Warning: Permanently added '10.128.1.136' (ED25519) to the list of known hosts. 1970/01/01 00:01:06 parsed 1 programs [ 67.515214][ T4482] Adding 124996k swap on ./swap-file. Priority:0 extents:1 across:124996k SSFS [ 69.634270][ T7] cfg80211: failed to load regulatory.db [ 69.636073][ T2065] ieee802154 phy0 wpan0: encryption failed: -22 [ 69.637229][ T2065] ieee802154 phy1 wpan1: encryption failed: -22 [ 70.786174][ T4529] chnl_net:caif_netlink_parms(): no params data found [ 70.805307][ T4529] bridge0: port 1(bridge_slave_0) entered blocking state [ 70.806517][ T4529] bridge0: port 1(bridge_slave_0) entered disabled state [ 70.808114][ T4529] device bridge_slave_0 entered promiscuous mode [ 70.810305][ T4529] bridge0: port 2(bridge_slave_1) entered blocking state [ 70.811426][ T4529] bridge0: port 2(bridge_slave_1) entered disabled state [ 70.813039][ T4529] device bridge_slave_1 entered promiscuous mode [ 70.821547][ T4529] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 70.826510][ T4529] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 70.835604][ T4529] team0: Port device team_slave_0 added [ 70.837460][ T4529] team0: Port device team_slave_1 added [ 70.844583][ T4529] batman_adv: batadv0: Adding interface: batadv_slave_0 [ 70.845653][ T4529] 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. [ 70.849648][ T4529] batman_adv: batadv0: Not using interface batadv_slave_0 (retrying later): interface not active [ 70.852127][ T4529] batman_adv: batadv0: Adding interface: batadv_slave_1 [ 70.853368][ T4529] 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. [ 70.857586][ T4529] batman_adv: batadv0: Not using interface batadv_slave_1 (retrying later): interface not active [ 70.914097][ T4529] device hsr_slave_0 entered promiscuous mode [ 70.953404][ T4529] device hsr_slave_1 entered promiscuous mode [ 71.616378][ T4529] netdevsim netdevsim0 netdevsim0: renamed from eth0 [ 71.654616][ T4529] netdevsim netdevsim0 netdevsim1: renamed from eth1 [ 71.684337][ T4529] netdevsim netdevsim0 netdevsim2: renamed from eth2 [ 71.724564][ T4529] netdevsim netdevsim0 netdevsim3: renamed from eth3 [ 71.769466][ T4529] bridge0: port 2(bridge_slave_1) entered blocking state [ 71.770647][ T4529] bridge0: port 2(bridge_slave_1) entered forwarding state [ 71.771911][ T4529] bridge0: port 1(bridge_slave_0) entered blocking state [ 71.773162][ T4529] bridge0: port 1(bridge_slave_0) entered forwarding state [ 71.776117][ T1761] bridge0: port 1(bridge_slave_0) entered disabled state [ 71.777640][ T1761] bridge0: port 2(bridge_slave_1) entered disabled state [ 71.810755][ T4529] 8021q: adding VLAN 0 to HW filter on device bond0 [ 71.817729][ T1761] IPv6: ADDRCONF(NETDEV_CHANGE): veth1: link becomes ready [ 71.819249][ T1761] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 71.823923][ T4529] 8021q: adding VLAN 0 to HW filter on device team0 [ 71.826703][ T1643] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bridge: link becomes ready [ 71.828185][ T1643] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 71.829611][ T1643] bridge0: port 1(bridge_slave_0) entered blocking state [ 71.830787][ T1643] bridge0: port 1(bridge_slave_0) entered forwarding state [ 71.837020][ T1761] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bridge: link becomes ready [ 71.838654][ T1761] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 71.840054][ T1761] bridge0: port 2(bridge_slave_1) entered blocking state [ 71.841213][ T1761] bridge0: port 2(bridge_slave_1) entered forwarding state [ 71.844791][ T1643] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bond: link becomes ready [ 71.848116][ T1643] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bond: link becomes ready [ 71.851303][ T1761] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_team: link becomes ready [ 71.861645][ T1761] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 71.867448][ T1761] IPv6: ADDRCONF(NETDEV_CHANGE): team0: link becomes ready [ 71.869085][ T1761] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_team: link becomes ready [ 71.870726][ T1761] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 71.881409][ T1761] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_hsr: link becomes ready [ 71.883163][ T1761] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 71.884604][ T1761] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_hsr: link becomes ready [ 71.886061][ T1761] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 71.888220][ T4529] IPv6: ADDRCONF(NETDEV_CHANGE): hsr0: link becomes ready [ 71.962319][ T136] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan1: link becomes ready [ 71.967506][ T136] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan0: link becomes ready [ 71.971894][ T4529] 8021q: adding VLAN 0 to HW filter on device batadv0 [ 71.995458][ T136] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_virt_wifi: link becomes ready [ 71.997411][ T136] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_virt_wifi: link becomes ready [ 72.005683][ T136] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_vlan: link becomes ready [ 72.007338][ T136] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_vlan: link becomes ready [ 72.009428][ T136] IPv6: ADDRCONF(NETDEV_CHANGE): vlan0: link becomes ready [ 72.011082][ T136] IPv6: ADDRCONF(NETDEV_CHANGE): vlan1: link becomes ready [ 72.014432][ T4529] device veth0_vlan entered promiscuous mode [ 72.018922][ T4529] device veth1_vlan entered promiscuous mode [ 72.030564][ T136] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan0: link becomes ready [ 72.032120][ T136] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan1: link becomes ready [ 72.035070][ T136] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_macvtap: link becomes ready [ 72.036671][ T136] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_macvtap: link becomes ready [ 72.040109][ T4529] device veth0_macvtap entered promiscuous mode [ 72.043954][ T4529] device veth1_macvtap entered promiscuous mode [ 72.050056][ T4529] batman_adv: batadv0: Interface activated: batadv_slave_0 [ 72.051348][ T136] IPv6: ADDRCONF(NETDEV_CHANGE): macvtap0: link becomes ready [ 72.053565][ T136] IPv6: ADDRCONF(NETDEV_CHANGE): macsec0: link becomes ready [ 72.055009][ T136] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_0: link becomes ready [ 72.056583][ T136] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_batadv: link becomes ready [ 72.059788][ T4529] batman_adv: batadv0: Interface activated: batadv_slave_1 [ 72.061139][ T1761] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_1: link becomes ready [ 72.062702][ T1761] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_batadv: link becomes ready [ 72.066608][ T4529] netdevsim netdevsim0 netdevsim0: set [1, 0] type 2 family 0 port 6081 - 0 [ 72.068153][ T4529] netdevsim netdevsim0 netdevsim1: set [1, 0] type 2 family 0 port 6081 - 0 [ 72.069527][ T4529] netdevsim netdevsim0 netdevsim2: set [1, 0] type 2 family 0 port 6081 - 0 [ 72.070880][ T4529] netdevsim netdevsim0 netdevsim3: set [1, 0] type 2 family 0 port 6081 - 0 [ 72.252237][ T136] wlan0: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 72.254029][ T136] wlan0: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 72.255936][ T136] IPv6: ADDRCONF(NETDEV_CHANGE): wlan0: link becomes ready [ 72.275592][ T136] wlan1: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 72.276961][ T136] wlan1: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 72.278292][ T1761] IPv6: ADDRCONF(NETDEV_CHANGE): wlan1: link becomes ready 1970/01/01 00:01:12 executed programs: 0 [ 72.784705][ T4725] chnl_net:caif_netlink_parms(): no params data found [ 72.808051][ T4725] bridge0: port 1(bridge_slave_0) entered blocking state [ 72.809345][ T4725] bridge0: port 1(bridge_slave_0) entered disabled state [ 72.810826][ T4725] device bridge_slave_0 entered promiscuous mode [ 72.817333][ T4725] bridge0: port 2(bridge_slave_1) entered blocking state [ 72.818528][ T4725] bridge0: port 2(bridge_slave_1) entered disabled state [ 72.820471][ T4725] device bridge_slave_1 entered promiscuous mode [ 72.831256][ T4725] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 72.834300][ T4725] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 72.844726][ T4725] team0: Port device team_slave_0 added [ 72.846789][ T4725] team0: Port device team_slave_1 added [ 72.854098][ T4725] batman_adv: batadv0: Adding interface: batadv_slave_0 [ 72.855269][ T4725] 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. [ 72.859691][ T4725] batman_adv: batadv0: Not using interface batadv_slave_0 (retrying later): interface not active [ 72.862388][ T4725] batman_adv: batadv0: Adding interface: batadv_slave_1 [ 72.865479][ T4725] 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. [ 72.869550][ T4725] batman_adv: batadv0: Not using interface batadv_slave_1 (retrying later): interface not active [ 72.914380][ T4725] device hsr_slave_0 entered promiscuous mode [ 72.963014][ T4725] device hsr_slave_1 entered promiscuous mode [ 73.002825][ T4725] debugfs: Directory 'hsr0' with parent 'hsr' already present! [ 73.004002][ T4725] Cannot create hsr debugfs directory [ 73.056250][ T4725] netdevsim netdevsim0 netdevsim3 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 74.732959][ T4157] Bluetooth: hci0: command 0x0409 tx timeout [ 75.427314][ T4725] netdevsim netdevsim0 netdevsim2 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 76.813351][ T3624] Bluetooth: hci0: command 0x041b tx timeout [ 78.257234][ T4725] netdevsim netdevsim0 netdevsim1 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 78.308324][ T4725] netdevsim netdevsim0 netdevsim0 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 78.456768][ T4725] netdevsim netdevsim0 netdevsim0: renamed from eth0 [ 78.504786][ T4725] netdevsim netdevsim0 netdevsim1: renamed from eth1 [ 78.564238][ T4725] netdevsim netdevsim0 netdevsim2: renamed from eth2 [ 78.604346][ T4725] netdevsim netdevsim0 netdevsim3: renamed from eth3 [ 78.691509][ T4725] 8021q: adding VLAN 0 to HW filter on device bond0 [ 78.695521][ T1761] IPv6: ADDRCONF(NETDEV_CHANGE): veth1: link becomes ready [ 78.697099][ T1761] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 78.700097][ T4725] 8021q: adding VLAN 0 to HW filter on device team0 [ 78.706309][ T1761] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bridge: link becomes ready [ 78.707902][ T1761] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 78.709323][ T1761] bridge0: port 1(bridge_slave_0) entered blocking state [ 78.710498][ T1761] bridge0: port 1(bridge_slave_0) entered forwarding state [ 78.711914][ T1761] IPv6: ADDRCONF(NETDEV_CHANGE): bridge0: link becomes ready [ 78.723633][ T289] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bridge: link becomes ready [ 78.725207][ T289] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 78.726566][ T289] bridge0: port 2(bridge_slave_1) entered blocking state [ 78.727755][ T289] bridge0: port 2(bridge_slave_1) entered forwarding state [ 78.731176][ T1761] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bond: link becomes ready [ 78.734347][ T1761] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bond: link becomes ready [ 78.737341][ T1761] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_team: link becomes ready [ 78.739396][ T1761] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 78.741091][ T1761] IPv6: ADDRCONF(NETDEV_CHANGE): team0: link becomes ready [ 78.744792][ T289] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_team: link becomes ready [ 78.746602][ T289] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 78.749100][ T136] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_hsr: link becomes ready [ 78.750605][ T136] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 78.753575][ T1761] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_hsr: link becomes ready [ 78.755063][ T1761] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 78.757943][ T4725] IPv6: ADDRCONF(NETDEV_CHANGE): hsr0: link becomes ready [ 78.799617][ T1761] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan1: link becomes ready [ 78.800980][ T1761] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan0: link becomes ready [ 78.805211][ T4725] 8021q: adding VLAN 0 to HW filter on device batadv0 [ 78.812440][ T1761] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_virt_wifi: link becomes ready [ 78.814532][ T1761] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_virt_wifi: link becomes ready [ 78.820993][ T1761] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_vlan: link becomes ready [ 78.822487][ T1761] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_vlan: link becomes ready [ 78.824461][ T1761] IPv6: ADDRCONF(NETDEV_CHANGE): vlan0: link becomes ready [ 78.825822][ T1761] IPv6: ADDRCONF(NETDEV_CHANGE): vlan1: link becomes ready [ 78.828160][ T4725] device veth0_vlan entered promiscuous mode [ 78.831725][ T4725] device veth1_vlan entered promiscuous mode [ 78.840119][ T1761] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan0: link becomes ready [ 78.841537][ T1761] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan1: link becomes ready [ 78.843319][ T1761] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_macvtap: link becomes ready [ 78.844908][ T1761] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_macvtap: link becomes ready [ 78.847608][ T4725] device veth0_macvtap entered promiscuous mode [ 78.850069][ T4725] device veth1_macvtap entered promiscuous mode [ 78.855596][ T4725] batman_adv: The newly added mac address (aa:aa:aa:aa:aa:3e) already exists on: batadv_slave_0 [ 78.857292][ T4725] batman_adv: It is strongly recommended to keep mac addresses unique to avoid problems! [ 78.859427][ T4725] batman_adv: batadv0: Interface activated: batadv_slave_0 [ 78.860641][ T1761] IPv6: ADDRCONF(NETDEV_CHANGE): macvtap0: link becomes ready [ 78.862272][ T1761] IPv6: ADDRCONF(NETDEV_CHANGE): macsec0: link becomes ready [ 78.864313][ T1761] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_0: link becomes ready [ 78.865972][ T1761] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_batadv: link becomes ready [ 78.868496][ T4725] batman_adv: The newly added mac address (aa:aa:aa:aa:aa:3f) already exists on: batadv_slave_1 [ 78.870171][ T4725] batman_adv: It is strongly recommended to keep mac addresses unique to avoid problems! [ 78.872258][ T4725] batman_adv: batadv0: Interface activated: batadv_slave_1 [ 78.873768][ T1761] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_1: link becomes ready [ 78.875369][ T1761] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_batadv: link becomes ready [ 78.878068][ T4725] netdevsim netdevsim0 netdevsim0: set [1, 0] type 2 family 0 port 6081 - 0 [ 78.879323][ T4725] netdevsim netdevsim0 netdevsim1: set [1, 0] type 2 family 0 port 6081 - 0 [ 78.880606][ T4725] netdevsim netdevsim0 netdevsim2: set [1, 0] type 2 family 0 port 6081 - 0 [ 78.881920][ T4725] netdevsim netdevsim0 netdevsim3: set [1, 0] type 2 family 0 port 6081 - 0 [ 78.893773][ T4155] Bluetooth: hci0: command 0x040f tx timeout [ 78.907484][ T1761] wlan0: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 78.910061][ T1761] wlan0: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 78.911829][ T136] IPv6: ADDRCONF(NETDEV_CHANGE): wlan0: link becomes ready [ 78.918686][ T1761] wlan1: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 78.919988][ T1761] wlan1: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 78.921348][ T1761] IPv6: ADDRCONF(NETDEV_CHANGE): wlan1: link becomes ready 1970/01/01 00:01:18 executed programs: 2 [ 79.041997][ T4919] loop0: detected capacity change from 0 to 32768 [ 79.089026][ T4919] BTRFS: device fsid ed167579-eb65-4e76-9a50-61ac97e9b59d devid 1 transid 8 /dev/loop0 scanned by syz.0.16 (4919) [ 79.099761][ T4919] BTRFS info (device loop0): using sha256 (sha256-ce) checksum algorithm [ 79.101279][ T4919] BTRFS info (device loop0): metadata ratio 1025 [ 79.102395][ T4919] BTRFS info (device loop0): doing ref verification [ 79.103839][ T4919] BTRFS info (device loop0): force clearing of disk cache [ 79.104946][ T4919] BTRFS info (device loop0): turning off barriers [ 79.106054][ T4919] BTRFS info (device loop0): setting nodatacow, compression disabled [ 79.107347][ T4919] BTRFS info (device loop0): enabling ssd optimizations [ 79.108462][ T4919] BTRFS info (device loop0): using spread ssd allocation scheme [ 79.109741][ T4919] BTRFS info (device loop0): not using ssd optimizations [ 79.110905][ T4919] BTRFS info (device loop0): not using spread ssd allocation scheme [ 79.112301][ T4919] BTRFS info (device loop0): using free space tree [ 79.113574][ T4919] BTRFS info (device loop0): has skinny extents [ 79.129628][ T4919] BTRFS info (device loop0): clearing free space tree [ 79.130834][ T4919] BTRFS info (device loop0): clearing compat-ro feature flag for FREE_SPACE_TREE (0x1) [ 79.132500][ T4919] BTRFS info (device loop0): clearing compat-ro feature flag for FREE_SPACE_TREE_VALID (0x2) [ 79.147870][ T4919] BTRFS info (device loop0): creating free space tree [ 79.149855][ T4919] BTRFS info (device loop0): setting compat-ro feature flag for FREE_SPACE_TREE (0x1) [ 79.151357][ T4919] BTRFS info (device loop0): setting compat-ro feature flag for FREE_SPACE_TREE_VALID (0x2) [ 79.160840][ T4919] FAULT_INJECTION: forcing a failure. [ 79.160840][ T4919] name failslab, interval 1, probability 0, space 0, times 1 [ 79.165186][ T4919] CPU: 0 PID: 4919 Comm: syz.0.16 Not tainted syzkaller #0 [ 79.166411][ T4919] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/26/2026 [ 79.168005][ T4919] Call trace: [ 79.168562][ T4919] dump_backtrace+0x0/0x458 [ 79.169290][ T4919] show_stack+0x2c/0x3c [ 79.169923][ T4919] __dump_stack+0x30/0x40 [ 79.170650][ T4919] dump_stack_lvl+0xf4/0x15c [ 79.171333][ T4919] dump_stack+0x1c/0x5c [ 79.171983][ T4919] should_fail+0x3bc/0x514 [ 79.172663][ T4919] __should_failslab+0xbc/0x10c [ 79.173545][ T4919] should_failslab+0x10/0x28 [ 79.174296][ T4919] slab_pre_alloc_hook+0x64/0xe8 [ 79.175149][ T4919] kmem_cache_alloc+0x94/0x3d4 [ 79.175923][ T4919] btrfs_alloc_path+0x5c/0x68 [ 79.176736][ T4919] btrfs_insert_inode_ref+0xf0/0xa2c [ 79.177641][ T4919] btrfs_add_link+0x248/0xa9c [ 79.178446][ T4919] btrfs_link+0x3a4/0x694 [ 79.179184][ T4919] vfs_link+0x5b4/0x744 [ 79.179839][ T4919] do_linkat+0x258/0x750 [ 79.180532][ T4919] __arm64_sys_linkat+0xe4/0x100 [ 79.181386][ T4919] invoke_syscall+0x98/0x2b0 [ 79.182178][ T4919] el0_svc_common+0x138/0x258 [ 79.182961][ T4919] do_el0_svc+0x58/0x13c [ 79.183688][ T4919] el0_svc+0x78/0x1d0 [ 79.184371][ T4919] el0t_64_sync_handler+0xcc/0xe4 [ 79.185228][ T4919] el0t_64_sync+0x1a0/0x1a4 [ 79.381813][ T4947] loop0: detected capacity change from 0 to 32768 [ 79.390671][ T4947] BTRFS: device fsid ed167579-eb65-4e76-9a50-61ac97e9b59d devid 1 transid 8 /dev/loop0 scanned by syz.0.17 (4947) [ 79.395785][ T4947] BTRFS info (device loop0): using sha256 (sha256-ce) checksum algorithm [ 79.397303][ T4947] BTRFS info (device loop0): metadata ratio 1025 [ 79.398388][ T4947] BTRFS info (device loop0): doing ref verification [ 79.399495][ T4947] BTRFS info (device loop0): force clearing of disk cache [ 79.400876][ T4947] BTRFS info (device loop0): turning off barriers [ 79.401929][ T4947] BTRFS info (device loop0): setting nodatacow, compression disabled [ 79.403585][ T4947] BTRFS info (device loop0): enabling ssd optimizations [ 79.404610][ T4947] BTRFS info (device loop0): using spread ssd allocation scheme [ 79.405779][ T4947] BTRFS info (device loop0): not using ssd optimizations [ 79.406807][ T4947] BTRFS info (device loop0): not using spread ssd allocation scheme [ 79.408020][ T4947] BTRFS info (device loop0): using free space tree [ 79.409002][ T4947] BTRFS info (device loop0): has skinny extents [ 79.423200][ T4947] BTRFS info (device loop0): clearing free space tree [ 79.424358][ T4947] BTRFS info (device loop0): clearing compat-ro feature flag for FREE_SPACE_TREE (0x1) [ 79.425912][ T4947] BTRFS info (device loop0): clearing compat-ro feature flag for FREE_SPACE_TREE_VALID (0x2) [ 79.430682][ T4947] BTRFS info (device loop0): creating free space tree [ 79.435229][ T4947] BTRFS info (device loop0): setting compat-ro feature flag for FREE_SPACE_TREE (0x1) [ 79.436797][ T4947] BTRFS info (device loop0): setting compat-ro feature flag for FREE_SPACE_TREE_VALID (0x2) [ 79.441656][ T4947] FAULT_INJECTION: forcing a failure. [ 79.441656][ T4947] name failslab, interval 1, probability 0, space 0, times 0 [ 79.444713][ T4947] CPU: 1 PID: 4947 Comm: syz.0.17 Not tainted syzkaller #0 [ 79.445966][ T4947] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/26/2026 [ 79.447532][ T4947] Call trace: [ 79.448094][ T4947] dump_backtrace+0x0/0x458 [ 79.448867][ T4947] show_stack+0x2c/0x3c [ 79.449496][ T4947] __dump_stack+0x30/0x40 [ 79.450195][ T4947] dump_stack_lvl+0xf4/0x15c [ 79.450985][ T4947] dump_stack+0x1c/0x5c [ 79.451671][ T4947] should_fail+0x3bc/0x514 [ 79.452321][ T4947] __should_failslab+0xbc/0x10c [ 79.453173][ T4947] should_failslab+0x10/0x28 [ 79.453989][ T4947] slab_pre_alloc_hook+0x64/0xe8 [ 79.454835][ T4947] kmem_cache_alloc+0x94/0x3d4 [ 79.455617][ T4947] start_transaction+0x4d0/0x13ec [ 79.456408][ T4947] btrfs_start_transaction+0x34/0x44 [ 79.457307][ T4947] btrfs_link+0x1f0/0x694 [ 79.458033][ T4947] vfs_link+0x5b4/0x744 [ 79.458723][ T4947] do_linkat+0x258/0x750 [ 79.459460][ T4947] __arm64_sys_linkat+0xe4/0x100 [ 79.460304][ T4947] invoke_syscall+0x98/0x2b0 [ 79.461097][ T4947] el0_svc_common+0x138/0x258 [ 79.461897][ T4947] do_el0_svc+0x58/0x13c [ 79.462578][ T4947] el0_svc+0x78/0x1d0 [ 79.463256][ T4947] el0t_64_sync_handler+0xcc/0xe4 [ 79.464162][ T4947] el0t_64_sync+0x1a0/0x1a4 [ 79.626028][ T4969] loop0: detected capacity change from 0 to 32768 [ 79.712855][ T4969] BTRFS: device fsid ed167579-eb65-4e76-9a50-61ac97e9b59d devid 1 transid 8 /dev/loop0 scanned by syz.0.18 (4969) [ 79.717017][ T4969] BTRFS info (device loop0): using sha256 (sha256-ce) checksum algorithm [ 79.718576][ T4969] BTRFS info (device loop0): metadata ratio 1025 [ 79.719608][ T4969] BTRFS info (device loop0): doing ref verification [ 79.720674][ T4969] BTRFS info (device loop0): force clearing of disk cache [ 79.721788][ T4969] BTRFS info (device loop0): turning off barriers [ 79.723441][ T4969] BTRFS info (device loop0): setting nodatacow, compression disabled [ 79.724718][ T4969] BTRFS info (device loop0): enabling ssd optimizations [ 79.725811][ T4969] BTRFS info (device loop0): using spread ssd allocation scheme [ 79.727178][ T4969] BTRFS info (device loop0): not using ssd optimizations [ 79.728370][ T4969] BTRFS info (device loop0): not using spread ssd allocation scheme [ 79.729712][ T4969] BTRFS info (device loop0): using free space tree [ 79.730833][ T4969] BTRFS info (device loop0): has skinny extents [ 79.740795][ T4969] BTRFS info (device loop0): clearing free space tree [ 79.742018][ T4969] BTRFS info (device loop0): clearing compat-ro feature flag for FREE_SPACE_TREE (0x1) [ 79.744141][ T4969] BTRFS info (device loop0): clearing compat-ro feature flag for FREE_SPACE_TREE_VALID (0x2) [ 79.747885][ T4969] BTRFS info (device loop0): creating free space tree [ 79.749577][ T4969] BTRFS info (device loop0): setting compat-ro feature flag for FREE_SPACE_TREE (0x1) [ 79.751034][ T4969] BTRFS info (device loop0): setting compat-ro feature flag for FREE_SPACE_TREE_VALID (0x2) [ 79.757851][ T4969] FAULT_INJECTION: forcing a failure. [ 79.757851][ T4969] name failslab, interval 1, probability 0, space 0, times 0 [ 79.760031][ T4969] CPU: 0 PID: 4969 Comm: syz.0.18 Not tainted syzkaller #0 [ 79.761232][ T4969] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/26/2026 [ 79.762899][ T4969] Call trace: [ 79.763403][ T4969] dump_backtrace+0x0/0x458 [ 79.764208][ T4969] show_stack+0x2c/0x3c [ 79.764877][ T4969] __dump_stack+0x30/0x40 [ 79.765555][ T4969] dump_stack_lvl+0xf4/0x15c [ 79.766311][ T4969] dump_stack+0x1c/0x5c [ 79.767035][ T4969] should_fail+0x3bc/0x514 [ 79.767842][ T4969] __should_failslab+0xbc/0x10c [ 79.768660][ T4969] should_failslab+0x10/0x28 [ 79.769459][ T4969] slab_pre_alloc_hook+0x64/0xe8 [ 79.770274][ T4969] kmem_cache_alloc+0x94/0x3d4 [ 79.771080][ T4969] btrfs_alloc_path+0x5c/0x68 [ 79.771836][ T4969] btrfs_insert_inode_ref+0xf0/0xa2c [ 79.772788][ T4969] btrfs_add_link+0x248/0xa9c [ 79.773533][ T4969] btrfs_link+0x3a4/0x694 [ 79.774274][ T4969] vfs_link+0x5b4/0x744 [ 79.774957][ T4969] do_linkat+0x258/0x750 [ 79.775661][ T4969] __arm64_sys_linkat+0xe4/0x100 [ 79.776466][ T4969] invoke_syscall+0x98/0x2b0 [ 79.777189][ T4969] el0_svc_common+0x138/0x258 [ 79.777977][ T4969] do_el0_svc+0x58/0x13c [ 79.778699][ T4969] el0_svc+0x78/0x1d0 [ 79.779380][ T4969] el0t_64_sync_handler+0xcc/0xe4 [ 79.780208][ T4969] el0t_64_sync+0x1a0/0x1a4 [ 79.930792][ T4991] loop0: detected capacity change from 0 to 32768 [ 79.964735][ T4991] BTRFS: device fsid ed167579-eb65-4e76-9a50-61ac97e9b59d devid 1 transid 8 /dev/loop0 scanned by syz.0.19 (4991) [ 79.967804][ T4991] BTRFS info (device loop0): using sha256 (sha256-ce) checksum algorithm [ 79.969922][ T4991] BTRFS info (device loop0): metadata ratio 1025 [ 79.970894][ T4991] BTRFS info (device loop0): doing ref verification [ 79.971867][ T4991] BTRFS info (device loop0): force clearing of disk cache [ 79.973506][ T4991] BTRFS info (device loop0): turning off barriers [ 79.974532][ T4991] BTRFS info (device loop0): setting nodatacow, compression disabled [ 79.975889][ T4991] BTRFS info (device loop0): enabling ssd optimizations [ 79.976976][ T4991] BTRFS info (device loop0): using spread ssd allocation scheme [ 79.978164][ T4991] BTRFS info (device loop0): not using ssd optimizations [ 79.979275][ T4991] BTRFS info (device loop0): not using spread ssd allocation scheme [ 79.980597][ T4991] BTRFS info (device loop0): using free space tree [ 79.981822][ T4991] BTRFS info (device loop0): has skinny extents [ 79.994364][ T4991] BTRFS info (device loop0): clearing free space tree [ 79.995598][ T4991] BTRFS info (device loop0): clearing compat-ro feature flag for FREE_SPACE_TREE (0x1) [ 79.997180][ T4991] BTRFS info (device loop0): clearing compat-ro feature flag for FREE_SPACE_TREE_VALID (0x2) [ 80.000986][ T4991] BTRFS info (device loop0): creating free space tree [ 80.002500][ T4991] BTRFS info (device loop0): setting compat-ro feature flag for FREE_SPACE_TREE (0x1) [ 80.004711][ T4991] BTRFS info (device loop0): setting compat-ro feature flag for FREE_SPACE_TREE_VALID (0x2) [ 80.009544][ T4991] FAULT_INJECTION: forcing a failure. [ 80.009544][ T4991] name failslab, interval 1, probability 0, space 0, times 0 [ 80.011759][ T4991] CPU: 1 PID: 4991 Comm: syz.0.19 Not tainted syzkaller #0 [ 80.013076][ T4991] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/26/2026 [ 80.014707][ T4991] Call trace: [ 80.015267][ T4991] dump_backtrace+0x0/0x458 [ 80.016058][ T4991] show_stack+0x2c/0x3c [ 80.016775][ T4991] __dump_stack+0x30/0x40 [ 80.017498][ T4991] dump_stack_lvl+0xf4/0x15c [ 80.018303][ T4991] dump_stack+0x1c/0x5c [ 80.019026][ T4991] should_fail+0x3bc/0x514 [ 80.019807][ T4991] __should_failslab+0xbc/0x10c [ 80.020625][ T4991] should_failslab+0x10/0x28 [ 80.021393][ T4991] slab_pre_alloc_hook+0x64/0xe8 [ 80.022272][ T4991] kmem_cache_alloc+0x94/0x3d4 [ 80.023113][ T4991] btrfs_alloc_path+0x5c/0x68 [ 80.023873][ T4991] btrfs_insert_inode_ref+0xf0/0xa2c [ 80.024789][ T4991] btrfs_add_link+0x248/0xa9c [ 80.025566][ T4991] btrfs_link+0x3a4/0x694 [ 80.026252][ T4991] vfs_link+0x5b4/0x744 [ 80.026934][ T4991] do_linkat+0x258/0x750 [ 80.027646][ T4991] __arm64_sys_linkat+0xe4/0x100 [ 80.028461][ T4991] invoke_syscall+0x98/0x2b0 [ 80.029204][ T4991] el0_svc_common+0x138/0x258 [ 80.029966][ T4991] do_el0_svc+0x58/0x13c [ 80.030739][ T4991] el0_svc+0x78/0x1d0 [ 80.031423][ T4991] el0t_64_sync_handler+0xcc/0xe4 [ 80.032371][ T4991] el0t_64_sync+0x1a0/0x1a4 [ 80.207792][ T5014] loop0: detected capacity change from 0 to 32768 [ 80.249511][ T5014] BTRFS: device fsid ed167579-eb65-4e76-9a50-61ac97e9b59d devid 1 transid 8 /dev/loop0 scanned by syz.0.20 (5014) [ 80.255365][ T5014] BTRFS info (device loop0): using sha256 (sha256-ce) checksum algorithm [ 80.256739][ T5014] BTRFS info (device loop0): metadata ratio 1025 [ 80.257786][ T5014] BTRFS info (device loop0): doing ref verification [ 80.258908][ T5014] BTRFS info (device loop0): force clearing of disk cache [ 80.260067][ T5014] BTRFS info (device loop0): turning off barriers [ 80.261154][ T5014] BTRFS info (device loop0): setting nodatacow, compression disabled [ 80.262387][ T5014] BTRFS info (device loop0): enabling ssd optimizations [ 80.265865][ T5014] BTRFS info (device loop0): using spread ssd allocation scheme [ 80.267464][ T5014] BTRFS info (device loop0): not using ssd optimizations [ 80.268533][ T5014] BTRFS info (device loop0): not using spread ssd allocation scheme [ 80.269851][ T5014] BTRFS info (device loop0): using free space tree [ 80.270840][ T5014] BTRFS info (device loop0): has skinny extents [ 80.280999][ T5014] BTRFS info (device loop0): clearing free space tree [ 80.282140][ T5014] BTRFS info (device loop0): clearing compat-ro feature flag for FREE_SPACE_TREE (0x1) [ 80.285809][ T5014] BTRFS info (device loop0): clearing compat-ro feature flag for FREE_SPACE_TREE_VALID (0x2) [ 80.290250][ T5014] BTRFS info (device loop0): creating free space tree [ 80.291656][ T5014] BTRFS info (device loop0): setting compat-ro feature flag for FREE_SPACE_TREE (0x1) [ 80.293931][ T5014] BTRFS info (device loop0): setting compat-ro feature flag for FREE_SPACE_TREE_VALID (0x2) [ 80.299940][ T5014] FAULT_INJECTION: forcing a failure. [ 80.299940][ T5014] name failslab, interval 1, probability 0, space 0, times 0 [ 80.301943][ T5014] CPU: 1 PID: 5014 Comm: syz.0.20 Not tainted syzkaller #0 [ 80.303134][ T5014] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/26/2026 [ 80.304837][ T5014] Call trace: [ 80.305406][ T5014] dump_backtrace+0x0/0x458 [ 80.306146][ T5014] show_stack+0x2c/0x3c [ 80.306791][ T5014] __dump_stack+0x30/0x40 [ 80.307494][ T5014] dump_stack_lvl+0xf4/0x15c [ 80.308190][ T5014] dump_stack+0x1c/0x5c [ 80.308916][ T5014] should_fail+0x3bc/0x514 [ 80.309695][ T5014] __should_failslab+0xbc/0x10c [ 80.310547][ T5014] should_failslab+0x10/0x28 [ 80.311383][ T5014] slab_pre_alloc_hook+0x64/0xe8 [ 80.312265][ T5014] kmem_cache_alloc+0x94/0x3d4 [ 80.313046][ T5014] btrfs_alloc_path+0x5c/0x68 [ 80.313784][ T5014] btrfs_insert_inode_ref+0xf0/0xa2c [ 80.314612][ T5014] btrfs_add_link+0x248/0xa9c [ 80.315366][ T5014] btrfs_link+0x3a4/0x694 [ 80.316018][ T5014] vfs_link+0x5b4/0x744 [ 80.316727][ T5014] do_linkat+0x258/0x750 [ 80.317489][ T5014] __arm64_sys_linkat+0xe4/0x100 [ 80.318399][ T5014] invoke_syscall+0x98/0x2b0 [ 80.319118][ T5014] el0_svc_common+0x138/0x258 [ 80.319967][ T5014] do_el0_svc+0x58/0x13c [ 80.320738][ T5014] el0_svc+0x78/0x1d0 [ 80.321437][ T5014] el0t_64_sync_handler+0xcc/0xe4 [ 80.322283][ T5014] el0t_64_sync+0x1a0/0x1a4 [ 80.491396][ T1643] device hsr_slave_0 left promiscuous mode [ 80.498381][ T5036] loop0: detected capacity change from 0 to 32768 [ 80.523388][ T1643] device hsr_slave_1 left promiscuous mode [ 80.593589][ T5036] BTRFS: device fsid ed167579-eb65-4e76-9a50-61ac97e9b59d devid 1 transid 8 /dev/loop0 scanned by syz.0.21 (5036) [ 80.598725][ T5036] BTRFS info (device loop0): using sha256 (sha256-ce) checksum algorithm [ 80.600086][ T5036] BTRFS info (device loop0): metadata ratio 1025 [ 80.601140][ T5036] BTRFS info (device loop0): doing ref verification [ 80.602384][ T5036] BTRFS info (device loop0): force clearing of disk cache [ 80.604142][ T1643] batman_adv: batadv0: Interface deactivated: batadv_slave_0 [ 80.605255][ T1643] batman_adv: batadv0: Removing interface: batadv_slave_0 [ 80.606714][ T1643] batman_adv: batadv0: Interface deactivated: batadv_slave_1 [ 80.607939][ T1643] batman_adv: batadv0: Removing interface: batadv_slave_1 [ 80.609408][ T1643] device bridge_slave_1 left promiscuous mode [ 80.610450][ T1643] bridge0: port 2(bridge_slave_1) entered disabled state [ 80.611993][ T5036] BTRFS info (device loop0): turning off barriers [ 80.613398][ T5036] BTRFS info (device loop0): setting nodatacow, compression disabled [ 80.614666][ T5036] BTRFS info (device loop0): enabling ssd optimizations [ 80.615750][ T5036] BTRFS info (device loop0): using spread ssd allocation scheme [ 80.617052][ T5036] BTRFS info (device loop0): not using ssd optimizations [ 80.618183][ T5036] BTRFS info (device loop0): not using spread ssd allocation scheme [ 80.633805][ T1643] device bridge_slave_0 left promiscuous mode [ 80.634357][ T5036] FAULT_INJECTION: forcing a failure. [ 80.634357][ T5036] name failslab, interval 1, probability 0, space 0, times 0 [ 80.634900][ T1643] bridge0: port 1(bridge_slave_0) entered disabled state [ 80.636743][ T5036] CPU: 0 PID: 5036 Comm: syz.0.21 Not tainted syzkaller #0 [ 80.638884][ T5036] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/26/2026 [ 80.640533][ T5036] Call trace: [ 80.641014][ T5036] dump_backtrace+0x0/0x458 [ 80.641733][ T5036] show_stack+0x2c/0x3c [ 80.642388][ T5036] __dump_stack+0x30/0x40 [ 80.643124][ T5036] dump_stack_lvl+0xf4/0x15c [ 80.643925][ T5036] dump_stack+0x1c/0x5c [ 80.644638][ T5036] should_fail+0x3bc/0x514 [ 80.645370][ T5036] __should_failslab+0xbc/0x10c [ 80.646199][ T5036] should_failslab+0x10/0x28 [ 80.646951][ T5036] slab_pre_alloc_hook+0x64/0xe8 [ 80.647767][ T5036] kmem_cache_alloc+0x94/0x3d4 [ 80.648522][ T5036] btrfs_alloc_path+0x5c/0x68 [ 80.649251][ T5036] btrfs_insert_inode_ref+0xf0/0xa2c [ 80.650057][ T5036] btrfs_add_link+0x248/0xa9c [ 80.650802][ T5036] btrfs_link+0x3a4/0x694 [ 80.651534][ T5036] vfs_link+0x5b4/0x744 [ 80.652218][ T5036] do_linkat+0x258/0x750 [ 80.652920][ T5036] __arm64_sys_linkat+0xe4/0x100 [ 80.653698][ T5036] invoke_syscall+0x98/0x2b0 [ 80.654468][ T5036] el0_svc_common+0x138/0x258 [ 80.655205][ T5036] do_el0_svc+0x58/0x13c [ 80.655868][ T5036] el0_svc+0x78/0x1d0 [ 80.656508][ T5036] el0t_64_sync_handler+0xcc/0xe4 [ 80.657366][ T5036] el0t_64_sync+0x1a0/0x1a4 [ 80.773095][ T1643] device veth1_macvtap left promiscuous mode [ 80.774118][ T1643] device veth0_macvtap left promiscuous mode [ 80.775166][ T1643] device veth1_vlan left promiscuous mode [ 80.776152][ T1643] device veth0_vlan left promiscuous mode [ 80.847855][ T5058] loop0: detected capacity change from 0 to 32768 [ 80.853416][ T5058] BTRFS: device fsid ed167579-eb65-4e76-9a50-61ac97e9b59d devid 1 transid 8 /dev/loop0 scanned by syz.0.22 (5058) [ 80.918994][ T5058] FAULT_INJECTION: forcing a failure. [ 80.918994][ T5058] name failslab, interval 1, probability 0, space 0, times 0 [ 80.921164][ T5058] CPU: 1 PID: 5058 Comm: syz.0.22 Not tainted syzkaller #0 [ 80.922301][ T5058] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/26/2026 [ 80.923939][ T5058] Call trace: [ 80.924423][ T5058] dump_backtrace+0x0/0x458 [ 80.925180][ T5058] show_stack+0x2c/0x3c [ 80.925808][ T5058] __dump_stack+0x30/0x40 [ 80.926522][ T5058] dump_stack_lvl+0xf4/0x15c [ 80.927301][ T5058] dump_stack+0x1c/0x5c [ 80.928014][ T5058] should_fail+0x3bc/0x514 [ 80.928709][ T5058] __should_failslab+0xbc/0x10c [ 80.929487][ T5058] should_failslab+0x10/0x28 [ 80.930262][ T5058] slab_pre_alloc_hook+0x64/0xe8 [ 80.930996][ T5058] kmem_cache_alloc+0x94/0x3d4 [ 80.931787][ T5058] btrfs_alloc_path+0x5c/0x68 [ 80.932619][ T5058] btrfs_insert_dir_item+0x184/0x3e8 [ 80.933548][ T5058] btrfs_add_link+0x2b0/0xa9c [ 80.934363][ T5058] btrfs_link+0x3a4/0x694 [ 80.935102][ T5058] vfs_link+0x5b4/0x744 [ 80.935822][ T5058] do_linkat+0x258/0x750 [ 80.936580][ T5058] __arm64_sys_linkat+0xe4/0x100 [ 80.937432][ T5058] invoke_syscall+0x98/0x2b0 [ 80.938211][ T5058] el0_svc_common+0x138/0x258 [ 80.938952][ T5058] do_el0_svc+0x58/0x13c [ 80.939664][ T5058] el0_svc+0x78/0x1d0 [ 80.940307][ T5058] el0t_64_sync_handler+0xcc/0xe4 [ 80.941114][ T5058] el0t_64_sync+0x1a0/0x1a4 [ 80.943541][ T1643] team0 (unregistering): Port device team_slave_1 removed [ 80.944214][ T5058] ------------[ cut here ]------------ [ 80.945843][ T5058] WARNING: CPU: 1 PID: 5058 at fs/btrfs/inode.c:6776 btrfs_add_link+0x718/0xa9c [ 80.947176][ T5058] Modules linked in: [ 80.947853][ T5058] CPU: 1 PID: 5058 Comm: syz.0.22 Not tainted syzkaller #0 [ 80.948986][ T5058] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/26/2026 [ 80.950525][ T5058] pstate: 62400005 (nZCv daif +PAN -UAO +TCO -DIT -SSBS BTYPE=--) [ 80.951861][ T5058] pc : btrfs_add_link+0x718/0xa9c [ 80.952761][ T5058] lr : btrfs_add_link+0x718/0xa9c [ 80.953583][ T5058] sp : ffff8000200b79e0 [ 80.954250][ T5058] x29: ffff8000200b7ae0 x28: ffff0000dea1b160 x27: 0000000000000107 [ 80.955573][ T5058] x26: 00000000fffffff4 x25: 0000000000000001 x24: dfff800000000000 [ 80.956798][ T5058] x23: 0000000000000005 x22: 1fffe0001bd43637 x21: ffff700004016f44 [ 80.958193][ T5058] x20: 00000000fffffff4 x19: ffff0000dea1b1b8 x18: 0000000000000001 [ 80.959615][ T5058] x17: 0000000000000000 x16: ffff80001125a830 x15: 00000000ffffffff [ 80.960953][ T5058] x14: 0000000000000001 x13: 1fffe000341f47ab x12: 0000000000ff0100 [ 80.962288][ T5058] x11: 0000000000000000 x10: 0000000000000000 x9 : 1b2fefdb55d78e00 [ 80.963543][ T5058] x8 : 1b2fefdb55d78e00 x7 : 0000000000000001 x6 : 0000000000000001 [ 80.964846][ T5058] x5 : ffff8000200b72f8 x4 : ffff80001437f3e0 x3 : ffff800008508edc [ 80.966156][ T5058] x2 : 0000000000000001 x1 : 0000000100000000 x0 : 0000000000000026 [ 80.967384][ T5058] Call trace: [ 80.967900][ T5058] btrfs_add_link+0x718/0xa9c [ 80.968635][ T5058] btrfs_link+0x3a4/0x694 [ 80.969348][ T5058] vfs_link+0x5b4/0x744 [ 80.970087][ T5058] do_linkat+0x258/0x750 [ 80.970800][ T5058] __arm64_sys_linkat+0xe4/0x100 [ 80.971617][ T5058] invoke_syscall+0x98/0x2b0 [ 80.972361][ T5058] el0_svc_common+0x138/0x258 [ 80.972819][ T4162] Bluetooth: hci0: command 0x0419 tx timeout [ 80.973180][ T5058] do_el0_svc+0x58/0x13c [ 80.974881][ T5058] el0_svc+0x78/0x1d0 [ 80.975495][ T5058] el0t_64_sync_handler+0xcc/0xe4 [ 80.976302][ T5058] el0t_64_sync+0x1a0/0x1a4 [ 80.976992][ T5058] irq event stamp: 84110 [ 80.977680][ T5058] hardirqs last enabled at (84109): [] __up_console_sem+0xb4/0xfc [ 80.979374][ T5058] hardirqs last disabled at (84110): [] el1_dbg+0x24/0x80 [ 80.980762][ T5058] softirqs last enabled at (84088): [] handle_softirqs+0xa40/0xbe4 [ 80.982369][ T5058] softirqs last disabled at (83971): [] __irq_exit_rcu+0x240/0x43c [ 80.983933][ T5058] ---[ end trace cf16be9f527b4bc2 ]--- [ 80.985699][ T1643] team0 (unregistering): Port device team_slave_0 removed [ 80.986053][ T5058] BTRFS: error (device loop0) in btrfs_add_link:6776: errno=-12 Out of memory [ 80.990412][ T1643] bond0 (unregistering): (slave bond_slave_1): Releasing backup interface [ 81.021920][ T1643] bond0 (unregistering): (slave bond_slave_0): Releasing backup interface [ 81.138086][ T1643] bond0 (unregistering): Released all slaves [ 81.180938][ T5079] loop0: detected capacity change from 0 to 32768 [ 81.215216][ T5079] BTRFS: device fsid ed167579-eb65-4e76-9a50-61ac97e9b59d devid 1 transid 8 /dev/loop0 scanned by syz.0.23 (5079) [ 81.243176][ T5079] FAULT_INJECTION: forcing a failure. [ 81.243176][ T5079] name failslab, interval 1, probability 0, space 0, times 0 [ 81.245236][ T5079] CPU: 0 PID: 5079 Comm: syz.0.23 Tainted: G W syzkaller #0 [ 81.246560][ T5079] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/26/2026 [ 81.248233][ T5079] Call trace: [ 81.248793][ T5079] dump_backtrace+0x0/0x458 [ 81.249509][ T5079] show_stack+0x2c/0x3c [ 81.250216][ T5079] __dump_stack+0x30/0x40 [ 81.250922][ T5079] dump_stack_lvl+0xf4/0x15c [ 81.251682][ T5079] dump_stack+0x1c/0x5c [ 81.252377][ T5079] should_fail+0x3bc/0x514 [ 81.253137][ T5079] __should_failslab+0xbc/0x10c [ 81.253940][ T5079] should_failslab+0x10/0x28 [ 81.254738][ T5079] slab_pre_alloc_hook+0x64/0xe8 [ 81.255562][ T5079] kmem_cache_alloc+0x94/0x3d4 [ 81.256336][ T5079] btrfs_alloc_path+0x5c/0x68 [ 81.257079][ T5079] btrfs_insert_dir_item+0x184/0x3e8 [ 81.257911][ T5079] btrfs_add_link+0x2b0/0xa9c [ 81.258719][ T5079] btrfs_link+0x3a4/0x694 [ 81.259427][ T5079] vfs_link+0x5b4/0x744 [ 81.260098][ T5079] do_linkat+0x258/0x750 [ 81.260797][ T5079] __arm64_sys_linkat+0xe4/0x100 [ 81.261605][ T5079] invoke_syscall+0x98/0x2b0 [ 81.262358][ T5079] el0_svc_common+0x138/0x258 [ 81.263179][ T5079] do_el0_svc+0x58/0x13c [ 81.263902][ T5079] el0_svc+0x78/0x1d0 [ 81.264490][ T5079] el0t_64_sync_handler+0xcc/0xe4 [ 81.265235][ T5079] el0t_64_sync+0x1a0/0x1a4 [ 81.267943][ T5079] ------------[ cut here ]------------ [ 81.268971][ T5079] WARNING: CPU: 0 PID: 5079 at fs/btrfs/inode.c:6776 btrfs_add_link+0x718/0xa9c [ 81.270369][ T5079] Modules linked in: [ 81.270971][ T5079] CPU: 0 PID: 5079 Comm: syz.0.23 Tainted: G W syzkaller #0 [ 81.272279][ T5079] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/26/2026 [ 81.273881][ T5079] pstate: 62400005 (nZCv daif +PAN -UAO +TCO -DIT -SSBS BTYPE=--) [ 81.275174][ T5079] pc : btrfs_add_link+0x718/0xa9c [ 81.276053][ T5079] lr : btrfs_add_link+0x718/0xa9c [ 81.276870][ T5079] sp : ffff8000207379e0 [ 81.277516][ T5079] x29: ffff800020737ae0 x28: ffff0000dea1eb00 x27: 0000000000000107 [ 81.278968][ T5079] x26: 00000000fffffff4 x25: 0000000000000001 x24: dfff800000000000 [ 81.280280][ T5079] x23: 0000000000000005 x22: 1fffe0001bd43d6b x21: ffff7000040e6f44 [ 81.281621][ T5079] x20: 00000000fffffff4 x19: ffff0000dea1eb58 x18: 0000000000000001 [ 81.282972][ T5079] x17: 0000000000000000 x16: ffff80001125a830 x15: 00000000ffffffff [ 81.284358][ T5079] x14: 0000000000000001 x13: 1fffe000341f05ab x12: 0000000000ff0100 [ 81.285692][ T5079] x11: 0000000000000000 x10: 0000000000000000 x9 : 0c8cd6a5d6327a00 [ 81.287072][ T5079] x8 : 0c8cd6a5d6327a00 x7 : 0000000000000001 x6 : 0000000000000001 [ 81.288438][ T5079] x5 : ffff8000207372f8 x4 : ffff80001437f3e0 x3 : ffff800008508edc [ 81.289781][ T5079] x2 : 0000000000000001 x1 : 0000000100000000 x0 : 0000000000000026 [ 81.291013][ T5079] Call trace: [ 81.291516][ T5079] btrfs_add_link+0x718/0xa9c [ 81.292209][ T5079] btrfs_link+0x3a4/0x694 [ 81.292969][ T5079] vfs_link+0x5b4/0x744 [ 81.293634][ T5079] do_linkat+0x258/0x750 [ 81.294342][ T5079] __arm64_sys_linkat+0xe4/0x100 [ 81.295138][ T5079] invoke_syscall+0x98/0x2b0 [ 81.295907][ T5079] el0_svc_common+0x138/0x258 [ 81.296697][ T5079] do_el0_svc+0x58/0x13c [ 81.297378][ T5079] el0_svc+0x78/0x1d0 [ 81.298046][ T5079] el0t_64_sync_handler+0xcc/0xe4 [ 81.298826][ T5079] el0t_64_sync+0x1a0/0x1a4 [ 81.299601][ T5079] irq event stamp: 81926 [ 81.300314][ T5079] hardirqs last enabled at (81925): [] __up_console_sem+0xb4/0xfc [ 81.301921][ T5079] hardirqs last disabled at (81926): [] el1_dbg+0x24/0x80 [ 81.303337][ T5079] softirqs last enabled at (81906): [] handle_softirqs+0xa40/0xbe4 [ 81.304814][ T5079] softirqs last disabled at (81789): [] __irq_exit_rcu+0x240/0x43c [ 81.306459][ T5079] ---[ end trace cf16be9f527b4bc3 ]--- [ 81.309005][ T5079] BTRFS: error (device loop0) in btrfs_add_link:6776: errno=-12 Out of memory [ 81.455033][ T5101] loop0: detected capacity change from 0 to 32768 [ 81.458995][ T5101] BTRFS: device fsid ed167579-eb65-4e76-9a50-61ac97e9b59d devid 1 transid 8 /dev/loop0 scanned by syz.0.24 (5101) [ 81.498907][ T5101] FAULT_INJECTION: forcing a failure. [ 81.498907][ T5101] name failslab, interval 1, probability 0, space 0, times 0 [ 81.501006][ T5101] CPU: 1 PID: 5101 Comm: syz.0.24 Tainted: G W syzkaller #0 [ 81.502418][ T5101] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/26/2026 [ 81.503981][ T5101] Call trace: [ 81.504506][ T5101] dump_backtrace+0x0/0x458 [ 81.505264][ T5101] show_stack+0x2c/0x3c [ 81.505925][ T5101] __dump_stack+0x30/0x40 [ 81.506678][ T5101] dump_stack_lvl+0xf4/0x15c [ 81.507408][ T5101] dump_stack+0x1c/0x5c [ 81.507987][ T5101] should_fail+0x3bc/0x514 [ 81.508647][ T5101] __should_failslab+0xbc/0x10c [ 81.509379][ T5101] should_failslab+0x10/0x28 [ 81.510132][ T5101] slab_pre_alloc_hook+0x64/0xe8 [ 81.511000][ T5101] kmem_cache_alloc+0x94/0x3d4 [ 81.511775][ T5101] start_transaction+0x4d0/0x13ec [ 81.512624][ T5101] btrfs_start_transaction+0x34/0x44 [ 81.513530][ T5101] btrfs_link+0x1f0/0x694 [ 81.514254][ T5101] vfs_link+0x5b4/0x744 [ 81.514849][ T5101] do_linkat+0x258/0x750 [ 81.515508][ T5101] __arm64_sys_linkat+0xe4/0x100 [ 81.516250][ T5101] invoke_syscall+0x98/0x2b0 [ 81.516976][ T5101] el0_svc_common+0x138/0x258 [ 81.517702][ T5101] do_el0_svc+0x58/0x13c [ 81.518500][ T5101] el0_svc+0x78/0x1d0 [ 81.519143][ T5101] el0t_64_sync_handler+0xcc/0xe4 [ 81.519960][ T5101] el0t_64_sync+0x1a0/0x1a4 [ 81.673465][ T5123] loop0: detected capacity change from 0 to 32768 [ 81.676651][ T5123] BTRFS: device fsid ed167579-eb65-4e76-9a50-61ac97e9b59d devid 1 transid 8 /dev/loop0 scanned by syz.0.25 (5123) [ 81.710721][ T5123] FAULT_INJECTION: forcing a failure. [ 81.710721][ T5123] name failslab, interval 1, probability 0, space 0, times 0 [ 81.712654][ T5123] CPU: 0 PID: 5123 Comm: syz.0.25 Tainted: G W syzkaller #0 [ 81.714079][ T5123] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/26/2026 [ 81.715708][ T5123] Call trace: [ 81.716236][ T5123] dump_backtrace+0x0/0x458 [ 81.717044][ T5123] show_stack+0x2c/0x3c [ 81.718202][ T5123] __dump_stack+0x30/0x40 [ 81.718942][ T5123] dump_stack_lvl+0xf4/0x15c [ 81.719797][ T5123] dump_stack+0x1c/0x5c [ 81.720514][ T5123] should_fail+0x3bc/0x514 [ 81.721313][ T5123] __should_failslab+0xbc/0x10c [ 81.722109][ T5123] should_failslab+0x10/0x28 [ 81.722919][ T5123] slab_pre_alloc_hook+0x64/0xe8 [ 81.723854][ T5123] kmem_cache_alloc+0x94/0x3d4 [ 81.724664][ T5123] btrfs_alloc_path+0x5c/0x68 [ 81.725476][ T5123] btrfs_insert_dir_item+0x184/0x3e8 [ 81.726370][ T5123] btrfs_add_link+0x2b0/0xa9c [ 81.727119][ T5123] btrfs_link+0x3a4/0x694 [ 81.727816][ T5123] vfs_link+0x5b4/0x744 [ 81.728495][ T5123] do_linkat+0x258/0x750 [ 81.729178][ T5123] __arm64_sys_linkat+0xe4/0x100 [ 81.730043][ T5123] invoke_syscall+0x98/0x2b0 [ 81.730873][ T5123] el0_svc_common+0x138/0x258 [ 81.731713][ T5123] do_el0_svc+0x58/0x13c [ 81.732420][ T5123] el0_svc+0x78/0x1d0 [ 81.733046][ T5123] el0t_64_sync_handler+0xcc/0xe4 [ 81.734014][ T5123] el0t_64_sync+0x1a0/0x1a4 [ 81.736482][ T5123] ------------[ cut here ]------------ [ 81.737453][ T5123] WARNING: CPU: 0 PID: 5123 at fs/btrfs/inode.c:6776 btrfs_add_link+0x718/0xa9c [ 81.738774][ T5123] Modules linked in: [ 81.739415][ T5123] CPU: 0 PID: 5123 Comm: syz.0.25 Tainted: G W syzkaller #0 [ 81.740810][ T5123] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/26/2026 [ 81.742427][ T5123] pstate: 62400005 (nZCv daif +PAN -UAO +TCO -DIT -SSBS BTYPE=--) [ 81.743730][ T5123] pc : btrfs_add_link+0x718/0xa9c [ 81.744549][ T5123] lr : btrfs_add_link+0x718/0xa9c [ 81.745356][ T5123] sp : ffff8000208b79e0 [ 81.746068][ T5123] x29: ffff8000208b7ae0 x28: ffff0000dea1edc0 x27: 0000000000000107 [ 81.747430][ T5123] x26: 00000000fffffff4 x25: 0000000000000001 x24: dfff800000000000 [ 81.748724][ T5123] x23: 0000000000000005 x22: 1fffe0001bd43dc3 x21: ffff700004116f44 [ 81.750034][ T5123] x20: 00000000fffffff4 x19: ffff0000dea1ee18 x18: 0000000000000001 [ 81.751346][ T5123] x17: 0000000000000000 x16: ffff80001125a830 x15: 00000000ffffffff [ 81.752740][ T5123] x14: 0000000000000001 x13: 1fffe000341f05ab x12: 0000000000ff0100 [ 81.754027][ T5123] x11: 0000000000000000 x10: 0000000000000000 x9 : a9ee79ff8362da00 [ 81.755482][ T5123] x8 : a9ee79ff8362da00 x7 : 0000000000000001 x6 : 0000000000000001 [ 81.756853][ T5123] x5 : ffff8000208b72f8 x4 : ffff80001437f3e0 x3 : ffff800008508edc [ 81.758138][ T5123] x2 : 0000000000000001 x1 : 0000000100000000 x0 : 0000000000000026 [ 81.759495][ T5123] Call trace: [ 81.760044][ T5123] btrfs_add_link+0x718/0xa9c [ 81.760814][ T5123] btrfs_link+0x3a4/0x694 [ 81.761522][ T5123] vfs_link+0x5b4/0x744 [ 81.762208][ T5123] do_linkat+0x258/0x750 [ 81.762871][ T5123] __arm64_sys_linkat+0xe4/0x100 [ 81.763674][ T5123] invoke_syscall+0x98/0x2b0 [ 81.764443][ T5123] el0_svc_common+0x138/0x258 [ 81.765279][ T5123] do_el0_svc+0x58/0x13c [ 81.765994][ T5123] el0_svc+0x78/0x1d0 [ 81.766641][ T5123] el0t_64_sync_handler+0xcc/0xe4 [ 81.767484][ T5123] el0t_64_sync+0x1a0/0x1a4 [ 81.768264][ T5123] irq event stamp: 82864 [ 81.768952][ T5123] hardirqs last enabled at (82863): [] __up_console_sem+0xb4/0xfc [ 81.770440][ T5123] hardirqs last disabled at (82864): [] el1_dbg+0x24/0x80 [ 81.771826][ T5123] softirqs last enabled at (82844): [] handle_softirqs+0xa40/0xbe4 [ 81.773332][ T5123] softirqs last disabled at (82817): [] __irq_exit_rcu+0x240/0x43c [ 81.774930][ T5123] ---[ end trace cf16be9f527b4bc4 ]--- [ 81.778784][ T5123] BTRFS: error (device loop0) in btrfs_add_link:6776: errno=-12 Out of memory [ 81.987807][ T5145] BTRFS: device fsid ed167579-eb65-4e76-9a50-61ac97e9b59d devid 1 transid 8 /dev/loop0 scanned by syz.0.26 (5145) [ 82.017410][ T5145] FAULT_INJECTION: forcing a failure. [ 82.017410][ T5145] name fail_page_alloc, interval 1, probability 0, space 0, times 1 [ 82.019569][ T5145] CPU: 0 PID: 5145 Comm: syz.0.26 Tainted: G W syzkaller #0 [ 82.020891][ T5145] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/26/2026 [ 82.022491][ T5145] Call trace: [ 82.022994][ T5145] dump_backtrace+0x0/0x458 [ 82.023678][ T5145] show_stack+0x2c/0x3c [ 82.024374][ T5145] __dump_stack+0x30/0x40 [ 82.025162][ T5145] dump_stack_lvl+0xf4/0x15c [ 82.025952][ T5145] dump_stack+0x1c/0x5c [ 82.026658][ T5145] should_fail+0x3bc/0x514 [ 82.027357][ T5145] should_fail_alloc_page+0x74/0xa8 [ 82.028172][ T5145] prepare_alloc_pages+0x160/0x45c [ 82.028964][ T5145] __alloc_pages+0x108/0x470 [ 82.029663][ T5145] alloc_pages+0x34c/0x5c0 [ 82.030413][ T5145] new_slab+0xe0/0x544 [ 82.031099][ T5145] ___slab_alloc+0x6b4/0xd8c [ 82.031865][ T5145] __slab_alloc+0x68/0xc0 [ 82.032603][ T5145] kmem_cache_alloc+0x2a4/0x3d4 [ 82.033435][ T5145] start_transaction+0x4d0/0x13ec [ 82.034288][ T5145] btrfs_start_transaction+0x34/0x44 [ 82.035109][ T5145] btrfs_link+0x1f0/0x694 [ 82.035888][ T5145] vfs_link+0x5b4/0x744 [ 82.036594][ T5145] do_linkat+0x258/0x750 [ 82.037275][ T5145] __arm64_sys_linkat+0xe4/0x100 [ 82.038102][ T5145] invoke_syscall+0x98/0x2b0 [ 82.038866][ T5145] el0_svc_common+0x138/0x258 [ 82.039609][ T5145] do_el0_svc+0x58/0x13c [ 82.040304][ T5145] el0_svc+0x78/0x1d0 [ 82.040975][ T5145] el0t_64_sync_handler+0xcc/0xe4 [ 82.041842][ T5145] el0t_64_sync+0x1a0/0x1a4 [ 82.234476][ T5167] BTRFS: device fsid ed167579-eb65-4e76-9a50-61ac97e9b59d devid 1 transid 8 /dev/loop0 scanned by syz.0.27 (5167) [ 82.265244][ T5167] FAULT_INJECTION: forcing a failure. [ 82.265244][ T5167] name failslab, interval 1, probability 0, space 0, times 0 [ 82.267320][ T5167] CPU: 0 PID: 5167 Comm: syz.0.27 Tainted: G W syzkaller #0 [ 82.268681][ T5167] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/26/2026 [ 82.270192][ T5167] Call trace: [ 82.270673][ T5167] dump_backtrace+0x0/0x458 [ 82.271391][ T5167] show_stack+0x2c/0x3c [ 82.272063][ T5167] __dump_stack+0x30/0x40 [ 82.272779][ T5167] dump_stack_lvl+0xf4/0x15c [ 82.273523][ T5167] dump_stack+0x1c/0x5c [ 82.274174][ T5167] should_fail+0x3bc/0x514 [ 82.274847][ T5167] __should_failslab+0xbc/0x10c [ 82.275592][ T5167] should_failslab+0x10/0x28 [ 82.276297][ T5167] slab_pre_alloc_hook+0x64/0xe8 [ 82.277103][ T5167] kmem_cache_alloc+0x94/0x3d4 [ 82.277793][ T5167] btrfs_alloc_path+0x5c/0x68 [ 82.278506][ T5167] btrfs_insert_dir_item+0x184/0x3e8 [ 82.279259][ T5167] btrfs_add_link+0x2b0/0xa9c [ 82.279885][ T5167] btrfs_link+0x3a4/0x694 [ 82.280535][ T5167] vfs_link+0x5b4/0x744 [ 82.281173][ T5167] do_linkat+0x258/0x750 [ 82.281856][ T5167] __arm64_sys_linkat+0xe4/0x100 [ 82.282552][ T5167] invoke_syscall+0x98/0x2b0 [ 82.283223][ T5167] el0_svc_common+0x138/0x258 [ 82.283914][ T5167] do_el0_svc+0x58/0x13c [ 82.284652][ T5167] el0_svc+0x78/0x1d0 [ 82.285349][ T5167] el0t_64_sync_handler+0xcc/0xe4 [ 82.286215][ T5167] el0t_64_sync+0x1a0/0x1a4 [ 82.288807][ T5167] ------------[ cut here ]------------ [ 82.289760][ T5167] WARNING: CPU: 0 PID: 5167 at fs/btrfs/inode.c:6776 btrfs_add_link+0x718/0xa9c [ 82.291130][ T5167] Modules linked in: [ 82.291814][ T5167] CPU: 0 PID: 5167 Comm: syz.0.27 Tainted: G W syzkaller #0 [ 82.293209][ T5167] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/26/2026 [ 82.294897][ T5167] pstate: 62400005 (nZCv daif +PAN -UAO +TCO -DIT -SSBS BTYPE=--) [ 82.296227][ T5167] pc : btrfs_add_link+0x718/0xa9c [ 82.297119][ T5167] lr : btrfs_add_link+0x718/0xa9c [ 82.298032][ T5167] sp : ffff800020bd79e0 [ 82.298762][ T5167] x29: ffff800020bd7ae0 x28: ffff0000deb892c0 x27: 0000000000000107 [ 82.300115][ T5167] x26: 00000000fffffff4 x25: 0000000000000001 x24: dfff800000000000 [ 82.301446][ T5167] x23: 0000000000000005 x22: 1fffe0001bd71263 x21: ffff70000417af44 [ 82.302760][ T5167] x20: 00000000fffffff4 x19: ffff0000deb89318 x18: 0000000000000001 [ 82.304065][ T5167] x17: 0000000000000000 x16: ffff80001125a830 x15: 00000000ffffffff [ 82.305408][ T5167] x14: 0000000000000001 x13: 1fffe000341f05ab x12: 0000000000ff0100 [ 82.306785][ T5167] x11: 0000000000000000 x10: 0000000000000000 x9 : e50438627ebbd200 [ 82.308066][ T5167] x8 : e50438627ebbd200 x7 : 0000000000000001 x6 : 0000000000000001 [ 82.309309][ T5167] x5 : ffff800020bd72f8 x4 : ffff80001437f3e0 x3 : ffff800008508edc [ 82.310575][ T5167] x2 : 0000000000000001 x1 : 0000000100000000 x0 : 0000000000000026 [ 82.311846][ T5167] Call trace: [ 82.312346][ T5167] btrfs_add_link+0x718/0xa9c [ 82.313127][ T5167] btrfs_link+0x3a4/0x694 [ 82.313846][ T5167] vfs_link+0x5b4/0x744 [ 82.314524][ T5167] do_linkat+0x258/0x750 [ 82.315214][ T5167] __arm64_sys_linkat+0xe4/0x100 [ 82.316038][ T5167] invoke_syscall+0x98/0x2b0 [ 82.316793][ T5167] el0_svc_common+0x138/0x258 [ 82.317598][ T5167] do_el0_svc+0x58/0x13c [ 82.318300][ T5167] el0_svc+0x78/0x1d0 [ 82.318954][ T5167] el0t_64_sync_handler+0xcc/0xe4 [ 82.319753][ T5167] el0t_64_sync+0x1a0/0x1a4 [ 82.320466][ T5167] irq event stamp: 81516 [ 82.321118][ T5167] hardirqs last enabled at (81515): [] __up_console_sem+0xb4/0xfc [ 82.322606][ T5167] hardirqs last disabled at (81516): [] el1_dbg+0x24/0x80 [ 82.323980][ T5167] softirqs last enabled at (81496): [] handle_softirqs+0xa40/0xbe4 [ 82.325588][ T5167] softirqs last disabled at (81383): [] __irq_exit_rcu+0x240/0x43c [ 82.327117][ T5167] ---[ end trace cf16be9f527b4bc5 ]--- [ 82.330149][ T5167] BTRFS: error (device loop0) in btrfs_add_link:6776: errno=-12 Out of memory [ 82.522073][ T5189] BTRFS: device fsid ed167579-eb65-4e76-9a50-61ac97e9b59d devid 1 transid 8 /dev/loop0 scanned by syz.0.28 (5189) [ 82.603528][ T5189] FAULT_INJECTION: forcing a failure. [ 82.603528][ T5189] name failslab, interval 1, probability 0, space 0, times 0 [ 82.607423][ T5189] CPU: 0 PID: 5189 Comm: syz.0.28 Tainted: G W syzkaller #0 [ 82.608779][ T5189] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/26/2026 [ 82.610453][ T5189] Call trace: [ 82.610980][ T5189] dump_backtrace+0x0/0x458 [ 82.611700][ T5189] show_stack+0x2c/0x3c [ 82.612364][ T5189] __dump_stack+0x30/0x40 [ 82.613053][ T5189] dump_stack_lvl+0xf4/0x15c [ 82.613860][ T5189] dump_stack+0x1c/0x5c [ 82.614578][ T5189] should_fail+0x3bc/0x514 [ 82.615297][ T5189] __should_failslab+0xbc/0x10c [ 82.616112][ T5189] should_failslab+0x10/0x28 [ 82.616931][ T5189] slab_pre_alloc_hook+0x64/0xe8 [ 82.617738][ T5189] kmem_cache_alloc+0x94/0x3d4 [ 82.618539][ T5189] btrfs_alloc_path+0x5c/0x68 [ 82.619353][ T5189] btrfs_insert_dir_item+0x184/0x3e8 [ 82.620266][ T5189] btrfs_add_link+0x2b0/0xa9c [ 82.621024][ T5189] btrfs_link+0x3a4/0x694 [ 82.621732][ T5189] vfs_link+0x5b4/0x744 [ 82.622417][ T5189] do_linkat+0x258/0x750 [ 82.623122][ T5189] __arm64_sys_linkat+0xe4/0x100 [ 82.623914][ T5189] invoke_syscall+0x98/0x2b0 [ 82.624687][ T5189] el0_svc_common+0x138/0x258 [ 82.625440][ T5189] do_el0_svc+0x58/0x13c [ 82.626093][ T5189] el0_svc+0x78/0x1d0 [ 82.626825][ T5189] el0t_64_sync_handler+0xcc/0xe4 [ 82.627673][ T5189] el0t_64_sync+0x1a0/0x1a4 [ 82.634850][ T5189] ------------[ cut here ]------------ [ 82.635867][ T5189] WARNING: CPU: 0 PID: 5189 at fs/btrfs/inode.c:6776 btrfs_add_link+0x718/0xa9c [ 82.637317][ T5189] Modules linked in: [ 82.637930][ T5189] CPU: 0 PID: 5189 Comm: syz.0.28 Tainted: G W syzkaller #0 [ 82.639406][ T5189] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/26/2026 [ 82.640991][ T5189] pstate: 62400005 (nZCv daif +PAN -UAO +TCO -DIT -SSBS BTYPE=--) [ 82.642208][ T5189] pc : btrfs_add_link+0x718/0xa9c [ 82.643010][ T5189] lr : btrfs_add_link+0x718/0xa9c [ 82.643865][ T5189] sp : ffff800020bd79e0 [ 82.644569][ T5189] x29: ffff800020bd7ae0 x28: ffff0000deb89420 x27: 0000000000000107 [ 82.645897][ T5189] x26: 00000000fffffff4 x25: 0000000000000001 x24: dfff800000000000 [ 82.647206][ T5189] x23: 0000000000000005 x22: 1fffe0001bd7128f x21: ffff70000417af44 [ 82.648544][ T5189] x20: 00000000fffffff4 x19: ffff0000deb89478 x18: 0000000000000001 [ 82.649790][ T5189] x17: 0000000000000000 x16: ffff80001125a830 x15: 00000000ffffffff [ 82.651099][ T5189] x14: 0000000000000001 x13: 1fffe000341f05ab x12: 0000000000ff0100 [ 82.652442][ T5189] x11: 0000000000000000 x10: 0000000000000000 x9 : 6998af049d95c200 [ 82.653794][ T5189] x8 : 6998af049d95c200 x7 : 0000000000000001 x6 : 0000000000000001 [ 82.655204][ T5189] x5 : ffff800020bd72f8 x4 : ffff80001437f3e0 x3 : ffff800008508edc [ 82.656501][ T5189] x2 : 0000000000000001 x1 : 0000000100000000 x0 : 0000000000000026 [ 82.657788][ T5189] Call trace: [ 82.658404][ T5189] btrfs_add_link+0x718/0xa9c [ 82.659172][ T5189] btrfs_link+0x3a4/0x694 [ 82.659839][ T5189] vfs_link+0x5b4/0x744 [ 82.660505][ T5189] do_linkat+0x258/0x750 [ 82.661177][ T5189] __arm64_sys_linkat+0xe4/0x100 [ 82.662046][ T5189] invoke_syscall+0x98/0x2b0 [ 82.662820][ T5189] el0_svc_common+0x138/0x258 [ 82.663556][ T5189] do_el0_svc+0x58/0x13c [ 82.664290][ T5189] el0_svc+0x78/0x1d0 [ 82.664958][ T5189] el0t_64_sync_handler+0xcc/0xe4 [ 82.665902][ T5189] el0t_64_sync+0x1a0/0x1a4 [ 82.666653][ T5189] irq event stamp: 83248 [ 82.667326][ T5189] hardirqs last enabled at (83247): [] __up_console_sem+0xb4/0xfc [ 82.668790][ T5189] hardirqs last disabled at (83248): [] el1_dbg+0x24/0x80 [ 82.670210][ T5189] softirqs last enabled at (83228): [] handle_softirqs+0xa40/0xbe4 [ 82.671864][ T5189] softirqs last disabled at (83161): [] __irq_exit_rcu+0x240/0x43c [ 82.673371][ T5189] ---[ end trace cf16be9f527b4bc6 ]--- [ 82.689347][ T5189] BTRFS: error (device loop0) in btrfs_add_link:6776: errno=-12 Out of memory [ 82.954310][ T5211] BTRFS: device fsid ed167579-eb65-4e76-9a50-61ac97e9b59d devid 1 transid 8 /dev/loop0 scanned by syz.0.29 (5211) [ 82.971870][ T5211] FAULT_INJECTION: forcing a failure. [ 82.971870][ T5211] name failslab, interval 1, probability 0, space 0, times 0 [ 82.974175][ T5211] CPU: 1 PID: 5211 Comm: syz.0.29 Tainted: G W syzkaller #0 [ 82.975531][ T5211] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/26/2026 [ 82.977107][ T5211] Call trace: [ 82.977651][ T5211] dump_backtrace+0x0/0x458 [ 82.978330][ T5211] show_stack+0x2c/0x3c [ 82.979000][ T5211] __dump_stack+0x30/0x40 [ 82.979698][ T5211] dump_stack_lvl+0xf4/0x15c [ 82.980446][ T5211] dump_stack+0x1c/0x5c [ 82.981120][ T5211] should_fail+0x3bc/0x514 [ 82.981906][ T5211] __should_failslab+0xbc/0x10c [ 82.982706][ T5211] should_failslab+0x10/0x28 [ 82.983527][ T5211] slab_pre_alloc_hook+0x64/0xe8 [ 82.984310][ T5211] kmem_cache_alloc+0x94/0x3d4 [ 82.985104][ T5211] btrfs_alloc_path+0x5c/0x68 [ 82.985907][ T5211] btrfs_insert_inode_ref+0xf0/0xa2c [ 82.986800][ T5211] btrfs_add_link+0x248/0xa9c [ 82.987619][ T5211] btrfs_link+0x3a4/0x694 [ 82.988344][ T5211] vfs_link+0x5b4/0x744 [ 82.988989][ T5211] do_linkat+0x258/0x750 [ 82.989694][ T5211] __arm64_sys_linkat+0xe4/0x100 [ 82.990381][ T5211] invoke_syscall+0x98/0x2b0 [ 82.991143][ T5211] el0_svc_common+0x138/0x258 [ 82.991940][ T5211] do_el0_svc+0x58/0x13c [ 82.992628][ T5211] el0_svc+0x78/0x1d0 [ 82.993290][ T5211] el0t_64_sync_handler+0xcc/0xe4 [ 82.994083][ T5211] el0t_64_sync+0x1a0/0x1a4 [ 83.248101][ T5232] BTRFS: device fsid ed167579-eb65-4e76-9a50-61ac97e9b59d