25-Aug-2026 12:52:10: building syzkaller on d6526ea3e6ad9081c902859bbb80f9f840377cb4... 25-Aug-2026 12:52:39: fetching kernel... 25-Aug-2026 12:52:42: checked out kernel commit 4b18edbd8e70f7e6860d56370f13244896d0f95c ("Add linux-next specific files for 20260824", 2026-08-24 14:02:22 +0100 +0100) 25-Aug-2026 12:52:42: cleaning kernel... 25-Aug-2026 12:52:45: building kernel... 25-Aug-2026 13:06:23: kernel built successfully with compiler Debian clang version 22.1.8 (++20260613092233+e80beda6e255-1~exp1~20260613092250.77), Debian LLD 22.1.8 25-Aug-2026 13:06:23: testing patch... 25-Aug-2026 13:11:29: aggregating test results failed: SYZFAIL: failed to recv rpc SYZFAIL: failed to recv rpc fd=3 want=4 recv=0 n=0 (errno 9: Bad file descriptor) syzkaller login: [ 111.335884][ T44] cfg80211: failed to load regulatory.db Warning: Permanently added '10.128.1.77' (ED25519) to the list of known hosts. 2026/08/25 13:10:24 parsed 1 programs [ 120.994233][ T5635] cgroup: Unknown subsys name 'net' [ 121.086239][ T5635] cgroup: Unknown subsys name 'cpuset' [ 121.095629][ T5635] cgroup: Unknown subsys name 'rlimit' Setting up swapspace version 1, size = 127995904 bytes [ 122.781207][ T5635] Adding 124996k swap on ./swap-file. Priority:0 extents:1 across:124996k [ 126.520947][ T5648] soft_limit_in_bytes is deprecated and will be removed. Writing any value to this file has no effect. Please report your usecase to linux-mm@kvack.org if you depend on this functionality. [ 128.116288][ T5683] Bluetooth: hci0: unexpected cc 0x0c03 length: 249 > 1 [ 128.125633][ T5683] Bluetooth: hci0: unexpected cc 0x1003 length: 249 > 9 [ 128.126820][ T5683] Bluetooth: hci0: unexpected cc 0x1001 length: 249 > 9 [ 128.146168][ T5683] Bluetooth: hci0: unexpected cc 0x0c23 length: 249 > 4 [ 128.154687][ T5683] Bluetooth: hci0: unexpected cc 0x0c38 length: 249 > 2 [ 129.616507][ T50] wlan0: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 129.630549][ T50] wlan0: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 129.930339][ T12] wlan1: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 129.930383][ T12] wlan1: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 131.064709][ T5709] bridge0: port 1(bridge_slave_0) entered blocking state [ 131.065677][ T5709] bridge0: port 1(bridge_slave_0) entered disabled state [ 131.067024][ T5709] bridge_slave_0: entered allmulticast mode [ 131.074503][ T5709] bridge_slave_0: entered promiscuous mode [ 131.094364][ T5709] bridge0: port 2(bridge_slave_1) entered blocking state [ 131.094642][ T5709] bridge0: port 2(bridge_slave_1) entered disabled state [ 131.095115][ T5709] bridge_slave_1: entered allmulticast mode [ 131.100332][ T5709] bridge_slave_1: entered promiscuous mode [ 131.168545][ T5709] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 131.185213][ T5709] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 131.240313][ T5709] team0: Port device team_slave_0 added [ 131.254276][ T5709] team0: Port device team_slave_1 added [ 131.310141][ T5709] batman_adv: batadv0: Adding interface: batadv_slave_0 [ 131.310194][ T5709] 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. [ 131.315020][ T5709] batman_adv: batadv0: Not using interface batadv_slave_0 (retrying later): interface not active [ 131.334888][ T5709] batman_adv: batadv0: Adding interface: batadv_slave_1 [ 131.334951][ T5709] 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. [ 131.335036][ T5709] batman_adv: batadv0: Not using interface batadv_slave_1 (retrying later): interface not active [ 131.517264][ T5709] hsr_slave_0: entered promiscuous mode [ 131.524668][ T5709] hsr_slave_1: entered promiscuous mode [ 131.764931][ T5709] netdevsim netdevsim0 netdevsim0: renamed from eth0 [ 131.778256][ T5709] 8021q: adding VLAN 0 to HW filter on device netdevsim0 [ 131.786058][ T5709] netdevsim netdevsim0 netdevsim1: renamed from eth1 [ 131.797966][ T5709] 8021q: adding VLAN 0 to HW filter on device netdevsim1 [ 131.806704][ T5709] netdevsim netdevsim0 netdevsim2: renamed from eth2 [ 131.823175][ T5709] 8021q: adding VLAN 0 to HW filter on device netdevsim2 [ 131.830462][ T5709] netdevsim netdevsim0 netdevsim3: renamed from eth3 [ 131.844856][ T5709] 8021q: adding VLAN 0 to HW filter on device netdevsim3 [ 131.938991][ T5709] 8021q: adding VLAN 0 to HW filter on device bond0 [ 131.968059][ T5709] 8021q: adding VLAN 0 to HW filter on device team0 [ 131.985228][ T30] bridge0: port 1(bridge_slave_0) entered blocking state [ 131.985648][ T30] bridge0: port 1(bridge_slave_0) entered forwarding state [ 132.017419][ T30] bridge0: port 2(bridge_slave_1) entered blocking state [ 132.017675][ T30] bridge0: port 2(bridge_slave_1) entered forwarding state [ 132.452305][ T5709] 8021q: adding VLAN 0 to HW filter on device batadv0 [ 132.516766][ T5709] veth0_vlan: entered promiscuous mode [ 132.530915][ T5709] veth1_vlan: entered promiscuous mode [ 132.567339][ T5709] veth0_macvtap: entered promiscuous mode [ 132.577151][ T5709] veth1_macvtap: entered promiscuous mode [ 132.598875][ T5709] batman_adv: batadv0: Interface activated: batadv_slave_0 [ 132.616197][ T5709] batman_adv: batadv0: Interface activated: batadv_slave_1 [ 132.684530][ T1014] netdevsim netdevsim0 netdevsim0: set [1, 0] type 2 family 0 port 6081 - 0 [ 132.684618][ T1014] netdevsim netdevsim0 netdevsim1: set [1, 0] type 2 family 0 port 6081 - 0 [ 132.684680][ T1014] netdevsim netdevsim0 netdevsim2: set [1, 0] type 2 family 0 port 6081 - 0 [ 132.684724][ T1014] netdevsim netdevsim0 netdevsim3: set [1, 0] type 2 family 0 port 6081 - 0 2026/08/25 13:10:41 executed programs: 0 [ 132.892006][ T5683] Bluetooth: hci0: unexpected cc 0x0c03 length: 249 > 1 [ 132.901231][ T89] netdevsim netdevsim0 netdevsim3 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 132.904188][ T5683] Bluetooth: hci0: unexpected cc 0x1003 length: 249 > 9 [ 132.922449][ T5683] Bluetooth: hci0: unexpected cc 0x1001 length: 249 > 9 [ 132.934087][ T5683] Bluetooth: hci0: unexpected cc 0x0c23 length: 249 > 4 [ 132.935106][ T5683] Bluetooth: hci0: unexpected cc 0x0c38 length: 249 > 2 [ 133.025054][ T89] netdevsim netdevsim0 netdevsim2 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 133.144457][ T89] netdevsim netdevsim0 netdevsim1 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 133.246771][ T89] netdevsim netdevsim0 netdevsim0 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 133.677015][ T5756] bridge0: port 1(bridge_slave_0) entered blocking state [ 133.677633][ T5756] bridge0: port 1(bridge_slave_0) entered disabled state [ 133.685966][ T5756] bridge_slave_0: entered allmulticast mode [ 133.695237][ T5756] bridge_slave_0: entered promiscuous mode [ 133.710284][ T5756] bridge0: port 2(bridge_slave_1) entered blocking state [ 133.710409][ T5756] bridge0: port 2(bridge_slave_1) entered disabled state [ 133.721049][ T5756] bridge_slave_1: entered allmulticast mode [ 133.727508][ T5756] bridge_slave_1: entered promiscuous mode [ 133.783360][ T5756] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 133.797064][ T5756] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 133.857433][ T5756] team0: Port device team_slave_0 added [ 133.868098][ T5756] team0: Port device team_slave_1 added [ 133.907793][ T5756] batman_adv: batadv0: Adding interface: batadv_slave_0 [ 133.907844][ T5756] 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. [ 133.907876][ T5756] batman_adv: batadv0: Not using interface batadv_slave_0 (retrying later): interface not active [ 133.923935][ T5756] batman_adv: batadv0: Adding interface: batadv_slave_1 [ 133.923988][ T5756] 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. [ 133.924077][ T5756] batman_adv: batadv0: Not using interface batadv_slave_1 (retrying later): interface not active [ 134.048144][ T5756] hsr_slave_0: entered promiscuous mode [ 134.051969][ T5756] hsr_slave_1: entered promiscuous mode [ 134.054281][ T5756] debugfs: 'hsr0' already exists in 