syzkaller login: qemu-system-x86_64: ahci: PRDT length for NCQ command (0x0) is smaller than the requested size (0x20e000) [ 90.501754][ T1030] ata1.00: Read log 0x10 page 0x00 failed, Emask 0x1 [ 90.505193][ T1030] ata1: failed to read log page 10h (errno=-5) [ 90.507756][ T1030] ata1.00: exception Emask 0x1 SAct 0x1800 SErr 0x0 action 0x0 [ 90.522569][ T1030] ata1.00: irq_stat 0x41000000 [ 90.531207][ T1030] ata1.00: failed command: WRITE FPDMA QUEUED [ 90.538291][ T1030] ata1.00: cmd 61/70:58:36:c1:04/10:00:00:00:00/40 tag 11 ncq dma 2154496 ou [ 90.538291][ T1030] res 50/00:00:00:00:00/00:00:00:00:00/00 Emask 0x1 (device error) [ 90.556188][ T1030] ata1.00: status: { DRDY } [ 90.562088][ T1030] ata1.00: failed command: WRITE FPDMA QUEUED [ 90.571114][ T1030] ata1.00: cmd 61/d0:60:a6:d1:04/08:00:00:00:00/40 tag 12 ncq dma 1155072 ou [ 90.571114][ T1030] res 50/00:00:00:00:00/00:00:00:00:00/00 Emask 0x1 (device error) [ 90.590407][ T1030] ata1.00: status: { DRDY } [ 90.600272][ T1030] ata1.00: configured for UDMA/100 [ 90.607512][ T1030] ata1: EH complete qemu-system-x86_64: ahci: PRDT length for NCQ command (0x0) is smaller than the requested size (0x2b3000) [ 94.692866][ T1030] ata1.00: Read log 0x10 page 0x00 failed, Emask 0x1 [ 94.702045][ T1030] ata1: failed to read log page 10h (errno=-5) [ 94.714922][ T1030] ata1.00: NCQ disabled due to excessive errors [ 94.726880][ T1030] ata1.00: exception Emask 0x1 SAct 0x1800 SErr 0x0 action 0x0 [ 94.740141][ T1030] ata1.00: irq_stat 0x41000000 [ 94.746652][ T1030] ata1.00: failed command: WRITE FPDMA QUEUED [ 94.758704][ T1030] ata1.00: cmd 61/98:58:3e:49:05/15:00:00:00:00/40 tag 11 ncq dma 2830336 ou [ 94.758704][ T1030] res 50/00:00:00:00:00/00:00:00:00:00/00 Emask 0x1 (device error) [ 94.781022][ T1030] ata1.00: status: { DRDY } [ 94.783702][ T1030] ata1.00: failed command: WRITE FPDMA QUEUED [ 94.790392][ T1030] ata1.00: cmd 61/00:60:d6:5e:05/20:00:00:00:00/40 tag 12 ncq dma 4194304 ou [ 94.790392][ T1030] res 50/00:00:00:00:00/00:00:00:00:00/00 Emask 0x1 (device error) [ 94.809624][ T1030] ata1.00: status: { DRDY } [ 94.814354][ T1030] ata1.00: configured for UDMA/100 [ 94.821702][ T1030] ata1: EH complete Warning: Permanently added '[localhost]:41789' (ED25519) to the list of known hosts. [ 97.118271][ T9] cfg80211: failed to load regulatory.db 2026/06/26 09:51:03 parsed 1 programs 2026/06/26 09:51:03 serving rpc on tcp://44693 [ 100.670992][ T5292] cgroup: Unknown subsys name 'net' [ 100.745648][ T5292] cgroup: Unknown subsys name 'cpuset' [ 100.752777][ T5292] cgroup: Unknown subsys name 'rlimit' Setting up swapspace version 1, size = 127995904 bytes [ 102.413806][ T5292] Adding 124996k swap on ./swap-file. Priority:0 extents:1 across:124996k [ 110.287240][ T5314] soft_limit_in_bytes is deprecated and will be removed. Please report your usecase to linux-mm@kvack.org if you depend on this functionality. [ 113.027164][ T5352] Bluetooth: hci0: unexpected cc 0x0c03 length: 249 > 1 [ 113.038361][ T5352] Bluetooth: hci0: unexpected cc 0x1003 length: 249 > 9 [ 113.045202][ T5352] Bluetooth: hci0: unexpected cc 0x1001 length: 249 > 9 [ 113.051483][ T5352] Bluetooth: hci0: unexpected cc 0x0c23 length: 249 > 4 [ 113.058101][ T5352] Bluetooth: hci0: unexpected cc 0x0c38 length: 249 > 2 [ 115.110553][ T4649] Bluetooth: hci0: command tx timeout [ 116.505424][ T139] wlan0: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 116.539890][ T139] wlan0: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 117.131884][ T139] wlan1: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 117.171139][ T139] wlan1: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 120.302069][ T5347] syz-executor (5347) used greatest stack depth: 17952 bytes left [ 127.349901][ T5349] bridge0: port 1(bridge_slave_0) entered blocking state [ 127.370170][ T5349] bridge0: port 1(bridge_slave_0) entered disabled state [ 127.381738][ T5349] bridge_slave_0: entered allmulticast mode [ 127.401227][ T5349] bridge_slave_0: entered promiscuous mode [ 128.532705][ T5349] bridge0: port 2(bridge_slave_1) entered blocking state [ 128.539659][ T5349] bridge0: port 2(bridge_slave_1) entered disabled state [ 128.550055][ T5349] bridge_slave_1: entered allmulticast mode [ 128.563406][ T5349] bridge_slave_1: entered promiscuous mode [ 129.441827][ T5349] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 129.786031][ T5349] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 130.882337][ T5349] team0: Port device team_slave_0 added [ 130.916630][ T5349] team0: Port device team_slave_1 added [ 131.523375][ T5349] batman_adv: batadv0: Adding interface: batadv_slave_0 [ 131.533846][ T5349] 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. [ 131.576686][ T5349] batman_adv: batadv0: Not using interface batadv_slave_0 (retrying later): interface not active [ 131.614646][ T5349] batman_adv: batadv0: Adding interface: batadv_slave_1 [ 131.635922][ T5349] 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. [ 131.682346][ T5349] batman_adv: batadv0: Not using interface batadv_slave_1 (retrying later): interface not active [ 134.261697][ T5349] hsr_slave_0: entered promiscuous mode [ 134.274735][ T5349] hsr_slave_1: entered promiscuous mode [ 143.007467][ T5349] netdevsim netdevsim4 netdevsim0: renamed from eth0 [ 143.101104][ T5349] 8021q: adding VLAN 0 to HW filter on device netdevsim0 [ 143.128048][ T5349] netdevsim netdevsim4 netdevsim1: renamed from eth1 [ 143.158415][ T5349] 8021q: adding VLAN 0 to HW filter on device netdevsim1 [ 143.170109][ T5349] netdevsim netdevsim4 netdevsim2: renamed from eth2 [ 143.193161][ T1333] ieee802154 phy0 wpan0: encryption failed: -22 [ 143.198457][ T1333] ieee802154 phy1 wpan1: encryption failed: -22 [ 143.202193][ T5349] 8021q: adding VLAN 0 to HW filter on device netdevsim2 [ 143.212298][ T5349] netdevsim netdevsim4 netdevsim3: renamed from eth3 [ 143.249619][ T5349] 8021q: adding VLAN 0 to HW filter on device netdevsim3 [ 144.270495][ T5349] 8021q: adding VLAN 0 to HW filter on device bond0 [ 144.352983][ T5349] 8021q: adding VLAN 0 to HW filter on device team0 [ 144.384356][ T30] bridge0: port 1(bridge_slave_0) entered blocking state [ 144.387787][ T30] bridge0: port 1(bridge_slave_0) entered forwarding state [ 144.440119][ T30] bridge0: port 2(bridge_slave_1) entered blocking state [ 144.443324][ T30] bridge0: port 2(bridge_slave_1) entered forwarding state [ 147.498484][ T5349] 8021q: adding VLAN 0 to HW filter on device batadv0 [ 148.255168][ T5349] veth0_vlan: entered promiscuous mode [ 148.317102][ T5349] veth1_vlan: entered promiscuous mode [ 148.401822][ T5349] veth0_macvtap: entered promiscuous mode [ 148.424321][ T5349] veth1_macvtap: entered promiscuous mode [ 148.474537][ T5349] batman_adv: batadv0: Interface activated: batadv_slave_0 [ 148.500647][ T5349] batman_adv: batadv0: Interface activated: batadv_slave_1 [ 148.533508][ T184] netdevsim netdevsim4 netdevsim0: set [1, 0] type 2 family 0 port 6081 - 0 [ 148.551127][ T184] netdevsim netdevsim4 netdevsim1: set [1, 0] type 2 family 0 port 6081 - 0 [ 148.565392][ T184] netdevsim netdevsim4 netdevsim2: set [1, 0] type 2 family 0 port 6081 - 0 [ 148.579853][ T184] netdevsim netdevsim4 netdevsim3: set [1, 0] type 2 family 0 port 6081 - 0 2026/06/26 09:51:57 executed programs: 0 [ 152.306799][ T5444] Bluetooth: hci0: unexpected cc 0x0c03 length: 249 > 1 [ 152.315623][ T5444] Bluetooth: hci0: unexpected cc 0x1003 length: 249 > 9 [ 152.324086][ T5444] Bluetooth: hci1: unexpected cc 0x0c03 length: 249 > 1 [ 152.334426][ T5444] Bluetooth: hci0: unexpected cc 0x1001 length: 249 > 9 [ 152.353064][ T5444] Bluetooth: hci1: unexpected cc 0x1003 length: 249 > 9 [ 152.360007][ T5444] Bluetooth: hci1: unexpected cc 0x1001 length: 249 > 9 [ 152.364639][ T5444] Bluetooth: hci0: unexpected cc 0x0c23 length: 249 > 4 [ 152.370664][ T5444] Bluetooth: hci0: unexpected cc 0x0c38 length: 249 > 2 [ 152.377189][ T44] Bluetooth: hci1: unexpected cc 0x0c23 length: 249 > 4 [ 152.384612][ T44] Bluetooth: hci1: unexpected cc 0x0c38 length: 249 > 2 [ 152.443556][ T5352] Bluetooth: hci2: unexpected cc 0x0c03 length: 249 > 1 [ 152.464204][ T5352] Bluetooth: hci2: unexpected cc 0x1003 length: 249 > 9 [ 152.473372][ T5352] Bluetooth: hci2: unexpected cc 0x1001 length: 249 > 9 [ 152.485283][ T5352] Bluetooth: hci2: unexpected cc 0x0c23 length: 249 > 4 [ 152.489723][ T5352] Bluetooth: hci2: unexpected cc 0x0c38 length: 249 > 2 [ 152.593836][ T5349] syz-executor (5349) used greatest stack depth: 15056 bytes left [ 152.811662][ T5352] Bluetooth: hci3: unexpected cc 0x0c03 length: 249 > 1 [ 152.826346][ T5352] Bluetooth: hci3: unexpected cc 0x1003 length: 249 > 9 [ 152.832711][ T5352] Bluetooth: hci3: unexpected cc 0x1001 length: 249 > 9 [ 152.844915][ T4649] Bluetooth: hci3: unexpected cc 0x0c23 length: 249 > 4 [ 152.854087][ T4649] Bluetooth: hci3: unexpected cc 0x0c38 length: 249 > 2 [ 152.920596][ T4649] Bluetooth: hci5: unexpected cc 0x0c03 length: 249 > 1 [ 152.927325][ T4649] Bluetooth: hci5: unexpected cc 0x1003 length: 249 > 9 [ 152.939652][ T4649] Bluetooth: hci5: unexpected cc 0x1001 length: 249 > 9 [ 152.947229][ T4649] Bluetooth: hci5: unexpected cc 0x0c23 length: 249 > 4 [ 152.957092][ T4649] Bluetooth: hci5: unexpected cc 0x0c38 length: 249 > 2 [ 152.990737][ T44] Bluetooth: hci4: unexpected cc 0x0c03 length: 249 > 1 [ 153.006487][ T44] Bluetooth: hci4: unexpected cc 0x1003 