Warning: Permanently added '10.128.0.94' (ED25519) to the list of known hosts. 1970/01/01 00:00:49 ignoring optional flag "type"="gce" 1970/01/01 00:00:49 parsed 1 programs 1970/01/01 00:00:49 executed programs: 0 [ 49.353574][ T4313] chnl_net:caif_netlink_parms(): no params data found [ 49.373457][ T4313] bridge0: port 1(bridge_slave_0) entered blocking state [ 49.374711][ T4313] bridge0: port 1(bridge_slave_0) entered disabled state [ 49.376271][ T4313] device bridge_slave_0 entered promiscuous mode [ 49.378749][ T4313] bridge0: port 2(bridge_slave_1) entered blocking state [ 49.379968][ T4313] bridge0: port 2(bridge_slave_1) entered disabled state [ 49.381959][ T4313] device bridge_slave_1 entered promiscuous mode [ 49.389695][ T4313] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 49.392843][ T4313] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 49.400328][ T4313] team0: Port device team_slave_0 added [ 49.402273][ T4313] team0: Port device team_slave_1 added [ 49.408642][ T4313] batman_adv: batadv0: Adding interface: batadv_slave_0 [ 49.409646][ T4313] batman_adv: batadv0: The MTU of interface batadv_slave_0 is too small (1500) to handle the transport of batman-adv packets. Packets going over this interface will be fragmented on layer2 which could impact the performance. Setting the MTU to 1560 would solve the problem. [ 49.414897][ T4313] batman_adv: batadv0: Not using interface batadv_slave_0 (retrying later): interface not active [ 49.417302][ T4313] batman_adv: batadv0: Adding interface: batadv_slave_1 [ 49.418382][ T4313] batman_adv: batadv0: The MTU of interface batadv_slave_1 is too small (1500) to handle the transport of batman-adv packets. Packets going over this interface will be fragmented on layer2 which could impact the performance. Setting the MTU to 1560 would solve the problem. [ 49.423379][ T4313] batman_adv: batadv0: Not using interface batadv_slave_1 (retrying later): interface not active [ 49.471440][ T4313] device hsr_slave_0 entered promiscuous mode [ 49.510703][ T4313] device hsr_slave_1 entered promiscuous mode [ 50.078457][ T4313] netdevsim netdevsim0 netdevsim0: renamed from eth0 [ 50.103340][ T4313] netdevsim netdevsim0 netdevsim1: renamed from eth1 [ 50.142260][ T4313] netdevsim netdevsim0 netdevsim2: renamed from eth2 [ 50.181708][ T4313] netdevsim netdevsim0 netdevsim3: renamed from eth3 [ 50.237039][ T4313] bridge0: port 2(bridge_slave_1) entered blocking state [ 50.238208][ T4313] bridge0: port 2(bridge_slave_1) entered forwarding state [ 50.239470][ T4313] bridge0: port 1(bridge_slave_0) entered blocking state [ 50.240602][ T4313] bridge0: port 1(bridge_slave_0) entered forwarding state [ 50.256836][ T4313] 8021q: adding VLAN 0 to HW filter on device bond0 [ 50.262285][ T360] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 50.264049][ T360] bridge0: port 1(bridge_slave_0) entered disabled state [ 50.265507][ T360] bridge0: port 2(bridge_slave_1) entered disabled state [ 50.267354][ T360] IPv6: ADDRCONF(NETDEV_CHANGE): bond0: link becomes ready [ 50.271364][ T4313] 8021q: adding VLAN 0 to HW filter on device team0 [ 50.283594][ T550] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 50.285185][ T550] bridge0: port 1(bridge_slave_0) entered blocking state [ 50.286246][ T550] bridge0: port 1(bridge_slave_0) entered forwarding state [ 50.287654][ T550] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 50.289406][ T550] bridge0: port 2(bridge_slave_1) entered blocking state [ 50.290624][ T550] bridge0: port 2(bridge_slave_1) entered forwarding state [ 50.293542][ T550] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 50.295360][ T550] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 50.297004][ T550] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 50.300625][ T4313] hsr0: Slave B (hsr_slave_1) is not up; please bring it up to get a fully working HSR network [ 50.302528][ T4313] IPv6: ADDRCONF(NETDEV_CHANGE): hsr0: link becomes ready [ 50.306850][ T550] IPv6: ADDRCONF(NETDEV_CHANGE): team0: link becomes ready [ 50.308450][ T550] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 50.347770][ T4313] 8021q: adding VLAN 0 to HW filter on device batadv0 [ 50.351934][ T360] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan0: link becomes ready [ 50.353231][ T360] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan1: link becomes ready [ 50.358361][ T360] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_virt_wifi: link becomes ready [ 50.359870][ T360] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_virt_wifi: link becomes ready [ 50.367968][ T360] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_vlan: link becomes ready [ 50.369503][ T360] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_vlan: link becomes ready [ 50.371755][ T360] IPv6: ADDRCONF(NETDEV_CHANGE): vlan0: link becomes ready [ 50.373235][ T360] IPv6: ADDRCONF(NETDEV_CHANGE): vlan1: link becomes ready [ 50.376071][ T4313] device veth0_vlan entered promiscuous mode [ 50.379428][ T4313] device veth1_vlan entered promiscuous mode [ 50.387788][ T360] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan0: link becomes ready [ 50.389194][ T360] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan1: link becomes ready [ 50.390703][ T360] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_macvtap: link becomes ready [ 50.392134][ T360] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_macvtap: link becomes ready [ 50.395037][ T4313] device veth0_macvtap entered promiscuous mode [ 50.397516][ T4313] device veth1_macvtap entered promiscuous mode [ 50.403014][ T4313] batman_adv: