Warning: Permanently added '10.128.0.234' (ED25519) to the list of known hosts. 1970/01/01 00:01:05 ignoring optional flag "type"="gce" 1970/01/01 00:01:05 parsed 1 programs [ 67.085287][ T4439] Adding 124996k swap on ./swap-file. Priority:0 extents:1 across:124996k SSFS [ 69.624277][ T2064] ieee802154 phy0 wpan0: encryption failed: -22 [ 69.625419][ T2064] ieee802154 phy1 wpan1: encryption failed: -22 [ 69.635214][ T7] cfg80211: failed to load regulatory.db [ 70.768919][ T4480] chnl_net:caif_netlink_parms(): no params data found [ 70.787302][ T4480] bridge0: port 1(bridge_slave_0) entered blocking state [ 70.788681][ T4480] bridge0: port 1(bridge_slave_0) entered disabled state [ 70.790271][ T4480] device bridge_slave_0 entered promiscuous mode [ 70.793371][ T4480] bridge0: port 2(bridge_slave_1) entered blocking state [ 70.794506][ T4480] bridge0: port 2(bridge_slave_1) entered disabled state [ 70.796114][ T4480] device bridge_slave_1 entered promiscuous mode [ 70.804568][ T4480] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 70.807121][ T4480] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 70.816344][ T4480] team0: Port device team_slave_0 added [ 70.818295][ T4480] team0: Port device team_slave_1 added [ 70.827222][ T4480] batman_adv: batadv0: Adding interface: batadv_slave_0 [ 70.828432][ T4480] batman_adv: batadv0: The MTU of interface batadv_slave_0 is too small (1500) to handle the transport of batman-adv packets. Packets going over this interface will be fragmented on layer2 which could impact the performance. Setting the MTU to 1560 would solve the problem. [ 70.832553][ T4480] batman_adv: batadv0: Not using interface batadv_slave_0 (retrying later): interface not active [ 70.835479][ T4480] batman_adv: batadv0: Adding interface: batadv_slave_1 [ 70.836579][ T4480] batman_adv: batadv0: The MTU of interface batadv_slave_1 is too small (1500) to handle the transport of batman-adv packets. Packets going over this interface will be fragmented on layer2 which could impact the performance. Setting the MTU to 1560 would solve the problem. [ 70.840642][ T4480] batman_adv: batadv0: Not using interface batadv_slave_1 (retrying later): interface not active [ 70.884578][ T4480] device hsr_slave_0 entered promiscuous mode [ 70.923132][ T4480] device hsr_slave_1 entered promiscuous mode [ 71.530027][ T4480] netdevsim netdevsim0 netdevsim0: renamed from eth0 [ 71.566743][ T4480] netdevsim netdevsim0 netdevsim1: renamed from eth1 [ 71.604279][ T4480] netdevsim netdevsim0 netdevsim2: renamed from eth2 [ 71.644808][ T4480] netdevsim netdevsim0 netdevsim3: renamed from eth3 [ 71.729602][ T4480] 8021q: adding VLAN 0 to HW filter on device bond0 [ 71.744018][ T439] IPv6: ADDRCONF(NETDEV_CHANGE): veth1: link becomes ready [ 71.745547][ T439] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 71.748410][ T4480] 8021q: adding VLAN 0 to HW filter on device team0 [ 71.762443][ T439] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bridge: link becomes ready [ 71.764101][ T439] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 71.765591][ T439] bridge0: port 1(bridge_slave_0) entered blocking state [ 71.766729][ T439] bridge0: port 1(bridge_slave_0) entered forwarding state [ 71.768182][ T439] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bridge: link becomes ready [ 71.769753][ T439] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 71.771306][ T439] bridge0: port 2(bridge_slave_1) entered blocking state [ 71.772324][ T439] bridge0: port 2(bridge_slave_1) entered forwarding state [ 71.775519][ T439] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bond: link becomes ready [ 71.777277][ T439] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bond: link becomes ready [ 71.779016][ T439] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_team: link becomes ready [ 71.787316][ T439] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 71.789024][ T439] IPv6: ADDRCONF(NETDEV_CHANGE): bridge0: link becomes ready [ 71.790587][ T439] IPv6: ADDRCONF(NETDEV_CHANGE): team0: link becomes ready [ 71.796703][ T4480] hsr0: Slave A (hsr_slave_0) is not up; please bring it up to get a fully working HSR network [ 71.798391][ T4480] hsr0: Slave B (hsr_slave_1) is not up; please bring it up to get a fully working HSR network [ 71.800775][ T136] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_team: link becomes ready [ 71.804054][ T136] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 71.805701][ T136] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_hsr: link becomes ready [ 71.807443][ T136] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 71.810770][ T136] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_hsr: link becomes ready [ 71.812390][ T136] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 71.815824][ T136] IPv6: ADDRCONF(NETDEV_CHANGE): hsr0: link becomes ready [ 71.873951][ T439] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan1: link becomes ready [ 71.875261][ T439] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan0: link becomes ready [ 71.877947][ T4480] 8021q: adding VLAN 0 to HW filter on device batadv0 [ 71.889692][ T1649] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_virt_wifi: link becomes ready [ 71.891336][ T1649] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_virt_wifi: link becomes ready [ 71.899767][ T439] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_vlan: link becomes ready [ 71.901426][ T439] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_vlan: link becomes ready [ 71.905069][ T439] IPv6: ADDRCONF(NETDEV_CHANGE): vlan0: link becomes ready [ 71.906663][ T439] IPv6: ADDRCONF(NETDEV_CHANGE): vlan1: link becomes ready [ 71.909112][ T4480] device veth0_vlan entered promiscuous mode [ 71.912375][ T4480] device veth1_vlan entered promiscuous mode [ 71.922300][ T439] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan0: link becomes ready [ 71.924704][ T439] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan1: link becomes ready [ 71.926195][ T439] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_macvtap: link becomes ready [ 71.927977][ T439] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_macvtap: link becomes ready [ 71.931526][ T4480] device veth0_macvtap entered promiscuous mode [ 71.935383][ T4480] device veth1_macvtap entered promiscuous mode [ 71.941986][ T4480] batman_adv: batadv0: Interface activated: batadv_slave_0 [ 71.945523][ T439] IPv6: ADDRCONF(NETDEV_CHANGE): macvtap0: link becomes ready [ 71.947118][ T439] IPv6: ADDRCONF(NETDEV_CHANGE): macsec0: link becomes ready [ 71.948548][ T439] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_0: link becomes ready [ 71.950076][ T439] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_batadv: link becomes ready [ 71.955457][ T4480] batman_adv: batadv0: Interface activated: batadv_slave_1 [ 71.956709][ T136] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_1: link becomes ready [ 71.958324][ T136] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_batadv: link becomes ready [ 71.961406][ T4480] netdevsim netdevsim0 netdevsim0: set [1, 0] type 2 family 0 port 6081 - 0 [ 71.962784][ T4480] netdevsim netdevsim0 netdevsim1: set [1, 0] type 2 family 0 port 6081 - 0 [ 71.970948][ T4480] netdevsim netdevsim0 netdevsim2: set [1, 0] type 2 family 0 port 6081 - 0 [ 71.972445][ T4480] netdevsim netdevsim0 netdevsim3: set [1, 0] type 2 family 0 port 6081 - 0 [ 72.310664][ T9] netdevsim netdevsim0 netdevsim3 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 72.529121][ T439] wlan0: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 72.530426][ T439] wlan0: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 72.531768][ T136] IPv6: ADDRCONF(NETDEV_CHANGE): wlan0: link becomes ready [ 72.550891][ T439] wlan1: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 72.552198][ T439] wlan1: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 72.554409][ T136] IPv6: ADDRCONF(NETDEV_CHANGE): wlan1: link becomes ready 1970/01/01 00:01:12 executed programs: 0 [ 72.670801][ T4646] chnl_net:caif_netlink_parms(): no params data found [ 72.691309][ T4646] bridge0: port 1(bridge_slave_0) entered blocking state [ 72.692565][ T4646] bridge0: port 1(bridge_slave_0) entered disabled state [ 72.694825][ T4646] device bridge_slave_0 entered promiscuous mode [ 72.696891][ T4646] bridge0: port 2(bridge_slave_1) entered blocking state [ 72.697979][ T4646] bridge0: port 2(bridge_slave_1) entered disabled state [ 72.699525][ T4646] device bridge_slave_1 entered promiscuous mode [ 72.708541][ T4646] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 72.711357][ T4646] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 72.721289][ T4646] team0: Port device team_slave_0 added [ 72.723836][ T4646] team0: Port device team_slave_1 added [ 72.733999][ T4646] batman_adv: batadv0: Adding interface: batadv_slave_0 [ 72.736396][ T4646] batman_adv: batadv0: The MTU of interface batadv_slave_0 is too small (1500) to handle the transport of batman-adv packets. Packets going over this interface will be fragmented on layer2 which could impact the performance. Setting the MTU to 1560 would solve the problem. [ 72.740870][ T4646] batman_adv: batadv0: Not using interface batadv_slave_0 (retrying later): interface not active [ 72.744014][ T4646] batman_adv: batadv0: Adding interface: batadv_slave_1 [ 72.745158][ T4646] batman_adv: batadv0: The MTU of interface batadv_slave_1 is too small (1500) to handle the transport of batman-adv packets. Packets going over this interface will be fragmented on layer2 which could impact the performance. Setting the MTU to 1560 would solve the problem. [ 72.749539][ T4646] batman_adv: batadv0: Not using interface batadv_slave_1 (retrying later): interface not active [ 72.795136][ T4646] device hsr_slave_0 entered promiscuous mode [ 72.833275][ T4646] device hsr_slave_1 entered promiscuous mode [ 72.872990][ T4646] debugfs: Directory 'hsr0' with parent 'hsr' already present! [ 72.874349][ T4646] Cannot create hsr debugfs directory [ 74.672970][ T4066] Bluetooth: hci0: command 0x0409 tx timeout [ 75.336145][ T9] netdevsim netdevsim0 netdevsim2 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 76.742974][ T4140] Bluetooth: hci0: command 0x041b tx timeout [ 77.736278][ T9] netdevsim netdevsim0 netdevsim1 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 77.777676][ T9] netdevsim netdevsim0 netdevsim0 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 78.648962][ T4646] netdevsim netdevsim0 netdevsim0: renamed from eth0 [ 78.675227][ T4646] netdevsim netdevsim0 netdevsim1: renamed from eth1 [ 78.704251][ T4646] netdevsim netdevsim0 netdevsim2: renamed from eth2 [ 78.744278][ T4646] netdevsim netdevsim0 netdevsim3: renamed from eth3 [ 78.817870][ T4646] 8021q: adding VLAN 0 to HW filter on device bond0 [ 78.822519][ T439] IPv6: ADDRCONF(NETDEV_CHANGE): veth1: link becomes ready [ 78.823656][ T13] Bluetooth: hci0: command 0x040f tx timeout [ 78.825379][ T439] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 78.828286][ T4646] 8021q: adding VLAN 0 to HW filter on device team0 [ 78.830900][ T439] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bridge: link becomes ready [ 78.832398][ T439] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 78.834145][ T439] bridge0: port 1(bridge_slave_0) entered blocking state [ 78.835243][ T439] bridge0: port 1(bridge_slave_0) entered forwarding state [ 78.836735][ T439] IPv6: ADDRCONF(NETDEV_CHANGE): bridge0: link becomes ready [ 78.839642][ T439] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bridge: link becomes ready [ 78.841314][ T439] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 78.842897][ T439] bridge0: port 2(bridge_slave_1) entered blocking state [ 78.844076][ T439] bridge0: port 2(bridge_slave_1) entered forwarding state [ 78.847201][ T439] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bond: link becomes ready [ 78.850113][ T439] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bond: link becomes ready [ 78.855977][ T439] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_team: link becomes ready [ 78.858073][ T439] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 78.859717][ T439] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_team: link becomes ready [ 78.861239][ T439] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 78.862867][ T439] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_hsr: link becomes ready [ 78.865392][ T439] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 78.866798][ T439] IPv6: ADDRCONF(NETDEV_CHANGE): team0: link becomes ready [ 78.869914][ T439] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_hsr: link becomes ready [ 78.871652][ T439] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 78.875654][ T4646] IPv6: ADDRCONF(NETDEV_CHANGE): hsr0: link becomes ready [ 78.921750][ T4646] 8021q: adding VLAN 0 to HW filter on device batadv0 [ 78.925059][ T136] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan1: link becomes ready [ 78.926326][ T136] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan0: link becomes ready [ 78.934200][ T1649] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_virt_wifi: link becomes ready [ 78.935941][ T1649] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_virt_wifi: link becomes ready [ 78.941737][ T1649] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_vlan: link becomes ready [ 78.944102][ T1649] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_vlan: link becomes ready [ 78.945880][ T1649] IPv6: ADDRCONF(NETDEV_CHANGE): vlan0: link becomes ready [ 78.947329][ T1649] IPv6: ADDRCONF(NETDEV_CHANGE): vlan1: link becomes ready [ 78.950015][ T4646] device veth0_vlan entered promiscuous mode [ 78.954011][ T4646] device veth1_vlan entered promiscuous mode [ 78.961908][ T1649] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan0: link becomes ready [ 78.964465][ T1649] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan1: link becomes ready [ 78.966048][ T1649] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_macvtap: link becomes ready [ 78.967637][ T1649] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_macvtap: link becomes ready [ 78.970441][ T4646] device veth0_macvtap entered promiscuous mode [ 78.973176][ T4646] device veth1_macvtap entered promiscuous mode [ 78.978774][ T4646] batman_adv: The newly added mac address (aa:aa:aa:aa:aa:3e) already exists on: batadv_slave_0 [ 78.980179][ T4646] batman_adv: It is strongly recommended to keep mac addresses unique to avoid problems! [ 78.982158][ T4646] batman_adv: batadv0: Interface activated: batadv_slave_0 [ 78.987330][ T1649] IPv6: ADDRCONF(NETDEV_CHANGE): macvtap0: link becomes ready [ 78.988942][ T1649] IPv6: ADDRCONF(NETDEV_CHANGE): macsec0: link becomes ready [ 78.990364][ T1649] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_0: link becomes ready [ 78.991886][ T1649] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_batadv: link becomes ready [ 78.995678][ T4646] batman_adv: The newly added mac address (aa:aa:aa:aa:aa:3f) already exists on: batadv_slave_1 [ 78.997294][ T4646] batman_adv: It is strongly recommended to keep mac addresses unique to avoid problems! [ 78.999511][ T4646] batman_adv: batadv0: Interface activated: batadv_slave_1 [ 79.000759][ T1649] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_1: link becomes ready [ 79.002490][ T1649] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_batadv: link becomes ready [ 79.005555][ T4646] netdevsim netdevsim0 netdevsim0: set [1, 0] type 2 family 0 port 6081 - 0 [ 79.007089][ T4646] netdevsim netdevsim0 netdevsim1: set [1, 0] type 2 family 0 port 6081 - 0 [ 79.008517][ T4646] netdevsim netdevsim0 netdevsim2: set [1, 0] type 2 family 0 port 6081 - 0 [ 79.010078][ T4646] netdevsim netdevsim0 netdevsim3: set [1, 0] type 2 family 0 port 6081 - 0 [ 79.030449][ T1649] wlan0: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 79.032624][ T1649] wlan0: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 79.035150][ T439] IPv6: ADDRCONF(NETDEV_CHANGE): wlan0: link becomes ready [ 79.042128][ T1649] wlan1: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 79.044601][ T1649] wlan1: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 79.046171][ T1649] IPv6: ADDRCONF(NETDEV_CHANGE): wlan1: link becomes ready 1970/01/01 00:01:19 executed programs: 2 [ 79.165380][ T4914] loop0: detected capacity change from 0 to 32768 [ 79.209122][ T4914] BTRFS: device fsid c9fe44da-de57-406a-8241-57ec7d4412cf devid 1 transid 8 /dev/loop0 scanned by syz.0.15 (4914) [ 79.216956][ T4914] BTRFS info (device loop0): using crc32c (crc32c-generic) checksum algorithm [ 79.218560][ T4914] BTRFS info (device loop0): using free space tree [ 79.219448][ T4914] BTRFS info (device loop0): has skinny extents [ 79.230435][ T4914] BTRFS info (device loop0): enabling ssd optimizations [ 79.240179][ T4914] FAULT_INJECTION: forcing a failure. [ 79.240179][ T4914] name failslab, interval 1, probability 0, space 0, times 1 [ 79.242380][ T4914] CPU: 0 PID: 4914 Comm: syz.0.15 Not tainted syzkaller #0 [ 79.243537][ T4914] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/26/2026 [ 79.245164][ T4914] Call trace: [ 79.245693][ T4914] dump_backtrace+0x0/0x458 [ 79.246440][ T4914] show_stack+0x2c/0x3c [ 79.247221][ T4914] __dump_stack+0x30/0x40 [ 79.247969][ T4914] dump_stack_lvl+0xf4/0x15c [ 79.248754][ T4914] dump_stack+0x1c/0x5c [ 79.249515][ T4914] should_fail+0x3bc/0x514 [ 79.250247][ T4914] __should_failslab+0xbc/0x10c [ 79.251043][ T4914] should_failslab+0x10/0x28 [ 79.251766][ T4914] slab_pre_alloc_hook+0x64/0xe8 [ 79.252676][ T4914] kmem_cache_alloc_trace+0x98/0x3ec [ 79.253575][ T4914] btrfs_delete_delayed_dir_index+0x22c/0x56c [ 79.254633][ T4914] __btrfs_unlink_inode+0x350/0xaec [ 79.255489][ T4914] btrfs_unlink+0x108/0x258 [ 79.256277][ T4914] vfs_unlink+0x2e0/0x4f4 [ 79.257012][ T4914] do_unlinkat+0x328/0x618 [ 79.257727][ T4914] __arm64_sys_unlinkat+0xe0/0xfc [ 79.258558][ T4914] invoke_syscall+0x98/0x2b0 [ 79.259310][ T4914] el0_svc_common+0x138/0x258 [ 79.260175][ T4914] do_el0_svc+0x58/0x13c [ 79.260830][ T4914] el0_svc+0x78/0x1d0 [ 79.261473][ T4914] el0t_64_sync_handler+0xcc/0xe4 [ 79.262312][ T4914] el0t_64_sync+0x1a0/0x1a4 [ 79.273912][ T4914] ------------[ cut here ]------------ [ 79.274952][ T4914] WARNING: CPU: 1 PID: 4914 at fs/btrfs/inode.c:4182 __btrfs_unlink_inode+0x904/0xaec [ 79.276488][ T4914] Modules linked in: [ 79.277159][ T4914] CPU: 1 PID: 4914 Comm: syz.0.15 Not tainted syzkaller #0 [ 79.278284][ T4914] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/26/2026 [ 79.279918][ T4914] pstate: 62400005 (nZCv daif +PAN -UAO +TCO -DIT -SSBS BTYPE=--) [ 79.281101][ T4914] pc : __btrfs_unlink_inode+0x904/0xaec [ 79.281954][ T4914] lr : __btrfs_unlink_inode+0x904/0xaec [ 79.282796][ T4914] sp : ffff80001f8b7a60 [ 79.283438][ T4914] x29: ffff80001f8b7b10 x28: ffff0000c0c10000 x27: ffff0000ebdb8010 [ 79.284785][ T4914] x26: 0000000000000100 x25: 00000000fffffff4 x24: ffff0000ebbfff20 [ 79.286145][ T4914] x23: ffff700003f16f54 x22: dfff800000000000 x21: ffff0000ebd613a0 [ 79.287461][ T4914] x20: ffff0000de5bd108 x19: 1fffe0001bcb7a21 x18: 0000000000000001 [ 79.288729][ T4914] x17: 0000000000000000 x16: ffff8000083049fc x15: 00000000ffffffff [ 79.290095][ T4914] x14: 0000000000000001 x13: 1ffff00003f16e6c x12: 0000000000ff0100 [ 79.291427][ T4914] x11: 0000000000000000 x10: 0000000000000000 x9 : 97c3cb91abcb6300 [ 79.292756][ T4914] x8 : 97c3cb91abcb6300 x7 : 0000000000000001 x6 : 0000000000000001 [ 79.294143][ T4914] x5 : ffff80001f8b7378 x4 : ffff80001437f3e0 x3 : ffff800008304b0c [ 79.295465][ T4914] x2 : 0000000000000001 x1 : 0000000100000000 x0 : 0000000000000026 [ 79.296883][ T4914] Call