Warning: Permanently added '10.128.0.212' (ED25519) to the list of known hosts. 1970/01/01 00:01:00 ignoring optional flag "type"="gce" 1970/01/01 00:01:00 parsed 1 programs [ 61.870765][ T4369] Adding 124996k swap on ./swap-file. Priority:0 extents:1 across:124996k SSFS [ 63.271293][ T4469] chnl_net:caif_netlink_parms(): no params data found [ 63.290414][ T4469] bridge0: port 1(bridge_slave_0) entered blocking state [ 63.291594][ T4469] bridge0: port 1(bridge_slave_0) entered disabled state [ 63.293124][ T4469] device bridge_slave_0 entered promiscuous mode [ 63.295368][ T4469] bridge0: port 2(bridge_slave_1) entered blocking state [ 63.296484][ T4469] bridge0: port 2(bridge_slave_1) entered disabled state [ 63.298045][ T4469] device bridge_slave_1 entered promiscuous mode [ 63.307833][ T4469] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 63.310805][ T4469] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 63.320875][ T4469] team0: Port device team_slave_0 added [ 63.323686][ T4469] team0: Port device team_slave_1 added [ 63.330944][ T4469] batman_adv: batadv0: Adding interface: batadv_slave_0 [ 63.332102][ T4469] 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. [ 63.336452][ T4469] batman_adv: batadv0: Not using interface batadv_slave_0 (retrying later): interface not active [ 63.338875][ T4469] batman_adv: batadv0: Adding interface: batadv_slave_1 [ 63.340084][ T4469] 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. [ 63.343939][ T4469] batman_adv: batadv0: Not using interface batadv_slave_1 (retrying later): interface not active [ 63.390345][ T4469] device hsr_slave_0 entered promiscuous mode [ 63.459955][ T4469] device hsr_slave_1 entered promiscuous mode [ 64.164559][ T4469] netdevsim netdevsim0 netdevsim0: renamed from eth0 [ 64.190882][ T4469] netdevsim netdevsim0 netdevsim1: renamed from eth1 [ 64.250356][ T4469] netdevsim netdevsim0 netdevsim2: renamed from eth2 [ 64.300876][ T4469] netdevsim netdevsim0 netdevsim3: renamed from eth3 [ 64.378232][ T4469] 8021q: adding VLAN 0 to HW filter on device bond0 [ 64.383959][ T136] IPv6: ADDRCONF(NETDEV_CHANGE): veth1: link becomes ready [ 64.385431][ T136] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 64.387998][ T4469] 8021q: adding VLAN 0 to HW filter on device team0 [ 64.391392][ T136] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bridge: link becomes ready [ 64.392925][ T136] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 64.394461][ T136] bridge0: port 1(bridge_slave_0) entered blocking state [ 64.395755][ T136] bridge0: port 1(bridge_slave_0) entered forwarding state [ 64.398176][ T136] IPv6: ADDRCONF(NETDEV_CHANGE): bridge0: link becomes ready [ 64.410595][ T148] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bridge: link becomes ready [ 64.412210][ T148] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 64.413708][ T148] bridge0: port 2(bridge_slave_1) entered blocking state [ 64.414705][ T148] bridge0: port 2(bridge_slave_1) entered forwarding state [ 64.430087][ T136] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bond: link becomes ready [ 64.432922][ T148] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bond: link becomes ready [ 64.435612][ T136] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_team: link becomes ready [ 64.437655][ T136] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 64.440668][ T136] IPv6: ADDRCONF(NETDEV_CHANGE): team0: link becomes ready [ 64.445661][ T136] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_team: link becomes ready [ 64.447265][ T136] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 64.450302][ T148] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_hsr: link becomes ready [ 64.451763][ T148] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 64.455053][ T393] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_hsr: link becomes ready [ 64.456547][ T393] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 64.470104][ T4469] IPv6: ADDRCONF(NETDEV_CHANGE): hsr0: link becomes ready [ 64.533357][ T393] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan1: link becomes ready [ 64.534619][ T393] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan0: link becomes ready [ 64.538086][ T4469] 8021q: adding VLAN 0 to HW filter on device batadv0 [ 64.550339][ T393] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_virt_wifi: link becomes ready [ 64.551885][ T393] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_virt_wifi: link becomes ready [ 64.558788][ T4469] device veth0_vlan entered promiscuous mode [ 64.561361][ T393] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_vlan: link becomes ready [ 64.562964][ T393] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_vlan: link becomes ready [ 64.564927][ T393] IPv6: ADDRCONF(NETDEV_CHANGE): vlan0: link becomes ready [ 64.566270][ T393] IPv6: ADDRCONF(NETDEV_CHANGE): vlan1: link becomes ready [ 64.572028][ T4469] device veth1_vlan entered promiscuous mode [ 64.581732][ T136] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan0: link becomes ready [ 64.583364][ T136] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan1: link becomes ready [ 64.584841][ T136] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_macvtap: link becomes ready [ 64.586291][ T136] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_macvtap: link becomes ready [ 64.590462][ T4469] device veth0_macvtap entered promiscuous mode [ 64.593273][ T4469] device veth1_macvtap entered promiscuous mode [ 64.600490][ T4469] batman_adv: batadv0: Interface activated: batadv_slave_0 [ 64.601750][ T136] IPv6: ADDRCONF(NETDEV_CHANGE): macvtap0: link becomes ready [ 64.603652][ T136] IPv6: ADDRCONF(NETDEV_CHANGE): macsec0: link becomes ready [ 64.605058][ T136] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_0: link becomes ready [ 64.606592][ T136] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_batadv: link becomes ready [ 64.614337][ T4469] batman_adv: batadv0: Interface activated: batadv_slave_1 [ 64.616402][ T136] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_1: link becomes ready [ 64.617900][ T136] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_batadv: link becomes ready [ 64.620939][ T4469] netdevsim netdevsim0 netdevsim0: set [1, 0] type 2 family 0 port 6081 - 0 [ 64.622337][ T4469] netdevsim netdevsim0 netdevsim1: set [1, 0] type 2 family 0 port 6081 - 0 [ 64.623711][ T4469] netdevsim netdevsim0 netdevsim2: set [1, 0] type 2 family 0 port 6081 - 0 [ 64.625085][ T4469] netdevsim netdevsim0 netdevsim3: set [1, 0] type 2 family 0 port 6081 - 0 [ 64.952832][ T446] netdevsim netdevsim0 netdevsim3 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 64.979964][ T393] wlan0: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 64.981352][ T393] wlan0: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 64.982704][ T136] IPv6: ADDRCONF(NETDEV_CHANGE): wlan0: link becomes ready [ 64.995389][ T393] wlan1: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 64.996729][ T393] wlan1: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 64.998042][ T148] IPv6: ADDRCONF(NETDEV_CHANGE): wlan1: link becomes ready [ 67.952872][ T446] netdevsim netdevsim0 netdevsim2 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 69.600547][ T25] cfg80211: failed to load regulatory.db [ 69.600779][ T2063] ieee802154 phy0 wpan0: encryption failed: -22 [ 69.602634][ T2063] ieee802154 phy1 wpan1: encryption failed: -22 [ 70.502747][ T446] netdevsim netdevsim0 netdevsim1 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 70.564126][ T446] netdevsim netdevsim0 netdevsim0 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 1970/01/01 00:01:11 executed programs: 0 [ 71.208118][ T4876] chnl_net:caif_netlink_parms(): no params data found [ 71.246398][ T4876] bridge0: port 1(bridge_slave_0) entered blocking state [ 71.247618][ T4876] bridge0: port 1(bridge_slave_0) entered disabled state [ 71.250273][ T4876] device bridge_slave_0 entered promiscuous mode [ 71.257956][ T4876] bridge0: port 2(bridge_slave_1) entered blocking state [ 71.260808][ T4876] bridge0: port 2(bridge_slave_1) entered disabled state [ 71.262433][ T4876] device bridge_slave_1 entered promiscuous mode [ 71.281064][ T4876] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 71.284471][ T4876] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 71.294623][ T4876] team0: Port device team_slave_0 added [ 71.297078][ T4876] team0: Port device team_slave_1 added [ 71.305282][ T4876] batman_adv: batadv0: Adding interface: batadv_slave_0 [ 71.306418][ T4876] batman_adv: batadv0: The MTU of interface batadv_slave_0 is too small (1500) to handle the transport of batman-adv packets. Packets going over this interface will be fragmented on layer2 which could impact the performance. Setting the MTU to 1560 would solve the problem. [ 71.311477][ T4876] batman_adv: batadv0: Not using interface batadv_slave_0 (retrying later): interface not active [ 71.314090][ T4876] batman_adv: batadv0: Adding interface: batadv_slave_1 [ 71.315076][ T4876] batman_adv: batadv0: The MTU of interface batadv_slave_1 is too small (1500) to handle the transport of batman-adv packets. Packets going over this interface will be fragmented on layer2 which could impact the performance. Setting the MTU to 1560 would solve the problem. [ 71.321283][ T4876] batman_adv: batadv0: Not using interface batadv_slave_1 (retrying later): interface not active [ 71.371371][ T4876] device hsr_slave_0 entered promiscuous mode [ 71.429425][ T4876] device hsr_slave_1 entered promiscuous mode [ 71.469055][ T4876] debugfs: Directory 'hsr0' with parent 'hsr' already present! [ 71.470235][ T4876] Cannot create hsr debugfs directory [ 71.913397][ T446] device hsr_slave_0 left promiscuous mode [ 71.939218][ T446] device hsr_slave_1 left promiscuous mode [ 72.009036][ T446] batman_adv: batadv0: Interface deactivated: batadv_slave_0 [ 72.010241][ T446] batman_adv: batadv0: Removing interface: batadv_slave_0 [ 72.011827][ T446] batman_adv: batadv0: Interface deactivated: batadv_slave_1 [ 72.013092][ T446] batman_adv: batadv0: Removing interface: batadv_slave_1 [ 72.014552][ T446] device bridge_slave_1 left promiscuous mode [ 72.015574][ T446] bridge0: port 2(bridge_slave_1) entered disabled state [ 72.069624][ T446] device bridge_slave_0 left promiscuous mode [ 72.070714][ T446] bridge0: port 1(bridge_slave_0) entered disabled state [ 72.199222][ T446] device veth1_macvtap left promiscuous mode [ 72.200188][ T446] device veth0_macvtap left promiscuous mode [ 72.201407][ T446] device veth1_vlan left promiscuous mode [ 72.202366][ T446] device veth0_vlan left promiscuous mode [ 72.314068][ T446] team0 (unregistering): Port device team_slave_1 removed [ 72.318744][ T446] team0 (unregistering): Port device team_slave_0 removed [ 72.325328][ T446] bond0 (unregistering): (slave bond_slave_1): Releasing backup interface [ 72.362706][ T446] bond0 (unregistering): (slave bond_slave_0): Releasing backup interface [ 72.495113][ T446] bond0 (unregistering): Released all slaves [ 72.693538][ T4876] netdevsim netdevsim0 netdevsim0: renamed from eth0 [ 72.730402][ T4876] netdevsim netdevsim0 netdevsim1: renamed from eth1 [ 72.750486][ T4876] netdevsim netdevsim0 netdevsim2: renamed from eth2 [ 72.781187][ T4876] netdevsim netdevsim0 netdevsim3: renamed from eth3 [ 72.844722][ T4876] 8021q: adding VLAN 0 to HW filter on device bond0 [ 72.850409][ T148] IPv6: ADDRCONF(NETDEV_CHANGE): veth1: link becomes ready [ 72.852158][ T148] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 72.854832][ T4876] 8021q: adding VLAN 0 to HW filter on device team0 [ 72.862556][ T148] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bridge: link becomes ready [ 72.864582][ T148] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 72.866175][ T148] bridge0: port 1(bridge_slave_0) entered blocking state [ 72.867302][ T148] bridge0: port 1(bridge_slave_0) entered forwarding state [ 72.868837][ T148] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bridge: link becomes ready [ 72.871698][ T148] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 72.873224][ T148] bridge0: port 2(bridge_slave_1) entered blocking state [ 72.874333][ T148] bridge0: port 2(bridge_slave_1) entered forwarding state [ 72.876195][ T148] IPv6: ADDRCONF(NETDEV_CHANGE): bridge0: link becomes ready [ 72.886537][ T4876] hsr0: Slave A (hsr_slave_0) is not up; please bring it up to get a fully working HSR network [ 72.888201][ T4876] hsr0: Slave B (hsr_slave_1) is not up; please bring it up to get a fully working HSR network [ 72.895152][ T393] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bond: link becomes ready [ 72.897112][ T393] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bond: link becomes ready [ 72.898835][ T393] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_team: link becomes ready [ 72.901479][ T393] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 72.903114][ T393] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_team: link becomes ready [ 72.904754][ T393] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 72.909999][ T393] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_hsr: link becomes ready [ 72.911579][ T393] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 72.913268][ T393] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_hsr: link becomes ready [ 72.915322][ T393] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 72.916798][ T393] IPv6: ADDRCONF(NETDEV_CHANGE): team0: link becomes ready [ 72.918262][ T393] IPv6: ADDRCONF(NETDEV_CHANGE): hsr0: link becomes ready [ 72.963244][ T4876] 8021q: adding VLAN 0 to HW filter on device batadv0 [ 72.970594][ T580] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan1: link becomes ready [ 72.972000][ T580] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan0: link becomes ready [ 72.975865][ T148] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_virt_wifi: link becomes ready [ 72.977583][ T148] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_virt_wifi: link becomes ready [ 72.985964][ T580] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_vlan: link becomes ready [ 72.987565][ T580] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_vlan: link becomes ready [ 72.991915][ T4876] device veth0_vlan entered promiscuous mode [ 72.996110][ T4876] device veth1_vlan entered promiscuous mode [ 72.999954][ T580] IPv6: ADDRCONF(NETDEV_CHANGE): vlan0: link becomes ready [ 73.001555][ T580] IPv6: ADDRCONF(NETDEV_CHANGE): vlan1: link becomes ready [ 73.003030][ T580] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan0: link becomes ready [ 73.004578][ T580] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan1: link becomes ready [ 73.014951][ T580] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_macvtap: link becomes ready [ 73.016551][ T580] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_macvtap: link becomes ready [ 73.020606][ T4876] device veth0_macvtap entered promiscuous mode [ 73.023556][ T4876] device veth1_macvtap entered promiscuous mode [ 73.031451][ T4876] batman_adv: batadv0: Interface activated: batadv_slave_0 [ 73.032885][ T580] IPv6: ADDRCONF(NETDEV_CHANGE): macvtap0: link becomes ready [ 73.034399][ T580] IPv6: ADDRCONF(NETDEV_CHANGE): macsec0: link becomes ready [ 73.035935][ T580] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_0: link becomes ready [ 73.037411][ T580] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_batadv: link becomes ready [ 73.041267][ T4876] batman_adv: batadv0: Interface activated: batadv_slave_1 [ 73.043471][ T393] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_1: link becomes ready [ 73.045097][ T393] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_batadv: link becomes ready [ 73.047262][ T4876] netdevsim netdevsim0 netdevsim0: set [1, 0] type 2 family 0 port 6081 - 0 [ 73.048602][ T4876] netdevsim netdevsim0 netdevsim1: set [1, 0] type 2 family 0 port 6081 - 0 [ 73.051312][ T4876] netdevsim netdevsim0 netdevsim2: set [1, 0] type 2 family 0 port 6081 - 0 [ 73.052624][ T4876] netdevsim netdevsim0 netdevsim3: set [1, 0] type 2 family 0 port 6081 - 0 [ 73.083407][ T393] wlan0: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 73.084688][ T393] wlan0: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 73.086021][ T580] IPv6: ADDRCONF(NETDEV_CHANGE): wlan0: link becomes ready [ 73.102563][ T393] wlan1: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 73.103811][ T393] wlan1: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 73.105201][ T148] IPv6: ADDRCONF(NETDEV_CHANGE): wlan1: link becomes ready [ 73.199354][ T25] Bluetooth: hci1: command 0x0409 tx timeout [ 73.237767][ T5007] loop0: detected capacity change from 0 to 32768 [ 73.254188][ T5007] BTRFS: device fsid ed167579-eb65-4e76-9a50-61ac97e9b59d devid 1 transid 8 /dev/loop0 scanned by syz.0.15 (5007) [ 73.271173][ T5007] BTRFS info (device loop0): using sha256 (sha256-ce) checksum algorithm [ 73.272569][ T5007] BTRFS info (device loop0): setting nodatacow, compression disabled [ 73.273814][ T5007] BTRFS info (device loop0): setting datacow [ 73.274701][ T5007] BTRFS info (device loop0): doing ref verification [ 73.275710][ T5007] BTRFS info (device loop0): force clearing of disk cache [ 73.276839][ T5007] BTRFS info (device loop0): turning off barriers [ 73.277884][ T5007] BTRFS info (device loop0): use zlib compression, level 3 [ 73.279893][ T5007] BTRFS info (device loop0): using free space tree [ 73.280954][ T5007] BTRFS info (device loop0): has skinny extents [ 73.421289][ T5007] BTRFS info (device loop0): clearing free space tree [ 73.422566][ T5007] BTRFS info (device loop0): clearing compat-ro feature flag for FREE_SPACE_TREE (0x1) [ 73.424075][ T5007] BTRFS info (device loop0): clearing compat-ro feature flag for FREE_SPACE_TREE_VALID (0x2) [ 73.442006][ T5007] BTRFS info (device loop0): creating free space tree [ 73.443962][ T5007] BTRFS info (device loop0): setting compat-ro feature flag for FREE_SPACE_TREE (0x1) [ 73.445515][ T5007] BTRFS info (device loop0): setting compat-ro feature flag for FREE_SPACE_TREE_VALID (0x2) [ 73.462505][ T5007] FAULT_INJECTION: forcing a failure. [ 73.462505][ T5007] name failslab, interval 1, probability 0, space 0, times 1 [ 73.464465][ T5007] CPU: 0 PID: 5007 Comm: syz.0.15 Not tainted syzkaller #0 [ 73.465558][ T5007] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/26/2026 [ 73.467156][ T5007] Call trace: [ 73.467725][ T5007] dump_backtrace+0x0/0x458 [ 73.468488][ T5007] show_stack+0x2c/0x3c [ 73.469137][ T5007] __dump_stack+0x30/0x40 [ 73.469810][ T5007] dump_stack_lvl+0xf4/0x15c [ 73.470565][ T5007] dump_stack+0x1c/0x5c [ 73.471210][ T5007] should_fail+0x3bc/0x514 [ 73.471928][ T5007] __should_failslab+0xbc/0x10c [ 73.472669][ T5007] should_failslab+0x10/0x28 [ 73.473402][ T5007] slab_pre_alloc_hook+0x64/0xe8 [ 73.474216][ T5007] kmem_cache_alloc+0x94/0x3d4 [ 73.475009][ T5007] btrfs_alloc_path+0x5c/0x68 [ 73.475777][ T5007] btrfs_insert_dir_item+0x184/0x3e8 [ 73.476605][ T5007] btrfs_add_link+0x2b0/0xa9c [ 73.477334][ T5007] btrfs_create+0x468/0x514 [ 73.478052][ T5007] path_openat+0xe18/0x2718 [ 73.478756][ T5007] do_filp_open+0x184/0x368 [ 73.479475][ T5007] do_sys_openat2+0x134/0x3f4 [ 73.480205][ T5007] __arm64_sys_openat+0x118/0x14c [ 73.481014][ T5007] invoke_syscall+0x98/0x2b0 [ 73.481731][ T5007] el0_svc_common+0x138/0x258 [ 73.482418][ T5007] do_el0_svc+0x58/0x13c [ 73.483110][ T5007] el0_svc+0x78/0x1d0 [ 73.483713][ T5007] el0t_64_sync_handler+0xcc/0xe4 [ 73.484496][ T5007] el0t_64_sync+0x1a0/0x1a4 [ 73.529950][ T5007] ------------[ cut here ]------------ [ 73.531004][ T5007] WARNING: CPU: 0 PID: 5007 at fs/btrfs/inode.c:6776 btrfs_add_link+0x718/0xa9c [ 73.532576][ T5007] Modules linked in: [ 73.533219][ T5007] CPU: 0 PID: 5007 Comm: syz.0.15 Not tainted syzkaller #0 [ 73.534328][ T5007] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/26/2026 [ 73.536045][ T5007] pstate: 62400005 (nZCv daif +PAN -UAO +TCO -DIT -SSBS BTYPE=--) [ 73.537291][ T5007] pc : btrfs_add_link+0x718/0xa9c [ 73.538095][ T5007] lr : btrfs_add_link+0x718/0xa9c [ 73.538904][ T5007] sp : ffff80001ff77580 [ 73.539576][ T5007] x29: ffff80001ff77680 x28: ffff0000de1990b0 x27: 0000000000000108 [ 73.540934][ T5007] x26: 00000000fffffff4 x25: 0000000000000000 x24: dfff800000000000 [ 73.542190][ T5007] x23: 0000000000000014 x22: 1fffe0001bc33221 x21: ffff700003feeeb8 [ 73.543472][ T5007] x20: 00000000fffffff4 x19: ffff0000de199108 x18: 0000000000000001 [ 73.544715][ T5007] x17: 0000000000000000 x16: ffff800011255484 x15: 00000000ffffffff [ 73.546110][ T5007] x14: 0000000000000001 x13: 1fffe000341f07ab x12: 0000000000ff0100 [ 73.547475][ T5007] x11: 0000000000000000 x10: 0000000000000000 x9 : 854af560ba720400 [ 73.548834][ T5007] x8 : 854af560ba720400 x7 : 0000000000000001 x6 : 0000000000000001 [ 73.550180][ T5007] x5 : ffff80001ff76e98 x4 : ffff80001436f3e0 x3 : ffff800008508fa8 [ 73.551535][ T5007] x2 : 0000000000000001 x1 : 0000000100000000 x0 : 0000000000000026 [ 73.552829][ T5007] Call trace: [ 73.553365][ T5007] btrfs_add_link+0x718/0xa9c [ 73.554151][ T5007] btrfs_create+0x468/0x514 [ 73.554879][ T5007] path_openat+0xe18/0x2718 [ 73.555661][ T5007] do_filp_open+0x184/0x368 [ 73.556418][ T5007] do_sys_openat2+0x134/0x3f4 [ 73.557176][ T5007] __arm64_sys_openat+0x118/0x14c [ 73.557982][ T5007] invoke_syscall+0x98/0x2b0 [ 73.558685][ T5007] el0_svc_common+0x138/0x258 [ 73.559407][ T5007] do_el0_svc+0x58/0x13c [ 73.560087][ T5007] el0_svc+0x78/0x1d0 [ 73.560737][ T5007] el0t_64_sync_handler+0xcc/0xe4 [ 73.561514][ T5007] el0t_64_sync+0x1a0/0x1a4 [ 73.562234][ T5007] irq event stamp: 85600 [ 73.562871][ T5007] hardirqs last enabled at (85599): [] __up_console_sem+0xb4/0xfc [ 73.564367][ T5007] hardirqs last disabled at (85600): [] el1_dbg+0x24/0x80 [ 73.565823][ T5007] softirqs last enabled at (85578): [] handle_softirqs+0xa40/0xbe4 [ 73.567415][ T5007] softirqs last disabled at (85561): [] __irq_exit_rcu+0x240/0x43c [ 73.568897][ T5007] ---[ end trace e33443594f9272f4 ]--- [ 73.579751][ T5007] BTRFS: error (device loop0) in btrfs_add_link:6776: errno=-12 Out of memory [ 73.581309][ T5007] BTRFS info (device loop0): forced readonly [ 73.853099][ T5071] loop0: detected capacity change from 0 to 32768 [ 73.867281][ T5071] BTRFS: device fsid ed167579-eb65-4e76-9a50-61ac97e9b59d devid 1 transid 8 /dev/loop0 scanned by syz.0.16 (5071) [ 73.877137][ T5071] BTRFS info (device loop0): using sha256 (sha256-ce) checksum algorithm [ 73.878494][ T5071] BTRFS info (device loop0): setting nodatacow, compression disabled [ 73.884441][ T5071] BTRFS info (device loop0): setting datacow [ 73.885500][ T5071] BTRFS info (device loop0): doing ref verification [ 73.886549][ T5071] BTRFS info (device loop0): force clearing of disk cache [ 73.887648][ T5071] BTRFS info (device loop0): turning off barriers [ 73.888697][ T5071] BTRFS info (device loop0): use zlib compression, level 3 [ 73.890312][ T5071] BTRFS info (device loop0): using free space tree [ 73.891295][ T5071] BTRFS info (device loop0): has skinny extents [ 73.901843][ T5071] BTRFS info (device loop0): clearing free space tree [ 73.903034][ T5071] BTRFS info (device loop0): clearing compat-ro feature flag for FREE_SPACE_TREE (0x1) [ 73.904616][ T5071] BTRFS info (device loop0): clearing compat-ro feature flag for FREE_SPACE_TREE_VALID (0x2) [ 73.908565][ T5071] BTRFS info (device loop0): creating free space tree [ 73.910624][ T5071] BTRFS info (device loop0): setting compat-ro feature flag for FREE_SPACE_TREE (0x1) [ 73.912099][ T5071] BTRFS info (device loop0): setting compat-ro feature flag for FREE_SPACE_TREE_VALID (0x2) [ 73.917028][ T5071] FAULT_INJECTION: forcing a failure. [ 73.917028][ T5071] name failslab, interval 1, probability 0, space 0, times 0 [ 73.918959][ T5071] CPU: 0 PID: 5071 Comm: syz.0.16 Tainted: G W syzkaller #0 [ 73.920302][ T5071] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/26/2026 [ 73.921916][ T5071] Call trace: [ 73.922475][ T5071] dump_backtrace+0x0/0x458 [ 73.923222][ T5071] show_stack+0x2c/0x3c [ 73.923891][ T5071] __dump_stack+0x30/0x40 [ 73.924599][ T5071] dump_stack_lvl+0xf4/0x15c [ 73.925313][ T5071] dump_stack+0x1c/0x5c [ 73.925981][ T5071] should_fail+0x3bc/0x514 [ 73.926599][ T5071] __should_failslab+0xbc/0x10c [ 73.927444][ T5071] should_failslab+0x10/0x28 [ 73.928142][ T5071] slab_pre_alloc_hook+0x64/0xe8 [ 73.928896][ T5071] kmem_cache_alloc+0x94/0x3d4 [ 73.929638][ T5071] btrfs_alloc_path+0x5c/0x68 [ 73.930407][ T5071] btrfs_insert_dir_item+0x184/0x3e8 [ 73.931274][ T5071] btrfs_add_link+0x2b0/0xa9c [ 73.931961][ T5071] btrfs_create+0x468/0x514 [ 73.932648][ T5071] path_openat+0xe18/0x2718 [ 73.933370][ T5071] do_filp_open+0x184/0x368 [ 73.934124][ T5071] do_sys_openat2+0x134/0x3f4 [ 73.934911][ T5071] __arm64_sys_openat+0x118/0x14c [ 73.935773][ T5071] invoke_syscall+0x98/0x2b0 [ 73.936497][ T5071] el0_svc_common+0x138/0x258 [ 73.937256][ T5071] do_el0_svc+0x58/0x13c [ 73.937957][ T5071] el0_svc+0x78/0x1d0 [ 73.938578][ T5071] el0t_64_sync_handler+0xcc/0xe4 [ 73.939399][ T5071] el0t_64_sync+0x1a0/0x1a4 [ 73.942935][ T5071] ------------[ cut here ]------------ [ 73.943929][ T5071] WARNING: CPU: 0 PID: 5071 at fs/btrfs/inode.c:6776 btrfs_add_link+0x718/0xa9c [ 73.945320][ T5071] Modules linked in: [ 73.945903][ T5071] CPU: 0 PID: 5071 Comm: syz.0.16 Tainted: G W syzkaller #0 [ 73.947267][ T5071] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/26/2026 [ 73.948814][ T5071] pstate: 62400005 (nZCv daif +PAN -UAO +TCO -DIT -SSBS BTYPE=--) [ 73.950061][ T5071] pc : btrfs_add_link+0x718/0xa9c [ 73.950842][ T5071] lr : btrfs_add_link+0x718/0xa9c [ 73.951774][ T5071] sp : ffff80001ff97580 [ 73.952465][ T5071] x29: ffff80001ff97680 x28: ffff0000de199370 x27: 0000000000000108 [ 73.953889][ T5071] x26: 00000000fffffff4 x25: 0000000000000000 x24: dfff800000000000 [ 73.955158][ T5071] x23: 0000000000000014 x22: 1fffe0001bc33279 x21: ffff700003ff2eb8 [ 73.956540][ T5071] x20: 00000000fffffff4 x19: ffff0000de1993c8 x18: 0000000000000001 [ 73.957814][ T5071] x17: 0000000000000000 x16: ffff800011255484 x15: 00000000ffffffff [ 73.959083][ T5071] x14: 0000000000000001 x13: 1fffe000341f07ab x12: 0000000000ff0100 [ 73.960373][ T5071] x11: 0000000000000000 x10: 0000000000000000 x9 : 15d74f386b7c3c00 [ 73.961709][ T5071] x8 : 15d74f386b7c3c00 x7 : 0000000000000001 x6 : 0000000000000001 [ 73.963022][ T5071] x5 : ffff80001ff96e98 x4 : ffff80001436f3e0 x3 : ffff800008508fa8 [ 73.964315][ T5071] x2 : 0000000000000001 x1 : 0000000100000000 x0 : 0000000000000026 [ 73.965683][ T5071] Call trace: [ 73.966243][ T5071] btrfs_add_link+0x718/0xa9c [ 73.967027][ T5071] btrfs_create+0x468/0x514 [ 73.967747][ T5071] path_openat+0xe18/0x2718 [ 73.968509][ T5071] do_filp_open+0x184/0x368 [ 73.969271][ T5071] do_sys_openat2+0x134/0x3f4 [ 73.970044][ T5071] __arm64_sys_openat+0x118/0x14c [ 73.970865][ T5071] invoke_syscall+0x98/0x2b0 [ 73.971646][ T5071] el0_svc_common+0x138/0x258 [ 73.972428][ T5071] do_el0_svc+0x58/0x13c [ 73.973194][ T5071] el0_svc+0x78/0x1d0 [ 73.973842][ T5071] el0t_64_sync_handler+0xcc/0xe4 [ 73.974646][ T5071] el0t_64_sync+0x1a0/0x1a4 [ 73.975380][ T5071] irq event stamp: 81882 [ 73.976062][ T5071] hardirqs last enabled at (81881): [] __up_console_sem+0xb4/0xfc [ 73.977568][ T5071] hardirqs last disabled at (81882): [] el1_dbg+0x24/0x80 [ 73.978965][ T5071] softirqs last enabled at (81862): [] handle_softirqs+0xa40/0xbe4 [ 73.980443][ T5071] softirqs last disabled at (81815): [] __irq_exit_rcu+0x240/0x43c [ 73.982011][ T5071] ---[ end trace e33443594f9272f5 ]--- [ 73.983770][ T5071] BTRFS: error (device loop0) in btrfs_add_link:6776: errno=-12 Out of memory [ 73.985157][ T5071] BTRFS info (device loop0): forced readonly [ 74.188057][ T5105] loop0: detected capacity change from 0 to 32768 [ 74.197058][ T5105] BTRFS: device fsid ed167579-eb65-4e76-9a50-61ac97e9b59d devid 1 transid 8 /dev/loop0 scanned by syz.0.17 (5105) [ 74.201331][ T5105] BTRFS info (device loop0): using sha256 (sha256-ce) checksum algorithm [ 74.202682][ T5105] BTRFS info (device loop0): setting nodatacow, compression disabled [ 74.203987][ T5105] BTRFS info (device loop0): setting datacow [ 74.204929][ T5105] BTRFS info (device loop0): doing ref verification [ 74.205928][ T5105] BTRFS info (device loop0): force clearing of disk cache [ 74.206995][ T5105] BTRFS info (device loop0): turning off barriers [ 74.208017][ T5105] BTRFS info (device loop0): use zlib compression, level 3 [ 74.209589][ T5105] BTRFS info (device loop0): using free space tree [ 74.210497][ T5105] BTRFS info (device loop0): has skinny extents [ 74.218387][ T5105] BTRFS info (device loop0): clearing free space tree [ 74.219601][ T5105] BTRFS info (device loop0): clearing compat-ro feature flag for FREE_SPACE_TREE (0x1) [ 74.221145][ T5105] BTRFS info (device loop0): clearing compat-ro feature flag for FREE_SPACE_TREE_VALID (0x2) [ 74.225137][ T5105] BTRFS info (device loop0): creating free space tree [ 74.226563][ T5105] BTRFS info (device loop0): setting compat-ro feature flag for FREE_SPACE_TREE (0x1) [ 74.228177][ T5105] BTRFS info (device loop0): setting compat-ro feature flag for FREE_SPACE_TREE_VALID (0x2) [ 74.233077][ T5105] FAULT_INJECTION: forcing a failure. [ 74.233077][ T5105] name failslab, interval 1, probability 0, space 0, times 0 [ 74.235109][ T5105] CPU: 0 PID: 5105 Comm: syz.0.17 Tainted: G W syzkaller #0 [ 74.236364][ T5105] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/26/2026 [ 74.237863][ T5105] Call trace: [ 74.238369][ T5105] dump_backtrace+0x0/0x458 [ 74.239044][ T5105] show_stack+0x2c/0x3c [ 74.239734][ T5105] __dump_stack+0x30/0x40 [ 74.240411][ T5105] dump_stack_lvl+0xf4/0x15c [ 74.241115][ T5105] dump_stack+0x1c/0x5c [ 74.241770][ T5105] should_fail+0x3bc/0x514 [ 74.242454][ T5105] __should_failslab+0xbc/0x10c [ 74.243291][ T5105] should_failslab+0x10/0x28 [ 74.244069][ T5105] slab_pre_alloc_hook+0x64/0xe8 [ 74.244887][ T5105] kmem_cache_alloc+0x94/0x3d4 [ 74.245677][ T5105] btrfs_get_or_create_delayed_node+0x114/0x4a8 [ 74.246718][ T5105] btrfs_delayed_update_inode+0x3c/0x1b68 [ 74.247661][ T5105] btrfs_update_inode+0x210/0x3d4 [ 74.248509][ T5105] btrfs_create+0x364/0x514 [ 74.249267][ T5105] path_openat+0xe18/0x2718 [ 74.249981][ T5105] do_filp_open+0x184/0x368 [ 74.250710][ T5105] do_sys_openat2+0x134/0x3f4 [ 74.251469][ T5105] __arm64_sys_openat+0x118/0x14c [ 74.252356][ T5105] invoke_syscall+0x98/0x2b0 [ 74.253078][ T5105] el0_svc_common+0x138/0x258 [ 74.253829][ T5105] do_el0_svc+0x58/0x13c [ 74.254504][ T5105] el0_svc+0x78/0x1d0 [ 74.255157][ T5105] el0t_64_sync_handler+0xcc/0xe4 [ 74.255931][ T5105] el0t_64_sync+0x1a0/0x1a4 [ 74.420750][ T5127] loop0: detected capacity change from 0 to 32768 [ 74.451213][ T5127] BTRFS: device fsid ed167579-eb65-4e76-9a50-61ac97e9b59d devid 1 transid 8 /dev/loop0 scanned by syz.0.18 (5127) [ 74.454786][ T5127] BTRFS info (device loop0): using sha256 (sha256-ce) checksum algorithm [ 74.456226][ T5127] BTRFS info (device loop0): setting nodatacow, compression disabled [ 74.457613][ T5127] BTRFS info (device loop0): setting datacow [ 74.458565][ T5127] BTRFS info (device loop0): doing ref verification [ 74.460157][ T5127] BTRFS info (device loop0): force clearing of disk cache [ 74.461313][ T5127] BTRFS info (device loop0): turning off barriers [ 74.462394][ T5127] BTRFS info (device loop0): use zlib compression, level 3 [ 74.463513][ T5127] BTRFS info (device loop0): using free space tree [ 74.464558][ T5127] BTRFS info (device loop0): has skinny extents [ 74.476421][ T5127] BTRFS info (device loop0): clearing free space tree [ 74.477544][ T5127] BTRFS info (device loop0): clearing compat-ro feature flag for FREE_SPACE_TREE (0x1) [ 74.481302][ T5127] BTRFS info (device loop0): clearing compat-ro feature flag for FREE_SPACE_TREE_VALID (0x2) [ 74.484951][ T5127] BTRFS info (device loop0): creating free space tree [ 74.486446][ T5127] BTRFS info (device loop0): setting compat-ro feature flag for FREE_SPACE_TREE (0x1) [ 74.487969][ T5127] BTRFS info (device loop0): setting compat-ro feature flag for FREE_SPACE_TREE_VALID (0x2) [ 74.494087][ T5127] FAULT_INJECTION: forcing a failure. [ 74.494087][ T5127] name failslab, interval 1, probability 0, space 0, times 0 [ 74.496299][ T5127] CPU: 1 PID: 5127 Comm: syz.0.18 Tainted: G W syzkaller #0 [ 74.497652][ T5127] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/26/2026 [ 74.499252][ T5127] Call trace: [ 74.499754][ T5127] dump_backtrace+0x0/0x458 [ 74.500489][ T5127] show_stack+0x2c/0x3c [ 74.501182][ T5127] __dump_stack+0x30/0x40 [ 74.501958][ T5127] dump_stack_lvl+0xf4/0x15c [ 74.502689][ T5127] dump_stack+0x1c/0x5c [ 74.503384][ T5127] should_fail+0x3bc/0x514 [ 74.504070][ T5127] __should_failslab+0xbc/0x10c [ 74.504841][ T5127] should_failslab+0x10/0x28 [ 74.505589][ T5127] slab_pre_alloc_hook+0x64/0xe8 [ 74.506354][ T5127] kmem_cache_alloc+0x94/0x3d4 [ 74.507086][ T5127] btrfs_alloc_path+0x5c/0x68 [ 74.507786][ T5127] btrfs_insert_dir_item+0x184/0x3e8 [ 74.508495][ T5127] btrfs_add_link+0x2b0/0xa9c [ 74.509285][ T5127] btrfs_create+0x468/0x514 [ 74.510028][ T5127] path_openat+0xe18/0x2718 [ 74.510785][ T5127] do_filp_open+0x184/0x368 [ 74.511497][ T5127] do_sys_openat2+0x134/0x3f4 [ 74.512326][ T5127] __arm64_sys_openat+0x118/0x14c [ 74.513100][ T5127] invoke_syscall+0x98/0x2b0 [ 74.513835][ T5127] el0_svc_common+0x138/0x258 [ 74.514555][ T5127] do_el0_svc+0x58/0x13c [ 74.515219][ T5127] el0_svc+0x78/0x1d0 [ 74.515838][ T5127] el0t_64_sync_handler+0xcc/0xe4 [ 74.516593][ T5127] el0t_64_sync+0x1a0/0x1a4 [ 74.520022][ T5127] ------------[ cut here ]------------ [ 74.521000][ T5127] WARNING: CPU: 1 PID: 5127 at fs/btrfs/inode.c:6776 btrfs_add_link+0x718/0xa9c [ 74.522352][ T5127] Modules linked in: [ 74.522929][ T5127] CPU: 1 PID: 5127 Comm: syz.0.18 Tainted: G W syzkaller #0 [ 74.524246][ T5127] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/26/2026 [ 74.525842][ T5127] pstate: 62400005 (nZCv daif +PAN -UAO +TCO -DIT -SSBS BTYPE=--) [ 74.527160][ T5127] pc : btrfs_add_link+0x718/0xa9c [ 74.527966][ T5127] lr : btrfs_add_link+0x718/0xa9c [ 74.528781][ T5127] sp : ffff8000201d7580 [ 74.529421][ T5127] x29: ffff8000201d7680 x28: ffff0000de33e4d0 x27: 0000000000000108 [ 74.530721][ T5127] x26: 00000000fffffff4 x25: 0000000000000000 x24: dfff800000000000 [ 74.532018][ T5127] x23: 0000000000000014 x22: 1fffe0001bc67ca5 x21: ffff70000403aeb8 [ 74.533350][ T5127] x20: 00000000fffffff4 x19: ffff0000de33e528 x18: 0000000000000001 [ 74.534650][ T5127] x17: 0000000000000000 x16: ffff800011255484 x15: 00000000ffffffff [ 74.535982][ T5127] x14: 0000000000000001 x13: 1fffe000341f49ab x12: 0000000000ff0100 [ 74.537292][ T5127] x11: 0000000000000000 x10: 0000000000000000 x9 : 4417f20931c9f500 [ 74.538601][ T5127] x8 : 4417f20931c9f500 x7 : 0000000000000001 x6 : 0000000000000001 [ 74.540009][ T5127] x5 : ffff8000201d6e98 x4 : ffff80001436f3e0 x3 : ffff800008508fa8 [ 74.541410][ T5127] x2 : 0000000000000001 x1 : 0000000100000000 x0 : 0000000000000026 [ 74.542804][ T5127] Call trace: [ 74.543346][ T5127] btrfs_add_link+0x718/0xa9c [ 74.544133][ T5127] btrfs_create+0x468/0x514 [ 74.544887][ T5127] path_openat+0xe18/0x2718 [ 74.545626][ T5127] do_filp_open+0x184/0x368 [ 74.546391][ T5127] do_sys_openat2+0x134/0x3f4 [ 74.547158][ T5127] __arm64_sys_openat+0x118/0x14c [ 74.547908][ T5127] invoke_syscall+0x98/0x2b0 [ 74.548613][ T5127] el0_svc_common+0x138/0x258 [ 74.549375][ T5127] do_el0_svc+0x58/0x13c [ 74.550056][ T5127] el0_svc+0x78/0x1d0 [ 74.550668][ T5127] el0t_64_sync_handler+0xcc/0xe4 [ 74.551409][ T5127] el0t_64_sync+0x1a0/0x1a4 [ 74.552101][ T5127] irq event stamp: 81892 [ 74.552755][ T5127] hardirqs last enabled at (81891): [] __up_console_sem+0xb4/0xfc [ 74.554265][ T5127] hardirqs last disabled at (81892): [] el1_dbg+0x24/0x80 [ 74.555743][ T5127] softirqs last enabled at (81872): [] handle_softirqs+0xa40/0xbe4 [ 74.557296][ T5127] softirqs last disabled at (81787): [] __irq_exit_rcu+0x240/0x43c [ 74.558847][ T5127] ---[ end trace e33443594f9272f6 ]--- [ 74.563290][ T5127] BTRFS: error (device loop0) in btrfs_add_link:6776: errno=-12 Out of memory [ 74.564755][ T5127] BTRFS info (device loop0): forced readonly [ 74.619692][ T4815] BTRFS: device fsid ed167579-eb65-4e76-9a50-61ac97e9b59d devid 1 transid 10 /dev/loop0 scanned by udevd (4815) [ 74.713065][ T5150] loop0: detected capacity change from 0 to 32768 [ 74.791569][ T5150] BTRFS info (device loop0): using sha256 (sha256-ce) checksum algorithm [ 74.792977][ T5150] BTRFS info (device loop0): setting nodatacow, compression disabled [ 74.794184][ T5150] BTRFS info (device loop0): setting datacow [ 74.795071][ T5150] BTRFS info (device loop0): doing ref verification [ 74.796110][ T5150] BTRFS info (device loop0): force clearing of disk cache [ 74.797212][ T5150] BTRFS info (device loop0): turning off barriers [ 74.798198][ T5150] BTRFS info (device loop0): use zlib compression, level 3 [ 74.800212][ T5150] BTRFS info (device loop0): using free space tree [ 74.801264][ T5150] BTRFS info (device loop0): has skinny extents [ 74.810416][ T5150] BTRFS info (device loop0): clearing free space tree [ 74.811551][ T5150] BTRFS info (device loop0): clearing compat-ro feature flag for FREE_SPACE_TREE (0x1) [ 74.813421][ T5150] BTRFS info (device loop0): clearing compat-ro feature flag for FREE_SPACE_TREE_VALID (0x2) [ 74.816867][ T5150] BTRFS info (device loop0): creating free space tree [ 74.818262][ T5150] BTRFS info (device loop0): setting compat-ro feature flag for FREE_SPACE_TREE (0x1) [ 74.820333][ T5150] BTRFS info (device loop0): setting compat-ro feature flag for FREE_SPACE_TREE_VALID (0x2) [ 74.824736][ T5150] FAULT_INJECTION: forcing a failure. [ 74.824736][ T5150] name failslab, interval 1, probability 0, space 0, times 0 [ 74.826687][ T5150] CPU: 0 PID: 5150 Comm: syz.0.19 Tainted: G W syzkaller #0 [ 74.827985][ T5150] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/26/2026 [ 74.829608][ T5150] Call trace: [ 74.830107][ T5150] dump_backtrace+0x0/0x458 [ 74.830778][ T5150] show_stack+0x2c/0x3c [ 74.831397][ T5150] __dump_stack+0x30/0x40 [ 74.832060][ T5150] dump_stack_lvl+0xf4/0x15c [ 74.832816][ T5150] dump_stack+0x1c/0x5c [ 74.833498][ T5150] should_fail+0x3bc/0x514 [ 74.834253][ T5150] __should_failslab+0xbc/0x10c [ 74.834980][ T5150] should_failslab+0x10/0x28 [ 74.835689][ T5150] slab_pre_alloc_hook+0x64/0xe8 [ 74.836466][ T5150] __kmalloc_node+0xb8/0x508 [ 74.837199][ T5150] memcg_alloc_page_obj_cgroups+0x80/0x170 [ 74.838078][ T5150] new_slab+0x114/0x544 [ 74.838720][ T5150] ___slab_alloc+0x6b4/0xd8c [ 74.839410][ T5150] __slab_alloc+0x68/0xc0 [ 74.840066][ T5150] kmem_cache_alloc+0x2a4/0x3d4 [ 74.840755][ T5150] btrfs_alloc_inode+0x54/0x3ac [ 74.841499][ T5150] new_inode_pseudo+0x68/0x1fc [ 74.842247][ T5150] new_inode+0x38/0x174 [ 74.842892][ T5150] btrfs_new_inode+0x158/0x1564 [ 74.843673][ T5150] btrfs_create+0x24c/0x514 [ 74.844388][ T5150] path_openat+0xe18/0x2718 [ 74.845084][ T5150] do_filp_open+0x184/0x368 [ 74.845739][ T5150] do_sys_openat2+0x134/0x3f4 [ 74.846483][ T5150] __arm64_sys_openat+0x118/0x14c [ 74.847290][ T5150] invoke_syscall+0x98/0x2b0 [ 74.847988][ T5150] el0_svc_common+0x138/0x258 [ 74.848687][ T5150] do_el0_svc+0x58/0x13c [ 74.849350][ T5150] el0_svc+0x78/0x1d0 [ 74.850002][ T5150] el0t_64_sync_handler+0xcc/0xe4 [ 74.850814][ T5150] el0t_64_sync+0x1a0/0x1a4 [ 75.001393][ T5174] loop0: detected capacity change from 0 to 32768 [ 75.003776][ T5174] BTRFS: device fsid ed167579-eb65-4e76-9a50-61ac97e9b59d devid 1 transid 8 /dev/loop0 scanned by syz.0.20 (5174) [ 75.006777][ T5174] BTRFS info (device loop0): using sha256 (sha256-ce) checksum algorithm [ 75.008143][ T5174] BTRFS info (device loop0): setting nodatacow, compression disabled [ 75.010456][ T5174] BTRFS info (device loop0): setting datacow [ 75.011782][ T5174] BTRFS info (device loop0): doing ref verification [ 75.012921][ T5174] BTRFS info (device loop0): force clearing of disk cache [ 75.014125][ T5174] BTRFS info (device loop0): turning off barriers [ 75.015152][ T5174] BTRFS info (device loop0): use zlib compression, level 3 [ 75.016307][ T5174] BTRFS info (device loop0): using free space tree [ 75.017408][ T5174] BTRFS info (device loop0): has skinny extents [ 75.035698][ T5174] BTRFS info (device loop0): clearing free space tree [ 75.036886][ T5174] BTRFS info (device loop0): clearing compat-ro feature flag for FREE_SPACE_TREE (0x1) [ 75.038571][ T5174] BTRFS info (device loop0): clearing compat-ro feature flag for FREE_SPACE_TREE_VALID (0x2) [ 75.043707][ T5174] BTRFS info (device loop0): creating free space tree [ 75.045441][ T5174] BTRFS info (device loop0): setting compat-ro feature flag for FREE_SPACE_TREE (0x1) [ 75.046998][ T5174] BTRFS info (device loop0): setting compat-ro feature flag for FREE_SPACE_TREE_VALID (0x2) [ 75.052294][ T5174] FAULT_INJECTION: forcing a failure. [ 75.052294][ T5174] name failslab, interval 1, probability 0, space 0, times 0 [ 75.054424][ T5174] CPU: 1 PID: 5174 Comm: syz.0.20 Tainted: G W syzkaller #0 [ 75.055830][ T5174] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/26/2026 [ 75.057470][ T5174] Call trace: [ 75.058017][ T5174] dump_backtrace+0x0/0x458 [ 75.058873][ T5174] show_stack+0x2c/0x3c [ 75.059547][ T5174] __dump_stack+0x30/0x40 [ 75.060283][ T5174] dump_stack_lvl+0xf4/0x15c [ 75.061053][ T5174] dump_stack+0x1c/0x5c [ 75.061709][ T5174] should_fail+0x3bc/0x514 [ 75.062393][ T5174] __should_failslab+0xbc/0x10c [ 75.063187][ T5174] should_failslab+0x10/0x28 [ 75.063885][ T5174] slab_pre_alloc_hook+0x64/0xe8 [ 75.064650][ T5174] kmem_cache_alloc+0x94/0x3d4 [ 75.065366][ T5174] btrfs_alloc_path+0x5c/0x68 [ 75.066065][ T5174] btrfs_insert_dir_item+0x184/0x3e8 [ 75.066870][ T5174] btrfs_add_link+0x2b0/0xa9c [ 75.067660][ T5174] btrfs_create+0x468/0x514 [ 75.068399][ T5174] path_openat+0xe18/0x2718 [ 75.069107][ T5174] do_filp_open+0x184/0x368 [ 75.069856][ T5174] do_sys_openat2+0x134/0x3f4 [ 75.070597][ T5174] __arm64_sys_openat+0x118/0x14c [ 75.071411][ T5174] invoke_syscall+0x98/0x2b0 [ 75.072131][ T5174] el0_svc_common+0x138/0x258 [ 75.072819][ T5174] do_el0_svc+0x58/0x13c [ 75.073526][ T5174] el0_svc+0x78/0x1d0 [ 75.074142][ T5174] el0t_64_sync_handler+0xcc/0xe4 [ 75.074940][ T5174] el0t_64_sync+0x1a0/0x1a4 [ 75.077562][ T5174] ------------[ cut here ]------------ [ 75.078488][ T5174] WARNING: CPU: 1 PID: 5174 at fs/btrfs/inode.c:6776 btrfs_add_link+0x718/0xa9c [ 75.079931][ T5174] Modules linked in: [ 75.080608][ T5174] CPU: 1 PID: 5174 Comm: syz.0.20 Tainted: G W syzkaller #0 [ 75.081992][ T5174] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/26/2026 [ 75.083657][ T5174] pstate: 62400005 (nZCv daif +PAN -UAO +TCO -DIT -SSBS BTYPE=--) [ 75.084863][ T5174] pc : btrfs_add_link+0x718/0xa9c [ 75.085661][ T5174] lr : btrfs_add_link+0x718/0xa9c [ 75.086512][ T5174] sp : ffff8000201d7580 [ 75.087162][ T5174] x29: ffff8000201d7680 x28: ffff0000de33e790 x27: 0000000000000108 [ 75.088387][ T5174] x26: 00000000fffffff4 x25: 0000000000000000 x24: dfff800000000000 [ 75.089642][ T5174] x23: 0000000000000014 x22: 1fffe0001bc67cfd x21: ffff70000403aeb8 [ 75.090882][ T5174] x20: 00000000fffffff4 x19: ffff0000de33e7e8 x18: 0000000000000001 [ 75.092283][ T5174] x17: 0000000000000000 x16: ffff800011255484 x15: 00000000ffffffff [ 75.093662][ T5174] x14: 0000000000000001 x13: 1fffe000341f49ab x12: 0000000000ff0100 [ 75.094937][ T5174] x11: 0000000000000000 x10: 0000000000000000 x9 : 9653ecd2de5b9500 [ 75.096183][ T5174] x8 : 9653ecd2de5b9500 x7 : 0000000000000001 x6 : 0000000000000001 [ 75.097523][ T5174] x5 : ffff8000201d6e98 x4 : ffff80001436f3e0 x3 : ffff800008508fa8 [ 75.098902][ T5174] x2 : 0000000000000001 x1 : 0000000100000000 x0 : 0000000000000026 [ 75.100205][ T5174] Call trace: [ 75.100726][ T5174] btrfs_add_link+0x718/0xa9c [ 75.101454][ T5174] btrfs_create+0x468/0x514 [ 75.102133][ T5174] path_openat+0xe18/0x2718 [ 75.102850][ T5174] do_filp_open+0x184/0x368 [ 75.103553][ T5174] do_sys_openat2+0x134/0x3f4 [ 75.104282][ T5174] __arm64_sys_openat+0x118/0x14c [ 75.105093][ T5174] invoke_syscall+0x98/0x2b0 [ 75.105799][ T5174] el0_svc_common+0x138/0x258 [ 75.106506][ T5174] do_el0_svc+0x58/0x13c [ 75.107156][ T5174] el0_svc+0x78/0x1d0 [ 75.107724][ T5174] el0t_64_sync_handler+0xcc/0xe4 [ 75.108591][ T5174] el0t_64_sync+0x1a0/0x1a4 [ 75.109319][ T5174] irq event stamp: 82718 [ 75.110058][ T5174] hardirqs last enabled at (82717): [] __up_console_sem+0xb4/0xfc [ 75.111588][ T5174] hardirqs last disabled at (82718): [] el1_dbg+0x24/0x80 [ 75.113021][ T5174] softirqs last enabled at (82698): [] handle_softirqs+0xa40/0xbe4 [ 75.114693][ T5174] softirqs last disabled at (82595): [] __irq_exit_rcu+0x240/0x43c [ 75.116293][ T5174] ---[ end trace e33443594f9272f7 ]--- [ 75.119577][ T5174] BTRFS: error (device loop0) in btrfs_add_link:6776: errno=-12 Out of memory [ 75.121124][ T5174] BTRFS info (device loop0): forced readonly [ 75.258523][ T5196] loop0: detected capacity change from 0 to 32768 [ 75.279409][ T5101] Bluetooth: hci1: command 0x041b tx timeout [ 75.290533][ T5196] BTRFS: device fsid ed167579-eb65-4e76-9a50-61ac97e9b59d devid 1 transid 8 /dev/loop0 scanned by syz.0.21 (5196) [ 75.332015][ T5196] BTRFS info (device loop0): using sha256 (sha256-ce) checksum algorithm [ 75.333473][ T5196] BTRFS info (device loop0): setting nodatacow, compression disabled [ 75.334798][ T5196] BTRFS info (device loop0): setting datacow [ 75.335838][ T5196] BTRFS info (device loop0): doing ref verification [ 75.337007][ T5196] BTRFS info (device loop0): force clearing of disk cache [ 75.338216][ T5196] BTRFS info (device loop0): turning off barriers [ 75.353230][ T5196] FAULT_INJECTION: forcing a failure. [ 75.353230][ T5196] name failslab, interval 1, probability 0, space 0, times 0 [ 75.355303][ T5196] CPU: 0 PID: 5196 Comm: syz.0.21 Tainted: G W syzkaller #0 [ 75.356718][ T5196] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/26/2026 [ 75.358450][ T5196] Call trace: [ 75.358984][ T5196] dump_backtrace+0x0/0x458 [ 75.359761][ T5196] show_stack+0x2c/0x3c [ 75.360434][ T5196] __dump_stack+0x30/0x40 [ 75.361252][ T5196] dump_stack_lvl+0xf4/0x15c [ 75.361952][ T5196] dump_stack+0x1c/0x5c [ 75.362626][ T5196] should_fail+0x3bc/0x514 [ 75.363291][ T5196] __should_failslab+0xbc/0x10c [ 75.364071][ T5196] should_failslab+0x10/0x28 [ 75.364783][ T5196] slab_pre_alloc_hook+0x64/0xe8 [ 75.365572][ T5196] kmem_cache_alloc+0x94/0x3d4 [ 75.366304][ T5196] btrfs_alloc_path+0x5c/0x68 [ 75.366966][ T5196] btrfs_insert_dir_item+0x184/0x3e8 [ 75.367791][ T5196] btrfs_add_link+0x2b0/0xa9c [ 75.368585][ T5196] btrfs_create+0x468/0x514 [ 75.369285][ T5196] path_openat+0xe18/0x2718 [ 75.369988][ T5196] do_filp_open+0x184/0x368 [ 75.370658][ T5196] do_sys_openat2+0x134/0x3f4 [ 75.371383][ T5196] __arm64_sys_openat+0x118/0x14c [ 75.372150][ T5196] invoke_syscall+0x98/0x2b0 [ 75.372848][ T5196] el0_svc_common+0x138/0x258 [ 75.373517][ T5196] do_el0_svc+0x58/0x13c [ 75.374150][ T5196] el0_svc+0x78/0x1d0 [ 75.374858][ T5196] el0t_64_sync_handler+0xcc/0xe4 [ 75.375668][ T5196] el0t_64_sync+0x1a0/0x1a4 [ 75.378599][ T5196] ------------[ cut here ]------------ [ 75.379743][ T5196] WARNING: CPU: 0 PID: 5196 at fs/btrfs/inode.c:6776 btrfs_add_link+0x718/0xa9c [ 75.381220][ T5196] Modules linked in: [ 75.381847][ T5196] CPU: 0 PID: 5196 Comm: syz.0.21 Tainted: G W syzkaller #0 [ 75.383157][ T5196] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/26/2026 [ 75.384756][ T5196] pstate: 62400005 (nZCv daif +PAN -UAO +TCO -DIT -SSBS BTYPE=--) [ 75.385894][ T5196] pc : btrfs_add_link+0x718/0xa9c [ 75.386651][ T5196] lr : btrfs_add_link+0x718/0xa9c [ 75.387362][ T5196] sp : ffff8000201d7580 [ 75.388002][ T5196] x29: ffff8000201d7680 x28: ffff0000de199e70 x27: 0000000000000108 [ 75.389245][ T5196] x26: 00000000fffffff4 x25: 0000000000000000 x24: dfff800000000000 [ 75.390368][ T5196] x23: 0000000000000014 x22: 1fffe0001bc333d9 x21: ffff70000403aeb8 [ 75.391575][ T5196] x20: 00000000fffffff4 x19: ffff0000de199ec8 x18: 0000000000000001 [ 75.392770][ T5196] x17: 0000000000000000 x16: ffff800011255484 x15: 00000000ffffffff [ 75.393960][ T5196] x14: 0000000000000001 x13: 1fffe000341f07ab x12: 0000000000ff0100 [ 75.395116][ T5196] x11: 0000000000000000 x10: 0000000000000000 x9 : 7fa7a9dfa144e200 [ 75.396442][ T5196] x8 : 7fa7a9dfa144e200 x7 : 0000000000000001 x6 : 0000000000000001 [ 75.397765][ T5196] x5 : ffff8000201d6e98 x4 : ffff80001436f3e0 x3 : ffff800008508fa8 [ 75.399161][ T5196] x2 : 0000000000000001 x1 : 0000000100000000 x0 : 0000000000000026 [ 75.400514][ T5196] Call trace: [ 75.401074][ T5196] btrfs_add_link+0x718/0xa9c [ 75.401851][ T5196] btrfs_create+0x468/0x514 [ 75.402581][ T5196] path_openat+0xe18/0x2718 [ 75.403313][ T5196] do_filp_open+0x184/0x368 [ 75.404012][ T5196] do_sys_openat2+0x134/0x3f4 [ 75.404744][ T5196] __arm64_sys_openat+0x118/0x14c [ 75.405628][ T5196] invoke_syscall+0x98/0x2b0 [ 75.406430][ T5196] el0_svc_common+0x138/0x258 [ 75.407211][ T5196] do_el0_svc+0x58/0x13c [ 75.407914][ T5196] el0_svc+0x78/0x1d0 [ 75.408572][ T5196] el0t_64_sync_handler+0xcc/0xe4 [ 75.409430][ T5196] el0t_64_sync+0x1a0/0x1a4 [ 75.410229][ T5196] irq event stamp: 81176 [ 75.410919][ T5196] hardirqs last enabled at (81175): [] __up_console_sem+0xb4/0xfc [ 75.412503][ T5196] hardirqs last disabled at (81176): [] el1_dbg+0x24/0x80 [ 75.413961][ T5196] softirqs last enabled at (81166): [] handle_softirqs+0xa40/0xbe4 [ 75.415521][ T5196] softirqs last disabled at (81157): [] __irq_exit_rcu+0x240/0x43c [ 75.417026][ T5196] ---[ end trace e33443594f9272f8 ]--- [ 75.418680][ T5196] BTRFS: error (device loop0) in btrfs_add_link:6776: errno=-12 Out of memory [ 75.617413][ T5217] loop0: detected capacity change from 0 to 32768 [ 75.653846][ T5217] BTRFS: device fsid ed167579-eb65-4e76-9a50-61ac97e9b59d devid 1 transid 8 /dev/loop0 scanned by syz.0.22 (5217) [ 75.672489][ T5217] FAULT_INJECTION: forcing a failure. [ 75.672489][ T5217] name failslab, interval 1, probability 0, space 0, times 0 [ 75.674583][ T5217] CPU: 1 PID: 5217 Comm: syz.0.22 Tainted: G W syzkaller #0 [ 75.675940][ T5217] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/26/2026 [ 75.677516][ T5217] Call trace: [ 75.678032][ T5217] dump_backtrace+0x0/0x458 [ 75.678793][ T5217] show_stack+0x2c/0x3c [ 75.679355][ T5217] __dump_stack+0x30/0x40 [ 75.680006][ T5217] dump_stack_lvl+0xf4/0x15c [ 75.680711][ T5217] dump_stack+0x1c/0x5c [ 75.681349][ T5217] should_fail+0x3bc/0x514 [ 75.682059][ T5217] __should_failslab+0xbc/0x10c [ 75.682809][ T5217] should_failslab+0x10/0x28 [ 75.683584][ T5217] slab_pre_alloc_hook+0x64/0xe8 [ 75.684358][ T5217] kmem_cache_alloc+0x94/0x3d4 [ 75.685106][ T5217] btrfs_alloc_path+0x5c/0x68 [ 75.685884][ T5217] btrfs_insert_dir_item+0x184/0x3e8 [ 75.686742][ T5217] btrfs_add_link+0x2b0/0xa9c [ 75.687484][ T5217] btrfs_create+0x468/0x514 [ 75.688230][ T5217] path_openat+0xe18/0x2718 [ 75.688900][ T5217] do_filp_open+0x184/0x368 [ 75.689569][ T5217] do_sys_openat2+0x134/0x3f4 [ 75.690278][ T5217] __arm64_sys_openat+0x118/0x14c [ 75.691077][ T5217] invoke_syscall+0x98/0x2b0 [ 75.691806][ T5217] el0_svc_common+0x138/0x258 [ 75.692564][ T5217] do_el0_svc+0x58/0x13c [ 75.693237][ T5217] el0_svc+0x78/0x1d0 [ 75.693905][ T5217] el0t_64_sync_handler+0xcc/0xe4 [ 75.694711][ T5217] el0t_64_sync+0x1a0/0x1a4 [ 75.698254][ T5217] ------------[ cut here ]------------ [ 75.699346][ T5217] WARNING: CPU: 1 PID: 5217 at fs/btrfs/inode.c:6776 btrfs_add_link+0x718/0xa9c [ 75.700799][ T5217] Modules linked in: [ 75.701436][ T5217] CPU: 1 PID: 5217 Comm: syz.0.22 Tainted: G W syzkaller #0 [ 75.702784][ T5217] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/26/2026 [ 75.704359][ T5217] pstate: 62400005 (nZCv daif +PAN -UAO +TCO -DIT -SSBS BTYPE=--) [ 75.705581][ T5217] pc : btrfs_add_link+0x718/0xa9c [ 75.706389][ T5217] lr : btrfs_add_link+0x718/0xa9c [ 75.707139][ T5217] sp : ffff800020777580 [ 75.707809][ T5217] x29: ffff800020777680 x28: ffff0000de33ea50 x27: 0000000000000108 [ 75.709122][ T5217] x26: 00000000fffffff4 x25: 0000000000000000 x24: dfff800000000000 [ 75.710439][ T5217] x23: 0000000000000014 x22: 1fffe0001bc67d55 x21: ffff7000040eeeb8 [ 75.711815][ T5217] x20: 00000000fffffff4 x19: ffff0000de33eaa8 x18: 0000000000000001 [ 75.713085][ T5217] x17: 0000000000000000 x16: ffff800011255484 x15: 00000000ffffffff [ 75.714418][ T5217] x14: 0000000000000001 x13: 1fffe000341f49ab x12: 0000000000ff0100 [ 75.715722][ T5217] x11: 0000000000000000 x10: 0000000000000000 x9 : 34094c468acd2900 [ 75.717000][ T5217] x8 : 34094c468acd2900 x7 : 0000000000000001 x6 : 0000000000000001 [ 75.718226][ T5217] x5 : ffff800020776e98 x4 : ffff80001436f3e0 x3 : ffff800008508fa8 [ 75.719578][ T5217] x2 : 0000000000000001 x1 : 0000000100000000 x0 : 0000000000000026 [ 75.720900][ T5217] Call trace: [ 75.721427][ T5217] btrfs_add_link+0x718/0xa9c [ 75.722153][ T5217] btrfs_create+0x468/0x514 [ 75.722898][ T5217] path_openat+0xe18/0x2718 [ 75.723594][ T5217] do_filp_open+0x184/0x368 [ 75.724332][ T5217] do_sys_openat2+0x134/0x3f4 [ 75.725055][ T5217] __arm64_sys_openat+0x118/0x14c [ 75.725831][ T5217] invoke_syscall+0x98/0x2b0 [ 75.726677][ T5217] el0_svc_common+0x138/0x258 [ 75.727460][ T5217] do_el0_svc+0x58/0x13c [ 75.728139][ T5217] el0_svc+0x78/0x1d0 [ 75.728803][ T5217] el0t_64_sync_handler+0xcc/0xe4 [ 75.729594][ T5217] el0t_64_sync+0x1a0/0x1a4 [ 75.730285][ T5217] irq event stamp: 81294 [ 75.730922][ T5217] hardirqs last enabled at (81293): [] __up_console_sem+0xb4/0xfc [ 75.732383][ T5217] hardirqs last disabled at (81294): [] el1_dbg+0x24/0x80 [ 75.733675][ T5217] softirqs last enabled at (81284): [] handle_softirqs+0xa40/0xbe4 [ 75.735300][ T5217] softirqs last disabled at (81221): [] __irq_exit_rcu+0x240/0x43c [ 75.736822][ T5217] ---[ end trace e33443594f9272f9 ]--- [ 75.739988][ T5217] BTRFS: error (device loop0) in btrfs_add_link:6776: errno=-12 Out of memory [ 75.790804][ T4815] BTRFS: device fsid ed167579-eb65-4e76-9a50-61ac97e9b59d devid 1 transid 10 /dev/loop0 scanned by udevd (4815) [ 75.881443][ T5238] loop0: detected capacity change from 0 to 32768 [ 76.024761][ T5238] FAULT_INJECTION: forcing a failure. [ 76.024761][ T5238] name failslab, interval 1, probability 0, space 0, times 0 [ 76.026822][ T5238] CPU: 0 PID: 5238 Comm: syz.0.23 Tainted: G W syzkaller #0 [ 76.028194][ T5238] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/26/2026 [ 76.029809][ T5238] Call trace: [ 76.030352][ T5238] dump_backtrace+0x0/0x458 [ 76.031060][ T5238] show_stack+0x2c/0x3c [ 76.031708][ T5238] __dump_stack+0x30/0x40 [ 76.032451][ T5238] dump_stack_lvl+0xf4/0x15c [ 76.033259][ T5238] dump_stack+0x1c/0x5c [ 76.033967][ T5238] should_fail+0x3bc/0x514 [ 76.034671][ T5238] __should_failslab+0xbc/0x10c [ 76.035474][ T5238] should_failslab+0x10/0x28 [ 76.036190][ T5238] slab_pre_alloc_hook+0x64/0xe8 [ 76.037013][ T5238] kmem_cache_alloc+0x94/0x3d4 [ 76.037832][ T5238] btrfs_get_or_create_delayed_node+0x114/0x4a8 [ 76.038924][ T5238] btrfs_delayed_update_inode+0x3c/0x1b68 [ 76.039871][ T5238] btrfs_update_inode+0x210/0x3d4 [ 76.040686][ T5238] btrfs_create+0x364/0x514 [ 76.041429][ T5238] path_openat+0xe18/0x2718 [ 76.042140][ T5238] do_filp_open+0x184/0x368 [ 76.042832][ T5238] do_sys_openat2+0x134/0x3f4 [ 76.043654][ T5238] __arm64_sys_openat+0x118/0x14c [ 76.044442][ T5238] invoke_syscall+0x98/0x2b0 [ 76.045234][ T5238] el0_svc_common+0x138/0x258 [ 76.045975][ T5238] do_el0_svc+0x58/0x13c [ 76.046687][ T5238] el0_svc+0x78/0x1d0 [ 76.047352][ T5238] el0t_64_sync_handler+0xcc/0xe4 [ 76.048179][ T5238] el0t_64_sync+0x1a0/0x1a4 [ 76.101779][ T4815] BTRFS: device fsid ed167579-eb65-4e76-9a50-61ac97e9b59d devid 1 transid 12 /dev/loop0 scanned by udevd (4815) [ 76.204010][ T5260] loop0: detected capacity change from 0 to 32768 [ 76.357624][ T5260] FAULT_INJECTION: forcing a failure. [ 76.357624][ T5260] name failslab, interval 1, probability 0, space 0, times 0 [ 76.359887][ T5260] CPU: 0 PID: 5260 Comm: syz.0.24 Tainted: G W syzkaller #0 [ 76.361200][ T5260] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/26/2026 [ 76.362842][ T5260] Call trace: [ 76.363382][ T5260] dump_backtrace+0x0/0x458 [ 76.364125][ T5260] show_stack+0x2c/0x3c [ 76.364768][ T5260] __dump_stack+0x30/0x40 [ 76.365499][ T5260] dump_stack_lvl+0xf4/0x15c [ 76.366184][ T5260] dump_stack+0x1c/0x5c [ 76.366793][ T5260] should_fail+0x3bc/0x514 [ 76.367566][ T5260] __should_failslab+0xbc/0x10c [ 76.368393][ T5260] should_failslab+0x10/0x28 [ 76.369154][ T5260] slab_pre_alloc_hook+0x64/0xe8 [ 76.369989][ T5260] kmem_cache_alloc+0x94/0x3d4 [ 76.370736][ T5260] btrfs_alloc_path+0x5c/0x68 [ 76.371530][ T5260] btrfs_insert_dir_item+0x184/0x3e8 [ 76.372373][ T5260] btrfs_add_link+0x2b0/0xa9c [ 76.373107][ T5260] btrfs_create+0x468/0x514 [ 76.373843][ T5260] path_openat+0xe18/0x2718 [ 76.374586][ T5260] do_filp_open+0x184/0x368 [ 76.375352][ T5260] do_sys_openat2+0x134/0x3f4 [ 76.376087][ T5260] __arm64_sys_openat+0x118/0x14c [ 76.376955][ T5260] invoke_syscall+0x98/0x2b0 [ 76.377725][ T5260] el0_svc_common+0x138/0x258 [ 76.378465][ T5260] do_el0_svc+0x58/0x13c [ 76.379164][ T5260] el0_svc+0x78/0x1d0 [ 76.379799][ T5260] el0t_64_sync_handler+0xcc/0xe4 [ 76.380572][ T5260] el0t_64_sync+0x1a0/0x1a4 [ 76.382070][ T5260] ------------[ cut here ]------------ [ 76.383008][ T5260] WARNING: CPU: 0 PID: 5260 at fs/btrfs/inode.c:6776 btrfs_add_link+0x718/0xa9c [ 76.384489][ T5260] Modules linked in: [ 76.385142][ T5260] CPU: 0 PID: 5260 Comm: syz.0.24 Tainted: G W syzkaller #0 [ 76.386495][ T5260] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/26/2026 [ 76.388059][ T5260] pstate: 62400005 (nZCv daif +PAN -UAO +TCO -DIT -SSBS BTYPE=--) [ 76.389335][ T5260] pc : btrfs_add_link+0x718/0xa9c [ 76.390096][ T5260] lr : btrfs_add_link+0x718/0xa9c [ 76.390914][ T5260] sp : ffff800020777580 [ 76.391605][ T5260] x29: ffff800020777680 x28: ffff0000de3756e0 x27: 0000000000000108 [ 76.392859][ T5260] x26: 00000000fffffff4 x25: 0000000000000000 x24: dfff800000000000 [ 76.394164][ T5260] x23: 0000000000000014 x22: 1fffe0001bc6eae7 x21: ffff7000040eeeb8 [ 76.395399][ T5260] x20: 00000000fffffff4 x19: ffff0000de375738 x18: 0000000000000001 [ 76.396677][ T5260] x17: 0000000000000000 x16: ffff800011255484 x15: 00000000ffffffff [ 76.398024][ T5260] x14: 0000000000000001 x13: 1fffe000341f07ab x12: 0000000000ff0100 [ 76.399396][ T5260] x11: 0000000000000000 x10: 0000000000000000 x9 : 5c11dad11b1cf800 [ 76.400759][ T5260] x8 : 5c11dad11b1cf800 x7 : 0000000000000001 x6 : 0000000000000001 [ 76.402079][ T5260] x5 : ffff800020776e98 x4 : ffff80001436f3e0 x3 : ffff800008508fa8 [ 76.403474][ T5260] x2 : 0000000000000001 x1 : 0000000100000000 x0 : 0000000000000026 [ 76.404843][ T5260] Call trace: [ 76.405381][ T5260] btrfs_add_link+0x718/0xa9c [ 76.406121][ T5260] btrfs_create+0x468/0x514 [ 76.406839][ T5260] path_openat+0xe18/0x2718 [ 76.407604][ T5260] do_filp_open+0x184/0x368 [ 76.408329][ T5260] do_sys_openat2+0x134/0x3f4 [ 76.409139][ T5260] __arm64_sys_openat+0x118/0x14c [ 76.409923][ T5260] invoke_syscall+0x98/0x2b0 [ 76.410637][ T5260] el0_svc_common+0x138/0x258 [ 76.411400][ T5260] do_el0_svc+0x58/0x13c [ 76.412071][ T5260] el0_svc+0x78/0x1d0 [ 76.412665][ T5260] el0t_64_sync_handler+0xcc/0xe4 [ 76.413500][ T5260] el0t_64_sync+0x1a0/0x1a4 [ 76.414253][ T5260] irq event stamp: 81520 [ 76.414955][ T5260] hardirqs last enabled at (81519): [] __up_console_sem+0xb4/0xfc [ 76.416484][ T5260] hardirqs last disabled at (81520): [] el1_dbg+0x24/0x80 [ 76.417902][ T5260] softirqs last enabled at (81500): [] handle_softirqs+0xa40/0xbe4 [ 76.419438][ T5260] softirqs last disabled at (81481): [] __irq_exit_rcu+0x240/0x43c [ 76.420935][ T5260] ---[ end trace e33443594f9272fa ]--- [ 76.424409][ T5260] BTRFS: error (device loop0) in btrfs_add_link:6776: errno=-12 Out of memory 1970/01/01 00:01:16 executed programs: 12 [ 76.630016][ T5283] BTRFS: device fsid ed167579-eb65-4e76-9a50-61ac97e9b59d devid 1 transid 8 /dev/loop0 scanned by syz.0.25 (5283) [ 76.686325][ T5283] FAULT_INJECTION: forcing a failure. [ 76.686325][ T5283] name failslab, interval 1, probability 0, space 0, times 0 [ 76.688464][ T5283] CPU: 1 PID: 5283 Comm: syz.0.25 Tainted: G W syzkaller #0 [ 76.689857][ T5283] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/26/2026 [ 76.691471][ T5283] Call trace: [ 76.692008][ T5283] dump_backtrace+0x0/0x458 [ 76.692760][ T5283] show_stack+0x2c/0x3c [ 76.693473][ T5283] __dump_stack+0x30/0x40 [ 76.694203][ T5283] dump_stack_lvl+0xf4/0x15c [ 76.694945][ T5283] dump_stack+0x1c/0x5c [ 76.695660][ T5283] should_fail+0x3bc/0x514 [ 76.696365][ T5283] __should_failslab+0xbc/0x10c [ 76.697127][ T5283] should_failslab+0x10/0x28 [ 76.697933][ T5283] slab_pre_alloc_hook+0x64/0xe8 [ 76.698783][ T5283] kmem_cache_alloc+0x94/0x3d4 [ 76.699578][ T5283] btrfs_alloc_path+0x5c/0x68 [ 76.700338][ T5283] btrfs_insert_dir_item+0x184/0x3e8 [ 76.701217][ T5283] btrfs_add_link+0x2b0/0xa9c [ 76.702030][ T5283] btrfs_create+0x468/0x514 [ 76.702764][ T5283] path_openat+0xe18/0x2718 [ 76.703544][ T5283] do_filp_open+0x184/0x368 [ 76.704312][ T5283] do_sys_openat2+0x134/0x3f4 [ 76.705065][ T5283] __arm64_sys_openat+0x118/0x14c [ 76.705878][ T5283] invoke_syscall+0x98/0x2b0 [ 76.706637][ T5283] el0_svc_common+0x138/0x258 [ 76.707387][ T5283] do_el0_svc+0x58/0x13c [ 76.708090][ T5283] el0_svc+0x78/0x1d0 [ 76.708722][ T5283] el0t_64_sync_handler+0xcc/0xe4 [ 76.709499][ T5283] el0t_64_sync+0x1a0/0x1a4 [ 76.711650][ T5283] ------------[ cut here ]------------ [ 76.712650][ T5283] WARNING: CPU: 1 PID: 5283 at fs/btrfs/inode.c:6776 btrfs_add_link+0x718/0xa9c [ 76.714014][ T5283] Modules linked in: [ 76.714682][ T5283] CPU: 1 PID: 5283 Comm: syz.0.25 Tainted: G W syzkaller #0 [ 76.715979][ T5283] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/26/2026 [ 76.717593][ T5283] pstate: 62400005 (nZCv daif +PAN -UAO +TCO -DIT -SSBS BTYPE=--) [ 76.718815][ T5283] pc : btrfs_add_link+0x718/0xa9c [ 76.719666][ T5283] lr : btrfs_add_link+0x718/0xa9c [ 76.720479][ T5283] sp : ffff800020777580 [ 76.721122][ T5283] x29: ffff800020777680 x28: ffff0000de33ed10 x27: 0000000000000108 [ 76.722409][ T5283] x26: 00000000fffffff4 x25: 0000000000000000 x24: dfff800000000000 [ 76.723691][ T5283] x23: 0000000000000014 x22: 1fffe0001bc67dad x21: ffff7000040eeeb8 [ 76.725034][ T5283] x20: 00000000fffffff4 x19: ffff0000de33ed68 x18: 0000000000000001 [ 76.726372][ T5283] x17: 0000000000000000 x16: ffff800011255484 x15: 00000000ffffffff [ 76.727651][ T5283] x14: 0000000000000001 x13: 1fffe000341f49ab x12: 0000000000ff0100 [ 76.728920][ T5283] x11: 0000000000000000 x10: 0000000000000000 x9 : db6b8e22e2f23900 [ 76.730303][ T5283] x8 : db6b8e22e2f23900 x7 : 0000000000000001 x6 : 0000000000000001 [ 76.731628][ T5283] x5 : ffff800020776e98 x4 : ffff80001436f3e0 x3 : ffff800008508fa8 [ 76.732982][ T5283] x2 : 0000000000000001 x1 : 0000000100000000 x0 : 0000000000000026 [ 76.734243][ T5283] Call trace: [ 76.734775][ T5283] btrfs_add_link+0x718/0xa9c [ 76.735529][ T5283] btrfs_create+0x468/0x514 [ 76.736283][ T5283] path_openat+0xe18/0x2718 [ 76.736996][ T5283] do_filp_open+0x184/0x368 [ 76.737727][ T5283] do_sys_openat2+0x134/0x3f4 [ 76.738444][ T5283] __arm64_sys_openat+0x118/0x14c [ 76.739263][ T5283] invoke_syscall+0x98/0x2b0 [ 76.739998][ T5283] el0_svc_common+0x138/0x258 [ 76.740825][ T5283] do_el0_svc+0x58/0x13c [ 76.741554][ T5283] el0_svc+0x78/0x1d0 [ 76.742180][ T5283] el0t_64_sync_handler+0xcc/0xe4 [ 76.742966][ T5283] el0t_64_sync+0x1a0/0x1a4 [ 76.743682][ T5283] irq event stamp: 81754 [ 76.744354][ T5283] hardirqs last enabled at (81753): [] __up_console_sem+0xb4/0xfc [ 76.745941][ T5283] hardirqs last disabled at (81754): [] el1_dbg+0x24/0x80 [ 76.747353][ T5283] softirqs last enabled at (81734): [] handle_softirqs+0xa40/0xbe4 [ 76.748908][ T5283] softirqs last disabled at (81635): [] __irq_exit_rcu+0x240/0x43c [ 76.750480][ T5283] ---[ end trace e33443594f9272fb ]--- [ 76.752431][ T5283] BTRFS: error (device loop0) in btrfs_add_link:6776: errno=-12 Out of memory [ 76.930427][ T5305] BTRFS: device fsid ed167579-eb65-4e76-9a50-61ac97e9b59d devid 1 transid 8 /dev/loop0 scanned by syz.0.26 (5305) [ 76.994266][ T5305] FAULT_INJECTION: forcing a failure. [ 76.994266][ T5305] name failslab, interval 1, probability 0, space 0, times 0 [ 76.996252][ T5305] CPU: 1 PID: 5305 Comm: syz.0.26 Tainted: G W syzkaller #0 [ 76.997705][ T5305] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/26/2026 [ 76.999400][ T5305] Call trace: [ 76.999978][ T5305] dump_backtrace+0x0/0x458 [ 77.000762][ T5305] show_stack+0x2c/0x3c [ 77.001423][ T5305] __dump_stack+0x30/0x40 [ 77.002164][ T5305] dump_stack_lvl+0xf4/0x15c [ 77.002899][ T5305] dump_stack+0x1c/0x5c [ 77.003559][ T5305] should_fail+0x3bc/0x514 [ 77.004277][ T5305] __should_failslab+0xbc/0x10c [ 77.005023][ T5305] should_failslab+0x10/0x28 [ 77.005725][ T5305] slab_pre_alloc_hook+0x64/0xe8 [ 77.006500][ T5305] kmem_cache_alloc+0x94/0x3d4 [ 77.007298][ T5305] security_inode_alloc+0x38/0x11c [ 77.008090][ T5305] inode_init_always+0x670/0xa84 [ 77.008852][ T5305] new_inode_pseudo+0x7c/0x1fc [ 77.009637][ T5305] new_inode+0x38/0x174 [ 77.010351][ T5305] btrfs_new_inode+0x158/0x1564 [ 77.011124][ T5305] btrfs_create+0x24c/0x514 [ 77.011821][ T5305] path_openat+0xe18/0x2718 [ 77.012542][ T5305] do_filp_open+0x184/0x368 [ 77.013242][ T5305] do_sys_openat2+0x134/0x3f4 [ 77.014059][ T5305] __arm64_sys_openat+0x118/0x14c [ 77.014917][ T5305] invoke_syscall+0x98/0x2b0 [ 77.015687][ T5305] el0_svc_common+0x138/0x258 [ 77.016449][ T5305] do_el0_svc+0x58/0x13c [ 77.017123][ T5305] el0_svc+0x78/0x1d0 [ 77.017758][ T5305] el0t_64_sync_handler+0xcc/0xe4 [ 77.018559][ T5305] el0t_64_sync+0x1a0/0x1a4 [ 77.241523][ T5327] BTRFS: device fsid ed167579-eb65-4e76-9a50-61ac97e9b59d devid 1 transid 8 /dev/loop0 scanned by syz.0.27 (5327) [ 77.273972][ T5327] FAULT_INJECTION: forcing a failure. [ 77.273972][ T5327] name failslab, interval 1, probability 0, space 0, times 0 [ 77.276005][ T5327] CPU: 1 PID: 5327 Comm: syz.0.27 Tainted: G W syzkaller #0 [ 77.277303][ T5327] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/26/2026 [ 77.278907][ T5327] Call trace: [ 77.279386][ T5327] dump_backtrace+0x0/0x458 [ 77.280118][ T5327] show_stack+0x2c/0x3c [ 77.280822][ T5327] __dump_stack+0x30/0x40 [ 77.281514][ T5327] dump_stack_lvl+0xf4/0x15c [ 77.282231][ T5327] dump_stack+0x1c/0x5c [ 77.282960][ T5327] should_fail+0x3bc/0x514 [ 77.283721][ T5327] __should_failslab+0xbc/0x10c [ 77.284485][ T5327] should_failslab+0x10/0x28 [ 77.285244][ T5327] slab_pre_alloc_hook+0x64/0xe8 [ 77.286047][ T5327] kmem_cache_alloc+0x94/0x3d4 [ 77.286805][ T5327] btrfs_get_or_create_delayed_node+0x114/0x4a8 [ 77.287842][ T5327] btrfs_delayed_update_inode+0x3c/0x1b68 [ 77.288765][ T5327] btrfs_update_inode+0x210/0x3d4 [ 77.289595][ T5327] btrfs_create+0x364/0x514 [ 77.290301][ T5327] path_openat+0xe18/0x2718 [ 77.291046][ T5327] do_filp_open+0x184/0x368 [ 77.291821][ T5327] do_sys_openat2+0x134/0x3f4 [ 77.292659][ T5327] __arm64_sys_openat+0x118/0x14c [ 77.293468][ T5327] invoke_syscall+0x98/0x2b0 [ 77.294220][ T5327] el0_svc_common+0x138/0x258 [ 77.294992][ T5327] do_el0_svc+0x58/0x13c [ 77.295650][ T5327] el0_svc+0x78/0x1d0 [ 77.296344][ T5327] el0t_64_sync_handler+0xcc/0xe4 [ 77.297099][ T5327] el0t_64_sync+0x1a0/0x1a4 [ 77.359211][ T5101] Bluetooth: hci1: command 0x040f tx timeout [ 77.468875][ T5349] BTRFS: device fsid ed167579-eb65-4e76-9a50-61ac97e9b59d devid 1 transid 8 /dev/loop0 scanned by syz.0.28 (5349) [ 77.485958][ T5349] FAULT_INJECTION: forcing a failure. [ 77.485958][ T5349] name failslab, interval 1, probability 0, space 0, times 0 [ 77.488098][ T5349] CPU: 0 PID: 5349 Comm: syz.0.28 Tainted: G W syzkaller #0 [ 77.489484][ T5349] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/26/2026 [ 77.491149][ T5349] Call trace: [ 77.491662][ T5349] dump_backtrace+0x0/0x458 [ 77.492389][ T5349] show_stack+0x2c/0x3c [ 77.493045][ T5349] __dump_stack+0x30/0x40 [ 77.493732][ T5349] dump_stack_lvl+0xf4/0x15c [ 77.494422][ T5349] dump_stack+0x1c/0x5c [ 77.495070][ T5349] should_fail+0x3bc/0x514 [ 77.495759][ T5349] __should_failslab+0xbc/0x10c [ 77.496574][ T5349] should_failslab+0x10/0x28 [ 77.497293][ T5349] slab_pre_alloc_hook+0x64/0xe8 [ 77.498019][ T5349] kmem_cache_alloc+0x94/0x3d4 [ 77.498790][ T5349] btrfs_get_or_create_delayed_node+0x114/0x4a8 [ 77.499765][ T5349] btrfs_delayed_update_inode+0x3c/0x1b68 [ 77.500637][ T5349] btrfs_update_inode+0x210/0x3d4 [ 77.501376][ T5349] btrfs_create+0x364/0x514 [ 77.502071][ T5349] path_openat+0xe18/0x2718 [ 77.502802][ T5349] do_filp_open+0x184/0x368 [ 77.503518][ T5349] do_sys_openat2+0x134/0x3f4 [ 77.504245][ T5349] __arm64_sys_openat+0x118/0x14c [ 77.505032][ T5349] invoke_syscall+0x98/0x2b0 [ 77.505815][ T5349] el0_svc_common+0x138/0x258 [ 77.506553][ T5349] do_el0_svc+0x58/0x13c [ 77.507257][ T5349] el0_svc+0x78/0x1d0 [ 77.507917][ T5349] el0t_64_sync_handler+0xcc/0xe4 [ 77.508766][ T5349] el0t_64_sync+0x1a0/0x1a4 [ 77.570734][ T4815] BTRFS: device fsid ed167579-eb65-4e76-9a50-61ac97e9b59d devid 1 transid 12 /dev/loop0 scanned by udevd (4815) [ 77.775744][ T5370] FAULT_INJECTION: forcing a failure. [ 77.775744][ T5370] name