Warning: Permanently added '10.128.10.5' (ED25519) to the list of known hosts. 1970/01/01 00:01:05 ignoring optional flag "type"="gce" 1970/01/01 00:01:05 parsed 1 programs [ 66.783547][ T4375] Adding 124996k swap on ./swap-file. Priority:0 extents:1 across:124996k SSFS [ 69.633846][ T2436] cfg80211: failed to load regulatory.db [ 69.635482][ T2062] ieee802154 phy0 wpan0: encryption failed: -22 [ 69.636517][ T2062] ieee802154 phy1 wpan1: encryption failed: -22 [ 70.350063][ T148] wlan0: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 70.351358][ T148] wlan0: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 70.356273][ T148] IPv6: ADDRCONF(NETDEV_CHANGE): wlan0: link becomes ready [ 70.361564][ T148] wlan1: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 70.363049][ T148] wlan1: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 70.364376][ T148] IPv6: ADDRCONF(NETDEV_CHANGE): wlan1: link becomes ready [ 70.823641][ T4536] chnl_net:caif_netlink_parms(): no params data found [ 70.840811][ T4536] bridge0: port 1(bridge_slave_0) entered blocking state [ 70.842180][ T4536] bridge0: port 1(bridge_slave_0) entered disabled state [ 70.843807][ T4536] device bridge_slave_0 entered promiscuous mode [ 70.845816][ T4536] bridge0: port 2(bridge_slave_1) entered blocking state [ 70.846886][ T4536] bridge0: port 2(bridge_slave_1) entered disabled state [ 70.848386][ T4536] device bridge_slave_1 entered promiscuous mode [ 70.856459][ T4536] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 70.859166][ T4536] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 70.867940][ T4536] team0: Port device team_slave_0 added [ 70.869850][ T4536] team0: Port device team_slave_1 added [ 70.876484][ T4536] batman_adv: batadv0: Adding interface: batadv_slave_0 [ 70.877679][ T4536] 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. [ 70.882427][ T4536] batman_adv: batadv0: Not using interface batadv_slave_0 (retrying later): interface not active [ 70.884883][ T4536] batman_adv: batadv0: Adding interface: batadv_slave_1 [ 70.885919][ T4536] 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. [ 70.890026][ T4536] batman_adv: batadv0: Not using interface batadv_slave_1 (retrying later): interface not active [ 70.943212][ T4536] device hsr_slave_0 entered promiscuous mode [ 70.991967][ T4536] device hsr_slave_1 entered promiscuous mode [ 71.799309][ T4536] netdevsim netdevsim0 netdevsim0: renamed from eth0 [ 71.823562][ T4536] netdevsim netdevsim0 netdevsim1: renamed from eth1 [ 71.863132][ T4536] netdevsim netdevsim0 netdevsim2: renamed from eth2 [ 71.893465][ T4536] netdevsim netdevsim0 netdevsim3: renamed from eth3 [ 71.976240][ T4536] 8021q: adding VLAN 0 to HW filter on device bond0 [ 71.982561][ T4536] 8021q: adding VLAN 0 to HW filter on device team0 [ 71.984032][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): veth1: link becomes ready [ 71.985522][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 71.988351][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bridge: link becomes ready [ 71.989910][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 71.991462][ T9] bridge0: port 1(bridge_slave_0) entered blocking state [ 71.992709][ T9] bridge0: port 1(bridge_slave_0) entered forwarding state [ 71.995120][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): bridge0: link becomes ready [ 72.003737][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bridge: link becomes ready [ 72.005430][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 72.006912][ T9] bridge0: port 2(bridge_slave_1) entered blocking state [ 72.008117][ T9] bridge0: port 2(bridge_slave_1) entered forwarding state [ 72.009803][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bond: link becomes ready [ 72.011475][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bond: link becomes ready [ 72.020067][ T4536] hsr0: Slave A (hsr_slave_0) is not up; please bring it up to get a fully working HSR network [ 72.023551][ T4536] hsr0: Slave B (hsr_slave_1) is not up; please bring it up to get a fully working HSR network [ 72.026473][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_team: link becomes ready [ 72.028522][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 72.030030][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_team: link becomes ready [ 72.032364][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 72.034002][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_hsr: link becomes ready [ 72.035510][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 72.037152][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_hsr: link becomes ready [ 72.038650][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 72.043335][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): team0: link becomes ready [ 72.044828][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): hsr0: link becomes ready [ 72.087394][ T4536] 8021q: adding VLAN 0 to HW filter on device batadv0 [ 72.092886][ T148] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan1: link becomes ready [ 72.094188][ T148] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan0: link becomes ready [ 72.097025][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_virt_wifi: link becomes ready [ 72.098560][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_virt_wifi: link becomes ready [ 72.106353][ T148] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_vlan: link becomes ready [ 72.107952][ T148] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_vlan: link becomes ready [ 72.109571][ T148] IPv6: ADDRCONF(NETDEV_CHANGE): vlan0: link becomes ready [ 72.110882][ T148] IPv6: ADDRCONF(NETDEV_CHANGE): vlan1: link becomes ready [ 72.114801][ T4536] device veth0_vlan entered promiscuous mode [ 72.118809][ T4536] device veth1_vlan entered promiscuous mode [ 72.127878][ T390] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan0: link becomes ready [ 72.129355][ T390] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan1: link becomes ready [ 72.130757][ T390] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_macvtap: link becomes ready [ 72.132749][ T390] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_macvtap: link becomes ready [ 72.135615][ T4536] device veth0_macvtap entered promiscuous mode [ 72.138204][ T4536] device veth1_macvtap entered promiscuous mode [ 72.144939][ T4536] batman_adv: batadv0: Interface activated: batadv_slave_0 [ 72.146151][ T390] IPv6: ADDRCONF(NETDEV_CHANGE): macvtap0: link becomes ready [ 72.147705][ T390] IPv6: ADDRCONF(NETDEV_CHANGE): macsec0: link becomes ready [ 72.149100][ T390] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_0: link becomes ready [ 72.150719][ T390] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_batadv: link becomes ready [ 72.153856][ T4536] batman_adv: batadv0: Interface activated: batadv_slave_1 [ 72.155838][ T148] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_1: link becomes ready [ 72.157407][ T148] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_batadv: link becomes ready [ 72.159493][ T4536] netdevsim netdevsim0 netdevsim0: set [1, 0] type 2 family 0 port 6081 - 0 [ 72.160868][ T4536] netdevsim netdevsim0 netdevsim1: set [1, 0] type 2 family 0 port 6081 - 0 [ 72.163637][ T4536] netdevsim netdevsim0 netdevsim2: set [1, 0] type 2 family 0 port 6081 - 0 [ 72.164974][ T4536] netdevsim netdevsim0 netdevsim3: set [1, 0] type 2 family 0 port 6081 - 0 1970/01/01 00:01:12 executed programs: 0 [ 72.286784][ T4695] chnl_net:caif_netlink_parms(): no params data found [ 72.304606][ T4695] bridge0: port 1(bridge_slave_0) entered blocking state [ 72.305769][ T4695] bridge0: port 1(bridge_slave_0) entered disabled state [ 72.307331][ T4695] device bridge_slave_0 entered promiscuous mode [ 72.309896][ T4695] bridge0: port 2(bridge_slave_1) entered blocking state [ 72.310983][ T4695] bridge0: port 2(bridge_slave_1) entered disabled state [ 72.312659][ T4695] device bridge_slave_1 entered promiscuous mode [ 72.321167][ T4695] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 72.325379][ T4695] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 72.334696][ T4695] team0: Port device team_slave_0 added [ 72.336570][ T4695] team0: Port device team_slave_1 added [ 72.344258][ T4695] batman_adv: batadv0: Adding interface: batadv_slave_0 [ 72.345377][ T4695] 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. [ 72.349383][ T4695] batman_adv: batadv0: Not using interface batadv_slave_0 (retrying later): interface not active [ 72.352045][ T4695] batman_adv: batadv0: Adding interface: batadv_slave_1 [ 72.353135][ T4695] 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. [ 72.357360][ T4695] batman_adv: batadv0: Not using interface batadv_slave_1 (retrying later): interface not active [ 72.393066][ T4695] device hsr_slave_0 entered promiscuous mode [ 72.442120][ T4695] device hsr_slave_1 entered promiscuous mode [ 72.462033][ T4695] debugfs: Directory 'hsr0' with parent 'hsr' already present! [ 72.463273][ T4695] Cannot create hsr debugfs directory [ 72.492859][ T4695] netdevsim netdevsim0 netdevsim3 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 74.262040][ T2436] Bluetooth: hci0: command 0x0409 tx timeout [ 75.674994][ T4695] netdevsim netdevsim0 netdevsim2 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 76.342283][ T4617] Bluetooth: hci0: command 0x041b tx timeout [ 78.174895][ T4695] netdevsim netdevsim0 netdevsim1 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 78.215649][ T4695] netdevsim netdevsim0 netdevsim0 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 78.346955][ T4695] netdevsim netdevsim0 netdevsim0: renamed from eth0 [ 78.396143][ T4695] netdevsim netdevsim0 netdevsim1: renamed from eth1 [ 78.421828][ T4632] Bluetooth: hci0: command 0x040f tx timeout [ 78.432978][ T4695] netdevsim netdevsim0 netdevsim2: renamed from eth2 [ 78.485911][ T4695] netdevsim netdevsim0 netdevsim3: renamed from eth3 [ 78.545455][ T4695] 8021q: adding VLAN 0 to HW filter on device bond0 [ 78.548991][ T390] IPv6: ADDRCONF(NETDEV_CHANGE): veth1: link becomes ready [ 78.550431][ T390] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 78.554498][ T4695] 8021q: adding VLAN 0 to HW filter on device team0 [ 78.556886][ T390] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bridge: link becomes ready [ 78.558533][ T390] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 78.559987][ T390] bridge0: port 1(bridge_slave_0) entered blocking state [ 78.561365][ T390] bridge0: port 1(bridge_slave_0) entered forwarding state [ 78.563019][ T390] IPv6: ADDRCONF(NETDEV_CHANGE): bridge0: link becomes ready [ 78.568495][ T390] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bridge: link becomes ready [ 78.570061][ T390] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 78.571703][ T390] bridge0: port 2(bridge_slave_1) entered blocking state [ 78.572839][ T390] bridge0: port 2(bridge_slave_1) entered forwarding state [ 78.575760][ T390] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bond: link becomes ready [ 78.578399][ T390] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bond: link becomes ready [ 78.581095][ T390] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_team: link becomes ready [ 78.583403][ T390] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 78.584970][ T390] IPv6: ADDRCONF(NETDEV_CHANGE): team0: link becomes ready [ 78.587814][ T390] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_team: link becomes ready [ 78.589294][ T390] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 78.593916][ T390] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_hsr: link becomes ready [ 78.595397][ T390] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 78.598048][ T390] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_hsr: link becomes ready [ 78.599464][ T390] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 78.601957][ T4695] IPv6: ADDRCONF(NETDEV_CHANGE): hsr0: link becomes ready [ 78.638715][ T390] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan1: link becomes ready [ 78.640012][ T390] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan0: link becomes ready [ 78.644185][ T4695] 8021q: adding VLAN 0 to HW filter on device batadv0 [ 78.650392][ T390] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_virt_wifi: link becomes ready [ 78.652289][ T390] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_virt_wifi: link becomes ready [ 78.658112][ T390] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_vlan: link becomes ready [ 78.659658][ T390] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_vlan: link becomes ready [ 78.661175][ T390] IPv6: ADDRCONF(NETDEV_CHANGE): vlan0: link becomes ready [ 78.663464][ T390] IPv6: ADDRCONF(NETDEV_CHANGE): vlan1: link becomes ready [ 78.668954][ T4695] device veth0_vlan entered promiscuous mode [ 78.673009][ T4695] device veth1_vlan entered promiscuous mode [ 78.679985][ T390] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan0: link becomes ready [ 78.681428][ T390] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan1: link becomes ready [ 78.683489][ T390] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_macvtap: link becomes ready [ 78.685051][ T390] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_macvtap: link becomes ready [ 78.688483][ T4695] device veth0_macvtap entered promiscuous mode [ 78.690743][ T4695] device veth1_macvtap entered promiscuous mode [ 78.699525][ T4695] batman_adv: The newly added mac address (aa:aa:aa:aa:aa:3e) already exists on: batadv_slave_0 [ 78.701251][ T4695] batman_adv: It is strongly recommended to keep mac addresses unique to avoid problems! [ 78.704438][ T4695] batman_adv: batadv0: Interface activated: batadv_slave_0 [ 78.705849][ T148] IPv6: ADDRCONF(NETDEV_CHANGE): macvtap0: link becomes ready [ 78.707360][ T148] IPv6: ADDRCONF(NETDEV_CHANGE): macsec0: link becomes ready [ 78.708858][ T148] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_0: link becomes ready [ 78.710389][ T148] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_batadv: link becomes ready [ 78.713448][ T4695] batman_adv: The newly added mac address (aa:aa:aa:aa:aa:3f) already exists on: batadv_slave_1 [ 78.715051][ T4695] batman_adv: It is strongly recommended to keep mac addresses unique to avoid problems! [ 78.717124][ T4695] batman_adv: batadv0: Interface activated: batadv_slave_1 [ 78.718283][ T148] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_1: link becomes ready [ 78.719891][ T148] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_batadv: link becomes ready [ 78.723575][ T4695] netdevsim netdevsim0 netdevsim0: set [1, 0] type 2 family 0 port 6081 - 0 [ 78.724992][ T4695] netdevsim netdevsim0 netdevsim1: set [1, 0] type 2 family 0 port 6081 - 0 [ 78.726438][ T4695] netdevsim netdevsim0 netdevsim2: set [1, 0] type 2 family 0 port 6081 - 0 [ 78.727863][ T4695] netdevsim netdevsim0 netdevsim3: set [1, 0] type 2 family 0 port 6081 - 0 [ 78.749253][ T390] wlan0: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 78.750549][ T390] wlan0: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 78.756386][ T390] IPv6: ADDRCONF(NETDEV_CHANGE): wlan0: link becomes ready [ 78.759547][ T390] wlan1: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 78.760735][ T390] wlan1: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 78.762912][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): wlan1: link becomes ready 1970/01/01 00:01:18 executed programs: 2 [ 78.794071][ T288] device hsr_slave_0 left promiscuous mode [ 78.832085][ T288] device hsr_slave_1 left promiscuous mode [ 78.871419][ T4929] loop0: detected capacity change from 0 to 32768 [ 78.932064][ T288] batman_adv: batadv0: Interface deactivated: batadv_slave_0 [ 78.933256][ T288] batman_adv: batadv0: Removing interface: batadv_slave_0 [ 78.934855][ T288] batman_adv: batadv0: Interface deactivated: batadv_slave_1 [ 78.936079][ T288] batman_adv: batadv0: Removing interface: batadv_slave_1 [ 78.936575][ T4929] BTRFS: device fsid ed167579-eb65-4e76-9a50-61ac97e9b59d devid 1 transid 8 /dev/loop0 scanned by syz.0.15 (4929) [ 78.943455][ T4929] BTRFS info (device loop0): using sha256 (sha256-ce) checksum algorithm [ 78.944863][ T4929] BTRFS info (device loop0): setting nodatacow, compression disabled [ 78.946128][ T4929] BTRFS info (device loop0): setting datacow [ 78.947081][ T4929] BTRFS info (device loop0): doing ref verification [ 78.948101][ T288] device bridge_slave_1 left promiscuous mode [ 78.948200][ T4929] BTRFS info (device loop0): force clearing of disk cache [ 78.949272][ T288] bridge0: port 2(bridge_slave_1) entered disabled state [ 78.950538][ T4929] BTRFS info (device loop0): turning off barriers [ 78.955207][ T4929] BTRFS info (device loop0): use zlib compression, level 3 [ 78.956393][ T4929] BTRFS info (device loop0): using free space tree [ 78.957452][ T4929] BTRFS info (device loop0): has skinny extents [ 78.969412][ T4929] BTRFS info (device loop0): clearing free space tree [ 78.970874][ T4929] BTRFS info (device loop0): clearing compat-ro feature flag for FREE_SPACE_TREE (0x1) [ 78.973564][ T4929] BTRFS info (device loop0): clearing compat-ro feature flag for FREE_SPACE_TREE_VALID (0x2) [ 78.980690][ T4929] BTRFS info (device loop0): creating free space tree [ 78.984146][ T4929] BTRFS info (device loop0): setting compat-ro feature flag for FREE_SPACE_TREE (0x1) [ 78.985708][ T4929] BTRFS info (device loop0): setting compat-ro feature flag for FREE_SPACE_TREE_VALID (0x2) [ 78.993561][ T288] device bridge_slave_0 left promiscuous mode [ 78.993833][ T4929] FAULT_INJECTION: forcing a failure. [ 78.993833][ T4929] name failslab, interval 1, probability 0, space 0, times 1 [ 78.994577][ T288] bridge0: port 1(bridge_slave_0) entered disabled state [ 78.996529][ T4929] CPU: 0 PID: 4929 Comm: syz.0.15 Not tainted syzkaller #0 [ 78.998859][ T4929] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/18/2026 [ 79.000538][ T4929] Call trace: [ 79.001104][ T4929] dump_backtrace+0x0/0x458 [ 79.001888][ T4929] show_stack+0x2c/0x3c [ 79.002611][ T4929] __dump_stack+0x30/0x40 [ 79.003372][ T4929] dump_stack_lvl+0xf4/0x15c [ 79.004122][ T4929] dump_stack+0x1c/0x5c [ 79.004798][ T4929] should_fail+0x3bc/0x514 [ 79.005574][ T4929] __should_failslab+0xbc/0x10c [ 79.006392][ T4929] should_failslab+0x10/0x28 [ 79.007213][ T4929] slab_pre_alloc_hook+0x64/0xe8 [ 79.008023][ T4929] kmem_cache_alloc+0x94/0x3d4 [ 79.008836][ T4929] btrfs_alloc_path+0x5c/0x68 [ 79.009650][ T4929] btrfs_insert_dir_item+0x184/0x3e8 [ 79.010538][ T4929] btrfs_add_link+0x2b0/0xa9c [ 79.011306][ T4929] btrfs_create+0x468/0x514 [ 79.012139][ T4929] path_openat+0xe18/0x2718 [ 79.012848][ T4929] do_filp_open+0x184/0x368 [ 79.013621][ T4929] do_sys_openat2+0x134/0x3f4 [ 79.014448][ T4929] __arm64_sys_openat+0x118/0x14c [ 79.015288][ T4929] invoke_syscall+0x98/0x2b0 [ 79.015998][ T4929] el0_svc_common+0x138/0x258 [ 79.016777][ T4929] do_el0_svc+0x58/0x13c [ 79.017541][ T4929] el0_svc+0x78/0x1d0 [ 79.018228][ T4929] el0t_64_sync_handler+0xcc/0xe4 [ 79.019117][ T4929] el0t_64_sync+0x1a0/0x1a4 [ 79.022233][ T4929] ------------[ cut here ]------------ [ 79.023199][ T4929] WARNING: CPU: 0 PID: 4929 at fs/btrfs/inode.c:6776 btrfs_add_link+0x718/0xa9c [ 79.024622][ T4929] Modules linked in: [ 79.025263][ T4929] CPU: 0 PID: 4929 Comm: syz.0.15 Not tainted syzkaller #0 [ 79.026512][ T4929] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/18/2026 [ 79.028147][ T4929] pstate: 62400005 (nZCv daif +PAN -UAO +TCO -DIT -SSBS BTYPE=--) [ 79.029511][ T4929] pc : btrfs_add_link+0x718/0xa9c [ 79.030312][ T4929] lr : btrfs_add_link+0x718/0xa9c [ 79.031122][ T4929] sp : ffff80001f477580 [ 79.031801][ T4929] x29: ffff80001f477680 x28: ffff0000dedc1210 x27: 0000000000000108 [ 79.033167][ T4929] x26: 00000000fffffff4 x25: 0000000000000000 x24: dfff800000000000 [ 79.034410][ T4929] x23: 0000000000000014 x22: 1fffe0001bdb824d x21: ffff700003e8eeb8 [ 79.035745][ T4929] x20: 00000000fffffff4 x19: ffff0000dedc1268 x18: 0000000000000001 [ 79.037094][ T4929] x17: 0000000000000000 x16: ffff80001125f77c x15: 00000000ffffffff [ 79.038424][ T4929] x14: 0000000000000001 x13: 1fffe000341f05ab x12: 0000000000ff0100 [ 79.039735][ T4929] x11: 0000000000000000 x10: 0000000000000000 x9 : 32260568f93e0700 [ 79.041073][ T4929] x8 : 32260568f93e0700 x7 : 0000000000000001 x6 : 0000000000000001 [ 79.042484][ T4929] x5 : ffff80001f476e98 x4 : ffff80001437f3e0 x3 : ffff80000850932c [ 79.043850][ T4929] x2 : 0000000000000001 x1 : 0000000100000000 x0 : 0000000000000026 [ 79.045134][ T4929] Call trace: [ 79.045673][ T4929] btrfs_add_link+0x718/0xa9c [ 79.046460][ T4929] btrfs_create+0x468/0x514 [ 79.047235][ T4929] path_openat+0xe18/0x2718 [ 79.048003][ T4929] do_filp_open+0x184/0x368 [ 79.048734][ T4929] do_sys_openat2+0x134/0x3f4 [ 79.049505][ T4929] __arm64_sys_openat+0x118/0x14c [ 79.050336][ T4929] invoke_syscall+0x98/0x2b0 [ 79.051095][ T4929] el0_svc_common+0x138/0x258 [ 79.051874][ T4929] do_el0_svc+0x58/0x13c [ 79.052602][ T4929] el0_svc+0x78/0x1d0 [ 79.053308][ T4929] el0t_64_sync_handler+0xcc/0xe4 [ 79.054138][ T4929] el0t_64_sync+0x1a0/0x1a4 [ 79.054835][ T4929] irq event stamp: 82198 [ 79.055512][ T4929] hardirqs last enabled at (82197): [] __up_console_sem+0xb4/0xfc [ 79.057126][ T4929] hardirqs last disabled at (82198): [] el1_dbg+0x24/0x80 [ 79.058475][ T4929] softirqs last enabled at (82178): [] handle_softirqs+0xa40/0xbe4 [ 79.060125][ T4929] softirqs last disabled at (82163): [] __irq_exit_rcu+0x240/0x43c [ 79.061771][ T4929] ---[ end trace 11760cd20ce9d7e0 ]--- [ 79.065560][ T4929] BTRFS: error (device loop0) in btrfs_add_link:6776: errno=-12 Out of memory [ 79.067019][ T4929] BTRFS info (device loop0): forced readonly [ 79.133022][ T288] device veth1_macvtap left promiscuous mode [ 79.134094][ T288] device veth0_macvtap left promiscuous mode [ 79.135207][ T288] device veth1_vlan left promiscuous mode [ 79.136210][ T288] device veth0_vlan left promiscuous mode [ 79.242957][ T288] team0 (unregistering): Port device team_slave_1 removed [ 79.247278][ T288] team0 (unregistering): Port device team_slave_0 removed [ 79.251158][ T4952] loop0: detected capacity change from 0 to 32768 [ 79.251211][ T288] bond0 (unregistering): (slave bond_slave_1): Releasing backup interface [ 79.295130][ T288] bond0 (unregistering): (slave bond_slave_0): Releasing backup interface [ 79.335573][ T4952] BTRFS: device fsid ed167579-eb65-4e76-9a50-61ac97e9b59d devid 1 transid 8 /dev/loop0 scanned by syz.0.16 (4952) [ 79.338872][ T4952] BTRFS info (device loop0): using sha256 (sha256-ce) checksum algorithm [ 79.340246][ T4952] BTRFS info (device loop0): setting nodatacow, compression disabled [ 79.341640][ T4952] BTRFS info (device loop0): setting datacow [ 79.342925][ T4952] BTRFS info (device loop0): doing ref verification [ 79.343886][ T4952] BTRFS info (device loop0): force clearing of disk cache [ 79.345080][ T4952] BTRFS info (device loop0): turning off barriers [ 79.346101][ T4952] BTRFS info (device loop0): use zlib compression, level 3 [ 79.347911][ T4952] BTRFS info (device loop0): using free space tree [ 79.348991][ T4952] BTRFS info (device loop0): has skinny extents [ 79.391127][ T4952] BTRFS info (device loop0): clearing free space tree [ 79.392502][ T4952] BTRFS info (device loop0): clearing compat-ro feature flag for FREE_SPACE_TREE (0x1) [ 79.393997][ T4952] BTRFS info (device loop0): clearing compat-ro feature flag for FREE_SPACE_TREE_VALID (0x2) [ 79.397611][ T4952] BTRFS info (device loop0): creating free space tree [ 79.398949][ T4952] BTRFS info (device loop0): setting compat-ro feature flag for FREE_SPACE_TREE (0x1) [ 79.400405][ T4952] BTRFS info (device loop0): setting compat-ro feature flag for FREE_SPACE_TREE_VALID (0x2) [ 79.406583][ T4952] FAULT_INJECTION: forcing a failure. [ 79.406583][ T4952] name failslab, interval 1, probability 0, space 0, times 0 [ 79.407915][ T288] bond0 (unregistering): Released all slaves [ 79.408620][ T4952] CPU: 1 PID: 4952 Comm: syz.0.16 Tainted: G W syzkaller #0 [ 79.410883][ T4952] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/18/2026 [ 79.412624][ T4952] Call trace: [ 79.413205][ T4952] dump_backtrace+0x0/0x458 [ 79.413988][ T4952] show_stack+0x2c/0x3c [ 79.414695][ T4952] __dump_stack+0x30/0x40 [ 79.415391][ T4952] dump_stack_lvl+0xf4/0x15c [ 79.416164][ T4952] dump_stack+0x1c/0x5c [ 79.416834][ T4952] should_fail+0x3bc/0x514 [ 79.417531][ T4952] __should_failslab+0xbc/0x10c [ 79.418333][ T4952] should_failslab+0x10/0x28 [ 79.419039][ T4952] slab_pre_alloc_hook+0x64/0xe8 [ 79.419960][ T4952] kmem_cache_alloc+0x94/0x3d4 [ 79.420778][ T4952] btrfs_get_or_create_delayed_node+0x114/0x4a8 [ 79.421787][ T4952] btrfs_delayed_update_inode+0x3c/0x1b68 [ 79.422735][ T4952] btrfs_update_inode+0x210/0x3d4 [ 79.423568][ T4952] btrfs_create+0x364/0x514 [ 79.424295][ T4952] path_openat+0xe18/0x2718 [ 79.425069][ T4952] do_filp_open+0x184/0x368 [ 79.425775][ T4952] do_sys_openat2+0x134/0x3f4 [ 79.426551][ T4952] __arm64_sys_openat+0x118/0x14c [ 79.427388][ T4952] invoke_syscall+0x98/0x2b0 [ 79.428151][ T4952] el0_svc_common+0x138/0x258 [ 79.428898][ T4952] do_el0_svc+0x58/0x13c [ 79.429573][ T4952] el0_svc+0x78/0x1d0 [ 79.430244][ T4952] el0t_64_sync_handler+0xcc/0xe4 [ 79.431111][ T4952] el0t_64_sync+0x1a0/0x1a4 [ 79.640486][ T4974] loop0: detected capacity change from 0 to 32768 [ 79.683112][ T4974] BTRFS: device fsid ed167579-eb65-4e76-9a50-61ac97e9b59d devid 1 transid 8 /dev/loop0 scanned by syz.0.17 (4974) [ 79.686587][ T4974] BTRFS info (device loop0): using sha256 (sha256-ce) checksum algorithm [ 79.689502][ T4974] BTRFS info (device loop0): setting nodatacow, compression disabled [ 79.690866][ T4974] BTRFS info (device loop0): setting datacow [ 79.691893][ T4974] BTRFS info (device loop0): doing ref verification [ 79.693015][ T4974] BTRFS info (device loop0): force clearing of disk cache [ 79.694222][ T4974] BTRFS info (device loop0): turning off barriers [ 79.695320][ T4974] BTRFS info (device loop0): use zlib compression, level 3 [ 79.696535][ T4974] BTRFS info (device loop0): using free space tree [ 79.697708][ T4974] BTRFS info (device loop0): has skinny extents [ 79.707500][ T4974] BTRFS info (device loop0): clearing free space tree [ 79.708720][ T4974] BTRFS info (device loop0): clearing compat-ro feature flag for FREE_SPACE_TREE (0x1) [ 79.710397][ T4974] BTRFS info (device loop0): clearing compat-ro feature flag for FREE_SPACE_TREE_VALID (0x2) [ 79.714334][ T4974] BTRFS info (device loop0): creating free space tree [ 79.715962][ T4974] BTRFS info (device loop0): setting compat-ro feature flag for FREE_SPACE_TREE (0x1) [ 79.717478][ T4974] BTRFS info (device loop0): setting compat-ro feature flag for FREE_SPACE_TREE_VALID (0x2) [ 79.722090][ T4974] FAULT_INJECTION: forcing a failure. [ 79.722090][ T4974] name failslab, interval 1, probability 0, space 0, times 0 [ 79.724201][ T4974] CPU: 1 PID: 4974 Comm: syz.0.17 Tainted: G W syzkaller #0 [ 79.725646][ T4974] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/18/2026 [ 79.727369][ T4974] Call trace: [ 79.727913][ T4974] dump_backtrace+0x0/0x458 [ 79.728657][ T4974] show_stack+0x2c/0x3c [ 79.729374][ T4974] __dump_stack+0x30/0x40 [ 79.730098][ T4974] dump_stack_lvl+0xf4/0x15c [ 79.730841][ T4974] dump_stack+0x1c/0x5c [ 79.731592][ T4974] should_fail+0x3bc/0x514 [ 79.732401][ T4974] __should_failslab+0xbc/0x10c [ 79.733219][ T4974] should_failslab+0x10/0x28 [ 79.733992][ T4974] slab_pre_alloc_hook+0x64/0xe8 [ 79.734826][ T4974] kmem_cache_alloc+0x94/0x3d4 [ 79.735596][ T4974] btrfs_alloc_path+0x5c/0x68 [ 79.736381][ T4974] btrfs_insert_dir_item+0x184/0x3e8 [ 79.737227][ T4974] btrfs_add_link+0x2b0/0xa9c [ 79.738010][ T4974] btrfs_create+0x468/0x514 [ 79.738794][ T4974] path_openat+0xe18/0x2718 [ 79.739569][ T4974] do_filp_open+0x184/0x368 [ 79.740325][ T4974] do_sys_openat2+0x134/0x3f4 [ 79.741099][ T4974] __arm64_sys_openat+0x118/0x14c [ 79.741950][ T4974] invoke_syscall+0x98/0x2b0 [ 79.742714][ T4974] el0_svc_common+0x138/0x258 [ 79.743468][ T4974] do_el0_svc+0x58/0x13c [ 79.744145][ T4974] el0_svc+0x78/0x1d0 [ 79.744842][ T4974] el0t_64_sync_handler+0xcc/0xe4 [ 79.745666][ T4974] el0t_64_sync+0x1a0/0x1a4 [ 79.749262][ T4974] ------------[ cut here ]------------ [ 79.750213][ T4974] WARNING: CPU: 1 PID: 4974 at fs/btrfs/inode.c:6776 btrfs_add_link+0x718/0xa9c [ 79.751697][ T4974] Modules linked in: [ 79.752413][ T4974] CPU: 1 PID: 4974 Comm: syz.0.17 Tainted: G W syzkaller #0 [ 79.753742][ T4974] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/18/2026 [ 79.755433][ T4974] pstate: 62400005 (nZCv daif +PAN -UAO +TCO -DIT -SSBS BTYPE=--) [ 79.756750][ T4974] pc : btrfs_add_link+0x718/0xa9c [ 79.757596][ T4974] lr : btrfs_add_link+0x718/0xa9c [ 79.758396][ T4974] sp : ffff80001fe37580 [ 79.759107][ T4974] x29: ffff80001fe37680 x28: ffff0000ded9f4d0 x27: 0000000000000108 [ 79.760424][ T4974] x26: 00000000fffffff4 x25: 0000000000000000 x24: dfff800000000000 [ 79.761776][ T4974] x23: 0000000000000014 x22: 1fffe0001bdb3ea5 x21: ffff700003fc6eb8 [ 79.763175][ T4974] x20: 00000000fffffff4 x19: ffff0000ded9f528 x18: 0000000000000001 [ 79.764502][ T4974] x17: 0000000000000000 x16: ffff80001125f77c x15: 00000000ffffffff [ 79.765881][ T4974] x14: 0000000000000001 x13: 1fffe000341f47ab x12: 0000000000ff0100 [ 79.767246][ T4974] x11: 0000000000000000 x10: 0000000000000000 x9 : b16e64b7b8050100 [ 79.768611][ T4974] x8 : b16e64b7b8050100 x7 : 0000000000000001 x6 : 0000000000000001 [ 79.769974][ T4974] x5 : ffff80001fe36e98 x4 : ffff80001437f3e0 x3 : ffff80000850932c [ 79.771337][ T4974] x2 : 0000000000000001 x1 : 0000000100000000 x0 : 0000000000000026 [ 79.772694][ T4974] Call trace: [ 79.773241][ T4974] btrfs_add_link+0x718/0xa9c [ 79.773981][ T4974] btrfs_create+0x468/0x514 [ 79.774738][ T4974] path_openat+0xe18/0x2718 [ 79.775491][ T4974] do_filp_open+0x184/0x368 [ 79.776197][ T4974] do_sys_openat2+0x134/0x3f4 [ 79.776935][ T4974] __arm64_sys_openat+0x118/0x14c [ 79.777757][ T4974] invoke_syscall+0x98/0x2b0 [ 79.778550][ T4974] el0_svc_common+0x138/0x258 [ 79.779288][ T4974] do_el0_svc+0x58/0x13c [ 79.779954][ T4974] el0_svc+0x78/0x1d0 [ 79.780622][ T4974] el0t_64_sync_handler+0xcc/0xe4 [ 79.781434][ T4974] el0t_64_sync+0x1a0/0x1a4 [ 79.782199][ T4974] irq event stamp: 80334 [ 79.782900][ T4974] hardirqs last enabled at (80333): [] __up_console_sem+0xb4/0xfc [ 79.784532][ T4974] hardirqs last disabled at (80334): [] el1_dbg+0x24/0x80 [ 79.786079][ T4974] softirqs last enabled at (80314): [] handle_softirqs+0xa40/0xbe4 [ 79.787734][ T4974] softirqs last disabled at (80259): [] __irq_exit_rcu+0x240/0x43c [ 79.789388][ T4974] ---[ end trace 11760cd20ce9d7e1 ]--- [ 79.795353][ T4974] BTRFS: error (device loop0) in btrfs_add_link:6776: errno=-12 Out of memory [ 79.796806][ T4974] BTRFS info (device loop0): forced readonly [ 79.993800][ T4996] loop0: detected capacity change from 0 to 32768 [ 80.044966][ T4996] BTRFS: device fsid ed167579-eb65-4e76-9a50-61ac97e9b59d devid 1 transid 8 /dev/loop0 scanned by syz.0.18 (4996) [ 80.048372][ T4996] BTRFS info (device loop0): using sha256 (sha256-ce) checksum algorithm [ 80.049759][ T4996] BTRFS info (device loop0): setting nodatacow, compression disabled [ 80.051337][ T4996] BTRFS info (device loop0): setting datacow [ 80.052748][ T4996] BTRFS info (device loop0): doing ref verification [ 80.053815][ T4996] BTRFS info (device loop0): force clearing of disk cache [ 80.055003][ T4996] BTRFS info (device loop0): turning off barriers [ 80.056059][ T4996] BTRFS info (device loop0): use zlib compression, level 3 [ 80.057232][ T4996] BTRFS info (device loop0): using free space tree [ 80.058298][ T4996] BTRFS info (device loop0): has skinny extents [ 80.066567][ T4996] BTRFS info (device loop0): clearing free space tree [ 80.067721][ T4996] BTRFS info (device loop0): clearing compat-ro feature flag for FREE_SPACE_TREE (0x1) [ 80.069438][ T4996] BTRFS info (device loop0): clearing compat-ro feature flag for FREE_SPACE_TREE_VALID (0x2) [ 80.074939][ T4996] BTRFS info (device loop0): creating free space tree [ 80.076378][ T4996] BTRFS info (device loop0): setting compat-ro feature flag for FREE_SPACE_TREE (0x1) [ 80.077940][ T4996] BTRFS info (device loop0): setting compat-ro feature flag for FREE_SPACE_TREE_VALID (0x2) [ 80.082593][ T4996] FAULT_INJECTION: forcing a failure. [ 80.082593][ T4996] name failslab, interval 1, probability 0, space 0, times 0 [ 80.084643][ T4996] CPU: 1 PID: 4996 Comm: syz.0.18 Tainted: G W syzkaller #0 [ 80.085987][ T4996] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/18/2026 [ 80.087619][ T4996] Call trace: [ 80.088143][ T4996] dump_backtrace+0x0/0x458 [ 80.088863][ T4996] show_stack+0x2c/0x3c [ 80.089511][ T4996] __dump_stack+0x30/0x40 [ 80.090230][ T4996] dump_stack_lvl+0xf4/0x15c [ 80.090987][ T4996] dump_stack+0x1c/0x5c [ 80.091617][ T4996] should_fail+0x3bc/0x514 [ 80.092352][ T4996] __should_failslab+0xbc/0x10c [ 80.093126][ T4996] should_failslab+0x10/0x28 [ 80.093858][ T4996] slab_pre_alloc_hook+0x64/0xe8 [ 80.094726][ T4996] kmem_cache_alloc+0x94/0x3d4 [ 80.095513][ T4996] btrfs_alloc_path+0x5c/0x68 [ 80.096307][ T4996] btrfs_insert_dir_item+0x184/0x3e8 [ 80.097159][ T4996] btrfs_add_link+0x2b0/0xa9c [ 80.097928][ T4996] btrfs_create+0x468/0x514 [ 80.098659][ T4996] path_openat+0xe18/0x2718 [ 80.099369][ T4996] do_filp_open+0x184/0x368 [ 80.100095][ T4996] do_sys_openat2+0x134/0x3f4 [ 80.100839][ T4996] __arm64_sys_openat+0x118/0x14c [ 80.101728][ T4996] invoke_syscall+0x98/0x2b0 [ 80.102477][ T4996] el0_svc_common+0x138/0x258 [ 80.103212][ T4996] do_el0_svc+0x58/0x13c [ 80.103912][ T4996] el0_svc+0x78/0x1d0 [ 80.104503][ T4996] el0t_64_sync_handler+0xcc/0xe4 [ 80.105297][ T4996] el0t_64_sync+0x1a0/0x1a4 [ 80.107676][ T4996] ------------[ cut here ]------------ [ 80.108582][ T4996] WARNING: CPU: 1 PID: 4996 at fs/btrfs/inode.c:6776 btrfs_add_link+0x718/0xa9c [ 80.110086][ T4996] Modules linked in: [ 80.110737][ T4996] CPU: 1 PID: 4996 Comm: syz.0.18 Tainted: G W syzkaller #0 [ 80.112029][ T4996] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/18/2026 [ 80.113700][ T4996] pstate: 62400005 (nZCv daif +PAN -UAO +TCO -DIT -SSBS BTYPE=--) [ 80.114965][ T4996] pc : btrfs_add_link+0x718/0xa9c [ 80.115844][ T4996] lr : btrfs_add_link+0x718/0xa9c [ 80.116675][ T4996] sp : ffff8000202c7580 [ 80.117380][ T4996] x29: ffff8000202c7680 x28: ffff0000ded9f790 x27: 0000000000000108 [ 80.118768][ T4996] x26: 00000000fffffff4 x25: 0000000000000000 x24: dfff800000000000 [ 80.120161][ T4996] x23: 0000000000000014 x22: 1fffe0001bdb3efd x21: ffff700004058eb8 [ 80.121484][ T4996] x20: 00000000fffffff4 x19: ffff0000ded9f7e8 x18: 0000000000000001 [ 80.122821][ T4996] x17: 0000000000000000 x16: ffff80001125f77c x15: 00000000ffffffff [ 80.124115][ T4996] x14: 0000000000000001 x13: 1fffe000341f47ab x12: 0000000000ff0100 [ 80.125428][ T4996] x11: 0000000000000000 x10: 0000000000000000 x9 : b859944ee59d1800 [ 80.126821][ T4996] x8 : b859944ee59d1800 x7 : 0000000000000001 x6 : 0000000000000001 [ 80.128221][ T4996] x5 : ffff8000202c6e98 x4 : ffff80001437f3e0 x3 : ffff80000850932c [ 80.129542][ T4996] x2 : 0000000000000001 x1 : 0000000100000000 x0 : 0000000000000026 [ 80.130837][ T4996] Call trace: [ 80.131398][ T4996] btrfs_add_link+0x718/0xa9c [ 80.132146][ T4996] btrfs_create+0x468/0x514 [ 80.132881][ T4996] path_openat+0xe18/0x2718 [ 80.133616][ T4996] do_filp_open+0x184/0x368 [ 80.134370][ T4996] do_sys_openat2+0x134/0x3f4 [ 80.135129][ T4996] __arm64_sys_openat+0x118/0x14c [ 80.135994][ T4996] invoke_syscall+0x98/0x2b0 [ 80.136769][ T4996] el0_svc_common+0x138/0x258 [ 80.137581][ T4996] do_el0_svc+0x58/0x13c [ 80.138299][ T4996] el0_svc+0x78/0x1d0 [ 80.138967][ T4996] el0t_64_sync_handler+0xcc/0xe4 [ 80.139802][ T4996] el0t_64_sync+0x1a0/0x1a4 [ 80.140527][ T4996] irq event stamp: 80292 [ 80.141251][ T4996] hardirqs last enabled at (80291): [] __up_console_sem+0xb4/0xfc [ 80.142927][ T4996] hardirqs last disabled at (80292): [] el1_dbg+0x24/0x80 [ 80.144493][ T4996] softirqs last enabled at (80272): [] handle_softirqs+0xa40/0xbe4 [ 80.146072][ T4996] softirqs last disabled at (80207): [] __irq_exit_rcu+0x240/0x43c [ 80.147701][ T4996] ---[ end trace 11760cd20ce9d7e2 ]--- [ 80.148947][ T4996] BTRFS: error (device loop0) in btrfs_add_link:6776: errno=-12 Out of memory [ 80.150280][ T4996] BTRFS info (device loop0): forced readonly [ 80.337861][ T5018] loop0: detected capacity change from 0 to 32768 [ 80.346470][ T5018] BTRFS: device fsid ed167579-eb65-4e76-9a50-61ac97e9b59d devid 1 transid 8 /dev/loop0 scanned by syz.0.19 (5018) [ 80.351444][ T5018] BTRFS