Warning: Permanently added '10.128.1.174' (ED25519) to the list of known hosts. 1970/01/01 00:01:07 parsed 1 programs [ 68.537651][ T4426] Adding 124996k swap on ./swap-file. Priority:0 extents:1 across:124996k SSFS [ 69.628368][ T2064] ieee802154 phy0 wpan0: encryption failed: -22 [ 69.628777][ T1968] cfg80211: failed to load regulatory.db [ 69.629573][ T2064] ieee802154 phy1 wpan1: encryption failed: -22 [ 70.363768][ T4558] chnl_net:caif_netlink_parms(): no params data found [ 70.380183][ T4558] bridge0: port 1(bridge_slave_0) entered blocking state [ 70.381547][ T4558] bridge0: port 1(bridge_slave_0) entered disabled state [ 70.383090][ T4558] device bridge_slave_0 entered promiscuous mode [ 70.385168][ T4558] bridge0: port 2(bridge_slave_1) entered blocking state [ 70.386418][ T4558] bridge0: port 2(bridge_slave_1) entered disabled state [ 70.388099][ T4558] device bridge_slave_1 entered promiscuous mode [ 70.395172][ T4558] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 70.397948][ T4558] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 70.406242][ T4558] team0: Port device team_slave_0 added [ 70.409638][ T4558] team0: Port device team_slave_1 added [ 70.415808][ T4558] batman_adv: batadv0: Adding interface: batadv_slave_0 [ 70.417397][ T4558] 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. [ 70.421588][ T4558] batman_adv: batadv0: Not using interface batadv_slave_0 (retrying later): interface not active [ 70.423991][ T4558] batman_adv: batadv0: Adding interface: batadv_slave_1 [ 70.425200][ T4558] 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. [ 70.430024][ T4558] batman_adv: batadv0: Not using interface batadv_slave_1 (retrying later): interface not active [ 70.487868][ T4558] device hsr_slave_0 entered promiscuous mode [ 70.547130][ T4558] device hsr_slave_1 entered promiscuous mode [ 71.179754][ T4558] netdevsim netdevsim0 netdevsim0: renamed from eth0 [ 71.228558][ T4558] netdevsim netdevsim0 netdevsim1: renamed from eth1 [ 71.267943][ T4558] netdevsim netdevsim0 netdevsim2: renamed from eth2 [ 71.318657][ T4558] netdevsim netdevsim0 netdevsim3: renamed from eth3 [ 71.371859][ T4558] bridge0: port 2(bridge_slave_1) entered blocking state [ 71.373098][ T4558] bridge0: port 2(bridge_slave_1) entered forwarding state [ 71.374535][ T4558] bridge0: port 1(bridge_slave_0) entered blocking state [ 71.375793][ T4558] bridge0: port 1(bridge_slave_0) entered forwarding state [ 71.403076][ T136] bridge0: port 1(bridge_slave_0) entered disabled state [ 71.404698][ T136] bridge0: port 2(bridge_slave_1) entered disabled state [ 71.418210][ T4558] 8021q: adding VLAN 0 to HW filter on device bond0 [ 71.422232][ T136] IPv6: ADDRCONF(NETDEV_CHANGE): veth1: link becomes ready [ 71.423682][ T136] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 71.426547][ T4558] 8021q: adding VLAN 0 to HW filter on device team0 [ 71.431250][ T136] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bridge: link becomes ready [ 71.432817][ T136] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 71.434408][ T136] bridge0: port 1(bridge_slave_0) entered blocking state [ 71.435546][ T136] bridge0: port 1(bridge_slave_0) entered forwarding state [ 71.438361][ T1620] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bridge: link becomes ready [ 71.439990][ T1620] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 71.441450][ T1620] bridge0: port 2(bridge_slave_1) entered blocking state [ 71.442650][ T1620] bridge0: port 2(bridge_slave_1) entered forwarding state [ 71.451902][ T4558] hsr0: Slave A (hsr_slave_0) is not up; please bring it up to get a fully working HSR network [ 71.453624][ T4558] hsr0: Slave B (hsr_slave_1) is not up; please bring it up to get a fully working HSR network [ 71.456157][ T136] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bond: link becomes ready [ 71.458505][ T136] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bond: link becomes ready [ 71.460276][ T136] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_team: link becomes ready [ 71.462106][ T136] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 71.463618][ T136] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_team: link becomes ready [ 71.465329][ T136] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 71.466860][ T136] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_hsr: link becomes ready [ 71.468786][ T136] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 71.470479][ T136] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_hsr: link becomes ready [ 71.471996][ T136] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 71.473603][ T136] IPv6: ADDRCONF(NETDEV_CHANGE): team0: link becomes ready [ 71.475209][ T136] IPv6: ADDRCONF(NETDEV_CHANGE): hsr0: link becomes ready [ 71.559845][ T4558] 8021q: adding VLAN 0 to HW filter on device batadv0 [ 71.567590][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan1: link becomes ready [ 71.569054][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan0: link becomes ready [ 71.570452][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_virt_wifi: link becomes ready [ 71.572329][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_virt_wifi: link becomes ready [ 71.590280][ T136] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_vlan: link becomes ready [ 71.591883][ T136] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_vlan: link becomes ready [ 71.593455][ T4558] device veth0_vlan entered promiscuous mode [ 71.594707][ T136] IPv6: ADDRCONF(NETDEV_CHANGE): vlan0: link becomes ready [ 71.596118][ T136] IPv6: ADDRCONF(NETDEV_CHANGE): vlan1: link becomes ready [ 71.603872][ T4558] device veth1_vlan entered promiscuous mode [ 71.612126][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan0: link becomes ready [ 71.613631][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan1: link becomes ready [ 71.614947][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_macvtap: link becomes ready [ 71.616398][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_macvtap: link becomes ready [ 71.621155][ T4558] device veth0_macvtap entered promiscuous mode [ 71.623423][ T4558] device veth1_macvtap entered promiscuous mode [ 71.630910][ T4558] batman_adv: batadv0: Interface activated: batadv_slave_0 [ 71.633436][ T4558] batman_adv: batadv0: Interface activated: batadv_slave_1 [ 71.635713][ T4558] netdevsim netdevsim0 netdevsim0: set [1, 0] type 2 family 0 port 6081 - 0 [ 71.645383][ T4558] netdevsim netdevsim0 netdevsim1: set [1, 0] type 2 family 0 port 6081 - 0 [ 71.646859][ T4558] netdevsim netdevsim0 netdevsim2: set [1, 0] type 2 family 0 port 6081 - 0 [ 71.648354][ T4558] netdevsim netdevsim0 netdevsim3: set [1, 0] type 2 family 0 port 6081 - 0 [ 71.654039][ T136] IPv6: ADDRCONF(NETDEV_CHANGE): macvtap0: link becomes ready [ 71.655475][ T136] IPv6: ADDRCONF(NETDEV_CHANGE): macsec0: link becomes ready [ 71.663421][ T136] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_0: link becomes ready [ 71.665085][ T136] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_batadv: link becomes ready [ 71.667208][ T136] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_1: link becomes ready [ 71.668971][ T136] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_batadv: link becomes ready [ 71.799417][ T136] wlan0: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 71.800841][ T136] wlan0: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 71.802234][ T136] IPv6: ADDRCONF(NETDEV_CHANGE): wlan0: link becomes ready [ 71.812025][ T1620] wlan1: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 71.813314][ T1620] wlan1: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 71.814659][ T1620] IPv6: ADDRCONF(NETDEV_CHANGE): wlan1: link becomes ready 1970/01/01 00:01:12 executed programs: 0 [ 72.112018][ T4761] chnl_net:caif_netlink_parms(): no params data found [ 72.139514][ T4761] bridge0: port 1(bridge_slave_0) entered blocking state [ 72.140737][ T4761] bridge0: port 1(bridge_slave_0) entered disabled state [ 72.142286][ T4761] device bridge_slave_0 entered promiscuous mode [ 72.144252][ T4761] bridge0: port 2(bridge_slave_1) entered blocking state [ 72.145346][ T4761] bridge0: port 2(bridge_slave_1) entered disabled state [ 72.149546][ T4761] device bridge_slave_1 entered promiscuous mode [ 72.169350][ T4761] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 72.171792][ T4761] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 72.180150][ T4761] team0: Port device team_slave_0 added [ 72.182217][ T4761] team0: Port device team_slave_1 added [ 72.194528][ T4761] batman_adv: batadv0: Adding interface: batadv_slave_0 [ 72.195757][ T4761] 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. [ 72.201227][ T4761] batman_adv: batadv0: Not using interface batadv_slave_0 (retrying later): interface not active [ 72.203691][ T4761] batman_adv: batadv0: Adding interface: batadv_slave_1 [ 72.204842][ T4761] 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. [ 72.209617][ T4761] batman_adv: batadv0: Not using interface batadv_slave_1 (retrying later): interface not active [ 72.258042][ T4761] device hsr_slave_0 entered promiscuous mode [ 72.287147][ T4761] device hsr_slave_1 entered promiscuous mode [ 72.326983][ T4761] debugfs: Directory 'hsr0' with parent 'hsr' already present! [ 72.328225][ T4761] Cannot create hsr debugfs directory [ 72.354907][ T4761] netdevsim netdevsim0 netdevsim3 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 74.107786][ T25] Bluetooth: hci0: command 0x0409 tx timeout [ 75.170473][ T4761] netdevsim netdevsim0 netdevsim2 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 76.196926][ T25] Bluetooth: hci0: command 0x041b tx timeout [ 77.490966][ T4761] netdevsim netdevsim0 netdevsim1 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 77.542172][ T4761] netdevsim netdevsim0 netdevsim0 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 77.736724][ T4761] netdevsim netdevsim0 netdevsim0: renamed from eth0 [ 77.778117][ T4761] netdevsim netdevsim0 netdevsim1: renamed from eth1 [ 77.817969][ T4761] netdevsim netdevsim0 netdevsim2: renamed from eth2 [ 77.874100][ T4761] netdevsim netdevsim0 netdevsim3: renamed from eth3 [ 77.929434][ T4761] 8021q: adding VLAN 0 to HW filter on device bond0 [ 77.933133][ T543] IPv6: ADDRCONF(NETDEV_CHANGE): veth1: link becomes ready [ 77.934720][ T543] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 77.937916][ T4761] 8021q: adding VLAN 0 to HW filter on device team0 [ 77.940401][ T543] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bridge: link becomes ready [ 77.942003][ T543] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 77.943543][ T543] bridge0: port 1(bridge_slave_0) entered blocking state [ 77.944734][ T543] bridge0: port 1(bridge_slave_0) entered forwarding state [ 77.946145][ T543] IPv6: ADDRCONF(NETDEV_CHANGE): bridge0: link becomes ready [ 77.949606][ T543] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bridge: link becomes ready [ 77.951197][ T543] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 77.952716][ T543] bridge0: port 2(bridge_slave_1) entered blocking state [ 77.953914][ T543] bridge0: port 2(bridge_slave_1) entered forwarding state [ 77.956593][ T543] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bond: link becomes ready [ 77.959778][ T543] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bond: link becomes ready [ 77.962973][ T543] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_team: link becomes ready [ 77.964801][ T543] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 77.966318][ T543] IPv6: ADDRCONF(NETDEV_CHANGE): team0: link becomes ready [ 77.969663][ T543] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_team: link becomes ready [ 77.971451][ T543] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 77.974069][ T543] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_hsr: link becomes ready [ 77.975589][ T543] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 77.978505][ T543] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_hsr: link becomes ready [ 77.980117][ T543] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 77.982571][ T4761] IPv6: ADDRCONF(NETDEV_CHANGE): hsr0: link becomes ready [ 78.020095][ T136] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan1: link becomes ready [ 78.021535][ T136] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan0: link becomes ready [ 78.025027][ T4761] 8021q: adding VLAN 0 to HW filter on device batadv0 [ 78.037306][ T136] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_virt_wifi: link becomes ready [ 78.039042][ T136] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_virt_wifi: link becomes ready [ 78.045143][ T136] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_vlan: link becomes ready [ 78.046698][ T136] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_vlan: link becomes ready [ 78.048822][ T136] IPv6: ADDRCONF(NETDEV_CHANGE): vlan0: link becomes ready [ 78.050237][ T136] IPv6: ADDRCONF(NETDEV_CHANGE): vlan1: link becomes ready [ 78.052467][ T4761] device veth0_vlan entered promiscuous mode [ 78.055740][ T4761] device veth1_vlan entered promiscuous mode [ 78.062676][ T136] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan0: link becomes ready [ 78.064732][ T136] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan1: link becomes ready [ 78.066288][ T136] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_macvtap: link becomes ready [ 78.068847][ T136] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_macvtap: link becomes ready [ 78.071305][ T4761] device veth0_macvtap entered promiscuous mode [ 78.074044][ T4761] device veth1_macvtap entered promiscuous mode [ 78.078950][ T4761] batman_adv: The newly added mac address (aa:aa:aa:aa:aa:3e) already exists on: batadv_slave_0 [ 78.080786][ T4761] batman_adv: It is strongly recommended to keep mac addresses unique to avoid problems! [ 78.083007][ T4761] batman_adv: batadv0: Interface activated: batadv_slave_0 [ 78.084284][ T136] IPv6: ADDRCONF(NETDEV_CHANGE): macvtap0: link becomes ready [ 78.085879][ T136] IPv6: ADDRCONF(NETDEV_CHANGE): macsec0: link becomes ready [ 78.088037][ T136] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_0: link becomes ready [ 78.089674][ T136] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_batadv: link becomes ready [ 78.092111][ T4761] batman_adv: The newly added mac address (aa:aa:aa:aa:aa:3f) already exists on: batadv_slave_1 [ 78.093868][ T4761] batman_adv: It is strongly recommended to keep mac addresses unique to avoid problems! [ 78.095980][ T4761] batman_adv: batadv0: Interface activated: batadv_slave_1 [ 78.104670][ T543] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_1: link becomes ready [ 78.106269][ T543] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_batadv: link becomes ready [ 78.109137][ T4761] netdevsim netdevsim0 netdevsim0: set [1, 0] type 2 family 0 port 6081 - 0 [ 78.110646][ T4761] netdevsim netdevsim0 netdevsim1: set [1, 0] type 2 family 0 port 6081 - 0 [ 78.112072][ T4761] netdevsim netdevsim0 netdevsim2: set [1, 0] type 2 family 0 port 6081 - 0 [ 78.113514][ T4761] netdevsim netdevsim0 netdevsim3: set [1, 0] type 2 family 0 port 6081 - 0 [ 78.131659][ T136] wlan0: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 78.133741][ T136] wlan0: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 78.135496][ T148] IPv6: ADDRCONF(NETDEV_CHANGE): wlan0: link becomes ready [ 78.144654][ T148] wlan1: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 78.145986][ T148] wlan1: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 78.147729][ T543] IPv6: ADDRCONF(NETDEV_CHANGE): wlan1: link becomes ready 1970/01/01 00:01:18 executed programs: 2 [ 78.261469][ T4952] loop0: detected capacity change from 0 to 32768 [ 78.267342][ T4191] Bluetooth: hci0: command 0x040f tx timeout [ 78.269104][ T4952] BTRFS: device fsid ed167579-eb65-4e76-9a50-61ac97e9b59d devid 1 transid 8 /dev/loop0 scanned by syz.0.16 (4952) [ 78.274369][ T4952] BTRFS info (device loop0): using sha256 (sha256-ce) checksum algorithm [ 78.275854][ T4952] BTRFS info (device loop0): metadata ratio 1025 [ 78.277036][ T4952] BTRFS info (device loop0): doing ref verification [ 78.278136][ T4952] BTRFS info (device loop0): force clearing of disk cache [ 78.279312][ T4952] BTRFS info (device loop0): turning off barriers [ 78.280438][ T4952] BTRFS info (device loop0): setting nodatacow, compression disabled [ 78.281821][ T4952] BTRFS info (device loop0): enabling ssd optimizations [ 78.283094][ T4952] BTRFS info (device loop0): using spread ssd allocation scheme [ 78.284239][ T4952] BTRFS info (device loop0): not using ssd optimizations [ 78.285425][ T4952] BTRFS info (device loop0): not using spread ssd allocation scheme [ 78.286753][ T4952] BTRFS info (device loop0): using free space tree [ 78.287968][ T4952] BTRFS info (device loop0): has skinny extents [ 78.305685][ T4952] BTRFS info (device loop0): clearing free space tree [ 78.307140][ T4952] BTRFS info (device loop0): clearing compat-ro feature flag for FREE_SPACE_TREE (0x1) [ 78.308659][ T4952] BTRFS info (device loop0): clearing compat-ro feature flag for FREE_SPACE_TREE_VALID (0x2) [ 78.315494][ T4952] BTRFS info (device loop0): creating free space tree [ 78.317628][ T4952] BTRFS info (device loop0): setting compat-ro feature flag for FREE_SPACE_TREE (0x1) [ 78.319237][ T4952] BTRFS info (device loop0): setting compat-ro feature flag for FREE_SPACE_TREE_VALID (0x2) [ 78.326098][ T4952] FAULT_INJECTION: forcing a failure. [ 78.326098][ T4952] name failslab, interval 1, probability 0, space 0, times 1 [ 78.328590][ T4952] CPU: 1 PID: 4952 Comm: syz.0.16 Not tainted syzkaller #0 [ 78.329784][ T4952] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/18/2026 [ 78.331416][ T4952] Call trace: [ 78.331949][ T4952] dump_backtrace+0x0/0x458 [ 78.332683][ T4952] show_stack+0x2c/0x3c [ 78.333327][ T4952] __dump_stack+0x30/0x40 [ 78.334103][ T4952] dump_stack_lvl+0xf4/0x15c [ 78.334858][ T4952] dump_stack+0x1c/0x5c [ 78.335558][ T4952] should_fail+0x3bc/0x514 [ 78.336281][ T4952] __should_failslab+0xbc/0x10c [ 78.337156][ T4952] should_failslab+0x10/0x28 [ 78.337963][ T4952] slab_pre_alloc_hook+0x64/0xe8 [ 78.338827][ T4952] kmem_cache_alloc+0x94/0x3d4 [ 78.339626][ T4952] btrfs_alloc_path+0x5c/0x68 [ 78.340428][ T4952] btrfs_insert_inode_ref+0xf0/0xa2c [ 78.341298][ T4952] btrfs_add_link+0x248/0xa9c [ 78.342082][ T4952] btrfs_link+0x3a4/0x694 [ 78.342827][ T4952] vfs_link+0x5b4/0x744 [ 78.343475][ T4952] do_linkat+0x258/0x750 [ 78.344236][ T4952] __arm64_sys_linkat+0xe4/0x100 [ 78.345040][ T4952] invoke_syscall+0x98/0x2b0 [ 78.345827][ T4952] el0_svc_common+0x138/0x258 [ 78.346608][ T4952] do_el0_svc+0x58/0x13c [ 78.347384][ T4952] el0_svc+0x78/0x1d0 [ 78.348044][ T4952] el0t_64_sync_handler+0xcc/0xe4 [ 78.348846][ T4952] el0t_64_sync+0x1a0/0x1a4 [ 78.521312][ T4974] loop0: detected capacity change from 0 to 32768 [ 78.562891][ T4974] BTRFS: device fsid ed167579-eb65-4e76-9a50-61ac97e9b59d devid 1 transid 8 /dev/loop0 scanned by syz.0.17 (4974) [ 78.568635][ T4974] BTRFS info (device loop0): using sha256 (sha256-ce) checksum algorithm [ 78.570134][ T4974] BTRFS info (device loop0): metadata ratio 1025 [ 78.571198][ T4974] BTRFS info (device loop0): doing ref verification [ 78.572351][ T4974] BTRFS info (device loop0): force clearing of disk cache [ 78.573552][ T4974] BTRFS info (device loop0): turning off barriers [ 78.574615][ T4974] BTRFS info (device loop0): setting nodatacow, compression disabled [ 78.575998][ T4974] BTRFS info (device loop0): enabling ssd optimizations [ 78.578072][ T4974] BTRFS info (device loop0): using spread ssd allocation scheme [ 78.579361][ T4974] BTRFS info (device loop0): not using ssd optimizations [ 78.580490][ T4974] BTRFS info (device loop0): not using spread ssd allocation scheme [ 78.581865][ T4974] BTRFS info (device loop0): using free space tree [ 78.582977][ T4974] BTRFS info (device loop0): has skinny extents [ 78.601925][ T4974] BTRFS info (device loop0): clearing free space tree [ 78.603178][ T4974] BTRFS info (device loop0): clearing compat-ro feature flag for FREE_SPACE_TREE (0x1) [ 78.604662][ T4974] BTRFS info (device loop0): clearing compat-ro feature flag for FREE_SPACE_TREE_VALID (0x2) [ 78.609161][ T4974] BTRFS info (device loop0): creating free space tree [ 78.610667][ T4974] BTRFS info (device loop0): setting compat-ro feature flag for FREE_SPACE_TREE (0x1) [ 78.612066][ T4974] BTRFS info (device loop0): setting compat-ro feature flag for FREE_SPACE_TREE_VALID (0x2) [ 78.616422][ T4974] FAULT_INJECTION: forcing a failure. [ 78.616422][ T4974] name fail_page_alloc, interval 1, probability 0, space 0, times 1 [ 78.620536][ T4974] CPU: 1 PID: 4974 Comm: syz.0.17 Not tainted syzkaller #0 [ 78.621764][ T4974] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/18/2026 [ 78.623388][ T4974] Call trace: [ 78.623923][ T4974] dump_backtrace+0x0/0x458 [ 78.624645][ T4974] show_stack+0x2c/0x3c [ 78.625420][ T4974] __dump_stack+0x30/0x40 [ 78.626134][ T4974] dump_stack_lvl+0xf4/0x15c [ 78.626905][ T4974] dump_stack+0x1c/0x5c [ 78.627589][ T4974] should_fail+0x3bc/0x514 [ 78.628335][ T4974] should_fail_alloc_page+0x74/0xa8 [ 78.629155][ T4974] prepare_alloc_pages+0x160/0x45c [ 78.630028][ T4974] __alloc_pages+0x108/0x470 [ 78.630797][ T4974] alloc_pages+0x34c/0x5c0 [ 78.631597][ T4974] new_slab+0xe0/0x544 [ 78.632249][ T4974] ___slab_alloc+0x6b4/0xd8c [ 78.633027][ T4974] __slab_alloc+0x68/0xc0 [ 78.633778][ T4974] kmem_cache_alloc+0x2a4/0x3d4 [ 78.634586][ T4974] btrfs_alloc_path+0x5c/0x68 [ 78.635363][ T4974] btrfs_insert_inode_ref+0xf0/0xa2c [ 78.636265][ T4974] btrfs_add_link+0x248/0xa9c [ 78.637078][ T4974] btrfs_link+0x3a4/0x694 [ 78.637754][ T4974] vfs_link+0x5b4/0x744 [ 78.638429][ T4974] do_linkat+0x258/0x750 [ 78.639116][ T4974] __arm64_sys_linkat+0xe4/0x100 [ 78.639972][ T4974] invoke_syscall+0x98/0x2b0 [ 78.640672][ T4974] el0_svc_common+0x138/0x258 [ 78.641434][ T4974] do_el0_svc+0x58/0x13c [ 78.642161][ T4974] el0_svc+0x78/0x1d0 [ 78.642869][ T4974] el0t_64_sync_handler+0xcc/0xe4 [ 78.643747][ T4974] el0t_64_sync+0x1a0/0x1a4 [ 78.795419][ T4996] loop0: detected capacity change from 0 to 32768 [ 78.835177][ T4996] BTRFS: device fsid ed167579-eb65-4e76-9a50-61ac97e9b59d devid 1 transid 8 /dev/loop0 scanned by syz.0.18 (4996) [ 78.843546][ T4996] BTRFS info (device loop0): using sha256 (sha256-ce) checksum algorithm [ 78.845127][ T4996] BTRFS info (device loop0): metadata ratio 1025 [ 78.846279][ T4996] BTRFS info (device loop0): doing ref verification [ 78.849522][ T4996] BTRFS info (device loop0): force clearing of disk cache [ 78.850776][ T4996] BTRFS info (device loop0): turning off barriers [ 78.851884][ T4996] BTRFS info (device loop0): setting nodatacow, compression disabled [ 78.853303][ T4996] BTRFS info (device loop0): enabling ssd optimizations [ 78.854491][ T4996] BTRFS info (device loop0): using spread ssd allocation scheme [ 78.855733][ T4996] BTRFS info (device loop0): not using ssd optimizations [ 78.860468][ T4996] BTRFS info (device loop0): not using spread ssd allocation scheme [ 78.861834][ T4996] BTRFS info (device loop0): using free space tree [ 78.863000][ T4996] BTRFS info (device loop0): has skinny extents [ 78.871243][ T4996] BTRFS info (device loop0): clearing free space tree [ 78.872388][ T4996] BTRFS info (device loop0): clearing compat-ro feature flag for FREE_SPACE_TREE (0x1) [ 78.874067][ T4996] BTRFS info (device loop0): clearing compat-ro feature flag for FREE_SPACE_TREE_VALID (0x2) [ 78.878513][ T4996] BTRFS info (device loop0): creating free space tree [ 78.880131][ T4996] BTRFS info (device loop0): setting compat-ro feature flag for FREE_SPACE_TREE (0x1) [ 78.881763][ T4996] BTRFS info (device loop0): setting compat-ro feature flag for FREE_SPACE_TREE_VALID (0x2) [ 78.885869][ T4996] FAULT_INJECTION: forcing a failure. [ 78.885869][ T4996] name failslab, interval 1, probability 0, space 0, times 0 [ 78.889856][ T4996] CPU: 1 PID: 4996 Comm: syz.0.18 Not tainted syzkaller #0 [ 78.891049][ T4996] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/18/2026 [ 78.892871][ T4996] Call trace: [ 78.893389][ T4996] dump_backtrace+0x0/0x458 [ 78.894204][ T4996] show_stack+0x2c/0x3c [ 78.894952][ T4996] __dump_stack+0x30/0x40 [ 78.895678][ T4996] dump_stack_lvl+0xf4/0x15c [ 78.896429][ T4996] dump_stack+0x1c/0x5c [ 78.897118][ T4996] should_fail+0x3bc/0x514 [ 78.897870][ T4996] __should_failslab+0xbc/0x10c [ 78.898678][ T4996] should_failslab+0x10/0x28 [ 78.899419][ T4996] slab_pre_alloc_hook+0x64/0xe8 [ 78.900243][ T4996] kmem_cache_alloc+0x94/0x3d4 [ 78.901004][ T4996] btrfs_alloc_path+0x5c/0x68 [ 78.901821][ T4996] btrfs_insert_dir_item+0x184/0x3e8 [ 78.902681][ T4996] btrfs_add_link+0x2b0/0xa9c [ 78.903501][ T4996] btrfs_link+0x3a4/0x694 [ 78.904254][ T4996] vfs_link+0x5b4/0x744 [ 78.904970][ T4996] do_linkat+0x258/0x750 [ 78.905651][ T4996] __arm64_sys_linkat+0xe4/0x100 [ 78.906510][ T4996] invoke_syscall+0x98/0x2b0 [ 78.907285][ T4996] el0_svc_common+0x138/0x258 [ 78.908098][ T4996] do_el0_svc+0x58/0x13c [ 78.908769][ T4996] el0_svc+0x78/0x1d0 [ 78.909405][ T4996] el0t_64_sync_handler+0xcc/0xe4 [ 78.910319][ T4996] el0t_64_sync+0x1a0/0x1a4 [ 78.913401][ T4996] ------------[ cut here ]------------ [ 78.914424][ T4996] WARNING: CPU: 1 PID: 4996 at fs/btrfs/inode.c:6776 btrfs_add_link+0x718/0xa9c [ 78.915918][ T4996] Modules linked in: [ 78.916581][ T4996] CPU: 1 PID: 4996 Comm: syz.0.18 Not tainted syzkaller #0 [ 78.917795][ T4996] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/18/2026 [ 78.919418][ T4996] pstate: 62400005 (nZCv daif +PAN -UAO +TCO -DIT -SSBS BTYPE=--) [ 78.920711][ T4996] pc : btrfs_add_link+0x718/0xa9c [ 78.921515][ T4996] lr : btrfs_add_link+0x718/0xa9c [ 78.922429][ T4996] sp : ffff80001ff079e0 [ 78.923177][ T4996] x29: ffff80001ff07ae0 x28: ffff0000de1e68f0 x27: 0000000000000107 [ 78.924536][ T4996] x26: 00000000fffffff4 x25: 0000000000000001 x24: dfff800000000000 [ 78.925979][ T4996] x23: 0000000000000005 x22: 1fffe0001bc3cd29 x21: ffff700003fe0f44 [ 78.927302][ T4996] x20: 00000000fffffff4 x19: ffff0000de1e6948 x18: 0000000000000001 [ 78.928732][ T4996] x17: 0000000000000000 x16: ffff80001125f77c x15: 00000000ffffffff [ 78.930066][ T4996] x14: 0000000000000001 x13: 1fffe000341f47ab x12: 0000000000ff0100 [ 78.931375][ T4996] x11: 0000000000000000 x10: 0000000000000000 x9 : 14d9a0c67ba91a00 [ 78.932754][ T4996] x8 : 14d9a0c67ba91a00 x7 : 0000000000000001 x6 : 0000000000000001 [ 78.934088][ T4996] x5 : ffff80001ff072f8 x4 : ffff80001437f3e0 x3 : ffff80000850932c [ 78.935417][ T4996] x2 : 0000000000000001 x1 : 0000000100000000 x0 : 0000000000000026 [ 78.936698][ T4996] Call trace: [ 78.937257][ T4996] btrfs_add_link+0x718/0xa9c [ 78.938016][ T4996] btrfs_link+0x3a4/0x694 [ 78.938723][ T4996] vfs_link+0x5b4/0x744 [ 78.939367][ T4996] do_linkat+0x258/0x750 [ 78.940093][ T4996] __arm64_sys_linkat+0xe4/0x100 [ 78.940910][ T4996] invoke_syscall+0x98/0x2b0 [ 78.941718][ T4996] el0_svc_common+0x138/0x258 [ 78.942496][ T4996] do_el0_svc+0x58/0x13c [ 78.943197][ T4996] el0_svc+0x78/0x1d0 [ 78.943888][ T4996] el0t_64_sync_handler+0xcc/0xe4 [ 78.944712][ T4996] el0t_64_sync+0x1a0/0x1a4 [ 78.945420][ T4996] irq event stamp: 81008 [ 78.946115][ T4996] hardirqs last enabled at (81007): [] __up_console_sem+0xb4/0xfc [ 78.947784][ T4996] hardirqs last disabled at (81008): [] el1_dbg+0x24/0x80 [ 78.949289][ T4996] softirqs last enabled at (80988): [] handle_softirqs+0xa40/0xbe4 [ 78.950915][ T4996] softirqs last disabled at (80953): [] __irq_exit_rcu+0x240/0x43c [ 78.952546][ T4996] ---[ end trace 4bff21fd228f5f16 ]--- [ 78.956282][ T4996] BTRFS: error (device loop0) in btrfs_add_link:6776: errno=-12 Out of memory [ 78.957892][ T4996] BTRFS info (device loop0): forced readonly [ 79.133874][ T5018] loop0: detected capacity change from 0 to 32768 [ 79.172291][ T5018] BTRFS: device fsid ed167579-eb65-4e76-9a50-61ac97e9b59d devid 1 transid 8 /dev/loop0 scanned by syz.0.19 (5018) [ 79.176432][ T5018] BTRFS info (device loop0): using sha256 (sha256-ce) checksum algorithm [ 79.178250][ T5018] BTRFS info (device loop0): metadata ratio 1025 [ 79.179391][ T5018] BTRFS info (device loop0): doing ref verification [ 79.180541][ T5018] BTRFS info (device loop0): force clearing of disk cache [ 79.181860][ T5018] BTRFS info (device loop0): turning off barriers [ 79.183069][ T5018] BTRFS info (device loop0): setting nodatacow, compression disabled [ 79.184379][ T5018] BTRFS info (device loop0): enabling ssd optimizations [ 79.185452][ T5018] BTRFS info (device loop0): using spread ssd allocation scheme [ 79.186859][ T5018] BTRFS info (device loop0): not using ssd optimizations [ 79.188975][ T5018] BTRFS info (device loop0): not using spread ssd allocation scheme [ 79.190384][ T5018] BTRFS info (device loop0): using free space tree [ 79.191464][ T5018] BTRFS info (device loop0): has skinny extents [ 79.200090][ T5018] BTRFS info (device loop0): clearing free space tree [ 79.201271][ T5018] BTRFS info (device loop0): clearing compat-ro feature flag for FREE_SPACE_TREE (0x1) [ 79.202975][ T5018] BTRFS info (device loop0): clearing compat-ro feature flag for FREE_SPACE_TREE_VALID (0x2) [ 79.206351][ T5018] BTRFS info (device loop0): creating free space tree [ 79.208234][ T5018] BTRFS info (device loop0): setting compat-ro feature flag for FREE_SPACE_TREE (0x1) [ 79.209920][ T5018] BTRFS info (device loop0): setting compat-ro feature flag for FREE_SPACE_TREE_VALID (0x2) [ 79.214371][ T5018] FAULT_INJECTION: forcing a failure. [ 79.214371][ T5018] name failslab, interval 1, probability 0, space 0, times 0 [ 79.216568][ T5018] CPU: 1 PID: 5018 Comm: syz.0.19 Tainted: G W syzkaller #0 [ 79.218120][ T5018] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/18/2026 [ 79.219877][ T5018] Call trace: [ 79.220425][ T5018] dump_backtrace+0x0/0x458 [ 79.221208][ T5018] show_stack+0x2c/0x3c [ 79.221894][ T5018] __dump_stack+0x30/0x40 [ 79.222622][ T5018] dump_stack_lvl+0xf4/0x15c [ 79.223397][ T5018] dump_stack+0x1c/0x5c [ 79.224106][ T5018] should_fail+0x3bc/0x514 [ 79.224899][ T5018] __should_failslab+0xbc/0x10c [ 79.225705][ T5018] should_failslab+0x10/0x28 [ 79.226461][ T5018] slab_pre_alloc_hook+0x64/0xe8 [ 79.227307][ T5018] kmem_cache_alloc+0x94/0x3d4 [ 79.228086][ T5018] btrfs_alloc_path+0x5c/0x68 [ 79.228874][ T5018] btrfs_insert_inode_ref+0xf0/0xa2c [ 79.229725][ T5018] btrfs_add_link+0x248/0xa9c [ 79.230418][ T5018] btrfs_link+0x3a4/0x694 [ 79.231110][ T5018] vfs_link+0x5b4/0x744 [ 79.231738][ T5018] do_linkat+0x258/0x750 [ 79.232383][ T5018] __arm64_sys_linkat+0xe4/0x100 [ 79.233223][ T5018] invoke_syscall+0x98/0x2b0 [ 79.233998][ T5018] el0_svc_common+0x138/0x258 [ 79.234768][ T5018] do_el0_svc+0x58/0x13c [ 79.235504][ T5018] el0_svc+0x78/0x1d0 [ 79.236142][ T5018] el0t_64_sync_handler+0xcc/0xe4 [ 79.237012][ T5018] el0t_64_sync+0x1a0/0x1a4 [ 79.393994][ T5040] loop0: detected capacity change from 0 to 32768 [ 79.496955][ T5040] BTRFS: device fsid ed167579-eb65-4e76-9a50-61ac97e9b59d devid 1 transid 8 /dev/loop0 scanned by syz.0.20 (5040) [ 79.502623][ T5040] BTRFS info (device loop0): using sha256 (sha256-ce) checksum algorithm [ 79.504045][ T5040] BTRFS info (device loop0): metadata ratio 1025 [ 79.505091][ T5040] BTRFS info (device loop0): doing ref verification [ 79.506118][ T5040] BTRFS info (device loop0): force clearing of disk cache [ 79.507505][ T5040] BTRFS info (device loop0): turning off barriers [ 79.508486][ T5040] BTRFS info (device loop0): setting nodatacow, compression disabled [ 79.510381][ T5040] BTRFS info (device loop0): enabling ssd optimizations [ 79.511529][ T5040] BTRFS info (device loop0): using spread ssd allocation scheme [ 79.512781][ T5040] BTRFS info (device loop0): not using ssd optimizations [ 79.513925][ T5040] BTRFS info (device loop0): not using spread ssd allocation scheme [ 79.517971][ T5040] BTRFS info (device loop0): using free space tree [ 79.519028][ T5040] BTRFS info (device loop0): has skinny extents [ 79.538173][ T5040] BTRFS info (device loop0): clearing free space tree [ 79.539333][ T5040] BTRFS info (device loop0): clearing compat-ro feature flag for FREE_SPACE_TREE (0x1) [ 79.541050][ T5040] BTRFS info (device loop0): clearing compat-ro feature flag for FREE_SPACE_TREE_VALID (0x2) [ 79.544915][ T5040] BTRFS info (device loop0): creating free space tree [ 79.546376][ T5040] BTRFS info (device loop0): setting compat-ro feature flag for FREE_SPACE_TREE (0x1) [ 79.548422][ T5040] BTRFS info (device loop0): setting compat-ro feature flag for FREE_SPACE_TREE_VALID (0x2) [ 79.553426][ T5040] FAULT_INJECTION: forcing a failure. [ 79.553426][ T5040] name failslab, interval 1, probability 0, space 0, times 0 [ 79.555370][ T5040] CPU: 1 PID: 5040 Comm: syz.0.20 Tainted: G W syzkaller #0 [ 79.556738][ T5040] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/18/2026 [ 79.558540][ T5040] Call trace: [ 79.559064][ T5040] dump_backtrace+0x0/0x458 [ 79.559787][ T5040] show_stack+0x2c/0x3c [ 79.560494][ T5040] __dump_stack+0x30/0x40 [ 79.561222][ T5040] dump_stack_lvl+0xf4/0x15c [ 79.561994][ T5040] dump_stack+0x1c/0x5c [ 79.562678][ T5040] should_fail+0x3bc/0x514 [ 79.563406][ T5040] __should_failslab+0xbc/0x10c [ 79.564162][ T5040] should_failslab+0x10/0x28 [ 79.564901][ T5040] slab_pre_alloc_hook+0x64/0xe8 [ 79.565806][ T5040] kmem_cache_alloc+0x94/0x3d4 [ 79.566607][ T5040] btrfs_alloc_path+0x5c/0x68 [ 79.567454][ T5040] btrfs_insert_dir_item+0x184/0x3e8 [ 79.568257][ T5040] btrfs_add_link+0x2b0/0xa9c [ 79.569009][ T5040] btrfs_link+0x3a4/0x694 [ 79.569765][ T5040] vfs_link+0x5b4/0x744 [ 79.570421][ T5040] do_linkat+0x258/0x750 [ 79.571087][ T5040] __arm64_sys_linkat+0xe4/0x100 [ 79.571917][ T5040] invoke_syscall+0x98/0x2b0 [ 79.572618][ T5040] el0_svc_common+0x138/0x258 [ 79.573446][ T5040] do_el0_svc+0x58/0x13c [ 79.574224][ T5040] el0_svc+0x78/0x1d0 [ 79.574991][ T5040] el0t_64_sync_handler+0xcc/0xe4 [ 79.575866][ T5040] el0t_64_sync+0x1a0/0x1a4 [ 79.578557][ T5040] ------------[ cut here ]------------ [ 79.579616][ T5040] WARNING: CPU: 1 PID: 5040 at fs/btrfs/inode.c:6776 btrfs_add_link+0x718/0xa9c [ 79.581050][ T5040] Modules linked in: [ 79.581620][ T5040] CPU: 1 PID: 5040 Comm: syz.0.20 Tainted: G W syzkaller #0 [ 79.583034][ T5040] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/18/2026 [ 79.584781][ T5040] pstate: 62400005 (nZCv daif +PAN -UAO +TCO -DIT -SSBS BTYPE=--) [ 79.586003][ T5040] pc : btrfs_add_link+0x718/0xa9c [ 79.586881][ T5040] lr : btrfs_add_link+0x718/0xa9c [ 79.587741][ T5040] sp : ffff8000202779e0 [ 79.588483][ T5040] x29: ffff800020277ae0 x28: ffff0000de1e6e70 x27: 0000000000000107 [ 79.589928][ T5040] x26: 00000000fffffff4 x25: 0000000000000001 x24: dfff800000000000 [ 79.591325][ T5040] x23: 0000000000000005 x22: 1fffe0001bc3cdd9 x21: ffff70000404ef44 [ 79.592731][ T5040] x20: 00000000fffffff4 x19: ffff0000de1e6ec8 x18: 0000000000000001 [ 79.594095][ T5040] x17: 0000000000000000 x16: ffff80001125f77c x15: 00000000ffffffff [ 79.595413][ T5040] x14: 0000000000000001 x13: 1fffe000341f47ab x12: 0000000000ff0100 [ 79.596701][ T5040] x11: 0000000000000000 x10: 0000000000000000 x9 : 4d08f08306a84400 [ 79.598037][ T5040] x8 : 4d08f08306a84400 x7 : 0000000000000001 x6 : 0000000000000001 [ 79.599435][ T5040] x5 : ffff8000202772f8 x4 : ffff80001437f3e0 x3 : ffff80000850932c [ 79.600856][ T5040] x2 : 0000000000000001 x1 : 0000000100000000 x0 : 0000000000000026 [ 79.602197][ T5040] Call trace: [ 79.602774][ T5040] btrfs_add_link+0x718/0xa9c [ 79.603562][ T5040] btrfs_link+0x3a4/0x694 [ 79.604345][ T5040] vfs_link+0x5b4/0x744 [ 79.605050][ T5040] do_linkat+0x258/0x750 [ 79.605746][ T5040] __arm64_sys_linkat+0xe4/0x100 [ 79.606570][ T5040] invoke_syscall+0x98/0x2b0 [ 79.607356][ T5040] el0_svc_common+0x138/0x258 [ 79.608203][ T5040] do_el0_svc+0x58/0x13c [ 79.608937][ T5040] el0_svc+0x78/0x1d0 [ 79.609610][ T5040] el0t_64_sync_handler+0xcc/0xe4 [ 79.610425][ T5040] el0t_64_sync+0x1a0/0x1a4 [ 79.611115][ T5040] irq event stamp: 81380 [ 79.611795][ T5040] hardirqs last enabled at (81379): [] __up_console_sem+0xb4/0xfc [ 79.613504][ T5040] hardirqs last disabled at (81380): [] el1_dbg+0x24/0x80 [ 79.614997][ T5040] softirqs last enabled at (81360): [] handle_softirqs+0xa40/0xbe4 [ 