failslab, interval 1, probability 0, space 0, times 0 [ 77.778086][ T5370] CPU: 0 PID: 5370 Comm: syz.0.29 Tainted: G W syzkaller #0 [ 77.779495][ T5370] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/26/2026 [ 77.781185][ T5370] Call trace: [ 77.781708][ T5370] dump_backtrace+0x0/0x458 [ 77.782391][ T5370] show_stack+0x2c/0x3c [ 77.783038][ T5370] __dump_stack+0x30/0x40 [ 77.783738][ T5370] dump_stack_lvl+0xf4/0x15c [ 77.784461][ T5370] dump_stack+0x1c/0x5c [ 77.785099][ T5370] should_fail+0x3bc/0x514 [ 77.785837][ T5370] __should_failslab+0xbc/0x10c [ 77.786624][ T5370] should_failslab+0x10/0x28 [ 77.787332][ T5370] slab_pre_alloc_hook+0x64/0xe8 [ 77.788096][ T5370] kmem_cache_alloc+0x94/0x3d4 [ 77.788896][ T5370] btrfs_get_or_create_delayed_node+0x114/0x4a8 [ 77.789855][ T5370] btrfs_delayed_update_inode+0x3c/0x1b68 [ 77.790730][ T5370] btrfs_update_inode+0x210/0x3d4 [ 77.791503][ T5370] btrfs_create+0x364/0x514 [ 77.792208][ T5370] path_openat+0xe18/0x2718 [ 77.792885][ T5370] do_filp_open+0x184/0x368 [ 77.793560][ T5370] do_sys_openat2+0x134/0x3f4 [ 77.794299][ T5370] __arm64_sys_openat+0x118/0x14c [ 77.795144][ T5370] invoke_syscall+0x98/0x2b0 [ 77.795889][ T5370] el0_svc_common+0x138/0x258 [ 77.796697][ T5370] do_el0_svc+0x58/0x13c [ 77.797347][ T5370] el0_svc+0x78/0x1d0 [ 77.797974][ T5370] el0t_64_sync_handler+0xcc/0xe4 [ 77.798869][ T5370] el0t_64_sync+0x1a0/0x1a4 [ 77.847499][ T4815] BTRFS: device fsid ed167579-eb65-4e76-9a50-61ac97e9b59d devid 1 transid 12 /dev/loop0 scanned by udevd (4815) [ 77.986624][ T5393] FAULT_INJECTION: forcing a failure. [ 77.986624][ T5393] name failslab, interval 1, probability 0, space 0, times 0 [ 77.988775][ T5393] CPU: 1 PID: 5393 Comm: syz.0.30 Tainted: G W syzkaller #0 [ 77.990120][ T5393] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/26/2026 [ 77.991797][ T5393] Call trace: [ 77.992352][ T5393] dump_backtrace+0x0/0x458 [ 77.993066][ T5393] show_stack+0x2c/0x3c [ 77.993761][ T5393] __dump_stack+0x30/0x40 [ 77.994528][ T5393] dump_stack_lvl+0xf4/0x15c [ 77.995363][ T5393] dump_stack+0x1c/0x5c [ 77.996062][ T5393] should_fail+0x3bc/0x514 [ 77.996775][ T5393] __should_failslab+0xbc/0x10c [ 77.997589][ T5393] should_failslab+0x10/0x28 [ 77.998348][ T5393] slab_pre_alloc_hook+0x64/0xe8 [ 77.999173][ T5393] kmem_cache_alloc+0x94/0x3d4 [ 77.999950][ T5393] btrfs_alloc_path+0x5c/0x68 [ 78.000689][ T5393] btrfs_insert_dir_item+0x184/0x3e8 [ 78.001600][ T5393] btrfs_add_link+0x2b0/0xa9c [ 78.002361][ T5393] btrfs_create+0x468/0x514 [ 78.003103][ T5393] path_openat+0xe18/0x2718 [ 78.003810][ T5393] do_filp_open+0x184/0x368 [ 78.004549][ T5393] do_sys_openat2+0x134/0x3f4 [ 78.005363][ T5393] __arm64_sys_openat+0x118/0x14c [ 78.006168][ T5393] invoke_syscall+0x98/0x2b0 [ 78.006893][ T5393] el0_svc_common+0x138/0x258 [ 78.007645][ T5393] do_el0_svc+0x58/0x13c [ 78.008318][ T5393] el0_svc+0x78/0x1d0 [ 78.008963][ T5393] el0t_64_sync_handler+0xcc/0xe4 [ 78.009751][ T5393] el0t_64_sync+0x1a0/0x1a4 [ 78.012507][ T5393] ------------[ cut here ]------------ [ 78.013573][ T5393] WARNING: CPU: 1 PID: 5393 at fs/btrfs/inode.c:6776 btrfs_add_link+0x718/0xa9c [ 78.015026][ T5393] Modules linked in: [ 78.015628][ T5393] CPU: 1 PID: 5393 Comm: syz.0.30 Tainted: G W syzkaller #0 [ 78.017035][ T5393] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/26/2026 [ 78.018766][ T5393] pstate: 62400005 (nZCv daif +PAN -UAO +TCO -DIT -SSBS BTYPE=--) [ 78.020071][ T5393] pc : btrfs_add_link+0x718/0xa9c [ 78.020911][ T5393] lr : btrfs_add_link+0x718/0xa9c [ 78.021734][ T5393] sp : ffff800020bb7580 [ 78.022415][ T5393] x29: ffff800020bb7680 x28: ffff0000de397a50 x27: 0000000000000108 [ 78.023789][ T5393] x26: 00000000fffffff4 x25: 0000000000000000 x24: dfff800000000000 [ 78.025106][ T5393] x23: 0000000000000014 x22: 1fffe0001bc72f55 x21: ffff700004176eb8 [ 78.026406][ T5393] x20: 00000000fffffff4 x19: ffff0000de397aa8 x18: 0000000000000001 [ 78.027703][ T5393] x17: 0000000000000000 x16: ffff800011255484 x15: 00000000ffffffff [ 78.028988][ T5393] x14: 0000000000000001 x13: 1fffe000341f49ab x12: 0000000000ff0100 [ 78.030284][ T5393] x11: 0000000000000000 x10: 0000000000000000 x9 : ac000e191f1fed00 [ 78.031600][ T5393] x8 : ac000e191f1fed00 x7 : 0000000000000001 x6 : 0000000000000001 [ 78.032911][ T5393] x5 : ffff800020bb6e98 x4 : ffff80001436f3e0 x3 : ffff800008508fa8 [ 78.034196][ T5393] x2 : 0000000000000001 x1 : 0000000100000000 x0 : 0000000000000026 [ 78.035513][ T5393] Call trace: [ 78.036033][ T5393] btrfs_add_link+0x718/0xa9c [ 78.036770][ T5393] btrfs_create+0x468/0x514 [ 78.037500][ T5393] path_openat+0xe18/0x2718 [ 78.038249][ T5393] do_filp_open+0x184/0x368 [ 78.038958][ T5393] do_sys_openat2+0x134/0x3f4 [ 78.039746][ T5393] __arm64_sys_openat+0x118/0x14c [ 78.040539][ T5393] invoke_syscall+0x98/0x2b0 [ 78.041277][ T5393] el0_svc_common+0x138/0x258 [ 78.042019][ T5393] do_el0_svc+0x58/0x13c [ 78.042728][ T5393] el0_svc+0x78/0x1d0 [ 78.043374][ T5393] el0t_64_sync_handler+0xcc/0xe4 [ 78.044151][ T5393] el0t_64_sync+0x1a0/0x1a4 [ 78.044902][ T5393] irq event stamp: 82198 [ 78.045624][ T5393] hardirqs last enabled at (82197): [] __up_console_sem+0xb4/0xfc [ 78.047208][ T5393] hardirqs last disabled at (82198): [] el1_dbg+0x24/0x80 [ 78.048624][ T5393] softirqs last enabled at (82178): [] handle_softirqs+0xa40/0xbe4 [ 78.050161][ T5393] softirqs last disabled at (82003): [] __irq_exit_rcu+0x240/0x43c [ 78.051702][ T5393] ---[ end trace e33443594f9272fc ]--- [ 78.053754][ T5393] BTRFS: error (device loop0) in btrfs_add_link:6776: errno=-12 Out of memory [ 78.223669][ T5415] BTRFS: device fsid ed167579-eb65-4e76-9a50-61ac97e9b59d devid 1 transid 8 /dev/loop0 scanned by syz.0.31 (5415) [ 78.242359][ T5415] FAULT_INJECTION: forcing a failure. [ 78.242359][ T5415] name failslab, interval 1, probability 0, space 0, times 0 [ 78.244731][ T5415] CPU: 0 PID: 5415 Comm: syz.0.31 Tainted: G W syzkaller #0 [ 78.246086][ T5415] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/26/2026 [ 78.247723][ T5415] Call trace: [ 78.248250][ T5415] dump_backtrace+0x0/0x458 [ 78.249016][ T5415] show_stack+0x2c/0x3c [ 78.249716][ T5415] __dump_stack+0x30/0x40 [ 78.250434][ T5415] dump_stack_lvl+0xf4/0x15c [ 78.251223][ T5415] dump_stack+0x1c/0x5c [ 78.251918][ T5415] should_fail+0x3bc/0x514 [ 78.252650][ T5415] __should_failslab+0xbc/0x10c [ 78.253437][ T5415] should_failslab+0x10/0x28 [ 78.254195][ T5415] slab_pre_alloc_hook+0x64/0xe8 [ 78.254980][ T5415] kmem_cache_alloc+0x94/0x3d4 [ 78.255734][ T5415] btrfs_alloc_path+0x5c/0x68 [ 78.256571][ T5415] btrfs_insert_dir_item+0x184/0x3e8 [ 78.257446][ T5415] btrfs_add_link+0x2b0/0xa9c [ 78.258238][ T5415] btrfs_create+0x468/0x514 [ 78.258991][ T5415] path_openat+0xe18/0x2718 [ 78.259719][ T5415] do_filp_open+0x184/0x368 [ 78.260443][ T5415] do_sys_openat2+0x134/0x3f4 [ 78.261175][ T5415] __arm64_sys_openat+0x118/0x14c [ 78.261970][ T5415] invoke_syscall+0x98/0x2b0 [ 78.262690][ T5415] el0_svc_common+0x138/0x258 [ 78.263443][ T5415] do_el0_svc+0x58/0x13c [ 78.264119][ T5415] el0_svc+0x78/0x1d0 [ 78.264762][ T5415] el0t_64_sync_handler+0xcc/0xe4 [ 78.265544][ T5415] el0t_64_sync+0x1a0/0x1a4 [ 78.267155][ T5415] ------------[ cut here ]------------ [ 78.268576][ T5415] WARNING: CPU: 0 PID: 5415 at fs/btrfs/inode.c:6776 btrfs_add_link+0x718/0xa9c [ 78.270041][ T5415] Modules linked in: [ 78.270706][ T5415] CPU: 0 PID: 5415 Comm: syz.0.31 Tainted: G W syzkaller #0 [ 78.272025][ T5415] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/26/2026 [ 78.273622][ T5415] pstate: 62400005 (nZCv daif +PAN -UAO +TCO -DIT -SSBS BTYPE=--) [ 78.274815][ T5415] pc : btrfs_add_link+0x718/0xa9c [ 78.275570][ T5415] lr : btrfs_add_link+0x718/0xa9c [ 78.276477][ T5415] sp : ffff800021577580 [ 78.277128][ T5415] x29: ffff800021577680 x28: ffff0000de33e370 x27: 0000000000000108 [ 78.278450][ T5415] x26: 00000000fffffff4 x25: 0000000000000000 x24: dfff800000000000 [ 78.279761][ T5415] x23: 0000000000000014 x22: 1fffe0001bc67c79 x21: ffff7000042aeeb8 [ 78.281028][ T5415] x20: 00000000fffffff4 x19: ffff0000de33e3c8 x18: 0000000000000001 [ 78.282250][ T5415] x17: 0000000000000000 x16: ffff800011255484 x15: 00000000ffffffff [ 78.283501][ T5415] x14: 0000000000000001 x13: 1fffe000341f07ab x12: 0000000000ff0100 [ 78.284782][ T5415] x11: 0000000000000000 x10: 0000000000000000 x9 : 39bcfac365ec9600 [ 78.285998][ T5415] x8 : 39bcfac365ec9600 x7 : 0000000000000001 x6 : 0000000000000001 [ 78.287287][ T5415] x5 : ffff800021576e98 x4 : ffff80001436f3e0 x3 : ffff800008508fa8 [ 78.288537][ T5415] x2 : 0000000000000001 x1 : 0000000100000000 x0 : 0000000000000026 [ 78.289774][ T5415] Call trace: [ 78.290262][ T5415] btrfs_add_link+0x718/0xa9c [ 78.290970][ T5415] btrfs_create+0x468/0x514 [ 78.291667][ T5415] path_openat+0xe18/0x2718 [ 78.292338][ T5415] do_filp_open+0x184/0x368 [ 78.293062][ T5415] do_sys_openat2+0x134/0x3f4 [ 78.293807][ T5415] __arm64_sys_openat+0x118/0x14c [ 78.294568][ T5415] invoke_syscall+0x98/0x2b0 [ 78.295294][ T5415] el0_svc_common+0x138/0x258 [ 78.296031][ T5415] do_el0_svc+0x58/0x13c [ 78.296627][ T5415] el0_svc+0x78/0x1d0 [ 78.297208][ T5415] el0t_64_sync_handler+0xcc/0xe4 [ 78.297985][ T5415] el0t_64_sync+0x1a0/0x1a4 [ 78.298607][ T5415] irq event stamp: 81968 [ 78.299275][ T5415] hardirqs last enabled at (81967): [] __up_console_sem+0xb4/0xfc [ 78.300678][ T5415] hardirqs last disabled at (81968): [] el1_dbg+0x24/0x80 [ 78.301969][ T5415] softirqs last enabled at (81942): [] handle_softirqs+0xa40/0xbe4 [ 78.303413][ T5415] softirqs last disabled at (81833): [] __irq_exit_rcu+0x240/0x43c [ 78.304817][ T5415] ---[ end trace e33443594f9272fd ]--- [ 78.307334][ T5415] BTRFS: error (device loop0) in btrfs_add_link:6776: errno=-12 Out of memory [ 78.308788][ T5415] btrfs_printk: 164 callbacks suppressed [ 78.308798][ T5415] BTRFS info (device loop0): forced readonly [ 78.449368][ T5437] set_capacity_and_notify: 7 callbacks suppressed [ 78.449377][ T5437] loop0: detected capacity change from 0 to 32768 [ 78.454371][ T5437] BTRFS: device fsid ed167579-eb65-4e76-9a50-61ac97e9b59d devid 1 transid 8 /dev/loop0 scanned by syz.0.32 (5437) [ 78.460046][ T5437] BTRFS info (device loop0): using sha256 (sha256-ce) checksum algorithm [ 78.461442][ T5437] BTRFS info (device loop0): setting nodatacow, compression disabled [ 78.462803][ T5437] BTRFS info (device loop0): setting datacow [ 78.463795][ T5437] BTRFS info (device loop0): doing ref verification [ 78.464899][ T5437] BTRFS info (device loop0): force clearing of disk cache [ 78.466040][ T5437] BTRFS info (device loop0): turning off barriers [ 78.467140][ T5437] BTRFS info (device loop0): use zlib compression, level 3 [ 78.468344][ T5437] BTRFS info (device loop0): using free space tree [ 78.469838][ T5437] BTRFS info (device loop0): has skinny extents [ 78.477207][ T5437] BTRFS info (device loop0): clearing free space tree [ 78.478338][ T5437] BTRFS info (device loop0): clearing compat-ro feature flag for FREE_SPACE_TREE (0x1) [ 78.480467][ T5437] BTRFS info (device loop0): clearing compat-ro feature flag for FREE_SPACE_TREE_VALID (0x2) [ 78.483656][ T5437] BTRFS info (device loop0): creating free space tree [ 78.485073][ T5437] BTRFS info (device loop0): setting compat-ro feature flag for FREE_SPACE_TREE (0x1) [ 78.486562][ T5437] BTRFS info (device loop0): setting compat-ro feature flag for FREE_SPACE_TREE_VALID (0x2) [ 78.492308][ T5437] FAULT_INJECTION: forcing a failure. [ 78.492308][ T5437] name failslab, interval 1, probability 0, space 0, times 0 [ 78.494273][ T5437] CPU: 0 PID: 5437 Comm: syz.0.32 Tainted: G W syzkaller #0 [ 78.495660][ T5437] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/26/2026 [ 78.497266][ T5437] Call trace: [ 78.497764][ T5437] dump_backtrace+0x0/0x458 [ 78.498460][ T5437] show_stack+0x2c/0x3c [ 78.499099][ T5437] __dump_stack+0x30/0x40 [ 78.499823][ T5437] dump_stack_lvl+0xf4/0x15c [ 78.500585][ T5437] dump_stack+0x1c/0x5c [ 78.501243][ T5437] should_fail+0x3bc/0x514 [ 78.501949][ T5437] __should_failslab+0xbc/0x10c [ 78.502773][ T5437] should_failslab+0x10/0x28 [ 78.503499][ T5437] slab_pre_alloc_hook+0x64/0xe8 [ 78.504246][ T5437] kmem_cache_alloc+0x94/0x3d4 [ 78.505002][ T5437] btrfs_get_or_create_delayed_node+0x114/0x4a8 [ 78.505952][ T5437] btrfs_delayed_update_inode+0x3c/0x1b68 [ 78.506857][ T5437] btrfs_update_inode+0x210/0x3d4 [ 78.507625][ T5437] btrfs_create+0x364/0x514 [ 78.508312][ T5437] path_openat+0xe18/0x2718 [ 78.509041][ T5437] do_filp_open+0x184/0x368 [ 78.509742][ T5437] do_sys_openat2+0x134/0x3f4 [ 78.510475][ T5437] __arm64_sys_openat+0x118/0x14c [ 78.511274][ T5437] invoke_syscall+0x98/0x2b0 [ 78.512001][ T5437] el0_svc_common+0x138/0x258 [ 78.512725][ T5437] do_el0_svc+0x58/0x13c [ 78.513457][ T5437] el0_svc+0x78/0x1d0 [ 78.514116][ T5437] el0t_64_sync_handler+0xcc/0xe4 [ 78.514930][ T5437] el0t_64_sync+0x1a0/0x1a4 [ 78.661838][ T5459] loop0: detected capacity change from 0 to 32768 [ 78.700685][ T5459] BTRFS: device fsid ed167579-eb65-4e76-9a50-61ac97e9b59d devid 1 transid 8 /dev/loop0 scanned by syz.0.33 (5459) [ 78.704352][ T5459] BTRFS info (device loop0): using sha256 (sha256-ce) checksum algorithm [ 78.705658][ T5459] BTRFS info (device loop0): setting nodatacow, compression disabled [ 78.706907][ T5459] BTRFS info (device loop0): setting datacow [ 78.707883][ T5459] BTRFS info (device loop0): doing ref verification [ 78.708922][ T5459] BTRFS info (device loop0): force clearing of disk cache [ 78.711637][ T5459] BTRFS info (device loop0): turning off barriers [ 78.712636][ T5459] BTRFS info (device loop0): use zlib compression, level 3 [ 78.713775][ T5459] BTRFS info (device loop0): using free space tree [ 78.714801][ T5459] BTRFS info (device loop0): has skinny extents [ 78.723371][ T5459] BTRFS info (device loop0): clearing free space tree [ 78.724402][ T5459] BTRFS info (device loop0): clearing compat-ro feature flag for FREE_SPACE_TREE (0x1) [ 78.725903][ T5459] BTRFS info (device loop0): clearing compat-ro feature flag for FREE_SPACE_TREE_VALID (0x2) [ 78.730164][ T5459] BTRFS info (device loop0): creating free space tree [ 78.731591][ T5459] BTRFS info (device loop0): setting compat-ro feature flag for FREE_SPACE_TREE (0x1) [ 78.733195][ T5459] BTRFS info (device loop0): setting compat-ro feature flag for FREE_SPACE_TREE_VALID (0x2) [ 78.738324][ T5459] FAULT_INJECTION: forcing a failure. [ 78.738324][ T5459] name failslab, interval 1, probability 0, space 0, times 0 [ 78.740704][ T5459] CPU: 1 PID: 5459 Comm: syz.0.33 Tainted: G W syzkaller #0 [ 78.742048][ T5459] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/26/2026 [ 78.743610][ T5459] Call trace: [ 78.744156][ T5459] dump_backtrace+0x0/0x458 [ 78.744864][ T5459] show_stack+0x2c/0x3c [ 78.745580][ T5459] __dump_stack+0x30/0x40 [ 78.746291][ T5459] dump_stack_lvl+0xf4/0x15c [ 78.747092][ T5459] dump_stack+0x1c/0x5c [ 78.747796][ T5459] should_fail+0x3bc/0x514 [ 78.748516][ T5459] __should_failslab+0xbc/0x10c [ 78.749293][ T5459] should_failslab+0x10/0x28 [ 78.750008][ T5459] slab_pre_alloc_hook+0x64/0xe8 [ 78.750792][ T5459] kmem_cache_alloc+0x94/0x3d4 [ 78.751626][ T5459] btrfs_alloc_path+0x5c/0x68 [ 78.752402][ T5459] btrfs_insert_dir_item+0x184/0x3e8 [ 78.753265][ T5459] btrfs_add_link+0x2b0/0xa9c [ 78.754034][ T5459] btrfs_create+0x468/0x514 [ 78.754780][ T5459] path_openat+0xe18/0x2718 [ 78.755490][ T5459] do_filp_open+0x184/0x368 [ 78.756205][ T5459] do_sys_openat2+0x134/0x3f4 [ 78.756970][ T5459] __arm64_sys_openat+0x118/0x14c [ 78.757751][ T5459] invoke_syscall+0x98/0x2b0 [ 78.758473][ T5459] el0_svc_common+0x138/0x258 [ 78.759183][ T5459] do_el0_svc+0x58/0x13c [ 78.759834][ T5459] el0_svc+0x78/0x1d0 [ 78.760533][ T5459] el0t_64_sync_handler+0xcc/0xe4 [ 78.761355][ T5459] el0t_64_sync+0x1a0/0x1a4 [ 78.762944][ T5459] ------------[ cut here ]------------ [ 78.764309][ T5459] WARNING: CPU: 1 PID: 5459 at fs/btrfs/inode.c:6776 btrfs_add_link+0x718/0xa9c [ 78.765619][ T5459] Modules linked in: [ 78.766212][ T5459] CPU: 1 PID: 5459 Comm: syz.0.33 Tainted: G W syzkaller #0 [ 78.767662][ T5459] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/26/2026 [ 78.769321][ T5459] pstate: 62400005 (nZCv daif +PAN -UAO +TCO -DIT -SSBS BTYPE=--) [ 78.770563][ T5459] pc : btrfs_add_link+0x718/0xa9c [ 78.771343][ T5459] lr : btrfs_add_link+0x718/0xa9c [ 78.772126][ T5459] sp : ffff800021567580 [ 78.772751][ T5459] x29: ffff800021567680 x28: ffff0000de397e70 x27: 0000000000000108 [ 78.773999][ T5459] x26: 00000000fffffff4 x25: 0000000000000000 x24: dfff800000000000 [ 78.775248][ T5459] x23: 0000000000000014 x22: 1fffe0001bc72fd9 x21: ffff7000042aceb8 [ 78.776516][ T5459] x20: 00000000fffffff4 x19: ffff0000de397ec8 x18: 0000000000000001 [ 78.777802][ T5459] x17: 0000000000000000 x16: ffff800011255484 x15: 00000000ffffffff [ 78.779160][ T5459] x14: 0000000000000001 x13: 1fffe000341f49ab x12: 0000000000ff0100 [ 78.780468][ T5459] x11: 0000000000000000 x10: 0000000000000000 x9 : 3238d93545d89400 [ 78.781765][ T5459] x8 : 3238d93545d89400 x7 : 0000000000000001 x6 : 0000000000000001 [ 78.783095][ T5459] x5 : ffff800021566e98 x4 : ffff80001436f3e0 x3 : ffff800008508fa8 [ 78.784441][ T5459] x2 : 0000000000000001 x1 : 0000000100000000 x0 : 0000000000000026 [ 78.785709][ T5459] Call trace: [ 78.786253][ T5459] btrfs_add_link+0x718/0xa9c [ 78.787057][ T5459] btrfs_create+0x468/0x514 [ 78.787842][ T5459] path_openat+0xe18/0x2718 [ 78.788573][ T5459] do_filp_open+0x184/0x368 [ 78.789350][ T5459] do_sys_openat2+0x134/0x3f4 [ 78.790092][ T5459] __arm64_sys_openat+0x118/0x14c [ 78.790905][ T5459] invoke_syscall+0x98/0x2b0 [ 78.791618][ T5459] el0_svc_common+0x138/0x258 [ 78.792374][ T5459] do_el0_svc+0x58/0x13c [ 78.793065][ T5459] el0_svc+0x78/0x1d0 [ 78.793711][ T5459] el0t_64_sync_handler+0xcc/0xe4 [ 78.794599][ T5459] el0t_64_sync+0x1a0/0x1a4 [ 78.795372][ T5459] irq event stamp: 82368 [ 78.796072][ T5459] hardirqs last enabled at (82367): [] __up_console_sem+0xb4/0xfc [ 78.797643][ T5459] hardirqs last disabled at (82368): [] el1_dbg+0x24/0x80 [ 78.799046][ T5459] softirqs last enabled at (82344): [] handle_softirqs+0xa40/0xbe4 [ 78.800570][ T5459] softirqs last disabled at (82255): [] __irq_exit_rcu+0x240/0x43c [ 78.802083][ T5459] ---[ end trace e33443594f9272fe ]--- [ 78.803930][ T5459] BTRFS: error (device loop0) in btrfs_add_link:6776: errno=-12 Out of memory [ 78.805359][ T5459] BTRFS info (device loop0): forced readonly [ 78.862623][ T4815] BTRFS: device fsid ed167579-eb65-4e76-9a50-61ac97e9b59d devid 1 transid 10 /dev/loop0 scanned by udevd (4815) [ 78.953647][ T5481] loop0: detected capacity change from 0 to 32768 [ 79.013077][ T5481] BTRFS info (device loop0): using sha256 (sha256-ce) checksum algorithm [ 79.014426][ T5481] BTRFS info (device loop0): setting nodatacow, compression disabled [ 79.015646][ T5481] BTRFS info (device loop0): setting datacow [ 79.016575][ T5481] BTRFS info (device loop0): doing ref verification [ 79.017717][ T5481] BTRFS info (device loop0): force clearing of disk cache [ 79.018859][ T5481] BTRFS info (device loop0): turning off barriers [ 79.020287][ T5481] BTRFS info (device loop0): use zlib compression, level 3 [ 79.021459][ T5481] BTRFS info (device loop0): using free space tree [ 79.022455][ T5481] BTRFS info (device loop0): has skinny extents [ 79.031788][ T5481] BTRFS info (device loop0): clearing free space tree [ 79.032978][ T5481] BTRFS info (device loop0): clearing compat-ro feature flag for FREE_SPACE_TREE (0x1) [ 79.034465][ T5481] BTRFS info (device loop0): clearing compat-ro feature flag for FREE_SPACE_TREE_VALID (0x2) [ 79.038013][ T5481] BTRFS info (device loop0): creating free space tree [ 79.040019][ T5481] BTRFS info (device loop0): setting compat-ro feature flag for FREE_SPACE_TREE (0x1) [ 79.041512][ T5481] BTRFS info (device loop0): setting compat-ro feature flag for FREE_SPACE_TREE_VALID (0x2) [ 79.046533][ T5481] FAULT_INJECTION: forcing a failure. [ 79.046533][ T5481] name failslab, interval 1, probability 0, space 0, times 0 [ 79.048617][ T5481] CPU: 0 PID: 5481 Comm: syz.0.34 Tainted: G W syzkaller #0 [ 79.050154][ T5481] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/26/2026 [ 79.051759][ T5481] Call trace: [ 79.052280][ T5481] dump_backtrace+0x0/0x458 [ 79.053054][ T5481] show_stack+0x2c/0x3c [ 79.053755][ T5481] __dump_stack+0x30/0x40 [ 79.054497][ T5481] dump_stack_lvl+0xf4/0x15c [ 79.055272][ T5481] dump_stack+0x1c/0x5c [ 79.055972][ T5481] should_fail+0x3bc/0x514 [ 79.056725][ T5481] __should_failslab+0xbc/0x10c [ 79.057520][ T5481] should_failslab+0x10/0x28 [ 79.058223][ T5481] slab_pre_alloc_hook+0x64/0xe8 [ 79.059117][ T5481] kmem_cache_alloc+0x94/0x3d4 [ 79.059882][ T5481] btrfs_alloc_path+0x5c/0x68 [ 79.060657][ T5481] btrfs_insert_dir_item+0x184/0x3e8 [ 79.061538][ T5481] btrfs_add_link+0x2b0/0xa9c [ 79.062275][ T5481] btrfs_create+0x468/0x514 [ 79.063002][ T5481] path_openat+0xe18/0x2718 [ 79.063726][ T5481] do_filp_open+0x184/0x368 [ 79.064449][ T5481] do_sys_openat2+0x134/0x3f4 [ 79.065174][ T5481] __arm64_sys_openat+0x118/0x14c [ 79.066027][ T5481] invoke_syscall+0x98/0x2b0 [ 79.066712][ T5481] el0_svc_common+0x138/0x258 [ 79.067463][ T5481] do_el0_svc+0x58/0x13c [ 79.068135][ T5481] el0_svc+0x78/0x1d0 [ 79.068761][ T5481] el0t_64_sync_handler+0xcc/0xe4 [ 79.069543][ T5481] el0t_64_sync+0x1a0/0x1a4 [ 79.072234][ T5481] ------------[ cut here ]------------ [ 79.073229][ T5481] WARNING: CPU: 0 PID: 5481 at fs/btrfs/inode.c:6776 btrfs_add_link+0x718/0xa9c [ 79.074607][ T5481] Modules linked in: [ 79.075214][ T5481] CPU: 0 PID: 5481 Comm: syz.0.34 Tainted: G W syzkaller #0 [ 79.076620][ T5481] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/26/2026 [ 79.078351][ T5481] pstate: 62400005 (nZCv daif +PAN -UAO +TCO -DIT -SSBS BTYPE=--) [ 79.079597][ T5481] pc : btrfs_add_link+0x718/0xa9c [ 79.080409][ T5481] lr : btrfs_add_link+0x718/0xa9c [ 79.081267][ T5481] sp : ffff800021907580 [ 79.081921][ T5481] x29: ffff800021907680 x28: ffff0000de38f580 x27: 0000000000000108 [ 79.083239][ T5481] x26: 00000000fffffff4 x25: 0000000000000000 x24: dfff800000000000 [ 79.084485][ T5481] x23: 0000000000000014 x22: 1fffe0001bc71ebb x21: ffff700004320eb8 [ 79.085781][ T5481] x20: 00000000fffffff4 x19: ffff0000de38f5d8 x18: 0000000000000001 [ 79.087145][ T5481] x17: 0000000000000000 x16: ffff800011255484 x15: 00000000ffffffff [ 79.088472][ T5481] x14: 0000000000000001 x13: 1fffe000341f07ab x12: 0000000000ff0100 [ 79.089949][ T5481] x11: 0000000000000000 x10: 0000000000000000 x9 : 015f96c326dbd700 [ 79.091305][ T5481] x8 : 015f96c326dbd700 x7 : 0000000000000001 x6 : 0000000000000001 [ 79.092657][ T5481] x5 : ffff800021906e98 x4 : ffff80001436f3e0 x3 : ffff800008508fa8 [ 79.093916][ T5481] x2 : 0000000000000001 x1 : 0000000100000000 x0 : 0000000000000026 [ 79.095258][ T5481] Call trace: [ 79.095784][ T5481] btrfs_add_link+0x718/0xa9c [ 79.096523][ T5481] btrfs_create+0x468/0x514 [ 79.097266][ T5481] path_openat+0xe18/0x2718 [ 79.097995][ T5481] do_filp_open+0x184/0x368 [ 79.098660][ T5481] do_sys_openat2+0x134/0x3f4 [ 79.099397][ T5481] __arm64_sys_openat+0x118/0x14c [ 79.100172][ T5481] invoke_syscall+0x98/0x2b0 [ 79.100879][ T5481] el0_svc_common+0x138/0x258 [ 79.101689][ T5481] do_el0_svc+0x58/0x13c [ 79.102371][ T5481] el0_svc+0x78/0x1d0 [ 79.103025][ T5481] el0t_64_sync_handler+0xcc/0xe4 [ 79.103878][ T5481] el0t_64_sync+0x1a0/0x1a4 [ 79.104568][ T5481] irq event stamp: 81886 [ 79.105261][ T5481] hardirqs last enabled at (81885): [] __up_console_sem+0xb4/0xfc [ 79.106896][ T5481] hardirqs last disabled at (81886): [] el1_dbg+0x24/0x80 [ 79.108319][ T5481] softirqs last enabled at (81866): [] handle_softirqs+0xa40/0xbe4 [ 79.109836][ T5481] softirqs last disabled at (81743): [] __irq_exit_rcu+0x240/0x43c [ 79.111415][ T5481] ---[ end trace e33443594f9272ff ]--- [ 79.114247][ T5481] BTRFS: error (device loop0) in btrfs_add_link:6776: errno=-12 Out of memory [ 79.115714][ T5481] BTRFS info (device loop0): forced readonly [ 79.165332][ T4815] BTRFS: device fsid ed167579-eb65-4e76-9a50-61ac97e9b59d devid 1 transid 10 /dev/loop0 scanned by udevd (4815) [ 79.259071][ T5504] loop0: detected capacity change from 0 to 32768 [ 79.380165][ T5504] BTRFS info (device loop0): using sha256 (sha256-ce) checksum algorithm [ 79.381652][ T5504] BTRFS info (device loop0): setting nodatacow, compression disabled [ 79.382940][ T5504] BTRFS info (device loop0): setting datacow [ 79.383990][ T5504] BTRFS info (device loop0): doing ref verification [ 79.385036][ T5504] BTRFS info (device loop0): force clearing of disk cache [ 79.386167][ T5504] BTRFS info (device loop0): turning off barriers [ 79.387156][ T5504] BTRFS info (device loop0): use zlib compression, level 3 [ 79.388409][ T5504] BTRFS info (device loop0): using free space tree [ 79.389854][ T5504] BTRFS info (device loop0): has skinny extents [ 79.397955][ T5504] BTRFS info (device loop0): clearing free space tree [ 79.399299][ T5504] BTRFS info (device loop0): clearing compat-ro feature flag for FREE_SPACE_TREE (0x1) [ 79.400893][ T5504] BTRFS info (device loop0): clearing compat-ro feature flag for FREE_SPACE_TREE_VALID (0x2) [ 79.405555][ T5504] BTRFS info (device loop0): creating free space tree [ 79.406917][ T5504] BTRFS info (device loop0): setting compat-ro feature flag for FREE_SPACE_TREE (0x1) [ 79.408458][ T5504] BTRFS info (device loop0): setting compat-ro feature flag for FREE_SPACE_TREE_VALID (0x2) [ 79.413303][ T5504] FAULT_INJECTION: forcing a failure. [ 79.413303][ T5504] name failslab, interval 1, probability 0, space 0, times 0 [ 79.415353][ T5504] CPU: 1 PID: 5504 Comm: syz.0.35 Tainted: G W syzkaller #0 [ 79.416712][ T5504] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/26/2026 [ 79.418292][ T5504] Call trace: [ 79.418792][ T5504] dump_backtrace+0x0/0x458 [ 79.419544][ T5504] show_stack+0x2c/0x3c [ 79.420212][ T5504] __dump_stack+0x30/0x40 [ 79.420929][ T5504] dump_stack_lvl+0xf4/0x15c [ 79.421681][ T5504] dump_stack+0x1c/0x5c [ 79.422378][ T5504] should_fail+0x3bc/0x514 [ 79.423092][ T5504] __should_failslab+0xbc/0x10c [ 79.423924][ T5504] should_failslab+0x10/0x28 [ 79.424699][ T5504] slab_pre_alloc_hook+0x64/0xe8 [ 79.425512][ T5504] kmem_cache_alloc+0x94/0x3d4 [ 79.426292][ T5504] btrfs_alloc_path+0x5c/0x68 [ 79.427056][ T5504] btrfs_insert_dir_item+0x184/0x3e8 [ 79.427902][ T5504] btrfs_add_link+0x2b0/0xa9c [ 79.428643][ T5504] btrfs_create+0x468/0x514 [ 79.429381][ T5504] path_openat+0xe18/0x2718 [ 79.430118][ T5504] do_filp_open+0x184/0x368 [ 79.430834][ T5504] do_sys_openat2+0x134/0x3f4 [ 79.431612][ T5504] __arm64_sys_openat+0x118/0x14c [ 79.432399][ T5504] invoke_syscall+0x98/0x2b0 [ 79.433127][ T5504] el0_svc_common+0x138/0x258 [ 79.433945][ T5504] do_el0_svc+0x58/0x13c [ 79.434671][ T5504] el0_svc+0x78/0x1d0 [ 79.435292][ T5504] el0t_64_sync_handler+0xcc/0xe4 [ 79.436123][ T5504] el0t_64_sync+0x1a0/0x1a4 [ 79.438366][ T5504] ------------[ cut here ]------------ [ 79.439337][ T5100] Bluetooth: hci1: command 0x0419 tx timeout [ 79.440429][ T5504] WARNING: CPU: 1 PID: 5504 at fs/btrfs/inode.c:6776 btrfs_add_link+0x718/0xa9c [ 79.441868][ T5504] Modules linked in: [ 79.442540][ T5504] CPU: 1 PID: 5504 Comm: syz.0.35 Tainted: G W syzkaller #0 [ 79.443987][ T5504] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/26/2026 [ 79.445528][ T5504] pstate: 62400005 (nZCv daif +PAN -UAO +TCO -DIT -SSBS BTYPE=--) [ 79.446800][ T5504] pc : btrfs_add_link+0x718/0xa9c [ 79.447595][ T5504] lr : btrfs_add_link+0x718/0xa9c [ 79.448364][ T5504] sp : ffff800021567580 [ 79.449023][ T5504] x29: ffff800021567680 x28: ffff0000de3752c0 x27: 0000000000000108 [ 79.450311][ T5504] x26: 00000000fffffff4 x25: 0000000000000000 x24: dfff800000000000 [ 79.451647][ T5504] x23: 0000000000000014 x22: 1fffe0001bc6ea63 x21: ffff7000042aceb8 [ 79.452936][ T5504] x20: 00000000fffffff4 x19: ffff0000de375318 x18: 0000000000000001 [ 79.454146][ T5504] x17: 0000000000000000 x16: ffff800011255484 x15: 00000000ffffffff [ 79.455403][ T5504] x14: 0000000000000001 x13: 1fffe000341f49ab x12: 0000000000ff0100 [ 79.456611][ T5504] x11: 0000000000000000 x10: 0000000000000000 x9 : 90f1addd0304b000 [ 79.457941][ T5504] x8 : 90f1addd0304b000 x7 : 0000000000000001 x6 : 0000000000000001 [ 79.459299][ T5504] x5 : ffff800021566e98 x4 : ffff80001436f3e0 x3 : ffff800008508fa8 [ 79.460587][ T5504] x2 : 0000000000000001 x1 : 0000000100000000 x0 : 0000000000000026 [ 79.461901][ T5504] Call trace: [ 79.462417][ T5504] btrfs_add_link+0x718/0xa9c [ 79.463140][ T5504] btrfs_create+0x468/0x514 [ 79.463856][ T5504] path_openat+0xe18/0x2718 [ 79.464582][ T5504] do_filp_open+0x184/0x368 [ 79.465330][ T5504] do_sys_openat2+0x134/0x3f4 [ 79.466099][ T5504] __arm64_sys_openat+0x118/0x14c [ 79.466946][ T5504] invoke_syscall+0x98/0x2b0 [ 79.467708][ T5504] el0_svc_common+0x138/0x258 [ 79.468459][ T5504] do_el0_svc+0x58/0x13c [ 79.469176][ T5504] el0_svc+0x78/0x1d0 [ 79.469837][ T5504] el0t_64_sync_handler+0xcc/0xe4 [ 79.470651][ T5504] el0t_64_sync+0x1a0/0x1a4 [ 79.471466][ T5504] irq event stamp: 81730 [ 79.472181][ T5504] hardirqs last enabled at (81729): [] __up_console_sem+0xb4/0xfc [ 79.473721][ T5504] hardirqs last disabled at (81730): [] el1_dbg+0x24/0x80 [ 79.475082][ T5504] softirqs last enabled at (81718): [] handle_softirqs+0xa40/0xbe4 [ 79.476699][ T5504] softirqs last disabled at (81683): [] __irq_exit_rcu+0x240/0x43c [ 79.478247][ T5504] ---[ end trace e33443594f927300 ]--- [ 79.480053][ T5504] BTRFS: error (device loop0) in btrfs_add_link:6776: errno=-12 Out of memory [ 79.481933][ T5504] BTRFS info (device loop0): forced readonly [ 79.541180][ T4815] BTRFS: device fsid ed167579-eb65-4e76-9a50-61ac97e9b59d devid 1 transid 10 /dev/loop0 scanned by udevd (4815) [ 79.641005][ T5527] loop0: detected capacity change from 0 to 32768 [ 79.760106][ T5527] BTRFS info (device loop0): using sha256 (sha256-ce) checksum algorithm [ 79.761505][ T5527] BTRFS info (device loop0): setting nodatacow, compression disabled [ 79.762691][ T5527] BTRFS info (device loop0): setting datacow [ 79.763691][ T5527] BTRFS info (device loop0): doing ref verification [ 79.764724][ T5527] BTRFS info (device loop0): force clearing of disk cache [ 79.765847][ T5527] BTRFS info (device loop0): turning off barriers [ 79.767612][ T5527] BTRFS info (device loop0): use zlib compression, level 3 [ 79.768780][ T5527] BTRFS info (device loop0): using free space tree [ 79.770275][ T5527] BTRFS info (device loop0): has skinny extents [ 79.778363][ T5527] BTRFS info (device loop0): clearing free space tree [ 79.779555][ T5527] BTRFS info (device loop0): clearing compat-ro feature flag for FREE_SPACE_TREE (0x1) [ 79.781006][ T5527] BTRFS info (device loop0): clearing compat-ro feature flag for FREE_SPACE_TREE_VALID (0x2) [ 79.785227][ T5527] BTRFS info (device loop0): creating free space tree [ 79.786703][ T5527] BTRFS info (device loop0): setting compat-ro feature flag for FREE_SPACE_TREE (0x1) [ 79.788337][ T5527] BTRFS info (device loop0): setting compat-ro feature flag for FREE_SPACE_TREE_VALID (0x2) [ 79.793364][ T5527] FAULT_INJECTION: forcing a failure. [ 79.793364][ T5527] name failslab, interval 1, probability 0, space 0, times 0 [ 79.795321][ T5527] CPU: 1 PID: 5527 Comm: syz.0.36 Tainted: G W syzkaller #0 [ 79.796695][ T5527] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/26/2026 [ 79.798297][ T5527] Call trace: [ 79.798803][ T5527] dump_backtrace+0x0/0x458 [ 79.799567][ T5527] show_stack+0x2c/0x3c [ 79.800244][ T5527] __dump_stack+0x30/0x40 [ 79.800951][ T5527] dump_stack_lvl+0xf4/0x15c [ 79.801668][ T5527] dump_stack+0x1c/0x5c [ 79.802366][ T5527] should_fail+0x3bc/0x514 [ 79.803089][ T5527] __should_failslab+0xbc/0x10c [ 79.803899][ T5527] should_failslab+0x10/0x28 [ 79.804705][ T5527] slab_pre_alloc_hook+0x64/0xe8 [ 79.805521][ T5527] kmem_cache_alloc+0x94/0x3d4 [ 79.806301][ T5527] btrfs_get_or_create_delayed_node+0x114/0x4a8 [ 79.807313][ T5527] btrfs_delayed_update_inode+0x3c/0x1b68 [ 79.808227][ T5527] btrfs_update_inode+0x210/0x3d4 [ 79.809021][ T5527] btrfs_create+0x364/0x514 [ 79.809762][ T5527] path_openat+0xe18/0x2718 [ 79.810492][ T5527] do_filp_open+0x184/0x368 [ 79.811195][ T5527] do_sys_openat2+0x134/0x3f4 [ 79.811964][ T5527] __arm64_sys_openat+0x118/0x14c [ 79.812799][ T5527] invoke_syscall+0x98/0x2b0 [ 79.813475][ T5527] el0_svc_common+0x138/0x258 [ 79.814239][ T5527] do_el0_svc+0x58/0x13c [ 79.815012][ T5527] el0_svc+0x78/0x1d0 [ 79.815632][ T5527] el0t_64_sync_handler+0xcc/0xe4 [ 79.816422][ T5527] el0t_64_sync+0x1a0/0x1a4 [ 79.976829][ T5550] loop0: detected capacity change from 0 to 32768 [ 79.979733][ T5550] BTRFS: device fsid ed167579-eb65-4e76-9a50-61ac97e9b59d devid 1 transid 8 /dev/loop0 scanned by syz.0.37 (5550) [ 80.043309][ T5550] BTRFS info (device loop0): using sha256 (sha256-ce) checksum algorithm [ 80.047464][ T5550] BTRFS info (device loop0): setting nodatacow, compression disabled [ 80.048933][ T5550] BTRFS info (device loop0): setting datacow [ 80.050086][ T5550] BTRFS info (device loop0): doing ref verification [ 80.051241][ T5550] BTRFS info (device loop0): force clearing of disk cache [ 80.052558][ T5550] BTRFS info (device loop0): turning off barriers [ 80.053598][ T5550] BTRFS info (device loop0): use zlib compression, level 3 [ 80.054836][ T5550] BTRFS info (device loop0): using free space tree [ 80.055975][ T5550] BTRFS info (device loop0): has skinny extents [ 80.065039][ T5550] BTRFS info (device loop0): clearing free space tree [ 80.066238][ T5550] BTRFS info (device loop0): clearing compat-ro feature flag for FREE_SPACE_TREE (0x1) [ 80.067906][ T5550] BTRFS info (device loop0): clearing compat-ro feature flag for FREE_SPACE_TREE_VALID (0x2) [ 80.071520][ T5550] BTRFS info (device loop0): creating free space tree [ 80.072914][ T5550] BTRFS info (device loop0): setting compat-ro feature flag for FREE_SPACE_TREE (0x1) [ 80.074444][ T5550] BTRFS info (device loop0): setting compat-ro feature flag for FREE_SPACE_TREE_VALID (0x2) [ 80.078961][ T5550] FAULT_INJECTION: forcing a failure. [ 80.078961][ T5550] name failslab, interval 1, probability 0, space 0, times 0 [ 80.081934][ T5550] CPU: 1 PID: 5550 Comm: syz.0.37 Tainted: G W syzkaller #0 [ 80.083334][ T5550] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/26/2026 [ 80.084876][ T5550] Call trace: [ 80.085385][ T5550] dump_backtrace+0x0/0x458 [ 80.086118][ T5550] show_stack+0x2c/0x3c [ 80.086703][ T5550] __dump_stack+0x30/0x40 [ 80.087406][ T5550] dump_stack_lvl+0xf4/0x15c [ 80.088194][ T5550] dump_stack+0x1c/0x5c [ 80.088891][ T5550] should_fail+0x3bc/0x514 [ 80.089636][ T5550] __should_failslab+0xbc/0x10c [ 80.090470][ T5550] should_failslab+0x10/0x28 [ 80.091283][ T5550] slab_pre_alloc_hook+0x64/0xe8 [ 80.092070][ T5550] kmem_cache_alloc+0x94/0x3d4 [ 80.092836][ T5550] btrfs_alloc_path+0x5c/0x68 [ 80.093623][ T5550] btrfs_insert_dir_item+0x184/0x3e8 [ 80.094458][ T5550] btrfs_add_link+0x2b0/0xa9c [ 80.095179][ T5550] btrfs_create+0x468/0x514 [ 80.095888][ T5550] path_openat+0xe18/0x2718 [ 80.096608][ T5550] do_filp_open+0x184/0x368 [ 80.097306][ T5550] do_sys_openat2+0x134/0x3f4 [ 80.098129][ T5550] __arm64_sys_openat+0x118/0x14c [ 80.099014][ T5550] invoke_syscall+0x98/0x2b0 [ 80.099792][ T5550] el0_svc_common+0x138/0x258 [ 80.100529][ T5550] do_el0_svc+0x58/0x13c [ 80.101214][ T5550] el0_svc+0x78/0x1d0 [ 80.101858][ T5550] el0t_64_sync_handler+0xcc/0xe4 [ 80.102653][ T5550] el0t_64_sync+0x1a0/0x1a4 [ 80.105432][ T5550] ------------[ cut here ]------------ [ 80.106489][ T5550] WARNING: CPU: 0 PID: 5550 at fs/btrfs/inode.c:6776 btrfs_add_link+0x718/0xa9c [ 80.107861][ T5550] Modules linked in: [ 80.108434][ T5550] CPU: 0 PID: 5550 Comm: syz.0.37 Tainted: G W syzkaller #0 [ 80.109727][ T5550] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/26/2026 [ 80.111410][ T5550] pstate: 62400005 (nZCv daif +PAN -UAO +TCO -DIT -SSBS BTYPE=--) [ 80.112666][ T5550] pc : btrfs_add_link+0x718/0xa9c [ 80.113491][ T5550] lr : btrfs_add_link+0x718/0xa9c [ 80.114290][ T5550] sp : ffff800021ca7580 [ 80.114967][ T5550] x29: ffff800021ca7680 x28: ffff0000de199d10 x27: 0000000000000108 [ 80.116326][ T5550] x26: 00000000fffffff4 x25: 0000000000000000 x24: dfff800000000000 [ 80.117594][ T5550] x23: 0000000000000014 x22: 1fffe0001bc333ad x21: ffff700004394eb8 [ 80.118932][ T5550] x20: 00000000fffffff4 x19: ffff0000de199d68 x18: 0000000000000001 [ 80.120206][ T5550] x17: 0000000000000000 x16: ffff800011255484 x15: 00000000ffffffff [ 80.121461][ T5550] x14: 0000000000000001 x13: 1fffe000341f07ab x12: 0000000000ff0100 [ 80.122879][ T5550] x11: 0000000000000000 x10: 0000000000000000 x9 : 0e2a73e0b9e6fe00 [ 80.124215][ T5550] x8 : 0e2a73e0b9e6fe00 x7 : 0000000000000001 x6 : 0000000000000001 [ 80.125482][ T5550] x5 : ffff800021ca6e98 x4 : ffff80001436f3e0 x3 : ffff800008508fa8 [ 80.126780][ T5550] x2 : 0000000000000001 x1 : 0000000100000000 x0 : 0000000000000026 [ 80.128071][ T5550] Call trace: [ 80.128595][ T5550] btrfs_add_link+0x718/0xa9c [ 80.129334][ T5550] btrfs_create+0x468/0x514 [ 80.130122][ T5550] path_openat+0xe18/0x2718 [ 80.130861][ T5550] do_filp_open+0x184/0x368 [ 80.131572][ T5550] do_sys_openat2+0x134/0x3f4 [ 80.132314][ T5550] __arm64_sys_openat+0x118/0x14c [ 80.133146][ T5550] invoke_syscall+0x98/0x2b0 [ 80.133888][ T5550] el0_svc_common+0x138/0x258 [ 80.134678][ T5550] do_el0_svc+0x58/0x13c [ 80.135405][ T5550] el0_svc+0x78/0x1d0 [ 80.136067][ T5550] el0t_64_sync_handler+0xcc/0xe4 [ 80.136861][ T5550] el0t_64_sync+0x1a0/0x1a4 [ 80.137581][ T5550] irq event stamp: 82196 [ 80.138268][ T5550] hardirqs last enabled at (82195): [] __up_console_sem+0xb4/0xfc [ 80.139741][ T5550] hardirqs last disabled at (82196): [] el1_dbg+0x24/0x80 [ 80.141124][ T5550] softirqs last enabled at (82174): [] handle_softirqs+0xa40/0xbe4 [ 80.142663][ T5550] softirqs last disabled at (82023): [] __irq_exit_rcu+0x240/0x43c [ 80.144163][ T5550] ---[ end trace e33443594f927301 ]--- [ 80.147541][ T5550] BTRFS: error (device loop0) in btrfs_add_link:6776: errno=-12 Out of memory [ 80.150276][ T5550] BTRFS info (device loop0): forced readonly [ 80.320103][ T5572] loop0: detected capacity change from 0 to 32768 [ 80.370374][ T5572] BTRFS: device fsid ed167579-eb65-4e76-9a50-61ac97e9b59d devid 1 transid 8 /dev/loop0 scanned by syz.0.38 (5572) [ 80.412674][ T5572] BTRFS info (device loop0): using sha256 (sha256-ce) checksum algorithm [ 80.414186][ T5572] BTRFS info (device loop0): setting nodatacow, compression disabled [ 80.415598][ T5572] BTRFS info (device loop0): setting datacow [ 80.416524][ T5572] BTRFS info (device loop0): doing ref verification [ 80.418309][ T5572] BTRFS info (device loop0): force clearing of disk cache [ 80.432514][ T5572] FAULT_INJECTION: forcing a failure. [ 80.432514][ T5572] name fail_page_alloc, interval 1, probability 0, space 0, times 1 [ 80.434650][ T5572] CPU: 1 PID: 5572 Comm: syz.0.38 Tainted: G W syzkaller #0 [ 80.436002][ T5572] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/26/2026 [ 80.437491][ T5572] Call trace: [ 80.437986][ T5572] dump_backtrace+0x0/0x458 [ 80.438673][ T5572] show_stack+0x2c/0x3c [ 80.439338][ T5572] __dump_stack+0x30/0x40 [ 80.440100][ T5572] dump_stack_lvl+0xf4/0x15c [ 80.440910][ T5572] dump_stack+0x1c/0x5c [ 80.441576][ T5572] should_fail+0x3bc/0x514 [ 80.442326][ T5572] should_fail_alloc_page+0x74/0xa8 [ 80.443210][ T5572] prepare_alloc_pages+0x160/0x45c [ 80.444065][ T5572] __alloc_pages+0x108/0x470 [ 80.444838][ T5572] alloc_pages+0x34c/0x5c0 [ 80.445592][ T5572] new_slab+0xe0/0x544 [ 80.446267][ T5572] ___slab_alloc+0x6b4/0xd8c [ 80.446892][ T5572] __slab_alloc+0x68/0xc0 [ 80.447569][ T5572] kmem_cache_alloc+0x2a4/0x3d4 [ 80.448406][ T5572] btrfs_get_or_create_delayed_node+0x114/0x4a8 [ 80.449412][ T5572] btrfs_delayed_update_inode+0x3c/0x1b68 [ 80.450319][ T5572] btrfs_update_inode+0x210/0x3d4 [ 80.451082][ T5572] btrfs_create+0x364/0x514 [ 80.451798][ T5572] path_openat+0xe18/0x2718 [ 80.452526][ T5572] do_filp_open+0x184/0x368 [ 80.453254][ T5572] do_sys_openat2+0x134/0x3f4 [ 80.454111][ T5572] __arm64_sys_openat+0x118/0x14c [ 80.454949][ T5572] invoke_syscall+0x98/0x2b0 [ 80.455697][ T5572] el0_svc_common+0x138/0x258 [ 80.456494][ T5572] do_el0_svc+0x58/0x13c [ 80.457166][ T5572] el0_svc+0x78/0x1d0 [ 80.457806][ T5572] el0t_64_sync_handler+0xcc/0xe4 [ 80.458626][ T5572] el0t_64_sync+0x1a0/0x1a4 [ 80.498794][ T4815] BTRFS: device fsid ed167579-eb65-4e76-9a50-61ac97e9b59d devid 1 transid 12 /dev/loop0 scanned by udevd (4815) [ 80.604583][ T5594] loop0: detected capacity change from 0 to 32768 [ 80.865121][ T5594] FAULT_INJECTION: forcing a failure. [ 80.865121][ T5594] name failslab, interval 1, probability 0, space 0, times 0 [ 80.867096][ T5594] CPU: 1 PID: 5594 Comm: syz.0.39 Tainted: G W syzkaller #0 [ 80.868642][ T5594] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/26/2026 [ 80.870373][ T5594] Call trace: [ 80.870922][ T5594] dump_backtrace+0x0/0x458 [ 80.871642][ T5594] show_stack+0x2c/0x3c [ 80.872293][ T5594] __dump_stack+0x30/0x40 [ 80.872978][ T5594] dump_stack_lvl+0xf4/0x15c [ 80.873740][ T5594] dump_stack+0x1c/0x5c [ 80.874451][ T5594] should_fail+0x3bc/0x514 [ 80.875208][ T5594] __should_failslab+0xbc/0x10c [ 80.876014][ T5594] should_failslab+0x10/0x28 [ 80.876816][ T5594] slab_pre_alloc_hook+0x64/0xe8 [ 80.877605][ T5594] kmem_cache_alloc+0x94/0x3d4 [ 80.878365][ T5594] security_inode_alloc+0x38/0x11c [ 80.879252][ T5594] inode_init_always+0x670/0xa84 [ 80.880074][ T5594] new_inode_pseudo+0x7c/0x1fc [ 80.880815][ T5594] new_inode+0x38/0x174 [ 80.881496][ T5594] btrfs_new_inode+0x158/0x1564 [ 80.882276][ T5594] btrfs_create+0x24c/0x514 [ 80.882978][ T5594] path_openat+0xe18/0x2718 [ 80.883687][ T5594] do_filp_open+0x184/0x368 [ 80.884401][ T5594] do_sys_openat2+0x134/0x3f4 [ 80.885176][ T5594] __arm64_sys_openat+0x118/0x14c [ 80.885994][ T5594] invoke_syscall+0x98/0x2b0 [ 80.886707][ T5594] el0_svc_common+0x138/0x258 [ 80.887438][ T5594] do_el0_svc+0x58/0x13c [ 80.888139][ T5594] el0_svc+0x78/0x1d0 [ 80.888793][ T5594] el0t_64_sync_handler+0xcc/0xe4 [ 80.889645][ T5594] el0t_64_sync+0x1a0/0x1a4 [ 81.120122][ T5617] loop0: detected capacity change from 0 to 32768 [ 81.200274][ T5617] BTRFS: device fsid ed167579-eb65-4e76-9a50-61ac97e9b59d devid 1 transid 8 /dev/loop0 scanned by syz.0.40 (5617) [ 81.311419][ T5617] FAULT_INJECTION: forcing a failure. [ 81.311419][ T5617] name failslab, interval 1, probability 0, space 0, times 0 [ 81.313439][ T5617] CPU: 1 PID: 5617 Comm: syz.0.40 Tainted: G W syzkaller #0 [ 81.314902][ T5617] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/26/2026 [ 81.316584][ T5617] Call trace: [ 81.317154][ T5617] dump_backtrace+0x0/0x458 [ 81.317825][ T5617] show_stack+0x2c/0x3c [ 81.318480][ T5617] __dump_stack+0x30/0x40 [ 81.319192][ T5617] dump_stack_lvl+0xf4/0x15c [ 81.319943][ T5617] dump_stack+0x1c/0x5c [ 81.320676][ T5617] should_fail+0x3bc/0x514 [ 81.321390][ T5617] __should_failslab+0xbc/0x10c [ 81.322177][ T5617] should_failslab+0x10/0x28 [ 81.322934][ T5617] slab_pre_alloc_hook+0x64/0xe8 [ 81.323668][ T5617] kmem_cache_alloc+0x94/0x3d4 [ 81.324412][ T5617] btrfs_alloc_path+0x5c/0x68 [ 81.325141][ T5617] btrfs_insert_dir_item+0x184/0x3e8 [ 81.325989][ T5617] btrfs_add_link+0x2b0/0xa9c [ 81.326678][ T5617] btrfs_create+0x468/0x514 [ 81.327397][ T5617] path_openat+0xe18/0x2718 [ 81.328123][ T5617] do_filp_open+0x184/0x368 [ 81.328755][ T5617] do_sys_openat2+0x134/0x3f4 [ 81.329444][ T5617] __arm64_sys_openat+0x118/0x14c [ 81.330277][ T5617] invoke_syscall+0x98/0x2b0 [ 81.330981][ T5617] el0_svc_common+0x138/0x258 [ 81.331826][ T5617] do_el0_svc+0x58/0x13c [ 81.332515][ T5617] el0_svc+0x78/0x1d0 [ 81.333182][ T5617] el0t_64_sync_handler+0xcc/0xe4 [ 81.334039][ T5617] el0t_64_sync+0x1a0/0x1a4 [ 81.338548][ T5617] ------------[ cut here ]------------ [ 81.341262][ T5617] WARNING: CPU: 1 PID: 5617 at fs/btrfs/inode.c:6776 btrfs_add_link+0x718/0xa9c [ 81.342608][ T5617] Modules linked in: [ 81.343179][ T5617] CPU: 1 PID: 5617 Comm: syz.0.40 Tainted: G W syzkaller #0 [ 81.344577][ T5617] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/26/2026 [ 81.346200][ T5617] pstate: 62400005 (nZCv daif +PAN -UAO +TCO -DIT -SSBS BTYPE=--) [ 81.347492][ T5617] pc : btrfs_add_link+0x718/0xa9c [ 81.348358][ T5617] lr : btrfs_add_link+0x718/0xa9c [ 81.349074][ T5617] sp : ffff800021f57580 [ 81.349725][ T5617] x29: ffff800021f57680 x28: ffff0000de199630 x27: 0000000000000108 [ 81.351101][ T5617] x26: 00000000fffffff4 x25: 0000000000000000 x24: dfff800000000000 [ 81.352336][ T5617] x23: 0000000000000014 x22: 1fffe0001bc332d1 x21: ffff7000043eaeb8 [ 81.353538][ T5617] x20: 00000000fffffff4 x19: ffff0000de199688 x18: 0000000000000001 [ 81.354800][ T5617] x17: 0000000000000000 x16: ffff800011255484 x15: 00000000ffffffff [ 81.356088][ T5617] x14: 0000000000000001 x13: 1fffe000341f49ab x12: 0000000000ff0100 [ 81.357423][ T5617] x11: 0000000000000000 x10: 0000000000000000 x9 : 144ef136e34c0200 [ 81.358672][ T5617] x8 : 144ef136e34c0200 x7 : 0000000000000001 x6 : 0000000000000001 [ 81.359856][ T5617] x5 : ffff800021f56e98 x4 : ffff80001436f3e0 x3 : ffff800008508fa8 [ 81.361082][ T5617] x2 : 0000000000000001 x1 : 0000000100000000 x0 : 0000000000000026 [ 81.362336][ T5617] Call trace: [ 81.362829][ T5617] btrfs_add_link+0x718/0xa9c [ 81.363522][ T5617] btrfs_create+0x468/0x514 [ 81.364138][ T5617] path_openat+0xe18/0x2718 [ 81.364779][ T5617] do_filp_open+0x184/0x368 [ 81.365402][ T5617] do_sys_openat2+0x134/0x3f4 [ 81.366094][ T5617] __arm64_sys_openat+0x118/0x14c [ 81.366869][ T5617] invoke_syscall+0x98/0x2b0 [ 81.367567][ T5617] el0_svc_common+0x138/0x258 [ 81.368278][ T5617] do_el0_svc+0x58/0x13c [ 81.368919][ T5617] el0_svc+0x78/0x1d0 [ 81.369484][ T5617] el0t_64_sync_handler+0xcc/0xe4 [ 81.370206][ T5617] el0t_64_sync+0x1a0/0x1a4 [ 81.370886][ T5617] irq event stamp: 82644 [ 81.371511][ T5617] hardirqs last enabled at (82643): [] __up_console_sem+0xb4/0xfc [ 81.372990][ T5617] hardirqs last disabled at (82644): [] el1_dbg+0x24/0x80 [ 81.374440][ T5617] softirqs last enabled at (82632): [] handle_softirqs+0xa40/0xbe4 [ 81.375998][ T5617] softirqs last disabled at (82559): [] __irq_exit_rcu+0x240/0x43c [ 81.377515][ T5617] ---[ end trace e33443594f927302 ]--- [ 81.382086][ T5617] BTRFS: error (device loop0) in btrfs_add_link:6776: errno=-12 Out of memory [ 81.524656][ T5640] loop0: detected capacity change from 0 to 32768 [ 81.571412][ T5640] BTRFS: device fsid ed167579-eb65-4e76-9a50-61ac97e9b59d devid 1 transid 8 /dev/loop0 scanned by syz.0.41 (5640) [ 81.637573][ T5640] FAULT_INJECTION: forcing a failure. [ 81.637573][ T5640] name failslab, interval 1, probability 0, space 0, times 0 [ 81.640168][ T5640] CPU: 0 PID: 5640 Comm: syz.0.41 Tainted: G W syzkaller #0 [ 81.641515][ T5640] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/26/2026 [ 81.643122][ T5640] Call trace: [ 81.643599][ T5640] dump_backtrace+0x0/0x458 [ 81.644334][ T5640] show_stack+0x2c/0x3c [ 81.645087][ T5640] __dump_stack+0x30/0x40 [ 81.645852][ T5640] dump_stack_lvl+0xf4/0x15c [ 81.646625][ T5640] dump_stack+0x1c/0x5c [ 81.647352][ T5640] should_fail+0x3bc/0x514 [ 81.648060][ T5640] __should_failslab+0xbc/0x10c [ 81.648837][ T5640] should_failslab+0x10/0x28 [ 81.649546][ T5640] slab_pre_alloc_hook+0x64/0xe8 [ 81.650322][ T5640] kmem_cache_alloc+0x94/0x3d4 [ 81.651036][ T5640] btrfs_get_or_create_delayed_node+0x114/0x4a8 [ 81.652055][ T5640] btrfs_delayed_update_inode+0x3c/0x1b68 [ 81.652924][ T5640] btrfs_update_inode+0x210/0x3d4 [ 81.653735][ T5640] btrfs_create+0x364/0x514 [ 81.654447][ T5640] path_openat+0xe18/0x2718 [ 81.655205][ T5640] do_filp_open+0x184/0x368 [ 81.655900][ T5640] do_sys_openat2+0x134/0x3f4 [ 81.656632][ T5640] __arm64_sys_openat+0x118/0x14c [ 81.657471][ T5640] invoke_syscall+0x98/0x2b0 [ 81.658223][ T5640] el0_svc_common+0x138/0x258 [ 81.658968][ T5640] do_el0_svc+0x58/0x13c [ 81.659638][ T5640] el0_svc+0x78/0x1d0 [ 81.660276][ T5640] el0t_64_sync_handler+0xcc/0xe4 [ 81.661083][ T5640] el0t_64_sync+0x1a0/0x1a4 1970/01/01 00:01:21 executed programs: 29 [ 81.722850][ T4815] BTRFS: device fsid ed167579-eb65-4e76-9a50-61ac97e9b59d devid 1 transid 12 /dev/loop0 scanned by udevd (4815) [ 81.981492][ T5661] FAULT_INJECTION: forcing a failure. [ 81.981492][ T5661] name failslab, interval 1, probability 0, space 0, times 0 [ 81.983657][ T5661] CPU: 1 PID: 5661 Comm: syz.0.42 Tainted: G W syzkaller #0 [ 81.985003][ T5661] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/26/2026 [ 81.986497][ T5661] Call trace: [ 81.987020][ T5661] dump_backtrace+0x0/0x458 [ 81.987717][ T5661] show_stack+0x2c/0x3c [ 81.988399][ T5661] __dump_stack+0x30/0x40 [ 81.989046][ T5661] dump_stack_lvl+0xf4/0x15c [ 81.989806][ T5661] dump_stack+0x1c/0x5c [ 81.990493][ T5661] should_fail+0x3bc/0x514 [ 81.991206][ T5661] __should_failslab+0xbc/0x10c [ 81.992026][ T5661] should_failslab+0x10/0x28 [ 81.992750][ T5661] slab_pre_alloc_hook+0x64/0xe8 [ 81.993535][ T5661] kmem_cache_alloc+0x94/0x3d4 [ 81.994286][ T5661] btrfs_get_or_create_delayed_node+0x114/0x4a8 [ 81.995230][ T5661] btrfs_delayed_update_inode+0x3c/0x1b68 [ 81.996121][ T5661] btrfs_update_inode+0x210/0x3d4 [ 81.996953][ T5661] btrfs_create+0x364/0x514 [ 81.997625][ T5661] path_openat+0xe18/0x2718 [ 81.998340][ T5661] do_filp_open+0x184/0x368 [ 81.999031][ T5661] do_sys_openat2+0x134/0x3f4 [ 81.999804][ T5661] __arm64_sys_openat+0x118/0x14c [ 82.000629][ T5661] invoke_syscall+0x98/0x2b0 [ 82.001406][ T5661] el0_svc_common+0x138/0x258 [ 82.002210][ T5661] do_el0_svc+0x58/0x13c [ 82.002921][ T5661] el0_svc+0x78/0x1d0 [ 82.003606][ T5661] el0t_64_sync_handler+0xcc/0xe4 [ 82.004411][ T5661] el0t_64_sync+0x1a0/0x1a4 [ 82.200585][ T5684] BTRFS: device fsid ed167579-eb65-4e76-9a50-61ac97e9b59d devid 1 transid 8 /dev/loop0 scanned by syz.0.43 (5684) [ 82.256977][ T5684] FAULT_INJECTION: forcing a failure. [ 82.256977][ T5684] name failslab, interval 1, probability 0, space 0, times 0 [ 82.267107][ T5684] CPU: 0 PID: 5684 Comm: syz.0.43 Tainted: G W syzkaller #0 [ 82.268596][ T5684] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/26/2026 [ 82.270214][ T5684] Call trace: [ 82.270706][ T5684] dump_backtrace+0x0/0x458 [ 82.271449][ T5684] show_stack+0x2c/0x3c [ 82.272162][ T5684] __dump_stack+0x30/0x40 [ 82.272879][ T5684] dump_stack_lvl+0xf4/0x15c [ 82.273691][ T5684] dump_stack+0x1c/0x5c [ 82.274380][ T5684] should_fail+0x3bc/0x514 [ 82.275085][ T5684] __should_failslab+0xbc/0x10c [ 82.275862][ T5684] should_failslab+0x10/0x28 [ 82.276577][ T5684] slab_pre_alloc_hook+0x64/0xe8 [ 82.277344][ T5684] kmem_cache_alloc+0x94/0x3d4 [ 82.278141][ T5684] btrfs_alloc_path+0x5c/0x68 [ 82.278924][ T5684] btrfs_insert_dir_item+0x184/0x3e8 [ 82.279763][ T5684] btrfs_add_link+0x2b0/0xa9c [ 82.280490][ T5684] btrfs_create+0x468/0x514 [ 82.281137][ T5684] path_openat+0xe18/0x2718 [ 82.281921][ T5684] do_filp_open+0x184/0x368 [ 82.282676][ T5684] do_sys_openat2+0x134/0x3f4 [ 82.283437][ T5684] __arm64_sys_openat+0x118/0x14c [ 82.284282][ T5684] invoke_syscall+0x98/0x2b0 [ 82.285027][ T5684] el0_svc_common+0x138/0x258 [ 82.285814][ T5684] do_el0_svc+0x58/0x13c [ 82.286492][ T5684] el0_svc+0x78/0x1d0 [ 82.287130][ T5684] el0t_64_sync_handler+0xcc/0xe4 [ 82.287939][ T5684] el0t_64_sync+0x1a0/0x1a4 [ 82.289324][ T5684] ------------[ cut here ]------------ [ 82.290255][ T5684] WARNING: CPU: 0 PID: 5684 at fs/btrfs/inode.c:6776 btrfs_add_link+0x718/0xa9c [ 82.291603][ T5684] Modules linked in: [ 82.292261][ T5684] CPU: 0 PID: 5684 Comm: syz.0.43 Tainted: G W syzkaller #0 [ 82.293473][ T5684] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/26/2026 [ 82.295145][ T5684] pstate: 62400005 (nZCv daif +PAN -UAO +TCO -DIT -SSBS BTYPE=--) [ 82.296449][ T5684] pc : btrfs_add_link+0x718/0xa9c [ 82.297297][ T5684] lr : btrfs_add_link+0x718/0xa9c [ 82.298085][ T5684] sp : ffff800022347580 [ 82.298779][ T5684] x29: ffff800022347680 x28: ffff0000dcae50b0 x27: 0000000000000108 [ 82.300096][ T5684] x26: 00000000fffffff4 x25: 0000000000000000 x24: