Warning: Permanently added '10.128.1.64' (ED25519) to the list of known hosts. 1970/01/01 00:01:02 ignoring optional flag "type"="gce" 1970/01/01 00:01:03 parsed 1 programs [ 64.278857][ T4333] Adding 124996k swap on ./swap-file. Priority:0 extents:1 across:124996k SSFS [ 65.300716][ T136] wlan0: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 65.301976][ T136] wlan0: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 65.306604][ T136] IPv6: ADDRCONF(NETDEV_CHANGE): wlan0: link becomes ready [ 65.316891][ T350] wlan1: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 65.318590][ T350] wlan1: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 65.320012][ T1703] IPv6: ADDRCONF(NETDEV_CHANGE): wlan1: link becomes ready [ 65.495840][ T4464] chnl_net:caif_netlink_parms(): no params data found [ 65.514432][ T4464] bridge0: port 1(bridge_slave_0) entered blocking state [ 65.515673][ T4464] bridge0: port 1(bridge_slave_0) entered disabled state [ 65.517155][ T4464] device bridge_slave_0 entered promiscuous mode [ 65.519643][ T4464] bridge0: port 2(bridge_slave_1) entered blocking state [ 65.520923][ T4464] bridge0: port 2(bridge_slave_1) entered disabled state [ 65.522393][ T4464] device bridge_slave_1 entered promiscuous mode [ 65.530320][ T4464] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 65.532802][ T4464] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 65.542085][ T4464] team0: Port device team_slave_0 added [ 65.544149][ T4464] team0: Port device team_slave_1 added [ 65.550564][ T4464] batman_adv: batadv0: Adding interface: batadv_slave_0 [ 65.551723][ T4464] 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. [ 65.556059][ T4464] batman_adv: batadv0: Not using interface batadv_slave_0 (retrying later): interface not active [ 65.558972][ T4464] batman_adv: batadv0: Adding interface: batadv_slave_1 [ 65.560089][ T4464] 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. [ 65.564334][ T4464] batman_adv: batadv0: Not using interface batadv_slave_1 (retrying later): interface not active [ 65.609082][ T4464] device hsr_slave_0 entered promiscuous mode [ 65.658165][ T4464] device hsr_slave_1 entered promiscuous mode [ 66.280474][ T4464] netdevsim netdevsim0 netdevsim0: renamed from eth0 [ 66.318948][ T4464] netdevsim netdevsim0 netdevsim1: renamed from eth1 [ 66.368830][ T4464] netdevsim netdevsim0 netdevsim2: renamed from eth2 [ 66.418478][ T4464] netdevsim netdevsim0 netdevsim3: renamed from eth3 [ 66.498042][ T4464] 8021q: adding VLAN 0 to HW filter on device bond0 [ 66.501601][ T136] IPv6: ADDRCONF(NETDEV_CHANGE): veth1: link becomes ready [ 66.503045][ T136] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 66.509138][ T4464] 8021q: adding VLAN 0 to HW filter on device team0 [ 66.513514][ T136] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bridge: link becomes ready [ 66.515220][ T136] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 66.516760][ T136] bridge0: port 1(bridge_slave_0) entered blocking state [ 66.517900][ T136] bridge0: port 1(bridge_slave_0) entered forwarding state [ 66.527200][ T136] IPv6: ADDRCONF(NETDEV_CHANGE): bridge0: link becomes ready [ 66.530898][ T136] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bridge: link becomes ready [ 66.532520][ T136] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 66.534080][ T136] bridge0: port 2(bridge_slave_1) entered blocking state [ 66.535277][ T136] bridge0: port 2(bridge_slave_1) entered forwarding state [ 66.537767][ T136] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bond: link becomes ready [ 66.542566][ T1703] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bond: link becomes ready [ 66.544341][ T1703] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_team: link becomes ready [ 66.546060][ T1703] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 66.561264][ T4464] hsr0: Slave A (hsr_slave_0) is not up; please bring it up to get a fully working HSR network [ 66.562932][ T4464] hsr0: Slave B (hsr_slave_1) is not up; please bring it up to get a fully working HSR network [ 66.565711][ T1703] IPv6: ADDRCONF(NETDEV_CHANGE): team0: link becomes ready [ 66.567250][ T1703] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_team: link becomes ready [ 66.570174][ T1703] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 66.571706][ T1703] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_hsr: link becomes ready [ 66.573136][ T1703] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 66.574751][ T1703] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_hsr: link becomes ready [ 66.576229][ T1703] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 66.580305][ T1703] IPv6: ADDRCONF(NETDEV_CHANGE): hsr0: link becomes ready [ 66.620429][ T350] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan1: link becomes ready [ 66.621704][ T350] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan0: link becomes ready [ 66.624781][ T4464] 8021q: adding VLAN 0 to HW filter on device batadv0 [ 66.632367][ T350] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_virt_wifi: link becomes ready [ 66.633895][ T350] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_virt_wifi: link becomes ready [ 66.640873][ T350] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_vlan: link becomes ready [ 66.642400][ T350] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_vlan: link becomes ready [ 66.643949][ T350] IPv6: ADDRCONF(NETDEV_CHANGE): vlan0: link becomes ready [ 66.645302][ T350] IPv6: ADDRCONF(NETDEV_CHANGE): vlan1: link becomes ready [ 66.647794][ T4464] device veth0_vlan entered promiscuous mode [ 66.652136][ T4464] device veth1_vlan entered promiscuous mode [ 66.659570][ T350] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan0: link becomes ready [ 66.661104][ T350] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan1: link becomes ready [ 66.662543][ T350] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_macvtap: link becomes ready [ 66.664057][ T350] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_macvtap: link becomes ready [ 66.666707][ T4464] device veth0_macvtap entered promiscuous mode [ 66.669433][ T4464] device veth1_macvtap entered promiscuous mode [ 66.674757][ T4464] batman_adv: batadv0: Interface activated: batadv_slave_0 [ 66.676026][ T1703] IPv6: ADDRCONF(NETDEV_CHANGE): macvtap0: link becomes ready [ 66.677703][ T1703] IPv6: ADDRCONF(NETDEV_CHANGE): macsec0: link becomes ready [ 66.680548][ T1703] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_0: link becomes ready [ 66.682270][ T1703] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_batadv: link becomes ready [ 66.685421][ T4464] batman_adv: batadv0: Interface activated: batadv_slave_1 [ 66.687594][ T4464] netdevsim netdevsim0 netdevsim0: set [1, 0] type 2 family 0 port 6081 - 0 [ 66.689167][ T4464] netdevsim netdevsim0 netdevsim1: set [1, 0] type 2 family 0 port 6081 - 0 [ 66.690633][ T4464] netdevsim netdevsim0 netdevsim2: set [1, 0] type 2 family 0 port 6081 - 0 [ 66.691991][ T4464] netdevsim netdevsim0 netdevsim3: set [1, 0] type 2 family 0 port 6081 - 0 [ 66.694332][ T350] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_1: link becomes ready [ 66.695929][ T350] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_batadv: link becomes ready [ 67.001294][ T1707] netdevsim netdevsim0 netdevsim3 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 69.599672][ T7] cfg80211: failed to load regulatory.db [ 69.601546][ T2064] ieee802154 phy0 wpan0: encryption failed: -22 [ 69.602690][ T2064] ieee802154 phy1 wpan1: encryption failed: -22 [ 70.010764][ T1707] netdevsim netdevsim0 netdevsim2 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 72.250716][ T1707] netdevsim netdevsim0 netdevsim1 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 72.291754][ T1707] netdevsim netdevsim0 netdevsim0 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 1970/01/01 00:01:12 executed programs: 0 [ 72.623753][ T4851] chnl_net:caif_netlink_parms(): no params data found [ 72.641308][ T4851] bridge0: port 1(bridge_slave_0) entered blocking state [ 72.642458][ T4851] bridge0: port 1(bridge_slave_0) entered disabled state [ 72.643937][ T4851] device bridge_slave_0 entered promiscuous mode [ 72.645900][ T4851] bridge0: port 2(bridge_slave_1) entered blocking state [ 72.646981][ T4851] bridge0: port 2(bridge_slave_1) entered disabled state [ 72.648655][ T4851] device bridge_slave_1 entered promiscuous mode [ 72.656127][ T4851] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 72.658862][ T4851] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 72.666509][ T4851] team0: Port device team_slave_0 added [ 72.669111][ T4851] team0: Port device team_slave_1 added [ 72.677971][ T4851] batman_adv: batadv0: Adding interface: batadv_slave_0 [ 72.679116][ T4851] batman_adv: batadv0: The MTU of interface batadv_slave_0 is too small (1500) to handle the transport of batman-adv packets. Packets going over this interface will be fragmented on layer2 which could impact the performance. Setting the MTU to 1560 would solve the problem. [ 72.683144][ T4851] batman_adv: batadv0: Not using interface batadv_slave_0 (retrying later): interface not active [ 72.685507][ T4851] batman_adv: batadv0: Adding interface: batadv_slave_1 [ 72.686604][ T4851] batman_adv: batadv0: The MTU of interface batadv_slave_1 is too small (1500) to handle the transport of batman-adv packets. Packets going over this interface will be fragmented on layer2 which could impact the performance. Setting the MTU to 1560 would solve the problem. [ 72.691171][ T4851] batman_adv: batadv0: Not using interface batadv_slave_1 (retrying later): interface not active [ 72.739127][ T4851] device hsr_slave_0 entered promiscuous mode [ 72.778082][ T4851] device hsr_slave_1 entered promiscuous mode [ 72.817957][ T4851] debugfs: Directory 'hsr0' with parent 'hsr' already present! [ 72.819100][ T4851] Cannot create hsr debugfs directory [ 73.227172][ T4851] netdevsim netdevsim0 netdevsim0: renamed from eth0 [ 73.269032][ T4851] netdevsim netdevsim0 netdevsim1: renamed from eth1 [ 73.299040][ T4851] netdevsim netdevsim0 netdevsim2: renamed from eth2 [ 73.340118][ T4851] netdevsim netdevsim0 netdevsim3: renamed from eth3 [ 73.383210][ T4851] bridge0: port 2(bridge_slave_1) entered blocking state [ 73.384351][ T4851] bridge0: port 2(bridge_slave_1) entered forwarding state [ 73.385591][ T4851] bridge0: port 1(bridge_slave_0) entered blocking state [ 73.386718][ T4851] bridge0: port 1(bridge_slave_0) entered forwarding state [ 73.404856][ T4851] 8021q: adding VLAN 0 to HW filter on device bond0 [ 73.409780][ T1703] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 73.411581][ T1703] bridge0: port 1(bridge_slave_0) entered disabled state [ 73.413218][ T1703] bridge0: port 2(bridge_slave_1) entered disabled state [ 73.415053][ T1703] IPv6: ADDRCONF(NETDEV_CHANGE): bond0: link becomes ready [ 73.420186][ T4851] 8021q: adding VLAN 0 to HW filter on device team0 [ 73.423790][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 73.425299][ T9] bridge0: port 1(bridge_slave_0) entered blocking state [ 73.426443][ T9] bridge0: port 1(bridge_slave_0) entered forwarding state [ 73.431455][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 73.433028][ T9] bridge0: port 2(bridge_slave_1) entered blocking state [ 73.434248][ T9] bridge0: port 2(bridge_slave_1) entered forwarding state [ 73.457644][ T4851] hsr0: Slave A (hsr_slave_0) is not up; please bring it up to get a fully working HSR network [ 73.460495][ T4851] hsr0: Slave B (hsr_slave_1) is not up; please bring it up to get a fully working HSR network [ 73.464041][ T1703] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 73.465745][ T1703] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 73.467418][ T1703] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 73.470988][ T1703] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 73.474690][ T1703] IPv6: ADDRCONF(NETDEV_CHANGE): hsr0: link becomes ready [ 73.476167][ T1703] IPv6: ADDRCONF(NETDEV_CHANGE): team0: link becomes ready [ 73.515895][ T4851] 8021q: adding VLAN 0 to HW filter on device batadv0 [ 73.518420][ T350] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan0: link becomes ready [ 73.519868][ T350] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan1: link becomes ready [ 73.526572][ T350] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_virt_wifi: link becomes ready [ 73.540098][ T350] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_vlan: link becomes ready [ 73.542140][ T350] IPv6: ADDRCONF(NETDEV_CHANGE): vlan0: link becomes ready [ 73.543543][ T350] IPv6: ADDRCONF(NETDEV_CHANGE): vlan1: link becomes ready [ 73.545925][ T4851] device veth0_vlan entered promiscuous mode [ 73.550523][ T4851] device veth1_vlan entered promiscuous mode [ 73.559530][ T4851] device veth0_macvtap entered promiscuous mode [ 73.561177][ T350] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan0: link becomes ready [ 73.562699][ T350] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan1: link becomes ready [ 73.564329][ T350] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_macvtap: link becomes ready [ 73.565971][ T350] IPv6: ADDRCONF(NETDEV_CHANGE): macvtap0: link becomes ready [ 73.568784][ T4851] device veth1_macvtap entered promiscuous mode [ 73.573679][ T4851] batman_adv: The newly added mac address (aa:aa:aa:aa:aa:3e) already exists on: batadv_slave_0 [ 73.575259][ T4851] batman_adv: It is strongly recommended to keep mac addresses unique to avoid problems! [ 73.577473][ T4851] batman_adv: batadv0: Interface activated: batadv_slave_0 [ 73.579564][ T350] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_batadv: link becomes ready [ 73.582837][ T4851] batman_adv: The newly added mac address (aa:aa:aa:aa:aa:3f) already exists on: batadv_slave_1 [ 73.584491][ T4851] batman_adv: It is strongly recommended to keep mac addresses unique to avoid problems! [ 73.586759][ T4851] batman_adv: batadv0: Interface activated: batadv_slave_1 [ 73.589013][ T350] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_batadv: link becomes ready [ 73.591025][ T4851] netdevsim netdevsim0 netdevsim0: set [1, 0] type 2 family 0 port 6081 - 0 [ 73.592436][ T4851] netdevsim netdevsim0 netdevsim1: set [1, 0] type 2 family 0 port 6081 - 0 [ 73.593872][ T4851] netdevsim netdevsim0 netdevsim2: set [1, 0] type 2 family 0 port 6081 - 0 [ 73.595327][ T4851] netdevsim netdevsim0 netdevsim3: set [1, 0] type 2 family 0 port 6081 - 0 [ 73.614293][ T9] wlan0: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 73.615570][ T9] wlan0: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 73.617156][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): wlan0: link becomes ready [ 73.625515][ T350] wlan1: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 73.626790][ T350] wlan1: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 73.628974][ T350] IPv6: ADDRCONF(NETDEV_CHANGE): wlan1: link becomes ready [ 73.739904][ T4962] loop0: detected capacity change from 0 to 32768 [ 73.787117][ T4962] BTRFS: device fsid ed167579-eb65-4e76-9a50-61ac97e9b59d devid 1 transid 8 /dev/loop0 scanned by syz.0.15 (4962) [ 73.793084][ T4962] BTRFS info (device loop0): using sha256 (sha256-ce) checksum algorithm [ 73.794765][ T4962] BTRFS info (device loop0): setting nodatacow, compression disabled [ 73.795948][ T4962] BTRFS info (device loop0): setting datacow [ 73.796941][ T4962] BTRFS info (device loop0): doing ref verification [ 73.798382][ T4962] BTRFS info (device loop0): force clearing of disk cache [ 73.799543][ T4962] BTRFS info (device loop0): turning off barriers [ 73.800727][ T4962] BTRFS info (device loop0): use zlib compression, level 3 [ 73.801864][ T4962] BTRFS info (device loop0): using free space tree [ 73.802893][ T4962] BTRFS info (device loop0): has skinny extents [ 73.815716][ T4962] BTRFS info (device loop0): clearing free space tree [ 73.816982][ T4962] BTRFS info (device loop0): clearing compat-ro feature flag for FREE_SPACE_TREE (0x1) [ 73.820499][ T4962] BTRFS info (device loop0): clearing compat-ro feature flag for FREE_SPACE_TREE_VALID (0x2) [ 73.827848][ T4962] BTRFS info (device loop0): creating free space tree [ 73.830296][ T4962] BTRFS info (device loop0): setting compat-ro feature flag for FREE_SPACE_TREE (0x1) [ 73.831887][ T4962] BTRFS info (device loop0): setting compat-ro feature flag for FREE_SPACE_TREE_VALID (0x2) [ 73.844834][ T4962] FAULT_INJECTION: forcing a failure. [ 73.844834][ T4962] name failslab, interval 1, probability 0, space 0, times 1 [ 73.846880][ T4962] CPU: 1 PID: 4962 Comm: syz.0.15 Not tainted syzkaller #0 [ 73.848031][ T4962] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/18/2026 [ 73.849754][ T4962] Call trace: [ 73.850316][ T4962] dump_backtrace+0x0/0x458 [ 73.851118][ T4962] show_stack+0x2c/0x3c [ 73.851805][ T4962] __dump_stack+0x30/0x40 [ 73.852527][ T4962] dump_stack_lvl+0xf4/0x15c [ 73.853298][ T4962] dump_stack+0x1c/0x5c [ 73.853971][ T4962] should_fail+0x3bc/0x514 [ 73.854809][ T4962] __should_failslab+0xbc/0x10c [ 73.855668][ T4962] should_failslab+0x10/0x28 [ 73.856421][ T4962] slab_pre_alloc_hook+0x64/0xe8 [ 73.857336][ T4962] kmem_cache_alloc+0x94/0x3d4 [ 73.858185][ T4962] btrfs_alloc_path+0x5c/0x68 [ 73.858968][ T4962] btrfs_insert_dir_item+0x184/0x3e8 [ 73.859944][ T4962] btrfs_add_link+0x2b0/0xa9c [ 73.860736][ T4962] btrfs_create+0x468/0x514 [ 73.861497][ T4962] path_openat+0xe18/0x2718 [ 73.862223][ T4962] do_filp_open+0x184/0x368 [ 73.862970][ T4962] do_sys_openat2+0x134/0x3f4 [ 73.863691][ T4962] __arm64_sys_openat+0x118/0x14c [ 73.864496][ T4962] invoke_syscall+0x98/0x2b0 [ 73.865225][ T4962] el0_svc_common+0x138/0x258 [ 73.865952][ T4962] do_el0_svc+0x58/0x13c [ 73.866716][ T4962] el0_svc+0x78/0x1d0 [ 73.867424][ T4962] el0t_64_sync_handler+0xcc/0xe4 [ 73.868253][ T4962] el0t_64_sync+0x1a0/0x1a4 [ 73.870165][ T4962] ------------[ cut here ]------------ [ 73.871455][ T4962] WARNING: CPU: 1 PID: 4962 at fs/btrfs/inode.c:6776 btrfs_add_link+0x718/0xa9c [ 73.872900][ T4962] Modules linked in: [ 73.873555][ T4962] CPU: 1 PID: 4962 Comm: syz.0.15 Not tainted syzkaller #0 [ 73.874873][ T4962] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/18/2026 [ 73.876645][ T4962] pstate: 62400005 (nZCv daif +PAN -UAO +TCO -DIT -SSBS BTYPE=--) [ 73.877881][ T4962] pc : btrfs_add_link+0x718/0xa9c [ 73.878744][ T4962] lr : btrfs_add_link+0x718/0xa9c [ 73.879618][ T4962] sp : ffff80001fd47580 [ 73.880313][ T4962] x29: ffff80001fd47680 x28: ffff0000deab8210 x27: 0000000000000108 [ 73.881726][ T4962] x26: 00000000fffffff4 x25: 0000000000000000 x24: dfff800000000000 [ 73.883022][ T4962] x23: 0000000000000014 x22: 1fffe0001bd5704d x21: ffff700003fa8eb8 [ 73.884401][ T4962] x20: 00000000fffffff4 x19: ffff0000deab8268 x18: 0000000000000001 [ 73.885788][ T4962] x17: 0000000000000000 x16: ffff80001125f448 x15: 00000000ffffffff [ 