Warning: Permanently added '10.128.0.165' (ED25519) to the list of known hosts. 1970/01/01 00:00:49 ignoring optional flag "type"="gce" 1970/01/01 00:00:49 parsed 1 programs [ 49.860302][ T4351] Adding 124996k swap on ./swap-file. Priority:0 extents:1 across:124996k SSFS 1970/01/01 00:00:49 executed programs: 0 [ 49.920796][ T4357] chnl_net:caif_netlink_parms(): no params data found [ 49.937345][ T4357] bridge0: port 1(bridge_slave_0) entered blocking state [ 49.938607][ T4357] bridge0: port 1(bridge_slave_0) entered disabled state [ 49.940420][ T4357] device bridge_slave_0 entered promiscuous mode [ 49.942330][ T4357] bridge0: port 2(bridge_slave_1) entered blocking state [ 49.943495][ T4357] bridge0: port 2(bridge_slave_1) entered disabled state [ 49.944994][ T4357] device bridge_slave_1 entered promiscuous mode [ 49.952023][ T4357] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 49.954417][ T4357] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 49.962061][ T4357] team0: Port device team_slave_0 added [ 49.963849][ T4357] team0: Port device team_slave_1 added [ 49.969927][ T4357] batman_adv: batadv0: Adding interface: batadv_slave_0 [ 49.971130][ T4357] 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. [ 49.975343][ T4357] batman_adv: batadv0: Not using interface batadv_slave_0 (retrying later): interface not active [ 49.977684][ T4357] batman_adv: batadv0: Adding interface: batadv_slave_1 [ 49.978761][ T4357] 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. [ 49.983390][ T4357] batman_adv: batadv0: Not using interface batadv_slave_1 (retrying later): interface not active [ 50.030083][ T4357] device hsr_slave_0 entered promiscuous mode [ 50.089177][ T4357] device hsr_slave_1 entered promiscuous mode [ 50.638058][ T4357] netdevsim netdevsim0 netdevsim0: renamed from eth0 [ 50.680648][ T4357] netdevsim netdevsim0 netdevsim1: renamed from eth1 [ 50.710123][ T4357] netdevsim netdevsim0 netdevsim2: renamed from eth2 [ 50.740588][ T4357] netdevsim netdevsim0 netdevsim3: renamed from eth3 [ 50.785436][ T4357] bridge0: port 2(bridge_slave_1) entered blocking state [ 50.786613][ T4357] bridge0: port 2(bridge_slave_1) entered forwarding state [ 50.787885][ T4357] bridge0: port 1(bridge_slave_0) entered blocking state [ 50.789093][ T4357] bridge0: port 1(bridge_slave_0) entered forwarding state [ 50.805944][ T4357] 8021q: adding VLAN 0 to HW filter on device bond0 [ 50.810067][ T311] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 50.812255][ T311] bridge0: port 1(bridge_slave_0) entered disabled state [ 50.813682][ T311] bridge0: port 2(bridge_slave_1) entered disabled state [ 50.815576][ T311] IPv6: ADDRCONF(NETDEV_CHANGE): bond0: link becomes ready [ 50.819851][ T4357] 8021q: adding VLAN 0 to HW filter on device team0 [ 50.831159][ T311] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 50.832652][ T311] bridge0: port 1(bridge_slave_0) entered blocking state [ 50.833799][ T311] bridge0: port 1(bridge_slave_0) entered forwarding state [ 50.835267][ T311] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 50.840976][ T311] bridge0: port 2(bridge_slave_1) entered blocking state [ 50.842168][ T311] bridge0: port 2(bridge_slave_1) entered forwarding state [ 50.850515][ T1606] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 50.852544][ T1606] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 50.854349][ T1606] IPv6: ADDRCONF(NETDEV_CHANGE): team0: link becomes ready [ 50.858700][ T4357] hsr0: Slave A (hsr_slave_0) is not up; please bring it up to get a fully working HSR network [ 50.861441][ T4357] hsr0: Slave B (hsr_slave_1) is not up; please bring it up to get a fully working HSR network [ 50.865741][ T1606] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 50.867573][ T1606] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 50.870425][ T1606] IPv6: ADDRCONF(NETDEV_CHANGE): hsr0: link becomes ready [ 50.904064][ T311] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan0: link becomes ready [ 50.905329][ T311] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan1: link becomes ready [ 50.908492][ T4357] 8021q: adding VLAN 0 to HW filter on device batadv0 [ 50.915011][ T1606] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_virt_wifi: link becomes ready [ 50.916710][ T1606] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_virt_wifi: link becomes ready [ 50.928549][ T4357] device veth0_vlan entered promiscuous mode [ 50.930536][ T311] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_vlan: link becomes ready [ 50.932217][ T311] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_vlan: link becomes ready [ 50.933815][ T311] IPv6: ADDRCONF(NETDEV_CHANGE): vlan0: link becomes ready [ 50.935354][ T311] IPv6: ADDRCONF(NETDEV_CHANGE): vlan1: link becomes ready [ 50.940756][ T4357] device veth1_vlan entered promiscuous mode [ 50.947811][ T311] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan0: link becomes ready [ 50.950029][ T311] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan1: link becomes ready [ 50.951704][ T311] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_macvtap: link becomes ready [ 50.953666][ T311] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_macvtap: link becomes ready [ 50.956724][ T4357] device veth0_macvtap entered promiscuous mode [ 50.959527][ T4357] device veth1_macvtap entered promiscuous mode [ 50.964815][ T4357] batman_adv: batadv0: Interface activated: batadv_slave_0 [ 50.966013][ T311] IPv6: ADDRCONF(NETDEV_CHANGE): macvtap0: link becomes ready [ 50.967884][ T311] IPv6: ADDRCONF(NETDEV_CHANGE): macsec0: link becomes ready [ 50.971480][ T311] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_0: link becomes ready [ 50.973138][ T311] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_batadv: link becomes ready [ 50.976484][ T4357] batman_adv: batadv0: Interface activated: batadv_slave_1 [ 50.978119][ T311] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_1: link becomes ready [ 50.980470][ T311] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_batadv: link becomes ready [ 50.982873][ T4357] netdevsim netdevsim0 netdevsim0: set [1, 0] type 2 family 0 port 6081 - 0 [ 50.984261][ T4357] netdevsim netdevsim0 netdevsim1: set [1, 0] type 2 family 0 port 6081 - 0 [ 50.985723][ T4357] netdevsim netdevsim0 netdevsim2: set [1, 0] type 2 family 0 port 6081 - 0 [ 50.987142][ T4357] netdevsim netdevsim0 netdevsim3: set [1, 0] type 2 family 0 port 6081 - 0 [ 51.131151][ T4477] loop0: detected capacity change from 0 to 32768 [ 51.143462][ T4477] BTRFS: device fsid ed167579-eb65-4e76-9a50-61ac97e9b59d devid 1 transid 8 /dev/loop0 scanned by syz-executor.0 (4477) [ 51.158292][ T4477] BTRFS info (device loop0): using sha256 (sha256-ce) checksum algorithm [ 51.163833][ T4477] BTRFS info (device loop0): turning on flush-on-commit [ 51.165084][ T4477] BTRFS info (device loop0): using default commit interval 30s [ 51.166361][ T4477] BTRFS info (device loop0): force clearing of disk cache [ 51.167604][ T4477] BTRFS info (device loop0): force zlib compression, level 3 [ 51.169970][ T4477] BTRFS info (device loop0): enabling disk space caching [ 51.171123][ T4477] BTRFS info (device loop0): disk space caching is enabled [ 51.172380][ T4477] BTRFS info (device loop0): has skinny extents [ 51.223208][ T4477] BTRFS info (device loop0): enabling ssd optimizations [ 51.239495][ T4477] ======================================================= [ 51.239495][ T4477] WARNING: The mand mount option has been deprecated and [ 51.239495][ T4477] and is ignored by this kernel. Remove the mand [ 51.239495][ T4477] option from the mount to silence this warning. [ 51.239495][ T4477] ======================================================= [ 51.247409][ T4477] BTRFS info (device loop0): using default commit interval 30s [ 51.250847][ T4477] BTRFS info (device loop0): force clearing of disk cache [ 51.260232][ T4477] BTRFS info (device loop0): clearing free space tree [ 51.261544][ T4477] FAULT_INJECTION: forcing a failure. [ 51.261544][ T4477] name fail_page_alloc, interval 1, probability 0, space 0, times 1 [ 51.264589][ T4477] CPU: 1 PID: 4477 Comm: syz-executor.0 Not tainted syzkaller #0 [ 51.265839][ T4477] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/18/2026 [ 51.267517][ T4477] Call trace: [ 51.268129][ T4477] dump_backtrace+0x0/0x458 [ 51.268902][ T4477] show_stack+0x2c/0x3c [ 51.269581][ T4477] __dump_stack+0x30/0x40 [ 51.270317][ T4477] dump_stack_lvl+0xf4/0x15c [ 51.271094][ T4477] dump_stack+0x1c/0x5c [ 51.271798][ T4477] should_fail+0x3bc/0x514 [ 51.272578][ T4477] should_fail_alloc_page+0x74/0xa8 [ 51.273451][ T4477] prepare_alloc_pages+0x160/0x45c [ 51.274274][ T4477] __alloc_pages+0x108/0x470 [ 51.275059][ T4477] alloc_pages+0x34c/0x5c0 [ 51.275772][ T4477] new_slab+0xe0/0x544 [ 51.276428][ T4477] ___slab_alloc+0x6b4/0xd8c [ 51.277164][ T4477] __slab_alloc+0x68/0xc0 [ 51.277929][ T4477] kmem_cache_alloc+0x2a4/0x3d4 [ 51.278736][ T4477] start_transaction+0x4d0/0x13ec [ 51.279614][ T4477] btrfs_start_transaction+0x34/0x44 [ 51.280508][ T4477] btrfs_clear_free_space_tree+0xc4/0x9f0 [ 51.281489][ T4477] btrfs_start_pre_rw_mount+0x240/0x568 [ 51.282420][ T4477] btrfs_remount+0xab0/0x12b0 [ 51.283269][ T4477] legacy_reconfigure+0xf8/0x110 [ 51.284101][ T4477] reconfigure_super+0x1d4/0x6f4 [ 51.284946][ T4477] path_mount+0xc88/0x1008 [ 51.285776][ T4477] __arm64_sys_mount+0x514/0x5f0 [ 51.286556][ T4477] invoke_syscall+0x98/0x2b0 [ 51.287307][ T4477] el0_svc_common+0x138/0x258 [ 51.288033][ T4477] do_el0_svc+0x58/0x13c [ 51.288726][ T4477] el0_svc+0x78/0x1d0 [ 51.289418][ T4477] el0t_64_sync_handler+0xcc/0xe4 [ 51.290203][ T4477] el0t_64_sync+0x1a0/0x1a4 [ 51.295722][ T4477] BTRFS info (device loop0): clearing compat-ro feature flag for FREE_SPACE_TREE (0x1) [ 51.297536][ T4477] BTRFS info (device loop0): clearing compat-ro feature flag for FREE_SPACE_TREE_VALID (0x2) [ 51.511335][ T4553] loop0: detected capacity change from 0 to 32768 [ 51.522593][ T4553] BTRFS: device fsid ed167579-eb65-4e76-9a50-61ac97e9b59d devid 1 transid 8 /dev/loop0 scanned by syz-executor.0 (4553) [ 51.533643][ T4553] BTRFS info (device loop0): using sha256 (sha256-ce) checksum algorithm [ 51.535216][ T4553] BTRFS info (device loop0): turning on flush-on-commit [ 51.536398][ T4553] BTRFS info (device loop0): using default commit interval 30s [ 51.540678][ T4553] BTRFS info (device loop0): force clearing of disk cache [ 51.541970][ T4553] BTRFS info (device loop0): force zlib compression, level 3 [ 51.549438][ T4553] BTRFS info (device loop0): enabling disk space caching [ 51.550655][ T4553] BTRFS info (device loop0): disk space caching is enabled [ 51.551902][ T4553] BTRFS info (device loop0): has skinny extents [ 51.597511][ T4553] BTRFS info (device loop0): enabling ssd optimizations [ 51.606259][ T4553] BTRFS info (device loop0): using default commit interval 30s [ 51.607702][ T4553] BTRFS info (device loop0): force clearing of disk cache [ 51.613463][ T4553] BTRFS info (device loop0): clearing free space tree [ 51.614700][ T4553] FAULT_INJECTION: forcing a failure. [ 51.614700][ T4553] name failslab, interval 1, probability 0, space 0, times 1 [ 51.622366][ T4553] CPU: 0 PID: 4553 Comm: syz-executor.0 Not tainted syzkaller #0 [ 51.623522][ T4553] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/18/2026 [ 51.625167][ T4553] Call trace: [ 51.625718][ T4553] dump_backtrace+0x0/0x458 [ 51.626510][ T4553] show_stack+0x2c/0x3c [ 51.627183][ T4553] __dump_stack+0x30/0x40 [ 51.627946][ T4553] dump_stack_lvl+0xf4/0x15c [ 51.628720][ T4553] dump_stack+0x1c/0x5c [ 51.629432][ T4553] should_fail+0x3bc/0x514 [ 51.630190][ T4553] __should_failslab+0xbc/0x10c [ 51.630972][ T4553] should_failslab+0x10/0x28 [ 51.631757][ T4553] slab_pre_alloc_hook+0x64/0xe8 [ 51.632592][ T4553] kmem_cache_alloc+0x94/0x3d4 [ 51.633379][ T4553] start_transaction+0x4d0/0x13ec [ 51.634275][ T4553] btrfs_start_transaction+0x34/0x44 [ 51.635213][ T4553] btrfs_clear_free_space_tree+0xc4/0x9f0 [ 51.636099][ T4553] btrfs_start_pre_rw_mount+0x240/0x568 [ 51.636985][ T4553] btrfs_remount+0xab0/0x12b0 [ 51.637773][ T4553] legacy_reconfigure+0xf8/0x110 [ 51.638564][ T4553] reconfigure_super+0x1d4/0x6f4 [ 51.639355][ T4553] path_mount+0xc88/0x1008 [ 51.640053][ T4553] __arm64_sys_mount+0x514/0x5f0 [ 51.640872][ T4553] invoke_syscall+0x98/0x2b0 [ 51.641603][ T4553] el0_svc_common+0x138/0x258 [ 51.642365][ T4553] do_el0_svc+0x58/0x13c [ 51.643062][ T4553] el0_svc+0x78/0x1d0 [ 51.643761][ T4553] el0t_64_sync_handler+0xcc/0xe4 [ 51.644628][ T4553] el0t_64_sync+0x1a0/0x1a4 [ 51.646851][ T4553] BTRFS warning (device loop0): failed to clear free space tree: -12 [ 51.830426][ T4613] loop0: detected capacity change from 0 to 32768 [ 51.860954][ T4613] BTRFS: device fsid ed167579-eb65-4e76-9a50-61ac97e9b59d devid 1 transid 8 /dev/loop0 scanned by syz-executor.0 (4613) [ 51.893088][ T4613] BTRFS info (device loop0): using sha256 (sha256-ce) checksum algorithm [ 51.894547][ T4613] BTRFS info (device loop0): turning on flush-on-commit [ 51.895733][ T4613] BTRFS info (device loop0): using default commit interval 30s [ 51.896991][ T4613] BTRFS info (device loop0): force clearing of disk cache [ 51.898248][ T4613] BTRFS info (device loop0): force zlib compression, level 3 [ 51.907579][ T4613] BTRFS info (device loop0): enabling disk space caching [ 51.908758][ T4613] BTRFS info (device loop0): disk space caching is enabled [ 51.910428][ T4613] BTRFS info (device loop0): has skinny extents [ 51.949221][ T3623] Bluetooth: hci0: command 0x0409 tx timeout [ 51.956712][ T4613] BTRFS info (device loop0): enabling ssd optimizations [ 51.961061][ T4613] BTRFS info (device loop0): using default commit interval 30s [ 51.962487][ T4613] BTRFS info (device loop0): force clearing of disk cache [ 51.963729][ T4613] BTRFS info (device loop0): clearing free space tree [ 51.965034][ T4613] BTRFS info (device loop0): clearing compat-ro feature flag for FREE_SPACE_TREE (0x1) [ 51.966614][ T4613] BTRFS info (device loop0): clearing compat-ro feature flag for FREE_SPACE_TREE_VALID (0x2) [ 51.968338][ T4613] FAULT_INJECTION: forcing a failure. [ 51.968338][ T4613] name failslab, interval 1, probability 0, space 0, times 0 [ 51.979333][ T4613] CPU: 0 PID: 4613 Comm: syz-executor.0 Not tainted syzkaller #0 [ 51.980721][ T4613] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/18/2026 [ 51.982514][ T4613] Call trace: [ 51.983068][ T4613] dump_backtrace+0x0/0x458 [ 51.983846][ T4613] show_stack+0x2c/0x3c [ 51.984588][ T4613] __dump_stack+0x30/0x40 [ 51.985316][ T4613] dump_stack_lvl+0xf4/0x15c [ 51.986135][ T4613] dump_stack+0x1c/0x5c [ 51.986830][ T4613] should_fail+0x3bc/0x514 [ 51.987559][ T4613] __should_failslab+0xbc/0x10c [ 51.988365][ T4613] should_failslab+0x10/0x28 [ 51.989088][ T4613] slab_pre_alloc_hook+0x64/0xe8 [ 51.989890][ T4613] kmem_cache_alloc+0x94/0x3d4 [ 51.990667][ T4613] btrfs_alloc_path+0x5c/0x68 [ 51.991439][ T4613] btrfs_clear_free_space_tree+0x24c/0x9f0 [ 51.992358][ T4613] btrfs_start_pre_rw_mount+0x240/0x568 [ 51.993247][ T4613] btrfs_remount+0xab0/0x12b0 [ 51.994024][ T4613] legacy_reconfigure+0xf8/0x110 [ 51.994845][ T4613] reconfigure_super+0x1d4/0x6f4 [ 51.995620][ T4613] path_mount+0xc88/0x1008 [ 51.996447][ T4613] __arm64_sys_mount+0x514/0x5f0 [ 51.997316][ T4613] invoke_syscall+0x98/0x2b0 [ 51.998063][ T4613] el0_svc_common+0x138/0x258 [ 51.998832][ T4613] do_el0_svc+0x58/0x13c [ 51.999545][ T4613] el0_svc+0x78/0x1d0 [ 52.000236][ T4613] el0t_64_sync_handler+0xcc/0xe4 [ 52.001092][ T4613] el0t_64_sync+0x1a0/0x1a4 [ 52.003771][ T4613] ------------[ cut here ]------------ [ 52.005100][ T4613] WARNING: CPU: 0 PID: 4613 at fs/btrfs/free-space-tree.c:1267 btrfs_clear_free_space_tree+0x6f4/0x9f0 [ 52.006989][ T4613] Modules linked in: [ 52.007625][ T4613] CPU: 0 PID: 4613 Comm: syz-executor.0 Not tainted syzkaller #0 [ 52.008860][ T4613] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/18/2026 [ 52.010464][ T4613] pstate: 62400005 (nZCv daif +PAN -UAO +TCO -DIT -SSBS BTYPE=--) [ 52.011776][ T4613] pc : btrfs_clear_free_space_tree+0x6f4/0x9f0 [ 52.012756][ T4613] lr : btrfs_clear_free_space_tree+0x6f4/0x9f0 [ 52.013816][ T4613] sp : ffff80001f1377a0 [ 52.014510][ T4613] x29: ffff80001f137850 x28: 1fffe000194298d3 x27: ffff700003e26ef8 [ 52.015959][ T4613] x26: dfff800000000000 x25: 0000000000000000 x24: 0000000000000006 [ 52.017407][ T4613] x23: 1fffe0001bda9c21 x22: ffff0000ca14d9d0 x21: ffff0000ded4e108 [ 52.018787][ T4613] x20: 00000000fffffff4 x19: ffff0000ded4e0b0 