Warning: Permanently added '10.128.1.97' (ED25519) to the list of known hosts. 1970/01/01 00:01:01 ignoring optional flag "type"="gce" 1970/01/01 00:01:01 parsed 1 programs [ 62.711529][ T4380] Adding 124996k swap on ./swap-file. Priority:0 extents:1 across:124996k SSFS [ 63.980811][ T148] wlan0: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 63.982171][ T148] wlan0: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 63.983690][ T148] IPv6: ADDRCONF(NETDEV_CHANGE): wlan0: link becomes ready [ 63.990287][ T1608] wlan1: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 63.991632][ T1608] wlan1: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 63.993023][ T1608] IPv6: ADDRCONF(NETDEV_CHANGE): wlan1: link becomes ready [ 64.432031][ T4525] chnl_net:caif_netlink_parms(): no params data found [ 64.452138][ T4525] bridge0: port 1(bridge_slave_0) entered blocking state [ 64.453358][ T4525] bridge0: port 1(bridge_slave_0) entered disabled state [ 64.454982][ T4525] device bridge_slave_0 entered promiscuous mode [ 64.459106][ T4525] bridge0: port 2(bridge_slave_1) entered blocking state [ 64.460288][ T4525] bridge0: port 2(bridge_slave_1) entered disabled state [ 64.461776][ T4525] device bridge_slave_1 entered promiscuous mode [ 64.471040][ T4525] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 64.473716][ T4525] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 64.482155][ T4525] team0: Port device team_slave_0 added [ 64.484081][ T4525] team0: Port device team_slave_1 added [ 64.492282][ T4525] batman_adv: batadv0: Adding interface: batadv_slave_0 [ 64.493349][ T4525] 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. [ 64.497554][ T4525] batman_adv: batadv0: Not using interface batadv_slave_0 (retrying later): interface not active [ 64.501463][ T4525] batman_adv: batadv0: Adding interface: batadv_slave_1 [ 64.502591][ T4525] 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. [ 64.506924][ T4525] batman_adv: batadv0: Not using interface batadv_slave_1 (retrying later): interface not active [ 64.568208][ T4525] device hsr_slave_0 entered promiscuous mode [ 64.617291][ T4525] device hsr_slave_1 entered promiscuous mode [ 65.364029][ T4525] netdevsim netdevsim0 netdevsim0: renamed from eth0 [ 65.389131][ T4525] netdevsim netdevsim0 netdevsim1: renamed from eth1 [ 65.408839][ T4525] netdevsim netdevsim0 netdevsim2: renamed from eth2 [ 65.460125][ T4525] netdevsim netdevsim0 netdevsim3: renamed from eth3 [ 65.516937][ T4525] 8021q: adding VLAN 0 to HW filter on device bond0 [ 65.523474][ T272] IPv6: ADDRCONF(NETDEV_CHANGE): veth1: link becomes ready [ 65.525003][ T272] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 65.527981][ T4525] 8021q: adding VLAN 0 to HW filter on device team0 [ 65.530470][ T272] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bridge: link becomes ready [ 65.532181][ T272] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 65.533780][ T272] bridge0: port 1(bridge_slave_0) entered blocking state [ 65.534956][ T272] bridge0: port 1(bridge_slave_0) entered forwarding state [ 65.536745][ T272] IPv6: ADDRCONF(NETDEV_CHANGE): bridge0: link becomes ready [ 65.548386][ T148] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bridge: link becomes ready [ 65.550100][ T148] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 65.551694][ T148] bridge0: port 2(bridge_slave_1) entered blocking state [ 65.552787][ T148] bridge0: port 2(bridge_slave_1) entered forwarding state [ 65.554322][ T148] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bond: link becomes ready [ 65.556223][ T148] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bond: link becomes ready [ 65.560814][ T148] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_team: link becomes ready [ 65.562893][ T148] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 65.564509][ T148] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_team: link becomes ready [ 65.566208][ T148] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 65.568841][ T148] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_hsr: link becomes ready [ 65.570449][ T148] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 65.574418][ T4525] hsr0: Slave B (hsr_slave_1) is not up; please bring it up to get a fully working HSR network [ 65.576573][ T4525] IPv6: ADDRCONF(NETDEV_CHANGE): hsr0: link becomes ready [ 65.580517][ T148] IPv6: ADDRCONF(NETDEV_CHANGE): team0: link becomes ready [ 65.582228][ T148] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_hsr: link becomes ready [ 65.583816][ T148] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 65.623773][ T136] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan1: link becomes ready [ 65.625129][ T136] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan0: link becomes ready [ 65.629744][ T4525] 8021q: adding VLAN 0 to HW filter on device batadv0 [ 65.638763][ T136] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_virt_wifi: link becomes ready [ 65.640440][ T136] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_virt_wifi: link becomes ready [ 65.646113][ T1608] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_vlan: link becomes ready [ 65.649424][ T1608] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_vlan: link becomes ready [ 65.651508][ T1608] IPv6: ADDRCONF(NETDEV_CHANGE): vlan0: link becomes ready [ 65.653604][ T1608] IPv6: ADDRCONF(NETDEV_CHANGE): vlan1: link becomes ready [ 65.656137][ T4525] device veth0_vlan entered promiscuous mode [ 65.660459][ T4525] device veth1_vlan entered promiscuous mode [ 65.670279][ T1608] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan0: link becomes ready [ 65.671981][ T1608] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan1: link becomes ready [ 65.673484][ T1608] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_macvtap: link becomes ready [ 65.675181][ T1608] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_macvtap: link becomes ready [ 65.679885][ T4525] device veth0_macvtap entered promiscuous mode [ 65.682526][ T4525] device veth1_macvtap entered promiscuous mode [ 65.689299][ T4525] batman_adv: batadv0: Interface activated: batadv_slave_0 [ 65.690508][ T1608] IPv6: ADDRCONF(NETDEV_CHANGE): macvtap0: link becomes ready [ 65.691918][ T1608] IPv6: ADDRCONF(NETDEV_CHANGE): macsec0: link becomes ready [ 65.693371][ T1608] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_0: link becomes ready [ 65.694930][ T1608] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_batadv: link becomes ready [ 65.700789][ T4525] batman_adv: batadv0: Interface activated: batadv_slave_1 [ 65.702075][ T136] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_1: link becomes ready [ 65.703645][ T136] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_batadv: link becomes ready [ 65.706587][ T4525] netdevsim netdevsim0 netdevsim0: set [1, 0] type 2 family 0 port 6081 - 0 [ 65.709604][ T4525] netdevsim netdevsim0 netdevsim1: set [1, 0] type 2 family 0 port 6081 - 0 [ 65.711095][ T4525] netdevsim netdevsim0 netdevsim2: set [1, 0] type 2 family 0 port 6081 - 0 [ 65.712540][ T4525] netdevsim netdevsim0 netdevsim3: set [1, 0] type 2 family 0 port 6081 - 0 1970/01/01 00:01:06 executed programs: 0 [ 66.084725][ T4690] chnl_net:caif_netlink_parms(): no params data found [ 66.106844][ T4690] bridge0: port 1(bridge_slave_0) entered blocking state [ 66.109290][ T4690] bridge0: port 1(bridge_slave_0) entered disabled state [ 66.110896][ T4690] device bridge_slave_0 entered promiscuous mode [ 66.113422][ T4690] bridge0: port 2(bridge_slave_1) entered blocking state [ 66.114646][ T4690] bridge0: port 2(bridge_slave_1) entered disabled state [ 66.116232][ T4690] device bridge_slave_1 entered promiscuous mode [ 66.129062][ T4690] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 66.131925][ T4690] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 66.142353][ T4690] team0: Port device team_slave_0 added [ 66.144233][ T4690] team0: Port device team_slave_1 added [ 66.152633][ T4690] batman_adv: batadv0: Adding interface: batadv_slave_0 [ 66.153773][ T4690] 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. [ 66.160206][ T4690] batman_adv: batadv0: Not using interface batadv_slave_0 (retrying later): interface not active [ 66.162623][ T4690] batman_adv: batadv0: Adding interface: batadv_slave_1 [ 66.163781][ T4690] 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. [ 66.168977][ T4690] batman_adv: batadv0: Not using interface batadv_slave_1 (retrying later): interface not active [ 66.218850][ T4690] device hsr_slave_0 entered promiscuous mode [ 66.257380][ T4690] device hsr_slave_1 entered promiscuous mode [ 66.297137][ T4690] debugfs: Directory 'hsr0' with parent 'hsr' already present! [ 66.298424][ T4690] Cannot create hsr debugfs directory [ 66.332189][ T4690] netdevsim netdevsim0 netdevsim3 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 68.087276][ T4164] Bluetooth: hci0: command 0x0409 tx timeout [ 68.999661][ T4690] netdevsim netdevsim0 netdevsim2 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 69.610209][ T13] cfg80211: failed to load regulatory.db [ 69.612802][ T2063] ieee802154 phy0 wpan0: encryption failed: -22 [ 69.613938][ T2063] ieee802154 phy1 wpan1: encryption failed: -22 [ 70.167171][ T4165] Bluetooth: hci0: command 0x041b tx timeout [ 71.051246][ T4690] netdevsim netdevsim0 netdevsim1 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 71.103566][ T4690] netdevsim netdevsim0 netdevsim0 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 71.272072][ T4690] netdevsim netdevsim0 netdevsim0: renamed from eth0 [ 71.309095][ T4690] netdevsim netdevsim0 netdevsim1: renamed from eth1 [ 71.358465][ T4690] netdevsim netdevsim0 netdevsim2: renamed from eth2 [ 71.416515][ T4690] netdevsim netdevsim0 netdevsim3: renamed from eth3 [ 71.491657][ T4690] 8021q: adding VLAN 0 to HW filter on device bond0 [ 71.496111][ T136] IPv6: ADDRCONF(NETDEV_CHANGE): veth1: link becomes ready [ 71.498027][ T136] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 71.500991][ T4690] 8021q: adding VLAN 0 to HW filter on device team0 [ 71.503656][ T136] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bridge: link becomes ready [ 71.505269][ T136] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 71.506878][ T136] bridge0: port 1(bridge_slave_0) entered blocking state [ 71.508228][ T136] bridge0: port 1(bridge_slave_0) entered forwarding state [ 71.509790][ T136] IPv6: ADDRCONF(NETDEV_CHANGE): bridge0: link becomes ready [ 71.512604][ T136] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bridge: link becomes ready [ 71.514370][ T136] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 71.516002][ T136] bridge0: port 2(bridge_slave_1) entered blocking state [ 71.517286][ T136] bridge0: port 2(bridge_slave_1) entered forwarding state [ 71.520062][ T136] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bond: link becomes ready [ 71.522946][ T136] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bond: link becomes ready [ 71.525930][ T136] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_team: link becomes ready [ 71.528391][ T136] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 71.530703][ T136] IPv6: ADDRCONF(NETDEV_CHANGE): team0: link becomes ready [ 71.533174][ T136] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_team: link becomes ready [ 71.534798][ T136] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 71.538802][ T1608] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_hsr: link becomes ready [ 71.540651][ T1608] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 71.543350][ T1608] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_hsr: link becomes ready [ 71.544888][ T1608] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 71.547927][ T4690] IPv6: ADDRCONF(NETDEV_CHANGE): hsr0: link becomes ready [ 71.588158][ T136] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan1: link becomes ready [ 71.589634][ T136] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan0: link becomes ready [ 71.593280][ T4690] 8021q: adding VLAN 0 to HW filter on device batadv0 [ 71.600094][ T136] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_virt_wifi: link becomes ready [ 71.601777][ T136] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_virt_wifi: link becomes ready [ 71.609341][ T136] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_vlan: link becomes ready [ 71.610796][ T136] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_vlan: link becomes ready [ 71.612433][ T136] IPv6: ADDRCONF(NETDEV_CHANGE): vlan0: link becomes ready [ 71.613849][ T136] IPv6: ADDRCONF(NETDEV_CHANGE): vlan1: link becomes ready [ 71.616082][ T4690] device veth0_vlan entered promiscuous mode [ 71.619787][ T4690] device veth1_vlan entered promiscuous mode [ 71.638591][ T136] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan0: link becomes ready [ 71.640227][ T136] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan1: link becomes ready [ 71.641680][ T136] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_macvtap: link becomes ready [ 71.644188][ T136] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_macvtap: link becomes ready [ 71.646265][ T4690] device veth0_macvtap entered promiscuous mode [ 71.649436][ T4690] device veth1_macvtap entered promiscuous mode [ 71.654575][ T4690] batman_adv: The newly added mac address (aa:aa:aa:aa:aa:3e) already exists on: batadv_slave_0 [ 71.656454][ T4690] batman_adv: It is strongly recommended to keep mac addresses unique to avoid problems! [ 71.659076][ T4690] batman_adv: batadv0: Interface activated: batadv_slave_0 [ 71.660353][ T272] IPv6: ADDRCONF(NETDEV_CHANGE): macvtap0: link becomes ready [ 71.661839][ T272] IPv6: ADDRCONF(NETDEV_CHANGE): macsec0: link becomes ready [ 71.663287][ T272] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_0: link becomes ready [ 71.664828][ T272] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_batadv: link becomes ready [ 71.667240][ T4690] batman_adv: The newly added mac address (aa:aa:aa:aa:aa:3f) already exists on: batadv_slave_1 [ 71.668872][ T4690] batman_adv: It is strongly recommended to keep mac addresses unique to avoid problems! [ 71.670815][ T4690] batman_adv: batadv0: Interface activated: batadv_slave_1 [ 71.672455][ T136] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_1: link becomes ready [ 71.674142][ T136] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_batadv: link becomes ready [ 71.676406][ T4690] netdevsim netdevsim0 netdevsim0: set [1, 0] type 2 family 0 port 6081 - 0 [ 71.678691][ T4690] netdevsim netdevsim0 netdevsim1: set [1, 0] type 2 family 0 port 6081 - 0 [ 71.680098][ T4690] netdevsim netdevsim0 netdevsim2: set [1, 0] type 2 family 0 port 6081 - 0 [ 71.681623][ T4690] netdevsim netdevsim0 netdevsim3: set [1, 0] type 2 family 0 port 6081 - 0 [ 71.713464][ T272] wlan0: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 71.715995][ T272] wlan0: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 71.718017][ T1608] IPv6: ADDRCONF(NETDEV_CHANGE): wlan0: link becomes ready [ 71.724291][ T1608] wlan1: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 71.725590][ T1608] wlan1: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 71.727467][ T1608] IPv6: ADDRCONF(NETDEV_CHANGE): wlan1: link becomes ready 1970/01/01 00:01:11 executed programs: 2 [ 71.854734][ T4913] loop0: detected capacity change from 0 to 32768 [ 71.903769][ T4913] BTRFS: device fsid c9fe44da-de57-406a-8241-57ec7d4412cf devid 1 transid 8 /dev/loop0 scanned by syz.0.15 (4913) [ 71.910951][ T4913] BTRFS info (device loop0): using crc32c (crc32c-generic) checksum algorithm [ 71.912500][ T4913] BTRFS info (device loop0): using free space tree [ 71.913600][ T4913] BTRFS info (device loop0): has skinny extents [ 71.926090][ T4913] BTRFS info (device loop0): enabling ssd optimizations [ 71.936799][ T4913] FAULT_INJECTION: forcing a failure. [ 71.936799][ T4913] name failslab, interval 1, probability 0, space 0, times 1 [ 71.941261][ T4913] CPU: 1 PID: 4913 Comm: syz.0.15 Not tainted syzkaller #0 [ 71.942520][ T4913] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/18/2026 [ 71.944234][ T4913] Call trace: [ 71.944782][ T4913] dump_backtrace+0x0/0x458 [ 71.945589][ T4913] show_stack+0x2c/0x3c [ 71.946384][ T4913] __dump_stack+0x30/0x40 [ 71.947125][ T4913] dump_stack_lvl+0xf4/0x15c [ 71.947887][ T4913] dump_stack+0x1c/0x5c [ 71.948627][ T4913] should_fail+0x3bc/0x514 [ 71.949389][ T4913] __should_failslab+0xbc/0x10c [ 71.950185][ T4913] should_failslab+0x10/0x28 [ 71.950917][ T4913] slab_pre_alloc_hook+0x64/0xe8 [ 71.951711][ T4913] kmem_cache_alloc+0x94/0x3d4 [ 71.952499][ T4913] btrfs_alloc_path+0x5c/0x68 [ 71.953364][ T4913] __btrfs_unlink_inode+0x1dc/0xaec [ 71.954275][ T4913] btrfs_unlink+0x108/0x258 [ 71.955077][ T4913] vfs_unlink+0x2e0/0x4f4 [ 71.955814][ T4913] do_unlinkat+0x328/0x618 [ 71.956599][ T4913] __arm64_sys_unlinkat+0xe0/0xfc [ 71.957430][ T4913] invoke_syscall+0x98/0x2b0 [ 71.958162][ T4913] el0_svc_common+0x138/0x258 [ 71.958910][ T4913] do_el0_svc+0x58/0x13c [ 71.959602][ T4913] el0_svc+0x78/0x1d0 [ 71.960260][ T4913] el0t_64_sync_handler+0xcc/0xe4 [ 71.961073][ T4913] el0t_64_sync+0x1a0/0x1a4 [ 72.155709][ T4937] loop0: detected capacity change from 0 to 32768 [ 72.160789][ T4937] BTRFS: device fsid c9fe44da-de57-406a-8241-57ec7d4412cf devid 1 transid 8 /dev/loop0 scanned by syz.0.16 (4937) [ 72.165566][ T4937] BTRFS info (device loop0): using crc32c (crc32c-generic) checksum algorithm [ 72.167247][ T4937] BTRFS info (device loop0): using free space tree [ 72.168348][ T4937] BTRFS info (device loop0): has skinny extents [ 72.185762][ T4937] BTRFS info (device loop0): enabling ssd optimizations [ 72.194442][ T4937] FAULT_INJECTION: forcing a failure. [ 72.194442][ T4937] name failslab, interval 1, probability 0, space 0, times 0 [ 72.196510][ T4937] CPU: 0 PID: 4937 Comm: syz.0.16 Not tainted syzkaller #0 [ 72.197789][ T4937] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/18/2026 [ 72.199503][ T4937] Call trace: [ 72.200051][ T4937] dump_backtrace+0x0/0x458 [ 72.200813][ T4937] show_stack+0x2c/0x3c [ 72.201558][ T4937] __dump_stack+0x30/0x40 [ 72.202337][ T4937] dump_stack_lvl+0xf4/0x15c [ 72.203120][ T4937] dump_stack+0x1c/0x5c [ 72.203820][ T4937] should_fail+0x3bc/0x514 [ 72.204550][ T4937] __should_failslab+0xbc/0x10c [ 72.205388][ T4937] should_failslab+0x10/0x28 [ 72.206091][ T4937] slab_pre_alloc_hook+0x64/0xe8 [ 72.206919][ T4937] kmem_cache_alloc_trace+0x98/0x3ec [ 72.207840][ T4937] btrfs_delete_delayed_dir_index+0x22c/0x56c [ 72.208878][ T4937] __btrfs_unlink_inode+0x350/0xaec [ 72.209796][ T4937] btrfs_unlink+0x108/0x258 [ 72.210594][ T4937] vfs_unlink+0x2e0/0x4f4 [ 72.211286][ T4937] do_unlinkat+0x328/0x618 [ 72.212108][ T4937] __arm64_sys_unlinkat+0xe0/0xfc [ 72.212973][ T4937] invoke_syscall+0x98/0x2b0 [ 72.213704][ T4937] el0_svc_common+0x138/0x258 [ 72.214540][ T4937] do_el0_svc+0x58/0x13c [ 72.215196][ T4937] el0_svc+0x78/0x1d0 [ 72.215828][ T4937] el0t_64_sync_handler+0xcc/0xe4 [ 72.216733][ T4937] el0t_64_sync+0x1a0/0x1a4 [ 72.221216][ T4937] ------------[ cut here ]------------ [ 72.222215][ T4937] WARNING: CPU: 0 PID: 4937 at fs/btrfs/inode.c:4182 __btrfs_unlink_inode+0x904/0xaec [ 72.223670][ T4937] Modules linked in: [ 72.224270][ T4937] CPU: 0 PID: 4937 Comm: syz.0.16 Not tainted syzkaller #0 [ 72.225386][ T4937] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/18/2026 [ 72.226899][ T4937] pstate: 62400005 (nZCv daif +PAN -UAO +TCO -DIT -SSBS BTYPE=--) [ 72.228230][ T4937] pc : __btrfs_unlink_inode+0x904/0xaec [ 72.229200][ T4937] lr : __btrfs_unlink_inode+0x904/0xaec [ 72.230132][ T4937] sp : ffff80001ffe7a60 [ 72.230865][ T4937] x29: ffff80001ffe7b10 x28: ffff0000c9c98000 x27: ffff0000ec998010 [ 72.232258][ T4937] x26: 0000000000000100 x25: 00000000fffffff4 x24: ffff0000ced93210 [ 72.233655][ T4937] x23: ffff700003ffcf54 x22: dfff800000000000 x21: ffff0000ec8293a0 [ 72.235004][ T4937] x20: ffff0000de733268 x19: 1fffe0001bce664d x18: 0000000000000001 [ 72.236431][ T4937] x17: 0000000000000000 x16: ffff80001125f448 x15: 00000000ffffffff [ 72.237820][ T4937] x14: 0000000000000001 x13: 1fffe000341f05ab x12: 0000000000ff0100 [ 72.239147][ T4937] x11: 0000000000000000 x10: 0000000000000000 x9 : 310fd68d137fdd00 [ 72.240567][ T4937] x8 : 310fd68d137fdd00 x7 : 0000000000000001 x6 : 0000000000000001 [ 72.242001][ T4937] x5 : ffff80001ffe7378 x4 : ffff80001437f3e0 x3 : ffff800008509220 [ 72.243399][ T4937] x2 : 0000000000000001 x1 : 0000000100000000 x0 : 0000000000000026 [ 72.244824][ T4937] Call trace: [ 72.245413][ T4937] __btrfs_unlink_inode+0x904/0xaec [ 72.246288][ T4937] btrfs_unlink+0x108/0x258 [ 72.247024][ T4937] vfs_unlink+0x2e0/0x4f4 [ 72.247763][ T4937] do_unlinkat+0x328/0x618 [ 72.248530][ T4937] __arm64_sys_unlinkat+0xe0/0xfc [ 72.249330][ T4937] invoke_syscall+0x98/0x2b0 [ 72.250004][ T4937] el0_svc_common+0x138/0x258 [ 72.250730][ T4937] do_el0_svc+0x58/0x13c [ 72.251382][ T4937] el0_svc+0x78/0x1d0 [ 72.251972][ T4937] el0t_64_sync_handler+0xcc/0xe4 [ 72.252782][ T4937] el0t_64_sync+0x1a0/0x1a4 [ 72.253451][ T4937] irq event stamp: 81074 [ 72.254139][ T4937] hardirqs last enabled at (81073): [] __up_console_sem+0xb4/0xfc [ 72.255667][ T4937] hardirqs last disabled at (81074): [] el1_dbg+0x24/0x80 [ 72.257201][ T4937] softirqs last enabled at (81030): [] handle_softirqs+0xa40/0xbe4 [ 72.258823][ T4937] softirqs last disabled at (80953): [] __irq_exit_rcu+0x240/0x43c [ 72.260435][ T4937] ---[ end trace 98697d1551805d93 ]--- [ 72.262656][ T4937] BTRFS: error (device loop0) in __btrfs_unlink_inode:4182: errno=-12 Out of memory [ 72.264096][ T4937] BTRFS info (device loop0): forced readonly [ 72.267645][ T4165] Bluetooth: hci0: command 0x040f tx timeout [ 72.458783][ T4959] loop0: detected capacity change from 0 to 32768 [ 72.512278][ T4959] BTRFS: device fsid c9fe44da-de57-406a-8241-57ec7d4412cf devid 1 transid 8 /dev/loop0 scanned by syz.0.17 (4959) [ 72.518660][ T4959] BTRFS info (device loop0): using crc32c (crc32c-generic) checksum algorithm [ 72.520071][ T4959] BTRFS info (device loop0): using free space tree [ 72.521106][ T4959] BTRFS info (device loop0): has skinny extents [ 72.528997][ T4959] BTRFS info (device loop0): enabling ssd optimizations [ 72.534221][ T4959] FAULT_INJECTION: forcing a failure. [ 72.534221][ T4959] name failslab, interval 1, probability 0, space 0, times 0 [ 72.536385][ T4959] CPU: 1 PID: 4959 Comm: syz.0.17 Tainted: G W syzkaller #0 [ 72.537976][ T4959] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/18/2026 [ 72.539772][ T4959] Call trace: [ 72.540334][ T4959] dump_backtrace+0x0/0x458 [ 72.541152][ T4959] show_stack+0x2c/0x3c [ 72.541848][ T4959] __dump_stack+0x30/0x40 [ 72.542573][ T4959] dump_stack_lvl+0xf4/0x15c [ 72.543359][ T4959] dump_stack+0x1c/0x5c [ 72.544051][ T4959] should_fail+0x3bc/0x514 [ 72.544874][ T4959] __should_failslab+0xbc/0x10c [ 72.545738][ T4959] should_failslab+0x10/0x28 [ 72.546494][ T4959] slab_pre_alloc_hook+0x64/0xe8 [ 72.547337][ T4959] kmem_cache_alloc_trace+0x98/0x3ec [ 72.548223][ T4959] btrfs_delete_delayed_dir_index+0x22c/0x56c [ 72.549285][ T4959] __btrfs_unlink_inode+0x350/0xaec [ 72.550149][ T4959] btrfs_unlink+0x108/0x258 [ 72.550969][ T4959] vfs_unlink+0x2e0/0x4f4 [ 72.551745][ T4959] do_unlinkat+0x328/0x618 [ 72.552489][ T4959] __arm64_sys_unlinkat+0xe0/0xfc [ 72.553334][ T4959] invoke_syscall+0x98/0x2b0 [ 72.554156][ T4959] el0_svc_common+0x138/0x258 [ 72.555007][ T4959] do_el0_svc+0x58/0x13c [ 72.555755][ T4959] el0_svc+0x78/0x1d0 [ 72.556481][ T4959] el0t_64_sync_handler+0xcc/0xe4 [ 72.557327][ T4959] el0t_64_sync+0x1a0/0x1a4 [ 72.559944][ T4959] ------------[ cut here ]------------ [ 72.561043][ T4959] WARNING: CPU: 1 PID: 4959 at fs/btrfs/inode.c:4182 __btrfs_unlink_inode+0x904/0xaec [ 72.562552][ T4959] Modules linked in: [ 72.563201][ T4959] CPU: 1 PID: 4959 Comm: syz.0.17 Tainted: G W syzkaller #0 [ 72.564653][ T4959] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/18/2026 [ 72.566377][ T4959] pstate: 62400005 (nZCv daif +PAN -UAO +TCO -DIT -SSBS BTYPE=--) [ 72.567711][ T4959] pc : __btrfs_unlink_inode+0x904/0xaec [ 72.568685][ T4959] lr : __btrfs_unlink_inode+0x904/0xaec [ 72.569662][ T4959] sp : ffff80001ffe7a60 [ 72.570359][ T4959] x29: ffff80001ffe7b10 x28: ffff0000d792a000 x27: ffff0000e2528410 [ 72.571751][ T4959] x26: 0000000000000100 x25: 00000000fffffff4 x24: ffff0000ddef59a0 [ 72.573149][ T4959] x23: ffff700003ffcf54 x22: dfff800000000000 x21: ffff0000e24abae0 [ 72.574527][ T4959] x20: ffff0000de7d0268 x19: 1fffe0001bcfa04d x18: 0000000000000001 [ 72.575885][ T4959] x17: 0000000000000000 x16: ffff80001125f448 x15: 00000000ffffffff [ 72.577304][ T4959] x14: 0000000000000001 x13: 1fffe000341f47ab x12: 0000000000ff0100 [ 72.578738][ T4959] x11: 0000000000000000 x10: 0000000000000000 x9 : 923d45f06225b100 [ 72.580142][ T4959] x8 : 923d45f06225b100 x7 : 0000000000000001 x6 : 0000000000000001 [ 72.581558][ T4959] x5 : ffff80001ffe7378 x4 : ffff80001437f3e0 x3 : ffff800008509220 [ 72.582951][ T4959] x2 : 0000000000000001 x1 : 0000000100000000 x0 : 0000000000000026 [ 72.584273][ T4959] Call trace: [ 72.584783][ T4959] __btrfs_unlink_inode+0x904/0xaec [ 72.585662][ T4959] btrfs_unlink+0x108/0x258 [ 72.586449][ T4959] vfs_unlink+0x2e0/0x4f4 [ 72.587195][ T4959] do_unlinkat+0x328/0x618 [ 72.587961][ T4959] __arm64_sys_unlinkat+0xe0/0xfc [ 72.588846][ T4959] invoke_syscall+0x98/0x2b0 [ 72.589703][ T4959] el0_svc_common+0x138/0x258 [ 72.590458][ T4959] do_el0_svc+0x58/0x13c [ 72.591159][ T4959] el0_svc+0x78/0x1d0 [ 72.591872][ T4959] el0t_64_sync_handler+0xcc/0xe4 [ 72.592743][ T4959] el0t_64_sync+0x1a0/0x1a4 [ 72.593557][ T4959] irq event stamp: 81884 [ 72.594315][ T4959] hardirqs last enabled at (81883): [] __up_console_sem+0xb4/0xfc [ 72.595850][ T4959] hardirqs last disabled at (81884): [] el1_dbg+0x24/0x80 [ 72.597362][ T4959] softirqs last enabled at (81864): [] handle_softirqs+0xa40/0xbe4 [ 72.599048][ T4959] softirqs last disabled at (81847): [] __irq_exit_rcu+0x240/0x43c [ 72.600797][ T4959] ---[ end trace 98697d1551805d94 ]--- [ 72.602587][ T4959] BTRFS: error (device loop0) in __btrfs_unlink_inode:4182: errno=-12 Out of memory [ 72.604721][ T4959] BTRFS info (device loop0): forced readonly [ 72.756698][ T4981] loop0: detected capacity change from 0 to 32768 [ 72.803016][ T4981] BTRFS: device fsid c9fe44da-de57-406a-8241-57ec7d4412cf devid 1 transid 8 /dev/loop0 scanned by syz.0.18 (4981) [ 72.810841][ T4981] BTRFS info (device loop0): using crc32c (crc32c-generic) checksum algorithm [ 72.812406][ T4981] BTRFS info (device loop0): using free space tree [ 72.813515][ T4981] BTRFS info (device loop0): has skinny extents [ 72.828682][ T4981] BTRFS info (device loop0): enabling ssd optimizations [ 72.834680][ T4981] FAULT_INJECTION: forcing a failure. [ 72.834680][ T4981] name failslab, interval 1, probability 0, space 0, times 0 [ 72.836969][ T4981] CPU: 0 PID: 4981 Comm: syz.0.18 Tainted: G W syzkaller #0 [ 72.838482][ T4981] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/18/2026 [ 72.840273][ T4981] Call trace: [ 72.840840][ T4981] dump_backtrace+0x0/0x458 [ 72.841643][ T4981] show_stack+0x2c/0x3c [ 72.842387][ T4981] __dump_stack+0x30/0x40 [ 72.843116][ T4981] dump_stack_lvl+0xf4/0x15c [ 72.843887][ T4981] dump_stack+0x1c/0x5c [ 72.844584][ T4981] should_fail+0x3bc/0x514 [ 72.845377][ T4981] __should_failslab+0xbc/0x10c [ 72.846181][ T4981] should_failslab+0x10/0x28 [ 72.846944][ T4981] slab_pre_alloc_hook+0x64/0xe8 [ 72.847805][ T4981] kmem_cache_alloc_trace+0x98/0x3ec [ 72.848729][ T4981] btrfs_delete_delayed_dir_index+0x22c/0x56c [ 72.849819][ T4981] __btrfs_unlink_inode+0x350/0xaec [ 72.850722][ T4981] btrfs_unlink+0x108/0x258 [ 72.851504][ T4981] vfs_unlink+0x2e0/0x4f4 [ 72.852233][ T4981] do_unlinkat+0x328/0x618 [ 72.853037][ T4981] __arm64_sys_unlinkat+0xe0/0xfc [ 72.853934][ T4981] invoke_syscall+0x98/0x2b0 [ 72.854733][ T4981] el0_svc_common+0x138/0x258 [ 72.855526][ T4981] do_el0_svc+0x58/0x13c [ 72.856268][ T4981] el0_svc+0x78/0x1d0 [ 72.856949][ T4981] el0t_64_sync_handler+0xcc/0xe4 [ 72.857806][ T4981] el0t_64_sync+0x1a0/0x1a4 [ 72.859516][ T4981] ------------[ cut here ]------------ [ 72.860437][ T4981] WARNING: CPU: 0 PID: 4981 at fs/btrfs/inode.c:4182 __btrfs_unlink_inode+0x904/0xaec [ 72.861900][ T4981] Modules linked in: [ 72.862532][ T4981] CPU: 0 PID: 4981 Comm: syz.0.18 Tainted: G W syzkaller #0 [ 72.864020][ T4981] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/18/2026 [ 72.865761][ T4981] pstate: 62400005 (nZCv daif +PAN -UAO +TCO -DIT -SSBS BTYPE=--) [ 72.867107][ T4981] pc : __btrfs_unlink_inode+0x904/0xaec [ 72.868156][ T4981] lr : __btrfs_unlink_inode+0x904/0xaec [ 72.869094][ T4981] sp : ffff8000202e7a60 [ 72.869839][ T4981] x29: ffff8000202e7b10 x28: ffff0000d2518000 x27: ffff0000ec998410 [ 72.871225][ T4981] x26: 0000000000000100 x25: 00000000fffffff4 x24: ffff0000ca695370 [ 72.872564][ T4981] x23: ffff70000405cf54 x22: dfff800000000000 x21: ffff0000ec82b110 [ 72.873918][ T4981] x20: ffff0000de7333c8 x19: 1fffe0001bce6679 x18: 0000000000000001 [ 72.875273][ T4981] x17: 0000000000000000 x16: ffff80001125f448 x15: 00000000ffffffff [ 72.876621][ T4981] x14: 0000000000000001 x13: 1fffe000341f05ab x12: 0000000000ff0100 [ 72.877998][ T4981] x11: 0000000000000000 x10: 0000000000000000 x9 : ad7716634bdeba00 [ 72.879317][ T4981] x8 : ad7716634bdeba00 x7 : 0000000000000001 x6 : 0000000000000001 [ 72.880643][ T4981] x5 : ffff8000202e7378 x4 : ffff80001437f3e0 x3 : ffff800008509220 [ 72.882056][ T4981] x2 : 0000000000000001 x1 : 0000000100000000 x0 : 0000000000000026 [ 72.883490][ T4981] Call trace: [ 72.884056][ T4981] __btrfs_unlink_inode+0x904/0xaec [ 72.884954][ T4981] btrfs_unlink+0x108/0x258 [ 72.885704][ T4981] vfs_unlink+0x2e0/0x4f4 [ 72.886457][ T4981] do_unlinkat+0x328/0x618 [ 72.887152][ T4981] __arm64_sys_unlinkat+0xe0/0xfc [ 72.888011][ T4981] invoke_syscall+0x98/0x2b0 [ 72.888840][ T4981] el0_svc_common+0x138/0x258 [ 72.889617][ T4981] do_el0_svc+0x58/0x13c [ 72.890344][ T4981] el0_svc+0x78/0x1d0 [ 72.891010][ T4981] el0t_64_sync_handler+0xcc/0xe4 [ 72.891833][ T4981] el0t_64_sync+0x1a0/0x1a4 [ 72.892603][ T4981] irq event stamp: 80536 [ 72.893305][ T4981] hardirqs last enabled at (80535): [] __up_console_sem+0xb4/0xfc [ 72.894952][ T4981] hardirqs last disabled at (80536): [] el1_dbg+0x24/0x80 [ 72.896492][ T4981] softirqs last enabled at (80516): [] handle_softirqs+0xa40/0xbe4 [ 72.898195][ T4981] softirqs last disabled at (80431): [] __irq_exit_rcu+0x240/0x43c [ 72.899734][ T4981] ---[ end trace 98697d1551805d95 ]--- [ 72.901442][ T4981] BTRFS: error (device loop0) in __btrfs_unlink_inode:4182: errno=-12 Out of memory [ 72.904058][ T4981] BTRFS info (device loop0): forced readonly [ 73.057703][ T5003] loop0: detected capacity change from 0 to 32768 [ 73.109138][ T5003] BTRFS: device fsid c9fe44da-de57-406a-8241-57ec7d4412cf devid 1 transid 8 /dev/loop0 scanned by syz.0.19 (5003) [ 73.112254][ T354] device hsr_slave_0 left promiscuous mode [ 73.157876][ T354] device hsr_slave_1 left promiscuous mode [ 73.158883][ T5003] BTRFS info (device loop0): using crc32c (crc32c-generic) checksum algorithm [ 73.160359][ T5003] BTRFS info (device loop0): using free space tree [ 73.161439][ T5003] BTRFS info (device loop0): has skinny extents [ 73.172888][ T5003] BTRFS info (device loop0): enabling ssd optimizations [ 73.186497][ T5003] FAULT_INJECTION: forcing a failure. [ 73.186497][ T5003] name failslab, interval 1, probability 0, space 0, times 0 [ 73.190095][ T5003] CPU: 0 PID: 5003 Comm: syz.0.19 Tainted: G W syzkaller #0 [ 73.191554][ T5003] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/18/2026 [ 73.193308][ T5003] Call trace: [ 73.193830][ T5003] dump_backtrace+0x0/0x458 [ 73.194610][ T5003] show_stack+0x2c/0x3c [ 73.195286][ T5003] __dump_stack+0x30/0x40 [ 73.195976][ T5003] dump_stack_lvl+0xf4/0x15c [ 73.196739][ T5003] dump_stack+0x1c/0x5c [ 73.197410][ T5003] should_fail+0x3bc/0x514 [ 73.198071][ T5003] __should_failslab+0xbc/0x10c [ 73.198898][ T5003] should_failslab+0x10/0x28 [ 73.199677][ T5003] slab_pre_alloc_hook+0x64/0xe8 [ 73.200519][ T5003] kmem_cache_alloc_trace+0x98/0x3ec [ 73.201507][ T5003] btrfs_delete_delayed_dir_index+0x22c/0x56c [ 73.202512][ T5003] __btrfs_unlink_inode+0x350/0xaec [ 73.203376][ T5003] btrfs_unlink+0x108/0x258 [ 73.204173][ T5003] vfs_unlink+0x2e0/0x4f4 [ 73.204919][ T5003] do_unlinkat+0x328/0x618 [ 73.205672][ T5003] __arm64_sys_unlinkat+0xe0/0xfc [ 73.206581][ T5003] invoke_syscall+0x98/0x2b0 [ 73.207385][ T5003] el0_svc_common+0x138/0x258 [ 73.208226][ T5003] do_el0_svc+0x58/0x13c [ 73.208960][ T5003] el0_svc+0x78/0x1d0 [ 73.209648][ T5003] el0t_64_sync_handler+0xcc/0xe4 [ 73.210478][ T5003] el0t_64_sync+0x1a0/0x1a4 [ 73.213828][ T5003] ------------[ cut here ]------------ [ 73.214762][ T5003] WARNING: CPU: 0 PID: 5003 at fs/btrfs/inode.c:4182 __btrfs_unlink_inode+0x904/0xaec [ 73.216315][ T5003] Modules linked in: [ 73.216917][ T5003] CPU: 0 PID: 5003 Comm: syz.0.19 Tainted: G W syzkaller #0 [ 73.218409][ T5003] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/18/2026 [ 73.220187][ T5003] pstate: 62400005 (nZCv daif +PAN -UAO +TCO -DIT -SSBS BTYPE=--) [ 73.221517][ T5003] pc : __btrfs_unlink_inode+0x904/0xaec [ 73.222445][ T5003] lr : __btrfs_unlink_inode+0x904/0xaec [ 73.223343][ T5003] sp : ffff80001ffe7a60 [ 73.224026][ T5003] x29: ffff80001ffe7b10 x28: ffff0000ca572000 x27: ffff0000ec998810 [ 73.225393][ T5003] x26: 0000000000000100 x25: 00000000fffffff4 x24: ffff0000c2b7d160 [ 73.226766][ T5003] x23: ffff700003ffcf54 x22: dfff800000000000 x21: ffff0000ec82c4b0 [ 73.228185][ T5003] x20: ffff0000de733528 x19: 1fffe0001bce66a5 x18: 0000000000000001 [ 73.229544][ T5003] x17: 0000000000000000 x16: ffff80001125f448 x15: 00000000ffffffff [ 73.230949][ T5003] x14: 0000000000000001 x13: 1fffe000341f05ab x12: 0000000000ff0100 [ 73.232338][ T5003] x11: 0000000000000000 x10: 0000000000000000 x9 : 93f2893a61149000 [ 73.233621][ T5003] x8 : 93f2893a61149000 x7 : 0000000000000001 x6 : 0000000000000001 [ 73.234950][ T5003] x5 : ffff80001ffe7378 x4 : ffff80001437f3e0 x3 : ffff800008509220 [ 73.236282][ T5003] x2 : 0000000000000001 x1 : 0000000100000000 x0 : 0000000000000026 [ 73.237596][ T5003] Call trace: [ 73.238087][ T5003] __btrfs_unlink_inode+0x904/0xaec [ 73.239018][ T5003] btrfs_unlink+0x108/0x258 [ 73.239782][ T5003] vfs_unlink+0x2e0/0x4f4 [ 73.240500][ T5003] do_unlinkat+0x328/0x618 [ 73.241233][ T5003] __arm64_sys_unlinkat+0xe0/0xfc [ 73.242062][ T5003] invoke_syscall+0x98/0x2b0 [ 73.242839][ T5003] el0_svc_common+0x138/0x258 [ 73.243656][ T5003] do_el0_svc+0x58/0x13c [ 73.244334][ T5003] el0_svc+0x78/0x1d0 [ 73.245000][ T5003] el0t_64_sync_handler+0xcc/0xe4 [ 73.245850][ T5003] el0t_64_sync+0x1a0/0x1a4 [ 73.246560][ T5003] irq event stamp: 80286 [ 73.247224][ T5003] hardirqs last enabled at (80285): [] __up_console_sem+0xb4/0xfc [ 73.248792][ T5003] hardirqs last disabled at (80286): [] el1_dbg+0x24/0x80 [ 73.250281][ T5003] softirqs last enabled at (80266): [] handle_softirqs+0xa40/0xbe4 [ 73.251915][ T5003] softirqs last disabled at (80243): [] __irq_exit_rcu+0x240/0x43c [ 73.253523][ T5003] ---[ end trace 98697d1551805d96 ]--- [ 73.258879][ T5003] BTRFS: error (device loop0) in __btrfs_unlink_inode:4182: errno=-12 Out of memory [ 73.260460][ T5003] BTRFS info (device loop0): forced readonly [ 73.287379][ T354] batman_adv: batadv0: Interface deactivated: batadv_slave_0 [ 73.288705][ T354] batman_adv: batadv0: Removing interface: batadv_slave_0 [ 73.291503][ T354] batman_adv: batadv0: Interface deactivated: batadv_slave_1 [ 73.292664][ T354] batman_adv: batadv0: Removing interface: batadv_slave_1 [ 73.294913][ T354] device bridge_slave_1 left promiscuous mode [ 73.296021][ T354] bridge0: port 2(bridge_slave_1) entered disabled state [ 73.338497][ T354] device bridge_slave_0 left promiscuous mode [ 73.339733][ T354] bridge0: port 1(bridge_slave_0) entered disabled state [ 73.470788][ T5026] loop0: detected capacity change from 0 to 32768 [ 73.487205][ T354] device veth1_macvtap left promiscuous mode [ 73.488344][ T354] device veth0_macvtap left promiscuous mode [ 73.489427][ T354] device veth1_vlan left promiscuous mode [ 73.490459][ T354] device veth0_vlan left promiscuous mode [ 73.515562][ T5026] BTRFS: device fsid c9fe44da-de57-406a-8241-57ec7d4412cf devid 1 transid 8 /dev/loop0 scanned by syz.0.20 (5026) [ 73.528450][ T5026] BTRFS info (device loop0): using crc32c (crc32c-generic) checksum algorithm [ 73.529801][ T5026] BTRFS info (device loop0): using free space tree [ 73.530851][ T5026] BTRFS info (device loop0): has skinny extents [ 73.572898][ T5026] BTRFS info (device loop0): enabling ssd optimizations [ 73.580428][ T5026] FAULT_INJECTION: forcing a failure. [ 73.580428][ T5026] name failslab, interval 1, probability 0, space 0, times 0 [ 73.582480][ T5026] CPU: 1 PID: 5026 Comm: syz.0.20 Tainted: G W syzkaller #0 [ 73.583934][ T5026] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/18/2026 [ 73.585572][ T5026] Call trace: [ 73.586098][ T5026] dump_backtrace+0x0/0x458 [ 73.586860][ T5026] show_stack+0x2c/0x3c [ 73.587547][ T5026] __dump_stack+0x30/0x40 [ 73.588285][ T5026] dump_stack_lvl+0xf4/0x15c [ 73.589049][ T5026] dump_stack+0x1c/0x5c [ 73.589742][ T5026] should_fail+0x3bc/0x514 [ 73.590434][ T5026] __should_failslab+0xbc/0x10c [ 73.591207][ T5026] should_failslab+0x10/0x28 [ 73.591898][ T5026] slab_pre_alloc_hook+0x64/0xe8 [ 73.592667][ T5026] kmem_cache_alloc_trace+0x98/0x3ec [ 73.593564][ T5026] btrfs_delete_delayed_dir_index+0x22c/0x56c [ 73.594585][ T5026] __btrfs_unlink_inode+0x350/0xaec [ 73.595422][ T5026] btrfs_unlink+0x108/0x258 [ 73.596164][ T5026] vfs_unlink+0x2e0/0x4f4 [ 73.596877][ T5026] do_unlinkat+0x328/0x618 [ 73.597618][ T5026] __arm64_sys_unlinkat+0xe0/0xfc [ 73.598438][ T5026] invoke_syscall+0x98/0x2b0 [ 73.599234][ T5026] el0_svc_common+0x138/0x258 [ 73.600039][ T5026] do_el0_svc+0x58/0x13c [ 73.600719][ T5026] el0_svc+0x78/0x1d0 [ 73.601385][ T5026] el0t_64_sync_handler+0xcc/0xe4 [ 73.602213][ T5026] el0t_64_sync+0x1a0/0x1a4 [ 73.606009][ T5026] ------------[ cut here ]------------ [ 73.607045][ T5026] WARNING: CPU: 1 PID: 5026 at fs/btrfs/inode.c:4182 __btrfs_unlink_inode+0x904/0xaec [ 73.608617][ T5026] Modules linked in: [ 73.609243][ T5026] CPU: 1 PID: 5026 Comm: syz.0.20 Tainted: G W syzkaller #0 [ 73.610633][ T5026] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/18/2026 [ 73.612365][ T5026] pstate: 62400005 (nZCv daif +PAN -UAO +TCO -DIT -SSBS BTYPE=--) [ 73.613734][ T5026] pc : __btrfs_unlink_inode+0x904/0xaec [ 73.614730][ T5026] lr : __btrfs_unlink_inode+0x904/0xaec [ 73.615662][ T5026] sp : ffff8000204a7a60 [ 73.616397][ T5026] x29: ffff8000204a7b10 x28: ffff0000c9d04000 x27: ffff0000e2528810 [ 73.617757][ T5026] x26: 0000000000000100 x25: 00000000fffffff4 x24: ffff0000dcccae70 [ 73.619132][ T5026] x23: ffff700004094f54 x22: dfff800000000000 x21: ffff0000e24af5c0 [ 73.620501][ T5026] x20: ffff0000de7d03c8 x19: 1fffe0001bcfa079 x18: 0000000000000001 [ 73.621859][ T5026] x17: 0000000000000000 x16: ffff80001125f448 x15: 00000000ffffffff [ 73.623242][ T5026] x14: 0000000000000001 x13: 