devid 1 transid 8 /dev/loop0 scanned by syz.0.30 (5232) [ 83.267312][ T5232] FAULT_INJECTION: forcing a failure. [ 83.267312][ T5232] name failslab, interval 1, probability 0, space 0, times 0 [ 83.269492][ T5232] CPU: 1 PID: 5232 Comm: syz.0.30 Tainted: G W syzkaller #0 [ 83.270867][ T5232] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/26/2026 [ 83.272578][ T5232] Call trace: [ 83.273158][ T5232] dump_backtrace+0x0/0x458 [ 83.273955][ T5232] show_stack+0x2c/0x3c [ 83.274660][ T5232] __dump_stack+0x30/0x40 [ 83.275325][ T5232] dump_stack_lvl+0xf4/0x15c [ 83.276063][ T5232] dump_stack+0x1c/0x5c [ 83.276749][ T5232] should_fail+0x3bc/0x514 [ 83.277534][ T5232] __should_failslab+0xbc/0x10c [ 83.278290][ T5232] should_failslab+0x10/0x28 [ 83.278991][ T5232] slab_pre_alloc_hook+0x64/0xe8 [ 83.279802][ T5232] kmem_cache_alloc+0x94/0x3d4 [ 83.280536][ T5232] btrfs_alloc_path+0x5c/0x68 [ 83.281302][ T5232] btrfs_insert_inode_ref+0xf0/0xa2c [ 83.282157][ T5232] btrfs_add_link+0x248/0xa9c [ 83.282983][ T5232] btrfs_link+0x3a4/0x694 [ 83.283694][ T5232] vfs_link+0x5b4/0x744 [ 83.284359][ T5232] do_linkat+0x258/0x750 [ 83.285077][ T5232] __arm64_sys_linkat+0xe4/0x100 [ 83.285894][ T5232] invoke_syscall+0x98/0x2b0 [ 83.286582][ T5232] el0_svc_common+0x138/0x258 [ 83.287295][ T5232] do_el0_svc+0x58/0x13c [ 83.287936][ T5232] el0_svc+0x78/0x1d0 [ 83.288573][ T5232] el0t_64_sync_handler+0xcc/0xe4 [ 83.289378][ T5232] el0t_64_sync+0x1a0/0x1a4 [ 83.524419][ T5254] BTRFS: device fsid ed167579-eb65-4e76-9a50-61ac97e9b59d devid 1 transid 8 /dev/loop0 scanned by syz.0.31 (5254) [ 83.588083][ T5254] FAULT_INJECTION: forcing a failure. [ 83.588083][ T5254] name failslab, interval 1, probability 0, space 0, times 0 [ 83.590102][ T5254] CPU: 1 PID: 5254 Comm: syz.0.31 Tainted: G W syzkaller #0 [ 83.591578][ T5254] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/26/2026 [ 83.593095][ T5254] Call trace: [ 83.593623][ T5254] dump_backtrace+0x0/0x458 [ 83.594352][ T5254] show_stack+0x2c/0x3c [ 83.595034][ T5254] __dump_stack+0x30/0x40 [ 83.595740][ T5254] dump_stack_lvl+0xf4/0x15c [ 83.596471][ T5254] dump_stack+0x1c/0x5c [ 83.597147][ T5254] should_fail+0x3bc/0x514 [ 83.597903][ T5254] __should_failslab+0xbc/0x10c [ 83.598707][ T5254] should_failslab+0x10/0x28 [ 83.599551][ T5254] slab_pre_alloc_hook+0x64/0xe8 [ 83.600364][ T5254] kmem_cache_alloc+0x94/0x3d4 [ 83.601206][ T5254] start_transaction+0x4d0/0x13ec [ 83.602070][ T5254] btrfs_start_transaction+0x34/0x44 [ 83.603082][ T5254] btrfs_link+0x1f0/0x694 [ 83.603776][ T5254] vfs_link+0x5b4/0x744 [ 83.604484][ T5254] do_linkat+0x258/0x750 [ 83.605191][ T5254] __arm64_sys_linkat+0xe4/0x100 [ 83.606026][ T5254] invoke_syscall+0x98/0x2b0 [ 83.606806][ T5254] el0_svc_common+0x138/0x258 [ 83.607564][ T5254] do_el0_svc+0x58/0x13c [ 83.608253][ T5254] el0_svc+0x78/0x1d0 [ 83.608916][ T5254] el0t_64_sync_handler+0xcc/0xe4 [ 83.609766][ T5254] el0t_64_sync+0x1a0/0x1a4 [ 83.765176][ T5276] BTRFS: device fsid ed167579-eb65-4e76-9a50-61ac97e9b59d devid 1 transid 8 /dev/loop0 scanned by syz.0.32 (5276) [ 83.790079][ T5276] FAULT_INJECTION: forcing a failure. [ 83.790079][ T5276] name failslab, interval 1, probability 0, space 0, times 0 [ 83.792218][ T5276] CPU: 0 PID: 5276 Comm: syz.0.32 Tainted: G W syzkaller #0 [ 83.793772][ T5276] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/26/2026 [ 83.795470][ T5276] Call trace: [ 83.795987][ T5276] dump_backtrace+0x0/0x458 [ 83.796716][ T5276] show_stack+0x2c/0x3c [ 83.797379][ T5276] __dump_stack+0x30/0x40 [ 83.798138][ T5276] dump_stack_lvl+0xf4/0x15c [ 83.798968][ T5276] dump_stack+0x1c/0x5c [ 83.799707][ T5276] should_fail+0x3bc/0x514 [ 83.800440][ T5276] __should_failslab+0xbc/0x10c [ 83.801235][ T5276] should_failslab+0x10/0x28 [ 83.801964][ T5276] slab_pre_alloc_hook+0x64/0xe8 [ 83.802773][ T5276] kmem_cache_alloc+0x94/0x3d4 [ 83.803543][ T5276] btrfs_alloc_path+0x5c/0x68 [ 83.804293][ T5276] btrfs_insert_dir_item+0x184/0x3e8 [ 83.805242][ T5276] btrfs_add_link+0x2b0/0xa9c [ 83.805990][ T5276] btrfs_link+0x3a4/0x694 [ 83.806728][ T5276] vfs_link+0x5b4/0x744 [ 83.807365][ T5276] do_linkat+0x258/0x750 [ 83.808115][ T5276] __arm64_sys_linkat+0xe4/0x100 [ 83.808948][ T5276] invoke_syscall+0x98/0x2b0 [ 83.809722][ T5276] el0_svc_common+0x138/0x258 [ 83.810524][ T5276] do_el0_svc+0x58/0x13c [ 83.811230][ T5276] el0_svc+0x78/0x1d0 [ 83.811863][ T5276] el0t_64_sync_handler+0xcc/0xe4 [ 83.812698][ T5276] el0t_64_sync+0x1a0/0x1a4 [ 83.814967][ T5276] ------------[ cut here ]------------ [ 83.815898][ T5276] WARNING: CPU: 0 PID: 5276 at fs/btrfs/inode.c:6776 btrfs_add_link+0x718/0xa9c [ 83.817310][ T5276] Modules linked in: [ 83.817942][ T5276] CPU: 0 PID: 5276 Comm: syz.0.32 Tainted: G W syzkaller #0 [ 83.819400][ T5276] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/26/2026 [ 83.821002][ T5276] pstate: 62400005 (nZCv daif +PAN -UAO +TCO -DIT -SSBS BTYPE=--) [ 83.822214][ T5276] pc : btrfs_add_link+0x718/0xa9c [ 83.823088][ T5276] lr : btrfs_add_link+0x718/0xa9c [ 83.823944][ T5276] sp : ffff800020bc79e0 [ 83.824579][ T5276] x29: ffff800020bc7ae0 x28: ffff0000deb89840 x27: 0000000000000107 [ 83.825848][ T5276] x26: 00000000fffffff4 x25: 0000000000000001 x24: dfff800000000000 [ 83.827113][ T5276] x23: 0000000000000005 x22: 1fffe0001bd71313 x21: ffff700004178f44 [ 83.828432][ T5276] x20: 00000000fffffff4 x19: ffff0000deb89898 x18: 0000000000000001 [ 83.829712][ T5276] x17: 0000000000000000 x16: ffff80001125a830 x15: 00000000ffffffff [ 83.831105][ T5276] x14: 0000000000000001 x13: 1fffe000341f05ab x12: 0000000000ff0100 [ 83.832422][ T5276] x11: 0000000000000000 x10: 0000000000000000 x9 : 235c9f23a42fce00 [ 83.833813][ T5276] x8 : 235c9f23a42fce00 x7 : 0000000000000001 x6 : 0000000000000001 [ 83.835095][ T5276] x5 : ffff800020bc72f8 x4 : ffff80001437f3e0 x3 : ffff800008508edc [ 83.836386][ T5276] x2 : 0000000000000001 x1 : 0000000100000000 x0 : 0000000000000026 [ 83.837719][ T5276] Call trace: [ 83.838270][ T5276] btrfs_add_link+0x718/0xa9c [ 83.839026][ T5276] btrfs_link+0x3a4/0x694 [ 83.839786][ T5276] vfs_link+0x5b4/0x744 [ 83.840488][ T5276] do_linkat+0x258/0x750 [ 83.841146][ T5276] __arm64_sys_linkat+0xe4/0x100 [ 83.841906][ T5276] invoke_syscall+0x98/0x2b0 [ 83.842676][ T5276] el0_svc_common+0x138/0x258 [ 83.843418][ T5276] do_el0_svc+0x58/0x13c [ 83.844091][ T5276] el0_svc+0x78/0x1d0 [ 83.844781][ T5276] el0t_64_sync_handler+0xcc/0xe4 [ 83.845538][ T5276] el0t_64_sync+0x1a0/0x1a4 [ 83.846285][ T5276] irq event stamp: 81194 [ 83.847031][ T5276] hardirqs last enabled at (81193): [] __up_console_sem+0xb4/0xfc [ 83.848573][ T5276] hardirqs last disabled at (81194): [] el1_dbg+0x24/0x80 [ 83.849966][ T5276] softirqs last enabled at (81174): [] handle_softirqs+0xa40/0xbe4 [ 83.851543][ T5276] softirqs last disabled at (81153): [] __irq_exit_rcu+0x240/0x43c [ 83.853028][ T5276] ---[ end trace cf16be9f527b4bc7 ]--- [ 83.855895][ T5276] BTRFS: error (device loop0) in btrfs_add_link:6776: errno=-12 Out of memory [ 84.085899][ T5298] BTRFS: device fsid ed167579-eb65-4e76-9a50-61ac97e9b59d devid 1 transid 8 /dev/loop0 scanned by syz.0.33 (5298) [ 84.109808][ T5298] btrfs_printk: 224 callbacks suppressed [ 84.109820][ T5298] BTRFS info (device loop0): clearing free space tree [ 84.111855][ T5298] BTRFS info (device loop0): clearing compat-ro feature flag for FREE_SPACE_TREE (0x1) [ 84.114223][ T5298] BTRFS info (device loop0): clearing compat-ro feature flag for FREE_SPACE_TREE_VALID (0x2) [ 84.117890][ T5298] BTRFS info (device loop0): creating free space tree [ 84.119482][ T5298] BTRFS info (device loop0): setting compat-ro feature flag for FREE_SPACE_TREE (0x1) [ 84.121083][ T5298] BTRFS info (device loop0): setting compat-ro feature flag for FREE_SPACE_TREE_VALID (0x2) [ 84.126437][ T5298] FAULT_INJECTION: forcing a failure. [ 84.126437][ T5298] name failslab, interval 1, probability 0, space 0, times 0 [ 84.128511][ T5298] CPU: 0 PID: 5298 Comm: syz.0.33 Tainted: G W syzkaller #0 [ 84.129891][ T5298] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/26/2026 [ 84.131750][ T5298] Call trace: [ 84.132281][ T5298] dump_backtrace+0x0/0x458 [ 84.133046][ T5298] show_stack+0x2c/0x3c [ 84.133734][ T5298] __dump_stack+0x30/0x40 [ 84.134433][ T5298] dump_stack_lvl+0xf4/0x15c [ 84.135164][ T5298] dump_stack+0x1c/0x5c [ 84.135837][ T5298] should_fail+0x3bc/0x514 [ 84.136566][ T5298] __should_failslab+0xbc/0x10c [ 84.137350][ T5298] should_failslab+0x10/0x28 [ 84.138086][ T5298] slab_pre_alloc_hook+0x64/0xe8 [ 84.138859][ T5298] kmem_cache_alloc+0x94/0x3d4 [ 84.139610][ T5298] btrfs_alloc_path+0x5c/0x68 [ 84.140330][ T5298] btrfs_insert_dir_item+0x184/0x3e8 [ 84.141193][ T5298] btrfs_add_link+0x2b0/0xa9c [ 84.141994][ T5298] btrfs_link+0x3a4/0x694 [ 84.142686][ T5298] vfs_link+0x5b4/0x744 [ 84.143311][ T5298] do_linkat+0x258/0x750 [ 84.144065][ T5298] __arm64_sys_linkat+0xe4/0x100 [ 84.144825][ T5298] invoke_syscall+0x98/0x2b0 [ 84.145565][ T5298] el0_svc_common+0x138/0x258 [ 84.146382][ T5298] do_el0_svc+0x58/0x13c [ 84.147078][ T5298] el0_svc+0x78/0x1d0 [ 84.147805][ T5298] el0t_64_sync_handler+0xcc/0xe4 [ 84.148649][ T5298] el0t_64_sync+0x1a0/0x1a4 [ 84.150212][ T5298] ------------[ cut here ]------------ [ 84.151194][ T5298] WARNING: CPU: 0 PID: 5298 at fs/btrfs/inode.c:6776 btrfs_add_link+0x718/0xa9c [ 84.152579][ T5298] Modules linked in: [ 84.153210][ T5298] CPU: 0 PID: 5298 Comm: syz.0.33 Tainted: G W syzkaller #0 [ 84.154561][ T5298] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/26/2026 [ 84.156297][ T5298] pstate: 62400005 (nZCv daif +PAN -UAO +TCO -DIT -SSBS BTYPE=--) [ 84.157548][ T5298] pc : btrfs_add_link+0x718/0xa9c [ 84.158396][ T5298] lr : btrfs_add_link+0x718/0xa9c [ 84.159267][ T5298] sp : ffff8000216579e0 [ 84.159872][ T5298] x29: ffff800021657ae0 x28: ffff0000deb89b00 x27: 0000000000000107 [ 84.161110][ T5298] x26: 00000000fffffff4 x25: 0000000000000001 x24: dfff800000000000 [ 84.162460][ T5298] x23: 0000000000000005 x22: 1fffe0001bd7136b x21: ffff7000042caf44 [ 84.163724][ T5298] x20: 00000000fffffff4 x19: ffff0000deb89b58 x18: 0000000000000001 [ 84.165152][ T5298] x17: 0000000000000000 x16: ffff80001125a830 x15: 00000000ffffffff [ 84.166402][ T5298] x14: 0000000000000001 x13: 1fffe000341f05ab x12: 0000000000ff0100 [ 84.167716][ T5298] x11: 0000000000000000 x10: 0000000000000000 x9 : 618067515d0c6600 [ 84.169002][ T5298] x8 : 618067515d0c6600 x7 : 0000000000000001 x6 : 0000000000000001 [ 84.170334][ T5298] x5 : ffff8000216572f8 x4 : ffff80001437f3e0 x3 : ffff800008508edc [ 84.171648][ T5298] x2 : 0000000000000001 x1 : 0000000100000000 x0 : 0000000000000026 [ 84.172952][ T5298] Call trace: [ 84.173484][ T5298] btrfs_add_link+0x718/0xa9c [ 84.174244][ T5298] btrfs_link+0x3a4/0x694 [ 84.174941][ T5298] vfs_link+0x5b4/0x744 [ 84.175603][ T5298] do_linkat+0x258/0x750 [ 84.176301][ T5298] __arm64_sys_linkat+0xe4/0x100 [ 84.177124][ T5298] invoke_syscall+0x98/0x2b0 [ 84.177846][ T5298] el0_svc_common+0x138/0x258 [ 84.178591][ T5298] do_el0_svc+0x58/0x13c [ 84.179366][ T5298] el0_svc+0x78/0x1d0 [ 84.180041][ T5298] el0t_64_sync_handler+0xcc/0xe4 [ 84.180889][ T5298] el0t_64_sync+0x1a0/0x1a4 [ 84.181661][ T5298] irq event stamp: 81966 [ 84.182342][ T5298] hardirqs last enabled at (81965): [] __up_console_sem+0xb4/0xfc [ 84.184001][ T5298] hardirqs last disabled at (81966): [] el1_dbg+0x24/0x80 [ 84.185463][ T5298] softirqs last enabled at (81946): [] handle_softirqs+0xa40/0xbe4 [ 84.186982][ T5298] softirqs last disabled at (81923): [] __irq_exit_rcu+0x240/0x43c [ 84.188551][ T5298] ---[ end trace cf16be9f527b4bc8 ]--- [ 84.190224][ T5298] BTRFS: error (device loop0) in btrfs_add_link:6776: errno=-12 Out of memory [ 84.191716][ T5298] BTRFS info (device loop0): forced readonly 1970/01/01 00:01:24 executed programs: 20 [ 84.384019][ T5320] set_capacity_and_notify: 8 callbacks suppressed [ 84.384029][ T5320] loop0: detected capacity change from 0 to 32768 [ 84.428439][ T5320] BTRFS: device fsid ed167579-eb65-4e76-9a50-61ac97e9b59d devid 1 transid 8 /dev/loop0 scanned by syz.0.34 (5320) [ 84.433280][ T5320] BTRFS info (device loop0): using sha256 (sha256-ce) checksum algorithm [ 84.434680][ T5320] BTRFS info (device loop0): metadata ratio 1025 [ 84.435745][ T5320] BTRFS info (device loop0): doing ref verification [ 84.436923][ T5320] BTRFS info (device loop0): force clearing of disk cache [ 84.438019][ T5320] BTRFS info (device loop0): turning off barriers [ 84.439181][ T5320] BTRFS info (device loop0): setting nodatacow, compression disabled [ 84.440490][ T5320] BTRFS info (device loop0): enabling ssd optimizations [ 84.441553][ T5320] BTRFS info (device loop0): using spread ssd allocation scheme [ 84.443392][ T5320] BTRFS info (device loop0): not using ssd optimizations [ 84.444500][ T5320] BTRFS info (device loop0): not using spread ssd allocation scheme [ 84.445795][ T5320] BTRFS info (device loop0): using free space tree [ 84.446839][ T5320] BTRFS info (device loop0): has skinny extents [ 84.455287][ T5320] BTRFS info (device loop0): clearing free space tree [ 84.456366][ T5320] BTRFS info (device loop0): clearing compat-ro feature flag for FREE_SPACE_TREE (0x1) [ 84.457941][ T5320] BTRFS info (device loop0): clearing compat-ro feature flag for FREE_SPACE_TREE_VALID (0x2) [ 84.461544][ T5320] BTRFS info (device loop0): creating free space tree [ 84.465023][ T5320] BTRFS info (device loop0): setting compat-ro feature flag for FREE_SPACE_TREE (0x1) [ 84.466575][ T5320] BTRFS info (device loop0): setting compat-ro feature flag for FREE_SPACE_TREE_VALID (0x2) [ 84.471087][ T5320] FAULT_INJECTION: forcing a failure. [ 84.471087][ T5320] name failslab, interval 1, probability 0, space 0, times 0 [ 84.473596][ T5320] CPU: 1 PID: 5320 Comm: syz.0.34 Tainted: G W syzkaller #0 [ 84.474925][ T5320] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/26/2026 [ 84.476652][ T5320] Call trace: [ 84.477181][ T5320] dump_backtrace+0x0/0x458 [ 84.477932][ T5320] show_stack+0x2c/0x3c [ 84.478586][ T5320] __dump_stack+0x30/0x40 [ 84.479264][ T5320] dump_stack_lvl+0xf4/0x15c [ 84.480027][ T5320] dump_stack+0x1c/0x5c [ 84.480733][ T5320] should_fail+0x3bc/0x514 [ 84.481476][ T5320] __should_failslab+0xbc/0x10c [ 84.482290][ T5320] should_failslab+0x10/0x28 [ 84.483113][ T5320] slab_pre_alloc_hook+0x64/0xe8 [ 84.484001][ T5320] kmem_cache_alloc+0x94/0x3d4 [ 84.484822][ T5320] btrfs_alloc_path+0x5c/0x68 [ 84.485626][ T5320] btrfs_insert_inode_ref+0xf0/0xa2c [ 84.486465][ T5320] btrfs_add_link+0x248/0xa9c [ 84.487251][ T5320] btrfs_link+0x3a4/0x694 [ 84.487943][ T5320] vfs_link+0x5b4/0x744 [ 84.488654][ T5320] do_linkat+0x258/0x750 [ 84.489351][ T5320] __arm64_sys_linkat+0xe4/0x100 [ 84.490155][ T5320] invoke_syscall+0x98/0x2b0 [ 84.490896][ T5320] el0_svc_common+0x138/0x258 [ 84.491691][ T5320] do_el0_svc+0x58/0x13c [ 84.492424][ T5320] el0_svc+0x78/0x1d0 [ 84.493065][ T5320] el0t_64_sync_handler+0xcc/0xe4 [ 84.493869][ T5320] el0t_64_sync+0x1a0/0x1a4 [ 84.544752][ T4910] BTRFS: device fsid ed167579-eb65-4e76-9a50-61ac97e9b59d devid 1 transid 12 /dev/loop0 scanned by udevd (4910) [ 84.647415][ T5342] loop0: detected capacity change from 0 to 32768 [ 84.763945][ T5342] BTRFS info (device loop0): using sha256 (sha256-ce) checksum algorithm [ 84.765477][ T5342] BTRFS info (device loop0): metadata ratio 1025 [ 84.766664][ T5342] BTRFS info (device loop0): doing ref verification [ 84.767780][ T5342] BTRFS info (device loop0): force clearing of disk cache [ 84.768905][ T5342] BTRFS info (device loop0): turning off barriers [ 84.769946][ T5342] BTRFS info (device loop0): setting nodatacow, compression disabled [ 84.771219][ T5342] BTRFS info (device loop0): enabling ssd optimizations [ 84.772427][ T5342] BTRFS info (device loop0): using spread ssd allocation scheme [ 84.774622][ T5342] BTRFS info (device loop0): not using ssd optimizations [ 84.775726][ T5342] BTRFS info (device loop0): not using spread ssd allocation scheme [ 84.776955][ T5342] BTRFS info (device loop0): using free space tree [ 84.777978][ T5342] BTRFS info (device loop0): has skinny extents [ 84.787367][ T5342] BTRFS info (device loop0): clearing free space tree [ 84.788544][ T5342] BTRFS info (device loop0): clearing compat-ro feature flag for FREE_SPACE_TREE (0x1) [ 84.790188][ T5342] BTRFS info (device loop0): clearing compat-ro feature flag for FREE_SPACE_TREE_VALID (0x2) [ 84.794701][ T5342] BTRFS info (device loop0): creating free space tree [ 84.796266][ T5342] BTRFS info (device loop0): setting compat-ro feature flag for FREE_SPACE_TREE (0x1) [ 84.797940][ T5342] BTRFS info (device loop0): setting compat-ro feature flag for FREE_SPACE_TREE_VALID (0x2) [ 84.802595][ T5342] FAULT_INJECTION: forcing a failure. [ 84.802595][ T5342] name failslab, interval 1, probability 0, space 0, times 0 [ 84.805115][ T5342] CPU: 1 PID: 5342 Comm: syz.0.35 Tainted: G W syzkaller #0 [ 84.806494][ T5342] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/26/2026 [ 84.808111][ T5342] Call trace: [ 84.808647][ T5342] dump_backtrace+0x0/0x458 [ 84.809404][ T5342] show_stack+0x2c/0x3c [ 84.810035][ T5342] __dump_stack+0x30/0x40 [ 84.810708][ T5342] dump_stack_lvl+0xf4/0x15c [ 84.811445][ T5342] dump_stack+0x1c/0x5c [ 84.812204][ T5342] should_fail+0x3bc/0x514 [ 84.812929][ T5342] __should_failslab+0xbc/0x10c [ 84.812950][ T5342] should_failslab+0x10/0x28 [ 84.812957][ T5342] slab_pre_alloc_hook+0x64/0xe8 [ 84.815240][ T5342] kmem_cache_alloc+0x94/0x3d4 [ 84.816060][ T5342] btrfs_alloc_path+0x5c/0x68 [ 84.816832][ T5342] btrfs_insert_dir_item+0x184/0x3e8 [ 84.817780][ T5342] btrfs_add_link+0x2b0/0xa9c [ 84.818523][ T5342] btrfs_link+0x3a4/0x694 [ 84.819241][ T5342] vfs_link+0x5b4/0x744 [ 84.819928][ T5342] do_linkat+0x258/0x750 [ 84.820648][ T5342] __arm64_sys_linkat+0xe4/0x100 [ 84.821503][ T5342] invoke_syscall+0x98/0x2b0 [ 84.822228][ T5342] el0_svc_common+0x138/0x258 [ 84.822928][ T5342] do_el0_svc+0x58/0x13c [ 84.823600][ T5342] el0_svc+0x78/0x1d0 [ 84.824208][ T5342] el0t_64_sync_handler+0xcc/0xe4 [ 84.825044][ T5342] el0t_64_sync+0x1a0/0x1a4 [ 84.827475][ T5342] ------------[ cut here ]------------ [ 84.828447][ T5342] WARNING: CPU: 1 PID: 5342 at fs/btrfs/inode.c:6776 btrfs_add_link+0x718/0xa9c [ 84.829859][ T5342] Modules linked in: [ 84.830498][ T5342] CPU: 1 PID: 5342 Comm: syz.0.35 Tainted: G W syzkaller #0 [ 84.831883][ T5342] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/26/2026 [ 84.833602][ T5342] pstate: 62400005 (nZCv daif +PAN -UAO +TCO -DIT -SSBS BTYPE=--) [ 84.834824][ T5342] pc : btrfs_add_link+0x718/0xa9c [ 84.835723][ T5342] lr : btrfs_add_link+0x718/0xa9c [ 84.836543][ T5342] sp : ffff8000210179e0 [ 84.837229][ T5342] x29: ffff800021017ae0 x28: ffff0000dea4e420 x27: 0000000000000107 [ 84.838624][ T5342] x26: 00000000fffffff4 x25: 0000000000000001 x24: dfff800000000000 [ 84.839992][ T5342] x23: 0000000000000005 x22: 1fffe0001bd49c8f x21: ffff700004202f44 [ 84.841250][ T5342] x20: 00000000fffffff4 x19: ffff0000dea4e478 x18: 0000000000000001 [ 84.842525][ T5342] x17: 0000000000000000 x16: ffff80001125a830 x15: 00000000ffffffff [ 84.843851][ T5342] x14: 0000000000000001 x13: 1fffe000341f47ab x12: 0000000000ff0100 [ 84.845149][ T5342] x11: 0000000000000000 x10: 0000000000000000 x9 : 51d76d9ff5b1d900 [ 84.846458][ T5342] x8 : 51d76d9ff5b1d900 x7 : 0000000000000001 x6 : 0000000000000001 [ 84.847760][ T5342] x5 : ffff8000210172f8 x4 : ffff80001437f3e0 x3 : ffff800008508edc [ 84.849123][ T5342] x2 : 0000000000000001 x1 : 0000000100000000 x0 : 0000000000000026 [ 84.850409][ T5342] Call trace: [ 84.850933][ T5342] btrfs_add_link+0x718/0xa9c [ 84.851693][ T5342] btrfs_link+0x3a4/0x694 [ 84.852386][ T5342] vfs_link+0x5b4/0x744 [ 84.853084][ T5342] do_linkat+0x258/0x750 [ 84.853780][ T5342] __arm64_sys_linkat+0xe4/0x100 [ 84.854560][ T5342] invoke_syscall+0x98/0x2b0 [ 84.855296][ T5342] el0_svc_common+0x138/0x258 [ 84.856049][ T5342] do_el0_svc+0x58/0x13c [ 84.856744][ T5342] el0_svc+0x78/0x1d0 [ 84.857367][ T5342] el0t_64_sync_handler+0xcc/0xe4 [ 84.858239][ T5342] el0t_64_sync+0x1a0/0x1a4 [ 84.858980][ T5342] irq