[ 51.080231][ T928] device hsr_slave_0 left promiscuous mode [ 51.114727][ T928] device hsr_slave_1 left promiscuous mode [ 51.224494][ T928] batman_adv: batadv0: Interface deactivated: batadv_slave_0 [ 51.225724][ T928] batman_adv: batadv0: Removing interface: batadv_slave_0 [ 51.227679][ T928] batman_adv: batadv0: Interface deactivated: batadv_slave_1 [ 51.228910][ T928] batman_adv: batadv0: Removing interface: batadv_slave_1 [ 51.230331][ T928] device bridge_slave_1 left promiscuous mode [ 51.231646][ T928] bridge0: port 2(bridge_slave_1) entered disabled state [ 51.265753][ T928] device bridge_slave_0 left promiscuous mode [ 51.266846][ T928] bridge0: port 1(bridge_slave_0) entered disabled state [ 51.434634][ T928] device veth1_macvtap left promiscuous mode [ 51.435758][ T928] device veth0_macvtap left promiscuous mode [ 51.436760][ T928] device veth1_vlan left promiscuous mode [ 51.437779][ T928] device veth0_vlan left promiscuous mode [ 51.528828][ T928] team0 (unregistering): Port device team_slave_1 removed [ 51.533077][ T928] team0 (unregistering): Port device team_slave_0 removed [ 51.537343][ T928] bond0 (unregistering): (slave bond_slave_1): Releasing backup interface [ 51.569136][ T928] bond0 (unregistering): (slave bond_slave_0): Releasing backup interface [ 51.667679][ T928] bond0 (unregistering): Released all slaves [ 54.278066][ T928] netdevsim netdevsim0 netdevsim3 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 54.317434][ T928] netdevsim netdevsim0 netdevsim2 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 54.367589][ T928] netdevsim netdevsim0 netdevsim1 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 54.419570][ T928] netdevsim netdevsim0 netdevsim0 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 Warning: Permanently added '10.128.1.167' (ED25519) to the list of known hosts. [ 55.830814][ T928] device hsr_slave_0 left promiscuous mode [ 55.865294][ T928] device hsr_slave_1 left promiscuous mode 1970/01/01 00:00:55 ignoring optional flag "type"="gce" [ 55.964633][ T928] batman_adv: batadv0: Interface deactivated: batadv_slave_0 [ 55.965911][ T928] batman_adv: batadv0: Removing interface: batadv_slave_0 [ 55.967465][ T928] batman_adv: batadv0: Interface deactivated: batadv_slave_1 [ 55.968668][ T928] batman_adv: batadv0: Removing interface: batadv_slave_1 [ 55.970078][ T928] device bridge_slave_1 left promiscuous mode [ 55.971109][ T928] bridge0: port 2(bridge_slave_1) entered disabled state [ 56.015023][ T928] device bridge_slave_0 left promiscuous mode [ 56.016570][ T928] bridge0: port 1(bridge_slave_0) entered disabled state 1970/01/01 00:00:56 parsed 1 programs [ 56.164547][ T928] device veth1_macvtap left promiscuous mode [ 56.165508][ T928] device veth0_macvtap left promiscuous mode [ 56.166584][ T928] device veth1_vlan left promiscuous mode [ 56.167560][ T928] device veth0_vlan left promiscuous mode [ 56.254223][ T928] team0 (unregistering): Port device team_slave_1 removed [ 56.260322][ T928] team0 (unregistering): Port device team_slave_0 removed [ 56.264114][ T928] bond0 (unregistering): (slave bond_slave_1): Releasing backup interface [ 56.327809][ T928] bond0 (unregistering): (slave bond_slave_0): Releasing backup interface [ 56.428056][ T928] bond0 (unregistering): Released all slaves [ 57.356430][ T4404] Adding 124996k swap on ./swap-file. Priority:0 extents:1 across:124996k SSFS [ 58.338897][ T4419] chnl_net:caif_netlink_parms(): no params data found [ 58.356477][ T4419] bridge0: port 1(bridge_slave_0) entered blocking state [ 58.357657][ T4419] bridge0: port 1(bridge_slave_0) entered disabled state [ 58.359177][ T4419] device bridge_slave_0 entered promiscuous mode [ 58.361079][ T4419] bridge0: port 2(bridge_slave_1) entered blocking state [ 58.362146][ T4419] bridge0: port 2(bridge_slave_1) entered disabled state [ 58.363524][ T4419] device bridge_slave_1 entered promiscuous mode [ 58.371580][ T4419] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 58.374067][ T4419] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 58.383427][ T4419] team0: Port device team_slave_0 added [ 58.385343][ T4419] team0: Port device team_slave_1 added [ 58.391734][ T4419] batman_adv: batadv0: Adding interface: batadv_slave_0 [ 58.392829][ T4419] 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. [ 58.397261][ T4419] batman_adv: batadv0: Not using interface batadv_slave_0 (retrying later): interface not active [ 58.399594][ T4419] batman_adv: batadv0: Adding interface: batadv_slave_1 [ 58.400808][ T4419] 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. [ 58.404899][ T4419] batman_adv: batadv0: Not using interface batadv_slave_1 (retrying later): interface not active [ 58.455538][ T4419] device hsr_slave_0 entered promiscuous mode [ 58.504663][ T4419] device hsr_slave_1 entered promiscuous mode [ 59.038344][ T4419] netdevsim netdevsim0 netdevsim0: renamed from eth0 [ 59.086038][ T4419] netdevsim netdevsim0 netdevsim1: renamed from eth1 [ 59.116705][ T4419] netdevsim netdevsim0 netdevsim2: renamed from eth2 [ 59.155716][ T4419] netdevsim netdevsim0 netdevsim3: renamed from eth3 [ 59.210023][ T4419] bridge0: port 2(bridge_slave_1) entered blocking state [ 59.211162][ T4419] bridge0: port 2(bridge_slave_1) entered forwarding state [ 59.212263][ T4419] bridge0: port 1(bridge_slave_0) entered blocking state [ 59.213427][ T4419] bridge0: port 1(bridge_slave_0) entered forwarding state [ 59.232418][ T4419] 8021q: adding VLAN 0 to HW filter on device bond0 [ 59.236710][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 59.238494][ T9] bridge0: port 1(bridge_slave_0) entered disabled state [ 59.239947][ T9] bridge0: port 2(bridge_slave_1) entered disabled state [ 59.245163][ T4419] 8021q: adding VLAN 0 to HW filter on device team0 [ 59.256996][ T148] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 59.258837][ T148] bridge0: port 1(bridge_slave_0) entered blocking state [ 59.260069][ T148] bridge0: port 1(bridge_slave_0) entered forwarding state [ 59.261472][ T148] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 59.262987][ T148] bridge0: port 2(bridge_slave_1) entered blocking state [ 59.264206][ T148] bridge0: port 2(bridge_slave_1) entered forwarding state [ 59.268241][ T148] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 59.270016][ T148] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 59.276508][ T148] IPv6: ADDRCONF(NETDEV_CHANGE): team0: link becomes ready [ 59.282979][ T148] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 59.285070][ T148] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 59.287747][ T4419] IPv6: ADDRCONF(NETDEV_CHANGE): hsr0: link becomes ready [ 59.390883][ T4419] 8021q: adding VLAN 0 to HW filter on device batadv0 [ 59.403541][ T148] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan1: link becomes ready [ 59.405293][ T148] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan0: link becomes ready [ 59.409772][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_virt_wifi: link becomes ready [ 59.411356][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_virt_wifi: link becomes ready [ 59.417906][ T148] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_vlan: link becomes ready [ 59.419416][ T148] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_vlan: link becomes ready [ 59.420892][ T148] IPv6: ADDRCONF(NETDEV_CHANGE): vlan0: link becomes ready [ 59.422333][ T148] IPv6: ADDRCONF(NETDEV_CHANGE): vlan1: link becomes ready [ 59.426263][ T4419] device veth0_vlan entered promiscuous mode [ 59.430254][ T4419] device veth1_vlan entered promiscuous mode [ 59.440115][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan0: link becomes ready [ 59.441577][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan1: link becomes ready [ 59.443147][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_macvtap: link becomes ready [ 59.446404][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_macvtap: link becomes ready [ 59.449783][ T4419] device veth0_macvtap entered promiscuous mode [ 59.455655][ T4419] device veth1_macvtap entered promiscuous mode [ 59.468705][ T4419] batman_adv: batadv0: Interface activated: batadv_slave_0 [ 59.470036][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): macvtap0: link becomes ready [ 59.471460][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): macsec0: link becomes ready [ 59.472883][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_0: link becomes ready [ 59.474944][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_batadv: link becomes ready [ 59.478086][ T4419] batman_adv: batadv0: Interface activated: batadv_slave_1 [ 59.481503][ T4419] netdevsim netdevsim0 netdevsim0: set [1, 0] type 2 family 0 port 6081 - 0 [ 59.482905][ T4419] netdevsim netdevsim0 netdevsim1: set [1, 0] type 2 family 0 port 6081 - 0 [ 59.484252][ T4419] netdevsim netdevsim0 netdevsim2: set [1, 0] type 2 family 0 port 6081 - 0 [ 59.486147][ T4419] netdevsim netdevsim0 netdevsim3: set [1, 0] type 2 family 0 port 6081 - 0 [ 59.488634][ T136] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_1: link becomes ready [ 59.490226][ T136] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_batadv: link becomes ready [ 59.803709][ T136] wlan0: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 59.807275][ T136] wlan0: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 59.809004][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): wlan0: link becomes ready [ 59.823976][ T136] wlan1: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 59.825793][ T136] wlan1: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 59.827717][ T136] IPv6: ADDRCONF(NETDEV_CHANGE): wlan1: link becomes ready [ 60.289276][ T928] netdevsim netdevsim0 netdevsim3 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 62.817143][ T928] netdevsim netdevsim0 netdevsim2 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 65.618511][ T928] netdevsim netdevsim0 netdevsim1 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 65.657920][ T928] netdevsim netdevsim0 netdevsim0 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 1970/01/01 00:01:05 executed programs: 0 [ 65.990175][ T4741] chnl_net:caif_netlink_parms(): no params data found [ 66.009086][ T4741] bridge0: port 1(bridge_slave_0) entered blocking state [ 66.010467][ T4741] bridge0: port 1(bridge_slave_0) entered disabled state [ 66.012054][ T4741] device bridge_slave_0 entered promiscuous mode [ 66.014752][ T4741] bridge0: port 2(bridge_slave_1) entered blocking state [ 66.015995][ T4741] bridge0: port 2(bridge_slave_1) entered disabled state [ 66.017501][ T4741] device bridge_slave_1 entered promiscuous mode [ 66.025724][ T4741] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 66.028294][ T4741] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 66.037176][ T4741] team0: Port device team_slave_0 added [ 66.039077][ T4741] team0: Port device team_slave_1 added [ 66.045619][ T4741] batman_adv: batadv0: Adding interface: batadv_slave_0 [ 66.046763][ T4741] 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. [ 66.050922][ T4741] batman_adv: batadv0: Not using interface batadv_slave_0 (retrying later): interface not active [ 66.053389][ T4741] batman_adv: batadv0: Adding interface: batadv_slave_1 [ 66.054562][ T4741] 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. [ 66.058777][ T4741] batman_adv: batadv0: Not using interface batadv_slave_1 (retrying later): interface not active [ 66.095700][ T4741] device hsr_slave_0 entered promiscuous mode [ 66.144605][ T4741] device hsr_slave_1 entered promiscuous mode [ 66.184434][ T4741] debugfs: Directory 'hsr0' with parent 'hsr' already present! [ 66.185753][ T4741] Cannot create hsr debugfs directory [ 66.592336][ T4741] netdevsim netdevsim0 netdevsim0: renamed from eth0 [ 66.615978][ T4741] netdevsim netdevsim0 netdevsim1: renamed from eth1 [ 66.665683][ T4741] netdevsim netdevsim0 netdevsim2: renamed from eth2 [ 66.705563][ T4741] netdevsim netdevsim0 netdevsim3: renamed from eth3 [ 66.760632][ T4741] bridge0: port 2(bridge_slave_1) entered blocking state [ 66.762000][ T4741] bridge0: port 2(bridge_slave_1) entered forwarding state [ 66.763370][ T4741] bridge0: port 1(bridge_slave_0) entered blocking state [ 66.764649][ T4741] bridge0: port 1(bridge_slave_0) entered forwarding state [ 66.784208][ T4741] 8021q: adding VLAN 0 to HW filter on device bond0 [ 66.788283][ T136] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 66.790411][ T136] bridge0: port 1(bridge_slave_0) entered disabled state [ 66.792062][ T136] bridge0: port 2(bridge_slave_1) entered disabled state [ 66.794220][ T136] IPv6: ADDRCONF(NETDEV_CHANGE): bond0: link becomes ready [ 66.799401][ T4741] 8021q: adding VLAN 0 to HW filter on device team0 [ 66.804580][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 66.806216][ T9] bridge0: port 1(bridge_slave_0) entered blocking state [ 66.807375][ T9] bridge0: port 1(bridge_slave_0) entered forwarding state [ 66.808729][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 66.810162][ T9] bridge0: port 2(bridge_slave_1) entered blocking state [ 66.811367][ T9] bridge0: port 2(bridge_slave_1) entered forwarding state [ 66.822729][ T4741] hsr0: Slave A (hsr_slave_0) is not up; please bring it up to get a fully working HSR network [ 66.826823][ T4741] hsr0: Slave B (hsr_slave_1) is not up; please bring it up to get a fully working HSR network [ 66.831284][ T148] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 66.833233][ T148] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 66.835492][ T148] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 66.837367][ T148] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 66.841045][ T148] IPv6: ADDRCONF(NETDEV_CHANGE): hsr0: link becomes ready [ 66.842485][ T148] IPv6: ADDRCONF(NETDEV_CHANGE): team0: link becomes ready [ 66.887102][ T4741] 8021q: adding VLAN 0 to HW filter on device batadv0 [ 66.888874][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan0: link becomes ready [ 66.890169][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan1: link becomes ready [ 66.897555][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_virt_wifi: link becomes ready [ 66.906657][ T148] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_vlan: link becomes ready [ 66.908174][ T148] IPv6: ADDRCONF(NETDEV_CHANGE): vlan0: link becomes ready [ 66.909712][ T148] IPv6: ADDRCONF(NETDEV_CHANGE): vlan1: link becomes ready [ 66.912404][ T4741] device veth0_vlan entered promiscuous mode [ 66.917799][ T4741] device veth1_vlan entered promiscuous mode [ 66.927783][ T136] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan0: link becomes ready [ 66.929397][ T136] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan1: link becomes ready [ 66.931036][ T136] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_macvtap: link becomes ready [ 66.934048][ T4741] device veth0_macvtap entered promiscuous mode [ 66.937721][ T4741] device veth1_macvtap entered promiscuous mode [ 66.943091][ T4741] batman_adv: The newly added mac address (aa:aa:aa:aa:aa:3e) already exists on: batadv_slave_0 [ 66.946564][ T4741] batman_adv: It is strongly recommended to keep mac addresses unique to avoid problems! [ 66.949197][ T4741] batman_adv: batadv0: Interface activated: batadv_slave_0 [ 66.950500][ T136] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_batadv: link becomes ready [ 66.952477][ T136] IPv6: ADDRCONF(NETDEV_CHANGE): macvtap0: link becomes ready [ 66.956237][ T4741] batman_adv: The newly added mac address (aa:aa:aa:aa:aa:3f) already exists on: batadv_slave_1 [ 66.958059][ T4741] batman_adv: It is strongly recommended to keep mac addresses unique to avoid problems! [ 66.960344][ T4741] batman_adv: batadv0: Interface activated: batadv_slave_1 [ 66.961748][ T136] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_batadv: link becomes ready [ 66.967019][ T4741] netdevsim netdevsim0 netdevsim0: set [1, 0] type 2 family 0 port 6081 - 0 [ 66.968524][ T4741] netdevsim netdevsim0 netdevsim1: set [1, 0] type 2 family 0 port 6081 - 0 [ 66.969917][ T4741] netdevsim netdevsim0 netdevsim2: set [1, 0] type 2 family 0 port 6081 - 0 [ 66.971264][ T4741] netdevsim netdevsim0 netdevsim3: set [1, 0] type 2 family 0 port 6081 - 0 [ 67.009258][ T136] wlan0: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 67.010688][ T136] wlan0: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 67.012087][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): wlan0: link becomes ready [ 67.033552][ T136] wlan1: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 67.035113][ T136] wlan1: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 67.036624][ T148] IPv6: ADDRCONF(NETDEV_CHANGE): wlan1: link becomes ready [ 67.145718][ T4850] loop0: detected capacity change from 0 to 32768 [ 67.196638][ T4850] BTRFS: device fsid c9fe44da-de57-406a-8241-57ec7d4412cf devid 1 transid 8 /dev/loop0 scanned by syz.0.15 (4850) [ 67.207256][ T4850] BTRFS info (device loop0): using crc32c (crc32c-generic) checksum algorithm [ 67.208848][ T4850] BTRFS info (device loop0): using free space tree [ 67.209895][ T4850] BTRFS info (device loop0): has skinny extents [ 67.219638][ T4850] BTRFS info (device loop0): enabling ssd optimizations [ 67.228360][ T4850] FAULT_INJECTION: forcing a failure. [ 67.228360][ T4850] name failslab, interval 1, probability 0, space 0, times 1 [ 67.230548][ T4850] CPU: 0 PID: 4850 Comm: syz.0.15 Not tainted syzkaller #0 [ 67.231823][ T4850] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/02/2026 [ 67.233488][ T4850] Call trace: [ 67.234047][ T4850] dump_backtrace+0x0/0x458 [ 67.234845][ T4850] show_stack+0x2c/0x3c [ 67.235539][ T4850] __dump_stack+0x30/0x40 [ 67.236289][ T4850] dump_stack_lvl+0xf4/0x15c [ 67.237165][ T4850] dump_stack+0x1c/0x5c [ 67.237845][ T4850] should_fail+0x3c8/0x520 [ 67.238608][ T4850] __should_failslab+0xbc/0x10c [ 67.239443][ T4850] should_failslab+0x10/0x28 [ 67.240237][ T4850] slab_pre_alloc_hook+0x64/0xe8 [ 67.241150][ T4850] kmem_cache_alloc_trace+0x98/0x3f0 [ 67.242144][ T4850] btrfs_delete_delayed_dir_index+0x22c/0x574 [ 67.243199][ T4850] __btrfs_unlink_inode+0x34c/0xab8 [ 67.244183][ T4850] btrfs_unlink+0x10c/0x25c [ 67.244946][ T4850] vfs_unlink+0x2e0/0x4f4 [ 67.245669][ T4850] do_unlinkat+0x318/0x624 [ 67.246455][ T4850] __arm64_sys_unlinkat+0xe0/0xfc [ 67.247313][ T4850] invoke_syscall+0x98/0x28c [ 67.248133][ T4850] el0_svc_common+0x13c/0x258 [ 67.248907][ T4850] do_el0_svc+0x5c/0x140 [ 67.249620][ T4850] el0_svc+0x78/0x1d0 [ 67.250274][ T4850] el0t_64_sync_handler+0xcc/0xe4 [ 67.251134][ T4850] el0t_64_sync+0x1a0/0x1a4 [ 67.254188][ T4850] ------------[ cut here ]------------ [ 67.255317][ T4850] WARNING: CPU: 0 PID: 4850 at fs/btrfs/inode.c:4182 __btrfs_unlink_inode+0x8d8/0xab8 [ 67.256962][ T4850] Modules linked in: [ 67.257606][ T4850] CPU: 0 PID: 4850 Comm: syz.0.15 Not tainted syzkaller #0 [ 67.258854][ T4850] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/02/2026 [ 67.260631][ T4850] pstate: 62400005 (nZCv daif +PAN -UAO +TCO -DIT -SSBS BTYPE=--) [ 67.261811][ T4850] pc : __btrfs_unlink_inode+0x8d8/0xab8 [ 67.262722][ T4850] lr : __btrfs_unlink_inode+0x8d8/0xab8 [ 67.263657][ T4850] sp : ffff800020087a80 [ 67.264428][ T4850] x29: ffff800020087b10 x28: 0000000000000104 x27: ffff0000ecdfc010 [ 67.265972][ T4850] x26: 0000000000000100 x25: 00000000fffffff4 x24: ffff0000c1f7abb0 [ 67.267467][ T4850] x23: ffff0000deb660b0 x22: ffff0000ed586000 x21: 1fffe0001bd6cc21 [ 67.269022][ T4850] x20: ffff0000deb66108 x19: dfff800000000000 x18: 0000000000000000 [ 67.270669][ T4850] x17: 0000000000000000 x16: ffff80001134e478 x15: 0000000000000000 [ 67.272292][ T4850] x14: 0000000000000001 x13: 1fffe000341cebab x12: 0000000000000000 [ 67.273746][ T4850] x11: ff8080000830061c x10: 0000000000000000 x9 : 37413a894cfd8e00 [ 67.275170][ T4850] x8 : 37413a894cfd8e00 x7 : 0000000000000001 x6 : 0000000000000001 [ 67.276554][ T4850] x5 : ffff800020087398 x4 : ffff80001446f500 x3 : ffff80000850f688 [ 67.277964][ T4850] x2 : 0000000000000001 x1 : 0000000100000000 x0 : 0000000000000026 [ 67.279390][ T4850] Call trace: [ 67.279979][ T4850] __btrfs_unlink_inode+0x8d8/0xab8 [ 67.280922][ T4850] btrfs_unlink+0x10c/0x25c [ 67.281733][ T4850] vfs_unlink+0x2e0/0x4f4 [ 67.282466][ T4850] do_unlinkat+0x318/0x624 [ 67.283264][ T4850] __arm64_sys_unlinkat+0xe0/0xfc [ 67.284158][ T4850] invoke_syscall+0x98/0x28c [ 67.285045][ T4850] el0_svc_common+0x13c/0x258 [ 67.285934][ T4850] do_el0_svc+0x5c/0x140 [ 67.286733][ T4850] el0_svc+0x78/0x1d0 [ 67.287487][ T4850] el0t_64_sync_handler+0xcc/0xe4 [ 67.288403][ T4850] el0t_64_sync+0x1a0/0x1a4 [ 67.289215][ T4850] irq event stamp: 80460 [ 67.289957][ T4850] hardirqs last enabled at (80459): [] __up_console_sem+0xb4/0xfc [ 67.291577][ T4850] hardirqs last disabled at (80460): [] el1_dbg+0x24/0x80 [ 67.293106][ T4850] softirqs last enabled at (80448): [] handle_softirqs+0xa70/0xc14 [ 67.294750][ T4850] softirqs last disabled at (80441): [] __irq_exit_rcu+0x240/0x434 [ 67.296378][ T4850] ---[ end trace 149d0c2dff8b1a7a ]--- [ 67.299608][ T4850] BTRFS: error (device loop0) in __btrfs_unlink_inode:4182: errno=-12 Out of memory [ 67.301148][ T4850] BTRFS info (device loop0): forced readonly [ 67.454325][ T4875] loop0: detected capacity change from 0 to 32768 [ 67.547328][ T4875] BTRFS: device fsid c9fe44da-de57-406a-8241-57ec7d4412cf devid 1 transid 8 /dev/loop0 scanned by syz.0.16 (4875) [ 67.550797][ T4875] BTRFS info (device loop0): using crc32c (crc32c-generic) checksum algorithm [ 67.552215][ T4875] BTRFS info (device loop0): using free space tree [ 67.553172][ T4875] BTRFS info (device loop0): has skinny extents [ 67.569866][ T4875] BTRFS info (device loop0): enabling ssd optimizations [ 67.575006][ T4875] FAULT_INJECTION: forcing a failure. [ 67.575006][ T4875] name failslab, interval 1, probability 0, space 0, times 0 [ 67.576954][ T4875] CPU: 0 PID: 4875 Comm: syz.0.16 Tainted: G W syzkaller #0 [ 67.578519][ T4875] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/02/2026 [ 67.580195][ T4875] Call trace: [ 67.580677][ T4875] dump_backtrace+0x0/0x458 [ 67.581369][ T4875] show_stack+0x2c/0x3c [ 67.582061][ T4875] __dump_stack+0x30/0x40 [ 67.582751][ T4875] dump_stack_lvl+0xf4/0x15c [ 67.583438][ T4875] dump_stack+0x1c/0x5c [ 67.584088][ T4875] should_fail+0x3c8/0x520 [ 67.584796][ T4875] __should_failslab+0xbc/0x10c [ 67.585794][ T4875] should_failslab+0x10/0x28 [ 67.586661][ T4875] slab_pre_alloc_hook+0x64/0xe8 [ 67.587488][ T4875] kmem_cache_alloc+0x94/0x3d8 [ 67.588270][ T4875] btrfs_alloc_path+0x5c/0x68 [ 67.589033][ T4875] __btrfs_unlink_inode+0x1e0/0xab8 [ 67.589899][ T4875] btrfs_unlink+0x10c/0x25c [ 67.590602][ T4875] vfs_unlink+0x2e0/0x4f4 [ 67.591266][ T4875] do_unlinkat+0x318/0x624 [ 67.591985][ T4875] __arm64_sys_unlinkat+0xe0/0xfc [ 67.592794][ T4875] invoke_syscall+0x98/0x28c [ 67.593528][ T4875] el0_svc_common+0x13c/0x258 [ 67.594271][ T4875] do_el0_svc+0x5c/0x140 [ 67.594964][ T4875] el0_svc+0x78/0x1d0 [ 67.595632][ T4875] el0t_64_sync_handler+0xcc/0xe4 [ 67.596499][ T4875] el0t_64_sync+0x1a0/0x1a4 [ 67.761535][ T4897] loop0: detected capacity change from 0 to 32768 [ 67.814908][ T4897] BTRFS: device fsid c9fe44da-de57-406a-8241-57ec7d4412cf devid 1 transid 8 /dev/loop0 scanned by syz.0.17 (4897) [ 67.818764][ T4897] BTRFS info (device loop0): using crc32c (crc32c-generic) checksum algorithm [ 67.820183][ T4897] BTRFS info (device loop0): using free space tree [ 67.821151][ T4897] BTRFS info (device loop0): has skinny extents [ 67.839052][ T4897] BTRFS info (device loop0): enabling ssd optimizations [ 67.846445][ T4897] FAULT_INJECTION: forcing a failure. [ 67.846445][ T4897] name failslab, interval 1, probability 0, space 0, times 0 [ 67.848498][ T4897] CPU: 0 PID: 4897 Comm: syz.0.17 Tainted: G W syzkaller #0 [ 67.849823][ T4897] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/02/2026 [ 67.851384][ T4897] Call trace: [ 67.851889][ T4897] dump_backtrace+0x0/0x458 [ 67.852609][ T4897] show_stack+0x2c/0x3c [ 67.853352][ T4897] __dump_stack+0x30/0x40 [ 67.854091][ T4897] dump_stack_lvl+0xf4/0x15c [ 67.854945][ T4897] dump_stack+0x1c/0x5c [ 67.855676][ T4897] should_fail+0x3c8/0x520 [ 67.856408][ T4897] __should_failslab+0xbc/0x10c [ 67.857211][ T4897] should_failslab+0x10/0x28 [ 67.858040][ T4897] slab_pre_alloc_hook+0x64/0xe8 [ 67.858956][ T4897] kmem_cache_alloc_trace+0x98/0x3f0 [ 67.859895][ T4897] btrfs_delete_delayed_dir_index+0x22c/0x574 [ 67.861013][ T4897] __btrfs_unlink_inode+0x34c/0xab8 [ 67.861880][ T4897] btrfs_unlink+0x10c/0x25c [ 67.862623][ T4897] vfs_unlink+0x2e0/0x4f4 [ 67.863363][ T4897] do_unlinkat+0x318/0x624 [ 67.864073][ T4897] __arm64_sys_unlinkat+0xe0/0xfc [ 67.864991][ T4897] invoke_syscall+0x98/0x28c [ 67.865751][ T4897] el0_svc_common+0x13c/0x258 [ 67.866554][ T4897] do_el0_svc+0x5c/0x140 [ 67.867309][ T4897] el0_svc+0x78/0x1d0 [ 67.868056][ T4897] el0t_64_sync_handler+0xcc/0xe4 [ 67.868938][ T4897] el0t_64_sync+0x1a0/0x1a4 [ 67.872322][ T4897] ------------[ cut here ]------------ [ 67.873344][ T4897] WARNING: CPU: 0 PID: 4897 at fs/btrfs/inode.c:4182 __btrfs_unlink_inode+0x8d8/0xab8 [ 67.874860][ T4897] Modules linked in: [ 67.875609][ T4897] CPU: 0 PID: 4897 Comm: syz.0.17 Tainted: G W syzkaller #0 [ 67.877173][ T4897] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/02/2026 [ 67.878984][ T4897] pstate: 62400005 (nZCv daif +PAN -UAO +TCO -DIT -SSBS BTYPE=--) [ 67.880343][ T4897] pc : __btrfs_unlink_inode+0x8d8/0xab8 [ 67.881307][ T4897] lr : __btrfs_unlink_inode+0x8d8/0xab8 [ 67.882345][ T4897] sp : ffff8000202f7a80 [ 67.883045][ T4897] x29: ffff8000202f7b10 x28: 0000000000000104 x27: ffff0000ecdfc810 [ 67.884542][ T4897] x26: 0000000000000100 x25: 00000000fffffff4 x24: ffff0000cf3004d0 [ 67.886200][ T4897] x23: ffff0000deb664d0 x22: ffff0000c7756000 x21: 1fffe0001bd6cca5 [ 67.887699][ T4897] x20: ffff0000deb66528 x19: dfff800000000000 x18: 0000000000000000 [ 67.889125][ T4897] x17: 0000000000000000 x16: ffff80001134e478 x15: 0000000000000000 [ 67.890541][ T4897] x14: 0000000000000001 x13: 1fffe000341cebab x12: 0000000000000000 [ 67.891964][ T4897] x11: ff8080000830061c x10: 0000000000000000 x9 : f554621b8a06ec00 [ 67.893423][ T4897] x8 : f554621b8a06ec00 x7 : 0000000000000001 x6 : 0000000000000001 [ 67.894954][ T4897] x5 : ffff8000202f7398 x4 : ffff80001446f500 x3 : ffff80000850f688 [ 67.896371][ T4897] x2 : 0000000000000001 x1 : 0000000100000000 x0 : 0000000000000026 [ 67.897744][ T4897] Call trace: [ 67.898322][ T4897] __btrfs_unlink_inode+0x8d8/0xab8 [ 67.899225][ T4897] btrfs_unlink+0x10c/0x25c [ 67.900028][ T4897] vfs_unlink+0x2e0/0x4f4 [ 67.900764][ T4897] do_unlinkat+0x318/0x624 [ 67.901520][ T4897] __arm64_sys_unlinkat+0xe0/0xfc [ 67.902315][ T4897] invoke_syscall+0x98/0x28c [ 67.903057][ T4897] el0_svc_common+0x13c/0x258 [ 67.903853][ T4897] do_el0_svc+0x5c/0x140 [ 67.904575][ T4897] el0_svc+0x78/0x1d0 [ 67.905267][ T4897] el0t_64_sync_handler+0xcc/0xe4 [ 67.906142][ T4897] el0t_64_sync+0x1a0/0x1a4 [ 67.906863][ T4897] irq event stamp: 79436 [ 67.907592][ T4897] hardirqs last enabled at (79435): [] __up_console_sem+0xb4/0xfc [ 67.909218][ T4897] hardirqs last disabled at (79436): [] el1_dbg+0x24/0x80 [ 67.910703][ T4897] softirqs last enabled at (79416): [] handle_softirqs+0xa70/0xc14 [ 67.912289][ T4897] softirqs last disabled at (79377): [] __irq_exit_rcu+0x240/0x434 [ 67.913812][ T4897] ---[ end trace 149d0c2dff8b1a7b ]--- [ 67.917088][ T4897] BTRFS: error (device loop0) in __btrfs_unlink_inode:4182: errno=-12 Out of memory [ 67.918659][ T4897] BTRFS info (device loop0): forced readonly [ 68.014812][ T4179] Bluetooth: hci0: command 0x0409 tx timeout [ 68.056993][ T4919] loop0: detected capacity change from 0 to 32768 [ 68.095909][ T4919] BTRFS: device fsid c9fe44da-de57-406a-8241-57ec7d4412cf devid 1 transid 8 /dev/loop0 scanned by syz.0.18 (4919) [ 68.099039][ T4919] BTRFS info (device loop0): using crc32c (crc32c-generic) checksum algorithm [ 68.101215][ T4919] BTRFS info (device loop0): using free space tree [ 68.102644][ T4919] BTRFS info (device loop0): has skinny extents [ 68.112679][ T4919] BTRFS info (device loop0): enabling ssd optimizations [ 68.118879][ T4919] FAULT_INJECTION: forcing a failure. [ 68.118879][ T4919] name failslab, interval 1, probability 0, space 0, times 0 [ 68.120957][ T4919] CPU: 0 PID: 4919 Comm: syz.0.18 Tainted: G W syzkaller #0 [ 68.122343][ T4919] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/02/2026 [ 68.123791][ T4919] Call trace: [ 68.124226][ T4919] dump_backtrace+0x0/0x458 [ 68.124989][ T4919] show_stack+0x2c/0x3c [ 68.125654][ T4919] __dump_stack+0x30/0x40 [ 68.126389][ T4919] dump_stack_lvl+0xf4/0x15c [ 68.127138][ T4919] dump_stack+0x1c/0x5c [ 68.127755][ T4919] should_fail+0x3c8/0x520 [ 68.128465][ T4919] __should_failslab+0xbc/0x10c [ 68.129235][ T4919] should_failslab+0x10/0x28 [ 68.129950][ T4919] slab_pre_alloc_hook+0x64/0xe8 [ 68.130791][ T4919] kmem_cache_alloc+0x94/0x3d8 [ 68.131595][ T4919] btrfs_alloc_path+0x5c/0x68 [ 68.132416][ T4919] __btrfs_unlink_inode+0x1e0/0xab8 [ 68.133340][ T4919] btrfs_unlink+0x10c/0x25c [ 68.134119][ T4919] vfs_unlink+0x2e0/0x4f4 [ 68.134972][ T4919] do_unlinkat+0x318/0x624 [ 68.135765][ T4919] __arm64_sys_unlinkat+0xe0/0xfc [ 68.136669][ T4919] invoke_syscall+0x98/0x28c [ 68.137432][ T4919] el0_svc_common+0x13c/0x258 [ 68.138207][ T4919] do_el0_svc+0x5c/0x140 [ 68.138983][ T4919] el0_svc+0x78/0x1d0 [ 68.139714][ T4919] el0t_64_sync_handler+0xcc/0xe4 [ 68.140618][ T4919] el0t_64_sync+0x1a0/0x1a4 [ 68.187647][ T4709] BTRFS: device fsid c9fe44da-de57-406a-8241-57ec7d4412cf devid 1 transid 10 /dev/loop0 scanned by udevd (4709) [ 68.288523][ T4940] loop0: detected capacity change from 0 to 32768 [ 68.347019][ T4940] BTRFS info (device loop0): using crc32c (crc32c-generic) checksum algorithm [ 68.348440][ T4940] BTRFS info (device loop0): using free space tree [ 68.349474][ T4940] BTRFS info (device loop0): has skinny extents [ 68.363607][ T4940] BTRFS info (device loop0): enabling ssd optimizations [ 68.378156][ T4940] FAULT_INJECTION: forcing a failure. [ 68.378156][ T4940] name failslab, interval 1, probability 0, space 0, times 0 [ 68.380176][ T4940] CPU: 1 PID: 4940 Comm: syz.0.19 Tainted: G W syzkaller #0 [ 68.381397][ T4940] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/02/2026 [ 68.383019][ T4940] Call trace: [ 68.383550][ T4940] dump_backtrace+0x0/0x458 [ 68.384298][ T4940] show_stack+0x2c/0x3c [ 68.385025][ T4940] __dump_stack+0x30/0x40 [ 68.385761][ T4940] dump_stack_lvl+0xf4/0x15c [ 68.386508][ T4940] dump_stack+0x1c/0x5c [ 68.387196][ T4940] should_fail+0x3c8/0x520 [ 68.387920][ T4940] __should_failslab+0xbc/0x10c [ 68.388771][ T4940] should_failslab+0x10/0x28 [ 68.389499][ T4940] slab_pre_alloc_hook+0x64/0xe8 [ 68.390289][ T4940] kmem_cache_alloc+0x94/0x3d8 [ 68.391004][ T4940] btrfs_alloc_path+0x5c/0x68 [ 68.391821][ T4940] __btrfs_unlink_inode+0x1e0/0xab8 [ 68.392710][ T4940] btrfs_unlink+0x10c/0x25c [ 68.393458][ T4940] vfs_unlink+0x2e0/0x4f4 [ 68.394169][ T4940] do_unlinkat+0x318/0x624 [ 68.394938][ T4940] __arm64_sys_unlinkat+0xe0/0xfc [ 68.395745][ T4940] invoke_syscall+0x98/0x28c [ 68.396454][ T4940] el0_svc_common+0x13c/0x258 [ 68.397231][ T4940] do_el0_svc+0x5c/0x140 [ 68.397949][ T4940] el0_svc+0x78/0x1d0 [ 68.398593][ T4940] el0t_64_sync_handler+0xcc/0xe4 [ 68.399407][ T4940] el0t_64_sync+0x1a0/0x1a4 [ 68.551460][ T4963] loop0: detected capacity change from 0 to 32768 [ 68.595766][ T4963] BTRFS: device fsid c9fe44da-de57-406a-8241-57ec7d4412cf devid 1 transid 8 /dev/loop0 scanned by syz.0.20 (4963) [ 68.638908][ T4963] BTRFS info (device loop0): using crc32c (crc32c-generic) checksum algorithm [ 68.640290][ T4963] BTRFS info (device loop0): using free space tree [ 68.641259][ T4963] BTRFS info (device loop0): has skinny extents [ 68.650137][ T4963] BTRFS info (device loop0): enabling ssd optimizations [ 68.656564][ T4963] FAULT_INJECTION: forcing a failure. [ 68.656564][ T4963] name failslab, interval 1, probability 0, space 0, times 0 [ 68.658710][ T4963] CPU: 1 PID: 4963 Comm: syz.0.20 Tainted: G W syzkaller #0 [ 68.660003][ T4963] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/02/2026 [ 68.661539][ T4963] Call trace: [ 68.662039][ T4963] dump_backtrace+0x0/0x458 [ 68.662726][ T4963] show_stack+0x2c/0x3c [ 68.663350][ T4963] __dump_stack+0x30/0x40 [ 68.664023][ T4963] dump_stack_lvl+0xf4/0x15c [ 68.664786][ T4963] dump_stack+0x1c/0x5c [ 68.665569][ T4963] should_fail+0x3c8/0x520 [ 68.666388][ T4963] __should_failslab+0xbc/0x10c [ 68.667269][ T4963] should_failslab+0x10/0x28 [ 68.668058][ T4963] slab_pre_alloc_hook+0x64/0xe8 [ 68.668778][ T4963] kmem_cache_alloc_trace+0x98/0x3f0 [ 68.669609][ T4963] btrfs_delete_delayed_dir_index+0x22c/0x574 [ 68.670654][ T4963] __btrfs_unlink_inode+0x34c/0xab8 [ 68.671477][ T4963] btrfs_unlink+0x10c/0x25c [ 68.672375][ T4963] vfs_unlink+0x2e0/0x4f4 [ 68.673241][ T4963] do_unlinkat+0x318/0x624 [ 68.674089][ T4963] __arm64_sys_unlinkat+0xe0/0xfc [ 68.674967][ T4963] invoke_syscall+0x98/0x28c [ 68.675745][ T4963] el0_svc_common+0x13c/0x258 [ 68.676533][ T4963] do_el0_svc+0x5c/0x140 [ 68.677204][ T4963] el0_svc+0x78/0x1d0 [ 68.677831][ T4963] el0t_64_sync_handler+0xcc/0xe4 [ 68.678656][ T4963] el0t_64_sync+0x1a0/0x1a4 [ 68.681151][ T4963] ------------[ cut here ]------------ [ 68.682072][ T4963] WARNING: CPU: 1 PID: 4963 at fs/btrfs/inode.c:4182 __btrfs_unlink_inode+0x8d8/0xab8 [ 68.683401][ T4963] Modules linked in: [ 68.683990][ T4963] CPU: 1 PID: 4963 Comm: syz.0.20 Tainted: G W syzkaller #0 [ 68.685388][ T4963] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/02/2026 [ 68.687128][ T4963] pstate: 62400005 (nZCv daif +PAN -UAO +TCO -DIT -SSBS BTYPE=--) [ 68.688410][ T4963] pc : __btrfs_unlink_inode+0x8d8/0xab8 [ 68.689389][ T4963] lr : __btrfs_unlink_inode+0x8d8/0xab8 [ 68.690264][ T4963] sp : ffff800020737a80 [ 68.690917][ T4963] x29: ffff800020737b10 x28: 0000000000000104 x27: ffff0000ece28410 [ 68.692169][ T4963] x26: 0000000000000100 x25: 00000000fffffff4 x24: ffff0000c85e09a0 [ 68.693435][ T4963] x23: ffff0000e2453370 x22: ffff0000ee400000 x21: 1fffe0001c48a679 [ 68.694725][ T4963] x20: ffff0000e24533c8 x19: dfff800000000000 x18: 0000000000000000 [ 68.696026][ T4963] x17: 0000000000000000 x16: ffff80001134e478 x15: 0000000000000000 [ 68.697428][ T4963] x14: 0000000000000001 x13: 1fffe000341d2dab x12: 0000000000000000 [ 68.698829][ T4963] x11: ff8080000830061c x10: 0000000000000000 x9 : 3f7518b5b19c6b00 [ 68.700109][ T4963] x8 : 3f7518b5b19c6b00 x7 : 0000000000000001 x6 : 0000000000000001 [ 68.701440][ T4963] x5 : ffff800020737398 x4 : ffff80001446f500 x3 : ffff80000850f688 [ 68.702636][ T4963] x2 : 0000000000000001 x1 : 0000000100000000 x0 : 0000000000000026 [ 68.704107][ T4963] Call trace: [ 68.704653][ T4963] __btrfs_unlink_inode+0x8d8/0xab8 [ 68.705524][ T4963] btrfs_unlink+0x10c/0x25c [ 68.706295][ T4963] vfs_unlink+0x2e0/0x4f4 [ 68.707041][ T4963] do_unlinkat+0x318/0x624 [ 68.707746][ T4963] __arm64_sys_unlinkat+0xe0/0xfc [ 68.708641][ T4963] invoke_syscall+0x98/0x28c [ 68.709402][ T4963] el0_svc_common+0x13c/0x258 [ 68.710147][ T4963] do_el0_svc+0x5c/0x140 [ 68.710822][ T4963] el0_svc+0x78/0x1d0 [ 68.711453][ T4963] el0t_64_sync_handler+0xcc/0xe4 [ 68.712316][ T4963] el0t_64_sync+0x1a0/0x1a4 [ 68.713012][ T4963] irq event stamp: 79134 [ 68.713731][ T4963] hardirqs last enabled at (79133): [] __up_console_sem+0xb4/0xfc [ 68.715231][ T4963] hardirqs last disabled at (79134): [] el1_dbg+0x24/0x80 [ 68.716585][ T4963] softirqs last enabled at (79114): [] handle_softirqs+0xa70/0xc14 [ 68.718105][ T4963] softirqs last disabled at (79087): [] __irq_exit_rcu+0x240/0x434 [ 68.719584][ T4963] ---[ end trace 149d0c2dff8b1a7c ]--- [ 68.722604][ T4963] BTRFS: error (device loop0) in __btrfs_unlink_inode:4182: errno=-12 Out of memory [ 68.724055][ T4963] BTRFS info (device loop0): forced readonly [ 68.868663][ T4985] loop0: detected capacity change from 0 to 32768 [ 68.897185][ T4985] BTRFS: device fsid c9fe44da-de57-406a-8241-57ec7d4412cf devid 1 transid 8 /dev/loop0 scanned by syz.0.21 (4985) [ 68.900910][ T4985] BTRFS info (device loop0): using crc32c (crc32c-generic) checksum algorithm [ 68.902506][ T4985] BTRFS info (device loop0): using free space tree [ 68.903498][ T4985] BTRFS info (device loop0): has skinny extents [ 68.926609][ T4985] BTRFS info (device loop0): enabling ssd optimizations [ 68.931761][ T4985] FAULT_INJECTION: forcing a failure. [ 68.931761][ T4985] name failslab, interval 1, probability 0, space 0, times 0 [ 68.934071][ T4985] CPU: 0 PID: 4985 Comm: syz.0.21 Tainted: G W syzkaller #0 [ 68.935561][ T4985] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/02/2026 [ 68.937368][ T4985] Call trace: [ 68.937966][ T4985] dump_backtrace+0x0/0x458 [ 68.938708][ T4985] show_stack+0x2c/0x3c [ 68.939471][ T4985] __dump_stack+0x30/0x40 [ 68.940210][ T4985] dump_stack_lvl+0xf4/0x15c [ 68.941032][ T4985] dump_stack+0x1c/0x5c [ 68.941830][ T4985] should_fail+0x3c8/0x520 [ 68.942674][ T4985] __should_failslab+0xbc/0x10c [ 68.943642][ T4985] should_failslab+0x10/0x28 [ 68.944534][ T4985] slab_pre_alloc_hook+0x64/0xe8 [ 68.945432][ T4985] kmem_cache_alloc_trace+0x98/0x3f0 [ 68.946464][ T4985] btrfs_delete_delayed_dir_index+0x22c/0x574 [ 68.947650][ T4985] __btrfs_unlink_inode+0x34c/0xab8 [ 68.948551][ T4985] btrfs_unlink+0x10c/0x25c [ 68.949356][ T4985] vfs_unlink+0x2e0/0x4f4 [ 68.950145][ T4985] do_unlinkat+0x318/0x624 [ 68.950926][ T4985] __arm64_sys_unlinkat+0xe0/0xfc [ 68.951857][ T4985] invoke_syscall+0x98/0x28c [ 68.952661][ T4985] el0_svc_common+0x13c/0x258 [ 68.953412][ T4985] do_el0_svc+0x5c/0x140 [ 68.954071][ T4985] el0_svc+0x78/0x1d0 [ 68.954801][ T4985] el0t_64_sync_handler+0xcc/0xe4 [ 68.955696][ T4985] el0t_64_sync+0x1a0/0x1a4 [ 68.958296][ T4985] ------------[ cut here ]------------ [ 68.960610][ T4985] WARNING: CPU: 0 PID: 4985 at fs/btrfs/inode.c:4182 __btrfs_unlink_inode+0x8d8/0xab8 [ 68.962250][ T4985] Modules linked in: [ 68.962869][ T4985] CPU: 0 PID: 4985 Comm: syz.0.21 Tainted: G W syzkaller #0 [ 68.964220][ T4985] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/02/2026 [ 68.965927][ T4985] pstate: 62400005 (nZCv daif +PAN -UAO +TCO -DIT -SSBS BTYPE=--) [ 68.967286][ T4985] pc : __btrfs_unlink_inode+0x8d8/0xab8 [ 68.968233][ T4985] lr : __btrfs_unlink_inode+0x8d8/0xab8 [ 68.969203][ T4985] sp : ffff800020867a80 [ 68.969871][ T4985] x29: ffff800020867b10 x28: 0000000000000104 x27: ffff0000ecdfd010 [ 68.971262][ T4985] x26: 0000000000000100 x25: 00000000fffffff4 x24: ffff0000ce582f20 [ 68.972654][ T4985] x23: ffff0000deb668f0 x22: ffff0000e7c9c000 x21: 1fffe0001bd6cd29 [ 68.974207][ T4985] x20: ffff0000deb66948 x19: dfff800000000000 x18: 0000000000000000 [ 68.975627][ T4985] x17: 0000000000000000 x16: ffff80001134e478 x15: 0000000000000000 [ 68.977251][ T4985] x14: 0000000000000001 x13: 1fffe000341cebab x12: 0000000000000000 [ 68.978632][ T4985] x11: ff8080000830061c x10: 0000000000000000 x9 : c3e893985c80d000 [ 68.980059][ T4985] x8 : c3e893985c80d000 x7 : 0000000000000001 x6 : 0000000000000001 [ 68.981411][ T4985] x5 : ffff800020867398 x4 : ffff80001446f500 x3 : ffff80000850f688 [ 68.982971][ T4985] x2 : 0000000000000001 x1 : 0000000100000000 x0 : 0000000000000026 [ 68.984358][ T4985] Call trace: [ 68.984943][ T4985] __btrfs_unlink_inode+0x8d8/0xab8 [ 68.985889][ T4985] btrfs_unlink+0x10c/0x25c [ 68.986745][ T4985] vfs_unlink+0x2e0/0x4f4 [ 68.987598][ T4985] do_unlinkat+0x318/0x624 [ 68.988397][ T4985] __arm64_sys_unlinkat+0xe0/0xfc [ 68.989280][ T4985] invoke_syscall+0x98/0x28c [ 68.990102][ T4985] el0_svc_common+0x13c/0x258 [ 68.990935][ T4985] do_el0_svc+0x5c/0x140 [ 68.991694][ T4985] el0_svc+0x78/0x1d0 [ 68.992387][ T4985] el0t_64_sync_handler+0xcc/0xe4 [ 68.993217][ T4985] el0t_64_sync+0x1a0/0x1a4 [ 68.994031][ T4985] irq event stamp: 80018 [ 68.994756][ T4985] hardirqs last enabled at (80017): [] __up_console_sem+0xb4/0xfc [ 68.996481][ T4985] hardirqs last disabled at (80018): [] el1_dbg+0x24/0x80 [ 68.998095][ T4985] softirqs last enabled at (79994): [] handle_softirqs+0xa70/0xc14 [ 68.999916][ T4985] softirqs last disabled at (79955): [] __irq_exit_rcu+0x240/0x434 [ 69.001562][ T4985] ---[ end trace 149d0c2dff8b1a7d ]--- [ 69.004678][ T4985] BTRFS: error (device loop0) in __btrfs_unlink_inode:4182: errno=-12 Out of memory [ 69.006658][ T4985] BTRFS info (device loop0): forced readonly [ 69.121425][ T928] device hsr_slave_0 left promiscuous mode [ 69.135793][ T928] device hsr_slave_1 left promiscuous mode [ 69.187162][ T5007] loop0: detected capacity change from 0 to 32768 [ 69.214492][ T928] batman_adv: batadv0: Interface deactivated: batadv_slave_0 [ 69.215655][ T928] batman_adv: batadv0: Removing interface: batadv_slave_0 [ 69.217192][ T928] batman_adv: batadv0: Interface deactivated: batadv_slave_1 [ 69.218301][ T928] batman_adv: batadv0: Removing interface: batadv_slave_1 [ 69.219556][ T928] device bridge_slave_1 left promiscuous mode [ 69.220546][ T928] bridge0: port 2(bridge_slave_1) entered disabled state [ 69.255012][ T928] device bridge_slave_0 left promiscuous mode [ 69.256162][ T928] bridge0: port 1(bridge_slave_0) entered disabled state [ 69.277236][ T5007] BTRFS: device fsid c9fe44da-de57-406a-8241-57ec7d4412cf devid 1 transid 8 /dev/loop0 scanned by syz.0.22 (5007) [ 69.280995][ T5007] BTRFS info (device loop0): using crc32c (crc32c-generic) checksum algorithm [ 69.282457][ T5007] BTRFS info (device loop0): using free space tree [ 69.283573][ T5007] BTRFS info (device loop0): has skinny extents [ 69.300945][ T5007] BTRFS info (device loop0): enabling ssd optimizations [ 69.306464][ T5007] FAULT_INJECTION: forcing a failure. [ 69.306464][ T5007] name failslab, interval 1, probability 0, space 0, times 0 [ 69.308503][ T5007] CPU: 0 PID: 5007 Comm: syz.0.22 Tainted: G W syzkaller #0 [ 69.309969][ T5007] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/02/2026 [ 69.311605][ T5007] Call trace: [ 69.312162][ T5007] dump_backtrace+0x0/0x458 [ 69.312856][ T5007] show_stack+0x2c/0x3c [ 69.313598][ T5007] __dump_stack+0x30/0x40 [ 69.314382][ T5007] dump_stack_lvl+0xf4/0x15c [ 69.315230][ T5007] dump_stack+0x1c/0x5c [ 69.315985][ T5007] should_fail+0x3c8/0x520 [ 69.316797][ T5007] __should_failslab+0xbc/0x10c [ 69.317698][ T5007] should_failslab+0x10/0x28 [ 69.318526][ T5007] slab_pre_alloc_hook+0x64/0xe8 [ 69.319380][ T5007] kmem_cache_alloc_trace+0x98/0x3f0 [ 69.320284][ T5007] btrfs_delete_delayed_dir_index+0x22c/0x574 [ 69.321334][ T5007] __btrfs_unlink_inode+0x34c/0xab8 [ 69.322209][ T5007] btrfs_unlink+0x10c/0x25c [ 69.322946][ T5007] vfs_unlink+0x2e0/0x4f4 [ 69.323670][ T5007] do_unlinkat+0x318/0x624 [ 69.324432][ T5007] __arm64_sys_unlinkat+0xe0/0xfc [ 69.325317][ T5007] invoke_syscall+0x98/0x28c [ 69.326093][ T5007] el0_svc_common+0x13c/0x258 [ 69.326864][ T5007] do_el0_svc+0x5c/0x140 [ 69.327603][ T5007] el0_svc+0x78/0x1d0 [ 69.328346][ T5007] el0t_64_sync_handler+0xcc/0xe4 [ 69.329238][ T5007] el0t_64_sync+0x1a0/0x1a4 [ 69.332993][ T5007] ------------[ cut here ]------------ [ 69.334023][ T5007] WARNING: CPU: 0 PID: 5007 at fs/btrfs/inode.c:4182 __btrfs_unlink_inode+0x8d8/0xab8 [ 69.335729][ T5007] Modules linked in: [ 69.336391][ T5007] CPU: 0 PID: 5007 Comm: syz.0.22 Tainted: G W syzkaller #0 [ 69.337932][ T5007] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/02/2026 [ 69.339717][ T5007] pstate: 62400005 (nZCv daif +PAN -UAO +TCO -DIT -SSBS BTYPE=--) [ 69.341025][ T5007] pc : __btrfs_unlink_inode+0x8d8/0xab8 [ 69.342069][ T5007] lr : __btrfs_unlink_inode+0x8d8/0xab8 [ 69.343033][ T5007] sp : ffff8000208a7a80 [ 69.343732][ T5007] x29: ffff8000208a7b10 x28: 0000000000000104 x27: ffff0000ecdfd410 [ 69.345101][ T5007] x26: 0000000000000100 x25: 00000000fffffff4 x24: ffff0000ce179580 [ 69.346421][ T5007] x23: ffff0000deb66a50 x22: ffff0000cf36a000 x21: 1fffe0001bd6cd55 [ 69.347832][ T5007] x20: ffff0000deb66aa8 x19: dfff800000000000 x18: 0000000000000000 [ 69.349413][ T5007] x17: 0000000000000000 x16: ffff80001134e478 x15: 0000000000000000 [ 69.350854][ T5007] x14: 0000000000000001 x13: 1fffe000341cebab x12: 0000000000000000 [ 69.352331][ T5007] x11: ff8080000830061c x10: 0000000000000000 x9 : 03e730500fde9a00 [ 69.353743][ T5007] x8 : 03e730500fde9a00 x7 : 0000000000000001 x6 : 0000000000000001 [ 69.355208][ T5007] x5 : ffff8000208a7398 x4 : ffff80001446f500 x3 : ffff80000850f688 [ 69.356651][ T5007] x2 : 0000000000000001 x1 : 0000000100000000 x0 : 0000000000000026 [ 69.358060][ T5007] Call trace: [ 69.358594][ T5007] __btrfs_unlink_inode+0x8d8/0xab8 [ 69.359543][ T5007] btrfs_unlink+0x10c/0x25c [ 69.360337][ T5007] vfs_unlink+0x2e0/0x4f4 [ 69.361073][ T5007] do_unlinkat+0x318/0x624 [ 69.361859][ T5007] __arm64_sys_unlinkat+0xe0/0xfc [ 69.362775][ T5007] invoke_syscall+0x98/0x28c [ 69.363558][ T5007] el0_svc_common+0x13c/0x258 [ 69.364366][ T5007] do_el0_svc+0x5c/0x140 [ 69.365239][ T5007] el0_svc+0x78/0x1d0 [ 69.365999][ T5007] el0t_64_sync_handler+0xcc/0xe4 [ 69.367003][ T5007] el0t_64_sync+0x1a0/0x1a4 [ 69.367873][ T5007] irq event stamp: 79662 [ 69.368620][ T5007] hardirqs last enabled at (79661): [] __up_console_sem+0xb4/0xfc [ 69.370391][ T5007] hardirqs last disabled at (79662): [] el1_dbg+0x24/0x80 [ 69.371877][ T5007] softirqs last enabled at (79642): [] handle_softirqs+0xa70/0xc14 [ 69.373730][ T5007] softirqs last disabled at (79595): [] __irq_exit_rcu+0x240/0x434 [ 69.375616][ T5007] ---[ end trace 149d0c2dff8b1a7e ]--- [ 69.378900][ T5007] BTRFS: error (device loop0) in __btrfs_unlink_inode:4182: errno=-12 Out of memory [ 69.380598][ T5007] BTRFS info (device loop0): forced readonly [ 69.415914][ T928] device veth1_macvtap left promiscuous mode [ 69.416960][ T928] device veth0_macvtap left promiscuous mode [ 69.417885][ T928] device veth1_vlan left promiscuous mode [ 69.418845][ T928] device veth0_vlan left promiscuous mode [ 69.531461][ T928] team0 (unregistering): Port device team_slave_1 removed [ 69.535890][ T928] team0 (unregistering): Port device team_slave_0 removed [ 69.540635][ T928] bond0 (unregistering): (slave bond_slave_1): Releasing backup interface [ 69.567620][ T5029] loop0: detected capacity change from 0 to 32768 [ 69.578106][ T928] bond0 (unregistering): (slave bond_slave_0): Releasing backup interface [ 69.605953][ T2063] ieee802154 phy0 wpan0: encryption failed: -22 [ 69.607058][ T2063] ieee802154 phy1 wpan1: encryption failed: -22 [ 69.610014][ T3339] cfg80211: failed to load regulatory.db [ 69.620143][ T5029] BTRFS: device fsid c9fe44da-de57-406a-8241-57ec7d4412cf devid 1 transid 8 /dev/loop0 scanned by syz.0.23 (5029) [ 69.623222][ T5029] BTRFS info (device loop0): using crc32c (crc32c-generic) checksum algorithm [ 69.624772][ T5029] BTRFS info (device loop0): using free space tree [ 69.625870][ T5029] BTRFS info (device loop0): has skinny extents [ 69.718945][ T928] bond0 (unregistering): Released all slaves [ 69.789286][ T5029] BTRFS info (device loop0): enabling ssd optimizations [ 69.796163][ T5029] FAULT_INJECTION: forcing a failure. [ 69.796163][ T5029] name failslab, interval 1, probability 0, space 0, times 0 [ 69.798287][ T5029] CPU: 0 PID: 5029 Comm: syz.0.23 Tainted: G W syzkaller #0 [ 69.799707][ T5029] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/02/2026 [ 69.801337][ T5029] Call trace: [ 69.801854][ T5029] dump_backtrace+0x0/0x458 [ 69.802649][ T5029] show_stack+0x2c/0x3c [ 69.803426][ T5029] __dump_stack+0x30/0x40 [ 69.804198][ T5029] dump_stack_lvl+0xf4/0x15c [ 69.804984][ T5029] dump_stack+0x1c/0x5c [ 69.805723][ T5029] should_fail+0x3c8/0x520 [ 69.806543][ T5029] __should_failslab+0xbc/0x10c [ 69.807410][ T5029] should_failslab+0x10/0x28 [ 69.808194][ T5029] slab_pre_alloc_hook+0x64/0xe8 [ 69.809040][ T5029] kmem_cache_alloc+0x94/0x3d8 [ 69.809905][ T5029] start_transaction+0x530/0x1438 [ 69.810856][ T5029] btrfs_start_transaction_fallback_global_rsv+0x34/0x44 [ 69.812169][ T5029] btrfs_unlink+0x74/0x25c [ 69.812942][ T5029] vfs_unlink+0x2e0/0x4f4 [ 69.813786][ T5029] do_unlinkat+0x318/0x624 [ 69.814538][ T5029] __arm64_sys_unlinkat+0xe0/0xfc [ 69.815402][ T5029] invoke_syscall+0x98/0x28c [ 69.816228][ T5029] el0_svc_common+0x13c/0x258 [ 69.817076][ T5029] do_el0_svc+0x5c/0x140 [ 69.817848][ T5029] el0_svc+0x78/0x1d0 [ 69.818546][ T5029] el0t_64_sync_handler+0xcc/0xe4 [ 69.819436][ T5029] el0t_64_sync+0x1a0/0x1a4 [ 70.031898][ T5052] loop0: detected capacity change from 0 to 32768 [ 70.084513][ T4176] Bluetooth: hci0: command 0x041b tx timeout [ 70.135396][ T5052] BTRFS: device fsid c9fe44da-de57-406a-8241-57ec7d4412cf devid 1 transid 8 /dev/loop0 scanned by syz.0.24 (5052) [ 70.142464][ T5052] BTRFS info (device loop0): using crc32c (crc32c-generic) checksum algorithm [ 70.143905][ T5052] BTRFS info (device loop0): using free space tree [ 70.145241][ T5052] BTRFS info (device loop0): has skinny extents [ 70.153575][ T5052] BTRFS info (device loop0): enabling ssd optimizations [ 70.158021][ T5052] FAULT_INJECTION: forcing a failure. [ 70.158021][ T5052] name fail_page_alloc, interval 1, probability 0, space 0, times 1 [ 70.160027][ T5052] CPU: 0 PID: 5052 Comm: syz.0.24 Tainted: G W syzkaller #0 [ 70.161200][ T5052] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/02/2026 [ 70.162567][ T5052] Call trace: [ 70.163018][ T5052] dump_backtrace+0x0/0x458 [ 70.163669][ T5052] show_stack+0x2c/0x3c [ 70.164293][ T5052] __dump_stack+0x30/0x40 [ 70.164984][ T5052] dump_stack_lvl+0xf4/0x15c [ 70.165859][ T5052] dump_stack+0x1c/0x5c [ 70.166578][ T5052] should_fail+0x3c8/0x520 [ 70.167447][ T5052] should_fail_alloc_page+0x74/0xa8 [ 70.168273][ T5052] prepare_alloc_pages+0x160/0x460 [ 70.169126][ T5052] __alloc_pages+0x108/0x474 [ 70.169832][ T5052] alloc_pages+0x34c/0x5c0 [ 70.170649][ T5052] new_slab+0xdc/0x53c [ 70.171358][ T5052] ___slab_alloc+0x6ac/0xd84 [ 70.172111][ T5052] __slab_alloc+0x68/0xc0 [ 70.172838][ T5052] kmem_cache_alloc+0x2a8/0x3d8 [ 70.173664][ T5052] btrfs_alloc_path+0x5c/0x68 [ 70.174419][ T5052] __btrfs_unlink_inode+0x1e0/0xab8 [ 70.175219][ T5052] btrfs_unlink+0x10c/0x25c [ 70.175961][ T5052] vfs_unlink+0x2e0/0x4f4 [ 70.176645][ T5052] do_unlinkat+0x318/0x624 [ 70.177367][ T5052] __arm64_sys_unlinkat+0xe0/0xfc [ 70.178199][ T5052] invoke_syscall+0x98/0x28c [ 70.179034][ T5052] el0_svc_common+0x13c/0x258 [ 70.179854][ T5052] do_el0_svc+0x5c/0x140 [ 70.180548][ T5052] el0_svc+0x78/0x1d0 [ 70.181252][ T5052] el0t_64_sync_handler+0xcc/0xe4 [ 70.182125][ T5052] el0t_64_sync+0x1a0/0x1a4 [ 70.220811][ T4709] BTRFS: device fsid c9fe44da-de57-406a-8241-57ec7d4412cf devid 1 transid 10 /dev/loop0 scanned by udevd (4709) [ 70.325976][ T5074] BTRFS info (device loop0): using crc32c (crc32c-generic) checksum algorithm [ 70.327494][ T5074] BTRFS info (device loop0): using free space tree [ 70.328622][ T5074] BTRFS info (device loop0): has skinny extents [ 70.335869][ T5074] BTRFS info (device loop0): enabling ssd optimizations [ 70.339604][ T5074] FAULT_INJECTION: forcing a failure. [ 70.339604][ T5074] name failslab, interval 1, probability 0, space 0, times 0 [ 70.341603][ T5074] CPU: 1 PID: 5074 Comm: syz.0.25 Tainted: G W syzkaller #0 [ 70.342923][ T5074] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/02/2026 [ 70.344485][ T5074] Call trace: [ 70.345053][ T5074] dump_backtrace+0x0/0x458 [ 70.345810][ T5074] show_stack+0x2c/0x3c [ 70.346464][ T5074] __dump_stack+0x30/0x40 [ 70.347209][ T5074] dump_stack_lvl+0xf4/0x15c [ 70.347991][ T5074] dump_stack+0x1c/0x5c [ 70.348750][ T5074] should_fail+0x3c8/0x520 [ 70.349461][ T5074] __should_failslab+0xbc/0x10c [ 70.350339][ T5074] should_failslab+0x10/0x28 [ 70.351139][ T5074] slab_pre_alloc_hook+0x64/0xe8 [ 70.351957][ T5074] kmem_cache_alloc_trace+0x98/0x3f0 [ 70.352875][ T5074] btrfs_delete_delayed_dir_index+0x22c/0x574 [ 70.353902][ T5074] __btrfs_unlink_inode+0x34c/0xab8 [ 70.354755][ T5074] btrfs_unlink+0x10c/0x25c [ 70.355563][ T5074] vfs_unlink+0x2e0/0x4f4 [ 70.356311][ T5074] do_unlinkat+0x318/0x624 [ 70.357032][ T5074] __arm64_sys_unlinkat+0xe0/0xfc [ 70.357902][ T5074] invoke_syscall+0x98/0x28c [ 70.358671][ T5074] el0_svc_common+0x13c/0x258 [ 70.359381][ T5074] do_el0_svc+0x5c/0x140 [ 70.360082][ T5074] el0_svc+0x78/0x1d0 [ 70.360796][ T5074] el0t_64_sync_handler+0xcc/0xe4 [ 70.361626][ T5074] el0t_64_sync+0x1a0/0x1a4 [ 70.364099][ T5074] ------------[ cut here ]------------ [ 70.365347][ T5074] WARNING: CPU: 1 PID: 5074 at fs/btrfs/inode.c:4182 __btrfs_unlink_inode+0x8d8/0xab8 [ 70.366905][ T5074] Modules linked in: [ 70.367564][ T5074] CPU: 1 PID: 5074 Comm: syz.0.25 Tainted: G W syzkaller #0 [ 70.368894][ T5074] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/02/2026 [ 70.370485][ T5074] pstate: 62400005 (nZCv daif +PAN -UAO +TCO -DIT -SSBS BTYPE=--) [ 70.371688][ T5074] pc : __btrfs_unlink_inode+0x8d8/0xab8 [ 70.372567][ T5074] lr : __btrfs_unlink_inode+0x8d8/0xab8 [ 70.373409][ T5074] sp : ffff8000209a7a80 [ 70.374049][ T5074] x29: ffff8000209a7b10 x28: 0000000000000104 x27: ffff0000ece28810 [ 70.375438][ T5074] x26: 0000000000000100 x25: 00000000fffffff4 x24: ffff0000d50b1b00 [ 70.376763][ T5074] x23: ffff0000e2453580 x22: ffff0000d661a000 x21: 1fffe0001c48a6bb [ 70.378054][ T5074] x20: ffff0000e24535d8 x19: dfff800000000000 x18: 0000000000000000 [ 70.379454][ T5074] x17: 0000000000000000 x16: ffff80001134e478 x15: 0000000000000000 [ 70.381097][ T5074] x14: 0000000000000001 x13: 1fffe000341d2dab x12: 0000000000000000 [ 70.382698][ T5074] x11: ff8080000830061c x10: 0000000000000000 x9 : f385cceb2e13dd00 [ 70.384124][ T5074] x8 : f385cceb2e13dd00 x7 : 0000000000000001 x6 : 0000000000000001 [ 70.385502][ T5074] x5 : ffff8000209a7398 x4 : ffff80001446f500 