Warning: Permanently added '10.128.1.94' (ED25519) to the list of known hosts. 1970/01/01 00:01:04 ignoring optional flag "type"="gce" 1970/01/01 00:01:04 parsed 1 programs [ 65.704158][ T4396] Adding 124996k swap on ./swap-file. Priority:0 extents:1 across:124996k SSFS [ 66.971188][ T325] wlan0: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 66.972595][ T325] wlan0: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 66.975279][ T1656] IPv6: ADDRCONF(NETDEV_CHANGE): wlan0: link becomes ready [ 66.981693][ T325] wlan1: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 66.982957][ T325] wlan1: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 66.985459][ T1656] IPv6: ADDRCONF(NETDEV_CHANGE): wlan1: link becomes ready [ 67.266475][ T4548] chnl_net:caif_netlink_parms(): no params data found [ 67.283700][ T4548] bridge0: port 1(bridge_slave_0) entered blocking state [ 67.285028][ T4548] bridge0: port 1(bridge_slave_0) entered disabled state [ 67.286548][ T4548] device bridge_slave_0 entered promiscuous mode [ 67.288436][ T4548] bridge0: port 2(bridge_slave_1) entered blocking state [ 67.289593][ T4548] bridge0: port 2(bridge_slave_1) entered disabled state [ 67.291108][ T4548] device bridge_slave_1 entered promiscuous mode [ 67.301367][ T4548] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 67.304759][ T4548] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 67.312371][ T4548] team0: Port device team_slave_0 added [ 67.314296][ T4548] team0: Port device team_slave_1 added [ 67.321147][ T4548] batman_adv: batadv0: Adding interface: batadv_slave_0 [ 67.322213][ T4548] 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. [ 67.326565][ T4548] batman_adv: batadv0: Not using interface batadv_slave_0 (retrying later): interface not active [ 67.328886][ T4548] batman_adv: batadv0: Adding interface: batadv_slave_1 [ 67.329981][ T4548] 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. [ 67.334441][ T4548] batman_adv: batadv0: Not using interface batadv_slave_1 (retrying later): interface not active [ 67.395064][ T4548] device hsr_slave_0 entered promiscuous mode [ 67.434122][ T4548] device hsr_slave_1 entered promiscuous mode [ 67.980262][ T4548] netdevsim netdevsim0 netdevsim0: renamed from eth0 [ 68.005318][ T4548] netdevsim netdevsim0 netdevsim1: renamed from eth1 [ 68.045176][ T4548] netdevsim netdevsim0 netdevsim2: renamed from eth2 [ 68.064706][ T4548] netdevsim netdevsim0 netdevsim3: renamed from eth3 [ 68.122079][ T4548] 8021q: adding VLAN 0 to HW filter on device bond0 [ 68.126385][ T1656] IPv6: ADDRCONF(NETDEV_CHANGE): veth1: link becomes ready [ 68.127970][ T1656] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 68.130901][ T4548] 8021q: adding VLAN 0 to HW filter on device team0 [ 68.133422][ T325] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bridge: link becomes ready [ 68.135170][ T325] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 68.136654][ T325] bridge0: port 1(bridge_slave_0) entered blocking state [ 68.137657][ T325] bridge0: port 1(bridge_slave_0) entered forwarding state [ 68.139643][ T325] IPv6: ADDRCONF(NETDEV_CHANGE): bridge0: link becomes ready [ 68.142992][ T325] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bridge: link becomes ready [ 68.144938][ T325] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 68.146401][ T325] bridge0: port 2(bridge_slave_1) entered blocking state [ 68.147438][ T325] bridge0: port 2(bridge_slave_1) entered forwarding state [ 68.152615][ T325] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bond: link becomes ready [ 68.154833][ T325] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bond: link becomes ready [ 68.156511][ T325] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_team: link becomes ready [ 68.158568][ T325] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 68.163470][ T4548] hsr0: Slave A (hsr_slave_0) is not up; please bring it up to get a fully working HSR network [ 68.167247][ T4548] hsr0: Slave B (hsr_slave_1) is not up; please bring it up to get a fully working HSR network [ 68.173037][ T325] IPv6: ADDRCONF(NETDEV_CHANGE): team0: link becomes ready [ 68.175309][ T325] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_team: link becomes ready [ 68.177081][ T325] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 68.178581][ T325] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_hsr: link becomes ready [ 68.180046][ T325] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 68.181692][ T325] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_hsr: link becomes ready [ 68.183060][ T325] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 68.184928][ T325] IPv6: ADDRCONF(NETDEV_CHANGE): hsr0: link becomes ready [ 68.225218][ T148] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan1: link becomes ready [ 68.226578][ T148] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan0: link becomes ready [ 68.230361][ T4548] 8021q: adding VLAN 0 to HW filter on device batadv0 [ 68.241693][ T325] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_virt_wifi: link becomes ready [ 68.243332][ T325] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_virt_wifi: link becomes ready [ 68.245552][ T325] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_vlan: link becomes ready [ 68.247091][ T325] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_vlan: link becomes ready [ 68.249801][ T4548] device veth0_vlan entered promiscuous mode [ 68.251472][ T325] IPv6: ADDRCONF(NETDEV_CHANGE): vlan0: link becomes ready [ 68.252934][ T325] IPv6: ADDRCONF(NETDEV_CHANGE): vlan1: link becomes ready [ 68.256574][ T4548] device veth1_vlan entered promiscuous mode [ 68.263506][ T4548] device veth0_macvtap entered promiscuous mode [ 68.266708][ T325] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan0: link becomes ready [ 68.268198][ T325] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan1: link becomes ready [ 68.271038][ T325] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_macvtap: link becomes ready [ 68.272632][ T325] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_macvtap: link becomes ready [ 68.285691][ T325] IPv6: ADDRCONF(NETDEV_CHANGE): macvtap0: link becomes ready [ 68.289146][ T4548] device veth1_macvtap entered promiscuous mode [ 68.297000][ T4548] batman_adv: batadv0: Interface activated: batadv_slave_0 [ 68.298380][ T148] IPv6: ADDRCONF(NETDEV_CHANGE): macsec0: link becomes ready [ 68.299924][ T148] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_0: link becomes ready [ 68.301431][ T148] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_batadv: link becomes ready [ 68.304416][ T4548] batman_adv: batadv0: Interface activated: batadv_slave_1 [ 68.306734][ T4548] netdevsim netdevsim0 netdevsim0: set [1, 0] type 2 family 0 port 6081 - 0 [ 68.308076][ T4548] netdevsim netdevsim0 netdevsim1: set [1, 0] type 2 family 0 port 6081 - 0 [ 68.309500][ T4548] netdevsim netdevsim0 netdevsim2: set [1, 0] type 2 family 0 port 6081 - 0 [ 68.310954][ T4548] netdevsim netdevsim0 netdevsim3: set [1, 0] type 2 family 0 port 6081 - 0 [ 68.312867][ T325] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_1: link becomes ready [ 68.314479][ T325] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_batadv: link becomes ready 1970/01/01 00:01:08 executed programs: 0 [ 68.506626][ T4678] chnl_net:caif_netlink_parms(): no params data found [ 68.527338][ T4678] bridge0: port 1(bridge_slave_0) entered blocking state [ 68.528498][ T4678] bridge0: port 1(bridge_slave_0) entered disabled state [ 68.530235][ T4678] device bridge_slave_0 entered promiscuous mode [ 68.532257][ T4678] bridge0: port 2(bridge_slave_1) entered blocking state [ 68.533384][ T4678] bridge0: port 2(bridge_slave_1) entered disabled state [ 68.536244][ T4678] device bridge_slave_1 entered promiscuous mode [ 68.545275][ T4678] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 68.548878][ T4678] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 68.557811][ T4678] team0: Port device team_slave_0 added [ 68.559597][ T4678] team0: Port device team_slave_1 added [ 68.567084][ T4678] batman_adv: batadv0: Adding interface: batadv_slave_0 [ 68.568215][ T4678] 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. [ 68.572341][ T4678] batman_adv: batadv0: Not using interface batadv_slave_0 (retrying later): interface not active [ 68.576566][ T4678] batman_adv: batadv0: Adding interface: batadv_slave_1 [ 68.577708][ T4678] 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. [ 68.582014][ T4678] batman_adv: batadv0: Not using interface batadv_slave_1 (retrying later): interface not active [ 68.635151][ T4678] device hsr_slave_0 entered promiscuous mode [ 68.684242][ T4678] device hsr_slave_1 entered promiscuous mode [ 68.704397][ T4678] debugfs: Directory 'hsr0' with parent 'hsr' already present! [ 68.705739][ T4678] Cannot create hsr debugfs directory [ 68.735193][ T4678] netdevsim netdevsim0 netdevsim3 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 69.624845][ T2065] ieee802154 phy0 wpan0: encryption failed: -22 [ 69.625717][ T7] cfg80211: failed to load regulatory.db [ 69.626099][ T2065] ieee802154 phy1 wpan1: encryption failed: -22 [ 70.503898][ T4167] Bluetooth: hci0: command 0x0409 tx timeout [ 71.247562][ T4678] netdevsim netdevsim0 netdevsim2 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 72.583886][ T4167] Bluetooth: hci0: command 0x041b tx timeout [ 73.727260][ T4678] netdevsim netdevsim0 netdevsim1 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 73.788311][ T4678] netdevsim netdevsim0 netdevsim0 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 73.922851][ T4678] netdevsim netdevsim0 netdevsim0: renamed from eth0 [ 73.955220][ T4678] netdevsim netdevsim0 netdevsim1: renamed from eth1 [ 74.036079][ T4678] netdevsim netdevsim0 netdevsim2: renamed from eth2 [ 74.085616][ T4678] netdevsim netdevsim0 netdevsim3: renamed from eth3 [ 74.175547][ T4678] 8021q: adding VLAN 0 to HW filter on device bond0 [ 74.179971][ T136] IPv6: ADDRCONF(NETDEV_CHANGE): veth1: link becomes ready [ 74.181700][ T136] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 74.184727][ T4678] 8021q: adding VLAN 0 to HW filter on device team0 [ 74.187182][ T136] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bridge: link becomes ready [ 74.188845][ T136] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 74.190381][ T136] bridge0: port 1(bridge_slave_0) entered blocking state [ 74.191562][ T136] bridge0: port 1(bridge_slave_0) entered forwarding state [ 74.192956][ T136] IPv6: ADDRCONF(NETDEV_CHANGE): bridge0: link becomes ready [ 74.203691][ T325] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bridge: link becomes ready [ 74.205495][ T325] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 74.206954][ T325] bridge0: port 2(bridge_slave_1) entered blocking state [ 74.208162][ T325] bridge0: port 2(bridge_slave_1) entered forwarding state [ 74.209498][ T325] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bond: link becomes ready [ 74.211113][ T325] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bond: link becomes ready [ 74.212722][ T325] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_team: link becomes ready [ 74.215466][ T325] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 74.217046][ T325] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_team: link becomes ready [ 74.218564][ T325] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 74.220173][ T325] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_hsr: link becomes ready [ 74.221653][ T325] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 74.223143][ T325] IPv6: ADDRCONF(NETDEV_CHANGE): team0: link becomes ready [ 74.226844][ T325] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_hsr: link becomes ready [ 74.228352][ T325] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 74.230596][ T4678] IPv6: ADDRCONF(NETDEV_CHANGE): hsr0: link becomes ready [ 74.271656][ T4678] 8021q: adding VLAN 0 to HW filter on device batadv0 [ 74.276155][ T1656] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan1: link becomes ready [ 74.277515][ T1656] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan0: link becomes ready [ 74.282327][ T1656] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_virt_wifi: link becomes ready [ 74.285855][ T1656] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_virt_wifi: link becomes ready [ 74.292411][ T1656] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_vlan: link becomes ready [ 74.295453][ T1656] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_vlan: link becomes ready [ 74.297537][ T1656] IPv6: ADDRCONF(NETDEV_CHANGE): vlan0: link becomes ready [ 74.298928][ T1656] IPv6: ADDRCONF(NETDEV_CHANGE): vlan1: link becomes ready [ 74.301139][ T4678] device veth0_vlan entered promiscuous mode [ 74.305065][ T4678] device veth1_vlan entered promiscuous mode [ 74.315256][ T4678] device veth0_macvtap entered promiscuous mode [ 74.316605][ T1656] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan0: link becomes ready [ 74.318120][ T1656] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan1: link becomes ready [ 74.319556][ T1656] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_macvtap: link becomes ready [ 74.321166][ T1656] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_macvtap: link becomes ready [ 74.322617][ T1656] IPv6: ADDRCONF(NETDEV_CHANGE): macvtap0: link becomes ready [ 74.326482][ T4678] device veth1_macvtap entered promiscuous mode [ 74.331126][ T4678] batman_adv: The newly added mac address (aa:aa:aa:aa:aa:3e) already exists on: batadv_slave_0 [ 74.332906][ T4678] batman_adv: It is strongly recommended to keep mac addresses unique to avoid problems! [ 74.336214][ T4678] batman_adv: batadv0: Interface activated: batadv_slave_0 [ 74.337434][ T148] IPv6: ADDRCONF(NETDEV_CHANGE): macsec0: link becomes ready [ 74.339064][ T148] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_0: link becomes ready [ 74.340640][ T148] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_batadv: link becomes ready [ 74.343004][ T4678] batman_adv: The newly added mac address (aa:aa:aa:aa:aa:3f) already exists on: batadv_slave_1 [ 74.344787][ T4678] batman_adv: It is strongly recommended to keep mac addresses unique to avoid problems! [ 74.347296][ T4678] batman_adv: batadv0: Interface activated: batadv_slave_1 [ 74.348555][ T148] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_1: link becomes ready [ 74.350264][ T148] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_batadv: link becomes ready [ 74.352784][ T4678] netdevsim netdevsim0 netdevsim0: set [1, 0] type 2 family 0 port 6081 - 0 [ 74.354660][ T4678] netdevsim netdevsim0 netdevsim1: set [1, 0] type 2 family 0 port 6081 - 0 [ 74.356088][ T4678] netdevsim netdevsim0 netdevsim2: set [1, 0] type 2 family 0 port 6081 - 0 [ 74.357523][ T4678] netdevsim netdevsim0 netdevsim3: set [1, 0] type 2 family 0 port 6081 - 0 [ 74.373758][ T148] wlan0: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 74.376523][ T148] wlan0: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 74.635644][ T136] IPv6: ADDRCONF(NETDEV_CHANGE): wlan0: link becomes ready [ 74.642993][ T136] wlan1: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 74.644407][ T136] wlan1: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 74.645952][ T136] IPv6: ADDRCONF(NETDEV_CHANGE): wlan1: link becomes ready 1970/01/01 00:01:14 executed programs: 2 [ 74.663986][ T4168] Bluetooth: hci0: command 0x040f tx timeout [ 74.760321][ T4933] loop0: detected capacity change from 0 to 32768 [ 74.801010][ T4933] BTRFS: device fsid c9fe44da-de57-406a-8241-57ec7d4412cf devid 1 transid 8 /dev/loop0 scanned by syz.0.15 (4933) [ 74.806727][ T4933] BTRFS info (device loop0): using crc32c (crc32c-generic) checksum algorithm [ 74.808388][ T4933] BTRFS info (device loop0): using free space tree [ 74.809405][ T4933] BTRFS info (device loop0): has skinny extents [ 74.830084][ T4933] BTRFS info (device loop0): enabling ssd optimizations [ 74.842703][ T4933] FAULT_INJECTION: forcing a failure. [ 74.842703][ T4933] name failslab, interval 1, probability 0, space 0, times 1 [ 74.845205][ T4933] CPU: 0 PID: 4933 Comm: syz.0.15 Not tainted syzkaller #0 [ 74.846296][ T4933] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/18/2026 [ 74.847904][ T4933] Call trace: [ 74.848407][ T4933] dump_backtrace+0x0/0x458 [ 74.849079][ T4933] show_stack+0x2c/0x3c [ 74.849705][ T4933] __dump_stack+0x30/0x40 [ 74.850393][ T4933] dump_stack_lvl+0xf4/0x15c [ 74.851139][ T4933] dump_stack+0x1c/0x5c [ 74.851850][ T4933] should_fail+0x3bc/0x514 [ 74.852508][ T4933] __should_failslab+0xbc/0x10c [ 74.853364][ T4933] should_failslab+0x10/0x28 [ 74.854080][ T4933] slab_pre_alloc_hook+0x64/0xe8 [ 74.854936][ T4933] kmem_cache_alloc+0x94/0x3d4 [ 74.855670][ T4933] btrfs_alloc_path+0x5c/0x68 [ 74.856405][ T4933] __btrfs_unlink_inode+0x1dc/0xaec [ 74.857320][ T4933] btrfs_unlink+0x108/0x258 [ 74.858071][ T4933] vfs_unlink+0x2e0/0x4f4 [ 74.858803][ T4933] do_unlinkat+0x328/0x618 [ 74.859499][ T4933] __arm64_sys_unlinkat+0xe0/0xfc [ 74.860234][ T4933] invoke_syscall+0x98/0x2b0 [ 74.861049][ T4933] el0_svc_common+0x138/0x258 [ 74.861854][ T4933] do_el0_svc+0x58/0x13c [ 74.862576][ T4933] el0_svc+0x78/0x1d0 [ 74.863264][ T4933] el0t_64_sync_handler+0xcc/0xe4 [ 74.864119][ T4933] el0t_64_sync+0x1a0/0x1a4 [ 75.021963][ T4960] loop0: detected capacity change from 0 to 32768 [ 75.055065][ T4960] BTRFS: device fsid c9fe44da-de57-406a-8241-57ec7d4412cf devid 1 transid 8 /dev/loop0 scanned by syz.0.16 (4960) [ 75.058927][ T4960] BTRFS info (device loop0): using crc32c (crc32c-generic) checksum algorithm [ 75.060498][ T4960] BTRFS info (device loop0): using free space tree [ 75.061587][ T4960] BTRFS info (device loop0): has skinny extents [ 75.081959][ T4960] BTRFS info (device loop0): enabling ssd optimizations [ 75.088409][ T4960] FAULT_INJECTION: forcing a failure. [ 75.088409][ T4960] name failslab, interval 1, probability 0, space 0, times 0 [ 75.090435][ T4960] CPU: 0 PID: 4960 Comm: syz.0.16 Not tainted syzkaller #0 [ 75.091609][ T4960] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/18/2026 [ 75.093360][ T4960] Call trace: [ 75.093858][ T4960] dump_backtrace+0x0/0x458 [ 75.094590][ T4960] show_stack+0x2c/0x3c [ 75.095293][ T4960] __dump_stack+0x30/0x40 [ 75.096063][ T4960] dump_stack_lvl+0xf4/0x15c [ 75.096880][ T4960] dump_stack+0x1c/0x5c [ 75.097569][ T4960] should_fail+0x3bc/0x514 [ 75.098319][ T4960] __should_failslab+0xbc/0x10c [ 75.099178][ T4960] should_failslab+0x10/0x28 [ 75.099919][ T4960] slab_pre_alloc_hook+0x64/0xe8 [ 75.100737][ T4960] kmem_cache_alloc_trace+0x98/0x3ec [ 75.101649][ T4960] btrfs_delete_delayed_dir_index+0x22c/0x56c [ 75.102658][ T4960] __btrfs_unlink_inode+0x350/0xaec [ 75.103572][ T4960] btrfs_unlink+0x108/0x258 [ 75.104346][ T4960] vfs_unlink+0x2e0/0x4f4 [ 75.105068][ T4960] do_unlinkat+0x328/0x618 [ 75.105819][ T4960] __arm64_sys_unlinkat+0xe0/0xfc [ 75.106627][ T4960] invoke_syscall+0x98/0x2b0 [ 75.107428][ T4960] el0_svc_common+0x138/0x258 [ 75.108162][ T4960] do_el0_svc+0x58/0x13c [ 75.108827][ T4960] el0_svc+0x78/0x1d0 [ 75.109510][ T4960] el0t_64_sync_handler+0xcc/0xe4 [ 75.110271][ T4960] el0t_64_sync+0x1a0/0x1a4 [ 75.114233][ T4960] ------------[ cut here ]------------ [ 75.115213][ T4960] WARNING: CPU: 0 PID: 4960 at fs/btrfs/inode.c:4182 __btrfs_unlink_inode+0x904/0xaec [ 75.116654][ T4960] Modules linked in: [ 75.117298][ T4960] CPU: 0 PID: 4960 Comm: syz.0.16 Not tainted syzkaller #0 [ 75.118456][ T4960] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/18/2026 [ 75.120115][ T4960] pstate: 62400005 (nZCv daif +PAN -UAO +TCO -DIT -SSBS BTYPE=--) [ 75.121460][ T4960] pc : __btrfs_unlink_inode+0x904/0xaec [ 75.122317][ T4960] lr : __btrfs_unlink_inode+0x904/0xaec [ 75.123225][ T4960] sp : ffff80001f957a60 [ 75.123859][ T4960] x29: ffff80001f957b10 x28: ffff0000c0ecc000 x27: ffff0000e2b7c410 [ 75.125220][ T4960] x26: 0000000000000100 x25: 00000000fffffff4 x24: ffff0000de582a50 [ 75.126598][ T4960] x23: ffff700003f2af54 x22: dfff800000000000 x21: ffff0000e2a3a740 [ 75.127997][ T4960] x20: ffff0000de904268 x19: 1fffe0001bd2084d x18: 0000000000000001 [ 75.129334][ T4960] x17: 0000000000000000 x16: ffff80001125f448 x15: 00000000ffffffff [ 75.130649][ T4960] x14: 0000000000000001 x13: 1fffe000341f05ab x12: 0000000000ff0100 [ 75.132000][ T4960] x11: 0000000000000000 x10: 0000000000000000 x9 : 6840da79e8823b00 [ 75.133387][ T4960] x8 : 6840da79e8823b00 x7 : 0000000000000001 x6 : 0000000000000001 [ 75.134825][ T4960] x5 : ffff80001f957378 x4 : ffff80001437f3e0 x3 : ffff800008509220 [ 75.136131][ T4960] x2 : 0000000000000001 x1 : 0000000100000000 x0 : 0000000000000026 [ 75.137439][ T4960] Call trace: [ 75.137939][ T4960] __btrfs_unlink_inode+0x904/0xaec [ 75.138843][ T4960] btrfs_unlink+0x108/0x258 [ 75.139614][ T4960] vfs_unlink+0x2e0/0x4f4 [ 75.140375][ T4960] do_unlinkat+0x328/0x618 [ 75.141145][ T4960] __arm64_sys_unlinkat+0xe0/0xfc [ 75.142016][ T4960] invoke_syscall+0x98/0x2b0 [ 75.142785][ T4960] el0_svc_common+0x138/0x258 [ 75.143640][ T4960] do_el0_svc+0x58/0x13c [ 75.144362][ T4960] el0_svc+0x78/0x1d0 [ 75.145136][ T4960] el0t_64_sync_handler+0xcc/0xe4 [ 75.145932][ T4960] el0t_64_sync+0x1a0/0x1a4 [ 75.146676][ T4960] irq event stamp: 79540 [ 75.147384][ T4960] hardirqs last enabled at (79539): [] __up_console_sem+0xb4/0xfc [ 75.148993][ T4960] hardirqs last disabled at (79540): [] el1_dbg+0x24/0x80 [ 75.150566][ T4960] softirqs last enabled at (79520): [] handle_softirqs+0xa40/0xbe4 [ 75.152217][ T4960] softirqs last disabled at (79469): [] __irq_exit_rcu+0x240/0x43c [ 75.153898][ T4960] ---[ end trace 4581dd724c861e43 ]--- [ 75.159384][ T4960] BTRFS: error (device loop0) in __btrfs_unlink_inode:4182: errno=-12 Out of memory [ 75.160932][ T4960] BTRFS info (device loop0): forced readonly [ 75.345642][ T4982] loop0: detected capacity change from 0 to 32768 [ 75.352954][ T4982] BTRFS: device fsid c9fe44da-de57-406a-8241-57ec7d4412cf devid 1 transid 8 /dev/loop0 scanned by syz.0.17 (4982) [ 75.360911][ T4982] BTRFS info (device loop0): using crc32c (crc32c-generic) checksum algorithm [ 75.362365][ T4982] BTRFS info (device loop0): using free space tree [ 75.363443][ T4982] BTRFS info (device loop0): has skinny extents [ 75.378438][ T4982] BTRFS info (device loop0): enabling ssd optimizations [ 75.382458][ T4982] FAULT_INJECTION: forcing a failure. [ 75.382458][ T4982] name failslab, interval 1, probability 0, space 0, times 0 [ 75.386127][ T4982] CPU: 0 PID: 4982 Comm: syz.0.17 Tainted: G W syzkaller #0 [ 75.387580][ T4982] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/18/2026 [ 75.389252][ T4982] Call trace: [ 75.389777][ T4982] dump_backtrace+0x0/0x458 [ 75.390501][ T4982] show_stack+0x2c/0x3c [ 75.391280][ T4982] __dump_stack+0x30/0x40 [ 75.392036][ T4982] dump_stack_lvl+0xf4/0x15c [ 75.392790][ T4982] dump_stack+0x1c/0x5c [ 75.393481][ T4982] should_fail+0x3bc/0x514 [ 75.394237][ T4982] __should_failslab+0xbc/0x10c [ 75.395050][ T4982] should_failslab+0x10/0x28 [ 75.395809][ T4982] slab_pre_alloc_hook+0x64/0xe8 [ 75.396653][ T4982] kmem_cache_alloc_trace+0x98/0x3ec [ 75.397545][ T4982] btrfs_delete_delayed_dir_index+0x22c/0x56c [ 75.398586][ T4982] __btrfs_unlink_inode+0x350/0xaec [ 75.399435][ T4982] btrfs_unlink+0x108/0x258 [ 75.400159][ T4982] vfs_unlink+0x2e0/0x4f4 [ 75.400844][ T4982] do_unlinkat+0x328/0x618 [ 75.401548][ T4982] __arm64_sys_unlinkat+0xe0/0xfc [ 75.402303][ T4982] invoke_syscall+0x98/0x2b0 [ 75.403089][ T4982] el0_svc_common+0x138/0x258 [ 75.403905][ T4982] do_el0_svc+0x58/0x13c [ 75.404639][ T4982] el0_svc+0x78/0x1d0 [ 75.405314][ T4982] el0t_64_sync_handler+0xcc/0xe4 [ 75.406162][ T4982] el0t_64_sync+0x1a0/0x1a4 [ 75.409849][ T4982] ------------[ cut here ]------------ [ 75.410789][ T4982] WARNING: CPU: 0 PID: 4982 at fs/btrfs/inode.c:4182 __btrfs_unlink_inode+0x904/0xaec [ 75.412321][ T4982] Modules linked in: [ 75.412974][ T4982] CPU: 0 PID: 4982 Comm: syz.0.17 Tainted: G W syzkaller #0 [ 75.414372][ T4982] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/18/2026 [ 75.416032][ T4982] pstate: 62400005 (nZCv daif +PAN -UAO +TCO -DIT -SSBS BTYPE=--) [ 75.417364][ T4982] pc : __btrfs_unlink_inode+0x904/0xaec [ 75.418286][ T4982] lr : __btrfs_unlink_inode+0x904/0xaec [ 75.419211][ T4982] sp : ffff80001fb27a60 [ 75.419916][ T4982] x29: ffff80001fb27b10 x28: ffff0000ebbb8000 x27: ffff0000e2b7c810 [ 75.421305][ T4982] x26: 0000000000000100 x25: 00000000fffffff4 x24: ffff0000c9920bb0 [ 75.422634][ T4982] x23: ffff700003f64f54 x22: dfff800000000000 x21: ffff0000e2a3ce80 [ 75.423976][ T4982] x20: ffff0000de9043c8 x19: 1fffe0001bd20879 x18: 0000000000000001 [ 75.425249][ T4982] x17: 0000000000000000 x16: ffff80001125f448 x15: 00000000ffffffff [ 75.426574][ T4982] x14: 0000000000000001 x13: 1fffe000341f05ab x12: 0000000000ff0100 [ 75.427885][ T4982] x11: 0000000000000000 x10: 0000000000000000 x9 : 8ae4ddfbad008a00 [ 75.429131][ T4982] x8 : 8ae4ddfbad008a00 x7 : 0000000000000001 x6 : 0000000000000001 [ 75.430443][ T4982] x5 : ffff80001fb27378 x4 : ffff80001437f3e0 x3 : ffff800008509220 [ 75.431784][ T4982] x2 : 0000000000000001 x1 : 0000000100000000 x0 : 0000000000000026 [ 75.433127][ T4982] Call trace: [ 75.433669][ T4982] __btrfs_unlink_inode+0x904/0xaec [ 75.434462][ T4982] btrfs_unlink+0x108/0x258 [ 75.435228][ T4982] vfs_unlink+0x2e0/0x4f4 [ 75.435909][ T4982] do_unlinkat+0x328/0x618 [ 75.436677][ T4982] __arm64_sys_unlinkat+0xe0/0xfc [ 75.437519][ T4982] invoke_syscall+0x98/0x2b0 [ 75.438312][ T4982] el0_svc_common+0x138/0x258 [ 75.439079][ T4982] do_el0_svc+0x58/0x13c [ 75.439867][ T4982] el0_svc+0x78/0x1d0 [ 75.440656][ T4982] el0t_64_sync_handler+0xcc/0xe4 [ 75.441535][ T4982] el0t_64_sync+0x1a0/0x1a4 [ 75.442344][ T4982] irq event stamp: 79488 [ 75.443026][ T4982] hardirqs last enabled at (79487): [] __up_console_sem+0xb4/0xfc [ 75.444655][ T4982] hardirqs last disabled at (79488): [] el1_dbg+0x24/0x80 [ 75.446135][ T4982] softirqs last enabled at (79468): [] handle_softirqs+0xa40/0xbe4 [ 75.447710][ T4982] softirqs last disabled at (79379): [] __irq_exit_rcu+0x240/0x43c [ 75.449216][ T4982] ---[ end trace 4581dd724c861e44 ]--- [ 75.452082][ T4982] BTRFS: error (device loop0) in __btrfs_unlink_inode:4182: errno=-12 Out of memory [ 75.453659][ T4982] BTRFS info (device loop0): forced readonly [ 75.619485][ T5003] loop0: detected capacity change from 0 to 32768 [ 75.680412][ T5003] BTRFS: device fsid c9fe44da-de57-406a-8241-57ec7d4412cf devid 1 transid 8 /dev/loop0 scanned by syz.0.18 (5003) [ 75.684524][ T5003] BTRFS info (device loop0): using crc32c (crc32c-generic) checksum algorithm [ 75.686024][ T5003] BTRFS info (device loop0): using free space tree [ 75.687101][ T5003] BTRFS info (device loop0): has skinny extents [ 75.701004][ T5003] BTRFS info (device loop0): enabling ssd optimizations [ 75.709361][ T5003] FAULT_INJECTION: forcing a failure. [ 75.709361][ T5003] name failslab, interval 1, probability 0, space 0, times 0 [ 75.711638][ T5003] CPU: 0 PID: 5003 Comm: syz.0.18 Tainted: G W syzkaller #0 [ 75.712955][ T5003] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/18/2026 [ 75.714613][ T5003] Call trace: [ 75.715176][ T5003] dump_backtrace+0x0/0x458 [ 75.715901][ T5003] show_stack+0x2c/0x3c [ 75.716577][ T5003] __dump_stack+0x30/0x40 [ 75.717304][ T5003] dump_stack_lvl+0xf4/0x15c [ 75.718080][ T5003] dump_stack+0x1c/0x5c [ 75.718738][ T5003] should_fail+0x3bc/0x514 [ 75.719475][ T5003] __should_failslab+0xbc/0x10c [ 75.720293][ T5003] should_failslab+0x10/0x28 [ 75.721070][ T5003] slab_pre_alloc_hook+0x64/0xe8 [ 75.721915][ T5003] kmem_cache_alloc_trace+0x98/0x3ec [ 75.722791][ T5003] btrfs_delete_delayed_dir_index+0x22c/0x56c [ 75.723791][ T5003] __btrfs_unlink_inode+0x350/0xaec [ 75.724656][ T5003] btrfs_unlink+0x108/0x258 [ 75.725433][ T5003] vfs_unlink+0x2e0/0x4f4 [ 75.726138][ T5003] do_unlinkat+0x328/0x618 [ 75.726833][ T5003] __arm64_sys_unlinkat+0xe0/0xfc [ 75.727620][ T5003] invoke_syscall+0x98/0x2b0 [ 75.728420][ T5003] el0_svc_common+0x138/0x258 [ 75.729217][ T5003] do_el0_svc+0x58/0x13c [ 75.729908][ T5003] el0_svc+0x78/0x1d0 [ 75.730618][ T5003] el0t_64_sync_handler+0xcc/0xe4 [ 75.731479][ T5003] el0t_64_sync+0x1a0/0x1a4 [ 75.735011][ T5003] ------------[ cut here ]------------ [ 75.735907][ T5003] WARNING: CPU: 0 PID: 5003 at fs/btrfs/inode.c:4182 __btrfs_unlink_inode+0x904/0xaec [ 75.737345][ T5003] Modules linked in: [ 75.737931][ T5003] CPU: 0 PID: 5003 Comm: syz.0.18 Tainted: G W syzkaller #0 [ 75.739320][ T5003] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/18/2026 [ 75.741125][ T5003] pstate: 62400005 (nZCv daif +PAN -UAO +TCO -DIT -SSBS BTYPE=--) [ 75.742388][ T5003] pc : __btrfs_unlink_inode+0x904/0xaec [ 75.743269][ T5003] lr : __btrfs_unlink_inode+0x904/0xaec [ 75.744122][ T5003] sp : ffff80001fc67a60 [ 75.744783][ T5003] x29: ffff80001fc67b10 x28: ffff0000c2f50000 x27: ffff0000e2b7cc10 [ 75.746107][ T5003] x26: 0000000000000100 x25: 00000000fffffff4 x24: ffff0000cf6c5d10 [ 75.747509][ T5003] x23: ffff700003f8cf54 x22: dfff800000000000 x21: ffff0000e2a3f5c0 [ 75.748795][ T5003] x20: ffff0000de904528 x19: 1fffe0001bd208a5 x18: 0000000000000001 [ 75.750141][ T5003] x17: 0000000000000000 x16: ffff80001125f448 x15: 00000000ffffffff [ 75.751462][ T5003] x14: 0000000000000001 x13: 1fffe000341f05ab x12: 0000000000ff0100 [ 75.752814][ T5003] x11: 0000000000000000 x10: 0000000000000000 x9 : 64bd31976ae27f00 [ 75.754188][ T5003] x8 : 64bd31976ae27f00 x7 : 0000000000000001 x6 : 0000000000000001 [ 75.755492][ T5003] x5 : ffff80001fc67378 x4 : ffff80001437f3e0 x3 : ffff800008509220 [ 75.756771][ T5003] x2 : 0000000000000001 x1 : 0000000100000000 x0 : 0000000000000026 [ 75.757985][ T5003] Call trace: [ 75.758468][ T5003] __btrfs_unlink_inode+0x904/0xaec [ 75.759304][ T5003] btrfs_unlink+0x108/0x258 [ 75.760052][ T5003] vfs_unlink+0x2e0/0x4f4 [ 75.760796][ T5003] do_unlinkat+0x328/0x618 [ 75.761546][ T5003] __arm64_sys_unlinkat+0xe0/0xfc [ 75.762364][ T5003] invoke_syscall+0x98/0x2b0 [ 75.763152][ T5003] el0_svc_common+0x138/0x258 [ 75.763922][ T5003] do_el0_svc+0x58/0x13c [ 75.764603][ T5003] el0_svc+0x78/0x1d0 [ 75.765220][ T5003] el0t_64_sync_handler+0xcc/0xe4 [ 75.766015][ T5003] el0t_64_sync+0x1a0/0x1a4 [ 75.766695][ T5003] irq event stamp: 79136 [ 75.767314][ T5003] hardirqs last enabled at (79135): [] __up_console_sem+0xb4/0xfc [ 75.768855][ T5003] hardirqs last disabled at (79136): [] el1_dbg+0x24/0x80 [ 75.770327][ T5003] softirqs last enabled at (79116): [] handle_softirqs+0xa40/0xbe4 [ 75.771894][ T5003] softirqs last disabled at (79105): [] __irq_exit_rcu+0x240/0x43c [ 75.773455][ T5003] ---[ end trace 4581dd724c861e45 ]--- [ 75.776761][ T5003] BTRFS: error (device loop0) in __btrfs_unlink_inode:4182: errno=-12 Out of memory [ 75.778416][ T5003] BTRFS info (device loop0): forced readonly [ 75.968858][ T5025] loop0: detected capacity change from 0 to 32768 [ 76.043962][ T5025] BTRFS: device fsid c9fe44da-de57-406a-8241-57ec7d4412cf devid 1 transid 8 /dev/loop0 scanned by syz.0.19 (5025) [ 76.062682][ T5025] BTRFS info (device loop0): using crc32c (crc32c-generic) checksum algorithm [ 76.064434][ T5025] BTRFS info (device loop0): using free space tree [ 76.065506][ T5025] BTRFS info (device loop0): has skinny extents [ 76.072982][ T5025] BTRFS info (device loop0): enabling ssd optimizations [ 76.077708][ T5025] FAULT_INJECTION: forcing a failure. [ 76.077708][ T5025] name failslab, interval 1, probability 0, space 0, times 0 [ 76.079761][ T5025] CPU: 0 PID: 5025 Comm: syz.0.19 Tainted: G W syzkaller #0 [ 76.081315][ T5025] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/18/2026 [ 76.083074][ T5025] Call trace: [ 76.083618][ T5025] dump_backtrace+0x0/0x458 [ 76.084475][ T5025] show_stack+0x2c/0x3c [ 76.085146][ T5025] __dump_stack+0x30/0x40 [ 76.085851][ T5025] dump_stack_lvl+0xf4/0x15c [ 76.086596][ T5025] dump_stack+0x1c/0x5c [ 76.087291][ T5025] should_fail+0x3bc/0x514 [ 76.087975][ T5025] __should_failslab+0xbc/0x10c [ 76.088748][ T5025] should_failslab+0x10/0x28 [ 76.089474][ T5025] slab_pre_alloc_hook+0x64/0xe8 [ 76.090358][ T5025] kmem_cache_alloc_trace+0x98/0x3ec [ 76.091241][ T5025] btrfs_delete_delayed_dir_index+0x22c/0x56c [ 76.092244][ T5025] __btrfs_unlink_inode+0x350/0xaec [ 76.093070][ T5025] btrfs_unlink+0x108/0x258 [ 76.093783][ T5025] vfs_unlink+0x2e0/0x4f4 [ 76.094514][ T5025] do_unlinkat+0x328/0x618 [ 76.095239][ T5025] __arm64_sys_unlinkat+0xe0/0xfc [ 76.096048][ T5025] invoke_syscall+0x98/0x2b0 [ 76.096846][ T5025] el0_svc_common+0x138/0x258 [ 76.097579][ T5025] do_el0_svc+0x58/0x13c [ 76.098243][ T5025] el0_svc+0x78/0x1d0 [ 76.098888][ T5025] el0t_64_sync_handler+0xcc/0xe4 [ 76.099709][ T5025] el0t_64_sync+0x1a0/0x1a4 [ 76.100629][ T5025] ------------[ cut here ]------------ [ 76.101638][ T5025] WARNING: CPU: 0 PID: 5025 at fs/btrfs/inode.c:4182 __btrfs_unlink_inode+0x904/0xaec [ 76.103072][ T5025] Modules linked in: [ 76.103649][ T5025] CPU: 0 PID: 5025 Comm: syz.0.19 Tainted: G W syzkaller #0 [ 76.105123][ T5025] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/18/2026 [ 76.106745][ T5025] pstate: 62400005 (nZCv daif +PAN -UAO +TCO -DIT -SSBS BTYPE=--) [ 76.108045][ T5025] pc : __btrfs_unlink_inode+0x904/0xaec [ 76.108971][ T5025] lr : __btrfs_unlink_inode+0x904/0xaec [ 76.109819][ T5025] sp : ffff80001f977a60 [ 76.110515][ T5025] x29: ffff80001f977b10 x28: ffff0000c8890000 x27: ffff0000e2b7d010 [ 76.111761][ T5025] x26: 0000000000000100 x25: 00000000fffffff4 x24: ffff0000cf892e70 [ 76.113098][ T5025] x23: ffff700003f2ef54 x22: dfff800000000000 x21: ffff0000ec479d70 [ 76.114439][ T5025] x20: ffff0000de904688 x19: 1fffe0001bd208d1 x18: 0000000000000001 [ 76.115803][ T5025] x17: 0000000000000000 x16: ffff800008304af8 x15: 00000000ffffffff [ 76.117185][ T5025] x14: 0000000000000001 x13: 1ffff00003f2ee6c x12: 0000000000ff0100 [ 76.118553][ T5025] x11: 0000000000000000 x10: 0000000000000000 x9 : 0bc9a9f571ecad00 [ 76.119916][ T5025] x8 : 0bc9a9f571ecad00 x7 : 0000000000000001 x6 : 0000000000000001 [ 76.121284][ T5025] x5 : ffff80001f977378 x4 : ffff80001437f3e0 x3 : ffff800008304c08 [ 76.122625][ T5025] x2 : 0000000000000001 x1 : 0000000100000000 x0 : 0000000000000026 [ 76.123923][ T5025] Call trace: [ 76.124480][ T5025] __btrfs_unlink_inode+0x904/0xaec [ 76.125378][ T5025] btrfs_unlink+0x108/0x258 [ 76.126065][ T5025] vfs_unlink+0x2e0/0x4f4 [ 76.126769][ T5025] do_unlinkat+0x328/0x618 [ 76.127529][ T5025] __arm64_sys_unlinkat+0xe0/0xfc [ 76.128365][ T5025] invoke_syscall+0x98/0x2b0 [ 76.129149][ T5025] el0_svc_common+0x138/0x258 [ 76.129897][ T5025] do_el0_svc+0x58/0x13c [ 76.130593][ T5025] el0_svc+0x78/0x1d0 [ 76.131216][ T5025] el0t_64_sync_handler+0xcc/0xe4 [ 76.132060][ T5025] el0t_64_sync+0x1a0/0x1a4 [ 76.132794][ T5025] irq event stamp: 79978 [ 76.133486][ T5025] hardirqs last enabled at (79977): [] __up_console_sem+0xb4/0xfc [ 76.135044][ T5025] hardirqs last disabled at (79978): [] el1_dbg+0x24/0x80 [ 76.136402][ T5025] softirqs last enabled at (79958): [] handle_softirqs+0xa40/0xbe4 [ 76.137874][ T5025] softirqs last disabled at (79913): [] __irq_exit_rcu+0x240/0x43c [ 76.139412][ T5025] ---[ end trace 4581dd724c861e46 ]--- [ 76.141022][ T5025] BTRFS: error (device loop0) in __btrfs_unlink_inode:4182: errno=-12 Out of memory [ 76.142508][ T5025] BTRFS info (device loop0): forced readonly [ 76.266950][ T9] device hsr_slave_0 left promiscuous mode [ 76.294288][ T9] device hsr_slave_1 left promiscuous mode [ 76.332725][ T5047] loop0: detected capacity change from 0 to 32768 [ 76.377832][ T9] batman_adv: batadv0: Interface deactivated: batadv_slave_0 [ 76.379092][ T9] batman_adv: batadv0: Removing interface: batadv_slave_0 [ 76.380654][ T9] batman_adv: batadv0: Interface deactivated: batadv_slave_1 [ 76.381823][ T9] batman_adv: batadv0: Removing interface: batadv_slave_1 [ 76.383236][ T9] device bridge_slave_1 left promiscuous mode [ 76.384392][ T9] bridge0: port 2(bridge_slave_1) entered disabled state [ 76.386961][ T5047] BTRFS: device fsid c9fe44da-de57-406a-8241-57ec7d4412cf devid 1 transid 8 /dev/loop0 scanned by syz.0.20 (5047) [ 76.392212][ T5047] BTRFS info (device loop0): using crc32c (crc32c-generic) checksum algorithm [ 76.393621][ T5047] BTRFS info (device loop0): using free space tree [ 76.395121][ T5047] BTRFS info (device loop0): has skinny extents [ 76.415385][ T5047] BTRFS info (device loop0): enabling ssd optimizations [ 76.419589][ T5047] FAULT_INJECTION: forcing a failure. [ 76.419589][ T5047] name failslab, interval 1, probability 0, space 0, times 0 [ 76.421675][ T5047] CPU: 0 PID: 5047 Comm: syz.0.20 Tainted: G W syzkaller #0 [ 76.423025][ T5047] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/18/2026 [ 76.424684][ T5047] Call trace: [ 76.425241][ T5047] dump_backtrace+0x0/0x458 [ 76.426013][ T5047] show_stack+0x2c/0x3c [ 76.426718][ T5047] __dump_stack+0x30/0x40 [ 76.427459][ T5047] dump_stack_lvl+0xf4/0x15c [ 76.428230][ T5047] dump_stack+0x1c/0x5c [ 76.428888][ T5047] should_fail+0x3bc/0x514 [ 76.429629][ T5047] __should_failslab+0xbc/0x10c [ 76.430464][ T5047] should_failslab+0x10/0x28 [ 76.431255][ T5047] slab_pre_alloc_hook+0x64/0xe8 [ 76.432093][ T5047] kmem_cache_alloc+0x94/0x3d4 [ 76.432892][ T5047] btrfs_alloc_path+0x5c/0x68 [ 76.433676][ T5047] __btrfs_unlink_inode+0x1dc/0xaec [ 76.434567][ T5047] btrfs_unlink+0x108/0x258 [ 76.435306][ T5047] vfs_unlink+0x2e0/0x4f4 [ 76.436047][ T5047] do_unlinkat+0x328/0x618 [ 76.436761][ T5047] __arm64_sys_unlinkat+0xe0/0xfc [ 76.437606][ T5047] invoke_syscall+0x98/0x2b0 [ 76.438348][ T5047] el0_svc_common+0x138/0x258 [ 76.439159][ T5047] do_el0_svc+0x58/0x13c [ 76.439852][ T5047] el0_svc+0x78/0x1d0 [ 76.440511][ T5047] el0t_64_sync_handler+0xcc/0xe4 [ 76.441330][ T5047] el0t_64_sync+0x1a0/0x1a4 [ 76.444897][ T9] device bridge_slave_0 left promiscuous mode [ 76.446522][ T9] bridge0: port 1(bridge_slave_0) entered disabled state [ 76.573993][ T9] device veth1_macvtap left promiscuous mode [ 76.574984][ T9] device veth0_macvtap left promiscuous mode [ 76.576030][ T9] device veth1_vlan left promiscuous mode [ 76.576990][ T9] device veth0_vlan left promiscuous mode [ 76.588411][ T5071] loop0: detected capacity change from 0 to 32768 [ 76.600637][ T5071] BTRFS: device fsid c9fe44da-de57-406a-8241-57ec7d4412cf devid 1 transid 8 /dev/loop0 scanned by syz.0.21 (5071) [ 76.605834][ T5071] BTRFS info (device loop0): using crc32c (crc32c-generic) checksum algorithm [ 76.608413][ T5071] BTRFS info (device loop0): using free space tree [ 76.609667][ T5071] BTRFS info (device loop0): has skinny extents [ 76.660313][ T5071] BTRFS info (device loop0): enabling ssd optimizations [ 76.668077][ T5071] FAULT_INJECTION: forcing a failure. [ 76.668077][ T5071] name failslab, interval 1, probability 0, space 0, times 0 [ 76.671571][ T5071] CPU: 0 PID: 5071 Comm: syz.0.21 Tainted: G W syzkaller #0 [ 76.672886][ T5071] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/18/2026 [ 76.674506][ T5071] Call trace: [ 76.674980][ T5071] dump_backtrace+0x0/0x458 [ 76.675637][ T5071] show_stack+0x2c/0x3c [ 76.676214][ T5071] __dump_stack+0x30/0x40 [ 76.676827][ T5071] dump_stack_lvl+0xf4/0x15c [ 76.677636][ T5071] dump_stack+0x1c/0x5c [ 76.678311][ T5071] should_fail+0x3bc/0x514 [ 76.679069][ T5071] __should_failslab+0xbc/0x10c [ 76.679870][ T5071] should_failslab+0x10/0x28 [ 76.680607][ T5071] slab_pre_alloc_hook+0x64/0xe8 [ 76.681399][ T5071] kmem_cache_alloc_trace+0x98/0x3ec [ 76.682242][ T5071] btrfs_delete_delayed_dir_index+0x22c/0x56c [ 76.683245][ T5071] __btrfs_unlink_inode+0x350/0xaec [ 76.684065][ T5071] btrfs_unlink+0x108/0x258 [ 76.684742][ T5071] vfs_unlink+0x2e0/0x4f4 [ 76.685428][ T5071] do_unlinkat+0x328/0x618 [ 76.686108][ T5071] __arm64_sys_unlinkat+0xe0/0xfc [ 76.686961][ T5071] invoke_syscall+0x98/0x2b0 [ 76.687725][ T5071] el0_svc_common+0x138/0x258 [ 76.688482][ T5071] do_el0_svc+0x58/0x13c [ 76.689201][ T5071] el0_svc+0x78/0x1d0 [ 76.689818][ T5071] el0t_64_sync_handler+0xcc/0xe4 [ 76.690641][ T5071] el0t_64_sync+0x1a0/0x1a4 [ 76.691700][ T5071] ------------[ cut here ]------------ [ 76.692744][ T5071] WARNING: CPU: 0 PID: 5071 at fs/btrfs/inode.c:4182 __btrfs_unlink_inode+0x904/0xaec [ 76.694364][ T5071] Modules linked in: [ 76.695026][ T5071] CPU: 0 PID: 5071 Comm: syz.0.21 Tainted: G W syzkaller #0 [ 76.696484][ T5071] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/18/2026 [ 76.698154][ T5071] pstate: 62400005 (nZCv daif +PAN -UAO +TCO -DIT -SSBS BTYPE=--) [ 76.699321][ T5071] pc : __btrfs_unlink_inode+0x904/0xaec [ 76.700231][ T5071] lr : __btrfs_unlink_inode+0x904/0xaec [ 76.701151][ T5071] sp : ffff8000203e7a60 [ 76.701878][ T5071] x29: ffff8000203e7b10 x28: ffff0000cb1a0000 x27: ffff0000e2b7d810 [ 76.703223][ T5071] x26: 0000000000000100 x25: 00000000fffffff4 x24: ffff0000d9d34840 [ 76.704516][ T5071] x23: ffff70000407cf54 x22: dfff800000000000 x21: ffff0000ec47e220 [ 76.705885][ T5071] x20: ffff0000de904948 x19: 1fffe0001bd20929 x18: 0000000000000001 [ 76.707269][ T5071] x17: 0000000000000000 x16: ffff800008304af8 x15: 00000000ffffffff [ 76.708684][ T5071] x14: 0000000000000001 x13: 1ffff0000407ce6c x12: 0000000000ff0100 [ 76.709987][ T5071] x11: 0000000000000000 x10: 0000000000000000 x9 : eb67fd7cfee73c00 [ 76.711381][ T5071] x8 : eb67fd7cfee73c00 x7 : 0000000000000001 x6 : 0000000000000001 [ 76.712684][ T5071] x5 : ffff8000203e7378 x4 : ffff80001437f3e0 x3 : ffff800008304c08 [ 76.714028][ T5071] x2 : 0000000000000001 x1 : 0000000100000000 x0 : 0000000000000026 [ 76.715309][ T5071] Call trace: [ 76.715840][ T5071] __btrfs_unlink_inode+0x904/0xaec [ 76.716660][ T5071] btrfs_unlink+0x108/0x258 [ 76.717405][ T5071] vfs_unlink+0x2e0/0x4f4 [ 76.718064][ T5071] do_unlinkat+0x328/0x618 [ 76.718727][ T5071] __arm64_sys_unlinkat+0xe0/0xfc [ 76.719537][ T5071] invoke_syscall+0x98/0x2b0 [ 76.720264][ T5071] el0_svc_common+0x138/0x258 [ 76.720996][ T5071] do_el0_svc+0x58/0x13c [ 76.721768][ T5071] el0_svc+0x78/0x1d0 [ 76.722422][ T5071] el0t_64_sync_handler+0xcc/0xe4 [ 76.723261][ T5071] el0t_64_sync+0x1a0/0x1a4 [ 76.724031][ T5071] irq event stamp: 79060 [ 76.724792][ T5071] hardirqs last enabled at (79059): [] __up_console_sem+0xb4/0xfc [ 76.726333][ T5071] hardirqs last disabled at (79060): [] el1_dbg+0x24/0x80 [ 76.727820][ T5071] softirqs last enabled at (79040): [] handle_softirqs+0xa40/0xbe4 [ 76.729252][ T5071] softirqs last disabled at (78987): [] __irq_exit_rcu+0x240/0x43c [ 76.730866][ T5071] ---[ end trace 4581dd724c861e47 ]--- [ 76.732312][ T5071] BTRFS: error (device loop0) in __btrfs_unlink_inode:4182: errno=-12 Out of memory [ 76.733493][ T9] team0 (unregistering): Port device team_slave_1 removed [ 76.733901][ T5071] BTRFS info (device loop0): forced readonly [ 76.744172][ T4162] Bluetooth: hci0: command 0x0419 tx timeout [ 76.746403][ T9] team0 (unregistering): Port device team_slave_0 removed [ 76.758402][ T9] bond0 (unregistering): (slave bond_slave_1): Releasing backup interface [ 76.805527][ T9] bond0 (unregistering): (slave bond_slave_0): Releasing backup interface [ 76.916678][ T9] bond0 (unregistering): Released all slaves [ 76.925292][ T5092] loop0: detected capacity change from 0 to 32768 [ 76.933285][ T5092] BTRFS: device fsid c9fe44da-de57-406a-8241-57ec7d4412cf devid 1 transid 8 /dev/loop0 scanned by syz.0.22 (5092) [ 76.945509][ T5092] BTRFS info (device loop0): using crc32c (crc32c-generic) checksum algorithm [ 76.947109][ T5092] BTRFS info (device loop0): using free space tree [ 76.948212][ T5092] BTRFS info (device loop0): has skinny extents [ 76.959790][ T5092] BTRFS info (device loop0): enabling ssd optimizations [ 76.964592][ T5092] FAULT_INJECTION: forcing a failure. [ 76.964592][ T5092] name failslab, interval 1, probability 0, space 0, times 0 [ 76.966723][ T5092] CPU: 1 PID: 5092 Comm: syz.0.22 Tainted: G W syzkaller #0 [ 76.968183][ T5092] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/18/2026 [ 76.969882][ T5092] Call trace: [ 76.970437][ T5092] dump_backtrace+0x0/0x458 [ 76.971208][ T5092] show_stack+0x2c/0x3c [ 76.971870][ T5092] __dump_stack+0x30/0x40 [ 76.972579][ T5092] dump_stack_lvl+0xf4/0x15c [ 76.973271][ T5092] dump_stack+0x1c/0x5c [ 76.973922][ T5092] should_fail+0x3bc/0x514 [ 76.974659][ T5092] __should_failslab+0xbc/0x10c [ 76.975447][ T5092] should_failslab+0x10/0x28 [ 76.976205][ T5092] slab_pre_alloc_hook+0x64/0xe8 [ 76.977063][ T5092] kmem_cache_alloc_trace+0x98/0x3ec [ 76.977942][ T5092] btrfs_delete_delayed_dir_index+0x22c/0x56c [ 76.978968][ T5092] __btrfs_unlink_inode+0x350/0xaec [ 76.979756][ T5092] btrfs_unlink+0x108/0x258 [ 76.980501][ T5092] vfs_unlink+0x2e0/0x4f4 [ 76.981228][ T5092] do_unlinkat+0x328/0x618 [ 76.981975][ T5092] __arm64_sys_unlinkat+0xe0/0xfc [ 76.982777][ T5092] invoke_syscall+0x98/0x2b0 [ 76.983497][ T5092] el0_svc_common+0x138/0x258 [ 76.984224][ T5092] do_el0_svc+0x58/0x13c [ 76.984870][ T5092] el0_svc+0x78/0x1d0 [ 76.985539][ T5092] el0t_64_sync_handler+0xcc/0xe4 [ 76.986384][ T5092] el0t_64_sync+0x1a0/0x1a4 [ 76.988724][ T5092] ------------[ cut here ]------------ [ 76.989710][ T5092] WARNING: CPU: 1 PID: 5092 at fs/btrfs/inode.c:4182 __btrfs_unlink_inode+0x904/0xaec [ 76.991239][ T5092] Modules linked in: [ 76.991833][ T5092] CPU: 1 PID: 5092 Comm: syz.0.22 Tainted: G W syzkaller #0 [ 76.993205][ T5092] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/18/2026 [ 76.994785][ T5092] pstate: 62400005 (nZCv daif +PAN -UAO +TCO -DIT -SSBS BTYPE=--) [ 76.996089][ T5092] pc : __btrfs_unlink_inode+0x904/0xaec [ 76.997000][ T5092] lr : __btrfs_unlink_inode+0x904/0xaec [ 76.997971][ T5092] sp : ffff8000203e7a60 [ 76.998677][ T5092] x29: ffff8000203e7b10 x28: ffff0000dc1ba000 x27: ffff0000e2bc8010 [ 77.000000][ T5092] x26: 0000000000000100 x25: 00000000fffffff4 x24: ffff0000da3276e0 [ 77.001283][ T5092] x23: ffff70000407cf54 x22: dfff800000000000 x21: ffff0000ec41a740 [ 77.002650][ T5092] x20: ffff0000deba73c8 x19: 1fffe0001bd74e79 x18: 0000000000000001 [ 77.003995][ T5092] x17: 0000000000000000 x16: ffff80001125f448 x15: 00000000ffffffff [ 77.005406][ T5092] x14: 0000000000000001 x13: 1fffe000341f47ab x12: 0000000000ff0100 [ 77.006712][ T5092] x11: 0000000000000000 x10: 0000000000000000 x9 : d8db1df9f8198000 [ 77.008032][ T5092] x8 : d8db1df9f8198000 x7 : 0000000000000001 x6 : 0000000000000001 [ 77.009347][ T5092] x5 : ffff8000203e7378 x4 : ffff80001437f3e0 x3 : ffff800008509220 [ 77.010635][ T5092] x2 : 0000000000000001 x1 : 0000000100000000 x0 : 0000000000000026 [ 77.011954][ T5092] Call trace: [ 77.012503][ T5092] __btrfs_unlink_inode+0x904/0xaec [ 77.013341][ T5092] btrfs_unlink+0x108/0x258 [ 77.014069][ T5092] vfs_unlink+0x2e0/0x4f4 [ 77.014788][ T5092] do_unlinkat+0x328/0x618 [ 77.015486][ T5092] __arm64_sys_unlinkat+0xe0/0xfc [ 77.016273][ T5092] invoke_syscall+0x98/0x2b0 [ 77.016995][ T5092] el0_svc_common+0x138/0x258 [ 77.017716][ T5092] do_el0_svc+0x58/0x13c [ 77.018362][ T5092] el0_svc+0x78/0x1d0 [ 77.018948][ T5092] el0t_64_sync_handler+0xcc/0xe4 [ 77.019710][ T5092] el0t_64_sync+0x1a0/0x1a4 [ 77.020369][ T5092] irq event stamp: 79672 [ 77.020983][ T5092] hardirqs last enabled at (79671): [] __up_console_sem+0xb4/0xfc [ 77.022408][ T5092] hardirqs last disabled at (79672): [] el1_dbg+0x24/0x80 [ 77.023801][ T5092] softirqs last enabled at (79652): [] handle_softirqs+0xa40/0xbe4 [ 77.025330][ T5092] softirqs last disabled at (79595): [] __irq_exit_rcu+0x240/0x43c [ 77.026897][ T5092] ---[ end trace 4581dd724c861e48 ]--- [ 77.029620][ T5092] BTRFS: error (device loop0) in __btrfs_unlink_inode:4182: errno=-12 Out of memory [ 77.031124][ T5092] BTRFS info (device loop0): forced readonly [ 77.170880][ T5114] loop0: detected capacity change from 0 to 32768 [ 77.215065][ T5114] BTRFS: device fsid c9fe44da-de57-406a-8241-57ec7d4412cf devid 1 transid 8 /dev/loop0 scanned by syz.0.23 (5114) [ 77.259602][ T5114] BTRFS info (device loop0): using crc32c (crc32c-generic) checksum algorithm [ 77.261121][ T5114] BTRFS info (device loop0): using free space tree [ 77.262212][ T5114] BTRFS info (device loop0): has skinny extents [ 77.282355][ T5114] BTRFS info (device loop0): enabling ssd optimizations [ 77.286449][ T5114] FAULT_INJECTION: forcing a failure. [ 77.286449][ T5114] name failslab, interval 1, probability 0, space 0, times 0 [ 77.288488][ T5114] CPU: 0 PID: 5114 Comm: syz.0.23 Tainted: G W syzkaller #0 [ 77.289769][ T5114] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/18/2026 [ 77.291238][ T5114] Call trace: [ 77.291712][ T5114] dump_backtrace+0x0/0x458 [ 77.292385][ T5114] show_stack+0x2c/0x3c [ 77.292970][ T5114] __dump_stack+0x30/0x40 [ 77.293600][ T5114] dump_stack_lvl+0xf4/0x15c [ 77.294261][ T5114] dump_stack+0x1c/0x5c [ 77.294847][ T5114] should_fail+0x3bc/0x514 [ 77.295507][ T5114] __should_failslab+0xbc/0x10c [ 77.296282][ T5114] should_failslab+0x10/0x28 [ 77.296996][ T5114] slab_pre_alloc_hook+0x64/0xe8 [ 77.297777][ T5114] kmem_cache_alloc_trace+0x98/0x3ec [ 77.298583][ T5114] btrfs_delete_delayed_dir_index+0x22c/0x56c [ 77.299534][ T5114] __btrfs_unlink_inode+0x350/0xaec [ 77.300435][ T5114] btrfs_unlink+0x108/0x258 [ 77.301205][ T5114] vfs_unlink+0x2e0/0x4f4 [ 77.301955][ T5114] do_unlinkat+0x328/0x618 [ 77.302709][ T5114] __arm64_sys_unlinkat+0xe0/0xfc [ 77.303515][ T5114] invoke_syscall+0x98/0x2b0 [ 77.304222][ T5114] el0_svc_common+0x138/0x258 [ 77.305009][ T5114] do_el0_svc+0x58/0x13c [ 77.305733][ T5114] el0_svc+0x78/0x1d0 [ 77.306420][ T5114] el0t_64_sync_handler+0xcc/0xe4 [ 77.307234][ T5114] el0t_64_sync+0x1a0/0x1a4 [ 77.310953][ T5114] ------------[ cut here ]------------ [ 77.311874][ T5114] WARNING: CPU: 0 PID: 5114 at fs/btrfs/inode.c:4182 __btrfs_unlink_inode+0x904/0xaec [ 77.313358][ T5114] Modules linked in: [ 77.313999][ T5114] CPU: 0 PID: 5114 Comm: syz.0.23 Tainted: G W syzkaller #0 [ 77.315449][ T5114] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/18/2026 [ 77.317114][ T5114] pstate: 62400005 (nZCv daif +PAN -UAO +TCO -DIT -SSBS BTYPE=--) [ 77.318414][ T5114] pc : __btrfs_unlink_inode+0x904/0xaec [ 77.319331][ T5114] lr : __btrfs_unlink_inode+0x904/0xaec [ 77.320266][ T5114] sp : ffff800020407a60 [ 77.320969][ T5114] x29: ffff800020407b10 x28: ffff0000d2758000 x27: ffff0000e2b7dc10 [ 77.322293][ T5114] x26: 0000000000000100 x25: 00000000fffffff4 x24: ffff0000e85818f0 [ 77.323516][ T5114] x23: ffff700004080f54 x22: dfff800000000000 x21: ffff0000ec5793a0 [ 77.324805][ T5114] x20: ffff0000de904aa8 x19: 1fffe0001bd20955 x18: 0000000000000001 [ 77.326103][ T5114] x17: 0000000000000000 x16: ffff80001125f448 x15: 00000000ffffffff [ 77.327464][ T5114] x14: 0000000000000001 x13: 1fffe000341f05ab x12: 0000000000ff0100 [ 77.328776][ T5114] x11: 0000000000000000 x10: 0000000000000000 x9 : b7934ff455020b00 [ 77.330142][ T5114] x8 : b7934ff455020b00 x7 : 0000000000000001 x6 : 0000000000000001 [ 77.331557][ T5114] x5 : ffff800020407378 x4 : ffff80001437f3e0 x3 : ffff800008509220 [ 77.332924][ T5114] x2 : 0000000000000001 x1 : 0000000100000000 x0 : 0000000000000026 [ 77.334269][ T5114] Call trace: [ 77.334849][ T5114] __btrfs_unlink_inode+0x904/0xaec [ 77.335682][ T5114] btrfs_unlink+0x108/0x258 [ 77.336413][ T5114] vfs_unlink+0x2e0/0x4f4 [ 77.337162][ T5114] do_unlinkat+0x328/0x618 [ 77.337853][ T5114] __arm64_sys_unlinkat+0xe0/0xfc [ 77.338655][ T5114] invoke_syscall+0x98/0x2b0 [ 77.339377][ T5114] el0_svc_common+0x138/0x258 [ 77.340139][ T5114] do_el0_svc+0x58/0x13c [ 77.340827][ T5114] el0_svc+0x78/0x1d0 [ 77.341422][ T5114] el0t_64_sync_handler+0xcc/0xe4 [ 77.342293][ T5114] el0t_64_sync+0x1a0/0x1a4 [ 77.343038][ T5114] irq event stamp: 79192 [ 77.343695][ T5114] hardirqs last enabled at (79191): [] __up_console_sem+0xb4/0xfc [ 77.345244][ T5114] hardirqs last disabled at (79192): [] el1_dbg+0x24/0x80 [ 77.346691][ T5114] softirqs last enabled at (79172): [] handle_softirqs+0xa40/0xbe4 [ 77.348259][ T5114] softirqs last disabled at (79153): [] __irq_exit_rcu+0x240/0x43c [ 77.349807][ T5114] ---[ end trace 4581dd724c861e49 ]--- [ 77.351162][ T5114] BTRFS: error (device loop0) in __btrfs_unlink_inode:4182: errno=-12 Out of memory [ 77.352708][ T5114] BTRFS info (device loop0): forced readonly [ 77.536065][ T5136] loop0: detected capacity change from 0 to 32768 [ 77.589468][ T5136] BTRFS: device fsid c9fe44da-de57-406a-8241-57ec7d4412cf devid 1 transid 8 /dev/loop0 scanned by syz.0.24 (5136) [ 77.592410][ T5136] BTRFS info (device loop0): using crc32c (crc32c-generic) checksum algorithm [ 77.594687][ T5136] BTRFS info (device loop0): using free space tree [ 77.595790][ T5136] BTRFS info (device loop0): has skinny extents [ 77.603013][ T5136] BTRFS info (device loop0): enabling ssd optimizations [ 77.608461][ T5136] FAULT_INJECTION: forcing a failure. [ 77.608461][ T5136] name failslab, interval 1, probability 0, space 0, times 0 [ 77.610562][ T5136] CPU: 0 PID: 5136 Comm: syz.0.24 Tainted: G W syzkaller #0 [ 77.612002][ T5136] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/18/2026 [ 77.613688][ T5136] Call trace: [ 77.614202][ T5136] dump_backtrace+0x0/0x458 [ 77.614913][ T5136] show_stack+0x2c/0x3c [ 77.615559][ T5136] __dump_stack+0x30/0x40 [ 77.616240][ T5136] dump_stack_lvl+0xf4/0x15c [ 77.616990][ T5136] dump_stack+0x1c/0x5c [ 77.617671][ T5136] should_fail+0x3bc/0x514 [ 77.618403][ T5136] __should_failslab+0xbc/0x10c [ 77.619234][ T5136] should_failslab+0x10/0x28 [ 77.619992][ T5136] slab_pre_alloc_hook+0x64/0xe8 [ 77.620831][ T5136] kmem_cache_alloc_trace+0x98/0x3ec [ 77.621735][ T5136] btrfs_delete_delayed_dir_index+0x22c/0x56c [ 77.622751][ T5136] __btrfs_unlink_inode+0x350/0xaec [ 77.623639][ T5136] btrfs_unlink+0x108/0x258 [ 77.624383][ T5136] vfs_unlink+0x2e0/0x4f4 [ 77.625117][ T5136] do_unlinkat+0x328/0x618 [ 77.625813][ T5136] __arm64_sys_unlinkat+0xe0/0xfc [ 77.626587][ T5136] invoke_syscall+0x98/0x2b0 [ 77.627293][ T5136] el0_svc_common+0x138/0x258 [ 77.628012][ T5136] do_el0_svc+0x58/0x13c [ 77.628685][ T5136] el0_svc+0x78/0x1d0 [ 77.629285][ T5136] el0t_64_sync_handler+0xcc/0xe4 [ 77.630111][ T5136] el0t_64_sync+0x1a0/0x1a4 [ 77.631986][ T5136] ------------[ cut here ]------------ [ 77.632940][ T5136] WARNING: CPU: 0 PID: 5136 at fs/btrfs/inode.c:4182 __btrfs_unlink_inode+0x904/0xaec [ 77.634371][ T5136] Modules linked in: [ 77.634973][ T5136] CPU: 0 PID: 5136 Comm: syz.0.24 Tainted: G W syzkaller #0 [ 77.636426][ T5136] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/18/2026 [ 77.638109][ T5136] pstate: 62400005 (nZCv daif +PAN -UAO +TCO -DIT -SSBS BTYPE=--) [ 77.639401][ T5136] pc : __btrfs_unlink_inode+0x904/0xaec [ 77.640290][ T5136] lr : __btrfs_unlink_inode+0x904/0xaec [ 77.641221][ T5136] sp : ffff800020407a60 [ 77.641889][ T5136] x29: ffff800020407b10 x28: ffff0000ccb8a000 x27: ffff0000e2bc8410 [ 77.643225][ T5136] x26: 0000000000000100 x25: 00000000fffffff4 x24: ffff0000e85819a0 [ 77.644550][ T5136] x23: ffff700004080f54 x22: dfff800000000000 x21: ffff0000ec41ce80 [ 77.645870][ T5136] x20: ffff0000de904b58 x19: 1fffe0001bd2096b x18: 0000000000000001 [ 77.647167][ T5136] x17: 0000000000000000 x16: ffff80001125f448 x15: 00000000ffffffff [ 77.648544][ T5136] x14: 0000000000000001 x13: 1fffe000341f05ab x12: 0000000000ff0100 [ 77.649729][ T5136] x11: 0000000000000000 x10: 0000000000000000 x9 : ad36f4f7c5b88a00 [ 77.651097][ T5136] x8 : ad36f4f7c5b88a00 x7 : 0000000000000001 x6 : 0000000000000001 [ 77.652397][ T5136] x5 : ffff800020407378 x4 : ffff80001437f3e0 x3 : ffff800008509220 [ 77.653718][ T5136] x2 : 0000000000000001 x1 : 0000000100000000 x0 : 0000000000000026 [ 77.655071][ T5136] Call trace: [ 77.655615][ T5136] __btrfs_unlink_inode+0x904/0xaec [ 77.656521][ T5136] btrfs_unlink+0x108/0x258 [ 77.657311][ T5136] vfs_unlink+0x2e0/0x4f4 [ 77.658051][ T5136] do_unlinkat+0x328/0x618 [ 77.658799][ T5136] __arm64_sys_unlinkat+0xe0/0xfc [ 77.659634][ T5136] invoke_syscall+0x98/0x2b0 [ 77.660405][ T5136] el0_svc_common+0x138/0x258 [ 77.661196][ T5136] do_el0_svc+0x58/0x13c [ 77.661908][ T5136] el0_svc+0x78/0x1d0 [ 77.662565][ T5136] el0t_64_sync_handler+0xcc/0xe4 [ 77.663397][ T5136] el0t_64_sync+0x1a0/0x1a4 [ 77.664118][ T5136] irq event stamp: 78800 [ 77.664801][ T5136] hardirqs last enabled at (78799): [] __up_console_sem+0xb4/0xfc [ 77.666424][ T5136] hardirqs last disabled at (78800): [] el1_dbg+0x24/0x80 [ 77.667899][ T5136] softirqs last enabled at (78780): [] handle_softirqs+0xa40/0xbe4 [ 77.669486][ T5136] softirqs last disabled at (78763): [] __irq_exit_rcu+0x240/0x43c [ 77.671057][ T5136] ---[ end trace 4581dd724c861e4a ]--- [ 77.673314][ T5136] BTRFS: error (device loop0) in __btrfs_unlink_inode:4182: errno=-12 Out of memory [ 77.675086][ T5136] BTRFS info (device loop0): forced readonly [ 77.890600][ T5158] BTRFS: device fsid c9fe44da-de57-406a-8241-57ec7d4412cf devid 1 transid 8 /dev/loop0 scanned by syz.0.25 (5158) [ 77.893767][ T5158] BTRFS info (device loop0): using crc32c (crc32c-generic) checksum algorithm [ 77.895543][ T5158] BTRFS info (device loop0): using free space tree [ 77.896562][ T5158] BTRFS info (device loop0): has skinny extents [ 77.903671][ T5158] BTRFS info (device loop0): enabling ssd optimizations [ 77.909230][ T5158] FAULT_INJECTION: forcing a failure. [ 77.909230][ T5158] name failslab, interval 1, probability 0, space 0, times 0 [ 77.911338][ T5158] CPU: 0 PID: 5158 Comm: syz.0.25 Tainted: G W syzkaller #0 [ 77.912651][ T5158] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/18/2026 [ 77.914237][ T5158] Call trace: [ 77.914775][ T5158] dump_backtrace+0x0/0x458 [ 77.915535][ T5158] show_stack+0x2c/0x3c [ 77.916267][ T5158] __dump_stack+0x30/0x40 [ 77.916977][ T5158] dump_stack_lvl+0xf4/0x15c [ 77.917795][ T5158] dump_stack+0x1c/0x5c [ 77.918450][ T5158] should_fail+0x3bc/0x514 [ 77.919142][ T5158] __should_failslab+0xbc/0x10c [ 77.919970][ T5158] should_failslab+0x10/0x28 [ 77.920739][ T5158] slab_pre_alloc_hook+0x64/0xe8 [ 77.921567][ T5158] kmem_cache_alloc_trace+0x98/0x3ec [ 77.922409][ T5158] btrfs_delete_delayed_dir_index+0x22c/0x56c [ 77.923384][ T5158] __btrfs_unlink_inode+0x350/0xaec [ 77.924226][ T5158] btrfs_unlink+0x108/0x258 [ 77.924879][ T5158] vfs_unlink+0x2e0/0x4f4 [ 77.925585][ T5158] do_unlinkat+0x328/0x618 [ 77.926258][ T5158] __arm64_sys_unlinkat+0xe0/0xfc [ 77.927033][ T5158] invoke_syscall+0x98/0x2b0 [ 77.927790][ T5158] el0_svc_common+0x138/0x258 [ 77.928590][ T5158] do_el0_svc+0x58/0x13c [ 77.929261][ T5158] el0_svc+0x78/0x1d0 [ 77.929945][ T5158] el0t_64_sync_handler+0xcc/0xe4 [ 77.930732][ T5158] el0t_64_sync+0x1a0/0x1a4 [ 77.932963][ T5158] ------------[ cut here ]------------ [ 77.934042][ T5158] WARNING: CPU: 0 PID: 5158 at fs/btrfs/inode.c:4182 __btrfs_unlink_inode+0x904/0xaec [ 77.935402][ T5158] Modules linked in: [ 77.936020][ T5158] CPU: 0 PID: 5158 Comm: syz.0.25 Tainted: G W syzkaller #0 [ 77.937322][ T5158] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/18/2026 [ 77.938935][ T5158] pstate: 62400005 (nZCv daif +PAN -UAO +TCO -DIT -SSBS BTYPE=--) [ 77.940094][ T5158] pc : __btrfs_unlink_inode+0x904/0xaec [ 77.940984][ T5158] lr : __btrfs_unlink_inode+0x904/0xaec [ 77.941888][ T5158] sp : ffff800020407a60 [ 77.942573][ T5158] x29: ffff800020407b10 x28: ffff0000d173e000 x27: ffff0000e2b7e010 [ 77.943961][ T5158] x26: 0000000000000100 x25: 00000000fffffff4 x24: ffff0000d9d389a0 [ 77.945343][ T5158] x23: ffff700004080f54 x22: dfff800000000000 x21: ffff0000ec57bae0 [ 77.946633][ T5158] x20: ffff0000de904cb8 x19: 1fffe0001bd20997 x18: 0000000000000001 [ 77.948036][ T5158] x17: 0000000000000000 x16: ffff80001125f448 x15: 00000000ffffffff [ 77.949326][ T5158] x14: 0000000000000001 x13: 1fffe000341f05ab x12: 0000000000ff0100 [ 77.950649][ T5158] x11: 0000000000000000 x10: 0000000000000000 x9 : 9eab030f4a35db00 [ 77.951987][ T5158] x8 : 9eab030f4a35db00 x7 : 0000000000000001 x6 : 0000000000000001 [ 77.953363][ T5158] x5 : ffff800020407378 x4 : ffff80001437f3e0 x3 : ffff800008509220 [ 77.954724][ T5158] x2 : 0000000000000001 x1 : 0000000100000000 x0 : 0000000000000026 [ 77.956121][ T5158] Call trace: [ 77.956658][ T5158] __btrfs_unlink_inode+0x904/0xaec [ 77.957523][ T5158] btrfs_unlink+0x108/0x258 [ 77.958281][ T5158] vfs_unlink+0x2e0/0x4f4 [ 77.958998][ T5158] do_unlinkat+0x328/0x618 [ 77.959712][ T5158] __arm64_sys_unlinkat+0xe0/0xfc [ 77.960492][ T5158] invoke_syscall+0x98/0x2b0 [ 77.961230][ T5158] el0_svc_common+0x138/0x258 [ 77.961978][ T5158] do_el0_svc+0x58/0x13c [ 77.962667][ T5158] el0_svc+0x78/0x1d0 [ 77.963237][ T5158] el0t_64_sync_handler+0xcc/0xe4 [ 77.963996][ T5158] el0t_64_sync+0x1a0/0x1a4 [ 77.964727][ T5158] irq event stamp: 79148 [ 77.965340][ T5158] hardirqs last enabled at (79147): [] __up_console_sem+0xb4/0xfc [ 77.966758][ T5158] hardirqs last disabled at (79148): [] el1_dbg+0x24/0x80 [ 77.968104][ T5158] softirqs last enabled at (79138): [] handle_softirqs+0xa40/0xbe4 [ 77.969696][ T5158] softirqs last disabled at (79121): [] __irq_exit_rcu+0x240/0x43c [ 77.971242][ T5158] ---[ end trace 4581dd724c861e4b ]--- [ 77.974145][ T5158] BTRFS: error (device loop0) in __btrfs_unlink_inode:4182: errno=-12 Out of memory [ 77.975875][ T5158] BTRFS info (device loop0): forced readonly [ 78.207961][ T5180] BTRFS: device fsid c9fe44da-de57-406a-8241-57ec7d4412cf devid 1 transid 8 /dev/loop0 scanned by syz.0.26 (5180) [ 78.216722][ T5180] BTRFS info (device loop0): using crc32c (crc32c-generic) checksum algorithm [ 78.218296][ T5180] BTRFS info (device loop0): using free space tree [ 78.219268][ T5180] BTRFS info (device loop0): has skinny extents [ 78.337175][ T5180] BTRFS info (device loop0): enabling ssd optimizations [ 78.346037][ T5180] FAULT_INJECTION: forcing a failure. [ 78.346037][ T5180] name failslab, interval 1, probability 0, space 0, times 0 [ 78.348191][ T5180] CPU: 0 PID: 5180 Comm: syz.0.26 Tainted: G W syzkaller #0 [ 78.349585][ T5180] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/18/2026 [ 78.351258][ T5180] Call trace: [ 78.351746][ T5180] dump_backtrace+0x0/0x458 [ 78.352524][ T5180] show_stack+0x2c/0x3c [ 78.353153][ T5180] __dump_stack+0x30/0x40 [ 78.353835][ T5180] dump_stack_lvl+0xf4/0x15c [ 78.354588][ T5180] dump_stack+0x1c/0x5c [ 78.355254][ T5180] should_fail+0x3bc/0x514 [ 78.355989][ T5180] __should_failslab+0xbc/0x10c [ 78.356815][ T5180] should_failslab+0x10/0x28 [ 78.357603][ T5180] slab_pre_alloc_hook+0x64/0xe8 [ 78.358385][ T5180] kmem_cache_alloc_trace+0x98/0x3ec [ 78.359249][ T5180] btrfs_delete_delayed_dir_index+0x22c/0x56c [ 78.360263][ T5180] __btrfs_unlink_inode+0x350/0xaec [ 78.361141][ T5180] btrfs_unlink+0x108/0x258 [ 78.361872][ T5180] vfs_unlink+0x2e0/0x4f4 [ 78.362576][ T5180] do_unlinkat+0x328/0x618 [ 78.363295][ T5180] __arm64_sys_unlinkat+0xe0/0xfc [ 78.364117][ T5180] invoke_syscall+0x98/0x2b0 [ 78.364856][ T5180] el0_svc_common+0x138/0x258 [ 78.365585][ T5180] do_el0_svc+0x58/0x13c [ 78.366263][ T5180] el0_svc+0x78/0x1d0 [ 78.366882][ T5180] el0t_64_sync_handler+0xcc/0xe4 [ 78.367679][ T5180] el0t_64_sync+0x1a0/0x1a4 [ 78.385869][ T5180] ------------[ cut here ]------------ [ 78.386916][ T5180] WARNING: CPU: 0 PID: 5180 at fs/btrfs/inode.c:4182 __btrfs_unlink_inode+0x904/0xaec [ 78.388351][ T5180] Modules linked in: [ 78.388952][ T5180] CPU: 0 PID: 5180 Comm: syz.0.26 Tainted: G W syzkaller #0 [ 78.390341][ T5180] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/18/2026 [ 78.391975][ T5180] pstate: 62400005 (nZCv daif +PAN -UAO +TCO -DIT -SSBS BTYPE=--) [ 78.393236][ T5180] pc : __btrfs_unlink_inode+0x904/0xaec [ 78.394159][ T5180] lr : __btrfs_unlink_inode+0x904/0xaec [ 78.395068][ T5180] sp : ffff800020407a60 [ 78.395737][ T5180] x29: ffff800020407b10 x28: ffff0000d992e000 x27: ffff0000e2b7e410 [ 78.397034][ T5180] x26: 0000000000000100 x25: 00000000fffffff4 x24: ffff0000ec3c7b00 [ 78.398325][ T5180] x23: ffff700004080f54 x22: dfff800000000000 x21: ffff0000ec57e220 [ 78.399616][ T5180] x20: ffff0000de904e18 x19: 1fffe0001bd209c3 x18: 0000000000000001 [ 78.400906][ T5180] x17: 0000000000000000 x16: ffff80001125f448 x15: 00000000ffffffff [ 78.402206][ T5180] x14: 0000000000000001 x13: 1fffe000341f05ab x12: 0000000000ff0100 [ 78.403511][ T5180] x11: 0000000000000000 x10: 0000000000000000 x9 : 775f8ae7e1b21700 [ 78.404836][ T5180] x8 : 775f8ae7e1b21700 x7 : 0000000000000001 x6 : 0000000000000001 [ 78.406187][ T5180] x5 : ffff800020407378 x4 : ffff80001437f3e0 x3 : ffff800008509220 [ 78.407574][ T5180] x2 : 0000000000000001 x1 : 0000000100000000 x0 : 0000000000000026 [ 78.408889][ T5180] Call trace: [ 78.409420][ T5180] __btrfs_unlink_inode+0x904/0xaec [ 78.410176][ T5180] btrfs_unlink+0x108/0x258 [ 78.410943][ T5180] vfs_unlink+0x2e0/0x4f4 [ 78.411653][ T5180] do_unlinkat+0x328/0x618 [ 78.412365][ T5180] __arm64_sys_unlinkat+0xe0/0xfc [ 78.413159][ T5180] invoke_syscall+0x98/0x2b0 [ 78.413881][ T5180] el0_svc_common+0x138/0x258 [ 78.414637][ T5180] do_el0_svc+0x58/0x13c [ 78.415275][ T5180] el0_svc+0x78/0x1d0 [ 78.415924][ T5180] el0t_64_sync_handler+0xcc/0xe4 [ 78.416745][ T5180] el0t_64_sync+0x1a0/0x1a4 [ 78.417453][ T5180] irq event stamp: 79278 [ 78.418101][ T5180] hardirqs last enabled at (79277): [] __up_console_sem+0xb4/0xfc [ 78.419682][ T5180] hardirqs last disabled at (79278): [] el1_dbg+0x24/0x80 [ 78.421090][ T5180] softirqs last enabled at (79258): [] handle_softirqs+0xa40/0xbe4 [ 78.422596][ T5180] softirqs last disabled at (79195): [] __irq_exit_rcu+0x240/0x43c [ 78.424108][ T5180] ---[ end trace 4581dd724c861e4c ]--- [ 78.427392][ T5180] BTRFS: error (device loop0) in __btrfs_unlink_inode:4182: errno=-12 Out of memory [ 78.428766][ T5180] BTRFS info (device loop0): forced readonly [ 78.645039][ T5203] BTRFS: device fsid c9fe44da-de57-406a-8241-57ec7d4412cf devid 1 transid 8 /dev/loop0 scanned by syz.0.27 (5203) [ 78.688199][ T5203] BTRFS info (device loop0): using crc32c (crc32c-generic) checksum algorithm [ 78.689664][ T5203] BTRFS info (device loop0): using free space tree [ 78.690733][ T5203] BTRFS info (device loop0): has skinny extents [ 78.698212][ T5203] BTRFS info (device loop0): enabling ssd optimizations [ 78.702199][ T5203] FAULT_INJECTION: forcing a failure. [ 78.702199][ T5203] name failslab, interval 1, probability 0, space 0, times 0 [ 78.704759][ T5203] CPU: 0 PID: 5203 Comm: syz.0.27 Tainted: G W syzkaller #0 [ 78.706102][ T5203] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/18/2026 [ 78.707683][ T5203] Call trace: [ 78.708248][ T5203] dump_backtrace+0x0/0x458 [ 78.709010][ T5203] show_stack+0x2c/0x3c [ 78.709647][ T5203] __dump_stack+0x30/0x40 [ 78.710380][ T5203] dump_stack_lvl+0xf4/0x15c [ 78.711113][ T5203] dump_stack+0x1c/0x5c [ 78.711749][ T5203] should_fail+0x3bc/0x514 [ 78.712440][ T5203] __should_failslab+0xbc/0x10c [ 78.713216][ T5203] should_failslab+0x10/0x28 [ 78.713961][ T5203] slab_pre_alloc_hook+0x64/0xe8 [ 78.714794][ T5203] kmem_cache_alloc+0x94/0x3d4 [ 78.715631][ T5203] start_transaction+0x4d0/0x13ec [ 78.716419][ T5203] btrfs_start_transaction_fallback_global_rsv+0x34/0x44 [ 78.717581][ T5203] btrfs_unlink+0x74/0x258 [ 78.718286][ T5203] vfs_unlink+0x2e0/0x4f4 [ 78.718944][ T5203] do_unlinkat+0x328/0x618 [ 78.719655][ T5203] __arm64_sys_unlinkat+0xe0/0xfc [ 78.720487][ T5203] invoke_syscall+0x98/0x2b0 [ 78.721213][ T5203] el0_svc_common+0x138/0x258 [ 78.722024][ T5203] do_el0_svc+0x58/0x13c [ 78.722733][ T5203] el0_svc+0x78/0x1d0 [ 78.723389][ T5203] el0t_64_sync_handler+0xcc/0xe4 [ 78.724217][ T5203] el0t_64_sync+0x1a0/0x1a4 [ 78.777692][ T4923] BTRFS: device fsid c9fe44da-de57-406a-8241-57ec7d4412cf devid 1 transid 10 /dev/loop0 scanned by udevd (4923) [ 78.917186][ T5224] BTRFS info (device loop0): using crc32c (crc32c-generic) checksum algorithm [ 78.918749][ T5224] BTRFS info (device loop0): using free space tree [ 78.919797][ T5224] BTRFS info (device loop0): has skinny extents [ 78.929729][ T5224] BTRFS info (device loop0): enabling ssd optimizations [ 78.942235][ T5224] FAULT_INJECTION: forcing a failure. [ 78.942235][ T5224] name failslab, interval 1, probability 0, space 0, times 0 [ 78.944464][ T5224] CPU: 1 PID: 5224 Comm: syz.0.28 Tainted: G W syzkaller #0 [ 78.945798][ T5224] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/18/2026 [ 78.947488][ T5224] Call trace: [ 78.947984][ T5224] dump_backtrace+0x0/0x458 [ 78.948780][ T5224] show_stack+0x2c/0x3c [ 78.949447][ T5224] __dump_stack+0x30/0x40 [ 78.950135][ T5224] dump_stack_lvl+0xf4/0x15c [ 78.950875][ T5224] dump_stack+0x1c/0x5c [ 78.951560][ T5224] should_fail+0x3bc/0x514 [ 78.952272][ T5224] __should_failslab+0xbc/0x10c [ 78.953061][ T5224] should_failslab+0x10/0x28 [ 78.953773][ T5224] slab_pre_alloc_hook+0x64/0xe8 [ 78.954628][ T5224] kmem_cache_alloc_trace+0x98/0x3ec [ 78.955465][ T5224] btrfs_delete_delayed_dir_index+0x22c/0x56c [ 78.956496][ T5224] __btrfs_unlink_inode+0x350/0xaec [ 78.957386][ T5224] btrfs_unlink+0x108/0x258 [ 78.958125][ T5224] vfs_unlink+0x2e0/0x4f4 [ 78.958851][ T5224] do_unlinkat+0x328/0x618 [ 78.959595][ T5224] __arm64_sys_unlinkat+0xe0/0xfc [ 78.960464][ T5224] invoke_syscall+0x98/0x2b0 [ 78.961228][ T5224] el0_svc_common+0x138/0x258 [ 78.962016][ T5224] do_el0_svc+0x58/0x13c [ 78.962707][ T5224] el0_svc+0x78/0x1d0 [ 78.963349][ T5224] el0t_64_sync_handler+0xcc/0xe4 [ 78.964150][ T5224] el0t_64_sync+0x1a0/0x1a4 [ 78.965603][ T5224] ------------[ cut here ]------------ [ 78.966620][ T5224] WARNING: CPU: 1 PID: 5224 at fs/btrfs/inode.c:4182 __btrfs_unlink_inode+0x904/0xaec [ 78.968045][ T5224] Modules linked in: [ 78.968664][ T5224] CPU: 1 PID: 5224 Comm: syz.0.28 Tainted: G W syzkaller #0 [ 78.970054][ T5224] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/18/2026 [ 78.971691][ T5224] pstate: 62400005 (nZCv daif +PAN -UAO +TCO -DIT -SSBS BTYPE=--) [ 78.972884][ T5224] pc : __btrfs_unlink_inode+0x904/0xaec [ 78.973779][ T5224] lr : __btrfs_unlink_inode+0x904/0xaec [ 78.974669][ T5224] sp : ffff800020407a60 [ 78.975343][ T5224] x29: ffff800020407b10 x28: ffff0000c0f02000 x27: ffff0000e2bc8810 [ 78.976623][ T5224] x26: 0000000000000100 x25: 00000000fffffff4 x24: ffff0000dab9cdc0 [ 78.977897][ T5224] x23: ffff700004080f54 x22: dfff800000000000 x21: ffff0000ec41e220 [ 78.979158][ T5224] x20: ffff0000deba7738 x19: 1fffe0001bd74ee7 x18: 0000000000000001 [ 78.980518][ T5224] x17: 0000000000000000 x16: ffff80001125f448 x15: 00000000ffffffff [ 78.981864][ T5224] x14: 0000000000000001 x13: 1fffe000341f47ab x12: 0000000000ff0100 [ 78.983217][ T5224] x11: 0000000000000000 x10: 0000000000000000 x9 : 9da6b4a2f6979c00 [ 78.984545][ T5224] x8 : 9da6b4a2f6979c00 x7 : 0000000000000001 x6 : 0000000000000001 [ 78.985900][ T5224] x5 : ffff800020407378 x4 : ffff80001437f3e0 x3 : ffff800008509220 [ 78.987287][ T5224] x2 : 0000000000000001 x1 : 0000000100000000 x0 : 0000000000000026 [ 78.988639][ T5224] Call trace: [ 78.989206][ T5224] __btrfs_unlink_inode+0x904/0xaec [ 78.990024][ T5224] btrfs_unlink+0x108/0x258 [ 78.990784][ T5224] vfs_unlink+0x2e0/0x4f4 [ 78.991450][ T5224] do_unlinkat+0x328/0x618 [ 78.992134][ T5224] __arm64_sys_unlinkat+0xe0/0xfc [ 78.992896][ T5224] invoke_syscall+0x98/0x2b0 [ 78.993651][ T5224] el0_svc_common+0x138/0x258 [ 78.994343][ T5224] do_el0_svc+0x58/0x13c [ 78.994951][ T5224] el0_svc+0x78/0x1d0 [ 78.995577][ T5224] el0t_64_sync_handler+0xcc/0xe4 [ 78.996310][ T5224] el0t_64_sync+0x1a0/0x1a4 [ 78.996955][ T5224] irq event stamp: 78908 [ 78.997662][ T5224] hardirqs last enabled at (78907): [] __up_console_sem+0xb4/0xfc [ 78.999265][ T5224] hardirqs last disabled at (78908): [] el1_dbg+0x24/0x80 [ 79.000662][ T5224] softirqs last enabled at (78888): [] handle_softirqs+0xa40/0xbe4 [ 79.002272][ T5224] softirqs last disabled at (78843): [] __irq_exit_rcu+0x240/0x43c [ 79.003799][ T5224] ---[ end trace 4581dd724c861e4d ]--- [ 79.006175][ T5224] BTRFS: error (device loop0) in __btrfs_unlink_inode:4182: errno=-12 Out of memory [ 79.007736][ T5224] BTRFS info (device loop0): forced readonly [ 79.168270][ T5247] BTRFS: device fsid c9fe44da-de57-406a-8241-57ec7d4412cf devid 1 transid 8 /dev/loop0 scanned by syz.0.29 (5247) [ 79.173031][ T5247] BTRFS info (device loop0): using crc32c (crc32c-generic) checksum algorithm [ 79.174615][ T5247] BTRFS info (device loop0): using free space tree [ 79.175820][ T5247] BTRFS info (device loop0): has skinny extents [ 79.182804][ T5247] BTRFS info (device loop0): enabling ssd optimizations [ 79.186997][ T5247] FAULT_INJECTION: forcing a failure. [ 79.186997][ T5247] name failslab, interval 1, probability 0, space 0, times 0 [ 79.189022][ T5247] CPU: 1 PID: 5247 Comm: syz.0.29 Tainted: G W syzkaller #0 [ 79.190399][ T5247] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/18/2026 [ 79.192045][ T5247] Call trace: [ 79.192587][ T5247] dump_backtrace+0x0/0x458 [ 79.193346][ T5247] show_stack+0x2c/0x3c [ 79.194043][ T5247] __dump_stack+0x30/0x40 [ 79.194783][ T5247] dump_stack_lvl+0xf4/0x15c [ 79.195551][ T5247] dump_stack+0x1c/0x5c [ 79.196267][ T5247] should_fail+0x3bc/0x514 [ 79.197001][ T5247] __should_failslab+0xbc/0x10c [ 79.197816][ T5247] should_failslab+0x10/0x28 [ 79.198594][ T5247] slab_pre_alloc_hook+0x64/0xe8 [ 79.199429][ T5247] kmem_cache_alloc+0x94/0x3d4 [ 79.200236][ T5247] start_transaction+0x4d0/0x13ec [ 79.201041][ T5247] btrfs_start_transaction_fallback_global_rsv+0x34/0x44 [ 79.202151][ T5247] btrfs_unlink+0x74/0x258 [ 79.202858][ T5247] vfs_unlink+0x2e0/0x4f4 [ 79.203544][ T5247] do_unlinkat+0x328/0x618 [ 79.204310][ T5247] __arm64_sys_unlinkat+0xe0/0xfc [ 79.205127][ T5247] invoke_syscall+0x98/0x2b0 [ 79.205897][ T5247] el0_svc_common+0x138/0x258 [ 79.206672][ T5247] do_el0_svc+0x58/0x13c [ 79.207411][ T5247] el0_svc+0x78/0x1d0 [ 79.208084][ T5247] el0t_64_sync_handler+0xcc/0xe4 [ 79.208949][ T5247] el0t_64_sync+0x1a0/0x1a4 [ 79.247347][ T4923] BTRFS: device fsid c9fe44da-de57-406a-8241-57ec7d4412cf devid 1 transid 10 /dev/loop0 scanned by udevd (4923) [ 79.455408][ T5269] BTRFS info (device loop0): using crc32c (crc32c-generic) checksum algorithm [ 79.457012][ T5269] BTRFS info (device loop0): using free space tree [ 79.458117][ T5269] BTRFS info (device loop0): has skinny extents [ 79.468147][ T5269] BTRFS info (device loop0): enabling ssd optimizations [ 79.471801][ T5269] FAULT_INJECTION: forcing a failure. [ 79.471801][ T5269] name failslab, interval 1, probability 0, space 0, times 0 [ 79.474114][ T5269] CPU: 0 PID: 5269 Comm: syz.0.30 Tainted: G W syzkaller #0 [ 79.475470][ T5269] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/18/2026 [ 79.477079][ T5269] Call trace: [ 79.477614][ T5269] dump_backtrace+0x0/0x458 [ 79.478346][ T5269] show_stack+0x2c/0x3c [ 79.478983][ T5269] __dump_stack+0x30/0x40 [ 79.479672][ T5269] dump_stack_lvl+0xf4/0x15c [ 79.480358][ T5269] dump_stack+0x1c/0x5c [ 79.480982][ T5269] should_fail+0x3bc/0x514 [ 79.481634][ T5269] __should_failslab+0xbc/0x10c [ 79.482388][ T5269] should_failslab+0x10/0x28 [ 79.483052][ T5269] slab_pre_alloc_hook+0x64/0xe8 [ 79.483829][ T5269] kmem_cache_alloc_trace+0x98/0x3ec [ 79.484677][ T5269] btrfs_delete_delayed_dir_index+0x22c/0x56c [ 79.485689][ T5269] __btrfs_unlink_inode+0x350/0xaec [ 79.486571][ T5269] btrfs_unlink+0x108/0x258 [ 79.487323][ T5269] vfs_unlink+0x2e0/0x4f4 [ 79.488042][ T5269] do_unlinkat+0x328/0x618 [ 79.488743][ T5269] __arm64_sys_unlinkat+0xe0/0xfc [ 79.489575][ T5269] invoke_syscall+0x98/0x2b0 [ 79.490312][ T5269] el0_svc_common+0x138/0x258 [ 79.491072][ T5269] do_el0_svc+0x58/0x13c [ 79.491814][ T5269] el0_svc+0x78/0x1d0 [ 79.492445][ T5269] el0t_64_sync_handler+0xcc/0xe4 [ 79.493315][ T5269] el0t_64_sync+0x1a0/0x1a4 [ 79.494966][ T5269] ------------[ cut here ]------------ [ 79.495899][ T5269] WARNING: CPU: 0 PID: 5269 at fs/btrfs/inode.c:4182 __btrfs_unlink_inode+0x904/0xaec [ 79.497453][ T5269] Modules linked in: [ 79.498112][ T5269] CPU: 0 PID: 5269 Comm: syz.0.30 Tainted: G W syzkaller #0 [ 79.499514][ T5269] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/18/2026 [ 79.501188][ T5269] pstate: 62400005 (nZCv daif +PAN -UAO +TCO -DIT -SSBS BTYPE=--) [ 79.502471][ T5269] pc : __btrfs_unlink_inode+0x904/0xaec [ 79.503358][ T5269] lr : __btrfs_unlink_inode+0x904/0xaec [ 79.504275][ T5269] sp : ffff800020407a60 [ 79.504928][ T5269] x29: ffff800020407b10 x28: ffff0000c7e8e000 x27: ffff0000e2b7c810 [ 79.506296][ T5269] x26: 0000000000000100 x25: 00000000fffffff4 x24: ffff0000dc57b0b0 [ 79.507658][ T5269] x23: ffff700004080f54 x22: dfff800000000000 x21: ffff0000e2a01d70 [ 79.509022][ T5269] x20: ffff0000de904318 x19: 1fffe0001bd20863 x18: 0000000000000001 [ 79.510365][ T5269] x17: 0000000000000000 x16: ffff80001125f448 x15: 00000000ffffffff [ 79.511723][ T5269] x14: 0000000000000001 x13: 1fffe000341f05ab x12: 0000000000ff0100 [ 79.513048][ T5269] x11: 0000000000000000 x10: 0000000000000000 x9 : 3a3fe0482ab66d00 [ 79.514396][ T5269] x8 : 3a3fe0482ab66d00 x7 : 0000000000000001 x6 : 0000000000000001 [ 79.515739][ T5269] x5 : ffff800020407378 x4 : ffff80001437f3e0 x3 : ffff800008509220 [ 79.516983][ T5269] x2 : 0000000000000001 x1 : 0000000100000000 x0 : 0000000000000026 [ 79.518308][ T5269] Call trace: [ 79.518808][ T5269] __btrfs_unlink_inode+0x904/0xaec [ 79.519632][ T5269] btrfs_unlink+0x108/0x258 [ 79.520299][ T5269] vfs_unlink+0x2e0/0x4f4 [ 79.521000][ T5269] do_unlinkat+0x328/0x618 [ 79.521672][ T5269] __arm64_sys_unlinkat+0xe0/0xfc [ 79.522440][ T5269] invoke_syscall+0x98/0x2b0 [ 79.523115][ T5269] el0_svc_common+0x138/0x258 [ 79.523863][ T5269] do_el0_svc+0x58/0x13c [ 79.524525][ T5269] el0_svc+0x78/0x1d0 [ 79.525141][ T5269] el0t_64_sync_handler+0xcc/0xe4 [ 79.525931][ T5269] el0t_64_sync+0x1a0/0x1a4 [ 79.526633][ T5269] irq event stamp: 78858 [ 79.527279][ T5269] hardirqs last enabled at (78857): [] __up_console_sem+0xb4/0xfc [ 79.528778][ T5269] hardirqs last disabled at (78858): [] el1_dbg+0x24/0x80 [ 79.530118][ T5269] softirqs last enabled at (78838): [] handle_softirqs+0xa40/0xbe4 [ 79.531667][ T5269] softirqs last disabled at (78745): [] __irq_exit_rcu+0x240/0x43c [ 79.533307][ T5269] ---[ end trace 4581dd724c861e4e ]--- [ 79.535717][ T5269] BTRFS: error (device loop0) in __btrfs_unlink_inode:4182: errno=-12 Out of memory [ 79.537106][ T5269] BTRFS info (device loop0): forced readonly [ 79.681334][ T5291] BTRFS: device fsid c9fe44da-de57-406a-8241-57ec7d4412cf devid 1 transid 8 /dev/loop0 scanned by syz.0.31 (5291) [ 79.685850][ T5291] BTRFS info (device loop0): using crc32c (crc32c-generic) checksum algorithm [ 79.687355][ T5291] BTRFS info (device loop0): using free space tree [ 79.688423][ T5291] BTRFS info (device loop0): has skinny extents [ 79.702410][ T5291] BTRFS info (device loop0): enabling ssd optimizations [ 79.707005][ T5291] FAULT_INJECTION: forcing a failure. [ 79.707005][ T5291] name failslab, interval 1, probability 0, space 0, times 0 [ 79.709019][ T5291] CPU: 0 PID: 5291 Comm: syz.0.31 Tainted: G W syzkaller #0 [ 79.710403][ T5291] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/18/2026 [ 79.712098][ T5291] Call trace: [ 79.712659][ T5291] dump_backtrace+0x0/0x458 [ 79.713430][ T5291] show_stack+0x2c/0x3c [ 79.714147][ T5291] __dump_stack+0x30/0x40 [ 79.714870][ T5291] dump_stack_lvl+0xf4/0x15c [ 79.715617][ T5291] dump_stack+0x1c/0x5c [ 79.716324][ T5291] should_fail+0x3bc/0x514 [ 79.717008][ T5291] __should_failslab+0xbc/0x10c [ 79.717756][ T5291] should_failslab+0x10/0x28 [ 79.718502][ T5291] slab_pre_alloc_hook+0x64/0xe8 [ 79.719323][ T5291] kmem_cache_alloc_trace+0x98/0x3ec [ 79.720191][ T5291] btrfs_delete_delayed_dir_index+0x22c/0x56c [ 79.721244][ T5291] __btrfs_unlink_inode+0x350/0xaec [ 79.722102][ T5291] btrfs_unlink+0x108/0x258 [ 79.722837][ T5291] vfs_unlink+0x2e0/0x4f4 [ 79.723533][ T5291] do_unlinkat+0x328/0x618 [ 79.724219][ T5291] __arm64_sys_unlinkat+0xe0/0xfc [ 79.725048][ T5291] invoke_syscall+0x98/0x2b0 [ 79.725782][ T5291] el0_svc_common+0x138/0x258 [ 79.726546][ T5291] do_el0_svc+0x58/0x13c [ 79.727259][ T5291] el0_svc+0x78/0x1d0 [ 79.727941][ T5291] el0t_64_sync_handler+0xcc/0xe4 [ 79.728797][ T5291] el0t_64_sync+0x1a0/0x1a4 [ 79.731014][ T5291] ------------[ cut here ]------------ [ 79.732013][ T5291] WARNING: CPU: 0 PID: 5291 at fs/btrfs/inode.c:4182 __btrfs_unlink_inode+0x904/0xaec [ 79.733523][ T5291] Modules linked in: [ 79.734177][ T5291] CPU: 0 PID: 5291 Comm: syz.0.31 Tainted: G W syzkaller #0 [ 79.735584][ T5291] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/18/2026 [ 79.737172][ T5291] pstate: 62400005 (nZCv daif +PAN -UAO +TCO -DIT -SSBS BTYPE=--) [ 79.738426][ T5291] pc : __btrfs_unlink_inode+0x904/0xaec [ 79.739384][ T5291] lr : __btrfs_unlink_inode+0x904/0xaec [ 79.740313][ T5291] sp : ffff800020ea7a60 [ 79.740991][ T5291] x29: ffff800020ea7b10 x28: ffff0000cab24000 x27: ffff0000e2b7d010 [ 79.742326][ T5291] x26: 0000000000000100 x25: 00000000fffffff4 x24: ffff0000cf892b00 [ 79.743612][ T5291] x23: ffff7000041d4f54 x22: dfff800000000000 x21: ffff0000e2a03ae0 [ 79.744944][ T5291] x20: ffff0000de9045d8 x19: 1fffe0001bd208bb x18: 0000000000000001 [ 79.746317][ T5291] x17: 0000000000000000 x16: ffff80001125f448 x15: 00000000ffffffff [ 79.747681][ T5291] x14: 0000000000000001 x13: 1fffe000341f05ab x12: 0000000000ff0100 [ 79.749005][ T5291] x11: 0000000000000000 x10: 0000000000000000 x9 : bdffef2a8cf94600 [ 79.750360][ T5291] x8 : bdffef2a8cf94600 x7 : 0000000000000001 x6 : 0000000000000001 [ 79.751725][ T5291] x5 : ffff800020ea7378 x4 : ffff80001437f3e0 x3 : ffff800008509220 [ 79.753011][ T5291] x2 : 0000000000000001 x1 : 0000000100000000 x0 : 0000000000000026 [ 79.754369][ T5291] Call trace: [ 79.754901][ T5291] __btrfs_unlink_inode+0x904/0xaec [ 79.755732][ T5291] btrfs_unlink+0x108/0x258 [ 79.756450][ T5291] vfs_unlink+0x2e0/0x4f4 [ 79.757158][ T5291] do_unlinkat+0x328/0x618 [ 79.757886][ T5291] __arm64_sys_unlinkat+0xe0/0xfc [ 79.758739][ T5291] invoke_syscall+0x98/0x2b0 [ 79.759515][ T5291] el0_svc_common+0x138/0x258 [ 79.760286][ T5291] do_el0_svc+0x58/0x13c [ 79.760987][ T5291] el0_svc+0x78/0x1d0 [ 79.761655][ T5291] el0t_64_sync_handler+0xcc/0xe4 [ 79.762519][ T5291] el0t_64_sync+0x1a0/0x1a4 [ 79.763262][ T5291] irq event stamp: 78770 [ 79.763937][ T5291] hardirqs last enabled at (78769): [] __up_console_sem+0xb4/0xfc [ 79.765493][ T5291] hardirqs last disabled at (78770): [] el1_dbg+0x24/0x80 [ 79.766954][ T5291] softirqs last enabled at (78750): [] handle_softirqs+0xa40/0xbe4 [ 79.768523][ T5291] softirqs last disabled at (78701): [] __irq_exit_rcu+0x240/0x43c [ 79.770013][ T5291] ---[ end trace 4581dd724c861e4f ]--- [ 79.772442][ T5291] BTRFS: error (device loop0) in __btrfs_unlink_inode:4182: errno=-12 Out of memory [ 79.774201][ T5291] BTRFS info (device loop0): forced readonly 1970/01/01 00:01:19 executed programs: 19 [ 79.955173][ T5313] set_capacity_and_notify: 7 callbacks suppressed [ 79.955184][ T5313] loop0: detected capacity change from 0 to 32768 [ 80.015056][ T5313] BTRFS: device fsid c9fe44da-de57-406a-8241-57ec7d4412cf devid 1 transid 8 /dev/loop0 scanned by syz.0.32 (5313) [ 80.018207][ T5313] BTRFS info (device loop0): using crc32c (crc32c-generic) checksum algorithm [ 80.019615][ T5313] BTRFS info (device loop0): using free space tree [ 80.020691][ T5313] BTRFS info (device loop0): has skinny extents [ 80.029027][ T5313] BTRFS info (device loop0): enabling ssd optimizations [ 80.033050][ T5313] FAULT_INJECTION: forcing a failure. [ 80.033050][ T5313] name failslab, interval 1, probability 0, space 0, times 0 [ 80.035602][ T5313] CPU: 1 PID: 5313 Comm: syz.0.32 Tainted: G W syzkaller #0 [ 80.036892][ T5313] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/18/2026 [ 80.038491][ T5313] Call trace: [ 80.039048][ T5313] dump_backtrace+0x0/0x458 [ 80.039800][ T5313] show_stack+0x2c/0x3c [ 80.040451][ T5313] __dump_stack+0x30/0x40 [ 80.041143][ T5313] dump_stack_lvl+0xf4/0x15c [ 80.041848][ T5313] dump_stack+0x1c/0x5c [ 80.042485][ T5313] should_fail+0x3bc/0x514 [ 80.043169][ T5313] __should_failslab+0xbc/0x10c [ 80.043966][ T5313] should_failslab+0x10/0x28 [ 80.044714][ T5313] slab_pre_alloc_hook+0x64/0xe8 [ 80.045534][ T5313] kmem_cache_alloc+0x94/0x3d4 [ 80.046274][ T5313] btrfs_alloc_path+0x5c/0x68 [ 80.047051][ T5313] __btrfs_unlink_inode+0x1dc/0xaec [ 80.047933][ T5313] btrfs_unlink+0x108/0x258 [ 80.048715][ T5313] vfs_unlink+0x2e0/0x4f4 [ 80.049429][ T5313] do_unlinkat+0x328/0x618 [ 80.050195][ T5313] __arm64_sys_unlinkat+0xe0/0xfc [ 80.050961][ T5313] invoke_syscall+0x98/0x2b0 [ 80.051663][ T5313] el0_svc_common+0x138/0x258 [ 80.052435][ T5313] do_el0_svc+0x58/0x13c [ 80.053121][ T5313] el0_svc+0x78/0x1d0 [ 80.053791][ T5313] el0t_64_sync_handler+0xcc/0xe4 [ 80.054596][ T5313] el0t_64_sync+0x1a0/0x1a4 [ 80.111809][ T4923] BTRFS: device fsid c9fe44da-de57-406a-8241-57ec7d4412cf devid 1 transid 10 /dev/loop0 scanned by udevd (4923) [ 80.197067][ T5334] loop0: detected capacity change from 0 to 32768 [ 80.325435][ T5334] BTRFS info (device loop0): using crc32c (crc32c-generic) checksum algorithm [ 80.326949][ T5334] BTRFS info (device loop0): using free space tree [ 80.328052][ T5334] BTRFS info (device loop0): has skinny extents [ 80.339269][ T5334] BTRFS info (device loop0): enabling ssd optimizations [ 80.343750][ T5334] FAULT_INJECTION: forcing a failure. [ 80.343750][ T5334] name failslab, interval 1, probability 0, space 0, times 0 [ 80.346504][ T5334] CPU: 1 PID: 5334 Comm: syz.0.33 Tainted: G W syzkaller #0 [ 80.347817][ T5334] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/18/2026 [ 80.349405][ T5334] Call trace: [ 80.349950][ T5334] dump_backtrace+0x0/0x458 [ 80.350642][ T5334] show_stack+0x2c/0x3c [ 80.351244][ T5334] __dump_stack+0x30/0x40 [ 80.351963][ T5334] dump_stack_lvl+0xf4/0x15c [ 80.352710][ T5334] dump_stack+0x1c/0x5c [ 80.353354][ T5334] should_fail+0x3bc/0x514 [ 80.354065][ T5334] __should_failslab+0xbc/0x10c [ 80.354877][ T5334] should_failslab+0x10/0x28 [ 80.355663][ T5334] slab_pre_alloc_hook+0x64/0xe8 [ 80.356489][ T5334] kmem_cache_alloc+0x94/0x3d4 [ 80.357242][ T5334] btrfs_alloc_path+0x5c/0x68 [ 80.357970][ T5334] __btrfs_unlink_inode+0x1dc/0xaec [ 80.358855][ T5334] btrfs_unlink+0x108/0x258 [ 80.359617][ T5334] vfs_unlink+0x2e0/0x4f4 [ 80.360324][ T5334] do_unlinkat+0x328/0x618 [ 80.361095][ T5334] __arm64_sys_unlinkat+0xe0/0xfc [ 80.361925][ T5334] invoke_syscall+0x98/0x2b0 [ 80.362712][ T5334] el0_svc_common+0x138/0x258 [ 80.363472][ T5334] do_el0_svc+0x58/0x13c [ 80.364141][ T5334] el0_svc+0x78/0x1d0 [ 80.364789][ T5334] el0t_64_sync_handler+0xcc/0xe4 [ 80.365599][ T5334] el0t_64_sync+0x1a0/0x1a4 [ 80.502693][ T5356] loop0: detected capacity change from 0 to 32768 [ 80.555147][ T5356] BTRFS: device fsid c9fe44da-de57-406a-8241-57ec7d4412cf devid 1 transid 8 /dev/loop0 scanned by syz.0.34 (5356) [ 80.558207][ T5356] BTRFS info (device loop0): using crc32c (crc32c-generic) checksum algorithm [ 80.559542][ T5356] BTRFS info (device loop0): using free space tree [ 80.560519][ T5356] BTRFS info (device loop0): has skinny extents [ 80.581890][ T5356] BTRFS info (device loop0): enabling ssd optimizations [ 80.586237][ T5356] FAULT_INJECTION: forcing a failure. [ 80.586237][ T5356] name failslab, interval 1, probability 0, space 0, times 0 [ 80.588487][ T5356] CPU: 1 PID: 5356 Comm: syz.0.34 Tainted: G W syzkaller #0 [ 80.589829][ T5356] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/18/2026 [ 80.591460][ T5356] Call trace: [ 80.591987][ T5356] dump_backtrace+0x0/0x458 [ 80.592670][ T5356] show_stack+0x2c/0x3c [ 80.593348][ T5356] __dump_stack+0x30/0x40 [ 80.594055][ T5356] dump_stack_lvl+0xf4/0x15c [ 80.594776][ T5356] dump_stack+0x1c/0x5c [ 80.595444][ T5356] should_fail+0x3bc/0x514 [ 80.596126][ T5356] __should_failslab+0xbc/0x10c [ 80.596880][ T5356] should_failslab+0x10/0x28 [ 80.597673][ T5356] slab_pre_alloc_hook+0x64/0xe8 [ 80.598475][ T5356] kmem_cache_alloc_trace+0x98/0x3ec [ 80.599364][ T5356] btrfs_delete_delayed_dir_index+0x22c/0x56c [ 80.600362][ T5356] __btrfs_unlink_inode+0x350/0xaec [ 80.601196][ T5356] btrfs_unlink+0x108/0x258 [ 80.601979][ T5356] vfs_unlink+0x2e0/0x4f4 [ 80.602654][ T5356] do_unlinkat+0x328/0x618 [ 80.603308][ T5356] __arm64_sys_unlinkat+0xe0/0xfc [ 80.604195][ T5356] invoke_syscall+0x98/0x2b0 [ 80.604968][ T5356] el0_svc_common+0x138/0x258 [ 80.605706][ T5356] do_el0_svc+0x58/0x13c [ 80.606373][ T5356] el0_svc+0x78/0x1d0 [ 80.607035][ T5356] el0t_64_sync_handler+0xcc/0xe4 [ 80.607869][ T5356] el0t_64_sync+0x1a0/0x1a4 [ 80.610350][ T5356] ------------[ cut here ]------------ [ 80.611306][ T5356] WARNING: CPU: 1 PID: 5356 at fs/btrfs/inode.c:4182 __btrfs_unlink_inode+0x904/0xaec [ 80.612808][ T5356] Modules linked in: [ 80.613403][ T5356] CPU: 1 PID: 5356 Comm: syz.0.34 Tainted: G W syzkaller #0 [ 80.614847][ T5356] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/18/2026 [ 80.616519][ T5356] pstate: 62400005 (nZCv daif +PAN -UAO +TCO -DIT -SSBS BTYPE=--) [ 80.617747][ T5356] pc : __btrfs_unlink_inode+0x904/0xaec [ 80.618618][ T5356] lr : __btrfs_unlink_inode+0x904/0xaec [ 80.619525][ T5356] sp : ffff800020ef7a60 [ 80.620230][ T5356] x29: ffff800020ef7b10 x28: ffff0000ced5e000 x27: ffff0000e2bc9410 [ 80.621544][ T5356] x26: 0000000000000100 x25: 00000000fffffff4 x24: ffff0000d19604d0 [ 80.622902][ T5356] x23: ffff7000041def54 x22: dfff800000000000 x21: ffff0000e2ba5850 [ 80.624243][ T5356] x20: ffff0000deba7e18 x19: 1fffe0001bd74fc3 x18: 0000000000000001 [ 80.625480][ T5356] x17: 0000000000000000 x16: ffff80001125f448 x15: 00000000ffffffff [ 80.626745][ T5356] x14: 0000000000000001 x13: 1fffe000341f47ab x12: 0000000000ff0100 [ 80.628146][ T5356] x11: 0000000000000000 x10: 0000000000000000 x9 : 81e26fb1442fc500 [ 80.629503][ T5356] x8 : 81e26fb1442fc500 x7 : 0000000000000001 x6 : 0000000000000001 [ 80.630848][ T5356] x5 : ffff800020ef7378 x4 : ffff80001437f3e0 x3 : ffff800008509220 [ 80.632229][ T5356] x2 : 0000000000000001 x1 : 0000000100000000 x0 : 0000000000000026 [ 80.633542][ T5356] Call trace: [ 80.634087][ T5356] __btrfs_unlink_inode+0x904/0xaec [ 80.634955][ T5356] btrfs_unlink+0x108/0x258 [ 80.635711][ T5356] vfs_unlink+0x2e0/0x4f4 [ 80.636431][ T5356] do_unlinkat+0x328/0x618 [ 80.637155][ T5356] __arm64_sys_unlinkat+0xe0/0xfc [ 80.637989][ T5356] invoke_syscall+0x98/0x2b0 [ 80.638774][ T5356] el0_svc_common+0x138/0x258 [ 80.639564][ T5356] do_el0_svc+0x58/0x13c [ 80.640278][ T5356] el0_svc+0x78/0x1d0 [ 80.640988][ T5356] el0t_64_sync_handler+0xcc/0xe4 [ 80.641792][ T5356] el0t_64_sync+0x1a0/0x1a4 [ 80.642515][ T5356] irq event stamp: 79420 [ 80.643183][ T5356] hardirqs last enabled at (79419): [] __up_console_sem+0xb4/0xfc [ 80.644708][ T5356] hardirqs last disabled at (79420): [] el1_dbg+0x24/0x80 [ 80.646153][ T5356] softirqs last enabled at (79400): [] handle_softirqs+0xa40/0xbe4 [ 80.647777][ T5356] softirqs last disabled at (79333): [] __irq_exit_rcu+0x240/0x43c [ 80.649351][ T5356] ---[ end trace 4581dd724c861e50 ]--- [ 80.650892][ T5356] BTRFS: error (device loop0) in __btrfs_unlink_inode:4182: errno=-12 Out of memory [ 80.653020][ T5356] BTRFS info (device loop0): forced readonly [ 80.830557][ T5378] loop0: detected capacity change from 0 to 32768 [ 80.866781][ T5378] BTRFS: device fsid c9fe44da-de57-406a-8241-57ec7d4412cf devid 1 transid 8 /dev/loop0 scanned by syz.0.35 (5378) [ 80.870073][ T5378] BTRFS info (device loop0): using crc32c (crc32c-generic) checksum algorithm [ 80.871458][ T5378] BTRFS info (device loop0): using free space tree [ 80.872422][ T5378] BTRFS info (device loop0): has skinny extents [ 80.879983][ T5378] BTRFS info (device loop0): enabling ssd optimizations [ 80.884074][ T5378] FAULT_INJECTION: forcing a failure. [ 80.884074][ T5378] name failslab, interval 1, probability 0, space 0, times 0 [ 80.886166][ T5378] CPU: 1 PID: 5378 Comm: syz.0.35 Tainted: G W syzkaller #0 [ 80.887647][ T5378] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/18/2026 [ 80.889325][ T5378] Call trace: [ 80.889832][ T5378] dump_backtrace+0x0/0x458 [ 80.890551][ T5378] show_stack+0x2c/0x3c [ 80.891200][ T5378] __dump_stack+0x30/0x40 [ 80.891891][ T5378] dump_stack_lvl+0xf4/0x15c [ 80.892577][ T5378] dump_stack+0x1c/0x5c [ 80.893244][ T5378] should_fail+0x3bc/0x514 [ 80.893906][ T5378] __should_failslab+0xbc/0x10c [ 80.894694][ T5378] should_failslab+0x10/0x28 [ 80.895438][ T5378] slab_pre_alloc_hook+0x64/0xe8 [ 80.896252][ T5378] kmem_cache_alloc_trace+0x98/0x3ec [ 80.897116][ T5378] btrfs_delete_delayed_dir_index+0x22c/0x56c [ 80.898120][ T5378] __btrfs_unlink_inode+0x350/0xaec [ 80.899003][ T5378] btrfs_unlink+0x108/0x258 [ 80.899772][ T5378] vfs_unlink+0x2e0/0x4f4 [ 80.900492][ T5378] do_unlinkat+0x328/0x618 [ 80.901236][ T5378] __arm64_sys_unlinkat+0xe0/0xfc [ 80.902115][ T5378] invoke_syscall+0x98/0x2b0 [ 80.902848][ T5378] el0_svc_common+0x138/0x258 [ 80.903615][ T5378] do_el0_svc+0x58/0x13c [ 80.904282][ T5378] el0_svc+0x78/0x1d0 [ 80.904905][ T5378] el0t_64_sync_handler+0xcc/0xe4 [ 80.905700][ T5378] el0t_64_sync+0x1a0/0x1a4 [ 80.906958][ T5378] ------------[ cut here ]------------ [ 80.907923][ T5378] WARNING: CPU: 1 PID: 5378 at fs/btrfs/inode.c:4182 __btrfs_unlink_inode+0x904/0xaec [ 80.909397][ T5378] Modules linked in: [ 80.909990][ T5378] CPU: 1 PID: 5378 Comm: syz.0.35 Tainted: G W syzkaller #0 [ 80.911332][ T5378] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/18/2026 [ 80.912809][ T5378] pstate: 62400005 (nZCv daif +PAN -UAO +TCO -DIT -SSBS BTYPE=--) [ 80.913962][ T5378] pc : __btrfs_unlink_inode+0x904/0xaec [ 80.914834][ T5378] lr : __btrfs_unlink_inode+0x904/0xaec [ 80.915733][ T5378] sp : ffff800021337a60 [ 80.916337][ T5378] x29: ffff800021337b10 x28: ffff0000d225a000 x27: ffff0000e2b7d810 [ 80.917572][ T5378] x26: 0000000000000100 x25: 00000000fffffff4 x24: ffff0000d19606e0 [ 80.918768][ T5378] x23: ffff700004266f54 x22: dfff800000000000 x21: ffff0000ec41a740 [ 80.920133][ T5378] x20: ffff0000deba7ec8 x19: 1fffe0001bd74fd9 x18: 0000000000000001 [ 80.921543][ T5378] x17: 0000000000000000 x16: ffff80001125f448 x15: 00000000ffffffff [ 80.922894][ T5378] x14: 0000000000000001 x13: 1fffe000341f47ab x12: 0000000000ff0100 [ 80.924235][ T5378] x11: 0000000000000000 x10: 0000000000000000 x9 : cc42e0578dcce800 [ 80.925560][ T5378] x8 : cc42e0578dcce800 x7 : 0000000000000001 x6 : 0000000000000001 [ 80.926909][ T5378] x5 : ffff800021337378 x4 : ffff80001437f3e0 x3 : ffff800008509220 [ 80.928285][ T5378] x2 : 0000000000000001 x1 : 0000000100000000 x0 : 0000000000000026 [ 80.929645][ T5378] Call trace: [ 80.930185][ T5378] __btrfs_unlink_inode+0x904/0xaec [ 80.931054][ T5378] btrfs_unlink+0x108/0x258 [ 80.931833][ T5378] vfs_unlink+0x2e0/0x4f4 [ 80.932549][ T5378] do_unlinkat+0x328/0x618 [ 80.933314][ T5378] __arm64_sys_unlinkat+0xe0/0xfc [ 80.934145][ T5378] invoke_syscall+0x98/0x2b0 [ 80.934917][ T5378] el0_svc_common+0x138/0x258 [ 80.935689][ T5378] do_el0_svc+0x58/0x13c [ 80.936383][ T5378] el0_svc+0x78/0x1d0 [ 80.937068][ T5378] el0t_64_sync_handler+0xcc/0xe4 [ 80.937935][ T5378] el0t_64_sync+0x1a0/0x1a4 [ 80.938676][ T5378] irq event stamp: 78870 [ 80.939371][ T5378] hardirqs last enabled at (78869): [] __up_console_sem+0xb4/0xfc [ 80.940979][ T5378] hardirqs last disabled at (78870): [] el1_dbg+0x24/0x80 [ 80.942415][ T5378] softirqs last enabled at (78850): [] handle_softirqs+0xa40/0xbe4 [ 80.943926][ T5378] softirqs last disabled at (78809): [] __irq_exit_rcu+0x240/0x43c [ 80.945466][ T5378] ---[ end trace 4581dd724c861e51 ]--- [ 80.946746][ T5378] BTRFS: error (device loop0) in __btrfs_unlink_inode:4182: errno=-12 Out of memory [ 80.948245][ T5378] BTRFS info (device loop0): forced readonly [ 81.080779][ T5400] loop0: detected capacity change from 0 to 32768 [ 81.088407][ T5400] BTRFS: device fsid c9fe44da-de57-406a-8241-57ec7d4412cf devid 1 transid 8 /dev/loop0 scanned by syz.0.36 (5400) [ 81.092708][ T5400] BTRFS info (device loop0): using crc32c (crc32c-generic) checksum algorithm [ 81.094578][ T5400] BTRFS info (device loop0): using free space tree [ 81.095693][ T5400] BTRFS info (device loop0): has skinny extents [ 81.114131][ T5400] BTRFS info (device loop0): enabling ssd optimizations [ 81.117965][ T5400] FAULT_INJECTION: forcing a failure. [ 81.117965][ T5400] name failslab, interval 1, probability 0, space 0, times 0 [ 81.119985][ T5400] CPU: 1 PID: 5400 Comm: syz.0.36 Tainted: G W syzkaller #0 [ 81.121318][ T5400] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/18/2026 [ 81.122989][ T5400] Call trace: [ 81.123534][ T5400] dump_backtrace+0x0/0x458 [ 81.124286][ T5400] show_stack+0x2c/0x3c [ 81.124992][ T5400] __dump_stack+0x30/0x40 [ 81.125745][ T5400] dump_stack_lvl+0xf4/0x15c [ 81.126490][ T5400] dump_stack+0x1c/0x5c [ 81.127174][ T5400] should_fail+0x3bc/0x514 [ 81.127893][ T5400] __should_failslab+0xbc/0x10c [ 81.128661][ T5400] should_failslab+0x10/0x28 [ 81.129369][ T5400] slab_pre_alloc_hook+0x64/0xe8 [ 81.130135][ T5400] kmem_cache_alloc_trace+0x98/0x3ec [ 81.130913][ T5400] btrfs_delete_delayed_dir_index+0x22c/0x56c [ 81.131864][ T5400] __btrfs_unlink_inode+0x350/0xaec [ 81.132736][ T5400] btrfs_unlink+0x108/0x258 [ 81.133455][ T5400] vfs_unlink+0x2e0/0x4f4 [ 81.134106][ T5400] do_unlinkat+0x328/0x618 [ 81.134774][ T5400] __arm64_sys_unlinkat+0xe0/0xfc [ 81.135564][ T5400] invoke_syscall+0x98/0x2b0 [ 81.136314][ T5400] el0_svc_common+0x138/0x258 [ 81.137029][ T5400] do_el0_svc+0x58/0x13c [ 81.137695][ T5400] el0_svc+0x78/0x1d0 [ 81.138314][ T5400] el0t_64_sync_handler+0xcc/0xe4 [ 81.139063][ T5400] el0t_64_sync+0x1a0/0x1a4 [ 81.141611][ T5400] ------------[ cut here ]------------ [ 81.142550][ T5400] WARNING: CPU: 1 PID: 5400 at fs/btrfs/inode.c:4182 __btrfs_unlink_inode+0x904/0xaec [ 81.143985][ T5400] Modules linked in: [ 81.144565][ T5400] CPU: 1 PID: 5400 Comm: syz.0.36 Tainted: G W syzkaller #0 [ 81.145901][ T5400] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/18/2026 [ 81.147423][ T5400] pstate: 62400005 (nZCv daif +PAN -UAO +TCO -DIT -SSBS BTYPE=--) [ 81.148732][ T5400] pc : __btrfs_unlink_inode+0x904/0xaec [ 81.149666][ T5400] lr : __btrfs_unlink_inode+0x904/0xaec [ 81.150591][ T5400] sp : ffff800021337a60 [ 81.151252][ T5400] x29: ffff800021337b10 x28: ffff0000ca530000 x27: ffff0000e2bc8010 [ 81.152615][ T5400] x26: 0000000000000100 x25: 00000000fffffff4 x24: ffff0000d665bf20 [ 81.153872][ T5400] x23: ffff700004266f54 x22: dfff800000000000 x21: ffff0000ec578000 [ 81.155116][ T5400] x20: ffff0000deba7478 x19: 1fffe0001bd74e8f x18: 0000000000000001 [ 81.156453][ T5400] x17: 0000000000000000 x16: ffff80001125f448 x15: 00000000ffffffff [ 81.157797][ T5400] x14: 0000000000000001 x13: 1fffe000341f47ab x12: 0000000000ff0100 [ 81.159097][ T5400] x11: 0000000000000000 x10: 0000000000000000 x9 : a867fd35d1d5ed00 [ 81.160382][ T5400] x8 : a867fd35d1d5ed00 x7 : 0000000000000001 x6 : 0000000000000001 [ 81.161645][ T5400] x5 : ffff800021337378 x4 : ffff80001437f3e0 x3 : ffff800008509220 [ 81.162927][ T5400] x2 : 0000000000000001 x1 : 0000000100000000 x0 : 0000000000000026 [ 81.164258][ T5400] Call trace: [ 81.164828][ T5400] __btrfs_unlink_inode+0x904/0xaec [ 81.165629][ T5400] btrfs_unlink+0x108/0x258 [ 81.166338][ T5400] vfs_unlink+0x2e0/0x4f4 [ 81.167057][ T5400] do_unlinkat+0x328/0x618 [ 81.167797][ T5400] __arm64_sys_unlinkat+0xe0/0xfc [ 81.168665][ T5400] invoke_syscall+0x98/0x2b0 [ 81.169454][ T5400] el0_svc_common+0x138/0x258 [ 81.170243][ T5400] do_el0_svc+0x58/0x13c [ 81.170924][ T5400] el0_svc+0x78/0x1d0 [ 81.171554][ T5400] el0t_64_sync_handler+0xcc/0xe4 [ 81.172364][ T5400] el0t_64_sync+0x1a0/0x1a4 [ 81.173095][ T5400] irq event stamp: 78816 [ 81.173802][ T5400] hardirqs last enabled at (78815): [] __up_console_sem+0xb4/0xfc [ 81.175397][ T5400] hardirqs last disabled at (78816): [] el1_dbg+0x24/0x80 [ 81.176815][ T5400] softirqs last enabled at (78796): [] handle_softirqs+0xa40/0xbe4 [ 81.178339][ T5400] softirqs last disabled at (78761): [] __irq_exit_rcu+0x240/0x43c [ 81.179878][ T5400] ---[ end trace 4581dd724c861e52 ]--- [ 81.183097][ T5400] BTRFS: error (device loop0) in __btrfs_unlink_inode:4182: errno=-12 Out of memory [ 81.184653][ T5400] BTRFS info (device loop0): forced readonly [ 81.353682][ T5422] loop0: detected capacity change from 0 to 32768 [ 81.405068][ T5422] BTRFS: device fsid c9fe44da-de57-406a-8241-57ec7d4412cf devid 1 transid 8 /dev/loop0 scanned by syz.0.37 (5422) [ 81.408163][ T5422] BTRFS info (device loop0): using crc32c (crc32c-generic) checksum algorithm [ 81.409512][ T5422] BTRFS info (device loop0): using free space tree [ 81.410621][ T5422] BTRFS info (device loop0): has skinny extents [ 81.422290][ T5422] BTRFS info (device loop0): enabling ssd optimizations [ 81.426534][ T5422] FAULT_INJECTION: forcing a failure. [ 81.426534][ T5422] name failslab, interval 1, probability 0, space 0, times 0 [ 81.428667][ T5422] CPU: 1 PID: 5422 Comm: syz.0.37 Tainted: G W syzkaller #0 [ 81.430046][ T5422] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/18/2026 [ 81.431690][ T5422] Call trace: [ 81.432260][ T5422] dump_backtrace+0x0/0x458 [ 81.433026][ T5422] show_stack+0x2c/0x3c [ 81.433667][ T5422] __dump_stack+0x30/0x40 [ 81.434343][ T5422] dump_stack_lvl+0xf4/0x15c [ 81.435068][ T5422] dump_stack+0x1c/0x5c [ 81.435717][ T5422] should_fail+0x3bc/0x514 [ 81.436441][ T5422] __should_failslab+0xbc/0x10c [ 81.437221][ T5422] should_failslab+0x10/0x28 [ 81.437948][ T5422] slab_pre_alloc_hook+0x64/0xe8 [ 81.438718][ T5422] kmem_cache_alloc+0x94/0x3d4 [ 81.439476][ T5422] btrfs_alloc_path+0x5c/0x68 [ 81.440179][ T5422] __btrfs_unlink_inode+0x1dc/0xaec [ 81.440931][ T5422] btrfs_unlink+0x108/0x258 [ 81.441661][ T5422] vfs_unlink+0x2e0/0x4f4 [ 81.442346][ T5422] do_unlinkat+0x328/0x618 [ 81.443040][ T5422] __arm64_sys_unlinkat+0xe0/0xfc [ 81.443839][ T5422] invoke_syscall+0x98/0x2b0 [ 81.444614][ T5422] el0_svc_common+0x138/0x258 [ 81.445345][ T5422] do_el0_svc+0x58/0x13c [ 81.446016][ T5422] el0_svc+0x78/0x1d0 [ 81.446681][ T5422] el0t_64_sync_handler+0xcc/0xe4 [ 81.447498][ T5422] el0t_64_sync+0x1a0/0x1a4 [ 81.589237][ T5444] loop0: detected capacity change from 0 to 32768 [ 81.596384][ T5444] BTRFS: device fsid c9fe44da-de57-406a-8241-57ec7d4412cf devid 1 transid 8 /dev/loop0 scanned by syz.0.38 (5444) [ 81.599431][ T5444] BTRFS info (device loop0): using crc32c (crc32c-generic) checksum algorithm [ 81.600862][ T5444] BTRFS info (device loop0): using free space tree [ 81.601891][ T5444] BTRFS info (device loop0): has skinny extents [ 81.609557][ T5444] BTRFS info (device loop0): enabling ssd optimizations [ 81.613476][ T5444] FAULT_INJECTION: forcing a failure. [ 81.613476][ T5444] name failslab, interval 1, probability 0, space 0, times 0 [ 81.615613][ T5444] CPU: 0 PID: 5444 Comm: syz.0.38 Tainted: G W syzkaller #0 [ 81.616950][ T5444] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/18/2026 [ 81.618500][ T5444] Call trace: [ 81.619025][ T5444] dump_backtrace+0x0/0x458 [ 81.619722][ T5444] show_stack+0x2c/0x3c [ 81.620419][ T5444] __dump_stack+0x30/0x40 [ 81.621110][ T5444] dump_stack_lvl+0xf4/0x15c [ 81.621851][ T5444] dump_stack+0x1c/0x5c [ 81.622447][ T5444] should_fail+0x3bc/0x514 [ 81.623150][ T5444] __should_failslab+0xbc/0x10c [ 81.623902][ T5444] should_failslab+0x10/0x28 [ 81.624677][ T5444] slab_pre_alloc_hook+0x64/0xe8 [ 81.625522][ T5444] kmem_cache_alloc_trace+0x98/0x3ec [ 81.626388][ T5444] btrfs_delete_delayed_dir_index+0x22c/0x56c [ 81.627390][ T5444] __btrfs_unlink_inode+0x350/0xaec [ 81.628253][ T5444] btrfs_unlink+0x108/0x258 [ 81.628994][ T5444] vfs_unlink+0x2e0/0x4f4 [ 81.629700][ T5444] do_unlinkat+0x328/0x618 [ 81.630432][ T5444] __arm64_sys_unlinkat+0xe0/0xfc [ 81.631284][ T5444] invoke_syscall+0x98/0x2b0 [ 81.632004][ T5444] el0_svc_common+0x138/0x258 [ 81.632738][ T5444] do_el0_svc+0x58/0x13c [ 81.633425][ T5444] el0_svc+0x78/0x1d0 [ 81.634044][ T5444] el0t_64_sync_handler+0xcc/0xe4 [ 81.634890][ T5444] el0t_64_sync+0x1a0/0x1a4 [ 81.635803][ T5444] ------------[ cut here ]------------ [ 81.636959][ T5444] WARNING: CPU: 0 PID: 5444 at fs/btrfs/inode.c:4182 __btrfs_unlink_inode+0x904/0xaec [ 81.638447][ T5444] Modules linked in: [ 81.639062][ T5444] CPU: 0 PID: 5444 Comm: syz.0.38 Tainted: G W syzkaller #0 [ 81.640450][ T5444] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/18/2026 [ 81.642102][ T5444] pstate: 62400005 (nZCv daif +PAN -UAO +TCO -DIT -SSBS BTYPE=--) [ 81.643461][ T5444] pc : __btrfs_unlink_inode+0x904/0xaec [ 81.644359][ T5444] lr : __btrfs_unlink_inode+0x904/0xaec [ 81.645244][ T5444] sp : ffff800021257a60 [ 81.645910][ T5444] x29: ffff800021257b10 x28: ffff0000d1f2a000 x27: ffff0000e2b7d410 [ 81.647235][ T5444] x26: 0000000000000100 x25: 00000000fffffff4 x24: ffff0000cf5b7160 [ 81.648466][ T5444] x23: ffff70000424af54 x22: dfff800000000000 x21: ffff0000ec41ce80 [ 81.649687][ T5444] x20: ffff0000de904c08 x19: 1fffe0001bd20981 x18: 0000000000000001 [ 81.651068][ T5444] x17: 0000000000000000 x16: ffff800008304af8 x15: 00000000ffffffff [ 81.652370][ T5444] x14: 0000000000000001 x13: 1ffff0000424ae6c x12: 0000000000ff0100 [ 81.653702][ T5444] x11: 0000000000000000 x10: 0000000000000000 x9 : 98c9e857dfcfd500 [ 81.654972][ T5444] x8 : 98c9e857dfcfd500 x7 : 0000000000000001 x6 : 0000000000000001 [ 81.656251][ T5444] x5 : ffff800021257378 x4 : ffff80001437f3e0 x3 : ffff800008304c08 [ 81.657568][ T5444] x2 : 0000000000000001 x1 : 0000000100000000 x0 : 0000000000000026 [ 81.658873][ T5444] Call trace: [ 81.659444][ T5444] __btrfs_unlink_inode+0x904/0xaec [ 81.660313][ T5444] btrfs_unlink+0x108/0x258 [ 81.661020][ T5444] vfs_unlink+0x2e0/0x4f4 [ 81.661739][ T5444] do_unlinkat+0x328/0x618 [ 81.662469][ T5444] __arm64_sys_unlinkat+0xe0/0xfc [ 81.663300][ T5444] invoke_syscall+0x98/0x2b0 [ 81.664090][ T5444] el0_svc_common+0x138/0x258 [ 81.664884][ T5444] do_el0_svc+0x58/0x13c [ 81.665638][ T5444] el0_svc+0x78/0x1d0 [ 81.666304][ T5444] el0t_64_sync_handler+0xcc/0xe4 [ 81.667118][ T5444] el0t_64_sync+0x1a0/0x1a4 [ 81.667833][ T5444] irq event stamp: 79198 [ 81.668509][ T5444] hardirqs last enabled at (79197): [] __up_console_sem+0xb4/0xfc [ 81.670074][ T5444] hardirqs last disabled at (79198): [] el1_dbg+0x24/0x80 [ 81.671504][ T5444] softirqs last enabled at (79188): [] handle_softirqs+0xa40/0xbe4 [ 81.673097][ T5444] softirqs last disabled at (79081): [] __irq_exit_rcu+0x240/0x43c [ 81.674716][ T5444] ---[ end trace 4581dd724c861e53 ]--- [ 81.675867][ T5444] BTRFS: error (device loop0) in __btrfs_unlink_inode:4182: errno=-12 Out of memory [ 81.677375][ T5444] BTRFS info (device loop0): forced readonly [ 81.806193][ T5466] loop0: detected capacity change from 0 to 32768 [ 81.875494][ T5466] BTRFS: device fsid c9fe44da-de57-406a-8241-57ec7d4412cf devid 1 transid 8 /dev/loop0 scanned by syz.0.39 (5466) [ 81.878451][ T5466] BTRFS info (device loop0): using crc32c (crc32c-generic) checksum algorithm [ 81.879917][ T5466] BTRFS info (device loop0): using free space tree [ 81.881019][ T5466] BTRFS info (device loop0): has skinny extents [ 81.891479][ T5466] BTRFS info (device loop0): enabling ssd optimizations [ 81.895747][ T5466] FAULT_INJECTION: forcing a failure. [ 81.895747][ T5466] name failslab, interval 1, probability 0, space 0, times 0 [ 81.897806][ T5466] CPU: 0 PID: 5466 Comm: syz.0.39 Tainted: G W syzkaller #0 [ 81.899205][ T5466] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/18/2026 [ 81.900800][ T5466] Call trace: [ 81.901316][ T5466] dump_backtrace+0x0/0x458 [ 81.902086][ T5466] show_stack+0x2c/0x3c [ 81.902783][ T5466] __dump_stack+0x30/0x40 [ 81.903518][ T5466] dump_stack_lvl+0xf4/0x15c [ 81.904256][ T5466] dump_stack+0x1c/0x5c [ 81.904931][ T5466] should_fail+0x3bc/0x514 [ 81.905674][ T5466] __should_failslab+0xbc/0x10c [ 81.906478][ T5466] should_failslab+0x10/0x28 [ 81.907251][ T5466] slab_pre_alloc_hook+0x64/0xe8 [ 81.908041][ T5466] kmem_cache_alloc_trace+0x98/0x3ec [ 81.908957][ T5466] btrfs_delete_delayed_dir_index+0x22c/0x56c [ 81.909987][ T5466] __btrfs_unlink_inode+0x350/0xaec [ 81.910872][ T5466] btrfs_unlink+0x108/0x258 [ 81.911667][ T5466] vfs_unlink+0x2e0/0x4f4 [ 81.912437][ T5466] do_unlinkat+0x328/0x618 [ 81.913174][ T5466] __arm64_sys_unlinkat+0xe0/0xfc [ 81.913984][ T5466] invoke_syscall+0x98/0x2b0 [ 81.914699][ T5466] el0_svc_common+0x138/0x258 [ 81.915426][ T5466] do_el0_svc+0x58/0x13c [ 81.916090][ T5466] el0_svc+0x78/0x1d0 [ 81.916745][ T5466] el0t_64_sync_handler+0xcc/0xe4 [ 81.917597][ T5466] el0t_64_sync+0x1a0/0x1a4 [ 81.919080][ T5466] ------------[ cut here ]------------ [ 81.920041][ T5466] WARNING: CPU: 0 PID: 5466 at fs/btrfs/inode.c:4182 __btrfs_unlink_inode+0x904/0xaec [ 81.921523][ T5466] Modules linked in: [ 81.922152][ T5466] CPU: 0 PID: 5466 Comm: syz.0.39 Tainted: G W syzkaller #0 [ 81.923543][ T5466] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/18/2026 [ 81.925164][ T5466] pstate: 62400005 (nZCv daif +PAN -UAO +TCO -DIT -SSBS BTYPE=--) [ 81.926403][ T5466] pc : __btrfs_unlink_inode+0x904/0xaec [ 81.927341][ T5466] lr : __btrfs_unlink_inode+0x904/0xaec [ 81.928302][ T5466] sp : ffff800021257a60 [ 81.929027][ T5466] x29: ffff800021257b10 x28: ffff0000d89e8000 x27: ffff0000e2bc9c10 [ 81.930410][ T5466] x26: 0000000000000100 x25: 00000000fffffff4 x24: ffff0000ec3c7c60 [ 81.931710][ T5466] x23: ffff70000424af54 x22: dfff800000000000 x21: ffff0000ec47d850 [ 81.933032][ T5466] x20: ffff0000de904e18 x19: 1fffe0001bd209c3 x18: 0000000000000001 [ 81.934384][ T5466] x17: 0000000000000000 x16: ffff80001125f448 x15: 00000000ffffffff [ 81.935704][ T5466] x14: 0000000000000001 x13: 1fffe000341f05ab x12: 0000000000ff0100 [ 81.937111][ T5466] x11: 0000000000000000 x10: 0000000000000000 x9 : 7c096bfed7363500 [ 81.938472][ T5466] x8 : 7c096bfed7363500 x7 : 0000000000000001 x6 : 0000000000000001 [ 81.939770][ T5466] x5 : ffff800021257378 x4 : ffff80001437f3e0 x3 : ffff800008509220 [ 81.941173][ T5466] x2 : 0000000000000001 x1 : 0000000100000000 x0 : 0000000000000026 [ 81.942567][ T5466] Call trace: [ 81.943109][ T5466] __btrfs_unlink_inode+0x904/0xaec [ 81.943964][ T5466] btrfs_unlink+0x108/0x258 [ 81.944701][ T5466] vfs_unlink+0x2e0/0x4f4 [ 81.945416][ T5466] do_unlinkat+0x328/0x618 [ 81.946078][ T5466] __arm64_sys_unlinkat+0xe0/0xfc [ 81.946845][ T5466] invoke_syscall+0x98/0x2b0 [ 81.947549][ T5466] el0_svc_common+0x138/0x258 [ 81.948301][ T5466] do_el0_svc+0x58/0x13c [ 81.948940][ T5466] el0_svc+0x78/0x1d0 [ 81.949557][ T5466] el0t_64_sync_handler+0xcc/0xe4 [ 81.950318][ T5466] el0t_64_sync+0x1a0/0x1a4 [ 81.951046][ T5466] irq event stamp: 79314 [ 81.951770][ T5466] hardirqs last enabled at (79313): [] __up_console_sem+0xb4/0xfc [ 81.953265][ T5466] hardirqs last disabled at (79314): [] el1_dbg+0x24/0x80 [ 81.954634][ T5466] softirqs last enabled at (79294): [] handle_softirqs+0xa40/0xbe4 [ 81.956109][ T5466] softirqs last disabled at (79251): [] __irq_exit_rcu+0x240/0x43c [ 81.957494][ T5466] ---[ end trace 4581dd724c861e54 ]--- [ 81.959787][ T5466] BTRFS: error (device loop0) in __btrfs_unlink_inode:4182: errno=-12 Out of memory [ 81.961296][ T5466] BTRFS info (device loop0): forced readonly [ 82.092041][ T5488] loop0: detected capacity change from 0 to 32768 [ 82.094775][ T5488] BTRFS: device fsid c9fe44da-de57-406a-8241-57ec7d4412cf devid 1 transid 8 /dev/loop0 scanned by syz.0.40 (5488) [ 82.097978][ T5488] BTRFS info (device loop0): using crc32c (crc32c-generic) checksum algorithm [ 82.099493][ T5488] BTRFS info (device loop0): using free space tree [ 82.100605][ T5488] BTRFS info (device loop0): has skinny extents [ 82.118417][ T5488] BTRFS info (device loop0): enabling ssd optimizations [ 82.122366][ T5488] FAULT_INJECTION: forcing a failure. [ 82.122366][ T5488] name failslab, interval 1, probability 0, space 0, times 0 [ 82.125084][ T5488] CPU: 1 PID: 5488 Comm: syz.0.40 Tainted: G W syzkaller #0 [ 82.126415][ T5488] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/18/2026 [ 82.128163][ T5488] Call trace: [ 82.128724][ T5488] dump_backtrace+0x0/0x458 [ 82.129503][ T5488] show_stack+0x2c/0x3c [ 82.130237][ T5488] __dump_stack+0x30/0x40 [ 82.130939][ T5488] dump_stack_lvl+0xf4/0x15c [ 82.131691][ T5488] dump_stack+0x1c/0x5c [ 82.132428][ T5488] should_fail+0x3bc/0x514 [ 82.133202][ T5488] __should_failslab+0xbc/0x10c [ 82.134068][ T5488] should_failslab+0x10/0x28 [ 82.134855][ T5488] slab_pre_alloc_hook+0x64/0xe8 [ 82.135715][ T5488] kmem_cache_alloc_trace+0x98/0x3ec [ 82.136676][ T5488] btrfs_delete_delayed_dir_index+0x22c/0x56c [ 82.137747][ T5488] __btrfs_unlink_inode+0x350/0xaec [ 82.138637][ T5488] btrfs_unlink+0x108/0x258 [ 82.139359][ T5488] vfs_unlink+0x2e0/0x4f4 [ 82.140108][ T5488] do_unlinkat+0x328/0x618 [ 82.140861][ T5488] __arm64_sys_unlinkat+0xe0/0xfc [ 82.141724][ T5488] invoke_syscall+0x98/0x2b0 [ 82.142493][ T5488] el0_svc_common+0x138/0x258 [ 82.143302][ T5488] do_el0_svc+0x58/0x13c [ 82.144012][ T5488] el0_svc+0x78/0x1d0 [ 82.144684][ T5488] el0t_64_sync_handler+0xcc/0xe4 [ 82.145474][ T5488] el0t_64_sync+0x1a0/0x1a4 [ 82.148036][ T5488] ------------[ cut here ]------------ [ 82.149316][ T5488] WARNING: CPU: 1 PID: 5488 at fs/btrfs/inode.c:4182 __btrfs_unlink_inode+0x904/0xaec [ 82.150905][ T5488] Modules linked in: [ 82.151564][ T5488] CPU: 1 PID: 5488 Comm: syz.0.40 Tainted: G W syzkaller #0 [ 82.153040][ T5488] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/18/2026 [ 82.154791][ T5488] pstate: 62400005 (nZCv daif +PAN -UAO +TCO -DIT -SSBS BTYPE=--) [ 82.156050][ T5488] pc : __btrfs_unlink_inode+0x904/0xaec [ 82.156946][ T5488] lr : __btrfs_unlink_inode+0x904/0xaec [ 82.157903][ T5488] sp : ffff800021257a60 [ 82.158575][ T5488] x29: ffff800021257b10 x28: ffff0000dc0f4000 x27: ffff0000e2bca010 [ 82.159857][ T5488] x26: 0000000000000100 x25: 00000000fffffff4 x24: ffff0000d17cc0b0 [ 82.161172][ T5488] x23: ffff70000424af54 x22: dfff800000000000 x21: ffff0000ec47b110 [ 82.162555][ T5488] x20: ffff0000e289b1b8 x19: 1fffe0001c513637 x18: 0000000000000001 [ 82.163939][ T5488] x17: 0000000000000000 x16: ffff80001125f448 x15: 00000000ffffffff [ 82.165215][ T5488] x14: 0000000000000001 x13: 1fffe000341f47ab x12: 0000000000ff0100 [ 82.166514][ T5488] x11: 0000000000000000 x10: 0000000000000000 x9 : ee4c599d239e9e00 [ 82.167875][ T5488] x8 : ee4c599d239e9e00 x7 : 0000000000000001 x6 : 0000000000000001 [ 82.169258][ T5488] x5 : ffff800021257378 x4 : ffff80001437f3e0 x3 : ffff800008509220 [ 82.170701][ T5488] x2 : 0000000000000001 x1 : 0000000100000000 x0 : 0000000000000026 [ 82.172013][ T5488] Call trace: [ 82.172574][ T5488] __btrfs_unlink_inode+0x904/0xaec [ 82.173471][ T5488] btrfs_unlink+0x108/0x258 [ 82.174249][ T5488] vfs_unlink+0x2e0/0x4f4 [ 82.174942][ T5488] do_unlinkat+0x328/0x618 [ 82.175641][ T5488] __arm64_sys_unlinkat+0xe0/0xfc [ 82.176455][ T5488] invoke_syscall+0x98/0x2b0 [ 82.177234][ T5488] el0_svc_common+0x138/0x258 [ 82.178045][ T5488] do_el0_svc+0x58/0x13c [ 82.178800][ T5488] el0_svc+0x78/0x1d0 [ 82.179464][ T5488] el0t_64_sync_handler+0xcc/0xe4 [ 82.180314][ T5488] el0t_64_sync+0x1a0/0x1a4 [ 82.181023][ T5488] irq event stamp: 78946 [ 82.181705][ T5488] hardirqs last enabled at (78945): [] __up_console_sem+0xb4/0xfc [ 82.183302][ T5488] hardirqs last disabled at (78946): [] el1_dbg+0x24/0x80 [ 82.184879][ T5488] softirqs last enabled at (78920): [] handle_softirqs+0xa40/0xbe4 [ 82.186525][ T5488] softirqs last disabled at (78907): [] __irq_exit_rcu+0x240/0x43c [ 82.188043][ T5488] ---[ end trace 4581dd724c861e55 ]--- [ 82.191014][ T5488] BTRFS: error (device loop0) in __btrfs_unlink_inode:4182: errno=-12 Out of memory [ 82.192572][ T5488] BTRFS info (device loop0): forced readonly [ 82.381944][ T5509] loop0: detected capacity change from 0 to 32768 [ 82.417805][ T5509] BTRFS: device fsid c9fe44da-de57-406a-8241-57ec7d4412cf devid 1 transid 8 /dev/loop0 scanned by syz.0.41 (5509) [ 82.422059][ T5509] BTRFS info (device loop0): using crc32c (crc32c-generic) checksum algorithm [ 82.423434][ T5509] BTRFS info (device loop0): using free space tree [ 82.426032][ T5509] BTRFS info (device loop0): has skinny extents [ 82.432991][ T5509] BTRFS info (device loop0): enabling ssd optimizations [ 82.437085][ T5509] FAULT_INJECTION: forcing a failure. [ 82.437085][ T5509] name failslab, interval 1, probability 0, space 0, times 0 [ 82.439116][ T5509] CPU: 1 PID: 5509 Comm: syz.0.41 Tainted: G W syzkaller #0 [ 82.440465][ T5509] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/18/2026 [ 82.442158][ T5509] Call trace: [ 82.442702][ T5509] dump_backtrace+0x0/0x458 [ 82.443459][ T5509] show_stack+0x2c/0x3c [ 82.444149][ T5509] __dump_stack+0x30/0x40 [ 82.444904][ T5509] dump_stack_lvl+0xf4/0x15c [ 82.445626][ T5509] dump_stack+0x1c/0x5c [ 82.446320][ T5509] should_fail+0x3bc/0x514 [ 82.447039][ T5509] __should_failslab+0xbc/0x10c [ 82.447858][ T5509] should_failslab+0x10/0x28 [ 82.448592][ T5509] slab_pre_alloc_hook+0x64/0xe8 [ 82.449394][ T5509] kmem_cache_alloc_trace+0x98/0x3ec [ 82.450299][ T5509] btrfs_delete_delayed_dir_index+0x22c/0x56c [ 82.451318][ T5509] __btrfs_unlink_inode+0x350/0xaec [ 82.452244][ T5509] btrfs_unlink+0x108/0x258 [ 82.453026][ T5509] vfs_unlink+0x2e0/0x4f4 [ 82.453689][ T5509] do_unlinkat+0x328/0x618 [ 82.454339][ T5509] __arm64_sys_unlinkat+0xe0/0xfc [ 82.455145][ T5509] invoke_syscall+0x98/0x2b0 [ 82.455831][ T5509] el0_svc_common+0x138/0x258 [ 82.456562][ T5509] do_el0_svc+0x58/0x13c [ 82.457275][ T5509] el0_svc+0x78/0x1d0 [ 82.457943][ T5509] el0t_64_sync_handler+0xcc/0xe4 [ 82.458792][ T5509] el0t_64_sync+0x1a0/0x1a4 [ 82.461504][ T5509] ------------[ cut here ]------------ [ 82.462479][ T5509] WARNING: CPU: 1 PID: 5509 at fs/btrfs/inode.c:4182 __btrfs_unlink_inode+0x904/0xaec [ 82.463988][ T5509] Modules linked in: [ 82.464599][ T5509] CPU: 1 PID: 5509 Comm: syz.0.41 Tainted: G W syzkaller #0 [ 82.465932][ T5509] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/18/2026 [ 82.467494][ T5509] pstate: 62400005 (nZCv daif +PAN -UAO +TCO -DIT -SSBS BTYPE=--) [ 82.468871][ T5509] pc : __btrfs_unlink_inode+0x904/0xaec [ 82.469726][ T5509] lr : __btrfs_unlink_inode+0x904/0xaec [ 82.470594][ T5509] sp : ffff800021c77a60 [ 82.471297][ T5509] x29: ffff800021c77b10 x28: ffff0000d62f0000 x27: ffff0000e2bca410 [ 82.472591][ T5509] x26: 0000000000000100 x25: 00000000fffffff4 x24: ffff0000db0089a0 [ 82.473849][ T5509] x23: ffff70000438ef54 x22: dfff800000000000 x21: ffff0000ec4793a0 [ 82.475065][ T5509] x20: ffff0000e289b318 x19: 1fffe0001c513663 x18: 0000000000000001 [ 82.476259][ T5509] x17: 0000000000000000 x16: ffff80001125f448 x15: 00000000ffffffff [ 82.477454][ T5509] x14: 0000000000000001 x13: 1fffe000341f47ab x12: 0000000000ff0100 [ 82.478789][ T5509] x11: 0000000000000000 x10: 0000000000000000 x9 : 74264294bf47cc00 [ 82.480198][ T5509] x8 : 74264294bf47cc00 x7 : 0000000000000001 x6 : 0000000000000001 [ 82.481559][ T5509] x5 : ffff800021c77378 x4 : ffff80001437f3e0 x3 : ffff800008509220 [ 82.482899][ T5509] x2 : 0000000000000001 x1 : 0000000100000000 x0 : 0000000000000026 [ 82.484248][ T5509] Call trace: [ 82.484769][ T5509] __btrfs_unlink_inode+0x904/0xaec [ 82.485601][ T5509] btrfs_unlink+0x108/0x258 [ 82.486304][ T5509] vfs_unlink+0x2e0/0x4f4 [ 82.486961][ T5509] do_unlinkat+0x328/0x618 [ 82.487649][ T5509] __arm64_sys_unlinkat+0xe0/0xfc [ 82.488430][ T5509] invoke_syscall+0x98/0x2b0 [ 82.489154][ T5509] el0_svc_common+0x138/0x258 [ 82.489896][ T5509] do_el0_svc+0x58/0x13c [ 82.490551][ T5509] el0_svc+0x78/0x1d0 [ 82.491186][ T5509] el0t_64_sync_handler+0xcc/0xe4 [ 82.492028][ T5509] el0t_64_sync+0x1a0/0x1a4 [ 82.492722][ T5509] irq event stamp: 78658 [ 82.493422][ T5509] hardirqs last enabled at (78657): [] __up_console_sem+0xb4/0xfc [ 82.494922][ T5509] hardirqs last disabled at (78658): [] el1_dbg+0x24/0x80 [ 82.496236][ T5509] softirqs last enabled at (78638): [] handle_softirqs+0xa40/0xbe4 [ 82.497718][ T5509] softirqs last disabled at (78625): [] __irq_exit_rcu+0x240/0x43c [ 82.499264][ T5509] ---[ end trace 4581dd724c861e56 ]--- [ 82.502310][ T5509] BTRFS: error (device loop0) in __btrfs_unlink_inode:4182: errno=-12 Out of memory [ 82.503667][ T5509] BTRFS info (device loop0): forced readonly [ 82.735127][ T5531] BTRFS: device fsid c9fe44da-de57-406a-8241-57ec7d4412cf devid 1 transid 8 /dev/loop0 scanned by syz.0.42 (5531) [ 82.742655][ T5531] BTRFS info (device loop0): using crc32c (crc32c-generic) checksum algorithm [ 82.744410][ T5531] BTRFS info (device loop0): using free space tree [ 82.745403][ T5531] BTRFS info (device loop0): has skinny extents [ 82.759286][ T5531] BTRFS info (device loop0): enabling ssd optimizations [ 82.763370][ T5531] FAULT_INJECTION: forcing a failure. [ 82.763370][ T5531] name failslab, interval 1, probability 0, space 0, times 0 [ 82.765985][ T5531] CPU: 1 PID: 5531 Comm: syz.0.42 Tainted: G W syzkaller #0 [ 82.767302][ T5531] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/18/2026 [ 82.768976][ T5531] Call trace: [ 82.769531][ T5531] dump_backtrace+0x0/0x458 [ 82.770312][ T5531] show_stack+0x2c/0x3c [ 82.770968][ T5531] __dump_stack+0x30/0x40 [ 82.771691][ T5531] dump_stack_lvl+0xf4/0x15c [ 82.772413][ T5531] dump_stack+0x1c/0x5c [ 82.773082][ T5531] should_fail+0x3bc/0x514 [ 82.773846][ T5531] __should_failslab+0xbc/0x10c [ 82.774674][ T5531] should_failslab+0x10/0x28 [ 82.775449][ T5531] slab_pre_alloc_hook+0x64/0xe8 [ 82.776286][ T5531] kmem_cache_alloc_trace+0x98/0x3ec [ 82.777156][ T5531] btrfs_delete_delayed_dir_index+0x22c/0x56c [ 82.778195][ T5531] __btrfs_unlink_inode+0x350/0xaec [ 82.779069][ T5531] btrfs_unlink+0x108/0x258 [ 82.779811][ T5531] vfs_unlink+0x2e0/0x4f4 [ 82.780536][ T5531] do_unlinkat+0x328/0x618 [ 82.781261][ T5531] __arm64_sys_unlinkat+0xe0/0xfc [ 82.782030][ T5531] invoke_syscall+0x98/0x2b0 [ 82.782777][ T5531] el0_svc_common+0x138/0x258 [ 82.783512][ T5531] do_el0_svc+0x58/0x13c [ 82.784233][ T5531] el0_svc+0x78/0x1d0 [ 82.784873][ T5531] el0t_64_sync_handler+0xcc/0xe4 [ 82.785697][ T5531] el0t_64_sync+0x1a0/0x1a4 [ 82.787763][ T5531] ------------[ cut here ]------------ [ 82.788711][ T5531] WARNING: CPU: 1 PID: 5531 at fs/btrfs/inode.c:4182 __btrfs_unlink_inode+0x904/0xaec [ 82.790294][ T5531] Modules linked in: [ 82.790968][ T5531] CPU: 1 PID: 5531 Comm: syz.0.42 Tainted: G W syzkaller #0 [ 82.792368][ T5531] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/18/2026 [ 82.793826][ T5531] pstate: 62400005 (nZCv daif +PAN -UAO +TCO -DIT -SSBS BTYPE=--) [ 82.795059][ T5531] pc : __btrfs_unlink_inode+0x904/0xaec [ 82.795921][ T5531] lr : __btrfs_unlink_inode+0x904/0xaec [ 82.796793][ T5531] sp : ffff800021f07a60 [ 82.797409][ T5531] x29: ffff800021f07b10 x28: ffff0000d4be8000 x27: ffff0000e2bca810 [ 82.798604][ T5531] x26: 0000000000000100 x25: 00000000fffffff4 x24: ffff0000cb3cf160 [ 82.799904][ T5531] x23: ffff7000043e0f54 x22: dfff800000000000 x21: ffff0000ec57ebf0 [ 82.801300][ T5531] x20: ffff0000e289b478 x19: 1fffe0001c51368f x18: 0000000000000001 [ 82.802615][ T5531] x17: 0000000000000000 x16: ffff80001125f448 x15: 00000000ffffffff [ 82.803866][ T5531] x14: 0000000000000001 x13: 1fffe000341f47ab x12: 0000000000ff0100 [ 82.805195][ T5531] x11: 0000000000000000 x10: 0000000000000000 x9 : 20d9b9751f3e2900 [ 82.806604][ T5531] x8 : 20d9b9751f3e2900 x7 : 0000000000000001 x6 : 0000000000000001 [ 82.807891][ T5531] x5 : ffff800021f07378 x4 : ffff80001437f3e0 x3 : ffff800008509220 [ 82.809252][ T5531] x2 : 0000000000000001 x1 : 0000000100000000 x0 : 0000000000000026 [ 82.810522][ T5531] Call trace: [ 82.811031][ T5531] __btrfs_unlink_inode+0x904/0xaec [ 82.811885][ T5531] btrfs_unlink+0x108/0x258 [ 82.812618][ T5531] vfs_unlink+0x2e0/0x4f4 [ 82.813341][ T5531] do_unlinkat+0x328/0x618 [ 82.814019][ T5531] __arm64_sys_unlinkat+0xe0/0xfc [ 82.814859][ T5531] invoke_syscall+0x98/0x2b0 [ 82.815614][ T5531] el0_svc_common+0x138/0x258 [ 82.816409][ T5531] do_el0_svc+0x58/0x13c [ 82.817099][ T5531] el0_svc+0x78/0x1d0 [ 82.817734][ T5531] el0t_64_sync_handler+0xcc/0xe4 [ 82.818490][ T5531] el0t_64_sync+0x1a0/0x1a4 [ 82.819222][ T5531] irq event stamp: 78630 [ 82.819903][ T5531] hardirqs last enabled at (78629): [] __up_console_sem+0xb4/0xfc [ 82.821460][ T5531] hardirqs last disabled at (78630): [] el1_dbg+0x24/0x80 [ 82.822906][ T5531] softirqs last enabled at (78610): [] handle_softirqs+0xa40/0xbe4 [ 82.824488][ T5531] softirqs last disabled at (78591): [] __irq_exit_rcu+0x240/0x43c [ 82.826047][ T5531] ---[ end trace 4581dd724c861e57 ]--- [ 82.828988][ T5531] BTRFS: error (device loop0) in __btrfs_unlink_inode:4182: errno=-12 Out of memory [ 82.830538][ T5531] BTRFS info (device loop0): forced readonly [ 83.068848][ T5553] BTRFS: device fsid c9fe44da-de57-406a-8241-57ec7d4412cf devid 1 transid 8 /dev/loop0 scanned by syz.0.43 (5553) [ 83.072191][ T5553] BTRFS info (device loop0): using crc32c (crc32c-generic) checksum algorithm [ 83.073546][ T5553] BTRFS info (device loop0): using free space tree [ 83.074709][ T5553] BTRFS info (device loop0): has skinny extents [ 83.084238][ T5553] BTRFS info (device loop0): enabling ssd optimizations [ 83.088620][ T5553] FAULT_INJECTION: forcing a failure. [ 83.088620][ T5553] name failslab, interval 1, probability 0, space 0, times 0 [ 83.090644][ T5553] CPU: 0 PID: 5553 Comm: syz.0.43 Tainted: G W syzkaller #0 [ 83.092005][ T5553] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/18/2026 [ 83.093616][ T5553] Call trace: [ 83.094170][ T5553] dump_backtrace+0x0/0x458 [ 83.094925][ T5553] show_stack+0x2c/0x3c [ 83.095561][ T5553] __dump_stack+0x30/0x40 [ 83.096250][ T5553] dump_stack_lvl+0xf4/0x15c [ 83.096965][ T5553] dump_stack+0x1c/0x5c [ 83.097593][ T5553] should_fail+0x3bc/0x514 [ 83.098299][ T5553] __should_failslab+0xbc/0x10c [ 83.099056][ T5553] should_failslab+0x10/0x28 [ 83.099849][ T5553] slab_pre_alloc_hook+0x64/0xe8 [ 83.100692][ T5553] kmem_cache_alloc_trace+0x98/0x3ec [ 83.101504][ T5553] btrfs_delete_delayed_dir_index+0x22c/0x56c [ 83.102339][ T5553] __btrfs_unlink_inode+0x350/0xaec [ 83.103158][ T5553] btrfs_unlink+0x108/0x258 [ 83.103856][ T5553] vfs_unlink+0x2e0/0x4f4 [ 83.104557][ T5553] do_unlinkat+0x328/0x618 [ 83.105218][ T5553] __arm64_sys_unlinkat+0xe0/0xfc [ 83.106006][ T5553] invoke_syscall+0x98/0x2b0 [ 83.106665][ T5553] el0_svc_common+0x138/0x258 [ 83.107461][ T5553] do_el0_svc+0x58/0x13c [ 83.108175][ T5553] el0_svc+0x78/0x1d0 [ 83.108827][ T5553] el0t_64_sync_handler+0xcc/0xe4 [ 83.109611][ T5553] el0t_64_sync+0x1a0/0x1a4 [ 83.110979][ T5553] ------------[ cut here ]------------ [ 83.111960][ T5553] WARNING: CPU: 0 PID: 5553 at fs/btrfs/inode.c:4182 __btrfs_unlink_inode+0x904/0xaec [ 83.113509][ T5553] Modules linked in: [ 83.114116][ T5553] CPU: 0 PID: 5553 Comm: syz.0.43 Tainted: G W syzkaller #0 [ 83.115573][ T5553] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/18/2026 [ 83.117291][ T5553] pstate: 62400005 (nZCv daif +PAN -UAO +TCO -DIT -SSBS BTYPE=--) [ 83.118631][ T5553] pc : __btrfs_unlink_inode+0x904/0xaec [ 83.119538][ T5553] lr : __btrfs_unlink_inode+0x904/0xaec [ 83.120435][ T5553] sp : ffff800022047a60 [ 83.121103][ T5553] x29: ffff800022047b10 x28: ffff0000db524000 x27: ffff0000e2b7e810 [ 83.122446][ T5553] x26: 0000000000000100 x25: 00000000fffffff4 x24: ffff0000d16abd10 [ 83.123762][ T5553] x23: ffff700004408f54 x22: dfff800000000000 x21: ffff0000ec41ebf0 [ 83.125140][ T5553] x20: ffff0000de904b58 x19: 1fffe0001bd2096b x18: 0000000000000001 [ 83.126458][ T5553] x17: 0000000000000000 x16: ffff80001125f448 x15: 00000000ffffffff [ 83.127720][ T5553] x14: 0000000000000001 x13: 1fffe000341f05ab x12: 0000000000ff0100 [ 83.129000][ T5553] x11: 0000000000000000 x10: 0000000000000000 x9 : ec6cdaf5287dbc00 [ 83.130272][ T5553] x8 : ec6cdaf5287dbc00 x7 : 0000000000000001 x6 : 0000000000000001 [ 83.131638][ T5553] x5 : ffff800022047378 x4 : ffff80001437f3e0 x3 : ffff800008509220 [ 83.132950][ T5553] x2 : 0000000000000001 x1 : 0000000100000000 x0 : 0000000000000026 [ 83.134294][ T5553] Call trace: [ 83.134872][ T5553] __btrfs_unlink_inode+0x904/0xaec [ 83.135710][ T5553] btrfs_unlink+0x108/0x258 [ 83.136430][ T5553] vfs_unlink+0x2e0/0x4f4 [ 83.137115][ T5553] do_unlinkat+0x328/0x618 [ 83.137881][ T5553] __arm64_sys_unlinkat+0xe0/0xfc [ 83.138711][ T5553] invoke_syscall+0x98/0x2b0 [ 83.139456][ T5553] el0_svc_common+0x138/0x258 [ 83.140248][ T5553] do_el0_svc+0x58/0x13c [ 83.140937][ T5553] el0_svc+0x78/0x1d0 [ 83.141584][ T5553] el0t_64_sync_handler+0xcc/0xe4 [ 83.142433][ T5553] el0t_64_sync+0x1a0/0x1a4 [ 83.143188][ T5553] irq event stamp: 79068 [ 83.143915][ T5553] hardirqs last enabled at (79067): [] __up_console_sem+0xb4/0xfc [ 83.145452][ T5553] hardirqs last disabled at (79068): [] el1_dbg+0x24/0x80 [ 83.146845][ T5553] softirqs last enabled at (79048): [] handle_softirqs+0xa40/0xbe4 [ 83.148351][ T5553] softirqs last disabled at (79035): [] __irq_exit_rcu+0x240/0x43c [ 83.149882][ T5553] ---[ end trace 4581dd724c861e58 ]--- [ 83.151673][ T5553] BTRFS: error (device loop0) in __btrfs_unlink_inode:4182: errno=-12 Out of memory [ 83.153027][ T5553] BTRFS info (device loop0): forced readonly [ 83.398222][ T5575] BTRFS: device fsid c9fe44da-de57-406a-8241-57ec7d4412cf devid 1 transid 8 /dev/loop0 scanned by syz.0.44 (5575) [ 83.401267][ T5575] BTRFS info (device loop0): using crc32c (crc32c-generic) checksum algorithm [ 83.402726][ T5575] BTRFS info (device loop0): using free space tree [ 83.403778][ T5575] BTRFS info (device loop0): has skinny extents [ 83.412602][ T5575] BTRFS info (device loop0): enabling ssd optimizations [ 83.417318][ T5575] FAULT_INJECTION: forcing a failure. [ 83.417318][ T5575] name failslab, interval 1, probability 0, space 0, times 0 [ 83.419483][ T5575] CPU: 0 PID: 5575 Comm: syz.0.44 Tainted: G W syzkaller #0 [ 83.420807][ T5575] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/18/2026 [ 83.422477][ T5575] Call trace: [ 83.422992][ T5575] dump_backtrace+0x0/0x458 [ 83.423726][ T5575] show_stack+0x2c/0x3c [ 83.424422][ T5575] __dump_stack+0x30/0x40 [ 83.425151][ T5575] dump_stack_lvl+0xf4/0x15c [ 83.425876][ T5575] dump_stack+0x1c/0x5c [ 83.426544][ T5575] should_fail+0x3bc/0x514 [ 83.427326][ T5575] __should_failslab+0xbc/0x10c [ 83.428110][ T5575] should_failslab+0x10/0x28 [ 83.428910][ T5575] slab_pre_alloc_hook+0x64/0xe8 [ 83.429691][ T5575] kmem_cache_alloc+0x94/0x3d4 [ 83.430520][ T5575] btrfs_alloc_path+0x5c/0x68 [ 83.431289][ T5575] __btrfs_unlink_inode+0x1dc/0xaec [ 83.432155][ T5575] btrfs_unlink+0x108/0x258 [ 83.432890][ T5575] vfs_unlink+0x2e0/0x4f4 [ 83.433591][ T5575] do_unlinkat+0x328/0x618 [ 83.434281][ T5575] __arm64_sys_unlinkat+0xe0/0xfc [ 83.435098][ T5575] invoke_syscall+0x98/0x2b0 [ 83.435887][ T5575] el0_svc_common+0x138/0x258 [ 83.436682][ T5575] do_el0_svc+0x58/0x13c [ 83.437402][ T5575] el0_svc+0x78/0x1d0 [ 83.438053][ T5575] el0t_64_sync_handler+0xcc/0xe4 [ 83.438861][ T5575] el0t_64_sync+0x1a0/0x1a4 [ 83.493772][ T4923] BTRFS: device fsid c9fe44da-de57-406a-8241-57ec7d4412cf devid 1 transid 10 /dev/loop0 scanned by udevd (4923) [ 83.696092][ T5596] BTRFS info (device loop0): using crc32c (crc32c-generic) checksum algorithm [ 83.697434][ T5596] BTRFS info (device loop0): using free space tree [ 83.698609][ T5596] BTRFS info (device loop0): has skinny extents [ 83.715002][ T5596] BTRFS info (device loop0): enabling ssd optimizations [ 83.719729][ T5596] FAULT_INJECTION: forcing a failure. [ 83.719729][ T5596] name failslab, interval 1, probability 0, space 0, times 0 [ 83.721826][ T5596] CPU: 1 PID: 5596 Comm: syz.0.45 Tainted: G W syzkaller #0 [ 83.723150][ T5596] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/18/2026 [ 83.724809][ T5596] Call trace: [ 83.725390][ T5596] dump_backtrace+0x0/0x458 [ 83.726161][ T5596] show_stack+0x2c/0x3c [ 83.726869][ T5596] __dump_stack+0x30/0x40 [ 83.727567][ T5596] dump_stack_lvl+0xf4/0x15c [ 83.728316][ T5596] dump_stack+0x1c/0x5c [ 83.729017][ T5596] should_fail+0x3bc/0x514 [ 83.729776][ T5596] __should_failslab+0xbc/0x10c [ 83.730592][ T5596] should_failslab+0x10/0x28 [ 83.731377][ T5596] slab_pre_alloc_hook+0x64/0xe8 [ 83.732146][ T5596] kmem_cache_alloc_trace+0x98/0x3ec [ 83.732938][ T5596] btrfs_delete_delayed_dir_index+0x22c/0x56c [ 83.733934][ T5596] __btrfs_unlink_inode+0x350/0xaec [ 83.734768][ T5596] btrfs_unlink+0x108/0x258 [ 83.735467][ T5596] vfs_unlink+0x2e0/0x4f4 [ 83.736200][ T5596] do_unlinkat+0x328/0x618 [ 83.736935][ T5596] __arm64_sys_unlinkat+0xe0/0xfc [ 83.737780][ T5596] invoke_syscall+0x98/0x2b0 [ 83.738535][ T5596] el0_svc_common+0x138/0x258 [ 83.739303][ T5596] do_el0_svc+0x58/0x13c [ 83.739967][ T5596] el0_svc+0x78/0x1d0 [ 83.740686][ T5596] el0t_64_sync_handler+0xcc/0xe4 [ 83.741474][ T5596] el0t_64_sync+0x1a0/0x1a4 [ 83.744410][ T5596] ------------[ cut here ]------------ [ 83.745370][ T5596] WARNING: CPU: 1 PID: 5596 at fs/btrfs/inode.c:4182 __btrfs_unlink_inode+0x904/0xaec [ 83.746864][ T5596] Modules linked in: [ 83.747498][ T5596] CPU: 1 PID: 5596 Comm: syz.0.45 Tainted: G W syzkaller #0 [ 83.748851][ T5596] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/18/2026 [ 83.750524][ T5596] pstate: 62400005 (nZCv daif +PAN -UAO +TCO -DIT -SSBS BTYPE=--) [ 83.751806][ T5596] pc : __btrfs_unlink_inode+0x904/0xaec [ 83.752686][ T5596] lr : __btrfs_unlink_inode+0x904/0xaec [ 83.753600][ T5596] sp : ffff800022047a60 [ 83.754299][ T5596] x29: ffff800022047b10 x28: ffff0000ce7f6000 x27: ffff0000e2bcb010 [ 83.755670][ T5596] x26: 0000000000000100 x25: 00000000fffffff4 x24: ffff0000db68b8f0 [ 83.757032][ T5596] x23: ffff700004408f54 x22: dfff800000000000 x21: ffff0000e28509d0 [ 83.758424][ T5596] x20: ffff0000e289b688 x19: 1fffe0001c5136d1 x18: 0000000000000001 [ 83.759767][ T5596] x17: 0000000000000000 x16: ffff80001125f448 x15: 00000000ffffffff [ 83.761145][ T5596] x14: 0000000000000001 x13: 1fffe000341f47ab x12: 0000000000ff0100 [ 83.762499][ T5596] x11: 0000000000000000 x10: 0000000000000000 x9 : 31bf70604f8c8000 [ 83.763887][ T5596] x8 : 31bf70604f8c8000 x7 : 0000000000000001 x6 : 0000000000000001 [ 83.765150][ T5596] x5 : ffff800022047378 x4 : ffff80001437f3e0 x3 : ffff800008509220 [ 83.766422][ T5596] x2 : 0000000000000001 x1 : 0000000100000000 x0 : 0000000000000026 [ 83.767788][ T5596] Call trace: [ 83.768301][ T5596] __btrfs_unlink_inode+0x904/0xaec [ 83.769199][ T5596] btrfs_unlink+0x108/0x258 [ 83.769930][ T5596] vfs_unlink+0x2e0/0x4f4 [ 83.770646][ T5596] do_unlinkat+0x328/0x618 [ 83.771360][ T5596] __arm64_sys_unlinkat+0xe0/0xfc [ 83.772209][ T5596] invoke_syscall+0x98/0x2b0 [ 83.772962][ T5596] el0_svc_common+0x138/0x258 [ 83.773693][ T5596] do_el0_svc+0x58/0x13c [ 83.774380][ T5596] el0_svc+0x78/0x1d0 [ 83.774957][ T5596] el0t_64_sync_handler+0xcc/0xe4 [ 83.775712][ T5596] el0t_64_sync+0x1a0/0x1a4 [ 83.776429][ T5596] irq event stamp: 79302 [ 83.777103][ T5596] hardirqs last enabled at (79301): [] __up_console_sem+0xb4/0xfc [ 83.778658][ T5596] hardirqs last disabled at (79302): [] el1_dbg+0x24/0x80 [ 83.779997][ T5596] softirqs last enabled at (79282): [] handle_softirqs+0xa40/0xbe4 [ 83.781424][ T5596] softirqs last disabled at (79269): [] __irq_exit_rcu+0x240/0x43c [ 83.782939][ T5596] ---[ end trace 4581dd724c861e59 ]--- [ 83.784196][ T5596] BTRFS: error (device loop0) in __btrfs_unlink_inode:4182: errno=-12 Out of memory [ 83.785583][ T5596] BTRFS info (device loop0): forced readonly [ 83.840021][ T4923] BTRFS: device fsid c9fe44da-de57-406a-8241-57ec7d4412cf devid 1 transid 8 /dev/loop0 scanned by udevd (4923) [ 83.976296][ T5619] BTRFS info (device loop0): using crc32c (crc32c-generic) checksum algorithm [ 83.977763][ T5619] BTRFS info (device loop0): using free space tree [ 83.978878][ T5619] BTRFS info (device loop0): has skinny extents [ 83.986134][ T5619] BTRFS info (device loop0): enabling ssd optimizations [ 83.990386][ T5619] FAULT_INJECTION: forcing a failure. [ 83.990386][ T5619] name failslab, interval 1, probability 0, space 0, times 0 [ 83.992704][ T5619] CPU: 1 PID: 5619 Comm: syz.0.46 Tainted: G W syzkaller #0 [ 83.994132][ T5619] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/18/2026 [ 83.995831][ T5619] Call trace: [ 83.996336][ T5619] dump_backtrace+0x0/0x458 [ 83.997121][ T5619] show_stack+0x2c/0x3c [ 83.997809][ T5619] __dump_stack+0x30/0x40 [ 83.998525][ T5619] dump_stack_lvl+0xf4/0x15c [ 83.999283][ T5619] dump_stack+0x1c/0x5c [ 83.999957][ T5619] should_fail+0x3bc/0x514 [ 84.000672][ T5619] __should_failslab+0xbc/0x10c [ 84.001489][ T5619] should_failslab+0x10/0x28 [ 84.002213][ T5619] slab_pre_alloc_hook+0x64/0xe8 [ 84.002986][ T5619] kmem_cache_alloc_trace+0x98/0x3ec [ 84.003809][ T5619] btrfs_delete_delayed_dir_index+0x22c/0x56c [ 84.004791][ T5619] __btrfs_unlink_inode+0x350/0xaec [ 84.005628][ T5619] btrfs_unlink+0x108/0x258 [ 84.006387][ T5619] vfs_unlink+0x2e0/0x4f4 [ 84.007148][ T5619] do_unlinkat+0x328/0x618 [ 84.007891][ T5619] __arm64_sys_unlinkat+0xe0/0xfc [ 84.008715][ T5619] invoke_syscall+0x98/0x2b0 [ 84.009449][ T5619] el0_svc_common+0x138/0x258 [ 84.010235][ T5619] do_el0_svc+0x58/0x13c [ 84.010915][ T5619] el0_svc+0x78/0x1d0 [ 84.011488][ T5619] el0t_64_sync_handler+0xcc/0xe4 [ 84.012285][ T5619] el0t_64_sync+0x1a0/0x1a4 [ 84.013054][ T5619] ------------[ cut here ]------------ [ 84.014291][ T5619] WARNING: CPU: 1 PID: 5619 at fs/btrfs/inode.c:4182 __btrfs_unlink_inode+0x904/0xaec [ 84.015827][ T5619] Modules linked in: [ 84.016471][ T5619] CPU: 1 PID: 5619 Comm: syz.0.46 Tainted: G W syzkaller #0 [ 84.017835][ T5619] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/18/2026 [ 84.019460][ T5619] pstate: 62400005 (nZCv daif +PAN -UAO +TCO -DIT -SSBS BTYPE=--) [ 84.020681][ T5619] pc : __btrfs_unlink_inode+0x904/0xaec [ 84.021543][ T5619] lr : __btrfs_unlink_inode+0x904/0xaec [ 84.022384][ T5619] sp : ffff800022147a60 [ 84.022965][ T5619] x29: ffff800022147b10 x28: ffff0000cffac000 x27: ffff0000e2bc9010 [ 84.024332][ T5619] x26: 0000000000000100 x25: 00000000fffffff4 x24: ffff0000d0416b00 [ 84.025690][ T5619] x23: ffff700004428f54 x22: dfff800000000000 x21: ffff0000e2853110 [ 84.026981][ T5619] x20: ffff0000e289b7e8 x19: 1fffe0001c5136fd x18: 0000000000000001 [ 84.028351][ T5619] x17: 0000000000000000 x16: ffff800008304af8 x15: 00000000ffffffff [ 84.029687][ T5619] x14: 0000000000000001 x13: 1ffff00004428e6c x12: 0000000000ff0100 [ 84.031056][ T5619] x11: 0000000000000000 x10: 0000000000000000 x9 : bde3f3fa480be400 [ 84.032341][ T5619] x8 : bde3f3fa480be400 x7 : 0000000000000001 x6 : 0000000000000001 [ 84.033696][ T5619] x5 : ffff800022147378 x4 : ffff80001437f3e0 x3 : ffff800008304c08 [ 84.034987][ T5619] x2 : 0000000000000001 x1 : 0000000100000000 x0 : 0000000000000026 [ 84.036303][ T5619] Call trace: [ 84.036810][ T5619] __btrfs_unlink_inode+0x904/0xaec [ 84.037619][ T5619] btrfs_unlink+0x108/0x258 [ 84.038360][ T5619] vfs_unlink+0x2e0/0x4f4 [ 84.039078][ T5619] do_unlinkat+0x328/0x618 [ 84.039813][ T5619] __arm64_sys_unlinkat+0xe0/0xfc [ 84.040653][ T5619] invoke_syscall+0x98/0x2b0 [ 84.041408][ T5619] el0_svc_common+0x138/0x258 [ 84.042112][ T5619] do_el0_svc+0x58/0x13c [ 84.042796][ T5619] el0_svc+0x78/0x1d0 [ 84.043415][ T5619] el0t_64_sync_handler+0xcc/0xe4 [ 84.044213][ T5619] el0t_64_sync+0x1a0/0x1a4 [ 84.044940][ T5619] irq event stamp: 78734 [ 84.045649][ T5619] hardirqs last enabled at (78733): [] __up_console_sem+0xb4/0xfc [ 84.047261][ T5619] hardirqs last disabled at (78734): [] el1_dbg+0x24/0x80 [ 84.048653][ T5619] softirqs last enabled at (78724): [] handle_softirqs+0xa40/0xbe4 [ 84.050309][ T5619] softirqs last disabled at (78713): [] __irq_exit_rcu+0x240/0x43c [ 84.051870][ T5619] ---[ end trace 4581dd724c861e5a ]--- [ 84.052832][ T5619] BTRFS: error (device loop0) in __btrfs_unlink_inode:4182: errno=-12 Out of memory [ 84.054408][ T5619] BTRFS info (device loop0): forced readonly [ 84.235080][ T5642] BTRFS: device fsid c9fe44da-de57-406a-8241-57ec7d4412cf devid 1 transid 8 /dev/loop0 scanned by syz.0.47 (5642) [ 84.299714][ T5642] BTRFS info (device loop0): using crc32c (crc32c-generic) checksum algorithm [ 84.301219][ T5642] BTRFS info (device loop0): using free space tree [ 84.302258][ T5642] BTRFS info (device loop0): has skinny extents [ 84.309645][ T5642] BTRFS info (device loop0): enabling ssd optimizations [ 84.313570][ T5642] FAULT_INJECTION: forcing a failure. [ 84.313570][ T5642] name failslab, interval 1, probability 0, space 0, times 0 [ 84.315863][ T5642] CPU: 1 PID: 5642 Comm: syz.0.47 Tainted: G W syzkaller #0 [ 84.317325][ T5642] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/18/2026 [ 84.318850][ T5642] Call trace: [ 84.319333][ T5642] dump_backtrace+0x0/0x458 [ 84.320009][ T5642] show_stack+0x2c/0x3c [ 84.320705][ T5642] __dump_stack+0x30/0x40 [ 84.321463][ T5642] dump_stack_lvl+0xf4/0x15c [ 84.322255][ T5642] dump_stack+0x1c/0x5c [ 84.322951][ T5642] should_fail+0x3bc/0x514 [ 84.323660][ T5642] __should_failslab+0xbc/0x10c [ 84.324475][ T5642] should_failslab+0x10/0x28 [ 84.325196][ T5642] slab_pre_alloc_hook+0x64/0xe8 [ 84.326000][ T5642] kmem_cache_alloc_trace+0x98/0x3ec [ 84.326868][ T5642] btrfs_delete_delayed_dir_index+0x22c/0x56c [ 84.327840][ T5642] __btrfs_unlink_inode+0x350/0xaec [ 84.328638][ T5642] btrfs_unlink+0x108/0x258 [ 84.329352][ T5642] vfs_unlink+0x2e0/0x4f4 [ 84.330038][ T5642] do_unlinkat+0x328/0x618 [ 84.330724][ T5642] __arm64_sys_unlinkat+0xe0/0xfc [ 84.331475][ T5642] invoke_syscall+0x98/0x2b0 [ 84.332293][ T5642] el0_svc_common+0x138/0x258 [ 84.333105][ T5642] do_el0_svc+0x58/0x13c [ 84.333798][ T5642] el0_svc+0x78/0x1d0 [ 84.334475][ T5642] el0t_64_sync_handler+0xcc/0xe4 [ 84.335326][ T5642] el0t_64_sync+0x1a0/0x1a4 [ 84.336280][ T5642] ------------[ cut here ]------------ [ 84.337238][ T5642] WARNING: CPU: 1 PID: 5642 at fs/btrfs/inode.c:4182 __btrfs_unlink_inode+0x904/0xaec [ 84.338729][ T5642] Modules linked in: [ 84.339364][ T5642] CPU: 1 PID: 5642 Comm: syz.0.47 Tainted: G W syzkaller #0 [ 84.340780][ T5642] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/18/2026 [ 84.342491][ T5642] pstate: 62400005 (nZCv daif +PAN -UAO +TCO -DIT -SSBS BTYPE=--) [ 84.343672][ T5642] pc : __btrfs_unlink_inode+0x904/0xaec [ 84.344574][ T5642] lr : __btrfs_unlink_inode+0x904/0xaec [ 84.345471][ T5642] sp : ffff800022147a60 [ 84.346139][ T5642] x29: ffff800022147b10 x28: ffff0000c97a6000 x27: ffff0000e2bcb410 [ 84.347431][ T5642] x26: 0000000000000100 x25: 00000000fffffff4 x24: ffff0000d4a9a790 [ 84.348720][ T5642] x23: ffff700004428f54 x22: dfff800000000000 x21: ffff0000e28544b0 [ 84.350023][ T5642] x20: ffff0000e289b948 x19: 1fffe0001c513729 x18: 0000000000000001 [ 84.351337][ T5642] x17: 0000000000000000 x16: ffff800008304af8 x15: 00000000ffffffff [ 84.352680][ T5642] x14: 0000000000000001 x13: 1ffff00004428e6c x12: 0000000000ff0100 [ 84.354051][ T5642] x11: 0000000000000000 x10: 0000000000000000 x9 : 1c0cba5348d63800 [ 84.355431][ T5642] x8 : 1c0cba5348d63800 x7 : 0000000000000001 x6 : 0000000000000001 [ 84.356777][ T5642] x5 : ffff800022147378 x4 : ffff80001437f3e0 x3 : ffff800008304c08 [ 84.358121][ T5642] x2 : 0000000000000001 x1 : 0000000100000000 x0 : 0000000000000026 [ 84.359473][ T5642] Call trace: [ 84.360036][ T5642] __btrfs_unlink_inode+0x904/0xaec [ 84.360895][ T5642] btrfs_unlink+0x108/0x258 [ 84.361630][ T5642] vfs_unlink+0x2e0/0x4f4 [ 84.362344][ T5642] do_unlinkat+0x328/0x618 [ 84.363038][ T5642] __arm64_sys_unlinkat+0xe0/0xfc [ 84.363869][ T5642] invoke_syscall+0x98/0x2b0 [ 84.364665][ T5642] el0_svc_common+0x138/0x258 [ 84.365452][ T5642] do_el0_svc+0x58/0x13c [ 84.366155][ T5642] el0_svc+0x78/0x1d0 [ 84.366816][ T5642] el0t_64_sync_handler+0xcc/0xe4 [ 84.367614][ T5642] el0t_64_sync+0x1a0/0x1a4 [ 84.368334][ T5642] irq event stamp: 79008 [ 84.369004][ T5642] hardirqs last enabled at (79007): [] __up_console_sem+0xb4/0xfc [ 84.370446][ T5642] hardirqs last disabled at (79008): [] el1_dbg+0x24/0x80 [ 84.371792][ T5642] softirqs last enabled at (78988): [] handle_softirqs+0xa40/0xbe4 [ 84.373265][ T5642] softirqs last disabled at (78943): [] __irq_exit_rcu+0x240/0x43c [ 84.374765][ T5642] ---[ end trace 4581dd724c861e5b ]--- [ 84.376092][ T5642] BTRFS: error (device loop0) in __btrfs_unlink_inode:4182: errno=-12 Out of memory [ 84.377948][ T5642] BTRFS info (device loop0): forced readonly [ 84.511571][ T5664] BTRFS: device fsid c9fe44da-de57-406a-8241-57ec7d4412cf devid 1 transid 8 /dev/loop0 scanned by syz.0.48 (5664) [ 84.516610][ T5664] BTRFS info (device loop0): using crc32c (crc32c-generic) checksum algorithm [ 84.518117][ T5664] BTRFS info (device loop0): using free space tree [ 84.519127][ T5664] BTRFS info (device loop0): has skinny extents [ 84.525906][ T5664] BTRFS info (device loop0): enabling ssd optimizations [ 84.529432][ T5664] FAULT_INJECTION: forcing a failure. [ 84.529432][ T5664] name failslab, interval 1, probability 0, space 0, times 0 [ 84.531508][ T5664] CPU: 1 PID: 5664 Comm: syz.0.48 Tainted: G W syzkaller #0 [ 84.532951][ T5664] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/18/2026 [ 84.534583][ T5664] Call trace: [ 84.535101][ T5664] dump_backtrace+0x0/0x458 [ 84.535870][ T5664] show_stack+0x2c/0x3c [ 84.536510][ T5664] __dump_stack+0x30/0x40 [ 84.537198][ T5664] dump_stack_lvl+0xf4/0x15c [ 84.537922][ T5664] dump_stack+0x1c/0x5c [ 84.538550][ T5664] should_fail+0x3bc/0x514 [ 84.539249][ T5664] __should_failslab+0xbc/0x10c [ 84.540044][ T5664] should_failslab+0x10/0x28 [ 84.540820][ T5664] slab_pre_alloc_hook+0x64/0xe8 [ 84.541638][ T5664] kmem_cache_alloc_trace+0x98/0x3ec [ 84.542538][ T5664] btrfs_delete_delayed_dir_index+0x22c/0x56c [ 84.543568][ T5664] __btrfs_unlink_inode+0x350/0xaec [ 84.544465][ T5664] btrfs_unlink+0x108/0x258 [ 84.545210][ T5664] vfs_unlink+0x2e0/0x4f4 [ 84.545931][ T5664] do_unlinkat+0x328/0x618 [ 84.546639][ T5664] __arm64_sys_unlinkat+0xe0/0xfc [ 84.547430][ T5664] invoke_syscall+0x98/0x2b0 [ 84.548189][ T5664] el0_svc_common+0x138/0x258 [ 84.548935][ T5664] do_el0_svc+0x58/0x13c [ 84.549632][ T5664] el0_svc+0x78/0x1d0 [ 84.550296][ T5664] el0t_64_sync_handler+0xcc/0xe4 [ 84.551109][ T5664] el0t_64_sync+0x1a0/0x1a4 [ 84.552654][ T5664] ------------[ cut here ]------------ [ 84.553601][ T5664] WARNING: CPU: 1 PID: 5664 at fs/btrfs/inode.c:4182 __btrfs_unlink_inode+0x904/0xaec [ 84.555087][ T5664] Modules linked in: [ 84.555754][ T5664] CPU: 1 PID: 5664 Comm: syz.0.48 Tainted: G W syzkaller #0 [ 84.557174][ T5664] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/18/2026 [ 84.558873][ T5664] pstate: 62400005 (nZCv daif +PAN -UAO +TCO -DIT -SSBS BTYPE=--) [ 84.560117][ T5664] pc : __btrfs_unlink_inode+0x904/0xaec [ 84.561009][ T5664] lr : __btrfs_unlink_inode+0x904/0xaec [ 84.561864][ T5664] sp : ffff8000223a7a60 [ 84.562563][ T5664] x29: ffff8000223a7b10 x28: ffff0000d6012000 x27: ffff0000e2bcb810 [ 84.563932][ T5664] x26: 0000000000000100 x25: 00000000fffffff4 x24: ffff0000d841ddc0 [ 84.565280][ T5664] x23: ffff700004474f54 x22: dfff800000000000 x21: ffff0000e2856bf0 [ 84.566685][ T5664] x20: ffff0000e289baa8 x19: 1fffe0001c513755 x18: 0000000000000001 [ 84.567979][ T5664] x17: 0000000000000000 x16: ffff80001125f448 x15: 00000000ffffffff [ 84.569270][ T5664] x14: 0000000000000001 x13: 1fffe000341f47ab x12: 0000000000ff0100 [ 84.570560][ T5664] x11: 0000000000000000 x10: 0000000000000000 x9 : 1704ca8ab3993300 [ 84.571926][ T5664] x8 : 1704ca8ab3993300 x7 : 0000000000000001 x6 : 0000000000000001 [ 84.573239][ T5664] x5 : ffff8000223a7378 x4 : ffff80001437f3e0 x3 : ffff800008509220 [ 84.574558][ T5664] x2 : 0000000000000001 x1 : 0000000100000000 x0 : 0000000000000026 [ 84.575922][ T5664] Call trace: [ 84.576467][ T5664] __btrfs_unlink_inode+0x904/0xaec [ 84.577342][ T5664] btrfs_unlink+0x108/0x258 [ 84.578101][ T5664] vfs_unlink+0x2e0/0x4f4 [ 84.578822][ T5664] do_unlinkat+0x328/0x618 [ 84.579555][ T5664] __arm64_sys_unlinkat+0xe0/0xfc [ 84.580412][ T5664] invoke_syscall+0x98/0x2b0 [ 84.581158][ T5664] el0_svc_common+0x138/0x258 [ 84.581968][ T5664] do_el0_svc+0x58/0x13c [ 84.582635][ T5664] el0_svc+0x78/0x1d0 [ 84.583283][ T5664] el0t_64_sync_handler+0xcc/0xe4 [ 84.584131][ T5664] el0t_64_sync+0x1a0/0x1a4 [ 84.584907][ T5664] irq event stamp: 79004 [ 84.585613][ T5664] hardirqs last enabled at (79003): [] __up_console_sem+0xb4/0xfc [ 84.587216][ T5664] hardirqs last disabled at (79004): [] el1_dbg+0x24/0x80 [ 84.588683][ T5664] softirqs last enabled at (78984): [] handle_softirqs+0xa40/0xbe4 [ 84.590282][ T5664] softirqs last disabled at (78911): [] __irq_exit_rcu+0x240/0x43c [ 84.591784][ T5664] ---[ end trace 4581dd724c861e5c ]--- [ 84.593624][ T5664] BTRFS: error (device loop0) in __btrfs_unlink_inode:4182: errno=-12 Out of memory [ 84.596085][ T5664] BTRFS info (device loop0): forced readonly [ 84.857453][ T5685] BTRFS: device fsid c9fe44da-de57-406a-8241-57ec7d4412cf devid 1 transid 8 /dev/loop0 scanned by syz.0.49 (5685) [ 84.861342][ T5685] BTRFS info (device loop0): using crc32c (crc32c-generic) checksum algorithm [ 84.862827][ T5685] BTRFS info (device loop0): using free space tree [ 84.864015][ T5685] BTRFS info (device loop0): has skinny extents [ 84.871186][ T5685] BTRFS info (device loop0): enabling ssd optimizations [ 84.875321][ T5685] FAULT_INJECTION: forcing a failure. [ 84.875321][ T5685] name failslab, interval 1, probability 0, space 0, times 0 [ 84.877260][ T5685] CPU: 0 PID: 5685 Comm: syz.0.49 Tainted: G W syzkaller #0 [ 84.878544][ T5685] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/18/2026 [ 84.880103][ T5685] Call trace: [ 84.880618][ T5685] dump_backtrace+0x0/0x458 [ 84.881293][ T5685] show_stack+0x2c/0x3c [ 84.881970][ T5685] __dump_stack+0x30/0x40 [ 84.882638][ T5685] dump_stack_lvl+0xf4/0x15c [ 84.883341][ T5685] dump_stack+0x1c/0x5c [ 84.883954][ T5685] should_fail+0x3bc/0x514 [ 84.884728][ T5685] __should_failslab+0xbc/0x10c [ 84.885538][ T5685] should_failslab+0x10/0x28 [ 84.886251][ T5685] slab_pre_alloc_hook+0x64/0xe8 [ 84.887066][ T5685] kmem_cache_alloc+0x94/0x3d4 [ 84.887817][ T5685] btrfs_alloc_path+0x5c/0x68 [ 84.888581][ T5685] __btrfs_unlink_inode+0x1dc/0xaec [ 84.889384][ T5685] btrfs_unlink+0x108/0x258 [ 84.890099][ T5685] vfs_unlink+0x2e0/0x4f4 [ 84.890767][ T5685] do_unlinkat+0x328/0x618 [ 84.891422][ T5685] __arm64_sys_unlinkat+0xe0/0xfc [ 84.892249][ T5685] invoke_syscall+0x98/0x2b0 [ 84.893015][ T5685] el0_svc_common+0x138/0x258 [ 84.893747][ T5685] do_el0_svc+0x58/0x13c [ 84.894438][ T5685] el0_svc+0x78/0x1d0 [ 84.895126][ T5685] el0t_64_sync_handler+0xcc/0xe4 [ 84.895965][ T5685] el0t_64_sync+0x1a0/0x1a4 [ 84.937475][ T4923] BTRFS: device fsid c9fe44da-de57-406a-8241-57ec7d4412cf devid 1 transid 10 /dev/loop0 scanned by udevd (4923) 1970/01/01 00:01:24 executed programs: 37 [ 85.040397][ T5707] set_capacity_and_notify: 8 callbacks suppressed [ 85.040406][ T5707] loop0: detected capacity change from 0 to 32768