event stamp: 81854 [ 84.859684][ T5342] hardirqs last enabled at (81853): [] __up_console_sem+0xb4/0xfc [ 84.861247][ T5342] hardirqs last disabled at (81854): [] el1_dbg+0x24/0x80 [ 84.862618][ T5342] softirqs last enabled at (81834): [] handle_softirqs+0xa40/0xbe4 [ 84.864184][ T5342] softirqs last disabled at (81745): [] __irq_exit_rcu+0x240/0x43c [ 84.865737][ T5342] ---[ end trace cf16be9f527b4bc9 ]--- [ 84.868514][ T5342] BTRFS: error (device loop0) in btrfs_add_link:6776: errno=-12 Out of memory [ 84.869991][ T5342] BTRFS info (device loop0): forced readonly [ 85.021642][ T5364] loop0: detected capacity change from 0 to 32768 [ 85.047364][ T5364] BTRFS: device fsid ed167579-eb65-4e76-9a50-61ac97e9b59d devid 1 transid 8 /dev/loop0 scanned by syz.0.36 (5364) [ 85.051231][ T5364] BTRFS info (device loop0): using sha256 (sha256-ce) checksum algorithm [ 85.052624][ T5364] BTRFS info (device loop0): metadata ratio 1025 [ 85.054180][ T5364] BTRFS info (device loop0): doing ref verification [ 85.055209][ T5364] BTRFS info (device loop0): force clearing of disk cache [ 85.056497][ T5364] BTRFS info (device loop0): turning off barriers [ 85.057615][ T5364] BTRFS info (device loop0): setting nodatacow, compression disabled [ 85.058871][ T5364] BTRFS info (device loop0): enabling ssd optimizations [ 85.059966][ T5364] BTRFS info (device loop0): using spread ssd allocation scheme [ 85.061194][ T5364] BTRFS info (device loop0): not using ssd optimizations [ 85.062251][ T5364] BTRFS info (device loop0): not using spread ssd allocation scheme [ 85.064043][ T5364] BTRFS info (device loop0): using free space tree [ 85.065103][ T5364] BTRFS info (device loop0): has skinny extents [ 85.073105][ T5364] BTRFS info (device loop0): clearing free space tree [ 85.074228][ T5364] BTRFS info (device loop0): clearing compat-ro feature flag for FREE_SPACE_TREE (0x1) [ 85.075751][ T5364] BTRFS info (device loop0): clearing compat-ro feature flag for FREE_SPACE_TREE_VALID (0x2) [ 85.079411][ T5364] BTRFS info (device loop0): creating free space tree [ 85.080763][ T5364] BTRFS info (device loop0): setting compat-ro feature flag for FREE_SPACE_TREE (0x1) [ 85.082214][ T5364] BTRFS info (device loop0): setting compat-ro feature flag for FREE_SPACE_TREE_VALID (0x2) [ 85.087225][ T5364] FAULT_INJECTION: forcing a failure. [ 85.087225][ T5364] name failslab, interval 1, probability 0, space 0, times 0 [ 85.089305][ T5364] CPU: 1 PID: 5364 Comm: syz.0.36 Tainted: G W syzkaller #0 [ 85.090637][ T5364] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/26/2026 [ 85.092298][ T5364] Call trace: [ 85.092807][ T5364] dump_backtrace+0x0/0x458 [ 85.093555][ T5364] show_stack+0x2c/0x3c [ 85.094196][ T5364] __dump_stack+0x30/0x40 [ 85.094910][ T5364] dump_stack_lvl+0xf4/0x15c [ 85.095655][ T5364] dump_stack+0x1c/0x5c [ 85.096288][ T5364] should_fail+0x3bc/0x514 [ 85.097102][ T5364] __should_failslab+0xbc/0x10c [ 85.097917][ T5364] should_failslab+0x10/0x28 [ 85.098696][ T5364] slab_pre_alloc_hook+0x64/0xe8 [ 85.099554][ T5364] kmem_cache_alloc+0x94/0x3d4 [ 85.100358][ T5364] btrfs_alloc_path+0x5c/0x68 [ 85.101185][ T5364] btrfs_insert_dir_item+0x184/0x3e8 [ 85.102062][ T5364] btrfs_add_link+0x2b0/0xa9c [ 85.102859][ T5364] btrfs_link+0x3a4/0x694 [ 85.103606][ T5364] vfs_link+0x5b4/0x744 [ 85.104296][ T5364] do_linkat+0x258/0x750 [ 85.105005][ T5364] __arm64_sys_linkat+0xe4/0x100 [ 85.105800][ T5364] invoke_syscall+0x98/0x2b0 [ 85.106595][ T5364] el0_svc_common+0x138/0x258 [ 85.107446][ T5364] do_el0_svc+0x58/0x13c [ 85.108179][ T5364] el0_svc+0x78/0x1d0 [ 85.108854][ T5364] el0t_64_sync_handler+0xcc/0xe4 [ 85.109666][ T5364] el0t_64_sync+0x1a0/0x1a4 [ 85.111545][ T5364] ------------[ cut here ]------------ [ 85.112562][ T5364] WARNING: CPU: 1 PID: 5364 at fs/btrfs/inode.c:6776 btrfs_add_link+0x718/0xa9c [ 85.114061][ T5364] Modules linked in: [ 85.114709][ T5364] CPU: 1 PID: 5364 Comm: syz.0.36 Tainted: G W syzkaller #0 [ 85.116109][ T5364] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/26/2026 [ 85.117635][ T5364] pstate: 62400005 (nZCv daif +PAN -UAO +TCO -DIT -SSBS BTYPE=--) [ 85.118875][ T5364] pc : btrfs_add_link+0x718/0xa9c [ 85.119663][ T5364] lr : btrfs_add_link+0x718/0xa9c [ 85.120492][ T5364] sp : ffff8000218879e0 [ 85.121184][ T5364] x29: ffff800021887ae0 x28: ffff0000dea4e160 x27: 0000000000000107 [ 85.122481][ T5364] x26: 00000000fffffff4 x25: 0000000000000001 x24: dfff800000000000 [ 85.123906][ T5364] x23: 0000000000000005 x22: 1fffe0001bd49c37 x21: ffff700004310f44 [ 85.125226][ T5364] x20: 00000000fffffff4 x19: ffff0000dea4e1b8 x18: 0000000000000001 [ 85.126553][ T5364] x17: 0000000000000000 x16: ffff80001125a830 x15: 00000000ffffffff [ 85.127889][ T5364] x14: 0000000000000001 x13: 1fffe000341f47ab x12: 0000000000ff0100 [ 85.129178][ T5364] x11: 0000000000000000 x10: 0000000000000000 x9 : 392527b15a87d000 [ 85.130491][ T5364] x8 : 392527b15a87d000 x7 : 0000000000000001 x6 : 0000000000000001 [ 85.131868][ T5364] x5 : ffff8000218872f8 x4 : ffff80001437f3e0 x3 : ffff800008508edc [ 85.133253][ T5364] x2 : 0000000000000001 x1 : 0000000100000000 x0 : 0000000000000026 [ 85.134593][ T5364] Call trace: [ 85.135174][ T5364] btrfs_add_link+0x718/0xa9c [ 85.135989][ T5364] btrfs_link+0x3a4/0x694 [ 85.136722][ T5364] vfs_link+0x5b4/0x744 [ 85.137389][ T5364] do_linkat+0x258/0x750 [ 85.138101][ T5364] __arm64_sys_linkat+0xe4/0x100 [ 85.138915][ T5364] invoke_syscall+0x98/0x2b0 [ 85.139678][ T5364] el0_svc_common+0x138/0x258 [ 85.140495][ T5364] do_el0_svc+0x58/0x13c [ 85.141387][ T5364] el0_svc+0x78/0x1d0 [ 85.142080][ T5364] el0t_64_sync_handler+0xcc/0xe4 [ 85.142948][ T5364] el0t_64_sync+0x1a0/0x1a4 [ 85.143674][ T5364] irq event stamp: 81254 [ 85.144350][ T5364] hardirqs last enabled at (81253): [] __up_console_sem+0xb4/0xfc [ 85.145911][ T5364] hardirqs last disabled at (81254): [] el1_dbg+0x24/0x80 [ 85.147430][ T5364] softirqs last enabled at (81234): [] handle_softirqs+0xa40/0xbe4 [ 85.149013][ T5364] softirqs last disabled at (81071): [] __irq_exit_rcu+0x240/0x43c [ 85.150560][ T5364] ---[ end trace cf16be9f527b4bca ]--- [ 85.152335][ T5364] BTRFS: error (device loop0) in btrfs_add_link:6776: errno=-12 Out of memory [ 85.153874][ T5364] BTRFS info (device loop0): forced readonly [ 85.350489][ T5386] loop0: detected capacity change from 0 to 32768 [ 85.409343][ T5386] BTRFS: device fsid ed167579-eb65-4e76-9a50-61ac97e9b59d devid 1 transid 8 /dev/loop0 scanned by syz.0.37 (5386) [ 85.415070][ T5386] BTRFS info (device loop0): using sha256 (sha256-ce) checksum algorithm [ 85.416482][ T5386] BTRFS info (device loop0): metadata ratio 1025 [ 85.417458][ T5386] BTRFS info (device loop0): doing ref verification [ 85.418428][ T5386] BTRFS info (device loop0): force clearing of disk cache [ 85.419561][ T5386] BTRFS info (device loop0): turning off barriers [ 85.420580][ T5386] BTRFS info (device loop0): setting nodatacow, compression disabled [ 85.421791][ T5386] BTRFS info (device loop0): enabling ssd optimizations [ 85.432814][ T5386] BTRFS info (device loop0): using spread ssd allocation scheme [ 85.434070][ T5386] BTRFS info (device loop0): not using ssd optimizations [ 85.435152][ T5386] BTRFS info (device loop0): not using spread ssd allocation scheme [ 85.436405][ T5386] BTRFS info (device loop0): using free space tree [ 85.437452][ T5386] BTRFS info (device loop0): has skinny extents [ 85.464704][ T5386] BTRFS info (device loop0): clearing free space tree [ 85.466252][ T5386] BTRFS info (device loop0): clearing compat-ro feature flag for FREE_SPACE_TREE (0x1) [ 85.467735][ T5386] BTRFS info (device loop0): clearing compat-ro feature flag for FREE_SPACE_TREE_VALID (0x2) [ 85.471431][ T5386] BTRFS info (device loop0): creating free space tree [ 85.473767][ T5386] BTRFS info (device loop0): setting compat-ro feature flag for FREE_SPACE_TREE (0x1) [ 85.475335][ T5386] BTRFS info (device loop0): setting compat-ro feature flag for FREE_SPACE_TREE_VALID (0x2) [ 85.479766][ T5386] FAULT_INJECTION: forcing a failure. [ 85.479766][ T5386] name failslab, interval 1, probability 0, space 0, times 0 [ 85.481914][ T5386] CPU: 0 PID: 5386 Comm: syz.0.37 Tainted: G W syzkaller #0 [ 85.483269][ T5386] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/26/2026 [ 85.484812][ T5386] Call trace: [ 85.485375][ T5386] dump_backtrace+0x0/0x458 [ 85.486143][ T5386] show_stack+0x2c/0x3c [ 85.486866][ T5386] __dump_stack+0x30/0x40 [ 85.487631][ T5386] dump_stack_lvl+0xf4/0x15c [ 85.488397][ T5386] dump_stack+0x1c/0x5c [ 85.489105][ T5386] should_fail+0x3bc/0x514 [ 85.489863][ T5386] __should_failslab+0xbc/0x10c [ 85.490632][ T5386] should_failslab+0x10/0x28 [ 85.491349][ T5386] slab_pre_alloc_hook+0x64/0xe8 [ 85.492195][ T5386] kmem_cache_alloc+0x94/0x3d4 [ 85.492993][ T5386] btrfs_alloc_path+0x5c/0x68 [ 85.493790][ T5386] btrfs_insert_dir_item+0x184/0x3e8 [ 85.494682][ T5386] btrfs_add_link+0x2b0/0xa9c [ 85.495473][ T5386] btrfs_link+0x3a4/0x694 [ 85.496165][ T5386] vfs_link+0x5b4/0x744 [ 85.496896][ T5386] do_linkat+0x258/0x750 [ 85.497539][ T5386] __arm64_sys_linkat+0xe4/0x100 [ 85.498321][ T5386] invoke_syscall+0x98/0x2b0 [ 85.499015][ T5386] el0_svc_common+0x138/0x258 [ 85.499822][ T5386] do_el0_svc+0x58/0x13c [ 85.500505][ T5386] el0_svc+0x78/0x1d0 [ 85.501145][ T5386] el0t_64_sync_handler+0xcc/0xe4 [ 85.501963][ T5386] el0t_64_sync+0x1a0/0x1a4 [ 85.503357][ T5386] ------------[ cut here ]------------ [ 85.504300][ T5386] WARNING: CPU: 0 PID: 5386 at fs/btrfs/inode.c:6776 btrfs_add_link+0x718/0xa9c [ 85.505788][ T5386] Modules linked in: [ 85.506455][ T5386] CPU: 0 PID: 5386 Comm: syz.0.37 Tainted: G W syzkaller #0 [ 85.507827][ T5386] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/26/2026 [ 85.509408][ T5386] pstate: 62400005 (nZCv daif +PAN -UAO +TCO -DIT -SSBS BTYPE=--) [ 85.510774][ T5386] pc : btrfs_add_link+0x718/0xa9c [ 85.511590][ T5386] lr : btrfs_add_link+0x718/0xa9c [ 85.512355][ T5386] sp : ffff8000216579e0 [ 85.513041][ T5386] x29: ffff800021657ae0 x28: ffff0000deb89f20 x27: 0000000000000107 [ 85.514334][ T5386] x26: 00000000fffffff4 x25: 0000000000000001 x24: dfff800000000000 [ 85.515634][ T5386] x23: 0000000000000005 x22: 1fffe0001bd713ef x21: ffff7000042caf44 [ 85.516862][ T5386] x20: 00000000fffffff4 x19: ffff0000deb89f78 x18: 0000000000000001 [ 85.518100][ T5386] x17: 0000000000000000 x16: ffff8000083049fc x15: 00000000ffffffff [ 85.519303][ T5386] x14: 0000000000000001 x13: 1ffff000042cae5c x12: 0000000000ff0100 [ 85.520646][ T5386] x11: 0000000000000000 x10: 0000000000000000 x9 : 4b8e6d7d37fdfb00 [ 85.522003][ T5386] x8 : 4b8e6d7d37fdfb00 x7 : 0000000000000001 x6 : 0000000000000001 [ 85.523364][ T5386] x5 : ffff8000216572f8 x4 : ffff80001437f3e0 x3 : ffff800008304b0c [ 85.524743][ T5386] x2 : 0000000000000001 x1 : 0000000100000000 x0 : 0000000000000026 [ 85.526030][ T5386] Call trace: [ 85.526537][ T5386] btrfs_add_link+0x718/0xa9c [ 85.527351][ T5386] btrfs_link+0x3a4/0x694 [ 85.528106][ T5386] vfs_link+0x5b4/0x744 [ 85.528784][ T5386] do_linkat+0x258/0x750 [ 85.529470][ T5386] __arm64_sys_linkat+0xe4/0x100 [ 85.530239][ T5386] invoke_syscall+0x98/0x2b0 [ 85.530990][ T5386] el0_svc_common+0x138/0x258 [ 85.531665][ T5386] do_el0_svc+0x58/0x13c [ 85.532334][ T5386] el0_svc+0x78/0x1d0 [ 85.533012][ T5386] el0t_64_sync_handler+0xcc/0xe4 [ 85.533846][ T5386] el0t_64_sync+0x1a0/0x1a4 [ 85.534608][ T5386] irq event stamp: 82390 [ 85.535533][ T5386] hardirqs last enabled at (82389): [] __up_console_sem+0xb4/0xfc [ 85.537046][ T5386] hardirqs last disabled at (82390): [] el1_dbg+0x24/0x80 [ 85.538434][ T5386] softirqs last enabled at (82370): [] handle_softirqs+0xa40/0xbe4 [ 85.540008][ T5386] softirqs last disabled at (82325): [] __irq_exit_rcu+0x240/0x43c [ 85.541545][ T5386] ---[ end trace cf16be9f527b4bcb ]--- [ 85.542558][ T5386] BTRFS: error (device loop0) in btrfs_add_link:6776: errno=-12 Out of memory [ 85.544048][ T5386] BTRFS info (device loop0): forced readonly [ 85.746039][ T5408] loop0: detected capacity change from 0 to 32768 [ 85.799376][ T5408] BTRFS: device fsid ed167579-eb65-4e76-9a50-61ac97e9b59d devid 1 transid 8 /dev/loop0 scanned by syz.0.38 (5408) [ 85.805038][ T5408] BTRFS info (device loop0): using sha256 (sha256-ce) checksum algorithm [ 85.806539][ T5408] BTRFS info (device loop0): metadata ratio 1025 [ 85.807665][ T5408] BTRFS info (device loop0): doing ref verification [ 85.808736][ T5408] BTRFS info (device loop0): force clearing of disk cache [ 85.809888][ T5408] BTRFS info (device loop0): turning off barriers [ 85.810920][ T5408] BTRFS info (device loop0): setting nodatacow, compression disabled [ 85.812402][ T5408] BTRFS info (device loop0): enabling ssd optimizations [ 85.813684][ T5408] BTRFS info (device loop0): using spread ssd allocation scheme [ 85.814957][ T5408] BTRFS info (device loop0): not using ssd optimizations [ 85.816033][ T5408] BTRFS info (device loop0): not using spread ssd allocation scheme [ 85.817435][ T5408] BTRFS info (device loop0): using free space tree [ 85.818506][ T5408] BTRFS info (device loop0): has skinny extents [ 85.828292][ T5408] BTRFS info (device loop0): clearing free space tree [ 85.829350][ T5408] BTRFS info (device loop0): clearing compat-ro feature flag for FREE_SPACE_TREE (0x1) [ 85.830881][ T5408] BTRFS info (device loop0): clearing compat-ro feature flag for FREE_SPACE_TREE_VALID (0x2) [ 85.834957][ T5408] BTRFS info (device loop0): creating free space tree [ 85.836442][ T5408] BTRFS info (device loop0): setting compat-ro feature flag for FREE_SPACE_TREE (0x1) [ 85.838040][ T5408] BTRFS info (device loop0): setting compat-ro feature flag for FREE_SPACE_TREE_VALID (0x2) [ 85.842413][ T5408] FAULT_INJECTION: forcing a failure. [ 85.842413][ T5408] name failslab, interval 1, probability 0, space 0, times 0 [ 85.845190][ T5408] CPU: 0 PID: 5408 Comm: syz.0.38 Tainted: G W syzkaller #0 [ 85.846526][ T5408] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/26/2026 [ 85.848070][ T5408] Call trace: [ 85.848548][ T5408] dump_backtrace+0x0/0x458 [ 85.849295][ T5408] show_stack+0x2c/0x3c [ 85.849952][ T5408] __dump_stack+0x30/0x40 [ 85.850619][ T5408] dump_stack_lvl+0xf4/0x15c [ 85.851339][ T5408] dump_stack+0x1c/0x5c [ 85.852131][ T5408] should_fail+0x3bc/0x514 [ 85.852809][ T5408] __should_failslab+0xbc/0x10c [ 85.853557][ T5408] should_failslab+0x10/0x28 [ 85.854362][ T5408] slab_pre_alloc_hook+0x64/0xe8 [ 85.855216][ T5408] kmem_cache_alloc+0x94/0x3d4 [ 85.856007][ T5408] btrfs_alloc_path+0x5c/0x68 [ 85.856790][ T5408] btrfs_insert_dir_item+0x184/0x3e8 [ 85.857709][ T5408] btrfs_add_link+0x2b0/0xa9c [ 85.858518][ T5408] btrfs_link+0x3a4/0x694 [ 85.859257][ T5408] vfs_link+0x5b4/0x744 [ 85.859920][ T5408] do_linkat+0x258/0x750 [ 85.860653][ T5408] __arm64_sys_linkat+0xe4/0x100 [ 85.861392][ T5408] invoke_syscall+0x98/0x2b0 [ 85.862107][ T5408] el0_svc_common+0x138/0x258 [ 85.862819][ T5408] do_el0_svc+0x58/0x13c [ 85.863498][ T5408] el0_svc+0x78/0x1d0 [ 85.864233][ T5408] el0t_64_sync_handler+0xcc/0xe4 [ 85.865099][ T5408] el0t_64_sync+0x1a0/0x1a4 [ 85.866267][ T5408] ------------[ cut here ]------------ [ 85.867306][ T5408] WARNING: CPU: 0 PID: 5408 at fs/btrfs/inode.c:6776 btrfs_add_link+0x718/0xa9c [ 85.868724][ T5408] Modules linked in: [ 85.869359][ T5408] CPU: 0 PID: 5408 Comm: syz.0.38 Tainted: G W syzkaller #0 [ 85.870727][ T5408] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/26/2026 [ 85.872297][ T5408] pstate: 62400005 (nZCv daif +PAN -UAO +TCO -DIT -SSBS BTYPE=--) [ 85.873506][ T5408] pc : btrfs_add_link+0x718/0xa9c [ 85.874343][ T5408] lr : btrfs_add_link+0x718/0xa9c [ 85.875176][ T5408] sp : ffff800021be79e0 [ 85.875862][ T5408] x29: ffff800021be7ae0 x28: ffff0000dea1b2c0 x27: 0000000000000107 [ 85.877171][ T5408] x26: 00000000fffffff4 x25: 0000000000000001 x24: dfff800000000000 [ 85.878506][ T5408] x23: 0000000000000005 x22: 1fffe0001bd43663 x21: ffff70000437cf44 [ 85.879909][ T5408] x20: 00000000fffffff4 x19: ffff0000dea1b318 x18: 0000000000000001 [ 85.881231][ T5408] x17: 0000000000000000 x16: ffff8000083049fc x15: 00000000ffffffff [ 85.882625][ T5408] x14: 0000000000000001 x13: 1ffff0000437ce5c x12: 0000000000ff0100 [ 85.883986][ T5408] x11: 0000000000000000 x10: 0000000000000000 x9 : 893240245ddd5300 [ 85.885320][ T5408] x8 : 893240245ddd5300 x7 : 0000000000000001 x6 : 0000000000000001 [ 85.886626][ T5408] x5 : ffff800021be72f8 x4 : ffff80001437f3e0 x3 : ffff800008304b0c [ 85.887945][ T5408] x2 : 0000000000000001 x1 : 0000000100000000 x0 : 0000000000000026 [ 85.889272][ T5408] Call trace: [ 85.889798][ T5408] btrfs_add_link+0x718/0xa9c [ 85.890595][ T5408] btrfs_link+0x3a4/0x694 [ 85.891372][ T5408] vfs_link+0x5b4/0x744 [ 85.892081][ T5408] do_linkat+0x258/0x750 [ 85.892748][ T5408] __arm64_sys_linkat+0xe4/0x100 [ 85.893482][ T5408] invoke_syscall+0x98/0x2b0 [ 85.894252][ T5408] el0_svc_common+0x138/0x258 [ 85.895092][ T5408] do_el0_svc+0x58/0x13c [ 85.895803][ T5408] el0_svc+0x78/0x1d0 [ 85.896469][ T5408] el0t_64_sync_handler+0xcc/0xe4 [ 85.897265][ T5408] el0t_64_sync+0x1a0/0x1a4 [ 85.897986][ T5408] irq event stamp: 81932 [ 85.898698][ T5408] hardirqs last enabled at (81931): [] __up_console_sem+0xb4/0xfc [ 85.900154][ T5408] hardirqs last disabled at (81932): [] el1_dbg+0x24/0x80 [ 85.901624][ T5408] softirqs last enabled at (81912): [] handle_softirqs+0xa40/0xbe4 [ 85.903076][ T5408] softirqs last disabled at (81803): [] __irq_exit_rcu+0x240/0x43c [ 85.904631][ T5408] ---[ end trace cf16be9f527b4bcc ]--- [ 85.905920][ T5408] BTRFS: error (device loop0) in btrfs_add_link:6776: errno=-12 Out of memory [ 86.129908][ T5430] loop0: detected capacity change from 0 to 32768 [ 86.165102][ T5430] BTRFS: device fsid ed167579-eb65-4e76-9a50-61ac97e9b59d devid 1 transid 8 /dev/loop0 scanned by syz.0.39 (5430) [ 86.194916][ T5430] FAULT_INJECTION: forcing a failure. [ 86.194916][ T5430] name failslab, interval 1, probability 0, space 0, times 0 [ 86.197142][ T5430] CPU: 1 PID: 5430 Comm: syz.0.39 Tainted: G W syzkaller #0 [ 86.198558][ T5430] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/26/2026 [ 86.200132][ T5430] Call trace: [ 86.200644][ T5430] dump_backtrace+0x0/0x458 [ 86.201353][ T5430] show_stack+0x2c/0x3c [ 86.202014][ T5430] __dump_stack+0x30/0x40 [ 86.202770][ T5430] dump_stack_lvl+0xf4/0x15c [ 86.203488][ T5430] dump_stack+0x1c/0x5c [ 86.204118][ T5430] should_fail+0x3bc/0x514 [ 86.204815][ T5430] __should_failslab+0xbc/0x10c [ 86.205634][ T5430] should_failslab+0x10/0x28 [ 86.206410][ T5430] slab_pre_alloc_hook+0x64/0xe8 [ 86.207252][ T5430] kmem_cache_alloc+0x94/0x3d4 [ 86.208086][ T5430] btrfs_alloc_path+0x5c/0x68 [ 86.208796][ T5430] btrfs_insert_dir_item+0x184/0x3e8 [ 86.209658][ T5430] btrfs_add_link+0x2b0/0xa9c [ 86.210310][ T5430] btrfs_link+0x3a4/0x694 [ 86.210948][ T5430] vfs_link+0x5b4/0x744 [ 86.211604][ T5430] do_linkat+0x258/0x750 [ 86.212354][ T5430] __arm64_sys_linkat+0xe4/0x100 [ 86.213125][ T5430] invoke_syscall+0x98/0x2b0 [ 86.213870][ T5430] el0_svc_common+0x138/0x258 [ 86.214659][ T5430] do_el0_svc+0x58/0x13c [ 86.215345][ T5430] el0_svc+0x78/0x1d0 [ 86.216053][ T5430] el0t_64_sync_handler+0xcc/0xe4 [ 86.216910][ T5430] el0t_64_sync+0x1a0/0x1a4 [ 86.217853][ T5430] ------------[ cut here ]------------ [ 86.219924][ T5430] WARNING: CPU: 1 PID: 5430 at fs/btrfs/inode.c:6776 btrfs_add_link+0x718/0xa9c [ 86.221309][ T5430] Modules linked in: [ 86.221977][ T5430] CPU: 1 PID: 5430 Comm: syz.0.39 Tainted: G W syzkaller #0 [ 86.223472][ T5430] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/26/2026 [ 86.225218][ T5430] pstate: 62400005 (nZCv daif +PAN -UAO +TCO -DIT -SSBS BTYPE=--) [ 86.226536][ T5430] pc : btrfs_add_link+0x718/0xa9c [ 86.227361][ T5430] lr : btrfs_add_link+0x718/0xa9c [ 86.228174][ T5430] sp : ffff8000219b79e0 [ 86.228802][ T5430] x29: ffff8000219b7ae0 x28: ffff0000dea4e9a0 x27: 0000000000000107 [ 86.230051][ T5430] x26: 00000000fffffff4 x25: 0000000000000001 x24: dfff800000000000 [ 86.231265][ T5430] x23: 0000000000000005 x22: 1fffe0001bd49d3f x21: ffff700004336f44 [ 86.232477][ T5430] x20: 00000000fffffff4 x19: ffff0000dea4e9f8 