Warning: Permanently added '10.128.1.191' (ED25519) to the list of known hosts. 1970/01/01 00:01:00 ignoring optional flag "type"="gce" 1970/01/01 00:01:00 parsed 1 programs [ 62.145856][ T4334] Adding 124996k swap on ./swap-file. Priority:0 extents:1 across:124996k SSFS [ 63.359496][ T1611] wlan0: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 63.360837][ T1611] wlan0: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 63.362354][ T1611] IPv6: ADDRCONF(NETDEV_CHANGE): wlan0: link becomes ready [ 63.370625][ T1611] wlan1: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 63.371965][ T1611] wlan1: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 63.373464][ T1611] IPv6: ADDRCONF(NETDEV_CHANGE): wlan1: link becomes ready [ 63.853040][ T4503] chnl_net:caif_netlink_parms(): no params data found [ 63.872865][ T4503] bridge0: port 1(bridge_slave_0) entered blocking state [ 63.874029][ T4503] bridge0: port 1(bridge_slave_0) entered disabled state [ 63.875775][ T4503] device bridge_slave_0 entered promiscuous mode [ 63.878414][ T4503] bridge0: port 2(bridge_slave_1) entered blocking state [ 63.879647][ T4503] bridge0: port 2(bridge_slave_1) entered disabled state [ 63.881303][ T4503] device bridge_slave_1 entered promiscuous mode [ 63.890052][ T4503] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 63.893227][ T4503] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 63.901685][ T4503] team0: Port device team_slave_0 added [ 63.903657][ T4503] team0: Port device team_slave_1 added [ 63.910657][ T4503] batman_adv: batadv0: Adding interface: batadv_slave_0 [ 63.911835][ T4503] batman_adv: batadv0: The MTU of interface batadv_slave_0 is too small (1500) to handle the transport of batman-adv packets. Packets going over this interface will be fragmented on layer2 which could impact the performance. Setting the MTU to 1560 would solve the problem. [ 63.916425][ T4503] batman_adv: batadv0: Not using interface batadv_slave_0 (retrying later): interface not active [ 63.918927][ T4503] batman_adv: batadv0: Adding interface: batadv_slave_1 [ 63.920016][ T4503] batman_adv: batadv0: The MTU of interface batadv_slave_1 is too small (1500) to handle the transport of batman-adv packets. Packets going over this interface will be fragmented on layer2 which could impact the performance. Setting the MTU to 1560 would solve the problem. [ 63.923980][ T4503] batman_adv: batadv0: Not using interface batadv_slave_1 (retrying later): interface not active [ 64.005728][ T4503] device hsr_slave_0 entered promiscuous mode [ 64.044819][ T4503] device hsr_slave_1 entered promiscuous mode [ 64.762176][ T4503] netdevsim netdevsim0 netdevsim0: renamed from eth0 [ 64.797763][ T4503] netdevsim netdevsim0 netdevsim1: renamed from eth1 [ 64.815778][ T4503] netdevsim netdevsim0 netdevsim2: renamed from eth2 [ 64.847818][ T4503] netdevsim netdevsim0 netdevsim3: renamed from eth3 [ 64.902503][ T4503] 8021q: adding VLAN 0 to HW filter on device bond0 [ 64.907756][ T563] IPv6: ADDRCONF(NETDEV_CHANGE): veth1: link becomes ready [ 64.909547][ T563] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 64.912519][ T4503] 8021q: adding VLAN 0 to HW filter on device team0 [ 64.916406][ T563] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bridge: link becomes ready [ 64.918634][ T563] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 64.920065][ T563] bridge0: port 1(bridge_slave_0) entered blocking state [ 64.921267][ T563] bridge0: port 1(bridge_slave_0) entered forwarding state [ 64.923140][ T563] IPv6: ADDRCONF(NETDEV_CHANGE): bridge0: link becomes ready [ 64.926863][ T563] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bridge: link becomes ready [ 64.928504][ T563] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 64.930159][ T563] bridge0: port 2(bridge_slave_1) entered blocking state [ 64.931244][ T563] bridge0: port 2(bridge_slave_1) entered forwarding state [ 64.933912][ T563] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bond: link becomes ready [ 64.938805][ T563] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bond: link becomes ready [ 64.940789][ T563] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_team: link becomes ready [ 64.943024][ T563] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 64.949060][ T4503] hsr0: Slave A (hsr_slave_0) is not up; please bring it up to get a fully working HSR network [ 64.950761][ T4503] hsr0: Slave B (hsr_slave_1) is not up; please bring it up to get a fully working HSR network [ 64.954034][ T563] IPv6: ADDRCONF(NETDEV_CHANGE): team0: link becomes ready [ 64.956873][ T563] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_team: link becomes ready [ 64.958703][ T563] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 64.960292][ T563] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_hsr: link becomes ready [ 64.961844][ T563] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 64.963428][ T563] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_hsr: link becomes ready [ 64.965469][ T563] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 64.969191][ T563] IPv6: ADDRCONF(NETDEV_CHANGE): hsr0: link becomes ready [ 65.008388][ T4503] 8021q: adding VLAN 0 to HW filter on device batadv0 [ 65.015162][ T1611] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan1: link becomes ready [ 65.016531][ T1611] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan0: link becomes ready [ 65.017775][ T1611] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_virt_wifi: link becomes ready [ 65.019525][ T1611] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_virt_wifi: link becomes ready [ 65.026945][ T1611] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_vlan: link becomes ready [ 65.028514][ T1611] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_vlan: link becomes ready [ 65.030545][ T1611] IPv6: ADDRCONF(NETDEV_CHANGE): vlan0: link becomes ready [ 65.032059][ T1611] IPv6: ADDRCONF(NETDEV_CHANGE): vlan1: link becomes ready [ 65.036553][ T4503] device veth0_vlan entered promiscuous mode [ 65.040130][ T4503] device veth1_vlan entered promiscuous mode [ 65.048915][ T563] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan0: link becomes ready [ 65.050597][ T563] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan1: link becomes ready [ 65.052117][ T563] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_macvtap: link becomes ready [ 65.053664][ T563] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_macvtap: link becomes ready [ 65.057854][ T4503] device veth0_macvtap entered promiscuous mode [ 65.060335][ T4503] device veth1_macvtap entered promiscuous mode [ 65.066134][ T4503] batman_adv: batadv0: Interface activated: batadv_slave_0 [ 65.067366][ T563] IPv6: ADDRCONF(NETDEV_CHANGE): macvtap0: link becomes ready [ 65.068912][ T563] IPv6: ADDRCONF(NETDEV_CHANGE): macsec0: link becomes ready [ 65.070404][ T563] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_0: link becomes ready [ 65.072487][ T563] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_batadv: link becomes ready [ 65.077722][ T4503] batman_adv: batadv0: Interface activated: batadv_slave_1 [ 65.080083][ T563] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_1: link becomes ready [ 65.082112][ T563] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_batadv: link becomes ready [ 65.084193][ T4503] netdevsim netdevsim0 netdevsim0: set [1, 0] type 2 family 0 port 6081 - 0 [ 65.086164][ T4503] netdevsim netdevsim0 netdevsim1: set [1, 0] type 2 family 0 port 6081 - 0 [ 65.087537][ T4503] netdevsim netdevsim0 netdevsim2: set [1, 0] type 2 family 0 port 6081 - 0 [ 65.089023][ T4503] netdevsim netdevsim0 netdevsim3: set [1, 0] type 2 family 0 port 6081 - 0 1970/01/01 00:01:05 executed programs: 0 [ 65.218490][ T4646] chnl_net:caif_netlink_parms(): no params data found [ 65.239653][ T4646] bridge0: port 1(bridge_slave_0) entered blocking state [ 65.240861][ T4646] bridge0: port 1(bridge_slave_0) entered disabled state [ 65.242492][ T4646] device bridge_slave_0 entered promiscuous mode [ 65.245128][ T4646] bridge0: port 2(bridge_slave_1) entered blocking state [ 65.246315][ T4646] bridge0: port 2(bridge_slave_1) entered disabled state [ 65.247893][ T4646] device bridge_slave_1 entered promiscuous mode [ 65.255952][ T4646] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 65.258440][ T4646] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 65.266902][ T4646] team0: Port device team_slave_0 added [ 65.268821][ T4646] team0: Port device team_slave_1 added [ 65.275513][ T4646] batman_adv: batadv0: Adding interface: batadv_slave_0 [ 65.276584][ T4646] batman_adv: batadv0: The MTU of interface batadv_slave_0 is too small (1500) to handle the transport of batman-adv packets. Packets going over this interface will be fragmented on layer2 which could impact the performance. Setting the MTU to 1560 would solve the problem. [ 65.280767][ T4646] batman_adv: batadv0: Not using interface batadv_slave_0 (retrying later): interface not active [ 65.283085][ T4646] batman_adv: batadv0: Adding interface: batadv_slave_1 [ 65.284184][ T4646] batman_adv: batadv0: The MTU of interface batadv_slave_1 is too small (1500) to handle the transport of batman-adv packets. Packets going over this interface will be fragmented on layer2 which could impact the performance. Setting the MTU to 1560 would solve the problem. [ 65.288772][ T4646] batman_adv: batadv0: Not using interface batadv_slave_1 (retrying later): interface not active [ 65.326282][ T4646] device hsr_slave_0 entered promiscuous mode [ 65.376233][ T4646] device hsr_slave_1 entered promiscuous mode [ 65.405031][ T4646] debugfs: Directory 'hsr0' with parent 'hsr' already present! [ 65.406299][ T4646] Cannot create hsr debugfs directory [ 65.439234][ T4646] netdevsim netdevsim0 netdevsim3 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 67.214752][ T4602] Bluetooth: hci0: command 0x0409 tx timeout [ 68.617874][ T4646] netdevsim netdevsim0 netdevsim2 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 69.294638][ T4154] Bluetooth: hci0: command 0x041b tx timeout [ 69.615583][ T25] cfg80211: failed to load regulatory.db [ 69.625705][ T2064] ieee802154 phy0 wpan0: encryption failed: -22 [ 69.626869][ T2064] ieee802154 phy1 wpan1: encryption failed: -22 [ 71.287392][ T4646] netdevsim netdevsim0 netdevsim1 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 71.352169][ T4646] netdevsim netdevsim0 netdevsim0 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 71.374620][ T4147] Bluetooth: hci0: command 0x040f tx timeout [ 71.511202][ T4646] netdevsim netdevsim0 netdevsim0: renamed from eth0 [ 71.526309][ T4646] netdevsim netdevsim0 netdevsim1: renamed from eth1 [ 71.565641][ T4646] netdevsim netdevsim0 netdevsim2: renamed from eth2 [ 71.615909][ T4646] netdevsim netdevsim0 netdevsim3: renamed from eth3 [ 71.689409][ T4646] 8021q: adding VLAN 0 to HW filter on device bond0 [ 71.695624][ T4646] 8021q: adding VLAN 0 to HW filter on device team0 [ 71.700138][ T148] IPv6: ADDRCONF(NETDEV_CHANGE): veth1: link becomes ready [ 71.701773][ T148] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 71.703182][ T148] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bridge: link becomes ready [ 71.705104][ T148] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 71.706511][ T148] bridge0: port 1(bridge_slave_0) entered blocking state [ 71.707618][ T148] bridge0: port 1(bridge_slave_0) entered forwarding state [ 71.709105][ T148] IPv6: ADDRCONF(NETDEV_CHANGE): bridge0: link becomes ready [ 71.716672][ T265] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bridge: link becomes ready [ 71.718350][ T265] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 71.719894][ T265] bridge0: port 2(bridge_slave_1) entered blocking state [ 71.720995][ T265] bridge0: port 2(bridge_slave_1) entered forwarding state [ 71.723469][ T148] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bond: link becomes ready [ 71.726584][ T265] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bond: link becomes ready [ 71.729880][ T148] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_team: link becomes ready [ 71.731839][ T148] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 71.733601][ T148] IPv6: ADDRCONF(NETDEV_CHANGE): team0: link becomes ready [ 71.738473][ T265] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_team: link becomes ready [ 71.740159][ T265] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 71.742889][ T148] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_hsr: link becomes ready [ 71.744330][ T148] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 71.748483][ T265] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_hsr: link becomes ready [ 71.750135][ T265] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 71.752195][ T4646] IPv6: ADDRCONF(NETDEV_CHANGE): hsr0: link becomes ready [ 71.790791][ T148] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan1: link becomes ready [ 71.792190][ T148] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan0: link becomes ready [ 71.795864][ T4646] 8021q: adding VLAN 0 to HW filter on device batadv0 [ 71.801964][ T148] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_virt_wifi: link becomes ready [ 71.803441][ T148] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_virt_wifi: link becomes ready [ 71.809663][ T148] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_vlan: link becomes ready [ 71.811180][ T148] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_vlan: link becomes ready [ 71.812758][ T148] IPv6: ADDRCONF(NETDEV_CHANGE): vlan0: link becomes ready [ 71.814141][ T148] IPv6: ADDRCONF(NETDEV_CHANGE): vlan1: link becomes ready [ 71.818164][ T4646] device veth0_vlan entered promiscuous mode [ 71.825503][ T4646] device veth1_vlan entered promiscuous mode [ 71.832722][ T148] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_macvtap: link becomes ready [ 71.834327][ T148] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_macvtap: link becomes ready [ 71.838564][ T4646] device veth0_macvtap entered promiscuous mode [ 71.840957][ T4646] device veth1_macvtap entered promiscuous mode [ 71.849723][ T4646] batman_adv: The newly added mac address (aa:aa:aa:aa:aa:3e) already exists on: batadv_slave_0 [ 71.851603][ T4646] batman_adv: It is strongly recommended to keep mac addresses unique to avoid problems! [ 71.853815][ T4646] batman_adv: batadv0: Interface activated: batadv_slave_0 [ 71.856168][ T148] IPv6: ADDRCONF(NETDEV_CHANGE): macvtap0: link becomes ready [ 71.857722][ T148] IPv6: ADDRCONF(NETDEV_CHANGE): macsec0: link becomes ready [ 71.859135][ T148] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_0: link becomes ready [ 71.860680][ T148] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_batadv: link becomes ready [ 71.862406][ T4646] batman_adv: The newly added mac address (aa:aa:aa:aa:aa:3f) already exists on: batadv_slave_1 [ 71.864186][ T4646] batman_adv: It is strongly recommended to keep mac addresses unique to avoid problems! [ 71.867117][ T4646] batman_adv: batadv0: Interface activated: batadv_slave_1 [ 71.868834][ T148] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_1: link becomes ready [ 71.870537][ T148] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_batadv: link becomes ready [ 71.872847][ T4646] netdevsim netdevsim0 netdevsim0: set [1, 0] type 2 family 0 port 6081 - 0 [ 71.874272][ T4646] netdevsim netdevsim0 netdevsim1: set [1, 0] type 2 family 0 port 6081 - 0 [ 71.875857][ T4646] netdevsim netdevsim0 netdevsim2: set [1, 0] type 2 family 0 port 6081 - 0 [ 71.877152][ T4646] netdevsim netdevsim0 netdevsim3: set [1, 0] type 2 family 0 port 6081 - 0 [ 71.893644][ T148] wlan0: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 71.896283][ T148] wlan0: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 71.898977][ T136] device hsr_slave_0 left promiscuous mode [ 71.954793][ T136] device hsr_slave_1 left promiscuous mode [ 72.044632][ T136] batman_adv: batadv0: Interface deactivated: batadv_slave_0 [ 72.045872][ T136] batman_adv: batadv0: Removing interface: batadv_slave_0 [ 72.047307][ T136] batman_adv: batadv0: Interface deactivated: batadv_slave_1 [ 72.048492][ T136] batman_adv: batadv0: Removing interface: batadv_slave_1 [ 72.049915][ T136] device bridge_slave_1 left promiscuous mode [ 72.051047][ T136] bridge0: port 2(bridge_slave_1) entered disabled state [ 72.095174][ T136] device bridge_slave_0 left promiscuous mode [ 72.096330][ T136] bridge0: port 1(bridge_slave_0) entered disabled state [ 72.224795][ T136] device veth1_macvtap left promiscuous mode [ 72.225936][ T136] device veth0_macvtap left promiscuous mode [ 72.226943][ T136] device veth1_vlan left promiscuous mode [ 72.227976][ T136] device veth0_vlan left promiscuous mode [ 72.315895][ T136] team0 (unregistering): Port device team_slave_1 removed [ 72.320008][ T136] team0 (unregistering): Port device team_slave_0 removed [ 72.323826][ T136] bond0 (unregistering): (slave bond_slave_1): Releasing backup interface [ 72.338126][ T136] bond0 (unregistering): (slave bond_slave_0): Releasing backup interface [ 72.467879][ T136] bond0 (unregistering): Released all slaves [ 72.597930][ T265] IPv6: ADDRCONF(NETDEV_CHANGE): wlan0: link becomes ready [ 72.608107][ T148] wlan1: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 72.609461][ T148] wlan1: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 72.610776][ T148] IPv6: ADDRCONF(NETDEV_CHANGE): wlan1: link becomes ready 1970/01/01 00:01:12 executed programs: 2 [ 72.725718][ T4889] loop0: detected capacity change from 0 to 32768 [ 72.791430][ T4889] BTRFS: device fsid ed167579-eb65-4e76-9a50-61ac97e9b59d devid 1 transid 8 /dev/loop0 scanned by syz.0.15 (4889) [ 72.804277][ T4889] BTRFS info (device loop0): using sha256 (sha256-ce) checksum algorithm [ 72.806061][ T4889] BTRFS info (device loop0): setting nodatacow, compression disabled [ 72.807445][ T4889] BTRFS info (device loop0): setting datacow [ 72.808541][ T4889] BTRFS info (device loop0): doing ref verification [ 72.809593][ T4889] BTRFS info (device loop0): force clearing of disk cache [ 72.810792][ T4889] BTRFS info (device loop0): turning off barriers [ 72.811968][ T4889] BTRFS info (device loop0): use zlib compression, level 3 [ 72.813157][ T4889] BTRFS info (device loop0): using free space tree [ 72.814140][ T4889] BTRFS info (device loop0): has skinny extents [ 72.831136][ T4889] BTRFS info (device loop0): clearing free space tree [ 72.832525][ T4889] BTRFS info (device loop0): clearing compat-ro feature flag for FREE_SPACE_TREE (0x1) [ 72.834019][ T4889] BTRFS info (device loop0): clearing compat-ro feature flag for FREE_SPACE_TREE_VALID (0x2) [ 72.842123][ T4889] BTRFS info (device loop0): creating free space tree [ 72.843999][ T4889] BTRFS info (device loop0): setting compat-ro feature flag for FREE_SPACE_TREE (0x1) [ 72.847269][ T4889] BTRFS info (device loop0): setting compat-ro feature flag for FREE_SPACE_TREE_VALID (0x2) [ 72.854309][ T4889] FAULT_INJECTION: forcing a failure. [ 72.854309][ T4889] name failslab, interval 1, probability 0, space 0, times 1 [ 72.858588][ T4889] CPU: 1 PID: 4889 Comm: syz.0.15 Not tainted syzkaller #0 [ 72.859655][ T4889] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/26/2026 [ 72.861312][ T4889] Call trace: [ 72.861854][ T4889] dump_backtrace+0x0/0x458 [ 72.862590][ T4889] show_stack+0x2c/0x3c [ 72.863249][ T4889] __dump_stack+0x30/0x40 [ 72.863977][ T4889] dump_stack_lvl+0xf4/0x15c [ 72.864767][ T4889] dump_stack+0x1c/0x5c [ 72.865472][ T4889] should_fail+0x3bc/0x514 [ 72.866190][ T4889] __should_failslab+0xbc/0x10c [ 72.866912][ T4889] should_failslab+0x10/0x28 [ 72.867618][ T4889] slab_pre_alloc_hook+0x64/0xe8 [ 72.868402][ T4889] kmem_cache_alloc+0x94/0x3d4 [ 72.869194][ T4889] btrfs_alloc_path+0x5c/0x68 [ 72.869957][ T4889] btrfs_insert_dir_item+0x184/0x3e8 [ 72.870786][ T4889] btrfs_add_link+0x2b0/0xa9c [ 72.871565][ T4889] btrfs_create+0x468/0x514 [ 72.872390][ T4889] path_openat+0xe18/0x2718 [ 72.873123][ T4889] do_filp_open+0x184/0x368 [ 72.873922][ T4889] do_sys_openat2+0x134/0x3f4 [ 72.874754][ T4889] __arm64_sys_openat+0x118/0x14c [ 72.875652][ T4889] invoke_syscall+0x98/0x2b0 [ 72.876396][ T4889] el0_svc_common+0x138/0x258 [ 72.877146][ T4889] do_el0_svc+0x58/0x13c [ 72.877826][ T4889] el0_svc+0x78/0x1d0 [ 72.878537][ T4889] el0t_64_sync_handler+0xcc/0xe4 [ 72.879325][ T4889] el0t_64_sync+0x1a0/0x1a4 [ 72.881993][ T4889] ------------[ cut here ]------------ [ 72.882961][ T4889] WARNING: CPU: 1 PID: 4889 at fs/btrfs/inode.c:6776 btrfs_add_link+0x718/0xa9c [ 72.884322][ T4889] Modules linked in: [ 72.884972][ T4889] CPU: 1 PID: 4889 Comm: syz.0.15 Not tainted syzkaller #0 [ 72.886166][ T4889] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/26/2026 [ 72.887798][ T4889] pstate: 62400005 (nZCv daif +PAN -UAO +TCO -DIT -SSBS BTYPE=--) [ 72.889053][ T4889] pc : btrfs_add_link+0x718/0xa9c [ 72.889845][ T4889] lr : btrfs_add_link+0x718/0xa9c [ 72.890664][ T4889] sp : ffff80001f497580 [ 72.891414][ T4889] x29: ffff80001f497680 x28: ffff0000de53e210 x27: 0000000000000108 [ 72.892726][ T4889] x26: 00000000fffffff4 x25: 0000000000000000 x24: dfff800000000000 [ 72.894047][ T4889] x23: 0000000000000014 x22: 1fffe0001bca7c4d x21: ffff700003e92eb8 [ 72.895307][ T4889] x20: 00000000fffffff4 x19: ffff0000de53e268 x18: 0000000000000001 [ 72.896600][ T4889] x17: 0000000000000000 x16: ffff800011255484 x15: 00000000ffffffff [ 72.897968][ T4889] x14: 0000000000000001 x13: 1fffe000341f49ab x12: 0000000000ff0100 [ 72.899375][ T4889] x11: 0000000000000000 x10: 0000000000000000 x9 : f0a7aaca1710a700 [ 72.900687][ T4889] x8 : f0a7aaca1710a700 x7 : 0000000000000001 x6 : 0000000000000001 [ 72.902005][ T4889] x5 : ffff80001f496e98 x4 : ffff80001436f3e0 x3 : ffff800008508fa8 [ 72.903311][ T4889] x2 : 0000000000000001 x1 : 0000000100000000 x0 : 0000000000000026 [ 72.904659][ T4889] Call trace: [ 72.905200][ T4889] btrfs_add_link+0x718/0xa9c [ 72.905985][ T4889] btrfs_create+0x468/0x514 [ 72.906746][ T4889] path_openat+0xe18/0x2718 [ 72.907493][ T4889] do_filp_open+0x184/0x368 [ 72.908192][ T4889] do_sys_openat2+0x134/0x3f4 [ 72.908936][ T4889] __arm64_sys_openat+0x118/0x14c [ 72.909745][ T4889] invoke_syscall+0x98/0x2b0 [ 72.910478][ T4889] el0_svc_common+0x138/0x258 [ 72.911255][ T4889] do_el0_svc+0x58/0x13c [ 72.911981][ T4889] el0_svc+0x78/0x1d0 [ 72.912654][ T4889] el0t_64_sync_handler+0xcc/0xe4 [ 72.913441][ T4889] el0t_64_sync+0x1a0/0x1a4 [ 72.914141][ T4889] irq event stamp: 82972 [ 72.914832][ T4889] hardirqs last enabled at (82971): [] __up_console_sem+0xb4/0xfc [ 72.916457][ T4889] hardirqs last disabled at (82972): [] el1_dbg+0x24/0x80 [ 72.917950][ T4889] softirqs last enabled at (82952): [] handle_softirqs+0xa40/0xbe4 [ 72.919589][ T4889] softirqs last disabled at (82901): [] __irq_exit_rcu+0x240/0x43c [ 72.921139][ T4889] ---[ end trace 9d3a0ca7cd6df5dc ]--- [ 72.927659][ T4889] BTRFS: error (device loop0) in btrfs_add_link:6776: errno=-12 Out of memory [ 72.929082][ T4889] BTRFS info (device loop0): forced readonly [ 73.123381][ T4914] loop0: detected capacity change from 0 to 32768 [ 73.174769][ T4914] BTRFS: device fsid ed167579-eb65-4e76-9a50-61ac97e9b59d devid 1 transid 8 /dev/loop0 scanned by syz.0.16 (4914) [ 73.178546][ T4914] BTRFS info (device loop0): using sha256 (sha256-ce) checksum algorithm [ 73.180004][ T4914] BTRFS info (device loop0): setting nodatacow, compression disabled [ 73.181452][ T4914] BTRFS info (device loop0): setting datacow [ 73.182451][ T4914] BTRFS info (device loop0): doing ref verification [ 73.183559][ T4914] BTRFS info (device loop0): force clearing of disk cache [ 73.185533][ T4914] BTRFS info (device loop0): turning off barriers [ 73.186671][ T4914] BTRFS info (device loop0): use zlib compression, level 3 [ 73.187890][ T4914] BTRFS info (device loop0): using free space tree [ 73.188875][ T4914] BTRFS info (device loop0): has skinny extents [ 73.199086][ T4914] BTRFS info (device loop0): clearing free space tree [ 73.200364][ T4914] BTRFS info (device loop0): clearing compat-ro feature flag for FREE_SPACE_TREE (0x1) [ 73.201899][ T4914] BTRFS info (device loop0): clearing compat-ro feature flag for FREE_SPACE_TREE_VALID (0x2) [ 73.206660][ T4914] BTRFS info (device loop0): creating free space tree [ 73.208079][ T4914] BTRFS info (device loop0): setting compat-ro feature flag for FREE_SPACE_TREE (0x1) [ 73.209541][ T4914] BTRFS info (device loop0): setting compat-ro feature flag for FREE_SPACE_TREE_VALID (0x2) [ 73.214311][ T4914] FAULT_INJECTION: forcing a failure. [ 73.214311][ T4914] name failslab, interval 1, probability 0, space 0, times 0 [ 73.217508][ T4914] CPU: 1 PID: 4914 Comm: syz.0.16 Tainted: G W syzkaller #0 [ 73.218748][ T4914] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/26/2026 [ 73.220279][ T4914] Call trace: [ 73.220764][ T4914] dump_backtrace+0x0/0x458 [ 73.221498][ T4914] show_stack+0x2c/0x3c [ 73.222109][ T4914] __dump_stack+0x30/0x40 [ 73.222752][ T4914] dump_stack_lvl+0xf4/0x15c [ 73.223446][ T4914] dump_stack+0x1c/0x5c [ 73.224077][ T4914] should_fail+0x3bc/0x514 [ 73.224912][ T4914] __should_failslab+0xbc/0x10c [ 73.225740][ T4914] should_failslab+0x10/0x28 [ 73.226482][ T4914] slab_pre_alloc_hook+0x64/0xe8 [ 73.227314][ T4914] kmem_cache_alloc+0x94/0x3d4 [ 73.228122][ T4914] btrfs_alloc_path+0x5c/0x68 [ 73.228892][ T4914] btrfs_insert_dir_item+0x184/0x3e8 [ 73.229748][ T4914] btrfs_add_link+0x2b0/0xa9c [ 73.230479][ T4914] btrfs_create+0x468/0x514 [ 73.231248][ T4914] path_openat+0xe18/0x2718 [ 73.231986][ T4914] do_filp_open+0x184/0x368 [ 73.232696][ T4914] do_sys_openat2+0x134/0x3f4 [ 73.233416][ T4914] __arm64_sys_openat+0x118/0x14c [ 73.234233][ T4914] invoke_syscall+0x98/0x2b0 [ 73.234940][ T4914] el0_svc_common+0x138/0x258 [ 73.235678][ T4914] do_el0_svc+0x58/0x13c [ 73.236337][ T4914] el0_svc+0x78/0x1d0 [ 73.236987][ T4914] el0t_64_sync_handler+0xcc/0xe4 [ 73.237745][ T4914] el0t_64_sync+0x1a0/0x1a4 [ 73.240074][ T4914] ------------[ cut here ]------------ [ 73.241004][ T4914] WARNING: CPU: 1 PID: 4914 at fs/btrfs/inode.c:6776 btrfs_add_link+0x718/0xa9c [ 73.242319][ T4914] Modules linked in: [ 73.242875][ T4914] CPU: 1 PID: 4914 Comm: syz.0.16 Tainted: G W syzkaller #0 [ 73.244268][ T4914] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/26/2026 [ 73.245755][ T4914] pstate: 62400005 (nZCv daif +PAN -UAO +TCO -DIT -SSBS BTYPE=--) [ 73.247077][ T4914] pc : btrfs_add_link+0x718/0xa9c [ 73.247880][ T4914] lr : btrfs_add_link+0x718/0xa9c [ 73.248746][ T4914] sp : ffff80001f497580 [ 73.249454][ T4914] x29: ffff80001f497680 x28: ffff0000de53e4d0 x27: 0000000000000108 [ 73.250776][ T4914] x26: 00000000fffffff4 x25: 0000000000000000 x24: dfff800000000000 [ 73.252059][ T4914] x23: 0000000000000014 x22: 1fffe0001bca7ca5 x21: ffff700003e92eb8 [ 73.253376][ T4914] x20: 00000000fffffff4 x19: ffff0000de53e528 x18: 0000000000000001 [ 73.254796][ T4914] x17: 0000000000000000 x16: ffff800011255484 x15: 00000000ffffffff [ 73.256151][ T4914] x14: 0000000000000001 x13: 1fffe000341f49ab x12: 0000000000ff0100 [ 73.257422][ T4914] x11: 0000000000000000 x10: 0000000000000000 x9 : de72b80d8b40dd00 [ 73.258866][ T4914] x8 : de72b80d8b40dd00 x7 : 0000000000000001 x6 : 0000000000000001 [ 73.260255][ T4914] x5 : ffff80001f496e98 x4 : ffff80001436f3e0 x3 : ffff800008508fa8 [ 73.261568][ T4914] x2 : 0000000000000001 x1 : 0000000100000000 x0 : 0000000000000026 [ 73.262844][ T4914] Call trace: [ 73.263369][ T4914] btrfs_add_link+0x718/0xa9c [ 73.264121][ T4914] btrfs_create+0x468/0x514 [ 73.264916][ T4914] path_openat+0xe18/0x2718 [ 73.265675][ T4914] do_filp_open+0x184/0x368 [ 73.266432][ T4914] do_sys_openat2+0x134/0x3f4 [ 73.267182][ T4914] __arm64_sys_openat+0x118/0x14c [ 73.268035][ T4914] invoke_syscall+0x98/0x2b0 [ 73.268825][ T4914] el0_svc_common+0x138/0x258 [ 73.269602][ T4914] do_el0_svc+0x58/0x13c [ 73.270294][ T4914] el0_svc+0x78/0x1d0 [ 73.270986][ T4914] el0t_64_sync_handler+0xcc/0xe4 [ 73.271945][ T4914] el0t_64_sync+0x1a0/0x1a4 [ 73.272725][ T4914] irq event stamp: 80032 [ 73.273470][ T4914] hardirqs last enabled at (80031): [] __up_console_sem+0xb4/0xfc [ 73.275137][ T4914] hardirqs last disabled at (80032): [] el1_dbg+0x24/0x80 [ 73.276600][ T4914] softirqs last enabled at (80012): [] handle_softirqs+0xa40/0xbe4 [ 73.278175][ T4914] softirqs last disabled at (79935): [] __irq_exit_rcu+0x240/0x43c [ 73.279696][ T4914] ---[ end trace 9d3a0ca7cd6df5dd ]--- [ 73.282742][ T4914] BTRFS: error (device loop0) in btrfs_add_link:6776: errno=-12 Out of memory [ 73.284277][ T4914] BTRFS info (device loop0): forced readonly [ 73.455247][ T4118] Bluetooth: hci0: command 0x0419 tx timeout [ 73.479968][ T4937] loop0: detected capacity change from 0 to 32768 [ 73.516661][ T4937] BTRFS: device fsid ed167579-eb65-4e76-9a50-61ac97e9b59d devid 1 transid 8 /dev/loop0 scanned by syz.0.17 (4937) [ 73.521982][ T4937] BTRFS info (device loop0): using sha256 (sha256-ce) checksum algorithm [ 73.523634][ T4937] BTRFS info (device loop0): setting nodatacow, compression disabled [ 73.525283][ T4937] BTRFS info (device loop0): setting datacow [ 73.526233][ T4937] BTRFS info (device loop0): doing ref verification [ 73.527256][ T4937] BTRFS info (device loop0): force clearing of disk cache [ 73.528314][ T4937] BTRFS info (device loop0): turning off barriers [ 73.529294][ T4937] BTRFS info (device loop0): use zlib compression, level 3 [ 73.530418][ T4937] BTRFS info (device loop0): using free space tree [ 73.531403][ T4937] BTRFS info (device loop0): has skinny extents [ 73.543086][ T4937] BTRFS info (device loop0): clearing free space tree [ 73.544200][ T4937] BTRFS info (device loop0): clearing compat-ro feature flag for FREE_SPACE_TREE (0x1) [ 73.546153][ T4937] BTRFS info (device loop0): clearing compat-ro feature flag for FREE_SPACE_TREE_VALID (0x2) [ 73.549364][ T4937] BTRFS info (device loop0): creating free space tree [ 73.550935][ T4937] BTRFS info (device loop0): setting compat-ro feature flag for FREE_SPACE_TREE (0x1) [ 73.552435][ T4937] BTRFS info (device loop0): setting compat-ro feature flag for FREE_SPACE_TREE_VALID (0x2) [ 73.558884][ T4937] FAULT_INJECTION: forcing a failure. [ 73.558884][ T4937] name failslab, interval 1, probability 0, space 0, times 0 [ 73.560956][ T4937] CPU: 0 PID: 4937 Comm: syz.0.17 Tainted: G W syzkaller #0 [ 73.562452][ T4937] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/26/2026 [ 73.563976][ T4937] Call trace: [ 73.564504][ T4937] dump_backtrace+0x0/0x458 [ 73.565301][ T4937] show_stack+0x2c/0x3c [ 73.565943][ T4937] __dump_stack+0x30/0x40 [ 73.566632][ T4937] dump_stack_lvl+0xf4/0x15c [ 73.567311][ T4937] dump_stack+0x1c/0x5c [ 73.568043][ T4937] should_fail+0x3bc/0x514 [ 73.568793][ T4937] __should_failslab+0xbc/0x10c [ 73.569606][ T4937] should_failslab+0x10/0x28 [ 73.570341][ T4937] slab_pre_alloc_hook+0x64/0xe8 [ 73.571163][ T4937] kmem_cache_alloc+0x94/0x3d4 [ 73.571990][ T4937] btrfs_get_or_create_delayed_node+0x114/0x4a8 [ 73.573057][ T4937] btrfs_delayed_update_inode+0x3c/0x1b68 [ 73.573965][ T4937] btrfs_update_inode+0x210/0x3d4 [ 73.574812][ T4937] btrfs_create+0x364/0x514 [ 73.575555][ T4937] path_openat+0xe18/0x2718 [ 73.576296][ T4937] do_filp_open+0x184/0x368 [ 73.576987][ T4937] do_sys_openat2+0x134/0x3f4 [ 73.577725][ T4937] __arm64_sys_openat+0x118/0x14c [ 73.578508][ T4937] invoke_syscall+0x98/0x2b0 [ 73.579228][ T4937] el0_svc_common+0x138/0x258 [ 73.579984][ T4937] do_el0_svc+0x58/0x13c [ 73.580711][ T4937] el0_svc+0x78/0x1d0 [ 73.581392][ T4937] el0t_64_sync_handler+0xcc/0xe4 [ 73.582222][ T4937] el0t_64_sync+0x1a0/0x1a4 [ 73.815328][ T4959] loop0: detected capacity change from 0 to 32768 [ 73.869495][ T4959] BTRFS: device fsid ed167579-eb65-4e76-9a50-61ac97e9b59d devid 1 transid 8 /dev/loop0 scanned by syz.0.18 (4959) [ 73.875947][ T4959] BTRFS info (device loop0): using sha256 (sha256-ce) checksum algorithm [ 73.877244][ T4959] BTRFS info (device loop0): setting nodatacow, compression disabled [ 73.878458][ T4959] BTRFS info (device loop0): setting datacow [ 73.879342][ T4959] BTRFS info (device loop0): doing ref verification [ 73.880417][ T4959] BTRFS info (device loop0): force clearing of disk cache [ 73.881478][ T4959] BTRFS info (device loop0): turning off barriers [ 73.894695][ T4959] BTRFS info (device loop0): use zlib compression, level 3 [ 73.895803][ T4959] BTRFS info (device loop0): using free space tree [ 73.896783][ T4959] BTRFS info (device loop0): has skinny extents [ 74.002953][ T4959] BTRFS info (device loop0): clearing free space tree [ 74.004137][ T4959] BTRFS info (device loop0): clearing compat-ro feature flag for FREE_SPACE_TREE (0x1) [ 74.006548][ T4959] BTRFS info (device loop0): clearing compat-ro feature flag for FREE_SPACE_TREE_VALID (0x2) [ 74.010325][ T4959] BTRFS info (device loop0): creating free space tree [ 74.011866][ T4959] BTRFS info (device loop0): setting compat-ro feature flag for FREE_SPACE_TREE (0x1) [ 74.013452][ T4959] BTRFS info (device loop0): setting compat-ro feature flag for FREE_SPACE_TREE_VALID (0x2) [ 74.018892][ T4959] FAULT_INJECTION: forcing a failure. [ 74.018892][ T4959] name failslab, interval 1, probability 0, space 0, times 0 [ 74.020890][ T4959] CPU: 0 PID: 4959 Comm: syz.0.18 Tainted: G W syzkaller #0 [ 74.022333][ T4959] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/26/2026 [ 74.023938][ T4959] Call trace: [ 74.024445][ T4959] dump_backtrace+0x0/0x458 [ 74.025224][ T4959] show_stack+0x2c/0x3c [ 74.025906][ T4959] __dump_stack+0x30/0x40 [ 74.026579][ T4959] dump_stack_lvl+0xf4/0x15c [ 74.027266][ T4959] dump_stack+0x1c/0x5c [ 74.028039][ T4959] should_fail+0x3bc/0x514 [ 74.028719][ T4959] __should_failslab+0xbc/0x10c [ 74.029519][ T4959] should_failslab+0x10/0x28 [ 74.030204][ T4959] slab_pre_alloc_hook+0x64/0xe8 [ 74.030971][ T4959] kmem_cache_alloc+0x94/0x3d4 [ 74.031694][ T4959] btrfs_alloc_path+0x5c/0x68 [ 74.032434][ T4959] btrfs_insert_dir_item+0x184/0x3e8 [ 74.033351][ T4959] btrfs_add_link+0x2b0/0xa9c [ 74.034141][ T4959] btrfs_create+0x468/0x514 [ 74.034877][ T4959] path_openat+0xe18/0x2718 [ 74.035533][ T4959] do_filp_open+0x184/0x368 [ 74.036208][ T4959] do_sys_openat2+0x134/0x3f4 [ 74.037000][ T4959] __arm64_sys_openat+0x118/0x14c [ 74.037678][ T4959] invoke_syscall+0x98/0x2b0 [ 74.038454][ T4959] el0_svc_common+0x138/0x258 [ 74.039245][ T4959] do_el0_svc+0x58/0x13c [ 74.039929][ T4959] el0_svc+0x78/0x1d0 [ 74.040591][ T4959] el0t_64_sync_handler+0xcc/0xe4 [ 74.041435][ T4959] el0t_64_sync+0x1a0/0x1a4 [ 74.042571][ T4959] ------------[ cut here ]------------ [ 74.043622][ T4959] WARNING: CPU: 0 PID: 4959 at fs/btrfs/inode.c:6776 btrfs_add_link+0x718/0xa9c [ 74.045085][ T4959] Modules linked in: [ 74.045726][ T4959] CPU: 0 PID: 4959 Comm: syz.0.18 Tainted: G W syzkaller #0 [ 74.047105][ T4959] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/26/2026 [ 74.048724][ T4959] pstate: 62400005 (nZCv daif +PAN -UAO +TCO -DIT -SSBS BTYPE=--) [ 74.049964][ T4959] pc : btrfs_add_link+0x718/0xa9c [ 74.050711][ T4959] lr : btrfs_add_link+0x718/0xa9c [ 74.051493][ T4959] sp : ffff80001f497580 [ 74.052112][ T4959] x29: ffff80001f497680 x28: ffff0000de596790 x27: 0000000000000108 [ 74.053449][ T4959] x26: 00000000fffffff4 x25: 0000000000000000 x24: dfff800000000000 [ 74.054630][ T4959] x23: 0000000000000014 x22: 1fffe0001bcb2cfd x21: ffff700003e92eb8 [ 74.055926][ T4959] x20: 00000000fffffff4 x19: ffff0000de5967e8 x18: 0000000000000001 [ 74.057322][ T4959] x17: 0000000000000000 x16: ffff800011255484 x15: 00000000ffffffff [ 74.058595][ T4959] x14: 0000000000000001 x13: 1fffe000341f07ab x12: 0000000000ff0100 [ 74.059825][ T4959] x11: 0000000000000000 x10: 0000000000000000 x9 : 90682abe0ac5d700 [ 74.061056][ T4959] x8 : 90682abe0ac5d700 x7 : 0000000000000001 x6 : 0000000000000001 [ 74.062287][ T4959] x5 : ffff80001f496e98 x4 : ffff80001436f3e0 x3 : ffff800008508fa8 [ 74.063507][ T4959] x2 : 0000000000000001 x1 : 0000000100000000 x0 : 0000000000000026 [ 74.064778][ T4959] Call trace: [ 74.065335][ T4959] btrfs_add_link+0x718/0xa9c [ 74.066097][ T4959] btrfs_create+0x468/0x514 [ 74.066858][ T4959] path_openat+0xe18/0x2718 [ 74.067605][ T4959] do_filp_open+0x184/0x368 [ 74.068345][ T4959] do_sys_openat2+0x134/0x3f4 [ 74.069061][ T4959] __arm64_sys_openat+0x118/0x14c [ 74.069942][ T4959] invoke_syscall+0x98/0x2b0 [ 74.070655][ T4959] el0_svc_common+0x138/0x258 [ 74.071451][ T4959] do_el0_svc+0x58/0x13c [ 