73.887151][ T4962] x14: 0000000000000001 x13: 1fffe000341f47ab x12: 0000000000ff0100 [ 73.888550][ T4962] x11: 0000000000000000 x10: 0000000000000000 x9 : 2b9f85dce4807800 [ 73.889853][ T4962] x8 : 2b9f85dce4807800 x7 : 0000000000000001 x6 : 0000000000000001 [ 73.891196][ T4962] x5 : ffff80001fd46e98 x4 : ffff80001437f3e0 x3 : ffff800008509220 [ 73.892652][ T4962] x2 : 0000000000000001 x1 : 0000000100000000 x0 : 0000000000000026 [ 73.893990][ T4962] Call trace: [ 73.894501][ T4962] btrfs_add_link+0x718/0xa9c [ 73.895267][ T4962] btrfs_create+0x468/0x514 [ 73.896040][ T4962] path_openat+0xe18/0x2718 [ 73.896773][ T4962] do_filp_open+0x184/0x368 [ 73.897496][ T4962] do_sys_openat2+0x134/0x3f4 [ 73.898263][ T4962] __arm64_sys_openat+0x118/0x14c [ 73.899128][ T4962] invoke_syscall+0x98/0x2b0 [ 73.899917][ T4962] el0_svc_common+0x138/0x258 [ 73.900687][ T4962] do_el0_svc+0x58/0x13c [ 73.901396][ T4962] el0_svc+0x78/0x1d0 [ 73.902098][ T4962] el0t_64_sync_handler+0xcc/0xe4 [ 73.902965][ T4962] el0t_64_sync+0x1a0/0x1a4 [ 73.903672][ T4962] irq event stamp: 82352 [ 73.904401][ T4962] hardirqs last enabled at (82351): [] __up_console_sem+0xb4/0xfc [ 73.906009][ T4962] hardirqs last disabled at (82352): [] el1_dbg+0x24/0x80 [ 73.907482][ T4962] softirqs last enabled at (82328): [] handle_softirqs+0xa40/0xbe4 [ 73.909111][ T4962] softirqs last disabled at (82265): [] __irq_exit_rcu+0x240/0x43c [ 73.910782][ T4962] ---[ end trace a09483aa755ef152 ]--- [ 73.913706][ T4962] BTRFS: error (device loop0) in btrfs_add_link:6776: errno=-12 Out of memory [ 73.915123][ T4962] BTRFS info (device loop0): forced readonly [ 74.104264][ T4986] loop0: detected capacity change from 0 to 32768 [ 74.149278][ T4986] BTRFS: device fsid ed167579-eb65-4e76-9a50-61ac97e9b59d devid 1 transid 8 /dev/loop0 scanned by syz.0.16 (4986) [ 74.152504][ T4986] BTRFS info (device loop0): using sha256 (sha256-ce) checksum algorithm [ 74.154023][ T4986] BTRFS info (device loop0): setting nodatacow, compression disabled [ 74.155866][ T4986] BTRFS info (device loop0): setting datacow [ 74.156935][ T4986] BTRFS info (device loop0): doing ref verification [ 74.158316][ T4986] BTRFS info (device loop0): force clearing of disk cache [ 74.159529][ T4986] BTRFS info (device loop0): turning off barriers [ 74.160681][ T4986] BTRFS info (device loop0): use zlib compression, level 3 [ 74.161784][ T4986] BTRFS info (device loop0): using free space tree [ 74.162975][ T4986] BTRFS info (device loop0): has skinny extents [ 74.171231][ T4986] BTRFS info (device loop0): clearing free space tree [ 74.172401][ T4986] BTRFS info (device loop0): clearing compat-ro feature flag for FREE_SPACE_TREE (0x1) [ 74.174091][ T4986] BTRFS info (device loop0): clearing compat-ro feature flag for FREE_SPACE_TREE_VALID (0x2) [ 74.177447][ T4986] BTRFS info (device loop0): creating free space tree [ 74.179192][ T4986] BTRFS info (device loop0): setting compat-ro feature flag for FREE_SPACE_TREE (0x1) [ 74.180926][ T4986] BTRFS info (device loop0): setting compat-ro feature flag for FREE_SPACE_TREE_VALID (0x2) [ 74.186253][ T4986] FAULT_INJECTION: forcing a failure. [ 74.186253][ T4986] name failslab, interval 1, probability 0, space 0, times 0 [ 74.188504][ T4986] CPU: 0 PID: 4986 Comm: syz.0.16 Tainted: G W syzkaller #0 [ 74.190011][ T4986] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/18/2026 [ 74.191770][ T4986] Call trace: [ 74.192356][ T4986] dump_backtrace+0x0/0x458 [ 74.193107][ T4986] show_stack+0x2c/0x3c [ 74.193790][ T4986] __dump_stack+0x30/0x40 [ 74.194523][ T4986] dump_stack_lvl+0xf4/0x15c [ 74.195264][ T4986] dump_stack+0x1c/0x5c [ 74.195933][ T4986] should_fail+0x3bc/0x514 [ 74.196612][ T4986] __should_failslab+0xbc/0x10c [ 74.197410][ T4986] should_failslab+0x10/0x28 [ 74.198119][ T4986] slab_pre_alloc_hook+0x64/0xe8 [ 74.198904][ T4986] kmem_cache_alloc+0x94/0x3d4 [ 74.199606][ T4986] btrfs_alloc_path+0x5c/0x68 [ 74.200304][ T4986] btrfs_insert_dir_item+0x184/0x3e8 [ 74.201087][ T4986] btrfs_add_link+0x2b0/0xa9c [ 74.201815][ T4986] btrfs_create+0x468/0x514 [ 74.202441][ T4986] path_openat+0xe18/0x2718 [ 74.203152][ T4986] do_filp_open+0x184/0x368 [ 74.203916][ T4986] do_sys_openat2+0x134/0x3f4 [ 74.204673][ T4986] __arm64_sys_openat+0x118/0x14c [ 74.205589][ T4986] invoke_syscall+0x98/0x2b0 [ 74.206408][ T4986] el0_svc_common+0x138/0x258 [ 74.207188][ T4986] do_el0_svc+0x58/0x13c [ 74.207892][ T4986] el0_svc+0x78/0x1d0 [ 74.208533][ T4986] el0t_64_sync_handler+0xcc/0xe4 [ 74.209342][ T4986] el0t_64_sync+0x1a0/0x1a4 [ 74.210908][ T4986] ------------[ cut here ]------------ [ 74.211887][ T4986] WARNING: CPU: 0 PID: 4986 at fs/btrfs/inode.c:6776 btrfs_add_link+0x718/0xa9c [ 74.213316][ T4986] Modules linked in: [ 74.213926][ T4986] CPU: 0 PID: 4986 Comm: syz.0.16 Tainted: G W syzkaller #0 [ 74.215172][ T4986] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/18/2026 [ 74.216651][ T4986] pstate: 62400005 (nZCv daif +PAN -UAO +TCO -DIT -SSBS BTYPE=--) [ 74.217914][ T4986] pc : btrfs_add_link+0x718/0xa9c [ 74.218720][ T4986] lr : btrfs_add_link+0x718/0xa9c [ 74.219599][ T4986] sp : ffff80001fe47580 [ 74.220258][ T4986] x29: ffff80001fe47680 x28: ffff0000de9d1210 x27: 0000000000000108 [ 74.221589][ T4986] x26: 00000000fffffff4 x25: 0000000000000000 x24: dfff800000000000 [ 74.223008][ T4986] x23: 0000000000000014 x22: 1fffe0001bd3a24d x21: ffff700003fc8eb8 [ 74.224351][ T4986] x20: 00000000fffffff4 x19: ffff0000de9d1268 x18: 0000000000000001 [ 74.225757][ T4986] x17: 0000000000000000 x16: ffff80001125f448 x15: 00000000ffffffff [ 74.227067][ T4986] x14: 0000000000000001 x13: 1fffe000341f05ab x12: 0000000000ff0100 [ 74.228369][ T4986] x11: 0000000000000000 x10: 0000000000000000 x9 : ce2d7ed5156df100 [ 74.229875][ T4986] x8 : ce2d7ed5156df100 x7 : 0000000000000001 x6 : 0000000000000001 [ 74.231231][ T4986] x5 : ffff80001fe46e98 x4 : ffff80001437f3e0 x3 : ffff800008509220 [ 74.232552][ T4986] x2 : 0000000000000001 x1 : 0000000100000000 x0 : 0000000000000026 [ 74.233980][ T4986] Call trace: [ 74.234520][ T4986] btrfs_add_link+0x718/0xa9c [ 74.235336][ T4986] btrfs_create+0x468/0x514 [ 74.236129][ T4986] path_openat+0xe18/0x2718 [ 74.236852][ T4986] do_filp_open+0x184/0x368 [ 74.237612][ T4986] do_sys_openat2+0x134/0x3f4 [ 74.238368][ T4986] __arm64_sys_openat+0x118/0x14c [ 74.239289][ T4986] invoke_syscall+0x98/0x2b0 [ 74.240046][ T4986] el0_svc_common+0x138/0x258 [ 74.240836][ T4986] do_el0_svc+0x58/0x13c [ 74.241545][ T4986] el0_svc+0x78/0x1d0 [ 74.242238][ T4986] el0t_64_sync_handler+0xcc/0xe4 [ 74.243098][ T4986] el0t_64_sync+0x1a0/0x1a4 [ 74.243826][ T4986] irq event stamp: 80536 [ 74.244541][ T4986] hardirqs last enabled at (80535): [] __up_console_sem+0xb4/0xfc [ 74.246132][ T4986] hardirqs last disabled at (80536): [] el1_dbg+0x24/0x80 [ 74.247528][ T4986] softirqs last enabled at (80516): [] handle_softirqs+0xa40/0xbe4 [ 74.249116][ T4986] softirqs last disabled at (80485): [] __irq_exit_rcu+0x240/0x43c [ 74.250662][ T4986] ---[ end trace a09483aa755ef153 ]--- [ 74.252924][ T4986] BTRFS: error (device loop0) in btrfs_add_link:6776: errno=-12 Out of memory [ 74.254391][ T4986] BTRFS info (device loop0): forced readonly [ 74.431507][ T5008] loop0: detected capacity change from 0 to 32768 [ 74.492388][ T5008] BTRFS: device fsid ed167579-eb65-4e76-9a50-61ac97e9b59d devid 1 transid 8 /dev/loop0 scanned by syz.0.17 (5008) [ 74.497345][ T5008] BTRFS info (device loop0): using sha256 (sha256-ce) checksum algorithm [ 74.499717][ T5008] BTRFS info (device loop0): setting nodatacow, compression disabled [ 74.501114][ T5008] BTRFS info (device loop0): setting datacow [ 74.502128][ T5008] BTRFS info (device loop0): doing ref verification [ 74.503169][ T5008] BTRFS info (device loop0): force clearing of disk cache [ 74.504376][ T5008] BTRFS info (device loop0): turning off barriers [ 74.505432][ T5008] BTRFS info (device loop0): use zlib compression, level 3 [ 74.506581][ T5008] BTRFS info (device loop0): using free space tree [ 74.507643][ T5008] BTRFS info (device loop0): has skinny extents [ 74.526070][ T5008] BTRFS info (device loop0): clearing free space tree [ 74.527316][ T5008] BTRFS info (device loop0): clearing compat-ro feature flag for FREE_SPACE_TREE (0x1) [ 74.538119][ T5008] BTRFS info (device loop0): clearing compat-ro feature flag for FREE_SPACE_TREE_VALID (0x2) [ 74.542713][ T5008] BTRFS info (device loop0): creating free space tree [ 74.544417][ T5008] BTRFS info (device loop0): setting compat-ro feature flag for FREE_SPACE_TREE (0x1) [ 74.546038][ T5008] BTRFS info (device loop0): setting compat-ro feature flag for FREE_SPACE_TREE_VALID (0x2) [ 74.552042][ T5008] FAULT_INJECTION: forcing a failure. [ 74.552042][ T5008] name failslab, interval 1, probability 0, space 0, times 0 [ 74.554029][ T5008] CPU: 1 PID: 5008 Comm: syz.0.17 Tainted: G W syzkaller #0 [ 74.555499][ T5008] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/18/2026 [ 74.557110][ T5008] Call trace: [ 74.557671][ T5008] dump_backtrace+0x0/0x458 [ 74.558445][ T5008] show_stack+0x2c/0x3c [ 74.559224][ T5008] __dump_stack+0x30/0x40 [ 74.560002][ T5008] dump_stack_lvl+0xf4/0x15c [ 74.560810][ T5008] dump_stack+0x1c/0x5c [ 74.561533][ T5008] should_fail+0x3bc/0x514 [ 74.562298][ T5008] __should_failslab+0xbc/0x10c [ 74.563226][ T5008] should_failslab+0x10/0x28 [ 74.563989][ T5008] slab_pre_alloc_hook+0x64/0xe8 [ 74.564854][ T5008] kmem_cache_alloc+0x94/0x3d4 [ 74.565696][ T5008] security_inode_alloc+0x38/0x11c [ 74.566578][ T5008] inode_init_always+0x670/0xa84 [ 74.567447][ T5008] new_inode_pseudo+0x7c/0x1fc [ 74.568270][ T5008] new_inode+0x38/0x174 [ 74.569010][ T5008] btrfs_new_inode+0x158/0x1564 [ 74.569863][ T5008] btrfs_create+0x24c/0x514 [ 74.570649][ T5008] path_openat+0xe18/0x2718 [ 74.571426][ T5008] do_filp_open+0x184/0x368 [ 74.572217][ T5008] do_sys_openat2+0x134/0x3f4 [ 74.573060][ T5008] __arm64_sys_openat+0x118/0x14c [ 74.573912][ T5008] invoke_syscall+0x98/0x2b0 [ 74.574716][ T5008] el0_svc_common+0x138/0x258 [ 74.575488][ T5008] do_el0_svc+0x58/0x13c [ 74.576179][ T5008] el0_svc+0x78/0x1d0 [ 74.576879][ T5008] el0t_64_sync_handler+0xcc/0xe4 [ 74.577753][ T5008] el0t_64_sync+0x1a0/0x1a4 [ 74.579365][ T4833] Bluetooth: hci1: command 0x0409 tx timeout [ 74.731700][ T5031] loop0: detected capacity change from 0 to 32768 [ 74.759161][ T5031] BTRFS: device fsid ed167579-eb65-4e76-9a50-61ac97e9b59d devid 1 transid 8 /dev/loop0 scanned by syz.0.18 (5031) [ 74.764324][ T5031] BTRFS info (device loop0): using sha256 (sha256-ce) checksum algorithm [ 74.765786][ T5031] BTRFS info (device loop0): setting nodatacow, compression disabled [ 74.767137][ T5031] BTRFS info (device loop0): setting datacow [ 74.768389][ T5031] BTRFS info (device loop0): doing ref verification [ 74.769359][ T5031] BTRFS info (device loop0): force clearing of disk cache [ 74.770455][ T5031] BTRFS info (device loop0): turning off barriers [ 74.771623][ T5031] BTRFS info (device loop0): use zlib compression, level 3 [ 74.772866][ T5031] BTRFS info (device loop0): using free space tree [ 74.774110][ T5031] BTRFS info (device loop0): has skinny extents [ 74.782306][ T5031] BTRFS info (device loop0): clearing free space tree [ 74.783443][ T5031] BTRFS info (device loop0): clearing compat-ro feature flag for FREE_SPACE_TREE (0x1) [ 74.785166][ T5031] BTRFS info (device loop0): clearing compat-ro feature flag for FREE_SPACE_TREE_VALID (0x2) [ 74.788605][ T5031] BTRFS info (device loop0): creating free space tree [ 74.790090][ T5031] BTRFS info (device loop0): setting compat-ro feature flag for FREE_SPACE_TREE (0x1) [ 74.791661][ T5031] BTRFS info (device loop0): setting compat-ro feature flag for FREE_SPACE_TREE_VALID (0x2) [ 74.796328][ T5031] FAULT_INJECTION: forcing a failure. [ 74.796328][ T5031] name failslab, interval 1, probability 0, space 0, times 0 [ 74.800190][ T5031] CPU: 0 PID: 5031 Comm: syz.0.18 Tainted: G W syzkaller #0 [ 74.801630][ T5031] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/18/2026 [ 74.803283][ T5031] Call trace: [ 74.803804][ T5031] dump_backtrace+0x0/0x458 [ 74.804473][ T5031] show_stack+0x2c/0x3c [ 74.805111][ T5031] __dump_stack+0x30/0x40 [ 74.805848][ T5031] dump_stack_lvl+0xf4/0x15c [ 74.806571][ T5031] dump_stack+0x1c/0x5c [ 74.807221][ T5031] should_fail+0x3bc/0x514 [ 74.807912][ T5031] __should_failslab+0xbc/0x10c [ 74.808642][ T5031] should_failslab+0x10/0x28 [ 74.809357][ T5031] slab_pre_alloc_hook+0x64/0xe8 [ 74.810278][ T5031] kmem_cache_alloc+0x94/0x3d4 [ 74.811080][ T5031] btrfs_alloc_path+0x5c/0x68 [ 74.811849][ T5031] btrfs_insert_dir_item+0x184/0x3e8 [ 74.812766][ T5031] btrfs_add_link+0x2b0/0xa9c [ 74.813556][ T5031] btrfs_create+0x468/0x514 [ 74.814273][ T5031] path_openat+0xe18/0x2718 [ 74.814994][ T5031] do_filp_open+0x184/0x368 [ 74.815675][ T5031] do_sys_openat2+0x134/0x3f4 [ 74.816389][ T5031] __arm64_sys_openat+0x118/0x14c [ 74.817200][ T5031] invoke_syscall+0x98/0x2b0 [ 74.817928][ T5031] el0_svc_common+0x138/0x258 [ 74.818648][ T5031] do_el0_svc+0x58/0x13c [ 74.819341][ T5031] el0_svc+0x78/0x1d0 [ 74.819986][ T5031] el0t_64_sync_handler+0xcc/0xe4 [ 74.820848][ T5031] el0t_64_sync+0x1a0/0x1a4 [ 74.823913][ T5031] ------------[ cut here ]------------ [ 74.824900][ T5031] WARNING: CPU: 0 PID: 5031 at fs/btrfs/inode.c:6776 btrfs_add_link+0x718/0xa9c [ 74.826342][ T5031] Modules linked in: [ 74.826961][ T5031] CPU: 0 PID: 5031 Comm: syz.0.18 Tainted: G W syzkaller #0 [ 74.828431][ T5031] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/18/2026 [ 74.830115][ T5031] pstate: 62400005 (nZCv daif +PAN -UAO +TCO -DIT -SSBS BTYPE=--) [ 74.831437][ T5031] pc : btrfs_add_link+0x718/0xa9c [ 74.832299][ T5031] lr : btrfs_add_link+0x718/0xa9c [ 74.833101][ T5031] sp : ffff80001fdd7580 [ 74.833796][ T5031] x29: ffff80001fdd7680 x28: ffff0000de9d14d0 x27: 0000000000000108 [ 74.835172][ T5031] x26: 00000000fffffff4 x25: 0000000000000000 x24: dfff800000000000 [ 74.836574][ T5031] x23: 0000000000000014 x22: 1fffe0001bd3a2a5 x21: ffff700003fbaeb8 [ 74.838027][ T5031] x20: 00000000fffffff4 x19: ffff0000de9d1528 x18: 0000000000000001 [ 74.839456][ T5031] x17: 0000000000000000 x16: ffff80001125f448 x15: 00000000ffffffff [ 74.840826][ T5031] x14: 0000000000000001 x13: 1fffe000341f05ab x12: 0000000000ff0100 [ 74.842240][ T5031] x11: 0000000000000000 x10: 0000000000000000 x9 : e09991648deebe00 [ 74.843573][ T5031] x8 : e09991648deebe00 x7 : 0000000000000001 x6 : 0000000000000001 [ 74.844897][ T5031] x5 : ffff80001fdd6e98 x4 : ffff80001437f3e0 x3 : ffff800008509220 [ 74.846260][ T5031] x2 : 0000000000000001 x1 : 0000000100000000 x0 : 0000000000000026 [ 74.847579][ T5031] Call trace: [ 74.848096][ T5031] btrfs_add_link+0x718/0xa9c [ 74.848890][ T5031] btrfs_create+0x468/0x514 [ 74.849620][ T5031] path_openat+0xe18/0x2718 [ 74.850332][ T5031] do_filp_open+0x184/0x368 [ 74.851089][ T5031] do_sys_openat2+0x134/0x3f4 [ 74.851816][ T5031] __arm64_sys_openat+0x118/0x14c [ 74.852636][ T5031] invoke_syscall+0x98/0x2b0 [ 74.853431][ T5031] el0_svc_common+0x138/0x258 [ 74.854202][ T5031] do_el0_svc+0x58/0x13c [ 74.854915][ T5031] el0_svc+0x78/0x1d0 [ 74.855569][ T5031] el0t_64_sync_handler+0xcc/0xe4 [ 74.856416][ T5031] el0t_64_sync+0x1a0/0x1a4 [ 74.857179][ T5031] irq event stamp: 80346 [ 74.857862][ T5031] hardirqs last enabled at (80345): [] __up_console_sem+0xb4/0xfc [ 74.859488][ T5031] hardirqs last disabled at (80346): [] el1_dbg+0x24/0x80 [ 74.861010][ T5031] softirqs last enabled at (80326): [] handle_softirqs+0xa40/0xbe4 [ 74.862689][ T5031] softirqs last disabled at (80285): [] __irq_exit_rcu+0x240/0x43c [ 74.864341][ T5031] ---[ end trace a09483aa755ef154 ]--- [ 74.865616][ T5031] BTRFS: error (device loop0) in btrfs_add_link:6776: errno=-12 Out of memory [ 74.867051][ T5031] BTRFS info (device loop0): forced readonly [ 75.043242][ T5053] loop0: detected capacity change from 0 to 32768 [ 75.073110][ T5053] BTRFS: device fsid ed167579-eb65-4e76-9a50-61ac97e9b59d devid 1 transid 8 /dev/loop0 scanned by syz.0.19 (5053) [ 75.076363][ T5053] BTRFS info (device loop0): using sha256 (sha256-ce) checksum algorithm [ 75.077783][ T5053] BTRFS info (device loop0): setting nodatacow, compression disabled [ 75.079219][ T5053] BTRFS info (device loop0): setting datacow [ 75.080202][ T5053] BTRFS info (device loop0): doing ref verification [ 75.081244][ T5053] BTRFS info (device loop0): force clearing of disk cache [ 75.082355][ T5053] BTRFS info (device loop0): turning off barriers [ 75.083323][ T5053] BTRFS info (device loop0): use zlib compression, level 3 [ 75.084412][ T5053] BTRFS info (device loop0): using free space tree [ 75.085439][ T5053] BTRFS info (device loop0): has skinny extents [ 75.094949][ T5053] BTRFS info (device loop0): clearing free space tree [ 75.096207][ T5053] BTRFS info (device loop0): clearing compat-ro feature flag for FREE_SPACE_TREE (0x1) [ 75.097884][ T5053] BTRFS info (device loop0): clearing compat-ro feature flag for FREE_SPACE_TREE_VALID (0x2) [ 75.101582][ T5053] BTRFS info (device loop0): creating free space tree [ 75.103055][ T5053] BTRFS info (device loop0): setting compat-ro feature flag for FREE_SPACE_TREE (0x1) [ 75.104636][ T5053] BTRFS info (device loop0): setting compat-ro feature flag for FREE_SPACE_TREE_VALID (0x2) [ 75.111384][ T5053] FAULT_INJECTION: forcing a failure. [ 75.111384][ T5053] name failslab, interval 1, probability 0, space 0, times 0 [ 75.113545][ T5053] CPU: 0 PID: 5053 Comm: syz.0.19 Tainted: G W syzkaller #0 [ 75.114853][ T5053] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/18/2026 [ 75.116583][ T5053] Call trace: [ 75.117105][ T5053] dump_backtrace+0x0/0x458 [ 75.117902][ T5053] show_stack+0x2c/0x3c [ 75.118597][ T5053] __dump_stack+0x30/0x40 [ 75.119337][ T5053] dump_stack_lvl+0xf4/0x15c [ 75.120095][ T5053] dump_stack+0x1c/0x5c [ 75.120765][ T5053] should_fail+0x3bc/0x514 [ 75.121486][ T5053] __should_failslab+0xbc/0x10c [ 75.122234][ T5053] should_failslab+0x10/0x28 [ 75.123010][ T5053] slab_pre_alloc_hook+0x64/0xe8 [ 75.123943][ T5053] kmem_cache_alloc+0x94/0x3d4 [ 75.124730][ T5053] security_inode_alloc+0x38/0x11c [ 75.125626][ T5053] inode_init_always+0x670/0xa84 [ 75.126514][ T5053] new_inode_pseudo+0x7c/0x1fc [ 75.127362][ T5053] new_inode+0x38/0x174 [ 75.128071][ T5053] btrfs_new_inode+0x158/0x1564 [ 75.128885][ T5053] btrfs_create+0x24c/0x514 [ 75.129710][ T5053] path_openat+0xe18/0x2718 [ 75.130468][ T5053] do_filp_open+0x184/0x368 [ 75.131186][ T5053] do_sys_openat2+0x134/0x3f4 [ 75.131902][ T5053] __arm64_sys_openat+0x118/0x14c [ 75.132867][ T5053] invoke_syscall+0x98/0x2b0 [ 75.133664][ T5053] el0_svc_common+0x138/0x258 [ 75.134590][ T5053] do_el0_svc+0x58/0x13c [ 75.135341][ T5053] el0_svc+0x78/0x1d0 [ 75.136093][ T5053] el0t_64_sync_handler+0xcc/0xe4 [ 75.136957][ T5053] el0t_64_sync+0x1a0/0x1a4 [ 75.254355][ T1707] device hsr_slave_0 left promiscuous mode [ 75.299488][ T1707] device hsr_slave_1 left promiscuous