x18: 0000000000000001 [ 52.020101][ T4613] x17: 0000000000000000 x16: ffff80001125f22c x15: 00000000ffffffff [ 52.021325][ T4613] x14: 0000000000000001 x13: 1fffe000341f05ab x12: 0000000000ff0100 [ 52.022737][ T4613] x11: 0000000000000000 x10: 0000000000000000 x9 : 109999a5080e8800 [ 52.024116][ T4613] x8 : 109999a5080e8800 x7 : 0000000000000001 x6 : 0000000000000001 [ 52.025526][ T4613] x5 : ffff80001f1370b8 x4 : ffff80001437f3e0 x3 : ffff80000850932c [ 52.026907][ T4613] x2 : 0000000000000001 x1 : 0000000100000000 x0 : 0000000000000026 [ 52.028282][ T4613] Call trace: [ 52.028830][ T4613] btrfs_clear_free_space_tree+0x6f4/0x9f0 [ 52.029801][ T4613] btrfs_start_pre_rw_mount+0x240/0x568 [ 52.030669][ T4613] btrfs_remount+0xab0/0x12b0 [ 52.031403][ T4613] legacy_reconfigure+0xf8/0x110 [ 52.032185][ T4613] reconfigure_super+0x1d4/0x6f4 [ 52.033026][ T4613] path_mount+0xc88/0x1008 [ 52.033807][ T4613] __arm64_sys_mount+0x514/0x5f0 [ 52.034669][ T4613] invoke_syscall+0x98/0x2b0 [ 52.035441][ T4613] el0_svc_common+0x138/0x258 [ 52.036196][ T4613] do_el0_svc+0x58/0x13c [ 52.036890][ T4613] el0_svc+0x78/0x1d0 [ 52.037569][ T4613] el0t_64_sync_handler+0xcc/0xe4 [ 52.038432][ T4613] el0t_64_sync+0x1a0/0x1a4 [ 52.039205][ T4613] irq event stamp: 80056 [ 52.039909][ T4613] hardirqs last enabled at (80055): [] __up_console_sem+0xb4/0xfc [ 52.041494][ T4613] hardirqs last disabled at (80056): [] el1_dbg+0x24/0x80 [ 52.042958][ T4613] softirqs last enabled at (80032): [] handle_softirqs+0xa40/0xbe4 [ 52.044646][ T4613] softirqs last disabled at (80005): [] __irq_exit_rcu+0x240/0x43c [ 52.046220][ T4613] ---[ end trace a09f62afa63081b2 ]--- [ 52.050590][ T4613] BTRFS: error (device loop0) in btrfs_clear_free_space_tree:1267: errno=-12 Out of memory [ 52.053466][ T4613] BTRFS warning (device loop0): failed to clear free space tree: -12 [ 52.070424][ T4357] BTRFS warning (device loop0): page private not zero on page 5341184 [ 52.235698][ T4689] loop0: detected capacity change from 0 to 32768 [ 52.283871][ T4689] BTRFS: device fsid ed167579-eb65-4e76-9a50-61ac97e9b59d devid 1 transid 8 /dev/loop0 scanned by syz-executor.0 (4689) [ 52.289906][ T4689] BTRFS info (device loop0): using sha256 (sha256-ce) checksum algorithm [ 52.291385][ T4689] BTRFS info (device loop0): turning on flush-on-commit [ 52.292591][ T4689] BTRFS info (device loop0): using default commit interval 30s [ 52.293803][ T4689] BTRFS info (device loop0): force clearing of disk cache [ 52.294962][ T4689] BTRFS info (device loop0): force zlib compression, level 3 [ 52.296109][ T4689] BTRFS info (device loop0): enabling disk space caching [ 52.297290][ T4689] BTRFS info (device loop0): disk space caching is enabled [ 52.298462][ T4689] BTRFS info (device loop0): has skinny extents [ 52.339873][ T4689] BTRFS info (device loop0): enabling ssd optimizations [ 52.343153][ T4689] BTRFS info (device loop0): using default commit interval 30s [ 52.344495][ T4689] BTRFS info (device loop0): force clearing of disk cache [ 52.347875][ T4689] BTRFS info (device loop0): clearing free space tree [ 52.349752][ T4689] FAULT_INJECTION: forcing a failure. [ 52.349752][ T4689] name failslab, interval 1, probability 0, space 0, times 0 [ 52.352597][ T4689] CPU: 0 PID: 4689 Comm: syz-executor.0 Tainted: G W syzkaller #0 [ 52.354058][ T4689] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/18/2026 [ 52.355832][ T4689] Call trace: [ 52.356378][ T4689] dump_backtrace+0x0/0x458 [ 52.357120][ T4689] show_stack+0x2c/0x3c [ 52.357835][ T4689] __dump_stack+0x30/0x40 [ 52.358556][ T4689] dump_stack_lvl+0xf4/0x15c [ 52.359298][ T4689] dump_stack+0x1c/0x5c [ 52.360017][ T4689] should_fail+0x3bc/0x514 [ 52.360820][ T4689] __should_failslab+0xbc/0x10c [ 52.361633][ T4689] should_failslab+0x10/0x28 [ 52.362393][ T4689] slab_pre_alloc_hook+0x64/0xe8 [ 52.363213][ T4689] kmem_cache_alloc_trace+0x98/0x3ec [ 52.364118][ T4689] join_transaction+0x10c/0xa5c [ 52.364928][ T4689] start_transaction+0x914/0x13ec [ 52.365789][ T4689] btrfs_start_transaction+0x34/0x44 [ 52.366701][ T4689] btrfs_clear_free_space_tree+0xc4/0x9f0 [ 52.367663][ T4689] btrfs_start_pre_rw_mount+0x240/0x568 [ 52.368594][ T4689] btrfs_remount+0xab0/0x12b0 [ 52.369380][ T4689] legacy_reconfigure+0xf8/0x110 [ 52.370232][ T4689] reconfigure_super+0x1d4/0x6f4 [ 52.371013][ T4689] path_mount+0xc88/0x1008 [ 52.371716][ T4689] __arm64_sys_mount+0x514/0x5f0 [ 52.372598][ T4689] invoke_syscall+0x98/0x2b0 [ 52.373295][ T4689] el0_svc_common+0x138/0x258 [ 52.374080][ T4689] do_el0_svc+0x58/0x13c [ 52.374761][ T4689] el0_svc+0x78/0x1d0 [ 52.375388][ T4689] el0t_64_sync_handler+0xcc/0xe4 [ 52.376189][ T4689] el0t_64_sync+0x1a0/0x1a4 [ 52.385473][ T4689] BTRFS warning (device loop0): failed to clear free space tree: -12 [ 52.556884][ T4739] loop0: detected capacity change from 0 to 32768 [ 52.592345][ T4739] BTRFS: device fsid ed167579-eb65-4e76-9a50-61ac97e9b59d devid 1 transid 8 /dev/loop0 scanned by syz-executor.0 (4739) [ 52.599907][ T4739] BTRFS info (device loop0): using sha256 (sha256-ce) checksum algorithm [ 52.601505][ T4739] BTRFS info (device loop0): turning on flush-on-commit [ 52.602703][ T4739] BTRFS info (device loop0): using default commit interval 30s [ 52.604024][ T4739] BTRFS info (device loop0): force clearing of disk cache [ 52.605313][ T4739] BTRFS info (device loop0): force zlib compression, level 3 [ 52.609346][ T4739] BTRFS info (device loop0): enabling disk space caching [ 52.610589][ T4739] BTRFS info (device loop0): disk space caching is enabled [ 52.611872][ T4739] BTRFS info (device loop0): has skinny extents [ 52.677984][ T4739] BTRFS info (device loop0): enabling ssd optimizations [ 52.681781][ T4739] BTRFS info (device loop0): using default commit interval 30s [ 52.683188][ T4739] BTRFS info (device loop0): force clearing of disk cache [ 52.684461][ T4739] BTRFS info (device loop0): clearing free space tree [ 52.685638][ T4739] FAULT_INJECTION: forcing a failure. [ 52.685638][ T4739] name failslab, interval 1, probability 0, space 0, times 0 [ 52.696133][ T4739] CPU: 0 PID: 4739 Comm: syz-executor.0 Tainted: G W syzkaller #0 [ 52.697620][ T4739] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/18/2026 [ 52.699475][ T4739] Call trace: [ 52.700133][ T4739] dump_backtrace+0x0/0x458 [ 52.700894][ T4739] show_stack+0x2c/0x3c [ 52.701577][ T4739] __dump_stack+0x30/0x40 [ 52.702307][ T4739] dump_stack_lvl+0xf4/0x15c [ 52.703063][ T4739] dump_stack+0x1c/0x5c [ 52.703770][ T4739] should_fail+0x3bc/0x514 [ 52.704574][ T4739] __should_failslab+0xbc/0x10c [ 52.705405][ T4739] should_failslab+0x10/0x28 [ 52.706164][ T4739] slab_pre_alloc_hook+0x64/0xe8 [ 52.706971][ T4739] kmem_cache_alloc+0x94/0x3d4 [ 52.707769][ T4739] start_transaction+0x4d0/0x13ec [ 52.708688][ T4739] btrfs_start_transaction+0x34/0x44 [ 52.709548][ T4739] btrfs_clear_free_space_tree+0xc4/0x9f0 [ 52.710422][ T4739] btrfs_start_pre_rw_mount+0x240/0x568 [ 52.711351][ T4739] btrfs_remount+0xab0/0x12b0 [ 52.712130][ T4739] legacy_reconfigure+0xf8/0x110 [ 52.712964][ T4739] reconfigure_super+0x1d4/0x6f4 [ 52.713780][ T4739] path_mount+0xc88/0x1008 [ 52.714519][ T4739] __arm64_sys_mount+0x514/0x5f0 [ 52.715322][ T4739] invoke_syscall+0x98/0x2b0 [ 52.716052][ T4739] el0_svc_common+0x138/0x258 [ 52.716804][ T4739] do_el0_svc+0x58/0x13c [ 52.717511][ T4739] el0_svc+0x78/0x1d0 [ 52.718164][ T4739] el0t_64_sync_handler+0xcc/0xe4 [ 52.718978][ T4739] el0t_64_sync+0x1a0/0x1a4 [ 52.720586][ T4739] BTRFS warning (device loop0): failed to clear free space tree: -12 [ 52.908175][ T4798] loop0: detected capacity change from 0 to 32768 [ 52.919110][ T4798] BTRFS: device fsid ed167579-eb65-4e76-9a50-61ac97e9b59d devid 1 transid 8 /dev/loop0 scanned by syz-executor.0 (4798) [ 52.924767][ T4798] BTRFS info (device loop0): using sha256 (sha256-ce) checksum algorithm [ 52.926109][ T4798] BTRFS info (device loop0): turning on flush-on-commit [ 52.927319][ T4798] BTRFS info (device loop0): using default commit interval 30s [ 52.928613][ T4798] BTRFS info (device loop0): force clearing of disk cache [ 52.930226][ T4798] BTRFS info (device loop0): force zlib compression, level 3 [ 52.931389][ T4798] BTRFS info (device loop0): enabling disk space caching [ 52.932603][ T4798] BTRFS info (device loop0): disk space caching is enabled [ 52.933880][ T4798] BTRFS info (device loop0): has skinny extents [ 52.985315][ T4798] BTRFS info (device loop0): enabling ssd optimizations [ 52.993962][ T4798] BTRFS info (device loop0): using default commit interval 30s [ 52.995253][ T4798] BTRFS info (device loop0): force clearing of disk cache [ 52.996548][ T4798] BTRFS info (device loop0): clearing free space tree [ 52.997790][ T4798] FAULT_INJECTION: forcing a failure. [ 52.997790][ T4798] name failslab, interval 1, probability 0, space 0, times 0 [ 53.000379][ T4798] CPU: 1 PID: 4798 Comm: syz-executor.0 Tainted: G W syzkaller #0 [ 53.001886][ T4798] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/18/2026 [ 53.003606][ T4798] Call trace: [ 53.004121][ T4798] dump_backtrace+0x0/0x458 [ 53.004859][ T4798] show_stack+0x2c/0x3c [ 53.005539][ T4798] __dump_stack+0x30/0x40 [ 53.006267][ T4798] dump_stack_lvl+0xf4/0x15c [ 53.007035][ T4798] dump_stack+0x1c/0x5c [ 53.007799][ T4798] should_fail+0x3bc/0x514 [ 53.008516][ T4798] __should_failslab+0xbc/0x10c [ 53.009384][ T4798] should_failslab+0x10/0x28 [ 53.010142][ T4798] slab_pre_alloc_hook+0x64/0xe8 [ 53.010965][ T4798] kmem_cache_alloc_trace+0x98/0x3ec [ 53.011842][ T4798] join_transaction+0x10c/0xa5c [ 53.012696][ T4798] start_transaction+0x914/0x13ec [ 53.013552][ T4798] btrfs_start_transaction+0x34/0x44 [ 53.014464][ T4798] btrfs_clear_free_space_tree+0xc4/0x9f0 [ 53.015480][ T4798] btrfs_start_pre_rw_mount+0x240/0x568 [ 53.016451][ T4798] btrfs_remount+0xab0/0x12b0 [ 53.017250][ T4798] legacy_reconfigure+0xf8/0x110 [ 53.018075][ T4798] reconfigure_super+0x1d4/0x6f4 [ 53.018950][ T4798] path_mount+0xc88/0x1008 [ 53.019663][ T4798] __arm64_sys_mount+0x514/0x5f0 [ 53.020438][ T4798] invoke_syscall+0x98/0x2b0 [ 53.021188][ T4798] el0_svc_common+0x138/0x258 [ 53.021957][ T4798] do_el0_svc+0x58/0x13c [ 53.022677][ T4798] el0_svc+0x78/0x1d0 [ 53.023330][ T4798] el0t_64_sync_handler+0xcc/0xe4 [ 53.024109][ T4798] el0t_64_sync+0x1a0/0x1a4 [ 53.025004][ T4798] BTRFS warning (device loop0): failed to clear free space tree: -12 [ 53.167210][ T4846] loop0: detected capacity change from 0 to 32768 [ 53.207536][ T4846] BTRFS: device fsid ed167579-eb65-4e76-9a50-61ac97e9b59d devid 1 transid 8 /dev/loop0 scanned by syz-executor.0 (4846) [ 53.214168][ T4846] BTRFS info (device loop0): using sha256 (sha256-ce) checksum algorithm [ 53.215668][ T4846] BTRFS info (device loop0): turning on flush-on-commit [ 53.216946][ T4846] BTRFS info (device loop0): using default commit interval 30s [ 53.218250][ T4846] BTRFS info (device loop0): force clearing of disk cache [ 53.219582][ T4846] BTRFS info (device loop0): force zlib compression, level 3 [ 53.220748][ T4846] BTRFS info (device loop0): enabling disk space caching [ 53.221906][ T4846] BTRFS info (device loop0): disk space caching is enabled [ 53.223113][ T4846] BTRFS info (device loop0): has skinny extents [ 53.232638][ T4846] BTRFS info (device loop0): enabling ssd optimizations [ 53.235451][ T4846] FAULT_INJECTION: forcing a failure. [ 53.235451][ T4846] name failslab, interval 1, probability 0, space 0, times 0 [ 53.237609][ T4846] CPU: 1 PID: 4846 Comm: syz-executor.0 Tainted: G W syzkaller #0 [ 53.239177][ T4846] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/18/2026 [ 53.240883][ T4846] Call trace: [ 53.241406][ T4846] dump_backtrace+0x0/0x458 [ 53.242211][ T4846] show_stack+0x2c/0x3c [ 53.242835][ T4846] __dump_stack+0x30/0x40 [ 53.243598][ T4846] dump_stack_lvl+0xf4/0x15c [ 53.244394][ T4846] dump_stack+0x1c/0x5c [ 53.245149][ T4846] should_fail+0x3bc/0x514 [ 53.245913][ T4846] __should_failslab+0xbc/0x10c [ 53.246793][ T4846] should_failslab+0x10/0x28 [ 53.247575][ T4846] slab_pre_alloc_hook+0x64/0xe8 [ 53.248412][ T4846] __kmalloc_track_caller+0x70/0x358 [ 53.249293][ T4846] kmemdup_nul+0xdc/0x18c [ 53.250008][ T4846] match_int+0xc0/0x1ac [ 53.250748][ T4846] btrfs_parse_options+0x8fc/0x2a98 [ 53.251510][ T4846] btrfs_remount+0x300/0x12b0 [ 53.252341][ T4846] legacy_reconfigure+0xf8/0x110 [ 53.253152][ T4846] reconfigure_super+0x1d4/0x6f4 [ 53.253912][ T4846] path_mount+0xc88/0x1008 [ 53.254681][ T4846] __arm64_sys_mount+0x514/0x5f0 [ 53.255468][ T4846] invoke_syscall+0x98/0x2b0 [ 53.256266][ T4846] el0_svc_common+0x138/0x258 [ 53.256962][ T4846] do_el0_svc+0x58/0x13c [ 53.257667][ T4846] el0_svc+0x78/0x1d0 [ 53.258339][ T4846] el0t_64_sync_handler+0xcc/0xe4 [ 53.259221][ T4846] el0t_64_sync+0x1a0/0x1a4 [ 53.260935][ T4846] BTRFS error (device loop0): unrecognized commit_interval value 0x0000000000000000 [ 53.303561][ T4361] BTRFS: device fsid ed167579-eb65-4e76-9a50-61ac97e9b59d devid 1 transid 9 /dev/loop0 scanned by udevd (4361) [ 53.401469][ T4867] loop0: detected capacity change from 0 to 32768 [ 53.520632][ T4867] BTRFS info (device loop0): using sha256 (sha256-ce) checksum algorithm [ 53.522055][ T4867] BTRFS info (device loop0): turning on flush-on-commit [ 53.523185][ T4867] BTRFS info (device loop0): using default commit interval 30s [ 53.524370][ T4867] BTRFS info (device loop0): force clearing of disk cache [ 53.525509][ T4867] BTRFS info (device loop0): force zlib compression, level 3 [ 53.526766][ T4867] BTRFS info (device loop0): enabling disk space caching [ 53.527913][ T4867] BTRFS info (device loop0): disk space caching is enabled [ 53.529854][ T4867] BTRFS info (device loop0): has skinny extents [ 53.536855][ T4867] BTRFS info (device loop0): enabling ssd optimizations [ 53.540179][ T4867] BTRFS info (device loop0): using default commit interval 30s [ 53.541431][ T4867] BTRFS info (device loop0): force clearing of disk cache [ 53.542552][ T4867] BTRFS info (device loop0): clearing free space tree [ 53.543612][ T4867] FAULT_INJECTION: forcing a failure. [ 53.543612][ T4867] name failslab, interval 1, probability 0, space 0, times 0 [ 53.545667][ T4867] CPU: 0 PID: 4867 Comm: syz-executor.0 Tainted: G W syzkaller #0 [ 53.547121][ T4867] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/18/2026 [ 53.548814][ T4867] Call trace: [ 53.549352][ T4867] dump_backtrace+0x0/0x458 [ 53.550080][ T4867] show_stack+0x2c/0x3c [ 53.550728][ T4867] __dump_stack+0x30/0x40 [ 53.551449][ T4867] dump_stack_lvl+0xf4/0x15c [ 53.552228][ T4867] dump_stack+0x1c/0x5c [ 53.553006][ T4867] should_fail+0x3bc/0x514 [ 53.553762][ T4867] __should_failslab+0xbc/0x10c [ 53.554530][ T4867] should_failslab+0x10/0x28 [ 53.555250][ T4867] slab_pre_alloc_hook+0x64/0xe8 [ 53.556056][ T4867] kmem_cache_alloc_trace+0x98/0x3ec [ 53.556911][ T4867] join_transaction+0x10c/0xa5c [ 53.557697][ T4867] start_transaction+0x914/0x13ec [ 53.558524][ T4867] btrfs_start_transaction+0x34/0x44 [ 53.559367][ T4867] btrfs_clear_free_space_tree+0xc4/0x9f0 [ 53.560317][ T4867] btrfs_start_pre_rw_mount+0x240/0x568 [ 53.561275][ T4867] btrfs_remount+0xab0/0x12b0 [ 53.562029][ T4867] legacy_reconfigure+0xf8/0x110 [ 53.562861][ T4867] reconfigure_super+0x1d4/0x6f4 [ 53.563673][ T4867] path_mount+0xc88/0x1008 [ 53.564447][ T4867] __arm64_sys_mount+0x514/0x5f0 [ 53.565355][ T4867] invoke_syscall+0x98/0x2b0 [ 53.566092][ T4867] el0_svc_common+0x138/0x258 [ 53.566882][ T4867] do_el0_svc+0x58/0x13c [ 53.567636][ T4867] el0_svc+0x78/0x1d0 [ 53.568326][ T4867] el0t_64_sync_handler+0xcc/0xe4 [ 53.569160][ T4867] el0t_64_sync+0x1a0/0x1a4 [ 53.571959][ T4867] BTRFS warning (device loop0): failed to clear free space tree: -12 [ 53.705355][ T4891] loop0: detected capacity change from 0 to 32768 [ 53.780089][ T4891] BTRFS: device fsid ed167579-eb65-4e76-9a50-61ac97e9b59d devid 1 transid 8 /dev/loop0 scanned by syz-executor.0 (4891) [ 53.822791][ T4891] BTRFS info (device loop0): using sha256 (sha256-ce) checksum algorithm [ 53.824454][ T4891] BTRFS info (device loop0): turning on flush-on-commit [ 53.825660][ T4891] BTRFS info (device loop0): using default commit interval 30s [ 53.835423][ T4891] FAULT_INJECTION: forcing a failure. [ 53.835423][ T4891] name failslab, interval 1, probability 0, space 0, times 0 [ 53.837562][ T4891] CPU: 1 PID: 4891 Comm: syz-executor.0 Tainted: G W syzkaller #0 [ 53.839096][ T4891] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/18/2026 [ 53.840882][ T4891] Call trace: [ 53.841457][ T4891] dump_backtrace+0x0/0x458 [ 53.842205][ T4891] show_stack+0x2c/0x3c [ 53.842909][ T4891] __dump_stack+0x30/0x40 [ 53.843641][ T4891] dump_stack_lvl+0xf4/0x15c [ 53.844402][ T4891] dump_stack+0x1c/0x5c [ 53.845092][ T4891] should_fail+0x3bc/0x514 [ 53.845923][ T4891] __should_failslab+0xbc/0x10c [ 53.846758][ T4891] should_failslab+0x10/0x28 [ 53.847577][ T4891] slab_pre_alloc_hook+0x64/0xe8 [ 53.848456][ T4891] kmem_cache_alloc_trace+0x98/0x3ec [ 53.849377][ T4891] join_transaction+0x10c/0xa5c [ 53.850212][ T4891] start_transaction+0x914/0x13ec [ 53.851082][ T4891] btrfs_start_transaction+0x34/0x44 [ 53.851995][ T4891] btrfs_clear_free_space_tree+0xc4/0x9f0 [ 53.852900][ T4891] btrfs_start_pre_rw_mount+0x240/0x568 [ 53.853807][ T4891] btrfs_remount+0xab0/0x12b0 [ 53.854630][ T4891] legacy_reconfigure+0xf8/0x110 [ 53.855513][ T4891] reconfigure_super+0x1d4/0x6f4 [ 53.856397][ T4891] path_mount+0xc88/0x1008 [ 53.857120][ T4891] __arm64_sys_mount+0x514/0x5f0 [ 53.857924][ T4891] invoke_syscall+0x98/0x2b0 [ 53.858682][ T4891] el0_svc_common+0x138/0x258 [ 53.859438][ T4891] do_el0_svc+0x58/0x13c [ 53.860099][ T4891] el0_svc+0x78/0x1d0 [ 53.860822][ T4891] el0t_64_sync_handler+0xcc/0xe4 [ 53.861667][ T4891] el0t_64_sync+0x1a0/0x1a4 [ 53.863841][ T4891] BTRFS warning (device loop0): failed to clear free space tree: -12 [ 53.896813][ T4361] BTRFS: device fsid ed167579-eb65-4e76-9a50-61ac97e9b59d devid 1 transid 9 /dev/loop0 scanned by udevd (4361) [ 53.996090][ T4912] loop0: detected capacity change from 0 to 32768 [ 54.009076][ T4683] Bluetooth: hci0: command 0x041b tx timeout [ 54.034600][ T4912] FAULT_INJECTION: forcing a failure. [ 54.034600][ T4912] name failslab, interval 1, probability 0, space 0, times 0 [ 54.036727][ T4912] CPU: 0 PID: 4912 Comm: syz-executor.0 Tainted: G W syzkaller #0 [ 54.038212][ T4912] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/18/2026 [ 54.039936][ T4912] Call trace: [ 54.040435][ T4912] dump_backtrace+0x0/0x458 [ 54.041217][ T4912] show_stack+0x2c/0x3c [ 54.041905][ T4912] __dump_stack+0x30/0x40 [ 54.042617][ T4912] dump_stack_lvl+0xf4/0x15c [ 54.043392][ T4912] dump_stack+0x1c/0x5c [ 54.044127][ T4912] should_fail+0x3bc/0x514 [ 54.044859][ T4912] __should_failslab+0xbc/0x10c [ 54.045661][ T4912] should_failslab+0x10/0x28 [ 54.046469][ T4912] slab_pre_alloc_hook+0x64/0xe8 [ 54.047325][ T4912] kmem_cache_alloc+0x94/0x3d4 [ 54.048071][ T4912] start_transaction+0x4d0/0x13ec [ 54.048922][ T4912] btrfs_start_transaction+0x34/0x44 [ 54.049797][ T4912] btrfs_clear_free_space_tree+0xc4/0x9f0 [ 54.050766][ T4912] btrfs_start_pre_rw_mount+0x240/0x568 [ 54.051692][ T4912] btrfs_remount+0xab0/0x12b0 [ 54.052478][ T4912] legacy_reconfigure+0xf8/0x110 [ 54.053307][ T4912] reconfigure_super+0x1d4/0x6f4 [ 54.054197][ T4912] path_mount+0xc88/0x1008 [ 54.054946][ T4912] __arm64_sys_mount+0x514/0x5f0 [ 54.055767][ T4912] invoke_syscall+0x98/0x2b0 [ 54.056520][ T4912] el0_svc_common+0x138/0x258 [ 54.057301][ T4912] do_el0_svc+0x58/0x13c [ 54.057955][ T4912] el0_svc+0x78/0x1d0 [ 54.058612][ T4912] el0t_64_sync_handler+0xcc/0xe4 [ 54.059428][ T4912] el0t_64_sync+0x1a0/0x1a4 [ 54.061473][ T4912] BTRFS warning (device loop0): failed to clear free space tree: -12 [ 54.280408][ T4934] BTRFS: device fsid ed167579-eb65-4e76-9a50-61ac97e9b59d devid 1 transid 8 /dev/loop0 scanned by syz-executor.0 (4934) [ 54.298966][ T4934] FAULT_INJECTION: forcing a failure. [ 54.298966][ T4934] name failslab, interval 1, probability 0, space 0, times 0 [ 54.301220][ T4934] CPU: 1 PID: 4934 Comm: syz-executor.0 Tainted: G W syzkaller #0 [ 54.302736][ T4934] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/18/2026 [ 54.304478][ T4934] Call trace: [ 54.305023][ T4934] dump_backtrace+0x0/0x458 [ 54.305773][ T4934] show_stack+0x2c/0x3c [ 54.306513][ T4934] __dump_stack+0x30/0x40 [ 54.307191][ T4934] dump_stack_lvl+0xf4/0x15c [ 54.307887][ T4934] dump_stack+0x1c/0x5c [ 54.308685][ T4934] should_fail+0x3bc/0x514 [ 54.309452][ T4934] __should_failslab+0xbc/0x10c [ 54.310279][ T4934] should_failslab+0x10/0x28 [ 54.311055][ T4934] slab_pre_alloc_hook+0x64/0xe8 [ 54.311885][ T4934] kmem_cache_alloc_trace+0x98/0x3ec [ 54.312796][ T4934] join_transaction+0x10c/0xa5c [ 54.313621][ T4934] start_transaction+0x914/0x13ec [ 54.314406][ T4934] btrfs_start_transaction+0x34/0x44 [ 54.315240][ T4934] btrfs_clear_free_space_tree+0xc4/0x9f0 [ 54.316165][ T4934] btrfs_start_pre_rw_mount+0x240/0x568 [ 54.317099][ T4934] btrfs_remount+0xab0/0x12b0 [ 54.317888][ T4934] legacy_reconfigure+0xf8/0x110 [ 54.318717][ T4934] reconfigure_super+0x1d4/0x6f4 [ 54.319515][ T4934] path_mount+0xc88/0x1008 [ 54.320279][ T4934] __arm64_sys_mount+0x514/0x5f0 [ 54.321169][ T4934] invoke_syscall+0x98/0x2b0 [ 54.321980][ T4934] el0_svc_common+0x138/0x258 [ 54.322788][ T4934] do_el0_svc+0x58/0x13c [ 54.323461][ T4934] el0_svc+0x78/0x1d0 [ 54.324076][ T4934] el0t_64_sync_handler+0xcc/0xe4 [ 54.324945][ T4934] el0t_64_sync+0x1a0/0x1a4 [ 54.326443][ T4934] BTRFS warning (device loop0): failed to clear free space tree: -12 [ 54.369350][ T4361] BTRFS: device fsid ed167579-eb65-4e76-9a50-61ac97e9b59d devid 1 transid 9 /dev/loop0 scanned by udevd (4361) [ 54.521063][ T4955] FAULT_INJECTION: forcing a failure. [ 54.521063][ T4955] name failslab, interval 1, probability 0, space 0, times 0 [ 54.523105][ T4955] CPU: 0 PID: 4955 Comm: syz-executor.0 Tainted: G W syzkaller #0 [ 54.524586][ T4955] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/18/2026 [ 54.526254][ T4955] Call trace: [ 54.526782][ T4955] dump_backtrace+0x0/0x458 [ 54.527519][ T4955] show_stack+0x2c/0x3c [ 54.528191][ T4955] __dump_stack+0x30/0x40 [ 54.528843][ T4955] dump_stack_lvl+0xf4/0x15c [ 54.529639][ T4955] dump_stack+0x1c/0x5c [ 54.530388][ T4955] should_fail+0x3bc/0x514 [ 54.531087][ T4955] __should_failslab+0xbc/0x10c [ 54.531883][ T4955] should_failslab+0x10/0x28 [ 54.532674][ T4955] slab_pre_alloc_hook+0x64/0xe8 [ 54.533530][ T4955] kmem_cache_alloc_trace+0x98/0x3ec [ 54.534422][ T4955] join_transaction+0x10c/0xa5c [ 54.535168][ T4955] start_transaction+0x914/0x13ec [ 54.535934][ T4955] btrfs_start_transaction+0x34/0x44 [ 54.536780][ T4955] btrfs_clear_free_space_tree+0xc4/0x9f0 [ 54.537722][ T4955] btrfs_start_pre_rw_mount+0x240/0x568 [ 54.538638][ T4955] btrfs_remount+0xab0/0x12b0 [ 54.539364][ T4955] legacy_reconfigure+0xf8/0x110 [ 54.540150][ T4955] reconfigure_super+0x1d4/0x6f4 [ 54.540896][ T4955] path_mount+0xc88/0x1008 [ 54.541617][ T4955] __arm64_sys_mount+0x514/0x5f0 [ 54.542427][ T4955] invoke_syscall+0x98/0x2b0 [ 54.543180][ T4955] el0_svc_common+0x138/0x258 [ 54.543952][ T4955] do_el0_svc+0x58/0x13c [ 54.544662][ T4955] el0_svc+0x78/0x1d0 [ 54.545326][ T4955] el0t_64_sync_handler+0xcc/0xe4 [ 54.546149][ T4955] el0t_64_sync+0x1a0/0x1a4 [ 54.548155][ T4955] BTRFS warning (device loop0): failed to clear free space tree: -12 [ 54.584036][ T4361] BTRFS: device fsid ed167579-eb65-4e76-9a50-61ac97e9b59d devid 1 transid 9 /dev/loop0 scanned by udevd (4361) [ 54.744742][ T4977] FAULT_INJECTION: forcing a failure. [ 54.744742][ T4977] name failslab, interval 1, probability 0, space 0, times 0 [ 54.747065][ T4977] CPU: 1 PID: 4977 Comm: syz-executor.0 Tainted: G W syzkaller #0 [ 54.748610][ T4977] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/18/2026 [ 54.750283][ T4977] Call trace: [ 54.750810][ T4977] dump_backtrace+0x0/0x458 [ 54.751609][ T4977] show_stack+0x2c/0x3c [ 54.752415][ T4977] __dump_stack+0x30/0x40 [ 54.753195][ T4977] dump_stack_lvl+0xf4/0x15c [ 54.753970][ T4977] dump_stack+0x1c/0x5c [ 54.754715][ T4977] should_fail+0x3bc/0x514 [ 54.758540][ T4977] __should_failslab+0xbc/0x10c [ 54.759389][ T4977] should_failslab+0x10/0x28 [ 54.760149][ T4977] slab_pre_alloc_hook+0x64/0xe8 [ 54.760996][ T4977] kmem_cache_alloc_trace+0x98/0x3ec [ 54.761878][ T4977] join_transaction+0x10c/0xa5c [ 54.762857][ T4977] start_transaction+0x914/0x13ec [ 54.763743][ T4977] btrfs_start_transaction+0x34/0x44 [ 54.764606][ T4977] btrfs_clear_free_space_tree+0xc4/0x9f0 [ 54.765633][ T4977] btrfs_start_pre_rw_mount+0x240/0x568 [ 54.766570][ T4977] btrfs_remount+0xab0/0x12b0 [ 54.767345][ T4977] legacy_reconfigure+0xf8/0x110 [ 54.768163][ T4977] reconfigure_super+0x1d4/0x6f4 [ 54.768996][ T4977] path_mount+0xc88/0x1008 [ 54.769709][ T4977] __arm64_sys_mount+0x514/0x5f0 [ 54.770474][ T4977] invoke_syscall+0x98/0x2b0 [ 54.771202][ T4977] el0_svc_common+0x138/0x258 [ 54.771989][ T4977] do_el0_svc+0x58/0x13c [ 54.772762][ T4977] el0_svc+0x78/0x1d0 [ 54.773427][ T4977] el0t_64_sync_handler+0xcc/0xe4 [ 54.774318][ T4977] el0t_64_sync+0x1a0/0x1a4 [ 54.776508][ T4977] BTRFS warning (device loop0): failed to clear free space tree: -12 [ 54.822085][ T4361] BTRFS: device fsid ed167579-eb65-4e76-9a50-61ac97e9b59d devid 1 transid 9 /dev/loop0 scanned by udevd (4361) [ 55.019882][ T4999] FAULT_INJECTION: forcing a failure. [ 55.019882][ T4999] name failslab, interval 1, probability 0, space 0, times 0 [ 55.022251][ T4999] CPU: 1 PID: 4999 Comm: syz-executor.0 Tainted: G W syzkaller #0 [ 55.023688][ T4999] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/18/2026 [ 55.025465][ T4999] Call trace: [ 55.026030][ T4999] dump_backtrace+0x0/0x458 [ 55.026845][ T4999] show_stack+0x2c/0x3c [ 55.027607][ T4999] __dump_stack+0x30/0x40 [ 55.028339][ T4999] dump_stack_lvl+0xf4/0x15c [ 55.029104][ T4999] dump_stack+0x1c/0x5c [ 55.029800][ T4999] should_fail+0x3bc/0x514 [ 55.030516][ T4999] __should_failslab+0xbc/0x10c [ 55.031289][ T4999] should_failslab+0x10/0x28 [ 55.032091][ T4999] slab_pre_alloc_hook+0x64/0xe8 [ 55.032904][ T4999] kmem_cache_alloc+0x94/0x3d4 [ 55.033686][ T4999] btrfs_alloc_path+0x5c/0x68 [ 55.034471][ T4999] btrfs_clear_free_space_tree+0x24c/0x9f0 [ 55.035465][ T4999] btrfs_start_pre_rw_mount+0x240/0x568 [ 55.036445][ T4999] btrfs_remount+0xab0/0x12b0 [ 55.037240][ T4999] legacy_reconfigure+0xf8/0x110 [ 55.038109][ T4999] reconfigure_super+0x1d4/0x6f4 [ 55.038974][ T4999] path_mount+0xc88/0x1008 [ 55.039733][ T4999] __arm64_sys_mount+0x514/0x5f0 [ 55.040566][ T4999] invoke_syscall+0x98/0x2b0 [ 55.041342][ T4999] el0_svc_common+0x138/0x258 [ 55.042129][ T4999] do_el0_svc+0x58/0x13c [ 55.042827][ T4999] el0_svc+0x78/0x1d0 [ 55.043436][ T4999] el0t_64_sync_handler+0xcc/0xe4 [ 55.044265][ T4999] el0t_64_sync+0x1a0/0x1a4 [ 55.045791][ T4999] ------------[ cut here ]------------ [ 55.046834][ T4999] WARNING: CPU: 1 PID: 4999 at fs/btrfs/free-space-tree.c:1267 btrfs_clear_free_space_tree+0x6f4/0x9f0 [ 55.048722][ T4999] Modules linked in: [ 55.049398][ T4999] CPU: 1 PID: 4999 Comm: syz-executor.0 Tainted: G W syzkaller #0 [ 55.050922][ T4999] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/18/2026 [ 55.052616][ T4999] pstate: 62400005 (nZCv daif +PAN -UAO +TCO -DIT -SSBS BTYPE=--) [ 55.053941][ T4999] pc : btrfs_clear_free_space_tree+0x6f4/0x9f0 [ 55.054988][ T4999] lr : btrfs_clear_free_space_tree+0x6f4/0x9f0 [ 55.056134][ T4999] sp : ffff8000204f77a0 [ 55.056820][ T4999] x29: ffff8000204f7850 x28: 1fffe0001a1cc8d3 x27: ffff70000409eef8 [ 55.058187][ T4999] x26: dfff800000000000 x25: 0000000000000000 x24: 0000000000000006 [ 55.059583][ T4999] x23: 1fffe0001bdc18e7 x22: ffff0000d0e659d0 x21: ffff0000dee0c738 [ 55.060942][ T4999] x20: 00000000fffffff4 x19: ffff0000dee0c6e0 x18: 0000000000000001 [ 55.062361][ T4999] x17: 0000000000000000 x16: ffff80001125f22c x15: 00000000ffffffff [ 55.063774][ T4999] x14: 0000000000000001 x13: 1fffe000341f47ab x12: 0000000000ff0100 [ 55.065195][ T4999] x11: 0000000000000000 x10: 0000000000000000 x9 : 2c840f92f083a000 [ 55.066530][ T4999] x8 : 2c840f92f083a000 x7 : 0000000000000001 x6 : 0000000000000001 [ 55.067922][ T4999] x5 : ffff8000204f70b8 x4 : ffff80001437f3e0 x3 : ffff80000850932c [ 55.069334][ T4999] x2 : 0000000000000001 x1 : 0000000100000000 x0 : 0000000000000026 [ 55.070711][ T4999] Call trace: [ 55.071224][ T4999] btrfs_clear_free_space_tree+0x6f4/0x9f0 [ 55.072260][ T4999] btrfs_start_pre_rw_mount+0x240/0x568 [ 55.073266][ T4999] btrfs_remount+0xab0/0x12b0 [ 55.074094][ T4999] legacy_reconfigure+0xf8/0x110 [ 55.074988][ T4999] reconfigure_super+0x1d4/0x6f4 [ 55.075869][ T4999] path_mount+0xc88/0x1008 [ 55.076678][ T4999] __arm64_sys_mount+0x514/0x5f0 [ 55.077563][ T4999] invoke_syscall+0x98/0x2b0 [ 55.078352][ T4999] el0_svc_common+0x138/0x258 [ 55.079271][ T4999] do_el0_svc+0x58/0x13c [ 55.080030][ T4999] el0_svc+0x78/0x1d0 [ 55.080720][ T4999] el0t_64_sync_handler+0xcc/0xe4 [ 55.081589][ T4999] el0t_64_sync+0x1a0/0x1a4 [ 55.082408][ T4999] irq event stamp: 78876 [ 55.083135][ T4999] hardirqs last enabled at (78875): [] __up_console_sem+0xb4/0xfc [ 55.084819][ T4999] hardirqs last disabled at (78876): [] el1_dbg+0x24/0x80 [ 55.086348][ T4999] softirqs last enabled at (78856): [] handle_softirqs+0xa40/0xbe4 [ 55.088020][ T4999] softirqs last disabled at (78833): [] __irq_exit_rcu+0x240/0x43c [ 55.089432][ T4999] ---[ end trace a09f62afa63081b3 ]--- [ 55.091514][ T4999] BTRFS: error (device loop0) in btrfs_clear_free_space_tree:1267: errno=-12 Out of memory [ 55.093361][ T4999] BTRFS warning (device loop0): failed to clear free space tree: -12 1970/01/01 00:00:55 executed programs: 14 [ 55.121234][ T4357] BTRFS warning (device loop0): page private not zero on page 5341184 [ 55.225859][ T5022] BTRFS: device fsid ed167579-eb65-4e76-9a50-61ac97e9b59d devid 1 transid 8 /dev/loop0 scanned by syz-executor.0 (5022) [ 55.238799][ T5022] FAULT_INJECTION: forcing a failure. [ 55.238799][ T5022] name failslab, interval 1, probability 0, space 0, times 0 [ 55.241064][ T5022] CPU: 1 PID: 5022 Comm: syz-executor.0 Tainted: G W syzkaller #0 [ 55.242588][ T5022] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/18/2026 [ 55.244305][ T5022] Call trace: [ 55.244875][ T5022] dump_backtrace+0x0/0x458 [ 55.245642][ T5022] show_stack+0x2c/0x3c [ 55.246407][ T5022] __dump_stack+0x30/0x40 [ 55.247208][ T5022] dump_stack_lvl+0xf4/0x15c [ 55.248031][ T5022] dump_stack+0x1c/0x5c [ 55.248732][ T5022] should_fail+0x3bc/0x514 [ 55.249456][ T5022] __should_failslab+0xbc/0x10c [ 55.250247][ T5022] should_failslab+0x10/0x28 [ 55.251028][ T5022] slab_pre_alloc_hook+0x64/0xe8 [ 55.251845][ T5022] kmem_cache_alloc+0x94/0x3d4 [ 55.252671][ T5022] start_transaction+0x4d0/0x13ec [ 55.253493][ T5022] btrfs_start_transaction+0x34/0x44 [ 55.254356][ T5022] btrfs_clear_free_space_tree+0xc4/0x9f0 [ 55.255301][ T5022] btrfs_start_pre_rw_mount+0x240/0x568 [ 55.256154][ T5022] btrfs_remount+0xab0/0x12b0 [ 55.256961][ T5022] legacy_reconfigure+0xf8/0x110 [ 55.257844][ T5022] reconfigure_super+0x1d4/0x6f4 [ 55.258668][ T5022] path_mount+0xc88/0x1008 [ 55.259347][ T5022] __arm64_sys_mount+0x514/0x5f0 [ 55.260092][ T5022] invoke_syscall+0x98/0x2b0 [ 55.260745][ T5022] el0_svc_common+0x138/0x258 [ 55.261570][ T5022] do_el0_svc+0x58/0x13c [ 55.262271][ T5022] el0_svc+0x78/0x1d0 [ 55.262930][ T5022] el0t_64_sync_handler+0xcc/0xe4 [ 55.263768][ T5022] el0t_64_sync+0x1a0/0x1a4 [ 55.264701][ T5022] BTRFS warning (device loop0): failed to clear free space tree: -12 [ 55.468313][ T5043] BTRFS: device fsid ed167579-eb65-4e76-9a50-61ac97e9b59d devid 1 transid 8 /dev/loop0 scanned by syz-executor.0 (5043) [ 55.493243][ T5043] FAULT_INJECTION: forcing a failure. [ 55.493243][ T5043] name failslab, interval 1, probability 0, space 0, times 0 [ 55.495486][ T5043] CPU: 0 PID: 5043 Comm: syz-executor.0 Tainted: G W syzkaller #0 [ 55.496911][ T5043] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/18/2026 [ 55.498447][ T5043] Call trace: [ 55.499032][ T5043] dump_backtrace+0x0/0x458 [ 55.499771][ T5043] show_stack+0x2c/0x3c [ 55.500412][ T5043] __dump_stack+0x30/0x40 [ 55.501049][ T5043] dump_stack_lvl+0xf4/0x15c [ 55.501732][ T5043] dump_stack+0x1c/0x5c [ 55.502342][ T5043] should_fail+0x3bc/0x514 [ 55.502999][ T5043] __should_failslab+0xbc/0x10c [ 55.503739][ T5043] should_failslab+0x10/0x28 [ 55.504427][ T5043] slab_pre_alloc_hook+0x64/0xe8 [ 55.505177][ T5043] kmem_cache_alloc+0x94/0x3d4 [ 55.505983][ T5043] btrfs_alloc_path+0x5c/0x68 [ 55.506715][ T5043] btrfs_clear_free_space_tree+0x24c/0x9f0 [ 55.507663][ T5043] btrfs_start_pre_rw_mount+0x240/0x568 [ 55.508605][ T5043] btrfs_remount+0xab0/0x12b0 [ 55.509403][ T5043] legacy_reconfigure+0xf8/0x110 [ 55.510219][ T5043] reconfigure_super+0x1d4/0x6f4 [ 55.511077][ T5043] path_mount+0xc88/0x1008 [ 55.511836][ T5043] __arm64_sys_mount+0x514/0x5f0 [ 55.512725][ T5043] invoke_syscall+0x98/0x2b0 [ 55.513524][ T5043] el0_svc_common+0x138/0x258 [ 55.514274][ T5043] do_el0_svc+0x58/0x13c [ 55.514946][ T5043] el0_svc+0x78/0x1d0 [ 55.515609][ T5043] el0t_64_sync_handler+0xcc/0xe4 [ 55.516504][ T5043] el0t_64_sync+0x1a0/0x1a4 [ 