[ 36.395084][ T136] netdevsim netdevsim0 netdevsim3 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 38.453749][ T136] netdevsim netdevsim0 netdevsim2 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 38.503633][ T136] netdevsim netdevsim0 netdevsim1 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 38.544309][ T136] netdevsim netdevsim0 netdevsim0 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 39.733579][ T136] device hsr_slave_0 left promiscuous mode [ 39.779988][ T136] device hsr_slave_1 left promiscuous mode [ 39.880364][ T136] batman_adv: batadv0: Interface deactivated: batadv_slave_0 [ 39.881459][ T136] batman_adv: batadv0: Removing interface: batadv_slave_0 [ 39.883118][ T136] batman_adv: batadv0: Interface deactivated: batadv_slave_1 [ 39.884225][ T136] batman_adv: batadv0: Removing interface: batadv_slave_1 [ 39.885435][ T136] device bridge_slave_1 left promiscuous mode [ 39.886680][ T136] bridge0: port 2(bridge_slave_1) entered disabled state [ 39.931227][ T136] device bridge_slave_0 left promiscuous mode [ 39.932316][ T136] bridge0: port 1(bridge_slave_0) entered disabled state [ 40.089905][ T136] device veth1_macvtap left promiscuous mode [ 40.090880][ T136] device veth0_macvtap left promiscuous mode [ 40.091803][ T136] device veth1_vlan left promiscuous mode [ 40.092712][ T136] device veth0_vlan left promiscuous mode [ 40.194233][ T136] team0 (unregistering): Port device team_slave_1 removed [ 40.198375][ T136] team0 (unregistering): Port device team_slave_0 removed [ 40.207038][ T136] bond0 (unregistering): (slave bond_slave_1): Releasing backup interface [ 40.234044][ T136] bond0 (unregistering): (slave bond_slave_0): Releasing backup interface [ 40.364184][ T136] bond0 (unregistering): Released all slaves Warning: Permanently added '10.128.0.132' (ED25519) to the list of known hosts. 1970/01/01 00:00:40 ignoring optional flag "type"="gce" 1970/01/01 00:00:40 parsed 1 programs [ 40.941053][ T4249] Adding 124996k swap on ./swap-file. Priority:0 extents:1 across:124996k SSFS 1970/01/01 00:00:40 executed programs: 0 [ 41.007096][ T4255] chnl_net:caif_netlink_parms(): no params data found [ 41.026281][ T4255] bridge0: port 1(bridge_slave_0) entered blocking state [ 41.027402][ T4255] bridge0: port 1(bridge_slave_0) entered disabled state [ 41.028686][ T4255] device bridge_slave_0 entered promiscuous mode [ 41.030813][ T4255] bridge0: port 2(bridge_slave_1) entered blocking state [ 41.031898][ T4255] bridge0: port 2(bridge_slave_1) entered disabled state [ 41.033216][ T4255] device bridge_slave_1 entered promiscuous mode [ 41.041716][ T4255] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 41.043942][ T4255] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 41.051961][ T4255] team0: Port device team_slave_0 added [ 41.053768][ T4255] team0: Port device team_slave_1 added [ 41.060705][ T4255] batman_adv: batadv0: Adding interface: batadv_slave_0 [ 41.061739][ T4255] 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. [ 41.065129][ T4255] batman_adv: batadv0: Not using interface batadv_slave_0 (retrying later): interface not active [ 41.067271][ T4255] batman_adv: batadv0: Adding interface: batadv_slave_1 [ 41.068223][ T4255] 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. [ 41.072012][ T4255] batman_adv: batadv0: Not using interface batadv_slave_1 (retrying later): interface not active [ 41.131005][ T4255] device hsr_slave_0 entered promiscuous mode [ 41.169867][ T4255] device hsr_slave_1 entered promiscuous mode [ 41.780930][ T4255] netdevsim netdevsim0 netdevsim0: renamed from eth0 [ 41.821067][ T4255] netdevsim netdevsim0 netdevsim1: renamed from eth1 [ 41.870914][ T4255] netdevsim netdevsim0 netdevsim2: renamed from eth2 [ 41.891407][ T4255] netdevsim netdevsim0 netdevsim3: renamed from eth3 [ 41.963560][ T4255] 8021q: adding VLAN 0 to HW filter on device bond0 [ 41.967797][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): veth1: link becomes ready [ 41.969282][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 41.976259][ T4255] 8021q: adding VLAN 0 to HW filter on device team0 [ 41.978842][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bridge: link becomes ready [ 41.980241][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 41.981526][ T9] bridge0: port 1(bridge_slave_0) entered blocking state [ 41.982596][ T9] bridge0: port 1(bridge_slave_0) entered forwarding state [ 41.984445][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): bridge0: link becomes ready [ 41.986926][ T148] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bridge: link becomes ready [ 41.988258][ T148] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 41.990357][ T148] bridge0: port 2(bridge_slave_1) entered blocking state [ 41.991302][ T148] bridge0: port 2(bridge_slave_1) entered forwarding state [ 42.001193][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bond: link becomes ready [ 42.002945][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bond: link becomes ready [ 42.004429][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_team: link becomes ready [ 42.006145][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 42.007577][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_team: link becomes ready [ 42.008924][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 42.012996][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_hsr: link becomes ready [ 42.014398][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 42.015787][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_hsr: link becomes ready [ 42.017365][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 42.019820][ T4255] IPv6: ADDRCONF(NETDEV_CHANGE): hsr0: link becomes ready [ 42.025615][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): team0: link becomes ready [ 42.096467][ T4255] 8021q: adding VLAN 0 to HW filter on device batadv0 [ 42.101146][ T379] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan1: link becomes ready [ 42.102266][ T379] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan0: link becomes ready [ 42.106504][ T379] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_virt_wifi: link becomes ready [ 42.108061][ T379] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_virt_wifi: link becomes ready [ 42.115849][ T136] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_vlan: link becomes ready [ 42.117327][ T136] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_vlan: link becomes ready [ 42.119142][ T136] IPv6: ADDRCONF(NETDEV_CHANGE): vlan0: link becomes ready [ 42.121819][ T136] IPv6: ADDRCONF(NETDEV_CHANGE): vlan1: link becomes ready [ 42.124663][ T4255] device veth0_vlan entered promiscuous mode [ 42.127942][ T4255] device veth1_vlan entered promiscuous mode [ 42.136803][ T148] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan0: link becomes ready [ 42.138362][ T148] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan1: link becomes ready [ 42.140891][ T148] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_macvtap: link becomes ready [ 42.142351][ T148] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_macvtap: link becomes ready [ 42.144780][ T4255] device veth0_macvtap entered promiscuous mode [ 42.147095][ T4255] device veth1_macvtap entered promiscuous mode [ 42.152910][ T4255] batman_adv: batadv0: Interface activated: batadv_slave_0 [ 42.154875][ T136] IPv6: ADDRCONF(NETDEV_CHANGE): macvtap0: link becomes ready [ 42.156449][ T136] IPv6: ADDRCONF(NETDEV_CHANGE): macsec0: link becomes ready [ 42.157777][ T136] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_0: link becomes ready [ 42.159271][ T136] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_batadv: link becomes ready [ 42.162181][ T4255] batman_adv: batadv0: Interface activated: batadv_slave_1 [ 42.164599][ T4255] netdevsim netdevsim0 netdevsim0: set [1, 0] type 2 family 0 port 6081 - 0 [ 42.165968][ T4255] netdevsim netdevsim0 netdevsim1: set [1, 0] type 2 family 0 port 6081 - 0 [ 42.167262][ T4255] netdevsim netdevsim0 netdevsim2: set [1, 0] type 2 family 0 port 6081 - 0 [ 42.168661][ T4255] netdevsim netdevsim0 netdevsim3: set [1, 0] type 2 family 0 port 6081 - 0 [ 42.172235][ T136] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_1: link becomes ready [ 42.173690][ T136] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_batadv: link becomes ready [ 42.320242][ T4358] loop0: detected capacity change from 0 to 32768 [ 42.329485][ T4358] BTRFS: device fsid 24c7a497-3402-47dd-bef8-82358f5f30e0 devid 1 transid 8 /dev/loop0 scanned by syz-executor.0 (4358) [ 42.346769][ T4358] BTRFS info (device loop0): using crc32c (crc32c-generic) checksum algorithm [ 42.348130][ T4358] BTRFS info (device loop0): setting nodatasum [ 42.349154][ T4358] BTRFS info (device loop0): enabling ssd optimizations [ 42.351000][ T4358] BTRFS info (device loop0): max_inline at 0 [ 42.358850][ T4358] BTRFS info (device loop0): using free space tree [ 42.360478][ T4358] BTRFS info (device loop0): has skinny extents [ 42.441770][ T4358] FAULT_INJECTION: forcing a failure. [ 42.441770][ T4358] name fail_page_alloc, interval 1, probability 0, space 0, times 1 [ 42.444003][ T4358] CPU: 1 PID: 4358 Comm: syz-executor.0 Not tainted syzkaller #0 [ 42.445135][ T4358] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/02/2026 [ 42.446481][ T4358] Call trace: [ 42.446935][ T4358] dump_backtrace+0x0/0x458 [ 42.447536][ T4358] show_stack+0x2c/0x3c [ 42.448108][ T4358] __dump_stack+0x30/0x40 [ 42.448684][ T4358] dump_stack_lvl+0xf4/0x15c [ 42.449372][ T4358] dump_stack+0x1c/0x5c [ 42.450007][ T4358] should_fail+0x3c8/0x520 [ 42.450628][ T4358] should_fail_alloc_page+0x74/0xa8 [ 42.451360][ T4358] prepare_alloc_pages+0x160/0x460 [ 42.452055][ T4358] __alloc_pages+0x108/0x474 [ 42.452701][ T4358] alloc_pages+0x34c/0x5c0 [ 42.453301][ T4358] new_slab+0xdc/0x53c [ 42.453864][ T4358] ___slab_alloc+0x6ac/0xd84 [ 42.454530][ T4358] __slab_alloc+0x68/0xc0 [ 42.455094][ T4358] kmem_cache_alloc+0x2a8/0x3d8 [ 42.455816][ T4358] __alloc_extent_buffer+0x40/0x1e0 [ 42.456535][ T4358] alloc_extent_buffer+0x188/0xedc [ 42.457255][ T4358] btrfs_find_create_tree_block+0x3c/0x50 [ 42.458066][ T4358] btrfs_alloc_tree_block+0x1dc/0x10f0 [ 42.458853][ T4358] btrfs_force_cow_block+0x3ac/0x172c [ 42.459565][ T4358] btrfs_cow_block+0x2d4/0x674 [ 42.460297][ T4358] btrfs_search_slot+0xa10/0x1ec8 [ 42.460969][ T4358] btrfs_insert_empty_items+0x1e8/0x2b0 [ 42.461736][ T4358] btrfs_insert_inode_ref+0x150/0xa24 [ 42.462460][ T4358] btrfs_add_link+0x244/0xac8 [ 42.463131][ T4358] btrfs_link+0x3a4/0x67c [ 42.463726][ T4358] vfs_link+0x5b4/0x748 [ 42.464251][ T4358] do_linkat+0x248/0x754 [ 42.464871][ T4358] __arm64_sys_linkat+0xec/0x108 [ 42.465611][ T4358] invoke_syscall+0x98/0x28c [ 42.466252][ T4358] el0_svc_common+0x13c/0x258 [ 42.466986][ T4358] do_el0_svc+0x5c/0x140 [ 42.467609][ T4358] el0_svc+0x78/0x1d0 [ 42.468113][ T4358] el0t_64_sync_handler+0xcc/0xe4 [ 42.468801][ T4358] el0t_64_sync+0x1a0/0x1a4 [ 42.700036][ T4433] loop0: detected capacity change from 0 to 32768 [ 42.704443][ T4433] BTRFS: device fsid 24c7a497-3402-47dd-bef8-82358f5f30e0 devid 1 transid 8 /dev/loop0 scanned by syz-executor.0 (4433) [ 42.713113][ T4433] BTRFS info (device loop0): using crc32c (crc32c-generic) checksum algorithm [ 42.714384][ T4433] BTRFS info (device loop0): setting nodatasum [ 42.715282][ T4433] BTRFS info (device loop0): enabling ssd optimizations [ 42.716194][ T4433] BTRFS info (device loop0): max_inline at 0 [ 42.716981][ T4433] BTRFS info (device loop0): using free space tree [ 42.717823][ T4433] BTRFS info (device loop0): has skinny extents [ 42.783998][ T4433] FAULT_INJECTION: forcing a failure. [ 42.783998][ T4433] name failslab, interval 1, probability 0, space 0, times 1 [ 42.787121][ T4433] CPU: 0 PID: 4433 Comm: syz-executor.0 Not tainted syzkaller #0 [ 42.788183][ T4433] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/02/2026 [ 42.789593][ T4433] Call trace: [ 42.790066][ T4433] dump_backtrace+0x0/0x458 [ 42.790694][ T4433] show_stack+0x2c/0x3c [ 42.791215][ T4433] __dump_stack+0x30/0x40 [ 42.791794][ T4433] dump_stack_lvl+0xf4/0x15c [ 42.792446][ T4433] dump_stack+0x1c/0x5c [ 42.793034][ T4433] should_fail+0x3c8/0x520 [ 42.793613][ T4433] __should_failslab+0xbc/0x10c [ 42.794230][ T4433] should_failslab+0x10/0x28 [ 42.794888][ T4433] slab_pre_alloc_hook+0x64/0xe8 [ 42.795556][ T4433] kmem_cache_alloc+0x94/0x3d8 [ 42.796171][ T4433] btrfs_add_delayed_tree_ref+0x194/0xda4 [ 42.796930][ T4433] btrfs_alloc_tree_block+0xb2c/0x10f0 [ 42.797644][ T4433] btrfs_force_cow_block+0x3ac/0x172c [ 42.798378][ T4433] btrfs_cow_block+0x2d4/0x674 [ 42.799107][ T4433] btrfs_search_slot+0xa10/0x1ec8 [ 42.799937][ T4433] btrfs_insert_empty_items+0x1e8/0x2b0 [ 42.800676][ T4433] btrfs_insert_inode_ref+0x150/0xa24 [ 42.801395][ T4433] btrfs_add_link+0x244/0xac8 [ 42.802025][ T4433] btrfs_link+0x3a4/0x67c [ 42.802639][ T4433] vfs_link+0x5b4/0x748 [ 42.803211][ T4433] do_linkat+0x248/0x754 [ 42.803804][ T4433] __arm64_sys_linkat+0xec/0x108 [ 42.804470][ T4433] invoke_syscall+0x98/0x28c [ 42.805097][ T4433] el0_svc_common+0x13c/0x258 [ 42.805731][ T4433] do_el0_svc+0x5c/0x140 [ 42.806346][ T4433] el0_svc+0x78/0x1d0 [ 42.806930][ T4433] el0t_64_sync_handler+0xcc/0xe4 [ 42.807600][ T4433] el0t_64_sync+0x1a0/0x1a4 [ 42.872153][ T4255] ------------[ cut here ]------------ [ 42.873024][ T4255] WARNING: CPU: 0 PID: 4255 at fs/btrfs/space-info.h:110 btrfs_space_info_update_bytes_may_use+0x2b8/0x664 [ 42.874602][ T4255] Modules linked in: [ 42.875128][ T4255] CPU: 0 PID: 4255 Comm: syz-executor.0 Not tainted syzkaller #0 [ 42.876203][ T4255] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/02/2026 [ 42.877564][ T4255] pstate: 82400005 (Nzcv daif +PAN -UAO +TCO -DIT -SSBS BTYPE=--) [ 42.878843][ T4255] pc : btrfs_space_info_update_bytes_may_use+0x2b8/0x664 [ 42.879912][ T4255] lr : btrfs_space_info_update_bytes_may_use+0x2b4/0x664 [ 42.880924][ T4255] sp : ffff80001f2d7740 [ 42.881464][ T4255] x29: ffff80001f2d7750 x28: 0000000000000000 x27: 1fffe000192b850c [ 42.882548][ T4255] x26: dfff800000000000 x25: ffff80001438d110 x24: 0000000000000001 [ 42.883610][ T4255] x23: 0000000000000005 x22: 00000000000d0000 x21: 00000000000cf000 [ 42.884672][ T4255] x20: ffff0000c95c2860 x19: 0000000000000000 x18: 0000000000000000 [ 42.885820][ T4255] x17: 0000000000000000 x16: ffff80001134e478 x15: 0000000000000000 [ 42.887016][ T4255] x14: ffff700003e5aedc x13: 1ffff00003e5aedc x12: 0000000000000004 [ 42.888118][ T4255] x11: ff8080000a08c7a4 x10: 0000000000000000 x9 : ffff80000a08c7a4 [ 42.889206][ T4255] x8 : ffff0000ced51b40 x7 : ffff80000a08ba74 x6 : 0000000000000000 [ 42.890329][ T4255] x5 : 0000000000000000 x4 : 0000000000000001 x3 : ffff8000082db960 [ 42.891488][ T4255] x2 : fffffffffff30000 x1 : 00000000000d0000 x0 : 00000000000cf000 [ 42.892645][ T4255] Call trace: [ 42.893091][ T4255] btrfs_space_info_update_bytes_may_use+0x2b8/0x664 [ 42.894054][ T4255] btrfs_block_rsv_release+0x3bc/0x498 [ 42.894831][ T4255] btrfs_release_global_block_rsv+0x38/0x22c [ 42.895757][ T4255] btrfs_free_block_groups+0x7b8/0xb20 [ 42.896569][ T4255] close_ctree+0x62c/0x848 [ 42.897159][ T4255] btrfs_put_super+0x40/0x50 [ 42.897801][ T4255] generic_shutdown_super+0x138/0x2f8 [ 42.898613][ T4255] kill_anon_super+0x4c/0x80 [ 42.899333][ T4255] btrfs_kill_super+0x44/0x5c [ 42.900010][ T4255] deactivate_locked_super+0xc0/0x13c [ 42.900909][ T4255] deactivate_super+0xf0/0x110 [ 42.901593][ T4255] cleanup_mnt+0x3bc/0x470 [ 42.902290][ T4255] __cleanup_mnt+0x20/0x30 [ 42.903004][ T4255] task_work_run+0x13c/0x1e8 [ 42.903662][ T4255] do_notify_resume+0x2488/0x30a8 [ 42.904328][ T4255] el0_svc+0xf0/0x1d0 [ 42.904917][ T4255] el0t_64_sync_handler+0xcc/0xe4 [ 42.905693][ T4255] el0t_64_sync+0x1a0/0x1a4 [ 42.906342][ T4255] irq event stamp: 190222 [ 42.906940][ T4255] hardirqs last enabled at (190221): [] kasan_quarantine_put+0xc4/0x200 [ 42.908388][ T4255] hardirqs last disabled at (190222): [] el1_dbg+0x24/0x80 [ 42.909649][ T4255] softirqs last enabled at (187084): [] local_bh_enable+0x10/0x34 [ 42.911061][ T4255] softirqs last disabled at (187082): [] local_bh_disable+0x10/0x34 [ 42.912427][ T4255] ---[ end trace 89e47276819b71c1 ]--- [ 42.990127][ T4425] Bluetooth: hci0: command 0x0409 tx timeout [ 43.116820][ T4503] loop0: detected capacity change from 0 to 32768 [ 43.119401][ T4503] BTRFS: device fsid 24c7a497-3402-47dd-bef8-82358f5f30e0 devid 1 transid 8 /dev/loop0 scanned by syz-executor.0 (4503) [ 43.123296][ T4503] BTRFS info (device loop0): using crc32c (crc32c-generic) checksum algorithm [ 43.124696][ T4503] BTRFS info (device loop0): setting nodatasum [ 43.125616][ T4503] BTRFS info (device loop0): enabling ssd optimizations [ 43.126850][ T4503] BTRFS info (device loop0): max_inline at 0 [ 43.127654][ T4503] BTRFS info (device loop0): using free space tree [ 43.128666][ T4503] BTRFS info (device loop0): has skinny extents [ 43.173688][ T4503] FAULT_INJECTION: forcing a failure. [ 43.173688][ T4503] name failslab, interval 1, probability 0, space 0, times 0 [ 43.175662][ T4503] CPU: 1 PID: 4503 Comm: syz-executor.0 Tainted: G W syzkaller #0 [ 43.176875][ T4503] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/02/2026 [ 43.178384][ T4503] Call trace: [ 43.178809][ T4503] dump_backtrace+0x0/0x458 [ 43.179414][ T4503] show_stack+0x2c/0x3c [ 43.179960][ T4503] __dump_stack+0x30/0x40 [ 43.180565][ T4503] dump_stack_lvl+0xf4/0x15c [ 43.181174][ T4503] dump_stack+0x1c/0x5c [ 43.181707][ T4503] should_fail+0x3c8/0x520 [ 43.182404][ T4503] __should_failslab+0xbc/0x10c [ 43.183116][ T4503] should_failslab+0x10/0x28 [ 43.183715][ T4503] slab_pre_alloc_hook+0x64/0xe8 [ 43.184347][ T4503] kmem_cache_alloc+0x94/0x3d8 [ 43.185103][ T4503] btrfs_add_delayed_tree_ref+0x1b0/0xda4 [ 43.185938][ T4503] btrfs_alloc_tree_block+0xb2c/0x10f0 [ 43.186770][ T4503] btrfs_force_cow_block+0x3ac/0x172c [ 43.187532][ T4503] btrfs_cow_block+0x2d4/0x674 [ 43.188174][ T4503] btrfs_search_slot+0xa10/0x1ec8 [ 43.188834][ T4503] btrfs_insert_empty_items+0x1e8/0x2b0 [ 43.189588][ T4503] btrfs_insert_inode_ref+0x150/0xa24 [ 43.190250][ T4503] btrfs_add_link+0x244/0xac8 [ 43.190953][ T4503] btrfs_link+0x3a4/0x67c [ 43.191502][ T4503] vfs_link+0x5b4/0x748 [ 43.192095][ T4503] do_linkat+0x248/0x754 [ 43.192673][ T4503] __arm64_sys_linkat+0xec/0x108 [ 43.193345][ T4503] invoke_syscall+0x98/0x28c [ 43.193962][ T4503] el0_svc_common+0x13c/0x258 [ 43.194652][ T4503] do_el0_svc+0x5c/0x140 [ 43.195242][ T4503] el0_svc+0x78/0x1d0 [ 43.195821][ T4503] el0t_64_sync_handler+0xcc/0xe4 [ 43.196522][ T4503] el0t_64_sync+0x1a0/0x1a4 [ 43.233644][ T4255] ------------[ cut here ]------------ [ 43.234516][ T4255] WARNING: CPU: 0 PID: 4255 at fs/btrfs/space-info.h:110 btrfs_space_info_update_bytes_may_use+0x2b8/0x664 [ 43.236227][ T4255] Modules linked in: [ 43.236801][ T4255] CPU: 0 PID: 4255 Comm: syz-executor.0 Tainted: G W syzkaller #0 [ 43.238117][ T4255] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/02/2026 [ 43.239460][ T4255] pstate: 82400005 (Nzcv daif +PAN -UAO +TCO -DIT -SSBS BTYPE=--) [ 43.240588][ T4255] pc : btrfs_space_info_update_bytes_may_use+0x2b8/0x664 [ 43.241511][ T4255] lr : btrfs_space_info_update_bytes_may_use+0x2b4/0x664 [ 43.242533][ T4255] sp : ffff80001f2d7740 [ 43.243103][ T4255] x29: ffff80001f2d7750 x28: 0000000000000000 x27: 1fffe0001947ed0c [ 43.244276][ T4255] x26: dfff800000000000 x25: ffff80001438d110 x24: 0000000000000001 [ 43.245352][ T4255] x23: 0000000000000005 x22: 00000000000d0000 x21: 00000000000cf000 [ 43.246469][ T4255] x20: ffff0000ca3f6860 x19: 0000000000000000 x18: 0000000000000000 [ 43.247608][ T4255] x17: 0000000000000000 x16: ffff80001134e478 x15: 0000000000000000 [ 43.248695][ T4255] x14: ffff700003e5aedc x13: 1ffff00003e5aedc x12: 0000000000000004 [ 43.249731][ T4255] x11: ff8080000a08c7a4 x10: 0000000000000000 x9 : ffff80000a08c7a4 [ 43.250869][ T4255] x8 : ffff0000ced51b40 x7 : ffff80000a08ba74 x6 : 0000000000000000 [ 43.251936][ T4255] x5 : 0000000000000000 x4 : 0000000000000001 x3 : ffff8000082db960 [ 43.253008][ T4255] x2 : fffffffffff30000 x1 : 00000000000d0000 x0 : 00000000000cf000 [ 43.254121][ T4255] Call trace: [ 43.254591][ T4255] btrfs_space_info_update_bytes_may_use+0x2b8/0x664 [ 43.255530][ T4255] btrfs_block_rsv_release+0x3bc/0x498 [ 43.256262][ T4255] btrfs_release_global_block_rsv+0x38/0x22c [ 43.257109][ T4255] btrfs_free_block_groups+0x7b8/0xb20 [ 43.257852][ T4255] close_ctree+0x62c/0x848 [ 43.258433][ T4255] btrfs_put_super+0x40/0x50 [ 43.259066][ T4255] generic_shutdown_super+0x138/0x2f8 [ 43.259820][ T4255] kill_anon_super+0x4c/0x80 [ 43.260449][ T4255] btrfs_kill_super+0x44/0x5c [ 43.261069][ T4255] deactivate_locked_super+0xc0/0x13c [ 43.261847][ T4255] deactivate_super+0xf0/0x110 [ 43.262478][ T4255] cleanup_mnt+0x3bc/0x470 [ 43.263122][ T4255] __cleanup_mnt+0x20/0x30 [ 43.263665][ T4255] task_work_run+0x13c/0x1e8 [ 43.264235][ T4255] do_notify_resume+0x2488/0x30a8 [ 43.264922][ T4255] el0_svc+0xf0/0x1d0 [ 43.265383][ T4255] el0t_64_sync_handler+0xcc/0xe4 [ 43.266042][ T4255] el0t_64_sync+0x1a0/0x1a4 [ 43.266650][ T4255] irq event stamp: 220600 [ 43.267253][ T4255] hardirqs last enabled at (220599): [] kasan_quarantine_put+0xc4/0x200 [ 43.268550][ T4255] hardirqs last disabled at (220600): [] el1_dbg+0x24/0x80 [ 43.269692][ T4255] softirqs last enabled at (219818): [] handle_softirqs+0xa70/0xc14 [ 43.270988][ T4255] softirqs last disabled at (219123): [] __irq_exit_rcu+0x240/0x434 [ 43.272281][ T4255] ---[ end trace 89e47276819b71c2 ]--- [ 43.446845][ T4559] loop0: detected capacity change from 0 to 32768 [ 43.449409][ T4559] BTRFS: device fsid 24c7a497-3402-47dd-bef8-82358f5f30e0 devid 1 transid 8 /dev/loop0 scanned by syz-executor.0 (4559) [ 43.455150][ T4559] BTRFS info (device loop0): using crc32c (crc32c-generic) checksum algorithm [ 43.456485][ T4559] BTRFS info (device loop0): setting nodatasum [ 43.457404][ T4559] BTRFS info (device loop0): enabling ssd optimizations [ 43.458413][ T4559] BTRFS info (device loop0): max_inline at 0 [ 43.459224][ T4559] BTRFS info (device loop0): using free space tree [ 43.463485][ T4559] BTRFS info (device loop0): has skinny extents [ 43.528560][ T4559] FAULT_INJECTION: forcing a failure. [ 43.528560][ T4559] name failslab, interval 1, probability 0, space 0, times 0 [ 43.531306][ T4559] CPU: 0 PID: 4559 Comm: syz-executor.0 Tainted: G W syzkaller #0 [ 43.532551][ T4559] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/02/2026 [ 43.533888][ T4559] Call trace: [ 43.534309][ T4559] dump_backtrace+0x0/0x458 [ 43.534935][ T4559] show_stack+0x2c/0x3c [ 43.535489][ T4559] __dump_stack+0x30/0x40 [ 43.536125][ T4559] dump_stack_lvl+0xf4/0x15c [ 43.536764][ T4559] dump_stack+0x1c/0x5c [ 43.537330][ T4559] should_fail+0x3c8/0x520 [ 43.537888][ T4559] __should_failslab+0xbc/0x10c [ 43.538534][ T4559] should_failslab+0x10/0x28 [ 43.539179][ T4559] slab_pre_alloc_hook+0x64/0xe8 [ 43.539811][ T4559] kmem_cache_alloc+0x94/0x3d8 [ 43.540443][ T4559] btrfs_add_delayed_tree_ref+0x194/0xda4 [ 43.541248][ T4559] btrfs_alloc_tree_block+0xb2c/0x10f0 [ 43.541978][ T4559] btrfs_force_cow_block+0x3ac/0x172c [ 43.542698][ T4559] btrfs_cow_block+0x2d4/0x674 [ 43.543373][ T4559] btrfs_search_slot+0xa10/0x1ec8 [ 43.544070][ T4559] btrfs_insert_empty_items+0x1e8/0x2b0 [ 43.544776][ T4559] btrfs_insert_inode_ref+0x150/0xa24 [ 43.545518][ T4559] btrfs_add_link+0x244/0xac8 [ 43.546104][ T4559] btrfs_link+0x3a4/0x67c [ 43.546720][ T4559] vfs_link+0x5b4/0x748 [ 43.547322][ T4559] do_linkat+0x248/0x754 [ 43.547891][ T4559] __arm64_sys_linkat+0xec/0x108 [ 43.548520][ T4559] invoke_syscall+0x98/0x28c [ 43.549132][ T4559] el0_svc_common+0x13c/0x258 [ 43.549759][ T4559] do_el0_svc+0x5c/0x140 [ 43.550323][ T4559] el0_svc+0x78/0x1d0 [ 43.550911][ T4559] el0t_64_sync_handler+0xcc/0xe4 [ 43.551561][ T4559] el0t_64_sync+0x1a0/0x1a4 [ 43.590637][ T4255] ------------[ cut here ]------------ [ 43.591527][ T4255] WARNING: CPU: 1 PID: 4255 at fs/btrfs/space-info.h:110 btrfs_space_info_update_bytes_may_use+0x2b8/0x664 [ 43.593138][ T4255] Modules linked in: [ 43.593715][ T4255] CPU: 1 PID: 4255 Comm: syz-executor.0 Tainted: G W syzkaller #0 [ 43.594891][ T4255] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/02/2026 [ 43.596318][ T4255] pstate: 82400005 (Nzcv daif +PAN -UAO +TCO -DIT -SSBS BTYPE=--) [ 43.597409][ T4255] pc : btrfs_space_info_update_bytes_may_use+0x2b8/0x664 [ 43.598506][ T4255] lr : btrfs_space_info_update_bytes_may_use+0x2b4/0x664 [ 43.599449][ T4255] sp : ffff80001f2d7740 [ 43.600031][ T4255] x29: ffff80001f2d7750 x28: 0000000000000000 x27: 1fffe000194a2a0c [ 43.601116][ T4255] x26: dfff800000000000 x25: ffff80001438d110 x24: 0000000000000002 [ 43.602263][ T4255] x23: 0000000000000005 x22: 00000000000d0000 x21: 00000000000cf000 [ 43.603315][ T4255] x20: ffff0000ca515060 x19: 0000000000000000 x18: 0000000000000000 [ 43.604296][ T4255] x17: 0000000000000000 x16: ffff80001134e478 x15: 0000000000000000 [ 43.605304][ T4255] x14: ffff700003e5aedc x13: 1ffff00003e5aedc x12: 0000000000000004 [ 43.606357][ T4255] x11: ff8080000a08c7a4 x10: 0000000000000000 x9 : ffff80000a08c7a4 [ 43.607417][ T4255] x8 : ffff0000ced51b40 x7 : ffff80000a08ba74 x6 : 0000000000000000 [ 43.608533][ T4255] x5 : 0000000000000000 x4 : 0000000000000001 x3 : ffff8000082db960 [ 43.609594][ T4255] x2 : fffffffffff30000 x1 : 00000000000d0000 x0 : 00000000000cf000 [ 43.610700][ T4255] Call trace: [ 43.611153][ T4255] btrfs_space_info_update_bytes_may_use+0x2b8/0x664 [ 43.612148][ T4255] btrfs_block_rsv_release+0x3bc/0x498 [ 43.612912][ T4255] btrfs_release_global_block_rsv+0x38/0x22c [ 43.613703][ T4255] btrfs_free_block_groups+0x7b8/0xb20 [ 43.614439][ T4255] close_ctree+0x62c/0x848 [ 43.615104][ T4255] btrfs_put_super+0x40/0x50 [ 43.615723][ T4255] generic_shutdown_super+0x138/0x2f8 [ 43.616402][ T4255] kill_anon_super+0x4c/0x80 [ 43.617021][ T4255] btrfs_kill_super+0x44/0x5c [ 43.617655][ T4255] deactivate_locked_super+0xc0/0x13c [ 43.618365][ T4255] deactivate_super+0xf0/0x110 [ 43.618975][ T4255] cleanup_mnt+0x3bc/0x470 [ 43.619534][ T4255] __cleanup_mnt+0x20/0x30 [ 43.620102][ T4255] task_work_run+0x13c/0x1e8 [ 43.620754][ T4255] do_notify_resume+0x2488/0x30a8 [ 43.621507][ T4255] el0_svc+0xf0/0x1d0 [ 43.622132][ T4255] el0t_64_sync_handler+0xcc/0xe4 [ 43.622868][ T4255] el0t_64_sync+0x1a0/0x1a4 [ 43.623541][ T4255] irq event stamp: 252548 [ 43.624082][ T4255] hardirqs last enabled at (252547): [] kasan_quarantine_put+0xc4/0x200 [ 43.625382][ T4255] hardirqs last disabled at (252548): [] el1_dbg+0x24/0x80 [ 43.626614][ T4255] softirqs last enabled at (252006): [] handle_softirqs+0xa70/0xc14 [ 43.627853][ T4255] softirqs last disabled at (251519): [] __irq_exit_rcu+0x240/0x434 [ 43.629177][ T4255] ---[ end trace 89e47276819b71c3 ]--- [ 43.774714][ T4601] loop0: detected capacity change from 0 to 32768 [ 43.777245][ T4601] BTRFS: device fsid 24c7a497-3402-47dd-bef8-82358f5f30e0 devid 1 transid 8 /dev/loop0 scanned by syz-executor.0 (4601) [ 43.781823][ T4601] BTRFS info (device loop0): using crc32c (crc32c-generic) checksum algorithm [ 43.783530][ T4601] BTRFS info (device loop0): setting nodatasum [ 43.784465][ T4601] BTRFS info (device loop0): enabling ssd optimizations [ 43.785450][ T4601] BTRFS info (device loop0): max_inline at 0 [ 43.786237][ T4601] BTRFS info (device loop0): using free space tree [ 43.787162][ T4601] BTRFS info (device loop0): has skinny extents [ 43.799535][ T4601] FAULT_INJECTION: forcing a failure. [ 43.799535][ T4601] name failslab, interval 1, probability 0, space 0, times 0 [ 43.801703][ T4601] CPU: 1 PID: 4601 Comm: syz-executor.0 Tainted: G W syzkaller #0 [ 43.803026][ T4601] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/02/2026 [ 43.804348][ T4601] Call trace: [ 43.804835][ T4601] dump_backtrace+0x0/0x458 [ 43.805433][ T4601] show_stack+0x2c/0x3c [ 43.805965][ T4601] __dump_stack+0x30/0x40 [ 43.806534][ T4601] dump_stack_lvl+0xf4/0x15c [ 43.807165][ T4601] dump_stack+0x1c/0x5c [ 43.807771][ T4601] should_fail+0x3c8/0x520 [ 43.808416][ T4601] __should_failslab+0xbc/0x10c [ 43.809048][ T4601] should_failslab+0x10/0x28 [ 43.809685][ T4601] slab_pre_alloc_hook+0x64/0xe8 [ 43.810410][ T4601] kmem_cache_alloc+0x94/0x3d8 [ 43.811035][ T4601] btrfs_add_delayed_tree_ref+0x194/0xda4 [ 43.811794][ T4601] btrfs_alloc_tree_block+0xb2c/0x10f0 [ 43.812577][ T4601] btrfs_force_cow_block+0x3ac/0x172c [ 43.813333][ T4601] btrfs_cow_block+0x2d4/0x674 [ 43.813976][ T4601] btrfs_search_slot+0xa10/0x1ec8 [ 43.814671][ T4601] btrfs_insert_empty_items+0x1e8/0x2b0 [ 43.815417][ T4601] btrfs_insert_inode_ref+0x150/0xa24 [ 43.816242][ T4601] btrfs_add_link+0x244/0xac8 [ 43.816880][ T4601] btrfs_link+0x3a4/0x67c [ 43.817434][ T4601] vfs_link+0x5b4/0x748 [ 43.818057][ T4601] do_linkat+0x248/0x754 [ 43.818664][ T4601] __arm64_sys_linkat+0xec/0x108 [ 43.819321][ T4601] invoke_syscall+0x98/0x28c [ 43.820012][ T4601] el0_svc_common+0x13c/0x258 [ 43.820674][ T4601] do_el0_svc+0x5c/0x140 [ 43.821360][ T4601] el0_svc+0x78/0x1d0 [ 43.821897][ T4601] el0t_64_sync_handler+0xcc/0xe4 [ 43.822536][ T4601] el0t_64_sync+0x1a0/0x1a4 [ 43.856388][ T4255] ------------[ cut here ]------------ [ 43.857241][ T4255] WARNING: CPU: 1 PID: 4255 at fs/btrfs/space-info.h:110 btrfs_space_info_update_bytes_may_use+0x2b8/0x664 [ 43.858865][ T4255] Modules linked in: [ 43.859376][ T4255] CPU: 1 PID: 4255 Comm: syz-executor.0 Tainted: G W syzkaller #0 [ 43.860556][ T4255] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/02/2026 [ 43.862001][ T4255] pstate: 82400005 (Nzcv daif +PAN -UAO +TCO -DIT -SSBS BTYPE=--) [ 43.863009][ T4255] pc : btrfs_space_info_update_bytes_may_use+0x2b8/0x664 [ 43.863977][ T4255] lr : btrfs_space_info_update_bytes_may_use+0x2b4/0x664 [ 43.864906][ T4255] sp : ffff80001f2d7740 [ 43.865480][ T4255] x29: ffff80001f2d7750 x28: 0000000000000000 x27: 1fffe0001838db0c [ 43.866620][ T4255] x26: dfff800000000000 x25: ffff80001438d110 x24: 0000000000000002 [ 43.867703][ T4255] x23: 0000000000000005 x22: 00000000000d0000 x21: 00000000000cf000 [ 43.868846][ T4255] x20: ffff0000c1c6d860 x19: 0000000000000000 x18: 0000000000000000 [ 43.869962][ T4255] x17: 0000000000000000 x16: ffff80001134e478 x15: 0000000000000000 [ 43.871127][ T4255] x14: ffff700003e5aedc x13: 1ffff00003e5aedc x12: 0000000000000004 [ 43.872155][ T4255] x11: ff8080000a08c7a4 x10: 0000000000000000 x9 : ffff80000a08c7a4 [ 43.873298][ T4255] x8 : ffff0000ced51b40 x7 : ffff80000a08ba74 x6 : 0000000000000000 [ 43.874390][ T4255] x5 : 0000000000000000 x4 : 0000000000000001 x3 : ffff8000082db960 [ 43.875522][ T4255] x2 : fffffffffff30000 x1 : 00000000000d0000 x0 : 00000000000cf000 [ 43.876652][ T4255] Call trace: [ 43.877115][ T4255] btrfs_space_info_update_bytes_may_use+0x2b8/0x664 [ 43.877997][ T4255] btrfs_block_rsv_release+0x3bc/0x498 [ 43.878782][ T4255] btrfs_release_global_block_rsv+0x38/0x22c [ 43.879671][ T4255] btrfs_free_block_groups+0x7b8/0xb20 [ 43.880342][ T4255] close_ctree+0x62c/0x848 [ 43.880916][ T4255] btrfs_put_super+0x40/0x50 [ 43.881542][ T4255] generic_shutdown_super+0x138/0x2f8 [ 43.882307][ T4255] kill_anon_super+0x4c/0x80 [ 43.882960][ T4255] btrfs_kill_super+0x44/0x5c [ 43.883574][ T4255] deactivate_locked_super+0xc0/0x13c [ 43.884374][ T4255] deactivate_super+0xf0/0x110 [ 43.885004][ T4255] cleanup_mnt+0x3bc/0x470 [ 43.885577][ T4255] __cleanup_mnt+0x20/0x30 [ 43.886197][ T4255] task_work_run+0x13c/0x1e8 [ 43.886825][ T4255] do_notify_resume+0x2488/0x30a8 [ 43.887542][ T4255] el0_svc+0xf0/0x1d0 [ 43.888117][ T4255] el0t_64_sync_handler+0xcc/0xe4 [ 43.888764][ T4255] el0t_64_sync+0x1a0/0x1a4 [ 43.889339][ T4255] irq event stamp: 282498 [ 43.889950][ T4255] hardirqs last enabled at (282497): [] kasan_quarantine_put+0xc4/0x200 [ 43.891382][ T4255] hardirqs last disabled at (282498): [] el1_dbg+0x24/0x80 [ 43.892638][ T4255] softirqs last enabled at (282064): [] handle_softirqs+0xa70/0xc14 [ 43.893936][ T4255] softirqs last disabled at (282055): [] __irq_exit_rcu+0x240/0x434 [ 43.895218][ T4255] ---[ end trace 89e47276819b71c4 ]--- [ 44.052522][ T4622] loop0: detected capacity change from 0 to 32768 [ 44.055125][ T4622] BTRFS: device fsid 24c7a497-3402-47dd-bef8-82358f5f30e0 devid 1 transid 8 /dev/loop0 scanned by syz-executor.0 (4622) [ 44.058179][ T4622] BTRFS info (device loop0): using crc32c (crc32c-generic) checksum algorithm [ 44.059488][ T4622] BTRFS info (device loop0): setting nodatasum [ 44.060435][ T4622] BTRFS info (device loop0): enabling ssd optimizations [ 44.061637][ T4622] BTRFS info (device loop0): max_inline at 0 [ 44.062569][ T4622] BTRFS info (device loop0): using free space tree [ 44.063565][ T4622] BTRFS info (device loop0): has skinny extents [ 44.075273][ T4622] FAULT_INJECTION: forcing a failure. [ 44.075273][ T4622] name failslab, interval 1, probability 0, space 0, times 0 [ 44.077459][ T4622] CPU: 1 PID: 4622 Comm: syz-executor.0 Tainted: G W syzkaller #0 [ 44.078715][ T4622] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/02/2026 [ 44.080177][ T4622] Call trace: [ 44.080627][ T4622] dump_backtrace+0x0/0x458 [ 44.081294][ T4622] show_stack+0x2c/0x3c [ 44.081848][ T4622] __dump_stack+0x30/0x40 [ 44.082387][ T4622] dump_stack_lvl+0xf4/0x15c [ 44.083014][ T4622] dump_stack+0x1c/0x5c [ 44.083526][ T4622] should_fail+0x3c8/0x520 [ 44.084172][ T4622] __should_failslab+0xbc/0x10c [ 44.084906][ T4622] should_failslab+0x10/0x28 [ 44.085558][ T4622] slab_pre_alloc_hook+0x64/0xe8 [ 44.086182][ T4622] kmem_cache_alloc+0x94/0x3d8 [ 44.086886][ T4622] btrfs_alloc_tree_block+0x9dc/0x10f0 [ 44.087697][ T4622] btrfs_force_cow_block+0x3ac/0x172c [ 44.088478][ T4622] btrfs_cow_block+0x2d4/0x674 [ 44.089230][ T4622] btrfs_search_slot+0xa10/0x1ec8 [ 44.089905][ T4622] btrfs_insert_empty_items+0x1e8/0x2b0 [ 44.090623][ T4622] btrfs_insert_inode_ref+0x150/0xa24 [ 44.091430][ T4622] btrfs_add_link+0x244/0xac8 [ 44.092043][ T4622] btrfs_link+0x3a4/0x67c [ 44.092622][ T4622] vfs_link+0x5b4/0x748 [ 44.093214][ T4622] do_linkat+0x248/0x754 [ 44.093841][ T4622] __arm64_sys_linkat+0xec/0x108 [ 44.094498][ T4622] invoke_syscall+0x98/0x28c [ 44.095125][ T4622] el0_svc_common+0x13c/0x258 [ 44.095788][ T4622] do_el0_svc+0x5c/0x140 [ 44.096447][ T4622] el0_svc+0x78/0x1d0 [ 44.097089][ T4622] el0t_64_sync_handler+0xcc/0xe4 [ 44.097838][ T4622] el0t_64_sync+0x1a0/0x1a4 [ 44.133747][ T4255] ------------[ cut here ]------------ [ 44.134636][ T4255] WARNING: CPU: 1 PID: 4255 at fs/btrfs/space-info.h:110 btrfs_space_info_update_bytes_may_use+0x2b8/0x664 [ 44.136248][ T4255] Modules linked in: [ 44.136742][ T4255] CPU: 1 PID: 4255 Comm: syz-executor.0 Tainted: G W syzkaller #0 [ 44.137876][ T4255] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/02/2026 [ 44.139113][ T4255] pstate: 82400005 (Nzcv daif +PAN -UAO +TCO -DIT -SSBS BTYPE=--) [ 44.140161][ T4255] pc : btrfs_space_info_update_bytes_may_use+0x2b8/0x664 [ 44.141156][ T4255] lr : btrfs_space_info_update_bytes_may_use+0x2b4/0x664 [ 44.142199][ T4255] sp : ffff80001f2d7740 [ 44.142699][ T4255] x29: ffff80001f2d7750 x28: 0000000000000000 x27: 1fffe0001b3b060c [ 44.143756][ T4255] x26: dfff800000000000 x25: ffff80001438d110 x24: 0000000000000002 [ 44.144913][ T4255] x23: 0000000000000005 x22: 00000000000d0000 x21: 00000000000cf000 [ 44.146012][ T4255] x20: ffff0000d9d83060 x19: 0000000000000000 x18: 0000000000000000 [ 44.147031][ T4255] x17: 0000000000000000 x16: ffff80001134e478 x15: 0000000000000000 [ 44.148173][ T4255] x14: ffff700003e5aedc x13: 1ffff00003e5aedc x12: 0000000000000004 [ 44.149256][ T4255] x11: ff8080000a08c7a4 x10: 0000000000000000 x9 : ffff80000a08c7a4 [ 44.150337][ T4255] x8 : ffff0000ced51b40 x7 : ffff80000a08ba74 x6 : 0000000000000000 [ 44.151475][ T4255] x5 : 0000000000000000 x4 : 0000000000000001 x3 : ffff8000082db960 [ 44.152513][ T4255] x2 : fffffffffff30000 x1 : 00000000000d0000 x0 : 00000000000cf000 [ 44.153554][ T4255] Call trace: [ 44.153995][ T4255] btrfs_space_info_update_bytes_may_use+0x2b8/0x664 [ 44.154915][ T4255] btrfs_block_rsv_release+0x3bc/0x498 [ 44.155662][ T4255] btrfs_release_global_block_rsv+0x38/0x22c [ 44.156446][ T4255] btrfs_free_block_groups+0x7b8/0xb20 [ 44.157113][ T4255] close_ctree+0x62c/0x848 [ 44.157764][ T4255] btrfs_put_super+0x40/0x50 [ 44.158397][ T4255] generic_shutdown_super+0x138/0x2f8 [ 44.159037][ T4255] kill_anon_super+0x4c/0x80 [ 44.159676][ T4255] btrfs_kill_super+0x44/0x5c [ 44.160347][ T4255] deactivate_locked_super+0xc0/0x13c [ 44.161114][ T4255] deactivate_super+0xf0/0x110 [ 44.161699][ T4255] cleanup_mnt+0x3bc/0x470 [ 44.162280][ T4255] __cleanup_mnt+0x20/0x30 [ 44.162943][ T4255] task_work_run+0x13c/0x1e8 [ 44.163599][ T4255] do_notify_resume+0x2488/0x30a8 [ 44.164311][ T4255] el0_svc+0xf0/0x1d0 [ 44.164829][ T4255] el0t_64_sync_handler+0xcc/0xe4 [ 44.165504][ T4255] el0t_64_sync+0x1a0/0x1a4 [ 44.166160][ T4255] irq event stamp: 311962 [ 44.166713][ T4255] hardirqs last enabled at (311961): [] kasan_quarantine_put+0xc4/0x200 [ 44.168014][ T4255] hardirqs last disabled at (311962): [] el1_dbg+0x24/0x80 [ 44.169198][ T4255] softirqs last enabled at (310312): [] handle_softirqs+0xa70/0xc14 [ 44.170490][ T4255] softirqs last disabled at (310291): [] __irq_exit_rcu+0x240/0x434 [ 44.171814][ T4255] ---[ end trace 89e47276819b71c5 ]--- [ 44.324561][ T4643] loop0: detected capacity change from 0 to 32768 [ 44.327117][ T4643] BTRFS: device fsid 24c7a497-3402-47dd-bef8-82358f5f30e0 devid 1 transid 8 /dev/loop0 scanned by syz-executor.0 (4643) [ 44.331935][ T4643] BTRFS info (device loop0): using crc32c (crc32c-generic) checksum algorithm [ 44.333291][ T4643] BTRFS info (device loop0): setting nodatasum [ 44.334169][ T4643] BTRFS info (device loop0): enabling ssd optimizations [ 44.335208][ T4643] BTRFS info (device loop0): max_inline at 0 [ 44.335992][ T4643] BTRFS info (device loop0): using free space tree [ 44.336901][ T4643] BTRFS info (device loop0): has skinny extents [ 44.350292][ T4643] FAULT_INJECTION: forcing a failure. [ 44.350292][ T4643] name failslab, interval 1, probability 0, space 0, times 0 [ 44.352280][ T4643] CPU: 0 PID: 4643 Comm: syz-executor.0 Tainted: G W syzkaller #0 [ 44.353638][ T4643] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/02/2026 [ 44.354924][ T4643] Call trace: [ 44.355345][ T4643] dump_backtrace+0x0/0x458 [ 44.355963][ T4643] show_stack+0x2c/0x3c [ 44.356552][ T4643] __dump_stack+0x30/0x40 [ 44.357116][ T4643] dump_stack_lvl+0xf4/0x15c [ 44.357801][ T4643] dump_stack+0x1c/0x5c [ 44.358361][ T4643] should_fail+0x3c8/0x520 [ 44.358973][ T4643] __should_failslab+0xbc/0x10c [ 44.359625][ T4643] should_failslab+0x10/0x28 [ 44.360307][ T4643] slab_pre_alloc_hook+0x64/0xe8 [ 44.361065][ T4643] kmem_cache_alloc+0x94/0x3d8 [ 44.361720][ T4643] btrfs_alloc_tree_block+0x9dc/0x10f0 [ 44.362497][ T4643] btrfs_force_cow_block+0x3ac/0x172c [ 44.363181][ T4643] btrfs_cow_block+0x2d4/0x674 [ 44.363815][ T4643] btrfs_search_slot+0xa10/0x1ec8 [ 44.364501][ T4643] btrfs_insert_empty_items+0x1e8/0x2b0 [ 44.365274][ T4643] btrfs_insert_inode_ref+0x150/0xa24 [ 44.365942][ T4643] btrfs_add_link+0x244/0xac8 [ 44.366609][ T4643] btrfs_link+0x3a4/0x67c [ 44.367197][ T4643] vfs_link+0x5b4/0x748 [ 44.367798][ T4643] do_linkat+0x248/0x754 [ 44.368388][ T4643] __arm64_sys_linkat+0xec/0x108 [ 44.369068][ T4643] invoke_syscall+0x98/0x28c [ 44.369702][ T4643] el0_svc_common+0x13c/0x258 [ 44.370373][ T4643] do_el0_svc+0x5c/0x140 [ 44.371001][ T4643] el0_svc+0x78/0x1d0 [ 44.371496][ T4643] el0t_64_sync_handler+0xcc/0xe4 [ 44.372147][ T4643] el0t_64_sync+0x1a0/0x1a4 [ 44.406921][ T4255] ------------[ cut here ]------------ [ 44.407728][ T4255] WARNING: CPU: 1 PID: 4255 at fs/btrfs/space-info.h:110 btrfs_space_info_update_bytes_may_use+0x2b8/0x664 [ 44.409399][ T4255] Modules linked in: [ 44.409925][ T4255] CPU: 1 PID: 4255 Comm: syz-executor.0 Tainted: G W syzkaller #0 [ 44.411138][ T4255] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/02/2026 [ 44.412368][ T4255] pstate: 82400005 (Nzcv daif +PAN -UAO +TCO -DIT -SSBS BTYPE=--) [ 44.413419][ T4255] pc : btrfs_space_info_update_bytes_may_use+0x2b8/0x664 [ 44.414373][ T4255] lr : btrfs_space_info_update_bytes_may_use+0x2b4/0x664 [ 44.415471][ T4255] sp : ffff80001f2d7740 [ 44.416081][ T4255] x29: ffff80001f2d7750 x28: 0000000000000000 x27: 1fffe0001b3f7e0c [ 44.417181][ T4255] x26: dfff800000000000 x25: ffff80001438d110 x24: 0000000000000002 [ 44.418283][ T4255] x23: 0000000000000005 x22: 00000000000d0000 x21: 00000000000cf000 [ 44.419357][ T4255] x20: ffff0000d9fbf060 x19: 0000000000000000 x18: 0000000000000000 [ 44.420467][ T4255] x17: 0000000000000000 x16: ffff80001134e478 x15: 0000000000000000 [ 44.421575][ T4255] x14: ffff700003e5aedc x13: 1ffff00003e5aedc x12: 0000000000000004 [ 44.422735][ T4255] x11: ff8080000a08c7a4 x10: 0000000000000000 x9 : ffff80000a08c7a4 [ 44.423783][ T4255] x8 : ffff0000ced51b40 x7 : ffff80000a08ba74 x6 : 0000000000000000 [ 44.424867][ T4255] x5 : 0000000000000000 x4 : 0000000000000001 x3 : ffff8000082db960 [ 44.425988][ T4255] x2 : fffffffffff30000 x1 : 00000000000d0000 x0 : 00000000000cf000 [ 44.427090][ T4255] Call trace: [ 44.427494][ T4255] btrfs_space_info_update_bytes_may_use+0x2b8/0x664 [ 44.428369][ T4255] btrfs_block_rsv_release+0x3bc/0x498 [ 44.429085][ T4255] btrfs_release_global_block_rsv+0x38/0x22c [ 44.429821][ T4255] btrfs_free_block_groups+0x7b8/0xb20 [ 44.430532][ T4255] close_ctree+0x62c/0x848 [ 44.431095][ T4255] btrfs_put_super+0x40/0x50 [ 44.431791][ T4255] generic_shutdown_super+0x138/0x2f8 [ 44.432584][ T4255] kill_anon_super+0x4c/0x80 [ 44.433230][ T4255] btrfs_kill_super+0x44/0x5c [ 44.433849][ T4255] deactivate_locked_super+0xc0/0x13c [ 44.434593][ T4255] deactivate_super+0xf0/0x110 [ 44.435260][ T4255] cleanup_mnt+0x3bc/0x470 [ 44.435857][ T4255] __cleanup_mnt+0x20/0x30 [ 44.436431][ T4255] task_work_run+0x13c/0x1e8 [ 44.437038][ T4255] do_notify_resume+0x2488/0x30a8 [ 44.437783][ T4255] el0_svc+0xf0/0x1d0 [ 44.438388][ T4255] el0t_64_sync_handler+0xcc/0xe4 [ 44.439101][ T4255] el0t_64_sync+0x1a0/0x1a4 [ 44.439721][ T4255] irq event stamp: 341864 [ 44.440371][ T4255] hardirqs last enabled at (341863): [] kasan_quarantine_put+0xc4/0x200 [ 44.441794][ T4255] hardirqs last disabled at (341864): [] el1_dbg+0x24/0x80 [ 44.443084][ T4255] softirqs last enabled at (338190): [] local_bh_enable+0x10/0x34 [ 44.444397][ T4255] softirqs last disabled at (338188): [] local_bh_disable+0x10/0x34 [ 44.445721][ T4255] ---[ end trace 89e47276819b71c6 ]--- [ 44.597458][ T4664] loop0: detected capacity change from 0 to 32768 [ 44.599926][ T4664] BTRFS: device fsid 24c7a497-3402-47dd-bef8-82358f5f30e0 devid 1 transid 8 /dev/loop0 scanned by syz-executor.0 (4664) [ 44.608751][ T4664] BTRFS info (device loop0): using crc32c (crc32c-generic) checksum algorithm [ 44.610448][ T4664] BTRFS info (device loop0): setting nodatasum [ 44.612072][ T4664] BTRFS info (device loop0): enabling ssd optimizations [ 44.613126][ T4664] BTRFS info (device loop0): max_inline at 0 [ 44.613998][ T4664] BTRFS info (device loop0): using free space tree [ 44.614944][ T4664] BTRFS info (device loop0): has skinny extents [ 44.631664][ T4664] FAULT_INJECTION: forcing a failure. [ 44.631664][ T4664] name failslab, interval 1, probability 0, space 0, times 0 [ 44.633461][ T4664] CPU: 1 PID: 4664 Comm: syz-executor.0 Tainted: G W syzkaller #0 [ 44.634692][ T4664] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/02/2026 [ 44.636143][ T4664] Call trace: [ 44.636594][ T4664] dump_backtrace+0x0/0x458 [ 44.637192][ T4664] show_stack+0x2c/0x3c [ 44.637768][ T4664] __dump_stack+0x30/0x40 [ 44.638385][ T4664] dump_stack_lvl+0xf4/0x15c [ 44.639025][ T4664] dump_stack+0x1c/0x5c [ 44.639629][ T4664] should_fail+0x3c8/0x520 [ 44.640206][ T4664] __should_failslab+0xbc/0x10c [ 44.640841][ T4664] should_failslab+0x10/0x28 [ 44.641426][ T4664] slab_pre_alloc_hook+0x64/0xe8 [ 44.642114][ T4664] kmem_cache_alloc+0x94/0x3d8 [ 44.642723][ T4664] btrfs_add_delayed_tree_ref+0x194/0xda4 [ 44.643551][ T4664] btrfs_alloc_tree_block+0xb2c/0x10f0 [ 44.644299][ T4664] btrfs_force_cow_block+0x3ac/0x172c [ 44.645014][ T4664] btrfs_cow_block+0x2d4/0x674 [ 44.645671][ T4664] btrfs_search_slot+0xa10/0x1ec8 [ 44.646310][ T4664] btrfs_insert_empty_items+0x1e8/0x2b0 [ 44.647071][ T4664] btrfs_insert_inode_ref+0x150/0xa24 [ 44.647795][ T4664] btrfs_add_link+0x244/0xac8 [ 44.648415][ T4664] btrfs_link+0x3a4/0x67c [ 44.648985][ T4664] vfs_link+0x5b4/0x748 [ 44.649601][ T4664] do_linkat+0x248/0x754 [ 44.650313][ T4664] __arm64_sys_linkat+0xec/0x108 [ 44.651063][ T4664] invoke_syscall+0x98/0x28c [ 44.651694][ T4664] el0_svc_common+0x13c/0x258 [ 44.652288][ T4664] do_el0_svc+0x5c/0x140 [ 44.652816][ T4664] el0_svc+0x78/0x1d0 [ 44.653351][ T4664] el0t_64_sync_handler+0xcc/0xe4 [ 44.653983][ T4664] el0t_64_sync+0x1a0/0x1a4 [ 44.686329][ T4255] ------------[ cut here ]------------ [ 44.687184][ T4255] WARNING: CPU: 0 PID: 4255 at fs/btrfs/space-info.h:110 btrfs_space_info_update_bytes_may_use+0x2b8/0x664 [ 44.688694][ T4255] Modules linked in: [ 44.689265][ T4255] CPU: 0 PID: 4255 Comm: syz-executor.0 Tainted: G W syzkaller #0 [ 44.690701][ T4255] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/02/2026 [ 44.692143][ T4255] pstate: 82400005 (Nzcv daif +PAN -UAO +TCO -DIT -SSBS BTYPE=--) [ 44.693191][ T4255] pc : btrfs_space_info_update_bytes_may_use+0x2b8/0x664 [ 44.694209][ T4255] lr : btrfs_space_info_update_bytes_may_use+0x2b4/0x664 [ 44.695338][ T4255] sp : ffff80001f2d7740 [ 44.695953][ T4255] x29: ffff80001f2d7750 x28: 0000000000000000 x27: 1fffe0001a52130c [ 44.697135][ T4255] x26: dfff800000000000 x25: ffff80001438d110 x24: 0000000000000001 [ 44.698518][ T4255] x23: 0000000000000005 x22: 00000000000d0000 x21: 00000000000cf000 [ 44.699836][ T4255] x20: ffff0000d2909860 x19: 0000000000000000 x18: 0000000000000000 [ 44.701062][ T4255] x17: 0000000000000000 x16: ffff80001134e478 x15: 0000000000000000 [ 44.702226][ T4255] x14: ffff700003e5aedc x13: 1ffff00003e5aedc x12: 0000000000000004 [ 44.703475][ T4255] x11: ff8080000a08c7a4 x10: 0000000000000000 x9 : ffff80000a08c7a4 [ 44.704622][ T4255] x8 : ffff0000ced51b40 x7 : ffff80000a08ba74 x6 : 0000000000000000 [ 44.705810][ T4255] x5 : 0000000000000000 x4 : 0000000000000001 x3 : ffff8000082db960 [ 44.707022][ T4255] x2 : fffffffffff30000 x1 : 00000000000d0000 x0 : 00000000000cf000 [ 44.708272][ T4255] Call trace: [ 44.708804][ T4255] btrfs_space_info_update_bytes_may_use+0x2b8/0x664 [ 44.709697][ T4255] btrfs_block_rsv_release+0x3bc/0x498 [ 44.710527][ T4255] btrfs_release_global_block_rsv+0x38/0x22c [ 44.711438][ T4255] btrfs_free_block_groups+0x7b8/0xb20 [ 44.712285][ T4255] close_ctree+0x62c/0x848 [ 44.712906][ T4255] btrfs_put_super+0x40/0x50 [ 44.713519][ T4255] generic_shutdown_super+0x138/0x2f8 [ 44.714430][ T4255] kill_anon_super+0x4c/0x80 [ 44.715126][ T4255] btrfs_kill_super+0x44/0x5c [ 44.715771][ T4255] deactivate_locked_super+0xc0/0x13c [ 44.716560][ T4255] deactivate_super+0xf0/0x110 [ 44.717181][ T4255] cleanup_mnt+0x3bc/0x470 [ 44.717871][ T4255] __cleanup_mnt+0x20/0x30 [ 44.718461][ T4255] task_work_run+0x13c/0x1e8 [ 44.719074][ T4255] do_notify_resume+0x2488/0x30a8 [ 44.719878][ T4255] el0_svc+0xf0/0x1d0 [ 44.720447][ T4255] el0t_64_sync_handler+0xcc/0xe4 [ 44.721139][ T4255] el0t_64_sync+0x1a0/0x1a4 [ 44.721787][ T4255] irq event stamp: 371050 [ 44.722401][ T4255] hardirqs last enabled at (371049): [] kasan_quarantine_put+0xc4/0x200 [ 44.723851][ T4255] hardirqs last disabled at (371050): [] el1_dbg+0x24/0x80 [ 44.725022][ T4255] softirqs last enabled at (368164): [] local_bh_enable+0x10/0x34 [ 44.726262][ T4255] softirqs last disabled at (368162): [] local_bh_disable+0x10/0x34 [ 44.727674][ T4255] ---[ end trace 89e47276819b71c7 ]--- [ 44.892537][ T4688] loop0: detected capacity change from 0 to 32768 [ 44.895768][ T4688] BTRFS: device fsid 24c7a497-3402-47dd-bef8-82358f5f30e0 devid 1 transid 8 /dev/loop0 scanned by syz-executor.0 (4688) [ 44.898629][ T4688] BTRFS info (device loop0): using crc32c (crc32c-generic) checksum algorithm [ 44.900619][ T4688] BTRFS info (device loop0): setting nodatasum [ 44.901455][ T4688] BTRFS info (device loop0): enabling ssd optimizations [ 44.902506][ T4688] BTRFS info (device loop0): max_inline at 0 [ 44.903243][ T4688] BTRFS info (device loop0): using free space tree [ 44.904240][ T4688] BTRFS info (device loop0): has skinny extents [ 44.916285][ T4688] FAULT_INJECTION: forcing a failure. [ 44.916285][ T4688] name failslab, interval 1, probability 0, space 0, times 0 [ 44.918121][ T4688] CPU: 1 PID: 4688 Comm: syz-executor.0 Tainted: G W syzkaller #0 [ 44.919309][ T4688] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/02/2026 [ 44.920670][ T4688] Call trace: [ 44.921200][ T4688] dump_backtrace+0x0/0x458 [ 44.921833][ T4688] show_stack+0x2c/0x3c [ 44.922386][ T4688] __dump_stack+0x30/0x40 [ 44.922977][ T4688] dump_stack_lvl+0xf4/0x15c [ 44.923724][ T4688] dump_stack+0x1c/0x5c [ 44.924371][ T4688] should_fail+0x3c8/0x520 [ 44.925028][ T4688] __should_failslab+0xbc/0x10c [ 44.925667][ T4688] should_failslab+0x10/0x28 [ 44.926284][ T4688] slab_pre_alloc_hook+0x64/0xe8 [ 44.926889][ T4688] kmem_cache_alloc+0x94/0x3d8 [ 44.927560][ T4688] btrfs_add_delayed_tree_ref+0x1b0/0xda4 [ 44.928415][ T4688] btrfs_alloc_tree_block+0xb2c/0x10f0 [ 44.929170][ T4688] btrfs_force_cow_block+0x3ac/0x172c [ 44.929933][ T4688] btrfs_cow_block+0x2d4/0x674 [ 44.930558][ T4688] btrfs_search_slot+0xa10/0x1ec8 [ 44.931244][ T4688] btrfs_insert_empty_items+0x1e8/0x2b0 [ 44.931941][ T4688] btrfs_insert_inode_ref+0x150/0xa24 [ 44.932685][ T4688] btrfs_add_link+0x244/0xac8 [ 44.933348][ T4688] btrfs_link+0x3a4/0x67c [ 44.934227][ T4688] vfs_link+0x5b4/0x748 [ 44.934817][ T4688] do_linkat+0x248/0x754 [ 44.935339][ T4688] __arm64_sys_linkat+0xec/0x108 [ 44.935997][ T4688] invoke_syscall+0x98/0x28c [ 44.936573][ T4688] el0_svc_common+0x13c/0x258 [ 44.937210][ T4688] do_el0_svc+0x5c/0x140 [ 44.937825][ T4688] el0_svc+0x78/0x1d0 [ 44.938414][ T4688] el0t_64_sync_handler+0xcc/0xe4 [ 44.939065][ T4688] el0t_64_sync+0x1a0/0x1a4 [ 44.973097][ T4255] ------------[ cut here ]------------ [ 44.973932][ T4255] WARNING: CPU: 0 PID: 4255 at fs/btrfs/space-info.h:110 btrfs_space_info_update_bytes_may_use+0x2b8/0x664 [ 44.975595][ T4255] Modules linked in: [ 44.976169][ T4255] CPU: 0 PID: 4255 Comm: syz-executor.0 Tainted: G W syzkaller #0 [ 44.977498][ T4255] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/02/2026 [ 44.978826][ T4255] pstate: 82400005 (Nzcv daif +PAN -UAO +TCO -DIT -SSBS BTYPE=--) [ 44.979937][ T4255] pc : btrfs_space_info_update_bytes_may_use+0x2b8/0x664 [ 44.980959][ T4255] lr : btrfs_space_info_update_bytes_may_use+0x2b4/0x664 [ 44.982002][ T4255] sp : ffff80001f2d7740 [ 44.982629][ T4255] x29: ffff80001f2d7750 x28: 0000000000000000 x27: 1fffe0001ac1c00c [ 44.984007][ T4255] x26: dfff800000000000 x25: ffff80001438d110 x24: 0000000000000001 [ 44.985351][ T4255] x23: 0000000000000005 x22: 00000000000d0000 x21: 00000000000cf000 [ 44.986554][ T4255] x20: ffff0000d60e0060 x19: 0000000000000000 x18: 0000000000000000 [ 44.987733][ T4255] x17: 0000000000000000 x16: ffff80001134e478 x15: 0000000000000000 [ 44.989003][ T4255] x14: ffff700003e5aedc x13: 1ffff00003e5aedc x12: 0000000000000004 [ 44.990308][ T4255] x11: ff8080000a08c7a4 x10: 0000000000000000 x9 : ffff80000a08c7a4 [ 44.991544][ T4255] x8 : ffff0000ced51b40 x7 : ffff80000a08ba74 x6 : 0000000000000000 [ 44.992698][ T4255] x5 : 0000000000000000 x4 : 0000000000000001 x3 : ffff8000082db960 [ 44.993917][ T4255] x2 : fffffffffff30000 x1 : 00000000000d0000 x0 : 00000000000cf000 [ 44.995296][ T4255] Call trace: [ 44.995829][ T4255] btrfs_space_info_update_bytes_may_use+0x2b8/0x664 [ 44.996854][ T4255] btrfs_block_rsv_release+0x3bc/0x498 [ 44.997728][ T4255] btrfs_release_global_block_rsv+0x38/0x22c [ 44.998661][ T4255] btrfs_free_block_groups+0x7b8/0xb20 [ 44.999473][ T4255] close_ctree+0x62c/0x848 [ 45.000108][ T4255] btrfs_put_super+0x40/0x50 [ 45.000752][ T4255] generic_shutdown_super+0x138/0x2f8 [ 45.001463][ T4255] kill_anon_super+0x4c/0x80 [ 45.002116][ T4255] btrfs_kill_super+0x44/0x5c [ 45.002749][ T4255] deactivate_locked_super+0xc0/0x13c [ 45.003514][ T4255] deactivate_super+0xf0/0x110 [ 45.004283][ T4255] cleanup_mnt+0x3bc/0x470 [ 45.005028][ T4255] __cleanup_mnt+0x20/0x30 [ 45.005725][ T4255] task_work_run+0x13c/0x1e8 [ 45.006390][ T4255] do_notify_resume+0x2488/0x30a8 [ 45.007085][ T4255] el0_svc+0xf0/0x1d0 [ 45.007666][ T4255] el0t_64_sync_handler+0xcc/0xe4 [ 45.008421][ T4255] el0t_64_sync+0x1a0/0x1a4 [ 45.009098][ T4255] irq event stamp: 399818 [ 45.009698][ T4255] hardirqs last enabled at (399817): [] kasan_quarantine_put+0xc4/0x200 [ 45.011252][ T4255] hardirqs last disabled at (399818): [] el1_dbg+0x24/0x80 [ 45.012527][ T4255] softirqs last enabled at (397982): [] handle_softirqs+0xa70/0xc14 [ 45.013970][ T4255] softirqs last disabled at (397961): [] __irq_exit_rcu+0x240/0x434 [ 45.015406][ T4255] ---[ end trace 89e47276819b71c8 ]--- [ 45.060031][ T4425] Bluetooth: hci0: command 0x041b tx timeout [ 45.163169][ T4709] loop0: detected capacity change from 0 to 32768 [ 45.168450][ T4709] BTRFS: device fsid 24c7a497-3402-47dd-bef8-82358f5f30e0 devid 1 transid 8 /dev/loop0 scanned by syz-executor.0 (4709) [ 45.173000][ T4709] BTRFS info (device loop0): using crc32c (crc32c-generic) checksum algorithm [ 45.174345][ T4709] BTRFS info (device loop0): setting nodatasum [ 45.175321][ T4709] BTRFS info (device loop0): enabling ssd optimizations [ 45.176399][ T4709] BTRFS info (device loop0): max_inline at 0 [ 45.177212][ T4709] BTRFS info (device loop0): using free space tree [ 45.178200][ T4709] BTRFS info (device loop0): has skinny extents [ 45.190488][ T4709] FAULT_INJECTION: forcing a failure. [ 45.190488][ T4709] name failslab, interval 1, probability 0, space 0, times 0 [ 45.192466][ T4709] CPU: 1 PID: 4709 Comm: syz-executor.0 Tainted: G W syzkaller #0 [ 45.193800][ T4709] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/02/2026 [ 45.195195][ T4709] Call trace: [ 45.195734][ T4709] dump_backtrace+0x0/0x458 [ 45.196376][ T4709] show_stack+0x2c/0x3c [ 45.196989][ T4709] __dump_stack+0x30/0x40 [ 45.197608][ T4709] dump_stack_lvl+0xf4/0x15c [ 45.198252][ T4709] dump_stack+0x1c/0x5c [ 45.199047][ T4709] should_fail+0x3c8/0x520 [ 45.199646][ T4709] __should_failslab+0xbc/0x10c [ 45.200358][ T4709] should_failslab+0x10/0x28 [ 45.200996][ T4709] slab_pre_alloc_hook+0x64/0xe8 [ 45.201756][ T4709] kmem_cache_alloc+0x94/0x3d8 [ 45.202421][ T4709] alloc_extent_state+0x38/0x434 [ 45.203115][ T4709] set_extent_bit+0x1ac/0x13a8 [ 45.203795][ T4709] btrfs_alloc_tree_block+0x930/0x10f0 [ 45.204535][ T4709] btrfs_force_cow_block+0x3ac/0x172c [ 45.205290][ T4709] btrfs_cow_block+0x2d4/0x674 [ 45.205959][ T4709] btrfs_search_slot+0xa10/0x1ec8 [ 45.206670][ T4709] btrfs_insert_empty_items+0x1e8/0x2b0 [ 45.207375][ T4709] btrfs_insert_inode_ref+0x150/0xa24 [ 45.208152][ T4709] btrfs_add_link+0x244/0xac8 [ 45.208904][ T4709] btrfs_link+0x3a4/0x67c [ 45.209420][ T4709] vfs_link+0x5b4/0x748 [ 45.209916][ T4709] do_linkat+0x248/0x754 [ 45.210504][ T4709] __arm64_sys_linkat+0xec/0x108 [ 45.211199][ T4709] invoke_syscall+0x98/0x28c [ 45.211833][ T4709] el0_svc_common+0x13c/0x258 [ 45.212471][ T4709] do_el0_svc+0x5c/0x140 [ 45.213075][ T4709] el0_svc+0x78/0x1d0 [ 45.213625][ T4709] el0t_64_sync_handler+0xcc/0xe4 [ 45.214340][ T4709] el0t_64_sync+0x1a0/0x1a4 [ 45.405625][ T4730] BTRFS: device fsid 24c7a497-3402-47dd-bef8-82358f5f30e0 devid 1 transid 8 /dev/loop0 scanned by syz-executor.0 (4730) [ 45.409738][ T4730] BTRFS info (device loop0): using crc32c (crc32c-generic) checksum algorithm [ 45.411099][ T4730] BTRFS info (device loop0): setting nodatasum [ 45.411962][ T4730] BTRFS info (device loop0): enabling ssd optimizations [ 45.413113][ T4730] BTRFS info (device loop0): max_inline at 0 [ 45.413935][ T4730] BTRFS info (device loop0): using free space tree [ 45.414878][ T4730] BTRFS info (device loop0): has skinny extents [ 45.430884][ T4730] FAULT_INJECTION: forcing a failure. [ 45.430884][ T4730] name failslab, interval 1, probability 0, space 0, times 0 [ 45.432806][ T4730] CPU: 0 PID: 4730 Comm: syz-executor.0 Tainted: G W syzkaller #0 [ 45.434175][ T4730] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/02/2026 [ 45.435731][ T4730] Call trace: [ 45.436225][ T4730] dump_backtrace+0x0/0x458 [ 45.436847][ T4730] show_stack+0x2c/0x3c [ 45.437445][ T4730] __dump_stack+0x30/0x40 [ 45.438069][ T4730] dump_stack_lvl+0xf4/0x15c [ 45.438682][ T4730] dump_stack+0x1c/0x5c [ 45.439256][ T4730] should_fail+0x3c8/0x520 [ 45.439970][ T4730] __should_failslab+0xbc/0x10c [ 45.440682][ T4730] should_failslab+0x10/0x28 [ 45.441441][ T4730] slab_pre_alloc_hook+0x64/0xe8 [ 45.442152][ T4730] kmem_cache_alloc+0x94/0x3d8 [ 45.442872][ T4730] alloc_extent_state+0x38/0x434 [ 45.443641][ T4730] set_extent_bit+0x1ac/0x13a8 [ 45.444338][ T4730] btrfs_alloc_tree_block+0x930/0x10f0 [ 45.445096][ T4730] btrfs_force_cow_block+0x3ac/0x172c [ 45.445873][ T4730] btrfs_cow_block+0x2d4/0x674 [ 45.446597][ T4730] btrfs_search_slot+0xa10/0x1ec8 [ 45.447438][ T4730] btrfs_insert_empty_items+0x1e8/0x2b0 [ 45.448276][ T4730] btrfs_insert_inode_ref+0x150/0xa24 [ 45.449013][ T4730] btrfs_add_link+0x244/0xac8 [ 45.449678][ T4730] btrfs_link+0x3a4/0x67c [ 45.450254][ T4730] vfs_link+0x5b4/0x748 [ 45.450782][ T4730] do_linkat+0x248/0x754 [ 45.451405][ T4730] __arm64_sys_linkat+0xec/0x108 [ 45.452073][ T4730] invoke_syscall+0x98/0x28c [ 45.452696][ T4730] el0_svc_common+0x13c/0x258 [ 45.453302][ T4730] do_el0_svc+0x5c/0x140 [ 45.453891][ T4730] el0_svc+0x78/0x1d0 [ 45.454381][ T4730] el0t_64_sync_handler+0xcc/0xe4 [ 45.455144][ T4730] el0t_64_sync+0x1a0/0x1a4 [ 45.646638][ T4751] BTRFS: device fsid 24c7a497-3402-47dd-bef8-82358f5f30e0 devid 1 transid 8 /dev/loop0 scanned by syz-executor.0 (4751) [ 45.649974][ T4751] BTRFS info (device loop0): using crc32c (crc32c-generic) checksum algorithm [ 45.651341][ T4751] BTRFS info (device loop0): setting nodatasum [ 45.652215][ T4751] BTRFS info (device loop0): enabling ssd optimizations [ 45.653204][ T4751] BTRFS info (device loop0): max_inline at 0 [ 45.654008][ T4751] BTRFS info (device loop0): using free space tree [ 45.654962][ T4751] BTRFS info (device loop0): has skinny extents [ 45.675137][ T4751] FAULT_INJECTION: forcing a failure. [ 45.675137][ T4751] name failslab, interval 1, probability 0, space 0, times 0 [ 45.677214][ T4751] CPU: 0 PID: 4751 Comm: syz-executor.0 Tainted: G W syzkaller #0 [ 45.678603][ T4751] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/02/2026 [ 45.680013][ T4751] Call trace: [ 45.680472][ T4751] dump_backtrace+0x0/0x458 [ 45.681149][ T4751] show_stack+0x2c/0x3c [ 45.681765][ T4751] __dump_stack+0x30/0x40 [ 45.682352][ T4751] dump_stack_lvl+0xf4/0x15c [ 45.683032][ T4751] dump_stack+0x1c/0x5c [ 45.683652][ T4751] should_fail+0x3c8/0x520 [ 45.684294][ T4751] __should_failslab+0xbc/0x10c [ 45.684941][ T4751] should_failslab+0x10/0x28 [ 45.685610][ T4751] slab_pre_alloc_hook+0x64/0xe8 [ 45.686302][ T4751] kmem_cache_alloc+0x94/0x3d8 [ 45.686956][ T4751] btrfs_add_delayed_tree_ref+0x194/0xda4 [ 45.687767][ T4751] btrfs_alloc_tree_block+0xb2c/0x10f0 [ 45.688542][ T4751] btrfs_force_cow_block+0x3ac/0x172c [ 45.689332][ T4751] btrfs_cow_block+0x2d4/0x674 [ 45.690007][ T4751] btrfs_search_slot+0xa10/0x1ec8 [ 45.690752][ T4751] btrfs_insert_empty_items+0x1e8/0x2b0 [ 45.691622][ T4751] btrfs_insert_inode_ref+0x150/0xa24 [ 45.692430][ T4751] btrfs_add_link+0x244/0xac8 [ 45.693034][ T4751] btrfs_link+0x3a4/0x67c [ 45.693630][ T4751] vfs_link+0x5b4/0x748 [ 45.694232][ T4751] do_linkat+0x248/0x754 [ 45.694841][ T4751] __arm64_sys_linkat+0xec/0x108 [ 45.695515][ T4751] invoke_syscall+0x98/0x28c [ 45.696220][ T4751] el0_svc_common+0x13c/0x258 [ 45.696916][ T4751] do_el0_svc+0x5c/0x140 [ 45.697526][ T4751] el0_svc+0x78/0x1d0 [ 45.698059][ T4751] el0t_64_sync_handler+0xcc/0xe4 [ 45.698765][ T4751] el0t_64_sync+0x1a0/0x1a4 [ 45.732561][ T4255] ------------[ cut here ]------------ [ 45.733389][ T4255] WARNING: CPU: 0 PID: 4255 at fs/btrfs/space-info.h:110 btrfs_space_info_update_bytes_may_use+0x2b8/0x664 [ 45.734942][ T4255] Modules linked in: [ 45.735468][ T4255] CPU: 0 PID: 4255 Comm: syz-executor.0 Tainted: G W syzkaller #0 [ 45.736601][ T4255] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/02/2026 [ 45.738022][ T4255] pstate: 82400005 (Nzcv daif +PAN -UAO +TCO -DIT -SSBS BTYPE=--) [ 45.739110][ T4255] pc : btrfs_space_info_update_bytes_may_use+0x2b8/0x664 [ 45.740147][ T4255] lr : btrfs_space_info_update_bytes_may_use+0x2b4/0x664 [ 45.741158][ T4255] sp : ffff80001f2d7740 [ 45.741712][ T4255] x29: ffff80001f2d7750 x28: 0000000000000000 x27: 1fffe0001b5a1d0c [ 45.742889][ T4255] x26: dfff800000000000 x25: ffff80001438d110 x24: 0000000000000001 [ 45.743983][ T4255] x23: 0000000000000005 x22: 00000000000d0000 x21: 00000000000cf000 [ 45.744960][ T4255] x20: ffff0000dad0e860 x19: 0000000000000000 x18: 0000000000000000 [ 45.746099][ T4255] x17: 0000000000000000 x16: ffff80001134e478 x15: 0000000000000000 [ 45.747074][ T4255] x14: ffff700003e5aedc x13: 1ffff00003e5aedc x12: 0000000000000004 [ 45.748176][ T4255] x11: ff8080000a08c7a4 x10: 0000000000000000 x9 : ffff80000a08c7a4 [ 45.749302][ T4255] x8 : ffff0000ced51b40 x7 : ffff80000a08ba74 x6 : 0000000000000000 [ 45.750314][ T4255] x5 : 0000000000000000 x4 : 0000000000000001 x3 : ffff8000082db960 [ 45.751468][ T4255] x2 : fffffffffff30000 x1 : 00000000000d0000 x0 : 00000000000cf000 [ 45.752603][ T4255] Call trace: [ 45.753074][ T4255] btrfs_space_info_update_bytes_may_use+0x2b8/0x664 [ 45.754025][ T4255] btrfs_block_rsv_release+0x3bc/0x498 [ 45.754767][ T4255] btrfs_release_global_block_rsv+0x38/0x22c [ 45.755612][ T4255] btrfs_free_block_groups+0x7b8/0xb20 [ 45.756419][ T4255] close_ctree+0x62c/0x848 [ 45.757043][ T4255] btrfs_put_super+0x40/0x50 [ 45.757682][ T4255] generic_shutdown_super+0x138/0x2f8 [ 45.758430][ T4255] kill_anon_super+0x4c/0x80 [ 45.759119][ T4255] btrfs_kill_super+0x44/0x5c [ 45.759761][ T4255] deactivate_locked_super+0xc0/0x13c [ 45.760502][ T4255] deactivate_super+0xf0/0x110 [ 45.761163][ T4255] cleanup_mnt+0x3bc/0x470 [ 45.761697][ T4255] __cleanup_mnt+0x20/0x30 [ 45.762260][ T4255] task_work_run+0x13c/0x1e8 [ 45.762844][ T4255] do_notify_resume+0x2488/0x30a8 [ 45.763564][ T4255] el0_svc+0xf0/0x1d0 [ 45.764122][ T4255] el0t_64_sync_handler+0xcc/0xe4 [ 45.764771][ T4255] el0t_64_sync+0x1a0/0x1a4 [ 45.765364][ T4255] irq event stamp: 489106 [ 45.765928][ T4255] hardirqs last enabled at (489105): [] kasan_quarantine_put+0xc4/0x200 [ 45.767279][ T4255] hardirqs last disabled at (489106): [] el1_dbg+0x24/0x80 [ 45.768493][ T4255] softirqs last enabled at (486014): [] local_bh_enable+0x10/0x34 [ 45.769858][ T4255] softirqs last disabled at (486012): [] local_bh_disable+0x10/0x34 [ 45.771084][ T4255] ---[ end trace 89e47276819b71c9 ]--- [ 45.929533][ T4772] BTRFS: device fsid 24c7a497-3402-47dd-bef8-82358f5f30e0 devid 1 transid 8 /dev/loop0 scanned by syz-executor.0 (4772) [ 45.940583][ T4772] BTRFS info (device loop0): using crc32c (crc32c-generic) checksum algorithm [ 45.941914][ T4772] BTRFS info (device loop0): setting nodatasum [ 45.942699][ T4772] BTRFS info (device loop0): enabling ssd optimizations [ 45.943649][ T4772] BTRFS info (device loop0): max_inline at 0 [ 45.944576][ T4772] BTRFS info (device loop0): using free space tree [ 45.945460][ T4772] BTRFS info (device loop0): has skinny extents [ 45.960495][ T4772] FAULT_INJECTION: forcing a failure. [ 45.960495][ T4772] name failslab, interval 1, probability 0, space 0, times 0 [ 45.962495][ T4772] CPU: 0 PID: 4772 Comm: syz-executor.0 Tainted: G W syzkaller #0 [ 45.963770][ T4772] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/02/2026 [ 45.965086][ T4772] Call trace: [ 45.965512][ T4772] dump_backtrace+0x0/0x458 [ 45.966129][ T4772] show_stack+0x2c/0x3c [ 45.966669][ T4772] __dump_stack+0x30/0x40 [ 45.967238][ T4772] dump_stack_lvl+0xf4/0x15c [ 45.967855][ T4772] dump_stack+0x1c/0x5c [ 45.968406][ T4772] should_fail+0x3c8/0x520 [ 45.968990][ T4772] __should_failslab+0xbc/0x10c [ 45.969668][ T4772] should_failslab+0x10/0x28 [ 45.970358][ T4772] slab_pre_alloc_hook+0x64/0xe8 [ 45.971023][ T4772] kmem_cache_alloc+0x94/0x3d8 [ 45.971689][ T4772] btrfs_add_delayed_tree_ref+0x194/0xda4 [ 45.972421][ T4772] btrfs_alloc_tree_block+0xb2c/0x10f0 [ 45.973207][ T4772] btrfs_force_cow_block+0x3ac/0x172c [ 45.973935][ T4772] btrfs_cow_block+0x2d4/0x674 [ 45.974581][ T4772] btrfs_search_slot+0xa10/0x1ec8 [ 45.975270][ T4772] btrfs_insert_empty_items+0x1e8/0x2b0 [ 45.976014][ T4772] btrfs_insert_inode_ref+0x150/0xa24 [ 45.976818][ T4772] btrfs_add_link+0x244/0xac8 [ 45.977549][ T4772] btrfs_link+0x3a4/0x67c [ 45.978132][ T4772] vfs_link+0x5b4/0x748 [ 45.978696][ T4772] do_linkat+0x248/0x754 [ 45.979338][ T4772] __arm64_sys_linkat+0xec/0x108 [ 45.980070][ T4772] invoke_syscall+0x98/0x28c [ 45.980709][ T4772] el0_svc_common+0x13c/0x258 [ 45.981353][ T4772] do_el0_svc+0x5c/0x140 [ 45.981943][ T4772] el0_svc+0x78/0x1d0 [ 45.982423][ T4772] el0t_64_sync_handler+0xcc/0xe4 [ 45.983132][ T4772] el0t_64_sync+0x1a0/0x1a4 1970/01/01 00:00:45 executed programs: 13 [ 46.014955][ T4255] ------------[ cut here ]------------ [ 46.015768][ T4255] WARNING: CPU: 0 PID: 4255 at fs/btrfs/space-info.h:110 btrfs_space_info_update_bytes_may_use+0x2b8/0x664 [ 46.017315][ T4255] Modules linked in: [ 46.017850][ T4255] CPU: 0 PID: 4255 Comm: syz-executor.0 Tainted: G W syzkaller #0 [ 46.019110][ T4255] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/02/2026 [ 46.020415][ T4255] pstate: 82400005 (Nzcv daif +PAN -UAO +TCO -DIT -SSBS BTYPE=--) [ 46.021475][ T4255] pc : btrfs_space_info_update_bytes_may_use+0x2b8/0x664 [ 46.022419][ T4255] lr : btrfs_space_info_update_bytes_may_use+0x2b4/0x664 [ 46.023525][ T4255] sp : ffff80001f2d7740 [ 46.024125][ T4255] x29: ffff80001f2d7750 x28: 0000000000000000 x27: 1fffe0001ac0f50c [ 46.025309][ T4255] x26: dfff800000000000 x25: ffff80001438d110 x24: 0000000000000001 [ 46.026665][ T4255] x23: 0000000000000005 x22: 00000000000d0000 x21: 00000000000cf000 [ 46.027928][ T4255] x20: ffff0000d607a860 x19: 0000000000000000 x18: 0000000000000000 [ 46.029148][ T4255] x17: 0000000000000000 x16: ffff80001134e478 x15: 0000000000000000 [ 46.030343][ T4255] x14: ffff700003e5aedc x13: 1ffff00003e5aedc x12: 0000000000000004 [ 46.031496][ T4255] x11: ff8080000a08c7a4 x10: 0000000000000000 x9 : ffff80000a08c7a4 [ 46.032660][ T4255] x8 : ffff0000ced51b40 x7 : ffff80000a08ba74 x6 : 0000000000000000 [ 46.033771][ T4255] x5 : 0000000000000000 x4 : 0000000000000001 x3 : ffff8000082db960 [ 46.034913][ T4255] x2 : fffffffffff30000 x1 : 00000000000d0000 x0 : 00000000000cf000 [ 46.036065][ T4255] Call trace: [ 46.036594][ T4255] btrfs_space_info_update_bytes_may_use+0x2b8/0x664 [ 46.037613][ T4255] btrfs_block_rsv_release+0x3bc/0x498 [ 46.038362][ T4255] btrfs_release_global_block_rsv+0x38/0x22c [ 46.039267][ T4255] btrfs_free_block_groups+0x7b8/0xb20 [ 46.040068][ T4255] close_ctree+0x62c/0x848 [ 46.040691][ T4255] btrfs_put_super+0x40/0x50 [ 46.041413][ T4255] generic_shutdown_super+0x138/0x2f8 [ 46.042173][ T4255] kill_anon_super+0x4c/0x80 [ 46.042799][ T4255] btrfs_kill_super+0x44/0x5c [ 46.043557][ T4255] deactivate_locked_super+0xc0/0x13c [ 46.044406][ T4255] deactivate_super+0xf0/0x110 [ 46.045074][ T4255] cleanup_mnt+0x3bc/0x470 [ 46.045770][ T4255] __cleanup_mnt+0x20/0x30 [ 46.046545][ T4255] task_work_run+0x13c/0x1e8 [ 46.047308][ T4255] do_notify_resume+0x2488/0x30a8 [ 46.048113][ T4255] el0_svc+0xf0/0x1d0 [ 46.048808][ T4255] el0t_64_sync_handler+0xcc/0xe4 [ 46.049646][ T4255] el0t_64_sync+0x1a0/0x1a4 [ 46.050336][ T4255] irq event stamp: 519382 [ 46.051016][ T4255] hardirqs last enabled at (519381): [] kasan_quarantine_put+0xc4/0x200 [ 46.052433][ T4255] hardirqs last disabled at (519382): [] el1_dbg+0x24/0x80 [ 46.053617][ T4255] softirqs last enabled at (518486): [] handle_softirqs+0xa70/0xc14 [ 46.054941][ T4255] softirqs last disabled at (518469): [] __irq_exit_rcu+0x240/0x434 [ 46.056363][ T4255] ---[ end trace 89e47276819b71ca ]--- [ 46.206263][ T4797] BTRFS: device fsid 24c7a497-3402-47dd-bef8-82358f5f30e0 devid 1 transid 8 /dev/loop0 scanned by syz-executor.0 (4797) [ 46.210632][ T4797] BTRFS info (device loop0): using crc32c (crc32c-generic) checksum algorithm [ 46.213451][ T4797] BTRFS info (device loop0): setting nodatasum [ 46.214420][ T4797] BTRFS info (device loop0): enabling ssd optimizations [ 46.215648][ T4797] BTRFS info (device loop0): max_inline at 0 [ 46.216484][ T4797] BTRFS info (device loop0): using free space tree [ 46.217513][ T4797] BTRFS info (device loop0): has skinny extents [ 46.231239][ T4797] FAULT_INJECTION: forcing a failure. [ 46.231239][ T4797] name failslab, interval 1, probability 0, space 0, times 0 [ 46.233286][ T4797] CPU: 1 PID: 4797 Comm: syz-executor.0 Tainted: G W syzkaller #0 [ 46.234647][ T4797] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/02/2026 [ 46.236017][ T4797] Call trace: [ 46.236488][ T4797] dump_backtrace+0x0/0x458 [ 46.237174][ T4797] show_stack+0x2c/0x3c [ 46.237797][ T4797] __dump_stack+0x30/0x40 [ 46.238466][ T4797] dump_stack_lvl+0xf4/0x15c [ 46.239184][ T4797] dump_stack+0x1c/0x5c [ 46.239788][ T4797] should_fail+0x3c8/0x520 [ 46.240407][ T4797] __should_failslab+0xbc/0x10c [ 46.241131][ T4797] should_failslab+0x10/0x28 [ 46.241854][ T4797] slab_pre_alloc_hook+0x64/0xe8 [ 46.242533][ T4797] kmem_cache_alloc+0x94/0x3d8 [ 46.243340][ T4797] btrfs_alloc_tree_block+0x9dc/0x10f0 [ 46.244164][ T4797] btrfs_force_cow_block+0x3ac/0x172c [ 46.244946][ T4797] btrfs_cow_block+0x2d4/0x674 [ 46.245529][ T4797] btrfs_search_slot+0xa10/0x1ec8 [ 46.246266][ T4797] btrfs_insert_empty_items+0x1e8/0x2b0 [ 46.247112][ T4797] btrfs_insert_inode_ref+0x150/0xa24 [ 46.247889][ T4797] btrfs_add_link+0x244/0xac8 [ 46.248602][ T4797] btrfs_link+0x3a4/0x67c [ 46.249246][ T4797] vfs_link+0x5b4/0x748 [ 46.249870][ T4797] do_linkat+0x248/0x754 [ 46.250528][ T4797] __arm64_sys_linkat+0xec/0x108 [ 46.251201][ T4797] invoke_syscall+0x98/0x28c [ 46.251904][ T4797] el0_svc_common+0x13c/0x258 [ 46.252577][ T4797] do_el0_svc+0x5c/0x140 [ 46.253197][ T4797] el0_svc+0x78/0x1d0 [ 46.253819][ T4797] el0t_64_sync_handler+0xcc/0xe4 [ 46.254523][ T4797] el0t_64_sync+0x1a0/0x1a4 [ 46.288684][ T4255] ------------[ cut here ]------------ [ 46.289485][ T4255] WARNING: CPU: 1 PID: 4255 at fs/btrfs/space-info.h:110 btrfs_space_info_update_bytes_may_use+0x2b8/0x664 [ 46.291164][ T4255] Modules linked in: [ 46.291757][ T4255] CPU: 1 PID: 4255 Comm: syz-executor.0 Tainted: G W syzkaller #0 [ 46.293126][ T4255] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/02/2026 [ 46.294608][ T4255] pstate: 82400005 (Nzcv daif +PAN -UAO +TCO -DIT -SSBS BTYPE=--) [ 46.295817][ T4255] pc : btrfs_space_info_update_bytes_may_use+0x2b8/0x664 [ 46.296930][ T4255] lr : btrfs_space_info_update_bytes_may_use+0x2b4/0x664 [ 46.297946][ T4255] sp : ffff80001f2d7740 [ 46.298476][ T4255] x29: ffff80001f2d7750 x28: 0000000000000000 x27: 1fffe0001b3b890c [ 46.299667][ T4255] x26: dfff800000000000 x25: ffff80001438d110 x24: 0000000000000002 [ 46.300911][ T4255] x23: 0000000000000005 x22: 00000000000d0000 x21: 00000000000cf000 [ 46.301968][ T4255] x20: ffff0000d9dc4860 x19: 0000000000000000 x18: 0000000000000000 [ 46.303109][ T4255] x17: 0000000000000000 x16: ffff80001134e478 x15: 0000000000000000 [ 46.304276][ T4255] x14: ffff700003e5aedc x13: 1ffff00003e5aedc x12: 0000000000000004 [ 46.305483][ T4255] x11: ff8080000a08c7a4 x10: 0000000000000000 x9 : ffff80000a08c7a4 [ 46.306693][ T4255] x8 : ffff0000ced51b40 x7 : ffff80000a08ba74 x6 : 0000000000000000 [ 46.307787][ T4255] x5 : 0000000000000000 x4 : 0000000000000001 x3 : ffff8000082db960 [ 46.308881][ T4255] x2 : fffffffffff30000 x1 : 00000000000d0000 x0 : 00000000000cf000 [ 46.309935][ T4255] Call trace: [ 46.310386][ T4255] btrfs_space_info_update_bytes_may_use+0x2b8/0x664 [ 46.311412][ T4255] btrfs_block_rsv_release+0x3bc/0x498 [ 46.312291][ T4255] btrfs_release_global_block_rsv+0x38/0x22c [ 46.313187][ T4255] btrfs_free_block_groups+0x7b8/0xb20 [ 46.313944][ T4255] close_ctree+0x62c/0x848 [ 46.314617][ T4255] btrfs_put_super+0x40/0x50 [ 46.315290][ T4255] generic_shutdown_super+0x138/0x2f8 [ 46.316104][ T4255] kill_anon_super+0x4c/0x80 [ 46.316762][ T4255] btrfs_kill_super+0x44/0x5c [ 46.317458][ T4255] deactivate_locked_super+0xc0/0x13c [ 46.318298][ T4255] deactivate_super+0xf0/0x110 [ 46.319149][ T4255] cleanup_mnt+0x3bc/0x470 [ 46.319851][ T4255] __cleanup_mnt+0x20/0x30 [ 46.320513][ T4255] task_work_run+0x13c/0x1e8 [ 46.321199][ T4255] do_notify_resume+0x2488/0x30a8 [ 46.321899][ T4255] el0_svc+0xf0/0x1d0 [ 46.322466][ T4255] el0t_64_sync_handler+0xcc/0xe4 [ 46.323218][ T4255] el0t_64_sync+0x1a0/0x1a4 [ 46.323845][ T4255] irq event stamp: 550190 [ 46.324480][ T4255] hardirqs last enabled at (550189): [] kasan_quarantine_put+0xc4/0x200 [ 46.325877][ T4255] hardirqs last disabled at (550190): [] el1_dbg+0x24/0x80 [ 46.327047][ T4255] softirqs last enabled at (546326): [] local_bh_enable+0x10/0x34 [ 46.328417][ T4255] softirqs last disabled at (546324): [] local_bh_disable+0x10/0x34 [ 46.329605][ T4255] ---[ end trace 89e47276819b71cb ]--- [ 46.493949][ T4818] BTRFS: device fsid 24c7a497-3402-47dd-bef8-82358f5f30e0 devid 1 transid 8 /dev/loop0 scanned by syz-executor.0 (4818) [ 46.497292][ T4818] BTRFS info (device loop0): using crc32c (crc32c-generic) checksum algorithm [ 46.498811][ T4818] BTRFS info (device loop0): setting nodatasum [ 46.500299][ T4818] BTRFS info (device loop0): enabling ssd optimizations [ 46.501333][ T4818] BTRFS info (device loop0): max_inline at 0 [ 46.502281][ T4818] BTRFS info (device loop0): using free space tree [ 46.503245][ T4818] BTRFS info (device loop0): has skinny extents [ 46.520755][ T4818] FAULT_INJECTION: forcing a failure. [ 46.520755][ T4818] name failslab, interval 1, probability 0, space 0, times 0 [ 46.522596][ T4818] CPU: 1 PID: 4818 Comm: syz-executor.0 Tainted: G W syzkaller #0 [ 46.523983][ T4818] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/02/2026 [ 46.525343][ T4818] Call trace: [ 46.525785][ T4818] dump_backtrace+0x0/0x458 [ 46.526350][ T4818] show_stack+0x2c/0x3c [ 46.526886][ T4818] __dump_stack+0x30/0x40 [ 46.527447][ T4818] dump_stack_lvl+0xf4/0x15c [ 46.528131][ T4818] dump_stack+0x1c/0x5c [ 46.528691][ T4818] should_fail+0x3c8/0x520 [ 46.529252][ T4818] __should_failslab+0xbc/0x10c [ 46.529917][ T4818] should_failslab+0x10/0x28 [ 46.530578][ T4818] slab_pre_alloc_hook+0x64/0xe8 [ 46.531268][ T4818] kmem_cache_alloc+0x94/0x3d8 [ 46.531899][ T4818] alloc_extent_state+0x38/0x434 [ 46.532612][ T4818] set_extent_bit+0x1ac/0x13a8 [ 46.533275][ T4818] btrfs_alloc_tree_block+0x930/0x10f0 [ 46.534111][ T4818] btrfs_force_cow_block+0x3ac/0x172c [ 46.534784][ T4818] btrfs_cow_block+0x2d4/0x674 [ 46.535422][ T4818] btrfs_search_slot+0xa10/0x1ec8 [ 46.536110][ T4818] btrfs_insert_empty_items+0x1e8/0x2b0 [ 46.536850][ T4818] btrfs_insert_inode_ref+0x150/0xa24 [ 46.537559][ T4818] btrfs_add_link+0x244/0xac8 [ 46.538257][ T4818] btrfs_link+0x3a4/0x67c [ 46.538851][ T4818] vfs_link+0x5b4/0x748 [ 46.539429][ T4818] do_linkat+0x248/0x754 [ 46.540012][ T4818] __arm64_sys_linkat+0xec/0x108 [ 46.540665][ T4818] invoke_syscall+0x98/0x28c [ 46.541243][ T4818] el0_svc_common+0x13c/0x258 [ 46.541889][ T4818] do_el0_svc+0x5c/0x140 [ 46.542485][ T4818] el0_svc+0x78/0x1d0 [ 46.542995][ T4818] el0t_64_sync_handler+0xcc/0xe4 [ 46.543684][ T4818] el0t_64_sync+0x1a0/0x1a4 [ 46.736680][ T4839] BTRFS: device fsid 24c7a497-3402-47dd-bef8-82358f5f30e0 devid 1 transid 8 /dev/loop0 scanned by syz-executor.0 (4839) [ 46.739581][ T4839] BTRFS info (device loop0): using crc32c (crc32c-generic) checksum algorithm [ 46.741215][ T4839] BTRFS info (device loop0): setting nodatasum [ 46.742092][ T4839] BTRFS info (device loop0): enabling ssd optimizations [ 46.743181][ T4839] BTRFS info (device loop0): max_inline at 0 [ 46.743952][ T4839] BTRFS info (device loop0): using free space tree [ 46.744983][ T4839] BTRFS info (device loop0): has skinny extents [ 46.759935][ T4839] FAULT_INJECTION: forcing a failure. [ 46.759935][ T4839] name failslab, interval 1, probability 0, space 0, times 0 [ 46.761836][ T4839] CPU: 1 PID: 4839 Comm: syz-executor.0 Tainted: G W syzkaller #0 [ 46.763274][ T4839] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/02/2026 [ 46.764631][ T4839] Call trace: [ 46.765138][ T4839] dump_backtrace+0x0/0x458 [ 46.765733][ T4839] show_stack+0x2c/0x3c [ 46.766237][ T4839] __dump_stack+0x30/0x40 [ 46.766810][ T4839] dump_stack_lvl+0xf4/0x15c [ 46.767450][ T4839] dump_stack+0x1c/0x5c [ 46.767987][ T4839] should_fail+0x3c8/0x520 [ 46.768635][ T4839] __should_failslab+0xbc/0x10c [ 46.769395][ T4839] should_failslab+0x10/0x28 [ 46.770085][ T4839] slab_pre_alloc_hook+0x64/0xe8 [ 46.770791][ T4839] kmem_cache_alloc+0x94/0x3d8 [ 46.771466][ T4839] btrfs_add_delayed_tree_ref+0x1b0/0xda4 [ 46.772290][ T4839] btrfs_alloc_tree_block+0xb2c/0x10f0 [ 46.773080][ T4839] btrfs_force_cow_block+0x3ac/0x172c [ 46.773749][ T4839] btrfs_cow_block+0x2d4/0x674 [ 46.774374][ T4839] btrfs_search_slot+0xa10/0x1ec8 [ 46.775072][ T4839] btrfs_insert_empty_items+0x1e8/0x2b0 [ 46.775868][ T4839] btrfs_insert_inode_ref+0x150/0xa24 [ 46.776578][ T4839] btrfs_add_link+0x244/0xac8 [ 46.777189][ T4839] btrfs_link+0x3a4/0x67c [ 46.777806][ T4839] vfs_link+0x5b4/0x748 [ 46.778365][ T4839] do_linkat+0x248/0x754 [ 46.778944][ T4839] __arm64_sys_linkat+0xec/0x108 [ 46.779640][ T4839] invoke_syscall+0x98/0x28c [ 46.780300][ T4839] el0_svc_common+0x13c/0x258 [ 46.780904][ T4839] do_el0_svc+0x5c/0x140 [ 46.781529][ T4839] el0_svc+0x78/0x1d0 [ 46.782021][ T4839] el0t_64_sync_handler+0xcc/0xe4 [ 46.782685][ T4839] el0t_64_sync+0x1a0/0x1a4 [ 46.815414][ T4255] ------------[ cut here ]------------ [ 46.816209][ T4255] WARNING: CPU: 1 PID: 4255 at fs/btrfs/space-info.h:110 btrfs_space_info_update_bytes_may_use+0x2b8/0x664 [ 46.817652][ T4255] Modules linked in: [ 46.818114][ T4255] CPU: 1 PID: 4255 Comm: syz-executor.0 Tainted: G W syzkaller #0 [ 46.819237][ T4255] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/02/2026 [ 46.820642][ T4255] pstate: 82400005 (Nzcv daif +PAN -UAO +TCO -DIT -SSBS BTYPE=--) [ 46.821765][ T4255] pc : btrfs_space_info_update_bytes_may_use+0x2b8/0x664 [ 46.822700][ T4255] lr : btrfs_space_info_update_bytes_may_use+0x2b4/0x664 [ 46.823668][ T4255] sp : ffff80001f2d7740 [ 46.824196][ T4255] x29: ffff80001f2d7750 x28: 0000000000000000 x27: 1fffe00018c1450c [ 46.825243][ T4255] x26: dfff800000000000 x25: ffff80001438d110 x24: 0000000000000002 [ 46.826330][ T4255] x23: 0000000000000005 x22: 00000000000d0000 x21: 00000000000cf000 [ 46.827358][ T4255] x20: ffff0000c60a2860 x19: 0000000000000000 x18: 0000000000000000 [ 46.828421][ T4255] x17: 0000000000000000 x16: ffff80001134e478 x15: 0000000000000000 [ 46.829475][ T4255] x14: ffff700003e5aedc x13: 1ffff00003e5aedc x12: 0000000000000004 [ 46.830583][ T4255] x11: ff8080000a08c7a4 x10: 0000000000000000 x9 : ffff80000a08c7a4 [ 46.831630][ T4255] x8 : ffff0000ced51b40 x7 : ffff80000a08ba74 x6 : 0000000000000000 [ 46.832641][ T4255] x5 : 0000000000000000 x4 : 0000000000000001 x3 : ffff8000082db960 [ 46.833738][ T4255] x2 : fffffffffff30000 x1 : 00000000000d0000 x0 : 00000000000cf000 [ 46.834792][ T4255] Call trace: [ 46.835282][ T4255] btrfs_space_info_update_bytes_may_use+0x2b8/0x664 [ 46.836253][ T4255] btrfs_block_rsv_release+0x3bc/0x498 [ 46.836932][ T4255] btrfs_release_global_block_rsv+0x38/0x22c [ 46.837796][ T4255] btrfs_free_block_groups+0x7b8/0xb20 [ 46.838547][ T4255] close_ctree+0x62c/0x848 [ 46.839150][ T4255] btrfs_put_super+0x40/0x50 [ 46.839830][ T4255] generic_shutdown_super+0x138/0x2f8 [ 46.840629][ T4255] kill_anon_super+0x4c/0x80 [ 46.841286][ T4255] btrfs_kill_super+0x44/0x5c [ 46.841922][ T4255] deactivate_locked_super+0xc0/0x13c [ 46.842645][ T4255] deactivate_super+0xf0/0x110 [ 46.843312][ T4255] cleanup_mnt+0x3bc/0x470 [ 46.843921][ T4255] __cleanup_mnt+0x20/0x30 [ 46.844454][ T4255] task_work_run+0x13c/0x1e8 [ 46.845051][ T4255] do_notify_resume+0x2488/0x30a8 [ 46.845736][ T4255] el0_svc+0xf0/0x1d0 [ 46.846294][ T4255] el0t_64_sync_handler+0xcc/0xe4 [ 46.846985][ T4255] el0t_64_sync+0x1a0/0x1a4 [ 46.847561][ T4255] irq event stamp: 611314 [ 46.848131][ T4255] hardirqs last enabled at (611313): [] kasan_quarantine_put+0xc4/0x200 [ 46.849563][ T4255] hardirqs last disabled at (611314): [] el1_dbg+0x24/0x80 [ 46.850750][ T4255] softirqs last enabled at (608756): [] handle_softirqs+0xa70/0xc14 [ 46.852018][ T4255] softirqs last disabled at (608653): [] __irq_exit_rcu+0x240/0x434 [ 46.853307][ T4255] ---[ end trace 89e47276819b71cc ]--- [ 46.998454][ T4860] BTRFS: device fsid 24c7a497-3402-47dd-bef8-82358f5f30e0 devid 1 transid 8 /dev/loop0 scanned by syz-executor.0 (4860) [ 47.002866][ T4860] BTRFS info (device loop0): using crc32c (crc32c-generic) checksum algorithm [ 47.004222][ T4860] BTRFS info (device loop0): setting nodatasum [ 47.005230][ T4860] BTRFS info (device loop0): enabling ssd optimizations [ 47.006470][ T4860] BTRFS info (device loop0): max_inline at 0 [ 47.025325][ T4860] FAULT_INJECTION: forcing a failure. [ 47.025325][ T4860] name failslab, interval 1, probability 0, space 0, times 0 [ 47.027224][ T4860] CPU: 0 PID: 4860 Comm: syz-executor.0 Tainted: G W syzkaller #0 [ 47.028523][ T4860] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/02/2026 [ 47.029985][ T4860] Call trace: [ 47.030424][ T4860] dump_backtrace+0x0/0x458 [ 47.031070][ T4860] show_stack+0x2c/0x3c [ 47.031619][ T4860] __dump_stack+0x30/0x40 [ 47.032224][ T4860] dump_stack_lvl+0xf4/0x15c [ 47.032900][ T4860] dump_stack+0x1c/0x5c [ 47.033508][ T4860] should_fail+0x3c8/0x520 [ 47.034170][ T4860] __should_failslab+0xbc/0x10c [ 47.034825][ T4860] should_failslab+0x10/0x28 [ 47.035453][ T4860] slab_pre_alloc_hook+0x64/0xe8 [ 47.036134][ T4860] kmem_cache_alloc+0x94/0x3d8 [ 47.036845][ T4860] btrfs_add_delayed_tree_ref+0x194/0xda4 [ 47.037655][ T4860] btrfs_alloc_tree_block+0xb2c/0x10f0 [ 47.038330][ T4860] btrfs_force_cow_block+0x3ac/0x172c [ 47.039102][ T4860] btrfs_cow_block+0x2d4/0x674 [ 47.039784][ T4860] btrfs_search_slot+0xa10/0x1ec8 [ 47.040496][ T4860] btrfs_insert_empty_items+0x1e8/0x2b0 [ 47.041242][ T4860] btrfs_insert_inode_ref+0x150/0xa24 [ 47.041944][ T4860] btrfs_add_link+0x244/0xac8 [ 47.042610][ T4860] btrfs_link+0x3a4/0x67c [ 47.043189][ T4860] vfs_link+0x5b4/0x748 [ 47.043739][ T4860] do_linkat+0x248/0x754 [ 47.044307][ T4860] __arm64_sys_linkat+0xec/0x108 [ 47.044949][ T4860] invoke_syscall+0x98/0x28c [ 47.045601][ T4860] el0_svc_common+0x13c/0x258 [ 47.046255][ T4860] do_el0_svc+0x5c/0x140 [ 47.046879][ T4860] el0_svc+0x78/0x1d0 [ 47.047415][ T4860] el0t_64_sync_handler+0xcc/0xe4 [ 47.048115][ T4860] el0t_64_sync+0x1a0/0x1a4 [ 47.080131][ T4255] ------------[ cut here ]------------ [ 47.080984][ T4255] WARNING: CPU: 1 PID: 4255 at fs/btrfs/space-info.h:110 btrfs_space_info_update_bytes_may_use+0x2b8/0x664 [ 47.082992][ T4255] Modules linked in: [ 47.083544][ T4255] CPU: 1 PID: 4255 Comm: syz-executor.0 Tainted: G W syzkaller #0 [ 47.084827][ T4255] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/02/2026 [ 47.086244][ T4255] pstate: 82400005 (Nzcv daif +PAN -UAO +TCO -DIT -SSBS BTYPE=--) [ 47.087349][ T4255] pc : btrfs_space_info_update_bytes_may_use+0x2b8/0x664 [ 47.088272][ T4255] lr : btrfs_space_info_update_bytes_may_use+0x2b4/0x664 [ 47.089158][ T4255] sp : ffff80001f2d7740 [ 47.089686][ T4255] x29: ffff80001f2d7750 x28: 0000000000000000 x27: 1fffe0001b058f0c [ 47.090826][ T4255] x26: dfff800000000000 x25: ffff80001438d110 x24: 0000000000000002 [ 47.092052][ T4255] x23: 0000000000000005 x22: 00000000000d0000 x21: 00000000000cf000 [ 47.093180][ T4255] x20: ffff0000d82c7860 x19: 0000000000000000 x18: 0000000000000000 [ 47.094291][ T4255] x17: 0000000000000000 x16: ffff80001134e478 x15: 0000000000000000 [ 47.095432][ T4255] x14: ffff700003e5aedc x13: 1ffff00003e5aedc x12: 0000000000000004 [ 47.096555][ T4255] x11: ff8080000a08c7a4 x10: 0000000000000000 x9 : ffff80000a08c7a4 [ 47.097636][ T4255] x8 : ffff0000ced51b40 x7 : ffff80000a08ba74 x6 : 0000000000000000 [ 47.098710][ T4255] x5 : 0000000000000000 x4 : 0000000000000001 x3 : ffff8000082db960 [ 47.099900][ T4255] x2 : fffffffffff30000 x1 : 00000000000d0000 x0 : 00000000000cf000 [ 47.101053][ T4255] Call trace: [ 47.101534][ T4255] btrfs_space_info_update_bytes_may_use+0x2b8/0x664 [ 47.102406][ T4255] btrfs_block_rsv_release+0x3bc/0x498 [ 47.103099][ T4255] btrfs_release_global_block_rsv+0x38/0x22c [ 47.103873][ T4255] btrfs_free_block_groups+0x7b8/0xb20 [ 47.104715][ T4255] close_ctree+0x62c/0x848 [ 47.105355][ T4255] btrfs_put_super+0x40/0x50 [ 47.106001][ T4255] generic_shutdown_super+0x138/0x2f8 [ 47.106715][ T4255] kill_anon_super+0x4c/0x80 [ 47.107320][ T4255] btrfs_kill_super+0x44/0x5c [ 47.107992][ T4255] deactivate_locked_super+0xc0/0x13c [ 47.108690][ T4255] deactivate_super+0xf0/0x110 [ 47.109331][ T4255] cleanup_mnt+0x3bc/0x470 [ 47.109932][ T4255] __cleanup_mnt+0x20/0x30 [ 47.110614][ T4255] task_work_run+0x13c/0x1e8 [ 47.111228][ T4255] do_notify_resume+0x2488/0x30a8 [ 47.111909][ T4255] el0_svc+0xf0/0x1d0 [ 47.112528][ T4255] el0t_64_sync_handler+0xcc/0xe4 [ 47.113277][ T4255] el0t_64_sync+0x1a0/0x1a4 [ 47.113904][ T4255] irq event stamp: 640686 [ 47.114550][ T4255] hardirqs last enabled at (640685): [] kasan_quarantine_put+0xc4/0x200 [ 47.115953][ T4255] hardirqs last disabled at (640686): [] el1_dbg+0x24/0x80 [ 47.117218][ T4255] softirqs last enabled at (637098): [] local_bh_enable+0x10/0x34 [ 47.118502][ T4255] softirqs last disabled at (637096): [] local_bh_disable+0x10/0x34 [ 47.119799][ T4255] ---[ end trace 89e47276819b71cd ]--- [ 47.139786][ T4077] Bluetooth: hci0: command 0x040f tx timeout [ 47.280352][ T4881] BTRFS: device fsid 24c7a497-3402-47dd-bef8-82358f5f30e0 devid 1 transid 8 /dev/loop0 scanned by syz-executor.0 (4881) [ 47.307823][ T4881] FAULT_INJECTION: forcing a failure. [ 47.307823][ T4881] name failslab, interval 1, probability 0, space 0, times 0 [ 47.310510][ T4881] CPU: 0 PID: 4881 Comm: syz-executor.0 Tainted: G W syzkaller #0 [ 47.311744][ T4881] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/02/2026 [ 47.313189][ T4881] Call trace: [ 47.313622][ T4881] dump_backtrace+0x0/0x458 [ 47.314286][ T4881] show_stack+0x2c/0x3c [ 47.314901][ T4881] __dump_stack+0x30/0x40 [ 47.315537][ T4881] dump_stack_lvl+0xf4/0x15c [ 47.316319][ T4881] dump_stack+0x1c/0x5c [ 47.317004][ T4881] should_fail+0x3c8/0x520 [ 47.317719][ T4881] __should_failslab+0xbc/0x10c [ 47.318426][ T4881] should_failslab+0x10/0x28 [ 47.319102][ T4881] slab_pre_alloc_hook+0x64/0xe8 [ 47.319762][ T4881] kmem_cache_alloc+0x94/0x3d8 [ 47.320482][ T4881] btrfs_alloc_tree_block+0x9dc/0x10f0 [ 47.321292][ T4881] btrfs_force_cow_block+0x3ac/0x172c [ 47.321997][ T4881] btrfs_cow_block+0x2d4/0x674 [ 47.322692][ T4881] btrfs_search_slot+0xa10/0x1ec8 [ 47.323415][ T4881] btrfs_insert_empty_items+0x1e8/0x2b0 [ 47.324211][ T4881] btrfs_insert_inode_ref+0x150/0xa24 [ 47.325035][ T4881] btrfs_add_link+0x244/0xac8 [ 47.325693][ T4881] btrfs_link+0x3a4/0x67c [ 47.326329][ T4881] vfs_link+0x5b4/0x748 [ 47.326946][ T4881] do_linkat+0x248/0x754 [ 47.327530][ T4881] __arm64_sys_linkat+0xec/0x108 [ 47.328247][ T4881] invoke_syscall+0x98/0x28c [ 47.328917][ T4881] el0_svc_common+0x13c/0x258 [ 47.329582][ T4881] do_el0_svc+0x5c/0x140 [ 47.330139][ T4881] el0_svc+0x78/0x1d0 [ 47.330707][ T4881] el0t_64_sync_handler+0xcc/0xe4 [ 47.331451][ T4881] el0t_64_sync+0x1a0/0x1a4 [ 47.364896][ T4255] ------------[ cut here ]------------ [ 47.365746][ T4255] WARNING: CPU: 1 PID: 4255 at fs/btrfs/space-info.h:110 btrfs_space_info_update_bytes_may_use+0x2b8/0x664 [ 47.367242][ T4255] Modules linked in: [ 47.367707][ T4255] CPU: 1 PID: 4255 Comm: syz-executor.0 Tainted: G W syzkaller #0 [ 47.368928][ T4255] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/02/2026 [ 47.370302][ T4255] pstate: 82400005 (Nzcv daif +PAN -UAO +TCO -DIT -SSBS BTYPE=--) [ 47.371335][ T4255] pc : btrfs_space_info_update_bytes_may_use+0x2b8/0x664 [ 47.372289][ T4255] lr : btrfs_space_info_update_bytes_may_use+0x2b4/0x664 [ 47.373167][ T4255] sp : ffff80001f2d7740 [ 47.373707][ T4255] x29: ffff80001f2d7750 x28: 0000000000000000 x27: 1fffe000181c0e0c [ 47.374771][ T4255] x26: dfff800000000000 x25: ffff80001438d110 x24: 0000000000000002 [ 47.375843][ T4255] x23: 0000000000000005 x22: 00000000000d0000 x21: 00000000000cf000 [ 47.376923][ T4255] x20: ffff0000c0e07060 x19: 0000000000000000 x18: 0000000000000000 [ 47.378052][ T4255] x17: 0000000000000000 x16: ffff80001134e478 x15: 0000000000000000 [ 47.379125][ T4255] x14: ffff700003e5aedc x13: 1ffff00003e5aedc x12: 0000000000000004 [ 47.380221][ T4255] x11: ff8080000a08c7a4 x10: 0000000000000000 x9 : ffff80000a08c7a4 [ 47.381241][ T4255] x8 : ffff0000ced51b40 x7 : ffff80000a08ba74 x6 : 0000000000000000 [ 47.382279][ T4255] x5 : 0000000000000000 x4 : 0000000000000001 x3 : ffff8000082db960 [ 47.383388][ T4255] x2 : fffffffffff30000 x1 : 00000000000d0000 x0 : 00000000000cf000 [ 47.384495][ T4255] Call trace: [ 47.384962][ T4255] btrfs_space_info_update_bytes_may_use+0x2b8/0x664 [ 47.385873][ T4255] btrfs_block_rsv_release+0x3bc/0x498 [ 47.386607][ T4255] btrfs_release_global_block_rsv+0x38/0x22c [ 47.387479][ T4255] btrfs_free_block_groups+0x7b8/0xb20 [ 47.388328][ T4255] close_ctree+0x62c/0x848 [ 47.388979][ T4255] btrfs_put_super+0x40/0x50 [ 47.389588][ T4255] generic_shutdown_super+0x138/0x2f8 [ 47.390423][ T4255] kill_anon_super+0x4c/0x80 [ 47.391101][ T4255] btrfs_kill_super+0x44/0x5c [ 47.391706][ T4255] deactivate_locked_super+0xc0/0x13c [ 47.392541][ T4255] deactivate_super+0xf0/0x110 [ 47.393243][ T4255] cleanup_mnt+0x3bc/0x470 [ 47.393850][ T4255] __cleanup_mnt+0x20/0x30 [ 47.394525][ T4255] task_work_run+0x13c/0x1e8 [ 47.395182][ T4255] do_notify_resume+0x2488/0x30a8 [ 47.395903][ T4255] el0_svc+0xf0/0x1d0 [ 47.396489][ T4255] el0t_64_sync_handler+0xcc/0xe4 [ 47.397211][ T4255] el0t_64_sync+0x1a0/0x1a4 [ 47.397812][ T4255] irq event stamp: 670032 [ 47.398414][ T4255] hardirqs last enabled at (670031): [] kasan_quarantine_put+0xc4/0x200 [ 47.399824][ T4255] hardirqs last disabled at (670032): [] el1_dbg+0x24/0x80 [ 47.401264][ T4255] softirqs last enabled at (667042): [] handle_softirqs+0xa70/0xc14 [ 47.402604][ T4255] softirqs last disabled at (666813): [] __irq_exit_rcu+0x240/0x434 [ 47.403950][ T4255] ---[ end trace 89e47276819b71ce ]--- [ 47.566821][ T4902] set_capacity_and_notify: 8 callbacks suppressed [ 47.566830][ T4902] loop0: detected capacity change from 0 to 32768 [ 47.570960][ T4902] BTRFS: device fsid 24c7a497-3402-47dd-bef8-82358f5f30e0 devid 1 transid 8 /dev/loop0 scanned by syz-executor.0 (4902) [ 47.575996][ T4902] btrfs_printk: 8 callbacks suppressed [ 47.576002][ T4902] BTRFS info (device loop0): using crc32c (crc32c-generic) checksum algorithm [ 47.578159][ T4902] BTRFS info (device loop0): setting nodatasum [ 47.579161][ T4902] BTRFS info (device loop0): enabling ssd optimizations [ 47.580422][ T4902] BTRFS info (device loop0): max_inline at 0 [ 47.581370][ T4902] BTRFS info (device loop0): using free space tree [ 47.582440][ T4902] BTRFS info (device loop0): has skinny extents [ 47.596064][ T4902] FAULT_INJECTION: forcing a failure. [ 47.596064][ T4902] name failslab, interval 1, probability 0, space 0, times 0 [ 47.597984][ T4902] CPU: 1 PID: 4902 Comm: syz-executor.0 Tainted: G W syzkaller #0 [ 47.599254][ T4902] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/02/2026 [ 47.600567][ T4902] Call trace: [ 47.600980][ T4902] dump_backtrace+0x0/0x458 [ 47.601673][ T4902] show_stack+0x2c/0x3c [ 47.602256][ T4902] __dump_stack+0x30/0x40 [ 47.602828][ T4902] dump_stack_lvl+0xf4/0x15c [ 47.603492][ T4902] dump_stack+0x1c/0x5c [ 47.604083][ T4902] should_fail+0x3c8/0x520 [ 47.604693][ T4902] __should_failslab+0xbc/0x10c [ 47.605350][ T4902] should_failslab+0x10/0x28 [ 47.605984][ T4902] slab_pre_alloc_hook+0x64/0xe8 [ 47.606670][ T4902] kmem_cache_alloc+0x94/0x3d8 [ 47.607295][ T4902] btrfs_alloc_tree_block+0x9dc/0x10f0 [ 47.608037][ T4902] btrfs_force_cow_block+0x3ac/0x172c [ 47.608763][ T4902] btrfs_cow_block+0x2d4/0x674 [ 47.609397][ T4902] btrfs_search_slot+0xa10/0x1ec8 [ 47.610018][ T4902] btrfs_insert_empty_items+0x1e8/0x2b0 [ 47.610806][ T4902] btrfs_insert_inode_ref+0x150/0xa24 [ 47.611505][ T4902] btrfs_add_link+0x244/0xac8 [ 47.612135][ T4902] btrfs_link+0x3a4/0x67c [ 47.612751][ T4902] vfs_link+0x5b4/0x748 [ 47.613278][ T4902] do_linkat+0x248/0x754 [ 47.613876][ T4902] __arm64_sys_linkat+0xec/0x108 [ 47.614563][ T4902] invoke_syscall+0x98/0x28c [ 47.615164][ T4902] el0_svc_common+0x13c/0x258 [ 47.615781][ T4902] do_el0_svc+0x5c/0x140 [ 47.616357][ T4902] el0_svc+0x78/0x1d0 [ 47.616914][ T4902] el0t_64_sync_handler+0xcc/0xe4 [ 47.617567][ T4902] el0t_64_sync+0x1a0/0x1a4 [ 47.650590][ T4255] ------------[ cut here ]------------ [ 47.651347][ T4255] WARNING: CPU: 0 PID: 4255 at fs/btrfs/space-info.h:110 btrfs_space_info_update_bytes_may_use+0x2b8/0x664 [ 47.652760][ T4255] Modules linked in: [ 47.653281][ T4255] CPU: 0 PID: 4255 Comm: syz-executor.0 Tainted: G W syzkaller #0 [ 47.654550][ T4255] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/02/2026 [ 47.655918][ T4255] pstate: 