info (device loop0): using sha256 (sha256-ce) checksum algorithm [ 80.353321][ T5018] BTRFS info (device loop0): setting nodatacow, compression disabled [ 80.354599][ T5018] BTRFS info (device loop0): setting datacow [ 80.355626][ T5018] BTRFS info (device loop0): doing ref verification [ 80.356760][ T5018] BTRFS info (device loop0): force clearing of disk cache [ 80.357995][ T5018] BTRFS info (device loop0): turning off barriers [ 80.359110][ T5018] BTRFS info (device loop0): use zlib compression, level 3 [ 80.360336][ T5018] BTRFS info (device loop0): using free space tree [ 80.361419][ T5018] BTRFS info (device loop0): has skinny extents [ 80.369116][ T5018] BTRFS info (device loop0): clearing free space tree [ 80.370209][ T5018] BTRFS info (device loop0): clearing compat-ro feature flag for FREE_SPACE_TREE (0x1) [ 80.372261][ T5018] BTRFS info (device loop0): clearing compat-ro feature flag for FREE_SPACE_TREE_VALID (0x2) [ 80.375619][ T5018] BTRFS info (device loop0): creating free space tree [ 80.377052][ T5018] BTRFS info (device loop0): setting compat-ro feature flag for FREE_SPACE_TREE (0x1) [ 80.378569][ T5018] BTRFS info (device loop0): setting compat-ro feature flag for FREE_SPACE_TREE_VALID (0x2) [ 80.383435][ T5018] FAULT_INJECTION: forcing a failure. [ 80.383435][ T5018] name failslab, interval 1, probability 0, space 0, times 0 [ 80.385406][ T5018] CPU: 0 PID: 5018 Comm: syz.0.19 Tainted: G W syzkaller #0 [ 80.386740][ T5018] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/18/2026 [ 80.388347][ T5018] Call trace: [ 80.388868][ T5018] dump_backtrace+0x0/0x458 [ 80.389628][ T5018] show_stack+0x2c/0x3c [ 80.390363][ T5018] __dump_stack+0x30/0x40 [ 80.391158][ T5018] dump_stack_lvl+0xf4/0x15c [ 80.391929][ T5018] dump_stack+0x1c/0x5c [ 80.392630][ T5018] should_fail+0x3bc/0x514 [ 80.393378][ T5018] __should_failslab+0xbc/0x10c [ 80.394141][ T5018] should_failslab+0x10/0x28 [ 80.394882][ T5018] slab_pre_alloc_hook+0x64/0xe8 [ 80.395685][ T5018] kmem_cache_alloc+0x94/0x3d4 [ 80.396587][ T5018] btrfs_get_or_create_delayed_node+0x114/0x4a8 [ 80.397639][ T5018] btrfs_delayed_update_inode+0x3c/0x1b68 [ 80.398583][ T5018] btrfs_update_inode+0x210/0x3d4 [ 80.399374][ T5018] btrfs_create+0x364/0x514 [ 80.400150][ T5018] path_openat+0xe18/0x2718 [ 80.400938][ T5018] do_filp_open+0x184/0x368 [ 80.401690][ T5018] do_sys_openat2+0x134/0x3f4 [ 80.402496][ T5018] __arm64_sys_openat+0x118/0x14c [ 80.403371][ T5018] invoke_syscall+0x98/0x2b0 [ 80.404135][ T5018] el0_svc_common+0x138/0x258 [ 80.404911][ T5018] do_el0_svc+0x58/0x13c [ 80.405699][ T5018] el0_svc+0x78/0x1d0 [ 80.406294][ T5018] el0t_64_sync_handler+0xcc/0xe4 [ 80.407142][ T5018] el0t_64_sync+0x1a0/0x1a4 [ 80.502020][ T4161] Bluetooth: hci0: command 0x0419 tx timeout [ 80.574943][ T5040] loop0: detected capacity change from 0 to 32768 [ 80.623145][ T5040] BTRFS: device fsid ed167579-eb65-4e76-9a50-61ac97e9b59d devid 1 transid 8 /dev/loop0 scanned by syz.0.20 (5040) [ 80.716598][ T5040] BTRFS info (device loop0): using sha256 (sha256-ce) checksum algorithm [ 80.718133][ T5040] BTRFS info (device loop0): setting nodatacow, compression disabled [ 80.719469][ T5040] BTRFS info (device loop0): setting datacow [ 80.720689][ T5040] BTRFS info (device loop0): doing ref verification [ 80.724501][ T5040] BTRFS info (device loop0): force clearing of disk cache [ 80.725654][ T5040] BTRFS info (device loop0): turning off barriers [ 80.726743][ T5040] BTRFS info (device loop0): use zlib compression, level 3 [ 80.727918][ T5040] BTRFS info (device loop0): using free space tree [ 80.728954][ T5040] BTRFS info (device loop0): has skinny extents [ 80.857895][ T5040] BTRFS info (device loop0): clearing free space tree [ 80.859130][ T5040] BTRFS info (device loop0): clearing compat-ro feature flag for FREE_SPACE_TREE (0x1) [ 80.860851][ T5040] BTRFS info (device loop0): clearing compat-ro feature flag for FREE_SPACE_TREE_VALID (0x2) [ 80.865568][ T5040] BTRFS info (device loop0): creating free space tree [ 80.866980][ T5040] BTRFS info (device loop0): setting compat-ro feature flag for FREE_SPACE_TREE (0x1) [ 80.868515][ T5040] BTRFS info (device loop0): setting compat-ro feature flag for FREE_SPACE_TREE_VALID (0x2) [ 80.903513][ T5040] FAULT_INJECTION: forcing a failure. [ 80.903513][ T5040] name failslab, interval 1, probability 0, space 0, times 0 [ 80.905475][ T5040] CPU: 0 PID: 5040 Comm: syz.0.20 Tainted: G W syzkaller #0 [ 80.906997][ T5040] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/18/2026 [ 80.908659][ T5040] Call trace: [ 80.909201][ T5040] dump_backtrace+0x0/0x458 [ 80.909976][ T5040] show_stack+0x2c/0x3c [ 80.910650][ T5040] __dump_stack+0x30/0x40 [ 80.911343][ T5040] dump_stack_lvl+0xf4/0x15c [ 80.912068][ T5040] dump_stack+0x1c/0x5c [ 80.912718][ T5040] should_fail+0x3bc/0x514 [ 80.913481][ T5040] __should_failslab+0xbc/0x10c [ 80.914329][ T5040] should_failslab+0x10/0x28 [ 80.915116][ T5040] slab_pre_alloc_hook+0x64/0xe8 [ 80.915963][ T5040] kmem_cache_alloc+0x94/0x3d4 [ 80.916752][ T5040] btrfs_get_or_create_delayed_node+0x114/0x4a8 [ 80.917871][ T5040] btrfs_delayed_update_inode+0x3c/0x1b68 [ 80.918825][ T5040] btrfs_update_inode+0x210/0x3d4 [ 80.919693][ T5040] btrfs_create+0x364/0x514 [ 80.920472][ T5040] path_openat+0xe18/0x2718 [ 80.921201][ T5040] do_filp_open+0x184/0x368 [ 80.921955][ T5040] do_sys_openat2+0x134/0x3f4 [ 80.922750][ T5040] __arm64_sys_openat+0x118/0x14c [ 80.923638][ T5040] invoke_syscall+0x98/0x2b0 [ 80.924361][ T5040] el0_svc_common+0x138/0x258 [ 80.925155][ T5040] do_el0_svc+0x58/0x13c [ 80.925816][ T5040] el0_svc+0x78/0x1d0 [ 80.926488][ T5040] el0t_64_sync_handler+0xcc/0xe4 [ 80.927314][ T5040] el0t_64_sync+0x1a0/0x1a4 [ 81.140080][ T5063] loop0: detected capacity change from 0 to 32768 [ 81.186964][ T5063] BTRFS: device fsid ed167579-eb65-4e76-9a50-61ac97e9b59d devid 1 transid 8 /dev/loop0 scanned by syz.0.21 (5063) [ 81.190166][ T5063] BTRFS info (device loop0): using sha256 (sha256-ce) checksum algorithm [ 81.191669][ T5063] BTRFS info (device loop0): setting nodatacow, compression disabled [ 81.194338][ T5063] BTRFS info (device loop0): setting datacow [ 81.195370][ T5063] BTRFS info (device loop0): doing ref verification [ 81.196501][ T5063] BTRFS info (device loop0): force clearing of disk cache [ 81.198020][ T5063] BTRFS info (device loop0): turning off barriers [ 81.198993][ T5063] BTRFS info (device loop0): use zlib compression, level 3 [ 81.212851][ T5063] FAULT_INJECTION: forcing a failure. [ 81.212851][ T5063] name failslab, interval 1, probability 0, space 0, times 0 [ 81.215009][ T5063] CPU: 0 PID: 5063 Comm: syz.0.21 Tainted: G W syzkaller #0 [ 81.216437][ T5063] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/18/2026 [ 81.218196][ T5063] Call trace: [ 81.218713][ T5063] dump_backtrace+0x0/0x458 [ 81.219501][ T5063] show_stack+0x2c/0x3c [ 81.220239][ T5063] __dump_stack+0x30/0x40 [ 81.221037][ T5063] dump_stack_lvl+0xf4/0x15c [ 81.221837][ T5063] dump_stack+0x1c/0x5c [ 81.222584][ T5063] should_fail+0x3bc/0x514 [ 81.223318][ T5063] __should_failslab+0xbc/0x10c [ 81.224103][ T5063] should_failslab+0x10/0x28 [ 81.224953][ T5063] slab_pre_alloc_hook+0x64/0xe8 [ 81.225732][ T5063] kmem_cache_alloc+0x94/0x3d4 [ 81.226570][ T5063] btrfs_alloc_path+0x5c/0x68 [ 81.227365][ T5063] btrfs_insert_dir_item+0x184/0x3e8 [ 81.228283][ T5063] btrfs_add_link+0x2b0/0xa9c [ 81.229101][ T5063] btrfs_create+0x468/0x514 [ 81.229852][ T5063] path_openat+0xe18/0x2718 [ 81.230607][ T5063] do_filp_open+0x184/0x368 [ 81.231321][ T5063] do_sys_openat2+0x134/0x3f4 [ 81.232093][ T5063] __arm64_sys_openat+0x118/0x14c [ 81.232933][ T5063] invoke_syscall+0x98/0x2b0 [ 81.233705][ T5063] el0_svc_common+0x138/0x258 [ 81.234448][ T5063] do_el0_svc+0x58/0x13c [ 81.235115][ T5063] el0_svc+0x78/0x1d0 [ 81.235784][ T5063] el0t_64_sync_handler+0xcc/0xe4 [ 81.236619][ T5063] el0t_64_sync+0x1a0/0x1a4 [ 81.242691][ T5063] ------------[ cut here ]------------ [ 81.243793][ T5063] WARNING: CPU: 0 PID: 5063 at fs/btrfs/inode.c:6776 btrfs_add_link+0x718/0xa9c [ 81.245196][ T5063] Modules linked in: [ 81.245827][ T5063] CPU: 0 PID: 5063 Comm: syz.0.21 Tainted: G W syzkaller #0 [ 81.247257][ T5063] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/18/2026 [ 81.248849][ T5063] pstate: 62400005 (nZCv daif +PAN -UAO +TCO -DIT -SSBS BTYPE=--) [ 81.250192][ T5063] pc : btrfs_add_link+0x718/0xa9c [ 81.251047][ T5063] lr : btrfs_add_link+0x718/0xa9c [ 81.251859][ T5063] sp : ffff8000202c7580 [ 81.252575][ T5063] x29: ffff8000202c7680 x28: ffff0000dedc1d10 x27: 0000000000000108 [ 81.253925][ T5063] x26: 00000000fffffff4 x25: 0000000000000000 x24: dfff800000000000 [ 81.255272][ T5063] x23: 0000000000000014 x22: 1fffe0001bdb83ad x21: ffff700004058eb8 [ 81.256630][ T5063] x20: 00000000fffffff4 x19: ffff0000dedc1d68 x18: 0000000000000001 [ 81.258044][ T5063] x17: 0000000000000000 x16: ffff80001125f77c x15: 00000000ffffffff [ 81.259376][ T5063] x14: 0000000000000001 x13: 1fffe000341f05ab x12: 0000000000ff0100 [ 81.260773][ T5063] x11: 0000000000000000 x10: 0000000000000000 x9 : a78cf328ff7c6900 [ 81.262170][ T5063] x8 : a78cf328ff7c6900 x7 : 0000000000000001 x6 : 0000000000000001 [ 81.263572][ T5063] x5 : ffff8000202c6e98 x4 : ffff80001437f3e0 x3 : ffff80000850932c [ 81.264964][ T5063] x2 : 0000000000000001 x1 : 0000000100000000 x0 : 0000000000000026 [ 81.266317][ T5063] Call trace: [ 81.266854][ T5063] btrfs_add_link+0x718/0xa9c [ 81.267583][ T5063] btrfs_create+0x468/0x514 [ 81.268290][ T5063] path_openat+0xe18/0x2718 [ 81.269055][ T5063] do_filp_open+0x184/0x368 [ 81.269797][ T5063] do_sys_openat2+0x134/0x3f4 [ 81.270601][ T5063] __arm64_sys_openat+0x118/0x14c [ 81.271434][ T5063] invoke_syscall+0x98/0x2b0 [ 81.272259][ T5063] el0_svc_common+0x138/0x258 [ 81.273044][ T5063] do_el0_svc+0x58/0x13c [ 81.273751][ T5063] el0_svc+0x78/0x1d0 [ 81.274365][ T5063] el0t_64_sync_handler+0xcc/0xe4 [ 81.275236][ T5063] el0t_64_sync+0x1a0/0x1a4 [ 81.275981][ T5063] irq event stamp: 80030 [ 81.276709][ T5063] hardirqs last enabled at (80029): [] __up_console_sem+0xb4/0xfc [ 81.278371][ T5063] hardirqs last disabled at (80030): [] el1_dbg+0x24/0x80 [ 81.279809][ T5063] softirqs last enabled at (80006): [] handle_softirqs+0xa40/0xbe4 [ 81.281345][ T5063] softirqs last disabled at (79955): [] __irq_exit_rcu+0x240/0x43c [ 81.282955][ T5063] ---[ end trace 11760cd20ce9d7e3 ]--- [ 81.284927][ T5063] BTRFS: error (device loop0) in btrfs_add_link:6776: errno=-12 Out of memory [ 81.461155][ T5085] loop0: detected capacity change from 0 to 32768 [ 81.514603][ T5085] BTRFS: device fsid ed167579-eb65-4e76-9a50-61ac97e9b59d devid 1 transid 8 /dev/loop0 scanned by syz.0.22 (5085) [ 81.554966][ T5085] FAULT_INJECTION: forcing a failure. [ 81.554966][ T5085] name failslab, interval 1, probability 0, space 0, times 0 [ 81.557013][ T5085] CPU: 0 PID: 5085 Comm: syz.0.22 Tainted: G W syzkaller #0 [ 81.558412][ T5085] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/18/2026 [ 81.559995][ T5085] Call trace: [ 81.560515][ T5085] dump_backtrace+0x0/0x458 [ 81.561270][ T5085] show_stack+0x2c/0x3c [ 81.561968][ T5085] __dump_stack+0x30/0x40 [ 81.562714][ T5085] dump_stack_lvl+0xf4/0x15c [ 81.563476][ T5085] dump_stack+0x1c/0x5c [ 81.564144][ T5085] should_fail+0x3bc/0x514 [ 81.564845][ T5085] __should_failslab+0xbc/0x10c [ 81.565660][ T5085] should_failslab+0x10/0x28 [ 81.566440][ T5085] slab_pre_alloc_hook+0x64/0xe8 [ 81.567256][ T5085] kmem_cache_alloc+0x94/0x3d4 [ 81.568070][ T5085] btrfs_get_or_create_delayed_node+0x114/0x4a8 [ 81.569147][ T5085] btrfs_delayed_update_inode+0x3c/0x1b68 [ 81.570109][ T5085] btrfs_update_inode+0x210/0x3d4 [ 81.570955][ T5085] btrfs_create+0x364/0x514 [ 81.571741][ T5085] path_openat+0xe18/0x2718 [ 81.572454][ T5085] do_filp_open+0x184/0x368 [ 81.573158][ T5085] do_sys_openat2+0x134/0x3f4 [ 81.573922][ T5085] __arm64_sys_openat+0x118/0x14c [ 81.574746][ T5085] invoke_syscall+0x98/0x2b0 [ 81.575487][ T5085] el0_svc_common+0x138/0x258 [ 81.576275][ T5085] do_el0_svc+0x58/0x13c [ 81.576979][ T5085] el0_svc+0x78/0x1d0 [ 81.577658][ T5085] el0t_64_sync_handler+0xcc/0xe4 [ 81.578502][ T5085] el0t_64_sync+0x1a0/0x1a4 [ 81.721287][ T5107] loop0: detected capacity change from 0 to 32768 [ 81.725450][ T5107] BTRFS: device fsid ed167579-eb65-4e76-9a50-61ac97e9b59d devid 1 transid 8 /dev/loop0 scanned by syz.0.23 (5107) [ 81.743406][ T5107] FAULT_INJECTION: forcing a failure. [ 81.743406][ T5107] name failslab, interval 1, probability 0, space 0, times 0 [ 81.745388][ T5107] CPU: 1 PID: 5107 Comm: syz.0.23 Tainted: G W syzkaller #0 [ 81.746793][ T5107] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/18/2026 [ 81.748479][ T5107] Call trace: [ 81.749027][ T5107] dump_backtrace+0x0/0x458 [ 81.749778][ T5107] show_stack+0x2c/0x3c [ 81.750458][ T5107] __dump_stack+0x30/0x40 [ 81.751236][ T5107] dump_stack_lvl+0xf4/0x15c [ 81.751981][ T5107] dump_stack+0x1c/0x5c [ 81.752709][ T5107] should_fail+0x3bc/0x514 [ 81.753445][ T5107] __should_failslab+0xbc/0x10c [ 81.754262][ T5107] should_failslab+0x10/0x28 [ 81.754968][ T5107] slab_pre_alloc_hook+0x64/0xe8 [ 81.755851][ T5107] kmem_cache_alloc+0x94/0x3d4 [ 81.756636][ T5107] btrfs_get_or_create_delayed_node+0x114/0x4a8 [ 81.757647][ T5107] btrfs_delayed_update_inode+0x3c/0x1b68 [ 81.758619][ T5107] btrfs_update_inode+0x210/0x3d4 [ 81.759437][ T5107] btrfs_create+0x364/0x514 [ 81.760176][ T5107] path_openat+0xe18/0x2718 [ 81.760917][ T5107] do_filp_open+0x184/0x368 [ 81.761678][ T5107] do_sys_openat2+0x134/0x3f4 [ 81.762435][ T5107] __arm64_sys_openat+0x118/0x14c [ 81.763256][ T5107] invoke_syscall+0x98/0x2b0 [ 81.764018][ T5107] el0_svc_common+0x138/0x258 [ 81.764758][ T5107] do_el0_svc+0x58/0x13c [ 81.765477][ T5107] el0_svc+0x78/0x1d0 [ 81.766110][ T5107] el0t_64_sync_handler+0xcc/0xe4 [ 81.767014][ T5107] el0t_64_sync+0x1a0/0x1a4 [ 81.824332][ T4930] BTRFS: device fsid ed167579-eb65-4e76-9a50-61ac97e9b59d devid 1 transid 12 /dev/loop0 scanned by udevd (4930) [ 81.910093][ T5128] loop0: detected capacity change from 0 to 32768 [ 81.978312][ T5128] FAULT_INJECTION: forcing a failure. [ 81.978312][ T5128] name failslab, interval 1, probability 0, space 0, times 0 [ 81.980457][ T5128] CPU: 1 PID: 5128 Comm: syz.0.24 Tainted: G W syzkaller #0 [ 81.981837][ T5128] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/18/2026 [ 81.983524][ T5128] Call trace: [ 81.984088][ T5128] dump_backtrace+0x0/0x458 [ 81.984843][ T5128] show_stack+0x2c/0x3c [ 81.985508][ T5128] __dump_stack+0x30/0x40 [ 81.986270][ T5128] dump_stack_lvl+0xf4/0x15c [ 81.987035][ T5128] dump_stack+0x1c/0x5c [ 81.987708][ T5128] should_fail+0x3bc/0x514 [ 81.988418][ T5128] __should_failslab+0xbc/0x10c [ 81.989235][ T5128] should_failslab+0x10/0x28 [ 81.990005][ T5128] slab_pre_alloc_hook+0x64/0xe8 [ 81.990817][ T5128] kmem_cache_alloc+0x94/0x3d4 [ 81.991571][ T5128] btrfs_get_or_create_delayed_node+0x114/0x4a8 [ 81.992600][ T5128] btrfs_delayed_update_inode+0x3c/0x1b68 [ 81.993558][ T5128] btrfs_update_inode+0x210/0x3d4 [ 81.994438][ T5128] btrfs_create+0x364/0x514 [ 81.995205][ T5128] path_openat+0xe18/0x2718 [ 81.995955][ T5128] do_filp_open+0x184/0x368 [ 81.996683][ T5128] do_sys_openat2+0x134/0x3f4 [ 81.997495][ T5128] __arm64_sys_openat+0x118/0x14c [ 81.998322][ T5128] invoke_syscall+0x98/0x2b0 [ 81.999129][ T5128] el0_svc_common+0x138/0x258 [ 81.999914][ T5128] do_el0_svc+0x58/0x13c [ 82.000645][ T5128] el0_svc+0x78/0x1d0 [ 82.001279][ T5128] el0t_64_sync_handler+0xcc/0xe4 [ 82.002127][ T5128] el0t_64_sync+0x1a0/0x1a4 [ 82.167042][ T5150] BTRFS: device fsid ed167579-eb65-4e76-9a50-61ac97e9b59d devid 1 transid 8 /dev/loop0 scanned by syz.0.25 (5150) [ 82.182912][ T5150] FAULT_INJECTION: forcing a failure. [ 82.182912][ T5150] name failslab, interval 1, probability 0, space 0, times 0 [ 82.185038][ T5150] CPU: 1 PID: 5150 Comm: syz.0.25 Tainted: G W syzkaller #0 [ 82.186512][ T5150] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/18/2026 [ 82.188169][ T5150] Call trace: [ 82.188738][ T5150] dump_backtrace+0x0/0x458 [ 82.189492][ T5150] show_stack+0x2c/0x3c [ 82.190209][ T5150] __dump_stack+0x30/0x40 [ 82.190897][ T5150] dump_stack_lvl+0xf4/0x15c [ 82.191661][ T5150] dump_stack+0x1c/0x5c [ 82.192303][ T5150] should_fail+0x3bc/0x514 [ 82.193006][ T5150] __should_failslab+0xbc/0x10c [ 82.193775][ T5150] should_failslab+0x10/0x28 [ 82.194488][ T5150] slab_pre_alloc_hook+0x64/0xe8 [ 82.195307][ T5150] kmem_cache_alloc+0x94/0x3d4 [ 82.196084][ T5150] btrfs_alloc_path+0x5c/0x68 [ 82.196796][ T5150] btrfs_insert_dir_item+0x184/0x3e8 [ 82.197667][ T5150] btrfs_add_link+0x2b0/0xa9c [ 82.198471][ T5150] btrfs_create+0x468/0x514 [ 82.199450][ T5150] path_openat+0xe18/0x2718 [ 82.200181][ T5150] do_filp_open+0x184/0x368 [ 82.200923][ T5150] do_sys_openat2+0x134/0x3f4 [ 82.201686][ T5150] __arm64_sys_openat+0x118/0x14c [ 82.202497][ T5150] invoke_syscall+0x98/0x2b0 [ 82.203242][ T5150] el0_svc_common+0x138/0x258 [ 82.204017][ T5150] do_el0_svc+0x58/0x13c [ 82.204724][ T5150] el0_svc+0x78/0x1d0 [ 82.205368][ T5150] el0t_64_sync_handler+0xcc/0xe4 [ 82.206214][ T5150] el0t_64_sync+0x1a0/0x1a4 [ 82.208627][ T5150] ------------[ cut here ]------------ [ 82.209617][ T5150] WARNING: CPU: 1 PID: 5150 at fs/btrfs/inode.c:6776 btrfs_add_link+0x718/0xa9c [ 82.210993][ T5150] Modules linked in: [ 82.211680][ T5150] CPU: 1 PID: 5150 Comm: syz.0.25 Tainted: G W syzkaller #0 [ 82.213178][ T5150] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/18/2026 [ 82.214846][ T5150] pstate: 62400005 (nZCv daif +PAN -UAO +TCO -DIT -SSBS BTYPE=--) [ 82.216206][ T5150] pc : btrfs_add_link+0x718/0xa9c [ 82.217084][ T5150] lr : btrfs_add_link+0x718/0xa9c [ 82.217927][ T5150] sp : ffff8000207f7580 [ 82.218575][ T5150] x29: ffff8000207f7680 x28: ffff0000c066d840 x27: 0000000000000108 [ 82.219928][ T5150] x26: 00000000fffffff4 x25: 0000000000000000 x24: dfff800000000000 [ 82.221279][ T5150] x23: 0000000000000014 x22: 1fffe000180cdb13 x21: ffff7000040feeb8 [ 82.222565][ T5150] x20: 00000000fffffff4 x19: ffff0000c066d898 x18: 0000000000000001 [ 82.223895][ T5150] x17: 0000000000000000 x16: ffff80001125f77c x15: 00000000ffffffff [ 82.225205][ T5150] x14: 0000000000000001 x13: 1fffe000341f47ab x12: 0000000000ff0100 [ 82.226509][ T5150] x11: 0000000000000000 x10: 0000000000000000 x9 : 74e7c6280e087100 [ 82.227806][ T5150] x8 : 74e7c6280e087100 x7 : 0000000000000001 x6 : 0000000000000001 [ 82.229189][ T5150] x5 : ffff8000207f6e98 x4 : ffff80001437f3e0 x3 : ffff80000850932c [ 82.230626][ T5150] x2 : 0000000000000001 x1 : 0000000100000000 x0 : 0000000000000026 [ 82.232008][ T5150] Call trace: [ 82.232546][ T5150] btrfs_add_link+0x718/0xa9c [ 82.233375][ T5150] btrfs_create+0x468/0x514 [ 82.234121][ T5150] path_openat+0xe18/0x2718 [ 82.234860][ T5150] do_filp_open+0x184/0x368 [ 82.235559][ T5150] do_sys_openat2+0x134/0x3f4 [ 82.236350][ T5150] __arm64_sys_openat+0x118/0x14c [ 82.237208][ T5150] invoke_syscall+0x98/0x2b0 [ 82.237992][ T5150] el0_svc_common+0x138/0x258 [ 82.238781][ T5150] do_el0_svc+0x58/0x13c [ 82.239427][ T5150] el0_svc+0x78/0x1d0 [ 82.240043][ T5150] el0t_64_sync_handler+0xcc/0xe4 [ 82.240839][ T5150] el0t_64_sync+0x1a0/0x1a4 [ 82.241572][ T5150] irq event stamp: 80208 [ 82.242252][ T5150] hardirqs last enabled at (80207): [] __up_console_sem+0xb4/0xfc [ 82.243802][ T5150] hardirqs last disabled at (80208): [] el1_dbg+0x24/0x80 [ 82.245236][ T5150] softirqs last enabled at (80188): [] handle_softirqs+0xa40/0xbe4 [ 82.246851][ T5150] softirqs last disabled at (80155): [] __irq_exit_rcu+0x240/0x43c [ 82.248417][ T5150] ---[ end trace 11760cd20ce9d7e4 ]--- [ 82.251398][ T5150] BTRFS: error (device loop0) in btrfs_add_link:6776: errno=-12 Out of memory [ 82.444179][ T5172] BTRFS: device fsid ed167579-eb65-4e76-9a50-61ac97e9b59d devid 1 transid 8 /dev/loop0 scanned by syz.0.26 (5172) [ 82.461902][ T5172] FAULT_INJECTION: forcing a failure. [ 82.461902][ T5172] name failslab, interval 1, probability 0, space 0, times 0 [ 82.463885][ T5172] CPU: 1 PID: 5172 Comm: syz.0.26 Tainted: G W syzkaller #0 [ 82.465239][ T5172] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/18/2026 [ 82.466816][ T5172] Call trace: [ 82.467344][ T5172] dump_backtrace+0x0/0x458 [ 82.468014][ T5172] show_stack+0x2c/0x3c [ 82.468687][ T5172] __dump_stack+0x30/0x40 [ 82.469385][ T5172] dump_stack_lvl+0xf4/0x15c [ 82.470094][ T5172] dump_stack+0x1c/0x5c [ 82.470785][ T5172] should_fail+0x3bc/0x514 [ 82.471503][ T5172] __should_failslab+0xbc/0x10c [ 82.472302][ T5172] should_failslab+0x10/0x28 [ 82.473034][ T5172] slab_pre_alloc_hook+0x64/0xe8 [ 82.473831][ T5172] kmem_cache_alloc+0x94/0x3d4 [ 82.474602][ T5172] btrfs_alloc_path+0x5c/0x68 [ 82.475353][ T5172] btrfs_insert_dir_item+0x184/0x3e8 [ 82.476254][ T5172] btrfs_add_link+0x2b0/0xa9c [ 82.477052][ T5172] btrfs_create+0x468/0x514 [ 82.477806][ T5172] path_openat+0xe18/0x2718 [ 82.478551][ T5172] do_filp_open+0x184/0x368 [ 82.479293][ T5172] do_sys_openat2+0x134/0x3f4 [ 82.480054][ T5172] __arm64_sys_openat+0x118/0x14c [ 82.480825][ T5172] invoke_syscall+0x98/0x2b0 [ 82.481596][ T5172] el0_svc_common+0x138/0x258 [ 82.482398][ T5172] do_el0_svc+0x58/0x13c [ 82.483101][ T5172] el0_svc+0x78/0x1d0 [ 82.483763][ T5172] el0t_64_sync_handler+0xcc/0xe4 [ 82.484595][ T5172] el0t_64_sync+0x1a0/0x1a4 [ 82.486786][ T5172] ------------[ cut here ]------------ [ 82.487705][ T5172] WARNING: CPU: 1 PID: 5172 at fs/btrfs/inode.c:6776 btrfs_add_link+0x718/0xa9c [ 82.489135][ T5172] Modules linked in: [ 82.489764][ T5172] CPU: 1 PID: 5172 Comm: syz.0.26 Tainted: G W syzkaller #0 [ 82.491222][ T5172] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/18/2026 [ 82.492952][ T5172] pstate: 62400005 (nZCv daif +PAN -UAO +TCO -DIT -SSBS BTYPE=--) [ 82.494255][ T5172] pc : btrfs_add_link+0x718/0xa9c [ 82.495100][ T5172] lr : btrfs_add_link+0x718/0xa9c [ 82.495956][ T5172] sp : ffff8000202c7580 [ 82.496600][ T5172] x29: ffff8000202c7680 x28: ffff0000c066db00 x27: 0000000000000108 [ 82.497907][ T5172] x26: 00000000fffffff4 x25: 0000000000000000 x24: dfff800000000000 [ 82.499176][ T5172] x23: 0000000000000014 x22: 1fffe000180cdb6b x21: ffff700004058eb8 [ 82.500507][ T5172] x20: 00000000fffffff4 x19: ffff0000c066db58 x18: 0000000000000001 [ 82.501869][ T5172] x17: 0000000000000000 x16: ffff80001125f77c x15: 00000000ffffffff [ 82.503097][ T5172] x14: 0000000000000001 x13: 1fffe000341f47ab x12: 0000000000ff0100 [ 82.504379][ T5172] x11: 0000000000000000 x10: 0000000000000000 x9 : 90f17094b1276800 [ 82.505713][ T5172] x8 : 90f17094b1276800 x7 : 0000000000000001 x6 : 0000000000000001 [ 82.506986][ T5172] x5 : ffff8000202c6e98 x4 : ffff80001437f3e0 x3 : ffff80000850932c [ 82.508343][ T5172] x2 : 0000000000000001 x1 : 0000000100000000 x0 : 0000000000000026 [ 82.509677][ T5172] Call trace: [ 82.510219][ T5172] btrfs_add_link+0x718/0xa9c [ 82.510958][ T5172] btrfs_create+0x468/0x514 [ 82.511664][ T5172] path_openat+0xe18/0x2718 [ 82.512418][ T5172] do_filp_open+0x184/0x368 [ 82.513182][ T5172] do_sys_openat2+0x134/0x3f4 [ 82.513955][ T5172] __arm64_sys_openat+0x118/0x14c [ 82.514801][ T5172] invoke_syscall+0x98/0x2b0 [ 82.515582][ T5172] el0_svc_common+0x138/0x258 [ 82.516317][ T5172] do_el0_svc+0x58/0x13c [ 82.516979][ T5172] el0_svc+0x78/0x1d0 [ 82.517671][ T5172] el0t_64_sync_handler+0xcc/0xe4 [ 82.518502][ T5172] el0t_64_sync+0x1a0/0x1a4 [ 82.519244][ T5172] irq event stamp: 79772 [ 82.519901][ T5172] hardirqs last enabled at (79771): [] __up_console_sem+0xb4/0xfc [ 82.521434][ T5172] hardirqs last disabled at (79772): [] el1_dbg+0x24/0x80 [ 82.522750][ T5172] softirqs last enabled at (79752): [] handle_softirqs+0xa40/0xbe4 [ 82.524349][ T5172] softirqs last disabled at (79735): [] __irq_exit_rcu+0x240/0x43c [ 82.525970][ T5172] ---[ end trace 11760cd20ce9d7e5 ]--- [ 82.529051][ T5172] BTRFS: error (device loop0) in btrfs_add_link:6776: errno=-12 Out of memory [ 82.776654][ T5194] BTRFS: device fsid ed167579-eb65-4e76-9a50-61ac97e9b59d devid 1 transid 8 /dev/loop0 scanned by syz.0.27 (5194) [ 82.797352][ T5194] FAULT_INJECTION: forcing a failure. [ 82.797352][ T5194] name failslab, interval 1, probability 0, space 0, times 0 [ 82.799348][ T5194] CPU: 1 PID: 5194 Comm: syz.0.27 Tainted: G W syzkaller #0 [ 82.800676][ T5194] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/18/2026 [ 82.802367][ T5194] Call trace: [ 82.802915][ T5194] dump_backtrace+0x0/0x458 [ 82.803704][ T5194] show_stack+0x2c/0x3c [ 82.804452][ T5194] __dump_stack+0x30/0x40 [ 82.805203][ T5194] dump_stack_lvl+0xf4/0x15c [ 82.805986][ T5194] dump_stack+0x1c/0x5c [ 82.806726][ T5194] should_fail+0x3bc/0x514 [ 82.807486][ T5194] __should_failslab+0xbc/0x10c [ 82.808278][ T5194] should_failslab+0x10/0x28 [ 82.808986][ T5194] slab_pre_alloc_hook+0x64/0xe8 [ 82.809826][ T5194] kmem_cache_alloc+0x94/0x3d4 [ 82.810567][ T5194] btrfs_alloc_path+0x5c/0x68 [ 82.811337][ T5194] btrfs_insert_dir_item+0x184/0x3e8 [ 82.812222][ T5194] btrfs_add_link+0x2b0/0xa9c [ 82.813010][ T5194] btrfs_create+0x468/0x514 [ 82.813774][ T5194] path_openat+0xe18/0x2718 [ 82.814555][ T5194] do_filp_open+0x184/0x368 [ 82.815285][ T5194] do_sys_openat2+0x134/0x3f4 [ 82.816051][ T5194] __arm64_sys_openat+0x118/0x14c [ 82.816874][ T5194] invoke_syscall+0x98/0x2b0 [ 82.817601][ T5194] el0_svc_common+0x138/0x258 [ 82.818368][ T5194] do_el0_svc+0x58/0x13c [ 82.819022][ T5194] el0_svc+0x78/0x1d0 [ 82.819681][ T5194] el0t_64_sync_handler+0xcc/0xe4 [ 82.820524][ T5194] el0t_64_sync+0x1a0/0x1a4 [ 82.822809][ T5194] ------------[ cut here ]------------ [ 82.823790][ T5194] WARNING: CPU: 1 PID: 5194 at fs/btrfs/inode.c:6776 btrfs_add_link+0x718/0xa9c [ 82.825158][ T5194] Modules linked in: [ 82.825798][ T5194] CPU: 1 PID: 5194 Comm: syz.0.27 Tainted: G W syzkaller #0 [ 82.827209][ T5194] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/18/2026 [ 82.828908][ T5194] pstate: 62400005 (nZCv daif +PAN -UAO +TCO -DIT -SSBS BTYPE=--) [ 82.830271][ T5194] pc : btrfs_add_link+0x718/0xa9c [ 82.831095][ T5194] lr : btrfs_add_link+0x718/0xa9c [ 82.831916][ T5194] sp : ffff8000202c7580 [ 82.832597][ T5194] x29: ffff8000202c7680 x28: ffff0000c066ddc0 x27: 0000000000000108 [ 82.833912][ T5194] x26: 00000000fffffff4 x25: 0000000000000000 x24: dfff800000000000 [ 82.835243][ T5194] x23: 0000000000000014 x22: 1fffe000180cdbc3 x21: ffff700004058eb8 [ 82.836556][ T5194] x20: 00000000fffffff4 x19: ffff0000c066de18 x18: 0000000000000001 [ 82.837876][ T5194] x17: 0000000000000000 x16: ffff80001125f77c x15: 00000000ffffffff [ 82.839203][ T5194] x14: 0000000000000001 x13: 1fffe000341f47ab x12: 0000000000ff0100 [ 82.840524][ T5194] x11: 0000000000000000 x10: 0000000000000000 x9 : cb1b630556b2f300 [ 82.841837][ T5194] x8 : cb1b630556b2f300 x7 : 0000000000000001 x6 : 0000000000000001 [ 82.843155][ T5194] x5 : ffff8000202c6e98 x4 : ffff80001437f3e0 x3 : ffff80000850932c [ 82.844553][ T5194] x2 : 0000000000000001 x1 : 0000000100000000 x0 : 0000000000000026 [ 82.845867][ T5194] Call trace: [ 82.846350][ T5194] btrfs_add_link+0x718/0xa9c [ 82.847084][ T5194] btrfs_create+0x468/0x514 [ 82.847853][ T5194] path_openat+0xe18/0x2718 [ 82.848584][ T5194] do_filp_open+0x184/0x368 [ 82.849276][ T5194] do_sys_openat2+0x134/0x3f4 [ 82.850079][ T5194] __arm64_sys_openat+0x118/0x14c [ 82.850874][ T5194] invoke_syscall+0x98/0x2b0 [ 82.851584][ T5194] el0_svc_common+0x138/0x258 [ 82.852391][ T5194] do_el0_svc+0x58/0x13c [ 82.853127][ T5194] el0_svc+0x78/0x1d0 [ 82.853804][ T5194] el0t_64_sync_handler+0xcc/0xe4 [ 82.854673][ T5194] el0t_64_sync+0x1a0/0x1a4 [ 82.855396][ T5194] irq event stamp: 80814 [ 82.856077][ T5194] hardirqs last enabled at (80813): [] __up_console_sem+0xb4/0xfc [ 82.857724][ T5194] hardirqs last disabled at (80814): [] el1_dbg+0x24/0x80 [ 82.859224][ T5194] softirqs last enabled at (80794): [] handle_softirqs+0xa40/0xbe4 [ 82.860819][ T5194] softirqs last disabled at (80759): [] __irq_exit_rcu+0x240/0x43c [ 82.862331][ T5194] ---[ end trace 11760cd20ce9d7e6 ]--- [ 82.865792][ T5194] BTRFS: error (device loop0) in btrfs_add_link:6776: errno=-12 Out of memory [ 83.033948][ T5217] BTRFS: device fsid ed167579-eb65-4e76-9a50-61ac97e9b59d devid 1 transid 8 /dev/loop0 scanned by syz.0.28 (5217) [ 83.058916][ T5217] FAULT_INJECTION: forcing a failure. [ 83.058916][ T5217] name failslab, interval 1, probability 0, space 0, times 0 [ 83.060888][ T5217] CPU: 1 PID: 5217 Comm: syz.0.28 Tainted: G W syzkaller #0 [ 83.062252][ T5217] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/18/2026 [ 83.064001][ T5217] Call trace: [ 83.064544][ T5217] dump_backtrace+0x0/0x458 [ 83.065302][ T5217] show_stack+0x2c/0x3c [ 83.065995][ T5217] __dump_stack+0x30/0x40 [ 83.066703][ T5217] dump_stack_lvl+0xf4/0x15c [ 83.067408][ T5217] dump_stack+0x1c/0x5c [ 83.068049][ T5217] should_fail+0x3bc/0x514 [ 83.068729][ T5217] __should_failslab+0xbc/0x10c [ 83.069503][ T5217] should_failslab+0x10/0x28 [ 83.070161][ T5217] slab_pre_alloc_hook+0x64/0xe8 [ 83.070953][ T5217] kmem_cache_alloc+0x94/0x3d4 [ 83.071720][ T5217] btrfs_get_or_create_delayed_node+0x114/0x4a8 [ 83.072690][ T5217] btrfs_delayed_update_inode+0x3c/0x1b68 [ 83.073594][ T5217] btrfs_update_inode+0x210/0x3d4 [ 83.074420][ T5217] btrfs_create+0x364/0x514 [ 83.075181][ T5217] path_openat+0xe18/0x2718 [ 83.075940][ T5217] do_filp_open+0x184/0x368 [ 83.076695][ T5217] do_sys_openat2+0x134/0x3f4 [ 83.077499][ T5217] __arm64_sys_openat+0x118/0x14c [ 83.078326][ T5217] invoke_syscall+0x98/0x2b0 [ 83.079102][ T5217] el0_svc_common+0x138/0x258 [ 83.079892][ T5217] do_el0_svc+0x58/0x13c [ 83.080626][ T5217] el0_svc+0x78/0x1d0 [ 83.081275][ T5217] el0t_64_sync_handler+0xcc/0xe4 [ 83.082113][ T5217] el0t_64_sync+0x1a0/0x1a4 [ 83.133626][ T4930] BTRFS: device fsid ed167579-eb65-4e76-9a50-61ac97e9b59d devid 1 transid 12 /dev/loop0 scanned by udevd (4930) [ 83.332089][ T5238] FAULT_INJECTION: forcing a failure. [ 83.332089][ T5238] name failslab, interval 1, probability 0, space 0, times 0 [ 83.334218][ T5238] CPU: 1 PID: 5238 Comm: syz.0.29 Tainted: G W syzkaller #0 [ 83.335735][ T5238] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/18/2026 [ 83.337466][ T5238] Call trace: [ 83.338025][ T5238] dump_backtrace+0x0/0x458 [ 83.338812][ T5238] show_stack+0x2c/0x3c [ 83.339516][ T5238] __dump_stack+0x30/0x40 [ 83.340285][ T5238] dump_stack_lvl+0xf4/0x15c [ 83.341068][ T5238] dump_stack+0x1c/0x5c [ 83.341797][ T5238] should_fail+0x3bc/0x514 [ 83.342506][ T5238] __should_failslab+0xbc/0x10c [ 83.343300][ T5238] should_failslab+0x10/0x28 [ 83.344022][ T5238] slab_pre_alloc_hook+0x64/0xe8 [ 83.344794][ T5238] kmem_cache_alloc+0x94/0x3d4 [ 83.345539][ T5238] btrfs_alloc_path+0x5c/0x68 [ 83.346258][ T5238] btrfs_insert_dir_item+0x184/0x3e8 [ 83.347115][ T5238] btrfs_add_link+0x2b0/0xa9c [ 83.347866][ T5238] btrfs_create+0x468/0x514 [ 83.348581][ T5238] path_openat+0xe18/0x2718 [ 83.349332][ T5238] do_filp_open+0x184/0x368 [ 83.350054][ T5238] do_sys_openat2+0x134/0x3f4 [ 83.350855][ T5238] __arm64_sys_openat+0x118/0x14c [ 83.351736][ T5238] invoke_syscall+0x98/0x2b0 [ 83.352485][ T5238] el0_svc_common+0x138/0x258 [ 83.353284][ T5238] do_el0_svc+0x58/0x13c [ 83.353979][ T5238] el0_svc+0x78/0x1d0 [ 83.354603][ T5238] el0t_64_sync_handler+0xcc/0xe4 [ 83.355393][ T5238] el0t_64_sync+0x1a0/0x1a4 [ 83.357734][ T5238] ------------[ cut here ]------------ [ 83.358678][ T5238] WARNING: CPU: 1 PID: 5238 at fs/btrfs/inode.c:6776 btrfs_add_link+0x718/0xa9c [ 83.360091][ T5238] Modules linked in: [ 83.360683][ T5238] CPU: 1 PID: 5238 Comm: syz.0.29 Tainted: G W syzkaller #0 [ 83.362073][ T5238] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/18/2026 [ 83.363707][ T5238] pstate: 62400005 (nZCv daif +PAN -UAO +TCO -DIT -SSBS BTYPE=--) [ 83.365018][ T5238] pc : btrfs_add_link+0x718/0xa9c [ 83.365864][ T5238] lr : btrfs_add_link+0x718/0xa9c [ 83.366680][ T5238] sp : ffff800021317580 [ 83.367372][ T5238] x29: ffff800021317680 x28: ffff0000def82420 x27: 0000000000000108 [ 83.368686][ T5238] x26: 00000000fffffff4 x25: 0000000000000000 x24: dfff800000000000 [ 83.370051][ T5238] x23: 0000000000000014 x22: 1fffe0001bdf048f x21: ffff700004262eb8 [ 83.371445][ T5238] x20: 00000000fffffff4 x19: ffff0000def82478 x18: 0000000000000001 [ 83.372784][ T5238] x17: 0000000000000000 x16: ffff80001125f77c x15: 00000000ffffffff [ 83.374114][ T5238] x14: 0000000000000001 x13: 1fffe000341f47ab x12: 0000000000ff0100 [ 83.375482][ T5238] x11: 0000000000000000 x10: 0000000000000000 x9 : 8fc57663d5fb0e00 [ 83.376863][ T5238] x8 : 8fc57663d5fb0e00 x7 : 0000000000000001 x6 : 0000000000000001 [ 83.378164][ T5238] x5 : ffff800021316e98 x4 : ffff80001437f3e0 x3 : ffff80000850932c [ 83.379491][ T5238] x2 : 0000000000000001 x1 : 0000000100000000 x0 : 0000000000000026 [ 83.380793][ T5238] Call trace: [ 83.381360][ T5238] btrfs_add_link+0x718/0xa9c [ 83.382106][ T5238] btrfs_create+0x468/0x514 [ 83.382822][ T5238] path_openat+0xe18/0x2718 [ 83.383548][ T5238] do_filp_open+0x184/0x368 [ 83.384304][ T5238] do_sys_openat2+0x134/0x3f4 [ 83.385082][ T5238] __arm64_sys_openat+0x118/0x14c [ 83.385899][ T5238] invoke_syscall+0x98/0x2b0 [ 83.386681][ T5238] el0_svc_common+0x138/0x258 [ 83.387434][ T5238] do_el0_svc+0x58/0x13c [ 83.388131][ T5238] el0_svc+0x78/0x1d0 [ 83.388746][ T5238] el0t_64_sync_handler+0xcc/0xe4 [ 83.389564][ T5238] el0t_64_sync+0x1a0/0x1a4 [ 83.390337][ T5238] irq event stamp: 79590 [ 83.391043][ T5238] hardirqs last enabled at (79589): [] __up_console_sem+0xb4/0xfc [ 83.392566][ T5238] hardirqs last disabled at (79590): [] el1_dbg+0x24/0x80 [ 83.393898][ T5238] softirqs last enabled at (79570): [] handle_softirqs+0xa40/0xbe4 [ 83.395451][ T5238] softirqs last disabled at (79555): [] __irq_exit_rcu+0x240/0x43c [ 83.397037][ T5238] ---[ end trace 11760cd20ce9d7e7 ]--- [ 83.400100][ T5238] BTRFS: error (device loop0) in btrfs_add_link:6776: errno=-12 Out of memory [ 83.593850][ T5261] BTRFS: device fsid ed167579-eb65-4e76-9a50-61ac97e9b59d devid 1 transid 8 /dev/loop0 scanned by syz.0.30 (5261) [ 83.609853][ T5261] FAULT_INJECTION: forcing a failure. [ 83.609853][ T5261] name failslab, interval 1, probability 0, space 0, times 0 [ 83.612373][ T5261] CPU: 0 PID: 5261 Comm: syz.0.30 Tainted: G W syzkaller #0 [ 83.613808][ T5261] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/18/2026 [ 83.615424][ T5261] Call trace: [ 83.615914][ T5261] dump_backtrace+0x0/0x458 [ 83.616655][ T5261] show_stack+0x2c/0x3c [ 83.617305][ T5261] __dump_stack+0x30/0x40 [ 83.617999][ T5261] dump_stack_lvl+0xf4/0x15c [ 83.618763][ T5261] dump_stack+0x1c/0x5c [ 83.619469][ T5261] should_fail+0x3bc/0x514 [ 83.620143][ T5261] __should_failslab+0xbc/0x10c [ 83.620927][ T5261] should_failslab+0x10/0x28 [ 83.621626][ T5261] slab_pre_alloc_hook+0x64/0xe8 [ 83.622414][ T5261] kmem_cache_alloc+0x94/0x3d4 [ 83.623183][ T5261] btrfs_alloc_path+0x5c/0x68 [ 83.623944][ T5261] btrfs_insert_dir_item+0x184/0x3e8 [ 83.624842][ T5261] btrfs_add_link+0x2b0/0xa9c [ 83.625643][ T5261] btrfs_create+0x468/0x514 [ 83.626425][ T5261] path_openat+0xe18/0x2718 [ 83.627220][ T5261] do_filp_open+0x184/0x368 [ 83.627991][ T5261] do_sys_openat2+0x134/0x3f4 [ 83.628780][ T5261] __arm64_sys_openat+0x118/0x14c [ 83.629657][ T5261] invoke_syscall+0x98/0x2b0 [ 83.630422][ T5261] el0_svc_common+0x138/0x258 [ 83.631195][ T5261] do_el0_svc+0x58/0x13c [ 83.631916][ T5261] el0_svc+0x78/0x1d0 [ 83.632583][ T5261] el0t_64_sync_handler+0xcc/0xe4 [ 83.633433][ T5261] el0t_64_sync+0x1a0/0x1a4 [ 83.635209][ T5261] ------------[ cut here ]------------ [ 83.636187][ T5261] WARNING: CPU: 0 PID: 5261 at fs/btrfs/inode.c:6776 btrfs_add_link+0x718/0xa9c [ 83.637555][ T5261] Modules linked in: [ 83.638153][ T5261] CPU: 0 PID: 5261 Comm: syz.0.30 Tainted: G W syzkaller #0 [ 83.639621][ T5261] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/18/2026 [ 83.641304][ T5261] pstate: 62400005 (nZCv daif +PAN -UAO +TCO -DIT -SSBS BTYPE=--) [ 83.642493][ T5261] pc : btrfs_add_link+0x718/0xa9c [ 83.643336][ T5261] lr : btrfs_add_link+0x718/0xa9c [ 83.644179][ T5261] sp : ffff8000213a7580 [ 83.644863][ T5261] x29: ffff8000213a7680 x28: ffff0000dedba8f0 x27: 0000000000000108 [ 83.646224][ T5261] x26: 00000000fffffff4 x25: 0000000000000000 x24: dfff800000000000 [ 83.647533][ T5261] x23: 0000000000000014 x22: 1fffe0001bdb7529 x21: ffff700004274eb8 [ 83.648836][ T5261] x20: 00000000fffffff4 x19: ffff0000dedba948 x18: 0000000000000001 [ 83.650152][ T5261] x17: 0000000000000000 x16: ffff80001125f77c x15: 00000000ffffffff [ 83.651554][ T5261] x14: 0000000000000001 x13: 1fffe000341f05ab x12: 0000000000ff0100 [ 83.652976][ T5261] x11: 0000000000000000 x10: 0000000000000000 x9 : c0f6426144f6a000 [ 83.654344][ T5261] x8 : c0f6426144f6a000 x7 : 0000000000000001 x6 : 0000000000000001 [ 83.655651][ T5261] x5 : ffff8000213a6e98 x4 : ffff80001437f3e0 x3 : ffff80000850932c [ 83.657008][ T5261] x2 : 0000000000000001 x1 : 0000000100000000 x0 : 0000000000000026 [ 83.658343][ T5261] Call trace: [ 83.658877][ T5261] btrfs_add_link+0x718/0xa9c [ 83.659668][ T5261] btrfs_create+0x468/0x514 [ 83.660419][ T5261] path_openat+0xe18/0x2718 [ 83.661181][ T5261] do_filp_open+0x184/0x368 [ 83.661933][ T5261] do_sys_openat2+0x134/0x3f4 [ 83.662716][ T5261] __arm64_sys_openat+0x118/0x14c [ 83.663530][ T5261] invoke_syscall+0x98/0x2b0 [ 83.664283][ T5261] el0_svc_common+0x138/0x258 [ 83.665050][ T5261] do_el0_svc+0x58/0x13c [ 83.665723][ T5261] el0_svc+0x78/0x1d0 [ 83.666397][ T5261] el0t_64_sync_handler+0xcc/0xe4 [ 83.667202][ T5261] el0t_64_sync+0x1a0/0x1a4 [ 83.667934][ T5261] irq event stamp: 79908 [ 83.668634][ T5261] hardirqs last enabled at (79907): [] __up_console_sem+0xb4/0xfc [ 83.670237][ T5261] hardirqs last disabled at (79908): [] el1_dbg+0x24/0x80 [ 83.671665][ T5261] softirqs last enabled at (79888): [] handle_softirqs+0xa40/0xbe4 [ 83.673264][ T5261] softirqs last disabled at (79801): [] __irq_exit_rcu+0x240/0x43c [ 83.674868][ T5261] ---[ end trace 11760cd20ce9d7e8 ]--- [ 83.676616][ T5261] BTRFS: error (device loop0) in btrfs_add_link:6776: errno=-12 Out of memory [ 83.826403][ T5283] BTRFS: device fsid ed167579-eb65-4e76-9a50-61ac97e9b59d devid 1 transid 8 /dev/loop0 scanned by syz.0.31 (5283) [ 83.851545][ T5283] FAULT_INJECTION: forcing a failure. [ 83.851545][ T5283] name failslab, interval 1, probability 0, space 0, times 0 [ 83.854790][ T5283] CPU: 1 PID: 5283 Comm: syz.0.31 Tainted: G W syzkaller #0 [ 83.856157][ T5283] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/18/2026 [ 83.857813][ T5283] Call trace: [ 83.858337][ T5283] dump_backtrace+0x0/0x458 [ 83.859125][ T5283] show_stack+0x2c/0x3c [ 83.859814][ T5283] __dump_stack+0x30/0x40 [ 83.860530][ T5283] dump_stack_lvl+0xf4/0x15c [ 83.861307][ T5283] dump_stack+0x1c/0x5c [ 83.862040][ T5283] should_fail+0x3bc/0x514 [ 83.862750][ T5283] __should_failslab+0xbc/0x10c [ 83.863537][ T5283] should_failslab+0x10/0x28 [ 83.864325][ T5283] slab_pre_alloc_hook+0x64/0xe8 [ 83.865169][ T5283] kmem_cache_alloc+0x94/0x3d4 [ 83.865947][ T5283] btrfs_alloc_path+0x5c/0x68 [ 83.866716][ T5283] btrfs_insert_dir_item+0x184/0x3e8 [ 83.867602][ T5283] btrfs_add_link+0x2b0/0xa9c [ 83.868387][ T5283] btrfs_create+0x468/0x514 [ 83.869163][ T5283] path_openat+0xe18/0x2718 [ 83.869926][ T5283] do_filp_open+0x184/0x368 [ 83.870837][ T5283] do_sys_openat2+0x134/0x3f4 [ 83.871666][ T5283] __arm64_sys_openat+0x118/0x14c [ 83.872534][ T5283] invoke_syscall+0x98/0x2b0 [ 83.873329][ T5283] el0_svc_common+0x138/0x258 [ 83.874098][ T5283] do_el0_svc+0x58/0x13c [ 83.874836][ T5283] el0_svc+0x78/0x1d0 [ 83.875471][ T5283] el0t_64_sync_handler+0xcc/0xe4 [ 83.876304][ T5283] el0t_64_sync+0x1a0/0x1a4 [ 83.878538][ T5283] ------------[ cut here ]------------ [ 83.879506][ T5283] WARNING: CPU: 1 PID: 5283 at fs/btrfs/inode.c:6776 btrfs_add_link+0x718/0xa9c [ 83.880884][ T5283] Modules linked in: [ 83.881500][ T5283] CPU: 1 PID: 5283 Comm: syz.0.31 Tainted: G W syzkaller #0 [ 83.882964][ T5283] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/18/2026 [ 83.884687][ T5283] pstate: 62400005 (nZCv daif +PAN -UAO +TCO -DIT -SSBS BTYPE=--) [ 83.885950][ T5283] pc : btrfs_add_link+0x718/0xa9c [ 83.886728][ T5283] lr : btrfs_add_link+0x718/0xa9c [ 83.887532][ T5283] sp : ffff8000210f7580 [ 83.888218][ T5283] x29: ffff8000210f7680 x28: ffff0000def82840 x27: 0000000000000108 [ 83.889504][ T5283] x26: 00000000fffffff4 x25: 0000000000000000 x24: dfff800000000000 [ 83.890820][ T5283] x23: 0000000000000014 x22: 1fffe0001bdf0513 x21: ffff70000421eeb8 [ 83.892165][ T5283] x20: 00000000fffffff4 x19: ffff0000def82898 x18: 0000000000000001 [ 83.893513][ T5283] x17: 0000000000000000 x16: ffff80001125f77c x15: 00000000ffffffff [ 83.894835][ T5283] x14: 0000000000000001 x13: 1fffe000341f47ab x12: 0000000000ff0100 [ 83.896171][ T5283] x11: 0000000000000000 x10: 0000000000000000 x9 : 1dcfac1bbf706900 [ 83.897461][ T5283] x8 : 1dcfac1bbf706900 x7 : 0000000000000001 x6 : 0000000000000001 [ 83.898779][ T5283] x5 : ffff8000210f6e98 x4 : ffff80001437f3e0 x3 : ffff80000850932c [ 83.900166][ T5283] x2 : 0000000000000001 x1 : 0000000100000000 x0 : 0000000000000026 [ 83.901511][ T5283] Call trace: [ 83.902029][ T5283] btrfs_add_link+0x718/0xa9c [ 83.902844][ T5283] btrfs_create+0x468/0x514 [ 83.903618][ T5283] path_openat+0xe18/0x2718 [ 83.904359][ T5283] do_filp_open+0x184/0x368 [ 83.905048][ T5283] do_sys_openat2+0x134/0x3f4 [ 83.905797][ T5283] __arm64_sys_openat+0x118/0x14c [ 83.906605][ T5283] invoke_syscall+0x98/0x2b0 [ 83.907407][ T5283] el0_svc_common+0x138/0x258 [ 83.908201][ T5283] do_el0_svc+0x58/0x13c [ 83.908876][ T5283] el0_svc+0x78/0x1d0 [ 83.909543][ T5283] el0t_64_sync_handler+0xcc/0xe4 [ 83.910316][ T5283] el0t_64_sync+0x1a0/0x1a4 [ 83.911033][ T5283] irq event stamp: 79958 [ 83.911769][ T5283] hardirqs last enabled at (79957): [] __up_console_sem+0xb4/0xfc [ 83.913365][ T5283] hardirqs last disabled at (79958): [] el1_dbg+0x24/0x80 [ 83.914828][ T5283] softirqs last enabled at (79938): [] handle_softirqs+0xa40/0xbe4 [ 83.916401][ T5283] softirqs last disabled at (79853): [] __irq_exit_rcu+0x240/0x43c [ 83.917950][ T5283] ---[ end trace 11760cd20ce9d7e9 ]--- [ 83.920795][ T5283] BTRFS: error (device loop0) in btrfs_add_link:6776: errno=-12 Out of memory 1970/01/01 00:01:23 executed programs: 19 [ 84.129751][ T5305] set_capacity_and_notify: 7 callbacks suppressed [ 84.129763][ T5305] loop0: detected capacity change from 0 to 32768 [ 84.173060][ T5305] BTRFS: device fsid ed167579-eb65-4e76-9a50-61ac97e9b59d devid 1 transid 8 /dev/loop0 scanned by syz.0.32 (5305) [ 84.175948][ T5305] btrfs_printk: 165 callbacks suppressed [ 84.175954][ T5305] BTRFS info (device loop0): using sha256 (sha256-ce) checksum algorithm [ 84.178322][ T5305] BTRFS info (device loop0): setting nodatacow, compression disabled [ 84.179673][ T5305] BTRFS info (device loop0): setting datacow [ 84.180621][ T5305] BTRFS info (device loop0): doing ref verification [ 84.182226][ T5305] BTRFS info (device loop0): force clearing of disk cache [ 84.183321][ T5305] BTRFS info (device loop0): turning off barriers [ 84.184395][ T5305] BTRFS info (device loop0): use zlib compression, level 3 [ 84.185621][ T5305] BTRFS info (device loop0): using free space tree [ 84.186691][ T5305] BTRFS info (device loop0): has skinny extents [ 84.195605][ T5305] BTRFS info (device loop0): clearing free space tree [ 84.196697][ T5305] BTRFS info (device loop0): clearing compat-ro feature flag for FREE_SPACE_TREE (0x1) [ 84.198140][ T5305] BTRFS info (device loop0): clearing compat-ro feature flag for FREE_SPACE_TREE_VALID (0x2) [ 84.202142][ T5305] BTRFS info (device loop0): creating free space tree [ 84.203494][ T5305] BTRFS info (device loop0): setting compat-ro feature flag for FREE_SPACE_TREE (0x1) [ 84.204959][ T5305] BTRFS info (device loop0): setting compat-ro feature flag for FREE_SPACE_TREE_VALID (0x2) [ 84.209108][ T5305] FAULT_INJECTION: forcing a failure. [ 84.209108][ T5305] name failslab, interval 1, probability 0, space 0, times 0 [ 84.211257][ T5305] CPU: 1 PID: 5305 Comm: syz.0.32 Tainted: G W syzkaller #0 [ 84.212662][ T5305] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/18/2026 [ 84.214230][ T5305] Call trace: [ 84.214787][ T5305] dump_backtrace+0x0/0x458 [ 84.215541][ T5305] show_stack+0x2c/0x3c [ 84.216175][ T5305] __dump_stack+0x30/0x40 [ 84.216887][ T5305] dump_stack_lvl+0xf4/0x15c [ 84.217597][ T5305] dump_stack+0x1c/0x5c [ 84.218307][ T5305] should_fail+0x3bc/0x514 [ 84.219072][ T5305] __should_failslab+0xbc/0x10c [ 84.219866][ T5305] should_failslab+0x10/0x28 [ 84.220645][ T5305] slab_pre_alloc_hook+0x64/0xe8 [ 84.221492][ T5305] kmem_cache_alloc+0x94/0x3d4 [ 84.222293][ T5305] btrfs_alloc_path+0x5c/0x68 [ 84.223106][ T5305] btrfs_insert_dir_item+0x184/0x3e8 [ 84.223981][ T5305] btrfs_add_link+0x2b0/0xa9c [ 84.224768][ T5305] btrfs_create+0x468/0x514 [ 84.225543][ T5305] path_openat+0xe18/0x2718 [ 84.226254][ T5305] do_filp_open+0x184/0x368 [ 84.226986][ T5305] do_sys_openat2+0x134/0x3f4 [ 84.227755][ T5305] __arm64_sys_openat+0x118/0x14c [ 84.228603][ T5305] invoke_syscall+0x98/0x2b0 [ 84.229375][ T5305] el0_svc_common+0x138/0x258 [ 84.230164][ T5305] do_el0_svc+0x58/0x13c [ 84.230829][ T5305] el0_svc+0x78/0x1d0 [ 84.231460][ T5305] el0t_64_sync_handler+0xcc/0xe4 [ 84.232283][ T5305] el0t_64_sync+0x1a0/0x1a4 [ 84.235317][ T5305] ------------[ cut here ]------------ [ 84.236288][ T5305] WARNING: CPU: 1 PID: 5305 at fs/btrfs/inode.c:6776 btrfs_add_link+0x718/0xa9c [ 84.237768][ T5305] Modules linked in: [ 84.238382][ T5305] CPU: 1 PID: 5305 Comm: syz.0.32 Tainted: G W syzkaller #0 [ 84.239789][ T5305] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/18/2026 [ 84.241483][ T5305] pstate: 62400005 (nZCv daif +PAN -UAO +TCO -DIT -SSBS BTYPE=--) [ 84.242765][ T5305] pc : btrfs_add_link+0x718/0xa9c [ 84.243604][ T5305] lr : btrfs_add_link+0x718/0xa9c [ 84.244406][ T5305] sp : ffff800021557580 [ 84.245025][ T5305] x29: ffff800021557680 x28: ffff0000def82b00 x27: 0000000000000108 [ 84.246368][ T5305] x26: 00000000fffffff4 x25: 0000000000000000 x24: dfff800000000000 [ 84.247746][ T5305] x23: 0000000000000014 x22: 1fffe0001bdf056b x21: ffff7000042aaeb8 [ 84.249092][ T5305] x20: 00000000fffffff4 x19: ffff0000def82b58 x18: 0000000000000001 [ 84.250463][ T5305] x17: 0000000000000000 x16: ffff80001125f77c x15: 00000000ffffffff [ 84.251806][ T5305] x14: 0000000000000001 x13: 1fffe000341f47ab x12: 0000000000ff0100 [ 84.253251][ T5305] x11: 0000000000000000 x10: 0000000000000000 x9 : 7bae3f4f0a87fd00 [ 84.254633][ T5305] x8 : 7bae3f4f0a87fd00 x7 : 0000000000000001 x6 : 0000000000000001 [ 84.256019][ T5305] x5 : ffff800021556e98 x4 : ffff80001437f3e0 x3 : ffff80000850932c [ 84.257374][ T5305] x2 : 0000000000000001 x1 : 0000000100000000 x0 : 0000000000000026 [ 84.258657][ T5305] Call trace: [ 84.259203][ T5305] btrfs_add_link+0x718/0xa9c [ 84.259968][ T5305] btrfs_create+0x468/0x514 [ 84.260746][ T5305] path_openat+0xe18/0x2718 [ 84.261450][ T5305] do_filp_open+0x184/0x368 [ 84.262197][ T5305] do_sys_openat2+0x134/0x3f4 [ 84.262977][ T5305] __arm64_sys_openat+0x118/0x14c [ 84.263849][ T5305] invoke_syscall+0x98/0x2b0 [ 84.264618][ T5305] el0_svc_common+0x138/0x258 [ 84.265396][ T5305] do_el0_svc+0x58/0x13c [ 84.266092][ T5305] el0_svc+0x78/0x1d0 [ 84.266832][ T5305] el0t_64_sync_handler+0xcc/0xe4 [ 84.267773][ T5305] el0t_64_sync+0x1a0/0x1a4 [ 84.268498][ T5305] irq event stamp: 79718 [ 84.269192][ T5305] hardirqs last enabled at (79717): [] __up_console_sem+0xb4/0xfc [ 84.270783][ T5305] hardirqs last disabled at (79718): [] el1_dbg+0x24/0x80 [ 84.272229][ T5305] softirqs last enabled at (79698): [] handle_softirqs+0xa40/0xbe4 [ 84.273811][ T5305] softirqs last disabled at (79669): [] __irq_exit_rcu+0x240/0x43c [ 84.275397][ T5305] ---[ end trace 11760cd20ce9d7ea ]--- [ 84.279031][ T5305] BTRFS: error (device loop0) in btrfs_add_link:6776: errno=-12 Out of memory [ 84.280452][ T5305] BTRFS info (device loop0): forced readonly [ 84.440497][ T5327] loop0: detected capacity change from 0 to 32768 [ 84.486034][ T5327] BTRFS: device fsid ed167579-eb65-4e76-9a50-61ac97e9b59d devid 1 transid 8 /dev/loop0 scanned by syz.0.33 (5327) [ 84.489844][ T5327] BTRFS info (device loop0): using sha256 (sha256-ce) checksum algorithm [ 84.491473][ T5327] BTRFS info (device loop0): setting nodatacow, compression disabled [ 84.493136][ T5327] BTRFS info (device loop0): setting datacow [ 84.494119][ T5327] BTRFS info (device loop0): doing ref verification [ 84.495156][ T5327] BTRFS info (device loop0): force clearing of disk cache [ 84.496340][ T5327] BTRFS info (device loop0): turning off barriers [ 84.497435][ T5327] BTRFS info (device loop0): use zlib compression, level 3 [ 84.498573][ T5327] BTRFS info (device loop0): using free space tree [ 84.499634][ T5327] BTRFS info (device loop0): has skinny extents [ 84.508024][ T5327] BTRFS info (device loop0): clearing free space tree [ 84.509209][ T5327] BTRFS info (device loop0): clearing compat-ro feature flag for FREE_SPACE_TREE (0x1) [ 84.510811][ T5327] BTRFS info (device loop0): clearing compat-ro feature flag for FREE_SPACE_TREE_VALID (0x2) [ 84.515482][ T5327] BTRFS info (device loop0): creating free space tree [ 84.516863][ T5327] BTRFS info (device loop0): setting compat-ro feature flag for FREE_SPACE_TREE (0x1) [ 84.518353][ T5327] BTRFS info (device loop0): setting compat-ro feature flag for FREE_SPACE_TREE_VALID (0x2) [ 84.523113][ T5327] FAULT_INJECTION: forcing a failure. [ 84.523113][ T5327] name failslab, interval 1, probability 0, space 0, times 0 [ 84.525137][ T5327] CPU: 1 PID: 5327 Comm: syz.0.33 Tainted: G W syzkaller #0 [ 84.526620][ T5327] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/18/2026 [ 84.528295][ T5327] Call trace: [ 84.528830][ T5327] dump_backtrace+0x0/0x458 [ 84.529554][ T5327] show_stack+0x2c/0x3c [ 84.530208][ T5327] __dump_stack+0x30/0x40 [ 84.530867][ T5327] dump_stack_lvl+0xf4/0x15c [ 84.531585][ T5327] dump_stack+0x1c/0x5c [ 84.532270][ T5327] should_fail+0x3bc/0x514 [ 84.532975][ T5327] __should_failslab+0xbc/0x10c [ 84.533768][ T5327] should_failslab+0x10/0x28 [ 84.534508][ T5327] slab_pre_alloc_hook+0x64/0xe8 [ 84.535378][ T5327] __kmalloc_node+0xb8/0x508 [ 84.536113][ T5327] memcg_alloc_page_obj_cgroups+0x80/0x170 [ 84.537019][ T5327] new_slab+0x114/0x544 [ 84.537691][ T5327] ___slab_alloc+0x6b4/0xd8c [ 84.538401][ T5327] __slab_alloc+0x68/0xc0 [ 84.539101][ T5327] kmem_cache_alloc+0x2a4/0x3d4 [ 84.539947][ T5327] btrfs_alloc_inode+0x54/0x3ac [ 84.540792][ T5327] new_inode_pseudo+0x68/0x1fc [ 84.541542][ T5327] new_inode+0x38/0x174 [ 84.542189][ T5327] btrfs_new_inode+0x158/0x1564 [ 84.542956][ T5327] btrfs_create+0x24c/0x514 [ 84.543688][ T5327] path_openat+0xe18/0x2718 [ 84.544434][ T5327] do_filp_open+0x184/0x368 [ 84.545150][ T5327] do_sys_openat2+0x134/0x3f4 [ 84.545899][ T5327] __arm64_sys_openat+0x118/0x14c [ 84.546704][ T5327] invoke_syscall+0x98/0x2b0 [ 84.547498][ T5327] el0_svc_common+0x138/0x258 [ 84.548280][ T5327] do_el0_svc+0x58/0x13c [ 84.548946][ T5327] el0_svc+0x78/0x1d0 [ 84.549644][ T5327] el0t_64_sync_handler+0xcc/0xe4 [ 84.550484][ T5327] el0t_64_sync+0x1a0/0x1a4 [ 84.688680][ T5349] loop0: detected capacity change from 0 to 32768 [ 84.725751][ T5349] BTRFS: device fsid ed167579-eb65-4e76-9a50-61ac97e9b59d devid 1 transid 8 /dev/loop0 scanned by syz.0.34 (5349) [ 84.729275][ T5349] BTRFS info (device loop0): using sha256 (sha256-ce) checksum algorithm [ 84.730673][ T5349] BTRFS info (device loop0): setting nodatacow, compression disabled [ 84.732140][ T5349] BTRFS info (device loop0): setting datacow [ 84.733118][ T5349] BTRFS info (device loop0): doing ref verification [ 84.734199][ T5349] BTRFS info (device loop0): force clearing of disk cache [ 84.735491][ T5349] BTRFS info (device loop0): turning off barriers [ 84.736575][ T5349] BTRFS info (device loop0): use zlib compression, level 3 [ 84.737713][ T5349] BTRFS info (device loop0): using free space tree [ 84.738778][ T5349] BTRFS info (device loop0): has skinny extents [ 84.747826][ T5349] BTRFS info (device loop0): clearing free space tree [ 84.748906][ T5349] BTRFS info (device loop0): clearing compat-ro feature flag for FREE_SPACE_TREE (0x1) [ 84.750661][ T5349] BTRFS info (device loop0): clearing compat-ro feature flag for FREE_SPACE_TREE_VALID (0x2) [ 84.754576][ T5349] BTRFS info (device loop0): creating free space tree [ 84.756054][ T5349] BTRFS info (device loop0): setting compat-ro feature flag for FREE_SPACE_TREE (0x1) [ 84.757613][ T5349] BTRFS info (device loop0): setting compat-ro feature flag for FREE_SPACE_TREE_VALID (0x2) [ 84.762787][ T5349] FAULT_INJECTION: forcing a failure. [ 84.762787][ T5349] name failslab, interval 1, probability 0, space 0, times 0 [ 84.764776][ T5349] CPU: 0 PID: 5349 Comm: syz.0.34 Tainted: G W syzkaller #0 [ 84.766118][ T5349] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/18/2026 [ 84.767808][ T5349] Call trace: [ 84.768364][ T5349] dump_backtrace+0x0/0x458 [ 84.769109][ T5349] show_stack+0x2c/0x3c [ 84.769760][ T5349] __dump_stack+0x30/0x40 [ 84.770492][ T5349] dump_stack_lvl+0xf4/0x15c [ 84.771234][ T5349] dump_stack+0x1c/0x5c [ 84.771964][ T5349] should_fail+0x3bc/0x514 [ 84.772712][ T5349] __should_failslab+0xbc/0x10c [ 84.773496][ T5349] should_failslab+0x10/0x28 [ 84.774225][ T5349] slab_pre_alloc_hook+0x64/0xe8 [ 84.775143][ T5349] kmem_cache_alloc+0x94/0x3d4 [ 84.775955][ T5349] btrfs_alloc_path+0x5c/0x68 [ 84.776725][ T5349] btrfs_insert_dir_item+0x184/0x3e8 [ 84.777589][ T5349] btrfs_add_link+0x2b0/0xa9c [ 84.778334][ T5349] btrfs_create+0x468/0x514 [ 84.779094][ T5349] path_openat+0xe18/0x2718 [ 84.779843][ T5349] do_filp_open+0x184/0x368 [ 84.780595][ T5349] do_sys_openat2+0x134/0x3f4 [ 84.781398][ T5349] __arm64_sys_openat+0x118/0x14c [ 84.782247][ T5349] invoke_syscall+0x98/0x2b0 [ 84.782957][ T5349] el0_svc_common+0x138/0x258 [ 84.783721][ T5349] do_el0_svc+0x58/0x13c [ 84.784430][ T5349] el0_svc+0x78/0x1d0 [ 84.785117][ T5349] el0t_64_sync_handler+0xcc/0xe4 [ 84.785957][ T5349] el0t_64_sync+0x1a0/0x1a4 [ 84.787503][ T5349] ------------[ cut here ]------------ [ 84.788408][ T5349] WARNING: CPU: 0 PID: 5349 at fs/btrfs/inode.c:6776 btrfs_add_link+0x718/0xa9c [ 84.789775][ T5349] Modules linked in: [ 84.790398][ T5349] CPU: 0 PID: 5349 Comm: syz.0.34 Tainted: G W syzkaller #0 [ 84.791855][ T5349] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/18/2026 [ 84.793434][ T5349] pstate: 62400005 (nZCv daif +PAN -UAO +TCO -DIT -SSBS BTYPE=--) [ 84.794760][ T5349] pc : btrfs_add_link+0x718/0xa9c [ 84.795549][ T5349] lr : btrfs_add_link+0x718/0xa9c [ 84.796347][ T5349] sp : ffff800021747580 [ 84.797025][ T5349] x29: ffff800021747680 x28: ffff0000dedbad10 x27: 0000000000000108 [ 84.798383][ T5349] x26: 00000000fffffff4 x25: 0000000000000000 x24: dfff800000000000 [ 84.799714][ T5349] x23: 0000000000000014 x22: 1fffe0001bdb75ad x21: ffff7000042e8eb8 [ 84.801100][ T5349] x20: 00000000fffffff4 x19: ffff0000dedbad68 x18: 0000000000000001 [ 84.802476][ T5349] x17: 0000000000000000 x16: ffff80001125f77c