55.518092][ T5043] ------------[ cut here ]------------ [ 55.519191][ T5043] WARNING: CPU: 0 PID: 5043 at fs/btrfs/free-space-tree.c:1267 btrfs_clear_free_space_tree+0x6f4/0x9f0 [ 55.520911][ T5043] Modules linked in: [ 55.521546][ T5043] CPU: 0 PID: 5043 Comm: syz-executor.0 Tainted: G W syzkaller #0 [ 55.523142][ T5043] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/18/2026 [ 55.524859][ T5043] pstate: 62400005 (nZCv daif +PAN -UAO +TCO -DIT -SSBS BTYPE=--) [ 55.526183][ T5043] pc : btrfs_clear_free_space_tree+0x6f4/0x9f0 [ 55.527239][ T5043] lr : btrfs_clear_free_space_tree+0x6f4/0x9f0 [ 55.528275][ T5043] sp : ffff8000204f77a0 [ 55.529015][ T5043] x29: ffff8000204f7850 x28: 1fffe0001aa438d3 x27: ffff70000409eef8 [ 55.530334][ T5043] x26: dfff800000000000 x25: 0000000000000000 x24: 0000000000000006 [ 55.531644][ T5043] x23: 1fffe0001bda9c21 x22: ffff0000d521d9d0 x21: ffff0000ded4e108 [ 55.532986][ T5043] x20: 00000000fffffff4 x19: ffff0000ded4e0b0 x18: 0000000000000001 [ 55.534255][ T5043] x17: 0000000000000000 x16: ffff80001125f22c x15: 00000000ffffffff [ 55.535695][ T5043] x14: 0000000000000001 x13: 1fffe000341f05ab x12: 0000000000ff0100 [ 55.537052][ T5043] x11: 0000000000000000 x10: 0000000000000000 x9 : d3fb8cbcbd95fa00 [ 55.538437][ T5043] x8 : d3fb8cbcbd95fa00 x7 : 0000000000000001 x6 : 0000000000000001 [ 55.539829][ T5043] x5 : ffff8000204f70b8 x4 : ffff80001437f3e0 x3 : ffff80000850932c [ 55.541232][ T5043] x2 : 0000000000000001 x1 : 0000000100000000 x0 : 0000000000000026 [ 55.542588][ T5043] Call trace: [ 55.543161][ T5043] btrfs_clear_free_space_tree+0x6f4/0x9f0 [ 55.544162][ T5043] btrfs_start_pre_rw_mount+0x240/0x568 [ 55.545083][ T5043] btrfs_remount+0xab0/0x12b0 [ 55.545899][ T5043] legacy_reconfigure+0xf8/0x110 [ 55.546798][ T5043] reconfigure_super+0x1d4/0x6f4 [ 55.547591][ T5043] path_mount+0xc88/0x1008 [ 55.548360][ T5043] __arm64_sys_mount+0x514/0x5f0 [ 55.549128][ T5043] invoke_syscall+0x98/0x2b0 [ 55.549843][ T5043] el0_svc_common+0x138/0x258 [ 55.550556][ T5043] do_el0_svc+0x58/0x13c [ 55.551219][ T5043] el0_svc+0x78/0x1d0 [ 55.551870][ T5043] el0t_64_sync_handler+0xcc/0xe4 [ 55.552687][ T5043] el0t_64_sync+0x1a0/0x1a4 [ 55.553403][ T5043] irq event stamp: 79222 [ 55.554119][ T5043] hardirqs last enabled at (79221): [] __up_console_sem+0xb4/0xfc [ 55.555730][ T5043] hardirqs last disabled at (79222): [] el1_dbg+0x24/0x80 [ 55.557097][ T5043] softirqs last enabled at (79212): [] handle_softirqs+0xa40/0xbe4 [ 55.558647][ T5043] softirqs last disabled at (79163): [] __irq_exit_rcu+0x240/0x43c [ 55.560221][ T5043] ---[ end trace a09f62afa63081b4 ]--- [ 55.562309][ T5043] BTRFS: error (device loop0) in btrfs_clear_free_space_tree:1267: errno=-12 Out of memory [ 55.564149][ T5043] BTRFS warning (device loop0): failed to clear free space tree: -12 [ 55.590478][ T4357] BTRFS warning (device loop0): page private not zero on page 5341184 [ 55.607081][ T4361] BTRFS: device fsid ed167579-eb65-4e76-9a50-61ac97e9b59d devid 1 transid 8 /dev/loop0 scanned by udevd (4361) [ 55.706200][ T5065] FAULT_INJECTION: forcing a failure. [ 55.706200][ T5065] name failslab, interval 1, probability 0, space 0, times 0 [ 55.708545][ T5065] CPU: 0 PID: 5065 Comm: syz-executor.0 Tainted: G W syzkaller #0 [ 55.710083][ T5065] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/18/2026 [ 55.711799][ T5065] Call trace: [ 55.712321][ T5065] dump_backtrace+0x0/0x458 [ 55.713038][ T5065] show_stack+0x2c/0x3c [ 55.713795][ T5065] __dump_stack+0x30/0x40 [ 55.714544][ T5065] dump_stack_lvl+0xf4/0x15c [ 55.715309][ T5065] dump_stack+0x1c/0x5c [ 55.715964][ T5065] should_fail+0x3bc/0x514 [ 55.716689][ T5065] __should_failslab+0xbc/0x10c [ 55.717429][ T5065] should_failslab+0x10/0x28 [ 55.718168][ T5065] slab_pre_alloc_hook+0x64/0xe8 [ 55.718986][ T5065] kmem_cache_alloc_trace+0x98/0x3ec [ 55.719863][ T5065] join_transaction+0x10c/0xa5c [ 55.720681][ T5065] start_transaction+0x914/0x13ec [ 55.721499][ T5065] btrfs_start_transaction+0x34/0x44 [ 55.722360][ T5065] btrfs_clear_free_space_tree+0xc4/0x9f0 [ 55.723282][ T5065] btrfs_start_pre_rw_mount+0x240/0x568 [ 55.724273][ T5065] btrfs_remount+0xab0/0x12b0 [ 55.725004][ T5065] legacy_reconfigure+0xf8/0x110 [ 55.725833][ T5065] reconfigure_super+0x1d4/0x6f4 [ 55.726689][ T5065] path_mount+0xc88/0x1008 [ 55.727450][ T5065] __arm64_sys_mount+0x514/0x5f0 [ 55.728333][ T5065] invoke_syscall+0x98/0x2b0 [ 55.729061][ T5065] el0_svc_common+0x138/0x258 [ 55.729795][ T5065] do_el0_svc+0x58/0x13c [ 55.730477][ T5065] el0_svc+0x78/0x1d0 [ 55.731147][ T5065] el0t_64_sync_handler+0xcc/0xe4 [ 55.731976][ T5065] el0t_64_sync+0x1a0/0x1a4 [ 55.734449][ T5065] BTRFS warning (device loop0): failed to clear free space tree: -12 [ 55.932721][ T5087] BTRFS: device fsid ed167579-eb65-4e76-9a50-61ac97e9b59d devid 1 transid 8 /dev/loop0 scanned by syz-executor.0 (5087) [ 55.954771][ T5087] FAULT_INJECTION: forcing a failure. [ 55.954771][ T5087] name failslab, interval 1, probability 0, space 0, times 0 [ 55.957196][ T5087] CPU: 1 PID: 5087 Comm: syz-executor.0 Tainted: G W syzkaller #0 [ 55.958703][ T5087] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/18/2026 [ 55.960424][ T5087] Call trace: [ 55.960949][ T5087] dump_backtrace+0x0/0x458 [ 55.961739][ T5087] show_stack+0x2c/0x3c [ 55.962463][ T5087] __dump_stack+0x30/0x40 [ 55.963205][ T5087] dump_stack_lvl+0xf4/0x15c [ 55.963967][ T5087] dump_stack+0x1c/0x5c [ 55.964710][ T5087] should_fail+0x3bc/0x514 [ 55.965492][ T5087] __should_failslab+0xbc/0x10c [ 55.966331][ T5087] should_failslab+0x10/0x28 [ 55.967073][ T5087] slab_pre_alloc_hook+0x64/0xe8 [ 55.967902][ T5087] kmem_cache_alloc_trace+0x98/0x3ec [ 55.968747][ T5087] join_transaction+0x10c/0xa5c [ 55.969584][ T5087] start_transaction+0x914/0x13ec [ 55.970459][ T5087] btrfs_start_transaction+0x34/0x44 [ 55.971283][ T5087] btrfs_clear_free_space_tree+0xc4/0x9f0 [ 55.972162][ T5087] btrfs_start_pre_rw_mount+0x240/0x568 [ 55.973087][ T5087] btrfs_remount+0xab0/0x12b0 [ 55.973839][ T5087] legacy_reconfigure+0xf8/0x110 [ 55.974707][ T5087] reconfigure_super+0x1d4/0x6f4 [ 55.975605][ T5087] path_mount+0xc88/0x1008 [ 55.976373][ T5087] __arm64_sys_mount+0x514/0x5f0 [ 55.977211][ T5087] invoke_syscall+0x98/0x2b0 [ 55.977994][ T5087] el0_svc_common+0x138/0x258 [ 55.978766][ T5087] do_el0_svc+0x58/0x13c [ 55.979462][ T5087] el0_svc+0x78/0x1d0 [ 55.980141][ T5087] el0t_64_sync_handler+0xcc/0xe4 [ 55.981000][ T5087] el0t_64_sync+0x1a0/0x1a4 [ 55.983105][ T5087] BTRFS warning (device loop0): failed to clear free space tree: -12 [ 56.090145][ T4667] Bluetooth: hci0: command 0x040f tx timeout [ 56.150964][ T5109] BTRFS: device fsid ed167579-eb65-4e76-9a50-61ac97e9b59d devid 1 transid 8 /dev/loop0 scanned by syz-executor.0 (5109) [ 56.161649][ T5109] btrfs_printk: 129 callbacks suppressed [ 56.161657][ T5109] BTRFS info (device loop0): enabling ssd optimizations [ 56.165513][ T5109] BTRFS info (device loop0): using default commit interval 30s [ 56.166855][ T5109] BTRFS info (device loop0): force clearing of disk cache [ 56.168024][ T5109] BTRFS info (device loop0): clearing free space tree [ 56.170042][ T5109] FAULT_INJECTION: forcing a failure. [ 56.170042][ T5109] name failslab, interval 1, probability 0, space 0, times 0 [ 56.172008][ T5109] CPU: 1 PID: 5109 Comm: syz-executor.0 Tainted: G W syzkaller #0 [ 56.173571][ T5109] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/18/2026 [ 56.175255][ T5109] Call trace: [ 56.175848][ T5109] dump_backtrace+0x0/0x458 [ 56.176539][ T5109] show_stack+0x2c/0x3c [ 56.177241][ T5109] __dump_stack+0x30/0x40 [ 56.177964][ T5109] dump_stack_lvl+0xf4/0x15c [ 56.178701][ T5109] dump_stack+0x1c/0x5c [ 56.179394][ T5109] should_fail+0x3bc/0x514 [ 56.180156][ T5109] __should_failslab+0xbc/0x10c [ 56.181066][ T5109] should_failslab+0x10/0x28 [ 56.181834][ T5109] slab_pre_alloc_hook+0x64/0xe8 [ 56.182707][ T5109] kmem_cache_alloc_trace+0x98/0x3ec [ 56.183571][ T5109] join_transaction+0x10c/0xa5c [ 56.184388][ T5109] start_transaction+0x914/0x13ec [ 56.185240][ T5109] btrfs_start_transaction+0x34/0x44 [ 56.186106][ T5109] btrfs_clear_free_space_tree+0xc4/0x9f0 [ 56.187107][ T5109] btrfs_start_pre_rw_mount+0x240/0x568 [ 56.188054][ T5109] btrfs_remount+0xab0/0x12b0 [ 56.188793][ T5109] legacy_reconfigure+0xf8/0x110 [ 56.189635][ T5109] reconfigure_super+0x1d4/0x6f4 [ 56.190543][ T5109] path_mount+0xc88/0x1008 [ 56.191361][ T5109] __arm64_sys_mount+0x514/0x5f0 [ 56.192262][ T5109] invoke_syscall+0x98/0x2b0 [ 56.193059][ T5109] el0_svc_common+0x138/0x258 [ 56.193841][ T5109] do_el0_svc+0x58/0x13c [ 56.194538][ T5109] el0_svc+0x78/0x1d0 [ 56.195249][ T5109] el0t_64_sync_handler+0xcc/0xe4 [ 56.196066][ T5109] el0t_64_sync+0x1a0/0x1a4 [ 56.198624][ T5109] BTRFS warning (device loop0): failed to clear free space tree: -12 [ 56.245920][ T4361] BTRFS: device fsid ed167579-eb65-4e76-9a50-61ac97e9b59d devid 1 transid 9 /dev/loop0 scanned by udevd (4361) [ 56.331875][ T5130] set_capacity_and_notify: 9 callbacks suppressed [ 56.331883][ T5130] loop0: detected capacity change from 0 to 32768 [ 56.391060][ T5130] BTRFS info (device loop0): using sha256 (sha256-ce) checksum algorithm [ 56.392469][ T5130] BTRFS info (device loop0): turning on flush-on-commit [ 56.393687][ T5130] BTRFS info (device loop0): using default commit interval 30s [ 56.395002][ T5130] BTRFS info (device loop0): force clearing of disk cache [ 56.396159][ T5130] BTRFS info (device loop0): force zlib compression, level 3 [ 56.397414][ T5130] BTRFS info (device loop0): enabling disk space caching [ 56.398585][ T5130] BTRFS info (device loop0): disk space caching is enabled [ 56.400422][ T5130] BTRFS info (device loop0): has skinny extents [ 56.414993][ T5130] BTRFS info (device loop0): enabling ssd optimizations [ 56.418103][ T5130] BTRFS info (device loop0): using default commit interval 30s [ 56.419703][ T5130] BTRFS info (device loop0): force clearing of disk cache [ 56.420905][ T5130] BTRFS info (device loop0): clearing free space tree [ 56.422149][ T5130] FAULT_INJECTION: forcing a failure. [ 56.422149][ T5130] name failslab, interval 1, probability 0, space 0, times 0 [ 56.424484][ T5130] CPU: 1 PID: 5130 Comm: syz-executor.0 Tainted: G W syzkaller #0 [ 56.426062][ T5130] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/18/2026 [ 56.427839][ T5130] Call trace: [ 56.428456][ T5130] dump_backtrace+0x0/0x458 [ 56.429271][ T5130] show_stack+0x2c/0x3c [ 56.429988][ T5130] __dump_stack+0x30/0x40 [ 56.430683][ T5130] dump_stack_lvl+0xf4/0x15c [ 56.431470][ T5130] dump_stack+0x1c/0x5c [ 56.432234][ T5130] should_fail+0x3bc/0x514 [ 56.432991][ T5130] __should_failslab+0xbc/0x10c [ 56.433840][ T5130] should_failslab+0x10/0x28 [ 56.434690][ T5130] slab_pre_alloc_hook+0x64/0xe8 [ 56.435568][ T5130] kmem_cache_alloc_trace+0x98/0x3ec [ 56.436506][ T5130] join_transaction+0x10c/0xa5c [ 56.437313][ T5130] start_transaction+0x914/0x13ec [ 56.438141][ T5130] btrfs_start_transaction+0x34/0x44 [ 56.439046][ T5130] btrfs_clear_free_space_tree+0xc4/0x9f0 [ 56.440036][ T5130] btrfs_start_pre_rw_mount+0x240/0x568 [ 56.440999][ T5130] btrfs_remount+0xab0/0x12b0 [ 56.441819][ T5130] legacy_reconfigure+0xf8/0x110 [ 56.442654][ T5130] reconfigure_super+0x1d4/0x6f4 [ 56.443511][ T5130] path_mount+0xc88/0x1008 [ 56.444258][ T5130] __arm64_sys_mount+0x514/0x5f0 [ 56.445108][ T5130] invoke_syscall+0x98/0x2b0 [ 56.445893][ T5130] el0_svc_common+0x138/0x258 [ 56.446713][ T5130] do_el0_svc+0x58/0x13c [ 56.447420][ T5130] el0_svc+0x78/0x1d0 [ 56.448064][ T5130] el0t_64_sync_handler+0xcc/0xe4 [ 56.448853][ T5130] el0t_64_sync+0x1a0/0x1a4 [ 56.451857][ T5130] BTRFS warning (device loop0): failed to clear free space tree: -12 [ 56.589894][ T5153] loop0: detected capacity change from 0 to 32768 [ 56.631730][ T5153] BTRFS: device fsid ed167579-eb65-4e76-9a50-61ac97e9b59d devid 1 transid 8 /dev/loop0 scanned by syz-executor.0 (5153) [ 56.635895][ T5153] BTRFS info (device loop0): using sha256 (sha256-ce) checksum algorithm [ 56.637420][ T5153] BTRFS info (device loop0): turning on flush-on-commit [ 56.638544][ T5153] BTRFS info (device loop0): using default commit interval 30s [ 56.640644][ T5153] BTRFS info (device loop0): force clearing of disk cache [ 56.641883][ T5153] BTRFS info (device loop0): force zlib compression, level 3 [ 56.643053][ T5153] BTRFS info (device loop0): enabling disk space caching [ 56.644263][ T5153] BTRFS info (device loop0): disk space caching is enabled [ 56.645441][ T5153] BTRFS info (device loop0): has skinny extents [ 56.653545][ T5153] BTRFS info (device loop0): enabling ssd optimizations [ 56.656425][ T5153] BTRFS info (device loop0): using default commit interval 30s [ 56.657614][ T5153] BTRFS info (device loop0): force clearing of disk cache [ 56.658883][ T5153] BTRFS info (device loop0): clearing free space tree [ 56.660448][ T5153] BTRFS info (device loop0): clearing compat-ro feature flag for FREE_SPACE_TREE (0x1) [ 56.662107][ T5153] BTRFS info (device loop0): clearing compat-ro feature flag for FREE_SPACE_TREE_VALID (0x2) [ 56.663665][ T5153] FAULT_INJECTION: forcing a failure. [ 56.663665][ T5153] name failslab, interval 1, probability 0, space 0, times 0 [ 56.665736][ T5153] CPU: 1 PID: 5153 Comm: syz-executor.0 Tainted: G W syzkaller #0 [ 56.667318][ T5153] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/18/2026 [ 56.669010][ T5153] Call trace: [ 56.669575][ T5153] dump_backtrace+0x0/0x458 [ 56.670353][ T5153] show_stack+0x2c/0x3c [ 56.671100][ T5153] __dump_stack+0x30/0x40 [ 56.671884][ T5153] dump_stack_lvl+0xf4/0x15c [ 56.672676][ T5153] dump_stack+0x1c/0x5c [ 56.673469][ T5153] should_fail+0x3bc/0x514 [ 56.674227][ T5153] __should_failslab+0xbc/0x10c [ 56.675054][ T5153] should_failslab+0x10/0x28 [ 56.675860][ T5153] slab_pre_alloc_hook+0x64/0xe8 [ 56.676795][ T5153] kmem_cache_alloc+0x94/0x3d4 [ 56.677599][ T5153] btrfs_alloc_path+0x5c/0x68 [ 56.678445][ T5153] btrfs_clear_free_space_tree+0x24c/0x9f0 [ 56.679375][ T5153] btrfs_start_pre_rw_mount+0x240/0x568 [ 56.680292][ T5153] btrfs_remount+0xab0/0x12b0 [ 56.681082][ T5153] legacy_reconfigure+0xf8/0x110 [ 56.681922][ T5153] reconfigure_super+0x1d4/0x6f4 [ 56.682720][ T5153] path_mount+0xc88/0x1008 [ 56.683503][ T5153] __arm64_sys_mount+0x514/0x5f0 [ 56.684361][ T5153] invoke_syscall+0x98/0x2b0 [ 56.685204][ T5153] el0_svc_common+0x138/0x258 [ 56.686038][ T5153] do_el0_svc+0x58/0x13c [ 56.686795][ T5153] el0_svc+0x78/0x1d0 [ 56.687428][ T5153] el0t_64_sync_handler+0xcc/0xe4 [ 56.688298][ T5153] el0t_64_sync+0x1a0/0x1a4 [ 56.690719][ T5153] ------------[ cut here ]------------ [ 56.691774][ T5153] WARNING: CPU: 1 PID: 5153 at fs/btrfs/free-space-tree.c:1267 btrfs_clear_free_space_tree+0x6f4/0x9f0 [ 56.693677][ T5153] Modules linked in: [ 56.694363][ T5153] CPU: 1 PID: 5153 Comm: syz-executor.0 Tainted: G W syzkaller #0 [ 56.695969][ T5153] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/18/2026 [ 56.697649][ T5153] pstate: 62400005 (nZCv daif +PAN -UAO +TCO -DIT -SSBS BTYPE=--) [ 56.698911][ T5153] pc : btrfs_clear_free_space_tree+0x6f4/0x9f0 [ 56.699961][ T5153] lr : btrfs_clear_free_space_tree+0x6f4/0x9f0 [ 56.700926][ T5153] sp : ffff800020c677a0 [ 56.701554][ T5153] x29: ffff800020c67850 x28: 1fffe0001a6260d3 x27: ffff70000418cef8 [ 56.702985][ T5153] x26: dfff800000000000 x25: 0000000000000000 x24: 0000000000000006 [ 56.704396][ T5153] x23: 1fffe0001bdc188f x22: ffff0000d31319d0 x21: ffff0000dee0c478 [ 56.705771][ T5153] x20: 00000000fffffff4 x19: ffff0000dee0c420 x18: 0000000000000001 [ 56.707109][ T5153] x17: 0000000000000000 x16: ffff80001125f22c x15: 00000000ffffffff [ 56.708525][ T5153] x14: 0000000000000001 x13: 1fffe000341f47ab x12: 0000000000ff0100 [ 56.709913][ T5153] x11: 0000000000000000 x10: 0000000000000000 x9 : 37537887246bc900 [ 56.711249][ T5153] x8 : 37537887246bc900 x7 : 0000000000000001 x6 : 0000000000000001 [ 56.712543][ T5153] x5 : ffff800020c670b8 x4 : ffff80001437f3e0 x3 : ffff80000850932c [ 56.713897][ T5153] x2 : 0000000000000001 x1 : 0000000100000000 x0 : 0000000000000026 [ 56.715228][ T5153] Call trace: [ 56.715745][ T5153] btrfs_clear_free_space_tree+0x6f4/0x9f0 [ 56.716773][ T5153] btrfs_start_pre_rw_mount+0x240/0x568 [ 56.717685][ T5153] btrfs_remount+0xab0/0x12b0 [ 56.718428][ T5153] legacy_reconfigure+0xf8/0x110 [ 56.719250][ T5153] reconfigure_super+0x1d4/0x6f4 [ 56.720115][ T5153] path_mount+0xc88/0x1008 [ 56.720804][ T5153] __arm64_sys_mount+0x514/0x5f0 [ 56.721561][ T5153] invoke_syscall+0x98/0x2b0 [ 56.722340][ T5153] el0_svc_common+0x138/0x258 [ 56.723117][ T5153] do_el0_svc+0x58/0x13c [ 56.723836][ T5153] el0_svc+0x78/0x1d0 [ 56.724519][ T5153] el0t_64_sync_handler+0xcc/0xe4 [ 56.725355][ T5153] el0t_64_sync+0x1a0/0x1a4 [ 56.726118][ T5153] irq event stamp: 79836 [ 56.726864][ T5153] hardirqs last enabled at (79835): [] __up_console_sem+0xb4/0xfc [ 56.728384][ T5153] hardirqs last disabled at (79836): [] el1_dbg+0x24/0x80 [ 56.729864][ T5153] softirqs last enabled at (79812): [] handle_softirqs+0xa40/0xbe4 [ 56.731553][ T5153] softirqs last disabled at (79767): [] __irq_exit_rcu+0x240/0x43c [ 56.733178][ T5153] ---[ end trace a09f62afa63081b5 ]--- [ 56.736159][ T5153] BTRFS: error (device loop0) in btrfs_clear_free_space_tree:1267: errno=-12 Out of memory [ 56.737838][ T5153] BTRFS warning (device loop0): failed to clear free space tree: -12 [ 56.764905][ T4357] BTRFS warning (device loop0): page private not zero on page 5341184 [ 56.906227][ T5175] loop0: detected capacity change from 0 to 32768 [ 56.955296][ T5175] BTRFS: device fsid ed167579-eb65-4e76-9a50-61ac97e9b59d devid 1 transid 8 /dev/loop0 scanned by syz-executor.0 (5175) [ 56.960419][ T5175] BTRFS info (device loop0): using sha256 (sha256-ce) checksum algorithm [ 56.962094][ T5175] BTRFS info (device loop0): turning on flush-on-commit [ 56.963208][ T5175] BTRFS info (device loop0): using default commit interval 30s [ 56.964464][ T5175] BTRFS info (device loop0): force clearing of disk cache [ 56.965702][ T5175] BTRFS info (device loop0): force zlib compression, level 3 [ 56.967045][ T5175] BTRFS info (device loop0): enabling disk space caching [ 56.968255][ T5175] BTRFS info (device loop0): disk space caching is enabled [ 56.969986][ T5175] BTRFS info (device loop0): has skinny extents [ 56.980477][ T5175] BTRFS info (device loop0): enabling ssd optimizations [ 56.983425][ T5175] BTRFS info (device loop0): using default commit interval 30s [ 56.984825][ T5175] BTRFS info (device loop0): force clearing of disk cache [ 56.986167][ T5175] BTRFS info (device loop0): clearing free space tree [ 56.987377][ T5175] FAULT_INJECTION: forcing a failure. [ 56.987377][ T5175] name failslab, interval 1, probability 0, space 0, times 0 [ 56.989820][ T5175] CPU: 0 PID: 5175 Comm: syz-executor.0 Tainted: G W syzkaller #0 [ 56.991317][ T5175] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/18/2026 [ 56.993100][ T5175] Call trace: [ 56.993682][ T5175] dump_backtrace+0x0/0x458 [ 56.994464][ T5175] show_stack+0x2c/0x3c [ 56.995166][ T5175] __dump_stack+0x30/0x40 [ 56.995902][ T5175] dump_stack_lvl+0xf4/0x15c [ 56.996707][ T5175] dump_stack+0x1c/0x5c [ 56.997416][ T5175] should_fail+0x3bc/0x514 [ 56.998154][ T5175] __should_failslab+0xbc/0x10c [ 56.999001][ T5175] should_failslab+0x10/0x28 [ 56.999763][ T5175] slab_pre_alloc_hook+0x64/0xe8 [ 57.000568][ T5175] kmem_cache_alloc_trace+0x98/0x3ec [ 57.001476][ T5175] join_transaction+0x10c/0xa5c [ 57.002359][ T5175] start_transaction+0x914/0x13ec [ 57.003199][ T5175] btrfs_start_transaction+0x34/0x44 [ 57.004031][ T5175] btrfs_clear_free_space_tree+0xc4/0x9f0 [ 57.004995][ T5175] btrfs_start_pre_rw_mount+0x240/0x568 [ 57.005911][ T5175] btrfs_remount+0xab0/0x12b0 [ 57.006695][ T5175] legacy_reconfigure+0xf8/0x110 [ 57.007479][ T5175] reconfigure_super+0x1d4/0x6f4 [ 57.008336][ T5175] path_mount+0xc88/0x1008 [ 57.009087][ T5175] __arm64_sys_mount+0x514/0x5f0 [ 57.009889][ T5175] invoke_syscall+0x98/0x2b0 [ 57.010586][ T5175] el0_svc_common+0x138/0x258 [ 57.011387][ T5175] do_el0_svc+0x58/0x13c [ 57.012103][ T5175] el0_svc+0x78/0x1d0 [ 57.012784][ T5175] el0t_64_sync_handler+0xcc/0xe4 [ 57.013621][ T5175] el0t_64_sync+0x1a0/0x1a4 [ 57.016590][ T5175] BTRFS warning (device loop0): failed to clear free space tree: -12 [ 57.147642][ T5197] loop0: detected capacity change from 0 to 32768 [ 57.211503][ T5197] BTRFS: device fsid ed167579-eb65-4e76-9a50-61ac97e9b59d devid 1 transid 8 /dev/loop0 scanned by syz-executor.0 (5197) [ 57.251827][ T5197] BTRFS info (device loop0): using sha256 (sha256-ce) checksum algorithm [ 57.253430][ T5197] BTRFS info (device loop0): turning on flush-on-commit [ 57.254633][ T5197] BTRFS info (device loop0): using default commit interval 30s [ 57.255894][ T5197] BTRFS info (device loop0): force clearing of disk cache [ 57.257029][ T5197] BTRFS info (device loop0): force zlib compression, level 3 [ 57.258272][ T5197] BTRFS info (device loop0): enabling disk space caching [ 57.259733][ T5197] BTRFS info (device loop0): disk space caching is enabled [ 57.261002][ T5197] BTRFS info (device loop0): has skinny extents [ 57.268452][ T5197] BTRFS info (device loop0): enabling ssd optimizations [ 57.272328][ T5197] BTRFS info (device loop0): using default commit interval 30s [ 57.273684][ T5197] BTRFS info (device loop0): force clearing of disk cache [ 57.274992][ T5197] BTRFS info (device loop0): clearing free space tree [ 57.276238][ T5197] BTRFS info (device loop0): clearing compat-ro feature flag for FREE_SPACE_TREE (0x1) [ 57.277886][ T5197] BTRFS info (device loop0): clearing compat-ro feature flag for FREE_SPACE_TREE_VALID (0x2) [ 57.279866][ T5197] FAULT_INJECTION: forcing a failure. [ 57.279866][ T5197] name failslab, interval 1, probability 0, space 0, times 0 [ 57.282199][ T5197] CPU: 1 PID: 5197 Comm: syz-executor.0 Tainted: G W syzkaller #0 [ 57.283781][ T5197] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/18/2026 [ 57.285511][ T5197] Call trace: [ 57.286111][ T5197] dump_backtrace+0x0/0x458 [ 57.286890][ T5197] show_stack+0x2c/0x3c [ 57.287619][ T5197] __dump_stack+0x30/0x40 [ 57.288358][ T5197] dump_stack_lvl+0xf4/0x15c [ 57.289148][ T5197] dump_stack+0x1c/0x5c [ 57.289911][ T5197] should_fail+0x3bc/0x514 [ 57.290652][ T5197] __should_failslab+0xbc/0x10c [ 57.291478][ T5197] should_failslab+0x10/0x28 [ 57.292253][ T5197] slab_pre_alloc_hook+0x64/0xe8 [ 57.293094][ T5197] kmem_cache_alloc+0x94/0x3d4 [ 57.293912][ T5197] btrfs_alloc_path+0x5c/0x68 [ 57.294709][ T5197] btrfs_clear_free_space_tree+0x24c/0x9f0 [ 57.295668][ T5197] btrfs_start_pre_rw_mount+0x240/0x568 [ 57.296609][ T5197] btrfs_remount+0xab0/0x12b0 [ 57.297365][ T5197] legacy_reconfigure+0xf8/0x110 [ 57.298245][ T5197] reconfigure_super+0x1d4/0x6f4 [ 57.299068][ T5197] path_mount+0xc88/0x1008 [ 57.299778][ T5197] __arm64_sys_mount+0x514/0x5f0 [ 57.300550][ T5197] invoke_syscall+0x98/0x2b0 [ 57.301296][ T5197] el0_svc_common+0x138/0x258 [ 57.302022][ T5197] do_el0_svc+0x58/0x13c [ 57.302749][ T5197] el0_svc+0x78/0x1d0 [ 57.303445][ T5197] el0t_64_sync_handler+0xcc/0xe4 [ 57.304342][ T5197] el0t_64_sync+0x1a0/0x1a4 [ 57.306508][ T5197] ------------[ cut here ]------------ [ 57.307487][ T5197] WARNING: CPU: 1 PID: 5197 at fs/btrfs/free-space-tree.c:1267 btrfs_clear_free_space_tree+0x6f4/0x9f0 [ 57.309287][ T5197] Modules linked in: [ 57.309894][ T5197] CPU: 1 PID: 5197 Comm: syz-executor.0 Tainted: G W syzkaller #0 [ 57.311360][ T5197] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/18/2026 [ 57.313013][ T5197] pstate: 62400005 (nZCv daif +PAN -UAO +TCO -DIT -SSBS BTYPE=--) [ 57.314382][ T5197] pc : btrfs_clear_free_space_tree+0x6f4/0x9f0 [ 57.315431][ T5197] lr : btrfs_clear_free_space_tree+0x6f4/0x9f0 [ 57.316467][ T5197] sp : ffff800020c777a0 [ 57.317138][ T5197] x29: ffff800020c77850 x28: 1fffe0001af648d3 x27: ffff70000418eef8 [ 57.318530][ T5197] x26: dfff800000000000 x25: 0000000000000000 x24: 0000000000000006 [ 57.319928][ T5197] x23: 1fffe0001bdc18a5 x22: ffff0000d7b259d0 x21: ffff0000dee0c528 [ 57.321393][ T5197] x20: 00000000fffffff4 x19: ffff0000dee0c4d0 x18: 0000000000000001 [ 57.322816][ T5197] x17: 0000000000000000 x16: ffff80001125f22c x15: 00000000ffffffff [ 57.324259][ T5197] x14: 0000000000000001 x13: 1fffe000341f47ab x12: 0000000000ff0100 [ 57.325620][ T5197] x11: 0000000000000000 x10: 0000000000000000 x9 : 61b8b4764bf76c00 [ 57.327006][ T5197] x8 : 61b8b4764bf76c00 x7 : 0000000000000001 x6 : 0000000000000001 [ 57.328391][ T5197] x5 : ffff800020c770b8 x4 : ffff80001437f3e0 x3 : ffff80000850932c [ 57.329737][ T5197] x2 : 0000000000000001 x1 : 0000000100000000 x0 : 0000000000000026 [ 57.331158][ T5197] Call trace: [ 57.331697][ T5197] btrfs_clear_free_space_tree+0x6f4/0x9f0 [ 57.332693][ T5197] btrfs_start_pre_rw_mount+0x240/0x568 [ 57.333658][ T5197] btrfs_remount+0xab0/0x12b0 [ 57.334417][ T5197] legacy_reconfigure+0xf8/0x110 [ 57.335238][ T5197] reconfigure_super+0x1d4/0x6f4 [ 57.336064][ T5197] path_mount+0xc88/0x1008 [ 57.336813][ T5197] __arm64_sys_mount+0x514/0x5f0 [ 57.337745][ T5197] invoke_syscall+0x98/0x2b0 [ 57.338505][ T5197] el0_svc_common+0x138/0x258 [ 57.339311][ T5197] do_el0_svc+0x58/0x13c [ 57.339943][ T5197] el0_svc+0x78/0x1d0 [ 57.340608][ T5197] el0t_64_sync_handler+0xcc/0xe4 [ 57.341445][ T5197] el0t_64_sync+0x1a0/0x1a4 [ 57.342199][ T5197] irq event stamp: 79306 [ 57.342906][ T5197] hardirqs last enabled at (79305): [] __up_console_sem+0xb4/0xfc [ 57.344524][ T5197] hardirqs last disabled at (79306): [] el1_dbg+0x24/0x80 [ 57.345987][ T5197] softirqs last enabled at (79286): [] handle_softirqs+0xa40/0xbe4 [ 57.347632][ T5197] softirqs last disabled at (79237): [] __irq_exit_rcu+0x240/0x43c [ 57.349129][ T5197] ---[ end trace a09f62afa63081b6 ]--- [ 57.350684][ T5197] BTRFS: error (device loop0) in btrfs_clear_free_space_tree:1267: errno=-12 Out of memory [ 57.353119][ T5197] BTRFS warning (device loop0): failed to clear free space tree: -12 [ 57.380205][ T4357] BTRFS warning (device loop0): page private not zero on page 5341184 [ 57.525528][ T5219] loop0: detected capacity change from 0 to 32768 [ 57.567055][ T5219] BTRFS: device fsid ed167579-eb65-4e76-9a50-61ac97e9b59d devid 1 transid 8 /dev/loop0 scanned by syz-executor.0 (5219) [ 57.574306][ T5219] BTRFS info (device loop0): using sha256 (sha256-ce) checksum algorithm [ 57.575758][ T5219] BTRFS info (device loop0): turning on flush-on-commit [ 57.576994][ T5219] BTRFS info (device loop0): using default commit interval 30s [ 57.578241][ T5219] BTRFS info (device loop0): force clearing of disk cache [ 57.581291][ T5219] BTRFS info (device loop0): force zlib compression, level 3 [ 57.582587][ T5219] BTRFS info (device loop0): enabling disk space caching [ 57.583811][ T5219] BTRFS info (device loop0): disk space caching is enabled [ 57.585051][ T5219] BTRFS info (device loop0): has skinny extents [ 57.592990][ T5219] BTRFS info (device loop0): enabling ssd optimizations [ 57.596016][ T5219] BTRFS info (device loop0): using default commit interval 30s [ 57.597340][ T5219] BTRFS info (device loop0): force clearing of disk cache [ 57.598526][ T5219] BTRFS info (device loop0): clearing free space tree [ 57.600063][ T5219] FAULT_INJECTION: forcing a failure. [ 57.600063][ T5219] name failslab, interval 1, probability 0, space 0, times 0 [ 57.602246][ T5219] CPU: 1 PID: 5219 Comm: syz-executor.0 Tainted: G W syzkaller #0 [ 57.603826][ T5219] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/18/2026 [ 57.605533][ T5219] Call trace: [ 57.606083][ T5219] dump_backtrace+0x0/0x458 [ 57.606831][ T5219] show_stack+0x2c/0x3c [ 57.607561][ T5219] __dump_stack+0x30/0x40 [ 57.608363][ T5219] dump_stack_lvl+0xf4/0x15c [ 57.609153][ T5219] dump_stack+0x1c/0x5c [ 57.609786][ T5219] should_fail+0x3bc/0x514 [ 57.610449][ T5219] __should_failslab+0xbc/0x10c [ 57.611255][ T5219] should_failslab+0x10/0x28 [ 57.612044][ T5219] slab_pre_alloc_hook+0x64/0xe8 [ 57.612921][ T5219] kmem_cache_alloc_trace+0x98/0x3ec [ 57.613819][ T5219] join_transaction+0x10c/0xa5c [ 57.614594][ T5219] start_transaction+0x914/0x13ec [ 57.615480][ T5219] btrfs_start_transaction+0x34/0x44 [ 57.616364][ T5219] btrfs_clear_free_space_tree+0xc4/0x9f0 [ 57.617349][ T5219] btrfs_start_pre_rw_mount+0x240/0x568 [ 57.618233][ T5219] btrfs_remount+0xab0/0x12b0 [ 57.619041][ T5219] legacy_reconfigure+0xf8/0x110 [ 57.619874][ T5219] reconfigure_super+0x1d4/0x6f4 [ 57.620767][ T5219] path_mount+0xc88/0x1008 [ 57.621563][ T5219] __arm64_sys_mount+0x514/0x5f0 [ 57.622429][ T5219] invoke_syscall+0x98/0x2b0 [ 57.623189][ T5219] el0_svc_common+0x138/0x258 [ 57.624066][ T5219] do_el0_svc+0x58/0x13c [ 57.624821][ T5219] el0_svc+0x78/0x1d0 [ 57.625516][ T5219] el0t_64_sync_handler+0xcc/0xe4 [ 57.626303][ T5219] el0t_64_sync+0x1a0/0x1a4 [ 57.628592][ T5219] BTRFS warning (device loop0): failed to clear free space tree: -12 [ 57.762138][ T5241] loop0: detected capacity change from 0 to 32768 [ 57.850428][ T5241] BTRFS: device fsid ed167579-eb65-4e76-9a50-61ac97e9b59d devid 1 transid 8 /dev/loop0 scanned by syz-executor.0 (5241) [ 57.853671][ T5241] BTRFS info (device loop0): using sha256 (sha256-ce) checksum algorithm [ 57.855154][ T5241] BTRFS info (device loop0): turning on flush-on-commit [ 57.856589][ T5241] BTRFS info (device loop0): using default commit interval 30s [ 57.857879][ T5241] BTRFS info (device loop0): force clearing of disk cache [ 57.859039][ T5241] BTRFS info (device loop0): force zlib compression, level 3 [ 57.860269][ T5241] BTRFS info (device loop0): enabling disk space caching [ 57.861411][ T5241] BTRFS info (device loop0): disk space caching is enabled [ 57.862559][ T5241] BTRFS info (device loop0): has skinny extents [ 57.870714][ T5241] BTRFS info (device loop0): enabling ssd optimizations [ 57.873602][ T5241] BTRFS info (device loop0): using default commit interval 30s [ 57.874912][ T5241] BTRFS info (device loop0): force clearing of disk cache [ 57.876120][ T5241] BTRFS info (device loop0): clearing free space tree [ 57.877263][ T5241] BTRFS info (device loop0): clearing compat-ro feature flag for FREE_SPACE_TREE (0x1) [ 57.878834][ T5241] BTRFS info (device loop0): clearing compat-ro feature flag for FREE_SPACE_TREE_VALID (0x2) [ 57.880587][ T5241] FAULT_INJECTION: forcing a failure. [ 57.880587][ T5241] name failslab, interval 1, probability 0, space 0, times 0 [ 57.882653][ T5241] CPU: 0 PID: 5241 Comm: syz-executor.0 Tainted: G W syzkaller #0 [ 57.884154][ T5241] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/18/2026 [ 57.885820][ T5241] Call trace: [ 57.886356][ T5241] dump_backtrace+0x0/0x458 [ 57.887151][ T5241] show_stack+0x2c/0x3c [ 57.887803][ T5241] __dump_stack+0x30/0x40 [ 57.888512][ T5241] dump_stack_lvl+0xf4/0x15c [ 57.889292][ T5241] dump_stack+0x1c/0x5c [ 57.889964][ T5241] should_fail+0x3bc/0x514 [ 57.890687][ T5241] __should_failslab+0xbc/0x10c [ 57.891525][ T5241] should_failslab+0x10/0x28 [ 57.892251][ T5241] slab_pre_alloc_hook+0x64/0xe8 [ 57.893090][ T5241] kmem_cache_alloc+0x94/0x3d4 [ 57.893875][ T5241] btrfs_alloc_path+0x5c/0x68 [ 57.894598][ T5241] btrfs_clear_free_space_tree+0x24c/0x9f0 [ 57.895599][ T5241] btrfs_start_pre_rw_mount+0x240/0x568 [ 57.896544][ T5241] btrfs_remount+0xab0/0x12b0 [ 57.897302][ T5241] legacy_reconfigure+0xf8/0x110 [ 57.898107][ T5241] reconfigure_super+0x1d4/0x6f4 [ 57.898925][ T5241] path_mount+0xc88/0x1008 [ 57.899694][ T5241] __arm64_sys_mount+0x514/0x5f0 [ 57.900587][ T5241] invoke_syscall+0x98/0x2b0 [ 57.901400][ T5241] el0_svc_common+0x138/0x258 [ 57.902204][ T5241] do_el0_svc+0x58/0x13c [ 57.902897][ T5241] el0_svc+0x78/0x1d0 [ 57.903546][ T5241] el0t_64_sync_handler+0xcc/0xe4 [ 57.904378][ T5241] el0t_64_sync+0x1a0/0x1a4 [ 57.905810][ T5241] ------------[ cut here ]------------ [ 57.906807][ T5241] WARNING: CPU: 0 PID: 5241 at fs/btrfs/free-space-tree.c:1267 btrfs_clear_free_space_tree+0x6f4/0x9f0 [ 57.908610][ T5241] Modules linked in: [ 57.909298][ T5241] CPU: 0 PID: 5241 Comm: syz-executor.0 Tainted: G W syzkaller #0 [ 57.910894][ T5241] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/18/2026 [ 57.912580][ T5241] pstate: 62400005 (nZCv daif +PAN -UAO +TCO -DIT -SSBS BTYPE=--) [ 57.913921][ T5241] pc : btrfs_clear_free_space_tree+0x6f4/0x9f0 [ 57.914911][ T5241] lr : btrfs_clear_free_space_tree+0x6f4/0x9f0 [ 57.915961][ T5241] sp : ffff8000210777a0 [ 57.916623][ T5241] x29: ffff800021077850 x28: 1fffe0001a5128d3 x27: ffff70000420eef8 [ 57.917996][ T5241] x26: dfff800000000000 x25: 0000000000000000 x24: 0000000000000006 [ 57.919357][ T5241] x23: 1fffe0001bda9c8f x22: ffff0000d28959d0 x21: ffff0000ded4e478 [ 57.920742][ T5241] x20: 00000000fffffff4 x19: ffff0000ded4e420 x18: 0000000000000001 [ 57.922074][ T5241] x17: 0000000000000000 x16: ffff80001125f22c x15: 00000000ffffffff [ 57.923289][ T5241] x14: 0000000000000001 x13: 1fffe000341f05ab x12: 0000000000ff0100 [ 57.924556][ T5241] x11: 0000000000000000 x10: 0000000000000000 x9 : b9b301fe5efb5000 [ 57.925755][ T5241] x8 : b9b301fe5efb5000 x7 : 0000000000000001 x6 : 0000000000000001 [ 57.927026][ T5241] x5 : ffff8000210770b8 x4 : ffff80001437f3e0 x3 : ffff80000850932c [ 