74.072124][ T4959] el0_svc+0x78/0x1d0 [ 74.072784][ T4959] el0t_64_sync_handler+0xcc/0xe4 [ 74.073656][ T4959] el0t_64_sync+0x1a0/0x1a4 [ 74.074367][ T4959] irq event stamp: 79844 [ 74.075092][ T4959] hardirqs last enabled at (79843): [] __up_console_sem+0xb4/0xfc [ 74.076681][ T4959] hardirqs last disabled at (79844): [] el1_dbg+0x24/0x80 [ 74.078113][ T4959] softirqs last enabled at (79824): [] handle_softirqs+0xa40/0xbe4 [ 74.079612][ T4959] softirqs last disabled at (79801): [] __irq_exit_rcu+0x240/0x43c [ 74.081149][ T4959] ---[ end trace 9d3a0ca7cd6df5de ]--- [ 74.082589][ T4959] BTRFS: error (device loop0) in btrfs_add_link:6776: errno=-12 Out of memory [ 74.083997][ T4959] BTRFS info (device loop0): forced readonly [ 74.280389][ T4982] loop0: detected capacity change from 0 to 32768 [ 74.384643][ T4982] BTRFS: device fsid ed167579-eb65-4e76-9a50-61ac97e9b59d devid 1 transid 8 /dev/loop0 scanned by syz.0.19 (4982) [ 74.389276][ T4982] BTRFS info (device loop0): using sha256 (sha256-ce) checksum algorithm [ 74.390733][ T4982] BTRFS info (device loop0): setting nodatacow, compression disabled [ 74.391951][ T4982] BTRFS info (device loop0): setting datacow [ 74.392943][ T4982] BTRFS info (device loop0): doing ref verification [ 74.394073][ T4982] BTRFS info (device loop0): force clearing of disk cache [ 74.395953][ T4982] BTRFS info (device loop0): turning off barriers [ 74.397165][ T4982] BTRFS info (device loop0): use zlib compression, level 3 [ 74.398301][ T4982] BTRFS info (device loop0): using free space tree [ 74.399420][ T4982] BTRFS info (device loop0): has skinny extents [ 74.417888][ T4982] BTRFS info (device loop0): clearing free space tree [ 74.419205][ T4982] BTRFS info (device loop0): clearing compat-ro feature flag for FREE_SPACE_TREE (0x1) [ 74.420787][ T4982] BTRFS info (device loop0): clearing compat-ro feature flag for FREE_SPACE_TREE_VALID (0x2) [ 74.426346][ T4982] BTRFS info (device loop0): creating free space tree [ 74.428202][ T4982] BTRFS info (device loop0): setting compat-ro feature flag for FREE_SPACE_TREE (0x1) [ 74.429896][ T4982] BTRFS info (device loop0): setting compat-ro feature flag for FREE_SPACE_TREE_VALID (0x2) [ 74.434205][ T4982] FAULT_INJECTION: forcing a failure. [ 74.434205][ T4982] name failslab, interval 1, probability 0, space 0, times 0 [ 74.436575][ T4982] CPU: 1 PID: 4982 Comm: syz.0.19 Tainted: G W syzkaller #0 [ 74.437892][ T4982] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/26/2026 [ 74.439521][ T4982] Call trace: [ 74.440028][ T4982] dump_backtrace+0x0/0x458 [ 74.440780][ T4982] show_stack+0x2c/0x3c [ 74.441452][ T4982] __dump_stack+0x30/0x40 [ 74.442189][ T4982] dump_stack_lvl+0xf4/0x15c [ 74.442897][ T4982] dump_stack+0x1c/0x5c [ 74.443610][ T4982] should_fail+0x3bc/0x514 [ 74.444367][ T4982] __should_failslab+0xbc/0x10c [ 74.445176][ T4982] should_failslab+0x10/0x28 [ 74.445922][ T4982] slab_pre_alloc_hook+0x64/0xe8 [ 74.446738][ T4982] kmem_cache_alloc+0x94/0x3d4 [ 74.447526][ T4982] btrfs_get_or_create_delayed_node+0x114/0x4a8 [ 74.448595][ T4982] btrfs_delayed_update_inode+0x3c/0x1b68 [ 74.449471][ T4982] btrfs_update_inode+0x210/0x3d4 [ 74.450315][ T4982] btrfs_create+0x364/0x514 [ 74.451052][ T4982] path_openat+0xe18/0x2718 [ 74.451797][ T4982] do_filp_open+0x184/0x368 [ 74.452573][ T4982] do_sys_openat2+0x134/0x3f4 [ 74.453362][ T4982] __arm64_sys_openat+0x118/0x14c [ 74.454220][ T4982] invoke_syscall+0x98/0x2b0 [ 74.454935][ T4982] el0_svc_common+0x138/0x258 [ 74.455658][ T4982] do_el0_svc+0x58/0x13c [ 74.456370][ T4982] el0_svc+0x78/0x1d0 [ 74.457103][ T4982] el0t_64_sync_handler+0xcc/0xe4 [ 74.457932][ T4982] el0t_64_sync+0x1a0/0x1a4 [ 74.599253][ T5005] loop0: detected capacity change from 0 to 32768 [ 74.659372][ T5005] BTRFS: device fsid ed167579-eb65-4e76-9a50-61ac97e9b59d devid 1 transid 8 /dev/loop0 scanned by syz.0.20 (5005) [ 74.664528][ T5005] BTRFS info (device loop0): using sha256 (sha256-ce) checksum algorithm [ 74.666183][ T5005] BTRFS info (device loop0): setting nodatacow, compression disabled [ 74.667525][ T5005] BTRFS info (device loop0): setting datacow [ 74.668456][ T5005] BTRFS info (device loop0): doing ref verification [ 74.669494][ T5005] BTRFS info (device loop0): force clearing of disk cache [ 74.670619][ T5005] BTRFS info (device loop0): turning off barriers [ 74.671751][ T5005] BTRFS info (device loop0): use zlib compression, level 3 [ 74.672886][ T5005] BTRFS info (device loop0): using free space tree [ 74.673988][ T5005] BTRFS info (device loop0): has skinny extents [ 74.681762][ T5005] BTRFS info (device loop0): clearing free space tree [ 74.682835][ T5005] BTRFS info (device loop0): clearing compat-ro feature flag for FREE_SPACE_TREE (0x1) [ 74.684415][ T5005] BTRFS info (device loop0): clearing compat-ro feature flag for FREE_SPACE_TREE_VALID (0x2) [ 74.688787][ T5005] BTRFS info (device loop0): creating free space tree [ 74.690246][ T5005] BTRFS info (device loop0): setting compat-ro feature flag for FREE_SPACE_TREE (0x1) [ 74.691688][ T5005] BTRFS info (device loop0): setting compat-ro feature flag for FREE_SPACE_TREE_VALID (0x2) [ 74.697553][ T5005] FAULT_INJECTION: forcing a failure. [ 74.697553][ T5005] name failslab, interval 1, probability 0, space 0, times 0 [ 74.699471][ T5005] CPU: 0 PID: 5005 Comm: syz.0.20 Tainted: G W syzkaller #0 [ 74.700848][ T5005] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/26/2026 [ 74.702411][ T5005] Call trace: [ 74.702878][ T5005] dump_backtrace+0x0/0x458 [ 74.703669][ T5005] show_stack+0x2c/0x3c [ 74.704348][ T5005] __dump_stack+0x30/0x40 [ 74.705066][ T5005] dump_stack_lvl+0xf4/0x15c [ 74.705835][ T5005] dump_stack+0x1c/0x5c [ 74.706554][ T5005] should_fail+0x3bc/0x514 [ 74.707270][ T5005] __should_failslab+0xbc/0x10c [ 74.708078][ T5005] should_failslab+0x10/0x28 [ 74.708845][ T5005] slab_pre_alloc_hook+0x64/0xe8 [ 74.709653][ T5005] kmem_cache_alloc+0x94/0x3d4 [ 74.710419][ T5005] btrfs_get_or_create_delayed_node+0x114/0x4a8 [ 74.711423][ T5005] btrfs_delayed_update_inode+0x3c/0x1b68 [ 74.712329][ T5005] btrfs_update_inode+0x210/0x3d4 [ 74.713080][ T5005] btrfs_create+0x364/0x514 [ 74.713856][ T5005] path_openat+0xe18/0x2718 [ 74.714566][ T5005] do_filp_open+0x184/0x368 [ 74.715280][ T5005] do_sys_openat2+0x134/0x3f4 [ 74.716083][ T5005] __arm64_sys_openat+0x118/0x14c [ 74.716976][ T5005] invoke_syscall+0x98/0x2b0 [ 74.717770][ T5005] el0_svc_common+0x138/0x258 [ 74.718510][ T5005] do_el0_svc+0x58/0x13c [ 74.719216][ T5005] el0_svc+0x78/0x1d0 [ 74.719852][ T5005] el0t_64_sync_handler+0xcc/0xe4 [ 74.720609][ T5005] el0t_64_sync+0x1a0/0x1a4 [ 74.864367][ T5027] loop0: detected capacity change from 0 to 32768 [ 74.917337][ T5027] BTRFS: device fsid ed167579-eb65-4e76-9a50-61ac97e9b59d devid 1 transid 8 /dev/loop0 scanned by syz.0.21 (5027) [ 74.920647][ T5027] BTRFS info (device loop0): using sha256 (sha256-ce) checksum algorithm [ 74.922000][ T5027] BTRFS info (device loop0): setting nodatacow, compression disabled [ 74.923270][ T5027] BTRFS info (device loop0): setting datacow [ 74.924352][ T5027] BTRFS info (device loop0): doing ref verification [ 74.926150][ T5027] BTRFS info (device loop0): force clearing of disk cache [ 74.927357][ T5027] BTRFS info (device loop0): turning off barriers [ 74.928351][ T5027] BTRFS info (device loop0): use zlib compression, level 3 [ 74.943367][ T5027] FAULT_INJECTION: forcing a failure. [ 74.943367][ T5027] name failslab, interval 1, probability 0, space 0, times 0 [ 74.945458][ T5027] CPU: 0 PID: 5027 Comm: syz.0.21 Tainted: G W syzkaller #0 [ 74.946697][ T5027] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/26/2026 [ 74.948267][ T5027] Call trace: [ 74.948778][ T5027] dump_backtrace+0x0/0x458 [ 74.949424][ T5027] show_stack+0x2c/0x3c [ 74.950157][ T5027] __dump_stack+0x30/0x40 [ 74.950938][ T5027] dump_stack_lvl+0xf4/0x15c [ 74.951762][ T5027] dump_stack+0x1c/0x5c [ 74.952403][ T5027] should_fail+0x3bc/0x514 [ 74.953168][ T5027] __should_failslab+0xbc/0x10c [ 74.953913][ T5027] should_failslab+0x10/0x28 [ 74.954655][ T5027] slab_pre_alloc_hook+0x64/0xe8 [ 74.955463][ T5027] kmem_cache_alloc+0x94/0x3d4 [ 74.956222][ T5027] security_inode_alloc+0x38/0x11c [ 74.957040][ T5027] inode_init_always+0x670/0xa84 [ 74.957889][ T5027] new_inode_pseudo+0x7c/0x1fc [ 74.958658][ T5027] new_inode+0x38/0x174 [ 74.959312][ T5027] btrfs_new_inode+0x158/0x1564 [ 74.960111][ T5027] btrfs_create+0x24c/0x514 [ 74.960792][ T5027] path_openat+0xe18/0x2718 [ 74.961570][ T5027] do_filp_open+0x184/0x368 [ 74.962325][ T5027] do_sys_openat2+0x134/0x3f4 [ 74.963087][ T5027] __arm64_sys_openat+0x118/0x14c [ 74.963912][ T5027] invoke_syscall+0x98/0x2b0 [ 74.964658][ T5027] el0_svc_common+0x138/0x258 [ 74.965380][ T5027] do_el0_svc+0x58/0x13c [ 74.966072][ T5027] el0_svc+0x78/0x1d0 [ 74.966723][ T5027] el0t_64_sync_handler+0xcc/0xe4 [ 74.967529][ T5027] el0t_64_sync+0x1a0/0x1a4 [ 75.108924][ T5049] loop0: detected capacity change from 0 to 32768 [ 75.199199][ T5049] BTRFS: device fsid ed167579-eb65-4e76-9a50-61ac97e9b59d devid 1 transid 8 /dev/loop0 scanned by syz.0.22 (5049) [ 75.216478][ T5049] FAULT_INJECTION: forcing a failure. [ 75.216478][ T5049] name failslab, interval 1, probability 0, space 0, times 0 [ 75.218505][ T5049] CPU: 1 PID: 5049 Comm: syz.0.22 Tainted: G W syzkaller #0 [ 75.219872][ T5049] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/26/2026 [ 75.221410][ T5049] Call trace: [ 75.221958][ T5049] dump_backtrace+0x0/0x458 [ 75.222731][ T5049] show_stack+0x2c/0x3c [ 75.223457][ T5049] __dump_stack+0x30/0x40 [ 75.224192][ T5049] dump_stack_lvl+0xf4/0x15c [ 75.224972][ T5049] dump_stack+0x1c/0x5c [ 75.225661][ T5049] should_fail+0x3bc/0x514 [ 75.226427][ T5049] __should_failslab+0xbc/0x10c [ 75.227243][ T5049] should_failslab+0x10/0x28 [ 75.227982][ T5049] slab_pre_alloc_hook+0x64/0xe8 [ 75.228772][ T5049] kmem_cache_alloc+0x94/0x3d4 [ 75.229611][ T5049] btrfs_get_or_create_delayed_node+0x114/0x4a8 [ 75.230750][ T5049] btrfs_delayed_update_inode+0x3c/0x1b68 [ 75.231720][ T5049] btrfs_update_inode+0x210/0x3d4 [ 75.232594][ T5049] btrfs_create+0x364/0x514 [ 75.233351][ T5049] path_openat+0xe18/0x2718 [ 75.234123][ T5049] do_filp_open+0x184/0x368 [ 75.234882][ T5049] do_sys_openat2+0x134/0x3f4 [ 75.235625][ T5049] __arm64_sys_openat+0x118/0x14c [ 75.236342][ T5049] invoke_syscall+0x98/0x2b0 [ 75.237079][ T5049] el0_svc_common+0x138/0x258 [ 75.237801][ T5049] do_el0_svc+0x58/0x13c [ 75.238444][ T5049] el0_svc+0x78/0x1d0 [ 75.239048][ T5049] el0t_64_sync_handler+0xcc/0xe4 [ 75.239834][ T5049] el0t_64_sync+0x1a0/0x1a4 [ 75.307773][ T4881] BTRFS: device fsid ed167579-eb65-4e76-9a50-61ac97e9b59d devid 1 transid 12 /dev/loop0 scanned by udevd (4881) [ 75.397566][ T5070] loop0: detected capacity change from 0 to 32768 [ 75.530012][ T5070] FAULT_INJECTION: forcing a failure. [ 75.530012][ T5070] name failslab, interval 1, probability 0, space 0, times 0 [ 75.532139][ T5070] CPU: 1 PID: 5070 Comm: syz.0.23 Tainted: G W syzkaller #0 [ 75.533512][ T5070] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/26/2026 [ 75.535180][ T5070] Call trace: [ 75.535726][ T5070] dump_backtrace+0x0/0x458 [ 75.536506][ T5070] show_stack+0x2c/0x3c [ 75.537197][ T5070] __dump_stack+0x30/0x40 [ 75.537976][ T5070] dump_stack_lvl+0xf4/0x15c [ 75.538719][ T5070] dump_stack+0x1c/0x5c [ 75.539378][ T5070] should_fail+0x3bc/0x514 [ 75.540090][ T5070] __should_failslab+0xbc/0x10c [ 75.540832][ T5070] should_failslab+0x10/0x28 [ 75.541530][ T5070] slab_pre_alloc_hook+0x64/0xe8 [ 75.542338][ T5070] kmem_cache_alloc+0x94/0x3d4 [ 75.543072][ T5070] btrfs_alloc_path+0x5c/0x68 [ 75.543868][ T5070] btrfs_insert_dir_item+0x184/0x3e8 [ 75.544719][ T5070] btrfs_add_link+0x2b0/0xa9c [ 75.545405][ T5070] btrfs_create+0x468/0x514 [ 75.546143][ T5070] path_openat+0xe18/0x2718 [ 75.546918][ T5070] do_filp_open+0x184/0x368 [ 75.547701][ T5070] do_sys_openat2+0x134/0x3f4 [ 75.548450][ T5070] __arm64_sys_openat+0x118/0x14c [ 75.549272][ T5070] invoke_syscall+0x98/0x2b0 [ 75.550033][ T5070] el0_svc_common+0x138/0x258 [ 75.550838][ T5070] do_el0_svc+0x58/0x13c [ 75.551599][ T5070] el0_svc+0x78/0x1d0 [ 75.552290][ T5070] el0t_64_sync_handler+0xcc/0xe4 [ 75.553206][ T5070] el0t_64_sync+0x1a0/0x1a4 [ 75.554931][ T5070] ------------[ cut here ]------------ [ 75.556370][ T5070] WARNING: CPU: 1 PID: 5070 at fs/btrfs/inode.c:6776 btrfs_add_link+0x718/0xa9c [ 75.557776][ T5070] Modules linked in: [ 75.558431][ T5070] CPU: 1 PID: 5070 Comm: syz.0.23 Tainted: G W syzkaller #0 [ 75.559861][ T5070] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/26/2026 [ 75.561597][ T5070] pstate: 62400005 (nZCv daif +PAN -UAO +TCO -DIT -SSBS BTYPE=--) [ 75.562804][ T5070] pc : btrfs_add_link+0x718/0xa9c [ 75.563557][ T5070] lr : btrfs_add_link+0x718/0xa9c [ 75.564328][ T5070] sp : ffff80001f997580 [ 75.564946][ T5070] x29: ffff80001f997680 x28: ffff0000de7ff370 x27: 0000000000000108 [ 75.566175][ T5070] x26: 00000000fffffff4 x25: 0000000000000000 x24: dfff800000000000 [ 75.567501][ T5070] x23: 0000000000000014 x22: 1fffe0001bcffe79 x21: ffff700003f32eb8 [ 75.568895][ T5070] x20: 00000000fffffff4 x19: ffff0000de7ff3c8 x18: 0000000000000001 [ 75.570284][ T5070] x17: 0000000000000000 x16: ffff800011255484 x15: 00000000ffffffff [ 75.571666][ T5070] x14: 0000000000000001 x13: 1fffe000341f49ab x12: 0000000000ff0100 [ 75.573043][ T5070] x11: 0000000000000000 x10: 0000000000000000 x9 : 3adfb60c7e8df500 [ 75.574360][ T5070] x8 : 3adfb60c7e8df500 x7 : 0000000000000001 x6 : 0000000000000001 [ 75.575645][ T5070] x5 : ffff80001f996e98 x4 : ffff80001436f3e0 x3 : ffff800008508fa8 [ 75.576936][ T5070] x2 : 0000000000000001 x1 : 0000000100000000 x0 : 0000000000000026 [ 75.578200][ T5070] Call trace: [ 75.578711][ T5070] btrfs_add_link+0x718/0xa9c [ 75.579448][ T5070] btrfs_create+0x468/0x514 [ 75.580187][ T5070] path_openat+0xe18/0x2718 [ 75.580967][ T5070] do_filp_open+0x184/0x368 [ 75.581723][ T5070] do_sys_openat2+0x134/0x3f4 [ 75.582514][ T5070] __arm64_sys_openat+0x118/0x14c [ 75.583302][ T5070] invoke_syscall+0x98/0x2b0 [ 75.584090][ T5070] el0_svc_common+0x138/0x258 [ 75.584909][ T5070] do_el0_svc+0x58/0x13c [ 75.585658][ T5070] el0_svc+0x78/0x1d0 [ 75.586318][ T5070] el0t_64_sync_handler+0xcc/0xe4 [ 75.587106][ T5070] el0t_64_sync+0x1a0/0x1a4 [ 75.587856][ T5070] irq event stamp: 80418 [ 75.588557][ T5070] hardirqs last enabled at (80417): [] __up_console_sem+0xb4/0xfc [ 75.590110][ T5070] hardirqs last disabled at (80418): [] el1_dbg+0x24/0x80 [ 75.591483][ T5070] softirqs last enabled at (80394): [] handle_softirqs+0xa40/0xbe4 [ 75.593086][ T5070] softirqs last disabled at (80273): [] __irq_exit_rcu+0x240/0x43c [ 75.594615][ T5070] ---[ end trace 9d3a0ca7cd6df5df ]--- [ 75.596565][ T5070] BTRFS: error (device loop0) in btrfs_add_link:6776: errno=-12 Out of memory [ 75.735607][ T5093] loop0: detected capacity change from 0 to 32768 [ 75.785704][ T5093] BTRFS: device fsid ed167579-eb65-4e76-9a50-61ac97e9b59d devid 1 transid 8 /dev/loop0 scanned by syz.0.24 (5093) [ 75.873666][ T5093] FAULT_INJECTION: forcing a failure. [ 75.873666][ T5093] name failslab, interval 1, probability 0, space 0, times 0 [ 75.878893][ T5093] CPU: 1 PID: 5093 Comm: syz.0.24 Tainted: G W syzkaller #0 [ 75.880423][ T5093] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/26/2026 [ 75.882244][ T5093] Call trace: [ 75.882787][ T5093] dump_backtrace+0x0/0x458 [ 75.883497][ T5093] show_stack+0x2c/0x3c [ 75.884126][ T5093] __dump_stack+0x30/0x40 [ 75.884838][ T5093] dump_stack_lvl+0xf4/0x15c [ 75.885622][ T5093] dump_stack+0x1c/0x5c [ 75.886331][ T5093] should_fail+0x3bc/0x514 [ 75.887052][ T5093] __should_failslab+0xbc/0x10c [ 75.887839][ T5093] should_failslab+0x10/0x28 [ 75.888574][ T5093] slab_pre_alloc_hook+0x64/0xe8 [ 75.889335][ T5093] kmem_cache_alloc+0x94/0x3d4 [ 75.890106][ T5093] btrfs_alloc_path+0x5c/0x68 [ 75.890805][ T5093] btrfs_insert_dir_item+0x184/0x3e8 [ 75.891645][ T5093] btrfs_add_link+0x2b0/0xa9c [ 75.892475][ T5093] btrfs_create+0x468/0x514 [ 75.893175][ T5093] path_openat+0xe18/0x2718 [ 75.893879][ T5093] do_filp_open+0x184/0x368 [ 75.894586][ T5093] do_sys_openat2+0x134/0x3f4 [ 75.895365][ T5093] __arm64_sys_openat+0x118/0x14c [ 75.896208][ T5093] invoke_syscall+0x98/0x2b0 [ 75.897001][ T5093] el0_svc_common+0x138/0x258 [ 75.897779][ T5093] do_el0_svc+0x58/0x13c [ 75.898492][ T5093] el0_svc+0x78/0x1d0 [ 75.899106][ T5093] el0t_64_sync_handler+0xcc/0xe4 [ 75.899857][ T5093] el0t_64_sync+0x1a0/0x1a4 [ 75.901354][ T5093] ------------[ cut here ]------------ [ 75.902690][ T5093] WARNING: CPU: 1 PID: 5093 at fs/btrfs/inode.c:6776 btrfs_add_link+0x718/0xa9c [ 75.904121][ T5093] Modules linked in: [ 75.904668][ T5093] CPU: 1 PID: 5093 Comm: syz.0.24 Tainted: G W syzkaller #0 [ 75.906016][ T5093] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/26/2026 [ 75.907609][ T5093] pstate: 62400005 (nZCv daif +PAN -UAO +TCO -DIT -SSBS BTYPE=--) [ 75.908901][ T5093] pc : btrfs_add_link+0x718/0xa9c [ 75.909680][ T5093] lr : btrfs_add_link+0x718/0xa9c [ 75.910561][ T5093] sp : ffff8000208e7580 [ 75.911250][ T5093] x29: ffff8000208e7680 x28: ffff0000de625370 x27: 0000000000000108 [ 75.912593][ T5093] x26: 00000000fffffff4 x25: 0000000000000000 x24: dfff800000000000 [ 75.913904][ T5093] x23: 0000000000000014 x22: 1fffe0001bcc4a79 x21: ffff70000411ceb8 [ 75.915135][ T5093] x20: 00000000fffffff4 x19: ffff0000de6253c8 x18: 0000000000000001 [ 75.916370][ T5093] x17: 0000000000000000 x16: ffff800011255484 x15: 00000000ffffffff [ 75.917784][ T5093] x14: 0000000000000001 x13: 1fffe000341f49ab x12: 0000000000ff0100 [ 75.919163][ T5093] x11: 0000000000000000 x10: 0000000000000000 x9 : d82c2e432249a800 [ 75.920458][ T5093] x8 : d82c2e432249a800 x7 : 0000000000000001 x6 : 0000000000000001 [ 75.921790][ T5093] x5 : ffff8000208e6e98 x4 : ffff80001436f3e0 x3 : ffff800008508fa8 [ 75.923089][ T5093] x2 : 0000000000000001 x1 : 0000000100000000 x0 : 0000000000000026 [ 75.924393][ T5093] Call trace: [ 75.924917][ T5093] btrfs_add_link+0x718/0xa9c [ 75.925700][ T5093] btrfs_create+0x468/0x514 [ 75.926418][ T5093] path_openat+0xe18/0x2718 [ 75.927198][ T5093] do_filp_open+0x184/0x368 [ 75.927927][ T5093] do_sys_openat2+0x134/0x3f4 [ 75.928685][ T5093] __arm64_sys_openat+0x118/0x14c [ 