82400005 (Nzcv daif +PAN -UAO +TCO -DIT -SSBS BTYPE=--) [ 47.656944][ T4255] pc : btrfs_space_info_update_bytes_may_use+0x2b8/0x664 [ 47.657840][ T4255] lr : btrfs_space_info_update_bytes_may_use+0x2b4/0x664 [ 47.658722][ T4255] sp : ffff80001f2d7740 [ 47.659259][ T4255] x29: ffff80001f2d7750 x28: 0000000000000000 x27: 1fffe0001afd970c [ 47.660322][ T4255] x26: dfff800000000000 x25: ffff80001438d110 x24: 0000000000000001 [ 47.661607][ T4255] x23: 0000000000000005 x22: 00000000000d0000 x21: 00000000000cf000 [ 47.662679][ T4255] x20: ffff0000d7ecb860 x19: 0000000000000000 x18: 0000000000000000 [ 47.663792][ T4255] x17: 0000000000000000 x16: ffff80001134e478 x15: 0000000000000000 [ 47.664873][ T4255] x14: ffff700003e5aedc x13: 1ffff00003e5aedc x12: 0000000000000004 [ 47.666003][ T4255] x11: ff8080000a08c7a4 x10: 0000000000000000 x9 : ffff80000a08c7a4 [ 47.667090][ T4255] x8 : ffff0000ced51b40 x7 : ffff80000a08ba74 x6 : 0000000000000000 [ 47.668154][ T4255] x5 : 0000000000000000 x4 : 0000000000000001 x3 : ffff8000082db960 [ 47.669203][ T4255] x2 : fffffffffff30000 x1 : 00000000000d0000 x0 : 00000000000cf000 [ 47.670311][ T4255] Call trace: [ 47.670825][ T4255] btrfs_space_info_update_bytes_may_use+0x2b8/0x664 [ 47.671753][ T4255] btrfs_block_rsv_release+0x3bc/0x498 [ 47.672558][ T4255] btrfs_release_global_block_rsv+0x38/0x22c [ 47.673376][ T4255] btrfs_free_block_groups+0x7b8/0xb20 [ 47.674174][ T4255] close_ctree+0x62c/0x848 [ 47.674797][ T4255] btrfs_put_super+0x40/0x50 [ 47.675403][ T4255] generic_shutdown_super+0x138/0x2f8 [ 47.676148][ T4255] kill_anon_super+0x4c/0x80 [ 47.676792][ T4255] btrfs_kill_super+0x44/0x5c [ 47.677468][ T4255] deactivate_locked_super+0xc0/0x13c [ 47.678187][ T4255] deactivate_super+0xf0/0x110 [ 47.678814][ T4255] cleanup_mnt+0x3bc/0x470 [ 47.679442][ T4255] __cleanup_mnt+0x20/0x30 [ 47.680053][ T4255] task_work_run+0x13c/0x1e8 [ 47.680645][ T4255] do_notify_resume+0x2488/0x30a8 [ 47.681344][ T4255] el0_svc+0xf0/0x1d0 [ 47.681972][ T4255] el0t_64_sync_handler+0xcc/0xe4 [ 47.682701][ T4255] el0t_64_sync+0x1a0/0x1a4 [ 47.683317][ T4255] irq event stamp: 699556 [ 47.683937][ T4255] hardirqs last enabled at (699555): [] kasan_quarantine_put+0xc4/0x200 [ 47.685241][ T4255] hardirqs last disabled at (699556): [] el1_dbg+0x24/0x80 [ 47.686402][ T4255] softirqs last enabled at (698442): [] handle_softirqs+0xa70/0xc14 [ 47.687797][ T4255] softirqs last disabled at (698379): [] __irq_exit_rcu+0x240/0x434 [ 47.689096][ T4255] ---[ end trace 89e47276819b71cf ]--- [ 47.845963][ T4923] loop0: detected capacity change from 0 to 32768 [ 47.848407][ T4923] BTRFS: device fsid 24c7a497-3402-47dd-bef8-82358f5f30e0 devid 1 transid 8 /dev/loop0 scanned by syz-executor.0 (4923) [ 47.851287][ T4923] BTRFS info (device loop0): using crc32c (crc32c-generic) checksum algorithm [ 47.853299][ T4923] BTRFS info (device loop0): setting nodatasum [ 47.854108][ T4923] BTRFS info (device loop0): enabling ssd optimizations [ 47.855135][ T4923] BTRFS info (device loop0): max_inline at 0 [ 47.855960][ T4923] BTRFS info (device loop0): using free space tree [ 47.856886][ T4923] BTRFS info (device loop0): has skinny extents [ 47.868459][ T4923] FAULT_INJECTION: forcing a failure. [ 47.868459][ T4923] name failslab, interval 1, probability 0, space 0, times 0 [ 47.872076][ T4923] CPU: 0 PID: 4923 Comm: syz-executor.0 Tainted: G W syzkaller #0 [ 47.873332][ T4923] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/02/2026 [ 47.874581][ T4923] Call trace: [ 47.874997][ T4923] dump_backtrace+0x0/0x458 [ 47.875611][ T4923] show_stack+0x2c/0x3c [ 47.876172][ T4923] __dump_stack+0x30/0x40 [ 47.876747][ T4923] dump_stack_lvl+0xf4/0x15c [ 47.877392][ T4923] dump_stack+0x1c/0x5c [ 47.877977][ T4923] should_fail+0x3c8/0x520 [ 47.878551][ T4923] __should_failslab+0xbc/0x10c [ 47.879172][ T4923] should_failslab+0x10/0x28 [ 47.879786][ T4923] slab_pre_alloc_hook+0x64/0xe8 [ 47.880457][ T4923] kmem_cache_alloc+0x94/0x3d8 [ 47.881053][ T4923] btrfs_add_delayed_tree_ref+0x1b0/0xda4 [ 47.881787][ T4923] btrfs_alloc_tree_block+0xb2c/0x10f0 [ 47.882512][ T4923] btrfs_force_cow_block+0x3ac/0x172c [ 47.883291][ T4923] btrfs_cow_block+0x2d4/0x674 [ 47.883940][ T4923] btrfs_search_slot+0xa10/0x1ec8 [ 47.884637][ T4923] btrfs_insert_empty_items+0x1e8/0x2b0 [ 47.885410][ T4923] btrfs_insert_inode_ref+0x150/0xa24 [ 47.886176][ T4923] btrfs_add_link+0x244/0xac8 [ 47.886815][ T4923] btrfs_link+0x3a4/0x67c [ 47.887383][ T4923] vfs_link+0x5b4/0x748 [ 47.887929][ T4923] do_linkat+0x248/0x754 [ 47.888508][ T4923] __arm64_sys_linkat+0xec/0x108 [ 47.889145][ T4923] invoke_syscall+0x98/0x28c [ 47.889743][ T4923] el0_svc_common+0x13c/0x258 [ 47.890350][ T4923] do_el0_svc+0x5c/0x140 [ 47.890872][ T4923] el0_svc+0x78/0x1d0 [ 47.891396][ T4923] el0t_64_sync_handler+0xcc/0xe4 [ 47.892110][ T4923] el0t_64_sync+0x1a0/0x1a4 [ 47.925434][ T4255] ------------[ cut here ]------------ [ 47.926296][ T4255] WARNING: CPU: 1 PID: 4255 at fs/btrfs/space-info.h:110 btrfs_space_info_update_bytes_may_use+0x2b8/0x664 [ 47.928074][ T4255] Modules linked in: [ 47.928688][ T4255] CPU: 1 PID: 4255 Comm: syz-executor.0 Tainted: G W syzkaller #0 [ 47.930080][ T4255] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/02/2026 [ 47.931507][ T4255] pstate: 82400005 (Nzcv daif +PAN -UAO +TCO -DIT -SSBS BTYPE=--) [ 47.932566][ T4255] pc : btrfs_space_info_update_bytes_may_use+0x2b8/0x664 [ 47.933577][ T4255] lr : btrfs_space_info_update_bytes_may_use+0x2b4/0x664 [ 47.934646][ T4255] sp : ffff80001f2d7740 [ 47.935280][ T4255] x29: ffff80001f2d7750 x28: 0000000000000000 x27: 1fffe0001b82530c [ 47.936472][ T4255] x26: dfff800000000000 x25: ffff80001438d110 x24: 0000000000000002 [ 47.937672][ T4255] x23: 0000000000000005 x22: 00000000000d0000 x21: 00000000000cf000 [ 47.938855][ T4255] x20: ffff0000dc129860 x19: 0000000000000000 x18: 0000000000000000 [ 47.940115][ T4255] x17: 0000000000000000 x16: ffff80001134e478 x15: 0000000000000000 [ 47.941337][ T4255] x14: ffff700003e5aedc x13: 1ffff00003e5aedc x12: 0000000000000004 [ 47.942591][ T4255] x11: ff8080000a08c7a4 x10: 0000000000000000 x9 : ffff80000a08c7a4 [ 47.943754][ T4255] x8 : ffff0000ced51b40 x7 : ffff80000a08ba74 x6 : 0000000000000000 [ 47.944867][ T4255] x5 : 0000000000000000 x4 : 0000000000000001 x3 : ffff8000082db960 [ 47.946005][ T4255] x2 : fffffffffff30000 x1 : 00000000000d0000 x0 : 00000000000cf000 [ 47.947131][ T4255] Call trace: [ 47.947552][ T4255] btrfs_space_info_update_bytes_may_use+0x2b8/0x664 [ 47.948465][ T4255] btrfs_block_rsv_release+0x3bc/0x498 [ 47.949188][ T4255] btrfs_release_global_block_rsv+0x38/0x22c [ 47.950050][ T4255] btrfs_free_block_groups+0x7b8/0xb20 [ 47.950843][ T4255] close_ctree+0x62c/0x848 [ 47.951448][ T4255] btrfs_put_super+0x40/0x50 [ 47.952066][ T4255] generic_shutdown_super+0x138/0x2f8 [ 47.952809][ T4255] kill_anon_super+0x4c/0x80 [ 47.953417][ T4255] btrfs_kill_super+0x44/0x5c [ 47.954078][ T4255] deactivate_locked_super+0xc0/0x13c [ 47.954940][ T4255] deactivate_super+0xf0/0x110 [ 47.955643][ T4255] cleanup_mnt+0x3bc/0x470 [ 47.956299][ T4255] __cleanup_mnt+0x20/0x30 [ 47.957057][ T4255] task_work_run+0x13c/0x1e8 [ 47.957833][ T4255] do_notify_resume+0x2488/0x30a8 [ 47.958649][ T4255] el0_svc+0xf0/0x1d0 [ 47.959221][ T4255] el0t_64_sync_handler+0xcc/0xe4 [ 47.959925][ T4255] el0t_64_sync+0x1a0/0x1a4 [ 47.960536][ T4255] irq event stamp: 729224 [ 47.961132][ T4255] hardirqs last enabled at (729223): [] kasan_quarantine_put+0xc4/0x200 [ 47.962456][ T4255] hardirqs last disabled at (729224): [] el1_dbg+0x24/0x80 [ 47.963620][ T4255] softirqs last enabled at (726296): [] handle_softirqs+0xa70/0xc14 [ 47.964891][ T4255] softirqs last disabled at (726145): [] __irq_exit_rcu+0x240/0x434 [ 47.966352][ T4255] ---[ end trace 89e47276819b71d0 ]--- [ 48.134243][ T4944] loop0: detected capacity change from 0 to 32768 [ 48.139046][ T4944] BTRFS: device fsid 24c7a497-3402-47dd-bef8-82358f5f30e0 devid 1 transid 8 /dev/loop0 scanned by syz-executor.0 (4944) [ 48.143945][ T4944] BTRFS info (device loop0): using crc32c (crc32c-generic) checksum algorithm [ 48.145303][ T4944] BTRFS info (device loop0): setting nodatasum [ 48.146196][ T4944] BTRFS info (device loop0): enabling ssd optimizations [ 48.147325][ T4944] BTRFS info (device loop0): max_inline at 0 [ 48.148130][ T4944] BTRFS info (device loop0): using free space tree [ 48.149163][ T4944] BTRFS info (device loop0): has skinny extents [ 48.160908][ T4944] FAULT_INJECTION: forcing a failure. [ 48.160908][ T4944] name failslab, interval 1, probability 0, space 0, times 0 [ 48.162883][ T4944] CPU: 1 PID: 4944 Comm: syz-executor.0 Tainted: G W syzkaller #0 [ 48.164202][ T4944] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/02/2026 [ 48.165683][ T4944] Call trace: [ 48.166169][ T4944] dump_backtrace+0x0/0x458 [ 48.166822][ T4944] show_stack+0x2c/0x3c [ 48.167423][ T4944] __dump_stack+0x30/0x40 [ 48.168046][ T4944] dump_stack_lvl+0xf4/0x15c [ 48.168745][ T4944] dump_stack+0x1c/0x5c [ 48.169321][ T4944] should_fail+0x3c8/0x520 [ 48.169941][ T4944] __should_failslab+0xbc/0x10c [ 48.170680][ T4944] should_failslab+0x10/0x28 [ 48.171350][ T4944] slab_pre_alloc_hook+0x64/0xe8 [ 48.172096][ T4944] kmem_cache_alloc+0x94/0x3d8 [ 48.172778][ T4944] btrfs_add_delayed_tree_ref+0x1b0/0xda4 [ 48.173539][ T4944] btrfs_alloc_tree_block+0xb2c/0x10f0 [ 48.174293][ T4944] btrfs_force_cow_block+0x3ac/0x172c [ 48.175078][ T4944] btrfs_cow_block+0x2d4/0x674 [ 48.175710][ T4944] btrfs_search_slot+0xa10/0x1ec8 [ 48.176425][ T4944] btrfs_insert_empty_items+0x1e8/0x2b0 [ 48.177220][ T4944] btrfs_insert_inode_ref+0x150/0xa24 [ 48.177994][ T4944] btrfs_add_link+0x244/0xac8 [ 48.178616][ T4944] btrfs_link+0x3a4/0x67c [ 48.179196][ T4944] vfs_link+0x5b4/0x748 [ 48.179800][ T4944] do_linkat+0x248/0x754 [ 48.180402][ T4944] __arm64_sys_linkat+0xec/0x108 [ 48.181084][ T4944] invoke_syscall+0x98/0x28c [ 48.181757][ T4944] el0_svc_common+0x13c/0x258 [ 48.182446][ T4944] do_el0_svc+0x5c/0x140 [ 48.183069][ T4944] el0_svc+0x78/0x1d0 [ 48.183654][ T4944] el0t_64_sync_handler+0xcc/0xe4 [ 48.184361][ T4944] el0t_64_sync+0x1a0/0x1a4 [ 48.217633][ T4255] ------------[ cut here ]------------ [ 48.218380][ T4255] WARNING: CPU: 0 PID: 4255 at fs/btrfs/space-info.h:110 btrfs_space_info_update_bytes_may_use+0x2b8/0x664 [ 48.220039][ T4255] Modules linked in: [ 48.220590][ T4255] CPU: 0 PID: 4255 Comm: syz-executor.0 Tainted: G W syzkaller #0 [ 48.221784][ T4255] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/02/2026 [ 48.223197][ T4255] pstate: 82400005 (Nzcv daif +PAN -UAO +TCO -DIT -SSBS BTYPE=--) [ 48.224286][ T4255] pc : btrfs_space_info_update_bytes_may_use+0x2b8/0x664 [ 48.225263][ T4255] lr : btrfs_space_info_update_bytes_may_use+0x2b4/0x664 [ 48.226237][ T4255] sp : ffff80001f2d7740 [ 48.226774][ T4255] x29: ffff80001f2d7750 x28: 0000000000000000 x27: 1fffe0001978a20c [ 48.227910][ T4255] x26: dfff800000000000 x25: ffff80001438d110 x24: 0000000000000001 [ 48.228964][ T4255] x23: 0000000000000005 x22: 00000000000d0000 x21: 00000000000cf000 [ 48.229990][ T4255] x20: ffff0000cbc51060 x19: 0000000000000000 x18: 0000000000000000 [ 48.231140][ T4255] x17: 0000000000000000 x16: ffff80001134e478 x15: 0000000000000000 [ 48.232111][ T4255] x14: ffff700003e5aedc x13: 1ffff00003e5aedc x12: 0000000000000004 [ 48.233149][ T4255] x11: ff8080000a08c7a4 x10: 0000000000000000 x9 : ffff80000a08c7a4 [ 48.234279][ T4255] x8 : ffff0000ced51b40 x7 : ffff80000a08ba74 x6 : 0000000000000000 [ 48.235377][ T4255] x5 : 0000000000000000 x4 : 0000000000000001 x3 : ffff8000082db960 [ 48.236415][ T4255] x2 : fffffffffff30000 x1 : 00000000000d0000 x0 : 00000000000cf000 [ 48.237438][ T4255] Call trace: [ 48.237852][ T4255] btrfs_space_info_update_bytes_may_use+0x2b8/0x664 [ 48.238823][ T4255] btrfs_block_rsv_release+0x3bc/0x498 [ 48.239589][ T4255] btrfs_release_global_block_rsv+0x38/0x22c [ 48.240397][ T4255] btrfs_free_block_groups+0x7b8/0xb20 [ 48.241107][ T4255] close_ctree+0x62c/0x848 [ 48.241752][ T4255] btrfs_put_super+0x40/0x50 [ 48.242350][ T4255] generic_shutdown_super+0x138/0x2f8 [ 48.243138][ T4255] kill_anon_super+0x4c/0x80 [ 48.243794][ T4255] btrfs_kill_super+0x44/0x5c [ 48.244452][ T4255] deactivate_locked_super+0xc0/0x13c [ 48.245136][ T4255] deactivate_super+0xf0/0x110 [ 48.245763][ T4255] cleanup_mnt+0x3bc/0x470 [ 48.246411][ T4255] __cleanup_mnt+0x20/0x30 [ 48.247085][ T4255] task_work_run+0x13c/0x1e8 [ 48.247723][ T4255] do_notify_resume+0x2488/0x30a8 [ 48.248466][ T4255] el0_svc+0xf0/0x1d0 [ 48.248973][ T4255] el0t_64_sync_handler+0xcc/0xe4 [ 48.249636][ T4255] el0t_64_sync+0x1a0/0x1a4 [ 48.250235][ T4255] irq event stamp: 759348 [ 48.250896][ T4255] hardirqs last enabled at (759347): [] kasan_quarantine_put+0xc4/0x200 [ 48.252255][ T4255] hardirqs last disabled at (759348): [] el1_dbg+0x24/0x80 [ 48.253442][ T4255] softirqs last enabled at (756072): [] local_bh_enable+0x10/0x34 [ 48.254827][ T4255] softirqs last disabled at (756070): [] local_bh_disable+0x10/0x34 [ 48.256086][ T4255] ---[ end trace 89e47276819b71d1 ]--- [ 48.395437][ T4965] loop0: detected capacity change from 0 to 32768 [ 48.397930][ T4965] BTRFS: device fsid 24c7a497-3402-47dd-bef8-82358f5f30e0 devid 1 transid 8 /dev/loop0 scanned by syz-executor.0 (4965) [ 48.407514][ T4965] BTRFS info (device loop0): using crc32c (crc32c-generic) checksum algorithm [ 48.408913][ T4965] BTRFS info (device loop0): setting nodatasum [ 48.410263][ T4965] BTRFS info (device loop0): enabling ssd optimizations [ 48.411625][ T4965] BTRFS info (device loop0): max_inline at 0 [ 48.413064][ T4965] BTRFS info (device loop0): using free space tree [ 48.414032][ T4965] BTRFS info (device loop0): has skinny extents [ 48.434241][ T4965] FAULT_INJECTION: forcing a failure. [ 48.434241][ T4965] name failslab, interval 1, probability 0, space 0, times 0 [ 48.436083][ T4965] CPU: 1 PID: 4965 Comm: syz-executor.0 Tainted: G W syzkaller #0 [ 48.437376][ T4965] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/02/2026 [ 48.438847][ T4965] Call trace: [ 48.439316][ T4965] dump_backtrace+0x0/0x458 [ 48.439993][ T4965] show_stack+0x2c/0x3c [ 48.440610][ T4965] __dump_stack+0x30/0x40 [ 48.441276][ T4965] dump_stack_lvl+0xf4/0x15c [ 48.441969][ T4965] dump_stack+0x1c/0x5c [ 48.442576][ T4965] should_fail+0x3c8/0x520 [ 48.443283][ T4965] __should_failslab+0xbc/0x10c [ 48.444016][ T4965] should_failslab+0x10/0x28 [ 48.444748][ T4965] slab_pre_alloc_hook+0x64/0xe8 [ 48.445456][ T4965] kmem_cache_alloc+0x94/0x3d8 [ 48.446138][ T4965] btrfs_add_delayed_tree_ref+0x194/0xda4 [ 48.446929][ T4965] btrfs_alloc_tree_block+0xb2c/0x10f0 [ 48.447705][ T4965] btrfs_force_cow_block+0x3ac/0x172c [ 48.448449][ T4965] btrfs_cow_block+0x2d4/0x674 [ 48.449117][ T4965] btrfs_search_slot+0xa10/0x1ec8 [ 48.449846][ T4965] btrfs_insert_empty_items+0x1e8/0x2b0 [ 48.450668][ T4965] btrfs_insert_inode_ref+0x150/0xa24 [ 48.451449][ T4965] btrfs_add_link+0x244/0xac8 [ 48.452107][ T4965] btrfs_link+0x3a4/0x67c [ 48.452766][ T4965] vfs_link+0x5b4/0x748 [ 48.453328][ T4965] do_linkat+0x248/0x754 [ 48.453906][ T4965] __arm64_sys_linkat+0xec/0x108 [ 48.454612][ T4965] invoke_syscall+0x98/0x28c [ 48.455242][ T4965] el0_svc_common+0x13c/0x258 [ 48.455977][ T4965] do_el0_svc+0x5c/0x140 [ 48.456571][ T4965] el0_svc+0x78/0x1d0 [ 48.457137][ T4965] el0t_64_sync_handler+0xcc/0xe4 [ 48.457783][ T4965] el0t_64_sync+0x1a0/0x1a4 [ 48.490171][ T4255] ------------[ cut here ]------------ [ 48.491052][ T4255] WARNING: CPU: 1 PID: 4255 at fs/btrfs/space-info.h:110 btrfs_space_info_update_bytes_may_use+0x2b8/0x664 [ 48.492658][ T4255] Modules linked in: [ 48.493208][ T4255] CPU: 1 PID: 4255 Comm: syz-executor.0 Tainted: G W syzkaller #0 [ 48.494420][ T4255] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/02/2026 [ 48.495785][ T4255] pstate: 82400005 (Nzcv daif +PAN -UAO +TCO -DIT -SSBS BTYPE=--) [ 48.496968][ T4255] pc : btrfs_space_info_update_bytes_may_use+0x2b8/0x664 [ 48.497929][ T4255] lr : btrfs_space_info_update_bytes_may_use+0x2b4/0x664 [ 48.498772][ T4255] sp : ffff80001f2d7740 [ 48.499415][ T4255] x29: ffff80001f2d7750 x28: 0000000000000000 x27: 1fffe0001aa49e0c [ 48.500528][ T4255] x26: dfff800000000000 x25: ffff80001438d110 x24: 0000000000000002 [ 48.501697][ T4255] x23: 0000000000000005 x22: 00000000000d0000 x21: 00000000000cf000 [ 48.502828][ T4255] x20: ffff0000d524f060 x19: 0000000000000000 x18: 0000000000000000 [ 48.503921][ T4255] x17: 0000000000000000 x16: ffff80001134e478 x15: 0000000000000000 [ 48.504927][ T4255] x14: ffff700003e5aedc x13: 1ffff00003e5aedc x12: 0000000000000004 [ 48.505969][ T4255] x11: ff8080000a08c7a4 x10: 0000000000000000 x9 : ffff80000a08c7a4 [ 48.507068][ T4255] x8 : ffff0000ced51b40 x7 : ffff80000a08ba74 x6 : 0000000000000000 [ 48.508211][ T4255] x5 : 0000000000000000 x4 : 0000000000000001 x3 : ffff8000082db960 [ 48.509350][ T4255] x2 : fffffffffff30000 x1 : 00000000000d0000 x0 : 00000000000cf000 [ 48.510335][ T4255] Call trace: [ 48.510768][ T4255] btrfs_space_info_update_bytes_may_use+0x2b8/0x664 [ 48.511699][ T4255] btrfs_block_rsv_release+0x3bc/0x498 [ 48.512398][ T4255] btrfs_release_global_block_rsv+0x38/0x22c [ 48.513303][ T4255] btrfs_free_block_groups+0x7b8/0xb20 [ 48.514010][ T4255] close_ctree+0x62c/0x848 [ 48.514617][ T4255] btrfs_put_super+0x40/0x50 [ 48.515222][ T4255] generic_shutdown_super+0x138/0x2f8 [ 48.515976][ T4255] kill_anon_super+0x4c/0x80 [ 48.516649][ T4255] btrfs_kill_super+0x44/0x5c [ 48.517319][ T4255] deactivate_locked_super+0xc0/0x13c [ 48.518017][ T4255] deactivate_super+0xf0/0x110 [ 48.518608][ T4255] cleanup_mnt+0x3bc/0x470 [ 48.519159][ T4255] __cleanup_mnt+0x20/0x30 [ 48.519754][ T4255] task_work_run+0x13c/0x1e8 [ 48.520350][ T4255] do_notify_resume+0x2488/0x30a8 [ 48.520995][ T4255] el0_svc+0xf0/0x1d0 [ 48.521490][ T4255] el0t_64_sync_handler+0xcc/0xe4 [ 48.522159][ T4255] el0t_64_sync+0x1a0/0x1a4 [ 48.522768][ T4255] irq event stamp: 789132 [ 48.523373][ T4255] hardirqs last enabled at (789131): [] kasan_quarantine_put+0xc4/0x200 [ 48.524863][ T4255] hardirqs last disabled at (789132): [] el1_dbg+0x24/0x80 [ 48.526071][ T4255] softirqs last enabled at (788204): [] handle_softirqs+0xa70/0xc14 [ 48.527436][ T4255] softirqs last disabled at (788165): [] __irq_exit_rcu+0x240/0x434 [ 48.528757][ T4255] ---[ end trace 89e47276819b71d2 ]--- [ 48.683081][ T4986] loop0: detected capacity change from 0 to 32768 [ 48.685706][ T4986] BTRFS: device fsid 24c7a497-3402-47dd-bef8-82358f5f30e0 devid 1 transid 8 /dev/loop0 scanned by syz-executor.0 (4986) [ 48.690392][ T4986] BTRFS info (device loop0): using crc32c (crc32c-generic) checksum algorithm [ 48.691728][ T4986] BTRFS info (device loop0): setting nodatasum [ 48.692570][ T4986] BTRFS info (device loop0): enabling ssd optimizations [ 48.693663][ T4986] BTRFS info (device loop0): max_inline at 0 [ 48.694519][ T4986] BTRFS info (device loop0): using free space tree [ 48.695514][ T4986] BTRFS info (device loop0): has skinny extents [ 48.712992][ T4986] FAULT_INJECTION: forcing a failure. [ 48.712992][ T4986] name failslab, interval 1, probability 0, space 0, times 0 [ 48.714998][ T4986] CPU: 1 PID: 4986 Comm: syz-executor.0 Tainted: G W syzkaller #0 [ 48.716273][ T4986] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/02/2026 [ 48.717533][ T4986] Call trace: [ 48.717951][ T4986] dump_backtrace+0x0/0x458 [ 48.718518][ T4986] show_stack+0x2c/0x3c [ 48.719141][ T4986] __dump_stack+0x30/0x40 [ 48.719751][ T4986] dump_stack_lvl+0xf4/0x15c [ 48.720389][ T4986] dump_stack+0x1c/0x5c [ 48.721044][ T4986] should_fail+0x3c8/0x520 [ 48.721703][ T4986] __should_failslab+0xbc/0x10c [ 48.722362][ T4986] should_failslab+0x10/0x28 [ 48.722962][ T4986] slab_pre_alloc_hook+0x64/0xe8 [ 48.723627][ T4986] kmem_cache_alloc+0x94/0x3d8 [ 48.724248][ T4986] btrfs_add_delayed_tree_ref+0x1b0/0xda4 [ 48.725083][ T4986] btrfs_alloc_tree_block+0xb2c/0x10f0 [ 48.725832][ T4986] btrfs_force_cow_block+0x3ac/0x172c [ 48.726577][ T4986] btrfs_cow_block+0x2d4/0x674 [ 48.727194][ T4986] btrfs_search_slot+0xa10/0x1ec8 [ 48.727866][ T4986] btrfs_insert_empty_items+0x1e8/0x2b0 [ 48.728580][ T4986] btrfs_insert_inode_ref+0x150/0xa24 [ 48.729335][ T4986] btrfs_add_link+0x244/0xac8 [ 48.730021][ T4986] btrfs_link+0x3a4/0x67c [ 48.730670][ T4986] vfs_link+0x5b4/0x748 [ 48.731219][ T4986] do_linkat+0x248/0x754 [ 48.731838][ T4986] __arm64_sys_linkat+0xec/0x108 [ 48.732497][ T4986] invoke_syscall+0x98/0x28c [ 48.733115][ T4986] el0_svc_common+0x13c/0x258 [ 48.733732][ T4986] do_el0_svc+0x5c/0x140 [ 48.734279][ T4986] el0_svc+0x78/0x1d0 [ 48.734785][ T4986] el0t_64_sync_handler+0xcc/0xe4 [ 48.735536][ T4986] el0t_64_sync+0x1a0/0x1a4 [ 48.767681][ T4255] ------------[ cut here ]------------ [ 48.768469][ T4255] WARNING: CPU: 0 PID: 4255 at fs/btrfs/space-info.h:110 btrfs_space_info_update_bytes_may_use+0x2b8/0x664 [ 48.770011][ T4255] Modules linked in: [ 48.770567][ T4255] CPU: 0 PID: 4255 Comm: syz-executor.0 Tainted: G W syzkaller #0 [ 48.771932][ T4255] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/02/2026 [ 48.773482][ T4255] pstate: 82400005 (Nzcv daif +PAN -UAO +TCO -DIT -SSBS BTYPE=--) [ 48.774657][ T4255] pc : btrfs_space_info_update_bytes_may_use+0x2b8/0x664 [ 48.775682][ T4255] lr : btrfs_space_info_update_bytes_may_use+0x2b4/0x664 [ 48.776668][ T4255] sp : ffff80001f2d7740 [ 48.777187][ T4255] x29: ffff80001f2d7750 x28: 0000000000000000 x27: 1fffe0001ae5090c [ 48.778338][ T4255] x26: dfff800000000000 x25: ffff80001438d110 x24: 0000000000000001 [ 48.779525][ T4255] x23: 0000000000000005 x22: 00000000000d0000 x21: 00000000000cf000 [ 48.780643][ T4255] x20: ffff0000d7284860 x19: 0000000000000000 x18: 0000000000000000 [ 48.781783][ T4255] x17: 0000000000000000 x16: ffff80001134e478 x15: 0000000000000000 [ 48.782843][ T4255] x14: ffff700003e5aedc x13: 1ffff00003e5aedc x12: 0000000000000004 [ 48.783982][ T4255] x11: ff8080000a08c7a4 x10: 0000000000000000 x9 : ffff80000a08c7a4 [ 48.785164][ T4255] x8 : ffff0000ced51b40 x7 : ffff80000a08ba74 x6 : 0000000000000000 [ 48.786383][ T4255] x5 : 0000000000000000 x4 : 0000000000000001 x3 : ffff8000082db960 [ 48.787517][ T4255] x2 : fffffffffff30000 x1 : 00000000000d0000 x0 : 00000000000cf000 [ 48.788620][ T4255] Call trace: [ 48.789093][ T4255] btrfs_space_info_update_bytes_may_use+0x2b8/0x664 [ 48.790077][ T4255] btrfs_block_rsv_release+0x3bc/0x498 [ 48.790899][ T4255] btrfs_release_global_block_rsv+0x38/0x22c [ 48.791777][ T4255] btrfs_free_block_groups+0x7b8/0xb20 [ 48.792443][ T4255] close_ctree+0x62c/0x848 [ 48.793148][ T4255] btrfs_put_super+0x40/0x50 [ 48.793907][ T4255] generic_shutdown_super+0x138/0x2f8 [ 48.794817][ T4255] kill_anon_super+0x4c/0x80 [ 48.795587][ T4255] btrfs_kill_super+0x44/0x5c [ 48.796259][ T4255] deactivate_locked_super+0xc0/0x13c [ 48.797107][ T4255] deactivate_super+0xf0/0x110 [ 48.797855][ T4255] cleanup_mnt+0x3bc/0x470 [ 48.798548][ T4255] __cleanup_mnt+0x20/0x30 [ 48.799229][ T4255] task_work_run+0x13c/0x1e8 [ 48.799892][ T4255] do_notify_resume+0x2488/0x30a8 [ 48.800592][ T4255] el0_svc+0xf0/0x1d0 [ 48.801263][ T4255] el0t_64_sync_handler+0xcc/0xe4 [ 48.802124][ T4255] el0t_64_sync+0x1a0/0x1a4 [ 48.802875][ T4255] irq event stamp: 818690 [ 48.803491][ T4255] hardirqs last enabled at (818689): [] kasan_quarantine_put+0xc4/0x200 [ 48.804875][ T4255] hardirqs last disabled at (818690): [] el1_dbg+0x24/0x80 [ 48.806171][ T4255] softirqs last