Warning: Permanently added '10.128.0.93' (ED25519) to the list of known hosts. 1970/01/01 00:01:04 ignoring optional flag "type"="gce" 1970/01/01 00:01:04 parsed 1 programs [ 65.704298][ T4407] Adding 124996k swap on ./swap-file. Priority:0 extents:1 across:124996k SSFS [ 66.835225][ T4521] chnl_net:caif_netlink_parms(): no params data found [ 66.852261][ T4521] bridge0: port 1(bridge_slave_0) entered blocking state [ 66.853477][ T4521] bridge0: port 1(bridge_slave_0) entered disabled state [ 66.855104][ T4521] device bridge_slave_0 entered promiscuous mode [ 66.857033][ T4521] bridge0: port 2(bridge_slave_1) entered blocking state [ 66.858220][ T4521] bridge0: port 2(bridge_slave_1) entered disabled state [ 66.859736][ T4521] device bridge_slave_1 entered promiscuous mode [ 66.869361][ T4521] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 66.872242][ T4521] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 66.879664][ T4521] team0: Port device team_slave_0 added [ 66.881263][ T4521] team0: Port device team_slave_1 added [ 66.887568][ T4521] batman_adv: batadv0: Adding interface: batadv_slave_0 [ 66.888668][ T4521] batman_adv: batadv0: The MTU of interface batadv_slave_0 is too small (1500) to handle the transport of batman-adv packets. Packets going over this interface will be fragmented on layer2 which could impact the performance. Setting the MTU to 1560 would solve the problem. [ 66.893077][ T4521] batman_adv: batadv0: Not using interface batadv_slave_0 (retrying later): interface not active [ 66.896069][ T4521] batman_adv: batadv0: Adding interface: batadv_slave_1 [ 66.897139][ T4521] batman_adv: batadv0: The MTU of interface batadv_slave_1 is too small (1500) to handle the transport of batman-adv packets. Packets going over this interface will be fragmented on layer2 which could impact the performance. Setting the MTU to 1560 would solve the problem. [ 66.901357][ T4521] batman_adv: batadv0: Not using interface batadv_slave_1 (retrying later): interface not active [ 66.925880][ T4521] device hsr_slave_0 entered promiscuous mode [ 66.965030][ T4521] device hsr_slave_1 entered promiscuous mode [ 67.529493][ T4521] netdevsim netdevsim0 netdevsim0: renamed from eth0 [ 67.546335][ T4521] netdevsim netdevsim0 netdevsim1: renamed from eth1 [ 67.585884][ T4521] netdevsim netdevsim0 netdevsim2: renamed from eth2 [ 67.616919][ T4521] netdevsim netdevsim0 netdevsim3: renamed from eth3 [ 67.663248][ T4521] bridge0: port 2(bridge_slave_1) entered blocking state [ 67.664549][ T4521] bridge0: port 2(bridge_slave_1) entered forwarding state [ 67.665987][ T4521] bridge0: port 1(bridge_slave_0) entered blocking state [ 67.667186][ T4521] bridge0: port 1(bridge_slave_0) entered forwarding state [ 67.684556][ T4521] 8021q: adding VLAN 0 to HW filter on device bond0 [ 67.691954][ T4212] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 67.693773][ T4212] bridge0: port 1(bridge_slave_0) entered disabled state [ 67.696031][ T4212] bridge0: port 2(bridge_slave_1) entered disabled state [ 67.697732][ T4212] IPv6: ADDRCONF(NETDEV_CHANGE): bond0: link becomes ready [ 67.716480][ T4521] 8021q: adding VLAN 0 to HW filter on device team0 [ 67.726751][ T1604] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 67.728280][ T1604] bridge0: port 1(bridge_slave_0) entered blocking state [ 67.729443][ T1604] bridge0: port 1(bridge_slave_0) entered forwarding state [ 67.730912][ T1604] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 67.732483][ T1604] bridge0: port 2(bridge_slave_1) entered blocking state [ 67.733775][ T1604] bridge0: port 2(bridge_slave_1) entered forwarding state [ 67.745833][ T1604] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 67.751086][ T4521] hsr0: Slave A (hsr_slave_0) is not up; please bring it up to get a fully working HSR network [ 67.752667][ T4521] hsr0: Slave B (hsr_slave_1) is not up; please bring it up to get a fully working HSR network [ 67.758220][ T1604] IPv6: ADDRCONF(NETDEV_CHANGE): team0: link becomes ready [ 67.760013][ T1604] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 67.764161][ T1604] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 67.766896][ T1604] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 67.768683][ T1604] IPv6: ADDRCONF(NETDEV_CHANGE): hsr0: link becomes ready [ 67.827446][ T1604] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan0: link becomes ready [ 67.828810][ T1604] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan1: link becomes ready [ 67.840394][ T4521] 8021q: adding VLAN 0 to HW filter on device batadv0 [ 67.848648][ T136] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_virt_wifi: link becomes ready [ 67.850355][ T136] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_virt_wifi: link becomes ready [ 67.860655][ T136] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_vlan: link becomes ready [ 67.862080][ T136] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_vlan: link becomes ready [ 67.863581][ T136] IPv6: ADDRCONF(NETDEV_CHANGE): vlan0: link becomes ready [ 67.865656][ T136] IPv6: ADDRCONF(NETDEV_CHANGE): vlan1: link becomes ready [ 67.869214][ T4521] device veth0_vlan entered promiscuous mode [ 67.873547][ T4521] device veth1_vlan entered promiscuous mode [ 67.881769][ T136] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan0: link becomes ready [ 67.883376][ T136] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan1: link becomes ready [ 67.885181][ T136] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_macvtap: link becomes ready [ 67.886619][ T136] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_macvtap: link becomes ready [ 67.889847][ T4521] device veth0_macvtap entered promiscuous mode [ 67.892251][ T4521] device veth1_macvtap entered promiscuous mode [ 67.899988][ T4521] batman_adv: batadv0: Interface activated: batadv_slave_0 [ 67.901236][ T136] IPv6: ADDRCONF(NETDEV_CHANGE): macvtap0: link becomes ready [ 67.902818][ T136] IPv6: ADDRCONF(NETDEV_CHANGE): macsec0: link becomes ready [ 67.904209][ T136] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_0: link becomes ready [ 67.906444][ T136] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_batadv: link becomes ready [ 67.909569][ T4521] batman_adv: batadv0: Interface activated: batadv_slave_1 [ 67.911486][ T1604] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_1: link becomes ready [ 67.912928][ T1604] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_batadv: link becomes ready [ 67.924935][ T4521] netdevsim netdevsim0 netdevsim0: set [1, 0] type 2 family 0 port 6081 - 0 [ 67.926427][ T4521] netdevsim netdevsim0 netdevsim1: set [1, 0] type 2 family 0 port 6081 - 0 [ 67.927894][ T4521] netdevsim netdevsim0 netdevsim2: set [1, 0] type 2 family 0 port 6081 - 0 [ 67.929358][ T4521] netdevsim netdevsim0 netdevsim3: set [1, 0] type 2 family 0 port 6081 - 0 [ 68.344282][ T136] wlan0: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 68.347203][ T136] wlan0: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 68.348368][ T1604] wlan1: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 68.348577][ T136] IPv6: ADDRCONF(NETDEV_CHANGE): wlan0: link becomes ready [ 68.349807][ T1604] wlan1: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 68.354537][ T136] IPv6: ADDRCONF(NETDEV_CHANGE): wlan1: link becomes ready [ 68.650012][ T148] netdevsim netdevsim0 netdevsim3 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 1970/01/01 00:01:08 executed programs: 0 [ 69.001826][ T4753] chnl_net:caif_netlink_parms(): no params data found [ 69.022547][ T4753] bridge0: port 1(bridge_slave_0) entered blocking state [ 69.023797][ T4753] bridge0: port 1(bridge_slave_0) entered disabled state [ 69.025863][ T4753] device bridge_slave_0 entered promiscuous mode [ 69.028869][ T4753] bridge0: port 2(bridge_slave_1) entered blocking state [ 69.030083][ T4753] bridge0: port 2(bridge_slave_1) entered disabled state [ 69.031660][ T4753] device bridge_slave_1 entered promiscuous mode [ 69.042182][ T4753] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 69.045215][ T4753] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 69.055288][ T4753] team0: Port device team_slave_0 added [ 69.061693][ T4753] team0: Port device team_slave_1 added [ 69.068739][ T4753] batman_adv: batadv0: Adding interface: batadv_slave_0 [ 69.069909][ T4753] 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. [ 69.074397][ T4753] batman_adv: batadv0: Not using interface batadv_slave_0 (retrying later): interface not active [ 69.078619][ T4753] batman_adv: batadv0: Adding interface: batadv_slave_1 [ 69.079692][ T4753] 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. [ 69.084084][ T4753] batman_adv: batadv0: Not using interface batadv_slave_1 (retrying later): interface not active [ 69.127197][ T4753] device hsr_slave_0 entered promiscuous mode [ 69.155024][ T4753] device hsr_slave_1 entered promiscuous mode [ 69.174820][ T4753] debugfs: Directory 'hsr0' with parent 'hsr' already present! [ 69.176086][ T4753] Cannot create hsr debugfs directory [ 69.606095][ T1539] cfg80211: failed to load regulatory.db [ 69.613508][ T2062] ieee802154 phy0 wpan0: encryption failed: -22 [ 69.614677][ T2062] ieee802154 phy1 wpan1: encryption failed: -22 [ 70.727682][ T148] netdevsim netdevsim0 netdevsim2 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 70.965185][ T1539] Bluetooth: hci1: command 0x0409 tx timeout [ 73.054943][ T4100] Bluetooth: hci1: command 0x041b tx timeout [ 73.067761][ T148] netdevsim netdevsim0 netdevsim1 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 73.108151][ T148] netdevsim netdevsim0 netdevsim0 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 74.118258][ T4753] netdevsim netdevsim0 netdevsim0: renamed from eth0 [ 74.166506][ T4753] netdevsim netdevsim0 netdevsim1: renamed from eth1 [ 74.205873][ T4753] netdevsim netdevsim0 netdevsim2: renamed from eth2 [ 74.256174][ T4753] netdevsim netdevsim0 netdevsim3: renamed from eth3 [ 74.315931][ T4753] 8021q: adding VLAN 0 to HW filter on device bond0 [ 74.319516][ T1604] IPv6: ADDRCONF(NETDEV_CHANGE): veth1: link becomes ready [ 74.321131][ T1604] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 74.323930][ T4753] 8021q: adding VLAN 0 to HW filter on device team0 [ 74.326769][ T1604] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bridge: link becomes ready [ 74.328450][ T1604] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 74.329938][ T1604] bridge0: port 1(bridge_slave_0) entered blocking state [ 74.331049][ T1604] bridge0: port 1(bridge_slave_0) entered forwarding state [ 74.332465][ T1604] IPv6: ADDRCONF(NETDEV_CHANGE): bridge0: link becomes ready [ 74.335355][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bridge: link becomes ready [ 74.336867][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 74.338358][ T9] bridge0: port 2(bridge_slave_1) entered blocking state [ 74.339554][ T9] bridge0: port 2(bridge_slave_1) entered forwarding state [ 74.342406][ T1604] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bond: link becomes ready [ 74.357770][ T1604] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bond: link becomes ready [ 74.360467][ T1604] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_team: link becomes ready [ 74.362240][ T1604] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 74.363862][ T1604] IPv6: ADDRCONF(NETDEV_CHANGE): team0: link becomes ready [ 74.367058][ T1604] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_team: link becomes ready [ 74.368661][ T1604] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 74.371203][ T1604] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_hsr: link becomes ready [ 74.372646][ T1604] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 74.375752][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_hsr: link becomes ready [ 74.377330][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 74.379877][ T4753] IPv6: ADDRCONF(NETDEV_CHANGE): hsr0: link becomes ready [ 74.416355][ T1604] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan1: link becomes ready [ 74.417675][ T1604] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan0: link becomes ready [ 74.420538][ T4753] 8021q: adding VLAN 0 to HW filter on device batadv0 [ 74.431238][ T1604] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_virt_wifi: link becomes ready [ 74.433109][ T1604] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_virt_wifi: link becomes ready [ 74.439854][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_vlan: link becomes ready [ 74.441433][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_vlan: link becomes ready [ 74.443174][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): vlan0: link becomes ready [ 74.444515][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): vlan1: link becomes ready [ 74.446555][ T4753] device veth0_vlan entered promiscuous mode [ 74.449724][ T4753] device veth1_vlan entered promiscuous mode [ 74.457470][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan0: link becomes ready [ 74.459122][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan1: link becomes ready [ 74.460834][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_macvtap: link becomes ready [ 74.462465][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_macvtap: link becomes ready [ 74.465024][ T4753] device veth0_macvtap entered promiscuous mode [ 74.468012][ T4753] device veth1_macvtap entered promiscuous mode [ 74.473098][ T4753] batman_adv: The newly added mac address (aa:aa:aa:aa:aa:3e) already exists on: batadv_slave_0 [ 74.474947][ T4753] batman_adv: It is strongly recommended to keep mac addresses unique to avoid problems! [ 74.477021][ T4753] batman_adv: batadv0: Interface activated: batadv_slave_0 [ 74.478405][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): macvtap0: link becomes ready [ 74.479803][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): macsec0: link becomes ready [ 74.481285][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_0: link becomes ready [ 74.482765][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_batadv: link becomes ready [ 74.485724][ T4753] batman_adv: The newly added mac address (aa:aa:aa:aa:aa:3f) already exists on: batadv_slave_1 [ 74.487506][ T4753] batman_adv: It is strongly recommended to keep mac addresses unique to avoid problems! [ 74.489575][ T4753] batman_adv: batadv0: Interface activated: batadv_slave_1 [ 74.490936][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_1: link becomes ready [ 74.492523][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_batadv: link becomes ready [ 74.495394][ T4753] netdevsim netdevsim0 netdevsim0: set [1, 0] type 2 family 0 port 6081 - 0 [ 74.496788][ T4753] netdevsim netdevsim0 netdevsim1: set [1, 0] type 2 family 0 port 6081 - 0 [ 74.498215][ T4753] netdevsim netdevsim0 netdevsim2: set [1, 0] type 2 family 0 port 6081 - 0 [ 74.499620][ T4753] netdevsim netdevsim0 netdevsim3: set [1, 0] type 2 family 0 port 6081 - 0 [ 74.517405][ T136] wlan0: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 74.518708][ T136] wlan0: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 74.520190][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): wlan0: link becomes ready [ 74.528437][ T9] wlan1: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 74.529653][ T9] wlan1: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 74.531027][ T136] IPv6: ADDRCONF(NETDEV_CHANGE): wlan1: link becomes ready 1970/01/01 00:01:14 executed programs: 2 [ 74.652411][ T4975] loop0: detected capacity change from 0 to 32768 [ 74.658523][ T4975] BTRFS: device fsid ed167579-eb65-4e76-9a50-61ac97e9b59d devid 1 transid 8 /dev/loop0 scanned by syz.0.15 (4975) [ 74.663700][ T4975] BTRFS info (device loop0): using sha256 (sha256-ce) checksum algorithm [ 74.665499][ T4975] BTRFS info (device loop0): setting nodatacow, compression disabled [ 74.666800][ T4975] BTRFS info (device loop0): setting datacow [ 74.667942][ T4975] BTRFS info (device loop0): doing ref verification [ 74.669050][ T4975] BTRFS info (device loop0): force clearing of disk cache [ 74.670188][ T4975] BTRFS info (device loop0): turning off barriers [ 74.671270][ T4975] BTRFS info (device loop0): use zlib compression, level 3 [ 74.672419][ T4975] BTRFS info (device loop0): using free space tree [ 74.673658][ T4975] BTRFS info (device loop0): has skinny extents [ 74.691502][ T4975] BTRFS info (device loop0): clearing free space tree [ 74.692822][ T4975] BTRFS info (device loop0): clearing compat-ro feature flag for FREE_SPACE_TREE (0x1) [ 74.694471][ T4975] BTRFS info (device loop0): clearing compat-ro feature flag for FREE_SPACE_TREE_VALID (0x2) [ 74.701974][ T4975] BTRFS info (device loop0): creating free space tree [ 74.704075][ T4975] BTRFS info (device loop0): setting compat-ro feature flag for FREE_SPACE_TREE (0x1) [ 74.705792][ T4975] BTRFS info (device loop0): setting compat-ro feature flag for FREE_SPACE_TREE_VALID (0x2) [ 74.712081][ T4975] FAULT_INJECTION: forcing a failure. [ 74.712081][ T4975] name failslab, interval 1, probability 0, space 0, times 1 [ 74.714287][ T4975] CPU: 1 PID: 4975 Comm: syz.0.15 Not tainted syzkaller #0 [ 74.715539][ T4975] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/18/2026 [ 74.717287][ T4975] Call trace: [ 74.717934][ T4975] dump_backtrace+0x0/0x458 [ 74.718747][ T4975] show_stack+0x2c/0x3c [ 74.719501][ T4975] __dump_stack+0x30/0x40 [ 74.720232][ T4975] dump_stack_lvl+0xf4/0x15c [ 74.721057][ T4975] dump_stack+0x1c/0x5c [ 74.721761][ T4975] should_fail+0x3bc/0x514 [ 74.722513][ T4975] __should_failslab+0xbc/0x10c [ 74.723388][ T4975] should_failslab+0x10/0x28 [ 74.724169][ T4975] slab_pre_alloc_hook+0x64/0xe8 [ 74.725045][ T4975] kmem_cache_alloc+0x94/0x3d4 [ 74.725799][ T4975] btrfs_alloc_path+0x5c/0x68 [ 74.726585][ T4975] btrfs_insert_dir_item+0x184/0x3e8 [ 74.727450][ T4975] btrfs_add_link+0x2b0/0xa9c [ 74.728245][ T4975] btrfs_create+0x468/0x514 [ 74.729068][ T4975] path_openat+0xe18/0x2718 [ 74.729813][ T4975] do_filp_open+0x184/0x368 [ 74.730612][ T4975] do_sys_openat2+0x134/0x3f4 [ 74.731404][ T4975] __arm64_sys_openat+0x118/0x14c [ 74.732359][ T4975] invoke_syscall+0x98/0x2b0 [ 74.733175][ T4975] el0_svc_common+0x138/0x258 [ 74.733971][ T4975] do_el0_svc+0x58/0x13c [ 74.734704][ T4975] el0_svc+0x78/0x1d0 [ 74.735316][ T4975] el0t_64_sync_handler+0xcc/0xe4 [ 74.736170][ T4975] el0t_64_sync+0x1a0/0x1a4 [ 74.737643][ T4975] ------------[ cut here ]------------ [ 74.738646][ T4975] WARNING: CPU: 1 PID: 4975 at fs/btrfs/inode.c:6776 btrfs_add_link+0x718/0xa9c [ 74.740105][ T4975] Modules linked in: [ 74.740740][ T4975] CPU: 1 PID: 4975 Comm: syz.0.15 Not tainted syzkaller #0 [ 74.741865][ T4975] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/18/2026 [ 74.743343][ T4975] pstate: 62400005 (nZCv daif +PAN -UAO +TCO -DIT -SSBS BTYPE=--) [ 74.744553][ T4975] pc : btrfs_add_link+0x718/0xa9c [ 74.745419][ T4975] lr : btrfs_add_link+0x718/0xa9c [ 74.746267][ T4975] sp : ffff80001fdc7580 [ 74.747050][ T4975] x29: ffff80001fdc7680 x28: ffff0000de9de210 x27: 0000000000000108 [ 74.748330][ T4975] x26: 00000000fffffff4 x25: 0000000000000000 x24: dfff800000000000 [ 74.749657][ T4975] x23: 0000000000000014 x22: 1fffe0001bd3bc4d x21: ffff700003fb8eb8 [ 74.751068][ T4975] x20: 00000000fffffff4 x19: ffff0000de9de268 x18: 0000000000000001 [ 74.752357][ T4975] x17: 0000000000000000 x16: ffff80001125f77c x15: 00000000ffffffff [ 74.753629][ T4975] x14: 0000000000000001 x13: 1fffe000341f47ab x12: 0000000000ff0100 [ 74.754993][ T4975] x11: 0000000000000000 x10: 0000000000000000 x9 : d5f2c6276184ff00 [ 74.756451][ T4975] x8 : d5f2c6276184ff00 x7 : 0000000000000001 x6 : 0000000000000001 [ 74.757869][ T4975] x5 : ffff80001fdc6e98 x4 : ffff80001437f3e0 x3 : ffff80000850932c [ 74.759254][ T4975] x2 : 0000000000000001 x1 : 0000000100000000 x0 : 0000000000000026 [ 74.760596][ T4975] Call trace: [ 74.761137][ T4975] btrfs_add_link+0x718/0xa9c [ 74.761932][ T4975] btrfs_create+0x468/0x514 [ 74.762711][ T4975] path_openat+0xe18/0x2718 [ 74.763509][ T4975] do_filp_open+0x184/0x368 [ 74.764289][ T4975] do_sys_openat2+0x134/0x3f4 [ 74.765097][ T4975] __arm64_sys_openat+0x118/0x14c [ 74.766002][ T4975] invoke_syscall+0x98/0x2b0 [ 74.766793][ T4975] el0_svc_common+0x138/0x258 [ 74.767532][ T4975] do_el0_svc+0x58/0x13c [ 74.768270][ T4975] el0_svc+0x78/0x1d0 [ 74.768942][ T4975] el0t_64_sync_handler+0xcc/0xe4 [ 74.769753][ T4975] el0t_64_sync+0x1a0/0x1a4 [ 74.770548][ T4975] irq event stamp: 82732 [ 74.771279][ T4975] hardirqs last enabled at (82731): [] __up_console_sem+0xb4/0xfc [ 74.772935][ T4975] hardirqs last disabled at (82732): [] el1_dbg+0x24/0x80 [ 74.774541][ T4975] softirqs last enabled at (82712): [] handle_softirqs+0xa40/0xbe4 [ 74.776274][ T4975] softirqs last disabled at (82689): [] __irq_exit_rcu+0x240/0x43c [ 74.777845][ T4975] ---[ end trace 98df19d7dd1e49aa ]--- [ 74.779561][ T4975] BTRFS: error (device loop0) in btrfs_add_link:6776: errno=-12 Out of memory [ 74.780849][ T4975] BTRFS info (device loop0): forced readonly [ 74.963761][ T4996] loop0: detected capacity change from 0 to 32768 [ 75.016126][ T4996] BTRFS: device fsid ed167579-eb65-4e76-9a50-61ac97e9b59d devid 1 transid 8 /dev/loop0 scanned by syz.0.16 (4996) [ 75.019567][ T4996] BTRFS info (device loop0): using sha256 (sha256-ce) checksum algorithm [ 75.021004][ T4996] BTRFS info (device loop0): setting nodatacow, compression disabled [ 75.022379][ T4996] BTRFS info (device loop0): setting datacow [ 75.023484][ T4996] BTRFS info (device loop0): doing ref verification [ 75.024525][ T4996] BTRFS info (device loop0): force clearing of disk cache [ 75.026065][ T4996] BTRFS info (device loop0): turning off barriers [ 75.027029][ T4996] BTRFS info (device loop0): use zlib compression, level 3 [ 75.028169][ T4996] BTRFS info (device loop0): using free space tree [ 75.029305][ T4996] BTRFS info (device loop0): has skinny extents [ 75.037445][ T4996] BTRFS info (device loop0): clearing free space tree [ 75.038594][ T4996] BTRFS info (device loop0): clearing compat-ro feature flag for FREE_SPACE_TREE (0x1) [ 75.040178][ T4996] BTRFS info (device loop0): clearing compat-ro feature flag for FREE_SPACE_TREE_VALID (0x2) [ 75.044243][ T4996] BTRFS info (device loop0): creating free space tree [ 75.046251][ T4996] BTRFS info (device loop0): setting compat-ro feature flag for FREE_SPACE_TREE (0x1) [ 75.047697][ T4996] BTRFS info (device loop0): setting compat-ro feature flag for FREE_SPACE_TREE_VALID (0x2) [ 75.052350][ T4996] FAULT_INJECTION: forcing a failure. [ 75.052350][ T4996] name failslab, interval 1, probability 0, space 0, times 0 [ 75.054488][ T4996] CPU: 1 PID: 4996 Comm: syz.0.16 Tainted: G W syzkaller #0 [ 75.056025][ T4996] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/18/2026 [ 75.057759][ T4996] Call trace: [ 75.058290][ T4996] dump_backtrace+0x0/0x458 [ 75.059022][ T4996] show_stack+0x2c/0x3c [ 75.059733][ T4996] __dump_stack+0x30/0x40 [ 75.060466][ T4996] dump_stack_lvl+0xf4/0x15c [ 75.061317][ T4996] dump_stack+0x1c/0x5c [ 75.062043][ T4996] should_fail+0x3bc/0x514 [ 75.062770][ T4996] __should_failslab+0xbc/0x10c [ 75.063670][ T4996] should_failslab+0x10/0x28 [ 75.064458][ T4996] slab_pre_alloc_hook+0x64/0xe8 [ 75.065321][ T4996] kmem_cache_alloc+0x94/0x3d4 [ 75.066177][ T4996] btrfs_alloc_path+0x5c/0x68 [ 75.066972][ T4996] btrfs_insert_dir_item+0x184/0x3e8 [ 75.067889][ T4996] btrfs_add_link+0x2b0/0xa9c [ 75.068691][ T4996] btrfs_create+0x468/0x514 [ 75.069454][ T4996] path_openat+0xe18/0x2718 [ 75.070219][ T4996] do_filp_open+0x184/0x368 [ 75.071003][ T4996] do_sys_openat2+0x134/0x3f4 [ 75.071768][ T4996] __arm64_sys_openat+0x118/0x14c [ 75.072615][ T4996] invoke_syscall+0x98/0x2b0 [ 75.073425][ T4996] el0_svc_common+0x138/0x258 [ 75.074238][ T4996] do_el0_svc+0x58/0x13c [ 75.074881][ T4996] el0_svc+0x78/0x1d0 [ 75.075562][ T4996] el0t_64_sync_handler+0xcc/0xe4 [ 75.076455][ T4996] el0t_64_sync+0x1a0/0x1a4 [ 75.080004][ T4996] ------------[ cut here ]------------ [ 75.081055][ T4996] WARNING: CPU: 1 PID: 4996 at fs/btrfs/inode.c:6776 btrfs_add_link+0x718/0xa9c [ 75.082680][ T4996] Modules linked in: [ 75.083354][ T4996] CPU: 1 PID: 4996 Comm: syz.0.16 Tainted: G W syzkaller #0 [ 75.084768][ T4996] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/18/2026 [ 75.086555][ T4996] pstate: 62400005 (nZCv daif +PAN -UAO +TCO -DIT -SSBS BTYPE=--) [ 75.087864][ T4996] pc : btrfs_add_link+0x718/0xa9c [ 75.088737][ T4996] lr : btrfs_add_link+0x718/0xa9c [ 75.089662][ T4996] sp : ffff80001fe47580 [ 75.090405][ T4996] x29: ffff80001fe47680 x28: ffff0000de9de4d0 x27: 0000000000000108 [ 75.091822][ T4996] x26: 00000000fffffff4 x25: 0000000000000000 x24: dfff800000000000 [ 75.093355][ T4996] x23: 0000000000000014 x22: 1fffe0001bd3bca5 x21: ffff700003fc8eb8 [ 75.094739][ T4996] x20: 00000000fffffff4 x19: ffff0000de9de528 x18: 0000000000000001 [ 75.096114][ T4996] x17: 0000000000000000 x16: ffff80001125f77c x15: 00000000ffffffff [ 75.097510][ T4996] x14: 0000000000000001 x13: 1fffe000341f47ab x12: 0000000000ff0100 [ 75.098882][ T4996] x11: 0000000000000000 x10: 0000000000000000 x9 : 5096d8d35f08fb00 [ 75.100315][ T4996] x8 : 5096d8d35f08fb00 x7 : 0000000000000001 x6 : 0000000000000001 [ 75.101651][ T4996] x5 : ffff80001fe46e98 x4 : ffff80001437f3e0 x3 : ffff80000850932c [ 75.103016][ T4996] x2 : 0000000000000001 x1 : 0000000100000000 x0 : 0000000000000026 [ 75.104371][ T4996] Call trace: [ 75.104902][ T4996] btrfs_add_link+0x718/0xa9c [ 75.105821][ T4996] btrfs_create+0x468/0x514 [ 75.106578][ T4996] path_openat+0xe18/0x2718 [ 75.107301][ T4996] do_filp_open+0x184/0x368 [ 75.108105][ T4996] do_sys_openat2+0x134/0x3f4 [ 75.108938][ T4996] __arm64_sys_openat+0x118/0x14c [ 75.109823][ T4996] invoke_syscall+0x98/0x2b0 [ 75.110615][ T4996] el0_svc_common+0x138/0x258 [ 75.111394][ T4996] do_el0_svc+0x58/0x13c [ 75.112100][ T4996] el0_svc+0x78/0x1d0 [ 75.112795][ T4996] el0t_64_sync_handler+0xcc/0xe4 [ 75.113680][ T4996] el0t_64_sync+0x1a0/0x1a4 [ 75.114447][ T4996] irq event stamp: 80758 [ 75.115198][ T4996] hardirqs last enabled at (80757): [] __up_console_sem+0xb4/0xfc [ 75.116836][ T4996] hardirqs last disabled at (80758): [] el1_dbg+0x24/0x80 [ 75.118391][ T4996] softirqs last enabled at (80738): [] handle_softirqs+0xa40/0xbe4 [ 75.120049][ T4996] softirqs last disabled at (80611): [] __irq_exit_rcu+0x240/0x43c [ 75.121771][ T4996] ---[ end trace 98df19d7dd1e49ab ]--- [ 75.123732][ T4996] BTRFS: error (device loop0) in btrfs_add_link:6776: errno=-12 Out of memory [ 75.125450][ T4947] Bluetooth: hci1: command 0x040f tx timeout [ 75.126845][ T4996] BTRFS info (device loop0): forced readonly [ 75.326890][ T5019] loop0: detected capacity change from 0 to 32768 [ 75.371291][ T5019] BTRFS: device fsid ed167579-eb65-4e76-9a50-61ac97e9b59d devid 1 transid 8 /dev/loop0 scanned by syz.0.17 (5019) [ 75.378097][ T5019] BTRFS info (device loop0): using sha256 (sha256-ce) checksum algorithm [ 75.379854][ T5019] BTRFS info (device loop0): setting nodatacow, compression disabled [ 75.381400][ T5019] BTRFS info (device loop0): setting datacow [ 75.382681][ T5019] BTRFS info (device loop0): doing ref verification [ 75.383667][ T5019] BTRFS info (device loop0): force clearing of disk cache [ 75.386306][ T5019] BTRFS info (device loop0): turning off barriers [ 75.387338][ T5019] BTRFS info (device loop0): use zlib compression, level 3 [ 75.388477][ T5019] BTRFS info (device loop0): using free space tree [ 75.389598][ T5019] BTRFS info (device loop0): has skinny extents [ 75.397536][ T5019] BTRFS info (device loop0): clearing free space tree [ 75.398713][ T5019] BTRFS info (device loop0): clearing compat-ro feature flag for FREE_SPACE_TREE (0x1) [ 75.400404][ T5019] BTRFS info (device loop0): clearing compat-ro feature flag for FREE_SPACE_TREE_VALID (0x2) [ 75.404195][ T5019] BTRFS info (device loop0): creating free space tree [ 75.407243][ T5019] BTRFS info (device loop0): setting compat-ro feature flag for FREE_SPACE_TREE (0x1) [ 75.408740][ T5019] BTRFS info (device loop0): setting compat-ro feature flag for FREE_SPACE_TREE_VALID (0x2) [ 75.413964][ T5019] FAULT_INJECTION: forcing a failure. [ 75.413964][ T5019] name failslab, interval 1, probability 0, space 0, times 0 [ 75.416106][ T5019] CPU: 1 PID: 5019 Comm: syz.0.17 Tainted: G W syzkaller #0 [ 75.417435][ T5019] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/18/2026 [ 75.419089][ T5019] Call trace: [ 75.419653][ T5019] dump_backtrace+0x0/0x458 [ 75.420316][ T5019] show_stack+0x2c/0x3c [ 75.421012][ T5019] __dump_stack+0x30/0x40 [ 75.421729][ T5019] dump_stack_lvl+0xf4/0x15c [ 75.422469][ T5019] dump_stack+0x1c/0x5c [ 75.423151][ T5019] should_fail+0x3bc/0x514 [ 75.423933][ T5019] __should_failslab+0xbc/0x10c [ 75.424725][ T5019] should_failslab+0x10/0x28 [ 75.425508][ T5019] slab_pre_alloc_hook+0x64/0xe8 [ 75.426355][ T5019] kmem_cache_alloc+0x94/0x3d4 [ 75.427167][ T5019] btrfs_get_or_create_delayed_node+0x114/0x4a8 [ 75.428236][ T5019] btrfs_delayed_update_inode+0x3c/0x1b68 [ 75.429244][ T5019] btrfs_update_inode+0x210/0x3d4 [ 75.430069][ T5019] btrfs_create+0x364/0x514 [ 75.430850][ T5019] path_openat+0xe18/0x2718 [ 75.431649][ T5019] do_filp_open+0x184/0x368 [ 75.432452][ T5019] do_sys_openat2+0x134/0x3f4 [ 75.433285][ T5019] __arm64_sys_openat+0x118/0x14c [ 75.434151][ T5019] invoke_syscall+0x98/0x2b0 [ 75.434929][ T5019] el0_svc_common+0x138/0x258 [ 75.435746][ T5019] do_el0_svc+0x58/0x13c [ 75.436476][ T5019] el0_svc+0x78/0x1d0 [ 75.437152][ T5019] el0t_64_sync_handler+0xcc/0xe4 [ 75.437969][ T5019] el0t_64_sync+0x1a0/0x1a4 [ 75.584189][ T5044] loop0: detected capacity change from 0 to 32768 [ 75.696995][ T5044] BTRFS: device fsid ed167579-eb65-4e76-9a50-61ac97e9b59d devid 1 transid 8 /dev/loop0 scanned by syz.0.18 (5044) [ 75.700632][ T5044] BTRFS info (device loop0): using sha256 (sha256-ce) checksum algorithm [ 75.702070][ T5044] BTRFS info (device loop0): setting nodatacow, compression disabled [ 75.703520][ T5044] BTRFS info (device loop0): setting datacow [ 75.704433][ T5044] BTRFS info (device loop0): doing ref verification [ 75.705748][ T5044] BTRFS info (device loop0): force clearing of disk cache [ 75.707016][ T5044] BTRFS info (device loop0): turning off barriers [ 75.708110][ T5044] BTRFS info (device loop0): use zlib compression, level 3 [ 75.709408][ T5044] BTRFS info (device loop0): using free space tree [ 75.710610][ T5044] BTRFS info (device loop0): has skinny extents [ 75.719361][ T5044] BTRFS info (device loop0): clearing free space tree [ 75.720434][ T5044] BTRFS info (device loop0): clearing compat-ro feature flag for FREE_SPACE_TREE (0x1) [ 75.722061][ T5044] BTRFS info (device loop0): clearing compat-ro feature flag for FREE_SPACE_TREE_VALID (0x2) [ 75.725582][ T5044] BTRFS info (device loop0): creating free space tree [ 75.727011][ T5044] BTRFS info (device loop0): setting compat-ro feature flag for FREE_SPACE_TREE (0x1) [ 75.728534][ T5044] BTRFS info (device loop0): setting compat-ro feature flag for FREE_SPACE_TREE_VALID (0x2) [ 75.733321][ T5044] FAULT_INJECTION: forcing a failure. [ 75.733321][ T5044] name failslab, interval 1, probability 0, space 0, times 0 [ 75.736735][ T5044] CPU: 0 PID: 5044 Comm: syz.0.18 Tainted: G W syzkaller #0 [ 75.738167][ T5044] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/18/2026 [ 75.739963][ T5044] Call trace: [ 75.740495][ T5044] dump_backtrace+0x0/0x458 [ 75.741243][ T5044] show_stack+0x2c/0x3c [ 75.741973][ T5044] __dump_stack+0x30/0x40 [ 75.742672][ T5044] dump_stack_lvl+0xf4/0x15c [ 75.743385][ T5044] dump_stack+0x1c/0x5c [ 75.744031][ T5044] should_fail+0x3bc/0x514 [ 75.744809][ T5044] __should_failslab+0xbc/0x10c [ 75.745510][ T5044] should_failslab+0x10/0x28 [ 75.746290][ T5044] slab_pre_alloc_hook+0x64/0xe8 [ 75.747134][ T5044] kmem_cache_alloc+0x94/0x3d4 [ 75.747940][ T5044] btrfs_alloc_path+0x5c/0x68 [ 75.748790][ T5044] btrfs_insert_dir_item+0x184/0x3e8 [ 75.749740][ T5044] btrfs_add_link+0x2b0/0xa9c [ 75.750570][ T5044] btrfs_create+0x468/0x514 [ 75.751373][ T5044] path_openat+0xe18/0x2718 [ 75.752181][ T5044] do_filp_open+0x184/0x368 [ 75.752919][ T5044] do_sys_openat2+0x134/0x3f4 [ 75.753667][ T5044] __arm64_sys_openat+0x118/0x14c [ 75.754583][ T5044] invoke_syscall+0x98/0x2b0 [ 75.755419][ T5044] el0_svc_common+0x138/0x258 [ 75.756275][ T5044] do_el0_svc+0x58/0x13c [ 75.756979][ T5044] el0_svc+0x78/0x1d0 [ 75.757676][ T5044] el0t_64_sync_handler+0xcc/0xe4 [ 75.758495][ T5044] el0t_64_sync+0x1a0/0x1a4 [ 75.760907][ T5044] ------------[ cut here ]------------ [ 75.762425][ T5044] WARNING: CPU: 0 PID: 5044 at fs/btrfs/inode.c:6776 btrfs_add_link+0x718/0xa9c [ 75.763933][ T5044] Modules linked in: [ 75.764619][ T5044] CPU: 0 PID: 5044 Comm: syz.0.18 Tainted: G W syzkaller #0 [ 75.766017][ T5044] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/18/2026 [ 75.767781][ T5044] pstate: 62400005 (nZCv daif +PAN -UAO +TCO -DIT -SSBS BTYPE=--) [ 75.769043][ T5044] pc : btrfs_add_link+0x718/0xa9c [ 75.769842][ T5044] lr : btrfs_add_link+0x718/0xa9c [ 75.770674][ T5044] sp : ffff80001fdd7580 [ 75.771340][ T5044] x29: ffff80001fdd7680 x28: ffff0000de9da2c0 x27: 0000000000000108 [ 75.772602][ T5044] x26: 00000000fffffff4 x25: 0000000000000000 x24: dfff800000000000 [ 75.773853][ T5044] x23: 0000000000000014 x22: 1fffe0001bd3b463 x21: ffff700003fbaeb8 [ 75.775175][ T5044] x20: 00000000fffffff4 x19: ffff0000de9da318 x18: 0000000000000001 [ 75.776393][ T5044] x17: 0000000000000000 x16: ffff80001125f77c x15: 00000000ffffffff [ 75.777666][ T5044] x14: 0000000000000001 x13: 1fffe000341f05ab x12: 0000000000ff0100 [ 75.779004][ T5044] x11: 0000000000000000 x10: 0000000000000000 x9 : 90590bf3d5556d00 [ 75.780377][ T5044] x8 : 90590bf3d5556d00 x7 : 0000000000000001 x6 : 0000000000000001 [ 75.781672][ T5044] x5 : ffff80001fdd6e98 x4 : ffff80001437f3e0 x3 : ffff80000850932c [ 75.782951][ T5044] x2 : 0000000000000001 x1 : 0000000100000000 x0 : 0000000000000026 [ 75.784292][ T5044] Call trace: [ 75.784842][ T5044] btrfs_add_link+0x718/0xa9c [ 75.785655][ T5044] btrfs_create+0x468/0x514 [ 75.786413][ T5044] path_openat+0xe18/0x2718 [ 75.787168][ T5044] do_filp_open+0x184/0x368 [ 75.787940][ T5044] do_sys_openat2+0x134/0x3f4 [ 75.788704][ T5044] __arm64_sys_openat+0x118/0x14c [ 75.789510][ T5044] invoke_syscall+0x98/0x2b0 [ 75.790241][ T5044] el0_svc_common+0x138/0x258 [ 75.790987][ T5044] do_el0_svc+0x58/0x13c [ 75.791687][ T5044] el0_svc+0x78/0x1d0 [ 75.792329][ T5044] el0t_64_sync_handler+0xcc/0xe4 [ 75.793140][ T5044] el0t_64_sync+0x1a0/0x1a4 [ 75.793912][ T5044] irq event stamp: 81414 [ 75.794618][ T5044] hardirqs last enabled at (81413): [] __up_console_sem+0xb4/0xfc [ 75.796336][ T5044] hardirqs last disabled at (81414): [] el1_dbg+0x24/0x80 [ 75.797887][ T5044] softirqs last enabled at (81390): [] handle_softirqs+0xa40/0xbe4 [ 75.799548][ T5044] softirqs last disabled at (81349): [] __irq_exit_rcu+0x240/0x43c [ 75.801242][ T5044] ---[ end trace 98df19d7dd1e49ac ]--- [ 75.802598][ T5044] BTRFS: error (device loop0) in btrfs_add_link:6776: errno=-12 Out of memory [ 75.805106][ T5044] BTRFS info (device loop0): forced readonly [ 75.947451][ T5066] loop0: detected capacity change from 0 to 32768 [ 75.952205][ T5066] BTRFS: device fsid ed167579-eb65-4e76-9a50-61ac97e9b59d devid 1 transid 8 /dev/loop0 scanned by syz.0.19 (5066) [ 75.955412][ T5066] BTRFS info (device loop0): using sha256 (sha256-ce) checksum algorithm [ 75.956699][ T5066] BTRFS info (device loop0): setting nodatacow, compression disabled [ 75.957940][ T5066] BTRFS info (device loop0): setting datacow [ 75.958889][ T5066] BTRFS info (device loop0): doing ref verification [ 75.960022][ T5066] BTRFS info (device loop0): force clearing of disk cache [ 75.961135][ T5066] BTRFS info (device loop0): turning off barriers [ 75.962224][ T5066] BTRFS info (device loop0): use zlib compression, level 3 [ 75.963415][ T5066] BTRFS info (device loop0): using free space tree [ 75.964458][ T5066] BTRFS info (device loop0): has skinny extents [ 75.981256][ T5066] BTRFS info (device loop0): clearing free space tree [ 75.982358][ T5066] BTRFS info (device loop0): clearing compat-ro feature flag for FREE_SPACE_TREE (0x1) [ 75.983961][ T5066] BTRFS info (device loop0): clearing compat-ro feature flag for FREE_SPACE_TREE_VALID (0x2) [ 75.987524][ T5066] BTRFS info (device loop0): creating free space tree [ 75.988960][ T5066] BTRFS info (device loop0): setting compat-ro feature flag for FREE_SPACE_TREE (0x1) [ 75.990524][ T5066] BTRFS info (device loop0): setting compat-ro feature flag for FREE_SPACE_TREE_VALID (0x2) [ 75.996168][ T5066] FAULT_INJECTION: forcing a failure. [ 75.996168][ T5066] name failslab, interval 1, probability 0, space 0, times 0 [ 75.998168][ T5066] CPU: 0 PID: 5066 Comm: syz.0.19 Tainted: G W syzkaller #0 [ 75.999617][ T5066] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/18/2026 [ 76.001187][ T5066] Call trace: [ 76.001750][ T5066] dump_backtrace+0x0/0x458 [ 76.002510][ T5066] show_stack+0x2c/0x3c [ 76.003164][ T5066] __dump_stack+0x30/0x40 [ 76.003852][ T5066] dump_stack_lvl+0xf4/0x15c [ 76.004616][ T5066] dump_stack+0x1c/0x5c [ 76.005319][ T5066] should_fail+0x3bc/0x514 [ 76.006094][ T5066] __should_failslab+0xbc/0x10c [ 76.006940][ T5066] should_failslab+0x10/0x28 [ 76.007709][ T5066] slab_pre_alloc_hook+0x64/0xe8 [ 76.008507][ T5066] kmem_cache_alloc+0x94/0x3d4 [ 76.009280][ T5066] btrfs_alloc_path+0x5c/0x68 [ 76.009987][ T5066] btrfs_insert_dir_item+0x184/0x3e8 [ 76.010922][ T5066] btrfs_add_link+0x2b0/0xa9c [ 76.011710][ T5066] btrfs_create+0x468/0x514 [ 76.012416][ T5066] path_openat+0xe18/0x2718 [ 76.013141][ T5066] do_filp_open+0x184/0x368 [ 76.013916][ T5066] do_sys_openat2+0x134/0x3f4 [ 76.014764][ T5066] __arm64_sys_openat+0x118/0x14c [ 76.015651][ T5066] invoke_syscall+0x98/0x2b0 [ 76.016449][ T5066] el0_svc_common+0x138/0x258 [ 76.017229][ T5066] do_el0_svc+0x58/0x13c [ 76.017924][ T5066] el0_svc+0x78/0x1d0 [ 76.018510][ T5066] el0t_64_sync_handler+0xcc/0xe4 [ 76.019327][ T5066] el0t_64_sync+0x1a0/0x1a4 [ 76.020687][ T5066] ------------[ cut here ]------------ [ 76.021720][ T5066] WARNING: CPU: 0 PID: 5066 at fs/btrfs/inode.c:6776 btrfs_add_link+0x718/0xa9c [ 76.023247][ T5066] Modules linked in: [ 76.023860][ T5066] CPU: 0 PID: 5066 Comm: syz.0.19 Tainted: G W syzkaller #0 [ 76.025309][ T5066] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/18/2026 [ 76.027042][ T5066] pstate: 62400005 (nZCv daif +PAN -UAO +TCO -DIT -SSBS BTYPE=--) [ 76.028374][ T5066] pc : btrfs_add_link+0x718/0xa9c [ 76.029232][ T5066] lr : btrfs_add_link+0x718/0xa9c [ 76.030036][ T5066] sp : ffff8000204a7580 [ 76.030748][ T5066] x29: ffff8000204a7680 x28: ffff0000de9da580 x27: 0000000000000108 [ 76.032188][ T5066] x26: 00000000fffffff4 x25: 0000000000000000 x24: dfff800000000000 [ 76.033479][ T5066] x23: 0000000000000014 x22: 1fffe0001bd3b4bb x21: ffff700004094eb8 [ 76.034869][ T5066] x20: 00000000fffffff4 x19: ffff0000de9da5d8 x18: 0000000000000001 [ 76.036226][ T5066] x17: 0000000000000000 x16: ffff800008304c04 x15: 00000000ffffffff [ 76.037671][ T5066] x14: 0000000000000001 x13: 1ffff00004094dd0 x12: 0000000000ff0100 [ 76.039087][ T5066] x11: 0000000000000000 x10: 0000000000000000 x9 : e22205ac4bd4a300 [ 76.040548][ T5066] x8 : e22205ac4bd4a300 x7 : 0000000000000001 x6 : 0000000000000001 [ 76.041847][ T5066] x5 : ffff8000204a6e98 x4 : ffff80001437f3e0 x3 : ffff800008304d14 [ 76.043227][ T5066] x2 : 0000000000000001 x1 : 0000000100000000 x0 : 0000000000000026 [ 76.044716][ T5066] Call trace: [ 76.045256][ T5066] btrfs_add_link+0x718/0xa9c [ 76.046054][ T5066] btrfs_create+0x468/0x514 [ 76.046805][ T5066] path_openat+0xe18/0x2718 [ 76.047621][ T5066] do_filp_open+0x184/0x368 [ 76.048412][ T5066] do_sys_openat2+0x134/0x3f4 [ 76.049194][ T5066] __arm64_sys_openat+0x118/0x14c [ 76.050022][ T5066] invoke_syscall+0x98/0x2b0 [ 76.050830][ T5066] el0_svc_common+0x138/0x258 [ 76.051633][ T5066] do_el0_svc+0x58/0x13c [ 76.052350][ T5066] el0_svc+0x78/0x1d0 [ 76.053004][ T5066] el0t_64_sync_handler+0xcc/0xe4 [ 76.053883][ T5066] el0t_64_sync+0x1a0/0x1a4 [ 76.054642][ T5066] irq event stamp: 80586 [ 76.055328][ T5066] hardirqs last enabled at (80585): [] __up_console_sem+0xb4/0xfc [ 76.056857][ T5066] hardirqs last disabled at (80586): [] el1_dbg+0x24/0x80 [ 76.058336][ T5066] softirqs last enabled at (80566): [] handle_softirqs+0xa40/0xbe4 [ 76.059967][ T5066] softirqs last disabled at (80523): [] __irq_exit_rcu+0x240/0x43c [ 76.061581][ T5066] ---[ end trace 98df19d7dd1e49ad ]--- [ 76.062902][ T5066] BTRFS: error (device loop0) in btrfs_add_link:6776: errno=-12 Out of memory [ 76.064332][ T5066] BTRFS info (device loop0): forced readonly [ 76.246083][ T5088] loop0: detected capacity change from 0 to 32768 [ 76.287427][ T5088] BTRFS: device fsid ed167579-eb65-4e76-9a50-61ac97e9b59d devid 1 transid 8 /dev/loop0 scanned by syz.0.20 (5088) [ 76.290379][ T5088] BTRFS info (device loop0): using sha256 (sha256-ce) checksum algorithm [ 76.291696][ T5088] BTRFS info (device loop0): setting nodatacow, compression disabled [ 76.293006][ T5088] BTRFS info (device loop0): setting datacow [ 76.294015][ T5088] BTRFS info (device loop0): doing ref verification [ 76.295454][ T5088] BTRFS info (device loop0): force clearing of disk cache [ 76.296564][ T5088] BTRFS info (device loop0): turning off barriers [ 76.297769][ T5088] BTRFS info (device loop0): use zlib compression, level 3 [ 76.299043][ T5088] BTRFS info (device loop0): using free space tree [ 76.300175][ T5088] BTRFS info (device loop0): has skinny extents [ 76.309470][ T5088] BTRFS info (device loop0): clearing free space tree [ 76.310661][ T5088] BTRFS info (device loop0): clearing compat-ro feature flag for FREE_SPACE_TREE (0x1) [ 76.312390][ T5088] BTRFS info (device loop0): clearing compat-ro feature flag for FREE_SPACE_TREE_VALID (0x2) [ 76.316377][ T5088] BTRFS info (device loop0): creating free space tree [ 76.317662][ T5088] BTRFS info (device loop0): setting compat-ro feature flag for FREE_SPACE_TREE (0x1) [ 76.319255][ T5088] BTRFS info (device loop0): setting compat-ro feature flag for FREE_SPACE_TREE_VALID (0x2) [ 76.323502][ T5088] FAULT_INJECTION: forcing a failure. [ 76.323502][ T5088] name failslab, interval 1, probability 0, space 0, times 0 [ 76.327855][ T5088] CPU: 1 PID: 5088 Comm: syz.0.20 Tainted: G W syzkaller #0 [ 76.329272][ T5088] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/18/2026 [ 76.330908][ T5088] Call trace: [ 76.331463][ T5088] dump_backtrace+0x0/0x458 [ 76.332256][ T5088] show_stack+0x2c/0x3c [ 76.333038][ T5088] __dump_stack+0x30/0x40 [ 76.333829][ T5088] dump_stack_lvl+0xf4/0x15c [ 76.334628][ T5088] dump_stack+0x1c/0x5c [ 76.335361][ T5088] should_fail+0x3bc/0x514 [ 76.336168][ T5088] __should_failslab+0xbc/0x10c [ 76.336983][ T5088] should_failslab+0x10/0x28 [ 76.337708][ T5088] slab_pre_alloc_hook+0x64/0xe8 [ 76.338527][ T5088] kmem_cache_alloc+0x94/0x3d4 [ 76.339392][ T5088] btrfs_alloc_path+0x5c/0x68 [ 76.340199][ T5088] btrfs_insert_dir_item+0x184/0x3e8 [ 76.341074][ T5088] btrfs_add_link+0x2b0/0xa9c [ 76.341863][ T5088] btrfs_create+0x468/0x514 [ 76.342695][ T5088] path_openat+0xe18/0x2718 [ 76.343510][ T5088] do_filp_open+0x184/0x368 [ 76.344316][ T5088] do_sys_openat2+0x134/0x3f4 [ 76.345107][ T5088] __arm64_sys_openat+0x118/0x14c [ 76.345964][ T5088] invoke_syscall+0x98/0x2b0 [ 76.346774][ T5088] el0_svc_common+0x138/0x258 [ 76.347605][ T5088] do_el0_svc+0x58/0x13c [ 76.348332][ T5088] el0_svc+0x78/0x1d0 [ 76.348963][ T5088] el0t_64_sync_handler+0xcc/0xe4 [ 76.349832][ T5088] el0t_64_sync+0x1a0/0x1a4 [ 76.351821][ T5088] ------------[ cut here ]------------ [ 76.352815][ T5088] WARNING: CPU: 0 PID: 5088 at fs/btrfs/inode.c:6776 btrfs_add_link+0x718/0xa9c [ 76.354403][ T5088] Modules linked in: [ 76.355003][ T5088] CPU: 0 PID: 5088 Comm: syz.0.20 Tainted: G W syzkaller #0 [ 76.356623][ T5088] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/18/2026 [ 76.358227][ T5088] pstate: 62400005 (nZCv daif +PAN -UAO +TCO -DIT -SSBS BTYPE=--) [ 76.359530][ T5088] pc : btrfs_add_link+0x718/0xa9c [ 76.360422][ T5088] lr : btrfs_add_link+0x718/0xa9c [ 76.361377][ T5088] sp : ffff8000205a7580 [ 76.362119][ T5088] x29: ffff8000205a7680 x28: ffff0000de9dec60 x27: 0000000000000108 [ 76.363479][ T5088] x26: 00000000fffffff4 x25: 0000000000000000 x24: dfff800000000000 [ 76.364891][ T5088] x23: 0000000000000014 x22: 1fffe0001bd3bd97 x21: ffff7000040b4eb8 [ 76.366382][ T5088] x20: 00000000fffffff4 x19: ffff0000de9decb8 x18: 0000000000000001 [ 76.367854][ T5088] x17: 0000000000000000 x16: ffff80001125f77c x15: 00000000ffffffff [ 76.369190][ T5088] x14: 0000000000000001 x13: 1fffe000341f05ab x12: 0000000000ff0100 [ 76.370543][ T5088] x11: 0000000000000000 x10: 0000000000000000 x9 : e3d71e94411b2600 [ 76.371969][ T5088] x8 : e3d71e94411b2600 x7 : 0000000000000001 x6 : 0000000000000001 [ 76.373287][ T5088] x5 : ffff8000205a6e98 x4 : ffff80001437f3e0 x3 : ffff80000850932c [ 76.374678][ T5088] x2 : 0000000000000001 x1 : 0000000100000000 x0 : 0000000000000026 [ 76.375980][ T5088] Call trace: [ 76.376592][ T5088] btrfs_add_link+0x718/0xa9c [ 76.377377][ T5088] btrfs_create+0x468/0x514 [ 76.378088][ T5088] path_openat+0xe18/0x2718 [ 76.378859][ T5088] do_filp_open+0x184/0x368 [ 76.379620][ T5088] do_sys_openat2+0x134/0x3f4 [ 76.380458][ T5088] __arm64_sys_openat+0x118/0x14c [ 76.381284][ T5088] invoke_syscall+0x98/0x2b0 [ 76.382094][ T5088] el0_svc_common+0x138/0x258 [ 76.382878][ T5088] do_el0_svc+0x58/0x13c [ 76.383615][ T5088] el0_svc+0x78/0x1d0 [ 76.384271][ T5088] el0t_64_sync_handler+0xcc/0xe4 [ 76.385137][ T5088] el0t_64_sync+0x1a0/0x1a4 [ 76.385921][ T5088] irq event stamp: 80368 [ 76.386601][ T5088] hardirqs last enabled at (80367): [] __up_console_sem+0xb4/0xfc [ 76.388208][ T5088] hardirqs last disabled at (80368): [] el1_dbg+0x24/0x80 [ 76.389739][ T5088] softirqs last enabled at (80348): [] handle_softirqs+0xa40/0xbe4 [ 76.391408][ T5088] softirqs last disabled at (80329): [] __irq_exit_rcu+0x240/0x43c [ 76.392936][ T5088] ---[ end trace 98df19d7dd1e49ae ]--- [ 76.395260][ T5088] BTRFS: error (device loop0) in btrfs_add_link:6776: errno=-12 Out of memory [ 76.396538][ T5088] BTRFS info (device loop0): forced readonly [ 76.562929][ T5110] loop0: detected capacity change from 0 to 32768 [ 76.606091][ T5110] BTRFS: device fsid ed167579-eb65-4e76-9a50-61ac97e9b59d devid 1 transid 8 /dev/loop0 scanned by syz.0.21 (5110) [ 76.609876][ T5110] BTRFS info (device loop0): using sha256 (sha256-ce) checksum algorithm [ 76.611467][ T5110] BTRFS info (device loop0): setting nodatacow, compression disabled [ 76.613216][ T5110] BTRFS info (device loop0): setting datacow [ 76.614168][ T5110] BTRFS info (device loop0): doing ref verification [ 76.617592][ T5110] BTRFS info (device loop0): force clearing of disk cache [ 76.631681][ T5110] FAULT_INJECTION: forcing a failure. [ 76.631681][ T5110] name failslab, interval 1, probability 0, space 0, times 0 [ 76.634088][ T5110] CPU: 0 PID: 5110 Comm: syz.0.21 Tainted: G W syzkaller #0 [ 76.635578][ T5110] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/18/2026 [ 76.637403][ T5110] Call trace: [ 76.637968][ T5110] dump_backtrace+0x0/0x458 [ 76.638695][ T5110] show_stack+0x2c/0x3c [ 76.639406][ T5110] __dump_stack+0x30/0x40 [ 76.640128][ T5110] dump_stack_lvl+0xf4/0x15c [ 76.640897][ T5110] dump_stack+0x1c/0x5c [ 76.641619][ T5110] should_fail+0x3bc/0x514 [ 76.642417][ T5110] __should_failslab+0xbc/0x10c [ 76.643265][ T5110] should_failslab+0x10/0x28 [ 76.644076][ T5110] slab_pre_alloc_hook+0x64/0xe8 [ 76.644905][ T5110] kmem_cache_alloc+0x94/0x3d4 [ 76.645710][ T5110] btrfs_alloc_path+0x5c/0x68 [ 76.646502][ T5110] btrfs_insert_dir_item+0x184/0x3e8 [ 76.647434][ T5110] btrfs_add_link+0x2b0/0xa9c [ 76.648266][ T5110] btrfs_create+0x468/0x514 [ 76.649056][ T5110] path_openat+0xe18/0x2718 [ 76.649828][ T5110] do_filp_open+0x184/0x368 [ 76.650487][ T5110] do_sys_openat2+0x134/0x3f4 [ 76.651227][ T5110] __arm64_sys_openat+0x118/0x14c [ 76.652145][ T5110] invoke_syscall+0x98/0x2b0 [ 76.652878][ T5110] el0_svc_common+0x138/0x258 [ 76.653690][ T5110] do_el0_svc+0x58/0x13c [ 76.654446][ T5110] el0_svc+0x78/0x1d0 [ 76.655108][ T5110] el0t_64_sync_handler+0xcc/0xe4 [ 76.656018][ T5110] el0t_64_sync+0x1a0/0x1a4 [ 76.660171][ T5110] ------------[ cut here ]------------ [ 76.661097][ T5110] WARNING: CPU: 0 PID: 5110 at fs/btrfs/inode.c:6776 btrfs_add_link+0x718/0xa9c [ 76.662594][ T5110] Modules linked in: [ 76.663271][ T5110] CPU: 0 PID: 5110 Comm: syz.0.21 Tainted: G W syzkaller #0 [ 76.664667][ T5110] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/18/2026 [ 76.666358][ T5110] pstate: 62400005 (nZCv daif +PAN -UAO +TCO -DIT -SSBS BTYPE=--) [ 76.667729][ T5110] pc : btrfs_add_link+0x718/0xa9c [ 76.668656][ T5110] lr : btrfs_add_link+0x718/0xa9c [ 76.669540][ T5110] sp : ffff8000205b7580 [ 76.670245][ T5110] x29: ffff8000205b7680 x28: ffff0000de9da840 x27: 0000000000000108 [ 76.671628][ T5110] x26: 00000000fffffff4 x25: 0000000000000000 x24: dfff800000000000 [ 76.673111][ T5110] x23: 0000000000000014 x22: 1fffe0001bd3b513 x21: ffff7000040b6eb8 [ 76.674431][ T5110] x20: 00000000fffffff4 x19: ffff0000de9da898 x18: 0000000000000001 [ 76.675820][ T5110] x17: 0000000000000000 x16: ffff80001125f77c x15: 00000000ffffffff [ 76.677174][ T5110] x14: 0000000000000001 x13: 1fffe000341f05ab x12: 0000000000ff0100 [ 76.678567][ T5110] x11: 0000000000000000 x10: 0000000000000000 x9 : 1a6348013c9c9900 [ 76.680007][ T5110] x8 : 1a6348013c9c9900 x7 : 0000000000000001 x6 : 0000000000000001 [ 76.681321][ T5110] x5 : ffff8000205b6e98 x4 : ffff80001437f3e0 x3 : ffff80000850932c [ 76.682666][ T5110] x2 : 0000000000000001 x1 : 0000000100000000 x0 : 0000000000000026 [ 76.684019][ T5110] Call trace: [ 76.684618][ T5110] btrfs_add_link+0x718/0xa9c [ 76.685449][ T5110] btrfs_create+0x468/0x514 [ 76.686185][ T5110] path_openat+0xe18/0x2718 [ 76.686953][ T5110] do_filp_open+0x184/0x368 [ 76.687774][ T5110] do_sys_openat2+0x134/0x3f4 [ 76.688602][ T5110] __arm64_sys_openat+0x118/0x14c [ 76.689459][ T5110] invoke_syscall+0x98/0x2b0 [ 76.690274][ T5110] el0_svc_common+0x138/0x258 [ 76.691114][ T5110] do_el0_svc+0x58/0x13c [ 76.691893][ T5110] el0_svc+0x78/0x1d0 [ 76.692625][ T5110] el0t_64_sync_handler+0xcc/0xe4 [ 76.693471][ T5110] el0t_64_sync+0x1a0/0x1a4 [ 76.694291][ T5110] irq event stamp: 80298 [ 76.694963][ T5110] hardirqs last enabled at (80297): [] __up_console_sem+0xb4/0xfc [ 76.696524][ T5110] hardirqs last disabled at (80298): [] el1_dbg+0x24/0x80 [ 76.697959][ T5110] softirqs last enabled at (80278): [] handle_softirqs+0xa40/0xbe4 [ 76.699592][ T5110] softirqs last disabled at (80201): [] __irq_exit_rcu+0x240/0x43c [ 76.701149][ T5110] ---[ end trace 98df19d7dd1e49af ]--- [ 76.704227][ T5110] BTRFS: error (device loop0) in btrfs_add_link:6776: errno=-12 Out of memory [ 76.779372][ T148] device hsr_slave_0 left promiscuous mode [ 76.815556][ T148] device hsr_slave_1 left promiscuous mode [ 76.874002][ T5132] loop0: detected capacity change from 0 to 32768 [ 76.894775][ T148] batman_adv: batadv0: Interface deactivated: batadv_slave_0 [ 76.896076][ T148] batman_adv: batadv0: Removing interface: batadv_slave_0 [ 76.897642][ T148] batman_adv: batadv0: Interface deactivated: batadv_slave_1 [ 76.898831][ T148] batman_adv: batadv0: Removing interface: batadv_slave_1 [ 76.900331][ T148] device bridge_slave_1 left promiscuous mode [ 76.901474][ T148] bridge0: port 2(bridge_slave_1) entered disabled state [ 76.920115][ T5132] BTRFS: device fsid ed167579-eb65-4e76-9a50-61ac97e9b59d devid 1 transid 8 /dev/loop0 scanned by syz.0.22 (5132) [ 76.935305][ T148] device bridge_slave_0 left promiscuous mode [ 76.936318][ T148] bridge0: port 1(bridge_slave_0) entered disabled state [ 76.949701][ T5132] FAULT_INJECTION: forcing a failure. [ 76.949701][ T5132] name failslab, interval 1, probability 0, space 0, times 0 [ 76.951777][ T5132] CPU: 0 PID: 5132 Comm: syz.0.22 Tainted: G W syzkaller #0 [ 76.953276][ T5132] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/18/2026 [ 76.955085][ T5132] Call trace: [ 76.955676][ T5132] dump_backtrace+0x0/0x458 [ 76.956431][ T5132] show_stack+0x2c/0x3c [ 76.957196][ T5132] __dump_stack+0x30/0x40 [ 76.957981][ T5132] dump_stack_lvl+0xf4/0x15c [ 76.958719][ T5132] dump_stack+0x1c/0x5c [ 76.959422][ T5132] should_fail+0x3bc/0x514 [ 76.960255][ T5132] __should_failslab+0xbc/0x10c [ 76.961087][ T5132] should_failslab+0x10/0x28 [ 76.961932][ T5132] slab_pre_alloc_hook+0x64/0xe8 [ 76.962804][ T5132] kmem_cache_alloc+0x94/0x3d4 [ 76.963605][ T5132] btrfs_get_or_create_delayed_node+0x114/0x4a8 [ 76.964668][ T5132] btrfs_delayed_update_inode+0x3c/0x1b68 [ 76.965639][ T5132] btrfs_update_inode+0x210/0x3d4 [ 76.966502][ T5132] btrfs_create+0x364/0x514 [ 76.967306][ T5132] path_openat+0xe18/0x2718 [ 76.968155][ T5132] do_filp_open+0x184/0x368 [ 76.968938][ T5132] do_sys_openat2+0x134/0x3f4 [ 76.969773][ T5132] __arm64_sys_openat+0x118/0x14c [ 76.970691][ T5132] invoke_syscall+0x98/0x2b0 [ 76.971427][ T5132] el0_svc_common+0x138/0x258 [ 76.972278][ T5132] do_el0_svc+0x58/0x13c [ 76.973052][ T5132] el0_svc+0x78/0x1d0 [ 76.973754][ T5132] el0t_64_sync_handler+0xcc/0xe4 [ 76.974669][ T5132] el0t_64_sync+0x1a0/0x1a4 [ 77.094882][ T148] device veth1_macvtap left promiscuous mode [ 77.095935][ T148] device veth0_macvtap left promiscuous mode [ 77.097093][ T148] device veth1_vlan left promiscuous mode [ 77.098583][ T148] device veth0_vlan left promiscuous mode [ 77.140434][ T5154] loop0: detected capacity change from 0 to 32768 [ 77.148917][ T5154] BTRFS: device fsid ed167579-eb65-4e76-9a50-61ac97e9b59d devid 1 transid 8 /dev/loop0 scanned by syz.0.23 (5154) [ 77.202362][ T5154] FAULT_INJECTION: forcing a failure. [ 77.202362][ T5154] name failslab, interval 1, probability 0, space 0, times 0 [ 77.204559][ T5154] CPU: 0 PID: 5154 Comm: syz.0.23 Tainted: G W syzkaller #0 [ 77.205953][ T5154] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/18/2026 [ 77.207738][ T5154] Call trace: [ 77.208352][ T5154] dump_backtrace+0x0/0x458 [ 77.209098][ T5154] show_stack+0x2c/0x3c [ 77.209839][ T5154] __dump_stack+0x30/0x40 [ 77.210642][ T5154] dump_stack_lvl+0xf4/0x15c [ 77.211406][ T5154] dump_stack+0x1c/0x5c [ 77.212132][ T5154] should_fail+0x3bc/0x514 [ 77.212911][ T5154] __should_failslab+0xbc/0x10c [ 77.213716][ T5154] should_failslab+0x10/0x28 [ 77.214499][ T5154] slab_pre_alloc_hook+0x64/0xe8 [ 77.215346][ T5154] kmem_cache_alloc+0x94/0x3d4 [ 77.216153][ T5154] btrfs_alloc_path+0x5c/0x68 [ 77.216961][ T5154] btrfs_insert_dir_item+0x184/0x3e8 [ 77.217875][ T5154] btrfs_add_link+0x2b0/0xa9c [ 77.218694][ T5154] btrfs_create+0x468/0x514 [ 77.219411][ T5154] path_openat+0xe18/0x2718 [ 77.220103][ T5154] do_filp_open+0x184/0x368 [ 77.220874][ T5154] do_sys_openat2+0x134/0x3f4 [ 77.221670][ T5154] __arm64_sys_openat+0x118/0x14c [ 77.222540][ T5154] invoke_syscall+0x98/0x2b0 [ 77.223271][ T5154] el0_svc_common+0x138/0x258 [ 77.224055][ T5154] do_el0_svc+0x58/0x13c [ 77.224766][ T5154] el0_svc+0x78/0x1d0 [ 77.225475][ T5154] el0t_64_sync_handler+0xcc/0xe4 [ 77.226326][ T5154] el0t_64_sync+0x1a0/0x1a4 [ 77.229430][ T5154] ------------[ cut here ]------------ [ 77.230455][ T5154] WARNING: CPU: 0 PID: 5154 at fs/btrfs/inode.c:6776 btrfs_add_link+0x718/0xa9c [ 77.232016][ T5154] Modules linked in: [ 77.232674][ T5154] CPU: 0 PID: 5154 Comm: syz.0.23 Tainted: G W syzkaller #0 [ 77.234137][ T5154] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/18/2026 [ 77.235414][ T4165] Bluetooth: hci1: command 0x0419 tx timeout [ 77.235865][ T5154] pstate: 62400005 (nZCv daif +PAN -UAO +TCO -DIT -SSBS BTYPE=--) [ 77.238167][ T5154] pc : btrfs_add_link+0x718/0xa9c [ 77.239040][ T5154] lr : btrfs_add_link+0x718/0xa9c [ 77.239933][ T5154] sp : ffff800020817580 [ 77.240700][ T5154] x29: ffff800020817680 x28: ffff0000dd2e90b0 x27: 0000000000000108 [ 77.242143][ T5154] x26: 00000000fffffff4 x25: 0000000000000000 x24: dfff800000000000 [ 77.243515][ T5154] x23: 0000000000000014 x22: 1fffe0001ba5d221 x21: ffff700004102eb8 [ 77.244920][ T5154] x20: 00000000fffffff4 x19: ffff0000dd2e9108 x18: 0000000000000001 [ 77.246275][ T5154] x17: 0000000000000000 x16: ffff800008304c04 x15: 00000000ffffffff [ 77.247640][ T5154] x14: 0000000000000001 x13: 1ffff00004102dd0 x12: 0000000000ff0100 [ 77.249045][ T5154] x11: 0000000000000000 x10: 0000000000000000 x9 : 09078c5fee9f3500 [ 77.250328][ T5154] x8 : 09078c5fee9f3500 x7 : 0000000000000001 x6 : 0000000000000001 [ 77.251637][ T5154] x5 : ffff800020816e98 x4 : ffff80001437f3e0 x3 : ffff800008304d14 [ 77.252975][ T5154] x2 : 0000000000000001 x1 : 0000000100000000 x0 : 0000000000000026 [ 77.254348][ T5154] Call trace: [ 77.254930][ T5154] btrfs_add_link+0x718/0xa9c [ 77.255804][ T5154] btrfs_create+0x468/0x514 [ 77.256636][ T5154] path_openat+0xe18/0x2718 [ 77.257453][ T5154] do_filp_open+0x184/0x368 [ 77.258215][ T5154] do_sys_openat2+0x134/0x3f4 [ 77.258985][ T5154] __arm64_sys_openat+0x118/0x14c [ 77.259893][ T5154] invoke_syscall+0x98/0x2b0 [ 77.260707][ T5154] el0_svc_common+0x138/0x258 [ 77.261487][ T5154] do_el0_svc+0x58/0x13c [ 77.262209][ T5154] el0_svc+0x78/0x1d0 [ 77.262961][ T5154] el0t_64_sync_handler+0xcc/0xe4 [ 77.263881][ T5154] el0t_64_sync+0x1a0/0x1a4 [ 77.264653][ T5154] irq event stamp: 80258 [ 77.265370][ T5154] hardirqs last enabled at (80257): [] __up_console_sem+0xb4/0xfc [ 77.266945][ T5154] hardirqs last disabled at (80258): [] el1_dbg+0x24/0x80 [ 77.268429][ T5154] softirqs last enabled at (80238): [] handle_softirqs+0xa40/0xbe4 [ 77.270146][ T5154] softirqs last disabled at (80157): [] __irq_exit_rcu+0x240/0x43c [ 77.271780][ T5154] ---[ end trace 98df19d7dd1e49b0 ]--- [ 77.273592][ T5154] BTRFS: error (device loop0) in btrfs_add_link:6776: errno=-12 Out of memory [ 77.338379][ T148] team0 (unregistering): Port device team_slave_1 removed [ 77.343428][ T148] team0 (unregistering): Port device team_slave_0 removed [ 77.367024][ T148] bond0 (unregistering): (slave bond_slave_1): Releasing backup interface [ 77.415169][ T5176] loop0: detected capacity change from 0 to 32768 [ 77.419433][ T148] bond0 (unregistering): (slave bond_slave_0): Releasing backup interface [ 77.519482][ T5176] BTRFS: device fsid ed167579-eb65-4e76-9a50-61ac97e9b59d devid 1 transid 8 /dev/loop0 scanned by syz.0.24 (5176) [ 77.528485][ T148] bond0 (unregistering): Released all slaves [ 77.548670][ T5176] FAULT_INJECTION: forcing a failure. [ 77.548670][ T5176] name failslab, interval 1, probability 0, space 0, times 0 [ 77.550893][ T5176] CPU: 1 PID: 5176 Comm: syz.0.24 Tainted: G W syzkaller #0 [ 77.552408][ T5176] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/18/2026 [ 77.554088][ T5176] Call trace: [ 77.554652][ T5176] dump_backtrace+0x0/0x458 [ 77.555420][ T5176] show_stack+0x2c/0x3c [ 77.556161][ T5176] __dump_stack+0x30/0x40 [ 77.556942][ T5176] dump_stack_lvl+0xf4/0x15c [ 77.557711][ T5176] dump_stack+0x1c/0x5c [ 77.558410][ T5176] should_fail+0x3bc/0x514 [ 77.559120][ T5176] __should_failslab+0xbc/0x10c [ 77.559983][ T5176] should_failslab+0x10/0x28 [ 77.560743][ T5176] slab_pre_alloc_hook+0x64/0xe8 [ 77.561584][ T5176] kmem_cache_alloc+0x94/0x3d4 [ 77.562411][ T5176] btrfs_alloc_path+0x5c/0x68 [ 77.563253][ T5176] btrfs_insert_dir_item+0x184/0x3e8 [ 77.564165][ T5176] btrfs_add_link+0x2b0/0xa9c [ 77.564948][ T5176] btrfs_create+0x468/0x514 [ 77.565712][ T5176] path_openat+0xe18/0x2718 [ 77.566501][ T5176] do_filp_open+0x184/0x368 [ 77.567297][ T5176] do_sys_openat2+0x134/0x3f4 [ 77.568111][ T5176] __arm64_sys_openat+0x118/0x14c [ 77.568972][ T5176] invoke_syscall+0x98/0x2b0 [ 77.569814][ T5176] el0_svc_common+0x138/0x258 [ 77.570630][ T5176] do_el0_svc+0x58/0x13c [ 77.571332][ T5176] el0_svc+0x78/0x1d0 [ 77.572045][ T5176] el0t_64_sync_handler+0xcc/0xe4 [ 77.572883][ T5176] el0t_64_sync+0x1a0/0x1a4 [ 77.574159][ T5176] ------------[ cut here ]------------ [ 77.575511][ T5176] WARNING: CPU: 1 PID: 5176 at fs/btrfs/inode.c:6776 btrfs_add_link+0x718/0xa9c [ 77.576980][ T5176] Modules linked in: [ 77.577646][ T5176] CPU: 1 PID: 5176 Comm: syz.0.24 Tainted: G W syzkaller #0 [ 77.578985][ T5176] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/18/2026 [ 77.580557][ T5176] pstate: 62400005 (nZCv daif +PAN -UAO +TCO -DIT -SSBS BTYPE=--) [ 77.581752][ T5176] pc : btrfs_add_link+0x718/0xa9c [ 77.582473][ T5176] lr : btrfs_add_link+0x718/0xa9c [ 77.583289][ T5176] sp : ffff800020927580 [ 77.583974][ T5176] x29: ffff800020927680 x28: ffff0000de9def20 x27: 0000000000000108 [ 77.585324][ T5176] x26: 00000000fffffff4 x25: 0000000000000000 x24: dfff800000000000 [ 77.586692][ T5176] x23: 0000000000000014 x22: 1fffe0001bd3bdef x21: ffff700004124eb8 [ 77.588026][ T5176] x20: 00000000fffffff4 x19: ffff0000de9def78 x18: 0000000000000001 [ 77.589376][ T5176] x17: 0000000000000000 x16: ffff80001125f77c x15: 00000000ffffffff [ 77.590765][ T5176] x14: 0000000000000001 x13: 1fffe000341f47ab x12: 0000000000ff0100 [ 77.592109][ T5176] x11: 0000000000000000 x10: 0000000000000000 x9 : 449ded76cd5b2100 [ 77.593478][ T5176] x8 : 449ded76cd5b2100 x7 : 0000000000000001 x6 : 0000000000000001 [ 77.594802][ T5176] x5 : ffff800020926e98 x4 : ffff80001437f3e0 x3 : ffff80000850932c [ 77.596227][ T5176] x2 : 0000000000000001 x1 : 0000000100000000 x0 : 0000000000000026 [ 77.597532][ T5176] Call trace: [ 77.598073][ T5176] btrfs_add_link+0x718/0xa9c [ 77.598842][ T5176] btrfs_create+0x468/0x514 [ 77.599543][ T5176] path_openat+0xe18/0x2718 [ 77.600254][ T5176] do_filp_open+0x184/0x368 [ 77.600932][ T5176] do_sys_openat2+0x134/0x3f4 [ 77.601617][ T5176] __arm64_sys_openat+0x118/0x14c [ 77.602410][ T5176] invoke_syscall+0x98/0x2b0 [ 77.603162][ T5176] el0_svc_common+0x138/0x258 [ 77.603940][ T5176] do_el0_svc+0x58/0x13c [ 77.604635][ T5176] el0_svc+0x78/0x1d0 [ 77.605276][ T5176] el0t_64_sync_handler+0xcc/0xe4 [ 77.606079][ T5176] el0t_64_sync+0x1a0/0x1a4 [ 77.606774][ T5176] irq event stamp: 82198 [ 77.607443][ T5176] hardirqs last enabled at (82197): [] __up_console_sem+0xb4/0xfc [ 77.609045][ T5176] hardirqs last disabled at (82198): [] el1_dbg+0x24/0x80 [ 77.610493][ T5176] softirqs last enabled at (82186): [] handle_softirqs+0xa40/0xbe4 [ 77.612111][ T5176] softirqs last disabled at (82179): [] __irq_exit_rcu+0x240/0x43c [ 77.613729][ T5176] ---[ end trace 98df19d7dd1e49b1 ]--- [ 77.616429][ T5176] BTRFS: error (device loop0) in btrfs_add_link:6776: errno=-12 Out of memory [ 77.857092][ T5198] BTRFS: device fsid ed167579-eb65-4e76-9a50-61ac97e9b59d devid 1 transid 8 /dev/loop0 scanned by syz.0.25 (5198) [ 77.873913][ T5198] FAULT_INJECTION: forcing a failure. [ 77.873913][ T5198] name fail_page_alloc, interval 1, probability 0, space 0, times 1 [ 77.876303][ T5198] CPU: 0 PID: 5198 Comm: syz.0.25 Tainted: G W syzkaller #0 [ 77.877741][ T5198] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/18/2026 [ 77.879443][ T5198] Call trace: [ 77.880031][ T5198] dump_backtrace+0x0/0x458 [ 77.880804][ T5198] show_stack+0x2c/0x3c [ 77.881490][ T5198] __dump_stack+0x30/0x40 [ 77.882172][ T5198] dump_stack_lvl+0xf4/0x15c [ 77.882995][ T5198] dump_stack+0x1c/0x5c [ 77.883686][ T5198] should_fail+0x3bc/0x514 [ 77.884412][ T5198] should_fail_alloc_page+0x74/0xa8 [ 77.885366][ T5198] prepare_alloc_pages+0x160/0x45c [ 77.886246][ T5198] __alloc_pages+0x108/0x470 [ 77.887088][ T5198] alloc_pages+0x34c/0x5c0 [ 77.887868][ T5198] new_slab+0xe0/0x544 [ 77.888535][ T5198] ___slab_alloc+0x6b4/0xd8c [ 77.889299][ T5198] __slab_alloc+0x68/0xc0 [ 77.890025][ T5198] kmem_cache_alloc+0x2a4/0x3d4 [ 77.890938][ T5198] btrfs_get_or_create_delayed_node+0x114/0x4a8 [ 77.892054][ T5198] btrfs_delayed_update_inode+0x3c/0x1b68 [ 77.893107][ T5198] btrfs_update_inode+0x210/0x3d4 [ 77.893996][ T5198] btrfs_create+0x364/0x514 [ 77.894795][ T5198] path_openat+0xe18/0x2718 [ 77.895594][ T5198] do_filp_open+0x184/0x368 [ 77.896334][ T5198] do_sys_openat2+0x134/0x3f4 [ 77.897139][ T5198] __arm64_sys_openat+0x118/0x14c [ 77.898082][ T5198] invoke_syscall+0x98/0x2b0 [ 77.898904][ T5198] el0_svc_common+0x138/0x258 [ 77.899759][ T5198] do_el0_svc+0x58/0x13c [ 77.900488][ T5198] el0_svc+0x78/0x1d0 [ 77.901173][ T5198] el0t_64_sync_handler+0xcc/0xe4 [ 77.902047][ T5198] el0t_64_sync+0x1a0/0x1a4 [ 78.049050][ T5220] BTRFS: device fsid ed167579-eb65-4e76-9a50-61ac97e9b59d devid 1 transid 8 /dev/loop0 scanned by syz.0.26 (5220) [ 78.070445][ T5220] FAULT_INJECTION: forcing a failure. [ 78.070445][ T5220] name failslab, interval 1, probability 0, space 0, times 0 [ 78.072439][ T5220] CPU: 0 PID: 5220 Comm: syz.0.26 Tainted: G W syzkaller #0 [ 78.073833][ T5220] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/18/2026 [ 78.075504][ T5220] Call trace: [ 78.076047][ T5220] dump_backtrace+0x0/0x458 [ 78.076832][ T5220] show_stack+0x2c/0x3c [ 78.077571][ T5220] __dump_stack+0x30/0x40 [ 78.078243][ T5220] dump_stack_lvl+0xf4/0x15c [ 78.079035][ T5220] dump_stack+0x1c/0x5c [ 78.079805][ T5220] should_fail+0x3bc/0x514 [ 78.080525][ T5220] __should_failslab+0xbc/0x10c [ 78.081335][ T5220] should_failslab+0x10/0x28 [ 78.082090][ T5220] slab_pre_alloc_hook+0x64/0xe8 [ 78.082913][ T5220] kmem_cache_alloc+0x94/0x3d4 [ 78.083711][ T5220] security_inode_alloc+0x38/0x11c [ 78.084616][ T5220] inode_init_always+0x670/0xa84 [ 78.085413][ T5220] new_inode_pseudo+0x7c/0x1fc [ 78.086230][ T5220] new_inode+0x38/0x174 [ 78.086936][ T5220] btrfs_new_inode+0x158/0x1564 [ 78.087821][ T5220] btrfs_create+0x24c/0x514 [ 78.088619][ T5220] path_openat+0xe18/0x2718 [ 78.089295][ T5220] do_filp_open+0x184/0x368 [ 78.090047][ T5220] do_sys_openat2+0x134/0x3f4 [ 78.090815][ T5220] __arm64_sys_openat+0x118/0x14c [ 78.091594][ T5220] invoke_syscall+0x98/0x2b0 [ 78.092397][ T5220] el0_svc_common+0x138/0x258 [ 78.093107][ T5220] do_el0_svc+0x58/0x13c [ 78.093824][ T5220] el0_svc+0x78/0x1d0 [ 78.094483][ T5220] el0t_64_sync_handler+0xcc/0xe4 [ 78.095382][ T5220] el0t_64_sync+0x1a0/0x1a4 [ 78.236407][ T5242] BTRFS: device fsid ed167579-eb65-4e76-9a50-61ac97e9b59d devid 1 transid 8 /dev/loop0 scanned by syz.0.27 (5242) [ 78.260478][ T5242] FAULT_INJECTION: forcing a failure. [ 78.260478][ T5242] name failslab, interval 1, probability 0, space 0, times 0 [ 78.262549][ T5242] CPU: 1 PID: 5242 Comm: syz.0.27 Tainted: G W syzkaller #0 [ 78.264135][ T5242] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/18/2026 [ 78.265809][ T5242] Call trace: [ 78.266447][ T5242] dump_backtrace+0x0/0x458 [ 78.267278][ T5242] show_stack+0x2c/0x3c [ 78.268036][ T5242] __dump_stack+0x30/0x40 [ 78.268836][ T5242] dump_stack_lvl+0xf4/0x15c [ 78.269663][ T5242] dump_stack+0x1c/0x5c [ 78.270379][ T5242] should_fail+0x3bc/0x514 [ 78.271099][ T5242] __should_failslab+0xbc/0x10c [ 78.271922][ T5242] should_failslab+0x10/0x28 [ 78.272712][ T5242] slab_pre_alloc_hook+0x64/0xe8 [ 78.273620][ T5242] kmem_cache_alloc+0x94/0x3d4 [ 78.274452][ T5242] btrfs_alloc_path+0x5c/0x68 [ 78.275269][ T5242] btrfs_insert_dir_item+0x184/0x3e8 [ 78.276265][ T5242] btrfs_add_link+0x2b0/0xa9c [ 78.277058][ T5242] btrfs_create+0x468/0x514 [ 78.277851][ T5242] path_openat+0xe18/0x2718 [ 78.278610][ T5242] do_filp_open+0x184/0x368 [ 78.279400][ T5242] do_sys_openat2+0x134/0x3f4 [ 78.280253][ T5242] __arm64_sys_openat+0x118/0x14c [ 78.281166][ T5242] invoke_syscall+0x98/0x2b0 [ 78.282022][ T5242] el0_svc_common+0x138/0x258 [ 78.282830][ T5242] do_el0_svc+0x58/0x13c [ 78.283552][ T5242] el0_svc+0x78/0x1d0 [ 78.284211][ T5242] el0t_64_sync_handler+0xcc/0xe4 [ 78.285072][ T5242] el0t_64_sync+0x1a0/0x1a4 [ 78.287801][ T5242] ------------[ cut here ]------------ [ 78.288817][ T5242] WARNING: CPU: 1 PID: 5242 at fs/btrfs/inode.c:6776 btrfs_add_link+0x718/0xa9c [ 78.290185][ T5242] Modules linked in: [ 78.290790][ T5242] CPU: 1 PID: 5242 Comm: syz.0.27 Tainted: G W syzkaller #0 [ 78.292175][ T5242] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/18/2026 [ 78.293904][ T5242] pstate: 62400005 (nZCv daif +PAN -UAO +TCO -DIT -SSBS BTYPE=--) [ 78.295189][ T5242] pc : btrfs_add_link+0x718/0xa9c [ 78.296042][ T5242] lr : btrfs_add_link+0x718/0xa9c [ 78.296964][ T5242] sp : ffff800020eb7580 [ 78.297688][ T5242] x29: ffff800020eb7680 x28: ffff0000de9de000 x27: 0000000000000108 [ 78.299051][ T5242] x26: 00000000fffffff4 x25: 0000000000000000 x24: dfff800000000000 [ 78.300478][ T5242] x23: 0000000000000014 x22: 1fffe0001bd3bc0b x21: ffff7000041d6eb8 [ 78.301943][ T5242] x20: 00000000fffffff4 x19: ffff0000de9de058 x18: 0000000000000001 [ 78.303332][ T5242] x17: 0000000000000000 x16: ffff80001125f77c x15: 00000000ffffffff [ 78.304658][ T5242] x14: 0000000000000001 x13: 1fffe000341f47ab x12: 0000000000ff0100 [ 78.306059][ T5242] x11: 0000000000000000 x10: 0000000000000000 x9 : 533f1ebb68318800 [ 78.307397][ T5242] x8 : 533f1ebb68318800 x7 : 0000000000000001 x6 : 0000000000000001 [ 78.308747][ T5242] x5 : ffff800020eb6e98 x4 : ffff80001437f3e0 x3 : ffff80000850932c [ 78.310140][ T5242] x2 : 0000000000000001 x1 : 0000000100000000 x0 : 0000000000000026 [ 78.311528][ T5242] Call trace: [ 78.312064][ T5242] btrfs_add_link+0x718/0xa9c [ 78.312879][ T5242] btrfs_create+0x468/0x514 [ 78.313595][ T5242] path_openat+0xe18/0x2718 [ 78.314375][ T5242] do_filp_open+0x184/0x368 [ 78.315108][ T5242] do_sys_openat2+0x134/0x3f4 [ 78.315890][ T5242] __arm64_sys_openat+0x118/0x14c [ 78.316753][ T5242] invoke_syscall+0x98/0x2b0 [ 78.317582][ T5242] el0_svc_common+0x138/0x258 [ 78.318484][ T5242] do_el0_svc+0x58/0x13c [ 78.319221][ T5242] el0_svc+0x78/0x1d0 [ 78.319887][ T5242] el0t_64_sync_handler+0xcc/0xe4 [ 78.320758][ T5242] el0t_64_sync+0x1a0/0x1a4 [ 78.321459][ T5242] irq event stamp: 79718 [ 78.322138][ T5242] hardirqs last enabled at (79717): [] __up_console_sem+0xb4/0xfc [ 78.323812][ T5242] hardirqs last disabled at (79718): [] el1_dbg+0x24/0x80 [ 78.325359][ T5242] softirqs last enabled at (79698): [] handle_softirqs+0xa40/0xbe4 [ 78.327038][ T5242] softirqs last disabled at (79675): [] __irq_exit_rcu+0x240/0x43c [ 78.328670][ T5242] ---[ end trace 98df19d7dd1e49b2 ]--- [ 78.330755][ T5242] BTRFS: error (device loop0) in btrfs_add_link:6776: errno=-12 Out of memory [ 78.588561][ T5263] BTRFS: device fsid ed167579-eb65-4e76-9a50-61ac97e9b59d devid 1 transid 8 /dev/loop0 scanned by syz.0.28 (5263) [ 78.609447][ T5263] FAULT_INJECTION: forcing a failure. [ 78.609447][ T5263] name failslab, interval 1, probability 0, space 0, times 0 [ 78.611497][ T5263] CPU: 0 PID: 5263 Comm: syz.0.28 Tainted: G W syzkaller #0 [ 78.612903][ T5263] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/18/2026 [ 78.614502][ T5263] Call trace: [ 78.615005][ T5263] dump_backtrace+0x0/0x458 [ 78.615785][ T5263] show_stack+0x2c/0x3c [ 78.616502][ T5263] __dump_stack+0x30/0x40 [ 78.617227][ T5263] dump_stack_lvl+0xf4/0x15c [ 78.617985][ T5263] dump_stack+0x1c/0x5c [ 78.618666][ T5263] should_fail+0x3bc/0x514 [ 78.619429][ T5263] __should_failslab+0xbc/0x10c [ 78.620261][ T5263] should_failslab+0x10/0x28 [ 78.621022][ T5263] slab_pre_alloc_hook+0x64/0xe8 [ 78.621850][ T5263] kmem_cache_alloc+0x94/0x3d4 [ 78.622568][ T5263] security_inode_alloc+0x38/0x11c [ 78.623423][ T5263] inode_init_always+0x670/0xa84 [ 78.624171][ T5263] new_inode_pseudo+0x7c/0x1fc [ 78.625048][ T5263] new_inode+0x38/0x174 [ 78.625810][ T5263] btrfs_new_inode+0x158/0x1564 [ 78.626610][ T5263] btrfs_create+0x24c/0x514 [ 78.627392][ T5263] path_openat+0xe18/0x2718 [ 78.628163][ T5263] do_filp_open+0x184/0x368 [ 78.629070][ T5263] do_sys_openat2+0x134/0x3f4 [ 78.629869][ T5263] __arm64_sys_openat+0x118/0x14c [ 78.630763][ T5263] invoke_syscall+0x98/0x2b0 [ 78.631506][ T5263] el0_svc_common+0x138/0x258 [ 78.632229][ T5263] do_el0_svc+0x58/0x13c [ 78.632888][ T5263] el0_svc+0x78/0x1d0 [ 78.633529][ T5263] el0t_64_sync_handler+0xcc/0xe4 [ 78.634327][ T5263] el0t_64_sync+0x1a0/0x1a4 [ 78.690017][ T4955] BTRFS: device fsid ed167579-eb65-4e76-9a50-61ac97e9b59d devid 1 transid 12 /dev/loop0 scanned by udevd (4955) [ 78.840011][ T5284] FAULT_INJECTION: forcing a failure. [ 78.840011][ T5284] name failslab, interval 1, probability 0, space 0, times 0 [ 78.842171][ T5284] CPU: 0 PID: 5284 Comm: syz.0.29 Tainted: G W syzkaller #0 [ 78.843606][ T5284] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/18/2026 [ 78.845324][ T5284] Call trace: [ 78.845955][ T5284] dump_backtrace+0x0/0x458 [ 78.846681][ T5284] show_stack+0x2c/0x3c [ 78.847333][ T5284] __dump_stack+0x30/0x40 [ 78.848105][ T5284] dump_stack_lvl+0xf4/0x15c [ 78.848912][ T5284] dump_stack+0x1c/0x5c [ 78.849604][ T5284] should_fail+0x3bc/0x514 [ 78.850299][ T5284] __should_failslab+0xbc/0x10c [ 78.851135][ T5284] should_failslab+0x10/0x28 [ 78.851942][ T5284] slab_pre_alloc_hook+0x64/0xe8 [ 78.852868][ T5284] kmem_cache_alloc+0x94/0x3d4 [ 78.853628][ T5284] btrfs_get_or_create_delayed_node+0x114/0x4a8 [ 78.854624][ T5284] btrfs_delayed_update_inode+0x3c/0x1b68 [ 78.855579][ T5284] btrfs_update_inode+0x210/0x3d4 [ 78.856464][ T5284] btrfs_create+0x364/0x514 [ 78.857191][ T5284] path_openat+0xe18/0x2718 [ 78.857895][ T5284] do_filp_open+0x184/0x368 [ 78.858629][ T5284] do_sys_openat2+0x134/0x3f4 [ 78.859404][ T5284] __arm64_sys_openat+0x118/0x14c [ 78.860245][ T5284] invoke_syscall+0x98/0x2b0 [ 78.860988][ T5284] el0_svc_common+0x138/0x258 [ 78.861750][ T5284] do_el0_svc+0x58/0x13c [ 78.862499][ T5284] el0_svc+0x78/0x1d0 [ 78.863136][ T5284] el0t_64_sync_handler+0xcc/0xe4 [ 78.863999][ T5284] el0t_64_sync+0x1a0/0x1a4 [ 79.056420][ T5306] BTRFS: device fsid ed167579-eb65-4e76-9a50-61ac97e9b59d devid 1 transid 8 /dev/loop0 scanned by syz.0.30 (5306) [ 79.109846][ T5306] FAULT_INJECTION: forcing a failure. [ 79.109846][ T5306] name failslab, interval 1, probability 0, space 0, times 0 [ 79.111946][ T5306] CPU: 1 PID: 5306 Comm: syz.0.30 Tainted: G W syzkaller #0 [ 79.113434][ T5306] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/18/2026 [ 79.115197][ T5306] Call trace: [ 79.115734][ T5306] dump_backtrace+0x0/0x458 [ 79.116490][ T5306] show_stack+0x2c/0x3c [ 79.117232][ T5306] __dump_stack+0x30/0x40 [ 79.117969][ T5306] dump_stack_lvl+0xf4/0x15c [ 79.118787][ T5306] dump_stack+0x1c/0x5c [ 79.119460][ T5306] should_fail+0x3bc/0x514 [ 79.120157][ T5306] __should_failslab+0xbc/0x10c [ 79.120991][ T5306] should_failslab+0x10/0x28 [ 79.121801][ T5306] slab_pre_alloc_hook+0x64/0xe8 [ 79.122662][ T5306] kmem_cache_alloc+0x94/0x3d4 [ 79.123478][ T5306] btrfs_alloc_path+0x5c/0x68 [ 79.124298][ T5306] btrfs_insert_dir_item+0x184/0x3e8 [ 79.125177][ T5306] btrfs_add_link+0x2b0/0xa9c [ 79.126016][ T5306] btrfs_create+0x468/0x514 [ 79.126797][ T5306] path_openat+0xe18/0x2718 [ 79.127611][ T5306] do_filp_open+0x184/0x368 [ 79.128388][ T5306] do_sys_openat2+0x134/0x3f4 [ 79.129202][ T5306] __arm64_sys_openat+0x118/0x14c [ 79.130100][ T5306] invoke_syscall+0x98/0x2b0 [ 79.130902][ T5306] el0_svc_common+0x138/0x258 [ 79.131707][ T5306] do_el0_svc+0x58/0x13c [ 79.132458][ T5306] el0_svc+0x78/0x1d0 [ 79.133150][ T5306] el0t_64_sync_handler+0xcc/0xe4 [ 79.134100][ T5306] el0t_64_sync+0x1a0/0x1a4 [ 79.155436][ T5306] ------------[ cut here ]------------ [ 79.156471][ T5306] WARNING: CPU: 1 PID: 5306 at fs/btrfs/inode.c:6776 btrfs_add_link+0x718/0xa9c [ 79.158009][ T5306] Modules linked in: [ 79.158623][ T5306] CPU: 1 PID: 5306 Comm: syz.0.30 Tainted: G W syzkaller #0 [ 79.160039][ T5306] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/18/2026 [ 79.161763][ T5306] pstate: 62400005 (nZCv daif +PAN -UAO +TCO -DIT -SSBS BTYPE=--) [ 79.162996][ T5306] pc : btrfs_add_link+0x718/0xa9c [ 79.163768][ T5306] lr : btrfs_add_link+0x718/0xa9c [ 79.164544][ T5306] sp : ffff800021487580 [ 79.165210][ T5306] x29: ffff800021487680 x28: ffff0000de9de840 x27: 0000000000000108 [ 79.166516][ T5306] x26: 00000000fffffff4 x25: 0000000000000000 x24: dfff800000000000 [ 79.167904][ T5306] x23: 0000000000000014 x22: 1fffe0001bd3bd13 x21: ffff700004290eb8 [ 79.169334][ T5306] x20: 00000000fffffff4 