 [ 237.749639][ C1] ? __pfx_start_secondary+0x10/0x10 [ 237.749659][ C1] common_startup_64+0x13e/0x148 [ 237.749679][ C1] [ 237.913887][ T31] Kernel panic - not syncing: hung_task: blocked tasks [ 237.920736][ T31] CPU: 1 UID: 0 PID: 31 Comm: khungtaskd Not tainted syzkaller #0 PREEMPT(full) [ 237.929842][ T31] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/18/2026 [ 237.939879][ T31] Call Trace: [ 237.943159][ T31] [ 237.946071][ T31] dump_stack_lvl+0x100/0x190 [ 237.950742][ T31] vpanic+0x552/0x970 [ 237.954708][ T31] ? __pfx_vpanic+0x10/0x10 [ 237.959190][ T31] ? rcu_is_watching+0x12/0xc0 [ 237.963939][ T31] panic+0xd1/0xe0 [ 237.967639][ T31] ? __pfx_panic+0x10/0x10 [ 237.972037][ T31] ? nmi_trigger_cpumask_backtrace+0x1b5/0x230 [ 237.978178][ T31] ? nmi_trigger_cpumask_backtrace+0x1f6/0x230 [ 237.984319][ T31] ? nmi_trigger_cpumask_backtrace+0x200/0x230 [ 237.990456][ T31] ? watchdog.cold+0x198/0x1ca [ 237.995218][ T31] ? watchdog+0xd35/0x1050 [ 237.999633][ T31] watchdog.cold+0x1a9/0x1ca [ 238.004212][ T31] ? __pfx_watchdog+0x10/0x10 [ 238.008875][ T31] ? __kthread_parkme+0x18c/0x230 [ 238.013904][ T31] ? kthread+0x13a/0x450 [ 238.018129][ T31] ? __pfx_watchdog+0x10/0x10 [ 238.022794][ T31] kthread+0x370/0x450 [ 238.026843][ T31] ? __pfx_kthread+0x10/0x10 [ 238.031425][ T31] ret_from_fork+0x754/0xd80 [ 238.035998][ T31] ? __pfx_ret_from_fork+0x10/0x10 [ 238.041091][ T31] ? __switch_to+0x7b4/0x1120 [ 238.045926][ T31] ? __pfx_kthread+0x10/0x10 [ 238.050498][ T31] ret_from_fork_asm+0x1a/0x30 [ 238.055253][ T31] [ 238.058602][ T31] Kernel Offset: disabled [ 238.062905][ T31] Rebooting in 86400 seconds..