trace: [ 79.297403][ T4914] __btrfs_unlink_inode+0x904/0xaec [ 79.298270][ T4914] btrfs_unlink+0x108/0x258 [ 79.299023][ T4914] vfs_unlink+0x2e0/0x4f4 [ 79.299802][ T4914] do_unlinkat+0x328/0x618 [ 79.300579][ T4914] __arm64_sys_unlinkat+0xe0/0xfc [ 79.301490][ T4914] invoke_syscall+0x98/0x2b0 [ 79.302285][ T4914] el0_svc_common+0x138/0x258 [ 79.303128][ T4914] do_el0_svc+0x58/0x13c [ 79.303953][ T4914] el0_svc+0x78/0x1d0 [ 79.304601][ T4914] el0t_64_sync_handler+0xcc/0xe4 [ 79.305439][ T4914] el0t_64_sync+0x1a0/0x1a4 [ 79.306266][ T4914] irq event stamp: 82034 [ 79.306996][ T4914] hardirqs last enabled at (82033): [] __up_console_sem+0xb4/0xfc [ 79.308532][ T4914] hardirqs last disabled at (82034): [] el1_dbg+0x24/0x80 [ 79.309920][ T4914] softirqs last enabled at (82014): [] handle_softirqs+0xa40/0xbe4 [ 79.311535][ T4914] softirqs last disabled at (81893): [] __irq_exit_rcu+0x240/0x43c [ 79.313210][ T4914] ---[ end trace 9bf576fe55b8114b ]--- [ 79.318525][ T4914] BTRFS: error (device loop0) in __btrfs_unlink_inode:4182: errno=-12 Out of memory [ 79.320158][ T4914] BTRFS info (device loop0): forced readonly [ 79.538315][ T4941] loop0: detected capacity change from 0 to 32768 [ 79.585930][ T4941] BTRFS: device fsid c9fe44da-de57-406a-8241-57ec7d4412cf devid 1 transid 8 /dev/loop0 scanned by syz.0.16 (4941) [ 79.591517][ T4941] BTRFS info (device loop0): using crc32c (crc32c-generic) checksum algorithm [ 79.593156][ T4941] BTRFS info (device loop0): using free space tree [ 79.594214][ T4941] BTRFS info (device loop0): has skinny extents [ 79.602036][ T4941] BTRFS info (device loop0): enabling ssd optimizations [ 79.607991][ T4941] FAULT_INJECTION: forcing a failure. [ 79.607991][ T4941] name failslab, interval 1, probability 0, space 0, times 0 [ 79.610016][ T4941] CPU: 0 PID: 4941 Comm: syz.0.16 Tainted: G W syzkaller #0 [ 79.611437][ T4941] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/26/2026 [ 79.613038][ T4941] Call trace: [ 79.613586][ T4941] dump_backtrace+0x0/0x458 [ 79.614358][ T4941] show_stack+0x2c/0x3c [ 79.615087][ T4941] __dump_stack+0x30/0x40 [ 79.615845][ T4941] dump_stack_lvl+0xf4/0x15c [ 79.616568][ T4941] dump_stack+0x1c/0x5c [ 79.617243][ T4941] should_fail+0x3bc/0x514 [ 79.617951][ T4941] __should_failslab+0xbc/0x10c [ 79.618765][ T4941] should_failslab+0x10/0x28 [ 79.619521][ T4941] slab_pre_alloc_hook+0x64/0xe8 [ 79.620411][ T4941] kmem_cache_alloc_trace+0x98/0x3ec [ 79.621314][ T4941] btrfs_delete_delayed_dir_index+0x22c/0x56c [ 79.622404][ T4941] __btrfs_unlink_inode+0x350/0xaec [ 79.623307][ T4941] btrfs_unlink+0x108/0x258 [ 79.624012][ T4941] vfs_unlink+0x2e0/0x4f4 [ 79.624678][ T4941] do_unlinkat+0x328/0x618 [ 79.625410][ T4941] __arm64_sys_unlinkat+0xe0/0xfc [ 79.626203][ T4941] invoke_syscall+0x98/0x2b0 [ 79.627007][ T4941] el0_svc_common+0x138/0x258 [ 79.627836][ T4941] do_el0_svc+0x58/0x13c [ 79.628489][ T4941] el0_svc+0x78/0x1d0 [ 79.629096][ T4941] el0t_64_sync_handler+0xcc/0xe4 [ 79.629950][ T4941] el0t_64_sync+0x1a0/0x1a4 [ 79.633239][ T4941] ------------[ cut here ]------------ [ 79.634783][ T4941] WARNING: CPU: 1 PID: 4941 at fs/btrfs/inode.c:4182 __btrfs_unlink_inode+0x904/0xaec [ 79.636359][ T4941] Modules linked in: [ 79.637108][ T4941] CPU: 1 PID: 4941 Comm: syz.0.16 Tainted: G W syzkaller #0 [ 79.638419][ T4941] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/26/2026 [ 79.640002][ T4941] pstate: 62400005 (nZCv daif +PAN -UAO +TCO -DIT -SSBS BTYPE=--) [ 79.641293][ T4941] pc : __btrfs_unlink_inode+0x904/0xaec [ 79.642187][ T4941] lr : __btrfs_unlink_inode+0x904/0xaec [ 79.643051][ T4941] sp : ffff80001f527a60 [ 79.643718][ T4941] x29: ffff80001f527b10 x28: ffff0000dc618000 x27: ffff0000ebdb8410 [ 79.645010][ T4941] x26: 0000000000000100 x25: 00000000fffffff4 x24: ffff0000c1551f20 [ 79.646418][ T4941] x23: ffff700003ea4f54 x22: dfff800000000000 x21: ffff0000ebd63ae0 [ 79.647730][ T4941] x20: ffff0000de5bd268 x19: 1fffe0001bcb7a4d x18: 0000000000000001 [ 79.649137][ T4941] x17: 0000000000000000 x16: ffff80001125a830 x15: 00000000ffffffff [ 79.650482][ T4941] x14: 0000000000000001 x13: 1fffe000341f47ab x12: 0000000000ff0100 [ 79.651837][ T4941] x11: 0000000000000000 x10: 0000000000000000 x9 : 7c17cb52366d0200 [ 79.653211][ T4941] x8 : 7c17cb52366d0200 x7 : 0000000000000001 x6 : 0000000000000001 [ 79.654586][ T4941] x5 : ffff80001f527378 x4 : ffff80001437f3e0 x3 : ffff800008508edc [ 79.656032][ T4941] x2 : 0000000000000001 x1 : 0000000100000000 x0 : 0000000000000026 [ 79.657319][ T4941] Call trace: [ 79.657826][ T4941] __btrfs_unlink_inode+0x904/0xaec [ 79.658803][ T4941] btrfs_unlink+0x108/0x258 [ 79.659547][ T4941] vfs_unlink+0x2e0/0x4f4 [ 79.660288][ T4941] do_unlinkat+0x328/0x618 [ 79.661012][ T4941] __arm64_sys_unlinkat+0xe0/0xfc [ 79.661823][ T4941] invoke_syscall+0x98/0x2b0 [ 79.662578][ T4941] el0_svc_common+0x138/0x258 [ 79.663344][ T4941] do_el0_svc+0x58/0x13c [ 79.664031][ T4941] el0_svc+0x78/0x1d0 [ 79.664686][ T4941] el0t_64_sync_handler+0xcc/0xe4 [ 79.665532][ T4941] el0t_64_sync+0x1a0/0x1a4 [ 79.666310][ T4941] irq event stamp: 80346 [ 79.666990][ T4941] hardirqs last enabled at (80345): [] __up_console_sem+0xb4/0xfc [ 79.668478][ T4941] hardirqs last disabled at (80346): [] el1_dbg+0x24/0x80 [ 79.669894][ T4941] softirqs last enabled at (80322): [] handle_softirqs+0xa40/0xbe4 [ 79.671353][ T4941] softirqs last disabled at (80303): [] __irq_exit_rcu+0x240/0x43c [ 79.672884][ T4941] ---[ end trace 9bf576fe55b8114c ]--- [ 79.675446][ T4941] BTRFS: error (device loop0) in __btrfs_unlink_inode:4182: errno=-12 Out of memory [ 79.676711][ T4941] BTRFS info (device loop0): forced readonly [ 79.842421][ T4971] loop0: detected capacity change from 0 to 32768 [ 79.927653][ T4971] BTRFS: device fsid c9fe44da-de57-406a-8241-57ec7d4412cf devid 1 transid 8 /dev/loop0 scanned by syz.0.17 (4971) [ 79.933581][ T4971] BTRFS info (device loop0): using crc32c (crc32c-generic) checksum algorithm [ 79.935256][ T4971] BTRFS info (device loop0): using free space tree [ 79.936332][ T4971] BTRFS info (device loop0): has skinny extents [ 79.945771][ T4971] BTRFS info (device loop0): enabling ssd optimizations [ 79.950805][ T4971] FAULT_INJECTION: forcing a failure. [ 79.950805][ T4971] name failslab, interval 1, probability 0, space 0, times 0 [ 79.952823][ T4971] CPU: 0 PID: 4971 Comm: syz.0.17 Tainted: G W syzkaller #0 [ 79.954361][ T4971] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/26/2026 [ 79.956048][ T4971] Call trace: [ 79.956554][ T4971] dump_backtrace+0x0/0x458 [ 79.957368][ T4971] show_stack+0x2c/0x3c [ 79.958050][ T4971] __dump_stack+0x30/0x40 [ 79.958783][ T4971] dump_stack_lvl+0xf4/0x15c [ 79.959561][ T4971] dump_stack+0x1c/0x5c [ 79.960311][ T4971] should_fail+0x3bc/0x514 [ 79.961124][ T4971] __should_failslab+0xbc/0x10c [ 79.961945][ T4971] should_failslab+0x10/0x28 [ 79.962632][ T4971] slab_pre_alloc_hook+0x64/0xe8 [ 79.963392][ T4971] kmem_cache_alloc_trace+0x98/0x3ec [ 79.964232][ T4971] btrfs_delete_delayed_dir_index+0x22c/0x56c [ 79.965243][ T4971] __btrfs_unlink_inode+0x350/0xaec [ 79.966083][ T4971] btrfs_unlink+0x108/0x258 [ 79.966858][ T4971] vfs_unlink+0x2e0/0x4f4 [ 79.967584][ T4971] do_unlinkat+0x328/0x618 [ 79.968258][ T4971] __arm64_sys_unlinkat+0xe0/0xfc [ 79.969120][ T4971] invoke_syscall+0x98/0x2b0 [ 79.969846][ T4971] el0_svc_common+0x138/0x258 [ 79.970587][ T4971] do_el0_svc+0x58/0x13c [ 79.971298][ T4971] el0_svc+0x78/0x1d0 [ 79.971913][ T4971] el0t_64_sync_handler+0xcc/0xe4 [ 79.972875][ T4971] el0t_64_sync+0x1a0/0x1a4 [ 79.975345][ T4971] ------------[ cut here ]------------ [ 79.976235][ T4971] WARNING: CPU: 0 PID: 4971 at fs/btrfs/inode.c:4182 __btrfs_unlink_inode+0x904/0xaec [ 79.977709][ T4971] Modules linked in: [ 79.978334][ T4971] CPU: 0 PID: 4971 Comm: syz.0.17 Tainted: G W syzkaller #0 [ 79.979810][ T4971] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/26/2026 [ 79.981358][ T4971] pstate: 62400005 (nZCv daif +PAN -UAO +TCO -DIT -SSBS BTYPE=--) [ 79.982672][ T4971] pc : __btrfs_unlink_inode+0x904/0xaec [ 79.983558][ T4971] lr : __btrfs_unlink_inode+0x904/0xaec [ 79.984573][ T4971] sp : ffff80001fb57a60 [ 79.985245][ T4971] x29: ffff80001fb57b10 x28: ffff0000d4108000 x27: ffff0000ebdb8810 [ 79.986605][ T4971] x26: 0000000000000100 x25: 00000000fffffff4 x24: ffff0000da2720b0 [ 79.987937][ T4971] x23: ffff700003f6af54 x22: dfff800000000000 x21: ffff0000ebd66220 [ 79.989225][ T4971] x20: ffff0000de5bd3c8 x19: 1fffe0001bcb7a79 x18: 0000000000000001 [ 79.990584][ T4971] x17: 0000000000000000 x16: ffff80001125a830 x15: 00000000ffffffff [ 79.991991][ T4971] x14: 0000000000000001 x13: 1fffe000341f05ab x12: 0000000000ff0100 [ 79.993204][ T4971] x11: 0000000000000000 x10: 0000000000000000 x9 : 2da0b1292d27d800 [ 79.994521][ T4971] x8 : 2da0b1292d27d800 x7 : 0000000000000001 x6 : 0000000000000001 [ 79.995819][ T4971] x5 : ffff80001fb57378 x4 : ffff80001437f3e0 x3 : ffff800008508edc [ 79.997168][ T4971] x2 : 0000000000000001 x1 : 0000000100000000 x0 : 0000000000000026 [ 79.998463][ T4971] Call trace: [ 79.999085][ T4971] __btrfs_unlink_inode+0x904/0xaec [ 79.999941][ T4971] btrfs_unlink+0x108/0x258 [ 80.000697][ T4971] vfs_unlink+0x2e0/0x4f4 [ 80.001465][ T4971] do_unlinkat+0x328/0x618 [ 80.002165][ T4971] __arm64_sys_unlinkat+0xe0/0xfc [ 80.003079][ T4971] invoke_syscall+0x98/0x2b0 [ 80.003835][ T4971] el0_svc_common+0x138/0x258 [ 80.004575][ T4971] do_el0_svc+0x58/0x13c [ 80.005318][ T4971] el0_svc+0x78/0x1d0 [ 80.005953][ T4971] el0t_64_sync_handler+0xcc/0xe4 [ 80.006785][ T4971] el0t_64_sync+0x1a0/0x1a4 [ 80.007535][ T4971] irq event stamp: 80130 [ 80.008230][ T4971] hardirqs last enabled at (80129): [] __up_console_sem+0xb4/0xfc [ 80.009801][ T4971] hardirqs last disabled at (80130): [] el1_dbg+0x24/0x80 [ 80.011327][ T4971] softirqs last enabled at (80110): [] handle_softirqs+0xa40/0xbe4 [ 80.012979][ T4971] softirqs last disabled at (80075): [] __irq_exit_rcu+0x240/0x43c [ 80.014519][ T4971] ---[ end trace 9bf576fe55b8114d ]--- [ 80.018548][ T4971] BTRFS: error (device loop0) in __btrfs_unlink_inode:4182: errno=-12 Out of memory [ 80.020125][ T4971] BTRFS info (device loop0): forced readonly [ 80.178424][ T4993] loop0: detected capacity change from 0 to 32768 [ 80.224527][ T4993] BTRFS: device fsid c9fe44da-de57-406a-8241-57ec7d4412cf devid 1 transid 8 /dev/loop0 scanned by syz.0.18 (4993) [ 80.227681][ T4993] BTRFS info (device loop0): using crc32c (crc32c-generic) checksum algorithm [ 80.230037][ T4993] BTRFS info (device loop0): using free space tree [ 80.231228][ T4993] BTRFS info (device loop0): has skinny extents [ 80.242407][ T4993] BTRFS info (device loop0): enabling ssd optimizations [ 80.257662][ T4993] FAULT_INJECTION: forcing a failure. [ 80.257662][ T4993] name fail_page_alloc, interval 1, probability 0, space 0, times 1 [ 80.259948][ T4993] CPU: 1 PID: 4993 Comm: syz.0.18 Tainted: G W syzkaller #0 [ 80.261253][ T4993] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/26/2026 [ 80.262864][ T4993] Call trace: [ 80.263425][ T4993] dump_backtrace+0x0/0x458 [ 80.264213][ T4993] show_stack+0x2c/0x3c [ 80.265057][ T4993] __dump_stack+0x30/0x40 [ 80.265816][ T4993] dump_stack_lvl+0xf4/0x15c [ 80.266640][ T4993] dump_stack+0x1c/0x5c [ 80.267364][ T4993] should_fail+0x3bc/0x514 [ 80.268085][ T4993] should_fail_alloc_page+0x74/0xa8 [ 80.268898][ T4993] prepare_alloc_pages+0x160/0x45c [ 80.269744][ T4993] __alloc_pages+0x108/0x470 [ 80.270446][ T4993] alloc_pages+0x34c/0x5c0 [ 80.271167][ T4993] new_slab+0xe0/0x544 [ 80.271841][ T4993] ___slab_alloc+0x6b4/0xd8c [ 80.272593][ T4993] __slab_alloc+0x68/0xc0 [ 80.273332][ T4993] kmem_cache_alloc+0x2a4/0x3d4 [ 80.274155][ T4993] btrfs_alloc_path+0x5c/0x68 [ 80.274944][ T4993] __btrfs_unlink_inode+0x1dc/0xaec [ 80.275855][ T4993] btrfs_unlink+0x108/0x258 [ 80.276603][ T4993] vfs_unlink+0x2e0/0x4f4 [ 80.277322][ T4993] do_unlinkat+0x328/0x618 [ 80.278035][ T4993] __arm64_sys_unlinkat+0xe0/0xfc [ 80.278874][ T4993] invoke_syscall+0x98/0x2b0 [ 80.279558][ T4993] el0_svc_common+0x138/0x258 [ 80.280325][ T4993] do_el0_svc+0x58/0x13c [ 80.281037][ T4993] el0_svc+0x78/0x1d0 [ 80.281655][ T4993] el0t_64_sync_handler+0xcc/0xe4 [ 80.282448][ T4993] el0t_64_sync+0x1a0/0x1a4 [ 80.448855][ T5015] loop0: detected capacity change from 0 to 32768 [ 80.452216][ T5015] BTRFS: device fsid c9fe44da-de57-406a-8241-57ec7d4412cf devid 1 transid 8 /dev/loop0 scanned by syz.0.19 (5015) [ 80.457197][ T5015] BTRFS info (device loop0): using crc32c (crc32c-generic) checksum algorithm [ 80.458651][ T5015] BTRFS info (device loop0): using free space tree [ 80.459794][ T5015] BTRFS info (device loop0): has skinny extents [ 80.474695][ T5015] BTRFS info (device loop0): enabling ssd optimizations [ 80.478866][ T5015] FAULT_INJECTION: forcing a failure. [ 80.478866][ T5015] name failslab, interval 1, probability 0, space 0, times 0 [ 80.481053][ T5015] CPU: 1 PID: 5015 Comm: syz.0.19 Tainted: G W syzkaller #0 [ 80.482421][ T5015] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/26/2026 [ 80.484185][ T5015] Call trace: [ 80.484712][ T5015] dump_backtrace+0x0/0x458 [ 80.485498][ T5015] show_stack+0x2c/0x3c [ 80.486223][ T5015] __dump_stack+0x30/0x40 [ 80.486966][ T5015] dump_stack_lvl+0xf4/0x15c [ 80.487761][ T5015] dump_stack+0x1c/0x5c [ 80.488426][ T5015] should_fail+0x3bc/0x514 [ 80.489186][ T5015] __should_failslab+0xbc/0x10c [ 80.489966][ T5015] should_failslab+0x10/0x28 [ 80.490754][ T5015] slab_pre_alloc_hook+0x64/0xe8 [ 80.491558][ T5015] kmem_cache_alloc_trace+0x98/0x3ec [ 80.492400][ T5015] btrfs_delete_delayed_dir_index+0x22c/0x56c [ 80.493418][ T5015] __btrfs_unlink_inode+0x350/0xaec [ 80.494255][ T5015] btrfs_unlink+0x108/0x258 [ 80.495056][ T5015] vfs_unlink+0x2e0/0x4f4 [ 80.495779][ T5015] do_unlinkat+0x328/0x618 [ 80.496512][ T5015] __arm64_sys_unlinkat+0xe0/0xfc [ 80.497328][ T5015] invoke_syscall+0x98/0x2b0 [ 80.498122][ T5015] el0_svc_common+0x138/0x258 [ 80.498896][ T5015] do_el0_svc+0x58/0x13c [ 80.499512][ T5015] el0_svc+0x78/0x1d0 [ 80.500138][ T5015] el0t_64_sync_handler+0xcc/0xe4 [ 80.500990][ T5015] el0t_64_sync+0x1a0/0x1a4 [ 80.505023][ T5015] ------------[ cut here ]------------ [ 80.506019][ T5015] WARNING: CPU: 0 PID: 5015 at fs/btrfs/inode.c:4182 __btrfs_unlink_inode+0x904/0xaec [ 80.507526][ T5015] Modules linked in: [ 80.508159][ T5015] CPU: 0 PID: 5015 Comm: syz.0.19 Tainted: G W syzkaller #0 [ 80.509708][ T5015] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/26/2026 [ 80.511398][ T5015] pstate: 62400005 (nZCv daif +PAN -UAO +TCO -DIT -SSBS BTYPE=--) [ 80.512707][ T5015] pc : __btrfs_unlink_inode+0x904/0xaec [ 80.513685][ T5015] lr : __btrfs_unlink_inode+0x904/0xaec [ 80.514634][ T5015] sp : ffff80001fb57a60 [ 80.515299][ T5015] x29: ffff80001fb57b10 x28: ffff0000dc52c000 x27: ffff0000e25f0410 [ 80.516621][ T5015] x26: 0000000000000100 x25: 00000000fffffff4 x24: ffff0000de391160 [ 80.517952][ T5015] x23: ffff700003f6af54 x22: dfff800000000000 x21: ffff0000e279a740 [ 80.519248][ T5015] x20: ffff0000de7e45d8 x19: 1fffe0001bcfc8bb x18: 0000000000000001 [ 80.520520][ T5015] x17: 0000000000000000 x16: ffff8000083049fc x15: 00000000ffffffff [ 80.521834][ T5015] x14: 0000000000000001 x13: 1ffff00003f6ae6c x12: 0000000000ff0100 [ 80.523194][ T5015] x11: 0000000000000000 x10: 0000000000000000 x9 : 945f35f2dafef200 [ 80.524639][ T5015] x8 : 945f35f2dafef200 x7 : 0000000000000001 x6 : 0000000000000001 [ 80.525939][ T5015] x5 : ffff80001fb57378 x4 : ffff80001437f3e0 x3 : ffff800008304b0c [ 80.527212][ T5015] x2 : 0000000000000001 x1 : 0000000100000000 x0 : 0000000000000026 [ 80.528532][ T5015] Call trace: [ 80.529070][ T5015] __btrfs_unlink_inode+0x904/0xaec [ 80.529879][ T5015] btrfs_unlink+0x108/0x258 [ 80.530614][ T5015] vfs_unlink+0x2e0/0x4f4 [ 80.531304][ T5015] do_unlinkat+0x328/0x618 [ 80.532006][ T5015] __arm64_sys_unlinkat+0xe0/0xfc [ 80.532791][ T5015] invoke_syscall+0x98/0x2b0 [ 80.533543][ T5015] el0_svc_common+0x138/0x258 [ 80.534372][ T5015] do_el0_svc+0x58/0x13c [ 80.535073][ T5015] el0_svc+0x78/0x1d0 [ 80.535665][ T5015] el0t_64_sync_handler+0xcc/0xe4 [ 80.536476][ T5015] el0t_64_sync+0x1a0/0x1a4 [ 80.537260][ T5015] irq event stamp: 80192 [ 80.537999][ T5015] hardirqs last enabled at (80191): [] __up_console_sem+0xb4/0xfc [ 80.539550][ T5015] hardirqs last disabled at (80192): [] el1_dbg+0x24/0x80 [ 80.541037][ T5015] softirqs last enabled at (80172): [] handle_softirqs+0xa40/0xbe4 [ 80.542506][ T5015] softirqs last disabled at (80071): [] __irq_exit_rcu+0x240/0x43c [ 80.543985][ T5015] ---[ end trace 9bf576fe55b8114e ]--- [ 80.546936][ T5015] BTRFS: error (device loop0) in __btrfs_unlink_inode:4182: errno=-12 Out of memory [ 80.548480][ T5015] BTRFS info (device loop0): forced readonly [ 80.694418][ T5037] loop0: detected capacity change from 0 to 32768 [ 80.724967][ T5037] BTRFS: device fsid c9fe44da-de57-406a-8241-57ec7d4412cf devid 1 transid 8 /dev/loop0 scanned by syz.0.20 (5037) [ 80.728745][ T5037] BTRFS info (device loop0): using crc32c (crc32c-generic) checksum algorithm [ 80.730278][ T5037] BTRFS info (device loop0): using free space tree [ 80.731304][ T5037] BTRFS info (device loop0): has skinny extents [ 80.745173][ T5037] BTRFS info (device loop0): enabling ssd optimizations [ 80.749952][ T5037] FAULT_INJECTION: forcing a failure. [ 80.749952][ T5037] name failslab, interval 1, probability 0, space 0, times 0 [ 80.751961][ T5037] CPU: 1 PID: 5037 Comm: syz.0.20 Tainted: G W syzkaller #0 [ 80.753346][ T5037] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/26/2026 [ 80.755056][ T5037] Call trace: [ 80.755631][ T5037] dump_backtrace+0x0/0x458 [ 80.756350][ T5037] show_stack+0x2c/0x3c [ 80.756974][ T5037] __dump_stack+0x30/0x40 [ 80.757706][ T5037] dump_stack_lvl+0xf4/0x15c [ 80.758438][ T5037] dump_stack+0x1c/0x5c [ 80.759067][ T5037] should_fail+0x3bc/0x514 [ 80.759872][ T5037] __should_failslab+0xbc/0x10c [ 80.760628][ T5037] should_failslab+0x10/0x28 [ 80.761390][ T5037] slab_pre_alloc_hook+0x64/0xe8 [ 80.762124][ T5037] kmem_cache_alloc_trace+0x98/0x3ec [ 80.762910][ T5037] btrfs_delete_delayed_dir_index+0x22c/0x56c [ 80.763995][ T5037] __btrfs_unlink_inode+0x350/0xaec [ 80.764831][ T5037] btrfs_unlink+0x108/0x258 [ 80.765552][ T5037] vfs_unlink+0x2e0/0x4f4 [ 80.766277][ T5037] do_unlinkat+0x328/0x618 [ 80.767137][ T5037] __arm64_sys_unlinkat+0xe0/0xfc [ 80.767950][ T5037] invoke_syscall+0x98/0x2b0 [ 80.768740][ T5037] el0_svc_common+0x138/0x258 [ 80.769486][ T5037] do_el0_svc+0x58/0x13c [ 80.770236][ T5037] el0_svc+0x78/0x1d0 [ 80.770910][ T5037] el0t_64_sync_handler+0xcc/0xe4 [ 80.771780][ T5037] el0t_64_sync+0x1a0/0x1a4 [ 80.775407][ T5037] ------------[ cut here ]------------ [ 80.776453][ T5037] WARNING: CPU: 1 PID: 5037 at fs/btrfs/inode.c:4182 __btrfs_unlink_inode+0x904/0xaec [ 80.777937][ T5037] Modules linked in: [ 80.778539][ T5037] CPU: 1 PID: 5037 Comm: syz.0.20 Tainted: G W syzkaller #0 [ 80.779970][ T5037] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/26/2026 [ 80.781733][ T5037] pstate: 62400005 (nZCv daif +PAN -UAO +TCO -DIT -SSBS BTYPE=--) [ 80.782963][ T5037] pc : __btrfs_unlink_inode+0x904/0xaec [ 80.783857][ T5037] lr : __btrfs_unlink_inode+0x904/0xaec [ 80.784818][ T5037] sp : ffff80001ff47a60 [ 80.785508][ T5037] x29: ffff80001ff47b10 x28: ffff0000cf2d4000 x27: ffff0000e25f0810 [ 80.786886][ T5037] x26: 0000000000000100 x25: 00000000fffffff4 x24: ffff0000d5ba2160 [ 80.788284][ T5037] x23: ffff700003fe8f54 x22: dfff800000000000 x21: ffff0000e279ce80 [ 80.789595][ T5037] x20: ffff0000de7e4738 x19: 1fffe0001bcfc8e7 x18: 0000000000000001 [ 80.790942][ T5037] x17: 0000000000000000 x16: ffff80001125a830 x15: 00000000ffffffff [ 80.792318][ T5037] x14: 0000000000000001 x13: 1fffe000341f47ab x12: 0000000000ff0100 [ 80.793673][ T5037] x11: 