[ 54.105956][ T9] bridge0: port 1(bridge_slave_0) entered disabled state [ 54.244681][ T9] device veth1_macvtap left promiscuous mode [ 54.245534][ T9] device veth0_macvtap left promiscuous mode [ 54.246343][ T9] device veth1_vlan left promiscuous mode [ 54.247086][ T9] device veth0_vlan left promiscuous mode [ 54.333508][ T9] team0 (unregistering): Port device team_slave_1 removed [ 54.337731][ T9] team0 (unregistering): Port device team_slave_0 removed [ 54.341261][ T9] bond0 (unregistering): (slave bond_slave_1): Releasing backup interface [ 54.368941][ T9] bond0 (unregistering): (slave bond_slave_0): Releasing backup interface [ 54.478224][ T9] bond0 (unregistering): Released all slaves Warning: Permanently added '10.128.1.82' (ED25519) to the list of known hosts. 1970/01/01 00:01:03 ignoring optional flag "type"="gce" 1970/01/01 00:01:04 parsed 1 programs [ 65.355824][ T4424] Adding 124996k swap on ./swap-file. Priority:0 extents:1 across:124996k SSFS [ 68.639649][ T9] wlan0: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 68.640900][ T9] wlan0: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 68.646571][ T356] IPv6: ADDRCONF(NETDEV_CHANGE): wlan0: link becomes ready [ 68.649679][ T356] wlan1: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 68.650931][ T356] wlan1: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 68.652139][ T356] IPv6: ADDRCONF(NETDEV_CHANGE): wlan1: link becomes ready [ 68.803587][ T4550] chnl_net:caif_netlink_parms(): no params data found [ 68.820120][ T4550] bridge0: port 1(bridge_slave_0) entered blocking state [ 68.821377][ T4550] bridge0: port 1(bridge_slave_0) entered disabled state [ 68.822809][ T4550] device bridge_slave_0 entered promiscuous mode [ 68.824863][ T4550] bridge0: port 2(bridge_slave_1) entered blocking state [ 68.825972][ T4550] bridge0: port 2(bridge_slave_1) entered disabled state [ 68.827577][ T4550] device bridge_slave_1 entered promiscuous mode [ 68.836074][ T4550] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 68.838486][ T4550] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 68.847493][ T4550] team0: Port device team_slave_0 added [ 68.850039][ T4550] team0: Port device team_slave_1 added [ 68.856456][ T4550] batman_adv: batadv0: Adding interface: batadv_slave_0 [ 68.857606][ T4550] 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. [ 68.861677][ T4550] batman_adv: batadv0: Not using interface batadv_slave_0 (retrying later): interface not active [ 68.863975][ T4550] batman_adv: batadv0: Adding interface: batadv_slave_1 [ 68.865319][ T4550] 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. [ 68.869369][ T4550] batman_adv: batadv0: Not using interface batadv_slave_1 (retrying later): interface not active [ 68.926018][ T4550] device hsr_slave_0 entered promiscuous mode [ 68.965233][ T4550] device hsr_slave_1 entered promiscuous mode [ 69.559743][ T4550] netdevsim netdevsim0 netdevsim0: renamed from eth0 [ 69.586282][ T4550] netdevsim netdevsim0 netdevsim1: renamed from eth1 [ 69.616342][ T7] cfg80211: failed to load regulatory.db [ 69.617720][ T2064] ieee802154 phy0 wpan0: encryption failed: -22 [ 69.618759][ T2064] ieee802154 phy1 wpan1: encryption failed: -22 [ 69.626180][ T4550] netdevsim netdevsim0 netdevsim2: renamed from eth2 [ 69.667201][ T4550] netdevsim netdevsim0 netdevsim3: renamed from eth3 [ 69.803227][ T4550] 8021q: adding VLAN 0 to HW filter on device bond0 [ 69.817442][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): veth1: link becomes ready [ 69.818852][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 69.821714][ T4550] 8021q: adding VLAN 0 to HW filter on device team0 [ 69.824282][ T148] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bridge: link becomes ready [ 69.826552][ T148] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 69.827985][ T148] bridge0: port 1(bridge_slave_0) entered blocking state [ 69.829078][ T148] bridge0: port 1(bridge_slave_0) entered forwarding state [ 69.830965][ T148] IPv6: ADDRCONF(NETDEV_CHANGE): bridge0: link becomes ready [ 69.834743][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bridge: link becomes ready [ 69.836294][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 69.837792][ T9] bridge0: port 2(bridge_slave_1) entered blocking state [ 69.838947][ T9] bridge0: port 2(bridge_slave_1) entered forwarding state [ 69.846054][ T148] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bond: link becomes ready [ 69.848278][ T148] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bond: link becomes ready [ 69.860271][ T4550] hsr0: Slave A (hsr_slave_0) is not up; please bring it up to get a fully working HSR network [ 69.861861][ T4550] hsr0: Slave B (hsr_slave_1) is not up; please bring it up to get a fully working HSR network [ 69.866536][ T356] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_team: link becomes ready [ 69.868363][ T356] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 69.870327][ T356] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_team: link becomes ready [ 69.872029][ T356] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 69.873564][ T356] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_hsr: link becomes ready [ 69.875851][ T356] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 69.877392][ T356] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_hsr: link becomes ready [ 69.878998][ T356] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 69.881914][ T356] IPv6: ADDRCONF(NETDEV_CHANGE): team0: link becomes ready [ 69.883464][ T356] IPv6: ADDRCONF(NETDEV_CHANGE): hsr0: link becomes ready [ 69.959260][ T4550] 8021q: adding VLAN 0 to HW filter on device batadv0 [ 69.965773][ T136] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan1: link becomes ready [ 69.967013][ T136] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan0: link becomes ready [ 69.968256][ T136] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_virt_wifi: link becomes ready [ 69.970826][ T136] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_virt_wifi: link becomes ready [ 69.978996][ T4650] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_vlan: link becomes ready [ 69.980533][ T4650] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_vlan: link becomes ready [ 69.982250][ T4650] IPv6: ADDRCONF(NETDEV_CHANGE): vlan0: link becomes ready [ 69.983575][ T4650] IPv6: ADDRCONF(NETDEV_CHANGE): vlan1: link becomes ready [ 70.001319][ T4550] device veth0_vlan entered promiscuous mode [ 70.006291][ T4550] device veth1_vlan entered promiscuous mode [ 70.022658][ T4650] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan0: link becomes ready [ 70.024243][ T4650] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan1: link becomes ready [ 70.027022][ T4650] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_macvtap: link becomes ready [ 70.028705][ T4650] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_macvtap: link becomes ready [ 70.033535][ T4550] device veth0_macvtap entered promiscuous mode [ 70.037198][ T4550] device veth1_macvtap entered promiscuous mode [ 70.055457][ T4550] batman_adv: batadv0: Interface activated: batadv_slave_0 [ 70.057953][ T4550] batman_adv: batadv0: Interface activated: batadv_slave_1 [ 70.059077][ T4650] IPv6: ADDRCONF(NETDEV_CHANGE): macvtap0: link becomes ready [ 70.060789][ T4650] IPv6: ADDRCONF(NETDEV_CHANGE): macsec0: link becomes ready [ 70.062252][ T4650] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_0: link becomes ready [ 70.063675][ T4650] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_batadv: link becomes ready [ 70.071490][ T4650] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_1: link becomes ready [ 70.072970][ T4650] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_batadv: link becomes ready [ 70.077696][ T4550] netdevsim netdevsim0 netdevsim0: set [1, 0] type 2 family 0 port 6081 - 0 [ 70.079041][ T4550] netdevsim netdevsim0 netdevsim1: set [1, 0] type 2 family 0 port 6081 - 0 [ 70.080323][ T4550] netdevsim netdevsim0 netdevsim2: set [1, 0] type 2 family 0 port 6081 - 0 [ 70.081563][ T4550] netdevsim netdevsim0 netdevsim3: set [1, 0] type 2 family 0 port 6081 - 0 [ 70.449145][ T537] netdevsim netdevsim0 netdevsim3 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 1970/01/01 00:01:10 executed programs: 0 [ 71.006298][ T4786] chnl_net:caif_netlink_parms(): no params data found [ 71.023852][ T4786] bridge0: port 1(bridge_slave_0) entered blocking state [ 71.025724][ T4786] bridge0: port 1(bridge_slave_0) entered disabled state [ 71.027227][ T4786] device bridge_slave_0 entered promiscuous mode [ 71.029392][ T4786] bridge0: port 2(bridge_slave_1) entered blocking state [ 71.030600][ T4786] bridge0: port 2(bridge_slave_1) entered disabled state [ 71.032040][ T4786] device bridge_slave_1 entered promiscuous mode [ 71.040419][ T4786] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 71.043101][ T4786] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 71.051993][ T4786] team0: Port device team_slave_0 added [ 71.053802][ T4786] team0: Port device team_slave_1 added [ 71.061673][ T4786] batman_adv: batadv0: Adding interface: batadv_slave_0 [ 71.062725][ T4786] 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. [ 71.066850][ T4786] batman_adv: batadv0: Not using interface batadv_slave_0 (retrying later): interface not active [ 71.069215][ T4786] batman_adv: batadv0: Adding interface: batadv_slave_1 [ 71.070293][ T4786] 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. [ 71.074070][ T4786] batman_adv: batadv0: Not using interface batadv_slave_1 (retrying later): interface not active [ 71.126275][ T4786] device hsr_slave_0 entered promiscuous mode [ 71.165559][ T4786] device hsr_slave_1 entered promiscuous mode [ 71.205329][ T4786] debugfs: Directory 'hsr0' with parent 'hsr' already present! [ 71.206570][ T4786] Cannot create hsr debugfs directory [ 72.974780][ T4065] Bluetooth: hci0: command 0x0409 tx timeout [ 73.677790][ T537] netdevsim netdevsim0 netdevsim2 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 75.054606][ T13] Bluetooth: hci0: command 0x041b tx timeout [ 76.037375][ T537] netdevsim netdevsim0 netdevsim1 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 76.088265][ T537] netdevsim netdevsim0 netdevsim0 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 77.027565][ T4786] netdevsim netdevsim0 netdevsim0: renamed from eth0 [ 77.063370][ T4786] netdevsim netdevsim0 netdevsim1: renamed from eth1 [ 77.125725][ T4786] netdevsim netdevsim0 netdevsim2: renamed from eth2 [ 77.144687][ T4184] Bluetooth: hci0: command 0x040f tx timeout [ 77.165948][ T4786] netdevsim netdevsim0 netdevsim3: renamed from eth3 [ 77.235387][ T4786] 8021q: adding VLAN 0 to HW filter on device bond0 [ 77.239165][ T136] IPv6: ADDRCONF(NETDEV_CHANGE): veth1: link becomes ready [ 77.240621][ T136] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 77.243247][ T4786] 8021q: adding VLAN 0 to HW filter on device team0 [ 77.249299][ T148] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bridge: link becomes ready [ 77.250876][ T148] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 77.252364][ T148] bridge0: port 1(bridge_slave_0) entered blocking state [ 77.253468][ T148] bridge0: port 1(bridge_slave_0) entered forwarding state [ 77.255335][ T148] IPv6: ADDRCONF(NETDEV_CHANGE): bridge0: link becomes ready [ 77.258725][ T148] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bridge: link becomes ready [ 77.260302][ T148] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 77.262016][ T148] bridge0: port 2(bridge_slave_1) entered blocking state [ 77.263228][ T148] bridge0: port 2(bridge_slave_1) entered forwarding state [ 77.266393][ T148] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bond: link becomes ready [ 77.269282][ T148] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bond: link becomes ready [ 77.272753][ T148] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_team: link becomes ready [ 77.276507][ T148] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 77.283336][ T148] IPv6: ADDRCONF(NETDEV_CHANGE): team0: link becomes ready [ 77.286756][ T148] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_team: link becomes ready [ 77.288416][ T148] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 77.291217][ T148] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_hsr: link becomes ready [ 77.292785][ T148] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 77.297526][ T4650] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_hsr: link becomes ready [ 77.299179][ T4650] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 77.301661][ T4786] IPv6: ADDRCONF(NETDEV_CHANGE): hsr0: link becomes ready [ 77.339684][ T148] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan1: link becomes ready [ 77.340962][ T148] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan0: link becomes ready [ 77.344077][ T4786] 8021q: adding VLAN 0 to HW filter on device batadv0 [ 77.351154][ T148] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_virt_wifi: link becomes ready [ 77.352855][ T148] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_virt_wifi: link becomes ready [ 77.360119][ T148] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_vlan: link becomes ready [ 77.361673][ T148] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_vlan: link becomes ready [ 77.363124][ T148] IPv6: ADDRCONF(NETDEV_CHANGE): vlan0: link becomes ready [ 77.364738][ T148] IPv6: ADDRCONF(NETDEV_CHANGE): vlan1: link becomes ready [ 77.367355][ T4786] device veth0_vlan entered promiscuous mode [ 77.370816][ T4786] device veth1_vlan entered promiscuous mode [ 77.378387][ T148] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan0: link becomes ready [ 77.379998][ T148] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan1: link becomes ready [ 77.381492][ T148] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_macvtap: link becomes ready [ 77.382989][ T148] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_macvtap: link becomes ready [ 77.385644][ T4786] device veth0_macvtap entered promiscuous mode [ 77.388712][ T4786] device veth1_macvtap entered promiscuous mode [ 77.393399][ T4786] batman_adv: The newly added mac address (aa:aa:aa:aa:aa:3e) already exists on: batadv_slave_0 [ 77.395471][ T4786] batman_adv: It is strongly recommended to keep mac addresses unique to avoid problems! [ 77.397639][ T4786] batman_adv: batadv0: Interface activated: batadv_slave_0 [ 77.398902][ T148] IPv6: ADDRCONF(NETDEV_CHANGE): macvtap0: link becomes ready [ 77.400523][ T148] IPv6: ADDRCONF(NETDEV_CHANGE): macsec0: link becomes ready [ 77.401988][ T148] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_0: link becomes ready [ 77.403468][ T148] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_batadv: link becomes ready [ 77.406239][ T4786] batman_adv: The newly added mac address (aa:aa:aa:aa:aa:3f) already exists on: batadv_slave_1 [ 77.407946][ T4786] batman_adv: It is strongly recommended to keep mac addresses unique to avoid problems! [ 77.409976][ T4786] batman_adv: batadv0: Interface activated: batadv_slave_1 [ 77.411751][ T148] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_1: link becomes ready [ 77.413421][ T148] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_batadv: link becomes ready [ 77.423708][ T4786] netdevsim netdevsim0 netdevsim0: set [1, 0] type 2 family 0 port 6081 - 0 [ 77.425374][ T4786] netdevsim netdevsim0 netdevsim1: set [1, 0] type 2 family 0 port 6081 - 0 [ 77.426704][ T4786] netdevsim netdevsim0 netdevsim2: set [1, 0] type 2 family 0 port 6081 - 0 [ 77.427990][ T4786] netdevsim netdevsim0 netdevsim3: set [1, 0] type 2 family 0 port 6081 - 0 [ 77.449373][ T148] wlan0: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 77.451287][ T148] wlan0: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 77.453141][ T4650] IPv6: ADDRCONF(NETDEV_CHANGE): wlan0: link becomes ready [ 77.459887][ T4650] wlan1: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 77.461155][ T4650] wlan1: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 77.462626][ T136] IPv6: ADDRCONF(NETDEV_CHANGE): wlan1: link becomes ready 1970/01/01 00:01:17 executed programs: 2 [ 77.579281][ T5002] loop0: detected capacity change from 0 to 32768 [ 77.632244][ T5002] BTRFS: device fsid c9fe44da-de57-406a-8241-57ec7d4412cf devid 1 transid 8 /dev/loop0 scanned by syz.0.15 (5002) [ 77.639385][ T5002] BTRFS info (device loop0): using crc32c (crc32c-generic) checksum algorithm [ 77.640764][ T5002] BTRFS info (device loop0): using free space tree [ 77.641737][ T5002] BTRFS info (device loop0): has skinny extents [ 77.654139][ T5002] BTRFS info (device loop0): enabling ssd optimizations [ 77.663040][ T5002] FAULT_INJECTION: forcing a failure. [ 77.663040][ T5002] name failslab, interval 1, probability 0, space 0, times 1 [ 77.666901][ T5002] CPU: 1 PID: 5002 Comm: syz.0.15 Not tainted syzkaller #0 [ 77.667927][ T5002] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/03/2025 [ 77.669315][ T5002] Call trace: [ 77.669778][ T5002] dump_backtrace+0x0/0x458 [ 77.670463][ T5002] show_stack+0x2c/0x3c [ 77.671005][ T5002] __dump_stack+0x30/0x40 [ 77.671695][ T5002] dump_stack_lvl+0xf4/0x15c [ 77.672326][ T5002] dump_stack+0x1c/0x5c [ 77.673018][ T5002] should_fail+0x3bc/0x514 [ 77.673684][ T5002] __should_failslab+0xbc/0x10c [ 77.674387][ T5002] should_failslab+0x10/0x28 [ 77.675081][ T5002] slab_pre_alloc_hook+0x64/0xe8 [ 77.675816][ T5002] kmem_cache_alloc_trace+0x98/0x3ec [ 77.676638][ T5002] btrfs_delete_delayed_dir_index+0x22c/0x56c [ 77.677553][ T5002] __btrfs_unlink_inode+0x350/0xaec [ 77.678307][ T5002] btrfs_unlink+0x108/0x258 [ 77.678989][ T5002] vfs_unlink+0x2e0/0x4f4 [ 77.679660][ T5002] do_unlinkat+0x328/0x618 [ 77.680335][ T5002] __arm64_sys_unlinkat+0xe0/0xfc [ 77.681058][ T5002] invoke_syscall+0x98/0x2b0 [ 77.681735][ T5002] el0_svc_common+0x138/0x258 [ 77.682462][ T5002] do_el0_svc+0x58/0x13c [ 77.683113][ T5002] el0_svc+0x78/0x1d0 [ 77.683669][ T5002] el0t_64_sync_handler+0xcc/0xe4 [ 77.684419][ T5002] el0t_64_sync+0x1a0/0x1a4 [ 77.687437][ T5002] ------------[ cut here ]------------ [ 77.688420][ T5002] WARNING: CPU: 1 PID: 5002 at fs/btrfs/inode.c:4182 __btrfs_unlink_inode+0x904/0xaec [ 77.689730][ T5002] Modules linked in: [ 