dfff800000000000 [ 82.301442][ T5684] x23: 0000000000000014 x22: 1fffe0001b95ca21 x21: ffff700004468eb8 [ 82.302734][ T5684] x20: 00000000fffffff4 x19: ffff0000dcae5108 x18: 0000000000000001 [ 82.304021][ T5684] x17: 0000000000000000 x16: ffff800008304ad4 x15: 00000000ffffffff [ 82.305298][ T5684] x14: 0000000000000001 x13: 1ffff00004468dd0 x12: 0000000000ff0100 [ 82.306544][ T5684] x11: 0000000000000000 x10: 0000000000000000 x9 : 889b0d83ab26a300 [ 82.307868][ T5684] x8 : 889b0d83ab26a300 x7 : 0000000000000001 x6 : 0000000000000001 [ 82.309259][ T5684] x5 : ffff800022346e98 x4 : ffff80001436f3e0 x3 : ffff800008304be4 [ 82.310602][ T5684] x2 : 0000000000000001 x1 : 0000000100000000 x0 : 0000000000000026 [ 82.311947][ T5684] Call trace: [ 82.312520][ T5684] btrfs_add_link+0x718/0xa9c [ 82.313357][ T5684] btrfs_create+0x468/0x514 [ 82.314103][ T5684] path_openat+0xe18/0x2718 [ 82.314830][ T5684] do_filp_open+0x184/0x368 [ 82.315557][ T5684] do_sys_openat2+0x134/0x3f4 [ 82.316320][ T5684] __arm64_sys_openat+0x118/0x14c [ 82.317121][ T5684] invoke_syscall+0x98/0x2b0 [ 82.317849][ T5684] el0_svc_common+0x138/0x258 [ 82.318549][ T5684] do_el0_svc+0x58/0x13c [ 82.319218][ T5684] el0_svc+0x78/0x1d0 [ 82.319817][ T5684] el0t_64_sync_handler+0xcc/0xe4 [ 82.320652][ T5684] el0t_64_sync+0x1a0/0x1a4 [ 82.321392][ T5684] irq event stamp: 80996 [ 82.322036][ T5684] hardirqs last enabled at (80995): [] __up_console_sem+0xb4/0xfc [ 82.323510][ T5684] hardirqs last disabled at (80996): [] el1_dbg+0x24/0x80 [ 82.324794][ T5684] softirqs last enabled at (80976): [] handle_softirqs+0xa40/0xbe4 [ 82.326214][ T5684] softirqs last disabled at (80875): [] __irq_exit_rcu+0x240/0x43c [ 82.327642][ T5684] ---[ end trace e33443594f927303 ]--- [ 82.329024][ T5684] BTRFS: error (device loop0) in btrfs_add_link:6776: errno=-12 Out of memory [ 82.488048][ T5706] BTRFS: device fsid ed167579-eb65-4e76-9a50-61ac97e9b59d devid 1 transid 8 /dev/loop0 scanned by syz.0.44 (5706) [ 82.516062][ T5706] FAULT_INJECTION: forcing a failure. [ 82.516062][ T5706] name failslab, interval 1, probability 0, space 0, times 0 [ 82.518067][ T5706] CPU: 0 PID: 5706 Comm: syz.0.44 Tainted: G W syzkaller #0 [ 82.519338][ T5706] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/26/2026 [ 82.520941][ T5706] Call trace: [ 82.521458][ T5706] dump_backtrace+0x0/0x458 [ 82.522271][ T5706] show_stack+0x2c/0x3c [ 82.522954][ T5706] __dump_stack+0x30/0x40 [ 82.523669][ T5706] dump_stack_lvl+0xf4/0x15c [ 82.524405][ T5706] dump_stack+0x1c/0x5c [ 82.525133][ T5706] should_fail+0x3bc/0x514 [ 82.525883][ T5706] __should_failslab+0xbc/0x10c [ 82.526680][ T5706] should_failslab+0x10/0x28 [ 82.527459][ T5706] slab_pre_alloc_hook+0x64/0xe8 [ 82.528262][ T5706] kmem_cache_alloc+0x94/0x3d4 [ 82.529017][ T5706] btrfs_get_or_create_delayed_node+0x114/0x4a8 [ 82.530093][ T5706] btrfs_delayed_update_inode+0x3c/0x1b68 [ 82.531062][ T5706] btrfs_update_inode+0x210/0x3d4 [ 82.531903][ T5706] btrfs_create+0x364/0x514 [ 82.532641][ T5706] path_openat+0xe18/0x2718 [ 82.533420][ T5706] do_filp_open+0x184/0x368 [ 82.534135][ T5706] do_sys_openat2+0x134/0x3f4 [ 82.534905][ T5706] __arm64_sys_openat+0x118/0x14c [ 82.535697][ T5706] invoke_syscall+0x98/0x2b0 [ 82.536464][ T5706] el0_svc_common+0x138/0x258 [ 82.537204][ T5706] do_el0_svc+0x58/0x13c [ 82.537876][ T5706] el0_svc+0x78/0x1d0 [ 82.538546][ T5706] el0t_64_sync_handler+0xcc/0xe4 [ 82.539321][ T5706] el0t_64_sync+0x1a0/0x1a4 [ 82.695942][ T5728] BTRFS: device fsid ed167579-eb65-4e76-9a50-61ac97e9b59d devid 1 transid 8 /dev/loop0 scanned by syz.0.45 (5728) [ 82.711949][ T5728] FAULT_INJECTION: forcing a failure. [ 82.711949][ T5728] name failslab, interval 1, probability 0, space 0, times 0 [ 82.713939][ T5728] CPU: 1 PID: 5728 Comm: syz.0.45 Tainted: G W syzkaller #0 [ 82.715401][ T5728] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/26/2026 [ 82.716981][ T5728] Call trace: [ 82.717473][ T5728] dump_backtrace+0x0/0x458 [ 82.718212][ T5728] show_stack+0x2c/0x3c [ 82.718936][ T5728] __dump_stack+0x30/0x40 [ 82.719657][ T5728] dump_stack_lvl+0xf4/0x15c [ 82.720401][ T5728] dump_stack+0x1c/0x5c [ 82.721070][ T5728] should_fail+0x3bc/0x514 [ 82.721772][ T5728] __should_failslab+0xbc/0x10c [ 82.722570][ T5728] should_failslab+0x10/0x28 [ 82.723301][ T5728] slab_pre_alloc_hook+0x64/0xe8 [ 82.724086][ T5728] kmem_cache_alloc+0x94/0x3d4 [ 82.724893][ T5728] btrfs_alloc_path+0x5c/0x68 [ 82.725646][ T5728] btrfs_insert_dir_item+0x184/0x3e8 [ 82.726527][ T5728] btrfs_add_link+0x2b0/0xa9c [ 82.727314][ T5728] btrfs_create+0x468/0x514 [ 82.728061][ T5728] path_openat+0xe18/0x2718 [ 82.728768][ T5728] do_filp_open+0x184/0x368 [ 82.729568][ T5728] do_sys_openat2+0x134/0x3f4 [ 82.730332][ T5728] __arm64_sys_openat+0x118/0x14c [ 82.731138][ T5728] invoke_syscall+0x98/0x2b0 [ 82.731893][ T5728] el0_svc_common+0x138/0x258 [ 82.732695][ T5728] do_el0_svc+0x58/0x13c [ 82.733358][ T5728] el0_svc+0x78/0x1d0 [ 82.733991][ T5728] el0t_64_sync_handler+0xcc/0xe4 [ 82.734742][ T5728] el0t_64_sync+0x1a0/0x1a4 [ 82.737293][ T5728] ------------[ cut here ]------------ [ 82.738251][ T5728] WARNING: CPU: 1 PID: 5728 at fs/btrfs/inode.c:6776 btrfs_add_link+0x718/0xa9c [ 82.739637][ T5728] Modules linked in: [ 82.740292][ T5728] CPU: 1 PID: 5728 Comm: syz.0.45 Tainted: G W syzkaller #0 [ 82.741743][ T5728] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/26/2026 [ 82.743366][ T5728] pstate: 62400005 (nZCv daif +PAN -UAO +TCO -DIT -SSBS BTYPE=--) [ 82.744651][ T5728] pc : btrfs_add_link+0x718/0xa9c [ 82.745451][ T5728] lr : btrfs_add_link+0x718/0xa9c [ 82.746299][ T5728] sp : ffff800022497580 [ 82.746943][ T5728] x29: ffff800022497680 x28: ffff0000dcae5370 x27: 0000000000000108 [ 82.748221][ T5728] x26: 00000000fffffff4 x25: 0000000000000000 x24: dfff800000000000 [ 82.749523][ T5728] x23: 0000000000000014 x22: 1fffe0001b95ca79 x21: ffff700004492eb8 [ 82.750868][ T5728] x20: 00000000fffffff4 x19: ffff0000dcae53c8 x18: 0000000000000001 [ 82.752092][ T5728] x17: 0000000000000000 x16: ffff800011255484 x15: 00000000ffffffff [ 82.753448][ T5728] x14: 0000000000000001 x13: 1fffe000341f49ab x12: 0000000000ff0100 [ 82.754746][ T5728] x11: 0000000000000000 x10: 0000000000000000 x9 : 3a4bcbad5f7a2900 [ 82.755963][ T5728] x8 : 3a4bcbad5f7a2900 x7 : 0000000000000001 x6 : 0000000000000001 [ 82.757254][ T5728] x5 : ffff800022496e98 x4 : ffff80001436f3e0 x3 : ffff800008508fa8 [ 82.758559][ T5728] x2 : 0000000000000001 x1 : 0000000100000000 x0 : 0000000000000026 [ 82.759918][ T5728] Call trace: [ 82.760451][ T5728] btrfs_add_link+0x718/0xa9c [ 82.761196][ T5728] btrfs_create+0x468/0x514 [ 82.761955][ T5728] path_openat+0xe18/0x2718 [ 82.762670][ T5728] do_filp_open+0x184/0x368 [ 82.763356][ T5728] do_sys_openat2+0x134/0x3f4 [ 82.764096][ T5728] __arm64_sys_openat+0x118/0x14c [ 82.764891][ T5728] invoke_syscall+0x98/0x2b0 [ 82.765668][ T5728] el0_svc_common+0x138/0x258 [ 82.766552][ T5728] do_el0_svc+0x58/0x13c [ 82.767260][ T5728] el0_svc+0x78/0x1d0 [ 82.767923][ T5728] el0t_64_sync_handler+0xcc/0xe4 [ 82.768810][ T5728] el0t_64_sync+0x1a0/0x1a4 [ 82.769552][ T5728] irq event stamp: 82654 [ 82.770307][ T5728] hardirqs last enabled at (82653): [] __up_console_sem+0xb4/0xfc [ 82.771809][ T5728] hardirqs last disabled at (82654): [] el1_dbg+0x24/0x80 [ 82.773232][ T5728] softirqs last enabled at (82634): [] handle_softirqs+0xa40/0xbe4 [ 82.774714][ T5728] softirqs last disabled at (82541): [] __irq_exit_rcu+0x240/0x43c [ 82.776202][ T5728] ---[ end trace e33443594f927304 ]--- [ 82.779693][ T5728] BTRFS: error (device loop0) in btrfs_add_link:6776: errno=-12 Out of memory [ 83.000403][ T5750] BTRFS: device fsid ed167579-eb65-4e76-9a50-61ac97e9b59d devid 1 transid 8 /dev/loop0 scanned by syz.0.46 (5750) [ 83.070640][ T5750] FAULT_INJECTION: forcing a failure. [ 83.070640][ T5750] name failslab, interval 1, probability 0, space 0, times 0 [ 83.072716][ T5750] CPU: 0 PID: 5750 Comm: syz.0.46 Tainted: G W syzkaller #0 [ 83.074106][ T5750] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/26/2026 [ 83.075677][ T5750] Call trace: [ 83.076172][ T5750] dump_backtrace+0x0/0x458 [ 83.076837][ T5750] show_stack+0x2c/0x3c [ 83.077532][ T5750] __dump_stack+0x30/0x40 [ 83.078195][ T5750] dump_stack_lvl+0xf4/0x15c [ 83.078861][ T5750] dump_stack+0x1c/0x5c [ 83.079489][ T5750] should_fail+0x3bc/0x514 [ 83.080201][ T5750] __should_failslab+0xbc/0x10c [ 83.081007][ T5750] should_failslab+0x10/0x28 [ 83.081754][ T5750] slab_pre_alloc_hook+0x64/0xe8 [ 83.082580][ T5750] kmem_cache_alloc+0x94/0x3d4 [ 83.083367][ T5750] btrfs_alloc_path+0x5c/0x68 [ 83.084152][ T5750] btrfs_insert_dir_item+0x184/0x3e8 [ 83.085004][ T5750] btrfs_add_link+0x2b0/0xa9c [ 83.085716][ T5750] btrfs_create+0x468/0x514 [ 83.086528][ T5750] path_openat+0xe18/0x2718 [ 83.087280][ T5750] do_filp_open+0x184/0x368 [ 83.087997][ T5750] do_sys_openat2+0x134/0x3f4 [ 83.088743][ T5750] __arm64_sys_openat+0x118/0x14c [ 83.089604][ T5750] invoke_syscall+0x98/0x2b0 [ 83.090363][ T5750] el0_svc_common+0x138/0x258 [ 83.091168][ T5750] do_el0_svc+0x58/0x13c [ 83.091818][ T5750] el0_svc+0x78/0x1d0 [ 83.092476][ T5750] el0t_64_sync_handler+0xcc/0xe4 [ 83.093376][ T5750] el0t_64_sync+0x1a0/0x1a4 [ 83.096006][ T5750] ------------[ cut here ]------------ [ 83.096977][ T5750] WARNING: CPU: 0 PID: 5750 at fs/btrfs/inode.c:6776 btrfs_add_link+0x718/0xa9c [ 83.098369][ T5750] Modules linked in: [ 83.098982][ T5750] CPU: 0 PID: 5750 Comm: syz.0.46 Tainted: G W syzkaller #0 [ 83.100375][ T5750] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/26/2026 [ 83.101996][ T5750] pstate: 62400005 (nZCv daif +PAN -UAO +TCO -DIT -SSBS BTYPE=--) [ 83.103252][ T5750] pc : btrfs_add_link+0x718/0xa9c [ 83.104080][ T5750] lr : btrfs_add_link+0x718/0xa9c [ 83.104834][ T5750] sp : ffff8000224e7580 [ 83.105464][ T5750] x29: ffff8000224e7680 x28: ffff0000de375a50 x27: 0000000000000108 [ 83.106699][ T5750] x26: 00000000fffffff4 x25: 0000000000000000 x24: dfff800000000000 [ 83.107957][ T5750] x23: 0000000000000014 x22: 1fffe0001bc6eb55 x21: ffff70000449ceb8 [ 83.109179][ T5750] x20: 00000000fffffff4 x19: ffff0000de375aa8 x18: 0000000000000001 [ 83.110446][ T5750] x17: 0000000000000000 x16: ffff800011255484 x15: 00000000ffffffff [ 83.111765][ T5750] x14: 0000000000000001 x13: 1fffe000341f07ab x12: 0000000000ff0100 [ 83.113063][ T5750] x11: 0000000000000000 x10: 0000000000000000 x9 : 8005961ea1fd9500 [ 83.114270][ T5750] x8 : 8005961ea1fd9500 x7 : 0000000000000001 x6 : 0000000000000001 [ 83.115555][ T5750] x5 : ffff8000224e6e98 x4 : ffff80001436f3e0 x3 : ffff800008508fa8 [ 83.116827][ T5750] x2 : 0000000000000001 x1 : 0000000100000000 x0 : 0000000000000026 [ 83.118128][ T5750] Call trace: [ 83.118661][ T5750] btrfs_add_link+0x718/0xa9c [ 83.119455][ T5750] btrfs_create+0x468/0x514 [ 83.120202][ T5750] path_openat+0xe18/0x2718 [ 83.120907][ T5750] do_filp_open+0x184/0x368 [ 83.121611][ T5750] do_sys_openat2+0x134/0x3f4 [ 83.122263][ T5750] __arm64_sys_openat+0x118/0x14c [ 83.123105][ T5750] invoke_syscall+0x98/0x2b0 [ 83.123872][ T5750] el0_svc_common+0x138/0x258 [ 83.124651][ T5750] do_el0_svc+0x58/0x13c [ 83.125330][ T5750] el0_svc+0x78/0x1d0 [ 83.126044][ T5750] el0t_64_sync_handler+0xcc/0xe4 [ 83.126871][ T5750] el0t_64_sync+0x1a0/0x1a4 [ 83.127642][ T5750] irq event stamp: 81692 [ 83.128324][ T5750] hardirqs last enabled at (81691): [] __up_console_sem+0xb4/0xfc [ 83.129935][ T5750] hardirqs last disabled at (81692): [] el1_dbg+0x24/0x80 [ 83.131404][ T5750] softirqs last enabled at (81672): [] handle_softirqs+0xa40/0xbe4 [ 83.133070][ T5750] softirqs last disabled at (81555): [] __irq_exit_rcu+0x240/0x43c [ 83.134553][ T5750] ---[ end trace e33443594f927305 ]--- [ 83.137668][ T5750] BTRFS: error (device loop0) in btrfs_add_link:6776: errno=-12 Out of memory [ 83.360323][ T5772] BTRFS: device fsid ed167579-eb65-4e76-9a50-61ac97e9b59d devid 1 transid 8 /dev/loop0 scanned by syz.0.47 (5772) [ 83.364350][ T5772] btrfs_printk: 134 callbacks suppressed [ 83.364356][ T5772] BTRFS info (device loop0): using sha256 (sha256-ce) checksum algorithm [ 83.366576][ T5772] BTRFS info (device loop0): setting nodatacow, compression disabled [ 83.367869][ T5772] BTRFS info (device loop0): setting datacow [ 83.368923][ T5772] BTRFS info (device loop0): doing ref verification [ 83.370063][ T5772] BTRFS info (device loop0): force clearing of disk cache [ 83.371118][ T5772] BTRFS info (device loop0): turning off barriers [ 83.372070][ T5772] BTRFS info (device loop0): use zlib compression, level 3 [ 83.373443][ T5772] BTRFS info (device loop0): using free space tree [ 83.374452][ T5772] BTRFS info (device loop0): has skinny extents [ 83.382546][ T5772] BTRFS info (device loop0): clearing free space tree [ 83.383706][ T5772] BTRFS info (device loop0): clearing compat-ro feature flag for FREE_SPACE_TREE (0x1) [ 83.385253][ T5772] BTRFS info (device loop0): clearing compat-ro feature flag for FREE_SPACE_TREE_VALID (0x2) [ 83.388737][ T5772] BTRFS info (device loop0): creating free space tree [ 83.390234][ T5772] BTRFS info (device loop0): setting compat-ro feature flag for FREE_SPACE_TREE (0x1) [ 83.391745][ T5772] BTRFS info (device loop0): setting compat-ro feature flag for FREE_SPACE_TREE_VALID (0x2) [ 83.396195][ T5772] FAULT_INJECTION: forcing a failure. [ 83.396195][ T5772] name failslab, interval 1, probability 0, space 0, times 0 [ 83.398194][ T5772] CPU: 0 PID: 5772 Comm: syz.0.47 Tainted: G W syzkaller #0 [ 83.399566][ T5772] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/26/2026 [ 83.401197][ T5772] Call trace: [ 83.401714][ T5772] dump_backtrace+0x0/0x458 [ 83.402414][ T5772] show_stack+0x2c/0x3c [ 83.403075][ T5772] __dump_stack+0x30/0x40 [ 83.403850][ T5772] dump_stack_lvl+0xf4/0x15c [ 83.404620][ T5772] dump_stack+0x1c/0x5c [ 83.405317][ T5772] should_fail+0x3bc/0x514 [ 83.406083][ T5772] __should_failslab+0xbc/0x10c [ 83.406883][ T5772] should_failslab+0x10/0x28 [ 83.407621][ T5772] slab_pre_alloc_hook+0x64/0xe8 [ 83.408457][ T5772] kmem_cache_alloc+0x94/0x3d4 [ 83.409272][ T5772] btrfs_alloc_path+0x5c/0x68 [ 83.410095][ T5772] btrfs_insert_dir_item+0x184/0x3e8 [ 83.411011][ T5772] btrfs_add_link+0x2b0/0xa9c [ 83.411786][ T5772] btrfs_create+0x468/0x514 [ 83.412535][ T5772] path_openat+0xe18/0x2718 [ 83.413262][ T5772] do_filp_open+0x184/0x368 [ 83.413958][ T5772] do_sys_openat2+0x134/0x3f4 [ 83.414690][ T5772] __arm64_sys_openat+0x118/0x14c [ 83.415504][ T5772] invoke_syscall+0x98/0x2b0 [ 83.416269][ T5772] el0_svc_common+0x138/0x258 [ 83.416981][ T5772] do_el0_svc+0x58/0x13c [ 83.417685][ T5772] el0_svc+0x78/0x1d0 [ 83.418315][ T5772] el0t_64_sync_handler+0xcc/0xe4 [ 83.419170][ T5772] el0t_64_sync+0x1a0/0x1a4 [ 83.420620][ T5772] ------------[ cut here ]------------ [ 83.421625][ T5772] WARNING: CPU: 0 PID: 5772 at fs/btrfs/inode.c:6776 btrfs_add_link+0x718/0xa9c [ 83.423007][ T5772] Modules linked in: [ 83.423596][ T5772] CPU: 0 PID: 5772 Comm: syz.0.47 Tainted: G W syzkaller #0 [ 83.424971][ T5772] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/26/2026 [ 83.426632][ T5772] pstate: 62400005 (nZCv daif +PAN -UAO +TCO -DIT -SSBS BTYPE=--) [ 83.427868][ T5772] pc : btrfs_add_link+0x718/0xa9c [ 83.428673][ T5772] lr : btrfs_add_link+0x718/0xa9c [ 83.429554][ T5772] sp : ffff800022717580 [ 83.430234][ T5772] x29: ffff800022717680 x28: ffff0000de375790 x27: 0000000000000108 [ 83.431575][ T5772] x26: 00000000fffffff4 x25: 0000000000000000 x24: dfff800000000000 [ 83.432855][ T5772] x23: 0000000000000014 x22: 1fffe0001bc6eafd x21: ffff7000044e2eb8 [ 83.434165][ T5772] x20: 00000000fffffff4 x19: ffff0000de3757e8 x18: 0000000000000001 [ 83.435437][ T5772] x17: 0000000000000000 x16: ffff800011255484 x15: 00000000ffffffff [ 83.436819][ T5772] x14: 0000000000000001 x13: 1fffe000341f07ab x12: 0000000000ff0100 [ 83.438193][ T5772] x11: 0000000000000000 x10: 0000000000000000 x9 : 341a1c9500c68e00 [ 83.439435][ T5772] x8 : 341a1c9500c68e00 x7 : 0000000000000001 x6 : 0000000000000001 [ 83.440693][ T5772] x5 : ffff800022716e98 x4 : ffff80001436f3e0 x3 : ffff800008508fa8 [ 83.441964][ T5772] x2 : 0000000000000001 x1 : 0000000100000000 x0 : 0000000000000026 [ 83.443247][ T5772] Call trace: [ 83.443781][ T5772] btrfs_add_link+0x718/0xa9c [ 83.444549][ T5772] btrfs_create+0x468/0x514 [ 83.445270][ T5772] path_openat+0xe18/0x2718 [ 83.445959][ T5772] do_filp_open+0x184/0x368 [ 83.446648][ T5772] do_sys_openat2+0x134/0x3f4 [ 83.447450][ T5772] __arm64_sys_openat+0x118/0x14c [ 83.448241][ T5772] invoke_syscall+0x98/0x2b0 [ 83.448925][ T5772] el0_svc_common+0x138/0x258 [ 83.449637][ T5772] do_el0_svc+0x58/0x13c [ 83.450291][ T5772] el0_svc+0x78/0x1d0 [ 83.450874][ T5772] el0t_64_sync_handler+0xcc/0xe4 [ 83.451742][ T5772] el0t_64_sync+0x1a0/0x1a4 [ 83.452484][ T5772] irq event stamp: 81408 [ 83.453154][ T5772] hardirqs last enabled at (81407): [] __up_console_sem+0xb4/0xfc [ 83.454633][ T5772] hardirqs last disabled at (81408): [] el1_dbg+0x24/0x80 [ 83.456023][ T5772] softirqs last enabled at (81388): [] handle_softirqs+0xa40/0xbe4 [ 83.457469][ T5772] softirqs last disabled at (81313): [] __irq_exit_rcu+0x240/0x43c [ 83.458912][ T5772] ---[ end trace e33443594f927306 ]--- [ 83.460880][ T5772] BTRFS: error (device loop0) in btrfs_add_link:6776: errno=-12 Out of memory [ 83.462173][ T5772] BTRFS info (device loop0): forced readonly