x18: 0000000000000001 [ 86.233728][ T5430] x17: 0000000000000000 x16: ffff80001125a830 x15: 00000000ffffffff [ 86.234952][ T5430] x14: 0000000000000001 x13: 1fffe000341f47ab x12: 0000000000ff0100 [ 86.236233][ T5430] x11: 0000000000000000 x10: 0000000000000000 x9 : 43210c2611d02100 [ 86.237497][ T5430] x8 : 43210c2611d02100 x7 : 0000000000000001 x6 : 0000000000000001 [ 86.238827][ T5430] x5 : ffff8000219b72f8 x4 : ffff80001437f3e0 x3 : ffff800008508edc [ 86.240102][ T5430] x2 : 0000000000000001 x1 : 0000000100000000 x0 : 0000000000000026 [ 86.241359][ T5430] Call trace: [ 86.241916][ T5430] btrfs_add_link+0x718/0xa9c [ 86.242673][ T5430] btrfs_link+0x3a4/0x694 [ 86.243388][ T5430] vfs_link+0x5b4/0x744 [ 86.244048][ T5430] do_linkat+0x258/0x750 [ 86.244715][ T5430] __arm64_sys_linkat+0xe4/0x100 [ 86.245518][ T5430] invoke_syscall+0x98/0x2b0 [ 86.246300][ T5430] el0_svc_common+0x138/0x258 [ 86.247081][ T5430] do_el0_svc+0x58/0x13c [ 86.247771][ T5430] el0_svc+0x78/0x1d0 [ 86.248474][ T5430] el0t_64_sync_handler+0xcc/0xe4 [ 86.249281][ T5430] el0t_64_sync+0x1a0/0x1a4 [ 86.250085][ T5430] irq event stamp: 80450 [ 86.250803][ T5430] hardirqs last enabled at (80449): [] __up_console_sem+0xb4/0xfc [ 86.252465][ T5430] hardirqs last disabled at (80450): [] el1_dbg+0x24/0x80 [ 86.253857][ T5430] softirqs last enabled at (80426): [] handle_softirqs+0xa40/0xbe4 [ 86.255421][ T5430] softirqs last disabled at (80413): [] __irq_exit_rcu+0x240/0x43c [ 86.257086][ T5430] ---[ end trace cf16be9f527b4bcd ]--- [ 86.261080][ T5430] BTRFS: error (device loop0) in btrfs_add_link:6776: errno=-12 Out of memory [ 86.400678][ T5452] loop0: detected capacity change from 0 to 32768 [ 86.488111][ T5452] BTRFS: device fsid ed167579-eb65-4e76-9a50-61ac97e9b59d devid 1 transid 8 /dev/loop0 scanned by syz.0.40 (5452) [ 86.506260][ T5452] FAULT_INJECTION: forcing a failure. [ 86.506260][ T5452] name failslab, interval 1, probability 0, space 0, times 0 [ 86.508336][ T5452] CPU: 0 PID: 5452 Comm: syz.0.40 Tainted: G W syzkaller #0 [ 86.509820][ T5452] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/26/2026 [ 86.511418][ T5452] Call trace: [ 86.511907][ T5452] dump_backtrace+0x0/0x458 [ 86.512645][ T5452] show_stack+0x2c/0x3c [ 86.513349][ T5452] __dump_stack+0x30/0x40 [ 86.514081][ T5452] dump_stack_lvl+0xf4/0x15c [ 86.514884][ T5452] dump_stack+0x1c/0x5c [ 86.515503][ T5452] should_fail+0x3bc/0x514 [ 86.516182][ T5452] __should_failslab+0xbc/0x10c [ 86.516977][ T5452] should_failslab+0x10/0x28 [ 86.517721][ T5452] slab_pre_alloc_hook+0x64/0xe8 [ 86.518472][ T5452] kmem_cache_alloc+0x94/0x3d4 [ 86.519322][ T5452] btrfs_alloc_path+0x5c/0x68 [ 86.520060][ T5452] btrfs_insert_inode_ref+0xf0/0xa2c [ 86.520924][ T5452] btrfs_add_link+0x248/0xa9c [ 86.521639][ T5452] btrfs_link+0x3a4/0x694 [ 86.522392][ T5452] vfs_link+0x5b4/0x744 [ 86.523145][ T5452] do_linkat+0x258/0x750 [ 86.523873][ T5452] __arm64_sys_linkat+0xe4/0x100 [ 86.524741][ T5452] invoke_syscall+0x98/0x2b0 [ 86.525573][ T5452] el0_svc_common+0x138/0x258 [ 86.526347][ T5452] do_el0_svc+0x58/0x13c [ 86.527075][ T5452] el0_svc+0x78/0x1d0 [ 86.527763][ T5452] el0t_64_sync_handler+0xcc/0xe4 [ 86.528663][ T5452] el0t_64_sync+0x1a0/0x1a4 [ 86.591123][ T4910] BTRFS: device fsid ed167579-eb65-4e76-9a50-61ac97e9b59d devid 1 transid 12 /dev/loop0 scanned by udevd (4910) [ 86.675090][ T5473] loop0: detected capacity change from 0 to 32768 [ 86.780042][ T5473] FAULT_INJECTION: forcing a failure. [ 86.780042][ T5473] name failslab, interval 1, probability 0, space 0, times 0 [ 86.782045][ T5473] CPU: 0 PID: 5473 Comm: syz.0.41 Tainted: G W syzkaller #0 [ 86.783496][ T5473] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/26/2026 [ 86.785136][ T5473] Call trace: [ 86.785679][ T5473] dump_backtrace+0x0/0x458 [ 86.786388][ T5473] show_stack+0x2c/0x3c [ 86.787044][ T5473] __dump_stack+0x30/0x40 [ 86.787786][ T5473] dump_stack_lvl+0xf4/0x15c [ 86.788572][ T5473] dump_stack+0x1c/0x5c [ 86.789297][ T5473] should_fail+0x3bc/0x514 [ 86.790026][ T5473] __should_failslab+0xbc/0x10c [ 86.790862][ T5473] should_failslab+0x10/0x28 [ 86.791619][ T5473] slab_pre_alloc_hook+0x64/0xe8 [ 86.792424][ T5473] kmem_cache_alloc+0x94/0x3d4 [ 86.793214][ T5473] btrfs_alloc_path+0x5c/0x68 [ 86.793954][ T5473] btrfs_insert_dir_item+0x184/0x3e8 [ 86.794844][ T5473] btrfs_add_link+0x2b0/0xa9c [ 86.795621][ T5473] btrfs_link+0x3a4/0x694 [ 86.796352][ T5473] vfs_link+0x5b4/0x744 [ 86.797053][ T5473] do_linkat+0x258/0x750 [ 86.797791][ T5473] __arm64_sys_linkat+0xe4/0x100 [ 86.798697][ T5473] invoke_syscall+0x98/0x2b0 [ 86.799468][ T5473] el0_svc_common+0x138/0x258 [ 86.800314][ T5473] do_el0_svc+0x58/0x13c [ 86.801020][ T5473] el0_svc+0x78/0x1d0 [ 86.801702][ T5473] el0t_64_sync_handler+0xcc/0xe4 [ 86.802525][ T5473] el0t_64_sync+0x1a0/0x1a4 [ 86.803550][ T5473] ------------[ cut here ]------------ [ 86.804555][ T5473] WARNING: CPU: 0 PID: 5473 at fs/btrfs/inode.c:6776 btrfs_add_link+0x718/0xa9c [ 86.806026][ T5473] Modules linked in: [ 86.806661][ T5473] CPU: 0 PID: 5473 Comm: syz.0.41 Tainted: G W syzkaller #0 [ 86.808017][ T5473] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/26/2026 [ 86.809630][ T5473] pstate: 62400005 (nZCv daif +PAN -UAO +TCO -DIT -SSBS BTYPE=--) [ 86.810774][ T5473] pc : btrfs_add_link+0x718/0xa9c [ 86.811529][ T5473] lr : btrfs_add_link+0x718/0xa9c [ 86.812307][ T5473] sp : ffff800021f179e0 [ 86.812993][ T5473] x29: ffff800021f17ae0 x28: ffff0000dea1b000 x27: 0000000000000107 [ 86.814347][ T5473] x26: 00000000fffffff4 x25: 0000000000000001 x24: dfff800000000000 [ 86.815742][ T5473] x23: 0000000000000005 x22: 1fffe0001bd4360b x21: ffff7000043e2f44 [ 86.817124][ T5473] x20: 00000000fffffff4 x19: ffff0000dea1b058 x18: 0000000000000001 [ 86.818476][ T5473] x17: 0000000000000000 x16: ffff8000083049fc x15: 00000000ffffffff [ 86.819755][ T5473] x14: 0000000000000001 x13: 1ffff000043e2e5c x12: 0000000000ff0100 [ 86.821100][ T5473] x11: 0000000000000000 x10: 0000000000000000 x9 : 786f28a352e5bd00 [ 86.822386][ T5473] x8 : 786f28a352e5bd00 x7 : 0000000000000001 x6 : 0000000000000001 [ 86.823694][ T5473] x5 : ffff800021f172f8 x4 : ffff80001437f3e0 x3 : ffff800008304b0c [ 86.824972][ T5473] x2 : 0000000000000001 x1 : 0000000100000000 x0 : 0000000000000026 [ 86.826243][ T5473] Call trace: [ 86.826790][ T5473] btrfs_add_link+0x718/0xa9c [ 86.827530][ T5473] btrfs_link+0x3a4/0x694 [ 86.828260][ T5473] vfs_link+0x5b4/0x744 [ 86.828912][ T5473] do_linkat+0x258/0x750 [ 86.829579][ T5473] __arm64_sys_linkat+0xe4/0x100 [ 86.830392][ T5473] invoke_syscall+0x98/0x2b0 [ 86.831196][ T5473] el0_svc_common+0x138/0x258 [ 86.831970][ T5473] do_el0_svc+0x58/0x13c [ 86.832662][ T5473] el0_svc+0x78/0x1d0 [ 86.833299][ T5473] el0t_64_sync_handler+0xcc/0xe4 [ 86.834111][ T5473] el0t_64_sync+0x1a0/0x1a4 [ 86.834868][ T5473] irq event stamp: 80692 [ 86.835547][ T5473] hardirqs last enabled at (80691): [] __up_console_sem+0xb4/0xfc [ 86.837136][ T5473] hardirqs last disabled at (80692): [] el1_dbg+0x24/0x80 [ 86.838569][ T5473] softirqs last enabled at (80672): [] handle_softirqs+0xa40/0xbe4 [ 86.840062][ T5473] softirqs last disabled at (80635): [] __irq_exit_rcu+0x240/0x43c [ 86.841582][ T5473] ---[ end trace cf16be9f527b4bce ]--- [ 86.843920][ T5473] BTRFS: error (device loop0) in btrfs_add_link:6776: errno=-12 Out of memory [ 86.990431][ T5496] loop0: detected capacity change from 0 to 32768 [ 86.999089][ T5496] BTRFS: device fsid ed167579-eb65-4e76-9a50-61ac97e9b59d devid 1 transid 8 /dev/loop0 scanned by syz.0.42 (5496) [ 87.018194][ T5496] FAULT_INJECTION: forcing a failure. [ 87.018194][ T5496] name failslab, interval 1, probability 0, space 0, times 0 [ 87.020568][ T5496] CPU: 1 PID: 5496 Comm: syz.0.42 Tainted: G W syzkaller #0 [ 87.021946][ T5496] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/26/2026 [ 87.023507][ T5496] Call trace: [ 87.024037][ T5496] dump_backtrace+0x0/0x458 [ 87.024760][ T5496] show_stack+0x2c/0x3c [ 87.025438][ T5496] __dump_stack+0x30/0x40 [ 87.026157][ T5496] dump_stack_lvl+0xf4/0x15c [ 87.026930][ T5496] dump_stack+0x1c/0x5c [ 87.027617][ T5496] should_fail+0x3bc/0x514 [ 87.028392][ T5496] __should_failslab+0xbc/0x10c [ 87.029149][ T5496] should_failslab+0x10/0x28 [ 87.029908][ T5496] slab_pre_alloc_hook+0x64/0xe8 [ 87.030784][ T5496] kmem_cache_alloc+0x94/0x3d4 [ 87.031553][ T5496] btrfs_alloc_path+0x5c/0x68 [ 87.032269][ T5496] btrfs_insert_inode_ref+0xf0/0xa2c [ 87.033106][ T5496] btrfs_add_link+0x248/0xa9c [ 87.033879][ T5496] btrfs_link+0x3a4/0x694 [ 87.034572][ T5496] vfs_link+0x5b4/0x744 [ 87.035276][ T5496] do_linkat+0x258/0x750 [ 87.035991][ T5496] __arm64_sys_linkat+0xe4/0x100 [ 87.036840][ T5496] invoke_syscall+0x98/0x2b0 [ 87.037609][ T5496] el0_svc_common+0x138/0x258 [ 87.038357][ T5496] do_el0_svc+0x58/0x13c [ 87.039040][ T5496] el0_svc+0x78/0x1d0 [ 87.039674][ T5496] el0t_64_sync_handler+0xcc/0xe4 [ 87.040478][ T5496] el0t_64_sync+0x1a0/0x1a4 [ 87.088904][ T4910] BTRFS: device fsid ed167579-eb65-4e76-9a50-61ac97e9b59d devid 1 transid 12 /dev/loop0 scanned by udevd (4910) [ 87.183246][ T5517] loop0: detected capacity change from 0 to 32768 [ 87.201627][ T5517] FAULT_INJECTION: forcing a failure. [ 87.201627][ T5517] name failslab, interval 1, probability 0, space 0, times 0 [ 87.203829][ T5517] CPU: 1 PID: 5517 Comm: syz.0.43 Tainted: G W syzkaller #0 [ 87.205104][ T5517] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/26/2026 [ 87.206690][ T5517] Call trace: [ 87.207205][ T5517] dump_backtrace+0x0/0x458 [ 87.207957][ T5517] show_stack+0x2c/0x3c [ 87.208669][ T5517] __dump_stack+0x30/0x40 [ 87.209377][ T5517] dump_stack_lvl+0xf4/0x15c [ 87.210138][ T5517] dump_stack+0x1c/0x5c [ 87.210840][ T5517] should_fail+0x3bc/0x514 [ 87.211584][ T5517] __should_failslab+0xbc/0x10c [ 87.212518][ T5517] should_failslab+0x10/0x28 [ 87.213291][ T5517] slab_pre_alloc_hook+0x64/0xe8 [ 87.214085][ T5517] kmem_cache_alloc+0x94/0x3d4 [ 87.214917][ T5517] btrfs_alloc_path+0x5c/0x68 [ 87.215720][ T5517] btrfs_insert_dir_item+0x184/0x3e8 [ 87.216558][ T5517] btrfs_add_link+0x2b0/0xa9c [ 87.217342][ T5517] btrfs_link+0x3a4/0x694 [ 87.218083][ T5517] vfs_link+0x5b4/0x744 [ 87.218802][ T5517] do_linkat+0x258/0x750 [ 87.219462][ T5517] __arm64_sys_linkat+0xe4/0x100 [ 87.220227][ T5517] invoke_syscall+0x98/0x2b0 [ 87.220918][ T5517] el0_svc_common+0x138/0x258 [ 87.221689][ T5517] do_el0_svc+0x58/0x13c [ 87.222410][ T5517] el0_svc+0x78/0x1d0 [ 87.223086][ T5517] el0t_64_sync_handler+0xcc/0xe4 [ 87.223958][ T5517] el0t_64_sync+0x1a0/0x1a4 [ 87.224925][ T5517] ------------[ cut here ]------------ [ 87.226022][ T5517] WARNING: CPU: 1 PID: 5517 at fs/btrfs/inode.c:6776 btrfs_add_link+0x718/0xa9c [ 87.227337][ T5517] Modules linked in: [ 87.227944][ T5517] CPU: 1 PID: 5517 Comm: syz.0.43 Tainted: G W syzkaller #0 [ 87.229221][ T5517] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/26/2026 [ 87.230653][ T5517] pstate: 62400005 (nZCv daif +PAN -UAO +TCO -DIT -SSBS BTYPE=--) [ 87.231794][ T5517] pc : btrfs_add_link+0x718/0xa9c [ 87.232574][ T5517] lr : btrfs_add_link+0x718/0xa9c [ 87.233420][ T5517] sp : ffff8000220479e0 [ 87.234104][ T5517] x29: ffff800022047ae0 x28: ffff0000dea1edc0 x27: 0000000000000107 [ 87.235464][ T5517] x26: 00000000fffffff4 x25: 0000000000000001 x24: dfff800000000000 [ 87.236923][ T5517] x23: 0000000000000005 x22: 1fffe0001bd43dc3 x21: ffff700004408f44 [ 87.238312][ T5517] x20: 00000000fffffff4 x19: ffff0000dea1ee18 x18: 0000000000000001 [ 87.239589][ T5517] x17: 0000000000000000 x16: ffff8000083049fc x15: 00000000ffffffff [ 87.240988][ T5517] x14: 0000000000000001 x13: 1ffff00004408e5c x12: 0000000000ff0100 [ 87.242273][ T5517] x11: 0000000000000000 x10: 0000000000000000 x9 : d1076c4caa9eda00 [ 87.243660][ T5517] x8 : d1076c4caa9eda00 x7 : 0000000000000001 x6 : 0000000000000001 [ 87.245036][ T5517] x5 : ffff8000220472f8 x4 : ffff80001437f3e0 x3 : ffff800008304b0c [ 87.246345][ T5517] x2 : 0000000000000001 x1 : 0000000100000000 x0 : 0000000000000026 [ 87.247559][ T5517] Call trace: [ 87.248046][ T5517] btrfs_add_link+0x718/0xa9c [ 87.248762][ T5517] btrfs_link+0x3a4/0x694 [ 87.249408][ T5517] vfs_link+0x5b4/0x744 [ 87.250104][ T5517] do_linkat+0x258/0x750 [ 87.250796][ T5517] __arm64_sys_linkat+0xe4/0x100 [ 87.251625][ T5517] invoke_syscall+0x98/0x2b0 [ 87.252403][ T5517] el0_svc_common+0x138/0x258 [ 87.253223][ T5517] do_el0_svc+0x58/0x13c [ 87.253925][ T5517] el0_svc+0x78/0x1d0 [ 87.254570][ T5517] el0t_64_sync_handler+0xcc/0xe4 [ 87.255434][ T5517] el0t_64_sync+0x1a0/0x1a4 [ 87.256165][ T5517] irq event stamp: 81690 [ 87.256843][ T5517] hardirqs last enabled at (81689): [] __up_console_sem+0xb4/0xfc [ 87.258424][ T5517] hardirqs last disabled at (81690): [] el1_dbg+0x24/0x80 [ 87.259976][ T5517] softirqs last enabled at (81666): [] handle_softirqs+0xa40/0xbe4 [ 87.261573][ T5517] softirqs last disabled at (81631): [] __irq_exit_rcu+0x240/0x43c [ 87.263113][ T5517] ---[ end trace cf16be9f527b4bcf ]--- [ 87.264549][ T5517] BTRFS: error (device loop0) in btrfs_add_link:6776: errno=-12 Out of memory [ 87.477879][ T5540] BTRFS: device fsid ed167579-eb65-4e76-9a50-61ac97e9b59d devid 1 transid 8 /dev/loop0 scanned by syz.0.44 (5540) [ 87.497497][ T5540] FAULT_INJECTION: forcing a failure. [ 87.497497][ T5540] name failslab, interval 1, probability 0, space 0, times 0 [ 87.499401][ T5540] CPU: 0 PID: 5540 Comm: syz.0.44 Tainted: G W syzkaller #0 [ 87.500870][ T5540] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/26/2026 [ 87.502442][ T5540] Call trace: [ 87.502957][ T5540] dump_backtrace+0x0/0x458 [ 87.503684][ T5540] show_stack+0x2c/0x3c [ 87.504371][ T5540] __dump_stack+0x30/0x40 [ 87.505104][ T5540] dump_stack_lvl+0xf4/0x15c [ 87.505886][ T5540] dump_stack+0x1c/0x5c [ 87.506566][ T5540] should_fail+0x3bc/0x514 [ 87.507308][ T5540] __should_failslab+0xbc/0x10c [ 87.508111][ T5540] should_failslab+0x10/0x28 [ 87.508883][ T5540] slab_pre_alloc_hook+0x64/0xe8 [ 87.509708][ T5540] kmem_cache_alloc+0x94/0x3d4 [ 87.510561][ T5540] btrfs_alloc_path+0x5c/0x68 [ 87.511268][ T5540] btrfs_insert_dir_item+0x184/0x3e8 [ 87.512120][ T5540] btrfs_add_link+0x2b0/0xa9c [ 87.512871][ T5540] btrfs_link+0x3a4/0x694 [ 87.513541][ T5540] vfs_link+0x5b4/0x744 [ 87.514168][ T5540] do_linkat+0x258/0x750 [ 87.514854][ T5540] __arm64_sys_linkat+0xe4/0x100 [ 87.515582][ T5540] invoke_syscall+0x98/0x2b0 [ 87.516369][ T5540] el0_svc_common+0x138/0x258 [ 87.517073][ T5540] do_el0_svc+0x58/0x13c [ 87.517762][ T5540] el0_svc+0x78/0x1d0 [ 87.518403][ T5540] el0t_64_sync_handler+0xcc/0xe4 [ 87.519135][ T5540] el0t_64_sync+0x1a0/0x1a4 [ 87.522119][ T5540] ------------[ cut here ]------------ [ 87.523494][ T5540] WARNING: CPU: 0 PID: 5540 at fs/btrfs/inode.c:6776 btrfs_add_link+0x718/0xa9c [ 87.524849][ T5540] Modules linked in: [ 87.525525][ T5540] CPU: 0 PID: 5540 Comm: syz.0.44 Tainted: G W syzkaller #0 [ 87.526843][ T5540] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/26/2026 [ 87.528505][ T5540] pstate: 62400005 (nZCv daif +PAN -UAO +TCO -DIT -SSBS BTYPE=--) [ 87.529746][ T5540] pc : btrfs_add_link+0x718/0xa9c [ 87.530511][ T5540] lr : btrfs_add_link+0x718/0xa9c [ 87.531363][ T5540] sp : ffff8000222479e0 [ 87.532058][ T5540] x29: ffff800022247ae0 x28: ffff0000dea1bd10 x27: 0000000000000107 [ 87.533430][ T5540] x26: 00000000fffffff4 x25: 0000000000000001 x24: dfff800000000000 [ 87.534732][ T5540] x23: 0000000000000005 x22: 1fffe0001bd437ad x21: ffff700004448f44 [ 87.536070][ T5540] x20: 00000000fffffff4 x19: ffff0000dea1bd68 x18: 0000000000000001 [ 87.537397][ T5540] x17: 0000000000000000 x16: ffff80001125a830 x15: 00000000ffffffff [ 87.538740][ T5540] x14: 0000000000000001 x13: 1fffe000341f05ab x12: 0000000000ff0100 [ 87.540120][ T5540] x11: 0000000000000000 x10: 0000000000000000 x9 : fe02885484c35a00 [ 87.541518][ T5540] x8 : fe02885484c35a00 x7 : 0000000000000001 x6 : 0000000000000001 [ 87.542906][ T5540] x5 : ffff8000222472f8 x4 : ffff80001437f3e0 x3 : ffff800008508edc [ 87.544222][ T5540] x2 : 0000000000000001 x1 : 0000000100000000 x0 : 0000000000000026 [ 87.545484][ T5540] Call trace: [ 87.545994][ T5540] btrfs_add_link+0x718/0xa9c [ 87.546832][ T5540] btrfs_link+0x3a4/0x694 [ 87.547568][ T5540] vfs_link+0x5b4/0x744 [ 87.548260][ T5540] do_linkat+0x258/0x750 [ 87.548970][ T5540] __arm64_sys_linkat+0xe4/0x100 [ 87.549771][ T5540] invoke_syscall+0x98/0x2b0 [ 87.550557][ T5540] el0_svc_common+0x138/0x258 [ 87.551384][ T5540] do_el0_svc+0x58/0x13c [ 87.552112][ T5540] el0_svc+0x78/0x1d0 [ 87.552806][ T5540] el0t_64_sync_handler+0xcc/0xe4 [ 87.553611][ T5540] el0t_64_sync+0x1a0/0x1a4 [ 87.554436][ T5540] irq event stamp: 82428 [ 87.555201][ T5540] hardirqs last enabled at (82427): [] __up_console_sem+0xb4/0xfc [ 87.556625][ T5540] hardirqs last disabled at (82428): [] el1_dbg+0x24/0x80 [ 87.557950][ T5540] softirqs last enabled at (82418): [] handle_softirqs+0xa40/0xbe4 [ 87.559510][ T5540] softirqs last disabled at (82093): [] __irq_exit_rcu+0x240/0x43c [ 87.560965][ T5540] ---[ end trace cf16be9f527b4bd0 ]--- [ 87.564219][ T5540] BTRFS: error (device loop0) in btrfs_add_link:6776: errno=-12 Out of memory [ 87.776091][ T5562] BTRFS: device fsid ed167579-eb65-4e76-9a50-61ac97e9b59d devid 1 transid 8 /dev/loop0 scanned by syz.0.45 (5562) [ 87.849004][ T5562] FAULT_INJECTION: forcing a failure. [ 87.849004][ T5562] name failslab, interval 1, probability 0, space 0, times 0 [ 87.851147][ T5562] CPU: 1 PID: 5562 Comm: syz.0.45 Tainted: G W syzkaller #0 [ 87.852447][ T5562] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/26/2026 [ 87.854134][ T5562] Call trace: [ 87.854639][ T5562] dump_backtrace+0x0/0x458 [ 87.855402][ T5562] show_stack+0x2c/0x3c [ 87.856083][ T5562] __dump_stack+0x30/0x40 [ 87.856833][ T5562] dump_stack_lvl+0xf4/0x15c [ 87.857544][ T5562] dump_stack+0x1c/0x5c [ 87.858223][ T5562] should_fail+0x3bc/0x514 [ 87.858989][ T5562] __should_failslab+0xbc/0x10c [ 87.859849][ T5562] should_failslab+0x10/0x28 [ 87.860557][ T5562] slab_pre_alloc_hook+0x64/0xe8 [ 87.861310][ T5562] kmem_cache_alloc+0x94/0x3d4 [ 87.862135][ T5562] btrfs_alloc_path+0x5c/0x68 [ 87.862929][ T5562] btrfs_insert_dir_item+0x184/0x3e8 [ 87.863801][ T5562] btrfs_add_link+0x2b0/0xa9c [ 87.864601][ T5562] btrfs_link+0x3a4/0x694 [ 87.865337][ T5562] vfs_link+0x5b4/0x744 [ 87.866053][ T5562] do_linkat+0x258/0x750 [ 87.866791][ T5562] __arm64_sys_linkat+0xe4/0x100 [ 87.867569][ T5562] invoke_syscall+0x98/0x2b0 [ 87.868281][ T5562] el0_svc_common+0x138/0x258 [ 87.869076][ T5562] do_el0_svc+0x58/0x13c [ 87.869760][ T5562] el0_svc+0x78/0x1d0 [ 87.870414][ T5562] el0t_64_sync_handler+0xcc/0xe4 [ 87.871281][ T5562] el0t_64_sync+0x1a0/0x1a4 [ 87.874993][ T5562] ------------[ cut here ]------------ [ 87.876054][ T5562] WARNING: CPU: 1 PID: 5562 at fs/btrfs/inode.c:6776 btrfs_add_link+0x718/0xa9c [ 87.877421][ T5562] Modules linked in: [ 87.878093][ T5562] CPU: 1 PID: 5562 Comm: syz.0.45 Tainted: G W syzkaller #0 [ 87.879400][ T5562] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/26/2026 [ 87.880985][ T5562] pstate: 62400005 (nZCv daif +PAN -UAO +TCO -DIT -SSBS BTYPE=--) [ 87.882313][ T5562] pc : btrfs_add_link+0x718/0xa9c [ 87.883148][ T5562] lr : btrfs_add_link+0x718/0xa9c [ 87.883995][ T5562] sp : ffff8000219b79e0 [ 87.884670][ T5562] x29: ffff8000219b7ae0 x28: ffff0000dea1ebb0 x27: 0000000000000107 [ 87.885902][ T5562] x26: 00000000fffffff4 x25: 0000000000000001 x24: dfff800000000000 [ 87.887161][ T5562] x23: 0000000000000005 x22: 1fffe0001bd43d81 x21: ffff700004336f44 [ 87.888397][ T5562] x20: 00000000fffffff4 x19: ffff0000dea1ec08 x18: 0000000000000001 [ 87.889593][ T5562] x17: 0000000000000000 x16: ffff80001125a830 x15: 00000000ffffffff [ 87.890939][ T5562] x14: 0000000000000001 x13: 1fffe000341f47ab x12: 0000000000ff0100 [ 87.892216][ T5562] x11: 0000000000000000 x10: 0000000000000000 x9 : 13584e0f7d7d5300 [ 87.893474][ T5562] x8 : 13584e0f7d7d5300 x7 : 0000000000000001 x6 : 0000000000000001 [ 87.894806][ T5562] x5 : ffff8000219b72f8 x4 : ffff80001437f3e0 x3 : ffff800008508edc [ 87.896148][ T5562] x2 : 0000000000000001 x1 : 0000000100000000 