77.690336][ T5002] CPU: 1 PID: 5002 Comm: syz.0.15 Not tainted syzkaller #0 [ 77.691509][ T5002] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/03/2025 [ 77.693038][ T5002] pstate: 62400005 (nZCv daif +PAN -UAO +TCO -DIT -SSBS BTYPE=--) [ 77.694229][ T5002] pc : __btrfs_unlink_inode+0x904/0xaec [ 77.695040][ T5002] lr : __btrfs_unlink_inode+0x904/0xaec [ 77.695942][ T5002] sp : ffff80001fc17a60 [ 77.696576][ T5002] x29: ffff80001fc17b10 x28: ffff0000db71a000 x27: ffff0000e8d98010 [ 77.697836][ T5002] x26: 0000000000000100 x25: 00000000fffffff4 x24: ffff0000c92a3f20 [ 77.699028][ T5002] x23: ffff700003f82f54 x22: dfff800000000000 x21: ffff0000e8db93a0 [ 77.700215][ T5002] x20: ffff0000de6a5108 x19: 1fffe0001bcd4a21 x18: 0000000000000001 [ 77.701376][ T5002] x17: 0000000000000000 x16: ffff800011254fd8 x15: 00000000ffffffff [ 77.702551][ T5002] x14: 0000000000000001 x13: 1fffe000341f49ab x12: 0000000000ff0100 [ 77.703724][ T5002] x11: 0000000000000000 x10: 0000000000000000 x9 : 270bd6981dd5fc00 [ 77.704880][ T5002] x8 : 270bd6981dd5fc00 x7 : 0000000000000001 x6 : 0000000000000001 [ 77.706065][ T5002] x5 : ffff80001fc17378 x4 : ffff80001436f3e0 x3 : ffff800008508fa8 [ 77.707345][ T5002] x2 : 0000000000000001 x1 : 0000000100000000 x0 : 0000000000000026 [ 77.708560][ T5002] Call trace: [ 77.709016][ T5002] __btrfs_unlink_inode+0x904/0xaec [ 77.709723][ T5002] btrfs_unlink+0x108/0x258 [ 77.710440][ T5002] vfs_unlink+0x2e0/0x4f4 [ 77.711088][ T5002] do_unlinkat+0x328/0x618 [ 77.711696][ T5002] __arm64_sys_unlinkat+0xe0/0xfc [ 77.712471][ T5002] invoke_syscall+0x98/0x2b0 [ 77.713156][ T5002] el0_svc_common+0x138/0x258 [ 77.713835][ T5002] do_el0_svc+0x58/0x13c [ 77.714485][ T5002] el0_svc+0x78/0x1d0 [ 77.715056][ T5002] el0t_64_sync_handler+0xcc/0xe4 [ 77.715791][ T5002] el0t_64_sync+0x1a0/0x1a4 [ 77.716511][ T5002] irq event stamp: 81544 [ 77.717174][ T5002] hardirqs last enabled at (81543): [] __up_console_sem+0xb4/0xfc [ 77.718616][ T5002] hardirqs last disabled at (81544): [] el1_dbg+0x24/0x80 [ 77.719926][ T5002] softirqs last enabled at (81524): [] handle_softirqs+0xa40/0xbe4 [ 77.721392][ T5002] softirqs last disabled at (81485): [] __irq_exit_rcu+0x240/0x43c [ 77.722674][ T5002] ---[ end trace ec21c05403b012b1 ]--- [ 77.724390][ T5002] BTRFS: error (device loop0) in __btrfs_unlink_inode:4182: errno=-12 Out of memory [ 77.726149][ T5002] BTRFS info (device loop0): forced readonly [ 77.900502][ T5031] loop0: detected capacity change from 0 to 32768 [ 77.947587][ T5031] BTRFS: device fsid c9fe44da-de57-406a-8241-57ec7d4412cf devid 1 transid 8 /dev/loop0 scanned by syz.0.16 (5031) [ 77.951414][ T5031] BTRFS info (device loop0): using crc32c (crc32c-generic) checksum algorithm [ 77.952851][ T5031] BTRFS info (device loop0): using free space tree [ 77.953805][ T5031] BTRFS info (device loop0): has skinny extents [ 77.961762][ T5031] BTRFS info (device loop0): enabling ssd optimizations [ 77.971726][ T5031] FAULT_INJECTION: forcing a failure. [ 77.971726][ T5031] name failslab, interval 1, probability 0, space 0, times 0 [ 77.973835][ T5031] CPU: 1 PID: 5031 Comm: syz.0.16 Tainted: G W syzkaller #0 [ 77.975253][ T5031] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/03/2025 [ 77.976792][ T5031] Call trace: [ 77.977276][ T5031] dump_backtrace+0x0/0x458 [ 77.977921][ T5031] show_stack+0x2c/0x3c [ 77.978544][ T5031] __dump_stack+0x30/0x40 [ 77.979216][ T5031] dump_stack_lvl+0xf4/0x15c [ 77.979894][ T5031] dump_stack+0x1c/0x5c [ 77.980494][ T5031] should_fail+0x3bc/0x514 [ 77.981162][ T5031] __should_failslab+0xbc/0x10c [ 77.981883][ T5031] should_failslab+0x10/0x28 [ 77.982588][ T5031] slab_pre_alloc_hook+0x64/0xe8 [ 77.983323][ T5031] kmem_cache_alloc+0x94/0x3d4 [ 77.983982][ T5031] btrfs_alloc_path+0x5c/0x68 [ 77.984691][ T5031] __btrfs_unlink_inode+0x1dc/0xaec [ 77.985450][ T5031] btrfs_unlink+0x108/0x258 [ 77.986131][ T5031] vfs_unlink+0x2e0/0x4f4 [ 77.986726][ T5031] do_unlinkat+0x328/0x618 [ 77.987337][ T5031] __arm64_sys_unlinkat+0xe0/0xfc [ 77.988139][ T5031] invoke_syscall+0x98/0x2b0 [ 77.988826][ T5031] el0_svc_common+0x138/0x258 [ 77.989543][ T5031] do_el0_svc+0x58/0x13c [ 77.990173][ T5031] el0_svc+0x78/0x1d0 [ 77.990721][ T5031] el0t_64_sync_handler+0xcc/0xe4 [ 77.991553][ T5031] el0t_64_sync+0x1a0/0x1a4 [ 78.138097][ T5053] loop0: detected capacity change from 0 to 32768 [ 78.185999][ T5053] BTRFS: device fsid c9fe44da-de57-406a-8241-57ec7d4412cf devid 1 transid 8 /dev/loop0 scanned by syz.0.17 (5053) [ 78.227940][ T5053] BTRFS info (device loop0): using crc32c (crc32c-generic) checksum algorithm [ 78.229365][ T5053] BTRFS info (device loop0): using free space tree [ 78.230368][ T5053] BTRFS info (device loop0): has skinny extents [ 78.248735][ T5053] BTRFS info (device loop0): enabling ssd optimizations [ 78.253147][ T5053] FAULT_INJECTION: forcing a failure. [ 78.253147][ T5053] name failslab, interval 1, probability 0, space 0, times 0 [ 78.257588][ T5053] CPU: 0 PID: 5053 Comm: syz.0.17 Tainted: G W syzkaller #0 [ 78.259042][ T5053] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/03/2025 [ 78.260478][ T5053] Call trace: [ 78.260931][ T5053] dump_backtrace+0x0/0x458 [ 78.261610][ T5053] show_stack+0x2c/0x3c [ 78.262244][ T5053] __dump_stack+0x30/0x40 [ 78.262933][ T5053] dump_stack_lvl+0xf4/0x15c [ 78.263615][ T5053] dump_stack+0x1c/0x5c [ 78.264238][ T5053] should_fail+0x3bc/0x514 [ 78.264876][ T5053] __should_failslab+0xbc/0x10c [ 78.265604][ T5053] should_failslab+0x10/0x28 [ 78.266281][ T5053] slab_pre_alloc_hook+0x64/0xe8 [ 78.267026][ T5053] kmem_cache_alloc_trace+0x98/0x3ec [ 78.267779][ T5053] btrfs_delete_delayed_dir_index+0x22c/0x56c [ 78.268665][ T5053] __btrfs_unlink_inode+0x350/0xaec [ 78.269359][ T5053] btrfs_unlink+0x108/0x258 [ 78.270045][ T5053] vfs_unlink+0x2e0/0x4f4 [ 78.270617][ T5053] do_unlinkat+0x328/0x618 [ 78.271244][ T5053] __arm64_sys_unlinkat+0xe0/0xfc [ 78.271981][ T5053] invoke_syscall+0x98/0x2b0 [ 78.272619][ T5053] el0_svc_common+0x138/0x258 [ 78.273241][ T5053] do_el0_svc+0x58/0x13c [ 78.273871][ T5053] el0_svc+0x78/0x1d0 [ 78.274457][ T5053] el0t_64_sync_handler+0xcc/0xe4 [ 78.275152][ T5053] el0t_64_sync+0x1a0/0x1a4 [ 78.279530][ T5053] ------------[ cut here ]------------ [ 78.280529][ T5053] WARNING: CPU: 1 PID: 5053 at fs/btrfs/inode.c:4182 __btrfs_unlink_inode+0x904/0xaec [ 78.281981][ T5053] Modules linked in: [ 78.282554][ T5053] CPU: 1 PID: 5053 Comm: syz.0.17 Tainted: G W syzkaller #0 [ 78.283810][ T5053] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/03/2025 [ 78.285311][ T5053] pstate: 62400005 (nZCv daif +PAN -UAO +TCO -DIT -SSBS BTYPE=--) [ 78.286508][ T5053] pc : __btrfs_unlink_inode+0x904/0xaec [ 78.287335][ T5053] lr : __btrfs_unlink_inode+0x904/0xaec [ 78.288177][ T5053] sp : ffff80001fef7a60 [ 78.288759][ T5053] x29: ffff80001fef7b10 x28: ffff0000c10b2000 x27: ffff0000de700010 [ 78.289941][ T5053] x26: 0000000000000100 x25: 00000000fffffff4 x24: ffff0000e7f95420 [ 78.291235][ T5053] x23: ffff700003fdef54 x22: dfff800000000000 x21: ffff0000e26413a0 [ 78.292374][ T5053] x20: ffff0000de7bf108 x19: 1fffe0001bcf7e21 x18: 0000000000000001 [ 78.293587][ T5053] x17: 0000000000000000 x16: ffff800011254fd8 x15: 00000000ffffffff [ 78.294775][ T5053] x14: 0000000000000001 x13: 1fffe000341f49ab x12: 0000000000ff0100 [ 78.296031][ T5053] x11: 0000000000000000 x10: 0000000000000000 x9 : 8217aae3a72b3e00 [ 78.297246][ T5053] x8 : 8217aae3a72b3e00 x7 : 0000000000000001 x6 : 0000000000000001 [ 78.298409][ T5053] x5 : ffff80001fef7378 x4 : ffff80001436f3e0 x3 : ffff800008508fa8 [ 78.299596][ T5053] x2 : 0000000000000001 x1 : 0000000100000000 x0 : 0000000000000026 [ 78.300759][ T5053] Call trace: [ 78.301259][ T5053] __btrfs_unlink_inode+0x904/0xaec [ 78.302039][ T5053] btrfs_unlink+0x108/0x258 [ 78.302687][ T5053] vfs_unlink+0x2e0/0x4f4 [ 78.303292][ T5053] do_unlinkat+0x328/0x618 [ 78.303955][ T5053] __arm64_sys_unlinkat+0xe0/0xfc [ 78.304628][ T5053] invoke_syscall+0x98/0x2b0 [ 78.305298][ T5053] el0_svc_common+0x138/0x258 [ 78.305927][ T5053] do_el0_svc+0x58/0x13c [ 78.306578][ T5053] el0_svc+0x78/0x1d0 [ 78.307144][ T5053] el0t_64_sync_handler+0xcc/0xe4 [ 78.307829][ T5053] el0t_64_sync+0x1a0/0x1a4 [ 78.308491][ T5053] irq event stamp: 79876 [ 78.308989][ T5053] hardirqs last enabled at (79875): [] __up_console_sem+0xb4/0xfc [ 78.310280][ T5053] hardirqs last disabled at (79876): [] el1_dbg+0x24/0x80 [ 78.311644][ T5053] softirqs last enabled at (79856): [] handle_softirqs+0xa40/0xbe4 [ 78.313072][ T5053] softirqs last disabled at (79815): [] __irq_exit_rcu+0x240/0x43c [ 78.314463][ T5053] ---[ end trace ec21c05403b012b2 ]--- [ 78.318362][ T5053] BTRFS: error (device loop0) in __btrfs_unlink_inode:4182: errno=-12 Out of memory [ 78.319833][ T5053] BTRFS info (device loop0): forced readonly [ 78.492777][ T5075] loop0: detected capacity change from 0 to 32768 [ 78.541046][ T5075] BTRFS: device fsid c9fe44da-de57-406a-8241-57ec7d4412cf devid 1 transid 8 /dev/loop0 scanned by syz.0.18 (5075) [ 78.544637][ T5075] BTRFS info (device loop0): using crc32c (crc32c-generic) checksum algorithm [ 78.546106][ T5075] BTRFS info (device loop0): using free space tree [ 78.547057][ T5075] BTRFS info (device loop0): has skinny extents [ 78.556284][ T5075] BTRFS info (device loop0): enabling ssd optimizations [ 78.560260][ T5075] FAULT_INJECTION: forcing a failure. [ 78.560260][ T5075] name failslab, interval 1, probability 0, space 0, times 0 [ 78.562276][ T5075] CPU: 1 PID: 5075 Comm: syz.0.18 Tainted: G W syzkaller #0 [ 78.563597][ T5075] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/03/2025 [ 78.565100][ T5075] Call trace: [ 78.565625][ T5075] dump_backtrace+0x0/0x458 [ 78.566261][ T5075] show_stack+0x2c/0x3c [ 78.566924][ T5075] __dump_stack+0x30/0x40 [ 78.567612][ T5075] dump_stack_lvl+0xf4/0x15c [ 78.568325][ T5075] dump_stack+0x1c/0x5c [ 78.568938][ T5075] should_fail+0x3bc/0x514 [ 78.569613][ T5075] __should_failslab+0xbc/0x10c [ 78.570319][ T5075] should_failslab+0x10/0x28 [ 78.571008][ T5075] slab_pre_alloc_hook+0x64/0xe8 [ 78.571746][ T5075] kmem_cache_alloc+0x94/0x3d4 [ 78.572435][ T5075] btrfs_alloc_path+0x5c/0x68 [ 78.573130][ T5075] __btrfs_unlink_inode+0x1dc/0xaec [ 78.573878][ T5075] btrfs_unlink+0x108/0x258 [ 78.574546][ T5075] vfs_unlink+0x2e0/0x4f4 [ 78.575163][ T5075] do_unlinkat+0x328/0x618 [ 78.575830][ T5075] __arm64_sys_unlinkat+0xe0/0xfc [ 78.576541][ T5075] invoke_syscall+0x98/0x2b0 [ 78.577268][ T5075] el0_svc_common+0x138/0x258 [ 78.577954][ T5075] do_el0_svc+0x58/0x13c [ 78.578574][ T5075] el0_svc+0x78/0x1d0 [ 78.579198][ T5075] el0t_64_sync_handler+0xcc/0xe4 [ 78.579970][ T5075] el0t_64_sync+0x1a0/0x1a4 [ 78.592884][ T537] device hsr_slave_0 left promiscuous mode [ 78.626136][ T537] device hsr_slave_1 left promiscuous mode [ 78.631479][ T4958] BTRFS: device fsid c9fe44da-de57-406a-8241-57ec7d4412cf devid 1 transid 10 /dev/loop0 scanned by udevd (4958) [ 78.724675][ T537] batman_adv: batadv0: Interface deactivated: batadv_slave_0 [ 78.725890][ T537] batman_adv: batadv0: Removing interface: batadv_slave_0 [ 78.727635][ T537] batman_adv: batadv0: Interface deactivated: batadv_slave_1 [ 78.728730][ T537] batman_adv: batadv0: Removing interface: batadv_slave_1 [ 78.730580][ T537] device bridge_slave_1 left promiscuous mode [ 78.731597][ T537] bridge0: port 2(bridge_slave_1) entered disabled state [ 78.737477][ T5096] loop0: detected capacity change from 0 to 32768 [ 78.765156][ T537] device bridge_slave_0 left promiscuous mode [ 78.766249][ T537] bridge0: port 1(bridge_slave_0) entered disabled state [ 78.825815][ T5096] BTRFS info (device loop0): using crc32c (crc32c-generic) checksum algorithm [ 78.827264][ T5096] BTRFS info (device loop0): using free space tree [ 78.828286][ T5096] BTRFS info (device loop0): has skinny extents [ 78.840505][ T5096] BTRFS info (device loop0): enabling ssd optimizations [ 78.845691][ T5096] FAULT_INJECTION: forcing a failure. [ 78.845691][ T5096] name failslab, interval 1, probability 0, space 0, times 0 [ 78.847657][ T5096] CPU: 0 PID: 5096 Comm: syz.0.19 Tainted: G W syzkaller #0 [ 78.848887][ T5096] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/03/2025 [ 78.850432][ T5096] Call trace: [ 78.850908][ T5096] dump_backtrace+0x0/0x458 [ 78.851521][ T5096] show_stack+0x2c/0x3c [ 78.852093][ T5096] __dump_stack+0x30/0x40 [ 78.852708][ T5096] dump_stack_lvl+0xf4/0x15c [ 78.853370][ T5096] dump_stack+0x1c/0x5c [ 78.853979][ T5096] should_fail+0x3bc/0x514 [ 78.854582][ T5096] __should_failslab+0xbc/0x10c [ 78.855224][ T5096] should_failslab+0x10/0x28 [ 78.855866][ T5096] slab_pre_alloc_hook+0x64/0xe8 [ 78.856536][ T5096] kmem_cache_alloc_trace+0x98/0x3ec [ 78.857282][ T5096] btrfs_delete_delayed_dir_index+0x22c/0x56c [ 78.858185][ T5096] __btrfs_unlink_inode+0x350/0xaec [ 78.858914][ T5096] btrfs_unlink+0x108/0x258 [ 78.859577][ T5096] vfs_unlink+0x2e0/0x4f4 [ 78.860172][ T5096] do_unlinkat+0x328/0x618 [ 78.860775][ T5096] __arm64_sys_unlinkat+0xe0/0xfc [ 78.861455][ T5096] invoke_syscall+0x98/0x2b0 [ 78.862113][ T5096] el0_svc_common+0x138/0x258 [ 78.862791][ T5096] do_el0_svc+0x58/0x13c [ 78.863403][ T5096] el0_svc+0x78/0x1d0 [ 78.863999][ T5096] el0t_64_sync_handler+0xcc/0xe4 [ 78.864735][ T5096] el0t_64_sync+0x1a0/0x1a4 [ 78.867267][ T5096] ------------[ cut here ]------------ [ 78.868194][ T5096] WARNING: CPU: 0 PID: 5096 at fs/btrfs/inode.c:4182 __btrfs_unlink_inode+0x904/0xaec [ 78.869532][ T5096] Modules linked in: [ 78.870080][ T5096] CPU: 0 PID: 5096 Comm: syz.0.19 Tainted: G W syzkaller #0 [ 78.871256][ T5096] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/03/2025 [ 78.872671][ T5096] pstate: 62400005 (nZCv daif +PAN -UAO +TCO -DIT -SSBS BTYPE=--) [ 78.873774][ T5096] pc : __btrfs_unlink_inode+0x904/0xaec [ 78.874562][ T5096] lr : __btrfs_unlink_inode+0x904/0xaec [ 78.875387][ T5096] sp : ffff800020127a60 [ 78.876033][ T5096] x29: ffff800020127b10 x28: ffff0000cd7d2000 x27: ffff0000de700410 [ 78.877200][ T5096] x26: 0000000000000100 x25: 00000000fffffff4 x24: ffff0000cb357f20 [ 78.878408][ T5096] x23: ffff700004024f54 x22: dfff800000000000 x21: ffff0000e2643ae0 [ 78.879536][ T5096] x20: ffff0000de7bf268 x19: 1fffe0001bcf7e4d x18: 0000000000000001 [ 78.880647][ T5096] x17: 0000000000000000 x16: ffff800011254fd8 x15: 00000000ffffffff [ 78.881854][ T5096] x14: 0000000000000001 x13: 1fffe000341f07ab x12: 0000000000ff0100 [ 78.883036][ T5096] x11: 0000000000000000 x10: 0000000000000000 x9 : 070ae124626fe100 [ 78.884213][ T5096] x8 : 070ae124626fe100 x7 : 0000000000000001 x6 : 0000000000000001 [ 78.885448][ T5096] x5 : ffff800020127378 x4 : ffff80001436f3e0 x3 : ffff800008508fa8 [ 78.886633][ T5096] x2 : 0000000000000001 x1 : 0000000100000000 x0 : 0000000000000026 [ 78.887806][ T5096] Call trace: [ 78.888290][ T5096] __btrfs_unlink_inode+0x904/0xaec [ 78.889087][ T5096] btrfs_unlink+0x108/0x258 [ 78.889792][ T5096] vfs_unlink+0x2e0/0x4f4 [ 78.890437][ T5096] do_unlinkat+0x328/0x618 [ 78.891051][ T5096] __arm64_sys_unlinkat+0xe0/0xfc [ 78.891792][ T5096] invoke_syscall+0x98/0x2b0 [ 78.892443][ T5096] el0_svc_common+0x138/0x258 [ 78.893138][ T5096] do_el0_svc+0x58/0x13c [ 78.893737][ T5096] el0_svc+0x78/0x1d0 [ 78.894353][ T5096] el0t_64_sync_handler+0xcc/0xe4 [ 78.895056][ T5096] el0t_64_sync+0x1a0/0x1a4 [ 78.895717][ T5096] irq event stamp: 79112 [ 78.896307][ T5096] hardirqs last enabled at (79111): [] __up_console_sem+0xb4/0xfc [ 78.897688][ T5096] hardirqs last disabled at (79112): [] el1_dbg+0x24/0x80 [ 78.898896][ T5096] softirqs last enabled at (79092): [] handle_softirqs+0xa40/0xbe4 [ 78.900286][ T5096] softirqs last disabled at (78989): [] __irq_exit_rcu+0x240/0x43c [ 78.901657][ T5096] ---[ end trace ec21c05403b012b3 ]--- [ 78.904358][ T5096] BTRFS: error (device loop0) in __btrfs_unlink_inode:4182: errno=-12 Out of memory [ 78.905886][ T5096] BTRFS info (device loop0): forced readonly [ 78.924738][ T537] device veth1_macvtap left promiscuous mode [ 78.925781][ T537] device veth0_macvtap left promiscuous mode [ 78.926780][ T537] device veth1_vlan left promiscuous mode [ 78.927863][ T537] device veth0_vlan left promiscuous mode [ 79.050737][ T5119] loop0: detected capacity change from 0 to 32768 [ 79.085940][ T5119] BTRFS: device fsid c9fe44da-de57-406a-8241-57ec7d4412cf devid 1 transid 8 /dev/loop0 scanned by syz.0.20 (5119) [ 79.098762][ T537] team0 (unregistering): Port device team_slave_1 removed [ 79.103625][ T537] team0 (unregistering): Port device team_slave_0 removed [ 79.107709][ T537] bond0 (unregistering): (slave bond_slave_1): Releasing backup interface [ 79.128100][ T5119] BTRFS info (device loop0): using crc32c (crc32c-generic) checksum algorithm [ 79.129435][ T5119] BTRFS info (device loop0): using free space tree [ 79.130408][ T5119] BTRFS info (device loop0): has skinny extents [ 79.138313][ T537] bond0 (unregistering): (slave bond_slave_0): Releasing backup interface [ 79.148493][ T5119] BTRFS info (device loop0): enabling ssd optimizations [ 79.153417][ T5119] FAULT_INJECTION: forcing a failure. [ 79.153417][ T5119] name failslab, interval 1, probability 0, space 0, times 0 [ 79.155605][ T5119] CPU: 1 PID: 5119 Comm: syz.0.20 Tainted: G W syzkaller #0 [ 79.156894][ T5119] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/03/2025 [ 79.158355][ T5119] Call trace: [ 79.158829][ T5119] dump_backtrace+0x0/0x458 [ 79.159479][ T5119] show_stack+0x2c/0x3c [ 79.160098][ T5119] __dump_stack+0x30/0x40 [ 79.160732][ T5119] dump_stack_lvl+0xf4/0x15c [ 79.161441][ T5119] dump_stack+0x1c/0x5c [ 79.162028][ T5119] should_fail+0x3bc/0x514 [ 79.162673][ T5119] __should_failslab+0xbc/0x10c [ 79.163380][ T5119] should_failslab+0x10/0x28 [ 79.164016][ T5119] slab_pre_alloc_hook+0x64/0xe8 [ 79.164709][ T5119] kmem_cache_alloc_trace+0x98/0x3ec [ 79.165522][ T5119] btrfs_delete_delayed_dir_index+0x22c/0x56c [ 79.166439][ T5119] __btrfs_unlink_inode+0x350/0xaec [ 79.167254][ T5119] btrfs_unlink+0x108/0x258 [ 79.168036][ T5119] vfs_unlink+0x2e0/0x4f4 [ 79.168740][ T5119] do_unlinkat+0x328/0x618 [ 79.169375][ T5119] __arm64_sys_unlinkat+0xe0/0xfc [ 79.170164][ T5119] invoke_syscall+0x98/0x2b0 [ 79.170860][ T5119] el0_svc_common+0x138/0x258 [ 79.171563][ T5119] do_el0_svc+0x58/0x13c [ 79.172272][ T5119] el0_svc+0x78/0x1d0 [ 79.172924][ T5119] el0t_64_sync_handler+0xcc/0xe4 [ 79.173724][ T5119] el0t_64_sync+0x1a0/0x1a4 [ 79.177613][ T5119] ------------[ cut here ]------------ [ 79.178577][ T5119] WARNING: CPU: 1 PID: 5119 at fs/btrfs/inode.c:4182 __btrfs_unlink_inode+0x904/0xaec [ 79.180063][ T5119] Modules linked in: [ 79.180695][ T5119] CPU: 1 PID: 5119 Comm: syz.0.20 Tainted: G W syzkaller #0 [ 79.182119][ T5119] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/03/2025 [ 79.183619][ T5119] pstate: 62400005 (nZCv daif +PAN -UAO +TCO -DIT -SSBS BTYPE=--) [ 79.184867][ T5119] pc : __btrfs_unlink_inode+0x904/0xaec [ 79.185739][ T5119] lr : __btrfs_unlink_inode+0x904/0xaec [ 79.186582][ T5119] sp : ffff800020247a60 [ 79.187268][ T5119] x29: ffff800020247b10 x28: ffff0000eecda000 x27: ffff0000e8d98c10 [ 79.188552][ T5119] x26: 0000000000000100 x25: 00000000fffffff4 x24: ffff0000d2ca7c60 [ 79.189747][ T5119] x23: ffff700004048f54 x22: dfff800000000000 x21: ffff0000e8de0000 [ 79.190980][ T5119] x20: ffff0000de6a57e8 x19: 1fffe0001bcd4afd x18: 0000000000000001 [ 79.192211][ T5119] x17: 0000000000000000 x16: ffff800011254fd8 x15: 00000000ffffffff [ 79.193483][ T5119] x14: 0000000000000001 x13: 1fffe000341f49ab x12: 0000000000ff0100 [ 79.194619][ T5119] x11: 0000000000000000 x10: 0000000000000000 x9 : 0d4c0104e6665a00 [ 79.195791][ T5119] x8 : 0d4c0104e6665a00 x7 : 0000000000000001 x6 : 0000000000000001 [ 79.196954][ T5119] x5 : ffff800020247378 x4 : ffff80001436f3e0 x3 : ffff800008508fa8 [ 79.198137][ T5119] x2 : 0000000000000001 x1 : 0000000100000000 x0 : 0000000000000026 [ 79.199279][ T5119] Call trace: [ 79.199733][ T5119] __btrfs_unlink_inode+0x904/0xaec [ 79.200466][ T5119] btrfs_unlink+0x108/0x258 [ 79.201147][ T5119] vfs_unlink+0x2e0/0x4f4 [ 79.201795][ T5119] do_unlinkat+0x328/0x618 [ 79.202447][ T5119] __arm64_sys_unlinkat+0xe0/0xfc [ 79.203238][ T5119] invoke_syscall+0x98/0x2b0 [ 79.203907][ T5119] el0_svc_common+0x138/0x258 [ 79.204617][ T5119] do_el0_svc+0x58/0x13c [ 79.205227][ T5119] el0_svc+0x78/0x1d0 [ 79.205791][ T5119] el0t_64_sync_handler+0xcc/0xe4 [ 79.206554][ T5119] el0t_64_sync+0x1a0/0x1a4 [ 79.207203][ T5119] irq event stamp: 78882 [ 79.207798][ T5119] hardirqs last enabled at (78881): [] __up_console_sem+0xb4/0xfc [ 79.209170][ T5119] hardirqs last disabled at (78882): [] el1_dbg+0x24/0x80 [ 79.210602][ T5119] softirqs last enabled at (78862): [] handle_softirqs+0xa40/0xbe4 [ 79.212157][ T5119] softirqs last disabled at (78825): [] __irq_exit_rcu+0x240/0x43c [ 79.213685][ T5119] ---[ end trace ec21c05403b012b4 ]--- [ 79.215732][ T4967] Bluetooth: hci0: command 0x0419 tx timeout [ 79.216778][ T5119] BTRFS: error (device loop0) in __btrfs_unlink_inode:4182: errno=-12 Out of memory [ 79.218136][ T5119] BTRFS info (device loop0): forced readonly [ 79.239484][ T537] bond0 (unregistering): Released all slaves [ 79.360130][ T5141] loop0: detected capacity change from 0 to 32768 [ 79.416550][ T5141] BTRFS: device fsid c9fe44da-de57-406a-8241-57ec7d4412cf devid 1 transid 8 /dev/loop0 scanned by syz.0.21 (5141) [ 79.477054][ T5141] BTRFS info (device loop0): using crc32c (crc32c-generic) checksum algorithm [ 79.478505][ T5141] BTRFS info (device loop0): using free space tree [ 79.479557][ T5141] BTRFS info (device loop0): has skinny extents [ 79.489272][ T5141] BTRFS info (device loop0): enabling ssd optimizations [ 79.493942][ T5141] FAULT_INJECTION: forcing a failure. [ 79.493942][ T5141] name failslab, interval 1, probability 0, space 0, times 0 [ 79.496218][ T5141] CPU: 0 PID: 5141 Comm: syz.0.21 Tainted: G W syzkaller #0 [ 79.497536][ T5141] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/03/2025 [ 79.499127][ T5141] Call trace: [ 79.499619][ T5141] dump_backtrace+0x0/0x458 [ 79.500260][ T5141] show_stack+0x2c/0x3c [ 79.500858][ T5141] __dump_stack+0x30/0x40 [ 79.501498][ T5141] dump_stack_lvl+0xf4/0x15c [ 79.502178][ T5141] dump_stack+0x1c/0x5c [ 79.502801][ T5141] should_fail+0x3bc/0x514 [ 79.503490][ T5141] __should_failslab+0xbc/0x10c [ 79.504213][ T5141] should_failslab+0x10/0x28 [ 79.504890][ T5141] slab_pre_alloc_hook+0x64/0xe8 [ 79.505601][ T5141] kmem_cache_alloc+0x94/0x3d4 [ 79.506266][ T5141] btrfs_alloc_path+0x5c/0x68 [ 79.506944][ T5141] __btrfs_unlink_inode+0x1dc/0xaec [ 79.507714][ T5141] btrfs_unlink+0x108/0x258 [ 79.508377][ T5141] vfs_unlink+0x2e0/0x4f4 [ 79.509036][ T5141] do_unlinkat+0x328/0x618 [ 79.509688][ T5141] __arm64_sys_unlinkat+0xe0/0xfc [ 79.510353][ T5141] invoke_syscall+0x98/0x2b0 [ 79.511001][ T5141] el0_svc_common+0x138/0x258 [ 79.511655][ T5141] do_el0_svc+0x58/0x13c [ 79.512277][ T5141] el0_svc+0x78/0x1d0 [ 79.512820][ T5141] el0t_64_sync_handler+0xcc/0xe4 [ 79.513562][ T5141] el0t_64_sync+0x1a0/0x1a4 [ 79.581561][ T4958] BTRFS: device fsid c9fe44da-de57-406a-8241-57ec7d4412cf devid 1 transid 10 /dev/loop0 scanned by udevd (4958) [ 79.665052][ T5162] loop0: detected capacity change from 0 to 32768 [ 79.718702][ T5162] BTRFS info (device loop0): using crc32c (crc32c-generic) checksum algorithm [ 79.720156][ T5162] BTRFS info (device loop0): using free space tree [ 79.721155][ T5162] BTRFS info (device loop0): has skinny extents [ 79.728991][ T5162] BTRFS info (device loop0): enabling ssd optimizations [ 79.732721][ T5162] FAULT_INJECTION: forcing a failure. [ 79.732721][ T5162] name failslab, interval 1, probability 0, space 0, times 0 [ 79.736163][ T5162] CPU: 1 PID: 5162 Comm: syz.0.22 Tainted: G W syzkaller #0 [ 79.737432][ T5162] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/03/2025 [ 79.738804][ T5162] Call trace: [ 79.739282][ T5162] dump_backtrace+0x0/0x458 [ 79.739919][ T5162] show_stack+0x2c/0x3c [ 79.740569][ T5162] __dump_stack+0x30/0x40 [ 79.741160][ T5162] dump_stack_lvl+0xf4/0x15c [ 79.741870][ T5162] dump_stack+0x1c/0x5c [ 79.742442][ T5162] should_fail+0x3bc/0x514 [ 79.743074][ T5162] __should_failslab+0xbc/0x10c [ 79.743759][ T5162] should_failslab+0x10/0x28 [ 79.744409][ T5162] slab_pre_alloc_hook+0x64/0xe8 [ 79.745156][ T5162] kmem_cache_alloc_trace+0x98/0x3ec [ 79.745959][ T5162] btrfs_delete_delayed_dir_index+0x22c/0x56c [ 79.746869][ T5162] __btrfs_unlink_inode+0x350/0xaec [ 79.747588][ T5162] btrfs_unlink+0x108/0x258 [ 79.748260][ T5162] vfs_unlink+0x2e0/0x4f4 [ 79.748883][ T5162] do_unlinkat+0x328/0x618 [ 79.749524][ T5162] __arm64_sys_unlinkat+0xe0/0xfc [ 79.750247][ T5162] invoke_syscall+0x98/0x2b0 [ 79.750910][ T5162] el0_svc_common+0x138/0x258 [ 79.751575][ T5162] do_el0_svc+0x58/0x13c [ 79.752205][ T5162] el0_svc+0x78/0x1d0 [ 79.752747][ T5162] el0t_64_sync_handler+0xcc/0xe4 [ 79.753488][ T5162] el0t_64_sync+0x1a0/0x1a4 [ 79.754456][ T5162] ------------[ cut here ]------------ [ 79.756786][ T5162] WARNING: CPU: 1 PID: 5162 at fs/btrfs/inode.c:4182 __btrfs_unlink_inode+0x904/0xaec [ 79.758289][ T5162] Modules linked in: [ 79.758880][ T5162] CPU: 1 PID: 5162 Comm: syz.0.22 Tainted: G W syzkaller #0 [ 79.760131][ T5162] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/03/2025 [ 79.761626][ T5162] pstate: 62400005 (nZCv daif +PAN -UAO +TCO -DIT -SSBS BTYPE=--) [ 79.762837][ T5162] pc : __btrfs_unlink_inode+0x904/0xaec [ 79.763577][ T5162] lr : __btrfs_unlink_inode+0x904/0xaec [ 79.764416][ T5162] sp : ffff800020637a60 [ 79.765020][ T5162] x29: ffff800020637b10 x28: ffff0000ebb34000 x27: ffff0000e8d99010 [ 79.766270][ T5162] x26: 0000000000000100 x25: 00000000fffffff4 x24: ffff0000eb97af20 [ 79.767475][ T5162] x23: ffff7000040c6f54 x22: dfff800000000000 x21: ffff0000e8de3ae0 [ 79.768724][ T5162] x20: ffff0000de6a5aa8 x19: 1fffe0001bcd4b55 x18: 0000000000000001 [ 79.769926][ T5162] x17: 0000000000000000 x16: ffff800011254fd8 x15: 00000000ffffffff [ 79.771177][ T5162] x14: 0000000000000001 x13: 1fffe000341f49ab x12: 0000000000ff0100 [ 79.772335][ T5162] x11: 0000000000000000 x10: 0000000000000000 x9 : 816330340a078100 [ 79.773579][ T5162] x8 : 816330340a078100 x7 : 0000000000000001 x6 : 0000000000000001 [ 79.774811][ T5162] x5 : ffff800020637378 x4 : ffff80001436f3e0 x3 : ffff800008508fa8 [ 79.775982][ T5162] x2 : 0000000000000001 x1 : 0000000100000000 x0 : 0000000000000026 [ 79.777173][ T5162] Call trace: [ 79.777637][ T5162] __btrfs_unlink_inode+0x904/0xaec [ 79.778402][ T5162] btrfs_unlink+0x108/0x258 [ 79.779048][ T5162] vfs_unlink+0x2e0/0x4f4 [ 79.779710][ T5162] do_unlinkat+0x328/0x618 [ 79.780381][ T5162] __arm64_sys_unlinkat+0xe0/0xfc [ 79.781141][ T5162] invoke_syscall+0x98/0x2b0 [ 79.781802][ T5162] el0_svc_common+0x138/0x258 [ 79.782490][ T5162] do_el0_svc+0x58/0x13c [ 79.783144][ T5162] el0_svc+0x78/0x1d0 [ 79.783727][ T5162] el0t_64_sync_handler+0xcc/0xe4 [ 79.784422][ T5162] el0t_64_sync+0x1a0/0x1a4 [ 79.785048][ T5162] irq event stamp: 78932 [ 79.785685][ T5162] hardirqs last enabled at (78931): [] __up_console_sem+0xb4/0xfc [ 79.787140][ T5162] hardirqs last disabled at (78932): [] el1_dbg+0x24/0x80 [ 79.788383][ T5162] softirqs last enabled at (78920): [] handle_softirqs+0xa40/0xbe4 [ 79.789834][ T5162] softirqs last disabled at (78897): [] __irq_exit_rcu+0x240/0x43c [ 79.791161][ T5162] ---[ end trace ec21c05403b012b5 ]--- [ 79.792402][ T5162] BTRFS: error (device loop0) in __btrfs_unlink_inode:4182: errno=-12 Out of memory [ 79.793902][ T5162] BTRFS info (device loop0): forced readonly [ 79.955591][ T5186] loop0: detected capacity change from 0 to 32768 [ 79.995802][ T5186] BTRFS: device fsid c9fe44da-de57-406a-8241-57ec7d4412cf devid 1 transid 8 /dev/loop0 scanned by syz.0.23 (5186) [ 80.038244][ T5186] BTRFS info (device loop0): using crc32c (crc32c-generic) checksum algorithm [ 80.039776][ T5186] BTRFS info (device loop0): using free space tree [ 80.040742][ T5186] BTRFS info (device loop0): has skinny extents [ 80.054245][ T5186] BTRFS info (device loop0): enabling ssd optimizations [ 80.066249][ T5186] FAULT_INJECTION: forcing a failure. [ 80.066249][ T5186] name failslab, interval 1, probability 0, space 0, times 0 [ 80.068336][ T5186] CPU: 1 PID: 5186 Comm: syz.0.23 Tainted: G W syzkaller #0 [ 80.069714][ T5186] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/03/2025 [ 80.071180][ T5186] Call trace: [ 80.071671][ T5186] dump_backtrace+0x0/0x458 [ 80.072327][ T5186] show_stack+0x2c/0x3c [ 80.072941][ T5186] __dump_stack+0x30/0x40 [ 80.073579][ T5186] dump_stack_lvl+0xf4/0x15c [ 80.074262][ T5186] dump_stack+0x1c/0x5c [ 80.074914][ T5186] should_fail+0x3bc/0x514 [ 80.075548][ T5186] __should_failslab+0xbc/0x10c [ 80.076356][ T5186] should_failslab+0x10/0x28 [ 80.077089][ T5186] slab_pre_alloc_hook+0x64/0xe8 [ 80.077843][ T5186] kmem_cache_alloc+0x94/0x3d4 [ 80.078572][ T5186] btrfs_alloc_path+0x5c/0x68 [ 80.079290][ T5186] __btrfs_unlink_inode+0x1dc/0xaec [ 80.080107][ T5186] btrfs_unlink+0x108/0x258 [ 80.080745][ T5186] vfs_unlink+0x2e0/0x4f4 [ 80.081453][ T5186] do_unlinkat+0x328/0x618 [ 80.082107][ T5186] __arm64_sys_unlinkat+0xe0/0xfc [ 80.082844][ T5186] invoke_syscall+0x98/0x2b0 [ 80.083554][ T5186] el0_svc_common+0x138/0x258 [ 80.084248][ T5186] do_el0_svc+0x58/0x13c [ 80.084900][ T5186] el0_svc+0x78/0x1d0 [ 80.085518][ T5186] el0t_64_sync_handler+0xcc/0xe4 [ 80.086285][ T5186] el0t_64_sync+0x1a0/0x1a4 [ 80.229173][ T5208] loop0: detected capacity change from 0 to 32768 [ 80.305436][ T5208] BTRFS: device fsid c9fe44da-de57-406a-8241-57ec7d4412cf devid 1 transid 8 /dev/loop0 scanned by syz.0.24 (5208) [ 80.347102][ T5208] BTRFS info (device loop0): using crc32c (crc32c-generic) checksum algorithm [ 80.348660][ T5208] BTRFS info (device loop0): using free space tree [ 80.349668][ T5208] BTRFS info (device loop0): has skinny extents [ 80.357388][ T5208] BTRFS info (device loop0): enabling ssd optimizations [ 80.365486][ T5208] FAULT_INJECTION: forcing a failure. [ 80.365486][ T5208] name failslab, interval 1, probability 0, space 0, times 0 [ 80.367449][ T5208] CPU: 0 PID: 5208 Comm: syz.0.24 Tainted: G W syzkaller #0 [ 80.368626][ T5208] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/03/2025 [ 80.370050][ T5208] Call trace: [ 80.370523][ T5208] dump_backtrace+0x0/0x458 [ 80.371086][ T5208] show_stack+0x2c/0x3c [ 80.371689][ T5208] __dump_stack+0x30/0x40 [ 80.372284][ T5208] dump_stack_lvl+0xf4/0x15c [ 80.372938][ T5208] dump_stack+0x1c/0x5c [ 80.373553][ T5208] should_fail+0x3bc/0x514 [ 80.374193][ T5208] __should_failslab+0xbc/0x10c [ 80.374892][ T5208] should_failslab+0x10/0x28 [ 80.375526][ T5208] slab_pre_alloc_hook+0x64/0xe8 [ 80.376220][ T5208] kmem_cache_alloc_trace+0x98/0x3ec [ 80.377011][ T5208] btrfs_delete_delayed_dir_index+0x22c/0x56c [ 80.377916][ T5208] __btrfs_unlink_inode+0x350/0xaec [ 80.378652][ T5208] btrfs_unlink+0x108/0x258 [ 80.379318][ T5208] vfs_unlink+0x2e0/0x4f4 [ 80.379902][ T5208] do_unlinkat+0x328/0x618 [ 80.380537][ T5208] __arm64_sys_unlinkat+0xe0/0xfc [ 80.381232][ T5208] invoke_syscall+0x98/0x2b0 [ 80.381865][ T5208] el0_svc_common+0x138/0x258 [ 80.382508][ T5208] do_el0_svc+0x58/0x13c [ 80.383097][ T5208] el0_svc+0x78/0x1d0 [ 80.383678][ T5208] el0t_64_sync_handler+0xcc/0xe4 [ 80.384343][ T5208] el0t_64_sync+0x1a0/0x1a4 [ 80.386124][ T5208] ------------[ cut here ]------------ [ 80.387118][ T5208] WARNING: CPU: 0 PID: 5208 at fs/btrfs/inode.c:4182 __btrfs_unlink_inode+0x904/0xaec [ 80.388579][ T5208] Modules linked in: [ 80.389247][ T5208] CPU: 0 PID: 5208 Comm: syz.0.24 Tainted: G W syzkaller #0 [ 80.390520][ T5208] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/03/2025 [ 80.391980][ T5208] pstate: 62400005 (nZCv daif +PAN -UAO +TCO -DIT -SSBS BTYPE=--) [ 80.393039][ T5208] pc : __btrfs_unlink_inode+0x904/0xaec [ 80.393780][ T5208] lr : __btrfs_unlink_inode+0x904/0xaec [ 80.394578][ T5208] sp : ffff8000209c7a60 [ 80.395152][ T5208] x29: ffff8000209c7b10 x28: ffff0000d616e000 x27: ffff0000de700c10 [ 80.396293][ T5208] x26: 0000000000000100 x25: 00000000fffffff4 x24: ffff0000eefaf2c0 [ 80.397434][ T5208] x23: ffff700004138f54 x22: dfff800000000000 x21: ffff0000e8e193a0 [ 80.398598][ T5208] x20: ffff0000de7bf528 x19: 1fffe0001bcf7ea5 x18: 0000000000000001 [ 80.399775][ T5208] x17: 0000000000000000 x16: ffff800011254fd8 x15: 00000000ffffffff [ 80.400921][ T5208] x14: 0000000000000001 x13: 1fffe000341f07ab x12: 0000000000ff0100 [ 80.402052][ T5208] x11: 0000000000000000 x10: 0000000000000000 x9 : 4ca069af75693900 [ 80.403241][ T5208] x8 : 4ca069af75693900 x7 : 0000000000000001 x6 : 0000000000000001 [ 80.404463][ T5208] x5 : ffff8000209c7378 x4 : ffff80001436f3e0 x3 : ffff800008508fa8 [ 80.405583][ T5208] x2 : 0000000000000001 x1 : 0000000100000000 x0 : 0000000000000026 [ 80.406753][ T5208] Call trace: [ 80.407262][ T5208] __btrfs_unlink_inode+0x904/0xaec [ 80.408008][ T5208] btrfs_unlink+0x108/0x258 [ 80.408629][ T5208] vfs_unlink+0x2e0/0x4f4 [ 80.409289][ T5208] do_unlinkat+0x328/0x618 [ 80.409905][ T5208] __arm64_sys_unlinkat+0xe0/0xfc [ 80.410599][ T5208] invoke_syscall+0x98/0x2b0 [ 80.411253][ T5208] el0_svc_common+0x138/0x258 [ 80.411917][ T5208] do_el0_svc+0x58/0x13c [ 80.412547][ T5208] el0_svc+0x78/0x1d0 [ 80.413142][ T5208] el0t_64_sync_handler+0xcc/0xe4 [ 80.413840][ T5208] el0t_64_sync+0x1a0/0x1a4 [ 80.414445][ T5208] irq event stamp: 78886 [ 80.415051][ T5208] hardirqs last enabled at (78885): [] __up_console_sem+0xb4/0xfc [ 80.416413][ T5208] hardirqs last disabled at (78886): [] el1_dbg+0x24/0x80 [ 80.417731][ T5208] softirqs last enabled at (78866): [] handle_softirqs+0xa40/0xbe4 [ 80.419211][ T5208] softirqs last disabled at (78845): [] __irq_exit_rcu+0x240/0x43c [ 80.420602][ T5208] ---[ end trace ec21c05403b012b6 ]--- [ 80.422603][ T5208] BTRFS: error (device loop0) in __btrfs_unlink_inode:4182: errno=-12 Out of memory [ 80.424069][ T5208] BTRFS info (device loop0): forced readonly [ 80.670071][ T5231] BTRFS: device fsid c9fe44da-de57-406a-8241-57ec7d4412cf devid 1 transid 8 /dev/loop0 scanned by syz.0.25 (5231) [ 80.674055][ T5231] BTRFS info (device loop0): using crc32c (crc32c-generic) checksum algorithm [ 80.675731][ T5231] BTRFS info (device loop0): using free space tree [ 80.676805][ T5231] BTRFS info (device loop0): has skinny extents [ 80.705357][ T5231] BTRFS info (device loop0): enabling ssd optimizations [ 80.709465][ T5231] FAULT_INJECTION: forcing a failure. [ 80.709465][ T5231] name failslab, interval 1, probability 0, space 0, times 0 [ 80.711386][ T5231] CPU: 0 PID: 5231 Comm: syz.0.25 Tainted: G W syzkaller #0 [ 80.712629][ T5231] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/03/2025 [ 80.714072][ T5231] Call trace: [ 80.714517][ T5231] dump_backtrace+0x0/0x458 [ 80.715162][ T5231] show_stack+0x2c/0x3c [ 80.715786][ T5231] __dump_stack+0x30/0x40 [ 80.716392][ T5231] dump_stack_lvl+0xf4/0x15c [ 80.717074][ T5231] dump_stack+0x1c/0x5c [ 80.717664][ T5231] should_fail+0x3bc/0x514 [ 80.718346][ T5231] __should_failslab+0xbc/0x10c [ 80.719079][ T5231] should_failslab+0x10/0x28 [ 80.719766][ T5231] slab_pre_alloc_hook+0x64/0xe8 [ 80.720419][ T5231] kmem_cache_alloc_trace+0x98/0x3ec [ 80.721188][ T5231] btrfs_delete_delayed_dir_index+0x22c/0x56c [ 80.722061][ T5231] __btrfs_unlink_inode+0x350/0xaec [ 80.722772][ T5231] btrfs_unlink+0x108/0x258 [ 80.723454][ T5231] vfs_unlink+0x2e0/0x4f4 [ 80.724090][ T5231] do_unlinkat+0x328/0x618 [ 80.724695][ T5231] __arm64_sys_unlinkat+0xe0/0xfc [ 80.725430][ T5231] invoke_syscall+0x98/0x2b0 [ 80.726100][ T5231] el0_svc_common+0x138/0x258 [ 80.726789][ T5231] do_el0_svc+0x58/0x13c [ 80.727378][ T5231] el0_svc+0x78/0x1d0 [ 80.727968][ T5231] el0t_64_sync_handler+0xcc/0xe4 [ 80.728708][ T5231] el0t_64_sync+0x1a0/0x1a4 [ 80.754824][ T5231] ------------[ cut here ]------------ [ 80.755817][ T5231] WARNING: CPU: 0 PID: 5231 at fs/btrfs/inode.c:4182 __btrfs_unlink_inode+0x904/0xaec [ 80.757175][ T5231] Modules linked in: [ 80.757709][ T5231] CPU: 0 PID: 5231 Comm: syz.0.25 Tainted: G W syzkaller #0 [ 80.758945][ T5231] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/03/2025 [ 80.760511][ T5231] pstate: 62400005 (nZCv daif +PAN -UAO +TCO -DIT -SSBS BTYPE=--) [ 80.761662][ T5231] pc : __btrfs_unlink_inode+0x904/0xaec [ 80.762512][ T5231] lr : __btrfs_unlink_inode+0x904/0xaec [ 80.763258][ T5231] sp : ffff800020b97a60 [ 80.763809][ T5231] x29: ffff800020b97b10 x28: ffff0000dab24000 x27: ffff0000de701010 [ 80.764979][ T5231] x26: 0000000000000100 x25: 00000000fffffff4 x24: ffff0000d079d840 [ 80.766193][ T5231] x23: ffff700004172f54 x22: dfff800000000000 x21: ffff0000e8e1b110 [ 80.767336][ T5231] x20: ffff0000de7bf688 x19: 1fffe0001bcf7ed1 