enabled at (815290): [] local_bh_enable+0x10/0x34 [ 48.807561][ T4255] softirqs last disabled at (815288): [] local_bh_disable+0x10/0x34 [ 48.808823][ T4255] ---[ end trace 89e47276819b71d3 ]--- [ 48.965120][ T5007] loop0: detected capacity change from 0 to 32768 [ 48.967657][ T5007] BTRFS: device fsid 24c7a497-3402-47dd-bef8-82358f5f30e0 devid 1 transid 8 /dev/loop0 scanned by syz-executor.0 (5007) [ 48.971334][ T5007] BTRFS info (device loop0): using crc32c (crc32c-generic) checksum algorithm [ 48.972688][ T5007] BTRFS info (device loop0): setting nodatasum [ 48.973577][ T5007] BTRFS info (device loop0): enabling ssd optimizations [ 48.974618][ T5007] BTRFS info (device loop0): max_inline at 0 [ 48.975377][ T5007] BTRFS info (device loop0): using free space tree [ 48.976327][ T5007] BTRFS info (device loop0): has skinny extents [ 48.987363][ T5007] FAULT_INJECTION: forcing a failure. [ 48.987363][ T5007] name failslab, interval 1, probability 0, space 0, times 0 [ 48.989318][ T5007] CPU: 0 PID: 5007 Comm: syz-executor.0 Tainted: G W syzkaller #0 [ 48.990723][ T5007] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/02/2026 [ 48.992140][ T5007] Call trace: [ 48.992643][ T5007] dump_backtrace+0x0/0x458 [ 48.993310][ T5007] show_stack+0x2c/0x3c [ 48.993938][ T5007] __dump_stack+0x30/0x40 [ 48.994611][ T5007] dump_stack_lvl+0xf4/0x15c [ 48.995149][ T5007] dump_stack+0x1c/0x5c [ 48.995700][ T5007] should_fail+0x3c8/0x520 [ 48.996297][ T5007] __should_failslab+0xbc/0x10c [ 48.996955][ T5007] should_failslab+0x10/0x28 [ 48.997548][ T5007] slab_pre_alloc_hook+0x64/0xe8 [ 48.998254][ T5007] kmem_cache_alloc+0x94/0x3d8 [ 48.998900][ T5007] btrfs_add_delayed_tree_ref+0x194/0xda4 [ 48.999658][ T5007] btrfs_alloc_tree_block+0xb2c/0x10f0 [ 49.000470][ T5007] btrfs_force_cow_block+0x3ac/0x172c [ 49.001220][ T5007] btrfs_cow_block+0x2d4/0x674 [ 49.001883][ T5007] btrfs_search_slot+0xa10/0x1ec8 [ 49.002625][ T5007] btrfs_insert_empty_items+0x1e8/0x2b0 [ 49.003438][ T5007] btrfs_insert_inode_ref+0x150/0xa24 [ 49.004252][ T5007] btrfs_add_link+0x244/0xac8 [ 49.004897][ T5007] btrfs_link+0x3a4/0x67c [ 49.005506][ T5007] vfs_link+0x5b4/0x748 [ 49.006140][ T5007] do_linkat+0x248/0x754 [ 49.006697][ T5007] __arm64_sys_linkat+0xec/0x108 [ 49.007427][ T5007] invoke_syscall+0x98/0x28c [ 49.008065][ T5007] el0_svc_common+0x13c/0x258 [ 49.008755][ T5007] do_el0_svc+0x5c/0x140 [ 49.009335][ T5007] el0_svc+0x78/0x1d0 [ 49.009910][ T5007] el0t_64_sync_handler+0xcc/0xe4 [ 49.010635][ T5007] el0t_64_sync+0x1a0/0x1a4 [ 49.044815][ T4255] ------------[ cut here ]------------ [ 49.045720][ T4255] WARNING: CPU: 0 PID: 4255 at fs/btrfs/space-info.h:110 btrfs_space_info_update_bytes_may_use+0x2b8/0x664 [ 49.047495][ T4255] Modules linked in: [ 49.048034][ T4255] CPU: 0 PID: 4255 Comm: syz-executor.0 Tainted: G W syzkaller #0 [ 49.049152][ T4255] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/02/2026 [ 49.050410][ T4255] pstate: 82400005 (Nzcv daif +PAN -UAO +TCO -DIT -SSBS BTYPE=--) [ 49.051503][ T4255] pc : btrfs_space_info_update_bytes_may_use+0x2b8/0x664 [ 49.052541][ T4255] lr : btrfs_space_info_update_bytes_may_use+0x2b4/0x664 [ 49.053589][ T4255] sp : ffff80001f2d7740 [ 49.054154][ T4255] x29: ffff80001f2d7750 x28: 0000000000000000 x27: 1fffe00018bf8d0c [ 49.055221][ T4255] x26: dfff800000000000 x25: ffff80001438d110 x24: 0000000000000001 [ 49.056350][ T4255] x23: 0000000000000005 x22: 00000000000d0000 x21: 00000000000cf000 [ 49.057506][ T4255] x20: ffff0000c5fc6860 x19: 0000000000000000 x18: 0000000000000000 [ 49.058623][ T4255] x17: 0000000000000000 x16: ffff80001134e478 x15: 0000000000000000 [ 49.059809][ T4255] x14: ffff700003e5aedc x13: 1ffff00003e5aedc x12: 0000000000000004 [ 49.060894][ T4255] x11: ff8080000a08c7a4 x10: 0000000000000000 x9 : ffff80000a08c7a4 [ 49.061890][ T4255] x8 : ffff0000ced51b40 x7 : ffff80000a08ba74 x6 : 0000000000000000 [ 49.063113][ T4255] x5 : 0000000000000000 x4 : 0000000000000001 x3 : ffff8000082db960 [ 49.064218][ T4255] x2 : fffffffffff30000 x1 : 00000000000d0000 x0 : 00000000000cf000 [ 49.065327][ T4255] Call trace: [ 49.065795][ T4255] btrfs_space_info_update_bytes_may_use+0x2b8/0x664 [ 49.066759][ T4255] btrfs_block_rsv_release+0x3bc/0x498 [ 49.067475][ T4255] btrfs_release_global_block_rsv+0x38/0x22c [ 49.068317][ T4255] btrfs_free_block_groups+0x7b8/0xb20 [ 49.069069][ T4255] close_ctree+0x62c/0x848 [ 49.069710][ T4255] btrfs_put_super+0x40/0x50 [ 49.070372][ T4255] generic_shutdown_super+0x138/0x2f8 [ 49.071108][ T4255] kill_anon_super+0x4c/0x80 [ 49.071792][ T4255] btrfs_kill_super+0x44/0x5c [ 49.072449][ T4255] deactivate_locked_super+0xc0/0x13c [ 49.073374][ T4255] deactivate_super+0xf0/0x110 [ 49.074134][ T4255] cleanup_mnt+0x3bc/0x470 [ 49.074868][ T4255] __cleanup_mnt+0x20/0x30 [ 49.075561][ T4255] task_work_run+0x13c/0x1e8 [ 49.076271][ T4255] do_notify_resume+0x2488/0x30a8 [ 49.077034][ T4255] el0_svc+0xf0/0x1d0 [ 49.077624][ T4255] el0t_64_sync_handler+0xcc/0xe4 [ 49.078415][ T4255] el0t_64_sync+0x1a0/0x1a4 [ 49.079048][ T4255] irq event stamp: 847086 [ 49.079693][ T4255] hardirqs last enabled at (847085): [] kasan_quarantine_put+0xc4/0x200 [ 49.081178][ T4255] hardirqs last disabled at (847086): [] el1_dbg+0x24/0x80 [ 49.082425][ T4255] softirqs last enabled at (846500): [] handle_softirqs+0xa70/0xc14 [ 49.083766][ T4255] softirqs last disabled at (846469): [] __irq_exit_rcu+0x240/0x434 [ 49.085096][ T4255] ---[ end trace 89e47276819b71d4 ]--- [ 49.219725][ T4413] Bluetooth: hci0: command 0x0419 tx timeout [ 49.225299][ T5028] loop0: detected capacity change from 0 to 32768 [ 49.229323][ T5028] BTRFS: device fsid 24c7a497-3402-47dd-bef8-82358f5f30e0 devid 1 transid 8 /dev/loop0 scanned by syz-executor.0 (5028) [ 49.233680][ T5028] BTRFS info (device loop0): using crc32c (crc32c-generic) checksum algorithm [ 49.235063][ T5028] BTRFS info (device loop0): setting nodatasum [ 49.235943][ T5028] BTRFS info (device loop0): enabling ssd optimizations [ 49.236983][ T5028] BTRFS info (device loop0): max_inline at 0 [ 49.237803][ T5028] BTRFS info (device loop0): using free space tree [ 49.238770][ T5028] BTRFS info (device loop0): has skinny extents [ 49.265964][ T5028] FAULT_INJECTION: forcing a failure. [ 49.265964][ T5028] name failslab, interval 1, probability 0, space 0, times 0 [ 49.268019][ T5028] CPU: 1 PID: 5028 Comm: syz-executor.0 Tainted: G W syzkaller #0 [ 49.269339][ T5028] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/02/2026 [ 49.270830][ T5028] Call trace: [ 49.271317][ T5028] dump_backtrace+0x0/0x458 [ 49.271979][ T5028] show_stack+0x2c/0x3c [ 49.272566][ T5028] __dump_stack+0x30/0x40 [ 49.273209][ T5028] dump_stack_lvl+0xf4/0x15c [ 49.273881][ T5028] dump_stack+0x1c/0x5c [ 49.274476][ T5028] should_fail+0x3c8/0x520 [ 49.275105][ T5028] __should_failslab+0xbc/0x10c [ 49.275817][ T5028] should_failslab+0x10/0x28 [ 49.276454][ T5028] slab_pre_alloc_hook+0x64/0xe8 [ 49.277226][ T5028] kmem_cache_alloc+0x94/0x3d8 [ 49.277931][ T5028] btrfs_add_delayed_tree_ref+0x194/0xda4 [ 49.278664][ T5028] btrfs_alloc_tree_block+0xb2c/0x10f0 [ 49.279381][ T5028] btrfs_force_cow_block+0x3ac/0x172c [ 49.280196][ T5028] btrfs_cow_block+0x2d4/0x674 [ 49.280784][ T5028] btrfs_search_slot+0xa10/0x1ec8 [ 49.281509][ T5028] btrfs_insert_empty_items+0x1e8/0x2b0 [ 49.282332][ T5028] btrfs_insert_inode_ref+0x150/0xa24 [ 49.283113][ T5028] btrfs_add_link+0x244/0xac8 [ 49.283754][ T5028] btrfs_link+0x3a4/0x67c [ 49.284365][ T5028] vfs_link+0x5b4/0x748 [ 49.284940][ T5028] do_linkat+0x248/0x754 [ 49.285482][ T5028] __arm64_sys_linkat+0xec/0x108 [ 49.286108][ T5028] invoke_syscall+0x98/0x28c [ 49.286838][ T5028] el0_svc_common+0x13c/0x258 [ 49.287489][ T5028] do_el0_svc+0x5c/0x140 [ 49.288061][ T5028] el0_svc+0x78/0x1d0 [ 49.288568][ T5028] el0t_64_sync_handler+0xcc/0xe4 [ 49.289195][ T5028] el0t_64_sync+0x1a0/0x1a4 [ 49.323423][ T4255] ------------[ cut here ]------------ [ 49.324264][ T4255] WARNING: CPU: 0 PID: 4255 at fs/btrfs/space-info.h:110 btrfs_space_info_update_bytes_may_use+0x2b8/0x664 [ 49.325990][ T4255] Modules linked in: [ 49.326509][ T4255] CPU: 0 PID: 4255 Comm: syz-executor.0 Tainted: G W syzkaller #0 [ 49.327731][ T4255] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/02/2026 [ 49.329157][ T4255] pstate: 82400005 (Nzcv daif +PAN -UAO +TCO -DIT -SSBS BTYPE=--) [ 49.330267][ T4255] pc : btrfs_space_info_update_bytes_may_use+0x2b8/0x664 [ 49.331316][ T4255] lr : btrfs_space_info_update_bytes_may_use+0x2b4/0x664 [ 49.332378][ T4255] sp : ffff80001f2d7740 [ 49.332977][ T4255] x29: ffff80001f2d7750 x28: 0000000000000000 x27: 1fffe00019b3650c [ 49.334118][ T4255] x26: dfff800000000000 x25: ffff80001438d110 x24: 0000000000000001 [ 49.335214][ T4255] x23: 0000000000000005 x22: 00000000000d0000 x21: 00000000000cf000 [ 49.336454][ T4255] x20: ffff0000cd9b2860 x19: 0000000000000000 x18: 0000000000000000 [ 49.337662][ T4255] x17: 0000000000000000 x16: ffff80001134e478 x15: 0000000000000000 [ 49.338784][ T4255] x14: ffff700003e5aedc x13: 1ffff00003e5aedc x12: 0000000000000004 [ 49.339863][ T4255] x11: ff8080000a08c7a4 x10: 0000000000000000 x9 : ffff80000a08c7a4 [ 49.340936][ T4255] x8 : ffff0000ced51b40 x7 : ffff80000a08ba74 x6 : 0000000000000000 [ 49.342016][ T4255] x5 : 0000000000000000 x4 : 0000000000000001 x3 : ffff8000082db960 [ 49.343109][ T4255] x2 : fffffffffff30000 x1 : 00000000000d0000 x0 : 00000000000cf000 [ 49.344126][ T4255] Call trace: [ 49.344583][ T4255] btrfs_space_info_update_bytes_may_use+0x2b8/0x664 [ 49.345537][ T4255] btrfs_block_rsv_release+0x3bc/0x498 [ 49.346330][ T4255] btrfs_release_global_block_rsv+0x38/0x22c [ 49.347173][ T4255] btrfs_free_block_groups+0x7b8/0xb20 [ 49.347899][ T4255] close_ctree+0x62c/0x848 [ 49.348511][ T4255] btrfs_put_super+0x40/0x50 [ 49.349167][ T4255] generic_shutdown_super+0x138/0x2f8 [ 49.349937][ T4255] kill_anon_super+0x4c/0x80 [ 49.350608][ T4255] btrfs_kill_super+0x44/0x5c [ 49.351288][ T4255] deactivate_locked_super+0xc0/0x13c [ 49.352095][ T4255] deactivate_super+0xf0/0x110 [ 49.352748][ T4255] cleanup_mnt+0x3bc/0x470 [ 49.353382][ T4255] __cleanup_mnt+0x20/0x30 [ 49.354060][ T4255] task_work_run+0x13c/0x1e8 [ 49.354690][ T4255] do_notify_resume+0x2488/0x30a8 [ 49.355455][ T4255] el0_svc+0xf0/0x1d0 [ 49.356056][ T4255] el0t_64_sync_handler+0xcc/0xe4 [ 49.356810][ T4255] el0t_64_sync+0x1a0/0x1a4 [ 49.357440][ T4255] irq event stamp: 875310 [ 49.358059][ T4255] hardirqs last enabled at (875309): [] kasan_quarantine_put+0xc4/0x200 [ 49.359451][ T4255] hardirqs last disabled at (875310): [] el1_dbg+0x24/0x80 [ 49.360685][ T4255] softirqs last enabled at (873906): [] handle_softirqs+0xa70/0xc14 [ 49.362102][ T4255] softirqs last disabled at (873857): [] __irq_exit_rcu+0x240/0x434 [ 49.363445][ T4255] ---[ end trace 89e47276819b71d5 ]--- [ 49.525932][ T5049] loop0: detected capacity change from 0 to 32768 [ 49.530866][ T5049] BTRFS: device fsid 24c7a497-3402-47dd-bef8-82358f5f30e0 devid 1 transid 8 /dev/loop0 scanned by syz-executor.0 (5049) [ 49.535534][ T5049] BTRFS info (device loop0): using crc32c (crc32c-generic) checksum algorithm [ 49.536882][ T5049] BTRFS info (device loop0): setting nodatasum [ 49.537744][ T5049] BTRFS info (device loop0): enabling ssd optimizations [ 49.538796][ T5049] BTRFS info (device loop0): max_inline at 0 [ 49.539763][ T5049] BTRFS info (device loop0): using free space tree [ 49.540890][ T5049] BTRFS info (device loop0): has skinny extents [ 49.554735][ T5049] FAULT_INJECTION: forcing a failure. [ 49.554735][ T5049] name failslab, interval 1, probability 0, space 0, times 0 [ 49.556578][ T5049] CPU: 1 PID: 5049 Comm: syz-executor.0 Tainted: G W syzkaller #0 [ 49.557863][ T5049] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/02/2026 [ 49.559331][ T5049] Call trace: [ 49.559813][ T5049] dump_backtrace+0x0/0x458 [ 49.560484][ T5049] show_stack+0x2c/0x3c [ 49.561076][ T5049] __dump_stack+0x30/0x40 [ 49.561760][ T5049] dump_stack_lvl+0xf4/0x15c [ 49.562470][ T5049] dump_stack+0x1c/0x5c [ 49.563111][ T5049] should_fail+0x3c8/0x520 [ 49.563702][ T5049] __should_failslab+0xbc/0x10c [ 49.564468][ T5049] should_failslab+0x10/0x28 [ 49.565144][ T5049] slab_pre_alloc_hook+0x64/0xe8 [ 49.565818][ T5049] kmem_cache_alloc+0x94/0x3d8 [ 49.566402][ T5049] btrfs_add_delayed_tree_ref+0x194/0xda4 [ 49.567242][ T5049] btrfs_alloc_tree_block+0xb2c/0x10f0 [ 49.568012][ T5049] btrfs_force_cow_block+0x3ac/0x172c [ 49.568802][ T5049] btrfs_cow_block+0x2d4/0x674 [ 49.569482][ T5049] btrfs_search_slot+0xa10/0x1ec8 [ 49.570201][ T5049] btrfs_insert_empty_items+0x1e8/0x2b0 [ 49.570992][ T5049] btrfs_insert_inode_ref+0x150/0xa24 [ 49.571694][ T5049] btrfs_add_link+0x244/0xac8 [ 49.572316][ T5049] btrfs_link+0x3a4/0x67c [ 49.572937][ T5049] vfs_link+0x5b4/0x748 [ 49.573521][ T5049] do_linkat+0x248/0x754 [ 49.574181][ T5049] __arm64_sys_linkat+0xec/0x108 [ 49.574948][ T5049] invoke_syscall+0x98/0x28c [ 49.575630][ T5049] el0_svc_common+0x13c/0x258 [ 49.576330][ T5049] do_el0_svc+0x5c/0x140 [ 49.576939][ T5049] el0_svc+0x78/0x1d0 [ 49.577432][ T5049] el0t_64_sync_handler+0xcc/0xe4 [ 49.578074][ T5049] el0t_64_sync+0x1a0/0x1a4 [ 49.610513][ T4255] ------------[ cut here ]------------ [ 49.611376][ T4255] WARNING: CPU: 1 PID: 4255 at fs/btrfs/space-info.h:110 btrfs_space_info_update_bytes_may_use+0x2b8/0x664 [ 49.613046][ T4255] Modules linked in: [ 49.613559][ T4255] CPU: 1 PID: 4255 Comm: syz-executor.0 Tainted: G W syzkaller #0 [ 49.614853][ T4255] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/02/2026 [ 49.616275][ T4255] pstate: 82400005 (Nzcv daif +PAN -UAO +TCO -DIT -SSBS BTYPE=--) [ 49.617367][ T4255] pc : btrfs_space_info_update_bytes_may_use+0x2b8/0x664 [ 49.618379][ T4255] lr : btrfs_space_info_update_bytes_may_use+0x2b4/0x664 [ 49.619344][ T4255] sp : ffff80001f2d7740 [ 49.619867][ T4255] x29: ffff80001f2d7750 x28: 0000000000000000 x27: 1fffe0001919fd0c [ 49.621072][ T4255] x26: dfff800000000000 x25: ffff80001438d110 x24: 0000000000000002 [ 49.622191][ T4255] x23: 0000000000000005 x22: 00000000000d0000 x21: 00000000000cf000 [ 49.623280][ T4255] x20: ffff0000c8cfe860 x19: 0000000000000000 x18: 0000000000000000 [ 49.624380][ T4255] x17: 0000000000000000 x16: ffff80001134e478 x15: 0000000000000000 [ 49.625496][ T4255] x14: ffff700003e5aedc x13: 1ffff00003e5aedc x12: 0000000000000004 [ 49.626664][ T4255] x11: ff8080000a08c7a4 x10: 0000000000000000 x9 : ffff80000a08c7a4 [ 49.627769][ T4255] x8 : ffff0000ced51b40 x7 : ffff80000a08ba74 x6 : 0000000000000000 [ 49.628877][ T4255] x5 : 0000000000000000 x4 : 0000000000000001 x3 : ffff8000082db960 [ 49.630062][ T4255] x2 : fffffffffff30000 x1 : 00000000000d0000 x0 : 00000000000cf000 [ 49.631210][ T4255] Call trace: [ 49.631667][ T4255] btrfs_space_info_update_bytes_may_use+0x2b8/0x664 [ 49.632622][ T4255] btrfs_block_rsv_release+0x3bc/0x498 [ 49.633424][ T4255] btrfs_release_global_block_rsv+0x38/0x22c [ 49.634324][ T4255] btrfs_free_block_groups+0x7b8/0xb20 [ 49.635079][ T4255] close_ctree+0x62c/0x848 [ 49.635714][ T4255] btrfs_put_super+0x40/0x50 [ 49.636335][ T4255] generic_shutdown_super+0x138/0x2f8 [ 49.637077][ T4255] kill_anon_super+0x4c/0x80 [ 49.637751][ T4255] btrfs_kill_super+0x44/0x5c [ 49.638397][ T4255] deactivate_locked_super+0xc0/0x13c [ 49.639211][ T4255] deactivate_super+0xf0/0x110 [ 49.639830][ T4255] cleanup_mnt+0x3bc/0x470 [ 49.640492][ T4255] __cleanup_mnt+0x20/0x30 [ 49.641199][ T4255] task_work_run+0x13c/0x1e8 [ 49.641806][ T4255] do_notify_resume+0x2488/0x30a8 [ 49.642485][ T4255] el0_svc+0xf0/0x1d0 [ 49.643049][ T4255] el0t_64_sync_handler+0xcc/0xe4 [ 49.643725][ T4255] el0t_64_sync+0x1a0/0x1a4 [ 49.644368][ T4255] irq event stamp: 904852 [ 49.644977][ T4255] hardirqs last enabled at (904851): [] kasan_quarantine_put+0xc4/0x200 [ 49.646429][ T4255] hardirqs last disabled at (904852): [] el1_dbg+0x24/0x80 [ 49.647616][ T4255] softirqs last enabled at (903644): [] handle_softirqs+0xa70/0xc14 [ 49.648986][ T4255] softirqs last disabled at (903633): [] __irq_exit_rcu+0x240/0x434 [ 49.650261][ T4255] ---[ end trace 89e47276819b71d6 ]--- [ 49.786435][ T5070] loop0: detected capacity change from 0 to 32768 [ 49.789168][ T5070] BTRFS: device fsid 24c7a497-3402-47dd-bef8-82358f5f30e0 devid 1 transid 8 /dev/loop0 scanned by syz-executor.0 (5070) [ 49.798509][ T5070] BTRFS info (device loop0): using crc32c (crc32c-generic) checksum algorithm [ 49.799759][ T5070] BTRFS info (device loop0): setting nodatasum [ 49.800638][ T5070] BTRFS info (device loop0): enabling ssd optimizations [ 49.801599][ T5070] BTRFS info (device loop0): max_inline at 0 [ 49.802498][ T5070] BTRFS info (device loop0): using free space tree [ 49.803399][ T5070] BTRFS info (device loop0): has skinny extents [ 49.817437][ T5070] FAULT_INJECTION: forcing a failure. [ 49.817437][ T5070] name failslab, interval 1, probability 0, space 0, times 0 [ 49.819346][ T5070] CPU: 1 PID: 5070 Comm: syz-executor.0 Tainted: G W syzkaller #0 [ 49.820530][ T5070] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/02/2026 [ 49.821860][ T5070] Call trace: [ 49.822284][ T5070] dump_backtrace+0x0/0x458 [ 49.822900][ T5070] show_stack+0x2c/0x3c [ 49.823488][ T5070] __dump_stack+0x30/0x40 [ 49.824038][ T5070] dump_stack_lvl+0xf4/0x15c [ 49.824672][ T5070] dump_stack+0x1c/0x5c [ 49.825260][ T5070] should_fail+0x3c8/0x520 [ 49.825869][ T5070] __should_failslab+0xbc/0x10c [ 49.826512][ T5070] should_failslab+0x10/0x28 [ 49.827140][ T5070] slab_pre_alloc_hook+0x64/0xe8 [ 49.827855][ T5070] kmem_cache_alloc+0x94/0x3d8 [ 49.828524][ T5070] alloc_extent_state+0x38/0x434 [ 49.829205][ T5070] set_extent_bit+0x1ac/0x13a8 [ 49.829882][ T5070] btrfs_alloc_tree_block+0x930/0x10f0 [ 49.830680][ T5070] btrfs_force_cow_block+0x3ac/0x172c [ 49.831455][ T5070] btrfs_cow_block+0x2d4/0x674 [ 49.832116][ T5070] btrfs_search_slot+0xa10/0x1ec8 [ 49.832853][ T5070] btrfs_insert_empty_items+0x1e8/0x2b0 [ 49.833570][ T5070] btrfs_insert_inode_ref+0x150/0xa24 [ 49.834329][ T5070] btrfs_add_link+0x244/0xac8 [ 49.834991][ T5070] btrfs_link+0x3a4/0x67c [ 49.835643][ T5070] vfs_link+0x5b4/0x748 [ 49.836260][ T5070] do_linkat+0x248/0x754 [ 49.836848][ T5070] __arm64_sys_linkat+0xec/0x108 [ 49.837559][ T5070] invoke_syscall+0x98/0x28c [ 49.838202][ T5070] el0_svc_common+0x13c/0x258 [ 49.838838][ T5070] do_el0_svc+0x5c/0x140 [ 49.839366][ T5070] el0_svc+0x78/0x1d0 [ 49.839888][ T5070] el0t_64_sync_handler+0xcc/0xe4 [ 49.840560][ T5070] el0t_64_sync+0x1a0/0x1a4 [ 50.055266][ T5091] loop0: detected capacity change from 0 to 32768 [ 50.057680][ T5091] BTRFS: device fsid 24c7a497-3402-47dd-bef8-82358f5f30e0 devid 1 transid 8 /dev/loop0 scanned by syz-executor.0 (5091) [ 50.061467][ T5091] BTRFS info (device loop0): using crc32c (crc32c-generic) checksum algorithm [ 50.062931][ T5091] BTRFS info (device loop0): setting nodatasum [ 50.063793][ T5091] BTRFS info (device loop0): enabling ssd optimizations [ 50.064900][ T5091] BTRFS info (device loop0): max_inline at 0 [ 50.065757][ T5091] BTRFS info (device loop0): using free space tree [ 50.066756][ T5091] BTRFS info (device loop0): has skinny extents [ 50.084338][ T5091] FAULT_INJECTION: forcing a failure. [ 50.084338][ T5091] name failslab, interval 1, probability 0, space 0, times 0 [ 50.086325][ T5091] CPU: 0 PID: 5091 Comm: syz-executor.0 Tainted: G W syzkaller #0 [ 50.087670][ T5091] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/02/2026 [ 50.089122][ T5091] Call trace: [ 50.089608][ T5091] dump_backtrace+0x0/0x458 [ 50.090229][ T5091] show_stack+0x2c/0x3c [ 50.090875][ T5091] __dump_stack+0x30/0x40 [ 50.091512][ T5091] dump_stack_lvl+0xf4/0x15c [ 50.092221][ T5091] dump_stack+0x1c/0x5c [ 50.092790][ T5091] should_fail+0x3c8/0x520 [ 50.093481][ T5091] __should_failslab+0xbc/0x10c [ 50.094199][ T5091] should_failslab+0x10/0x28 [ 50.094852][ T5091] slab_pre_alloc_hook+0x64/0xe8 [ 50.095545][ T5091] kmem_cache_alloc+0x94/0x3d8 [ 50.096230][ T5091] btrfs_add_delayed_tree_ref+0x194/0xda4 [ 50.097081][ T5091] btrfs_alloc_tree_block+0xb2c/0x10f0 [ 50.097793][ T5091] btrfs_force_cow_block+0x3ac/0x172c [ 50.098558][ T5091] btrfs_cow_block+0x2d4/0x674 [ 50.099237][ T5091] btrfs_search_slot+0xa10/0x1ec8 [ 50.099929][ T5091] btrfs_insert_empty_items+0x1e8/0x2b0 [ 50.100661][ T5091] btrfs_insert_inode_ref+0x150/0xa24 [ 50.101466][ T5091] btrfs_add_link+0x244/0xac8 [ 50.102188][ T5091] btrfs_link+0x3a4/0x67c [ 50.102793][ T5091] vfs_link+0x5b4/0x748 [ 50.103372][ T5091] do_linkat+0x248/0x754 [ 50.103990][ T5091] __arm64_sys_linkat+0xec/0x108 [ 50.104694][ T5091] invoke_syscall+0x98/0x28c [ 50.105308][ T5091] el0_svc_common+0x13c/0x258 [ 50.105902][ T5091] do_el0_svc+0x5c/0x140 [ 50.106488][ T5091] el0_svc+0x78/0x1d0 [ 50.107060][ T5091] el0t_64_sync_handler+0xcc/0xe4 [ 50.107792][ T5091] el0t_64_sync+0x1a0/0x1a4 [ 50.140625][ T4255] ------------[ cut here ]------------ [ 50.141433][ T4255] WARNING: CPU: 1 PID: 4255 at fs/btrfs/space-info.h:110 btrfs_space_info_update_bytes_may_use+0x2b8/0x664 [ 50.142950][ T4255] Modules linked in: [ 50.143453][ T4255] CPU: 1 PID: 4255 Comm: syz-executor.0 Tainted: G W syzkaller #0 [ 50.144656][ T4255] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/02/2026 [ 50.145892][ T4255] pstate: 82400005 (Nzcv daif +PAN -UAO +TCO -DIT -SSBS BTYPE=--) [ 50.146836][ T4255] pc : btrfs_space_info_update_bytes_may_use+0x2b8/0x664 [ 50.147691][ T4255] lr : btrfs_space_info_update_bytes_may_use+0x2b4/0x664 [ 50.148656][ T4255] sp : ffff80001f2d7740 [ 50.149156][ T4255] x29: ffff80001f2d7750 x28: 0000000000000000 x27: 1fffe0001a521b0c [ 50.150142][ T4255] x26: dfff800000000000 x25: ffff80001438d110 x24: 0000000000000002 [ 50.151234][ T4255] x23: 0000000000000005 x22: 00000000000d0000 x21: 00000000000cf000 [ 50.152307][ T4255] x20: ffff0000d290d860 x19: 0000000000000000 x18: 0000000000000000 [ 50.153428][ T4255] x17: 0000000000000000 x16: ffff80001134e478 x15: 0000000000000000 [ 50.154477][ T4255] x14: ffff700003e5aedc x13: 1ffff00003e5aedc x12: 0000000000000004 [ 50.155561][ T4255] x11: ff8080000a08c7a4 x10: 0000000000000000 x9 : ffff80000a08c7a4 [ 50.156631][ T4255] x8 : ffff0000ced51b40 x7 : ffff80000a08ba74 x6 : 0000000000000000 [ 50.157676][ T4255] x5 : 0000000000000000 x4 : 0000000000000001 x3 : ffff8000082db960 [ 50.158772][ T4255] x2 : fffffffffff30000 x1 : 00000000000d0000 x0 : 00000000000cf000 [ 50.159867][ T4255] Call trace: [ 50.160316][ T4255] btrfs_space_info_update_bytes_may_use+0x2b8/0x664 [ 50.161256][ T4255] btrfs_block_rsv_release+0x3bc/0x498 [ 50.161992][ T4255] btrfs_release_global_block_rsv+0x38/0x22c [ 50.162750][ T4255] btrfs_free_block_groups+0x7b8/0xb20 [ 50.163559][ T4255] close_ctree+0x62c/0x848 [ 50.164129][ T4255] btrfs_put_super+0x40/0x50 [ 50.164805][ T4255] generic_shutdown_super+0x138/0x2f8 [ 50.165508][ T4255] kill_anon_super+0x4c/0x80 [ 50.166162][ T4255] btrfs_kill_super+0x44/0x5c [ 50.166800][ T4255] deactivate_locked_super+0xc0/0x13c [ 50.167547][ T4255] deactivate_super+0xf0/0x110 [ 50.168185][ T4255] cleanup_mnt+0x3bc/0x470 [ 50.168821][ T4255] __cleanup_mnt+0x20/0x30 [ 50.169501][ T4255] task_work_run+0x13c/0x1e8 [ 50.170185][ T4255] do_notify_resume+0x2488/0x30a8 [ 50.170860][ T4255] el0_svc+0xf0/0x1d0 [ 50.171400][ T4255] el0t_64_sync_handler+0xcc/0xe4 [ 50.172073][ T4255] el0t_64_sync+0x1a0/0x1a4 [ 50.172718][ T4255] irq event stamp: 963974 [ 50.173319][ T4255] hardirqs last enabled at (963973): [] kasan_quarantine_put+0xc4/0x200 [ 50.174564][ T4255] hardirqs last disabled at (963974): [] el1_dbg+0x24/0x80 [ 50.175693][ T4255] softirqs last enabled at (960440): [] local_bh_enable+0x10/0x34 [ 50.177008][ T4255] softirqs last disabled at (960438): [] local_bh_disable+0x10/0x34 [ 50.178192][ T4255] ---[ end trace 89e47276819b71d7 ]--- [ 50.337035][ T5112] BTRFS: device fsid 24c7a497-3402-47dd-bef8-82358f5f30e0 devid 1 transid 8 /dev/loop0 scanned by syz-executor.0 (5112) [ 50.340405][ T5112] BTRFS info (device loop0): using crc32c (crc32c-generic) checksum algorithm [ 50.342655][ T5112] BTRFS info (device loop0): setting nodatasum [ 50.343522][ T5112] BTRFS info (device loop0): enabling ssd optimizations [ 50.344561][ T5112] BTRFS info (device loop0): max_inline at 0 [ 50.345394][ T5112] BTRFS info (device loop0): using free space tree [ 50.346394][ T5112] BTRFS info (device loop0): has skinny extents [ 50.365264][ T5112] FAULT_INJECTION: forcing a failure. [ 50.365264][ T5112] name failslab, interval 1, probability 0, space 0, times 0 [ 50.367081][ T5112] CPU: 1 PID: 5112 Comm: syz-executor.0 Tainted: G W syzkaller #0 [ 50.368290][ T5112] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/02/2026 [ 50.369648][ T5112] Call trace: [ 50.370098][ T5112] dump_backtrace+0x0/0x458 [ 50.370742][ T5112] show_stack+0x2c/0x3c [ 50.371280][ T5112] __dump_stack+0x30/0x40 [ 50.371869][ T5112] dump_stack_lvl+0xf4/0x15c [ 50.372478][ T5112] dump_stack+0x1c/0x5c [ 50.373023][ T5112] should_fail+0x3c8/0x520 [ 50.373611][ T5112] __should_failslab+0xbc/0x10c [ 50.374361][ T5112] should_failslab+0x10/0x28 [ 50.375004][ T5112] slab_pre_alloc_hook+0x64/0xe8 [ 50.375672][ T5112] kmem_cache_alloc+0x94/0x3d8 [ 50.376316][ T5112] btrfs_add_delayed_tree_ref+0x1b0/0xda4 [ 50.377084][ T5112] btrfs_alloc_tree_block+0xb2c/0x10f0 [ 50.377841][ T5112] btrfs_force_cow_block+0x3ac/0x172c [ 50.378581][ T5112] btrfs_cow_block+0x2d4/0x674 [ 50.379259][ T5112] btrfs_search_slot+0xa10/0x1ec8 [ 50.379941][ T5112] btrfs_insert_empty_items+0x1e8/0x2b0 [ 50.380691][ T5112] btrfs_insert_inode_ref+0x150/0xa24 [ 50.381447][ T5112] btrfs_add_link+0x244/0xac8 [ 50.382115][ T5112] btrfs_link+0x3a4/0x67c [ 50.382720][ T5112] vfs_link+0x5b4/0x748 [ 50.383353][ T5112] do_linkat+0x248/0x754 [ 50.384020][ T5112] __arm64_sys_linkat+0xec/0x108 [ 50.384715][ T5112] invoke_syscall+0x98/0x28c [ 50.385333][ T5112] el0_svc_common+0x13c/0x258 [ 50.385972][ T5112] do_el0_svc+0x5c/0x140 [ 50.386564][ T5112] el0_svc+0x78/0x1d0 [ 50.387138][ T5112] el0t_64_sync_handler+0xcc/0xe4 [ 50.387842][ T5112] el0t_64_sync+0x1a0/0x1a4 [ 50.421616][ T4255] ------------[ cut here ]------------ [ 50.422619][ T4255] WARNING: CPU: 0 PID: 4255 at fs/btrfs/space-info.h:110 btrfs_space_info_update_bytes_may_use+0x2b8/0x664 [ 50.424364][ T4255] Modules linked in: [ 50.424940][ T4255] CPU: 0 PID: 4255 Comm: syz-executor.0 Tainted: G W syzkaller #0 [ 50.426473][ T4255] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/02/2026 [ 50.428081][ T4255] pstate: 82400005 (Nzcv daif +PAN -UAO +TCO -DIT -SSBS BTYPE=--) [ 50.429303][ T4255] pc : btrfs_space_info_update_bytes_may_use+0x2b8/0x664 [ 50.430392][ T4255] lr : btrfs_space_info_update_bytes_may_use+0x2b4/0x664 [ 50.431417][ T4255] sp : ffff80001f2d7740 [ 50.431957][ T4255] x29: ffff80001f2d7750 x28: 0000000000000000 x27: 1fffe0001b00ad0c [ 50.433061][ T4255] x26: dfff800000000000 x25: ffff80001438d110 x24: 0000000000000001 [ 50.434173][ T4255] x23: 0000000000000005 x22: 00000000000d0000 x21: 00000000000cf000 [ 50.435288][ T4255] x20: ffff0000d8056860 x19: 0000000000000000 x18: 0000000000000000 [ 50.436445][ T4255] x17: 0000000000000000 x16: ffff80001134e478 x15: 0000000000000000 [ 50.437653][ T4255] x14: ffff700003e5aedc x13: 1ffff00003e5aedc x12: 0000000000000004 [ 50.438873][ T4255] x11: ff8080000a08c7a4 x10: 0000000000000000 x9 : ffff80000a08c7a4 [ 50.440000][ T4255] x8 : ffff0000ced51b40 x7 : ffff80000a08ba74 x6 : 0000000000000000 [ 50.441251][ T4255] x5 : 0000000000000000 x4 : 0000000000000001 x3 : ffff8000082db960 [ 50.442473][ T4255] x2 : fffffffffff30000 x1 : 00000000000d0000 x0 : 00000000000cf000 [ 50.443604][ T4255] Call trace: [ 50.444100][ T4255] btrfs_space_info_update_bytes_may_use+0x2b8/0x664 [ 50.445048][ T4255] btrfs_block_rsv_release+0x3bc/0x498 [ 50.445982][ T4255] btrfs_release_global_block_rsv+0x38/0x22c [ 50.446889][ T4255] btrfs_free_block_groups+0x7b8/0xb20 [ 50.447738][ T4255] close_ctree+0x62c/0x848 [ 50.448302][ T4255] btrfs_put_super+0x40/0x50 [ 50.448964][ T4255] generic_shutdown_super+0x138/0x2f8 [ 50.449764][ T4255] kill_anon_super+0x4c/0x80 [ 50.450473][ T4255] btrfs_kill_super+0x44/0x5c [ 50.451195][ T4255] deactivate_locked_super+0xc0/0x13c [ 50.451950][ T4255] deactivate_super+0xf0/0x110 [ 50.452686][ T4255] cleanup_mnt+0x3bc/0x470 [ 50.453293][ T4255] __cleanup_mnt+0x20/0x30 [ 50.453896][ T4255] task_work_run+0x13c/0x1e8 [ 50.454540][ T4255] do_notify_resume+0x2488/0x30a8 [ 50.455368][ T4255] el0_svc+0xf0/0x1d0 [ 50.455980][ T4255] el0t_64_sync_handler+0xcc/0xe4 [ 50.456683][ T4255] el0t_64_sync+0x1a0/0x1a4 [ 50.457361][ T4255] irq event stamp: 994524 [ 50.457958][ T4255] hardirqs last enabled at (994523): [] kasan_quarantine_put+0xc4/0x200 [ 50.459350][ T4255] hardirqs last disabled at (994524): [] el1_dbg+0x24/0x80 [ 50.460649][ T4255] softirqs last enabled at (993156): [] handle_softirqs+0xa70/0xc14 [ 50.461925][ T4255] softirqs last disabled at (993129): [] __irq_exit_rcu+0x240/0x434 [ 50.463191][ T4255] ---[ end trace 89e47276819b71d8 ]--- [ 50.615226][ T5133] BTRFS: device fsid 24c7a497-3402-47dd-bef8-82358f5f30e0 devid 1 transid 8 /dev/loop0 scanned by syz-executor.0 (5133) [ 50.620146][ T5133] BTRFS info (device loop0): using crc32c (crc32c-generic) checksum algorithm [ 50.621490][ T5133] BTRFS info (device loop0): setting nodatasum [ 50.622356][ T5133] BTRFS info (device loop0): enabling ssd optimizations [ 50.623397][ T5133] BTRFS info (device loop0): max_inline at 0 [ 50.624200][ T5133] BTRFS info (device loop0): using free space tree [ 50.625152][ T5133] BTRFS info (device loop0): has skinny extents [ 50.636278][ T5133] FAULT_INJECTION: forcing a failure. [ 50.636278][ T5133] name failslab, interval 1, probability 0, space 0, times 0 [ 50.638251][ T5133] CPU: 0 PID: 5133 Comm: syz-executor.0 Tainted: G W syzkaller #0 [ 50.639480][ T5133] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/02/2026 [ 50.640804][ T5133] Call trace: [ 50.641253][ T5133] dump_backtrace+0x0/0x458 [ 50.641895][ T5133] show_stack+0x2c/0x3c [ 50.642459][ T5133] __dump_stack+0x30/0x40 [ 50.643064][ T5133] dump_stack_lvl+0xf4/0x15c [ 50.643752][ T5133] dump_stack+0x1c/0x5c [ 50.644331][ T5133] should_fail+0x3c8/0x520 [ 50.644944][ T5133] __should_failslab+0xbc/0x10c [ 50.645587][ T5133] should_failslab+0x10/0x28 [ 50.646224][ T5133] slab_pre_alloc_hook+0x64/0xe8 [ 50.646923][ T5133] kmem_cache_alloc+0x94/0x3d8 [ 50.647535][ T5133] btrfs_add_delayed_tree_ref+0x194/0xda4 [ 50.648263][ T5133] btrfs_alloc_tree_block+0xb2c/0x10f0 [ 50.648992][ T5133] btrfs_force_cow_block+0x3ac/0x172c [ 50.649689][ T5133] btrfs_cow_block+0x2d4/0x674 [ 50.650322][ T5133] btrfs_search_slot+0xa10/0x1ec8 [ 50.650988][ T5133] btrfs_insert_empty_items+0x1e8/0x2b0 [ 50.651706][ T5133] btrfs_insert_inode_ref+0x150/0xa24 [ 50.652449][ T5133] btrfs_add_link+0x244/0xac8 [ 50.653073][ T5133] btrfs_link+0x3a4/0x67c [ 50.653645][ T5133] vfs_link+0x5b4/0x748 [ 50.654244][ T5133] do_linkat+0x248/0x754 [ 50.654891][ T5133] __arm64_sys_linkat+0xec/0x108 [ 50.655619][ T5133] invoke_syscall+0x98/0x28c [ 50.656258][ T5133] el0_svc_common+0x13c/0x258 [ 50.656878][ T5133] do_el0_svc+0x5c/0x140 [ 50.657415][ T5133] el0_svc+0x78/0x1d0 [ 50.657942][ T5133] el0t_64_sync_handler+0xcc/0xe4 [ 50.658646][ T5133] el0t_64_sync+0x1a0/0x1a4 [ 50.693899][ T4255] ------------[ cut here ]------------ [ 50.694728][ T4255] WARNING: CPU: 1 PID: 4255 at fs/btrfs/space-info.h:110 btrfs_space_info_update_bytes_may_use+0x2b8/0x664 [ 50.696387][ T4255] Modules linked in: [ 50.697012][ T4255] CPU: 1 PID: 4255 Comm: syz-executor.0 Tainted: G W syzkaller #0 [ 50.698386][ T4255] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/02/2026 [ 50.699805][ T4255] pstate: 82400005 (Nzcv daif +PAN -UAO +TCO -DIT -SSBS BTYPE=--) [ 50.700894][ T4255] pc : btrfs_space_info_update_bytes_may_use+0x2b8/0x664 [ 50.701887][ T4255] lr : btrfs_space_info_update_bytes_may_use+0x2b4/0x664 [ 50.702906][ T4255] sp : ffff80001f2d7740 [ 50.703500][ T4255] x29: ffff80001f2d7750 x28: 0000000000000000 x27: 1fffe00019cb930c [ 50.704768][ T4255] x26: dfff800000000000 x25: ffff80001438d110 x24: 0000000000000002 [ 50.705843][ T4255] x23: 0000000000000005 x22: 00000000000d0000 x21: 00000000000cf000 [ 50.706997][ T4255] x20: ffff0000ce5c9860 x19: 0000000000000000 x18: 0000000000000000 [ 50.708074][ T4255] x17: 0000000000000000 x16: ffff80001134e478 x15: 0000000000000000 [ 50.709199][ T4255] x14: ffff700003e5aedc x13: 1ffff00003e5aedc x12: 0000000000000004 [ 50.710251][ T4255] x11: ff8080000a08c7a4 x10: 0000000000000000 x9 : ffff80000a08c7a4 [ 50.711304][ T4255] x8 : ffff0000ced51b40 x7 : ffff80000a08ba74 x6 : 0000000000000000 [ 50.712357][ T4255] x5 : 0000000000000000 x4 : 0000000000000001 x3 : ffff8000082db960 [ 50.713470][ T4255] x2 : fffffffffff30000 x1 : 00000000000d0000 x0 : 00000000000cf000 [ 50.714572][ T4255] Call trace: [ 50.715031][ T4255] btrfs_space_info_update_bytes_may_use+0x2b8/0x664 [ 50.715962][ T4255] btrfs_block_rsv_release+0x3bc/0x498 [ 50.716661][ T4255] btrfs_release_global_block_rsv+0x38/0x22c [ 50.717439][ T4255] btrfs_free_block_groups+0x7b8/0xb20 [ 50.718119][ T4255] close_ctree+0x62c/0x848 [ 50.718715][ T4255] btrfs_put_super+0x40/0x50 [ 50.719318][ T4255] generic_shutdown_super+0x138/0x2f8 [ 50.720120][ T4255] kill_anon_super+0x4c/0x80 [ 50.720800][ T4255] btrfs_kill_super+0x44/0x5c [ 50.721461][ T4255] deactivate_locked_super+0xc0/0x13c [ 50.722201][ T4255] deactivate_super+0xf0/0x110 [ 50.722833][ T4255] cleanup_mnt+0x3bc/0x470 [ 50.723421][ T4255] __cleanup_mnt+0x20/0x30 [ 50.724015][ T4255] task_work_run+0x13c/0x1e8 [ 50.724677][ T4255] do_notify_resume+0x2488/0x30a8 [ 50.725376][ T4255] el0_svc+0xf0/0x1d0 [ 50.726106][ T4255] el0t_64_sync_handler+0xcc/0xe4 [ 50.726829][ T4255] el0t_64_sync+0x1a0/0x1a4 [ 50.727523][ T4255] irq event stamp: 1024106 [ 50.728143][ T4255] hardirqs last enabled at (1024105): [] kasan_quarantine_put+0xc4/0x200 [ 50.729448][ T4255] hardirqs last disabled at (1024106): [] el1_dbg+0x24/0x80 [ 50.730868][ T4255] softirqs last enabled at (1022570): [] handle_softirqs+0xa70/0xc14 [ 50.732187][ T4255] softirqs last disabled at (1022561): [] __irq_exit_rcu+0x240/0x434 [ 50.733610][ T4255] ---[ end trace 89e47276819b71d9 ]--- [ 50.876945][ T5154] BTRFS: device fsid 24c7a497-3402-47dd-bef8-82358f5f30e0 devid 1 transid 8 /dev/loop0 scanned by syz-executor.0 (5154) [ 50.880728][ T5154] BTRFS info (device loop0): using crc32c (crc32c-generic) checksum algorithm [ 50.882365][ T5154] BTRFS info (device loop0): setting nodatasum [ 50.883308][ T5154] BTRFS info (device loop0): enabling ssd optimizations [ 50.884344][ T5154] BTRFS info (device loop0): max_inline at 0 [ 50.885076][ T5154] BTRFS info (device loop0): using free space tree [ 50.886084][ T5154] BTRFS info (device loop0): has skinny extents [ 50.898492][ T5154] FAULT_INJECTION: forcing a failure. [ 50.898492][ T5154] name failslab, interval 1, probability 0, space 0, times 0 [ 50.904324][ T5154] CPU: 1 PID: 5154 Comm: syz-executor.0 Tainted: G W syzkaller #0 [ 50.905558][ T5154] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/02/2026 [ 50.906985][ T5154] Call trace: [ 50.907426][ T5154] dump_backtrace+0x0/0x458 [ 50.908040][ T5154] show_stack+0x2c/0x3c [ 50.908582][ T5154] __dump_stack+0x30/0x40 [ 50.909194][ T5154] dump_stack_lvl+0xf4/0x15c [ 50.909875][ T5154] dump_stack+0x1c/0x5c [ 50.910487][ T5154] should_fail+0x3c8/0x520 [ 50.911140][ T5154] __should_failslab+0xbc/0x10c [ 50.911806][ T5154] should_failslab+0x10/0x28 [ 50.912493][ T5154] slab_pre_alloc_hook+0x64/0xe8 [ 50.913212][ T5154] kmem_cache_alloc+0x94/0x3d8 [ 50.913908][ T5154] btrfs_alloc_tree_block+0x9dc/0x10f0 [ 50.914635][ T5154] btrfs_force_cow_block+0x3ac/0x172c [ 50.915368][ T5154] btrfs_cow_block+0x2d4/0x674 [ 50.916035][ T5154] btrfs_search_slot+0xa10/0x1ec8 [ 50.916687][ T5154] btrfs_insert_empty_items+0x1e8/0x2b0 [ 50.917377][ T5154] btrfs_insert_inode_ref+0x150/0xa24 [ 50.918080][ T5154] btrfs_add_link+0x244/0xac8 [ 50.918704][ T5154] btrfs_link+0x3a4/0x67c [ 50.919306][ T5154] vfs_link+0x5b4/0x748 [ 50.919871][ T5154] do_linkat+0x248/0x754 [ 50.920434][ T5154] __arm64_sys_linkat+0xec/0x108 [ 50.921161][ T5154] invoke_syscall+0x98/0x28c [ 50.921816][ T5154] el0_svc_common+0x13c/0x258 [ 50.922433][ T5154] do_el0_svc+0x5c/0x140 [ 50.923063][ T5154] el0_svc+0x78/0x1d0 [ 50.923630][ T5154] el0t_64_sync_handler+0xcc/0xe4 [ 50.924392][ T5154] el0t_64_sync+0x1a0/0x1a4 [ 50.958059][ T4255] ------------[ cut here ]------------ [ 50.958854][ T4255] WARNING: CPU: 0 PID: 4255 at fs/btrfs/space-info.h:110 btrfs_space_info_update_bytes_may_use+0x2b8/0x664 [ 50.960650][ T4255] Modules linked in: [ 50.961265][ T4255] CPU: 0 PID: 4255 Comm: syz-executor.0 Tainted: G W syzkaller #0 [ 50.962671][ T4255] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/02/2026 [ 50.963985][ T4255] pstate: 82400005 (Nzcv daif +PAN -UAO +TCO -DIT -SSBS BTYPE=--) [ 50.965013][ T4255] pc : btrfs_space_info_update_bytes_may_use+0x2b8/0x664 [ 50.966028][ T4255] lr : btrfs_space_info_update_bytes_may_use+0x2b4/0x664 [ 50.967082][ T4255] sp : ffff80001f2d7740 [ 50.967728][ T4255] x29: ffff80001f2d7750 x28: 0000000000000000 x27: 1fffe0001a742c0c [ 50.969064][ T4255] x26: dfff800000000000 x25: ffff80001438d110 x24: 0000000000000001 [ 50.970383][ T4255] x23: 0000000000000005 x22: 00000000000d0000 x21: 00000000000cf000 [ 50.971543][ T4255] x20: ffff0000d3a16060 x19: 0000000000000000 x18: 0000000000000000 [ 50.972684][ T4255] x17: 0000000000000000 x16: ffff80001134e478 x15: 0000000000000000 [ 50.973828][ T4255] x14: ffff700003e5aedc x13: 1ffff00003e5aedc x12: 0000000000000004 [ 50.975016][ T4255] x11: ff8080000a08c7a4 x10: 0000000000000000 x9 : ffff80000a08c7a4 [ 50.976096][ T4255] x8 : ffff0000ced51b40 x7 : ffff80000a08ba74 x6 : 0000000000000000 [ 50.977219][ T4255] x5 : 0000000000000000 x4 : 0000000000000001 x3 : ffff8000082db960 [ 50.978380][ T4255] x2 : fffffffffff30000 x1 : 00000000000d0000 x0 : 00000000000cf000 [ 50.979585][ T4255] Call trace: [ 50.980026][ T4255] btrfs_space_info_update_bytes_may_use+0x2b8/0x664 [ 50.981026][ T4255] btrfs_block_rsv_release+0x3bc/0x498 [ 50.981907][ T4255] btrfs_release_global_block_rsv+0x38/0x22c [ 50.982794][ T4255] btrfs_free_block_groups+0x7b8/0xb20 [ 50.983599][ T4255] close_ctree+0x62c/0x848 [ 50.984284][ T4255] btrfs_put_super+0x40/0x50 [ 50.984936][ T4255] generic_shutdown_super+0x138/0x2f8 [ 50.985773][ T4255] kill_anon_super+0x4c/0x80 [ 50.986468][ T4255] btrfs_kill_super+0x44/0x5c [ 50.987143][ T4255] deactivate_locked_super+0xc0/0x13c [ 50.988039][ T4255] deactivate_super+0xf0/0x110 [ 50.988746][ T4255] cleanup_mnt+0x3bc/0x470 [ 50.989381][ T4255] __cleanup_mnt+0x20/0x30 [ 50.990007][ T4255] task_work_run+0x13c/0x1e8 [ 50.990672][ T4255] do_notify_resume+0x2488/0x30a8 [ 50.991387][ T4255] el0_svc+0xf0/0x1d0 [ 50.992016][ T4255] el0t_64_sync_handler+0xcc/0xe4 [ 50.992762][ T4255] el0t_64_sync+0x1a0/0x1a4 [ 50.993357][ T4255] irq event stamp: 1053300 [ 50.993999][ T4255] hardirqs last enabled at (1053299): [] kasan_quarantine_put+0xc4/0x200 [ 50.995353][ T4255] hardirqs last disabled at (1053300): [] el1_dbg+0x24/0x80 [ 50.996668][ T4255] softirqs last enabled at (1049790): [] local_bh_enable+0x10/0x34 [ 50.998057][ T4255] softirqs last disabled at (1049788): [] local_bh_disable+0x10/0x34 [ 50.999475][ T4255] ---[ end trace 89e47276819b71da ]--- [ 51.152168][ T5175] BTRFS: device fsid 24c7a497-3402-47dd-bef8-82358f5f30e0 devid 1 transid 8 /dev/loop0 scanned by syz-executor.0 (5175) [ 51.156561][ T5175] BTRFS info (device loop0): using crc32c (crc32c-generic) checksum algorithm [ 51.157940][ T5175] BTRFS info (device loop0): setting nodatasum [ 51.158866][ T5175] BTRFS info (device loop0): enabling ssd optimizations [ 51.160238][ T5175] BTRFS info (device loop0): max_inline at 0 [ 51.161117][ T5175] BTRFS info (device loop0): using free space tree [ 51.162122][ T5175] BTRFS info (device loop0): has skinny extents [ 51.176505][ T5175] FAULT_INJECTION: forcing a failure. [ 51.176505][ T5175] name failslab, interval 1, probability 0, space 0, times 0 [ 51.178372][ T5175] CPU: 1 PID: 5175 Comm: syz-executor.0 Tainted: G W syzkaller #0 [ 51.179554][ T5175] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/02/2026 [ 51.180850][ T5175] Call trace: [ 51.181280][ T5175] dump_backtrace+0x0/0x458 [ 51.181927][ T5175] show_stack+0x2c/0x3c [ 51.182499][ T5175] __dump_stack+0x30/0x40 [ 51.183159][ T5175] dump_stack_lvl+0xf4/0x15c [ 51.183777][ T5175] dump_stack+0x1c/0x5c [ 51.184358][ T5175] should_fail+0x3c8/0x520 [ 51.184959][ T5175] __should_failslab+0xbc/0x10c [ 51.185685][ T5175] should_failslab+0x10/0x28 [ 51.186281][ T5175] slab_pre_alloc_hook+0x64/0xe8 [ 51.187083][ T5175] kmem_cache_alloc+0x94/0x3d8 [ 51.187777][ T5175] btrfs_alloc_tree_block+0x9dc/0x10f0 [ 51.188532][ T5175] btrfs_force_cow_block+0x3ac/0x172c [ 51.189241][ T5175] btrfs_cow_block+0x2d4/0x674 [ 51.189847][ T5175] btrfs_search_slot+0xa10/0x1ec8 [ 51.190569][ T5175] btrfs_insert_empty_items+0x1e8/0x2b0 [ 51.191308][ T5175] btrfs_insert_inode_ref+0x150/0xa24 [ 51.192024][ T5175] btrfs_add_link+0x244/0xac8 [ 51.192632][ T5175] btrfs_link+0x3a4/0x67c [ 51.193161][ T5175] vfs_link+0x5b4/0x748 [ 51.193673][ T5175] do_linkat+0x248/0x754 [ 51.194208][ T5175] __arm64_sys_linkat+0xec/0x108 [ 51.194840][ T5175] invoke_syscall+0x98/0x28c [ 51.195445][ T5175] el0_svc_common+0x13c/0x258 [ 51.196060][ T5175] do_el0_svc+0x5c/0x140 [ 51.196683][ T5175] el0_svc+0x78/0x1d0 [ 51.197279][ T5175] el0t_64_sync_handler+0xcc/0xe4 [ 51.197920][ T5175] el0t_64_sync+0x1a0/0x1a4 1970/01/01 00:00:51 executed programs: 32 [ 51.232449][ T4255] ------------[ cut here ]------------ [ 51.233307][ T4255] WARNING: CPU: 1 PID: 4255 at fs/btrfs/space-info.h:110 btrfs_space_info_update_bytes_may_use+0x2b8/0x664 [ 51.234937][ T4255] Modules linked in: [ 51.235455][ T4255] CPU: 1 PID: 4255 Comm: syz-executor.0 Tainted: G W syzkaller #0 [ 51.236700][ T4255] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/02/2026 [ 51.238143][ T4255] pstate: 82400005 (Nzcv daif +PAN -UAO +TCO -DIT -SSBS BTYPE=--) [ 51.239324][ T4255] pc : btrfs_space_info_update_bytes_may_use+0x2b8/0x664 [ 51.240335][ T4255] lr : btrfs_space_info_update_bytes_may_use+0x2b4/0x664 [ 51.241300][ T4255] sp : ffff80001f2d7740 [ 51.241908][ T4255] x29: ffff80001f2d7750 x28: 0000000000000000 x27: 1fffe0001931540c [ 51.243040][ T4255] x26: dfff800000000000 x25: ffff80001438d110 x24: 0000000000000002 [ 51.244189][ T4255] x23: 0000000000000005 x22: 00000000000d0000 x21: 00000000000cf000 [ 51.245336][ T4255] x20: ffff0000c98aa060 x19: 0000000000000000 x18: 0000000000000000 [ 51.246374][ T4255] x17: 0000000000000000 x16: ffff80001134e478 x15: 0000000000000000 [ 51.247517][ T4255] x14: ffff700003e5aedc x13: 1ffff00003e5aedc x12: 0000000000000004 [ 51.248683][ T4255] x11: ff8080000a08c7a4 x10: 0000000000000000 x9 : ffff80000a08c7a4 [ 51.249766][ T4255] x8 : ffff0000ced51b40 x7 : ffff80000a08ba74 x6 : 0000000000000000 [ 51.250974][ T4255] x5 : 0000000000000000 x4 : 0000000000000001 x3 : ffff8000082db960 [ 51.252054][ T4255] x2 : fffffffffff30000 x1 : 00000000000d0000 x0 : 00000000000cf000 [ 51.253167][ T4255] Call trace: [ 51.253636][ T4255] btrfs_space_info_update_bytes_may_use+0x2b8/0x664 [ 51.254629][ T4255] btrfs_block_rsv_release+0x3bc/0x498 [ 51.255457][ T4255] btrfs_release_global_block_rsv+0x38/0x22c [ 51.256281][ T4255] btrfs_free_block_groups+0x7b8/0xb20 [ 51.256997][ T4255] close_ctree+0x62c/0x848 [ 51.257672][ T4255] btrfs_put_super+0x40/0x50 [ 51.258309][ T4255] generic_shutdown_super+0x138/0x2f8 [ 51.259034][ T4255] kill_anon_super+0x4c/0x80 [ 51.259737][ T4255] btrfs_kill_super+0x44/0x5c [ 51.260405][ T4255] deactivate_locked_super+0xc0/0x13c [ 51.261210][ T4255] deactivate_super+0xf0/0x110 [ 51.261929][ T4255] cleanup_mnt+0x3bc/0x470 [ 51.262522][ T4255] __cleanup_mnt+0x20/0x30 [ 51.263143][ T4255] task_work_run+0x13c/0x1e8 [ 51.263787][ T4255] do_notify_resume+0x2488/0x30a8 [ 51.264516][ T4255] el0_svc+0xf0/0x1d0 [ 51.265091][ T4255] el0t_64_sync_handler+0xcc/0xe4 [ 51.265750][ T4255] el0t_64_sync+0x1a0/0x1a4 [ 51.266398][ T4255] irq event stamp: 1082574 [ 51.267037][ T4255] hardirqs last enabled at (1082573): [] kasan_quarantine_put+0xc4/0x200 [ 51.268428][ T4255] hardirqs last disabled at (1082574): [] el1_dbg+0x24/0x80 [ 51.269642][ T4255] softirqs last enabled at (1081168): [] handle_softirqs+0xa70/0xc14 [ 51.270990][ T4255] softirqs last disabled at (1081029): [] __irq_exit_rcu+0x240/0x434 [ 51.272346][ T4255] ---[ end trace 89e47276819b71db ]--- [ 51.429489][ T5196] BTRFS: device fsid 24c7a497-3402-47dd-bef8-82358f5f30e0 devid 1 transid 8 /dev/loop0 scanned by syz-executor.0 (5196) [ 51.438595][ T5196] BTRFS info (device loop0): using crc32c (crc32c-generic) checksum algorithm [ 51.440081][ T5196] BTRFS info (device loop0): setting nodatasum [ 51.441047][ T5196] BTRFS info (device loop0): enabling ssd optimizations [ 51.441977][ T5196] BTRFS info (device loop0): max_inline at 0 [ 51.442784][ T5196] BTRFS info (device loop0): using free space tree [ 51.443740][ T5196] BTRFS info (device loop0): has skinny extents [ 51.458549][ T5196] FAULT_INJECTION: forcing a failure. [ 51.458549][ T5196] name failslab, interval 1, probability 0, space 0, times 0 [ 51.460460][ T5196] CPU: 1 PID: 5196 Comm: syz-executor.0 Tainted: G W syzkaller #0 [ 51.461819][ T5196] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/02/2026 [ 51.463228][ T5196] Call trace: [ 51.463690][ T5196] dump_backtrace+0x0/0x458 [ 51.464318][ T5196] show_stack+0x2c/0x3c [ 51.464872][ T5196] __dump_stack+0x30/0x40 [ 51.465480][ T5196] dump_stack_lvl+0xf4/0x15c [ 51.466115][ T5196] dump_stack+0x1c/0x5c [ 51.466702][ T5196] should_fail+0x3c8/0x520 [ 51.467281][ T5196] __should_failslab+0xbc/0x10c [ 51.467911][ T5196] should_failslab+0x10/0x28 [ 51.468575][ T5196] slab_pre_alloc_hook+0x64/0xe8 [ 51.469266][ T5196] kmem_cache_alloc+0x94/0x3d8 [ 51.469955][ T5196] btrfs_alloc_tree_block+0x9dc/0x10f0 [ 51.470796][ T5196] btrfs_force_cow_block+0x3ac/0x172c [ 51.471567][ T5196] btrfs_cow_block+0x2d4/0x674 [ 51.472320][ T5196] btrfs_search_slot+0xa10/0x1ec8 [ 51.473033][ T5196] btrfs_insert_empty_items+0x1e8/0x2b0 [ 51.473850][ T5196] btrfs_insert_inode_ref+0x150/0xa24 [ 51.474620][ T5196] btrfs_add_link+0x244/0xac8 [ 51.475269][ T5196] btrfs_link+0x3a4/0x67c [ 51.475957][ T5196] vfs_link+0x5b4/0x748 [ 51.476578][ T5196] do_linkat+0x248/0x754 [ 51.477258][ T5196] __arm64_sys_linkat+0xec/0x108 [ 51.478158][ T5196] invoke_syscall+0x98/0x28c [ 51.478768][ T5196] el0_svc_common+0x13c/0x258 [ 51.479421][ T5196] do_el0_svc+0x5c/0x140 [ 51.479979][ T5196] el0_svc+0x78/0x1d0 [ 51.480515][ T5196] el0t_64_sync_handler+0xcc/0xe4 [ 51.481222][ T5196] el0t_64_sync+0x1a0/0x1a4 [ 51.515755][ T4255] ------------[ cut here ]------------ [ 51.516570][ T4255] WARNING: CPU: 0 PID: 4255 at fs/btrfs/space-info.h:110 