0000000000000000 x10: 0000000000000000 x9 : f7b7659958c2c600 [ 80.794959][ T5037] x8 : f7b7659958c2c600 x7 : 0000000000000001 x6 : 0000000000000001 [ 80.796279][ T5037] x5 : ffff80001ff47378 x4 : ffff80001437f3e0 x3 : ffff800008508edc [ 80.797529][ T5037] x2 : 0000000000000001 x1 : 0000000100000000 x0 : 0000000000000026 [ 80.798823][ T5037] Call trace: [ 80.799390][ T5037] __btrfs_unlink_inode+0x904/0xaec [ 80.800173][ T5037] btrfs_unlink+0x108/0x258 [ 80.801028][ T5037] vfs_unlink+0x2e0/0x4f4 [ 80.801694][ T5037] do_unlinkat+0x328/0x618 [ 80.802381][ T5037] __arm64_sys_unlinkat+0xe0/0xfc [ 80.803321][ T5037] invoke_syscall+0x98/0x2b0 [ 80.804168][ T5037] el0_svc_common+0x138/0x258 [ 80.804960][ T5037] do_el0_svc+0x58/0x13c [ 80.805646][ T5037] el0_svc+0x78/0x1d0 [ 80.806322][ T5037] el0t_64_sync_handler+0xcc/0xe4 [ 80.807228][ T5037] el0t_64_sync+0x1a0/0x1a4 [ 80.807993][ T5037] irq event stamp: 80188 [ 80.808651][ T5037] hardirqs last enabled at (80187): [] __up_console_sem+0xb4/0xfc [ 80.810176][ T5037] hardirqs last disabled at (80188): [] el1_dbg+0x24/0x80 [ 80.811700][ T5037] softirqs last enabled at (80168): [] handle_softirqs+0xa40/0xbe4 [ 80.813335][ T5037] softirqs last disabled at (80129): [] __irq_exit_rcu+0x240/0x43c [ 80.814933][ T5037] ---[ end trace 9bf576fe55b8114f ]--- [ 80.818187][ T5037] BTRFS: error (device loop0) in __btrfs_unlink_inode:4182: errno=-12 Out of memory [ 80.819743][ T5037] BTRFS info (device loop0): forced readonly [ 80.903677][ T4963] Bluetooth: hci0: command 0x0419 tx timeout [ 81.017099][ T5059] loop0: detected capacity change from 0 to 32768 [ 81.026521][ T5059] BTRFS: device fsid c9fe44da-de57-406a-8241-57ec7d4412cf devid 1 transid 8 /dev/loop0 scanned by syz.0.21 (5059) [ 81.030276][ T5059] BTRFS info (device loop0): using crc32c (crc32c-generic) checksum algorithm [ 81.032104][ T5059] BTRFS info (device loop0): using free space tree [ 81.033351][ T5059] BTRFS info (device loop0): has skinny extents [ 81.043569][ T5059] BTRFS info (device loop0): enabling ssd optimizations [ 81.048322][ T5059] FAULT_INJECTION: forcing a failure. [ 81.048322][ T5059] name failslab, interval 1, probability 0, space 0, times 0 [ 81.050341][ T5059] CPU: 0 PID: 5059 Comm: syz.0.21 Tainted: G W syzkaller #0 [ 81.051855][ T5059] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/26/2026 [ 81.053453][ T5059] Call trace: [ 81.054080][ T5059] dump_backtrace+0x0/0x458 [ 81.054847][ T5059] show_stack+0x2c/0x3c [ 81.055573][ T5059] __dump_stack+0x30/0x40 [ 81.056335][ T5059] dump_stack_lvl+0xf4/0x15c [ 81.057137][ T5059] dump_stack+0x1c/0x5c [ 81.057879][ T5059] should_fail+0x3bc/0x514 [ 81.058590][ T5059] __should_failslab+0xbc/0x10c [ 81.059354][ T5059] should_failslab+0x10/0x28 [ 81.060134][ T5059] slab_pre_alloc_hook+0x64/0xe8 [ 81.060876][ T5059] kmem_cache_alloc_trace+0x98/0x3ec [ 81.061731][ T5059] btrfs_delete_delayed_dir_index+0x22c/0x56c [ 81.062845][ T5059] __btrfs_unlink_inode+0x350/0xaec [ 81.063705][ T5059] btrfs_unlink+0x108/0x258 [ 81.064411][ T5059] vfs_unlink+0x2e0/0x4f4 [ 81.065127][ T5059] do_unlinkat+0x328/0x618 [ 81.065931][ T5059] __arm64_sys_unlinkat+0xe0/0xfc [ 81.066729][ T5059] invoke_syscall+0x98/0x2b0 [ 81.067531][ T5059] el0_svc_common+0x138/0x258 [ 81.068370][ T5059] do_el0_svc+0x58/0x13c [ 81.069062][ T5059] el0_svc+0x78/0x1d0 [ 81.069690][ T5059] el0t_64_sync_handler+0xcc/0xe4 [ 81.070622][ T5059] el0t_64_sync+0x1a0/0x1a4 [ 81.073186][ T5059] ------------[ cut here ]------------ [ 81.074338][ T5059] WARNING: CPU: 0 PID: 5059 at fs/btrfs/inode.c:4182 __btrfs_unlink_inode+0x904/0xaec [ 81.075884][ T5059] Modules linked in: [ 81.076512][ T5059] CPU: 0 PID: 5059 Comm: syz.0.21 Tainted: G W syzkaller #0 [ 81.077929][ T5059] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/26/2026 [ 81.079514][ T5059] pstate: 62400005 (nZCv daif +PAN -UAO +TCO -DIT -SSBS BTYPE=--) [ 81.080790][ T5059] pc : __btrfs_unlink_inode+0x904/0xaec [ 81.081655][ T5059] lr : __btrfs_unlink_inode+0x904/0xaec [ 81.082596][ T5059] sp : ffff800020457a60 [ 81.083271][ T5059] x29: ffff800020457b10 x28: ffff0000cbbc0000 x27: ffff0000ebdb8c10 [ 81.084673][ T5059] x26: 0000000000000100 x25: 00000000fffffff4 x24: ffff0000c9a4e420 [ 81.086075][ T5059] x23: ffff70000408af54 x22: dfff800000000000 x21: ffff0000e2741d70 [ 81.087512][ T5059] x20: ffff0000de5bd528 x19: 1fffe0001bcb7aa5 x18: 0000000000000001 [ 81.088791][ T5059] x17: 0000000000000000 x16: ffff80001125a830 x15: 00000000ffffffff [ 81.090145][ T5059] x14: 0000000000000001 x13: 1fffe000341f05ab x12: 0000000000ff0100 [ 81.091404][ T5059] x11: 0000000000000000 x10: 0000000000000000 x9 : 3c765b2141f57b00 [ 81.092679][ T5059] x8 : 3c765b2141f57b00 x7 : 0000000000000001 x6 : 0000000000000001 [ 81.094014][ T5059] x5 : ffff800020457378 x4 : ffff80001437f3e0 x3 : ffff800008508edc [ 81.095487][ T5059] x2 : 0000000000000001 x1 : 0000000100000000 x0 : 0000000000000026 [ 81.096839][ T5059] Call trace: [ 81.097369][ T5059] __btrfs_unlink_inode+0x904/0xaec [ 81.098261][ T5059] btrfs_unlink+0x108/0x258 [ 81.099041][ T5059] vfs_unlink+0x2e0/0x4f4 [ 81.099667][ T5059] do_unlinkat+0x328/0x618 [ 81.100554][ T5059] __arm64_sys_unlinkat+0xe0/0xfc [ 81.101354][ T5059] invoke_syscall+0x98/0x2b0 [ 81.102148][ T5059] el0_svc_common+0x138/0x258 [ 81.102936][ T5059] do_el0_svc+0x58/0x13c [ 81.103696][ T5059] el0_svc+0x78/0x1d0 [ 81.104402][ T5059] el0t_64_sync_handler+0xcc/0xe4 [ 81.105184][ T5059] el0t_64_sync+0x1a0/0x1a4 [ 81.105853][ T5059] irq event stamp: 81402 [ 81.106542][ T5059] hardirqs last enabled at (81401): [] __up_console_sem+0xb4/0xfc [ 81.108160][ T5059] hardirqs last disabled at (81402): [] el1_dbg+0x24/0x80 [ 81.109584][ T5059] softirqs last enabled at (81382): [] handle_softirqs+0xa40/0xbe4 [ 81.111130][ T5059] softirqs last disabled at (81261): [] __irq_exit_rcu+0x240/0x43c [ 81.112842][ T5059] ---[ end trace 9bf576fe55b81150 ]--- [ 81.115845][ T5059] BTRFS: error (device loop0) in __btrfs_unlink_inode:4182: errno=-12 Out of memory [ 81.117339][ T5059] BTRFS info (device loop0): forced readonly [ 81.280776][ T5081] loop0: detected capacity change from 0 to 32768 [ 81.324766][ T5081] BTRFS: device fsid c9fe44da-de57-406a-8241-57ec7d4412cf devid 1 transid 8 /dev/loop0 scanned by syz.0.22 (5081) [ 81.375106][ T5081] BTRFS info (device loop0): using crc32c (crc32c-generic) checksum algorithm [ 81.376538][ T5081] BTRFS info (device loop0): using free space tree [ 81.377593][ T5081] BTRFS info (device loop0): has skinny extents [ 81.393339][ T5081] BTRFS info (device loop0): enabling ssd optimizations [ 81.397769][ T5081] FAULT_INJECTION: forcing a failure. [ 81.397769][ T5081] name failslab, interval 1, probability 0, space 0, times 0 [ 81.399880][ T5081] CPU: 0 PID: 5081 Comm: syz.0.22 Tainted: G W syzkaller #0 [ 81.401359][ T5081] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/26/2026 [ 81.402903][ T5081] Call trace: [ 81.403454][ T5081] dump_backtrace+0x0/0x458 [ 81.404170][ T5081] show_stack+0x2c/0x3c [ 81.404827][ T5081] __dump_stack+0x30/0x40 [ 81.405508][ T5081] dump_stack_lvl+0xf4/0x15c [ 81.406328][ T5081] dump_stack+0x1c/0x5c [ 81.407061][ T5081] should_fail+0x3bc/0x514 [ 81.407812][ T5081] __should_failslab+0xbc/0x10c [ 81.408623][ T5081] should_failslab+0x10/0x28 [ 81.409389][ T5081] slab_pre_alloc_hook+0x64/0xe8 [ 81.410176][ T5081] kmem_cache_alloc_trace+0x98/0x3ec [ 81.411077][ T5081] btrfs_delete_delayed_dir_index+0x22c/0x56c [ 81.412094][ T5081] __btrfs_unlink_inode+0x350/0xaec [ 81.412936][ T5081] btrfs_unlink+0x108/0x258 [ 81.413592][ T5081] vfs_unlink+0x2e0/0x4f4 [ 81.414311][ T5081] do_unlinkat+0x328/0x618 [ 81.415112][ T5081] __arm64_sys_unlinkat+0xe0/0xfc [ 81.416044][ T5081] invoke_syscall+0x98/0x2b0 [ 81.416858][ T5081] el0_svc_common+0x138/0x258 [ 81.417671][ T5081] do_el0_svc+0x58/0x13c [ 81.418419][ T5081] el0_svc+0x78/0x1d0 [ 81.419109][ T5081] el0t_64_sync_handler+0xcc/0xe4 [ 81.419952][ T5081] el0t_64_sync+0x1a0/0x1a4 [ 81.421644][ T5081] ------------[ cut here ]------------ [ 81.422598][ T5081] WARNING: CPU: 0 PID: 5081 at fs/btrfs/inode.c:4182 __btrfs_unlink_inode+0x904/0xaec [ 81.424059][ T5081] Modules linked in: [ 81.424646][ T5081] CPU: 0 PID: 5081 Comm: syz.0.22 Tainted: G W syzkaller #0 [ 81.426033][ T5081] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/26/2026 [ 81.427827][ T5081] pstate: 62400005 (nZCv daif +PAN -UAO +TCO -DIT -SSBS BTYPE=--) [ 81.429185][ T5081] pc : __btrfs_unlink_inode+0x904/0xaec [ 81.430112][ T5081] lr : __btrfs_unlink_inode+0x904/0xaec [ 81.431117][ T5081] sp : ffff800020577a60 [ 81.431850][ T5081] x29: ffff800020577b10 x28: ffff0000cefd6000 x27: ffff0000ebdb9010 [ 81.433108][ T5081] x26: 0000000000000100 x25: 00000000fffffff4 x24: ffff0000cb3c3580 [ 81.434579][ T5081] x23: ffff7000040aef54 x22: dfff800000000000 x21: ffff0000e27444b0 [ 81.435954][ T5081] x20: ffff0000de5bd688 x19: 1fffe0001bcb7ad1 x18: 0000000000000001 [ 81.437208][ T5081] x17: 0000000000000000 x16: ffff80001125a830 x15: 00000000ffffffff [ 81.438517][ T5081] x14: 0000000000000001 x13: 1fffe000341f05ab x12: 0000000000ff0100 [ 81.439863][ T5081] x11: 0000000000000000 x10: 0000000000000000 x9 : 2b184349ce9ad800 [ 81.441256][ T5081] x8 : 2b184349ce9ad800 x7 : 0000000000000001 x6 : 0000000000000001 [ 81.442633][ T5081] x5 : ffff800020577378 x4 : ffff80001437f3e0 x3 : ffff800008508edc [ 81.443989][ T5081] x2 : 0000000000000001 x1 : 0000000100000000 x0 : 0000000000000026 [ 81.445290][ T5081] Call trace: [ 81.445828][ T5081] __btrfs_unlink_inode+0x904/0xaec [ 81.446725][ T5081] btrfs_unlink+0x108/0x258 [ 81.447458][ T5081] vfs_unlink+0x2e0/0x4f4 [ 81.448150][ T5081] do_unlinkat+0x328/0x618 [ 81.448866][ T5081] __arm64_sys_unlinkat+0xe0/0xfc [ 81.449627][ T5081] invoke_syscall+0x98/0x2b0 [ 81.450436][ T5081] el0_svc_common+0x138/0x258 [ 81.451203][ T5081] do_el0_svc+0x58/0x13c [ 81.451872][ T5081] el0_svc+0x78/0x1d0 [ 81.452528][ T5081] el0t_64_sync_handler+0xcc/0xe4 [ 81.453377][ T5081] el0t_64_sync+0x1a0/0x1a4 [ 81.454092][ T5081] irq event stamp: 81694 [ 81.454731][ T5081] hardirqs last enabled at (81693): [] __up_console_sem+0xb4/0xfc [ 81.456365][ T5081] hardirqs last disabled at (81694): [] el1_dbg+0x24/0x80 [ 81.457829][ T5081] softirqs last enabled at (81674): [] handle_softirqs+0xa40/0xbe4 [ 81.459415][ T5081] softirqs last disabled at (81627): [] __irq_exit_rcu+0x240/0x43c [ 81.461093][ T5081] ---[ end trace 9bf576fe55b81151 ]--- [ 81.463834][ T5081] BTRFS: error (device loop0) in __btrfs_unlink_inode:4182: errno=-12 Out of memory [ 81.465398][ T5081] BTRFS info (device loop0): forced readonly [ 81.615952][ T5103] loop0: detected capacity change from 0 to 32768 [ 81.620514][ T5103] BTRFS: device fsid c9fe44da-de57-406a-8241-57ec7d4412cf devid 1 transid 8 /dev/loop0 scanned by syz.0.23 (5103) [ 81.626971][ T9] device hsr_slave_0 left promiscuous mode [ 81.628671][ T5103] BTRFS info (device loop0): using crc32c (crc32c-generic) checksum algorithm [ 81.630295][ T5103] BTRFS info (device loop0): using free space tree [ 81.631382][ T5103] BTRFS info (device loop0): has skinny extents [ 81.639454][ T5103] BTRFS info (device loop0): enabling ssd optimizations [ 81.645732][ T5103] FAULT_INJECTION: forcing a failure. [ 81.645732][ T5103] name failslab, interval 1, probability 0, space 0, times 0 [ 81.647911][ T5103] CPU: 1 PID: 5103 Comm: syz.0.23 Tainted: G W syzkaller #0 [ 81.649350][ T5103] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/26/2026 [ 81.651169][ T5103] Call trace: [ 81.651702][ T5103] dump_backtrace+0x0/0x458 [ 81.652418][ T5103] show_stack+0x2c/0x3c [ 81.653073][ T5103] __dump_stack+0x30/0x40 [ 81.653794][ T5103] dump_stack_lvl+0xf4/0x15c [ 81.654527][ T5103] dump_stack+0x1c/0x5c [ 81.655276][ T5103] should_fail+0x3bc/0x514 [ 81.656023][ T5103] __should_failslab+0xbc/0x10c [ 81.656883][ T5103] should_failslab+0x10/0x28 [ 81.657678][ T5103] slab_pre_alloc_hook+0x64/0xe8 [ 81.658587][ T5103] kmem_cache_alloc_trace+0x98/0x3ec [ 81.659495][ T5103] btrfs_delete_delayed_dir_index+0x22c/0x56c [ 81.660569][ T5103] __btrfs_unlink_inode+0x350/0xaec [ 81.661510][ T5103] btrfs_unlink+0x108/0x258 [ 81.662295][ T5103] vfs_unlink+0x2e0/0x4f4 [ 81.663018][ T5103] do_unlinkat+0x328/0x618 [ 81.663817][ T5103] __arm64_sys_unlinkat+0xe0/0xfc [ 81.664601][ T5103] invoke_syscall+0x98/0x2b0 [ 81.665326][ T5103] el0_svc_common+0x138/0x258 [ 81.666132][ T5103] do_el0_svc+0x58/0x13c [ 81.666864][ T5103] el0_svc+0x78/0x1d0 [ 81.667570][ T5103] el0t_64_sync_handler+0xcc/0xe4 [ 81.668450][ T5103] el0t_64_sync+0x1a0/0x1a4 [ 81.671094][ T5103] ------------[ cut here ]------------ [ 81.672124][ T5103] WARNING: CPU: 1 PID: 5103 at fs/btrfs/inode.c:4182 __btrfs_unlink_inode+0x904/0xaec [ 81.673835][ T5103] Modules linked in: [ 81.674483][ T5103] CPU: 1 PID: 5103 Comm: syz.0.23 Tainted: G W syzkaller #0 [ 81.675920][ T5103] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/26/2026 [ 81.677601][ T5103] pstate: 62400005 (nZCv daif +PAN -UAO +TCO -DIT -SSBS BTYPE=--) [ 81.678915][ T5103] pc : __btrfs_unlink_inode+0x904/0xaec [ 81.679860][ T5103] lr : __btrfs_unlink_inode+0x904/0xaec [ 81.680804][ T5103] sp : ffff80001ff47a60 [ 81.681561][ T5103] x29: ffff80001ff47b10 x28: ffff0000cf704000 x27: ffff0000e25f0c10 [ 81.683018][ T5103] x26: 0000000000000100 x25: 00000000fffffff4 x24: ffff0000d5ad32c0 [ 81.684339][ T5103] x23: ffff700003fe8f54 x22: dfff800000000000 x21: ffff0000e279f5c0 [ 81.685750][ T5103] x20: ffff0000de7e4898 x19: 1fffe0001bcfc913 x18: 0000000000000001 [ 81.687113][ T5103] x17: 0000000000000000 x16: ffff80001125a830 x15: 00000000ffffffff [ 81.688477][ T5103] x14: 0000000000000001 x13: 1fffe000341f47ab x12: 0000000000ff0100 [ 81.689812][ T5103] x11: 0000000000000000 x10: 0000000000000000 x9 : f1c2c67d38693300 [ 81.691105][ T5103] x8 : f1c2c67d38693300 x7 : 0000000000000001 x6 : 0000000000000001 [ 81.692403][ T5103] x5 : ffff80001ff47378 x4 : ffff80001437f3e0 x3 : ffff800008508edc [ 81.693694][ T5103] x2 : 0000000000000001 x1 : 0000000100000000 x0 : 0000000000000026 [ 81.695105][ T5103] Call trace: [ 81.695705][ T5103] __btrfs_unlink_inode+0x904/0xaec [ 81.696568][ T5103] btrfs_unlink+0x108/0x258 [ 81.697310][ T5103] vfs_unlink+0x2e0/0x4f4 [ 81.698055][ T5103] do_unlinkat+0x328/0x618 [ 81.698776][ T5103] __arm64_sys_unlinkat+0xe0/0xfc [ 81.699642][ T5103] invoke_syscall+0x98/0x2b0 [ 81.700400][ T5103] el0_svc_common+0x138/0x258 [ 81.701257][ T5103] do_el0_svc+0x58/0x13c [ 81.701937][ T5103] el0_svc+0x78/0x1d0 [ 81.702595][ T5103] el0t_64_sync_handler+0xcc/0xe4 [ 81.703501][ T5103] el0t_64_sync+0x1a0/0x1a4 [ 81.704197][ T5103] irq event stamp: 80622 [ 81.704926][ T5103] hardirqs last enabled at (80621): [] __up_console_sem+0xb4/0xfc [ 81.706474][ T5103] hardirqs last disabled at (80622): [] el1_dbg+0x24/0x80 [ 81.707924][ T5103] softirqs last enabled at (80602): [] handle_softirqs+0xa40/0xbe4 [ 81.709481][ T5103] softirqs last disabled at (80445): [] __irq_exit_rcu+0x240/0x43c [ 81.711066][ T5103] ---[ end trace 9bf576fe55b81152 ]--- [ 81.712135][ T9] device hsr_slave_1 left promiscuous mode [ 81.714396][ T5103] BTRFS: error (device loop0) in __btrfs_unlink_inode:4182: errno=-12 Out of memory [ 81.715846][ T5103] BTRFS info (device loop0): forced readonly [ 81.773810][ T9] batman_adv: batadv0: Interface deactivated: batadv_slave_0 [ 81.775076][ T9] batman_adv: batadv0: Removing interface: batadv_slave_0 [ 81.776801][ T9] batman_adv: batadv0: Interface deactivated: batadv_slave_1 [ 81.778063][ T9] batman_adv: batadv0: Removing interface: batadv_slave_1 [ 81.779538][ T9] device bridge_slave_1 left promiscuous mode [ 81.780671][ T9] bridge0: port 2(bridge_slave_1) entered disabled state [ 81.833963][ T9] device bridge_slave_0 left promiscuous mode [ 81.835110][ T9] bridge0: port 1(bridge_slave_0) entered disabled state [ 81.855806][ T5125] loop0: detected capacity change from 0 to 32768 [ 81.924112][ T5125] BTRFS: device fsid c9fe44da-de57-406a-8241-57ec7d4412cf devid 1 transid 8 /dev/loop0 scanned by syz.0.24 (5125) [ 81.963264][ T9] device veth1_macvtap left promiscuous mode [ 81.964283][ T9] device veth0_macvtap left promiscuous mode [ 81.965269][ T9] device veth1_vlan left promiscuous mode [ 81.966342][ T9] device veth0_vlan left promiscuous mode [ 81.967148][ T5125] BTRFS info (device loop0): using crc32c (crc32c-generic) checksum algorithm [ 81.969041][ T5125] BTRFS info (device loop0): using free space tree [ 81.970122][ T5125] BTRFS info (device loop0): has skinny extents [ 81.981771][ T5125] BTRFS info (device loop0): enabling ssd optimizations [ 81.987557][ T5125] FAULT_INJECTION: forcing a failure. [ 81.987557][ T5125] name failslab, interval 1, probability 0, space 0, times 0 [ 81.989672][ T5125] CPU: 1 PID: 5125 Comm: syz.0.24 Tainted: G W syzkaller #0 [ 81.991112][ T5125] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/26/2026 [ 81.992739][ T5125] Call trace: [ 81.993231][ T5125] dump_backtrace+0x0/0x458 [ 81.994040][ T5125] show_stack+0x2c/0x3c [ 81.994741][ T5125] __dump_stack+0x30/0x40 [ 81.995438][ T5125] dump_stack_lvl+0xf4/0x15c [ 81.996180][ T5125] dump_stack+0x1c/0x5c [ 81.996925][ T5125] should_fail+0x3bc/0x514 [ 81.997663][ T5125] __should_failslab+0xbc/0x10c [ 81.998531][ T5125] should_failslab+0x10/0x28 [ 81.999255][ T5125] slab_pre_alloc_hook+0x64/0xe8 [ 82.000174][ T5125] kmem_cache_alloc_trace+0x98/0x3ec [ 82.001063][ T5125] btrfs_delete_delayed_dir_index+0x22c/0x56c [ 82.002073][ T5125] __btrfs_unlink_inode+0x350/0xaec [ 82.002984][ T5125] btrfs_unlink+0x108/0x258 [ 82.003781][ T5125] vfs_unlink+0x2e0/0x4f4 [ 82.004467][ T5125] do_unlinkat+0x328/0x618 [ 82.005192][ T5125] __arm64_sys_unlinkat+0xe0/0xfc [ 82.006086][ T5125] invoke_syscall+0x98/0x2b0 [ 82.006941][ T5125] el0_svc_common+0x138/0x258 [ 82.007749][ T5125] do_el0_svc+0x58/0x13c [ 82.008475][ T5125] el0_svc+0x78/0x1d0 [ 82.009182][ T5125] el0t_64_sync_handler+0xcc/0xe4 [ 82.010087][ T5125] el0t_64_sync+0x1a0/0x1a4 [ 82.013617][ T5125] ------------[ cut here ]------------ [ 82.014651][ T5125] WARNING: CPU: 1 PID: 5125 at fs/btrfs/inode.c:4182 __btrfs_unlink_inode+0x904/0xaec [ 82.016245][ T5125] Modules linked in: [ 82.016880][ T5125] CPU: 1 PID: 5125 Comm: syz.0.24 Tainted: G W syzkaller #0 [ 82.018275][ T5125] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/26/2026 [ 82.020005][ T5125] pstate: 62400005 (nZCv daif +PAN -UAO +TCO -DIT -SSBS BTYPE=--) [ 82.021327][ T5125] pc : __btrfs_unlink_inode+0x904/0xaec [ 82.022209][ T5125] lr : __btrfs_unlink_inode+0x904/0xaec [ 82.023133][ T5125] sp : ffff800020677a60 [ 82.023899][ T5125] x29: ffff800020677b10 x28: ffff0000d2a54000 x27: ffff0000e25f1010 [ 82.025256][ T5125] x26: 0000000000000100 x25: 00000000fffffff4 x24: ffff0000cb324420 [ 82.026644][ T5125] x23: ffff7000040cef54 x22: dfff800000000000 x21: ffff0000ebe013a0 [ 82.028029][ T5125] x20: ffff0000de7e49f8 x19: 1fffe0001bcfc93f x18: 0000000000000001 [ 82.029480][ T5125] x17: 0000000000000000 x16: ffff80001125a830 x15: 00000000ffffffff [ 82.030826][ T5125] x14: 0000000000000001 x13: 1fffe000341f47ab x12: 0000000000ff0100 [ 82.032233][ T5125] x11: 0000000000000000 x10: 0000000000000000 x9 : e9f6ad043add7700 [ 82.033547][ T5125] x8 : e9f6ad043add7700 x7 : 0000000000000001 x6 : 0000000000000001 [ 82.034952][ T5125] x5 : ffff800020677378 x4 : ffff80001437f3e0 x3 : ffff800008508edc [ 82.036377][ T5125] x2 : 0000000000000001 x1 : 0000000100000000 x0 : 0000000000000026 [ 82.037743][ T5125] Call trace: [ 82.038308][ T5125] __btrfs_unlink_inode+0x904/0xaec [ 82.039249][ T5125] btrfs_unlink+0x108/0x258 [ 82.040009][ T5125] vfs_unlink+0x2e0/0x4f4 [ 82.040760][ T5125] do_unlinkat+0x328/0x618 [ 82.041502][ T5125] __arm64_sys_unlinkat+0xe0/0xfc [ 82.042331][ T5125] invoke_syscall+0x98/0x2b0 [ 82.043078][ T5125] el0_svc_common+0x138/0x258 [ 82.043846][ T5125] do_el0_svc+0x58/0x13c [ 82.044546][ T5125] el0_svc+0x78/0x1d0 [ 82.045234][ T5125] el0t_64_sync_handler+0xcc/0xe4 [ 82.046091][ T5125] el0t_64_sync+0x1a0/0x1a4 [ 82.046891][ T5125] irq event stamp: 80924 [ 82.047643][ T5125] hardirqs last enabled at (80923): [] __up_console_sem+0xb4/0xfc [ 82.049264][ T5125] hardirqs last disabled at (80924): [] el1_dbg+0x24/0x80 [ 82.050763][ T5125] softirqs last enabled at (80904): [] handle_softirqs+0xa40/0xbe4 [ 82.052382][ T5125] softirqs last disabled at (80863): [] __irq_exit_rcu+0x240/0x43c [ 82.053985][ T5125] ---[ end trace 9bf576fe55b81153 ]--- [ 82.057416][ T5125] BTRFS: error (device loop0) in __btrfs_unlink_inode:4182: errno=-12 Out of memory [ 82.059030][ T5125] BTRFS info (device loop0): forced readonly [ 82.224116][ T9] team0 (unregistering): Port device team_slave_1 removed [ 82.229027][ T9] team0 (unregistering): Port device team_slave_0 removed [ 82.237228][ T9] bond0 (unregistering): (slave bond_slave_1): Releasing backup interface [ 82.278349][ T9] bond0 (unregistering): (slave bond_slave_0): Releasing backup interface [ 82.294595][ T5147] BTRFS: device fsid c9fe44da-de57-406a-8241-57ec7d4412cf devid 1 transid 8 /dev/loop0 scanned by syz.0.25 (5147) [ 82.350931][ T5147] BTRFS info (device loop0): using crc32c (crc32c-generic) checksum algorithm [ 82.352393][ T5147] BTRFS info (device loop0): using free space tree [ 82.354541][ T5147] BTRFS info (device loop0): has skinny extents [ 82.370367][ T9] bond0 (unregistering): Released all slaves [ 82.381898][ T5147] BTRFS info (device loop0): enabling ssd optimizations [ 82.386361][ T5147] FAULT_INJECTION: forcing a failure. [ 82.386361][ T5147] name failslab, interval 1, probability 0, space 0, times 0 [ 82.388288][ T5147] CPU: 0 PID: 5147 Comm: syz.0.25 Tainted: G W syzkaller #0 [ 82.389562][ T5147] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/26/2026 [ 82.391041][ T5147] Call trace: [ 82.391588][ T5147] dump_backtrace+0x0/0x458 [ 82.392419][ T5147] show_stack+0x2c/0x3c [ 82.393132][ T5147] __dump_stack+0x30/0x40 [ 82.393860][ T5147] dump_stack_lvl+0xf4/0x15c [ 82.394620][ T5147] dump_stack+0x1c/0x5c [ 82.395307][ T5147] should_fail+0x3bc/0x514 [ 82.396069][ T5147] __should_failslab+0xbc/0x10c [ 82.396894][ T5147] should_failslab+0x10/0x28 [ 82.397639][ T5147] slab_pre_alloc_hook+0x64/0xe8 [ 82.398423][ T5147] kmem_cache_alloc_trace+0x98/0x3ec [ 82.399220][ T5147] btrfs_delete_delayed_dir_index+0x22c/0x56c [ 82.400303][ T5147] __btrfs_unlink_inode+0x350/0xaec [ 82.401083][ T5147] btrfs_unlink+0x108/0x258 [ 82.401945][ T5147] vfs_unlink+0x2e0/0x4f4 [ 82.402625][ T5147] do_unlinkat+0x328/0x618 [ 82.403329][ T5147] __arm64_sys_unlinkat+0xe0/0xfc [ 82.404190][ T5147] invoke_syscall+0x98/0x2b0 [ 82.404960][ T5147] el0_svc_common+0x138/0x258 [ 82.405678][ T5147] do_el0_svc+0x58/0x13c [ 82.406319][ T5147] el0_svc+0x78/0x1d0 [ 82.407036][ T5147] el0t_64_sync_handler+0xcc/0xe4 [ 82.407923][ T5147] el0t_64_sync+0x1a0/0x1a4 [ 82.410146][ T5147] ------------[ cut here ]------------ [ 82.411214][ T5147] WARNING: CPU: 0 PID: 5147 at fs/btrfs/inode.c:4182 __btrfs_unlink_inode+0x904/0xaec [ 82.412688][ T5147] Modules linked in: [ 82.413346][ T5147] CPU: 0 PID: 5147 Comm: syz.0.25 Tainted: G W syzkaller #0 [ 82.414727][ T5147] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/26/2026 [ 82.416429][ T5147] pstate: 62400005 (nZCv daif +PAN -UAO +TCO -DIT -SSBS BTYPE=--) [ 82.417730][ T5147] pc : __btrfs_unlink_inode+0x904/0xaec [ 82.418673][ T5147] lr : __btrfs_unlink_inode+0x904/0xaec [ 82.419688][ T5147] sp : ffff8000207b7a60 [ 82.420361][ T5147] x29: ffff8000207b7b10 x28: ffff0000d6348000 x27: ffff0000ebdb9410 [ 82.421641][ T5147] x26: 0000000000000100 x25: 00000000fffffff4 x24: ffff0000d42ed790 [ 82.422918][ T5147] x23: ffff7000040f6f54 x22: dfff800000000000 x21: ffff0000e2746bf0 [ 82.424252][ T5147] x20: ffff0000de5bd7e8 x19: 1fffe0001bcb7afd x18: 0000000000000001 [ 82.425587][ T5147] x17: 0000000000000000 x16: ffff80001125a830 x15: 00000000ffffffff [ 82.426991][ T5147] x14: 0000000000000001 x13: 1fffe000341f05ab x12: 0000000000ff0100 [ 82.428332][ T5147] x11: 0000000000000000 x10: 0000000000000000 x9 : e903a10774cd1f00 [ 82.429634][ T5147] x8 : e903a10774cd1f00 x7 : 0000000000000001 x6 : 0000000000000001 [ 82.430948][ T5147] x5 : ffff8000207b7378 x4 : ffff80001437f3e0 x3 : ffff800008508edc [ 82.432315][ T5147] x2 : 0000000000000001 x1 : 0000000100000000 x0 : 0000000000000026 [ 82.433701][ T5147] Call trace: [ 82.434263][ T5147] __btrfs_unlink_inode+0x904/0xaec [ 82.435201][ T5147] btrfs_unlink+0x108/0x258 [ 82.435918][ T5147] vfs_unlink+0x2e0/0x4f4 [ 82.436642][ T5147] do_unlinkat+0x328/0x618 [ 82.437382][ T5147] __arm64_sys_unlinkat+0xe0/0xfc [ 82.438270][ T5147] invoke_syscall+0x98/0x2b0 [ 82.439046][ T5147] el0_svc_common+0x138/0x258 [ 82.439786][ T5147] do_el0_svc+0x58/0x13c [ 82.440449][ T5147] el0_svc+0x78/0x1d0 [ 82.441104][ T5147] el0t_64_sync_handler+0xcc/0xe4 [ 82.441931][ T5147] el0t_64_sync+0x1a0/0x1a4 [ 82.442719][ T5147] irq event stamp: 80424 [ 82.443402][ T5147] hardirqs last enabled at (80423): [] __up_console_sem+0xb4/0xfc [ 82.444896][ T5147] hardirqs last disabled at (80424): [] el1_dbg+0x24/0x80 [ 82.446315][ T5147] softirqs last enabled at (80404): [] handle_softirqs+0xa40/0xbe4 [ 82.447829][ T5147] softirqs last disabled at (80383): [] __irq_exit_rcu+0x240/0x43c [ 82.449421][ T5147] ---[ end trace 9bf576fe55b81154 ]--- [ 82.450569][ T5147] BTRFS: error (device loop0) in __btrfs_unlink_inode:4182: errno=-12 Out of memory [ 82.452117][ T5147] BTRFS info (device loop0): forced readonly [ 82.510493][ T4864] BTRFS: device fsid c9fe44da-de57-406a-8241-57ec7d4412cf devid 1 transid 8 /dev/loop0 scanned by udevd (4864) [ 82.703675][ T5170] BTRFS info (device loop0): using crc32c (crc32c-generic) checksum algorithm [ 82.705156][ T5170] BTRFS info (device loop0): using free space tree [ 82.706328][ T5170] BTRFS info (device loop0): has skinny extents [ 82.715045][ T5170] BTRFS info (device loop0): enabling ssd optimizations [ 82.719587][ T5170] FAULT_INJECTION: forcing a failure. [ 82.719587][ T5170] name failslab, interval 1, probability 0, space 0, times 0 [ 82.721760][ T5170] CPU: 0 PID: 5170 Comm: syz.0.26 Tainted: G W syzkaller #0 [ 82.723074][ T5170] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/26/2026 [ 82.724801][ T5170] Call trace: [ 82.725354][ T5170] dump_backtrace+0x0/0x458 [ 82.726145][ T5170] show_stack+0x2c/0x3c [ 82.726934][ T5170] __dump_stack+0x30/0x40 [ 82.727723][ T5170] dump_stack_lvl+0xf4/0x15c [ 82.728496][ T5170] dump_stack+0x1c/0x5c [ 82.729187][ T5170] should_fail+0x3bc/0x514 [ 82.729927][ T5170] __should_failslab+0xbc/0x10c [ 82.730686][ T5170] should_failslab+0x10/0x28 [ 82.731512][ T5170] slab_pre_alloc_hook+0x64/0xe8 [ 82.732314][ T5170] kmem_cache_alloc_trace+0x98/0x3ec [ 82.733221][ T5170] btrfs_delete_delayed_dir_index+0x22c/0x56c [ 82.734193][ T5170] __btrfs_unlink_inode+0x350/0xaec [ 82.735069][ T5170] btrfs_unlink+0x108/0x258 [ 82.735805][ T5170] vfs_unlink+0x2e0/0x4f4 [ 82.736508][ T5170] do_unlinkat+0x328/0x618 [ 82.737223][ T5170] __arm64_sys_unlinkat+0xe0/0xfc [ 82.738046][ T5170] invoke_syscall+0x98/0x2b0 [ 82.738808][ T5170] el0_svc_common+0x138/0x258 [ 82.739589][ T5170] do_el0_svc+0x58/0x13c [ 82.740304][ T5170] el0_svc+0x78/0x1d0 [ 82.740983][ T5170] el0t_64_sync_handler+0xcc/0xe4 [ 82.741926][ T5170] el0t_64_sync+0x1a0/0x1a4 [ 82.747106][ T5170] ------------[ cut here ]------------ [ 82.748095][ T5170] WARNING: CPU: 0 PID: 5170 at fs/btrfs/inode.c:4182 __btrfs_unlink_inode+0x904/0xaec [ 82.749520][ T5170] Modules linked in: [ 82.750207][ T5170] CPU: 0 PID: 5170 Comm: syz.0.26 Tainted: G W syzkaller #0 [ 82.751514][ T5170] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/26/2026 [ 82.753057][ T5170] pstate: 62400005 (nZCv daif +PAN -UAO +TCO -DIT -SSBS BTYPE=--) [ 82.754432][ T5170] pc : __btrfs_unlink_inode+0x904/0xaec [ 82.755337][ T5170] lr : __btrfs_unlink_inode+0x904/0xaec [ 82.756271][ T5170] sp : ffff800020887a60 [ 82.756982][ T5170] x29: ffff800020887b10 x28: ffff0000d7f54000 x27: ffff0000ebdb9810 [ 82.758346][ T5170] x26: 0000000000000100 x25: 00000000fffffff4 x24: ffff0000ccc628f0 [ 82.759633][ T5170] x23: ffff700004110f54 x22: dfff800000000000 x21: ffff0000ebde93a0 [ 82.760933][ T5170] x20: ffff0000de5bd948 x19: 1fffe0001bcb7b29 x18: 0000000000000001 [ 82.762217][ T5170] x17: 0000000000000000 x16: ffff80001125a830 x15: 00000000ffffffff [ 82.763497][ T5170] x14: 0000000000000001 x13: 1fffe000341f05ab x12: 0000000000ff0100 [ 82.764756][ T5170] x11: 0000000000000000 x10: 0000000000000000 x9 : 3e70bd6cab48e000 [ 82.766059][ T5170] x8 : 3e70bd6cab48e000 x7 : 0000000000000001 x6 : 0000000000000001 [ 82.767321][ T5170] x5 : ffff800020887378 x4 : ffff80001437f3e0 x3 : ffff800008508edc [ 82.768617][ T5170] x2 : 0000000000000001 x1 : 0000000100000000 x0 : 0000000000000026 [ 82.769965][ T5170] Call trace: [ 82.770503][ T5170] __btrfs_unlink_inode+0x904/0xaec [ 82.771340][ T5170] btrfs_unlink+0x108/0x258 [ 82.772133][ T5170] vfs_unlink+0x2e0/0x4f4 [ 82.772837][ T5170] do_unlinkat+0x328/0x618 [ 82.773545][ T5170] __arm64_sys_unlinkat+0xe0/0xfc [ 82.774363][ T5170] invoke_syscall+0x98/0x2b0 [ 82.775163][ T5170] el0_svc_common+0x138/0x258 [ 82.776054][ T5170] do_el0_svc+0x58/0x13c [ 82.776730][ T5170] el0_svc+0x78/0x1d0 [ 82.777460][ T5170] el0t_64_sync_handler+0xcc/0xe4 [ 82.778273][ T5170] el0t_64_sync+0x1a0/0x1a4 [ 82.779022][ T5170] irq event stamp: 80688 [ 82.779732][ T5170] hardirqs last enabled at (80687): [] __up_console_sem+0xb4/0xfc [ 82.781356][ T5170] hardirqs last disabled at (80688): [] el1_dbg+0x24/0x80 [ 82.782711][ T5170] softirqs last enabled at (80668): [] handle_softirqs+0xa40/0xbe4 [ 82.784240][ T5170] softirqs last disabled at (80649): [] __irq_exit_rcu+0x240/0x43c [ 82.785675][ T5170] ---[ end trace 9bf576fe55b81155 ]--- [ 82.789475][ T5170] BTRFS: error (device loop0) in __btrfs_unlink_inode:4182: errno=-12 Out of memory [ 82.791144][ T5170] BTRFS info (device loop0): forced readonly [ 82.998551][ T5193] BTRFS: device fsid c9fe44da-de57-406a-8241-57ec7d4412cf devid 1 transid 8 /dev/loop0 scanned by syz.0.27 (5193) [ 83.003477][ T5193] BTRFS info (device loop0): using crc32c (crc32c-generic) checksum algorithm [ 83.004967][ T5193] BTRFS info (device loop0): using free space tree [ 83.006012][ T5193] BTRFS info (device loop0): has skinny extents [ 83.022014][ T5193] BTRFS info (device loop0): enabling ssd optimizations [ 83.026531][ T5193] FAULT_INJECTION: forcing a failure. [ 83.026531][ T5193] name failslab, interval 1, probability 0, space 0, times 0 [ 83.028697][ T5193] CPU: 1 PID: 5193 Comm: syz.0.27 Tainted: G W syzkaller #0 [ 83.030103][ T5193] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/26/2026 [ 83.031666][ T5193] Call trace: [ 83.032215][ T5193] dump_backtrace+0x0/0x458 [ 83.032929][ T5193] show_stack+0x2c/0x3c [ 83.033635][ T5193] __dump_stack+0x30/0x40 [ 83.034363][ T5193] dump_stack_lvl+0xf4/0x15c [ 83.035147][ T5193] dump_stack+0x1c/0x5c [ 83.035874][ T5193] should_fail+0x3bc/0x514 [ 83.036639][ T5193] __should_failslab+0xbc/0x10c [ 83.037494][ T5193] should_failslab+0x10/0x28 [ 83.038313][ T5193] slab_pre_alloc_hook+0x64/0xe8 [ 83.039237][ T5193] kmem_cache_alloc_trace+0x98/0x3ec [ 83.040088][ T5193] btrfs_delete_delayed_dir_index+0x22c/0x56c [ 83.041006][ T5193] __btrfs_unlink_inode+0x350/0xaec [ 83.041859][ T5193] btrfs_unlink+0x108/0x258 [ 83.042539][ T5193] vfs_unlink+0x2e0/0x4f4 [ 83.043208][ T5193] do_unlinkat+0x328/0x618 [ 83.043993][ T5193] __arm64_sys_unlinkat+0xe0/0xfc [ 83.044846][ T5193] invoke_syscall+0x98/0x2b0 [ 83.045658][ T5193] el0_svc_common+0x138/0x258 [ 83.046459][ T5193] do_el0_svc+0x58/0x13c [ 83.047161][ T5193] el0_svc+0x78/0x1d0 [ 83.047803][ T5193] el0t_64_sync_handler+0xcc/0xe4 [ 83.048644][ T5193] el0t_64_sync+0x1a0/0x1a4 [ 83.052237][ T5193] ------------[ cut here ]------------ [ 83.053256][ T5193] WARNING: CPU: 1 PID: 5193 at fs/btrfs/inode.c:4182 __btrfs_unlink_inode+0x904/0xaec [ 83.054737][ T5193] Modules linked in: [ 83.055374][ T5193] CPU: 1 PID: 5193 Comm: syz.0.27 Tainted: G W syzkaller #0 [ 83.056692][ T5193] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/26/2026 [ 83.058384][ T5193] pstate: 62400005 (nZCv daif +PAN -UAO +TCO -DIT -SSBS BTYPE=--) [ 83.059777][ T5193] pc : __btrfs_unlink_inode+0x904/0xaec [ 83.060634][ T5193] lr : __btrfs_unlink_inode+0x904/0xaec [ 83.061523][ T5193] sp : ffff80001f727a60 [ 83.062220][ T5193] x29: ffff80001f727b10 x28: ffff0000d260e000 x27: ffff0000e25f1410 [ 83.063644][ T5193] x26: 0000000000000100 x25: 00000000fffffff4 x24: ffff0000ebbff420 [ 83.064961][ T5193] x23: ffff700003ee4f54 x22: dfff800000000000 x21: ffff0000ebe03ae0 [ 83.066295][ T5193] x20: ffff0000de7e4b58 x19: 1fffe0001bcfc96b x18: 0000000000000001 [ 83.067653][ T5193] x17: 0000000000000000 x16: ffff80001125a830 x15: 00000000ffffffff [ 83.069029][ T5193] x14: 0000000000000001 x13: 1fffe000341f47ab x12: 0000000000ff0100 [ 83.070414][ T5193] x11: 0000000000000000 x10: 0000000000000000 x9 : 789c5d8c2427cd00 [ 83.071802][ T5193] x8 : 789c5d8c2427cd00 x7 : 0000000000000001 x6 : 0000000000000001 [ 83.073117][ T5193] x5 : ffff80001f727378 x4 : ffff80001437f3e0 x3 : ffff800008508edc [ 83.074546][ T5193] x2 : 0000000000000001 x1 : 0000000100000000 x0 : 0000000000000026 [ 83.075953][ T5193] Call trace: [ 83.076494][ T5193] __btrfs_unlink_inode+0x904/0xaec [ 83.077403][ T5193] btrfs_unlink+0x108/0x258 [ 83.078177][ T5193] vfs_unlink+0x2e0/0x4f4 [ 83.078897][ T5193] do_unlinkat+0x328/0x618 [ 83.079570][ T5193] __arm64_sys_unlinkat+0xe0/0xfc [ 83.080438][ T5193] invoke_syscall+0x98/0x2b0 [ 83.081242][ T5193] el0_svc_common+0x138/0x258 [ 83.082049][ T5193] do_el0_svc+0x58/0x13c [ 83.082744][ T5193] el0_svc+0x78/0x1d0 [ 83.083477][ T5193] el0t_64_sync_handler+0xcc/0xe4 [ 83.084359][ T5193] el0t_64_sync+0x1a0/0x1a4 [ 83.085103][ T5193] irq event stamp: 81938 [ 83.085911][ T5193] hardirqs last enabled at (81937): [] __up_console_sem+0xb4/0xfc [ 83.087451][ T5193] hardirqs last disabled at (81938): [] el1_dbg+0x24/0x80 [ 83.088807][ T5193] softirqs last enabled at (81916): [] handle_softirqs+0xa40/0xbe4 [ 83.090446][ T5193] softirqs last disabled at (81805): [] __irq_exit_rcu+0x240/0x43c [ 83.092088][ T5193] ---[ end trace 9bf576fe55b81156 ]--- [ 83.094578][ T5193] BTRFS: error (device loop0) in __btrfs_unlink_inode:4182: errno=-12 Out of memory [ 83.096178][ T5193] BTRFS info (device loop0): forced readonly [ 83.245829][ T5215] BTRFS: device fsid c9fe44da-de57-406a-8241-57ec7d4412cf devid 1 transid 8 /dev/loop0 scanned by syz.0.28 (5215) [ 83.249877][ T5215] BTRFS info (device loop0): using crc32c (crc32c-generic) checksum algorithm [ 83.251311][ T5215] BTRFS info (device loop0): using free space tree [ 83.252384][ T5215] BTRFS info (device loop0): has skinny extents [ 83.268592][ T5215] BTRFS info (device loop0): enabling ssd optimizations [ 83.275189][ T5215] FAULT_INJECTION: forcing a failure. [ 83.275189][ T5215] name failslab, interval 1, probability 0, space 0, times 0 [ 83.277275][ T5215] CPU: 0 PID: 5215 Comm: syz.0.28 Tainted: G W syzkaller #0 [ 83.278714][ T5215] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/26/2026 [ 83.280384][ T5215] Call trace: [ 83.280907][ T5215] dump_backtrace+0x0/0x458 [ 83.281666][ T5215] show_stack+0x2c/0x3c [ 83.282275][ T5215] __dump_stack+0x30/0x40 [ 83.282955][ T5215] dump_stack_lvl+0xf4/0x15c [ 83.283678][ T5215] dump_stack+0x1c/0x5c [ 83.284375][ T5215] should_fail+0x3bc/0x514 [ 83.285103][ T5215] __should_failslab+0xbc/0x10c [ 83.285956][ T5215] should_failslab+0x10/0x28 [ 83.286693][ T5215] slab_pre_alloc_hook+0x64/0xe8 [ 83.287565][ T5215] kmem_cache_alloc_trace+0x98/0x3ec [ 83.288444][ T5215] btrfs_delete_delayed_dir_index+0x22c/0x56c [ 83.289516][ T5215] __btrfs_unlink_inode+0x350/0xaec [ 83.290403][ T5215] btrfs_unlink+0x108/0x258 [ 83.291256][ T5215] vfs_unlink+0x2e0/0x4f4 [ 83.292034][ T5215] do_unlinkat+0x328/0x618 [ 83.292777][ T5215] __arm64_sys_unlinkat+0xe0/0xfc [ 83.293625][ T5215] invoke_syscall+0x98/0x2b0 [ 83.294419][ T5215] el0_svc_common+0x138/0x258 [ 83.295238][ T5215] do_el0_svc+0x58/0x13c [ 83.295918][ T5215] el0_svc+0x78/0x1d0 [ 83.296582][ T5215] el0t_64_sync_handler+0xcc/0xe4 [ 83.297415][ T5215] el0t_64_sync+0x1a0/0x1a4 [ 83.300596][ T5215] ------------[ cut here ]------------ [ 83.301604][ T5215] WARNING: CPU: 0 PID: 5215 at fs/btrfs/inode.c:4182 __btrfs_unlink_inode+0x904/0xaec [ 83.303161][ T5215] Modules linked in: [ 83.303833][ T5215] CPU: 0 PID: 5215 Comm: syz.0.28 Tainted: G W syzkaller #0 [ 83.305354][ T5215] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/26/2026 [ 83.306919][ T5215] pstate: 62400005 (nZCv daif +PAN -UAO +TCO -DIT -SSBS BTYPE=--) [ 83.308181][ T5215] pc : __btrfs_unlink_inode+0x904/0xaec [ 83.309059][ T5215] lr : __btrfs_unlink_inode+0x904/0xaec [ 83.310026][ T5215] sp : ffff80001f727a60 [ 83.310644][ T5215] x29: ffff80001f727b10 x28: ffff0000d1a26000 x27: ffff0000ebdb9c10 [ 83.312060][ T5215] x26: 0000000000000100 x25: 00000000fffffff4 x24: ffff0000c1cdb370 [ 83.313461][ T5215] x23: ffff700003ee4f54 x22: dfff800000000000 x21: ffff0000ebdebae0 [ 83.314774][ T5215] x20: ffff0000de5bd1b8 x19: 1fffe0001bcb7a37 x18: 0000000000000001 [ 83.316162][ T5215] x17: 0000000000000000 x16: ffff80001125a830 x15: 00000000ffffffff [ 83.317571][ T5215] x14: 0000000000000001 x13: 1fffe000341f05ab x12: 0000000000ff0100 [ 83.319003][ T5215] x11: 0000000000000000 x10: 0000000000000000 x9 : 5213074a5061fd00 [ 83.320388][ T5215] x8 : 5213074a5061fd00 x7 : 0000000000000001 x6 : 0000000000000001 [ 83.321852][ T5215] x5 : ffff80001f727378 x4 : ffff80001437f3e0 x3 : ffff800008508edc [ 83.323285][ T5215] x2 : 0000000000000001 x1 : 0000000100000000 x0 : 0000000000000026 [ 83.324669][ T5215] Call trace: [ 83.325291][ T5215] __btrfs_unlink_inode+0x904/0xaec [ 83.326217][ T5215] btrfs_unlink+0x108/0x258 [ 83.326987][ T5215] vfs_unlink+0x2e0/0x4f4 [ 83.327721][ T5215] do_unlinkat+0x328/0x618 [ 83.328534][ T5215] __arm64_sys_unlinkat+0xe0/0xfc [ 83.329439][ T5215] invoke_syscall+0x98/0x2b0 [ 83.330230][ T5215] el0_svc_common+0x138/0x258 [ 83.331079][ T5215] do_el0_svc+0x58/0x13c [ 83.331727][ T5215] el0_svc+0x78/0x1d0 [ 83.332435][ T5215] el0t_64_sync_handler+0xcc/0xe4 [ 83.333288][ T5215] el0t_64_sync+0x1a0/0x1a4 [ 83.333896][ T5215] irq event stamp: 80106 [ 83.334630][ T5215] hardirqs last enabled at (80105): [] __up_console_sem+0xb4/0xfc [ 83.336376][ T5215] hardirqs last disabled at (80106): [] el1_dbg+0x24/0x80 [ 83.337642][ T5215] softirqs last enabled at (80086): [] handle_softirqs+0xa40/0xbe4 [ 83.339070][ T5215] softirqs last disabled at (79915): [] __irq_exit_rcu+0x240/0x43c [ 83.340748][ T5215] ---[ end trace 9bf576fe55b81157 ]--- [ 83.342763][ T5215] BTRFS: error (device loop0) in __btrfs_unlink_inode:4182: errno=-12 Out of memory [ 83.344641][ T5215] BTRFS info (device loop0): forced readonly [ 83.591331][ T5236] BTRFS: device fsid c9fe44da-de57-406a-8241-57ec7d4412cf devid 1 transid 8 /dev/loop0 scanned by syz.0.29 (5236) [ 83.598651][ T5236] BTRFS info (device loop0): using crc32c (crc32c-generic) checksum algorithm [ 83.600203][ T5236] BTRFS info (device loop0): using free space tree [ 83.601216][ T5236] BTRFS info (device loop0): has skinny extents [ 83.614066][ T5236] BTRFS info (device loop0): enabling ssd optimizations [ 83.618368][ T5236] FAULT_INJECTION: forcing a failure. [ 83.618368][ T5236] name failslab, interval 1, probability 0, space 0, times 0 [ 83.620430][ T5236] CPU: 0 PID: 5236 Comm: syz.0.29 Tainted: G W syzkaller #0 [ 83.621874][ T5236] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/26/2026 [ 83.623594][ T5236] Call trace: [ 83.624096][ T5236] dump_backtrace+0x0/0x458 [ 83.624808][ T5236] show_stack+0x2c/0x3c [ 