57.928431][ T5241] x2 : 0000000000000001 x1 : 0000000100000000 x0 : 0000000000000026 [ 57.929788][ T5241] Call trace: [ 57.930340][ T5241] btrfs_clear_free_space_tree+0x6f4/0x9f0 [ 57.931324][ T5241] btrfs_start_pre_rw_mount+0x240/0x568 [ 57.932155][ T5241] btrfs_remount+0xab0/0x12b0 [ 57.932906][ T5241] legacy_reconfigure+0xf8/0x110 [ 57.933729][ T5241] reconfigure_super+0x1d4/0x6f4 [ 57.934567][ T5241] path_mount+0xc88/0x1008 [ 57.935353][ T5241] __arm64_sys_mount+0x514/0x5f0 [ 57.936199][ T5241] invoke_syscall+0x98/0x2b0 [ 57.937022][ T5241] el0_svc_common+0x138/0x258 [ 57.937780][ T5241] do_el0_svc+0x58/0x13c [ 57.938445][ T5241] el0_svc+0x78/0x1d0 [ 57.939039][ T5241] el0t_64_sync_handler+0xcc/0xe4 [ 57.939794][ T5241] el0t_64_sync+0x1a0/0x1a4 [ 57.940456][ T5241] irq event stamp: 78934 [ 57.941077][ T5241] hardirqs last enabled at (78933): [] __up_console_sem+0xb4/0xfc [ 57.942604][ T5241] hardirqs last disabled at (78934): [] el1_dbg+0x24/0x80 [ 57.944055][ T5241] softirqs last enabled at (78914): [] handle_softirqs+0xa40/0xbe4 [ 57.945660][ T5241] softirqs last disabled at (78893): [] __irq_exit_rcu+0x240/0x43c [ 57.947213][ T5241] ---[ end trace a09f62afa63081b7 ]--- [ 57.949315][ T5241] BTRFS: error (device loop0) in btrfs_clear_free_space_tree:1267: errno=-12 Out of memory [ 57.950947][ T5241] BTRFS warning (device loop0): failed to clear free space tree: -12 [ 57.976884][ T4357] BTRFS warning (device loop0): page private not zero on page 5341184 [ 58.119387][ T5263] loop0: detected capacity change from 0 to 32768 [ 58.178969][ T4667] Bluetooth: hci0: command 0x0419 tx timeout [ 58.191504][ T5263] BTRFS: device fsid ed167579-eb65-4e76-9a50-61ac97e9b59d devid 1 transid 8 /dev/loop0 scanned by syz-executor.0 (5263) [ 58.195026][ T5263] BTRFS info (device loop0): using sha256 (sha256-ce) checksum algorithm [ 58.196465][ T5263] BTRFS info (device loop0): turning on flush-on-commit [ 58.197645][ T5263] BTRFS info (device loop0): using default commit interval 30s [ 58.199016][ T5263] BTRFS info (device loop0): force clearing of disk cache [ 58.200166][ T5263] BTRFS info (device loop0): force zlib compression, level 3 [ 58.201443][ T5263] BTRFS info (device loop0): enabling disk space caching [ 58.202637][ T5263] BTRFS info (device loop0): disk space caching is enabled [ 58.203910][ T5263] BTRFS info (device loop0): has skinny extents [ 58.211108][ T5263] BTRFS info (device loop0): enabling ssd optimizations [ 58.214093][ T5263] BTRFS info (device loop0): using default commit interval 30s [ 58.215392][ T5263] BTRFS info (device loop0): force clearing of disk cache [ 58.216652][ T5263] BTRFS info (device loop0): clearing free space tree [ 58.217866][ T5263] FAULT_INJECTION: forcing a failure. [ 58.217866][ T5263] name failslab, interval 1, probability 0, space 0, times 0 [ 58.220431][ T5263] CPU: 1 PID: 5263 Comm: syz-executor.0 Tainted: G W syzkaller #0 [ 58.221930][ T5263] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/18/2026 [ 58.223571][ T5263] Call trace: [ 58.224118][ T5263] dump_backtrace+0x0/0x458 [ 58.224880][ T5263] show_stack+0x2c/0x3c [ 58.225511][ T5263] __dump_stack+0x30/0x40 [ 58.226247][ T5263] dump_stack_lvl+0xf4/0x15c [ 58.227047][ T5263] dump_stack+0x1c/0x5c [ 58.227755][ T5263] should_fail+0x3bc/0x514 [ 58.228464][ T5263] __should_failslab+0xbc/0x10c [ 58.229306][ T5263] should_failslab+0x10/0x28 [ 58.230061][ T5263] slab_pre_alloc_hook+0x64/0xe8 [ 58.230941][ T5263] kmem_cache_alloc_trace+0x98/0x3ec [ 58.231837][ T5263] join_transaction+0x10c/0xa5c [ 58.232655][ T5263] start_transaction+0x914/0x13ec [ 58.233531][ T5263] btrfs_start_transaction+0x34/0x44 [ 58.234433][ T5263] btrfs_clear_free_space_tree+0xc4/0x9f0 [ 58.235412][ T5263] btrfs_start_pre_rw_mount+0x240/0x568 [ 58.236355][ T5263] btrfs_remount+0xab0/0x12b0 [ 58.237183][ T5263] legacy_reconfigure+0xf8/0x110 [ 58.238062][ T5263] reconfigure_super+0x1d4/0x6f4 [ 58.238922][ T5263] path_mount+0xc88/0x1008 [ 58.239666][ T5263] __arm64_sys_mount+0x514/0x5f0 [ 58.240461][ T5263] invoke_syscall+0x98/0x2b0 [ 58.241244][ T5263] el0_svc_common+0x138/0x258 [ 58.241971][ T5263] do_el0_svc+0x58/0x13c [ 58.242635][ T5263] el0_svc+0x78/0x1d0 [ 58.243293][ T5263] el0t_64_sync_handler+0xcc/0xe4 [ 58.244058][ T5263] el0t_64_sync+0x1a0/0x1a4 [ 58.246311][ T5263] BTRFS warning (device loop0): failed to clear free space tree: -12 [ 58.274318][ T4361] BTRFS: device fsid ed167579-eb65-4e76-9a50-61ac97e9b59d devid 1 transid 9 /dev/loop0 scanned by udevd (4361) [ 58.390234][ T5285] loop0: detected capacity change from 0 to 32768 [ 58.471273][ T5285] BTRFS info (device loop0): using sha256 (sha256-ce) checksum algorithm [ 58.472819][ T5285] BTRFS info (device loop0): turning on flush-on-commit [ 58.474176][ T5285] BTRFS info (device loop0): using default commit interval 30s [ 58.475358][ T5285] BTRFS info (device loop0): force clearing of disk cache [ 58.476494][ T5285] BTRFS info (device loop0): force zlib compression, level 3 [ 58.477677][ T5285] BTRFS info (device loop0): enabling disk space caching [ 58.487784][ T5285] FAULT_INJECTION: forcing a failure. [ 58.487784][ T5285] name failslab, interval 1, probability 0, space 0, times 0 [ 58.489913][ T5285] CPU: 0 PID: 5285 Comm: syz-executor.0 Tainted: G W syzkaller #0 [ 58.491304][ T5285] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/18/2026 [ 58.492856][ T5285] Call trace: [ 58.493391][ T5285] dump_backtrace+0x0/0x458 [ 58.494126][ T5285] show_stack+0x2c/0x3c [ 58.494824][ T5285] __dump_stack+0x30/0x40 [ 58.495593][ T5285] dump_stack_lvl+0xf4/0x15c [ 58.496345][ T5285] dump_stack+0x1c/0x5c [ 58.497041][ T5285] should_fail+0x3bc/0x514 [ 58.497731][ T5285] __should_failslab+0xbc/0x10c [ 58.498432][ T5285] should_failslab+0x10/0x28 [ 58.499164][ T5285] slab_pre_alloc_hook+0x64/0xe8 [ 58.500010][ T5285] kmem_cache_alloc+0x94/0x3d4 [ 58.500885][ T5285] btrfs_alloc_path+0x5c/0x68 [ 58.501657][ T5285] btrfs_clear_free_space_tree+0x24c/0x9f0 [ 58.502712][ T5285] btrfs_start_pre_rw_mount+0x240/0x568 [ 58.503657][ T5285] btrfs_remount+0xab0/0x12b0 [ 58.504477][ T5285] legacy_reconfigure+0xf8/0x110 [ 58.505349][ T5285] reconfigure_super+0x1d4/0x6f4 [ 58.506186][ T5285] path_mount+0xc88/0x1008 [ 58.506878][ T5285] __arm64_sys_mount+0x514/0x5f0 [ 58.507783][ T5285] invoke_syscall+0x98/0x2b0 [ 58.508590][ T5285] el0_svc_common+0x138/0x258 [ 58.509365][ T5285] do_el0_svc+0x58/0x13c [ 58.510091][ T5285] el0_svc+0x78/0x1d0 [ 58.510770][ T5285] el0t_64_sync_handler+0xcc/0xe4 [ 58.511588][ T5285] el0t_64_sync+0x1a0/0x1a4 [ 58.512482][ T5285] ------------[ cut here ]------------ [ 58.513462][ T5285] WARNING: CPU: 0 PID: 5285 at fs/btrfs/free-space-tree.c:1267 btrfs_clear_free_space_tree+0x6f4/0x9f0 [ 58.515001][ T5285] Modules linked in: [ 58.515595][ T5285] CPU: 0 PID: 5285 Comm: syz-executor.0 Tainted: G W syzkaller #0 [ 58.517068][ T5285] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/18/2026 [ 58.518650][ T5285] pstate: 62400005 (nZCv daif +PAN -UAO +TCO -DIT -SSBS BTYPE=--) [ 58.520016][ T5285] pc : btrfs_clear_free_space_tree+0x6f4/0x9f0 [ 58.521064][ T5285] lr : btrfs_clear_free_space_tree+0x6f4/0x9f0 [ 58.522122][ T5285] sp : ffff8000219377a0 [ 58.522808][ T5285] x29: ffff800021937850 x28: 1fffe0001996b0d3 x27: ffff700004326ef8 [ 58.524204][ T5285] x26: dfff800000000000 x25: 0000000000000000 x24: 0000000000000006 [ 58.525563][ T5285] x23: 1fffe0001bda9c63 x22: ffff0000ccb599d0 x21: ffff0000ded4e318 [ 58.526937][ T5285] x20: 00000000fffffff4 x19: ffff0000ded4e2c0 x18: 0000000000000001 [ 58.528254][ T5285] x17: 0000000000000000 x16: ffff800008304c04 x15: 00000000ffffffff [ 58.529686][ T5285] x14: 0000000000000001 x13: 1ffff00004326e14 x12: 0000000000ff0100 [ 58.531043][ T5285] x11: 0000000000000000 x10: 0000000000000000 x9 : cefa267977dafe00 [ 58.532372][ T5285] x8 : cefa267977dafe00 x7 : 0000000000000001 x6 : 0000000000000001 [ 58.533732][ T5285] x5 : ffff8000219370b8 x4 : ffff80001437f3e0 x3 : ffff800008304d14 [ 58.535104][ T5285] x2 : 0000000000000001 x1 : 0000000100000000 x0 : 0000000000000026 [ 58.536355][ T5285] Call trace: [ 58.536893][ T5285] btrfs_clear_free_space_tree+0x6f4/0x9f0 [ 58.537856][ T5285] btrfs_start_pre_rw_mount+0x240/0x568 [ 58.538811][ T5285] btrfs_remount+0xab0/0x12b0 [ 58.539619][ T5285] legacy_reconfigure+0xf8/0x110 [ 58.540455][ T5285] reconfigure_super+0x1d4/0x6f4 [ 58.541307][ T5285] path_mount+0xc88/0x1008 [ 58.542041][ T5285] __arm64_sys_mount+0x514/0x5f0 [ 58.542902][ T5285] invoke_syscall+0x98/0x2b0 [ 58.543665][ T5285] el0_svc_common+0x138/0x258 [ 58.544523][ T5285] do_el0_svc+0x58/0x13c [ 58.545268][ T5285] el0_svc+0x78/0x1d0 [ 58.545959][ T5285] el0t_64_sync_handler+0xcc/0xe4 [ 58.546845][ T5285] el0t_64_sync+0x1a0/0x1a4 [ 58.547585][ T5285] irq event stamp: 79046 [ 58.548219][ T5285] hardirqs last enabled at (79045): [] __up_console_sem+0xb4/0xfc [ 58.549828][ T5285] hardirqs last disabled at (79046): [] el1_dbg+0x24/0x80 [ 58.551259][ T5285] softirqs last enabled at (79026): [] handle_softirqs+0xa40/0xbe4 [ 58.552909][ T5285] softirqs last disabled at (79007): [] __irq_exit_rcu+0x240/0x43c [ 58.554538][ T5285] ---[ end trace a09f62afa63081b8 ]--- [ 58.556074][ T5285] BTRFS: error (device loop0) in btrfs_clear_free_space_tree:1267: errno=-12 Out of memory [ 58.557639][ T5285] BTRFS warning (device loop0): failed to clear free space tree: -12 [ 58.585912][ T4357] BTRFS warning (device loop0): page private not zero on page 5341184 [ 58.695164][ T5307] loop0: detected capacity change from 0 to 32768 [ 58.700206][ T5307] BTRFS: device fsid ed167579-eb65-4e76-9a50-61ac97e9b59d devid 1 transid 8 /dev/loop0 scanned by syz-executor.0 (5307) [ 58.715864][ T5307] FAULT_INJECTION: forcing a failure. [ 58.715864][ T5307] name failslab, interval 1, probability 0, space 0, times 0 [ 58.718132][ T5307] CPU: 0 PID: 5307 Comm: syz-executor.0 Tainted: G W syzkaller #0 [ 58.719702][ T5307] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/18/2026 [ 58.721519][ T5307] Call trace: [ 58.722067][ T5307] dump_backtrace+0x0/0x458 [ 58.722838][ T5307] show_stack+0x2c/0x3c [ 58.723530][ T5307] __dump_stack+0x30/0x40 [ 58.724310][ T5307] dump_stack_lvl+0xf4/0x15c [ 58.725111][ T5307] dump_stack+0x1c/0x5c [ 58.725798][ T5307] should_fail+0x3bc/0x514 [ 58.726594][ T5307] __should_failslab+0xbc/0x10c [ 58.727467][ T5307] should_failslab+0x10/0x28 [ 58.728324][ T5307] slab_pre_alloc_hook+0x64/0xe8 [ 58.729157][ T5307] kmem_cache_alloc_trace+0x98/0x3ec [ 58.730051][ T5307] join_transaction+0x10c/0xa5c [ 58.730874][ T5307] start_transaction+0x914/0x13ec [ 58.731705][ T5307] btrfs_start_transaction+0x34/0x44 [ 58.732623][ T5307] btrfs_clear_free_space_tree+0xc4/0x9f0 [ 58.733596][ T5307] btrfs_start_pre_rw_mount+0x240/0x568 [ 58.734601][ T5307] btrfs_remount+0xab0/0x12b0 [ 58.735421][ T5307] legacy_reconfigure+0xf8/0x110 [ 58.736274][ T5307] reconfigure_super+0x1d4/0x6f4 [ 58.737109][ T5307] path_mount+0xc88/0x1008 [ 58.737831][ T5307] __arm64_sys_mount+0x514/0x5f0 [ 58.738646][ T5307] invoke_syscall+0x98/0x2b0 [ 58.739426][ T5307] el0_svc_common+0x138/0x258 [ 58.740225][ T5307] do_el0_svc+0x58/0x13c [ 58.740987][ T5307] el0_svc+0x78/0x1d0 [ 58.741631][ T5307] el0t_64_sync_handler+0xcc/0xe4 [ 58.742470][ T5307] el0t_64_sync+0x1a0/0x1a4 [ 58.743442][ T5307] BTRFS warning (device loop0): failed to clear free space tree: -12 [ 58.776538][ T4361] BTRFS: device fsid ed167579-eb65-4e76-9a50-61ac97e9b59d devid 1 transid 9 /dev/loop0 scanned by udevd (4361) [ 58.876217][ T5328] loop0: detected capacity change from 0 to 32768 [ 58.889356][ T5328] FAULT_INJECTION: forcing a failure. [ 58.889356][ T5328] name failslab, interval 1, probability 0, space 0, times 0 [ 58.891558][ T5328] CPU: 0 PID: 5328 Comm: syz-executor.0 Tainted: G W syzkaller #0 [ 58.893032][ T5328] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/18/2026 [ 58.894584][ T5328] Call trace: [ 58.895094][ T5328] dump_backtrace+0x0/0x458 [ 58.895857][ T5328] show_stack+0x2c/0x3c [ 58.896571][ T5328] __dump_stack+0x30/0x40 [ 58.897341][ T5328] dump_stack_lvl+0xf4/0x15c [ 58.898105][ T5328] dump_stack+0x1c/0x5c [ 58.898784][ T5328] should_fail+0x3bc/0x514 [ 58.899524][ T5328] __should_failslab+0xbc/0x10c [ 58.900282][ T5328] should_failslab+0x10/0x28 [ 58.901034][ T5328] slab_pre_alloc_hook+0x64/0xe8 [ 58.901825][ T5328] kmem_cache_alloc_trace+0x98/0x3ec [ 58.902654][ T5328] join_transaction+0x10c/0xa5c [ 58.903409][ T5328] start_transaction+0x914/0x13ec [ 58.904208][ T5328] btrfs_start_transaction+0x34/0x44 [ 58.905067][ T5328] btrfs_clear_free_space_tree+0xc4/0x9f0 [ 58.905989][ T5328] btrfs_start_pre_rw_mount+0x240/0x568 [ 58.906892][ T5328] btrfs_remount+0xab0/0x12b0 [ 58.907715][ T5328] legacy_reconfigure+0xf8/0x110 [ 58.908552][ T5328] reconfigure_super+0x1d4/0x6f4 [ 58.909389][ T5328] path_mount+0xc88/0x1008 [ 58.910078][ T5328] __arm64_sys_mount+0x514/0x5f0 [ 58.910937][ T5328] invoke_syscall+0x98/0x2b0 [ 58.911688][ T5328] el0_svc_common+0x138/0x258 [ 58.912511][ T5328] do_el0_svc+0x58/0x13c [ 58.913225][ T5328] el0_svc+0x78/0x1d0 [ 58.913888][ T5328] el0t_64_sync_handler+0xcc/0xe4 [ 58.914726][ T5328] el0t_64_sync+0x1a0/0x1a4 [ 58.916024][ T5328] BTRFS warning (device loop0): failed to clear free space tree: -12 [ 59.101482][ T5350] BTRFS: device fsid ed167579-eb65-4e76-9a50-61ac97e9b59d devid 1 transid 8 /dev/loop0 scanned by syz-executor.0 (5350) [ 59.129701][ T5350] FAULT_INJECTION: forcing a failure. [ 59.129701][ T5350] name failslab, interval 1, probability 0, space 0, times 0 [ 59.132362][ T5350] CPU: 0 PID: 5350 Comm: syz-executor.0 Tainted: G W syzkaller #0 [ 59.133816][ T5350] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/18/2026 [ 59.135547][ T5350] Call trace: [ 59.136111][ T5350] dump_backtrace+0x0/0x458 [ 59.136847][ T5350] show_stack+0x2c/0x3c [ 59.137524][ T5350] __dump_stack+0x30/0x40 [ 59.138273][ T5350] dump_stack_lvl+0xf4/0x15c [ 59.139099][ T5350] dump_stack+0x1c/0x5c [ 59.139850][ T5350] should_fail+0x3bc/0x514 [ 59.140617][ T5350] __should_failslab+0xbc/0x10c [ 59.141490][ T5350] should_failslab+0x10/0x28 [ 59.142258][ T5350] slab_pre_alloc_hook+0x64/0xe8 [ 59.143124][ T5350] kmem_cache_alloc+0x94/0x3d4 [ 59.143971][ T5350] btrfs_alloc_path+0x5c/0x68 [ 59.144690][ T5350] btrfs_clear_free_space_tree+0x24c/0x9f0 [ 59.145663][ T5350] btrfs_start_pre_rw_mount+0x240/0x568 [ 59.146568][ T5350] btrfs_remount+0xab0/0x12b0 [ 59.147394][ T5350] legacy_reconfigure+0xf8/0x110 [ 59.148227][ T5350] reconfigure_super+0x1d4/0x6f4 [ 59.149045][ T5350] path_mount+0xc88/0x1008 [ 59.149793][ T5350] __arm64_sys_mount+0x514/0x5f0 [ 59.150582][ T5350] invoke_syscall+0x98/0x2b0 [ 59.151300][ T5350] el0_svc_common+0x138/0x258 [ 59.152032][ T5350] do_el0_svc+0x58/0x13c [ 59.152681][ T5350] el0_svc+0x78/0x1d0 [ 59.153488][ T5350] el0t_64_sync_handler+0xcc/0xe4 [ 59.154358][ T5350] el0t_64_sync+0x1a0/0x1a4 [ 59.157981][ T5350] ------------[ cut here ]------------ [ 59.158990][ T5350] WARNING: CPU: 0 PID: 5350 at fs/btrfs/free-space-tree.c:1267 btrfs_clear_free_space_tree+0x6f4/0x9f0 [ 59.160764][ T5350] Modules linked in: [ 59.161438][ T5350] CPU: 0 PID: 5350 Comm: syz-executor.0 Tainted: G W syzkaller #0 [ 59.162935][ T5350] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/18/2026 [ 59.164607][ T5350] pstate: 62400005 (nZCv daif +PAN -UAO +TCO -DIT -SSBS BTYPE=--) [ 59.165908][ T5350] pc : btrfs_clear_free_space_tree+0x6f4/0x9f0 [ 59.166959][ T5350] lr : btrfs_clear_free_space_tree+0x6f4/0x9f0 [ 59.167997][ T5350] sp : ffff800021ca77a0 [ 59.168687][ T5350] x29: ffff800021ca7850 x28: 1fffe0001a2918d3 x27: ffff700004394ef8 [ 59.170009][ T5350] x26: dfff800000000000 x25: 0000000000000000 x24: 0000000000000006 [ 59.171366][ T5350] x23: 1fffe0001bda9cd1 x22: ffff0000d148d9d0 x21: ffff0000ded4e688 [ 59.172711][ T5350] x20: 00000000fffffff4 x19: ffff0000ded4e630 x18: 0000000000000001 [ 59.173992][ T5350] x17: 0000000000000000 x16: ffff80001125f22c x15: 00000000ffffffff [ 59.175361][ T5350] x14: 0000000000000001 x13: 1fffe000341f05ab x12: 0000000000ff0100 [ 59.176718][ T5350] x11: 0000000000000000 x10: 0000000000000000 x9 : b10c5e36c9b58900 [ 59.178116][ T5350] x8 : b10c5e36c9b58900 x7 : 0000000000000001 x6 : 0000000000000001 [ 59.179460][ T5350] x5 : ffff800021ca70b8 x4 : ffff80001437f3e0 x3 : ffff80000850932c [ 59.180808][ T5350] x2 : 0000000000000001 x1 : 0000000100000000 x0 : 0000000000000026 [ 59.182264][ T5350] Call trace: [ 59.182793][ T5350] btrfs_clear_free_space_tree+0x6f4/0x9f0 [ 59.183759][ T5350] btrfs_start_pre_rw_mount+0x240/0x568 [ 59.184680][ T5350] btrfs_remount+0xab0/0x12b0 [ 