length: 249 > 9 [ 153.014047][ T44] Bluetooth: hci4: unexpected cc 0x1001 length: 249 > 9 [ 153.025607][ T44] Bluetooth: hci4: unexpected cc 0x0c23 length: 249 > 4 [ 153.031007][ T44] Bluetooth: hci4: unexpected cc 0x0c38 length: 249 > 2 [ 154.469804][ T5352] Bluetooth: hci1: command tx timeout [ 154.473387][ T5352] Bluetooth: hci0: command tx timeout [ 154.549461][ T44] Bluetooth: hci2: command tx timeout [ 154.949517][ T44] Bluetooth: hci3: command tx timeout [ 155.029846][ T44] Bluetooth: hci5: command tx timeout [ 155.109152][ T44] Bluetooth: hci4: command tx timeout [ 155.193616][ T184] netdevsim netdevsim4 netdevsim3 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 155.413347][ T184] netdevsim netdevsim4 netdevsim2 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 155.521160][ T184] netdevsim netdevsim4 netdevsim1 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 155.633683][ T184] netdevsim netdevsim4 netdevsim0 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 156.481214][ T184] bridge_slave_1: left allmulticast mode [ 156.495037][ T184] bridge_slave_1: left promiscuous mode [ 156.515097][ T184] bridge0: port 2(bridge_slave_1) entered disabled state [ 156.539267][ T184] bridge_slave_0: left allmulticast mode [ 156.544760][ T184] bridge_slave_0: left promiscuous mode [ 156.549438][ T184] bridge0: port 1(bridge_slave_0) entered disabled state [ 156.557915][ T44] Bluetooth: hci0: command tx timeout [ 156.566101][ T5352] Bluetooth: hci1: command tx timeout [ 156.631243][ T44] Bluetooth: hci2: command tx timeout [ 156.816665][ T184] bond0 (unregistering): (slave bond_slave_0): Releasing backup interface [ 156.828117][ T184] bond0 (unregistering): (slave bond_slave_1): Releasing backup interface [ 156.833739][ T184] bond0 (unregistering): Released all slaves [ 157.030652][ T44] Bluetooth: hci3: command tx timeout [ 157.109660][ T44] Bluetooth: hci5: command tx timeout [ 157.190056][ T44] Bluetooth: hci4: command tx timeout [ 157.302419][ T184] hsr_slave_0: left promiscuous mode [ 157.315621][ T184] hsr_slave_1: left promiscuous mode [ 157.330614][ T184] batman_adv: batadv0: Interface deactivated: batadv_slave_0 [ 157.342769][ T184] batman_adv: batadv0: Removing interface: batadv_slave_0 [ 157.358399][ T184] batman_adv: batadv0: Interface deactivated: batadv_slave_1 [ 157.362267][ T184] batman_adv: batadv0: Removing interface: batadv_slave_1 [ 157.393870][ T184] veth1_macvtap: left promiscuous mode [ 157.397862][ T184] veth0_macvtap: left promiscuous mode [ 157.402151][ T184] veth1_vlan: left promiscuous mode [ 157.405041][ T184] veth0_vlan: left promiscuous mode [ 157.653715][ T184] team0 (unregistering): Port device team_slave_1 removed [ 157.672839][ T184] team0 (unregistering): Port device team_slave_0 removed [ 158.174653][ T5439] bridge0: port 1(bridge_slave_0) entered blocking state [ 158.184640][ T5439] bridge0: port 1(bridge_slave_0) entered disabled state [ 158.199410][ T5439] bridge_slave_0: entered allmulticast mode [ 158.204152][ T5439] bridge_slave_0: entered promiscuous mode [ 158.223792][ T5439] bridge0: port 2(bridge_slave_1) entered blocking state [ 158.226580][ T5439] bridge0: port 2(bridge_slave_1) entered disabled state [ 158.231314][ T5439] bridge_slave_1: entered allmulticast mode [ 158.235443][ T5439] bridge_slave_1: entered promiscuous mode [ 158.538464][ T5439] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 158.548281][ T5454] bridge0: port 1(bridge_slave_0) entered blocking state [ 158.560667][ T5454] bridge0: port 1(bridge_slave_0) entered disabled state [ 158.571928][ T5454] bridge_slave_0: entered allmulticast mode [ 158.581794][ T5454] bridge_slave_0: entered promiscuous mode [ 158.628537][ T5455] bridge0: port 1(bridge_slave_0) entered blocking state [ 158.632409][ T44] Bluetooth: hci0: command tx timeout [ 158.635888][ T5352] Bluetooth: hci1: command tx timeout [ 158.641478][ T5455] bridge0: port 1(bridge_slave_0) entered disabled state [ 158.650408][ T5455] bridge_slave_0: entered allmulticast mode [ 158.662454][ T5455] bridge_slave_0: entered promiscuous mode [ 158.675701][ T5455] bridge0: port 2(bridge_slave_1) entered blocking state [ 158.678860][ T5455] bridge0: port 2(bridge_slave_1) entered disabled state [ 158.693432][ T5455] bridge_slave_1: entered allmulticast mode [ 158.703374][ T5455] bridge_slave_1: entered promiscuous mode [ 158.709493][ T44] Bluetooth: hci2: command tx timeout [ 158.741236][ T5439] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 158.816299][ T5454] bridge0: port 2(bridge_slave_1) entered blocking state [ 158.831736][ T5454] bridge0: port 2(bridge_slave_1) entered disabled state [ 158.835210][ T5454] bridge_slave_1: entered allmulticast mode [ 158.850604][ T5454] bridge_slave_1: entered promiscuous mode [ 158.935673][ T4995] 8021q: adding VLAN 0 to HW filter on device eth2 [ 158.954649][ T5438] bridge0: port 1(bridge_slave_0) entered blocking state [ 158.958587][ T5438] bridge0: port 1(bridge_slave_0) entered disabled state [ 158.962710][ T5438] bridge_slave_0: entered allmulticast mode [ 158.966861][ T5438] bridge_slave_0: entered promiscuous mode [ 159.011410][ T5439] team0: Port device team_slave_0 added [ 159.033197][ T5454] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 159.040418][ T5438] bridge0: port 2(bridge_slave_1) entered blocking state [ 159.045164][ T5438] bridge0: port 2(bridge_slave_1) entered disabled state [ 159.048701][ T5438] bridge_slave_1: entered allmulticast mode [ 159.052861][ T5438] bridge_slave_1: entered promiscuous mode [ 159.056467][ T5458] bridge0: port 1(bridge_slave_0) entered blocking state [ 159.060518][ T5458] bridge0: port 1(bridge_slave_0) entered disabled state [ 159.064363][ T5458] bridge_slave_0: entered allmulticast mode [ 159.068641][ T5458] bridge_slave_0: entered promiscuous mode [ 159.080240][ T5455] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 159.098249][ T5439] team0: Port device team_slave_1 added [ 159.104222][ T5454] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 159.109306][ T44] Bluetooth: hci3: command tx timeout [ 159.123164][ T5458] bridge0: port 2(bridge_slave_1) entered blocking state [ 159.126568][ T5458] bridge0: port 2(bridge_slave_1) entered disabled state [ 159.130018][ T5458] bridge_slave_1: entered allmulticast mode [ 159.133976][ T5458] bridge_slave_1: entered promiscuous mode [ 159.150254][ T5455] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 159.155086][ T5441] bridge0: port 1(bridge_slave_0) entered blocking state [ 159.159982][ T5441] bridge0: port 1(bridge_slave_0) entered disabled state [ 159.163285][ T5441] bridge_slave_0: entered allmulticast mode [ 159.166975][ T5441] bridge_slave_0: entered promiscuous mode [ 159.189535][ T44] Bluetooth: hci5: command tx timeout [ 159.240344][ T5441] bridge0: port 2(bridge_slave_1) entered blocking state [ 159.243692][ T5441] bridge0: port 2(bridge_slave_1) entered disabled state [ 159.246888][ T5441] bridge_slave_1: entered allmulticast mode [ 159.251268][ T5441] bridge_slave_1: entered promiscuous mode [ 159.269197][ T44] Bluetooth: hci4: command tx timeout [ 159.287554][ T5438] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 159.300845][ T5458] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 159.336502][ T5439] batman_adv: batadv0: Adding interface: batadv_slave_0 [ 159.340309][ T5439] 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. [ 159.353931][ T5439] batman_adv: batadv0: Not using interface batadv_slave_0 (retrying later): interface not active [ 159.362202][ T5454] team0: Port device team_slave_0 added [ 159.367731][ T5438] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 159.386820][ T5458] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 159.393318][ T5455] team0: Port device team_slave_0 added [ 159.408444][ T5439] batman_adv: batadv0: Adding interface: batadv_slave_1 [ 159.413521][ T5439] 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. [ 159.425068][ T5439] batman_adv: batadv0: Not using interface batadv_slave_1 (retrying later): interface not active [ 159.443455][ T5454] team0: Port device team_slave_1 added [ 159.483748][ T5455] team0: Port device team_slave_1 added [ 159.490632][ T5441] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 159.514008][ T5438] team0: Port device team_slave_0 added [ 159.524338][ T5458] team0: Port device team_slave_0 added [ 159.607172][ T5441] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 159.661537][ T5438] team0: Port device team_slave_1 added [ 159.679626][ T5458] team0: Port device team_slave_1 added [ 159.686115][ T5455] batman_adv: batadv0: Adding interface: batadv_slave_0 [ 159.699298][ T5455] 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. [ 159.720095][ T5455] batman_adv: batadv0: Not using interface batadv_slave_0 (retrying later): interface not active [ 159.788550][ T5441] team0: Port device team_slave_0 added [ 159.800555][ T5454] batman_adv: batadv0: Adding interface: batadv_slave_0 [ 159.804488][ T5454] 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. [ 159.841712][ T5454] batman_adv: batadv0: Not using interface batadv_slave_0 (retrying later): interface not active [ 159.923553][ T5455] batman_adv: batadv0: Adding interface: batadv_slave_1 [ 159.927394][ T5455] 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. [ 159.940520][ T5455] batman_adv: batadv0: Not using interface batadv_slave_1 (retrying later): interface