79.616635][ T5040] softirqs last disabled at (81315): [] __irq_exit_rcu+0x240/0x43c [ 79.618335][ T5040] ---[ end trace 4bff21fd228f5f17 ]--- [ 79.620950][ T5040] BTRFS: error (device loop0) in btrfs_add_link:6776: errno=-12 Out of memory [ 79.622693][ T5040] BTRFS info (device loop0): forced readonly [ 79.742273][ T1620] device hsr_slave_0 left promiscuous mode [ 79.757357][ T1620] device hsr_slave_1 left promiscuous mode [ 79.812877][ T5063] loop0: detected capacity change from 0 to 32768 [ 79.848114][ T5063] BTRFS: device fsid ed167579-eb65-4e76-9a50-61ac97e9b59d devid 1 transid 8 /dev/loop0 scanned by syz.0.21 (5063) [ 79.867032][ T1620] batman_adv: batadv0: Interface deactivated: batadv_slave_0 [ 79.868422][ T1620] batman_adv: batadv0: Removing interface: batadv_slave_0 [ 79.869935][ T1620] batman_adv: batadv0: Interface deactivated: batadv_slave_1 [ 79.871191][ T1620] batman_adv: batadv0: Removing interface: batadv_slave_1 [ 79.872580][ T1620] device bridge_slave_1 left promiscuous mode [ 79.873666][ T1620] bridge0: port 2(bridge_slave_1) entered disabled state [ 79.889116][ T1620] device bridge_slave_0 left promiscuous mode [ 79.890268][ T1620] bridge0: port 1(bridge_slave_0) entered disabled state [ 79.894875][ T5063] BTRFS info (device loop0): using sha256 (sha256-ce) checksum algorithm [ 79.896364][ T5063] BTRFS info (device loop0): metadata ratio 1025 [ 79.897872][ T5063] BTRFS info (device loop0): doing ref verification [ 79.899034][ T5063] BTRFS info (device loop0): force clearing of disk cache [ 79.900107][ T5063] BTRFS info (device loop0): turning off barriers [ 79.901202][ T5063] BTRFS info (device loop0): setting nodatacow, compression disabled [ 79.902544][ T5063] BTRFS info (device loop0): enabling ssd optimizations [ 79.903798][ T5063] BTRFS info (device loop0): using spread ssd allocation scheme [ 79.918133][ T5063] FAULT_INJECTION: forcing a failure. [ 79.918133][ T5063] name failslab, interval 1, probability 0, space 0, times 0 [ 79.920501][ T5063] CPU: 0 PID: 5063 Comm: syz.0.21 Tainted: G W syzkaller #0 [ 79.921998][ T5063] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/18/2026 [ 79.923746][ T5063] Call trace: [ 79.924272][ T5063] dump_backtrace+0x0/0x458 [ 79.925042][ T5063] show_stack+0x2c/0x3c [ 79.925700][ T5063] __dump_stack+0x30/0x40 [ 79.926373][ T5063] dump_stack_lvl+0xf4/0x15c [ 79.927148][ T5063] dump_stack+0x1c/0x5c [ 79.927806][ T5063] should_fail+0x3bc/0x514 [ 79.928558][ T5063] __should_failslab+0xbc/0x10c [ 79.929378][ T5063] should_failslab+0x10/0x28 [ 79.930167][ T5063] slab_pre_alloc_hook+0x64/0xe8 [ 79.931003][ T5063] kmem_cache_alloc+0x94/0x3d4 [ 79.931850][ T5063] btrfs_alloc_path+0x5c/0x68 [ 79.932676][ T5063] btrfs_insert_dir_item+0x184/0x3e8 [ 79.933605][ T5063] btrfs_add_link+0x2b0/0xa9c [ 79.934411][ T5063] btrfs_link+0x3a4/0x694 [ 79.935088][ T5063] vfs_link+0x5b4/0x744 [ 79.935802][ T5063] do_linkat+0x258/0x750 [ 79.936503][ T5063] __arm64_sys_linkat+0xe4/0x100 [ 79.937308][ T5063] invoke_syscall+0x98/0x2b0 [ 79.938066][ T5063] el0_svc_common+0x138/0x258 [ 79.938823][ T5063] do_el0_svc+0x58/0x13c [ 79.939529][ T5063] el0_svc+0x78/0x1d0 [ 79.940154][ T5063] el0t_64_sync_handler+0xcc/0xe4 [ 79.941026][ T5063] el0t_64_sync+0x1a0/0x1a4 [ 79.943186][ T5063] ------------[ cut here ]------------ [ 79.944099][ T5063] WARNING: CPU: 0 PID: 5063 at fs/btrfs/inode.c:6776 btrfs_add_link+0x718/0xa9c [ 79.945626][ T5063] Modules linked in: [ 79.946259][ T5063] CPU: 0 PID: 5063 Comm: syz.0.21 Tainted: G W syzkaller #0 [ 79.947706][ T5063] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/18/2026 [ 79.949417][ T5063] pstate: 62400005 (nZCv daif +PAN -UAO +TCO -DIT -SSBS BTYPE=--) [ 79.950829][ T5063] pc : btrfs_add_link+0x718/0xa9c [ 79.951716][ T5063] lr : btrfs_add_link+0x718/0xa9c [ 79.952557][ T5063] sp : ffff8000202079e0 [ 79.953304][ T5063] x29: ffff800020207ae0 x28: ffff0000de1394d0 x27: 0000000000000107 [ 79.954632][ T5063] x26: 00000000fffffff4 x25: 0000000000000001 x24: dfff800000000000 [ 79.956054][ T5063] x23: 0000000000000005 x22: 1fffe0001bc272a5 x21: ffff700004040f44 [ 79.957321][ T5063] x20: 00000000fffffff4 x19: ffff0000de139528 x18: 0000000000000001 [ 79.958722][ T5063] x17: 0000000000000000 x16: ffff800008304c04 x15: 00000000ffffffff [ 79.960190][ T5063] x14: 0000000000000001 x13: 1ffff00004040e5c x12: 0000000000ff0100 [ 79.961544][ T5063] x11: 0000000000000000 x10: 0000000000000000 x9 : a35191fe21f44c00 [ 79.962897][ T5063] x8 : a35191fe21f44c00 x7 : 0000000000000001 x6 : 0000000000000001 [ 79.964259][ T5063] x5 : ffff8000202072f8 x4 : ffff80001437f3e0 x3 : ffff800008304d14 [ 79.965565][ T5063] x2 : 0000000000000001 x1 : 0000000100000000 x0 : 0000000000000026 [ 79.966865][ T5063] Call trace: [ 79.967433][ T5063] btrfs_add_link+0x718/0xa9c [ 79.968201][ T5063] btrfs_link+0x3a4/0x694 [ 79.968886][ T5063] vfs_link+0x5b4/0x744 [ 79.969598][ T5063] do_linkat+0x258/0x750 [ 79.970313][ T5063] __arm64_sys_linkat+0xe4/0x100 [ 79.971191][ T5063] invoke_syscall+0x98/0x2b0 [ 79.972009][ T5063] el0_svc_common+0x138/0x258 [ 79.972775][ T5063] do_el0_svc+0x58/0x13c [ 79.973500][ T5063] el0_svc+0x78/0x1d0 [ 79.974159][ T5063] el0t_64_sync_handler+0xcc/0xe4 [ 79.975019][ T5063] el0t_64_sync+0x1a0/0x1a4 [ 79.975704][ T5063] irq event stamp: 80286 [ 79.976352][ T5063] hardirqs last enabled at (80285): [] __up_console_sem+0xb4/0xfc [ 79.977944][ T5063] hardirqs last disabled at (80286): [] el1_dbg+0x24/0x80 [ 79.979362][ T5063] softirqs last enabled at (80266): [] handle_softirqs+0xa40/0xbe4 [ 79.981012][ T5063] softirqs last disabled at (80223): [] __irq_exit_rcu+0x240/0x43c [ 79.982552][ T5063] ---[ end trace 4bff21fd228f5f18 ]--- [ 79.984071][ T5063] BTRFS: error (device loop0) in btrfs_add_link:6776: errno=-12 Out of memory [ 80.037067][ T1620] device veth1_macvtap left promiscuous mode [ 80.038249][ T1620] device veth0_macvtap left promiscuous mode [ 80.039250][ T1620] device veth1_vlan left promiscuous mode [ 80.040258][ T1620] device veth0_vlan left promiscuous mode [ 80.148558][ T1620] team0 (unregistering): Port device team_slave_1 removed [ 80.153010][ T1620] team0 (unregistering): Port device team_slave_0 removed [ 80.158223][ T1620] bond0 (unregistering): (slave bond_slave_1): Releasing backup interface [ 80.179197][ T5085] loop0: detected capacity change from 0 to 32768 [ 80.185816][ T5085] BTRFS: device fsid ed167579-eb65-4e76-9a50-61ac97e9b59d devid 1 transid 8 /dev/loop0 scanned by syz.0.22 (5085) [ 80.203599][ T5085] FAULT_INJECTION: forcing a failure. [ 80.203599][ T5085] name failslab, interval 1, probability 0, space 0, times 0 [ 80.205682][ T5085] CPU: 1 PID: 5085 Comm: syz.0.22 Tainted: G W syzkaller #0 [ 80.205814][ T1620] bond0 (unregistering): (slave bond_slave_0): Releasing backup interface [ 80.207189][ T5085] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/18/2026 [ 80.207217][ T5085] Call trace: [ 80.207221][ T5085] dump_backtrace+0x0/0x458 [ 80.207233][ T5085] show_stack+0x2c/0x3c [ 80.207239][ T5085] __dump_stack+0x30/0x40 [ 80.207249][ T5085] dump_stack_lvl+0xf4/0x15c [ 80.207254][ T5085] dump_stack+0x1c/0x5c [ 80.207259][ T5085] should_fail+0x3bc/0x514 [ 80.207264][ T5085] __should_failslab+0xbc/0x10c [ 80.207271][ T5085] should_failslab+0x10/0x28 [ 80.207277][ T5085] slab_pre_alloc_hook+0x64/0xe8 [ 80.207282][ T5085] kmem_cache_alloc+0x94/0x3d4 [ 80.207287][ T5085] btrfs_alloc_path+0x5c/0x68 [ 80.207293][ T5085] btrfs_insert_inode_ref+0xf0/0xa2c [ 80.207299][ T5085] btrfs_add_link+0x248/0xa9c [ 80.207304][ T5085] btrfs_link+0x3a4/0x694 [ 80.207309][ T5085] vfs_link+0x5b4/0x744 [ 80.222417][ T5085] do_linkat+0x258/0x750 [ 80.223148][ T5085] __arm64_sys_linkat+0xe4/0x100 [ 80.224007][ T5085] invoke_syscall+0x98/0x2b0 [ 80.224801][ T5085] el0_svc_common+0x138/0x258 [ 80.225544][ T5085] do_el0_svc+0x58/0x13c [ 80.226261][ T5085] el0_svc+0x78/0x1d0 [ 80.226936][ T5085] el0t_64_sync_handler+0xcc/0xe4 [ 80.227834][ T5085] el0t_64_sync+0x1a0/0x1a4 [ 80.344217][ T1620] bond0 (unregistering): Released all slaves [ 80.347063][ T4173] Bluetooth: hci0: command 0x0419 tx timeout [ 80.383246][ T5106] loop0: detected capacity change from 0 to 32768 [ 80.460356][ T5106] BTRFS: device fsid ed167579-eb65-4e76-9a50-61ac97e9b59d devid 1 transid 8 /dev/loop0 scanned by syz.0.23 (5106) [ 80.479934][ T5106] FAULT_INJECTION: forcing a failure. [ 80.479934][ T5106] name failslab, interval 1, probability 0, space 0, times 0 [ 80.482078][ T5106] CPU: 0 PID: 5106 Comm: syz.0.23 Tainted: G W syzkaller #0 [ 80.483477][ T5106] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/18/2026 [ 80.485174][ T5106] Call trace: [ 80.485760][ T5106] dump_backtrace+0x0/0x458 [ 80.486499][ T5106] show_stack+0x2c/0x3c [ 80.487262][ T5106] __dump_stack+0x30/0x40 [ 80.488050][ T5106] dump_stack_lvl+0xf4/0x15c [ 80.488804][ T5106] dump_stack+0x1c/0x5c [ 80.489469][ T5106] should_fail+0x3bc/0x514 [ 80.490166][ T5106] __should_failslab+0xbc/0x10c [ 80.490988][ T5106] should_failslab+0x10/0x28 [ 80.491764][ T5106] slab_pre_alloc_hook+0x64/0xe8 [ 80.492550][ T5106] kmem_cache_alloc+0x94/0x3d4 [ 80.493330][ T5106] btrfs_alloc_path+0x5c/0x68 [ 80.494088][ T5106] btrfs_insert_dir_item+0x184/0x3e8 [ 80.494982][ T5106] btrfs_add_link+0x2b0/0xa9c [ 80.495784][ T5106] btrfs_link+0x3a4/0x694 [ 80.496516][ T5106] vfs_link+0x5b4/0x744 [ 80.497215][ T5106] do_linkat+0x258/0x750 [ 80.497934][ T5106] __arm64_sys_linkat+0xe4/0x100 [ 80.498759][ T5106] invoke_syscall+0x98/0x2b0 [ 80.499531][ T5106] el0_svc_common+0x138/0x258 [ 80.500337][ T5106] do_el0_svc+0x58/0x13c [ 80.501026][ T5106] el0_svc+0x78/0x1d0 [ 80.501667][ T5106] el0t_64_sync_handler+0xcc/0xe4 [ 80.502505][ T5106] el0t_64_sync+0x1a0/0x1a4 [ 80.504724][ T5106] ------------[ cut here ]------------ [ 80.505712][ T5106] WARNING: CPU: 0 PID: 5106 at fs/btrfs/inode.c:6776 btrfs_add_link+0x718/0xa9c [ 80.507322][ T5106] Modules linked in: [ 80.508015][ T5106] CPU: 0 PID: 5106 Comm: syz.0.23 Tainted: G W syzkaller #0 [ 80.509443][ T5106] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/18/2026 [ 80.511136][ T5106] pstate: 62400005 (nZCv daif +PAN -UAO +TCO -DIT -SSBS BTYPE=--) [ 80.512476][ T5106] pc : btrfs_add_link+0x718/0xa9c [ 80.513328][ T5106] lr : btrfs_add_link+0x718/0xa9c [ 80.514152][ T5106] sp : ffff8000202779e0 [ 80.514807][ T5106] x29: ffff800020277ae0 x28: ffff0000de139840 x27: 0000000000000107 [ 80.516174][ T5106] x26: 00000000fffffff4 x25: 0000000000000001 x24: dfff800000000000 [ 80.517525][ T5106] x23: 0000000000000005 x22: 1fffe0001bc27313 x21: ffff70000404ef44 [ 80.518887][ T5106] x20: 00000000fffffff4 x19: ffff0000de139898 x18: 0000000000000001 [ 80.520236][ T5106] x17: 0000000000000000 x16: ffff80001125f77c x15: 00000000ffffffff [ 80.521553][ T5106] x14: 0000000000000001 x13: 1fffe000341f05ab x12: 0000000000ff0100 [ 80.522809][ T5106] x11: 0000000000000000 x10: 0000000000000000 x9 : b013b12499202100 [ 80.524192][ T5106] x8 : b013b12499202100 x7 : 0000000000000001 x6 : 0000000000000001 [ 80.525589][ T5106] x5 : ffff8000202772f8 x4 : ffff80001437f3e0 x3 : ffff80000850932c [ 80.526925][ T5106] x2 : 0000000000000001 x1 : 0000000100000000 x0 : 0000000000000026 [ 80.528203][ T5106] Call trace: [ 80.528738][ T5106] btrfs_add_link+0x718/0xa9c [ 80.529500][ T5106] btrfs_link+0x3a4/0x694 [ 80.530208][ T5106] vfs_link+0x5b4/0x744 [ 80.530888][ T5106] do_linkat+0x258/0x750 [ 80.531639][ T5106] __arm64_sys_linkat+0xe4/0x100 [ 80.532446][ T5106] invoke_syscall+0x98/0x2b0 [ 80.533208][ T5106] el0_svc_common+0x138/0x258 [ 80.533989][ T5106] do_el0_svc+0x58/0x13c [ 80.534757][ T5106] el0_svc+0x78/0x1d0 [ 80.535362][ T5106] el0t_64_sync_handler+0xcc/0xe4 [ 80.536132][ T5106] el0t_64_sync+0x1a0/0x1a4 [ 80.536898][ T5106] irq event stamp: 80140 [ 80.537569][ T5106] hardirqs last enabled at (80139): [] __up_console_sem+0xb4/0xfc [ 80.539123][ T5106] hardirqs last disabled at (80140): [] el1_dbg+0x24/0x80 [ 80.540539][ T5106] softirqs last enabled at (80120): [] handle_softirqs+0xa40/0xbe4 [ 80.542157][ T5106] softirqs last disabled at (80071): [] __irq_exit_rcu+0x240/0x43c [ 80.543743][ T5106] ---[ end trace 4bff21fd228f5f19 ]--- [ 80.548507][ T5106] BTRFS: error (device loop0) in btrfs_add_link:6776: errno=-12 Out of memory [ 80.688565][ T5128] loop0: detected capacity change from 0 to 32768 [ 80.784724][ T5128] BTRFS: device fsid ed167579-eb65-4e76-9a50-61ac97e9b59d devid 1 transid 8 /dev/loop0 scanned by syz.0.24 (5128) [ 80.805613][ T5128] FAULT_INJECTION: forcing a failure. [ 80.805613][ T5128] name fail_page_alloc, interval 1, probability 0, space 0, times 0 [ 80.808048][ T5128] CPU: 1 PID: 5128 Comm: syz.0.24 Tainted: G W syzkaller #0 [ 80.809417][ T5128] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/18/2026 [ 80.811003][ T5128] Call trace: [ 80.811492][ T5128] dump_backtrace+0x0/0x458 [ 80.812200][ T5128] show_stack+0x2c/0x3c [ 80.812855][ T5128] __dump_stack+0x30/0x40 [ 80.813524][ T5128] dump_stack_lvl+0xf4/0x15c [ 80.814271][ T5128] dump_stack+0x1c/0x5c [ 80.814982][ T5128] should_fail+0x3bc/0x514 [ 80.815695][ T5128] should_fail_alloc_page+0x74/0xa8 [ 80.816573][ T5128] prepare_alloc_pages+0x160/0x45c [ 80.817472][ T5128] __alloc_pages+0x108/0x470 [ 80.818193][ T5128] alloc_pages+0x34c/0x5c0 [ 80.818915][ T5128] new_slab+0xe0/0x544 [ 80.819599][ T5128] ___slab_alloc+0x6b4/0xd8c [ 80.820385][ T5128] __slab_alloc+0x68/0xc0 [ 80.821134][ T5128] kmem_cache_alloc+0x2a4/0x3d4 [ 80.821987][ T5128] btrfs_alloc_path+0x5c/0x68 [ 80.822800][ T5128] btrfs_insert_inode_ref+0xf0/0xa2c [ 80.823695][ T5128] btrfs_add_link+0x248/0xa9c [ 80.824436][ T5128] btrfs_link+0x3a4/0x694 [ 80.825118][ T5128] vfs_link+0x5b4/0x744 [ 80.825864][ T5128] do_linkat+0x258/0x750 [ 80.826549][ T5128] __arm64_sys_linkat+0xe4/0x100 [ 80.827390][ T5128] invoke_syscall+0x98/0x2b0 [ 80.828147][ T5128] el0_svc_common+0x138/0x258 [ 80.828907][ T5128] do_el0_svc+0x58/0x13c [ 80.829604][ T5128] el0_svc+0x78/0x1d0 [ 80.830295][ T5128] el0t_64_sync_handler+0xcc/0xe4 [ 80.831124][ T5128] el0t_64_sync+0x1a0/0x1a4 [ 80.978305][ T5150] loop0: detected capacity change from 0 to 32768 [ 80.982394][ T5150] BTRFS: device fsid ed167579-eb65-4e76-9a50-61ac97e9b59d devid 1 transid 8 /dev/loop0 scanned by syz.0.25 (5150) [ 80.999081][ T5150] FAULT_INJECTION: forcing a failure. [ 80.999081][ T5150] name failslab, interval 1, probability 0, space 0, times 0 [ 81.001284][ T5150] CPU: 1 PID: 5150 Comm: syz.0.25 Tainted: G W syzkaller #0 [ 81.002751][ T5150] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/18/2026 [ 81.004511][ T5150] Call trace: [ 81.005072][ T5150] dump_backtrace+0x0/0x458 [ 81.005873][ T5150] show_stack+0x2c/0x3c [ 81.006581][ T5150] __dump_stack+0x30/0x40 [ 81.007300][ T5150] dump_stack_lvl+0xf4/0x15c [ 81.008096][ T5150] dump_stack+0x1c/0x5c [ 81.008805][ T5150] should_fail+0x3bc/0x514 [ 81.009513][ T5150] __should_failslab+0xbc/0x10c [ 81.010327][ T5150] should_failslab+0x10/0x28 [ 81.011068][ T5150] slab_pre_alloc_hook+0x64/0xe8 [ 81.011899][ T5150] kmem_cache_alloc+0x94/0x3d4 [ 81.012712][ T5150] btrfs_alloc_path+0x5c/0x68 [ 81.013523][ T5150] btrfs_insert_inode_ref+0xf0/0xa2c [ 81.014451][ T5150] btrfs_add_link+0x248/0xa9c [ 81.015231][ T5150] btrfs_link+0x3a4/0x694 [ 81.015975][ T5150] vfs_link+0x5b4/0x744 [ 81.016680][ T5150] do_linkat+0x258/0x750 [ 81.017362][ T5150] __arm64_sys_linkat+0xe4/0x100 [ 81.018102][ T5150] invoke_syscall+0x98/0x2b0 [ 81.018860][ T5150] el0_svc_common+0x138/0x258 [ 81.019615][ T5150] do_el0_svc+0x58/0x13c [ 81.020323][ T5150] el0_svc+0x78/0x1d0 [ 81.021017][ T5150] el0t_64_sync_handler+0xcc/0xe4 [ 81.021885][ T5150] el0t_64_sync+0x1a0/0x1a4 [ 81.272063][ T5171] BTRFS: device fsid ed167579-eb65-4e76-9a50-61ac97e9b59d devid 1 transid 8 /dev/loop0 scanned by syz.0.26 (5171) [ 81.289850][ T5171] FAULT_INJECTION: forcing a failure. [ 81.289850][ T5171] name failslab, interval 1, probability 0, space 0, times 0 [ 81.291908][ T5171] CPU: 1 PID: 5171 Comm: syz.0.26 Tainted: G W syzkaller #0 [ 81.293390][ T5171] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/18/2026 [ 81.295114][ T5171] Call trace: [ 81.295732][ T5171] dump_backtrace+0x0/0x458 [ 81.296460][ T5171] show_stack+0x2c/0x3c [ 81.297145][ T5171] __dump_stack+0x30/0x40 [ 81.297922][ T5171] dump_stack_lvl+0xf4/0x15c [ 81.298705][ T5171] dump_stack+0x1c/0x5c [ 81.299466][ T5171] should_fail+0x3bc/0x514 [ 81.300246][ T5171] __should_failslab+0xbc/0x10c [ 81.301084][ T5171] should_failslab+0x10/0x28 [ 81.301881][ T5171] slab_pre_alloc_hook+0x64/0xe8 [ 81.302720][ T5171] kmem_cache_alloc+0x94/0x3d4 [ 81.303501][ T5171] btrfs_alloc_path+0x5c/0x68 [ 81.304327][ T5171] btrfs_insert_dir_item+0x184/0x3e8 [ 81.305183][ T5171] btrfs_add_link+0x2b0/0xa9c [ 81.305954][ T5171] btrfs_link+0x3a4/0x694 [ 81.306740][ T5171] vfs_link+0x5b4/0x744 [ 81.307432][ T5171] do_linkat+0x258/0x750 [ 81.308124][ T5171] __arm64_sys_linkat+0xe4/0x100 [ 81.308944][ T5171] invoke_syscall+0x98/0x2b0 [ 81.309703][ T5171] el0_svc_common+0x138/0x258 [ 81.310478][ T5171] do_el0_svc+0x58/0x13c [ 81.311202][ T5171] el0_svc+0x78/0x1d0 [ 81.311871][ T5171] el0t_64_sync_handler+0xcc/0xe4 [ 81.312732][ T5171] el0t_64_sync+0x1a0/0x1a4 [ 81.314697][ T5171] ------------[ cut here ]------------ [ 81.315717][ T5171] WARNING: CPU: 1 PID: 5171 at fs/btrfs/inode.c:6776 btrfs_add_link+0x718/0xa9c [ 81.317171][ T5171] Modules linked in: [ 81.317814][ T5171] CPU: 1 PID: 5171 Comm: syz.0.26 Tainted: G W syzkaller #0 [ 81.319293][ T5171] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/18/2026 [ 81.320952][ T5171] pstate: 62400005 (nZCv daif +PAN -UAO +TCO -DIT -SSBS BTYPE=--) [ 81.322194][ T5171] pc : btrfs_add_link+0x718/0xa9c [ 81.323023][ T5171] lr : btrfs_add_link+0x718/0xa9c [ 81.323894][ T5171] sp : ffff800020ce79e0 [ 81.324590][ T5171] x29: ffff800020ce7ae0 x28: ffff0000de1dfd10 x27: 0000000000000107 [ 81.325906][ T5171] x26: 00000000fffffff4 x25: 0000000000000001 x24: dfff800000000000 [ 81.327309][ T5171] x23: 0000000000000005 x22: 1fffe0001bc3bfad x21: ffff70000419cf44 [ 81.328662][ T5171] x20: 00000000fffffff4 x19: ffff0000de1dfd68 x18: 0000000000000001 [ 81.330010][ T5171] x17: 0000000000000000 x16: ffff80001125f77c x15: 00000000ffffffff [ 81.331357][ T5171] x14: 