'hsr' [ 134.054422][ T5756] Cannot create hsr debugfs directory [ 135.012202][ T4935] Bluetooth: hci0: command tx timeout [ 135.733256][ T89] bridge_slave_1: left allmulticast mode [ 135.733339][ T89] bridge_slave_1: left promiscuous mode [ 135.740355][ T89] bridge0: port 2(bridge_slave_1) entered disabled state [ 135.765109][ T89] bridge_slave_0: left allmulticast mode [ 135.765170][ T89] bridge_slave_0: left promiscuous mode [ 135.775971][ T89] bridge0: port 1(bridge_slave_0) entered disabled state [ 135.941794][ T89] bond0 (unregistering): (slave bond_slave_0): Releasing backup interface [ 135.956156][ T89] bond0 (unregistering): (slave bond_slave_1): Releasing backup interface [ 135.968679][ T89] bond0 (unregistering): Released all slaves [ 136.086507][ T89] hsr_slave_0: left promiscuous mode [ 136.094871][ T89] hsr_slave_1: left promiscuous mode [ 136.102058][ T89] batman_adv: batadv0: Interface deactivated: batadv_slave_0 [ 136.102138][ T89] batman_adv: batadv0: Removing interface: batadv_slave_0 [ 136.132322][ T89] batman_adv: batadv0: Interface deactivated: batadv_slave_1 [ 136.143861][ T89] batman_adv: batadv0: Removing interface: batadv_slave_1 [ 136.165465][ T89] veth1_macvtap: left promiscuous mode [ 136.172263][ T89] veth0_macvtap: left promiscuous mode [ 136.178301][ T89] veth1_vlan: left promiscuous mode [ 136.178426][ T89] veth0_vlan: left promiscuous mode [ 136.594585][ T89] team0 (unregistering): Port device team_slave_1 removed [ 136.620103][ T89] team0 (unregistering): Port device team_slave_0 removed [ 136.868505][ T5280] 8021q: adding VLAN 0 to HW filter on device eth1 [ 137.097653][ T4935] Bluetooth: hci0: command tx timeout [ 137.316382][ T5756] netdevsim netdevsim0 netdevsim0: renamed from eth0 [ 137.333292][ T5756] 8021q: adding VLAN 0 to HW filter on device netdevsim0 [ 137.343067][ T5756] netdevsim netdevsim0 netdevsim1: renamed from eth1 [ 137.365933][ T5756] 8021q: adding VLAN 0 to HW filter on device netdevsim1 [ 137.382861][ T5756] netdevsim netdevsim0 netdevsim2: renamed from eth2 [ 137.406036][ T5756] 8021q: adding VLAN 0 to HW filter on device netdevsim2 [ 137.410629][ T5756] netdevsim netdevsim0 netdevsim3: renamed from eth3 [ 137.430942][ T5756] 8021q: adding VLAN 0 to HW filter on device netdevsim3 [ 137.572772][ T5756] 8021q: adding VLAN 0 to HW filter on device bond0 [ 137.602856][ T5756] 8021q: adding VLAN 0 to HW filter on device team0 [ 137.620498][ T1014] bridge0: port 1(bridge_slave_0) entered blocking state [ 137.622240][ T1014] bridge0: port 1(bridge_slave_0) entered forwarding state [ 137.656045][ T12] bridge0: port 2(bridge_slave_1) entered blocking state [ 137.656577][ T12] bridge0: port 2(bridge_slave_1) entered forwarding state [ 138.350420][ T5756] 8021q: adding VLAN 0 to HW filter on device batadv0 [ 138.436115][ T5756] veth0_vlan: entered promiscuous mode [ 138.455410][ T5756] veth1_vlan: entered promiscuous mode [ 138.509777][ T5756] veth0_macvtap: entered promiscuous mode [ 138.521590][ T5756] veth1_macvtap: entered promiscuous mode [ 138.556218][ T5756] batman_adv: batadv0: Interface activated: batadv_slave_0 [ 138.576368][ T5756] batman_adv: batadv0: Interface activated: batadv_slave_1 [ 138.692805][ T89] netdevsim netdevsim0 netdevsim3: set [1, 0] type 2 family 0 port 6081 - 0 [ 138.712216][ T89] netdevsim netdevsim0 netdevsim0: set [1, 0] type 2 family 0 port 6081 - 0 [ 138.712292][ T89] netdevsim netdevsim0 netdevsim1: set [1, 0] type 2 family 0 port 6081 - 0 [ 138.712352][ T89] netdevsim netdevsim0 netdevsim2: set [1, 0] type 2 family 0 port 6081 - 0 [ 138.795801][ T30] wlan0: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 138.795863][ T30] wlan0: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 138.870602][ T30] wlan1: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 138.872081][ T30] wlan1: Creating new IBSS network, BSSID 50:50:50:50:50:50 SYZFAIL: failed to recv rpc fd=3 want=4 recv=0 n=0 (errno 9: Bad file descriptor)