[ 35.660544][ T1677] netdevsim netdevsim0 netdevsim3 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 37.798686][ T1677] netdevsim netdevsim0 netdevsim2 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 37.838698][ T1677] netdevsim netdevsim0 netdevsim1 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 37.879824][ T1677] netdevsim netdevsim0 netdevsim0 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 39.048947][ T1677] device hsr_slave_0 left promiscuous mode [ 39.105638][ T1677] device hsr_slave_1 left promiscuous mode [ 39.205798][ T1677] batman_adv: batadv0: Interface deactivated: batadv_slave_0 [ 39.207161][ T1677] batman_adv: batadv0: Removing interface: batadv_slave_0 [ 39.209202][ T1677] batman_adv: batadv0: Interface deactivated: batadv_slave_1 [ 39.210381][ T1677] batman_adv: batadv0: Removing interface: batadv_slave_1 [ 39.211764][ T1677] device bridge_slave_1 left promiscuous mode [ 39.213067][ T1677] bridge0: port 2(bridge_slave_1) entered disabled state [ 39.257250][ T1677] device bridge_slave_0 left promiscuous mode [ 39.258380][ T1677] bridge0: port 1(bridge_slave_0) entered disabled state [ 39.395720][ T1677] device veth1_macvtap left promiscuous mode [ 39.396917][ T1677] device veth0_macvtap left promiscuous mode [ 39.397904][ T1677] device veth1_vlan left promiscuous mode [ 39.398969][ T1677] device veth0_vlan left promiscuous mode [ 39.481243][ T1677] team0 (unregistering): Port device team_slave_1 removed [ 39.485201][ T1677] team0 (unregistering): Port device team_slave_0 removed [ 39.489415][ T1677] bond0 (unregistering): (slave bond_slave_1): Releasing backup interface [ 39.529704][ T1677] bond0 (unregistering): (slave bond_slave_0): Releasing backup interface [ 39.638482][ T1677] bond0 (unregistering): Released all slaves Warning: Permanently added '10.128.0.240' (ED25519) to the list of known hosts. 1970/01/01 00:00:39 ignoring optional flag "type"="gce" 1970/01/01 00:00:40 parsed 1 programs [ 40.135860][ T4247] Adding 124996k swap on ./swap-file. Priority:0 extents:1 across:124996k SSFS 1970/01/01 00:00:40 executed programs: 0 [ 40.199652][ T4254] chnl_net:caif_netlink_parms(): no params data found [ 40.217487][ T4254] bridge0: port 1(bridge_slave_0) entered blocking state [ 40.218944][ T4254] bridge0: port 1(bridge_slave_0) entered disabled state [ 40.220717][ T4254] device bridge_slave_0 entered promiscuous mode [ 40.222759][ T4254] bridge0: port 2(bridge_slave_1) entered blocking state [ 40.223961][ T4254] bridge0: port 2(bridge_slave_1) entered disabled state [ 40.226068][ T4254] device bridge_slave_1 entered promiscuous mode [ 40.233865][ T4254] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 40.236629][ T4254] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 40.243977][ T4254] team0: Port device team_slave_0 added [ 40.246375][ T4254] team0: Port device team_slave_1 added [ 40.253316][ T4254] batman_adv: batadv0: Adding interface: batadv_slave_0 [ 40.254564][ T4254] 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. [ 40.259748][ T4254] batman_adv: batadv0: Not using interface batadv_slave_0 (retrying later): interface not active [ 40.262187][ T4254] batman_adv: batadv0: Adding interface: batadv_slave_1 [ 40.263320][ T4254] 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. [ 40.267924][ T4254] batman_adv: batadv0: Not using interface batadv_slave_1 (retrying later): interface not active [ 40.337606][ T4254] device hsr_slave_0 entered promiscuous mode [ 40.385844][ T4254] device hsr_slave_1 entered promiscuous mode [ 40.986455][ T4254] netdevsim netdevsim0 netdevsim0: renamed from eth0 [ 41.027244][ T4254] netdevsim netdevsim0 netdevsim1: renamed from eth1 [ 41.067374][ T4254] netdevsim netdevsim0 netdevsim2: renamed from eth2 [ 41.117452][ T4254] netdevsim netdevsim0 netdevsim3: renamed from eth3 [ 41.194192][ T4254] 8021q: adding VLAN 0 to HW filter on device bond0 [ 41.199038][ T148] IPv6: ADDRCONF(NETDEV_CHANGE): veth1: link becomes ready [ 41.200570][ T148] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 41.203484][ T4254] 8021q: adding VLAN 0 to HW filter on device team0 [ 41.215600][ T136] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bridge: link becomes ready [ 41.217344][ T136] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 41.219116][ T136] bridge0: port 1(bridge_slave_0) entered blocking state [ 41.220265][ T136] bridge0: port 1(bridge_slave_0) entered forwarding state [ 41.222377][ T136] IPv6: ADDRCONF(NETDEV_CHANGE): bridge0: link becomes ready [ 41.226613][ T148] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bridge: link becomes ready [ 41.228250][ T148] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 41.229788][ T148] bridge0: port 2(bridge_slave_1) entered blocking state [ 41.231075][ T148] bridge0: port 2(bridge_slave_1) entered forwarding state [ 41.234925][ T148] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bond: link becomes ready [ 41.242171][ T148] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bond: link becomes ready [ 41.245350][ T148] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_team: link becomes ready [ 41.248362][ T148] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 41.253617][ T148] IPv6: ADDRCONF(NETDEV_CHANGE): team0: link becomes ready [ 41.255418][ T148] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_team: link becomes ready [ 41.257792][ T148] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 41.259492][ T148] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_hsr: link becomes ready [ 41.261164][ T148] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 41.263641][ T148] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_hsr: link becomes ready [ 41.265105][ T148] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 41.268195][ T4254] IPv6: ADDRCONF(NETDEV_CHANGE): hsr0: link becomes ready [ 41.312483][ T4254] 8021q: adding VLAN 0 to HW filter on device batadv0 [ 41.316370][ T148] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan1: link becomes ready [ 41.317638][ T148] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan0: link becomes ready [ 41.322249][ T148] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_virt_wifi: link becomes ready [ 41.324001][ T148] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_virt_wifi: link becomes ready [ 41.331853][ T148] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_vlan: link becomes ready [ 41.333478][ T148] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_vlan: link becomes ready [ 41.335405][ T148] IPv6: ADDRCONF(NETDEV_CHANGE): vlan0: link becomes ready [ 41.337762][ T148] IPv6: ADDRCONF(NETDEV_CHANGE): vlan1: link becomes ready [ 41.340425][ T4254] device veth0_vlan entered promiscuous mode [ 41.343766][ T4254] device veth1_vlan entered promiscuous mode [ 41.352089][ T148] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan0: link becomes ready [ 41.353630][ T148] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan1: link becomes ready [ 41.355117][ T148] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_macvtap: link becomes ready [ 41.357915][ T148] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_macvtap: link becomes ready [ 41.361018][ T4254] device veth0_macvtap entered promiscuous mode [ 41.363452][ T4254] device veth1_macvtap entered promiscuous mode [ 41.370397][ T4254] batman_adv: batadv0: Interface activated: batadv_slave_0 [ 41.371751][ T148] IPv6: ADDRCONF(NETDEV_CHANGE): macvtap0: link becomes ready [ 41.373341][ T148] IPv6: ADDRCONF(NETDEV_CHANGE): macsec0: link becomes ready [ 41.374865][ T148] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_0: link becomes ready [ 41.377557][ T148] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_batadv: link becomes ready [ 41.381180][ T4254] batman_adv: batadv0: Interface activated: batadv_slave_1 [ 41.383155][ T148] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_1: link becomes ready [ 41.384759][ T148] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_batadv: link becomes ready [ 41.388962][ T4254] netdevsim netdevsim0 netdevsim0: set [1, 0] type 2 family 0 port 6081 - 0 [ 41.390476][ T4254] netdevsim netdevsim0 netdevsim1: set [1, 0] type 2 family 0 port 6081 - 0 [ 41.391797][ T4254] netdevsim netdevsim0 netdevsim2: set [1, 0] type 2 family 0 port 6081 - 0 [ 41.393268][ T4254] netdevsim netdevsim0 netdevsim3: set [1, 0] type 2 family 0 port 6081 - 0 [ 41.524132][ T4375] loop0: detected capacity change from 0 to 32768 [ 41.530383][ T4375] BTRFS: device fsid a6a605fc-d5f1-4e66-8595-3726e2b761d6 devid 1 transid 8 /dev/loop0 scanned by syz-executor.0 (4375) [ 41.538864][ T4375] BTRFS info (device loop0): using blake2b (blake2b-256-generic) checksum algorithm [ 41.540768][ T4375] BTRFS info (device loop0): using free space tree [ 41.541977][ T4375] BTRFS info (device loop0): has skinny extents [ 41.610925][ T4375] BTRFS info (device loop0): enabling ssd optimizations [ 41.619232][ T4375] FAULT_INJECTION: forcing a failure. [ 41.619232][ T4375] name failslab, interval 1, probability 0, space 0, times 1 [ 41.629480][ T4375] CPU: 0 PID: 4375 Comm: syz-executor.0 Not tainted syzkaller #0 [ 41.630851][ T4375] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/02/2026 [ 41.632998][ T4375] Call trace: [ 41.633674][ T4375] dump_backtrace+0x0/0x458 [ 41.634690][ T4375] show_stack+0x2c/0x3c [ 41.635536][ T4375] __dump_stack+0x30/0x40 [ 41.636385][ T4375] dump_stack_lvl+0xf4/0x15c [ 41.637303][ T4375] dump_stack+0x1c/0x5c [ 41.638125][ T4375] should_fail+0x3c8/0x520 [ 41.639009][ T4375] __should_failslab+0xbc/0x10c [ 41.639912][ T4375] should_failslab+0x10/0x28 [ 41.640788][ T4375] slab_pre_alloc_hook+0x64/0xe8 [ 41.641715][ T4375] kmem_cache_alloc_trace+0x98/0x3f0 [ 41.642762][ T4375] btrfs_alloc_root+0x8c/0x9e0 [ 41.643615][ T4375] btrfs_create_tree+0x110/0x9b4 [ 41.644486][ T4375] btrfs_quota_enable+0x370/0x1904 [ 41.645391][ T4375] btrfs_ioctl_quota_ctl+0x13c/0x180 [ 41.646315][ T4375] btrfs_ioctl+0x96c/0xa8c [ 41.647087][ T4375] __arm64_sys_ioctl+0x14c/0x1c8 [ 41.647981][ T4375] invoke_syscall+0x98/0x28c [ 41.648814][ T4375] el0_svc_common+0x13c/0x258 [ 41.649669][ T4375] do_el0_svc+0x5c/0x140 [ 41.650450][ T4375] el0_svc+0x78/0x1d0 [ 41.651170][ T4375] el0t_64_sync_handler+0xcc/0xe4 [ 41.652077][ T4375] el0t_64_sync+0x1a0/0x1a4 [ 41.658010][ T4375] ------------[ cut here ]------------ [ 41.659565][ T4375] WARNING: CPU: 0 PID: 4375 at fs/btrfs/qgroup.c:1009 btrfs_quota_enable+0x1100/0x1904 [ 41.661323][ T4375] Modules linked in: [ 41.662095][ T4375] CPU: 0 PID: 4375 Comm: syz-executor.0 Not tainted syzkaller #0 [ 41.663593][ T4375] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/02/2026 [ 41.665620][ T4375] pstate: 62400005 (nZCv daif +PAN -UAO +TCO -DIT -SSBS BTYPE=--) [ 41.667110][ T4375] pc : btrfs_quota_enable+0x1100/0x1904 [ 41.668158][ T4375] lr : btrfs_quota_enable+0x1100/0x1904 [ 41.669113][ T4375] sp : ffff80001fc67ae0 [ 41.669837][ T4375] x29: ffff80001fc67c40 x28: 0000000000001798 x27: ffff0000de5900b0 [ 41.671309][ T4375] x26: dfff800000000000 x25: fffffffffffffff4 x24: ffff0000c12cc000 [ 41.672721][ T4375] x23: ffff0000ca63e000 x22: ffff700003f8cf6c x21: 1fffe0001bcb2021 [ 41.674149][ T4375] x20: ffff0000de590108 x19: ffff0000d56a4000 x18: 0000000000000002 [ 41.675506][ T4375] x17: 0000000040000000 x16: ffff80001134e478 x15: 0000000000000002 [ 41.676943][ T4375] x14: 0000000000000001 x13: 1fffe000341cebab x12: 0000000000000000 [ 41.678346][ T4375] x11: ff8080000830061c x10: 0000000000000000 x9 : 30d2ab3431ed2c00 [ 41.679759][ T4375] x8 : 30d2ab3431ed2c00 x7 : 0000000000000000 x6 : 0000000000000000 [ 41.681166][ T4375] x5 : 0000000000000080 x4 : 0000000000000000 x3 : ffff80000850f688 [ 41.682631][ T4375] x2 : 0000000000000001 x1 : 0000000100000000 x0 : 0000000000000026 [ 41.684127][ T4375] Call trace: [ 41.684708][ T4375] btrfs_quota_enable+0x1100/0x1904 [ 41.685828][ T4375] btrfs_ioctl_quota_ctl+0x13c/0x180 [ 41.686839][ T4375] btrfs_ioctl+0x96c/0xa8c [ 41.687726][ T4375] __arm64_sys_ioctl+0x14c/0x1c8 [ 41.688639][ T4375] invoke_syscall+0x98/0x28c [ 41.689451][ T4375] el0_svc_common+0x13c/0x258 [ 41.690292][ T4375] do_el0_svc+0x5c/0x140 [ 41.691038][ T4375] el0_svc+0x78/0x1d0 [ 41.691724][ T4375] el0t_64_sync_handler+0xcc/0xe4 [ 41.692771][ T4375] el0t_64_sync+0x1a0/0x1a4 [ 41.693705][ T4375] irq event stamp: 81192 [ 41.694578][ T4375] hardirqs last enabled at (81191): [] finish_lock_switch+0xb0/0x1c8 [ 41.696602][ T4375] hardirqs last disabled at (81192): [] el1_dbg+0x24/0x80 [ 41.698202][ T4375] softirqs last enabled at (81164): [] handle_softirqs+0xa70/0xc14 [ 41.699818][ T4375] softirqs last disabled at (81143): [] __irq_exit_rcu+0x240/0x434 [ 41.701511][ T4375] ---[ end trace ddfcf5910ad65cf1 ]--- [ 41.705128][ T4375] BTRFS: error (device loop0) in btrfs_quota_enable:1009: errno=-12 Out of memory [ 41.707584][ T4375] BTRFS info (device loop0): forced readonly [ 41.910625][ T4452] loop0: detected capacity change from 0 to 32768 [ 41.913822][ T4452] BTRFS: device fsid a6a605fc-d5f1-4e66-8595-3726e2b761d6 devid 1 transid 8 /dev/loop0 scanned by syz-executor.0 (4452) [ 41.922854][ T4452] BTRFS info (device loop0): using blake2b (blake2b-256-generic) checksum algorithm [ 41.924663][ T4452] BTRFS info (device loop0): using free space tree [ 41.926211][ T4452] BTRFS info (device loop0): has skinny extents [ 41.983346][ T4452] BTRFS info (device loop0): enabling ssd optimizations [ 41.987903][ T4452] FAULT_INJECTION: forcing a failure. [ 41.987903][ T4452] name failslab, interval 1, probability 0, space 0, times 0 [ 41.990309][ T4452] CPU: 0 PID: 4452 Comm: syz-executor.0 Tainted: G W syzkaller #0 [ 41.991800][ T4452] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/02/2026 [ 41.993604][ T4452] Call trace: [ 41.994164][ T4452] dump_backtrace+0x0/0x458 [ 41.995007][ T4452] show_stack+0x2c/0x3c [ 41.995791][ T4452] __dump_stack+0x30/0x40 [ 41.996627][ T4452] dump_stack_lvl+0xf4/0x15c [ 41.997441][ T4452] dump_stack+0x1c/0x5c [ 41.998198][ T4452] should_fail+0x3c8/0x520 [ 41.999145][ T4452] __should_failslab+0xbc/0x10c [ 42.000046][ T4452] should_failslab+0x10/0x28 [ 42.000896][ T4452] slab_pre_alloc_hook+0x64/0xe8 [ 42.001785][ T4452] kmem_cache_alloc_trace+0x98/0x3f0 [ 42.002724][ T4452] btrfs_alloc_root+0x8c/0x9e0 [ 42.003704][ T4452] btrfs_create_tree+0x110/0x9b4 [ 42.004700][ T4452] btrfs_quota_enable+0x370/0x1904 [ 42.005641][ T4452] btrfs_ioctl_quota_ctl+0x13c/0x180 [ 42.006602][ T4452] btrfs_ioctl+0x96c/0xa8c [ 42.007394][ T4452] __arm64_sys_ioctl+0x14c/0x1c8 [ 42.008267][ T4452] invoke_syscall+0x98/0x28c [ 42.009087][ T4452] el0_svc_common+0x13c/0x258 [ 42.009962][ T4452] do_el0_svc+0x5c/0x140 [ 42.010717][ T4452] el0_svc+0x78/0x1d0 [ 42.011414][ T4452] el0t_64_sync_handler+0xcc/0xe4 [ 42.012448][ T4452] el0t_64_sync+0x1a0/0x1a4 [ 42.023324][ T4452] ------------[ cut here ]------------ [ 42.024446][ T4452] WARNING: CPU: 0 PID: 4452 at fs/btrfs/qgroup.c:1009 btrfs_quota_enable+0x1100/0x1904 [ 42.026216][ T4452] Modules linked in: [ 42.026867][ T4452] CPU: 0 PID: 4452 Comm: syz-executor.0 Tainted: G W syzkaller #0 [ 42.028519][ T4452] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/02/2026 [ 42.030283][ T4452] pstate: 62400005 (nZCv daif +PAN -UAO +TCO -DIT -SSBS BTYPE=--) [ 42.031695][ T4452] pc : btrfs_quota_enable+0x1100/0x1904 [ 42.032632][ T4452] lr : btrfs_quota_enable+0x1100/0x1904 [ 42.033803][ T4452] sp : ffff80001fb47ae0 [ 42.034666][ T4452] x29: ffff80001fb47c40 x28: 0000000000001798 x27: ffff0000de590210 [ 42.036352][ T4452] x26: dfff800000000000 x25: fffffffffffffff4 x24: ffff0000c853a000 [ 42.038042][ T4452] x23: ffff0000c5dff700 x22: ffff700003f68f6c x21: 1fffe0001bcb204d [ 42.039813][ T4452] x20: ffff0000de590268 x19: ffff0000db384000 x18: 0000000000000000 [ 42.041531][ T4452] x17: 0000000000000000 x16: ffff80001134e478 x15: 0000000000000000 [ 42.043235][ T4452] x14: 0000000000000001 x13: 1fffe000341cebab x12: 0000000000000000 [ 42.044724][ T4452] x11: ff8080000830061c x10: 0000000000000000 x9 : f43dc8def637ff00 [ 42.046137][ T4452] x8 : f43dc8def637ff00 x7 : 0000000000000001 x6 : 0000000000000001 [ 42.047527][ T4452] x5 : ffff80001fb473f8 x4 : ffff80001446f500 x3 : ffff80000850f688 [ 42.048954][ T4452] x2 : 0000000000000001 x1 : 0000000100000000 x0 : 0000000000000026 [ 42.050353][ T4452] Call trace: [ 42.051052][ T4452] btrfs_quota_enable+0x1100/0x1904 [ 42.052095][ T4452] btrfs_ioctl_quota_ctl+0x13c/0x180 [ 42.053090][ T4452] btrfs_ioctl+0x96c/0xa8c [ 42.053911][ T4452] __arm64_sys_ioctl+0x14c/0x1c8 [ 42.054790][ T4452] invoke_syscall+0x98/0x28c [ 42.055622][ T4452] el0_svc_common+0x13c/0x258 [ 42.056482][ T4452] do_el0_svc+0x5c/0x140 [ 42.057210][ T4452] el0_svc+0x78/0x1d0 [ 42.057934][ T4452] el0t_64_sync_handler+0xcc/0xe4 [ 42.058854][ T4452] el0t_64_sync+0x1a0/0x1a4 [ 42.059622][ T4452] irq event stamp: 79414 [ 42.060379][ T4452] hardirqs last enabled at (79413): [] __up_console_sem+0xb4/0xfc [ 42.062152][ T4452] hardirqs last disabled at (79414): [] el1_dbg+0x24/0x80 [ 42.063684][ T4452] softirqs last enabled at (79394): [] handle_softirqs+0xa70/0xc14 [ 42.065489][ T4452] softirqs last disabled at (79319): [] __irq_exit_rcu+0x240/0x434 [ 42.067224][ T4452] ---[ end trace ddfcf5910ad65cf2 ]--- [ 42.071487][ T4452] BTRFS: error (device loop0) in btrfs_quota_enable:1009: errno=-12 Out of memory [ 42.073391][ T4452] BTRFS info (device loop0): forced readonly [ 42.186120][ T4430] Bluetooth: hci0: command 0x0409 tx timeout [ 42.269281][ T4528] loop0: detected capacity change from 0 to 32768 [ 42.281196][ T4528] BTRFS: device fsid a6a605fc-d5f1-4e66-8595-3726e2b761d6 devid 1 transid 8 /dev/loop0 scanned by syz-executor.0 (4528) [ 42.288636][ T4528] BTRFS info (device loop0): using blake2b (blake2b-256-generic) checksum algorithm [ 42.290272][ T4528] BTRFS info (device loop0): using free space tree [ 42.291442][ T4528] BTRFS info (device loop0): has skinny extents [ 42.349572][ T4528] BTRFS info (device loop0): enabling ssd optimizations [ 42.353217][ T4528] FAULT_INJECTION: forcing a failure. [ 42.353217][ T4528] name failslab, interval 1, probability 0, space 0, times 0 [ 42.355480][ T4528] CPU: 0 PID: 4528 Comm: syz-executor.0 Tainted: G W syzkaller #0 [ 42.357241][ T4528] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/02/2026 [ 42.359163][ T4528] Call trace: [ 42.359789][ T4528] dump_backtrace+0x0/0x458 [ 42.360671][ T4528] show_stack+0x2c/0x3c [ 42.361395][ T4528] __dump_stack+0x30/0x40 [ 42.362151][ T4528] dump_stack_lvl+0xf4/0x15c [ 42.362965][ T4528] dump_stack+0x1c/0x5c [ 42.363697][ T4528] should_fail+0x3c8/0x520 [ 42.364487][ T4528] __should_failslab+0xbc/0x10c [ 42.365341][ T4528] should_failslab+0x10/0x28 [ 42.366198][ T4528] slab_pre_alloc_hook+0x64/0xe8 [ 42.367099][ T4528] kmem_cache_alloc_trace+0x98/0x3f0 [ 42.368039][ T4528] btrfs_alloc_root+0x8c/0x9e0 [ 42.368942][ T4528] btrfs_create_tree+0x110/0x9b4 [ 42.369914][ T4528] btrfs_quota_enable+0x370/0x1904 [ 42.370791][ T4528] btrfs_ioctl_quota_ctl+0x13c/0x180 [ 42.371700][ T4528] btrfs_ioctl+0x96c/0xa8c [ 42.372511][ T4528] __arm64_sys_ioctl+0x14c/0x1c8 [ 42.373402][ T4528] invoke_syscall+0x98/0x28c [ 42.374224][ T4528] el0_svc_common+0x13c/0x258 [ 42.375053][ T4528] do_el0_svc+0x5c/0x140 [ 42.375796][ T4528] el0_svc+0x78/0x1d0 [ 42.376516][ T4528] el0t_64_sync_handler+0xcc/0xe4 [ 42.377417][ T4528] el0t_64_sync+0x1a0/0x1a4 [ 42.378391][ T4528] ------------[ cut here ]------------ [ 42.379468][ T4528] WARNING: CPU: 0 PID: 4528 at fs/btrfs/qgroup.c:1009 btrfs_quota_enable+0x1100/0x1904 [ 42.381240][ T4528] Modules linked in: [ 42.382045][ T4528] CPU: 0 PID: 4528 Comm: syz-executor.0 Tainted: G W syzkaller #0 [ 42.383834][ T4528] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/02/2026 [ 42.385674][ T4528] pstate: 62400005 (nZCv daif +PAN -UAO +TCO -DIT -SSBS BTYPE=--) [ 42.387140][ T4528] pc : btrfs_quota_enable+0x1100/0x1904 [ 42.388191][ T4528] lr : btrfs_quota_enable+0x1100/0x1904 [ 42.389212][ T4528] sp : ffff800020197ae0 [ 42.389984][ T4528] x29: ffff800020197c40 x28: 0000000000001798 x27: ffff0000de590370 [ 42.391503][ T4528] x26: dfff800000000000 x25: fffffffffffffff4 x24: ffff0000cbaf2000 [ 42.393001][ T4528] x23: ffff0000d7fdcd00 x22: ffff700004032f6c x21: 1fffe0001bcb2079 [ 42.394504][ T4528] x20: ffff0000de5903c8 x19: ffff0000d7fd8000 x18: 0000000000000000 [ 42.396012][ T4528] x17: 0000000000000000 x16: ffff8000082c63e0 x15: 0000000000000000 [ 42.397783][ T4528] x14: 0000000000000001 x13: 1ffff00004032e7c x12: 0000000000000000 [ 42.399494][ T4528] x11: ff8080000830061c x10: 0000000000000000 x9 : 0a4b2468a0a88a00 [ 42.400825][ T4528] x8 : 0a4b2468a0a88a00 x7 : 0000000000000001 x6 : 0000000000000001 [ 42.402268][ T4528] x5 : ffff8000201973f8 x4 : ffff80001446f500 x3 : ffff800008307f44 [ 42.403699][ T4528] x2 : 0000000000000001 x1 : 0000000100000000 x0 : 0000000000000026 [ 42.405172][ T4528] Call trace: [ 42.405748][ T4528] btrfs_quota_enable+0x1100/0x1904 [ 42.406713][ T4528] btrfs_ioctl_quota_ctl+0x13c/0x180 [ 42.407690][ T4528] btrfs_ioctl+0x96c/0xa8c [ 42.408557][ T4528] __arm64_sys_ioctl+0x14c/0x1c8 [ 42.409407][ T4528] invoke_syscall+0x98/0x28c [ 42.410190][ T4528] el0_svc_common+0x13c/0x258 [ 42.410966][ T4528] do_el0_svc+0x5c/0x140 [ 42.411733][ T4528] el0_svc+0x78/0x1d0 [ 42.412449][ T4528] el0t_64_sync_handler+0xcc/0xe4 [ 42.413516][ T4528] el0t_64_sync+0x1a0/0x1a4 [ 42.414461][ T4528] irq event stamp: 79082 [ 42.415354][ T4528] hardirqs last enabled at (79081): [] __up_console_sem+0xb4/0xfc [ 42.417282][ T4528] hardirqs last disabled at (79082): [] el1_dbg+0x24/0x80 [ 42.418955][ T4528] softirqs last enabled at (79062): [] handle_softirqs+0xa70/0xc14 [ 42.420813][ T4528] softirqs last disabled at (79045): [] __irq_exit_rcu+0x240/0x434 [ 42.422562][ T4528] ---[ end trace ddfcf5910ad65cf3 ]--- [ 42.424258][ T4528] BTRFS: error (device loop0) in btrfs_quota_enable:1009: errno=-12 Out of memory [ 42.428694][ T4528] BTRFS info (device loop0): forced readonly [ 42.629229][ T4586] loop0: detected capacity change from 0 to 32768 [ 42.633590][ T4586] BTRFS: device fsid a6a605fc-d5f1-4e66-8595-3726e2b761d6 devid 1 transid 8 /dev/loop0 scanned by syz-executor.0 (4586) [ 42.645700][ T4586] BTRFS info (device loop0): using blake2b (blake2b-256-generic) checksum algorithm [ 42.647441][ T4586] BTRFS info (device loop0): using free space tree [ 42.648592][ T4586] BTRFS info (device loop0): has skinny extents [ 42.661412][ T4586] BTRFS info (device loop0): enabling ssd optimizations [ 42.665186][ T4586] FAULT_INJECTION: forcing a failure. [ 42.665186][ T4586] name failslab, interval 1, probability 0, space 0, times 0 [ 42.669102][ T4586] CPU: 0 PID: 4586 Comm: syz-executor.0 Tainted: G W syzkaller #0 [ 42.670680][ T4586] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/02/2026 [ 42.672448][ T4586] Call trace: [ 42.673083][ T4586] dump_backtrace+0x0/0x458 [ 42.673884][ T4586] show_stack+0x2c/0x3c [ 42.674662][ T4586] __dump_stack+0x30/0x40 [ 42.675438][ T4586] dump_stack_lvl+0xf4/0x15c [ 42.676236][ T4586] dump_stack+0x1c/0x5c [ 42.676927][ T4586] should_fail+0x3c8/0x520 [ 42.677704][ T4586] __should_failslab+0xbc/0x10c [ 42.678602][ T4586] should_failslab+0x10/0x28 [ 42.679383][ T4586] slab_pre_alloc_hook+0x64/0xe8 [ 42.680234][ T4586] kmem_cache_alloc_trace+0x98/0x3f0 [ 42.681122][ T4586] btrfs_alloc_root+0x8c/0x9e0 [ 42.681955][ T4586] btrfs_create_tree+0x110/0x9b4 [ 42.682781][ T4586] btrfs_quota_enable+0x370/0x1904 [ 42.683713][ T4586] btrfs_ioctl_quota_ctl+0x13c/0x180 [ 42.684662][ T4586] btrfs_ioctl+0x96c/0xa8c [ 42.685431][ T4586] __arm64_sys_ioctl+0x14c/0x1c8 [ 42.686290][ T4586] invoke_syscall+0x98/0x28c [ 42.687080][ T4586] el0_svc_common+0x13c/0x258 [ 42.687871][ T4586] do_el0_svc+0x5c/0x140 [ 42.688572][ T4586] el0_svc+0x78/0x1d0 [ 42.689248][ T4586] el0t_64_sync_handler+0xcc/0xe4 [ 42.690126][ T4586] el0t_64_sync+0x1a0/0x1a4 [ 42.693124][ T4586] ------------[ cut here ]------------ [ 42.694191][ T4586] WARNING: CPU: 1 PID: 4586 at fs/btrfs/qgroup.c:1009 btrfs_quota_enable+0x1100/0x1904 [ 42.695839][ T4586] Modules linked in: [ 42.696573][ T4586] CPU: 1 PID: 4586 Comm: syz-executor.0 Tainted: G W syzkaller #0 [ 42.698239][ T4586] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/02/2026 [ 42.700112][ T4586] pstate: 62400005 (nZCv daif +PAN -UAO +TCO -DIT -SSBS BTYPE=--) [ 42.701507][ T4586] pc : btrfs_quota_enable+0x1100/0x1904 [ 42.702617][ T4586] lr : btrfs_quota_enable+0x1100/0x1904 [ 42.703684][ T4586] sp : ffff800020087ae0 [ 42.704505][ T4586] x29: ffff800020087c40 x28: 0000000000001798 x27: ffff0000de5904d0 [ 42.706035][ T4586] x26: dfff800000000000 x25: fffffffffffffff4 x24: ffff0000cf0f6000 [ 42.707554][ T4586] x23: ffff0000c9f7b600 x22: ffff700004010f6c x21: 1fffe0001bcb20a5 [ 42.708948][ T4586] x20: ffff0000de590528 x19: ffff0000c146c000 x18: 0000000000000000 [ 42.710408][ T4586] x17: 0000000000000000 x16: ffff80001134e478 x15: 0000000000000000 [ 42.711752][ T4586] x14: 0000000000000001 x13: 1fffe000341d2dab x12: 0000000000000000 [ 42.713109][ T4586] x11: ff8080000830061c x10: 0000000000000000 x9 : ae46b44a5b42df00 [ 42.714549][ T4586] x8 : ae46b44a5b42df00 x7 : 0000000000000001 x6 : 0000000000000001 [ 42.715915][ T4586] x5 : ffff8000200873f8 x4 : ffff80001446f500 x3 : ffff80000850f688 [ 42.717369][ T4586] x2 : 0000000000000001 x1 : 0000000100000000 x0 : 0000000000000026 [ 42.718811][ T4586] Call trace: [ 42.719384][ T4586] btrfs_quota_enable+0x1100/0x1904 [ 42.720348][ T4586] btrfs_ioctl_quota_ctl+0x13c/0x180 [ 42.721285][ T4586] btrfs_ioctl+0x96c/0xa8c [ 42.722086][ T4586] __arm64_sys_ioctl+0x14c/0x1c8 [ 42.722969][ T4586] invoke_syscall+0x98/0x28c [ 42.723759][ T4586] el0_svc_common+0x13c/0x258 [ 42.724588][ T4586] do_el0_svc+0x5c/0x140 [ 42.725351][ T4586] el0_svc+0x78/0x1d0 [ 42.726054][ T4586] el0t_64_sync_handler+0xcc/0xe4 [ 42.726957][ T4586] el0t_64_sync+0x1a0/0x1a4 [ 42.727936][ T4586] irq event stamp: 80018 [ 42.728803][ T4586] hardirqs last enabled at (80017): [] __up_console_sem+0xb4/0xfc [ 42.730737][ T4586] hardirqs last disabled at (80018): [] el1_dbg+0x24/0x80 [ 42.732516][ T4586] softirqs last enabled at (79992): [] handle_softirqs+0xa70/0xc14 [ 42.734367][ T4586] softirqs last disabled at (79921): [] __irq_exit_rcu+0x240/0x434 [ 42.736055][ T4586] ---[ end trace ddfcf5910ad65cf4 ]--- [ 42.737197][ T4586] BTRFS: error (device loop0) in btrfs_quota_enable:1009: errno=-12 Out of memory [ 42.738821][ T4586] BTRFS info (device loop0): forced readonly [ 42.896739][ T4621] loop0: detected capacity change from 0 to 32768 [ 42.899427][ T4621] BTRFS: device fsid a6a605fc-d5f1-4e66-8595-3726e2b761d6 devid 1 transid 8 /dev/loop0 scanned by syz-executor.0 (4621) [ 42.904144][ T4621] BTRFS info (device loop0): using blake2b (blake2b-256-generic) checksum algorithm [ 42.906130][ T4621] BTRFS info (device loop0): using free space tree [ 42.907231][ T4621] BTRFS info (device loop0): has skinny extents [ 42.920004][ T4621] BTRFS info (device loop0): enabling ssd optimizations [ 42.923448][ T4621] FAULT_INJECTION: forcing a failure. [ 42.923448][ T4621] name failslab, interval 1, probability 0, space 0, times 0 [ 42.926031][ T4621] CPU: 1 PID: 4621 Comm: syz-executor.0 Tainted: G W syzkaller #0 [ 42.927624][ T4621] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/02/2026 [ 42.929566][ T4621] Call trace: [ 42.930174][ T4621] dump_backtrace+0x0/0x458 [ 42.931004][ T4621] show_stack+0x2c/0x3c [ 42.931724][ T4621] __dump_stack+0x30/0x40 [ 42.932487][ T4621] dump_stack_lvl+0xf4/0x15c [ 42.933271][ T4621] dump_stack+0x1c/0x5c [ 42.933989][ T4621] should_fail+0x3c8/0x520 [ 42.934762][ T4621] __should_failslab+0xbc/0x10c [ 42.935644][ T4621] should_failslab+0x10/0x28 [ 42.936456][ T4621] slab_pre_alloc_hook+0x64/0xe8 [ 42.937440][ T4621] kmem_cache_alloc_trace+0x98/0x3f0 [ 42.938409][ T4621] btrfs_alloc_root+0x8c/0x9e0 [ 42.939264][ T4621] btrfs_create_tree+0x110/0x9b4 [ 42.940186][ T4621] btrfs_quota_enable+0x370/0x1904 [ 42.941144][ T4621] btrfs_ioctl_quota_ctl+0x13c/0x180 [ 42.942068][ T4621] btrfs_ioctl+0x96c/0xa8c [ 42.942888][ T4621] __arm64_sys_ioctl+0x14c/0x1c8 [ 42.943741][ T4621] invoke_syscall+0x98/0x28c [ 42.944531][ T4621] el0_svc_common+0x13c/0x258 [ 42.945342][ T4621] do_el0_svc+0x5c/0x140 [ 42.946175][ T4621] el0_svc+0x78/0x1d0 [ 42.946969][ T4621] el0t_64_sync_handler+0xcc/0xe4 [ 42.947948][ T4621] el0t_64_sync+0x1a0/0x1a4 [ 42.949540][ T4621] ------------[ cut here ]------------ [ 42.950613][ T4621] WARNING: CPU: 1 PID: 4621 at fs/btrfs/qgroup.c:1009 btrfs_quota_enable+0x1100/0x1904 [ 42.952329][ T4621] Modules linked in: [ 42.953019][ T4621] CPU: 1 PID: 4621 Comm: syz-executor.0 Tainted: G W syzkaller #0 [ 42.954653][ T4621] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/02/2026 [ 42.956626][ T4621] pstate: 62400005 (nZCv daif +PAN -UAO +TCO -DIT -SSBS BTYPE=--) [ 42.958112][ T4621] pc : btrfs_quota_enable+0x1100/0x1904 [ 42.959124][ T4621] lr : btrfs_quota_enable+0x1100/0x1904 [ 42.960134][ T4621] sp : ffff80001fb87ae0 [ 42.960902][ T4621] x29: ffff80001fb87c40 x28: 0000000000001798 x27: ffff0000cee0a0b0 [ 42.962401][ T4621] x26: dfff800000000000 x25: fffffffffffffff4 x24: ffff0000dbe54000 [ 42.963888][ T4621] x23: ffff0000d254dd00 x22: ffff700003f70f6c x21: 1fffe00019dc1421 [ 42.965471][ T4621] x20: ffff0000cee0a108 x19: ffff0000cc8e4000 x18: 0000000000000000 [ 42.967067][ T4621] x17: 0000000000000000 x16: ffff80001134e478 x15: 0000000000000000 [ 42.968659][ T4621] x14: 0000000000000001 x13: 1fffe000341d2dab x12: 0000000000000000 [ 42.970312][ T4621] x11: ff8080000830061c x10: 0000000000000000 x9 : 0bffbf1501f1b000 [ 42.971783][ T4621] x8 : 0bffbf1501f1b000 x7 : 0000000000000001 x6 : 0000000000000001 [ 42.973260][ T4621] x5 : ffff80001fb873f8 x4 : ffff80001446f500 x3 : ffff80000850f688 [ 42.974630][ T4621] x2 : 0000000000000001 x1 : 0000000100000000 x0 : 0000000000000026 [ 42.976126][ T4621] Call trace: [ 42.976728][ T4621] btrfs_quota_enable+0x1100/0x1904 [ 42.977636][ T4621] btrfs_ioctl_quota_ctl+0x13c/0x180 [ 42.978567][ T4621] btrfs_ioctl+0x96c/0xa8c [ 42.979359][ T4621] __arm64_sys_ioctl+0x14c/0x1c8 [ 42.980291][ T4621] invoke_syscall+0x98/0x28c [ 42.981049][ T4621] el0_svc_common+0x13c/0x258 [ 42.981844][ T4621] do_el0_svc+0x5c/0x140 [ 42.982587][ T4621] el0_svc+0x78/0x1d0 [ 42.983290][ T4621] el0t_64_sync_handler+0xcc/0xe4 [ 42.984196][ T4621] el0t_64_sync+0x1a0/0x1a4 [ 42.984982][ T4621] irq event stamp: 79086 [ 42.985746][ T4621] hardirqs last enabled at (79085): [] __up_console_sem+0xb4/0xfc [ 42.987471][ T4621] hardirqs last disabled at (79086): [] el1_dbg+0x24/0x80 [ 42.988970][ T4621] softirqs last enabled at (79066): [] handle_softirqs+0xa70/0xc14 [ 42.990688][ T4621] softirqs last disabled at (78991): [] __irq_exit_rcu+0x240/0x434 [ 42.992247][ T4621] ---[ end trace ddfcf5910ad65cf5 ]--- [ 42.993649][ T4621] BTRFS: error (device loop0) in btrfs_quota_enable:1009: errno=-12 Out of memory [ 42.995215][ T4621] BTRFS info (device loop0): forced readonly [ 43.157065][ T4643] loop0: detected capacity change from 0 to 32768 [ 43.160998][ T4643] BTRFS: device fsid a6a605fc-d5f1-4e66-8595-3726e2b761d6 devid 1 transid 8 /dev/loop0 scanned by syz-executor.0 (4643) [ 43.170729][ T4643] BTRFS info (device loop0): using blake2b (blake2b-256-generic) checksum algorithm [ 43.172567][ T4643] BTRFS info (device loop0): using free space tree [ 43.173887][ T4643] BTRFS info (device loop0): has skinny extents [ 43.189487][ T4643] BTRFS info (device loop0): enabling ssd optimizations [ 43.193333][ T4643] FAULT_INJECTION: forcing a failure. [ 43.193333][ T4643] name failslab, interval 1, probability 0, space 0, times 0 [ 43.196279][ T4643] CPU: 0 PID: 4643 Comm: syz-executor.0 Tainted: G W syzkaller #0 [ 43.198028][ T4643] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/02/2026 [ 43.200133][ T4643] Call trace: [ 43.200783][ T4643] dump_backtrace+0x0/0x458 [ 43.201730][ T4643] show_stack+0x2c/0x3c [ 43.202507][ T4643] __dump_stack+0x30/0x40 [ 43.203320][ T4643] dump_stack_lvl+0xf4/0x15c [ 43.204313][ T4643] dump_stack+0x1c/0x5c [ 43.205103][ T4643] should_fail+0x3c8/0x520 [ 43.205905][ T4643] __should_failslab+0xbc/0x10c [ 43.206797][ T4643] should_failslab+0x10/0x28 [ 43.207660][ T4643] slab_pre_alloc_hook+0x64/0xe8 [ 43.208620][ T4643] kmem_cache_alloc+0x94/0x3d8 [ 43.209582][ T4643] start_transaction+0x530/0x1438 [ 43.210540][ T4643] btrfs_start_transaction+0x34/0x44 [ 43.211502][ T4643] btrfs_quota_enable+0x1cc/0x1904 [ 43.212446][ T4643] btrfs_ioctl_quota_ctl+0x13c/0x180 [ 43.213451][ T4643] btrfs_ioctl+0x96c/0xa8c [ 43.214296][ T4643] __arm64_sys_ioctl+0x14c/0x1c8 [ 43.215161][ T4643] invoke_syscall+0x98/0x28c [ 43.215966][ T4643] el0_svc_common+0x13c/0x258 [ 43.216779][ T4643] do_el0_svc+0x5c/0x140 [ 43.217534][ T4643] el0_svc+0x78/0x1d0 [ 43.218231][ T4643] el0t_64_sync_handler+0xcc/0xe4 [ 43.219047][ T4643] el0t_64_sync+0x1a0/0x1a4 [ 43.437411][ T4664] loop0: detected capacity change from 0 to 32768 [ 43.440209][ T4664] BTRFS: device fsid a6a605fc-d5f1-4e66-8595-3726e2b761d6 devid 1 transid 8 /dev/loop0 scanned by syz-executor.0 (4664) [ 43.444314][ T4664] BTRFS info (device loop0): using blake2b (blake2b-256-generic) checksum algorithm [ 43.446483][ T4664] BTRFS info (device loop0): using free space tree [ 43.447639][ T4664] BTRFS info (device loop0): has skinny extents [ 43.459826][ T4664] BTRFS info (device loop0): enabling ssd optimizations [ 43.463842][ T4664] FAULT_INJECTION: forcing a failure. [ 43.463842][ T4664] name failslab, interval 1, probability 0, space 0, times 0 [ 43.470371][ T4664] CPU: 1 PID: 4664 Comm: syz-executor.0 Tainted: G W syzkaller #0 [ 43.472021][ T4664] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/02/2026 [ 43.473948][ T4664] Call trace: [ 43.474538][ T4664] dump_backtrace+0x0/0x458 [ 43.475340][ T4664] show_stack+0x2c/0x3c [ 43.476083][ T4664] __dump_stack+0x30/0x40 [ 43.476854][ T4664] dump_stack_lvl+0xf4/0x15c [ 43.477717][ T4664] dump_stack+0x1c/0x5c [ 43.478446][ T4664] should_fail+0x3c8/0x520 [ 43.479220][ T4664] __should_failslab+0xbc/0x10c [ 43.480045][ T4664] should_failslab+0x10/0x28 [ 43.480824][ T4664] slab_pre_alloc_hook+0x64/0xe8 [ 43.481766][ T4664] kmem_cache_alloc_trace+0x98/0x3f0 [ 43.482686][ T4664] btrfs_alloc_root+0x8c/0x9e0 [ 43.483580][ T4664] btrfs_create_tree+0x110/0x9b4 [ 43.484387][ T4664] btrfs_quota_enable+0x370/0x1904 [ 43.485326][ T4664] btrfs_ioctl_quota_ctl+0x13c/0x180 [ 43.486205][ T4664] btrfs_ioctl+0x96c/0xa8c [ 43.486941][ T4664] __arm64_sys_ioctl+0x14c/0x1c8 [ 43.487770][ T4664] invoke_syscall+0x98/0x28c [ 43.488600][ T4664] el0_svc_common+0x13c/0x258 [ 43.489456][ T4664] do_el0_svc+0x5c/0x140 [ 43.490222][ T4664] el0_svc+0x78/0x1d0 [ 43.490942][ T4664] el0t_64_sync_handler+0xcc/0xe4 [ 43.491845][ T4664] el0t_64_sync+0x1a0/0x1a4 [ 43.493446][ T4664] ------------[ cut here ]------------ [ 43.494499][ T4664] WARNING: CPU: 1 PID: 4664 at fs/btrfs/qgroup.c:1009 btrfs_quota_enable+0x1100/0x1904 [ 43.496158][ T4664] Modules linked in: [ 43.496858][ T4664] CPU: 1 PID: 4664 Comm: syz-executor.0 Tainted: G W syzkaller #0 [ 43.498519][ T4664] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/02/2026 [ 43.500321][ T4664] pstate: 62400005 (nZCv daif +PAN -UAO +TCO -DIT -SSBS BTYPE=--) [ 43.501809][ T4664] pc : btrfs_quota_enable+0x1100/0x1904 [ 43.502748][ T4664] lr : btrfs_quota_enable+0x1100/0x1904 [ 43.503764][ T4664] sp : ffff800020217ae0 [ 43.504455][ T4664] x29: ffff800020217c40 x28: 0000000000001798 x27: ffff0000cee0a2c0 [ 43.506134][ T4664] x26: dfff800000000000 x25: fffffffffffffff4 x24: ffff0000d2164000 [ 43.507751][ T4664] x23: ffff0000c0cd5300 x22: ffff700004042f6c x21: 1fffe00019dc1463 [ 43.509332][ T4664] x20: ffff0000cee0a318 x19: ffff0000cea58000 x18: 0000000000000000 [ 43.510935][ T4664] x17: 0000000000000000 x16: ffff80001134e478 x15: 0000000000000000 [ 43.512523][ T4664] x14: 0000000000000001 x13: 1fffe000341d2dab x12: 0000000000000000 [ 43.514025][ T4664] x11: ff8080000830061c x10: 0000000000000000 x9 : e4f9df1b5f1b5e00 [ 43.515493][ T4664] x8 : e4f9df1b5f1b5e00 x7 : 0000000000000001 x6 : 0000000000000001 [ 43.517014][ T4664] x5 : ffff8000202173f8 x4 : ffff80001446f500 x3 : ffff80000850f688 [ 43.518582][ T4664] x2 : 0000000000000001 x1 : 0000000100000000 x0 : 0000000000000026 [ 43.520211][ T4664] Call trace: [ 43.520807][ T4664] btrfs_quota_enable+0x1100/0x1904 [ 43.521740][ T4664] btrfs_ioctl_quota_ctl+0x13c/0x180 [ 43.522656][ T4664] btrfs_ioctl+0x96c/0xa8c [ 43.523437][ T4664] __arm64_sys_ioctl+0x14c/0x1c8 [ 43.524440][ T4664] invoke_syscall+0x98/0x28c [ 43.525393][ T4664] el0_svc_common+0x13c/0x258 [ 43.526320][ T4664] do_el0_svc+0x5c/0x140 [ 43.527185][ T4664] el0_svc+0x78/0x1d0 [ 43.527997][ T4664] el0t_64_sync_handler+0xcc/0xe4 [ 43.529040][ T4664] el0t_64_sync+0x1a0/0x1a4 [ 43.529839][ T4664] irq event stamp: 78772 [ 43.530551][ T4664] hardirqs last enabled at (78771): [] __up_console_sem+0xb4/0xfc [ 43.532191][ T4664] hardirqs last disabled at (78772): [] el1_dbg+0x24/0x80 [ 43.533642][ T4664] softirqs last enabled at (78752): [] handle_softirqs+0xa70/0xc14 [ 43.535254][ T4664] softirqs last disabled at (78723): [] __irq_exit_rcu+0x240/0x434 [ 43.536798][ T4664] ---[ end trace ddfcf5910ad65cf6 ]--- [ 43.538545][ T4664] BTRFS: error (device loop0) in btrfs_quota_enable:1009: errno=-12 Out of memory [ 43.540027][ T4664] BTRFS info (device loop0): forced readonly [ 43.701776][ T4685] loop0: detected capacity change from 0 to 32768 [ 43.705315][ T4685] BTRFS: device fsid a6a605fc-d5f1-4e66-8595-3726e2b761d6 devid 1 transid 8 /dev/loop0 scanned by syz-executor.0 (4685) [ 43.708989][ T4685] BTRFS info (device loop0): using blake2b (blake2b-256-generic) checksum algorithm [ 43.710838][ T4685] BTRFS info (device loop0): using free space tree [ 43.711972][ T4685] BTRFS info (device loop0): has skinny extents [ 43.728390][ T4685] BTRFS info (device loop0): enabling ssd optimizations [ 43.732065][ T4685] FAULT_INJECTION: forcing a failure. [ 43.732065][ T4685] name failslab, interval 1, probability 0, space 0, times 0 [ 43.734410][ T4685] CPU: 1 PID: 4685 Comm: syz-executor.0 Tainted: G W syzkaller #0 [ 43.736053][ T4685] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/02/2026 [ 43.737910][ T4685] Call trace: [ 43.738561][ T4685] dump_backtrace+0x0/0x458 [ 43.739396][ T4685] show_stack+0x2c/0x3c [ 43.740224][ T4685] __dump_stack+0x30/0x40 [ 43.741012][ T4685] dump_stack_lvl+0xf4/0x15c [ 43.741839][ T4685] dump_stack+0x1c/0x5c [ 43.742599][ T4685] should_fail+0x3c8/0x520 [ 43.743422][ T4685] __should_failslab+0xbc/0x10c [ 43.744241][ T4685] should_failslab+0x10/0x28 [ 43.745048][ T4685] slab_pre_alloc_hook+0x64/0xe8 [ 43.745955][ T4685] kmem_cache_alloc_trace+0x98/0x3f0 [ 43.746909][ T4685] btrfs_alloc_root+0x8c/0x9e0 [ 43.747754][ T4685] btrfs_create_tree+0x110/0x9b4 [ 43.748678][ T4685] btrfs_quota_enable+0x370/0x1904 [ 43.749590][ T4685] btrfs_ioctl_quota_ctl+0x13c/0x180 [ 43.750520][ T4685] btrfs_ioctl+0x96c/0xa8c [ 43.751345][ T4685] __arm64_sys_ioctl+0x14c/0x1c8 [ 43.752271][ T4685] invoke_syscall+0x98/0x28c [ 43.753126][ T4685] el0_svc_common+0x13c/0x258 [ 43.753998][ T4685] do_el0_svc+0x5c/0x140 [ 43.754748][ T4685] el0_svc+0x78/0x1d0 [ 43.755460][ T4685] el0t_64_sync_handler+0xcc/0xe4 [ 43.756351][ T4685] el0t_64_sync+0x1a0/0x1a4 [ 43.757987][ T4685] ------------[ cut here ]------------ [ 43.758972][ T4685] WARNING: CPU: 1 PID: 4685 at fs/btrfs/qgroup.c:1009 btrfs_quota_enable+0x1100/0x1904 [ 43.760648][ T4685] Modules linked in: [ 43.761489][ T4685] CPU: 1 PID: 4685 Comm: syz-executor.0 Tainted: G W syzkaller #0 [ 43.763372][ T4685] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/02/2026 [ 43.765248][ T4685] pstate: 62400005 (nZCv daif +PAN -UAO +TCO -DIT -SSBS BTYPE=--) [ 43.766645][ T4685] pc : btrfs_quota_enable+0x1100/0x1904 [ 43.767630][ T4685] lr : btrfs_quota_enable+0x1100/0x1904 [ 43.768658][ T4685] sp : ffff800020307ae0 [ 