0000000000000001 x13: 1fffe000341f47ab x12: 0000000000ff0100 [ 81.332746][ T5171] x11: 0000000000000000 x10: 0000000000000000 x9 : 67e8a460428ee400 [ 81.334080][ T5171] x8 : 67e8a460428ee400 x7 : 0000000000000001 x6 : 0000000000000001 [ 81.335463][ T5171] x5 : ffff800020ce72f8 x4 : ffff80001437f3e0 x3 : ffff80000850932c [ 81.336802][ T5171] x2 : 0000000000000001 x1 : 0000000100000000 x0 : 0000000000000026 [ 81.338194][ T5171] Call trace: [ 81.338712][ T5171] btrfs_add_link+0x718/0xa9c [ 81.339522][ T5171] btrfs_link+0x3a4/0x694 [ 81.340213][ T5171] vfs_link+0x5b4/0x744 [ 81.340928][ T5171] do_linkat+0x258/0x750 [ 81.341656][ T5171] __arm64_sys_linkat+0xe4/0x100 [ 81.342426][ T5171] invoke_syscall+0x98/0x2b0 [ 81.343177][ T5171] el0_svc_common+0x138/0x258 [ 81.344003][ T5171] do_el0_svc+0x58/0x13c [ 81.344744][ T5171] el0_svc+0x78/0x1d0 [ 81.345397][ T5171] el0t_64_sync_handler+0xcc/0xe4 [ 81.346206][ T5171] el0t_64_sync+0x1a0/0x1a4 [ 81.347001][ T5171] irq event stamp: 79918 [ 81.347682][ T5171] hardirqs last enabled at (79917): [] __up_console_sem+0xb4/0xfc [ 81.349299][ T5171] hardirqs last disabled at (79918): [] el1_dbg+0x24/0x80 [ 81.350757][ T5171] softirqs last enabled at (79898): [] handle_softirqs+0xa40/0xbe4 [ 81.352294][ T5171] softirqs last disabled at (79873): [] __irq_exit_rcu+0x240/0x43c [ 81.353941][ T5171] ---[ end trace 4bff21fd228f5f1a ]--- [ 81.355649][ T5171] BTRFS: error (device loop0) in btrfs_add_link:6776: errno=-12 Out of memory [ 81.502606][ T5193] BTRFS: device fsid ed167579-eb65-4e76-9a50-61ac97e9b59d devid 1 transid 8 /dev/loop0 scanned by syz.0.27 (5193) [ 81.522715][ T5193] FAULT_INJECTION: forcing a failure. [ 81.522715][ T5193] name fail_page_alloc, interval 1, probability 0, space 0, times 0 [ 81.525014][ T5193] CPU: 0 PID: 5193 Comm: syz.0.27 Tainted: G W syzkaller #0 [ 81.526413][ T5193] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/18/2026 [ 81.528088][ T5193] Call trace: [ 81.528629][ T5193] dump_backtrace+0x0/0x458 [ 81.529348][ T5193] show_stack+0x2c/0x3c [ 81.530059][ T5193] __dump_stack+0x30/0x40 [ 81.530843][ T5193] dump_stack_lvl+0xf4/0x15c [ 81.531640][ T5193] dump_stack+0x1c/0x5c [ 81.532321][ T5193] should_fail+0x3bc/0x514 [ 81.533047][ T5193] should_fail_alloc_page+0x74/0xa8 [ 81.533890][ T5193] prepare_alloc_pages+0x160/0x45c [ 81.534738][ T5193] __alloc_pages+0x108/0x470 [ 81.535482][ T5193] alloc_pages+0x34c/0x5c0 [ 81.536273][ T5193] new_slab+0xe0/0x544 [ 81.536944][ T5193] ___slab_alloc+0x6b4/0xd8c [ 81.537695][ T5193] __slab_alloc+0x68/0xc0 [ 81.538451][ T5193] kmem_cache_alloc+0x2a4/0x3d4 [ 81.539326][ T5193] btrfs_alloc_path+0x5c/0x68 [ 81.540134][ T5193] btrfs_insert_inode_ref+0xf0/0xa2c [ 81.540977][ T5193] btrfs_add_link+0x248/0xa9c [ 81.541699][ T5193] btrfs_link+0x3a4/0x694 [ 81.542401][ T5193] vfs_link+0x5b4/0x744 [ 81.543086][ T5193] do_linkat+0x258/0x750 [ 81.543824][ T5193] __arm64_sys_linkat+0xe4/0x100 [ 81.544630][ T5193] invoke_syscall+0x98/0x2b0 [ 81.545340][ T5193] el0_svc_common+0x138/0x258 [ 81.546126][ T5193] do_el0_svc+0x58/0x13c [ 81.546836][ T5193] el0_svc+0x78/0x1d0 [ 81.547473][ T5193] el0t_64_sync_handler+0xcc/0xe4 [ 81.548313][ T5193] el0t_64_sync+0x1a0/0x1a4 [ 81.606208][ T4946] BTRFS: device fsid ed167579-eb65-4e76-9a50-61ac97e9b59d devid 1 transid 12 /dev/loop0 scanned by udevd (4946) [ 81.922557][ T5214] FAULT_INJECTION: forcing a failure. [ 81.922557][ T5214] name failslab, interval 1, probability 0, space 0, times 0 [ 81.924941][ T5214] CPU: 0 PID: 5214 Comm: syz.0.28 Tainted: G W syzkaller #0 [ 81.926344][ T5214] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/18/2026 [ 81.928013][ T5214] Call trace: [ 81.928585][ T5214] dump_backtrace+0x0/0x458 [ 81.929346][ T5214] show_stack+0x2c/0x3c [ 81.930014][ T5214] __dump_stack+0x30/0x40 [ 81.930740][ T5214] dump_stack_lvl+0xf4/0x15c [ 81.931447][ T5214] dump_stack+0x1c/0x5c [ 81.932135][ T5214] should_fail+0x3bc/0x514 [ 81.932881][ T5214] __should_failslab+0xbc/0x10c [ 81.933663][ T5214] should_failslab+0x10/0x28 [ 81.934450][ T5214] slab_pre_alloc_hook+0x64/0xe8 [ 81.935257][ T5214] kmem_cache_alloc+0x94/0x3d4 [ 81.936068][ T5214] btrfs_alloc_path+0x5c/0x68 [ 81.936823][ T5214] btrfs_insert_dir_item+0x184/0x3e8 [ 81.937701][ T5214] btrfs_add_link+0x2b0/0xa9c [ 81.938470][ T5214] btrfs_link+0x3a4/0x694 [ 81.939139][ T5214] vfs_link+0x5b4/0x744 [ 81.939768][ T5214] do_linkat+0x258/0x750 [ 81.940437][ T5214] __arm64_sys_linkat+0xe4/0x100 [ 81.941198][ T5214] invoke_syscall+0x98/0x2b0 [ 81.941940][ T5214] el0_svc_common+0x138/0x258 [ 81.942663][ T5214] do_el0_svc+0x58/0x13c [ 81.943306][ T5214] el0_svc+0x78/0x1d0 [ 81.943941][ T5214] el0t_64_sync_handler+0xcc/0xe4 [ 81.944702][ T5214] el0t_64_sync+0x1a0/0x1a4 [ 81.949870][ T5214] ------------[ cut here ]------------ [ 81.950991][ T5214] WARNING: CPU: 1 PID: 5214 at fs/btrfs/inode.c:6776 btrfs_add_link+0x718/0xa9c [ 81.952490][ T5214] Modules linked in: [ 81.953122][ T5214] CPU: 1 PID: 5214 Comm: syz.0.28 Tainted: G W syzkaller #0 [ 81.954552][ T5214] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/18/2026 [ 81.956299][ T5214] pstate: 62400005 (nZCv daif +PAN -UAO +TCO -DIT -SSBS BTYPE=--) [ 81.957593][ T5214] pc : btrfs_add_link+0x718/0xa9c [ 81.958482][ T5214] lr : btrfs_add_link+0x718/0xa9c [ 81.959285][ T5214] sp : ffff800020f079e0 [ 81.959980][ T5214] x29: ffff800020f07ae0 x28: ffff0000de139f20 x27: 0000000000000107 [ 81.961341][ T5214] x26: 00000000fffffff4 x25: 0000000000000001 x24: dfff800000000000 [ 81.962724][ T5214] x23: 0000000000000005 x22: 1fffe0001bc273ef x21: ffff7000041e0f44 [ 81.964034][ T5214] x20: 00000000fffffff4 x19: ffff0000de139f78 x18: 0000000000000001 [ 81.965351][ T5214] x17: 0000000000000000 x16: ffff80001125f77c x15: 00000000ffffffff [ 81.966748][ T5214] x14: 0000000000000001 x13: 1fffe000341f47ab x12: 0000000000ff0100 [ 81.968115][ T5214] x11: 0000000000000000 x10: 0000000000000000 x9 : b2813a033e7b5500 [ 81.969435][ T5214] x8 : b2813a033e7b5500 x7 : 0000000000000001 x6 : 0000000000000001 [ 81.970820][ T5214] x5 : ffff800020f072f8 x4 : ffff80001437f3e0 x3 : ffff80000850932c [ 81.972139][ T5214] x2 : 0000000000000001 x1 : 0000000100000000 x0 : 0000000000000026 [ 81.973531][ T5214] Call trace: [ 81.974085][ T5214] btrfs_add_link+0x718/0xa9c [ 81.974883][ T5214] btrfs_link+0x3a4/0x694 [ 81.975621][ T5214] vfs_link+0x5b4/0x744 [ 81.976317][ T5214] do_linkat+0x258/0x750 [ 81.977074][ T5214] __arm64_sys_linkat+0xe4/0x100 [ 81.977911][ T5214] invoke_syscall+0x98/0x2b0 [ 81.978641][ T5214] el0_svc_common+0x138/0x258 [ 81.979333][ T5214] do_el0_svc+0x58/0x13c [ 81.980012][ T5214] el0_svc+0x78/0x1d0 [ 81.980700][ T5214] el0t_64_sync_handler+0xcc/0xe4 [ 81.981487][ T5214] el0t_64_sync+0x1a0/0x1a4 [ 81.982161][ T5214] irq event stamp: 80488 [ 81.982831][ T5214] hardirqs last enabled at (80487): [] __up_console_sem+0xb4/0xfc [ 81.984340][ T5214] hardirqs last disabled at (80488): [] el1_dbg+0x24/0x80 [ 81.985812][ T5214] softirqs last enabled at (80468): [] handle_softirqs+0xa40/0xbe4 [ 81.987472][ T5214] softirqs last disabled at (80393): [] __irq_exit_rcu+0x240/0x43c [ 81.989138][ T5214] ---[ end trace 4bff21fd228f5f1b ]--- [ 81.990702][ T5214] BTRFS: error (device loop0) in btrfs_add_link:6776: errno=-12 Out of memory [ 82.202831][ T5239] BTRFS: device fsid ed167579-eb65-4e76-9a50-61ac97e9b59d devid 1 transid 8 /dev/loop0 scanned by syz.0.29 (5239) [ 82.222684][ T5239] FAULT_INJECTION: forcing a failure. [ 82.222684][ T5239] name failslab, interval 1, probability 0, space 0, times 0 [ 82.224688][ T5239] CPU: 1 PID: 5239 Comm: syz.0.29 Tainted: G W syzkaller #0 [ 82.226162][ T5239] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/18/2026 [ 82.227788][ T5239] Call trace: [ 82.228309][ T5239] dump_backtrace+0x0/0x458 [ 82.229107][ T5239] show_stack+0x2c/0x3c [ 82.229760][ T5239] __dump_stack+0x30/0x40 [ 82.230502][ T5239] dump_stack_lvl+0xf4/0x15c [ 82.231282][ T5239] dump_stack+0x1c/0x5c [ 82.231988][ T5239] should_fail+0x3bc/0x514 [ 82.232718][ T5239] __should_failslab+0xbc/0x10c [ 82.233506][ T5239] should_failslab+0x10/0x28 [ 82.234245][ T5239] slab_pre_alloc_hook+0x64/0xe8 [ 82.235037][ T5239] kmem_cache_alloc+0x94/0x3d4 [ 82.235817][ T5239] btrfs_alloc_path+0x5c/0x68 [ 82.236620][ T5239] btrfs_insert_inode_ref+0xf0/0xa2c [ 82.237526][ T5239] btrfs_add_link+0x248/0xa9c [ 82.238326][ T5239] btrfs_link+0x3a4/0x694 [ 82.239042][ T5239] vfs_link+0x5b4/0x744 [ 82.239738][ T5239] do_linkat+0x258/0x750 [ 82.240531][ T5239] __arm64_sys_linkat+0xe4/0x100 [ 82.241425][ T5239] invoke_syscall+0x98/0x2b0 [ 82.242162][ T5239] el0_svc_common+0x138/0x258 [ 82.242924][ T5239] do_el0_svc+0x58/0x13c [ 82.243657][ T5239] el0_svc+0x78/0x1d0 [ 82.244340][ T5239] el0t_64_sync_handler+0xcc/0xe4 [ 82.245217][ T5239] el0t_64_sync+0x1a0/0x1a4 [ 82.421128][ T5261] BTRFS: device fsid ed167579-eb65-4e76-9a50-61ac97e9b59d devid 1 transid 8 /dev/loop0 scanned by syz.0.30 (5261) [ 82.451491][ T5261] FAULT_INJECTION: forcing a failure. [ 82.451491][ T5261] name failslab, interval 1, probability 0, space 0, times 0 [ 82.453774][ T5261] CPU: 0 PID: 5261 Comm: syz.0.30 Tainted: G W syzkaller #0 [ 82.455220][ T5261] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/18/2026 [ 82.456781][ T5261] Call trace: [ 82.457265][ T5261] dump_backtrace+0x0/0x458 [ 82.458019][ T5261] show_stack+0x2c/0x3c [ 82.458737][ T5261] __dump_stack+0x30/0x40 [ 82.459450][ T5261] dump_stack_lvl+0xf4/0x15c [ 82.460209][ T5261] dump_stack+0x1c/0x5c [ 82.460943][ T5261] should_fail+0x3bc/0x514 [ 82.461631][ T5261] __should_failslab+0xbc/0x10c [ 82.462454][ T5261] should_failslab+0x10/0x28 [ 82.463246][ T5261] slab_pre_alloc_hook+0x64/0xe8 [ 82.464127][ T5261] kmem_cache_alloc+0x94/0x3d4 [ 82.464955][ T5261] btrfs_alloc_path+0x5c/0x68 [ 82.465715][ T5261] btrfs_insert_inode_ref+0xf0/0xa2c [ 82.466646][ T5261] btrfs_add_link+0x248/0xa9c [ 82.467424][ T5261] btrfs_link+0x3a4/0x694 [ 82.468076][ T5261] vfs_link+0x5b4/0x744 [ 82.468706][ T5261] do_linkat+0x258/0x750 [ 82.469465][ T5261] __arm64_sys_linkat+0xe4/0x100 [ 82.470309][ T5261] invoke_syscall+0x98/0x2b0 [ 82.471075][ T5261] el0_svc_common+0x138/0x258 [ 82.471935][ T5261] do_el0_svc+0x58/0x13c [ 82.472638][ T5261] el0_svc+0x78/0x1d0 [ 82.473324][ T5261] el0t_64_sync_handler+0xcc/0xe4 [ 82.474213][ T5261] el0t_64_sync+0x1a0/0x1a4 [ 82.661908][ T5283] BTRFS: device fsid ed167579-eb65-4e76-9a50-61ac97e9b59d devid 1 transid 8 /dev/loop0 scanned by syz.0.31 (5283) [ 82.682378][ T5283] FAULT_INJECTION: forcing a failure. [ 82.682378][ T5283] name failslab, interval 1, probability 0, space 0, times 0 [ 82.684473][ T5283] CPU: 1 PID: 5283 Comm: syz.0.31 Tainted: G W syzkaller #0 [ 82.685949][ T5283] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/18/2026 [ 82.687539][ T5283] Call trace: [ 82.688073][ T5283] dump_backtrace+0x0/0x458 [ 82.688825][ T5283] show_stack+0x2c/0x3c [ 82.689506][ T5283] __dump_stack+0x30/0x40 [ 82.690257][ T5283] dump_stack_lvl+0xf4/0x15c [ 82.691040][ T5283] dump_stack+0x1c/0x5c [ 82.691728][ T5283] should_fail+0x3bc/0x514 [ 82.692455][ T5283] __should_failslab+0xbc/0x10c [ 82.693266][ T5283] should_failslab+0x10/0x28 [ 82.694019][ T5283] slab_pre_alloc_hook+0x64/0xe8 [ 82.694846][ T5283] kmem_cache_alloc+0x94/0x3d4 [ 82.695700][ T5283] btrfs_alloc_path+0x5c/0x68 [ 82.696554][ T5283] btrfs_insert_dir_item+0x184/0x3e8 [ 82.697494][ T5283] btrfs_add_link+0x2b0/0xa9c [ 82.698337][ T5283] btrfs_link+0x3a4/0x694 [ 82.699065][ T5283] vfs_link+0x5b4/0x744 [ 82.699760][ T5283] do_linkat+0x258/0x750 [ 82.700546][ T5283] __arm64_sys_linkat+0xe4/0x100 [ 82.701375][ T5283] invoke_syscall+0x98/0x2b0 [ 82.702153][ T5283] el0_svc_common+0x138/0x258 [ 82.702988][ T5283] do_el0_svc+0x58/0x13c [ 82.703672][ T5283] el0_svc+0x78/0x1d0 [ 82.704360][ T5283] el0t_64_sync_handler+0xcc/0xe4 [ 82.705225][ T5283] el0t_64_sync+0x1a0/0x1a4 [ 82.708060][ T5283] ------------[ cut here ]------------ [ 82.709117][ T5283] WARNING: CPU: 0 PID: 5283 at fs/btrfs/inode.c:6776 btrfs_add_link+0x718/0xa9c [ 82.710571][ T5283] Modules linked in: [ 82.711230][ T5283] CPU: 0 PID: 5283 Comm: syz.0.31 Tainted: G W syzkaller #0 [ 82.712654][ T5283] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/18/2026 [ 82.714298][ T5283] pstate: 62400005 (nZCv daif +PAN -UAO +TCO -DIT -SSBS BTYPE=--) [ 82.715521][ T5283] pc : btrfs_add_link+0x718/0xa9c [ 82.716322][ T5283] lr : btrfs_add_link+0x718/0xa9c [ 82.717104][ T5283] sp : ffff800020f079e0 [ 82.717823][ T5283] x29: ffff800020f07ae0 x28: ffff0000dcb2a420 x27: 0000000000000107 [ 82.719117][ T5283] x26: 00000000fffffff4 x25: 0000000000000001 x24: dfff800000000000 [ 82.720472][ T5283] x23: 0000000000000005 x22: 1fffe0001b96548f x21: ffff7000041e0f44 [ 82.721861][ T5283] x20: 00000000fffffff4 x19: ffff0000dcb2a478 x18: 0000000000000001 [ 82.723238][ T5283] x17: 0000000000000000 x16: ffff80001125f77c x15: 00000000ffffffff [ 82.724565][ T5283] x14: 0000000000000001 x13: 1fffe000341f05ab x12: 0000000000ff0100 [ 82.725894][ T5283] x11: 0000000000000000 x10: 0000000000000000 x9 : f69c23ba24b22900 [ 82.727242][ T5283] x8 : f69c23ba24b22900 x7 : 0000000000000001 x6 : 0000000000000001 [ 82.728559][ T5283] x5 : ffff800020f072f8 x4 : ffff80001437f3e0 x3 : ffff80000850932c [ 82.729905][ T5283] x2 : 0000000000000001 x1 : 0000000100000000 x0 : 0000000000000026 [ 82.731352][ T5283] Call trace: [ 82.731899][ T5283] btrfs_add_link+0x718/0xa9c [ 82.732721][ T5283] btrfs_link+0x3a4/0x694 [ 82.733443][ T5283] vfs_link+0x5b4/0x744 [ 82.734147][ T5283] do_linkat+0x258/0x750 [ 82.734869][ T5283] __arm64_sys_linkat+0xe4/0x100 [ 82.735701][ T5283] invoke_syscall+0x98/0x2b0 [ 82.736498][ T5283] el0_svc_common+0x138/0x258 [ 82.737321][ T5283] do_el0_svc+0x58/0x13c [ 82.738065][ T5283] el0_svc+0x78/0x1d0 [ 82.738743][ T5283] el0t_64_sync_handler+0xcc/0xe4 [ 82.739580][ T5283] el0t_64_sync+0x1a0/0x1a4 [ 82.740329][ T5283] irq event stamp: 80008 [ 82.741000][ T5283] hardirqs last enabled at (80007): [] __up_console_sem+0xb4/0xfc [ 82.742641][ T5283] hardirqs last disabled at (80008): [] el1_dbg+0x24/0x80 [ 82.744200][ T5283] softirqs last enabled at (79988): [] handle_softirqs+0xa40/0xbe4 [ 82.745800][ T5283] softirqs last disabled at (79937): [] __irq_exit_rcu+0x240/0x43c [ 82.747315][ T5283] ---[ end trace 4bff21fd228f5f1c ]--- [ 82.750087][ T5283] BTRFS: error (device loop0) in btrfs_add_link:6776: errno=-12 Out of memory [ 82.918766][ T5305] BTRFS: device fsid ed167579-eb65-4e76-9a50-61ac97e9b59d devid 1 transid 8 /dev/loop0 scanned by syz.0.32 (5305) [ 82.949469][ T5305] FAULT_INJECTION: forcing a failure. [ 82.949469][ T5305] name failslab, interval 1, probability 0, space 0, times 0 [ 82.951478][ T5305] CPU: 0 PID: 5305 Comm: syz.0.32 Tainted: G W syzkaller #0 [ 82.952945][ T5305] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/18/2026 [ 82.954589][ T5305] Call trace: [ 82.955130][ T5305] dump_backtrace+0x0/0x458 [ 82.955873][ T5305] show_stack+0x2c/0x3c [ 82.956604][ T5305] __dump_stack+0x30/0x40 [ 82.957350][ T5305] dump_stack_lvl+0xf4/0x15c [ 82.958174][ T5305] dump_stack+0x1c/0x5c [ 82.958866][ T5305] should_fail+0x3bc/0x514 [ 82.959645][ T5305] __should_failslab+0xbc/0x10c [ 82.960501][ T5305] should_failslab+0x10/0x28 [ 82.961285][ T5305] slab_pre_alloc_hook+0x64/0xe8 [ 82.962059][ T5305] kmem_cache_alloc+0x94/0x3d4 [ 82.962774][ T5305] btrfs_alloc_path+0x5c/0x68 [ 82.963524][ T5305] btrfs_insert_inode_ref+0xf0/0xa2c [ 82.964380][ T5305] btrfs_add_link+0x248/0xa9c [ 82.965156][ T5305] btrfs_link+0x3a4/0x694 [ 82.965826][ T5305] vfs_link+0x5b4/0x744 [ 82.966485][ T5305] do_linkat+0x258/0x750 [ 82.967146][ T5305] __arm64_sys_linkat+0xe4/0x100 [ 82.967978][ T5305] invoke_syscall+0x98/0x2b0 [ 82.968769][ T5305] el0_svc_common+0x138/0x258 [ 82.969557][ T5305] do_el0_svc+0x58/0x13c [ 82.970215][ T5305] el0_svc+0x78/0x1d0 [ 82.970858][ T5305] el0t_64_sync_handler+0xcc/0xe4 [ 82.971718][ T5305] el0t_64_sync+0x1a0/0x1a4 [ 83.119221][ T5327] BTRFS: device fsid ed167579-eb65-4e76-9a50-61ac97e9b59d devid 1 transid 8 /dev/loop0 scanned by syz.0.33 (5327) [ 83.138632][ T5327] FAULT_INJECTION: forcing a failure. [ 83.138632][ T5327] name failslab, interval 1, probability 0, space 0, times 0 [ 83.140805][ T5327] CPU: 1 PID: 5327 Comm: syz.0.33 Tainted: G W syzkaller #0 [ 83.142187][ T5327] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/18/2026 [ 83.143910][ T5327] Call trace: [ 83.144422][ T5327] dump_backtrace+0x0/0x458 [ 83.145177][ T5327] show_stack+0x2c/0x3c [ 83.145917][ T5327] __dump_stack+0x30/0x40 [ 83.146623][ T5327] dump_stack_lvl+0xf4/0x15c [ 83.147409][ T5327] dump_stack+0x1c/0x5c [ 83.148107][ T5327] should_fail+0x3bc/0x514 [ 83.148872][ T5327] __should_failslab+0xbc/0x10c [ 83.149679][ T5327] should_failslab+0x10/0x28 [ 83.150417][ T5327] slab_pre_alloc_hook+0x64/0xe8 [ 83.151259][ T5327] kmem_cache_alloc+0x94/0x3d4 [ 83.152022][ T5327] start_transaction+0x4d0/0x13ec [ 83.152920][ T5327] btrfs_start_transaction+0x34/0x44 [ 83.153762][ T5327] btrfs_link+0x1f0/0x694 [ 83.154483][ T5327] vfs_link+0x5b4/0x744 [ 83.155215][ T5327] do_linkat+0x258/0x750 [ 83.155953][ T5327] __arm64_sys_linkat+0xe4/0x100 [ 83.156775][ T5327] invoke_syscall+0x98/0x2b0 [ 83.157564][ T5327] el0_svc_common+0x138/0x258 [ 83.158346][ T5327] do_el0_svc+0x58/0x13c [ 83.159047][ T5327] el0_svc+0x78/0x1d0 [ 83.159736][ T5327] el0t_64_sync_handler+0xcc/0xe4 [ 83.160567][ T5327] el0t_64_sync+0x1a0/0x1a4 [ 83.199416][ T4946] BTRFS: device fsid ed167579-eb65-4e76-9a50-61ac97e9b59d devid 1 transid 12 /dev/loop0 scanned by udevd (4946) 1970/01/01 00:01:23 executed programs: 20 [ 83.305053][ T5348] set_capacity_and_notify: 8 callbacks suppressed [ 83.305064][ T5348] loop0: detected capacity change from 0 to 32768 [ 83.312652][ T5348] btrfs_printk: 231 callbacks suppressed [ 83.312660][ T5348] BTRFS info (device loop0): using sha256 (sha256-ce) checksum algorithm [ 83.315092][ T5348] BTRFS info (device loop0): metadata ratio 1025 [ 83.316138][ T5348] BTRFS info (device loop0): doing ref verification [ 83.317938][ T5348] BTRFS info (device loop0): force clearing of disk cache [ 83.319293][ T5348] BTRFS info (device loop0): turning off barriers [ 83.320445][ T5348] BTRFS info (device