83.625471][ T5236] __dump_stack+0x30/0x40 [ 83.626157][ T5236] dump_stack_lvl+0xf4/0x15c [ 83.626984][ T5236] dump_stack+0x1c/0x5c [ 83.627658][ T5236] should_fail+0x3bc/0x514 [ 83.628412][ T5236] __should_failslab+0xbc/0x10c [ 83.629209][ T5236] should_failslab+0x10/0x28 [ 83.629963][ T5236] slab_pre_alloc_hook+0x64/0xe8 [ 83.630792][ T5236] kmem_cache_alloc_trace+0x98/0x3ec [ 83.631767][ T5236] btrfs_delete_delayed_dir_index+0x22c/0x56c [ 83.632769][ T5236] __btrfs_unlink_inode+0x350/0xaec [ 83.633647][ T5236] btrfs_unlink+0x108/0x258 [ 83.634374][ T5236] vfs_unlink+0x2e0/0x4f4 [ 83.635101][ T5236] do_unlinkat+0x328/0x618 [ 83.635797][ T5236] __arm64_sys_unlinkat+0xe0/0xfc [ 83.636631][ T5236] invoke_syscall+0x98/0x2b0 [ 83.637394][ T5236] el0_svc_common+0x138/0x258 [ 83.638196][ T5236] do_el0_svc+0x58/0x13c [ 83.638952][ T5236] el0_svc+0x78/0x1d0 [ 83.639663][ T5236] el0t_64_sync_handler+0xcc/0xe4 [ 83.640503][ T5236] el0t_64_sync+0x1a0/0x1a4 [ 83.641799][ T5236] ------------[ cut here ]------------ [ 83.642788][ T5236] WARNING: CPU: 0 PID: 5236 at fs/btrfs/inode.c:4182 __btrfs_unlink_inode+0x904/0xaec [ 83.644280][ T5236] Modules linked in: [ 83.644943][ T5236] CPU: 0 PID: 5236 Comm: syz.0.29 Tainted: G W syzkaller #0 [ 83.646450][ T5236] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/26/2026 [ 83.648096][ T5236] pstate: 62400005 (nZCv daif +PAN -UAO +TCO -DIT -SSBS BTYPE=--) [ 83.649400][ T5236] pc : __btrfs_unlink_inode+0x904/0xaec [ 83.650260][ T5236] lr : __btrfs_unlink_inode+0x904/0xaec [ 83.651156][ T5236] sp : ffff800020d07a60 [ 83.651894][ T5236] x29: ffff800020d07b10 x28: ffff0000dd76a000 x27: ffff0000ebdba010 [ 83.653217][ T5236] x26: 0000000000000100 x25: 00000000fffffff4 x24: ffff0000c8c144d0 [ 83.654680][ T5236] x23: ffff7000041a0f54 x22: dfff800000000000 x21: ffff0000ebded850 [ 83.655980][ T5236] x20: ffff0000de5bdaa8 x19: 1fffe0001bcb7b55 x18: 0000000000000001 [ 83.657222][ T5236] x17: 0000000000000000 x16: ffff80001125a830 x15: 00000000ffffffff [ 83.658575][ T5236] x14: 0000000000000001 x13: 1fffe000341f05ab x12: 0000000000ff0100 [ 83.659936][ T5236] x11: 0000000000000000 x10: 0000000000000000 x9 : a1d9803454972e00 [ 83.661272][ T5236] x8 : a1d9803454972e00 x7 : 0000000000000001 x6 : 0000000000000001 [ 83.662614][ T5236] x5 : ffff800020d07378 x4 : ffff80001437f3e0 x3 : ffff800008508edc [ 83.663972][ T5236] x2 : 0000000000000001 x1 : 0000000100000000 x0 : 0000000000000026 [ 83.665349][ T5236] Call trace: [ 83.665882][ T5236] __btrfs_unlink_inode+0x904/0xaec [ 83.666702][ T5236] btrfs_unlink+0x108/0x258 [ 83.667414][ T5236] vfs_unlink+0x2e0/0x4f4 [ 83.668158][ T5236] do_unlinkat+0x328/0x618 [ 83.669023][ T5236] __arm64_sys_unlinkat+0xe0/0xfc [ 83.669793][ T5236] invoke_syscall+0x98/0x2b0 [ 83.670576][ T5236] el0_svc_common+0x138/0x258 [ 83.671482][ T5236] do_el0_svc+0x58/0x13c [ 83.672220][ T5236] el0_svc+0x78/0x1d0 [ 83.672879][ T5236] el0t_64_sync_handler+0xcc/0xe4 [ 83.673747][ T5236] el0t_64_sync+0x1a0/0x1a4 [ 83.674514][ T5236] irq event stamp: 80936 [ 83.675227][ T5236] hardirqs last enabled at (80935): [] __up_console_sem+0xb4/0xfc [ 83.676897][ T5236] hardirqs last disabled at (80936): [] el1_dbg+0x24/0x80 [ 83.678444][ T5236] softirqs last enabled at (80916): [] handle_softirqs+0xa40/0xbe4 [ 83.680063][ T5236] softirqs last disabled at (80805): [] __irq_exit_rcu+0x240/0x43c [ 83.681597][ T5236] ---[ end trace 9bf576fe55b81158 ]--- [ 83.683233][ T5236] BTRFS: error (device loop0) in __btrfs_unlink_inode:4182: errno=-12 Out of memory [ 83.684872][ T5236] BTRFS info (device loop0): forced readonly [ 83.864547][ T5258] BTRFS: device fsid c9fe44da-de57-406a-8241-57ec7d4412cf devid 1 transid 8 /dev/loop0 scanned by syz.0.30 (5258) [ 83.868125][ T5258] BTRFS info (device loop0): using crc32c (crc32c-generic) checksum algorithm [ 83.869576][ T5258] BTRFS info (device loop0): using free space tree [ 83.870772][ T5258] BTRFS info (device loop0): has skinny extents [ 83.879638][ T5258] BTRFS info (device loop0): enabling ssd optimizations [ 83.887322][ T5258] FAULT_INJECTION: forcing a failure. [ 83.887322][ T5258] name failslab, interval 1, probability 0, space 0, times 0 [ 83.889598][ T5258] CPU: 0 PID: 5258 Comm: syz.0.30 Tainted: G W syzkaller #0 [ 83.890978][ T5258] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/26/2026 [ 83.892565][ T5258] Call trace: [ 83.893091][ T5258] dump_backtrace+0x0/0x458 [ 83.893810][ T5258] show_stack+0x2c/0x3c [ 83.894421][ T5258] __dump_stack+0x30/0x40 [ 83.895178][ T5258] dump_stack_lvl+0xf4/0x15c [ 83.895945][ T5258] dump_stack+0x1c/0x5c [ 83.896620][ T5258] should_fail+0x3bc/0x514 [ 83.897351][ T5258] __should_failslab+0xbc/0x10c [ 83.898160][ T5258] should_failslab+0x10/0x28 [ 83.898942][ T5258] slab_pre_alloc_hook+0x64/0xe8 [ 83.899795][ T5258] kmem_cache_alloc_trace+0x98/0x3ec [ 83.900647][ T5258] btrfs_delete_delayed_dir_index+0x22c/0x56c [ 83.901584][ T5258] __btrfs_unlink_inode+0x350/0xaec [ 83.902529][ T5258] btrfs_unlink+0x108/0x258 [ 83.903384][ T5258] vfs_unlink+0x2e0/0x4f4 [ 83.904116][ T5258] do_unlinkat+0x328/0x618 [ 83.904825][ T5258] __arm64_sys_unlinkat+0xe0/0xfc [ 83.905649][ T5258] invoke_syscall+0x98/0x2b0 [ 83.906398][ T5258] el0_svc_common+0x138/0x258 [ 83.907209][ T5258] do_el0_svc+0x58/0x13c [ 83.907932][ T5258] el0_svc+0x78/0x1d0 [ 83.908595][ T5258] el0t_64_sync_handler+0xcc/0xe4 [ 83.909389][ T5258] el0t_64_sync+0x1a0/0x1a4 [ 83.910797][ T5258] ------------[ cut here ]------------ [ 83.911817][ T5258] WARNING: CPU: 0 PID: 5258 at fs/btrfs/inode.c:4182 __btrfs_unlink_inode+0x904/0xaec [ 83.913247][ T5258] Modules linked in: [ 83.913834][ T5258] CPU: 0 PID: 5258 Comm: syz.0.30 Tainted: G W syzkaller #0 [ 83.915165][ T5258] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/26/2026 [ 83.916873][ T5258] pstate: 62400005 (nZCv daif +PAN -UAO +TCO -DIT -SSBS BTYPE=--) [ 83.918190][ T5258] pc : __btrfs_unlink_inode+0x904/0xaec [ 83.919087][ T5258] lr : __btrfs_unlink_inode+0x904/0xaec [ 83.920026][ T5258] sp : ffff80001f727a60 [ 83.920679][ T5258] x29: ffff80001f727b10 x28: ffff0000c1ea6000 x27: ffff0000ebdba410 [ 83.922037][ T5258] x26: 0000000000000100 x25: 00000000fffffff4 x24: ffff0000de357e70 [ 83.923470][ T5258] x23: ffff700003ee4f54 x22: dfff800000000000 x21: ffff0000ebdef5c0 [ 83.924676][ T5258] x20: ffff0000de5bdc08 x19: 1fffe0001bcb7b81 x18: 0000000000000001 [ 83.925912][ T5258] x17: 0000000000000000 x16: ffff80001125a830 x15: 00000000ffffffff [ 83.927221][ T5258] x14: 0000000000000001 x13: 1fffe000341f05ab x12: 0000000000ff0100 [ 83.928488][ T5258] x11: 0000000000000000 x10: 0000000000000000 x9 : 0f0e04ec86124500 [ 83.929731][ T5258] x8 : 0f0e04ec86124500 x7 : 0000000000000001 x6 : 0000000000000001 [ 83.931047][ T5258] x5 : ffff80001f727378 x4 : ffff80001437f3e0 x3 : ffff800008508edc [ 83.932337][ T5258] x2 : 0000000000000001 x1 : 0000000100000000 x0 : 0000000000000026 [ 83.933738][ T5258] Call trace: [ 83.934310][ T5258] __btrfs_unlink_inode+0x904/0xaec [ 83.935104][ T5258] btrfs_unlink+0x108/0x258 [ 83.935796][ T5258] vfs_unlink+0x2e0/0x4f4 [ 83.936483][ T5258] do_unlinkat+0x328/0x618 [ 83.937164][ T5258] __arm64_sys_unlinkat+0xe0/0xfc [ 83.938018][ T5258] invoke_syscall+0x98/0x2b0 [ 83.938836][ T5258] el0_svc_common+0x138/0x258 [ 83.939615][ T5258] do_el0_svc+0x58/0x13c [ 83.940363][ T5258] el0_svc+0x78/0x1d0 [ 83.941035][ T5258] el0t_64_sync_handler+0xcc/0xe4 [ 83.941798][ T5258] el0t_64_sync+0x1a0/0x1a4 [ 83.942585][ T5258] irq event stamp: 80584 [ 83.943261][ T5258] hardirqs last enabled at (80583): [] __up_console_sem+0xb4/0xfc [ 83.944782][ T5258] hardirqs last disabled at (80584): [] el1_dbg+0x24/0x80 [ 83.946117][ T5258] softirqs last enabled at (80564): [] handle_softirqs+0xa40/0xbe4 [ 83.947639][ T5258] softirqs last disabled at (80437): [] __irq_exit_rcu+0x240/0x43c [ 83.949252][ T5258] ---[ end trace 9bf576fe55b81159 ]--- [ 83.950809][ T5258] BTRFS: error (device loop0) in __btrfs_unlink_inode:4182: errno=-12 Out of memory [ 83.952356][ T5258] BTRFS info (device loop0): forced readonly [ 84.150079][ T5279] BTRFS: device fsid c9fe44da-de57-406a-8241-57ec7d4412cf devid 1 transid 8 /dev/loop0 scanned by syz.0.31 (5279) [ 84.159708][ T5279] BTRFS info (device loop0): using crc32c (crc32c-generic) checksum algorithm [ 84.161262][ T5279] BTRFS info (device loop0): using free space tree [ 84.162287][ T5279] BTRFS info (device loop0): has skinny extents [ 84.223964][ T5279] BTRFS info (device loop0): enabling ssd optimizations [ 84.234688][ T5279] FAULT_INJECTION: forcing a failure. [ 84.234688][ T5279] name failslab, interval 1, probability 0, space 0, times 0 [ 84.237009][ T5279] CPU: 1 PID: 5279 Comm: syz.0.31 Tainted: G W syzkaller #0 [ 84.238396][ T5279] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/26/2026 [ 84.239941][ T5279] Call trace: [ 84.240456][ T5279] dump_backtrace+0x0/0x458 [ 84.241200][ T5279] show_stack+0x2c/0x3c [ 84.242061][ T5279] __dump_stack+0x30/0x40 [ 84.242795][ T5279] dump_stack_lvl+0xf4/0x15c [ 84.243602][ T5279] dump_stack+0x1c/0x5c [ 84.244282][ T5279] should_fail+0x3bc/0x514 [ 84.245043][ T5279] __should_failslab+0xbc/0x10c [ 84.245822][ T5279] should_failslab+0x10/0x28 [ 84.246478][ T5279] slab_pre_alloc_hook+0x64/0xe8 [ 84.247215][ T5279] kmem_cache_alloc_trace+0x98/0x3ec [ 84.248107][ T5279] btrfs_delete_delayed_dir_index+0x22c/0x56c [ 84.249092][ T5279] __btrfs_unlink_inode+0x350/0xaec [ 84.249872][ T5279] btrfs_unlink+0x108/0x258 [ 84.250613][ T5279] vfs_unlink+0x2e0/0x4f4 [ 84.251315][ T5279] do_unlinkat+0x328/0x618 [ 84.252141][ T5279] __arm64_sys_unlinkat+0xe0/0xfc [ 84.252899][ T5279] invoke_syscall+0x98/0x2b0 [ 84.253632][ T5279] el0_svc_common+0x138/0x258 [ 84.254442][ T5279] do_el0_svc+0x58/0x13c [ 84.255175][ T5279] el0_svc+0x78/0x1d0 [ 84.255910][ T5279] el0t_64_sync_handler+0xcc/0xe4 [ 84.256684][ T5279] el0t_64_sync+0x1a0/0x1a4 [ 84.259854][ T5279] ------------[ cut here ]------------ [ 84.260959][ T5279] WARNING: CPU: 1 PID: 5279 at fs/btrfs/inode.c:4182 __btrfs_unlink_inode+0x904/0xaec [ 84.262466][ T5279] Modules linked in: [ 84.263106][ T5279] CPU: 1 PID: 5279 Comm: syz.0.31 Tainted: G W syzkaller #0 [ 84.264449][ T5279] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/26/2026 [ 84.266032][ T5279] pstate: 62400005 (nZCv daif +PAN -UAO +TCO -DIT -SSBS BTYPE=--) [ 84.267204][ T5279] pc : __btrfs_unlink_inode+0x904/0xaec [ 84.268082][ T5279] lr : __btrfs_unlink_inode+0x904/0xaec [ 84.269029][ T5279] sp : ffff800020f17a60 [ 84.269820][ T5279] x29: ffff800020f17b10 x28: ffff0000ca000000 x27: ffff0000e25f0010 [ 84.271136][ T5279] x26: 0000000000000100 x25: 00000000fffffff4 x24: ffff0000e8a56160 [ 84.272563][ T5279] x23: ffff7000041e2f54 x22: dfff800000000000 x21: ffff0000ebe06bf0 [ 84.274044][ T5279] x20: ffff0000de7e4478 x19: 1fffe0001bcfc88f x18: 0000000000000001 [ 84.275393][ T5279] x17: 0000000000000000 x16: ffff80001125a830 x15: 00000000ffffffff [ 84.276741][ T5279] x14: 0000000000000001 x13: 1fffe000341f47ab x12: 0000000000ff0100 [ 84.278082][ T5279] x11: 0000000000000000 x10: 0000000000000000 x9 : 600fb4c51c8b6200 [ 84.279470][ T5279] x8 : 600fb4c51c8b6200 x7 : 0000000000000001 x6 : 0000000000000001 [ 84.280792][ T5279] x5 : ffff800020f17378 x4 : ffff80001437f3e0 x3 : ffff800008508edc [ 84.282111][ T5279] x2 : 0000000000000001 x1 : 0000000100000000 x0 : 0000000000000026 [ 84.283393][ T5279] Call trace: [ 84.283953][ T5279] __btrfs_unlink_inode+0x904/0xaec [ 84.284823][ T5279] btrfs_unlink+0x108/0x258 [ 84.285583][ T5279] vfs_unlink+0x2e0/0x4f4 [ 84.286446][ T5279] do_unlinkat+0x328/0x618 [ 84.287223][ T5279] __arm64_sys_unlinkat+0xe0/0xfc [ 84.288016][ T5279] invoke_syscall+0x98/0x2b0 [ 84.288798][ T5279] el0_svc_common+0x138/0x258 [ 84.289605][ T5279] do_el0_svc+0x58/0x13c [ 84.290319][ T5279] el0_svc+0x78/0x1d0 [ 84.290952][ T5279] el0t_64_sync_handler+0xcc/0xe4 [ 84.291801][ T5279] el0t_64_sync+0x1a0/0x1a4 [ 84.292602][ T5279] irq event stamp: 81780 [ 84.293271][ T5279] hardirqs last enabled at (81779): [] __up_console_sem+0xb4/0xfc [ 84.294858][ T5279] hardirqs last disabled at (81780): [] el1_dbg+0x24/0x80 [ 84.296334][ T5279] softirqs last enabled at (81756): [] handle_softirqs+0xa40/0xbe4 [ 84.297994][ T5279] softirqs last disabled at (81735): [] __irq_exit_rcu+0x240/0x43c [ 84.299541][ T5279] ---[ end trace 9bf576fe55b8115a ]--- [ 84.308828][ T5279] BTRFS: error (device loop0) in __btrfs_unlink_inode:4182: errno=-12 Out of memory [ 84.310531][ T5279] BTRFS info (device loop0): forced readonly 1970/01/01 00:01:24 executed programs: 19 [ 84.494182][ T5301] set_capacity_and_notify: 7 callbacks suppressed [ 84.494192][ T5301] loop0: detected capacity change from 0 to 32768 [ 84.505680][ T5301] BTRFS: device fsid c9fe44da-de57-406a-8241-57ec7d4412cf devid 1 transid 8 /dev/loop0 scanned by syz.0.32 (5301) [ 84.514215][ T5301] BTRFS info (device loop0): using crc32c (crc32c-generic) checksum algorithm [ 84.515685][ T5301] BTRFS info (device loop0): using free space tree [ 84.516691][ T5301] BTRFS info (device loop0): has skinny extents [ 84.550391][ T5301] BTRFS info (device loop0): enabling ssd optimizations [ 84.555639][ T5301] FAULT_INJECTION: forcing a failure. [ 84.555639][ T5301] name failslab, interval 1, probability 0, space 0, times 0 [ 84.557642][ T5301] CPU: 0 PID: 5301 Comm: syz.0.32 Tainted: G W syzkaller #0 [ 84.559016][ T5301] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/26/2026 [ 84.560483][ T5301] Call trace: [ 84.560955][ T5301] dump_backtrace+0x0/0x458 [ 84.561651][ T5301] show_stack+0x2c/0x3c [ 84.562288][ T5301] __dump_stack+0x30/0x40 [ 84.562952][ T5301] dump_stack_lvl+0xf4/0x15c [ 84.563695][ T5301] dump_stack+0x1c/0x5c [ 84.564380][ T5301] should_fail+0x3bc/0x514 [ 84.565051][ T5301] __should_failslab+0xbc/0x10c [ 84.565903][ T5301] should_failslab+0x10/0x28 [ 84.566652][ T5301] slab_pre_alloc_hook+0x64/0xe8 [ 84.567510][ T5301] kmem_cache_alloc_trace+0x98/0x3ec [ 84.568428][ T5301] btrfs_delete_delayed_dir_index+0x22c/0x56c [ 84.569547][ T5301] __btrfs_unlink_inode+0x350/0xaec [ 84.570338][ T5301] btrfs_unlink+0x108/0x258 [ 84.571089][ T5301] vfs_unlink+0x2e0/0x4f4 [ 84.571743][ T5301] do_unlinkat+0x328/0x618 [ 84.572514][ T5301] __arm64_sys_unlinkat+0xe0/0xfc [ 84.573256][ T5301] invoke_syscall+0x98/0x2b0 [ 84.573988][ T5301] el0_svc_common+0x138/0x258 [ 84.574706][ T5301] do_el0_svc+0x58/0x13c [ 84.575379][ T5301] el0_svc+0x78/0x1d0 [ 84.576003][ T5301] el0t_64_sync_handler+0xcc/0xe4 [ 84.576891][ T5301] el0t_64_sync+0x1a0/0x1a4 [ 84.577754][ T5301] ------------[ cut here ]------------ [ 84.578812][ T5301] WARNING: CPU: 0 PID: 5301 at fs/btrfs/inode.c:4182 __btrfs_unlink_inode+0x904/0xaec [ 84.580283][ T5301] Modules linked in: [ 84.580936][ T5301] CPU: 0 PID: 5301 Comm: syz.0.32 Tainted: G W syzkaller #0 [ 84.582313][ T5301] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/26/2026 [ 84.584019][ T5301] pstate: 62400005 (nZCv daif +PAN -UAO +TCO -DIT -SSBS BTYPE=--) [ 84.585360][ T5301] pc : __btrfs_unlink_inode+0x904/0xaec [ 84.586273][ T5301] lr : __btrfs_unlink_inode+0x904/0xaec [ 84.587228][ T5301] sp : ffff800021057a60 [ 84.587971][ T5301] x29: ffff800021057b10 x28: ffff0000cb56c000 x27: ffff0000ebdba810 [ 84.589163][ T5301] x26: 0000000000000100 x25: 00000000fffffff4 x24: ffff0000cda7e370 [ 84.590391][ T5301] x23: ffff70000420af54 x22: dfff800000000000 x21: ffff0000e2799d70 [ 84.591712][ T5301] x20: ffff0000de5bdd68 x19: 1fffe0001bcb7bad x18: 0000000000000001 [ 84.592934][ T5301] x17: 0000000000000000 x16: ffff8000083049fc x15: 00000000ffffffff [ 84.594208][ T5301] x14: 0000000000000001 x13: 1ffff0000420ae6c x12: 0000000000ff0100 [ 84.595440][ T5301] x11: 0000000000000000 x10: 0000000000000000 x9 : 6da1c50d68adf800 [ 84.596718][ T5301] x8 : 6da1c50d68adf800 x7 : 0000000000000001 x6 : 0000000000000001 [ 84.598072][ T5301] x5 : ffff800021057378 x4 : ffff80001437f3e0 x3 : ffff800008304b0c [ 84.599474][ T5301] x2 : 0000000000000001 x1 : 0000000100000000 x0 : 0000000000000026 [ 84.600844][ T5301] Call trace: [ 84.601400][ T5301] __btrfs_unlink_inode+0x904/0xaec [ 84.602248][ T5301] btrfs_unlink+0x108/0x258 [ 84.602926][ T5301] vfs_unlink+0x2e0/0x4f4 [ 84.603634][ T5301] do_unlinkat+0x328/0x618 [ 84.604454][ T5301] __arm64_sys_unlinkat+0xe0/0xfc [ 84.605231][ T5301] invoke_syscall+0x98/0x2b0 [ 84.606044][ T5301] el0_svc_common+0x138/0x258 [ 84.606824][ T5301] do_el0_svc+0x58/0x13c [ 84.607527][ T5301] el0_svc+0x78/0x1d0 [ 84.608188][ T5301] el0t_64_sync_handler+0xcc/0xe4 [ 84.608963][ T5301] el0t_64_sync+0x1a0/0x1a4 [ 84.609731][ T5301] irq event stamp: 81540 [ 84.610440][ T5301] hardirqs last enabled at (81539): [] __up_console_sem+0xb4/0xfc [ 84.612137][ T5301] hardirqs last disabled at (81540): [] el1_dbg+0x24/0x80 [ 84.613553][ T5301] softirqs last enabled at (81520): [] handle_softirqs+0xa40/0xbe4 [ 84.615239][ T5301] softirqs last disabled at (81495): [] __irq_exit_rcu+0x240/0x43c [ 84.616733][ T5301] ---[ end trace 9bf576fe55b8115b ]--- [ 84.619531][ T5301] BTRFS: error (device loop0) in __btrfs_unlink_inode:4182: errno=-12 Out of memory [ 84.621050][ T5301] BTRFS info (device loop0): forced readonly [ 84.826067][ T5322] loop0: detected capacity change from 0 to 32768 [ 84.868304][ T5322] BTRFS: device fsid c9fe44da-de57-406a-8241-57ec7d4412cf devid 1 transid 8 /dev/loop0 scanned by syz.0.33 (5322) [ 84.874199][ T5322] BTRFS info (device loop0): using crc32c (crc32c-generic) checksum algorithm [ 84.876522][ T5322] BTRFS info (device loop0): using free space tree [ 84.877805][ T5322] BTRFS info (device loop0): has skinny extents [ 84.905395][ T5322] BTRFS info (device loop0): enabling ssd optimizations [ 84.909687][ T5322] FAULT_INJECTION: forcing a failure. [ 84.909687][ T5322] name failslab, interval 1, probability 0, space 0, times 0 [ 84.912061][ T5322] CPU: 0 PID: 5322 Comm: syz.0.33 Tainted: G W syzkaller #0 [ 84.913439][ T5322] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/26/2026 [ 84.915154][ T5322] Call trace: [ 84.915804][ T5322] dump_backtrace+0x0/0x458 [ 84.916637][ T5322] show_stack+0x2c/0x3c [ 84.917323][ T5322] __dump_stack+0x30/0x40 [ 84.918074][ T5322] dump_stack_lvl+0xf4/0x15c [ 84.918847][ T5322] dump_stack+0x1c/0x5c [ 84.919577][ T5322] should_fail+0x3bc/0x514 [ 84.920307][ T5322] __should_failslab+0xbc/0x10c [ 84.921128][ T5322] should_failslab+0x10/0x28 [ 84.921999][ T5322] slab_pre_alloc_hook+0x64/0xe8 [ 84.922798][ T5322] kmem_cache_alloc_trace+0x98/0x3ec [ 84.923686][ T5322] btrfs_delete_delayed_dir_index+0x22c/0x56c [ 84.924719][ T5322] __btrfs_unlink_inode+0x350/0xaec [ 84.925620][ T5322] btrfs_unlink+0x108/0x258 [ 84.926404][ T5322] vfs_unlink+0x2e0/0x4f4 [ 84.927112][ T5322] do_unlinkat+0x328/0x618 [ 84.927776][ T5322] __arm64_sys_unlinkat+0xe0/0xfc [ 84.928530][ T5322] invoke_syscall+0x98/0x2b0 [ 84.929268][ T5322] el0_svc_common+0x138/0x258 [ 84.929999][ T5322] do_el0_svc+0x58/0x13c [ 84.930606][ T5322] el0_svc+0x78/0x1d0 [ 84.931245][ T5322] el0t_64_sync_handler+0xcc/0xe4 [ 84.932041][ T5322] el0t_64_sync+0x1a0/0x1a4 [ 84.933704][ T5322] ------------[ cut here ]------------ [ 84.934727][ T5322] WARNING: CPU: 0 PID: 5322 at fs/btrfs/inode.c:4182 __btrfs_unlink_inode+0x904/0xaec [ 84.936161][ T5322] Modules linked in: [ 84.936747][ T5322] CPU: 0 PID: 5322 Comm: syz.0.33 Tainted: G W syzkaller #0 [ 84.938149][ T5322] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/26/2026 [ 84.939778][ T5322] pstate: 62400005 (nZCv daif +PAN -UAO +TCO -DIT -SSBS BTYPE=--) [ 84.941061][ T5322] pc : __btrfs_unlink_inode+0x904/0xaec [ 84.941945][ T5322] lr : __btrfs_unlink_inode+0x904/0xaec [ 84.942894][ T5322] sp : ffff800021077a60 [ 84.943612][ T5322] x29: ffff800021077b10 x28: ffff0000d995e000 x27: ffff0000ebdbac10 [ 84.944927][ T5322] x26: 0000000000000100 x25: 00000000fffffff4 x24: ffff0000ebb84370 [ 