not active [ 159.957940][ T5439] hsr_slave_0: entered promiscuous mode [ 159.962266][ T5439] hsr_slave_1: entered promiscuous mode [ 159.967860][ T5441] team0: Port device team_slave_1 added [ 159.971719][ T5454] batman_adv: batadv0: Adding interface: batadv_slave_1 [ 159.974799][ T5454] 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. [ 159.986988][ T5454] batman_adv: batadv0: Not using interface batadv_slave_1 (retrying later): interface not active [ 160.003663][ T4995] 8021q: adding VLAN 0 to HW filter on device eth3 [ 160.008244][ T5458] batman_adv: batadv0: Adding interface: batadv_slave_0 [ 160.012307][ T5458] 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. [ 160.024244][ T5458] batman_adv: batadv0: Not using interface batadv_slave_0 (retrying later): interface not active [ 160.053189][ T5438] batman_adv: batadv0: Adding interface: batadv_slave_0 [ 160.057232][ T5438] 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. [ 160.070638][ T5438] batman_adv: batadv0: Not using interface batadv_slave_0 (retrying later): interface not active [ 160.092537][ T5458] batman_adv: batadv0: Adding interface: batadv_slave_1 [ 160.096962][ T5458] 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. [ 160.111221][ T5458] batman_adv: batadv0: Not using interface batadv_slave_1 (retrying later): interface not active [ 160.134254][ T5438] batman_adv: batadv0: Adding interface: batadv_slave_1 [ 160.139224][ T5438] 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. [ 160.151943][ T5438] batman_adv: batadv0: Not using interface batadv_slave_1 (retrying later): interface not active [ 160.188786][ T5441] batman_adv: batadv0: Adding interface: batadv_slave_0 [ 160.191938][ T5441] 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. [ 160.202143][ T5441] batman_adv: batadv0: Not using interface batadv_slave_0 (retrying later): interface not active [ 160.220817][ T5455] hsr_slave_0: entered promiscuous mode [ 160.224290][ T5455] hsr_slave_1: entered promiscuous mode [ 160.227485][ T5455] debugfs: 'hsr0' already exists in 'hsr' [ 160.233616][ T5455] Cannot create hsr debugfs directory [ 160.260655][ T5441] batman_adv: batadv0: Adding interface: batadv_slave_1 [ 160.263832][ T5441] 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. [ 160.277588][ T5441] batman_adv: batadv0: Not using interface batadv_slave_1 (retrying later): interface not active [ 160.373265][ T5454] hsr_slave_0: entered promiscuous mode [ 160.376809][ T5454] hsr_slave_1: entered promiscuous mode [ 160.380971][ T5454] debugfs: 'hsr0' already exists in 'hsr' [ 160.383486][ T5454] Cannot create hsr debugfs directory [ 160.514607][ T5438] hsr_slave_0: entered promiscuous mode [ 160.522088][ T5438] hsr_slave_1: entered promiscuous mode [ 160.534103][ T5438] debugfs: 'hsr0' already exists in 'hsr' [ 160.539270][ T5438] Cannot create hsr debugfs directory [ 160.601512][ T5458] hsr_slave_0: entered promiscuous mode [ 160.612598][ T5458] hsr_slave_1: entered promiscuous mode [ 160.620792][ T5458] debugfs: 'hsr0' already exists in 'hsr' [ 160.629342][ T5458] Cannot create hsr debugfs directory [ 160.709411][ T44] Bluetooth: hci0: command tx timeout [ 160.711915][ T5352] Bluetooth: hci1: command tx timeout [ 160.789343][ T44] Bluetooth: hci2: command tx timeout [ 160.818758][ T5441] hsr_slave_0: entered promiscuous mode [ 160.826225][ T5441] hsr_slave_1: entered promiscuous mode [ 160.831480][ T5441] debugfs: 'hsr0' already exists in 'hsr' [ 160.833968][ T5441] Cannot create hsr debugfs directory [ 160.886555][ T4995] 8021q: adding VLAN 0 to HW filter on device eth4 [ 161.189214][ T44] Bluetooth: hci3: command tx timeout [ 161.269392][ T44] Bluetooth: hci5: command tx timeout [ 161.349819][ T44] Bluetooth: hci4: command tx timeout [ 161.698419][ T4995] 8021q: adding VLAN 0 to HW filter on device eth5 [ 161.716419][ T5439] netdevsim netdevsim0 netdevsim0: renamed from eth0 [ 161.730352][ T5439] 8021q: adding VLAN 0 to HW filter on device netdevsim0 [ 161.739797][ T5439] netdevsim netdevsim0 netdevsim1: renamed from eth1 [ 161.754668][ T5439] 8021q: adding VLAN 0 to HW filter on device netdevsim1 [ 161.774349][ T5439] netdevsim netdevsim0 netdevsim2: renamed from eth2 [ 161.797408][ T5439] 8021q: adding VLAN 0 to HW filter on device netdevsim2 [ 161.868862][ T5439] netdevsim netdevsim0 netdevsim3: renamed from eth3 [ 161.887294][ T5439] 8021q: adding VLAN 0 to HW filter on device netdevsim3 [ 162.381936][ T5439] 8021q: adding VLAN 0 to HW filter on device bond0 [ 162.450719][ T5439] 8021q: adding VLAN 0 to HW filter on device team0 [ 162.533450][ T1148] bridge0: port 1(bridge_slave_0) entered blocking state [ 162.537501][ T1148] bridge0: port 1(bridge_slave_0) entered forwarding state [ 162.560387][ T1148] bridge0: port 2(bridge_slave_1) entered blocking state [ 162.563922][ T1148] bridge0: port 2(bridge_slave_1) entered forwarding state [ 162.605880][ T5454] netdevsim netdevsim3 netdevsim0: renamed from eth0 [ 162.633978][ T5454] 8021q: adding VLAN 0 to HW filter on device netdevsim0 [ 162.641925][ T5454] netdevsim netdevsim3 netdevsim1: renamed from eth1 [ 162.660105][ T5454] 8021q: adding VLAN 0 to HW filter on device netdevsim1 [ 162.681101][ T5454] netdevsim netdevsim3 netdevsim2: renamed from eth2 [ 162.715424][ T5454] 8021q: adding VLAN 0 to HW filter on device netdevsim2 [ 162.730652][ T5454] netdevsim netdevsim3 netdevsim3: renamed from eth3 [ 162.747659][ T5454] 8021q: adding VLAN 0 to HW filter on device netdevsim3 [ 163.142518][ T5438] netdevsim netdevsim1 netdevsim0: renamed from eth0 [ 163.177074][ T5438] 8021q: adding VLAN 0 to HW filter on device netdevsim0 [ 163.223649][ T5438] netdevsim netdevsim1 netdevsim1: renamed from eth1 [ 163.254759][ T5438] 8021q: adding VLAN 0 to HW filter on device netdevsim1 [ 163.290728][ T5438] netdevsim netdevsim1 netdevsim2: renamed from eth2 [ 163.310861][ T5438] 8021q: adding VLAN 0 to HW filter on device netdevsim2 [ 163.324959][ T5438] netdevsim netdevsim1 netdevsim3: renamed from eth3 [ 163.348534][ T5438] 8021q: adding VLAN 0 to HW filter on device netdevsim3 [ 163.743869][ T5458] netdevsim netdevsim5 netdevsim0: renamed from eth0 [ 163.767017][ T5458] 8021q: adding VLAN 0 to HW filter on device netdevsim0 [ 163.797842][ T5458] netdevsim netdevsim5 netdevsim1: renamed from eth1 [ 163.823838][ T5458] 8021q: adding VLAN 0 to HW filter on device netdevsim1 [ 163.831378][ T5458] netdevsim netdevsim5 netdevsim2: renamed from eth2 [ 163.849640][ T5458] 8021q: adding VLAN 0 to HW filter on device netdevsim2 [ 163.863197][ T5458] netdevsim netdevsim5 netdevsim3: renamed from eth3 [ 163.881297][ T5458] 8021q: adding VLAN 0 to HW filter on device netdevsim3 [ 164.251361][ T5454] 8021q: adding VLAN 0 to HW filter on device bond0 [ 164.459987][ T5455] netdevsim netdevsim4 netdevsim0: renamed from eth0 [ 164.502413][ T5455] 8021q: adding VLAN 0 to HW filter on device netdevsim0 [ 164.514774][ T5455] netdevsim netdevsim4 netdevsim1: renamed from eth1 [ 164.538299][ T5455] 8021q: adding VLAN 0 to HW filter on device netdevsim1 [ 164.574253][ T5455] netdevsim netdevsim4 netdevsim2: renamed from eth2 [ 164.604627][ T5455] 8021q: adding VLAN 0 to HW filter on device netdevsim2 [ 164.638730][ T5455] netdevsim netdevsim4 netdevsim3: renamed from eth3 [ 164.668691][ T5455] 8021q: adding VLAN 0 to HW filter on device netdevsim3 [ 164.844814][ T5454] 8021q: adding VLAN 0 to HW filter on device team0 [ 164.976465][ T5439] 8021q: adding VLAN 0 to HW filter on device batadv0 [ 164.987808][ T30] bridge0: port 1(bridge_slave_0) entered blocking state [ 164.991174][ T30] bridge0: port 1(bridge_slave_0) entered forwarding state [ 165.059638][ T30] bridge0: port 2(bridge_slave_1) entered blocking state [ 165.062735][ T30] bridge0: port 2(bridge_slave_1) entered forwarding state [ 165.117204][ T5441] netdevsim netdevsim2 netdevsim0: renamed from eth0 [ 165.132485][ T5441] 8021q: adding VLAN 0 to HW filter on device netdevsim0 [ 165.141220][ T5441] netdevsim netdevsim2 netdevsim1: renamed from eth1 [ 165.147462][ T5441] 8021q: adding VLAN 0 to HW filter on device netdevsim1 [ 165.167405][ T5441] netdevsim netdevsim2 netdevsim2: renamed from eth2 [ 165.179913][ T5441] 8021q: adding VLAN 0 to HW filter on device netdevsim2 [ 165.197138][ T5441] netdevsim netdevsim2 netdevsim3: renamed from eth3 [ 165.205723][ T5441] 8021q: adding VLAN 0 to HW filter on device netdevsim3 [ 165.248314][ T5438] 8021q: adding VLAN 0 to HW filter on device bond0 [ 165.397948][ T5438] 8021q: adding VLAN 0 to HW filter on device team0 [ 165.417156][ T5439] veth0_vlan: entered promiscuous mode [ 165.441301][ T1148] bridge0: port 1(bridge_slave_0) entered blocking state [ 165.444228][ T1148] bridge0: port 1(bridge_slave_0) entered forwarding state [ 165.452467][ T5458] 8021q: adding VLAN 0 to HW filter on device bond0 [ 165.500432][ T1148] bridge0: port 2(bridge_slave_1) entered blocking state [ 165.503522][ T1148] bridge0: port 2(bridge_slave_1) entered forwarding state [ 165.566163][ T5439] veth1_vlan: entered promiscuous mode [ 165.615695][ T5455] 8021q: adding VLAN 0 to HW filter on device bond0 [ 165.671936][ T5458] 8021q: adding VLAN 0 to HW filter on device team0 [ 165.718511][ T5455] 8021q: adding VLAN 0 to HW filter on device team0 [ 165.767820][ T184] bridge0: port 1(bridge_slave_0) entered blocking state [ 165.770723][ T184] bridge0: port 1(bridge_slave_0) entered forwarding state [ 