loop0): setting nodatacow, compression disabled [ 83.321873][ T5348] BTRFS info (device loop0): enabling ssd optimizations [ 83.323117][ T5348] BTRFS info (device loop0): using spread ssd allocation scheme [ 83.324430][ T5348] BTRFS info (device loop0): not using ssd optimizations [ 83.325573][ T5348] BTRFS info (device loop0): not using spread ssd allocation scheme [ 83.326995][ T5348] BTRFS info (device loop0): using free space tree [ 83.328061][ T5348] BTRFS info (device loop0): has skinny extents [ 83.335298][ T5348] BTRFS info (device loop0): clearing free space tree [ 83.336495][ T5348] BTRFS info (device loop0): clearing compat-ro feature flag for FREE_SPACE_TREE (0x1) [ 83.338383][ T5348] BTRFS info (device loop0): clearing compat-ro feature flag for FREE_SPACE_TREE_VALID (0x2) [ 83.341591][ T5348] BTRFS info (device loop0): creating free space tree [ 83.343148][ T5348] BTRFS info (device loop0): setting compat-ro feature flag for FREE_SPACE_TREE (0x1) [ 83.344815][ T5348] BTRFS info (device loop0): setting compat-ro feature flag for FREE_SPACE_TREE_VALID (0x2) [ 83.349207][ T5348] FAULT_INJECTION: forcing a failure. [ 83.349207][ T5348] name failslab, interval 1, probability 0, space 0, times 0 [ 83.351224][ T5348] CPU: 1 PID: 5348 Comm: syz.0.34 Tainted: G W syzkaller #0 [ 83.352675][ T5348] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/18/2026 [ 83.354363][ T5348] Call trace: [ 83.354879][ T5348] dump_backtrace+0x0/0x458 [ 83.355668][ T5348] show_stack+0x2c/0x3c [ 83.356349][ T5348] __dump_stack+0x30/0x40 [ 83.357091][ T5348] dump_stack_lvl+0xf4/0x15c [ 83.357871][ T5348] dump_stack+0x1c/0x5c [ 83.358598][ T5348] should_fail+0x3bc/0x514 [ 83.359375][ T5348] __should_failslab+0xbc/0x10c [ 83.360182][ T5348] should_failslab+0x10/0x28 [ 83.360949][ T5348] slab_pre_alloc_hook+0x64/0xe8 [ 83.361763][ T5348] kmem_cache_alloc+0x94/0x3d4 [ 83.362562][ T5348] btrfs_alloc_path+0x5c/0x68 [ 83.363345][ T5348] btrfs_insert_inode_ref+0xf0/0xa2c [ 83.364256][ T5348] btrfs_add_link+0x248/0xa9c [ 83.365000][ T5348] btrfs_link+0x3a4/0x694 [ 83.365746][ T5348] vfs_link+0x5b4/0x744 [ 83.366399][ T5348] do_linkat+0x258/0x750 [ 83.367130][ T5348] __arm64_sys_linkat+0xe4/0x100 [ 83.367962][ T5348] invoke_syscall+0x98/0x2b0 [ 83.368741][ T5348] el0_svc_common+0x138/0x258 [ 83.369497][ T5348] do_el0_svc+0x58/0x13c [ 83.370246][ T5348] el0_svc+0x78/0x1d0 [ 83.370947][ T5348] el0t_64_sync_handler+0xcc/0xe4 [ 83.371811][ T5348] el0t_64_sync+0x1a0/0x1a4 [ 83.407647][ T4946] BTRFS: device fsid ed167579-eb65-4e76-9a50-61ac97e9b59d devid 1 transid 12 /dev/loop0 scanned by udevd (4946) [ 83.504850][ T5370] loop0: detected capacity change from 0 to 32768 [ 83.569091][ T5370] BTRFS info (device loop0): using sha256 (sha256-ce) checksum algorithm [ 83.570756][ T5370] BTRFS info (device loop0): metadata ratio 1025 [ 83.571835][ T5370] BTRFS info (device loop0): doing ref verification [ 83.572935][ T5370] BTRFS info (device loop0): force clearing of disk cache [ 83.574171][ T5370] BTRFS info (device loop0): turning off barriers [ 83.575301][ T5370] BTRFS info (device loop0): setting nodatacow, compression disabled [ 83.576681][ T5370] BTRFS info (device loop0): enabling ssd optimizations [ 83.578456][ T5370] BTRFS info (device loop0): using spread ssd allocation scheme [ 83.579718][ T5370] BTRFS info (device loop0): not using ssd optimizations [ 83.580969][ T5370] BTRFS info (device loop0): not using spread ssd allocation scheme [ 83.582257][ T5370] BTRFS info (device loop0): using free space tree [ 83.583310][ T5370] BTRFS info (device loop0): has skinny extents [ 83.592355][ T5370] BTRFS info (device loop0): clearing free space tree [ 83.593471][ T5370] BTRFS info (device loop0): clearing compat-ro feature flag for FREE_SPACE_TREE (0x1) [ 83.595049][ T5370] BTRFS info (device loop0): clearing compat-ro feature flag for FREE_SPACE_TREE_VALID (0x2) [ 83.598766][ T5370] BTRFS info (device loop0): creating free space tree [ 83.600213][ T5370] BTRFS info (device loop0): setting compat-ro feature flag for FREE_SPACE_TREE (0x1) [ 83.601890][ T5370] BTRFS info (device loop0): setting compat-ro feature flag for FREE_SPACE_TREE_VALID (0x2) [ 83.605824][ T5370] FAULT_INJECTION: forcing a failure. [ 83.605824][ T5370] name failslab, interval 1, probability 0, space 0, times 0 [ 83.608865][ T5370] CPU: 0 PID: 5370 Comm: syz.0.35 Tainted: G W syzkaller #0 [ 83.610364][ T5370] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/18/2026 [ 83.612076][ T5370] Call trace: [ 83.612629][ T5370] dump_backtrace+0x0/0x458 [ 83.613462][ T5370] show_stack+0x2c/0x3c [ 83.614166][ T5370] __dump_stack+0x30/0x40 [ 83.614909][ T5370] dump_stack_lvl+0xf4/0x15c [ 83.615695][ T5370] dump_stack+0x1c/0x5c [ 83.616367][ T5370] should_fail+0x3bc/0x514 [ 83.617080][ T5370] __should_failslab+0xbc/0x10c [ 83.617909][ T5370] should_failslab+0x10/0x28 [ 83.618695][ T5370] slab_pre_alloc_hook+0x64/0xe8 [ 83.619554][ T5370] kmem_cache_alloc+0x94/0x3d4 [ 83.620373][ T5370] btrfs_alloc_path+0x5c/0x68 [ 83.621136][ T5370] btrfs_insert_inode_ref+0xf0/0xa2c [ 83.622061][ T5370] btrfs_add_link+0x248/0xa9c [ 83.622853][ T5370] btrfs_link+0x3a4/0x694 [ 83.623555][ T5370] vfs_link+0x5b4/0x744 [ 83.624245][ T5370] do_linkat+0x258/0x750 [ 83.624956][ T5370] __arm64_sys_linkat+0xe4/0x100 [ 83.625780][ T5370] invoke_syscall+0x98/0x2b0 [ 83.626588][ T5370] el0_svc_common+0x138/0x258 [ 83.627383][ T5370] do_el0_svc+0x58/0x13c [ 83.628065][ T5370] el0_svc+0x78/0x1d0 [ 83.628714][ T5370] el0t_64_sync_handler+0xcc/0xe4 [ 83.629517][ T5370] el0t_64_sync+0x1a0/0x1a4 [ 83.770616][ T5393] loop0: detected capacity change from 0 to 32768 [ 83.851165][ T5393] BTRFS: device fsid ed167579-eb65-4e76-9a50-61ac97e9b59d devid 1 transid 8 /dev/loop0 scanned by syz.0.36 (5393) [ 83.854740][ T5393] BTRFS info (device loop0): using sha256 (sha256-ce) checksum algorithm [ 83.856251][ T5393] BTRFS info (device loop0): metadata ratio 1025 [ 83.857771][ T5393] BTRFS info (device loop0): doing ref verification [ 83.858923][ T5393] BTRFS info (device loop0): force clearing of disk cache [ 83.860169][ T5393] BTRFS info (device loop0): turning off barriers [ 83.861256][ T5393] BTRFS info (device loop0): setting nodatacow, compression disabled [ 83.862639][ T5393] BTRFS info (device loop0): enabling ssd optimizations [ 83.863917][ T5393] BTRFS info (device loop0): using spread ssd allocation scheme [ 83.865111][ T5393] BTRFS info (device loop0): not using ssd optimizations [ 83.866266][ T5393] BTRFS info (device loop0): not using spread ssd allocation scheme [ 83.868284][ T5393] BTRFS info (device loop0): using free space tree [ 83.869283][ T5393] BTRFS info (device loop0): has skinny extents [ 83.876681][ T5393] BTRFS info (device loop0): clearing free space tree [ 83.878008][ T5393] BTRFS info (device loop0): clearing compat-ro feature flag for FREE_SPACE_TREE (0x1) [ 83.879695][ T5393] BTRFS info (device loop0): clearing compat-ro feature flag for FREE_SPACE_TREE_VALID (0x2) [ 83.888078][ T5393] BTRFS info (device loop0): creating free space tree [ 83.889455][ T5393] BTRFS info (device loop0): setting compat-ro feature flag for FREE_SPACE_TREE (0x1) [ 83.891041][ T5393] BTRFS info (device loop0): setting compat-ro feature flag for FREE_SPACE_TREE_VALID (0x2) [ 83.895661][ T5393] FAULT_INJECTION: forcing a failure. [ 83.895661][ T5393] name fail_page_alloc, interval 1, probability 0, space 0, times 0 [ 83.898429][ T5393] CPU: 1 PID: 5393 Comm: syz.0.36 Tainted: G W syzkaller #0 [ 83.899741][ T5393] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/18/2026 [ 83.901390][ T5393] Call trace: [ 83.901920][ T5393] dump_backtrace+0x0/0x458 [ 83.902676][ T5393] show_stack+0x2c/0x3c [ 83.903329][ T5393] __dump_stack+0x30/0x40 [ 83.904005][ T5393] dump_stack_lvl+0xf4/0x15c [ 83.904741][ T5393] dump_stack+0x1c/0x5c [ 83.905366][ T5393] should_fail+0x3bc/0x514 [ 83.906108][ T5393] should_fail_alloc_page+0x74/0xa8 [ 83.906966][ T5393] prepare_alloc_pages+0x160/0x45c [ 83.907877][ T5393] __alloc_pages+0x108/0x470 [ 83.908677][ T5393] alloc_pages+0x34c/0x5c0 [ 83.909427][ T5393] new_slab+0xe0/0x544 [ 83.910183][ T5393] ___slab_alloc+0x6b4/0xd8c [ 83.910943][ T5393] __slab_alloc+0x68/0xc0 [ 83.911701][ T5393] kmem_cache_alloc+0x2a4/0x3d4 [ 83.912492][ T5393] start_transaction+0x4d0/0x13ec [ 83.913318][ T5393] btrfs_start_transaction+0x34/0x44 [ 83.914213][ T5393] btrfs_link+0x1f0/0x694 [ 83.914961][ T5393] vfs_link+0x5b4/0x744 [ 83.915675][ T5393] do_linkat+0x258/0x750 [ 83.916389][ T5393] __arm64_sys_linkat+0xe4/0x100 [ 83.917219][ T5393] invoke_syscall+0x98/0x2b0 [ 83.917961][ T5393] el0_svc_common+0x138/0x258 [ 83.918685][ T5393] do_el0_svc+0x58/0x13c [ 83.919429][ T5393] el0_svc+0x78/0x1d0 [ 83.920045][ T5393] el0t_64_sync_handler+0xcc/0xe4 [ 83.920895][ T5393] el0t_64_sync+0x1a0/0x1a4 [ 84.063677][ T5415] loop0: detected capacity change from 0 to 32768 [ 84.101032][ T5415] BTRFS: device fsid ed167579-eb65-4e76-9a50-61ac97e9b59d devid 1 transid 8 /dev/loop0 scanned by syz.0.37 (5415) [ 84.105241][ T5415] BTRFS info (device loop0): using sha256 (sha256-ce) checksum algorithm [ 84.107253][ T5415] BTRFS info (device loop0): metadata ratio 1025 [ 84.109127][ T5415] BTRFS info (device loop0): doing ref verification [ 84.110892][ T5415] BTRFS info (device loop0): force clearing of disk cache [ 84.112115][ T5415] BTRFS info (device loop0): turning off barriers [ 84.113157][ T5415] BTRFS info (device loop0): setting nodatacow, compression disabled [ 84.114377][ T5415] BTRFS info (device loop0): enabling ssd optimizations [ 84.115372][ T5415] BTRFS info (device loop0): using spread ssd allocation scheme [ 84.116547][ T5415] BTRFS info (device loop0): not using ssd optimizations [ 84.117769][ T5415] BTRFS info (device loop0): not using spread ssd allocation scheme [ 84.119070][ T5415] BTRFS info (device loop0): using free space tree [ 84.120161][ T5415] BTRFS info (device loop0): has skinny extents [ 84.130734][ T5415] BTRFS info (device loop0): clearing free space tree [ 84.131934][ T5415] BTRFS info (device loop0): clearing compat-ro feature flag for FREE_SPACE_TREE (0x1) [ 84.133582][ T5415] BTRFS info (device loop0): clearing compat-ro feature flag for FREE_SPACE_TREE_VALID (0x2) [ 84.137561][ T5415] BTRFS info (device loop0): creating free space tree [ 84.138945][ T5415] BTRFS info (device loop0): setting compat-ro feature flag for FREE_SPACE_TREE (0x1) [ 84.140504][ T5415] BTRFS info (device loop0): setting compat-ro feature flag for FREE_SPACE_TREE_VALID (0x2) [ 84.144519][ T5415] FAULT_INJECTION: forcing a failure. [ 84.144519][ T5415] name failslab, interval 1, probability 0, space 0, times 0 [ 84.146697][ T5415] CPU: 0 PID: 5415 Comm: syz.0.37 Tainted: G W syzkaller #0 [ 84.148087][ T5415] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/18/2026 [ 84.149893][ T5415] Call trace: [ 84.150441][ T5415] dump_backtrace+0x0/0x458 [ 84.151226][ T5415] show_stack+0x2c/0x3c [ 84.151946][ T5415] __dump_stack+0x30/0x40 [ 84.152675][ T5415] dump_stack_lvl+0xf4/0x15c [ 84.153386][ T5415] dump_stack+0x1c/0x5c [ 84.154048][ T5415] should_fail+0x3bc/0x514 [ 84.154717][ T5415] __should_failslab+0xbc/0x10c [ 84.155477][ T5415] should_failslab+0x10/0x28 [ 84.156234][ T5415] slab_pre_alloc_hook+0x64/0xe8 [ 84.157020][ T5415] kmem_cache_alloc+0x94/0x3d4 [ 84.157791][ T5415] btrfs_alloc_path+0x5c/0x68 [ 84.158564][ T5415] btrfs_insert_dir_item+0x184/0x3e8 [ 84.159362][ T5415] btrfs_add_link+0x2b0/0xa9c [ 84.160151][ T5415] btrfs_link+0x3a4/0x694 [ 84.160910][ T5415] vfs_link+0x5b4/0x744 [ 84.161601][ T5415] do_linkat+0x258/0x750 [ 84.162330][ T5415] __arm64_sys_linkat+0xe4/0x100 [ 84.163149][ T5415] invoke_syscall+0x98/0x2b0 [ 84.163942][ T5415] el0_svc_common+0x138/0x258 [ 84.164711][ T5415] do_el0_svc+0x58/0x13c [ 84.165444][ T5415] el0_svc+0x78/0x1d0 [ 84.166116][ T5415] el0t_64_sync_handler+0xcc/0xe4 [ 84.166985][ T5415] el0t_64_sync+0x1a0/0x1a4 [ 84.171385][ T5415] ------------[ cut here ]------------ [ 84.173066][ T5415] WARNING: CPU: 0 PID: 5415 at fs/btrfs/inode.c:6776 btrfs_add_link+0x718/0xa9c [ 84.174517][ T5415] Modules linked in: [ 84.175152][ T5415] CPU: 0 PID: 5415 Comm: syz.0.37 Tainted: G W syzkaller #0 [ 84.176603][ T5415] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/18/2026 [ 84.178339][ T5415] pstate: 62400005 (nZCv daif +PAN -UAO +TCO -DIT -SSBS BTYPE=--) [ 84.179668][ T5415] pc : btrfs_add_link+0x718/0xa9c [ 84.180518][ T5415] lr : btrfs_add_link+0x718/0xa9c [ 84.181417][ T5415] sp : ffff800020e079e0 [ 84.182099][ T5415] x29: ffff800020e07ae0 x28: ffff0000de1e6dc0 x27: 0000000000000107 [ 84.183417][ T5415] x26: 00000000fffffff4 x25: 0000000000000001 x24: dfff800000000000 [ 84.184842][ T5415] x23: 0000000000000005 x22: 1fffe0001bc3cdc3 x21: ffff7000041c0f44 [ 84.186187][ T5415] x20: 00000000fffffff4 x19: ffff0000de1e6e18 x18: 0000000000000002 [ 84.187536][ T5415] x17: 0000000040000000 x16: ffff80001125f77c x15: 0000000000000002 [ 84.188927][ T5415] x14: 0000000000000001 x13: 1fffe000341f05ab x12: 0000000000ff0100 [ 84.190343][ T5415] x11: 0000000000000000 x10: 0000000000000000 x9 : 4445341434187d00 [ 84.191772][ T5415] x8 : 4445341434187d00 x7 : 0000000000000000 x6 : 0000000000000000 [ 84.193099][ T5415] x5 : 0000000000000080 x4 : 0000000000000000 x3 : ffff80000850932c [ 84.194506][ T5415] x2 : 0000000000000001 x1 : 0000000100000000 x0 : 0000000000000026 [ 84.195931][ T5415] Call trace: [ 84.196467][ T5415] btrfs_add_link+0x718/0xa9c [ 84.197263][ T5415] btrfs_link+0x3a4/0x694 [ 84.198049][ T5415] vfs_link+0x5b4/0x744 [ 84.198805][ T5415] do_linkat+0x258/0x750 [ 84.199564][ T5415] __arm64_sys_linkat+0xe4/0x100 [ 84.200378][ T5415] invoke_syscall+0x98/0x2b0 [ 84.201194][ T5415] el0_svc_common+0x138/0x258 [ 84.201963][ T5415] do_el0_svc+0x58/0x13c [ 84.202695][ T5415] el0_svc+0x78/0x1d0 [ 84.203335][ T5415] el0t_64_sync_handler+0xcc/0xe4 [ 84.204133][ T5415] el0t_64_sync+0x1a0/0x1a4 [ 84.204874][ T5415] irq event stamp: 80060 [ 84.205581][ T5415] hardirqs last enabled at (80059): [] finish_lock_switch+0xb0/0x1c4 [ 84.207242][ T5415] hardirqs last disabled at (80060): [] el1_dbg+0x24/0x80 [ 84.208719][ T5415] softirqs last enabled at (80032): [] handle_softirqs+0xa40/0xbe4 [ 84.210369][ T5415] softirqs last disabled at (80009): [] __irq_exit_rcu+0x240/0x43c [ 84.212016][ T5415] ---[ end trace 4bff21fd228f5f1d ]--- [ 84.215446][ T5415] BTRFS: error (device loop0) in btrfs_add_link:6776: errno=-12 Out of memory [ 84.217233][ T5415] BTRFS info (device loop0): forced readonly [ 84.393369][ T5437] loop0: detected capacity change from 0 to 32768 [ 84.428358][ T5437] BTRFS: device fsid ed167579-eb65-4e76-9a50-61ac97e9b59d devid 1 transid 8 /dev/loop0 scanned by syz.0.38 (5437) [ 84.432331][ T5437] BTRFS info (device loop0): using sha256 (sha256-ce) checksum algorithm [ 84.433754][ T5437] BTRFS info (device loop0): metadata ratio 1025 [ 84.434794][ T5437] BTRFS info (device loop0): doing ref verification [ 84.435984][ T5437] BTRFS info (device loop0): force clearing of disk cache [ 84.437645][ T5437] BTRFS info (device loop0): turning off barriers [ 84.438657][ T5437] BTRFS info (device loop0): setting nodatacow, compression disabled [ 84.439897][ T5437] BTRFS info (device loop0): enabling ssd optimizations [ 84.440934][ T5437] BTRFS info (device loop0): using spread ssd allocation scheme [ 84.442231][ T5437] BTRFS info (device loop0): not using ssd optimizations [ 84.443266][ T5437] BTRFS info (device loop0): not using spread ssd allocation scheme [ 84.444478][ T5437] BTRFS info (device loop0): using free space tree [ 84.445440][ T5437] BTRFS info (device loop0): has skinny extents [ 84.453115][ T5437] BTRFS info (device loop0): clearing free space tree [ 84.454223][ T5437] BTRFS info (device loop0): clearing compat-ro feature flag for FREE_SPACE_TREE (0x1) [ 84.455805][ T5437] BTRFS info (device loop0): clearing compat-ro feature flag for FREE_SPACE_TREE_VALID (0x2) [ 84.460015][ T5437] BTRFS info (device loop0): creating free space tree [ 84.461403][ T5437] BTRFS info (device loop0): setting compat-ro feature flag for FREE_SPACE_TREE (0x1) [ 84.463122][ T5437] BTRFS info (device loop0): setting compat-ro feature flag for FREE_SPACE_TREE_VALID (0x2) [ 84.467270][ T5437] FAULT_INJECTION: forcing a failure. [ 84.467270][ T5437] name failslab, interval 1, probability 0, space 0, times 0 [ 84.469236][ T5437] CPU: 1 PID: 5437 Comm: syz.0.38 Tainted: G W syzkaller #0 [ 84.470611][ T5437] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/18/2026 [ 84.472255][ T5437] Call trace: [ 84.472767][ T5437] dump_backtrace+0x0/0x458 [ 84.473524][ T5437] show_stack+0x2c/0x3c [ 84.474232][ T5437] __dump_stack+0x30/0x40 [ 84.474899][ T5437] dump_stack_lvl+0xf4/0x15c [ 84.475687][ T5437] dump_stack+0x1c/0x5c [ 84.476290][ T5437] should_fail+0x3bc/0x514 [ 84.476967][ T5437] __should_failslab+0xbc/0x10c [ 84.477782][ T5437] should_failslab+0x10/0x28 [ 84.478545][ T5437] slab_pre_alloc_hook+0x64/0xe8 [ 84.479377][ T5437] kmem_cache_alloc+0x94/0x3d4 [ 84.480142][ T5437] btrfs_alloc_path+0x5c/0x68 [ 84.480959][ T5437] btrfs_insert_dir_item+0x184/0x3e8 [ 84.481893][ T5437] btrfs_add_link+0x2b0/0xa9c [ 84.482714][ T5437] btrfs_link+0x3a4/0x694 [ 84.483473][ T5437] vfs_link+0x5b4/0x744 [ 84.484243][ T5437] do_linkat+0x258/0x750 [ 84.484999][ T5437] __arm64_sys_linkat+0xe4/0x100 [ 84.485841][ T5437] invoke_syscall+0x98/0x2b0 [ 84.486628][ T5437] el0_svc_common+0x138/0x258 [ 84.487442][ T5437] do_el0_svc+0x58/0x13c [ 84.488204][ T5437] el0_svc+0x78/0x1d0 [ 84.488880][ T5437] el0t_64_sync_handler+0xcc/0xe4 [ 84.489760][ T5437] el0t_64_sync+0x1a0/0x1a4 [ 84.490996][ T5437] ------------[ cut here ]------------ [ 84.492010][ T5437] WARNING: CPU: 1 PID: 5437 at fs/btrfs/inode.c:6776 btrfs_add_link+0x718/0xa9c [ 84.493537][ T5437] Modules linked in: [ 84.494131][ T5437] CPU: 1 PID: 5437 Comm: syz.0.38 Tainted: G W syzkaller #0 [ 84.495558][ T5437] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/18/2026 [ 84.497185][ T5437] pstate: 62400005 (nZCv daif +PAN -UAO +TCO -DIT -SSBS BTYPE=--) [ 84.498536][ T5437] pc : btrfs_add_link+0x718/0xa9c [ 84.499337][ T5437] lr : btrfs_add_link+0x718/0xa9c [ 84.500159][ T5437] sp : ffff800021a479e0 [ 84.500840][ T5437] x29: ffff800021a47ae0 x28: ffff0000de1a9210 x27: 0000000000000107 [ 84.502229][ T5437] x26: 00000000fffffff4 x25: 0000000000000001 x24: dfff800000000000 [ 84.503543][ T5437] x23: 0000000000000005 x22: 1fffe0001bc3524d x21: ffff700004348f44 [ 84.504851][ T5437] x20: 00000000fffffff4 x19: ffff0000de1a9268 x18: 0000000000000001 [ 84.506181][ T5437] x17: 0000000000000000 x16: ffff80001125f77c x15: 00000000ffffffff [ 84.507541][ T5437] x14: 0000000000000001 x13: 1fffe000341f47ab x12: 0000000000ff0100 [ 84.508924][ T5437] x11: 0000000000000000 x10: 0000000000000000 x9 : 78d3f1d3451eec00 [ 84.510358][ T5437] x8 : 78d3f1d3451eec00 x7 : 0000000000000001 x6 : 0000000000000001 [ 84.511653][ T5437] x5 : ffff800021a472f8 x4 : ffff80001437f3e0 x3 : ffff80000850932c [ 84.513003][ T5437] x2 : 0000000000000001 x1 : 0000000100000000 x0 : 0000000000000026 [ 84.514429][ T5437] Call trace: [ 84.515023][ T5437] btrfs_add_link+0x718/0xa9c [ 84.515849][ T5437] btrfs_link+0x3a4/0x694 [ 84.516532][ T5437] vfs_link+0x5b4/0x744 [ 84.517207][ T5437] do_linkat+0x258/0x750 [ 84.517873][ T5437] __arm64_sys_linkat+0xe4/0x100 [ 84.518728][ T5437] invoke_syscall+0x98/0x2b0 [ 84.519547][ T5437] el0_svc_common+0x138/0x258 [ 84.520377][ T5437] do_el0_svc+0x58/0x13c [ 84.521198][ T5437] el0_svc+0x78/0x1d0 [ 84.521873][ T5437] el0t_64_sync_handler+0xcc/0xe4 [ 84.522728][ T5437] el0t_64_sync+0x1a0/0x1a4 [ 84.523489][ T5437] irq event stamp: 79980 [ 84.524224][ T5437] hardirqs last enabled at (79979): [] __up_console_sem+0xb4/0xfc [ 84.525902][ T5437] hardirqs last disabled at (79980): [] el1_dbg+0x24/0x80 [ 84.527555][ T5437] softirqs last enabled at (79960): [] handle_softirqs+0xa40/0xbe4 [ 84.529213][ T5437] softirqs last disabled at (79943): [] __irq_exit_rcu+0x240/0x43c [ 84.530857][ T5437] ---[ end trace 4bff21fd228f5f1e ]--- [ 84.532512][ T5437] BTRFS: error (device loop0) in btrfs_add_link:6776: errno=-12 Out of memory [ 84.534187][ T5437] BTRFS info (device loop0): forced readonly [ 84.703294][ T5459] loop0: detected capacity change from 0 to 32768 [ 84.753181][ T5459] BTRFS: device fsid ed167579-eb65-4e76-9a50-61ac97e9b59d devid 1 transid 8 /dev/loop0 scanned by syz.0.39 (5459) [ 84.756654][ T5459] BTRFS info (device loop0): using sha256 (sha256-ce) checksum algorithm [ 84.758194][ T5459] BTRFS info (device loop0): metadata ratio 1025 [ 84.759294][ T5459] BTRFS info (device loop0): doing ref verification [ 84.760376][ T5459] BTRFS info (device loop0): force clearing of disk cache [ 84.761624][ T5459] BTRFS info (device loop0): turning off barriers [ 84.762801][ T5459] BTRFS info (device loop0): setting nodatacow, compression disabled [ 84.764189][ T5459] BTRFS info (device loop0): enabling ssd optimizations [ 84.765364][ T5459] BTRFS info (device loop0): using spread ssd allocation scheme [ 84.783231][ T5459] FAULT_INJECTION: forcing a failure. [ 84.783231][ T5459] name failslab, interval 1, probability 0, space 0, times 0 [ 84.785424][ T5459] CPU: 0 PID: 5459 Comm: syz.0.39 Tainted: G W syzkaller #0 [ 84.786931][ T5459] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/18/2026 [ 84.788732][ T5459] Call trace: [ 84.789283][ T5459] dump_backtrace+0x0/0x458 [ 84.790000][ T5459] show_stack+0x2c/0x3c [ 84.790729][ T5459] __dump_stack+0x30/0x40 [ 84.791472][ T5459] dump_stack_lvl+0xf4/0x15c [ 84.792273][ T5459] dump_stack+0x1c/0x5c [ 84.792981][ T5459] should_fail+0x3bc/0x514 [ 84.793724][ T5459] __should_failslab+0xbc/0x10c [ 84.794564][ T5459] should_failslab+0x10/0x28 [ 84.795363][ T5459] slab_pre_alloc_hook+0x64/0xe8 [ 84.796173][ T5459] kmem_cache_alloc+0x94/0x3d4 [ 84.796987][ T5459] btrfs_alloc_path+0x5c/0x68 [ 84.797792][ T5459] btrfs_insert_dir_item+0x184/0x3e8 [ 84.798691][ T5459] btrfs_add_link+0x2b0/0xa9c [ 84.799476][ T5459] btrfs_link+0x3a4/0x694 [ 84.800163][ T5459] vfs_link+0x5b4/0x744 [ 84.800845][ T5459] do_linkat+0x258/0x750 [ 84.801600][ T5459] __arm64_sys_linkat+0xe4/0x100 [ 84.802429][ T5459] invoke_syscall+0x98/0x2b0 [ 84.803204][ T5459] el0_svc_common+0x138/0x258 [ 84.804042][ T5459] do_el0_svc+0x58/0x13c [ 84.804836][ T5459] el0_svc+0x78/0x1d0 [ 84.805475][ T5459] el0t_64_sync_handler+0xcc/0xe4 [ 84.806232][ T5459] el0t_64_sync+0x1a0/0x1a4 [ 84.807721][ T5459] ------------[ cut here ]------------ [ 84.808708][ T5459] WARNING: CPU: 0 PID: 5459 at fs/btrfs/inode.c:6776 btrfs_add_link+0x718/0xa9c [ 84.810191][ T5459] Modules linked in: [ 84.810811][ T5459] CPU: 0 PID: 5459 Comm: syz.0.39 Tainted: G W syzkaller #0 [ 84.812163][ T5459] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/18/2026 [ 84.813721][ T5459] pstate: 62400005 (nZCv daif +PAN -UAO +TCO -DIT -SSBS BTYPE=--) [ 84.815027][ T5459] pc : btrfs_add_link+0x718/0xa9c [ 84.815896][ T5459] lr : btrfs_add_link+0x718/0xa9c [ 84.816773][ T5459] sp : ffff800021b479e0 [ 84.817516][ T5459] x29: ffff800021b47ae0 x28: ffff0000de1dfbb0 x27: 0000000000000107 [ 84.818909][ T5459] x26: 00000000fffffff4 x25: 0000000000000001 x24: dfff800000000000 [ 84.820302][ T5459] x23: 0000000000000005 x22: 1fffe0001bc3bf81 x21: ffff700004368f44 [ 84.821733][ T5459] x20: 00000000fffffff4 x19: ffff0000de1dfc08 x18: 0000000000000001 [ 84.823146][ T5459] x17: 0000000000000000 x16: ffff80001125f77c x15: 00000000ffffffff [ 84.824459][ T5459] x14: 0000000000000001 x13: 1fffe000341f05ab x12: 0000000000ff0100 [ 84.825804][ T5459] x11: 0000000000000000 x10: 0000000000000000 x9 : 87058e3b0cf0fd00 [ 84.827175][ T5459] x8 : 87058e3b0cf0fd00 x7 : 0000000000000001 x6 : 0000000000000001 [ 84.828547][ T5459] x5 : ffff800021b472f8 x4 : ffff80001437f3e0 x3 : ffff80000850932c [ 84.829937][ T5459] x2 : 0000000000000001 x1 : 0000000100000000 x0 : 0000000000000026 [ 84.831333][ T5459] Call trace: [ 84.831867][ T5459] btrfs_add_link+0x718/0xa9c [ 84.832643][ T5459] btrfs_link+0x3a4/0x694 [ 84.833427][ T5459] vfs_link+0x5b4/0x744 [ 84.834128][ T5459] do_linkat+0x258/0x750 [ 84.834831][ T5459] __arm64_sys_linkat+0xe4/0x100 [ 84.835661][ T5459] invoke_syscall+0x98/0x2b0 [ 84.836397][ T5459] el0_svc_common+0x138/0x258 [ 84.837174][ T5459] do_el0_svc+0x58/0x13c [ 84.837885][ T5459] el0_svc+0x78/0x1d0 [ 84.838545][ T5459] el0t_64_sync_handler+0xcc/0xe4 [ 84.839379][ T5459] el0t_64_sync+0x1a0/0x1a4 [ 84.840175][ T5459] irq event stamp: 80478 [ 84.840924][ T5459] hardirqs last enabled at (80477): [] __up_console_sem+0xb4/0xfc [ 84.842518][ T5459] hardirqs last disabled at (80478): [] el1_dbg+0x24/0x80 [ 84.844032][ T5459] softirqs last enabled at (80458): [] handle_softirqs+0xa40/0xbe4 [ 84.845574][ T5459] softirqs last disabled at (80445): [] __irq_exit_rcu+0x240/0x43c [ 84.847171][ T5459] ---[ end trace 4bff21fd228f5f1f ]--- [ 84.848607][ T5459] BTRFS: error (device loop0) in btrfs_add_link:6776: errno=-12 Out of memory [ 85.017444][ T5481] loop0: detected capacity change from 0 to 32768 [ 85.058115][ T5481] BTRFS: device fsid ed167579-eb65-4e76-9a50-61ac97e9b59d devid 1 transid 8 /dev/loop0 scanned by syz.0.40 (5481) [ 85.087255][ T5481] FAULT_INJECTION: forcing a failure. [ 85.087255][ T5481] name failslab, interval 1, probability 0, space 0, times 0 [ 85.089519][ T5481] CPU: 1 PID: 5481 Comm: syz.0.40 Tainted: G W syzkaller #0 [ 85.090939][ T5481] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/18/2026 [ 85.092597][ T5481] Call trace: [ 85.093130][ T5481] dump_backtrace+0x0/0x458 [ 85.093906][ T5481] show_stack+0x2c/0x3c [ 85.094575][ T5481] __dump_stack+0x30/0x40 [ 85.095260][ T5481] dump_stack_lvl+0xf4/0x15c [ 85.096068][ T5481] dump_stack+0x1c/0x5c [ 85.096681][ T5481] should_fail+0x3bc/0x514 [ 85.097427][ T5481] __should_failslab+0xbc/0x10c [ 85.098280][ T5481] should_failslab+0x10/0x28 [ 85.099077][ T5481] slab_pre_alloc_hook+0x64/0xe8 [ 85.099905][ T5481] kmem_cache_alloc+0x94/0x3d4 [ 85.100718][ T5481] btrfs_alloc_path+0x5c/0x68 [ 85.101513][ T5481] btrfs_insert_inode_ref+0xf0/0xa2c [ 85.102389][ T5481] btrfs_add_link+0x248/0xa9c [ 85.103147][ T5481] btrfs_link+0x3a4/0x694 [ 85.103835][ T5481] vfs_link+0x5b4/0x744 [ 85.104519][ T5481] do_linkat+0x258/0x750 [ 85.105237][ T5481] __arm64_sys_linkat+0xe4/0x100 [ 85.106099][ T5481] invoke_syscall+0x98/0x2b0 [ 85.106858][ T5481] el0_svc_common+0x138/0x258 [ 85.107715][ T5481] do_el0_svc+0x58/0x13c [ 85.108462][ T5481] el0_svc+0x78/0x1d0 [ 85.109195][ T5481] el0t_64_sync_handler+0xcc/0xe4 [ 85.110111][ T5481] el0t_64_sync+0x1a0/0x1a4 [ 85.251783][ T5503] loop0: detected capacity change from 0 to 32768 [ 85.278401][ T5503] BTRFS: device fsid ed167579-eb65-4e76-9a50-61ac97e9b59d devid 1 transid 8 /dev/loop0 scanned by syz.0.41 (5503) [ 85.303167][ T5503] FAULT_INJECTION: forcing a failure. [ 85.303167][ T5503] name failslab, interval 1, probability 0, space 0, times 0 [ 85.305340][ T5503] CPU: 1 PID: 5503 Comm: syz.0.41 Tainted: G W syzkaller #0 [ 85.306785][ T5503] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/18/2026 [ 85.308551][ T5503] Call trace: [ 85.309128][ T5503] dump_backtrace+0x0/0x458 [ 85.309905][ T5503] show_stack+0x2c/0x3c [ 85.310627][ T5503] __dump_stack+0x30/0x40 [ 85.311309][ T5503] dump_stack_lvl+0xf4/0x15c [ 85.312049][ T5503] dump_stack+0x1c/0x5c [ 85.312737][ T5503] should_fail+0x3bc/0x514 [ 85.313451][ T5503] __should_failslab+0xbc/0x10c [ 85.314281][ T5503] should_failslab+0x10/0x28 [ 85.315088][ T5503] slab_pre_alloc_hook+0x64/0xe8 [ 85.315923][ T5503] kmem_cache_alloc+0x94/0x3d4 [ 85.316727][ T5503] btrfs_alloc_path+0x5c/0x68 [ 85.317526][ T5503] btrfs_insert_dir_item+0x184/0x3e8 [ 85.318414][ T5503] btrfs_add_link+0x2b0/0xa9c [ 85.319190][ T5503] btrfs_link+0x3a4/0x694 [ 85.319978][ T5503] vfs_link+0x5b4/0x744 [ 85.320701][ T5503] do_linkat+0x258/0x750 [ 85.321451][ T5503] __arm64_sys_linkat+0xe4/0x100 [ 85.322278][ T5503] invoke_syscall+0x98/0x2b0 [ 85.323076][ T5503] el0_svc_common+0x138/0x258 [ 85.323841][ T5503] do_el0_svc+0x58/0x13c [ 85.324501][ T5503] el0_svc+0x78/0x1d0 [ 85.325166][ T5503] el0t_64_sync_handler+0xcc/0xe4 [ 85.326029][ T5503] el0t_64_sync+0x1a0/0x1a4 [ 85.327765][ T5503] ------------[ cut here ]------------ [ 85.328735][ T5503] WARNING: CPU: 1 PID: 5503 at fs/btrfs/inode.c:6776 btrfs_add_link+0x718/0xa9c [ 85.330148][ T5503] Modules linked in: [ 85.330828][ T5503] CPU: 1 PID: 5503 Comm: syz.0.41 Tainted: G W syzkaller #0 [ 85.332188][ T5503] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/18/2026 [ 85.333771][ T5503] pstate: 62400005 (nZCv daif +PAN -UAO +TCO -DIT -SSBS BTYPE=--) [ 85.335069][ T5503] pc : btrfs_add_link+0x718/0xa9c [ 85.335890][ T5503] lr : btrfs_add_link+0x718/0xa9c [ 85.336696][ T5503] sp : ffff8000220479e0 [ 85.337381][ T5503] x29: ffff800022047ae0 x28: ffff0000de1a9840 x27: 0000000000000107 [ 85.338706][ T5503] x26: 00000000fffffff4 x25: 0000000000000001 x24: dfff800000000000 [ 85.340002][ T5503] x23: 0000000000000005 x22: 1fffe0001bc35313 x21: ffff700004408f44 [ 85.341314][ T5503] x20: 00000000fffffff4 x19: ffff0000de1a9898 x18: 0000000000000001 [ 85.342595][ T5503] x17: 0000000000000000 x16: ffff80001125f77c x15: 00000000ffffffff [ 85.343953][ T5503] x14: 0000000000000001 x13: 1fffe000341f47ab x12: 0000000000ff0100 [ 85.345314][ T5503] x11: 0000000000000000 x10: 0000000000000000 x9 : 326f0ddb5a33a800 [ 85.346674][ T5503] x8 : 326f0ddb5a33a800 x7 : 0000000000000001 x6 : 0000000000000001 [ 85.347974][ T5503] x5 : ffff8000220472f8 x4 : ffff80001437f3e0 x3 : ffff80000850932c [ 85.349251][ T5503] x2 : 0000000000000001 x1 : 0000000100000000 x0 : 0000000000000026 [ 85.350584][ T5503] Call trace: [ 85.351092][ T5503] btrfs_add_link+0x718/0xa9c [ 85.351841][ T5503] btrfs_link+0x3a4/0x694 [ 85.352650][ T5503] vfs_link+0x5b4/0x744 [ 85.353351][ T5503] do_linkat+0x258/0x750 [ 85.354047][ T5503] __arm64_sys_linkat+0xe4/0x100 [ 85.354853][ T5503] invoke_syscall+0x98/0x2b0 [ 85.355656][ T5503] el0_svc_common+0x138/0x258 [ 85.356455][ T5503] do_el0_svc+0x58/0x13c [ 85.357168][ T5503] el0_svc+0x78/0x1d0 [ 85.357830][ T5503] el0t_64_sync_handler+0xcc/0xe4 [ 85.358674][ T5503] el0t_64_sync+0x1a0/0x1a4 [ 85.359419][ T5503] irq event stamp: 80660 [ 85.360124][ T5503] hardirqs last enabled at (80659): [] __up_console_sem+0xb4/0xfc [ 85.361737][ T5503] hardirqs last disabled at (80660): [] el1_dbg+0x24/0x80 [ 85.363171][ T5503] softirqs last enabled at (80640): [] handle_softirqs+0xa40/0xbe4 [ 85.364766][ T5503] softirqs last disabled at (80593): [] __irq_exit_rcu+0x240/0x43c [ 85.366419][ T5503] ---[ end trace 4bff21fd228f5f20 ]--- [ 85.368519][ T5503] BTRFS: error (device loop0) in btrfs_add_link:6776: errno=-12 Out of memory [ 85.499485][ T5525] loop0: detected capacity change from 0 to 32768 [ 85.538115][ T5525] BTRFS: device fsid ed167579-eb65-4e76-9a50-61ac97e9b59d devid 1 transid 8 /dev/loop0 scanned by syz.0.42 (5525) [ 85.592756][ T5525] FAULT_INJECTION: forcing a failure. [ 85.592756][ T5525] name failslab, interval 1, probability 0, space 0, times 0 [ 85.594989][ T5525] CPU: 1 PID: 5525 Comm: syz.0.42 Tainted: G W syzkaller #0 [ 85.596485][ T5525] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/18/2026 [ 85.598240][ T5525] Call trace: [ 85.598798][ T5525] dump_backtrace+0x0/0x458 [ 85.599627][ T5525] show_stack+0x2c/0x3c [ 85.600310][ T5525] __dump_stack+0x30/0x40 [ 85.601091][ T5525] dump_stack_lvl+0xf4/0x15c [ 85.601940][ T5525] dump_stack+0x1c/0x5c [ 85.602705][ T5525] should_fail+0x3bc/0x514 [ 85.603463][ T5525] __should_failslab+0xbc/0x10c [ 85.604267][ T5525] should_failslab+0x10/0x28 [ 85.605020][ T5525] slab_pre_alloc_hook+0x64/0xe8 [ 85.605863][ T5525] kmem_cache_alloc+0x94/0x3d4 [ 85.606731][ T5525] start_transaction+0x4d0/0x13ec [ 85.607583][ T5525] btrfs_start_transaction+0x34/0x44 [ 85.608508][ T5525] btrfs_link+0x1f0/0x694 [ 85.609285][ T5525] vfs_link+0x5b4/0x744 [ 85.609995][ T5525] do_linkat+0x258/0x750 [ 85.610743][ T5525] __arm64_sys_linkat+0xe4/0x100 [ 85.611538][ T5525] invoke_syscall+0x98/0x2b0 [ 85.612360][ T5525] el0_svc_common+0x138/0x258 [ 85.613118][ T5525] do_el0_svc+0x58/0x13c [ 85.613855][ T5525] el0_svc+0x78/0x1d0 [ 85.614552][ T5525] el0t_64_sync_handler+0xcc/0xe4 [ 85.615442][ T5525] el0t_64_sync+0x1a0/0x1a4 [ 85.767805][ T5547] loop0: detected capacity change from 0 to 32768 [ 85.858242][ T5547] BTRFS: device fsid ed167579-eb65-4e76-9a50-61ac97e9b59d devid 1 transid 8 /dev/loop0 scanned by syz.0.43 (5547) [ 85.930738][ T5547] FAULT_INJECTION: forcing a failure. [ 85.930738][ T5547] name failslab, interval 1, probability 0, space 0, times 0 [ 85.933010][ T5547] CPU: 0 PID: 5547 Comm: syz.0.43 Tainted: G W syzkaller #0 [ 85.934509][ T5547] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/18/2026 [ 85.936266][ T5547] Call trace: [ 85.936789][ T5547] dump_backtrace+0x0/0x458 [ 85.937532][ T5547] show_stack+0x2c/0x3c [ 85.938302][ T5547] __dump_stack+0x30/0x40 [ 85.939046][ T5547] dump_stack_lvl+0xf4/0x15c [ 85.939888][ T5547] dump_stack+0x1c/0x5c [ 85.940613][ T5547] should_fail+0x3bc/0x514 [ 85.941333][ T5547] __should_failslab+0xbc/0x10c [ 85.942136][ T5547] should_failslab+0x10/0x28 [ 85.942955][ T5547] slab_pre_alloc_hook+0x64/0xe8 [ 85.943824][ T5547] kmem_cache_alloc+0x94/0x3d4 [ 85.944643][ T5547] btrfs_alloc_path+0x5c/0x68 [ 85.945436][ T5547] btrfs_insert_dir_item+0x184/0x3e8 [ 85.946351][ T5547] btrfs_add_link+0x2b0/0xa9c [ 85.947116][ T5547] btrfs_link+0x3a4/0x694 [ 85.947798][ T5547] vfs_link+0x5b4/0x744 [ 85.948436][ T5547] do_linkat+0x258/0x750 [ 85.949142][ T5547] __arm64_sys_linkat+0xe4/0x100 [ 85.949991][ T5547] invoke_syscall+0x98/0x2b0 [ 85.950785][ T5547] el0_svc_common+0x138/0x258 [ 85.951669][ T5547] do_el0_svc+0x58/0x13c [ 85.952367][ T5547] el0_svc+0x78/0x1d0 [ 85.953084][ T5547] el0t_64_sync_handler+0xcc/0xe4 [ 85.954030][ T5547] el0t_64_sync+0x1a0/0x1a4 [ 85.955503][ T5547] ------------[ cut here ]------------ [ 85.956516][ T5547] WARNING: CPU: 0 PID: 5547 at fs/btrfs/inode.c:6776 btrfs_add_link+0x718/0xa9c [ 85.958011][ T5547] Modules linked in: [ 85.958650][ T5547] CPU: 0 PID: 5547 Comm: syz.0.43 Tainted: G W syzkaller #0 [ 85.960013][ T5547] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/18/2026 [ 85.961768][ T5547] pstate: 62400005 (nZCv daif +PAN -UAO +TCO -DIT -SSBS BTYPE=--) [ 85.963030][ T5547] pc : btrfs_add_link+0x718/0xa9c [ 85.963827][ T5547] lr : btrfs_add_link+0x718/0xa9c [ 85.964644][ T5547] sp : ffff8000222b79e0 [ 85.965315][ T5547] x29: ffff8000222b7ae0 x28: ffff0000de1dfa50 x27: 0000000000000107 [ 85.966607][ T5547] x26: 00000000fffffff4 x25: 0000000000000001 x24: dfff800000000000 [ 85.967928][ T5547] x23: 0000000000000005 x22: 1fffe0001bc3bf55 x21: ffff700004456f44 [ 85.969247][ T5547] x20: 00000000fffffff4 x19: ffff0000de1dfaa8 x18: 0000000000000001 [ 85.970647][ T5547] x17: 0000000000000000 x16: ffff80001125f77c x15: 00000000ffffffff [ 85.972090][ T5547] x14: 0000000000000001 x13: 1fffe000341f05ab x12: 0000000000ff0100 [ 85.973430][ T5547] x11: 0000000000000000 x10: 0000000000000000 x9 : 5424100ad68e0100 [ 85.974839][ T5547] x8 : 5424100ad68e0100 x7 : 0000000000000001 x6 : 0000000000000001 [ 85.976290][ T5547] x5 : ffff8000222b72f8 x4 : ffff80001437f3e0 x3 : ffff80000850932c [ 85.977714][ T5547] x2 : 0000000000000001 x1 : 0000000100000000 x0 : 0000000000000026 [ 85.979070][ T5547] Call trace: [ 85.979610][ T5547] btrfs_add_link+0x718/0xa9c [ 85.980430][ T5547] btrfs_link+0x3a4/0x694 [ 85.981165][ T5547] vfs_link+0x5b4/0x744 [ 85.981878][ T5547] do_linkat+0x258/0x750 [ 85.982603][ T5547] __arm64_sys_linkat+0xe4/0x100 [ 85.983439][ T5547] invoke_syscall+0x98/0x2b0 [ 85.984249][ T5547] el0_svc_common+0x138/0x258 [ 85.985051][ T5547] do_el0_svc+0x58/0x13c [ 85.985737][ T5547] el0_svc+0x78/0x1d0 [ 85.986469][ T5547] el0t_64_sync_handler+0xcc/0xe4 [ 85.987327][ T5547] el0t_64_sync+0x1a0/0x1a4 [ 85.988101][ T5547] irq event stamp: 79492 [ 85.988846][ T5547] hardirqs last enabled at (79491): [] __up_console_sem+0xb4/0xfc [ 85.990551][ T5547] hardirqs last disabled at (79492): [] el1_dbg+0x24/0x80 [ 85.991970][ T5547] softirqs last enabled at (79472): [] handle_softirqs+0xa40/0xbe4 [ 85.993598][ T5547] softirqs last disabled at (79429): [] __irq_exit_rcu+0x240/0x43c [ 85.995184][ T5547] ---[ end trace 4bff21fd228f5f21 ]--- [ 85.996817][ T5547] BTRFS: error (device loop0) in btrfs_add_link:6776: errno=-12 Out of memory [ 86.189508][ T5569] BTRFS: device fsid ed167579-eb65-4e76-9a50-61ac97e9b59d devid 1 transid 8 /dev/loop0 scanned by syz.0.44 (5569) [ 86.215203][ T5569] FAULT_INJECTION: forcing a failure. [ 86.215203][ T5569] name failslab, interval 1, probability 0, space 0, times 0 [ 86.217675][ T5569] CPU: 1 PID: 5569 Comm: syz.0.44 Tainted: G W syzkaller #0 [ 86.219023][ T5569] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/18/2026 [ 86.220784][ T5569] Call trace: [ 86.221315][ T5569] dump_backtrace+0x0/0x458 [ 86.222089][ T5569] show_stack+0x2c/0x3c [ 86.222769][ T5569] __dump_stack+0x30/0x40 [ 86.223497][ T5569] dump_stack_lvl+0xf4/0x15c [ 86.224227][ T5569] dump_stack+0x1c/0x5c [ 86.224943][ T5569] should_fail+0x3bc/0x514 [ 86.225688][ T5569] __should_failslab+0xbc/0x10c [ 86.226509][ T5569] should_failslab+0x10/0x28 [ 86.227269][ T5569] slab_pre_alloc_hook+0x64/0xe8 [ 86.228119][ T5569] kmem_cache_alloc+0x94/0x3d4 [ 86.228955][ T5569] btrfs_alloc_path+0x5c/0x68 [ 86.229749][ T5569] btrfs_insert_inode_ref+0xf0/0xa2c [ 86.230612][ T5569] btrfs_add_link+0x248/0xa9c [ 86.231380][ T5569] btrfs_link+0x3a4/0x694 [ 86.232124][ T5569] vfs_link+0x5b4/0x744 [ 86.232823][ T5569] do_linkat+0x258/0x750 [ 86.233551][ T5569] __arm64_sys_linkat+0xe4/0x100 [ 86.234404][ T5569] invoke_syscall+0x98/0x2b0 [ 86.235173][ T5569] el0_svc_common+0x138/0x258 [ 86.235975][ T5569] do_el0_svc+0x58/0x13c [ 86.236638][ T5569] el0_svc+0x78/0x1d0 [ 86.237268][ T5569] el0t_64_sync_handler+0xcc/0xe4 [ 86.238163][ T5569] el0t_64_sync+0x1a0/0x1a4 [ 86.272479][ T4946] BTRFS: device fsid ed167579-eb65-4e76-9a50-61ac97e9b59d devid 1 transid 12 /dev/loop0 scanned by udevd (4946) [ 86.391539][ T5591] FAULT_INJECTION: forcing a failure. [ 86.391539][ T5591] name failslab, interval 1, probability 0, space 0, times 0 [ 86.393799][ T5591] CPU: 0 PID: 5591 Comm: syz.0.45 Tainted: G W syzkaller #0 [ 86.395281][ T5591] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/18/2026 [ 86.396902][ T5591] Call trace: [ 86.397475][ T5591] dump_backtrace+0x0/0x458 [ 86.398227][ T5591] show_stack+0x2c/0x3c [ 86.398968][ T5591] __dump_stack+0x30/0x40 [ 86.399722][ T5591] dump_stack_lvl+0xf4/0x15c [ 86.400550][ T5591] dump_stack+0x1c/0x5c [ 86.401268][ T5591] should_fail+0x3bc/0x514 [ 86.401973][ T5591] __should_failslab+0xbc/0x10c [ 86.402831][ T5591] should_failslab+0x10/0x28 [ 86.403555][ T5591] slab_pre_alloc_hook+0x64/0xe8 [ 86.404391][ T5591] kmem_cache_alloc+0x94/0x3d4 [ 86.405191][ T5591] btrfs_alloc_path+0x5c/0x68 [ 86.405956][ T5591] btrfs_insert_dir_item+0x184/0x3e8 [ 86.406884][ T5591] btrfs_add_link+0x2b0/0xa9c [ 86.407670][ T5591] btrfs_link+0x3a4/0x694 [ 86.408386][ T5591] vfs_link+0x5b4/0x744 [ 86.409112][ T5591] do_linkat+0x258/0x750 [ 86.409842][ T5591] __arm64_sys_linkat+0xe4/0x100 [ 86.410709][ T5591] invoke_syscall+0x98/0x2b0 [ 86.411539][ T5591] el0_svc_common+0x138/0x258 [ 86.412318][ T5591] do_el0_svc+0x58/0x13c [ 86.413054][ T5591] el0_svc+0x78/0x1d0 [ 86.413722][ T5591] el0t_64_sync_handler+0xcc/0xe4 [ 86.414644][ T5591] el0t_64_sync+0x1a0/0x1a4 [ 86.416787][ T5591] ------------[ cut here ]------------ [ 86.418358][ T5591] WARNING: CPU: 0 PID: 5591 at fs/btrfs/inode.c:6776 btrfs_add_link+0x718/0xa9c [ 86.419773][ T5591] Modules linked in: [ 86.420401][ T5591] CPU: 0 PID: 5591 Comm: syz.0.45 Tainted: G W syzkaller #0 [ 86.421815][ T5591] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/18/2026 [ 86.423515][ T5591] pstate: 62400005 (nZCv daif +PAN -UAO +TCO -DIT -SSBS BTYPE=--) [ 86.424809][ T5591] pc : btrfs_add_link+0x718/0xa9c [ 86.425651][ T5591] lr : btrfs_add_link+0x718/0xa9c [ 86.426458][ T5591] sp : ffff8000226779e0 [ 86.427089][ T5591] x29: ffff800022677ae0 x28: ffff0000de1df580 x27: 0000000000000107 [ 86.428410][ T5591] x26: 00000000fffffff4 x25: 0000000000000001 x24: dfff800000000000 [ 86.429731][ T5591] x23: 0000000000000005 x22: 1fffe0001bc3bebb x21: ffff7000044cef44 [ 86.431128][ T5591] x20: 00000000fffffff4 x19: ffff0000de1df5d8 x18: 0000000000000001 [ 86.432461][ T5591] x17: 0000000000000000 x16: ffff80001125f77c x15: 00000000ffffffff [ 86.433770][ T5591] x14: 0000000000000001 x13: 1fffe000341f05ab x12: 0000000000ff0100 [ 86.435076][ T5591] x11: 0000000000000000 x10: 0000000000000000 x9 : c43fd2629167ba00 [ 86.436431][ T5591] x8 : c43fd2629167ba00 x7 : 0000000000000001 x6 : 0000000000000001 [ 86.437774][ T5591] x5 : ffff8000226772f8 x4 : ffff80001437f3e0 x3 : ffff80000850932c [ 86.439069][ T5591] x2 : 0000000000000001 x1 : 0000000100000000 x0 : 0000000000000026 [ 86.440341][ T5591] Call trace: [ 86.440872][ T5591] btrfs_add_link+0x718/0xa9c [ 86.441666][ T5591] btrfs_link+0x3a4/0x694 [ 86.442407][ T5591] vfs_link+0x5b4/0x744 [ 86.443038][ T5591] do_linkat+0x258/0x750 [ 86.443773][ T5591] __arm64_sys_linkat+0xe4/0x100 [ 86.444632][ T5591] invoke_syscall+0x98/0x2b0 [ 86.445399][ T5591] el0_svc_common+0x138/0x258 [ 86.446156][ T5591] do_el0_svc+0x58/0x13c [ 86.446887][ T5591] el0_svc+0x78/0x1d0 [ 86.447546][ T5591] el0t_64_sync_handler+0xcc/0xe4 [ 86.448406][ T5591] el0t_64_sync+0x1a0/0x1a4 [ 86.449191][ T5591] irq event stamp: 80028 [ 86.449923][ T5591] hardirqs last enabled at (80027): [] __up_console_sem+0xb4/0xfc [ 86.451564][ T5591] hardirqs last disabled at (80028): [] el1_dbg+0x24/0x80 [ 86.453017][ T5591] softirqs last enabled at (80016): [] handle_softirqs+0xa40/0xbe4 [ 86.454599][ T5591] softirqs last disabled at (79699): [] __irq_exit_rcu+0x240/0x43c [ 86.456188][ T5591] ---[ end trace 4bff21fd228f5f22 ]--- [ 86.459192][ T5591] BTRFS: error (device loop0) in btrfs_add_link:6776: errno=-12 Out of memory [ 86.650884][ T5613] BTRFS: device fsid ed167579-eb65-4e76-9a50-61ac97e9b59d devid 1 transid 8 /dev/loop0 scanned by syz.0.46 (5613) [ 86.675713][ T5613] FAULT_INJECTION: forcing a failure. [ 86.675713][ T5613] name failslab, interval 1, probability 0, space 0, times 0 [ 86.677919][ T5613] CPU: 1 PID: 5613 Comm: syz.0.46 Tainted: G W syzkaller #0 [ 86.679281][ T5613] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/18/2026 [ 86.680841][ T5613] Call trace: [ 86.681400][ T5613] dump_backtrace+0x0/0x458 [ 86.682175][ T5613] show_stack+0x2c/0x3c [ 86.682855][ T5613] __dump_stack+0x30/0x40 [ 86.683570][ T5613] dump_stack_lvl+0xf4/0x15c [ 86.684270][ T5613] dump_stack+0x1c/0x5c [ 86.684963][ T5613] should_fail+0x3bc/0x514 [ 86.685740][ T5613] __should_failslab+0xbc/0x10c [ 86.686520][ T5613] should_failslab+0x10/0x28 [ 86.687308][ T5613] slab_pre_alloc_hook+0x64/0xe8 [ 86.688110][ T5613] kmem_cache_alloc+0x94/0x3d4 [ 86.688905][ T5613] btrfs_alloc_path+0x5c/0x68 [ 86.689671][ T5613] btrfs_insert_dir_item+0x184/0x3e8 [ 86.690613][ T5613] btrfs_add_link+0x2b0/0xa9c [ 86.691407][ T5613] btrfs_link+0x3a4/0x694 [ 86.692103][ T5613] vfs_link+0x5b4/0x744 [ 86.692803][ T5613] do_linkat+0x258/0x750 [ 86.693473][ T5613] __arm64_sys_linkat+0xe4/0x100 [ 86.694343][ T5613] invoke_syscall+0x98/0x2b0 [ 86.695116][ T5613] el0_svc_common+0x138/0x258 [ 86.695886][ T5613] do_el0_svc+0x58/0x13c [ 86.696648][ T5613] el0_svc+0x78/0x1d0 [ 86.697318][ T5613] el0t_64_sync_handler+0xcc/0xe4 [ 86.698180][ T5613] el0t_64_sync+0x1a0/0x1a4 [ 86.700913][ T5613] ------------[ cut here ]------------ [ 86.701910][ T5613] WARNING: CPU: 1 PID: 5613 at fs/btrfs/inode.c:6776 btrfs_add_link+0x718/0xa9c [ 86.703321][ T5613] Modules linked in: [ 86.703926][ T5613] CPU: 1 PID: 5613 Comm: syz.0.46 Tainted: G W syzkaller #0 [ 86.705233][ T5613] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/18/2026 [ 86.706816][ T5613] pstate: 62400005 (nZCv daif +PAN -UAO +TCO -DIT -SSBS BTYPE=--) [ 86.708094][ T5613] pc : btrfs_add_link+0x718/0xa9c [ 86.708951][ T5613] lr : btrfs_add_link+0x718/0xa9c [ 86.709826][ T5613] sp : ffff8000226779e0 [ 86.710538][ T5613] x29: ffff800022677ae0 x28: ffff0000de1f50b0 x27: 0000000000000107 [ 86.711964][ T5613] x26: 00000000fffffff4 x25: 0000000000000001 x24: dfff800000000000 [ 86.713359][ T5613] x23: 0000000000000005 x22: 1fffe0001bc3ea21 x21: ffff7000044cef44 [ 86.714776][ T5613] x20: 00000000fffffff4 x19: ffff0000de1f5108 x18: 0000000000000001 [ 86.716163][ T5613] x17: 0000000000000000 x16: ffff80001125f77c x15: 00000000ffffffff [ 86.717542][ T5613] x14: 0000000000000001 x13: 1fffe000341f47ab x12: 0000000000ff0100 [ 86.718939][ T5613] x11: 0000000000000000 x10: 0000000000000000 x9 : 3ea00a8a2cf90b00 [ 86.720367][ T5613] x8 : 3ea00a8a2cf90b00 x7 : 0000000000000001 x6 : 0000000000000001 [ 86.721782][ T5613] x5 : ffff8000226772f8 x4 : ffff80001437f3e0 x3 : ffff80000850932c [ 86.723118][ T5613] x2 : 0000000000000001 x1 : 0000000100000000 x0 : 0000000000000026 [ 86.724451][ T5613] Call trace: [ 86.725010][ T5613] btrfs_add_link+0x718/0xa9c [ 86.725849][ T5613] btrfs_link+0x3a4/0x694 [ 86.726555][ T5613] vfs_link+0x5b4/0x744 [ 86.727233][ T5613] do_linkat+0x258/0x750 [ 86.727938][ T5613] __arm64_sys_linkat+0xe4/0x100 [ 86.728757][ T5613] invoke_syscall+0x98/0x2b0 [ 86.729513][ T5613] el0_svc_common+0x138/0x258 [ 86.730243][ T5613] do_el0_svc+0x58/0x13c [ 86.730935][ T5613] el0_svc+0x78/0x1d0 [ 86.731578][ T5613] el0t_64_sync_handler+0xcc/0xe4 [ 86.732491][ T5613] el0t_64_sync+0x1a0/0x1a4 [ 86.733298][ T5613] irq event stamp: 80082 [ 86.734015][ T5613] hardirqs last enabled at (80081): [] __up_console_sem+0xb4/0xfc [ 86.735604][ T5613] hardirqs last disabled at (80082): [] el1_dbg+0x24/0x80 [ 86.737134][ T5613] softirqs last enabled at (80062): [] handle_softirqs+0xa40/0xbe4 [ 86.738720][ T5613] softirqs last disabled at (80013): [] __irq_exit_rcu+0x240/0x43c [ 86.740408][ T5613] ---[ end trace 4bff21fd228f5f23 ]--- [ 86.742148][ T5613] BTRFS: error (device loop0) in btrfs_add_link:6776: errno=-12 Out of memory [ 86.981656][ T5635] BTRFS: device fsid ed167579-eb65-4e76-9a50-61ac97e9b59d devid 1 transid 8 /dev/loop0 scanned by syz.0.47 (5635) [ 87.001683][ T5635] FAULT_INJECTION: forcing a failure. [ 87.001683][ T5635] name failslab, interval 1, probability 0, space 0, times 0 [ 87.003797][ T5635] CPU: 1 PID: 5635 Comm: syz.0.47 Tainted: G W syzkaller #0 [ 87.005244][ T5635] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/18/2026 [ 87.007072][ T5635] Call trace: [ 87.007635][ T5635] dump_backtrace+0x0/0x458 [ 87.008423][ T5635] show_stack+0x2c/0x3c [ 87.009175][ T5635] __dump_stack+0x30/0x40 [ 87.009903][ T5635] dump_stack_lvl+0xf4/0x15c [ 87.010704][ T5635] dump_stack+0x1c/0x5c [ 87.011439][ T5635] should_fail+0x3bc/0x514 [ 87.012158][ T5635] __should_failslab+0xbc/0x10c [ 87.012969][ T5635] should_failslab+0x10/0x28 [ 87.013737][ T5635] slab_pre_alloc_hook+0x64/0xe8 [ 87.014551][ T5635] kmem_cache_alloc+0x94/0x3d4 [ 87.015337][ T5635] btrfs_alloc_path+0x5c/0x68 [ 87.016150][ T5635] btrfs_insert_dir_item+0x184/0x3e8 [ 87.017065][ T5635] btrfs_add_link+0x2b0/0xa9c [ 87.017893][ T5635] btrfs_link+0x3a4/0x694 [ 87.018645][ T5635] vfs_link+0x5b4/0x744 [ 87.019376][ T5635] do_linkat+0x258/0x750 [ 87.020092][ T5635] __arm64_sys_linkat+0xe4/0x100 [ 87.020874][ T5635] invoke_syscall+0x98/0x2b0 [ 87.021620][ T5635] el0_svc_common+0x138/0x258 [ 87.022457][ T5635] do_el0_svc+0x58/0x13c [ 87.023158][ T5635] el0_svc+0x78/0x1d0 [ 87.023865][ T5635] el0t_64_sync_handler+0xcc/0xe4 [ 87.024777][ T5635] el0t_64_sync+0x1a0/0x1a4 [ 87.026434][ T5635] ------------[ cut here ]------------ [ 87.028069][ T5635] WARNING: CPU: 1 PID: 5635 at fs/btrfs/inode.c:6776 btrfs_add_link+0x718/0xa9c [ 87.029452][ T5635] Modules linked in: [ 87.030116][ T5635] CPU: 1 PID: 5635 Comm: syz.0.47 Tainted: G W syzkaller #0 [ 87.031453][ T5635] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/18/2026 [ 87.033177][ T5635] pstate: 62400005 (nZCv daif +PAN -UAO +TCO -DIT -SSBS BTYPE=--) [ 87.034548][ T5635] pc : btrfs_add_link+0x718/0xa9c [ 87.035412][ T5635] lr : btrfs_add_link+0x718/0xa9c [ 87.036245][ T5635] sp : ffff8000226679e0 [ 87.036958][ T5635] x29: ffff800022667ae0 x28: ffff0000de1f5370 x27: 0000000000000107 [ 87.038370][ T5635] x26: 00000000fffffff4 x25: 0000000000000001 x24: dfff800000000000 [ 87.039722][ T5635] x23: 0000000000000005 x22: 1fffe0001bc3ea79 x21: ffff7000044ccf44 [ 87.041148][ T5635] x20: 00000000fffffff4 x19: ffff0000de1f53c8 x18: 0000000000000001 [ 87.042553][ T5635] x17: 0000000000000000 x16: ffff80001125f77c x15: 00000000ffffffff [ 87.043970][ T5635] x14: 0000000000000001 x13: 1fffe000341f47ab x12: 0000000000ff0100 [ 87.045327][ T5635] x11: 0000000000000000 x10: 0000000000000000 x9 : 9745ee754131ac00 [ 87.046693][ T5635] x8 : 9745ee754131ac00 x7 : 0000000000000001 x6 : 0000000000000001 [ 87.048129][ T5635] x5 : ffff8000226672f8 x4 : ffff80001437f3e0 x3 : ffff80000850932c [ 87.049497][ T5635] x2 : 0000000000000001 x1 : 0000000100000000 x0 : 0000000000000026 [ 87.050863][ T5635] Call trace: [ 87.051417][ T5635] btrfs_add_link+0x718/0xa9c [ 87.052173][ T5635] btrfs_link+0x3a4/0x694 [ 87.052899][ T5635] vfs_link+0x5b4/0x744 [ 87.053628][ T5635] do_linkat+0x258/0x750 [ 87.054320][ T5635] __arm64_sys_linkat+0xe4/0x100 [ 87.055219][ T5635] invoke_syscall+0x98/0x2b0 [ 87.056039][ T5635] el0_svc_common+0x138/0x258 [ 87.056804][ T5635] do_el0_svc+0x58/0x13c [ 87.057498][ T5635] el0_svc+0x78/0x1d0 [ 87.058182][ T5635] el0t_64_sync_handler+0xcc/0xe4 [ 87.059063][ T5635] el0t_64_sync+0x1a0/0x1a4 [ 87.059845][ T5635] irq event stamp: 79724 [ 87.060487][ T5635] hardirqs last enabled at (79723): [] __up_console_sem+0xb4/0xfc [ 87.061998][ T5635] hardirqs last disabled at (79724): [] el1_dbg+0x24/0x80 [ 87.063375][ T5635] softirqs last enabled at (79712): [] handle_softirqs+0xa40/0xbe4 [ 87.065051][ T5635] softirqs last disabled at (79673): [] __irq_exit_rcu+0x240/0x43c [ 87.066602][ T5635] ---[ end trace 4bff21fd228f5f24 ]--- [ 87.068397][ T5635] BTRFS: error (device loop0) in btrfs_add_link:6776: errno=-12 Out of memory [ 87.272098][ T5657] BTRFS: device fsid ed167579-eb65-4e76-9a50-61ac97e9b59d devid 1 transid 8 /dev/loop0 scanned by syz.0.48 (5657) [ 87.288660][ T5657] FAULT_INJECTION: forcing a failure. [ 87.288660][ T5657] name failslab, interval 1, probability 0, space 0, times 0 [ 87.290786][ T5657] CPU: 0 PID: 5657 Comm: syz.0.48 Tainted: G W syzkaller #0 [ 87.292226][ T5657] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/18/2026 [ 87.293894][ T5657] Call trace: [ 87.294410][ T5657] dump_backtrace+0x0/0x458 [ 87.295099][ T5657] show_stack+0x2c/0x3c [ 87.295749][ T5657] __dump_stack+0x30/0x40 [ 87.296474][ T5657] dump_stack_lvl+0xf4/0x15c [ 87.297211][ T5657] dump_stack+0x1c/0x5c [ 87.297871][ T5657] should_fail+0x3bc/0x514 [ 87.298559][ T5657] __should_failslab+0xbc/0x10c [ 87.299368][ T5657] should_failslab+0x10/0x28 [ 87.300146][ T5657] slab_pre_alloc_hook+0x64/0xe8 [ 87.301020][ T5657] kmem_cache_alloc+0x94/0x3d4 [ 87.301778][ T5657] btrfs_alloc_path+0x5c/0x68 [ 87.302557][ T5657] btrfs_insert_inode_ref+0xf0/0xa2c [ 87.303415][ T5657] btrfs_add_link+0x248/0xa9c [ 87.304161][ T5657] btrfs_link+0x3a4/0x694 [ 87.304903][ T5657] vfs_link+0x5b4/0x744 [ 87.305639][ T5657] do_linkat+0x258/0x750 [ 87.306387][ T5657] __arm64_sys_linkat+0xe4/0x100 [ 87.307202][ T5657] invoke_syscall+0x98/0x2b0 [ 87.308034][ T5657] el0_svc_common+0x138/0x258 [ 87.308809][ T5657] do_el0_svc+0x58/0x13c [ 87.309561][ T5657] el0_svc+0x78/0x1d0 [ 87.310241][ T5657] el0t_64_sync_handler+0xcc/0xe4 [ 87.311121][ T5657] el0t_64_sync+0x1a0/0x1a4 [ 87.351362][ T4946] BTRFS: device fsid ed167579-eb65-4e76-9a50-61ac97e9b59d devid 1 transid 12 /dev/loop0 scanned by udevd (4946) [ 87.561371][ T5678] FAULT_INJECTION: forcing a failure. [ 87.561371][ T5678] name failslab, interval 1, probability 0, space 0, times 0 [ 87.563462][ T5678] CPU: 0 PID: 5678 Comm: syz.0.49 Tainted: G W syzkaller #0 [ 87.564912][ T5678] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/18/2026 [ 87.566694][ T5678] Call trace: [ 87.567249][ T5678] dump_backtrace+0x0/0x458 [ 87.568048][ T5678] show_stack+0x2c/0x3c [ 87.568732][ T5678] __dump_stack+0x30/0x40 [ 87.569434][ T5678] dump_stack_lvl+0xf4/0x15c [ 87.570210][ T5678] dump_stack+0x1c/0x5c [ 87.570945][ T5678] should_fail+0x3bc/0x514 [ 87.571692][ T5678] __should_failslab+0xbc/0x10c [ 87.572496][ T5678] should_failslab+0x10/0x28 [ 87.573376][ T5678] slab_pre_alloc_hook+0x64/0xe8 [ 87.574170][ T5678] kmem_cache_alloc+0x94/0x3d4 [ 87.574971][ T5678] btrfs_alloc_path+0x5c/0x68 [ 87.575773][ T5678] btrfs_insert_inode_ref+0xf0/0xa2c [ 87.576713][ T5678] btrfs_add_link+0x248/0xa9c [ 87.577429][ T5678] btrfs_link+0x3a4/0x694 [ 87.578156][ T5678] vfs_link+0x5b4/0x744 [ 87.578851][ T5678] do_linkat+0x258/0x750 [ 87.579555][ T5678] __arm64_sys_linkat+0xe4/0x100 [ 87.580386][ T5678] invoke_syscall+0x98/0x2b0 [ 87.581174][ T5678] el0_svc_common+0x138/0x258 [ 87.581965][ T5678] do_el0_svc+0x58/0x13c [ 87.582690][ T5678] el0_svc+0x78/0x1d0 [ 87.583365][ T5678] el0t_64_sync_handler+0xcc/0xe4 [ 87.584178][ T5678] el0t_64_sync+0x1a0/0x1a4 [ 87.732993][ T5701] BTRFS: device fsid ed167579-eb65-4e76-9a50-61ac97e9b59d devid 1 transid 8 /dev/loop0 scanned by syz.0.50 (5701) [ 87.748027][ T5701] FAULT_INJECTION: forcing a failure. [ 87.748027][ T5701] name failslab, interval 1, probability 0, space 0, times 0 [ 87.749957][ T5701] CPU: 0 PID: 5701 Comm: syz.0.50 Tainted: G W syzkaller #0 [ 87.751281][ T5701] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/18/2026 [ 87.753029][ T5701] Call trace: [ 87.753597][ T5701] dump_backtrace+0x0/0x458 [ 87.754336][ T5701] show_stack+0x2c/0x3c [ 87.755038][ T5701] __dump_stack+0x30/0x40 [ 87.755729][ T5701] dump_stack_lvl+0xf4/0x15c [ 87.756482][ T5701] dump_stack+0x1c/0x5c [ 87.757166][ T5701] should_fail+0x3bc/0x514 [ 87.757960][ T5701] __should_failslab+0xbc/0x10c [ 87.758781][ T5701] should_failslab+0x10/0x28 [ 87.759560][ T5701] slab_pre_alloc_hook+0x64/0xe8 [ 87.760410][ T5701] kmem_cache_alloc+0x94/0x3d4 [ 87.761250][ T5701] btrfs_alloc_path+0x5c/0x68 [ 87.761987][ T5701] btrfs_insert_dir_item+0x184/0x3e8 [ 87.762951][ T5701] btrfs_add_link+0x2b0/0xa9c [ 87.763748][ T5701] btrfs_link+0x3a4/0x694 [ 87.764494][ T5701] vfs_link+0x5b4/0x744 [ 87.765189][ T5701] do_linkat+0x258/0x750 [ 87.765902][ T5701] __arm64_sys_linkat+0xe4/0x100 [ 87.766696][ T5701] invoke_syscall+0x98/0x2b0 [ 87.767484][ T5701] el0_svc_common+0x138/0x258 [ 87.768261][ T5701] do_el0_svc+0x58/0x13c [ 87.769053][ T5701] el0_svc+0x78/0x1d0 [ 87.769714][ T5701] el0t_64_sync_handler+0xcc/0xe4 [ 87.770522][ T5701] el0t_64_sync+0x1a0/0x1a4 [ 87.772125][ T5701] ------------[ cut here ]------------ [ 87.773110][ T5701] WARNING: CPU: 0 PID: 5701 at fs/btrfs/inode.c:6776 btrfs_add_link+0x718/0xa9c [ 87.774619][ T5701] Modules linked in: [ 87.775288][ T5701] CPU: 0 PID: 5701 Comm: syz.0.50 Tainted: G W syzkaller #0 [ 87.776701][ T5701] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/18/2026 [ 87.778305][ T5701] pstate: 62400005 (nZCv daif +PAN -UAO +TCO -DIT -SSBS BTYPE=--) [ 87.779598][ T5701] pc : btrfs_add_link+0x718/0xa9c [ 87.780426][ T5701] lr : btrfs_add_link+0x718/0xa9c [ 87.781328][ T5701] sp : ffff800022ec79e0 [ 87.782050][ T5701] x29: ffff800022ec7ae0 x28: ffff0000de1e6dc0 x27: 0000000000000107 [ 87.783412][ T5701] x26: 00000000fffffff4 x25: 0000000000000001 x24: dfff800000000000 [ 87.784785][ T5701] x23: 0000000000000005 x22: 1fffe0001bc3cdc3 x21: ffff7000045d8f44 [ 87.786119][ T5701] x20: 00000000fffffff4 x19: ffff0000de1e6e18 x18: 0000000000000001 [ 87.787546][ T5701] x17: 0000000000000000 x16: ffff80001125f77c x15: 00000000ffffffff [ 87.788911][ T5701] x14: 0000000000000001 x13: 1fffe000341f05ab x12: 0000000000ff0100 [ 87.790325][ T5701] x11: 0000000000000000 x10: 0000000000000000 x9 : e19901069b65a700 [ 87.791636][ T5701] x8 : e19901069b65a700 x7 : 0000000000000001 x6 : 0000000000000001 [ 87.793078][ T5701] x5 : ffff800022ec72f8 x4 : ffff80001437f3e0 x3 : ffff80000850932c [ 87.794525][ T5701] x2 : 0000000000000001 x1 : 0000000100000000 x0 : 0000000000000026 [ 87.795845][ T5701] Call trace: [ 87.796431][ T5701] btrfs_add_link+0x718/0xa9c [ 87.797198][ T5701] btrfs_link+0x3a4/0x694 [ 87.797944][ T5701] vfs_link+0x5b4/0x744 [ 87.798656][ T5701] do_linkat+0x258/0x750 [ 87.799419][ T5701] __arm64_sys_linkat+0xe4/0x100 [ 87.800307][ T5701] invoke_syscall+0x98/0x2b0 [ 87.801008][ T5701] el0_svc_common+0x138/0x258 [ 87.801737][ T5701] do_el0_svc+0x58/0x13c [ 87.802377][ T5701] el0_svc+0x78/0x1d0 [ 87.802994][ T5701] el0t_64_sync_handler+0xcc/0xe4 [ 87.803744][ T5701] el0t_64_sync+0x1a0/0x1a4 [ 87.804493][ T5701] irq event stamp: 80154 [ 87.805217][ T5701] hardirqs last enabled at (80153): [] __up_console_sem+0xb4/0xfc [ 87.806815][ T5701] hardirqs last disabled at (80154): [] el1_dbg+0x24/0x80 [ 87.808285][ T5701] softirqs last enabled at (80134): [] handle_softirqs+0xa40/0xbe4 [ 87.809782][ T5701] softirqs last disabled at (80085): [] __irq_exit_rcu+0x240/0x43c [ 87.811297][ T5701] ---[ end trace 4bff21fd228f5f25 ]--- [ 87.812501][ T5701] BTRFS: error (device loop0) in btrfs_add_link:6776: errno=-12 Out of memory [ 87.998220][ T5723] BTRFS: device fsid ed167579-eb65-4e76-9a50-61ac97e9b59d devid 1 transid 8 /dev/loop0 scanned by syz.0.51 (5723) [ 88.052770][ T5723] FAULT_INJECTION: forcing a failure. [ 88.052770][ T5723] name failslab, interval 1, probability 0, space 0, times 0 [ 88.055008][ T5723] CPU: 0 PID: 5723 Comm: syz.0.51 Tainted: G W syzkaller #0 [ 88.056388][ T5723] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/18/2026 [ 88.058158][ T5723] Call trace: [ 88.058740][ T5723] dump_backtrace+0x0/0x458 [ 88.059560][ T5723] show_stack+0x2c/0x3c [ 88.060305][ T5723] __dump_stack+0x30/0x40 [ 88.061043][ T5723] dump_stack_lvl+0xf4/0x15c [ 88.061839][ T5723] dump_stack+0x1c/0x5c [ 88.062561][ T5723] should_fail+0x3bc/0x514 [ 88.063292][ T5723] __should_failslab+0xbc/0x10c [ 88.064111][ T5723] should_failslab+0x10/0x28 [ 88.064897][ T5723] slab_pre_alloc_hook+0x64/0xe8 [ 88.065744][ T5723] kmem_cache_alloc+0x94/0x3d4 [ 88.066534][ T5723] btrfs_alloc_path+0x5c/0x68 [ 88.067347][ T5723] btrfs_insert_dir_item+0x184/0x3e8 [ 88.068272][ T5723] btrfs_add_link+0x2b0/0xa9c [ 88.069052][ T5723] btrfs_link+0x3a4/0x694 [ 88.069761][ T5723] vfs_link+0x5b4/0x744 [ 88.070509][ T5723] do_linkat+0x258/0x750 [ 88.071248][ T5723] __arm64_sys_linkat+0xe4/0x100 [ 88.072062][ T5723] invoke_syscall+0x98/0x2b0 [ 88.072870][ T5723] el0_svc_common+0x138/0x258 [ 88.073657][ T5723] do_el0_svc+0x58/0x13c [ 88.074341][ T5723] el0_svc+0x78/0x1d0 [ 88.075129][ T5723] el0t_64_sync_handler+0xcc/0xe4 [ 88.075995][ T5723] el0t_64_sync+0x1a0/0x1a4 [ 88.077593][ T5723] ------------[ cut here ]------------ [ 88.078571][ T5723] WARNING: CPU: 0 PID: 5723 at fs/btrfs/inode.c:6776 btrfs_add_link+0x718/0xa9c [ 88.080040][ T5723] Modules linked in: [ 88.080728][ T5723] CPU: 0 PID: 5723 Comm: syz.0.51 Tainted: G W syzkaller #0 [ 88.082169][ T5723] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/18/2026 [ 88.083886][ T5723] pstate: 62400005 (nZCv daif +PAN -UAO +TCO -DIT -SSBS BTYPE=--) [ 88.085300][ T5723] pc : btrfs_add_link+0x718/0xa9c [ 88.086156][ T5723] lr : btrfs_add_link+0x718/0xa9c [ 88.086999][ T5723] sp : ffff800022eb79e0 [ 88.087708][ T5723] x29: ffff800022eb7ae0 x28: ffff0000de1e62c0 x27: 0000000000000107 [ 88.089085][ T5723] x26: 00000000fffffff4 x25: 0000000000000001 x24: dfff800000000000 [ 88.090506][ T5723] x23: 0000000000000005 x22: 1fffe0001bc3cc63 x21: ffff7000045d6f44 [ 88.092067][ T5723] x20: 00000000fffffff4 x19: ffff0000de1e6318 x18: 0000000000000001 [ 88.093482][ T5723] x17: 0000000000000000 x16: ffff80001125f77c x15: 00000000ffffffff [ 88.094893][ T5723] x14: 0000000000000001 x13: 1fffe000341f05ab x12: 0000000000ff0100 [ 88.096349][ T5723] x11: 0000000000000000 x10: 0000000000000000 x9 : fdde175279b26f00 [ 88.097736][ T5723] x8 : fdde175279b26f00 x7 : 0000000000000001 x6 : 0000000000000001 [ 88.099064][ T5723] x5 : ffff800022eb72f8 x4 : ffff80001437f3e0 x3 : ffff80000850932c [ 88.100530][ T5723] x2 : 0000000000000001 x1 : 0000000100000000 x0 : 0000000000000026 [ 88.101942][ T5723] Call trace: [ 88.102531][ T5723] btrfs_add_link+0x718/0xa9c [ 88.103343][ T5723] btrfs_link+0x3a4/0x694 [ 88.104102][ T5723] vfs_link+0x5b4/0x744 [ 88.104822][ T5723] do_linkat+0x258/0x750 [ 88.105584][ T5723] __arm64_sys_linkat+0xe4/0x100 [ 88.106414][ T5723] invoke_syscall+0x98/0x2b0 [ 88.107249][ T5723] el0_svc_common+0x138/0x258 [ 88.108011][ T5723] do_el0_svc+0x58/0x13c [ 88.108727][ T5723] el0_svc+0x78/0x1d0 [ 88.109441][ T5723] el0t_64_sync_handler+0xcc/0xe4 [ 88.110349][ T5723] el0t_64_sync+0x1a0/0x1a4 [ 88.111111][ T5723] irq event stamp: 79772 [ 88.111912][ T5723] hardirqs last enabled at (79771): [] __up_console_sem+0xb4/0xfc [ 88.113548][ T5723] hardirqs last disabled at (79772): [] el1_dbg+0x24/0x80 [ 88.114973][ T5723] softirqs last enabled at (79752): [] handle_softirqs+0xa40/0xbe4 [ 88.116567][ T5723] softirqs last disabled at (79735): [] __irq_exit_rcu+0x240/0x43c [ 88.118214][ T5723] ---[ end trace 4bff21fd228f5f26 ]--- [ 88.120414][ T5723] BTRFS: error (device loop0) in btrfs_add_link:6776: errno=-12 Out of memory [ 88.332280][ T5745] BTRFS: device fsid ed167579-eb65-4e76-9a50-61ac97e9b59d devid 1 transid 8 /dev/loop0 scanned by syz.0.52 (5745) [ 88.337409][ T5745] btrfs_printk: 234 callbacks suppressed [ 88.337420][ T5745] BTRFS info (device loop0): using sha256 (sha256-ce) checksum algorithm [ 88.339855][ T5745] BTRFS info (device loop0): metadata ratio 1025 [ 88.340953][ T5745] BTRFS info (device loop0): doing ref verification [ 88.342167][ T5745] BTRFS info (device loop0): force clearing of disk cache [ 88.343506][ T5745] BTRFS info (device loop0): turning off barriers [ 88.344530][ T5745] BTRFS info (device loop0): setting nodatacow, compression disabled [ 88.345880][ T5745] BTRFS info (device loop0): enabling ssd optimizations [ 88.347898][ T5745] BTRFS info (device loop0): using spread ssd allocation scheme [ 88.349258][ T5745] BTRFS info (device loop0): not using ssd optimizations [ 88.350524][ T5745] BTRFS info (device loop0): not using spread ssd allocation scheme [ 88.351897][ T5745] BTRFS info (device loop0): using free space tree [ 88.352946][ T5745] BTRFS info (device loop0): has skinny extents [ 88.368352][ T5745] BTRFS info (device loop0): clearing free space tree [ 88.369558][ T5745] BTRFS info (device loop0): clearing compat-ro feature flag for FREE_SPACE_TREE (0x1) [ 88.371261][ T5745] BTRFS info (device loop0): clearing compat-ro feature flag for FREE_SPACE_TREE_VALID (0x2) [ 88.374511][ T5745] BTRFS info (device loop0): creating free space tree [ 88.375984][ T5745] BTRFS info (device loop0): setting compat-ro feature flag for FREE_SPACE_TREE (0x1) [ 88.378015][ T5745] BTRFS info (device loop0): setting compat-ro feature flag for FREE_SPACE_TREE_VALID (0x2) [ 88.382027][ T5745] FAULT_INJECTION: forcing a failure. [ 88.382027][ T5745] name failslab, interval 1, probability 0, space 0, times 0 [ 88.384208][ T5745] CPU: 1 PID: 5745 Comm: syz.0.52 Tainted: G W syzkaller #0 [ 88.385815][ T5745] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/18/2026 [ 88.387630][ T5745] Call trace: [ 88.388179][ T5745] dump_backtrace+0x0/0x458 [ 88.389044][ T5745] show_stack+0x2c/0x3c [ 88.389749][ T5745] __dump_stack+0x30/0x40 [ 88.390535][ T5745] dump_stack_lvl+0xf4/0x15c [ 88.391316][ T5745] dump_stack+0x1c/0x5c [ 88.391993][ T5745] should_fail+0x3bc/0x514 [ 88.392765][ T5745] __should_failslab+0xbc/0x10c [ 88.393603][ T5745] should_failslab+0x10/0x28 [ 88.394404][ T5745] slab_pre_alloc_hook+0x64/0xe8 [ 88.395265][ T5745] kmem_cache_alloc+0x94/0x3d4 [ 88.396116][ T5745] btrfs_alloc_path+0x5c/0x68 [ 88.397027][ T5745] btrfs_insert_dir_item+0x184/0x3e8 [ 88.397909][ T5745] btrfs_add_link+0x2b0/0xa9c [ 88.398772][ T5745] btrfs_link+0x3a4/0x694 [ 88.399609][ T5745] vfs_link+0x5b4/0x744 [ 88.400354][ T5745] do_linkat+0x258/0x750 [ 88.401154][ T5745] __arm64_sys_linkat+0xe4/0x100 [ 88.402045][ T5745] invoke_syscall+0x98/0x2b0 [ 88.402856][ T5745] el0_svc_common+0x138/0x258 [ 88.403619][ T5745] do_el0_svc+0x58/0x13c [ 88.404302][ T5745] el0_svc+0x78/0x1d0 [ 88.405002][ T5745] el0t_64_sync_handler+0xcc/0xe4 [ 88.405879][ T5745] el0t_64_sync+0x1a0/0x1a4 [ 88.408269][ T5745] ------------[ cut here ]------------ [ 88.409243][ T5745] WARNING: CPU: 1 PID: 5745 at fs/btrfs/inode.c:6776 btrfs_add_link+0x718/0xa9c [ 88.410749][ T5745] Modules linked in: [ 88.411436][ T5745] CPU: 1 PID: 5745 Comm: syz.0.52 Tainted: G W syzkaller #0 [ 88.412863][ T5745] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/18/2026 [ 88.414528][ T5745] pstate: 62400005 (nZCv daif +PAN -UAO +TCO -DIT -SSBS BTYPE=--) [ 88.415759][ T5745] pc : btrfs_add_link+0x718/0xa9c [ 88.416630][ T5745] lr : btrfs_add_link+0x718/0xa9c [ 88.417505][ T5745] sp : ffff800022ff79e0 [ 88.418226][ T5745] x29: ffff800022ff7ae0 x28: ffff0000de1f5790 x27: 0000000000000107 [ 88.419617][ T5745] x26: 00000000fffffff4 x25: 0000000000000001 x24: dfff800000000000 [ 88.420949][ T5745] x23: 0000000000000005 x22: 1fffe0001bc3eafd x21: ffff7000045fef44 [ 88.422438][ T5745] x20: 00000000fffffff4 x19: ffff0000de1f57e8 x18: 0000000000000001 [ 88.423804][ T5745] x17: 0000000000000000 x16: ffff80001125f77c x15: 00000000ffffffff [ 88.425166][ T5745] x14: 0000000000000001 x13: 1fffe000341f47ab x12: 0000000000ff0100 [ 88.426602][ T5745] x11: 0000000000000000 x10: 0000000000000000 x9 : 57954f7297d83700 [ 88.427996][ T5745] x8 : 57954f7297d83700 x7 : 0000000000000001 x6 : 0000000000000001 [ 88.429368][ T5745] x5 : ffff800022ff72f8 x4 : ffff80001437f3e0 x3 : ffff80000850932c [ 88.430726][ T5745] x2 : 0000000000000001 x1 : 0000000100000000 x0 : 0000000000000026 [ 88.432069][ T5745] Call trace: [ 88.432678][ T5745] btrfs_add_link+0x718/0xa9c [ 88.433463][ T5745] btrfs_link+0x3a4/0x694 [ 88.434202][ T5745] vfs_link+0x5b4/0x744 [ 88.434944][ T5745] do_linkat+0x258/0x750 [ 88.435722][ T5745] __arm64_sys_linkat+0xe4/0x100 [ 88.436607][ T5745] invoke_syscall+0x98/0x2b0 [ 88.437416][ T5745] el0_svc_common+0x138/0x258 [ 88.438249][ T5745] do_el0_svc+0x58/0x13c [ 88.439013][ T5745] el0_svc+0x78/0x1d0 [ 88.439718][ T5745] el0t_64_sync_handler+0xcc/0xe4 [ 88.440569][ T5745] el0t_64_sync+0x1a0/0x1a4 [ 88.441333][ T5745] irq event stamp: 79782 [ 88.442075][ T5745] hardirqs last enabled at (79781): [] __up_console_sem+0xb4/0xfc [ 88.443748][ T5745] hardirqs last disabled at (79782): [] el1_dbg+0x24/0x80 [ 88.445291][ T5745] softirqs last enabled at (79762): [] handle_softirqs+0xa40/0xbe4 [ 88.446915][ T5745] softirqs last disabled at (79715): [] __irq_exit_rcu+0x240/0x43c [ 88.448581][ T5745] ---[ end trace 4bff21fd228f5f27 ]--- [ 88.449753][ T5745] BTRFS: error (device loop0) in btrfs_add_link:6776: errno=-12 Out of memory [ 88.451218][ T5745] BTRFS info (device loop0): forced readonly 1970/01/01 00:01:28 executed programs: 39 [ 88.633176][ T5767] set_capacity_and_notify: 9 callbacks suppressed [ 88.633185][ T5767] loop0: detected capacity change from 0 to 32768 [ 88.678185][ T5767] BTRFS: device fsid ed167579-eb65-4e76-9a50-61ac97e9b59d devid 1 transid 8 /dev/loop0 scanned by syz.0.53 (5767) [ 88.682002][ T5767] BTRFS info (device loop0): using sha256 (sha256-ce) checksum algorithm [ 88.683533][ T5767] BTRFS info (device loop0): metadata ratio 1025 [ 88.684631][ T5767] BTRFS info (device loop0): doing ref verification [ 88.685728][ T5767] BTRFS info (device loop0): force clearing of disk cache [ 88.687426][ T5767] BTRFS info (device loop0): turning off barriers [ 88.688482][ T5767] BTRFS info (device loop0): setting nodatacow, compression disabled [ 88.689800][ T5767] BTRFS info (device loop0): enabling ssd optimizations [ 88.690964][ T5767] BTRFS info (device loop0): using spread ssd allocation scheme [ 88.692456][ T5767] BTRFS info (device loop0): not using ssd optimizations [ 88.693592][ T5767] BTRFS info (device loop0): not using spread ssd allocation scheme [ 88.695011][ T5767] BTRFS info (device loop0): using free space tree [ 88.696147][ T5767] BTRFS info (device loop0): has skinny extents [ 88.704521][ T5767] BTRFS info (device loop0): clearing free space tree [ 88.705841][ T5767] BTRFS info (device loop0): clearing compat-ro feature flag for FREE_SPACE_TREE (0x1) [ 88.707888][ T5767] BTRFS info (device loop0): clearing compat-ro feature flag for FREE_SPACE_TREE_VALID (0x2) [ 88.711215][ T5767] BTRFS info (device loop0): creating free space tree [ 88.712619][ T5767] BTRFS info (device loop0): setting compat-ro feature flag for FREE_SPACE_TREE (0x1) [ 88.714391][ T5767] BTRFS info (device loop0): setting compat-ro feature flag for FREE_SPACE_TREE_VALID (0x2) [ 88.720175][ T5767] FAULT_INJECTION: forcing a failure. [ 88.720175][ T5767] name failslab, interval 1, probability 0, space 0, times 0 [ 88.722374][ T5767] CPU: 0 PID: 5767 Comm: syz.0.53 Tainted: G W syzkaller #0 [ 88.723727][ T5767] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/18/2026 [ 88.725398][ T5767] Call trace: [ 88.725922][ T5767] dump_backtrace+0x0/0x458 [ 88.726673][ T5767] show_stack+0x2c/0x3c [ 88.727390][ T5767] __dump_stack+0x30/0x40 [ 88.728130][ T5767] dump_stack_lvl+0xf4/0x15c [ 88.728927][ T5767] dump_stack+0x1c/0x5c [ 88.729660][ T5767] should_fail+0x3bc/0x514 [ 88.730427][ T5767] __should_failslab+0xbc/0x10c [ 88.731250][ T5767] should_failslab+0x10/0x28 [ 88.732024][ T5767] slab_pre_alloc_hook+0x64/0xe8 [ 88.732830][ T5767] kmem_cache_alloc+0x94/0x3d4 [ 88.733650][ T5767] btrfs_alloc_path+0x5c/0x68 [ 88.734429][ T5767] btrfs_insert_dir_item+0x184/0x3e8 [ 88.735305][ T5767] btrfs_add_link+0x2b0/0xa9c [ 88.736072][ T5767] btrfs_link+0x3a4/0x694 [ 88.736768][ T5767] vfs_link+0x5b4/0x744 [ 88.737480][ T5767] do_linkat+0x258/0x750 [ 88.738182][ T5767] __arm64_sys_linkat+0xe4/0x100 [ 88.739012][ T5767] invoke_syscall+0x98/0x2b0 [ 88.739763][ T5767] el0_svc_common+0x138/0x258 [ 88.740470][ T5767] do_el0_svc+0x58/0x13c [ 88.741122][ T5767] el0_svc+0x78/0x1d0 [ 88.741747][ T5767] el0t_64_sync_handler+0xcc/0xe4 [ 88.742517][ T5767] el0t_64_sync+0x1a0/0x1a4 [ 88.745328][ T5767] ------------[ cut here ]------------ [ 88.746260][ T5767] WARNING: CPU: 0 PID: 5767 at fs/btrfs/inode.c:6776 btrfs_add_link+0x718/0xa9c [ 88.747767][ T5767] Modules linked in: [ 88.748473][ T5767] CPU: 0 PID: 5767 Comm: syz.0.53 Tainted: G W syzkaller #0 [ 88.749947][ T5767] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/18/2026 [ 88.751640][ T5767] pstate: 62400005 (nZCv daif +PAN -UAO +TCO -DIT -SSBS BTYPE=--) [ 88.752931][ T5767] pc : btrfs_add_link+0x718/0xa9c [ 88.753771][ T5767] lr : btrfs_add_link+0x718/0xa9c [ 88.754619][ T5767] sp : ffff8000231279e0 [ 88.755282][ T5767] x29: ffff800023127ae0 x28: ffff0000de1e64d0 x27: 0000000000000107 [ 88.756648][ T5767] x26: 00000000fffffff4 x25: 0000000000000001 x24: dfff800000000000 [ 88.758052][ T5767] x23: 0000000000000005 x22: 1fffe0001bc3cca5 x21: ffff700004624f44 [ 88.759380][ T5767] x20: 00000000fffffff4 x19: ffff0000de1e6528 x18: 0000000000000001 [ 88.760750][ T5767] x17: 0000000000000000 x16: ffff80001125f77c x15: 00000000ffffffff [ 88.762179][ T5767] x14: 0000000000000001 x13: 1fffe000341f05ab x12: 0000000000ff0100 [ 88.763601][ T5767] x11: 0000000000000000 x10: 0000000000000000 x9 : 2aa73c2b91758d00 [ 88.764936][ T5767] x8 : 2aa73c2b91758d00 x7 : 0000000000000001 x6 : 0000000000000001 [ 88.766310][ T5767] x5 : ffff8000231272f8 x4 : ffff80001437f3e0 x3 : ffff80000850932c [ 88.767692][ T5767] x2 : 0000000000000001 x1 : 0000000100000000 x0 : 0000000000000026 [ 88.769070][ T5767] Call trace: [ 88.769648][ T5767] btrfs_add_link+0x718/0xa9c [ 88.770484][ T5767] btrfs_link+0x3a4/0x694 [ 88.771237][ T5767] vfs_link+0x5b4/0x744 [ 88.771954][ T5767] do_linkat+0x258/0x750 [ 88.772699][ T5767] __arm64_sys_linkat+0xe4/0x100 [ 88.773576][ T5767] invoke_syscall+0x98/0x2b0 [ 88.774411][ T5767] el0_svc_common+0x138/0x258 [ 88.775201][ T5767] do_el0_svc+0x58/0x13c [ 88.775941][ T5767] el0_svc+0x78/0x1d0 [ 88.776603][ T5767] el0t_64_sync_handler+0xcc/0xe4 [ 88.777471][ T5767] el0t_64_sync+0x1a0/0x1a4 [ 88.778215][ T5767] irq event stamp: 79722 [ 88.778934][ T5767] hardirqs last enabled at (79721): [] __up_console_sem+0xb4/0xfc [ 88.780531][ T5767] hardirqs last disabled at (79722): [] el1_dbg+0x24/0x80 [ 88.781978][ T5767] softirqs last enabled at (79702): [] handle_softirqs+0xa40/0xbe4 [ 88.783581][ T5767] softirqs last disabled at (79687): [] __irq_exit_rcu+0x240/0x43c [ 88.785157][ T5767] ---[ end trace 4bff21fd228f5f28 ]--- [ 88.789055][ T5767] BTRFS: error (device loop0) in btrfs_add_link:6776: errno=-12 Out of memory [ 88.790558][ T5767] BTRFS info (device loop0): forced readonly