x18: 0000000000000001 [ 80.768554][ T5231] x17: 0000000000000000 x16: ffff800011254fd8 x15: 00000000ffffffff [ 80.769766][ T5231] x14: 0000000000000001 x13: 1fffe000341f07ab x12: 0000000000ff0100 [ 80.770928][ T5231] x11: 0000000000000000 x10: 0000000000000000 x9 : 70a50207385d7500 [ 80.772154][ T5231] x8 : 70a50207385d7500 x7 : 0000000000000001 x6 : 0000000000000001 [ 80.773310][ T5231] x5 : ffff800020b97378 x4 : ffff80001436f3e0 x3 : ffff800008508fa8 [ 80.774465][ T5231] x2 : 0000000000000001 x1 : 0000000100000000 x0 : 0000000000000026 [ 80.775658][ T5231] Call trace: [ 80.776123][ T5231] __btrfs_unlink_inode+0x904/0xaec [ 80.776862][ T5231] btrfs_unlink+0x108/0x258 [ 80.777487][ T5231] vfs_unlink+0x2e0/0x4f4 [ 80.778118][ T5231] do_unlinkat+0x328/0x618 [ 80.778806][ T5231] __arm64_sys_unlinkat+0xe0/0xfc [ 80.779567][ T5231] invoke_syscall+0x98/0x2b0 [ 80.780242][ T5231] el0_svc_common+0x138/0x258 [ 80.780930][ T5231] do_el0_svc+0x58/0x13c [ 80.781545][ T5231] el0_svc+0x78/0x1d0 [ 80.782113][ T5231] el0t_64_sync_handler+0xcc/0xe4 [ 80.782882][ T5231] el0t_64_sync+0x1a0/0x1a4 [ 80.783640][ T5231] irq event stamp: 79776 [ 80.784366][ T5231] hardirqs last enabled at (79775): [] __up_console_sem+0xb4/0xfc [ 80.785780][ T5231] hardirqs last disabled at (79776): [] el1_dbg+0x24/0x80 [ 80.787076][ T5231] softirqs last enabled at (79756): [] handle_softirqs+0xa40/0xbe4 [ 80.788479][ T5231] softirqs last disabled at (79739): [] __irq_exit_rcu+0x240/0x43c [ 80.789973][ T5231] ---[ end trace ec21c05403b012b7 ]--- [ 80.794199][ T5231] BTRFS: error (device loop0) in __btrfs_unlink_inode:4182: errno=-12 Out of memory [ 80.795874][ T5231] BTRFS info (device loop0): forced readonly [ 80.961371][ T5253] BTRFS: device fsid c9fe44da-de57-406a-8241-57ec7d4412cf devid 1 transid 8 /dev/loop0 scanned by syz.0.26 (5253) [ 80.967775][ T5253] BTRFS info (device loop0): using crc32c (crc32c-generic) checksum algorithm [ 80.969158][ T5253] BTRFS info (device loop0): using free space tree [ 80.970139][ T5253] BTRFS info (device loop0): has skinny extents [ 80.994806][ T5253] BTRFS info (device loop0): enabling ssd optimizations [ 80.999184][ T5253] FAULT_INJECTION: forcing a failure. [ 80.999184][ T5253] name failslab, interval 1, probability 0, space 0, times 0 [ 81.001150][ T5253] CPU: 1 PID: 5253 Comm: syz.0.26 Tainted: G W syzkaller #0 [ 81.002360][ T5253] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/03/2025 [ 81.003777][ T5253] Call trace: [ 81.004222][ T5253] dump_backtrace+0x0/0x458 [ 81.004860][ T5253] show_stack+0x2c/0x3c [ 81.005490][ T5253] __dump_stack+0x30/0x40 [ 81.006170][ T5253] dump_stack_lvl+0xf4/0x15c [ 81.006828][ T5253] dump_stack+0x1c/0x5c [ 81.007465][ T5253] should_fail+0x3bc/0x514 [ 81.008140][ T5253] __should_failslab+0xbc/0x10c [ 81.008872][ T5253] should_failslab+0x10/0x28 [ 81.009535][ T5253] slab_pre_alloc_hook+0x64/0xe8 [ 81.010282][ T5253] kmem_cache_alloc_trace+0x98/0x3ec [ 81.011127][ T5253] btrfs_delete_delayed_dir_index+0x22c/0x56c [ 81.012038][ T5253] __btrfs_unlink_inode+0x350/0xaec [ 81.012805][ T5253] btrfs_unlink+0x108/0x258 [ 81.013488][ T5253] vfs_unlink+0x2e0/0x4f4 [ 81.014166][ T5253] do_unlinkat+0x328/0x618 [ 81.014824][ T5253] __arm64_sys_unlinkat+0xe0/0xfc [ 81.015558][ T5253] invoke_syscall+0x98/0x2b0 [ 81.016250][ T5253] el0_svc_common+0x138/0x258 [ 81.016917][ T5253] do_el0_svc+0x58/0x13c [ 81.017505][ T5253] el0_svc+0x78/0x1d0 [ 81.018077][ T5253] el0t_64_sync_handler+0xcc/0xe4 [ 81.018850][ T5253] el0t_64_sync+0x1a0/0x1a4 [ 81.020213][ T5253] ------------[ cut here ]------------ [ 81.021147][ T5253] WARNING: CPU: 1 PID: 5253 at fs/btrfs/inode.c:4182 __btrfs_unlink_inode+0x904/0xaec [ 81.022578][ T5253] Modules linked in: [ 81.023153][ T5253] CPU: 1 PID: 5253 Comm: syz.0.26 Tainted: G W syzkaller #0 [ 81.024454][ T5253] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/03/2025 [ 81.026075][ T5253] pstate: 62400005 (nZCv daif +PAN -UAO +TCO -DIT -SSBS BTYPE=--) [ 81.027197][ T5253] pc : __btrfs_unlink_inode+0x904/0xaec [ 81.028018][ T5253] lr : __btrfs_unlink_inode+0x904/0xaec [ 81.028858][ T5253] sp : ffff800020ca7a60 [ 81.029496][ T5253] x29: ffff800020ca7b10 x28: ffff0000d9006000 x27: ffff0000e8d99810 [ 81.030680][ T5253] x26: 0000000000000100 x25: 00000000fffffff4 x24: ffff0000cbd162c0 [ 81.031872][ T5253] x23: ffff700004194f54 x22: dfff800000000000 x21: ffff0000e8de75c0 [ 81.032999][ T5253] x20: ffff0000de6a5ec8 x19: 1fffe0001bcd4bd9 x18: 0000000000000001 [ 81.034253][ T5253] x17: 0000000000000000 x16: ffff800011254fd8 x15: 00000000ffffffff [ 81.035494][ T5253] x14: 0000000000000001 x13: 1fffe000341f49ab x12: 0000000000ff0100 [ 81.036684][ T5253] x11: 0000000000000000 x10: 0000000000000000 x9 : b934b57b2088c800 [ 81.037927][ T5253] x8 : b934b57b2088c800 x7 : 0000000000000001 x6 : 0000000000000001 [ 81.039134][ T5253] x5 : ffff800020ca7378 x4 : ffff80001436f3e0 x3 : ffff800008508fa8 [ 81.040401][ T5253] x2 : 0000000000000001 x1 : 0000000100000000 x0 : 0000000000000026 [ 81.041609][ T5253] Call trace: [ 81.042098][ T5253] __btrfs_unlink_inode+0x904/0xaec [ 81.042836][ T5253] btrfs_unlink+0x108/0x258 [ 81.043566][ T5253] vfs_unlink+0x2e0/0x4f4 [ 81.044208][ T5253] do_unlinkat+0x328/0x618 [ 81.044862][ T5253] __arm64_sys_unlinkat+0xe0/0xfc [ 81.045652][ T5253] invoke_syscall+0x98/0x2b0 [ 81.046387][ T5253] el0_svc_common+0x138/0x258 [ 81.047135][ T5253] do_el0_svc+0x58/0x13c [ 81.047780][ T5253] el0_svc+0x78/0x1d0 [ 81.048402][ T5253] el0t_64_sync_handler+0xcc/0xe4 [ 81.049177][ T5253] el0t_64_sync+0x1a0/0x1a4 [ 81.049819][ T5253] irq event stamp: 78996 [ 81.050430][ T5253] hardirqs last enabled at (78995): [] __up_console_sem+0xb4/0xfc [ 81.051904][ T5253] hardirqs last disabled at (78996): [] el1_dbg+0x24/0x80 [ 81.053199][ T5253] softirqs last enabled at (78976): [] handle_softirqs+0xa40/0xbe4 [ 81.054710][ T5253] softirqs last disabled at (78949): [] __irq_exit_rcu+0x240/0x43c [ 81.056068][ T5253] ---[ end trace ec21c05403b012b8 ]--- [ 81.057727][ T5253] BTRFS: error (device loop0) in __btrfs_unlink_inode:4182: errno=-12 Out of memory [ 81.059237][ T5253] BTRFS info (device loop0): forced readonly [ 81.309893][ T5274] BTRFS: device fsid c9fe44da-de57-406a-8241-57ec7d4412cf devid 1 transid 8 /dev/loop0 scanned by syz.0.27 (5274) [ 81.314174][ T5274] BTRFS info (device loop0): using crc32c (crc32c-generic) checksum algorithm [ 81.315955][ T5274] BTRFS info (device loop0): using free space tree [ 81.316991][ T5274] BTRFS info (device loop0): has skinny extents [ 81.324173][ T5274] BTRFS info (device loop0): enabling ssd optimizations [ 81.328873][ T5274] FAULT_INJECTION: forcing a failure. [ 81.328873][ T5274] name failslab, interval 1, probability 0, space 0, times 0 [ 81.330764][ T5274] CPU: 0 PID: 5274 Comm: syz.0.27 Tainted: G W syzkaller #0 [ 81.332111][ T5274] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/03/2025 [ 81.333605][ T5274] Call trace: [ 81.334101][ T5274] dump_backtrace+0x0/0x458 [ 81.334756][ T5274] show_stack+0x2c/0x3c [ 81.335294][ T5274] __dump_stack+0x30/0x40 [ 81.335963][ T5274] dump_stack_lvl+0xf4/0x15c [ 81.336646][ T5274] dump_stack+0x1c/0x5c [ 81.337310][ T5274] should_fail+0x3bc/0x514 [ 81.337937][ T5274] __should_failslab+0xbc/0x10c [ 81.338628][ T5274] should_failslab+0x10/0x28 [ 81.339254][ T5274] slab_pre_alloc_hook+0x64/0xe8 [ 81.339944][ T5274] kmem_cache_alloc+0x94/0x3d4 [ 81.340579][ T5274] btrfs_alloc_path+0x5c/0x68 [ 81.341261][ T5274] __btrfs_unlink_inode+0x1dc/0xaec [ 81.341975][ T5274] btrfs_unlink+0x108/0x258 [ 81.342614][ T5274] vfs_unlink+0x2e0/0x4f4 [ 81.343235][ T5274] do_unlinkat+0x328/0x618 [ 81.343888][ T5274] __arm64_sys_unlinkat+0xe0/0xfc [ 81.344633][ T5274] invoke_syscall+0x98/0x2b0 [ 81.345301][ T5274] el0_svc_common+0x138/0x258 [ 81.345952][ T5274] do_el0_svc+0x58/0x13c [ 81.346564][ T5274] el0_svc+0x78/0x1d0 [ 81.347166][ T5274] el0t_64_sync_handler+0xcc/0xe4 [ 81.347927][ T5274] el0t_64_sync+0x1a0/0x1a4 [ 81.387521][ T4958] BTRFS: device fsid c9fe44da-de57-406a-8241-57ec7d4412cf devid 1 transid 10 /dev/loop0 scanned by udevd (4958) [ 81.490151][ T5295] BTRFS info (device loop0): using crc32c (crc32c-generic) checksum algorithm [ 81.491758][ T5295] BTRFS info (device loop0): using free space tree [ 81.492743][ T5295] BTRFS info (device loop0): has skinny extents [ 81.503952][ T5295] BTRFS info (device loop0): enabling ssd optimizations [ 81.510746][ T5295] FAULT_INJECTION: forcing a failure. [ 81.510746][ T5295] name failslab, interval 1, probability 0, space 0, times 0 [ 81.512700][ T5295] CPU: 1 PID: 5295 Comm: syz.0.28 Tainted: G W syzkaller #0 [ 81.513925][ T5295] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/03/2025 [ 81.515440][ T5295] Call trace: [ 81.515941][ T5295] dump_backtrace+0x0/0x458 [ 81.516619][ T5295] show_stack+0x2c/0x3c [ 81.517243][ T5295] __dump_stack+0x30/0x40 [ 81.517863][ T5295] dump_stack_lvl+0xf4/0x15c [ 81.518535][ T5295] dump_stack+0x1c/0x5c [ 81.519267][ T5295] should_fail+0x3bc/0x514 [ 81.519895][ T5295] __should_failslab+0xbc/0x10c [ 81.520670][ T5295] should_failslab+0x10/0x28 [ 81.521354][ T5295] slab_pre_alloc_hook+0x64/0xe8 [ 81.522126][ T5295] kmem_cache_alloc+0x94/0x3d4 [ 81.522810][ T5295] btrfs_alloc_path+0x5c/0x68 [ 81.523498][ T5295] __btrfs_unlink_inode+0x1dc/0xaec [ 81.524264][ T5295] btrfs_unlink+0x108/0x258 [ 81.524902][ T5295] vfs_unlink+0x2e0/0x4f4 [ 81.525524][ T5295] do_unlinkat+0x328/0x618 [ 81.526162][ T5295] __arm64_sys_unlinkat+0xe0/0xfc [ 81.526881][ T5295] invoke_syscall+0x98/0x2b0 [ 81.527547][ T5295] el0_svc_common+0x138/0x258 [ 81.528271][ T5295] do_el0_svc+0x58/0x13c [ 81.528888][ T5295] el0_svc+0x78/0x1d0 [ 81.529448][ T5295] el0t_64_sync_handler+0xcc/0xe4 [ 81.530170][ T5295] el0t_64_sync+0x1a0/0x1a4 [ 81.758786][ T5317] BTRFS: device fsid c9fe44da-de57-406a-8241-57ec7d4412cf devid 1 transid 8 /dev/loop0 scanned by syz.0.29 (5317) [ 81.763001][ T5317] BTRFS info (device loop0): using crc32c (crc32c-generic) checksum algorithm [ 81.764670][ T5317] BTRFS info (device loop0): using free space tree [ 81.765950][ T5317] BTRFS info (device loop0): has skinny extents [ 81.784611][ T5317] BTRFS info (device loop0): enabling ssd optimizations [ 81.788568][ T5317] FAULT_INJECTION: forcing a failure. [ 81.788568][ T5317] name failslab, interval 1, probability 0, space 0, times 0 [ 81.790650][ T5317] CPU: 1 PID: 5317 Comm: syz.0.29 Tainted: G W syzkaller #0 [ 81.792034][ T5317] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/03/2025 [ 81.793450][ T5317] Call trace: [ 81.793909][ T5317] dump_backtrace+0x0/0x458 [ 81.794544][ T5317] show_stack+0x2c/0x3c [ 81.795192][ T5317] __dump_stack+0x30/0x40 [ 81.795897][ T5317] dump_stack_lvl+0xf4/0x15c [ 81.796555][ T5317] dump_stack+0x1c/0x5c [ 81.797199][ T5317] should_fail+0x3bc/0x514 [ 81.797880][ T5317] __should_failslab+0xbc/0x10c [ 81.798607][ T5317] should_failslab+0x10/0x28 [ 81.799387][ T5317] slab_pre_alloc_hook+0x64/0xe8 [ 81.800213][ T5317] kmem_cache_alloc_trace+0x98/0x3ec [ 81.801124][ T5317] btrfs_delete_delayed_dir_index+0x22c/0x56c [ 81.802152][ T5317] __btrfs_unlink_inode+0x350/0xaec [ 81.802961][ T5317] btrfs_unlink+0x108/0x258 [ 81.803621][ T5317] vfs_unlink+0x2e0/0x4f4 [ 81.804269][ T5317] do_unlinkat+0x328/0x618 [ 81.804948][ T5317] __arm64_sys_unlinkat+0xe0/0xfc [ 81.805728][ T5317] invoke_syscall+0x98/0x2b0 [ 81.806452][ T5317] el0_svc_common+0x138/0x258 [ 81.807217][ T5317] do_el0_svc+0x58/0x13c [ 81.807901][ T5317] el0_svc+0x78/0x1d0 [ 81.808517][ T5317] el0t_64_sync_handler+0xcc/0xe4 [ 81.809239][ T5317] el0t_64_sync+0x1a0/0x1a4 [ 81.810635][ T5317] ------------[ cut here ]------------ [ 81.811542][ T5317] WARNING: CPU: 1 PID: 5317 at fs/btrfs/inode.c:4182 __btrfs_unlink_inode+0x904/0xaec [ 81.812999][ T5317] Modules linked in: [ 81.813592][ T5317] CPU: 1 PID: 5317 Comm: syz.0.29 Tainted: G W syzkaller #0 [ 81.814882][ T5317] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/03/2025 [ 81.816423][ T5317] pstate: 62400005 (nZCv daif +PAN -UAO +TCO -DIT -SSBS BTYPE=--) [ 81.817641][ T5317] pc : __btrfs_unlink_inode+0x904/0xaec [ 81.818511][ T5317] lr : __btrfs_unlink_inode+0x904/0xaec [ 81.819338][ T5317] sp : ffff800020fe7a60 [ 81.820005][ T5317] x29: ffff800020fe7b10 x28: ffff0000c93be000 x27: ffff0000e8d99c10 [ 81.821231][ T5317] x26: 0000000000000100 x25: 00000000fffffff4 x24: ffff0000e86e2370 [ 81.822432][ T5317] x23: ffff7000041fcf54 x22: dfff800000000000 x21: ffff0000e8d25850 [ 81.823603][ T5317] x20: ffff0000de6a53c8 x19: 1fffe0001bcd4a79 x18: 0000000000000001 [ 81.824821][ T5317] x17: 0000000000000000 x16: ffff800011254fd8 x15: 00000000ffffffff [ 81.825962][ T5317] x14: 0000000000000001 x13: 1fffe000341f49ab x12: 0000000000ff0100 [ 81.827097][ T5317] x11: 0000000000000000 x10: 0000000000000000 x9 : d496d378702b3700 [ 81.828344][ T5317] x8 : d496d378702b3700 x7 : 0000000000000001 x6 : 0000000000000001 [ 81.829549][ T5317] x5 : ffff800020fe7378 x4 : ffff80001436f3e0 x3 : ffff800008508fa8 [ 81.830793][ T5317] x2 : 0000000000000001 x1 : 0000000100000000 x0 : 0000000000000026 [ 81.832026][ T5317] Call trace: [ 81.832529][ T5317] __btrfs_unlink_inode+0x904/0xaec [ 81.833333][ T5317] btrfs_unlink+0x108/0x258 [ 81.834005][ T5317] vfs_unlink+0x2e0/0x4f4 [ 81.834607][ T5317] do_unlinkat+0x328/0x618 [ 81.835238][ T5317] __arm64_sys_unlinkat+0xe0/0xfc [ 81.835978][ T5317] invoke_syscall+0x98/0x2b0 [ 81.836658][ T5317] el0_svc_common+0x138/0x258 [ 81.837342][ T5317] do_el0_svc+0x58/0x13c [ 81.837981][ T5317] el0_svc+0x78/0x1d0 [ 81.838510][ T5317] el0t_64_sync_handler+0xcc/0xe4 [ 81.839285][ T5317] el0t_64_sync+0x1a0/0x1a4 [ 81.839915][ T5317] irq event stamp: 78778 [ 81.840634][ T5317] hardirqs last enabled at (78777): [] __up_console_sem+0xb4/0xfc [ 81.842013][ T5317] hardirqs last disabled at (78778): [] el1_dbg+0x24/0x80 [ 81.843242][ T5317] softirqs last enabled at (78758): [] handle_softirqs+0xa40/0xbe4 [ 81.844623][ T5317] softirqs last disabled at (78741): [] __irq_exit_rcu+0x240/0x43c [ 81.846064][ T5317] ---[ end trace ec21c05403b012b9 ]--- [ 81.847670][ T5317] BTRFS: error (device loop0) in __btrfs_unlink_inode:4182: errno=-12 Out of memory [ 81.849198][ T5317] BTRFS info (device loop0): forced readonly [ 82.079714][ T5339] BTRFS: device fsid c9fe44da-de57-406a-8241-57ec7d4412cf devid 1 transid 8 /dev/loop0 scanned by syz.0.30 (5339) [ 82.084239][ T5339] BTRFS info (device loop0): using crc32c (crc32c-generic) checksum algorithm [ 82.085764][ T5339] BTRFS info (device loop0): using free space tree [ 82.086791][ T5339] BTRFS info (device loop0): has skinny extents [ 82.094031][ T5339] BTRFS info (device loop0): enabling ssd optimizations [ 82.098414][ T5339] FAULT_INJECTION: forcing a failure. [ 82.098414][ T5339] name failslab, interval 1, probability 0, space 0, times 0 [ 82.100398][ T5339] CPU: 0 PID: 5339 Comm: syz.0.30 Tainted: G W syzkaller #0 [ 82.101587][ T5339] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/03/2025 [ 82.103100][ T5339] Call trace: [ 82.103609][ T5339] dump_backtrace+0x0/0x458 [ 82.104298][ T5339] show_stack+0x2c/0x3c [ 82.104902][ T5339] __dump_stack+0x30/0x40 [ 82.105539][ T5339] dump_stack_lvl+0xf4/0x15c [ 82.106192][ T5339] dump_stack+0x1c/0x5c [ 82.106749][ T5339] should_fail+0x3bc/0x514 [ 82.107398][ T5339] __should_failslab+0xbc/0x10c [ 82.108095][ T5339] should_failslab+0x10/0x28 [ 82.108807][ T5339] slab_pre_alloc_hook+0x64/0xe8 [ 82.109484][ T5339] kmem_cache_alloc+0x94/0x3d4 [ 82.110170][ T5339] btrfs_alloc_path+0x5c/0x68 [ 82.110904][ T5339] __btrfs_unlink_inode+0x1dc/0xaec [ 82.111730][ T5339] btrfs_unlink+0x108/0x258 [ 82.112428][ T5339] vfs_unlink+0x2e0/0x4f4 [ 82.113078][ T5339] do_unlinkat+0x328/0x618 [ 82.113752][ T5339] __arm64_sys_unlinkat+0xe0/0xfc [ 82.114479][ T5339] invoke_syscall+0x98/0x2b0 [ 82.115175][ T5339] el0_svc_common+0x138/0x258 [ 82.115926][ T5339] do_el0_svc+0x58/0x13c [ 82.116559][ T5339] el0_svc+0x78/0x1d0 [ 82.117135][ T5339] el0t_64_sync_handler+0xcc/0xe4 [ 82.117867][ T5339] el0t_64_sync+0x1a0/0x1a4 [ 82.172374][ T4958] BTRFS: device fsid c9fe44da-de57-406a-8241-57ec7d4412cf devid 1 transid 10 /dev/loop0 scanned by udevd (4958) [ 82.378745][ T5360] BTRFS info (device loop0): using crc32c (crc32c-generic) checksum algorithm [ 82.380270][ T5360] BTRFS info (device loop0): using free space tree [ 82.381303][ T5360] BTRFS info (device loop0): has skinny extents [ 82.394428][ T5360] BTRFS info (device loop0): enabling ssd optimizations [ 82.400670][ T5360] FAULT_INJECTION: forcing a failure. [ 82.400670][ T5360] name failslab, interval 1, probability 0, space 0, times 0 [ 82.402695][ T5360] CPU: 0 PID: 5360 Comm: syz.0.31 Tainted: G W syzkaller #0 [ 82.404074][ T5360] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/03/2025 [ 82.405596][ T5360] Call trace: [ 82.406073][ T5360] dump_backtrace+0x0/0x458 [ 82.406756][ T5360] show_stack+0x2c/0x3c [ 82.407361][ T5360] __dump_stack+0x30/0x40 [ 82.407995][ T5360] dump_stack_lvl+0xf4/0x15c [ 82.408566][ T5360] dump_stack+0x1c/0x5c [ 82.409147][ T5360] should_fail+0x3bc/0x514 [ 82.409791][ T5360] __should_failslab+0xbc/0x10c [ 82.410513][ T5360] should_failslab+0x10/0x28 [ 82.411166][ T5360] slab_pre_alloc_hook+0x64/0xe8 [ 82.411932][ T5360] kmem_cache_alloc_trace+0x98/0x3ec [ 82.412695][ T5360] btrfs_delete_delayed_dir_index+0x22c/0x56c [ 82.413598][ T5360] __btrfs_unlink_inode+0x350/0xaec [ 82.414347][ T5360] btrfs_unlink+0x108/0x258 [ 82.414969][ T5360] vfs_unlink+0x2e0/0x4f4 [ 82.415568][ T5360] do_unlinkat+0x328/0x618 [ 82.416190][ T5360] __arm64_sys_unlinkat+0xe0/0xfc [ 82.416903][ T5360] invoke_syscall+0x98/0x2b0 [ 82.417562][ T5360] el0_svc_common+0x138/0x258 [ 82.418221][ T5360] do_el0_svc+0x58/0x13c [ 82.418834][ T5360] el0_svc+0x78/0x1d0 [ 82.419409][ T5360] el0t_64_sync_handler+0xcc/0xe4 [ 82.420151][ T5360] el0t_64_sync+0x1a0/0x1a4 [ 82.421291][ T5360] ------------[ cut here ]------------ [ 82.422214][ T5360] WARNING: CPU: 0 PID: 5360 at fs/btrfs/inode.c:4182 __btrfs_unlink_inode+0x904/0xaec [ 82.423653][ T5360] Modules linked in: [ 82.424205][ T5360] CPU: 0 PID: 5360 Comm: syz.0.31 Tainted: G W syzkaller #0 [ 82.425511][ T5360] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/03/2025 [ 82.426990][ T5360] pstate: 62400005 (nZCv daif +PAN -UAO +TCO -DIT -SSBS BTYPE=--) [ 82.428109][ T5360] pc : __btrfs_unlink_inode+0x904/0xaec [ 