165.829912][ T184] bridge0: port 1(bridge_slave_0) entered blocking state [ 165.833055][ T184] bridge0: port 1(bridge_slave_0) entered forwarding state [ 165.852829][ T184] bridge0: port 2(bridge_slave_1) entered blocking state [ 165.856106][ T184] bridge0: port 2(bridge_slave_1) entered forwarding state [ 165.894377][ T30] bridge0: port 2(bridge_slave_1) entered blocking state [ 165.897317][ T30] bridge0: port 2(bridge_slave_1) entered forwarding state [ 165.960421][ T5439] veth0_macvtap: entered promiscuous mode [ 166.035667][ T5439] veth1_macvtap: entered promiscuous mode [ 166.178396][ T5441] 8021q: adding VLAN 0 to HW filter on device bond0 [ 166.308727][ T5439] batman_adv: batadv0: Interface activated: batadv_slave_0 [ 166.376876][ T5439] batman_adv: batadv0: Interface activated: batadv_slave_1 [ 166.404003][ T5441] 8021q: adding VLAN 0 to HW filter on device team0 [ 166.488148][ T30] netdevsim netdevsim0 netdevsim0: set [1, 0] type 2 family 0 port 6081 - 0 [ 166.530610][ T30] netdevsim netdevsim0 netdevsim1: set [1, 0] type 2 family 0 port 6081 - 0 [ 166.552308][ T30] netdevsim netdevsim0 netdevsim2: set [1, 0] type 2 family 0 port 6081 - 0 [ 166.571865][ T184] bridge0: port 1(bridge_slave_0) entered blocking state [ 166.574870][ T184] bridge0: port 1(bridge_slave_0) entered forwarding state [ 166.617645][ T30] netdevsim netdevsim0 netdevsim3: set [1, 0] type 2 family 0 port 6081 - 0 [ 166.709895][ T184] bridge0: port 2(bridge_slave_1) entered blocking state [ 166.712757][ T184] bridge0: port 2(bridge_slave_1) entered forwarding state [ 166.941896][ T5454] 8021q: adding VLAN 0 to HW filter on device batadv0 [ 167.297294][ T1148] wlan0: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 167.317903][ T1148] wlan0: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 167.540146][ T184] wlan1: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 167.565106][ T184] wlan1: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 167.813150][ T5454] veth0_vlan: entered promiscuous mode [ 167.947872][ T5454] veth1_vlan: entered promiscuous mode 2026/06/26 09:52:13 executed programs: 12 [ 168.105919][ T5438] 8021q: adding VLAN 0 to HW filter on device batadv0 [ 168.256961][ T5690] loop0: detected capacity change from 0 to 2048 [ 168.445653][ T5454] veth0_macvtap: entered promiscuous mode [ 168.535288][ T5454] veth1_macvtap: entered promiscuous mode [ 168.697718][ T5690] EXT4-fs (loop0): mounted filesystem 00000000-0000-0000-0000-000000000000 r/w without journal. Quota mode: none. [ 168.753591][ T5438] veth0_vlan: entered promiscuous mode [ 168.763450][ T24] audit: type=1800 audit(1782467533.914:2): pid=5690 uid=0 auid=4294967295 ses=4294967295 subj=unconfined op=collect_data cause=failed(directio) comm="syz.0.17" name="file1" dev="loop0" ino=15 res=0 errno=0 [ 168.798251][ T5689] EXT4-fs error (device loop0): ext4_mb_generate_buddy:1317: group 0, block bitmap and bg descriptor inconsistent: 25 vs 281 free clusters [ 168.817441][ T24] audit: type=1800 audit(1782467533.924:3): pid=5690 uid=0 auid=4294967295 ses=4294967295 subj=unconfined op=collect_data cause=failed(directio) comm="syz.0.17" name="file1" dev="loop0" ino=15 res=0 errno=0 [ 168.850940][ T5455] 8021q: adding VLAN 0 to HW filter on device batadv0 [ 168.866592][ T5454] batman_adv: batadv0: Interface activated: batadv_slave_0 [ 168.892529][ T5438] veth1_vlan: entered promiscuous mode [ 168.925907][ T5690] EXT4-fs (loop0): Delayed block allocation failed for inode 15 at logical offset 0 with max blocks 1 with error 28 [ 168.931813][ T5458] 8021q: adding VLAN 0 to HW filter on device batadv0 [ 168.961274][ T5690] EXT4-fs (loop0): This should not happen!! Data will be lost [ 168.961274][ T5690] [ 168.985002][ T5454] batman_adv: batadv0: Interface activated: batadv_slave_1 [ 168.994059][ T5690] EXT4-fs (loop0): Total free blocks count 0 [ 169.009738][ T5690] EXT4-fs (loop0): Free/Dirty block details [ 169.027926][ T5690] EXT4-fs (loop0): free_blocks=4096 [ 169.060802][ T5690] EXT4-fs (loop0): dirty_blocks=16 [ 169.077032][ T5690] EXT4-fs (loop0): Block reservation details [ 169.094572][ T5690] EXT4-fs (loop0): i_reserved_data_blocks=1 [ 169.105683][ T13] netdevsim netdevsim3 netdevsim0: set [1, 0] type 2 family 0 port 6081 - 0 [ 169.132686][ T13] netdevsim netdevsim3 netdevsim1: set [1, 0] type 2 family 0 port 6081 - 0 [ 169.171745][ T13] netdevsim netdevsim3 netdevsim2: set [1, 0] type 2 family 0 port 6081 - 0 [ 169.194321][ T1064] EXT4-fs (loop0): Delayed block allocation failed for inode 15 at logical offset 0 with max blocks 1 with error 28 [ 169.215130][ T13] netdevsim netdevsim3 netdevsim3: set [1, 0] type 2 family 0 port 6081 - 0 [ 169.414077][ T5439] EXT4-fs warning (device loop0): ext4_evict_inode:195: inode #15: comm syz-executor: data will be lost [ 169.448545][ T5438] veth0_macvtap: entered promiscuous mode [ 169.559881][ T5438] veth1_macvtap: entered promiscuous mode [ 169.882190][ T184] wlan0: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 169.916639][ T184] wlan0: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 170.006423][ T5438] batman_adv: batadv0: Interface activated: batadv_slave_0 [ 170.065720][ T5716] loop0: detected capacity change from 0 to 2048 [ 170.224540][ T5716] EXT4-fs (loop0): mounted filesystem 00000000-0000-0000-0000-000000000000 r/w without journal. Quota mode: none. [ 170.291959][ T1148] wlan1: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 170.298648][ T24] audit: type=1800 audit(1782467535.444:4): pid=5716 uid=0 auid=4294967295 ses=4294967295 subj=unconfined op=collect_data cause=failed(directio) comm="syz.0.23" name="file1" dev="loop0" ino=15 res=0 errno=0 [ 170.317912][ T5438] batman_adv: batadv0: Interface activated: batadv_slave_1 [ 170.324629][ T5715] EXT4-fs error (device loop0): ext4_mb_generate_buddy:1317: group 0, block bitmap and bg descriptor inconsistent: 25 vs 281 free clusters [ 170.339494][ T1148] wlan1: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 170.400710][ T24] audit: type=1800 audit(1782467535.464:5): pid=5716 uid=0 auid=4294967295 ses=4294967295 subj=unconfined op=collect_data cause=failed(directio) comm="syz.0.23" name="file1" dev="loop0" ino=15 res=0 errno=0 [ 170.417309][ T5716] EXT4-fs (loop0): Delayed block allocation failed for inode 15 at logical offset 0 with max blocks 1 with error 28 [ 170.457962][ T5716] EXT4-fs (loop0): This should not happen!! Data will be lost [ 170.457962][ T5716] [ 170.471066][ T12] netdevsim netdevsim1 netdevsim0: set [1, 0] type 2 family 0 port 6081 - 0 [ 170.492186][ T5716] EXT4-fs (loop0): Total free blocks count 0 [ 170.495500][ T12] netdevsim netdevsim1 netdevsim1: set [1, 0] type 2 family 0 port 6081 - 0 [ 170.511200][ T5716] EXT4-fs (loop0): Free/Dirty block details [ 170.524584][ T12] netdevsim netdevsim1 netdevsim2: set [1, 0] type 2 family 0 port 6081 - 0 [ 170.527909][ T5716] EXT4-fs (loop0): free_blocks=4096 [ 170.531294][ T5716] EXT4-fs (loop0): dirty_blocks=16 [ 170.533762][ T12] netdevsim netdevsim1 netdevsim3: set [1, 0] type 2 family 0 port 6081 - 0 [ 170.541887][ T5716] EXT4-fs (loop0): Block reservation details [ 170.559707][ T5716] EXT4-fs (loop0): i_reserved_data_blocks=1 [ 170.581992][ T5441] 8021q: adding VLAN 0 to HW filter on device batadv0 [ 170.621655][ T174] EXT4-fs (loop0): Delayed block allocation failed for inode 15 at logical offset 0 with max blocks 1 with error 28 [ 170.658487][ T5439] EXT4-fs warning (device loop0): ext4_evict_inode:195: inode #15: comm syz-executor: data will be lost [ 170.765401][ T24] audit: type=1800 audit(1782467535.914:6): pid=5725 uid=0 auid=4294967295 ses=4294967295 subj=unconfined op=collect_data cause=failed(directio) comm="syz.3.20" name="file1" dev="tmpfs" ino=18 res=0 errno=0 [ 171.022146][ T5728] loop0: detected capacity change from 0 to 2048 [ 171.046301][ T5455] veth0_vlan: entered promiscuous mode [ 171.128050][ T24] audit: type=1800 audit(1782467536.274:7): pid=5730 uid=0 auid=4294967295 ses=4294967295 subj=unconfined op=collect_data cause=failed(directio) comm="syz.3.25" name="file1" dev="tmpfs" ino=24 res=0 errno=0 [ 171.154354][ T5728] EXT4-fs (loop0): mounted filesystem 00000000-0000-0000-0000-000000000000 r/w without journal. Quota mode: none. [ 171.210301][ T5458] veth0_vlan: entered promiscuous mode [ 171.223831][ T24] audit: type=1800 audit(1782467536.364:8): pid=5728 uid=0 auid=4294967295 ses=4294967295 subj=unconfined op=collect_data cause=failed(directio) comm="syz.0.24" name="file1" dev="loop0" ino=15 res=0 errno=0 [ 171.250288][ T5727] EXT4-fs error (device loop0): ext4_mb_generate_buddy:1317: group 0, block bitmap and bg descriptor inconsistent: 25 vs 281 free clusters [ 171.292292][ T1064] wlan0: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 171.304924][ T24] audit: type=1800 audit(1782467536.394:9): pid=5728 uid=0 auid=4294967295 ses=4294967295 subj=unconfined op=collect_data cause=failed(directio) comm="syz.0.24" name="file1" dev="loop0" ino=15 res=0 errno=0 [ 171.326639][ T1064] wlan0: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 171.332261][ T5455] veth1_vlan: entered promiscuous mode [ 171.345826][ T5728] EXT4-fs (loop0): Delayed block allocation failed for inode 15 at logical offset 0 with max blocks 1 with error 28 [ 171.395327][ T5728] EXT4-fs (loop0): This should not happen!! Data will be lost [ 171.395327][ T5728] [ 171.411557][ T5728] EXT4-fs (loop0): Total free blocks count 0 [ 