batadv0: Interface activated: batadv_slave_0 [ 50.404300][ T550] IPv6: ADDRCONF(NETDEV_CHANGE): macvtap0: link becomes ready [ 50.405821][ T550] IPv6: ADDRCONF(NETDEV_CHANGE): macsec0: link becomes ready [ 50.407312][ T550] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_0: link becomes ready [ 50.408830][ T550] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_batadv: link becomes ready [ 50.417655][ T4313] batman_adv: batadv0: Interface activated: batadv_slave_1 [ 50.418958][ T550] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_1: link becomes ready [ 50.420966][ T550] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_batadv: link becomes ready [ 50.423876][ T4313] netdevsim netdevsim0 netdevsim0: set [1, 0] type 2 family 0 port 6081 - 0 [ 50.425308][ T4313] netdevsim netdevsim0 netdevsim1: set [1, 0] type 2 family 0 port 6081 - 0 [ 50.426737][ T4313] netdevsim netdevsim0 netdevsim2: set [1, 0] type 2 family 0 port 6081 - 0 [ 50.428161][ T4313] netdevsim netdevsim0 netdevsim3: set [1, 0] type 2 family 0 port 6081 - 0 [ 50.584506][ T4449] loop0: detected capacity change from 0 to 32768 [ 50.588079][ T4449] BTRFS: device fsid ed167579-eb65-4e76-9a50-61ac97e9b59d devid 1 transid 8 /dev/loop0 scanned by syz-executor.0 (4449) [ 50.594044][ T4449] BTRFS info (device loop0): using sha256 (sha256-ce) checksum algorithm [ 50.595508][ T4449] BTRFS info (device loop0): enabling auto defrag [ 50.596648][ T4449] BTRFS info (device loop0): enabling disk space caching [ 50.597896][ T4449] BTRFS info (device loop0): disabling tree log [ 50.598857][ T4449] BTRFS info (device loop0): force clearing of disk cache [ 50.600049][ T4449] BTRFS info (device loop0): force zlib compression, level 3 [ 50.601904][ T4449] BTRFS info (device loop0): disabling disk space caching [ 50.603139][ T4449] BTRFS info (device loop0): has skinny extents [ 50.665817][ T4449] BTRFS info (device loop0): enabling ssd optimizations [ 50.668039][ T4449] BTRFS info (device loop0): clearing free space tree [ 50.669465][ T4449] BTRFS info (device loop0): clearing compat-ro feature flag for FREE_SPACE_TREE (0x1) [ 50.672310][ T4449] BTRFS info (device loop0): clearing compat-ro feature flag for FREE_SPACE_TREE_VALID (0x2) [ 50.692608][ T4449] FAULT_INJECTION: forcing a failure. [ 50.692608][ T4449] name failslab, interval 1, probability 0, space 0, times 1 [ 50.694821][ T4449] CPU: 0 PID: 4449 Comm: syz-executor.0 Not tainted syzkaller #0 [ 50.696151][ T4449] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/18/2026 [ 50.697693][ T4449] Call trace: [ 50.698147][ T4449] dump_backtrace+0x0/0x458 [ 50.698934][ T4449] show_stack+0x2c/0x3c [ 50.699621][ T4449] __dump_stack+0x30/0x40 [ 50.700284][ T4449] dump_stack_lvl+0xf4/0x15c [ 50.700993][ T4449] dump_stack+0x1c/0x5c [ 50.701609][ T4449] should_fail+0x3bc/0x514 [ 50.702280][ T4449] __should_failslab+0xbc/0x10c [ 50.703032][ T4449] should_failslab+0x10/0x28 [ 50.703726][ T4449] slab_pre_alloc_hook+0x64/0xe8 [ 50.704479][ T4449] kmem_cache_alloc+0x94/0x3d4 [ 50.705184][ T4449] start_transaction+0x4d0/0x13ec [ 50.705937][ T4449] btrfs_attach_transaction_barrier+0x30/0xac [ 50.706825][ T4449] btrfs_sync_fs+0x13c/0xb24 [ 50.707566][ T4449] sync_filesystem+0x1a0/0x218 [ 50.708320][ T4449] btrfs_remount+0x198/0x12b0 [ 50.709087][ T4449] legacy_reconfigure+0xf8/0x110 [ 50.709913][ T4449] reconfigure_super+0x1d4/0x6f4 [ 50.710721][ T4449] path_mount+0xc88/0x1008 [ 50.711421][ T4449] __arm64_sys_mount+0x514/0x5f0 [ 50.712181][ T4449] invoke_syscall+0x98/0x2b0 [ 50.712968][ T4449] el0_svc_common+0x138/0x258 [ 50.713761][ T4449] do_el0_svc+0x58/0x13c [ 50.714447][ T4449] el0_svc+0x78/0x1d0 [ 50.715076][ T4449] el0t_64_sync_handler+0xcc/0xe4 [ 50.715930][ T4449] el0t_64_sync+0x1a0/0x1a4 [ 50.941840][ T4521] loop0: detected capacity change from 0 to 32768 [ 50.951214][ T4521] BTRFS: device fsid ed167579-eb65-4e76-9a50-61ac97e9b59d devid 1 transid 8 /dev/loop0 scanned by syz-executor.0 (4521) [ 50.959023][ T4521] BTRFS info (device loop0): using sha256 (sha256-ce) checksum algorithm [ 50.961602][ T4521] BTRFS info (device loop0): enabling auto defrag [ 50.964073][ T4521] BTRFS info (device loop0): enabling disk space caching [ 50.965866][ T4521] BTRFS info (device loop0): disabling tree log [ 50.976890][ T4521] BTRFS info (device loop0): force clearing of disk cache [ 50.978186][ T4521] BTRFS info (device loop0): force zlib compression, level 3 [ 50.979510][ T4521] BTRFS info (device loop0): disabling disk space caching [ 50.981000][ T4521] BTRFS info (device loop0): has skinny extents [ 51.025997][ T4521] BTRFS info (device loop0): enabling ssd optimizations [ 51.027765][ T4521] BTRFS info (device loop0): clearing free space tree [ 51.028873][ T4521] BTRFS info (device loop0): clearing compat-ro feature flag for FREE_SPACE_TREE (0x1) [ 51.030401][ T4521] BTRFS info (device loop0): clearing compat-ro feature flag for FREE_SPACE_TREE_VALID (0x2) [ 51.043978][ T4521] FAULT_INJECTION: forcing a failure. [ 51.043978][ T4521] name failslab, interval 1, probability 0, space 0, times 0 [ 51.046275][ T4521] CPU: 1 PID: 4521 Comm: syz-executor.0 Not tainted syzkaller #0 [ 51.047599][ T4521] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/18/2026 [ 51.049268][ T4521] Call trace: [ 51.049775][ T4521] dump_backtrace+0x0/0x458 [ 51.050478][ T4521] show_stack+0x2c/0x3c [ 51.051173][ T4521] __dump_stack+0x30/0x40 [ 51.051934][ T4521] dump_stack_lvl+0xf4/0x15c [ 51.052739][ T4521] dump_stack+0x1c/0x5c [ 51.053445][ T4521] should_fail+0x3bc/0x514 [ 51.054219][ T4521] __should_failslab+0xbc/0x10c [ 51.055138][ T4521] should_failslab+0x10/0x28 [ 51.055914][ T4521] slab_pre_alloc_hook+0x64/0xe8 [ 51.056764][ T4521] kmem_cache_alloc+0x94/0x3d4 [ 51.057567][ T4521] start_transaction+0x4d0/0x13ec [ 51.058417][ T4521] btrfs_attach_transaction_barrier+0x30/0xac [ 51.059397][ T4521] btrfs_sync_fs+0x13c/0xb24 [ 51.060140][ T4521] sync_filesystem+0x1a0/0x218 [ 51.060912][ T4521] btrfs_remount+0x198/0x12b0 [ 51.061684][ T4521] legacy_reconfigure+0xf8/0x110 [ 51.062456][ T4521] reconfigure_super+0x1d4/0x6f4 [ 51.063318][ T4521] path_mount+0xc88/0x1008 [ 51.064088][ T4521] __arm64_sys_mount+0x514/0x5f0 [ 51.064851][ T4521] invoke_syscall+0x98/0x2b0 [ 51.065591][ T4521] el0_svc_common+0x138/0x258 [ 51.066304][ T4521] do_el0_svc+0x58/0x13c [ 51.066946][ T4521] el0_svc+0x78/0x1d0 [ 51.067592][ T4521] el0t_64_sync_handler+0xcc/0xe4 [ 51.068436][ T4521] el0t_64_sync+0x1a0/0x1a4 [ 51.312318][ T4591] loop0: detected capacity change from 0 to 32768 [ 51.316944][ T4591] BTRFS: device fsid ed167579-eb65-4e76-9a50-61ac97e9b59d devid 1 transid 8 /dev/loop0 scanned by syz-executor.0 (4591) [ 51.321852][ T4591] BTRFS info (device loop0): using sha256 (sha256-ce) checksum algorithm [ 51.323216][ T4591] BTRFS info (device loop0): enabling auto defrag [ 51.324361][ T4591] BTRFS info (device loop0): enabling disk space caching [ 51.325525][ T4591] BTRFS info (device loop0): disabling tree log [ 51.326525][ T4591] BTRFS info (device loop0): force clearing of disk cache [ 51.327727][ T4591] BTRFS info (device loop0): force zlib compression, level 3 [ 51.328919][ T4591] BTRFS info (device loop0): disabling disk space caching [ 51.330167][ T4591] BTRFS info (device loop0): has skinny extents [ 51.371177][ T4504] Bluetooth: hci0: command 0x0409 tx timeout [ 51.407381][ T4591] BTRFS info (device loop0): enabling ssd optimizations [ 51.409056][ T4591] BTRFS info (device loop0): clearing free space tree [ 51.410250][ T4591] BTRFS info (device loop0): clearing compat-ro feature flag for FREE_SPACE_TREE (0x1) [ 51.412079][ T4591] BTRFS info (device loop0): clearing compat-ro feature flag for FREE_SPACE_TREE_VALID (0x2) [ 51.423552][ T4591] FAULT_INJECTION: forcing a failure. [ 51.423552][ T4591] name failslab, interval 1, probability 0, space 0, times 0 [ 51.425781][ T4591] CPU: 0 PID: 4591 Comm: syz-executor.0 Not tainted syzkaller #0 [ 51.427057][ T4591] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/18/2026 [ 51.428733][ T4591] Call trace: [ 51.429270][ T4591] dump_backtrace+0x0/0x458 [ 51.430028][ T4591] show_stack+0x2c/0x3c [ 51.430719][ T4591] __dump_stack+0x30/0x40 [ 51.431417][ T4591] dump_stack_lvl+0xf4/0x15c [ 51.432133][ T4591] dump_stack+0x1c/0x5c [ 51.432822][ T4591] should_fail+0x3bc/0x514 [ 51.433509][ T4591] __should_failslab+0xbc/0x10c [ 51.434269][ T4591] should_failslab+0x10/0x28 [ 51.434979][ T4591] slab_pre_alloc_hook+0x64/0xe8 [ 51.435807][ T4591] kmem_cache_alloc+0x94/0x3d4 [ 51.436509][ T4591] btrfs_alloc_path+0x5c/0x68 [ 51.437250][ T4591] __btrfs_free_extent+0x1a8/0x1abc [ 51.438093][ T4591] __btrfs_run_delayed_refs+0xbf0/0x348c [ 51.439031][ T4591] btrfs_run_delayed_refs+0x124/0x458 [ 51.439919][ T4591] btrfs_commit_transaction+0x1e0/0x3078 [ 51.440809][ T4591] btrfs_sync_fs+0x628/0xb24 [ 51.441535][ T4591] sync_filesystem+0x1a0/0x218 [ 51.442313][ T4591] btrfs_remount+0x198/0x12b0 [ 51.443092][ T4591] legacy_reconfigure+0xf8/0x110 [ 51.443959][ T4591] reconfigure_super+0x1d4/0x6f4 [ 51.444760][ T4591] path_mount+0xc88/0x1008 [ 51.445513][ T4591] __arm64_sys_mount+0x514/0x5f0 [ 51.446359][ T4591] invoke_syscall+0x98/0x2b0 [ 51.447148][ T4591] el0_svc_common+0x138/0x258 [ 51.447933][ T4591] do_el0_svc+0x58/0x13c [ 51.448632][ T4591] el0_svc+0x78/0x1d0 [ 51.449300][ T4591] el0t_64_sync_handler+0xcc/0xe4 [ 51.450153][ T4591] el0t_64_sync+0x1a0/0x1a4 [ 51.463389][ T4591] BTRFS error (device loop0): failed to run delayed ref for logical 5255168 num_bytes 4096 type 176 action 2 ref_mod 1: -12 [ 51.468031][ T4591] ------------[ cut here ]------------ [ 51.469242][ T4591] WARNING: CPU: 0 PID: 4591 at fs/btrfs/extent-tree.c:2173 btrfs_run_delayed_refs+0x3e4/0x458 [ 51.470908][ T4591] Modules linked in: [ 51.471516][ T4591] CPU: 0 PID: 4591 Comm: syz-executor.0 Not tainted syzkaller #0 [ 51.472727][ T4591] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/18/2026 [ 51.474320][ T4591] pstate: 62400005 (nZCv daif +PAN -UAO +TCO -DIT -SSBS BTYPE=--) [ 51.475626][ T4591] pc : btrfs_run_delayed_refs+0x3e4/0x458 [ 51.476582][ T4591] lr : btrfs_run_delayed_refs+0x3e4/0x458 [ 51.477551][ T4591] sp : ffff80001f497530 [ 51.478221][ T4591] x29: ffff80001f497540 x28: ffff0000ce47e000 x27: dfff800000000000 [ 51.479602][ T4591] x26: ffff0000ce47e024 x25: ffff0000db048000 x24: 1fffe0001bcc1a79 [ 51.480854][ T4591] x23: 1fffe0001bcc1a79 x22: ffff0000de60d3c8 x21: 00000000fffffff4 [ 51.482118][ T4591] x20: 0000000000000051 x19: ffff0000de60d370 x18: 0000000000000001 [ 51.483426][ T4591] x17: 0000000000000000 x16: ffff80001125f020 x15: 00000000ffffffff [ 51.484659][ T4591] x14: 0000000000000001 x13: 1fffe000341f05ab x12: 0000000000ff0100 [ 51.485997][ T4591] x11: 0000000000000000 x10: 0000000000000000 x9 : e1e32ffa4f607100 [ 51.487341][ T4591] x8 : e1e32ffa4f607100 x7 : 0000000000000001 x6 : 0000000000000001 [ 51.488643][ T4591] x5 : ffff80001f496e38 x4 : ffff80001437f3e0 x3 : ffff800008509220 [ 51.490224][ T4591] x2 : 0000000000000001 x1 : 0000000100000000 x0 : 0000000000000026 [ 51.491546][ T4591] Call trace: [ 51.492103][ T4591] btrfs_run_delayed_refs+0x3e4/0x458 [ 51.493002][ T4591] btrfs_commit_transaction+0x1e0/0x3078 [ 51.493928][ T4591] btrfs_sync_fs+0x628/0xb24 [ 51.494705][ T4591] sync_filesystem+0x1a0/0x218 [ 51.495500][ T4591] btrfs_remount+0x198/0x12b0 [ 51.496269][ T4591] legacy_reconfigure+0xf8/0x110 [ 51.497083][ T4591] reconfigure_super+0x1d4/0x6f4 [ 51.497887][ T4591] path_mount+0xc88/0x1008 [ 51.498646][ T4591] __arm64_sys_mount+0x514/0x5f0 [ 51.499547][ T4591] invoke_syscall+0x98/0x2b0 [ 51.500287][ T4591] el0_svc_common+0x138/0x258 [ 51.501005][ T4591] do_el0_svc+0x58/0x13c [ 51.501686][ T4591] el0_svc+0x78/0x1d0 [ 51.502301][ T4591] el0t_64_sync_handler+0xcc/0xe4 [ 51.503111][ T4591] el0t_64_sync+0x1a0/0x1a4 [ 51.503787][ T4591] irq event stamp: 80508 [ 51.504478][ T4591] hardirqs last enabled at (80507): [] __up_console_sem+0xb4/0xfc [ 51.506121][ T4591] hardirqs last disabled at (80508): [] el1_dbg+0x24/0x80 [ 51.507617][ T4591] softirqs last enabled at (80460): [] handle_softirqs+0xa40/0xbe4 [ 51.509146][ T4591] softirqs last disabled at (80387): [] __irq_exit_rcu+0x240/0x43c [ 51.510658][ T4591] ---[ end trace 7b9430bdaa3c86c1 ]--- [ 51.514372][ T4591] BTRFS: error (device loop0) in btrfs_run_delayed_refs:2173: errno=-12 Out of memory [ 51.516031][ T4591] BTRFS info (device loop0): forced readonly [ 51.516973][ T4591] BTRFS error (device loop0): Remounting read-write after error is not allowed [ 51.712428][ T4664] loop0: detected capacity change from 0 to 32768 [ 51.715131][ T4664] BTRFS: device fsid ed167579-eb65-4e76-9a50-61ac97e9b59d devid 1 transid 8 /dev/loop0 scanned by syz-executor.0 (4664) [ 51.722803][ T4664] BTRFS info (device loop0): using sha256 (sha256-ce) checksum algorithm [ 51.724325][ T4664] BTRFS info (device loop0): enabling auto defrag [ 51.725530][ T4664] BTRFS info (device loop0): enabling disk space caching [ 51.726726][ T4664] BTRFS info (device loop0): disabling tree log [ 51.727707][ T4664] BTRFS info (device loop0): force clearing of disk cache [ 51.728976][ T4664] BTRFS info (device loop0): force zlib compression, level 3 [ 51.730278][ T4664] BTRFS info (device loop0): disabling disk space caching [ 51.732234][ T4664] BTRFS info (device loop0): has skinny extents [ 51.787439][ T4664] BTRFS info (device loop0): enabling ssd optimizations [ 51.789020][ T4664] BTRFS info (device loop0): clearing free space tree [ 51.790121][ T4664] BTRFS info (device loop0): clearing compat-ro feature flag for FREE_SPACE_TREE (0x1) [ 51.791989][ T4664] BTRFS info (device loop0): clearing compat-ro feature flag for FREE_SPACE_TREE_VALID (0x2) [ 51.811757][ T4664] FAULT_INJECTION: forcing a failure. [ 51.811757][ T4664] name failslab, interval 1, probability 0, space 0, times 0 [ 51.813966][ T4664] CPU: 1 PID: 4664 Comm: syz-executor.0 Tainted: G W syzkaller #0 [ 51.815390][ T4664] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/18/2026 [ 51.817028][ T4664] Call trace: [ 51.817558][ T4664] dump_backtrace+0x0/0x458 [ 51.818323][ T4664] show_stack+0x2c/0x3c [ 51.819005][ T4664] __dump_stack+0x30/0x40 [ 51.819690][ T4664] dump_stack_lvl+0xf4/0x15c [ 51.820438][ T4664] dump_stack+0x1c/0x5c [ 51.821071][ T4664] should_fail+0x3bc/0x514 [ 51.821746][ T4664] __should_failslab+0xbc/0x10c [ 51.822585][ T4664] should_failslab+0x10/0x28 [ 51.823369][ T4664] slab_pre_alloc_hook+0x64/0xe8 [ 51.824225][ T4664] kmem_cache_alloc_trace+0x98/0x3ec [ 51.825112][ T4664] bdi_split_work_to_wbs+0x3f4/0x77c [ 51.825966][ T4664] __writeback_inodes_sb_nr+0x1ac/0x224 [ 51.826839][ T4664] writeback_inodes_sb+0x78/0x8c [ 51.827622][ T4664] sync_filesystem+0xa0/0x218 [ 51.828363][ T4664] btrfs_remount+0x198/0x12b0 [ 51.829105][ T4664] legacy_reconfigure+0xf8/0x110 [ 51.829903][ T4664] reconfigure_super+0x1d4/0x6f4 [ 51.830722][ T4664] path_mount+0xc88/0x1008 [ 51.831464][ T4664] __arm64_sys_mount+0x514/0x5f0 [ 51.832287][ T4664] invoke_syscall+0x98/0x2b0 [ 51.832992][ T4664] el0_svc_common+0x138/0x258 [ 51.833705][ T4664] do_el0_svc+0x58/0x13c [ 51.834438][ T4664] el0_svc+0x78/0x1d0 [ 51.835179][ T4664] el0t_64_sync_handler+0xcc/0xe4 [ 51.836022][ T4664] el0t_64_sync+0x1a0/0x1a4 [ 52.051588][ T4719] loop0: detected capacity change from 0 to 32768 [ 52.053993][ T4719] BTRFS: device fsid ed167579-eb65-4e76-9a50-61ac97e9b59d devid 1 transid 8 /dev/loop0 scanned by syz-executor.0 (4719) [ 52.062324][ T4719] BTRFS info (device loop0): using sha256 (sha256-ce) checksum algorithm [ 52.063735][ T4719] BTRFS info (device loop0): enabling auto defrag [ 52.064880][ T4719] BTRFS info (device loop0): enabling disk space caching [ 52.066094][ T4719] BTRFS info (device loop0): disabling tree log [ 52.067164][ T4719] BTRFS info (device loop0): force clearing of disk cache [ 52.068317][ T4719] BTRFS info (device loop0): force zlib compression, level 3 [ 52.069516][ T4719] BTRFS info (device loop0): disabling disk space caching [ 52.071403][ T4719] BTRFS info (device loop0): has skinny extents [ 52.128363][ T4719] BTRFS info (device loop0): enabling ssd optimizations [ 52.129988][ T4719] BTRFS info (device loop0): clearing free space tree [ 52.131785][ T4719] BTRFS info (device loop0): clearing compat-ro feature flag for FREE_SPACE_TREE (0x1) [ 52.133516][ T4719] BTRFS info (device loop0): clearing compat-ro feature flag for FREE_SPACE_TREE_VALID (0x2) [ 52.146410][ T4719] FAULT_INJECTION: forcing a failure. [ 52.146410][ T4719] name failslab, interval 1, probability 0, space 0, times 0 [ 52.148757][ T4719] CPU: 0 PID: 4719 Comm: syz-executor.0 Tainted: G W syzkaller #0 [ 52.150189][ T4719] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/18/2026 [ 52.151955][ T4719] Call trace: [ 52.152528][ T4719] dump_backtrace+0x0/0x458 [ 52.153257][ T4719] show_stack+0x2c/0x3c [ 52.153954][ T4719] __dump_stack+0x30/0x40 [ 