x15: 00000000ffffffff [ 84.803809][ T5349] x14: 0000000000000001 x13: 1fffe000341f05ab x12: 0000000000ff0100 [ 84.805221][ T5349] x11: 0000000000000000 x10: 0000000000000000 x9 : e12ac33b80f70f00 [ 84.806549][ T5349] x8 : e12ac33b80f70f00 x7 : 0000000000000001 x6 : 0000000000000001 [ 84.807841][ T5349] x5 : ffff800021746e98 x4 : ffff80001437f3e0 x3 : ffff80000850932c [ 84.809110][ T5349] x2 : 0000000000000001 x1 : 0000000100000000 x0 : 0000000000000026 [ 84.810380][ T5349] Call trace: [ 84.810949][ T5349] btrfs_add_link+0x718/0xa9c [ 84.811667][ T5349] btrfs_create+0x468/0x514 [ 84.812379][ T5349] path_openat+0xe18/0x2718 [ 84.813124][ T5349] do_filp_open+0x184/0x368 [ 84.813890][ T5349] do_sys_openat2+0x134/0x3f4 [ 84.814722][ T5349] __arm64_sys_openat+0x118/0x14c [ 84.815569][ T5349] invoke_syscall+0x98/0x2b0 [ 84.816386][ T5349] el0_svc_common+0x138/0x258 [ 84.817156][ T5349] do_el0_svc+0x58/0x13c [ 84.817865][ T5349] el0_svc+0x78/0x1d0 [ 84.818511][ T5349] el0t_64_sync_handler+0xcc/0xe4 [ 84.819344][ T5349] el0t_64_sync+0x1a0/0x1a4 [ 84.820085][ T5349] irq event stamp: 80602 [ 84.820786][ T5349] hardirqs last enabled at (80601): [] __up_console_sem+0xb4/0xfc [ 84.822298][ T5349] hardirqs last disabled at (80602): [] el1_dbg+0x24/0x80 [ 84.823716][ T5349] softirqs last enabled at (80582): [] handle_softirqs+0xa40/0xbe4 [ 84.825276][ T5349] softirqs last disabled at (80557): [] __irq_exit_rcu+0x240/0x43c [ 84.826898][ T5349] ---[ end trace 11760cd20ce9d7eb ]--- [ 84.829209][ T5349] BTRFS: error (device loop0) in btrfs_add_link:6776: errno=-12 Out of memory [ 84.830590][ T5349] BTRFS info (device loop0): forced readonly [ 84.863399][ T4930] BTRFS: device fsid ed167579-eb65-4e76-9a50-61ac97e9b59d devid 1 transid 10 /dev/loop0 scanned by udevd (4930) [ 84.965443][ T5371] loop0: detected capacity change from 0 to 32768 [ 84.969430][ T5371] BTRFS info (device loop0): using sha256 (sha256-ce) checksum algorithm [ 84.970855][ T5371] BTRFS info (device loop0): setting nodatacow, compression disabled [ 84.973165][ T5371] BTRFS info (device loop0): setting datacow [ 84.974605][ T5371] BTRFS info (device loop0): doing ref verification [ 84.975840][ T5371] BTRFS info (device loop0): force clearing of disk cache [ 84.977157][ T5371] BTRFS info (device loop0): turning off barriers [ 84.978282][ T5371] BTRFS info (device loop0): use zlib compression, level 3 [ 84.979435][ T5371] BTRFS info (device loop0): using free space tree [ 84.980506][ T5371] BTRFS info (device loop0): has skinny extents [ 84.988557][ T5371] BTRFS info (device loop0): clearing free space tree [ 84.989628][ T5371] BTRFS info (device loop0): clearing compat-ro feature flag for FREE_SPACE_TREE (0x1) [ 84.991226][ T5371] BTRFS info (device loop0): clearing compat-ro feature flag for FREE_SPACE_TREE_VALID (0x2) [ 84.994872][ T5371] BTRFS info (device loop0): creating free space tree [ 84.996229][ T5371] BTRFS info (device loop0): setting compat-ro feature flag for FREE_SPACE_TREE (0x1) [ 84.997901][ T5371] BTRFS info (device loop0): setting compat-ro feature flag for FREE_SPACE_TREE_VALID (0x2) [ 85.002882][ T5371] FAULT_INJECTION: forcing a failure. [ 85.002882][ T5371] name failslab, interval 1, probability 0, space 0, times 0 [ 85.005142][ T5371] CPU: 0 PID: 5371 Comm: syz.0.35 Tainted: G W syzkaller #0 [ 85.006512][ T5371] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/18/2026 [ 85.008273][ T5371] Call trace: [ 85.008800][ T5371] dump_backtrace+0x0/0x458 [ 85.009547][ T5371] show_stack+0x2c/0x3c [ 85.010299][ T5371] __dump_stack+0x30/0x40 [ 85.010959][ T5371] dump_stack_lvl+0xf4/0x15c [ 85.011662][ T5371] dump_stack+0x1c/0x5c [ 85.012346][ T5371] should_fail+0x3bc/0x514 [ 85.013126][ T5371] __should_failslab+0xbc/0x10c [ 85.013984][ T5371] should_failslab+0x10/0x28 [ 85.014793][ T5371] slab_pre_alloc_hook+0x64/0xe8 [ 85.015671][ T5371] kmem_cache_alloc+0x94/0x3d4 [ 85.016467][ T5371] btrfs_alloc_path+0x5c/0x68 [ 85.017284][ T5371] btrfs_insert_dir_item+0x184/0x3e8 [ 85.018188][ T5371] btrfs_add_link+0x2b0/0xa9c [ 85.018942][ T5371] btrfs_create+0x468/0x514 [ 85.019665][ T5371] path_openat+0xe18/0x2718 [ 85.020343][ T5371] do_filp_open+0x184/0x368 [ 85.021088][ T5371] do_sys_openat2+0x134/0x3f4 [ 85.021902][ T5371] __arm64_sys_openat+0x118/0x14c [ 85.022733][ T5371] invoke_syscall+0x98/0x2b0 [ 85.023502][ T5371] el0_svc_common+0x138/0x258 [ 85.024295][ T5371] do_el0_svc+0x58/0x13c [ 85.024987][ T5371] el0_svc+0x78/0x1d0 [ 85.025657][ T5371] el0t_64_sync_handler+0xcc/0xe4 [ 85.026466][ T5371] el0t_64_sync+0x1a0/0x1a4 [ 85.028119][ T5371] ------------[ cut here ]------------ [ 85.029052][ T5371] WARNING: CPU: 0 PID: 5371 at fs/btrfs/inode.c:6776 btrfs_add_link+0x718/0xa9c [ 85.030349][ T5371] Modules linked in: [ 85.030946][ T5371] CPU: 0 PID: 5371 Comm: syz.0.35 Tainted: G W syzkaller #0 [ 85.032366][ T5371] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/18/2026 [ 85.034023][ T5371] pstate: 62400005 (nZCv daif +PAN -UAO +TCO -DIT -SSBS BTYPE=--) [ 85.035404][ T5371] pc : btrfs_add_link+0x718/0xa9c [ 85.036199][ T5371] lr : btrfs_add_link+0x718/0xa9c [ 85.037052][ T5371] sp : ffff800021757580 [ 85.037768][ T5371] x29: ffff800021757680 x28: ffff0000dedba0b0 x27: 0000000000000108 [ 85.039060][ T5371] x26: 00000000fffffff4 x25: 0000000000000000 x24: dfff800000000000 [ 85.040404][ T5371] x23: 0000000000000014 x22: 1fffe0001bdb7421 x21: ffff7000042eaeb8 [ 85.041783][ T5371] x20: 00000000fffffff4 x19: ffff0000dedba108 x18: 0000000000000001 [ 85.043135][ T5371] x17: 0000000000000000 x16: ffff80001125f77c x15: 00000000ffffffff [ 85.044463][ T5371] x14: 0000000000000001 x13: 1fffe000341f05ab x12: 0000000000ff0100 [ 85.045754][ T5371] x11: 0000000000000000 x10: 0000000000000000 x9 : e534a35de06b4300 [ 85.047092][ T5371] x8 : e534a35de06b4300 x7 : 0000000000000001 x6 : 0000000000000001 [ 85.048457][ T5371] x5 : ffff800021756e98 x4 : ffff80001437f3e0 x3 : ffff80000850932c [ 85.049769][ T5371] x2 : 0000000000000001 x1 : 0000000100000000 x0 : 0000000000000026 [ 85.051121][ T5371] Call trace: [ 85.051661][ T5371] btrfs_add_link+0x718/0xa9c [ 85.052447][ T5371] btrfs_create+0x468/0x514 [ 85.053232][ T5371] path_openat+0xe18/0x2718 [ 85.054027][ T5371] do_filp_open+0x184/0x368 [ 85.054865][ T5371] do_sys_openat2+0x134/0x3f4 [ 85.055647][ T5371] __arm64_sys_openat+0x118/0x14c [ 85.056422][ T5371] invoke_syscall+0x98/0x2b0 [ 85.057217][ T5371] el0_svc_common+0x138/0x258 [ 85.058033][ T5371] do_el0_svc+0x58/0x13c [ 85.058807][ T5371] el0_svc+0x78/0x1d0 [ 85.059452][ T5371] el0t_64_sync_handler+0xcc/0xe4 [ 85.060325][ T5371] el0t_64_sync+0x1a0/0x1a4 [ 85.061112][ T5371] irq event stamp: 79940 [ 85.061829][ T5371] hardirqs last enabled at (79939): [] __up_console_sem+0xb4/0xfc [ 85.063437][ T5371] hardirqs last disabled at (79940): [] el1_dbg+0x24/0x80 [ 85.064947][ T5371] softirqs last enabled at (79920): [] handle_softirqs+0xa40/0xbe4 [ 85.066576][ T5371] softirqs last disabled at (79871): [] __irq_exit_rcu+0x240/0x43c [ 85.068305][ T5371] ---[ end trace 11760cd20ce9d7ec ]--- [ 85.070562][ T5371] BTRFS: error (device loop0) in btrfs_add_link:6776: errno=-12 Out of memory [ 85.072106][ T5371] BTRFS info (device loop0): forced readonly [ 85.117338][ T4930] BTRFS: device fsid ed167579-eb65-4e76-9a50-61ac97e9b59d devid 1 transid 10 /dev/loop0 scanned by udevd (4930) [ 85.205827][ T5394] loop0: detected capacity change from 0 to 32768 [ 85.216187][ T5394] BTRFS info (device loop0): using sha256 (sha256-ce) checksum algorithm [ 85.217479][ T5394] BTRFS info (device loop0): setting nodatacow, compression disabled [ 85.218975][ T5394] BTRFS info (device loop0): setting datacow [ 85.219895][ T5394] BTRFS info (device loop0): doing ref verification [ 85.220981][ T5394] BTRFS info (device loop0): force clearing of disk cache [ 85.222236][ T5394] BTRFS info (device loop0): turning off barriers [ 85.223558][ T5394] BTRFS info (device loop0): use zlib compression, level 3 [ 85.224715][ T5394] BTRFS info (device loop0): using free space tree [ 85.225774][ T5394] BTRFS info (device loop0): has skinny extents [ 85.239264][ T5394] BTRFS info (device loop0): clearing free space tree [ 85.240456][ T5394] BTRFS info (device loop0): clearing compat-ro feature flag for FREE_SPACE_TREE (0x1) [ 85.242382][ T5394] BTRFS info (device loop0): clearing compat-ro feature flag for FREE_SPACE_TREE_VALID (0x2) [ 85.245886][ T5394] BTRFS info (device loop0): creating free space tree [ 85.247244][ T5394] BTRFS info (device loop0): setting compat-ro feature flag for FREE_SPACE_TREE (0x1) [ 85.248785][ T5394] BTRFS info (device loop0): setting compat-ro feature flag for FREE_SPACE_TREE_VALID (0x2) [ 85.253953][ T5394] FAULT_INJECTION: forcing a failure. [ 85.253953][ T5394] name failslab, interval 1, probability 0, space 0, times 0 [ 85.256199][ T5394] CPU: 0 PID: 5394 Comm: syz.0.36 Tainted: G W syzkaller #0 [ 85.257652][ T5394] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/18/2026 [ 85.259240][ T5394] Call trace: [ 85.259794][ T5394] dump_backtrace+0x0/0x458 [ 85.260587][ T5394] show_stack+0x2c/0x3c [ 85.261311][ T5394] __dump_stack+0x30/0x40 [ 85.262060][ T5394] dump_stack_lvl+0xf4/0x15c [ 85.262851][ T5394] dump_stack+0x1c/0x5c [ 85.263617][ T5394] should_fail+0x3bc/0x514 [ 85.264360][ T5394] __should_failslab+0xbc/0x10c [ 85.265145][ T5394] should_failslab+0x10/0x28 [ 85.265905][ T5394] slab_pre_alloc_hook+0x64/0xe8 [ 85.266732][ T5394] kmem_cache_alloc+0x94/0x3d4 [ 85.267550][ T5394] btrfs_alloc_path+0x5c/0x68 [ 85.268338][ T5394] btrfs_insert_dir_item+0x184/0x3e8 [ 85.269217][ T5394] btrfs_add_link+0x2b0/0xa9c [ 85.270055][ T5394] btrfs_create+0x468/0x514 [ 85.270771][ T5394] path_openat+0xe18/0x2718 [ 85.271618][ T5394] do_filp_open+0x184/0x368 [ 85.272487][ T5394] do_sys_openat2+0x134/0x3f4 [ 85.273306][ T5394] __arm64_sys_openat+0x118/0x14c [ 85.274186][ T5394] invoke_syscall+0x98/0x2b0 [ 85.274957][ T5394] el0_svc_common+0x138/0x258 [ 85.275717][ T5394] do_el0_svc+0x58/0x13c [ 85.276402][ T5394] el0_svc+0x78/0x1d0 [ 85.277056][ T5394] el0t_64_sync_handler+0xcc/0xe4 [ 85.277908][ T5394] el0t_64_sync+0x1a0/0x1a4 [ 85.280237][ T5394] ------------[ cut here ]------------ [ 85.281195][ T5394] WARNING: CPU: 0 PID: 5394 at fs/btrfs/inode.c:6776 btrfs_add_link+0x718/0xa9c [ 85.282757][ T5394] Modules linked in: [ 85.283451][ T5394] CPU: 0 PID: 5394 Comm: syz.0.36 Tainted: G W syzkaller #0 [ 85.284999][ T5394] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/18/2026 [ 85.286686][ T5394] pstate: 62400005 (nZCv daif +PAN -UAO +TCO -DIT -SSBS BTYPE=--) [ 85.288001][ T5394] pc : btrfs_add_link+0x718/0xa9c [ 85.288842][ T5394] lr : btrfs_add_link+0x718/0xa9c [ 85.289692][ T5394] sp : ffff800021747580 [ 85.290387][ T5394] x29: ffff800021747680 x28: ffff0000dedbadc0 x27: 0000000000000108 [ 85.291693][ T5394] x26: 00000000fffffff4 x25: 0000000000000000 x24: dfff800000000000 [ 85.293130][ T5394] x23: 0000000000000014 x22: 1fffe0001bdb75c3 x21: ffff7000042e8eb8 [ 85.294455][ T5394] x20: 00000000fffffff4 x19: ffff0000dedbae18 x18: 0000000000000001 [ 85.295819][ T5394] x17: 0000000000000000 x16: ffff80001125f77c x15: 00000000ffffffff [ 85.297182][ T5394] x14: 0000000000000001 x13: 1fffe000341f05ab x12: 0000000000ff0100 [ 85.298562][ T5394] x11: 0000000000000000 x10: 0000000000000000 x9 : ce37517a3f08a400 [ 85.299862][ T5394] x8 : ce37517a3f08a400 x7 : 0000000000000001 x6 : 0000000000000001 [ 85.301219][ T5394] x5 : ffff800021746e98 x4 : ffff80001437f3e0 x3 : ffff80000850932c [ 85.302620][ T5394] x2 : 0000000000000001 x1 : 0000000100000000 x0 : 0000000000000026 [ 85.303994][ T5394] Call trace: [ 85.304553][ T5394] btrfs_add_link+0x718/0xa9c [ 85.305329][ T5394] btrfs_create+0x468/0x514 [ 85.306069][ T5394] path_openat+0xe18/0x2718 [ 85.306803][ T5394] do_filp_open+0x184/0x368 [ 85.307520][ T5394] do_sys_openat2+0x134/0x3f4 [ 85.308318][ T5394] __arm64_sys_openat+0x118/0x14c [ 85.309137][ T5394] invoke_syscall+0x98/0x2b0 [ 85.310005][ T5394] el0_svc_common+0x138/0x258 [ 85.310762][ T5394] do_el0_svc+0x58/0x13c [ 85.311452][ T5394] el0_svc+0x78/0x1d0 [ 85.312134][ T5394] el0t_64_sync_handler+0xcc/0xe4 [ 85.312975][ T5394] el0t_64_sync+0x1a0/0x1a4 [ 85.313749][ T5394] irq event stamp: 80784 [ 85.314449][ T5394] hardirqs last enabled at (80783): [] __up_console_sem+0xb4/0xfc [ 85.316006][ T5394] hardirqs last disabled at (80784): [] el1_dbg+0x24/0x80 [ 85.317519][ T5394] softirqs last enabled at (80764): [] handle_softirqs+0xa40/0xbe4 [ 85.319150][ T5394] softirqs last disabled at (80747): [] __irq_exit_rcu+0x240/0x43c [ 85.320784][ T5394] ---[ end trace 11760cd20ce9d7ed ]--- [ 85.324321][ T5394] BTRFS: error (device loop0) in btrfs_add_link:6776: errno=-12 Out of memory [ 85.325730][ T5394] BTRFS info (device loop0): forced readonly [ 85.513057][ T5417] loop0: detected capacity change from 0 to 32768 [ 85.553657][ T5417] BTRFS: device fsid ed167579-eb65-4e76-9a50-61ac97e9b59d devid 1 transid 8 /dev/loop0 scanned by syz.0.37 (5417) [ 85.556897][ T5417] BTRFS info (device loop0): using sha256 (sha256-ce) checksum algorithm [ 85.558169][ T5417] BTRFS info (device loop0): setting nodatacow, compression disabled [ 85.559578][ T5417] BTRFS info (device loop0): setting datacow [ 85.560572][ T5417] BTRFS info (device loop0): doing ref verification [ 85.561673][ T5417] BTRFS info (device loop0): force clearing of disk cache [ 85.563185][ T5417] BTRFS info (device loop0): turning off barriers [ 85.564252][ T5417] BTRFS info (device loop0): use zlib compression, level 3 [ 85.565416][ T5417] BTRFS info (device loop0): using free space tree [ 85.566524][ T5417] BTRFS info (device loop0): has skinny extents [ 85.575050][ T5417] BTRFS info (device loop0): clearing free space tree [ 85.576229][ T5417] BTRFS info (device loop0): clearing compat-ro feature flag for FREE_SPACE_TREE (0x1) [ 85.577800][ T5417] BTRFS info (device loop0): clearing compat-ro feature flag for FREE_SPACE_TREE_VALID (0x2) [ 85.581247][ T5417] BTRFS info (device loop0): creating free space tree [ 85.582990][ T5417] BTRFS info (device loop0): setting compat-ro feature flag for FREE_SPACE_TREE (0x1) [ 85.584497][ T5417] BTRFS info (device loop0): setting compat-ro feature flag for FREE_SPACE_TREE_VALID (0x2) [ 85.589107][ T5417] FAULT_INJECTION: forcing a failure. [ 85.589107][ T5417] name fail_page_alloc, interval 1, probability 0, space 0, times 1 [ 85.591169][ T5417] CPU: 0 PID: 5417 Comm: syz.0.37 Tainted: G W syzkaller #0 [ 85.592586][ T5417] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/18/2026 [ 85.594365][ T5417] Call trace: [ 85.594907][ T5417] dump_backtrace+0x0/0x458 [ 85.595663][ T5417] show_stack+0x2c/0x3c [ 85.596350][ T5417] __dump_stack+0x30/0x40 [ 85.597066][ T5417] dump_stack_lvl+0xf4/0x15c [ 85.597797][ T5417] dump_stack+0x1c/0x5c [ 85.598503][ T5417] should_fail+0x3bc/0x514 [ 85.599263][ T5417] should_fail_alloc_page+0x74/0xa8 [ 85.600176][ T5417] prepare_alloc_pages+0x160/0x45c [ 85.601047][ T5417] __alloc_pages+0x108/0x470 [ 85.601791][ T5417] alloc_pages+0x34c/0x5c0 [ 85.602522][ T5417] new_slab+0xe0/0x544 [ 85.603191][ T5417] ___slab_alloc+0x6b4/0xd8c [ 85.604000][ T5417] __slab_alloc+0x68/0xc0 [ 85.604738][ T5417] kmem_cache_alloc+0x2a4/0x3d4 [ 85.605520][ T5417] btrfs_get_or_create_delayed_node+0x114/0x4a8 [ 85.606601][ T5417] btrfs_delayed_update_inode+0x3c/0x1b68 [ 85.607609][ T5417] btrfs_update_inode+0x210/0x3d4 [ 85.608434][ T5417] btrfs_create+0x364/0x514 [ 85.609217][ T5417] path_openat+0xe18/0x2718 [ 85.609970][ T5417] do_filp_open+0x184/0x368 [ 85.610787][ T5417] do_sys_openat2+0x134/0x3f4 [ 85.611628][ T5417] __arm64_sys_openat+0x118/0x14c [ 85.612559][ T5417] invoke_syscall+0x98/0x2b0 [ 85.613365][ T5417] el0_svc_common+0x138/0x258 [ 85.614117][ T5417] do_el0_svc+0x58/0x13c [ 85.614842][ T5417] el0_svc+0x78/0x1d0 [ 85.615478][ T5417] el0t_64_sync_handler+0xcc/0xe4 [ 85.616296][ T5417] el0t_64_sync+0x1a0/0x1a4 [ 85.791997][ T5438] loop0: detected capacity change from 0 to 32768 [ 85.863074][ T5438] BTRFS: device fsid ed167579-eb65-4e76-9a50-61ac97e9b59d devid 1 transid 8 /dev/loop0 scanned by syz.0.38 (5438) [ 85.866618][ T5438] BTRFS info (device loop0): using sha256 (sha256-ce) checksum algorithm [ 85.867948][ T5438] BTRFS info (device loop0): setting nodatacow, compression disabled [ 85.869551][ T5438] BTRFS info (device loop0): setting datacow [ 85.871140][ T5438] BTRFS info (device loop0): doing ref verification [ 85.872368][ T5438] BTRFS info (device loop0): force clearing of disk cache [ 85.873471][ T5438] BTRFS info (device loop0): turning off barriers [ 85.886381][ T5438] FAULT_INJECTION: forcing a failure. [ 85.886381][ T5438] name failslab, interval 1, probability 0, space 0, times 0 [ 85.888540][ T5438] CPU: 0 PID: 5438 Comm: syz.0.38 Tainted: G W syzkaller #0 [ 85.890051][ T5438] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/18/2026 [ 85.891745][ T5438] Call trace: [ 85.892291][ T5438] dump_backtrace+0x0/0x458 [ 85.893038][ T5438] show_stack+0x2c/0x3c [ 85.893799][ T5438] __dump_stack+0x30/0x40 [ 85.894533][ T5438] dump_stack_lvl+0xf4/0x15c [ 85.895294][ T5438] dump_stack+0x1c/0x5c [ 85.895997][ T5438] should_fail+0x3bc/0x514 [ 85.896767][ T5438] __should_failslab+0xbc/0x10c [ 85.897526][ T5438] should_failslab+0x10/0x28 [ 85.898260][ T5438] slab_pre_alloc_hook+0x64/0xe8 [ 85.899151][ T5438] kmem_cache_alloc+0x94/0x3d4 [ 85.899946][ T5438] btrfs_alloc_path+0x5c/0x68 [ 85.900769][ T5438] btrfs_insert_dir_item+0x184/0x3e8 [ 85.901709][ T5438] btrfs_add_link+0x2b0/0xa9c [ 85.902531][ T5438] btrfs_create+0x468/0x514 [ 85.903339][ T5438] path_openat+0xe18/0x2718 [ 85.904111][ T5438] do_filp_open+0x184/0x368 [ 85.904890][ T5438] do_sys_openat2+0x134/0x3f4 [ 85.905667][ T5438] __arm64_sys_openat+0x118/0x14c [ 85.906540][ T5438] invoke_syscall+0x98/0x2b0 [ 85.907343][ T5438] el0_svc_common+0x138/0x258 [ 85.908123][ T5438] do_el0_svc+0x58/0x13c [ 85.908867][ T5438] el0_svc+0x78/0x1d0 [ 85.909540][ T5438] el0t_64_sync_handler+0xcc/0xe4 [ 85.910397][ T5438] el0t_64_sync+0x1a0/0x1a4 [ 85.911902][ T5438] ------------[ cut here ]------------ [ 85.912951][ T5438] WARNING: CPU: 1 PID: 5438 at fs/btrfs/inode.c:6776 btrfs_add_link+0x718/0xa9c [ 85.914391][ T5438] Modules linked in: [ 85.915058][ T5438] CPU: 1 PID: 5438 Comm: syz.0.38 Tainted: G W syzkaller #0 [ 85.916457][ T5438] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/18/2026 [ 85.918179][ T5438] pstate: 62400005 (nZCv daif +PAN -UAO +TCO -DIT -SSBS BTYPE=--) [ 85.919439][ T5438] pc : btrfs_add_link+0x718/0xa9c [ 85.920253][ T5438] lr : btrfs_add_link+0x718/0xa9c [ 85.921113][ T5438] sp : ffff800021747580 [ 85.921743][ T5438] x29: ffff800021747680 x28: ffff0000ded9fdc0 x27: 0000000000000108 [ 85.923103][ T5438] x26: 00000000fffffff4 x25: 0000000000000000 x24: dfff800000000000 [ 85.924529][ T5438] x23: 0000000000000014 x22: 1fffe0001bdb3fc3 x21: ffff7000042e8eb8 [ 85.925914][ T5438] x20: 00000000fffffff4 x19: ffff0000ded9fe18 x18: 0000000000000001 [ 85.927310][ T5438] x17: 0000000000000000 x16: ffff800008304c04 x15: 00000000ffffffff [ 85.928633][ T5438] x14: 0000000000000001 x13: 1ffff000042e8dd0 x12: 0000000000ff0100 [ 85.929976][ T5438] x11: 0000000000000000 x10: 0000000000000000 x9 : 65699402fd34bc00 [ 85.931315][ T5438] x8 : 65699402fd34bc00 x7 : 0000000000000001 x6 : 0000000000000001 [ 85.932653][ T5438] x5 : ffff800021746e98 x4 : ffff80001437f3e0 x3 : ffff800008304d14 [ 85.934065][ T5438] x2 : 0000000000000001 x1 : 0000000100000000 x0 : 0000000000000026 [ 85.935504][ T5438] Call trace: [ 85.936046][ T5438] btrfs_add_link+0x718/0xa9c [ 85.936842][ T5438] btrfs_create+0x468/0x514 [ 85.937645][ T5438] path_openat+0xe18/0x2718 [ 85.938404][ T5438] do_filp_open+0x184/0x368 [ 85.939171][ T5438] do_sys_openat2+0x134/0x3f4 [ 85.940056][ T5438] __arm64_sys_openat+0x118/0x14c [ 85.940898][ T5438] invoke_syscall+0x98/0x2b0 [ 85.941679][ T5438] el0_svc_common+0x138/0x258 [ 85.942371][ T5438] do_el0_svc+0x58/0x13c [ 85.943006][ T5438] el0_svc+0x78/0x1d0 [ 85.943670][ T5438] el0t_64_sync_handler+0xcc/0xe4 [ 85.944474][ T5438] el0t_64_sync+0x1a0/0x1a4 [ 85.945169][ T5438] irq event stamp: 79934 [ 85.945842][ T5438] hardirqs last enabled at (79933): [] __up_console_sem+0xb4/0xfc [ 85.947412][ T5438] hardirqs last disabled at (79934): [] el1_dbg+0x24/0x80 [ 85.948841][ T5438] softirqs last enabled at (79914): [] handle_softirqs+0xa40/0xbe4 [ 85.950456][ T5438] softirqs last disabled at (79893): [] __irq_exit_rcu+0x240/0x43c [ 85.952087][ T5438] ---[ end trace 11760cd20ce9d7ee ]--- [ 85.954640][ T5438] BTRFS: error (device loop0) in btrfs_add_link:6776: errno=-12 Out of memory [ 86.086030][ T5460] loop0: detected capacity change from 0 to 32768 [ 86.175675][ T5460] BTRFS: device fsid ed167579-eb65-4e76-9a50-61ac97e9b59d devid 1 transid 8 /dev/loop0 scanned by syz.0.39 (5460) [ 86.191631][ T5460] FAULT_INJECTION: forcing a failure. [ 86.191631][ T5460] name failslab, interval 1, probability 0, space 0, times 0 [ 86.193955][ T5460] CPU: 0 PID: 5460 Comm: syz.0.39 Tainted: G W syzkaller #0 [ 86.195358][ T5460] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/18/2026 [ 86.196985][ T5460] Call trace: [ 86.197492][ T5460] dump_backtrace+0x0/0x458 [ 86.198221][ T5460] show_stack+0x2c/0x3c [ 86.198926][ T5460] __dump_stack+0x30/0x40 [ 86.199693][ T5460] dump_stack_lvl+0xf4/0x15c [ 86.200446][ T5460] dump_stack+0x1c/0x5c [ 86.201177][ T5460] should_fail+0x3bc/0x514 [ 86.201905][ T5460] __should_failslab+0xbc/0x10c [ 86.202717][ T5460] should_failslab+0x10/0x28 [ 86.203492][ T5460] slab_pre_alloc_hook+0x64/0xe8 [ 86.204272][ T5460] kmem_cache_alloc+0x94/0x3d4 [ 86.205008][ T5460] btrfs_get_or_create_delayed_node+0x114/0x4a8 [ 86.206085][ T5460] btrfs_delayed_update_inode+0x3c/0x1b68 [ 86.207037][ T5460] btrfs_update_inode+0x210/0x3d4 [ 86.207870][ T5460] btrfs_create+0x364/0x514 [ 86.208599][ T5460] path_openat+0xe18/0x2718 [ 86.209289][ T5460] do_filp_open+0x184/0x368 [ 86.210050][ T5460] do_sys_openat2+0x134/0x3f4 [ 86.210856][ T5460] __arm64_sys_openat+0x118/0x14c [ 86.211676][ T5460] invoke_syscall+0x98/0x2b0 [ 86.212450][ T5460] el0_svc_common+0x138/0x258 [ 86.213204][ T5460] do_el0_svc+0x58/0x13c [ 86.213913][ T5460] el0_svc+0x78/0x1d0 [ 86.214552][ T5460] el0t_64_sync_handler+0xcc/0xe4 [ 86.215373][ T5460] el0t_64_sync+0x1a0/0x1a4 [ 86.363070][ T5482] loop0: detected capacity change from 0 to 32768 [ 86.413144][ T5482] BTRFS: device fsid ed167579-eb65-4e76-9a50-61ac97e9b59d devid 1 transid 8 /dev/loop0 scanned by syz.0.40 (5482) [ 86.482821][ T5482] FAULT_INJECTION: forcing a failure. [ 86.482821][ T5482] name failslab, interval 1, probability 0, space 0, times 0 [ 86.484959][ T5482] CPU: 0 PID: 5482 Comm: syz.0.40 Tainted: G W syzkaller #0 [ 86.486461][ T5482] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/18/2026 [ 86.488205][ T5482] Call trace: [ 86.488785][ T5482] dump_backtrace+0x0/0x458 [ 86.489538][ T5482] show_stack+0x2c/0x3c [ 86.490226][ T5482] __dump_stack+0x30/0x40 [ 86.490944][ T5482] dump_stack_lvl+0xf4/0x15c [ 86.491679][ T5482] dump_stack+0x1c/0x5c [ 86.492367][ T5482] should_fail+0x3bc/0x514 [ 86.493157][ T5482] __should_failslab+0xbc/0x10c [ 86.494010][ T5482] should_failslab+0x10/0x28 [ 86.494765][ T5482] slab_pre_alloc_hook+0x64/0xe8 [ 86.495640][ T5482] kmem_cache_alloc+0x94/0x3d4 [ 86.496438][ T5482] btrfs_alloc_path+0x5c/0x68 [ 86.497193][ T5482] btrfs_insert_dir_item+0x184/0x3e8 [ 86.498056][ T5482] btrfs_add_link+0x2b0/0xa9c [ 86.498801][ T5482] btrfs_create+0x468/0x514 [ 86.499515][ T5482] path_openat+0xe18/0x2718 [ 86.500234][ T5482] do_filp_open+0x184/0x368 [ 86.501055][ T5482] do_sys_openat2+0x134/0x3f4 [ 86.501843][ T5482] __arm64_sys_openat+0x118/0x14c [ 86.502708][ T5482] invoke_syscall+0x98/0x2b0 [ 86.503454][ T5482] el0_svc_common+0x138/0x258 [ 86.504201][ T5482] do_el0_svc+0x58/0x13c [ 86.504915][ T5482] el0_svc+0x78/0x1d0 [ 86.505594][ T5482] el0t_64_sync_handler+0xcc/0xe4 [ 86.506401][ T5482] el0t_64_sync+0x1a0/0x1a4 [ 86.509470][ T5482] ------------[ cut here ]------------ [ 86.510513][ T5482] WARNING: CPU: 0 PID: 5482 at fs/btrfs/inode.c:6776 btrfs_add_link+0x718/0xa9c [ 86.511941][ T5482] Modules linked in: [ 86.512573][ T5482] CPU: 0 PID: 5482 Comm: syz.0.40 Tainted: G W syzkaller #0 [ 86.514049][ T5482] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/18/2026 [ 86.515721][ T5482] pstate: 62400005 (nZCv daif +PAN -UAO +TCO -DIT -SSBS BTYPE=--) [ 86.516977][ T5482] pc : btrfs_add_link+0x718/0xa9c [ 86.517810][ T5482] lr : btrfs_add_link+0x718/0xa9c [ 86.518614][ T5482] sp : ffff800021747580 [ 86.519293][ T5482] x29: ffff800021747680 x28: ffff0000ded9f6e0 x27: 0000000000000108 [ 86.520534][ T5482] x26: 00000000fffffff4 x25: 0000000000000000 x24: dfff800000000000 [ 86.521774][ T5482] x23: 0000000000000014 x22: 1fffe0001bdb3ee7 x21: ffff7000042e8eb8 [ 86.522999][ T5482] x20: 00000000fffffff4 x19: ffff0000ded9f738 x18: 0000000000000001 [ 86.524322][ T5482] x17: 0000000000000000 x16: ffff80001125f77c x15: 00000000ffffffff [ 86.525564][ T5482] x14: 0000000000000001 x13: 1fffe000341f05ab x12: 0000000000ff0100 [ 86.526932][ T5482] x11: 0000000000000000 x10: 0000000000000000 x9 : 74efec9795d8fe00 [ 86.528180][ T5482] x8 : 74efec9795d8fe00 x7 : 0000000000000001 x6 : 0000000000000001 [ 86.529409][ T5482] x5 : ffff800021746e98 x4 : ffff80001437f3e0 x3 : ffff80000850932c [ 86.530745][ T5482] x2 : 0000000000000001 x1 : 0000000100000000 x0 : 0000000000000026 [ 86.532077][ T5482] Call trace: [ 86.532591][ T5482] btrfs_add_link+0x718/0xa9c [ 86.533352][ T5482] btrfs_create+0x468/0x514 [ 86.534102][ T5482] path_openat+0xe18/0x2718 [ 86.534896][ T5482] do_filp_open+0x184/0x368 [ 86.535637][ T5482] do_sys_openat2+0x134/0x3f4 [ 86.536389][ T5482] __arm64_sys_openat+0x118/0x14c [ 86.537207][ T5482] invoke_syscall+0x98/0x2b0 [ 86.537974][ T5482] el0_svc_common+0x138/0x258 [ 86.538768][ T5482] do_el0_svc+0x58/0x13c [ 86.539506][ T5482] el0_svc+0x78/0x1d0 [ 86.540187][ T5482] el0t_64_sync_handler+0xcc/0xe4 [ 86.541060][ T5482] el0t_64_sync+0x1a0/0x1a4 [ 86.541826][ T5482] irq event stamp: 79756 [ 86.542556][ T5482] hardirqs last enabled at (79755): [] __up_console_sem+0xb4/0xfc [ 86.544138][ T5482] hardirqs last disabled at (79756): [] el1_dbg+0x24/0x80 [ 86.545614][ T5482] softirqs last enabled at (79736): [] handle_softirqs+0xa40/0xbe4 [ 86.547264][ T5482] softirqs last disabled at (79699): [] __irq_exit_rcu+0x240/0x43c [ 86.548927][ T5482] ---[ end trace 11760cd20ce9d7ef ]--- [ 86.553153][ T5482] BTRFS: error (device loop0) in btrfs_add_link:6776: errno=-12 Out of memory [ 86.587957][ T4930] BTRFS: device fsid ed167579-eb65-4e76-9a50-61ac97e9b59d devid 1 transid 10 /dev/loop0 scanned by udevd (4930) [ 86.686476][ T5504] loop0: detected capacity change from 0 to 32768 [ 86.771203][ T5504] FAULT_INJECTION: forcing a failure. [ 86.771203][ T5504] name failslab, interval 1, probability 0, space 0, times 0 [ 86.773430][ T5504] CPU: 1 PID: 5504 Comm: syz.0.41 Tainted: G W syzkaller #0 [ 86.774818][ T5504] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/18/2026 [ 86.776559][ T5504] Call trace: [ 86.777085][ T5504] dump_backtrace+0x0/0x458 [ 86.777780][ T5504] show_stack+0x2c/0x3c [ 86.778474][ T5504] __dump_stack+0x30/0x40 [ 86.779156][ T5504] dump_stack_lvl+0xf4/0x15c [ 86.779931][ T5504] dump_stack+0x1c/0x5c [ 86.780604][ T5504] should_fail+0x3bc/0x514 [ 86.781290][ T5504] __should_failslab+0xbc/0x10c [ 86.782049][ T5504] should_failslab+0x10/0x28 [ 86.782742][ T5504] slab_pre_alloc_hook+0x64/0xe8 [ 86.783571][ T5504] kmem_cache_alloc+0x94/0x3d4 [ 86.784352][ T5504] btrfs_alloc_path+0x5c/0x68 [ 86.785139][ T5504] btrfs_insert_dir_item+0x184/0x3e8 [ 86.786097][ T5504] btrfs_add_link+0x2b0/0xa9c [ 86.786840][ T5504] btrfs_create+0x468/0x514 [ 86.787591][ T5504] path_openat+0xe18/0x2718 [ 86.788308][ T5504] do_filp_open+0x184/0x368 [ 86.789063][ T5504] do_sys_openat2+0x134/0x3f4 [ 86.789838][ T5504] __arm64_sys_openat+0x118/0x14c [ 86.790723][ T5504] invoke_syscall+0x98/0x2b0 [ 86.791493][ T5504] el0_svc_common+0x138/0x258 [ 86.792238][ T5504] do_el0_svc+0x58/0x13c [ 86.792907][ T5504] el0_svc+0x78/0x1d0 [ 86.793581][ T5504] el0t_64_sync_handler+0xcc/0xe4 [ 86.794361][ T5504] el0t_64_sync+0x1a0/0x1a4 [ 86.796149][ T5504] ------------[ cut here ]------------ [ 86.797055][ T5504] WARNING: CPU: 1 PID: 5504 at fs/btrfs/inode.c:6776 btrfs_add_link+0x718/0xa9c [ 86.798569][ T5504] Modules linked in: [ 86.799216][ T5504] CPU: 1 PID: 5504 Comm: syz.0.41 Tainted: G W syzkaller #0 [ 86.800541][ T5504] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/18/2026 [ 86.802227][ T5504] pstate: 62400005 (nZCv daif +PAN -UAO +TCO -DIT -SSBS BTYPE=--) [ 86.803586][ T5504] pc : btrfs_add_link+0x718/0xa9c [ 86.804444][ T5504] lr : btrfs_add_link+0x718/0xa9c [ 86.805276][ T5504] sp : ffff800021f87580 [ 86.806001][ T5504] x29: ffff800021f87680 x28: ffff0000c066d6e0 x27: 0000000000000108 [ 86.807340][ T5504] x26: 00000000fffffff4 x25: 0000000000000000 x24: dfff800000000000 [ 86.808705][ T5504] x23: 0000000000000014 x22: 1fffe000180cdae7 x21: ffff7000043f0eb8 [ 86.810069][ T5504] x20: 00000000fffffff4 x19: ffff0000c066d738 x18: 0000000000000001 [ 86.811411][ T5504] x17: 0000000000000000 x16: ffff80001125f77c x15: 00000000ffffffff [ 86.812779][ T5504] x14: 0000000000000001 x13: 1fffe000341f47ab x12: 0000000000ff0100 [ 86.814171][ T5504] x11: 0000000000000000 x10: 0000000000000000 x9 : db3cbee99e30c600 [ 86.815539][ T5504] x8 : db3cbee99e30c600 x7 : 0000000000000001 x6 : 0000000000000001 [ 86.816858][ T5504] x5 : ffff800021f86e98 x4 : ffff80001437f3e0 x3 : ffff80000850932c [ 86.818178][ T5504] x2 : 0000000000000001 x1 : 0000000100000000 x0 : 0000000000000026 [ 86.819521][ T5504] Call trace: [ 86.820064][ T5504] btrfs_add_link+0x718/0xa9c [ 86.820862][ T5504] btrfs_create+0x468/0x514 [ 86.821632][ T5504] path_openat+0xe18/0x2718 [ 86.822389][ T5504] do_filp_open+0x184/0x368 [ 86.823135][ T5504] do_sys_openat2+0x134/0x3f4 [ 86.823887][ T5504] __arm64_sys_openat+0x118/0x14c [ 86.824692][ T5504] invoke_syscall+0x98/0x2b0 [ 86.825427][ T5504] el0_svc_common+0x138/0x258 [ 86.826202][ T5504] do_el0_svc+0x58/0x13c [ 86.826923][ T5504] el0_svc+0x78/0x1d0 [ 86.827569][ T5504] el0t_64_sync_handler+0xcc/0xe4 [ 86.828423][ T5504] el0t_64_sync+0x1a0/0x1a4 [ 86.829082][ T5504] irq event stamp: 80370 [ 86.829741][ T5504] hardirqs last enabled at (80369): [] __up_console_sem+0xb4/0xfc [ 86.831270][ T5504] hardirqs last disabled at (80370): [] el1_dbg+0x24/0x80 [ 86.832715][ T5504] softirqs last enabled at (80350): [] handle_softirqs+0xa40/0xbe4 [ 86.834321][ T5504] softirqs last disabled at (80295): [] __irq_exit_rcu+0x240/0x43c [ 86.835914][ T5504] ---[ end trace 11760cd20ce9d7f0 ]--- [ 86.837795][ T5504] BTRFS: error (device loop0) in btrfs_add_link:6776: errno=-12 Out of memory [ 87.090524][ T5527] BTRFS: device fsid ed167579-eb65-4e76-9a50-61ac97e9b59d devid 1 transid 8 /dev/loop0 scanned by syz.0.42 (5527) [ 87.109638][ T5527] FAULT_INJECTION: forcing a failure. [ 87.109638][ T5527] name failslab, interval 1, probability 0, space 0, times 0 [ 87.111698][ T5527] CPU: 0 PID: 5527 Comm: syz.0.42 Tainted: G W syzkaller #0 [ 87.113214][ T5527] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/18/2026 [ 87.115009][ T5527] Call trace: [ 87.115569][ T5527] dump_backtrace+0x0/0x458 [ 87.116366][ T5527] show_stack+0x2c/0x3c [ 87.117057][ T5527] __dump_stack+0x30/0x40 [ 87.117842][ T5527] dump_stack_lvl+0xf4/0x15c [ 87.118616][ T5527] dump_stack+0x1c/0x5c [ 87.119355][ T5527] should_fail+0x3bc/0x514 [ 87.120077][ T5527] __should_failslab+0xbc/0x10c [ 87.120873][ T5527] should_failslab+0x10/0x28 [ 87.121670][ T5527] slab_pre_alloc_hook+0x64/0xe8 [ 87.122485][ T5527] kmem_cache_alloc+0x94/0x3d4 [ 87.123265][ T5527] btrfs_alloc_path+0x5c/0x68 [ 87.124051][ T5527] btrfs_insert_dir_item+0x184/0x3e8 [ 87.124952][ T5527] btrfs_add_link+0x2b0/0xa9c [ 87.125709][ T5527] btrfs_create+0x468/0x514 [ 87.126498][ T5527] path_openat+0xe18/0x2718 [ 87.127293][ T5527] do_filp_open+0x184/0x368 [ 87.128033][ T5527] do_sys_openat2+0x134/0x3f4 [ 87.128763][ T5527] __arm64_sys_openat+0x118/0x14c [ 87.129548][ T5527] invoke_syscall+0x98/0x2b0 [ 87.130326][ T5527] el0_svc_common+0x138/0x258 [ 87.131067][ T5527] do_el0_svc+0x58/0x13c [ 87.131758][ T5527] el0_svc+0x78/0x1d0 [ 87.132427][ T5527] el0t_64_sync_handler+0xcc/0xe4 [ 87.133282][ T5527] el0t_64_sync+0x1a0/0x1a4 [ 87.135662][ T5527] ------------[ cut here ]------------ [ 87.136634][ T5527] WARNING: CPU: 0 PID: 5527 at fs/btrfs/inode.c:6776 btrfs_add_link+0x718/0xa9c [ 87.138087][ T5527] Modules linked in: [ 87.138661][ T5527] CPU: 0 PID: 5527 Comm: syz.0.42 Tainted: G W syzkaller #0 [ 87.140004][ T5527] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/18/2026 [ 87.141723][ T5527] pstate: 62400005 (nZCv daif +PAN -UAO +TCO -DIT -SSBS BTYPE=--) [ 87.143086][ T5527] pc : btrfs_add_link+0x718/0xa9c [ 87.143930][ T5527] lr : btrfs_add_link+0x718/0xa9c [ 87.144769][ T5527] sp : ffff800021f87580 [ 87.145455][ T5527] x29: ffff800021f87680 x28: ffff0000ded9f420 x27: 0000000000000108 [ 87.146762][ T5527] x26: 00000000fffffff4 x25: 0000000000000000 x24: dfff800000000000 [ 87.148113][ T5527] x23: 0000000000000014 x22: 1fffe0001bdb3e8f x21: ffff7000043f0eb8 [ 87.149494][ T5527] x20: 00000000fffffff4 x19: ffff0000ded9f478 x18: 0000000000000001 [ 87.150831][ T5527] x17: 0000000000000000 x16: ffff80001125f77c x15: 00000000ffffffff [ 87.152198][ T5527] x14: 0000000000000001 x13: 1fffe000341f05ab x12: 0000000000ff0100 [ 87.153459][ T5527] x11: 0000000000000000 x10: 0000000000000000 x9 : 1d994d939b347a00 [ 87.154840][ T5527] x8 : 1d994d939b347a00 x7 : 0000000000000001 x6 : 0000000000000001 [ 87.156227][ T5527] x5 : ffff800021f86e98 x4 : ffff80001437f3e0 x3 : ffff80000850932c [ 87.157585][ T5527] x2 : 0000000000000001 x1 : 0000000100000000 x0 : 0000000000000026 [ 87.158809][ T5527] Call trace: [ 87.159344][ T5527] btrfs_add_link+0x718/0xa9c [ 87.160119][ T5527] btrfs_create+0x468/0x514 [ 87.160890][ T5527] path_openat+0xe18/0x2718 [ 87.161674][ T5527] do_filp_open+0x184/0x368 [ 87.162405][ T5527] do_sys_openat2+0x134/0x3f4 [ 87.163178][ T5527] __arm64_sys_openat+0x118/0x14c [ 87.163979][ T5527] invoke_syscall+0x98/0x2b0 [ 87.164717][ T5527] el0_svc_common+0x138/0x258 [ 87.165518][ T5527] do_el0_svc+0x58/0x13c [ 87.166224][ T5527] el0_svc+0x78/0x1d0 [ 87.166867][ T5527] el0t_64_sync_handler+0xcc/0xe4 [ 87.167706][ T5527] el0t_64_sync+0x1a0/0x1a4 [ 87.168427][ T5527] irq event stamp: 79692 [ 87.169116][ T5527] hardirqs last enabled at (79691): [] __up_console_sem+0xb4/0xfc [ 87.170735][ T5527] hardirqs last disabled at (79692): [] el1_dbg+0x24/0x80 [ 87.172074][ T5527] softirqs last enabled at (79672): [] handle_softirqs+0xa40/0xbe4 [ 87.173662][ T5527] softirqs last disabled at (79653): [] __irq_exit_rcu+0x240/0x43c [ 87.175234][ T5527] ---[ end trace 11760cd20ce9d7f1 ]--- [ 87.178247][ T5527] BTRFS: error (device loop0) in btrfs_add_link:6776: errno=-12 Out of memory [ 87.394363][ T5549] BTRFS: device fsid ed167579-eb65-4e76-9a50-61ac97e9b59d devid 1 transid 8 /dev/loop0 scanned by syz.0.43 (5549) [ 87.412066][ T5549] FAULT_INJECTION: forcing a failure. [ 87.412066][ T5549] name failslab, interval 1, probability 0, space 0, times 0 [ 87.414127][ T5549] CPU: 0 PID: 5549 Comm: syz.0.43 Tainted: G W syzkaller #0 [ 87.415501][ T5549] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/18/2026 [ 87.417142][ T5549] Call trace: [ 87.417698][ T5549] dump_backtrace+0x0/0x458 [ 87.418435][ T5549] show_stack+0x2c/0x3c [ 87.419156][ T5549] __dump_stack+0x30/0x40 [ 87.419846][ T5549] dump_stack_lvl+0xf4/0x15c [ 87.420606][ T5549] dump_stack+0x1c/0x5c [ 87.421353][ T5549] should_fail+0x3bc/0x514 [ 87.422130][ T5549] __should_failslab+0xbc/0x10c [ 87.422937][ T5549] should_failslab+0x10/0x28 [ 87.423710][ T5549] slab_pre_alloc_hook+0x64/0xe8 [ 87.424476][ T5549] kmem_cache_alloc+0x94/0x3d4 [ 87.425261][ T5549] btrfs_get_or_create_delayed_node+0x114/0x4a8 [ 87.426417][ T5549] btrfs_delayed_update_inode+0x3c/0x1b68 [ 87.427406][ T5549] btrfs_update_inode+0x210/0x3d4 [ 87.428228][ T5549] btrfs_create+0x364/0x514 [ 87.428977][ T5549] path_openat+0xe18/0x2718 [ 87.429752][ T5549] do_filp_open+0x184/0x368 [ 87.430560][ T5549] do_sys_openat2+0x134/0x3f4 [ 87.431346][ T5549] __arm64_sys_openat+0x118/0x14c [ 87.432203][ T5549] invoke_syscall+0x98/0x2b0 [ 87.432996][ T5549] el0_svc_common+0x138/0x258 [ 87.433812][ T5549] do_el0_svc+0x58/0x13c [ 87.434515][ T5549] el0_svc+0x78/0x1d0 [ 87.435152][ T5549] el0t_64_sync_handler+0xcc/0xe4 [ 87.436027][ T5549] el0t_64_sync+0x1a0/0x1a4 [ 87.579613][ T5571] BTRFS: device fsid ed167579-eb65-4e76-9a50-61ac97e9b59d devid 1 transid 8 /dev/loop0 scanned by syz.0.44 (5571) [ 