82.428928][ T5360] lr : __btrfs_unlink_inode+0x904/0xaec [ 82.429719][ T5360] sp : ffff800020eb7a60 [ 82.430391][ T5360] x29: ffff800020eb7b10 x28: ffff0000d3a38000 x27: ffff0000de701810 [ 82.431655][ T5360] x26: 0000000000000100 x25: 00000000fffffff4 x24: ffff0000d31aa160 [ 82.432933][ T5360] x23: ffff7000041d6f54 x22: dfff800000000000 x21: ffff0000e26413a0 [ 82.434258][ T5360] x20: ffff0000de7bfc08 x19: 1fffe0001bcf7f81 x18: 0000000000000001 [ 82.435451][ T5360] x17: 0000000000000000 x16: ffff800011254fd8 x15: 00000000ffffffff [ 82.436829][ T5360] x14: 0000000000000001 x13: 1fffe000341f07ab x12: 0000000000ff0100 [ 82.438071][ T5360] x11: 0000000000000000 x10: 0000000000000000 x9 : e02877babd485400 [ 82.439305][ T5360] x8 : e02877babd485400 x7 : 0000000000000001 x6 : 0000000000000001 [ 82.440521][ T5360] x5 : ffff800020eb7378 x4 : ffff80001436f3e0 x3 : ffff800008508fa8 [ 82.441730][ T5360] x2 : 0000000000000001 x1 : 0000000100000000 x0 : 0000000000000026 [ 82.442927][ T5360] Call trace: [ 82.443405][ T5360] __btrfs_unlink_inode+0x904/0xaec [ 82.444208][ T5360] btrfs_unlink+0x108/0x258 [ 82.444888][ T5360] vfs_unlink+0x2e0/0x4f4 [ 82.445505][ T5360] do_unlinkat+0x328/0x618 [ 82.446106][ T5360] __arm64_sys_unlinkat+0xe0/0xfc [ 82.446819][ T5360] invoke_syscall+0x98/0x2b0 [ 82.447535][ T5360] el0_svc_common+0x138/0x258 [ 82.448180][ T5360] do_el0_svc+0x58/0x13c [ 82.448829][ T5360] el0_svc+0x78/0x1d0 [ 82.449424][ T5360] el0t_64_sync_handler+0xcc/0xe4 [ 82.450141][ T5360] el0t_64_sync+0x1a0/0x1a4 [ 82.450806][ T5360] irq event stamp: 79304 [ 82.451504][ T5360] hardirqs last enabled at (79303): [] __up_console_sem+0xb4/0xfc [ 82.452894][ T5360] hardirqs last disabled at (79304): [] el1_dbg+0x24/0x80 [ 82.454204][ T5360] softirqs last enabled at (79284): [] handle_softirqs+0xa40/0xbe4 [ 82.455640][ T5360] softirqs last disabled at (79265): [] __irq_exit_rcu+0x240/0x43c [ 82.457035][ T5360] ---[ end trace ec21c05403b012ba ]--- [ 82.458367][ T5360] BTRFS: error (device loop0) in __btrfs_unlink_inode:4182: errno=-12 Out of memory [ 82.459910][ T5360] BTRFS info (device loop0): forced readonly 1970/01/01 00:01:22 executed programs: 19 [ 82.590732][ T5383] set_capacity_and_notify: 7 callbacks suppressed [ 82.590740][ T5383] loop0: detected capacity change from 0 to 32768 [ 82.655786][ T5383] BTRFS: device fsid c9fe44da-de57-406a-8241-57ec7d4412cf devid 1 transid 8 /dev/loop0 scanned by syz.0.32 (5383) [ 82.658964][ T5383] BTRFS info (device loop0): using crc32c (crc32c-generic) checksum algorithm [ 82.660446][ T5383] BTRFS info (device loop0): using free space tree [ 82.661473][ T5383] BTRFS info (device loop0): has skinny extents [ 82.669005][ T5383] BTRFS info (device loop0): enabling ssd optimizations [ 82.673087][ T5383] FAULT_INJECTION: forcing a failure. [ 82.673087][ T5383] name failslab, interval 1, probability 0, space 0, times 0 [ 82.675392][ T5383] CPU: 1 PID: 5383 Comm: syz.0.32 Tainted: G W syzkaller #0 [ 82.676842][ T5383] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/03/2025 [ 82.678536][ T5383] Call trace: [ 82.679080][ T5383] dump_backtrace+0x0/0x458 [ 82.679825][ T5383] show_stack+0x2c/0x3c [ 82.680387][ T5383] __dump_stack+0x30/0x40 [ 82.681048][ T5383] dump_stack_lvl+0xf4/0x15c [ 82.681726][ T5383] dump_stack+0x1c/0x5c [ 82.682374][ T5383] should_fail+0x3bc/0x514 [ 82.682989][ T5383] __should_failslab+0xbc/0x10c [ 82.683752][ T5383] should_failslab+0x10/0x28 [ 82.684431][ T5383] slab_pre_alloc_hook+0x64/0xe8 [ 82.685217][ T5383] kmem_cache_alloc_trace+0x98/0x3ec [ 82.686067][ T5383] btrfs_delete_delayed_dir_index+0x22c/0x56c [ 82.686954][ T5383] __btrfs_unlink_inode+0x350/0xaec [ 82.687781][ T5383] btrfs_unlink+0x108/0x258 [ 82.688395][ T5383] vfs_unlink+0x2e0/0x4f4 [ 82.688983][ T5383] do_unlinkat+0x328/0x618 [ 82.689674][ T5383] __arm64_sys_unlinkat+0xe0/0xfc [ 82.690411][ T5383] invoke_syscall+0x98/0x2b0 [ 82.691103][ T5383] el0_svc_common+0x138/0x258 [ 82.691800][ T5383] do_el0_svc+0x58/0x13c [ 82.692437][ T5383] el0_svc+0x78/0x1d0 [ 82.693026][ T5383] el0t_64_sync_handler+0xcc/0xe4 [ 82.693728][ T5383] el0t_64_sync+0x1a0/0x1a4 [ 82.695703][ T5383] ------------[ cut here ]------------ [ 82.696669][ T5383] WARNING: CPU: 1 PID: 5383 at fs/btrfs/inode.c:4182 __btrfs_unlink_inode+0x904/0xaec [ 82.698216][ T5383] Modules linked in: [ 82.698827][ T5383] CPU: 1 PID: 5383 Comm: syz.0.32 Tainted: G W syzkaller #0 [ 82.700104][ T5383] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/03/2025 [ 82.701676][ T5383] pstate: 62400005 (nZCv daif +PAN -UAO +TCO -DIT -SSBS BTYPE=--) [ 82.702879][ T5383] pc : __btrfs_unlink_inode+0x904/0xaec [ 82.703711][ T5383] lr : __btrfs_unlink_inode+0x904/0xaec [ 82.704647][ T5383] sp : ffff800021007a60 [ 82.705266][ T5383] x29: ffff800021007b10 x28: ffff0000f082c000 x27: ffff0000e8d98810 [ 82.706553][ T5383] x26: 0000000000000100 x25: 00000000fffffff4 x24: ffff0000c9ecea50 [ 82.707805][ T5383] x23: ffff700004200f54 x22: dfff800000000000 x21: ffff0000e8dbebf0 [ 82.709006][ T5383] x20: ffff0000de6a55d8 x19: 1fffe0001bcd4abb x18: 0000000000000001 [ 82.710200][ T5383] x17: 0000000000000000 x16: ffff800011254fd8 x15: 00000000ffffffff [ 82.711433][ T5383] x14: 0000000000000001 x13: 1fffe000341f49ab x12: 0000000000ff0100 [ 82.712668][ T5383] x11: 0000000000000000 x10: 0000000000000000 x9 : 754b2774991ce200 [ 82.713909][ T5383] x8 : 754b2774991ce200 x7 : 0000000000000001 x6 : 0000000000000001 [ 82.715143][ T5383] x5 : ffff800021007378 x4 : ffff80001436f3e0 x3 : ffff800008508fa8 [ 82.716328][ T5383] x2 : 0000000000000001 x1 : 0000000100000000 x0 : 0000000000000026 [ 82.717522][ T5383] Call trace: [ 82.717998][ T5383] __btrfs_unlink_inode+0x904/0xaec [ 82.718748][ T5383] btrfs_unlink+0x108/0x258 [ 82.719410][ T5383] vfs_unlink+0x2e0/0x4f4 [ 82.720035][ T5383] do_unlinkat+0x328/0x618 [ 82.720707][ T5383] __arm64_sys_unlinkat+0xe0/0xfc [ 82.721431][ T5383] invoke_syscall+0x98/0x2b0 [ 82.722125][ T5383] el0_svc_common+0x138/0x258 [ 82.722843][ T5383] do_el0_svc+0x58/0x13c [ 82.723445][ T5383] el0_svc+0x78/0x1d0 [ 82.724108][ T5383] el0t_64_sync_handler+0xcc/0xe4 [ 82.724969][ T5383] el0t_64_sync+0x1a0/0x1a4 [ 82.725757][ T5383] irq event stamp: 79094 [ 82.726486][ T5383] hardirqs last enabled at (79093): [] __up_console_sem+0xb4/0xfc [ 82.727953][ T5383] hardirqs last disabled at (79094): [] el1_dbg+0x24/0x80 [ 82.729312][ T5383] softirqs last enabled at (79074): [] handle_softirqs+0xa40/0xbe4 [ 82.730812][ T5383] softirqs last disabled at (79063): [] __irq_exit_rcu+0x240/0x43c [ 82.732242][ T5383] ---[ end trace ec21c05403b012bb ]--- [ 82.734998][ T5383] BTRFS: error (device loop0) in __btrfs_unlink_inode:4182: errno=-12 Out of memory [ 82.736416][ T5383] BTRFS info (device loop0): forced readonly [ 82.873377][ T5405] loop0: detected capacity change from 0 to 32768 [ 82.956087][ T5405] BTRFS: device fsid c9fe44da-de57-406a-8241-57ec7d4412cf devid 1 transid 8 /dev/loop0 scanned by syz.0.33 (5405) [ 82.997922][ T5405] BTRFS info (device loop0): using crc32c (crc32c-generic) checksum algorithm [ 82.999500][ T5405] BTRFS info (device loop0): using free space tree [ 83.000460][ T5405] BTRFS info (device loop0): has skinny extents [ 83.008380][ T5405] BTRFS info (device loop0): enabling ssd optimizations [ 83.012047][ T5405] FAULT_INJECTION: forcing a failure. [ 83.012047][ T5405] name failslab, interval 1, probability 0, space 0, times 0 [ 83.014177][ T5405] CPU: 1 PID: 5405 Comm: syz.0.33 Tainted: G W syzkaller #0 [ 83.015569][ T5405] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/03/2025 [ 83.017221][ T5405] Call trace: [ 83.017694][ T5405] dump_backtrace+0x0/0x458 [ 83.018380][ T5405] show_stack+0x2c/0x3c [ 83.019026][ T5405] __dump_stack+0x30/0x40 [ 83.019724][ T5405] dump_stack_lvl+0xf4/0x15c [ 83.020494][ T5405] dump_stack+0x1c/0x5c [ 83.021123][ T5405] should_fail+0x3bc/0x514 [ 83.021838][ T5405] __should_failslab+0xbc/0x10c [ 83.022590][ T5405] should_failslab+0x10/0x28 [ 83.023254][ T5405] slab_pre_alloc_hook+0x64/0xe8 [ 83.024022][ T5405] kmem_cache_alloc_trace+0x98/0x3ec [ 83.024839][ T5405] btrfs_delete_delayed_dir_index+0x22c/0x56c [ 83.025761][ T5405] __btrfs_unlink_inode+0x350/0xaec [ 83.026511][ T5405] btrfs_unlink+0x108/0x258 [ 83.027198][ T5405] vfs_unlink+0x2e0/0x4f4 [ 83.027830][ T5405] do_unlinkat+0x328/0x618 [ 83.028460][ T5405] __arm64_sys_unlinkat+0xe0/0xfc [ 83.029207][ T5405] invoke_syscall+0x98/0x2b0 [ 83.029826][ T5405] el0_svc_common+0x138/0x258 [ 83.030484][ T5405] do_el0_svc+0x58/0x13c [ 83.031072][ T5405] el0_svc+0x78/0x1d0 [ 83.031692][ T5405] el0t_64_sync_handler+0xcc/0xe4 [ 83.032424][ T5405] el0t_64_sync+0x1a0/0x1a4 [ 83.034669][ T5405] ------------[ cut here ]------------ [ 83.035676][ T5405] WARNING: CPU: 1 PID: 5405 at fs/btrfs/inode.c:4182 __btrfs_unlink_inode+0x904/0xaec [ 83.037149][ T5405] Modules linked in: [ 83.037754][ T5405] CPU: 1 PID: 5405 Comm: syz.0.33 Tainted: G W syzkaller #0 [ 83.038930][ T5405] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/03/2025 [ 83.040374][ T5405] pstate: 62400005 (nZCv daif +PAN -UAO +TCO -DIT -SSBS BTYPE=--) [ 83.041516][ T5405] pc : __btrfs_unlink_inode+0x904/0xaec [ 83.042380][ T5405] lr : __btrfs_unlink_inode+0x904/0xaec [ 83.043171][ T5405] sp : ffff800021387a60 [ 83.043769][ T5405] x29: ffff800021387b10 x28: ffff0000d87f2000 x27: ffff0000e8d9a010 [ 83.044983][ T5405] x26: 0000000000000100 x25: 00000000fffffff4 x24: ffff0000c159aa50 [ 83.046175][ T5405] x23: ffff700004270f54 x22: dfff800000000000 x21: ffff0000e8dba740 [ 83.047359][ T5405] x20: ffff0000de6a5528 x19: 1fffe0001bcd4aa5 x18: 0000000000000001 [ 83.048498][ T5405] x17: 0000000000000000 x16: ffff800011254fd8 x15: 00000000ffffffff [ 83.049739][ T5405] x14: 0000000000000001 x13: 1fffe000341f49ab x12: 0000000000ff0100 [ 83.050882][ T5405] x11: 0000000000000000 x10: 0000000000000000 x9 : 88e83fe3014d6300 [ 83.052146][ T5405] x8 : 88e83fe3014d6300 x7 : 0000000000000001 x6 : 0000000000000001 [ 83.053404][ T5405] x5 : ffff800021387378 x4 : ffff80001436f3e0 x3 : ffff800008508fa8 [ 83.054671][ T5405] x2 : 0000000000000001 x1 : 0000000100000000 x0 : 0000000000000026 [ 83.055891][ T5405] Call trace: [ 83.056375][ T5405] __btrfs_unlink_inode+0x904/0xaec [ 83.057167][ T5405] btrfs_unlink+0x108/0x258 [ 83.057845][ T5405] vfs_unlink+0x2e0/0x4f4 [ 83.058484][ T5405] do_unlinkat+0x328/0x618 [ 83.059202][ T5405] __arm64_sys_unlinkat+0xe0/0xfc [ 83.059982][ T5405] invoke_syscall+0x98/0x2b0 [ 83.060689][ T5405] el0_svc_common+0x138/0x258 [ 83.061392][ T5405] do_el0_svc+0x58/0x13c [ 83.062047][ T5405] el0_svc+0x78/0x1d0 [ 83.062620][ T5405] el0t_64_sync_handler+0xcc/0xe4 [ 83.063388][ T5405] el0t_64_sync+0x1a0/0x1a4 [ 83.064105][ T5405] irq event stamp: 78834 [ 83.064708][ T5405] hardirqs last enabled at (78833): [] __up_console_sem+0xb4/0xfc [ 83.066114][ T5405] hardirqs last disabled at (78834): [] el1_dbg+0x24/0x80 [ 83.067468][ T5405] softirqs last enabled at (78814): [] handle_softirqs+0xa40/0xbe4 [ 83.068943][ T5405] softirqs last disabled at (78785): [] __irq_exit_rcu+0x240/0x43c [ 83.070301][ T5405] ---[ end trace ec21c05403b012bc ]--- [ 83.073319][ T5405] BTRFS: error (device loop0) in __btrfs_unlink_inode:4182: errno=-12 Out of memory [ 83.074894][ T5405] BTRFS info (device loop0): forced readonly [ 83.266728][ T5426] loop0: detected capacity change from 0 to 32768 [ 83.316019][ T5426] BTRFS: device fsid c9fe44da-de57-406a-8241-57ec7d4412cf devid 1 transid 8 /dev/loop0 scanned by syz.0.34 (5426) [ 83.319903][ T5426] BTRFS info (device loop0): using crc32c (crc32c-generic) checksum algorithm [ 83.321485][ T5426] BTRFS info (device loop0): using free space tree [ 83.322574][ T5426] BTRFS info (device loop0): has skinny extents [ 83.354351][ T5426] BTRFS info (device loop0): enabling ssd optimizations [ 83.358676][ T5426] FAULT_INJECTION: forcing a failure. [ 83.358676][ T5426] name failslab, interval 1, probability 0, space 0, times 0 [ 83.360558][ T5426] CPU: 0 PID: 5426 Comm: syz.0.34 Tainted: G W syzkaller #0 [ 83.361791][ T5426] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/03/2025 [ 83.363213][ T5426] Call trace: [ 83.363716][ T5426] dump_backtrace+0x0/0x458 [ 83.364412][ T5426] show_stack+0x2c/0x3c [ 83.365052][ T5426] __dump_stack+0x30/0x40 [ 83.365698][ T5426] dump_stack_lvl+0xf4/0x15c [ 83.366392][ T5426] dump_stack+0x1c/0x5c [ 83.366991][ T5426] should_fail+0x3bc/0x514 [ 83.367604][ T5426] __should_failslab+0xbc/0x10c [ 83.368268][ T5426] should_failslab+0x10/0x28 [ 83.368962][ T5426] slab_pre_alloc_hook+0x64/0xe8 [ 83.369704][ T5426] kmem_cache_alloc+0x94/0x3d4 [ 83.370395][ T5426] btrfs_alloc_path+0x5c/0x68 [ 83.371082][ T5426] __btrfs_unlink_inode+0x1dc/0xaec [ 83.371852][ T5426] btrfs_unlink+0x108/0x258 [ 83.372517][ T5426] vfs_unlink+0x2e0/0x4f4 [ 83.373110][ T5426] do_unlinkat+0x328/0x618 [ 83.373746][ T5426] __arm64_sys_unlinkat+0xe0/0xfc [ 83.374487][ T5426] invoke_syscall+0x98/0x2b0 [ 83.375134][ T5426] el0_svc_common+0x138/0x258 [ 83.375828][ T5426] do_el0_svc+0x58/0x13c [ 83.376443][ T5426] el0_svc+0x78/0x1d0 [ 83.377038][ T5426] el0t_64_sync_handler+0xcc/0xe4 [ 83.377793][ T5426] el0t_64_sync+0x1a0/0x1a4 [ 83.517500][ T5448] loop0: detected capacity change from 0 to 32768 [ 83.546077][ T5448] BTRFS: device fsid c9fe44da-de57-406a-8241-57ec7d4412cf devid 1 transid 8 /dev/loop0 scanned by syz.0.35 (5448) [ 83.549561][ T5448] BTRFS info (device loop0): using crc32c (crc32c-generic) checksum algorithm [ 83.550964][ T5448] BTRFS info (device loop0): using free space tree [ 83.552066][ T5448] BTRFS info (device loop0): has skinny extents [ 83.564814][ T5448] BTRFS info (device loop0): enabling ssd optimizations [ 83.568546][ T5448] FAULT_INJECTION: forcing a failure. [ 83.568546][ T5448] name failslab, interval 1, probability 0, space 0, times 0 [ 83.570652][ T5448] CPU: 0 PID: 5448 Comm: syz.0.35 Tainted: G W syzkaller #0 [ 83.571897][ T5448] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/03/2025 [ 83.573411][ T5448] Call trace: [ 83.573926][ T5448] dump_backtrace+0x0/0x458 [ 83.574576][ T5448] show_stack+0x2c/0x3c [ 83.575178][ T5448] __dump_stack+0x30/0x40 [ 83.575881][ T5448] dump_stack_lvl+0xf4/0x15c [ 83.576578][ T5448] dump_stack+0x1c/0x5c [ 83.577175][ T5448] should_fail+0x3bc/0x514 [ 83.577803][ T5448] __should_failslab+0xbc/0x10c [ 83.578499][ T5448] should_failslab+0x10/0x28 [ 83.579125][ T5448] slab_pre_alloc_hook+0x64/0xe8 [ 83.579812][ T5448] kmem_cache_alloc_trace+0x98/0x3ec [ 83.580577][ T5448] btrfs_delete_delayed_dir_index+0x22c/0x56c [ 83.581466][ T5448] __btrfs_unlink_inode+0x350/0xaec [ 83.582156][ T5448] btrfs_unlink+0x108/0x258 [ 83.582807][ T5448] vfs_unlink+0x2e0/0x4f4 [ 83.583456][ T5448] do_unlinkat+0x328/0x618 [ 83.584083][ T5448] __arm64_sys_unlinkat+0xe0/0xfc [ 83.584811][ T5448] invoke_syscall+0x98/0x2b0 [ 83.585454][ T5448] el0_svc_common+0x138/0x258 [ 83.586136][ T5448] do_el0_svc+0x58/0x13c [ 83.586710][ T5448] el0_svc+0x78/0x1d0 [ 83.587283][ T5448] el0t_64_sync_handler+0xcc/0xe4 [ 83.588021][ T5448] el0t_64_sync+0x1a0/0x1a4 [ 83.589077][ T5448] ------------[ cut here ]------------ [ 83.590102][ T5448] WARNING: CPU: 0 PID: 5448 at fs/btrfs/inode.c:4182 __btrfs_unlink_inode+0x904/0xaec [ 83.591586][ T5448] Modules linked in: [ 83.592173][ T5448] CPU: 0 PID: 5448 Comm: syz.0.35 Tainted: G W syzkaller #0 [ 83.593386][ T5448] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/03/2025 [ 83.594774][ T5448] pstate: 62400005 (nZCv daif +PAN -UAO +TCO -DIT -SSBS BTYPE=--) [ 83.595887][ T5448] pc : __btrfs_unlink_inode+0x904/0xaec [ 83.596661][ T5448] lr : __btrfs_unlink_inode+0x904/0xaec [ 83.597459][ T5448] sp : ffff800021007a60 [ 83.598035][ T5448] x29: ffff800021007b10 x28: ffff0000d3b00000 x27: ffff0000de702010 [ 83.599197][ T5448] x26: 0000000000000100 x25: 00000000fffffff4 x24: ffff0000d32e0b00 [ 83.600352][ T5448] x23: ffff700004200f54 x22: dfff800000000000 x21: ffff0000e2645850 [ 83.601502][ T5448] x20: ffff0000de7bf3c8 x19: 1fffe0001bcf7e79 x18: 0000000000000001 [ 83.602695][ T5448] x17: 0000000000000000 x16: ffff800008304ad4 x15: 00000000ffffffff [ 83.603914][ T5448] x14: 0000000000000001 x13: 1ffff00004200e6c x12: 0000000000ff0100 [ 83.605171][ T5448] x11: 0000000000000000 x10: 0000000000000000 x9 : df6d79011f6a9b00 [ 83.606408][ T5448] x8 : df6d79011f6a9b00 x7 : 0000000000000001 x6 : 0000000000000001 [ 83.607636][ T5448] x5 : ffff800021007378 x4 : ffff80001436f3e0 x3 : ffff800008304be4 [ 83.608777][ T5448] x2 : 0000000000000001 x1 : 0000000100000000 x0 : 0000000000000026 [ 83.610021][ T5448] Call trace: [ 83.610538][ T5448] __btrfs_unlink_inode+0x904/0xaec [ 83.611273][ T5448] btrfs_unlink+0x108/0x258 [ 83.611950][ T5448] vfs_unlink+0x2e0/0x4f4 [ 83.612574][ T5448] do_unlinkat+0x328/0x618 [ 83.613224][ T5448] __arm64_sys_unlinkat+0xe0/0xfc [ 83.613970][ T5448] invoke_syscall+0x98/0x2b0 [ 83.614646][ T5448] el0_svc_common+0x138/0x258 [ 83.615318][ T5448] do_el0_svc+0x58/0x13c [ 83.615941][ T5448] el0_svc+0x78/0x1d0 [ 83.616525][ T5448] el0t_64_sync_handler+0xcc/0xe4 [ 83.617298][ T5448] el0t_64_sync+0x1a0/0x1a4 [ 83.617922][ T5448] irq event stamp: 78964 [ 83.618498][ T5448] hardirqs last enabled at (78963): [] __up_console_sem+0xb4/0xfc [ 83.619889][ T5448] hardirqs last disabled at (78964): [] el1_dbg+0x24/0x80 [ 83.621023][ T5448] softirqs last enabled at (78944): [] handle_softirqs+0xa40/0xbe4 [ 83.622427][ T5448] softirqs last disabled at (78867): [] __irq_exit_rcu+0x240/0x43c [ 83.623800][ T5448] ---[ end trace ec21c05403b012bd ]--- [ 83.625473][ T5448] BTRFS: error (device loop0) in __btrfs_unlink_inode:4182: errno=-12 Out of memory [ 83.626984][ T5448] BTRFS info (device loop0): forced readonly [ 83.764048][ T5470] loop0: detected capacity change from 0 to 32768 [ 83.816196][ T5470] BTRFS: device fsid c9fe44da-de57-406a-8241-57ec7d4412cf devid 1 transid 8 /dev/loop0 scanned by syz.0.36 (5470) [ 83.819083][ T5470] BTRFS info (device loop0): using crc32c (crc32c-generic) checksum algorithm [ 83.820582][ T5470] BTRFS info (device loop0): using free space tree [ 83.822136][ T5470] BTRFS info (device loop0): has skinny extents [ 83.847539][ T5470] BTRFS info (device loop0): enabling ssd optimizations [ 83.851699][ T5470] FAULT_INJECTION: forcing a failure. [ 83.851699][ T5470] name failslab, interval 1, probability 0, space 0, times 0 [ 83.853632][ T5470] CPU: 