mode [ 75.300131][ T5075] loop0: detected capacity change from 0 to 32768 [ 75.339243][ T5075] BTRFS: device fsid ed167579-eb65-4e76-9a50-61ac97e9b59d devid 1 transid 8 /dev/loop0 scanned by syz.0.20 (5075) [ 75.388141][ T1707] batman_adv: batadv0: Interface deactivated: batadv_slave_0 [ 75.389341][ T1707] batman_adv: batadv0: Removing interface: batadv_slave_0 [ 75.390871][ T1707] batman_adv: batadv0: Interface deactivated: batadv_slave_1 [ 75.391111][ T5075] BTRFS info (device loop0): using sha256 (sha256-ce) checksum algorithm [ 75.392076][ T1707] batman_adv: batadv0: Removing interface: batadv_slave_1 [ 75.393619][ T5075] BTRFS info (device loop0): setting nodatacow, compression disabled [ 75.396941][ T1707] device bridge_slave_1 left promiscuous mode [ 75.397282][ T5075] BTRFS info (device loop0): setting datacow [ 75.398775][ T1707] bridge0: port 2(bridge_slave_1) entered disabled state [ 75.400519][ T5075] BTRFS info (device loop0): doing ref verification [ 75.401749][ T5075] BTRFS info (device loop0): force clearing of disk cache [ 75.403042][ T5075] BTRFS info (device loop0): turning off barriers [ 75.404161][ T5075] BTRFS info (device loop0): use zlib compression, level 3 [ 75.405334][ T5075] BTRFS info (device loop0): using free space tree [ 75.406502][ T5075] BTRFS info (device loop0): has skinny extents [ 75.425712][ T5075] BTRFS info (device loop0): clearing free space tree [ 75.426888][ T5075] BTRFS info (device loop0): clearing compat-ro feature flag for FREE_SPACE_TREE (0x1) [ 75.430125][ T5075] BTRFS info (device loop0): clearing compat-ro feature flag for FREE_SPACE_TREE_VALID (0x2) [ 75.433436][ T5075] BTRFS info (device loop0): creating free space tree [ 75.434928][ T5075] BTRFS info (device loop0): setting compat-ro feature flag for FREE_SPACE_TREE (0x1) [ 75.436442][ T5075] BTRFS info (device loop0): setting compat-ro feature flag for FREE_SPACE_TREE_VALID (0x2) [ 75.440972][ T5075] FAULT_INJECTION: forcing a failure. [ 75.440972][ T5075] name failslab, interval 1, probability 0, space 0, times 0 [ 75.443079][ T5075] CPU: 0 PID: 5075 Comm: syz.0.20 Tainted: G W syzkaller #0 [ 75.444495][ T5075] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/18/2026 [ 75.446199][ T5075] Call trace: [ 75.446796][ T5075] dump_backtrace+0x0/0x458 [ 75.447487][ T5075] show_stack+0x2c/0x3c [ 75.448135][ T5075] __dump_stack+0x30/0x40 [ 75.448912][ T5075] dump_stack_lvl+0xf4/0x15c [ 75.449639][ T5075] dump_stack+0x1c/0x5c [ 75.450308][ T5075] should_fail+0x3bc/0x514 [ 75.451082][ T5075] __should_failslab+0xbc/0x10c [ 75.451847][ T5075] should_failslab+0x10/0x28 [ 75.452595][ T5075] slab_pre_alloc_hook+0x64/0xe8 [ 75.453367][ T5075] kmem_cache_alloc+0x94/0x3d4 [ 75.454208][ T5075] btrfs_alloc_path+0x5c/0x68 [ 75.455028][ T5075] btrfs_insert_dir_item+0x184/0x3e8 [ 75.455954][ T5075] btrfs_add_link+0x2b0/0xa9c [ 75.456754][ T5075] btrfs_create+0x468/0x514 [ 75.457495][ T5075] path_openat+0xe18/0x2718 [ 75.458308][ T5075] do_filp_open+0x184/0x368 [ 75.459106][ T5075] do_sys_openat2+0x134/0x3f4 [ 75.459962][ T5075] __arm64_sys_openat+0x118/0x14c [ 75.460870][ T5075] invoke_syscall+0x98/0x2b0 [ 75.461665][ T5075] el0_svc_common+0x138/0x258 [ 75.462418][ T5075] do_el0_svc+0x58/0x13c [ 75.463100][ T5075] el0_svc+0x78/0x1d0 [ 75.463739][ T5075] el0t_64_sync_handler+0xcc/0xe4 [ 75.464584][ T5075] el0t_64_sync+0x1a0/0x1a4 [ 75.468118][ T5075] ------------[ cut here ]------------ [ 75.469625][ T5075] WARNING: CPU: 1 PID: 5075 at fs/btrfs/inode.c:6776 btrfs_add_link+0x718/0xa9c [ 75.471171][ T5075] Modules linked in: [ 75.471809][ T5075] CPU: 1 PID: 5075 Comm: syz.0.20 Tainted: G W syzkaller #0 [ 75.473377][ T5075] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/18/2026 [ 75.475158][ T5075] pstate: 62400005 (nZCv daif +PAN -UAO +TCO -DIT -SSBS BTYPE=--) [ 75.476527][ T5075] pc : btrfs_add_link+0x718/0xa9c [ 75.476549][ T1707] device bridge_slave_0 left promiscuous mode [ 75.477404][ T5075] lr : btrfs_add_link+0x718/0xa9c [ 75.479276][ T5075] sp : ffff800020467580 [ 75.479823][ T1707] bridge0: port 1(bridge_slave_0) entered disabled state [ 75.480005][ T5075] x29: ffff800020467680 x28: ffff0000de9d1a50 x27: 0000000000000108 [ 75.482374][ T5075] x26: 00000000fffffff4 x25: 0000000000000000 x24: dfff800000000000 [ 75.483702][ T5075] x23: 0000000000000014 x22: 1fffe0001bd3a355 x21: ffff70000408ceb8 [ 75.485049][ T5075] x20: 00000000fffffff4 x19: ffff0000de9d1aa8 x18: 0000000000000001 [ 75.486645][ T5075] x17: 0000000000000000 x16: ffff80001125f448 x15: 00000000ffffffff [ 75.488031][ T5075] x14: 0000000000000001 x13: 1fffe000341f47ab x12: 0000000000ff0100 [ 75.489350][ T5075] x11: 0000000000000000 x10: 0000000000000000 x9 : 5755d8870d272b00 [ 75.490787][ T5075] x8 : 5755d8870d272b00 x7 : 0000000000000001 x6 : 0000000000000001 [ 75.492198][ T5075] x5 : ffff800020466e98 x4 : ffff80001437f3e0 x3 : ffff800008509220 [ 75.493662][ T5075] x2 : 0000000000000001 x1 : 0000000100000000 x0 : 0000000000000026 [ 75.495024][ T5075] Call trace: [ 75.495530][ T5075] btrfs_add_link+0x718/0xa9c [ 75.496363][ T5075] btrfs_create+0x468/0x514 [ 75.497123][ T5075] path_openat+0xe18/0x2718 [ 75.497874][ T5075] do_filp_open+0x184/0x368 [ 75.498636][ T5075] do_sys_openat2+0x134/0x3f4 [ 75.499423][ T5075] __arm64_sys_openat+0x118/0x14c [ 75.500289][ T5075] invoke_syscall+0x98/0x2b0 [ 75.501053][ T5075] el0_svc_common+0x138/0x258 [ 75.501834][ T5075] do_el0_svc+0x58/0x13c [ 75.502553][ T5075] el0_svc+0x78/0x1d0 [ 75.503232][ T5075] el0t_64_sync_handler+0xcc/0xe4 [ 75.504116][ T5075] el0t_64_sync+0x1a0/0x1a4 [ 75.504884][ T5075] irq event stamp: 79940 [ 75.505561][ T5075] hardirqs last enabled at (79939): [] __up_console_sem+0xb4/0xfc [ 75.507042][ T5075] hardirqs last disabled at (79940): [] el1_dbg+0x24/0x80 [ 75.508617][ T5075] softirqs last enabled at (79916): [] handle_softirqs+0xa40/0xbe4 [ 75.510292][ T5075] softirqs last disabled at (79867): [] __irq_exit_rcu+0x240/0x43c [ 75.511925][ T5075] ---[ end trace a09483aa755ef155 ]--- [ 75.513567][ T5075] BTRFS: error (device loop0) in btrfs_add_link:6776: errno=-12 Out of memory [ 75.514894][ T5075] BTRFS info (device loop0): forced readonly [ 75.588068][ T1707] device veth1_macvtap left promiscuous mode [ 75.589220][ T1707] device veth0_macvtap left promiscuous mode [ 75.590271][ T1707] device veth1_vlan left promiscuous mode [ 75.591257][ T1707] device veth0_vlan left promiscuous mode [ 75.684209][ T1707] team0 (unregistering): Port device team_slave_1 removed [ 75.689665][ T1707] team0 (unregistering): Port device team_slave_0 removed [ 75.693956][ T1707] bond0 (unregistering): (slave bond_slave_1): Releasing backup interface [ 75.714185][ T5106] loop0: detected capacity change from 0 to 32768 [ 75.720649][ T5106] BTRFS: device fsid ed167579-eb65-4e76-9a50-61ac97e9b59d devid 1 transid 8 /dev/loop0 scanned by syz.0.21 (5106) [ 75.724332][ T5106] BTRFS info (device loop0): using sha256 (sha256-ce) checksum algorithm [ 75.725710][ T5106] BTRFS info (device loop0): setting nodatacow, compression disabled [ 75.727022][ T5106] BTRFS info (device loop0): setting datacow [ 75.732643][ T5106] BTRFS info (device loop0): doing ref verification [ 75.733696][ T5106] BTRFS info (device loop0): force clearing of disk cache [ 75.734981][ T5106] BTRFS info (device loop0): turning off barriers [ 75.736311][ T1707] bond0 (unregistering): (slave bond_slave_0): Releasing backup interface [ 75.749314][ T5106] FAULT_INJECTION: forcing a failure. [ 75.749314][ T5106] name failslab, interval 1, probability 0, space 0, times 0 [ 75.751464][ T5106] CPU: 1 PID: 5106 Comm: syz.0.21 Tainted: G W syzkaller #0 [ 75.752865][ T5106] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/18/2026 [ 75.754539][ T5106] Call trace: [ 75.755090][ T5106] dump_backtrace+0x0/0x458 [ 75.755838][ T5106] show_stack+0x2c/0x3c [ 75.756549][ T5106] __dump_stack+0x30/0x40 [ 75.757314][ T5106] dump_stack_lvl+0xf4/0x15c [ 75.758044][ T5106] dump_stack+0x1c/0x5c [ 75.758718][ T5106] should_fail+0x3bc/0x514 [ 75.759489][ T5106] __should_failslab+0xbc/0x10c [ 75.760288][ T5106] should_failslab+0x10/0x28 [ 75.761084][ T5106] slab_pre_alloc_hook+0x64/0xe8 [ 75.761945][ T5106] kmem_cache_alloc+0x94/0x3d4 [ 75.762775][ T5106] btrfs_alloc_path+0x5c/0x68 [ 75.763565][ T5106] btrfs_insert_dir_item+0x184/0x3e8 [ 75.764334][ T5106] btrfs_add_link+0x2b0/0xa9c [ 75.765142][ T5106] btrfs_create+0x468/0x514 [ 75.765881][ T5106] path_openat+0xe18/0x2718 [ 75.766654][ T5106] do_filp_open+0x184/0x368 [ 75.767371][ T5106] do_sys_openat2+0x134/0x3f4 [ 75.768160][ T5106] __arm64_sys_openat+0x118/0x14c [ 75.768977][ T5106] invoke_syscall+0x98/0x2b0 [ 75.769751][ T5106] el0_svc_common+0x138/0x258 [ 75.770579][ T5106] do_el0_svc+0x58/0x13c [ 75.771339][ T5106] el0_svc+0x78/0x1d0 [ 75.772013][ T5106] el0t_64_sync_handler+0xcc/0xe4 [ 75.772889][ T5106] el0t_64_sync+0x1a0/0x1a4 [ 75.776093][ T5106] ------------[ cut here ]------------ [ 75.777191][ T5106] WARNING: CPU: 0 PID: 5106 at fs/btrfs/inode.c:6776 btrfs_add_link+0x718/0xa9c [ 75.778478][ T5106] Modules linked in: [ 75.779106][ T5106] CPU: 0 PID: 5106 Comm: syz.0.21 Tainted: G W syzkaller #0 [ 75.780579][ T5106] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/18/2026 [ 75.782284][ T5106] pstate: 62400005 (nZCv daif +PAN -UAO +TCO -DIT -SSBS BTYPE=--) [ 75.783513][ T5106] pc : btrfs_add_link+0x718/0xa9c [ 75.784362][ T5106] lr : btrfs_add_link+0x718/0xa9c [ 75.785203][ T5106] sp : ffff800020537580 [ 75.785879][ T5106] x29: ffff800020537680 x28: ffff0000deab8a50 x27: 0000000000000108 [ 75.787227][ T5106] x26: 00000000fffffff4 x25: 0000000000000000 x24: dfff800000000000 [ 75.788605][ T5106] x23: 0000000000000014 x22: 1fffe0001bd57155 x21: ffff7000040a6eb8 [ 75.789992][ T5106] x20: 00000000fffffff4 x19: ffff0000deab8aa8 x18: 0000000000000001 [ 75.791347][ T5106] x17: 0000000000000000 x16: ffff80001125f448 x15: 00000000ffffffff [ 75.792625][ T5106] x14: 0000000000000001 x13: 1fffe000341f05ab x12: 0000000000ff0100 [ 75.793964][ T5106] x11: 0000000000000000 x10: 0000000000000000 x9 : ca134ecbf9130800 [ 75.795336][ T5106] x8 : ca134ecbf9130800 x7 : 0000000000000001 x6 : 0000000000000001 [ 75.796694][ T5106] x5 : ffff800020536e98 x4 : ffff80001437f3e0 x3 : ffff800008509220 [ 75.798076][ T5106] x2 : 0000000000000001 x1 : 0000000100000000 x0 : 0000000000000026 [ 75.799510][ T5106] Call trace: [ 75.800086][ T5106] btrfs_add_link+0x718/0xa9c [ 75.800919][ T5106] btrfs_create+0x468/0x514 [ 75.801685][ T5106] path_openat+0xe18/0x2718 [ 75.802401][ T5106] do_filp_open+0x184/0x368 [ 75.803138][ T5106] do_sys_openat2+0x134/0x3f4 [ 75.803942][ T5106] __arm64_sys_openat+0x118/0x14c [ 75.804839][ T5106] invoke_syscall+0x98/0x2b0 [ 75.805699][ T5106] el0_svc_common+0x138/0x258 [ 75.806452][ T5106] do_el0_svc+0x58/0x13c [ 75.807154][ T5106] el0_svc+0x78/0x1d0 [ 75.807887][ T5106] el0t_64_sync_handler+0xcc/0xe4 [ 75.808721][ T5106] el0t_64_sync+0x1a0/0x1a4 [ 75.809440][ T5106] irq event stamp: 80310 [ 75.810176][ T5106] hardirqs last enabled at (80309): [] __up_console_sem+0xb4/0xfc [ 75.811882][ T5106] hardirqs last disabled at (80310): [] el1_dbg+0x24/0x80 [ 75.813393][ T5106] softirqs last enabled at (80288): [] handle_softirqs+0xa40/0xbe4 [ 75.815042][ T5106] softirqs last disabled at (80229): [] __irq_exit_rcu+0x240/0x43c [ 75.816564][ T5106] ---[ end trace a09483aa755ef156 ]--- [ 75.818905][ T5106] BTRFS: error (device loop0) in btrfs_add_link:6776: errno=-12 Out of memory [ 75.880441][ T1707] bond0 (unregistering): Released all slaves [ 76.003039][ T5127] loop0: detected capacity change from 0 to 32768 [ 76.039024][ T5127] BTRFS: device fsid ed167579-eb65-4e76-9a50-61ac97e9b59d devid 1 transid 8 /dev/loop0 scanned by syz.0.22 (5127) [ 76.064861][ T5127] FAULT_INJECTION: forcing a failure. [ 76.064861][ T5127] name failslab, interval 1, probability 0, space 0, times 0 [ 76.067031][ T5127] CPU: 0 PID: 5127 Comm: syz.0.22 Tainted: G W syzkaller #0 [ 76.068487][ T5127] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/18/2026 [ 76.070139][ T5127] Call trace: [ 76.070697][ T5127] dump_backtrace+0x0/0x458 [ 76.071436][ T5127] show_stack+0x2c/0x3c [ 76.072183][ T5127] __dump_stack+0x30/0x40 [ 76.072868][ T5127] dump_stack_lvl+0xf4/0x15c [ 76.073662][ T5127] dump_stack+0x1c/0x5c [ 76.074390][ T5127] should_fail+0x3bc/0x514 [ 76.075142][ T5127] __should_failslab+0xbc/0x10c [ 76.075965][ T5127] should_failslab+0x10/0x28 [ 76.076833][ T5127] slab_pre_alloc_hook+0x64/0xe8 [ 76.077719][ T5127] kmem_cache_alloc+0x94/0x3d4 [ 76.078516][ T5127] btrfs_alloc_path+0x5c/0x68 [ 76.079295][ T5127] btrfs_insert_dir_item+0x184/0x3e8 [ 76.080227][ T5127] btrfs_add_link+0x2b0/0xa9c [ 76.080999][ T5127] btrfs_create+0x468/0x514 [ 76.081773][ T5127] path_openat+0xe18/0x2718 [ 76.082531][ T5127] do_filp_open+0x184/0x368 [ 76.083312][ T5127] do_sys_openat2+0x134/0x3f4 [ 76.084064][ T5127] __arm64_sys_openat+0x118/0x14c [ 76.084916][ T5127] invoke_syscall+0x98/0x2b0 [ 76.085680][ T5127] el0_svc_common+0x138/0x258 [ 76.086398][ T5127] do_el0_svc+0x58/0x13c [ 76.087075][ T5127] el0_svc+0x78/0x1d0 [ 76.087756][ T5127] el0t_64_sync_handler+0xcc/0xe4 [ 76.088604][ T5127] el0t_64_sync+0x1a0/0x1a4 [ 76.091245][ T5127] ------------[ cut here ]------------ [ 76.092360][ T5127] WARNING: CPU: 0 PID: 5127 at fs/btrfs/inode.c:6776 btrfs_add_link+0x718/0xa9c [ 76.093814][ T5127] Modules linked in: [ 76.094439][ T5127] CPU: 0 PID: 5127 Comm: syz.0.22 Tainted: G W syzkaller #0 [ 76.095767][ T5127] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/18/2026 [ 76.097524][ T5127] pstate: 62400005 (nZCv daif +PAN -UAO +TCO -DIT -SSBS BTYPE=--) [ 76.098905][ T5127] pc : btrfs_add_link+0x718/0xa9c [ 76.099750][ T5127] lr : btrfs_add_link+0x718/0xa9c [ 76.100606][ T5127] sp : ffff800020467580 [ 76.101337][ T5127] x29: ffff800020467680 x28: ffff0000de9d1d10 x27: 0000000000000108 [ 76.102732][ T5127] x26: 00000000fffffff4 x25: 0000000000000000 x24: dfff800000000000 [ 76.104163][ T5127] x23: 0000000000000014 x22: 1fffe0001bd3a3ad x21: ffff70000408ceb8 [ 76.105516][ T5127] x20: 00000000fffffff4 x19: ffff0000de9d1d68 x18: 0000000000000001 [ 76.106873][ T5127] x17: 0000000000000000 x16: ffff80001125f448 x15: 00000000ffffffff [ 76.108271][ T5127] x14: 0000000000000001 x13: 1fffe000341f05ab x12: 0000000000ff0100 [ 76.109616][ T5127] x11: 0000000000000000 x10: 0000000000000000 x9 : 8f79c8bb2311ab00 [ 76.111034][ T5127] x8 : 8f79c8bb2311ab00 x7 : 0000000000000001 x6 : 0000000000000001 [ 76.112407][ T5127] x5 : ffff800020466e98 x4 : ffff80001437f3e0 x3 : ffff800008509220 [ 76.113781][ T5127] x2 : 0000000000000001 x1 : 0000000100000000 x0 : 0000000000000026 [ 76.115139][ T5127] Call trace: [ 76.115718][ T5127] btrfs_add_link+0x718/0xa9c [ 76.116480][ T5127] btrfs_create+0x468/0x514 [ 76.117263][ T5127] path_openat+0xe18/0x2718 [ 76.118008][ T5127] do_filp_open+0x184/0x368 [ 76.118778][ T5127] do_sys_openat2+0x134/0x3f4 [ 76.119587][ T5127] __arm64_sys_openat+0x118/0x14c [ 76.120440][ T5127] invoke_syscall+0x98/0x2b0 [ 76.121192][ T5127] el0_svc_common+0x138/0x258 [ 76.121974][ T5127] do_el0_svc+0x58/0x13c [ 76.122706][ T5127] el0_svc+0x78/0x1d0 [ 76.123437][ T5127] el0t_64_sync_handler+0xcc/0xe4 [ 76.124349][ T5127] el0t_64_sync+0x1a0/0x1a4 [ 76.125173][ T5127] irq event stamp: 79814 [ 76.125881][ T5127] hardirqs last enabled at (79813): [] __up_console_sem+0xb4/0xfc [ 76.127486][ T5127] hardirqs last disabled at (79814): [] el1_dbg+0x24/0x80 [ 76.129021][ T5127] softirqs last enabled at (79788): [] handle_softirqs+0xa40/0xbe4 [ 76.130695][ T5127] softirqs last disabled at (79745): [] __irq_exit_rcu+0x240/0x43c [ 76.132259][ T5127] ---[ end trace a09483aa755ef157 ]--- [ 76.134072][ T5127] BTRFS: error (device loop0) in btrfs_add_link:6776: errno=-12 Out of memory [ 76.326196][ T5148] loop0: detected capacity change from 0 to 32768 [ 76.359252][ T5148] BTRFS: device fsid ed167579-eb65-4e76-9a50-61ac97e9b59d devid 1 transid 8 /dev/loop0 scanned by syz.0.23 (5148) [ 76.389745][ T5148] FAULT_INJECTION: forcing a failure. [ 76.389745][ T5148] name failslab, interval 1, probability 0, space 0, times 0 [ 76.391895][ T5148] CPU: 1 PID: 5148 Comm: syz.0.23 Tainted: G W syzkaller #0 [ 76.393360][ T5148] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/18/2026 [ 76.395138][ T5148] Call trace: [ 76.395714][ T5148] dump_backtrace+0x0/0x458 [ 76.396444][ T5148] show_stack+0x2c/0x3c [ 76.397172][ T5148] __dump_stack+0x30/0x40 [ 76.397862][ T5148] dump_stack_lvl+0xf4/0x15c [ 76.398649][ T5148] dump_stack+0x1c/0x5c [ 76.399287][ T5148] should_fail+0x3bc/0x514 [ 76.400024][ T5148] __should_failslab+0xbc/0x10c [ 76.400810][ T5148] should_failslab+0x10/0x28 [ 76.401493][ T5148] slab_pre_alloc_hook+0x64/0xe8 [ 76.402255][ T5148] kmem_cache_alloc+0x94/0x3d4 [ 76.402957][ T5148] btrfs_alloc_path+0x5c/0x68 [ 76.403637][ T5148] btrfs_insert_dir_item+0x184/0x3e8 [ 76.404439][ T5148] btrfs_add_link+0x2b0/0xa9c [ 76.405116][ T5148] btrfs_create+0x468/0x514 [ 76.405834][ T5148] path_openat+0xe18/0x2718 [ 76.406576][ T5148] do_filp_open+0x184/0x368 [ 76.407383][ T5148] do_sys_openat2+0x134/0x3f4 [ 76.408224][ T5148] __arm64_sys_openat+0x118/0x14c [ 76.408998][ T5148] invoke_syscall+0x98/0x2b0 [ 76.409798][ T5148] el0_svc_common+0x138/0x258 [ 76.410546][ T5148] do_el0_svc+0x58/0x13c [ 76.411261][ T5148] el0_svc+0x78/0x1d0 [ 76.411906][ T5148] el0t_64_sync_handler+0xcc/0xe4 [ 76.412653][ T5148] el0t_64_sync+0x1a0/0x1a4 [ 76.416283][ T5148] ------------[ cut here ]------------ [ 76.417281][ T5148] WARNING: CPU: 1 PID: 5148 at fs/btrfs/inode.c:6776 btrfs_add_link+0x718/0xa9c [ 76.418793][ T5148] Modules linked in: [ 76.419410][ T5148] CPU: 1 PID: 5148 Comm: syz.0.23 Tainted: G W syzkaller #0 [ 76.420749][ T5148] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/18/2026 [ 76.422362][ T5148] pstate: 62400005 (nZCv daif +PAN -UAO +TCO -DIT -SSBS BTYPE=--) [ 76.423647][ T5148] pc : btrfs_add_link+0x718/0xa9c [ 76.424480][ T5148] lr : btrfs_add_link+0x718/0xa9c [ 76.425333][ T5148] sp : ffff8000207a7580 [ 76.426051][ T5148] x29: ffff8000207a7680 x28: ffff0000deab8d10 x27: 0000000000000108 [ 76.427382][ T5148] x26: 00000000fffffff4 x25: 0000000000000000 x24: dfff800000000000 [ 76.428679][ T5148] x23: 0000000000000014 x22: 1fffe0001bd571ad x21: ffff7000040f4eb8 [ 76.429851][ T5148] x20: 00000000fffffff4 x19: ffff0000deab8d68 x18: 0000000000000001 [ 76.431122][ T5148] x17: 0000000000000000 x16: ffff80001125f448 x15: 00000000ffffffff [ 76.432361][ T5148] x14: 0000000000000001 x13: 1fffe000341f47ab x12: 0000000000ff0100 [ 76.433518][ T5148] x11: 0000000000000000 x10: 0000000000000000 x9 : d0eb28e8e1a54700 [ 76.434733][ T5148] x8 : d0eb28e8e1a54700 x7 : 0000000000000001 x6 : 0000000000000001 [ 76.435937][ T5148] x5 : ffff8000207a6e98 x4 : ffff80001437f3e0 x3 : ffff800008509220 [ 76.437206][ T5148] x2 : 0000000000000001 x1 : 0000000100000000 x0 : 0000000000000026 [ 76.438373][ T5148] Call trace: [ 76.438836][ T5148] btrfs_add_link+0x718/0xa9c [ 76.439598][ T5148] btrfs_create+0x468/0x514 [ 76.440292][ T5148] path_openat+0xe18/0x2718 [ 76.440951][ T5148] do_filp_open+0x184/0x368 [ 76.441642][ T5148] do_sys_openat2+0x134/0x3f4 [ 76.442330][ T5148] __arm64_sys_openat+0x118/0x14c [ 76.443060][ T5148] invoke_syscall+0x98/0x2b0 [ 76.443749][ T5148] el0_svc_common+0x138/0x258 [ 76.444461][ T5148] do_el0_svc+0x58/0x13c [ 76.445149][ T5148] el0_svc+0x78/0x1d0 [ 76.445803][ T5148] el0t_64_sync_handler+0xcc/0xe4 [ 76.446613][ T5148] el0t_64_sync+0x1a0/0x1a4 [ 76.447302][ T5148] irq event stamp: 79816 [ 76.447926][ T5148] hardirqs last enabled at (79815): [] __up_console_sem+0xb4/0xfc [ 76.449456][ T5148] hardirqs last disabled at (79816): [] el1_dbg+0x24/0x80 [ 76.450810][ T5148] softirqs last enabled at (79796): [] handle_softirqs+0xa40/0xbe4 [ 76.452357][ T5148] softirqs last disabled at (79729): [] __irq_exit_rcu+0x240/0x43c [ 76.453934][ T5148] ---[ end trace a09483aa755ef158 ]--- [ 76.456845][ T5148] BTRFS: error (device loop0) in btrfs_add_link:6776: errno=-12 Out of memory [ 76.634735][ T5170] loop0: detected capacity change from 0 to 32768 [ 76.638013][ T4060] Bluetooth: hci1: command 0x041b tx timeout [ 76.669124][ T5170] BTRFS: device fsid ed167579-eb65-4e76-9a50-61ac97e9b59d devid 1 transid 8 /dev/loop0 scanned by syz.0.24 (5170) [ 76.699291][ T5170] FAULT_INJECTION: forcing a failure. [ 76.699291][ T5170] name failslab, interval 1, probability 0, space 0, times 0 [ 76.701330][ T5170] CPU: 0 PID: 5170 Comm: syz.0.24 Tainted: G W syzkaller #0 [ 76.702649][ T5170] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/18/2026 [ 76.704351][ T5170] Call trace: [ 76.704909][ T5170] dump_backtrace+0x0/0x458 [ 76.705655][ T5170] show_stack+0x2c/0x3c [ 76.706379][ T5170] __dump_stack+0x30/0x40 [ 76.707116][ T5170] dump_stack_lvl+0xf4/0x15c [ 76.707885][ T5170] dump_stack+0x1c/0x5c [ 76.708681][ T5170] should_fail+0x3bc/0x514 [ 76.709421][ T5170] __should_failslab+0xbc/0x10c [ 76.710189][ T5170] should_failslab+0x10/0x28 [ 76.710928][ T5170] slab_pre_alloc_hook+0x64/0xe8 [ 76.711727][ T5170] kmem_cache_alloc+0x94/0x3d4 [ 76.712529][ T5170] btrfs_get_or_create_delayed_node+0x114/0x4a8 [ 76.713606][ T5170] btrfs_delayed_update_inode+0x3c/0x1b68 [ 76.714541][ T5170] btrfs_update_inode+0x210/0x3d4 [ 76.715342][ T5170] btrfs_create+0x364/0x514 [ 76.716050][ T5170] path_openat+0xe18/0x2718 [ 76.716825][ T5170] do_filp_open+0x184/0x368 [ 76.717618][ T5170] do_sys_openat2+0x134/0x3f4 [ 76.718403][ T5170] __arm64_sys_openat+0x118/0x14c [ 76.719328][ T5170] invoke_syscall+0x98/0x2b0 [ 76.720100][ T5170] el0_svc_common+0x138/0x258 [ 76.720877][ T5170] do_el0_svc+0x58/0x13c [ 76.721606][ T5170] el0_svc+0x78/0x1d0 [ 76.722282][ T5170] el0t_64_sync_handler+0xcc/0xe4 [ 76.723079][ T5170] el0t_64_sync+0x1a0/0x1a4 [ 76.899157][ T5192] BTRFS: device fsid ed167579-eb65-4e76-9a50-61ac97e9b59d devid 1 transid 8 /dev/loop0 scanned by syz.0.25 (5192) [ 76.917665][ T5192] FAULT_INJECTION: forcing a failure. [ 76.917665][ T5192] name failslab, interval 1, probability 0, space 0, times 0 [ 76.920943][ T5192] CPU: 0 PID: 5192 Comm: syz.0.25 Tainted: G W syzkaller #0 [ 76.922358][ T5192] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/18/2026 [ 76.924085][ T5192] Call trace: [ 76.924624][ T5192] dump_backtrace+0x0/0x458 [ 76.925413][ T5192] show_stack+0x2c/0x3c [ 76.926121][ T5192] __dump_stack+0x30/0x40 [ 76.926888][ T5192] dump_stack_lvl+0xf4/0x15c [ 76.927639][ T5192] dump_stack+0x1c/0x5c [ 76.928307][ T5192] should_fail+0x3bc/0x514 [ 76.929033][ T5192] __should_failslab+0xbc/0x10c [ 76.929862][ T5192] should_failslab+0x10/0x28 [ 76.930622][ T5192] slab_pre_alloc_hook+0x64/0xe8 [ 76.931467][ T5192] kmem_cache_alloc+0x94/0x3d4 [ 76.932256][ T5192] btrfs_alloc_path+0x5c/0x68 [ 76.933121][ T5192] btrfs_insert_dir_item+0x184/0x3e8 [ 76.934001][ T5192] btrfs_add_link+0x2b0/0xa9c [ 76.934833][ T5192] btrfs_create+0x468/0x514 [ 76.935603][ T5192] path_openat+0xe18/0x2718 [ 76.936319][ T5192] do_filp_open+0x184/0x368 [ 76.937084][ T5192] do_sys_openat2+0x134/0x3f4 [ 76.937854][ T5192] __arm64_sys_openat+0x118/0x14c [ 76.938750][ T5192] invoke_syscall+0x98/0x2b0 [ 76.939532][ T5192] el0_svc_common+0x138/0x258 [ 76.940393][ T5192] do_el0_svc+0x58/0x13c [ 76.941112][ T5192] el0_svc+0x78/0x1d0 [ 76.941835][ T5192] el0t_64_sync_handler+0xcc/0xe4 [ 76.942701][ T5192] el0t_64_sync+0x1a0/0x1a4 [ 76.946047][ T5192] ------------[ cut here ]------------ [ 76.947014][ T5192] WARNING: CPU: 0 PID: 5192 at fs/btrfs/inode.c:6776 btrfs_add_link+0x718/0xa9c [ 76.948393][ T5192] Modules linked in: [ 76.949014][ T5192] CPU: 0 PID: 5192 Comm: syz.0.25 Tainted: G W syzkaller #0 [ 76.950428][ T5192] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/18/2026 [ 76.952079][ T5192] pstate: 62400005 (nZCv daif +PAN -UAO +TCO -DIT -SSBS BTYPE=--) [ 76.953453][ T5192] pc : btrfs_add_link+0x718/0xa9c [ 76.954318][ T5192] lr : btrfs_add_link+0x718/0xa9c [ 76.955233][ T5192] sp : ffff8000208f7580 [ 76.955915][ T5192] x29: ffff8000208f7680 x28: ffff0000deabf580 x27: 0000000000000108 [ 76.957309][ T5192] x26: 00000000fffffff4 x25: 0000000000000000 x24: dfff800000000000 [ 76.958631][ T5192] x23: 0000000000000014 x22: 1fffe0001bd57ebb x21: ffff70000411eeb8 [ 76.960033][ T5192] x20: 00000000fffffff4 x19: ffff0000deabf5d8 x18: 0000000000000001 [ 76.961368][ T5192] x17: 0000000000000000 x16: ffff80001125f448 x15: 00000000ffffffff [ 76.962706][ T5192] x14: 0000000000000001 x13: 1fffe000341f05ab x12: 0000000000ff0100 [ 76.964034][ T5192] x11: 0000000000000000 x10: 0000000000000000 x9 : 56f245aa7d872300 [ 76.965430][ T5192] x8 : 56f245aa7d872300 x7 : 0000000000000001 x6 : 0000000000000001 [ 76.966801][ T5192] x5 : ffff8000208f6e98 x4 : ffff80001437f3e0 x3 : ffff800008509220 [ 76.968142][ T5192] x2 : 0000000000000001 x1 : 0000000100000000 x0 : 0000000000000026 [ 76.969529][ T5192] Call trace: [ 76.970114][ T5192] btrfs_add_link+0x718/0xa9c [ 76.970930][ T5192] btrfs_create+0x468/0x514 [ 76.971652][ T5192] path_openat+0xe18/0x2718 [ 76.972373][ T5192] do_filp_open+0x184/0x368 [ 76.973145][ T5192] do_sys_openat2+0x134/0x3f4 [ 76.973890][ T5192] __arm64_sys_openat+0x118/0x14c [ 76.974687][ T5192] invoke_syscall+0x98/0x2b0 [ 76.975484][ T5192] el0_svc_common+0x138/0x258 [ 76.976237][ T5192] do_el0_svc+0x58/0x13c [ 76.977034][ T5192] el0_svc+0x78/0x1d0 [ 76.977740][ T5192] el0t_64_sync_handler+0xcc/0xe4 [ 76.978708][ T5192] el0t_64_sync+0x1a0/0x1a4 [ 76.979503][ T5192] irq event stamp: 79970 [ 76.980228][ T5192] hardirqs last enabled at (79969): [] __up_console_sem+0xb4/0xfc [ 76.981748][ T5192] hardirqs last disabled at (79970): [] el1_dbg+0x24/0x80 [ 76.983152][ T5192] softirqs last enabled at (79950): [] handle_softirqs+0xa40/0xbe4 [ 76.984894][ T5192] softirqs last disabled at (79929): [] __irq_exit_rcu+0x240/0x43c [ 76.986423][ T5192] ---[ end trace a09483aa755ef159 ]--- [ 76.992596][ T5192] BTRFS: error (device loop0) in btrfs_add_link:6776: errno=-12 Out of memory [ 77.182904][ T5214] BTRFS: device fsid ed167579-eb65-4e76-9a50-61ac97e9b59d devid 1 transid 8 /dev/loop0 scanned by syz.0.26 (5214) [ 77.208564][ T5214] FAULT_INJECTION: forcing a failure. [ 77.208564][ T5214] name failslab, interval 1, probability 0, space 0, times 0 [ 77.210703][ T5214] CPU: 1 PID: 5214 Comm: syz.0.26 Tainted: G W syzkaller #0 [ 77.211996][ T5214] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/18/2026 [ 77.213481][ T5214] Call trace: [ 77.213996][ T5214] dump_backtrace+0x0/0x458 [ 77.214760][ T5214] show_stack+0x2c/0x3c [ 77.215444][ T5214] __dump_stack+0x30/0x40 [ 77.216174][ T5214] dump_stack_lvl+0xf4/0x15c [ 77.216951][ T5214] dump_stack+0x1c/0x5c [ 77.217662][ T5214] should_fail+0x3bc/0x514 [ 77.218374][ T5214] __should_failslab+0xbc/0x10c [ 77.219235][ T5214] should_failslab+0x10/0x28 [ 77.220021][ T5214] slab_pre_alloc_hook+0x64/0xe8 [ 77.220927][ T5214] kmem_cache_alloc+0x94/0x3d4 [ 77.221798][ T5214] btrfs_get_or_create_delayed_node+0x114/0x4a8 [ 77.222783][ T5214] btrfs_delayed_update_inode+0x3c/0x1b68 [ 77.223801][ T5214] btrfs_update_inode+0x210/0x3d4 [ 77.224657][ T5214] btrfs_create+0x364/0x514 [ 77.225374][ T5214] path_openat+0xe18/0x2718 [ 77.226136][ T5214] do_filp_open+0x184/0x368 [ 77.226832][ T5214] do_sys_openat2+0x134/0x3f4 [ 77.227676][ T5214] __arm64_sys_openat+0x118/0x14c [ 77.228520][ T5214] invoke_syscall+0x98/0x2b0 [ 77.229363][ T5214] el0_svc_common+0x138/0x258 [ 77.230149][ T5214] do_el0_svc+0x58/0x13c [ 77.230878][ T5214] el0_svc+0x78/0x1d0 [ 77.231581][ T5214] el0t_64_sync_handler+0xcc/0xe4 [ 77.232454][ T5214] el0t_64_sync+0x1a0/0x1a4 [ 77.435546][ T5236] BTRFS: device fsid ed167579-eb65-4e76-9a50-61ac97e9b59d devid 1 transid 8 /dev/loop0 scanned by syz.0.27 (5236) [ 77.512151][ T5236] FAULT_INJECTION: forcing a failure. [ 77.512151][ T5236] name failslab, interval 1, probability 0, space 0, times 0 [ 77.514181][ T5236] CPU: 1 PID: 5236 Comm: syz.0.27 Tainted: G W syzkaller #0 [ 77.515539][ T5236] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/18/2026 [ 77.517048][ T5236] Call trace: [ 77.517554][ T5236] dump_backtrace+0x0/0x458 [ 77.518222][ T5236] show_stack+0x2c/0x3c [ 77.518814][ T5236] __dump_stack+0x30/0x40 [ 77.519411][ T5236] dump_stack_lvl+0xf4/0x15c [ 77.520100][ T5236] dump_stack+0x1c/0x5c [ 77.520809][ T5236] should_fail+0x3bc/0x514 [ 77.521533][ T5236] __should_failslab+0xbc/0x10c [ 77.522308][ T5236] should_failslab+0x10/0x28 [ 77.523037][ T5236] slab_pre_alloc_hook+0x64/0xe8 [ 77.523879][ T5236] kmem_cache_alloc+0x94/0x3d4 [ 77.524737][ T5236] btrfs_alloc_path+0x5c/0x68 [ 77.525532][ T5236] btrfs_insert_dir_item+0x184/0x3e8 [ 77.526457][ T5236] btrfs_add_link+0x2b0/0xa9c [ 77.527246][ T5236] btrfs_create+0x468/0x514 [ 77.528008][ T5236] path_openat+0xe18/0x2718 [ 77.528835][ T5236] do_filp_open+0x184/0x368 [ 77.529669][ T5236] do_sys_openat2+0x134/0x3f4 [ 77.530365][ T5236] __arm64_sys_openat+0x118/0x14c [ 77.531129][ T5236] invoke_syscall+0x98/0x2b0 [ 77.531935][ T5236] el0_svc_common+0x138/0x258 [ 77.532770][ T5236] do_el0_svc+0x58/0x13c [ 77.533526][ T5236] el0_svc+0x78/0x1d0 [ 77.534174][ T5236] el0t_64_sync_handler+0xcc/0xe4 [ 77.535029][ T5236] el0t_64_sync+0x1a0/0x1a4 [ 77.538221][ T5236] ------------[ cut here ]------------ [ 77.539340][ T5236] WARNING: CPU: 1 PID: 5236 at fs/btrfs/inode.c:6776 btrfs_add_link+0x718/0xa9c [ 77.540692][ T5236] Modules linked in: [ 77.541308][ T5236] CPU: 1 PID: 5236 Comm: syz.0.27 Tainted: G W syzkaller #0 [ 77.542804][ T5236] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/18/2026 [ 77.544513][ T5236] pstate: 62400005 (nZCv daif +PAN -UAO +TCO -DIT -SSBS BTYPE=--) [ 77.545833][ T5236] pc : btrfs_add_link+0x718/0xa9c [ 77.546717][ T5236] lr : btrfs_add_link+0x718/0xa9c [ 77.547578][ T5236] sp : ffff800020f27580 [ 77.548307][ T5236] x29: ffff800020f27680 x28: ffff0000deace420 x27: 0000000000000108 [ 77.549681][ T5236] x26: 00000000fffffff4 x25: 0000000000000000 x24: dfff800000000000 [ 77.551043][ T5236] x23: 0000000000000014 x22: 1fffe0001bd59c8f x21: ffff7000041e4eb8 [ 77.552358][ T5236] x20: 00000000fffffff4 x19: ffff0000deace478 x18: 0000000000000001 [ 77.553692][ T5236] x17: 0000000000000000 x16: ffff80001125f448 x15: 00000000ffffffff [ 77.555198][ T5236] x14: 0000000000000001 x13: 1fffe000341f47ab x12: 0000000000ff0100 [ 77.556593][ T5236] x11: 0000000000000000 x10: 0000000000000000 x9 : 3dfd8a03411d1800 [ 77.558063][ T5236] x8 : 3dfd8a03411d1800 x7 : 0000000000000001 x6 : 0000000000000001 [ 77.559419][ T5236] x5 : ffff800020f26e98 x4 : ffff80001437f3e0 x3 : ffff800008509220 [ 77.560916][ T5236] x2 : 0000000000000001 x1 : 0000000100000000 x0 : 0000000000000026 [ 77.562290][ T5236] Call trace: [ 77.562843][ T5236] btrfs_add_link+0x718/0xa9c [ 77.563662][ T5236] btrfs_create+0x468/0x514 [ 77.564366][ T5236] path_openat+0xe18/0x2718 [ 77.565134][ T5236] do_filp_open+0x184/0x368 [ 77.565916][ T5236] do_sys_openat2+0x134/0x3f4 [ 77.566688][ T5236] __arm64_sys_openat+0x118/0x14c [ 77.567539][ T5236] invoke_syscall+0x98/0x2b0 [ 77.568354][ T5236] el0_svc_common+0x138/0x258 [ 77.569194][ T5236] do_el0_svc+0x58/0x13c [ 77.569908][ T5236] el0_svc+0x78/0x1d0 [ 77.570630][ T5236] el0t_64_sync_handler+0xcc/0xe4 [ 77.571431][ T5236] el0t_64_sync+0x1a0/0x1a4 [ 77.572281][ T5236] irq event stamp: 81272 [ 77.573035][ T5236] hardirqs last enabled at (81271): [] __up_console_sem+0xb4/0xfc [ 77.574714][ T5236] hardirqs last disabled at (81272): [] el1_dbg+0x24/0x80 [ 77.576170][ T5236] softirqs last enabled at (81248): [] handle_softirqs+0xa40/0xbe4 [ 77.577881][ T5236] softirqs last disabled at (81167): [] __irq_exit_rcu+0x240/0x43c [ 77.579460][ T5236] ---[ end trace a09483aa755ef15a ]--- [ 77.582449][ T5236] BTRFS: error (device loop0) in btrfs_add_link:6776: errno=-12 Out of memory 1970/01/01 00:01:17 executed programs: 15 [ 77.758399][ T5258] BTRFS: device fsid ed167579-eb65-4e76-9a50-61ac97e9b59d devid 1 transid 8 /dev/loop0 scanned by syz.0.28 (5258) [ 77.829151][ T5258] FAULT_INJECTION: forcing a failure. [ 77.829151][ T5258] name failslab, interval 1, probability 0, space 0, times 0 [ 77.831239][ T5258] CPU: 1 PID: 5258 Comm: syz.0.28 Tainted: G W syzkaller #0 [ 77.832687][ T5258] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/18/2026 [ 77.834410][ T5258] Call trace: [ 77.834966][ T5258] dump_backtrace+0x0/0x458 [ 77.835772][ T5258] show_stack+0x2c/0x3c [ 77.836431][ T5258] __dump_stack+0x30/0x40 [ 77.837172][ T5258] dump_stack_lvl+0xf4/0x15c [ 77.838001][ T5258] dump_stack+0x1c/0x5c [ 77.838745][ T5258] should_fail+0x3bc/0x514 [ 77.839394][ T5258] __should_failslab+0xbc/0x10c [ 77.840231][ T5258] should_failslab+0x10/0x28 [ 77.841028][ T5258] slab_pre_alloc_hook+0x64/0xe8 [ 77.841854][ T5258] kmem_cache_alloc+0x94/0x3d4 [ 77.842701][ T5258] security_inode_alloc+0x38/0x11c [ 77.843625][ T5258] inode_init_always+0x670/0xa84 [ 77.844494][ T5258] new_inode_pseudo+0x7c/0x1fc [ 77.845334][ T5258] new_inode+0x38/0x174 [ 77.846030][ T5258] btrfs_new_inode+0x158/0x1564 [ 77.846850][ T5258] btrfs_create+0x24c/0x514 [ 77.847629][ T5258] path_openat+0xe18/0x2718 [ 77.848392][ T5258] do_filp_open+0x184/0x368 [ 77.849162][ T5258] do_sys_openat2+0x134/0x3f4 [ 77.849878][ T5258] __arm64_sys_openat+0x118/0x14c [ 77.850770][ T5258] invoke_syscall+0x98/0x2b0 [ 77.851487][ T5258] el0_svc_common+0x138/0x258 [ 77.852196][ T5258] do_el0_svc+0x58/0x13c [ 77.852919][ T5258] el0_svc+0x78/0x1d0 [ 77.853604][ T5258] el0t_64_sync_handler+0xcc/0xe4 [ 77.854460][ T5258] el0t_64_sync+0x1a0/0x1a4 [ 78.102977][ T5280] BTRFS: device fsid ed167579-eb65-4e76-9a50-61ac97e9b59d devid 1 transid 8 /dev/loop0 scanned by syz.0.29 (5280) [ 78.122177][ T5280] FAULT_INJECTION: forcing a failure. [ 78.122177][ T5280] name failslab, interval 1, probability 0, space 0, times 0 [ 78.124293][ T5280] CPU: 0 PID: 5280 Comm: syz.0.29 Tainted: G W syzkaller #0 [ 78.125692][ T5280] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/18/2026 [ 78.127385][ T5280] Call trace: [ 78.127926][ T5280] dump_backtrace+0x0/0x458 [ 78.128741][ T5280] show_stack+0x2c/0x3c [ 78.129510][ T5280] __dump_stack+0x30/0x40 [ 78.130256][ T5280] dump_stack_lvl+0xf4/0x15c [ 78.131008][ T5280] dump_stack+0x1c/0x5c [ 78.131750][ T5280] should_fail+0x3bc/0x514 [ 78.132455][ T5280] __should_failslab+0xbc/0x10c [ 78.133261][ T5280] should_failslab+0x10/0x28 [ 78.134050][ T5280] slab_pre_alloc_hook+0x64/0xe8 [ 78.134808][ T5280] kmem_cache_alloc+0x94/0x3d4 [ 78.135674][ T5280] btrfs_get_or_create_delayed_node+0x114/0x4a8 [ 78.136819][ T5280] btrfs_delayed_update_inode+0x3c/0x1b68 [ 78.137861][ T5280] btrfs_update_inode+0x210/0x3d4 [ 78.138717][ T5280] btrfs_create+0x364/0x514 [ 78.139475][ T5280] path_openat+0xe18/0x2718 [ 78.140244][ T5280] do_filp_open+0x184/0x368 [ 78.140946][ T5280] do_sys_openat2+0x134/0x3f4 [ 78.141690][ T5280] __arm64_sys_openat+0x118/0x14c [ 78.142663][ T5280] invoke_syscall+0x98/0x2b0 [ 78.143467][ T5280] el0_svc_common+0x138/0x258 [ 78.144313][ T5280] do_el0_svc+0x58/0x13c [ 78.145068][ T5280] el0_svc+0x78/0x1d0 [ 78.145740][ T5280] el0t_64_sync_handler+0xcc/0xe4 [ 78.146578][ T5280] el0t_64_sync+0x1a0/0x1a4 [ 78.187625][ T4474] BTRFS: device fsid ed167579-eb65-4e76-9a50-61ac97e9b59d devid 1 transid 12 /dev/loop0 scanned by udevd (4474) [ 78.321632][ T5301] FAULT_INJECTION: forcing a failure. [ 78.321632][ T5301] name failslab, interval 1, probability 0, space 0, times 0 [ 78.323851][ T5301] CPU: 0 PID: 5301 Comm: syz.0.30 Tainted: G W syzkaller #0 [ 78.325231][ T5301] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/18/2026 [ 78.326898][ T5301] Call trace: [ 78.327549][ T5301] dump_backtrace+0x0/0x458 [ 78.328352][ T5301] show_stack+0x2c/0x3c [ 78.329093][ T5301] __dump_stack+0x30/0x40 [ 78.329823][ T5301] dump_stack_lvl+0xf4/0x15c [ 78.330593][ T5301] dump_stack+0x1c/0x5c [ 78.331316][ T5301] should_fail+0x3bc/0x514 [ 78.332055][ T5301] __should_failslab+0xbc/0x10c [ 78.332876][ T5301] should_failslab+0x10/0x28 [ 78.333677][ T5301] slab_pre_alloc_hook+0x64/0xe8 [ 78.334501][ T5301] kmem_cache_alloc+0x94/0x3d4 [ 78.335342][ T5301] btrfs_alloc_path+0x5c/0x68 [ 78.336112][ T5301] btrfs_insert_dir_item+0x184/0x3e8 [ 78.337009][ T5301] btrfs_add_link+0x2b0/0xa9c [ 78.337780][ T5301] btrfs_create+0x468/0x514 [ 78.338542][ T5301] path_openat+0xe18/0x2718 [ 78.339278][ T5301] do_filp_open+0x184/0x368 [ 78.340047][ T5301] do_sys_openat2+0x134/0x3f4 [ 78.340874][ T5301] __arm64_sys_openat+0x118/0x14c [ 78.341735][ T5301] invoke_syscall+0x98/0x2b0 [ 78.342518][ T5301] el0_svc_common+0x138/0x258 [ 78.343327][ T5301] do_el0_svc+0x58/0x13c [ 78.344047][ T5301] el0_svc+0x78/0x1d0 [ 78.344714][ T5301] el0t_64_sync_handler+0xcc/0xe4 [ 78.345561][ T5301] el0t_64_sync+0x1a0/0x1a4 [ 78.348028][ T5301] ------------[ cut here ]------------ [ 78.349026][ T5301] WARNING: CPU: 0 PID: 5301 at fs/btrfs/inode.c:6776 btrfs_add_link+0x718/0xa9c [ 78.350486][ T5301] Modules linked in: [ 78.351147][ T5301] CPU: 0 PID: 5301 Comm: syz.0.30 Tainted: G W syzkaller #0 [ 78.352534][ T5301] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/18/2026 [ 78.354034][ T5301] pstate: 62400005 (nZCv daif +PAN -UAO +TCO -DIT -SSBS BTYPE=--) [ 78.355310][ T5301] pc : btrfs_add_link+0x718/0xa9c [ 78.356116][ T5301] lr : btrfs_add_link+0x718/0xa9c [ 78.356936][ T5301] sp : ffff800021217580 [ 78.357645][ T5301] x29: ffff800021217680 x28: ffff0000deab8630 x27: 0000000000000108 [ 78.358960][ T5301] x26: 00000000fffffff4 x25: 0000000000000000 x24: dfff800000000000 [ 78.360309][ T5301] x23: 0000000000000014 x22: 1fffe0001bd570d1 x21: ffff700004242eb8 [ 78.361683][ T5301] x20: 00000000fffffff4 x19: ffff0000deab8688 x18: 0000000000000001 [ 78.363048][ T5301] x17: 0000000000000000 x16: ffff80001125f448 x15: 00000000ffffffff [ 78.364433][ T5301] x14: 0000000000000001 x13: 1fffe000341f05ab x12: 0000000000ff0100 [ 78.365881][ T5301] x11: 0000000000000000 x10: 0000000000000000 x9 : b10acb8bcfa86100 [ 78.367305][ T5301] x8 : b10acb8bcfa86100 x7 : 0000000000000001 x6 : 0000000000000001 [ 78.368630][ T5301] x5 : ffff800021216e98 x4 : ffff80001437f3e0 x3 : ffff800008509220 [ 78.370013][ T5301] x2 : 0000000000000001 x1 : 0000000100000000 x0 : 0000000000000026 [ 78.371411][ T5301] Call trace: [ 78.371967][ T5301] btrfs_add_link+0x718/0xa9c [ 78.372728][ T5301] btrfs_create+0x468/0x514 [ 78.373509][ T5301] path_openat+0xe18/0x2718 [ 78.374258][ T5301] do_filp_open+0x184/0x368 [ 78.375078][ T5301] do_sys_openat2+0x134/0x3f4 [ 78.375838][ T5301] __arm64_sys_openat+0x118/0x14c [ 78.376694][ T5301] invoke_syscall+0x98/0x2b0 [ 78.377485][ T5301] el0_svc_common+0x138/0x258 [ 78.378329][ T5301] do_el0_svc+0x58/0x13c [ 78.379049][ T5301] el0_svc+0x78/0x1d0 [ 78.379625][ T5301] el0t_64_sync_handler+0xcc/0xe4 [ 78.380379][ T5301] el0t_64_sync+0x1a0/0x1a4 [ 78.381069][ T5301] irq event stamp: 79898 [ 78.381668][ T5301] hardirqs last enabled at (79897): [] __up_console_sem+0xb4/0xfc [ 78.383097][ T5301] hardirqs last disabled at (79898): [] el1_dbg+0x24/0x80 [ 78.384423][ T5301] softirqs last enabled at (79878): [] handle_softirqs+0xa40/0xbe4 [ 78.386005][ T5301] softirqs last disabled at (79829): [] __irq_exit_rcu+0x240/0x43c [ 78.387600][ T5301] ---[ end trace a09483aa755ef15b ]--- [ 78.389989][ T5301] BTRFS: error (device loop0) in btrfs_add_link:6776: errno=-12 Out of memory [ 78.599020][ T5324] BTRFS: device fsid ed167579-eb65-4e76-9a50-61ac97e9b59d devid 1 transid 8 /dev/loop0 scanned by syz.0.31 (5324) [ 78.620210][ T5324] FAULT_INJECTION: forcing a failure. [ 78.620210][ T5324] name failslab, interval 1, probability 0, space 0, times 0 [ 78.622281][ T5324] CPU: 1 PID: 5324 Comm: syz.0.31 Tainted: G W syzkaller #0 [ 78.623751][ T5324] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/18/2026 [ 78.625410][ T5324] Call trace: [ 78.625891][ T5324] dump_backtrace+0x0/0x458 [ 78.626641][ T5324] show_stack+0x2c/0x3c [ 78.627342][ T5324] __dump_stack+0x30/0x40 [ 78.628101][ T5324] dump_stack_lvl+0xf4/0x15c [ 78.628927][ T5324] dump_stack+0x1c/0x5c [ 78.629648][ T5324] should_fail+0x3bc/0x514 [ 78.630428][ T5324] __should_failslab+0xbc/0x10c [ 78.631258][ T5324] should_failslab+0x10/0x28 [ 78.632050][ T5324] slab_pre_alloc_hook+0x64/0xe8 [ 78.632934][ T5324] kmem_cache_alloc+0x94/0x3d4 [ 78.633756][ T5324] btrfs_alloc_path+0x5c/0x68 [ 78.634550][ T5324] btrfs_insert_dir_item+0x184/0x3e8 [ 78.635454][ T5324] btrfs_add_link+0x2b0/0xa9c [ 78.636226][ T5324] btrfs_create+0x468/0x514 [ 78.636967][ T5324] path_openat+0xe18/0x2718 [ 78.637737][ T5324] do_filp_open+0x184/0x368 [ 78.638425][ T5324] do_sys_openat2+0x134/0x3f4 [ 78.639208][ T5324] __arm64_sys_openat+0x118/0x14c [ 78.639990][ T5324] invoke_syscall+0x98/0x2b0 [ 78.640723][ T5324] el0_svc_common+0x138/0x258 [ 78.641480][ T5324] do_el0_svc+0x58/0x13c [ 78.642152][ T5324] el0_svc+0x78/0x1d0 [ 78.642798][ T5324] el0t_64_sync_handler+0xcc/0xe4 [ 78.643579][ T5324] el0t_64_sync+0x1a0/0x1a4 [ 78.649821][ T5324] ------------[ cut here ]------------ [ 78.650864][ T5324] WARNING: CPU: 1 PID: 5324 at fs/btrfs/inode.c:6776 btrfs_add_link+0x718/0xa9c [ 78.652393][ T5324] Modules linked in: [ 78.653113][ T5324] CPU: 1 PID: 5324 Comm: syz.0.31 Tainted: G W syzkaller #0 [ 78.654684][ T5324] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/18/2026 [ 78.656378][ T5324] pstate: 62400005 (nZCv daif +PAN -UAO +TCO -DIT -SSBS BTYPE=--) [ 78.657711][ T5324] pc : btrfs_add_link+0x718/0xa9c [ 78.658528][ T5324] lr : btrfs_add_link+0x718/0xa9c [ 78.659299][ T5324] sp : ffff800021377580 [ 78.659924][ T5324] x29: ffff800021377680 x28: ffff0000deace8f0 x27: 0000000000000108 [ 78.661349][ T5324] x26: 00000000fffffff4 x25: 0000000000000000 x24: dfff800000000000 [ 78.662812][ T5324] x23: 0000000000000014 x22: 1fffe0001bd59d29 x21: ffff70000426eeb8 [ 78.664202][ T5324] x20: 00000000fffffff4 x19: ffff0000deace948 x18: 0000000000000001 [ 78.665589][ T5324] x17: 0000000000000000 x16: ffff80001125f448 x15: 00000000ffffffff [ 78.666950][ T5324] x14: 0000000000000001 x13: 1fffe000341f47ab x12: 0000000000ff0100 [ 78.668259][ T5324] x11: 0000000000000000 x10: 0000000000000000 x9 : 0dbd5cdc73bfba00 [ 78.669702][ T5324] x8 : 0dbd5cdc73bfba00 x7 : 0000000000000001 x6 : 0000000000000001 [ 78.671135][ T5324] x5 : ffff800021376e98 x4 : ffff80001437f3e0 x3 : ffff800008509220 [ 78.672518][ T5324] x2 : 0000000000000001 x1 : 0000000100000000 x0 : 0000000000000026 [ 78.673918][ T5324] Call trace: [ 78.674514][ T5324] btrfs_add_link+0x718/0xa9c [ 78.675261][ T5324] btrfs_create+0x468/0x514 [ 78.676017][ T5324] path_openat+0xe18/0x2718 [ 78.676771][ T5324] do_filp_open+0x184/0x368 [ 78.677520][ T5324] do_sys_openat2+0x134/0x3f4 [ 78.678307][ T5324] __arm64_sys_openat+0x118/0x14c [ 78.679142][ T5324] invoke_syscall+0x98/0x2b0 [ 78.679907][ T5324] el0_svc_common+0x138/0x258 [ 78.680704][ T5324] do_el0_svc+0x58/0x13c [ 78.681405][ T5324] el0_svc+0x78/0x1d0 [ 78.682039][ T5324] el0t_64_sync_handler+0xcc/0xe4 [ 78.682842][ T5324] el0t_64_sync+0x1a0/0x1a4 [ 78.683588][ T5324] irq event stamp: 79704 [ 78.684289][ T5324] hardirqs last enabled at (79703): [] __up_console_sem+0xb4/0xfc [ 78.685842][ T5324] hardirqs last disabled at (79704): [] el1_dbg+0x24/0x80 [ 78.687329][ T5324] softirqs last enabled at (79684): [] handle_softirqs+0xa40/0xbe4 [ 78.688975][ T5324] softirqs last disabled at (79517): [] __irq_exit_rcu+0x240/0x43c [ 78.690596][ T5324] ---[ end trace a09483aa755ef15c ]--- [ 78.695115][ T5324] BTRFS: error (device loop0) in btrfs_add_link:6776: errno=-12 Out of memory [ 78.718291][ T4140] Bluetooth: hci1: command 0x040f tx timeout [ 78.858043][ T5346] set_capacity_and_notify: 7 callbacks suppressed [ 78.858052][ T5346] loop0: detected capacity change from 0 to 32768 [ 78.921246][ T5346] BTRFS: device fsid ed167579-eb65-4e76-9a50-61ac97e9b59d devid 1 transid 8 /dev/loop0 scanned by syz.0.32 (5346) [ 78.925780][ T5346] btrfs_printk: 166 callbacks suppressed [ 78.925791][ T5346] BTRFS info (device loop0): using sha256 (sha256-ce) checksum algorithm [ 78.928204][ T5346] BTRFS info (device loop0): setting nodatacow, compression disabled [ 78.929634][ T5346] BTRFS info (device loop0): setting datacow [ 78.930566][ T5346] BTRFS info (device loop0): doing ref verification [ 78.931768][ T5346] BTRFS info (device loop0): force clearing of disk cache [ 78.932987][ T5346] BTRFS info (device loop0): turning off barriers [ 78.933999][ T5346] BTRFS info (device loop0): use zlib compression, level 3 [ 78.935098][ T5346] BTRFS info (device loop0): using free space tree [ 78.936125][ T5346] BTRFS info (device loop0): has skinny extents [ 78.948213][ T5346] BTRFS info (device loop0): clearing free space tree [ 78.949306][ T5346] BTRFS info (device loop0): clearing compat-ro feature flag for FREE_SPACE_TREE (0x1) [ 78.950868][ T5346] BTRFS info (device loop0): clearing compat-ro feature flag for FREE_SPACE_TREE_VALID (0x2) [ 78.954117][ T5346] BTRFS info (device loop0): creating free space tree [ 78.955543][ T5346] BTRFS info (device loop0): setting compat-ro feature flag for FREE_SPACE_TREE (0x1) [ 78.956916][ T5346] BTRFS info (device loop0): setting compat-ro feature flag for FREE_SPACE_TREE_VALID (0x2) [ 78.961830][ T5346] FAULT_INJECTION: forcing a failure. [ 78.961830][ T5346] name failslab, interval 1, probability 0, space 0, times 0 [ 78.963805][ T5346] CPU: 0 PID: 5346 Comm: syz.0.32 Tainted: G W syzkaller #0 [ 78.965126][ T5346] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/18/2026 [ 78.966763][ T5346] Call trace: [ 78.967265][ T5346] dump_backtrace+0x0/0x458 [ 78.967984][ T5346] show_stack+0x2c/0x3c [ 78.968695][ T5346] __dump_stack+0x30/0x40 [ 78.969441][ T5346] dump_stack_lvl+0xf4/0x15c [ 78.970201][ T5346] dump_stack+0x1c/0x5c [ 78.970911][ T5346] should_fail+0x3bc/0x514 [ 78.971682][ T5346] __should_failslab+0xbc/0x10c [ 78.972478][ T5346] should_failslab+0x10/0x28 [ 78.973206][ T5346] slab_pre_alloc_hook+0x64/0xe8 [ 78.973990][ T5346] kmem_cache_alloc+0x94/0x3d4 [ 78.974821][ T5346] btrfs_alloc_path+0x5c/0x68 [ 78.975696][ T5346] btrfs_insert_dir_item+0x184/0x3e8 [ 78.976583][ T5346] btrfs_add_link+0x2b0/0xa9c [ 78.977364][ T5346] btrfs_create+0x468/0x514 [ 78.978130][ T5346] path_openat+0xe18/0x2718 [ 78.978903][ T5346] do_filp_open+0x184/0x368 [ 78.979625][ T5346] do_sys_openat2+0x134/0x3f4 [ 78.980406][ T5346] __arm64_sys_openat+0x118/0x14c [ 78.981239][ T5346] invoke_syscall+0x98/0x2b0 [ 78.981998][ T5346] el0_svc_common+0x138/0x258 [ 78.982756][ T5346] do_el0_svc+0x58/0x13c [ 78.983493][ T5346] el0_svc+0x78/0x1d0 [ 78.984197][ T5346] el0t_64_sync_handler+0xcc/0xe4 [ 78.985043][ T5346] el0t_64_sync+0x1a0/0x1a4 [ 78.987471][ T5346] ------------[ cut here ]------------ [ 78.988542][ T5346] WARNING: CPU: 0 PID: 5346 at fs/btrfs/inode.c:6776 btrfs_add_link+0x718/0xa9c [ 78.989891][ T5346] Modules linked in: [ 78.990526][ T5346] CPU: 0 PID: 5346 Comm: syz.0.32 Tainted: G W syzkaller #0 [ 78.991854][ T5346] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/18/2026 [ 78.993474][ T5346] pstate: 62400005 (nZCv daif +PAN -UAO +TCO -DIT -SSBS BTYPE=--) [ 78.994747][ T5346] pc : btrfs_add_link+0x718/0xa9c [ 78.995573][ T5346] lr : btrfs_add_link+0x718/0xa9c [ 78.996347][ T5346] sp : ffff800021557580 [ 78.996971][ T5346] x29: ffff800021557680 x28: ffff0000deab8370 x27: 0000000000000108 [ 78.998167][ T5346] x26: 00000000fffffff4 x25: 0000000000000000 x24: dfff800000000000 [ 78.999397][ T5346] x23: 0000000000000014 x22: 1fffe0001bd57079 x21: ffff7000042aaeb8 [ 79.000762][ T5346] x20: 00000000fffffff4 x19: ffff0000deab83c8 x18: 0000000000000001 [ 79.002081][ T5346] x17: 0000000000000000 x16: ffff80001125f448 x15: 00000000ffffffff [ 79.003343][ T5346] x14: 0000000000000001 x13: 1fffe000341f05ab x12: 0000000000ff0100 [ 79.004751][ T5346] x11: 0000000000000000 x10: 0000000000000000 x9 : e6271fbbeac16f00 [ 79.006128][ T5346] x8 : e6271fbbeac16f00 x7 : 0000000000000001 x6 : 0000000000000001 [ 79.007553][ T5346] x5 : ffff800021556e98 x4 : ffff80001437f3e0 x3 : ffff800008509220 [ 79.008841][ T5346] x2 : 0000000000000001 x1 : 0000000100000000 x0 : 0000000000000026 [ 79.010234][ T5346] Call trace: [ 79.010798][ T5346] btrfs_add_link+0x718/0xa9c [ 79.011551][ T5346] btrfs_create+0x468/0x514 [ 79.012264][ T5346] path_openat+0xe18/0x2718 [ 79.012994][ T5346] do_filp_open+0x184/0x368 [ 79.013718][ T5346] do_sys_openat2+0x134/0x3f4 [ 79.014507][ T5346] __arm64_sys_openat+0x118/0x14c [ 79.015335][ T5346] invoke_syscall+0x98/0x2b0 [ 79.016097][ T5346] el0_svc_common+0x138/0x258 [ 79.016867][ T5346] do_el0_svc+0x58/0x13c [ 79.017552][ T5346] el0_svc+0x78/0x1d0 [ 79.018209][ T5346] el0t_64_sync_handler+0xcc/0xe4 [ 79.018954][ T5346] el0t_64_sync+0x1a0/0x1a4 [ 79.019674][ T5346] irq event stamp: 79956 [ 79.020376][ T5346] hardirqs last enabled at (79955): [] __up_console_sem+0xb4/0xfc [ 79.021858][ T5346] hardirqs last disabled at (79956): [] el1_dbg+0x24/0x80 [ 79.023242][ T5346] softirqs last enabled at (79944): [] handle_softirqs+0xa40/0xbe4 [ 79.024764][ T5346] softirqs last disabled at (79937): [] __irq_exit_rcu+0x240/0x43c [ 79.026367][ T5346] ---[ end trace a09483aa755ef15d ]--- [ 79.029640][ T5346] BTRFS: error (device loop0) in btrfs_add_link:6776: errno=-12 Out of memory [ 79.031038][ T5346] BTRFS info (device loop0): forced readonly [ 79.163936][ T5368] loop0: detected capacity change from 0 to 32768 [ 79.200780][ T5368] BTRFS: device fsid ed167579-eb65-4e76-9a50-61ac97e9b59d devid 1 transid 8 /dev/loop0 scanned by syz.0.33 (5368) [ 79.203744][ T5368] BTRFS info (device loop0): using sha256 (sha256-ce) checksum algorithm [ 79.205159][ T5368] BTRFS info (device loop0): setting nodatacow, compression disabled [ 79.206547][ T5368] BTRFS info (device loop0): setting datacow [ 79.207587][ T5368] BTRFS info (device loop0): doing ref verification [ 79.208979][ T5368] BTRFS info (device loop0): force clearing of disk cache [ 79.210146][ T5368] BTRFS info (device loop0): turning off barriers [ 79.211295][ T5368] BTRFS info (device loop0): use zlib compression, level 3 [ 79.212447][ T5368] BTRFS info (device loop0): using free space tree [ 79.213527][ T5368] BTRFS info (device loop0): has skinny extents [ 79.221438][ T5368] BTRFS info (device loop0): clearing free space tree [ 79.222538][ T5368] BTRFS info (device loop0): clearing compat-ro feature flag for FREE_SPACE_TREE (0x1) [ 79.224002][ T5368] BTRFS info (device loop0): clearing compat-ro feature flag for FREE_SPACE_TREE_VALID (0x2) [ 79.227467][ T5368] BTRFS info (device loop0): creating free space tree [ 79.229920][ T5368] BTRFS info (device loop0): setting compat-ro feature flag for FREE_SPACE_TREE (0x1) [ 79.231571][ T5368] BTRFS info (device loop0): setting compat-ro feature flag for FREE_SPACE_TREE_VALID (0x2) [ 79.235649][ T5368] FAULT_INJECTION: forcing a failure. [ 79.235649][ T5368] name failslab, interval 1, probability 0, space 0, times 0 [ 79.237868][ T5368] CPU: 1 PID: 5368 Comm: syz.0.33 Tainted: G W syzkaller #0 [ 79.239268][ T5368] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/18/2026 [ 79.240998][ T5368] Call trace: [ 79.241502][ T5368] dump_backtrace+0x0/0x458 [ 79.242272][ T5368] show_stack+0x2c/0x3c [ 79.242946][ T5368] __dump_stack+0x30/0x40 [ 79.243673][ T5368] dump_stack_lvl+0xf4/0x15c [ 79.244457][ T5368] dump_stack+0x1c/0x5c [ 79.245180][ T5368] should_fail+0x3bc/0x514 [ 79.245950][ T5368] __should_failslab+0xbc/0x10c [ 79.246766][ T5368] should_failslab+0x10/0x28 [ 79.247493][ T5368] slab_pre_alloc_hook+0x64/0xe8 [ 79.248383][ T5368] kmem_cache_alloc+0x94/0x3d4 [ 79.249270][ T5368] btrfs_alloc_path+0x5c/0x68 [ 79.250149][ T5368] btrfs_insert_dir_item+0x184/0x3e8 [ 79.251100][ T5368] btrfs_add_link+0x2b0/0xa9c [ 79.251841][ T5368] btrfs_create+0x468/0x514 [ 79.252576][ T5368] path_openat+0xe18/0x2718 [ 79.253332][ T5368] do_filp_open+0x184/0x368 [ 79.254106][ T5368] do_sys_openat2+0x134/0x3f4 [ 79.254976][ T5368] __arm64_sys_openat+0x118/0x14c [ 79.255822][ T5368] invoke_syscall+0x98/0x2b0 [ 79.256547][ T5368] el0_svc_common+0x138/0x258 [ 79.257315][ T5368] do_el0_svc+0x58/0x13c [ 79.258037][ T5368] el0_svc+0x78/0x1d0 [ 79.258705][ T5368] el0t_64_sync_handler+0xcc/0xe4 [ 79.259609][ T5368] el0t_64_sync+0x1a0/0x1a4 [ 79.262131][ T5368] ------------[ cut here ]------------ [ 79.263067][ T5368] WARNING: CPU: 1 PID: 5368 at fs/btrfs/inode.c:6776 btrfs_add_link+0x718/0xa9c [ 79.264578][ T5368] Modules linked in: [ 79.265212][ T5368] CPU: 1 PID: 5368 Comm: syz.0.33 Tainted: G W syzkaller #0 [ 79.266762][ T5368] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/18/2026 [ 79.268495][ T5368] pstate: 62400005 (nZCv daif +PAN -UAO +TCO -DIT -SSBS BTYPE=--) [ 79.269862][ T5368] pc : btrfs_add_link+0x718/0xa9c [ 79.270742][ T5368] lr : btrfs_add_link+0x718/0xa9c [ 79.271584][ T5368] sp : ffff800021697580 [ 79.272259][ T5368] x29: ffff800021697680 x28: ffff0000deacebb0 x27: 0000000000000108 [ 79.273662][ T5368] x26: 00000000fffffff4 x25: 0000000000000000 x24: dfff800000000000 [ 79.275102][ T5368] x23: 0000000000000014 x22: 1fffe0001bd59d81 x21: ffff7000042d2eb8 [ 79.276379][ T5368] x20: 00000000fffffff4 x19: ffff0000deacec08 x18: 0000000000000001 [ 79.277821][ T5368] x17: 0000000000000000 x16: ffff80001125f448 x15: 00000000ffffffff [ 79.279165][ T5368] x14: 0000000000000001 x13: 1fffe000341f47ab x12: 0000000000ff0100 [ 79.280562][ T5368] x11: 0000000000000000 x10: 0000000000000000 x9 : 58c7f4280febe000 [ 79.281955][ T5368] x8 : 58c7f4280febe000 x7 : 0000000000000001 x6 : 0000000000000001 [ 79.283349][ T5368] x5 : ffff800021696e98 x4 : ffff80001437f3e0 x3 : ffff800008509220 [ 79.284780][ T5368] x2 : 0000000000000001 x1 : 0000000100000000 x0 : 0000000000000026 [ 79.286181][ T5368] Call trace: [ 79.286742][ T5368] btrfs_add_link+0x718/0xa9c [ 79.287536][ T5368] btrfs_create+0x468/0x514 [ 79.288332][ T5368] path_openat+0xe18/0x2718 [ 79.289170][ T5368] do_filp_open+0x184/0x368 [ 79.289985][ T5368] do_sys_openat2+0x134/0x3f4 [ 79.290796][ T5368] __arm64_sys_openat+0x118/0x14c [ 79.291618][ T5368] invoke_syscall+0x98/0x2b0 [ 79.292401][ T5368] el0_svc_common+0x138/0x258 [ 79.293230][ T5368] do_el0_svc+0x58/0x13c [ 79.293862][ T5368] el0_svc+0x78/0x1d0 [ 79.294473][ T5368] el0t_64_sync_handler+0xcc/0xe4 [ 79.295225][ T5368] el0t_64_sync+0x1a0/0x1a4 [ 79.295897][ T5368] irq event stamp: 80442 [ 79.296576][ T5368] hardirqs last enabled at (80441): [] __up_console_sem+0xb4/0xfc [ 79.298168][ T5368] hardirqs last disabled at (80442): [] el1_dbg+0x24/0x80 [ 79.299527][ T5368] softirqs last enabled at (80422): [] handle_softirqs+0xa40/0xbe4 [ 79.301126][ T5368] softirqs last disabled at (80405): [] __irq_exit_rcu+0x240/0x43c [ 79.302754][ T5368] ---[ end trace a09483aa755ef15e ]--- [ 79.305205][ T5368] BTRFS: error (device loop0) in btrfs_add_link:6776: errno=-12 Out of memory [ 79.306703][ T5368] BTRFS info (device loop0): forced readonly [ 79.466600][ T5390] loop0: detected capacity change from 0 to 32768 [ 79.519312][ T5390] BTRFS: device fsid ed167579-eb65-4e76-9a50-61ac97e9b59d devid 1 transid 8 /dev/loop0 scanned by syz.0.34 (5390) [ 79.522825][ T5390] BTRFS info (device loop0): using sha256 (sha256-ce) checksum algorithm [ 79.524319][ T5390] BTRFS info (device loop0): setting nodatacow, compression disabled [ 79.525612][ T5390] BTRFS info (device loop0): setting datacow [ 79.526708][ T5390] BTRFS info (device loop0): doing ref verification [ 79.527894][ T5390] BTRFS info (device loop0): force clearing of disk cache [ 79.529406][ T5390] BTRFS info (device loop0): turning off barriers [ 79.530507][ T5390] BTRFS info (device loop0): use zlib compression, level 3 [ 79.531700][ T5390] BTRFS info (device loop0): using free space tree [ 79.532799][ T5390] BTRFS info (device loop0): has skinny extents [ 79.541096][ T5390] BTRFS info (device loop0): clearing free space tree [ 79.542182][ T5390] BTRFS info (device loop0): clearing compat-ro feature flag for FREE_SPACE_TREE (0x1) [ 79.543894][ T5390] BTRFS info (device loop0): clearing compat-ro feature flag for FREE_SPACE_TREE_VALID (0x2) [ 79.547278][ T5390] BTRFS info (device loop0): creating free space tree [ 79.549295][ T5390] BTRFS info (device loop0): setting compat-ro feature flag for FREE_SPACE_TREE (0x1) [ 79.550742][ T5390] BTRFS info (device loop0): setting compat-ro feature flag for FREE_SPACE_TREE_VALID (0x2) [ 79.554710][ T5390] FAULT_INJECTION: forcing a failure. [ 79.554710][ T5390] name failslab, interval 1, probability 0, space 0, times 0 [ 79.556808][ T5390] CPU: 0 PID: 5390 Comm: syz.0.34 Tainted: G W syzkaller #0 [ 79.558275][ T5390] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/18/2026 [ 79.559924][ T5390] Call trace: [ 79.560434][ T5390] dump_backtrace+0x0/0x458 [ 79.561237][ T5390] show_stack+0x2c/0x3c [ 79.561912][ T5390] __dump_stack+0x30/0x40 [ 79.562674][ T5390] dump_stack_lvl+0xf4/0x15c [ 79.563438][ T5390] dump_stack+0x1c/0x5c [ 79.564145][ T5390] should_fail+0x3bc/0x514 [ 79.564897][ T5390] __should_failslab+0xbc/0x10c [ 79.565692][ T5390] should_failslab+0x10/0x28 [ 79.566462][ T5390] slab_pre_alloc_hook+0x64/0xe8 [ 79.567248][ T5390] kmem_cache_alloc+0x94/0x3d4 [ 79.568037][ T5390] btrfs_alloc_path+0x5c/0x68 [ 79.568839][ T5390] btrfs_insert_dir_item+0x184/0x3e8 [ 79.569749][ T5390] btrfs_add_link+0x2b0/0xa9c [ 79.570497][ T5390] btrfs_create+0x468/0x514 [ 79.571250][ T5390] path_openat+0xe18/0x2718 [ 79.571971][ T5390] do_filp_open+0x184/0x368 [ 79.572698][ T5390] do_sys_openat2+0x134/0x3f4 [ 79.573476][ T5390] __arm64_sys_openat+0x118/0x14c [ 79.574288][ T5390] invoke_syscall+0x98/0x2b0 [ 79.574958][ T5390] el0_svc_common+0x138/0x258 [ 79.575660][ T5390] do_el0_svc+0x58/0x13c [ 79.576369][ T5390] el0_svc+0x78/0x1d0 [ 79.577033][ T5390] el0t_64_sync_handler+0xcc/0xe4 [ 79.577859][ T5390] el0t_64_sync+0x1a0/0x1a4 [ 79.580256][ T5390] ------------[ cut here ]------------ [ 79.581203][ T5390] WARNING: CPU: 0 PID: 5390 at fs/btrfs/inode.c:6776 btrfs_add_link+0x718/0xa9c [ 79.582622][ T5390] Modules linked in: [ 79.583306][ T5390] CPU: 0 PID: 5390 Comm: syz.0.34 Tainted: G W syzkaller #0 [ 79.584653][ T5390] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/18/2026 [ 79.586339][ T5390] pstate: 62400005 (nZCv daif +PAN -UAO +TCO -DIT -SSBS BTYPE=--) [ 79.587635][ T5390] pc : btrfs_add_link+0x718/0xa9c [ 79.588470][ T5390] lr : btrfs_add_link+0x718/0xa9c [ 79.589286][ T5390] sp : ffff8000217b7580 [ 79.589981][ T5390] x29: ffff8000217b7680 x28: ffff0000deab82c0 x27: 0000000000000108 [ 79.591254][ T5390] x26: 00000000fffffff4 x25: 0000000000000000 x24: dfff800000000000 [ 79.592554][ T5390] x23: 0000000000000014 x22: 1fffe0001bd57063 x21: ffff7000042f6eb8 [ 79.593948][ T5390] x20: 00000000fffffff4 x19: ffff0000deab8318 x18: 0000000000000001 [ 79.595349][ T5390] x17: 0000000000000000 x16: ffff80001125f448 x15: 00000000ffffffff [ 79.596715][ T5390] x14: 0000000000000001 x13: 1fffe000341f05ab x12: 0000000000ff0100 [ 79.598102][ T5390] x11: 0000000000000000 x10: 0000000000000000 x9 : 34101fa80e74cb00 [ 79.599588][ T5390] x8 : 34101fa80e74cb00 x7 : 0000000000000001 x6 : 0000000000000001 [ 79.601047][ T5390] x5 : ffff8000217b6e98 x4 : ffff80001437f3e0 x3 : ffff800008509220 [ 79.602488][ T5390] x2 : 0000000000000001 x1 : 0000000100000000 x0 : 0000000000000026 [ 79.603918][ T5390] Call trace: [ 79.604458][ T5390] btrfs_add_link+0x718/0xa9c [ 79.605242][ T5390] btrfs_create+0x468/0x514 [ 79.605964][ T5390] path_openat+0xe18/0x2718 [ 79.606707][ T5390] do_filp_open+0x184/0x368 [ 79.607447][ T5390] do_sys_openat2+0x134/0x3f4 [ 79.608182][ T5390] __arm64_sys_openat+0x118/0x14c [ 79.608980][ T5390] invoke_syscall+0x98/0x2b0 [ 79.609768][ T5390] el0_svc_common+0x138/0x258 [ 79.610573][ T5390] do_el0_svc+0x58/0x13c [ 79.611304][ T5390] el0_svc+0x78/0x1d0 [ 79.612046][ T5390] el0t_64_sync_handler+0xcc/0xe4 [ 79.612845][ T5390] el0t_64_sync+0x1a0/0x1a4 [ 79.613632][ T5390] irq event stamp: 79974 [ 79.614340][ T5390] hardirqs last enabled at (79973): [] __up_console_sem+0xb4/0xfc [ 79.615899][ T5390] hardirqs last disabled at (79974): [] el1_dbg+0x24/0x80 [ 79.617300][ T5390] softirqs last enabled at (79950): [] handle_softirqs+0xa40/0xbe4 [ 79.618931][ T5390] softirqs last disabled at (79929): [] __irq_exit_rcu+0x240/0x43c [ 79.620517][ T5390] ---[ end trace a09483aa755ef15f ]--- [ 79.623253][ T5390] BTRFS: error (device loop0) in btrfs_add_link:6776: errno=-12 Out of memory [ 79.624671][ T5390] BTRFS info (device loop0): forced readonly [ 79.788680][ T5412] loop0: detected capacity change from 0 to 32768 [ 79.842619][ T5412] BTRFS: device fsid ed167579-eb65-4e76-9a50-61ac97e9b59d devid 1 transid 8 /dev/loop0 scanned by syz.0.35 (5412) [ 79.846987][ T5412] BTRFS info (device loop0): using sha256 (sha256-ce) checksum algorithm [ 79.849013][ T5412] BTRFS info (device loop0): setting nodatacow, compression disabled [ 79.850226][ T5412] BTRFS info (device loop0): setting datacow [ 79.851249][ T5412] BTRFS info (device loop0): doing ref verification [ 79.852259][ T5412] BTRFS info (device loop0): force clearing of disk cache [ 79.853433][ T5412] BTRFS info (device loop0): turning off barriers [ 79.854529][ T5412] BTRFS info (device loop0): use zlib compression, level 3 [ 79.855918][ T5412] BTRFS info (device loop0): using free space tree [ 79.856895][ T5412] BTRFS info (device loop0): has skinny extents [ 79.866614][ T5412] BTRFS info (device loop0): clearing free space tree [ 79.867794][ T5412] BTRFS info (device loop0): clearing compat-ro feature flag for FREE_SPACE_TREE (0x1) [ 79.869869][ T5412] BTRFS info (device loop0): clearing compat-ro feature flag for FREE_SPACE_TREE_VALID (0x2) [ 79.873211][ T5412] BTRFS info (device loop0): creating free space tree [ 79.874613][ T5412] BTRFS info (device loop0): setting compat-ro feature flag for FREE_SPACE_TREE (0x1) [ 79.876264][ T5412] BTRFS info (device loop0): setting compat-ro feature flag for FREE_SPACE_TREE_VALID (0x2) [ 79.881702][ T5412] FAULT_INJECTION: forcing a failure. [ 79.881702][ T5412] name fail_page_alloc, interval 1, probability 0, space 0, times 1 [ 79.883858][ T5412] CPU: 0 PID: 5412 Comm: syz.0.35 Tainted: G W syzkaller #0 [ 79.885173][ T5412] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/18/2026 [ 79.886824][ T5412] Call trace: [ 79.887368][ T5412] dump_backtrace+0x0/0x458 [ 79.888132][ T5412] show_stack+0x2c/0x3c [ 79.888791][ T5412] __dump_stack+0x30/0x40 [ 79.889565][ T5412] dump_stack_lvl+0xf4/0x15c [ 79.890374][ T5412] dump_stack+0x1c/0x5c [ 79.891073][ T5412] should_fail+0x3bc/0x514 [ 79.891787][ T5412] should_fail_alloc_page+0x74/0xa8 [ 79.892703][ T5412] prepare_alloc_pages+0x160/0x45c [ 79.893570][ T5412] __alloc_pages+0x108/0x470 [ 79.894331][ T5412] alloc_pages+0x34c/0x5c0 [ 79.895054][ T5412] new_slab+0xe0/0x544 [ 79.895799][ T5412] ___slab_alloc+0x6b4/0xd8c [ 79.896632][ T5412] __slab_alloc+0x68/0xc0 [ 79.897369][ T5412] kmem_cache_alloc+0x2a4/0x3d4 [ 79.898189][ T5412] btrfs_get_or_create_delayed_node+0x114/0x4a8 [ 79.899312][ T5412] btrfs_delayed_update_inode+0x3c/0x1b68 [ 79.900243][ T5412] btrfs_update_inode+0x210/0x3d4 [ 79.901096][ T5412] btrfs_create+0x364/0x514 [ 79.901840][ T5412] path_openat+0xe18/0x2718 [ 79.902561][ T5412] do_filp_open+0x184/0x368 [ 79.903289][ T5412] do_sys_openat2+0x134/0x3f4 [ 79.904059][ T5412] __arm64_sys_openat+0x118/0x14c [ 79.904948][ T5412] invoke_syscall+0x98/0x2b0 [ 79.905684][ T5412] el0_svc_common+0x138/0x258 [ 79.906384][ T5412] do_el0_svc+0x58/0x13c [ 79.907071][ T5412] el0_svc+0x78/0x1d0 [ 79.907659][ T5412] el0t_64_sync_handler+0xcc/0xe4 [ 79.908432][ T5412] el0t_64_sync+0x1a0/0x1a4 [ 80.049539][ T5434] loop0: detected capacity change from 0 to 32768 [ 80.056742][ T5434] BTRFS: device fsid ed167579-eb65-4e76-9a50-61ac97e9b59d devid 1 transid 8 /dev/loop0 scanned by syz.0.36 (5434) [ 80.061455][ T5434] BTRFS info (device loop0): using sha256 (sha256-ce) checksum algorithm [ 80.062929][ T5434] BTRFS info (device loop0): setting nodatacow, compression disabled [ 80.064218][ T5434] BTRFS info (device loop0): setting datacow [ 80.065207][ T5434] BTRFS info (device loop0): doing ref verification [ 80.066435][ T5434] BTRFS info (device loop0): force clearing of disk cache [ 80.067682][ T5434] BTRFS info (device loop0): turning off barriers [ 80.069348][ T5434] BTRFS info (device loop0): use zlib compression, level 3 [ 80.070588][ T5434] BTRFS info (device loop0): using free space tree [ 80.071758][ T5434] BTRFS info (device loop0): has skinny extents [ 80.087347][ T5434] BTRFS info (device loop0): clearing free space tree [ 80.088648][ T5434] BTRFS info (device loop0): clearing compat-ro feature flag for FREE_SPACE_TREE (0x1) [ 80.090257][ T5434] BTRFS info (device loop0): clearing compat-ro feature flag for FREE_SPACE_TREE_VALID (0x2) [ 80.093577][ T5434] BTRFS info (device loop0): creating free space tree [ 80.094979][ T5434] BTRFS info (device loop0): setting compat-ro feature flag for FREE_SPACE_TREE (0x1) [ 80.096562][ T5434] BTRFS info (device loop0): setting compat-ro feature flag for FREE_SPACE_TREE_VALID (0x2) [ 80.109577][ T5434] FAULT_INJECTION: forcing a failure. [ 80.109577][ T5434] name failslab, interval 1, probability 0, space 0, times 0 [ 80.111806][ T5434] CPU: 1 PID: 5434 Comm: syz.0.36 Tainted: G W syzkaller #0 [ 80.113266][ T5434] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/18/2026 [ 80.114987][ T5434] Call trace: [ 80.115536][ T5434] dump_backtrace+0x0/0x458 [ 80.116282][ T5434] show_stack+0x2c/0x3c [ 80.117000][ T5434] __dump_stack+0x30/0x40 [ 80.117786][ T5434] dump_stack_lvl+0xf4/0x15c [ 80.118608][ T5434] dump_stack+0x1c/0x5c [ 80.119269][ T5434] should_fail+0x3bc/0x514 [ 80.120026][ T5434] __should_failslab+0xbc/0x10c [ 80.120845][ T5434] should_failslab+0x10/0x28 [ 80.121616][ T5434] slab_pre_alloc_hook+0x64/0xe8 [ 80.122473][ T5434] kmem_cache_alloc+0x94/0x3d4 [ 80.123266][ T5434] security_inode_alloc+0x38/0x11c [ 80.124136][ T5434] inode_init_always+0x670/0xa84 [ 80.125004][ T5434] new_inode_pseudo+0x7c/0x1fc [ 80.125813][ T5434] new_inode+0x38/0x174 [ 80.126498][ T5434] btrfs_new_inode+0x158/0x1564 [ 80.127284][ T5434] btrfs_create+0x24c/0x514 [ 80.127992][ T5434] path_openat+0xe18/0x2718 [ 80.128771][ T5434] do_filp_open+0x184/0x368 [ 80.129531][ T5434] do_sys_openat2+0x134/0x3f4 [ 80.130254][ T5434] __arm64_sys_openat+0x118/0x14c [ 80.131096][ T5434] invoke_syscall+0x98/0x2b0 [ 80.131860][ T5434] el0_svc_common+0x138/0x258 [ 80.132692][ T5434] do_el0_svc+0x58/0x13c [ 80.133460][ T5434] el0_svc+0x78/0x1d0 [ 80.134093][ T5434] el0t_64_sync_handler+0xcc/0xe4 [ 80.134962][ T5434] el0t_64_sync+0x1a0/0x1a4 [ 80.269754][ T5456] loop0: detected capacity change from 0 to 32768 [ 80.319112][ T5456] BTRFS: device fsid ed167579-eb65-4e76-9a50-61ac97e9b59d devid 1 transid 8 /dev/loop0 scanned by syz.0.37 (5456) [ 80.359842][ T5456] BTRFS info (device loop0): using sha256 (sha256-ce) checksum algorithm [ 80.361218][ T5456] BTRFS info (device loop0): setting nodatacow, compression disabled [ 80.362633][ T5456] BTRFS info (device loop0): setting datacow [ 80.363626][ T5456] BTRFS info (device loop0): doing ref verification [ 80.364771][ T5456] BTRFS info (device loop0): force clearing of disk cache [ 80.365964][ T5456] BTRFS info (device loop0): turning off barriers [ 80.367182][ T5456] BTRFS info (device loop0): use zlib compression, level 3 [ 80.370177][ T5456] BTRFS info (device loop0): using free space tree [ 80.371224][ T5456] BTRFS info (device loop0): has skinny extents [ 80.391762][ T5456] BTRFS info (device loop0): clearing free space tree [ 80.393215][ T5456] BTRFS info (device loop0): clearing compat-ro feature flag for FREE_SPACE_TREE (0x1) [ 80.394717][ T5456] BTRFS info (device loop0): clearing compat-ro feature flag for FREE_SPACE_TREE_VALID (0x2) [ 80.398857][ T5456] BTRFS info (device loop0): creating free space tree [ 80.400301][ T5456] BTRFS info (device loop0): setting compat-ro feature flag for FREE_SPACE_TREE (0x1) [ 80.401860][ T5456] BTRFS info (device loop0): setting compat-ro feature flag for FREE_SPACE_TREE_VALID (0x2) [ 80.405960][ T5456] FAULT_INJECTION: forcing a failure. [ 80.405960][ T5456] name failslab, interval 1, probability 0, space 0, times 0 [ 80.409461][ T5456] CPU: 1 PID: 5456 Comm: syz.0.37 Tainted: G W syzkaller #0 [ 80.410801][ T5456] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/18/2026 [ 80.412482][ T5456] Call trace: [ 80.412988][ T5456] dump_backtrace+0x0/0x458 [ 80.413707][ T5456] show_stack+0x2c/0x3c [ 80.414379][ T5456] __dump_stack+0x30/0x40 [ 80.415044][ T5456] dump_stack_lvl+0xf4/0x15c [ 80.415833][ T5456] dump_stack+0x1c/0x5c [ 80.416529][ T5456] should_fail+0x3bc/0x514 [ 80.417353][ T5456] __should_failslab+0xbc/0x10c [ 80.418169][ T5456] should_failslab+0x10/0x28 [ 80.418923][ T5456] slab_pre_alloc_hook+0x64/0xe8 [ 80.419717][ T5456] kmem_cache_alloc+0x94/0x3d4 [ 80.420470][ T5456] btrfs_alloc_path+0x5c/0x68 [ 80.421242][ T5456] btrfs_insert_dir_item+0x184/0x3e8 [ 80.422233][ T5456] btrfs_add_link+0x2b0/0xa9c [ 80.423025][ T5456] btrfs_create+0x468/0x514 [ 80.423766][ T5456] path_openat+0xe18/0x2718 [ 80.424562][ T5456] do_filp_open+0x184/0x368 [ 80.425385][ T5456] do_sys_openat2+0x134/0x3f4 [ 80.426171][ T5456] __arm64_sys_openat+0x118/0x14c [ 80.427031][ T5456] invoke_syscall+0x98/0x2b0 [ 80.427811][ T5456] el0_svc_common+0x138/0x258 [ 80.428636][ T5456] do_el0_svc+0x58/0x13c [ 80.429344][ T5456] el0_svc+0x78/0x1d0 [ 80.430035][ T5456] el0t_64_sync_handler+0xcc/0xe4 [ 80.430905][ T5456] el0t_64_sync+0x1a0/0x1a4 [ 80.433190][ T5456] ------------[ cut here ]------------ [ 80.434110][ T5456] WARNING: CPU: 1 PID: 5456 at fs/btrfs/inode.c:6776 btrfs_add_link+0x718/0xa9c [ 80.435530][ T5456] Modules linked in: [ 80.436130][ T5456] CPU: 1 PID: 5456 Comm: syz.0.37 Tainted: G W syzkaller #0 [ 80.437352][ T5456] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/18/2026 [ 80.438788][ T5456] pstate: 62400005 (nZCv daif +PAN -UAO +TCO -DIT -SSBS BTYPE=--) [ 80.440004][ T5456] pc : btrfs_add_link+0x718/0xa9c [ 80.440727][ T5456] lr : btrfs_add_link+0x718/0xa9c [ 80.441552][ T5456] sp : ffff800021af7580 [ 80.442136][ T5456] x29: ffff800021af7680 x28: ffff0000deabf580 x27: 0000000000000108 [ 80.443355][ T5456] x26: 00000000fffffff4 x25: 0000000000000000 x24: dfff800000000000 [ 80.444626][ T5456] x23: 0000000000000014 x22: 1fffe0001bd57ebb x21: ffff70000435eeb8 [ 80.445962][ T5456] x20: 00000000fffffff4 x19: ffff0000deabf5d8 x18: 0000000000000001 [ 80.447350][ T5456] x17: 0000000000000000 x16: ffff80001125f448 x15: 00000000ffffffff [ 80.448761][ T5456] x14: 0000000000000001 x13: 1fffe000341f47ab x12: 0000000000ff0100 [ 80.450219][ T5456] x11: 0000000000000000 x10: 0000000000000000 x9 : 0d4e0ee3088d6e00 [ 80.451663][ T5456] x8 : 0d4e0ee3088d6e00 x7 : 0000000000000001 x6 : 0000000000000001 [ 80.453054][ T5456] x5 : ffff800021af6e98 x4 : ffff80001437f3e0 x3 : ffff800008509220 [ 80.454451][ T5456] x2 : 0000000000000001 x1 : 0000000100000000 x0 : 0000000000000026 [ 80.455830][ T5456] Call trace: [ 80.456371][ T5456] btrfs_add_link+0x718/0xa9c [ 80.457190][ T5456] btrfs_create+0x468/0x514 [ 80.458024][ T5456] path_openat+0xe18/0x2718 [ 80.458804][ T5456] do_filp_open+0x184/0x368 [ 80.459600][ T5456] do_sys_openat2+0x134/0x3f4 [ 80.460397][ T5456] __arm64_sys_openat+0x118/0x14c [ 80.461204][ T5456] invoke_syscall+0x98/0x2b0 [ 80.461997][ T5456] el0_svc_common+0x138/0x258 [ 80.462798][ T5456] do_el0_svc+0x58/0x13c [ 80.463628][ T5456] el0_svc+0x78/0x1d0 [ 80.464304][ T5456] el0t_64_sync_handler+0xcc/0xe4 [ 80.465150][ T5456] el0t_64_sync+0x1a0/0x1a4 [ 80.465933][ T5456] irq event stamp: 80470 [ 80.466659][ T5456] hardirqs last enabled at (80469): [] __up_console_sem+0xb4/0xfc [ 80.468338][ T5456] hardirqs last disabled at (80470): [] el1_dbg+0x24/0x80 [ 80.469842][ T5456] softirqs last enabled at (80450): [] handle_softirqs+0xa40/0xbe4 [ 80.471451][ T5456] softirqs last disabled at (80403): [] __irq_exit_rcu+0x240/0x43c [ 80.473135][ T5456] ---[ end trace a09483aa755ef160 ]--- [ 80.475573][ T5456] BTRFS: error (device loop0) in btrfs_add_link:6776: errno=-12 Out of memory [ 80.476997][ T5456] BTRFS info (device loop0): forced readonly [ 80.666801][ T5478] loop0: detected capacity change from 0 to 32768 [ 80.710577][ T5478] BTRFS: device fsid ed167579-eb65-4e76-9a50-61ac97e9b59d devid 1 transid 8 /dev/loop0 scanned by syz.0.38 (5478) [ 80.713759][ T5478] BTRFS info (device loop0): using sha256 (sha256-ce) checksum algorithm [ 80.715305][ T5478] BTRFS info (device loop0): setting nodatacow, compression disabled [ 80.716732][ T5478] BTRFS info (device loop0): setting datacow [ 80.717728][ T5478] BTRFS info (device loop0): doing ref verification [ 80.720451][ T5478] BTRFS info (device loop0): force clearing of disk cache [ 80.721647][ T5478] BTRFS info (device loop0): turning off barriers [ 80.733946][ T5478] FAULT_INJECTION: forcing a failure. [ 80.733946][ T5478] name failslab, interval 1, probability 0, space 0, times 0 [ 80.736090][ T5478] CPU: 1 PID: 5478 Comm: syz.0.38 Tainted: G W syzkaller #0 [ 80.737505][ T5478] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/18/2026 [ 80.739235][ T5478] Call trace: [ 80.739797][ T5478] dump_backtrace+0x0/0x458 [ 80.740756][ T5478] show_stack+0x2c/0x3c [ 80.741523][ T5478] __dump_stack+0x30/0x40 [ 80.742266][ T5478] dump_stack_lvl+0xf4/0x15c [ 80.743099][ T5478] dump_stack+0x1c/0x5c [ 80.743848][ T5478] should_fail+0x3bc/0x514 [ 80.744601][ T5478] __should_failslab+0xbc/0x10c [ 80.745405][ T5478] should_failslab+0x10/0x28 [ 80.746211][ T5478] slab_pre_alloc_hook+0x64/0xe8 [ 80.747076][ T5478] kmem_cache_alloc+0x94/0x3d4 [ 80.747852][ T5478] btrfs_get_or_create_delayed_node+0x114/0x4a8 [ 80.748913][ T5478] btrfs_delayed_update_inode+0x3c/0x1b68 [ 80.749881][ T5478] btrfs_update_inode+0x210/0x3d4 [ 80.750719][ T5478] btrfs_create+0x364/0x514 [ 80.751474][ T5478] path_openat+0xe18/0x2718 [ 80.752218][ T5478] do_filp_open+0x184/0x368 [ 80.752969][ T5478] do_sys_openat2+0x134/0x3f4 [ 80.753753][ T5478] __arm64_sys_openat+0x118/0x14c [ 80.754518][ T5478] invoke_syscall+0x98/0x2b0 [ 80.755283][ T5478] el0_svc_common+0x138/0x258 [ 80.756009][ T5478] do_el0_svc+0x58/0x13c [ 80.756671][ T5478] el0_svc+0x78/0x1d0 [ 80.757303][ T5478] el0t_64_sync_handler+0xcc/0xe4 [ 80.758185][ T5478] el0t_64_sync+0x1a0/0x1a4 [ 80.798062][ T4139] Bluetooth: hci1: command 0x0419 tx timeout [ 80.893462][ T5500] loop0: detected capacity change from 0 to 32768 [ 80.939150][ T5500] BTRFS: device fsid ed167579-eb65-4e76-9a50-61ac97e9b59d devid 1 transid 8 /dev/loop0 scanned by syz.0.39 (5500) [ 80.961820][ T5500] FAULT_INJECTION: forcing a failure. [ 80.961820][ T5500] name failslab, interval 1, probability 0, space 0, times 0 [ 80.963968][ T5500] CPU: 1 PID: 5500 Comm: syz.0.39 Tainted: G W syzkaller #0 [ 80.965398][ T5500] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/18/2026 [ 80.967044][ T5500] Call trace: [ 80.967575][ T5500] dump_backtrace+0x0/0x458 [ 80.968315][ T5500] show_stack+0x2c/0x3c [ 80.968992][ T5500] __dump_stack+0x30/0x40 [ 80.969679][ T5500] dump_stack_lvl+0xf4/0x15c [ 80.970438][ T5500] dump_stack+0x1c/0x5c [ 80.971097][ T5500] should_fail+0x3bc/0x514 [ 80.971788][ T5500] __should_failslab+0xbc/0x10c [ 80.972616][ T5500] should_failslab+0x10/0x28 [ 80.973430][ T5500] slab_pre_alloc_hook+0x64/0xe8 [ 80.974267][ T5500] kmem_cache_alloc+0x94/0x3d4 [ 80.975015][ T5500] btrfs_get_or_create_delayed_node+0x114/0x4a8 [ 80.976011][ T5500] btrfs_delayed_update_inode+0x3c/0x1b68 [ 80.976960][ T5500] btrfs_update_inode+0x210/0x3d4 [ 80.977794][ T5500] btrfs_create+0x364/0x514 [ 80.978593][ T5500] path_openat+0xe18/0x2718 [ 80.979329][ T5500] do_filp_open+0x184/0x368 [ 80.980059][ T5500] do_sys_openat2+0x134/0x3f4 [ 80.980819][ T5500] __arm64_sys_openat+0x118/0x14c [ 80.981611][ T5500] invoke_syscall+0x98/0x2b0 [ 80.982337][ T5500] el0_svc_common+0x138/0x258 [ 80.983121][ T5500] do_el0_svc+0x58/0x13c [ 80.983782][ T5500] el0_svc+0x78/0x1d0 [ 80.984426][ T5500] el0t_64_sync_handler+0xcc/0xe4 [ 80.985216][ T5500] el0t_64_sync+0x1a0/0x1a4 [ 81.156938][ T5521] loop0: detected capacity change from 0 to 32768 [ 81.202308][ T5521] BTRFS: device fsid ed167579-eb65-4e76-9a50-61ac97e9b59d devid 1 transid 8 /dev/loop0 scanned by syz.0.40 (5521) [ 81.230076][ T5521] FAULT_INJECTION: forcing a failure. [ 81.230076][ T5521] name failslab, interval 1, probability 0, space 0, times 0 [ 81.232210][ T5521] CPU: 1 PID: 5521 Comm: syz.0.40 Tainted: G W syzkaller #0 [ 81.233710][ T5521] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/18/2026 [ 81.235278][ T5521] Call trace: [ 81.235811][ T5521] dump_backtrace+0x0/0x458 [ 81.236494][ T5521] show_stack+0x2c/0x3c [ 81.237162][ T5521] __dump_stack+0x30/0x40 [ 81.237850][ T5521] dump_stack_lvl+0xf4/0x15c [ 81.238617][ T5521] dump_stack+0x1c/0x5c [ 81.239354][ T5521] should_fail+0x3bc/0x514 [ 81.240090][ T5521] __should_failslab+0xbc/0x10c [ 81.240943][ T5521] should_failslab+0x10/0x28 [ 81.241684][ T5521] slab_pre_alloc_hook+0x64/0xe8 [ 81.242496][ T5521] kmem_cache_alloc+0x94/0x3d4 [ 81.243234][ T5521] btrfs_alloc_path+0x5c/0x68 [ 81.244002][ T5521] btrfs_insert_dir_item+0x184/0x3e8 [ 81.244847][ T5521] btrfs_add_link+0x2b0/0xa9c [ 81.245598][ T5521] btrfs_create+0x468/0x514 [ 81.246323][ T5521] path_openat+0xe18/0x2718 [ 81.247064][ T5521] do_filp_open+0x184/0x368 [ 81.247855][ T5521] do_sys_openat2+0x134/0x3f4 [ 81.248687][ T5521] __arm64_sys_openat+0x118/0x14c [ 81.249508][ T5521] invoke_syscall+0x98/0x2b0 [ 81.250279][ T5521] el0_svc_common+0x138/0x258 [ 81.251060][ T5521] do_el0_svc+0x58/0x13c [ 81.251738][ T5521] el0_svc+0x78/0x1d0 [ 81.252401][ T5521] el0t_64_sync_handler+0xcc/0xe4 [ 81.253238][ T5521] el0t_64_sync+0x1a0/0x1a4 [ 81.255986][ T5521] ------------[ cut here ]------------ [ 81.257000][ T5521] WARNING: CPU: 0 PID: 5521 at fs/btrfs/inode.c:6776 btrfs_add_link+0x718/0xa9c [ 81.258470][ T5521] Modules linked in: [ 81.259091][ T5521] CPU: 0 PID: 5521 Comm: syz.0.40 Tainted: G W syzkaller #0 [ 81.260497][ T5521] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/18/2026 [ 81.262214][ T5521] pstate: 62400005 (nZCv daif +PAN -UAO +TCO -DIT -SSBS BTYPE=--) [ 81.263526][ T5521] pc : btrfs_add_link+0x718/0xa9c [ 81.264389][ T5521] lr : btrfs_add_link+0x718/0xa9c [ 81.265298][ T5521] sp : ffff800021d67580 [ 81.266000][ T5521] x29: ffff800021d67680 x28: ffff0000de9d18f0 x27: 0000000000000108 [ 81.267305][ T5521] x26: 00000000fffffff4 x25: 0000000000000000 x24: dfff800000000000 [ 81.268650][ T5521] x23: 0000000000000014 x22: 1fffe0001bd3a329 x21: ffff7000043aceb8 [ 81.269996][ T5521] x20: 00000000fffffff4 x19: ffff0000de9d1948 x18: 0000000000000001 [ 81.271318][ T5521] x17: 0000000000000000 x16: ffff80001125f448 x15: 00000000ffffffff [ 81.272689][ T5521] x14: 0000000000000001 x13: 1fffe000341f05ab x12: 0000000000ff0100 [ 81.274021][ T5521] x11: 0000000000000000 x10: 0000000000000000 x9 : 392453011bad9d00 [ 81.275341][ T5521] x8 : 392453011bad9d00 x7 : 0000000000000001 x6 : 0000000000000001 [ 81.276631][ T5521] x5 : ffff800021d66e98 x4 : ffff80001437f3e0 x3 : ffff800008509220 [ 81.278035][ T5521] x2 : 0000000000000001 x1 : 0000000100000000 x0 : 0000000000000026 [ 81.279393][ T5521] Call trace: [ 81.279952][ T5521] btrfs_add_link+0x718/0xa9c [ 81.280715][ T5521] btrfs_create+0x468/0x514 [ 81.281509][ T5521] path_openat+0xe18/0x2718 [ 81.282210][ T5521] do_filp_open+0x184/0x368 [ 81.282975][ T5521] do_sys_openat2+0x134/0x3f4 [ 81.283749][ T5521] __arm64_sys_openat+0x118/0x14c [ 81.284586][ T5521] invoke_syscall+0x98/0x2b0 [ 81.285286][ T5521] el0_svc_common+0x138/0x258 [ 81.286023][ T5521] do_el0_svc+0x58/0x13c [ 81.286770][ T5521] el0_svc+0x78/0x1d0 [ 81.287443][ T5521] el0t_64_sync_handler+0xcc/0xe4 [ 81.288282][ T5521] el0t_64_sync+0x1a0/0x1a4 [ 81.289081][ T5521] irq event stamp: 79866 [ 81.289780][ T5521] hardirqs last enabled at (79865): [] __up_console_sem+0xb4/0xfc [ 81.291450][ T5521] hardirqs last disabled at (79866): [] el1_dbg+0x24/0x80 [ 81.292948][ T5521] softirqs last enabled at (79840): [] handle_softirqs+0xa40/0xbe4 [ 81.294452][ T5521] softirqs last disabled at (79799): [] __irq_exit_rcu+0x240/0x43c [ 81.295992][ T5521] ---[ end trace a09483aa755ef161 ]--- [ 81.297166][ T5521] BTRFS: error (device loop0) in btrfs_add_link:6776: errno=-12 Out of memory [ 81.478695][ T5543] loop0: detected capacity change from 0 to 32768 [ 81.522187][ T5543] BTRFS: device fsid ed167579-eb65-4e76-9a50-61ac97e9b59d devid 1 transid 8 /dev/loop0 scanned by syz.0.41 (5543) [ 81.539873][ T5543] FAULT_INJECTION: forcing a failure. [ 81.539873][ T5543] name failslab, interval 1, probability 0, space 0, times 0 [ 81.541962][ T5543] CPU: 1 PID: 5543 Comm: syz.0.41 Tainted: G W syzkaller #0 [ 81.543432][ T5543] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/18/2026 [ 81.545076][ T5543] Call trace: [ 81.545588][ T5543] dump_backtrace+0x0/0x458 [ 81.546295][ T5543] show_stack+0x2c/0x3c [ 81.546888][ T5543] __dump_stack+0x30/0x40 [ 81.547615][ T5543] dump_stack_lvl+0xf4/0x15c [ 81.548434][ T5543] dump_stack+0x1c/0x5c [ 81.549095][ T5543] should_fail+0x3bc/0x514 [ 81.549793][ T5543] __should_failslab+0xbc/0x10c [ 81.550631][ T5543] should_failslab+0x10/0x28 [ 81.551382][ T5543] slab_pre_alloc_hook+0x64/0xe8 [ 81.552161][ T5543] kmem_cache_alloc+0x94/0x3d4 [ 81.552969][ T5543] btrfs_alloc_path+0x5c/0x68 [ 81.553768][ T5543] btrfs_insert_dir_item+0x184/0x3e8 [ 81.554629][ T5543] btrfs_add_link+0x2b0/0xa9c [ 81.555405][ T5543] btrfs_create+0x468/0x514 [ 81.556128][ T5543] path_openat+0xe18/0x2718 [ 81.556910][ T5543] do_filp_open+0x184/0x368 [ 81.557653][ T5543] do_sys_openat2+0x134/0x3f4 [ 81.558410][ T5543] __arm64_sys_openat+0x118/0x14c [ 81.559195][ T5543] invoke_syscall+0x98/0x2b0 [ 81.559989][ T5543] el0_svc_common+0x138/0x258 [ 81.560820][ T5543] do_el0_svc+0x58/0x13c [ 81.561553][ T5543] el0_svc+0x78/0x1d0 [ 81.562236][ T5543] el0t_64_sync_handler+0xcc/0xe4 [ 81.563061][ T5543] el0t_64_sync+0x1a0/0x1a4 [ 81.565075][ T5543] ------------[ cut here ]------------ [ 81.566045][ T5543] WARNING: CPU: 1 PID: 5543 at fs/btrfs/inode.c:6776 btrfs_add_link+0x718/0xa9c [ 81.567523][ T5543] Modules linked in: [ 81.568158][ T5543] CPU: 1 PID: 5543 Comm: syz.0.41 Tainted: G W syzkaller #0 [ 81.569679][ T5543] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/18/2026 [ 81.571438][ T5543] pstate: 62400005 (nZCv daif +PAN -UAO +TCO -DIT -SSBS BTYPE=--) [ 81.572734][ T5543] pc : btrfs_add_link+0x718/0xa9c [ 81.573581][ T5543] lr : btrfs_add_link+0x718/0xa9c [ 81.574408][ T5543] sp : ffff800021d67580 [ 81.575076][ T5543] x29: ffff800021d67680 x28: ffff0000de9d1630 x27: 0000000000000108 [ 81.576456][ T5543] x26: 00000000fffffff4 x25: 0000000000000000 x24: dfff800000000000 [ 81.577802][ T5543] x23: 0000000000000014 x22: 1fffe0001bd3a2d1 x21: ffff7000043aceb8 [ 81.579144][ T5543] x20: 00000000fffffff4 x19: ffff0000de9d1688 x18: 0000000000000001 [ 81.580573][ T5543] x17: 0000000000000000 x16: ffff80001125f448 x15: 00000000ffffffff [ 81.581938][ T5543] x14: 0000000000000001 x13: 1fffe000341f47ab x12: 0000000000ff0100 [ 81.583263][ T5543] x11: 0000000000000000 x10: 0000000000000000 x9 : f9d00cdb5dd9fe00 [ 81.584629][ T5543] x8 : f9d00cdb5dd9fe00 x7 : 0000000000000001 x6 : 0000000000000001 [ 81.585916][ T5543] x5 : ffff800021d66e98 x4 : ffff80001437f3e0 x3 : ffff800008509220 [ 81.587258][ T5543] x2 : 0000000000000001 x1 : 0000000100000000 x0 : 0000000000000026 [ 81.588673][ T5543] Call trace: [ 81.589193][ T5543] btrfs_add_link+0x718/0xa9c [ 81.589992][ T5543] btrfs_create+0x468/0x514 [ 81.590706][ T5543] path_openat+0xe18/0x2718 [ 81.591417][ T5543] do_filp_open+0x184/0x368 [ 81.592215][ T5543] do_sys_openat2+0x134/0x3f4 [ 81.592965][ T5543] __arm64_sys_openat+0x118/0x14c [ 81.593865][ T5543] invoke_syscall+0x98/0x2b0 [ 81.594635][ T5543] el0_svc_common+0x138/0x258 [ 81.595338][ T5543] do_el0_svc+0x58/0x13c [ 81.595940][ T5543] el0_svc+0x78/0x1d0 [ 81.596573][ T5543] el0t_64_sync_handler+0xcc/0xe4 [ 81.597327][ T5543] el0t_64_sync+0x1a0/0x1a4 [ 81.598049][ T5543] irq event stamp: 79992 [ 81.598746][ T5543] hardirqs last enabled at (79991): [] __up_console_sem+0xb4/0xfc [ 81.600406][ T5543] hardirqs last disabled at (79992): [] el1_dbg+0x24/0x80 [ 81.601968][ T5543] softirqs last enabled at (79972): [] handle_softirqs+0xa40/0xbe4 [ 81.603458][ T5543] softirqs last disabled at (79959): [] __irq_exit_rcu+0x240/0x43c [ 81.604919][ T5543] ---[ end trace a09483aa755ef162 ]--- [ 81.606572][ T5543] BTRFS: error (device loop0) in btrfs_add_link:6776: errno=-12 Out of memory [ 81.812035][ T5565] BTRFS: device fsid ed167579-eb65-4e76-9a50-61ac97e9b59d devid 1 transid 8 /dev/loop0 scanned by syz.0.42 (5565) [ 81.900960][ T5565] FAULT_INJECTION: forcing a failure. [ 81.900960][ T5565] name failslab, interval 1, probability 0, space 0, times 0 [ 81.903149][ T5565] CPU: 1 PID: 5565 Comm: syz.0.42 Tainted: G W syzkaller #0 [ 81.904511][ T5565] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/18/2026 [ 81.906099][ T5565] Call trace: [ 81.906586][ T5565] dump_backtrace+0x0/0x458 [ 81.907290][ T5565] show_stack+0x2c/0x3c [ 81.907949][ T5565] __dump_stack+0x30/0x40 [ 81.908661][ T5565] dump_stack_lvl+0xf4/0x15c [ 81.909404][ T5565] dump_stack+0x1c/0x5c [ 81.910057][ T5565] should_fail+0x3bc/0x514 [ 81.910811][ T5565] __should_failslab+0xbc/0x10c [ 81.911660][ T5565] should_failslab+0x10/0x28 [ 81.912419][ T5565] slab_pre_alloc_hook+0x64/0xe8 [ 81.913213][ T5565] kmem_cache_alloc+0x94/0x3d4 [ 81.913949][ T5565] btrfs_alloc_path+0x5c/0x68 [ 81.914737][ T5565] btrfs_insert_dir_item+0x184/0x3e8 [ 81.915613][ T5565] btrfs_add_link+0x2b0/0xa9c [ 81.916402][ T5565] btrfs_create+0x468/0x514 [ 81.917139][ T5565] path_openat+0xe18/0x2718 [ 81.917864][ T5565] do_filp_open+0x184/0x368 [ 81.918640][ T5565] do_sys_openat2+0x134/0x3f4 [ 81.919428][ T5565] __arm64_sys_openat+0x118/0x14c [ 81.920226][ T5565] invoke_syscall+0x98/0x2b0 [ 81.920899][ T5565] el0_svc_common+0x138/0x258 [ 81.921765][ T5565] do_el0_svc+0x58/0x13c [ 81.922460][ T5565] el0_svc+0x78/0x1d0 [ 81.923129][ T5565] el0t_64_sync_handler+0xcc/0xe4 [ 81.924006][ T5565] el0t_64_sync+0x1a0/0x1a4 [ 81.955560][ T5565] ------------[ cut here ]------------ [ 81.956563][ T5565] WARNING: CPU: 0 PID: 5565 at fs/btrfs/inode.c:6776 btrfs_add_link+0x718/0xa9c [ 81.958111][ T5565] Modules linked in: [ 81.958740][ T5565] CPU: 0 PID: 5565 Comm: syz.0.42 Tainted: G W syzkaller #0 [ 81.960221][ T5565] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/18/2026 [ 81.961839][ T5565] pstate: 62400005 (nZCv daif +PAN -UAO +TCO -DIT -SSBS BTYPE=--) [ 81.963176][ T5565] pc : btrfs_add_link+0x718/0xa9c [ 81.964071][ T5565] lr : btrfs_add_link+0x718/0xa9c [ 81.964913][ T5565] sp : ffff800021af7580 [ 81.965673][ T5565] x29: ffff800021af7680 x28: ffff0000de9d14d0 x27: 0000000000000108 [ 81.967065][ T5565] x26: 00000000fffffff4 x25: 0000000000000000 x24: dfff800000000000 [ 81.968459][ T5565] x23: 0000000000000014 x22: 1fffe0001bd3a2a5 x21: ffff70000435eeb8 [ 81.969854][ T5565] x20: 00000000fffffff4 x19: ffff0000de9d1528 x18: 0000000000000001 [ 81.971208][ T5565] x17: 0000000000000000 x16: ffff80001125f448 x15: 00000000ffffffff [ 81.972535][ T5565] x14: 0000000000000001 x13: 1fffe000341f05ab x12: 0000000000ff0100 [ 81.973883][ T5565] x11: 0000000000000000 x10: 0000000000000000 x9 : 703d7be05b8ac200 [ 81.975281][ T5565] x8 : 703d7be05b8ac200 x7 : 0000000000000001 x6 : 0000000000000001 [ 81.976685][ T5565] x5 : ffff800021af6e98 x4 : ffff80001437f3e0 x3 : ffff800008509220 [ 81.978101][ T5565] x2 : 0000000000000001 x1 : 0000000100000000 x0 : 0000000000000026 [ 81.979472][ T5565] Call trace: [ 81.980046][ T5565] btrfs_add_link+0x718/0xa9c [ 81.980792][ T5565] btrfs_create+0x468/0x514 [ 81.981537][ T5565] path_openat+0xe18/0x2718 [ 81.982275][ T5565] do_filp_open+0x184/0x368 [ 81.983022][ T5565] do_sys_openat2+0x134/0x3f4 [ 81.983824][ T5565] __arm64_sys_openat+0x118/0x14c [ 81.984652][ T5565] invoke_syscall+0x98/0x2b0 [ 81.985393][ T5565] el0_svc_common+0x138/0x258 [ 81.986073][ T5565] do_el0_svc+0x58/0x13c [ 81.986771][ T5565] el0_svc+0x78/0x1d0 [ 81.987458][ T5565] el0t_64_sync_handler+0xcc/0xe4 [ 81.988291][ T5565] el0t_64_sync+0x1a0/0x1a4 [ 81.988944][ T5565] irq event stamp: 79698 [ 81.989624][ T5565] hardirqs last enabled at (79697): [] __up_console_sem+0xb4/0xfc [ 81.991104][ T5565] hardirqs last disabled at (79698): [] el1_dbg+0x24/0x80 [ 81.992545][ T5565] softirqs last enabled at (79678): [] handle_softirqs+0xa40/0xbe4 [ 81.993923][ T5565] softirqs last disabled at (79649): [] __irq_exit_rcu+0x240/0x43c [ 81.995469][ T5565] ---[ end trace a09483aa755ef163 ]--- [ 81.996441][ T5565] BTRFS: error (device loop0) in btrfs_add_link:6776: errno=-12 Out of memory [ 82.262359][ T5587] BTRFS: device fsid ed167579-eb65-4e76-9a50-61ac97e9b59d devid 1 transid 8 /dev/loop0 scanned by syz.0.43 (5587) [ 82.288165][ T5587] FAULT_INJECTION: forcing a failure. [ 82.288165][ T5587] name failslab, interval 1, probability 0, space 0, times 0 [ 82.290196][ T5587] CPU: 1 PID: 5587 Comm: syz.0.43 Tainted: G W syzkaller #0 [ 82.291585][ T5587] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/18/2026 [ 82.293245][ T5587] Call trace: [ 82.293787][ T5587] dump_backtrace+0x0/0x458 [ 82.294514][ T5587] show_stack+0x2c/0x3c [ 82.295221][ T5587] __dump_stack+0x30/0x40 [ 82.295904][ T5587] dump_stack_lvl+0xf4/0x15c [ 82.296663][ T5587] dump_stack+0x1c/0x5c [ 82.297287][ T5587] should_fail+0x3bc/0x514 [ 82.297951][ T5587] __should_failslab+0xbc/0x10c [ 82.298764][ T5587] should_failslab+0x10/0x28 [ 82.299586][ T5587] slab_pre_alloc_hook+0x64/0xe8 [ 82.300436][ T5587] kmem_cache_alloc+0x94/0x3d4 [ 82.301253][ T5587] btrfs_alloc_path+0x5c/0x68 [ 82.302009][ T5587] btrfs_insert_dir_item+0x184/0x3e8 [ 82.302899][ T5587] btrfs_add_link+0x2b0/0xa9c [ 82.303651][ T5587] btrfs_create+0x468/0x514 [ 82.304409][ T5587] path_openat+0xe18/0x2718 [ 82.305147][ T5587] do_filp_open+0x184/0x368 [ 82.305908][ T5587] do_sys_openat2+0x134/0x3f4 [ 82.306654][ T5587] __arm64_sys_openat+0x118/0x14c [ 82.307462][ T5587] invoke_syscall+0x98/0x2b0 [ 82.308198][ T5587] el0_svc_common+0x138/0x258 [ 82.308933][ T5587] do_el0_svc+0x58/0x13c [ 82.309593][ T5587] el0_svc+0x78/0x1d0 [ 82.310308][ T5587] el0t_64_sync_handler+0xcc/0xe4 [ 82.311110][ T5587] el0t_64_sync+0x1a0/0x1a4 [ 82.312344][ T5587] ------------[ cut here ]------------ [ 82.313352][ T5587] WARNING: CPU: 1 PID: 5587 at fs/btrfs/inode.c:6776 btrfs_add_link+0x718/0xa9c [ 82.314850][ T5587] Modules linked in: [ 82.315575][ T5587] CPU: 1 PID: 5587 Comm: syz.0.43 Tainted: G W syzkaller #0 [ 82.317055][ T5587] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/18/2026 [ 82.318668][ T5587] pstate: 62400005 (nZCv daif +PAN -UAO +TCO -DIT -SSBS BTYPE=--) [ 82.320026][ T5587] pc : btrfs_add_link+0x718/0xa9c [ 82.320801][ T5587] lr : btrfs_add_link+0x718/0xa9c [ 82.321615][ T5587] sp : ffff800022437580 [ 82.322250][ T5587] x29: ffff800022437680 x28: ffff0000de9d1210 x27: 0000000000000108 [ 82.323626][ T5587] x26: 00000000fffffff4 x25: 0000000000000000 x24: dfff800000000000 [ 82.325001][ T5587] x23: 0000000000000014 x22: 1fffe0001bd3a24d x21: ffff700004486eb8 [ 82.326313][ T5587] x20: 00000000fffffff4 x19: ffff0000de9d1268 x18: 0000000000000001 [ 82.327613][ T5587] x17: 0000000000000000 x16: ffff80001125f448 x15: 00000000ffffffff [ 82.328970][ T5587] x14: 0000000000000001 x13: 1fffe000341f47ab x12: 0000000000ff0100 [ 82.330352][ T5587] x11: 0000000000000000 x10: 0000000000000000 x9 : 9e294a2d6355c100 [ 82.331714][ T5587] x8 : 9e294a2d6355c100 x7 : 0000000000000001 x6 : 0000000000000001 [ 82.332961][ T5587] x5 : ffff800022436e98 x4 : ffff80001437f3e0 x3 : ffff800008509220 [ 82.334209][ T5587] x2 : 0000000000000001 x1 : 0000000100000000 x0 : 0000000000000026 [ 82.335517][ T5587] Call trace: [ 82.336021][ T5587] btrfs_add_link+0x718/0xa9c [ 82.336739][ T5587] btrfs_create+0x468/0x514 [ 82.337448][ T5587] path_openat+0xe18/0x2718 [ 82.338171][ T5587] do_filp_open+0x184/0x368 [ 82.338887][ T5587] do_sys_openat2+0x134/0x3f4 [ 82.339630][ T5587] __arm64_sys_openat+0x118/0x14c [ 82.340446][ T5587] invoke_syscall+0x98/0x2b0 [ 82.341219][ T5587] el0_svc_common+0x138/0x258 [ 82.341964][ T5587] do_el0_svc+0x58/0x13c [ 82.342670][ T5587] el0_svc+0x78/0x1d0 [ 82.343305][ T5587] el0t_64_sync_handler+0xcc/0xe4 [ 82.344104][ T5587] el0t_64_sync+0x1a0/0x1a4 [ 82.344859][ T5587] irq event stamp: 79958 [ 82.345562][ T5587] hardirqs last enabled at (79957): [] __up_console_sem+0xb4/0xfc [ 82.347114][ T5587] hardirqs last disabled at (79958): [] el1_dbg+0x24/0x80 [ 82.348597][ T5587] softirqs last enabled at (79938): [] handle_softirqs+0xa40/0xbe4 [ 82.350113][ T5587] softirqs last disabled at (79887): [] __irq_exit_rcu+0x240/0x43c [ 82.351647][ T5587] ---[ end trace a09483aa755ef164 ]--- [ 82.353094][ T5587] BTRFS: error (device loop0) in btrfs_add_link:6776: errno=-12 Out of memory [ 82.495272][ T5609] BTRFS: device fsid ed167579-eb65-4e76-9a50-61ac97e9b59d devid 1 transid 8 /dev/loop0 scanned by syz.0.44 (5609) [ 82.512665][ T5609] FAULT_INJECTION: forcing a failure. [ 82.512665][ T5609] name failslab, interval 1, probability 0, space 0, times 0 [ 82.515007][ T5609] CPU: 0 PID: 5609 Comm: syz.0.44 Tainted: G W syzkaller #0 [ 82.516406][ T5609] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/18/2026 [ 82.518151][ T5609] Call trace: [ 82.518779][ T5609] dump_backtrace+0x0/0x458 [ 82.519481][ T5609] show_stack+0x2c/0x3c [ 82.520122][ T5609] __dump_stack+0x30/0x40 [ 82.520869][ T5609] dump_stack_lvl+0xf4/0x15c [ 82.521701][ T5609] dump_stack+0x1c/0x5c [ 82.522458][ T5609] should_fail+0x3bc/0x514 [ 82.523189][ T5609] __should_failslab+0xbc/0x10c [ 82.523977][ T5609] should_failslab+0x10/0x28 [ 82.524687][ T5609] slab_pre_alloc_hook+0x64/0xe8 [ 82.525437][ T5609] kmem_cache_alloc+0x94/0x3d4 [ 82.526201][ T5609] btrfs_alloc_path+0x5c/0x68 [ 82.526947][ T5609] btrfs_insert_dir_item+0x184/0x3e8 [ 82.527758][ T5609] btrfs_add_link+0x2b0/0xa9c [ 82.528474][ T5609] btrfs_create+0x468/0x514 [ 82.529129][ T5609] path_openat+0xe18/0x2718 [ 82.529795][ T5609] do_filp_open+0x184/0x368 [ 82.530508][ T5609] do_sys_openat2+0x134/0x3f4 [ 82.531202][ T5609] __arm64_sys_openat+0x118/0x14c [ 82.531942][ T5609] invoke_syscall+0x98/0x2b0 [ 82.532679][ T5609] el0_svc_common+0x138/0x258 [ 82.533421][ T5609] do_el0_svc+0x58/0x13c [ 82.534062][ T5609] el0_svc+0x78/0x1d0 [ 82.534707][ T5609] el0t_64_sync_handler+0xcc/0xe4 [ 82.535476][ T5609] el0t_64_sync+0x1a0/0x1a4 [ 82.537768][ T5609] ------------[ cut here ]------------ [ 82.538802][ T5609] WARNING: CPU: 0 PID: 5609 at fs/btrfs/inode.c:6776 btrfs_add_link+0x718/0xa9c [ 82.540188][ T5609] Modules linked in: [ 82.540821][ T5609] CPU: 0 PID: 5609 Comm: syz.0.44 Tainted: G W syzkaller #0 [ 82.542055][ T5609] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/18/2026 [ 82.543641][ T5609] pstate: 