x3 : ffff80000850f688 [ 70.386850][ T5074] x2 : 0000000000000001 x1 : 0000000100000000 x0 : 0000000000000026 [ 70.388105][ T5074] Call trace: [ 70.388685][ T5074] __btrfs_unlink_inode+0x8d8/0xab8 [ 70.389587][ T5074] btrfs_unlink+0x10c/0x25c [ 70.390321][ T5074] vfs_unlink+0x2e0/0x4f4 [ 70.391030][ T5074] do_unlinkat+0x318/0x624 [ 70.391812][ T5074] __arm64_sys_unlinkat+0xe0/0xfc [ 70.392762][ T5074] invoke_syscall+0x98/0x28c [ 70.393594][ T5074] el0_svc_common+0x13c/0x258 [ 70.394350][ T5074] do_el0_svc+0x5c/0x140 [ 70.395093][ T5074] el0_svc+0x78/0x1d0 [ 70.395735][ T5074] el0t_64_sync_handler+0xcc/0xe4 [ 70.396550][ T5074] el0t_64_sync+0x1a0/0x1a4 [ 70.397298][ T5074] irq event stamp: 79476 [ 70.397986][ T5074] hardirqs last enabled at (79475): [] __up_console_sem+0xb4/0xfc [ 70.399657][ T5074] hardirqs last disabled at (79476): [] el1_dbg+0x24/0x80 [ 70.401121][ T5074] softirqs last enabled at (79464): [] handle_softirqs+0xa70/0xc14 [ 70.402708][ T5074] softirqs last disabled at (79399): [] __irq_exit_rcu+0x240/0x434 [ 70.404399][ T5074] ---[ end trace 149d0c2dff8b1a7f ]--- [ 70.407473][ T5074] BTRFS: error (device loop0) in __btrfs_unlink_inode:4182: errno=-12 Out of memory [ 70.409065][ T5074] BTRFS info (device loop0): forced readonly [ 70.636468][ T5096] BTRFS: device fsid c9fe44da-de57-406a-8241-57ec7d4412cf devid 1 transid 8 /dev/loop0 scanned by syz.0.26 (5096) [ 70.639709][ T5096] BTRFS info (device loop0): using crc32c (crc32c-generic) checksum algorithm [ 70.641209][ T5096] BTRFS info (device loop0): using free space tree [ 70.642229][ T5096] BTRFS info (device loop0): has skinny extents [ 70.655573][ T5096] BTRFS info (device loop0): enabling ssd optimizations [ 70.660903][ T5096] FAULT_INJECTION: forcing a failure. [ 70.660903][ T5096] name failslab, interval 1, probability 0, space 0, times 0 [ 70.662855][ T5096] CPU: 0 PID: 5096 Comm: syz.0.26 Tainted: G W syzkaller #0 [ 70.664111][ T5096] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/02/2026 [ 70.665702][ T5096] Call trace: [ 70.666270][ T5096] dump_backtrace+0x0/0x458 [ 70.667031][ T5096] show_stack+0x2c/0x3c [ 70.667726][ T5096] __dump_stack+0x30/0x40 [ 70.668471][ T5096] dump_stack_lvl+0xf4/0x15c [ 70.669226][ T5096] dump_stack+0x1c/0x5c [ 70.669966][ T5096] should_fail+0x3c8/0x520 [ 70.670739][ T5096] __should_failslab+0xbc/0x10c [ 70.671552][ T5096] should_failslab+0x10/0x28 [ 70.672264][ T5096] slab_pre_alloc_hook+0x64/0xe8 [ 70.673011][ T5096] kmem_cache_alloc_trace+0x98/0x3f0 [ 70.673913][ T5096] btrfs_delete_delayed_dir_index+0x22c/0x574 [ 70.674927][ T5096] __btrfs_unlink_inode+0x34c/0xab8 [ 70.675812][ T5096] btrfs_unlink+0x10c/0x25c [ 70.676570][ T5096] vfs_unlink+0x2e0/0x4f4 [ 70.677277][ T5096] do_unlinkat+0x318/0x624 [ 70.678004][ T5096] __arm64_sys_unlinkat+0xe0/0xfc [ 70.678814][ T5096] invoke_syscall+0x98/0x28c [ 70.679575][ T5096] el0_svc_common+0x13c/0x258 [ 70.680378][ T5096] do_el0_svc+0x5c/0x140 [ 70.681101][ T5096] el0_svc+0x78/0x1d0 [ 70.681773][ T5096] el0t_64_sync_handler+0xcc/0xe4 [ 70.682650][ T5096] el0t_64_sync+0x1a0/0x1a4 [ 70.684701][ T5096] ------------[ cut here ]------------ [ 70.685620][ T5096] WARNING: CPU: 0 PID: 5096 at fs/btrfs/inode.c:4182 __btrfs_unlink_inode+0x8d8/0xab8 [ 70.687051][ T5096] Modules linked in: [ 70.687643][ T5096] CPU: 0 PID: 5096 Comm: syz.0.26 Tainted: G W syzkaller #0 [ 70.688892][ T5096] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/02/2026 [ 70.690433][ T5096] pstate: 62400005 (nZCv daif +PAN -UAO +TCO -DIT -SSBS BTYPE=--) [ 70.691529][ T5096] pc : __btrfs_unlink_inode+0x8d8/0xab8 [ 70.692390][ T5096] lr : __btrfs_unlink_inode+0x8d8/0xab8 [ 70.693264][ T5096] sp : ffff8000209a7a80 [ 70.693914][ T5096] x29: ffff8000209a7b10 x28: 0000000000000104 x27: ffff0000ece28c10 [ 70.695240][ T5096] x26: 0000000000000100 x25: 00000000fffffff4 x24: ffff0000d6ae4d10 [ 70.696553][ T5096] x23: ffff0000de88e160 x22: ffff0000ea1c6000 x21: 1fffe0001bd11c37 [ 70.697898][ T5096] x20: ffff0000de88e1b8 x19: dfff800000000000 x18: 0000000000000000 [ 70.699334][ T5096] x17: 0000000000000000 x16: ffff80001134e478 x15: 0000000000000000 [ 70.700742][ T5096] x14: 0000000000000001 x13: 1fffe000341cebab x12: 0000000000000000 [ 70.702090][ T5096] x11: ff8080000830061c x10: 0000000000000000 x9 : 3df0047111a68600 [ 70.703434][ T5096] x8 : 3df0047111a68600 x7 : 0000000000000001 x6 : 0000000000000001 [ 70.704761][ T5096] x5 : ffff8000209a7398 x4 : ffff80001446f500 x3 : ffff80000850f688 [ 70.706091][ T5096] x2 : 0000000000000001 x1 : 0000000100000000 x0 : 0000000000000026 [ 70.707458][ T5096] Call trace: [ 70.707990][ T5096] __btrfs_unlink_inode+0x8d8/0xab8 [ 70.708840][ T5096] btrfs_unlink+0x10c/0x25c [ 70.709554][ T5096] vfs_unlink+0x2e0/0x4f4 [ 70.710339][ T5096] do_unlinkat+0x318/0x624 [ 70.711114][ T5096] __arm64_sys_unlinkat+0xe0/0xfc [ 70.712023][ T5096] invoke_syscall+0x98/0x28c [ 70.712867][ T5096] el0_svc_common+0x13c/0x258 [ 70.713783][ T5096] do_el0_svc+0x5c/0x140 [ 70.714635][ T5096] el0_svc+0x78/0x1d0 [ 70.715290][ T5096] el0t_64_sync_handler+0xcc/0xe4 [ 70.716155][ T5096] el0t_64_sync+0x1a0/0x1a4 [ 70.716840][ T5096] irq event stamp: 78832 [ 70.717441][ T5096] hardirqs last enabled at (78831): [] __up_console_sem+0xb4/0xfc [ 70.719065][ T5096] hardirqs last disabled at (78832): [] el1_dbg+0x24/0x80 [ 70.720546][ T5096] softirqs last enabled at (78812): [] handle_softirqs+0xa70/0xc14 [ 70.722124][ T5096] softirqs last disabled at (78789): [] __irq_exit_rcu+0x240/0x434 [ 70.723642][ T5096] ---[ end trace 149d0c2dff8b1a80 ]--- [ 70.726290][ T5096] BTRFS: error (device loop0) in __btrfs_unlink_inode:4182: errno=-12 Out of memory [ 70.727784][ T5096] BTRFS info (device loop0): forced readonly [ 70.948424][ T5118] BTRFS: device fsid c9fe44da-de57-406a-8241-57ec7d4412cf devid 1 transid 8 /dev/loop0 scanned by syz.0.27 (5118) [ 70.953119][ T5118] BTRFS info (device loop0): using crc32c (crc32c-generic) checksum algorithm [ 70.954695][ T5118] BTRFS info (device loop0): using free space tree [ 70.955810][ T5118] BTRFS info (device loop0): has skinny extents [ 70.963034][ T5118] BTRFS info (device loop0): enabling ssd optimizations [ 70.969511][ T5118] FAULT_INJECTION: forcing a failure. [ 70.969511][ T5118] name failslab, interval 1, probability 0, space 0, times 0 [ 70.971648][ T5118] CPU: 0 PID: 5118 Comm: syz.0.27 Tainted: G W syzkaller #0 [ 70.973125][ T5118] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/02/2026 [ 70.974798][ T5118] Call trace: [ 70.975365][ T5118] dump_backtrace+0x0/0x458 [ 70.976156][ T5118] show_stack+0x2c/0x3c [ 70.976868][ T5118] __dump_stack+0x30/0x40 [ 70.977597][ T5118] dump_stack_lvl+0xf4/0x15c [ 70.978387][ T5118] dump_stack+0x1c/0x5c [ 70.979083][ T5118] should_fail+0x3c8/0x520 [ 70.979782][ T5118] __should_failslab+0xbc/0x10c [ 70.980616][ T5118] should_failslab+0x10/0x28 [ 70.981431][ T5118] slab_pre_alloc_hook+0x64/0xe8 [ 70.982253][ T5118] kmem_cache_alloc_trace+0x98/0x3f0 [ 70.983164][ T5118] btrfs_delete_delayed_dir_index+0x22c/0x574 [ 70.984216][ T5118] __btrfs_unlink_inode+0x34c/0xab8 [ 70.985085][ T5118] btrfs_unlink+0x10c/0x25c [ 70.985819][ T5118] vfs_unlink+0x2e0/0x4f4 [ 70.986557][ T5118] do_unlinkat+0x318/0x624 [ 70.987299][ T5118] __arm64_sys_unlinkat+0xe0/0xfc [ 70.988160][ T5118] invoke_syscall+0x98/0x28c [ 70.988994][ T5118] el0_svc_common+0x13c/0x258 [ 70.989814][ T5118] do_el0_svc+0x5c/0x140 [ 70.990562][ T5118] el0_svc+0x78/0x1d0 [ 70.991295][ T5118] el0t_64_sync_handler+0xcc/0xe4 [ 70.992147][ T5118] el0t_64_sync+0x1a0/0x1a4 [ 70.994033][ T5118] ------------[ cut here ]------------ [ 70.995135][ T5118] WARNING: CPU: 0 PID: 5118 at fs/btrfs/inode.c:4182 __btrfs_unlink_inode+0x8d8/0xab8 [ 70.996590][ T5118] Modules linked in: [ 70.997128][ T5118] CPU: 0 PID: 5118 Comm: syz.0.27 Tainted: G W syzkaller #0 [ 70.998459][ T5118] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/02/2026 [ 71.000155][ T5118] pstate: 62400005 (nZCv daif +PAN -UAO +TCO -DIT -SSBS BTYPE=--) [ 71.001374][ T5118] pc : __btrfs_unlink_inode+0x8d8/0xab8 [ 71.002262][ T5118] lr : __btrfs_unlink_inode+0x8d8/0xab8 [ 71.003191][ T5118] sp : ffff8000209a7a80 [ 71.003854][ T5118] x29: ffff8000209a7b10 x28: 0000000000000104 x27: ffff0000ecdfe010 [ 71.005232][ T5118] x26: 0000000000000100 x25: 00000000fffffff4 x24: ffff0000ec9b0210 [ 71.006577][ T5118] x23: ffff0000de88e2c0 x22: ffff0000d8f3c000 x21: 1fffe0001bd11c63 [ 71.007968][ T5118] x20: ffff0000de88e318 x19: dfff800000000000 x18: 0000000000000000 [ 71.009325][ T5118] x17: 0000000000000000 x16: ffff80001134e478 x15: 0000000000000000 [ 71.010745][ T5118] x14: 0000000000000001 x13: 1fffe000341cebab x12: 0000000000000000 [ 71.012233][ T5118] x11: ff8080000830061c x10: 0000000000000000 x9 : 316c48cc19f04b00 [ 71.013812][ T5118] x8 : 316c48cc19f04b00 x7 : 0000000000000001 x6 : 0000000000000001 [ 71.015439][ T5118] x5 : ffff8000209a7398 x4 : ffff80001446f500 x3 : ffff80000850f688 [ 71.017008][ T5118] x2 : 0000000000000001 x1 : 0000000100000000 x0 : 0000000000000026 [ 71.018538][ T5118] Call trace: [ 71.019114][ T5118] __btrfs_unlink_inode+0x8d8/0xab8 [ 71.020099][ T5118] btrfs_unlink+0x10c/0x25c [ 71.020893][ T5118] vfs_unlink+0x2e0/0x4f4 [ 71.021709][ T5118] do_unlinkat+0x318/0x624 [ 71.022550][ T5118] __arm64_sys_unlinkat+0xe0/0xfc [ 71.023488][ T5118] invoke_syscall+0x98/0x28c [ 71.024320][ T5118] el0_svc_common+0x13c/0x258 [ 71.025198][ T5118] do_el0_svc+0x5c/0x140 [ 71.026032][ T5118] el0_svc+0x78/0x1d0 [ 71.026740][ T5118] el0t_64_sync_handler+0xcc/0xe4 [ 71.027591][ T5118] el0t_64_sync+0x1a0/0x1a4 [ 71.028384][ T5118] irq event stamp: 79376 [ 71.029062][ T5118] hardirqs last enabled at (79375): [] __up_console_sem+0xb4/0xfc [ 71.030755][ T5118] hardirqs last disabled at (79376): [] el1_dbg+0x24/0x80 [ 71.032448][ T5118] softirqs last enabled at (79366): [] handle_softirqs+0xa70/0xc14 [ 71.034190][ T5118] softirqs last disabled at (79349): [] __irq_exit_rcu+0x240/0x434 [ 71.036009][ T5118] ---[ end trace 149d0c2dff8b1a81 ]--- [ 71.037180][ T5118] BTRFS: error (device loop0) in __btrfs_unlink_inode:4182: errno=-12 Out of memory [ 71.038840][ T5118] BTRFS info (device loop0): forced readonly 1970/01/01 00:01:11 executed programs: 15 [ 71.215741][ T5140] BTRFS: device fsid c9fe44da-de57-406a-8241-57ec7d4412cf devid 1 transid 8 /dev/loop0 scanned by syz.0.28 (5140) [ 71.265547][ T5140] BTRFS info (device loop0): using crc32c (crc32c-generic) checksum algorithm [ 71.266969][ T5140] BTRFS info (device loop0): using free space tree [ 71.268008][ T5140] BTRFS info (device loop0): has skinny extents [ 71.394293][ T5140] BTRFS info (device loop0): enabling ssd optimizations [ 71.398421][ T5140] FAULT_INJECTION: forcing a failure. [ 71.398421][ T5140] name failslab, interval 1, probability 0, space 0, times 0 [ 71.400671][ T5140] CPU: 0 PID: 5140 Comm: syz.0.28 Tainted: G W syzkaller #0 [ 71.402096][ T5140] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/02/2026 [ 71.403676][ T5140] Call trace: [ 71.404200][ T5140] dump_backtrace+0x0/0x458 [ 71.405057][ T5140] show_stack+0x2c/0x3c [ 71.405780][ T5140] __dump_stack+0x30/0x40 [ 71.406597][ T5140] dump_stack_lvl+0xf4/0x15c [ 71.407454][ T5140] dump_stack+0x1c/0x5c [ 71.408261][ T5140] should_fail+0x3c8/0x520 [ 71.409049][ T5140] __should_failslab+0xbc/0x10c [ 71.409919][ T5140] should_failslab+0x10/0x28 [ 71.410692][ T5140] slab_pre_alloc_hook+0x64/0xe8 [ 71.411544][ T5140] kmem_cache_alloc+0x94/0x3d8 [ 71.412397][ T5140] btrfs_alloc_path+0x5c/0x68 [ 71.413196][ T5140] __btrfs_unlink_inode+0x1e0/0xab8 [ 71.414080][ T5140] btrfs_unlink+0x10c/0x25c [ 71.414829][ T5140] vfs_unlink+0x2e0/0x4f4 [ 71.415529][ T5140] do_unlinkat+0x318/0x624 [ 71.416291][ T5140] __arm64_sys_unlinkat+0xe0/0xfc [ 71.417180][ T5140] invoke_syscall+0x98/0x28c [ 71.417962][ T5140] el0_svc_common+0x13c/0x258 [ 71.418694][ T5140] do_el0_svc+0x5c/0x140 [ 71.419373][ T5140] el0_svc+0x78/0x1d0 [ 71.420088][ T5140] el0t_64_sync_handler+0xcc/0xe4 [ 71.420959][ T5140] el0t_64_sync+0x1a0/0x1a4 [ 71.625449][ T5163] BTRFS: device fsid c9fe44da-de57-406a-8241-57ec7d4412cf devid 1 transid 8 /dev/loop0 scanned by syz.0.29 (5163) [ 71.629231][ T5163] BTRFS info (device loop0): using crc32c (crc32c-generic) checksum algorithm [ 71.630653][ T5163] BTRFS info (device loop0): using free space tree [ 71.631620][ T5163] BTRFS info (device loop0): has skinny extents [ 71.655112][ T5163] BTRFS info (device loop0): enabling ssd optimizations [ 71.659908][ T5163] FAULT_INJECTION: forcing a failure. [ 71.659908][ T5163] name failslab, interval 1, probability 0, space 0, times 0 [ 71.662106][ T5163] CPU: 1 PID: 5163 Comm: syz.0.29 Tainted: G W syzkaller #0 [ 71.663488][ T5163] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/02/2026 [ 71.665181][ T5163] Call trace: [ 71.665723][ T5163] dump_backtrace+0x0/0x458 [ 71.666510][ T5163] show_stack+0x2c/0x3c [ 71.667187][ T5163] __dump_stack+0x30/0x40 [ 71.667899][ T5163] dump_stack_lvl+0xf4/0x15c [ 71.668694][ T5163] dump_stack+0x1c/0x5c [ 71.669433][ T5163] should_fail+0x3c8/0x520 [ 71.670171][ T5163] __should_failslab+0xbc/0x10c [ 71.671023][ T5163] should_failslab+0x10/0x28 [ 71.671986][ T5163] slab_pre_alloc_hook+0x64/0xe8 [ 71.672948][ T5163] kmem_cache_alloc_trace+0x98/0x3f0 [ 71.673998][ T5163] btrfs_delete_delayed_dir_index+0x22c/0x574 [ 71.675178][ T5163] __btrfs_unlink_inode+0x34c/0xab8 [ 71.676155][ T5163] btrfs_unlink+0x10c/0x25c [ 71.677003][ T5163] vfs_unlink+0x2e0/0x4f4 [ 71.677751][ T5163] do_unlinkat+0x318/0x624 [ 71.678529][ T5163] __arm64_sys_unlinkat+0xe0/0xfc [ 71.679389][ T5163] invoke_syscall+0x98/0x28c [ 71.680177][ T5163] el0_svc_common+0x13c/0x258 [ 71.681016][ T5163] do_el0_svc+0x5c/0x140 [ 71.681678][ T5163] el0_svc+0x78/0x1d0 [ 71.682321][ T5163] el0t_64_sync_handler+0xcc/0xe4 [ 71.683188][ T5163] el0t_64_sync+0x1a0/0x1a4 [ 71.687690][ T5163] ------------[ cut here ]------------ [ 71.688700][ T5163] WARNING: CPU: 1 PID: 5163 at fs/btrfs/inode.c:4182 __btrfs_unlink_inode+0x8d8/0xab8 [ 71.690174][ T5163] Modules linked in: [ 71.690851][ T5163] CPU: 1 PID: 5163 Comm: syz.0.29 Tainted: G W syzkaller #0 [ 71.692270][ T5163] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/02/2026 [ 71.693973][ T5163] pstate: 62400005 (nZCv daif +PAN -UAO +TCO -DIT -SSBS BTYPE=--) [ 71.695299][ T5163] pc : __btrfs_unlink_inode+0x8d8/0xab8 [ 71.696237][ T5163] lr : __btrfs_unlink_inode+0x8d8/0xab8 [ 71.697294][ T5163] sp : ffff800021507a80 [ 71.698062][ T5163] x29: ffff800021507b10 x28: 0000000000000104 x27: ffff0000ece29010 [ 71.699480][ T5163] x26: 0000000000000100 x25: 00000000fffffff4 x24: ffff0000cefe36e0 [ 71.700929][ T5163] x23: ffff0000e2453790 x22: ffff0000d9d0a000 x21: 1fffe0001c48a6fd [ 71.702444][ T5163] x20: ffff0000e24537e8 x19: dfff800000000000 x18: 0000000000000000 [ 71.703893][ T5163] x17: 0000000000000000 x16: ffff80001134e478 x15: 0000000000000000 [ 71.705293][ T5163] x14: 0000000000000001 x13: 1fffe000341d2dab x12: 0000000000000000 [ 71.706716][ T5163] x11: ff8080000830061c x10: 0000000000000000 x9 : 0fd3b0e485ea8700 [ 71.708100][ T5163] x8 : 0fd3b0e485ea8700 x7 : 0000000000000001 x6 : 0000000000000001 [ 71.709445][ T5163] x5 : ffff800021507398 x4 : ffff80001446f500 x3 : ffff80000850f688 [ 71.710781][ T5163] x2 : 0000000000000001 x1 : 0000000100000000 x0 : 0000000000000026 [ 71.712202][ T5163] Call trace: [ 71.712754][ T5163] __btrfs_unlink_inode+0x8d8/0xab8 [ 71.713679][ T5163] btrfs_unlink+0x10c/0x25c [ 71.714411][ T5163] vfs_unlink+0x2e0/0x4f4 [ 71.715154][ T5163] do_unlinkat+0x318/0x624 [ 71.715905][ T5163] __arm64_sys_unlinkat+0xe0/0xfc [ 71.716768][ T5163] invoke_syscall+0x98/0x28c [ 71.717557][ T5163] el0_svc_common+0x13c/0x258 [ 71.718317][ T5163] do_el0_svc+0x5c/0x140 [ 71.719016][ T5163] el0_svc+0x78/0x1d0 [ 71.719772][ T5163] el0t_64_sync_handler+0xcc/0xe4 [ 71.720638][ T5163] el0t_64_sync+0x1a0/0x1a4 [ 71.721483][ T5163] irq event stamp: 79124 [ 71.722308][ T5163] hardirqs last enabled at (79123): [] __up_console_sem+0xb4/0xfc [ 71.723950][ T5163] hardirqs last disabled at (79124): [] el1_dbg+0x24/0x80 [ 71.725477][ T5163] softirqs last enabled at (79104): [] handle_softirqs+0xa70/0xc14 [ 71.727163][ T5163] softirqs last disabled at (79065): [] __irq_exit_rcu+0x240/0x434 [ 71.728727][ T5163] ---[ end trace 149d0c2dff8b1a82 ]--- [ 71.730953][ T5163] BTRFS: error (device loop0) in __btrfs_unlink_inode:4182: errno=-12 Out of memory [ 71.732486][ T5163] BTRFS info (device loop0): forced readonly [ 71.923729][ T5184] BTRFS: device fsid c9fe44da-de57-406a-8241-57ec7d4412cf devid 1 transid 8 /dev/loop0 scanned by syz.0.30 (5184) [ 71.935358][ T5184] BTRFS info (device loop0): using crc32c (crc32c-generic) checksum algorithm [ 71.936752][ T5184] BTRFS info (device loop0): using free space tree [ 71.937730][ T5184] BTRFS info (device loop0): has skinny extents [ 71.976255][ T5184] BTRFS info (device loop0): enabling ssd optimizations [ 71.980005][ T5184] FAULT_INJECTION: forcing a failure. [ 71.980005][ T5184] name failslab, interval 1, probability 0, space 0, times 0 [ 71.982100][ T5184] CPU: 0 PID: 5184 Comm: syz.0.30 Tainted: G W syzkaller #0 [ 71.983379][ T5184] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/02/2026 [ 71.984942][ T5184] Call trace: [ 71.985466][ T5184] dump_backtrace+0x0/0x458 [ 71.986188][ T5184] show_stack+0x2c/0x3c [ 71.986835][ T5184] __dump_stack+0x30/0x40 [ 71.987540][ T5184] dump_stack_lvl+0xf4/0x15c [ 71.988262][ T5184] dump_stack+0x1c/0x5c [ 71.988936][ T5184] should_fail+0x3c8/0x520 [ 71.989639][ T5184] __should_failslab+0xbc/0x10c [ 71.990475][ T5184] should_failslab+0x10/0x28 [ 71.991278][ T5184] slab_pre_alloc_hook+0x64/0xe8 [ 71.992127][ T5184] kmem_cache_alloc+0x94/0x3d8 [ 71.992916][ T5184] btrfs_alloc_path+0x5c/0x68 [ 71.993708][ T5184] __btrfs_unlink_inode+0x1e0/0xab8 [ 71.994572][ T5184] btrfs_unlink+0x10c/0x25c [ 71.995312][ T5184] vfs_unlink+0x2e0/0x4f4 [ 71.996066][ T5184] do_unlinkat+0x318/0x624 [ 71.996805][ T5184] __arm64_sys_unlinkat+0xe0/0xfc [ 71.997652][ T5184] invoke_syscall+0x98/0x28c [ 71.998488][ T5184] el0_svc_common+0x13c/0x258 [ 71.999383][ T5184] do_el0_svc+0x5c/0x140 [ 72.000128][ T5184] el0_svc+0x78/0x1d0 [ 72.000866][ T5184] el0t_64_sync_handler+0xcc/0xe4 [ 72.001781][ T5184] el0t_64_sync+0x1a0/0x1a4 [ 72.164628][ T4172] Bluetooth: hci0: command 0x040f tx timeout [ 72.176088][ T5205] set_capacity_and_notify: 6 callbacks suppressed [ 72.176095][ T5205] loop0: detected capacity change from 0 to 32768 [ 72.230883][ T5205] BTRFS: device fsid c9fe44da-de57-406a-8241-57ec7d4412cf devid 1 transid 8 /dev/loop0 scanned by syz.0.31 (5205) [ 72.235732][ T5205] BTRFS info (device loop0): using crc32c (crc32c-generic) checksum algorithm [ 72.237189][ T5205] BTRFS info (device loop0): using free space tree [ 72.238232][ T5205] BTRFS info (device loop0): has skinny extents [ 72.246625][ T5205] BTRFS info (device loop0): enabling ssd optimizations [ 72.250798][ T5205] FAULT_INJECTION: forcing a failure. [ 72.250798][ T5205] name failslab, interval 1, probability 0, space 0, times 0 [ 72.252928][ T5205] CPU: 0 PID: 5205 Comm: syz.0.31 Tainted: G W syzkaller #0 [ 72.254287][ T5205] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/02/2026 [ 72.255996][ T5205] Call trace: [ 72.256608][ T5205] dump_backtrace+0x0/0x458 [ 72.257425][ T5205] show_stack+0x2c/0x3c [ 72.258199][ T5205] __dump_stack+0x30/0x40 [ 72.258897][ T5205] dump_stack_lvl+0xf4/0x15c [ 72.259703][ T5205] dump_stack+0x1c/0x5c [ 72.260420][ T5205] should_fail+0x3c8/0x520 [ 72.261117][ T5205] __should_failslab+0xbc/0x10c [ 72.261893][ T5205] should_failslab+0x10/0x28 [ 72.262678][ T5205] slab_pre_alloc_hook+0x64/0xe8 [ 72.263430][ T5205] kmem_cache_alloc_trace+0x98/0x3f0 [ 72.264295][ T5205] btrfs_delete_delayed_dir_index+0x22c/0x574 [ 72.265274][ T5205] __btrfs_unlink_inode+0x34c/0xab8 [ 72.266100][ T5205] btrfs_unlink+0x10c/0x25c [ 72.266825][ T5205] vfs_unlink+0x2e0/0x4f4 [ 72.267517][ T5205] do_unlinkat+0x318/0x624 [ 72.268304][ T5205] __arm64_sys_unlinkat+0xe0/0xfc [ 72.269211][ T5205] invoke_syscall+0x98/0x28c [ 72.269961][ T5205] el0_svc_common+0x13c/0x258 [ 72.270659][ T5205] do_el0_svc+0x5c/0x140 [ 72.271361][ T5205] el0_svc+0x78/0x1d0 [ 72.271992][ T5205] el0t_64_sync_handler+0xcc/0xe4 [ 72.272840][ T5205] el0t_64_sync+0x1a0/0x1a4 [ 72.275854][ T5205] ------------[ cut here ]------------ [ 72.276844][ T5205] WARNING: CPU: 0 PID: 5205 at fs/btrfs/inode.c:4182 __btrfs_unlink_inode+0x8d8/0xab8 [ 72.278459][ T5205] Modules linked in: [ 72.279084][ T5205] CPU: 0 PID: 5205 Comm: syz.0.31 Tainted: G W syzkaller #0 [ 72.280460][ T5205] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/02/2026 [ 72.282114][ T5205] pstate: 62400005 (nZCv daif +PAN -UAO +TCO -DIT -SSBS BTYPE=--) [ 72.283321][ T5205] pc : __btrfs_unlink_inode+0x8d8/0xab8 [ 72.284117][ T5205] lr : __btrfs_unlink_inode+0x8d8/0xab8 [ 72.285025][ T5205] sp : ffff8000214f7a80 [ 72.285716][ T5205] x29: ffff8000214f7b10 x28: 0000000000000104 x27: ffff0000ecdfec10 [ 72.287056][ T5205] x26: 0000000000000100 x25: 00000000fffffff4 x24: ffff0000da179790 [ 72.288414][ T5205] x23: ffff0000de88e9a0 x22: ffff0000ee614000 x21: 1fffe0001bd11d3f [ 72.289769][ T5205] x20: ffff0000de88e9f8 x19: dfff800000000000 x18: 0000000000000000 [ 72.291222][ T5205] x17: 0000000000000000 x16: ffff80001134e478 x15: 0000000000000000 [ 72.292745][ T5205] x14: 0000000000000001 x13: 1fffe000341cebab x12: 0000000000000000 [ 72.294314][ T5205] x11: ff8080000830061c x10: 0000000000000000 x9 : 68322386d67ee700 [ 72.295818][ T5205] x8 : 68322386d67ee700 x7 : 0000000000000001 x6 : 0000000000000001 [ 72.297195][ T5205] x5 : ffff8000214f7398 x4 : ffff80001446f500 x3 : ffff80000850f688 [ 72.298541][ T5205] x2 : 0000000000000001 x1 : 0000000100000000 x0 : 0000000000000026 [ 72.300017][ T5205] Call trace: [ 72.300580][ T5205] __btrfs_unlink_inode+0x8d8/0xab8 [ 72.301511][ T5205] btrfs_unlink+0x10c/0x25c [ 72.302259][ T5205] vfs_unlink+0x2e0/0x4f4 [ 72.302954][ T5205] do_unlinkat+0x318/0x624 [ 72.303740][ T5205] __arm64_sys_unlinkat+0xe0/0xfc [ 72.304529][ T5205] invoke_syscall+0x98/0x28c [ 72.305342][ T5205] el0_svc_common+0x13c/0x258 [ 72.306114][ T5205] do_el0_svc+0x5c/0x140 [ 72.306835][ T5205] el0_svc+0x78/0x1d0 [ 72.307462][ T5205] el0t_64_sync_handler+0xcc/0xe4 [ 72.308260][ T5205] el0t_64_sync+0x1a0/0x1a4 [ 72.309002][ T5205] irq event stamp: 79460 [ 72.309738][ T5205] hardirqs last enabled at (79459): [] __up_console_sem+0xb4/0xfc [ 72.311285][ T5205] hardirqs last disabled at (79460): [] el1_dbg+0x24/0x80 [ 72.312707][ T5205] softirqs last enabled at (79440): [] handle_softirqs+0xa70/0xc14 [ 72.314312][ T5205] softirqs last disabled at (79403): [] __irq_exit_rcu+0x240/0x434 [ 72.315962][ T5205] ---[ end trace 149d0c2dff8b1a83 ]--- [ 72.319014][ T5205] BTRFS: error (device loop0) in __btrfs_unlink_inode:4182: errno=-12 Out of memory [ 72.320735][ T5205] BTRFS info (device loop0): forced readonly [ 72.492580][ T5227] loop0: detected capacity change from 0 to 32768 [ 72.527466][ T5227] BTRFS: device fsid c9fe44da-de57-406a-8241-57ec7d4412cf devid 1 transid 8 /dev/loop0 scanned by syz.0.32 (5227) [ 72.530994][ T5227] BTRFS info (device loop0): using crc32c (crc32c-generic) checksum algorithm [ 72.532487][ T5227] BTRFS info (device loop0): using free space tree [ 72.533494][ T5227] BTRFS info (device loop0): has skinny extents [ 72.541210][ T5227] BTRFS info (device loop0): enabling ssd optimizations [ 72.545930][ T5227] FAULT_INJECTION: forcing a failure. [ 72.545930][ T5227] name failslab, interval 1, probability 0, space 0, times 0 [ 72.547940][ T5227] CPU: 1 PID: 5227 Comm: syz.0.32 Tainted: G W syzkaller #0 [ 72.549185][ T5227] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/02/2026 [ 72.550750][ T5227] Call trace: [ 72.551284][ T5227] dump_backtrace+0x0/0x458 [ 72.552062][ T5227] show_stack+0x2c/0x3c [ 72.552756][ T5227] __dump_stack+0x30/0x40 [ 72.553505][ T5227] dump_stack_lvl+0xf4/0x15c [ 72.554224][ T5227] dump_stack+0x1c/0x5c [ 72.554868][ T5227] should_fail+0x3c8/0x520 [ 72.555614][ T5227] __should_failslab+0xbc/0x10c [ 72.556428][ T5227] should_failslab+0x10/0x28 [ 72.557164][ T5227] slab_pre_alloc_hook+0x64/0xe8 [ 72.558001][ T5227] kmem_cache_alloc_trace+0x98/0x3f0 [ 72.558854][ T5227] btrfs_delete_delayed_dir_index+0x22c/0x574 [ 72.559856][ T5227] __btrfs_unlink_inode+0x34c/0xab8 [ 72.560720][ T5227] btrfs_unlink+0x10c/0x25c [ 72.561447][ T5227] vfs_unlink+0x2e0/0x4f4 [ 72.562098][ T5227] do_unlinkat+0x318/0x624 [ 72.562827][ T5227] __arm64_sys_unlinkat+0xe0/0xfc [ 72.563606][ T5227] invoke_syscall+0x98/0x28c [ 72.564322][ T5227] el0_svc_common+0x13c/0x258 [ 72.565023][ T5227] do_el0_svc+0x5c/0x140 [ 72.565732][ T5227] el0_svc+0x78/0x1d0 [ 72.566366][ T5227] el0t_64_sync_handler+0xcc/0xe4 [ 72.567145][ T5227] el0t_64_sync+0x1a0/0x1a4 [ 72.570161][ T5227] ------------[ cut here ]------------ [ 72.571104][ T5227] WARNING: CPU: 1 PID: 5227 at fs/btrfs/inode.c:4182 __btrfs_unlink_inode+0x8d8/0xab8 [ 72.572586][ T5227] Modules linked in: [ 72.573231][ T5227] CPU: 1 PID: 5227 Comm: syz.0.32 Tainted: G W syzkaller #0 [ 72.574628][ T5227] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/02/2026 [ 72.576346][ T5227] pstate: 62400005 (nZCv daif +PAN -UAO +TCO -DIT -SSBS BTYPE=--) [ 72.577638][ T5227] pc : __btrfs_unlink_inode+0x8d8/0xab8 [ 72.578582][ T5227] lr : __btrfs_unlink_inode+0x8d8/0xab8 [ 72.579505][ T5227] sp : ffff800021727a80 [ 72.580127][ T5227] x29: ffff800021727b10 x28: 0000000000000104 x27: ffff0000ece28410 [ 72.581591][ T5227] x26: 0000000000000100 x25: 00000000fffffff4 x24: ffff0000da7cd0b0 [ 72.582970][ T5227] x23: ffff0000e24532c0 x22: ffff0000ea3ac000 x21: 1fffe0001c48a663 [ 72.584392][ T5227] x20: ffff0000e2453318 x19: dfff800000000000 x18: 0000000000000000 [ 72.585746][ T5227] x17: 0000000000000000 x16: ffff80001134e478 x15: 0000000000000000 [ 72.587354][ T5227] x14: 0000000000000001 x13: 1fffe000341d2dab x12: 0000000000000000 [ 72.588937][ T5227] x11: ff8080000830061c x10: 0000000000000000 x9 : 8192338ff50e5800 [ 72.590488][ T5227] x8 : 8192338ff50e5800 x7 : 0000000000000001 x6 : 0000000000000001 [ 72.591919][ T5227] x5 : ffff800021727398 x4 : ffff80001446f500 x3 : ffff80000850f688 [ 72.593348][ T5227] x2 : 0000000000000001 x1 : 0000000100000000 x0 : 0000000000000026 [ 72.594705][ T5227] Call trace: [ 72.595227][ T5227] __btrfs_unlink_inode+0x8d8/0xab8 [ 72.596109][ T5227] btrfs_unlink+0x10c/0x25c [ 72.596817][ T5227] vfs_unlink+0x2e0/0x4f4 [ 72.597527][ T5227] do_unlinkat+0x318/0x624 [ 72.598265][ T5227] __arm64_sys_unlinkat+0xe0/0xfc [ 72.599094][ T5227] invoke_syscall+0x98/0x28c [ 72.599893][ T5227] el0_svc_common+0x13c/0x258 [ 72.600672][ T5227] do_el0_svc+0x5c/0x140 [ 72.601403][ T5227] el0_svc+0x78/0x1d0 [ 72.602090][ T5227] el0t_64_sync_handler+0xcc/0xe4 [ 72.602923][ T5227] el0t_64_sync+0x1a0/0x1a4 [ 72.603695][ T5227] irq event stamp: 78868 [ 72.604466][ T5227] hardirqs last enabled at (78867): [] __up_console_sem+0xb4/0xfc [ 72.606185][ T5227] hardirqs last disabled at (78868): [] el1_dbg+0x24/0x80 [ 72.607767][ T5227] softirqs last enabled at (78848): [] handle_softirqs+0xa70/0xc14 [ 72.609376][ T5227] softirqs last disabled at (78607): [] __irq_exit_rcu+0x240/0x434 [ 72.610905][ T5227] ---[ end trace 149d0c2dff8b1a84 ]--- [ 72.613774][ T5227] BTRFS: error (device loop0) in __btrfs_unlink_inode:4182: errno=-12 Out of memory [ 72.615394][ T5227] BTRFS info (device loop0): forced readonly [ 72.779296][ T5249] loop0: detected capacity change from 0 to 32768 [ 72.831161][ T5249] BTRFS: device fsid c9fe44da-de57-406a-8241-57ec7d4412cf devid 1 transid 8 /dev/loop0 scanned by syz.0.33 (5249) [ 72.835014][ T5249] BTRFS info (device loop0): using crc32c (crc32c-generic) checksum algorithm [ 72.836437][ T5249] BTRFS info (device loop0): using free space tree [ 72.837446][ T5249] BTRFS info (device loop0): has skinny extents [ 72.845045][ T5249] BTRFS info (device loop0): enabling ssd optimizations [ 72.848961][ T5249] FAULT_INJECTION: forcing a failure. [ 72.848961][ T5249] name failslab, interval 1, probability 0, space 0, times 0 [ 72.851110][ T5249] CPU: 1 PID: 5249 Comm: syz.0.33 Tainted: G W syzkaller #0 [ 72.852486][ T5249] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/02/2026 [ 72.854247][ T5249] Call trace: [ 72.854794][ T5249] dump_backtrace+0x0/0x458 [ 72.855587][ T5249] show_stack+0x2c/0x3c [ 72.856256][ T5249] __dump_stack+0x30/0x40 [ 72.856986][ T5249] dump_stack_lvl+0xf4/0x15c [ 72.857816][ T5249] dump_stack+0x1c/0x5c [ 72.858532][ T5249] should_fail+0x3c8/0x520 [ 72.859295][ T5249] __should_failslab+0xbc/0x10c [ 72.860094][ T5249] should_failslab+0x10/0x28 [ 72.860852][ T5249] slab_pre_alloc_hook+0x64/0xe8 [ 72.861832][ T5249] kmem_cache_alloc_trace+0x98/0x3f0 [ 72.862736][ T5249] btrfs_delete_delayed_dir_index+0x22c/0x574 [ 72.863762][ T5249] __btrfs_unlink_inode+0x34c/0xab8 [ 72.864766][ T5249] btrfs_unlink+0x10c/0x25c [ 72.865593][ T5249] vfs_unlink+0x2e0/0x4f4 [ 72.866364][ T5249] do_unlinkat+0x318/0x624 [ 72.867171][ T5249] __arm64_sys_unlinkat+0xe0/0xfc [ 72.868102][ T5249] invoke_syscall+0x98/0x28c [ 72.868935][ T5249] el0_svc_common+0x13c/0x258 [ 72.869770][ T5249] do_el0_svc+0x5c/0x140 [ 72.870476][ T5249] el0_svc+0x78/0x1d0 [ 72.871193][ T5249] el0t_64_sync_handler+0xcc/0xe4 [ 72.872093][ T5249] el0t_64_sync+0x1a0/0x1a4 [ 72.874518][ T5249] ------------[ cut here ]------------ [ 72.875514][ T5249] WARNING: CPU: 0 PID: 5249 at fs/btrfs/inode.c:4182 __btrfs_unlink_inode+0x8d8/0xab8 [ 72.877008][ T5249] Modules linked in: [ 72.877619][ T5249] CPU: 0 PID: 5249 Comm: syz.0.33 Tainted: G W syzkaller #0 [ 72.878997][ T5249] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/02/2026 [ 72.880518][ T5249] pstate: 62400005 (nZCv daif +PAN -UAO +TCO -DIT -SSBS BTYPE=--) [ 72.881713][ T5249] pc : __btrfs_unlink_inode+0x8d8/0xab8 [ 72.882604][ T5249] lr : __btrfs_unlink_inode+0x8d8/0xab8 [ 72.883603][ T5249] sp : ffff800021897a80 [ 72.884355][ T5249] x29: ffff800021897b10 x28: 0000000000000104 x27: ffff0000ece28010 [ 72.885809][ T5249] x26: 0000000000000100 x25: 00000000fffffff4 x24: ffff0000c2363370 [ 72.887266][ T5249] x23: ffff0000e2453160 x22: ffff0000eeacc000 x21: 1fffe0001c48a637 [ 72.888651][ T5249] x20: ffff0000e24531b8 x19: dfff800000000000 x18: 0000000000000000 [ 72.889995][ T5249] x17: 0000000000000000 x16: ffff8000082c63e0 x15: 0000000000000000 [ 72.891368][ T5249] x14: 0000000000000001 x13: 1ffff00004312e70 x12: 0000000000000000 [ 72.892810][ T5249] x11: ff8080000830061c x10: 0000000000000000 x9 : b6287e29d14cb300 [ 72.894214][ T5249] x8 : b6287e29d14cb300 x7 : 0000000000000001 x6 : 0000000000000001 [ 72.895623][ T5249] x5 : ffff800021897398 x4 : ffff80001446f500 x3 : ffff800008307f44 [ 72.897297][ T5249] x2 : 0000000000000001 x1 : 0000000100000000 x0 : 0000000000000026 [ 72.898933][ T5249] Call trace: [ 72.899556][ T5249] __btrfs_unlink_inode+0x8d8/0xab8 [ 72.900450][ T5249] btrfs_unlink+0x10c/0x25c [ 72.901219][ T5249] vfs_unlink+0x2e0/0x4f4 [ 72.901996][ T5249] do_unlinkat+0x318/0x624 [ 72.902756][ T5249] __arm64_sys_unlinkat+0xe0/0xfc [ 72.903543][ T5249] invoke_syscall+0x98/0x28c [ 72.904263][ T5249] el0_svc_common+0x13c/0x258 [ 72.905052][ T5249] do_el0_svc+0x5c/0x140 [ 72.905749][ T5249] el0_svc+0x78/0x1d0 [ 72.906383][ T5249] el0t_64_sync_handler+0xcc/0xe4 [ 72.907236][ T5249] el0t_64_sync+0x1a0/0x1a4 [ 72.907993][ T5249] irq event stamp: 78964 [ 72.908694][ T5249] hardirqs last enabled at (78963): [] __up_console_sem+0xb4/0xfc [ 72.910213][ T5249] hardirqs last disabled at (78964): [] el1_dbg+0x24/0x80 [ 72.911695][ T5249] softirqs last enabled at (78944): [] handle_softirqs+0xa70/0xc14 [ 72.913377][ T5249] softirqs last disabled at (78907): [] __irq_exit_rcu+0x240/0x434 [ 72.914889][ T5249] ---[ end trace 149d0c2dff8b1a85 ]--- [ 72.920403][ T5249] BTRFS: error (device loop0) in __btrfs_unlink_inode:4182: errno=-12 Out of memory [ 72.921981][ T5249] BTRFS info (device loop0): forced readonly [ 73.071395][ T5274] loop0: detected capacity change from 0 to 32768 [ 73.165832][ T5274] BTRFS: device fsid c9fe44da-de57-406a-8241-57ec7d4412cf devid 1 transid 8 /dev/loop0 scanned by syz.0.34 (5274) [ 73.168803][ T5274] BTRFS info (device loop0): using crc32c (crc32c-generic) checksum algorithm [ 73.170137][ T5274] BTRFS info (device loop0): using free space tree [ 73.171144][ T5274] BTRFS info (device loop0): has skinny extents [ 73.178574][ T5274] BTRFS info (device loop0): enabling ssd optimizations [ 73.183565][ T5274] FAULT_INJECTION: forcing a failure. [ 73.183565][ T5274] name failslab, interval 1, probability 0, space 0, times 0 [ 73.185617][ T5274] CPU: 1 PID: 5274 Comm: syz.0.34 Tainted: G W syzkaller #0 [ 73.186971][ T5274] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/02/2026 [ 73.188582][ T5274] Call trace: [ 73.189141][ T5274] dump_backtrace+0x0/0x458 [ 73.189854][ T5274] show_stack+0x2c/0x3c [ 73.190518][ T5274] __dump_stack+0x30/0x40 [ 73.191248][ T5274] dump_stack_lvl+0xf4/0x15c [ 73.192014][ T5274] dump_stack+0x1c/0x5c [ 73.192697][ T5274] should_fail+0x3c8/0x520 [ 73.193413][ T5274] __should_failslab+0xbc/0x10c [ 73.194206][ T5274] should_failslab+0x10/0x28 [ 73.194941][ T5274] slab_pre_alloc_hook+0x64/0xe8 [ 73.195684][ T5274] kmem_cache_alloc+0x94/0x3d8 [ 73.196521][ T5274] btrfs_alloc_path+0x5c/0x68 [ 73.197292][ T5274] __btrfs_unlink_inode+0x1e0/0xab8 [ 73.198149][ T5274] btrfs_unlink+0x10c/0x25c [ 73.198950][ T5274] vfs_unlink+0x2e0/0x4f4 [ 73.199691][ T5274] do_unlinkat+0x318/0x624 [ 73.200386][ T5274] __arm64_sys_unlinkat+0xe0/0xfc [ 73.201168][ T5274] invoke_syscall+0x98/0x28c [ 73.201908][ T5274] el0_svc_common+0x13c/0x258 [ 73.202691][ T5274] do_el0_svc+0x5c/0x140 [ 73.203381][ T5274] el0_svc+0x78/0x1d0 [ 73.204118][ T5274] el0t_64_sync_handler+0xcc/0xe4 [ 73.205010][ T5274] el0t_64_sync+0x1a0/0x1a4 [ 73.260365][ T4709] BTRFS: device fsid c9fe44da-de57-406a-8241-57ec7d4412cf devid 1 transid 10 /dev/loop0 scanned by udevd (4709) [ 73.356760][ T5295] loop0: detected capacity change from 0 to 32768 [ 73.362232][ T5295] BTRFS info (device loop0): using crc32c (crc32c-generic) checksum algorithm [ 73.363728][ T5295] BTRFS info (device loop0): using free space tree [ 73.365044][ T5295] BTRFS info (device loop0): has skinny extents [ 73.385230][ T5295] BTRFS info (device loop0): enabling ssd optimizations [ 73.389296][ T5295] FAULT_INJECTION: forcing a failure. [ 73.389296][ T5295] name failslab, interval 1, probability 0, space 0, times 0 [ 73.391369][ T5295] CPU: 1 PID: 5295 Comm: syz.0.35 Tainted: G W syzkaller #0 [ 73.392704][ T5295] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/02/2026 [ 73.394336][ T5295] Call trace: [ 73.394935][ T5295] dump_backtrace+0x0/0x458 [ 73.395821][ T5295] show_stack+0x2c/0x3c [ 73.396570][ T5295] __dump_stack+0x30/0x40 [ 73.397391][ T5295] dump_stack_lvl+0xf4/0x15c [ 73.398187][ T5295] dump_stack+0x1c/0x5c [ 73.398917][ T5295] should_fail+0x3c8/0x520 [ 73.399737][ T5295] __should_failslab+0xbc/0x10c [ 73.400714][ T5295] should_failslab+0x10/0x28 [ 73.401591][ T5295] slab_pre_alloc_hook+0x64/0xe8 [ 73.402443][ T5295] kmem_cache_alloc_trace+0x98/0x3f0 [ 73.403503][ T5295] btrfs_delete_delayed_dir_index+0x22c/0x574 [ 73.404720][ T5295] __btrfs_unlink_inode+0x34c/0xab8 [ 73.405705][ T5295] btrfs_unlink+0x10c/0x25c [ 73.406567][ T5295] vfs_unlink+0x2e0/0x4f4 [ 73.407410][ T5295] do_unlinkat+0x318/0x624 [ 73.408137][ T5295] __arm64_sys_unlinkat+0xe0/0xfc [ 73.408991][ T5295] invoke_syscall+0x98/0x28c [ 73.409795][ T5295] el0_svc_common+0x13c/0x258 [ 73.410605][ T5295] do_el0_svc+0x5c/0x140 [ 73.411304][ T5295] el0_svc+0x78/0x1d0 [ 73.411977][ T5295] el0t_64_sync_handler+0xcc/0xe4 [ 73.412898][ T5295] el0t_64_sync+0x1a0/0x1a4 [ 73.416116][ T5295] ------------[ cut here ]------------ [ 73.417087][ T5295] WARNING: CPU: 1 PID: 5295 at fs/btrfs/inode.c:4182 __btrfs_unlink_inode+0x8d8/0xab8 [ 73.418739][ T5295] Modules linked in: [ 73.419437][ T5295] CPU: 1 PID: 5295 Comm: syz.0.35 Tainted: G W syzkaller #0 [ 73.420929][ T5295] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/02/2026 [ 73.422496][ T5295] pstate: 62400005 (nZCv daif +PAN -UAO +TCO -DIT -SSBS BTYPE=--) [ 73.423784][ T5295] pc : __btrfs_unlink_inode+0x8d8/0xab8 [ 73.424832][ T5295] lr : __btrfs_unlink_inode+0x8d8/0xab8 [ 73.425848][ T5295] sp : ffff800021c17a80 [ 73.426582][ T5295] x29: ffff800021c17b10 x28: 0000000000000104 x27: ffff0000ece29810 [ 73.427993][ T5295] x26: 0000000000000100 x25: 00000000fffffff4 x24: ffff0000cf300c60 [ 73.429340][ T5295] x23: ffff0000e2453a50 x22: ffff0000ec0f4000 x21: 1fffe0001c48a755 [ 73.430719][ T5295] x20: ffff0000e2453aa8 x19: dfff800000000000 x18: 0000000000000000 [ 73.432143][ T5295] x17: 0000000000000000 x16: ffff80001134e478 x15: 0000000000000000 [ 73.433738][ T5295] x14: 0000000000000001 x13: 1fffe000341d2dab x12: 0000000000000000 [ 73.435096][ T5295] x11: ff8080000830061c x10: 0000000000000000 x9 : fd496c19d632af00 [ 73.436512][ T5295] x8 : fd496c19d632af00 x7 : 0000000000000001 x6 : 0000000000000001 [ 73.437910][ T5295] x5 : ffff800021c17398 x4 : ffff80001446f500 x3 : ffff80000850f688 [ 73.439388][ T5295] x2 : 0000000000000001 x1 : 0000000100000000 x0 : 0000000000000026 [ 73.440739][ T5295] Call trace: [ 73.441281][ T5295] __btrfs_unlink_inode+0x8d8/0xab8 [ 73.442163][ T5295] btrfs_unlink+0x10c/0x25c [ 73.442944][ T5295] vfs_unlink+0x2e0/0x4f4 [ 73.443692][ T5295] do_unlinkat+0x318/0x624 [ 73.444482][ T5295] __arm64_sys_unlinkat+0xe0/0xfc [ 73.445325][ T5295] invoke_syscall+0x98/0x28c [ 73.446119][ T5295] el0_svc_common+0x13c/0x258 [ 73.446937][ T5295] do_el0_svc+0x5c/0x140 [ 73.447644][ T5295] el0_svc+0x78/0x1d0 [ 73.448277][ T5295] el0t_64_sync_handler+0xcc/0xe4 [ 73.449129][ T5295] el0t_64_sync+0x1a0/0x1a4 [ 73.449896][ T5295] irq event stamp: 78858 [ 73.450587][ T5295] hardirqs last enabled at (78857): [] __up_console_sem+0xb4/0xfc [ 73.452293][ T5295] hardirqs last disabled at (78858): [] el1_dbg+0x24/0x80 [ 73.453894][ T5295] softirqs last enabled at (78838): [] handle_softirqs+0xa70/0xc14 [ 73.455664][ T5295] softirqs last disabled at (78799): [] __irq_exit_rcu+0x240/0x434 [ 73.457275][ T5295] ---[ end trace 149d0c2dff8b1a86 ]--- [ 73.461525][ T5295] BTRFS: error (device loop0) in __btrfs_unlink_inode:4182: errno=-12 Out of memory [ 73.463100][ T5295] BTRFS info (device loop0): forced readonly [ 73.644266][ T5318] loop0: detected capacity change from 0 to 32768 [ 73.699544][ T5318] BTRFS: device fsid c9fe44da-de57-406a-8241-57ec7d4412cf devid 1 transid 8 /dev/loop0 scanned by syz.0.36 (5318) [ 73.702904][ T5318] BTRFS info (device loop0): using crc32c (crc32c-generic) checksum algorithm [ 73.704350][ T5318] BTRFS info (device loop0): using free space tree [ 73.707177][ T5318] BTRFS info (device loop0): has skinny extents [ 73.717588][ T5318] BTRFS info (device loop0): enabling ssd optimizations [ 73.721509][ T5318] FAULT_INJECTION: forcing a failure. [ 73.721509][ T5318] name failslab, interval 1, probability 0, space 0, times 0 [ 73.723641][ T5318] CPU: 0 PID: 5318 Comm: syz.0.36 Tainted: G W syzkaller #0 [ 73.725185][ T5318] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/02/2026 [ 73.727011][ T5318] Call trace: [ 73.727603][ T5318] dump_backtrace+0x0/0x458 [ 73.728379][ T5318] show_stack+0x2c/0x3c [ 73.729097][ T5318] __dump_stack+0x30/0x40 [ 73.729879][ T5318] dump_stack_lvl+0xf4/0x15c [ 73.730709][ T5318] dump_stack+0x1c/0x5c [ 73.731506][ T5318] should_fail+0x3c8/0x520 [ 73.732389][ T5318] __should_failslab+0xbc/0x10c [ 73.733267][ T5318] should_failslab+0x10/0x28 [ 73.734024][ T5318] slab_pre_alloc_hook+0x64/0xe8 [ 73.734856][ T5318] kmem_cache_alloc_trace+0x98/0x3f0 [ 73.735746][ T5318] btrfs_delete_delayed_dir_index+0x22c/0x574 [ 73.736965][ T5318] __btrfs_unlink_inode+0x34c/0xab8 [ 73.737889][ T5318] btrfs_unlink+0x10c/0x25c [ 73.738724][ T5318] vfs_unlink+0x2e0/0x4f4 [ 73.739551][ T5318] do_unlinkat+0x318/0x624 [ 73.740352][ T5318] __arm64_sys_unlinkat+0xe0/0xfc [ 73.741297][ T5318] invoke_syscall+0x98/0x28c [ 73.742116][ T5318] el0_svc_common+0x13c/0x258 [ 73.742933][ T5318] do_el0_svc+0x5c/0x140 [ 73.743682][ T5318] el0_svc+0x78/0x1d0 [ 73.744362][ T5318] el0t_64_sync_handler+0xcc/0xe4 [ 73.745336][ T5318] el0t_64_sync+0x1a0/0x1a4 [ 73.748719][ T5318] ------------[ cut here ]------------ [ 73.749712][ T5318] WARNING: CPU: 0 PID: 5318 at fs/btrfs/inode.c:4182 __btrfs_unlink_inode+0x8d8/0xab8 [ 73.751245][ T5318] Modules linked in: [ 73.751935][ T5318] CPU: 0 PID: 5318 Comm: syz.0.36 Tainted: G W syzkaller #0 [ 73.753276][ T5318] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/02/2026 [ 73.754919][ T5318] pstate: 62400005 (nZCv daif +PAN -UAO +TCO -DIT -SSBS BTYPE=--) [ 73.756276][ T5318] pc : __btrfs_unlink_inode+0x8d8/0xab8 [ 73.757287][ T5318] lr : __btrfs_unlink_inode+0x8d8/0xab8 [ 73.758247][ T5318] sp : ffff800021c77a80 [ 73.759002][ T5318] x29: ffff800021c77b10 x28: 0000000000000104 x27: ffff0000ecdfd810 [ 73.760380][ T5318] x26: 0000000000000100 x25: 00000000fffffff4 x24: ffff0000cb97b0b0 [ 73.761730][ T5318] x23: ffff0000de88eb00 x22: ffff0000ed266000 x21: 1fffe0001bd11d6b [ 73.763112][ T5318] x20: ffff0000de88eb58 x19: dfff800000000000 x18: 0000000000000000 [ 73.764652][ T5318] x17: 0000000000000000 x16: ffff80001134e478 x15: 0000000000000000 [ 73.766071][ T5318] x14: 0000000000000001 x13: 1fffe000341cebab x12: 0000000000000000 [ 73.767430][ T5318] x11: ff8080000830061c x10: 0000000000000000 x9 : 777b517565c6b400 [ 73.768864][ T5318] x8 : 777b517565c6b400 x7 : 0000000000000001 x6 : 0000000000000001 [ 73.770369][ T5318] x5 : ffff800021c77398 x4 : ffff80001446f500 x3 : ffff80000850f688 [ 73.771766][ T5318] x2 : 0000000000000001 x1 : 0000000100000000 x0 : 0000000000000026 [ 73.773239][ T5318] Call trace: [ 73.773885][ T5318] __btrfs_unlink_inode+0x8d8/0xab8 [ 73.774845][ T5318] btrfs_unlink+0x10c/0x25c [ 73.775649][ T5318] vfs_unlink+0x2e0/0x4f4 [ 73.776432][ T5318] do_unlinkat+0x318/0x624 [ 73.777175][ T5318] __arm64_sys_unlinkat+0xe0/0xfc [ 73.778045][ T5318] invoke_syscall+0x98/0x28c [ 73.778851][ T5318] el0_svc_common+0x13c/0x258 [ 73.779699][ T5318] do_el0_svc+0x5c/0x140 [ 73.780449][ T5318] el0_svc+0x78/0x1d0 [ 73.781151][ T5318] el0t_64_sync_handler+0xcc/0xe4 [ 73.782072][ T5318] el0t_64_sync+0x1a0/0x1a4 [ 73.782869][ T5318] irq event stamp: 78806 [ 73.783589][ T5318] hardirqs last enabled at (78805): [] __up_console_sem+0xb4/0xfc [ 73.785251][ T5318] hardirqs last disabled at (78806): [] el1_dbg+0x24/0x80 [ 73.786788][ T5318] softirqs last enabled at (78786): [] handle_softirqs+0xa70/0xc14 [ 73.788446][ T5318] softirqs last disabled at (78735): [] __irq_exit_rcu+0x240/0x434 [ 73.790253][ T5318] ---[ end trace 149d0c2dff8b1a87 ]--- [ 73.793749][ T5318] BTRFS: error (device loop0) in __btrfs_unlink_inode:4182: errno=-12 Out of memory [ 73.795381][ T5318] BTRFS info (device loop0): forced readonly [ 73.964015][ T5340] loop0: detected capacity change from 0 to 32768 [ 74.005785][ T5340] BTRFS: device fsid c9fe44da-de57-406a-8241-57ec7d4412cf devid 1 transid 8 /dev/loop0 scanned by syz.0.37 (5340) [ 74.009549][ T5340] BTRFS info (device loop0): using crc32c (crc32c-generic) checksum algorithm [ 74.011257][ T5340] BTRFS info (device loop0): using free space tree [ 74.012370][ T5340] BTRFS info (device loop0): has skinny extents [ 74.022877][ T5340] BTRFS info (device loop0): enabling ssd optimizations [ 74.034114][ T5340] FAULT_INJECTION: forcing a failure. [ 74.034114][ T5340] name failslab, interval 1, probability 0, space 0, times 0 [ 74.036767][ T5340] CPU: 1 PID: 5340 Comm: syz.0.37 Tainted: G W syzkaller #0 [ 74.038301][ T5340] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/02/2026 [ 74.039995][ T5340] Call trace: [ 74.040528][ T5340] dump_backtrace+0x0/0x458 [ 74.041252][ T5340] show_stack+0x2c/0x3c [ 74.041948][ T5340] __dump_stack+0x30/0x40 [ 74.042679][ T5340] dump_stack_lvl+0xf4/0x15c [ 74.043636][ T5340] dump_stack+0x1c/0x5c [ 74.044456][ T5340] should_fail+0x3c8/0x520 [ 74.045312][ T5340] __should_failslab+0xbc/0x10c [ 74.046286][ T5340] should_failslab+0x10/0x28 [ 74.047153][ T5340] slab_pre_alloc_hook+0x64/0xe8 [ 74.047954][ T5340] kmem_cache_alloc_trace+0x98/0x3f0 [ 74.048904][ T5340] btrfs_delete_delayed_dir_index+0x22c/0x574 [ 74.049987][ T5340] __btrfs_unlink_inode+0x34c/0xab8 [ 74.050874][ T5340] btrfs_unlink+0x10c/0x25c [ 74.051721][ T5340] vfs_unlink+0x2e0/0x4f4 [ 74.052479][ T5340] do_unlinkat+0x318/0x624 [ 74.053236][ T5340] __arm64_sys_unlinkat+0xe0/0xfc [ 74.054240][ T5340] invoke_syscall+0x98/0x28c [ 74.055038][ T5340] el0_svc_common+0x13c/0x258 [ 74.055915][ T5340] do_el0_svc+0x5c/0x140 [ 74.056723][ T5340] el0_svc+0x78/0x1d0 [ 74.057424][ T5340] el0t_64_sync_handler+0xcc/0xe4 [ 74.058365][ T5340] el0t_64_sync+0x1a0/0x1a4 [ 74.061508][ T5340] ------------[ cut here ]------------ [ 74.062536][ T5340] WARNING: CPU: 1 PID: 5340 at fs/btrfs/inode.c:4182 __btrfs_unlink_inode+0x8d8/0xab8 [ 74.063984][ T5340] Modules linked in: [ 74.064675][ T5340] CPU: 1 PID: 5340 Comm: syz.0.37 Tainted: G W syzkaller #0 [ 74.066205][ T5340] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/02/2026 [ 74.067945][ T5340] pstate: 62400005 (nZCv daif +PAN -UAO +TCO -DIT -SSBS BTYPE=--) [ 74.069324][ T5340] pc : __btrfs_unlink_inode+0x8d8/0xab8 [ 74.070277][ T5340] lr : __btrfs_unlink_inode+0x8d8/0xab8 [ 74.071257][ T5340] sp : ffff800021ae7a80 [ 74.072023][ T5340] x29: ffff800021ae7b10 x28: 0000000000000104 x27: ffff0000ece29c10 [ 74.073409][ T5340] x26: 0000000000000100 x25: 00000000fffffff4 x24: ffff0000c16b58f0 [ 74.074788][ T5340] x23: ffff0000e2453b00 x22: ffff0000e7b7c000 x21: 1fffe0001c48a76b [ 74.076148][ T5340] x20: ffff0000e2453b58 x19: dfff800000000000 x18: 0000000000000000 [ 74.077484][ T5340] x17: 0000000000000000 x16: ffff80001134e478 x15: 0000000000000000 [ 74.078802][ T5340] x14: 0000000000000001 x13: 1fffe000341d2dab x12: 0000000000000000 [ 74.080117][ T5340] x11: ff8080000830061c x10: 0000000000000000 x9 : aeb41d58258f7b00 [ 74.081474][ T5340] x8 : aeb41d58258f7b00 x7 : 0000000000000001 x6 : 0000000000000001 [ 74.082716][ T5340] x5 : ffff800021ae7398 x4 : ffff80001446f500 x3 : ffff80000850f688 [ 74.083995][ T5340] x2 : 0000000000000001 x1 : 0000000100000000 x0 : 0000000000000026 [ 74.085277][ T5340] Call trace: [ 74.085763][ T5340] __btrfs_unlink_inode+0x8d8/0xab8 [ 74.086570][ T5340] btrfs_unlink+0x10c/0x25c [ 74.087396][ T5340] vfs_unlink+0x2e0/0x4f4 [ 74.088167][ T5340] do_unlinkat+0x318/0x624 [ 74.088971][ T5340] __arm64_sys_unlinkat+0xe0/0xfc [ 74.089860][ T5340] invoke_syscall+0x98/0x28c [ 74.090610][ T5340] el0_svc_common+0x13c/0x258 [ 74.091472][ T5340] do_el0_svc+0x5c/0x140 [ 74.092239][ T5340] el0_svc+0x78/0x1d0 [ 74.093030][ T5340] el0t_64_sync_handler+0xcc/0xe4 [ 74.093939][ T5340] el0t_64_sync+0x1a0/0x1a4 [ 74.094801][ T5340] irq event stamp: 79414 [ 74.095536][ T5340] hardirqs last enabled at (79413): [] __up_console_sem+0xb4/0xfc [ 74.097220][ T5340] hardirqs last disabled at (79414): [] el1_dbg+0x24/0x80 [ 74.098645][ T5340] softirqs last enabled at (79394): [] handle_softirqs+0xa70/0xc14 [ 74.100239][ T5340] softirqs last disabled at (79327): [] __irq_exit_rcu+0x240/0x434 [ 74.101715][ T5340] ---[ end trace 149d0c2dff8b1a88 ]--- [ 74.104766][ T5340] BTRFS: error (device loop0) in __btrfs_unlink_inode:4182: errno=-12 Out of memory [ 74.106453][ T5340] BTRFS info (device loop0): forced readonly [ 74.244877][ T4185] Bluetooth: hci0: command 0x0419 tx timeout [ 74.287960][ T5362] loop0: detected capacity change from 0 to 32768 [ 74.337996][ T5362] BTRFS: device fsid c9fe44da-de57-406a-8241-57ec7d4412cf devid 1 transid 8 /dev/loop0 scanned by syz.0.38 (5362) [ 74.341083][ T5362] BTRFS info (device loop0): using crc32c (crc32c-generic) checksum algorithm [ 74.342425][ T5362] BTRFS info (device loop0): using free space tree [ 74.343489][ T5362] BTRFS info (device loop0): has skinny extents [ 74.351149][ T5362] BTRFS info (device loop0): enabling ssd optimizations [ 74.355156][ T5362] FAULT_INJECTION: forcing a failure. [ 74.355156][ T5362] name failslab, interval 1, probability 0, space 0, times 0 [ 74.357491][ T5362] CPU: 1 PID: 5362 Comm: syz.0.38 Tainted: G W syzkaller #0 [ 74.358797][ T5362] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/02/2026 [ 74.360355][ T5362] Call trace: [ 74.360840][ T5362] dump_backtrace+0x0/0x458 [ 74.361592][ T5362] show_stack+0x2c/0x3c [ 74.362302][ T5362] __dump_stack+0x30/0x40 [ 74.363001][ T5362] dump_stack_lvl+0xf4/0x15c [ 74.363733][ T5362] dump_stack+0x1c/0x5c [ 74.364406][ T5362] should_fail+0x3c8/0x520 [ 74.365194][ T5362] __should_failslab+0xbc/0x10c [ 74.366045][ T5362] should_failslab+0x10/0x28 [ 74.366873][ T5362] slab_pre_alloc_hook+0x64/0xe8 [ 74.367717][ T5362] kmem_cache_alloc_trace+0x98/0x3f0 [ 74.368603][ T5362] btrfs_delete_delayed_dir_index+0x22c/0x574 [ 74.369702][ T5362] __btrfs_unlink_inode+0x34c/0xab8 [ 74.370641][ T5362] btrfs_unlink+0x10c/0x25c [ 74.371370][ T5362] vfs_unlink+0x2e0/0x4f4 [ 74.372130][ T5362] do_unlinkat+0x318/0x624 [ 74.372891][ T5362] __arm64_sys_unlinkat+0xe0/0xfc [ 74.373835][ T5362] invoke_syscall+0x98/0x28c [ 74.374663][ T5362] el0_svc_common+0x13c/0x258 [ 74.375450][ T5362] do_el0_svc+0x5c/0x140 [ 74.376177][ T5362] el0_svc+0x78/0x1d0 [ 74.376906][ T5362] el0t_64_sync_handler+0xcc/0xe4 [ 74.377790][ T5362] el0t_64_sync+0x1a0/0x1a4 [ 74.379786][ T5362] ------------[ cut here ]------------ [ 74.380711][ T5362] WARNING: CPU: 1 PID: 5362 at fs/btrfs/inode.c:4182 __btrfs_unlink_inode+0x8d8/0xab8 [ 74.382114][ T5362] Modules linked in: [ 74.382708][ T5362] CPU: 1 PID: 5362 Comm: syz.0.38 Tainted: G W syzkaller #0 [ 74.384092][ T5362] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/02/2026 [ 74.385716][ T5362] pstate: 62400005 (nZCv daif +PAN -UAO +TCO -DIT -SSBS BTYPE=--) [ 74.387023][ T5362] pc : __btrfs_unlink_inode+0x8d8/0xab8 [ 74.387995][ T5362] lr : __btrfs_unlink_inode+0x8d8/0xab8 [ 74.388926][ T5362] sp : ffff800021ae7a80 [ 74.389675][ T5362] x29: ffff800021ae7b10 x28: 0000000000000104 x27: ffff0000ece2a010 [ 74.391096][ T5362] x26: 0000000000000100 x25: 00000000fffffff4 x24: ffff0000c60bbd10 [ 74.392463][ T5362] x23: ffff0000e2453c60 x22: ffff0000eec88000 x21: 1fffe0001c48a797 [ 74.393872][ T5362] x20: ffff0000e2453cb8 x19: dfff800000000000 x18: 0000000000000000 [ 74.395271][ T5362] x17: 0000000000000000 x16: ffff80001134e478 x15: 0000000000000000 [ 74.396609][ T5362] x14: 0000000000000001 x13: 1fffe000341d2dab x12: 0000000000000000 [ 74.397959][ T5362] x11: ff8080000830061c x10: 0000000000000000 x9 : e842ab50809b7800 [ 74.399361][ T5362] x8 : e842ab50809b7800 x7 : 0000000000000001 x6 : 0000000000000001 [ 74.400747][ T5362] x5 : ffff800021ae7398 x4 : ffff80001446f500 x3 : ffff80000850f688 [ 74.402186][ T5362] x2 : 0000000000000001 x1 : 0000000100000000 x0 : 0000000000000026 [ 74.403582][ T5362] Call trace: [ 74.404190][ T5362] __btrfs_unlink_inode+0x8d8/0xab8 [ 74.405116][ T5362] btrfs_unlink+0x10c/0x25c [ 74.405947][ T5362] vfs_unlink+0x2e0/0x4f4 [ 74.406773][ T5362] do_unlinkat+0x318/0x624 [ 74.407598][ T5362] __arm64_sys_unlinkat+0xe0/0xfc [ 74.408527][ T5362] invoke_syscall+0x98/0x28c [ 74.409348][ T5362] el0_svc_common+0x13c/0x258 [ 74.410155][ T5362] do_el0_svc+0x5c/0x140 [ 74.410856][ T5362] el0_svc+0x78/0x1d0 [ 74.411584][ T5362] el0t_64_sync_handler+0xcc/0xe4 [ 74.412498][ T5362] el0t_64_sync+0x1a0/0x1a4 [ 74.413284][ T5362] irq event stamp: 78902 [ 74.414005][ T5362] hardirqs last enabled at (78901): [] __up_console_sem+0xb4/0xfc [ 74.415600][ T5362] hardirqs last disabled at (78902): [] el1_dbg+0x24/0x80 [ 74.417084][ T5362] softirqs last enabled at (78882): [] handle_softirqs+0xa70/0xc14 [ 74.418700][ T5362] softirqs last disabled at (78843): [] __irq_exit_rcu+0x240/0x434 [ 74.420289][ T5362] ---[ end trace 149d0c2dff8b1a89 ]--- [ 74.423219][ T5362] BTRFS: error (device loop0) in __btrfs_unlink_inode:4182: errno=-12 Out of memory [ 74.424888][ T5362] BTRFS info (device loop0): forced readonly [ 74.558084][ T5385] loop0: detected capacity change from 0 to 32768 [ 74.566071][ T5385] BTRFS: device fsid c9fe44da-de57-406a-8241-57ec7d4412cf devid 1 transid 8 /dev/loop0 scanned by syz.0.39 (5385) [ 74.571366][ T5385] BTRFS info (device loop0): using crc32c (crc32c-generic) checksum algorithm [ 74.572887][ T5385] BTRFS info (device loop0): using free space tree [ 74.574023][ T5385] BTRFS info (device loop0): has skinny extents [ 74.595814][ T5385] BTRFS info (device loop0): enabling ssd optimizations [ 74.599570][ T5385] FAULT_INJECTION: forcing a failure. [ 74.599570][ T5385] name failslab, interval 1, probability 0, space 0, times 0 [ 74.601778][ T5385] CPU: 1 PID: 5385 Comm: syz.0.39 Tainted: G W syzkaller #0 [ 74.603128][ T5385] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/02/2026 [ 74.604719][ T5385] Call trace: [ 74.605255][ T5385] dump_backtrace+0x0/0x458 [ 74.606084][ T5385] show_stack+0x2c/0x3c [ 74.606776][ T5385] __dump_stack+0x30/0x40 [ 74.607541][ T5385] dump_stack_lvl+0xf4/0x15c [ 74.608283][ T5385] dump_stack+0x1c/0x5c [ 74.608956][ T5385] should_fail+0x3c8/0x520 [ 74.609696][ T5385] __should_failslab+0xbc/0x10c [ 74.610488][ T5385] should_failslab+0x10/0x28 [ 74.611244][ T5385] slab_pre_alloc_hook+0x64/0xe8 [ 74.612102][ T5385] kmem_cache_alloc_trace+0x98/0x3f0 [ 74.613032][ T5385] btrfs_delete_delayed_dir_index+0x22c/0x574 [ 74.614140][ T5385] __btrfs_unlink_inode+0x34c/0xab8 [ 74.615198][ T5385] btrfs_unlink+0x10c/0x25c [ 74.616092][ T5385] vfs_unlink+0x2e0/0x4f4 [ 74.616907][ T5385] do_unlinkat+0x318/0x624 [ 74.617681][ T5385] __arm64_sys_unlinkat+0xe0/0xfc [ 74.618588][ T5385] invoke_syscall+0x98/0x28c [ 74.619450][ T5385] el0_svc_common+0x13c/0x258 [ 74.620243][ T5385] do_el0_svc+0x5c/0x140 [ 74.620894][ T5385] el0_svc+0x78/0x1d0 [ 74.621544][ T5385] el0t_64_sync_handler+0xcc/0xe4 [ 74.622356][ T5385] el0t_64_sync+0x1a0/0x1a4 [ 74.625354][ T5385] ------------[ cut here ]------------ [ 74.626372][ T5385] WARNING: CPU: 1 PID: 5385 at fs/btrfs/inode.c:4182 __btrfs_unlink_inode+0x8d8/0xab8 [ 74.627816][ T5385] Modules linked in: [ 74.628387][ T5385] CPU: 1 PID: 5385 Comm: syz.0.39 Tainted: G W syzkaller #0 [ 74.629735][ T5385] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/02/2026 [ 74.631259][ T5385] pstate: 62400005 (nZCv daif +PAN -UAO +TCO -DIT -SSBS BTYPE=--) [ 74.632521][ T5385] pc : __btrfs_unlink_inode+0x8d8/0xab8 [ 74.633382][ T5385] lr : __btrfs_unlink_inode+0x8d8/0xab8 [ 74.634241][ T5385] sp : ffff800022097a80 [ 74.634882][ T5385] x29: ffff800022097b10 x28: 0000000000000104 x27: ffff0000ece2a410 [ 74.636264][ T5385] x26: 0000000000000100 x25: 00000000fffffff4 x24: ffff0000d8e49b00 [ 74.637880][ T5385] x23: ffff0000e2453dc0 x22: ffff0000ca4ae000 x21: 1fffe0001c48a7c3 [ 74.639382][ T5385] x20: ffff0000e2453e18 x19: dfff800000000000 x18: 0000000000000000 [ 74.640779][ T5385] x17: 0000000000000000 x16: ffff80001134e478 x15: 0000000000000000 [ 74.642061][ T5385] x14: 0000000000000001 x13: 1fffe000341d2dab x12: 0000000000000000 [ 74.643372][ T5385] x11: ff8080000830061c x10: 0000000000000000 x9 : e7c0bddb77d80200 [ 74.644702][ T5385] x8 : e7c0bddb77d80200 x7 : 0000000000000001 x6 : 0000000000000001 [ 74.646103][ T5385] x5 : ffff800022097398 x4 : ffff80001446f500 x3 : ffff80000850f688 [ 74.647346][ T5385] x2 : 0000000000000001 x1 : 0000000100000000 x0 : 0000000000000026 [ 74.648591][ T5385] Call trace: [ 74.649129][ T5385] __btrfs_unlink_inode+0x8d8/0xab8 [ 74.649918][ T5385] btrfs_unlink+0x10c/0x25c [ 74.650727][ T5385] vfs_unlink+0x2e0/0x4f4 [ 74.651449][ T5385] do_unlinkat+0x318/0x624 [ 74.652192][ T5385] __arm64_sys_unlinkat+0xe0/0xfc [ 74.653032][ T5385] invoke_syscall+0x98/0x28c [ 74.653820][ T5385] el0_svc_common+0x13c/0x258 [ 74.654619][ T5385] do_el0_svc+0x5c/0x140 [ 74.655400][ T5385] el0_svc+0x78/0x1d0 [ 74.656045][ T5385] el0t_64_sync_handler+0xcc/0xe4 [ 74.656836][ T5385] el0t_64_sync+0x1a0/0x1a4 [ 74.657575][ T5385] irq event stamp: 78986 [ 74.658253][ T5385] hardirqs last enabled at (78985): [] __up_console_sem+0xb4/0xfc [ 74.659746][ T5385] hardirqs last disabled at (78986): [] el1_dbg+0x24/0x80 [ 74.661141][ T5385] softirqs last enabled at (78966): [] handle_softirqs+0xa70/0xc14 [ 74.662782][ T5385] softirqs last disabled at (78953): [] __irq_exit_rcu+0x240/0x434 [ 74.664439][ T5385] ---[ end trace 149d0c2dff8b1a8a ]--- [ 74.667995][ T5385] BTRFS: error (device loop0) in __btrfs_unlink_inode:4182: errno=-12 Out of memory [ 74.669639][ T5385] BTRFS info (device loop0): forced readonly [ 74.834602][ T5407] loop0: detected capacity change from 0 to 32768 [ 74.841579][ T5407] BTRFS: device fsid c9fe44da-de57-406a-8241-57ec7d4412cf devid 1 transid 8 /dev/loop0 scanned by syz.0.40 (5407) [ 74.846352][ T5407] BTRFS info (device loop0): using crc32c (crc32c-generic) checksum algorithm [ 74.847981][ T5407] BTRFS info (device loop0): using free space tree [ 74.848966][ T5407] BTRFS info (device loop0): has skinny extents [ 74.863865][ T5407] BTRFS info (device loop0): enabling ssd optimizations [ 74.870412][ T5407] FAULT_INJECTION: forcing a failure. [ 74.870412][ T5407] name failslab, interval 1, probability 0, space 0, times 0 [ 74.872667][ T5407] CPU: 0 PID: 5407 Comm: syz.0.40 Tainted: G W syzkaller #0 [ 74.874094][ T5407] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/02/2026 [ 74.875852][ T5407] Call trace: [ 74.876444][ T5407] dump_backtrace+0x0/0x458 [ 74.877268][ T5407] show_stack+0x2c/0x3c [ 74.878083][ T5407] __dump_stack+0x30/0x40 [ 74.878865][ T5407] dump_stack_lvl+0xf4/0x15c [ 74.879706][ T5407] dump_stack+0x1c/0x5c [ 74.880390][ T5407] should_fail+0x3c8/0x520 [ 74.881214][ T5407] __should_failslab+0xbc/0x10c [ 74.882114][ T5407] should_failslab+0x10/0x28 [ 74.882858][ T5407] slab_pre_alloc_hook+0x64/0xe8 [ 74.883720][ T5407] kmem_cache_alloc_trace+0x98/0x3f0 [ 74.884641][ T5407] btrfs_delete_delayed_dir_index+0x22c/0x574 [ 74.885687][ T5407] __btrfs_unlink_inode+0x34c/0xab8 [ 74.886558][ T5407] btrfs_unlink+0x10c/0x25c [ 74.887340][ T5407] vfs_unlink+0x2e0/0x4f4 [ 74.888034][ T5407] do_unlinkat+0x318/0x624 [ 74.888744][ T5407] __arm64_sys_unlinkat+0xe0/0xfc [ 74.889579][ T5407] invoke_syscall+0x98/0x28c [ 74.890377][ T5407] el0_svc_common+0x13c/0x258 [ 74.891144][ T5407] do_el0_svc+0x5c/0x140 [ 74.891825][ T5407] el0_svc+0x78/0x1d0 [ 74.892441][ T5407] el0t_64_sync_handler+0xcc/0xe4 [ 74.893301][ T5407] el0t_64_sync+0x1a0/0x1a4 [ 74.895190][ T5407] ------------[ cut here ]------------ [ 74.896203][ T5407] WARNING: CPU: 0 PID: 5407 at fs/btrfs/inode.c:4182 __btrfs_unlink_inode+0x8d8/0xab8 [ 74.897669][ T5407] Modules linked in: [ 74.898282][ T5407] CPU: 0 PID: 5407 Comm: syz.0.40 Tainted: G W syzkaller #0 [ 74.899554][ T5407] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/02/2026 [ 74.901178][ T5407] pstate: 62400005 (nZCv daif +PAN -UAO +TCO -DIT -SSBS BTYPE=--) [ 74.902396][ T5407] pc : __btrfs_unlink_inode+0x8d8/0xab8 [ 74.903314][ T5407] lr : __btrfs_unlink_inode+0x8d8/0xab8 [ 74.904131][ T5407] sp : ffff800021fd7a80 [ 74.904716][ T5407] x29: ffff800021fd7b10 x28: 0000000000000104 x27: ffff0000ecdfe010 [ 74.906075][ T5407] x26: 0000000000000100 x25: 00000000fffffff4 x24: ffff0000d6ae4420 [ 74.907478][ T5407] x23: ffff0000de88e210 x22: ffff0000d1968000 x21: 1fffe0001bd11c4d [ 74.908814][ T5407] x20: ffff0000de88e268 x19: dfff800000000000 x18: 0000000000000000 [ 74.910222][ T5407] x17: 0000000000000000 x16: ffff80001134e478 x15: 0000000000000000 [ 74.911638][ T5407] x14: 0000000000000001 x13: 1fffe000341cebab x12: 0000000000000000 [ 74.913051][ T5407] x11: ff8080000830061c x10: 0000000000000000 x9 : 50c6516c6fbfd400 [ 74.914360][ T5407] x8 : 50c6516c6fbfd400 x7 : 0000000000000001 x6 : 0000000000000001 [ 74.915715][ T5407] x5 : ffff800021fd7398 x4 : ffff80001446f500 x3 : ffff80000850f688 [ 74.917048][ T5407] x2 : 0000000000000001 x1 : 0000000100000000 x0 : 0000000000000026 [ 74.918422][ T5407] Call trace: [ 74.918985][ T5407] __btrfs_unlink_inode+0x8d8/0xab8 [ 74.919857][ T5407] btrfs_unlink+0x10c/0x25c [ 74.920655][ T5407] vfs_unlink+0x2e0/0x4f4 [ 74.921406][ T5407] do_unlinkat+0x318/0x624 [ 74.922135][ T5407] __arm64_sys_unlinkat+0xe0/0xfc [ 74.922927][ T5407] invoke_syscall+0x98/0x28c [ 74.923820][ T5407] el0_svc_common+0x13c/0x258 [ 74.924716][ T5407] do_el0_svc+0x5c/0x140 [ 74.925515][ T5407] el0_svc+0x78/0x1d0 [ 74.926173][ T5407] el0t_64_sync_handler+0xcc/0xe4 [ 74.926958][ T5407] el0t_64_sync+0x1a0/0x1a4 [ 74.927680][ T5407] irq event stamp: 78832 [ 74.928383][ T5407] hardirqs last enabled at (78831): [] __up_console_sem+0xb4/0xfc [ 74.930000][ T5407] hardirqs last disabled at (78832): [] el1_dbg+0x24/0x80 [ 74.931436][ T5407] softirqs last enabled at (78812): [] handle_softirqs+0xa70/0xc14 [ 74.933046][ T5407] softirqs last disabled at (78759): [] __irq_exit_rcu+0x240/0x434 [ 74.934679][ T5407] ---[ end trace 149d0c2dff8b1a8b ]--- [ 74.935850][ T5407] BTRFS: error (device loop0) in __btrfs_unlink_inode:4182: errno=-12 Out of memory [ 74.937382][ T5407] BTRFS info (device loop0): forced readonly [ 75.159204][ T5430] BTRFS: device fsid c9fe44da-de57-406a-8241-57ec7d4412cf devid 1 transid 8 /dev/loop0 scanned by syz.0.41 (5430) [ 75.164328][ T5430] BTRFS info (device loop0): using crc32c (crc32c-generic) checksum algorithm [ 75.166796][ T5430] BTRFS info (device loop0): using free space tree [ 75.167978][ T5430] BTRFS info (device loop0): has skinny extents [ 75.176916][ T5430] BTRFS info (device loop0): enabling ssd optimizations [ 75.180846][ T5430] FAULT_INJECTION: forcing a failure. [ 75.180846][ T5430] name failslab, interval 1, probability 0, space 0, times 0 [ 75.182710][ T5430] CPU: 0 PID: 5430 Comm: syz.0.41 Tainted: G W syzkaller #0 [ 75.183996][ T5430] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/02/2026 [ 75.185610][ T5430] Call trace: [ 75.186152][ T5430] dump_backtrace+0x0/0x458 [ 75.186896][ T5430] show_stack+0x2c/0x3c [ 75.187607][ T5430] __dump_stack+0x30/0x40 [ 75.188335][ T5430] dump_stack_lvl+0xf4/0x15c [ 75.189113][ T5430] dump_stack+0x1c/0x5c [ 75.189832][ T5430] should_fail+0x3c8/0x520 [ 75.190590][ T5430] __should_failslab+0xbc/0x10c [ 75.191316][ T5430] should_failslab+0x10/0x28 [ 75.192101][ T5430] slab_pre_alloc_hook+0x64/0xe8 [ 75.192935][ T5430] kmem_cache_alloc_trace+0x98/0x3f0 [ 75.193860][ T5430] btrfs_delete_delayed_dir_index+0x22c/0x574 [ 75.194824][ T5430] __btrfs_unlink_inode+0x34c/0xab8 [ 75.195693][ T5430] btrfs_unlink+0x10c/0x25c [ 75.196460][ T5430] vfs_unlink+0x2e0/0x4f4 [ 75.197237][ T5430] do_unlinkat+0x318/0x624 [ 75.197997][ T5430] __arm64_sys_unlinkat+0xe0/0xfc [ 75.198840][ T5430] invoke_syscall+0x98/0x28c [ 75.199575][ T5430] el0_svc_common+0x13c/0x258 [ 75.200380][ T5430] do_el0_svc+0x5c/0x140 [ 75.201075][ T5430] el0_svc+0x78/0x1d0 [ 75.201812][ T5430] el0t_64_sync_handler+0xcc/0xe4 [ 75.202702][ T5430] el0t_64_sync+0x1a0/0x1a4 [ 75.223058][ T5430] ------------[ cut here ]------------ [ 75.224195][ T5430] WARNING: CPU: 1 PID: 5430 at fs/btrfs/inode.c:4182 __btrfs_unlink_inode+0x8d8/0xab8 [ 75.225791][ T5430] Modules linked in: [ 75.226441][ T5430] CPU: 1 PID: 5430 Comm: syz.0.41 Tainted: G W syzkaller #0 [ 75.227839][ T5430] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/02/2026 [ 75.229504][ T5430] pstate: 62400005 (nZCv daif +PAN -UAO +TCO -DIT -SSBS BTYPE=--) [ 75.230790][ T5430] pc : __btrfs_unlink_inode+0x8d8/0xab8 [ 75.231670][ T5430] lr : __btrfs_unlink_inode+0x8d8/0xab8 [ 75.232618][ T5430] sp : ffff8000221a7a80 [ 75.233287][ T5430] x29: ffff8000221a7b10 x28: 0000000000000104 x27: ffff0000ecdfd010 [ 75.234596][ T5430] x26: 0000000000000100 x25: 00000000fffffff4 x24: ffff0000ca306790 [ 75.235976][ T5430] x23: ffff0000de88ec60 x22: ffff0000cd354000 x21: 1fffe0001bd11d97 [ 75.237367][ T5430] x20: ffff0000de88ecb8 x19: dfff800000000000 x18: 0000000000000000 [ 75.238742][ T5430] x17: 0000000000000000 x16: ffff80001134e478 x15: 0000000000000000 [ 75.240097][ T5430] x14: 0000000000000001 x13: 1fffe000341d2dab x12: 0000000000000000 [ 75.241370][ T5430] x11: ff8080000830061c x10: 0000000000000000 x9 : 323d3df859838500 [ 75.242726][ T5430] x8 : 323d3df859838500 x7 : 0000000000000001 x6 : 0000000000000001 [ 75.243979][ T5430] x5 : ffff8000221a7398 x4 : ffff80001446f500 x3 : ffff80000850f688 [ 75.245385][ T5430] x2 : 0000000000000001 x1 : 0000000100000000 x0 : 0000000000000026 [ 75.246647][ T5430] Call trace: [ 75.247216][ T5430] __btrfs_unlink_inode+0x8d8/0xab8 [ 75.248081][ T5430] btrfs_unlink+0x10c/0x25c [ 75.248816][ T5430] vfs_unlink+0x2e0/0x4f4 [ 75.249492][ T5430] do_unlinkat+0x318/0x624 [ 75.250194][ T5430] __arm64_sys_unlinkat+0xe0/0xfc [ 75.250988][ T5430] invoke_syscall+0x98/0x28c [ 75.251738][ T5430] el0_svc_common+0x13c/0x258 [ 75.252526][ T5430] do_el0_svc+0x5c/0x140 [ 75.253193][ T5430] el0_svc+0x78/0x1d0 [ 75.253874][ T5430] el0t_64_sync_handler+0xcc/0xe4 [ 75.254774][ T5430] el0t_64_sync+0x1a0/0x1a4 [ 75.255483][ T5430] irq event stamp: 78788 [ 75.256140][ T5430] hardirqs last enabled at (78787): [] __up_console_sem+0xb4/0xfc [ 75.257654][ T5430] hardirqs last disabled at (78788): [] el1_dbg+0x24/0x80 [ 75.259009][ T5430] softirqs last enabled at (78768): [] handle_softirqs+0xa70/0xc14 [ 75.260554][ T5430] softirqs last disabled at (78725): [] __irq_exit_rcu+0x240/0x434 [ 75.262010][ T5430] ---[ end trace 149d0c2dff8b1a8c ]--- [ 75.266515][ T5430] BTRFS: error (device loop0) in __btrfs_unlink_inode:4182: errno=-12 Out of memory [ 75.268756][ T5430] BTRFS info (device loop0): forced readonly [ 75.546194][ T5451] BTRFS: device fsid c9fe44da-de57-406a-8241-57ec7d4412cf devid 1 transid 8 /dev/loop0 scanned by syz.0.42 (5451) [ 75.596885][ T5451] BTRFS info (device loop0): using crc32c (crc32c-generic) checksum algorithm [ 75.598316][ T5451] BTRFS info (device loop0): using free space tree [ 75.599396][ T5451] BTRFS info (device loop0): has skinny extents [ 75.606829][ T5451] BTRFS info (device loop0): enabling ssd optimizations [ 75.611601][ T5451] FAULT_INJECTION: forcing a failure. [ 75.611601][ T5451] name failslab, interval 1, probability 0, space 0, times 0 [ 75.613762][ T5451] CPU: 1 PID: 5451 Comm: syz.0.42 Tainted: G W syzkaller #0 [ 75.615247][ T5451] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/02/2026 [ 75.616998][ T5451] Call trace: [ 75.617546][ T5451] dump_backtrace+0x0/0x458 [ 75.618325][ T5451] show_stack+0x2c/0x3c [ 75.619065][ T5451] __dump_stack+0x30/0x40 [ 75.619973][ T5451] dump_stack_lvl+0xf4/0x15c [ 75.620842][ T5451] dump_stack+0x1c/0x5c [ 75.621599][ T5451] should_fail+0x3c8/0x520 [ 75.622385][ T5451] __should_failslab+0xbc/0x10c [ 75.623247][ T5451] should_failslab+0x10/0x28 [ 75.624079][ T5451] slab_pre_alloc_hook+0x64/0xe8 [ 75.624944][ T5451] kmem_cache_alloc_trace+0x98/0x3f0 [ 75.625798][ T5451] btrfs_delete_delayed_dir_index+0x22c/0x574 [ 75.626796][ T5451] __btrfs_unlink_inode+0x34c/0xab8 [ 75.627638][ T5451] btrfs_unlink+0x10c/0x25c [ 75.628451][ T5451] vfs_unlink+0x2e0/0x4f4 [ 75.629183][ T5451] do_unlinkat+0x318/0x624 [ 75.629969][ T5451] __arm64_sys_unlinkat+0xe0/0xfc [ 75.630857][ T5451] invoke_syscall+0x98/0x28c [ 75.631671][ T5451] el0_svc_common+0x13c/0x258 [ 75.632466][ T5451] do_el0_svc+0x5c/0x140 [ 75.633274][ T5451] el0_svc+0x78/0x1d0 [ 75.634009][ T5451] el0t_64_sync_handler+0xcc/0xe4 [ 75.634907][ T5451] el0t_64_sync+0x1a0/0x1a4 [ 75.637634][ T5451] ------------[ cut here ]------------ [ 75.638862][ T5451] WARNING: CPU: 1 PID: 5451 at fs/btrfs/inode.c:4182 __btrfs_unlink_inode+0x8d8/0xab8 [ 75.640380][ T5451] Modules linked in: [ 75.640964][ T5451] CPU: 1 PID: 5451 Comm: syz.0.42 Tainted: G W syzkaller #0 [ 75.642253][ T5451] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/02/2026 [ 75.643761][ T5451] pstate: 62400005 (nZCv daif +PAN -UAO +TCO -DIT -SSBS BTYPE=--) [ 75.644960][ T5451] pc : __btrfs_unlink_inode+0x8d8/0xab8 [ 75.645984][ T5451] lr : __btrfs_unlink_inode+0x8d8/0xab8 [ 75.647056][ T5451] sp : ffff8000221c7a80 [ 75.647800][ T5451] x29: ffff8000221c7b10 x28: 0000000000000104 x27: ffff0000ece29010 [ 75.649318][ T5451] x26: 0000000000000100 x25: 00000000fffffff4 x24: ffff0000d23f80b0 [ 75.650736][ T5451] x23: ffff0000e2453790 x22: ffff0000c8e1a000 x21: 1fffe0001c48a6fd [ 75.652176][ T5451] x20: ffff0000e24537e8 x19: dfff800000000000 x18: 0000000000000000 [ 75.653809][ T5451] x17: 0000000000000000 x16: ffff80001134e478 x15: 0000000000000000 [ 75.655281][ T5451] x14: 0000000000000001 x13: 1fffe000341d2dab x12: 0000000000000000 [ 75.656813][ T5451] x11: ff8080000830061c x10: 0000000000000000 x9 : 9a5f01267d4c6e00 [ 75.658443][ T5451] x8 : 9a5f01267d4c6e00 x7 : 0000000000000001 x6 : 0000000000000001 [ 75.660087][ T5451] x5 : ffff8000221c7398 x4 : ffff80001446f500 x3 : ffff80000850f688 [ 75.661499][ T5451] x2 : 0000000000000001 x1 : 0000000100000000 x0 : 0000000000000026 [ 75.663033][ T5451] Call trace: [ 75.663655][ T5451] __btrfs_unlink_inode+0x8d8/0xab8 [ 75.664649][ T5451] btrfs_unlink+0x10c/0x25c [ 75.665502][ T5451] vfs_unlink+0x2e0/0x4f4 [ 75.666275][ T5451] do_unlinkat+0x318/0x624 [ 75.667015][ T5451] __arm64_sys_unlinkat+0xe0/0xfc [ 75.667864][ T5451] invoke_syscall+0x98/0x28c [ 75.668613][ T5451] el0_svc_common+0x13c/0x258 [ 75.669527][ T5451] do_el0_svc+0x5c/0x140 [ 75.670317][ T5451] el0_svc+0x78/0x1d0 [ 75.671038][ T5451] el0t_64_sync_handler+0xcc/0xe4 [ 75.672030][ T5451] el0t_64_sync+0x1a0/0x1a4 [ 75.672866][ T5451] irq event stamp: 79118 [ 75.673625][ T5451] hardirqs last enabled at (79117): [] __up_console_sem+0xb4/0xfc [ 75.675273][ T5451] hardirqs last disabled at (79118): [] el1_dbg+0x24/0x80 [ 75.676966][ T5451] softirqs last enabled at (79094): [] handle_softirqs+0xa70/0xc14 [ 75.678654][ T5451] softirqs last disabled at (79083): [] __irq_exit_rcu+0x240/0x434 [ 75.680281][ T5451] ---[ end trace 149d0c2dff8b1a8d ]--- [ 75.684615][ T5451] BTRFS: error (device loop0) in __btrfs_unlink_inode:4182: errno=-12 Out of memory [ 75.686363][ T5451] BTRFS info (device loop0): forced readonly [ 75.731920][ T4709] BTRFS: device fsid c9fe44da-de57-406a-8241-57ec7d4412cf devid 1 transid 8 /dev/loop0 scanned by udevd (4709) [ 75.844752][ T5473] BTRFS info (device loop0): using crc32c (crc32c-generic) checksum algorithm [ 75.846324][ T5473] BTRFS info (device loop0): using free space tree [ 75.847415][ T5473] BTRFS info (device loop0): has skinny extents [ 75.867172][ T5473] BTRFS info (device loop0): enabling ssd optimizations [ 75.871291][ T5473] FAULT_INJECTION: forcing a failure. [ 75.871291][ T5473] name failslab, interval 1, probability 0, space 0, times 0 [ 75.873320][ T5473] CPU: 1 PID: 5473 Comm: syz.0.43 Tainted: G W syzkaller #0 [ 75.874582][ T5473] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/02/2026 [ 75.876277][ T5473] Call trace: [ 75.876853][ T5473] dump_backtrace+0x0/0x458 [ 75.877602][ T5473] show_stack+0x2c/0x3c [ 75.878288][ T5473] __dump_stack+0x30/0x40 [ 75.879076][ T5473] dump_stack_lvl+0xf4/0x15c [ 75.879874][ T5473] dump_stack+0x1c/0x5c [ 75.880708][ T5473] should_fail+0x3c8/0x520 [ 75.881492][ T5473] __should_failslab+0xbc/0x10c [ 75.882318][ T5473] should_failslab+0x10/0x28 [ 75.883087][ T5473] slab_pre_alloc_hook+0x64/0xe8 [ 75.884030][ T5473] kmem_cache_alloc+0x94/0x3d8 [ 75.884908][ T5473] start_transaction+0x530/0x1438 [ 75.885815][ T5473] btrfs_start_transaction_fallback_global_rsv+0x34/0x44 [ 75.887175][ T5473] btrfs_unlink+0x74/0x25c [ 75.888012][ T5473] vfs_unlink+0x2e0/0x4f4 [ 75.888838][ T5473] do_unlinkat+0x318/0x624 [ 75.889666][ T5473] __arm64_sys_unlinkat+0xe0/0xfc [ 75.890658][ T5473] invoke_syscall+0x98/0x28c [ 75.891522][ T5473] el0_svc_common+0x13c/0x258 [ 75.892427][ T5473] do_el0_svc+0x5c/0x140 [ 75.893270][ T5473] el0_svc+0x78/0x1d0 [ 75.894053][ T5473] el0t_64_sync_handler+0xcc/0xe4 [ 