x19: ffff0000de9de898 x18: 0000000000000001 [ 79.170756][ T5306] x17: 0000000000000000 x16: ffff80001125f77c x15: 00000000ffffffff [ 79.172179][ T5306] x14: 0000000000000001 x13: 1fffe000341f47ab x12: 0000000000ff0100 [ 79.173585][ T5306] x11: 0000000000000000 x10: 0000000000000000 x9 : 50dddc97acbcc200 [ 79.174918][ T5306] x8 : 50dddc97acbcc200 x7 : 0000000000000001 x6 : 0000000000000001 [ 79.176268][ T5306] x5 : ffff800021486e98 x4 : ffff80001437f3e0 x3 : ffff80000850932c [ 79.177630][ T5306] x2 : 0000000000000001 x1 : 0000000100000000 x0 : 0000000000000026 [ 79.179083][ T5306] Call trace: [ 79.179683][ T5306] btrfs_add_link+0x718/0xa9c [ 79.180469][ T5306] btrfs_create+0x468/0x514 [ 79.181227][ T5306] path_openat+0xe18/0x2718 [ 79.182012][ T5306] do_filp_open+0x184/0x368 [ 79.182809][ T5306] do_sys_openat2+0x134/0x3f4 [ 79.183585][ T5306] __arm64_sys_openat+0x118/0x14c [ 79.184521][ T5306] invoke_syscall+0x98/0x2b0 [ 79.185287][ T5306] el0_svc_common+0x138/0x258 [ 79.186057][ T5306] do_el0_svc+0x58/0x13c [ 79.186836][ T5306] el0_svc+0x78/0x1d0 [ 79.187598][ T5306] el0t_64_sync_handler+0xcc/0xe4 [ 79.188459][ T5306] el0t_64_sync+0x1a0/0x1a4 [ 79.189241][ T5306] irq event stamp: 80120 [ 79.189924][ T5306] hardirqs last enabled at (80119): [] __up_console_sem+0xb4/0xfc [ 79.191587][ T5306] hardirqs last disabled at (80120): [] el1_dbg+0x24/0x80 [ 79.193010][ T5306] softirqs last enabled at (80100): [] handle_softirqs+0xa40/0xbe4 [ 79.194718][ T5306] softirqs last disabled at (80015): [] __irq_exit_rcu+0x240/0x43c [ 79.196353][ T5306] ---[ end trace 98df19d7dd1e49b3 ]--- [ 79.211092][ T5306] BTRFS: error (device loop0) in btrfs_add_link:6776: errno=-12 Out of memory [ 79.439281][ T5328] BTRFS: device fsid ed167579-eb65-4e76-9a50-61ac97e9b59d devid 1 transid 8 /dev/loop0 scanned by syz.0.31 (5328) [ 79.463509][ T5328] FAULT_INJECTION: forcing a failure. [ 79.463509][ T5328] name failslab, interval 1, probability 0, space 0, times 0 [ 79.465879][ T5328] CPU: 0 PID: 5328 Comm: syz.0.31 Tainted: G W syzkaller #0 [ 79.467105][ T5328] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/18/2026 [ 79.468695][ T5328] Call trace: [ 79.469181][ T5328] dump_backtrace+0x0/0x458 [ 79.469972][ T5328] show_stack+0x2c/0x3c [ 79.470675][ T5328] __dump_stack+0x30/0x40 [ 79.471406][ T5328] dump_stack_lvl+0xf4/0x15c [ 79.472222][ T5328] dump_stack+0x1c/0x5c [ 79.472933][ T5328] should_fail+0x3bc/0x514 [ 79.473723][ T5328] __should_failslab+0xbc/0x10c [ 79.474594][ T5328] should_failslab+0x10/0x28 [ 79.475352][ T5328] slab_pre_alloc_hook+0x64/0xe8 [ 79.476198][ T5328] kmem_cache_alloc+0x94/0x3d4 [ 79.477002][ T5328] btrfs_get_or_create_delayed_node+0x114/0x4a8 [ 79.478029][ T5328] btrfs_delayed_update_inode+0x3c/0x1b68 [ 79.478989][ T5328] btrfs_update_inode+0x210/0x3d4 [ 79.479776][ T5328] btrfs_create+0x364/0x514 [ 79.480505][ T5328] path_openat+0xe18/0x2718 [ 79.481238][ T5328] do_filp_open+0x184/0x368 [ 79.481996][ T5328] do_sys_openat2+0x134/0x3f4 [ 79.482765][ T5328] __arm64_sys_openat+0x118/0x14c [ 79.483673][ T5328] invoke_syscall+0x98/0x2b0 [ 79.484497][ T5328] el0_svc_common+0x138/0x258 [ 79.485324][ T5328] do_el0_svc+0x58/0x13c [ 79.486077][ T5328] el0_svc+0x78/0x1d0 [ 79.486802][ T5328] el0t_64_sync_handler+0xcc/0xe4 [ 79.487627][ T5328] el0t_64_sync+0x1a0/0x1a4 1970/01/01 00:01:19 executed programs: 19 [ 79.554572][ T4955] BTRFS: device fsid ed167579-eb65-4e76-9a50-61ac97e9b59d devid 1 transid 12 /dev/loop0 scanned by udevd (4955) [ 79.697260][ T5349] btrfs_printk: 165 callbacks suppressed [ 79.697271][ T5349] BTRFS info (device loop0): using sha256 (sha256-ce) checksum algorithm [ 79.699710][ T5349] BTRFS info (device loop0): setting nodatacow, compression disabled [ 79.701100][ T5349] BTRFS info (device loop0): setting datacow [ 79.702061][ T5349] BTRFS info (device loop0): doing ref verification [ 79.703270][ T5349] BTRFS info (device loop0): force clearing of disk cache [ 79.704420][ T5349] BTRFS info (device loop0): turning off barriers [ 79.705916][ T5349] BTRFS info (device loop0): use zlib compression, level 3 [ 79.707082][ T5349] BTRFS info (device loop0): using free space tree [ 79.708209][ T5349] BTRFS info (device loop0): has skinny extents [ 79.717119][ T5349] BTRFS info (device loop0): clearing free space tree [ 79.718390][ T5349] BTRFS info (device loop0): clearing compat-ro feature flag for FREE_SPACE_TREE (0x1) [ 79.719953][ T5349] BTRFS info (device loop0): clearing compat-ro feature flag for FREE_SPACE_TREE_VALID (0x2) [ 79.723347][ T5349] BTRFS info (device loop0): creating free space tree [ 79.724683][ T5349] BTRFS info (device loop0): setting compat-ro feature flag for FREE_SPACE_TREE (0x1) [ 79.727216][ T5349] BTRFS info (device loop0): setting compat-ro feature flag for FREE_SPACE_TREE_VALID (0x2) [ 79.731481][ T5349] FAULT_INJECTION: forcing a failure. [ 79.731481][ T5349] name failslab, interval 1, probability 0, space 0, times 0 [ 79.733510][ T5349] CPU: 1 PID: 5349 Comm: syz.0.32 Tainted: G W syzkaller #0 [ 79.734963][ T5349] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/18/2026 [ 79.736580][ T5349] Call trace: [ 79.737187][ T5349] dump_backtrace+0x0/0x458 [ 79.737920][ T5349] show_stack+0x2c/0x3c [ 79.738642][ T5349] __dump_stack+0x30/0x40 [ 79.739359][ T5349] dump_stack_lvl+0xf4/0x15c [ 79.740145][ T5349] dump_stack+0x1c/0x5c [ 79.740812][ T5349] should_fail+0x3bc/0x514 [ 79.741499][ T5349] __should_failslab+0xbc/0x10c [ 79.742261][ T5349] should_failslab+0x10/0x28 [ 79.743103][ T5349] slab_pre_alloc_hook+0x64/0xe8 [ 79.743961][ T5349] kmem_cache_alloc+0x94/0x3d4 [ 79.744722][ T5349] btrfs_alloc_path+0x5c/0x68 [ 79.745469][ T5349] btrfs_insert_dir_item+0x184/0x3e8 [ 79.746405][ T5349] btrfs_add_link+0x2b0/0xa9c [ 79.747246][ T5349] btrfs_create+0x468/0x514 [ 79.748050][ T5349] path_openat+0xe18/0x2718 [ 79.748805][ T5349] do_filp_open+0x184/0x368 [ 79.749588][ T5349] do_sys_openat2+0x134/0x3f4 [ 79.750395][ T5349] __arm64_sys_openat+0x118/0x14c [ 79.751420][ T5349] invoke_syscall+0x98/0x2b0 [ 79.752224][ T5349] el0_svc_common+0x138/0x258 [ 79.753019][ T5349] do_el0_svc+0x58/0x13c [ 79.753719][ T5349] el0_svc+0x78/0x1d0 [ 79.754380][ T5349] el0t_64_sync_handler+0xcc/0xe4 [ 79.755249][ T5349] el0t_64_sync+0x1a0/0x1a4 [ 79.758259][ T5349] ------------[ cut here ]------------ [ 79.759552][ T5349] WARNING: CPU: 1 PID: 5349 at fs/btrfs/inode.c:6776 btrfs_add_link+0x718/0xa9c [ 79.760987][ T5349] Modules linked in: [ 79.761605][ T5349] CPU: 1 PID: 5349 Comm: syz.0.32 Tainted: G W syzkaller #0 [ 79.762908][ T5349] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/18/2026 [ 79.764437][ T5349] pstate: 62400005 (nZCv daif +PAN -UAO +TCO -DIT -SSBS BTYPE=--) [ 79.765677][ T5349] pc : btrfs_add_link+0x718/0xa9c [ 79.766456][ T5349] lr : btrfs_add_link+0x718/0xa9c [ 79.767295][ T5349] sp : ffff8000216b7580 [ 79.767994][ T5349] x29: ffff8000216b7680 x28: ffff0000de9deb00 x27: 0000000000000108 [ 79.769335][ T5349] x26: 00000000fffffff4 x25: 0000000000000000 x24: dfff800000000000 [ 79.770635][ T5349] x23: 0000000000000014 x22: 1fffe0001bd3bd6b x21: ffff7000042d6eb8 [ 79.772120][ T5349] x20: 00000000fffffff4 x19: ffff0000de9deb58 x18: 0000000000000001 [ 79.773603][ T5349] x17: 0000000000000000 x16: ffff80001125f77c x15: 00000000ffffffff [ 79.774854][ T5349] x14: 0000000000000001 x13: 1fffe000341f47ab x12: 0000000000ff0100 [ 79.776053][ T5349] x11: 0000000000000000 x10: 0000000000000000 x9 : 455d08bb47d7e800 [ 79.777332][ T5349] x8 : 455d08bb47d7e800 x7 : 0000000000000001 x6 : 0000000000000001 [ 79.778698][ T5349] x5 : ffff8000216b6e98 x4 : ffff80001437f3e0 x3 : ffff80000850932c [ 79.780030][ T5349] x2 : 0000000000000001 x1 : 0000000100000000 x0 : 0000000000000026 [ 79.781389][ T5349] Call trace: [ 79.781907][ T5349] btrfs_add_link+0x718/0xa9c [ 79.782765][ T5349] btrfs_create+0x468/0x514 [ 79.783623][ T5349] path_openat+0xe18/0x2718 [ 79.784412][ T5349] do_filp_open+0x184/0x368 [ 79.785191][ T5349] do_sys_openat2+0x134/0x3f4 [ 79.785938][ T5349] __arm64_sys_openat+0x118/0x14c [ 79.786722][ T5349] invoke_syscall+0x98/0x2b0 [ 79.787484][ T5349] el0_svc_common+0x138/0x258 [ 79.788292][ T5349] do_el0_svc+0x58/0x13c [ 79.789010][ T5349] el0_svc+0x78/0x1d0 [ 79.789713][ T5349] el0t_64_sync_handler+0xcc/0xe4 [ 79.790596][ T5349] el0t_64_sync+0x1a0/0x1a4 [ 79.791404][ T5349] irq event stamp: 81090 [ 79.792157][ T5349] hardirqs last enabled at (81089): [] __up_console_sem+0xb4/0xfc [ 79.793773][ T5349] hardirqs last disabled at (81090): [] el1_dbg+0x24/0x80 [ 79.795198][ T5349] softirqs last enabled at (81066): [] handle_softirqs+0xa40/0xbe4 [ 79.796767][ T5349] softirqs last disabled at (81025): [] __irq_exit_rcu+0x240/0x43c [ 79.798273][ T5349] ---[ end trace 98df19d7dd1e49b4 ]--- [ 79.802657][ T5349] BTRFS: error (device loop0) in btrfs_add_link:6776: errno=-12 Out of memory [ 79.804142][ T5349] BTRFS info (device loop0): forced readonly [ 79.944298][ T5373] set_capacity_and_notify: 8 callbacks suppressed [ 79.944307][ T5373] loop0: detected capacity change from 0 to 32768 [ 79.986043][ T5373] BTRFS: device fsid ed167579-eb65-4e76-9a50-61ac97e9b59d devid 1 transid 8 /dev/loop0 scanned by syz.0.33 (5373) [ 80.028773][ T5373] BTRFS info (device loop0): using sha256 (sha256-ce) checksum algorithm [ 80.030301][ T5373] BTRFS info (device loop0): setting nodatacow, compression disabled [ 80.031785][ T5373] BTRFS info (device loop0): setting datacow [ 80.033016][ T5373] BTRFS info (device loop0): doing ref verification [ 80.034101][ T5373] BTRFS info (device loop0): force clearing of disk cache [ 80.035637][ T5373] BTRFS info (device loop0): turning off barriers [ 80.036795][ T5373] BTRFS info (device loop0): use zlib compression, level 3 [ 80.038013][ T5373] BTRFS info (device loop0): using free space tree [ 80.039101][ T5373] BTRFS info (device loop0): has skinny extents [ 80.047744][ T5373] BTRFS info (device loop0): clearing free space tree [ 80.048892][ T5373] BTRFS info (device loop0): clearing compat-ro feature flag for FREE_SPACE_TREE (0x1) [ 80.050512][ T5373] BTRFS info (device loop0): clearing compat-ro feature flag for FREE_SPACE_TREE_VALID (0x2) [ 80.054129][ T5373] BTRFS info (device loop0): creating free space tree [ 80.055830][ T5373] BTRFS info (device loop0): setting compat-ro feature flag for FREE_SPACE_TREE (0x1) [ 80.057369][ T5373] BTRFS info (device loop0): setting compat-ro feature flag for FREE_SPACE_TREE_VALID (0x2) [ 80.061355][ T5373] FAULT_INJECTION: forcing a failure. [ 80.061355][ T5373] name failslab, interval 1, probability 0, space 0, times 0 [ 80.063570][ T5373] CPU: 1 PID: 5373 Comm: syz.0.33 Tainted: G W syzkaller #0 [ 80.064914][ T5373] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/18/2026 [ 80.066657][ T5373] Call trace: [ 80.067195][ T5373] dump_backtrace+0x0/0x458 [ 80.067958][ T5373] show_stack+0x2c/0x3c [ 80.068627][ T5373] __dump_stack+0x30/0x40 [ 80.069326][ T5373] dump_stack_lvl+0xf4/0x15c [ 80.070114][ T5373] dump_stack+0x1c/0x5c [ 80.070831][ T5373] should_fail+0x3bc/0x514 [ 80.071596][ T5373] __should_failslab+0xbc/0x10c [ 80.072401][ T5373] should_failslab+0x10/0x28 [ 80.073218][ T5373] slab_pre_alloc_hook+0x64/0xe8 [ 80.074059][ T5373] kmem_cache_alloc+0x94/0x3d4 [ 80.074866][ T5373] btrfs_alloc_path+0x5c/0x68 [ 80.075605][ T5373] btrfs_insert_dir_item+0x184/0x3e8 [ 80.076454][ T5373] btrfs_add_link+0x2b0/0xa9c [ 80.077267][ T5373] btrfs_create+0x468/0x514 [ 80.078043][ T5373] path_openat+0xe18/0x2718 [ 80.078844][ T5373] do_filp_open+0x184/0x368 [ 80.079582][ T5373] do_sys_openat2+0x134/0x3f4 [ 80.080371][ T5373] __arm64_sys_openat+0x118/0x14c [ 80.081161][ T5373] invoke_syscall+0x98/0x2b0 [ 80.081944][ T5373] el0_svc_common+0x138/0x258 [ 80.082705][ T5373] do_el0_svc+0x58/0x13c [ 80.083389][ T5373] el0_svc+0x78/0x1d0 [ 80.084053][ T5373] el0t_64_sync_handler+0xcc/0xe4 [ 80.084942][ T5373] el0t_64_sync+0x1a0/0x1a4 [ 80.087455][ T5373] ------------[ cut here ]------------ [ 80.088467][ T5373] WARNING: CPU: 1 PID: 5373 at fs/btrfs/inode.c:6776 btrfs_add_link+0x718/0xa9c [ 80.090018][ T5373] Modules linked in: [ 80.090732][ T5373] CPU: 1 PID: 5373 Comm: syz.0.33 Tainted: G W syzkaller #0 [ 80.092214][ T5373] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/18/2026 [ 80.093933][ T5373] pstate: 62400005 (nZCv daif +PAN -UAO +TCO -DIT -SSBS BTYPE=--) [ 80.095273][ T5373] pc : btrfs_add_link+0x718/0xa9c [ 80.096130][ T5373] lr : btrfs_add_link+0x718/0xa9c [ 80.097017][ T5373] sp : ffff8000216b7580 [ 80.097798][ T5373] x29: ffff8000216b7680 x28: ffff0000de9de370 x27: 0000000000000108 [ 80.099174][ T5373] x26: 00000000fffffff4 x25: 0000000000000000 x24: dfff800000000000 [ 80.100520][ T5373] x23: 0000000000000014 x22: 1fffe0001bd3bc79 x21: ffff7000042d6eb8 [ 80.101794][ T5373] x20: 00000000fffffff4 x19: ffff0000de9de3c8 x18: 0000000000000001 [ 80.103194][ T5373] x17: 0000000000000000 x16: ffff80001125f77c x15: 00000000ffffffff [ 80.104584][ T5373] x14: 0000000000000001 x13: 1fffe000341f47ab x12: 0000000000ff0100 [ 80.105946][ T5373] x11: 0000000000000000 x10: 0000000000000000 x9 : 7f352e47214d7d00 [ 80.107273][ T5373] x8 : 7f352e47214d7d00 x7 : 0000000000000001 x6 : 0000000000000001 [ 80.108583][ T5373] x5 : ffff8000216b6e98 x4 : ffff80001437f3e0 x3 : ffff80000850932c [ 80.109987][ T5373] x2 : 0000000000000001 x1 : 0000000100000000 x0 : 0000000000000026 [ 80.111321][ T5373] Call trace: [ 80.111873][ T5373] btrfs_add_link+0x718/0xa9c [ 80.112669][ T5373] btrfs_create+0x468/0x514 [ 80.113415][ T5373] path_openat+0xe18/0x2718 [ 80.114146][ T5373] do_filp_open+0x184/0x368 [ 80.114971][ T5373] do_sys_openat2+0x134/0x3f4 [ 80.115731][ T5373] __arm64_sys_openat+0x118/0x14c [ 80.116630][ T5373] invoke_syscall+0x98/0x2b0 [ 80.117386][ T5373] el0_svc_common+0x138/0x258 [ 80.118164][ T5373] do_el0_svc+0x58/0x13c [ 80.118903][ T5373] el0_svc+0x78/0x1d0 [ 80.119535][ T5373] el0t_64_sync_handler+0xcc/0xe4 [ 80.120403][ T5373] el0t_64_sync+0x1a0/0x1a4 [ 80.121150][ T5373] irq event stamp: 80258 [ 80.121863][ T5373] hardirqs last enabled at (80257): [] __up_console_sem+0xb4/0xfc [ 80.123523][ T5373] hardirqs last disabled at (80258): [] el1_dbg+0x24/0x80 [ 80.125041][ T5373] softirqs last enabled at (80238): [] handle_softirqs+0xa40/0xbe4 [ 80.126651][ T5373] softirqs last disabled at (80175): [] __irq_exit_rcu+0x240/0x43c [ 80.128275][ T5373] ---[ end trace 98df19d7dd1e49b5 ]--- [ 80.131206][ T5373] BTRFS: error (device loop0) in btrfs_add_link:6776: errno=-12 Out of memory [ 80.132599][ T5373] BTRFS info (device loop0): forced readonly [ 80.304678][ T5395] loop0: detected capacity change from 0 to 32768 [ 80.359071][ T5395] BTRFS: device fsid ed167579-eb65-4e76-9a50-61ac97e9b59d devid 1 transid 8 /dev/loop0 scanned by syz.0.34 (5395) [ 80.363958][ T5395] BTRFS info (device loop0): using sha256 (sha256-ce) checksum algorithm [ 80.365519][ T5395] BTRFS info (device loop0): setting nodatacow, compression disabled [ 80.366930][ T5395] BTRFS info (device loop0): setting datacow [ 80.367945][ T5395] BTRFS info (device loop0): doing ref verification [ 80.369023][ T5395] BTRFS info (device loop0): force clearing of disk cache [ 80.370131][ T5395] BTRFS info (device loop0): turning off barriers [ 80.371469][ T5395] BTRFS info (device loop0): use zlib compression, level 3 [ 80.372652][ T5395] BTRFS info (device loop0): using free space tree [ 80.373770][ T5395] BTRFS info (device loop0): has skinny extents [ 80.384674][ T5395] BTRFS info (device loop0): clearing free space tree [ 80.385803][ T5395] BTRFS info (device loop0): clearing compat-ro feature flag for FREE_SPACE_TREE (0x1) [ 80.387389][ T5395] BTRFS info (device loop0): clearing compat-ro feature flag for FREE_SPACE_TREE_VALID (0x2) [ 80.390999][ T5395] BTRFS info (device loop0): creating free space tree [ 80.392520][ T5395] BTRFS info (device loop0): setting compat-ro feature flag for FREE_SPACE_TREE (0x1) [ 80.394160][ T5395] BTRFS info (device loop0): setting compat-ro feature flag for FREE_SPACE_TREE_VALID (0x2) [ 80.400068][ T5395] FAULT_INJECTION: forcing a failure. [ 80.400068][ T5395] name failslab, interval 1, probability 0, space 0, times 0 [ 80.402351][ T5395] CPU: 1 PID: 5395 Comm: syz.0.34 Tainted: G W syzkaller #0 [ 80.403688][ T5395] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/18/2026 [ 80.405363][ T5395] Call trace: [ 80.405897][ T5395] dump_backtrace+0x0/0x458 [ 80.406675][ T5395] show_stack+0x2c/0x3c [ 80.407344][ T5395] __dump_stack+0x30/0x40 [ 80.408077][ T5395] dump_stack_lvl+0xf4/0x15c [ 80.408857][ T5395] dump_stack+0x1c/0x5c [ 80.409535][ T5395] should_fail+0x3bc/0x514 [ 80.410304][ T5395] __should_failslab+0xbc/0x10c [ 80.411147][ T5395] should_failslab+0x10/0x28 [ 80.411893][ T5395] slab_pre_alloc_hook+0x64/0xe8 [ 80.412689][ T5395] kmem_cache_alloc+0x94/0x3d4 [ 80.413490][ T5395] btrfs_alloc_path+0x5c/0x68 [ 80.414254][ T5395] btrfs_insert_dir_item+0x184/0x3e8 [ 80.415135][ T5395] btrfs_add_link+0x2b0/0xa9c [ 80.415942][ T5395] btrfs_create+0x468/0x514 [ 80.416717][ T5395] path_openat+0xe18/0x2718 [ 80.417562][ T5395] do_filp_open+0x184/0x368 [ 80.418352][ T5395] do_sys_openat2+0x134/0x3f4 [ 80.419179][ T5395] __arm64_sys_openat+0x118/0x14c [ 80.420001][ T5395] invoke_syscall+0x98/0x2b0 [ 80.420796][ T5395] el0_svc_common+0x138/0x258 [ 80.421617][ T5395] do_el0_svc+0x58/0x13c [ 80.422286][ T5395] el0_svc+0x78/0x1d0 [ 80.422931][ T5395] el0t_64_sync_handler+0xcc/0xe4 [ 80.423810][ T5395] el0t_64_sync+0x1a0/0x1a4 [ 80.425533][ T5395] ------------[ cut here ]------------ [ 80.426856][ T5395] WARNING: CPU: 1 PID: 5395 at fs/btrfs/inode.c:6776 btrfs_add_link+0x718/0xa9c [ 80.428300][ T5395] Modules linked in: [ 80.428954][ T5395] CPU: 1 PID: 5395 Comm: syz.0.34 Tainted: G W syzkaller #0 [ 80.430411][ T5395] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/18/2026 [ 80.432210][ T5395] pstate: 62400005 (nZCv daif +PAN -UAO +TCO -DIT -SSBS BTYPE=--) [ 80.433507][ T5395] pc : btrfs_add_link+0x718/0xa9c [ 80.434344][ T5395] lr : btrfs_add_link+0x718/0xa9c [ 80.435213][ T5395] sp : ffff8000215a7580 [ 80.435919][ T5395] x29: ffff8000215a7680 x28: ffff0000de9dac60 x27: 0000000000000108 [ 80.437307][ T5395] x26: 00000000fffffff4 x25: 0000000000000000 x24: dfff800000000000 [ 80.438700][ T5395] x23: 0000000000000014 x22: 1fffe0001bd3b597 x21: ffff7000042b4eb8 [ 80.440147][ T5395] x20: 00000000fffffff4 x19: ffff0000de9dacb8 x18: 0000000000000001 [ 80.441532][ T5395] x17: 0000000000000000 x16: ffff80001125f77c x15: 00000000ffffffff [ 80.442937][ T5395] x14: 0000000000000001 x13: 1fffe000341f47ab x12: 0000000000ff0100 [ 80.444367][ T5395] x11: 0000000000000000 x10: 0000000000000000 x9 : 7568c733f7cae600 [ 80.445727][ T5395] x8 : 7568c733f7cae600 x7 : 0000000000000001 x6 : 0000000000000001 [ 80.447008][ T5395] x5 : ffff8000215a6e98 x4 : ffff80001437f3e0 x3 : ffff80000850932c [ 80.448417][ T5395] x2 : 0000000000000001 x1 : 0000000100000000 x0 : 0000000000000026 [ 80.449830][ T5395] Call trace: [ 80.450397][ T5395] btrfs_add_link+0x718/0xa9c [ 80.451225][ T5395] btrfs_create+0x468/0x514 [ 80.451937][ T5395] path_openat+0xe18/0x2718 [ 80.452701][ T5395] do_filp_open+0x184/0x368 [ 80.453485][ T5395] do_sys_openat2+0x134/0x3f4 [ 80.454311][ T5395] __arm64_sys_openat+0x118/0x14c [ 80.455144][ T5395] invoke_syscall+0x98/0x2b0 [ 80.455847][ T5395] el0_svc_common+0x138/0x258 [ 80.456624][ T5395] do_el0_svc+0x58/0x13c [ 80.457384][ T5395] el0_svc+0x78/0x1d0 [ 80.458077][ T5395] el0t_64_sync_handler+0xcc/0xe4 [ 80.458928][ T5395] el0t_64_sync+0x1a0/0x1a4 [ 80.459696][ T5395] irq event stamp: 80334 [ 80.460472][ T5395] hardirqs last enabled at (80333): [] __up_console_sem+0xb4/0xfc [ 80.462150][ T5395] hardirqs last disabled at (80334): [] el1_dbg+0x24/0x80 [ 80.463577][ T5395] softirqs last enabled at (80310): [] handle_softirqs+0xa40/0xbe4 [ 80.465213][ T5395] softirqs last disabled at (80221): [] __irq_exit_rcu+0x240/0x43c [ 80.466881][ T5395] ---[ end trace 98df19d7dd1e49b6 ]--- [ 80.468960][ T5395] BTRFS: error (device loop0) in btrfs_add_link:6776: errno=-12 Out of memory [ 80.470460][ T5395] BTRFS info (device loop0): forced readonly [ 80.661814][ T5417] loop0: detected capacity change from 0 to 32768 [ 80.708806][ T5417] BTRFS: device fsid ed167579-eb65-4e76-9a50-61ac97e9b59d devid 1 transid 8 /dev/loop0 scanned by syz.0.35 (5417) [ 80.712851][ T5417] BTRFS info (device loop0): using sha256 (sha256-ce) checksum algorithm [ 80.714327][ T5417] BTRFS info (device loop0): setting nodatacow, compression disabled [ 80.715951][ T5417] BTRFS info (device loop0): setting datacow [ 80.716919][ T5417] BTRFS info (device loop0): doing ref verification [ 80.717996][ T5417] BTRFS info (device loop0): force clearing of disk cache [ 80.719316][ T5417] BTRFS info (device loop0): turning off barriers [ 80.720336][ T5417] BTRFS info (device loop0): use zlib compression, level 3 [ 80.721540][ T5417] BTRFS info (device loop0): using free space tree [ 80.722731][ T5417] BTRFS info (device loop0): has skinny extents [ 80.733014][ T5417] BTRFS info (device loop0): clearing free space tree [ 80.734089][ T5417] BTRFS info (device loop0): clearing compat-ro feature flag for FREE_SPACE_TREE (0x1) [ 80.735969][ T5417] BTRFS info (device loop0): clearing compat-ro feature flag for FREE_SPACE_TREE_VALID (0x2) [ 80.739254][ T5417] BTRFS info (device loop0): creating free space tree [ 80.740604][ T5417] BTRFS info (device loop0): setting compat-ro feature flag for FREE_SPACE_TREE (0x1) [ 80.742113][ T5417] BTRFS info (device loop0): setting compat-ro feature flag for FREE_SPACE_TREE_VALID (0x2) [ 80.747276][ T5417] FAULT_INJECTION: forcing a failure. [ 80.747276][ T5417] name failslab, interval 1, probability 0, space 0, times 0 [ 80.749333][ T5417] CPU: 0 PID: 5417 Comm: syz.0.35 Tainted: G W syzkaller #0 [ 80.750760][ T5417] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/18/2026 [ 80.752383][ T5417] Call trace: [ 80.752883][ T5417] dump_backtrace+0x0/0x458 [ 80.753617][ T5417] show_stack+0x2c/0x3c [ 80.754271][ T5417] __dump_stack+0x30/0x40 [ 80.754996][ T5417] dump_stack_lvl+0xf4/0x15c [ 80.755804][ T5417] dump_stack+0x1c/0x5c [ 80.756527][ T5417] should_fail+0x3bc/0x514 [ 80.757276][ T5417] __should_failslab+0xbc/0x10c [ 80.758066][ T5417] should_failslab+0x10/0x28 [ 80.758819][ T5417] slab_pre_alloc_hook+0x64/0xe8 [ 80.759627][ T5417] kmem_cache_alloc+0x94/0x3d4 [ 80.760419][ T5417] security_inode_alloc+0x38/0x11c [ 80.761224][ T5417] inode_init_always+0x670/0xa84 [ 80.762081][ T5417] new_inode_pseudo+0x7c/0x1fc [ 80.762887][ T5417] new_inode+0x38/0x174 [ 80.763563][ T5417] btrfs_new_inode+0x158/0x1564 [ 80.764394][ T5417] btrfs_create+0x24c/0x514 [ 80.765182][ T5417] path_openat+0xe18/0x2718 [ 80.765965][ T5417] do_filp_open+0x184/0x368 [ 80.766723][ T5417] do_sys_openat2+0x134/0x3f4 [ 80.767526][ T5417] __arm64_sys_openat+0x118/0x14c [ 80.768359][ T5417] invoke_syscall+0x98/0x2b0 [ 80.769174][ T5417] el0_svc_common+0x138/0x258 [ 80.769930][ T5417] do_el0_svc+0x58/0x13c [ 80.770626][ T5417] el0_svc+0x78/0x1d0 [ 80.771283][ T5417] el0t_64_sync_handler+0xcc/0xe4 [ 80.772164][ T5417] el0t_64_sync+0x1a0/0x1a4 [ 80.912660][ T5439] loop0: detected capacity change from 0 to 32768 [ 80.918776][ T5439] BTRFS: device fsid ed167579-eb65-4e76-9a50-61ac97e9b59d devid 1 transid 8 /dev/loop0 scanned by syz.0.36 (5439) [ 80.923400][ T5439] BTRFS info (device loop0): using sha256 (sha256-ce) checksum algorithm [ 80.925622][ T5439] BTRFS info (device loop0): setting nodatacow, compression disabled [ 80.926950][ T5439] BTRFS info (device loop0): setting datacow [ 80.928003][ T5439] BTRFS info (device loop0): doing ref verification [ 80.929201][ T5439] BTRFS info (device loop0): force clearing of disk cache [ 80.930292][ T5439] BTRFS info (device loop0): turning off barriers [ 80.931288][ T5439] BTRFS info (device loop0): use zlib compression, level 3 [ 80.932359][ T5439] BTRFS info (device loop0): using free space tree [ 80.933313][ T5439] BTRFS info (device loop0): has skinny extents [ 80.945507][ T5439] BTRFS info (device loop0): clearing free space tree [ 80.946598][ T5439] BTRFS info (device loop0): clearing compat-ro feature flag for FREE_SPACE_TREE (0x1) [ 80.948161][ T5439] BTRFS info (device loop0): clearing compat-ro feature flag for FREE_SPACE_TREE_VALID (0x2) [ 80.951328][ T5439] BTRFS info (device loop0): creating free space tree [ 80.952711][ T5439] BTRFS info (device loop0): setting compat-ro feature flag for FREE_SPACE_TREE (0x1) [ 80.954382][ T5439] BTRFS info (device loop0): setting compat-ro feature flag for FREE_SPACE_TREE_VALID (0x2) [ 80.959196][ T5439] FAULT_INJECTION: forcing a failure. [ 80.959196][ T5439] name failslab, interval 1, probability 0, space 0, times 0 [ 80.961487][ T5439] CPU: 1 PID: 5439 Comm: syz.0.36 Tainted: G W syzkaller #0 [ 80.962954][ T5439] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/18/2026 [ 80.964609][ T5439] Call trace: [ 80.965140][ T5439] dump_backtrace+0x0/0x458 [ 80.965901][ T5439] show_stack+0x2c/0x3c [ 80.966616][ T5439] __dump_stack+0x30/0x40 [ 80.967347][ T5439] dump_stack_lvl+0xf4/0x15c [ 80.968128][ T5439] dump_stack+0x1c/0x5c [ 80.968824][ T5439] should_fail+0x3bc/0x514 [ 80.969530][ T5439] __should_failslab+0xbc/0x10c [ 80.970320][ T5439] should_failslab+0x10/0x28 [ 80.971099][ T5439] slab_pre_alloc_hook+0x64/0xe8 [ 80.971981][ T5439] kmem_cache_alloc+0x94/0x3d4 [ 80.972837][ T5439] btrfs_alloc_path+0x5c/0x68 [ 80.973709][ T5439] btrfs_insert_dir_item+0x184/0x3e8 [ 80.974602][ T5439] btrfs_add_link+0x2b0/0xa9c [ 80.975425][ T5439] btrfs_create+0x468/0x514 [ 80.976181][ T5439] path_openat+0xe18/0x2718 [ 80.976967][ T5439] do_filp_open+0x184/0x368 [ 80.977770][ T5439] do_sys_openat2+0x134/0x3f4 [ 80.978583][ T5439] __arm64_sys_openat+0x118/0x14c [ 80.979426][ T5439] invoke_syscall+0x98/0x2b0 [ 80.980167][ T5439] el0_svc_common+0x138/0x258 [ 80.980903][ T5439] do_el0_svc+0x58/0x13c [ 80.981614][ T5439] el0_svc+0x78/0x1d0 [ 80.982299][ T5439] el0t_64_sync_handler+0xcc/0xe4 [ 80.983131][ T5439] el0t_64_sync+0x1a0/0x1a4 [ 80.985353][ T5439] ------------[ cut here ]------------ [ 80.986383][ T5439] WARNING: CPU: 1 PID: 5439 at fs/btrfs/inode.c:6776 btrfs_add_link+0x718/0xa9c [ 80.987860][ T5439] Modules linked in: [ 80.988526][ T5439] CPU: 1 PID: 5439 Comm: syz.0.36 Tainted: G W syzkaller #0 [ 80.989996][ T5439] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/18/2026 [ 80.991717][ T5439] pstate: 62400005 (nZCv daif +PAN -UAO +TCO -DIT -SSBS BTYPE=--) [ 80.993061][ T5439] pc : btrfs_add_link+0x718/0xa9c [ 80.993873][ T5439] lr : btrfs_add_link+0x718/0xa9c [ 80.994693][ T5439] sp : ffff8000215a7580 [ 80.995344][ T5439] x29: ffff8000215a7680 x28: ffff0000de9dab00 x27: 0000000000000108 [ 80.996743][ T5439] x26: 00000000fffffff4 x25: 0000000000000000 x24: dfff800000000000 [ 80.998215][ T5439] x23: 0000000000000014 x22: 1fffe0001bd3b56b x21: ffff7000042b4eb8 [ 80.999600][ T5439] x20: 00000000fffffff4 x19: ffff0000de9dab58 x18: 0000000000000001 [ 81.000921][ T5439] x17: 0000000000000000 x16: ffff80001125f77c x15: 00000000ffffffff [ 81.002380][ T5439] x14: 0000000000000001 x13: 1fffe000341f47ab x12: 0000000000ff0100 [ 81.003767][ T5439] x11: 0000000000000000 x10: 0000000000000000 x9 : 55bda6f490a49600 [ 81.005122][ T5439] x8 : 55bda6f490a49600 x7 : 0000000000000001 x6 : 0000000000000001 [ 81.006594][ T5439] x5 : ffff8000215a6e98 x4 : ffff80001437f3e0 x3 : ffff80000850932c [ 81.007965][ T5439] x2 : 0000000000000001 x1 : 0000000100000000 x0 : 0000000000000026 [ 81.009406][ T5439] Call trace: [ 81.009966][ T5439] btrfs_add_link+0x718/0xa9c [ 81.010784][ T5439] btrfs_create+0x468/0x514 [ 81.011539][ T5439] path_openat+0xe18/0x2718 [ 81.012317][ T5439] do_filp_open+0x184/0x368 [ 81.013114][ T5439] do_sys_openat2+0x134/0x3f4 [ 81.013937][ T5439] __arm64_sys_openat+0x118/0x14c [ 81.014814][ T5439] invoke_syscall+0x98/0x2b0 [ 81.015601][ T5439] el0_svc_common+0x138/0x258 [ 81.016373][ T5439] do_el0_svc+0x58/0x13c [ 81.017066][ T5439] el0_svc+0x78/0x1d0 [ 81.017686][ T5439] el0t_64_sync_handler+0xcc/0xe4 [ 81.018533][ T5439] el0t_64_sync+0x1a0/0x1a4 [ 81.019295][ T5439] irq event stamp: 79980 [ 81.020049][ T5439] hardirqs last enabled at (79979): [] __up_console_sem+0xb4/0xfc [ 81.021560][ T5439] hardirqs last disabled at (79980): [] el1_dbg+0x24/0x80 [ 81.022935][ T5439] softirqs last enabled at (79960): [] handle_softirqs+0xa40/0xbe4 [ 81.024418][ T5439] softirqs last disabled at (79931): [] __irq_exit_rcu+0x240/0x43c [ 81.026005][ T5439] ---[ end trace 98df19d7dd1e49b7 ]--- [ 81.028851][ T5439] BTRFS: error (device loop0) in btrfs_add_link:6776: errno=-12 Out of memory [ 81.030294][ T5439] BTRFS info (device loop0): forced readonly [ 81.191490][ T5461] loop0: detected capacity change from 0 to 32768 [ 81.215902][ T5461] BTRFS: device fsid ed167579-eb65-4e76-9a50-61ac97e9b59d devid 1 transid 8 /dev/loop0 scanned by syz.0.37 (5461) [ 81.222079][ T5461] BTRFS info (device loop0): using sha256 (sha256-ce) checksum algorithm [ 81.223418][ T5461] BTRFS info (device loop0): setting nodatacow, compression disabled [ 81.224854][ T5461] BTRFS info (device loop0): setting datacow [ 81.225842][ T5461] BTRFS info (device loop0): doing ref verification [ 81.226964][ T5461] BTRFS info (device loop0): force clearing of disk cache [ 81.228124][ T5461] BTRFS info (device loop0): turning off barriers [ 81.229306][ T5461] BTRFS info (device loop0): use zlib compression, level 3 [ 81.230571][ T5461] BTRFS info (device loop0): using free space tree [ 81.231749][ T5461] BTRFS info (device loop0): has skinny extents [ 81.240457][ T5461] BTRFS info (device loop0): clearing free space tree [ 81.241483][ T5461] BTRFS info (device loop0): clearing compat-ro feature flag for FREE_SPACE_TREE (0x1) [ 81.243030][ T5461] BTRFS info (device loop0): clearing compat-ro feature flag for FREE_SPACE_TREE_VALID (0x2) [ 81.251845][ T5461] BTRFS info (device loop0): creating free space tree [ 81.253210][ T5461] BTRFS info (device loop0): setting compat-ro feature flag for FREE_SPACE_TREE (0x1) [ 81.255576][ T5461] BTRFS info (device loop0): setting compat-ro feature flag for FREE_SPACE_TREE_VALID (0x2) [ 81.259874][ T5461] FAULT_INJECTION: forcing a failure. [ 81.259874][ T5461] name failslab, interval 1, probability 0, space 0, times 0 [ 81.261837][ T5461] CPU: 1 PID: 5461 Comm: syz.0.37 Tainted: G W syzkaller #0 [ 81.263249][ T5461] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/18/2026 [ 81.264951][ T5461] Call trace: [ 81.265521][ T5461] dump_backtrace+0x0/0x458 [ 81.266262][ T5461] show_stack+0x2c/0x3c [ 81.266966][ T5461] __dump_stack+0x30/0x40 [ 81.267696][ T5461] dump_stack_lvl+0xf4/0x15c [ 81.268517][ T5461] dump_stack+0x1c/0x5c [ 81.269241][ T5461] should_fail+0x3bc/0x514 [ 81.270021][ T5461] __should_failslab+0xbc/0x10c [ 81.270766][ T5461] should_failslab+0x10/0x28 [ 81.271544][ T5461] slab_pre_alloc_hook+0x64/0xe8 [ 81.272385][ T5461] kmem_cache_alloc+0x94/0x3d4 [ 81.273157][ T5461] btrfs_alloc_path+0x5c/0x68 [ 81.273871][ T5461] btrfs_insert_dir_item+0x184/0x3e8 [ 81.274713][ T5461] btrfs_add_link+0x2b0/0xa9c [ 81.275457][ T5461] btrfs_create+0x468/0x514 [ 81.276144][ T5461] path_openat+0xe18/0x2718 [ 81.276830][ T5461] do_filp_open+0x184/0x368 [ 81.277602][ T5461] do_sys_openat2+0x134/0x3f4 [ 81.278405][ T5461] __arm64_sys_openat+0x118/0x14c [ 81.279258][ T5461] invoke_syscall+0x98/0x2b0 [ 81.280060][ T5461] el0_svc_common+0x138/0x258 [ 81.280834][ T5461] do_el0_svc+0x58/0x13c [ 81.281482][ T5461] el0_svc+0x78/0x1d0 [ 81.282119][ T5461] el0t_64_sync_handler+0xcc/0xe4 [ 81.282902][ T5461] el0t_64_sync+0x1a0/0x1a4 [ 81.283841][ T5461] ------------[ cut here ]------------ [ 81.284819][ T5461] WARNING: CPU: 1 PID: 5461 at fs/btrfs/inode.c:6776 btrfs_add_link+0x718/0xa9c [ 81.286135][ T5461] Modules linked in: [ 81.286692][ T5461] CPU: 1 PID: 5461 Comm: syz.0.37 Tainted: G W syzkaller #0 [ 81.288028][ T5461] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/18/2026 [ 81.289547][ T5461] pstate: 62400005 (nZCv daif +PAN -UAO +TCO -DIT -SSBS BTYPE=--) [ 81.290889][ T5461] pc : btrfs_add_link+0x718/0xa9c [ 81.291717][ T5461] lr : btrfs_add_link+0x718/0xa9c [ 81.292576][ T5461] sp : ffff800021c47580 [ 81.293235][ T5461] x29: ffff800021c47680 x28: ffff0000de9da840 x27: 0000000000000108 [ 81.294501][ T5461] x26: 00000000fffffff4 x25: 0000000000000000 x24: dfff800000000000 [ 81.295893][ T5461] x23: 0000000000000014 x22: 1fffe0001bd3b513 x21: ffff700004388eb8 [ 81.297365][ T5461] x20: 00000000fffffff4 x19: ffff0000de9da898 x18: 0000000000000001 [ 81.298775][ T5461] x17: 0000000000000000 x16: ffff800008304c04 x15: 00000000ffffffff [ 81.300146][ T5461] x14: 0000000000000001 x13: 1ffff00004388dd0 x12: 0000000000ff0100 [ 81.301444][ T5461] x11: 0000000000000000 x10: 0000000000000000 x9 : 21ec4256c1da0a00 [ 81.302785][ T5461] x8 : 21ec4256c1da0a00 x7 : 0000000000000001 x6 : 0000000000000001 [ 81.304117][ T5461] x5 : ffff800021c46e98 x4 : ffff80001437f3e0 x3 : ffff800008304d14 [ 81.305477][ T5461] x2 : 0000000000000001 x1 : 0000000100000000 x0 : 0000000000000026 [ 81.306885][ T5461] Call trace: [ 81.307435][ T5461] btrfs_add_link+0x718/0xa9c [ 81.308234][ T5461] btrfs_create+0x468/0x514 [ 81.308947][ T5461] path_openat+0xe18/0x2718 [ 81.309690][ T5461] do_filp_open+0x184/0x368 [ 81.310400][ T5461] do_sys_openat2+0x134/0x3f4 [ 81.311138][ T5461] __arm64_sys_openat+0x118/0x14c [ 81.311950][ T5461] invoke_syscall+0x98/0x2b0 [ 81.312684][ T5461] el0_svc_common+0x138/0x258 [ 81.313469][ T5461] do_el0_svc+0x58/0x13c [ 81.314161][ T5461] el0_svc+0x78/0x1d0 [ 81.314823][ T5461] el0t_64_sync_handler+0xcc/0xe4 [ 81.315725][ T5461] el0t_64_sync+0x1a0/0x1a4 [ 81.316507][ T5461] irq event stamp: 80450 [ 81.317250][ T5461] hardirqs last enabled at (80449): [] exit_to_kernel_mode+0xe0/0x168 [ 81.318913][ T5461] hardirqs last disabled at (80450): [] el1_dbg+0x24/0x80 [ 81.320292][ T5461] softirqs last enabled at (80448): [] handle_softirqs+0xa40/0xbe4 [ 81.321835][ T5461] softirqs last disabled at (80439): [] __irq_exit_rcu+0x240/0x43c [ 81.323362][ T5461] ---[ end trace 98df19d7dd1e49b8 ]--- [ 81.324858][ T5461] BTRFS: error (device loop0) in btrfs_add_link:6776: errno=-12 Out of memory [ 81.326291][ T5461] BTRFS info (device loop0): forced readonly [ 81.494526][ T5483] loop0: detected capacity change from 0 to 32768 [ 81.549812][ T5483] BTRFS: device fsid ed167579-eb65-4e76-9a50-61ac97e9b59d devid 1 transid 8 /dev/loop0 scanned by syz.0.38 (5483) [ 81.553628][ T5483] BTRFS info (device loop0): using sha256 (sha256-ce) checksum algorithm [ 81.555165][ T5483] BTRFS info (device loop0): setting nodatacow, compression disabled [ 81.556573][ T5483] BTRFS info (device loop0): setting datacow [ 81.557541][ T5483] BTRFS info (device loop0): doing ref verification [ 81.558595][ T5483] BTRFS info (device loop0): force clearing of disk cache [ 81.571339][ T5483] FAULT_INJECTION: forcing a failure. [ 81.571339][ T5483] name fail_page_alloc, interval 1, probability 0, space 0, times 0 [ 81.573593][ T5483] CPU: 1 PID: 5483 Comm: syz.0.38 Tainted: G W syzkaller #0 [ 81.574980][ T5483] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/18/2026 [ 81.576708][ T5483] Call trace: [ 81.577252][ T5483] dump_backtrace+0x0/0x458 [ 81.578055][ T5483] show_stack+0x2c/0x3c [ 81.578817][ T5483] __dump_stack+0x30/0x40 [ 81.579512][ T5483] dump_stack_lvl+0xf4/0x15c [ 81.580306][ T5483] dump_stack+0x1c/0x5c [ 81.580981][ T5483] should_fail+0x3bc/0x514 [ 81.581776][ T5483] should_fail_alloc_page+0x74/0xa8 [ 81.582676][ T5483] prepare_alloc_pages+0x160/0x45c [ 81.583591][ T5483] __alloc_pages+0x108/0x470 [ 81.584391][ T5483] alloc_pages+0x34c/0x5c0 [ 81.585218][ T5483] new_slab+0xe0/0x544 [ 81.585896][ T5483] ___slab_alloc+0x6b4/0xd8c [ 81.586680][ T5483] __slab_alloc+0x68/0xc0 [ 81.587428][ T5483] kmem_cache_alloc+0x2a4/0x3d4 [ 81.588220][ T5483] btrfs_get_or_create_delayed_node+0x114/0x4a8 [ 81.589358][ T5483] btrfs_delayed_update_inode+0x3c/0x1b68 [ 81.590290][ T5483] btrfs_update_inode+0x210/0x3d4 [ 81.591117][ T5483] btrfs_create+0x364/0x514 [ 81.591858][ T5483] path_openat+0xe18/0x2718 [ 81.592592][ T5483] do_filp_open+0x184/0x368 [ 81.593311][ T5483] do_sys_openat2+0x134/0x3f4 [ 81.594122][ T5483] __arm64_sys_openat+0x118/0x14c [ 81.594988][ T5483] invoke_syscall+0x98/0x2b0 [ 81.595772][ T5483] el0_svc_common+0x138/0x258 [ 81.596607][ T5483] do_el0_svc+0x58/0x13c [ 81.597377][ T5483] el0_svc+0x78/0x1d0 [ 81.598081][ T5483] el0t_64_sync_handler+0xcc/0xe4 [ 81.598925][ T5483] el0t_64_sync+0x1a0/0x1a4 [ 81.632942][ T4955] BTRFS: device fsid ed167579-eb65-4e76-9a50-61ac97e9b59d devid 1 transid 12 /dev/loop0 scanned by udevd (4955) [ 81.734143][ T5505] loop0: detected capacity change from 0 to 32768 [ 81.838673][ T5505] FAULT_INJECTION: forcing a failure. [ 81.838673][ T5505] name failslab, interval 1, probability 0, space 0, times 0 [ 81.840776][ T5505] CPU: 0 PID: 5505 Comm: syz.0.39 Tainted: G W syzkaller #0 [ 81.842261][ T5505] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/18/2026 [ 81.844096][ T5505] Call trace: [ 81.844666][ T5505] dump_backtrace+0x0/0x458 [ 81.845468][ T5505] show_stack+0x2c/0x3c [ 81.846151][ T5505] __dump_stack+0x30/0x40 [ 81.846833][ T5505] dump_stack_lvl+0xf4/0x15c [ 81.847583][ T5505] dump_stack+0x1c/0x5c [ 81.848249][ T5505] should_fail+0x3bc/0x514 [ 81.849029][ T5505] __should_failslab+0xbc/0x10c [ 81.849934][ T5505] should_failslab+0x10/0x28 [ 81.850707][ T5505] slab_pre_alloc_hook+0x64/0xe8 [ 81.851565][ T5505] kmem_cache_alloc+0x94/0x3d4 [ 81.852324][ T5505] btrfs_alloc_path+0x5c/0x68 [ 81.853082][ T5505] btrfs_insert_dir_item+0x184/0x3e8 [ 81.854017][ T5505] btrfs_add_link+0x2b0/0xa9c [ 81.854830][ T5505] btrfs_create+0x468/0x514 [ 81.855681][ T5505] path_openat+0xe18/0x2718 [ 81.856478][ T5505] do_filp_open+0x184/0x368 [ 81.857243][ T5505] do_sys_openat2+0x134/0x3f4 [ 81.858034][ T5505] __arm64_sys_openat+0x118/0x14c [ 81.858899][ T5505] invoke_syscall+0x98/0x2b0 [ 81.859678][ T5505] el0_svc_common+0x138/0x258 [ 81.860470][ T5505] do_el0_svc+0x58/0x13c [ 81.861190][ T5505] el0_svc+0x78/0x1d0 [ 81.861879][ T5505] el0t_64_sync_handler+0xcc/0xe4 [ 81.862720][ T5505] el0t_64_sync+0x1a0/0x1a4 [ 81.863952][ T5505] ------------[ cut here ]------------ [ 81.865958][ T5505] WARNING: CPU: 0 PID: 5505 at fs/btrfs/inode.c:6776 btrfs_add_link+0x718/0xa9c [ 81.867273][ T5505] Modules linked in: [ 81.867940][ T5505] CPU: 0 PID: 5505 Comm: syz.0.39 Tainted: G W syzkaller #0 [ 81.869433][ T5505] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/18/2026 [ 81.871122][ T5505] pstate: 62400005 (nZCv daif +PAN -UAO +TCO -DIT -SSBS BTYPE=--) [ 81.872372][ T5505] pc : btrfs_add_link+0x718/0xa9c [ 81.873175][ T5505] lr : btrfs_add_link+0x718/0xa9c [ 81.874029][ T5505] sp : ffff800021a07580 [ 81.874792][ T5505] x29: ffff800021a07680 x28: ffff0000debc8dc0 x27: 0000000000000108 [ 81.876235][ T5505] x26: 00000000fffffff4 x25: 0000000000000000 x24: dfff800000000000 [ 81.877648][ T5505] x23: 0000000000000014 x22: 1fffe0001bd791c3 x21: ffff700004340eb8 [ 81.879076][ T5505] x20: 00000000fffffff4 x19: ffff0000debc8e18 x18: 0000000000000001 [ 81.880486][ T5505] x17: 0000000000000000 x16: ffff80001125f77c x15: 00000000ffffffff [ 81.881919][ T5505] x14: 0000000000000001 x13: 1fffe000341f05ab x12: 0000000000ff0100 [ 81.883327][ T5505] x11: 0000000000000000 x10: 0000000000000000 x9 : c11575dd7c85a100 [ 81.884773][ T5505] x8 : c11575dd7c85a100 x7 : 0000000000000001 x6 : 0000000000000001 [ 81.886144][ T5505] x5 : ffff800021a06e98 x4 : ffff80001437f3e0 x3 : ffff80000850932c [ 81.887453][ T5505] x2 : 0000000000000001 x1 : 0000000100000000 x0 : 0000000000000026 [ 81.888830][ T5505] Call trace: [ 81.889383][ T5505] btrfs_add_link+0x718/0xa9c [ 81.890218][ T5505] btrfs_create+0x468/0x514 [ 81.891029][ T5505] path_openat+0xe18/0x2718 [ 81.891752][ T5505] do_filp_open+0x184/0x368 [ 81.892525][ T5505] do_sys_openat2+0x134/0x3f4 [ 81.893340][ T5505] __arm64_sys_openat+0x118/0x14c [ 81.894238][ T5505] invoke_syscall+0x98/0x2b0 [ 81.895015][ T5505] el0_svc_common+0x138/0x258 [ 81.895852][ T5505] do_el0_svc+0x58/0x13c [ 81.896617][ T5505] el0_svc+0x78/0x1d0 [ 81.897265][ T5505] el0t_64_sync_handler+0xcc/0xe4 [ 81.898107][ T5505] el0t_64_sync+0x1a0/0x1a4 [ 81.898894][ T5505] irq event stamp: 79616 [ 81.899579][ T5505] hardirqs last enabled at (79615): [] __up_console_sem+0xb4/0xfc [ 81.901156][ T5505] hardirqs last disabled at (79616): [] el1_dbg+0x24/0x80 [ 81.902593][ T5505] softirqs last enabled at (79604): [] handle_softirqs+0xa40/0xbe4 [ 81.904227][ T5505] softirqs last disabled at (79591): [] __irq_exit_rcu+0x240/0x43c [ 81.905900][ T5505] ---[ end trace 98df19d7dd1e49b9 ]--- [ 81.908840][ T5505] BTRFS: error (device loop0) in btrfs_add_link:6776: errno=-12 Out of memory [ 82.039486][ T5527] loop0: detected capacity change from 0 to 32768 [ 82.076643][ T5527] BTRFS: device fsid ed167579-eb65-4e76-9a50-61ac97e9b59d devid 1 transid 8 /dev/loop0 scanned by syz.0.40 (5527) [ 82.093422][ T5527] FAULT_INJECTION: forcing a failure. [ 82.093422][ T5527] name failslab, interval 1, probability 0, space 0, times 0 [ 82.095741][ T5527] CPU: 0 PID: 5527 Comm: syz.0.40 Tainted: G W syzkaller #0 [ 82.097119][ T5527] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/18/2026 [ 82.098761][ T5527] Call trace: [ 82.099344][ T5527] dump_backtrace+0x0/0x458 [ 82.100114][ T5527] show_stack+0x2c/0x3c [ 82.100792][ T5527] __dump_stack+0x30/0x40 [ 82.101488][ T5527] dump_stack_lvl+0xf4/0x15c [ 82.102217][ T5527] dump_stack+0x1c/0x5c [ 82.102895][ T5527] should_fail+0x3bc/0x514 [ 82.103665][ T5527] __should_failslab+0xbc/0x10c [ 82.104416][ T5527] should_failslab+0x10/0x28 [ 82.105196][ T5527] slab_pre_alloc_hook+0x64/0xe8 [ 82.106072][ T5527] kmem_cache_alloc+0x94/0x3d4 [ 82.106850][ T5527] btrfs_alloc_path+0x5c/0x68 [ 82.107679][ T5527] btrfs_insert_dir_item+0x184/0x3e8 [ 82.108556][ T5527] btrfs_add_link+0x2b0/0xa9c [ 82.109348][ T5527] btrfs_create+0x468/0x514 [ 82.110192][ T5527] path_openat+0xe18/0x2718 [ 82.110977][ T5527] do_filp_open+0x184/0x368 [ 82.111744][ T5527] do_sys_openat2+0x134/0x3f4 [ 82.112526][ T5527] __arm64_sys_openat+0x118/0x14c [ 82.113389][ T5527] invoke_syscall+0x98/0x2b0 [ 82.114172][ T5527] el0_svc_common+0x138/0x258 [ 82.114928][ T5527] do_el0_svc+0x58/0x13c [ 82.115684][ T5527] el0_svc+0x78/0x1d0 [ 82.116385][ T5527] el0t_64_sync_handler+0xcc/0xe4 [ 82.117243][ T5527] el0t_64_sync+0x1a0/0x1a4 [ 82.118700][ T5527] ------------[ cut here ]------------ [ 82.119653][ T5527] WARNING: CPU: 0 PID: 5527 at fs/btrfs/inode.c:6776 btrfs_add_link+0x718/0xa9c [ 82.121058][ T5527] Modules linked in: [ 82.121697][ T5527] CPU: 0 PID: 5527 Comm: syz.0.40 Tainted: G W syzkaller #0 [ 82.123027][ T5527] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/18/2026 [ 82.124757][ T5527] pstate: 62400005 (nZCv daif +PAN -UAO +TCO -DIT -SSBS BTYPE=--) [ 82.126028][ T5527] pc : btrfs_add_link+0x718/0xa9c [ 82.126858][ T5527] lr : btrfs_add_link+0x718/0xa9c [ 82.127644][ T5527] sp : ffff800021d27580 [ 82.128371][ T5527] x29: ffff800021d27680 x28: ffff0000de9de0b0 x27: 0000000000000108 [ 82.129720][ T5527] x26: 00000000fffffff4 x25: 0000000000000000 x24: dfff800000000000 [ 82.131072][ T5527] x23: 0000000000000014 x22: 1fffe0001bd3bc21 x21: ffff7000043a4eb8 [ 82.132383][ T5527] x20: 00000000fffffff4 x19: ffff0000de9de108 x18: 0000000000000001 [ 82.133735][ T5527] x17: 0000000000000000 x16: ffff80001125f77c x15: 00000000ffffffff [ 82.135136][ T5527] x14: 0000000000000001 x13: 1fffe000341f05ab x12: 0000000000ff0100 [ 82.136528][ T5527] x11: 0000000000000000 x10: 0000000000000000 x9 : e233b91f3e108e00 [ 82.137812][ T5527] x8 : e233b91f3e108e00 x7 : 0000000000000001 x6 : 0000000000000001 [ 82.139104][ T5527] x5 : ffff800021d26e98 x4 : ffff80001437f3e0 x3 : ffff80000850932c [ 82.140440][ T5527] x2 : 0000000000000001 x1 : 0000000100000000 x0 : 0000000000000026 [ 82.141820][ T5527] Call trace: [ 82.142387][ T5527] btrfs_add_link+0x718/0xa9c [ 82.143181][ T5527] btrfs_create+0x468/0x514 [ 82.143947][ T5527] path_openat+0xe18/0x2718 [ 82.144718][ T5527] do_filp_open+0x184/0x368 [ 82.145508][ T5527] do_sys_openat2+0x134/0x3f4 [ 82.146280][ T5527] __arm64_sys_openat+0x118/0x14c [ 82.147144][ T5527] invoke_syscall+0x98/0x2b0 [ 82.147875][ T5527] el0_svc_common+0x138/0x258 [ 82.148690][ T5527] do_el0_svc+0x58/0x13c [ 82.149532][ T5527] el0_svc+0x78/0x1d0 [ 82.150175][ T5527] el0t_64_sync_handler+0xcc/0xe4 [ 82.151029][ T5527] el0t_64_sync+0x1a0/0x1a4 [ 82.151803][ T5527] irq event stamp: 79654 [ 82.152497][ T5527] hardirqs last enabled at (79653): [] __up_console_sem+0xb4/0xfc [ 82.154055][ T5527] hardirqs last disabled at (79654): [] el1_dbg+0x24/0x80 [ 82.155561][ T5527] softirqs last enabled at (79634): [] handle_softirqs+0xa40/0xbe4 [ 82.157301][ T5527] softirqs last disabled at (79619): [] __irq_exit_rcu+0x240/0x43c [ 82.159052][ T5527] ---[ end trace 98df19d7dd1e49ba ]--- [ 82.160220][ T5527] BTRFS: error (device loop0) in btrfs_add_link:6776: errno=-12 Out of memory [ 82.297050][ T5549] loop0: detected capacity change from 0 to 32768 [ 82.304185][ T5549] BTRFS: device fsid ed167579-eb65-4e76-9a50-61ac97e9b59d devid 1 transid 8 /dev/loop0 scanned by syz.0.41 (5549) [ 82.323946][ T5549] FAULT_INJECTION: forcing a failure. [ 82.323946][ T5549] name failslab, interval 1, probability 0, space 0, times 0 [ 82.326339][ T5549] CPU: 0 PID: 5549 Comm: syz.0.41 Tainted: G W syzkaller #0 [ 82.327801][ T5549] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/18/2026 [ 82.329532][ T5549] Call trace: [ 82.330046][ T5549] dump_backtrace+0x0/0x458 [ 82.330795][ T5549] show_stack+0x2c/0x3c [ 82.331528][ T5549] __dump_stack+0x30/0x40 [ 82.332225][ T5549] dump_stack_lvl+0xf4/0x15c [ 82.332915][ T5549] dump_stack+0x1c/0x5c [ 82.333609][ T5549] should_fail+0x3bc/0x514 [ 82.334316][ T5549] __should_failslab+0xbc/0x10c [ 82.335231][ T5549] should_failslab+0x10/0x28 [ 82.336044][ T5549] slab_pre_alloc_hook+0x64/0xe8 [ 82.336945][ T5549] kmem_cache_alloc+0x94/0x3d4 [ 82.337743][ T5549] btrfs_alloc_path+0x5c/0x68 [ 82.338518][ T5549] btrfs_insert_dir_item+0x184/0x3e8 [ 82.339463][ T5549] btrfs_add_link+0x2b0/0xa9c [ 82.340274][ T5549] btrfs_create+0x468/0x514 [ 82.341090][ T5549] path_openat+0xe18/0x2718 [ 82.341841][ T5549] do_filp_open+0x184/0x368 [ 82.342609][ T5549] do_sys_openat2+0x134/0x3f4 [ 82.343445][ T5549] __arm64_sys_openat+0x118/0x14c [ 82.344334][ T5549] invoke_syscall+0x98/0x2b0 [ 82.345140][ T5549] el0_svc_common+0x138/0x258 [ 82.345909][ T5549] do_el0_svc+0x58/0x13c [ 82.346661][ T5549] el0_svc+0x78/0x1d0 [ 82.347437][ T5549] el0t_64_sync_handler+0xcc/0xe4 [ 82.348313][ T5549] el0t_64_sync+0x1a0/0x1a4 [ 82.350383][ T5549] ------------[ cut here ]------------ [ 82.351286][ T5549] WARNING: CPU: 0 PID: 5549 at fs/btrfs/inode.c:6776 btrfs_add_link+0x718/0xa9c [ 82.352751][ T5549] Modules linked in: [ 82.353491][ T5549] CPU: 0 PID: 5549 Comm: syz.0.41 Tainted: G W syzkaller #0 [ 82.354955][ T5549] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/18/2026 [ 82.356613][ T5549] pstate: 62400005 (nZCv daif +PAN -UAO +TCO -DIT -SSBS BTYPE=--) [ 82.357955][ T5549] pc : btrfs_add_link+0x718/0xa9c [ 82.358815][ T5549] lr : btrfs_add_link+0x718/0xa9c [ 82.359667][ T5549] sp : ffff8000215a7580 [ 82.360383][ T5549] x29: ffff8000215a7680 x28: ffff0000de9dee70 x27: 0000000000000108 [ 82.361824][ T5549] x26: 00000000fffffff4 x25: 0000000000000000 x24: dfff800000000000 [ 82.363269][ T5549] x23: 0000000000000014 x22: 1fffe0001bd3bdd9 x21: ffff7000042b4eb8 [ 82.364689][ T5549] x20: 00000000fffffff4 x19: ffff0000de9deec8 x18: 0000000000000001 [ 82.366142][ T5549] x17: 0000000000000000 x16: ffff80001125f77c x15: 00000000ffffffff [ 82.367543][ T5549] x14: 0000000000000001 x13: 1fffe000341f05ab x12: 0000000000ff0100 [ 82.368939][ T5549] x11: 0000000000000000 x10: 0000000000000000 x9 : dcb66975a9dc9c00 [ 82.370386][ T5549] x8 : dcb66975a9dc9c00 x7 : 0000000000000001 x6 : 0000000000000001 [ 82.371772][ T5549] x5 : ffff8000215a6e98 x4 : ffff80001437f3e0 x3 : ffff80000850932c [ 82.373172][ T5549] x2 : 0000000000000001 x1 : 0000000100000000 x0 : 0000000000000026 [ 82.374491][ T5549] Call trace: [ 82.375029][ T5549] btrfs_add_link+0x718/0xa9c [ 82.375859][ T5549] btrfs_create+0x468/0x514 [ 82.376595][ T5549] path_openat+0xe18/0x2718 [ 82.377356][ T5549] do_filp_open+0x184/0x368 [ 82.378131][ T5549] do_sys_openat2+0x134/0x3f4 [ 82.378917][ T5549] __arm64_sys_openat+0x118/0x14c [ 82.379836][ T5549] invoke_syscall+0x98/0x2b0 [ 82.380713][ T5549] el0_svc_common+0x138/0x258 [ 82.381522][ T5549] do_el0_svc+0x58/0x13c [ 82.382213][ T5549] el0_svc+0x78/0x1d0 [ 82.382877][ T5549] el0t_64_sync_handler+0xcc/0xe4 [ 82.383733][ T5549] el0t_64_sync+0x1a0/0x1a4 [ 82.384530][ T5549] irq event stamp: 79712 [ 82.385256][ T5549] hardirqs last enabled at (79711): [] __up_console_sem+0xb4/0xfc [ 82.386886][ T5549] hardirqs last disabled at (79712): [] el1_dbg+0x24/0x80 [ 82.388270][ T5549] softirqs last enabled at (79692): [] handle_softirqs+0xa40/0xbe4 [ 82.389888][ T5549] softirqs last disabled at (79617): [] __irq_exit_rcu+0x240/0x43c [ 82.391540][ T5549] ---[ end trace 98df19d7dd1e49bb ]--- [ 82.393491][ T5549] BTRFS: error (device loop0) in btrfs_add_link:6776: errno=-12 Out of memory [ 82.527238][ T5571] loop0: detected capacity change from 0 to 32768 [ 82.576571][ T5571] BTRFS: device fsid ed167579-eb65-4e76-9a50-61ac97e9b59d devid 1 transid 8 /dev/loop0 scanned by syz.0.42 (5571) [ 82.653119][ T5571] FAULT_INJECTION: forcing a failure. [ 82.653119][ T5571] name failslab, interval 1, probability 0, space 0, times 0 [ 82.655272][ T5571] CPU: 0 PID: 5571 Comm: syz.0.42 Tainted: G W syzkaller #0 [ 82.656773][ T5571] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/18/2026 [ 82.658455][ T5571] Call trace: [ 82.659035][ T5571] dump_backtrace+0x0/0x458 [ 82.659827][ T5571] show_stack+0x2c/0x3c [ 82.660506][ T5571] __dump_stack+0x30/0x40 [ 82.661283][ T5571] dump_stack_lvl+0xf4/0x15c [ 82.662050][ T5571] dump_stack+0x1c/0x5c [ 82.662762][ T5571] should_fail+0x3bc/0x514 [ 82.663448][ T5571] __should_failslab+0xbc/0x10c [ 82.664299][ T5571] should_failslab+0x10/0x28 [ 82.665093][ T5571] slab_pre_alloc_hook+0x64/0xe8 [ 82.665819][ T5571] kmem_cache_alloc+0x94/0x3d4 [ 82.666569][ T5571] btrfs_alloc_path+0x5c/0x68 [ 82.667316][ T5571] btrfs_insert_dir_item+0x184/0x3e8 [ 82.668160][ T5571] btrfs_add_link+0x2b0/0xa9c [ 82.669015][ T5571] btrfs_create+0x468/0x514 [ 82.669815][ T5571] path_openat+0xe18/0x2718 [ 82.670642][ T5571] do_filp_open+0x184/0x368 [ 82.671425][ T5571] do_sys_openat2+0x134/0x3f4 [ 82.672202][ T5571] __arm64_sys_openat+0x118/0x14c [ 82.673022][ T5571] invoke_syscall+0x98/0x2b0 [ 82.673800][ T5571] el0_svc_common+0x138/0x258 [ 82.674572][ T5571] do_el0_svc+0x58/0x13c [ 82.675257][ T5571] el0_svc+0x78/0x1d0 [ 82.675927][ T5571] el0t_64_sync_handler+0xcc/0xe4 [ 82.676727][ T5571] el0t_64_sync+0x1a0/0x1a4 [ 82.678260][ T5571] ------------[ cut here ]------------ [ 82.679178][ T5571] WARNING: CPU: 0 PID: 5571 at fs/btrfs/inode.c:6776 btrfs_add_link+0x718/0xa9c [ 82.680592][ T5571] Modules linked in: [ 82.681168][ T5571] CPU: 0 PID: 5571 Comm: syz.0.42 Tainted: G W syzkaller #0 [ 82.682458][ T5571] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/18/2026 [ 82.683913][ T5571] pstate: 62400005 (nZCv daif +PAN -UAO +TCO -DIT -SSBS BTYPE=--) [ 82.685066][ T5571] pc : btrfs_add_link+0x718/0xa9c [ 82.685874][ T5571] lr : btrfs_add_link+0x718/0xa9c [ 82.686662][ T5571] sp : ffff800022587580 [ 82.687328][ T5571] x29: ffff800022587680 x28: ffff0000de9de8f0 x27: 0000000000000108 [ 82.688560][ T5571] x26: 00000000fffffff4 x25: 0000000000000000 x24: dfff800000000000 [ 82.689803][ T5571] x23: 0000000000000014 x22: 1fffe0001bd3bd29 x21: ffff7000044b0eb8 [ 82.691199][ T5571] x20: 00000000fffffff4 x19: ffff0000de9de948 x18: 0000000000000001 [ 82.692655][ T5571] x17: 0000000000000000 x16: ffff80001125f77c x15: 00000000ffffffff [ 82.693957][ T5571] x14: 0000000000000001 x13: 1fffe000341f05ab x12: 0000000000ff0100 [ 82.695355][ T5571] x11: 0000000000000000 x10: 0000000000000000 x9 : 317eea6b84999100 [ 82.696758][ T5571] x8 : 317eea6b84999100 x7 : 0000000000000001 x6 : 0000000000000001 [ 82.698120][ T5571] x5 : ffff800022586e98 x4 : ffff80001437f3e0 x3 : ffff80000850932c [ 82.699482][ T5571] x2 : 0000000000000001 x1 : 0000000100000000 x0 : 0000000000000026 [ 82.700806][ T5571] Call trace: [ 82.701345][ T5571] btrfs_add_link+0x718/0xa9c [ 82.702122][ T5571] btrfs_create+0x468/0x514 [ 82.702933][ T5571] path_openat+0xe18/0x2718 [ 82.703665][ T5571] do_filp_open+0x184/0x368 [ 82.704438][ T5571] do_sys_openat2+0x134/0x3f4 [ 82.705293][ T5571] __arm64_sys_openat+0x118/0x14c [ 82.706102][ T5571] invoke_syscall+0x98/0x2b0 [ 82.706905][ T5571] el0_svc_common+0x138/0x258 [ 82.707787][ T5571] do_el0_svc+0x58/0x13c [ 82.708557][ T5571] el0_svc+0x78/0x1d0 [ 82.709217][ T5571] el0t_64_sync_handler+0xcc/0xe4 [ 82.710073][ T5571] el0t_64_sync+0x1a0/0x1a4 [ 82.710818][ T5571] irq event stamp: 79984 [ 82.711591][ T5571] hardirqs last enabled at (79983): [] __up_console_sem+0xb4/0xfc [ 82.713274][ T5571] hardirqs last disabled at (79984): [] el1_dbg+0x24/0x80 [ 82.714789][ T5571] softirqs last enabled at (79964): [] handle_softirqs+0xa40/0xbe4 [ 82.716468][ T5571] softirqs last disabled at (79947): [] __irq_exit_rcu+0x240/0x43c [ 82.718170][ T5571] ---[ end trace 98df19d7dd1e49bc ]--- [ 82.720131][ T5571] BTRFS: error (device loop0) in btrfs_add_link:6776: errno=-12 Out of memory [ 82.983388][ T5593] BTRFS: device fsid ed167579-eb65-4e76-9a50-61ac97e9b59d devid 1 transid 8 /dev/loop0 scanned by syz.0.43 (5593) [ 83.097908][ T5593] FAULT_INJECTION: forcing a failure. [ 83.097908][ T5593] name failslab, interval 1, probability 0, space 0, times 0 [ 83.100174][ T5593] CPU: 1 PID: 5593 Comm: syz.0.43 Tainted: G W syzkaller #0 [ 83.101628][ T5593] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/18/2026 [ 83.103377][ T5593] Call trace: [ 83.103900][ T5593] dump_backtrace+0x0/0x458 [ 83.104656][ T5593] show_stack+0x2c/0x3c [ 83.105333][ T5593] __dump_stack+0x30/0x40 [ 83.106124][ T5593] dump_stack_lvl+0xf4/0x15c [ 83.106985][ T5593] dump_stack+0x1c/0x5c [ 83.107720][ T5593] should_fail+0x3bc/0x514 [ 83.108557][ T5593] __should_failslab+0xbc/0x10c [ 83.109481][ T5593] should_failslab+0x10/0x28 [ 83.110288][ T5593] slab_pre_alloc_hook+0x64/0xe8 [ 83.111167][ T5593] kmem_cache_alloc+0x94/0x3d4 [ 83.111989][ T5593] btrfs_alloc_path+0x5c/0x68 [ 83.112746][ T5593] btrfs_insert_dir_item+0x184/0x3e8 [ 83.113643][ T5593] btrfs_add_link+0x2b0/0xa9c [ 83.114464][ T5593] btrfs_create+0x468/0x514 [ 83.115218][ T5593] path_openat+0xe18/0x2718 [ 83.115919][ T5593] do_filp_open+0x184/0x368 [ 83.116709][ T5593] do_sys_openat2+0x134/0x3f4 [ 83.117523][ T5593] __arm64_sys_openat+0x118/0x14c [ 83.118373][ T5593] invoke_syscall+0x98/0x2b0 [ 83.119113][ T5593] el0_svc_common+0x138/0x258 [ 83.119957][ T5593] do_el0_svc+0x58/0x13c [ 83.120673][ T5593] el0_svc+0x78/0x1d0 [ 83.121671][ T5593] el0t_64_sync_handler+0xcc/0xe4 [ 83.122519][ T5593] el0t_64_sync+0x1a0/0x1a4 [ 83.124909][ T5593] ------------[ cut here ]------------ [ 83.125944][ T5593] WARNING: CPU: 0 PID: 5593 at fs/btrfs/inode.c:6776 btrfs_add_link+0x718/0xa9c [ 83.127405][ T5593] Modules linked in: [ 83.128090][ T5593] CPU: 0 PID: 5593 Comm: syz.0.43 Tainted: G W syzkaller #0 [ 83.129559][ T5593] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/18/2026 [ 83.131384][ T5593] pstate: 62400005 (nZCv daif +PAN -UAO +TCO -DIT -SSBS BTYPE=--) [ 83.132649][ T5593] pc : btrfs_add_link+0x718/0xa9c [ 83.133476][ T5593] lr : btrfs_add_link+0x718/0xa9c [ 83.134353][ T5593] sp : ffff8000226e7580 [ 83.135146][ T5593] x29: ffff8000226e7680 x28: ffff0000de9da160 x27: 0000000000000108 [ 83.136465][ T5593] x26: 00000000fffffff4 x25: 0000000000000000 x24: dfff800000000000 [ 83.137762][ T5593] x23: 0000000000000014 x22: 1fffe0001bd3b437 x21: ffff7000044dceb8 [ 83.139134][ T5593] x20: 00000000fffffff4 x19: ffff0000de9da1b8 x18: 0000000000000001 [ 83.140468][ T5593] x17: 0000000000000000 x16: ffff80001125f77c x15: 00000000ffffffff [ 83.141854][ T5593] x14: 0000000000000001 x13: 1fffe000341f05ab x12: 0000000000ff0100 [ 83.143090][ T5593] x11: 0000000000000000 x10: 0000000000000000 x9 : d5a8ab94ae5ff400 [ 83.144461][ T5593] x8 : d5a8ab94ae5ff400 x7 : 0000000000000001 x6 : 0000000000000001 [ 83.145884][ T5593] x5 : ffff8000226e6e98 x4 : ffff80001437f3e0 x3 : ffff80000850932c [ 83.147309][ T5593] x2 : 0000000000000001 x1 : 0000000100000000 x0 : 0000000000000026 [ 83.148722][ T5593] Call trace: [ 83.149299][ T5593] btrfs_add_link+0x718/0xa9c [ 83.150097][ T5593] btrfs_create+0x468/0x514 [ 83.150887][ T5593] path_openat+0xe18/0x2718 [ 83.151615][ T5593] do_filp_open+0x184/0x368 [ 83.152343][ T5593] do_sys_openat2+0x134/0x3f4 [ 83.153152][ T5593] __arm64_sys_openat+0x118/0x14c [ 83.154022][ T5593] invoke_syscall+0x98/0x2b0 [ 83.154859][ T5593] el0_svc_common+0x138/0x258 [ 83.155618][ T5593] do_el0_svc+0x58/0x13c [ 83.156318][ T5593] el0_svc+0x78/0x1d0 [ 83.156931][ T5593] el0t_64_sync_handler+0xcc/0xe4 [ 83.157704][ T5593] el0t_64_sync+0x1a0/0x1a4 [ 83.158499][ T5593] irq event stamp: 80508 [ 83.159202][ T5593] hardirqs last enabled at (80507): [] __up_console_sem+0xb4/0xfc [ 83.160844][ T5593] hardirqs last disabled at (80508): [] el1_dbg+0x24/0x80 [ 83.162242][ T5593] softirqs last enabled at (80488): [] handle_softirqs+0xa40/0xbe4 [ 83.163853][ T5593] softirqs last disabled at (80465): [] __irq_exit_rcu+0x240/0x43c [ 83.165503][ T5593] ---[ end trace 98df19d7dd1e49bd ]--- [ 83.169443][ T5593] BTRFS: error (device loop0) in btrfs_add_link:6776: errno=-12 Out of memory [ 83.400126][ T5616] BTRFS: device fsid ed167579-eb65-4e76-9a50-61ac97e9b59d devid 1 transid 8 /dev/loop0 scanned by syz.0.44 (5616) [ 83.425668][ T5616] FAULT_INJECTION: forcing a failure. [ 83.425668][ T5616] name failslab, interval 1, probability 0, space 0, times 0 [ 83.427834][ T5616] CPU: 1 PID: 5616 Comm: syz.0.44 Tainted: G W syzkaller #0 [ 83.429144][ T5616] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/18/2026 [ 83.430955][ T5616] Call trace: [ 83.431509][ T5616] dump_backtrace+0x0/0x458 [ 83.432260][ T5616] show_stack+0x2c/0x3c [ 83.432915][ T5616] __dump_stack+0x30/0x40 [ 83.433635][ T5616] dump_stack_lvl+0xf4/0x15c [ 83.434432][ T5616] dump_stack+0x1c/0x5c [ 83.435114][ T5616] should_fail+0x3bc/0x514 [ 83.435799][ T5616] __should_failslab+0xbc/0x10c [ 83.436609][ T5616] should_failslab+0x10/0x28 [ 83.437329][ T5616] slab_pre_alloc_hook+0x64/0xe8 [ 83.438074][ T5616] kmem_cache_alloc+0x94/0x3d4 [ 83.438857][ T5616] btrfs_alloc_path+0x5c/0x68 [ 83.439635][ T5616] btrfs_insert_dir_item+0x184/0x3e8 [ 83.440516][ T5616] btrfs_add_link+0x2b0/0xa9c [ 83.441303][ T5616] btrfs_create+0x468/0x514 [ 83.442070][ T5616] path_openat+0xe18/0x2718 [ 83.442772][ T5616] do_filp_open+0x184/0x368 [ 83.443563][ T5616] do_sys_openat2+0x134/0x3f4 [ 83.444405][ T5616] __arm64_sys_openat+0x118/0x14c [ 83.445232][ T5616] invoke_syscall+0x98/0x2b0 [ 83.445985][ T5616] el0_svc_common+0x138/0x258 [ 83.446743][ T5616] do_el0_svc+0x58/0x13c [ 83.447422][ T5616] el0_svc+0x78/0x1d0 [ 83.448165][ T5616] el0t_64_sync_handler+0xcc/0xe4 [ 83.449031][ T5616] el0t_64_sync+0x1a0/0x1a4 [ 83.455110][ T5616] ------------[ cut here ]------------ [ 83.456133][ T5616] WARNING: CPU: 1 PID: 5616 at fs/btrfs/inode.c:6776 btrfs_add_link+0x718/0xa9c [ 83.457593][ T5616] Modules linked in: [ 83.458257][ T5616] CPU: 1 PID: 5616 Comm: syz.0.44 Tainted: G W syzkaller #0 [ 83.459761][ T5616] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/18/2026 [ 83.461589][ T5616] pstate: 62400005 (nZCv daif +PAN -UAO +TCO -DIT -SSBS BTYPE=--) [ 83.462930][ T5616] pc : btrfs_add_link+0x718/0xa9c [ 83.463729][ T5616] lr : btrfs_add_link+0x718/0xa9c [ 83.464558][ T5616] sp : ffff800022107580 [ 83.465216][ T5616] x29: ffff800022107680 x28: ffff0000de9da000 x27: 0000000000000108 [ 83.466632][ T5616] x26: 00000000fffffff4 x25: 0000000000000000 x24: dfff800000000000 [ 83.468091][ T5616] x23: 0000000000000014 x22: 1fffe0001bd3b40b x21: ffff700004420eb8 [ 83.469506][ T5616] x20: 00000000fffffff4 x19: ffff0000de9da058 x18: 0000000000000001 [ 83.470876][ T5616] x17: 0000000000000000 x16: ffff80001125f77c x15: 00000000ffffffff [ 83.472323][ T5616] x14: 0000000000000001 x13: 1fffe000341f47ab x12: 0000000000ff0100 [ 83.473721][ T5616] x11: 0000000000000000 x10: 0000000000000000 x9 : 43a65c3422525900 [ 83.475110][ T5616] x8 : 43a65c3422525900 x7 : 0000000000000001 x6 : 0000000000000001 [ 83.476511][ T5616] x5 : ffff800022106e98 x4 : ffff80001437f3e0 x3 : ffff80000850932c [ 83.477915][ T5616] x2 : 0000000000000001 x1 : 0000000100000000 x0 : 0000000000000026 [ 83.479228][ T5616] Call trace: [ 83.479746][ T5616] btrfs_add_link+0x718/0xa9c [ 83.480529][ T5616] btrfs_create+0x468/0x514 [ 83.481242][ T5616] path_openat+0xe18/0x2718 [ 83.481996][ T5616] do_filp_open+0x184/0x368 [ 83.482740][ T5616] do_sys_openat2+0x134/0x3f4 [ 83.483504][ T5616] __arm64_sys_openat+0x118/0x14c [ 83.484320][ T5616] invoke_syscall+0x98/0x2b0 [ 83.485125][ T5616] el0_svc_common+0x138/0x258 [ 83.485885][ T5616] do_el0_svc+0x58/0x13c [ 83.486587][ T5616] el0_svc+0x78/0x1d0 [ 83.487268][ T5616] el0t_64_sync_handler+0xcc/0xe4 [ 83.488140][ T5616] el0t_64_sync+0x1a0/0x1a4 [ 83.488906][ T5616] irq event stamp: 79478 [ 83.489624][ T5616] hardirqs last enabled at (79477): [] __up_console_sem+0xb4/0xfc [ 83.491270][ T5616] hardirqs last disabled at (79478): [] el1_dbg+0x24/0x80 [ 83.492706][ T5616] softirqs last enabled at (79458): [] handle_softirqs+0xa40/0xbe4 [ 83.494288][ T5616] softirqs last disabled at (79423): [] __irq_exit_rcu+0x240/0x43c [ 83.495923][ T5616] ---[ end trace 98df19d7dd1e49be ]--- [ 83.498924][ T5616] BTRFS: error (device loop0) in btrfs_add_link:6776: errno=-12 Out of memory [ 83.716058][ T5638] BTRFS: device fsid ed167579-eb65-4e76-9a50-61ac97e9b59d devid 1 transid 8 /dev/loop0 scanned by syz.0.45 (5638) [ 83.736769][ T5638] FAULT_INJECTION: forcing a failure. [ 83.736769][ T5638] name failslab, interval 1, probability 0, space 0, times 0 [ 83.739241][ T5638] CPU: 1 PID: 5638 Comm: syz.0.45 Tainted: G W syzkaller #0 [ 83.740624][ T5638] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/18/2026 [ 83.742300][ T5638] Call trace: [ 83.742866][ T5638] dump_backtrace+0x0/0x458 [ 83.743599][ T5638] show_stack+0x2c/0x3c [ 83.744294][ T5638] __dump_stack+0x30/0x40 [ 83.745118][ T5638] dump_stack_lvl+0xf4/0x15c [ 83.746028][ T5638] dump_stack+0x1c/0x5c [ 83.746776][ T5638] should_fail+0x3bc/0x514 [ 83.747594][ T5638] __should_failslab+0xbc/0x10c [ 83.748458][ T5638] should_failslab+0x10/0x28 [ 83.749154][ T5638] slab_pre_alloc_hook+0x64/0xe8 [ 83.749993][ T5638] kmem_cache_alloc+0x94/0x3d4 [ 83.750763][ T5638] btrfs_get_or_create_delayed_node+0x114/0x4a8 [ 83.751825][ T5638] btrfs_delayed_update_inode+0x3c/0x1b68 [ 83.752817][ T5638] btrfs_update_inode+0x210/0x3d4 [ 83.753639][ T5638] btrfs_create+0x364/0x514 [ 83.754374][ T5638] path_openat+0xe18/0x2718 [ 83.755107][ T5638] do_filp_open+0x184/0x368 [ 83.755922][ T5638] do_sys_openat2+0x134/0x3f4 [ 83.756733][ T5638] __arm64_sys_openat+0x118/0x14c [ 83.757533][ T5638] invoke_syscall+0x98/0x2b0 [ 83.758475][ T5638] el0_svc_common+0x138/0x258 [ 83.759229][ T5638] do_el0_svc+0x58/0x13c [ 83.759915][ T5638] el0_svc+0x78/0x1d0 [ 83.760559][ T5638] el0t_64_sync_handler+0xcc/0xe4 [ 83.761383][ T5638] el0t_64_sync+0x1a0/0x1a4 [ 83.986195][ T5660] BTRFS: device fsid ed167579-eb65-4e76-9a50-61ac97e9b59d devid 1 transid 8 /dev/loop0 scanned by syz.0.46 (5660) [ 84.004394][ T5660] FAULT_INJECTION: forcing a failure. [ 84.004394][ T5660] name failslab, interval 1, probability 0, space 0, times 0 [ 84.006668][ T5660] CPU: 0 PID: 5660 Comm: syz.0.46 Tainted: G W syzkaller #0 [ 84.008048][ T5660] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/18/2026 [ 84.009740][ T5660] Call trace: [ 84.010250][ T5660] dump_backtrace+0x0/0x458 [ 84.010962][ T5660] show_stack+0x2c/0x3c [ 84.011661][ T5660] __dump_stack+0x30/0x40 [ 84.012423][ T5660] dump_stack_lvl+0xf4/0x15c [ 84.013229][ T5660] dump_stack+0x1c/0x5c [ 84.013960][ T5660] should_fail+0x3bc/0x514 [ 84.014749][ T5660] __should_failslab+0xbc/0x10c [ 84.015616][ T5660] should_failslab+0x10/0x28 [ 84.016387][ T5660] slab_pre_alloc_hook+0x64/0xe8 [ 84.017206][ T5660] kmem_cache_alloc+0x94/0x3d4 [ 84.018024][ T5660] btrfs_alloc_path+0x5c/0x68 [ 84.018841][ T5660] btrfs_insert_dir_item+0x184/0x3e8 [ 84.019718][ T5660] btrfs_add_link+0x2b0/0xa9c [ 84.020443][ T5660] btrfs_create+0x468/0x514 [ 84.021222][ T5660] path_openat+0xe18/0x2718 [ 84.022031][ T5660] do_filp_open+0x184/0x368 [ 84.022791][ T5660] do_sys_openat2+0x134/0x3f4 [ 84.023628][ T5660] __arm64_sys_openat+0x118/0x14c [ 84.024448][ T5660] invoke_syscall+0x98/0x2b0 [ 84.025254][ T5660] el0_svc_common+0x138/0x258 [ 84.025988][ T5660] do_el0_svc+0x58/0x13c [ 84.026652][ T5660] el0_svc+0x78/0x1d0 [ 84.027328][ T5660] el0t_64_sync_handler+0xcc/0xe4 [ 84.028204][ T5660] el0t_64_sync+0x1a0/0x1a4 [ 84.029235][ T5660] ------------[ cut here ]------------ [ 84.030222][ T5660] WARNING: CPU: 0 PID: 5660 at fs/btrfs/inode.c:6776 btrfs_add_link+0x718/0xa9c [ 84.031701][ T5660] Modules linked in: [ 84.032353][ T5660] CPU: 0 PID: 5660 Comm: syz.0.46 Tainted: G W syzkaller #0 [ 84.033740][ T5660] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/18/2026 [ 84.035443][ T5660] pstate: 62400005 (nZCv daif +PAN -UAO +TCO -DIT -SSBS BTYPE=--) [ 84.036697][ T5660] pc : btrfs_add_link+0x718/0xa9c [ 84.037556][ T5660] lr : btrfs_add_link+0x718/0xa9c [ 84.038383][ T5660] sp : ffff800022107580 [ 84.039068][ T5660] x29: ffff800022107680 x28: ffff0000de9de790 x27: 0000000000000108 [ 84.040495][ T5660] x26: 00000000fffffff4 x25: 0000000000000000 x24: dfff800000000000 [ 84.041933][ T5660] x23: 0000000000000014 x22: 1fffe0001bd3bcfd x21: ffff700004420eb8 [ 84.043314][ T5660] x20: 00000000fffffff4 x19: ffff0000de9de7e8 x18: 0000000000000001 [ 84.044808][ T5660] x17: 0000000000000000 x16: ffff800008304c04 x15: 00000000ffffffff [ 84.046154][ T5660] x14: 0000000000000001 x13: 1ffff00004420dd0 x12: 0000000000ff0100 [ 84.047603][ T5660] x11: 0000000000000000 x10: 0000000000000000 x9 : 09ab6ad993882f00 [ 84.048957][ T5660] x8 : 09ab6ad993882f00 x7 : 0000000000000001 x6 : 0000000000000001 [ 84.050300][ T5660] x5 : ffff800022106e98 x4 : ffff80001437f3e0 x3 : ffff800008304d14 [ 84.051800][ T5660] x2 : 0000000000000001 x1 : 0000000100000000 x0 : 0000000000000026 [ 84.053236][ T5660] Call trace: [ 84.053786][ T5660] btrfs_add_link+0x718/0xa9c [ 84.054613][ T5660] btrfs_create+0x468/0x514 [ 84.055370][ T5660] path_openat+0xe18/0x2718 [ 84.056212][ T5660] do_filp_open+0x184/0x368 [ 84.056992][ T5660] do_sys_openat2+0x134/0x3f4 [ 84.057829][ T5660] __arm64_sys_openat+0x118/0x14c [ 84.058672][ T5660] invoke_syscall+0x98/0x2b0 [ 84.059457][ T5660] el0_svc_common+0x138/0x258 [ 84.060203][ T5660] do_el0_svc+0x58/0x13c [ 84.060920][ T5660] el0_svc+0x78/0x1d0 [ 84.061538][ T5660] el0t_64_sync_handler+0xcc/0xe4 [ 84.062344][ T5660] el0t_64_sync+0x1a0/0x1a4 [ 84.063122][ T5660] irq event stamp: 79648 [ 84.063877][ T5660] hardirqs last enabled at (79647): [] __up_console_sem+0xb4/0xfc [ 84.065535][ T5660] hardirqs last disabled at (79648): [] el1_dbg+0x24/0x80 [ 84.067012][ T5660] softirqs last enabled at (79628): [] handle_softirqs+0xa40/0xbe4 [ 84.068664][ T5660] softirqs last disabled at (79609): [] __irq_exit_rcu+0x240/0x43c [ 84.070282][ T5660] ---[ end trace 98df19d7dd1e49bf ]--- [ 84.071850][ T5660] BTRFS: error (device loop0) in btrfs_add_link:6776: errno=-12 Out of memory [ 84.217389][ T5682] BTRFS: device fsid ed167579-eb65-4e76-9a50-61ac97e9b59d devid 1 transid 8 /dev/loop0 scanned by syz.0.47 (5682) [ 84.250357][ T5682] FAULT_INJECTION: forcing a failure. [ 84.250357][ T5682] name failslab, interval 1, probability 0, space 0, times 0 [ 84.252581][ T5682] CPU: 0 PID: 5682 Comm: syz.0.47 Tainted: G W syzkaller #0 [ 84.253967][ T5682] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/18/2026 [ 84.255617][ T5682] Call trace: [ 84.256167][ T5682] dump_backtrace+0x0/0x458 [ 84.256913][ T5682] show_stack+0x2c/0x3c [ 84.257583][ T5682] __dump_stack+0x30/0x40 [ 84.258303][ T5682] dump_stack_lvl+0xf4/0x15c [ 84.259146][ T5682] dump_stack+0x1c/0x5c [ 84.259907][ T5682] should_fail+0x3bc/0x514 [ 84.260702][ T5682] __should_failslab+0xbc/0x10c [ 84.261525][ T5682] should_failslab+0x10/0x28 [ 84.262296][ T5682] slab_pre_alloc_hook+0x64/0xe8 [ 84.263144][ T5682] kmem_cache_alloc+0x94/0x3d4 [ 84.263977][ T5682] btrfs_alloc_path+0x5c/0x68 [ 84.264718][ T5682] btrfs_insert_dir_item+0x184/0x3e8 [ 84.265616][ T5682] btrfs_add_link+0x2b0/0xa9c [ 84.266438][ T5682] btrfs_create+0x468/0x514 [ 84.267161][ T5682] path_openat+0xe18/0x2718 [ 84.267894][ T5682] do_filp_open+0x184/0x368 [ 84.268652][ T5682] do_sys_openat2+0x134/0x3f4 [ 84.269491][ T5682] __arm64_sys_openat+0x118/0x14c [ 84.270353][ T5682] invoke_syscall+0x98/0x2b0 [ 84.271084][ T5682] el0_svc_common+0x138/0x258 [ 84.271852][ T5682] do_el0_svc+0x58/0x13c [ 84.272551][ T5682] el0_svc+0x78/0x1d0 [ 84.273235][ T5682] el0t_64_sync_handler+0xcc/0xe4 [ 84.274093][ T5682] el0t_64_sync+0x1a0/0x1a4 [ 84.275719][ T5682] ------------[ cut here ]------------ [ 84.276780][ T5682] WARNING: CPU: 0 PID: 5682 at fs/btrfs/inode.c:6776 btrfs_add_link+0x718/0xa9c [ 84.278184][ T5682] Modules linked in: [ 84.278842][ T5682] CPU: 0 PID: 5682 Comm: syz.0.47 Tainted: G W syzkaller #0 [ 84.280309][ T5682] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/18/2026 [ 84.282119][ T5682] pstate: 62400005 (nZCv daif +PAN -UAO +TCO -DIT -SSBS BTYPE=--) [ 84.283415][ T5682] pc : btrfs_add_link+0x718/0xa9c [ 84.284246][ T5682] lr : btrfs_add_link+0x718/0xa9c [ 84.285134][ T5682] sp : ffff800022e77580 [ 84.285884][ T5682] x29: ffff800022e77680 x28: ffff0000de9dec60 x27: 0000000000000108 [ 84.287395][ T5682] x26: 00000000fffffff4 x25: 0000000000000000 x24: dfff800000000000 [ 84.288730][ T5682] x23: 0000000000000014 x22: 1fffe0001bd3bd97 x21: ffff7000045ceeb8 [ 84.289922][ T5682] x20: 00000000fffffff4 x19: ffff0000de9decb8 x18: 0000000000000001 [ 84.291129][ T5682] x17: 0000000000000000 x16: ffff80001125f77c x15: 00000000ffffffff [ 84.292485][ T5682] x14: 0000000000000001 x13: 1fffe000341f05ab x12: 0000000000ff0100 [ 84.293806][ T5682] x11: 0000000000000000 x10: 0000000000000000 x9 : 0fdc4dd54d906400 [ 84.295194][ T5682] x8 : 0fdc4dd54d906400 x7 : 0000000000000001 x6 : 0000000000000001 [ 84.296561][ T5682] x5 : ffff800022e76e98 x4 : ffff80001437f3e0 x3 : ffff80000850932c [ 84.297949][ T5682] x2 : 0000000000000001 x1 : 0000000100000000 x0 : 0000000000000026 [ 84.299317][ T5682] Call trace: [ 84.299873][ T5682] btrfs_add_link+0x718/0xa9c [ 84.300639][ T5682] btrfs_create+0x468/0x514 [ 84.301406][ T5682] path_openat+0xe18/0x2718 [ 84.302166][ T5682] do_filp_open+0x184/0x368 [ 84.302863][ T5682] do_sys_openat2+0x134/0x3f4 [ 84.303659][ T5682] __arm64_sys_openat+0x118/0x14c [ 84.304489][ T5682] invoke_syscall+0x98/0x2b0 [ 84.305278][ T5682] el0_svc_common+0x138/0x258 [ 84.306081][ T5682] do_el0_svc+0x58/0x13c [ 84.306809][ T5682] el0_svc+0x78/0x1d0 [ 84.307465][ T5682] el0t_64_sync_handler+0xcc/0xe4 [ 84.308318][ T5682] el0t_64_sync+0x1a0/0x1a4 [ 84.309118][ T5682] irq event stamp: 79936 [ 84.309859][ T5682] hardirqs last enabled at (79935): [] __up_console_sem+0xb4/0xfc [ 84.311411][ T5682] hardirqs last disabled at (79936): [] el1_dbg+0x24/0x80 [ 84.312850][ T5682] softirqs last enabled at (79912): [] handle_softirqs+0xa40/0xbe4 [ 84.314480][ T5682] softirqs last disabled at (79871): [] __irq_exit_rcu+0x240/0x43c [ 84.316149][ T5682] ---[ end trace 98df19d7dd1e49c0 ]--- [ 84.318317][ T5682] BTRFS: error (device loop0) in btrfs_add_link:6776: errno=-12 Out of memory [ 84.556409][ T5704] BTRFS: device fsid ed167579-eb65-4e76-9a50-61ac97e9b59d devid 1 transid 8 /dev/loop0 scanned by syz.0.48 (5704) [ 84.586836][ T5704] FAULT_INJECTION: forcing a failure. [ 84.586836][ T5704] name failslab, interval 1, probability 0, space 0, times 0 [ 84.589100][ T5704] CPU: 1 PID: 5704 Comm: syz.0.48 Tainted: G W syzkaller #0 [ 84.590549][ T5704] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/18/2026 [ 84.592311][ T5704] Call trace: [ 84.592891][ T5704] dump_backtrace+0x0/0x458 [ 84.593682][ T5704] show_stack+0x2c/0x3c [ 84.594370][ T5704] __dump_stack+0x30/0x40 [ 84.595132][ T5704] dump_stack_lvl+0xf4/0x15c [ 84.595918][ T5704] dump_stack+0x1c/0x5c [ 84.596580][ T5704] should_fail+0x3bc/0x514 [ 84.597385][ T5704] __should_failslab+0xbc/0x10c [ 84.598218][ T5704] should_failslab+0x10/0x28 [ 84.598998][ T5704] slab_pre_alloc_hook+0x64/0xe8 [ 84.599868][ T5704] kmem_cache_alloc+0x94/0x3d4 [ 84.600680][ T5704] btrfs_alloc_path+0x5c/0x68 [ 84.601455][ T5704] btrfs_insert_dir_item+0x184/0x3e8 [ 84.602345][ T5704] btrfs_add_link+0x2b0/0xa9c [ 84.603165][ T5704] btrfs_create+0x468/0x514 [ 84.603993][ T5704] path_openat+0xe18/0x2718 [ 84.604769][ T5704] do_filp_open+0x184/0x368 [ 84.605554][ T5704] do_sys_openat2+0x134/0x3f4 [ 84.606390][ T5704] __arm64_sys_openat+0x118/0x14c [ 84.607289][ T5704] invoke_syscall+0x98/0x2b0 [ 84.608062][ T5704] el0_svc_common+0x138/0x258 [ 84.608828][ T5704] do_el0_svc+0x58/0x13c [ 84.609525][ T5704] el0_svc+0x78/0x1d0 [ 84.610181][ T5704] el0t_64_sync_handler+0xcc/0xe4 [ 84.611037][ T5704] el0t_64_sync+0x1a0/0x1a4 [ 84.614134][ T5704] ------------[ cut here ]------------ [ 84.615158][ T5704] WARNING: CPU: 1 PID: 5704 at fs/btrfs/inode.c:6776 btrfs_add_link+0x718/0xa9c [ 84.616646][ T5704] Modules linked in: [ 84.617288][ T5704] CPU: 1 PID: 5704 Comm: syz.0.48 Tainted: G W syzkaller #0 [ 84.618705][ T5704] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/18/2026 [ 84.620284][ T5704] pstate: 62400005 (nZCv daif +PAN -UAO +TCO -DIT -SSBS BTYPE=--) [ 84.621407][ T5704] pc : btrfs_add_link+0x718/0xa9c [ 84.622195][ T5704] lr : btrfs_add_link+0x718/0xa9c [ 84.623051][ T5704] sp : ffff800022b27580 [ 84.623763][ T5704] x29: ffff800022b27680 x28: ffff0000dd2e9630 x27: 0000000000000108 [ 84.625082][ T5704] x26: 00000000fffffff4 x25: 0000000000000000 x24: dfff800000000000 [ 84.626390][ T5704] x23: 0000000000000014 x22: 1fffe0001ba5d2d1 x21: ffff700004564eb8 [ 84.627768][ T5704] x20: 00000000fffffff4 x19: ffff0000dd2e9688 x18: 0000000000000001 [ 84.629048][ T5704] x17: 0000000000000000 x16: ffff80001125f77c x15: 00000000ffffffff [ 84.630331][ T5704] x14: 0000000000000001 x13: 1fffe000341f47ab x12: 0000000000ff0100 [ 84.631797][ T5704] x11: 0000000000000000 x10: 0000000000000000 x9 : 10a305d393a46200 [ 84.633253][ T5704] x8 : 10a305d393a46200 x7 : 0000000000000001 x6 : 0000000000000001 [ 84.634675][ T5704] x5 : ffff800022b26e98 x4 : ffff80001437f3e0 x3 : ffff80000850932c [ 84.636075][ T5704] x2 : 0000000000000001 x1 : 0000000100000000 x0 : 0000000000000026 [ 84.637443][ T5704] Call trace: [ 84.638047][ T5704] btrfs_add_link+0x718/0xa9c [ 84.638855][ T5704] btrfs_create+0x468/0x514 [ 84.639601][ T5704] path_openat+0xe18/0x2718 [ 84.640396][ T5704] do_filp_open+0x184/0x368 [ 84.641161][ T5704] do_sys_openat2+0x134/0x3f4 [ 84.641961][ T5704] __arm64_sys_openat+0x118/0x14c [ 84.642788][ T5704] invoke_syscall+0x98/0x2b0 [ 84.643576][ T5704] el0_svc_common+0x138/0x258 [ 84.644424][ T5704] do_el0_svc+0x58/0x13c [ 84.645133][ T5704] el0_svc+0x78/0x1d0 [ 84.645813][ T5704] el0t_64_sync_handler+0xcc/0xe4 [ 84.646685][ T5704] el0t_64_sync+0x1a0/0x1a4 [ 84.647481][ T5704] irq event stamp: 79746 [ 84.648214][ T5704] hardirqs last enabled at (79745): [] __up_console_sem+0xb4/0xfc [ 84.649814][ T5704] hardirqs last disabled at (79746): [] el1_dbg+0x24/0x80 [ 84.651360][ T5704] softirqs last enabled at (79736): [] handle_softirqs+0xa40/0xbe4 [ 84.652995][ T5704] softirqs last disabled at (79727): [] __irq_exit_rcu+0x240/0x43c [ 84.654603][ T5704] ---[ end trace 98df19d7dd1e49c1 ]--- [ 84.657837][ T5704] BTRFS: error (device loop0) in btrfs_add_link:6776: errno=-12 Out of memory 1970/01/01 00:01:24 executed programs: 36