1fffe000341f47ab x12: 0000000000ff0100 [ 73.624647][ T5026] x11: 0000000000000000 x10: 0000000000000000 x9 : cf7fa084bf074300 [ 73.625998][ T5026] x8 : cf7fa084bf074300 x7 : 0000000000000001 x6 : 0000000000000001 [ 73.627328][ T5026] x5 : ffff8000204a7378 x4 : ffff80001437f3e0 x3 : ffff800008509220 [ 73.628743][ T5026] x2 : 0000000000000001 x1 : 0000000100000000 x0 : 0000000000000026 [ 73.630093][ T5026] Call trace: [ 73.630622][ T5026] __btrfs_unlink_inode+0x904/0xaec [ 73.631518][ T5026] btrfs_unlink+0x108/0x258 [ 73.632285][ T5026] vfs_unlink+0x2e0/0x4f4 [ 73.633015][ T5026] do_unlinkat+0x328/0x618 [ 73.633804][ T5026] __arm64_sys_unlinkat+0xe0/0xfc [ 73.634667][ T5026] invoke_syscall+0x98/0x2b0 [ 73.635441][ T5026] el0_svc_common+0x138/0x258 [ 73.636233][ T5026] do_el0_svc+0x58/0x13c [ 73.636984][ T5026] el0_svc+0x78/0x1d0 [ 73.637638][ T5026] el0t_64_sync_handler+0xcc/0xe4 [ 73.638542][ T5026] el0t_64_sync+0x1a0/0x1a4 [ 73.639228][ T5026] irq event stamp: 81266 [ 73.639924][ T5026] hardirqs last enabled at (81265): [] __up_console_sem+0xb4/0xfc [ 73.641555][ T5026] hardirqs last disabled at (81266): [] el1_dbg+0x24/0x80 [ 73.643095][ T5026] softirqs last enabled at (81240): [] handle_softirqs+0xa40/0xbe4 [ 73.644759][ T5026] softirqs last disabled at (81205): [] __irq_exit_rcu+0x240/0x43c [ 73.646371][ T5026] ---[ end trace 98697d1551805d97 ]--- [ 73.652255][ T5026] BTRFS: error (device loop0) in __btrfs_unlink_inode:4182: errno=-12 Out of memory [ 73.653856][ T5026] BTRFS info (device loop0): forced readonly [ 73.729277][ T354] team0 (unregistering): Port device team_slave_1 removed [ 73.746919][ T354] team0 (unregistering): Port device team_slave_0 removed [ 73.751525][ T354] bond0 (unregistering): (slave bond_slave_1): Releasing backup interface [ 73.794138][ T354] bond0 (unregistering): (slave bond_slave_0): Releasing backup interface [ 73.868388][ T5050] loop0: detected capacity change from 0 to 32768 [ 73.894107][ T354] bond0 (unregistering): Released all slaves [ 73.952091][ T5050] BTRFS: device fsid c9fe44da-de57-406a-8241-57ec7d4412cf devid 1 transid 8 /dev/loop0 scanned by syz.0.21 (5050) [ 73.955540][ T5050] BTRFS info (device loop0): using crc32c (crc32c-generic) checksum algorithm [ 73.957727][ T5050] BTRFS info (device loop0): using free space tree [ 73.958742][ T5050] BTRFS info (device loop0): has skinny extents [ 73.966100][ T5050] BTRFS info (device loop0): enabling ssd optimizations [ 73.971765][ T5050] FAULT_INJECTION: forcing a failure. [ 73.971765][ T5050] name failslab, interval 1, probability 0, space 0, times 0 [ 73.973689][ T5050] CPU: 0 PID: 5050 Comm: syz.0.21 Tainted: G W syzkaller #0 [ 73.975071][ T5050] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/18/2026 [ 73.977010][ T5050] Call trace: [ 73.977577][ T5050] dump_backtrace+0x0/0x458 [ 73.978357][ T5050] show_stack+0x2c/0x3c [ 73.979084][ T5050] __dump_stack+0x30/0x40 [ 73.979817][ T5050] dump_stack_lvl+0xf4/0x15c [ 73.980574][ T5050] dump_stack+0x1c/0x5c [ 73.981271][ T5050] should_fail+0x3bc/0x514 [ 73.982007][ T5050] __should_failslab+0xbc/0x10c [ 73.982750][ T5050] should_failslab+0x10/0x28 [ 73.983472][ T5050] slab_pre_alloc_hook+0x64/0xe8 [ 73.984259][ T5050] kmem_cache_alloc+0x94/0x3d4 [ 73.984979][ T5050] btrfs_alloc_path+0x5c/0x68 [ 73.985774][ T5050] __btrfs_unlink_inode+0x1dc/0xaec [ 73.986714][ T5050] btrfs_unlink+0x108/0x258 [ 73.987461][ T5050] vfs_unlink+0x2e0/0x4f4 [ 73.988162][ T5050] do_unlinkat+0x328/0x618 [ 73.988845][ T5050] __arm64_sys_unlinkat+0xe0/0xfc [ 73.989684][ T5050] invoke_syscall+0x98/0x2b0 [ 73.990491][ T5050] el0_svc_common+0x138/0x258 [ 73.991322][ T5050] do_el0_svc+0x58/0x13c [ 73.992103][ T5050] el0_svc+0x78/0x1d0 [ 73.992799][ T5050] el0t_64_sync_handler+0xcc/0xe4 [ 73.993629][ T5050] el0t_64_sync+0x1a0/0x1a4 [ 74.162413][ T5073] loop0: detected capacity change from 0 to 32768 [ 74.200115][ T5073] BTRFS: device fsid c9fe44da-de57-406a-8241-57ec7d4412cf devid 1 transid 8 /dev/loop0 scanned by syz.0.22 (5073) [ 74.221199][ T5073] BTRFS info (device loop0): using crc32c (crc32c-generic) checksum algorithm [ 74.222609][ T5073] BTRFS info (device loop0): using free space tree [ 74.223624][ T5073] BTRFS info (device loop0): has skinny extents [ 74.233394][ T5073] BTRFS info (device loop0): enabling ssd optimizations [ 74.238155][ T5073] FAULT_INJECTION: forcing a failure. [ 74.238155][ T5073] name failslab, interval 1, probability 0, space 0, times 0 [ 74.240359][ T5073] CPU: 1 PID: 5073 Comm: syz.0.22 Tainted: G W syzkaller #0 [ 74.241733][ T5073] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/18/2026 [ 74.243431][ T5073] Call trace: [ 74.243973][ T5073] dump_backtrace+0x0/0x458 [ 74.244715][ T5073] show_stack+0x2c/0x3c [ 74.245371][ T5073] __dump_stack+0x30/0x40 [ 74.246098][ T5073] dump_stack_lvl+0xf4/0x15c [ 74.246912][ T5073] dump_stack+0x1c/0x5c [ 74.247633][ T5073] should_fail+0x3bc/0x514 [ 74.248427][ T5073] __should_failslab+0xbc/0x10c [ 74.249223][ T5073] should_failslab+0x10/0x28 [ 74.249976][ T5073] slab_pre_alloc_hook+0x64/0xe8 [ 74.250812][ T5073] kmem_cache_alloc_trace+0x98/0x3ec [ 74.251703][ T5073] btrfs_delete_delayed_dir_index+0x22c/0x56c [ 74.252765][ T5073] __btrfs_unlink_inode+0x350/0xaec [ 74.253671][ T5073] btrfs_unlink+0x108/0x258 [ 74.254492][ T5073] vfs_unlink+0x2e0/0x4f4 [ 74.255179][ T5073] do_unlinkat+0x328/0x618 [ 74.255903][ T5073] __arm64_sys_unlinkat+0xe0/0xfc [ 74.256737][ T5073] invoke_syscall+0x98/0x2b0 [ 74.257556][ T5073] el0_svc_common+0x138/0x258 [ 74.258315][ T5073] do_el0_svc+0x58/0x13c [ 74.259036][ T5073] el0_svc+0x78/0x1d0 [ 74.259769][ T5073] el0t_64_sync_handler+0xcc/0xe4 [ 74.260604][ T5073] el0t_64_sync+0x1a0/0x1a4 [ 74.263144][ T5073] ------------[ cut here ]------------ [ 74.264109][ T5073] WARNING: CPU: 1 PID: 5073 at fs/btrfs/inode.c:4182 __btrfs_unlink_inode+0x904/0xaec [ 74.265590][ T5073] Modules linked in: [ 74.266218][ T5073] CPU: 1 PID: 5073 Comm: syz.0.22 Tainted: G W syzkaller #0 [ 74.267547][ T5073] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/18/2026 [ 74.269143][ T5073] pstate: 62400005 (nZCv daif +PAN -UAO +TCO -DIT -SSBS BTYPE=--) [ 74.270391][ T5073] pc : __btrfs_unlink_inode+0x904/0xaec [ 74.271227][ T5073] lr : __btrfs_unlink_inode+0x904/0xaec [ 74.272122][ T5073] sp : ffff800020777a60 [ 74.272794][ T5073] x29: ffff800020777b10 x28: ffff0000ec5e2000 x27: ffff0000e2528c10 [ 74.274116][ T5073] x26: 0000000000000100 x25: 00000000fffffff4 x24: ffff0000c97c9b00 [ 74.275551][ T5073] x23: ffff7000040eef54 x22: dfff800000000000 x21: ffff0000ec9813a0 [ 74.276835][ T5073] x20: ffff0000de7d0528 x19: 1fffe0001bcfa0a5 x18: 0000000000000001 [ 74.278206][ T5073] x17: 0000000000000000 x16: ffff80001125f448 x15: 00000000ffffffff [ 74.279614][ T5073] x14: 0000000000000001 x13: 1fffe000341f47ab x12: 0000000000ff0100 [ 74.280968][ T5073] x11: 0000000000000000 x10: 0000000000000000 x9 : 83449f646408a700 [ 74.282476][ T5073] x8 : 83449f646408a700 x7 : 0000000000000001 x6 : 0000000000000001 [ 74.283869][ T5073] x5 : ffff800020777378 x4 : ffff80001437f3e0 x3 : ffff800008509220 [ 74.285304][ T5073] x2 : 0000000000000001 x1 : 0000000100000000 x0 : 0000000000000026 [ 74.286690][ T5073] Call trace: [ 74.287287][ T5073] __btrfs_unlink_inode+0x904/0xaec [ 74.288153][ T5073] btrfs_unlink+0x108/0x258 [ 74.288924][ T5073] vfs_unlink+0x2e0/0x4f4 [ 74.289656][ T5073] do_unlinkat+0x328/0x618 [ 74.290429][ T5073] __arm64_sys_unlinkat+0xe0/0xfc [ 74.291289][ T5073] invoke_syscall+0x98/0x2b0 [ 74.292064][ T5073] el0_svc_common+0x138/0x258 [ 74.292850][ T5073] do_el0_svc+0x58/0x13c [ 74.293572][ T5073] el0_svc+0x78/0x1d0 [ 74.294263][ T5073] el0t_64_sync_handler+0xcc/0xe4 [ 74.295121][ T5073] el0t_64_sync+0x1a0/0x1a4 [ 74.295838][ T5073] irq event stamp: 80382 [ 74.296518][ T5073] hardirqs last enabled at (80381): [] __up_console_sem+0xb4/0xfc [ 74.298091][ T5073] hardirqs last disabled at (80382): [] el1_dbg+0x24/0x80 [ 74.299575][ T5073] softirqs last enabled at (80362): [] handle_softirqs+0xa40/0xbe4 [ 74.301229][ T5073] softirqs last disabled at (80337): [] __irq_exit_rcu+0x240/0x43c [ 74.302907][ T5073] ---[ end trace 98697d1551805d98 ]--- [ 74.305879][ T5073] BTRFS: error (device loop0) in __btrfs_unlink_inode:4182: errno=-12 Out of memory [ 74.307630][ T5073] BTRFS info (device loop0): forced readonly [ 74.327535][ T5071] Bluetooth: hci0: command 0x0419 tx timeout [ 74.472535][ T5097] loop0: detected capacity change from 0 to 32768 [ 74.520818][ T5097] BTRFS: device fsid c9fe44da-de57-406a-8241-57ec7d4412cf devid 1 transid 8 /dev/loop0 scanned by syz.0.23 (5097) [ 74.524105][ T5097] BTRFS info (device loop0): using crc32c (crc32c-generic) checksum algorithm [ 74.525634][ T5097] BTRFS info (device loop0): using free space tree [ 74.526764][ T5097] BTRFS info (device loop0): has skinny extents [ 74.536203][ T5097] BTRFS info (device loop0): enabling ssd optimizations [ 74.549610][ T5097] FAULT_INJECTION: forcing a failure. [ 74.549610][ T5097] name failslab, interval 1, probability 0, space 0, times 0 [ 74.551737][ T5097] CPU: 1 PID: 5097 Comm: syz.0.23 Tainted: G W syzkaller #0 [ 74.553272][ T5097] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/18/2026 [ 74.554953][ T5097] Call trace: [ 74.555460][ T5097] dump_backtrace+0x0/0x458 [ 74.556182][ T5097] show_stack+0x2c/0x3c [ 74.556939][ T5097] __dump_stack+0x30/0x40 [ 74.557673][ T5097] dump_stack_lvl+0xf4/0x15c [ 74.558472][ T5097] dump_stack+0x1c/0x5c [ 74.559145][ T5097] should_fail+0x3bc/0x514 [ 74.559906][ T5097] __should_failslab+0xbc/0x10c [ 74.560695][ T5097] should_failslab+0x10/0x28 [ 74.561500][ T5097] slab_pre_alloc_hook+0x64/0xe8 [ 74.562362][ T5097] kmem_cache_alloc_trace+0x98/0x3ec [ 74.563267][ T5097] btrfs_delete_delayed_dir_index+0x22c/0x56c [ 74.564297][ T5097] __btrfs_unlink_inode+0x350/0xaec [ 74.565216][ T5097] btrfs_unlink+0x108/0x258 [ 74.565977][ T5097] vfs_unlink+0x2e0/0x4f4 [ 74.566758][ T5097] do_unlinkat+0x328/0x618 [ 74.567536][ T5097] __arm64_sys_unlinkat+0xe0/0xfc [ 74.568427][ T5097] invoke_syscall+0x98/0x2b0 [ 74.569264][ T5097] el0_svc_common+0x138/0x258 [ 74.570050][ T5097] do_el0_svc+0x58/0x13c [ 74.570759][ T5097] el0_svc+0x78/0x1d0 [ 74.571407][ T5097] el0t_64_sync_handler+0xcc/0xe4 [ 74.572272][ T5097] el0t_64_sync+0x1a0/0x1a4 [ 74.575921][ T5097] ------------[ cut here ]------------ [ 74.576895][ T5097] WARNING: CPU: 1 PID: 5097 at fs/btrfs/inode.c:4182 __btrfs_unlink_inode+0x904/0xaec [ 74.578415][ T5097] Modules linked in: [ 74.579016][ T5097] CPU: 1 PID: 5097 Comm: syz.0.23 Tainted: G W syzkaller #0 [ 74.580533][ T5097] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/18/2026 [ 74.582250][ T5097] pstate: 62400005 (nZCv daif +PAN -UAO +TCO -DIT -SSBS BTYPE=--) [ 74.583592][ T5097] pc : __btrfs_unlink_inode+0x904/0xaec [ 74.584574][ T5097] lr : __btrfs_unlink_inode+0x904/0xaec [ 74.585521][ T5097] sp : ffff800020777a60 [ 74.586267][ T5097] x29: ffff800020777b10 x28: ffff0000d05d0000 x27: ffff0000e2529010 [ 74.587653][ T5097] x26: 0000000000000100 x25: 00000000fffffff4 x24: ffff0000ec4a2b00 [ 74.589040][ T5097] x23: ffff7000040eef54 x22: dfff800000000000 x21: ffff0000ec983ae0 [ 74.590414][ T5097] x20: ffff0000de7d0688 x19: 1fffe0001bcfa0d1 x18: 0000000000000001 [ 74.591883][ T5097] x17: 0000000000000000 x16: ffff80001125f448 x15: 00000000ffffffff [ 74.593292][ T5097] x14: 0000000000000001 x13: 1fffe000341f47ab x12: 0000000000ff0100 [ 74.594676][ T5097] x11: 0000000000000000 x10: 0000000000000000 x9 : 103378afef6ceb00 [ 74.596021][ T5097] x8 : 103378afef6ceb00 x7 : 0000000000000001 x6 : 0000000000000001 [ 74.597386][ T5097] x5 : ffff800020777378 x4 : ffff80001437f3e0 x3 : ffff800008509220 [ 74.598704][ T5097] x2 : 0000000000000001 x1 : 0000000100000000 x0 : 0000000000000026 [ 74.600043][ T5097] Call trace: [ 74.600591][ T5097] __btrfs_unlink_inode+0x904/0xaec [ 74.601504][ T5097] btrfs_unlink+0x108/0x258 [ 74.602248][ T5097] vfs_unlink+0x2e0/0x4f4 [ 74.602934][ T5097] do_unlinkat+0x328/0x618 [ 74.603656][ T5097] __arm64_sys_unlinkat+0xe0/0xfc [ 74.604553][ T5097] invoke_syscall+0x98/0x2b0 [ 74.605315][ T5097] el0_svc_common+0x138/0x258 [ 74.606139][ T5097] do_el0_svc+0x58/0x13c [ 74.606857][ T5097] el0_svc+0x78/0x1d0 [ 74.607527][ T5097] el0t_64_sync_handler+0xcc/0xe4 [ 74.608392][ T5097] el0t_64_sync+0x1a0/0x1a4 [ 74.609121][ T5097] irq event stamp: 80870 [ 74.609815][ T5097] hardirqs last enabled at (80869): [] __up_console_sem+0xb4/0xfc [ 74.611415][ T5097] hardirqs last disabled at (80870): [] el1_dbg+0x24/0x80 [ 74.612977][ T5097] softirqs last enabled at (80850): [] handle_softirqs+0xa40/0xbe4 [ 74.614561][ T5097] softirqs last disabled at (80769): [] __irq_exit_rcu+0x240/0x43c [ 74.616179][ T5097] ---[ end trace 98697d1551805d99 ]--- [ 74.620689][ T5097] BTRFS: error (device loop0) in __btrfs_unlink_inode:4182: errno=-12 Out of memory [ 74.622334][ T5097] BTRFS info (device loop0): forced readonly [ 74.776318][ T5119] loop0: detected capacity change from 0 to 32768 [ 74.781688][ T5119] BTRFS: device fsid c9fe44da-de57-406a-8241-57ec7d4412cf devid 1 transid 8 /dev/loop0 scanned by syz.0.24 (5119) [ 74.785214][ T5119] BTRFS info (device loop0): using crc32c (crc32c-generic) checksum algorithm [ 74.786782][ T5119] BTRFS info (device loop0): using free space tree [ 74.788329][ T5119] BTRFS info (device loop0): has skinny extents [ 74.797558][ T5119] BTRFS info (device loop0): enabling ssd optimizations [ 74.801604][ T5119] FAULT_INJECTION: forcing a failure. [ 74.801604][ T5119] name failslab, interval 1, probability 0, space 0, times 0 [ 74.803622][ T5119] CPU: 1 PID: 5119 Comm: syz.0.24 Tainted: G W syzkaller #0 [ 74.805052][ T5119] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/18/2026 [ 74.806708][ T5119] Call trace: [ 74.807321][ T5119] dump_backtrace+0x0/0x458 [ 74.808092][ T5119] show_stack+0x2c/0x3c [ 74.808823][ T5119] __dump_stack+0x30/0x40 [ 74.809563][ T5119] dump_stack_lvl+0xf4/0x15c [ 74.810363][ T5119] dump_stack+0x1c/0x5c [ 74.811133][ T5119] should_fail+0x3bc/0x514 [ 74.811889][ T5119] __should_failslab+0xbc/0x10c [ 74.812767][ T5119] should_failslab+0x10/0x28 [ 74.813529][ T5119] slab_pre_alloc_hook+0x64/0xe8 [ 74.814367][ T5119] kmem_cache_alloc_trace+0x98/0x3ec [ 74.815279][ T5119] btrfs_delete_delayed_dir_index+0x22c/0x56c [ 74.816279][ T5119] __btrfs_unlink_inode+0x350/0xaec [ 74.817161][ T5119] btrfs_unlink+0x108/0x258 [ 74.817934][ T5119] vfs_unlink+0x2e0/0x4f4 [ 74.818647][ T5119] do_unlinkat+0x328/0x618 [ 74.819453][ T5119] __arm64_sys_unlinkat+0xe0/0xfc [ 74.820356][ T5119] invoke_syscall+0x98/0x2b0 [ 74.821166][ T5119] el0_svc_common+0x138/0x258 [ 74.821974][ T5119] do_el0_svc+0x58/0x13c [ 74.822665][ T5119] el0_svc+0x78/0x1d0 [ 74.823328][ T5119] el0t_64_sync_handler+0xcc/0xe4 [ 74.824188][ T5119] el0t_64_sync+0x1a0/0x1a4 [ 74.826813][ T5119] ------------[ cut here ]------------ [ 74.830454][ T5119] WARNING: CPU: 1 PID: 5119 at fs/btrfs/inode.c:4182 __btrfs_unlink_inode+0x904/0xaec [ 74.831840][ T5119] Modules linked in: [ 74.832451][ T5119] CPU: 1 PID: 5119 Comm: syz.0.24 Tainted: G W syzkaller #0 [ 74.833801][ T5119] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/18/2026 [ 74.835459][ T5119] pstate: 62400005 (nZCv daif +PAN -UAO +TCO -DIT -SSBS BTYPE=--) [ 74.836766][ T5119] pc : __btrfs_unlink_inode+0x904/0xaec [ 74.837630][ T5119] lr : __btrfs_unlink_inode+0x904/0xaec [ 74.838539][ T5119] sp : ffff800020977a60 [ 74.839270][ T5119] x29: ffff800020977b10 x28: ffff0000d1334000 x27: ffff0000e2529410 [ 74.840715][ T5119] x26: 0000000000000100 x25: 00000000fffffff4 x24: ffff0000cbcc9bb0 [ 74.842031][ T5119] x23: ffff70000412ef54 x22: dfff800000000000 x21: ffff0000ec986220 [ 74.843393][ T5119] x20: ffff0000de7d07e8 x19: 1fffe0001bcfa0fd x18: 0000000000000001 [ 74.844728][ T5119] x17: 0000000000000000 x16: ffff80001125f448 x15: 00000000ffffffff [ 74.846123][ T5119] x14: 0000000000000001 x13: 1fffe000341f47ab x12: 0000000000ff0100 [ 74.847595][ T5119] x11: 0000000000000000 x10: 0000000000000000 x9 : 74ca31c10faeaa00 [ 74.849065][ T5119] x8 : 74ca31c10faeaa00 x7 : 0000000000000001 x6 : 0000000000000001 [ 74.850439][ T5119] x5 : ffff800020977378 x4 : ffff80001437f3e0 x3 : ffff800008509220 [ 74.851856][ T5119] x2 : 0000000000000001 x1 : 0000000100000000 x0 : 0000000000000026 [ 74.853242][ T5119] Call trace: [ 74.853782][ T5119] __btrfs_unlink_inode+0x904/0xaec [ 74.854652][ T5119] btrfs_unlink+0x108/0x258 [ 74.855419][ T5119] vfs_unlink+0x2e0/0x4f4 [ 74.856106][ T5119] do_unlinkat+0x328/0x618 [ 74.856847][ T5119] __arm64_sys_unlinkat+0xe0/0xfc [ 74.857720][ T5119] invoke_syscall+0x98/0x2b0 [ 74.858493][ T5119] el0_svc_common+0x138/0x258 [ 74.859263][ T5119] do_el0_svc+0x58/0x13c [ 74.859940][ T5119] el0_svc+0x78/0x1d0 [ 74.860604][ T5119] el0t_64_sync_handler+0xcc/0xe4 [ 74.861454][ T5119] el0t_64_sync+0x1a0/0x1a4 [ 74.862216][ T5119] irq event stamp: 80530 [ 74.862932][ T5119] hardirqs last enabled at (80529): [] __up_console_sem+0xb4/0xfc [ 74.864538][ T5119] hardirqs last disabled at (80530): [] el1_dbg+0x24/0x80 [ 74.866064][ T5119] softirqs last enabled at (80518): [] handle_softirqs+0xa40/0xbe4 [ 74.867768][ T5119] softirqs last disabled at (80371): [] __irq_exit_rcu+0x240/0x43c [ 74.869403][ T5119] ---[ end trace 98697d1551805d9a ]--- [ 74.872310][ T5119] BTRFS: error (device loop0) in __btrfs_unlink_inode:4182: errno=-12 Out of memory [ 74.873825][ T5119] BTRFS info (device loop0): forced readonly [ 75.041488][ T5141] BTRFS: device fsid c9fe44da-de57-406a-8241-57ec7d4412cf devid 1 transid 8 /dev/loop0 scanned by syz.0.25 (5141) [ 75.044649][ T5141] BTRFS info (device loop0): using crc32c (crc32c-generic) checksum algorithm [ 75.046094][ T5141] BTRFS info (device loop0): using free space tree [ 75.047837][ T5141] BTRFS info (device loop0): has skinny extents [ 75.066010][ T5141] BTRFS info (device loop0): enabling ssd optimizations [ 75.071051][ T5141] FAULT_INJECTION: forcing a failure. [ 75.071051][ T5141] name failslab, interval 1, probability 0, space 0, times 0 [ 75.073244][ T5141] CPU: 0 PID: 5141 Comm: syz.0.25 Tainted: G W syzkaller #0 [ 75.074648][ T5141] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/18/2026 [ 75.076357][ T5141] Call trace: [ 75.076924][ T5141] dump_backtrace+0x0/0x458 [ 75.077670][ T5141] show_stack+0x2c/0x3c [ 75.078407][ T5141] __dump_stack+0x30/0x40 [ 75.079149][ T5141] dump_stack_lvl+0xf4/0x15c [ 75.079910][ T5141] dump_stack+0x1c/0x5c [ 75.080630][ T5141] should_fail+0x3bc/0x514 [ 75.081340][ T5141] __should_failslab+0xbc/0x10c [ 75.082196][ T5141] should_failslab+0x10/0x28 [ 75.082944][ T5141] slab_pre_alloc_hook+0x64/0xe8 [ 75.083761][ T5141] kmem_cache_alloc_trace+0x98/0x3ec [ 75.084595][ T5141] btrfs_delete_delayed_dir_index+0x22c/0x56c [ 75.085611][ T5141] __btrfs_unlink_inode+0x350/0xaec [ 75.086479][ T5141] btrfs_unlink+0x108/0x258 [ 75.087172][ T5141] vfs_unlink+0x2e0/0x4f4 [ 75.087908][ T5141] do_unlinkat+0x328/0x618 [ 75.088674][ T5141] __arm64_sys_unlinkat+0xe0/0xfc [ 75.089552][ T5141] invoke_syscall+0x98/0x2b0 [ 75.090311][ T5141] el0_svc_common+0x138/0x258 [ 75.091106][ T5141] do_el0_svc+0x58/0x13c [ 75.091821][ T5141] el0_svc+0x78/0x1d0 [ 75.092523][ T5141] el0t_64_sync_handler+0xcc/0xe4 [ 75.093398][ T5141] el0t_64_sync+0x1a0/0x1a4 [ 75.098288][ T5141] ------------[ cut here ]------------ [ 75.099312][ T5141] WARNING: CPU: 0 PID: 5141 at fs/btrfs/inode.c:4182 __btrfs_unlink_inode+0x904/0xaec [ 75.100903][ T5141] Modules linked in: [ 75.101605][ T5141] CPU: 0 PID: 5141 Comm: syz.0.25 Tainted: G W syzkaller #0 [ 75.102989][ T5141] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/18/2026 [ 75.104621][ T5141] pstate: 62400005 (nZCv daif +PAN -UAO +TCO -DIT -SSBS BTYPE=--) [ 75.105978][ T5141] pc : __btrfs_unlink_inode+0x904/0xaec [ 75.106861][ T5141] lr : __btrfs_unlink_inode+0x904/0xaec [ 75.107781][ T5141] sp : ffff800020977a60 [ 75.108442][ T5141] x29: ffff800020977b10 x28: ffff0000d5a60000 x27: ffff0000ec999010 [ 75.109760][ T5141] x26: 0000000000000100 x25: 00000000fffffff4 x24: ffff0000ca0b9bb0 [ 75.111152][ T5141] x23: ffff70000412ef54 x22: dfff800000000000 x21: ffff0000ec879d70 [ 75.112594][ T5141] x20: ffff0000de733948 x19: 1fffe0001bce6729 x18: 0000000000000001 [ 75.113965][ T5141] x17: 0000000000000000 x16: ffff80001125f448 x15: 00000000ffffffff [ 75.115398][ T5141] x14: 0000000000000001 x13: 1fffe000341f05ab x12: 0000000000ff0100 [ 75.116807][ T5141] x11: 0000000000000000 x10: 0000000000000000 x9 : b966e7e44a9ba100 [ 75.118118][ T5141] x8 : b966e7e44a9ba100 x7 : 0000000000000001 x6 : 0000000000000001 [ 75.119464][ T5141] x5 : ffff800020977378 x4 : ffff80001437f3e0 x3 : ffff800008509220 [ 75.120846][ T5141] x2 : 0000000000000001 x1 : 0000000100000000 x0 : 0000000000000026 [ 75.122257][ T5141] Call trace: [ 75.122782][ T5141] __btrfs_unlink_inode+0x904/0xaec [ 75.123646][ T5141] btrfs_unlink+0x108/0x258 [ 75.124379][ T5141] vfs_unlink+0x2e0/0x4f4 [ 75.125141][ T5141] do_unlinkat+0x328/0x618 [ 75.125794][ T5141] __arm64_sys_unlinkat+0xe0/0xfc [ 75.126752][ T5141] invoke_syscall+0x98/0x2b0 [ 75.127567][ T5141] el0_svc_common+0x138/0x258 [ 75.128351][ T5141] do_el0_svc+0x58/0x13c [ 75.129059][ T5141] el0_svc+0x78/0x1d0 [ 75.129765][ T5141] el0t_64_sync_handler+0xcc/0xe4 [ 75.130608][ T5141] el0t_64_sync+0x1a0/0x1a4 [ 75.131422][ T5141] irq event stamp: 81738 [ 75.132124][ T5141] hardirqs last enabled at (81737): [] __up_console_sem+0xb4/0xfc [ 75.133799][ T5141] hardirqs last disabled at (81738): [] el1_dbg+0x24/0x80 [ 75.135326][ T5141] softirqs last enabled at (81718): [] handle_softirqs+0xa40/0xbe4 [ 75.136873][ T5141] softirqs last disabled at (81535): [] __irq_exit_rcu+0x240/0x43c [ 75.138489][ T5141] ---[ end trace 98697d1551805d9b ]--- [ 75.142042][ T5141] BTRFS: error (device loop0) in __btrfs_unlink_inode:4182: errno=-12 Out of memory [ 75.143689][ T5141] BTRFS info (device loop0): forced readonly [ 75.322775][ T5163] BTRFS: device fsid c9fe44da-de57-406a-8241-57ec7d4412cf devid 1 transid 8 /dev/loop0 scanned by syz.0.26 (5163) [ 75.334772][ T5163] BTRFS info (device loop0): using crc32c (crc32c-generic) checksum algorithm [ 75.336268][ T5163] BTRFS info (device loop0): using free space tree [ 75.337419][ T5163] BTRFS info (device loop0): has skinny extents [ 75.446528][ T5163] BTRFS info (device loop0): enabling ssd optimizations [ 75.451296][ T5163] FAULT_INJECTION: forcing a failure. [ 75.451296][ T5163] name failslab, interval 1, probability 0, space 0, times 0 [ 75.453343][ T5163] CPU: 1 PID: 5163 Comm: syz.0.26 Tainted: G W syzkaller #0 [ 75.454736][ T5163] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/18/2026 [ 75.456437][ T5163] Call trace: [ 75.456995][ T5163] dump_backtrace+0x0/0x458 [ 75.457729][ T5163] show_stack+0x2c/0x3c [ 75.458452][ T5163] __dump_stack+0x30/0x40 [ 75.459207][ T5163] dump_stack_lvl+0xf4/0x15c [ 75.460039][ T5163] dump_stack+0x1c/0x5c [ 75.460774][ T5163] should_fail+0x3bc/0x514 [ 75.461535][ T5163] __should_failslab+0xbc/0x10c [ 75.462313][ T5163] should_failslab+0x10/0x28 [ 75.463106][ T5163] slab_pre_alloc_hook+0x64/0xe8 [ 75.463986][ T5163] kmem_cache_alloc_trace+0x98/0x3ec [ 75.464919][ T5163] btrfs_delete_delayed_dir_index+0x22c/0x56c [ 75.465959][ T5163] __btrfs_unlink_inode+0x350/0xaec [ 75.466874][ T5163] btrfs_unlink+0x108/0x258 [ 75.467624][ T5163] vfs_unlink+0x2e0/0x4f4 [ 75.468363][ T5163] do_unlinkat+0x328/0x618 [ 75.469091][ T5163] __arm64_sys_unlinkat+0xe0/0xfc [ 75.469930][ T5163] invoke_syscall+0x98/0x2b0 [ 75.470731][ T5163] el0_svc_common+0x138/0x258 [ 75.471505][ T5163] do_el0_svc+0x58/0x13c [ 75.472189][ T5163] el0_svc+0x78/0x1d0 [ 75.472836][ T5163] el0t_64_sync_handler+0xcc/0xe4 [ 75.473649][ T5163] el0t_64_sync+0x1a0/0x1a4 [ 75.475555][ T5163] ------------[ cut here ]------------ [ 75.476605][ T5163] WARNING: CPU: 1 PID: 5163 at fs/btrfs/inode.c:4182 __btrfs_unlink_inode+0x904/0xaec [ 75.478198][ T5163] Modules linked in: [ 75.478846][ T5163] CPU: 1 PID: 5163 Comm: syz.0.26 Tainted: G W syzkaller #0 [ 75.480384][ T5163] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/18/2026 [ 75.482082][ T5163] pstate: 62400005 (nZCv daif +PAN -UAO +TCO -DIT -SSBS BTYPE=--) [ 75.483436][ T5163] pc : __btrfs_unlink_inode+0x904/0xaec [ 75.484356][ T5163] lr : __btrfs_unlink_inode+0x904/0xaec [ 75.485309][ T5163] sp : ffff800020f47a60 [ 75.486037][ T5163] x29: ffff800020f47b10 x28: ffff0000e8580000 x27: ffff0000e2529810 [ 75.487376][ T5163] x26: 0000000000000100 x25: 00000000fffffff4 x24: ffff0000e9db0c60 [ 75.488813][ T5163] x23: ffff7000041e8f54 x22: dfff800000000000 x21: ffff0000e25713a0 [ 75.490244][ T5163] x20: ffff0000de7d0948 x19: 1fffe0001bcfa129 x18: 0000000000000001 [ 75.491671][ T5163] x17: 0000000000000000 x16: ffff80001125f448 x15: 00000000ffffffff [ 75.493019][ T5163] x14: 0000000000000001 x13: 1fffe000341f47ab x12: 0000000000ff0100 [ 75.494382][ T5163] x11: 0000000000000000 x10: 0000000000000000 x9 : b90053b1bbedf900 [ 75.495779][ T5163] x8 : b90053b1bbedf900 x7 : 0000000000000001 x6 : 0000000000000001 [ 75.497114][ T5163] x5 : ffff800020f47378 x4 : ffff80001437f3e0 x3 : ffff800008509220 [ 75.498454][ T5163] x2 : 0000000000000001 x1 : 0000000100000000 x0 : 0000000000000026 [ 75.499742][ T5163] Call trace: [ 75.500309][ T5163] __btrfs_unlink_inode+0x904/0xaec [ 75.501169][ T5163] btrfs_unlink+0x108/0x258 [ 75.501957][ T5163] vfs_unlink+0x2e0/0x4f4 [ 75.502713][ T5163] do_unlinkat+0x328/0x618 [ 75.503510][ T5163] __arm64_sys_unlinkat+0xe0/0xfc [ 75.504363][ T5163] invoke_syscall+0x98/0x2b0 [ 75.505122][ T5163] el0_svc_common+0x138/0x258 [ 75.505921][ T5163] do_el0_svc+0x58/0x13c [ 75.506643][ T5163] el0_svc+0x78/0x1d0 [ 75.507291][ T5163] el0t_64_sync_handler+0xcc/0xe4 [ 75.508096][ T5163] el0t_64_sync+0x1a0/0x1a4 [ 75.508854][ T5163] irq event stamp: 80608 [ 75.509533][ T5163] hardirqs last enabled at (80607): [] __up_console_sem+0xb4/0xfc [ 75.511150][ T5163] hardirqs last disabled at (80608): [] el1_dbg+0x24/0x80 [ 75.512628][ T5163] softirqs last enabled at (80588): [] handle_softirqs+0xa40/0xbe4 [ 75.514217][ T5163] softirqs last disabled at (80493): [] __irq_exit_rcu+0x240/0x43c [ 75.515970][ T5163] ---[ end trace 98697d1551805d9c ]--- [ 75.527893][ T5163] BTRFS: error (device loop0) in __btrfs_unlink_inode:4182: errno=-12 Out of memory [ 75.529572][ T5163] BTRFS info (device loop0): forced readonly [ 75.783344][ T5186] BTRFS: device fsid c9fe44da-de57-406a-8241-57ec7d4412cf devid 1 transid 8 /dev/loop0 scanned by syz.0.27 (5186) [ 75.793928][ T5186] BTRFS info (device loop0): using crc32c (crc32c-generic) checksum algorithm [ 75.795515][ T5186] BTRFS info (device loop0): using free space tree [ 75.796682][ T5186] BTRFS info (device loop0): has skinny extents [ 75.834262][ T5186] BTRFS info (device loop0): enabling ssd optimizations [ 75.844184][ T5186] FAULT_INJECTION: forcing a failure. [ 75.844184][ T5186] name failslab, interval 1, probability 0, space 0, times 0 [ 75.846200][ T5186] CPU: 1 PID: 5186 Comm: syz.0.27 Tainted: G W syzkaller #0 [ 75.847634][ T5186] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/18/2026 [ 75.849420][ T5186] Call trace: [ 75.849952][ T5186] dump_backtrace+0x0/0x458 [ 75.850730][ T5186] show_stack+0x2c/0x3c [ 75.851453][ T5186] __dump_stack+0x30/0x40 [ 75.852170][ T5186] dump_stack_lvl+0xf4/0x15c [ 75.853020][ T5186] dump_stack+0x1c/0x5c [ 75.853720][ T5186] should_fail+0x3bc/0x514 [ 75.854461][ T5186] __should_failslab+0xbc/0x10c [ 75.855280][ T5186] should_failslab+0x10/0x28 [ 75.856082][ T5186] slab_pre_alloc_hook+0x64/0xe8 [ 75.856968][ T5186] kmem_cache_alloc+0x94/0x3d4 [ 75.857766][ T5186] btrfs_alloc_path+0x5c/0x68 [ 75.858522][ T5186] __btrfs_unlink_inode+0x1dc/0xaec [ 75.859441][ T5186] btrfs_unlink+0x108/0x258 [ 75.860209][ T5186] vfs_unlink+0x2e0/0x4f4 [ 75.860933][ T5186] do_unlinkat+0x328/0x618 [ 75.861673][ T5186] __arm64_sys_unlinkat+0xe0/0xfc [ 75.862545][ T5186] invoke_syscall+0x98/0x2b0 [ 75.863304][ T5186] el0_svc_common+0x138/0x258 [ 75.864089][ T5186] do_el0_svc+0x58/0x13c [ 75.864822][ T5186] el0_svc+0x78/0x1d0 [ 75.865489][ T5186] el0t_64_sync_handler+0xcc/0xe4 [ 75.866332][ T5186] el0t_64_sync+0x1a0/0x1a4 [ 76.103427][ T5207] BTRFS: device fsid c9fe44da-de57-406a-8241-57ec7d4412cf devid 1 transid 8 /dev/loop0 scanned by syz.0.28 (5207) [ 76.107386][ T5207] BTRFS info (device loop0): using crc32c (crc32c-generic) checksum algorithm [ 76.108776][ T5207] BTRFS info (device loop0): using free space tree [ 76.109882][ T5207] BTRFS info (device loop0): has skinny extents [ 76.117991][ T5207] BTRFS info (device loop0): enabling ssd optimizations [ 76.122648][ T5207] FAULT_INJECTION: forcing a failure. [ 76.122648][ T5207] name failslab, interval 1, probability 0, space 0, times 0 [ 76.124714][ T5207] CPU: 1 PID: 5207 Comm: syz.0.28 Tainted: G W syzkaller #0 [ 76.126189][ T5207] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/18/2026 [ 76.127956][ T5207] Call trace: [ 76.128523][ T5207] dump_backtrace+0x0/0x458 [ 76.129283][ T5207] show_stack+0x2c/0x3c [ 76.129998][ T5207] __dump_stack+0x30/0x40 [ 76.130751][ T5207] dump_stack_lvl+0xf4/0x15c [ 76.131534][ T5207] dump_stack+0x1c/0x5c [ 76.132235][ T5207] should_fail+0x3bc/0x514 [ 76.132981][ T5207] __should_failslab+0xbc/0x10c [ 76.133802][ T5207] should_failslab+0x10/0x28 [ 76.134583][ T5207] slab_pre_alloc_hook+0x64/0xe8 [ 76.135443][ T5207] kmem_cache_alloc_trace+0x98/0x3ec [ 76.136345][ T5207] btrfs_delete_delayed_dir_index+0x22c/0x56c [ 76.137406][ T5207] __btrfs_unlink_inode+0x350/0xaec [ 76.138305][ T5207] btrfs_unlink+0x108/0x258 [ 76.139108][ T5207] vfs_unlink+0x2e0/0x4f4 [ 76.139822][ T5207] do_unlinkat+0x328/0x618 [ 76.140567][ T5207] __arm64_sys_unlinkat+0xe0/0xfc [ 76.141419][ T5207] invoke_syscall+0x98/0x2b0 [ 76.142281][ T5207] el0_svc_common+0x138/0x258 [ 76.143122][ T5207] do_el0_svc+0x58/0x13c [ 76.143879][ T5207] el0_svc+0x78/0x1d0 [ 76.144569][ T5207] el0t_64_sync_handler+0xcc/0xe4 [ 76.145442][ T5207] el0t_64_sync+0x1a0/0x1a4 [ 76.146478][ T5207] ------------[ cut here ]------------ [ 76.147619][ T5207] WARNING: CPU: 1 PID: 5207 at fs/btrfs/inode.c:4182 __btrfs_unlink_inode+0x904/0xaec [ 76.149084][ T5207] Modules linked in: [ 76.149772][ T5207] CPU: 1 PID: 5207 Comm: syz.0.28 Tainted: G W syzkaller #0 [ 76.151180][ T5207] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/18/2026 [ 76.152906][ T5207] pstate: 62400005 (nZCv daif +PAN -UAO +TCO -DIT -SSBS BTYPE=--) [ 76.154164][ T5207] pc : __btrfs_unlink_inode+0x904/0xaec [ 76.155052][ T5207] lr : __btrfs_unlink_inode+0x904/0xaec [ 76.155973][ T5207] sp : ffff8000210c7a60 [ 76.156659][ T5207] x29: ffff8000210c7b10 x28: ffff0000ce93c000 x27: ffff0000e2529c10 [ 76.157996][ T5207] x26: 0000000000000100 x25: 00000000fffffff4 x24: ffff0000d0cf8dc0 [ 76.159408][ T5207] x23: ffff700004218f54 x22: dfff800000000000 x21: ffff0000e25744b0 [ 76.160761][ T5207] x20: ffff0000de7d0c08 x19: 1fffe0001bcfa181 x18: 0000000000000001 [ 76.162221][ T5207] x17: 0000000000000000 x16: ffff800008304af8 x15: 00000000ffffffff [ 76.163595][ T5207] x14: 0000000000000001 x13: 1ffff00004218e6c x12: 0000000000ff0100 [ 76.165000][ T5207] x11: 0000000000000000 x10: 0000000000000000 x9 : dc5a22d5ea072a00 [ 76.166345][ T5207] x8 : dc5a22d5ea072a00 x7 : 0000000000000001 x6 : 0000000000000001 [ 76.167720][ T5207] x5 : ffff8000210c7378 x4 : ffff80001437f3e0 x3 : ffff800008304c08 [ 76.169094][ T5207] x2 : 0000000000000001 x1 : 0000000100000000 x0 : 0000000000000026 [ 76.170492][ T5207] Call trace: [ 76.171030][ T5207] __btrfs_unlink_inode+0x904/0xaec [ 76.171924][ T5207] btrfs_unlink+0x108/0x258 [ 76.172690][ T5207] vfs_unlink+0x2e0/0x4f4 [ 76.173411][ T5207] do_unlinkat+0x328/0x618 [ 76.174164][ T5207] __arm64_sys_unlinkat+0xe0/0xfc [ 76.175023][ T5207] invoke_syscall+0x98/0x2b0 [ 76.175814][ T5207] el0_svc_common+0x138/0x258 [ 76.176544][ T5207] do_el0_svc+0x58/0x13c [ 76.177174][ T5207] el0_svc+0x78/0x1d0 [ 76.177851][ T5207] el0t_64_sync_handler+0xcc/0xe4 [ 76.178653][ T5207] el0t_64_sync+0x1a0/0x1a4 [ 76.179383][ T5207] irq event stamp: 79848 [ 76.180076][ T5207] hardirqs last enabled at (79847): [] __up_console_sem+0xb4/0xfc [ 76.181591][ T5207] hardirqs last disabled at (79848): [] el1_dbg+0x24/0x80 [ 76.183095][ T5207] softirqs last enabled at (79838): [] handle_softirqs+0xa40/0xbe4 [ 76.184735][ T5207] softirqs last disabled at (79789): [] __irq_exit_rcu+0x240/0x43c [ 76.186347][ T5207] ---[ end trace 98697d1551805d9d ]--- [ 76.187690][ T5207] BTRFS: error (device loop0) in __btrfs_unlink_inode:4182: errno=-12 Out of memory [ 76.189254][ T5207] BTRFS info (device loop0): forced readonly [ 76.372698][ T5229] BTRFS: device fsid c9fe44da-de57-406a-8241-57ec7d4412cf devid 1 transid 8 /dev/loop0 scanned by syz.0.29 (5229) [ 76.376242][ T5229] BTRFS info (device loop0): using crc32c (crc32c-generic) checksum algorithm [ 76.378112][ T5229] BTRFS info (device loop0): using free space tree [ 76.379132][ T5229] BTRFS info (device loop0): has skinny extents [ 76.392201][ T5229] BTRFS info (device loop0): enabling ssd optimizations [ 76.396241][ T5229] FAULT_INJECTION: forcing a failure. [ 76.396241][ T5229] name failslab, interval 1, probability 0, space 0, times 0 [ 76.399071][ T5229] CPU: 1 PID: 5229 Comm: syz.0.29 Tainted: G W syzkaller #0 [ 76.400452][ T5229] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/18/2026 [ 76.402213][ T5229] Call trace: [ 76.402746][ T5229] dump_backtrace+0x0/0x458 [ 76.403535][ T5229] show_stack+0x2c/0x3c [ 76.404291][ T5229] __dump_stack+0x30/0x40 [ 76.405028][ T5229] dump_stack_lvl+0xf4/0x15c [ 76.405830][ T5229] dump_stack+0x1c/0x5c [ 76.406508][ T5229] should_fail+0x3bc/0x514 [ 76.407198][ T5229] __should_failslab+0xbc/0x10c [ 76.408050][ T5229] should_failslab+0x10/0x28 [ 76.408859][ T5229] slab_pre_alloc_hook+0x64/0xe8 [ 76.409661][ T5229] kmem_cache_alloc_trace+0x98/0x3ec [ 76.410571][ T5229] btrfs_delete_delayed_dir_index+0x22c/0x56c [ 76.411600][ T5229] __btrfs_unlink_inode+0x350/0xaec [ 76.412511][ T5229] btrfs_unlink+0x108/0x258 [ 76.413280][ T5229] vfs_unlink+0x2e0/0x4f4 [ 76.414003][ T5229] do_unlinkat+0x328/0x618 [ 76.414791][ T5229] __arm64_sys_unlinkat+0xe0/0xfc [ 76.415629][ T5229] invoke_syscall+0x98/0x2b0 [ 76.416393][ T5229] el0_svc_common+0x138/0x258 [ 76.417201][ T5229] do_el0_svc+0x58/0x13c [ 76.417948][ T5229] el0_svc+0x78/0x1d0 [ 76.418625][ T5229] el0t_64_sync_handler+0xcc/0xe4 [ 76.419425][ T5229] el0t_64_sync+0x1a0/0x1a4 [ 76.422144][ T5229] ------------[ cut here ]------------ [ 76.423164][ T5229] WARNING: CPU: 1 PID: 5229 at fs/btrfs/inode.c:4182 __btrfs_unlink_inode+0x904/0xaec [ 76.424656][ T5229] Modules linked in: [ 76.425222][ T5229] CPU: 1 PID: 5229 Comm: syz.0.29 Tainted: G W syzkaller #0 [ 76.426571][ T5229] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/18/2026 [ 76.428127][ T5229] pstate: 62400005 (nZCv daif +PAN -UAO +TCO -DIT -SSBS BTYPE=--) [ 76.429467][ T5229] pc : __btrfs_unlink_inode+0x904/0xaec [ 76.430406][ T5229] lr : __btrfs_unlink_inode+0x904/0xaec [ 76.431362][ T5229] sp : ffff8000212f7a60 [ 76.432085][ T5229] x29: ffff8000212f7b10 x28: ffff0000d6e48000 x27: ffff0000e2528410 [ 76.433452][ T5229] x26: 0000000000000100 x25: 00000000fffffff4 x24: ffff0000ddef5370 [ 76.434834][ T5229] x23: ffff70000425ef54 x22: dfff800000000000 x21: ffff0000e2576220 [ 76.436184][ T5229] x20: ffff0000de7d01b8 x19: 1fffe0001bcfa037 x18: 0000000000000001 [ 76.437527][ T5229] x17: 0000000000000000 x16: ffff80001125f448 x15: 00000000ffffffff [ 76.438812][ T5229] x14: 0000000000000001 x13: 1fffe000341f47ab x12: 0000000000ff0100 [ 76.440165][ T5229] x11: 0000000000000000 x10: 0000000000000000 x9 : 070140922d198000 [ 76.441525][ T5229] x8 : 070140922d198000 x7 : 0000000000000001 x6 : 0000000000000001 [ 76.442921][ T5229] x5 : ffff8000212f7378 x4 : ffff80001437f3e0 x3 : ffff800008509220 [ 76.444296][ T5229] x2 : 0000000000000001 x1 : 0000000100000000 x0 : 0000000000000026 [ 76.445649][ T5229] Call trace: [ 76.446222][ T5229] __btrfs_unlink_inode+0x904/0xaec [ 76.447093][ T5229] btrfs_unlink+0x108/0x258 [ 76.447846][ T5229] vfs_unlink+0x2e0/0x4f4 [ 76.448604][ T5229] do_unlinkat+0x328/0x618 [ 76.449348][ T5229] __arm64_sys_unlinkat+0xe0/0xfc [ 76.450190][ T5229] invoke_syscall+0x98/0x2b0 [ 76.450960][ T5229] el0_svc_common+0x138/0x258 [ 76.451798][ T5229] do_el0_svc+0x58/0x13c [ 76.452588][ T5229] el0_svc+0x78/0x1d0 [ 76.453276][ T5229] el0t_64_sync_handler+0xcc/0xe4 [ 76.454145][ T5229] el0t_64_sync+0x1a0/0x1a4 [ 76.454907][ T5229] irq event stamp: 79872 [ 76.455618][ T5229] hardirqs last enabled at (79871): [] __up_console_sem+0xb4/0xfc [ 76.457304][ T5229] hardirqs last disabled at (79872): [] el1_dbg+0x24/0x80 [ 76.458719][ T5229] softirqs last enabled at (79852): [] handle_softirqs+0xa40/0xbe4 [ 76.460350][ T5229] softirqs last disabled at (79735): [] __irq_exit_rcu+0x240/0x43c [ 76.462003][ T5229] ---[ end trace 98697d1551805d9e ]--- [ 76.464912][ T5229] BTRFS: error (device loop0) in __btrfs_unlink_inode:4182: errno=-12 Out of memory [ 76.466433][ T5229] BTRFS info (device loop0): forced readonly [ 76.628405][ T5251] BTRFS: device fsid c9fe44da-de57-406a-8241-57ec7d4412cf devid 1 transid 8 /dev/loop0 scanned by syz.0.30 (5251) [ 76.669490][ T5251] BTRFS info (device loop0): using crc32c (crc32c-generic) checksum algorithm [ 76.671000][ T5251] BTRFS info (device loop0): using free space tree [ 76.672155][ T5251] BTRFS info (device loop0): has skinny extents [ 76.684792][ T5251] BTRFS info (device loop0): enabling ssd optimizations [ 76.692733][ T5251] FAULT_INJECTION: forcing a failure. [ 76.692733][ T5251] name failslab, interval 1, probability 0, space 0, times 0 [ 76.694999][ T5251] CPU: 1 PID: 5251 Comm: syz.0.30 Tainted: G W syzkaller #0 [ 76.696475][ T5251] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/18/2026 [ 76.698213][ T5251] Call trace: [ 76.698752][ T5251] dump_backtrace+0x0/0x458 [ 76.699507][ T5251] show_stack+0x2c/0x3c [ 76.700190][ T5251] __dump_stack+0x30/0x40 [ 76.700906][ T5251] dump_stack_lvl+0xf4/0x15c [ 76.701720][ T5251] dump_stack+0x1c/0x5c [ 76.702422][ T5251] should_fail+0x3bc/0x514 [ 76.703185][ T5251] __should_failslab+0xbc/0x10c [ 76.704030][ T5251] should_failslab+0x10/0x28 [ 76.704828][ T5251] slab_pre_alloc_hook+0x64/0xe8 [ 76.705676][ T5251] kmem_cache_alloc_trace+0x98/0x3ec [ 76.706573][ T5251] btrfs_delete_delayed_dir_index+0x22c/0x56c [ 76.707629][ T5251] __btrfs_unlink_inode+0x350/0xaec [ 76.708522][ T5251] btrfs_unlink+0x108/0x258 [ 76.709292][ T5251] vfs_unlink+0x2e0/0x4f4 [ 76.710000][ T5251] do_unlinkat+0x328/0x618 [ 76.710727][ T5251] __arm64_sys_unlinkat+0xe0/0xfc [ 76.711566][ T5251] invoke_syscall+0x98/0x2b0 [ 76.712330][ T5251] el0_svc_common+0x138/0x258 [ 76.713188][ T5251] do_el0_svc+0x58/0x13c [ 76.713923][ T5251] el0_svc+0x78/0x1d0 [ 76.714604][ T5251] el0t_64_sync_handler+0xcc/0xe4 [ 76.715447][ T5251] el0t_64_sync+0x1a0/0x1a4 [ 76.717950][ T5251] ------------[ cut here ]------------ [ 76.718950][ T5251] WARNING: CPU: 1 PID: 5251 at fs/btrfs/inode.c:4182 __btrfs_unlink_inode+0x904/0xaec [ 76.720603][ T5251] Modules linked in: [ 76.721232][ T5251] CPU: 1 PID: 5251 Comm: syz.0.30 Tainted: G W syzkaller #0 [ 76.722748][ T5251] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/18/2026 [ 76.724450][ T5251] pstate: 62400005 (nZCv daif +PAN -UAO +TCO -DIT -SSBS BTYPE=--) [ 76.725709][ T5251] pc : __btrfs_unlink_inode+0x904/0xaec [ 76.726670][ T5251] lr : __btrfs_unlink_inode+0x904/0xaec [ 76.727561][ T5251] sp : ffff800021357a60 [ 76.728279][ T5251] x29: ffff800021357b10 x28: ffff0000da162000 x27: ffff0000e252a010 [ 76.729647][ T5251] x26: 0000000000000100 x25: 00000000fffffff4 x24: ffff0000c8416840 [ 76.731112][ T5251] x23: ffff70000426af54 x22: dfff800000000000 x21: ffff0000ec82bae0 [ 76.732447][ T5251] x20: ffff0000de7d0d68 x19: 1fffe0001bcfa1ad x18: 0000000000000001 [ 76.733791][ T5251] x17: 0000000000000000 x16: ffff80001125f448 x15: 00000000ffffffff [ 76.735161][ T5251] x14: 0000000000000001 x13: 1fffe000341f47ab x12: 0000000000ff0100 [ 76.736592][ T5251] x11: 0000000000000000 x10: 0000000000000000 x9 : dc81d6de8d9acb00 [ 76.738047][ T5251] x8 : dc81d6de8d9acb00 x7 : 0000000000000001 x6 : 0000000000000001 [ 76.739392][ T5251] x5 : ffff800021357378 x4 : ffff80001437f3e0 x3 : ffff800008509220 [ 76.740700][ T5251] x2 : 0000000000000001 x1 : 0000000100000000 x0 : 0000000000000026 [ 76.742070][ T5251] Call trace: [ 76.742639][ T5251] __btrfs_unlink_inode+0x904/0xaec [ 76.743566][ T5251] btrfs_unlink+0x108/0x258 [ 76.744374][ T5251] vfs_unlink+0x2e0/0x4f4 [ 76.745098][ T5251] do_unlinkat+0x328/0x618 [ 76.745861][ T5251] __arm64_sys_unlinkat+0xe0/0xfc [ 76.746713][ T5251] invoke_syscall+0x98/0x2b0 [ 76.747488][ T5251] el0_svc_common+0x138/0x258 [ 76.748297][ T5251] do_el0_svc+0x58/0x13c [ 76.749016][ T5251] el0_svc+0x78/0x1d0 [ 76.749706][ T5251] el0t_64_sync_handler+0xcc/0xe4 [ 76.750563][ T5251] el0t_64_sync+0x1a0/0x1a4 [ 76.751319][ T5251] irq event stamp: 80120 [ 76.752055][ T5251] hardirqs last enabled at (80119): [] __up_console_sem+0xb4/0xfc [ 76.753626][ T5251] hardirqs last disabled at (80120): [] el1_dbg+0x24/0x80 [ 76.755121][ T5251] softirqs last enabled at (80100): [] handle_softirqs+0xa40/0xbe4 [ 76.756768][ T5251] softirqs last disabled at (79987): [] __irq_exit_rcu+0x240/0x43c [ 76.758375][ T5251] ---[ end trace 98697d1551805d9f ]--- [ 76.760721][ T5251] BTRFS: error (device loop0) in __btrfs_unlink_inode:4182: errno=-12 Out of memory [ 76.762251][ T5251] BTRFS info (device loop0): forced readonly 1970/01/01 00:01:16 executed programs: 18 [ 76.935387][ T5273] set_capacity_and_notify: 6 callbacks suppressed [ 76.935396][ T5273] loop0: detected capacity change from 0 to 32768 [ 76.941883][ T5273] BTRFS: device fsid c9fe44da-de57-406a-8241-57ec7d4412cf devid 1 transid 8 /dev/loop0 scanned by syz.0.31 (5273) [ 76.945407][ T5273] BTRFS info (device loop0): using crc32c (crc32c-generic) checksum algorithm [ 76.946860][ T5273] BTRFS info (device loop0): using free space tree [ 76.949143][ T5273] BTRFS info (device loop0): has skinny extents [ 76.956613][ T5273] BTRFS info (device loop0): enabling ssd optimizations [ 76.960683][ T5273] FAULT_INJECTION: forcing a failure. [ 76.960683][ T5273] name failslab, interval 1, probability 0, space 0, times 0 [ 76.962728][ T5273] CPU: 1 PID: 5273 Comm: syz.0.31 Tainted: G W syzkaller #0 [ 76.964189][ T5273] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/18/2026 [ 76.965980][ T5273] Call trace: [ 76.966547][ T5273] dump_backtrace+0x0/0x458 [ 76.967336][ T5273] show_stack+0x2c/0x3c [ 76.967981][ T5273] __dump_stack+0x30/0x40 [ 76.968662][ T5273] dump_stack_lvl+0xf4/0x15c [ 76.969444][ T5273] dump_stack+0x1c/0x5c [ 76.970182][ T5273] should_fail+0x3bc/0x514 [ 76.970948][ T5273] __should_failslab+0xbc/0x10c [ 76.971781][ T5273] should_failslab+0x10/0x28 [ 76.972568][ T5273] slab_pre_alloc_hook+0x64/0xe8 [ 76.973432][ T5273] kmem_cache_alloc_trace+0x98/0x3ec [ 76.974345][ T5273] btrfs_delete_delayed_dir_index+0x22c/0x56c [ 76.975384][ T5273] __btrfs_unlink_inode+0x350/0xaec [ 76.976280][ T5273] btrfs_unlink+0x108/0x258 [ 76.977049][ T5273] vfs_unlink+0x2e0/0x4f4 [ 76.977802][ T5273] do_unlinkat+0x328/0x618 [ 76.978556][ T5273] __arm64_sys_unlinkat+0xe0/0xfc [ 76.979471][ T5273] invoke_syscall+0x98/0x2b0 [ 76.980260][ T5273] el0_svc_common+0x138/0x258 [ 76.981069][ T5273] do_el0_svc+0x58/0x13c [ 76.981824][ T5273] el0_svc+0x78/0x1d0 [ 76.982563][ T5273] el0t_64_sync_handler+0xcc/0xe4 [ 76.983355][ T5273] el0t_64_sync+0x1a0/0x1a4 [ 76.984277][ T5273] ------------[ cut here ]------------ [ 76.985816][ T5273] WARNING: CPU: 1 PID: 5273 at fs/btrfs/inode.c:4182 __btrfs_unlink_inode+0x904/0xaec [ 76.987349][ T5273] Modules linked in: [ 76.987959][ T5273] CPU: 1 PID: 5273 Comm: syz.0.31 Tainted: G W syzkaller #0 [ 76.989368][ T5273] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/18/2026 [ 76.990994][ T5273] pstate: 62400005 (nZCv daif +PAN -UAO +TCO -DIT -SSBS BTYPE=--) [ 76.992322][ T5273] pc : __btrfs_unlink_inode+0x904/0xaec [ 76.993267][ T5273] lr : __btrfs_unlink_inode+0x904/0xaec [ 76.994221][ T5273] sp : ffff8000214c7a60 [ 76.994932][ T5273] x29: ffff8000214c7b10 x28: ffff0000c1dc2000 x27: ffff0000e252a410 [ 76.996377][ T5273] x26: 0000000000000100 x25: 00000000fffffff4 x24: ffff0000e9ef9420 [ 76.997758][ T5273] x23: ffff700004298f54 x22: dfff800000000000 x21: ffff0000ec8293a0 [ 76.999111][ T5273] x20: ffff0000de7d0ec8 x19: 1fffe0001bcfa1d9 x18: 0000000000000001 [ 77.000514][ T5273] x17: 0000000000000000 x16: ffff80001125f448 x15: 00000000ffffffff [ 77.001874][ T5273] x14: 0000000000000001 x13: 1fffe000341f47ab x12: 0000000000ff0100 [ 77.003240][ T5273] x11: 0000000000000000 x10: 0000000000000000 x9 : 90bbc4b4a926a000 [ 77.004685][ T5273] x8 : 90bbc4b4a926a000 x7 : 0000000000000001 x6 : 0000000000000001 [ 77.006149][ T5273] x5 : ffff8000214c7378 x4 : ffff80001437f3e0 x3 : ffff800008509220 [ 77.007559][ T5273] x2 : 0000000000000001 x1 : 0000000100000000 x0 : 0000000000000026 [ 77.008908][ T5273] Call trace: [ 77.009479][ T5273] __btrfs_unlink_inode+0x904/0xaec [ 77.010348][ T5273] btrfs_unlink+0x108/0x258 [ 77.011101][ T5273] vfs_unlink+0x2e0/0x4f4 [ 77.011850][ T5273] do_unlinkat+0x328/0x618 [ 77.012614][ T5273] __arm64_sys_unlinkat+0xe0/0xfc [ 77.013463][ T5273] invoke_syscall+0x98/0x2b0 [ 77.014251][ T5273] el0_svc_common+0x138/0x258 [ 77.015046][ T5273] do_el0_svc+0x58/0x13c [ 77.015787][ T5273] el0_svc+0x78/0x1d0 [ 77.016473][ T5273] el0t_64_sync_handler+0xcc/0xe4 [ 77.017354][ T5273] el0t_64_sync+0x1a0/0x1a4 [ 77.018135][ T5273] irq event stamp: 80312 [ 77.018931][ T5273] hardirqs last enabled at (80311): [] __up_console_sem+0xb4/0xfc [ 77.020557][ T5273] hardirqs last disabled at (80312): [] el1_dbg+0x24/0x80 [ 77.021993][ T5273] softirqs last enabled at (80288): [] handle_softirqs+0xa40/0xbe4 [ 77.023646][ T5273] softirqs last disabled at (80277): [] __irq_exit_rcu+0x240/0x43c [ 77.025303][ T5273] ---[ end trace 98697d1551805da0 ]--- [ 77.027312][ T5273] BTRFS: error (device loop0) in __btrfs_unlink_inode:4182: errno=-12 Out of memory [ 77.028859][ T5273] BTRFS info (device loop0): forced readonly [ 77.164860][ T5295] loop0: detected capacity change from 0 to 32768 [ 77.211754][ T5295] BTRFS: device fsid c9fe44da-de57-406a-8241-57ec7d4412cf devid 1 transid 8 /dev/loop0 scanned by syz.0.32 (5295) [ 77.216843][ T5295] BTRFS info (device loop0): using crc32c (crc32c-generic) checksum algorithm [ 77.219223][ T5295] BTRFS info (device loop0): using free space tree [ 77.220325][ T5295] BTRFS info (device loop0): has skinny extents [ 77.229111][ T5295] BTRFS info (device loop0): enabling ssd optimizations [ 77.233227][ T5295] FAULT_INJECTION: forcing a failure. [ 77.233227][ T5295] name failslab, interval 1, probability 0, space 0, times 0 [ 77.235368][ T5295] CPU: 1 PID: 5295 Comm: syz.0.32 Tainted: G W syzkaller #0 [ 77.236712][ T5295] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/18/2026 [ 77.238384][ T5295] Call trace: [ 77.238917][ T5295] dump_backtrace+0x0/0x458 [ 77.239680][ T5295] show_stack+0x2c/0x3c [ 77.240426][ T5295] __dump_stack+0x30/0x40 [ 77.241186][ T5295] dump_stack_lvl+0xf4/0x15c [ 77.241997][ T5295] dump_stack+0x1c/0x5c [ 77.242718][ T5295] should_fail+0x3bc/0x514 [ 77.243476][ T5295] __should_failslab+0xbc/0x10c [ 77.244310][ T5295] should_failslab+0x10/0x28 [ 77.245094][ T5295] slab_pre_alloc_hook+0x64/0xe8 [ 77.246041][ T5295] kmem_cache_alloc_trace+0x98/0x3ec [ 77.246953][ T5295] btrfs_delete_delayed_dir_index+0x22c/0x56c [ 77.248015][ T5295] __btrfs_unlink_inode+0x350/0xaec [ 77.248943][ T5295] btrfs_unlink+0x108/0x258 [ 77.249707][ T5295] vfs_unlink+0x2e0/0x4f4 [ 77.250456][ T5295] do_unlinkat+0x328/0x618 [ 77.251160][ T5295] __arm64_sys_unlinkat+0xe0/0xfc [ 77.252032][ T5295] invoke_syscall+0x98/0x2b0 [ 77.252814][ T5295] el0_svc_common+0x138/0x258 [ 77.253614][ T5295] do_el0_svc+0x58/0x13c [ 77.254354][ T5295] el0_svc+0x78/0x1d0 [ 77.255064][ T5295] el0t_64_sync_handler+0xcc/0xe4 [ 77.255921][ T5295] el0t_64_sync+0x1a0/0x1a4 [ 77.258967][ T5295] ------------[ cut here ]------------ [ 77.259990][ T5295] WARNING: CPU: 1 PID: 5295 at fs/btrfs/inode.c:4182 __btrfs_unlink_inode+0x904/0xaec [ 77.261612][ T5295] Modules linked in: [ 77.262300][ T5295] CPU: 1 PID: 5295 Comm: syz.0.32 Tainted: G W syzkaller #0 [ 77.263730][ T5295] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/18/2026 [ 77.265408][ T5295] pstate: 62400005 (nZCv daif +PAN -UAO +TCO -DIT -SSBS BTYPE=--) [ 77.266774][ T5295] pc : __btrfs_unlink_inode+0x904/0xaec [ 77.267696][ T5295] lr : __btrfs_unlink_inode+0x904/0xaec [ 77.268622][ T5295] sp : ffff8000214c7a60 [ 77.269323][ T5295] x29: ffff8000214c7b10 x28: ffff0000da5de000 x27: ffff0000e252a810 [ 77.270704][ T5295] x26: 0000000000000100 x25: 00000000fffffff4 x24: ffff0000cd105420 [ 77.272074][ T5295] x23: ffff700004298f54 x22: dfff800000000000 x21: ffff0000ec82c4b0 [ 77.273415][ T5295] x20: ffff0000de7d0f78 x19: 1fffe0001bcfa1ef x18: 0000000000000001 [ 77.274776][ T5295] x17: 0000000000000000 x16: ffff80001125f448 x15: 00000000ffffffff [ 77.276123][ T5295] x14: 0000000000000001 x13: 1fffe000341f47ab x12: 0000000000ff0100 [ 77.277571][ T5295] x11: 0000000000000000 x10: 0000000000000000 x9 : 2bab3fd9dc5dcc00 [ 77.278969][ T5295] x8 : 2bab3fd9dc5dcc00 x7 : 0000000000000001 x6 : 0000000000000001 [ 77.280366][ T5295] x5 : ffff8000214c7378 x4 : ffff80001437f3e0 x3 : ffff800008509220 [ 77.281814][ T5295] x2 : 0000000000000001 x1 : 0000000100000000 x0 : 0000000000000026 [ 77.283189][ T5295] Call trace: [ 77.283714][ T5295] __btrfs_unlink_inode+0x904/0xaec [ 77.284629][ T5295] btrfs_unlink+0x108/0x258 [ 77.285407][ T5295] vfs_unlink+0x2e0/0x4f4 [ 77.286152][ T5295] do_unlinkat+0x328/0x618 [ 77.286914][ T5295] __arm64_sys_unlinkat+0xe0/0xfc [ 77.287797][ T5295] invoke_syscall+0x98/0x2b0 [ 77.288506][ T5295] el0_svc_common+0x138/0x258 [ 77.289311][ T5295] do_el0_svc+0x58/0x13c [ 77.290073][ T5295] el0_svc+0x78/0x1d0 [ 77.290760][ T5295] el0t_64_sync_handler+0xcc/0xe4 [ 77.291653][ T5295] el0t_64_sync+0x1a0/0x1a4 [ 77.292445][ T5295] irq event stamp: 80476 [ 77.293114][ T5295] hardirqs last enabled at (80475): [] __up_console_sem+0xb4/0xfc [ 77.294734][ T5295] hardirqs last disabled at (80476): [] el1_dbg+0x24/0x80 [ 77.296209][ T5295] softirqs last enabled at (80454): [] handle_softirqs+0xa40/0xbe4 [ 77.297853][ T5295] softirqs last disabled at (80445): [] __irq_exit_rcu+0x240/0x43c [ 77.299576][ T5295] ---[ end trace 98697d1551805da1 ]--- [ 77.304119][ T5295] BTRFS: error (device loop0) in __btrfs_unlink_inode:4182: errno=-12 Out of memory [ 77.305709][ T5295] BTRFS info (device loop0): forced readonly [ 77.445602][ T5317] loop0: detected capacity change from 0 to 32768 [ 77.454453][ T5317] BTRFS: device fsid c9fe44da-de57-406a-8241-57ec7d4412cf devid 1 transid 8 /dev/loop0 scanned by syz.0.33 (5317) [ 77.459344][ T5317] BTRFS info (device loop0): using crc32c (crc32c-generic) checksum algorithm [ 77.460745][ T5317] BTRFS info (device loop0): using free space tree [ 77.461891][ T5317] BTRFS info (device loop0): has skinny extents [ 77.475618][ T5317] BTRFS info (device loop0): enabling ssd optimizations [ 77.480053][ T5317] FAULT_INJECTION: forcing a failure. [ 77.480053][ T5317] name failslab, interval 1, probability 0, space 0, times 0 [ 77.482096][ T5317] CPU: 0 PID: 5317 Comm: syz.0.33 Tainted: G W syzkaller #0 [ 77.483451][ T5317] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/18/2026 [ 77.485175][ T5317] Call trace: [ 77.485723][ T5317] dump_backtrace+0x0/0x458 [ 77.486481][ T5317] show_stack+0x2c/0x3c [ 77.487165][ T5317] __dump_stack+0x30/0x40 [ 77.487853][ T5317] dump_stack_lvl+0xf4/0x15c [ 77.488608][ T5317] dump_stack+0x1c/0x5c [ 77.489309][ T5317] should_fail+0x3bc/0x514 [ 77.490092][ T5317] __should_failslab+0xbc/0x10c [ 77.490921][ T5317] should_failslab+0x10/0x28 [ 77.491700][ T5317] slab_pre_alloc_hook+0x64/0xe8 [ 77.492574][ T5317] kmem_cache_alloc_trace+0x98/0x3ec [ 77.493451][ T5317] btrfs_delete_delayed_dir_index+0x22c/0x56c [ 77.494505][ T5317] __btrfs_unlink_inode+0x350/0xaec [ 77.495423][ T5317] btrfs_unlink+0x108/0x258 [ 77.496176][ T5317] vfs_unlink+0x2e0/0x4f4 [ 77.496863][ T5317] do_unlinkat+0x328/0x618 [ 77.497564][ T5317] __arm64_sys_unlinkat+0xe0/0xfc [ 77.498436][ T5317] invoke_syscall+0x98/0x2b0 [ 77.499208][ T5317] el0_svc_common+0x138/0x258 [ 77.500013][ T5317] do_el0_svc+0x58/0x13c [ 77.500699][ T5317] el0_svc+0x78/0x1d0 [ 77.501356][ T5317] el0t_64_sync_handler+0xcc/0xe4 [ 77.502213][ T5317] el0t_64_sync+0x1a0/0x1a4 [ 77.503306][ T5317] ------------[ cut here ]------------ [ 77.504317][ T5317] WARNING: CPU: 0 PID: 5317 at fs/btrfs/inode.c:4182 __btrfs_unlink_inode+0x904/0xaec [ 77.505934][ T5317] Modules linked in: [ 77.506584][ T5317] CPU: 0 PID: 5317 Comm: syz.0.33 Tainted: G W syzkaller #0 [ 77.507978][ T5317] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/18/2026 [ 77.509744][ T5317] pstate: 62400005 (nZCv daif +PAN -UAO +TCO -DIT -SSBS BTYPE=--) [ 77.510980][ T5317] pc : __btrfs_unlink_inode+0x904/0xaec [ 77.511928][ T5317] lr : __btrfs_unlink_inode+0x904/0xaec [ 77.512875][ T5317] sp : ffff800021777a60 [ 77.513601][ T5317] x29: ffff800021777b10 x28: ffff0000e8074000 x27: ffff0000ec998810 [ 77.514953][ T5317] x26: 0000000000000100 x25: 00000000fffffff4 x24: ffff0000dccca9a0 [ 77.516344][ T5317] x23: ffff7000042eef54 x22: dfff800000000000 x21: ffff0000ec87ebf0 [ 77.517670][ T5317] x20: ffff0000de733318 x19: 1fffe0001bce6663 x18: 0000000000000001 [ 77.519046][ T5317] x17: 0000000000000000 x16: ffff800008304af8 x15: 00000000ffffffff [ 77.520322][ T5317] x14: 0000000000000001 x13: 1ffff000042eee6c x12: 0000000000ff0100 [ 77.521639][ T5317] x11: 0000000000000000 x10: 0000000000000000 x9 : 9ba13f5d056a3800 [ 77.522972][ T5317] x8 : 9ba13f5d056a3800 x7 : 0000000000000001 x6 : 0000000000000001 [ 77.524282][ T5317] x5 : ffff800021777378 x4 : ffff80001437f3e0 x3 : ffff800008304c08 [ 77.525684][ T5317] x2 : 0000000000000001 x1 : 0000000100000000 x0 : 0000000000000026 [ 77.526988][ T5317] Call trace: [ 77.527521][ T5317] __btrfs_unlink_inode+0x904/0xaec [ 77.528456][ T5317] btrfs_unlink+0x108/0x258 [ 77.529180][ T5317] vfs_unlink+0x2e0/0x4f4 [ 77.529946][ T5317] do_unlinkat+0x328/0x618 [ 77.530674][ T5317] __arm64_sys_unlinkat+0xe0/0xfc [ 77.531471][ T5317] invoke_syscall+0x98/0x2b0 [ 77.532175][ T5317] el0_svc_common+0x138/0x258 [ 77.532976][ T5317] do_el0_svc+0x58/0x13c [ 77.533657][ T5317] el0_svc+0x78/0x1d0 [ 77.534266][ T5317] el0t_64_sync_handler+0xcc/0xe4 [ 77.535108][ T5317] el0t_64_sync+0x1a0/0x1a4 [ 77.535804][ T5317] irq event stamp: 81124 [ 77.536490][ T5317] hardirqs last enabled at (81123): [] __up_console_sem+0xb4/0xfc [ 77.538162][ T5317] hardirqs last disabled at (81124): [] el1_dbg+0x24/0x80 [ 77.539652][ T5317] softirqs last enabled at (81104): [] handle_softirqs+0xa40/0xbe4 [ 77.541193][ T5317] softirqs last disabled at (80993): [] __irq_exit_rcu+0x240/0x43c [ 77.542797][ T5317] ---[ end trace 98697d1551805da2 ]--- [ 77.544570][ T5317] BTRFS: error (device loop0) in __btrfs_unlink_inode:4182: errno=-12 Out of memory [ 77.546122][ T5317] BTRFS info (device loop0): forced readonly [ 77.734946][ T5339] loop0: detected capacity change from 0 to 32768 [ 77.772862][ T5339] BTRFS: device fsid c9fe44da-de57-406a-8241-57ec7d4412cf devid 1 transid 8 /dev/loop0 scanned by syz.0.34 (5339) [ 77.775999][ T5339] BTRFS info (device loop0): using crc32c (crc32c-generic) checksum algorithm [ 77.777646][ T5339] BTRFS info (device loop0): using free space tree [ 77.778741][ T5339] BTRFS info (device loop0): has skinny extents [ 77.792489][ T5339] BTRFS info (device loop0): enabling ssd optimizations [ 77.796718][ T5339] FAULT_INJECTION: forcing a failure. [ 77.796718][ T5339] name failslab, interval 1, probability 0, space 0, times 0 [ 77.799192][ T5339] CPU: 1 PID: 5339 Comm: syz.0.34 Tainted: G W syzkaller #0 [ 77.800653][ T5339] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/18/2026 [ 77.802382][ T5339] Call trace: [ 77.802956][ T5339] dump_backtrace+0x0/0x458 [ 77.803689][ T5339] show_stack+0x2c/0x3c [ 77.804377][ T5339] __dump_stack+0x30/0x40 [ 77.805050][ T5339] dump_stack_lvl+0xf4/0x15c [ 77.805800][ T5339] dump_stack+0x1c/0x5c [ 77.806553][ T5339] should_fail+0x3bc/0x514 [ 77.807274][ T5339] __should_failslab+0xbc/0x10c [ 77.808094][ T5339] should_failslab+0x10/0x28 [ 77.808811][ T5339] slab_pre_alloc_hook+0x64/0xe8 [ 77.809658][ T5339] kmem_cache_alloc_trace+0x98/0x3ec [ 77.810570][ T5339] btrfs_delete_delayed_dir_index+0x22c/0x56c [ 77.811662][ T5339] __btrfs_unlink_inode+0x350/0xaec [ 77.812619][ T5339] btrfs_unlink+0x108/0x258 [ 77.813358][ T5339] vfs_unlink+0x2e0/0x4f4 [ 77.814090][ T5339] do_unlinkat+0x328/0x618 [ 77.814902][ T5339] __arm64_sys_unlinkat+0xe0/0xfc [ 77.815795][ T5339] invoke_syscall+0x98/0x2b0 [ 77.816579][ T5339] el0_svc_common+0x138/0x258 [ 77.817353][ T5339] do_el0_svc+0x58/0x13c [ 77.818030][ T5339] el0_svc+0x78/0x1d0 [ 77.818694][ T5339] el0t_64_sync_handler+0xcc/0xe4 [ 77.819555][ T5339] el0t_64_sync+0x1a0/0x1a4 [ 77.822018][ T5339] ------------[ cut here ]------------ [ 77.823017][ T5339] WARNING: CPU: 1 PID: 5339 at fs/btrfs/inode.c:4182 __btrfs_unlink_inode+0x904/0xaec [ 77.824498][ T5339] Modules linked in: [ 77.825111][ T5339] CPU: 1 PID: 5339 Comm: syz.0.34 Tainted: G W syzkaller #0 [ 77.826543][ T5339] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/18/2026 [ 77.828279][ T5339] pstate: 62400005 (nZCv daif +PAN -UAO +TCO -DIT -SSBS BTYPE=--) [ 77.829625][ T5339] pc : __btrfs_unlink_inode+0x904/0xaec [ 77.830603][ T5339] lr : __btrfs_unlink_inode+0x904/0xaec [ 77.831580][ T5339] sp : ffff800021777a60 [ 77.832295][ T5339] x29: ffff800021777b10 x28: ffff0000cf806000 x27: ffff0000e252ac10 [ 77.833753][ T5339] x26: 0000000000000100 x25: 00000000fffffff4 x24: ffff0000c7c5ed10 [ 77.835112][ T5339] x23: ffff7000042eef54 x22: dfff800000000000 x21: ffff0000e24ac4b0 [ 77.836508][ T5339] x20: ffff0000de7d0478 x19: 1fffe0001bcfa08f x18: 0000000000000001 [ 77.837766][ T5339] x17: 0000000000000000 x16: ffff80001125f448 x15: 00000000ffffffff [ 77.839178][ T5339] x14: 0000000000000001 x13: 1fffe000341f47ab x12: 0000000000ff0100 [ 77.840540][ T5339] x11: 0000000000000000 x10: 0000000000000000 x9 : 9c047f09c57a6200 [ 77.841886][ T5339] x8 : 9c047f09c57a6200 x7 : 0000000000000001 x6 : 0000000000000001 [ 77.843309][ T5339] x5 : ffff800021777378 x4 : ffff80001437f3e0 x3 : ffff800008509220 [ 77.844712][ T5339] x2 : 0000000000000001 x1 : 0000000100000000 x0 : 0000000000000026 [ 77.846099][ T5339] Call trace: [ 77.846649][ T5339] __btrfs_unlink_inode+0x904/0xaec [ 77.847523][ T5339] btrfs_unlink+0x108/0x258 [ 77.848275][ T5339] vfs_unlink+0x2e0/0x4f4 [ 77.849005][ T5339] do_unlinkat+0x328/0x618 [ 77.849690][ T5339] __arm64_sys_unlinkat+0xe0/0xfc [ 77.850507][ T5339] invoke_syscall+0x98/0x2b0 [ 77.851273][ T5339] el0_svc_common+0x138/0x258 [ 77.852081][ T5339] do_el0_svc+0x58/0x13c [ 77.852829][ T5339] el0_svc+0x78/0x1d0 [ 77.853501][ T5339] el0t_64_sync_handler+0xcc/0xe4 [ 77.854353][ T5339] el0t_64_sync+0x1a0/0x1a4 [ 77.855089][ T5339] irq event stamp: 79604 [ 77.855793][ T5339] hardirqs last enabled at (79603): [] __up_console_sem+0xb4/0xfc [ 77.857457][ T5339] hardirqs last disabled at (79604): [] el1_dbg+0x24/0x80 [ 77.858923][ T5339] softirqs last enabled at (79584): [] handle_softirqs+0xa40/0xbe4 [ 77.860544][ T5339] softirqs last disabled at (79479): [] __irq_exit_rcu+0x240/0x43c [ 77.862153][ T5339] ---[ end trace 98697d1551805da3 ]--- [ 77.863622][ T5339] BTRFS: error (device loop0) in __btrfs_unlink_inode:4182: errno=-12 Out of memory [ 77.865679][ T5339] BTRFS info (device loop0): forced readonly [ 78.014968][ T5361] loop0: detected capacity change from 0 to 32768 [ 78.088527][ T5361] BTRFS: device fsid c9fe44da-de57-406a-8241-57ec7d4412cf devid 1 transid 8 /dev/loop0 scanned by syz.0.35 (5361) [ 78.129708][ T5361] BTRFS info (device loop0): using crc32c (crc32c-generic) checksum algorithm [ 78.131292][ T5361] BTRFS info (device loop0): using free space tree [ 78.132392][ T5361] BTRFS info (device loop0): has skinny extents [ 78.140275][ T5361] BTRFS info (device loop0): enabling ssd optimizations [ 78.144544][ T5361] FAULT_INJECTION: forcing a failure. [ 78.144544][ T5361] name failslab, interval 1, probability 0, space 0, times 0 [ 78.146679][ T5361] CPU: 1 PID: 5361 Comm: syz.0.35 Tainted: G W syzkaller #0 [ 78.148109][ T5361] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/18/2026 [ 78.149808][ T5361] Call trace: [ 78.150316][ T5361] dump_backtrace+0x0/0x458 [ 78.151051][ T5361] show_stack+0x2c/0x3c [ 78.151739][ T5361] __dump_stack+0x30/0x40 [ 78.152452][ T5361] dump_stack_lvl+0xf4/0x15c [ 78.153246][ T5361] dump_stack+0x1c/0x5c [ 78.153992][ T5361] should_fail+0x3bc/0x514 [ 78.154734][ T5361] __should_failslab+0xbc/0x10c [ 78.155553][ T5361] should_failslab+0x10/0x28 [ 78.156336][ T5361] slab_pre_alloc_hook+0x64/0xe8 [ 78.157213][ T5361] kmem_cache_alloc_trace+0x98/0x3ec [ 78.158109][ T5361] btrfs_delete_delayed_dir_index+0x22c/0x56c [ 78.159207][ T5361] __btrfs_unlink_inode+0x350/0xaec [ 78.160021][ T5361] btrfs_unlink+0x108/0x258 [ 78.160765][ T5361] vfs_unlink+0x2e0/0x4f4 [ 78.161517][ T5361] do_unlinkat+0x328/0x618 [ 78.162263][ T5361] __arm64_sys_unlinkat+0xe0/0xfc [ 78.163157][ T5361] invoke_syscall+0x98/0x2b0 [ 78.163938][ T5361] el0_svc_common+0x138/0x258 [ 78.164739][ T5361] do_el0_svc+0x58/0x13c [ 78.165464][ T5361] el0_svc+0x78/0x1d0 [ 78.166111][ T5361] el0t_64_sync_handler+0xcc/0xe4 [ 78.166968][ T5361] el0t_64_sync+0x1a0/0x1a4 [ 78.169654][ T5361] ------------[ cut here ]------------ [ 78.170716][ T5361] WARNING: CPU: 1 PID: 5361 at fs/btrfs/inode.c:4182 __btrfs_unlink_inode+0x904/0xaec [ 78.172284][ T5361] Modules linked in: [ 78.172896][ T5361] CPU: 1 PID: 5361 Comm: syz.0.35 Tainted: G W syzkaller #0 [ 78.174368][ T5361] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/18/2026 [ 78.176087][ T5361] pstate: 62400005 (nZCv daif +PAN -UAO +TCO -DIT -SSBS BTYPE=--) [ 78.177437][ T5361] pc : __btrfs_unlink_inode+0x904/0xaec [ 78.178399][ T5361] lr : __btrfs_unlink_inode+0x904/0xaec [ 78.179357][ T5361] sp : ffff8000217b7a60 [ 78.180086][ T5361] x29: ffff8000217b7b10 x28: ffff0000d12f6000 x27: ffff0000e2529010 [ 78.181447][ T5361] x26: 0000000000000100 x25: 00000000fffffff4 x24: ffff0000cd219d10 [ 78.182796][ T5361] x23: ffff7000042f6f54 x22: dfff800000000000 x21: ffff0000e24a9d70 [ 78.184133][ T5361] x20: ffff0000de7d0058 x19: 1fffe0001bcfa00b x18: 0000000000000001 [ 78.185455][ T5361] x17: 0000000000000000 x16: ffff80001125f448 x15: 00000000ffffffff [ 78.186790][ T5361] x14: 0000000000000001 x13: 1fffe000341f47ab x12: 0000000000ff0100 [ 78.188164][ T5361] x11: 0000000000000000 x10: 0000000000000000 x9 : a26f832180a6e600 [ 78.189503][ T5361] x8 : a26f832180a6e600 x7 : 0000000000000001 x6 : 0000000000000001 [ 78.190846][ T5361] x5 : ffff8000217b7378 x4 : ffff80001437f3e0 x3 : ffff800008509220 [ 78.192141][ T5361] x2 : 0000000000000001 x1 : 0000000100000000 x0 : 0000000000000026 [ 78.193408][ T5361] Call trace: [ 78.193935][ T5361] __btrfs_unlink_inode+0x904/0xaec [ 78.194784][ T5361] btrfs_unlink+0x108/0x258 [ 78.195511][ T5361] vfs_unlink+0x2e0/0x4f4 [ 78.196307][ T5361] do_unlinkat+0x328/0x618 [ 78.197063][ T5361] __arm64_sys_unlinkat+0xe0/0xfc [ 78.197929][ T5361] invoke_syscall+0x98/0x2b0 [ 78.198696][ T5361] el0_svc_common+0x138/0x258 [ 78.199523][ T5361] do_el0_svc+0x58/0x13c [ 78.200227][ T5361] el0_svc+0x78/0x1d0 [ 78.200874][ T5361] el0t_64_sync_handler+0xcc/0xe4 [ 78.201737][ T5361] el0t_64_sync+0x1a0/0x1a4 [ 78.202500][ T5361] irq event stamp: 81770 [ 78.203259][ T5361] hardirqs last enabled at (81769): [] __up_console_sem+0xb4/0xfc [ 78.204908][ T5361] hardirqs last disabled at (81770): [] el1_dbg+0x24/0x80 [ 78.206399][ T5361] softirqs last enabled at (81750): [] handle_softirqs+0xa40/0xbe4 [ 78.208110][ T5361] softirqs last disabled at (81653): [] __irq_exit_rcu+0x240/0x43c [ 78.209735][ T5361] ---[ end trace 98697d1551805da4 ]--- [ 78.211512][ T5361] BTRFS: error (device loop0) in __btrfs_unlink_inode:4182: errno=-12 Out of memory [ 78.213212][ T5361] BTRFS info (device loop0): forced readonly [ 78.413798][ T5382] loop0: detected capacity change from 0 to 32768 [ 78.468705][ T5382] BTRFS: device fsid c9fe44da-de57-406a-8241-57ec7d4412cf devid 1 transid 8 /dev/loop0 scanned by syz.0.36 (5382) [ 78.476162][ T5382] BTRFS info (device loop0): using crc32c (crc32c-generic) checksum algorithm [ 78.477868][ T5382] BTRFS info (device loop0): using free space tree [ 78.479062][ T5382] BTRFS info (device loop0): has skinny extents [ 78.496548][ T5382] BTRFS info (device loop0): enabling ssd optimizations [ 78.502265][ T5382] FAULT_INJECTION: forcing a failure. [ 78.502265][ T5382] name failslab, interval 1, probability 0, space 0, times 0 [ 78.504179][ T5382] CPU: 0 PID: 5382 Comm: syz.0.36 Tainted: G W syzkaller #0 [ 78.505584][ T5382] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/18/2026 [ 78.507258][ T5382] Call trace: [ 78.507760][ T5382] dump_backtrace+0x0/0x458 [ 78.508490][ T5382] show_stack+0x2c/0x3c [ 78.509177][ T5382] __dump_stack+0x30/0x40 [ 78.509867][ T5382] dump_stack_lvl+0xf4/0x15c [ 78.510593][ T5382] dump_stack+0x1c/0x5c [ 78.511289][ T5382] should_fail+0x3bc/0x514 [ 78.512028][ T5382] __should_failslab+0xbc/0x10c [ 78.512900][ T5382] should_failslab+0x10/0x28 [ 78.513675][ T5382] slab_pre_alloc_hook+0x64/0xe8 [ 78.514478][ T5382] kmem_cache_alloc_trace+0x98/0x3ec [ 78.515369][ T5382] btrfs_delete_delayed_dir_index+0x22c/0x56c [ 78.516425][ T5382] __btrfs_unlink_inode+0x350/0xaec [ 78.517292][ T5382] btrfs_unlink+0x108/0x258 [ 78.518058][ T5382] vfs_unlink+0x2e0/0x4f4 [ 78.518797][ T5382] do_unlinkat+0x328/0x618 [ 78.519574][ T5382] __arm64_sys_unlinkat+0xe0/0xfc [ 78.520438][ T5382] invoke_syscall+0x98/0x2b0 [ 78.521223][ T5382] el0_svc_common+0x138/0x258 [ 78.522016][ T5382] do_el0_svc+0x58/0x13c [ 78.522741][ T5382] el0_svc+0x78/0x1d0 [ 78.523408][ T5382] el0t_64_sync_handler+0xcc/0xe4 [ 78.524258][ T5382] el0t_64_sync+0x1a0/0x1a4 [ 78.527163][ T5382] ------------[ cut here ]------------ [ 78.528193][ T5382] WARNING: CPU: 0 PID: 5382 at fs/btrfs/inode.c:4182 __btrfs_unlink_inode+0x904/0xaec [ 78.529579][ T5382] Modules linked in: [ 78.530217][ T5382] CPU: 0 PID: 5382 Comm: syz.0.36 Tainted: G W syzkaller #0 [ 78.531650][ T5382] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/18/2026 [ 78.533286][ T5382] pstate: 62400005 (nZCv daif +PAN -UAO +TCO -DIT -SSBS BTYPE=--) [ 78.534573][ T5382] pc : __btrfs_unlink_inode+0x904/0xaec [ 78.535494][ T5382] lr : __btrfs_unlink_inode+0x904/0xaec [ 78.536347][ T5382] sp : ffff8000214c7a60 [ 78.536971][ T5382] x29: ffff8000214c7b10 x28: ffff0000d0a18000 x27: ffff0000ec998410 [ 78.538416][ T5382] x26: 0000000000000100 x25: 00000000fffffff4 x24: ffff0000cbc26420 [ 78.539797][ T5382] x23: ffff700004298f54 x22: dfff800000000000 x21: ffff0000ec82e220 [ 78.541200][ T5382] x20: ffff0000de7339f8 x19: 1fffe0001bce673f x18: 0000000000000001 [ 78.542618][ T5382] x17: 0000000000000000 x16: ffff80001125f448 x15: 00000000ffffffff [ 78.544010][ T5382] x14: 0000000000000001 x13: 1fffe000341f05ab x12: 0000000000ff0100 [ 78.545336][ T5382] x11: 0000000000000000 x10: 0000000000000000 x9 : 6556d7c61f998400 [ 78.546756][ T5382] x8 : 6556d7c61f998400 x7 : 0000000000000001 x6 : 0000000000000001 [ 78.548196][ T5382] x5 : ffff8000214c7378 x4 : ffff80001437f3e0 x3 : ffff800008509220 [ 78.549562][ T5382] x2 : 0000000000000001 x1 : 0000000100000000 x0 : 0000000000000026 [ 78.550913][ T5382] Call trace: [ 78.551441][ T5382] __btrfs_unlink_inode+0x904/0xaec [ 78.552301][ T5382] btrfs_unlink+0x108/0x258 [ 78.553049][ T5382] vfs_unlink+0x2e0/0x4f4 [ 78.553771][ T5382] do_unlinkat+0x328/0x618 [ 78.554537][ T5382] __arm64_sys_unlinkat+0xe0/0xfc [ 78.555379][ T5382] invoke_syscall+0x98/0x2b0 [ 78.556114][ T5382] el0_svc_common+0x138/0x258 [ 78.556870][ T5382] do_el0_svc+0x58/0x13c [ 78.557565][ T5382] el0_svc+0x78/0x1d0 [ 78.558290][ T5382] el0t_64_sync_handler+0xcc/0xe4 [ 78.559152][ T5382] el0t_64_sync+0x1a0/0x1a4 [ 78.559924][ T5382] irq event stamp: 80016 [ 78.560612][ T5382] hardirqs last enabled at (80015): [] __up_console_sem+0xb4/0xfc [ 78.562149][ T5382] hardirqs last disabled at (80016): [] el1_dbg+0x24/0x80 [ 78.563595][ T5382] softirqs last enabled at (79996): [] handle_softirqs+0xa40/0xbe4 [ 78.565261][ T5382] softirqs last disabled at (79977): [] __irq_exit_rcu+0x240/0x43c [ 78.566814][ T5382] ---[ end trace 98697d1551805da5 ]--- [ 78.570462][ T5382] BTRFS: error (device loop0) in __btrfs_unlink_inode:4182: errno=-12 Out of memory [ 78.572007][ T5382] BTRFS info (device loop0): forced readonly [ 78.765074][ T5404] loop0: detected capacity change from 0 to 32768 [ 78.812450][ T5404] BTRFS: device fsid c9fe44da-de57-406a-8241-57ec7d4412cf devid 1 transid 8 /dev/loop0 scanned by syz.0.37 (5404) [ 78.815636][ T5404] BTRFS info (device loop0): using crc32c (crc32c-generic) checksum algorithm [ 78.817136][ T5404] BTRFS info (device loop0): using free space tree [ 78.818321][ T5404] BTRFS info (device loop0): has skinny extents [ 78.827480][ T5404] BTRFS info (device loop0): enabling ssd optimizations [ 78.831822][ T5404] FAULT_INJECTION: forcing a failure. [ 78.831822][ T5404] name failslab, interval 1, probability 0, space 0, times 0 [ 78.834040][ T5404] CPU: 1 PID: 5404 Comm: syz.0.37 Tainted: G W syzkaller #0 [ 78.835466][ T5404] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/18/2026 [ 78.837127][ T5404] Call trace: [ 78.837683][ T5404] dump_backtrace+0x0/0x458 [ 78.838484][ T5404] show_stack+0x2c/0x3c [ 78.839245][ T5404] __dump_stack+0x30/0x40 [ 78.839966][ T5404] dump_stack_lvl+0xf4/0x15c [ 78.840750][ T5404] dump_stack+0x1c/0x5c [ 78.841467][ T5404] should_fail+0x3bc/0x514 [ 78.842219][ T5404] __should_failslab+0xbc/0x10c [ 78.843086][ T5404] should_failslab+0x10/0x28 [ 78.843850][ T5404] slab_pre_alloc_hook+0x64/0xe8 [ 78.844705][ T5404] kmem_cache_alloc_trace+0x98/0x3ec [ 78.845644][ T5404] btrfs_delete_delayed_dir_index+0x22c/0x56c [ 78.846664][ T5404] __btrfs_unlink_inode+0x350/0xaec [ 78.847547][ T5404] btrfs_unlink+0x108/0x258 [ 78.848302][ T5404] vfs_unlink+0x2e0/0x4f4 [ 78.849040][ T5404] do_unlinkat+0x328/0x618 [ 78.849825][ T5404] __arm64_sys_unlinkat+0xe0/0xfc [ 78.850711][ T5404] invoke_syscall+0x98/0x2b0 [ 78.851452][ T5404] el0_svc_common+0x138/0x258 [ 78.852256][ T5404] do_el0_svc+0x58/0x13c [ 78.852972][ T5404] el0_svc+0x78/0x1d0 [ 78.853637][ T5404] el0t_64_sync_handler+0xcc/0xe4 [ 78.854489][ T5404] el0t_64_sync+0x1a0/0x1a4 [ 78.856555][ T5404] ------------[ cut here ]------------ [ 78.857608][ T5404] WARNING: CPU: 1 PID: 5404 at fs/btrfs/inode.c:4182 __btrfs_unlink_inode+0x904/0xaec [ 78.859249][ T5404] Modules linked in: [ 78.859931][ T5404] CPU: 1 PID: 5404 Comm: syz.0.37 Tainted: G W syzkaller #0 [ 78.861398][ T5404] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/18/2026 [ 78.863047][ T5404] pstate: 62400005 (nZCv daif +PAN -UAO +TCO -DIT -SSBS BTYPE=--) [ 78.864346][ T5404] pc : __btrfs_unlink_inode+0x904/0xaec [ 78.865245][ T5404] lr : __btrfs_unlink_inode+0x904/0xaec [ 78.866132][ T5404] sp : ffff8000214c7a60 [ 78.866816][ T5404] x29: ffff8000214c7b10 x28: ffff0000d53b8000 x27: ffff0000e2529410 [ 78.868201][ T5404] x26: 0000000000000100 x25: 00000000fffffff4 x24: ffff0000c2b7de70 [ 78.869527][ T5404] x23: ffff700004298f54 x22: dfff800000000000 x21: ffff0000e24aebf0 [ 78.870929][ T5404] x20: ffff0000de7d0738 x19: 1fffe0001bcfa0e7 x18: 0000000000000001 [ 78.872296][ T5404] x17: 0000000000000000 x16: ffff80001125f448 x15: 00000000ffffffff [ 78.873687][ T5404] x14: 0000000000000001 x13: 1fffe000341f47ab x12: 0000000000ff0100 [ 78.875077][ T5404] x11: 0000000000000000 x10: 0000000000000000 x9 : b1f60d084347f800 [ 78.876453][ T5404] x8 : b1f60d084347f800 x7 : 0000000000000001 x6 : 0000000000000001 [ 78.877819][ T5404] x5 : ffff8000214c7378 x4 : ffff80001437f3e0 x3 : ffff800008509220 [ 78.879186][ T5404] x2 : 0000000000000001 x1 : 0000000100000000 x0 : 0000000000000026 [ 78.880580][ T5404] Call trace: [ 78.881151][ T5404] __btrfs_unlink_inode+0x904/0xaec [ 78.882035][ T5404] btrfs_unlink+0x108/0x258 [ 78.882779][ T5404] vfs_unlink+0x2e0/0x4f4 [ 78.883519][ T5404] do_unlinkat+0x328/0x618 [ 78.884218][ T5404] __arm64_sys_unlinkat+0xe0/0xfc [ 78.885046][ T5404] invoke_syscall+0x98/0x2b0 [ 78.885792][ T5404] el0_svc_common+0x138/0x258 [ 78.886525][ T5404] do_el0_svc+0x58/0x13c [ 78.887203][ T5404] el0_svc+0x78/0x1d0 [ 78.887826][ T5404] el0t_64_sync_handler+0xcc/0xe4 [ 78.888628][ T5404] el0t_64_sync+0x1a0/0x1a4 [ 78.889387][ T5404] irq event stamp: 79820 [ 78.890105][ T5404] hardirqs last enabled at (79819): [] __up_console_sem+0xb4/0xfc [ 78.891607][ T5404] hardirqs last disabled at (79820): [] el1_dbg+0x24/0x80 [ 78.892999][ T5404] softirqs last enabled at (79810): [] handle_softirqs+0xa40/0xbe4 [ 78.894579][ T5404] softirqs last disabled at (79805): [] __irq_exit_rcu+0x240/0x43c [ 78.896077][ T5404] ---[ end trace 98697d1551805da6 ]--- [ 78.897135][ T5404] BTRFS: error (device loop0) in __btrfs_unlink_inode:4182: errno=-12 Out of memory [ 78.899380][ T5404] BTRFS info (device loop0): forced readonly [ 79.035254][ T5426] loop0: detected capacity change from 0 to 32768 [ 79.060014][ T5426] BTRFS: device fsid c9fe44da-de57-406a-8241-57ec7d4412cf devid 1 transid 8 /dev/loop0 scanned by syz.0.38 (5426) [ 79.063476][ T5426] BTRFS info (device loop0): using crc32c (crc32c-generic) checksum algorithm [ 79.064947][ T5426] BTRFS info (device loop0): using free space tree [ 79.066051][ T5426] BTRFS info (device loop0): has skinny extents [ 79.074702][ T5426] BTRFS info (device loop0): enabling ssd optimizations [ 79.081041][ T5426] FAULT_INJECTION: forcing a failure. [ 79.081041][ T5426] name failslab, interval 1, probability 0, space 0, times 0 [ 79.083248][ T5426] CPU: 0 PID: 5426 Comm: syz.0.38 Tainted: G W syzkaller #0 [ 79.084694][ T5426] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/18/2026 [ 79.086229][ T5426] Call trace: [ 79.086833][ T5426] dump_backtrace+0x0/0x458 [ 79.087589][ T5426] show_stack+0x2c/0x3c [ 79.088338][ T5426] __dump_stack+0x30/0x40 [ 79.089082][ T5426] dump_stack_lvl+0xf4/0x15c [ 79.089852][ T5426] dump_stack+0x1c/0x5c [ 79.090533][ T5426] should_fail+0x3bc/0x514 [ 79.091268][ T5426] __should_failslab+0xbc/0x10c [ 79.092051][ T5426] should_failslab+0x10/0x28 [ 79.092829][ T5426] slab_pre_alloc_hook+0x64/0xe8 [ 79.093647][ T5426] kmem_cache_alloc_trace+0x98/0x3ec [ 79.094592][ T5426] btrfs_delete_delayed_dir_index+0x22c/0x56c [ 79.095653][ T5426] __btrfs_unlink_inode+0x350/0xaec [ 79.096586][ T5426] btrfs_unlink+0x108/0x258 [ 79.097379][ T5426] vfs_unlink+0x2e0/0x4f4 [ 79.098115][ T5426] do_unlinkat+0x328/0x618 [ 79.098842][ T5426] __arm64_sys_unlinkat+0xe0/0xfc [ 79.099677][ T5426] invoke_syscall+0x98/0x2b0 [ 79.100514][ T5426] el0_svc_common+0x138/0x258 [ 79.101332][ T5426] do_el0_svc+0x58/0x13c [ 79.102033][ T5426] el0_svc+0x78/0x1d0 [ 79.102700][ T5426] el0t_64_sync_handler+0xcc/0xe4 [ 79.103521][ T5426] el0t_64_sync+0x1a0/0x1a4 [ 79.106472][ T5426] ------------[ cut here ]------------ [ 79.107657][ T5426] WARNING: CPU: 0 PID: 5426 at fs/btrfs/inode.c:4182 __btrfs_unlink_inode+0x904/0xaec [ 79.109130][ T5426] Modules linked in: [ 79.109765][ T5426] CPU: 0 PID: 5426 Comm: syz.0.38 Tainted: G W syzkaller #0 [ 79.111173][ T5426] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/18/2026 [ 79.112719][ T5426] pstate: 62400005 (nZCv daif +PAN -UAO +TCO -DIT -SSBS BTYPE=--) [ 79.114083][ T5426] pc : __btrfs_unlink_inode+0x904/0xaec [ 79.114935][ T5426] lr : __btrfs_unlink_inode+0x904/0xaec [ 79.115832][ T5426] sp : ffff800021be7a60 [ 79.116456][ T5426] x29: ffff800021be7b10 x28: ffff0000ec538000 x27: ffff0000ec999010 [ 79.117743][ T5426] x26: 0000000000000100 x25: 00000000fffffff4 x24: ffff0000ec4a2b00 [ 79.119025][ T5426] x23: ffff70000437cf54 x22: dfff800000000000 x21: ffff0000ec87a740 [ 79.120413][ T5426] x20: ffff0000de733898 x19: 1fffe0001bce6713 x18: 0000000000000001 [ 79.121834][ T5426] x17: 0000000000000000 x16: ffff80001125f448 x15: 00000000ffffffff [ 79.123183][ T5426] x14: 0000000000000001 x13: 1fffe000341f05ab x12: 0000000000ff0100 [ 79.124564][ T5426] x11: 0000000000000000 x10: 0000000000000000 x9 : b7184469b0c23800 [ 79.125935][ T5426] x8 : b7184469b0c23800 x7 : 0000000000000001 x6 : 0000000000000001 [ 79.127319][ T5426] x5 : ffff800021be7378 x4 : ffff80001437f3e0 x3 : ffff800008509220 [ 79.128722][ T5426] x2 : 0000000000000001 x1 : 0000000100000000 x0 : 0000000000000026 [ 79.130088][ T5426] Call trace: [ 79.130650][ T5426] __btrfs_unlink_inode+0x904/0xaec [ 79.131522][ T5426] btrfs_unlink+0x108/0x258 [ 79.132293][ T5426] vfs_unlink+0x2e0/0x4f4 [ 79.133069][ T5426] do_unlinkat+0x328/0x618 [ 79.133819][ T5426] __arm64_sys_unlinkat+0xe0/0xfc [ 79.134650][ T5426] invoke_syscall+0x98/0x2b0 [ 79.135392][ T5426] el0_svc_common+0x138/0x258 [ 79.136203][ T5426] do_el0_svc+0x58/0x13c [ 79.136900][ T5426] el0_svc+0x78/0x1d0 [ 79.137635][ T5426] el0t_64_sync_handler+0xcc/0xe4 [ 79.138501][ T5426] el0t_64_sync+0x1a0/0x1a4 [ 79.139274][ T5426] irq event stamp: 81464 [ 79.139970][ T5426] hardirqs last enabled at (81463): [] __up_console_sem+0xb4/0xfc [ 79.141534][ T5426] hardirqs last disabled at (81464): [] el1_dbg+0x24/0x80 [ 79.143018][ T5426] softirqs last enabled at (81452): [] handle_softirqs+0xa40/0xbe4 [ 79.144623][ T5426] softirqs last disabled at (81375): [] __irq_exit_rcu+0x240/0x43c [ 79.146213][ T5426] ---[ end trace 98697d1551805da7 ]--- [ 79.149594][ T5426] BTRFS: error (device loop0) in __btrfs_unlink_inode:4182: errno=-12 Out of memory [ 79.151117][ T5426] BTRFS info (device loop0): forced readonly [ 79.301094][ T5448] loop0: detected capacity change from 0 to 32768 [ 79.368445][ T5448] BTRFS: device fsid c9fe44da-de57-406a-8241-57ec7d4412cf devid 1 transid 8 /dev/loop0 scanned by syz.0.39 (5448) [ 79.407615][ T5448] BTRFS info (device loop0): using crc32c (crc32c-generic) checksum algorithm [ 79.409047][ T5448] BTRFS info (device loop0): using free space tree [ 79.410145][ T5448] BTRFS info (device loop0): has skinny extents [ 79.419056][ T5448] BTRFS info (device loop0): enabling ssd optimizations [ 79.423254][ T5448] FAULT_INJECTION: forcing a failure. [ 79.423254][ T5448] name failslab, interval 1, probability 0, space 0, times 0 [ 79.425216][ T5448] CPU: 1 PID: 5448 Comm: syz.0.39 Tainted: G W syzkaller #0 [ 79.426643][ T5448] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/18/2026 [ 79.428343][ T5448] Call trace: [ 79.428867][ T5448] dump_backtrace+0x0/0x458 [ 79.429651][ T5448] show_stack+0x2c/0x3c [ 79.430315][ T5448] __dump_stack+0x30/0x40 [ 79.431041][ T5448] dump_stack_lvl+0xf4/0x15c [ 79.431778][ T5448] dump_stack+0x1c/0x5c [ 79.432475][ T5448] should_fail+0x3bc/0x514 [ 79.433216][ T5448] __should_failslab+0xbc/0x10c [ 79.434000][ T5448] should_failslab+0x10/0x28 [ 79.434711][ T5448] slab_pre_alloc_hook+0x64/0xe8 [ 79.435499][ T5448] kmem_cache_alloc_trace+0x98/0x3ec [ 79.436307][ T5448] btrfs_delete_delayed_dir_index+0x22c/0x56c [ 79.437301][ T5448] __btrfs_unlink_inode+0x350/0xaec [ 79.438155][ T5448] btrfs_unlink+0x108/0x258 [ 79.438866][ T5448] vfs_unlink+0x2e0/0x4f4 [ 79.439567][ T5448] do_unlinkat+0x328/0x618 [ 79.440307][ T5448] __arm64_sys_unlinkat+0xe0/0xfc [ 79.441113][ T5448] invoke_syscall+0x98/0x2b0 [ 79.441854][ T5448] el0_svc_common+0x138/0x258 [ 79.442609][ T5448] do_el0_svc+0x58/0x13c [ 79.443368][ T5448] el0_svc+0x78/0x1d0 [ 79.444014][ T5448] el0t_64_sync_handler+0xcc/0xe4 [ 79.444818][ T5448] el0t_64_sync+0x1a0/0x1a4 [ 79.446292][ T5448] ------------[ cut here ]------------ [ 79.447346][ T5448] WARNING: CPU: 1 PID: 5448 at fs/btrfs/inode.c:4182 __btrfs_unlink_inode+0x904/0xaec [ 79.448763][ T5448] Modules linked in: [ 79.449393][ T5448] CPU: 1 PID: 5448 Comm: syz.0.39 Tainted: G W syzkaller #0 [ 79.450831][ T5448] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/18/2026 [ 79.452487][ T5448] pstate: 62400005 (nZCv daif +PAN -UAO +TCO -DIT -SSBS BTYPE=--) [ 79.453792][ T5448] pc : __btrfs_unlink_inode+0x904/0xaec [ 79.454649][ T5448] lr : __btrfs_unlink_inode+0x904/0xaec [ 79.455515][ T5448] sp : ffff800021e37a60 [ 79.456155][ T5448] x29: ffff800021e37b10 x28: ffff0000e7dee000 x27: ffff0000e252b010 [ 79.457534][ T5448] x26: 0000000000000100 x25: 00000000fffffff4 x24: ffff0000ced9a6e0 [ 79.458867][ T5448] x23: ffff7000043c6f54 x22: dfff800000000000 x21: ffff0000e2551d70 [ 79.460382][ T5448] x20: ffff0000de7d0688 x19: 1fffe0001bcfa0d1 x18: 0000000000000001 [ 79.461723][ T5448] x17: 0000000000000000 x16: ffff80001125f448 x15: 00000000ffffffff [ 79.463118][ T5448] x14: 0000000000000001 x13: 1fffe000341f47ab x12: 0000000000ff0100 [ 79.464477][ T5448] x11: 0000000000000000 x10: 0000000000000000 x9 : b0f5f0765b52a500 [ 79.465823][ T5448] x8 : b0f5f0765b52a500 x7 : 0000000000000001 x6 : 0000000000000001 [ 79.467139][ T5448] x5 : ffff800021e37378 x4 : ffff80001437f3e0 x3 : ffff800008509220 [ 79.468481][ T5448] x2 : 0000000000000001 x1 : 0000000100000000 x0 : 0000000000000026 [ 79.469825][ T5448] Call trace: [ 79.470345][ T5448] __btrfs_unlink_inode+0x904/0xaec [ 79.471139][ T5448] btrfs_unlink+0x108/0x258 [ 79.471853][ T5448] vfs_unlink+0x2e0/0x4f4 [ 79.472588][ T5448] do_unlinkat+0x328/0x618 [ 79.473294][ T5448] __arm64_sys_unlinkat+0xe0/0xfc [ 79.474135][ T5448] invoke_syscall+0x98/0x2b0 [ 79.474906][ T5448] el0_svc_common+0x138/0x258 [ 79.475671][ T5448] do_el0_svc+0x58/0x13c [ 79.476402][ T5448] el0_svc+0x78/0x1d0 [ 79.477092][ T5448] el0t_64_sync_handler+0xcc/0xe4 [ 79.477964][ T5448] el0t_64_sync+0x1a0/0x1a4 [ 79.478735][ T5448] irq event stamp: 79852 [ 79.479418][ T5448] hardirqs last enabled at (79851): [] __up_console_sem+0xb4/0xfc [ 79.481020][ T5448] hardirqs last disabled at (79852): [] el1_dbg+0x24/0x80 [ 79.482439][ T5448] softirqs last enabled at (79842): [] handle_softirqs+0xa40/0xbe4 [ 79.483963][ T5448] softirqs last disabled at (79825): [] __irq_exit_rcu+0x240/0x43c [ 79.485549][ T5448] ---[ end trace 98697d1551805da8 ]--- [ 79.486952][ T5448] BTRFS: error (device loop0) in __btrfs_unlink_inode:4182: errno=-12 Out of memory [ 79.488605][ T5448] BTRFS info (device loop0): forced readonly [ 79.624565][ T5470] loop0: detected capacity change from 0 to 32768 [ 79.658481][ T5470] BTRFS: device fsid c9fe44da-de57-406a-8241-57ec7d4412cf devid 1 transid 8 /dev/loop0 scanned by syz.0.40 (5470) [ 79.720267][ T5470] BTRFS info (device loop0): using crc32c (crc32c-generic) checksum algorithm [ 79.721771][ T5470] BTRFS info (device loop0): using free space tree [ 79.722885][ T5470] BTRFS info (device loop0): has skinny extents [ 79.746926][ T5470] BTRFS info (device loop0): enabling ssd optimizations [ 79.751961][ T5470] FAULT_INJECTION: forcing a failure. [ 79.751961][ T5470] name failslab, interval 1, probability 0, space 0, times 0 [ 79.754133][ T5470] CPU: 0 PID: 5470 Comm: syz.0.40 Tainted: G W syzkaller #0 [ 79.755521][ T5470] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/18/2026 [ 79.757174][ T5470] Call trace: [ 79.757781][ T5470] dump_backtrace+0x0/0x458 [ 79.758503][ T5470] show_stack+0x2c/0x3c [ 79.759223][ T5470] __dump_stack+0x30/0x40 [ 79.759973][ T5470] dump_stack_lvl+0xf4/0x15c [ 79.760723][ T5470] dump_stack+0x1c/0x5c [ 79.761399][ T5470] should_fail+0x3bc/0x514 [ 79.762108][ T5470] __should_failslab+0xbc/0x10c [ 79.762992][ T5470] should_failslab+0x10/0x28 [ 79.763718][ T5470] slab_pre_alloc_hook+0x64/0xe8 [ 79.764561][ T5470] kmem_cache_alloc_trace+0x98/0x3ec [ 79.765417][ T5470] btrfs_delete_delayed_dir_index+0x22c/0x56c [ 79.766391][ T5470] __btrfs_unlink_inode+0x350/0xaec [ 79.767198][ T5470] btrfs_unlink+0x108/0x258 [ 79.767897][ T5470] vfs_unlink+0x2e0/0x4f4 [ 79.768604][ T5470] do_unlinkat+0x328/0x618 [ 79.769285][ T5470] __arm64_sys_unlinkat+0xe0/0xfc [ 79.770196][ T5470] invoke_syscall+0x98/0x2b0 [ 79.770936][ T5470] el0_svc_common+0x138/0x258 [ 79.771730][ T5470] do_el0_svc+0x58/0x13c [ 79.772439][ T5470] el0_svc+0x78/0x1d0 [ 79.773124][ T5470] el0t_64_sync_handler+0xcc/0xe4 [ 79.773908][ T5470] el0t_64_sync+0x1a0/0x1a4 [ 79.776081][ T5470] ------------[ cut here ]------------ [ 79.777390][ T5470] WARNING: CPU: 0 PID: 5470 at fs/btrfs/inode.c:4182 __btrfs_unlink_inode+0x904/0xaec [ 79.778884][ T5470] Modules linked in: [ 79.779605][ T5470] CPU: 0 PID: 5470 Comm: syz.0.40 Tainted: G W syzkaller #0 [ 79.781090][ T5470] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/18/2026 [ 79.782899][ T5470] pstate: 62400005 (nZCv daif +PAN -UAO +TCO -DIT -SSBS BTYPE=--) [ 79.784232][ T5470] pc : __btrfs_unlink_inode+0x904/0xaec [ 79.785200][ T5470] lr : __btrfs_unlink_inode+0x904/0xaec [ 79.786129][ T5470] sp : ffff800021e37a60 [ 79.786797][ T5470] x29: ffff800021e37b10 x28: ffff0000d9ed4000 x27: ffff0000ec998010 [ 79.788166][ T5470] x26: 0000000000000100 x25: 00000000fffffff4 x24: ffff0000eb881d10 [ 79.789553][ T5470] x23: ffff7000043c6f54 x22: dfff800000000000 x21: ffff0000ec8793a0 [ 79.790899][ T5470] x20: ffff0000de733aa8 x19: 1fffe0001bce6755 x18: 0000000000000001 [ 79.792259][ T5470] x17: 0000000000000000 x16: ffff80001125f448 x15: 00000000ffffffff [ 79.793679][ T5470] x14: 0000000000000001 x13: 1fffe000341f05ab x12: 0000000000ff0100 [ 79.795073][ T5470] x11: 0000000000000000 x10: 0000000000000000 x9 : bc8c9604866a4d00 [ 79.796481][ T5470] x8 : bc8c9604866a4d00 x7 : 0000000000000001 x6 : 0000000000000001 [ 79.797854][ T5470] x5 : ffff800021e37378 x4 : ffff80001437f3e0 x3 : ffff800008509220 [ 79.799271][ T5470] x2 : 0000000000000001 x1 : 0000000100000000 x0 : 0000000000000026 [ 79.800567][ T5470] Call trace: [ 79.801139][ T5470] __btrfs_unlink_inode+0x904/0xaec [ 79.802109][ T5470] btrfs_unlink+0x108/0x258 [ 79.802913][ T5470] vfs_unlink+0x2e0/0x4f4 [ 79.803638][ T5470] do_unlinkat+0x328/0x618 [ 79.804338][ T5470] __arm64_sys_unlinkat+0xe0/0xfc [ 79.805121][ T5470] invoke_syscall+0x98/0x2b0 [ 79.805884][ T5470] el0_svc_common+0x138/0x258 [ 79.806674][ T5470] do_el0_svc+0x58/0x13c [ 79.807415][ T5470] el0_svc+0x78/0x1d0 [ 79.808084][ T5470] el0t_64_sync_handler+0xcc/0xe4 [ 79.808968][ T5470] el0t_64_sync+0x1a0/0x1a4 [ 79.809773][ T5470] irq event stamp: 80102 [ 79.810453][ T5470] hardirqs last enabled at (80101): [] __up_console_sem+0xb4/0xfc [ 79.812046][ T5470] hardirqs last disabled at (80102): [] el1_dbg+0x24/0x80 [ 79.813519][ T5470] softirqs last enabled at (80092): [] handle_softirqs+0xa40/0xbe4 [ 79.815169][ T5470] softirqs last disabled at (79905): [] __irq_exit_rcu+0x240/0x43c [ 79.816828][ T5470] ---[ end trace 98697d1551805da9 ]--- [ 79.820070][ T5470] BTRFS: error (device loop0) in __btrfs_unlink_inode:4182: errno=-12 Out of memory [ 79.821633][ T5470] BTRFS info (device loop0): forced readonly [ 80.041463][ T5492] BTRFS: device fsid c9fe44da-de57-406a-8241-57ec7d4412cf devid 1 transid 8 /dev/loop0 scanned by syz.0.41 (5492) [ 80.045983][ T5492] BTRFS info (device loop0): using crc32c (crc32c-generic) checksum algorithm [ 80.047598][ T5492] BTRFS info (device loop0): using free space tree [ 80.048899][ T5492] BTRFS info (device loop0): has skinny extents [ 80.056531][ T5492] BTRFS info (device loop0): enabling ssd optimizations [ 80.061469][ T5492] FAULT_INJECTION: forcing a failure. [ 80.061469][ T5492] name failslab, interval 1, probability 0, space 0, times 0 [ 80.063739][ T5492] CPU: 1 PID: 5492 Comm: syz.0.41 Tainted: G W syzkaller #0 [ 80.065258][ T5492] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/18/2026 [ 80.066939][ T5492] Call trace: [ 80.067471][ T5492] dump_backtrace+0x0/0x458 [ 80.068234][ T5492] show_stack+0x2c/0x3c [ 80.068912][ T5492] __dump_stack+0x30/0x40 [ 80.069604][ T5492] dump_stack_lvl+0xf4/0x15c [ 80.070415][ T5492] dump_stack+0x1c/0x5c [ 80.071145][ T5492] should_fail+0x3bc/0x514 [ 80.071935][ T5492] __should_failslab+0xbc/0x10c [ 80.072718][ T5492] should_failslab+0x10/0x28 [ 80.073520][ T5492] slab_pre_alloc_hook+0x64/0xe8 [ 80.074405][ T5492] kmem_cache_alloc_trace+0x98/0x3ec [ 80.075362][ T5492] btrfs_delete_delayed_dir_index+0x22c/0x56c [ 80.076465][ T5492] __btrfs_unlink_inode+0x350/0xaec [ 80.077389][ T5492] btrfs_unlink+0x108/0x258 [ 80.078159][ T5492] vfs_unlink+0x2e0/0x4f4 [ 80.078930][ T5492] do_unlinkat+0x328/0x618 [ 80.079703][ T5492] __arm64_sys_unlinkat+0xe0/0xfc [ 80.080549][ T5492] invoke_syscall+0x98/0x2b0 [ 80.081314][ T5492] el0_svc_common+0x138/0x258 [ 80.082121][ T5492] do_el0_svc+0x58/0x13c [ 80.082810][ T5492] el0_svc+0x78/0x1d0 [ 80.083489][ T5492] el0t_64_sync_handler+0xcc/0xe4 [ 80.084338][ T5492] el0t_64_sync+0x1a0/0x1a4 [ 80.086647][ T5492] ------------[ cut here ]------------ [ 80.087814][ T5492] WARNING: CPU: 1 PID: 5492 at fs/btrfs/inode.c:4182 __btrfs_unlink_inode+0x904/0xaec [ 80.089216][ T5492] Modules linked in: [ 80.089806][ T5492] CPU: 1 PID: 5492 Comm: syz.0.41 Tainted: G W syzkaller #0 [ 80.091170][ T5492] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/18/2026 [ 80.092848][ T5492] pstate: 62400005 (nZCv daif +PAN -UAO +TCO -DIT -SSBS BTYPE=--) [ 80.094136][ T5492] pc : __btrfs_unlink_inode+0x904/0xaec [ 80.095052][ T5492] lr : __btrfs_unlink_inode+0x904/0xaec [ 80.095951][ T5492] sp : ffff800021fa7a60 [ 80.096644][ T5492] x29: ffff800021fa7b10 x28: ffff0000cb716000 x27: ffff0000e252b410 [ 80.098120][ T5492] x26: 0000000000000100 x25: 00000000fffffff4 x24: ffff0000c9223630 [ 80.099598][ T5492] x23: ffff7000043f4f54 x22: dfff800000000000 x21: ffff0000e25544b0 [ 80.100979][ T5492] x20: ffff0000de7d05d8 x19: 1fffe0001bcfa0bb x18: 0000000000000001 [ 80.102317][ T5492] x17: 0000000000000000 x16: ffff80001125f448 x15: 00000000ffffffff [ 80.103736][ T5492] x14: 0000000000000001 x13: 1fffe000341f47ab x12: 0000000000ff0100 [ 80.105108][ T5492] x11: 0000000000000000 x10: 0000000000000000 x9 : cb4bb08b62d84a00 [ 80.106515][ T5492] x8 : cb4bb08b62d84a00 x7 : 0000000000000001 x6 : 0000000000000001 [ 80.107861][ T5492] x5 : ffff800021fa7378 x4 : ffff80001437f3e0 x3 : ffff800008509220 [ 80.109196][ T5492] x2 : 0000000000000001 x1 : 0000000100000000 x0 : 0000000000000026 [ 80.110627][ T5492] Call trace: [ 80.111154][ T5492] __btrfs_unlink_inode+0x904/0xaec [ 80.112071][ T5492] btrfs_unlink+0x108/0x258 [ 80.112807][ T5492] vfs_unlink+0x2e0/0x4f4 [ 80.113565][ T5492] do_unlinkat+0x328/0x618 [ 80.114303][ T5492] __arm64_sys_unlinkat+0xe0/0xfc [ 80.115218][ T5492] invoke_syscall+0x98/0x2b0 [ 80.116018][ T5492] el0_svc_common+0x138/0x258 [ 80.116863][ T5492] do_el0_svc+0x58/0x13c [ 80.117621][ T5492] el0_svc+0x78/0x1d0 [ 80.118354][ T5492] el0t_64_sync_handler+0xcc/0xe4 [ 80.119240][ T5492] el0t_64_sync+0x1a0/0x1a4 [ 80.120070][ T5492] irq event stamp: 80118 [ 80.120839][ T5492] hardirqs last enabled at (80117): [] __up_console_sem+0xb4/0xfc [ 80.122417][ T5492] hardirqs last disabled at (80118): [] el1_dbg+0x24/0x80 [ 80.123966][ T5492] softirqs last enabled at (80106): [] handle_softirqs+0xa40/0xbe4 [ 80.125649][ T5492] softirqs last disabled at (80085): [] __irq_exit_rcu+0x240/0x43c [ 80.127267][ T5492] ---[ end trace 98697d1551805daa ]--- [ 80.129248][ T5492] BTRFS: error (device loop0) in __btrfs_unlink_inode:4182: errno=-12 Out of memory [ 80.130657][ T5492] BTRFS info (device loop0): forced readonly [ 80.358532][ T5514] BTRFS: device fsid c9fe44da-de57-406a-8241-57ec7d4412cf devid 1 transid 8 /dev/loop0 scanned by syz.0.42 (5514) [ 80.361971][ T5514] BTRFS info (device loop0): using crc32c (crc32c-generic) checksum algorithm [ 80.363603][ T5514] BTRFS info (device loop0): using free space tree [ 80.364737][ T5514] BTRFS info (device loop0): has skinny extents [ 80.372956][ T5514] BTRFS info (device loop0): enabling ssd optimizations [ 80.378128][ T5514] FAULT_INJECTION: forcing a failure. [ 80.378128][ T5514] name failslab, interval 1, probability 0, space 0, times 0 [ 80.380204][ T5514] CPU: 1 PID: 5514 Comm: syz.0.42 Tainted: G W syzkaller #0 [ 80.381656][ T5514] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/18/2026 [ 80.383415][ T5514] Call trace: [ 80.383951][ T5514] dump_backtrace+0x0/0x458 [ 80.384728][ T5514] show_stack+0x2c/0x3c [ 80.385418][ T5514] __dump_stack+0x30/0x40 [ 80.386140][ T5514] dump_stack_lvl+0xf4/0x15c [ 80.386906][ T5514] dump_stack+0x1c/0x5c [ 80.387651][ T5514] should_fail+0x3bc/0x514 [ 80.388451][ T5514] __should_failslab+0xbc/0x10c [ 80.389325][ T5514] should_failslab+0x10/0x28 [ 80.390153][ T5514] slab_pre_alloc_hook+0x64/0xe8 [ 80.391020][ T5514] kmem_cache_alloc_trace+0x98/0x3ec [ 80.391947][ T5514] btrfs_delete_delayed_dir_index+0x22c/0x56c [ 80.392958][ T5514] __btrfs_unlink_inode+0x350/0xaec [ 80.393871][ T5514] btrfs_unlink+0x108/0x258 [ 80.394628][ T5514] vfs_unlink+0x2e0/0x4f4 [ 80.395383][ T5514] do_unlinkat+0x328/0x618 [ 80.396107][ T5514] __arm64_sys_unlinkat+0xe0/0xfc [ 80.396984][ T5514] invoke_syscall+0x98/0x2b0 [ 80.397780][ T5514] el0_svc_common+0x138/0x258 [ 80.398545][ T5514] do_el0_svc+0x58/0x13c [ 80.399279][ T5514] el0_svc+0x78/0x1d0 [ 80.399965][ T5514] el0t_64_sync_handler+0xcc/0xe4 [ 80.400798][ T5514] el0t_64_sync+0x1a0/0x1a4 [ 80.402384][ T5514] ------------[ cut here ]------------ [ 80.403317][ T5514] WARNING: CPU: 1 PID: 5514 at fs/btrfs/inode.c:4182 __btrfs_unlink_inode+0x904/0xaec [ 80.404742][ T5514] Modules linked in: [ 80.405395][ T5514] CPU: 1 PID: 5514 Comm: syz.0.42 Tainted: G W syzkaller #0 [ 80.406890][ T5514] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/18/2026 [ 80.408702][ T5514] pstate: 62400005 (nZCv daif +PAN -UAO +TCO -DIT -SSBS BTYPE=--) [ 80.410092][ T5514] pc : __btrfs_unlink_inode+0x904/0xaec [ 80.410995][ T5514] lr : __btrfs_unlink_inode+0x904/0xaec [ 80.411883][ T5514] sp : ffff800022087a60 [ 80.412610][ T5514] x29: ffff800022087b10 x28: ffff0000c9cce000 x27: ffff0000e252b810 [ 80.414003][ T5514] x26: 0000000000000100 x25: 00000000fffffff4 x24: ffff0000c27cda50 [ 80.415387][ T5514] x23: ffff700004410f54 x22: dfff800000000000 x21: ffff0000e2556bf0 [ 80.416791][ T5514] x20: ffff0000de7d0268 x19: 1fffe0001bcfa04d x18: 0000000000000001 [ 80.418242][ T5514] x17: 0000000000000000 x16: ffff80001125f448 x15: 00000000ffffffff [ 80.419589][ T5514] x14: 0000000000000001 x13: 1fffe000341f47ab x12: 0000000000ff0100 [ 80.420944][ T5514] x11: 0000000000000000 x10: 0000000000000000 x9 : 9ea9a3a621243700 [ 80.422315][ T5514] x8 : 9ea9a3a621243700 x7 : 0000000000000001 x6 : 0000000000000001 [ 80.423833][ T5514] x5 : ffff800022087378 x4 : ffff80001437f3e0 x3 : ffff800008509220 [ 80.425272][ T5514] x2 : 0000000000000001 x1 : 0000000100000000 x0 : 0000000000000026 [ 80.426742][ T5514] Call trace: [ 80.427254][ T5514] __btrfs_unlink_inode+0x904/0xaec [ 80.428177][ T5514] btrfs_unlink+0x108/0x258 [ 80.428918][ T5514] vfs_unlink+0x2e0/0x4f4 [ 80.429647][ T5514] do_unlinkat+0x328/0x618 [ 80.430446][ T5514] __arm64_sys_unlinkat+0xe0/0xfc [ 80.431244][ T5514] invoke_syscall+0x98/0x2b0 [ 80.432073][ T5514] el0_svc_common+0x138/0x258 [ 80.432880][ T5514] do_el0_svc+0x58/0x13c [ 80.433701][ T5514] el0_svc+0x78/0x1d0 [ 80.434354][ T5514] el0t_64_sync_handler+0xcc/0xe4 [ 80.435164][ T5514] el0t_64_sync+0x1a0/0x1a4 [ 80.435944][ T5514] irq event stamp: 79988 [ 80.436649][ T5514] hardirqs last enabled at (79987): [] __up_console_sem+0xb4/0xfc [ 80.438360][ T5514] hardirqs last disabled at (79988): [] el1_dbg+0x24/0x80 [ 80.439877][ T5514] softirqs last enabled at (79968): [] handle_softirqs+0xa40/0xbe4 [ 80.441582][ T5514] softirqs last disabled at (79863): [] __irq_exit_rcu+0x240/0x43c [ 80.443272][ T5514] ---[ end trace 98697d1551805dab ]--- [ 80.445204][ T5514] BTRFS: error (device loop0) in __btrfs_unlink_inode:4182: errno=-12 Out of memory [ 80.446722][ T5514] BTRFS info (device loop0): forced readonly [ 80.671384][ T5536] BTRFS: device fsid c9fe44da-de57-406a-8241-57ec7d4412cf devid 1 transid 8 /dev/loop0 scanned by syz.0.43 (5536) [ 80.675543][ T5536] BTRFS info (device loop0): using crc32c (crc32c-generic) checksum algorithm [ 80.677446][ T5536] BTRFS info (device loop0): using free space tree [ 80.678621][ T5536] BTRFS info (device loop0): has skinny extents [ 80.685962][ T5536] BTRFS info (device loop0): enabling ssd optimizations [ 80.691054][ T5536] FAULT_INJECTION: forcing a failure. [ 80.691054][ T5536] name failslab, interval 1, probability 0, space 0, times 0 [ 80.693233][ T5536] CPU: 1 PID: 5536 Comm: syz.0.43 Tainted: G W syzkaller #0 [ 80.694746][ T5536] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/18/2026 [ 80.696524][ T5536] Call trace: [ 80.697065][ T5536] dump_backtrace+0x0/0x458 [ 80.697878][ T5536] show_stack+0x2c/0x3c [ 80.698674][ T5536] __dump_stack+0x30/0x40 [ 80.699381][ T5536] dump_stack_lvl+0xf4/0x15c [ 80.700243][ T5536] dump_stack+0x1c/0x5c [ 80.700949][ T5536] should_fail+0x3bc/0x514 [ 80.701758][ T5536] __should_failslab+0xbc/0x10c [ 80.702619][ T5536] should_failslab+0x10/0x28 [ 80.703419][ T5536] slab_pre_alloc_hook+0x64/0xe8 [ 80.704220][ T5536] kmem_cache_alloc_trace+0x98/0x3ec [ 80.705064][ T5536] btrfs_delete_delayed_dir_index+0x22c/0x56c [ 80.706151][ T5536] __btrfs_unlink_inode+0x350/0xaec [ 80.707097][ T5536] btrfs_unlink+0x108/0x258 [ 80.707887][ T5536] vfs_unlink+0x2e0/0x4f4 [ 80.708646][ T5536] do_unlinkat+0x328/0x618 [ 80.709441][ T5536] __arm64_sys_unlinkat+0xe0/0xfc [ 80.710382][ T5536] invoke_syscall+0x98/0x2b0 [ 80.711154][ T5536] el0_svc_common+0x138/0x258 [ 80.711968][ T5536] do_el0_svc+0x58/0x13c [ 80.712698][ T5536] el0_svc+0x78/0x1d0 [ 80.713355][ T5536] el0t_64_sync_handler+0xcc/0xe4 [ 80.714192][ T5536] el0t_64_sync+0x1a0/0x1a4 [ 80.715897][ T5536] ------------[ cut here ]------------ [ 80.716898][ T5536] WARNING: CPU: 1 PID: 5536 at fs/btrfs/inode.c:4182 __btrfs_unlink_inode+0x904/0xaec [ 80.718529][ T5536] Modules linked in: [ 80.719256][ T5536] CPU: 1 PID: 5536 Comm: syz.0.43 Tainted: G W syzkaller #0 [ 80.720752][ T5536] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/18/2026 [ 80.722497][ T5536] pstate: 62400005 (nZCv daif +PAN -UAO +TCO -DIT -SSBS BTYPE=--) [ 80.723930][ T5536] pc : __btrfs_unlink_inode+0x904/0xaec [ 80.724854][ T5536] lr : __btrfs_unlink_inode+0x904/0xaec [ 80.725817][ T5536] sp : ffff800022647a60 [ 80.726485][ T5536] x29: ffff800022647b10 x28: ffff0000d80fc000 x27: ffff0000e252bc10 [ 80.727801][ T5536] x26: 0000000000000100 x25: 00000000fffffff4 x24: ffff0000d588bbb0 [ 80.729282][ T5536] x23: ffff7000044c8f54 x22: dfff800000000000 x21: ffff0000e26a13a0 [ 80.730707][ T5536] x20: ffff0000de7d0cb8 x19: 1fffe0001bcfa197 x18: 0000000000000001 [ 80.732095][ T5536] x17: 0000000000000000 x16: ffff80001125f448 x15: 00000000ffffffff [ 80.733493][ T5536] x14: 0000000000000001 x13: 1fffe000341f47ab x12: 0000000000ff0100 [ 80.734893][ T5536] x11: 0000000000000000 x10: 0000000000000000 x9 : 3d8db58197e62400 [ 80.736281][ T5536] x8 : 3d8db58197e62400 x7 : 0000000000000001 x6 : 0000000000000001 [ 80.737677][ T5536] x5 : ffff800022647378 x4 : ffff80001437f3e0 x3 : ffff800008509220 [ 80.739041][ T5536] x2 : 0000000000000001 x1 : 0000000100000000 x0 : 0000000000000026 [ 80.740460][ T5536] Call trace: [ 80.741013][ T5536] __btrfs_unlink_inode+0x904/0xaec [ 80.741828][ T5536] btrfs_unlink+0x108/0x258 [ 80.742555][ T5536] vfs_unlink+0x2e0/0x4f4 [ 80.743317][ T5536] do_unlinkat+0x328/0x618 [ 80.744016][ T5536] __arm64_sys_unlinkat+0xe0/0xfc [ 80.744900][ T5536] invoke_syscall+0x98/0x2b0 [ 80.745688][ T5536] el0_svc_common+0x138/0x258 [ 80.746537][ T5536] do_el0_svc+0x58/0x13c [ 80.747214][ T5536] el0_svc+0x78/0x1d0 [ 80.747909][ T5536] el0t_64_sync_handler+0xcc/0xe4 [ 80.748807][ T5536] el0t_64_sync+0x1a0/0x1a4 [ 80.749575][ T5536] irq event stamp: 81168 [ 80.750335][ T5536] hardirqs last enabled at (81167): [] __up_console_sem+0xb4/0xfc [ 80.752011][ T5536] hardirqs last disabled at (81168): [] el1_dbg+0x24/0x80 [ 80.753517][ T5536] softirqs last enabled at (81148): [] handle_softirqs+0xa40/0xbe4 [ 80.755133][ T5536] softirqs last disabled at (81137): [] __irq_exit_rcu+0x240/0x43c [ 80.756788][ T5536] ---[ end trace 98697d1551805dac ]--- [ 80.758038][ T5536] BTRFS: error (device loop0) in __btrfs_unlink_inode:4182: errno=-12 Out of memory [ 80.759586][ T5536] BTRFS info (device loop0): forced readonly [ 81.012268][ T5558] BTRFS: device fsid c9fe44da-de57-406a-8241-57ec7d4412cf devid 1 transid 8 /dev/loop0 scanned by syz.0.44 (5558) [ 81.018139][ T5558] BTRFS info (device loop0): using crc32c (crc32c-generic) checksum algorithm [ 81.019691][ T5558] BTRFS info (device loop0): using free space tree [ 81.020833][ T5558] BTRFS info (device loop0): has skinny extents [ 81.028979][ T5558] BTRFS info (device loop0): enabling ssd optimizations [ 81.032979][ T5558] FAULT_INJECTION: forcing a failure. [ 81.032979][ T5558] name failslab, interval 1, probability 0, space 0, times 0 [ 81.035084][ T5558] CPU: 1 PID: 5558 Comm: syz.0.44 Tainted: G W syzkaller #0 [ 81.036571][ T5558] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/18/2026 [ 81.038251][ T5558] Call trace: [ 81.038801][ T5558] dump_backtrace+0x0/0x458 [ 81.039575][ T5558] show_stack+0x2c/0x3c [ 81.040265][ T5558] __dump_stack+0x30/0x40 [ 81.041002][ T5558] dump_stack_lvl+0xf4/0x15c [ 81.041805][ T5558] dump_stack+0x1c/0x5c [ 81.042540][ T5558] should_fail+0x3bc/0x514 [ 81.043298][ T5558] __should_failslab+0xbc/0x10c [ 81.044186][ T5558] should_failslab+0x10/0x28 [ 81.044996][ T5558] slab_pre_alloc_hook+0x64/0xe8 [ 81.045846][ T5558] kmem_cache_alloc_trace+0x98/0x3ec [ 81.046829][ T5558] btrfs_delete_delayed_dir_index+0x22c/0x56c [ 81.047906][ T5558] __btrfs_unlink_inode+0x350/0xaec [ 81.048803][ T5558] btrfs_unlink+0x108/0x258 [ 81.049531][ T5558] vfs_unlink+0x2e0/0x4f4 [ 81.050264][ T5558] do_unlinkat+0x328/0x618 [ 81.051073][ T5558] __arm64_sys_unlinkat+0xe0/0xfc [ 81.051983][ T5558] invoke_syscall+0x98/0x2b0 [ 81.052764][ T5558] el0_svc_common+0x138/0x258 [ 81.053559][ T5558] do_el0_svc+0x58/0x13c [ 81.054309][ T5558] el0_svc+0x78/0x1d0 [ 81.055095][ T5558] el0t_64_sync_handler+0xcc/0xe4 [ 81.055967][ T5558] el0t_64_sync+0x1a0/0x1a4 [ 81.061916][ T5558] ------------[ cut here ]------------ [ 81.062961][ T5558] WARNING: CPU: 1 PID: 5558 at fs/btrfs/inode.c:4182 __btrfs_unlink_inode+0x904/0xaec [ 81.064442][ T5558] Modules linked in: [ 81.065119][ T5558] CPU: 1 PID: 5558 Comm: syz.0.44 Tainted: G W syzkaller #0 [ 81.066562][ T5558] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/18/2026 [ 81.068325][ T5558] pstate: 62400005 (nZCv daif +PAN -UAO +TCO -DIT -SSBS BTYPE=--) [ 81.069698][ T5558] pc : __btrfs_unlink_inode+0x904/0xaec [ 81.070753][ T5558] lr : __btrfs_unlink_inode+0x904/0xaec [ 81.071709][ T5558] sp : ffff800022797a60 [ 81.072424][ T5558] x29: ffff800022797b10 x28: ffff0000ca8fa000 x27: ffff0000e252a410 [ 81.073913][ T5558] x26: 0000000000000100 x25: 00000000fffffff4 x24: ffff0000dbd71d10 [ 81.075315][ T5558] x23: ffff7000044f2f54 x22: dfff800000000000 x21: ffff0000e26a3ae0 [ 81.076744][ T5558] x20: ffff0000de7d09f8 x19: 1fffe0001bcfa13f x18: 0000000000000001 [ 81.078082][ T5558] x17: 0000000000000000 x16: ffff80001125f448 x15: 00000000ffffffff [ 81.079544][ T5558] x14: 0000000000000001 x13: 1fffe000341f47ab x12: 0000000000ff0100 [ 81.080916][ T5558] x11: 0000000000000000 x10: 0000000000000000 x9 : ec05af6baf1cb600 [ 81.082254][ T5558] x8 : ec05af6baf1cb600 x7 : 0000000000000001 x6 : 0000000000000001 [ 81.083712][ T5558] x5 : ffff800022797378 x4 : ffff80001437f3e0 x3 : ffff800008509220 [ 81.085187][ T5558] x2 : 0000000000000001 x1 : 0000000100000000 x0 : 0000000000000026 [ 81.086634][ T5558] Call trace: [ 81.087202][ T5558] __btrfs_unlink_inode+0x904/0xaec [ 81.088107][ T5558] btrfs_unlink+0x108/0x258 [ 81.088956][ T5558] vfs_unlink+0x2e0/0x4f4 [ 81.089688][ T5558] do_unlinkat+0x328/0x618 [ 81.090441][ T5558] __arm64_sys_unlinkat+0xe0/0xfc [ 81.091331][ T5558] invoke_syscall+0x98/0x2b0 [ 81.092119][ T5558] el0_svc_common+0x138/0x258 [ 81.092912][ T5558] do_el0_svc+0x58/0x13c [ 81.093615][ T5558] el0_svc+0x78/0x1d0 [ 81.094312][ T5558] el0t_64_sync_handler+0xcc/0xe4 [ 81.095193][ T5558] el0t_64_sync+0x1a0/0x1a4 [ 81.095953][ T5558] irq event stamp: 79550 [ 81.096690][ T5558] hardirqs last enabled at (79549): [] __up_console_sem+0xb4/0xfc [ 81.098254][ T5558] hardirqs last disabled at (79550): [] el1_dbg+0x24/0x80 [ 81.099690][ T5558] softirqs last enabled at (79530): [] handle_softirqs+0xa40/0xbe4 [ 81.101284][ T5558] softirqs last disabled at (79505): [] __irq_exit_rcu+0x240/0x43c [ 81.102907][ T5558] ---[ end trace 98697d1551805dad ]--- [ 81.104543][ T5558] BTRFS: error (device loop0) in __btrfs_unlink_inode:4182: errno=-12 Out of memory [ 81.106097][ T5558] BTRFS info (device loop0): forced readonly [ 81.332239][ T5580] BTRFS: device fsid c9fe44da-de57-406a-8241-57ec7d4412cf devid 1 transid 8 /dev/loop0 scanned by syz.0.45 (5580) [ 81.335741][ T5580] BTRFS info (device loop0): using crc32c (crc32c-generic) checksum algorithm [ 81.337608][ T5580] BTRFS info (device loop0): using free space tree [ 81.338732][ T5580] BTRFS info (device loop0): has skinny extents [ 81.351707][ T5580] BTRFS info (device loop0): enabling ssd optimizations [ 81.356623][ T5580] FAULT_INJECTION: forcing a failure. [ 81.356623][ T5580] name failslab, interval 1, probability 0, space 0, times 0 [ 81.359575][ T5580] CPU: 0 PID: 5580 Comm: syz.0.45 Tainted: G W syzkaller #0 [ 81.361005][ T5580] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/18/2026 [ 81.362670][ T5580] Call trace: [ 81.363205][ T5580] dump_backtrace+0x0/0x458 [ 81.363999][ T5580] show_stack+0x2c/0x3c [ 81.364707][ T5580] __dump_stack+0x30/0x40 [ 81.365427][ T5580] dump_stack_lvl+0xf4/0x15c [ 81.366248][ T5580] dump_stack+0x1c/0x5c [ 81.366943][ T5580] should_fail+0x3bc/0x514 [ 81.367705][ T5580] __should_failslab+0xbc/0x10c [ 81.368495][ T5580] should_failslab+0x10/0x28 [ 81.369300][ T5580] slab_pre_alloc_hook+0x64/0xe8 [ 81.370191][ T5580] kmem_cache_alloc_trace+0x98/0x3ec [ 81.371118][ T5580] btrfs_delete_delayed_dir_index+0x22c/0x56c [ 81.372242][ T5580] __btrfs_unlink_inode+0x350/0xaec [ 81.373179][ T5580] btrfs_unlink+0x108/0x258 [ 81.373933][ T5580] vfs_unlink+0x2e0/0x4f4 [ 81.374631][ T5580] do_unlinkat+0x328/0x618 [ 81.375397][ T5580] __arm64_sys_unlinkat+0xe0/0xfc [ 81.376322][ T5580] invoke_syscall+0x98/0x2b0 [ 81.377097][ T5580] el0_svc_common+0x138/0x258 [ 81.377901][ T5580] do_el0_svc+0x58/0x13c [ 81.378606][ T5580] el0_svc+0x78/0x1d0 [ 81.379323][ T5580] el0t_64_sync_handler+0xcc/0xe4 [ 81.380205][ T5580] el0t_64_sync+0x1a0/0x1a4 [ 81.382972][ T5580] ------------[ cut here ]------------ [ 81.383925][ T5580] WARNING: CPU: 0 PID: 5580 at fs/btrfs/inode.c:4182 __btrfs_unlink_inode+0x904/0xaec [ 81.385444][ T5580] Modules linked in: [ 81.386132][ T5580] CPU: 0 PID: 5580 Comm: syz.0.45 Tainted: G W syzkaller #0 [ 81.387721][ T5580] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/18/2026 [ 81.389395][ T5580] pstate: 62400005 (nZCv daif +PAN -UAO +TCO -DIT -SSBS BTYPE=--) [ 81.390690][ T5580] pc : __btrfs_unlink_inode+0x904/0xaec [ 81.391620][ T5580] lr : __btrfs_unlink_inode+0x904/0xaec [ 81.392505][ T5580] sp : ffff8000227a7a60 [ 81.393176][ T5580] x29: ffff8000227a7b10 x28: ffff0000d8332000 x27: ffff0000ec999410 [ 81.394467][ T5580] x26: 0000000000000100 x25: 00000000fffffff4 x24: ffff0000c7665f20 [ 81.395826][ T5580] x23: ffff7000044f4f54 x22: dfff800000000000 x21: ffff0000e2576220 [ 81.397102][ T5580] x20: ffff0000de733c08 x19: 1fffe0001bce6781 x18: 0000000000000001 [ 81.398442][ T5580] x17: 0000000000000000 x16: ffff80001125f448 x15: 00000000ffffffff [ 81.399844][ T5580] x14: 0000000000000001 x13: 1fffe000341f05ab x12: 0000000000ff0100 [ 81.401284][ T5580] x11: 0000000000000000 x10: 0000000000000000 x9 : 809560df9ef91200 [ 81.402774][ T5580] x8 : 809560df9ef91200 x7 : 0000000000000001 x6 : 0000000000000001 [ 81.404195][ T5580] x5 : ffff8000227a7378 x4 : ffff80001437f3e0 x3 : ffff800008509220 [ 81.405638][ T5580] x2 : 0000000000000001 x1 : 0000000100000000 x0 : 0000000000000026 [ 81.407065][ T5580] Call trace: [ 81.407611][ T5580] __btrfs_unlink_inode+0x904/0xaec [ 81.408503][ T5580] btrfs_unlink+0x108/0x258 [ 81.409285][ T5580] vfs_unlink+0x2e0/0x4f4 [ 81.410059][ T5580] do_unlinkat+0x328/0x618 [ 81.410863][ T5580] __arm64_sys_unlinkat+0xe0/0xfc [ 81.411725][ T5580] invoke_syscall+0x98/0x2b0 [ 81.412455][ T5580] el0_svc_common+0x138/0x258 [ 81.413237][ T5580] do_el0_svc+0x58/0x13c [ 81.413994][ T5580] el0_svc+0x78/0x1d0 [ 81.414668][ T5580] el0t_64_sync_handler+0xcc/0xe4 [ 81.415510][ T5580] el0t_64_sync+0x1a0/0x1a4 [ 81.416301][ T5580] irq event stamp: 79670 [ 81.416993][ T5580] hardirqs last enabled at (79669): [] __up_console_sem+0xb4/0xfc [ 81.418491][ T5580] hardirqs last disabled at (79670): [] el1_dbg+0x24/0x80 [ 81.420006][ T5580] softirqs last enabled at (79650): [] handle_softirqs+0xa40/0xbe4 [ 81.421746][ T5580] softirqs last disabled at (79633): [] __irq_exit_rcu+0x240/0x43c [ 81.423301][ T5580] ---[ end trace 98697d1551805dae ]--- [ 81.426707][ T5580] BTRFS: error (device loop0) in __btrfs_unlink_inode:4182: errno=-12 Out of memory [ 81.428459][ T5580] BTRFS info (device loop0): forced readonly [ 81.641744][ T5602] BTRFS: device fsid c9fe44da-de57-406a-8241-57ec7d4412cf devid 1 transid 8 /dev/loop0 scanned by syz.0.46 (5602) [ 81.646763][ T5602] BTRFS info (device loop0): using crc32c (crc32c-generic) checksum algorithm [ 81.648531][ T5602] BTRFS info (device loop0): using free space tree [ 81.649665][ T5602] BTRFS info (device loop0): has skinny extents [ 81.661255][ T5602] BTRFS info (device loop0): enabling ssd optimizations [ 81.665522][ T5602] FAULT_INJECTION: forcing a failure. [ 81.665522][ T5602] name failslab, interval 1, probability 0, space 0, times 0 [ 81.668551][ T5602] CPU: 0 PID: 5602 Comm: syz.0.46 Tainted: G W syzkaller #0 [ 81.669946][ T5602] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/18/2026 [ 81.671644][ T5602] Call trace: [ 81.672235][ T5602] dump_backtrace+0x0/0x458 [ 81.673020][ T5602] show_stack+0x2c/0x3c [ 81.673733][ T5602] __dump_stack+0x30/0x40 [ 81.674477][ T5602] dump_stack_lvl+0xf4/0x15c [ 81.675303][ T5602] dump_stack+0x1c/0x5c [ 81.676018][ T5602] should_fail+0x3bc/0x514 [ 81.676819][ T5602] __should_failslab+0xbc/0x10c [ 81.677660][ T5602] should_failslab+0x10/0x28 [ 81.678427][ T5602] slab_pre_alloc_hook+0x64/0xe8 [ 81.679300][ T5602] kmem_cache_alloc_trace+0x98/0x3ec [ 81.680203][ T5602] btrfs_delete_delayed_dir_index+0x22c/0x56c [ 81.681199][ T5602] __btrfs_unlink_inode+0x350/0xaec [ 81.682032][ T5602] btrfs_unlink+0x108/0x258 [ 81.682783][ T5602] vfs_unlink+0x2e0/0x4f4 [ 81.683544][ T5602] do_unlinkat+0x328/0x618 [ 81.684335][ T5602] __arm64_sys_unlinkat+0xe0/0xfc [ 81.685169][ T5602] invoke_syscall+0x98/0x2b0 [ 81.685974][ T5602] el0_svc_common+0x138/0x258 [ 81.686765][ T5602] do_el0_svc+0x58/0x13c [ 81.687496][ T5602] el0_svc+0x78/0x1d0 [ 81.688190][ T5602] el0t_64_sync_handler+0xcc/0xe4 [ 81.689070][ T5602] el0t_64_sync+0x1a0/0x1a4 [ 81.692085][ T5602] ------------[ cut here ]------------ [ 81.693090][ T5602] WARNING: CPU: 0 PID: 5602 at fs/btrfs/inode.c:4182 __btrfs_unlink_inode+0x904/0xaec [ 81.694491][ T5602] Modules linked in: [ 81.695109][ T5602] CPU: 0 PID: 5602 Comm: syz.0.46 Tainted: G W syzkaller #0 [ 81.696459][ T5602] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/18/2026 [ 81.698241][ T5602] pstate: 62400005 (nZCv daif +PAN -UAO +TCO -DIT -SSBS BTYPE=--) [ 81.699589][ T5602] pc : __btrfs_unlink_inode+0x904/0xaec [ 81.700570][ T5602] lr : __btrfs_unlink_inode+0x904/0xaec [ 81.701516][ T5602] sp : ffff800022647a60 [ 81.702273][ T5602] x29: ffff800022647b10 x28: ffff0000ce88c000 x27: ffff0000ec999810 [ 81.703690][ T5602] x26: 0000000000000100 x25: 00000000fffffff4 x24: ffff0000e8544c60 [ 81.705050][ T5602] x23: ffff7000044c8f54 x22: dfff800000000000 x21: ffff0000e25744b0 [ 81.706527][ T5602] x20: ffff0000de733d68 x19: 1fffe0001bce67ad x18: 0000000000000001 [ 81.707901][ T5602] x17: 0000000000000000 x16: ffff80001125f448 x15: 00000000ffffffff [ 81.709334][ T5602] x14: 0000000000000001 x13: 1fffe000341f05ab x12: 0000000000ff0100 [ 81.710761][ T5602] x11: 0000000000000000 x10: 0000000000000000 x9 : a6e2336a503ee500 [ 81.712108][ T5602] x8 : a6e2336a503ee500 x7 : 0000000000000001 x6 : 0000000000000001 [ 81.713622][ T5602] x5 : ffff800022647378 x4 : ffff80001437f3e0 x3 : ffff800008509220 [ 81.715006][ T5602] x2 : 0000000000000001 x1 : 0000000100000000 x0 : 0000000000000026 [ 81.716274][ T5602] Call trace: [ 81.716826][ T5602] __btrfs_unlink_inode+0x904/0xaec [ 81.717693][ T5602] btrfs_unlink+0x108/0x258 [ 81.718549][ T5602] vfs_unlink+0x2e0/0x4f4 [ 81.719253][ T5602] do_unlinkat+0x328/0x618 [ 81.719941][ T5602] __arm64_sys_unlinkat+0xe0/0xfc [ 81.720840][ T5602] invoke_syscall+0x98/0x2b0 [ 81.721569][ T5602] el0_svc_common+0x138/0x258 [ 81.722369][ T5602] do_el0_svc+0x58/0x13c [ 81.723116][ T5602] el0_svc+0x78/0x1d0 [ 81.723837][ T5602] el0t_64_sync_handler+0xcc/0xe4 [ 81.724686][ T5602] el0t_64_sync+0x1a0/0x1a4 [ 81.725478][ T5602] irq event stamp: 79500 [ 81.726251][ T5602] hardirqs last enabled at (79499): [] __up_console_sem+0xb4/0xfc [ 81.727820][ T5602] hardirqs last disabled at (79500): [] el1_dbg+0x24/0x80 [ 81.729335][ T5602] softirqs last enabled at (79480): [] handle_softirqs+0xa40/0xbe4 [ 81.731008][ T5602] softirqs last disabled at (79457): [] __irq_exit_rcu+0x240/0x43c [ 81.732601][ T5602] ---[ end trace 98697d1551805daf ]--- [ 81.735997][ T5602] BTRFS: error (device loop0) in __btrfs_unlink_inode:4182: errno=-12 Out of memory [ 81.737572][ T5602] BTRFS info (device loop0): forced readonly [ 81.950895][ T5624] BTRFS: device fsid c9fe44da-de57-406a-8241-57ec7d4412cf devid 1 transid 8 /dev/loop0 scanned by syz.0.47 (5624) [ 81.954574][ T5624] BTRFS info (device loop0): using crc32c (crc32c-generic) checksum algorithm [ 81.956129][ T5624] BTRFS info (device loop0): using free space tree [ 81.957619][ T5624] BTRFS info (device loop0): has skinny extents [ 81.977397][ T5624] BTRFS info (device loop0): enabling ssd optimizations [ 81.981493][ T5624] FAULT_INJECTION: forcing a failure. [ 81.981493][ T5624] name failslab, interval 1, probability 0, space 0, times 0 [ 81.983690][ T5624] CPU: 0 PID: 5624 Comm: syz.0.47 Tainted: G W syzkaller #0 [ 81.985238][ T5624] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/18/2026 [ 81.986903][ T5624] Call trace: [ 81.987451][ T5624] dump_backtrace+0x0/0x458 [ 81.988231][ T5624] show_stack+0x2c/0x3c [ 81.988968][ T5624] __dump_stack+0x30/0x40 [ 81.989758][ T5624] dump_stack_lvl+0xf4/0x15c [ 81.990555][ T5624] dump_stack+0x1c/0x5c [ 81.991280][ T5624] should_fail+0x3bc/0x514 [ 81.992057][ T5624] __should_failslab+0xbc/0x10c [ 81.992832][ T5624] should_failslab+0x10/0x28 [ 81.993624][ T5624] slab_pre_alloc_hook+0x64/0xe8 [ 81.994468][ T5624] kmem_cache_alloc_trace+0x98/0x3ec [ 81.995314][ T5624] btrfs_delete_delayed_dir_index+0x22c/0x56c [ 81.996428][ T5624] __btrfs_unlink_inode+0x350/0xaec [ 81.997330][ T5624] btrfs_unlink+0x108/0x258 [ 81.998118][ T5624] vfs_unlink+0x2e0/0x4f4 [ 81.998884][ T5624] do_unlinkat+0x328/0x618 [ 81.999664][ T5624] __arm64_sys_unlinkat+0xe0/0xfc [ 82.000545][ T5624] invoke_syscall+0x98/0x2b0 [ 82.001339][ T5624] el0_svc_common+0x138/0x258 [ 82.002138][ T5624] do_el0_svc+0x58/0x13c [ 82.002906][ T5624] el0_svc+0x78/0x1d0 [ 82.003549][ T5624] el0t_64_sync_handler+0xcc/0xe4 [ 82.004464][ T5624] el0t_64_sync+0x1a0/0x1a4 [ 82.006425][ T5624] ------------[ cut here ]------------ [ 82.008046][ T5624] WARNING: CPU: 0 PID: 5624 at fs/btrfs/inode.c:4182 __btrfs_unlink_inode+0x904/0xaec [ 82.009515][ T5624] Modules linked in: [ 82.010132][ T5624] CPU: 0 PID: 5624 Comm: syz.0.47 Tainted: G W syzkaller #0 [ 82.011550][ T5624] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/18/2026 [ 82.013119][ T5624] pstate: 62400005 (nZCv daif +PAN -UAO +TCO -DIT -SSBS BTYPE=--) [ 82.014368][ T5624] pc : __btrfs_unlink_inode+0x904/0xaec [ 82.015324][ T5624] lr : __btrfs_unlink_inode+0x904/0xaec [ 82.016225][ T5624] sp : ffff800022e17a60 [ 82.016895][ T5624] x29: ffff800022e17b10 x28: ffff0000d0c00000 x27: ffff0000ec999c10 [ 82.018145][ T5624] x26: 0000000000000100 x25: 00000000fffffff4 x24: ffff0000d1ff8dc0 [ 82.019527][ T5624] x23: ffff7000045c2f54 x22: dfff800000000000 x21: ffff0000e25713a0 [ 82.020954][ T5624] x20: ffff0000de733ec8 x19: 1fffe0001bce67d9 x18: 0000000000000001 [ 82.022242][ T5624] x17: 0000000000000000 x16: ffff80001125f448 x15: 00000000ffffffff [ 82.023651][ T5624] x14: 0000000000000001 x13: 1fffe000341f05ab x12: 0000000000ff0100 [ 82.025089][ T5624] x11: 0000000000000000 x10: 0000000000000000 x9 : c712ec5cd4a02200 [ 82.026386][ T5624] x8 : c712ec5cd4a02200 x7 : 0000000000000001 x6 : 0000000000000001 [ 82.027756][ T5624] x5 : ffff800022e17378 x4 : ffff80001437f3e0 x3 : ffff800008509220 [ 82.029168][ T5624] x2 : 0000000000000001 x1 : 0000000100000000 x0 : 0000000000000026 [ 82.030540][ T5624] Call trace: [ 82.031106][ T5624] __btrfs_unlink_inode+0x904/0xaec [ 82.032020][ T5624] btrfs_unlink+0x108/0x258 [ 82.032790][ T5624] vfs_unlink+0x2e0/0x4f4 [ 82.033507][ T5624] do_unlinkat+0x328/0x618 [ 82.034260][ T5624] __arm64_sys_unlinkat+0xe0/0xfc [ 82.035129][ T5624] invoke_syscall+0x98/0x2b0 [ 82.035875][ T5624] el0_svc_common+0x138/0x258 [ 82.036617][ T5624] do_el0_svc+0x58/0x13c [ 82.037305][ T5624] el0_svc+0x78/0x1d0 [ 82.038001][ T5624] el0t_64_sync_handler+0xcc/0xe4 [ 82.038851][ T5624] el0t_64_sync+0x1a0/0x1a4 [ 82.039668][ T5624] irq event stamp: 79882 [ 82.040415][ T5624] hardirqs last enabled at (79881): [] __up_console_sem+0xb4/0xfc [ 82.042013][ T5624] hardirqs last disabled at (79882): [] el1_dbg+0x24/0x80 [ 82.043434][ T5624] softirqs last enabled at (79856): [] handle_softirqs+0xa40/0xbe4 [ 82.044987][ T5624] softirqs last disabled at (79749): [] __irq_exit_rcu+0x240/0x43c [ 82.046498][ T5624] ---[ end trace 98697d1551805db0 ]--- [ 82.050536][ T5624] BTRFS: error (device loop0) in __btrfs_unlink_inode:4182: errno=-12 Out of memory [ 82.052022][ T5624] BTRFS info (device loop0): forced readonly 1970/01/01 00:01:22 executed programs: 35