btrfs_space_info_update_bytes_may_use+0x2b8/0x664 [ 51.518210][ T4255] Modules linked in: [ 51.518879][ T4255] CPU: 0 PID: 4255 Comm: syz-executor.0 Tainted: G W syzkaller #0 [ 51.520127][ T4255] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/02/2026 [ 51.521494][ T4255] pstate: 82400005 (Nzcv daif +PAN -UAO +TCO -DIT -SSBS BTYPE=--) [ 51.522568][ T4255] pc : btrfs_space_info_update_bytes_may_use+0x2b8/0x664 [ 51.523540][ T4255] lr : btrfs_space_info_update_bytes_may_use+0x2b4/0x664 [ 51.524529][ T4255] sp : ffff80001f2d7740 [ 51.525090][ T4255] x29: ffff80001f2d7750 x28: 0000000000000000 x27: 1fffe0001ac0fc0c [ 51.526277][ T4255] x26: dfff800000000000 x25: ffff80001438d110 x24: 0000000000000001 [ 51.527406][ T4255] x23: 0000000000000005 x22: 00000000000d0000 x21: 00000000000cf000 [ 51.528531][ T4255] x20: ffff0000d607e060 x19: 0000000000000000 x18: 0000000000000000 [ 51.529643][ T4255] x17: 0000000000000000 x16: ffff80001134e478 x15: 0000000000000000 [ 51.530880][ T4255] x14: ffff700003e5aedc x13: 1ffff00003e5aedc x12: 0000000000000004 [ 51.532063][ T4255] x11: ff8080000a08c7a4 x10: 0000000000000000 x9 : ffff80000a08c7a4 [ 51.533187][ T4255] x8 : ffff0000ced51b40 x7 : ffff80000a08ba74 x6 : 0000000000000000 [ 51.534365][ T4255] x5 : 0000000000000000 x4 : 0000000000000001 x3 : ffff8000082db960 [ 51.535359][ T4255] x2 : fffffffffff30000 x1 : 00000000000d0000 x0 : 00000000000cf000 [ 51.536574][ T4255] Call trace: [ 51.537030][ T4255] btrfs_space_info_update_bytes_may_use+0x2b8/0x664 [ 51.537911][ T4255] btrfs_block_rsv_release+0x3bc/0x498 [ 51.538673][ T4255] btrfs_release_global_block_rsv+0x38/0x22c [ 51.539499][ T4255] btrfs_free_block_groups+0x7b8/0xb20 [ 51.540237][ T4255] close_ctree+0x62c/0x848 [ 51.540885][ T4255] btrfs_put_super+0x40/0x50 [ 51.541537][ T4255] generic_shutdown_super+0x138/0x2f8 [ 51.542235][ T4255] kill_anon_super+0x4c/0x80 [ 51.542840][ T4255] btrfs_kill_super+0x44/0x5c [ 51.543488][ T4255] deactivate_locked_super+0xc0/0x13c [ 51.544194][ T4255] deactivate_super+0xf0/0x110 [ 51.544908][ T4255] cleanup_mnt+0x3bc/0x470 [ 51.545519][ T4255] __cleanup_mnt+0x20/0x30 [ 51.546106][ T4255] task_work_run+0x13c/0x1e8 [ 51.546712][ T4255] do_notify_resume+0x2488/0x30a8 [ 51.547353][ T4255] el0_svc+0xf0/0x1d0 [ 51.547969][ T4255] el0t_64_sync_handler+0xcc/0xe4 [ 51.548717][ T4255] el0t_64_sync+0x1a0/0x1a4 [ 51.549308][ T4255] irq event stamp: 1112174 [ 51.549923][ T4255] hardirqs last enabled at (1112173): [] kasan_quarantine_put+0xc4/0x200 [ 51.551273][ T4255] hardirqs last disabled at (1112174): [] el1_dbg+0x24/0x80 [ 51.552378][ T4255] softirqs last enabled at (1109720): [] handle_softirqs+0xa70/0xc14 [ 51.553692][ T4255] softirqs last disabled at (1109643): [] __irq_exit_rcu+0x240/0x434 [ 51.555034][ T4255] ---[ end trace 89e47276819b71dc ]--- [ 51.705546][ T5217] BTRFS: device fsid 24c7a497-3402-47dd-bef8-82358f5f30e0 devid 1 transid 8 /dev/loop0 scanned by syz-executor.0 (5217) [ 51.709961][ T5217] BTRFS info (device loop0): using crc32c (crc32c-generic) checksum algorithm [ 51.711335][ T5217] BTRFS info (device loop0): setting nodatasum [ 51.712247][ T5217] BTRFS info (device loop0): enabling ssd optimizations [ 51.713367][ T5217] BTRFS info (device loop0): max_inline at 0 [ 51.714190][ T5217] BTRFS info (device loop0): using free space tree [ 51.715308][ T5217] BTRFS info (device loop0): has skinny extents [ 51.730305][ T5217] FAULT_INJECTION: forcing a failure. [ 51.730305][ T5217] name failslab, interval 1, probability 0, space 0, times 0 [ 51.732360][ T5217] CPU: 0 PID: 5217 Comm: syz-executor.0 Tainted: G W syzkaller #0 [ 51.733631][ T5217] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/02/2026 [ 51.734926][ T5217] Call trace: [ 51.735408][ T5217] dump_backtrace+0x0/0x458 [ 51.736003][ T5217] show_stack+0x2c/0x3c [ 51.736583][ T5217] __dump_stack+0x30/0x40 [ 51.737183][ T5217] dump_stack_lvl+0xf4/0x15c [ 51.737837][ T5217] dump_stack+0x1c/0x5c [ 51.738442][ T5217] should_fail+0x3c8/0x520 [ 51.739052][ T5217] __should_failslab+0xbc/0x10c [ 51.739763][ T5217] should_failslab+0x10/0x28 [ 51.740420][ T5217] slab_pre_alloc_hook+0x64/0xe8 [ 51.741069][ T5217] kmem_cache_alloc+0x94/0x3d8 [ 51.741726][ T5217] btrfs_add_delayed_tree_ref+0x1b0/0xda4 [ 51.742564][ T5217] btrfs_alloc_tree_block+0xb2c/0x10f0 [ 51.743274][ T5217] btrfs_force_cow_block+0x3ac/0x172c [ 51.744034][ T5217] btrfs_cow_block+0x2d4/0x674 [ 51.744702][ T5217] btrfs_search_slot+0xa10/0x1ec8 [ 51.745385][ T5217] btrfs_insert_empty_items+0x1e8/0x2b0 [ 51.746110][ T5217] btrfs_insert_inode_ref+0x150/0xa24 [ 51.746836][ T5217] btrfs_add_link+0x244/0xac8 [ 51.747444][ T5217] btrfs_link+0x3a4/0x67c [ 51.748011][ T5217] vfs_link+0x5b4/0x748 [ 51.748584][ T5217] do_linkat+0x248/0x754 [ 51.749136][ T5217] __arm64_sys_linkat+0xec/0x108 [ 51.749772][ T5217] invoke_syscall+0x98/0x28c [ 51.750388][ T5217] el0_svc_common+0x13c/0x258 [ 51.750992][ T5217] do_el0_svc+0x5c/0x140 [ 51.751634][ T5217] el0_svc+0x78/0x1d0 [ 51.752208][ T5217] el0t_64_sync_handler+0xcc/0xe4 [ 51.752917][ T5217] el0t_64_sync+0x1a0/0x1a4 [ 51.787115][ T4255] ------------[ cut here ]------------ [ 51.788013][ T4255] WARNING: CPU: 0 PID: 4255 at fs/btrfs/space-info.h:110 btrfs_space_info_update_bytes_may_use+0x2b8/0x664 [ 51.789674][ T4255] Modules linked in: [ 51.790261][ T4255] CPU: 0 PID: 4255 Comm: syz-executor.0 Tainted: G W syzkaller #0 [ 51.791619][ T4255] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/02/2026 [ 51.792983][ T4255] pstate: 82400005 (Nzcv daif +PAN -UAO +TCO -DIT -SSBS BTYPE=--) [ 51.794108][ T4255] pc : btrfs_space_info_update_bytes_may_use+0x2b8/0x664 [ 51.795111][ T4255] lr : btrfs_space_info_update_bytes_may_use+0x2b4/0x664 [ 51.796172][ T4255] sp : ffff80001f2d7740 [ 51.796831][ T4255] x29: ffff80001f2d7750 x28: 0000000000000000 x27: 1fffe000181c120c [ 51.797994][ T4255] x26: dfff800000000000 x25: ffff80001438d110 x24: 0000000000000001 [ 51.799157][ T4255] x23: 0000000000000005 x22: 00000000000d0000 x21: 00000000000cf000 [ 51.800262][ T4255] x20: ffff0000c0e09060 x19: 0000000000000000 x18: 0000000000000000 [ 51.801484][ T4255] x17: 0000000000000000 x16: ffff80001134e478 x15: 0000000000000000 [ 51.802645][ T4255] x14: ffff700003e5aedc x13: 1ffff00003e5aedc x12: 0000000000000004 [ 51.803773][ T4255] x11: ff8080000a08c7a4 x10: 0000000000000000 x9 : ffff80000a08c7a4 [ 51.804960][ T4255] x8 : ffff0000ced51b40 x7 : ffff80000a08ba74 x6 : 0000000000000000 [ 51.806159][ T4255] x5 : 0000000000000000 x4 : 0000000000000001 x3 : ffff8000082db960 [ 51.807369][ T4255] x2 : fffffffffff30000 x1 : 00000000000d0000 x0 : 00000000000cf000 [ 51.808518][ T4255] Call trace: [ 51.808992][ T4255] btrfs_space_info_update_bytes_may_use+0x2b8/0x664 [ 51.809961][ T4255] btrfs_block_rsv_release+0x3bc/0x498 [ 51.810707][ T4255] btrfs_release_global_block_rsv+0x38/0x22c [ 51.811538][ T4255] btrfs_free_block_groups+0x7b8/0xb20 [ 51.812384][ T4255] close_ctree+0x62c/0x848 [ 51.813086][ T4255] btrfs_put_super+0x40/0x50 [ 51.813715][ T4255] generic_shutdown_super+0x138/0x2f8 [ 51.814462][ T4255] kill_anon_super+0x4c/0x80 [ 51.815190][ T4255] btrfs_kill_super+0x44/0x5c [ 51.815918][ T4255] deactivate_locked_super+0xc0/0x13c [ 51.816718][ T4255] deactivate_super+0xf0/0x110 [ 51.817453][ T4255] cleanup_mnt+0x3bc/0x470 [ 51.818162][ T4255] __cleanup_mnt+0x20/0x30 [ 51.818802][ T4255] task_work_run+0x13c/0x1e8 [ 51.819461][ T4255] do_notify_resume+0x2488/0x30a8 [ 51.820143][ T4255] el0_svc+0xf0/0x1d0 [ 51.820686][ T4255] el0t_64_sync_handler+0xcc/0xe4 [ 51.821412][ T4255] el0t_64_sync+0x1a0/0x1a4 [ 51.822013][ T4255] irq event stamp: 1141900 [ 51.822601][ T4255] hardirqs last enabled at (1141899): [] kasan_quarantine_put+0xc4/0x200 [ 51.824039][ T4255] hardirqs last disabled at (1141900): [] el1_dbg+0x24/0x80 [ 51.825438][ T4255] softirqs last enabled at (1138258): [] local_bh_enable+0x10/0x34 [ 51.826817][ T4255] softirqs last disabled at (1138256): [] local_bh_disable+0x10/0x34 [ 51.828154][ T4255] ---[ end trace 89e47276819b71dd ]--- [ 51.965644][ T5238] BTRFS: device fsid 24c7a497-3402-47dd-bef8-82358f5f30e0 devid 1 transid 8 /dev/loop0 scanned by syz-executor.0 (5238) [ 51.969559][ T5238] BTRFS info (device loop0): using crc32c (crc32c-generic) checksum algorithm [ 51.971100][ T5238] BTRFS info (device loop0): setting nodatasum [ 51.971981][ T5238] BTRFS info (device loop0): enabling ssd optimizations [ 51.973026][ T5238] BTRFS info (device loop0): max_inline at 0 [ 52.000503][ T5238] FAULT_INJECTION: forcing a failure. [ 52.000503][ T5238] name failslab, interval 1, probability 0, space 0, times 0 [ 52.002510][ T5238] CPU: 0 PID: 5238 Comm: syz-executor.0 Tainted: G W syzkaller #0 [ 52.003684][ T5238] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/02/2026 [ 52.005105][ T5238] Call trace: [ 52.005527][ T5238] dump_backtrace+0x0/0x458 [ 52.006187][ T5238] show_stack+0x2c/0x3c [ 52.006784][ T5238] __dump_stack+0x30/0x40 [ 52.007589][ T5238] dump_stack_lvl+0xf4/0x15c [ 52.008211][ T5238] dump_stack+0x1c/0x5c [ 52.008734][ T5238] should_fail+0x3c8/0x520 [ 52.009323][ T5238] __should_failslab+0xbc/0x10c [ 52.009954][ T5238] should_failslab+0x10/0x28 [ 52.010568][ T5238] slab_pre_alloc_hook+0x64/0xe8 [ 52.011267][ T5238] kmem_cache_alloc+0x94/0x3d8 [ 52.011914][ T5238] btrfs_add_delayed_tree_ref+0x1b0/0xda4 [ 52.012699][ T5238] btrfs_alloc_tree_block+0xb2c/0x10f0 [ 52.013435][ T5238] btrfs_force_cow_block+0x3ac/0x172c [ 52.014166][ T5238] btrfs_cow_block+0x2d4/0x674 [ 52.014778][ T5238] btrfs_search_slot+0xa10/0x1ec8 [ 52.015412][ T5238] btrfs_insert_empty_items+0x1e8/0x2b0 [ 52.016096][ T5238] btrfs_insert_inode_ref+0x150/0xa24 [ 52.016801][ T5238] btrfs_add_link+0x244/0xac8 [ 52.017435][ T5238] btrfs_link+0x3a4/0x67c [ 52.018034][ T5238] vfs_link+0x5b4/0x748 [ 52.018557][ T5238] do_linkat+0x248/0x754 [ 52.019120][ T5238] __arm64_sys_linkat+0xec/0x108 [ 52.019764][ T5238] invoke_syscall+0x98/0x28c [ 52.020363][ T5238] el0_svc_common+0x13c/0x258 [ 52.021014][ T5238] do_el0_svc+0x5c/0x140 [ 52.021602][ T5238] el0_svc+0x78/0x1d0 [ 52.022088][ T5238] el0t_64_sync_handler+0xcc/0xe4 [ 52.022894][ T5238] el0t_64_sync+0x1a0/0x1a4 [ 52.054618][ T4255] ------------[ cut here ]------------ [ 52.055482][ T4255] WARNING: CPU: 0 PID: 4255 at fs/btrfs/space-info.h:110 btrfs_space_info_update_bytes_may_use+0x2b8/0x664 [ 52.056948][ T4255] Modules linked in: [ 52.057483][ T4255] CPU: 0 PID: 4255 Comm: syz-executor.0 Tainted: G W syzkaller #0 [ 52.058665][ T4255] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/02/2026 [ 52.059922][ T4255] pstate: 82400005 (Nzcv daif +PAN -UAO +TCO -DIT -SSBS BTYPE=--) [ 52.060975][ T4255] pc : btrfs_space_info_update_bytes_may_use+0x2b8/0x664 [ 52.061962][ T4255] lr : btrfs_space_info_update_bytes_may_use+0x2b4/0x664 [ 52.062886][ T4255] sp : ffff80001f2d7740 [ 52.063368][ T4255] x29: ffff80001f2d7750 x28: 0000000000000000 x27: 1fffe0001acea10c [ 52.064491][ T4255] x26: dfff800000000000 x25: ffff80001438d110 x24: 0000000000000001 [ 52.065686][ T4255] x23: 0000000000000005 x22: 00000000000d0000 x21: 00000000000cf000 [ 52.066813][ T4255] x20: ffff0000d6750860 x19: 0000000000000000 x18: 0000000000000000 [ 52.067915][ T4255] x17: 0000000000000000 x16: ffff80001134e478 x15: 0000000000000000 [ 52.068972][ T4255] x14: ffff700003e5aedc x13: 1ffff00003e5aedc x12: 0000000000000004 [ 52.070101][ T4255] x11: ff8080000a08c7a4 x10: 0000000000000000 x9 : ffff80000a08c7a4 [ 52.071161][ T4255] x8 : ffff0000ced51b40 x7 : ffff80000a08ba74 x6 : 0000000000000000 [ 52.072178][ T4255] x5 : 0000000000000000 x4 : 0000000000000001 x3 : ffff8000082db960 [ 52.073214][ T4255] x2 : fffffffffff30000 x1 : 00000000000d0000 x0 : 00000000000cf000 [ 52.074309][ T4255] Call trace: [ 52.074753][ T4255] btrfs_space_info_update_bytes_may_use+0x2b8/0x664 [ 52.075706][ T4255] btrfs_block_rsv_release+0x3bc/0x498 [ 52.076455][ T4255] btrfs_release_global_block_rsv+0x38/0x22c [ 52.077233][ T4255] btrfs_free_block_groups+0x7b8/0xb20 [ 52.078001][ T4255] close_ctree+0x62c/0x848 [ 52.078601][ T4255] btrfs_put_super+0x40/0x50 [ 52.079263][ T4255] generic_shutdown_super+0x138/0x2f8 [ 52.080016][ T4255] kill_anon_super+0x4c/0x80 [ 52.080664][ T4255] btrfs_kill_super+0x44/0x5c [ 52.081247][ T4255] deactivate_locked_super+0xc0/0x13c [ 52.082018][ T4255] deactivate_super+0xf0/0x110 [ 52.082735][ T4255] cleanup_mnt+0x3bc/0x470 [ 52.083359][ T4255] __cleanup_mnt+0x20/0x30 [ 52.084013][ T4255] task_work_run+0x13c/0x1e8 [ 52.084613][ T4255] do_notify_resume+0x2488/0x30a8 [ 52.085320][ T4255] el0_svc+0xf0/0x1d0 [ 52.085893][ T4255] el0t_64_sync_handler+0xcc/0xe4 [ 52.086615][ T4255] el0t_64_sync+0x1a0/0x1a4 [ 52.087250][ T4255] irq event stamp: 1170926 [ 52.087898][ T4255] hardirqs last enabled at (1170925): [] kasan_quarantine_put+0xc4/0x200 [ 52.089227][ T4255] hardirqs last disabled at (1170926): [] el1_dbg+0x24/0x80 [ 52.090538][ T4255] softirqs last enabled at (1170318): [] handle_softirqs+0xa70/0xc14 [ 52.091803][ T4255] softirqs last disabled at (1169979): [] __irq_exit_rcu+0x240/0x434 [ 52.093097][ T4255] ---[ end trace 89e47276819b71de ]--- [ 52.235942][ T5260] BTRFS: device fsid 24c7a497-3402-47dd-bef8-82358f5f30e0 devid 1 transid 8 /dev/loop0 scanned by syz-executor.0 (5260) [ 52.262953][ T5260] FAULT_INJECTION: forcing a failure. [ 52.262953][ T5260] name failslab, interval 1, probability 0, space 0, times 0 [ 52.264972][ T5260] CPU: 0 PID: 5260 Comm: syz-executor.0 Tainted: G W syzkaller #0 [ 52.266189][ T5260] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/02/2026 [ 52.267495][ T5260] Call trace: [ 52.267918][ T5260] dump_backtrace+0x0/0x458 [ 52.268503][ T5260] show_stack+0x2c/0x3c [ 52.269141][ T5260] __dump_stack+0x30/0x40 [ 52.269794][ T5260] dump_stack_lvl+0xf4/0x15c [ 52.270376][ T5260] dump_stack+0x1c/0x5c [ 52.270948][ T5260] should_fail+0x3c8/0x520 [ 52.271507][ T5260] __should_failslab+0xbc/0x10c [ 52.272206][ T5260] should_failslab+0x10/0x28 [ 52.272834][ T5260] slab_pre_alloc_hook+0x64/0xe8 [ 52.273510][ T5260] kmem_cache_alloc+0x94/0x3d8 [ 52.274162][ T5260] btrfs_add_delayed_tree_ref+0x194/0xda4 [ 52.274891][ T5260] btrfs_alloc_tree_block+0xb2c/0x10f0 [ 52.275674][ T5260] btrfs_force_cow_block+0x3ac/0x172c [ 52.276413][ T5260] btrfs_cow_block+0x2d4/0x674 [ 52.277087][ T5260] btrfs_search_slot+0xa10/0x1ec8 [ 52.277739][ T5260] btrfs_insert_empty_items+0x1e8/0x2b0 [ 52.278508][ T5260] btrfs_insert_inode_ref+0x150/0xa24 [ 52.279211][ T5260] btrfs_add_link+0x244/0xac8 [ 52.279912][ T5260] btrfs_link+0x3a4/0x67c [ 52.280532][ T5260] vfs_link+0x5b4/0x748 [ 52.281145][ T5260] do_linkat+0x248/0x754 [ 52.281735][ T5260] __arm64_sys_linkat+0xec/0x108 [ 52.282398][ T5260] invoke_syscall+0x98/0x28c [ 52.282993][ T5260] el0_svc_common+0x13c/0x258 [ 52.283637][ T5260] do_el0_svc+0x5c/0x140 [ 52.284231][ T5260] el0_svc+0x78/0x1d0 [ 52.284779][ T5260] el0t_64_sync_handler+0xcc/0xe4 [ 52.285515][ T5260] el0t_64_sync+0x1a0/0x1a4 [ 52.318774][ T4255] ------------[ cut here ]------------ [ 52.319660][ T4255] WARNING: CPU: 1 PID: 4255 at fs/btrfs/space-info.h:110 btrfs_space_info_update_bytes_may_use+0x2b8/0x664 [ 52.321500][ T4255] Modules linked in: [ 52.322072][ T4255] CPU: 1 PID: 4255 Comm: syz-executor.0 Tainted: G W syzkaller #0 [ 52.323382][ T4255] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/02/2026 [ 52.324770][ T4255] pstate: 82400005 (Nzcv daif +PAN -UAO +TCO -DIT -SSBS BTYPE=--) [ 52.325857][ T4255] pc : btrfs_space_info_update_bytes_may_use+0x2b8/0x664 [ 52.326836][ T4255] lr : btrfs_space_info_update_bytes_may_use+0x2b4/0x664 [ 52.327829][ T4255] sp : ffff80001f2d7740 [ 52.328384][ T4255] x29: ffff80001f2d7750 x28: 0000000000000000 x27: 1fffe0001a1d240c [ 52.329634][ T4255] x26: dfff800000000000 x25: ffff80001438d110 x24: 0000000000000002 [ 52.330789][ T4255] x23: 0000000000000005 x22: 00000000000d0000 x21: 00000000000cf000 [ 52.331933][ T4255] x20: ffff0000d0e92060 x19: 0000000000000000 x18: 0000000000000000 [ 52.333081][ T4255] x17: 0000000000000000 x16: ffff80001134e478 x15: 0000000000000000 [ 52.334317][ T4255] x14: ffff700003e5aedc x13: 1ffff00003e5aedc x12: 0000000000000004 [ 52.335391][ T4255] x11: ff8080000a08c7a4 x10: 0000000000000000 x9 : ffff80000a08c7a4 [ 52.336537][ T4255] x8 : ffff0000ced51b40 x7 : ffff80000a08ba74 x6 : 0000000000000000 [ 52.337750][ T4255] x5 : 0000000000000000 x4 : 0000000000000001 x3 : ffff8000082db960 [ 52.338883][ T4255] x2 : fffffffffff30000 x1 : 00000000000d0000 x0 : 00000000000cf000 [ 52.340056][ T4255] Call trace: [ 52.340525][ T4255] btrfs_space_info_update_bytes_may_use+0x2b8/0x664 [ 52.341514][ T4255] btrfs_block_rsv_release+0x3bc/0x498 [ 52.342371][ T4255] btrfs_release_global_block_rsv+0x38/0x22c [ 52.343215][ T4255] btrfs_free_block_groups+0x7b8/0xb20 [ 52.344001][ T4255] close_ctree+0x62c/0x848 [ 52.344689][ T4255] btrfs_put_super+0x40/0x50 [ 52.345326][ T4255] generic_shutdown_super+0x138/0x2f8 [ 52.346023][ T4255] kill_anon_super+0x4c/0x80 [ 52.346659][ T4255] btrfs_kill_super+0x44/0x5c [ 52.347305][ T4255] deactivate_locked_super+0xc0/0x13c [ 52.348042][ T4255] deactivate_super+0xf0/0x110 [ 52.348749][ T4255] cleanup_mnt+0x3bc/0x470 [ 52.349387][ T4255] __cleanup_mnt+0x20/0x30 [ 52.350019][ T4255] task_work_run+0x13c/0x1e8 [ 52.350682][ T4255] do_notify_resume+0x2488/0x30a8 [ 52.351404][ T4255] el0_svc+0xf0/0x1d0 [ 52.351980][ T4255] el0t_64_sync_handler+0xcc/0xe4 [ 52.352683][ T4255] el0t_64_sync+0x1a0/0x1a4 [ 52.353403][ T4255] irq event stamp: 1199840 [ 52.354092][ T4255] hardirqs last enabled at (1199839): [] kasan_quarantine_put+0xc4/0x200 [ 52.355604][ T4255] hardirqs last disabled at (1199840): [] el1_dbg+0x24/0x80 [ 52.356846][ T4255] softirqs last enabled at (1196216): [] local_bh_enable+0x10/0x34 [ 52.358119][ T4255] softirqs last disabled at (1196214): [] local_bh_disable+0x10/0x34 [ 52.359434][ T4255] ---[ end trace 89e47276819b71df ]--- [ 52.510238][ T5281] BTRFS: device fsid 24c7a497-3402-47dd-bef8-82358f5f30e0 devid 1 transid 8 /dev/loop0 scanned by syz-executor.0 (5281) [ 52.528269][ T5281] FAULT_INJECTION: forcing a failure. [ 52.528269][ T5281] name failslab, interval 1, probability 0, space 0, times 0 [ 52.530890][ T5281] CPU: 1 PID: 5281 Comm: syz-executor.0 Tainted: G W syzkaller #0 [ 52.532115][ T5281] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/02/2026 [ 52.533444][ T5281] Call trace: [ 52.533880][ T5281] dump_backtrace+0x0/0x458 [ 52.534490][ T5281] show_stack+0x2c/0x3c [ 52.535045][ T5281] __dump_stack+0x30/0x40 [ 52.535709][ T5281] dump_stack_lvl+0xf4/0x15c [ 52.536372][ T5281] dump_stack+0x1c/0x5c [ 52.536978][ T5281] should_fail+0x3c8/0x520 [ 52.537579][ T5281] __should_failslab+0xbc/0x10c [ 52.538200][ T5281] should_failslab+0x10/0x28 [ 52.538849][ T5281] slab_pre_alloc_hook+0x64/0xe8 [ 52.539674][ T5281] kmem_cache_alloc+0x94/0x3d8 [ 52.540427][ T5281] btrfs_add_delayed_tree_ref+0x194/0xda4 [ 52.541344][ T5281] btrfs_alloc_tree_block+0xb2c/0x10f0 [ 52.542060][ T5281] btrfs_force_cow_block+0x3ac/0x172c [ 52.542830][ T5281] btrfs_cow_block+0x2d4/0x674 [ 52.543567][ T5281] btrfs_search_slot+0xa10/0x1ec8 [ 52.544288][ T5281] btrfs_insert_empty_items+0x1e8/0x2b0 [ 52.545069][ T5281] btrfs_insert_inode_ref+0x150/0xa24 [ 52.545827][ T5281] btrfs_add_link+0x244/0xac8 [ 52.546451][ T5281] btrfs_link+0x3a4/0x67c [ 52.547053][ T5281] vfs_link+0x5b4/0x748 [ 52.547580][ T5281] do_linkat+0x248/0x754 [ 52.548162][ T5281] __arm64_sys_linkat+0xec/0x108 [ 52.548814][ T5281] invoke_syscall+0x98/0x28c [ 52.549510][ T5281] el0_svc_common+0x13c/0x258 [ 52.550138][ T5281] do_el0_svc+0x5c/0x140 [ 52.550741][ T5281] el0_svc+0x78/0x1d0 [ 52.551338][ T5281] el0t_64_sync_handler+0xcc/0xe4 [ 52.552037][ T5281] el0t_64_sync+0x1a0/0x1a4 [ 52.586381][ T4255] ------------[ cut here ]------------ [ 52.587220][ T4255] WARNING: CPU: 1 PID: 4255 at fs/btrfs/space-info.h:110 btrfs_space_info_update_bytes_may_use+0x2b8/0x664 [ 52.588831][ T4255] Modules linked in: [ 52.589440][ T4255] CPU: 1 PID: 4255 Comm: syz-executor.0 Tainted: G W syzkaller #0 [ 52.590701][ T4255] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/02/2026 [ 52.591972][ T4255] pstate: 82400005 (Nzcv daif +PAN -UAO +TCO -DIT -SSBS BTYPE=--) [ 52.593004][ T4255] pc : btrfs_space_info_update_bytes_may_use+0x2b8/0x664 [ 52.594046][ T4255] lr : btrfs_space_info_update_bytes_may_use+0x2b4/0x664 [ 52.595030][ T4255] sp : ffff80001f2d7740 [ 52.595536][ T4255] x29: ffff80001f2d7750 x28: 0000000000000000 x27: 1fffe00018b98d0c [ 52.596668][ T4255] x26: dfff800000000000 x25: ffff80001438d110 x24: 0000000000000002 [ 52.597750][ T4255] x23: 0000000000000005 x22: 00000000000d0000 x21: 00000000000cf000 [ 52.598881][ T4255] x20: ffff0000c5cc6860 x19: 0000000000000000 x18: 0000000000000000 [ 52.599974][ T4255] x17: 0000000000000000 x16: ffff80001134e478 x15: 0000000000000000 [ 52.601124][ T4255] x14: ffff700003e5aedc x13: 1ffff00003e5aedc x12: 0000000000000004 [ 52.602248][ T4255] x11: ff8080000a08c7a4 x10: 0000000000000000 x9 : ffff80000a08c7a4 [ 52.603267][ T4255] x8 : ffff0000ced51b40 x7 : ffff80000a08ba74 x6 : 0000000000000000 [ 52.604521][ T4255] x5 : 0000000000000000 x4 : 0000000000000001 x3 : ffff8000082db960 [ 52.605631][ T4255] x2 : fffffffffff30000 x1 : 00000000000d0000 x0 : 00000000000cf000 [ 52.606809][ T4255] Call trace: [ 52.607289][ T4255] btrfs_space_info_update_bytes_may_use+0x2b8/0x664 [ 52.608166][ T4255] btrfs_block_rsv_release+0x3bc/0x498 [ 52.608933][ T4255] btrfs_release_global_block_rsv+0x38/0x22c [ 52.609783][ T4255] btrfs_free_block_groups+0x7b8/0xb20 [ 52.610591][ T4255] close_ctree+0x62c/0x848 [ 52.611234][ T4255] btrfs_put_super+0x40/0x50 [ 52.611909][ T4255] generic_shutdown_super+0x138/0x2f8 [ 52.612698][ T4255] kill_anon_super+0x4c/0x80 [ 52.613338][ T4255] btrfs_kill_super+0x44/0x5c [ 52.613948][ T4255] deactivate_locked_super+0xc0/0x13c [ 52.614653][ T4255] deactivate_super+0xf0/0x110 [ 52.615325][ T4255] cleanup_mnt+0x3bc/0x470 [ 52.615917][ T4255] __cleanup_mnt+0x20/0x30 [ 52.616569][ T4255] task_work_run+0x13c/0x1e8 [ 52.617239][ T4255] do_notify_resume+0x2488/0x30a8 [ 52.617935][ T4255] el0_svc+0xf0/0x1d0 [ 52.618522][ T4255] el0t_64_sync_handler+0xcc/0xe4 [ 52.619230][ T4255] el0t_64_sync+0x1a0/0x1a4 [ 52.619801][ T4255] irq event stamp: 1228992 [ 52.620379][ T4255] hardirqs last enabled at (1228991): [] kasan_quarantine_put+0xc4/0x200 [ 52.621789][ T4255] hardirqs last disabled at (1228992): [] el1_dbg+0x24/0x80 [ 52.623009][ T4255] softirqs last enabled at (1226738): [] handle_softirqs+0xa70/0xc14 [ 52.624345][ T4255] softirqs last disabled at (1226563): [] __irq_exit_rcu+0x240/0x434 [ 52.625634][ T4255] ---[ end trace 89e47276819b71e0 ]--- [ 52.835748][ T5302] set_capacity_and_notify: 9 callbacks suppressed [ 52.835757][ T5302] loop0: detected capacity change from 0 to 32768 [ 52.848318][ T5302] BTRFS: device fsid 24c7a497-3402-47dd-bef8-82358f5f30e0 devid 1 transid 8 /dev/loop0 scanned by syz-executor.0 (5302) [ 52.852218][ T5302] btrfs_printk: 14 callbacks suppressed [ 52.852225][ T5302] BTRFS info (device loop0): using crc32c (crc32c-generic) checksum algorithm [ 52.854296][ T5302] BTRFS info (device loop0): setting nodatasum [ 52.855141][ T5302] BTRFS info (device loop0): enabling ssd optimizations [ 52.856048][ T5302] BTRFS info (device loop0): max_inline at 0 [ 52.856921][ T5302] BTRFS info (device loop0): using free space tree [ 52.857849][ T5302] BTRFS info (device loop0): has skinny extents