171.418074][ T24] audit: type=1800 audit(1782467536.564:10): pid=5736 uid=0 auid=4294967295 ses=4294967295 subj=unconfined op=collect_data cause=failed(directio) comm="syz.3.26" name="file1" dev="tmpfs" ino=30 res=0 errno=0 [ 171.438788][ T5728] EXT4-fs (loop0): Free/Dirty block details [ 171.442898][ T5458] veth1_vlan: entered promiscuous mode [ 171.454279][ T5728] EXT4-fs (loop0): free_blocks=4096 [ 171.460928][ T5728] EXT4-fs (loop0): dirty_blocks=16 [ 171.472473][ T5441] veth0_vlan: entered promiscuous mode [ 171.475722][ T5728] EXT4-fs (loop0): Block reservation details [ 171.488878][ T5728] EXT4-fs (loop0): i_reserved_data_blocks=1 [ 171.523887][ T139] EXT4-fs (loop0): Delayed block allocation failed for inode 15 at logical offset 0 with max blocks 1 with error 28 [ 171.553320][ T5439] EXT4-fs warning (device loop0): ext4_evict_inode:195: inode #15: comm syz-executor: data will be lost [ 171.622057][ T139] wlan1: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 171.645727][ T139] wlan1: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 171.665332][ T5441] veth1_vlan: entered promiscuous mode [ 171.676086][ T24] audit: type=1800 audit(1782467536.824:11): pid=5740 uid=0 auid=4294967295 ses=4294967295 subj=unconfined op=collect_data cause=failed(directio) comm="syz.3.27" name="file1" dev="tmpfs" ino=36 res=0 errno=0 [ 171.866300][ T5458] veth0_macvtap: entered promiscuous mode [ 171.898717][ T5455] veth0_macvtap: entered promiscuous mode [ 171.917565][ T5744] loop0: detected capacity change from 0 to 2048 [ 171.948280][ T5455] veth1_macvtap: entered promiscuous mode [ 171.998219][ T5744] EXT4-fs (loop0): mounted filesystem 00000000-0000-0000-0000-000000000000 r/w without journal. Quota mode: none. [ 172.025636][ T5458] veth1_macvtap: entered promiscuous mode [ 172.084814][ T5742] EXT4-fs error (device loop0): ext4_mb_generate_buddy:1317: group 0, block bitmap and bg descriptor inconsistent: 25 vs 281 free clusters [ 172.153356][ T5744] EXT4-fs (loop0): Delayed block allocation failed for inode 15 at logical offset 0 with max blocks 1 with error 28 [ 172.174499][ T5441] veth0_macvtap: entered promiscuous mode [ 172.202030][ T5744] EXT4-fs (loop0): This should not happen!! Data will be lost [ 172.202030][ T5744] [ 172.232359][ T5744] EXT4-fs (loop0): Total free blocks count 0 [ 172.238373][ T5455] batman_adv: batadv0: Interface activated: batadv_slave_0 [ 172.254678][ T5744] EXT4-fs (loop0): Free/Dirty block details [ 172.268758][ T5441] veth1_macvtap: entered promiscuous mode [ 172.278388][ T5744] EXT4-fs (loop0): free_blocks=4096 [ 172.300141][ T5744] EXT4-fs (loop0): dirty_blocks=16 [ 172.316540][ T5744] EXT4-fs (loop0): Block reservation details [ 172.338667][ T5458] batman_adv: batadv0: Interface activated: batadv_slave_0 [ 172.346575][ T5744] EXT4-fs (loop0): i_reserved_data_blocks=1 [ 172.370557][ T5455] batman_adv: batadv0: Interface activated: batadv_slave_1 [ 172.421648][ T12] EXT4-fs (loop0): Delayed block allocation failed for inode 15 at logical offset 0 with max blocks 1 with error 28 [ 172.437166][ T5458] batman_adv: batadv0: Interface activated: batadv_slave_1 [ 172.463192][ T5439] EXT4-fs warning (device loop0): ext4_evict_inode:195: inode #15: comm syz-executor: data will be lost [ 172.522682][ T12] netdevsim netdevsim4 netdevsim0: set [1, 0] type 2 family 0 port 6081 - 0 [ 172.547285][ T12] netdevsim netdevsim4 netdevsim1: set [1, 0] type 2 family 0 port 6081 - 0 [ 172.594834][ T12] netdevsim netdevsim4 netdevsim2: set [1, 0] type 2 family 0 port 6081 - 0 [ 172.655240][ T12] netdevsim netdevsim4 netdevsim3: set [1, 0] type 2 family 0 port 6081 - 0 [ 172.686215][ T12] netdevsim netdevsim5 netdevsim0: set [1, 0] type 2 family 0 port 6081 - 0 [ 172.740129][ T5441] batman_adv: batadv0: Interface activated: batadv_slave_0 [ 172.785083][ T12] netdevsim netdevsim5 netdevsim1: set [1, 0] type 2 family 0 port 6081 - 0 [ 172.805711][ T12] netdevsim netdevsim5 netdevsim2: set [1, 0] type 2 family 0 port 6081 - 0 [ 172.843051][ T5765] loop0: detected capacity change from 0 to 2048 [ 172.857977][ T12] netdevsim netdevsim5 netdevsim3: set [1, 0] type 2 family 0 port 6081 - 0 [ 172.901932][ T5441] batman_adv: batadv0: Interface activated: batadv_slave_1 [ 172.967007][ T5765] EXT4-fs (loop0): mounted filesystem 00000000-0000-0000-0000-000000000000 r/w without journal. Quota mode: none. [ 173.039933][ T5763] EXT4-fs error (device loop0): ext4_mb_generate_buddy:1317: group 0, block bitmap and bg descriptor inconsistent: 25 vs 281 free clusters [ 173.109124][ T174] netdevsim netdevsim2 netdevsim0: set [1, 0] type 2 family 0 port 6081 - 0 [ 173.116705][ T5765] EXT4-fs (loop0): Delayed block allocation failed for inode 15 at logical offset 0 with max blocks 1 with error 28 [ 173.140863][ T174] netdevsim netdevsim2 netdevsim1: set [1, 0] type 2 family 0 port 6081 - 0 [ 173.161507][ T5765] EXT4-fs (loop0): This should not happen!! Data will be lost [ 173.161507][ T5765] [ 173.197957][ T5765] EXT4-fs (loop0): Total free blocks count 0 [ 173.216908][ T174] netdevsim netdevsim2 netdevsim2: set [1, 0] type 2 family 0 port 6081 - 0 2026/06/26 09:52:18 executed programs: 30 [ 173.227180][ T5765] EXT4-fs (loop0): Free/Dirty block details [ 173.239776][ T174] netdevsim netdevsim2 netdevsim3: set [1, 0] type 2 family 0 port 6081 - 0 [ 173.247165][ T5765] EXT4-fs (loop0): free_blocks=4096 [ 173.275956][ T5765] EXT4-fs (loop0): dirty_blocks=16 [ 173.300835][ T5765] EXT4-fs (loop0): Block reservation details [ 173.325365][ T5765] EXT4-fs (loop0): i_reserved_data_blocks=1 [ 173.466305][ T1148] EXT4-fs (loop0): Delayed block allocation failed for inode 15 at logical offset 0 with max blocks 1 with error 28 [ 173.543888][ T5439] EXT4-fs warning (device loop0): ext4_evict_inode:195: inode #15: comm syz-executor: data will be lost [ 173.778176][ T1148] wlan0: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 173.794359][ T24] kauditd_printk_skb: 15 callbacks suppressed [ 173.794377][ T24] audit: type=1800 audit(1782467538.944:27): pid=5785 uid=0 auid=4294967295 ses=4294967295 subj=unconfined op=collect_data cause=failed(directio) comm="syz.1.41" name="file1" dev="tmpfs" ino=48 res=0 errno=0 [ 173.821378][ T1148] wlan0: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 173.891262][ T24] audit: type=1800 audit(1782467539.024:28): pid=5787 uid=0 auid=4294967295 ses=4294967295 subj=unconfined op=collect_data cause=failed(directio) comm="syz.3.42" name="file1" dev="tmpfs" ino=78 res=0 errno=0 [ 173.979903][ T5790] loop0: detected capacity change from 0 to 2048 [ 173.993264][ T12] wlan0: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 174.017720][ T12] wlan0: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 174.028184][ T24] audit: type=1800 audit(1782467539.174:29): pid=5793 uid=0 auid=4294967295 ses=4294967295 subj=unconfined op=collect_data cause=failed(directio) comm="syz.1.43" name="file1" dev="tmpfs" ino=54 res=0 errno=0 [ 174.071082][ T5790] EXT4-fs (loop0): mounted filesystem 00000000-0000-0000-0000-000000000000 r/w without journal. Quota mode: none. [ 174.123836][ T24] audit: type=1800 audit(1782467539.264:30): pid=5790 uid=0 auid=4294967295 ses=4294967295 subj=unconfined op=collect_data cause=failed(directio) comm="syz.0.40" name="file1" dev="loop0" ino=15 res=0 errno=0 [ 174.134527][ T5789] EXT4-fs error (device loop0): ext4_mb_generate_buddy:1317: group 0, block bitmap and bg descriptor inconsistent: 25 vs 281 free clusters [ 174.166491][ T30] wlan0: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 174.205092][ T24] audit: type=1800 audit(1782467539.274:31): pid=5790 uid=0 auid=4294967295 ses=4294967295 subj=unconfined op=collect_data cause=failed(directio) comm="syz.0.40" name="file1" dev="loop0" ino=15 res=0 errno=0 [ 174.216932][ T5790] EXT4-fs (loop0): Delayed block allocation failed for inode 15 at logical offset 0 with max blocks 1 with error 28 [ 174.227948][ T30] wlan0: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 174.256455][ T5790] EXT4-fs (loop0): This should not happen!! Data will be lost [ 174.256455][ T5790] [ 174.287771][ T24] audit: type=1800 audit(1782467539.274:32): pid=5795 uid=0 auid=4294967295 ses=4294967295 subj=unconfined op=collect_data cause=failed(directio) comm="syz.3.44" name="file1" dev="tmpfs" ino=84 res=0 errno=0 [ 174.331270][ T5790] EXT4-fs (loop0): Total free blocks count 0 [ 174.356760][ T5790] EXT4-fs (loop0): Free/Dirty block details [ 174.376904][ T24] audit: type=1800 audit(1782467539.524:33): pid=5801 uid=0 auid=4294967295 ses=4294967295 subj=unconfined op=collect_data cause=failed(directio) comm="syz.1.45" name="file1" dev="tmpfs" ino=60 res=0 errno=0 [ 174.394353][ T5790] EXT4-fs (loop0): free_blocks=4096 [ 174.417530][ T30] wlan1: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 174.423382][ T5790] EXT4-fs (loop0): dirty_blocks=16 [ 174.433928][ T5790] EXT4-fs (loop0): Block reservation details [ 174.439249][ T30] wlan1: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 174.450532][ T5790] EXT4-fs (loop0): i_reserved_data_blocks=1 [ 174.501339][ T24] audit: type=1800 audit(1782467539.654:34): pid=5804 uid=0 auid=4294967295 ses=4294967295 subj=unconfined op=collect_data cause=failed(directio) comm="syz.3.46" name="file1" dev="tmpfs" ino=90 res=0 errno=0 [ 174.535689][ T30] EXT4-fs (loop0): Delayed block allocation failed for inode 15 at logical offset 0 with max blocks 1 with error 28 [ 