87.607295][ T5571] FAULT_INJECTION: forcing a failure. [ 87.607295][ T5571] name failslab, interval 1, probability 0, space 0, times 0 [ 87.609478][ T5571] CPU: 0 PID: 5571 Comm: syz.0.44 Tainted: G W syzkaller #0 [ 87.610956][ T5571] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/18/2026 [ 87.612692][ T5571] Call trace: [ 87.613258][ T5571] dump_backtrace+0x0/0x458 [ 87.614124][ T5571] show_stack+0x2c/0x3c [ 87.614840][ T5571] __dump_stack+0x30/0x40 [ 87.615557][ T5571] dump_stack_lvl+0xf4/0x15c [ 87.616316][ T5571] dump_stack+0x1c/0x5c [ 87.617092][ T5571] should_fail+0x3bc/0x514 [ 87.617887][ T5571] __should_failslab+0xbc/0x10c [ 87.618738][ T5571] should_failslab+0x10/0x28 [ 87.619505][ T5571] slab_pre_alloc_hook+0x64/0xe8 [ 87.620372][ T5571] kmem_cache_alloc+0x94/0x3d4 [ 87.621169][ T5571] btrfs_alloc_path+0x5c/0x68 [ 87.621950][ T5571] btrfs_insert_dir_item+0x184/0x3e8 [ 87.622767][ T5571] btrfs_add_link+0x2b0/0xa9c [ 87.623541][ T5571] btrfs_create+0x468/0x514 [ 87.624303][ T5571] path_openat+0xe18/0x2718 [ 87.625025][ T5571] do_filp_open+0x184/0x368 [ 87.625781][ T5571] do_sys_openat2+0x134/0x3f4 [ 87.626546][ T5571] __arm64_sys_openat+0x118/0x14c [ 87.627536][ T5571] invoke_syscall+0x98/0x2b0 [ 87.628313][ T5571] el0_svc_common+0x138/0x258 [ 87.629089][ T5571] do_el0_svc+0x58/0x13c [ 87.629849][ T5571] el0_svc+0x78/0x1d0 [ 87.630526][ T5571] el0t_64_sync_handler+0xcc/0xe4 [ 87.631304][ T5571] el0t_64_sync+0x1a0/0x1a4 [ 87.633712][ T5571] ------------[ cut here ]------------ [ 87.634661][ T5571] WARNING: CPU: 0 PID: 5571 at fs/btrfs/inode.c:6776 btrfs_add_link+0x718/0xa9c [ 87.636032][ T5571] Modules linked in: [ 87.636646][ T5571] CPU: 0 PID: 5571 Comm: syz.0.44 Tainted: G W syzkaller #0 [ 87.638067][ T5571] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/18/2026 [ 87.639748][ T5571] pstate: 62400005 (nZCv daif +PAN -UAO +TCO -DIT -SSBS BTYPE=--) [ 87.640992][ T5571] pc : btrfs_add_link+0x718/0xa9c [ 87.641791][ T5571] lr : btrfs_add_link+0x718/0xa9c [ 87.642626][ T5571] sp : ffff8000223b7580 [ 87.643331][ T5571] x29: ffff8000223b7680 x28: ffff0000def828f0 x27: 0000000000000108 [ 87.644731][ T5571] x26: 00000000fffffff4 x25: 0000000000000000 x24: dfff800000000000 [ 87.646103][ T5571] x23: 0000000000000014 x22: 1fffe0001bdf0529 x21: ffff700004476eb8 [ 87.647488][ T5571] x20: 00000000fffffff4 x19: ffff0000def82948 x18: 0000000000000001 [ 87.648846][ T5571] x17: 0000000000000000 x16: ffff80001125f77c x15: 00000000ffffffff [ 87.650185][ T5571] x14: 0000000000000001 x13: 1fffe000341f05ab x12: 0000000000ff0100 [ 87.651554][ T5571] x11: 0000000000000000 x10: 0000000000000000 x9 : 445fe676ccd0f300 [ 87.652894][ T5571] x8 : 445fe676ccd0f300 x7 : 0000000000000001 x6 : 0000000000000001 [ 87.654201][ T5571] x5 : ffff8000223b6e98 x4 : ffff80001437f3e0 x3 : ffff80000850932c [ 87.655594][ T5571] x2 : 0000000000000001 x1 : 0000000100000000 x0 : 0000000000000026 [ 87.656938][ T5571] Call trace: [ 87.657476][ T5571] btrfs_add_link+0x718/0xa9c [ 87.658233][ T5571] btrfs_create+0x468/0x514 [ 87.658978][ T5571] path_openat+0xe18/0x2718 [ 87.659735][ T5571] do_filp_open+0x184/0x368 [ 87.660495][ T5571] do_sys_openat2+0x134/0x3f4 [ 87.661329][ T5571] __arm64_sys_openat+0x118/0x14c [ 87.662199][ T5571] invoke_syscall+0x98/0x2b0 [ 87.662968][ T5571] el0_svc_common+0x138/0x258 [ 87.663805][ T5571] do_el0_svc+0x58/0x13c [ 87.664547][ T5571] el0_svc+0x78/0x1d0 [ 87.665233][ T5571] el0t_64_sync_handler+0xcc/0xe4 [ 87.666072][ T5571] el0t_64_sync+0x1a0/0x1a4 [ 87.666841][ T5571] irq event stamp: 79630 [ 87.667550][ T5571] hardirqs last enabled at (79629): [] __up_console_sem+0xb4/0xfc [ 87.669107][ T5571] hardirqs last disabled at (79630): [] el1_dbg+0x24/0x80 [ 87.670463][ T5571] softirqs last enabled at (79610): [] handle_softirqs+0xa40/0xbe4 [ 87.672072][ T5571] softirqs last disabled at (79507): [] __irq_exit_rcu+0x240/0x43c [ 87.673669][ T5571] ---[ end trace 11760cd20ce9d7f2 ]--- [ 87.676392][ T5571] BTRFS: error (device loop0) in btrfs_add_link:6776: errno=-12 Out of memory [ 87.916253][ T5592] BTRFS: device fsid ed167579-eb65-4e76-9a50-61ac97e9b59d devid 1 transid 8 /dev/loop0 scanned by syz.0.45 (5592) [ 87.937215][ T5592] FAULT_INJECTION: forcing a failure. [ 87.937215][ T5592] name failslab, interval 1, probability 0, space 0, times 0 [ 87.939355][ T5592] CPU: 1 PID: 5592 Comm: syz.0.45 Tainted: G W syzkaller #0 [ 87.940734][ T5592] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/18/2026 [ 87.942465][ T5592] Call trace: [ 87.942997][ T5592] dump_backtrace+0x0/0x458 [ 87.943754][ T5592] show_stack+0x2c/0x3c [ 87.944471][ T5592] __dump_stack+0x30/0x40 [ 87.945232][ T5592] dump_stack_lvl+0xf4/0x15c [ 87.946010][ T5592] dump_stack+0x1c/0x5c [ 87.946708][ T5592] should_fail+0x3bc/0x514 [ 87.947455][ T5592] __should_failslab+0xbc/0x10c [ 87.948265][ T5592] should_failslab+0x10/0x28 [ 87.949016][ T5592] slab_pre_alloc_hook+0x64/0xe8 [ 87.949864][ T5592] kmem_cache_alloc+0x94/0x3d4 [ 87.950700][ T5592] btrfs_alloc_path+0x5c/0x68 [ 87.951509][ T5592] btrfs_insert_dir_item+0x184/0x3e8 [ 87.952416][ T5592] btrfs_add_link+0x2b0/0xa9c [ 87.953177][ T5592] btrfs_create+0x468/0x514 [ 87.953947][ T5592] path_openat+0xe18/0x2718 [ 87.954670][ T5592] do_filp_open+0x184/0x368 [ 87.955392][ T5592] do_sys_openat2+0x134/0x3f4 [ 87.956163][ T5592] __arm64_sys_openat+0x118/0x14c [ 87.956944][ T5592] invoke_syscall+0x98/0x2b0 [ 87.957688][ T5592] el0_svc_common+0x138/0x258 [ 87.958499][ T5592] do_el0_svc+0x58/0x13c [ 87.959218][ T5592] el0_svc+0x78/0x1d0 [ 87.959917][ T5592] el0t_64_sync_handler+0xcc/0xe4 [ 87.960760][ T5592] el0t_64_sync+0x1a0/0x1a4 [ 87.963260][ T5592] ------------[ cut here ]------------ [ 87.964240][ T5592] WARNING: CPU: 1 PID: 5592 at fs/btrfs/inode.c:6776 btrfs_add_link+0x718/0xa9c [ 87.965650][ T5592] Modules linked in: [ 87.966262][ T5592] CPU: 1 PID: 5592 Comm: syz.0.45 Tainted: G W syzkaller #0 [ 87.967707][ T5592] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/18/2026 [ 87.969363][ T5592] pstate: 62400005 (nZCv daif +PAN -UAO +TCO -DIT -SSBS BTYPE=--) [ 87.970661][ T5592] pc : btrfs_add_link+0x718/0xa9c [ 87.971477][ T5592] lr : btrfs_add_link+0x718/0xa9c [ 87.972315][ T5592] sp : ffff8000223b7580 [ 87.972989][ T5592] x29: ffff8000223b7680 x28: ffff0000c066d2c0 x27: 0000000000000108 [ 87.974365][ T5592] x26: 00000000fffffff4 x25: 0000000000000000 x24: dfff800000000000 [ 87.975747][ T5592] x23: 0000000000000014 x22: 1fffe000180cda63 x21: ffff700004476eb8 [ 87.977058][ T5592] x20: 00000000fffffff4 x19: ffff0000c066d318 x18: 0000000000000001 [ 87.978451][ T5592] x17: 0000000000000000 x16: ffff80001125f77c x15: 00000000ffffffff [ 87.979882][ T5592] x14: 0000000000000001 x13: 1fffe000341f47ab x12: 0000000000ff0100 [ 87.981242][ T5592] x11: 0000000000000000 x10: 0000000000000000 x9 : 444ce93c46efcf00 [ 87.982592][ T5592] x8 : 444ce93c46efcf00 x7 : 0000000000000001 x6 : 0000000000000001 [ 87.983883][ T5592] x5 : ffff8000223b6e98 x4 : ffff80001437f3e0 x3 : ffff80000850932c [ 87.985241][ T5592] x2 : 0000000000000001 x1 : 0000000100000000 x0 : 0000000000000026 [ 87.986610][ T5592] Call trace: [ 87.987156][ T5592] btrfs_add_link+0x718/0xa9c [ 87.987939][ T5592] btrfs_create+0x468/0x514 [ 87.988679][ T5592] path_openat+0xe18/0x2718 [ 87.989454][ T5592] do_filp_open+0x184/0x368 [ 87.990176][ T5592] do_sys_openat2+0x134/0x3f4 [ 87.990982][ T5592] __arm64_sys_openat+0x118/0x14c [ 87.991841][ T5592] invoke_syscall+0x98/0x2b0 [ 87.992589][ T5592] el0_svc_common+0x138/0x258 [ 87.993412][ T5592] do_el0_svc+0x58/0x13c [ 87.994098][ T5592] el0_svc+0x78/0x1d0 [ 87.994743][ T5592] el0t_64_sync_handler+0xcc/0xe4 [ 87.995550][ T5592] el0t_64_sync+0x1a0/0x1a4 [ 87.996330][ T5592] irq event stamp: 79924 [ 87.997051][ T5592] hardirqs last enabled at (79923): [] __up_console_sem+0xb4/0xfc [ 87.998637][ T5592] hardirqs last disabled at (79924): [] el1_dbg+0x24/0x80 [ 88.000018][ T5592] softirqs last enabled at (79904): [] handle_softirqs+0xa40/0xbe4 [ 88.001614][ T5592] softirqs last disabled at (79851): [] __irq_exit_rcu+0x240/0x43c [ 88.003221][ T5592] ---[ end trace 11760cd20ce9d7f3 ]--- [ 88.006292][ T5592] BTRFS: error (device loop0) in btrfs_add_link:6776: errno=-12 Out of memory [ 88.193105][ T5614] BTRFS: device fsid ed167579-eb65-4e76-9a50-61ac97e9b59d devid 1 transid 8 /dev/loop0 scanned by syz.0.46 (5614) [ 88.267140][ T5614] FAULT_INJECTION: forcing a failure. [ 88.267140][ T5614] name failslab, interval 1, probability 0, space 0, times 0 [ 88.269237][ T5614] CPU: 1 PID: 5614 Comm: syz.0.46 Tainted: G W syzkaller #0 [ 88.270700][ T5614] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/18/2026 [ 88.272306][ T5614] Call trace: [ 88.272879][ T5614] dump_backtrace+0x0/0x458 [ 88.273638][ T5614] show_stack+0x2c/0x3c [ 88.274317][ T5614] __dump_stack+0x30/0x40 [ 88.274998][ T5614] dump_stack_lvl+0xf4/0x15c [ 88.275774][ T5614] dump_stack+0x1c/0x5c [ 88.276429][ T5614] should_fail+0x3bc/0x514 [ 88.277155][ T5614] __should_failslab+0xbc/0x10c [ 88.278026][ T5614] should_failslab+0x10/0x28 [ 88.278795][ T5614] slab_pre_alloc_hook+0x64/0xe8 [ 88.279677][ T5614] kmem_cache_alloc+0x94/0x3d4 [ 88.280409][ T5614] btrfs_alloc_path+0x5c/0x68 [ 88.281201][ T5614] btrfs_insert_dir_item+0x184/0x3e8 [ 88.282037][ T5614] btrfs_add_link+0x2b0/0xa9c [ 88.282827][ T5614] btrfs_create+0x468/0x514 [ 88.283580][ T5614] path_openat+0xe18/0x2718 [ 88.284362][ T5614] do_filp_open+0x184/0x368 [ 88.285169][ T5614] do_sys_openat2+0x134/0x3f4 [ 88.286023][ T5614] __arm64_sys_openat+0x118/0x14c [ 88.286870][ T5614] invoke_syscall+0x98/0x2b0 [ 88.287619][ T5614] el0_svc_common+0x138/0x258 [ 88.288395][ T5614] do_el0_svc+0x58/0x13c [ 88.289135][ T5614] el0_svc+0x78/0x1d0 [ 88.289815][ T5614] el0t_64_sync_handler+0xcc/0xe4 [ 88.290687][ T5614] el0t_64_sync+0x1a0/0x1a4 [ 88.292203][ T5614] ------------[ cut here ]------------ [ 88.293171][ T5614] WARNING: CPU: 1 PID: 5614 at fs/btrfs/inode.c:6776 btrfs_add_link+0x718/0xa9c [ 88.294617][ T5614] Modules linked in: [ 88.295299][ T5614] CPU: 1 PID: 5614 Comm: syz.0.46 Tainted: G W syzkaller #0 [ 88.296689][ T5614] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/18/2026 [ 88.298243][ T5614] pstate: 62400005 (nZCv daif +PAN -UAO +TCO -DIT -SSBS BTYPE=--) [ 88.299556][ T5614] pc : btrfs_add_link+0x718/0xa9c [ 88.300321][ T5614] lr : btrfs_add_link+0x718/0xa9c [ 88.301156][ T5614] sp : ffff8000223b7580 [ 88.301852][ T5614] x29: ffff8000223b7680 x28: ffff0000c066d160 x27: 0000000000000108 [ 88.303253][ T5614] x26: 00000000fffffff4 x25: 0000000000000000 x24: dfff800000000000 [ 88.304686][ T5614] x23: 0000000000000014 x22: 1fffe000180cda37 x21: ffff700004476eb8 [ 88.306120][ T5614] x20: 00000000fffffff4 x19: ffff0000c066d1b8 x18: 0000000000000001 [ 88.307456][ T5614] x17: 0000000000000000 x16: ffff800008304c04 x15: 00000000ffffffff [ 88.308874][ T5614] x14: 0000000000000001 x13: 1ffff00004476dd0 x12: 0000000000ff0100 [ 88.310256][ T5614] x11: 0000000000000000 x10: 0000000000000000 x9 : b2549e3fce476c00 [ 88.311639][ T5614] x8 : b2549e3fce476c00 x7 : 0000000000000001 x6 : 0000000000000001 [ 88.313076][ T5614] x5 : ffff8000223b6e98 x4 : ffff80001437f3e0 x3 : ffff800008304d14 [ 88.314481][ T5614] x2 : 0000000000000001 x1 : 0000000100000000 x0 : 0000000000000026 [ 88.315889][ T5614] Call trace: [ 88.316434][ T5614] btrfs_add_link+0x718/0xa9c [ 88.317176][ T5614] btrfs_create+0x468/0x514 [ 88.317973][ T5614] path_openat+0xe18/0x2718 [ 88.318787][ T5614] do_filp_open+0x184/0x368 [ 88.319540][ T5614] do_sys_openat2+0x134/0x3f4 [ 88.320318][ T5614] __arm64_sys_openat+0x118/0x14c [ 88.321143][ T5614] invoke_syscall+0x98/0x2b0 [ 88.321879][ T5614] el0_svc_common+0x138/0x258 [ 88.322648][ T5614] do_el0_svc+0x58/0x13c [ 88.323339][ T5614] el0_svc+0x78/0x1d0 [ 88.324028][ T5614] el0t_64_sync_handler+0xcc/0xe4 [ 88.324863][ T5614] el0t_64_sync+0x1a0/0x1a4 [ 88.325602][ T5614] irq event stamp: 79942 [ 88.326241][ T5614] hardirqs last enabled at (79941): [] __up_console_sem+0xb4/0xfc [ 88.327711][ T5614] hardirqs last disabled at (79942): [] el1_dbg+0x24/0x80 [ 88.329073][ T5614] softirqs last enabled at (79922): [] handle_softirqs+0xa40/0xbe4 [ 88.330748][ T5614] softirqs last disabled at (79883): [] __irq_exit_rcu+0x240/0x43c [ 88.332328][ T5614] ---[ end trace 11760cd20ce9d7f4 ]--- [ 88.333587][ T5614] BTRFS: error (device loop0) in btrfs_add_link:6776: errno=-12 Out of memory [ 88.577122][ T5636] BTRFS: device fsid ed167579-eb65-4e76-9a50-61ac97e9b59d devid 1 transid 8 /dev/loop0 scanned by syz.0.47 (5636) [ 88.592915][ T5636] FAULT_INJECTION: forcing a failure. [ 88.592915][ T5636] name failslab, interval 1, probability 0, space 0, times 0 [ 88.595077][ T5636] CPU: 1 PID: 5636 Comm: syz.0.47 Tainted: G W syzkaller #0 [ 88.596534][ T5636] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/18/2026 [ 88.598273][ T5636] Call trace: [ 88.598818][ T5636] dump_backtrace+0x0/0x458 [ 88.599595][ T5636] show_stack+0x2c/0x3c [ 88.600258][ T5636] __dump_stack+0x30/0x40 [ 88.601010][ T5636] dump_stack_lvl+0xf4/0x15c [ 88.601733][ T5636] dump_stack+0x1c/0x5c [ 88.602417][ T5636] should_fail+0x3bc/0x514 [ 88.603118][ T5636] __should_failslab+0xbc/0x10c [ 88.603927][ T5636] should_failslab+0x10/0x28 [ 88.604654][ T5636] slab_pre_alloc_hook+0x64/0xe8 [ 88.605433][ T5636] kmem_cache_alloc+0x94/0x3d4 [ 88.606185][ T5636] btrfs_alloc_path+0x5c/0x68 [ 88.606975][ T5636] btrfs_insert_dir_item+0x184/0x3e8 [ 88.607873][ T5636] btrfs_add_link+0x2b0/0xa9c [ 88.608598][ T5636] btrfs_create+0x468/0x514 [ 88.609354][ T5636] path_openat+0xe18/0x2718 [ 88.610143][ T5636] do_filp_open+0x184/0x368 [ 88.610889][ T5636] do_sys_openat2+0x134/0x3f4 [ 88.611708][ T5636] __arm64_sys_openat+0x118/0x14c [ 88.612545][ T5636] invoke_syscall+0x98/0x2b0 [ 88.613289][ T5636] el0_svc_common+0x138/0x258 [ 88.614032][ T5636] do_el0_svc+0x58/0x13c [ 88.614677][ T5636] el0_svc+0x78/0x1d0 [ 88.615295][ T5636] el0t_64_sync_handler+0xcc/0xe4 [ 88.616096][ T5636] el0t_64_sync+0x1a0/0x1a4 [ 88.617797][ T5636] ------------[ cut here ]------------ [ 88.618737][ T5636] WARNING: CPU: 1 PID: 5636 at fs/btrfs/inode.c:6776 btrfs_add_link+0x718/0xa9c [ 88.620298][ T5636] Modules linked in: [ 88.620940][ T5636] CPU: 1 PID: 5636 Comm: syz.0.47 Tainted: G W syzkaller #0 [ 88.622359][ T5636] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/18/2026 [ 88.624013][ T5636] pstate: 62400005 (nZCv daif +PAN -UAO +TCO -DIT -SSBS BTYPE=--) [ 88.625291][ T5636] pc : btrfs_add_link+0x718/0xa9c [ 88.626107][ T5636] lr : btrfs_add_link+0x718/0xa9c [ 88.626857][ T5636] sp : ffff800022cf7580 [ 88.627486][ T5636] x29: ffff800022cf7680 x28: ffff0000c066de70 x27: 0000000000000108 [ 88.628793][ T5636] x26: 00000000fffffff4 x25: 0000000000000000 x24: dfff800000000000 [ 88.630039][ T5636] x23: 0000000000000014 x22: 1fffe000180cdbd9 x21: ffff70000459eeb8 [ 88.631300][ T5636] x20: 00000000fffffff4 x19: ffff0000c066dec8 x18: 0000000000000001 [ 88.632622][ T5636] x17: 0000000000000000 x16: ffff80001125f77c x15: 00000000ffffffff [ 88.633963][ T5636] x14: 0000000000000001 x13: 1fffe000341f47ab x12: 0000000000ff0100 [ 88.635303][ T5636] x11: 0000000000000000 x10: 0000000000000000 x9 : ffb6519c0af8a500 [ 88.636653][ T5636] x8 : ffb6519c0af8a500 x7 : 0000000000000001 x6 : 0000000000000001 [ 88.638019][ T5636] x5 : ffff800022cf6e98 x4 : ffff80001437f3e0 x3 : ffff80000850932c [ 88.639313][ T5636] x2 : 0000000000000001 x1 : 0000000100000000 x0 : 0000000000000026 [ 88.640627][ T5636] Call trace: [ 88.641165][ T5636] btrfs_add_link+0x718/0xa9c [ 88.641963][ T5636] btrfs_create+0x468/0x514 [ 88.642715][ T5636] path_openat+0xe18/0x2718 [ 88.643502][ T5636] do_filp_open+0x184/0x368 [ 88.644287][ T5636] do_sys_openat2+0x134/0x3f4 [ 88.645099][ T5636] __arm64_sys_openat+0x118/0x14c [ 88.645961][ T5636] invoke_syscall+0x98/0x2b0 [ 88.646692][ T5636] el0_svc_common+0x138/0x258 [ 88.647468][ T5636] do_el0_svc+0x58/0x13c [ 88.648163][ T5636] el0_svc+0x78/0x1d0 [ 88.648830][ T5636] el0t_64_sync_handler+0xcc/0xe4 [ 88.649713][ T5636] el0t_64_sync+0x1a0/0x1a4 [ 88.650401][ T5636] irq event stamp: 79820 [ 88.651076][ T5636] hardirqs last enabled at (79819): [] __up_console_sem+0xb4/0xfc [ 88.652680][ T5636] hardirqs last disabled at (79820): [] el1_dbg+0x24/0x80 [ 88.654164][ T5636] softirqs last enabled at (79800): [] handle_softirqs+0xa40/0xbe4 [ 88.655824][ T5636] softirqs last disabled at (79755): [] __irq_exit_rcu+0x240/0x43c [ 88.657340][ T5636] ---[ end trace 11760cd20ce9d7f5 ]--- [ 88.658534][ T5636] BTRFS: error (device loop0) in btrfs_add_link:6776: errno=-12 Out of memory [ 88.884849][ T5658] BTRFS: device fsid ed167579-eb65-4e76-9a50-61ac97e9b59d devid 1 transid 8 /dev/loop0 scanned by syz.0.48 (5658) [ 88.907329][ T5658] FAULT_INJECTION: forcing a failure. [ 88.907329][ T5658] name failslab, interval 1, probability 0, space 0, times 0 [ 88.909426][ T5658] CPU: 0 PID: 5658 Comm: syz.0.48 Tainted: G W syzkaller #0 [ 88.910778][ T5658] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/18/2026 [ 88.912441][ T5658] Call trace: [ 88.912976][ T5658] dump_backtrace+0x0/0x458 [ 88.913729][ T5658] show_stack+0x2c/0x3c [ 88.914394][ T5658] __dump_stack+0x30/0x40 [ 88.915071][ T5658] dump_stack_lvl+0xf4/0x15c [ 88.915806][ T5658] dump_stack+0x1c/0x5c [ 88.916512][ T5658] should_fail+0x3bc/0x514 [ 88.917270][ T5658] __should_failslab+0xbc/0x10c [ 88.918093][ T5658] should_failslab+0x10/0x28 [ 88.918840][ T5658] slab_pre_alloc_hook+0x64/0xe8 [ 88.919742][ T5658] kmem_cache_alloc+0x94/0x3d4 [ 88.920574][ T5658] btrfs_get_or_create_delayed_node+0x114/0x4a8 [ 88.921665][ T5658] btrfs_delayed_update_inode+0x3c/0x1b68 [ 88.922604][ T5658] btrfs_update_inode+0x210/0x3d4 [ 88.923444][ T5658] btrfs_create+0x364/0x514 [ 88.924193][ T5658] path_openat+0xe18/0x2718 [ 88.924992][ T5658] do_filp_open+0x184/0x368 [ 88.925737][ T5658] do_sys_openat2+0x134/0x3f4 [ 88.926553][ T5658] __arm64_sys_openat+0x118/0x14c [ 88.927372][ T5658] invoke_syscall+0x98/0x2b0 [ 88.928149][ T5658] el0_svc_common+0x138/0x258 [ 88.928959][ T5658] do_el0_svc+0x58/0x13c [ 88.929620][ T5658] el0_svc+0x78/0x1d0 [ 88.930316][ T5658] el0t_64_sync_handler+0xcc/0xe4 [ 88.931153][ T5658] el0t_64_sync+0x1a0/0x1a4 [ 88.986965][ T4930] BTRFS: device fsid ed167579-eb65-4e76-9a50-61ac97e9b59d devid 1 transid 12 /dev/loop0 scanned by udevd (4930) 1970/01/01 00:01:28 executed programs: 36