75.894963][ T5473] el0t_64_sync+0x1a0/0x1a4 [ 76.075736][ T5497] BTRFS: device fsid c9fe44da-de57-406a-8241-57ec7d4412cf devid 1 transid 8 /dev/loop0 scanned by syz.0.44 (5497) [ 76.116352][ T5497] BTRFS info (device loop0): using crc32c (crc32c-generic) checksum algorithm [ 76.117929][ T5497] BTRFS info (device loop0): using free space tree [ 76.119094][ T5497] BTRFS info (device loop0): has skinny extents [ 76.126603][ T5497] BTRFS info (device loop0): enabling ssd optimizations [ 76.130280][ T5497] FAULT_INJECTION: forcing a failure. [ 76.130280][ T5497] name failslab, interval 1, probability 0, space 0, times 0 [ 76.132243][ T5497] CPU: 1 PID: 5497 Comm: syz.0.44 Tainted: G W syzkaller #0 [ 76.133666][ T5497] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/02/2026 [ 76.135320][ T5497] Call trace: [ 76.135876][ T5497] dump_backtrace+0x0/0x458 [ 76.136697][ T5497] show_stack+0x2c/0x3c [ 76.137402][ T5497] __dump_stack+0x30/0x40 [ 76.138197][ T5497] dump_stack_lvl+0xf4/0x15c [ 76.139001][ T5497] dump_stack+0x1c/0x5c [ 76.139753][ T5497] should_fail+0x3c8/0x520 [ 76.140509][ T5497] __should_failslab+0xbc/0x10c [ 76.141298][ T5497] should_failslab+0x10/0x28 [ 76.142044][ T5497] slab_pre_alloc_hook+0x64/0xe8 [ 76.142877][ T5497] kmem_cache_alloc_trace+0x98/0x3f0 [ 76.143812][ T5497] btrfs_delete_delayed_dir_index+0x22c/0x574 [ 76.144819][ T5497] __btrfs_unlink_inode+0x34c/0xab8 [ 76.145686][ T5497] btrfs_unlink+0x10c/0x25c [ 76.146391][ T5497] vfs_unlink+0x2e0/0x4f4 [ 76.147090][ T5497] do_unlinkat+0x318/0x624 [ 76.147813][ T5497] __arm64_sys_unlinkat+0xe0/0xfc [ 76.148671][ T5497] invoke_syscall+0x98/0x28c [ 76.149477][ T5497] el0_svc_common+0x13c/0x258 [ 76.150293][ T5497] do_el0_svc+0x5c/0x140 [ 76.151088][ T5497] el0_svc+0x78/0x1d0 [ 76.151867][ T5497] el0t_64_sync_handler+0xcc/0xe4 [ 76.152758][ T5497] el0t_64_sync+0x1a0/0x1a4 [ 76.154275][ T5497] ------------[ cut here ]------------ [ 76.155433][ T5497] WARNING: CPU: 1 PID: 5497 at fs/btrfs/inode.c:4182 __btrfs_unlink_inode+0x8d8/0xab8 [ 76.156888][ T5497] Modules linked in: [ 76.157578][ T5497] CPU: 1 PID: 5497 Comm: syz.0.44 Tainted: G W syzkaller #0 [ 76.158963][ T5497] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/02/2026 [ 76.160453][ T5497] pstate: 62400005 (nZCv daif +PAN -UAO +TCO -DIT -SSBS BTYPE=--) [ 76.161629][ T5497] pc : __btrfs_unlink_inode+0x8d8/0xab8 [ 76.162624][ T5497] lr : __btrfs_unlink_inode+0x8d8/0xab8 [ 76.163605][ T5497] sp : ffff800022597a80 [ 76.164299][ T5497] x29: ffff800022597b10 x28: 0000000000000104 x27: ffff0000ece2ac10 [ 76.165730][ T5497] x26: 0000000000000100 x25: 00000000fffffff4 x24: ffff0000dd26bf20 [ 76.167133][ T5497] x23: ffff0000e24534d0 x22: ffff0000ce6e2000 x21: 1fffe0001c48a6a5 [ 76.168532][ T5497] x20: ffff0000e2453528 x19: dfff800000000000 x18: 0000000000000000 [ 76.169876][ T5497] x17: 0000000000000000 x16: ffff80001134e478 x15: 0000000000000000 [ 76.171216][ T5497] x14: 0000000000000001 x13: 1fffe000341d2dab x12: 0000000000000000 [ 76.172648][ T5497] x11: ff8080000830061c x10: 0000000000000000 x9 : d9c00cff91805400 [ 76.174013][ T5497] x8 : d9c00cff91805400 x7 : 0000000000000001 x6 : 0000000000000001 [ 76.175416][ T5497] x5 : ffff800022597398 x4 : ffff80001446f500 x3 : ffff80000850f688 [ 76.176750][ T5497] x2 : 0000000000000001 x1 : 0000000100000000 x0 : 0000000000000026 [ 76.178069][ T5497] Call trace: [ 76.178592][ T5497] __btrfs_unlink_inode+0x8d8/0xab8 [ 76.179459][ T5497] btrfs_unlink+0x10c/0x25c [ 76.180268][ T5497] vfs_unlink+0x2e0/0x4f4 [ 76.181033][ T5497] do_unlinkat+0x318/0x624 [ 76.181798][ T5497] __arm64_sys_unlinkat+0xe0/0xfc [ 76.182604][ T5497] invoke_syscall+0x98/0x28c [ 76.183361][ T5497] el0_svc_common+0x13c/0x258 [ 76.184131][ T5497] do_el0_svc+0x5c/0x140 [ 76.184890][ T5497] el0_svc+0x78/0x1d0 [ 76.185523][ T5497] el0t_64_sync_handler+0xcc/0xe4 [ 76.186309][ T5497] el0t_64_sync+0x1a0/0x1a4 [ 76.187044][ T5497] irq event stamp: 78706 [ 76.187748][ T5497] hardirqs last enabled at (78705): [] __up_console_sem+0xb4/0xfc [ 76.189488][ T5497] hardirqs last disabled at (78706): [] el1_dbg+0x24/0x80 [ 76.191300][ T5497] softirqs last enabled at (78696): [] handle_softirqs+0xa70/0xc14 [ 76.193114][ T5497] softirqs last disabled at (78679): [] __irq_exit_rcu+0x240/0x434 [ 76.194992][ T5497] ---[ end trace 149d0c2dff8b1a8e ]--- [ 76.197268][ T5497] BTRFS: error (device loop0) in __btrfs_unlink_inode:4182: errno=-12 Out of memory [ 76.198920][ T5497] BTRFS info (device loop0): forced readonly 1970/01/01 00:01:16 executed programs: 32 [ 76.376453][ T5519] BTRFS: device fsid c9fe44da-de57-406a-8241-57ec7d4412cf devid 1 transid 8 /dev/loop0 scanned by syz.0.45 (5519) [ 76.381035][ T5519] BTRFS info (device loop0): using crc32c (crc32c-generic) checksum algorithm [ 76.382375][ T5519] BTRFS info (device loop0): using free space tree [ 76.383433][ T5519] BTRFS info (device loop0): has skinny extents [ 76.391014][ T5519] BTRFS info (device loop0): enabling ssd optimizations [ 76.395158][ T5519] FAULT_INJECTION: forcing a failure. [ 76.395158][ T5519] name failslab, interval 1, probability 0, space 0, times 0 [ 76.397002][ T5519] CPU: 0 PID: 5519 Comm: syz.0.45 Tainted: G W syzkaller #0 [ 76.398329][ T5519] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/02/2026 [ 76.399828][ T5519] Call trace: [ 76.400305][ T5519] dump_backtrace+0x0/0x458 [ 76.400980][ T5519] show_stack+0x2c/0x3c [ 76.401697][ T5519] __dump_stack+0x30/0x40 [ 76.402344][ T5519] dump_stack_lvl+0xf4/0x15c [ 76.403051][ T5519] dump_stack+0x1c/0x5c [ 76.403701][ T5519] should_fail+0x3c8/0x520 [ 76.404339][ T5519] __should_failslab+0xbc/0x10c [ 76.405114][ T5519] should_failslab+0x10/0x28 [ 76.405841][ T5519] slab_pre_alloc_hook+0x64/0xe8 [ 76.406678][ T5519] kmem_cache_alloc+0x94/0x3d8 [ 76.407454][ T5519] btrfs_alloc_path+0x5c/0x68 [ 76.408328][ T5519] __btrfs_unlink_inode+0x1e0/0xab8 [ 76.409258][ T5519] btrfs_unlink+0x10c/0x25c [ 76.410106][ T5519] vfs_unlink+0x2e0/0x4f4 [ 76.410857][ T5519] do_unlinkat+0x318/0x624 [ 76.411672][ T5519] __arm64_sys_unlinkat+0xe0/0xfc [ 76.412616][ T5519] invoke_syscall+0x98/0x28c [ 76.413477][ T5519] el0_svc_common+0x13c/0x258 [ 76.414260][ T5519] do_el0_svc+0x5c/0x140 [ 76.414936][ T5519] el0_svc+0x78/0x1d0 [ 76.415589][ T5519] el0t_64_sync_handler+0xcc/0xe4 [ 76.416403][ T5519] el0t_64_sync+0x1a0/0x1a4 [ 76.469540][ T4709] BTRFS: device fsid c9fe44da-de57-406a-8241-57ec7d4412cf devid 1 transid 10 /dev/loop0 scanned by udevd (4709) [ 76.617486][ T5540] BTRFS info (device loop0): using crc32c (crc32c-generic) checksum algorithm [ 76.618978][ T5540] BTRFS info (device loop0): using free space tree [ 76.620045][ T5540] BTRFS info (device loop0): has skinny extents [ 76.634625][ T5540] BTRFS info (device loop0): enabling ssd optimizations [ 76.639013][ T5540] FAULT_INJECTION: forcing a failure. [ 76.639013][ T5540] name failslab, interval 1, probability 0, space 0, times 0 [ 76.641093][ T5540] CPU: 0 PID: 5540 Comm: syz.0.46 Tainted: G W syzkaller #0 [ 76.642409][ T5540] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/02/2026 [ 76.643997][ T5540] Call trace: [ 76.644617][ T5540] dump_backtrace+0x0/0x458 [ 76.645415][ T5540] show_stack+0x2c/0x3c [ 76.646197][ T5540] __dump_stack+0x30/0x40 [ 76.646946][ T5540] dump_stack_lvl+0xf4/0x15c [ 76.647704][ T5540] dump_stack+0x1c/0x5c [ 76.648432][ T5540] should_fail+0x3c8/0x520 [ 76.649208][ T5540] __should_failslab+0xbc/0x10c [ 76.650050][ T5540] should_failslab+0x10/0x28 [ 76.650884][ T5540] slab_pre_alloc_hook+0x64/0xe8 [ 76.651750][ T5540] kmem_cache_alloc_trace+0x98/0x3f0 [ 76.652673][ T5540] btrfs_delete_delayed_dir_index+0x22c/0x574 [ 76.653701][ T5540] __btrfs_unlink_inode+0x34c/0xab8 [ 76.654586][ T5540] btrfs_unlink+0x10c/0x25c [ 76.655336][ T5540] vfs_unlink+0x2e0/0x4f4 [ 76.656069][ T5540] do_unlinkat+0x318/0x624 [ 76.656790][ T5540] __arm64_sys_unlinkat+0xe0/0xfc [ 76.657616][ T5540] invoke_syscall+0x98/0x28c [ 76.658396][ T5540] el0_svc_common+0x13c/0x258 [ 76.659210][ T5540] do_el0_svc+0x5c/0x140 [ 76.660005][ T5540] el0_svc+0x78/0x1d0 [ 76.660692][ T5540] el0t_64_sync_handler+0xcc/0xe4 [ 76.661566][ T5540] el0t_64_sync+0x1a0/0x1a4 [ 76.663200][ T5540] ------------[ cut here ]------------ [ 76.664161][ T5540] WARNING: CPU: 0 PID: 5540 at fs/btrfs/inode.c:4182 __btrfs_unlink_inode+0x8d8/0xab8 [ 76.666093][ T5540] Modules linked in: [ 76.666863][ T5540] CPU: 0 PID: 5540 Comm: syz.0.46 Tainted: G W syzkaller #0 [ 76.668343][ T5540] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/02/2026 [ 76.670153][ T5540] pstate: 62400005 (nZCv daif +PAN -UAO +TCO -DIT -SSBS BTYPE=--) [ 76.671610][ T5540] pc : __btrfs_unlink_inode+0x8d8/0xab8 [ 76.672527][ T5540] lr : __btrfs_unlink_inode+0x8d8/0xab8 [ 76.673476][ T5540] sp : ffff8000229b7a80 [ 76.674126][ T5540] x29: ffff8000229b7b10 x28: 0000000000000104 x27: ffff0000ecdff010 [ 76.675509][ T5540] x26: 0000000000000100 x25: 00000000fffffff4 x24: ffff0000da8c4420 [ 76.676955][ T5540] x23: ffff0000de88e790 x22: ffff0000d34dc000 x21: 1fffe0001bd11cfd [ 76.678289][ T5540] x20: ffff0000de88e7e8 x19: dfff800000000000 x18: 0000000000000000 [ 76.679682][ T5540] x17: 0000000000000000 x16: ffff80001134e478 x15: 0000000000000000 [ 76.681121][ T5540] x14: 0000000000000001 x13: 1fffe000341cebab x12: 0000000000000000 [ 76.682499][ T5540] x11: ff8080000830061c x10: 0000000000000000 x9 : a497369c4736c700 [ 76.683959][ T5540] x8 : a497369c4736c700 x7 : 0000000000000001 x6 : 0000000000000001 [ 76.685324][ T5540] x5 : ffff8000229b7398 x4 : ffff80001446f500 x3 : ffff80000850f688 [ 76.686666][ T5540] x2 : 0000000000000001 x1 : 0000000100000000 x0 : 0000000000000026 [ 76.688007][ T5540] Call trace: [ 76.688638][ T5540] __btrfs_unlink_inode+0x8d8/0xab8 [ 76.689563][ T5540] btrfs_unlink+0x10c/0x25c [ 76.690455][ T5540] vfs_unlink+0x2e0/0x4f4 [ 76.691288][ T5540] do_unlinkat+0x318/0x624 [ 76.692171][ T5540] __arm64_sys_unlinkat+0xe0/0xfc [ 76.693064][ T5540] invoke_syscall+0x98/0x28c [ 76.693879][ T5540] el0_svc_common+0x13c/0x258 [ 76.694652][ T5540] do_el0_svc+0x5c/0x140 [ 76.695365][ T5540] el0_svc+0x78/0x1d0 [ 76.696076][ T5540] el0t_64_sync_handler+0xcc/0xe4 [ 76.697049][ T5540] el0t_64_sync+0x1a0/0x1a4 [ 76.697893][ T5540] irq event stamp: 79228 [ 76.698641][ T5540] hardirqs last enabled at (79227): [] __up_console_sem+0xb4/0xfc [ 76.700177][ T5540] hardirqs last disabled at (79228): [] el1_dbg+0x24/0x80 [ 76.701650][ T5540] softirqs last enabled at (79208): [] handle_softirqs+0xa70/0xc14 [ 76.703236][ T5540] softirqs last disabled at (79161): [] __irq_exit_rcu+0x240/0x434 [ 76.704842][ T5540] ---[ end trace 149d0c2dff8b1a8f ]--- [ 76.706599][ T5540] BTRFS: error (device loop0) in __btrfs_unlink_inode:4182: errno=-12 Out of memory [ 76.708107][ T5540] BTRFS info (device loop0): forced readonly [ 76.889837][ T5563] BTRFS: device fsid c9fe44da-de57-406a-8241-57ec7d4412cf devid 1 transid 8 /dev/loop0 scanned by syz.0.47 (5563) [ 76.892833][ T5563] BTRFS info (device loop0): using crc32c (crc32c-generic) checksum algorithm [ 76.894248][ T5563] BTRFS info (device loop0): using free space tree [ 76.895447][ T5563] BTRFS info (device loop0): has skinny extents [ 76.906401][ T5563] BTRFS info (device loop0): enabling ssd optimizations [ 76.910409][ T5563] FAULT_INJECTION: forcing a failure. [ 76.910409][ T5563] name failslab, interval 1, probability 0, space 0, times 0 [ 76.912491][ T5563] CPU: 1 PID: 5563 Comm: syz.0.47 Tainted: G W syzkaller #0 [ 76.913943][ T5563] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/02/2026 [ 76.915618][ T5563] Call trace: [ 76.916188][ T5563] dump_backtrace+0x0/0x458 [ 76.917016][ T5563] show_stack+0x2c/0x3c [ 76.917732][ T5563] __dump_stack+0x30/0x40 [ 76.918434][ T5563] dump_stack_lvl+0xf4/0x15c [ 76.919185][ T5563] dump_stack+0x1c/0x5c [ 76.919829][ T5563] should_fail+0x3c8/0x520 [ 76.920531][ T5563] __should_failslab+0xbc/0x10c [ 76.921278][ T5563] should_failslab+0x10/0x28 [ 76.921997][ T5563] slab_pre_alloc_hook+0x64/0xe8 [ 76.922801][ T5563] kmem_cache_alloc_trace+0x98/0x3f0 [ 76.923716][ T5563] btrfs_delete_delayed_dir_index+0x22c/0x574 [ 76.924681][ T5563] __btrfs_unlink_inode+0x34c/0xab8 [ 76.925493][ T5563] btrfs_unlink+0x10c/0x25c [ 76.926212][ T5563] vfs_unlink+0x2e0/0x4f4 [ 76.926976][ T5563] do_unlinkat+0x318/0x624 [ 76.927698][ T5563] __arm64_sys_unlinkat+0xe0/0xfc [ 76.928460][ T5563] invoke_syscall+0x98/0x28c [ 76.929213][ T5563] el0_svc_common+0x13c/0x258 [ 76.929953][ T5563] do_el0_svc+0x5c/0x140 [ 76.930593][ T5563] el0_svc+0x78/0x1d0 [ 76.931210][ T5563] el0t_64_sync_handler+0xcc/0xe4 [ 76.932025][ T5563] el0t_64_sync+0x1a0/0x1a4 [ 76.933857][ T5563] ------------[ cut here ]------------ [ 76.934905][ T5563] WARNING: CPU: 1 PID: 5563 at fs/btrfs/inode.c:4182 __btrfs_unlink_inode+0x8d8/0xab8 [ 76.936274][ T5563] Modules linked in: [ 76.936845][ T5563] CPU: 1 PID: 5563 Comm: syz.0.47 Tainted: G W syzkaller #0 [ 76.938137][ T5563] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/02/2026 [ 76.939692][ T5563] pstate: 62400005 (nZCv daif +PAN -UAO +TCO -DIT -SSBS BTYPE=--) [ 76.940846][ T5563] pc : __btrfs_unlink_inode+0x8d8/0xab8 [ 76.941858][ T5563] lr : __btrfs_unlink_inode+0x8d8/0xab8 [ 76.942723][ T5563] sp : ffff8000230e7a80 [ 76.943340][ T5563] x29: ffff8000230e7b10 x28: 0000000000000104 x27: ffff0000ece28010 [ 76.944680][ T5563] x26: 0000000000000100 x25: 00000000fffffff4 x24: ffff0000d0f0f9a0 [ 76.945941][ T5563] x23: ffff0000e2453840 x22: ffff0000cfada000 x21: 1fffe0001c48a713 [ 76.947293][ T5563] x20: ffff0000e2453898 x19: dfff800000000000 x18: 0000000000000000 [ 76.948601][ T5563] x17: 0000000000000000 x16: ffff80001134e478 x15: 0000000000000000 [ 76.949987][ T5563] x14: 0000000000000001 x13: 1fffe000341d2dab x12: 0000000000000000 [ 76.951249][ T5563] x11: ff8080000830061c x10: 0000000000000000 x9 : 1f1d8ae925a87a00 [ 76.952554][ T5563] x8 : 1f1d8ae925a87a00 x7 : 0000000000000001 x6 : 0000000000000001 [ 76.953839][ T5563] x5 : ffff8000230e7398 x4 : ffff80001446f500 x3 : ffff80000850f688 [ 76.955343][ T5563] x2 : 0000000000000001 x1 : 0000000100000000 x0 : 0000000000000026 [ 76.956607][ T5563] Call trace: [ 76.957160][ T5563] __btrfs_unlink_inode+0x8d8/0xab8 [ 76.958078][ T5563] btrfs_unlink+0x10c/0x25c [ 76.958902][ T5563] vfs_unlink+0x2e0/0x4f4 [ 76.959746][ T5563] do_unlinkat+0x318/0x624 [ 76.960542][ T5563] __arm64_sys_unlinkat+0xe0/0xfc [ 76.961542][ T5563] invoke_syscall+0x98/0x28c [ 76.962409][ T5563] el0_svc_common+0x13c/0x258 [ 76.963269][ T5563] do_el0_svc+0x5c/0x140 [ 76.964048][ T5563] el0_svc+0x78/0x1d0 [ 76.964875][ T5563] el0t_64_sync_handler+0xcc/0xe4 [ 76.965878][ T5563] el0t_64_sync+0x1a0/0x1a4 [ 76.966769][ T5563] irq event stamp: 78618 [ 76.967508][ T5563] hardirqs last enabled at (78617): [] __up_console_sem+0xb4/0xfc [ 76.969105][ T5563] hardirqs last disabled at (78618): [] el1_dbg+0x24/0x80 [ 76.970879][ T5563] softirqs last enabled at (78608): [] handle_softirqs+0xa70/0xc14 [ 76.972794][ T5563] softirqs last disabled at (78595): [] __irq_exit_rcu+0x240/0x434 [ 76.974529][ T5563] ---[ end trace 149d0c2dff8b1a90 ]--- [ 76.975681][ T5563] BTRFS: error (device loop0) in __btrfs_unlink_inode:4182: errno=-12 Out of memory [ 76.977216][ T5563] BTRFS info (device loop0): forced readonly [ 77.199236][ T5585] BTRFS: device fsid c9fe44da-de57-406a-8241-57ec7d4412cf devid 1 transid 8 /dev/loop0 scanned by syz.0.48 (5585) [ 77.202422][ T5585] BTRFS info (device loop0): using crc32c (crc32c-generic) checksum algorithm [ 77.203759][ T5585] BTRFS info (device loop0): using free space tree [ 77.204813][ T5585] BTRFS info (device loop0): has skinny extents [ 77.213210][ T5585] BTRFS info (device loop0): enabling ssd optimizations [ 77.217902][ T5585] FAULT_INJECTION: forcing a failure. [ 77.217902][ T5585] name failslab, interval 1, probability 0, space 0, times 0 [ 77.219873][ T5585] CPU: 0 PID: 5585 Comm: syz.0.48 Tainted: G W syzkaller #0 [ 77.221125][ T5585] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/02/2026 [ 77.222596][ T5585] Call trace: [ 77.223078][ T5585] dump_backtrace+0x0/0x458 [ 77.223755][ T5585] show_stack+0x2c/0x3c [ 77.224316][ T5585] __dump_stack+0x30/0x40 [ 77.225025][ T5585] dump_stack_lvl+0xf4/0x15c [ 77.225751][ T5585] dump_stack+0x1c/0x5c [ 77.226478][ T5585] should_fail+0x3c8/0x520 [ 77.227186][ T5585] __should_failslab+0xbc/0x10c [ 77.227956][ T5585] should_failslab+0x10/0x28 [ 77.228709][ T5585] slab_pre_alloc_hook+0x64/0xe8 [ 77.229530][ T5585] kmem_cache_alloc_trace+0x98/0x3f0 [ 77.230417][ T5585] btrfs_delete_delayed_dir_index+0x22c/0x574 [ 77.231545][ T5585] __btrfs_unlink_inode+0x34c/0xab8 [ 77.232544][ T5585] btrfs_unlink+0x10c/0x25c [ 77.233417][ T5585] vfs_unlink+0x2e0/0x4f4 [ 77.234142][ T5585] do_unlinkat+0x318/0x624 [ 77.234892][ T5585] __arm64_sys_unlinkat+0xe0/0xfc [ 77.235700][ T5585] invoke_syscall+0x98/0x28c [ 77.236442][ T5585] el0_svc_common+0x13c/0x258 [ 77.237243][ T5585] do_el0_svc+0x5c/0x140 [ 77.238022][ T5585] el0_svc+0x78/0x1d0 [ 77.238682][ T5585] el0t_64_sync_handler+0xcc/0xe4 [ 77.239544][ T5585] el0t_64_sync+0x1a0/0x1a4 [ 77.241968][ T5585] ------------[ cut here ]------------ [ 77.242982][ T5585] WARNING: CPU: 0 PID: 5585 at fs/btrfs/inode.c:4182 __btrfs_unlink_inode+0x8d8/0xab8 [ 77.244428][ T5585] Modules linked in: [ 77.245045][ T5585] CPU: 0 PID: 5585 Comm: syz.0.48 Tainted: G W syzkaller #0 [ 77.246466][ T5585] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/02/2026 [ 77.248172][ T5585] pstate: 62400005 (nZCv daif +PAN -UAO +TCO -DIT -SSBS BTYPE=--) [ 77.249520][ T5585] pc : __btrfs_unlink_inode+0x8d8/0xab8 [ 77.250474][ T5585] lr : __btrfs_unlink_inode+0x8d8/0xab8 [ 77.251555][ T5585] sp : ffff8000231e7a80 [ 77.252338][ T5585] x29: ffff8000231e7b10 x28: 0000000000000104 x27: ffff0000ece2b010 [ 77.253692][ T5585] x26: 0000000000000100 x25: 00000000fffffff4 x24: ffff0000da8c46e0 [ 77.255018][ T5585] x23: ffff0000de88e6e0 x22: ffff0000d5a44000 x21: 1fffe0001bd11ce7