62400005 (nZCv daif +PAN -UAO +TCO -DIT -SSBS BTYPE=--) [ 82.544886][ T5609] pc : btrfs_add_link+0x718/0xa9c [ 82.545673][ T5609] lr : btrfs_add_link+0x718/0xa9c [ 82.546507][ T5609] sp : ffff800022617580 [ 82.547178][ T5609] x29: ffff800022617680 x28: ffff0000deb802c0 x27: 0000000000000108 [ 82.548638][ T5609] x26: 00000000fffffff4 x25: 0000000000000000 x24: dfff800000000000 [ 82.550008][ T5609] x23: 0000000000000014 x22: 1fffe0001bd70063 x21: ffff7000044c2eb8 [ 82.551420][ T5609] x20: 00000000fffffff4 x19: ffff0000deb80318 x18: 0000000000000001 [ 82.552709][ T5609] x17: 0000000000000000 x16: ffff80001125f448 x15: 00000000ffffffff [ 82.554119][ T5609] x14: 0000000000000001 x13: 1fffe000341f05ab x12: 0000000000ff0100 [ 82.555475][ T5609] x11: 0000000000000000 x10: 0000000000000000 x9 : 1e3ef894adef2900 [ 82.556855][ T5609] x8 : 1e3ef894adef2900 x7 : 0000000000000001 x6 : 0000000000000001 [ 82.558217][ T5609] x5 : ffff800022616e98 x4 : ffff80001437f3e0 x3 : ffff800008509220 [ 82.559702][ T5609] x2 : 0000000000000001 x1 : 0000000100000000 x0 : 0000000000000026 [ 82.561054][ T5609] Call trace: [ 82.561623][ T5609] btrfs_add_link+0x718/0xa9c [ 82.562407][ T5609] btrfs_create+0x468/0x514 [ 82.563131][ T5609] path_openat+0xe18/0x2718 [ 82.563885][ T5609] do_filp_open+0x184/0x368 [ 82.564656][ T5609] do_sys_openat2+0x134/0x3f4 [ 82.565457][ T5609] __arm64_sys_openat+0x118/0x14c [ 82.566290][ T5609] invoke_syscall+0x98/0x2b0 [ 82.567106][ T5609] el0_svc_common+0x138/0x258 [ 82.567928][ T5609] do_el0_svc+0x58/0x13c [ 82.568681][ T5609] el0_svc+0x78/0x1d0 [ 82.569430][ T5609] el0t_64_sync_handler+0xcc/0xe4 [ 82.570279][ T5609] el0t_64_sync+0x1a0/0x1a4 [ 82.570995][ T5609] irq event stamp: 79820 [ 82.571644][ T5609] hardirqs last enabled at (79819): [] __up_console_sem+0xb4/0xfc [ 82.573125][ T5609] hardirqs last disabled at (79820): [] el1_dbg+0x24/0x80 [ 82.574545][ T5609] softirqs last enabled at (79810): [] handle_softirqs+0xa40/0xbe4 [ 82.576105][ T5609] softirqs last disabled at (79803): [] __irq_exit_rcu+0x240/0x43c [ 82.577516][ T5609] ---[ end trace a09483aa755ef165 ]--- [ 82.579746][ T5609] BTRFS: error (device loop0) in btrfs_add_link:6776: errno=-12 Out of memory 1970/01/01 00:01:22 executed programs: 32 [ 82.759127][ T5631] BTRFS: device fsid ed167579-eb65-4e76-9a50-61ac97e9b59d devid 1 transid 8 /dev/loop0 scanned by syz.0.45 (5631) [ 82.823833][ T5631] FAULT_INJECTION: forcing a failure. [ 82.823833][ T5631] name failslab, interval 1, probability 0, space 0, times 0 [ 82.826083][ T5631] CPU: 0 PID: 5631 Comm: syz.0.45 Tainted: G W syzkaller #0 [ 82.827538][ T5631] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/18/2026 [ 82.829283][ T5631] Call trace: [ 82.829837][ T5631] dump_backtrace+0x0/0x458 [ 82.830627][ T5631] show_stack+0x2c/0x3c [ 82.831319][ T5631] __dump_stack+0x30/0x40 [ 82.832028][ T5631] dump_stack_lvl+0xf4/0x15c [ 82.832873][ T5631] dump_stack+0x1c/0x5c [ 82.833529][ T5631] should_fail+0x3bc/0x514 [ 82.834341][ T5631] __should_failslab+0xbc/0x10c [ 82.835182][ T5631] should_failslab+0x10/0x28 [ 82.835978][ T5631] slab_pre_alloc_hook+0x64/0xe8 [ 82.836857][ T5631] kmem_cache_alloc+0x94/0x3d4 [ 82.837655][ T5631] btrfs_alloc_path+0x5c/0x68 [ 82.838475][ T5631] btrfs_insert_dir_item+0x184/0x3e8 [ 82.839354][ T5631] btrfs_add_link+0x2b0/0xa9c [ 82.840124][ T5631] btrfs_create+0x468/0x514 [ 82.840872][ T5631] path_openat+0xe18/0x2718 [ 82.841643][ T5631] do_filp_open+0x184/0x368 [ 82.842388][ T5631] do_sys_openat2+0x134/0x3f4 [ 82.843189][ T5631] __arm64_sys_openat+0x118/0x14c [ 82.844058][ T5631] invoke_syscall+0x98/0x2b0 [ 82.844875][ T5631] el0_svc_common+0x138/0x258 [ 82.845661][ T5631] do_el0_svc+0x58/0x13c [ 82.846400][ T5631] el0_svc+0x78/0x1d0 [ 82.847099][ T5631] el0t_64_sync_handler+0xcc/0xe4 [ 82.848004][ T5631] el0t_64_sync+0x1a0/0x1a4 [ 82.849544][ T5631] ------------[ cut here ]------------ [ 82.850693][ T5631] WARNING: CPU: 0 PID: 5631 at fs/btrfs/inode.c:6776 btrfs_add_link+0x718/0xa9c [ 82.852064][ T5631] Modules linked in: [ 82.852704][ T5631] CPU: 0 PID: 5631 Comm: syz.0.45 Tainted: G W syzkaller #0 [ 82.854081][ T5631] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/18/2026 [ 82.855657][ T5631] pstate: 62400005 (nZCv daif +PAN -UAO +TCO -DIT -SSBS BTYPE=--) [ 82.856920][ T5631] pc : btrfs_add_link+0x718/0xa9c [ 82.857746][ T5631] lr : btrfs_add_link+0x718/0xa9c [ 82.858661][ T5631] sp : ffff800022617580 [ 82.859375][ T5631] x29: ffff800022617680 x28: ffff0000deb80580 x27: 0000000000000108 [ 82.860756][ T5631] x26: 00000000fffffff4 x25: 0000000000000000 x24: dfff800000000000 [ 82.862071][ T5631] x23: 0000000000000014 x22: 1fffe0001bd700bb x21: ffff7000044c2eb8 [ 82.863432][ T5631] x20: 00000000fffffff4 x19: ffff0000deb805d8 x18: 0000000000000001 [ 82.864766][ T5631] x17: 0000000000000000 x16: ffff80001125f448 x15: 00000000ffffffff [ 82.866132][ T5631] x14: 0000000000000001 x13: 1fffe000341f05ab x12: 0000000000ff0100 [ 82.867443][ T5631] x11: 0000000000000000 x10: 0000000000000000 x9 : e214b7fa1faf0600 [ 82.868837][ T5631] x8 : e214b7fa1faf0600 x7 : 0000000000000001 x6 : 0000000000000001 [ 82.870229][ T5631] x5 : ffff800022616e98 x4 : ffff80001437f3e0 x3 : ffff800008509220 [ 82.871598][ T5631] x2 : 0000000000000001 x1 : 0000000100000000 x0 : 0000000000000026 [ 82.872982][ T5631] Call trace: [ 82.873537][ T5631] btrfs_add_link+0x718/0xa9c [ 82.874302][ T5631] btrfs_create+0x468/0x514 [ 82.875083][ T5631] path_openat+0xe18/0x2718 [ 82.875847][ T5631] do_filp_open+0x184/0x368 [ 82.876573][ T5631] do_sys_openat2+0x134/0x3f4 [ 82.877374][ T5631] __arm64_sys_openat+0x118/0x14c [ 82.878251][ T5631] invoke_syscall+0x98/0x2b0 [ 82.879075][ T5631] el0_svc_common+0x138/0x258 [ 82.879869][ T5631] do_el0_svc+0x58/0x13c [ 82.880545][ T5631] el0_svc+0x78/0x1d0 [ 82.881247][ T5631] el0t_64_sync_handler+0xcc/0xe4 [ 82.882164][ T5631] el0t_64_sync+0x1a0/0x1a4 [ 82.882913][ T5631] irq event stamp: 79728 [ 82.883652][ T5631] hardirqs last enabled at (79727): [] __up_console_sem+0xb4/0xfc [ 82.885339][ T5631] hardirqs last disabled at (79728): [] el1_dbg+0x24/0x80 [ 82.886846][ T5631] softirqs last enabled at (79704): [] handle_softirqs+0xa40/0xbe4 [ 82.888373][ T5631] softirqs last disabled at (79657): [] __irq_exit_rcu+0x240/0x43c [ 82.889812][ T5631] ---[ end trace a09483aa755ef166 ]--- [ 82.892408][ T5631] BTRFS: error (device loop0) in btrfs_add_link:6776: errno=-12 Out of memory [ 83.142121][ T5653] BTRFS: device fsid ed167579-eb65-4e76-9a50-61ac97e9b59d devid 1 transid 8 /dev/loop0 scanned by syz.0.46 (5653) [ 83.158960][ T5653] FAULT_INJECTION: forcing a failure. [ 83.158960][ T5653] name failslab, interval 1, probability 0, space 0, times 0 [ 83.160987][ T5653] CPU: 0 PID: 5653 Comm: syz.0.46 Tainted: G W syzkaller #0 [ 83.162377][ T5653] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/18/2026 [ 83.164017][ T5653] Call trace: [ 83.164592][ T5653] dump_backtrace+0x0/0x458 [ 83.165308][ T5653] show_stack+0x2c/0x3c [ 83.165969][ T5653] __dump_stack+0x30/0x40 [ 83.166668][ T5653] dump_stack_lvl+0xf4/0x15c [ 83.167407][ T5653] dump_stack+0x1c/0x5c [ 83.168057][ T5653] should_fail+0x3bc/0x514 [ 83.168761][ T5653] __should_failslab+0xbc/0x10c [ 83.169603][ T5653] should_failslab+0x10/0x28 [ 83.170325][ T5653] slab_pre_alloc_hook+0x64/0xe8 [ 83.171053][ T5653] kmem_cache_alloc+0x94/0x3d4 [ 83.171837][ T5653] btrfs_alloc_path+0x5c/0x68 [ 83.172532][ T5653] btrfs_insert_dir_item+0x184/0x3e8 [ 83.173335][ T5653] btrfs_add_link+0x2b0/0xa9c [ 83.174115][ T5653] btrfs_create+0x468/0x514 [ 83.174803][ T5653] path_openat+0xe18/0x2718 [ 83.175468][ T5653] do_filp_open+0x184/0x368 [ 83.176128][ T5653] do_sys_openat2+0x134/0x3f4 [ 83.176845][ T5653] __arm64_sys_openat+0x118/0x14c [ 83.177685][ T5653] invoke_syscall+0x98/0x2b0 [ 83.178472][ T5653] el0_svc_common+0x138/0x258 [ 83.179237][ T5653] do_el0_svc+0x58/0x13c [ 83.179923][ T5653] el0_svc+0x78/0x1d0 [ 83.180630][ T5653] el0t_64_sync_handler+0xcc/0xe4 [ 83.181504][ T5653] el0t_64_sync+0x1a0/0x1a4 [ 83.184590][ T5653] ------------[ cut here ]------------ [ 83.185511][ T5653] WARNING: CPU: 0 PID: 5653 at fs/btrfs/inode.c:6776 btrfs_add_link+0x718/0xa9c [ 83.186970][ T5653] Modules linked in: [ 83.187615][ T5653] CPU: 0 PID: 5653 Comm: syz.0.46 Tainted: G W syzkaller #0 [ 83.188941][ T5653] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/18/2026 [ 83.190513][ T5653] pstate: 62400005 (nZCv daif +PAN -UAO +TCO -DIT -SSBS BTYPE=--) [ 83.191697][ T5653] pc : btrfs_add_link+0x718/0xa9c [ 83.192455][ T5653] lr : btrfs_add_link+0x718/0xa9c [ 83.193169][ T5653] sp : ffff800022627580 [ 83.193773][ T5653] x29: ffff800022627680 x28: ffff0000deb80840 x27: 0000000000000108 [ 83.194961][ T5653] x26: 00000000fffffff4 x25: 0000000000000000 x24: dfff800000000000 [ 83.196391][ T5653] x23: 0000000000000014 x22: 1fffe0001bd70113 x21: ffff7000044c4eb8 [ 83.197765][ T5653] x20: 00000000fffffff4 x19: ffff0000deb80898 x18: 0000000000000001 [ 83.199181][ T5653] x17: 0000000000000000 x16: ffff80001125f448 x15: 00000000ffffffff [ 83.200548][ T5653] x14: 0000000000000001 x13: 1fffe000341f05ab x12: 0000000000ff0100 [ 83.201850][ T5653] x11: 0000000000000000 x10: 0000000000000000 x9 : 35d3cdca42ee5100 [ 83.203242][ T5653] x8 : 35d3cdca42ee5100 x7 : 0000000000000001 x6 : 0000000000000001 [ 83.204638][ T5653] x5 : ffff800022626e98 x4 : ffff80001437f3e0 x3 : ffff800008509220 [ 83.205945][ T5653] x2 : 0000000000000001 x1 : 0000000100000000 x0 : 0000000000000026 [ 83.207307][ T5653] Call trace: [ 83.207847][ T5653] btrfs_add_link+0x718/0xa9c [ 83.208579][ T5653] btrfs_create+0x468/0x514 [ 83.209311][ T5653] path_openat+0xe18/0x2718 [ 83.210089][ T5653] do_filp_open+0x184/0x368 [ 83.210813][ T5653] do_sys_openat2+0x134/0x3f4 [ 83.211603][ T5653] __arm64_sys_openat+0x118/0x14c [ 83.212408][ T5653] invoke_syscall+0x98/0x2b0 [ 83.213215][ T5653] el0_svc_common+0x138/0x258 [ 83.213974][ T5653] do_el0_svc+0x58/0x13c [ 83.214705][ T5653] el0_svc+0x78/0x1d0 [ 83.215366][ T5653] el0t_64_sync_handler+0xcc/0xe4 [ 83.216195][ T5653] el0t_64_sync+0x1a0/0x1a4 [ 83.216987][ T5653] irq event stamp: 79946 [ 83.217731][ T5653] hardirqs last enabled at (79945): [] __up_console_sem+0xb4/0xfc [ 83.219403][ T5653] hardirqs last disabled at (79946): [] el1_dbg+0x24/0x80 [ 83.220969][ T5653] softirqs last enabled at (79926): [] handle_softirqs+0xa40/0xbe4 [ 83.222640][ T5653] softirqs last disabled at (79909): [] __irq_exit_rcu+0x240/0x43c [ 83.224235][ T5653] ---[ end trace a09483aa755ef167 ]--- [ 83.227266][ T5653] BTRFS: error (device loop0) in btrfs_add_link:6776: errno=-12 Out of memory [ 83.449233][ T5675] BTRFS: device fsid ed167579-eb65-4e76-9a50-61ac97e9b59d devid 1 transid 8 /dev/loop0 scanned by syz.0.47 (5675) [ 83.474275][ T5675] FAULT_INJECTION: forcing a failure. [ 83.474275][ T5675] name failslab, interval 1, probability 0, space 0, times 0 [ 83.476513][ T5675] CPU: 0 PID: 5675 Comm: syz.0.47 Tainted: G W syzkaller #0 [ 83.477939][ T5675] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/18/2026 [ 83.479852][ T5675] Call trace: [ 83.480407][ T5675] dump_backtrace+0x0/0x458 [ 83.481176][ T5675] show_stack+0x2c/0x3c [ 83.481873][ T5675] __dump_stack+0x30/0x40 [ 83.482664][ T5675] dump_stack_lvl+0xf4/0x15c [ 83.483475][ T5675] dump_stack+0x1c/0x5c [ 83.484200][ T5675] should_fail+0x3bc/0x514 [ 83.484978][ T5675] __should_failslab+0xbc/0x10c [ 83.485862][ T5675] should_failslab+0x10/0x28 [ 83.486606][ T5675] slab_pre_alloc_hook+0x64/0xe8 [ 83.487457][ T5675] kmem_cache_alloc+0x94/0x3d4 [ 83.488206][ T5675] btrfs_alloc_path+0x5c/0x68 [ 83.488968][ T5675] btrfs_insert_dir_item+0x184/0x3e8 [ 83.489897][ T5675] btrfs_add_link+0x2b0/0xa9c [ 83.490681][ T5675] btrfs_create+0x468/0x514 [ 83.491519][ T5675] path_openat+0xe18/0x2718 [ 83.492247][ T5675] do_filp_open+0x184/0x368 [ 83.492949][ T5675] do_sys_openat2+0x134/0x3f4 [ 83.493699][ T5675] __arm64_sys_openat+0x118/0x14c [ 83.494461][ T5675] invoke_syscall+0x98/0x2b0 [ 83.495261][ T5675] el0_svc_common+0x138/0x258 [ 83.496057][ T5675] do_el0_svc+0x58/0x13c [ 83.496795][ T5675] el0_svc+0x78/0x1d0 [ 83.497500][ T5675] el0t_64_sync_handler+0xcc/0xe4 [ 83.498363][ T5675] el0t_64_sync+0x1a0/0x1a4 [ 83.500822][ T5675] ------------[ cut here ]------------ [ 83.501793][ T5675] WARNING: CPU: 0 PID: 5675 at fs/btrfs/inode.c:6776 btrfs_add_link+0x718/0xa9c [ 83.503329][ T5675] Modules linked in: [ 83.503989][ T5675] CPU: 0 PID: 5675 Comm: syz.0.47 Tainted: G W syzkaller #0 [ 83.505445][ T5675] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/18/2026 [ 83.507120][ T5675] pstate: 62400005 (nZCv daif +PAN -UAO +TCO -DIT -SSBS BTYPE=--) [ 83.508449][ T5675] pc : btrfs_add_link+0x718/0xa9c [ 83.509295][ T5675] lr : btrfs_add_link+0x718/0xa9c [ 83.510134][ T5675] sp : ffff800022937580 [ 83.510820][ T5675] x29: ffff800022937680 x28: ffff0000deb80b00 x27: 0000000000000108 [ 83.512163][ T5675] x26: 00000000fffffff4 x25: 0000000000000000 x24: dfff800000000000 [ 83.513447][ T5675] x23: 0000000000000014 x22: 1fffe0001bd7016b x21: ffff700004526eb8 [ 83.514853][ T5675] x20: 00000000fffffff4 x19: ffff0000deb80b58 x18: 0000000000000001 [ 83.516161][ T5675] x17: 0000000000000000 x16: ffff80001125f448 x15: 00000000ffffffff [ 83.517443][ T5675] x14: 0000000000000001 x13: 1fffe000341f05ab x12: 0000000000ff0100 [ 83.518846][ T5675] x11: 0000000000000000 x10: 0000000000000000 x9 : 750789c153e06900 [ 83.520150][ T5675] x8 : 750789c153e06900 x7 : 0000000000000001 x6 : 0000000000000001 [ 83.521559][ T5675] x5 : ffff800022936e98 x4 : ffff80001437f3e0 x3 : ffff800008509220 [ 83.523101][ T5675] x2 : 0000000000000001 x1 : 0000000100000000 x0 : 0000000000000026 [ 83.524457][ T5675] Call trace: [ 83.524966][ T5675] btrfs_add_link+0x718/0xa9c [ 83.525725][ T5675] btrfs_create+0x468/0x514 [ 83.526486][ T5675] path_openat+0xe18/0x2718 [ 83.527304][ T5675] do_filp_open+0x184/0x368 [ 83.528136][ T5675] do_sys_openat2+0x134/0x3f4 [ 83.528938][ T5675] __arm64_sys_openat+0x118/0x14c [ 83.529830][ T5675] invoke_syscall+0x98/0x2b0 [ 83.530643][ T5675] el0_svc_common+0x138/0x258 [ 83.531519][ T5675] do_el0_svc+0x58/0x13c [ 83.532327][ T5675] el0_svc+0x78/0x1d0 [ 83.532984][ T5675] el0t_64_sync_handler+0xcc/0xe4 [ 83.533829][ T5675] el0t_64_sync+0x1a0/0x1a4 [ 83.534645][ T5675] irq event stamp: 79582 [ 83.535319][ T5675] hardirqs last enabled at (79581): [] __up_console_sem+0xb4/0xfc [ 83.536842][ T5675] hardirqs last disabled at (79582): [] el1_dbg+0x24/0x80 [ 83.538232][ T5675] softirqs last enabled at (79562): [] handle_softirqs+0xa40/0xbe4 [ 83.539781][ T5675] softirqs last disabled at (79533): [] __irq_exit_rcu+0x240/0x43c [ 83.541354][ T5675] ---[ end trace a09483aa755ef168 ]--- [ 83.544146][ T5675] BTRFS: error (device loop0) in btrfs_add_link:6776: errno=-12 Out of memory [ 83.719224][ T5697] BTRFS: device fsid ed167579-eb65-4e76-9a50-61ac97e9b59d devid 1 transid 8 /dev/loop0 scanned by syz.0.48 (5697) [ 83.799889][ T5697] FAULT_INJECTION: forcing a failure. [ 83.799889][ T5697] name failslab, interval 1, probability 0, space 0, times 0 [ 83.802164][ T5697] CPU: 1 PID: 5697 Comm: syz.0.48 Tainted: G W syzkaller #0 [ 83.803496][ T5697] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/18/2026 [ 83.805131][ T5697] Call trace: [ 83.805683][ T5697] dump_backtrace+0x0/0x458 [ 83.806435][ T5697] show_stack+0x2c/0x3c [ 83.807112][ T5697] __dump_stack+0x30/0x40 [ 83.807826][ T5697] dump_stack_lvl+0xf4/0x15c [ 83.808590][ T5697] dump_stack+0x1c/0x5c [ 83.809305][ T5697] should_fail+0x3bc/0x514 [ 83.810049][ T5697] __should_failslab+0xbc/0x10c [ 83.810889][ T5697] should_failslab+0x10/0x28 [ 83.811653][ T5697] slab_pre_alloc_hook+0x64/0xe8 [ 83.812523][ T5697] kmem_cache_alloc+0x94/0x3d4 [ 83.813244][ T5697] btrfs_alloc_path+0x5c/0x68 [ 83.814011][ T5697] btrfs_insert_dir_item+0x184/0x3e8 [ 83.814912][ T5697] btrfs_add_link+0x2b0/0xa9c [ 83.815650][ T5697] btrfs_create+0x468/0x514 [ 83.816369][ T5697] path_openat+0xe18/0x2718 [ 83.817102][ T5697] do_filp_open+0x184/0x368 [ 83.817841][ T5697] do_sys_openat2+0x134/0x3f4 [ 83.818605][ T5697] __arm64_sys_openat+0x118/0x14c [ 83.819470][ T5697] invoke_syscall+0x98/0x2b0 [ 83.820241][ T5697] el0_svc_common+0x138/0x258 [ 83.821041][ T5697] do_el0_svc+0x58/0x13c [ 83.821785][ T5697] el0_svc+0x78/0x1d0 [ 83.822459][ T5697] el0t_64_sync_handler+0xcc/0xe4 [ 83.823263][ T5697] el0t_64_sync+0x1a0/0x1a4 [ 83.824843][ T5697] ------------[ cut here ]------------ [ 83.825772][ T5697] WARNING: CPU: 1 PID: 5697 at fs/btrfs/inode.c:6776 btrfs_add_link+0x718/0xa9c [ 83.827135][ T5697] Modules linked in: [ 83.827777][ T5697] CPU: 1 PID: 5697 Comm: syz.0.48 Tainted: G W syzkaller #0 [ 83.829187][ T5697] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/18/2026 [ 83.830829][ T5697] pstate: 62400005 (nZCv daif +PAN -UAO +TCO -DIT -SSBS BTYPE=--) [ 83.831992][ T5697] pc : btrfs_add_link+0x718/0xa9c [ 83.832806][ T5697] lr : btrfs_add_link+0x718/0xa9c [ 83.833594][ T5697] sp : ffff800022e97580 [ 83.834230][ T5697] x29: ffff800022e97680 x28: ffff0000deabfdc0 x27: 0000000000000108 [ 83.835565][ T5697] x26: 00000000fffffff4 x25: 0000000000000000 x24: dfff800000000000 [ 83.836976][ T5697] x23: 0000000000000014 x22: 1fffe0001bd57fc3 x21: ffff7000045d2eb8 [ 83.838374][ T5697] x20: 00000000fffffff4 x19: ffff0000deabfe18 x18: 0000000000000001 [ 83.839779][ T5697] x17: 0000000000000000 x16: ffff80001125f448 x15: 00000000ffffffff [ 83.841080][ T5697] x14: 0000000000000001 x13: 1fffe000341f47ab x12: 0000000000ff0100 [ 83.842452][ T5697] x11: 0000000000000000 x10: 0000000000000000 x9 : d7e8a804df11ce00 [ 83.843780][ T5697] x8 : d7e8a804df11ce00 x7 : 0000000000000001 x6 : 0000000000000001 [ 83.845209][ T5697] x5 : ffff800022e96e98 x4 : ffff80001437f3e0 x3 : ffff800008509220 [ 83.846631][ T5697] x2 : 0000000000000001 x1 : 0000000100000000 x0 : 0000000000000026 [ 83.848000][ T5697] Call trace: [ 83.848533][ T5697] btrfs_add_link+0x718/0xa9c [ 83.849338][ T5697] btrfs_create+0x468/0x514 [ 83.850029][ T5697] path_openat+0xe18/0x2718 [ 83.850781][ T5697] do_filp_open+0x184/0x368 [ 83.851479][ T5697] do_sys_openat2+0x134/0x3f4 [ 83.852222][ T5697] __arm64_sys_openat+0x118/0x14c [ 83.853124][ T5697] invoke_syscall+0x98/0x2b0 [ 83.853881][ T5697] el0_svc_common+0x138/0x258 [ 83.854614][ T5697] do_el0_svc+0x58/0x13c [ 83.855285][ T5697] el0_svc+0x78/0x1d0 [ 83.855946][ T5697] el0t_64_sync_handler+0xcc/0xe4 [ 83.856788][ T5697] el0t_64_sync+0x1a0/0x1a4 [ 83.857575][ T5697] irq event stamp: 79586 [ 83.858256][ T5697] hardirqs last enabled at (79585): [] __up_console_sem+0xb4/0xfc [ 83.859951][ T5697] hardirqs last disabled at (79586): [] el1_dbg+0x24/0x80 [ 83.861375][ T5697] softirqs last enabled at (79566): [] handle_softirqs+0xa40/0xbe4 [ 83.863075][ T5697] softirqs last disabled at (79549): [] __irq_exit_rcu+0x240/0x43c [ 83.864656][ T5697] ---[ end trace a09483aa755ef169 ]--- [ 83.866378][ T5697] BTRFS: error (device loop0) in btrfs_add_link:6776: errno=-12 Out of memory