x0 : 0000000000000026 [ 87.897457][ T5562] Call trace: [ 87.897981][ T5562] btrfs_add_link+0x718/0xa9c [ 87.898763][ T5562] btrfs_link+0x3a4/0x694 [ 87.899512][ T5562] vfs_link+0x5b4/0x744 [ 87.900200][ T5562] do_linkat+0x258/0x750 [ 87.900905][ T5562] __arm64_sys_linkat+0xe4/0x100 [ 87.901693][ T5562] invoke_syscall+0x98/0x2b0 [ 87.902487][ T5562] el0_svc_common+0x138/0x258 [ 87.903209][ T5562] do_el0_svc+0x58/0x13c [ 87.903950][ T5562] el0_svc+0x78/0x1d0 [ 87.904641][ T5562] el0t_64_sync_handler+0xcc/0xe4 [ 87.905490][ T5562] el0t_64_sync+0x1a0/0x1a4 [ 87.906251][ T5562] irq event stamp: 82054 [ 87.906955][ T5562] hardirqs last enabled at (82053): [] __up_console_sem+0xb4/0xfc [ 87.908621][ T5562] hardirqs last disabled at (82054): [] el1_dbg+0x24/0x80 [ 87.910104][ T5562] softirqs last enabled at (82030): [] handle_softirqs+0xa40/0xbe4 [ 87.911664][ T5562] softirqs last disabled at (81783): [] __irq_exit_rcu+0x240/0x43c [ 87.913146][ T5562] ---[ end trace cf16be9f527b4bd1 ]--- [ 87.917037][ T5562] BTRFS: error (device loop0) in btrfs_add_link:6776: errno=-12 Out of memory [ 88.175729][ T5584] BTRFS: device fsid ed167579-eb65-4e76-9a50-61ac97e9b59d devid 1 transid 8 /dev/loop0 scanned by syz.0.46 (5584) [ 88.203624][ T5584] FAULT_INJECTION: forcing a failure. [ 88.203624][ T5584] name failslab, interval 1, probability 0, space 0, times 0 [ 88.205710][ T5584] CPU: 0 PID: 5584 Comm: syz.0.46 Tainted: G W syzkaller #0 [ 88.207203][ T5584] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/26/2026 [ 88.208921][ T5584] Call trace: [ 88.209432][ T5584] dump_backtrace+0x0/0x458 [ 88.210118][ T5584] show_stack+0x2c/0x3c [ 88.210780][ T5584] __dump_stack+0x30/0x40 [ 88.211504][ T5584] dump_stack_lvl+0xf4/0x15c [ 88.212304][ T5584] dump_stack+0x1c/0x5c [ 88.213014][ T5584] should_fail+0x3bc/0x514 [ 88.213708][ T5584] __should_failslab+0xbc/0x10c [ 88.214496][ T5584] should_failslab+0x10/0x28 [ 88.215386][ T5584] slab_pre_alloc_hook+0x64/0xe8 [ 88.216218][ T5584] kmem_cache_alloc+0x94/0x3d4 [ 88.217002][ T5584] start_transaction+0x4d0/0x13ec [ 88.217773][ T5584] btrfs_start_transaction+0x34/0x44 [ 88.218598][ T5584] btrfs_link+0x1f0/0x694 [ 88.219279][ T5584] vfs_link+0x5b4/0x744 [ 88.220001][ T5584] do_linkat+0x258/0x750 [ 88.220723][ T5584] __arm64_sys_linkat+0xe4/0x100 [ 88.221522][ T5584] invoke_syscall+0x98/0x2b0 [ 88.222287][ T5584] el0_svc_common+0x138/0x258 [ 88.223063][ T5584] do_el0_svc+0x58/0x13c [ 88.223731][ T5584] el0_svc+0x78/0x1d0 [ 88.224393][ T5584] el0t_64_sync_handler+0xcc/0xe4 [ 88.225221][ T5584] el0t_64_sync+0x1a0/0x1a4 [ 88.393537][ T5606] BTRFS: device fsid ed167579-eb65-4e76-9a50-61ac97e9b59d devid 1 transid 8 /dev/loop0 scanned by syz.0.47 (5606) [ 88.423954][ T5606] FAULT_INJECTION: forcing a failure. [ 88.423954][ T5606] name failslab, interval 1, probability 0, space 0, times 0 [ 88.426227][ T5606] CPU: 1 PID: 5606 Comm: syz.0.47 Tainted: G W syzkaller #0 [ 88.427735][ T5606] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/26/2026 [ 88.429367][ T5606] Call trace: [ 88.429888][ T5606] dump_backtrace+0x0/0x458 [ 88.430640][ T5606] show_stack+0x2c/0x3c [ 88.431376][ T5606] __dump_stack+0x30/0x40 [ 88.432080][ T5606] dump_stack_lvl+0xf4/0x15c [ 88.432765][ T5606] dump_stack+0x1c/0x5c [ 88.433453][ T5606] should_fail+0x3bc/0x514 [ 88.434226][ T5606] __should_failslab+0xbc/0x10c [ 88.435038][ T5606] should_failslab+0x10/0x28 [ 88.435768][ T5606] slab_pre_alloc_hook+0x64/0xe8 [ 88.436541][ T5606] kmem_cache_alloc+0x94/0x3d4 [ 88.437394][ T5606] btrfs_alloc_path+0x5c/0x68 [ 88.438132][ T5606] btrfs_insert_inode_ref+0xf0/0xa2c [ 88.439046][ T5606] btrfs_add_link+0x248/0xa9c [ 88.439814][ T5606] btrfs_link+0x3a4/0x694 [ 88.440474][ T5606] vfs_link+0x5b4/0x744 [ 88.441153][ T5606] do_linkat+0x258/0x750 [ 88.441798][ T5606] __arm64_sys_linkat+0xe4/0x100 [ 88.442611][ T5606] invoke_syscall+0x98/0x2b0 [ 88.443317][ T5606] el0_svc_common+0x138/0x258 [ 88.444020][ T5606] do_el0_svc+0x58/0x13c [ 88.444656][ T5606] el0_svc+0x78/0x1d0 [ 88.445227][ T5606] el0t_64_sync_handler+0xcc/0xe4 [ 88.445989][ T5606] el0t_64_sync+0x1a0/0x1a4 [ 88.626322][ T5628] BTRFS: device fsid ed167579-eb65-4e76-9a50-61ac97e9b59d devid 1 transid 8 /dev/loop0 scanned by syz.0.48 (5628) [ 88.642654][ T5628] FAULT_INJECTION: forcing a failure. [ 88.642654][ T5628] name failslab, interval 1, probability 0, space 0, times 0 [ 88.645303][ T5628] CPU: 1 PID: 5628 Comm: syz.0.48 Tainted: G W syzkaller #0 [ 88.646542][ T5628] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/26/2026 [ 88.648118][ T5628] Call trace: [ 88.648628][ T5628] dump_backtrace+0x0/0x458 [ 88.649283][ T5628] show_stack+0x2c/0x3c [ 88.649872][ T5628] __dump_stack+0x30/0x40 [ 88.650512][ T5628] dump_stack_lvl+0xf4/0x15c [ 88.651181][ T5628] dump_stack+0x1c/0x5c [ 88.651952][ T5628] should_fail+0x3bc/0x514 [ 88.652716][ T5628] __should_failslab+0xbc/0x10c [ 88.653478][ T5628] should_failslab+0x10/0x28 [ 88.654215][ T5628] slab_pre_alloc_hook+0x64/0xe8 [ 88.655089][ T5628] kmem_cache_alloc+0x94/0x3d4 [ 88.655931][ T5628] btrfs_alloc_path+0x5c/0x68 [ 88.656741][ T5628] btrfs_insert_inode_ref+0xf0/0xa2c [ 88.657655][ T5628] btrfs_add_link+0x248/0xa9c [ 88.658401][ T5628] btrfs_link+0x3a4/0x694 [ 88.659107][ T5628] vfs_link+0x5b4/0x744 [ 88.659773][ T5628] do_linkat+0x258/0x750 [ 88.660439][ T5628] __arm64_sys_linkat+0xe4/0x100 [ 88.661221][ T5628] invoke_syscall+0x98/0x2b0 [ 88.661945][ T5628] el0_svc_common+0x138/0x258 [ 88.662691][ T5628] do_el0_svc+0x58/0x13c [ 88.663359][ T5628] el0_svc+0x78/0x1d0 [ 88.663990][ T5628] el0t_64_sync_handler+0xcc/0xe4 [ 88.664810][ T5628] el0t_64_sync+0x1a0/0x1a4 [ 88.738192][ T4910] BTRFS: device fsid ed167579-eb65-4e76-9a50-61ac97e9b59d devid 1 transid 12 /dev/loop0 scanned by udevd (4910) [ 88.909352][ T5649] FAULT_INJECTION: forcing a failure. [ 88.909352][ T5649] name failslab, interval 1, probability 0, space 0, times 0 [ 88.911320][ T5649] CPU: 0 PID: 5649 Comm: syz.0.49 Tainted: G W syzkaller #0 [ 88.912698][ T5649] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/26/2026 [ 88.914385][ T5649] Call trace: [ 88.914909][ T5649] dump_backtrace+0x0/0x458 [ 88.915645][ T5649] show_stack+0x2c/0x3c [ 88.916332][ T5649] __dump_stack+0x30/0x40 [ 88.917033][ T5649] dump_stack_lvl+0xf4/0x15c [ 88.917835][ T5649] dump_stack+0x1c/0x5c [ 88.918515][ T5649] should_fail+0x3bc/0x514 [ 88.919214][ T5649] __should_failslab+0xbc/0x10c [ 88.919997][ T5649] should_failslab+0x10/0x28 [ 88.920787][ T5649] slab_pre_alloc_hook+0x64/0xe8 [ 88.921626][ T5649] kmem_cache_alloc+0x94/0x3d4 [ 88.922432][ T5649] start_transaction+0x4d0/0x13ec [ 88.923229][ T5649] btrfs_start_transaction+0x34/0x44 [ 88.924071][ T5649] btrfs_link+0x1f0/0x694 [ 88.924767][ T5649] vfs_link+0x5b4/0x744 [ 88.925419][ T5649] do_linkat+0x258/0x750 [ 88.926074][ T5649] __arm64_sys_linkat+0xe4/0x100 [ 88.926848][ T5649] invoke_syscall+0x98/0x2b0 [ 88.927534][ T5649] el0_svc_common+0x138/0x258 [ 88.928307][ T5649] do_el0_svc+0x58/0x13c [ 88.929008][ T5649] el0_svc+0x78/0x1d0 [ 88.929696][ T5649] el0t_64_sync_handler+0xcc/0xe4 [ 88.930464][ T5649] el0t_64_sync+0x1a0/0x1a4 [ 89.135632][ T5671] BTRFS: device fsid ed167579-eb65-4e76-9a50-61ac97e9b59d devid 1 transid 8 /dev/loop0 scanned by syz.0.50 (5671) [ 89.140481][ T5671] btrfs_printk: 204 callbacks suppressed [ 89.140493][ T5671] BTRFS info (device loop0): using sha256 (sha256-ce) checksum algorithm [ 89.143272][ T5671] BTRFS info (device loop0): metadata ratio 1025 [ 89.144282][ T5671] BTRFS info (device loop0): doing ref verification [ 89.145440][ T5671] BTRFS info (device loop0): force clearing of disk cache [ 89.146591][ T5671] BTRFS info (device loop0): turning off barriers [ 89.147605][ T5671] BTRFS info (device loop0): setting nodatacow, compression disabled [ 89.148994][ T5671] BTRFS info (device loop0): enabling ssd optimizations [ 89.150094][ T5671] BTRFS info (device loop0): using spread ssd allocation scheme [ 89.151349][ T5671] BTRFS info (device loop0): not using ssd optimizations [ 89.152598][ T5671] BTRFS info (device loop0): not using spread ssd allocation scheme [ 89.154521][ T5671] BTRFS info (device loop0): using free space tree [ 89.155539][ T5671] BTRFS info (device loop0): has skinny extents [ 89.170023][ T5671] BTRFS info (device loop0): clearing free space tree [ 89.171227][ T5671] BTRFS info (device loop0): clearing compat-ro feature flag for FREE_SPACE_TREE (0x1) [ 89.173042][ T5671] BTRFS info (device loop0): clearing compat-ro feature flag for FREE_SPACE_TREE_VALID (0x2) [ 89.176730][ T5671] BTRFS info (device loop0): creating free space tree [ 89.178157][ T5671] BTRFS info (device loop0): setting compat-ro feature flag for FREE_SPACE_TREE (0x1) [ 89.179775][ T5671] BTRFS info (device loop0): setting compat-ro feature flag for FREE_SPACE_TREE_VALID (0x2) [ 89.185528][ T5671] FAULT_INJECTION: forcing a failure. [ 89.185528][ T5671] name failslab, interval 1, probability 0, space 0, times 0 [ 89.187534][ T5671] CPU: 1 PID: 5671 Comm: syz.0.50 Tainted: G W syzkaller #0 [ 89.188843][ T5671] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/26/2026 [ 89.190480][ T5671] Call trace: [ 89.190988][ T5671] dump_backtrace+0x0/0x458 [ 89.191705][ T5671] show_stack+0x2c/0x3c [ 89.192369][ T5671] __dump_stack+0x30/0x40 [ 89.193085][ T5671] dump_stack_lvl+0xf4/0x15c [ 89.193854][ T5671] dump_stack+0x1c/0x5c [ 89.194556][ T5671] should_fail+0x3bc/0x514 [ 89.195361][ T5671] __should_failslab+0xbc/0x10c [ 89.196193][ T5671] should_failslab+0x10/0x28 [ 89.196931][ T5671] slab_pre_alloc_hook+0x64/0xe8 [ 89.197750][ T5671] kmem_cache_alloc+0x94/0x3d4 [ 89.198539][ T5671] btrfs_alloc_path+0x5c/0x68 [ 89.199301][ T5671] btrfs_insert_dir_item+0x184/0x3e8 [ 89.200225][ T5671] btrfs_add_link+0x2b0/0xa9c [ 89.201014][ T5671] btrfs_link+0x3a4/0x694 [ 89.201782][ T5671] vfs_link+0x5b4/0x744 [ 89.202461][ T5671] do_linkat+0x258/0x750 [ 89.203164][ T5671] __arm64_sys_linkat+0xe4/0x100 [ 89.203953][ T5671] invoke_syscall+0x98/0x2b0 [ 89.204699][ T5671] el0_svc_common+0x138/0x258 [ 89.205441][ T5671] do_el0_svc+0x58/0x13c [ 89.206213][ T5671] el0_svc+0x78/0x1d0 [ 89.206839][ T5671] el0t_64_sync_handler+0xcc/0xe4 [ 89.207628][ T5671] el0t_64_sync+0x1a0/0x1a4 [ 89.209229][ T5671] ------------[ cut here ]------------ [ 89.210286][ T5671] WARNING: CPU: 1 PID: 5671 at fs/btrfs/inode.c:6776 btrfs_add_link+0x718/0xa9c [ 89.211571][ T5671] Modules linked in: [ 89.212145][ T5671] CPU: 1 PID: 5671 Comm: syz.0.50 Tainted: G W syzkaller #0 [ 89.213547][ T5671] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/26/2026 [ 89.215199][ T5671] pstate: 62400005 (nZCv daif +PAN -UAO +TCO -DIT -SSBS BTYPE=--) [ 89.216474][ T5671] pc : btrfs_add_link+0x718/0xa9c [ 89.217298][ T5671] lr : btrfs_add_link+0x718/0xa9c [ 89.218067][ T5671] sp : ffff8000221879e0 [ 89.218692][ T5671] x29: ffff800022187ae0 x28: ffff0000dea1e000 x27: 0000000000000107 [ 89.220023][ T5671] x26: 00000000fffffff4 x25: 0000000000000001 x24: dfff800000000000 [ 89.221384][ T5671] x23: 0000000000000005 x22: 1fffe0001bd43c0b x21: ffff700004430f44 [ 89.222669][ T5671] x20: 00000000fffffff4 x19: ffff0000dea1e058 x18: 0000000000000001 [ 89.223947][ T5671] x17: 0000000000000000 x16: ffff8000083049fc x15: 00000000ffffffff [ 89.225271][ T5671] x14: 0000000000000001 x13: 1ffff00004430e5c x12: 0000000000ff0100 [ 89.226549][ T5671] x11: 0000000000000000 x10: 0000000000000000 x9 : ee7308d129fb0200 [ 89.227810][ T5671] x8 : ee7308d129fb0200 x7 : 0000000000000001 x6 : 0000000000000001 [ 89.229026][ T5671] x5 : ffff8000221872f8 x4 : ffff80001437f3e0 x3 : ffff800008304b0c [ 89.230303][ T5671] x2 : 0000000000000001 x1 : 0000000100000000 x0 : 0000000000000026 [ 89.231532][ T5671] Call trace: [ 89.232012][ T5671] btrfs_add_link+0x718/0xa9c [ 89.232802][ T5671] btrfs_link+0x3a4/0x694 [ 89.233553][ T5671] vfs_link+0x5b4/0x744 [ 89.234228][ T5671] do_linkat+0x258/0x750 [ 89.234881][ T5671] __arm64_sys_linkat+0xe4/0x100 [ 89.235798][ T5671] invoke_syscall+0x98/0x2b0 [ 89.236598][ T5671] el0_svc_common+0x138/0x258 [ 89.237422][ T5671] do_el0_svc+0x58/0x13c [ 89.238130][ T5671] el0_svc+0x78/0x1d0 [ 89.238799][ T5671] el0t_64_sync_handler+0xcc/0xe4 [ 89.239626][ T5671] el0t_64_sync+0x1a0/0x1a4 [ 89.240389][ T5671] irq event stamp: 81778 [ 89.241083][ T5671] hardirqs last enabled at (81777): [] __up_console_sem+0xb4/0xfc [ 89.242717][ T5671] hardirqs last disabled at (81778): [] el1_dbg+0x24/0x80 [ 89.244268][ T5671] softirqs last enabled at (81758): [] handle_softirqs+0xa40/0xbe4 [ 89.246000][ T5671] softirqs last disabled at (81657): [] __irq_exit_rcu+0x240/0x43c [ 89.247609][ T5671] ---[ end trace cf16be9f527b4bd2 ]--- [ 89.248821][ T5671] BTRFS: error (device loop0) in btrfs_add_link:6776: errno=-12 Out of memory [ 89.250269][ T5671] BTRFS info (device loop0): forced readonly 1970/01/01 00:01:29 executed programs: 37 [ 89.439402][ T5693] set_capacity_and_notify: 7 callbacks suppressed [ 89.439411][ T5693] loop0: detected capacity change from 0 to 32768 [ 89.474362][ T5693] BTRFS: device fsid ed167579-eb65-4e76-9a50-61ac97e9b59d devid 1 transid 8 /dev/loop0 scanned by syz.0.51 (5693) [ 89.477167][ T5693] BTRFS info (device loop0): using sha256 (sha256-ce) checksum algorithm [ 89.478566][ T5693] BTRFS info (device loop0): metadata ratio 1025 [ 89.479737][ T5693] BTRFS info (device loop0): doing ref verification [ 89.480814][ T5693] BTRFS info (device loop0): force clearing of disk cache [ 89.481910][ T5693] BTRFS info (device loop0): turning off barriers [ 89.483029][ T5693] BTRFS info (device loop0): setting nodatacow, compression disabled [ 89.484233][ T5693] BTRFS info (device loop0): enabling ssd optimizations [ 89.485269][ T5693] BTRFS info (device loop0): using spread ssd allocation scheme [ 89.486488][ T5693] BTRFS info (device loop0): not using ssd optimizations [ 89.487635][ T5693] BTRFS info (device loop0): not using spread ssd allocation scheme [ 89.488923][ T5693] BTRFS info (device loop0): using free space tree [ 89.489979][ T5693] BTRFS info (device loop0): has skinny extents [ 89.501435][ T5693] BTRFS info (device loop0): clearing free space tree [ 89.502646][ T5693] BTRFS info (device loop0): clearing compat-ro feature flag for FREE_SPACE_TREE (0x1) [ 89.504487][ T5693] BTRFS info (device loop0): clearing compat-ro feature flag for FREE_SPACE_TREE_VALID (0x2) [ 89.508133][ T5693] BTRFS info (device loop0): creating free space tree [ 89.509595][ T5693] BTRFS info (device loop0): setting compat-ro feature flag for FREE_SPACE_TREE (0x1) [ 89.511543][ T5693] BTRFS info (device loop0): setting compat-ro feature flag for FREE_SPACE_TREE_VALID (0x2) [ 89.517475][ T5693] FAULT_INJECTION: forcing a failure. [ 89.517475][ T5693] name failslab, interval 1, probability 0, space 0, times 0 [ 89.519558][ T5693] CPU: 1 PID: 5693 Comm: syz.0.51 Tainted: G W syzkaller #0 [ 89.520987][ T5693] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/26/2026 [ 89.522605][ T5693] Call trace: [ 89.523145][ T5693] dump_backtrace+0x0/0x458 [ 89.523919][ T5693] show_stack+0x2c/0x3c [ 89.524629][ T5693] __dump_stack+0x30/0x40 [ 89.525410][ T5693] dump_stack_lvl+0xf4/0x15c [ 89.526250][ T5693] dump_stack+0x1c/0x5c [ 89.526927][ T5693] should_fail+0x3bc/0x514 [ 89.527695][ T5693] __should_failslab+0xbc/0x10c [ 89.528492][ T5693] should_failslab+0x10/0x28 [ 89.529240][ T5693] slab_pre_alloc_hook+0x64/0xe8 [ 89.530050][ T5693] kmem_cache_alloc+0x94/0x3d4 [ 89.530833][ T5693] btrfs_alloc_path+0x5c/0x68 [ 89.531658][ T5693] btrfs_insert_dir_item+0x184/0x3e8 [ 89.532546][ T5693] btrfs_add_link+0x2b0/0xa9c [ 89.533328][ T5693] btrfs_link+0x3a4/0x694 [ 89.534021][ T5693] vfs_link+0x5b4/0x744 [ 89.534670][ T5693] do_linkat+0x258/0x750 [ 89.535329][ T5693] __arm64_sys_linkat+0xe4/0x100 [ 89.536159][ T5693] invoke_syscall+0x98/0x2b0 [ 89.536946][ T5693] el0_svc_common+0x138/0x258 [ 89.537707][ T5693] do_el0_svc+0x58/0x13c [ 89.538381][ T5693] el0_svc+0x78/0x1d0 [ 89.539069][ T5693] el0t_64_sync_handler+0xcc/0xe4 [ 89.539947][ T5693] el0t_64_sync+0x1a0/0x1a4 [ 89.543020][ T5693] ------------[ cut here ]------------ [ 89.544064][ T5693] WARNING: CPU: 0 PID: 5693 at fs/btrfs/inode.c:6776 btrfs_add_link+0x718/0xa9c [ 89.545521][ T5693] Modules linked in: [ 89.546170][ T5693] CPU: 0 PID: 5693 Comm: syz.0.51 Tainted: G W syzkaller #0 [ 89.547482][ T5693] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/26/2026 [ 89.549068][ T5693] pstate: 62400005 (nZCv daif +PAN -UAO +TCO -DIT -SSBS BTYPE=--) [ 89.550348][ T5693] pc : btrfs_add_link+0x718/0xa9c [ 89.551129][ T5693] lr : btrfs_add_link+0x718/0xa9c [ 89.551910][ T5693] sp : ffff8000225b79e0 [ 89.552543][ T5693] x29: ffff8000225b7ae0 x28: ffff0000deabc210 x27: 0000000000000107 [ 89.553820][ T5693] x26: 00000000fffffff4 x25: 0000000000000001 x24: dfff800000000000 [ 89.555114][ T5693] x23: 0000000000000005 x22: 1fffe0001bd5784d x21: ffff7000044b6f44 [ 89.556426][ T5693] x20: 00000000fffffff4 x19: ffff0000deabc268 x18: 0000000000000001 [ 89.557813][ T5693] x17: 0000000000000000 x16: ffff80001125a830 x15: 00000000ffffffff [ 89.559093][ T5693] x14: 0000000000000001 x13: 1fffe000341f05ab x12: 0000000000ff0100 [ 89.560442][ T5693] x11: 0000000000000000 x10: 0000000000000000 x9 : e25eab89ef2cef00 [ 89.561811][ T5693] x8 : e25eab89ef2cef00 x7 : 0000000000000001 x6 : 0000000000000001 [ 89.563152][ T5693] x5 : ffff8000225b72f8 x4 : ffff80001437f3e0 x3 : ffff800008508edc [ 89.564468][ T5693] x2 : 0000000000000001 x1 : 0000000100000000 x0 : 0000000000000026 [ 89.565795][ T5693] Call trace: [ 89.566283][ T5693] btrfs_add_link+0x718/0xa9c [ 89.567040][ T5693] btrfs_link+0x3a4/0x694 [ 89.567729][ T5693] vfs_link+0x5b4/0x744 [ 89.568413][ T5693] do_linkat+0x258/0x750 [ 89.569111][ T5693] __arm64_sys_linkat+0xe4/0x100 [ 89.569954][ T5693] invoke_syscall+0x98/0x2b0 [ 89.570760][ T5693] el0_svc_common+0x138/0x258 [ 89.571550][ T5693] do_el0_svc+0x58/0x13c [ 89.572188][ T5693] el0_svc+0x78/0x1d0 [ 89.572821][ T5693] el0t_64_sync_handler+0xcc/0xe4 [ 89.573556][ T5693] el0t_64_sync+0x1a0/0x1a4 [ 89.574243][ T5693] irq event stamp: 81016 [ 89.574883][ T5693] hardirqs last enabled at (81015): [] __up_console_sem+0xb4/0xfc [ 89.576502][ T5693] hardirqs last disabled at (81016): [] el1_dbg+0x24/0x80 [ 89.577907][ T5693] softirqs last enabled at (80996): [] handle_softirqs+0xa40/0xbe4 [ 89.579437][ T5693] softirqs last disabled at (80945): [] __irq_exit_rcu+0x240/0x43c [ 89.580934][ T5693] ---[ end trace cf16be9f527b4bd3 ]--- [ 89.584974][ T5693] BTRFS: error (device loop0) in btrfs_add_link:6776: errno=-12 Out of memory [ 89.586426][ T5693] BTRFS info (device loop0): forced readonly [ 89.722273][ T5715] loop0: detected capacity change from 0 to 32768 [ 89.764154][ T5715] BTRFS: device fsid ed167579-eb65-4e76-9a50-61ac97e9b59d devid 1 transid 8 /dev/loop0 scanned by syz.0.52 (5715) [ 89.805040][ T5715] BTRFS info (device loop0): using sha256 (sha256-ce) checksum algorithm [ 89.806524][ T5715] BTRFS info (device loop0): metadata ratio 1025 [ 89.807522][ T5715] BTRFS info (device loop0): doing ref verification [ 89.808574][ T5715] BTRFS info (device loop0): force clearing of disk cache [ 89.809829][ T5715] BTRFS info (device loop0): turning off barriers [ 89.810894][ T5715] BTRFS info (device loop0): setting nodatacow, compression disabled [ 89.812195][ T5715] BTRFS info (device loop0): enabling ssd optimizations [ 89.813356][ T5715] BTRFS info (device loop0): using spread ssd allocation scheme [ 89.814535][ T5715] BTRFS info (device loop0): not using ssd optimizations [ 89.815625][ T5715] BTRFS info (device loop0): not using spread ssd allocation scheme [ 89.816915][ T5715] BTRFS info (device loop0): using free space tree [ 89.818289][ T5715] BTRFS info (device loop0): has skinny extents [ 89.831688][ T5715] BTRFS info (device loop0): clearing free space tree [ 89.833099][ T5715] BTRFS info (device loop0): clearing compat-ro feature flag for FREE_SPACE_TREE (0x1) [ 89.834631][ T5715] BTRFS info (device loop0): clearing compat-ro feature flag for FREE_SPACE_TREE_VALID (0x2) [ 89.839761][ T5715] BTRFS info (device loop0): creating free space