174.601403][ T5439] EXT4-fs warning (device loop0): ext4_evict_inode:195: inode #15: comm syz-executor: data will be lost [ 174.616178][ T5469] wlan1: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 174.640995][ T5469] wlan1: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 174.702203][ T24] audit: type=1800 audit(1782467539.844:35): pid=5808 uid=0 auid=4294967295 ses=4294967295 subj=unconfined op=collect_data cause=failed(directio) comm="syz.1.47" name="file1" dev="tmpfs" ino=66 res=0 errno=0 [ 174.815326][ T24] audit: type=1800 audit(1782467539.964:36): pid=5810 uid=0 auid=4294967295 ses=4294967295 subj=unconfined op=collect_data cause=failed(directio) comm="syz.3.49" name="file1" dev="tmpfs" ino=96 res=0 errno=0 [ 174.898868][ T5469] wlan1: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 174.928389][ T5469] wlan1: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 175.164000][ T5817] loop0: detected capacity change from 0 to 2048 [ 175.297669][ T5817] EXT4-fs (loop0): mounted filesystem 00000000-0000-0000-0000-000000000000 r/w without journal. Quota mode: none. [ 175.408200][ T5815] EXT4-fs error (device loop0): ext4_mb_generate_buddy:1317: group 0, block bitmap and bg descriptor inconsistent: 25 vs 281 free clusters [ 175.544947][ T5817] EXT4-fs (loop0): Delayed block allocation failed for inode 15 at logical offset 0 with max blocks 1 with error 28 [ 175.626710][ T5817] EXT4-fs (loop0): This should not happen!! Data will be lost [ 175.626710][ T5817] [ 175.699334][ T5817] EXT4-fs (loop0): Total free blocks count 0 [ 175.736971][ T5817] EXT4-fs (loop0): Free/Dirty block details [ 175.770364][ T5817] EXT4-fs (loop0): free_blocks=4096 [ 175.794190][ T5817] EXT4-fs (loop0): dirty_blocks=16 [ 175.828556][ T5817] EXT4-fs (loop0): Block reservation details [ 175.895666][ T5817] EXT4-fs (loop0): i_reserved_data_blocks=1 [ 176.034383][ T5469] EXT4-fs (loop0): Delayed block allocation failed for inode 15 at logical offset 0 with max blocks 1 with error 28 [ 176.130905][ T5439] EXT4-fs warning (device loop0): ext4_evict_inode:195: inode #15: comm syz-executor: data will be lost [ 176.655451][ T5871] loop0: detected capacity change from 0 to 2048 [ 176.838351][ T5871] EXT4-fs (loop0): mounted filesystem 00000000-0000-0000-0000-000000000000 r/w without journal. Quota mode: none. [ 176.926955][ T5868] EXT4-fs error (device loop0): ext4_mb_generate_buddy:1317: group 0, block bitmap and bg descriptor inconsistent: 25 vs 281 free clusters [ 176.997959][ T5871] EXT4-fs (loop0): Delayed block allocation failed for inode 15 at logical offset 0 with max blocks 1 with error 28 [ 177.052894][ T5871] EXT4-fs (loop0): This should not happen!! Data will be lost [ 177.052894][ T5871] [ 177.105181][ T5871] EXT4-fs (loop0): Total free blocks count 0 [ 177.138646][ T5871] EXT4-fs (loop0): Free/Dirty block details [ 177.170303][ T5871] EXT4-fs (loop0): free_blocks=4096 [ 177.194068][ T5871] EXT4-fs (loop0): dirty_blocks=16 [ 177.215648][ T5871] EXT4-fs (loop0): Block reservation details [ 177.240367][ T5871] EXT4-fs (loop0): i_reserved_data_blocks=1 [ 177.319795][ T1148] EXT4-fs (loop0): Delayed block allocation failed for inode 15 at logical offset 0 with max blocks 1 with error 28 [ 177.386114][ T5439] EXT4-fs warning (device loop0): ext4_evict_inode:195: inode #15: comm syz-executor: data will be lost [ 177.905382][ T5918] loop0: detected capacity change from 0 to 2048 [ 178.089738][ T5918] EXT4-fs (loop0): mounted filesystem 00000000-0000-0000-0000-000000000000 r/w without journal. Quota mode: none. [ 178.206712][ T5915] EXT4-fs error (device loop0): ext4_mb_generate_buddy:1317: group 0, block bitmap and bg descriptor inconsistent: 25 vs 281 free clusters [ 178.260560][ T5918] EXT4-fs (loop0): Delayed block allocation failed for inode 15 at logical offset 0 with max blocks 1 with error 28 [ 178.305078][ T5918] EXT4-fs (loop0): This should not happen!! Data will be lost [ 178.305078][ T5918] [ 178.344746][ T5918] EXT4-fs (loop0): Total free blocks count 0 [ 178.376515][ T5918] EXT4-fs (loop0): Free/Dirty block details 2026/06/26 09:52:23 executed programs: 84 [ 178.406632][ T5918] EXT4-fs (loop0): free_blocks=4096 [ 178.425861][ T5918] EXT4-fs (loop0): dirty_blocks=16 [ 178.446351][ T5918] EXT4-fs (loop0): Block reservation details [ 178.478357][ T5918] EXT4-fs (loop0): i_reserved_data_blocks=1 [ 178.555655][ T139] EXT4-fs (loop0): Delayed block allocation failed for inode 15 at logical offset 0 with max blocks 1 with error 28 [ 178.607009][ T5439] EXT4-fs warning (device loop0): ext4_evict_inode:195: inode #15: comm syz-executor: data will be lost [ 178.982301][ T24] kauditd_printk_skb: 51 callbacks suppressed [ 178.982315][ T24] audit: type=1800 audit(1782467544.134:88): pid=5964 uid=0 auid=4294967295 ses=4294967295 subj=unconfined op=collect_data cause=failed(directio) comm="syz.3.95" name="file1" dev="tmpfs" ino=156 res=0 errno=0 [ 179.022003][ T5973] loop0: detected capacity change from 0 to 2048 [ 179.098809][ T24] audit: type=1800 audit(1782467544.174:89): pid=5966 uid=0 auid=4294967295 ses=4294967295 subj=unconfined op=collect_data cause=failed(directio) comm="syz.2.96" name="file1" dev="tmpfs" ino=66 res=0 errno=0 [ 179.165468][ T5973] EXT4-fs (loop0): mounted filesystem 00000000-0000-0000-0000-000000000000 r/w without journal. Quota mode: none. [ 179.199625][ T24] audit: type=1800 audit(1782467544.224:90): pid=5972 uid=0 auid=4294967295 ses=4294967295 subj=unconfined op=collect_data cause=failed(directio) comm="syz.5.99" name="file1" dev="tmpfs" ino=72 res=0 errno=0 [ 179.292374][ T24] audit: type=1800 audit(1782467544.234:91): pid=5969 uid=0 auid=4294967295 ses=4294967295 subj=unconfined op=collect_data cause=failed(directio) comm="syz.4.97" name="file1" dev="tmpfs" ino=72 res=0 errno=0 [ 179.374954][ T24] audit: type=1800 audit(1782467544.274:92): pid=5974 uid=0 auid=4294967295 ses=4294967295 subj=unconfined op=collect_data cause=failed(directio) comm="syz.1.98" name="file1" dev="tmpfs" ino=132 res=0 errno=0 [ 179.469631][ T24] audit: type=1800 audit(1782467544.514:93): pid=5982 uid=0 auid=4294967295 ses=4294967295 subj=unconfined op=collect_data cause=failed(directio) comm="syz.3.100" name="file1" dev="tmpfs" ino=162 res=0 errno=0 [ 179.479988][ T5439] EXT4-fs (loop0): unmounting filesystem 00000000-0000-0000-0000-000000000000. [ 179.567028][ T24] audit: type=1800 audit(1782467544.544:94): pid=5973 uid=0 auid=4294967295 ses=4294967295 subj=unconfined op=collect_data cause=failed(directio) comm="syz.0.94" name="file1" dev="loop0" ino=15 res=0 errno=0 [ 179.666254][ T24] audit: type=1800 audit(1782467544.614:95): pid=5985 uid=0 auid=4294967295 ses=4294967295 subj=unconfined op=collect_data cause=failed(directio) comm="syz.2.101" name="file1" dev="tmpfs" ino=72 res=0 errno=0 [ 179.786777][ T24] audit: type=1800 audit(1782467544.664:96): pid=5988 uid=0 auid=4294967295 ses=4294967295 subj=unconfined op=collect_data cause=failed(directio) comm="syz.5.102" name="file1" dev="tmpfs" ino=78 res=0 errno=0 [ 179.900844][ T24] audit: type=1800 audit(1782467544.684:97): pid=5989 uid=0 auid=4294967295 ses=4294967295 subj=unconfined op=collect_data cause=failed(directio) comm="syz.4.103" name="file1" dev="tmpfs" ino=78 res=0 errno=0 [ 179.972133][ T6010] loop0: detected capacity change from 0 to 2048 [ 180.106444][ T6010] EXT4-fs (loop0): mounted filesystem 00000000-0000-0000-0000-000000000000 r/w without journal. Quota mode: none. [ 180.168795][ T6007] EXT4-fs error (device loop0): ext4_mb_generate_buddy:1317: group 0, block bitmap and bg descriptor inconsistent: 25 vs 281 free clusters [ 180.227013][ T6010] EXT4-fs (loop0): Delayed block allocation failed for inode 15 at logical offset 0 with max blocks 1 with error 28 [ 180.273661][ T6010] EXT4-fs (loop0): This should not happen!! Data will be lost [ 180.273661][ T6010] [ 180.305231][ T6010] EXT4-fs (loop0): Total free blocks count 0 [ 180.328193][ T6010] EXT4-fs (loop0): Free/Dirty block details [ 180.355848][ T6010] EXT4-fs (loop0): free_blocks=4096 [ 180.372866][ T6010] EXT4-fs (loop0): dirty_blocks=16 [ 180.388264][ T6010] EXT4-fs (loop0): Block reservation details [ 180.431826][ T6010] EXT4-fs (loop0): i_reserved_data_blocks=1 [ 180.487901][ T184] EXT4-fs (loop0): Delayed block allocation failed for inode 15 at logical offset 0 with max blocks 1 with error 28 [ 180.570567][ T5439] EXT4-fs warning (device loop0): ext4_evict_inode:195: inode #15: comm syz-executor: data will be lost [ 180.993329][ T6060] loop0: detected capacity change from 0 to 2048 [ 181.116820][ T6060] EXT4-fs (loop0): mounted filesystem 00000000-0000-0000-0000-000000000000 r/w without journal. Quota mode: none. [ 181.280304][ T6058] EXT4-fs error (device loop0): ext4_mb_generate_buddy:1317: group 0, block bitmap and bg descriptor inconsistent: 25 vs 281 free clusters [ 181.360230][ T6060] EXT4-fs (loop0): Delayed block allocation failed for inode 15 at logical offset 0 with max blocks 1 with error 28 [ 181.418159][ T6060] EXT4-fs (loop0): This should not happen!! Data will be lost [ 181.418159][ T6060] [ 181.460599][ T6060] EXT4-fs (loop0): Total free blocks count 0 [ 181.481560][ T6060] EXT4-fs (loop0): Free/Dirty block details [ 181.503647][ T6060] EXT4-fs (loop0): free_blocks=4096 [ 181.518577][ T6060] EXT4-fs (loop0): dirty_blocks=16 [ 181.538482][ T6060] EXT4-fs (loop0): Block reservation details [ 181.561245][ T6060] EXT4-fs (loop0): i_reserved_data_blocks=1 [ 181.667610][ T1148] EXT4-fs (loop0): Delayed block allocation failed for inode 15 at logical offset 0 with max blocks 1 with error 28 [ 181.775029][ T5439] EXT4-fs warning (device loop0): ext4_evict_inode:195: inode #15: comm syz-executor: data will be lost [ 182.264120][ T6114] loop0: detected capacity change from 0 to 2048 [ 182.433191][ T6114] EXT4-fs (loop0): mounted filesystem 00000000-0000-0000-0000-000000000000 r/w without journal. Quota mode: none. [ 182.571392][ T6112] EXT4-fs error (device loop0): ext4_mb_generate_buddy:1317: group 0, block bitmap and bg descriptor inconsistent: 25 vs 281 free clusters [ 182.625099][ T6114] EXT4-fs (loop0): Delayed block allocation failed for inode 15 at logical offset 0 with max blocks 1 with error 28 [ 182.697149][ T6114] EXT4-fs (loop0): This should not happen!! Data will be lost [ 182.697149][ T6114] [ 182.740423][ T6114] EXT4-fs (loop0): Total free blocks count 0 [ 182.772310][ T6114] EXT4-fs (loop0): Free/Dirty block details [ 182.804619][ T6114] EXT4-fs (loop0): free_blocks=4096 [ 182.825053][ T6114] EXT4-fs (loop0): dirty_blocks=16 [ 182.850456][ T6114] EXT4-fs (loop0): Block reservation details [ 182.882813][ T6114] EXT4-fs (loop0): i_reserved_data_blocks=1 [ 182.955886][ T1148] EXT4-fs (loop0): Delayed block allocation failed for inode 15 at logical offset 0 with max blocks 1 with error 28 [ 183.048882][ T5439] EXT4-fs warning (device loop0): ext4_evict_inode:195: inode #15: comm syz-executor: data will be lost 2026/06/26 09:52:28 executed programs: 159 [ 183.600997][ T6171] loop0: detected capacity change from 0 to 2048 [ 183.716569][ T6171] EXT4-fs (loop0): mounted filesystem 00000000-0000-0000-0000-000000000000 r/w without journal. Quota mode: none. [ 183.820583][ T6169] EXT4-fs error (device loop0): ext4_mb_generate_buddy:1317: group 0, block bitmap and bg descriptor inconsistent: 25 vs 281 free clusters [ 183.897837][ T6171] EXT4-fs (loop0): Delayed block allocation failed for inode 15 at logical offset 0 with max blocks 1 with error 28 [ 183.954038][ T6171] EXT4-fs (loop0): This should not happen!! Data will be lost [ 183.954038][ T6171] [ 184.008685][ T6171] EXT4-fs (loop0): Total free blocks count 0 [ 184.013842][ T24] kauditd_printk_skb: 68 callbacks suppressed [ 184.013858][ T24] audit: type=1800 audit(1782467549.164:166): pid=6188 uid=0 auid=4294967295 ses=4294967295 subj=unconfined op=collect_data cause=failed(directio) comm="syz.5.167" name="file1" dev="tmpfs" ino=150 res=0 errno=0 [ 184.044065][ T6171] EXT4-fs (loop0): Free/Dirty block details [ 184.088231][ T6171] EXT4-fs (loop0): free_blocks=4096 [ 184.132219][ T6171] EXT4-fs (loop0): dirty_blocks=16 [ 184.156247][ T6171] EXT4-fs (loop0): Block reservation details [ 184.168676][ T24] audit: type=1800 audit(1782467549.314:167): pid=6193 uid=0 auid=4294967295 ses=4294967295 subj=unconfined op=collect_data cause=failed(directio) comm="syz.2.169" name="file1" dev="tmpfs" ino=150 res=0 errno=0 [ 184.189523][ T6171] EXT4-fs (loop0): i_reserved_data_blocks=1 [ 184.288851][ T24] audit: type=1800 audit(1782467549.434:168): pid=6198 uid=0 auid=4294967295 ses=4294967295 subj=unconfined op=collect_data cause=failed(directio) comm="syz.1.170" name="file1" dev="tmpfs" ino=216 res=0 errno=0 [ 184.347423][ T139] EXT4-fs (loop0): Delayed block allocation failed for inode 15 at logical offset 0 with max blocks 1 with error 28 [ 184.413517][ T24] audit: type=1800 audit(1782467549.514:169): pid=6201 uid=0 auid=4294967295 ses=4294967295 subj=unconfined op=collect_data cause=failed(directio) comm="syz.3.172" name="file1" dev="tmpfs" ino=240 res=0 errno=0 [ 184.461329][ T5439] EXT4-fs warning (device loop0): ext4_evict_inode:195: inode #15: comm syz-executor: data will be lost [ 184.507023][ T24] audit: type=1800 audit(1782467549.514:170): pid=6200 uid=0 auid=4294967295 ses=4294967295 subj=unconfined op=collect_data cause=failed(directio) comm="syz.4.171" name="file1" dev="tmpfs" ino=156 res=0 errno=0 [ 184.599784][ T24] audit: type=1800 audit(1782467549.584:171): pid=6203 uid=0 auid=4294967295 ses=4294967295 subj=unconfined op=collect_data cause=failed(directio) comm="syz.5.173" name="file1" dev="tmpfs" ino=156 res=0 errno=0 [ 184.701723][ T24] audit: type=1800 audit(1782467549.764:172): pid=6208 uid=0 auid=4294967295 ses=4294967295 subj=unconfined op=collect_data cause=failed(directio) comm="syz.2.174" name="file1" dev="tmpfs" ino=156 res=0 errno=0 [ 184.823240][ T24] audit: type=1800 audit(1782467549.924:173): pid=6216 uid=0 auid=4294967295 ses=4294967295 subj=unconfined op=collect_data cause=failed(directio) comm="syz.4.178" name="file1" dev="tmpfs" ino=162 res=0 errno=0 [ 184.933549][ T24] audit: type=1800 audit(1782467549.934:174): pid=6215 uid=0 auid=4294967295 ses=4294967295 subj=unconfined op=collect_data cause=failed(directio) comm="syz.3.177" name="file1" dev="tmpfs" ino=246 res=0 errno=0 [ 184.993872][ T6225] loop0: detected capacity change from 0 to 2048 [ 185.035882][ T24] audit: type=1800 audit(1782467549.934:175): pid=6214 uid=0 auid=4294967295 ses=4294967295 subj=unconfined op=collect_data cause=failed(directio) comm="syz.1.176" name="file1" dev="tmpfs" ino=222 res=0 errno=0 [ 185.117238][ T6225] EXT4-fs (loop0): mounted filesystem 00000000-0000-0000-0000-000000000000 r/w without journal. Quota mode: none. [ 185.195618][ T6220] EXT4-fs error (device loop0): ext4_mb_generate_buddy:1317: group 0, block bitmap and bg descriptor inconsistent: 25 vs 281 free clusters [ 185.248311][ T6225] EXT4-fs (loop0): Delayed block allocation failed for inode 15 at logical offset 0 with max blocks 1 with error 28 [ 185.327657][ T6225] EXT4-fs (loop0): This should not happen!! Data will be lost [ 185.327657][ T6225] [ 185.356494][ T6225] EXT4-fs (loop0): Total free blocks count 0 [ 185.378858][ T6225] EXT4-fs (loop0): Free/Dirty block details [ 185.399445][ T6225] EXT4-fs (loop0): free_blocks=4096 [ 185.417018][ T6225] EXT4-fs (loop0): dirty_blocks=16 [ 185.443772][ T6225] EXT4-fs (loop0): Block reservation details [ 185.462865][ T6225] EXT4-fs (loop0): i_reserved_data_blocks=1 [ 185.526472][ T5469] EXT4-fs (loop0): Delayed block allocation failed for inode 15 at logical offset 0 with max blocks 1 with error 28 [ 185.605055][ T5439] EXT4-fs warning (device loop0): ext4_evict_inode:195: inode #15: comm syz-executor: data will be lost [ 185.956851][ T6271] loop0: detected capacity change from 0 to 2048 [ 186.043663][ T6271] EXT4-fs (loop0): mounted filesystem 00000000-0000-0000-0000-000000000000 r/w without journal. Quota mode: none. [ 186.172188][ T6270] EXT4-fs error (device loop0): ext4_mb_generate_buddy:1317: group 0, block bitmap and bg descriptor inconsistent: 25 vs 281 free clusters [ 186.305809][ T6271] ------------[ cut here ]------------ [ 186.308319][ T6271] kernel BUG at fs/ext4/inode.c:2827! [ 186.366230][ T6271] Oops: invalid opcode: 0000 [#1] SMP KASAN NOPTI [ 186.370228][ T6271] CPU: 0 UID: 0 PID: 6271 Comm: syz.0.191 Not tainted syzkaller #0 PREEMPT(full) [ 186.374681][ T6271] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014 [ 186.378988][ T6271] RIP: 0010:ext4_do_writepages+0x479b/0x47a0 [ 186.381654][ T6271] Code: c6 e0 da e4 8b e8 65 50 9b fe 90 0f 0b e8 0d c3 39 ff 4c 89 f7 48 c7 c6 c0 df e4 8b e8 4e 50 9b fe 90 0f 0b e8 f6 c2 39 ff 90 <0f> 0b 0f 1f 00 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 0f [ 186.390492][ T6271] RSP: 0018:ffffc9000359ef40 EFLAGS: 00010293 [ 186.393303][ T6271] RAX: ffffffff828cbeda RBX: 0000004210000000 RCX: ffff888032772540 [ 186.396738][ T6271] RDX: 0000000000000000 RSI: 0000004000000000 RDI: 0000000000000000 [ 186.400299][ T6271] RBP: ffffc9000359f350 R08: ffff888012c3a5d7 R09: 1ffff110025874ba [ 186.404866][ T6271] R10: dffffc0000000000 R11: ffffed10025874bb R12: ffffc9000359f5e0 [ 186.408407][ T6271] R13: 1ffff920006b3ebc R14: 0000004000000000 R15: 0000000000000001 [ 186.411792][ T6271] FS: 00007f1d957886c0(0000) GS:ffff88808c81b000(0000) knlGS:0000000000000000 [ 186.415545][ T6271] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 186.418577][ T6271] CR2: 00007fc6c15adac0 CR3: 000000003687f000 CR4: 0000000000352ef0 [ 186.422945][ T6271] Call Trace: [ 186.424678][ T6271] [ 186.426168][ T6271] ? unwind_next_frame+0x8f/0x2550 [ 186.428437][ T6271] ? __kasan_check_byte+0x12/0x40 [ 186.430746][ T6271] ? __lock_acquire+0x683/0x2cf0 [ 186.432718][ T6271] ? look_up_lock_class+0x57/0x110 [ 186.435051][ T6271] ? register_lock_class+0x31/0x2e0 [ 186.437239][ T6271] ? __pfx_ext4_do_writepages+0x10/0x10 [ 186.439735][ T6271] ? __lock_acquire+0x683/0x2cf0 [ 186.442060][ T6271] ? ktime_get+0x45/0x220 [ 186.444259][ T6271] ? kvm_clock_get_cycles+0x47/0x60 [ 186.446868][ T6271] ? ktime_get+0x1f5/0x220 [ 186.448873][ T6271] ? lapic_next_event+0x11/0x20 [ 186.451003][ T6271] ? clockevents_program_event+0x491/0x630 [ 186.453503][ T6271] ? ext4_writepages+0x205/0x3b0 [ 186.455674][ T6271] ? ext4_writepages+0x205/0x3b0 [ 186.458052][ T6271] ext4_writepages+0x241/0x3b0 [ 186.460809][ T6271] ? __lock_acquire+0x683/0x2cf0 [ 186.463537][ T6271] ? __pfx_ext4_writepages+0x10/0x10 [ 186.465854][ T6271] ? irqentry_exit+0x218/0x8f0 [ 186.467950][ T6271] ? __pfx_ext4_writepages+0x10/0x10 [ 186.470173][ T6271] do_writepages+0x338/0x560 [ 186.472020][ T6271] ? do_raw_spin_unlock+0x4d/0x210 [ 186.474133][ T6271] file_write_and_wait_range+0x36e/0x440 [ 186.476817][ T6271] ? preempt_schedule_common+0x82/0xd0 [ 186.479506][ T6271] ? __pfx_file_write_and_wait_range+0x10/0x10 [ 186.482351][ T6271] ? copy_folio_from_iter_atomic+0x1974/0x1a30 [ 186.484988][ T6271] mmb_fsync_noflush+0x73/0x1d0 [ 186.487006][ T6271] ext4_sync_file+0x41a/0xd00 [ 186.488879][ T6271] ? __pfx_ext4_sync_file+0x10/0x10 [ 186.491322][ T6271] ? ext4_buffered_write_iter+0xd6/0x370 [ 186.494072][ T6271] ? sync_lazytime+0x5a/0x4c0 [ 186.496658][ T6271] ext4_buffered_write_iter+0x2c7/0x370 [ 186.499351][ T6271] ext4_file_write_iter+0x947/0x1c70 [ 186.501525][ T6271] ? vfs_write+0x22b/0xba0 [ 186.503327][ T6271] ? vfs_write+0x22b/0xba0 [ 186.505150][ T6271] ? __pfx_ext4_file_write_iter+0x10/0x10 [ 186.507650][ T6271] vfs_write+0x612/0xba0 [ 186.509501][ T6271] ? __pfx_vfs_write+0x10/0x10 [ 186.512034][ T6271] ? __fget_files+0x2a/0x420 [ 186.514483][ T6271] __x64_sys_pwrite64+0x196/0x220 [ 186.516979][ T6271] ? __pfx___x64_sys_pwrite64+0x10/0x10 [ 186.519358][ T6271] ? entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 186.521868][ T6271] do_syscall_64+0x174/0x580 [ 186.523960][ T6271] ? trace_irq_disable+0x3b/0x140 [ 186.526245][ T6271] ? clear_bhb_loop+0x40/0x90 [ 186.528524][ T6271] entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 186.531219][ T6271] RIP: 0033:0x7f1d9499ce59 [ 186.533058][ T6271] Code: ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 e8 ff ff ff f7 d8 64 89 01 48 [ 186.540959][ T6271] RSP: 002b:00007f1d95788028 EFLAGS: 00000246 ORIG_RAX: 0000000000000012 [ 186.545303][ T6271] RAX: ffffffffffffffda RBX: 00007f1d94c15fa0 RCX: 00007f1d9499ce59 [ 186.548911][ T6271] RDX: 0000000000000001 RSI: 0000200000000880 RDI: 0000000000000004 [ 186.552557][ T6271] RBP: 00007f1d94a32e6f R08: 0000000000000000 R09: 0000000000000000 [ 186.556083][ T6271] R10: 0000000000000083 R11: 0000000000000246 R12: 0000000000000000 [ 186.559904][ T6271] R13: 00007f1d94c16038 R14: 00007f1d94c15fa0 R15: 00007ffef842a808 [ 186.563997][ T6271] [ 186.565518][ T6271] Modules linked in: [ 186.568907][ T6271] ---[ end trace 0000000000000000 ]--- [ 187.609526][ T6271] RIP: 0010:ext4_do_writepages+0x479b/0x47a0 [ 187.628529][ T6271] Code: c6 e0 da e4 8b e8 65 50 9b fe 90 0f 0b e8 0d c3 39 ff 4c 89 f7 48 c7 c6 c0 df e4 8b e8 4e 50 9b fe 90 0f 0b e8 f6 c2 39 ff 90 <0f> 0b 0f 1f 00 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 0f [ 187.707665][ T6271] RSP: 0018:ffffc9000359ef40 EFLAGS: 00010293 [ 187.729572][ T6271] RAX: ffffffff828cbeda RBX: 0000004210000000 RCX: ffff888032772540 [ 187.750714][ T6271] RDX: 0000000000000000 RSI: 0000004000000000 RDI: 0000000000000000 [ 187.780176][ T6271] RBP: ffffc9000359f350 R08: ffff888012c3a5d7 R09: 1ffff110025874ba [ 187.801422][ T6271] R10: dffffc0000000000 R11: ffffed10025874bb R12: ffffc9000359f5e0 [ 187.835881][ T6271] R13: 1ffff920006b3ebc R14: 0000004000000000 R15: 0000000000000001 [ 187.864114][ T6271] FS: 00007f1d957886c0(0000) GS:ffff88808c81b000(0000) knlGS:0000000000000000 [ 187.896628][ T6271] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 187.917657][ T6271] CR2: 0000000000000000 CR3: 000000003687f000 CR4: 0000000000352ef0 [ 187.944374][ T6271] Kernel panic - not syncing: Fatal exception [ 187.947324][ T6271] Kernel Offset: disabled [ 187.949316][ T6271] Rebooting in 86400 seconds.. VM DIAGNOSIS: 09:52:31 Registers: info registers vcpu 0 CPU#0 RAX=0000000000000000 RBX=0000000000000000 RCX=00000000ffffffff RDX=0000000000000003 RSI=0000000000002000 RDI=0000000000000000 RBP=ffff888034230bc8 RSP=ffffc900000076d8 R8 =ffffffff8176f21f R9 =0000000000000000 R10=0000000000000000 R11=ffffffff8e959c20 R12=ffffffffffffff03 R13=0000000000000000 R14=ffff888034230000 R15=0000000000000000 RIP=ffffffff81a22b50 RFL=00000006 [-----P-] CPL=0 II=0 A20=1 SMM=0 HLT=0 ES =0000 0000000000000000 ffffffff 00c00000 CS =0010 0000000000000000 ffffffff 00a09b00 DPL=0 CS64 [-RA] SS =0018 0000000000000000 ffffffff 00c09300 DPL=0 DS [-WA] DS =0000 0000000000000000 ffffffff 00c00000 FS =0000 000055557f87b500 ffffffff 00c00000 GS =0000 ffff88808c81b000 ffffffff 00c00000 LDT=0000 0000000000000000 ffffffff 00c00000 TR =0040 fffffe0000003000 00004087 00008b00 DPL=0 TSS64-busy GDT= fffffe0000001000 0000007f IDT= fffffe0000000000 00000fff CR0=80050033 CR2=000055557f88e9e8 CR3=0000000059846000 CR4=00352ef0 DR0=0000000000000000 DR1=0000000000000000 DR2=0000000000000000 DR3=0000000000000000 DR6=00000000ffff0ff0 DR7=0000000000000400 EFER=0000000000000d01 FCW=037f FSW=0000 [ST=0] FTW=00 MXCSR=00001f80 FPR0=0000000000000000 0000 FPR1=0000000000000000 0000 FPR2=0000000000000000 0000 FPR3=0000000000000000 0000 FPR4=0000000000000000 0000 FPR5=0000000000000000 0000 FPR6=0000000000000000 0000 FPR7=0000000000000000 0000 Opmask00=0000000000008001 Opmask01=0000000000000000 Opmask02=00000000ffffffef Opmask03=0000000000000000 Opmask04=0000000000000000 Opmask05=0000000000000000 Opmask06=0000000000000000 Opmask07=0000000000000000 ZMM00=0000000000000000 0000000000000000 0000000000000000 0000000000000000 0000000000000000 0000000000000000 0000000000000000 0000000000000000 ZMM01=0000000000000000 0000000000000000 0000000000000000 0000000000000000 0000000000000000 0000000000000000 0000000000000000 00007f69a9f4d560 ZMM02=0000000000000000 0000000000000000 0000000000000000 0000000000000000 0000000000000000 0000000000000000 0000000000000000 00007ffc8c1b96e6 ZMM03=0000000000000000 0000000000000000 0000000000000000 0000000000000000 0000000000000000 0000000000000000 00007ffc8c1b96e6 00007ffc8c1b96ec ZMM04=0000000000000000 0000000000000000 0000000000000000 0000000000000000 0000000000000000 0000000000000000 0000000000000000 00007f69a9233452 ZMM05=0000000000000000 0000000000000000 0000000000000000 0000000000000000 0000000000000000 0000000000000000 0000000000000000 00007f69a9233492 ZMM06=0000000000000000 0000000000000000 0000000000000000 0000000000000000 0000000000000000 0000000000000000 0000000000000000 00007f69a92335f6 ZMM07=0000000000000000 0000000000000000 0000000000000000 0000000000000000 0000000000000000 0000000000000000 0000000000000000 00007f69a9233484 ZMM08=0000000000000000 0000000000000000 0000000000000000 0000000000000000 0000000000000000 0000000000000000 0000000000000000 0000000000000000 ZMM09=0000000000000000 0000000000000000 0000000000000000 0000000000000000 0000000000000000 0000000000000000 0000000000000000 0000000000000000 ZMM10=0000000000000000 0000000000000000 0000000000000000 0000000000000000 0000000000000000 0000000000000000 0000000000000000 0000000000000000 ZMM11=0000000000000000 0000000000000000 0000000000000000 0000000000000000 0000000000000000 0000000000000000 0000000000000000 0000000000000000 ZMM12=0000000000000000 0000000000000000 0000000000000000 0000000000000000 0000000000000000 0000000000000000 0000000000000000 0000000000000000 ZMM13=0000000000000000 0000000000000000 0000000000000000 0000000000000000 0000000000000000 0000000000000000 0000000000000000 0000000000000000 ZMM14=0000000000000000 0000000000000000 0000000000000000 0000000000000000 0000000000000000 0000000000000000 0000000000000000 0000000000000000 ZMM15=0000000000000000 0000000000000000 0000000000000000 0000000000000000 0000000000000000 0000000000000000 0000000000000000 0000000000000000 ZMM16=0000000000000000 0000000000000000 0000000000000000 0000000000000000 0000000000000000 0000000000000000 0000000000000000 0000000000000000 ZMM17=0000000000000000 0000000000000000 0000000000000000 0000000000000000 00007f69a93ed600 00007f69a93ed5e0 00007f69a93ed5e8 00007f69a93ed618 ZMM18=0000000000000000 0000000000000000 0000000000000000 0000000000000000 00007f69a9f4d020 00007f69a93ed5c0 00007f69a93ed5d0 00007f69a93ed610 ZMM19=0000000000000000 0000000000000000 0000000000000000 0000000000000000 00007f69a93ed5f8 00007f69a93ed5c8 00007f69a93ed600 00007f69a93ed5e0 ZMM20=0000000000000000 0000000000000000 0000000000000000 0000000000000000 0000000000000000 0000000000000000 0000000000000000 0000000000000000 ZMM21=0000000000000000 0000000000000000 0000000000000000 0000000000000000 5e21a3d6ffff0000 009fe423c0000000 0000000000000000 0000000000000000 ZMM22=0000000000000000 0000000000000000 0000000000000000 0000000000000000 0000000000000000 0000000000000000 0000000000000000 0000000000000000 ZMM23=0000000000000000 0000000000000000 0000000000000000 0000000000000000 0000000000000000 0000000000000000 0000000000000000 0000000000000000 ZMM24=0000000000000000 0000000000000000 0000000000000000 0000000000000000 0000000000000000 0000000000000000 0000000000000000 0000000000000000 ZMM25=0000000000000000 0000000000000000 0000000000000000 0000000000000000 0000000000000000 0000000000000000 0000000000000000 0000000000000000 ZMM26=0000000000000000 0000000000000000 0000000000000000 0000000000000000 0000000000000000 0000000000000000 0000000000000000 0000000000000000 ZMM27=0000000000000000 0000000000000000 0000000000000000 0000000000000000 0000000000000000 0000000000000000 0000000000000000 0000000000000000 ZMM28=0000000000000000 0000000000000000 0000000000000000 0000000000000000 0000000000000000 0000000000000000 0000000000000000 0000000000000000 ZMM29=0000000000000000 0000000000000000 0000000000000000 0000000000000000 0000000000000000 0000000000000000 0000000000000000 0000000000000000 ZMM30=0000000000000000 0000000000000000 0000000000000000 0000000000000000 0000000000000000 0000000000000000 0000000000000000 0000000000000000 ZMM31=0000000000000000 0000000000000000 0000000000000000 0000000000000000 0000000000000000 0000000000000000 0000000000000000 0000000000000000