43.769409][ T4685] x29: ffff800020307c40 x28: 0000000000001798 x27: ffff0000cee0a420 [ 43.770870][ T4685] x26: dfff800000000000 x25: fffffffffffffff4 x24: ffff0000c8d1c000 [ 43.772309][ T4685] x23: ffff0000d1f2d700 x22: ffff700004060f6c x21: 1fffe00019dc148f [ 43.773754][ T4685] x20: ffff0000cee0a478 x19: ffff0000d7e50000 x18: 0000000000000000 [ 43.775109][ T4685] x17: 0000000000000000 x16: ffff80001134e478 x15: 0000000000000000 [ 43.776462][ T4685] x14: 0000000000000001 x13: 1fffe000341d2dab x12: 0000000000000000 [ 43.777856][ T4685] x11: ff8080000830061c x10: 0000000000000000 x9 : ed457f3362cfcd00 [ 43.779254][ T4685] x8 : ed457f3362cfcd00 x7 : 0000000000000001 x6 : 0000000000000001 [ 43.780610][ T4685] x5 : ffff8000203073f8 x4 : ffff80001446f500 x3 : ffff80000850f688 [ 43.782016][ T4685] x2 : 0000000000000001 x1 : 0000000100000000 x0 : 0000000000000026 [ 43.783508][ T4685] Call trace: [ 43.784098][ T4685] btrfs_quota_enable+0x1100/0x1904 [ 43.785030][ T4685] btrfs_ioctl_quota_ctl+0x13c/0x180 [ 43.785979][ T4685] btrfs_ioctl+0x96c/0xa8c [ 43.786749][ T4685] __arm64_sys_ioctl+0x14c/0x1c8 [ 43.787605][ T4685] invoke_syscall+0x98/0x28c [ 43.788442][ T4685] el0_svc_common+0x13c/0x258 [ 43.789320][ T4685] do_el0_svc+0x5c/0x140 [ 43.790034][ T4685] el0_svc+0x78/0x1d0 [ 43.790718][ T4685] el0t_64_sync_handler+0xcc/0xe4 [ 43.791587][ T4685] el0t_64_sync+0x1a0/0x1a4 [ 43.792386][ T4685] irq event stamp: 79578 [ 43.793206][ T4685] hardirqs last enabled at (79577): [] __up_console_sem+0xb4/0xfc [ 43.794831][ T4685] hardirqs last disabled at (79578): [] el1_dbg+0x24/0x80 [ 43.796441][ T4685] softirqs last enabled at (79558): [] handle_softirqs+0xa70/0xc14 [ 43.798119][ T4685] softirqs last disabled at (79529): [] __irq_exit_rcu+0x240/0x434 [ 43.799834][ T4685] ---[ end trace ddfcf5910ad65cf7 ]--- [ 43.802207][ T4685] BTRFS: error (device loop0) in btrfs_quota_enable:1009: errno=-12 Out of memory [ 43.803883][ T4685] BTRFS info (device loop0): forced readonly [ 43.982899][ T4706] loop0: detected capacity change from 0 to 32768 [ 43.985586][ T4706] BTRFS: device fsid a6a605fc-d5f1-4e66-8595-3726e2b761d6 devid 1 transid 8 /dev/loop0 scanned by syz-executor.0 (4706) [ 43.991921][ T4706] BTRFS info (device loop0): using blake2b (blake2b-256-generic) checksum algorithm [ 43.993640][ T4706] BTRFS info (device loop0): using free space tree [ 43.994803][ T4706] BTRFS info (device loop0): has skinny extents [ 44.005854][ T4706] BTRFS info (device loop0): enabling ssd optimizations [ 44.009957][ T4706] FAULT_INJECTION: forcing a failure. [ 44.009957][ T4706] name failslab, interval 1, probability 0, space 0, times 0 [ 44.012371][ T4706] CPU: 0 PID: 4706 Comm: syz-executor.0 Tainted: G W syzkaller #0 [ 44.014187][ T4706] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/02/2026 [ 44.015950][ T4706] Call trace: [ 44.016509][ T4706] dump_backtrace+0x0/0x458 [ 44.017335][ T4706] show_stack+0x2c/0x3c [ 44.018209][ T4706] __dump_stack+0x30/0x40 [ 44.018993][ T4706] dump_stack_lvl+0xf4/0x15c [ 44.019830][ T4706] dump_stack+0x1c/0x5c [ 44.020658][ T4706] should_fail+0x3c8/0x520 [ 44.021459][ T4706] __should_failslab+0xbc/0x10c [ 44.022375][ T4706] should_failslab+0x10/0x28 [ 44.023241][ T4706] slab_pre_alloc_hook+0x64/0xe8 [ 44.024118][ T4706] kmem_cache_alloc_trace+0x98/0x3f0 [ 44.025073][ T4706] btrfs_alloc_root+0x8c/0x9e0 [ 44.025947][ T4706] btrfs_create_tree+0x110/0x9b4 [ 44.026898][ T4706] btrfs_quota_enable+0x370/0x1904 [ 44.027836][ T4706] btrfs_ioctl_quota_ctl+0x13c/0x180 [ 44.028859][ T4706] btrfs_ioctl+0x96c/0xa8c [ 44.029645][ T4706] __arm64_sys_ioctl+0x14c/0x1c8 [ 44.030547][ T4706] invoke_syscall+0x98/0x28c [ 44.031391][ T4706] el0_svc_common+0x13c/0x258 [ 44.032276][ T4706] do_el0_svc+0x5c/0x140 [ 44.033013][ T4706] el0_svc+0x78/0x1d0 [ 44.033787][ T4706] el0t_64_sync_handler+0xcc/0xe4 [ 44.034785][ T4706] el0t_64_sync+0x1a0/0x1a4 [ 44.037273][ T4706] ------------[ cut here ]------------ [ 44.038351][ T4706] WARNING: CPU: 0 PID: 4706 at fs/btrfs/qgroup.c:1009 btrfs_quota_enable+0x1100/0x1904 [ 44.040105][ T4706] Modules linked in: [ 44.040812][ T4706] CPU: 0 PID: 4706 Comm: syz-executor.0 Tainted: G W syzkaller #0 [ 44.042533][ T4706] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/02/2026 [ 44.044452][ T4706] pstate: 62400005 (nZCv daif +PAN -UAO +TCO -DIT -SSBS BTYPE=--) [ 44.045951][ T4706] pc : btrfs_quota_enable+0x1100/0x1904 [ 44.047012][ T4706] lr : btrfs_quota_enable+0x1100/0x1904 [ 44.048074][ T4706] sp : ffff800020477ae0 [ 44.048765][ T4706] x29: ffff800020477c40 x28: 0000000000001798 x27: ffff0000de590790 [ 44.050202][ T4706] x26: dfff800000000000 x25: fffffffffffffff4 x24: ffff0000d6cbe000 [ 44.051552][ T4706] x23: ffff0000d547d800 x22: ffff70000408ef6c x21: 1fffe0001bcb20fd [ 44.052994][ T4706] x20: ffff0000de5907e8 x19: ffff0000d7e50000 x18: 0000000000000000 [ 44.054485][ T4706] x17: 0000000000000000 x16: ffff80001134e478 x15: 0000000000000000 [ 44.055925][ T4706] x14: 0000000000000001 x13: 1fffe000341cebab x12: 0000000000000000 [ 44.057342][ T4706] x11: ff8080000830061c x10: 0000000000000000 x9 : 41f88098efafd800 [ 44.058819][ T4706] x8 : 41f88098efafd800 x7 : 0000000000000001 x6 : 0000000000000001 [ 44.060244][ T4706] x5 : ffff8000204773f8 x4 : ffff80001446f500 x3 : ffff80000850f688 [ 44.061681][ T4706] x2 : 0000000000000001 x1 : 0000000100000000 x0 : 0000000000000026 [ 44.063181][ T4706] Call trace: [ 44.063765][ T4706] btrfs_quota_enable+0x1100/0x1904 [ 44.064709][ T4706] btrfs_ioctl_quota_ctl+0x13c/0x180 [ 44.065649][ T4706] btrfs_ioctl+0x96c/0xa8c [ 44.066471][ T4706] __arm64_sys_ioctl+0x14c/0x1c8 [ 44.067308][ T4706] invoke_syscall+0x98/0x28c [ 44.068135][ T4706] el0_svc_common+0x13c/0x258 [ 44.068960][ T4706] do_el0_svc+0x5c/0x140 [ 44.069707][ T4706] el0_svc+0x78/0x1d0 [ 44.070437][ T4706] el0t_64_sync_handler+0xcc/0xe4 [ 44.071347][ T4706] el0t_64_sync+0x1a0/0x1a4 [ 44.072144][ T4706] irq event stamp: 79000 [ 44.072945][ T4706] hardirqs last enabled at (78999): [] __up_console_sem+0xb4/0xfc [ 44.074681][ T4706] hardirqs last disabled at (79000): [] el1_dbg+0x24/0x80 [ 44.076225][ T4706] softirqs last enabled at (78980): [] handle_softirqs+0xa70/0xc14 [ 44.078046][ T4706] softirqs last disabled at (78913): [] __irq_exit_rcu+0x240/0x434 [ 44.079850][ T4706] ---[ end trace ddfcf5910ad65cf8 ]--- [ 44.081958][ T4706] BTRFS: error (device loop0) in btrfs_quota_enable:1009: errno=-12 Out of memory [ 44.083674][ T4706] BTRFS info (device loop0): forced readonly [ 44.265553][ T13] Bluetooth: hci0: command 0x041b tx timeout [ 44.266238][ T4727] loop0: detected capacity change from 0 to 32768 [ 44.269331][ T4727] BTRFS: device fsid a6a605fc-d5f1-4e66-8595-3726e2b761d6 devid 1 transid 8 /dev/loop0 scanned by syz-executor.0 (4727) [ 44.272648][ T4727] BTRFS info (device loop0): using blake2b (blake2b-256-generic) checksum algorithm [ 44.275197][ T4727] BTRFS info (device loop0): using free space tree [ 44.276576][ T4727] BTRFS info (device loop0): has skinny extents [ 44.294187][ T4727] BTRFS info (device loop0): enabling ssd optimizations [ 44.298420][ T4727] FAULT_INJECTION: forcing a failure. [ 44.298420][ T4727] name failslab, interval 1, probability 0, space 0, times 0 [ 44.300910][ T4727] CPU: 1 PID: 4727 Comm: syz-executor.0 Tainted: G W syzkaller #0 [ 44.302498][ T4727] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/02/2026 [ 44.304242][ T4727] Call trace: [ 44.304818][ T4727] dump_backtrace+0x0/0x458 [ 44.305579][ T4727] show_stack+0x2c/0x3c [ 44.306361][ T4727] __dump_stack+0x30/0x40 [ 44.307130][ T4727] dump_stack_lvl+0xf4/0x15c [ 44.308084][ T4727] dump_stack+0x1c/0x5c [ 44.308977][ T4727] should_fail+0x3c8/0x520 [ 44.309849][ T4727] __should_failslab+0xbc/0x10c [ 44.310789][ T4727] should_failslab+0x10/0x28 [ 44.311596][ T4727] slab_pre_alloc_hook+0x64/0xe8 [ 44.312500][ T4727] kmem_cache_alloc_trace+0x98/0x3f0 [ 44.313450][ T4727] btrfs_alloc_root+0x8c/0x9e0 [ 44.314471][ T4727] btrfs_create_tree+0x110/0x9b4 [ 44.315366][ T4727] btrfs_quota_enable+0x370/0x1904 [ 44.316341][ T4727] btrfs_ioctl_quota_ctl+0x13c/0x180 [ 44.317284][ T4727] btrfs_ioctl+0x96c/0xa8c [ 44.318053][ T4727] __arm64_sys_ioctl+0x14c/0x1c8 [ 44.318908][ T4727] invoke_syscall+0x98/0x28c [ 44.319707][ T4727] el0_svc_common+0x13c/0x258 [ 44.320511][ T4727] do_el0_svc+0x5c/0x140 [ 44.321316][ T4727] el0_svc+0x78/0x1d0 [ 44.322027][ T4727] el0t_64_sync_handler+0xcc/0xe4 [ 44.322943][ T4727] el0t_64_sync+0x1a0/0x1a4 [ 44.324671][ T4727] ------------[ cut here ]------------ [ 44.325930][ T4727] WARNING: CPU: 1 PID: 4727 at fs/btrfs/qgroup.c:1009 btrfs_quota_enable+0x1100/0x1904 [ 44.327573][ T4727] Modules linked in: [ 44.328236][ T4727] CPU: 1 PID: 4727 Comm: syz-executor.0 Tainted: G W syzkaller #0 [ 44.329863][ T4727] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/02/2026 [ 44.331718][ T4727] pstate: 62400005 (nZCv daif +PAN -UAO +TCO -DIT -SSBS BTYPE=--) [ 44.333062][ T4727] pc : btrfs_quota_enable+0x1100/0x1904 [ 44.334019][ T4727] lr : btrfs_quota_enable+0x1100/0x1904 [ 44.334993][ T4727] sp : ffff800020217ae0 [ 44.335687][ T4727] x29: ffff800020217c40 x28: 0000000000001798 x27: ffff0000cee0a580 [ 44.337086][ T4727] x26: dfff800000000000 x25: fffffffffffffff4 x24: ffff0000dd26c000 [ 44.338517][ T4727] x23: ffff0000c1898a00 x22: ffff700004042f6c x21: 1fffe00019dc14bb [ 44.340042][ T4727] x20: ffff0000cee0a5d8 x19: ffff0000c22ec000 x18: 0000000000000000 [ 44.341414][ T4727] x17: 0000000000000000 x16: ffff80001134e478 x15: 0000000000000000 [ 44.342812][ T4727] x14: 0000000000000001 x13: 1fffe000341d2dab x12: 0000000000000000 [ 44.344281][ T4727] x11: ff8080000830061c x10: 0000000000000000 x9 : 5ee5849186f53b00 [ 44.345672][ T4727] x8 : 5ee5849186f53b00 x7 : 0000000000000001 x6 : 0000000000000001 [ 44.347098][ T4727] x5 : ffff8000202173f8 x4 : ffff80001446f500 x3 : ffff80000850f688 [ 44.348430][ T4727] x2 : 0000000000000001 x1 : 0000000100000000 x0 : 0000000000000026 [ 44.349793][ T4727] Call trace: [ 44.350381][ T4727] btrfs_quota_enable+0x1100/0x1904 [ 44.351363][ T4727] btrfs_ioctl_quota_ctl+0x13c/0x180 [ 44.352318][ T4727] btrfs_ioctl+0x96c/0xa8c [ 44.353132][ T4727] __arm64_sys_ioctl+0x14c/0x1c8 [ 44.353977][ T4727] invoke_syscall+0x98/0x28c [ 44.354975][ T4727] el0_svc_common+0x13c/0x258 [ 44.355928][ T4727] do_el0_svc+0x5c/0x140 [ 44.356686][ T4727] el0_svc+0x78/0x1d0 [ 44.357406][ T4727] el0t_64_sync_handler+0xcc/0xe4 [ 44.358333][ T4727] el0t_64_sync+0x1a0/0x1a4 [ 44.359293][ T4727] irq event stamp: 78886 [ 44.360115][ T4727] hardirqs last enabled at (78885): [] __up_console_sem+0xb4/0xfc [ 44.362092][ T4727] hardirqs last disabled at (78886): [] el1_dbg+0x24/0x80 [ 44.363792][ T4727] softirqs last enabled at (78874): [] handle_softirqs+0xa70/0xc14 [ 44.365572][ T4727] softirqs last disabled at (78853): [] __irq_exit_rcu+0x240/0x434 [ 44.367257][ T4727] ---[ end trace ddfcf5910ad65cf9 ]--- [ 44.368856][ T4727] BTRFS: error (device loop0) in btrfs_quota_enable:1009: errno=-12 Out of memory [ 44.370394][ T4727] BTRFS info (device loop0): forced readonly [ 44.576083][ T4748] BTRFS: device fsid a6a605fc-d5f1-4e66-8595-3726e2b761d6 devid 1 transid 8 /dev/loop0 scanned by syz-executor.0 (4748) [ 44.581170][ T4748] BTRFS info (device loop0): using blake2b (blake2b-256-generic) checksum algorithm [ 44.582913][ T4748] BTRFS info (device loop0): using free space tree [ 44.584092][ T4748] BTRFS info (device loop0): has skinny extents [ 44.591983][ T4748] BTRFS info (device loop0): enabling ssd optimizations [ 44.596412][ T4748] FAULT_INJECTION: forcing a failure. [ 44.596412][ T4748] name failslab, interval 1, probability 0, space 0, times 0 [ 44.598934][ T4748] CPU: 0 PID: 4748 Comm: syz-executor.0 Tainted: G W syzkaller #0 [ 44.600439][ T4748] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/02/2026 [ 44.602174][ T4748] Call trace: [ 44.602736][ T4748] dump_backtrace+0x0/0x458 [ 44.603507][ T4748] show_stack+0x2c/0x3c [ 44.604248][ T4748] __dump_stack+0x30/0x40 [ 44.605042][ T4748] dump_stack_lvl+0xf4/0x15c [ 44.605847][ T4748] dump_stack+0x1c/0x5c [ 44.606626][ T4748] should_fail+0x3c8/0x520 [ 44.607429][ T4748] __should_failslab+0xbc/0x10c [ 44.608274][ T4748] should_failslab+0x10/0x28 [ 44.609054][ T4748] slab_pre_alloc_hook+0x64/0xe8 [ 44.609902][ T4748] kmem_cache_alloc_trace+0x98/0x3f0 [ 44.610866][ T4748] btrfs_alloc_root+0x8c/0x9e0 [ 44.611652][ T4748] btrfs_create_tree+0x110/0x9b4 [ 44.612484][ T4748] btrfs_quota_enable+0x370/0x1904 [ 44.613397][ T4748] btrfs_ioctl_quota_ctl+0x13c/0x180 [ 44.614334][ T4748] btrfs_ioctl+0x96c/0xa8c [ 44.615142][ T4748] __arm64_sys_ioctl+0x14c/0x1c8 [ 44.616059][ T4748] invoke_syscall+0x98/0x28c [ 44.616940][ T4748] el0_svc_common+0x13c/0x258 [ 44.617838][ T4748] do_el0_svc+0x5c/0x140 [ 44.618619][ T4748] el0_svc+0x78/0x1d0 [ 44.619344][ T4748] el0t_64_sync_handler+0xcc/0xe4 [ 44.620424][ T4748] el0t_64_sync+0x1a0/0x1a4 [ 44.622509][ T4748] ------------[ cut here ]------------ [ 44.623594][ T4748] WARNING: CPU: 0 PID: 4748 at fs/btrfs/qgroup.c:1009 btrfs_quota_enable+0x1100/0x1904 [ 44.625219][ T4748] Modules linked in: [ 44.625925][ T4748] CPU: 0 PID: 4748 Comm: syz-executor.0 Tainted: G W syzkaller #0 [ 44.627532][ T4748] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/02/2026 [ 44.629251][ T4748] pstate: 62400005 (nZCv daif +PAN -UAO +TCO -DIT -SSBS BTYPE=--) [ 44.630601][ T4748] pc : btrfs_quota_enable+0x1100/0x1904 [ 44.631601][ T4748] lr : btrfs_quota_enable+0x1100/0x1904 [ 44.632606][ T4748] sp : ffff800020217ae0 [ 44.633349][ T4748] x29: ffff800020217c40 x28: 0000000000001798 x27: ffff0000de5908f0 [ 44.634862][ T4748] x26: dfff800000000000 x25: fffffffffffffff4 x24: ffff0000c7ba0000 [ 44.636403][ T4748] x23: ffff0000ca6ea200 x22: ffff700004042f6c x21: 1fffe0001bcb2129 [ 44.637923][ T4748] x20: ffff0000de590948 x19: ffff0000c2bc4000 x18: 0000000000000000 [ 44.639474][ T4748] x17: 0000000000000000 x16: ffff80001134e478 x15: 0000000000000000 [ 44.641046][ T4748] x14: 0000000000000001 x13: 1fffe000341cebab x12: 0000000000000000 [ 44.642533][ T4748] x11: ff8080000830061c x10: 0000000000000000 x9 : 0e2c9ca3a591b200 [ 44.643865][ T4748] x8 : 0e2c9ca3a591b200 x7 : 0000000000000001 x6 : 0000000000000001 [ 44.645303][ T4748] x5 : ffff8000202173f8 x4 : ffff80001446f500 x3 : ffff80000850f688 [ 44.646838][ T4748] x2 : 0000000000000001 x1 : 0000000100000000 x0 : 0000000000000026 [ 44.648356][ T4748] Call trace: [ 44.648948][ T4748] btrfs_quota_enable+0x1100/0x1904 [ 44.649872][ T4748] btrfs_ioctl_quota_ctl+0x13c/0x180 [ 44.650825][ T4748] btrfs_ioctl+0x96c/0xa8c [ 44.651638][ T4748] __arm64_sys_ioctl+0x14c/0x1c8 [ 44.652494][ T4748] invoke_syscall+0x98/0x28c [ 44.653460][ T4748] el0_svc_common+0x13c/0x258 [ 44.654490][ T4748] do_el0_svc+0x5c/0x140 [ 44.655378][ T4748] el0_svc+0x78/0x1d0 [ 44.656200][ T4748] el0t_64_sync_handler+0xcc/0xe4 [ 44.657257][ T4748] el0t_64_sync+0x1a0/0x1a4 [ 44.658109][ T4748] irq event stamp: 79180 [ 44.658948][ T4748] hardirqs last enabled at (79179): [] __up_console_sem+0xb4/0xfc [ 44.660890][ T4748] hardirqs last disabled at (79180): [] el1_dbg+0x24/0x80 [ 44.662716][ T4748] softirqs last enabled at (79160): [] handle_softirqs+0xa70/0xc14 [ 44.664498][ T4748] softirqs last disabled at (79143): [] __irq_exit_rcu+0x240/0x434 [ 44.666463][ T4748] ---[ end trace ddfcf5910ad65cfa ]--- [ 44.668367][ T4748] BTRFS: error (device loop0) in btrfs_quota_enable:1009: errno=-12 Out of memory [ 44.670112][ T4748] BTRFS info (device loop0): forced readonly [ 44.852651][ T4769] BTRFS: device fsid a6a605fc-d5f1-4e66-8595-3726e2b761d6 devid 1 transid 8 /dev/loop0 scanned by syz-executor.0 (4769) [ 44.857722][ T4769] BTRFS info (device loop0): using blake2b (blake2b-256-generic) checksum algorithm [ 44.859394][ T4769] BTRFS info (device loop0): using free space tree [ 44.860506][ T4769] BTRFS info (device loop0): has skinny extents [ 44.878652][ T4769] BTRFS info (device loop0): enabling ssd optimizations [ 44.882326][ T4769] FAULT_INJECTION: forcing a failure. [ 44.882326][ T4769] name failslab, interval 1, probability 0, space 0, times 0 [ 44.884678][ T4769] CPU: 1 PID: 4769 Comm: syz-executor.0 Tainted: G W syzkaller #0 [ 44.886390][ T4769] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/02/2026 [ 44.888226][ T4769] Call trace: [ 44.888831][ T4769] dump_backtrace+0x0/0x458 [ 44.889719][ T4769] show_stack+0x2c/0x3c [ 44.890536][ T4769] __dump_stack+0x30/0x40 [ 44.891405][ T4769] dump_stack_lvl+0xf4/0x15c [ 44.892269][ T4769] dump_stack+0x1c/0x5c [ 44.893051][ T4769] should_fail+0x3c8/0x520 [ 44.893908][ T4769] __should_failslab+0xbc/0x10c [ 44.894868][ T4769] should_failslab+0x10/0x28 [ 44.895775][ T4769] slab_pre_alloc_hook+0x64/0xe8 [ 44.896670][ T4769] kmem_cache_alloc_trace+0x98/0x3f0 [ 44.897598][ T4769] btrfs_alloc_root+0x8c/0x9e0 [ 44.898456][ T4769] btrfs_create_tree+0x110/0x9b4 [ 44.899300][ T4769] btrfs_quota_enable+0x370/0x1904 [ 44.900241][ T4769] btrfs_ioctl_quota_ctl+0x13c/0x180 [ 44.901260][ T4769] btrfs_ioctl+0x96c/0xa8c [ 44.902096][ T4769] __arm64_sys_ioctl+0x14c/0x1c8 [ 44.902957][ T4769] invoke_syscall+0x98/0x28c [ 44.903742][ T4769] el0_svc_common+0x13c/0x258 [ 44.904517][ T4769] do_el0_svc+0x5c/0x140 [ 44.905230][ T4769] el0_svc+0x78/0x1d0 [ 44.905914][ T4769] el0t_64_sync_handler+0xcc/0xe4 [ 44.906820][ T4769] el0t_64_sync+0x1a0/0x1a4 [ 44.909886][ T4769] ------------[ cut here ]------------ [ 44.910924][ T4769] WARNING: CPU: 1 PID: 4769 at fs/btrfs/qgroup.c:1009 btrfs_quota_enable+0x1100/0x1904 [ 44.912641][ T4769] Modules linked in: [ 44.913358][ T4769] CPU: 1 PID: 4769 Comm: syz-executor.0 Tainted: G W syzkaller #0 [ 44.915004][ T4769] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/02/2026 [ 44.916841][ T4769] pstate: 62400005 (nZCv daif +PAN -UAO +TCO -DIT -SSBS BTYPE=--) [ 44.918197][ T4769] pc : btrfs_quota_enable+0x1100/0x1904 [ 44.919181][ T4769] lr : btrfs_quota_enable+0x1100/0x1904 [ 44.920190][ T4769] sp : ffff8000207b7ae0 [ 44.920913][ T4769] x29: ffff8000207b7c40 x28: 0000000000001798 x27: ffff0000cee0a6e0 [ 44.922326][ T4769] x26: dfff800000000000 x25: fffffffffffffff4 x24: ffff0000d86cc000 [ 44.923700][ T4769] x23: ffff0000d5eb9400 x22: ffff7000040f6f6c x21: 1fffe00019dc14e7 [ 44.925135][ T4769] x20: ffff0000cee0a738 x19: ffff0000d0468000 x18: 0000000000000000 [ 44.926620][ T4769] x17: 0000000000000000 x16: ffff80001134e478 x15: 0000000000000000 [ 44.928178][ T4769] x14: 0000000000000001 x13: 1fffe000341d2dab x12: 0000000000000000 [ 44.929678][ T4769] x11: ff8080000830061c x10: 0000000000000000 x9 : ec393aa2cfb0d500 [ 44.931206][ T4769] x8 : ec393aa2cfb0d500 x7 : 0000000000000001 x6 : 0000000000000001 [ 44.932602][ T4769] x5 : ffff8000207b73f8 x4 : ffff80001446f500 x3 : ffff80000850f688 [ 44.933973][ T4769] x2 : 0000000000000001 x1 : 0000000100000000 x0 : 0000000000000026 [ 44.935488][ T4769] Call trace: [ 44.936113][ T4769] btrfs_quota_enable+0x1100/0x1904 [ 44.937105][ T4769] btrfs_ioctl_quota_ctl+0x13c/0x180 [ 44.938100][ T4769] btrfs_ioctl+0x96c/0xa8c [ 44.938911][ T4769] __arm64_sys_ioctl+0x14c/0x1c8 [ 44.939778][ T4769] invoke_syscall+0x98/0x28c [ 44.940612][ T4769] el0_svc_common+0x13c/0x258 [ 44.941454][ T4769] do_el0_svc+0x5c/0x140 [ 44.942222][ T4769] el0_svc+0x78/0x1d0 [ 44.942953][ T4769] el0t_64_sync_handler+0xcc/0xe4 [ 44.943870][ T4769] el0t_64_sync+0x1a0/0x1a4 [ 44.944689][ T4769] irq event stamp: 78762 [ 44.945394][ T4769] hardirqs last enabled at (78761): [] __up_console_sem+0xb4/0xfc [ 44.947033][ T4769] hardirqs last disabled at (78762): [] el1_dbg+0x24/0x80 [ 44.948534][ T4769] softirqs last enabled at (78742): [] handle_softirqs+0xa70/0xc14 [ 44.950147][ T4769] softirqs last disabled at (78661): [] __irq_exit_rcu+0x240/0x434 [ 44.951744][ T4769] ---[ end trace ddfcf5910ad65cfb ]--- [ 44.953507][ T4769] BTRFS: error (device loop0) in btrfs_quota_enable:1009: errno=-12 Out of memory [ 44.955059][ T4769] BTRFS info (device loop0): forced readonly [ 45.168316][ T4790] BTRFS: device fsid