84.946195][ T5322] x23: ffff70000420ef54 x22: dfff800000000000 x21: ffff0000e279ce80 [ 84.947514][ T5322] x20: ffff0000de5bdec8 x19: 1fffe0001bcb7bd9 x18: 0000000000000001 [ 84.948842][ T5322] x17: 0000000000000000 x16: ffff8000083049fc x15: 00000000ffffffff [ 84.950056][ T5322] x14: 0000000000000001 x13: 1ffff0000420ee6c x12: 0000000000ff0100 [ 84.951252][ T5322] x11: 0000000000000000 x10: 0000000000000000 x9 : 2b450507c852d900 [ 84.952426][ T5322] x8 : 2b450507c852d900 x7 : 0000000000000001 x6 : 0000000000000001 [ 84.953804][ T5322] x5 : ffff800021077378 x4 : ffff80001437f3e0 x3 : ffff800008304b0c [ 84.955247][ T5322] x2 : 0000000000000001 x1 : 0000000100000000 x0 : 0000000000000026 [ 84.956656][ T5322] Call trace: [ 84.957237][ T5322] __btrfs_unlink_inode+0x904/0xaec [ 84.958087][ T5322] btrfs_unlink+0x108/0x258 [ 84.958796][ T5322] vfs_unlink+0x2e0/0x4f4 [ 84.959544][ T5322] do_unlinkat+0x328/0x618 [ 84.960298][ T5322] __arm64_sys_unlinkat+0xe0/0xfc [ 84.961152][ T5322] invoke_syscall+0x98/0x2b0 [ 84.961930][ T5322] el0_svc_common+0x138/0x258 [ 84.962777][ T5322] do_el0_svc+0x58/0x13c [ 84.963453][ T5322] el0_svc+0x78/0x1d0 [ 84.964099][ T5322] el0t_64_sync_handler+0xcc/0xe4 [ 84.964988][ T5322] el0t_64_sync+0x1a0/0x1a4 [ 84.965646][ T5322] irq event stamp: 80740 [ 84.966366][ T5322] hardirqs last enabled at (80739): [] __up_console_sem+0xb4/0xfc [ 84.967927][ T5322] hardirqs last disabled at (80740): [] el1_dbg+0x24/0x80 [ 84.969441][ T5322] softirqs last enabled at (80720): [] handle_softirqs+0xa40/0xbe4 [ 84.971015][ T5322] softirqs last disabled at (80549): [] __irq_exit_rcu+0x240/0x43c [ 84.972590][ T5322] ---[ end trace 9bf576fe55b8115c ]--- [ 84.973833][ T5322] BTRFS: error (device loop0) in __btrfs_unlink_inode:4182: errno=-12 Out of memory [ 84.975353][ T5322] BTRFS info (device loop0): forced readonly [ 85.151802][ T5344] loop0: detected capacity change from 0 to 32768 [ 85.160124][ T5344] BTRFS: device fsid c9fe44da-de57-406a-8241-57ec7d4412cf devid 1 transid 8 /dev/loop0 scanned by syz.0.34 (5344) [ 85.164914][ T5344] BTRFS info (device loop0): using crc32c (crc32c-generic) checksum algorithm [ 85.166378][ T5344] BTRFS info (device loop0): using free space tree [ 85.167407][ T5344] BTRFS info (device loop0): has skinny extents [ 85.175281][ T5344] BTRFS info (device loop0): enabling ssd optimizations [ 85.179507][ T5344] FAULT_INJECTION: forcing a failure. [ 85.179507][ T5344] name failslab, interval 1, probability 0, space 0, times 0 [ 85.181641][ T5344] CPU: 1 PID: 5344 Comm: syz.0.34 Tainted: G W syzkaller #0 [ 85.183134][ T5344] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/26/2026 [ 85.184900][ T5344] Call trace: [ 85.185424][ T5344] dump_backtrace+0x0/0x458 [ 85.186155][ T5344] show_stack+0x2c/0x3c [ 85.186957][ T5344] __dump_stack+0x30/0x40 [ 85.187671][ T5344] dump_stack_lvl+0xf4/0x15c [ 85.188483][ T5344] dump_stack+0x1c/0x5c [ 85.189147][ T5344] should_fail+0x3bc/0x514 [ 85.189957][ T5344] __should_failslab+0xbc/0x10c [ 85.190756][ T5344] should_failslab+0x10/0x28 [ 85.191503][ T5344] slab_pre_alloc_hook+0x64/0xe8 [ 85.192305][ T5344] kmem_cache_alloc_trace+0x98/0x3ec [ 85.193136][ T5344] btrfs_delete_delayed_dir_index+0x22c/0x56c [ 85.194146][ T5344] __btrfs_unlink_inode+0x350/0xaec [ 85.194987][ T5344] btrfs_unlink+0x108/0x258 [ 85.195661][ T5344] vfs_unlink+0x2e0/0x4f4 [ 85.196246][ T5344] do_unlinkat+0x328/0x618 [ 85.196930][ T5344] __arm64_sys_unlinkat+0xe0/0xfc [ 85.197850][ T5344] invoke_syscall+0x98/0x2b0 [ 85.198679][ T5344] el0_svc_common+0x138/0x258 [ 85.199454][ T5344] do_el0_svc+0x58/0x13c [ 85.200167][ T5344] el0_svc+0x78/0x1d0 [ 85.200828][ T5344] el0t_64_sync_handler+0xcc/0xe4 [ 85.201662][ T5344] el0t_64_sync+0x1a0/0x1a4 [ 85.205817][ T5344] ------------[ cut here ]------------ [ 85.206801][ T5344] WARNING: CPU: 1 PID: 5344 at fs/btrfs/inode.c:4182 __btrfs_unlink_inode+0x904/0xaec [ 85.208294][ T5344] Modules linked in: [ 85.208897][ T5344] CPU: 1 PID: 5344 Comm: syz.0.34 Tainted: G W syzkaller #0 [ 85.210326][ T5344] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/26/2026 [ 85.211958][ T5344] pstate: 62400005 (nZCv daif +PAN -UAO +TCO -DIT -SSBS BTYPE=--) [ 85.213170][ T5344] pc : __btrfs_unlink_inode+0x904/0xaec [ 85.214121][ T5344] lr : __btrfs_unlink_inode+0x904/0xaec [ 85.214982][ T5344] sp : ffff8000211c7a60 [ 85.215615][ T5344] x29: ffff8000211c7b10 x28: ffff0000eea54000 x27: ffff0000e25f0810 [ 85.216949][ T5344] x26: 0000000000000100 x25: 00000000fffffff4 x24: ffff0000cfd6d840 [ 85.218339][ T5344] x23: ffff700004238f54 x22: dfff800000000000 x21: ffff0000e2741d70 [ 85.219665][ T5344] x20: ffff0000de7e4688 x19: 1fffe0001bcfc8d1 x18: 0000000000000001 [ 85.220980][ T5344] x17: 0000000000000000 x16: ffff80001125a830 x15: 00000000ffffffff [ 85.222240][ T5344] x14: 0000000000000001 x13: 1fffe000341f47ab x12: 0000000000ff0100 [ 85.223567][ T5344] x11: 0000000000000000 x10: 0000000000000000 x9 : e5e534220dd44700 [ 85.224790][ T5344] x8 : e5e534220dd44700 x7 : 0000000000000001 x6 : 0000000000000001 [ 85.226033][ T5344] x5 : ffff8000211c7378 x4 : ffff80001437f3e0 x3 : ffff800008508edc [ 85.227398][ T5344] x2 : 0000000000000001 x1 : 0000000100000000 x0 : 0000000000000026 [ 85.228827][ T5344] Call trace: [ 85.229338][ T5344] __btrfs_unlink_inode+0x904/0xaec [ 85.230142][ T5344] btrfs_unlink+0x108/0x258 [ 85.230918][ T5344] vfs_unlink+0x2e0/0x4f4 [ 85.231686][ T5344] do_unlinkat+0x328/0x618 [ 85.232455][ T5344] __arm64_sys_unlinkat+0xe0/0xfc [ 85.233357][ T5344] invoke_syscall+0x98/0x2b0 [ 85.234103][ T5344] el0_svc_common+0x138/0x258 [ 85.234920][ T5344] do_el0_svc+0x58/0x13c [ 85.235668][ T5344] el0_svc+0x78/0x1d0 [ 85.236359][ T5344] el0t_64_sync_handler+0xcc/0xe4 [ 85.237183][ T5344] el0t_64_sync+0x1a0/0x1a4 [ 85.237951][ T5344] irq event stamp: 80244 [ 85.238687][ T5344] hardirqs last enabled at (80243): [] __up_console_sem+0xb4/0xfc [ 85.240349][ T5344] hardirqs last disabled at (80244): [] el1_dbg+0x24/0x80 [ 85.241801][ T5344] softirqs last enabled at (80224): [] handle_softirqs+0xa40/0xbe4 [ 85.243438][ T5344] softirqs last disabled at (80143): [] __irq_exit_rcu+0x240/0x43c [ 85.244978][ T5344] ---[ end trace 9bf576fe55b8115d ]--- [ 85.247027][ T5344] BTRFS: error (device loop0) in __btrfs_unlink_inode:4182: errno=-12 Out of memory [ 85.248645][ T5344] BTRFS info (device loop0): forced readonly [ 85.399862][ T5366] loop0: detected capacity change from 0 to 32768 [ 85.408805][ T5366] BTRFS: device fsid c9fe44da-de57-406a-8241-57ec7d4412cf devid 1 transid 8 /dev/loop0 scanned by syz.0.35 (5366) [ 85.413743][ T5366] BTRFS info (device loop0): using crc32c (crc32c-generic) checksum algorithm [ 85.415231][ T5366] BTRFS info (device loop0): using free space tree [ 85.416344][ T5366] BTRFS info (device loop0): has skinny extents [ 85.424192][ T5366] BTRFS info (device loop0): enabling ssd optimizations [ 85.428324][ T5366] FAULT_INJECTION: forcing a failure. [ 85.428324][ T5366] name failslab, interval 1, probability 0, space 0, times 0 [ 85.430380][ T5366] CPU: 0 PID: 5366 Comm: syz.0.35 Tainted: G W syzkaller #0 [ 85.431638][ T5366] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/26/2026 [ 85.433346][ T5366] Call trace: [ 85.433888][ T5366] dump_backtrace+0x0/0x458 [ 85.434671][ T5366] show_stack+0x2c/0x3c [ 85.435401][ T5366] __dump_stack+0x30/0x40 [ 85.436145][ T5366] dump_stack_lvl+0xf4/0x15c [ 85.436907][ T5366] dump_stack+0x1c/0x5c [ 85.437602][ T5366] should_fail+0x3bc/0x514 [ 85.438340][ T5366] __should_failslab+0xbc/0x10c [ 85.439153][ T5366] should_failslab+0x10/0x28 [ 85.439987][ T5366] slab_pre_alloc_hook+0x64/0xe8 [ 85.440813][ T5366] kmem_cache_alloc+0x94/0x3d4 [ 85.441653][ T5366] btrfs_alloc_path+0x5c/0x68 [ 85.442498][ T5366] __btrfs_unlink_inode+0x1dc/0xaec [ 85.443366][ T5366] btrfs_unlink+0x108/0x258 [ 85.444138][ T5366] vfs_unlink+0x2e0/0x4f4 [ 85.444821][ T5366] do_unlinkat+0x328/0x618 [ 85.445595][ T5366] __arm64_sys_unlinkat+0xe0/0xfc [ 85.446438][ T5366] invoke_syscall+0x98/0x2b0 [ 85.447198][ T5366] el0_svc_common+0x138/0x258 [ 85.447915][ T5366] do_el0_svc+0x58/0x13c [ 85.448598][ T5366] el0_svc+0x78/0x1d0 [ 85.449209][ T5366] el0t_64_sync_handler+0xcc/0xe4 [ 85.450003][ T5366] el0t_64_sync+0x1a0/0x1a4 [ 85.516244][ T4864] BTRFS: device fsid c9fe44da-de57-406a-8241-57ec7d4412cf devid 1 transid 10 /dev/loop0 scanned by udevd (4864) [ 85.602436][ T5387] loop0: detected capacity change from 0 to 32768 [ 85.657347][ T5387] BTRFS info (device loop0): using crc32c (crc32c-generic) checksum algorithm [ 85.658955][ T5387] BTRFS info (device loop0): using free space tree [ 85.660094][ T5387] BTRFS info (device loop0): has skinny extents [ 85.668453][ T5387] BTRFS info (device loop0): enabling ssd optimizations [ 85.672782][ T5387] FAULT_INJECTION: forcing a failure. [ 85.672782][ T5387] name failslab, interval 1, probability 0, space 0, times 0 [ 85.676161][ T5387] CPU: 1 PID: 5387 Comm: syz.0.36 Tainted: G W syzkaller #0 [ 85.677486][ T5387] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/26/2026 [ 85.678988][ T5387] Call trace: [ 85.679508][ T5387] dump_backtrace+0x0/0x458 [ 85.680220][ T5387] show_stack+0x2c/0x3c [ 85.680963][ T5387] __dump_stack+0x30/0x40 [ 85.681708][ T5387] dump_stack_lvl+0xf4/0x15c [ 85.682513][ T5387] dump_stack+0x1c/0x5c [ 85.683185][ T5387] should_fail+0x3bc/0x514 [ 85.683918][ T5387] __should_failslab+0xbc/0x10c [ 85.684678][ T5387] should_failslab+0x10/0x28 [ 85.685413][ T5387] slab_pre_alloc_hook+0x64/0xe8 [ 85.686254][ T5387] kmem_cache_alloc_trace+0x98/0x3ec [ 85.686974][ T5387] btrfs_delete_delayed_dir_index+0x22c/0x56c [ 85.688011][ T5387] __btrfs_unlink_inode+0x350/0xaec [ 85.688907][ T5387] btrfs_unlink+0x108/0x258 [ 85.689614][ T5387] vfs_unlink+0x2e0/0x4f4 [ 85.690358][ T5387] do_unlinkat+0x328/0x618 [ 85.691115][ T5387] __arm64_sys_unlinkat+0xe0/0xfc [ 85.691901][ T5387] invoke_syscall+0x98/0x2b0 [ 85.692664][ T5387] el0_svc_common+0x138/0x258 [ 85.693405][ T5387] do_el0_svc+0x58/0x13c [ 85.694197][ T5387] el0_svc+0x78/0x1d0 [ 85.694900][ T5387] el0t_64_sync_handler+0xcc/0xe4 [ 85.695742][ T5387] el0t_64_sync+0x1a0/0x1a4 [ 85.699003][ T5387] ------------[ cut here ]------------ [ 85.699901][ T5387] WARNING: CPU: 1 PID: 5387 at fs/btrfs/inode.c:4182 __btrfs_unlink_inode+0x904/0xaec [ 85.701523][ T5387] Modules linked in: [ 85.702266][ T5387] CPU: 1 PID: 5387 Comm: syz.0.36 Tainted: G W syzkaller #0 [ 85.703708][ T5387] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/26/2026 [ 85.705402][ T5387] pstate: 62400005 (nZCv daif +PAN -UAO +TCO -DIT -SSBS BTYPE=--) [ 85.706728][ T5387] pc : __btrfs_unlink_inode+0x904/0xaec [ 85.707632][ T5387] lr : __btrfs_unlink_inode+0x904/0xaec [ 85.708569][ T5387] sp : ffff800021287a60 [ 85.709297][ T5387] x29: ffff800021287b10 x28: ffff0000d52a4000 x27: ffff0000e25f1810 [ 85.710660][ T5387] x26: 0000000000000100 x25: 00000000fffffff4 x24: ffff0000c89cc6e0 [ 85.711981][ T5387] x23: ffff700004250f54 x22: dfff800000000000 x21: ffff0000e27444b0 [ 85.713279][ T5387] x20: ffff0000de7e41b8 x19: 1fffe0001bcfc837 x18: 0000000000000001 [ 85.714587][ T5387] x17: 0000000000000000 x16: ffff80001125a830 x15: 00000000ffffffff [ 85.715984][ T5387] x14: 0000000000000001 x13: 1fffe000341f47ab x12: 0000000000ff0100 [ 85.717339][ T5387] x11: 0000000000000000 x10: 0000000000000000 x9 : 1feaa6048c47cc00 [ 85.718698][ T5387] x8 : 1feaa6048c47cc00 x7 : 0000000000000001 x6 : 0000000000000001 [ 85.720125][ T5387] x5 : ffff800021287378 x4 : ffff80001437f3e0 x3 : ffff800008508edc [ 85.721565][ T5387] x2 : 0000000000000001 x1 : 0000000100000000 x0 : 0000000000000026 [ 85.722931][ T5387] Call trace: [ 85.723510][ T5387] __btrfs_unlink_inode+0x904/0xaec [ 85.724375][ T5387] btrfs_unlink+0x108/0x258 [ 85.725176][ T5387] vfs_unlink+0x2e0/0x4f4 [ 85.725946][ T5387] do_unlinkat+0x328/0x618 [ 85.726730][ T5387] __arm64_sys_unlinkat+0xe0/0xfc [ 85.727561][ T5387] invoke_syscall+0x98/0x2b0 [ 85.728356][ T5387] el0_svc_common+0x138/0x258 [ 85.729152][ T5387] do_el0_svc+0x58/0x13c [ 85.729900][ T5387] el0_svc+0x78/0x1d0 [ 85.730589][ T5387] el0t_64_sync_handler+0xcc/0xe4 [ 85.731450][ T5387] el0t_64_sync+0x1a0/0x1a4 [ 85.732235][ T5387] irq event stamp: 80264 [ 85.732965][ T5387] hardirqs last enabled at (80263): [] __up_console_sem+0xb4/0xfc [ 85.734581][ T5387] hardirqs last disabled at (80264): [] el1_dbg+0x24/0x80 [ 85.736071][ T5387] softirqs last enabled at (80244): [] handle_softirqs+0xa40/0xbe4 [ 85.737675][ T5387] softirqs last disabled at (80229): [] __irq_exit_rcu+0x240/0x43c [ 85.739203][ T5387] ---[ end trace 9bf576fe55b8115e ]--- [ 85.744670][ T5387] BTRFS: error (device loop0) in __btrfs_unlink_inode:4182: errno=-12 Out of memory [ 85.746349][ T5387] BTRFS info (device loop0): forced readonly [ 85.801789][ T4864] BTRFS: device fsid c9fe44da-de57-406a-8241-57ec7d4412cf devid 1 transid 8 /dev/loop0 scanned by udevd (4864) [ 85.894851][ T5410] loop0: detected capacity change from 0 to 32768 [ 85.935382][ T5410] BTRFS info (device loop0): using crc32c (crc32c-generic) checksum algorithm [ 85.937120][ T5410] BTRFS info (device loop0): using free space tree [ 85.938162][ T5410] BTRFS info (device loop0): has skinny extents [ 85.947851][ T5410] BTRFS info (device loop0): enabling ssd optimizations [ 85.952369][ T5410] FAULT_INJECTION: forcing a failure. [ 85.952369][ T5410] name failslab, interval 1, probability 0, space 0, times 0 [ 85.954844][ T5410] CPU: 1 PID: 5410 Comm: syz.0.37 Tainted: G W syzkaller #0 [ 85.956169][ T5410] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/26/2026 [ 85.957684][ T5410] Call trace: [ 85.958220][ T5410] dump_backtrace+0x0/0x458 [ 85.958981][ T5410] show_stack+0x2c/0x3c [ 85.959690][ T5410] __dump_stack+0x30/0x40 [ 85.960428][ T5410] dump_stack_lvl+0xf4/0x15c [ 85.961201][ T5410] dump_stack+0x1c/0x5c [ 85.961858][ T5410] should_fail+0x3bc/0x514 [ 85.962562][ T5410] __should_failslab+0xbc/0x10c [ 85.963336][ T5410] should_failslab+0x10/0x28 [ 85.964103][ T5410] slab_pre_alloc_hook+0x64/0xe8 [ 85.964892][ T5410] kmem_cache_alloc+0x94/0x3d4 [ 85.965692][ T5410] btrfs_alloc_path+0x5c/0x68 [ 85.966485][ T5410] __btrfs_unlink_inode+0x1dc/0xaec [ 85.967326][ T5410] btrfs_unlink+0x108/0x258 [ 85.968102][ T5410] vfs_unlink+0x2e0/0x4f4 [ 85.968834][ T5410] do_unlinkat+0x328/0x618 [ 85.969580][ T5410] __arm64_sys_unlinkat+0xe0/0xfc [ 85.970470][ T5410] invoke_syscall+0x98/0x2b0 [ 85.971235][ T5410] el0_svc_common+0x138/0x258 [ 85.972039][ T5410] do_el0_svc+0x58/0x13c [ 85.972735][ T5410] el0_svc+0x78/0x1d0 [ 85.973421][ T5410] el0t_64_sync_handler+0xcc/0xe4 [ 85.974275][ T5410] el0t_64_sync+0x1a0/0x1a4 [ 86.024484][ T4864] BTRFS: device fsid c9fe44da-de57-406a-8241-57ec7d4412cf devid 1 transid 10 /dev/loop0 scanned by udevd (4864) [ 86.121240][ T5432] loop0: detected capacity change from 0 to 32768 [ 86.224108][ T5432] BTRFS info (device loop0): using crc32c (crc32c-generic) checksum algorithm [ 86.225785][ T5432] BTRFS info (device loop0): using free space tree [ 86.226865][ T5432] BTRFS info (device loop0): has skinny extents [ 86.235207][ T5432] BTRFS info (device loop0): enabling ssd optimizations [ 86.239465][ T5432] FAULT_INJECTION: forcing a failure. [ 86.239465][ T5432] name failslab, interval 1, probability 0, space 0, times 0 [ 86.241434][ T5432] CPU: 1 PID: 5432 Comm: syz.0.38 Tainted: G W syzkaller #0 [ 86.242763][ T5432] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/26/2026 [ 86.244359][ T5432] Call trace: [ 86.244832][ T5432] dump_backtrace+0x0/0x458 [ 86.245598][ T5432] show_stack+0x2c/0x3c [ 86.246328][ T5432] __dump_stack+0x30/0x40 [ 86.247053][ T5432] dump_stack_lvl+0xf4/0x15c [ 86.247854][ T5432] dump_stack+0x1c/0x5c [ 86.248567][ T5432] should_fail+0x3bc/0x514 [ 86.249311][ T5432] __should_failslab+0xbc/0x10c [ 86.250127][ T5432] should_failslab+0x10/0x28 [ 86.250916][ T5432] slab_pre_alloc_hook+0x64/0xe8 [ 86.251748][ T5432] kmem_cache_alloc_trace+0x98/0x3ec [ 86.252644][ T5432] btrfs_delete_delayed_dir_index+0x22c/0x56c [ 86.253723][ T5432] __btrfs_unlink_inode+0x350/0xaec [ 86.254596][ T5432] btrfs_unlink+0x108/0x258 [ 86.255426][ T5432] vfs_unlink+0x2e0/0x4f4 [ 86.256142][ T5432] do_unlinkat+0x328/0x618 [ 86.256834][ T5432] __arm64_sys_unlinkat+0xe0/0xfc [ 86.257723][ T5432] invoke_syscall+0x98/0x2b0 [ 86.258576][ T5432] el0_svc_common+0x138/0x258 [ 86.259346][ T5432] do_el0_svc+0x58/0x13c [ 86.260073][ T5432] el0_svc+0x78/0x1d0 [ 86.260752][ T5432] el0t_64_sync_handler+0xcc/0xe4 [ 86.261845][ T5432] el0t_64_sync+0x1a0/0x1a4 [ 86.264781][ T5432] ------------[ cut here ]------------ [ 86.265743][ T5432] WARNING: CPU: 1 PID: 5432 at fs/btrfs/inode.c:4182 __btrfs_unlink_inode+0x904/0xaec [ 86.267251][ T5432] Modules linked in: [ 86.267925][ T5432] CPU: 1 PID: 5432 Comm: syz.0.38 Tainted: G W syzkaller #0 [ 86.269377][ T5432] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/26/2026 [ 86.271043][ T5432] pstate: 62400005 (nZCv daif +PAN -UAO +TCO -DIT -SSBS BTYPE=--) [ 86.272403][ T5432] pc : __btrfs_unlink_inode+0x904/0xaec [ 86.273263][ T5432] lr : __btrfs_unlink_inode+0x904/0xaec [ 86.274180][ T5432] sp : ffff8000213d7a60 [ 86.274856][ T5432] x29: ffff8000213d7b10 x28: ffff0000d7bee000 x27: ffff0000e25f2010 [ 86.276118][ T5432] x26: 0000000000000100 x25: 00000000fffffff4 x24: ffff0000c218b210 [ 86.277532][ T5432] x23: ffff70000427af54 x22: dfff800000000000 x21: ffff0000ebd65850 [ 86.278830][ T5432] x20: ffff0000de7e4e18 x19: 1fffe0001bcfc9c3 x18: 0000000000000001 [ 86.280211][ T5432] x17: 0000000000000000 x16: ffff80001125a830 x15: 00000000ffffffff [ 86.281505][ T5432] x14: 0000000000000001 x13: 1fffe000341f47ab x12: 0000000000ff0100 [ 86.282815][ T5432] x11: 0000000000000000 x10: 0000000000000000 x9 : aabd4a1eac993100 [ 86.284259][ T5432] x8 : aabd4a1eac993100 x7 : 0000000000000001 x6 : 0000000000000001 [ 86.285684][ T5432] x5 : ffff8000213d7378 x4 : ffff80001437f3e0 x3 : ffff800008508edc [ 86.287091][ T5432] x2 : 0000000000000001 x1 : 0000000100000000 x0 : 0000000000000026 [ 86.288512][ T5432] Call trace: [ 86.289086][ T5432] __btrfs_unlink_inode+0x904/0xaec [ 86.289953][ T5432] btrfs_unlink+0x108/0x258 [ 86.290837][ T5432] vfs_unlink+0x2e0/0x4f4 [ 86.291598][ T5432] do_unlinkat+0x328/0x618 [ 86.292342][ T5432] __arm64_sys_unlinkat+0xe0/0xfc [ 86.293211][ T5432] invoke_syscall+0x98/0x2b0 [ 86.294025][ T5432] el0_svc_common+0x138/0x258 [ 86.294894][ T5432] do_el0_svc+0x58/0x13c [ 86.295676][ T5432] el0_svc+0x78/0x1d0 [ 86.296402][ T5432] el0t_64_sync_handler+0xcc/0xe4 [ 86.297275][ T5432] el0t_64_sync+0x1a0/0x1a4 [ 86.298003][ T5432] irq event stamp: 80384 [ 86.298717][ T5432] hardirqs last enabled at (80383): [] __up_console_sem+0xb4/0xfc [ 86.300234][ T5432] hardirqs last disabled at (80384): [] el1_dbg+0x24/0x80 [ 86.301706][ T5432] softirqs last enabled at (80364): [] handle_softirqs+0xa40/0xbe4 [ 86.303276][ T5432] softirqs last disabled at (80287): [] __irq_exit_rcu+0x240/0x43c [ 86.304959][ T5432] ---[ end trace 9bf576fe55b8115f ]--- [ 86.307991][ T5432] BTRFS: error (device loop0) in __btrfs_unlink_inode:4182: errno=-12 Out of memory [ 86.309551][ T5432] BTRFS info (device loop0): forced readonly [ 86.455992][ T5455] loop0: detected capacity change from 0 to 32768 [ 86.494294][ T5455] BTRFS: device fsid c9fe44da-de57-406a-8241-57ec7d4412cf devid 1 transid 8 /dev/loop0 scanned by syz.0.39 (5455) [ 86.535742][ T5455] BTRFS info (device loop0): using crc32c (crc32c-generic) checksum algorithm [ 86.537238][ T5455] BTRFS info (device loop0): using free space tree [ 86.538276][ T5455] BTRFS info (device loop0): has skinny extents [ 86.548658][ T5455] BTRFS info (device loop0): enabling ssd optimizations [ 86.553982][ T5455] FAULT_INJECTION: forcing a failure. [ 86.553982][ T5455] name failslab, interval 1, probability 0, space 0, times 0 [ 86.556165][ T5455] CPU: 0 PID: 5455 Comm: syz.0.39 Tainted: G W syzkaller #0 [ 86.557537][ T5455] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/26/2026 [ 86.559215][ T5455] Call trace: [ 86.559741][ T5455] dump_backtrace+0x0/0x458 [ 86.560494][ T5455] show_stack+0x2c/0x3c [ 86.561126][ T5455] __dump_stack+0x30/0x40 [ 86.561910][ T5455] dump_stack_lvl+0xf4/0x15c [ 86.562616][ T5455] dump_stack+0x1c/0x5c [ 86.563270][ T5455] should_fail+0x3bc/0x514 [ 86.564033][ T5455] __should_failslab+0xbc/0x10c [ 86.564802][ T5455] should_failslab+0x10/0x28 [ 86.565533][ T5455] slab_pre_alloc_hook+0x64/0xe8 [ 86.566324][ T5455] kmem_cache_alloc_trace+0x98/0x3ec [ 86.567261][ T5455] btrfs_delete_delayed_dir_index+0x22c/0x56c [ 86.568342][ T5455] __btrfs_unlink_inode+0x350/0xaec [ 86.569231][ T5455] btrfs_unlink+0x108/0x258 [ 86.569984][ T5455] vfs_unlink+0x2e0/0x4f4 [ 86.570698][ T5455] do_unlinkat+0x328/0x618 [ 86.571483][ T5455] __arm64_sys_unlinkat+0xe0/0xfc [ 86.572347][ T5455] invoke_syscall+0x98/0x2b0 [ 86.573120][ T5455] el0_svc_common+0x138/0x258 [ 86.573853][ T5455] do_el0_svc+0x58/0x13c [ 86.574575][ T5455] el0_svc+0x78/0x1d0 [ 86.575245][ T5455] el0t_64_sync_handler+0xcc/0xe4 [ 86.576114][ T5455] el0t_64_sync+0x1a0/0x1a4 [ 86.579295][ T5455] ------------[ cut here ]------------ [ 86.580293][ T5455] WARNING: CPU: 0 PID: 5455 at fs/btrfs/inode.c:4182 __btrfs_unlink_inode+0x904/0xaec [ 86.581739][ T5455] Modules linked in: [ 86.582319][ T5455] CPU: 0 PID: 5455 Comm: syz.0.39 Tainted: G W syzkaller #0 [ 86.583711][ T5455] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/26/2026 [ 86.585548][ T5455] pstate: 62400005 (nZCv daif +PAN -UAO +TCO -DIT -SSBS BTYPE=--) [ 86.586895][ T5455] pc : __btrfs_unlink_inode+0x904/0xaec [ 86.587843][ T5455] lr : __btrfs_unlink_inode+0x904/0xaec [ 86.588799][ T5455] sp : ffff800021bc7a60 [ 86.589471][ T5455] x29: ffff800021bc7b10 x28: ffff0000d8e72000 x27: ffff0000ebdb9810 [ 86.590788][ T5455] x26: 0000000000000100 x25: 00000000fffffff4 x24: ffff0000c994e8f0 [ 86.592224][ T5455] x23: ffff700004378f54 x22: dfff800000000000 x21: ffff0000e27e44b0 [ 86.593656][ T5455] x20: ffff0000de5bd898 x19: 1fffe0001bcb7b13 x18: 0000000000000001 [ 86.594950][ T5455] x17: 0000000000000000 x16: ffff80001125a830 x15: 00000000ffffffff [ 86.596356][ T5455] x14: 0000000000000001 x13: 1fffe000341f05ab x12: 0000000000ff0100 [ 86.597673][ T5455] x11: 0000000000000000 x10: 0000000000000000 x9 : be1cf8b7a4b7b200 [ 86.599126][ T5455] x8 : be1cf8b7a4b7b200 x7 : 0000000000000001 x6 : 0000000000000001 [ 86.600554][ T5455] x5 : ffff800021bc7378 x4 : ffff80001437f3e0 x3 : ffff800008508edc [ 86.601845][ T5455] x2 : 0000000000000001 x1 : 0000000100000000 x0 : 0000000000000026 [ 86.603162][ T5455] Call trace: [ 86.603746][ T5455] __btrfs_unlink_inode+0x904/0xaec [ 86.604556][ T5455] btrfs_unlink+0x108/0x258 [ 86.605319][ T5455] vfs_unlink+0x2e0/0x4f4 [ 86.606063][ T5455] do_unlinkat+0x328/0x618 [ 86.606810][ T5455] __arm64_sys_unlinkat+0xe0/0xfc [ 86.607670][ T5455] invoke_syscall+0x98/0x2b0 [ 86.608418][ T5455] el0_svc_common+0x138/0x258 [ 86.609204][ T5455] do_el0_svc+0x58/0x13c [ 86.609895][ T5455] el0_svc+0x78/0x1d0 [ 86.610539][ T5455] el0t_64_sync_handler+0xcc/0xe4 [ 86.611436][ T5455] el0t_64_sync+0x1a0/0x1a4 [ 86.612115][ T5455] irq event stamp: 80426 [ 86.612782][ T5455] hardirqs last enabled at (80425): [] __up_console_sem+0xb4/0xfc [ 86.614315][ T5455] hardirqs last disabled at (80426): [] el1_dbg+0x24/0x80 [ 86.615727][ T5455] softirqs last enabled at (80406): [] handle_softirqs+0xa40/0xbe4 [ 86.617387][ T5455] softirqs last disabled at (80389): [] __irq_exit_rcu+0x240/0x43c [ 86.618901][ T5455] ---[ end trace 9bf576fe55b81160 ]--- [ 86.622727][ T5455] BTRFS: error (device loop0) in __btrfs_unlink_inode:4182: errno=-12 Out of memory [ 86.624595][ T5455] BTRFS info (device loop0): forced readonly [ 86.800928][ T5477] loop0: detected capacity change from 0 to 32768 [ 86.859762][ T5477] BTRFS: device fsid c9fe44da-de57-406a-8241-57ec7d4412cf devid 1 transid 8 /dev/loop0 scanned by syz.0.40 (5477) [ 86.864892][ T5477] BTRFS info (device loop0): using crc32c (crc32c-generic) checksum algorithm [ 86.866317][ T5477] BTRFS info (device loop0): using free space tree [ 86.867492][ T5477] BTRFS info (device loop0): has skinny extents [ 86.875639][ T5477] BTRFS info (device loop0): enabling ssd optimizations [ 86.879758][ T5477] FAULT_INJECTION: forcing a failure. [ 86.879758][ T5477] name failslab, interval 1, probability 0, space 0, times 0 [ 86.881786][ T5477] CPU: 1 PID: 5477 Comm: syz.0.40 Tainted: G W syzkaller #0 [ 86.883235][ T5477] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/26/2026 [ 86.884792][ T5477] Call trace: [ 86.885342][ T5477] dump_backtrace+0x0/0x458 [ 86.886101][ T5477] show_stack+0x2c/0x3c [ 86.886837][ T5477] __dump_stack+0x30/0x40 [ 86.887591][ T5477] dump_stack_lvl+0xf4/0x15c [ 86.888434][ T5477] dump_stack+0x1c/0x5c [ 86.889142][ T5477] should_fail+0x3bc/0x514 [ 86.889872][ T5477] __should_failslab+0xbc/0x10c [ 86.890759][ T5477] should_failslab+0x10/0x28 [ 86.891635][ T5477] slab_pre_alloc_hook+0x64/0xe8 [ 86.892440][ T5477] kmem_cache_alloc_trace+0x98/0x3ec [ 86.893338][ T5477] btrfs_delete_delayed_dir_index+0x22c/0x56c [ 86.894351][ T5477] __btrfs_unlink_inode+0x350/0xaec [ 86.895263][ T5477] btrfs_unlink+0x108/0x258 [ 86.895981][ T5477] vfs_unlink+0x2e0/0x4f4 [ 86.896711][ T5477] do_unlinkat+0x328/0x618 [ 86.897440][ T5477] __arm64_sys_unlinkat+0xe0/0xfc [ 86.898253][ T5477] invoke_syscall+0x98/0x2b0 [ 86.899025][ T5477] el0_svc_common+0x138/0x258 [ 86.899843][ T5477] do_el0_svc+0x58/0x13c [ 86.900503][ T5477] el0_svc+0x78/0x1d0 [ 86.901176][ T5477] el0t_64_sync_handler+0xcc/0xe4 [ 86.901950][ T5477] el0t_64_sync+0x1a0/0x1a4 [ 86.905393][ T5477] ------------[ cut here ]------------ [ 86.906382][ T5477] WARNING: CPU: 1 PID: 5477 at fs/btrfs/inode.c:4182 __btrfs_unlink_inode+0x904/0xaec [ 86.907881][ T5477] Modules linked in: [ 86.908604][ T5477] CPU: 1 PID: 5477 Comm: syz.0.40 Tainted: G W syzkaller #0 [ 86.910077][ T5477] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/26/2026 [ 86.911742][ T5477] pstate: 62400005 (nZCv daif +PAN -UAO +TCO -DIT -SSBS BTYPE=--) [ 86.913035][ T5477] pc : __btrfs_unlink_inode+0x904/0xaec [ 86.913901][ T5477] lr : __btrfs_unlink_inode+0x904/0xaec [ 86.914791][ T5477] sp : ffff800021c17a60 [ 86.915509][ T5477] x29: ffff800021c17b10 x28: ffff0000dd4f4000 x27: ffff0000e25f2410 [ 86.916922][ T5477] x26: 0000000000000100 x25: 00000000fffffff4 x24: ffff0000ca2d96e0 [ 86.918155][ T5477] x23: ffff700004382f54 x22: dfff800000000000 x21: ffff0000ebd63110 [ 86.919477][ T5477] x20: ffff0000de7e4aa8 x19: 1fffe0001bcfc955 x18: 0000000000000001 [ 86.920906][ T5477] x17: 0000000000000000 x16: ffff80001125a830 x15: 00000000ffffffff [ 86.922243][ T5477] x14: 0000000000000001 x13: 1fffe000341f47ab x12: 0000000000ff0100 [ 86.923685][ T5477] x11: 0000000000000000 x10: 0000000000000000 x9 : c67cb65c4ec42e00 [ 86.925058][ T5477] x8 : c67cb65c4ec42e00 x7 : 0000000000000001 x6 : 0000000000000001 [ 86.926513][ T5477] x5 : ffff800021c17378 x4 : ffff80001437f3e0 x3 : ffff800008508edc [ 86.927838][ T5477] x2 : 0000000000000001 x1 : 0000000100000000 x0 : 0000000000000026 [ 86.929219][ T5477] Call trace: [ 86.929774][ T5477] __btrfs_unlink_inode+0x904/0xaec [ 86.930721][ T5477] btrfs_unlink+0x108/0x258 [ 86.931486][ T5477] vfs_unlink+0x2e0/0x4f4 [ 86.932173][ T5477] do_unlinkat+0x328/0x618 [ 86.932831][ T5477] __arm64_sys_unlinkat+0xe0/0xfc [ 86.933681][ T5477] invoke_syscall+0x98/0x2b0 [ 86.934376][ T5477] el0_svc_common+0x138/0x258 [ 86.935051][ T5477] do_el0_svc+0x58/0x13c [ 86.935824][ T5477] el0_svc+0x78/0x1d0 [ 86.936526][ T5477] el0t_64_sync_handler+0xcc/0xe4 [ 86.937414][ T5477] el0t_64_sync+0x1a0/0x1a4 [ 86.938155][ T5477] irq event stamp: 80046 [ 86.938826][ T5477] hardirqs last enabled at (80045): [] __up_console_sem+0xb4/0xfc [ 86.940402][ T5477] hardirqs last disabled at (80046): [] el1_dbg+0x24/0x80 [ 86.941855][ T5477] softirqs last enabled at (80026): [] handle_softirqs+0xa40/0xbe4 [ 86.943532][ T5477] softirqs last disabled at (80011): [] __irq_exit_rcu+0x240/0x43c [ 86.945153][ T5477] ---[ end trace 9bf576fe55b81161 ]--- [ 86.948214][ T5477] BTRFS: error (device loop0) in __btrfs_unlink_inode:4182: errno=-12 Out of memory [ 86.949744][ T5477] BTRFS info (device loop0): forced readonly [ 87.105472][ T5499] loop0: detected capacity change from 0 to 32768 [ 87.145519][ T5499] BTRFS: device fsid c9fe44da-de57-406a-8241-57ec7d4412cf devid 1 transid 8 /dev/loop0 scanned by syz.0.41 (5499) [ 87.150903][ T5499] BTRFS info (device loop0): using crc32c (crc32c-generic) checksum algorithm [ 87.152317][ T5499] BTRFS info (device loop0): using free space tree [ 87.153680][ T5499] BTRFS info (device loop0): has skinny extents [ 87.161604][ T5499] BTRFS info (device loop0): enabling ssd optimizations [ 87.168431][ T5499] FAULT_INJECTION: forcing a failure. [ 87.168431][ T5499] name failslab, interval 1, probability 0, space 0, times 0 [ 87.170430][ T5499] CPU: 1 PID: 5499 Comm: syz.0.41 Tainted: G W syzkaller #0 [ 87.171824][ T5499] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/26/2026 [ 87.173388][ T5499] Call trace: [ 87.173948][ T5499] dump_backtrace+0x0/0x458 [ 87.174687][ T5499] show_stack+0x2c/0x3c [ 87.175348][ T5499] __dump_stack+0x30/0x40 [ 87.176029][ T5499] dump_stack_lvl+0xf4/0x15c [ 87.176793][ T5499] dump_stack+0x1c/0x5c [ 87.177528][ T5499] should_fail+0x3bc/0x514 [ 87.178295][ T5499] __should_failslab+0xbc/0x10c [ 87.179150][ T5499] should_failslab+0x10/0x28 [ 87.179926][ T5499] slab_pre_alloc_hook+0x64/0xe8 [ 87.180708][ T5499] kmem_cache_alloc_trace+0x98/0x3ec [ 87.181571][ T5499] btrfs_delete_delayed_dir_index+0x22c/0x56c [ 87.182569][ T5499] __btrfs_unlink_inode+0x350/0xaec [ 87.183479][ T5499] btrfs_unlink+0x108/0x258 [ 87.184253][ T5499] vfs_unlink+0x2e0/0x4f4 [ 87.185000][ T5499] do_unlinkat+0x328/0x618 [ 87.185734][ T5499] __arm64_sys_unlinkat+0xe0/0xfc [ 87.186567][ T5499] invoke_syscall+0x98/0x2b0 [ 87.187365][ T5499] el0_svc_common+0x138/0x258 [ 87.188175][ T5499] do_el0_svc+0x58/0x13c [ 87.188912][ T5499] el0_svc+0x78/0x1d0 [ 87.189595][ T5499] el0t_64_sync_handler+0xcc/0xe4 [ 87.190435][ T5499] el0t_64_sync+0x1a0/0x1a4 [ 87.192300][ T5499] ------------[ cut here ]------------ [ 87.193394][ T5499] WARNING: CPU: 1 PID: 5499 at fs/btrfs/inode.c:4182 __btrfs_unlink_inode+0x904/0xaec [ 87.194903][ T5499] Modules linked in: [ 87.195573][ T5499] CPU: 1 PID: 5499 Comm: syz.0.41 Tainted: G W syzkaller #0 [ 87.196945][ T5499] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/26/2026 [ 87.198558][ T5499] pstate: 62400005 (nZCv daif +PAN -UAO +TCO -DIT -SSBS BTYPE=--) [ 87.199968][ T5499] pc : __btrfs_unlink_inode+0x904/0xaec [ 87.200932][ T5499] lr : __btrfs_unlink_inode+0x904/0xaec [ 87.201902][ T5499] sp : ffff800021c47a60 [ 87.202651][ T5499] x29: ffff800021c47b10 x28: ffff0000d8da4000 x27: ffff0000e25f2810 [ 87.204042][ T5499] x26: 0000000000000100 x25: 00000000fffffff4 x24: ffff0000c1551160 [ 87.205305][ T5499] x23: ffff700004388f54 x22: dfff800000000000 x21: ffff0000ebd609d0 [ 87.206738][ T5499] x20: ffff0000de7e4f78 x19: 1fffe0001bcfc9ef x18: 0000000000000001 [ 87.208085][ T5499] x17: 0000000000000000 x16: ffff80001125a830 x15: 00000000ffffffff [ 87.209461][ T5499] x14: 0000000000000001 x13: 1fffe000341f47ab x12: 0000000000ff0100 [ 87.210831][ T5499] x11: 0000000000000000 x10: 0000000000000000 x9 : b9b5d02956a9d400 [ 87.212220][ T5499] x8 : b9b5d02956a9d400 x7 : 0000000000000001 x6 : 0000000000000001 [ 87.213629][ T5499] x5 : ffff800021c47378 x4 : ffff80001437f3e0 x3 : ffff800008508edc [ 87.214968][ T5499] x2 : 0000000000000001 x1 : 0000000100000000 x0 : 0000000000000026 [ 87.216290][ T5499] Call trace: [ 87.216805][ T5499] __btrfs_unlink_inode+0x904/0xaec [ 87.217684][ T5499] btrfs_unlink+0x108/0x258 [ 87.218477][ T5499] vfs_unlink+0x2e0/0x4f4 [ 87.219277][ T5499] do_unlinkat+0x328/0x618 [ 87.220018][ T5499] __arm64_sys_unlinkat+0xe0/0xfc [ 87.220847][ T5499] invoke_syscall+0x98/0x2b0 [ 87.221593][ T5499] el0_svc_common+0x138/0x258 [ 87.222375][ T5499] do_el0_svc+0x58/0x13c [ 87.223052][ T5499] el0_svc+0x78/0x1d0 [ 87.223696][ T5499] el0t_64_sync_handler+0xcc/0xe4 [ 87.224530][ T5499] el0t_64_sync+0x1a0/0x1a4 [ 87.225285][ T5499] irq event stamp: 79836 [ 87.225939][ T5499] hardirqs last enabled at (79835): [] __up_console_sem+0xb4/0xfc [ 87.227453][ T5499] hardirqs last disabled at (79836): [] el1_dbg+0x24/0x80 [ 87.228970][ T5499] softirqs last enabled at (79824): [] handle_softirqs+0xa40/0xbe4 [ 87.230686][ T5499] softirqs last disabled at (79813): [] __irq_exit_rcu+0x240/0x43c [ 87.232397][ T5499] ---[ end trace 9bf576fe55b81162 ]--- [ 87.233642][ T5499] BTRFS: error (device loop0) in __btrfs_unlink_inode:4182: errno=-12 Out of memory [ 87.235049][ T5499] BTRFS info (device loop0): forced readonly [ 87.480375][ T5521] BTRFS: device fsid c9fe44da-de57-406a-8241-57ec7d4412cf devid 1 transid 8 /dev/loop0 scanned by syz.0.42 (5521) [ 87.487761][ T5521] BTRFS info (device loop0): using crc32c (crc32c-generic) checksum algorithm [ 87.489290][ T5521] BTRFS info (device loop0): using free space tree [ 87.490395][ T5521] BTRFS info (device loop0): has skinny extents [ 87.500579][ T5521] BTRFS info (device loop0): enabling ssd optimizations [ 87.505425][ T5521] FAULT_INJECTION: forcing a failure. [ 87.505425][ T5521] name failslab, interval 1, probability 0, space 0, times 0 [ 87.507592][ T5521] CPU: 0 PID: 5521 Comm: syz.0.42 Tainted: G W syzkaller #0 [ 87.508967][ T5521] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/26/2026 [ 87.510609][ T5521] Call trace: [ 87.511157][ T5521] dump_backtrace+0x0/0x458 [ 87.511835][ T5521] show_stack+0x2c/0x3c [ 87.512538][ T5521] __dump_stack+0x30/0x40 [ 87.513320][ T5521] dump_stack_lvl+0xf4/0x15c [ 87.514110][ T5521] dump_stack+0x1c/0x5c [ 87.514828][ T5521] should_fail+0x3bc/0x514 [ 87.515598][ T5521] __should_failslab+0xbc/0x10c [ 87.516346][ T5521] should_failslab+0x10/0x28 [ 87.517133][ T5521] slab_pre_alloc_hook+0x64/0xe8 [ 87.517952][ T5521] kmem_cache_alloc_trace+0x98/0x3ec [ 87.518839][ T5521] btrfs_delete_delayed_dir_index+0x22c/0x56c [ 87.519818][ T5521] __btrfs_unlink_inode+0x350/0xaec [ 87.520703][ T5521] btrfs_unlink+0x108/0x258 [ 87.521355][ T5521] vfs_unlink+0x2e0/0x4f4 [ 87.521986][ T5521] do_unlinkat+0x328/0x618 [ 87.522649][ T5521] __arm64_sys_unlinkat+0xe0/0xfc [ 87.523474][ T5521] invoke_syscall+0x98/0x2b0 [ 87.524288][ T5521] el0_svc_common+0x138/0x258 [ 87.525095][ T5521] do_el0_svc+0x58/0x13c [ 87.525808][ T5521] el0_svc+0x78/0x1d0 [ 87.526447][ T5521] el0t_64_sync_handler+0xcc/0xe4 [ 87.527295][ T5521] el0t_64_sync+0x1a0/0x1a4 [ 87.529595][ T5521] ------------[ cut here ]------------ [ 87.530640][ T5521] WARNING: CPU: 0 PID: 5521 at fs/btrfs/inode.c:4182 __btrfs_unlink_inode+0x904/0xaec [ 87.532245][ T5521] Modules linked in: [ 87.532928][ T5521] CPU: 0 PID: 5521 Comm: syz.0.42 Tainted: G W syzkaller #0 [ 87.534358][ T5521] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/26/2026 [ 87.536055][ T5521] pstate: 62400005 (nZCv daif +PAN -UAO +TCO -DIT -SSBS BTYPE=--) [ 87.537350][ T5521] pc : __btrfs_unlink_inode+0x904/0xaec [ 87.538224][ T5521] lr : __btrfs_unlink_inode+0x904/0xaec [ 87.539233][ T5521] sp : ffff800021c17a60 [ 87.539982][ T5521] x29: ffff800021c17b10 x28: ffff0000d93c0000 x27: ffff0000ebdbb410 [ 87.541346][ T5521] x26: 0000000000000100 x25: 00000000fffffff4 x24: ffff0000de357dc0 [ 87.542789][ T5521] x23: ffff700004382f54 x22: dfff800000000000 x21: ffff0000e27e6220 [ 87.544099][ T5521] x20: ffff0000de5bdb58 x19: 1fffe0001bcb7b6b x18: 0000000000000001 [ 87.545368][ T5521] x17: 0000000000000000 x16: ffff80001125a830 x15: 00000000ffffffff [ 87.546746][ T5521] x14: 0000000000000001 x13: 1fffe000341f05ab x12: 0000000000ff0100 [ 87.548180][ T5521] x11: 0000000000000000 x10: 0000000000000000 x9 : 88fb9cbaa00a8d00 [ 87.549334][ T5521] x8 : 88fb9cbaa00a8d00 x7 : 0000000000000001 x6 : 0000000000000001 [ 87.550550][ T5521] x5 : ffff800021c17378 x4 : ffff80001437f3e0 x3 : ffff800008508edc [ 87.551930][ T5521] x2 : 0000000000000001 x1 : 0000000100000000 x0 : 0000000000000026 [ 87.553197][ T5521] Call trace: [ 87.553710][ T5521] __btrfs_unlink_inode+0x904/0xaec [ 87.554522][ T5521] btrfs_unlink+0x108/0x258 [ 87.555292][ T5521] vfs_unlink+0x2e0/0x4f4 [ 87.556025][ T5521] do_unlinkat+0x328/0x618 [ 87.556777][ T5521] __arm64_sys_unlinkat+0xe0/0xfc [ 87.557588][ T5521] invoke_syscall+0x98/0x2b0 [ 87.558260][ T5521] el0_svc_common+0x138/0x258 [ 87.559048][ T5521] do_el0_svc+0x58/0x13c [ 87.559734][ T5521] el0_svc+0x78/0x1d0 [ 87.560363][ T5521] el0t_64_sync_handler+0xcc/0xe4 [ 87.561208][ T5521] el0t_64_sync+0x1a0/0x1a4 [ 87.561905][ T5521] irq event stamp: 81340 [ 87.562565][ T5521] hardirqs last enabled at (81339): [] __up_console_sem+0xb4/0xfc [ 87.564080][ T5521] hardirqs last disabled at (81340): [] el1_dbg+0x24/0x80 [ 87.565568][ T5521] softirqs last enabled at (81320): [] handle_softirqs+0xa40/0xbe4 [ 87.567261][ T5521] softirqs last disabled at (81283): [] __irq_exit_rcu+0x240/0x43c [ 87.568870][ T5521] ---[ end trace 9bf576fe55b81163 ]--- [ 87.571817][ T5521] BTRFS: error (device loop0) in __btrfs_unlink_inode:4182: errno=-12 Out of memory [ 87.574426][ T5521] BTRFS info (device loop0): forced readonly [ 87.748339][ T5544] BTRFS: device fsid c9fe44da-de57-406a-8241-57ec7d4412cf devid 1 transid 8 /dev/loop0 scanned by syz.0.43 (5544) [ 87.752216][ T5544] BTRFS info (device loop0): using crc32c (crc32c-generic) checksum algorithm [ 87.754413][ T5544] BTRFS info (device loop0): using free space tree [ 87.755466][ T5544] BTRFS info (device loop0): has skinny extents [ 87.780680][ T5544] BTRFS info (device loop0): enabling ssd optimizations [ 87.789444][ T5544] FAULT_INJECTION: forcing a failure. [ 87.789444][ T5544] name failslab, interval 1, probability 0, space 0, times 0 [ 87.791546][ T5544] CPU: 0 PID: 5544 Comm: syz.0.43 Tainted: G W syzkaller #0 [ 87.792822][ T5544] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/26/2026 [ 87.794442][ T5544] Call trace: [ 87.794963][ T5544] dump_backtrace+0x0/0x458 [ 87.795646][ T5544] show_stack+0x2c/0x3c [ 87.796304][ T5544] __dump_stack+0x30/0x40 [ 87.797057][ T5544] dump_stack_lvl+0xf4/0x15c [ 87.797763][ T5544] dump_stack+0x1c/0x5c [ 87.798409][ T5544] should_fail+0x3bc/0x514 [ 87.799133][ T5544] __should_failslab+0xbc/0x10c [ 87.799937][ T5544] should_failslab+0x10/0x28 [ 87.800671][ T5544] slab_pre_alloc_hook+0x64/0xe8 [ 87.801579][ T5544] kmem_cache_alloc_trace+0x98/0x3ec [ 87.802460][ T5544] btrfs_delete_delayed_dir_index+0x22c/0x56c [ 87.803463][ T5544] __btrfs_unlink_inode+0x350/0xaec [ 87.804320][ T5544] btrfs_unlink+0x108/0x258 [ 87.805054][ T5544] vfs_unlink+0x2e0/0x4f4 [ 87.805762][ T5544] do_unlinkat+0x328/0x618 [ 87.806513][ T5544] __arm64_sys_unlinkat+0xe0/0xfc [ 87.807333][ T5544] invoke_syscall+0x98/0x2b0 [ 87.808067][ T5544] el0_svc_common+0x138/0x258 [ 87.808941][ T5544] do_el0_svc+0x58/0x13c [ 87.809686][ T5544] el0_svc+0x78/0x1d0 [ 87.810379][ T5544] el0t_64_sync_handler+0xcc/0xe4 [ 87.811258][ T5544] el0t_64_sync+0x1a0/0x1a4 [ 87.815154][ T5544] ------------[ cut here ]------------ [ 87.816167][ T5544] WARNING: CPU: 0 PID: 5544 at fs/btrfs/inode.c:4182 __btrfs_unlink_inode+0x904/0xaec [ 87.817549][ T5544] Modules linked in: [ 87.818143][ T5544] CPU: 0 PID: 5544 Comm: syz.0.43 Tainted: G W syzkaller #0 [ 87.819604][ T5544] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/26/2026 [ 87.821241][ T5544] pstate: 62400005 (nZCv daif +PAN -UAO +TCO -DIT -SSBS BTYPE=--) [ 87.822506][ T5544] pc : __btrfs_unlink_inode+0x904/0xaec [ 87.823491][ T5544] lr : __btrfs_unlink_inode+0x904/0xaec [ 87.824438][ T5544] sp : ffff800021e17a60 [ 87.825077][ T5544] x29: ffff800021e17b10 x28: ffff0000d7dd8000 x27: ffff0000ebdbb810 [ 87.826445][ T5544] x26: 0000000000000100 x25: 00000000fffffff4 x24: ffff0000d5ad3dc0 [ 87.827819][ T5544] x23: ffff7000043c2f54 x22: dfff800000000000 x21: ffff0000ebdef5c0 [ 87.829166][ T5544] x20: ffff0000de5bdaa8 x19: 1fffe0001bcb7b55 x18: 0000000000000001 [ 87.830433][ T5544] x17: 0000000000000000 x16: ffff80001125a830 x15: 00000000ffffffff [ 87.831726][ T5544] x14: 0000000000000001 x13: 1fffe000341f05ab x12: 0000000000ff0100 [ 87.833074][ T5544] x11: 0000000000000000 x10: 0000000000000000 x9 : d31e6fd8fc6da400 [ 87.834379][ T5544] x8 : d31e6fd8fc6da400 x7 : 0000000000000001 x6 : 0000000000000001 [ 87.835675][ T5544] x5 : ffff800021e17378 x4 : ffff80001437f3e0 x3 : ffff800008508edc [ 87.836946][ T5544] x2 : 0000000000000001 x1 : 0000000100000000 x0 : 0000000000000026 [ 87.838185][ T5544] Call trace: [ 87.838657][ T5544] __btrfs_unlink_inode+0x904/0xaec [ 87.839561][ T5544] btrfs_unlink+0x108/0x258 [ 87.840306][ T5544] vfs_unlink+0x2e0/0x4f4 [ 87.841027][ T5544] do_unlinkat+0x328/0x618 [ 87.841675][ T5544] __arm64_sys_unlinkat+0xe0/0xfc [ 87.842492][ T5544] invoke_syscall+0x98/0x2b0 [ 87.843201][ T5544] el0_svc_common+0x138/0x258 [ 87.843878][ T5544] do_el0_svc+0x58/0x13c [ 87.844496][ T5544] el0_svc+0x78/0x1d0 [ 87.845116][ T5544] el0t_64_sync_handler+0xcc/0xe4 [ 87.845990][ T5544] el0t_64_sync+0x1a0/0x1a4 [ 87.846718][ T5544] irq event stamp: 80554 [ 87.847352][ T5544] hardirqs last enabled at (80553): [] __up_console_sem+0xb4/0xfc [ 87.848909][ T5544] hardirqs last disabled at (80554): [] el1_dbg+0x24/0x80 [ 87.850257][ T5544] softirqs last enabled at (80534): [] handle_softirqs+0xa40/0xbe4 [ 87.851930][ T5544] softirqs last disabled at (80419): [] __irq_exit_rcu+0x240/0x43c [ 87.853565][ T5544] ---[ end trace 9bf576fe55b81164 ]--- [ 87.856948][ T5544] BTRFS: error (device loop0) in __btrfs_unlink_inode:4182: errno=-12 Out of memory [ 87.858366][ T5544] BTRFS info (device loop0): forced readonly [ 87.897878][ T4864] BTRFS: device fsid c9fe44da-de57-406a-8241-57ec7d4412cf devid 1 transid 8 /dev/loop0 scanned by udevd (4864) [ 88.144360][ T5565] BTRFS info (device loop0): using crc32c (crc32c-generic) checksum algorithm [ 88.145935][ T5565] BTRFS info (device loop0): using free space tree [ 88.146998][ T5565] BTRFS info (device loop0): has skinny extents [ 88.156238][ T5565] BTRFS info (device loop0): enabling ssd optimizations [ 88.161805][ T5565] FAULT_INJECTION: forcing a failure. [ 88.161805][ T5565] name failslab, interval 1, probability 0, space 0, times 0 [ 88.164019][ T5565] CPU: 0 PID: 5565 Comm: syz.0.44 Tainted: G W syzkaller #0 [ 88.165420][ T5565] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/26/2026 [ 88.166945][ T5565] Call trace: [ 88.167474][ T5565] dump_backtrace+0x0/0x458 [ 88.168259][ T5565] show_stack+0x2c/0x3c [ 88.168929][ T5565] __dump_stack+0x30/0x40 [ 88.169607][ T5565] dump_stack_lvl+0xf4/0x15c [ 88.170309][ T5565] dump_stack+0x1c/0x5c [ 88.170978][ T5565] should_fail+0x3bc/0x514 [ 88.171718][ T5565] __should_failslab+0xbc/0x10c [ 88.172545][ T5565] should_failslab+0x10/0x28 [ 88.173345][ T5565] slab_pre_alloc_hook+0x64/0xe8 [ 88.174139][ T5565] kmem_cache_alloc_trace+0x98/0x3ec [ 88.175042][ T5565] btrfs_delete_delayed_dir_index+0x22c/0x56c [ 88.176036][ T5565] __btrfs_unlink_inode+0x350/0xaec [ 88.176902][ T5565] btrfs_unlink+0x108/0x258 [ 88.177648][ T5565] vfs_unlink+0x2e0/0x4f4 [ 88.178380][ T5565] do_unlinkat+0x328/0x618 [ 88.179084][ T5565] __arm64_sys_unlinkat+0xe0/0xfc [ 88.179977][ T5565] invoke_syscall+0x98/0x2b0 [ 88.180748][ T5565] el0_svc_common+0x138/0x258 [ 88.181516][ T5565] do_el0_svc+0x58/0x13c [ 88.182173][ T5565] el0_svc+0x78/0x1d0 [ 88.182791][ T5565] el0t_64_sync_handler+0xcc/0xe4 [ 88.183678][ T5565] el0t_64_sync+0x1a0/0x1a4 [ 88.184591][ T5565] ------------[ cut here ]------------ [ 88.185636][ T5565] WARNING: CPU: 0 PID: 5565 at fs/btrfs/inode.c:4182 __btrfs_unlink_inode+0x904/0xaec [ 88.187126][ T5565] Modules linked in: [ 88.187758][ T5565] CPU: 0 PID: 5565 Comm: syz.0.44 Tainted: G W syzkaller #0 [ 88.189073][ T5565] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/26/2026 [ 88.190646][ T5565] pstate: 62400005 (nZCv daif +PAN -UAO +TCO -DIT -SSBS BTYPE=--) [ 88.191845][ T5565] pc : __btrfs_unlink_inode+0x904/0xaec [ 88.192728][ T5565] lr : __btrfs_unlink_inode+0x904/0xaec [ 88.193705][ T5565] sp : ffff800021e17a60 [ 88.194366][ T5565] x29: ffff800021e17b10 x28: ffff0000ee6ea000 x27: ffff0000ebdba810 [ 88.195720][ T5565] x26: 0000000000000100 x25: 00000000fffffff4 x24: ffff0000d6373210 [ 88.197054][ T5565] x23: ffff7000043c2f54 x22: dfff800000000000 x21: ffff0000ebdece80 [ 88.198468][ T5565] x20: ffff0000de5bdcb8 x19: 1fffe0001bcb7b97 x18: 0000000000000001 [ 88.199874][ T5565] x17: 0000000000000000 x16: ffff8000083049fc x15: 00000000ffffffff [ 88.201227][ T5565] x14: 0000000000000001 x13: 1ffff000043c2e6c x12: 0000000000ff0100 [ 88.202588][ T5565] x11: 0000000000000000 x10: 0000000000000000 x9 : c6333f8028adaf00 [ 88.203965][ T5565] x8 : c6333f8028adaf00 x7 : 0000000000000001 x6 : 0000000000000001 [ 88.205268][ T5565] x5 : ffff800021e17378 x4 : ffff80001437f3e0 x3 : ffff800008304b0c [ 88.206569][ T5565] x2 : 0000000000000001 x1 : 0000000100000000 x0 : 0000000000000026 [ 88.207910][ T5565] Call trace: [ 88.208427][ T5565] __btrfs_unlink_inode+0x904/0xaec [ 88.209229][ T5565] btrfs_unlink+0x108/0x258 [ 88.209944][ T5565] vfs_unlink+0x2e0/0x4f4 [ 88.210692][ T5565] do_unlinkat+0x328/0x618 [ 88.211443][ T5565] __arm64_sys_unlinkat+0xe0/0xfc [ 88.212331][ T5565] invoke_syscall+0x98/0x2b0 [ 88.213136][ T5565] el0_svc_common+0x138/0x258 [ 88.213950][ T5565] do_el0_svc+0x58/0x13c [ 88.214674][ T5565] el0_svc+0x78/0x1d0 [ 88.215389][ T5565] el0t_64_sync_handler+0xcc/0xe4 [ 88.216270][ T5565] el0t_64_sync+0x1a0/0x1a4 [ 88.217009][ T5565] irq event stamp: 80644 [ 88.217778][ T5565] hardirqs last enabled at (80643): [] __up_console_sem+0xb4/0xfc [ 88.219226][ T5565] hardirqs last disabled at (80644): [] el1_dbg+0x24/0x80 [ 88.220610][ T5565] softirqs last enabled at (80624): [] handle_softirqs+0xa40/0xbe4 [ 88.222191][ T5565] softirqs last disabled at (80605): [] __irq_exit_rcu+0x240/0x43c [ 88.223696][ T5565] ---[ end trace 9bf576fe55b81165 ]--- [ 88.225572][ T5565] BTRFS: error (device loop0) in __btrfs_unlink_inode:4182: errno=-12 Out of memory [ 88.227014][ T5565] BTRFS info (device loop0): forced readonly [ 88.389808][ T5588] BTRFS: device fsid c9fe44da-de57-406a-8241-57ec7d4412cf devid 1 transid 8 /dev/loop0 scanned by syz.0.45 (5588) [ 88.396503][ T5588] BTRFS info (device loop0): using crc32c (crc32c-generic) checksum algorithm [ 88.397949][ T5588] BTRFS info (device loop0): using free space tree [ 88.398964][ T5588] BTRFS info (device loop0): has skinny extents [ 88.513187][ T5588] BTRFS info (device loop0): enabling ssd optimizations [ 88.518328][ T5588] FAULT_INJECTION: forcing a failure. [ 88.518328][ T5588] name failslab, interval 1, probability 0, space 0, times 0 [ 88.520371][ T5588] CPU: 0 PID: 5588 Comm: syz.0.45 Tainted: G W syzkaller #0 [ 88.521911][ T5588] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/26/2026 [ 88.523611][ T5588] Call trace: [ 88.524177][ T5588] dump_backtrace+0x0/0x458 [ 88.524943][ T5588] show_stack+0x2c/0x3c [ 88.525644][ T5588] __dump_stack+0x30/0x40 [ 88.526335][ T5588] dump_stack_lvl+0xf4/0x15c [ 88.527102][ T5588] dump_stack+0x1c/0x5c [ 88.527752][ T5588] should_fail+0x3bc/0x514 [ 88.528468][ T5588] __should_failslab+0xbc/0x10c [ 88.529233][ T5588] should_failslab+0x10/0x28 [ 88.529934][ T5588] slab_pre_alloc_hook+0x64/0xe8 [ 88.530679][ T5588] kmem_cache_alloc_trace+0x98/0x3ec [ 88.531513][ T5588] btrfs_delete_delayed_dir_index+0x22c/0x56c [ 88.532528][ T5588] __btrfs_unlink_inode+0x350/0xaec [ 88.533338][ T5588] btrfs_unlink+0x108/0x258 [ 88.534124][ T5588] vfs_unlink+0x2e0/0x4f4 [ 88.534898][ T5588] do_unlinkat+0x328/0x618 [ 88.535695][ T5588] __arm64_sys_unlinkat+0xe0/0xfc [ 88.536564][ T5588] invoke_syscall+0x98/0x2b0 [ 88.537319][ T5588] el0_svc_common+0x138/0x258 [ 88.538122][ T5588] do_el0_svc+0x58/0x13c [ 88.538850][ T5588] el0_svc+0x78/0x1d0 [ 88.539528][ T5588] el0t_64_sync_handler+0xcc/0xe4 [ 88.540359][ T5588] el0t_64_sync+0x1a0/0x1a4 [ 88.544541][ T5588] ------------[ cut here ]------------ [ 88.545561][ T5588] WARNING: CPU: 0 PID: 5588 at fs/btrfs/inode.c:4182 __btrfs_unlink_inode+0x904/0xaec [ 88.547105][ T5588] Modules linked in: [ 88.547776][ T5588] CPU: 0 PID: 5588 Comm: syz.0.45 Tainted: G W syzkaller #0 [ 88.549216][ T5588] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/26/2026 [ 88.550748][ T5588] pstate: 62400005 (nZCv daif +PAN -UAO +TCO -DIT -SSBS BTYPE=--) [ 88.551950][ T5588] pc : __btrfs_unlink_inode+0x904/0xaec [ 88.552854][ T5588] lr : __btrfs_unlink_inode+0x904/0xaec [ 88.553768][ T5588] sp : ffff800021e17a60 [ 88.554410][ T5588] x29: ffff800021e17b10 x28: ffff0000cefdc000 x27: ffff0000ebdbbc10 [ 88.555736][ T5588] x26: 0000000000000100 x25: 00000000fffffff4 x24: ffff0000cad51160 [ 88.556966][ T5588] x23: ffff7000043c2f54 x22: dfff800000000000 x21: ffff0000ebdea740 [ 88.558209][ T5588] x20: ffff0000de5bde18 x19: 1fffe0001bcb7bc3 x18: 0000000000000001 [ 88.559529][ T5588] x17: 0000000000000000 x16: ffff80001125a830 x15: 00000000ffffffff [ 88.560801][ T5588] x14: 0000000000000001 x13: 1fffe000341f05ab x12: 0000000000ff0100 [ 88.562094][ T5588] x11: 0000000000000000 x10: 0000000000000000 x9 : 356e9b10605a2800 [ 88.563540][ T5588] x8 : 356e9b10605a2800 x7 : 0000000000000001 x6 : 0000000000000001 [ 88.564853][ T5588] x5 : ffff800021e17378 x4 : ffff80001437f3e0 x3 : ffff800008508edc [ 88.566246][ T5588] x2 : 0000000000000001 x1 : 0000000100000000 x0 : 0000000000000026 [ 88.567444][ T5588] Call trace: [ 88.568020][ T5588] __btrfs_unlink_inode+0x904/0xaec [ 88.568911][ T5588] btrfs_unlink+0x108/0x258 [ 88.569737][ T5588] vfs_unlink+0x2e0/0x4f4 [ 88.570461][ T5588] do_unlinkat+0x328/0x618 [ 88.571207][ T5588] __arm64_sys_unlinkat+0xe0/0xfc [ 88.572084][ T5588] invoke_syscall+0x98/0x2b0 [ 88.572858][ T5588] el0_svc_common+0x138/0x258 [ 88.573591][ T5588] do_el0_svc+0x58/0x13c [ 88.574321][ T5588] el0_svc+0x78/0x1d0 [ 88.574988][ T5588] el0t_64_sync_handler+0xcc/0xe4 [ 88.575850][ T5588] el0t_64_sync+0x1a0/0x1a4 [ 88.576610][ T5588] irq event stamp: 81176 [ 88.577271][ T5588] hardirqs last enabled at (81175): [] __up_console_sem+0xb4/0xfc [ 88.578888][ T5588] hardirqs last disabled at (81176): [] el1_dbg+0x24/0x80 [ 88.580232][ T5588] softirqs last enabled at (81156): [] handle_softirqs+0xa40/0xbe4 [ 88.581761][ T5588] softirqs last disabled at (81115): [] __irq_exit_rcu+0x240/0x43c [ 88.583348][ T5588] ---[ end trace 9bf576fe55b81166 ]--- [ 88.588957][ T5588] BTRFS: error (device loop0) in __btrfs_unlink_inode:4182: errno=-12 Out of memory [ 88.590562][ T5588] BTRFS info (device loop0): forced readonly [ 88.818205][ T5611] BTRFS: device fsid c9fe44da-de57-406a-8241-57ec7d4412cf devid 1 transid 8 /dev/loop0 scanned by syz.0.46 (5611) [ 88.823273][ T5611] BTRFS info (device loop0): using crc32c (crc32c-generic) checksum algorithm [ 88.824759][ T5611] BTRFS info (device loop0): using free space tree [ 88.825825][ T5611] BTRFS info (device loop0): has skinny extents [ 88.836903][ T5611] BTRFS info (device loop0): enabling ssd optimizations [ 88.842109][ T5611] FAULT_INJECTION: forcing a failure. [ 88.842109][ T5611] name failslab, interval 1, probability 0, space 0, times 0 [ 88.845063][ T5611] CPU: 1 PID: 5611 Comm: syz.0.46 Tainted: G W syzkaller #0 [ 88.846356][ T5611] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/26/2026 [ 88.847939][ T5611] Call trace: [ 88.848442][ T5611] dump_backtrace+0x0/0x458 [ 88.849150][ T5611] show_stack+0x2c/0x3c [ 88.849835][ T5611] __dump_stack+0x30/0x40 [ 88.850651][ T5611] dump_stack_lvl+0xf4/0x15c [ 88.851473][ T5611] dump_stack+0x1c/0x5c [ 88.852146][ T5611] should_fail+0x3bc/0x514 [ 88.852918][ T5611] __should_failslab+0xbc/0x10c [ 88.853786][ T5611] should_failslab+0x10/0x28 [ 88.854585][ T5611] slab_pre_alloc_hook+0x64/0xe8 [ 88.855340][ T5611] kmem_cache_alloc_trace+0x98/0x3ec [ 88.856218][ T5611] btrfs_delete_delayed_dir_index+0x22c/0x56c [ 88.857275][ T5611] __btrfs_unlink_inode+0x350/0xaec [ 88.858145][ T5611] btrfs_unlink+0x108/0x258 [ 88.858878][ T5611] vfs_unlink+0x2e0/0x4f4 [ 88.859588][ T5611] do_unlinkat+0x328/0x618 [ 88.860292][ T5611] __arm64_sys_unlinkat+0xe0/0xfc [ 88.861105][ T5611] invoke_syscall+0x98/0x2b0 [ 88.861919][ T5611] el0_svc_common+0x138/0x258 [ 88.862737][ T5611] do_el0_svc+0x58/0x13c [ 88.863479][ T5611] el0_svc+0x78/0x1d0 [ 88.864139][ T5611] el0t_64_sync_handler+0xcc/0xe4 [ 88.865041][ T5611] el0t_64_sync+0x1a0/0x1a4 [ 88.867024][ T5611] ------------[ cut here ]------------ [ 88.868012][ T5611] WARNING: CPU: 1 PID: 5611 at fs/btrfs/inode.c:4182 __btrfs_unlink_inode+0x904/0xaec [ 88.869543][ T5611] Modules linked in: [ 88.870228][ T5611] CPU: 1 PID: 5611 Comm: syz.0.46 Tainted: G W syzkaller #0 [ 88.871646][ T5611] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/26/2026 [ 88.873276][ T5611] pstate: 62400005 (nZCv daif +PAN -UAO +TCO -DIT -SSBS BTYPE=--) [ 88.874603][ T5611] pc : __btrfs_unlink_inode+0x904/0xaec [ 88.875470][ T5611] lr : __btrfs_unlink_inode+0x904/0xaec [ 88.876434][ T5611] sp : ffff8000223b7a60 [ 88.877124][ T5611] x29: ffff8000223b7b10 x28: ffff0000db934000 x27: ffff0000e25f0810 [ 88.878475][ T5611] x26: 0000000000000100 x25: 00000000fffffff4 x24: ffff0000eb15e580 [ 88.879823][ T5611] x23: ffff700004476f54 x22: dfff800000000000 x21: ffff0000e27413a0 [ 88.881161][ T5611] x20: ffff0000de7e45d8 x19: 1fffe0001bcfc8bb x18: 0000000000000001 [ 88.882504][ T5611] x17: 0000000000000000 x16: ffff80001125a830 x15: 00000000ffffffff [ 88.883947][ T5611] x14: 0000000000000001 x13: 1fffe000341f47ab x12: 0000000000ff0100 [ 88.885374][ T5611] x11: 0000000000000000 x10: 0000000000000000 x9 : 92457c512f549900 [ 88.886666][ T5611] x8 : 92457c512f549900 x7 : 0000000000000001 x6 : 0000000000000001 [ 88.887900][ T5611] x5 : ffff8000223b7378 x4 : ffff80001437f3e0 x3 : ffff800008508edc [ 88.889111][ T5611] x2 : 0000000000000001 x1 : 0000000100000000 x0 : 0000000000000026 [ 88.890320][ T5611] Call trace: [ 88.890786][ T5611] __btrfs_unlink_inode+0x904/0xaec [ 88.891624][ T5611] btrfs_unlink+0x108/0x258 [ 88.892327][ T5611] vfs_unlink+0x2e0/0x4f4 [ 88.893027][ T5611] do_unlinkat+0x328/0x618 [ 88.893673][ T5611] __arm64_sys_unlinkat+0xe0/0xfc [ 88.894417][ T5611] invoke_syscall+0x98/0x2b0 [ 88.895140][ T5611] el0_svc_common+0x138/0x258 [ 88.895922][ T5611] do_el0_svc+0x58/0x13c [ 88.896628][ T5611] el0_svc+0x78/0x1d0 [ 88.897320][ T5611] el0t_64_sync_handler+0xcc/0xe4 [ 88.898122][ T5611] el0t_64_sync+0x1a0/0x1a4 [ 88.898866][ T5611] irq event stamp: 82626 [ 88.899592][ T5611] hardirqs last enabled at (82625): [] __up_console_sem+0xb4/0xfc [ 88.901212][ T5611] hardirqs last disabled at (82626): [] el1_dbg+0x24/0x80 [ 88.902744][ T5611] softirqs last enabled at (82606): [] handle_softirqs+0xa40/0xbe4 [ 88.904283][ T5611] softirqs last disabled at (82495): [] __irq_exit_rcu+0x240/0x43c [ 88.905767][ T5611] ---[ end trace 9bf576fe55b81167 ]--- [ 88.907115][ T5611] BTRFS: error (device loop0) in __btrfs_unlink_inode:4182: errno=-12 Out of memory [ 88.908763][ T5611] BTRFS info (device loop0): forced readonly [ 89.124643][ T5633] BTRFS: device fsid c9fe44da-de57-406a-8241-57ec7d4412cf devid 1 transid 8 /dev/loop0 scanned by syz.0.47 (5633) [ 89.128167][ T5633] BTRFS info (device loop0): using crc32c (crc32c-generic) checksum algorithm [ 89.129624][ T5633] BTRFS info (device loop0): using free space tree [ 89.130714][ T5633] BTRFS info (device loop0): has skinny extents [ 89.143194][ T5633] BTRFS info (device loop0): enabling ssd optimizations [ 89.147534][ T5633] FAULT_INJECTION: forcing a failure. [ 89.147534][ T5633] name failslab, interval 1, probability 0, space 0, times 0 [ 89.149566][ T5633] CPU: 0 PID: 5633 Comm: syz.0.47 Tainted: G W syzkaller #0 [ 89.150971][ T5633] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/26/2026 [ 89.152518][ T5633] Call trace: [ 89.153054][ T5633] dump_backtrace+0x0/0x458 [ 89.153764][ T5633] show_stack+0x2c/0x3c [ 89.154417][ T5633] __dump_stack+0x30/0x40 [ 89.155070][ T5633] dump_stack_lvl+0xf4/0x15c [ 89.155818][ T5633] dump_stack+0x1c/0x5c [ 89.156496][ T5633] should_fail+0x3bc/0x514 [ 89.157213][ T5633] __should_failslab+0xbc/0x10c [ 89.157964][ T5633] should_failslab+0x10/0x28 [ 89.158752][ T5633] slab_pre_alloc_hook+0x64/0xe8 [ 89.159585][ T5633] kmem_cache_alloc_trace+0x98/0x3ec [ 89.160452][ T5633] btrfs_delete_delayed_dir_index+0x22c/0x56c [ 89.161407][ T5633] __btrfs_unlink_inode+0x350/0xaec [ 89.162286][ T5633] btrfs_unlink+0x108/0x258 [ 89.163018][ T5633] vfs_unlink+0x2e0/0x4f4 [ 89.163719][ T5633] do_unlinkat+0x328/0x618 [ 89.164361][ T5633] __arm64_sys_unlinkat+0xe0/0xfc [ 89.165150][ T5633] invoke_syscall+0x98/0x2b0 [ 89.165954][ T5633] el0_svc_common+0x138/0x258 [ 89.166747][ T5633] do_el0_svc+0x58/0x13c [ 89.167387][ T5633] el0_svc+0x78/0x1d0 [ 89.168013][ T5633] el0t_64_sync_handler+0xcc/0xe4 [ 89.168771][ T5633] el0t_64_sync+0x1a0/0x1a4 [ 89.171763][ T5633] ------------[ cut here ]------------ [ 89.172711][ T5633] WARNING: CPU: 0 PID: 5633 at fs/btrfs/inode.c:4182 __btrfs_unlink_inode+0x904/0xaec [ 89.174273][ T5633] Modules linked in: [ 89.174856][ T5633] CPU: 0 PID: 5633 Comm: syz.0.47 Tainted: G W syzkaller #0 [ 89.176335][ T5633] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/26/2026 [ 89.177899][ T5633] pstate: 62400005 (nZCv daif +PAN -UAO +TCO -DIT -SSBS BTYPE=--) [ 89.179200][ T5633] pc : __btrfs_unlink_inode+0x904/0xaec [ 89.180145][ T5633] lr : __btrfs_unlink_inode+0x904/0xaec [ 89.181048][ T5633] sp : ffff8000224c7a60 [ 89.181735][ T5633] x29: ffff8000224c7b10 x28: ffff0000c9ffe000 x27: ffff0000ebdbb010 [ 89.183274][ T5633] x26: 0000000000000100 x25: 00000000fffffff4 x24: ffff0000cfd6d630 [ 89.184551][ T5633] x23: ffff700004498f54 x22: dfff800000000000 x21: ffff0000ebde89d0 [ 89.185993][ T5633] x20: ffff0000de5bd1b8 x19: 1fffe0001bcb7a37 x18: 0000000000000001 [ 89.187367][ T5633] x17: 0000000000000000 x16: ffff80001125a830 x15: 00000000ffffffff [ 89.188712][ T5633] x14: 0000000000000001 x13: 1fffe000341f05ab x12: 0000000000ff0100 [ 89.189950][ T5633] x11: 0000000000000000 x10: 0000000000000000 x9 : d9b36f326e7c1500 [ 89.191345][ T5633] x8 : d9b36f326e7c1500 x7 : 0000000000000001 x6 : 0000000000000001 [ 89.192695][ T5633] x5 : ffff8000224c7378 x4 : ffff80001437f3e0 x3 : ffff800008508edc [ 89.194081][ T5633] x2 : 0000000000000001 x1 : 0000000100000000 x0 : 0000000000000026 [ 89.195467][ T5633] Call trace: [ 89.196018][ T5633] __btrfs_unlink_inode+0x904/0xaec [ 89.196923][ T5633] btrfs_unlink+0x108/0x258 [ 89.197655][ T5633] vfs_unlink+0x2e0/0x4f4 [ 89.198367][ T5633] do_unlinkat+0x328/0x618 [ 89.199091][ T5633] __arm64_sys_unlinkat+0xe0/0xfc [ 89.199899][ T5633] invoke_syscall+0x98/0x2b0 [ 89.200671][ T5633] el0_svc_common+0x138/0x258 [ 89.201436][ T5633] do_el0_svc+0x58/0x13c [ 89.202178][ T5633] el0_svc+0x78/0x1d0 [ 89.202857][ T5633] el0t_64_sync_handler+0xcc/0xe4 [ 89.203722][ T5633] el0t_64_sync+0x1a0/0x1a4 [ 89.204390][ T5633] irq event stamp: 80438 [ 89.205121][ T5633] hardirqs last enabled at (80437): [] __up_console_sem+0xb4/0xfc [ 89.206662][ T5633] hardirqs last disabled at (80438): [] el1_dbg+0x24/0x80 [ 89.207985][ T5633] softirqs last enabled at (80418): [] handle_softirqs+0xa40/0xbe4 [ 89.209463][ T5633] softirqs last disabled at (80399): [] __irq_exit_rcu+0x240/0x43c [ 89.211099][ T5633] ---[ end trace 9bf576fe55b81168 ]--- [ 89.214465][ T5633] BTRFS: error (device loop0) in __btrfs_unlink_inode:4182: errno=-12 Out of memory [ 89.216170][ T5633] BTRFS info (device loop0): forced readonly