75.929508][ T5093] invoke_syscall+0x98/0x2b0 [ 75.930251][ T5093] el0_svc_common+0x138/0x258 [ 75.931022][ T5093] do_el0_svc+0x58/0x13c [ 75.931796][ T5093] el0_svc+0x78/0x1d0 [ 75.932530][ T5093] el0t_64_sync_handler+0xcc/0xe4 [ 75.933316][ T5093] el0t_64_sync+0x1a0/0x1a4 [ 75.934011][ T5093] irq event stamp: 79686 [ 75.934674][ T5093] hardirqs last enabled at (79685): [] __up_console_sem+0xb4/0xfc [ 75.936169][ T5093] hardirqs last disabled at (79686): [] el1_dbg+0x24/0x80 [ 75.937511][ T5093] softirqs last enabled at (79662): [] handle_softirqs+0xa40/0xbe4 [ 75.939017][ T5093] softirqs last disabled at (79555): [] __irq_exit_rcu+0x240/0x43c [ 75.940516][ T5093] ---[ end trace 9d3a0ca7cd6df5e0 ]--- [ 75.942634][ T5093] BTRFS: error (device loop0) in btrfs_add_link:6776: errno=-12 Out of memory [ 76.119249][ T5115] BTRFS: device fsid ed167579-eb65-4e76-9a50-61ac97e9b59d devid 1 transid 8 /dev/loop0 scanned by syz.0.25 (5115) [ 76.136513][ T5115] FAULT_INJECTION: forcing a failure. [ 76.136513][ T5115] name failslab, interval 1, probability 0, space 0, times 0 [ 76.138575][ T5115] CPU: 1 PID: 5115 Comm: syz.0.25 Tainted: G W syzkaller #0 [ 76.139955][ T5115] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/26/2026 [ 76.141561][ T5115] Call trace: [ 76.142052][ T5115] dump_backtrace+0x0/0x458 [ 76.142759][ T5115] show_stack+0x2c/0x3c [ 76.143398][ T5115] __dump_stack+0x30/0x40 [ 76.144157][ T5115] dump_stack_lvl+0xf4/0x15c [ 76.144952][ T5115] dump_stack+0x1c/0x5c [ 76.145700][ T5115] should_fail+0x3bc/0x514 [ 76.146455][ T5115] __should_failslab+0xbc/0x10c [ 76.147293][ T5115] should_failslab+0x10/0x28 [ 76.147997][ T5115] slab_pre_alloc_hook+0x64/0xe8 [ 76.148823][ T5115] kmem_cache_alloc+0x94/0x3d4 [ 76.149603][ T5115] btrfs_alloc_path+0x5c/0x68 [ 76.150418][ T5115] btrfs_insert_dir_item+0x184/0x3e8 [ 76.151214][ T5115] btrfs_add_link+0x2b0/0xa9c [ 76.151973][ T5115] btrfs_create+0x468/0x514 [ 76.152665][ T5115] path_openat+0xe18/0x2718 [ 76.153391][ T5115] do_filp_open+0x184/0x368 [ 76.154061][ T5115] do_sys_openat2+0x134/0x3f4 [ 76.154817][ T5115] __arm64_sys_openat+0x118/0x14c [ 76.155643][ T5115] invoke_syscall+0x98/0x2b0 [ 76.156453][ T5115] el0_svc_common+0x138/0x258 [ 76.157249][ T5115] do_el0_svc+0x58/0x13c [ 76.157928][ T5115] el0_svc+0x78/0x1d0 [ 76.158573][ T5115] el0t_64_sync_handler+0xcc/0xe4 [ 76.159405][ T5115] el0t_64_sync+0x1a0/0x1a4 [ 76.161584][ T5115] ------------[ cut here ]------------ [ 76.162630][ T5115] WARNING: CPU: 1 PID: 5115 at fs/btrfs/inode.c:6776 btrfs_add_link+0x718/0xa9c [ 76.163949][ T5115] Modules linked in: [ 76.164619][ T5115] CPU: 1 PID: 5115 Comm: syz.0.25 Tainted: G W syzkaller #0 [ 76.165983][ T5115] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/26/2026 [ 76.167700][ T5115] pstate: 62400005 (nZCv daif +PAN -UAO +TCO -DIT -SSBS BTYPE=--) [ 76.168966][ T5115] pc : btrfs_add_link+0x718/0xa9c [ 76.169775][ T5115] lr : btrfs_add_link+0x718/0xa9c [ 76.170622][ T5115] sp : ffff8000208e7580 [ 76.171274][ T5115] x29: ffff8000208e7680 x28: ffff0000de7ff630 x27: 0000000000000108 [ 76.172559][ T5115] x26: 00000000fffffff4 x25: 0000000000000000 x24: dfff800000000000 [ 76.173800][ T5115] x23: 0000000000000014 x22: 1fffe0001bcffed1 x21: ffff70000411ceb8 [ 76.175006][ T5115] x20: 00000000fffffff4 x19: ffff0000de7ff688 x18: 0000000000000001 [ 76.176278][ T5115] x17: 0000000000000000 x16: ffff800011255484 x15: 00000000ffffffff [ 76.177556][ T5115] x14: 0000000000000001 x13: 1fffe000341f49ab x12: 0000000000ff0100 [ 76.178906][ T5115] x11: 0000000000000000 x10: 0000000000000000 x9 : eaca0e13c0d0cb00 [ 76.180178][ T5115] x8 : eaca0e13c0d0cb00 x7 : 0000000000000001 x6 : 0000000000000001 [ 76.181470][ T5115] x5 : ffff8000208e6e98 x4 : ffff80001436f3e0 x3 : ffff800008508fa8 [ 76.182740][ T5115] x2 : 0000000000000001 x1 : 0000000100000000 x0 : 0000000000000026 [ 76.183998][ T5115] Call trace: [ 76.184465][ T5115] btrfs_add_link+0x718/0xa9c [ 76.185186][ T5115] btrfs_create+0x468/0x514 [ 76.185830][ T5115] path_openat+0xe18/0x2718 [ 76.186539][ T5115] do_filp_open+0x184/0x368 [ 76.187257][ T5115] do_sys_openat2+0x134/0x3f4 [ 76.188072][ T5115] __arm64_sys_openat+0x118/0x14c [ 76.188929][ T5115] invoke_syscall+0x98/0x2b0 [ 76.189679][ T5115] el0_svc_common+0x138/0x258 [ 76.190406][ T5115] do_el0_svc+0x58/0x13c [ 76.191062][ T5115] el0_svc+0x78/0x1d0 [ 76.191673][ T5115] el0t_64_sync_handler+0xcc/0xe4 [ 76.192463][ T5115] el0t_64_sync+0x1a0/0x1a4 [ 76.193156][ T5115] irq event stamp: 79880 [ 76.193833][ T5115] hardirqs last enabled at (79879): [] __up_console_sem+0xb4/0xfc [ 76.195397][ T5115] hardirqs last disabled at (79880): [] el1_dbg+0x24/0x80 [ 76.196814][ T5115] softirqs last enabled at (79860): [] handle_softirqs+0xa40/0xbe4 [ 76.198298][ T5115] softirqs last disabled at (79835): [] __irq_exit_rcu+0x240/0x43c [ 76.199874][ T5115] ---[ end trace 9d3a0ca7cd6df5e1 ]--- [ 76.201579][ T5115] BTRFS: error (device loop0) in btrfs_add_link:6776: errno=-12 Out of memory [ 76.366471][ T5137] BTRFS: device fsid ed167579-eb65-4e76-9a50-61ac97e9b59d devid 1 transid 8 /dev/loop0 scanned by syz.0.26 (5137) [ 76.394666][ T5137] FAULT_INJECTION: forcing a failure. [ 76.394666][ T5137] name failslab, interval 1, probability 0, space 0, times 0 [ 76.396791][ T5137] CPU: 0 PID: 5137 Comm: syz.0.26 Tainted: G W syzkaller #0 [ 76.398211][ T5137] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/26/2026 [ 76.399830][ T5137] Call trace: [ 76.400346][ T5137] dump_backtrace+0x0/0x458 [ 76.401045][ T5137] show_stack+0x2c/0x3c [ 76.401713][ T5137] __dump_stack+0x30/0x40 [ 76.402482][ T5137] dump_stack_lvl+0xf4/0x15c [ 76.403249][ T5137] dump_stack+0x1c/0x5c [ 76.403905][ T5137] should_fail+0x3bc/0x514 [ 76.404615][ T5137] __should_failslab+0xbc/0x10c [ 76.405395][ T5137] should_failslab+0x10/0x28 [ 76.406115][ T5137] slab_pre_alloc_hook+0x64/0xe8 [ 76.406872][ T5137] kmem_cache_alloc+0x94/0x3d4 [ 76.407617][ T5137] btrfs_alloc_path+0x5c/0x68 [ 76.408352][ T5137] btrfs_insert_dir_item+0x184/0x3e8 [ 76.409192][ T5137] btrfs_add_link+0x2b0/0xa9c [ 76.409893][ T5137] btrfs_create+0x468/0x514 [ 76.410599][ T5137] path_openat+0xe18/0x2718 [ 76.411286][ T5137] do_filp_open+0x184/0x368 [ 76.411997][ T5137] do_sys_openat2+0x134/0x3f4 [ 76.412763][ T5137] __arm64_sys_openat+0x118/0x14c [ 76.413609][ T5137] invoke_syscall+0x98/0x2b0 [ 76.414422][ T5137] el0_svc_common+0x138/0x258 [ 76.415130][ T5137] do_el0_svc+0x58/0x13c [ 76.415887][ T5137] el0_svc+0x78/0x1d0 [ 76.416542][ T5137] el0t_64_sync_handler+0xcc/0xe4 [ 76.417409][ T5137] el0t_64_sync+0x1a0/0x1a4 [ 76.418883][ T5137] ------------[ cut here ]------------ [ 76.419800][ T5137] WARNING: CPU: 0 PID: 5137 at fs/btrfs/inode.c:6776 btrfs_add_link+0x718/0xa9c [ 76.421004][ T5137] Modules linked in: [ 76.421561][ T5137] CPU: 0 PID: 5137 Comm: syz.0.26 Tainted: G W syzkaller #0 [ 76.422995][ T5137] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/26/2026 [ 76.424577][ T5137] pstate: 62400005 (nZCv daif +PAN -UAO +TCO -DIT -SSBS BTYPE=--) [ 76.425832][ T5137] pc : btrfs_add_link+0x718/0xa9c [ 76.426651][ T5137] lr : btrfs_add_link+0x718/0xa9c [ 76.427425][ T5137] sp : ffff8000204f7580 [ 76.428083][ T5137] x29: ffff8000204f7680 x28: ffff0000de6254d0 x27: 0000000000000108 [ 76.429293][ T5137] x26: 00000000fffffff4 x25: 0000000000000000 x24: dfff800000000000 [ 76.430590][ T5137] x23: 0000000000000014 x22: 1fffe0001bcc4aa5 x21: ffff70000409eeb8 [ 76.431803][ T5137] x20: 00000000fffffff4 x19: ffff0000de625528 x18: 0000000000000001 [ 76.433089][ T5137] x17: 0000000000000000 x16: ffff800011255484 x15: 00000000ffffffff [ 76.434375][ T5137] x14: 0000000000000001 x13: 1fffe000341f07ab x12: 0000000000ff0100 [ 76.435676][ T5137] x11: 0000000000000000 x10: 0000000000000000 x9 : 97ba6fc3296c7900 [ 76.437038][ T5137] x8 : 97ba6fc3296c7900 x7 : 0000000000000001 x6 : 0000000000000001 [ 76.438435][ T5137] x5 : ffff8000204f6e98 x4 : ffff80001436f3e0 x3 : ffff800008508fa8 [ 76.439770][ T5137] x2 : 0000000000000001 x1 : 0000000100000000 x0 : 0000000000000026 [ 76.441085][ T5137] Call trace: [ 76.441582][ T5137] btrfs_add_link+0x718/0xa9c [ 76.442315][ T5137] btrfs_create+0x468/0x514 [ 76.443056][ T5137] path_openat+0xe18/0x2718 [ 76.443839][ T5137] do_filp_open+0x184/0x368 [ 76.444604][ T5137] do_sys_openat2+0x134/0x3f4 [ 76.445393][ T5137] __arm64_sys_openat+0x118/0x14c [ 76.446232][ T5137] invoke_syscall+0x98/0x2b0 [ 76.446997][ T5137] el0_svc_common+0x138/0x258 [ 76.447706][ T5137] do_el0_svc+0x58/0x13c [ 76.448438][ T5137] el0_svc+0x78/0x1d0 [ 76.449083][ T5137] el0t_64_sync_handler+0xcc/0xe4 [ 76.449920][ T5137] el0t_64_sync+0x1a0/0x1a4 [ 76.450702][ T5137] irq event stamp: 80382 [ 76.451378][ T5137] hardirqs last enabled at (80381): [] __up_console_sem+0xb4/0xfc [ 76.452982][ T5137] hardirqs last disabled at (80382): [] el1_dbg+0x24/0x80 [ 76.454401][ T5137] softirqs last enabled at (80362): [] handle_softirqs+0xa40/0xbe4 [ 76.455923][ T5137] softirqs last disabled at (80321): [] __irq_exit_rcu+0x240/0x43c [ 76.457444][ T5137] ---[ end trace 9d3a0ca7cd6df5e2 ]--- [ 76.459480][ T5137] BTRFS: error (device loop0) in btrfs_add_link:6776: errno=-12 Out of memory [ 76.695762][ T5159] BTRFS: device fsid ed167579-eb65-4e76-9a50-61ac97e9b59d devid 1 transid 8 /dev/loop0 scanned by syz.0.27 (5159) [ 76.712084][ T5159] FAULT_INJECTION: forcing a failure. [ 76.712084][ T5159] name failslab, interval 1, probability 0, space 0, times 0 [ 76.714509][ T5159] CPU: 1 PID: 5159 Comm: syz.0.27 Tainted: G W syzkaller #0 [ 76.716002][ T5159] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/26/2026 [ 76.717611][ T5159] Call trace: [ 76.718193][ T5159] dump_backtrace+0x0/0x458 [ 76.718968][ T5159] show_stack+0x2c/0x3c [ 76.719659][ T5159] __dump_stack+0x30/0x40 [ 76.720418][ T5159] dump_stack_lvl+0xf4/0x15c [ 76.721219][ T5159] dump_stack+0x1c/0x5c [ 76.721957][ T5159] should_fail+0x3bc/0x514 [ 76.722712][ T5159] __should_failslab+0xbc/0x10c [ 76.723484][ T5159] should_failslab+0x10/0x28 [ 76.724221][ T5159] slab_pre_alloc_hook+0x64/0xe8 [ 76.724996][ T5159] kmem_cache_alloc+0x94/0x3d4 [ 76.725765][ T5159] btrfs_get_or_create_delayed_node+0x114/0x4a8 [ 76.726752][ T5159] btrfs_delayed_update_inode+0x3c/0x1b68 [ 76.727555][ T5159] btrfs_update_inode+0x210/0x3d4 [ 76.728307][ T5159] btrfs_create+0x364/0x514 [ 76.728989][ T5159] path_openat+0xe18/0x2718 [ 76.729614][ T5159] do_filp_open+0x184/0x368 [ 76.730281][ T5159] do_sys_openat2+0x134/0x3f4 [ 76.730989][ T5159] __arm64_sys_openat+0x118/0x14c [ 76.731904][ T5159] invoke_syscall+0x98/0x2b0 [ 76.732691][ T5159] el0_svc_common+0x138/0x258 [ 76.733455][ T5159] do_el0_svc+0x58/0x13c [ 76.734167][ T5159] el0_svc+0x78/0x1d0 [ 76.734790][ T5159] el0t_64_sync_handler+0xcc/0xe4 [ 76.735550][ T5159] el0t_64_sync+0x1a0/0x1a4 [ 76.910800][ T5180] BTRFS: device fsid ed167579-eb65-4e76-9a50-61ac97e9b59d devid 1 transid 8 /dev/loop0 scanned by syz.0.28 (5180) [ 76.929818][ T5180] FAULT_INJECTION: forcing a failure. [ 76.929818][ T5180] name failslab, interval 1, probability 0, space 0, times 0 [ 76.931795][ T5180] CPU: 0 PID: 5180 Comm: syz.0.28 Tainted: G W syzkaller #0 [ 76.933085][ T5180] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/26/2026 [ 76.934629][ T5180] Call trace: [ 76.935114][ T5180] dump_backtrace+0x0/0x458 [ 76.935793][ T5180] show_stack+0x2c/0x3c [ 76.936434][ T5180] __dump_stack+0x30/0x40 [ 76.937087][ T5180] dump_stack_lvl+0xf4/0x15c [ 76.937783][ T5180] dump_stack+0x1c/0x5c [ 76.938470][ T5180] should_fail+0x3bc/0x514 [ 76.939224][ T5180] __should_failslab+0xbc/0x10c [ 76.939957][ T5180] should_failslab+0x10/0x28 [ 76.940663][ T5180] slab_pre_alloc_hook+0x64/0xe8 [ 76.941426][ T5180] kmem_cache_alloc+0x94/0x3d4 [ 76.942150][ T5180] btrfs_alloc_path+0x5c/0x68 [ 76.942870][ T5180] btrfs_insert_dir_item+0x184/0x3e8 [ 76.943745][ T5180] btrfs_add_link+0x2b0/0xa9c [ 76.944493][ T5180] btrfs_create+0x468/0x514 [ 76.945236][ T5180] path_openat+0xe18/0x2718 [ 76.945929][ T5180] do_filp_open+0x184/0x368 [ 76.946616][ T5180] do_sys_openat2+0x134/0x3f4 [ 76.947413][ T5180] __arm64_sys_openat+0x118/0x14c [ 76.948213][ T5180] invoke_syscall+0x98/0x2b0 [ 76.948965][ T5180] el0_svc_common+0x138/0x258 [ 76.949728][ T5180] do_el0_svc+0x58/0x13c [ 76.950375][ T5180] el0_svc+0x78/0x1d0 [ 76.951044][ T5180] el0t_64_sync_handler+0xcc/0xe4 [ 76.951890][ T5180] el0t_64_sync+0x1a0/0x1a4 [ 76.953312][ T5180] ------------[ cut here ]------------ [ 76.954232][ T5180] WARNING: CPU: 0 PID: 5180 at fs/btrfs/inode.c:6776 btrfs_add_link+0x718/0xa9c [ 76.955708][ T5180] Modules linked in: [ 76.956337][ T5180] CPU: 0 PID: 5180 Comm: syz.0.28 Tainted: G W syzkaller #0 [ 76.957755][ T5180] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/26/2026 [ 76.959404][ T5180] pstate: 62400005 (nZCv daif +PAN -UAO +TCO -DIT -SSBS BTYPE=--) [ 76.960668][ T5180] pc : btrfs_add_link+0x718/0xa9c [ 76.961408][ T5180] lr : btrfs_add_link+0x718/0xa9c [ 76.962172][ T5180] sp : ffff8000204f7580 [ 76.962811][ T5180] x29: ffff8000204f7680 x28: ffff0000de625790 x27: 0000000000000108 [ 76.964076][ T5180] x26: 00000000fffffff4 x25: 0000000000000000 x24: dfff800000000000 [ 76.965304][ T5180] x23: 0000000000000014 x22: 1fffe0001bcc4afd x21: ffff70000409eeb8 [ 76.966655][ T5180] x20: 00000000fffffff4 x19: ffff0000de6257e8 x18: 0000000000000001 [ 76.968000][ T5180] x17: 0000000000000000 x16: ffff800011255484 x15: 00000000ffffffff [ 76.969297][ T5180] x14: 0000000000000001 x13: 1fffe000341f07ab x12: 0000000000ff0100 [ 76.970579][ T5180] x11: 0000000000000000 x10: 0000000000000000 x9 : 1507114120267a00 [ 76.971846][ T5180] x8 : 1507114120267a00 x7 : 0000000000000001 x6 : 0000000000000001 [ 76.973092][ T5180] x5 : ffff8000204f6e98 x4 : ffff80001436f3e0 x3 : ffff800008508fa8 [ 76.974355][ T5180] x2 : 0000000000000001 x1 : 0000000100000000 x0 : 0000000000000026 [ 76.975609][ T5180] Call trace: [ 76.976092][ T5180] btrfs_add_link+0x718/0xa9c [ 76.976853][ T5180] btrfs_create+0x468/0x514 [ 76.977534][ T5180] path_openat+0xe18/0x2718 [ 76.978223][ T5180] do_filp_open+0x184/0x368 [ 76.978875][ T5180] do_sys_openat2+0x134/0x3f4 [ 76.979575][ T5180] __arm64_sys_openat+0x118/0x14c [ 76.980307][ T5180] invoke_syscall+0x98/0x2b0 [ 76.981040][ T5180] el0_svc_common+0x138/0x258 [ 76.981704][ T5180] do_el0_svc+0x58/0x13c [ 76.982354][ T5180] el0_svc+0x78/0x1d0 [ 76.982930][ T5180] el0t_64_sync_handler+0xcc/0xe4 [ 76.983683][ T5180] el0t_64_sync+0x1a0/0x1a4 [ 76.984377][ T5180] irq event stamp: 79974 [ 76.985102][ T5180] hardirqs last enabled at (79973): [] __up_console_sem+0xb4/0xfc [ 76.986601][ T5180] hardirqs last disabled at (79974): [] el1_dbg+0x24/0x80 [ 76.988020][ T5180] softirqs last enabled at (79954): [] handle_softirqs+0xa40/0xbe4 [ 76.989448][ T5180] softirqs last disabled at (79917): [] __irq_exit_rcu+0x240/0x43c [ 76.991082][ T5180] ---[ end trace 9d3a0ca7cd6df5e3 ]--- [ 76.992202][ T5180] BTRFS: error (device loop0) in btrfs_add_link:6776: errno=-12 Out of memory [ 77.165932][ T5202] BTRFS: device fsid ed167579-eb65-4e76-9a50-61ac97e9b59d devid 1 transid 8 /dev/loop0 scanned by syz.0.29 (5202) [ 77.188224][ T5202] FAULT_INJECTION: forcing a failure. [ 77.188224][ T5202] name failslab, interval 1, probability 0, space 0, times 0 [ 77.190399][ T5202] CPU: 1 PID: 5202 Comm: syz.0.29 Tainted: G W syzkaller #0 [ 77.191769][ T5202] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/26/2026 [ 77.193370][ T5202] Call trace: [ 77.193909][ T5202] dump_backtrace+0x0/0x458 [ 77.194606][ T5202] show_stack+0x2c/0x3c [ 77.195279][ T5202] __dump_stack+0x30/0x40 [ 77.196007][ T5202] dump_stack_lvl+0xf4/0x15c [ 77.196789][ T5202] dump_stack+0x1c/0x5c [ 77.197449][ T5202] should_fail+0x3bc/0x514 [ 77.198152][ T5202] __should_failslab+0xbc/0x10c [ 77.199027][ T5202] should_failslab+0x10/0x28 [ 77.199810][ T5202] slab_pre_alloc_hook+0x64/0xe8 [ 77.200611][ T5202] kmem_cache_alloc+0x94/0x3d4 [ 77.201412][ T5202] btrfs_alloc_path+0x5c/0x68 [ 77.202143][ T5202] btrfs_insert_dir_item+0x184/0x3e8 [ 77.203052][ T5202] btrfs_add_link+0x2b0/0xa9c [ 77.203802][ T5202] btrfs_create+0x468/0x514 [ 77.204612][ T5202] path_openat+0xe18/0x2718 [ 77.205378][ T5202] do_filp_open+0x184/0x368 [ 77.206116][ T5202] do_sys_openat2+0x134/0x3f4 [ 77.206899][ T5202] __arm64_sys_openat+0x118/0x14c [ 77.207737][ T5202] invoke_syscall+0x98/0x2b0 [ 77.208505][ T5202] el0_svc_common+0x138/0x258 [ 77.209269][ T5202] do_el0_svc+0x58/0x13c [ 77.209950][ T5202] el0_svc+0x78/0x1d0 [ 77.210568][ T5202] el0t_64_sync_handler+0xcc/0xe4 [ 77.211356][ T5202] el0t_64_sync+0x1a0/0x1a4 [ 77.213568][ T5202] ------------[ cut here ]------------ [ 77.214566][ T5202] WARNING: CPU: 1 PID: 5202 at fs/btrfs/inode.c:6776 btrfs_add_link+0x718/0xa9c [ 77.215953][ T5202] Modules linked in: [ 77.216615][ T5202] CPU: 1 PID: 5202 Comm: syz.0.29 Tainted: G W syzkaller #0 [ 77.217915][ T5202] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/26/2026 [ 77.219478][ T5202] pstate: 62400005 (nZCv daif +PAN -UAO +TCO -DIT -SSBS BTYPE=--) [ 77.220646][ T5202] pc : btrfs_add_link+0x718/0xa9c [ 77.221525][ T5202] lr : btrfs_add_link+0x718/0xa9c [ 77.222321][ T5202] sp : ffff800020f27580 [ 77.222996][ T5202] x29: ffff800020f27680 x28: ffff0000de53e4d0 x27: 0000000000000108 [ 77.224322][ T5202] x26: 00000000fffffff4 x25: 0000000000000000 x24: dfff800000000000 [ 77.225567][ T5202] x23: 0000000000000014 x22: 1fffe0001bca7ca5 x21: ffff7000041e4eb8 [ 77.226887][ T5202] x20: 00000000fffffff4 x19: ffff0000de53e528 x18: 0000000000000001 [ 77.228255][ T5202] x17: 0000000000000000 x16: ffff800011255484 x15: 00000000ffffffff [ 77.229568][ T5202] x14: 0000000000000001 x13: 1fffe000341f49ab x12: 0000000000ff0100 [ 77.230838][ T5202] x11: 0000000000000000 x10: 0000000000000000 x9 : 52bfdbe307cacf00 [ 77.232194][ T5202] x8 : 52bfdbe307cacf00 x7 : 0000000000000001 x6 : 0000000000000001 [ 77.233470][ T5202] x5 : ffff800020f26e98 x4 : ffff80001436f3e0 x3 : ffff800008508fa8 [ 77.234851][ T5202] x2 : 0000000000000001 x1 : 0000000100000000 x0 : 0000000000000026 [ 77.236116][ T5202] Call trace: [ 77.236621][ T5202] btrfs_add_link+0x718/0xa9c [ 77.237340][ T5202] btrfs_create+0x468/0x514 [ 77.238115][ T5202] path_openat+0xe18/0x2718 [ 77.238863][ T5202] do_filp_open+0x184/0x368 [ 77.239610][ T5202] do_sys_openat2+0x134/0x3f4 [ 77.240394][ T5202] __arm64_sys_openat+0x118/0x14c [ 77.241216][ T5202] invoke_syscall+0x98/0x2b0 [ 77.241982][ T5202] el0_svc_common+0x138/0x258 [ 77.242718][ T5202] do_el0_svc+0x58/0x13c [ 77.243403][ T5202] el0_svc+0x78/0x1d0 [ 77.244042][ T5202] el0t_64_sync_handler+0xcc/0xe4 [ 77.244826][ T5202] el0t_64_sync+0x1a0/0x1a4 [ 77.245530][ T5202] irq event stamp: 79762 [ 77.246215][ T5202] hardirqs last enabled at (79761): [] __up_console_sem+0xb4/0xfc [ 77.247764][ T5202] hardirqs last disabled at (79762): [] el1_dbg+0x24/0x80 [ 77.249235][ T5202] softirqs last enabled at (79742): [] handle_softirqs+0xa40/0xbe4 [ 77.250788][ T5202] softirqs last disabled at (79697): [] __irq_exit_rcu+0x240/0x43c [ 77.252389][ T5202] ---[ end trace 9d3a0ca7cd6df5e4 ]--- [ 77.254055][ T5202] BTRFS: error (device loop0) in btrfs_add_link:6776: errno=-12 Out of memory [ 77.447487][ T5224] BTRFS: device fsid ed167579-eb65-4e76-9a50-61ac97e9b59d devid 1 transid 8 /dev/loop0 scanned by syz.0.30 (5224) [ 77.464156][ T5224] FAULT_INJECTION: forcing a failure. [ 77.464156][ T5224] name failslab, interval 1, probability 0, space 0, times 0 [ 77.466493][ T5224] CPU: 0 PID: 5224 Comm: syz.0.30 Tainted: G W syzkaller #0 [ 77.467772][ T5224] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/26/2026 [ 77.469306][ T5224] Call trace: [ 77.469771][ T5224] dump_backtrace+0x0/0x458 [ 77.470461][ T5224] show_stack+0x2c/0x3c [ 77.471080][ T5224] __dump_stack+0x30/0x40 [ 77.471739][ T5224] dump_stack_lvl+0xf4/0x15c [ 77.472444][ T5224] dump_stack+0x1c/0x5c [ 77.473104][ T5224] should_fail+0x3bc/0x514 [ 77.473786][ T5224] __should_failslab+0xbc/0x10c [ 77.474697][ T5224] should_failslab+0x10/0x28 [ 77.475509][ T5224] slab_pre_alloc_hook+0x64/0xe8 [ 77.476245][ T5224] kmem_cache_alloc+0x94/0x3d4 [ 77.476971][ T5224] btrfs_alloc_path+0x5c/0x68 [ 77.477666][ T5224] btrfs_insert_dir_item+0x184/0x3e8 [ 77.478465][ T5224] btrfs_add_link+0x2b0/0xa9c [ 77.479200][ T5224] btrfs_create+0x468/0x514 [ 77.479913][ T5224] path_openat+0xe18/0x2718 [ 77.480605][ T5224] do_filp_open+0x184/0x368 [ 77.481309][ T5224] do_sys_openat2+0x134/0x3f4 [ 77.482047][ T5224] __arm64_sys_openat+0x118/0x14c [ 77.482870][ T5224] invoke_syscall+0x98/0x2b0 [ 77.483549][ T5224] el0_svc_common+0x138/0x258 [ 77.484385][ T5224] do_el0_svc+0x58/0x13c [ 77.485089][ T5224] el0_svc+0x78/0x1d0 [ 77.485722][ T5224] el0t_64_sync_handler+0xcc/0xe4 [ 77.486616][ T5224] el0t_64_sync+0x1a0/0x1a4 [ 77.488660][ T5224] ------------[ cut here ]------------ [ 77.489631][ T5224] WARNING: CPU: 0 PID: 5224 at fs/btrfs/inode.c:6776 btrfs_add_link+0x718/0xa9c [ 77.491052][ T5224] Modules linked in: [ 77.491659][ T5224] CPU: 0 PID: 5224 Comm: syz.0.30 Tainted: G W syzkaller #0 [ 77.493012][ T5224] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/26/2026 [ 77.494485][ T5224] pstate: 62400005 (nZCv daif +PAN -UAO +TCO -DIT -SSBS BTYPE=--) [ 77.495650][ T5224] pc : btrfs_add_link+0x718/0xa9c [ 77.496386][ T5224] lr : btrfs_add_link+0x718/0xa9c [ 77.497171][ T5224] sp : ffff8000204f7580 [ 77.497814][ T5224] x29: ffff8000204f7680 x28: ffff0000de625a50 x27: 0000000000000108 [ 77.499203][ T5224] x26: 00000000fffffff4 x25: 0000000000000000 x24: dfff800000000000 [ 77.500472][ T5224] x23: 0000000000000014 x22: 1fffe0001bcc4b55 x21: ffff70000409eeb8 [ 77.501750][ T5224] x20: 00000000fffffff4 x19: ffff0000de625aa8 x18: 0000000000000001 [ 77.503055][ T5224] x17: 0000000000000000 x16: ffff800011255484 x15: 00000000ffffffff [ 77.504324][ T5224] x14: 0000000000000001 x13: 1fffe000341f07ab x12: 0000000000ff0100 [ 77.505574][ T5224] x11: 0000000000000000 x10: 0000000000000000 x9 : 5c9403ad09530100 [ 77.506878][ T5224] x8 : 5c9403ad09530100 x7 : 0000000000000001 x6 : 0000000000000001 [ 77.508039][ T5224] x5 : ffff8000204f6e98 x4 : ffff80001436f3e0 x3 : ffff800008508fa8 [ 77.509276][ T5224] x2 : 0000000000000001 x1 : 0000000100000000 x0 : 0000000000000026 [ 77.510615][ T5224] Call trace: [ 77.511173][ T5224] btrfs_add_link+0x718/0xa9c [ 77.511940][ T5224] btrfs_create+0x468/0x514 [ 77.512678][ T5224] path_openat+0xe18/0x2718 [ 77.513416][ T5224] do_filp_open+0x184/0x368 [ 77.514110][ T5224] do_sys_openat2+0x134/0x3f4 [ 77.514887][ T5224] __arm64_sys_openat+0x118/0x14c [ 77.515694][ T5224] invoke_syscall+0x98/0x2b0 [ 77.516455][ T5224] el0_svc_common+0x138/0x258 [ 77.517192][ T5224] do_el0_svc+0x58/0x13c [ 77.517864][ T5224] el0_svc+0x78/0x1d0 [ 77.518486][ T5224] el0t_64_sync_handler+0xcc/0xe4 [ 77.519293][ T5224] el0t_64_sync+0x1a0/0x1a4 [ 77.520001][ T5224] irq event stamp: 79956 [ 77.520657][ T5224] hardirqs last enabled at (79955): [] __up_console_sem+0xb4/0xfc [ 77.522151][ T5224] hardirqs last disabled at (79956): [] el1_dbg+0x24/0x80 [ 77.523462][ T5224] softirqs last enabled at (79936): [] handle_softirqs+0xa40/0xbe4 [ 77.525000][ T5224] softirqs last disabled at (79921): [] __irq_exit_rcu+0x240/0x43c [ 77.526587][ T5224] ---[ end trace 9d3a0ca7cd6df5e5 ]--- [ 77.528325][ T5224] BTRFS: error (device loop0) in btrfs_add_link:6776: errno=-12 Out of memory [ 77.757564][ T5246] BTRFS: device fsid ed167579-eb65-4e76-9a50-61ac97e9b59d devid 1 transid 8 /dev/loop0 scanned by syz.0.31 (5246) [ 77.773659][ T5246] FAULT_INJECTION: forcing a failure. [ 77.773659][ T5246] name failslab, interval 1, probability 0, space 0, times 0 [ 77.776362][ T5246] CPU: 1 PID: 5246 Comm: syz.0.31 Tainted: G W syzkaller #0 [ 77.777791][ T5246] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/26/2026 [ 77.779528][ T5246] Call trace: [ 77.780150][ T5246] dump_backtrace+0x0/0x458 [ 77.780930][ T5246] show_stack+0x2c/0x3c [ 77.781609][ T5246] __dump_stack+0x30/0x40 [ 77.782335][ T5246] dump_stack_lvl+0xf4/0x15c [ 77.783064][ T5246] dump_stack+0x1c/0x5c [ 77.783658][ T5246] should_fail+0x3bc/0x514 [ 77.784365][ T5246] __should_failslab+0xbc/0x10c [ 77.785165][ T5246] should_failslab+0x10/0x28 [ 77.785879][ T5246] slab_pre_alloc_hook+0x64/0xe8 [ 77.786721][ T5246] kmem_cache_alloc+0x94/0x3d4 [ 77.787587][ T5246] btrfs_alloc_path+0x5c/0x68 [ 77.788448][ T5246] btrfs_insert_dir_item+0x184/0x3e8 [ 77.789404][ T5246] btrfs_add_link+0x2b0/0xa9c [ 77.790229][ T5246] btrfs_create+0x468/0x514 [ 77.790970][ T5246] path_openat+0xe18/0x2718 [ 77.791734][ T5246] do_filp_open+0x184/0x368 [ 77.792496][ T5246] do_sys_openat2+0x134/0x3f4 [ 77.793266][ T5246] __arm64_sys_openat+0x118/0x14c [ 77.794117][ T5246] invoke_syscall+0x98/0x2b0 [ 77.794849][ T5246] el0_svc_common+0x138/0x258 [ 77.795625][ T5246] do_el0_svc+0x58/0x13c [ 77.796354][ T5246] el0_svc+0x78/0x1d0 [ 77.797084][ T5246] el0t_64_sync_handler+0xcc/0xe4 [ 77.797954][ T5246] el0t_64_sync+0x1a0/0x1a4 [ 77.798826][ T5246] ------------[ cut here ]------------ [ 77.800385][ T5246] WARNING: CPU: 1 PID: 5246 at fs/btrfs/inode.c:6776 btrfs_add_link+0x718/0xa9c [ 77.801595][ T5246] Modules linked in: [ 77.802138][ T5246] CPU: 1 PID: 5246 Comm: syz.0.31 Tainted: G W syzkaller #0 [ 77.803465][ T5246] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/26/2026 [ 77.805056][ T5246] pstate: 62400005 (nZCv daif +PAN -UAO +TCO -DIT -SSBS BTYPE=--) [ 77.806233][ T5246] pc : btrfs_add_link+0x718/0xa9c [ 77.807028][ T5246] lr : btrfs_add_link+0x718/0xa9c [ 77.807797][ T5246] sp : ffff8000204f7580 [ 77.808401][ T5246] x29: ffff8000204f7680 x28: ffff0000de53e210 x27: 0000000000000108 [ 77.809694][ T5246] x26: 00000000fffffff4 x25: 0000000000000000 x24: dfff800000000000 [ 77.811141][ T5246] x23: 0000000000000014 x22: 1fffe0001bca7c4d x21: ffff70000409eeb8 [ 77.812427][ T5246] x20: 00000000fffffff4 x19: ffff0000de53e268 x18: 0000000000000001 [ 77.813756][ T5246] x17: 0000000000000000 x16: ffff800011255484 x15: 00000000ffffffff [ 77.815050][ T5246] x14: 0000000000000001 x13: 1fffe000341f49ab x12: 0000000000ff0100 [ 77.816340][ T5246] x11: 0000000000000000 x10: 0000000000000000 x9 : 5cf6e007d7911900 [ 77.817654][ T5246] x8 : 5cf6e007d7911900 x7 : 0000000000000001 x6 : 0000000000000001 [ 77.818896][ T5246] x5 : ffff8000204f6e98 x4 : ffff80001436f3e0 x3 : ffff800008508fa8 [ 77.820160][ T5246] x2 : 0000000000000001 x1 : 0000000100000000 x0 : 0000000000000026 [ 77.821356][ T5246] Call trace: [ 77.821913][ T5246] btrfs_add_link+0x718/0xa9c [ 77.822650][ T5246] btrfs_create+0x468/0x514 [ 77.823366][ T5246] path_openat+0xe18/0x2718 [ 77.824041][ T5246] do_filp_open+0x184/0x368 [ 77.824792][ T5246] do_sys_openat2+0x134/0x3f4 [ 77.825521][ T5246] __arm64_sys_openat+0x118/0x14c [ 77.826375][ T5246] invoke_syscall+0x98/0x2b0 [ 77.827097][ T5246] el0_svc_common+0x138/0x258 [ 77.827793][ T5246] do_el0_svc+0x58/0x13c [ 77.828490][ T5246] el0_svc+0x78/0x1d0 [ 77.829079][ T5246] el0t_64_sync_handler+0xcc/0xe4 [ 77.829889][ T5246] el0t_64_sync+0x1a0/0x1a4 [ 77.830745][ T5246] irq event stamp: 79532 [ 77.831434][ T5246] hardirqs last enabled at (79531): [] __up_console_sem+0xb4/0xfc [ 77.832949][ T5246] hardirqs last disabled at (79532): [] el1_dbg+0x24/0x80 [ 77.834349][ T5246] softirqs last enabled at (79508): [] handle_softirqs+0xa40/0xbe4 [ 77.835892][ T5246] softirqs last disabled at (79487): [] __irq_exit_rcu+0x240/0x43c [ 77.837452][ T5246] ---[ end trace 9d3a0ca7cd6df5e6 ]--- [ 77.839335][ T5246] BTRFS: error (device loop0) in btrfs_add_link:6776: errno=-12 Out of memory [ 77.840690][ T5246] btrfs_printk: 165 callbacks suppressed [ 77.840700][ T5246] BTRFS info (device loop0): forced readonly 1970/01/01 00:01:17 executed programs: 19 [ 77.978855][ T5268] set_capacity_and_notify: 7 callbacks suppressed [ 77.978864][ T5268] loop0: detected capacity change from 0 to 32768 [ 78.045873][ T5268] BTRFS: device fsid ed167579-eb65-4e76-9a50-61ac97e9b59d devid 1 transid 8 /dev/loop0 scanned by syz.0.32 (5268) [ 78.099302][ T5268] BTRFS info (device loop0): using sha256 (sha256-ce) checksum algorithm [ 78.100863][ T5268] BTRFS info (device loop0): setting nodatacow, compression disabled [ 78.102149][ T5268] BTRFS info (device loop0): setting datacow [ 78.103117][ T5268] BTRFS info (device loop0): doing ref verification [ 78.104180][ T5268] BTRFS info (device loop0): force clearing of disk cache [ 78.106020][ T5268] BTRFS info (device loop0): turning off barriers [ 78.107109][ T5268] BTRFS info (device loop0): use zlib compression, level 3 [ 78.108117][ T5268] BTRFS info (device loop0): using free space tree [ 78.109206][ T5268] BTRFS info (device loop0): has skinny extents [ 78.117785][ T5268] BTRFS info (device loop0): clearing free space tree [ 78.118953][ T5268] BTRFS info (device loop0): clearing compat-ro feature flag for FREE_SPACE_TREE (0x1) [ 78.120625][ T5268] BTRFS info (device loop0): clearing compat-ro feature flag for FREE_SPACE_TREE_VALID (0x2) [ 78.123981][ T5268] BTRFS info (device loop0): creating free space tree [ 78.125797][ T5268] BTRFS info (device loop0): setting compat-ro feature flag for FREE_SPACE_TREE (0x1) [ 78.127231][ T5268] BTRFS info (device loop0): setting compat-ro feature flag for FREE_SPACE_TREE_VALID (0x2) [ 78.131622][ T5268] FAULT_INJECTION: forcing a failure. [ 78.131622][ T5268] name failslab, interval 1, probability 0, space 0, times 0 [ 78.133658][ T5268] CPU: 0 PID: 5268 Comm: syz.0.32 Tainted: G W syzkaller #0 [ 78.134988][ T5268] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/26/2026 [ 78.136551][ T5268] Call trace: [ 78.137057][ T5268] dump_backtrace+0x0/0x458 [ 78.137878][ T5268] show_stack+0x2c/0x3c [ 78.138579][ T5268] __dump_stack+0x30/0x40 [ 78.139248][ T5268] dump_stack_lvl+0xf4/0x15c [ 78.139990][ T5268] dump_stack+0x1c/0x5c [ 78.140663][ T5268] should_fail+0x3bc/0x514 [ 78.141346][ T5268] __should_failslab+0xbc/0x10c [ 78.142128][ T5268] should_failslab+0x10/0x28 [ 78.142866][ T5268] slab_pre_alloc_hook+0x64/0xe8 [ 78.143669][ T5268] kmem_cache_alloc+0x94/0x3d4 [ 78.144408][ T5268] btrfs_alloc_path+0x5c/0x68 [ 78.145176][ T5268] btrfs_insert_dir_item+0x184/0x3e8 [ 78.146012][ T5268] btrfs_add_link+0x2b0/0xa9c [ 78.146818][ T5268] btrfs_create+0x468/0x514 [ 78.147561][ T5268] path_openat+0xe18/0x2718 [ 78.148284][ T5268] do_filp_open+0x184/0x368 [ 78.149036][ T5268] do_sys_openat2+0x134/0x3f4 [ 78.149807][ T5268] __arm64_sys_openat+0x118/0x14c [ 78.150557][ T5268] invoke_syscall+0x98/0x2b0 [ 78.151298][ T5268] el0_svc_common+0x138/0x258 [ 78.152040][ T5268] do_el0_svc+0x58/0x13c [ 78.152747][ T5268] el0_svc+0x78/0x1d0 [ 78.153322][ T5268] el0t_64_sync_handler+0xcc/0xe4 [ 78.154145][ T5268] el0t_64_sync+0x1a0/0x1a4 [ 78.156143][ T5268] ------------[ cut here ]------------ [ 78.157262][ T5268] WARNING: CPU: 0 PID: 5268 at fs/btrfs/inode.c:6776 btrfs_add_link+0x718/0xa9c [ 78.158683][ T5268] Modules linked in: [ 78.159330][ T5268] CPU: 0 PID: 5268 Comm: syz.0.32 Tainted: G W syzkaller #0 [ 78.160700][ T5268] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/26/2026 [ 78.162293][ T5268] pstate: 62400005 (nZCv daif +PAN -UAO +TCO -DIT -SSBS BTYPE=--) [ 78.163561][ T5268] pc : btrfs_add_link+0x718/0xa9c [ 78.164423][ T5268] lr : btrfs_add_link+0x718/0xa9c [ 78.165255][ T5268] sp : ffff8000204f7580 [ 78.165865][ T5268] x29: ffff8000204f7680 x28: ffff0000de625d10 x27: 0000000000000108 [ 78.167275][ T5268] x26: 00000000fffffff4 x25: 0000000000000000 x24: dfff800000000000 [ 78.168649][ T5268] x23: 0000000000000014 x22: 1fffe0001bcc4bad x21: ffff70000409eeb8 [ 78.170087][ T5268] x20: 00000000fffffff4 x19: ffff0000de625d68 x18: 0000000000000001 [ 78.171417][ T5268] x17: 0000000000000000 x16: ffff800011255484 x15: 00000000ffffffff [ 78.172694][ T5268] x14: 0000000000000001 x13: 1fffe000341f07ab x12: 0000000000ff0100 [ 78.173990][ T5268] x11: 0000000000000000 x10: 0000000000000000 x9 : 54dcdca9e6e45c00 [ 78.175224][ T5268] x8 : 54dcdca9e6e45c00 x7 : 0000000000000001 x6 : 0000000000000001 [ 78.176482][ T5268] x5 : ffff8000204f6e98 x4 : ffff80001436f3e0 x3 : ffff800008508fa8 [ 78.177830][ T5268] x2 : 0000000000000001 x1 : 0000000100000000 x0 : 0000000000000026 [ 78.179115][ T5268] Call trace: [ 78.179616][ T5268] btrfs_add_link+0x718/0xa9c [ 78.180434][ T5268] btrfs_create+0x468/0x514 [ 78.181198][ T5268] path_openat+0xe18/0x2718 [ 78.181895][ T5268] do_filp_open+0x184/0x368 [ 78.182680][ T5268] do_sys_openat2+0x134/0x3f4 [ 78.183398][ T5268] __arm64_sys_openat+0x118/0x14c [ 78.184168][ T5268] invoke_syscall+0x98/0x2b0 [ 78.184939][ T5268] el0_svc_common+0x138/0x258 [ 78.185730][ T5268] do_el0_svc+0x58/0x13c [ 78.186408][ T5268] el0_svc+0x78/0x1d0 [ 78.187080][ T5268] el0t_64_sync_handler+0xcc/0xe4 [ 78.188008][ T5268] el0t_64_sync+0x1a0/0x1a4 [ 78.188815][ T5268] irq event stamp: 80258 [ 78.189457][ T5268] hardirqs last enabled at (80257): [] __up_console_sem+0xb4/0xfc [ 78.190923][ T5268] hardirqs last disabled at (80258): [] el1_dbg+0x24/0x80 [ 78.192377][ T5268] softirqs last enabled at (80234): [] handle_softirqs+0xa40/0xbe4 [ 78.193928][ T5268] softirqs last disabled at (80217): [] __irq_exit_rcu+0x240/0x43c [ 78.195409][ T5268] ---[ end trace 9d3a0ca7cd6df5e7 ]--- [ 78.197257][ T5268] BTRFS: error (device loop0) in btrfs_add_link:6776: errno=-12 Out of memory [ 78.198588][ T5268] BTRFS info (device loop0): forced readonly [ 78.373901][ T5290] loop0: detected capacity change from 0 to 32768 [ 78.438956][ T5290] BTRFS: device fsid ed167579-eb65-4e76-9a50-61ac97e9b59d devid 1 transid 8 /dev/loop0 scanned by syz.0.33 (5290) [ 78.443382][ T5290] BTRFS info (device loop0): using sha256 (sha256-ce) checksum algorithm [ 78.445912][ T5290] BTRFS info (device loop0): setting nodatacow, compression disabled [ 78.447343][ T5290] BTRFS info (device loop0): setting datacow [ 78.448378][ T5290] BTRFS info (device loop0): doing ref verification [ 78.449436][ T5290] BTRFS info (device loop0): force clearing of disk cache [ 78.450601][ T5290] BTRFS info (device loop0): turning off barriers [ 78.451743][ T5290] BTRFS info (device loop0): use zlib compression, level 3 [ 78.453343][ T5290] BTRFS info (device loop0): using free space tree [ 78.454330][ T5290] BTRFS info (device loop0): has skinny extents [ 78.462840][ T5290] BTRFS info (device loop0): clearing free space tree [ 78.464017][ T5290] BTRFS info (device loop0): clearing compat-ro feature flag for FREE_SPACE_TREE (0x1) [ 78.466119][ T5290] BTRFS info (device loop0): clearing compat-ro feature flag for FREE_SPACE_TREE_VALID (0x2) [ 78.469196][ T5290] BTRFS info (device loop0): creating free space tree [ 78.470501][ T5290] BTRFS info (device loop0): setting compat-ro feature flag for FREE_SPACE_TREE (0x1) [ 78.472002][ T5290] BTRFS info (device loop0): setting compat-ro feature flag for FREE_SPACE_TREE_VALID (0x2) [ 78.476563][ T5290] FAULT_INJECTION: forcing a failure. [ 78.476563][ T5290] name failslab, interval 1, probability 0, space 0, times 0 [ 78.478563][ T5290] CPU: 1 PID: 5290 Comm: syz.0.33 Tainted: G W syzkaller #0 [ 78.479951][ T5290] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/26/2026 [ 78.481610][ T5290] Call trace: [ 78.482275][ T5290] dump_backtrace+0x0/0x458 [ 78.483072][ T5290] show_stack+0x2c/0x3c [ 78.483746][ T5290] __dump_stack+0x30/0x40 [ 78.484424][ T5290] dump_stack_lvl+0xf4/0x15c [ 78.485196][ T5290] dump_stack+0x1c/0x5c [ 78.485945][ T5290] should_fail+0x3bc/0x514 [ 78.486680][ T5290] __should_failslab+0xbc/0x10c [ 78.487489][ T5290] should_failslab+0x10/0x28 [ 78.488266][ T5290] slab_pre_alloc_hook+0x64/0xe8 [ 78.489085][ T5290] kmem_cache_alloc+0x94/0x3d4 [ 78.489915][ T5290] btrfs_alloc_path+0x5c/0x68 [ 78.490707][ T5290] btrfs_insert_dir_item+0x184/0x3e8 [ 78.491578][ T5290] btrfs_add_link+0x2b0/0xa9c [ 78.492346][ T5290] btrfs_create+0x468/0x514 [ 78.493090][ T5290] path_openat+0xe18/0x2718 [ 78.493836][ T5290] do_filp_open+0x184/0x368 [ 78.494606][ T5290] do_sys_openat2+0x134/0x3f4 [ 78.495396][ T5290] __arm64_sys_openat+0x118/0x14c [ 78.496227][ T5290] invoke_syscall+0x98/0x2b0 [ 78.497056][ T5290] el0_svc_common+0x138/0x258 [ 78.497865][ T5290] do_el0_svc+0x58/0x13c [ 78.498597][ T5290] el0_svc+0x78/0x1d0 [ 78.499280][ T5290] el0t_64_sync_handler+0xcc/0xe4 [ 78.500124][ T5290] el0t_64_sync+0x1a0/0x1a4 [ 78.500964][ T5290] ------------[ cut here ]------------ [ 78.502380][ T5290] WARNING: CPU: 1 PID: 5290 at fs/btrfs/inode.c:6776 btrfs_add_link+0x718/0xa9c [ 78.503845][ T5290] Modules linked in: [ 78.504481][ T5290] CPU: 1 PID: 5290 Comm: syz.0.33 Tainted: G W syzkaller #0 [ 78.505805][ T5290] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/26/2026 [ 78.507405][ T5290] pstate: 62400005 (nZCv daif +PAN -UAO +TCO -DIT -SSBS BTYPE=--) [ 78.508636][ T5290] pc : btrfs_add_link+0x718/0xa9c [ 78.509457][ T5290] lr : btrfs_add_link+0x718/0xa9c [ 78.510231][ T5290] sp : ffff800021287580 [ 78.510879][ T5290] x29: ffff800021287680 x28: ffff0000de53e8f0 x27: 0000000000000108 [ 78.512192][ T5290] x26: 00000000fffffff4 x25: 0000000000000000 x24: dfff800000000000 [ 78.513500][ T5290] x23: 0000000000000014 x22: 1fffe0001bca7d29 x21: ffff700004250eb8 [ 78.514821][ T5290] x20: 00000000fffffff4 x19: ffff0000de53e948 x18: 0000000000000001 [ 78.516106][ T5290] x17: 0000000000000000 x16: ffff800011255484 x15: 00000000ffffffff [ 78.517377][ T5290] x14: 0000000000000001 x13: 1fffe000341f49ab x12: 0000000000ff0100 [ 78.518697][ T5290] x11: 0000000000000000 x10: 0000000000000000 x9 : 46821fcc0c23e500 [ 78.519929][ T5290] x8 : 46821fcc0c23e500 x7 : 0000000000000001 x6 : 0000000000000001 [ 78.521182][ T5290] x5 : ffff800021286e98 x4 : ffff80001436f3e0 x3 : ffff800008508fa8 [ 78.522456][ T5290] x2 : 0000000000000001 x1 : 0000000100000000 x0 : 0000000000000026 [ 78.523744][ T5290] Call trace: [ 78.524228][ T5290] btrfs_add_link+0x718/0xa9c [ 78.524949][ T5290] btrfs_create+0x468/0x514 [ 78.525611][ T5290] path_openat+0xe18/0x2718 [ 78.526329][ T5290] do_filp_open+0x184/0x368 [ 78.526999][ T5290] do_sys_openat2+0x134/0x3f4 [ 78.527755][ T5290] __arm64_sys_openat+0x118/0x14c [ 78.528537][ T5290] invoke_syscall+0x98/0x2b0 [ 78.529246][ T5290] el0_svc_common+0x138/0x258 [ 78.529940][ T5290] do_el0_svc+0x58/0x13c [ 78.530653][ T5290] el0_svc+0x78/0x1d0 [ 78.531301][ T5290] el0t_64_sync_handler+0xcc/0xe4 [ 78.532114][ T5290] el0t_64_sync+0x1a0/0x1a4 [ 78.532877][ T5290] irq event stamp: 79772 [ 78.533522][ T5290] hardirqs last enabled at (79771): [] __up_console_sem+0xb4/0xfc [ 78.535027][ T5290] hardirqs last disabled at (79772): [] el1_dbg+0x24/0x80 [ 78.536351][ T5290] softirqs last enabled at (79752): [] handle_softirqs+0xa40/0xbe4 [ 78.537755][ T5290] softirqs last disabled at (79739): [] __irq_exit_rcu+0x240/0x43c [ 78.539275][ T5290] ---[ end trace 9d3a0ca7cd6df5e8 ]--- [ 78.540810][ T5290] BTRFS: error (device loop0) in btrfs_add_link:6776: errno=-12 Out of memory [ 78.542596][ T5290] BTRFS info (device loop0): forced readonly [ 78.724118][ T5312] loop0: detected capacity change from 0 to 32768 [ 78.766268][ T5312] BTRFS: device fsid ed167579-eb65-4e76-9a50-61ac97e9b59d devid 1 transid 8 /dev/loop0 scanned by syz.0.34 (5312) [ 78.776185][ T5312] BTRFS info (device loop0): using sha256 (sha256-ce) checksum algorithm [ 78.777607][ T5312] BTRFS info (device loop0): setting nodatacow, compression disabled [ 78.778849][ T5312] BTRFS info (device loop0): setting datacow [ 78.779816][ T5312] BTRFS info (device loop0): doing ref verification [ 78.780813][ T5312] BTRFS info (device loop0): force clearing of disk cache [ 78.781946][ T5312] BTRFS info (device loop0): turning off barriers [ 78.782970][ T5312] BTRFS info (device loop0): use zlib compression, level 3 [ 78.784083][ T5312] BTRFS info (device loop0): using free space tree [ 78.785310][ T5312] BTRFS info (device loop0): has skinny extents [ 78.794023][ T5312] BTRFS info (device loop0): clearing free space tree [ 78.795346][ T5312] BTRFS info (device loop0): clearing compat-ro feature flag for FREE_SPACE_TREE (0x1) [ 78.796891][ T5312] BTRFS info (device loop0): clearing compat-ro feature flag for FREE_SPACE_TREE_VALID (0x2) [ 78.800380][ T5312] BTRFS info (device loop0): creating free space tree [ 78.801752][ T5312] BTRFS info (device loop0): setting compat-ro feature flag for FREE_SPACE_TREE (0x1) [ 78.803193][ T5312] BTRFS info (device loop0): setting compat-ro feature flag for FREE_SPACE_TREE_VALID (0x2) [ 78.808242][ T5312] FAULT_INJECTION: forcing a failure. [ 78.808242][ T5312] name failslab, interval 1, probability 0, space 0, times 0 [ 78.810306][ T5312] CPU: 0 PID: 5312 Comm: syz.0.34 Tainted: G W syzkaller #0 [ 78.811671][ T5312] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/26/2026 [ 78.813219][ T5312] Call trace: [ 78.813702][ T5312] dump_backtrace+0x0/0x458 [ 78.814434][ T5312] show_stack+0x2c/0x3c [ 78.815152][ T5312] __dump_stack+0x30/0x40 [ 78.815894][ T5312] dump_stack_lvl+0xf4/0x15c [ 78.816707][ T5312] dump_stack+0x1c/0x5c [ 78.817404][ T5312] should_fail+0x3bc/0x514 [ 78.818176][ T5312] __should_failslab+0xbc/0x10c [ 78.819021][ T5312] should_failslab+0x10/0x28 [ 78.819829][ T5312] slab_pre_alloc_hook+0x64/0xe8 [ 78.820706][ T5312] kmem_cache_alloc+0x94/0x3d4 [ 78.821494][ T5312] btrfs_alloc_path+0x5c/0x68 [ 78.822226][ T5312] btrfs_insert_dir_item+0x184/0x3e8 [ 78.823067][ T5312] btrfs_add_link+0x2b0/0xa9c [ 78.823821][ T5312] btrfs_create+0x468/0x514 [ 78.824573][ T5312] path_openat+0xe18/0x2718 [ 78.825348][ T5312] do_filp_open+0x184/0x368 [ 78.826132][ T5312] do_sys_openat2+0x134/0x3f4 [ 78.827038][ T5312] __arm64_sys_openat+0x118/0x14c [ 78.827814][ T5312] invoke_syscall+0x98/0x2b0 [ 78.828525][ T5312] el0_svc_common+0x138/0x258 [ 78.829249][ T5312] do_el0_svc+0x58/0x13c [ 78.829908][ T5312] el0_svc+0x78/0x1d0 [ 78.830551][ T5312] el0t_64_sync_handler+0xcc/0xe4 [ 78.831357][ T5312] el0t_64_sync+0x1a0/0x1a4 [ 78.834216][ T5312] ------------[ cut here ]------------ [ 78.835240][ T5312] WARNING: CPU: 0 PID: 5312 at fs/btrfs/inode.c:6776 btrfs_add_link+0x718/0xa9c [ 78.836627][ T5312] Modules linked in: [ 78.837238][ T5312] CPU: 0 PID: 5312 Comm: syz.0.34 Tainted: G W syzkaller #0 [ 78.838565][ T5312] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/26/2026 [ 78.840210][ T5312] pstate: 62400005 (nZCv daif +PAN -UAO +TCO -DIT -SSBS BTYPE=--) [ 78.841528][ T5312] pc : btrfs_add_link+0x718/0xa9c [ 78.842275][ T5312] lr : btrfs_add_link+0x718/0xa9c [ 78.843092][ T5312] sp : ffff8000214e7580 [ 78.843756][ T5312] x29: ffff8000214e7680 x28: ffff0000de596f20 x27: 0000000000000108 [ 78.845077][ T5312] x26: 00000000fffffff4 x25: 0000000000000000 x24: dfff800000000000 [ 78.846360][ T5312] x23: 0000000000000014 x22: 1fffe0001bcb2def x21: ffff70000429ceb8 [ 78.847624][ T5312] x20: 00000000fffffff4 x19: ffff0000de596f78 x18: 0000000000000001 [ 78.848844][ T5312] x17: 0000000000000000 x16: ffff800011255484 x15: 00000000ffffffff [ 78.850209][ T5312] x14: 0000000000000001 x13: 1fffe000341f07ab x12: 0000000000ff0100 [ 78.851586][ T5312] x11: 0000000000000000 x10: 0000000000000000 x9 : d05ac55f24404d00 [ 78.852880][ T5312] x8 : d05ac55f24404d00 x7 : 0000000000000001 x6 : 0000000000000001 [ 78.854124][ T5312] x5 : ffff8000214e6e98 x4 : ffff80001436f3e0 x3 : ffff800008508fa8 [ 78.855386][ T5312] x2 : 0000000000000001 x1 : 0000000100000000 x0 : 0000000000000026 [ 78.856662][ T5312] Call trace: [ 78.857163][ T5312] btrfs_add_link+0x718/0xa9c [ 78.857933][ T5312] btrfs_create+0x468/0x514 [ 78.858673][ T5312] path_openat+0xe18/0x2718 [ 78.859422][ T5312] do_filp_open+0x184/0x368 [ 78.860180][ T5312] do_sys_openat2+0x134/0x3f4 [ 78.860907][ T5312] __arm64_sys_openat+0x118/0x14c [ 78.861721][ T5312] invoke_syscall+0x98/0x2b0 [ 78.862499][ T5312] el0_svc_common+0x138/0x258 [ 78.863310][ T5312] do_el0_svc+0x58/0x13c [ 78.863999][ T5312] el0_svc+0x78/0x1d0 [ 78.864666][ T5312] el0t_64_sync_handler+0xcc/0xe4 [ 78.865547][ T5312] el0t_64_sync+0x1a0/0x1a4 [ 78.866292][ T5312] irq event stamp: 79514 [ 78.866978][ T5312] hardirqs last enabled at (79513): [] __up_console_sem+0xb4/0xfc [ 78.868553][ T5312] hardirqs last disabled at (79514): [] el1_dbg+0x24/0x80 [ 78.870013][ T5312] softirqs last enabled at (79504): [] handle_softirqs+0xa40/0xbe4 [ 78.871578][ T5312] softirqs last disabled at (79491): [] __irq_exit_rcu+0x240/0x43c [ 78.873036][ T5312] ---[ end trace 9d3a0ca7cd6df5e9 ]--- [ 78.874926][ T5312] BTRFS: error (device loop0) in btrfs_add_link:6776: errno=-12 Out of memory [ 78.876381][ T5312] BTRFS info (device loop0): forced readonly [ 79.054242][ T5334] loop0: detected capacity change from 0 to 32768 [ 79.109527][ T5334] BTRFS: device fsid ed167579-eb65-4e76-9a50-61ac97e9b59d devid 1 transid 8 /dev/loop0 scanned by syz.0.35 (5334) [ 79.112833][ T5334] BTRFS info (device loop0): using sha256 (sha256-ce) checksum algorithm [ 79.114148][ T5334] BTRFS info (device loop0): setting nodatacow, compression disabled [ 79.117072][ T5334] BTRFS info (device loop0): setting datacow [ 79.117998][ T5334] BTRFS info (device loop0): doing ref verification [ 79.119010][ T5334] BTRFS info (device loop0): force clearing of disk cache [ 79.120092][ T5334] BTRFS info (device loop0): turning off barriers [ 79.121150][ T5334] BTRFS info (device loop0): use zlib compression, level 3 [ 79.122349][ T5334] BTRFS info (device loop0): using free space tree [ 79.123336][ T5334] BTRFS info (device loop0): has skinny extents [ 79.131434][ T5334] BTRFS info (device loop0): clearing free space tree [ 79.132709][ T5334] BTRFS info (device loop0): clearing compat-ro feature flag for FREE_SPACE_TREE (0x1) [ 79.134181][ T5334] BTRFS info (device loop0): clearing compat-ro feature flag for FREE_SPACE_TREE_VALID (0x2) [ 79.138260][ T5334] BTRFS info (device loop0): creating free space tree [ 79.139696][ T5334] BTRFS info (device loop0): setting compat-ro feature flag for FREE_SPACE_TREE (0x1) [ 79.141106][ T5334] BTRFS info (device loop0): setting compat-ro feature flag for FREE_SPACE_TREE_VALID (0x2) [ 79.145777][ T5334] FAULT_INJECTION: forcing a failure. [ 79.145777][ T5334] name failslab, interval 1, probability 0, space 0, times 0 [ 79.147790][ T5334] CPU: 0 PID: 5334 Comm: syz.0.35 Tainted: G W syzkaller #0 [ 79.149149][ T5334] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/26/2026 [ 79.150691][ T5334] Call trace: [ 79.151185][ T5334] dump_backtrace+0x0/0x458 [ 79.151865][ T5334] show_stack+0x2c/0x3c [ 79.152529][ T5334] __dump_stack+0x30/0x40 [ 79.153235][ T5334] dump_stack_lvl+0xf4/0x15c [ 79.153988][ T5334] dump_stack+0x1c/0x5c [ 79.154647][ T5334] should_fail+0x3bc/0x514 [ 79.155371][ T5334] __should_failslab+0xbc/0x10c [ 79.156145][ T5334] should_failslab+0x10/0x28 [ 79.156848][ T5334] slab_pre_alloc_hook+0x64/0xe8 [ 79.157684][ T5334] kmem_cache_alloc+0x94/0x3d4 [ 79.158431][ T5334] btrfs_get_or_create_delayed_node+0x114/0x4a8 [ 79.159384][ T5334] btrfs_delayed_update_inode+0x3c/0x1b68 [ 79.160308][ T5334] btrfs_update_inode+0x210/0x3d4 [ 79.161141][ T5334] btrfs_create+0x364/0x514 [ 79.161812][ T5334] path_openat+0xe18/0x2718 [ 79.162530][ T5334] do_filp_open+0x184/0x368 [ 79.163281][ T5334] do_sys_openat2+0x134/0x3f4 [ 79.163991][ T5334] __arm64_sys_openat+0x118/0x14c [ 79.164868][ T5334] invoke_syscall+0x98/0x2b0 [ 79.165630][ T5334] el0_svc_common+0x138/0x258 [ 79.166365][ T5334] do_el0_svc+0x58/0x13c [ 79.167076][ T5334] el0_svc+0x78/0x1d0 [ 79.167752][ T5334] el0t_64_sync_handler+0xcc/0xe4 [ 79.168604][ T5334] el0t_64_sync+0x1a0/0x1a4 [ 79.308200][ T5356] loop0: detected capacity change from 0 to 32768 [ 79.385957][ T5356] BTRFS: device fsid ed167579-eb65-4e76-9a50-61ac97e9b59d devid 1 transid 8 /dev/loop0 scanned by syz.0.36 (5356) [ 79.389140][ T5356] BTRFS info (device loop0): using sha256 (sha256-ce) checksum algorithm [ 79.390695][ T5356] BTRFS info (device loop0): setting nodatacow, compression disabled [ 79.391944][ T5356] BTRFS info (device loop0): setting datacow [ 79.392841][ T5356] BTRFS info (device loop0): doing ref verification [ 79.393857][ T5356] BTRFS info (device loop0): force clearing of disk cache [ 79.395479][ T5356] BTRFS info (device loop0): turning off barriers [ 79.396544][ T5356] BTRFS info (device loop0): use zlib compression, level 3 [ 79.397724][ T5356] BTRFS info (device loop0): using free space tree [ 79.398776][ T5356] BTRFS info (device loop0): has skinny extents [ 79.406799][ T5356] BTRFS info (device loop0): clearing free space tree [ 79.407934][ T5356] BTRFS info (device loop0): clearing compat-ro feature flag for FREE_SPACE_TREE (0x1) [ 79.409601][ T5356] BTRFS info (device loop0): clearing compat-ro feature flag for FREE_SPACE_TREE_VALID (0x2) [ 79.412668][ T5356] BTRFS info (device loop0): creating free space tree [ 79.414070][ T5356] BTRFS info (device loop0): setting compat-ro feature flag for FREE_SPACE_TREE (0x1) [ 79.416102][ T5356] BTRFS info (device loop0): setting compat-ro feature flag for FREE_SPACE_TREE_VALID (0x2) [ 79.420604][ T5356] FAULT_INJECTION: forcing a failure. [ 79.420604][ T5356] name failslab, interval 1, probability 0, space 0, times 0 [ 79.422591][ T5356] CPU: 1 PID: 5356 Comm: syz.0.36 Tainted: G W syzkaller #0 [ 79.423866][ T5356] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/26/2026 [ 79.425494][ T5356] Call trace: [ 79.426077][ T5356] dump_backtrace+0x0/0x458 [ 79.426834][ T5356] show_stack+0x2c/0x3c [ 79.427518][ T5356] __dump_stack+0x30/0x40 [ 79.428240][ T5356] dump_stack_lvl+0xf4/0x15c [ 79.428999][ T5356] dump_stack+0x1c/0x5c [ 79.429613][ T5356] should_fail+0x3bc/0x514 [ 79.430282][ T5356] __should_failslab+0xbc/0x10c [ 79.431070][ T5356] should_failslab+0x10/0x28 [ 79.431790][ T5356] slab_pre_alloc_hook+0x64/0xe8 [ 79.432530][ T5356] kmem_cache_alloc+0x94/0x3d4 [ 79.433289][ T5356] btrfs_get_or_create_delayed_node+0x114/0x4a8 [ 79.434256][ T5356] btrfs_delayed_update_inode+0x3c/0x1b68 [ 79.435225][ T5356] btrfs_update_inode+0x210/0x3d4 [ 79.436036][ T5356] btrfs_create+0x364/0x514 [ 79.436770][ T5356] path_openat+0xe18/0x2718 [ 79.437461][ T5356] do_filp_open+0x184/0x368 [ 79.438261][ T5356] do_sys_openat2+0x134/0x3f4 [ 79.439048][ T5356] __arm64_sys_openat+0x118/0x14c [ 79.439847][ T5356] invoke_syscall+0x98/0x2b0 [ 79.440624][ T5356] el0_svc_common+0x138/0x258 [ 79.441356][ T5356] do_el0_svc+0x58/0x13c [ 79.442040][ T5356] el0_svc+0x78/0x1d0 [ 79.442726][ T5356] el0t_64_sync_handler+0xcc/0xe4 [ 79.443541][ T5356] el0t_64_sync+0x1a0/0x1a4 [ 79.603748][ T5378] loop0: detected capacity change from 0 to 32768 [ 79.655888][ T5378] BTRFS: device fsid ed167579-eb65-4e76-9a50-61ac97e9b59d devid 1 transid 8 /dev/loop0 scanned by syz.0.37 (5378) [ 79.696028][ T5378] BTRFS info (device loop0): using sha256 (sha256-ce) checksum algorithm [ 79.697488][ T5378] BTRFS info (device loop0): setting nodatacow, compression disabled [ 79.698878][ T5378] BTRFS info (device loop0): setting datacow [ 79.699919][ T5378] BTRFS info (device loop0): doing ref verification [ 79.700945][ T5378] BTRFS info (device loop0): force clearing of disk cache [ 79.702063][ T5378] BTRFS info (device loop0): turning off barriers [ 79.703223][ T5378] BTRFS info (device loop0): use zlib compression, level 3 [ 79.704414][ T5378] BTRFS info (device loop0): using free space tree [ 79.705856][ T5378] BTRFS info (device loop0): has skinny extents [ 79.718822][ T5378] BTRFS info (device loop0): clearing free space tree [ 79.719954][ T5378] BTRFS info (device loop0): clearing compat-ro feature flag for FREE_SPACE_TREE (0x1) [ 79.721530][ T5378] BTRFS info (device loop0): clearing compat-ro feature flag for FREE_SPACE_TREE_VALID (0x2) [ 79.725550][ T5378] BTRFS info (device loop0): creating free space tree [ 79.726923][ T5378] BTRFS info (device loop0): setting compat-ro feature flag for FREE_SPACE_TREE (0x1) [ 79.728579][ T5378] BTRFS info (device loop0): setting compat-ro feature flag for FREE_SPACE_TREE_VALID (0x2) [ 79.733288][ T5378] FAULT_INJECTION: forcing a failure. [ 79.733288][ T5378] name failslab, interval 1, probability 0, space 0, times 0 [ 79.736197][ T5378] CPU: 1 PID: 5378 Comm: syz.0.37 Tainted: G W syzkaller #0 [ 79.737607][ T5378] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/26/2026 [ 79.739240][ T5378] Call trace: [ 79.739760][ T5378] dump_backtrace+0x0/0x458 [ 79.740510][ T5378] show_stack+0x2c/0x3c [ 79.741231][ T5378] __dump_stack+0x30/0x40 [ 79.741975][ T5378] dump_stack_lvl+0xf4/0x15c [ 79.742750][ T5378] dump_stack+0x1c/0x5c [ 79.743433][ T5378] should_fail+0x3bc/0x514 [ 79.744158][ T5378] __should_failslab+0xbc/0x10c [ 79.745023][ T5378] should_failslab+0x10/0x28 [ 79.745777][ T5378] slab_pre_alloc_hook+0x64/0xe8 [ 79.746635][ T5378] kmem_cache_alloc+0x94/0x3d4 [ 79.747451][ T5378] btrfs_alloc_path+0x5c/0x68 [ 79.748198][ T5378] btrfs_insert_dir_item+0x184/0x3e8 [ 79.749050][ T5378] btrfs_add_link+0x2b0/0xa9c [ 79.749784][ T5378] btrfs_create+0x468/0x514 [ 79.750539][ T5378] path_openat+0xe18/0x2718 [ 79.751243][ T5378] do_filp_open+0x184/0x368 [ 79.751941][ T5378] do_sys_openat2+0x134/0x3f4 [ 79.752690][ T5378] __arm64_sys_openat+0x118/0x14c [ 79.753495][ T5378] invoke_syscall+0x98/0x2b0 [ 79.754247][ T5378] el0_svc_common+0x138/0x258 [ 79.755022][ T5378] do_el0_svc+0x58/0x13c [ 79.755821][ T5378] el0_svc+0x78/0x1d0 [ 79.756529][ T5378] el0t_64_sync_handler+0xcc/0xe4 [ 79.757371][ T5378] el0t_64_sync+0x1a0/0x1a4 [ 79.758706][ T5378] ------------[ cut here ]------------ [ 79.760064][ T5378] WARNING: CPU: 1 PID: 5378 at fs/btrfs/inode.c:6776 btrfs_add_link+0x718/0xa9c [ 79.761296][ T5378] Modules linked in: [ 79.761923][ T5378] CPU: 1 PID: 5378 Comm: syz.0.37 Tainted: G W syzkaller #0 [ 79.763344][ T5378] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/26/2026 [ 79.764986][ T5378] pstate: 62400005 (nZCv daif +PAN -UAO +TCO -DIT -SSBS BTYPE=--) [ 79.766271][ T5378] pc : btrfs_add_link+0x718/0xa9c [ 79.767119][ T5378] lr : btrfs_add_link+0x718/0xa9c [ 79.767961][ T5378] sp : ffff800021c27580 [ 79.768618][ T5378] x29: ffff800021c27680 x28: ffff0000de53e160 x27: 0000000000000108 [ 79.769941][ T5378] x26: 00000000fffffff4 x25: 0000000000000000 x24: dfff800000000000 [ 79.771373][ T5378] x23: 0000000000000014 x22: 1fffe0001bca7c37 x21: ffff700004384eb8 [ 79.772651][ T5378] x20: 00000000fffffff4 x19: ffff0000de53e1b8 x18: 0000000000000001 [ 79.773997][ T5378] x17: 0000000000000000 x16: ffff800011255484 x15: 00000000ffffffff [ 79.775301][ T5378] x14: 0000000000000001 x13: 1fffe000341f49ab x12: 0000000000ff0100 [ 79.776607][ T5378] x11: 0000000000000000 x10: 0000000000000000 x9 : e54e2c8378d93a00 [ 79.777908][ T5378] x8 : e54e2c8378d93a00 x7 : 0000000000000001 x6 : 0000000000000001 [ 79.779253][ T5378] x5 : ffff800021c26e98 x4 : ffff80001436f3e0 x3 : ffff800008508fa8 [ 79.780676][ T5378] x2 : 0000000000000001 x1 : 0000000100000000 x0 : 0000000000000026 [ 79.782062][ T5378] Call trace: [ 79.782664][ T5378] btrfs_add_link+0x718/0xa9c [ 79.783429][ T5378] btrfs_create+0x468/0x514 [ 79.784134][ T5378] path_openat+0xe18/0x2718 [ 79.784852][ T5378] do_filp_open+0x184/0x368 [ 79.785578][ T5378] do_sys_openat2+0x134/0x3f4 [ 79.786278][ T5378] __arm64_sys_openat+0x118/0x14c [ 79.787014][ T5378] invoke_syscall+0x98/0x2b0 [ 79.787687][ T5378] el0_svc_common+0x138/0x258 [ 79.788488][ T5378] do_el0_svc+0x58/0x13c [ 79.789301][ T5378] el0_svc+0x78/0x1d0 [ 79.789970][ T5378] el0t_64_sync_handler+0xcc/0xe4 [ 79.790797][ T5378] el0t_64_sync+0x1a0/0x1a4 [ 79.791615][ T5378] irq event stamp: 80066 [ 79.792390][ T5378] hardirqs last enabled at (80065): [] __up_console_sem+0xb4/0xfc [ 79.793879][ T5378] hardirqs last disabled at (80066): [] el1_dbg+0x24/0x80 [ 79.795344][ T5378] softirqs last enabled at (80042): [] handle_softirqs+0xa40/0xbe4 [ 79.796965][ T5378] softirqs last disabled at (80005): [] __irq_exit_rcu+0x240/0x43c [ 79.798696][ T5378] ---[ end trace 9d3a0ca7cd6df5ea ]--- [ 79.801101][ T5378] BTRFS: error (device loop0) in btrfs_add_link:6776: errno=-12 Out of memory [ 79.802494][ T5378] BTRFS info (device loop0): forced readonly [ 79.975378][ T5400] loop0: detected capacity change from 0 to 32768 [ 80.027742][ T5400] BTRFS: device fsid ed167579-eb65-4e76-9a50-61ac97e9b59d devid 1 transid 8 /dev/loop0 scanned by syz.0.38 (5400) [ 80.030736][ T5400] BTRFS info (device loop0): using sha256 (sha256-ce) checksum algorithm [ 80.032249][ T5400] BTRFS info (device loop0): setting nodatacow, compression disabled [ 80.033650][ T5400] BTRFS info (device loop0): setting datacow [ 80.034715][ T5400] BTRFS info (device loop0): doing ref verification [ 80.035850][ T5400] BTRFS info (device loop0): force clearing of disk cache [ 80.050491][ T5400] FAULT_INJECTION: forcing a failure. [ 80.050491][ T5400] name failslab, interval 1, probability 0, space 0, times 0 [ 80.052915][ T5400] CPU: 0 PID: 5400 Comm: syz.0.38 Tainted: G W syzkaller #0 [ 80.054213][ T5400] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/26/2026 [ 80.055947][ T5400] Call trace: [ 80.056424][ T5400] dump_backtrace+0x0/0x458 [ 80.057213][ T5400] show_stack+0x2c/0x3c [ 80.057892][ T5400] __dump_stack+0x30/0x40 [ 80.058602][ T5400] dump_stack_lvl+0xf4/0x15c [ 80.059324][ T5400] dump_stack+0x1c/0x5c [ 80.059960][ T5400] should_fail+0x3bc/0x514 [ 80.060688][ T5400] __should_failslab+0xbc/0x10c [ 80.061503][ T5400] should_failslab+0x10/0x28 [ 80.062178][ T5400] slab_pre_alloc_hook+0x64/0xe8 [ 80.062927][ T5400] kmem_cache_alloc+0x94/0x3d4 [ 80.063711][ T5400] btrfs_alloc_path+0x5c/0x68 [ 80.064454][ T5400] btrfs_insert_dir_item+0x184/0x3e8 [ 80.065342][ T5400] btrfs_add_link+0x2b0/0xa9c [ 80.066125][ T5400] btrfs_create+0x468/0x514 [ 80.066876][ T5400] path_openat+0xe18/0x2718 [ 80.067602][ T5400] do_filp_open+0x184/0x368 [ 80.068320][ T5400] do_sys_openat2+0x134/0x3f4 [ 80.069087][ T5400] __arm64_sys_openat+0x118/0x14c [ 80.069938][ T5400] invoke_syscall+0x98/0x2b0 [ 80.070659][ T5400] el0_svc_common+0x138/0x258 [ 80.071416][ T5400] do_el0_svc+0x58/0x13c [ 80.072065][ T5400] el0_svc+0x78/0x1d0 [ 80.072647][ T5400] el0t_64_sync_handler+0xcc/0xe4 [ 80.073398][ T5400] el0t_64_sync+0x1a0/0x1a4 [ 80.075310][ T5400] ------------[ cut here ]------------ [ 80.076263][ T5400] WARNING: CPU: 0 PID: 5400 at fs/btrfs/inode.c:6776 btrfs_add_link+0x718/0xa9c [ 80.077684][ T5400] Modules linked in: [ 80.078264][ T5400] CPU: 0 PID: 5400 Comm: syz.0.38 Tainted: G W syzkaller #0 [ 80.079661][ T5400] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/26/2026 [ 80.081340][ T5400] pstate: 62400005 (nZCv daif +PAN -UAO +TCO -DIT -SSBS BTYPE=--) [ 80.082597][ T5400] pc : btrfs_add_link+0x718/0xa9c [ 80.083314][ T5400] lr : btrfs_add_link+0x718/0xa9c [ 80.084019][ T5400] sp : ffff800021c27580 [ 80.084657][ T5400] x29: ffff800021c27680 x28: ffff0000de596580 x27: 0000000000000108 [ 80.085835][ T5400] x26: 00000000fffffff4 x25: 0000000000000000 x24: dfff800000000000 [ 80.087024][ T5400] x23: 0000000000000014 x22: 1fffe0001bcb2cbb x21: ffff700004384eb8 [ 80.088430][ T5400] x20: 00000000fffffff4 x19: ffff0000de5965d8 x18: 0000000000000001 [ 80.089657][ T5400] x17: 0000000000000000 x16: ffff800011255484 x15: 00000000ffffffff [ 80.091042][ T5400] x14: 0000000000000001 x13: 1fffe000341f07ab x12: 0000000000ff0100 [ 80.092304][ T5400] x11: 0000000000000000 x10: 0000000000000000 x9 : da6ad4be6814e100 [ 80.093585][ T5400] x8 : da6ad4be6814e100 x7 : 0000000000000001 x6 : 0000000000000001 [ 80.095079][ T5400] x5 : ffff800021c26e98 x4 : ffff80001436f3e0 x3 : ffff800008508fa8 [ 80.096405][ T5400] x2 : 0000000000000001 x1 : 0000000100000000 x0 : 0000000000000026 [ 80.097702][ T5400] Call trace: [ 80.098208][ T5400] btrfs_add_link+0x718/0xa9c [ 80.099016][ T5400] btrfs_create+0x468/0x514 [ 80.099747][ T5400] path_openat+0xe18/0x2718 [ 80.100484][ T5400] do_filp_open+0x184/0x368 [ 80.101188][ T5400] do_sys_openat2+0x134/0x3f4 [ 80.102041][ T5400] __arm64_sys_openat+0x118/0x14c [ 80.102797][ T5400] invoke_syscall+0x98/0x2b0 [ 80.103467][ T5400] el0_svc_common+0x138/0x258 [ 80.104230][ T5400] do_el0_svc+0x58/0x13c [ 80.104906][ T5400] el0_svc+0x78/0x1d0 [ 80.105514][ T5400] el0t_64_sync_handler+0xcc/0xe4 [ 80.106336][ T5400] el0t_64_sync+0x1a0/0x1a4 [ 80.106993][ T5400] irq event stamp: 79938 [ 80.107619][ T5400] hardirqs last enabled at (79937): [] __up_console_sem+0xb4/0xfc [ 80.109285][ T5400] hardirqs last disabled at (79938): [] el1_dbg+0x24/0x80 [ 80.110663][ T5400] softirqs last enabled at (79918): [] handle_softirqs+0xa40/0xbe4 [ 80.112219][ T5400] softirqs last disabled at (79909): [] __irq_exit_rcu+0x240/0x43c [ 80.113753][ T5400] ---[ end trace 9d3a0ca7cd6df5eb ]--- [ 80.114986][ T5400] BTRFS: error (device loop0) in btrfs_add_link:6776: errno=-12 Out of memory [ 80.249061][ T5422] loop0: detected capacity change from 0 to 32768 [ 80.285807][ T5422] BTRFS: device fsid ed167579-eb65-4e76-9a50-61ac97e9b59d devid 1 transid 8 /dev/loop0 scanned by syz.0.39 (5422) [ 80.350681][ T5422] FAULT_INJECTION: forcing a failure. [ 80.350681][ T5422] name failslab, interval 1, probability 0, space 0, times 0 [ 80.352675][ T5422] CPU: 1 PID: 5422 Comm: syz.0.39 Tainted: G W syzkaller #0 [ 80.353976][ T5422] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/26/2026 [ 80.355599][ T5422] Call trace: [ 80.356134][ T5422] dump_backtrace+0x0/0x458 [ 80.356842][ T5422] show_stack+0x2c/0x3c [ 80.357423][ T5422] __dump_stack+0x30/0x40 [ 80.358092][ T5422] dump_stack_lvl+0xf4/0x15c [ 80.358838][ T5422] dump_stack+0x1c/0x5c [ 80.359484][ T5422] should_fail+0x3bc/0x514 [ 80.360133][ T5422] __should_failslab+0xbc/0x10c [ 80.360860][ T5422] should_failslab+0x10/0x28 [ 80.361547][ T5422] slab_pre_alloc_hook+0x64/0xe8 [ 80.362290][ T5422] kmem_cache_alloc+0x94/0x3d4 [ 80.362994][ T5422] btrfs_get_or_create_delayed_node+0x114/0x4a8 [ 80.363917][ T5422] btrfs_delayed_update_inode+0x3c/0x1b68 [ 80.364803][ T5422] btrfs_update_inode+0x210/0x3d4 [ 80.365602][ T5422] btrfs_create+0x364/0x514 [ 80.366375][ T5422] path_openat+0xe18/0x2718 [ 80.367079][ T5422] do_filp_open+0x184/0x368 [ 80.367768][ T5422] do_sys_openat2+0x134/0x3f4 [ 80.368491][ T5422] __arm64_sys_openat+0x118/0x14c [ 80.369289][ T5422] invoke_syscall+0x98/0x2b0 [ 80.370034][ T5422] el0_svc_common+0x138/0x258 [ 80.370802][ T5422] do_el0_svc+0x58/0x13c [ 80.371536][ T5422] el0_svc+0x78/0x1d0 [ 80.372189][ T5422] el0t_64_sync_handler+0xcc/0xe4 [ 80.372952][ T5422] el0t_64_sync+0x1a0/0x1a4 [ 80.520164][ T5444] loop0: detected capacity change from 0 to 32768 [ 80.566440][ T5444] BTRFS: device fsid ed167579-eb65-4e76-9a50-61ac97e9b59d devid 1 transid 8 /dev/loop0 scanned by syz.0.40 (5444) [ 80.582315][ T5444] FAULT_INJECTION: forcing a failure. [ 80.582315][ T5444] name failslab, interval 1, probability 0, space 0, times 0 [ 80.585293][ T5444] CPU: 1 PID: 5444 Comm: syz.0.40 Tainted: G W syzkaller #0 [ 80.586663][ T5444] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/26/2026 [ 80.588283][ T5444] Call trace: [ 80.588848][ T5444] dump_backtrace+0x0/0x458 [ 80.589584][ T5444] show_stack+0x2c/0x3c [ 80.590257][ T5444] __dump_stack+0x30/0x40 [ 80.590966][ T5444] dump_stack_lvl+0xf4/0x15c [ 80.591636][ T5444] dump_stack+0x1c/0x5c [ 80.592271][ T5444] should_fail+0x3bc/0x514 [ 80.592911][ T5444] __should_failslab+0xbc/0x10c [ 80.593731][ T5444] should_failslab+0x10/0x28 [ 80.594456][ T5444] slab_pre_alloc_hook+0x64/0xe8 [ 80.595243][ T5444] kmem_cache_alloc+0x94/0x3d4 [ 80.595965][ T5444] btrfs_alloc_path+0x5c/0x68 [ 80.596738][ T5444] btrfs_insert_dir_item+0x184/0x3e8 [ 80.597561][ T5444] btrfs_add_link+0x2b0/0xa9c [ 80.598311][ T5444] btrfs_create+0x468/0x514 [ 80.599074][ T5444] path_openat+0xe18/0x2718 [ 80.599803][ T5444] do_filp_open+0x184/0x368 [ 80.600578][ T5444] do_sys_openat2+0x134/0x3f4 [ 80.601340][ T5444] __arm64_sys_openat+0x118/0x14c [ 80.602210][ T5444] invoke_syscall+0x98/0x2b0 [ 80.602919][ T5444] el0_svc_common+0x138/0x258 [ 80.603715][ T5444] do_el0_svc+0x58/0x13c [ 80.604462][ T5444] el0_svc+0x78/0x1d0 [ 80.605898][ T5444] el0t_64_sync_handler+0xcc/0xe4 [ 80.606643][ T5444] el0t_64_sync+0x1a0/0x1a4 [ 80.609831][ T5444] ------------[ cut here ]------------ [ 80.610754][ T5444] WARNING: CPU: 1 PID: 5444 at fs/btrfs/inode.c:6776 btrfs_add_link+0x718/0xa9c [ 80.613700][ T5444] Modules linked in: [ 80.614300][ T5444] CPU: 1 PID: 5444 Comm: syz.0.40 Tainted: G W syzkaller #0 [ 80.616564][ T5444] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/26/2026 [ 80.618134][ T5444] pstate: 62400005 (nZCv daif +PAN -UAO +TCO -DIT -SSBS BTYPE=--) [ 80.619325][ T5444] pc : btrfs_add_link+0x718/0xa9c [ 80.620783][ T5444] lr : btrfs_add_link+0x718/0xa9c [ 80.621590][ T5444] sp : ffff800021e67580 [ 80.622316][ T5444] x29: ffff800021e67680 x28: ffff0000de625160 x27: 0000000000000108 [ 80.623578][ T5444] x26: 00000000fffffff4 x25: 0000000000000000 x24: dfff800000000000 [ 80.624944][ T5444] x23: 0000000000000014 x22: 1fffe0001bcc4a37 x21: ffff7000043cceb8 [ 80.626291][ T5444] x20: 00000000fffffff4 x19: ffff0000de6251b8 x18: 0000000000000001 [ 80.627633][ T5444] x17: 0000000000000000 x16: ffff800011255484 x15: 00000000ffffffff [ 80.628923][ T5444] x14: 0000000000000001 x13: 1fffe000341f49ab x12: 0000000000ff0100 [ 80.630229][ T5444] x11: 0000000000000000 x10: 0000000000000000 x9 : e7cbf56860f36600 [ 80.631611][ T5444] x8 : e7cbf56860f36600 x7 : 0000000000000001 x6 : 0000000000000001 [ 80.633017][ T5444] x5 : ffff800021e66e98 x4 : ffff80001436f3e0 x3 : ffff800008508fa8 [ 80.634406][ T5444] x2 : 0000000000000001 x1 : 0000000100000000 x0 : 0000000000000026 [ 80.635718][ T5444] Call trace: [ 80.636218][ T5444] btrfs_add_link+0x718/0xa9c [ 80.636970][ T5444] btrfs_create+0x468/0x514 [ 80.637690][ T5444] path_openat+0xe18/0x2718 [ 80.638395][ T5444] do_filp_open+0x184/0x368 [ 80.639022][ T5444] do_sys_openat2+0x134/0x3f4 [ 80.639601][ T5444] __arm64_sys_openat+0x118/0x14c [ 80.640269][ T5444] invoke_syscall+0x98/0x2b0 [ 80.641042][ T5444] el0_svc_common+0x138/0x258 [ 80.641807][ T5444] do_el0_svc+0x58/0x13c [ 80.642510][ T5444] el0_svc+0x78/0x1d0 [ 80.643143][ T5444] el0t_64_sync_handler+0xcc/0xe4 [ 80.643935][ T5444] el0t_64_sync+0x1a0/0x1a4 [ 80.644678][ T5444] irq event stamp: 79488 [ 80.645403][ T5444] hardirqs last enabled at (79487): [] __up_console_sem+0xb4/0xfc [ 80.646878][ T5444] hardirqs last disabled at (79488): [] el1_dbg+0x24/0x80 [ 80.648143][ T5444] softirqs last enabled at (79468): [] handle_softirqs+0xa40/0xbe4 [ 80.649772][ T5444] softirqs last disabled at (79393): [] __irq_exit_rcu+0x240/0x43c [ 80.651295][ T5444] ---[ end trace 9d3a0ca7cd6df5ec ]--- [ 80.652858][ T5444] BTRFS: error (device loop0) in btrfs_add_link:6776: errno=-12 Out of memory [ 80.819156][ T5466] loop0: detected capacity change from 0 to 32768 [ 80.866780][ T5466] BTRFS: device fsid ed167579-eb65-4e76-9a50-61ac97e9b59d devid 1 transid 8 /dev/loop0 scanned by syz.0.41 (5466) [ 80.898790][ T5466] FAULT_INJECTION: forcing a failure. [ 80.898790][ T5466] name failslab, interval 1, probability 0, space 0, times 0 [ 80.900724][ T5466] CPU: 0 PID: 5466 Comm: syz.0.41 Tainted: G W syzkaller #0 [ 80.902122][ T5466] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/26/2026 [ 80.903678][ T5466] Call trace: [ 80.904223][ T5466] dump_backtrace+0x0/0x458 [ 80.904982][ T5466] show_stack+0x2c/0x3c [ 80.905667][ T5466] __dump_stack+0x30/0x40 [ 80.906372][ T5466] dump_stack_lvl+0xf4/0x15c [ 80.907083][ T5466] dump_stack+0x1c/0x5c [ 80.907751][ T5466] should_fail+0x3bc/0x514 [ 80.908552][ T5466] __should_failslab+0xbc/0x10c [ 80.909307][ T5466] should_failslab+0x10/0x28 [ 80.910117][ T5466] slab_pre_alloc_hook+0x64/0xe8 [ 80.910893][ T5466] kmem_cache_alloc+0x94/0x3d4 [ 80.911670][ T5466] btrfs_get_or_create_delayed_node+0x114/0x4a8 [ 80.912613][ T5466] btrfs_delayed_update_inode+0x3c/0x1b68 [ 80.913511][ T5466] btrfs_update_inode+0x210/0x3d4 [ 80.914317][ T5466] btrfs_create+0x364/0x514 [ 80.915004][ T5466] path_openat+0xe18/0x2718 [ 80.915644][ T5466] do_filp_open+0x184/0x368 [ 80.916365][ T5466] do_sys_openat2+0x134/0x3f4 [ 80.917107][ T5466] __arm64_sys_openat+0x118/0x14c [ 80.917936][ T5466] invoke_syscall+0x98/0x2b0 [ 80.918660][ T5466] el0_svc_common+0x138/0x258 [ 80.919496][ T5466] do_el0_svc+0x58/0x13c [ 80.920250][ T5466] el0_svc+0x78/0x1d0 [ 80.920897][ T5466] el0t_64_sync_handler+0xcc/0xe4 [ 80.921742][ T5466] el0t_64_sync+0x1a0/0x1a4 [ 81.071649][ T5488] BTRFS: device fsid ed167579-eb65-4e76-9a50-61ac97e9b59d devid 1 transid 8 /dev/loop0 scanned by syz.0.42 (5488) [ 81.097750][ T5488] FAULT_INJECTION: forcing a failure. [ 81.097750][ T5488] name failslab, interval 1, probability 0, space 0, times 0 [ 81.100046][ T5488] CPU: 1 PID: 5488 Comm: syz.0.42 Tainted: G W syzkaller #0 [ 81.101519][ T5488] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/26/2026 [ 81.103098][ T5488] Call trace: [ 81.103606][ T5488] dump_backtrace+0x0/0x458 [ 81.104278][ T5488] show_stack+0x2c/0x3c [ 81.104887][ T5488] __dump_stack+0x30/0x40 [ 81.105547][ T5488] dump_stack_lvl+0xf4/0x15c [ 81.106222][ T5488] dump_stack+0x1c/0x5c [ 81.106847][ T5488] should_fail+0x3bc/0x514 [ 81.107634][ T5488] __should_failslab+0xbc/0x10c [ 81.108436][ T5488] should_failslab+0x10/0x28 [ 81.109055][ T5488] slab_pre_alloc_hook+0x64/0xe8 [ 81.109954][ T5488] kmem_cache_alloc+0x94/0x3d4 [ 81.110736][ T5488] btrfs_alloc_path+0x5c/0x68 [ 81.111481][ T5488] btrfs_insert_dir_item+0x184/0x3e8 [ 81.112484][ T5488] btrfs_add_link+0x2b0/0xa9c [ 81.113196][ T5488] btrfs_create+0x468/0x514 [ 81.113987][ T5488] path_openat+0xe18/0x2718 [ 81.114713][ T5488] do_filp_open+0x184/0x368 [ 81.115449][ T5488] do_sys_openat2+0x134/0x3f4 [ 81.116366][ T5488] __arm64_sys_openat+0x118/0x14c [ 81.117195][ T5488] invoke_syscall+0x98/0x2b0 [ 81.118005][ T5488] el0_svc_common+0x138/0x258 [ 81.118777][ T5488] do_el0_svc+0x58/0x13c [ 81.119498][ T5488] el0_svc+0x78/0x1d0 [ 81.120228][ T5488] el0t_64_sync_handler+0xcc/0xe4 [ 81.121038][ T5488] el0t_64_sync+0x1a0/0x1a4 [ 81.122716][ T5488] ------------[ cut here ]------------ [ 81.123689][ T5488] WARNING: CPU: 1 PID: 5488 at fs/btrfs/inode.c:6776 btrfs_add_link+0x718/0xa9c [ 81.125149][ T5488] Modules linked in: [ 81.125814][ T5488] CPU: 1 PID: 5488 Comm: syz.0.42 Tainted: G W syzkaller #0 [ 81.127234][ T5488] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/26/2026 [ 81.128952][ T5488] pstate: 62400005 (nZCv daif +PAN -UAO +TCO -DIT -SSBS BTYPE=--) [ 81.130247][ T5488] pc : btrfs_add_link+0x718/0xa9c [ 81.131124][ T5488] lr : btrfs_add_link+0x718/0xa9c [ 81.131934][ T5488] sp : ffff800021f77580 [ 81.132586][ T5488] x29: ffff800021f77680 x28: ffff0000de625790 x27: 0000000000000108 [ 81.133921][ T5488] x26: 00000000fffffff4 x25: 0000000000000000 x24: dfff800000000000 [ 81.135189][ T5488] x23: 0000000000000014 x22: 1fffe0001bcc4afd x21: ffff7000043eeeb8 [ 81.136393][ T5488] x20: 00000000fffffff4 x19: ffff0000de6257e8 x18: 0000000000000001 [ 81.137534][ T5488] x17: 0000000000000000 x16: ffff800011255484 x15: 00000000ffffffff [ 81.138807][ T5488] x14: 0000000000000001 x13: 1fffe000341f49ab x12: 0000000000ff0100 [ 81.140050][ T5488] x11: 0000000000000000 x10: 0000000000000000 x9 : c2ef4a2d4062ef00 [ 81.141165][ T5488] x8 : c2ef4a2d4062ef00 x7 : 0000000000000001 x6 : 0000000000000001 [ 81.142604][ T5488] x5 : ffff800021f76e98 x4 : ffff80001436f3e0 x3 : ffff800008508fa8 [ 81.143912][ T5488] x2 : 0000000000000001 x1 : 0000000100000000 x0 : 0000000000000026 [ 81.145359][ T5488] Call trace: [ 81.145945][ T5488] btrfs_add_link+0x718/0xa9c [ 81.146647][ T5488] btrfs_create+0x468/0x514 [ 81.147379][ T5488] path_openat+0xe18/0x2718 [ 81.148120][ T5488] do_filp_open+0x184/0x368 [ 81.148914][ T5488] do_sys_openat2+0x134/0x3f4 [ 81.149692][ T5488] __arm64_sys_openat+0x118/0x14c [ 81.150491][ T5488] invoke_syscall+0x98/0x2b0 [ 81.151264][ T5488] el0_svc_common+0x138/0x258 [ 81.152014][ T5488] do_el0_svc+0x58/0x13c [ 81.152695][ T5488] el0_svc+0x78/0x1d0 [ 81.153370][ T5488] el0t_64_sync_handler+0xcc/0xe4 [ 81.154242][ T5488] el0t_64_sync+0x1a0/0x1a4 [ 81.154995][ T5488] irq event stamp: 80142 [ 81.155645][ T5488] hardirqs last enabled at (80141): [] __up_console_sem+0xb4/0xfc [ 81.157181][ T5488] hardirqs last disabled at (80142): [] el1_dbg+0x24/0x80 [ 81.158560][ T5488] softirqs last enabled at (80122): [] handle_softirqs+0xa40/0xbe4 [ 81.160074][ T5488] softirqs last disabled at (80047): [] __irq_exit_rcu+0x240/0x43c [ 81.161619][ T5488] ---[ end trace 9d3a0ca7cd6df5ed ]--- [ 81.162963][ T5488] BTRFS: error (device loop0) in btrfs_add_link:6776: errno=-12 Out of memory [ 81.356012][ T5510] BTRFS: device fsid ed167579-eb65-4e76-9a50-61ac97e9b59d devid 1 transid 8 /dev/loop0 scanned by syz.0.43 (5510) [ 81.377179][ T5510] FAULT_INJECTION: forcing a failure. [ 81.377179][ T5510] name failslab, interval 1, probability 0, space 0, times 0 [ 81.379367][ T5510] CPU: 0 PID: 5510 Comm: syz.0.43 Tainted: G W syzkaller #0 [ 81.380771][ T5510] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/26/2026 [ 81.382316][ T5510] Call trace: [ 81.382811][ T5510] dump_backtrace+0x0/0x458 [ 81.383616][ T5510] show_stack+0x2c/0x3c [ 81.384414][ T5510] __dump_stack+0x30/0x40 [ 81.385108][ T5510] dump_stack_lvl+0xf4/0x15c [ 81.385832][ T5510] dump_stack+0x1c/0x5c [ 81.386479][ T5510] should_fail+0x3bc/0x514 [ 81.387219][ T5510] __should_failslab+0xbc/0x10c [ 81.388074][ T5510] should_failslab+0x10/0x28 [ 81.388838][ T5510] slab_pre_alloc_hook+0x64/0xe8 [ 81.389679][ T5510] kmem_cache_alloc+0x94/0x3d4 [ 81.390488][ T5510] btrfs_get_or_create_delayed_node+0x114/0x4a8 [ 81.391545][ T5510] btrfs_delayed_update_inode+0x3c/0x1b68 [ 81.392497][ T5510] btrfs_update_inode+0x210/0x3d4 [ 81.393361][ T5510] btrfs_create+0x364/0x514 [ 81.394048][ T5510] path_openat+0xe18/0x2718 [ 81.394714][ T5510] do_filp_open+0x184/0x368 [ 81.395363][ T5510] do_sys_openat2+0x134/0x3f4 [ 81.396031][ T5510] __arm64_sys_openat+0x118/0x14c [ 81.396793][ T5510] invoke_syscall+0x98/0x2b0 [ 81.397552][ T5510] el0_svc_common+0x138/0x258 [ 81.398365][ T5510] do_el0_svc+0x58/0x13c [ 81.399084][ T5510] el0_svc+0x78/0x1d0 [ 81.399720][ T5510] el0t_64_sync_handler+0xcc/0xe4 [ 81.400509][ T5510] el0t_64_sync+0x1a0/0x1a4 [ 81.447626][ T4881] BTRFS: device fsid ed167579-eb65-4e76-9a50-61ac97e9b59d devid 1 transid 12 /dev/loop0 scanned by udevd (4881) [ 81.610857][ T5531] FAULT_INJECTION: forcing a failure. [ 81.610857][ T5531] name failslab, interval 1, probability 0, space 0, times 0 [ 81.612946][ T5531] CPU: 1 PID: 5531 Comm: syz.0.44 Tainted: G W syzkaller #0 [ 81.614260][ T5531] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/26/2026 [ 81.615930][ T5531] Call trace: [ 81.616498][ T5531] dump_backtrace+0x0/0x458 [ 81.617191][ T5531] show_stack+0x2c/0x3c [ 81.617878][ T5531] __dump_stack+0x30/0x40 [ 81.618517][ T5531] dump_stack_lvl+0xf4/0x15c [ 81.619273][ T5531] dump_stack+0x1c/0x5c [ 81.619944][ T5531] should_fail+0x3bc/0x514 [ 81.620572][ T5531] __should_failslab+0xbc/0x10c [ 81.621292][ T5531] should_failslab+0x10/0x28 [ 81.621990][ T5531] slab_pre_alloc_hook+0x64/0xe8 [ 81.622691][ T5531] kmem_cache_alloc+0x94/0x3d4 [ 81.623371][ T5531] btrfs_alloc_path+0x5c/0x68 [ 81.624106][ T5531] btrfs_insert_dir_item+0x184/0x3e8 [ 81.624866][ T5531] btrfs_add_link+0x2b0/0xa9c [ 81.625610][ T5531] btrfs_create+0x468/0x514 [ 81.626390][ T5531] path_openat+0xe18/0x2718 [ 81.627067][ T5531] do_filp_open+0x184/0x368 [ 81.627694][ T5531] do_sys_openat2+0x134/0x3f4 [ 81.628500][ T5531] __arm64_sys_openat+0x118/0x14c [ 81.629361][ T5531] invoke_syscall+0x98/0x2b0 [ 81.630094][ T5531] el0_svc_common+0x138/0x258 [ 81.630847][ T5531] do_el0_svc+0x58/0x13c [ 81.631524][ T5531] el0_svc+0x78/0x1d0 [ 81.632182][ T5531] el0t_64_sync_handler+0xcc/0xe4 [ 81.633032][ T5531] el0t_64_sync+0x1a0/0x1a4 [ 81.634324][ T5531] ------------[ cut here ]------------ [ 81.635440][ T5531] WARNING: CPU: 1 PID: 5531 at fs/btrfs/inode.c:6776 btrfs_add_link+0x718/0xa9c [ 81.636740][ T5531] Modules linked in: [ 81.637363][ T5531] CPU: 1 PID: 5531 Comm: syz.0.44 Tainted: G W syzkaller #0 [ 81.638780][ T5531] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/26/2026 [ 81.640242][ T5531] pstate: 62400005 (nZCv daif +PAN -UAO +TCO -DIT -SSBS BTYPE=--) [ 81.641543][ T5531] pc : btrfs_add_link+0x718/0xa9c [ 81.642401][ T5531] lr : btrfs_add_link+0x718/0xa9c [ 81.643240][ T5531] sp : ffff800021f77580 [ 81.643840][ T5531] x29: ffff800021f77680 x28: ffff0000de53e210 x27: 0000000000000108 [ 81.645191][ T5531] x26: 00000000fffffff4 x25: 0000000000000000 x24: dfff800000000000 [ 81.646427][ T5531] x23: 0000000000000014 x22: 1fffe0001bca7c4d x21: ffff7000043eeeb8 [ 81.647795][ T5531] x20: 00000000fffffff4 x19: ffff0000de53e268 x18: 0000000000000001 [ 81.649085][ T5531] x17: 0000000000000000 x16: ffff800008304ad4 x15: 00000000ffffffff [ 81.650390][ T5531] x14: 0000000000000001 x13: 1ffff000043eedd0 x12: 0000000000ff0100 [ 81.651652][ T5531] x11: 0000000000000000 x10: 0000000000000000 x9 : 1295f6aea32ef100 [ 81.653000][ T5531] x8 : 1295f6aea32ef100 x7 : 0000000000000001 x6 : 0000000000000001 [ 81.654388][ T5531] x5 : ffff800021f76e98 x4 : ffff80001436f3e0 x3 : ffff800008304be4 [ 81.655743][ T5531] x2 : 0000000000000001 x1 : 0000000100000000 x0 : 0000000000000026 [ 81.657048][ T5531] Call trace: [ 81.657538][ T5531] btrfs_add_link+0x718/0xa9c [ 81.658322][ T5531] btrfs_create+0x468/0x514 [ 81.659163][ T5531] path_openat+0xe18/0x2718 [ 81.659937][ T5531] do_filp_open+0x184/0x368 [ 81.660635][ T5531] do_sys_openat2+0x134/0x3f4 [ 81.661500][ T5531] __arm64_sys_openat+0x118/0x14c [ 81.662314][ T5531] invoke_syscall+0x98/0x2b0 [ 81.663029][ T5531] el0_svc_common+0x138/0x258 [ 81.663863][ T5531] do_el0_svc+0x58/0x13c [ 81.664580][ T5531] el0_svc+0x78/0x1d0 [ 81.665212][ T5531] el0t_64_sync_handler+0xcc/0xe4 [ 81.666017][ T5531] el0t_64_sync+0x1a0/0x1a4 [ 81.666759][ T5531] irq event stamp: 79484 [ 81.667490][ T5531] hardirqs last enabled at (79483): [] __up_console_sem+0xb4/0xfc [ 81.669100][ T5531] hardirqs last disabled at (79484): [] el1_dbg+0x24/0x80 [ 81.670670][ T5531] softirqs last enabled at (79472): [] handle_softirqs+0xa40/0xbe4 [ 81.672228][ T5531] softirqs last disabled at (79451): [] __irq_exit_rcu+0x240/0x43c [ 81.673857][ T5531] ---[ end trace 9d3a0ca7cd6df5ee ]--- [ 81.675167][ T5531] BTRFS: error (device loop0) in btrfs_add_link:6776: errno=-12 Out of memory [ 81.867473][ T5554] BTRFS: device fsid ed167579-eb65-4e76-9a50-61ac97e9b59d devid 1 transid 8 /dev/loop0 scanned by syz.0.45 (5554) [ 81.895288][ T5554] FAULT_INJECTION: forcing a failure. [ 81.895288][ T5554] name failslab, interval 1, probability 0, space 0, times 0 [ 81.897012][ T5554] CPU: 0 PID: 5554 Comm: syz.0.45 Tainted: G W syzkaller #0 [ 81.898340][ T5554] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/26/2026 [ 81.899916][ T5554] Call trace: [ 81.900372][ T5554] dump_backtrace+0x0/0x458 [ 81.901049][ T5554] show_stack+0x2c/0x3c [ 81.901756][ T5554] __dump_stack+0x30/0x40 [ 81.902433][ T5554] dump_stack_lvl+0xf4/0x15c [ 81.903124][ T5554] dump_stack+0x1c/0x5c [ 81.903775][ T5554] should_fail+0x3bc/0x514 [ 81.904446][ T5554] __should_failslab+0xbc/0x10c [ 81.905214][ T5554] should_failslab+0x10/0x28 [ 81.905927][ T5554] slab_pre_alloc_hook+0x64/0xe8 [ 81.906650][ T5554] kmem_cache_alloc+0x94/0x3d4 [ 81.907396][ T5554] btrfs_alloc_path+0x5c/0x68 [ 81.908114][ T5554] btrfs_insert_dir_item+0x184/0x3e8 [ 81.908967][ T5554] btrfs_add_link+0x2b0/0xa9c [ 81.909728][ T5554] btrfs_create+0x468/0x514 [ 81.910539][ T5554] path_openat+0xe18/0x2718 [ 81.911273][ T5554] do_filp_open+0x184/0x368 [ 81.911988][ T5554] do_sys_openat2+0x134/0x3f4 [ 81.912762][ T5554] __arm64_sys_openat+0x118/0x14c [ 81.913612][ T5554] invoke_syscall+0x98/0x2b0 [ 81.914338][ T5554] el0_svc_common+0x138/0x258 [ 81.915078][ T5554] do_el0_svc+0x58/0x13c [ 81.915736][ T5554] el0_svc+0x78/0x1d0 [ 81.916340][ T5554] el0t_64_sync_handler+0xcc/0xe4 [ 81.917089][ T5554] el0t_64_sync+0x1a0/0x1a4 [ 81.917946][ T5554] ------------[ cut here ]------------ [ 81.919274][ T5554] WARNING: CPU: 0 PID: 5554 at fs/btrfs/inode.c:6776 btrfs_add_link+0x718/0xa9c [ 81.920636][ T5554] Modules linked in: [ 81.921129][ T5554] CPU: 0 PID: 5554 Comm: syz.0.45 Tainted: G W syzkaller #0 [ 81.922382][ T5554] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/26/2026 [ 81.924046][ T5554] pstate: 62400005 (nZCv daif +PAN -UAO +TCO -DIT -SSBS BTYPE=--) [ 81.925325][ T5554] pc : btrfs_add_link+0x718/0xa9c [ 81.926089][ T5554] lr : btrfs_add_link+0x718/0xa9c [ 81.926896][ T5554] sp : ffff800021f77580 [ 81.927527][ T5554] x29: ffff800021f77680 x28: ffff0000de649630 x27: 0000000000000108 [ 81.928785][ T5554] x26: 00000000fffffff4 x25: 0000000000000000 x24: dfff800000000000 [ 81.930044][ T5554] x23: 0000000000000014 x22: 1fffe0001bcc92d1 x21: ffff7000043eeeb8 [ 81.931186][ T5554] x20: 00000000fffffff4 x19: ffff0000de649688 x18: 0000000000000001 [ 81.932437][ T5554] x17: 0000000000000000 x16: ffff800011255484 x15: 00000000ffffffff [ 81.933530][ T5554] x14: 0000000000000001 x13: 1fffe000341f07ab x12: 0000000000ff0100 [ 81.934621][ T5554] x11: 0000000000000000 x10: 0000000000000000 x9 : a1905f4592910900 [ 81.935835][ T5554] x8 : a1905f4592910900 x7 : 0000000000000001 x6 : 0000000000000001 [ 81.937151][ T5554] x5 : ffff800021f76e98 x4 : ffff80001436f3e0 x3 : ffff800008508fa8 [ 81.938381][ T5554] x2 : 0000000000000001 x1 : 0000000100000000 x0 : 0000000000000026 [ 81.939644][ T5554] Call trace: [ 81.940209][ T5554] btrfs_add_link+0x718/0xa9c [ 81.940904][ T5554] btrfs_create+0x468/0x514 [ 81.941661][ T5554] path_openat+0xe18/0x2718 [ 81.942379][ T5554] do_filp_open+0x184/0x368 [ 81.943037][ T5554] do_sys_openat2+0x134/0x3f4 [ 81.943773][ T5554] __arm64_sys_openat+0x118/0x14c [ 81.944543][ T5554] invoke_syscall+0x98/0x2b0 [ 81.945245][ T5554] el0_svc_common+0x138/0x258 [ 81.946052][ T5554] do_el0_svc+0x58/0x13c [ 81.946718][ T5554] el0_svc+0x78/0x1d0 [ 81.947326][ T5554] el0t_64_sync_handler+0xcc/0xe4 [ 81.948121][ T5554] el0t_64_sync+0x1a0/0x1a4 [ 81.948861][ T5554] irq event stamp: 79722 [ 81.949470][ T5554] hardirqs last enabled at (79721): [] __up_console_sem+0xb4/0xfc [ 81.950884][ T5554] hardirqs last disabled at (79722): [] el1_dbg+0x24/0x80 [ 81.952121][ T5554] softirqs last enabled at (79698): [] handle_softirqs+0xa40/0xbe4 [ 81.953507][ T5554] softirqs last disabled at (79687): [] __irq_exit_rcu+0x240/0x43c [ 81.954820][ T5554] ---[ end trace 9d3a0ca7cd6df5ef ]--- [ 81.957279][ T5554] BTRFS: error (device loop0) in btrfs_add_link:6776: errno=-12 Out of memory [ 82.130315][ T5576] BTRFS: device fsid ed167579-eb65-4e76-9a50-61ac97e9b59d devid 1 transid 8 /dev/loop0 scanned by syz.0.46 (5576) [ 82.149533][ T5576] FAULT_INJECTION: forcing a failure. [ 82.149533][ T5576] name failslab, interval 1, probability 0, space 0, times 0 [ 82.151707][ T5576] CPU: 1 PID: 5576 Comm: syz.0.46 Tainted: G W syzkaller #0 [ 82.153078][ T5576] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/26/2026 [ 82.154647][ T5576] Call trace: [ 82.155200][ T5576] dump_backtrace+0x0/0x458 [ 82.156006][ T5576] show_stack+0x2c/0x3c [ 82.156691][ T5576] __dump_stack+0x30/0x40 [ 82.157493][ T5576] dump_stack_lvl+0xf4/0x15c [ 82.158245][ T5576] dump_stack+0x1c/0x5c [ 82.159001][ T5576] should_fail+0x3bc/0x514 [ 82.159676][ T5576] __should_failslab+0xbc/0x10c [ 82.160543][ T5576] should_failslab+0x10/0x28 [ 82.161178][ T5576] slab_pre_alloc_hook+0x64/0xe8 [ 82.161887][ T5576] kmem_cache_alloc+0x94/0x3d4 [ 82.162598][ T5576] btrfs_get_or_create_delayed_node+0x114/0x4a8 [ 82.163492][ T5576] btrfs_delayed_update_inode+0x3c/0x1b68 [ 82.164569][ T5576] btrfs_update_inode+0x210/0x3d4 [ 82.165395][ T5576] btrfs_create+0x364/0x514 [ 82.166083][ T5576] path_openat+0xe18/0x2718 [ 82.166753][ T5576] do_filp_open+0x184/0x368 [ 82.167422][ T5576] do_sys_openat2+0x134/0x3f4 [ 82.168247][ T5576] __arm64_sys_openat+0x118/0x14c [ 82.169064][ T5576] invoke_syscall+0x98/0x2b0 [ 82.169835][ T5576] el0_svc_common+0x138/0x258 [ 82.170655][ T5576] do_el0_svc+0x58/0x13c [ 82.171340][ T5576] el0_svc+0x78/0x1d0 [ 82.171932][ T5576] el0t_64_sync_handler+0xcc/0xe4 [ 82.172672][ T5576] el0t_64_sync+0x1a0/0x1a4 [ 82.366816][ T5598] BTRFS: device fsid ed167579-eb65-4e76-9a50-61ac97e9b59d devid 1 transid 8 /dev/loop0 scanned by syz.0.47 (5598) [ 82.390872][ T5598] FAULT_INJECTION: forcing a failure. [ 82.390872][ T5598] name failslab, interval 1, probability 0, space 0, times 0 [ 82.392967][ T5598] CPU: 0 PID: 5598 Comm: syz.0.47 Tainted: G W syzkaller #0 [ 82.394394][ T5598] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/26/2026 [ 82.395953][ T5598] Call trace: [ 82.396458][ T5598] dump_backtrace+0x0/0x458 [ 82.397243][ T5598] show_stack+0x2c/0x3c [ 82.398007][ T5598] __dump_stack+0x30/0x40 [ 82.398718][ T5598] dump_stack_lvl+0xf4/0x15c [ 82.399466][ T5598] dump_stack+0x1c/0x5c [ 82.400150][ T5598] should_fail+0x3bc/0x514 [ 82.400921][ T5598] __should_failslab+0xbc/0x10c [ 82.401860][ T5598] should_failslab+0x10/0x28 [ 82.402488][ T5598] slab_pre_alloc_hook+0x64/0xe8 [ 82.403263][ T5598] kmem_cache_alloc+0x94/0x3d4 [ 82.403987][ T5598] security_inode_alloc+0x38/0x11c [ 82.404774][ T5598] inode_init_always+0x670/0xa84 [ 82.405543][ T5598] new_inode_pseudo+0x7c/0x1fc [ 82.406292][ T5598] new_inode+0x38/0x174 [ 82.406936][ T5598] btrfs_new_inode+0x158/0x1564 [ 82.407607][ T5598] btrfs_create+0x24c/0x514 [ 82.408277][ T5598] path_openat+0xe18/0x2718 [ 82.408963][ T5598] do_filp_open+0x184/0x368 [ 82.409725][ T5598] do_sys_openat2+0x134/0x3f4 [ 82.410424][ T5598] __arm64_sys_openat+0x118/0x14c [ 82.411082][ T5598] invoke_syscall+0x98/0x2b0 [ 82.411645][ T5598] el0_svc_common+0x138/0x258 [ 82.412236][ T5598] do_el0_svc+0x58/0x13c [ 82.412766][ T5598] el0_svc+0x78/0x1d0 [ 82.413269][ T5598] el0t_64_sync_handler+0xcc/0xe4 [ 82.413897][ T5598] el0t_64_sync+0x1a0/0x1a4 [ 82.569419][ T5620] BTRFS: device fsid ed167579-eb65-4e76-9a50-61ac97e9b59d devid 1 transid 8 /dev/loop0 scanned by syz.0.48 (5620) [ 82.590259][ T5620] FAULT_INJECTION: forcing a failure. [ 82.590259][ T5620] name failslab, interval 1, probability 0, space 0, times 0 [ 82.592266][ T5620] CPU: 1 PID: 5620 Comm: syz.0.48 Tainted: G W syzkaller #0 [ 82.593579][ T5620] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/26/2026 [ 82.595082][ T5620] Call trace: [ 82.595568][ T5620] dump_backtrace+0x0/0x458 [ 82.596275][ T5620] show_stack+0x2c/0x3c [ 82.596916][ T5620] __dump_stack+0x30/0x40 [ 82.597622][ T5620] dump_stack_lvl+0xf4/0x15c [ 82.598378][ T5620] dump_stack+0x1c/0x5c [ 82.599029][ T5620] should_fail+0x3bc/0x514 [ 82.599722][ T5620] __should_failslab+0xbc/0x10c [ 82.600572][ T5620] should_failslab+0x10/0x28 [ 82.601354][ T5620] slab_pre_alloc_hook+0x64/0xe8 [ 82.602201][ T5620] kmem_cache_alloc+0x94/0x3d4 [ 82.603059][ T5620] btrfs_alloc_path+0x5c/0x68 [ 82.603834][ T5620] btrfs_insert_dir_item+0x184/0x3e8 [ 82.604738][ T5620] btrfs_add_link+0x2b0/0xa9c [ 82.605532][ T5620] btrfs_create+0x468/0x514 [ 82.606286][ T5620] path_openat+0xe18/0x2718 [ 82.606964][ T5620] do_filp_open+0x184/0x368 [ 82.607737][ T5620] do_sys_openat2+0x134/0x3f4 [ 82.608485][ T5620] __arm64_sys_openat+0x118/0x14c [ 82.609244][ T5620] invoke_syscall+0x98/0x2b0 [ 82.609971][ T5620] el0_svc_common+0x138/0x258 [ 82.610806][ T5620] do_el0_svc+0x58/0x13c [ 82.611511][ T5620] el0_svc+0x78/0x1d0 [ 82.612144][ T5620] el0t_64_sync_handler+0xcc/0xe4 [ 82.612921][ T5620] el0t_64_sync+0x1a0/0x1a4 [ 82.615348][ T5620] ------------[ cut here ]------------ [ 82.616390][ T5620] WARNING: CPU: 0 PID: 5620 at fs/btrfs/inode.c:6776 btrfs_add_link+0x718/0xa9c [ 82.617755][ T5620] Modules linked in: [ 82.618441][ T5620] CPU: 0 PID: 5620 Comm: syz.0.48 Tainted: G W syzkaller #0 [ 82.619839][ T5620] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/26/2026 [ 82.621408][ T5620] pstate: 62400005 (nZCv daif +PAN -UAO +TCO -DIT -SSBS BTYPE=--) [ 82.622540][ T5620] pc : btrfs_add_link+0x718/0xa9c [ 82.623285][ T5620] lr : btrfs_add_link+0x718/0xa9c [ 82.624121][ T5620] sp : ffff800022827580 [ 82.624837][ T5620] x29: ffff800022827680 x28: ffff0000de7ffe70 x27: 0000000000000108 [ 82.626103][ T5620] x26: 00000000fffffff4 x25: 0000000000000000 x24: dfff800000000000 [ 82.627382][ T5620] x23: 0000000000000014 x22: 1fffe0001bcfffd9 x21: ffff700004504eb8 [ 82.628681][ T5620] x20: 00000000fffffff4 x19: ffff0000de7ffec8 x18: 0000000000000001 [ 82.629931][ T5620] x17: 0000000000000000 x16: ffff800011255484 x15: 00000000ffffffff [ 82.631097][ T5620] x14: 0000000000000001 x13: 1fffe000341f07ab x12: 0000000000ff0100 [ 82.632325][ T5620] x11: 0000000000000000 x10: 0000000000000000 x9 : e744c5b214753a00 [ 82.633554][ T5620] x8 : e744c5b214753a00 x7 : 0000000000000001 x6 : 0000000000000001 [ 82.634901][ T5620] x5 : ffff800022826e98 x4 : ffff80001436f3e0 x3 : ffff800008508fa8 [ 82.636169][ T5620] x2 : 0000000000000001 x1 : 0000000100000000 x0 : 0000000000000026 [ 82.637383][ T5620] Call trace: [ 82.637900][ T5620] btrfs_add_link+0x718/0xa9c [ 82.638609][ T5620] btrfs_create+0x468/0x514 [ 82.639282][ T5620] path_openat+0xe18/0x2718 [ 82.640023][ T5620] do_filp_open+0x184/0x368 [ 82.640872][ T5620] do_sys_openat2+0x134/0x3f4 [ 82.641667][ T5620] __arm64_sys_openat+0x118/0x14c [ 82.642461][ T5620] invoke_syscall+0x98/0x2b0 [ 82.643269][ T5620] el0_svc_common+0x138/0x258 [ 82.644037][ T5620] do_el0_svc+0x58/0x13c [ 82.644735][ T5620] el0_svc+0x78/0x1d0 [ 82.645316][ T5620] el0t_64_sync_handler+0xcc/0xe4 [ 82.646165][ T5620] el0t_64_sync+0x1a0/0x1a4 [ 82.646852][ T5620] irq event stamp: 80556 [ 82.647518][ T5620] hardirqs last enabled at (80555): [] __up_console_sem+0xb4/0xfc [ 82.649077][ T5620] hardirqs last disabled at (80556): [] el1_dbg+0x24/0x80 [ 82.650531][ T5620] softirqs last enabled at (80536): [] handle_softirqs+0xa40/0xbe4 [ 82.652074][ T5620] softirqs last disabled at (80519): [] __irq_exit_rcu+0x240/0x43c [ 82.653482][ T5620] ---[ end trace 9d3a0ca7cd6df5f0 ]--- [ 82.656683][ T5620] BTRFS: error (device loop0) in btrfs_add_link:6776: errno=-12 Out of memory [ 82.809758][ T5642] BTRFS: device fsid ed167579-eb65-4e76-9a50-61ac97e9b59d devid 1 transid 8 /dev/loop0 scanned by syz.0.49 (5642) [ 82.825729][ T5642] FAULT_INJECTION: forcing a failure. [ 82.825729][ T5642] name failslab, interval 1, probability 0, space 0, times 0 [ 82.827744][ T5642] CPU: 0 PID: 5642 Comm: syz.0.49 Tainted: G W syzkaller #0 [ 82.829259][ T5642] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/26/2026 [ 82.830784][ T5642] Call trace: [ 82.831282][ T5642] dump_backtrace+0x0/0x458 [ 82.832069][ T5642] show_stack+0x2c/0x3c [ 82.832685][ T5642] __dump_stack+0x30/0x40 [ 82.833375][ T5642] dump_stack_lvl+0xf4/0x15c [ 82.834152][ T5642] dump_stack+0x1c/0x5c [ 82.834815][ T5642] should_fail+0x3bc/0x514 [ 82.835510][ T5642] __should_failslab+0xbc/0x10c [ 82.836337][ T5642] should_failslab+0x10/0x28 [ 82.837103][ T5642] slab_pre_alloc_hook+0x64/0xe8 [ 82.837859][ T5642] kmem_cache_alloc+0x94/0x3d4 [ 82.838712][ T5642] btrfs_get_or_create_delayed_node+0x114/0x4a8 [ 82.839707][ T5642] btrfs_delayed_update_inode+0x3c/0x1b68 [ 82.840687][ T5642] btrfs_update_inode+0x210/0x3d4 [ 82.841618][ T5642] btrfs_create+0x364/0x514 [ 82.842409][ T5642] path_openat+0xe18/0x2718 [ 82.843180][ T5642] do_filp_open+0x184/0x368 [ 82.843877][ T5642] do_sys_openat2+0x134/0x3f4 [ 82.844653][ T5642] __arm64_sys_openat+0x118/0x14c [ 82.845461][ T5642] invoke_syscall+0x98/0x2b0 [ 82.846155][ T5642] el0_svc_common+0x138/0x258 [ 82.846893][ T5642] do_el0_svc+0x58/0x13c [ 82.847521][ T5642] el0_svc+0x78/0x1d0 [ 82.848183][ T5642] el0t_64_sync_handler+0xcc/0xe4 [ 82.848982][ T5642] el0t_64_sync+0x1a0/0x1a4