a6a605fc-d5f1-4e66-8595-3726e2b761d6 devid 1 transid 8 /dev/loop0 scanned by syz-executor.0 (4790) [ 45.172425][ T4790] BTRFS info (device loop0): using blake2b (blake2b-256-generic) checksum algorithm [ 45.174348][ T4790] BTRFS info (device loop0): using free space tree [ 45.176162][ T4790] BTRFS info (device loop0): has skinny extents [ 45.184529][ T4790] BTRFS info (device loop0): enabling ssd optimizations [ 45.189077][ T4790] FAULT_INJECTION: forcing a failure. [ 45.189077][ T4790] name failslab, interval 1, probability 0, space 0, times 0 [ 45.191651][ T4790] CPU: 0 PID: 4790 Comm: syz-executor.0 Tainted: G W syzkaller #0 [ 45.193295][ T4790] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/02/2026 [ 45.195186][ T4790] Call trace: [ 45.195814][ T4790] dump_backtrace+0x0/0x458 [ 45.196659][ T4790] show_stack+0x2c/0x3c [ 45.197541][ T4790] __dump_stack+0x30/0x40 [ 45.198453][ T4790] dump_stack_lvl+0xf4/0x15c [ 45.199416][ T4790] dump_stack+0x1c/0x5c [ 45.200247][ T4790] should_fail+0x3c8/0x520 [ 45.201153][ T4790] __should_failslab+0xbc/0x10c [ 45.202087][ T4790] should_failslab+0x10/0x28 [ 45.202966][ T4790] slab_pre_alloc_hook+0x64/0xe8 [ 45.203906][ T4790] kmem_cache_alloc_trace+0x98/0x3f0 [ 45.204896][ T4790] btrfs_alloc_root+0x8c/0x9e0 [ 45.205719][ T4790] btrfs_create_tree+0x110/0x9b4 [ 45.206602][ T4790] btrfs_quota_enable+0x370/0x1904 [ 45.207551][ T4790] btrfs_ioctl_quota_ctl+0x13c/0x180 [ 45.208550][ T4790] btrfs_ioctl+0x96c/0xa8c [ 45.209411][ T4790] __arm64_sys_ioctl+0x14c/0x1c8 [ 45.210389][ T4790] invoke_syscall+0x98/0x28c [ 45.211249][ T4790] el0_svc_common+0x13c/0x258 [ 45.212114][ T4790] do_el0_svc+0x5c/0x140 [ 45.212894][ T4790] el0_svc+0x78/0x1d0 [ 45.213608][ T4790] el0t_64_sync_handler+0xcc/0xe4 [ 45.214640][ T4790] el0t_64_sync+0x1a0/0x1a4 [ 45.217058][ T4790] ------------[ cut here ]------------ [ 45.218096][ T4790] WARNING: CPU: 0 PID: 4790 at fs/btrfs/qgroup.c:1009 btrfs_quota_enable+0x1100/0x1904 [ 45.219897][ T4790] Modules linked in: [ 45.220569][ T4790] CPU: 0 PID: 4790 Comm: syz-executor.0 Tainted: G W syzkaller #0 [ 45.222140][ T4790] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/02/2026 [ 45.223932][ T4790] pstate: 62400005 (nZCv daif +PAN -UAO +TCO -DIT -SSBS BTYPE=--) [ 45.225396][ T4790] pc : btrfs_quota_enable+0x1100/0x1904 [ 45.226587][ T4790] lr : btrfs_quota_enable+0x1100/0x1904 [ 45.227683][ T4790] sp : ffff800020cc7ae0 [ 45.228492][ T4790] x29: ffff800020cc7c40 x28: 0000000000001798 x27: ffff0000de590a50 [ 45.229935][ T4790] x26: dfff800000000000 x25: fffffffffffffff4 x24: ffff0000d7702000 [ 45.231410][ T4790] x23: ffff0000d5816400 x22: ffff700004198f6c x21: 1fffe0001bcb2155 [ 45.233000][ T4790] x20: ffff0000de590aa8 x19: ffff0000d34f4000 x18: 0000000000000000 [ 45.234505][ T4790] x17: 0000000000000000 x16: ffff80001134e478 x15: 0000000000000000 [ 45.236025][ T4790] x14: 0000000000000001 x13: 1fffe000341cebab x12: 0000000000000000 [ 45.237538][ T4790] x11: ff8080000830061c x10: 0000000000000000 x9 : 2416c7df0ff84b00 [ 45.239251][ T4790] x8 : 2416c7df0ff84b00 x7 : 0000000000000001 x6 : 0000000000000001 [ 45.240954][ T4790] x5 : ffff800020cc73f8 x4 : ffff80001446f500 x3 : ffff80000850f688 [ 45.242644][ T4790] x2 : 0000000000000001 x1 : 0000000100000000 x0 : 0000000000000026 [ 45.244246][ T4790] Call trace: [ 45.244916][ T4790] btrfs_quota_enable+0x1100/0x1904 [ 45.245994][ T4790] btrfs_ioctl_quota_ctl+0x13c/0x180 [ 45.247127][ T4790] btrfs_ioctl+0x96c/0xa8c [ 45.248081][ T4790] __arm64_sys_ioctl+0x14c/0x1c8 [ 45.249150][ T4790] invoke_syscall+0x98/0x28c [ 45.250132][ T4790] el0_svc_common+0x13c/0x258 [ 45.251052][ T4790] do_el0_svc+0x5c/0x140 [ 45.251889][ T4790] el0_svc+0x78/0x1d0 [ 45.252693][ T4790] el0t_64_sync_handler+0xcc/0xe4 [ 45.253680][ T4790] el0t_64_sync+0x1a0/0x1a4 [ 45.254563][ T4790] irq event stamp: 79344 [ 45.255372][ T4790] hardirqs last enabled at (79343): [] __up_console_sem+0xb4/0xfc [ 45.257283][ T4790] hardirqs last disabled at (79344): [] el1_dbg+0x24/0x80 [ 45.259007][ T4790] softirqs last enabled at (79324): [] handle_softirqs+0xa70/0xc14 [ 45.260847][ T4790] softirqs last disabled at (79301): [] __irq_exit_rcu+0x240/0x434 [ 45.262622][ T4790] ---[ end trace ddfcf5910ad65cfc ]--- [ 45.265287][ T4790] BTRFS: error (device loop0) in btrfs_quota_enable:1009: errno=-12 Out of memory [ 45.271105][ T4790] BTRFS info (device loop0): forced readonly 1970/01/01 00:00:45 executed programs: 13 [ 45.467378][ T4811] BTRFS: device fsid a6a605fc-d5f1-4e66-8595-3726e2b761d6 devid 1 transid 8 /dev/loop0 scanned by syz-executor.0 (4811) [ 45.471765][ T4811] BTRFS info (device loop0): using blake2b (blake2b-256-generic) checksum algorithm [ 45.473541][ T4811] BTRFS info (device loop0): using free space tree [ 45.474706][ T4811] BTRFS info (device loop0): has skinny extents [ 45.490121][ T4811] BTRFS info (device loop0): enabling ssd optimizations [ 45.494003][ T4811] FAULT_INJECTION: forcing a failure. [ 45.494003][ T4811] name failslab, interval 1, probability 0, space 0, times 0 [ 45.496492][ T4811] CPU: 0 PID: 4811 Comm: syz-executor.0 Tainted: G W syzkaller #0 [ 45.498006][ T4811] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/02/2026 [ 45.499915][ T4811] Call trace: [ 45.500567][ T4811] dump_backtrace+0x0/0x458 [ 45.501424][ T4811] show_stack+0x2c/0x3c [ 45.502220][ T4811] __dump_stack+0x30/0x40 [ 45.503042][ T4811] dump_stack_lvl+0xf4/0x15c [ 45.503932][ T4811] dump_stack+0x1c/0x5c [ 45.504651][ T4811] should_fail+0x3c8/0x520 [ 45.505424][ T4811] __should_failslab+0xbc/0x10c [ 45.506313][ T4811] should_failslab+0x10/0x28 [ 45.507153][ T4811] slab_pre_alloc_hook+0x64/0xe8 [ 45.507982][ T4811] kmem_cache_alloc_trace+0x98/0x3f0 [ 45.508961][ T4811] btrfs_alloc_root+0x8c/0x9e0 [ 45.509792][ T4811] btrfs_create_tree+0x110/0x9b4 [ 45.510830][ T4811] btrfs_quota_enable+0x370/0x1904 [ 45.511883][ T4811] btrfs_ioctl_quota_ctl+0x13c/0x180 [ 45.512892][ T4811] btrfs_ioctl+0x96c/0xa8c [ 45.513686][ T4811] __arm64_sys_ioctl+0x14c/0x1c8 [ 45.514615][ T4811] invoke_syscall+0x98/0x28c [ 45.515427][ T4811] el0_svc_common+0x13c/0x258 [ 45.516223][ T4811] do_el0_svc+0x5c/0x140 [ 45.516980][ T4811] el0_svc+0x78/0x1d0 [ 45.517672][ T4811] el0t_64_sync_handler+0xcc/0xe4 [ 45.518593][ T4811] el0t_64_sync+0x1a0/0x1a4 [ 45.519558][ T4811] ------------[ cut here ]------------ [ 45.521027][ T4811] WARNING: CPU: 0 PID: 4811 at fs/btrfs/qgroup.c:1009 btrfs_quota_enable+0x1100/0x1904 [ 45.522500][ T4811] Modules linked in: [ 45.523241][ T4811] CPU: 0 PID: 4811 Comm: syz-executor.0 Tainted: G W syzkaller #0 [ 45.525005][ T4811] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/02/2026 [ 45.527002][ T4811] pstate: 62400005 (nZCv daif +PAN -UAO +TCO -DIT -SSBS BTYPE=--) [ 45.528428][ T4811] pc : btrfs_quota_enable+0x1100/0x1904 [ 45.529487][ T4811] lr : btrfs_quota_enable+0x1100/0x1904 [ 45.530579][ T4811] sp : ffff800020697ae0 [ 45.531441][ T4811] x29: ffff800020697c40 x28: 0000000000001798 x27: ffff0000de590b00 [ 45.533172][ T4811] x26: dfff800000000000 x25: fffffffffffffff4 x24: ffff0000da43c000 [ 45.534914][ T4811] x23: ffff0000ca380b00 x22: ffff7000040d2f6c x21: 1fffe0001bcb216b [ 45.536361][ T4811] x20: ffff0000de590b58 x19: ffff0000c1c88000 x18: 0000000000000000 [ 45.537762][ T4811] x17: 0000000000000000 x16: ffff80001134e478 x15: 0000000000000000 [ 45.539120][ T4811] x14: 0000000000000001 x13: 1fffe000341cebab x12: 0000000000000000 [ 45.540535][ T4811] x11: ff8080000830061c x10: 0000000000000000 x9 : 9251e9ba9d693c00 [ 45.541969][ T4811] x8 : 9251e9ba9d693c00 x7 : 0000000000000001 x6 : 0000000000000001 [ 45.543455][ T4811] x5 : ffff8000206973f8 x4 : ffff80001446f500 x3 : ffff80000850f688 [ 45.544944][ T4811] x2 : 0000000000000001 x1 : 0000000100000000 x0 : 0000000000000026 [ 45.546448][ T4811] Call trace: [ 45.547062][ T4811] btrfs_quota_enable+0x1100/0x1904 [ 45.548005][ T4811] btrfs_ioctl_quota_ctl+0x13c/0x180 [ 45.548966][ T4811] btrfs_ioctl+0x96c/0xa8c [ 45.549805][ T4811] __arm64_sys_ioctl+0x14c/0x1c8 [ 45.550642][ T4811] invoke_syscall+0x98/0x28c [ 45.551475][ T4811] el0_svc_common+0x13c/0x258 [ 45.552346][ T4811] do_el0_svc+0x5c/0x140 [ 45.553138][ T4811] el0_svc+0x78/0x1d0 [ 45.553890][ T4811] el0t_64_sync_handler+0xcc/0xe4 [ 45.554794][ T4811] el0t_64_sync+0x1a0/0x1a4 [ 45.555614][ T4811] irq event stamp: 78862 [ 45.556397][ T4811] hardirqs last enabled at (78861): [] __up_console_sem+0xb4/0xfc [ 45.558148][ T4811] hardirqs last disabled at (78862): [] el1_dbg+0x24/0x80 [ 45.559715][ T4811] softirqs last enabled at (78838): [] handle_softirqs+0xa70/0xc14 [ 45.561457][ T4811] softirqs last disabled at (78819): [] __irq_exit_rcu+0x240/0x434 [ 45.563234][ T4811] ---[ end trace ddfcf5910ad65cfd ]--- [ 45.566978][ T4811] BTRFS: error (device loop0) in btrfs_quota_enable:1009: errno=-12 Out of memory [ 45.568723][ T4811] BTRFS info (device loop0): forced readonly [ 45.766014][ T4832] BTRFS: device fsid a6a605fc-d5f1-4e66-8595-3726e2b761d6 devid 1 transid 8 /dev/loop0 scanned by syz-executor.0 (4832) [ 45.769500][ T4832] BTRFS info (device loop0): using blake2b (blake2b-256-generic) checksum algorithm [ 45.771339][ T4832] BTRFS info (device loop0): using free space tree [ 45.772316][ T4832] BTRFS info (device loop0): has skinny extents [ 45.780246][ T4832] BTRFS info (device loop0): enabling ssd optimizations [ 45.783440][ T4832] FAULT_INJECTION: forcing a failure. [ 45.783440][ T4832] name failslab, interval 1, probability 0, space 0, times 0 [ 45.786029][ T4832] CPU: 0 PID: 4832 Comm: syz-executor.0 Tainted: G W syzkaller #0 [ 45.787732][ T4832] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/02/2026 [ 45.789753][ T4832] Call trace: [ 45.790408][ T4832] dump_backtrace+0x0/0x458 [ 45.791366][ T4832] show_stack+0x2c/0x3c [ 45.792244][ T4832] __dump_stack+0x30/0x40 [ 45.793165][ T4832] dump_stack_lvl+0xf4/0x15c [ 45.793992][ T4832] dump_stack+0x1c/0x5c [ 45.794779][ T4832] should_fail+0x3c8/0x520 [ 45.795600][ T4832] __should_failslab+0xbc/0x10c [ 45.796496][ T4832] should_failslab+0x10/0x28 [ 45.797346][ T4832] slab_pre_alloc_hook+0x64/0xe8 [ 45.798280][ T4832] kmem_cache_alloc+0x94/0x3d8 [ 45.799192][ T4832] start_transaction+0x530/0x1438 [ 45.800116][ T4832] btrfs_start_transaction+0x34/0x44 [ 45.800993][ T4832] btrfs_quota_enable+0x1cc/0x1904 [ 45.801900][ T4832] btrfs_ioctl_quota_ctl+0x13c/0x180 [ 45.802831][ T4832] btrfs_ioctl+0x96c/0xa8c [ 45.803624][ T4832] __arm64_sys_ioctl+0x14c/0x1c8 [ 45.804494][ T4832] invoke_syscall+0x98/0x28c [ 45.805316][ T4832] el0_svc_common+0x13c/0x258 [ 45.806143][ T4832] do_el0_svc+0x5c/0x140 [ 45.806926][ T4832] el0_svc+0x78/0x1d0 [ 45.807629][ T4832] el0t_64_sync_handler+0xcc/0xe4 [ 45.808520][ T4832] el0t_64_sync+0x1a0/0x1a4 [ 45.975117][ T4853] BTRFS: device fsid a6a605fc-d5f1-4e66-8595-3726e2b761d6 devid 1 transid 8 /dev/loop0 scanned by syz-executor.0 (4853) [ 45.978581][ T4853] BTRFS info (device loop0): using blake2b (blake2b-256-generic) checksum algorithm [ 45.980417][ T4853] BTRFS info (device loop0): using free space tree [ 45.981673][ T4853] BTRFS info (device loop0): has skinny extents [ 45.999851][ T4853] BTRFS info (device loop0): enabling ssd optimizations [ 46.003030][ T4853] FAULT_INJECTION: forcing a failure. [ 46.003030][ T4853] name failslab, interval 1, probability 0, space 0, times 0 [ 46.005126][ T4853] CPU: 1 PID: 4853 Comm: syz-executor.0 Tainted: G W syzkaller #0 [ 46.006674][ T4853] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/02/2026 [ 46.008515][ T4853] Call trace: [ 46.009114][ T4853] dump_backtrace+0x0/0x458 [ 46.009942][ T4853] show_stack+0x2c/0x3c [ 46.010675][ T4853] __dump_stack+0x30/0x40 [ 46.011430][ T4853] dump_stack_lvl+0xf4/0x15c [ 46.012201][ T4853] dump_stack+0x1c/0x5c [ 46.013056][ T4853] should_fail+0x3c8/0x520 [ 46.013919][ T4853] __should_failslab+0xbc/0x10c [ 46.014860][ T4853] should_failslab+0x10/0x28 [ 46.015832][ T4853] slab_pre_alloc_hook+0x64/0xe8 [ 46.016859][ T4853] kmem_cache_alloc_trace+0x98/0x3f0 [ 46.017911][ T4853] btrfs_alloc_root+0x8c/0x9e0 [ 46.018841][ T4853] btrfs_create_tree+0x110/0x9b4 [ 46.019813][ T4853] btrfs_quota_enable+0x370/0x1904 [ 46.020801][ T4853] btrfs_ioctl_quota_ctl+0x13c/0x180 [ 46.021806][ T4853] btrfs_ioctl+0x96c/0xa8c [ 46.022564][ T4853] __arm64_sys_ioctl+0x14c/0x1c8 [ 46.023469][ T4853] invoke_syscall+0x98/0x28c [ 46.024304][ T4853] el0_svc_common+0x13c/0x258 [ 46.025074][ T4853] do_el0_svc+0x5c/0x140 [ 46.025807][ T4853] el0_svc+0x78/0x1d0 [ 46.026485][ T4853] el0t_64_sync_handler+0xcc/0xe4 [ 46.027330][ T4853] el0t_64_sync+0x1a0/0x1a4 [ 46.028688][ T4853] ------------[ cut here ]------------ [ 46.029762][ T4853] WARNING: CPU: 1 PID: 4853 at fs/btrfs/qgroup.c:1009 btrfs_quota_enable+0x1100/0x1904 [ 46.031270][ T4853] Modules linked in: [ 46.031878][ T4853] CPU: 1 PID: 4853 Comm: syz-executor.0 Tainted: G W syzkaller #0 [ 46.033422][ T4853] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/02/2026 [ 46.035387][ T4853] pstate: 62400005 (nZCv daif +PAN -UAO +TCO -DIT -SSBS BTYPE=--) [ 46.036932][ T4853] pc : btrfs_quota_enable+0x1100/0x1904 [ 46.038000][ T4853] lr : btrfs_quota_enable+0x1100/0x1904 [ 46.039019][ T4853] sp : ffff800020fc7ae0 [ 46.039758][ T4853] x29: ffff800020fc7c40 x28: 0000000000001798 x27: ffff0000cee0a8f0 [ 46.041248][ T4853] x26: dfff800000000000 x25: fffffffffffffff4 x24: ffff0000e427e000 [ 46.042663][ T4853] x23: ffff0000d28b1f00 x22: ffff7000041f8f6c x21: 1fffe00019dc1529 [ 46.044140][ T4853] x20: ffff0000cee0a948 x19: ffff0000cf664000 x18: 0000000000000000 [ 46.045632][ T4853] x17: 0000000000000000 x16: ffff80001134e478 x15: 0000000000000000 [ 46.047080][ T4853] x14: 0000000000000001 x13: 1fffe000341d2dab x12: 0000000000000000 [ 46.048545][ T4853] x11: ff8080000830061c x10: 0000000000000000 x9 : 7a61963294a7a900 [ 46.050004][ T4853] x8 : 7a61963294a7a900 x7 : 0000000000000001 x6 : 0000000000000001 [ 46.051448][ T4853] x5 : ffff800020fc73f8 x4 : ffff80001446f500 x3 : ffff80000850f688 [ 46.052979][ T4853] x2 : 0000000000000001 x1 : 0000000100000000 x0 : 0000000000000026 [ 46.054441][ T4853] Call trace: [ 46.055039][ T4853] btrfs_quota_enable+0x1100/0x1904 [ 46.056103][ T4853] btrfs_ioctl_quota_ctl+0x13c/0x180 [ 46.057072][ T4853] btrfs_ioctl+0x96c/0xa8c [ 46.057897][ T4853] __arm64_sys_ioctl+0x14c/0x1c8 [ 46.058773][ T4853] invoke_syscall+0x98/0x28c [ 46.059634][ T4853] el0_svc_common+0x13c/0x258 [ 46.060529][ T4853] do_el0_svc+0x5c/0x140 [ 46.061272][ T4853] el0_svc+0x78/0x1d0 [ 46.061986][ T4853] el0t_64_sync_handler+0xcc/0xe4 [ 46.062911][ T4853] el0t_64_sync+0x1a0/0x1a4 [ 46.063753][ T4853] irq event stamp: 78760 [ 46.064541][ T4853] hardirqs last enabled at (78759): [] __up_console_sem+0xb4/0xfc [ 46.066354][ T4853] hardirqs last disabled at (78760): [] el1_dbg+0x24/0x80 [ 46.067858][ T4853] softirqs last enabled at (78740): [] handle_softirqs+0xa70/0xc14 [ 46.069492][ T4853] softirqs last disabled at (78667): [] __irq_exit_rcu+0x240/0x434 [ 46.071170][ T4853] ---[ end trace ddfcf5910ad65cfe ]--- [ 46.072686][ T4853] BTRFS: error (device loop0) in btrfs_quota_enable:1009: errno=-12 Out of memory [ 46.074369][ T4853] BTRFS info (device loop0): forced readonly [ 46.254810][ T4874] BTRFS: device fsid a6a605fc-d5f1-4e66-8595-3726e2b761d6 devid 1 transid 8 /dev/loop0 scanned by syz-executor.0 (4874) [ 46.259025][ T4874] BTRFS info (device loop0): using blake2b (blake2b-256-generic) checksum algorithm [ 46.260891][ T4874] BTRFS info (device loop0): using free space tree [ 46.262279][ T4874] BTRFS info (device loop0): has skinny extents [ 46.277955][ T4874] BTRFS info (device loop0): enabling ssd optimizations [ 46.282816][ T4874] FAULT_INJECTION: forcing a failure. [ 46.282816][ T4874] name failslab, interval 1, probability 0, space 0, times 0 [ 46.285113][ T4874] CPU: 1 PID: 4874 Comm: syz-executor.0 Tainted: G W syzkaller #0 [ 46.286827][ T4874] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/02/2026 [ 46.288811][ T4874] Call trace: [ 46.289481][ T4874] dump_backtrace+0x0/0x458 [ 46.290410][ T4874] show_stack+0x2c/0x3c [ 46.291253][ T4874] __dump_stack+0x30/0x40 [ 46.292200][ T4874] dump_stack_lvl+0xf4/0x15c [ 46.293000][ T4874] dump_stack+0x1c/0x5c [ 46.293706][ T4874] should_fail+0x3c8/0x520 [ 46.294480][ T4874] __should_failslab+0xbc/0x10c [ 46.295347][ T4874] should_failslab+0x10/0x28 [ 46.296136][ T4874] slab_pre_alloc_hook+0x64/0xe8 [ 46.296990][ T4874] kmem_cache_alloc_trace+0x98/0x3f0 [ 46.297893][ T4874] btrfs_alloc_root+0x8c/0x9e0 [ 46.298845][ T4874] btrfs_create_tree+0x110/0x9b4 [ 46.299770][ T4874] btrfs_quota_enable+0x370/0x1904 [ 46.300656][ T4874] btrfs_ioctl_quota_ctl+0x13c/0x180 [ 46.301586][ T4874] btrfs_ioctl+0x96c/0xa8c [ 46.302364][ T4874] __arm64_sys_ioctl+0x14c/0x1c8 [ 46.303248][ T4874] invoke_syscall+0x98/0x28c [ 46.304039][ T4874] el0_svc_common+0x13c/0x258 [ 46.304878][ T4874] do_el0_svc+0x5c/0x140 [ 46.305589][ T4874] el0_svc+0x78/0x1d0 [ 46.306260][ T4874] el0t_64_sync_handler+0xcc/0xe4 [ 46.307157][ T4874] el0t_64_sync+0x1a0/0x1a4 [ 46.309415][ T4874] ------------[ cut here ]------------ [ 46.310512][ T4874] WARNING: CPU: 1 PID: 4874 at fs/btrfs/qgroup.c:1009 btrfs_quota_enable+0x1100/0x1904 [ 46.312261][ T4874] Modules linked in: [ 46.312959][ T4874] CPU: 1 PID: 4874 Comm: syz-executor.0 Tainted: G W syzkaller #0 [ 46.314599][ T4874] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/02/2026 [ 46.316481][ T4874] pstate: 62400005 (nZCv daif +PAN -UAO +TCO -DIT -SSBS BTYPE=--) [ 46.317973][ T4874] pc : btrfs_quota_enable+0x1100/0x1904 [ 46.319006][ T4874] lr : btrfs_quota_enable+0x1100/0x1904 [ 46.320036][ T4874] sp : ffff800020fc7ae0 [ 46.320816][ T4874] x29: ffff800020fc7c40 x28: 0000000000001798 x27: ffff0000cee0aa50 [ 46.322345][ T4874] x26: dfff800000000000 x25: fffffffffffffff4 x24: ffff0000c2544000 [ 46.324043][ T4874] x23: ffff0000c0bade00 x22: ffff7000041f8f6c x21: 1fffe00019dc1555 [ 46.325711][ T4874] x20: ffff0000cee0aaa8 x19: ffff0000cf664000 x18: 0000000000000000 [ 46.327231][ T4874] x17: 0000000000000000 x16: ffff80001134e478 x15: 0000000000000000 [ 46.328674][ T4874] x14: 0000000000000001 x13: 1fffe000341d2dab x12: 0000000000000000 [ 46.330091][ T4874] x11: ff8080000830061c x10: 0000000000000000 x9 : dcfc7f3dc8cffd00 [ 46.331730][ T4874] x8 : dcfc7f3dc8cffd00 x7 : 0000000000000001 x6 : 0000000000000001 [ 46.333299][ T4874] x5 : ffff800020fc73f8 x4 : ffff80001446f500 x3 : ffff80000850f688 [ 46.334839][ T4874] x2 : 0000000000000001 x1 : 0000000100000000 x0 : 0000000000000026 [ 46.336397][ T4874] Call trace: [ 46.336980][ T4874] btrfs_quota_enable+0x1100/0x1904 [ 46.337927][ T4874] btrfs_ioctl_quota_ctl+0x13c/0x180 [ 46.338860][ T4874] btrfs_ioctl+0x96c/0xa8c [ 46.339610][ T4874] __arm64_sys_ioctl+0x14c/0x1c8 [ 46.340468][ T4874] invoke_syscall+0x98/0x28c [ 46.341261][ T4874] el0_svc_common+0x13c/0x258 [ 46.342120][ T4874] do_el0_svc+0x5c/0x140 [ 46.342903][ T4874] el0_svc+0x78/0x1d0 [ 46.343677][ T4874] el0t_64_sync_handler+0xcc/0xe4 [ 46.344645][ T4874] el0t_64_sync+0x1a0/0x1a4 [ 46.345523][ T4874] irq event stamp: 78456 [ 46.346079][ T3622] Bluetooth: hci0: command 0x040f tx timeout [ 46.346291][ T4874] hardirqs last enabled at (78455): [] __up_console_sem+0xb4/0xfc [ 46.349060][ T4874] hardirqs last disabled at (78456): [] el1_dbg+0x24/0x80 [ 46.350473][ T4874] softirqs last enabled at (78436): [] handle_softirqs+0xa70/0xc14 [ 46.352123][ T4874] softirqs last disabled at (78417): [] __irq_exit_rcu+0x240/0x434 [ 46.353856][ T4874] ---[ end trace ddfcf5910ad65cff ]--- [ 46.356235][ T4874] BTRFS: error (device loop0) in btrfs_quota_enable:1009: errno=-12 Out of memory [ 46.357762][ T4874] BTRFS info (device loop0): forced readonly [ 46.543836][ T4895] set_capacity_and_notify: 7 callbacks suppressed [ 46.543845][ T4895] loop0: detected capacity change from 0 to 32768 [ 46.547427][ T4895] BTRFS: device fsid a6a605fc-d5f1-4e66-8595-3726e2b761d6 devid 1 transid 8 /dev/loop0 scanned by syz-executor.0 (4895) [ 46.550609][ T4895] BTRFS info (device loop0): using blake2b (blake2b-256-generic) checksum algorithm [ 46.552251][ T4895] BTRFS info (device loop0): using free space tree [ 46.553420][ T4895] BTRFS info (device loop0): has skinny extents [ 46.564761][ T4895] BTRFS info (device loop0): enabling ssd optimizations [ 46.568297][ T4895] FAULT_INJECTION: forcing a failure. [ 46.568297][ T4895] name failslab, interval 1, probability 0, space 0, times 0 [ 46.570567][ T4895] CPU: 1 PID: 4895 Comm: syz-executor.0 Tainted: G W syzkaller #0 [ 46.572100][ T4895] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/02/2026 [ 46.573908][ T4895] Call trace: [ 46.574620][ T4895] dump_backtrace+0x0/0x458 [ 46.575604][ T4895] show_stack+0x2c/0x3c [ 46.576440][ T4895] __dump_stack+0x30/0x40 [ 46.577312][ T4895] dump_stack_lvl+0xf4/0x15c [ 46.578219][ T4895] dump_stack+0x1c/0x5c [ 46.579018][ T4895] should_fail+0x3c8/0x520 [ 46.579819][ T4895] __should_failslab+0xbc/0x10c [ 46.580723][ T4895] should_failslab+0x10/0x28 [ 46.581622][ T4895] slab_pre_alloc_hook+0x64/0xe8 [ 46.582523][ T4895] kmem_cache_alloc_trace+0x98/0x3f0 [ 46.583453][ T4895] btrfs_alloc_root+0x8c/0x9e0 [ 46.584304][ T4895] btrfs_create_tree+0x110/0x9b4 [ 46.585176][ T4895] btrfs_quota_enable+0x370/0x1904 [ 46.586081][ T4895] btrfs_ioctl_quota_ctl+0x13c/0x180 [ 46.587014][ T4895] btrfs_ioctl+0x96c/0xa8c [ 46.587793][ T4895] __arm64_sys_ioctl+0x14c/0x1c8 [ 46.588710][ T4895] invoke_syscall+0x98/0x28c [ 46.589552][ T4895] el0_svc_common+0x13c/0x258 [ 46.590437][ T4895] do_el0_svc+0x5c/0x140 [ 46.591250][ T4895] el0_svc+0x78/0x1d0 [ 46.591985][ T4895] el0t_64_sync_handler+0xcc/0xe4 [ 46.592905][ T4895] el0t_64_sync+0x1a0/0x1a4 [ 46.595770][ T4895] ------------[ cut here ]------------ [ 46.596987][ T4895] WARNING: CPU: 1 PID: 4895 at fs/btrfs/qgroup.c:1009 btrfs_quota_enable+0x1100/0x1904 [ 46.598669][ T4895] Modules linked in: [ 46.599396][ T4895] CPU: 1 PID: 4895 Comm: syz-executor.0 Tainted: G W syzkaller #0 [ 46.601177][ T4895] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/02/2026 [ 46.603027][ T4895] pstate: 62400005 (nZCv daif +PAN -UAO +TCO -DIT -SSBS BTYPE=--) [ 46.604418][ T4895] pc : btrfs_quota_enable+0x1100/0x1904 [ 46.605411][ T4895] lr : btrfs_quota_enable+0x1100/0x1904 [ 46.606389][ T4895] sp : ffff800021017ae0 [ 46.607116][ T4895] x29: ffff800021017c40 x28: 0000000000001798 x27: ffff0000cee0abb0 [ 46.608507][ T4895] x26: dfff800000000000 x25: fffffffffffffff4 x24: ffff0000c92d2000 [ 46.609905][ T4895] x23: ffff0000d27f2600 x22: ffff700004202f6c x21: 1fffe00019dc1581 [ 46.611431][ T4895] x20: ffff0000cee0ac08 x19: ffff0000dbf20000 x18: 0000000000000000 [ 46.612948][ T4895] x17: 0000000000000000 x16: ffff80001134e478 x15: 0000000000000000 [ 46.614341][ T4895] x14: 0000000000000001 x13: 1fffe000341d2dab x12: 0000000000000000 [ 46.615676][ T4895] x11: ff8080000830061c x10: 0000000000000000 x9 : ad8612bc110d3d00 [ 46.617069][ T4895] x8 : ad8612bc110d3d00 x7 : 0000000000000001 x6 : 0000000000000001 [ 46.618450][ T4895] x5 : ffff8000210173f8 x4 : ffff80001446f500 x3 : ffff80000850f688 [ 46.619822][ T4895] x2 : 0000000000000001 x1 : 0000000100000000 x0 : 0000000000000026 [ 46.621239][ T4895] Call trace: [ 46.621772][ T4895] btrfs_quota_enable+0x1100/0x1904 [ 46.622668][ T4895] btrfs_ioctl_quota_ctl+0x13c/0x180 [ 46.623609][ T4895] btrfs_ioctl+0x96c/0xa8c [ 46.624391][ T4895] __arm64_sys_ioctl+0x14c/0x1c8 [ 46.625219][ T4895] invoke_syscall+0x98/0x28c [ 46.626008][ T4895] el0_svc_common+0x13c/0x258 [ 46.626848][ T4895] do_el0_svc+0x5c/0x140 [ 46.627586][ T4895] el0_svc+0x78/0x1d0 [ 46.628253][ T4895] el0t_64_sync_handler+0xcc/0xe4 [ 46.629140][ T4895] el0t_64_sync+0x1a0/0x1a4 [ 46.630016][ T4895] irq event stamp: 78888 [ 46.630754][ T4895] hardirqs last enabled at (78887): [] __up_console_sem+0xb4/0xfc [ 46.632460][ T4895] hardirqs last disabled at (78888): [] el1_dbg+0x24/0x80 [ 46.633997][ T4895] softirqs last enabled at (78862): [] handle_softirqs+0xa70/0xc14 [ 46.635697][ T4895] softirqs last disabled at (78803): [] __irq_exit_rcu+0x240/0x434 [ 46.637346][ T4895] ---[ end trace ddfcf5910ad65d00 ]--- [ 46.639187][ T4895] BTRFS: error (device loop0) in btrfs_quota_enable:1009: errno=-12 Out of memory [ 46.640653][ T4895] BTRFS info (device loop0): forced readonly [ 46.815145][ T4916] loop0: detected capacity change from 0 to 32768 [ 46.817858][ T4916] BTRFS: device fsid a6a605fc-d5f1-4e66-8595-3726e2b761d6 devid 1 transid 8 /dev/loop0 scanned by syz-executor.0 (4916) [ 46.821269][ T4916] BTRFS info (device loop0): using blake2b (blake2b-256-generic) checksum algorithm [ 46.823144][ T4916] BTRFS info (device loop0): using free space tree [ 46.824303][ T4916] BTRFS info (device loop0): has skinny extents [ 46.843789][ T4916] BTRFS info (device loop0): enabling ssd optimizations [ 46.847299][ T4916] FAULT_INJECTION: forcing a failure. [ 46.847299][ T4916] name failslab, interval 1, probability 0, space 0, times 0 [ 46.849708][ T4916] CPU: 1 PID: 4916 Comm: syz-executor.0 Tainted: G W syzkaller #0 [ 46.851174][ T4916] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/02/2026 [ 46.852997][ T4916] Call trace: [ 46.853607][ T4916] dump_backtrace+0x0/0x458 [ 46.854447][ T4916] show_stack+0x2c/0x3c [ 46.855146][ T4916] __dump_stack+0x30/0x40 [ 46.855916][ T4916] dump_stack_lvl+0xf4/0x15c [ 46.856703][ T4916] dump_stack+0x1c/0x5c [ 46.857395][ T4916] should_fail+0x3c8/0x520 [ 46.858314][ T4916] __should_failslab+0xbc/0x10c [ 46.859220][ T4916] should_failslab+0x10/0x28 [ 46.860020][ T4916] slab_pre_alloc_hook+0x64/0xe8 [ 46.860939][ T4916] kmem_cache_alloc_trace+0x98/0x3f0 [ 46.861823][ T4916] btrfs_alloc_root+0x8c/0x9e0 [ 46.862632][ T4916] btrfs_create_tree+0x110/0x9b4 [ 46.863539][ T4916] btrfs_quota_enable+0x370/0x1904 [ 46.864398][ T4916] btrfs_ioctl_quota_ctl+0x13c/0x180 [ 46.865292][ T4916] btrfs_ioctl+0x96c/0xa8c [ 46.866047][ T4916] __arm64_sys_ioctl+0x14c/0x1c8 [ 46.866878][ T4916] invoke_syscall+0x98/0x28c [ 46.867656][ T4916] el0_svc_common+0x13c/0x258 [ 46.868478][ T4916] do_el0_svc+0x5c/0x140 [ 46.869182][ T4916] el0_svc+0x78/0x1d0 [ 46.869870][ T4916] el0t_64_sync_handler+0xcc/0xe4 [ 46.870749][ T4916] el0t_64_sync+0x1a0/0x1a4 [ 46.872386][ T4916] ------------[ cut here ]------------ [ 46.873451][ T4916] WARNING: CPU: 1 PID: 4916 at fs/btrfs/qgroup.c:1009 btrfs_quota_enable+0x1100/0x1904 [ 46.875179][ T4916] Modules linked in: [ 46.875990][ T4916] CPU: 1 PID: 4916 Comm: syz-executor.0 Tainted: G W syzkaller #0 [ 46.877716][ T4916] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/02/2026 [ 46.879495][ T4916] pstate: 62400005 (nZCv daif +PAN -UAO +TCO -DIT -SSBS BTYPE=--) [ 46.881000][ T4916] pc : btrfs_quota_enable+0x1100/0x1904 [ 46.882071][ T4916] lr : btrfs_quota_enable+0x1100/0x1904 [ 46.883046][ T4916] sp : ffff800021237ae0 [ 46.883751][ T4916] x29: ffff800021237c40 x28: 0000000000001798 x27: ffff0000cee0ad10 [ 46.885249][ T4916] x26: dfff800000000000 x25: fffffffffffffff4 x24: ffff0000c6634000 [ 46.886655][ T4916] x23: ffff0000cb52c300 x22: ffff700004246f6c x21: 1fffe00019dc15ad [ 46.888080][ T4916] x20: ffff0000cee0ad68 x19: ffff0000d6b8c000 x18: 0000000000000000 [ 46.889504][ T4916] x17: 0000000000000000 x16: ffff80001134e478 x15: 0000000000000000 [ 46.891018][ T4916] x14: 0000000000000001 x13: 1fffe000341d2dab x12: 0000000000000000 [ 46.892535][ T4916] x11: ff8080000830061c x10: 0000000000000000 x9 : d23f241ef9327d00 [ 46.893953][ T4916] x8 : d23f241ef9327d00 x7 : 0000000000000001 x6 : 0000000000000001 [ 46.895376][ T4916] x5 : ffff8000212373f8 x4 : ffff80001446f500 x3 : ffff80000850f688 [ 46.896771][ T4916] x2 : 0000000000000001 x1 : 0000000100000000 x0 : 0000000000000026 [ 46.898160][ T4916] Call trace: [ 46.898716][ T4916] btrfs_quota_enable+0x1100/0x1904 [ 46.899673][ T4916] btrfs_ioctl_quota_ctl+0x13c/0x180 [ 46.900643][ T4916] btrfs_ioctl+0x96c/0xa8c [ 46.901431][ T4916] __arm64_sys_ioctl+0x14c/0x1c8 [ 46.902273][ T4916] invoke_syscall+0x98/0x28c [ 46.903079][ T4916] el0_svc_common+0x13c/0x258 [ 46.903874][ T4916] do_el0_svc+0x5c/0x140 [ 46.904598][ T4916] el0_svc+0x78/0x1d0 [ 46.905347][ T4916] el0t_64_sync_handler+0xcc/0xe4 [ 46.906250][ T4916] el0t_64_sync+0x1a0/0x1a4 [ 46.907035][ T4916] irq event stamp: 78948 [ 46.907763][ T4916] hardirqs last enabled at (78947): [] __up_console_sem+0xb4/0xfc [ 46.909498][ T4916] hardirqs last disabled at (78948): [] el1_dbg+0x24/0x80 [ 46.911032][ T4916] softirqs last enabled at (78928): [] handle_softirqs+0xa70/0xc14 [ 46.912775][ T4916] softirqs last disabled at (78903): [] __irq_exit_rcu+0x240/0x434 [ 46.914512][ T4916] ---[ end trace ddfcf5910ad65d01 ]--- [ 46.917070][ T4916] BTRFS: error (device loop0) in btrfs_quota_enable:1009: errno=-12 Out of memory [ 46.918833][ T4916] BTRFS info (device loop0): forced readonly [ 47.112785][ T4937] loop0: detected capacity change from 0 to 32768 [ 47.115411][ T4937] BTRFS: device fsid a6a605fc-d5f1-4e66-8595-3726e2b761d6 devid 1 transid 8 /dev/loop0 scanned by syz-executor.0 (4937) [ 47.119829][ T4937] BTRFS info (device loop0): using blake2b (blake2b-256-generic) checksum algorithm [ 47.121757][ T4937] BTRFS info (device loop0): using free space tree [ 47.123035][ T4937] BTRFS info (device loop0): has skinny extents [ 47.143051][ T4937] BTRFS info (device loop0): enabling ssd optimizations [ 47.147259][ T4937] FAULT_INJECTION: forcing a failure. [ 47.147259][ T4937] name failslab, interval 1, probability 0, space 0, times 0 [ 47.149671][ T4937] CPU: 1 PID: 4937 Comm: syz-executor.0 Tainted: G W syzkaller #0 [ 47.151228][ T4937] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/02/2026 [ 47.152954][ T4937] Call trace: [ 47.153521][ T4937] dump_backtrace+0x0/0x458 [ 47.154265][ T4937] show_stack+0x2c/0x3c [ 47.154973][ T4937] __dump_stack+0x30/0x40 [ 47.155721][ T4937] dump_stack_lvl+0xf4/0x15c [ 47.156482][ T4937] dump_stack+0x1c/0x5c [ 47.157149][ T4937] should_fail+0x3c8/0x520 [ 47.157893][ T4937] __should_failslab+0xbc/0x10c [ 47.158758][ T4937] should_failslab+0x10/0x28 [ 47.159556][ T4937] slab_pre_alloc_hook+0x64/0xe8 [ 47.160579][ T4937] kmem_cache_alloc_trace+0x98/0x3f0 [ 47.161563][ T4937] btrfs_alloc_root+0x8c/0x9e0 [ 47.162447][ T4937] btrfs_create_tree+0x110/0x9b4 [ 47.163458][ T4937] btrfs_quota_enable+0x370/0x1904 [ 47.164494][ T4937] btrfs_ioctl_quota_ctl+0x13c/0x180 [ 47.165592][ T4937] btrfs_ioctl+0x96c/0xa8c [ 47.166376][ T4937] __arm64_sys_ioctl+0x14c/0x1c8 [ 47.167254][ T4937] invoke_syscall+0x98/0x28c [ 47.168129][ T4937] el0_svc_common+0x13c/0x258 [ 47.168990][ T4937] do_el0_svc+0x5c/0x140 [ 47.169807][ T4937] el0_svc+0x78/0x1d0 [ 47.170552][ T4937] el0t_64_sync_handler+0xcc/0xe4 [ 47.171472][ T4937] el0t_64_sync+0x1a0/0x1a4 [ 47.173140][ T4937] ------------[ cut here ]------------ [ 47.174264][ T4937] WARNING: CPU: 1 PID: 4937 at fs/btrfs/qgroup.c:1009 btrfs_quota_enable+0x1100/0x1904 [ 47.175957][ T4937] Modules linked in: [ 47.176684][ T4937] CPU: 1 PID: 4937 Comm: syz-executor.0 Tainted: G W syzkaller #0 [ 47.178252][ T4937] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/02/2026 [ 47.180117][ T4937] pstate: 62400005 (nZCv daif +PAN -UAO +TCO -DIT -SSBS BTYPE=--) [ 47.181573][ T4937] pc : btrfs_quota_enable+0x1100/0x1904 [ 47.182579][ T4937] lr : btrfs_quota_enable+0x1100/0x1904 [ 47.183638][ T4937] sp : ffff800021237ae0 [ 47.184401][ T4937] x29: ffff800021237c40 x28: 0000000000001798 x27: ffff0000cee0ae70 [ 47.185863][ T4937] x26: dfff800000000000 x25: fffffffffffffff4 x24: ffff0000e26c0000 [ 47.187420][ T4937] x23: ffff0000cdc9ab00 x22: ffff700004246f6c x21: 1fffe00019dc15d9 [ 47.188889][ T4937] x20: ffff0000cee0aec8 x19: ffff0000cd844000 x18: 0000000000000000 [ 47.190283][ T4937] x17: 0000000000000000 x16: ffff80001134e478 x15: 0000000000000000 [ 47.191956][ T4937] x14: 0000000000000001 x13: 1fffe000341d2dab x12: 0000000000000000 [ 47.193507][ T4937] x11: ff8080000830061c x10: 0000000000000000 x9 : ba36b805218c2400 [ 47.194992][ T4937] x8 : ba36b805218c2400 x7 : 0000000000000001 x6 : 0000000000000001 [ 47.196427][ T4937] x5 : ffff8000212373f8 x4 : ffff80001446f500 x3 : ffff80000850f688 [ 47.197863][ T4937] x2 : 0000000000000001 x1 : 0000000100000000 x0 : 0000000000000026 [ 47.199308][ T4937] Call trace: [ 47.199969][ T4937] btrfs_quota_enable+0x1100/0x1904 [ 47.200941][ T4937] btrfs_ioctl_quota_ctl+0x13c/0x180 [ 47.201992][ T4937] btrfs_ioctl+0x96c/0xa8c [ 47.202949][ T4937] __arm64_sys_ioctl+0x14c/0x1c8 [ 47.203942][ T4937] invoke_syscall+0x98/0x28c [ 47.204795][ T4937] el0_svc_common+0x13c/0x258 [ 47.205783][ T4937] do_el0_svc+0x5c/0x140 [ 47.206660][ T4937] el0_svc+0x78/0x1d0 [ 47.207462][ T4937] el0t_64_sync_handler+0xcc/0xe4 [ 47.208474][ T4937] el0t_64_sync+0x1a0/0x1a4 [ 47.209357][ T4937] irq event stamp: 79058 [ 47.210151][ T4937] hardirqs last enabled at (79057): [] __up_console_sem+0xb4/0xfc [ 47.211989][ T4937] hardirqs last disabled at (79058): [] el1_dbg+0x24/0x80 [ 47.213731][ T4937] softirqs last enabled at (79034): [] handle_softirqs+0xa70/0xc14 [ 47.215758][ T4937] softirqs last disabled at (79013): [] __irq_exit_rcu+0x240/0x434 [ 47.217689][ T4937] ---[ end trace ddfcf5910ad65d02 ]--- [ 47.219703][ T4937] BTRFS: error (device loop0) in btrfs_quota_enable:1009: errno=-12 Out of memory [ 47.221393][ T4937] BTRFS info (device loop0): forced readonly [ 47.373052][ T4958] loop0: detected capacity change from 0 to 32768 [ 47.376493][ T4958] BTRFS: device fsid a6a605fc-d5f1-4e66-8595-3726e2b761d6 devid 1 transid 8 /dev/loop0 scanned by syz-executor.0 (4958) [ 47.385775][ T4958] BTRFS info (device loop0): using blake2b (blake2b-256-generic) checksum algorithm [ 47.387935][ T4958] BTRFS info (device loop0): using free space tree [ 47.389643][ T4958] BTRFS info (device loop0): has skinny extents [ 47.408296][ T4958] BTRFS info (device loop0): enabling ssd optimizations [ 47.412146][ T4958] FAULT_INJECTION: forcing a failure. [ 47.412146][ T4958] name fail_page_alloc, interval 1, probability 0, space 0, times 1 [ 47.414611][ T4958] CPU: 1 PID: 4958 Comm: syz-executor.0 Tainted: G W syzkaller #0 [ 47.416263][ T4958] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/02/2026 [ 47.418092][ T4958] Call trace: [ 47.418661][ T4958] dump_backtrace+0x0/0x458 [ 47.419456][ T4958] show_stack+0x2c/0x3c [ 47.420227][ T4958] __dump_stack+0x30/0x40 [ 47.421058][ T4958] dump_stack_lvl+0xf4/0x15c [ 47.421919][ T4958] dump_stack+0x1c/0x5c [ 47.422668][ T4958] should_fail+0x3c8/0x520 [ 47.423497][ T4958] should_fail_alloc_page+0x74/0xa8 [ 47.424457][ T4958] prepare_alloc_pages+0x160/0x460 [ 47.425384][ T4958] __alloc_pages+0x108/0x474 [ 47.426186][ T4958] alloc_pages+0x34c/0x5c0 [ 47.427003][ T4958] new_slab+0xdc/0x53c [ 47.427749][ T4958] ___slab_alloc+0x6ac/0xd84 [ 47.428586][ T4958] __slab_alloc+0x68/0xc0 [ 47.429349][ T4958] kmem_cache_alloc+0x2a8/0x3d8 [ 47.430218][ T4958] start_transaction+0x530/0x1438 [ 47.431087][ T4958] btrfs_start_transaction+0x34/0x44 [ 47.432091][ T4958] btrfs_quota_enable+0x1cc/0x1904 [ 47.433069][ T4958] btrfs_ioctl_quota_ctl+0x13c/0x180 [ 47.434021][ T4958] btrfs_ioctl+0x96c/0xa8c [ 47.434782][ T4958] __arm64_sys_ioctl+0x14c/0x1c8 [ 47.435652][ T4958] invoke_syscall+0x98/0x28c [ 47.436466][ T4958] el0_svc_common+0x13c/0x258 [ 47.437346][ T4958] do_el0_svc+0x5c/0x140 [ 47.438125][ T4958] el0_svc+0x78/0x1d0 [ 47.438869][ T4958] el0t_64_sync_handler+0xcc/0xe4 [ 47.439754][ T4958] el0t_64_sync+0x1a0/0x1a4 [ 47.454940][ T1677] BTRFS info (device loop0): qgroup scan completed (inconsistency flag cleared) [ 47.623861][ T4979] loop0: detected capacity change from 0 to 32768 [ 47.630092][ T4979] BTRFS: device fsid a6a605fc-d5f1-4e66-8595-3726e2b761d6 devid 1 transid 8 /dev/loop0 scanned by syz-executor.0 (4979) [ 47.634725][ T4979] BTRFS info (device loop0): using blake2b (blake2b-256-generic) checksum algorithm [ 47.637003][ T4979] BTRFS info (device loop0): using free space tree [ 47.638168][ T4979] BTRFS info (device loop0): has skinny extents [ 47.654640][ T4979] BTRFS info (device loop0): enabling ssd optimizations [ 47.659098][ T4979] FAULT_INJECTION: forcing a failure. [ 47.659098][ T4979] name failslab, interval 1, probability 0, space 0, times 0 [ 47.661443][ T4979] CPU: 1 PID: 4979 Comm: syz-executor.0 Tainted: G W syzkaller #0 [ 47.663154][ T4979] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/02/2026 [ 47.665250][ T4979] Call trace: [ 47.665820][ T4979] dump_backtrace+0x0/0x458 [ 47.666642][ T4979] show_stack+0x2c/0x3c [ 47.667371][ T4979] __dump_stack+0x30/0x40 [ 47.668141][ T4979] dump_stack_lvl+0xf4/0x15c [ 47.669008][ T4979] dump_stack+0x1c/0x5c [ 47.669913][ T4979] should_fail+0x3c8/0x520 [ 47.670854][ T4979] __should_failslab+0xbc/0x10c [ 47.671888][ T4979] should_failslab+0x10/0x28 [ 47.672863][ T4979] slab_pre_alloc_hook+0x64/0xe8 [ 47.673906][ T4979] kmem_cache_alloc_trace+0x98/0x3f0 [ 47.675056][ T4979] btrfs_alloc_root+0x8c/0x9e0 [ 47.676124][ T4979] btrfs_create_tree+0x110/0x9b4 [ 47.677123][ T4979] btrfs_quota_enable+0x370/0x1904 [ 47.678164][ T4979] btrfs_ioctl_quota_ctl+0x13c/0x180 [ 47.679134][ T4979] btrfs_ioctl+0x96c/0xa8c [ 47.679912][ T4979] __arm64_sys_ioctl+0x14c/0x1c8 [ 47.680794][ T4979] invoke_syscall+0x98/0x28c [ 47.681554][ T4979] el0_svc_common+0x13c/0x258 [ 47.682342][ T4979] do_el0_svc+0x5c/0x140 [ 47.683071][ T4979] el0_svc+0x78/0x1d0 [ 47.683782][ T4979] el0t_64_sync_handler+0xcc/0xe4 [ 47.684612][ T4979] el0t_64_sync+0x1a0/0x1a4 [ 47.686716][ T4979] ------------[ cut here ]------------ [ 47.687743][ T4979] WARNING: CPU: 1 PID: 4979 at fs/btrfs/qgroup.c:1009 btrfs_quota_enable+0x1100/0x1904 [ 47.689504][ T4979] Modules linked in: [ 47.690265][ T4979] CPU: 1 PID: 4979 Comm: syz-executor.0 Tainted: G W syzkaller #0 [ 47.691985][ T4979] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/02/2026 [ 47.693887][ T4979] pstate: 62400005 (nZCv daif +PAN -UAO +TCO -DIT -SSBS BTYPE=--) [ 47.695242][ T4979] pc : btrfs_quota_enable+0x1100/0x1904 [ 47.696157][ T4979] lr : btrfs_quota_enable+0x1100/0x1904 [ 47.697325][ T4979] sp : ffff800021697ae0 [ 47.698193][ T4979] x29: ffff800021697c40 x28: 0000000000001798 x27: ffff0000dcff9370 [ 47.699855][ T4979] x26: dfff800000000000 x25: fffffffffffffff4 x24: ffff0000d7d8e000 [ 47.701272][ T4979] x23: ffff0000d4555b00 x22: ffff7000042d2f6c x21: 1fffe0001b9ff279 [ 47.702727][ T4979] x20: ffff0000dcff93c8 x19: ffff0000dad3c000 x18: 0000000000000000 [ 47.704137][ T4979] x17: 0000000000000000 x16: ffff80001134e478 x15: 0000000000000000 [ 47.705895][ T4979] x14: 0000000000000001 x13: 1fffe000341d2dab x12: 0000000000000000 [ 47.707608][ T4979] x11: ff8080000830061c x10: 0000000000000000 x9 : c96a6c15af9b4700 [ 47.709360][ T4979] x8 : c96a6c15af9b4700 x7 : 0000000000000001 x6 : 0000000000000001 [ 47.711035][ T4979] x5 : ffff8000216973f8 x4 : ffff80001446f500 x3 : ffff80000850f688 [ 47.712459][ T4979] x2 : 0000000000000001 x1 : 0000000100000000 x0 : 0000000000000026 [ 47.714112][ T4979] Call trace: [ 47.714705][ T4979] btrfs_quota_enable+0x1100/0x1904 [ 47.715658][ T4979] btrfs_ioctl_quota_ctl+0x13c/0x180 [ 47.716595][ T4979] btrfs_ioctl+0x96c/0xa8c [ 47.717391][ T4979] __arm64_sys_ioctl+0x14c/0x1c8 [ 47.718290][ T4979] invoke_syscall+0x98/0x28c [ 47.719118][ T4979] el0_svc_common+0x13c/0x258 [ 47.719897][ T4979] do_el0_svc+0x5c/0x140 [ 47.720654][ T4979] el0_svc+0x78/0x1d0 [ 47.721362][ T4979] el0t_64_sync_handler+0xcc/0xe4 [ 47.722300][ T4979] el0t_64_sync+0x1a0/0x1a4 [ 47.723281][ T4979] irq event stamp: 79268 [ 47.724119][ T4979] hardirqs last enabled at (79267): [] __up_console_sem+0xb4/0xfc [ 47.726060][ T4979] hardirqs last disabled at (79268): [] el1_dbg+0x24/0x80 [ 47.727632][ T4979] softirqs last enabled at (79248): [] handle_softirqs+0xa70/0xc14 [ 47.729388][ T4979] softirqs last disabled at (79233): [] __irq_exit_rcu+0x240/0x434 [ 47.731137][ T4979] ---[ end trace ddfcf5910ad65d03 ]--- [ 47.733368][ T4979] BTRFS: error (device loop0) in btrfs_quota_enable:1009: errno=-12 Out of memory [ 47.734965][ T4979] BTRFS info (device loop0): forced readonly [ 47.902015][ T5000] loop0: detected capacity change from 0 to 32768 [ 47.904482][ T5000] BTRFS: device fsid a6a605fc-d5f1-4e66-8595-3726e2b761d6 devid 1 transid 8 /dev/loop0 scanned by syz-executor.0 (5000) [ 47.908348][ T5000] BTRFS info (device loop0): using blake2b (blake2b-256-generic) checksum algorithm [ 47.910329][ T5000] BTRFS info (device loop0): using free space tree [ 47.911584][ T5000] BTRFS info (device loop0): has skinny extents [ 47.920363][ T5000] BTRFS info (device loop0): enabling ssd optimizations [ 47.924191][ T5000] FAULT_INJECTION: forcing a failure. [ 47.924191][ T5000] name failslab, interval 1, probability 0, space 0, times 0 [ 47.926691][ T5000] CPU: 0 PID: 5000 Comm: syz-executor.0 Tainted: G W syzkaller #0 [ 47.928423][ T5000] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/02/2026 [ 47.930473][ T5000] Call trace: [ 47.931062][ T5000] dump_backtrace+0x0/0x458 [ 47.931991][ T5000] show_stack+0x2c/0x3c [ 47.932855][ T5000] __dump_stack+0x30/0x40 [ 47.933757][ T5000] dump_stack_lvl+0xf4/0x15c [ 47.934717][ T5000] dump_stack+0x1c/0x5c [ 47.935626][ T5000] should_fail+0x3c8/0x520 [ 47.936496][ T5000] __should_failslab+0xbc/0x10c [ 47.937452][ T5000] should_failslab+0x10/0x28 [ 47.938342][ T5000] slab_pre_alloc_hook+0x64/0xe8 [ 47.939242][ T5000] kmem_cache_alloc+0x94/0x3d8 [ 47.940234][ T5000] start_transaction+0x530/0x1438 [ 47.941291][ T5000] btrfs_start_transaction+0x34/0x44 [ 47.942272][ T5000] btrfs_quota_enable+0x1cc/0x1904 [ 47.943154][ T5000] btrfs_ioctl_quota_ctl+0x13c/0x180 [ 47.944103][ T5000] btrfs_ioctl+0x96c/0xa8c [ 47.944868][ T5000] __arm64_sys_ioctl+0x14c/0x1c8 [ 47.945707][ T5000] invoke_syscall+0x98/0x28c [ 47.946540][ T5000] el0_svc_common+0x13c/0x258 [ 47.947378][ T5000] do_el0_svc+0x5c/0x140 [ 47.948181][ T5000] el0_svc+0x78/0x1d0 [ 47.948866][ T5000] el0t_64_sync_handler+0xcc/0xe4 [ 47.949720][ T5000] el0t_64_sync+0x1a0/0x1a4 [ 48.113240][ T5021] loop0: detected capacity change from 0 to 32768 [ 48.115890][ T5021] BTRFS: device fsid a6a605fc-d5f1-4e66-8595-3726e2b761d6 devid 1 transid 8 /dev/loop0 scanned by syz-executor.0 (5021) [ 48.126799][ T5021] BTRFS info (device loop0): using blake2b (blake2b-256-generic) checksum algorithm [ 48.128398][ T5021] BTRFS info (device loop0): using free space tree [ 48.129512][ T5021] BTRFS info (device loop0): has skinny extents [ 48.139893][ T5021] BTRFS info (device loop0): enabling ssd optimizations [ 48.144037][ T5021] FAULT_INJECTION: forcing a failure. [ 48.144037][ T5021] name failslab, interval 1, probability 0, space 0, times 0 [ 48.147328][ T5021] CPU: 1 PID: 5021 Comm: syz-executor.0 Tainted: G W syzkaller #0 [ 48.148878][ T5021] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/02/2026 [ 48.150653][ T5021] Call trace: [ 48.151246][ T5021] dump_backtrace+0x0/0x458 [ 48.152041][ T5021] show_stack+0x2c/0x3c [ 48.152807][ T5021] __dump_stack+0x30/0x40 [ 48.153560][ T5021] dump_stack_lvl+0xf4/0x15c [ 48.154383][ T5021] dump_stack+0x1c/0x5c [ 48.155135][ T5021] should_fail+0x3c8/0x520 [ 48.155915][ T5021] __should_failslab+0xbc/0x10c [ 48.156786][ T5021] should_failslab+0x10/0x28 [ 48.157617][ T5021] slab_pre_alloc_hook+0x64/0xe8 [ 48.158651][ T5021] kmem_cache_alloc_trace+0x98/0x3f0 [ 48.159683][ T5021] btrfs_alloc_root+0x8c/0x9e0 [ 48.160618][ T5021] btrfs_create_tree+0x110/0x9b4 [ 48.161585][ T5021] btrfs_quota_enable+0x370/0x1904 [ 48.162494][ T5021] btrfs_ioctl_quota_ctl+0x13c/0x180 [ 48.163470][ T5021] btrfs_ioctl+0x96c/0xa8c [ 48.164256][ T5021] __arm64_sys_ioctl+0x14c/0x1c8 [ 48.165306][ T5021] invoke_syscall+0x98/0x28c [ 48.166296][ T5021] el0_svc_common+0x13c/0x258 [ 48.167299][ T5021] do_el0_svc+0x5c/0x140 [ 48.168073][ T5021] el0_svc+0x78/0x1d0 [ 48.168784][ T5021] el0t_64_sync_handler+0xcc/0xe4 [ 48.169655][ T5021] el0t_64_sync+0x1a0/0x1a4 [ 48.172588][ T5021] ------------[ cut here ]------------ [ 48.173626][ T5021] WARNING: CPU: 1 PID: 5021 at fs/btrfs/qgroup.c:1009 btrfs_quota_enable+0x1100/0x1904 [ 48.175320][ T5021] Modules linked in: [ 48.176039][ T5021] CPU: 1 PID: 5021 Comm: syz-executor.0 Tainted: G W syzkaller #0 [ 48.177708][ T5021] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/02/2026 [ 48.179491][ T5021] pstate: 62400005 (nZCv daif +PAN -UAO +TCO -DIT -SSBS BTYPE=--) [ 48.180877][ T5021] pc : btrfs_quota_enable+0x1100/0x1904 [ 48.181844][ T5021] lr : btrfs_quota_enable+0x1100/0x1904 [ 48.182873][ T5021] sp : ffff8000217c7ae0 [ 48.183655][ T5021] x29: ffff8000217c7c40 x28: 0000000000001798 x27: ffff0000dcff94d0 [ 48.185146][ T5021] x26: dfff800000000000 x25: fffffffffffffff4 x24: ffff0000d1152000 [ 48.186460][ T5021] x23: ffff0000c20e7100 x22: ffff7000042f8f6c x21: 1fffe0001b9ff2a5 [ 48.187832][ T5021] x20: ffff0000dcff9528 x19: ffff0000dc7d0000 x18: 0000000000000000 [ 48.189220][ T5021] x17: 0000000000000000 x16: ffff80001134e478 x15: 0000000000000000 [ 48.190587][ T5021] x14: 0000000000000001 x13: 1fffe000341d2dab x12: 0000000000000000 [ 48.192072][ T5021] x11: ff8080000830061c x10: 0000000000000000 x9 : 7a2bf4af1ff81e00 [ 48.193577][ T5021] x8 : 7a2bf4af1ff81e00 x7 : 0000000000000001 x6 : 0000000000000001 [ 48.195044][ T5021] x5 : ffff8000217c73f8 x4 : ffff80001446f500 x3 : ffff80000850f688 [ 48.196552][ T5021] x2 : 0000000000000001 x1 : 0000000100000000 x0 : 0000000000000026 [ 48.197985][ T5021] Call trace: [ 48.198580][ T5021] btrfs_quota_enable+0x1100/0x1904 [ 48.199599][ T5021] btrfs_ioctl_quota_ctl+0x13c/0x180 [ 48.200603][ T5021] btrfs_ioctl+0x96c/0xa8c [ 48.201428][ T5021] __arm64_sys_ioctl+0x14c/0x1c8 [ 48.202337][ T5021] invoke_syscall+0x98/0x28c [ 48.203170][ T5021] el0_svc_common+0x13c/0x258 [ 48.203956][ T5021] do_el0_svc+0x5c/0x140 [ 48.204723][ T5021] el0_svc+0x78/0x1d0 [ 48.205442][ T5021] el0t_64_sync_handler+0xcc/0xe4 [ 48.206302][ T5021] el0t_64_sync+0x1a0/0x1a4 [ 48.207079][ T5021] irq event stamp: 78946 [ 48.207799][ T5021] hardirqs last enabled at (78945): [] __up_console_sem+0xb4/0xfc [ 48.209492][ T5021] hardirqs last disabled at (78946): [] el1_dbg+0x24/0x80 [ 48.211109][ T5021] softirqs last enabled at (78926): [] handle_softirqs+0xa70/0xc14 [ 48.212720][ T5021] softirqs last disabled at (78881): [] __irq_exit_rcu+0x240/0x434 [ 48.214401][ T5021] ---[ end trace ddfcf5910ad65d04 ]--- [ 48.216523][ T5021] BTRFS: error (device loop0) in btrfs_quota_enable:1009: errno=-12 Out of memory [ 48.218052][ T5021] BTRFS info (device loop0): forced readonly [ 48.395949][ T5042] loop0: detected capacity change from 0 to 32768 [ 48.398867][ T5042] BTRFS: device fsid a6a605fc-d5f1-4e66-8595-3726e2b761d6 devid 1 transid 8 /dev/loop0 scanned by syz-executor.0 (5042) [ 48.403713][ T5042] BTRFS info (device loop0): using blake2b (blake2b-256-generic) checksum algorithm [ 48.405724][ T5042] BTRFS info (device loop0): using free space tree [ 48.407026][ T5042] BTRFS info (device loop0): has skinny extents [ 48.414713][ T5042] BTRFS info (device loop0): enabling ssd optimizations [ 48.419453][ T5042] FAULT_INJECTION: forcing a failure. [ 48.419453][ T5042] name failslab, interval 1, probability 0, space 0, times 0 [ 48.421587][ T5042] CPU: 1 PID: 5042 Comm: syz-executor.0 Tainted: G W syzkaller #0 [ 48.423112][ T5042] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/02/2026 [ 48.424836][ T5042] Call trace: [ 48.425325][ T5042] dump_backtrace+0x0/0x458 [ 48.425573][ T3622] Bluetooth: hci0: command 0x0419 tx timeout [ 48.426088][ T5042] show_stack+0x2c/0x3c [ 48.426100][ T5042] __dump_stack+0x30/0x40 [ 48.428727][ T5042] dump_stack_lvl+0xf4/0x15c [ 48.429711][ T5042] dump_stack+0x1c/0x5c [ 48.430499][ T5042] should_fail+0x3c8/0x520 [ 48.431359][ T5042] __should_failslab+0xbc/0x10c [ 48.432379][ T5042] should_failslab+0x10/0x28 [ 48.433337][ T5042] slab_pre_alloc_hook+0x64/0xe8 [ 48.434299][ T5042] kmem_cache_alloc_trace+0x98/0x3f0 [ 48.435326][ T5042] btrfs_alloc_root+0x8c/0x9e0 [ 48.436190][ T5042] btrfs_create_tree+0x110/0x9b4 [ 48.437061][ T5042] btrfs_quota_enable+0x370/0x1904 [ 48.437975][ T5042] btrfs_ioctl_quota_ctl+0x13c/0x180 [ 48.438960][ T5042] btrfs_ioctl+0x96c/0xa8c [ 48.439737][ T5042] __arm64_sys_ioctl+0x14c/0x1c8 [ 48.440718][ T5042] invoke_syscall+0x98/0x28c [ 48.441586][ T5042] el0_svc_common+0x13c/0x258 [ 48.442489][ T5042] do_el0_svc+0x5c/0x140 [ 48.443232][ T5042] el0_svc+0x78/0x1d0 [ 48.444074][ T5042] el0t_64_sync_handler+0xcc/0xe4 [ 48.445010][ T5042] el0t_64_sync+0x1a0/0x1a4 [ 48.446733][ T5042] ------------[ cut here ]------------ [ 48.447787][ T5042] WARNING: CPU: 1 PID: 5042 at fs/btrfs/qgroup.c:1009 btrfs_quota_enable+0x1100/0x1904 [ 48.449288][ T5042] Modules linked in: [ 48.449903][ T5042] CPU: 1 PID: 5042 Comm: syz-executor.0 Tainted: G W syzkaller #0 [ 48.451657][ T5042] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/02/2026 [ 48.453413][ T5042] pstate: 62400005 (nZCv daif +PAN -UAO +TCO -DIT -SSBS BTYPE=--) [ 48.454738][ T5042] pc : btrfs_quota_enable+0x1100/0x1904 [ 48.455817][ T5042] lr : btrfs_quota_enable+0x1100/0x1904 [ 48.456841][ T5042] sp : ffff8000219f7ae0 [ 48.457584][ T5042] x29: ffff8000219f7c40 x28: 0000000000001798 x27: ffff0000dcff9630 [ 48.459103][ T5042] x26: dfff800000000000 x25: fffffffffffffff4 x24: ffff0000da03a000 [ 48.460573][ T5042] x23: ffff0000c22cdf00 x22: ffff70000433ef6c x21: 1fffe0001b9ff2d1 [ 48.462119][ T5042] x20: ffff0000dcff9688 x19: ffff0000dc7d0000 x18: 0000000000000000 [ 48.463843][ T5042] x17: 0000000000000000 x16: ffff80001134e478 x15: 0000000000000000 [ 48.465507][ T5042] x14: 0000000000000001 x13: 1fffe000341d2dab x12: 0000000000000000 [ 48.467249][ T5042] x11: ff8080000830061c x10: 0000000000000000 x9 : 44c4e89c21c34a00 [ 48.468983][ T5042] x8 : 44c4e89c21c34a00 x7 : 0000000000000001 x6 : 0000000000000001 [ 48.470500][ T5042] x5 : ffff8000219f73f8 x4 : ffff80001446f500 x3 : ffff80000850f688 [ 48.471987][ T5042] x2 : 0000000000000001 x1 : 0000000100000000 x0 : 0000000000000026 [ 48.473548][ T5042] Call trace: [ 48.474115][ T5042] btrfs_quota_enable+0x1100/0x1904 [ 48.474968][ T5042] btrfs_ioctl_quota_ctl+0x13c/0x180 [ 48.475849][ T5042] btrfs_ioctl+0x96c/0xa8c [ 48.476596][ T5042] __arm64_sys_ioctl+0x14c/0x1c8 [ 48.477621][ T5042] invoke_syscall+0x98/0x28c [ 48.478453][ T5042] el0_svc_common+0x13c/0x258 [ 48.479272][ T5042] do_el0_svc+0x5c/0x140 [ 48.480025][ T5042] el0_svc+0x78/0x1d0 [ 48.480739][ T5042] el0t_64_sync_handler+0xcc/0xe4 [ 48.481618][ T5042] el0t_64_sync+0x1a0/0x1a4 [ 48.482447][ T5042] irq event stamp: 79060 [ 48.483235][ T5042] hardirqs last enabled at (79059): [] __up_console_sem+0xb4/0xfc [ 48.485005][ T5042] hardirqs last disabled at (79060): [] el1_dbg+0x24/0x80 [ 48.486621][ T5042] softirqs last enabled at (79040): [] handle_softirqs+0xa70/0xc14 [ 48.488412][ T5042] softirqs last disabled at (79025): [] __irq_exit_rcu+0x240/0x434 [ 48.490194][ T5042] ---[ end trace ddfcf5910ad65d05 ]--- [ 48.492744][ T5042] BTRFS: error (device loop0) in btrfs_quota_enable:1009: errno=-12 Out of memory [ 48.494276][ T5042] BTRFS info (device loop0): forced readonly [ 48.661738][ T5063] loop0: detected capacity change from 0 to 32768 [ 48.664090][ T5063] BTRFS: device fsid a6a605fc-d5f1-4e66-8595-3726e2b761d6 devid 1 transid 8 /dev/loop0 scanned by syz-executor.0 (5063) [ 48.673732][ T5063] BTRFS info (device loop0): using blake2b (blake2b-256-generic) checksum algorithm [ 48.675376][ T5063] BTRFS info (device loop0): using free space tree [ 48.677058][ T5063] BTRFS info (device loop0): has skinny extents [ 48.701988][ T5063] BTRFS info (device loop0): enabling ssd optimizations [ 48.705460][ T5063] FAULT_INJECTION: forcing a failure. [ 48.705460][ T5063] name failslab, interval 1, probability 0, space 0, times 0 [ 48.708164][ T5063] CPU: 1 PID: 5063 Comm: syz-executor.0 Tainted: G W syzkaller #0 [ 48.709805][ T5063] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/02/2026 [ 48.711740][ T5063] Call trace: [ 48.712354][ T5063] dump_backtrace+0x0/0x458 [ 48.713225][ T5063] show_stack+0x2c/0x3c [ 48.714012][ T5063] __dump_stack+0x30/0x40 [ 48.714782][ T5063] dump_stack_lvl+0xf4/0x15c [ 48.715543][ T5063] dump_stack+0x1c/0x5c [ 48.716435][ T5063] should_fail+0x3c8/0x520 [ 48.717379][ T5063] __should_failslab+0xbc/0x10c [ 48.718267][ T5063] should_failslab+0x10/0x28 [ 48.719176][ T5063] slab_pre_alloc_hook+0x64/0xe8 [ 48.720092][ T5063] kmem_cache_alloc_trace+0x98/0x3f0 [ 48.721012][ T5063] btrfs_alloc_root+0x8c/0x9e0 [ 48.721868][ T5063] btrfs_create_tree+0x110/0x9b4 [ 48.722751][ T5063] btrfs_quota_enable+0x370/0x1904 [ 48.723647][ T5063] btrfs_ioctl_quota_ctl+0x13c/0x180 [ 48.724570][ T5063] btrfs_ioctl+0x96c/0xa8c [ 48.725346][ T5063] __arm64_sys_ioctl+0x14c/0x1c8 [ 48.726195][ T5063] invoke_syscall+0x98/0x28c [ 48.727014][ T5063] el0_svc_common+0x13c/0x258 [ 48.727831][ T5063] do_el0_svc+0x5c/0x140 [ 48.728586][ T5063] el0_svc+0x78/0x1d0 [ 48.729284][ T5063] el0t_64_sync_handler+0xcc/0xe4 [ 48.730135][ T5063] el0t_64_sync+0x1a0/0x1a4 [ 48.731538][ T5063] ------------[ cut here ]------------ [ 48.732535][ T5063] WARNING: CPU: 1 PID: 5063 at fs/btrfs/qgroup.c:1009 btrfs_quota_enable+0x1100/0x1904 [ 48.734303][ T5063] Modules linked in: [ 48.735012][ T5063] CPU: 1 PID: 5063 Comm: syz-executor.0 Tainted: G W syzkaller #0 [ 48.736756][ T5063] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/02/2026 [ 48.738699][ T5063] pstate: 62400005 (nZCv daif +PAN -UAO +TCO -DIT -SSBS BTYPE=--) [ 48.739993][ T5063] pc : btrfs_quota_enable+0x1100/0x1904 [ 48.740899][ T5063] lr : btrfs_quota_enable+0x1100/0x1904 [ 48.741852][ T5063] sp : ffff800021447ae0 [ 48.742563][ T5063] x29: ffff800021447c40 x28: 0000000000001798 x27: ffff0000dcff9790 [ 48.743994][ T5063] x26: dfff800000000000 x25: fffffffffffffff4 x24: ffff0000d7614000 [ 48.745366][ T5063] x23: ffff0000d1538200 x22: ffff700004288f6c x21: 1fffe0001b9ff2fd [ 48.746813][ T5063] x20: ffff0000dcff97e8 x19: ffff0000ca9b4000 x18: 0000000000000000 [ 48.748296][ T5063] x17: 0000000000000000 x16: ffff80001134e478 x15: 0000000000000000 [ 48.749779][ T5063] x14: 0000000000000001 x13: 1fffe000341d2dab x12: 0000000000000000 [ 48.751237][ T5063] x11: ff8080000830061c x10: 0000000000000000 x9 : 55de923899a29f00 [ 48.752760][ T5063] x8 : 55de923899a29f00 x7 : 0000000000000001 x6 : 0000000000000001 [ 48.754270][ T5063] x5 : ffff8000214473f8 x4 : ffff80001446f500 x3 : ffff80000850f688 [ 48.755616][ T5063] x2 : 0000000000000001 x1 : 0000000100000000 x0 : 0000000000000026 [ 48.756933][ T5063] Call trace: [ 48.757477][ T5063] btrfs_quota_enable+0x1100/0x1904 [ 48.758393][ T5063] btrfs_ioctl_quota_ctl+0x13c/0x180 [ 48.759300][ T5063] btrfs_ioctl+0x96c/0xa8c [ 48.760059][ T5063] __arm64_sys_ioctl+0x14c/0x1c8 [ 48.760930][ T5063] invoke_syscall+0x98/0x28c [ 48.761762][ T5063] el0_svc_common+0x13c/0x258 [ 48.762635][ T5063] do_el0_svc+0x5c/0x140 [ 48.763360][ T5063] el0_svc+0x78/0x1d0 [ 48.764079][ T5063] el0t_64_sync_handler+0xcc/0xe4 [ 48.764949][ T5063] el0t_64_sync+0x1a0/0x1a4 [ 48.765695][ T5063] irq event stamp: 78902 [ 48.766433][ T5063] hardirqs last enabled at (78901): [] __up_console_sem+0xb4/0xfc [ 48.768150][ T5063] hardirqs last disabled at (78902): [] el1_dbg+0x24/0x80 [ 48.769773][ T5063] softirqs last enabled at (78882): [] handle_softirqs+0xa70/0xc14 [ 48.771522][ T5063] softirqs last disabled at (78869): [] __irq_exit_rcu+0x240/0x434 [ 48.773188][ T5063] ---[ end trace ddfcf5910ad65d06 ]--- [ 48.775003][ T5063] BTRFS: error (device loop0) in btrfs_quota_enable:1009: errno=-12 Out of memory [ 48.776987][ T5063] BTRFS info (device loop0): forced readonly [ 48.961280][ T5084] loop0: detected capacity change from 0 to 32768 [ 48.964052][ T5084] BTRFS: device fsid a6a605fc-d5f1-4e66-8595-3726e2b761d6 devid 1 transid 8 /dev/loop0 scanned by syz-executor.0 (5084) [ 48.968512][ T5084] BTRFS info (device loop0): using blake2b (blake2b-256-generic) checksum algorithm [ 48.970319][ T5084] BTRFS info (device loop0): using free space tree [ 48.971502][ T5084] BTRFS info (device loop0): has skinny extents [ 48.979521][ T5084] BTRFS info (device loop0): enabling ssd optimizations [ 48.983357][ T5084] FAULT_INJECTION: forcing a failure. [ 48.983357][ T5084] name failslab, interval 1, probability 0, space 0, times 0 [ 48.986783][ T5084] CPU: 1 PID: 5084 Comm: syz-executor.0 Tainted: G W syzkaller #0 [ 48.988451][ T5084] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/02/2026 [ 48.990227][ T5084] Call trace: [ 48.990808][ T5084] dump_backtrace+0x0/0x458 [ 48.991623][ T5084] show_stack+0x2c/0x3c [ 48.992386][ T5084] __dump_stack+0x30/0x40 [ 48.993185][ T5084] dump_stack_lvl+0xf4/0x15c [ 48.994030][ T5084] dump_stack+0x1c/0x5c [ 48.994777][ T5084] should_fail+0x3c8/0x520 [ 48.995573][ T5084] __should_failslab+0xbc/0x10c [ 48.996434][ T5084] should_failslab+0x10/0x28 [ 48.997201][ T5084] slab_pre_alloc_hook+0x64/0xe8 [ 48.998118][ T5084] kmem_cache_alloc_trace+0x98/0x3f0 [ 48.999106][ T5084] btrfs_alloc_root+0x8c/0x9e0 [ 48.999989][ T5084] btrfs_create_tree+0x110/0x9b4 [ 49.000912][ T5084] btrfs_quota_enable+0x370/0x1904 [ 49.001859][ T5084] btrfs_ioctl_quota_ctl+0x13c/0x180 [ 49.002845][ T5084] btrfs_ioctl+0x96c/0xa8c [ 49.003659][ T5084] __arm64_sys_ioctl+0x14c/0x1c8 [ 49.004582][ T5084] invoke_syscall+0x98/0x28c [ 49.005525][ T5084] el0_svc_common+0x13c/0x258 [ 49.006397][ T5084] do_el0_svc+0x5c/0x140 [ 49.007210][ T5084] el0_svc+0x78/0x1d0 [ 49.007969][ T5084] el0t_64_sync_handler+0xcc/0xe4 [ 49.008986][ T5084] el0t_64_sync+0x1a0/0x1a4 [ 49.012159][ T5084] ------------[ cut here ]------------ [ 49.013177][ T5084] WARNING: CPU: 1 PID: 5084 at fs/btrfs/qgroup.c:1009 btrfs_quota_enable+0x1100/0x1904 [ 49.015068][ T5084] Modules linked in: [ 49.015830][ T5084] CPU: 1 PID: 5084 Comm: syz-executor.0 Tainted: G W syzkaller #0 [ 49.017641][ T5084] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/02/2026 [ 49.019758][ T5084] pstate: 62400005 (nZCv daif +PAN -UAO +TCO -DIT -SSBS BTYPE=--) [ 49.021430][ T5084] pc : btrfs_quota_enable+0x1100/0x1904 [ 49.022543][ T5084] lr : btrfs_quota_enable+0x1100/0x1904 [ 49.023639][ T5084] sp : ffff800021ca7ae0 [ 49.024326][ T5084] x29: ffff800021ca7c40 x28: 0000000000001798 x27: ffff0000dcff98f0 [ 49.025704][ T5084] x26: dfff800000000000 x25: fffffffffffffff4 x24: ffff0000d5ff8000 [ 49.027382][ T5084] x23: ffff0000d2501400 x22: ffff700004394f6c x21: 1fffe0001b9ff329 [ 49.029102][ T5084] x20: ffff0000dcff9948 x19: ffff0000cc990000 x18: 0000000000000000 [ 49.030767][ T5084] x17: 0000000000000000 x16: ffff80001134e478 x15: 0000000000000000 [ 49.032233][ T5084] x14: 0000000000000001 x13: 1fffe000341d2dab x12: 0000000000000000 [ 49.033663][ T5084] x11: ff8080000830061c x10: 0000000000000000 x9 : e3fbe3a7ea0f0a00 [ 49.035337][ T5084] x8 : e3fbe3a7ea0f0a00 x7 : 0000000000000001 x6 : 0000000000000001 [ 49.037073][ T5084] x5 : ffff800021ca73f8 x4 : ffff80001446f500 x3 : ffff80000850f688 [ 49.038749][ T5084] x2 : 0000000000000001 x1 : 0000000100000000 x0 : 0000000000000026 [ 49.040409][ T5084] Call trace: [ 49.041007][ T5084] btrfs_quota_enable+0x1100/0x1904 [ 49.041923][ T5084] btrfs_ioctl_quota_ctl+0x13c/0x180 [ 49.042868][ T5084] btrfs_ioctl+0x96c/0xa8c [ 49.043799][ T5084] __arm64_sys_ioctl+0x14c/0x1c8 [ 49.044855][ T5084] invoke_syscall+0x98/0x28c [ 49.045717][ T5084] el0_svc_common+0x13c/0x258 [ 49.046699][ T5084] do_el0_svc+0x5c/0x140 [ 49.047579][ T5084] el0_svc+0x78/0x1d0 [ 49.048377][ T5084] el0t_64_sync_handler+0xcc/0xe4 [ 49.049375][ T5084] el0t_64_sync+0x1a0/0x1a4 [ 49.050203][ T5084] irq event stamp: 78634 [ 49.050944][ T5084] hardirqs last enabled at (78633): [] __up_console_sem+0xb4/0xfc [ 49.052721][ T5084] hardirqs last disabled at (78634): [] el1_dbg+0x24/0x80 [ 49.054266][ T5084] softirqs last enabled at (78614): [] handle_softirqs+0xa70/0xc14 [ 49.055923][ T5084] softirqs last disabled at (78595): [] __irq_exit_rcu+0x240/0x434 [ 49.057631][ T5084] ---[ end trace ddfcf5910ad65d07 ]--- [ 49.059493][ T5084] BTRFS: error (device loop0) in btrfs_quota_enable:1009: errno=-12 Out of memory [ 49.061185][ T5084] BTRFS info (device loop0): forced readonly [ 49.224582][ T5105] BTRFS: device fsid a6a605fc-d5f1-4e66-8595-3726e2b761d6 devid 1 transid 8 /dev/loop0 scanned by syz-executor.0 (5105) [ 49.228486][ T5105] BTRFS info (device loop0): using blake2b (blake2b-256-generic) checksum algorithm [ 49.230236][ T5105] BTRFS info (device loop0): using free space tree [ 49.231416][ T5105] BTRFS info (device loop0): has skinny extents [ 49.247336][ T5105] BTRFS info (device loop0): enabling ssd optimizations [ 49.250517][ T5105] FAULT_INJECTION: forcing a failure. [ 49.250517][ T5105] name failslab, interval 1, probability 0, space 0, times 0 [ 49.252783][ T5105] CPU: 1 PID: 5105 Comm: syz-executor.0 Tainted: G W syzkaller #0 [ 49.254364][ T5105] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/02/2026 [ 49.256065][ T5105] Call trace: [ 49.256622][ T5105] dump_backtrace+0x0/0x458 [ 49.257414][ T5105] show_stack+0x2c/0x3c [ 49.258123][ T5105] __dump_stack+0x30/0x40 [ 49.258853][ T5105] dump_stack_lvl+0xf4/0x15c [ 49.259659][ T5105] dump_stack+0x1c/0x5c [ 49.260396][ T5105] should_fail+0x3c8/0x520 [ 49.261167][ T5105] __should_failslab+0xbc/0x10c [ 49.261959][ T5105] should_failslab+0x10/0x28 [ 49.262737][ T5105] slab_pre_alloc_hook+0x64/0xe8 [ 49.263568][ T5105] kmem_cache_alloc_trace+0x98/0x3f0 [ 49.264474][ T5105] btrfs_alloc_root+0x8c/0x9e0 [ 49.265271][ T5105] btrfs_create_tree+0x110/0x9b4 [ 49.266096][ T5105] btrfs_quota_enable+0x370/0x1904 [ 49.266981][ T5105] btrfs_ioctl_quota_ctl+0x13c/0x180 [ 49.267878][ T5105] btrfs_ioctl+0x96c/0xa8c [ 49.268622][ T5105] __arm64_sys_ioctl+0x14c/0x1c8 [ 49.269462][ T5105] invoke_syscall+0x98/0x28c [ 49.270236][ T5105] el0_svc_common+0x13c/0x258 [ 49.270999][ T5105] do_el0_svc+0x5c/0x140 [ 49.271715][ T5105] el0_svc+0x78/0x1d0 [ 49.272376][ T5105] el0t_64_sync_handler+0xcc/0xe4 [ 49.273233][ T5105] el0t_64_sync+0x1a0/0x1a4 [ 49.274202][ T5105] ------------[ cut here ]------------ [ 49.275207][ T5105] WARNING: CPU: 1 PID: 5105 at fs/btrfs/qgroup.c:1009 btrfs_quota_enable+0x1100/0x1904 [ 49.276743][ T5105] Modules linked in: [ 49.277391][ T5105] CPU: 1 PID: 5105 Comm: syz-executor.0 Tainted: G W syzkaller #0 [ 49.278883][ T5105] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/02/2026 [ 49.280557][ T5105] pstate: 62400005 (nZCv daif +PAN -UAO +TCO -DIT -SSBS BTYPE=--) [ 49.281935][ T5105] pc : btrfs_quota_enable+0x1100/0x1904 [ 49.282952][ T5105] lr : btrfs_quota_enable+0x1100/0x1904 [ 49.283966][ T5105] sp : ffff800021d37ae0 [ 49.284699][ T5105] x29: ffff800021d37c40 x28: 0000000000001798 x27: ffff0000dcff9a50 [ 49.286171][ T5105] x26: dfff800000000000 x25: fffffffffffffff4 x24: ffff0000d684a000 [ 49.287616][ T5105] x23: ffff0000d6a9c000 x22: ffff7000043a6f6c x21: 1fffe0001b9ff355 [ 49.289091][ T5105] x20: ffff0000dcff9aa8 x19: ffff0000c977c000 x18: 0000000000000000 [ 49.290585][ T5105] x17: 0000000000000000 x16: ffff8000082c63e0 x15: 0000000000000000 [ 49.292053][ T5105] x14: 0000000000000001 x13: 1ffff000043a6e7c x12: 0000000000000000 [ 49.293437][ T5105] x11: ff8080000830061c x10: 0000000000000000 x9 : c0eca0bb4091ed00 [ 49.294846][ T5105] x8 : c0eca0bb4091ed00 x7 : 0000000000000001 x6 : 0000000000000001 [ 49.296269][ T5105] x5 : ffff800021d373f8 x4 : ffff80001446f500 x3 : ffff800008307f44 [ 49.297679][ T5105] x2 : 0000000000000001 x1 : 0000000100000000 x0 : 0000000000000026 [ 49.299102][ T5105] Call trace: [ 49.299668][ T5105] btrfs_quota_enable+0x1100/0x1904 [ 49.300649][ T5105] btrfs_ioctl_quota_ctl+0x13c/0x180 [ 49.301625][ T5105] btrfs_ioctl+0x96c/0xa8c [ 49.302440][ T5105] __arm64_sys_ioctl+0x14c/0x1c8 [ 49.303350][ T5105] invoke_syscall+0x98/0x28c [ 49.304171][ T5105] el0_svc_common+0x13c/0x258 [ 49.304960][ T5105] do_el0_svc+0x5c/0x140 [ 49.305721][ T5105] el0_svc+0x78/0x1d0 [ 49.306399][ T5105] el0t_64_sync_handler+0xcc/0xe4 [ 49.307346][ T5105] el0t_64_sync+0x1a0/0x1a4 [ 49.308133][ T5105] irq event stamp: 78476 [ 49.308846][ T5105] hardirqs last enabled at (78475): [] __up_console_sem+0xb4/0xfc [ 49.310485][ T5105] hardirqs last disabled at (78476): [] el1_dbg+0x24/0x80 [ 49.311994][ T5105] softirqs last enabled at (78456): [] handle_softirqs+0xa70/0xc14 [ 49.313653][ T5105] softirqs last disabled at (78423): [] __irq_exit_rcu+0x240/0x434 [ 49.315320][ T5105] ---[ end trace ddfcf5910ad65d08 ]--- [ 49.316531][ T5105] BTRFS: error (device loop0) in btrfs_quota_enable:1009: errno=-12 Out of memory [ 49.318149][ T5105] BTRFS info (device loop0): forced readonly [ 49.494998][ T5126] BTRFS: device fsid a6a605fc-d5f1-4e66-8595-3726e2b761d6 devid 1 transid 8 /dev/loop0 scanned by syz-executor.0 (5126) [ 49.501121][ T5126] BTRFS info (device loop0): using blake2b (blake2b-256-generic) checksum algorithm [ 49.503414][ T5126] BTRFS info (device loop0): using free space tree [ 49.504539][ T5126] BTRFS info (device loop0): has skinny extents [ 49.511905][ T5126] BTRFS info (device loop0): enabling ssd optimizations [ 49.515283][ T5126] FAULT_INJECTION: forcing a failure. [ 49.515283][ T5126] name failslab, interval 1, probability 0, space 0, times 0 [ 49.517825][ T5126] CPU: 0 PID: 5126 Comm: syz-executor.0 Tainted: G W syzkaller #0 [ 49.519391][ T5126] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/02/2026 [ 49.521096][ T5126] Call trace: [ 49.521637][ T5126] dump_backtrace+0x0/0x458 [ 49.522286][ T5126] show_stack+0x2c/0x3c [ 49.522953][ T5126] __dump_stack+0x30/0x40 [ 49.523650][ T5126] dump_stack_lvl+0xf4/0x15c [ 49.524384][ T5126] dump_stack+0x1c/0x5c [ 49.525053][ T5126] should_fail+0x3c8/0x520 [ 49.525795][ T5126] __should_failslab+0xbc/0x10c [ 49.526635][ T5126] should_failslab+0x10/0x28 [ 49.527402][ T5126] slab_pre_alloc_hook+0x64/0xe8 [ 49.528269][ T5126] kmem_cache_alloc_trace+0x98/0x3f0 [ 49.529167][ T5126] btrfs_alloc_root+0x8c/0x9e0 [ 49.529989][ T5126] btrfs_create_tree+0x110/0x9b4 [ 49.530820][ T5126] btrfs_quota_enable+0x370/0x1904 [ 49.531696][ T5126] btrfs_ioctl_quota_ctl+0x13c/0x180 [ 49.532618][ T5126] btrfs_ioctl+0x96c/0xa8c [ 49.533389][ T5126] __arm64_sys_ioctl+0x14c/0x1c8 [ 49.534265][ T5126] invoke_syscall+0x98/0x28c [ 49.535103][ T5126] el0_svc_common+0x13c/0x258 [ 49.535929][ T5126] do_el0_svc+0x5c/0x140 [ 49.536688][ T5126] el0_svc+0x78/0x1d0 [ 49.537376][ T5126] el0t_64_sync_handler+0xcc/0xe4 [ 49.538256][ T5126] el0t_64_sync+0x1a0/0x1a4 [ 49.539248][ T5126] ------------[ cut here ]------------ [ 49.540722][ T5126] WARNING: CPU: 0 PID: 5126 at fs/btrfs/qgroup.c:1009 btrfs_quota_enable+0x1100/0x1904 [ 49.542424][ T5126] Modules linked in: [ 49.543131][ T5126] CPU: 0 PID: 5126 Comm: syz-executor.0 Tainted: G W syzkaller #0 [ 49.544773][ T5126] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/02/2026 [ 49.546604][ T5126] pstate: 62400005 (nZCv daif +PAN -UAO +TCO -DIT -SSBS BTYPE=--) [ 49.548169][ T5126] pc : btrfs_quota_enable+0x1100/0x1904 [ 49.549265][ T5126] lr : btrfs_quota_enable+0x1100/0x1904 [ 49.550333][ T5126] sp : ffff800021d37ae0 [ 49.551207][ T5126] x29: ffff800021d37c40 x28: 0000000000001798 x27: ffff0000de5906e0 [ 49.552640][ T5126] x26: dfff800000000000 x25: fffffffffffffff4 x24: ffff0000e56a6000 [ 49.554311][ T5126] x23: ffff0000cc814d00 x22: ffff7000043a6f6c x21: 1fffe0001bcb20e7 [ 49.556073][ T5126] x20: ffff0000de590738 x19: ffff0000d4f78000 x18: 0000000000000000 [ 49.557490][ T5126] x17: 0000000000000000 x16: ffff80001134e478 x15: 0000000000000000 [ 49.559006][ T5126] x14: 0000000000000001 x13: 1fffe000341cebab x12: 0000000000000000 [ 49.560479][ T5126] x11: ff8080000830061c x10: 0000000000000000 x9 : 792b9646c1994400 [ 49.562025][ T5126] x8 : 792b9646c1994400 x7 : 0000000000000001 x6 : 0000000000000001 [ 49.563422][ T5126] x5 : ffff800021d373f8 x4 : ffff80001446f500 x3 : ffff80000850f688 [ 49.564812][ T5126] x2 : 0000000000000001 x1 : 0000000100000000 x0 : 0000000000000026 [ 49.566193][ T5126] Call trace: [ 49.566769][ T5126] btrfs_quota_enable+0x1100/0x1904 [ 49.567664][ T5126] btrfs_ioctl_quota_ctl+0x13c/0x180 [ 49.568587][ T5126] btrfs_ioctl+0x96c/0xa8c [ 49.569433][ T5126] __arm64_sys_ioctl+0x14c/0x1c8 [ 49.570286][ T5126] invoke_syscall+0x98/0x28c [ 49.571135][ T5126] el0_svc_common+0x13c/0x258 [ 49.571936][ T5126] do_el0_svc+0x5c/0x140 [ 49.572642][ T5126] el0_svc+0x78/0x1d0 [ 49.573333][ T5126] el0t_64_sync_handler+0xcc/0xe4 [ 49.574155][ T5126] el0t_64_sync+0x1a0/0x1a4 [ 49.574977][ T5126] irq event stamp: 78820 [ 49.575739][ T5126] hardirqs last enabled at (78819): [] __up_console_sem+0xb4/0xfc [ 49.577464][ T5126] hardirqs last disabled at (78820): [] el1_dbg+0x24/0x80 [ 49.578997][ T5126] softirqs last enabled at (78796): [] handle_softirqs+0xa70/0xc14 [ 49.580580][ T5126] softirqs last disabled at (78761): [] __irq_exit_rcu+0x240/0x434 [ 49.582305][ T5126] ---[ end trace ddfcf5910ad65d09 ]--- [ 49.584147][ T5126] BTRFS: error (device loop0) in btrfs_quota_enable:1009: errno=-12 Out of memory [ 49.585785][ T5126] BTRFS info (device loop0): forced readonly [ 49.772586][ T5147] BTRFS: device fsid a6a605fc-d5f1-4e66-8595-3726e2b761d6 devid 1 transid 8 /dev/loop0 scanned by syz-executor.0 (5147) [ 49.776813][ T5147] BTRFS info (device loop0): using blake2b (blake2b-256-generic) checksum algorithm [ 49.778898][ T5147] BTRFS info (device loop0): using free space tree [ 49.780173][ T5147] BTRFS info (device loop0): has skinny extents [ 49.797153][ T5147] BTRFS info (device loop0): enabling ssd optimizations [ 49.800874][ T5147] FAULT_INJECTION: forcing a failure. [ 49.800874][ T5147] name failslab, interval 1, probability 0, space 0, times 0 [ 49.803201][ T5147] CPU: 1 PID: 5147 Comm: syz-executor.0 Tainted: G W syzkaller #0 [ 49.804668][ T5147] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/02/2026 [ 49.806404][ T5147] Call trace: [ 49.806977][ T5147] dump_backtrace+0x0/0x458 [ 49.807782][ T5147] show_stack+0x2c/0x3c [ 49.808529][ T5147] __dump_stack+0x30/0x40 [ 49.809292][ T5147] dump_stack_lvl+0xf4/0x15c [ 49.810091][ T5147] dump_stack+0x1c/0x5c [ 49.810790][ T5147] should_fail+0x3c8/0x520 [ 49.811542][ T5147] __should_failslab+0xbc/0x10c [ 49.812445][ T5147] should_failslab+0x10/0x28 [ 49.813301][ T5147] slab_pre_alloc_hook+0x64/0xe8 [ 49.814154][ T5147] kmem_cache_alloc_trace+0x98/0x3f0 [ 49.815076][ T5147] btrfs_alloc_root+0x8c/0x9e0 [ 49.815928][ T5147] btrfs_create_tree+0x110/0x9b4 [ 49.816815][ T5147] btrfs_quota_enable+0x370/0x1904 [ 49.817679][ T5147] btrfs_ioctl_quota_ctl+0x13c/0x180 [ 49.818582][ T5147] btrfs_ioctl+0x96c/0xa8c [ 49.819342][ T5147] __arm64_sys_ioctl+0x14c/0x1c8 [ 49.820202][ T5147] invoke_syscall+0x98/0x28c [ 49.821013][ T5147] el0_svc_common+0x13c/0x258 [ 49.821826][ T5147] do_el0_svc+0x5c/0x140 [ 49.822579][ T5147] el0_svc+0x78/0x1d0 [ 49.823249][ T5147] el0t_64_sync_handler+0xcc/0xe4 [ 49.824081][ T5147] el0t_64_sync+0x1a0/0x1a4 [ 49.826580][ T5147] ------------[ cut here ]------------ [ 49.827592][ T5147] WARNING: CPU: 1 PID: 5147 at fs/btrfs/qgroup.c:1009 btrfs_quota_enable+0x1100/0x1904 [ 49.829215][ T5147] Modules linked in: [ 49.829885][ T5147] CPU: 1 PID: 5147 Comm: syz-executor.0 Tainted: G W syzkaller #0 [ 49.831517][ T5147] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/02/2026 [ 49.833310][ T5147] pstate: 62400005 (nZCv daif +PAN -UAO +TCO -DIT -SSBS BTYPE=--) [ 49.834620][ T5147] pc : btrfs_quota_enable+0x1100/0x1904 [ 49.835575][ T5147] lr : btrfs_quota_enable+0x1100/0x1904 [ 49.836569][ T5147] sp : ffff8000222f7ae0 [ 49.837369][ T5147] x29: ffff8000222f7c40 x28: 0000000000001798 x27: ffff0000dcff9bb0 [ 49.838830][ T5147] x26: dfff800000000000 x25: fffffffffffffff4 x24: ffff0000cd17c000 [ 49.840291][ T5147] x23: ffff0000dbed5f00 x22: ffff70000445ef6c x21: 1fffe0001b9ff381 [ 49.841606][ T5147] x20: ffff0000dcff9c08 x19: ffff0000dd9f0000 x18: 0000000000000000 [ 49.843021][ T5147] x17: 0000000000000000 x16: ffff80001134e478 x15: 0000000000000000 [ 49.844470][ T5147] x14: 0000000000000001 x13: 1fffe000341d2dab x12: 0000000000000000 [ 49.845946][ T5147] x11: ff8080000830061c x10: 0000000000000000 x9 : dead86f482c55200 [ 49.847444][ T5147] x8 : dead86f482c55200 x7 : 0000000000000001 x6 : 0000000000000001 [ 49.848882][ T5147] x5 : ffff8000222f73f8 x4 : ffff80001446f500 x3 : ffff80000850f688 [ 49.850314][ T5147] x2 : 0000000000000001 x1 : 0000000100000000 x0 : 0000000000000026 [ 49.851800][ T5147] Call trace: [ 49.852426][ T5147] btrfs_quota_enable+0x1100/0x1904 [ 49.853388][ T5147] btrfs_ioctl_quota_ctl+0x13c/0x180 [ 49.854375][ T5147] btrfs_ioctl+0x96c/0xa8c [ 49.855112][ T5147] __arm64_sys_ioctl+0x14c/0x1c8 [ 49.855966][ T5147] invoke_syscall+0x98/0x28c [ 49.856943][ T5147] el0_svc_common+0x13c/0x258 [ 49.857919][ T5147] do_el0_svc+0x5c/0x140 [ 49.858724][ T5147] el0_svc+0x78/0x1d0 [ 49.859485][ T5147] el0t_64_sync_handler+0xcc/0xe4 [ 49.860364][ T5147] el0t_64_sync+0x1a0/0x1a4 [ 49.861165][ T5147] irq event stamp: 78730 [ 49.861893][ T5147] hardirqs last enabled at (78729): [] __up_console_sem+0xb4/0xfc [ 49.863553][ T5147] hardirqs last disabled at (78730): [] el1_dbg+0x24/0x80 [ 49.865057][ T5147] softirqs last enabled at (78710): [] handle_softirqs+0xa70/0xc14 [ 49.866729][ T5147] softirqs last disabled at (78673): [] __irq_exit_rcu+0x240/0x434 [ 49.868328][ T5147] ---[ end trace ddfcf5910ad65d0a ]--- [ 49.869695][ T5147] BTRFS: error (device loop0) in btrfs_quota_enable:1009: errno=-12 Out of memory [ 49.871802][ T5147] BTRFS info (device loop0): forced readonly [ 50.053353][ T5168] BTRFS: device fsid a6a605fc-d5f1-4e66-8595-3726e2b761d6 devid 1 transid 8 /dev/loop0 scanned by syz-executor.0 (5168) [ 50.056889][ T5168] BTRFS info (device loop0): using blake2b (blake2b-256-generic) checksum algorithm [ 50.058795][ T5168] BTRFS info (device loop0): using free space tree [ 50.059983][ T5168] BTRFS info (device loop0): has skinny extents [ 50.068659][ T5168] BTRFS info (device loop0): enabling ssd optimizations [ 50.072303][ T5168] FAULT_INJECTION: forcing a failure. [ 50.072303][ T5168] name failslab, interval 1, probability 0, space 0, times 0 [ 50.074956][ T5168] CPU: 0 PID: 5168 Comm: syz-executor.0 Tainted: G W syzkaller #0 [ 50.076725][ T5168] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/02/2026 [ 50.078600][ T5168] Call trace: [ 50.079152][ T5168] dump_backtrace+0x0/0x458 [ 50.079945][ T5168] show_stack+0x2c/0x3c [ 50.080649][ T5168] __dump_stack+0x30/0x40 [ 50.081403][ T5168] dump_stack_lvl+0xf4/0x15c [ 50.082230][ T5168] dump_stack+0x1c/0x5c [ 50.083019][ T5168] should_fail+0x3c8/0x520 [ 50.083853][ T5168] __should_failslab+0xbc/0x10c [ 50.084756][ T5168] should_failslab+0x10/0x28 [ 50.085614][ T5168] slab_pre_alloc_hook+0x64/0xe8 [ 50.086555][ T5168] kmem_cache_alloc_trace+0x98/0x3f0 [ 50.087701][ T5168] btrfs_alloc_root+0x8c/0x9e0 [ 50.088742][ T5168] btrfs_create_tree+0x110/0x9b4 [ 50.089809][ T5168] btrfs_quota_enable+0x370/0x1904 [ 50.090914][ T5168] btrfs_ioctl_quota_ctl+0x13c/0x180 [ 50.091955][ T5168] btrfs_ioctl+0x96c/0xa8c [ 50.092802][ T5168] __arm64_sys_ioctl+0x14c/0x1c8 [ 50.093729][ T5168] invoke_syscall+0x98/0x28c [ 50.094569][ T5168] el0_svc_common+0x13c/0x258 [ 50.095385][ T5168] do_el0_svc+0x5c/0x140 [ 50.096138][ T5168] el0_svc+0x78/0x1d0 [ 50.096866][ T5168] el0t_64_sync_handler+0xcc/0xe4 [ 50.097748][ T5168] el0t_64_sync+0x1a0/0x1a4 [ 50.099428][ T5168] ------------[ cut here ]------------ [ 50.100523][ T5168] WARNING: CPU: 0 PID: 5168 at fs/btrfs/qgroup.c:1009 btrfs_quota_enable+0x1100/0x1904 [ 50.102258][ T5168] Modules linked in: [ 50.102997][ T5168] CPU: 0 PID: 5168 Comm: syz-executor.0 Tainted: G W syzkaller #0 [ 50.104701][ T5168] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/02/2026 [ 50.106517][ T5168] pstate: 62400005 (nZCv daif +PAN -UAO +TCO -DIT -SSBS BTYPE=--) [ 50.108126][ T5168] pc : btrfs_quota_enable+0x1100/0x1904 [ 50.109045][ T5168] lr : btrfs_quota_enable+0x1100/0x1904 [ 50.110094][ T5168] sp : ffff800021d37ae0 [ 50.110863][ T5168] x29: ffff800021d37c40 x28: 0000000000001798 x27: ffff0000de590840 [ 50.112286][ T5168] x26: dfff800000000000 x25: fffffffffffffff4 x24: ffff0000d8f74000 [ 50.113742][ T5168] x23: ffff0000d7e89800 x22: ffff7000043a6f6c x21: 1fffe0001bcb2113 [ 50.115206][ T5168] x20: ffff0000de590898 x19: ffff0000dd9f0000 x18: 0000000000000000 [ 50.116755][ T5168] x17: 0000000000000000 x16: ffff80001134e478 x15: 0000000000000000 [ 50.118302][ T5168] x14: 0000000000000001 x13: 1fffe000341cebab x12: 0000000000000000 [ 50.119843][ T5168] x11: ff8080000830061c x10: 0000000000000000 x9 : d6b84390c998ad00 [ 50.121395][ T5168] x8 : d6b84390c998ad00 x7 : 0000000000000001 x6 : 0000000000000001 [ 50.122916][ T5168] x5 : ffff800021d373f8 x4 : ffff80001446f500 x3 : ffff80000850f688 [ 50.124527][ T5168] x2 : 0000000000000001 x1 : 0000000100000000 x0 : 0000000000000026 [ 50.126057][ T5168] Call trace: [ 50.126702][ T5168] btrfs_quota_enable+0x1100/0x1904 [ 50.127731][ T5168] btrfs_ioctl_quota_ctl+0x13c/0x180 [ 50.128816][ T5168] btrfs_ioctl+0x96c/0xa8c [ 50.129732][ T5168] __arm64_sys_ioctl+0x14c/0x1c8 [ 50.130699][ T5168] invoke_syscall+0x98/0x28c [ 50.131563][ T5168] el0_svc_common+0x13c/0x258 [ 50.132405][ T5168] do_el0_svc+0x5c/0x140 [ 50.133293][ T5168] el0_svc+0x78/0x1d0 [ 50.134051][ T5168] el0t_64_sync_handler+0xcc/0xe4 [ 50.134966][ T5168] el0t_64_sync+0x1a0/0x1a4 [ 50.135924][ T5168] irq event stamp: 78576 [ 50.136809][ T5168] hardirqs last enabled at (78575): [] __up_console_sem+0xb4/0xfc [ 50.138808][ T5168] hardirqs last disabled at (78576): [] el1_dbg+0x24/0x80 [ 50.140658][ T5168] softirqs last enabled at (78556): [] handle_softirqs+0xa70/0xc14 [ 50.142434][ T5168] softirqs last disabled at (78541): [] __irq_exit_rcu+0x240/0x434 [ 50.144220][ T5168] ---[ end trace ddfcf5910ad65d0b ]--- [ 50.146121][ T5168] BTRFS: error (device loop0) in btrfs_quota_enable:1009: errno=-12 Out of memory [ 50.147891][ T5168] BTRFS info (device loop0): forced readonly [ 50.333767][ T5189] BTRFS: device fsid a6a605fc-d5f1-4e66-8595-3726e2b761d6 devid 1 transid 8 /dev/loop0 scanned by syz-executor.0 (5189) [ 50.337373][ T5189] BTRFS info (device loop0): using blake2b (blake2b-256-generic) checksum algorithm [ 50.339247][ T5189] BTRFS info (device loop0): using free space tree [ 50.340471][ T5189] BTRFS info (device loop0): has skinny extents [ 50.357754][ T5189] BTRFS info (device loop0): enabling ssd optimizations [ 50.361376][ T5189] FAULT_INJECTION: forcing a failure. [ 50.361376][ T5189] name failslab, interval 1, probability 0, space 0, times 0 [ 50.363854][ T5189] CPU: 1 PID: 5189 Comm: syz-executor.0 Tainted: G W syzkaller #0 [ 50.365641][ T5189] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/02/2026 [ 50.367701][ T5189] Call trace: [ 50.368350][ T5189] dump_backtrace+0x0/0x458 [ 50.369252][ T5189] show_stack+0x2c/0x3c [ 50.370081][ T5189] __dump_stack+0x30/0x40 [ 50.370945][ T5189] dump_stack_lvl+0xf4/0x15c [ 50.371867][ T5189] dump_stack+0x1c/0x5c [ 50.372668][ T5189] should_fail+0x3c8/0x520 [ 50.373468][ T5189] __should_failslab+0xbc/0x10c [ 50.374469][ T5189] should_failslab+0x10/0x28 [ 50.375428][ T5189] slab_pre_alloc_hook+0x64/0xe8 [ 50.376466][ T5189] kmem_cache_alloc_trace+0x98/0x3f0 [ 50.377503][ T5189] btrfs_alloc_root+0x8c/0x9e0 [ 50.378379][ T5189] btrfs_create_tree+0x110/0x9b4 [ 50.379271][ T5189] btrfs_quota_enable+0x370/0x1904 [ 50.380184][ T5189] btrfs_ioctl_quota_ctl+0x13c/0x180 [ 50.381178][ T5189] btrfs_ioctl+0x96c/0xa8c [ 50.381998][ T5189] __arm64_sys_ioctl+0x14c/0x1c8 [ 50.382963][ T5189] invoke_syscall+0x98/0x28c [ 50.383829][ T5189] el0_svc_common+0x13c/0x258 [ 50.384753][ T5189] do_el0_svc+0x5c/0x140 [ 50.385567][ T5189] el0_svc+0x78/0x1d0 [ 50.386327][ T5189] el0t_64_sync_handler+0xcc/0xe4 [ 50.387307][ T5189] el0t_64_sync+0x1a0/0x1a4 [ 50.389792][ T5189] ------------[ cut here ]------------ [ 50.390831][ T5189] WARNING: CPU: 1 PID: 5189 at fs/btrfs/qgroup.c:1009 btrfs_quota_enable+0x1100/0x1904 [ 50.392518][ T5189] Modules linked in: [ 50.393251][ T5189] CPU: 1 PID: 5189 Comm: syz-executor.0 Tainted: G W syzkaller #0 [ 50.394938][ T5189] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/02/2026 [ 50.396770][ T5189] pstate: 62400005 (nZCv daif +PAN -UAO +TCO -DIT -SSBS BTYPE=--) [ 50.398186][ T5189] pc : btrfs_quota_enable+0x1100/0x1904 [ 50.399179][ T5189] lr : btrfs_quota_enable+0x1100/0x1904 [ 50.400175][ T5189] sp : ffff800021d37ae0 [ 50.400889][ T5189] x29: ffff800021d37c40 x28: 0000000000001798 x27: ffff0000dcff9d10 [ 50.402289][ T5189] x26: dfff800000000000 x25: fffffffffffffff4 x24: ffff0000e58d4000 [ 50.403752][ T5189] x23: ffff0000cd403500 x22: ffff7000043a6f6c x21: 1fffe0001b9ff3ad [ 50.405212][ T5189] x20: ffff0000dcff9d68 x19: ffff0000d0388000 x18: 0000000000000000 [ 50.406722][ T5189] x17: 0000000000000000 x16: ffff80001134e478 x15: 0000000000000000 [ 50.408120][ T5189] x14: 0000000000000001 x13: 1fffe000341d2dab x12: 0000000000000000 [ 50.409574][ T5189] x11: ff8080000830061c x10: 0000000000000000 x9 : bdca09e5ba2a4000 [ 50.410939][ T5189] x8 : bdca09e5ba2a4000 x7 : 0000000000000001 x6 : 0000000000000001 [ 50.412278][ T5189] x5 : ffff800021d373f8 x4 : ffff80001446f500 x3 : ffff80000850f688 [ 50.413664][ T5189] x2 : 0000000000000001 x1 : 0000000100000000 x0 : 0000000000000026 [ 50.415026][ T5189] Call trace: [ 50.415590][ T5189] btrfs_quota_enable+0x1100/0x1904 [ 50.416476][ T5189] btrfs_ioctl_quota_ctl+0x13c/0x180 [ 50.417390][ T5189] btrfs_ioctl+0x96c/0xa8c [ 50.418133][ T5189] __arm64_sys_ioctl+0x14c/0x1c8 [ 50.419019][ T5189] invoke_syscall+0x98/0x28c [ 50.419847][ T5189] el0_svc_common+0x13c/0x258 [ 50.420686][ T5189] do_el0_svc+0x5c/0x140 [ 50.421497][ T5189] el0_svc+0x78/0x1d0 [ 50.422242][ T5189] el0t_64_sync_handler+0xcc/0xe4 [ 50.423127][ T5189] el0t_64_sync+0x1a0/0x1a4 [ 50.423928][ T5189] irq event stamp: 78480 [ 50.424689][ T5189] hardirqs last enabled at (78479): [] __up_console_sem+0xb4/0xfc [ 50.426473][ T5189] hardirqs last disabled at (78480): [] el1_dbg+0x24/0x80 [ 50.427920][ T5189] softirqs last enabled at (78460): [] handle_softirqs+0xa70/0xc14 [ 50.429534][ T5189] softirqs last disabled at (78445): [] __irq_exit_rcu+0x240/0x434 [ 50.431194][ T5189] ---[ end trace ddfcf5910ad65d0c ]--- [ 50.433798][ T5189] BTRFS: error (device loop0) in btrfs_quota_enable:1009: errno=-12 Out of memory [ 50.435388][ T5189] BTRFS info (device loop0): forced readonly 1970/01/01 00:00:50 executed programs: 32 [ 50.608822][ T5210] BTRFS: device fsid a6a605fc-d5f1-4e66-8595-3726e2b761d6 devid 1 transid 8 /dev/loop0 scanned by syz-executor.0 (5210) [ 50.612533][ T5210] BTRFS info (device loop0): using blake2b (blake2b-256-generic) checksum algorithm [ 50.614270][ T5210] BTRFS info (device loop0): using free space tree [ 50.615883][ T5210] BTRFS info (device loop0): has skinny extents [ 50.623730][ T5210] BTRFS info (device loop0): enabling ssd optimizations [ 50.628012][ T5210] FAULT_INJECTION: forcing a failure. [ 50.628012][ T5210] name failslab, interval 1, probability 0, space 0, times 0 [ 50.630453][ T5210] CPU: 0 PID: 5210 Comm: syz-executor.0 Tainted: G W syzkaller #0 [ 50.632140][ T5210] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/02/2026 [ 50.634023][ T5210] Call trace: [ 50.634621][ T5210] dump_backtrace+0x0/0x458 [ 50.635434][ T5210] show_stack+0x2c/0x3c [ 50.636182][ T5210] __dump_stack+0x30/0x40 [ 50.636991][ T5210] dump_stack_lvl+0xf4/0x15c [ 50.637812][ T5210] dump_stack+0x1c/0x5c [ 50.638598][ T5210] should_fail+0x3c8/0x520 [ 50.639536][ T5210] __should_failslab+0xbc/0x10c [ 50.640558][ T5210] should_failslab+0x10/0x28 [ 50.641488][ T5210] slab_pre_alloc_hook+0x64/0xe8 [ 50.642438][ T5210] kmem_cache_alloc_trace+0x98/0x3f0 [ 50.643454][ T5210] btrfs_alloc_root+0x8c/0x9e0 [ 50.644367][ T5210] btrfs_create_tree+0x110/0x9b4 [ 50.645332][ T5210] btrfs_quota_enable+0x370/0x1904 [ 50.646324][ T5210] btrfs_ioctl_quota_ctl+0x13c/0x180 [ 50.647305][ T5210] btrfs_ioctl+0x96c/0xa8c [ 50.648162][ T5210] __arm64_sys_ioctl+0x14c/0x1c8 [ 50.649022][ T5210] invoke_syscall+0x98/0x28c [ 50.649856][ T5210] el0_svc_common+0x13c/0x258 [ 50.650660][ T5210] do_el0_svc+0x5c/0x140 [ 50.651383][ T5210] el0_svc+0x78/0x1d0 [ 50.652127][ T5210] el0t_64_sync_handler+0xcc/0xe4 [ 50.653010][ T5210] el0t_64_sync+0x1a0/0x1a4 [ 50.655249][ T5210] ------------[ cut here ]------------ [ 50.656548][ T5210] WARNING: CPU: 0 PID: 5210 at fs/btrfs/qgroup.c:1009 btrfs_quota_enable+0x1100/0x1904 [ 50.658247][ T5210] Modules linked in: [ 50.659007][ T5210] CPU: 0 PID: 5210 Comm: syz-executor.0 Tainted: G W syzkaller #0 [ 50.660804][ T5210] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/02/2026 [ 50.662768][ T5210] pstate: 62400005 (nZCv daif +PAN -UAO +TCO -DIT -SSBS BTYPE=--) [ 50.664315][ T5210] pc : btrfs_quota_enable+0x1100/0x1904 [ 50.665377][ T5210] lr : btrfs_quota_enable+0x1100/0x1904 [ 50.666410][ T5210] sp : ffff8000224e7ae0 [ 50.667229][ T5210] x29: ffff8000224e7c40 x28: 0000000000001798 x27: ffff0000de590a50 [ 50.668831][ T5210] x26: dfff800000000000 x25: fffffffffffffff4 x24: ffff0000e5b0c000 [ 50.670420][ T5210] x23: ffff0000caddd300 x22: ffff70000449cf6c x21: 1fffe0001bcb2155 [ 50.672107][ T5210] x20: ffff0000de590aa8 x19: ffff0000dd9f0000 x18: 0000000000000000 [ 50.673589][ T5210] x17: 0000000000000000 x16: ffff80001134e478 x15: 0000000000000000 [ 50.675022][ T5210] x14: 0000000000000001 x13: 1fffe000341cebab x12: 0000000000000000 [ 50.676402][ T5210] x11: ff8080000830061c x10: 0000000000000000 x9 : 4c8d49c18b1c3700 [ 50.678116][ T5210] x8 : 4c8d49c18b1c3700 x7 : 0000000000000001 x6 : 0000000000000001 [ 50.679887][ T5210] x5 : ffff8000224e73f8 x4 : ffff80001446f500 x3 : ffff80000850f688 [ 50.681536][ T5210] x2 : 0000000000000001 x1 : 0000000100000000 x0 : 0000000000000026 [ 50.683184][ T5210] Call trace: [ 50.683822][ T5210] btrfs_quota_enable+0x1100/0x1904 [ 50.684784][ T5210] btrfs_ioctl_quota_ctl+0x13c/0x180 [ 50.685769][ T5210] btrfs_ioctl+0x96c/0xa8c [ 50.686531][ T5210] __arm64_sys_ioctl+0x14c/0x1c8 [ 50.687373][ T5210] invoke_syscall+0x98/0x28c [ 50.688165][ T5210] el0_svc_common+0x13c/0x258 [ 50.688999][ T5210] do_el0_svc+0x5c/0x140 [ 50.689766][ T5210] el0_svc+0x78/0x1d0 [ 50.690533][ T5210] el0t_64_sync_handler+0xcc/0xe4 [ 50.691415][ T5210] el0t_64_sync+0x1a0/0x1a4 [ 50.692277][ T5210] irq event stamp: 79394 [ 50.693075][ T5210] hardirqs last enabled at (79393): [] __up_console_sem+0xb4/0xfc [ 50.694897][ T5210] hardirqs last disabled at (79394): [] el1_dbg+0x24/0x80 [ 50.696469][ T5210] softirqs last enabled at (79382): [] handle_softirqs+0xa70/0xc14 [ 50.698201][ T5210] softirqs last disabled at (79369): [] __irq_exit_rcu+0x240/0x434 [ 50.700055][ T5210] ---[ end trace ddfcf5910ad65d0d ]--- [ 50.703030][ T5210] BTRFS: error (device loop0) in btrfs_quota_enable:1009: errno=-12 Out of memory [ 50.704651][ T5210] BTRFS info (device loop0): forced readonly [ 50.896941][ T5231] BTRFS: device fsid a6a605fc-d5f1-4e66-8595-3726e2b761d6 devid 1 transid 8 /dev/loop0 scanned by syz-executor.0 (5231) [ 50.902586][ T5231] BTRFS info (device loop0): using blake2b (blake2b-256-generic) checksum algorithm [ 50.904231][ T5231] BTRFS info (device loop0): using free space tree [ 50.905334][ T5231] BTRFS info (device loop0): has skinny extents [ 50.937444][ T5231] BTRFS info (device loop0): enabling ssd optimizations [ 50.941012][ T5231] FAULT_INJECTION: forcing a failure. [ 50.941012][ T5231] name failslab, interval 1, probability 0, space 0, times 0 [ 50.943214][ T5231] CPU: 0 PID: 5231 Comm: syz-executor.0 Tainted: G W syzkaller #0 [ 50.944951][ T5231] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/02/2026 [ 50.946967][ T5231] Call trace: [ 50.947533][ T5231] dump_backtrace+0x0/0x458 [ 50.948355][ T5231] show_stack+0x2c/0x3c [ 50.949102][ T5231] __dump_stack+0x30/0x40 [ 50.949870][ T5231] dump_stack_lvl+0xf4/0x15c [ 50.950673][ T5231] dump_stack+0x1c/0x5c [ 50.951537][ T5231] should_fail+0x3c8/0x520 [ 50.952446][ T5231] __should_failslab+0xbc/0x10c [ 50.953421][ T5231] should_failslab+0x10/0x28 [ 50.954311][ T5231] slab_pre_alloc_hook+0x64/0xe8 [ 50.955173][ T5231] kmem_cache_alloc_trace+0x98/0x3f0 [ 50.956139][ T5231] btrfs_alloc_root+0x8c/0x9e0 [ 50.957000][ T5231] btrfs_create_tree+0x110/0x9b4 [ 50.957847][ T5231] btrfs_quota_enable+0x370/0x1904 [ 50.958758][ T5231] btrfs_ioctl_quota_ctl+0x13c/0x180 [ 50.959728][ T5231] btrfs_ioctl+0x96c/0xa8c [ 50.960549][ T5231] __arm64_sys_ioctl+0x14c/0x1c8 [ 50.961470][ T5231] invoke_syscall+0x98/0x28c [ 50.962339][ T5231] el0_svc_common+0x13c/0x258 [ 50.963233][ T5231] do_el0_svc+0x5c/0x140 [ 50.964050][ T5231] el0_svc+0x78/0x1d0 [ 50.964822][ T5231] el0t_64_sync_handler+0xcc/0xe4 [ 50.965796][ T5231] el0t_64_sync+0x1a0/0x1a4 [ 50.967423][ T5231] ------------[ cut here ]------------ [ 50.968514][ T5231] WARNING: CPU: 0 PID: 5231 at fs/btrfs/qgroup.c:1009 btrfs_quota_enable+0x1100/0x1904 [ 50.970124][ T5231] Modules linked in: [ 50.970779][ T5231] CPU: 0 PID: 5231 Comm: syz-executor.0 Tainted: G W syzkaller #0 [ 50.972200][ T5231] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/02/2026 [ 50.973781][ T5231] pstate: 62400005 (nZCv daif +PAN -UAO +TCO -DIT -SSBS BTYPE=--) [ 50.975061][ T5231] pc : btrfs_quota_enable+0x1100/0x1904 [ 50.976013][ T5231] lr : btrfs_quota_enable+0x1100/0x1904 [ 50.976965][ T5231] sp : ffff8000227b7ae0 [ 50.977751][ T5231] x29: ffff8000227b7c40 x28: 0000000000001798 x27: ffff0000de590580 [ 50.979270][ T5231] x26: dfff800000000000 x25: fffffffffffffff4 x24: ffff0000dacb0000 [ 50.980855][ T5231] x23: ffff0000dcaba700 x22: ffff7000044f6f6c x21: 1fffe0001bcb20bb [ 50.982355][ T5231] x20: ffff0000de5905d8 x19: ffff0000d1dec000 x18: 0000000000000000 [ 50.983746][ T5231] x17: 0000000000000000 x16: ffff80001134e478 x15: 0000000000000000 [ 50.985439][ T5231] x14: 0000000000000001 x13: 1fffe000341cebab x12: 0000000000000000 [ 50.987121][ T5231] x11: ff8080000830061c x10: 0000000000000000 x9 : 26b64e6b616a9300 [ 50.988798][ T5231] x8 : 26b64e6b616a9300 x7 : 0000000000000001 x6 : 0000000000000001 [ 50.990358][ T5231] x5 : ffff8000227b73f8 x4 : ffff80001446f500 x3 : ffff80000850f688 [ 50.991918][ T5231] x2 : 0000000000000001 x1 : 0000000100000000 x0 : 0000000000000026 [ 50.993538][ T5231] Call trace: [ 50.994212][ T5231] btrfs_quota_enable+0x1100/0x1904 [ 50.995159][ T5231] btrfs_ioctl_quota_ctl+0x13c/0x180 [ 50.996268][ T5231] btrfs_ioctl+0x96c/0xa8c [ 50.997096][ T5231] __arm64_sys_ioctl+0x14c/0x1c8 [ 50.998065][ T5231] invoke_syscall+0x98/0x28c [ 50.998999][ T5231] el0_svc_common+0x13c/0x258 [ 51.000031][ T5231] do_el0_svc+0x5c/0x140 [ 51.000973][ T5231] el0_svc+0x78/0x1d0 [ 51.001741][ T5231] el0t_64_sync_handler+0xcc/0xe4 [ 51.002617][ T5231] el0t_64_sync+0x1a0/0x1a4 [ 51.003451][ T5231] irq event stamp: 78674 [ 51.004288][ T5231] hardirqs last enabled at (78673): [] __up_console_sem+0xb4/0xfc [ 51.006187][ T5231] hardirqs last disabled at (78674): [] el1_dbg+0x24/0x80 [ 51.007684][ T5231] softirqs last enabled at (78654): [] handle_softirqs+0xa70/0xc14 [ 51.009350][ T5231] softirqs last disabled at (78615): [] __irq_exit_rcu+0x240/0x434 [ 51.011027][ T5231] ---[ end trace ddfcf5910ad65d0e ]--- [ 51.012698][ T5231] BTRFS: error (device loop0) in btrfs_quota_enable:1009: errno=-12 Out of memory [ 51.014374][ T5231] BTRFS info (device loop0): forced readonly [ 51.183228][ T5252] BTRFS: device fsid a6a605fc-d5f1-4e66-8595-3726e2b761d6 devid 1 transid 8 /dev/loop0 scanned by syz-executor.0 (5252) [ 51.187530][ T5252] BTRFS info (device loop0): using blake2b (blake2b-256-generic) checksum algorithm [ 51.190264][ T5252] BTRFS info (device loop0): using free space tree [ 51.191451][ T5252] BTRFS info (device loop0): has skinny extents [ 51.200854][ T5252] BTRFS info (device loop0): enabling ssd optimizations [ 51.204570][ T5252] FAULT_INJECTION: forcing a failure. [ 51.204570][ T5252] name failslab, interval 1, probability 0, space 0, times 0 [ 51.207256][ T5252] CPU: 0 PID: 5252 Comm: syz-executor.0 Tainted: G W syzkaller #0 [ 51.208870][ T5252] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/02/2026 [ 51.210594][ T5252] Call trace: [ 51.211169][ T5252] dump_backtrace+0x0/0x458 [ 51.211970][ T5252] show_stack+0x2c/0x3c [ 51.212700][ T5252] __dump_stack+0x30/0x40 [ 51.213477][ T5252] dump_stack_lvl+0xf4/0x15c [ 51.214280][ T5252] dump_stack+0x1c/0x5c [ 51.215017][ T5252] should_fail+0x3c8/0x520 [ 51.215835][ T5252] __should_failslab+0xbc/0x10c [ 51.216857][ T5252] should_failslab+0x10/0x28 [ 51.217878][ T5252] slab_pre_alloc_hook+0x64/0xe8 [ 51.218882][ T5252] kmem_cache_alloc_trace+0x98/0x3f0 [ 51.219852][ T5252] btrfs_alloc_root+0x8c/0x9e0 [ 51.220712][ T5252] btrfs_create_tree+0x110/0x9b4 [ 51.221633][ T5252] btrfs_quota_enable+0x370/0x1904 [ 51.222634][ T5252] btrfs_ioctl_quota_ctl+0x13c/0x180 [ 51.223645][ T5252] btrfs_ioctl+0x96c/0xa8c [ 51.224444][ T5252] __arm64_sys_ioctl+0x14c/0x1c8 [ 51.225289][ T5252] invoke_syscall+0x98/0x28c [ 51.226100][ T5252] el0_svc_common+0x13c/0x258 [ 51.226969][ T5252] do_el0_svc+0x5c/0x140 [ 51.227768][ T5252] el0_svc+0x78/0x1d0 [ 51.228472][ T5252] el0t_64_sync_handler+0xcc/0xe4 [ 51.229406][ T5252] el0t_64_sync+0x1a0/0x1a4 [ 51.232563][ T5252] ------------[ cut here ]------------ [ 51.233804][ T5252] WARNING: CPU: 0 PID: 5252 at fs/btrfs/qgroup.c:1009 btrfs_quota_enable+0x1100/0x1904 [ 51.235608][ T5252] Modules linked in: [ 51.236344][ T5252] CPU: 0 PID: 5252 Comm: syz-executor.0 Tainted: G W syzkaller #0 [ 51.237967][ T5252] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/02/2026 [ 51.239686][ T5252] pstate: 62400005 (nZCv daif +PAN -UAO +TCO -DIT -SSBS BTYPE=--) [ 51.241362][ T5252] pc : btrfs_quota_enable+0x1100/0x1904 [ 51.242536][ T5252] lr : btrfs_quota_enable+0x1100/0x1904 [ 51.243715][ T5252] sp : ffff800022c97ae0 [ 51.244621][ T5252] x29: ffff800022c97c40 x28: 0000000000001798 x27: ffff0000de590000 [ 51.246301][ T5252] x26: dfff800000000000 x25: fffffffffffffff4 x24: ffff0000c6088000 [ 51.247729][ T5252] x23: ffff0000cceb1100 x22: ffff700004592f6c x21: 1fffe0001bcb200b [ 51.249282][ T5252] x20: ffff0000de590058 x19: ffff0000dc964000 x18: 0000000000000000 [ 51.250704][ T5252] x17: 0000000000000000 x16: ffff80001134e478 x15: 0000000000000000 [ 51.252076][ T5252] x14: 0000000000000001 x13: 1fffe000341cebab x12: 0000000000000000 [ 51.253471][ T5252] x11: ff8080000830061c x10: 0000000000000000 x9 : 399b33e445bdb400 [ 51.254851][ T5252] x8 : 399b33e445bdb400 x7 : 0000000000000001 x6 : 0000000000000001 [ 51.256214][ T5252] x5 : ffff800022c973f8 x4 : ffff80001446f500 x3 : ffff80000850f688 [ 51.257672][ T5252] x2 : 0000000000000001 x1 : 0000000100000000 x0 : 0000000000000026 [ 51.259161][ T5252] Call trace: [ 51.259756][ T5252] btrfs_quota_enable+0x1100/0x1904 [ 51.260902][ T5252] btrfs_ioctl_quota_ctl+0x13c/0x180 [ 51.262038][ T5252] btrfs_ioctl+0x96c/0xa8c [ 51.263004][ T5252] __arm64_sys_ioctl+0x14c/0x1c8 [ 51.264087][ T5252] invoke_syscall+0x98/0x28c [ 51.265073][ T5252] el0_svc_common+0x13c/0x258 [ 51.266074][ T5252] do_el0_svc+0x5c/0x140 [ 51.267005][ T5252] el0_svc+0x78/0x1d0 [ 51.267837][ T5252] el0t_64_sync_handler+0xcc/0xe4 [ 51.268887][ T5252] el0t_64_sync+0x1a0/0x1a4 [ 51.269827][ T5252] irq event stamp: 78818 [ 51.270736][ T5252] hardirqs last enabled at (78817): [] __up_console_sem+0xb4/0xfc [ 51.272672][ T5252] hardirqs last disabled at (78818): [] el1_dbg+0x24/0x80 [ 51.274284][ T5252] softirqs last enabled at (78792): [] handle_softirqs+0xa70/0xc14 [ 51.276317][ T5252] softirqs last disabled at (78703): [] __irq_exit_rcu+0x240/0x434 [ 51.278218][ T5252] ---[ end trace ddfcf5910ad65d0f ]--- [ 51.281757][ T5252] BTRFS: error (device loop0) in btrfs_quota_enable:1009: errno=-12 Out of memory [ 51.283540][ T5252] BTRFS info (device loop0): forced readonly [ 51.464989][ T5273] BTRFS: device fsid a6a605fc-d5f1-4e66-8595-3726e2b761d6 devid 1 transid 8 /dev/loop0 scanned by syz-executor.0 (5273) [ 51.468521][ T5273] BTRFS info (device loop0): using blake2b (blake2b-256-generic) checksum algorithm [ 51.470377][ T5273] BTRFS info (device loop0): using free space tree [ 51.471592][ T5273] BTRFS info (device loop0): has skinny extents [ 51.505642][ T5273] BTRFS info (device loop0): enabling ssd optimizations [ 51.509329][ T5273] FAULT_INJECTION: forcing a failure. [ 51.509329][ T5273] name failslab, interval 1, probability 0, space 0, times 0 [ 51.511564][ T5273] CPU: 0 PID: 5273 Comm: syz-executor.0 Tainted: G W syzkaller #0 [ 51.513120][ T5273] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/02/2026 [ 51.514941][ T5273] Call trace: [ 51.515545][ T5273] dump_backtrace+0x0/0x458 [ 51.516458][ T5273] show_stack+0x2c/0x3c [ 51.517162][ T5273] __dump_stack+0x30/0x40 [ 51.517960][ T5273] dump_stack_lvl+0xf4/0x15c [ 51.518863][ T5273] dump_stack+0x1c/0x5c [ 51.519698][ T5273] should_fail+0x3c8/0x520 [ 51.520520][ T5273] __should_failslab+0xbc/0x10c [ 51.521467][ T5273] should_failslab+0x10/0x28 [ 51.522291][ T5273] slab_pre_alloc_hook+0x64/0xe8 [ 51.523192][ T5273] kmem_cache_alloc_trace+0x98/0x3f0 [ 51.524148][ T5273] btrfs_alloc_root+0x8c/0x9e0 [ 51.525043][ T5273] btrfs_create_tree+0x110/0x9b4 [ 51.525939][ T5273] btrfs_quota_enable+0x370/0x1904 [ 51.526872][ T5273] btrfs_ioctl_quota_ctl+0x13c/0x180 [ 51.527862][ T5273] btrfs_ioctl+0x96c/0xa8c [ 51.528726][ T5273] __arm64_sys_ioctl+0x14c/0x1c8 [ 51.529594][ T5273] invoke_syscall+0x98/0x28c [ 51.530439][ T5273] el0_svc_common+0x13c/0x258 [ 51.531301][ T5273] do_el0_svc+0x5c/0x140 [ 51.532057][ T5273] el0_svc+0x78/0x1d0 [ 51.532809][ T5273] el0t_64_sync_handler+0xcc/0xe4 [ 51.533767][ T5273] el0t_64_sync+0x1a0/0x1a4 [ 51.535956][ T5273] ------------[ cut here ]------------ [ 51.536950][ T5273] WARNING: CPU: 0 PID: 5273 at fs/btrfs/qgroup.c:1009 btrfs_quota_enable+0x1100/0x1904 [ 51.538493][ T5273] Modules linked in: [ 51.539169][ T5273] CPU: 0 PID: 5273 Comm: syz-executor.0 Tainted: G W syzkaller #0 [ 51.540803][ T5273] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/02/2026 [ 51.542482][ T5273] pstate: 62400005 (nZCv daif +PAN -UAO +TCO -DIT -SSBS BTYPE=--) [ 51.543818][ T5273] pc : btrfs_quota_enable+0x1100/0x1904 [ 51.544775][ T5273] lr : btrfs_quota_enable+0x1100/0x1904 [ 51.545739][ T5273] sp : ffff800022da7ae0 [ 51.546612][ T5273] x29: ffff800022da7c40 x28: 0000000000001798 x27: ffff0000de590e70 [ 51.548265][ T5273] x26: dfff800000000000 x25: fffffffffffffff4 x24: ffff0000c816e000 [ 51.549666][ T5273] x23: ffff0000d25d1200 x22: ffff7000045b4f6c x21: 1fffe0001bcb21d9 [ 51.551186][ T5273] x20: ffff0000de590ec8 x19: ffff0000cd298000 x18: 0000000000000000 [ 51.552695][ T5273] x17: 0000000000000000 x16: ffff80001134e478 x15: 0000000000000000 [ 51.554210][ T5273] x14: 0000000000000001 x13: 1fffe000341cebab x12: 0000000000000000 [ 51.555689][ T5273] x11: ff8080000830061c x10: 0000000000000000 x9 : 6160b04a3fbf5f00 [ 51.557214][ T5273] x8 : 6160b04a3fbf5f00 x7 : 0000000000000001 x6 : 0000000000000001 [ 51.558752][ T5273] x5 : ffff800022da73f8 x4 : ffff80001446f500 x3 : ffff80000850f688 [ 51.560292][ T5273] x2 : 0000000000000001 x1 : 0000000100000000 x0 : 0000000000000026 [ 51.561859][ T5273] Call trace: [ 51.562487][ T5273] btrfs_quota_enable+0x1100/0x1904 [ 51.563477][ T5273] btrfs_ioctl_quota_ctl+0x13c/0x180 [ 51.564502][ T5273] btrfs_ioctl+0x96c/0xa8c [ 51.565367][ T5273] __arm64_sys_ioctl+0x14c/0x1c8 [ 51.566334][ T5273] invoke_syscall+0x98/0x28c [ 51.567227][ T5273] el0_svc_common+0x13c/0x258 [ 51.568082][ T5273] do_el0_svc+0x5c/0x140 [ 51.568863][ T5273] el0_svc+0x78/0x1d0 [ 51.569615][ T5273] el0t_64_sync_handler+0xcc/0xe4 [ 51.570605][ T5273] el0t_64_sync+0x1a0/0x1a4 [ 51.571560][ T5273] irq event stamp: 78806 [ 51.572440][ T5273] hardirqs last enabled at (78805): [] __up_console_sem+0xb4/0xfc [ 51.574361][ T5273] hardirqs last disabled at (78806): [] el1_dbg+0x24/0x80 [ 51.575905][ T5273] softirqs last enabled at (78786): [] handle_softirqs+0xa70/0xc14 [ 51.577728][ T5273] softirqs last disabled at (78763): [] __irq_exit_rcu+0x240/0x434 [ 51.579727][ T5273] ---[ end trace ddfcf5910ad65d10 ]--- [ 51.581663][ T5273] BTRFS: error (device loop0) in btrfs_quota_enable:1009: errno=-12 Out of memory [ 51.583517][ T5273] BTRFS info (device loop0): forced readonly