tree [ 89.841211][ T5715] BTRFS info (device loop0): setting compat-ro feature flag for FREE_SPACE_TREE (0x1) [ 89.842905][ T5715] BTRFS info (device loop0): setting compat-ro feature flag for FREE_SPACE_TREE_VALID (0x2) [ 89.847797][ T5715] FAULT_INJECTION: forcing a failure. [ 89.847797][ T5715] name failslab, interval 1, probability 0, space 0, times 0 [ 89.849893][ T5715] CPU: 0 PID: 5715 Comm: syz.0.52 Tainted: G W syzkaller #0 [ 89.851387][ T5715] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/26/2026 [ 89.853018][ T5715] Call trace: [ 89.853503][ T5715] dump_backtrace+0x0/0x458 [ 89.854225][ T5715] show_stack+0x2c/0x3c [ 89.854874][ T5715] __dump_stack+0x30/0x40 [ 89.855589][ T5715] dump_stack_lvl+0xf4/0x15c [ 89.856323][ T5715] dump_stack+0x1c/0x5c [ 89.857006][ T5715] should_fail+0x3bc/0x514 [ 89.857690][ T5715] __should_failslab+0xbc/0x10c [ 89.858505][ T5715] should_failslab+0x10/0x28 [ 89.859199][ T5715] slab_pre_alloc_hook+0x64/0xe8 [ 89.860023][ T5715] kmem_cache_alloc+0x94/0x3d4 [ 89.860828][ T5715] btrfs_alloc_path+0x5c/0x68 [ 89.861597][ T5715] btrfs_insert_dir_item+0x184/0x3e8 [ 89.862536][ T5715] btrfs_add_link+0x2b0/0xa9c [ 89.863340][ T5715] btrfs_link+0x3a4/0x694 [ 89.864080][ T5715] vfs_link+0x5b4/0x744 [ 89.864733][ T5715] do_linkat+0x258/0x750 [ 89.865430][ T5715] __arm64_sys_linkat+0xe4/0x100 [ 89.866234][ T5715] invoke_syscall+0x98/0x2b0 [ 89.866983][ T5715] el0_svc_common+0x138/0x258 [ 89.867755][ T5715] do_el0_svc+0x58/0x13c [ 89.868490][ T5715] el0_svc+0x78/0x1d0 [ 89.869119][ T5715] el0t_64_sync_handler+0xcc/0xe4 [ 89.869969][ T5715] el0t_64_sync+0x1a0/0x1a4 [ 89.872570][ T5715] ------------[ cut here ]------------ [ 89.874011][ T5715] WARNING: CPU: 0 PID: 5715 at fs/btrfs/inode.c:6776 btrfs_add_link+0x718/0xa9c [ 89.875399][ T5715] Modules linked in: [ 89.876007][ T5715] CPU: 0 PID: 5715 Comm: syz.0.52 Tainted: G W syzkaller #0 [ 89.877366][ T5715] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/26/2026 [ 89.878952][ T5715] pstate: 62400005 (nZCv daif +PAN -UAO +TCO -DIT -SSBS BTYPE=--) [ 89.880105][ T5715] pc : btrfs_add_link+0x718/0xa9c [ 89.880831][ T5715] lr : btrfs_add_link+0x718/0xa9c [ 89.881541][ T5715] sp : ffff8000232a79e0 [ 89.882167][ T5715] x29: ffff8000232a7ae0 x28: ffff0000deb89d10 x27: 0000000000000107 [ 89.883415][ T5715] x26: 00000000fffffff4 x25: 0000000000000001 x24: dfff800000000000 [ 89.884761][ T5715] x23: 0000000000000005 x22: 1fffe0001bd713ad x21: ffff700004654f44 [ 89.886088][ T5715] x20: 00000000fffffff4 x19: ffff0000deb89d68 x18: 0000000000000001 [ 89.887393][ T5715] x17: 0000000000000000 x16: ffff80001125a830 x15: 00000000ffffffff [ 89.888659][ T5715] x14: 0000000000000001 x13: 1fffe000341f05ab x12: 0000000000ff0100 [ 89.889941][ T5715] x11: 0000000000000000 x10: 0000000000000000 x9 : 4afdca2b3f089c00 [ 89.891279][ T5715] x8 : 4afdca2b3f089c00 x7 : 0000000000000001 x6 : 0000000000000001 [ 89.892645][ T5715] x5 : ffff8000232a72f8 x4 : ffff80001437f3e0 x3 : ffff800008508edc [ 89.893952][ T5715] x2 : 0000000000000001 x1 : 0000000100000000 x0 : 0000000000000026 [ 89.895341][ T5715] Call trace: [ 89.895893][ T5715] btrfs_add_link+0x718/0xa9c [ 89.896665][ T5715] btrfs_link+0x3a4/0x694 [ 89.897346][ T5715] vfs_link+0x5b4/0x744 [ 89.898044][ T5715] do_linkat+0x258/0x750 [ 89.898751][ T5715] __arm64_sys_linkat+0xe4/0x100 [ 89.899649][ T5715] invoke_syscall+0x98/0x2b0 [ 89.900399][ T5715] el0_svc_common+0x138/0x258 [ 89.901138][ T5715] do_el0_svc+0x58/0x13c [ 89.901833][ T5715] el0_svc+0x78/0x1d0 [ 89.902513][ T5715] el0t_64_sync_handler+0xcc/0xe4 [ 89.903348][ T5715] el0t_64_sync+0x1a0/0x1a4 [ 89.904048][ T5715] irq event stamp: 82078 [ 89.904745][ T5715] hardirqs last enabled at (82077): [] __up_console_sem+0xb4/0xfc [ 89.906288][ T5715] hardirqs last disabled at (82078): [] el1_dbg+0x24/0x80 [ 89.907731][ T5715] softirqs last enabled at (82066): [] handle_softirqs+0xa40/0xbe4 [ 89.909209][ T5715] softirqs last disabled at (81967): [] __irq_exit_rcu+0x240/0x43c [ 89.910709][ T5715] ---[ end trace cf16be9f527b4bd4 ]--- [ 89.914531][ T5715] BTRFS: error (device loop0) in btrfs_add_link:6776: errno=-12 Out of memory [ 89.916017][ T5715] BTRFS info (device loop0): forced readonly [ 90.099233][ T5737] loop0: detected capacity change from 0 to 32768 [ 90.144330][ T5737] BTRFS: device fsid ed167579-eb65-4e76-9a50-61ac97e9b59d devid 1 transid 8 /dev/loop0 scanned by syz.0.53 (5737) [ 90.147668][ T5737] BTRFS info (device loop0): using sha256 (sha256-ce) checksum algorithm [ 90.149002][ T5737] BTRFS info (device loop0): metadata ratio 1025 [ 90.150062][ T5737] BTRFS info (device loop0): doing ref verification [ 90.151165][ T5737] BTRFS info (device loop0): force clearing of disk cache [ 90.152398][ T5737] BTRFS info (device loop0): turning off barriers [ 90.159144][ T5737] BTRFS info (device loop0): setting nodatacow, compression disabled [ 90.160536][ T5737] BTRFS info (device loop0): enabling ssd optimizations [ 90.161763][ T5737] BTRFS info (device loop0): using spread ssd allocation scheme [ 90.163129][ T5737] BTRFS info (device loop0): not using ssd optimizations [ 90.164222][ T5737] BTRFS info (device loop0): not using spread ssd allocation scheme [ 90.165606][ T5737] BTRFS info (device loop0): using free space tree [ 90.166713][ T5737] BTRFS info (device loop0): has skinny extents [ 90.175783][ T5737] BTRFS info (device loop0): clearing free space tree [ 90.177053][ T5737] BTRFS info (device loop0): clearing compat-ro feature flag for FREE_SPACE_TREE (0x1) [ 90.178586][ T5737] BTRFS info (device loop0): clearing compat-ro feature flag for FREE_SPACE_TREE_VALID (0x2) [ 90.182497][ T5737] BTRFS info (device loop0): creating free space tree [ 90.184278][ T5737] BTRFS info (device loop0): setting compat-ro feature flag for FREE_SPACE_TREE (0x1) [ 90.185843][ T5737] BTRFS info (device loop0): setting compat-ro feature flag for FREE_SPACE_TREE_VALID (0x2) [ 90.190320][ T5737] FAULT_INJECTION: forcing a failure. [ 90.190320][ T5737] name failslab, interval 1, probability 0, space 0, times 0 [ 90.192673][ T5737] CPU: 1 PID: 5737 Comm: syz.0.53 Tainted: G W syzkaller #0 [ 90.194188][ T5737] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/26/2026 [ 90.195896][ T5737] Call trace: [ 90.196457][ T5737] dump_backtrace+0x0/0x458 [ 90.197217][ T5737] show_stack+0x2c/0x3c [ 90.197901][ T5737] __dump_stack+0x30/0x40 [ 90.198670][ T5737] dump_stack_lvl+0xf4/0x15c [ 90.199441][ T5737] dump_stack+0x1c/0x5c [ 90.200139][ T5737] should_fail+0x3bc/0x514 [ 90.200827][ T5737] __should_failslab+0xbc/0x10c [ 90.201607][ T5737] should_failslab+0x10/0x28 [ 90.202348][ T5737] slab_pre_alloc_hook+0x64/0xe8 [ 90.203170][ T5737] kmem_cache_alloc+0x94/0x3d4 [ 90.204018][ T5737] btrfs_alloc_path+0x5c/0x68 [ 90.204787][ T5737] btrfs_insert_dir_item+0x184/0x3e8 [ 90.205655][ T5737] btrfs_add_link+0x2b0/0xa9c [ 90.206489][ T5737] btrfs_link+0x3a4/0x694 [ 90.207199][ T5737] vfs_link+0x5b4/0x744 [ 90.207914][ T5737] do_linkat+0x258/0x750 [ 90.208609][ T5737] __arm64_sys_linkat+0xe4/0x100 [ 90.209413][ T5737] invoke_syscall+0x98/0x2b0 [ 90.210190][ T5737] el0_svc_common+0x138/0x258 [ 90.210986][ T5737] do_el0_svc+0x58/0x13c [ 90.211665][ T5737] el0_svc+0x78/0x1d0 [ 90.212315][ T5737] el0t_64_sync_handler+0xcc/0xe4 [ 90.213164][ T5737] el0t_64_sync+0x1a0/0x1a4 [ 90.214726][ T5737] ------------[ cut here ]------------ [ 90.215712][ T5737] WARNING: CPU: 1 PID: 5737 at fs/btrfs/inode.c:6776 btrfs_add_link+0x718/0xa9c [ 90.217116][ T5737] Modules linked in: [ 90.217768][ T5737] CPU: 1 PID: 5737 Comm: syz.0.53 Tainted: G W syzkaller #0 [ 90.219019][ T5737] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/26/2026 [ 90.220531][ T5737] pstate: 62400005 (nZCv daif +PAN -UAO +TCO -DIT -SSBS BTYPE=--) [ 90.221747][ T5737] pc : btrfs_add_link+0x718/0xa9c [ 90.222537][ T5737] lr : btrfs_add_link+0x718/0xa9c [ 90.223357][ T5737] sp : ffff8000234179e0 [ 90.224011][ T5737] x29: ffff800023417ae0 x28: ffff0000deabc4d0 x27: 0000000000000107 [ 90.225399][ T5737] x26: 00000000fffffff4 x25: 0000000000000001 x24: dfff800000000000 [ 90.226720][ T5737] x23: 0000000000000005 x22: 1fffe0001bd578a5 x21: ffff700004682f44 [ 90.228152][ T5737] x20: 00000000fffffff4 x19: ffff0000deabc528 x18: 0000000000000001 [ 90.229420][ T5737] x17: 0000000000000000 x16: ffff8000083049fc x15: 00000000ffffffff [ 90.230711][ T5737] x14: 0000000000000001 x13: 1ffff00004682e5c x12: 0000000000ff0100 [ 90.231943][ T5737] x11: 0000000000000000 x10: 0000000000000000 x9 : 5dd2d574eed81c00 [ 90.233185][ T5737] x8 : 5dd2d574eed81c00 x7 : 0000000000000001 x6 : 0000000000000001 [ 90.234537][ T5737] x5 : ffff8000234172f8 x4 : ffff80001437f3e0 x3 : ffff800008304b0c [ 90.235900][ T5737] x2 : 0000000000000001 x1 : 0000000100000000 x0 : 0000000000000026 [ 90.237181][ T5737] Call trace: [ 90.237747][ T5737] btrfs_add_link+0x718/0xa9c [ 90.238493][ T5737] btrfs_link+0x3a4/0x694 [ 90.239195][ T5737] vfs_link+0x5b4/0x744 [ 90.239870][ T5737] do_linkat+0x258/0x750 [ 90.240590][ T5737] __arm64_sys_linkat+0xe4/0x100 [ 90.241413][ T5737] invoke_syscall+0x98/0x2b0 [ 90.242145][ T5737] el0_svc_common+0x138/0x258 [ 90.242925][ T5737] do_el0_svc+0x58/0x13c [ 90.243614][ T5737] el0_svc+0x78/0x1d0 [ 90.244280][ T5737] el0t_64_sync_handler+0xcc/0xe4 [ 90.245098][ T5737] el0t_64_sync+0x1a0/0x1a4 [ 90.245812][ T5737] irq event stamp: 80938 [ 90.246491][ T5737] hardirqs last enabled at (80937): [] __up_console_sem+0xb4/0xfc [ 90.247998][ T5737] hardirqs last disabled at (80938): [] el1_dbg+0x24/0x80 [ 90.249406][ T5737] softirqs last enabled at (80918): [] handle_softirqs+0xa40/0xbe4 [ 90.250979][ T5737] softirqs last disabled at (80821): [] __irq_exit_rcu+0x240/0x43c [ 90.252487][ T5737] ---[ end trace cf16be9f527b4bd5 ]--- [ 90.253738][ T5737] BTRFS: error (device loop0) in btrfs_add_link:6776: errno=-12 Out of memory [ 90.255190][ T5737] BTRFS info (device loop0): forced readonly [ 90.451294][ T5759] loop0: detected capacity change from 0 to 32768 [ 90.488149][ T5759] BTRFS: device fsid ed167579-eb65-4e76-9a50-61ac97e9b59d devid 1 transid 8 /dev/loop0 scanned by syz.0.54 (5759) [ 90.491803][ T5759] BTRFS info (device loop0): using sha256 (sha256-ce) checksum algorithm [ 90.493256][ T5759] BTRFS info (device loop0): metadata ratio 1025 [ 90.494312][ T5759] BTRFS info (device loop0): doing ref verification [ 90.495438][ T5759] BTRFS info (device loop0): force clearing of disk cache [ 90.496641][ T5759] BTRFS info (device loop0): turning off barriers [ 90.499737][ T5759] BTRFS info (device loop0): setting nodatacow, compression disabled [ 90.501035][ T5759] BTRFS info (device loop0): enabling ssd optimizations [ 90.502210][ T5759] BTRFS info (device loop0): using spread ssd allocation scheme [ 90.503671][ T5759] BTRFS info (device loop0): not using ssd optimizations [ 90.504775][ T5759] BTRFS info (device loop0): not using spread ssd allocation scheme [ 90.506119][ T5759] BTRFS info (device loop0): using free space tree [ 90.507202][ T5759] BTRFS info (device loop0): has skinny extents [ 90.520727][ T5759] BTRFS info (device loop0): clearing free space tree [ 90.521874][ T5759] BTRFS info (device loop0): clearing compat-ro feature flag for FREE_SPACE_TREE (0x1) [ 90.524086][ T5759] BTRFS info (device loop0): clearing compat-ro feature flag for FREE_SPACE_TREE_VALID (0x2) [ 90.527381][ T5759] BTRFS info (device loop0): creating free space tree [ 90.528857][ T5759] BTRFS info (device loop0): setting compat-ro feature flag for FREE_SPACE_TREE (0x1) [ 90.530504][ T5759] BTRFS info (device loop0): setting compat-ro feature flag for FREE_SPACE_TREE_VALID (0x2) [ 90.536240][ T5759] FAULT_INJECTION: forcing a failure. [ 90.536240][ T5759] name failslab, interval 1, probability 0, space 0, times 0 [ 90.538392][ T5759] CPU: 1 PID: 5759 Comm: syz.0.54 Tainted: G W syzkaller #0 [ 90.539750][ T5759] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/26/2026 [ 90.541278][ T5759] Call trace: [ 90.541783][ T5759] dump_backtrace+0x0/0x458 [ 90.542521][ T5759] show_stack+0x2c/0x3c [ 90.543199][ T5759] __dump_stack+0x30/0x40 [ 90.543996][ T5759] dump_stack_lvl+0xf4/0x15c [ 90.544810][ T5759] dump_stack+0x1c/0x5c [ 90.545431][ T5759] should_fail+0x3bc/0x514 [ 90.546080][ T5759] __should_failslab+0xbc/0x10c [ 90.546796][ T5759] should_failslab+0x10/0x28 [ 90.547492][ T5759] slab_pre_alloc_hook+0x64/0xe8 [ 90.548193][ T5759] kmem_cache_alloc+0x94/0x3d4 [ 90.548905][ T5759] btrfs_alloc_path+0x5c/0x68 [ 90.549598][ T5759] btrfs_insert_dir_item+0x184/0x3e8 [ 90.550471][ T5759] btrfs_add_link+0x2b0/0xa9c [ 90.551277][ T5759] btrfs_link+0x3a4/0x694 [ 90.551944][ T5759] vfs_link+0x5b4/0x744 [ 90.552593][ T5759] do_linkat+0x258/0x750 [ 90.553299][ T5759] __arm64_sys_linkat+0xe4/0x100 [ 90.553999][ T5759] invoke_syscall+0x98/0x2b0 [ 90.554668][ T5759] el0_svc_common+0x138/0x258 [ 90.555336][ T5759] do_el0_svc+0x58/0x13c [ 90.555994][ T5759] el0_svc+0x78/0x1d0 [ 90.556633][ T5759] el0t_64_sync_handler+0xcc/0xe4 [ 90.557498][ T5759] el0t_64_sync+0x1a0/0x1a4 [ 90.560252][ T5759] ------------[ cut here ]------------ [ 90.561303][ T5759] WARNING: CPU: 1 PID: 5759 at fs/btrfs/inode.c:6776 btrfs_add_link+0x718/0xa9c [ 90.562709][ T5759] Modules linked in: [ 90.563340][ T5759] CPU: 1 PID: 5759 Comm: syz.0.54 Tainted: G W syzkaller #0 [ 90.564807][ T5759] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/26/2026 [ 90.566412][ T5759] pstate: 62400005 (nZCv daif +PAN -UAO +TCO -DIT -SSBS BTYPE=--) [ 90.567638][ T5759] pc : btrfs_add_link+0x718/0xa9c [ 90.568417][ T5759] lr : btrfs_add_link+0x718/0xa9c [ 90.569243][ T5759] sp : ffff8000234279e0 [ 90.569881][ T5759] x29: ffff800023427ae0 x28: ffff0000deabc790 x27: 0000000000000107 [ 90.571275][ T5759] x26: 00000000fffffff4 x25: 0000000000000001 x24: dfff800000000000 [ 90.572580][ T5759] x23: 0000000000000005 x22: 1fffe0001bd578fd x21: ffff700004684f44 [ 90.573930][ T5759] x20: 00000000fffffff4 x19: ffff0000deabc7e8 x18: 0000000000000001 [ 90.575175][ T5759] x17: 0000000000000000 x16: ffff80001125a830 x15: 00000000ffffffff [ 90.576521][ T5759] x14: 0000000000000001 x13: 1fffe000341f47ab x12: 0000000000ff0100 [ 90.577785][ T5759] x11: 0000000000000000 x10: 0000000000000000 x9 : 707d1a1ee0508f00 [ 90.579121][ T5759] x8 : 707d1a1ee0508f00 x7 : 0000000000000001 x6 : 0000000000000001 [ 90.580553][ T5759] x5 : ffff8000234272f8 x4 : ffff80001437f3e0 x3 : ffff800008508edc [ 90.581923][ T5759] x2 : 0000000000000001 x1 : 0000000100000000 x0 : 0000000000000026 [ 90.583300][ T5759] Call trace: [ 90.583872][ T5759] btrfs_add_link+0x718/0xa9c [ 90.584680][ T5759] btrfs_link+0x3a4/0x694 [ 90.585435][ T5759] vfs_link+0x5b4/0x744 [ 90.586132][ T5759] do_linkat+0x258/0x750 [ 90.586862][ T5759] __arm64_sys_linkat+0xe4/0x100 [ 90.587715][ T5759] invoke_syscall+0x98/0x2b0 [ 90.588473][ T5759] el0_svc_common+0x138/0x258 [ 90.589257][ T5759] do_el0_svc+0x58/0x13c [ 90.589927][ T5759] el0_svc+0x78/0x1d0 [ 90.590632][ T5759] el0t_64_sync_handler+0xcc/0xe4 [ 90.591408][ T5759] el0t_64_sync+0x1a0/0x1a4 [ 90.592146][ T5759] irq event stamp: 82112 [ 90.592839][ T5759] hardirqs last enabled at (82111): [] __up_console_sem+0xb4/0xfc [ 90.594303][ T5759] hardirqs last disabled at (82112): [] el1_dbg+0x24/0x80 [ 90.595700][ T5759] softirqs last enabled at (82092): [] handle_softirqs+0xa40/0xbe4 [ 90.597181][ T5759] softirqs last disabled at (82059): [] __irq_exit_rcu+0x240/0x43c [ 90.598596][ T5759] ---[ end trace cf16be9f527b4bd6 ]--- [ 90.601539][ T5759] BTRFS: error (device loop0) in btrfs_add_link:6776: errno=-12 Out of memory [ 90.603097][ T5759] BTRFS info (device loop0): forced readonly [ 90.789787][ T5781] loop0: detected capacity change from 0 to 32768 [ 90.825565][ T5781] BTRFS: device fsid ed167579-eb65-4e76-9a50-61ac97e9b59d devid 1 transid 8 /dev/loop0 scanned by syz.0.55 (5781) [ 90.832410][ T5781] BTRFS info (device loop0): using sha256 (sha256-ce) checksum algorithm [ 90.833936][ T5781] BTRFS info (device loop0): metadata ratio 1025 [ 90.834928][ T5781] BTRFS info (device loop0): doing ref verification [ 90.836075][ T5781] BTRFS info (device loop0): force clearing of disk cache [ 90.837264][ T5781] BTRFS info (device loop0): turning off barriers [ 90.862212][ T5781] FAULT_INJECTION: forcing a failure. [ 90.862212][ T5781] name failslab, interval 1, probability 0, space 0, times 0 [ 90.864869][ T5781] CPU: 1 PID: 5781 Comm: syz.0.55 Tainted: G W syzkaller #0 [ 90.866254][ T5781] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/26/2026 [ 90.867988][ T5781] Call trace: [ 90.868492][ T5781] dump_backtrace+0x0/0x458 [ 90.869135][ T5781] show_stack+0x2c/0x3c [ 90.869851][ T5781] __dump_stack+0x30/0x40 [ 90.870563][ T5781] dump_stack_lvl+0xf4/0x15c [ 90.871302][ T5781] dump_stack+0x1c/0x5c [ 90.871910][ T5781] should_fail+0x3bc/0x514 [ 90.872559][ T5781] __should_failslab+0xbc/0x10c [ 90.873312][ T5781] should_failslab+0x10/0x28 [ 90.874033][ T5781] slab_pre_alloc_hook+0x64/0xe8 [ 90.874788][ T5781] kmem_cache_alloc+0x94/0x3d4 [ 90.875507][ T5781] btrfs_alloc_path+0x5c/0x68 [ 90.876215][ T5781] btrfs_insert_dir_item+0x184/0x3e8 [ 90.877048][ T5781] btrfs_add_link+0x2b0/0xa9c [ 90.877769][ T5781] btrfs_link+0x3a4/0x694 [ 90.878399][ T5781] vfs_link+0x5b4/0x744 [ 90.879000][ T5781] do_linkat+0x258/0x750 [ 90.879668][ T5781] __arm64_sys_linkat+0xe4/0x100 [ 90.880443][ T5781] invoke_syscall+0x98/0x2b0 [ 90.881192][ T5781] el0_svc_common+0x138/0x258 [ 90.881988][ T5781] do_el0_svc+0x58/0x13c [ 90.882759][ T5781] el0_svc+0x78/0x1d0 [ 90.883455][ T5781] el0t_64_sync_handler+0xcc/0xe4 [ 90.884308][ T5781] el0t_64_sync+0x1a0/0x1a4 [ 90.887259][ T5781] ------------[ cut here ]------------ [ 90.888229][ T5781] WARNING: CPU: 1 PID: 5781 at fs/btrfs/inode.c:6776 btrfs_add_link+0x718/0xa9c [ 90.889644][ T5781] Modules linked in: [ 90.890317][ T5781] CPU: 1 PID: 5781 Comm: syz.0.55 Tainted: G W syzkaller #0 [ 90.891573][ T5781] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/26/2026 [ 90.893181][ T5781] pstate: 62400005 (nZCv daif +PAN -UAO +TCO -DIT -SSBS BTYPE=--) [ 90.894500][ T5781] pc : btrfs_add_link+0x718/0xa9c [ 90.895367][ T5781] lr : btrfs_add_link+0x718/0xa9c [ 90.896226][ T5781] sp : ffff8000235579e0 [ 90.896901][ T5781] x29: ffff800023557ae0 x28: ffff0000deabca50 x27: 0000000000000107 [ 90.898195][ T5781] x26: 00000000fffffff4 x25: 0000000000000001 x24: dfff800000000000 [ 90.899574][ T5781] x23: 0000000000000005 x22: 1fffe0001bd57955 x21: ffff7000046aaf44 [ 90.900842][ T5781] x20: 00000000fffffff4 x19: ffff0000deabcaa8 x18: 0000000000000001 [ 90.902211][ T5781] x17: 0000000000000000 x16: ffff80001125a830 x15: 00000000ffffffff [ 90.903570][ T5781] x14: 0000000000000001 x13: 1fffe000341f47ab x12: 0000000000ff0100 [ 90.904927][ T5781] x11: 0000000000000000 x10: 0000000000000000 x9 : e7508e6e27930300 [ 90.906345][ T5781] x8 : e7508e6e27930300 x7 : 0000000000000001 x6 : 0000000000000001 [ 90.907757][ T5781] x5 : ffff8000235572f8 x4 : ffff80001437f3e0 x3 : ffff800008508edc [ 90.909102][ T5781] x2 : 0000000000000001 x1 : 0000000100000000 x0 : 0000000000000026 [ 90.910422][ T5781] Call trace: [ 90.911059][ T5781] btrfs_add_link+0x718/0xa9c [ 90.911864][ T5781] btrfs_link+0x3a4/0x694 [ 90.912619][ T5781] vfs_link+0x5b4/0x744 [ 90.913344][ T5781] do_linkat+0x258/0x750 [ 90.914023][ T5781] __arm64_sys_linkat+0xe4/0x100 [ 90.914809][ T5781] invoke_syscall+0x98/0x2b0 [ 90.915645][ T5781] el0_svc_common+0x138/0x258 [ 90.916458][ T5781] do_el0_svc+0x58/0x13c [ 90.917192][ T5781] el0_svc+0x78/0x1d0 [ 90.917846][ T5781] el0t_64_sync_handler+0xcc/0xe4 [ 90.918682][ T5781] el0t_64_sync+0x1a0/0x1a4 [ 90.919419][ T5781] irq event stamp: 81224 [ 90.920076][ T5781] hardirqs last enabled at (81223): [] __up_console_sem+0xb4/0xfc [ 90.921585][ T5781] hardirqs last disabled at (81224): [] el1_dbg+0x24/0x80 [ 90.922926][ T5781] softirqs last enabled at (81204): [] handle_softirqs+0xa40/0xbe4 [ 90.924445][ T5781] softirqs last disabled at (81191): [] __irq_exit_rcu+0x240/0x43c [ 90.925957][ T5781] ---[ end trace cf16be9f527b4bd7 ]--- [ 90.929241][ T5781] BTRFS: error (device loop0) in btrfs_add_link:6776: errno=-12 Out of memory