0 PID: 5470 Comm: syz.0.36 Tainted: G W syzkaller #0 [ 83.854954][ T5470] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/03/2025 [ 83.856464][ T5470] Call trace: [ 83.856926][ T5470] dump_backtrace+0x0/0x458 [ 83.857576][ T5470] show_stack+0x2c/0x3c [ 83.858211][ T5470] __dump_stack+0x30/0x40 [ 83.858852][ T5470] dump_stack_lvl+0xf4/0x15c [ 83.859596][ T5470] dump_stack+0x1c/0x5c [ 83.860213][ T5470] should_fail+0x3bc/0x514 [ 83.860842][ T5470] __should_failslab+0xbc/0x10c [ 83.861583][ T5470] should_failslab+0x10/0x28 [ 83.862239][ T5470] slab_pre_alloc_hook+0x64/0xe8 [ 83.862920][ T5470] kmem_cache_alloc_trace+0x98/0x3ec [ 83.863640][ T5470] btrfs_delete_delayed_dir_index+0x22c/0x56c [ 83.864562][ T5470] __btrfs_unlink_inode+0x350/0xaec [ 83.865316][ T5470] btrfs_unlink+0x108/0x258 [ 83.865945][ T5470] vfs_unlink+0x2e0/0x4f4 [ 83.866574][ T5470] do_unlinkat+0x328/0x618 [ 83.867146][ T5470] __arm64_sys_unlinkat+0xe0/0xfc [ 83.867829][ T5470] invoke_syscall+0x98/0x2b0 [ 83.868521][ T5470] el0_svc_common+0x138/0x258 [ 83.869192][ T5470] do_el0_svc+0x58/0x13c [ 83.869819][ T5470] el0_svc+0x78/0x1d0 [ 83.870359][ T5470] el0t_64_sync_handler+0xcc/0xe4 [ 83.871087][ T5470] el0t_64_sync+0x1a0/0x1a4 [ 83.871967][ T5470] ------------[ cut here ]------------ [ 83.872965][ T5470] WARNING: CPU: 0 PID: 5470 at fs/btrfs/inode.c:4182 __btrfs_unlink_inode+0x904/0xaec [ 83.874363][ T5470] Modules linked in: [ 83.874987][ T5470] CPU: 0 PID: 5470 Comm: syz.0.36 Tainted: G W syzkaller #0 [ 83.876318][ T5470] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/03/2025 [ 83.877739][ T5470] pstate: 62400005 (nZCv daif +PAN -UAO +TCO -DIT -SSBS BTYPE=--) [ 83.878875][ T5470] pc : __btrfs_unlink_inode+0x904/0xaec [ 83.879702][ T5470] lr : __btrfs_unlink_inode+0x904/0xaec [ 83.880554][ T5470] sp : ffff800021007a60 [ 83.881137][ T5470] x29: ffff800021007b10 x28: ffff0000d5c44000 x27: ffff0000de702410 [ 83.882296][ T5470] x26: 0000000000000100 x25: 00000000fffffff4 x24: ffff0000ce203580 [ 83.883472][ T5470] x23: ffff700004200f54 x22: dfff800000000000 x21: ffff0000e8de0000 [ 83.884625][ T5470] x20: ffff0000de7bf268 x19: 1fffe0001bcf7e4d x18: 0000000000000001 [ 83.885883][ T5470] x17: 0000000000000000 x16: ffff800008304ad4 x15: 00000000ffffffff [ 83.887078][ T5470] x14: 0000000000000001 x13: 1ffff00004200e6c x12: 0000000000ff0100 [ 83.888224][ T5470] x11: 0000000000000000 x10: 0000000000000000 x9 : 163f5026cd46ef00 [ 83.889433][ T5470] x8 : 163f5026cd46ef00 x7 : 0000000000000001 x6 : 0000000000000001 [ 83.890699][ T5470] x5 : ffff800021007378 x4 : ffff80001436f3e0 x3 : ffff800008304be4 [ 83.891829][ T5470] x2 : 0000000000000001 x1 : 0000000100000000 x0 : 0000000000000026 [ 83.892992][ T5470] Call trace: [ 83.893504][ T5470] __btrfs_unlink_inode+0x904/0xaec [ 83.894231][ T5470] btrfs_unlink+0x108/0x258 [ 83.894945][ T5470] vfs_unlink+0x2e0/0x4f4 [ 83.895579][ T5470] do_unlinkat+0x328/0x618 [ 83.896225][ T5470] __arm64_sys_unlinkat+0xe0/0xfc [ 83.896938][ T5470] invoke_syscall+0x98/0x2b0 [ 83.897570][ T5470] el0_svc_common+0x138/0x258 [ 83.898314][ T5470] do_el0_svc+0x58/0x13c [ 83.898996][ T5470] el0_svc+0x78/0x1d0 [ 83.899554][ T5470] el0t_64_sync_handler+0xcc/0xe4 [ 83.900228][ T5470] el0t_64_sync+0x1a0/0x1a4 [ 83.901881][ T5470] irq event stamp: 79558 [ 83.902525][ T5470] hardirqs last enabled at (79557): [] __up_console_sem+0xb4/0xfc [ 83.903963][ T5470] hardirqs last disabled at (79558): [] el1_dbg+0x24/0x80 [ 83.905324][ T5470] softirqs last enabled at (79538): [] handle_softirqs+0xa40/0xbe4 [ 83.906702][ T5470] softirqs last disabled at (79527): [] __irq_exit_rcu+0x240/0x43c [ 83.908073][ T5470] ---[ end trace ec21c05403b012be ]--- [ 83.910204][ T5470] BTRFS: error (device loop0) in __btrfs_unlink_inode:4182: errno=-12 Out of memory [ 83.911668][ T5470] BTRFS info (device loop0): forced readonly [ 84.056805][ T5492] loop0: detected capacity change from 0 to 32768 [ 84.063965][ T5492] BTRFS: device fsid c9fe44da-de57-406a-8241-57ec7d4412cf devid 1 transid 8 /dev/loop0 scanned by syz.0.37 (5492) [ 84.068707][ T5492] BTRFS info (device loop0): using crc32c (crc32c-generic) checksum algorithm [ 84.070130][ T5492] BTRFS info (device loop0): using free space tree [ 84.071133][ T5492] BTRFS info (device loop0): has skinny extents [ 84.089478][ T5492] BTRFS info (device loop0): enabling ssd optimizations [ 84.093833][ T5492] FAULT_INJECTION: forcing a failure. [ 84.093833][ T5492] name failslab, interval 1, probability 0, space 0, times 0 [ 84.096442][ T5492] CPU: 1 PID: 5492 Comm: syz.0.37 Tainted: G W syzkaller #0 [ 84.097755][ T5492] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/03/2025 [ 84.099229][ T5492] Call trace: [ 84.099733][ T5492] dump_backtrace+0x0/0x458 [ 84.100421][ T5492] show_stack+0x2c/0x3c [ 84.101046][ T5492] __dump_stack+0x30/0x40 [ 84.101742][ T5492] dump_stack_lvl+0xf4/0x15c [ 84.102444][ T5492] dump_stack+0x1c/0x5c [ 84.103072][ T5492] should_fail+0x3bc/0x514 [ 84.103738][ T5492] __should_failslab+0xbc/0x10c [ 84.104473][ T5492] should_failslab+0x10/0x28 [ 84.105222][ T5492] slab_pre_alloc_hook+0x64/0xe8 [ 84.106104][ T5492] kmem_cache_alloc_trace+0x98/0x3ec [ 84.107002][ T5492] btrfs_delete_delayed_dir_index+0x22c/0x56c [ 84.108046][ T5492] __btrfs_unlink_inode+0x350/0xaec [ 84.108902][ T5492] btrfs_unlink+0x108/0x258 [ 84.109670][ T5492] vfs_unlink+0x2e0/0x4f4 [ 84.110389][ T5492] do_unlinkat+0x328/0x618 [ 84.111124][ T5492] __arm64_sys_unlinkat+0xe0/0xfc [ 84.111958][ T5492] invoke_syscall+0x98/0x2b0 [ 84.112670][ T5492] el0_svc_common+0x138/0x258 [ 84.113334][ T5492] do_el0_svc+0x58/0x13c [ 84.113982][ T5492] el0_svc+0x78/0x1d0 [ 84.114583][ T5492] el0t_64_sync_handler+0xcc/0xe4 [ 84.115331][ T5492] el0t_64_sync+0x1a0/0x1a4 [ 84.118079][ T5492] ------------[ cut here ]------------ [ 84.119049][ T5492] WARNING: CPU: 1 PID: 5492 at fs/btrfs/inode.c:4182 __btrfs_unlink_inode+0x904/0xaec [ 84.120477][ T5492] Modules linked in: [ 84.121028][ T5492] CPU: 1 PID: 5492 Comm: syz.0.37 Tainted: G W syzkaller #0 [ 84.122302][ T5492] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/03/2025 [ 84.123762][ T5492] pstate: 62400005 (nZCv daif +PAN -UAO +TCO -DIT -SSBS BTYPE=--) [ 84.124890][ T5492] pc : __btrfs_unlink_inode+0x904/0xaec [ 84.125704][ T5492] lr : __btrfs_unlink_inode+0x904/0xaec [ 84.126524][ T5492] sp : ffff8000216a7a60 [ 84.127149][ T5492] x29: ffff8000216a7b10 x28: ffff0000d2640000 x27: ffff0000e8d99410 [ 84.128371][ T5492] x26: 0000000000000100 x25: 00000000fffffff4 x24: ffff0000eefaf210 [ 84.129604][ T5492] x23: ffff7000042d4f54 x22: dfff800000000000 x21: ffff0000e8db9d70 [ 84.130882][ T5492] x20: ffff0000de6a5cb8 x19: 1fffe0001bcd4b97 x18: 0000000000000001 [ 84.132131][ T5492] x17: 0000000000000000 x16: ffff800011254fd8 x15: 00000000ffffffff [ 84.133355][ T5492] x14: 0000000000000001 x13: 1fffe000341f49ab x12: 0000000000ff0100 [ 84.134497][ T5492] x11: 0000000000000000 x10: 0000000000000000 x9 : 916c9faba0e24100 [ 84.135681][ T5492] x8 : 916c9faba0e24100 x7 : 0000000000000001 x6 : 0000000000000001 [ 84.136807][ T5492] x5 : ffff8000216a7378 x4 : ffff80001436f3e0 x3 : ffff800008508fa8 [ 84.138014][ T5492] x2 : 0000000000000001 x1 : 0000000100000000 x0 : 0000000000000026 [ 84.139265][ T5492] Call trace: [ 84.139744][ T5492] __btrfs_unlink_inode+0x904/0xaec [ 84.140550][ T5492] btrfs_unlink+0x108/0x258 [ 84.141171][ T5492] vfs_unlink+0x2e0/0x4f4 [ 84.141856][ T5492] do_unlinkat+0x328/0x618 [ 84.142506][ T5492] __arm64_sys_unlinkat+0xe0/0xfc [ 84.143296][ T5492] invoke_syscall+0x98/0x2b0 [ 84.143975][ T5492] el0_svc_common+0x138/0x258 [ 84.144640][ T5492] do_el0_svc+0x58/0x13c [ 84.145232][ T5492] el0_svc+0x78/0x1d0 [ 84.145807][ T5492] el0t_64_sync_handler+0xcc/0xe4 [ 84.146523][ T5492] el0t_64_sync+0x1a0/0x1a4 [ 84.147162][ T5492] irq event stamp: 79706 [ 84.147763][ T5492] hardirqs last enabled at (79705): [] __up_console_sem+0xb4/0xfc [ 84.149240][ T5492] hardirqs last disabled at (79706): [] el1_dbg+0x24/0x80 [ 84.150573][ T5492] softirqs last enabled at (79686): [] handle_softirqs+0xa40/0xbe4 [ 84.152028][ T5492] softirqs last disabled at (79645): [] __irq_exit_rcu+0x240/0x43c [ 84.153442][ T5492] ---[ end trace ec21c05403b012bf ]--- [ 84.156529][ T5492] BTRFS: error (device loop0) in __btrfs_unlink_inode:4182: errno=-12 Out of memory [ 84.157944][ T5492] BTRFS info (device loop0): forced readonly [ 84.354254][ T5514] loop0: detected capacity change from 0 to 32768 [ 84.440210][ T5514] BTRFS: device fsid c9fe44da-de57-406a-8241-57ec7d4412cf devid 1 transid 8 /dev/loop0 scanned by syz.0.38 (5514) [ 84.443746][ T5514] BTRFS info (device loop0): using crc32c (crc32c-generic) checksum algorithm [ 84.445584][ T5514] BTRFS info (device loop0): using free space tree [ 84.446687][ T5514] BTRFS info (device loop0): has skinny extents [ 84.453996][ T5514] BTRFS info (device loop0): enabling ssd optimizations [ 84.458438][ T5514] FAULT_INJECTION: forcing a failure. [ 84.458438][ T5514] name failslab, interval 1, probability 0, space 0, times 0 [ 84.460328][ T5514] CPU: 1 PID: 5514 Comm: syz.0.38 Tainted: G W syzkaller #0 [ 84.461595][ T5514] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/03/2025 [ 84.463115][ T5514] Call trace: [ 84.463581][ T5514] dump_backtrace+0x0/0x458 [ 84.464219][ T5514] show_stack+0x2c/0x3c [ 84.464844][ T5514] __dump_stack+0x30/0x40 [ 84.465497][ T5514] dump_stack_lvl+0xf4/0x15c [ 84.466205][ T5514] dump_stack+0x1c/0x5c [ 84.466816][ T5514] should_fail+0x3bc/0x514 [ 84.467478][ T5514] __should_failslab+0xbc/0x10c [ 84.468203][ T5514] should_failslab+0x10/0x28 [ 84.468907][ T5514] slab_pre_alloc_hook+0x64/0xe8 [ 84.469606][ T5514] kmem_cache_alloc+0x94/0x3d4 [ 84.470326][ T5514] btrfs_alloc_path+0x5c/0x68 [ 84.471047][ T5514] __btrfs_unlink_inode+0x1dc/0xaec [ 84.471813][ T5514] btrfs_unlink+0x108/0x258 [ 84.472509][ T5514] vfs_unlink+0x2e0/0x4f4 [ 84.473172][ T5514] do_unlinkat+0x328/0x618 [ 84.473831][ T5514] __arm64_sys_unlinkat+0xe0/0xfc [ 84.474654][ T5514] invoke_syscall+0x98/0x2b0 [ 84.475302][ T5514] el0_svc_common+0x138/0x258 [ 84.476012][ T5514] do_el0_svc+0x58/0x13c [ 84.476705][ T5514] el0_svc+0x78/0x1d0 [ 84.477289][ T5514] el0t_64_sync_handler+0xcc/0xe4 [ 84.478035][ T5514] el0t_64_sync+0x1a0/0x1a4 [ 84.520643][ T4958] BTRFS: device fsid c9fe44da-de57-406a-8241-57ec7d4412cf devid 1 transid 10 /dev/loop0 scanned by udevd (4958) [ 84.623082][ T5536] loop0: detected capacity change from 0 to 32768 [ 84.737563][ T5536] BTRFS info (device loop0): using crc32c (crc32c-generic) checksum algorithm [ 84.738994][ T5536] BTRFS info (device loop0): using free space tree [ 84.739942][ T5536] BTRFS info (device loop0): has skinny extents [ 84.747817][ T5536] BTRFS info (device loop0): enabling ssd optimizations [ 84.751619][ T5536] FAULT_INJECTION: forcing a failure. [ 84.751619][ T5536] name failslab, interval 1, probability 0, space 0, times 0 [ 84.753765][ T5536] CPU: 0 PID: 5536 Comm: syz.0.39 Tainted: G W syzkaller #0 [ 84.755065][ T5536] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/03/2025 [ 84.756665][ T5536] Call trace: [ 84.757147][ T5536] dump_backtrace+0x0/0x458 [ 84.757864][ T5536] show_stack+0x2c/0x3c [ 84.758473][ T5536] __dump_stack+0x30/0x40 [ 84.759097][ T5536] dump_stack_lvl+0xf4/0x15c [ 84.759735][ T5536] dump_stack+0x1c/0x5c [ 84.760325][ T5536] should_fail+0x3bc/0x514 [ 84.760975][ T5536] __should_failslab+0xbc/0x10c [ 84.761671][ T5536] should_failslab+0x10/0x28 [ 84.762325][ T5536] slab_pre_alloc_hook+0x64/0xe8 [ 84.763082][ T5536] kmem_cache_alloc_trace+0x98/0x3ec [ 84.763867][ T5536] btrfs_delete_delayed_dir_index+0x22c/0x56c [ 84.764742][ T5536] __btrfs_unlink_inode+0x350/0xaec [ 84.765515][ T5536] btrfs_unlink+0x108/0x258 [ 84.766168][ T5536] vfs_unlink+0x2e0/0x4f4 [ 84.766783][ T5536] do_unlinkat+0x328/0x618 [ 84.767409][ T5536] __arm64_sys_unlinkat+0xe0/0xfc [ 84.768148][ T5536] invoke_syscall+0x98/0x2b0 [ 84.768848][ T5536] el0_svc_common+0x138/0x258 [ 84.769570][ T5536] do_el0_svc+0x58/0x13c [ 84.770214][ T5536] el0_svc+0x78/0x1d0 [ 84.770793][ T5536] el0t_64_sync_handler+0xcc/0xe4 [ 84.771531][ T5536] el0t_64_sync+0x1a0/0x1a4 [ 84.772662][ T5536] ------------[ cut here ]------------ [ 84.773584][ T5536] WARNING: CPU: 0 PID: 5536 at fs/btrfs/inode.c:4182 __btrfs_unlink_inode+0x904/0xaec [ 84.774943][ T5536] Modules linked in: [ 84.775464][ T5536] CPU: 0 PID: 5536 Comm: syz.0.39 Tainted: G W syzkaller #0 [ 84.776694][ T5536] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/03/2025 [ 84.778211][ T5536] pstate: 62400005 (nZCv daif +PAN -UAO +TCO -DIT -SSBS BTYPE=--) [ 84.779343][ T5536] pc : __btrfs_unlink_inode+0x904/0xaec [ 84.780142][ T5536] lr : __btrfs_unlink_inode+0x904/0xaec [ 84.780958][ T5536] sp : ffff800021e27a60 [ 84.781551][ T5536] x29: ffff800021e27b10 x28: ffff0000c2eae000 x27: ffff0000de701010 [ 84.782727][ T5536] x26: 0000000000000100 x25: 00000000fffffff4 x24: ffff0000d26f7840 [ 84.783857][ T5536] x23: ffff7000043c4f54 x22: dfff800000000000 x21: ffff0000e8de3ae0 [ 84.785040][ T5536] x20: ffff0000de7bf5d8 x19: 1fffe0001bcf7ebb x18: 0000000000000001 [ 84.786216][ T5536] x17: 0000000000000000 x16: ffff800008304ad4 x15: 00000000ffffffff [ 84.787364][ T5536] x14: 0000000000000001 x13: 1ffff000043c4e6c x12: 0000000000ff0100 [ 84.788587][ T5536] x11: 0000000000000000 x10: 0000000000000000 x9 : 947a4d592475ff00 [ 84.789723][ T5536] x8 : 947a4d592475ff00 x7 : 0000000000000001 x6 : 0000000000000001 [ 84.791015][ T5536] x5 : ffff800021e27378 x4 : ffff80001436f3e0 x3 : ffff800008304be4 [ 84.792278][ T5536] x2 : 0000000000000001 x1 : 0000000100000000 x0 : 0000000000000026 [ 84.793484][ T5536] Call trace: [ 84.793921][ T5536] __btrfs_unlink_inode+0x904/0xaec [ 84.794698][ T5536] btrfs_unlink+0x108/0x258 [ 84.795325][ T5536] vfs_unlink+0x2e0/0x4f4 [ 84.795966][ T5536] do_unlinkat+0x328/0x618 [ 84.796552][ T5536] __arm64_sys_unlinkat+0xe0/0xfc [ 84.797259][ T5536] invoke_syscall+0x98/0x2b0 [ 84.797925][ T5536] el0_svc_common+0x138/0x258 [ 84.798589][ T5536] do_el0_svc+0x58/0x13c [ 84.799195][ T5536] el0_svc+0x78/0x1d0 [ 84.799805][ T5536] el0t_64_sync_handler+0xcc/0xe4 [ 84.800493][ T5536] el0t_64_sync+0x1a0/0x1a4 [ 84.801119][ T5536] irq event stamp: 79052 [ 84.801681][ T5536] hardirqs last enabled at (79051): [] __up_console_sem+0xb4/0xfc [ 84.803094][ T5536] hardirqs last disabled at (79052): [] el1_dbg+0x24/0x80 [ 84.804360][ T5536] softirqs last enabled at (79032): [] handle_softirqs+0xa40/0xbe4 [ 84.805693][ T5536] softirqs last disabled at (79003): [] __irq_exit_rcu+0x240/0x43c [ 84.807147][ T5536] ---[ end trace ec21c05403b012c0 ]--- [ 84.808346][ T5536] BTRFS: error (device loop0) in __btrfs_unlink_inode:4182: errno=-12 Out of memory [ 84.809853][ T5536] BTRFS info (device loop0): forced readonly [ 84.942375][ T5558] loop0: detected capacity change from 0 to 32768 [ 85.026031][ T5558] BTRFS: device fsid c9fe44da-de57-406a-8241-57ec7d4412cf devid 1 transid 8 /dev/loop0 scanned by syz.0.40 (5558) [ 85.075667][ T5558] BTRFS info (device loop0): using crc32c (crc32c-generic) checksum algorithm [ 85.076989][ T5558] BTRFS info (device loop0): using free space tree [ 85.078521][ T5558] BTRFS info (device loop0): has skinny extents [ 85.086215][ T5558] BTRFS info (device loop0): enabling ssd optimizations [ 85.090195][ T5558] FAULT_INJECTION: forcing a failure. [ 85.090195][ T5558] name failslab, interval 1, probability 0, space 0, times 0 [ 85.092247][ T5558] CPU: 1 PID: 5558 Comm: syz.0.40 Tainted: G W syzkaller #0 [ 85.093509][ T5558] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/03/2025 [ 85.094995][ T5558] Call trace: [ 85.095488][ T5558] dump_backtrace+0x0/0x458 [ 85.096160][ T5558] show_stack+0x2c/0x3c [ 85.096828][ T5558] __dump_stack+0x30/0x40 [ 85.097497][ T5558] dump_stack_lvl+0xf4/0x15c [ 85.098140][ T5558] dump_stack+0x1c/0x5c [ 85.098767][ T5558] should_fail+0x3bc/0x514 [ 85.099393][ T5558] __should_failslab+0xbc/0x10c [ 85.100076][ T5558] should_failslab+0x10/0x28 [ 85.100742][ T5558] slab_pre_alloc_hook+0x64/0xe8 [ 85.101478][ T5558] kmem_cache_alloc_trace+0x98/0x3ec [ 85.102242][ T5558] btrfs_delete_delayed_dir_index+0x22c/0x56c [ 85.103120][ T5558] __btrfs_unlink_inode+0x350/0xaec [ 85.103870][ T5558] btrfs_unlink+0x108/0x258 [ 85.104526][ T5558] vfs_unlink+0x2e0/0x4f4 [ 85.105140][ T5558] do_unlinkat+0x328/0x618 [ 85.105796][ T5558] __arm64_sys_unlinkat+0xe0/0xfc [ 85.106527][ T5558] invoke_syscall+0x98/0x2b0 [ 85.107181][ T5558] el0_svc_common+0x138/0x258 [ 85.107829][ T5558] do_el0_svc+0x58/0x13c [ 85.108418][ T5558] el0_svc+0x78/0x1d0 [ 85.109002][ T5558] el0t_64_sync_handler+0xcc/0xe4 [ 85.109699][ T5558] el0t_64_sync+0x1a0/0x1a4 [ 85.111645][ T5558] ------------[ cut here ]------------ [ 85.112627][ T5558] WARNING: CPU: 1 PID: 5558 at fs/btrfs/inode.c:4182 __btrfs_unlink_inode+0x904/0xaec [ 85.113996][ T5558] Modules linked in: [ 85.114549][ T5558] CPU: 1 PID: 5558 Comm: syz.0.40 Tainted: G W syzkaller #0 [ 85.115804][ T5558] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/03/2025 [ 85.117250][ T5558] pstate: 62400005 (nZCv daif +PAN -UAO +TCO -DIT -SSBS BTYPE=--) [ 85.118385][ T5558] pc : __btrfs_unlink_inode+0x904/0xaec [ 85.119166][ T5558] lr : __btrfs_unlink_inode+0x904/0xaec [ 85.119954][ T5558] sp : ffff800021f47a60 [ 85.120542][ T5558] x29: ffff800021f47b10 x28: ffff0000c1f32000 x27: ffff0000de701410 [ 85.121723][ T5558] x26: 0000000000000100 x25: 00000000fffffff4 x24: ffff0000ca94eb00 [ 85.122909][ T5558] x23: ffff7000043e8f54 x22: dfff800000000000 x21: ffff0000e8de6bf0 [ 85.124108][ T5558] x20: ffff0000de6a5ec8 x19: 1fffe0001bcd4bd9 x18: 0000000000000001 [ 85.125267][ T5558] x17: 0000000000000000 x16: ffff800011254fd8 x15: 00000000ffffffff [ 85.126422][ T5558] x14: 0000000000000001 x13: 1fffe000341f49ab x12: 0000000000ff0100 [ 85.127569][ T5558] x11: 0000000000000000 x10: 0000000000000000 x9 : 18f3ee6ffc35d300 [ 85.128706][ T5558] x8 : 18f3ee6ffc35d300 x7 : 0000000000000001 x6 : 0000000000000001 [ 85.129842][ T5558] x5 : ffff800021f47378 x4 : ffff80001436f3e0 x3 : ffff800008508fa8 [ 85.131042][ T5558] x2 : 0000000000000001 x1 : 0000000100000000 x0 : 0000000000000026 [ 85.132227][ T5558] Call trace: [ 85.132687][ T5558] __btrfs_unlink_inode+0x904/0xaec [ 85.133480][ T5558] btrfs_unlink+0x108/0x258 [ 85.134145][ T5558] vfs_unlink+0x2e0/0x4f4 [ 85.134787][ T5558] do_unlinkat+0x328/0x618 [ 85.135459][ T5558] __arm64_sys_unlinkat+0xe0/0xfc [ 85.136208][ T5558] invoke_syscall+0x98/0x2b0 [ 85.136908][ T5558] el0_svc_common+0x138/0x258 [ 85.137604][ T5558] do_el0_svc+0x58/0x13c [ 85.138225][ T5558] el0_svc+0x78/0x1d0 [ 85.138794][ T5558] el0t_64_sync_handler+0xcc/0xe4 [ 85.139569][ T5558] el0t_64_sync+0x1a0/0x1a4 [ 85.140228][ T5558] irq event stamp: 78986 [ 85.140842][ T5558] hardirqs last enabled at (78985): [] __up_console_sem+0xb4/0xfc [ 85.142229][ T5558] hardirqs last disabled at (78986): [] el1_dbg+0x24/0x80 [ 85.143512][ T5558] softirqs last enabled at (78966): [] handle_softirqs+0xa40/0xbe4 [ 85.144949][ T5558] softirqs last disabled at (78943): [] __irq_exit_rcu+0x240/0x43c [ 85.146333][ T5558] ---[ end trace ec21c05403b012c1 ]--- [ 85.149775][ T5558] BTRFS: error (device loop0) in __btrfs_unlink_inode:4182: errno=-12 Out of memory [ 85.151197][ T5558] BTRFS info (device loop0): forced readonly [ 85.282446][ T5580] loop0: detected capacity change from 0 to 32768 [ 85.286384][ T5580] BTRFS: device fsid c9fe44da-de57-406a-8241-57ec7d4412cf devid 1 transid 8 /dev/loop0 scanned by syz.0.41 (5580) [ 85.290341][ T5580] BTRFS info (device loop0): using crc32c (crc32c-generic) checksum algorithm [ 85.291609][ T5580] BTRFS info (device loop0): using free space tree [ 85.292564][ T5580] BTRFS info (device loop0): has skinny extents [ 85.304935][ T5580] BTRFS info (device loop0): enabling ssd optimizations [ 85.308697][ T5580] FAULT_INJECTION: forcing a failure. [ 85.308697][ T5580] name failslab, interval 1, probability 0, space 0, times 0 [ 85.310699][ T5580] CPU: 1 PID: 5580 Comm: syz.0.41 Tainted: G W syzkaller #0 [ 85.311945][ T5580] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/03/2025 [ 85.313415][ T5580] Call trace: [ 85.313874][ T5580] dump_backtrace+0x0/0x458 [ 85.314522][ T5580] show_stack+0x2c/0x3c [ 85.315120][ T5580] __dump_stack+0x30/0x40 [ 85.315726][ T5580] dump_stack_lvl+0xf4/0x15c [ 85.316365][ T5580] dump_stack+0x1c/0x5c [ 85.317032][ T5580] should_fail+0x3bc/0x514 [ 85.317670][ T5580] __should_failslab+0xbc/0x10c [ 85.318392][ T5580] should_failslab+0x10/0x28 [ 85.319048][ T5580] slab_pre_alloc_hook+0x64/0xe8 [ 85.319776][ T5580] kmem_cache_alloc_trace+0x98/0x3ec [ 85.320578][ T5580] btrfs_delete_delayed_dir_index+0x22c/0x56c [ 85.321474][ T5580] __btrfs_unlink_inode+0x350/0xaec [ 85.322254][ T5580] btrfs_unlink+0x108/0x258 [ 85.322978][ T5580] vfs_unlink+0x2e0/0x4f4 [ 85.323589][ T5580] do_unlinkat+0x328/0x618 [ 85.324243][ T5580] __arm64_sys_unlinkat+0xe0/0xfc [ 85.324995][ T5580] invoke_syscall+0x98/0x2b0 [ 85.325676][ T5580] el0_svc_common+0x138/0x258 [ 85.326429][ T5580] do_el0_svc+0x58/0x13c [ 85.327096][ T5580] el0_svc+0x78/0x1d0 [ 85.327691][ T5580] el0t_64_sync_handler+0xcc/0xe4 [ 85.328451][ T5580] el0t_64_sync+0x1a0/0x1a4 [ 85.330489][ T5580] ------------[ cut here ]------------ [ 85.331471][ T5580] WARNING: CPU: 1 PID: 5580 at fs/btrfs/inode.c:4182 __btrfs_unlink_inode+0x904/0xaec [ 85.332928][ T5580] Modules linked in: [ 85.333519][ T5580] CPU: 1 PID: 5580 Comm: syz.0.41 Tainted: G W syzkaller #0 [ 85.334814][ T5580] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/03/2025 [ 85.336344][ T5580] pstate: 62400005 (nZCv daif +PAN -UAO +TCO -DIT -SSBS BTYPE=--) [ 85.337453][ T5580] pc : __btrfs_unlink_inode+0x904/0xaec [ 85.338278][ T5580] lr : __btrfs_unlink_inode+0x904/0xaec [ 85.339094][ T5580] sp : ffff800021f47a60 [ 85.339669][ T5580] x29: ffff800021f47b10 x28: ffff0000c8292000 x27: ffff0000e8d99810 [ 85.340821][ T5580] x26: 0000000000000100 x25: 00000000fffffff4 x24: ffff0000e7d0cb00 [ 85.341998][ T5580] x23: ffff7000043e8f54 x22: dfff800000000000 x21: ffff0000e8d23110 [ 85.343193][ T5580] x20: ffff0000de6a5478 x19: 1fffe0001bcd4a8f x18: 0000000000000001 [ 85.344441][ T5580] x17: 0000000000000000 x16: ffff800011254fd8 x15: 00000000ffffffff [ 85.345581][ T5580] x14: 0000000000000001 x13: 1fffe000341f49ab x12: 0000000000ff0100 [ 85.346766][ T5580] x11: 0000000000000000 x10: 0000000000000000 x9 : a20075a9342e8c00 [ 85.347942][ T5580] x8 : a20075a9342e8c00 x7 : 0000000000000001 x6 : 0000000000000001 [ 85.349057][ T5580] x5 : ffff800021f47378 x4 : ffff80001436f3e0 x3 : ffff800008508fa8 [ 85.350237][ T5580] x2 : 0000000000000001 x1 : 0000000100000000 x0 : 0000000000000026 [ 85.351455][ T5580] Call trace: [ 85.351937][ T5580] __btrfs_unlink_inode+0x904/0xaec [ 85.352685][ T5580] btrfs_unlink+0x108/0x258 [ 85.353340][ T5580] vfs_unlink+0x2e0/0x4f4 [ 85.354025][ T5580] do_unlinkat+0x328/0x618 [ 85.354679][ T5580] __arm64_sys_unlinkat+0xe0/0xfc [ 85.355428][ T5580] invoke_syscall+0x98/0x2b0 [ 85.356083][ T5580] el0_svc_common+0x138/0x258 [ 85.356754][ T5580] do_el0_svc+0x58/0x13c [ 85.357368][ T5580] el0_svc+0x78/0x1d0 [ 85.357961][ T5580] el0t_64_sync_handler+0xcc/0xe4 [ 85.358708][ T5580] el0t_64_sync+0x1a0/0x1a4 [ 85.359356][ T5580] irq event stamp: 78852 [ 85.359973][ T5580] hardirqs last enabled at (78851): [] __up_console_sem+0xb4/0xfc [ 85.361389][ T5580] hardirqs last disabled at (78852): [] el1_dbg+0x24/0x80 [ 85.362682][ T5580] softirqs last enabled at (78832): [] handle_softirqs+0xa40/0xbe4 [ 85.364177][ T5580] softirqs last disabled at (78815): [] __irq_exit_rcu+0x240/0x43c [ 85.365647][ T5580] ---[ end trace ec21c05403b012c2 ]--- [ 85.368399][ T5580] BTRFS: error (device loop0) in __btrfs_unlink_inode:4182: errno=-12 Out of memory [ 85.369957][ T5580] BTRFS info (device loop0): forced readonly [ 85.515817][ T5602] BTRFS: device fsid c9fe44da-de57-406a-8241-57ec7d4412cf devid 1 transid 8 /dev/loop0 scanned by syz.0.42 (5602) [ 85.520299][ T5602] BTRFS info (device loop0): using crc32c (crc32c-generic) checksum algorithm [ 85.521692][ T5602] BTRFS info (device loop0): using free space tree [ 85.522691][ T5602] BTRFS info (device loop0): has skinny extents [ 85.530552][ T5602] BTRFS info (device loop0): enabling ssd optimizations [ 85.534503][ T5602] FAULT_INJECTION: forcing a failure. [ 85.534503][ T5602] name failslab, interval 1, probability 0, space 0, times 0 [ 85.537817][ T5602] CPU: 1 PID: 5602 Comm: syz.0.42 Tainted: G W syzkaller #0 [ 85.539212][ T5602] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/03/2025 [ 85.540689][ T5602] Call trace: [ 85.541164][ T5602] dump_backtrace+0x0/0x458 [ 85.541820][ T5602] show_stack+0x2c/0x3c [ 85.542462][ T5602] __dump_stack+0x30/0x40 [ 85.543104][ T5602] dump_stack_lvl+0xf4/0x15c [ 85.543767][ T5602] dump_stack+0x1c/0x5c [ 85.544336][ T5602] should_fail+0x3bc/0x514 [ 85.544944][ T5602] __should_failslab+0xbc/0x10c [ 85.545665][ T5602] should_failslab+0x10/0x28 [ 85.546422][ T5602] slab_pre_alloc_hook+0x64/0xe8 [ 85.547182][ T5602] kmem_cache_alloc_trace+0x98/0x3ec [ 85.547921][ T5602] btrfs_delete_delayed_dir_index+0x22c/0x56c [ 85.548794][ T5602] __btrfs_unlink_inode+0x350/0xaec [ 85.549609][ T5602] btrfs_unlink+0x108/0x258 [ 85.550341][ T5602] vfs_unlink+0x2e0/0x4f4 [ 85.550964][ T5602] do_unlinkat+0x328/0x618 [ 85.551690][ T5602] __arm64_sys_unlinkat+0xe0/0xfc [ 85.552484][ T5602] invoke_syscall+0x98/0x2b0 [ 85.553212][ T5602] el0_svc_common+0x138/0x258 [ 85.553912][ T5602] do_el0_svc+0x58/0x13c [ 85.554586][ T5602] el0_svc+0x78/0x1d0 [ 85.555184][ T5602] el0t_64_sync_handler+0xcc/0xe4 [ 85.555954][ T5602] el0t_64_sync+0x1a0/0x1a4 [ 85.558547][ T5602] ------------[ cut here ]------------ [ 85.559456][ T5602] WARNING: CPU: 1 PID: 5602 at fs/btrfs/inode.c:4182 __btrfs_unlink_inode+0x904/0xaec [ 85.560762][ T5602] Modules linked in: [ 85.561292][ T5602] CPU: 1 PID: 5602 Comm: syz.0.42 Tainted: G W syzkaller #0 [ 85.562551][ T5602] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/03/2025 [ 85.563993][ T5602] pstate: 62400005 (nZCv daif +PAN -UAO +TCO -DIT -SSBS BTYPE=--) [ 85.565086][ T5602] pc : __btrfs_unlink_inode+0x904/0xaec [ 85.565864][ T5602] lr : __btrfs_unlink_inode+0x904/0xaec [ 85.566695][ T5602] sp : ffff800021fc7a60 [ 85.567285][ T5602] x29: ffff800021fc7b10 x28: ffff0000c1b08000 x27: ffff0000e8d9a410 [ 85.568421][ T5602] x26: 0000000000000100 x25: 00000000fffffff4 x24: ffff0000c789b000 [ 85.569602][ T5602] x23: ffff7000043f8f54 x22: dfff800000000000 x21: ffff0000e8d213a0 [ 85.570764][ T5602] x20: ffff0000de6a5f78 x19: 1fffe0001bcd4bef x18: 0000000000000001 [ 85.571930][ T5602] x17: 0000000000000000 x16: ffff800011254fd8 x15: 00000000ffffffff [ 85.573147][ T5602] x14: 0000000000000001 x13: 1fffe000341f49ab x12: 0000000000ff0100 [ 85.574307][ T5602] x11: 0000000000000000 x10: 0000000000000000 x9 : 1e78f57078540f00 [ 85.575517][ T5602] x8 : 1e78f57078540f00 x7 : 0000000000000001 x6 : 0000000000000001 [ 85.576787][ T5602] x5 : ffff800021fc7378 x4 : ffff80001436f3e0 x3 : ffff800008508fa8 [ 85.578017][ T5602] x2 : 0000000000000001 x1 : 0000000100000000 x0 : 0000000000000026 [ 85.579222][ T5602] Call trace: [ 85.579739][ T5602] __btrfs_unlink_inode+0x904/0xaec [ 85.580540][ T5602] btrfs_unlink+0x108/0x258 [ 85.581267][ T5602] vfs_unlink+0x2e0/0x4f4 [ 85.581862][ T5602] do_unlinkat+0x328/0x618 [ 85.582506][ T5602] __arm64_sys_unlinkat+0xe0/0xfc [ 85.583288][ T5602] invoke_syscall+0x98/0x2b0 [ 85.584016][ T5602] el0_svc_common+0x138/0x258 [ 85.584695][ T5602] do_el0_svc+0x58/0x13c [ 85.585248][ T5602] el0_svc+0x78/0x1d0 [ 85.585821][ T5602] el0t_64_sync_handler+0xcc/0xe4 [ 85.586559][ T5602] el0t_64_sync+0x1a0/0x1a4 [ 85.587332][ T5602] irq event stamp: 79114 [ 85.588049][ T5602] hardirqs last enabled at (79113): [] __up_console_sem+0xb4/0xfc [ 85.589581][ T5602] hardirqs last disabled at (79114): [] el1_dbg+0x24/0x80 [ 85.590960][ T5602] softirqs last enabled at (79094): [] handle_softirqs+0xa40/0xbe4 [ 85.592453][ T5602] softirqs last disabled at (79053): [] __irq_exit_rcu+0x240/0x43c [ 85.593872][ T5602] ---[ end trace ec21c05403b012c3 ]--- [ 85.596645][ T5602] BTRFS: error (device loop0) in __btrfs_unlink_inode:4182: errno=-12 Out of memory [ 85.598215][ T5602] BTRFS info (device loop0): forced readonly [ 85.820269][ T5624] BTRFS: device fsid c9fe44da-de57-406a-8241-57ec7d4412cf devid 1 transid 8 /dev/loop0 scanned by syz.0.43 (5624) [ 85.823338][ T5624] BTRFS info (device loop0): using crc32c (crc32c-generic) checksum algorithm [ 85.825035][ T5624] BTRFS info (device loop0): using free space tree [ 85.826053][ T5624] BTRFS info (device loop0): has skinny extents [ 85.833094][ T5624] BTRFS info (device loop0): enabling ssd optimizations [ 85.837963][ T5624] FAULT_INJECTION: forcing a failure. [ 85.837963][ T5624] name failslab, interval 1, probability 0, space 0, times 0 [ 85.840003][ T5624] CPU: 1 PID: 5624 Comm: syz.0.43 Tainted: G W syzkaller #0 [ 85.841327][ T5624] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/03/2025 [ 85.842893][ T5624] Call trace: [ 85.843421][ T5624] dump_backtrace+0x0/0x458 [ 85.844137][ T5624] show_stack+0x2c/0x3c [ 85.844737][ T5624] __dump_stack+0x30/0x40 [ 85.845388][ T5624] dump_stack_lvl+0xf4/0x15c [ 85.846126][ T5624] dump_stack+0x1c/0x5c [ 85.846748][ T5624] should_fail+0x3bc/0x514 [ 85.847422][ T5624] __should_failslab+0xbc/0x10c [ 85.848163][ T5624] should_failslab+0x10/0x28 [ 85.848849][ T5624] slab_pre_alloc_hook+0x64/0xe8 [ 85.849600][ T5624] kmem_cache_alloc_trace+0x98/0x3ec [ 85.850383][ T5624] btrfs_delete_delayed_dir_index+0x22c/0x56c [ 85.851329][ T5624] __btrfs_unlink_inode+0x350/0xaec [ 85.852126][ T5624] btrfs_unlink+0x108/0x258 [ 85.852770][ T5624] vfs_unlink+0x2e0/0x4f4 [ 85.853412][ T5624] do_unlinkat+0x328/0x618 [ 85.854103][ T5624] __arm64_sys_unlinkat+0xe0/0xfc [ 85.854876][ T5624] invoke_syscall+0x98/0x2b0 [ 85.855582][ T5624] el0_svc_common+0x138/0x258 [ 85.856248][ T5624] do_el0_svc+0x58/0x13c [ 85.856925][ T5624] el0_svc+0x78/0x1d0 [ 85.857503][ T5624] el0t_64_sync_handler+0xcc/0xe4 [ 85.858233][ T5624] el0t_64_sync+0x1a0/0x1a4 [ 85.861280][ T5624] ------------[ cut here ]------------ [ 85.862309][ T5624] WARNING: CPU: 1 PID: 5624 at fs/btrfs/inode.c:4182 __btrfs_unlink_inode+0x904/0xaec [ 85.863711][ T5624] Modules linked in: [ 85.864343][ T5624] CPU: 1 PID: 5624 Comm: syz.0.43 Tainted: G W syzkaller #0 [ 85.865535][ T5624] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/03/2025 [ 85.866992][ T5624] pstate: 62400005 (nZCv daif +PAN -UAO +TCO -DIT -SSBS BTYPE=--) [ 85.868135][ T5624] pc : __btrfs_unlink_inode+0x904/0xaec [ 85.869009][ T5624] lr : __btrfs_unlink_inode+0x904/0xaec [ 85.869848][ T5624] sp : ffff800022137a60 [ 85.870477][ T5624] x29: ffff800022137b10 x28: ffff0000d5b14000 x27: ffff0000e8d9a810 [ 85.871679][ T5624] x26: 0000000000000100 x25: 00000000fffffff4 x24: ffff0000d8f5aa50 [ 85.872845][ T5624] x23: ffff700004426f54 x22: dfff800000000000 x21: ffff0000e27c8000 [ 85.874053][ T5624] x20: ffff0000de6a5058 x19: 1fffe0001bcd4a0b x18: 0000000000000001 [ 85.875268][ T5624] x17: 0000000000000000 x16: ffff800011254fd8 x15: 00000000ffffffff [ 85.876399][ T5624] x14: 0000000000000001 x13: 1fffe000341f49ab x12: 0000000000ff0100 [ 85.877543][ T5624] x11: 0000000000000000 x10: 0000000000000000 x9 : 65d708159f527000 [ 85.878753][ T5624] x8 : 65d708159f527000 x7 : 0000000000000001 x6 : 0000000000000001 [ 85.879972][ T5624] x5 : ffff800022137378 x4 : ffff80001436f3e0 x3 : ffff800008508fa8 [ 85.881155][ T5624] x2 : 0000000000000001 x1 : 0000000100000000 x0 : 0000000000000026 [ 85.882322][ T5624] Call trace: [ 85.882777][ T5624] __btrfs_unlink_inode+0x904/0xaec [ 85.883548][ T5624] btrfs_unlink+0x108/0x258 [ 85.884246][ T5624] vfs_unlink+0x2e0/0x4f4 [ 85.884937][ T5624] do_unlinkat+0x328/0x618 [ 85.885563][ T5624] __arm64_sys_unlinkat+0xe0/0xfc [ 85.886346][ T5624] invoke_syscall+0x98/0x2b0 [ 85.887032][ T5624] el0_svc_common+0x138/0x258 [ 85.887692][ T5624] do_el0_svc+0x58/0x13c [ 85.888283][ T5624] el0_svc+0x78/0x1d0 [ 85.888818][ T5624] el0t_64_sync_handler+0xcc/0xe4 [ 85.889565][ T5624] el0t_64_sync+0x1a0/0x1a4 [ 85.890264][ T5624] irq event stamp: 79250 [ 85.890829][ T5624] hardirqs last enabled at (79249): [] __up_console_sem+0xb4/0xfc [ 85.892167][ T5624] hardirqs last disabled at (79250): [] el1_dbg+0x24/0x80 [ 85.893348][ T5624] softirqs last enabled at (79230): [] handle_softirqs+0xa40/0xbe4 [ 85.894663][ T5624] softirqs last disabled at (79189): [] __irq_exit_rcu+0x240/0x43c [ 85.896086][ T5624] ---[ end trace ec21c05403b012c4 ]--- [ 85.898856][ T5624] BTRFS: error (device loop0) in __btrfs_unlink_inode:4182: errno=-12 Out of memory [ 85.900390][ T5624] BTRFS info (device loop0): forced readonly [ 86.116333][ T5646] BTRFS: device fsid c9fe44da-de57-406a-8241-57ec7d4412cf devid 1 transid 8 /dev/loop0 scanned by syz.0.44 (5646) [ 86.119551][ T5646] BTRFS info (device loop0): using crc32c (crc32c-generic) checksum algorithm [ 86.121005][ T5646] BTRFS info (device loop0): using free space tree [ 86.122151][ T5646] BTRFS info (device loop0): has skinny extents [ 86.148575][ T5646] BTRFS info (device loop0): enabling ssd optimizations [ 86.152504][ T5646] FAULT_INJECTION: forcing a failure. [ 86.152504][ T5646] name failslab, interval 1, probability 0, space 0, times 0 [ 86.155013][ T5646] CPU: 1 PID: 5646 Comm: syz.0.44 Tainted: G W syzkaller #0 [ 86.156323][ T5646] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/03/2025 [ 86.157736][ T5646] Call trace: [ 86.158201][ T5646] dump_backtrace+0x0/0x458 [ 86.158837][ T5646] show_stack+0x2c/0x3c [ 86.159418][ T5646] __dump_stack+0x30/0x40 [ 86.160001][ T5646] dump_stack_lvl+0xf4/0x15c [ 86.160630][ T5646] dump_stack+0x1c/0x5c [ 86.161231][ T5646] should_fail+0x3bc/0x514 [ 86.161915][ T5646] __should_failslab+0xbc/0x10c [ 86.162711][ T5646] should_failslab+0x10/0x28 [ 86.163457][ T5646] slab_pre_alloc_hook+0x64/0xe8 [ 86.164221][ T5646] kmem_cache_alloc_trace+0x98/0x3ec [ 86.165058][ T5646] btrfs_delete_delayed_dir_index+0x22c/0x56c [ 86.165983][ T5646] __btrfs_unlink_inode+0x350/0xaec [ 86.166828][ T5646] btrfs_unlink+0x108/0x258 [ 86.167539][ T5646] vfs_unlink+0x2e0/0x4f4 [ 86.168160][ T5646] do_unlinkat+0x328/0x618 [ 86.168832][ T5646] __arm64_sys_unlinkat+0xe0/0xfc [ 86.169568][ T5646] invoke_syscall+0x98/0x2b0 [ 86.170268][ T5646] el0_svc_common+0x138/0x258 [ 86.170975][ T5646] do_el0_svc+0x58/0x13c [ 86.171566][ T5646] el0_svc+0x78/0x1d0 [ 86.172145][ T5646] el0t_64_sync_handler+0xcc/0xe4 [ 86.172892][ T5646] el0t_64_sync+0x1a0/0x1a4 [ 86.175978][ T5646] ------------[ cut here ]------------ [ 86.176956][ T5646] WARNING: CPU: 1 PID: 5646 at fs/btrfs/inode.c:4182 __btrfs_unlink_inode+0x904/0xaec [ 86.178302][ T5646] Modules linked in: [ 86.178843][ T5646] CPU: 1 PID: 5646 Comm: syz.0.44 Tainted: G W syzkaller #0 [ 86.180142][ T5646] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/03/2025 [ 86.181562][ T5646] pstate: 62400005 (nZCv daif +PAN -UAO +TCO -DIT -SSBS BTYPE=--) [ 86.182715][ T5646] pc : __btrfs_unlink_inode+0x904/0xaec [ 86.183525][ T5646] lr : __btrfs_unlink_inode+0x904/0xaec [ 86.184249][ T5646] sp : ffff800022317a60 [ 86.184839][ T5646] x29: ffff800022317b10 x28: ffff0000d7850000 x27: ffff0000e8d9ac10 [ 86.186007][ T5646] x26: 0000000000000100 x25: 00000000fffffff4 x24: ffff0000cb123bb0 [ 86.187192][ T5646] x23: ffff700004462f54 x22: dfff800000000000 x21: ffff0000e27ca740 [ 86.188377][ T5646] x20: ffff0000de6a51b8 x19: 1fffe0001bcd4a37 x18: 0000000000000001 [ 86.189574][ T5646] x17: 0000000000000000 x16: ffff800011254fd8 x15: 00000000ffffffff [ 86.190769][ T5646] x14: 0000000000000001 x13: 1fffe000341f49ab x12: 0000000000ff0100 [ 86.191934][ T5646] x11: 0000000000000000 x10: 0000000000000000 x9 : e1c6fcabcdbc5000 [ 86.193033][ T5646] x8 : e1c6fcabcdbc5000 x7 : 0000000000000001 x6 : 0000000000000001 [ 86.194172][ T5646] x5 : ffff800022317378 x4 : ffff80001436f3e0 x3 : ffff800008508fa8 [ 86.195381][ T5646] x2 : 0000000000000001 x1 : 0000000100000000 x0 : 0000000000000026 [ 86.196522][ T5646] Call trace: [ 86.196981][ T5646] __btrfs_unlink_inode+0x904/0xaec [ 86.197707][ T5646] btrfs_unlink+0x108/0x258 [ 86.198333][ T5646] vfs_unlink+0x2e0/0x4f4 [ 86.199006][ T5646] do_unlinkat+0x328/0x618 [ 86.199654][ T5646] __arm64_sys_unlinkat+0xe0/0xfc [ 86.200373][ T5646] invoke_syscall+0x98/0x2b0 [ 86.201040][ T5646] el0_svc_common+0x138/0x258 [ 86.201689][ T5646] do_el0_svc+0x58/0x13c [ 86.202306][ T5646] el0_svc+0x78/0x1d0 [ 86.202887][ T5646] el0t_64_sync_handler+0xcc/0xe4 [ 86.203596][ T5646] el0t_64_sync+0x1a0/0x1a4 [ 86.204207][ T5646] irq event stamp: 78886 [ 86.204784][ T5646] hardirqs last enabled at (78885): [] __up_console_sem+0xb4/0xfc [ 86.206107][ T5646] hardirqs last disabled at (78886): [] el1_dbg+0x24/0x80 [ 86.207404][ T5646] softirqs last enabled at (78866): [] handle_softirqs+0xa40/0xbe4 [ 86.208895][ T5646] softirqs last disabled at (78829): [] __irq_exit_rcu+0x240/0x43c [ 86.210275][ T5646] ---[ end trace ec21c05403b012c5 ]--- [ 86.213052][ T5646] BTRFS: error (device loop0) in __btrfs_unlink_inode:4182: errno=-12 Out of memory [ 86.214616][ T5646] BTRFS info (device loop0): forced readonly [ 86.436775][ T5668] BTRFS: device fsid c9fe44da-de57-406a-8241-57ec7d4412cf devid 1 transid 8 /dev/loop0 scanned by syz.0.45 (5668) [ 86.442235][ T5668] BTRFS info (device loop0): using crc32c (crc32c-generic) checksum algorithm [ 86.443670][ T5668] BTRFS info (device loop0): using free space tree [ 86.444693][ T5668] BTRFS info (device loop0): has skinny extents [ 86.455060][ T5668] BTRFS info (device loop0): enabling ssd optimizations [ 86.460466][ T5668] FAULT_INJECTION: forcing a failure. [ 86.460466][ T5668] name failslab, interval 1, probability 0, space 0, times 0 [ 86.462620][ T5668] CPU: 1 PID: 5668 Comm: syz.0.45 Tainted: G W syzkaller #0 [ 86.463939][ T5668] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/03/2025 [ 86.465431][ T5668] Call trace: [ 86.465889][ T5668] dump_backtrace+0x0/0x458 [ 86.466569][ T5668] show_stack+0x2c/0x3c [ 86.467187][ T5668] __dump_stack+0x30/0x40 [ 86.467862][ T5668] dump_stack_lvl+0xf4/0x15c [ 86.468560][ T5668] dump_stack+0x1c/0x5c [ 86.469159][ T5668] should_fail+0x3bc/0x514 [ 86.469789][ T5668] __should_failslab+0xbc/0x10c [ 86.470474][ T5668] should_failslab+0x10/0x28 [ 86.471133][ T5668] slab_pre_alloc_hook+0x64/0xe8 [ 86.471842][ T5668] kmem_cache_alloc_trace+0x98/0x3ec [ 86.472646][ T5668] btrfs_delete_delayed_dir_index+0x22c/0x56c [ 86.473523][ T5668] __btrfs_unlink_inode+0x350/0xaec [ 86.474309][ T5668] btrfs_unlink+0x108/0x258 [ 86.475057][ T5668] vfs_unlink+0x2e0/0x4f4 [ 86.475660][ T5668] do_unlinkat+0x328/0x618 [ 86.476316][ T5668] __arm64_sys_unlinkat+0xe0/0xfc [ 86.477065][ T5668] invoke_syscall+0x98/0x2b0 [ 86.477708][ T5668] el0_svc_common+0x138/0x258 [ 86.478366][ T5668] do_el0_svc+0x58/0x13c [ 86.478979][ T5668] el0_svc+0x78/0x1d0 [ 86.479594][ T5668] el0t_64_sync_handler+0xcc/0xe4 [ 86.480354][ T5668] el0t_64_sync+0x1a0/0x1a4 [ 86.482410][ T5668] ------------[ cut here ]------------ [ 86.483424][ T5668] WARNING: CPU: 1 PID: 5668 at fs/btrfs/inode.c:4182 __btrfs_unlink_inode+0x904/0xaec [ 86.485022][ T5668] Modules linked in: [ 86.485672][ T5668] CPU: 1 PID: 5668 Comm: syz.0.45 Tainted: G W syzkaller #0 [ 86.486987][ T5668] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/03/2025 [ 86.488420][ T5668] pstate: 62400005 (nZCv daif +PAN -UAO +TCO -DIT -SSBS BTYPE=--) [ 86.489632][ T5668] pc : __btrfs_unlink_inode+0x904/0xaec [ 86.490430][ T5668] lr : __btrfs_unlink_inode+0x904/0xaec [ 86.491220][ T5668] sp : ffff800022317a60 [ 86.491773][ T5668] x29: ffff800022317b10 x28: ffff0000e7fbc000 x27: ffff0000e8d9b010 [ 86.492942][ T5668] x26: 0000000000000100 x25: 00000000fffffff4 x24: ffff0000c8eba420 [ 86.494084][ T5668] x23: ffff700004462f54 x22: dfff800000000000 x21: ffff0000e27cc4b0 [ 86.495286][ T5668] x20: ffff0000de6a5aa8 x19: 1fffe0001bcd4b55 x18: 0000000000000001 [ 86.496429][ T5668] x17: 0000000000000000 x16: ffff800011254fd8 x15: 00000000ffffffff [ 86.497593][ T5668] x14: 0000000000000001 x13: 1fffe000341f49ab x12: 0000000000ff0100 [ 86.498857][ T5668] x11: 0000000000000000 x10: 0000000000000000 x9 : 5664eda9d09ea100 [ 86.499974][ T5668] x8 : 5664eda9d09ea100 x7 : 0000000000000001 x6 : 0000000000000001 [ 86.501145][ T5668] x5 : ffff800022317378 x4 : ffff80001436f3e0 x3 : ffff800008508fa8 [ 86.502321][ T5668] x2 : 0000000000000001 x1 : 0000000100000000 x0 : 0000000000000026 [ 86.503493][ T5668] Call trace: [ 86.503959][ T5668] __btrfs_unlink_inode+0x904/0xaec [ 86.504722][ T5668] btrfs_unlink+0x108/0x258 [ 86.505362][ T5668] vfs_unlink+0x2e0/0x4f4 [ 86.506004][ T5668] do_unlinkat+0x328/0x618 [ 86.506627][ T5668] __arm64_sys_unlinkat+0xe0/0xfc [ 86.507317][ T5668] invoke_syscall+0x98/0x2b0 [ 86.507970][ T5668] el0_svc_common+0x138/0x258 [ 86.508667][ T5668] do_el0_svc+0x58/0x13c [ 86.509279][ T5668] el0_svc+0x78/0x1d0 [ 86.509833][ T5668] el0t_64_sync_handler+0xcc/0xe4 [ 86.510585][ T5668] el0t_64_sync+0x1a0/0x1a4 [ 86.511236][ T5668] irq event stamp: 78774 [ 86.511814][ T5668] hardirqs last enabled at (78773): [] __up_console_sem+0xb4/0xfc [ 86.513244][ T5668] hardirqs last disabled at (78774): [] el1_dbg+0x24/0x80 [ 86.514593][ T5668] softirqs last enabled at (78754): [] handle_softirqs+0xa40/0xbe4 [ 86.516007][ T5668] softirqs last disabled at (78723): [] __irq_exit_rcu+0x240/0x43c [ 86.517366][ T5668] ---[ end trace ec21c05403b012c6 ]--- [ 86.552546][ T5668] BTRFS: error (device loop0) in __btrfs_unlink_inode:4182: errno=-12 Out of memory [ 86.553996][ T5668] BTRFS info (device loop0): forced readonly [ 86.839703][ T5690] BTRFS: device fsid c9fe44da-de57-406a-8241-57ec7d4412cf devid 1 transid 8 /dev/loop0 scanned by syz.0.46 (5690) [ 86.845157][ T5690] BTRFS info (device loop0): using crc32c (crc32c-generic) checksum algorithm [ 86.846883][ T5690] BTRFS info (device loop0): using free space tree [ 86.847970][ T5690] BTRFS info (device loop0): has skinny extents [ 86.859817][ T5690] BTRFS info (device loop0): enabling ssd optimizations [ 86.864121][ T5690] FAULT_INJECTION: forcing a failure. [ 86.864121][ T5690] name failslab, interval 1, probability 0, space 0, times 0 [ 86.868100][ T5690] CPU: 1 PID: 5690 Comm: syz.0.46 Tainted: G W syzkaller #0 [ 86.869430][ T5690] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/03/2025 [ 86.871029][ T5690] Call trace: [ 86.871551][ T5690] dump_backtrace+0x0/0x458 [ 86.872217][ T5690] show_stack+0x2c/0x3c [ 86.872912][ T5690] __dump_stack+0x30/0x40 [ 86.873598][ T5690] dump_stack_lvl+0xf4/0x15c [ 86.874332][ T5690] dump_stack+0x1c/0x5c [ 86.874955][ T5690] should_fail+0x3bc/0x514 [ 86.875649][ T5690] __should_failslab+0xbc/0x10c [ 86.876413][ T5690] should_failslab+0x10/0x28 [ 86.877079][ T5690] slab_pre_alloc_hook+0x64/0xe8 [ 86.877805][ T5690] kmem_cache_alloc_trace+0x98/0x3ec [ 86.878567][ T5690] btrfs_delete_delayed_dir_index+0x22c/0x56c [ 86.879469][ T5690] __btrfs_unlink_inode+0x350/0xaec [ 86.880142][ T5690] btrfs_unlink+0x108/0x258 [ 86.880849][ T5690] vfs_unlink+0x2e0/0x4f4 [ 86.881483][ T5690] do_unlinkat+0x328/0x618 [ 86.882155][ T5690] __arm64_sys_unlinkat+0xe0/0xfc [ 86.882887][ T5690] invoke_syscall+0x98/0x2b0 [ 86.883534][ T5690] el0_svc_common+0x138/0x258 [ 86.884347][ T5690] do_el0_svc+0x58/0x13c [ 86.885021][ T5690] el0_svc+0x78/0x1d0 [ 86.885654][ T5690] el0t_64_sync_handler+0xcc/0xe4 [ 86.886425][ T5690] el0t_64_sync+0x1a0/0x1a4 [ 86.925551][ T5690] ------------[ cut here ]------------ [ 86.926553][ T5690] WARNING: CPU: 1 PID: 5690 at fs/btrfs/inode.c:4182 __btrfs_unlink_inode+0x904/0xaec [ 86.928040][ T5690] Modules linked in: [ 86.928653][ T5690] CPU: 1 PID: 5690 Comm: syz.0.46 Tainted: G W syzkaller #0 [ 86.929906][ T5690] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/03/2025 [ 86.931355][ T5690] pstate: 62400005 (nZCv daif +PAN -UAO +TCO -DIT -SSBS BTYPE=--) [ 86.932453][ T5690] pc : __btrfs_unlink_inode+0x904/0xaec [ 86.933325][ T5690] lr : __btrfs_unlink_inode+0x904/0xaec [ 86.934164][ T5690] sp : ffff800022677a60 [ 86.934818][ T5690] x29: ffff800022677b10 x28: ffff0000cfe9e000 x27: ffff0000e8d9b410 [ 86.935994][ T5690] x26: 0000000000000100 x25: 00000000fffffff4 x24: ffff0000cba64a50 [ 86.937184][ T5690] x23: ffff7000044cef54 x22: dfff800000000000 x21: ffff0000e27cebf0 [ 86.938467][ T5690] x20: ffff0000de6a5738 x19: 1fffe0001bcd4ae7 x18: 0000000000000001 [ 86.939692][ T5690] x17: 0000000000000000 x16: ffff800011254fd8 x15: 00000000ffffffff [ 86.940920][ T5690] x14: 0000000000000001 x13: 1fffe000341f49ab x12: 0000000000ff0100 [ 86.942132][ T5690] x11: 0000000000000000 x10: 0000000000000000 x9 : 18367fbef18f1a00 [ 86.943410][ T5690] x8 : 18367fbef18f1a00 x7 : 0000000000000001 x6 : 0000000000000001 [ 86.944626][ T5690] x5 : ffff800022677378 x4 : ffff80001436f3e0 x3 : ffff800008508fa8 [ 86.945758][ T5690] x2 : 0000000000000001 x1 : 0000000100000000 x0 : 0000000000000026 [ 86.946936][ T5690] Call trace: [ 86.947470][ T5690] __btrfs_unlink_inode+0x904/0xaec [ 86.948276][ T5690] btrfs_unlink+0x108/0x258 [ 86.948959][ T5690] vfs_unlink+0x2e0/0x4f4 [ 86.949616][ T5690] do_unlinkat+0x328/0x618 [ 86.950255][ T5690] __arm64_sys_unlinkat+0xe0/0xfc [ 86.951064][ T5690] invoke_syscall+0x98/0x2b0 [ 86.951828][ T5690] el0_svc_common+0x138/0x258 [ 86.952517][ T5690] do_el0_svc+0x58/0x13c [ 86.953156][ T5690] el0_svc+0x78/0x1d0 [ 86.953728][ T5690] el0t_64_sync_handler+0xcc/0xe4 [ 86.954471][ T5690] el0t_64_sync+0x1a0/0x1a4 [ 86.955145][ T5690] irq event stamp: 79098 [ 86.955797][ T5690] hardirqs last enabled at (79097): [] __up_console_sem+0xb4/0xfc [ 86.957199][ T5690] hardirqs last disabled at (79098): [] el1_dbg+0x24/0x80 [ 86.958439][ T5690] softirqs last enabled at (79078): [] handle_softirqs+0xa40/0xbe4 [ 86.959794][ T5690] softirqs last disabled at (79033): [] __irq_exit_rcu+0x240/0x43c [ 86.961246][ T5690] ---[ end trace ec21c05403b012c7 ]--- [ 86.962753][ T5690] BTRFS: error (device loop0) in __btrfs_unlink_inode:4182: errno=-12 Out of memory [ 86.964266][ T5690] BTRFS info (device loop0): forced readonly [ 87.186608][ T5712] BTRFS: device fsid c9fe44da-de57-406a-8241-57ec7d4412cf devid 1 transid 8 /dev/loop0 scanned by syz.0.47 (5712) [ 87.193593][ T5712] BTRFS info (device loop0): using crc32c (crc32c-generic) checksum algorithm [ 87.195125][ T5712] BTRFS info (device loop0): using free space tree [ 87.196064][ T5712] BTRFS info (device loop0): has skinny extents [ 87.203309][ T5712] BTRFS info (device loop0): enabling ssd optimizations [ 87.211318][ T5712] FAULT_INJECTION: forcing a failure. [ 87.211318][ T5712] name failslab, interval 1, probability 0, space 0, times 0 [ 87.213422][ T5712] CPU: 0 PID: 5712 Comm: syz.0.47 Tainted: G W syzkaller #0 [ 87.214722][ T5712] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/03/2025 [ 87.216234][ T5712] Call trace: [ 87.216710][ T5712] dump_backtrace+0x0/0x458 [ 87.217332][ T5712] show_stack+0x2c/0x3c [ 87.217960][ T5712] __dump_stack+0x30/0x40 [ 87.218577][ T5712] dump_stack_lvl+0xf4/0x15c [ 87.219227][ T5712] dump_stack+0x1c/0x5c [ 87.219813][ T5712] should_fail+0x3bc/0x514 [ 87.220455][ T5712] __should_failslab+0xbc/0x10c [ 87.221176][ T5712] should_failslab+0x10/0x28 [ 87.221830][ T5712] slab_pre_alloc_hook+0x64/0xe8 [ 87.222568][ T5712] kmem_cache_alloc_trace+0x98/0x3ec [ 87.223359][ T5712] btrfs_delete_delayed_dir_index+0x22c/0x56c [ 87.224249][ T5712] __btrfs_unlink_inode+0x350/0xaec [ 87.225014][ T5712] btrfs_unlink+0x108/0x258 [ 87.225625][ T5712] vfs_unlink+0x2e0/0x4f4 [ 87.226243][ T5712] do_unlinkat+0x328/0x618 [ 87.226898][ T5712] __arm64_sys_unlinkat+0xe0/0xfc [ 87.227613][ T5712] invoke_syscall+0x98/0x2b0 [ 87.228261][ T5712] el0_svc_common+0x138/0x258 [ 87.228961][ T5712] do_el0_svc+0x58/0x13c [ 87.229574][ T5712] el0_svc+0x78/0x1d0 [ 87.230175][ T5712] el0t_64_sync_handler+0xcc/0xe4 [ 87.230928][ T5712] el0t_64_sync+0x1a0/0x1a4 [ 87.232276][ T5712] ------------[ cut here ]------------ [ 87.233209][ T5712] WARNING: CPU: 0 PID: 5712 at fs/btrfs/inode.c:4182 __btrfs_unlink_inode+0x904/0xaec [ 87.234495][ T5712] Modules linked in: [ 87.235061][ T5712] CPU: 0 PID: 5712 Comm: syz.0.47 Tainted: G W syzkaller #0 [ 87.236299][ T5712] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/03/2025 [ 87.237805][ T5712] pstate: 62400005 (nZCv daif +PAN -UAO +TCO -DIT -SSBS BTYPE=--) [ 87.238876][ T5712] pc : __btrfs_unlink_inode+0x904/0xaec [ 87.239695][ T5712] lr : __btrfs_unlink_inode+0x904/0xaec [ 87.240541][ T5712] sp : ffff800022487a60 [ 87.241138][ T5712] x29: ffff800022487b10 x28: ffff0000d4e22000 x27: ffff0000de702010 [ 87.242311][ T5712] x26: 0000000000000100 x25: 00000000fffffff4 x24: ffff0000eb97a8f0 [ 87.243454][ T5712] x23: ffff700004490f54 x22: dfff800000000000 x21: ffff0000e8dbd850 [ 87.244663][ T5712] x20: ffff0000de7bff78 x19: 1fffe0001bcf7fef x18: 0000000000000001 [ 87.245883][ T5712] x17: 0000000000000000 x16: ffff800011254fd8 x15: 00000000ffffffff [ 87.247066][ T5712] x14: 0000000000000001 x13: 1fffe000341f07ab x12: 0000000000ff0100 [ 87.248216][ T5712] x11: 0000000000000000 x10: 0000000000000000 x9 : 405c078753344700 [ 87.249452][ T5712] x8 : 405c078753344700 x7 : 0000000000000001 x6 : 0000000000000001 [ 87.250573][ T5712] x5 : ffff800022487378 x4 : ffff80001436f3e0 x3 : ffff800008508fa8 [ 87.251822][ T5712] x2 : 0000000000000001 x1 : 0000000100000000 x0 : 0000000000000026 [ 87.252990][ T5712] Call trace: [ 87.253486][ T5712] __btrfs_unlink_inode+0x904/0xaec [ 87.254225][ T5712] btrfs_unlink+0x108/0x258 [ 87.254858][ T5712] vfs_unlink+0x2e0/0x4f4 [ 87.255487][ T5712] do_unlinkat+0x328/0x618 [ 87.256113][ T5712] __arm64_sys_unlinkat+0xe0/0xfc [ 87.256877][ T5712] invoke_syscall+0x98/0x2b0 [ 87.257543][ T5712] el0_svc_common+0x138/0x258 [ 87.258235][ T5712] do_el0_svc+0x58/0x13c [ 87.258844][ T5712] el0_svc+0x78/0x1d0 [ 87.259417][ T5712] el0t_64_sync_handler+0xcc/0xe4 [ 87.260197][ T5712] el0t_64_sync+0x1a0/0x1a4 [ 87.260836][ T5712] irq event stamp: 79110 [ 87.261429][ T5712] hardirqs last enabled at (79109): [] __up_console_sem+0xb4/0xfc [ 87.262915][ T5712] hardirqs last disabled at (79110): [] el1_dbg+0x24/0x80 [ 87.264264][ T5712] softirqs last enabled at (79090): [] handle_softirqs+0xa40/0xbe4 [ 87.265781][ T5712] softirqs last disabled at (78981): [] __irq_exit_rcu+0x240/0x43c [ 87.267194][ T5712] ---[ end trace ec21c05403b012c8 ]--- [ 87.268724][ T5712] BTRFS: error (device loop0) in __btrfs_unlink_inode:4182: errno=-12 Out of memory [ 87.270220][ T5712] BTRFS info (device loop0): forced readonly [ 87.485939][ T5733] BTRFS: device fsid c9fe44da-de57-406a-8241-57ec7d4412cf devid 1 transid 8 /dev/loop0 scanned by syz.0.48 (5733) [ 87.489239][ T5733] BTRFS info (device loop0): using crc32c (crc32c-generic) checksum algorithm [ 87.490697][ T5733] BTRFS info (device loop0): using free space tree [ 87.491694][ T5733] BTRFS info (device loop0): has skinny extents [ 87.503667][ T5733] BTRFS info (device loop0): enabling ssd optimizations [ 87.514463][ T5733] FAULT_INJECTION: forcing a failure. [ 87.514463][ T5733] name failslab, interval 1, probability 0, space 0, times 0 [ 87.517300][ T5733] CPU: 0 PID: 5733 Comm: syz.0.48 Tainted: G W syzkaller #0 [ 87.518605][ T5733] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/03/2025 [ 87.520096][ T5733] Call trace: [ 87.520580][ T5733] dump_backtrace+0x0/0x458 [ 87.521249][ T5733] show_stack+0x2c/0x3c [ 87.521906][ T5733] __dump_stack+0x30/0x40 [ 87.522510][ T5733] dump_stack_lvl+0xf4/0x15c [ 87.523182][ T5733] dump_stack+0x1c/0x5c [ 87.523774][ T5733] should_fail+0x3bc/0x514 [ 87.524455][ T5733] __should_failslab+0xbc/0x10c [ 87.525204][ T5733] should_failslab+0x10/0x28 [ 87.525910][ T5733] slab_pre_alloc_hook+0x64/0xe8 [ 87.526662][ T5733] kmem_cache_alloc_trace+0x98/0x3ec [ 87.527453][ T5733] btrfs_delete_delayed_dir_index+0x22c/0x56c [ 87.528345][ T5733] __btrfs_unlink_inode+0x350/0xaec [ 87.529130][ T5733] btrfs_unlink+0x108/0x258 [ 87.529796][ T5733] vfs_unlink+0x2e0/0x4f4 [ 87.530481][ T5733] do_unlinkat+0x328/0x618 [ 87.531121][ T5733] __arm64_sys_unlinkat+0xe0/0xfc [ 87.531881][ T5733] invoke_syscall+0x98/0x2b0 [ 87.532518][ T5733] el0_svc_common+0x138/0x258 [ 87.533174][ T5733] do_el0_svc+0x58/0x13c [ 87.533791][ T5733] el0_svc+0x78/0x1d0 [ 87.534407][ T5733] el0t_64_sync_handler+0xcc/0xe4 [ 87.535142][ T5733] el0t_64_sync+0x1a0/0x1a4 [ 87.540442][ T5733] ------------[ cut here ]------------ [ 87.541400][ T5733] WARNING: CPU: 0 PID: 5733 at fs/btrfs/inode.c:4182 __btrfs_unlink_inode+0x904/0xaec [ 87.542808][ T5733] Modules linked in: [ 87.543314][ T5733] CPU: 0 PID: 5733 Comm: syz.0.48 Tainted: G W syzkaller #0 [ 87.544504][ T5733] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/03/2025 [ 87.545946][ T5733] pstate: 62400005 (nZCv daif +PAN -UAO +TCO -DIT -SSBS BTYPE=--) [ 87.547056][ T5733] pc : __btrfs_unlink_inode+0x904/0xaec [ 87.547837][ T5733] lr : __btrfs_unlink_inode+0x904/0xaec [ 87.548660][ T5733] sp : ffff800022487a60 [ 87.549268][ T5733] x29: ffff800022487b10 x28: ffff0000d64f4000 x27: ffff0000de700010 [ 87.550490][ T5733] x26: 0000000000000100 x25: 00000000fffffff4 x24: ffff0000c159a000 [ 87.551617][ T5733] x23: ffff700004490f54 x22: dfff800000000000 x21: ffff0000e8dbe220 [ 87.552711][ T5733] x20: ffff0000de7bf9f8 x19: 1fffe0001bcf7f3f x18: 0000000000000001 [ 87.553903][ T5733] x17: 0000000000000000 x16: ffff800011254fd8 x15: 00000000ffffffff [ 87.555068][ T5733] x14: 0000000000000001 x13: 1fffe000341f07ab x12: 0000000000ff0100 [ 87.556243][ T5733] x11: 0000000000000000 x10: 0000000000000000 x9 : c48255d1cb3f8b00 [ 87.557416][ T5733] x8 : c48255d1cb3f8b00 x7 : 0000000000000001 x6 : 0000000000000001 [ 87.558589][ T5733] x5 : ffff800022487378 x4 : ffff80001436f3e0 x3 : ffff800008508fa8 [ 87.559777][ T5733] x2 : 0000000000000001 x1 : 0000000100000000 x0 : 0000000000000026 [ 87.561017][ T5733] Call trace: [ 87.561486][ T5733] __btrfs_unlink_inode+0x904/0xaec [ 87.562226][ T5733] btrfs_unlink+0x108/0x258 [ 87.562894][ T5733] vfs_unlink+0x2e0/0x4f4 [ 87.563534][ T5733] do_unlinkat+0x328/0x618 [ 87.564235][ T5733] __arm64_sys_unlinkat+0xe0/0xfc [ 87.565020][ T5733] invoke_syscall+0x98/0x2b0 [ 87.565675][ T5733] el0_svc_common+0x138/0x258 [ 87.566354][ T5733] do_el0_svc+0x58/0x13c [ 87.566927][ T5733] el0_svc+0x78/0x1d0 [ 87.567526][ T5733] el0t_64_sync_handler+0xcc/0xe4 [ 87.568255][ T5733] el0t_64_sync+0x1a0/0x1a4 [ 87.568921][ T5733] irq event stamp: 78736 [ 87.569521][ T5733] hardirqs last enabled at (78735): [] __up_console_sem+0xb4/0xfc [ 87.570857][ T5733] hardirqs last disabled at (78736): [] el1_dbg+0x24/0x80 [ 87.572101][ T5733] softirqs last enabled at (78716): [] handle_softirqs+0xa40/0xbe4 [ 87.573465][ T5733] softirqs last disabled at (78685): [] __irq_exit_rcu+0x240/0x43c [ 87.574814][ T5733] ---[ end trace ec21c05403b012c9 ]--- [ 87.576868][ T5733] BTRFS: error (device loop0) in __btrfs_unlink_inode:4182: errno=-12 Out of memory [ 87.578385][ T5733] BTRFS info (device loop0): forced readonly 1970/01/01 00:01:27 executed programs: 36