59.185449][ T5350] legacy_reconfigure+0xf8/0x110 [ 59.186232][ T5350] reconfigure_super+0x1d4/0x6f4 [ 59.187063][ T5350] path_mount+0xc88/0x1008 [ 59.187767][ T5350] __arm64_sys_mount+0x514/0x5f0 [ 59.188576][ T5350] invoke_syscall+0x98/0x2b0 [ 59.189432][ T5350] el0_svc_common+0x138/0x258 [ 59.190226][ T5350] do_el0_svc+0x58/0x13c [ 59.190935][ T5350] el0_svc+0x78/0x1d0 [ 59.191614][ T5350] el0t_64_sync_handler+0xcc/0xe4 [ 59.192489][ T5350] el0t_64_sync+0x1a0/0x1a4 [ 59.193294][ T5350] irq event stamp: 79276 [ 59.194034][ T5350] hardirqs last enabled at (79275): [] __up_console_sem+0xb4/0xfc [ 59.195661][ T5350] hardirqs last disabled at (79276): [] el1_dbg+0x24/0x80 [ 59.197135][ T5350] softirqs last enabled at (79256): [] handle_softirqs+0xa40/0xbe4 [ 59.198758][ T5350] softirqs last disabled at (79211): [] __irq_exit_rcu+0x240/0x43c [ 59.200355][ T5350] ---[ end trace a09f62afa63081b9 ]--- [ 59.203351][ T5350] BTRFS: error (device loop0) in btrfs_clear_free_space_tree:1267: errno=-12 Out of memory [ 59.204994][ T5350] BTRFS warning (device loop0): failed to clear free space tree: -12 [ 59.230670][ T4357] BTRFS warning (device loop0): page private not zero on page 5341184 [ 59.421894][ T5372] BTRFS: device fsid ed167579-eb65-4e76-9a50-61ac97e9b59d devid 1 transid 8 /dev/loop0 scanned by syz-executor.0 (5372) [ 59.444824][ T5372] FAULT_INJECTION: forcing a failure. [ 59.444824][ T5372] name failslab, interval 1, probability 0, space 0, times 0 [ 59.446893][ T5372] CPU: 0 PID: 5372 Comm: syz-executor.0 Tainted: G W syzkaller #0 [ 59.448346][ T5372] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/18/2026 [ 59.450044][ T5372] Call trace: [ 59.450591][ T5372] dump_backtrace+0x0/0x458 [ 59.451361][ T5372] show_stack+0x2c/0x3c [ 59.452062][ T5372] __dump_stack+0x30/0x40 [ 59.452814][ T5372] dump_stack_lvl+0xf4/0x15c [ 59.453545][ T5372] dump_stack+0x1c/0x5c [ 59.454243][ T5372] should_fail+0x3bc/0x514 [ 59.454957][ T5372] __should_failslab+0xbc/0x10c [ 59.455770][ T5372] should_failslab+0x10/0x28 [ 59.456533][ T5372] slab_pre_alloc_hook+0x64/0xe8 [ 59.457361][ T5372] kmem_cache_alloc+0x94/0x3d4 [ 59.458187][ T5372] start_transaction+0x4d0/0x13ec [ 59.459055][ T5372] btrfs_start_transaction+0x34/0x44 [ 59.459920][ T5372] btrfs_clear_free_space_tree+0xc4/0x9f0 [ 59.460880][ T5372] btrfs_start_pre_rw_mount+0x240/0x568 [ 59.461789][ T5372] btrfs_remount+0xab0/0x12b0 [ 59.462583][ T5372] legacy_reconfigure+0xf8/0x110 [ 59.463397][ T5372] reconfigure_super+0x1d4/0x6f4 [ 59.464209][ T5372] path_mount+0xc88/0x1008 [ 59.464908][ T5372] __arm64_sys_mount+0x514/0x5f0 [ 59.465719][ T5372] invoke_syscall+0x98/0x2b0 [ 59.466444][ T5372] el0_svc_common+0x138/0x258 [ 59.467245][ T5372] do_el0_svc+0x58/0x13c [ 59.467987][ T5372] el0_svc+0x78/0x1d0 [ 59.468663][ T5372] el0t_64_sync_handler+0xcc/0xe4 [ 59.469501][ T5372] el0t_64_sync+0x1a0/0x1a4 [ 59.471980][ T5372] BTRFS warning (device loop0): failed to clear free space tree: -12 [ 59.605539][ T5394] BTRFS: device fsid ed167579-eb65-4e76-9a50-61ac97e9b59d devid 1 transid 8 /dev/loop0 scanned by syz-executor.0 (5394) [ 59.624875][ T5394] FAULT_INJECTION: forcing a failure. [ 59.624875][ T5394] name failslab, interval 1, probability 0, space 0, times 0 [ 59.627130][ T5394] CPU: 0 PID: 5394 Comm: syz-executor.0 Tainted: G W syzkaller #0 [ 59.628644][ T5394] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/18/2026 [ 59.630359][ T5394] Call trace: [ 59.630886][ T5394] dump_backtrace+0x0/0x458 [ 59.631685][ T5394] show_stack+0x2c/0x3c [ 59.632384][ T5394] __dump_stack+0x30/0x40 [ 59.633063][ T5394] dump_stack_lvl+0xf4/0x15c [ 59.633792][ T5394] dump_stack+0x1c/0x5c [ 59.634489][ T5394] should_fail+0x3bc/0x514 [ 59.635176][ T5394] __should_failslab+0xbc/0x10c [ 59.635936][ T5394] should_failslab+0x10/0x28 [ 59.636743][ T5394] slab_pre_alloc_hook+0x64/0xe8 [ 59.637553][ T5394] kmem_cache_alloc+0x94/0x3d4 [ 59.638352][ T5394] btrfs_alloc_path+0x5c/0x68 [ 59.639143][ T5394] btrfs_clear_free_space_tree+0x24c/0x9f0 [ 59.640125][ T5394] btrfs_start_pre_rw_mount+0x240/0x568 [ 59.640999][ T5394] btrfs_remount+0xab0/0x12b0 [ 59.641762][ T5394] legacy_reconfigure+0xf8/0x110 [ 59.642569][ T5394] reconfigure_super+0x1d4/0x6f4 [ 59.643456][ T5394] path_mount+0xc88/0x1008 [ 59.644245][ T5394] __arm64_sys_mount+0x514/0x5f0 [ 59.645038][ T5394] invoke_syscall+0x98/0x2b0 [ 59.645809][ T5394] el0_svc_common+0x138/0x258 [ 59.646614][ T5394] do_el0_svc+0x58/0x13c [ 59.647323][ T5394] el0_svc+0x78/0x1d0 [ 59.647949][ T5394] el0t_64_sync_handler+0xcc/0xe4 [ 59.648817][ T5394] el0t_64_sync+0x1a0/0x1a4 [ 59.649750][ T5394] ------------[ cut here ]------------ [ 59.651284][ T5394] WARNING: CPU: 0 PID: 5394 at fs/btrfs/free-space-tree.c:1267 btrfs_clear_free_space_tree+0x6f4/0x9f0 [ 59.653052][ T5394] Modules linked in: [ 59.653693][ T5394] CPU: 0 PID: 5394 Comm: syz-executor.0 Tainted: G W syzkaller #0 [ 59.655230][ T5394] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/18/2026 [ 59.656969][ T5394] pstate: 62400005 (nZCv daif +PAN -UAO +TCO -DIT -SSBS BTYPE=--) [ 59.658245][ T5394] pc : btrfs_clear_free_space_tree+0x6f4/0x9f0 [ 59.659264][ T5394] lr : btrfs_clear_free_space_tree+0x6f4/0x9f0 [ 59.660253][ T5394] sp : ffff800021ca77a0 [ 59.660951][ T5394] x29: ffff800021ca7850 x28: 1fffe0001b5170d3 x27: ffff700004394ef8 [ 59.662300][ T5394] x26: dfff800000000000 x25: 0000000000000000 x24: 0000000000000006 [ 59.663659][ T5394] x23: 1fffe0001bda9d13 x22: ffff0000da8b99d0 x21: ffff0000ded4e898 [ 59.664957][ T5394] x20: 00000000fffffff4 x19: ffff0000ded4e840 x18: 0000000000000001 [ 59.666358][ T5394] x17: 0000000000000000 x16: ffff80001125f22c x15: 00000000ffffffff [ 59.667749][ T5394] x14: 0000000000000001 x13: 1fffe000341f05ab x12: 0000000000ff0100 [ 59.669065][ T5394] x11: 0000000000000000 x10: 0000000000000000 x9 : 7b88fd2f0b1d4a00 [ 59.670385][ T5394] x8 : 7b88fd2f0b1d4a00 x7 : 0000000000000001 x6 : 0000000000000001 [ 59.671748][ T5394] x5 : ffff800021ca70b8 x4 : ffff80001437f3e0 x3 : ffff80000850932c [ 59.673095][ T5394] x2 : 0000000000000001 x1 : 0000000100000000 x0 : 0000000000000026 [ 59.674391][ T5394] Call trace: [ 59.674915][ T5394] btrfs_clear_free_space_tree+0x6f4/0x9f0 [ 59.675898][ T5394] btrfs_start_pre_rw_mount+0x240/0x568 [ 59.676843][ T5394] btrfs_remount+0xab0/0x12b0 [ 59.677676][ T5394] legacy_reconfigure+0xf8/0x110 [ 59.678481][ T5394] reconfigure_super+0x1d4/0x6f4 [ 59.679304][ T5394] path_mount+0xc88/0x1008 [ 59.680070][ T5394] __arm64_sys_mount+0x514/0x5f0 [ 59.680900][ T5394] invoke_syscall+0x98/0x2b0 [ 59.681682][ T5394] el0_svc_common+0x138/0x258 [ 59.682462][ T5394] do_el0_svc+0x58/0x13c [ 59.683139][ T5394] el0_svc+0x78/0x1d0 [ 59.683777][ T5394] el0t_64_sync_handler+0xcc/0xe4 [ 59.684619][ T5394] el0t_64_sync+0x1a0/0x1a4 [ 59.685382][ T5394] irq event stamp: 78942 [ 59.686101][ T5394] hardirqs last enabled at (78941): [] __up_console_sem+0xb4/0xfc [ 59.687744][ T5394] hardirqs last disabled at (78942): [] el1_dbg+0x24/0x80 [ 59.689086][ T5394] softirqs last enabled at (78918): [] handle_softirqs+0xa40/0xbe4 [ 59.690727][ T5394] softirqs last disabled at (78905): [] __irq_exit_rcu+0x240/0x43c [ 59.692329][ T5394] ---[ end trace a09f62afa63081ba ]--- [ 59.694150][ T5394] BTRFS: error (device loop0) in btrfs_clear_free_space_tree:1267: errno=-12 Out of memory [ 59.695969][ T5394] BTRFS warning (device loop0): failed to clear free space tree: -12 [ 59.723246][ T4357] BTRFS warning (device loop0): page private not zero on page 5341184 [ 59.925376][ T5416] BTRFS: device fsid ed167579-eb65-4e76-9a50-61ac97e9b59d devid 1 transid 8 /dev/loop0 scanned by syz-executor.0 (5416) [ 59.938482][ T5416] FAULT_INJECTION: forcing a failure. [ 59.938482][ T5416] name failslab, interval 1, probability 0, space 0, times 0 [ 59.941392][ T5416] CPU: 0 PID: 5416 Comm: syz-executor.0 Tainted: G W syzkaller #0 [ 59.942949][ T5416] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/18/2026 [ 59.944528][ T5416] Call trace: [ 59.945035][ T5416] dump_backtrace+0x0/0x458 [ 59.945787][ T5416] show_stack+0x2c/0x3c [ 59.946507][ T5416] __dump_stack+0x30/0x40 [ 59.947202][ T5416] dump_stack_lvl+0xf4/0x15c [ 59.947971][ T5416] dump_stack+0x1c/0x5c [ 59.948652][ T5416] should_fail+0x3bc/0x514 [ 59.949421][ T5416] __should_failslab+0xbc/0x10c [ 59.950313][ T5416] should_failslab+0x10/0x28 [ 59.951094][ T5416] slab_pre_alloc_hook+0x64/0xe8 [ 59.951880][ T5416] kmem_cache_alloc+0x94/0x3d4 [ 59.952654][ T5416] start_transaction+0x4d0/0x13ec [ 59.953483][ T5416] btrfs_start_transaction+0x34/0x44 [ 59.954401][ T5416] btrfs_clear_free_space_tree+0xc4/0x9f0 [ 59.955369][ T5416] btrfs_start_pre_rw_mount+0x240/0x568 [ 59.956313][ T5416] btrfs_remount+0xab0/0x12b0 [ 59.957105][ T5416] legacy_reconfigure+0xf8/0x110 [ 59.957940][ T5416] reconfigure_super+0x1d4/0x6f4 [ 59.958764][ T5416] path_mount+0xc88/0x1008 [ 59.959508][ T5416] __arm64_sys_mount+0x514/0x5f0 [ 59.960279][ T5416] invoke_syscall+0x98/0x2b0 [ 59.961014][ T5416] el0_svc_common+0x138/0x258 [ 59.961748][ T5416] do_el0_svc+0x58/0x13c [ 59.962411][ T5416] el0_svc+0x78/0x1d0 [ 59.963110][ T5416] el0t_64_sync_handler+0xcc/0xe4 [ 59.963917][ T5416] el0t_64_sync+0x1a0/0x1a4 [ 59.966257][ T5416] BTRFS warning (device loop0): failed to clear free space tree: -12 [ 60.001162][ T4361] BTRFS: device fsid ed167579-eb65-4e76-9a50-61ac97e9b59d devid 1 transid 9 /dev/loop0 scanned by udevd (4361) [ 60.273141][ T5438] FAULT_INJECTION: forcing a failure. [ 60.273141][ T5438] name failslab, interval 1, probability 0, space 0, times 0 [ 60.275366][ T5438] CPU: 1 PID: 5438 Comm: syz-executor.0 Tainted: G W syzkaller #0 [ 60.276898][ T5438] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/18/2026 [ 60.278625][ T5438] Call trace: [ 60.279150][ T5438] dump_backtrace+0x0/0x458 [ 60.279908][ T5438] show_stack+0x2c/0x3c [ 60.280620][ T5438] __dump_stack+0x30/0x40 [ 60.281325][ T5438] dump_stack_lvl+0xf4/0x15c [ 60.282120][ T5438] dump_stack+0x1c/0x5c [ 60.282880][ T5438] should_fail+0x3bc/0x514 [ 60.283656][ T5438] __should_failslab+0xbc/0x10c [ 60.284455][ T5438] should_failslab+0x10/0x28 [ 60.285217][ T5438] slab_pre_alloc_hook+0x64/0xe8 [ 60.286062][ T5438] kmem_cache_alloc+0x94/0x3d4 [ 60.286923][ T5438] btrfs_alloc_path+0x5c/0x68 [ 60.287755][ T5438] btrfs_clear_free_space_tree+0x24c/0x9f0 [ 60.288751][ T5438] btrfs_start_pre_rw_mount+0x240/0x568 [ 60.289642][ T5438] btrfs_remount+0xab0/0x12b0 [ 60.290420][ T5438] legacy_reconfigure+0xf8/0x110 [ 60.291243][ T5438] reconfigure_super+0x1d4/0x6f4 [ 60.292093][ T5438] path_mount+0xc88/0x1008 [ 60.292841][ T5438] __arm64_sys_mount+0x514/0x5f0 [ 60.293655][ T5438] invoke_syscall+0x98/0x2b0 [ 60.294397][ T5438] el0_svc_common+0x138/0x258 [ 60.295162][ T5438] do_el0_svc+0x58/0x13c [ 60.295896][ T5438] el0_svc+0x78/0x1d0 [ 60.296597][ T5438] el0t_64_sync_handler+0xcc/0xe4 [ 60.297521][ T5438] el0t_64_sync+0x1a0/0x1a4 [ 60.299843][ T5438] ------------[ cut here ]------------ [ 60.300901][ T5438] WARNING: CPU: 1 PID: 5438 at fs/btrfs/free-space-tree.c:1267 btrfs_clear_free_space_tree+0x6f4/0x9f0 [ 60.302691][ T5438] Modules linked in: [ 60.303369][ T5438] CPU: 1 PID: 5438 Comm: syz-executor.0 Tainted: G W syzkaller #0 [ 60.304893][ T5438] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/18/2026 [ 60.306501][ T5438] pstate: 62400005 (nZCv daif +PAN -UAO +TCO -DIT -SSBS BTYPE=--) [ 60.307815][ T5438] pc : btrfs_clear_free_space_tree+0x6f4/0x9f0 [ 60.308805][ T5438] lr : btrfs_clear_free_space_tree+0x6f4/0x9f0 [ 60.309843][ T5438] sp : ffff8000221377a0 [ 60.310539][ T5438] x29: ffff800022137850 x28: 1fffe0001b5d08d3 x27: ffff700004426ef8 [ 60.311952][ T5438] x26: dfff800000000000 x25: 0000000000000000 x24: 0000000000000006 [ 60.313277][ T5438] x23: 1fffe0001bdc193f x22: ffff0000dae859d0 x21: ffff0000dee0c9f8 [ 60.314694][ T5438] x20: 00000000fffffff4 x19: ffff0000dee0c9a0 x18: 0000000000000001 [ 60.316039][ T5438] x17: 0000000000000000 x16: ffff80001125f22c x15: 00000000ffffffff [ 60.317401][ T5438] x14: 0000000000000001 x13: 1fffe000341f47ab x12: 0000000000ff0100 [ 60.318796][ T5438] x11: 0000000000000000 x10: 0000000000000000 x9 : da5fc7fe018b6800 [ 60.320191][ T5438] x8 : da5fc7fe018b6800 x7 : 0000000000000001 x6 : 0000000000000001 [ 60.321572][ T5438] x5 : ffff8000221370b8 x4 : ffff80001437f3e0 x3 : ffff80000850932c [ 60.322979][ T5438] x2 : 0000000000000001 x1 : 0000000100000000 x0 : 0000000000000026 [ 60.324417][ T5438] Call trace: [ 60.325001][ T5438] btrfs_clear_free_space_tree+0x6f4/0x9f0 [ 60.325956][ T5438] btrfs_start_pre_rw_mount+0x240/0x568 [ 60.326942][ T5438] btrfs_remount+0xab0/0x12b0 [ 60.327685][ T5438] legacy_reconfigure+0xf8/0x110 [ 60.328480][ T5438] reconfigure_super+0x1d4/0x6f4 [ 60.329312][ T5438] path_mount+0xc88/0x1008 [ 60.330057][ T5438] __arm64_sys_mount+0x514/0x5f0 [ 60.330840][ T5438] invoke_syscall+0x98/0x2b0 [ 60.331598][ T5438] el0_svc_common+0x138/0x258 [ 60.332437][ T5438] do_el0_svc+0x58/0x13c [ 60.333151][ T5438] el0_svc+0x78/0x1d0 [ 60.333773][ T5438] el0t_64_sync_handler+0xcc/0xe4 [ 60.334635][ T5438] el0t_64_sync+0x1a0/0x1a4 [ 60.335453][ T5438] irq event stamp: 78860 [ 60.336168][ T5438] hardirqs last enabled at (78859): [] __up_console_sem+0xb4/0xfc [ 60.337758][ T5438] hardirqs last disabled at (78860): [] el1_dbg+0x24/0x80 [ 60.339311][ T5438] softirqs last enabled at (78840): [] handle_softirqs+0xa40/0xbe4 [ 60.340968][ T5438] softirqs last disabled at (78827): [] __irq_exit_rcu+0x240/0x43c [ 60.342560][ T5438] ---[ end trace a09f62afa63081bb ]--- [ 60.346365][ T5438] BTRFS: error (device loop0) in btrfs_clear_free_space_tree:1267: errno=-12 Out of memory [ 60.347976][ T5438] BTRFS warning (device loop0): failed to clear free space tree: -12 1970/01/01 00:01:00 executed programs: 34 [ 60.377175][ T4357] BTRFS warning (device loop0): page private not zero on page 5341184 [ 60.489734][ T5460] BTRFS: device fsid ed167579-eb65-4e76-9a50-61ac97e9b59d devid 1 transid 8 /dev/loop0 scanned by syz-executor.0 (5460) [ 60.508071][ T5460] FAULT_INJECTION: forcing a failure. [ 60.508071][ T5460] name failslab, interval 1, probability 0, space 0, times 0 [ 60.510614][ T5460] CPU: 0 PID: 5460 Comm: syz-executor.0 Tainted: G W syzkaller #0 [ 60.512089][ T5460] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/18/2026 [ 60.513796][ T5460] Call trace: [ 60.514364][ T5460] dump_backtrace+0x0/0x458 [ 60.515074][ T5460] show_stack+0x2c/0x3c [ 60.515768][ T5460] __dump_stack+0x30/0x40 [ 60.516490][ T5460] dump_stack_lvl+0xf4/0x15c [ 60.517291][ T5460] dump_stack+0x1c/0x5c [ 60.517976][ T5460] should_fail+0x3bc/0x514 [ 60.518709][ T5460] __should_failslab+0xbc/0x10c [ 60.519535][ T5460] should_failslab+0x10/0x28 [ 60.520330][ T5460] slab_pre_alloc_hook+0x64/0xe8 [ 60.521130][ T5460] kmem_cache_alloc_trace+0x98/0x3ec [ 60.522085][ T5460] join_transaction+0x10c/0xa5c [ 60.522891][ T5460] start_transaction+0x914/0x13ec [ 60.523711][ T5460] btrfs_start_transaction+0x34/0x44 [ 60.524575][ T5460] btrfs_clear_free_space_tree+0xc4/0x9f0 [ 60.525448][ T5460] btrfs_start_pre_rw_mount+0x240/0x568 [ 60.526334][ T5460] btrfs_remount+0xab0/0x12b0 [ 60.527155][ T5460] legacy_reconfigure+0xf8/0x110 [ 60.527933][ T5460] reconfigure_super+0x1d4/0x6f4 [ 60.528754][ T5460] path_mount+0xc88/0x1008 [ 60.529447][ T5460] __arm64_sys_mount+0x514/0x5f0 [ 60.530290][ T5460] invoke_syscall+0x98/0x2b0 [ 60.531093][ T5460] el0_svc_common+0x138/0x258 [ 60.531891][ T5460] do_el0_svc+0x58/0x13c [ 60.532568][ T5460] el0_svc+0x78/0x1d0 [ 60.533236][ T5460] el0t_64_sync_handler+0xcc/0xe4 [ 60.534097][ T5460] el0t_64_sync+0x1a0/0x1a4 [ 60.536631][ T5460] BTRFS warning (device loop0): failed to clear free space tree: -12 [ 60.685054][ T5481] BTRFS: device fsid ed167579-eb65-4e76-9a50-61ac97e9b59d devid 1 transid 8 /dev/loop0 scanned by syz-executor.0 (5481) [ 60.699931][ T5481] FAULT_INJECTION: forcing a failure. [ 60.699931][ T5481] name failslab, interval 1, probability 0, space 0, times 0 [ 60.702266][ T5481] CPU: 1 PID: 5481 Comm: syz-executor.0 Tainted: G W syzkaller #0 [ 60.703688][ T5481] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/18/2026 [ 60.705431][ T5481] Call trace: [ 60.705999][ T5481] dump_backtrace+0x0/0x458 [ 60.706806][ T5481] show_stack+0x2c/0x3c [ 60.707533][ T5481] __dump_stack+0x30/0x40 [ 60.708278][ T5481] dump_stack_lvl+0xf4/0x15c [ 60.709036][ T5481] dump_stack+0x1c/0x5c [ 60.709803][ T5481] should_fail+0x3bc/0x514 [ 60.710560][ T5481] __should_failslab+0xbc/0x10c [ 60.711282][ T5481] should_failslab+0x10/0x28 [ 60.712054][ T5481] slab_pre_alloc_hook+0x64/0xe8 [ 60.712919][ T5481] kmem_cache_alloc+0x94/0x3d4 [ 60.713718][ T5481] btrfs_alloc_path+0x5c/0x68 [ 60.714500][ T5481] btrfs_clear_free_space_tree+0x24c/0x9f0 [ 60.715518][ T5481] btrfs_start_pre_rw_mount+0x240/0x568 [ 60.716475][ T5481] btrfs_remount+0xab0/0x12b0 [ 60.717304][ T5481] legacy_reconfigure+0xf8/0x110 [ 60.718150][ T5481] reconfigure_super+0x1d4/0x6f4 [ 60.718990][ T5481] path_mount+0xc88/0x1008 [ 60.719723][ T5481] __arm64_sys_mount+0x514/0x5f0 [ 60.720581][ T5481] invoke_syscall+0x98/0x2b0 [ 60.721326][ T5481] el0_svc_common+0x138/0x258 [ 60.722034][ T5481] do_el0_svc+0x58/0x13c [ 60.722770][ T5481] el0_svc+0x78/0x1d0 [ 60.723470][ T5481] el0t_64_sync_handler+0xcc/0xe4 [ 60.724270][ T5481] el0t_64_sync+0x1a0/0x1a4 [ 60.725888][ T5481] ------------[ cut here ]------------ [ 60.726938][ T5481] WARNING: CPU: 1 PID: 5481 at fs/btrfs/free-space-tree.c:1267 btrfs_clear_free_space_tree+0x6f4/0x9f0 [ 60.728789][ T5481] Modules linked in: [ 60.729446][ T5481] CPU: 1 PID: 5481 Comm: syz-executor.0 Tainted: G W syzkaller #0 [ 60.730892][ T5481] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/18/2026 [ 60.732544][ T5481] pstate: 62400005 (nZCv daif +PAN -UAO +TCO -DIT -SSBS BTYPE=--) [ 60.733903][ T5481] pc : btrfs_clear_free_space_tree+0x6f4/0x9f0 [ 60.734905][ T5481] lr : btrfs_clear_free_space_tree+0x6f4/0x9f0 [ 60.735930][ T5481] sp : ffff8000223577a0 [ 60.736614][ T5481] x29: ffff800022357850 x28: 1fffe0001b5d08d3 x27: ffff70000446aef8 [ 60.737998][ T5481] x26: dfff800000000000 x25: 0000000000000000 x24: 0000000000000006 [ 60.739388][ T5481] x23: 1fffe0001bdc1929 x22: ffff0000dae859d0 x21: ffff0000dee0c948 [ 60.740783][ T5481] x20: 00000000fffffff4 x19: ffff0000dee0c8f0 x18: 0000000000000001 [ 60.742175][ T5481] x17: 0000000000000000 x16: ffff80001125f22c x15: 00000000ffffffff [ 60.743527][ T5481] x14: 0000000000000001 x13: 1fffe000341f47ab x12: 0000000000ff0100 [ 60.744844][ T5481] x11: 0000000000000000 x10: 0000000000000000 x9 : a445230619086c00 [ 60.746177][ T5481] x8 : a445230619086c00 x7 : 0000000000000001 x6 : 0000000000000001 [ 60.747525][ T5481] x5 : ffff8000223570b8 x4 : ffff80001437f3e0 x3 : ffff80000850932c [ 60.748871][ T5481] x2 : 0000000000000001 x1 : 0000000100000000 x0 : 0000000000000026 [ 60.750163][ T5481] Call trace: [ 60.750738][ T5481] btrfs_clear_free_space_tree+0x6f4/0x9f0 [ 60.751739][ T5481] btrfs_start_pre_rw_mount+0x240/0x568 [ 60.752708][ T5481] btrfs_remount+0xab0/0x12b0 [ 60.753465][ T5481] legacy_reconfigure+0xf8/0x110 [ 60.754316][ T5481] reconfigure_super+0x1d4/0x6f4 [ 60.755103][ T5481] path_mount+0xc88/0x1008 [ 60.755841][ T5481] __arm64_sys_mount+0x514/0x5f0 [ 60.756662][ T5481] invoke_syscall+0x98/0x2b0 [ 60.757396][ T5481] el0_svc_common+0x138/0x258 [ 60.758189][ T5481] do_el0_svc+0x58/0x13c [ 60.758865][ T5481] el0_svc+0x78/0x1d0 [ 60.759553][ T5481] el0t_64_sync_handler+0xcc/0xe4 [ 60.760338][ T5481] el0t_64_sync+0x1a0/0x1a4 [ 60.761105][ T5481] irq event stamp: 79714 [ 60.761874][ T5481] hardirqs last enabled at (79713): [] __up_console_sem+0xb4/0xfc [ 60.763382][ T5481] hardirqs last disabled at (79714): [] el1_dbg+0x24/0x80 [ 60.764956][ T5481] softirqs last enabled at (79694): [] handle_softirqs+0xa40/0xbe4 [ 60.766617][ T5481] softirqs last disabled at (79651): [] __irq_exit_rcu+0x240/0x43c [ 60.768229][ T5481] ---[ end trace a09f62afa63081bc ]--- [ 60.769383][ T5481] BTRFS: error (device loop0) in btrfs_clear_free_space_tree:1267: errno=-12 Out of memory [ 60.771274][ T5481] BTRFS warning (device loop0): failed to clear free space tree: -12 [ 60.799169][ T4357] BTRFS warning (device loop0): page private not zero on page 5341184 [ 61.005142][ T5503] BTRFS: device fsid ed167579-eb65-4e76-9a50-61ac97e9b59d devid 1 transid 8 /dev/loop0 scanned by syz-executor.0 (5503) [ 61.017269][ T5503] FAULT_INJECTION: forcing a failure. [ 61.017269][ T5503] name failslab, interval 1, probability 0, space 0, times 0 [ 61.019524][ T5503] CPU: 1 PID: 5503 Comm: syz-executor.0 Tainted: G W syzkaller #0 [ 61.021093][ T5503] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/18/2026 [ 61.022738][ T5503] Call trace: [ 61.023297][ T5503] dump_backtrace+0x0/0x458 [ 61.024083][ T5503] show_stack+0x2c/0x3c [ 61.024804][ T5503] __dump_stack+0x30/0x40 [ 61.025513][ T5503] dump_stack_lvl+0xf4/0x15c [ 61.026348][ T5503] dump_stack+0x1c/0x5c [ 61.027080][ T5503] should_fail+0x3bc/0x514 [ 61.027825][ T5503] __should_failslab+0xbc/0x10c [ 61.028582][ T5503] should_failslab+0x10/0x28 [ 61.029337][ T5503] slab_pre_alloc_hook+0x64/0xe8 [ 61.030184][ T5503] kmem_cache_alloc_trace+0x98/0x3ec [ 61.031037][ T5503] join_transaction+0x10c/0xa5c [ 61.031795][ T5503] start_transaction+0x914/0x13ec [ 61.032655][ T5503] btrfs_start_transaction+0x34/0x44 [ 61.033553][ T5503] btrfs_clear_free_space_tree+0xc4/0x9f0 [ 61.034530][ T5503] btrfs_start_pre_rw_mount+0x240/0x568 [ 61.035520][ T5503] btrfs_remount+0xab0/0x12b0 [ 61.036252][ T5503] legacy_reconfigure+0xf8/0x110 [ 61.037051][ T5503] reconfigure_super+0x1d4/0x6f4 [ 61.037833][ T5503] path_mount+0xc88/0x1008 [ 61.038616][ T5503] __arm64_sys_mount+0x514/0x5f0 [ 61.039464][ T5503] invoke_syscall+0x98/0x2b0 [ 61.040219][ T5503] el0_svc_common+0x138/0x258 [ 61.041024][ T5503] do_el0_svc+0x58/0x13c [ 61.041741][ T5503] el0_svc+0x78/0x1d0 [ 61.042414][ T5503] el0t_64_sync_handler+0xcc/0xe4 [ 61.043310][ T5503] el0t_64_sync+0x1a0/0x1a4 [ 61.045678][ T5503] BTRFS warning (device loop0): failed to clear free space tree: -12 [ 61.087391][ T4361] BTRFS: device fsid ed167579-eb65-4e76-9a50-61ac97e9b59d devid 1 transid 9 /dev/loop0 scanned by udevd (4361) [ 61.291049][ T5524] btrfs_printk: 136 callbacks suppressed [ 61.291061][ T5524] BTRFS info (device loop0): using sha256 (sha256-ce) checksum algorithm [ 61.293460][ T5524] BTRFS info (device loop0): turning on flush-on-commit [ 61.294585][ T5524] BTRFS info (device loop0): using default commit interval 30s [ 61.295810][ T5524] BTRFS info (device loop0): force clearing of disk cache [ 61.296949][ T5524] BTRFS info (device loop0): force zlib compression, level 3 [ 61.298206][ T5524] BTRFS info (device loop0): enabling disk space caching [ 61.300494][ T5524] BTRFS info (device loop0): disk space caching is enabled [ 61.301735][ T5524] BTRFS info (device loop0): has skinny extents [ 61.308703][ T5524] BTRFS info (device loop0): enabling ssd optimizations [ 61.312087][ T5524] FAULT_INJECTION: forcing a failure. [ 61.312087][ T5524] name failslab, interval 1, probability 0, space 0, times 0 [ 61.314115][ T5524] CPU: 1 PID: 5524 Comm: syz-executor.0 Tainted: G W syzkaller #0 [ 61.315569][ T5524] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/18/2026 [ 61.317319][ T5524] Call trace: [ 61.317836][ T5524] dump_backtrace+0x0/0x458 [ 61.318625][ T5524] show_stack+0x2c/0x3c [ 61.319310][ T5524] __dump_stack+0x30/0x40 [ 61.320026][ T5524] dump_stack_lvl+0xf4/0x15c [ 61.320799][ T5524] dump_stack+0x1c/0x5c [ 61.321461][ T5524] should_fail+0x3bc/0x514 [ 61.322152][ T5524] __should_failslab+0xbc/0x10c [ 61.322935][ T5524] should_failslab+0x10/0x28 [ 61.323731][ T5524] slab_pre_alloc_hook+0x64/0xe8 [ 61.324559][ T5524] __kmalloc_track_caller+0x70/0x358 [ 61.325443][ T5524] kmemdup_nul+0xdc/0x18c [ 61.326196][ T5524] match_int+0xc0/0x1ac [ 61.326875][ T5524] btrfs_parse_options+0x8fc/0x2a98 [ 61.327788][ T5524] btrfs_remount+0x300/0x12b0 [ 61.328544][ T5524] legacy_reconfigure+0xf8/0x110 [ 61.329435][ T5524] reconfigure_super+0x1d4/0x6f4 [ 61.330245][ T5524] path_mount+0xc88/0x1008 [ 61.331012][ T5524] __arm64_sys_mount+0x514/0x5f0 [ 61.331877][ T5524] invoke_syscall+0x98/0x2b0 [ 61.332691][ T5524] el0_svc_common+0x138/0x258 [ 61.333514][ T5524] do_el0_svc+0x58/0x13c [ 61.334206][ T5524] el0_svc+0x78/0x1d0 [ 61.334899][ T5524] el0t_64_sync_handler+0xcc/0xe4 [ 61.335774][ T5524] el0t_64_sync+0x1a0/0x1a4 [ 61.338542][ T5524] BTRFS error (device loop0): unrecognized commit_interval value 0x0000000000000000 [ 61.546358][ T5546] set_capacity_and_notify: 9 callbacks suppressed [ 61.546367][ T5546] loop0: detected capacity change from 0 to 32768 [ 61.582935][ T5546] BTRFS: device fsid ed167579-eb65-4e76-9a50-61ac97e9b59d devid 1 transid 8 /dev/loop0 scanned by syz-executor.0 (5546) [ 61.587935][ T5546] BTRFS info (device loop0): using sha256 (sha256-ce) checksum algorithm [ 61.589540][ T5546] BTRFS info (device loop0): turning on flush-on-commit [ 61.590778][ T5546] BTRFS info (device loop0): using default commit interval 30s [ 61.592191][ T5546] BTRFS info (device loop0): force clearing of disk cache [ 61.593213][ T5546] BTRFS info (device loop0): force zlib compression, level 3 [ 61.594607][ T5546] BTRFS info (device loop0): enabling disk space caching [ 61.595805][ T5546] BTRFS info (device loop0): disk space caching is enabled [ 61.597062][ T5546] BTRFS info (device loop0): has skinny extents [ 61.604775][ T5546] BTRFS info (device loop0): enabling ssd optimizations [ 61.607662][ T5546] BTRFS info (device loop0): using default commit interval 30s [ 61.609673][ T5546] BTRFS info (device loop0): force clearing of disk cache [ 61.610954][ T5546] BTRFS info (device loop0): clearing free space tree [ 61.612110][ T5546] FAULT_INJECTION: forcing a failure. [ 61.612110][ T5546] name failslab, interval 1, probability 0, space 0, times 0 [ 61.614405][ T5546] CPU: 1 PID: 5546 Comm: syz-executor.0 Tainted: G W syzkaller #0 [ 61.615976][ T5546] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/18/2026 [ 61.617741][ T5546] Call trace: [ 61.618255][ T5546] dump_backtrace+0x0/0x458 [ 61.618965][ T5546] show_stack+0x2c/0x3c [ 61.619643][ T5546] __dump_stack+0x30/0x40 [ 61.620425][ T5546] dump_stack_lvl+0xf4/0x15c [ 61.621221][ T5546] dump_stack+0x1c/0x5c [ 61.621966][ T5546] should_fail+0x3bc/0x514 [ 61.622747][ T5546] __should_failslab+0xbc/0x10c [ 61.623598][ T5546] should_failslab+0x10/0x28 [ 61.624354][ T5546] slab_pre_alloc_hook+0x64/0xe8 [ 61.625201][ T5546] kmem_cache_alloc_trace+0x98/0x3ec [ 61.626089][ T5546] join_transaction+0x10c/0xa5c [ 61.626931][ T5546] start_transaction+0x914/0x13ec [ 61.627783][ T5546] btrfs_start_transaction+0x34/0x44 [ 61.628679][ T5546] btrfs_clear_free_space_tree+0xc4/0x9f0 [ 61.629660][ T5546] btrfs_start_pre_rw_mount+0x240/0x568 [ 61.630627][ T5546] btrfs_remount+0xab0/0x12b0 [ 61.631430][ T5546] legacy_reconfigure+0xf8/0x110 [ 61.632244][ T5546] reconfigure_super+0x1d4/0x6f4 [ 61.633126][ T5546] path_mount+0xc88/0x1008 [ 61.633853][ T5546] __arm64_sys_mount+0x514/0x5f0 [ 61.634680][ T5546] invoke_syscall+0x98/0x2b0 [ 61.635459][ T5546] el0_svc_common+0x138/0x258 [ 61.636236][ T5546] do_el0_svc+0x58/0x13c [ 61.636950][ T5546] el0_svc+0x78/0x1d0 [ 61.637660][ T5546] el0t_64_sync_handler+0xcc/0xe4 [ 61.638596][ T5546] el0t_64_sync+0x1a0/0x1a4 [ 61.640772][ T5546] BTRFS warning (device loop0): failed to clear free space tree: -12 [ 61.784930][ T5568] loop0: detected capacity change from 0 to 32768 [ 61.832169][ T5568] BTRFS: device fsid ed167579-eb65-4e76-9a50-61ac97e9b59d devid 1 transid 8 /dev/loop0 scanned by syz-executor.0 (5568) [ 61.835456][ T5568] BTRFS info (device loop0): using sha256 (sha256-ce) checksum algorithm [ 61.836950][ T5568] BTRFS info (device loop0): turning on flush-on-commit [ 61.838301][ T5568] BTRFS info (device loop0): using default commit interval 30s [ 61.839954][ T5568] BTRFS info (device loop0): force clearing of disk cache [ 61.841142][ T5568] BTRFS info (device loop0): force zlib compression, level 3 [ 61.842491][ T5568] BTRFS info (device loop0): enabling disk space caching [ 61.843724][ T5568] BTRFS info (device loop0): disk space caching is enabled [ 61.844979][ T5568] BTRFS info (device loop0): has skinny extents [ 61.861021][ T5568] BTRFS info (device loop0): enabling ssd optimizations [ 61.863871][ T5568] BTRFS info (device loop0): using default commit interval 30s [ 61.865238][ T5568] BTRFS info (device loop0): force clearing of disk cache [ 61.866440][ T5568] BTRFS info (device loop0): clearing free space tree [ 61.867590][ T5568] BTRFS info (device loop0): clearing compat-ro feature flag for FREE_SPACE_TREE (0x1) [ 61.870258][ T5568] BTRFS info (device loop0): clearing compat-ro feature flag for FREE_SPACE_TREE_VALID (0x2) [ 61.872017][ T5568] FAULT_INJECTION: forcing a failure. [ 61.872017][ T5568] name failslab, interval 1, probability 0, space 0, times 0 [ 61.874208][ T5568] CPU: 0 PID: 5568 Comm: syz-executor.0 Tainted: G W syzkaller #0 [ 61.875651][ T5568] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/18/2026 [ 61.877361][ T5568] Call trace: [ 61.877901][ T5568] dump_backtrace+0x0/0x458 [ 61.878565][ T5568] show_stack+0x2c/0x3c [ 61.879193][ T5568] __dump_stack+0x30/0x40 [ 61.879876][ T5568] dump_stack_lvl+0xf4/0x15c [ 61.880567][ T5568] dump_stack+0x1c/0x5c [ 61.881215][ T5568] should_fail+0x3bc/0x514 [ 61.881882][ T5568] __should_failslab+0xbc/0x10c [ 61.882615][ T5568] should_failslab+0x10/0x28 [ 61.883302][ T5568] slab_pre_alloc_hook+0x64/0xe8 [ 61.884020][ T5568] kmem_cache_alloc+0x94/0x3d4 [ 61.884858][ T5568] btrfs_alloc_path+0x5c/0x68 [ 61.885595][ T5568] btrfs_clear_free_space_tree+0x24c/0x9f0 [ 61.886544][ T5568] btrfs_start_pre_rw_mount+0x240/0x568 [ 61.887447][ T5568] btrfs_remount+0xab0/0x12b0 [ 61.888212][ T5568] legacy_reconfigure+0xf8/0x110 [ 61.889058][ T5568] reconfigure_super+0x1d4/0x6f4 [ 61.889893][ T5568] path_mount+0xc88/0x1008 [ 61.890647][ T5568] __arm64_sys_mount+0x514/0x5f0 [ 61.891502][ T5568] invoke_syscall+0x98/0x2b0 [ 61.892311][ T5568] el0_svc_common+0x138/0x258 [ 61.893127][ T5568] do_el0_svc+0x58/0x13c [ 61.893870][ T5568] el0_svc+0x78/0x1d0 [ 61.894527][ T5568] el0t_64_sync_handler+0xcc/0xe4 [ 61.895316][ T5568] el0t_64_sync+0x1a0/0x1a4 [ 61.897564][ T5568] ------------[ cut here ]------------ [ 61.898502][ T5568] WARNING: CPU: 0 PID: 5568 at fs/btrfs/free-space-tree.c:1267 btrfs_clear_free_space_tree+0x6f4/0x9f0 [ 61.900290][ T5568] Modules linked in: [ 61.900863][ T5568] CPU: 0 PID: 5568 Comm: syz-executor.0 Tainted: G W syzkaller #0 [ 61.902259][ T5568] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/18/2026 [ 61.903863][ T5568] pstate: 62400005 (nZCv daif +PAN -UAO +TCO -DIT -SSBS BTYPE=--) [ 61.905105][ T5568] pc : btrfs_clear_free_space_tree+0x6f4/0x9f0 [ 61.906065][ T5568] lr : btrfs_clear_free_space_tree+0x6f4/0x9f0 [ 61.907006][ T5568] sp : ffff8000227777a0 [ 61.907612][ T5568] x29: ffff800022777850 x28: 1fffe0001a5bc8d3 x27: ffff7000044eeef8 [ 61.908913][ T5568] x26: dfff800000000000 x25: 0000000000000000 x24: 0000000000000006 [ 61.910291][ T5568] x23: 1fffe0001bda9c8f x22: ffff0000d2de59d0 x21: ffff0000ded4e478 [ 61.911606][ T5568] x20: 00000000fffffff4 x19: ffff0000ded4e420 x18: 0000000000000001 [ 61.912966][ T5568] x17: 0000000000000000 x16: ffff80001125f22c x15: 00000000ffffffff [ 61.914291][ T5568] x14: 0000000000000001 x13: 1fffe000341f05ab x12: 0000000000ff0100 [ 61.915571][ T5568] x11: 0000000000000000 x10: 0000000000000000 x9 : f2af64a8b7318600 [ 61.916915][ T5568] x8 : f2af64a8b7318600 x7 : 0000000000000001 x6 : 0000000000000001 [ 61.918312][ T5568] x5 : ffff8000227770b8 x4 : ffff80001437f3e0 x3 : ffff80000850932c [ 61.919661][ T5568] x2 : 0000000000000001 x1 : 0000000100000000 x0 : 0000000000000026 [ 61.921040][ T5568] Call trace: [ 61.921586][ T5568] btrfs_clear_free_space_tree+0x6f4/0x9f0 [ 61.922514][ T5568] btrfs_start_pre_rw_mount+0x240/0x568 [ 61.923404][ T5568] btrfs_remount+0xab0/0x12b0 [ 61.924250][ T5568] legacy_reconfigure+0xf8/0x110 [ 61.925111][ T5568] reconfigure_super+0x1d4/0x6f4 [ 61.925929][ T5568] path_mount+0xc88/0x1008 [ 61.926631][ T5568] __arm64_sys_mount+0x514/0x5f0 [ 61.927405][ T5568] invoke_syscall+0x98/0x2b0 [ 61.928170][ T5568] el0_svc_common+0x138/0x258 [ 61.928943][ T5568] do_el0_svc+0x58/0x13c [ 61.929671][ T5568] el0_svc+0x78/0x1d0 [ 61.930353][ T5568] el0t_64_sync_handler+0xcc/0xe4 [ 61.931262][ T5568] el0t_64_sync+0x1a0/0x1a4 [ 61.932063][ T5568] irq event stamp: 79658 [ 61.932743][ T5568] hardirqs last enabled at (79657): [] __up_console_sem+0xb4/0xfc [ 61.934343][ T5568] hardirqs last disabled at (79658): [] el1_dbg+0x24/0x80 [ 61.935897][ T5568] softirqs last enabled at (79638): [] handle_softirqs+0xa40/0xbe4 [ 61.937562][ T5568] softirqs last disabled at (79623): [] __irq_exit_rcu+0x240/0x43c [ 61.939140][ T5568] ---[ end trace a09f62afa63081bd ]--- [ 61.942579][ T5568] BTRFS: error (device loop0) in btrfs_clear_free_space_tree:1267: errno=-12 Out of memory [ 61.944347][ T5568] BTRFS warning (device loop0): failed to clear free space tree: -12 [ 61.969922][ T4357] BTRFS warning (device loop0): page private not zero on page 5341184