52.154698][ T4719] dump_stack_lvl+0xf4/0x15c [ 52.155454][ T4719] dump_stack+0x1c/0x5c [ 52.156170][ T4719] should_fail+0x3bc/0x514 [ 52.156920][ T4719] __should_failslab+0xbc/0x10c [ 52.157687][ T4719] should_failslab+0x10/0x28 [ 52.158457][ T4719] slab_pre_alloc_hook+0x64/0xe8 [ 52.159288][ T4719] kmem_cache_alloc+0x94/0x3d4 [ 52.160096][ T4719] start_transaction+0x4d0/0x13ec [ 52.160953][ T4719] btrfs_attach_transaction_barrier+0x30/0xac [ 52.161978][ T4719] btrfs_sync_fs+0x13c/0xb24 [ 52.162752][ T4719] sync_filesystem+0x1a0/0x218 [ 52.163497][ T4719] btrfs_remount+0x198/0x12b0 [ 52.164206][ T4719] legacy_reconfigure+0xf8/0x110 [ 52.165001][ T4719] reconfigure_super+0x1d4/0x6f4 [ 52.165833][ T4719] path_mount+0xc88/0x1008 [ 52.166549][ T4719] __arm64_sys_mount+0x514/0x5f0 [ 52.167358][ T4719] invoke_syscall+0x98/0x2b0 [ 52.168084][ T4719] el0_svc_common+0x138/0x258 [ 52.168811][ T4719] do_el0_svc+0x58/0x13c [ 52.169509][ T4719] el0_svc+0x78/0x1d0 [ 52.170130][ T4719] el0t_64_sync_handler+0xcc/0xe4 [ 52.170961][ T4719] el0t_64_sync+0x1a0/0x1a4 [ 52.315227][ T4769] loop0: detected capacity change from 0 to 32768 [ 52.317815][ T4769] BTRFS: device fsid ed167579-eb65-4e76-9a50-61ac97e9b59d devid 1 transid 8 /dev/loop0 scanned by syz-executor.0 (4769) [ 52.321413][ T4769] BTRFS info (device loop0): using sha256 (sha256-ce) checksum algorithm [ 52.322875][ T4769] BTRFS info (device loop0): enabling auto defrag [ 52.323919][ T4769] BTRFS info (device loop0): enabling disk space caching [ 52.325060][ T4769] BTRFS info (device loop0): disabling tree log [ 52.326112][ T4769] BTRFS info (device loop0): force clearing of disk cache [ 52.327317][ T4769] BTRFS info (device loop0): force zlib compression, level 3 [ 52.328584][ T4769] BTRFS info (device loop0): disabling disk space caching [ 52.329750][ T4769] BTRFS info (device loop0): has skinny extents [ 52.339316][ T4769] BTRFS info (device loop0): enabling ssd optimizations [ 52.341331][ T4769] BTRFS info (device loop0): clearing free space tree [ 52.342495][ T4769] BTRFS info (device loop0): clearing compat-ro feature flag for FREE_SPACE_TREE (0x1) [ 52.344213][ T4769] BTRFS info (device loop0): clearing compat-ro feature flag for FREE_SPACE_TREE_VALID (0x2) [ 52.351273][ T4769] FAULT_INJECTION: forcing a failure. [ 52.351273][ T4769] name failslab, interval 1, probability 0, space 0, times 0 [ 52.353466][ T4769] CPU: 0 PID: 4769 Comm: syz-executor.0 Tainted: G W syzkaller #0 [ 52.355052][ T4769] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/18/2026 [ 52.356745][ T4769] Call trace: [ 52.357273][ T4769] dump_backtrace+0x0/0x458 [ 52.357971][ T4769] show_stack+0x2c/0x3c [ 52.358699][ T4769] __dump_stack+0x30/0x40 [ 52.359402][ T4769] dump_stack_lvl+0xf4/0x15c [ 52.360178][ T4769] dump_stack+0x1c/0x5c [ 52.360881][ T4769] should_fail+0x3bc/0x514 [ 52.361611][ T4769] __should_failslab+0xbc/0x10c [ 52.362419][ T4769] should_failslab+0x10/0x28 [ 52.363160][ T4769] slab_pre_alloc_hook+0x64/0xe8 [ 52.363970][ T4769] kmem_cache_alloc+0x94/0x3d4 [ 52.364750][ T4769] start_transaction+0x4d0/0x13ec [ 52.365582][ T4769] btrfs_attach_transaction_barrier+0x30/0xac [ 52.366589][ T4769] btrfs_sync_fs+0x13c/0xb24 [ 52.367378][ T4769] sync_filesystem+0x1a0/0x218 [ 52.368105][ T4769] btrfs_remount+0x198/0x12b0 [ 52.368867][ T4769] legacy_reconfigure+0xf8/0x110 [ 52.369616][ T4769] reconfigure_super+0x1d4/0x6f4 [ 52.370412][ T4769] path_mount+0xc88/0x1008 [ 52.371113][ T4769] __arm64_sys_mount+0x514/0x5f0 [ 52.371959][ T4769] invoke_syscall+0x98/0x2b0 [ 52.372701][ T4769] el0_svc_common+0x138/0x258 [ 52.373437][ T4769] do_el0_svc+0x58/0x13c [ 52.374145][ T4769] el0_svc+0x78/0x1d0 [ 52.374816][ T4769] el0t_64_sync_handler+0xcc/0xe4 [ 52.375642][ T4769] el0t_64_sync+0x1a0/0x1a4 [ 52.560972][ T4790] loop0: detected capacity change from 0 to 32768 [ 52.563497][ T4790] BTRFS: device fsid ed167579-eb65-4e76-9a50-61ac97e9b59d devid 1 transid 8 /dev/loop0 scanned by syz-executor.0 (4790) [ 52.566657][ T4790] BTRFS info (device loop0): using sha256 (sha256-ce) checksum algorithm [ 52.568152][ T4790] BTRFS info (device loop0): enabling auto defrag [ 52.569321][ T4790] BTRFS info (device loop0): enabling disk space caching [ 52.570669][ T4790] BTRFS info (device loop0): disabling tree log [ 52.571975][ T4790] BTRFS info (device loop0): force clearing of disk cache [ 52.573197][ T4790] BTRFS info (device loop0): force zlib compression, level 3 [ 52.574432][ T4790] BTRFS info (device loop0): disabling disk space caching [ 52.575710][ T4790] BTRFS info (device loop0): has skinny extents [ 52.587267][ T4790] BTRFS info (device loop0): enabling ssd optimizations [ 52.588954][ T4790] BTRFS info (device loop0): clearing free space tree [ 52.590200][ T4790] BTRFS info (device loop0): clearing compat-ro feature flag for FREE_SPACE_TREE (0x1) [ 52.592820][ T4790] BTRFS info (device loop0): clearing compat-ro feature flag for FREE_SPACE_TREE_VALID (0x2) [ 52.598081][ T4790] FAULT_INJECTION: forcing a failure. [ 52.598081][ T4790] name failslab, interval 1, probability 0, space 0, times 0 [ 52.600277][ T4790] CPU: 0 PID: 4790 Comm: syz-executor.0 Tainted: G W syzkaller #0 [ 52.601724][ T4790] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/18/2026 [ 52.603410][ T4790] Call trace: [ 52.603960][ T4790] dump_backtrace+0x0/0x458 [ 52.604691][ T4790] show_stack+0x2c/0x3c [ 52.605334][ T4790] __dump_stack+0x30/0x40 [ 52.606010][ T4790] dump_stack_lvl+0xf4/0x15c [ 52.606778][ T4790] dump_stack+0x1c/0x5c [ 52.607446][ T4790] should_fail+0x3bc/0x514 [ 52.608197][ T4790] __should_failslab+0xbc/0x10c [ 52.608998][ T4790] should_failslab+0x10/0x28 [ 52.609761][ T4790] slab_pre_alloc_hook+0x64/0xe8 [ 52.610595][ T4790] kmem_cache_alloc_trace+0x98/0x3ec [ 52.611525][ T4790] bdi_split_work_to_wbs+0x3f4/0x77c [ 52.612430][ T4790] sync_inodes_sb+0x188/0x844 [ 52.613210][ T4790] sync_filesystem+0x160/0x218 [ 52.613948][ T4790] btrfs_remount+0x198/0x12b0 [ 52.614793][ T4790] legacy_reconfigure+0xf8/0x110 [ 52.615623][ T4790] reconfigure_super+0x1d4/0x6f4 [ 52.616454][ T4790] path_mount+0xc88/0x1008 [ 52.617219][ T4790] __arm64_sys_mount+0x514/0x5f0 [ 52.618079][ T4790] invoke_syscall+0x98/0x2b0 [ 52.618826][ T4790] el0_svc_common+0x138/0x258 [ 52.619572][ T4790] do_el0_svc+0x58/0x13c [ 52.620278][ T4790] el0_svc+0x78/0x1d0 [ 52.620893][ T4790] el0t_64_sync_handler+0xcc/0xe4 [ 52.621715][ T4790] el0t_64_sync+0x1a0/0x1a4 [ 52.799375][ T4811] loop0: detected capacity change from 0 to 32768 [ 52.801912][ T4811] BTRFS: device fsid ed167579-eb65-4e76-9a50-61ac97e9b59d devid 1 transid 8 /dev/loop0 scanned by syz-executor.0 (4811) [ 52.806873][ T4811] BTRFS info (device loop0): using sha256 (sha256-ce) checksum algorithm [ 52.808330][ T4811] BTRFS info (device loop0): enabling auto defrag [ 52.809291][ T4811] BTRFS info (device loop0): enabling disk space caching [ 52.810854][ T4811] BTRFS info (device loop0): disabling tree log [ 52.811848][ T4811] BTRFS info (device loop0): force clearing of disk cache [ 52.812980][ T4811] BTRFS info (device loop0): force zlib compression, level 3 [ 52.814177][ T4811] BTRFS info (device loop0): disabling disk space caching [ 52.815334][ T4811] BTRFS info (device loop0): has skinny extents [ 52.825264][ T4811] BTRFS info (device loop0): enabling ssd optimizations [ 52.826905][ T4811] BTRFS info (device loop0): clearing free space tree [ 52.828107][ T4811] BTRFS info (device loop0): clearing compat-ro feature flag for FREE_SPACE_TREE (0x1) [ 52.829762][ T4811] BTRFS info (device loop0): clearing compat-ro feature flag for FREE_SPACE_TREE_VALID (0x2) [ 52.835796][ T4811] FAULT_INJECTION: forcing a failure. [ 52.835796][ T4811] name failslab, interval 1, probability 0, space 0, times 0 [ 52.838024][ T4811] CPU: 1 PID: 4811 Comm: syz-executor.0 Tainted: G W syzkaller #0 [ 52.839405][ T4811] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/18/2026 [ 52.841104][ T4811] Call trace: [ 52.841644][ T4811] dump_backtrace+0x0/0x458 [ 52.842362][ T4811] show_stack+0x2c/0x3c [ 52.843015][ T4811] __dump_stack+0x30/0x40 [ 52.843772][ T4811] dump_stack_lvl+0xf4/0x15c [ 52.844517][ T4811] dump_stack+0x1c/0x5c [ 52.845171][ T4811] should_fail+0x3bc/0x514 [ 52.845856][ T4811] __should_failslab+0xbc/0x10c [ 52.846629][ T4811] should_failslab+0x10/0x28 [ 52.847358][ T4811] slab_pre_alloc_hook+0x64/0xe8 [ 52.848193][ T4811] kmem_cache_alloc+0x94/0x3d4 [ 52.849003][ T4811] start_transaction+0x4d0/0x13ec [ 52.849851][ T4811] btrfs_attach_transaction_barrier+0x30/0xac [ 52.850854][ T4811] btrfs_sync_fs+0x13c/0xb24 [ 52.851638][ T4811] sync_filesystem+0x1a0/0x218 [ 52.852379][ T4811] btrfs_remount+0x198/0x12b0 [ 52.853125][ T4811] legacy_reconfigure+0xf8/0x110 [ 52.853877][ T4811] reconfigure_super+0x1d4/0x6f4 [ 52.854665][ T4811] path_mount+0xc88/0x1008 [ 52.855420][ T4811] __arm64_sys_mount+0x514/0x5f0 [ 52.856241][ T4811] invoke_syscall+0x98/0x2b0 [ 52.856990][ T4811] el0_svc_common+0x138/0x258 [ 52.857775][ T4811] do_el0_svc+0x58/0x13c [ 52.858510][ T4811] el0_svc+0x78/0x1d0 [ 52.859176][ T4811] el0t_64_sync_handler+0xcc/0xe4 [ 52.860060][ T4811] el0t_64_sync+0x1a0/0x1a4 [ 53.049495][ T4832] loop0: detected capacity change from 0 to 32768 [ 53.052208][ T4832] BTRFS: device fsid ed167579-eb65-4e76-9a50-61ac97e9b59d devid 1 transid 8 /dev/loop0 scanned by syz-executor.0 (4832) [ 53.055257][ T4832] BTRFS info (device loop0): using sha256 (sha256-ce) checksum algorithm [ 53.056708][ T4832] BTRFS info (device loop0): enabling auto defrag [ 53.057760][ T4832] BTRFS info (device loop0): enabling disk space caching [ 53.074574][ T4832] FAULT_INJECTION: forcing a failure. [ 53.074574][ T4832] name failslab, interval 1, probability 0, space 0, times 0 [ 53.076636][ T4832] CPU: 1 PID: 4832 Comm: syz-executor.0 Tainted: G W syzkaller #0 [ 53.078096][ T4832] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/18/2026 [ 53.079766][ T4832] Call trace: [ 53.080312][ T4832] dump_backtrace+0x0/0x458 [ 53.081059][ T4832] show_stack+0x2c/0x3c [ 53.081788][ T4832] __dump_stack+0x30/0x40 [ 53.082552][ T4832] dump_stack_lvl+0xf4/0x15c [ 53.083319][ T4832] dump_stack+0x1c/0x5c [ 53.083978][ T4832] should_fail+0x3bc/0x514 [ 53.084715][ T4832] __should_failslab+0xbc/0x10c [ 53.085474][ T4832] should_failslab+0x10/0x28 [ 53.086251][ T4832] slab_pre_alloc_hook+0x64/0xe8 [ 53.087010][ T4832] kmem_cache_alloc_trace+0x98/0x3ec [ 53.087819][ T4832] bdi_split_work_to_wbs+0x3f4/0x77c [ 53.088664][ T4832] sync_inodes_sb+0x188/0x844 [ 53.089359][ T4832] sync_filesystem+0x160/0x218 [ 53.090090][ T4832] btrfs_remount+0x198/0x12b0 [ 53.090847][ T4832] legacy_reconfigure+0xf8/0x110 [ 53.091615][ T4832] reconfigure_super+0x1d4/0x6f4 [ 53.092432][ T4832] path_mount+0xc88/0x1008 [ 53.093133][ T4832] __arm64_sys_mount+0x514/0x5f0 [ 53.093941][ T4832] invoke_syscall+0x98/0x2b0 [ 53.094671][ T4832] el0_svc_common+0x138/0x258 [ 53.095413][ T4832] do_el0_svc+0x58/0x13c [ 53.096107][ T4832] el0_svc+0x78/0x1d0 [ 53.096769][ T4832] el0t_64_sync_handler+0xcc/0xe4 [ 53.097587][ T4832] el0t_64_sync+0x1a0/0x1a4 [ 53.268319][ T4853] loop0: detected capacity change from 0 to 32768 [ 53.271042][ T4853] BTRFS: device fsid ed167579-eb65-4e76-9a50-61ac97e9b59d devid 1 transid 8 /dev/loop0 scanned by syz-executor.0 (4853) [ 53.301398][ T4853] FAULT_INJECTION: forcing a failure. [ 53.301398][ T4853] name failslab, interval 1, probability 0, space 0, times 0 [ 53.303646][ T4853] CPU: 1 PID: 4853 Comm: syz-executor.0 Tainted: G W syzkaller #0 [ 53.305198][ T4853] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/18/2026 [ 53.306764][ T4853] Call trace: [ 53.307282][ T4853] dump_backtrace+0x0/0x458 [ 53.308007][ T4853] show_stack+0x2c/0x3c [ 53.308644][ T4853] __dump_stack+0x30/0x40 [ 53.309349][ T4853] dump_stack_lvl+0xf4/0x15c [ 53.310039][ T4853] dump_stack+0x1c/0x5c [ 53.310708][ T4853] should_fail+0x3bc/0x514 [ 53.311412][ T4853] __should_failslab+0xbc/0x10c [ 53.312188][ T4853] should_failslab+0x10/0x28 [ 53.312920][ T4853] slab_pre_alloc_hook+0x64/0xe8 [ 53.313720][ T4853] kmem_cache_alloc+0x94/0x3d4 [ 53.314415][ T4853] btrfs_alloc_path+0x5c/0x68 [ 53.315129][ T4853] __btrfs_free_extent+0x1a8/0x1abc [ 53.315883][ T4853] __btrfs_run_delayed_refs+0xbf0/0x348c [ 53.316734][ T4853] btrfs_run_delayed_refs+0x124/0x458 [ 53.317555][ T4853] btrfs_commit_transaction+0x1e0/0x3078 [ 53.318534][ T4853] btrfs_sync_fs+0x628/0xb24 [ 53.319279][ T4853] sync_filesystem+0x1a0/0x218 [ 53.320071][ T4853] btrfs_remount+0x198/0x12b0 [ 53.320893][ T4853] legacy_reconfigure+0xf8/0x110 [ 53.321693][ T4853] reconfigure_super+0x1d4/0x6f4 [ 53.322516][ T4853] path_mount+0xc88/0x1008 [ 53.323260][ T4853] __arm64_sys_mount+0x514/0x5f0 [ 53.324178][ T4853] invoke_syscall+0x98/0x2b0 [ 53.324938][ T4853] el0_svc_common+0x138/0x258 [ 53.325725][ T4853] do_el0_svc+0x58/0x13c [ 53.326422][ T4853] el0_svc+0x78/0x1d0 [ 53.327037][ T4853] el0t_64_sync_handler+0xcc/0xe4 [ 53.327839][ T4853] el0t_64_sync+0x1a0/0x1a4 [ 53.328741][ T4853] BTRFS error (device loop0): failed to run delayed ref for logical 5255168 num_bytes 4096 type 176 action 2 ref_mod 1: -12 [ 53.331610][ T4853] ------------[ cut here ]------------ [ 53.332597][ T4853] WARNING: CPU: 1 PID: 4853 at fs/btrfs/extent-tree.c:2173 btrfs_run_delayed_refs+0x3e4/0x458 [ 53.334251][ T4853] Modules linked in: [ 53.334888][ T4853] CPU: 1 PID: 4853 Comm: syz-executor.0 Tainted: G W syzkaller #0 [ 53.336367][ T4853] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/18/2026 [ 53.337992][ T4853] pstate: 62400005 (nZCv daif +PAN -UAO +TCO -DIT -SSBS BTYPE=--) [ 53.339248][ T4853] pc : btrfs_run_delayed_refs+0x3e4/0x458 [ 53.340121][ T4853] lr : btrfs_run_delayed_refs+0x3e4/0x458 [ 53.341031][ T4853] sp : ffff80001fb97530 [ 53.341730][ T4853] x29: ffff80001fb97540 x28: ffff0000d9d75000 x27: dfff800000000000 [ 53.342917][ T4853] x26: ffff0000d9d75024 x25: ffff0000d6ad8000 x24: 1fffe0001bcc8197 [ 53.344085][ T4853] x23: 1fffe0001bcc8197 x22: ffff0000de640cb8 x21: 00000000fffffff4 [ 53.345271][ T4853] x20: 0000000000000051 x19: ffff0000de640c60 x18: 0000000000000001 [ 53.346515][ T4853] x17: 0000000000000000 x16: ffff80001125f020 x15: 00000000ffffffff [ 53.347750][ T4853] x14: 0000000000000001 x13: 1fffe000341f47ab x12: 0000000000ff0100 [ 53.348913][ T4853] x11: 0000000000000000 x10: 0000000000000000 x9 : 830a9a07cc885800 [ 53.350086][ T4853] x8 : 830a9a07cc885800 x7 : 0000000000000001 x6 : 0000000000000001 [ 53.351434][ T4853] x5 : ffff80001fb96e38 x4 : ffff80001437f3e0 x3 : ffff800008509220 [ 53.352794][ T4853] x2 : 0000000000000001 x1 : 0000000100000000 x0 : 0000000000000026 [ 53.354065][ T4853] Call trace: [ 53.354636][ T4853] btrfs_run_delayed_refs+0x3e4/0x458 [ 53.355455][ T4853] btrfs_commit_transaction+0x1e0/0x3078 [ 53.356294][ T4853] btrfs_sync_fs+0x628/0xb24 [ 53.356985][ T4853] sync_filesystem+0x1a0/0x218 [ 53.357705][ T4853] btrfs_remount+0x198/0x12b0 [ 53.358420][ T4853] legacy_reconfigure+0xf8/0x110 [ 53.359193][ T4853] reconfigure_super+0x1d4/0x6f4 [ 53.360024][ T4853] path_mount+0xc88/0x1008 [ 53.360764][ T4853] __arm64_sys_mount+0x514/0x5f0 [ 53.361560][ T4853] invoke_syscall+0x98/0x2b0 [ 53.362281][ T4853] el0_svc_common+0x138/0x258 [ 53.363017][ T4853] do_el0_svc+0x58/0x13c [ 53.363710][ T4853] el0_svc+0x78/0x1d0 [ 53.364367][ T4853] el0t_64_sync_handler+0xcc/0xe4 [ 53.365177][ T4853] el0t_64_sync+0x1a0/0x1a4 [ 53.365889][ T4853] irq event stamp: 78824 [ 53.366553][ T4853] hardirqs last enabled at (78823): [] __up_console_sem+0xb4/0xfc [ 53.368164][ T4853] hardirqs last disabled at (78824): [] el1_dbg+0x24/0x80 [ 53.369622][ T4853] softirqs last enabled at (78802): [] handle_softirqs+0xa40/0xbe4 [ 53.371193][ T4853] softirqs last disabled at (78767): [] __irq_exit_rcu+0x240/0x43c [ 53.372710][ T4853] ---[ end trace 7b9430bdaa3c86c2 ]--- [ 53.374715][ T4853] BTRFS: error (device loop0) in btrfs_run_delayed_refs:2173: errno=-12 Out of memory [ 53.377113][ T4853] BTRFS error (device loop0): Remounting read-write after error is not allowed [ 53.451231][ T4578] Bluetooth: hci0: command 0x041b tx timeout [ 53.552838][ T4874] BTRFS: device fsid ed167579-eb65-4e76-9a50-61ac97e9b59d devid 1 transid 8 /dev/loop0 scanned by syz-executor.0 (4874) [ 53.582608][ T4874] FAULT_INJECTION: forcing a failure. [ 53.582608][ T4874] name failslab, interval 1, probability 0, space 0, times 0 [ 53.584843][ T4874] CPU: 1 PID: 4874 Comm: syz-executor.0 Tainted: G W syzkaller #0 [ 53.586312][ T4874] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/18/2026 [ 53.587978][ T4874] Call trace: [ 53.588562][ T4874] dump_backtrace+0x0/0x458 [ 53.589324][ T4874] show_stack+0x2c/0x3c [ 53.589986][ T4874] __dump_stack+0x30/0x40 [ 53.590733][ T4874] dump_stack_lvl+0xf4/0x15c [ 53.591500][ T4874] dump_stack+0x1c/0x5c [ 53.592198][ T4874] should_fail+0x3bc/0x514 [ 53.592867][ T4874] __should_failslab+0xbc/0x10c [ 53.593644][ T4874] should_failslab+0x10/0x28 [ 53.594422][ T4874] slab_pre_alloc_hook+0x64/0xe8 [ 53.595267][ T4874] kmem_cache_alloc+0x94/0x3d4 [ 53.596035][ T4874] btrfs_alloc_path+0x5c/0x68 [ 53.596802][ T4874] __btrfs_run_delayed_refs+0xe70/0x348c [ 53.597715][ T4874] btrfs_run_delayed_refs+0x124/0x458 [ 53.598595][ T4874] btrfs_commit_transaction+0x1e0/0x3078 [ 53.599495][ T4874] btrfs_sync_fs+0x628/0xb24 [ 53.600259][ T4874] sync_filesystem+0x1a0/0x218 [ 53.601068][ T4874] btrfs_remount+0x198/0x12b0 [ 53.601854][ T4874] legacy_reconfigure+0xf8/0x110 [ 53.602700][ T4874] reconfigure_super+0x1d4/0x6f4 [ 53.603567][ T4874] path_mount+0xc88/0x1008 [ 53.604302][ T4874] __arm64_sys_mount+0x514/0x5f0 [ 53.605130][ T4874] invoke_syscall+0x98/0x2b0 [ 53.605929][ T4874] el0_svc_common+0x138/0x258 [ 53.606736][ T4874] do_el0_svc+0x58/0x13c [ 53.607416][ T4874] el0_svc+0x78/0x1d0 [ 53.608112][ T4874] el0t_64_sync_handler+0xcc/0xe4 [ 53.608911][ T4874] el0t_64_sync+0x1a0/0x1a4 [ 53.611179][ T4874] BTRFS error (device loop0): failed to run delayed ref for logical 5246976 num_bytes 4096 type 176 action 1 ref_mod 1: -12 [ 53.613347][ T4874] ------------[ cut here ]------------ [ 53.614258][ T4874] WARNING: CPU: 0 PID: 4874 at fs/btrfs/extent-tree.c:2173 btrfs_run_delayed_refs+0x3e4/0x458 [ 53.615700][ T4874] Modules linked in: [ 53.616264][ T4874] CPU: 0 PID: 4874 Comm: syz-executor.0 Tainted: G W syzkaller #0 [ 53.617590][ T4874] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/18/2026 [ 53.619103][ T4874] pstate: 62400005 (nZCv daif +PAN -UAO +TCO -DIT -SSBS BTYPE=--) [ 53.620321][ T4874] pc : btrfs_run_delayed_refs+0x3e4/0x458 [ 53.621230][ T4874] lr : btrfs_run_delayed_refs+0x3e4/0x458 [ 53.622214][ T4874] sp : ffff800020247530 [ 53.622924][ T4874] x29: ffff800020247540 x28: ffff0000ca9e9000 x27: dfff800000000000 [ 53.624274][ T4874] x26: ffff0000ca9e9024 x25: ffff0000d99a0000 x24: 1fffe0001bcc81d9 [ 53.625633][ T4874] x23: 1fffe0001bcc81d9 x22: ffff0000de640ec8 x21: 00000000fffffff4 [ 53.627077][ T4874] x20: 0000000000000051 x19: ffff0000de640e70 x18: 0000000000000001 [ 53.628455][ T4874] x17: 0000000000000000 x16: ffff80001125f020 x15: 00000000ffffffff [ 53.629823][ T4874] x14: 0000000000000001 x13: 1fffe000341f05ab x12: 0000000000ff0100 [ 53.631210][ T4874] x11: 0000000000000000 x10: 0000000000000000 x9 : ba0c8e980db85d00 [ 53.632573][ T4874] x8 : ba0c8e980db85d00 x7 : 0000000000000001 x6 : 0000000000000001 [ 53.633939][ T4874] x5 : ffff800020246e38 x4 : ffff80001437f3e0 x3 : ffff800008509220 [ 53.635266][ T4874] x2 : 0000000000000001 x1 : 0000000100000000 x0 : 0000000000000026 [ 53.636596][ T4874] Call trace: [ 53.637119][ T4874] btrfs_run_delayed_refs+0x3e4/0x458 [ 53.638042][ T4874] btrfs_commit_transaction+0x1e0/0x3078 [ 53.638954][ T4874] btrfs_sync_fs+0x628/0xb24 [ 53.639720][ T4874] sync_filesystem+0x1a0/0x218 [ 53.640483][ T4874] btrfs_remount+0x198/0x12b0 [ 53.641292][ T4874] legacy_reconfigure+0xf8/0x110 [ 53.642084][ T4874] reconfigure_super+0x1d4/0x6f4 [ 53.642915][ T4874] path_mount+0xc88/0x1008 [ 53.643621][ T4874] __arm64_sys_mount+0x514/0x5f0 [ 53.644419][ T4874] invoke_syscall+0x98/0x2b0 [ 53.645215][ T4874] el0_svc_common+0x138/0x258 [ 53.646023][ T4874] do_el0_svc+0x58/0x13c [ 53.646710][ T4874] el0_svc+0x78/0x1d0 [ 53.647359][ T4874] el0t_64_sync_handler+0xcc/0xe4 [ 53.648167][ T4874] el0t_64_sync+0x1a0/0x1a4 [ 53.648884][ T4874] irq event stamp: 78960 [ 53.649605][ T4874] hardirqs last enabled at (78959): [] __up_console_sem+0xb4/0xfc [ 53.651136][ T4874] hardirqs last disabled at (78960): [] el1_dbg+0x24/0x80 [ 53.652519][ T4874] softirqs last enabled at (78924): [] handle_softirqs+0xa40/0xbe4 [ 53.654110][ T4874] softirqs last disabled at (78895): [] __irq_exit_rcu+0x240/0x43c [ 53.655709][ T4874] ---[ end trace 7b9430bdaa3c86c3 ]--- [ 53.657264][ T4874] BTRFS: error (device loop0) in btrfs_run_delayed_refs:2173: errno=-12 Out of memory [ 53.659043][ T4874] BTRFS error (device loop0): Remounting read-write after error is not allowed [ 53.844845][ T4895] BTRFS: device fsid ed167579-eb65-4e76-9a50-61ac97e9b59d devid 1 transid 8 /dev/loop0 scanned by syz-executor.0 (4895) [ 53.871972][ T4895] FAULT_INJECTION: forcing a failure. [ 53.871972][ T4895] name failslab, interval 1, probability 0, space 0, times 0 [ 53.874287][ T4895] CPU: 1 PID: 4895 Comm: syz-executor.0 Tainted: G W syzkaller #0 [ 53.875632][ T4895] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/18/2026 [ 53.877301][ T4895] Call trace: [ 53.877819][ T4895] dump_backtrace+0x0/0x458 [ 53.878589][ T4895] show_stack+0x2c/0x3c [ 53.879319][ T4895] __dump_stack+0x30/0x40 [ 53.880050][ T4895] dump_stack_lvl+0xf4/0x15c [ 53.880846][ T4895] dump_stack+0x1c/0x5c [ 53.881536][ T4895] should_fail+0x3bc/0x514 [ 53.882246][ T4895] __should_failslab+0xbc/0x10c [ 53.883025][ T4895] should_failslab+0x10/0x28 [ 53.883780][ T4895] slab_pre_alloc_hook+0x64/0xe8 [ 53.884581][ T4895] kmem_cache_alloc+0x94/0x3d4 [ 53.885361][ T4895] start_transaction+0x4d0/0x13ec [ 53.886178][ T4895] btrfs_attach_transaction_barrier+0x30/0xac [ 53.887143][ T4895] btrfs_sync_fs+0x13c/0xb24 [ 53.887876][ T4895] sync_filesystem+0x1a0/0x218 [ 53.888652][ T4895] btrfs_remount+0x198/0x12b0 [ 53.889375][ T4895] legacy_reconfigure+0xf8/0x110 [ 53.890141][ T4895] reconfigure_super+0x1d4/0x6f4 [ 53.890909][ T4895] path_mount+0xc88/0x1008 [ 53.891588][ T4895] __arm64_sys_mount+0x514/0x5f0 [ 53.892396][ T4895] invoke_syscall+0x98/0x2b0 [ 53.893196][ T4895] el0_svc_common+0x138/0x258 [ 53.893951][ T4895] do_el0_svc+0x58/0x13c [ 53.894612][ T4895] el0_svc+0x78/0x1d0 [ 53.895258][ T4895] el0t_64_sync_handler+0xcc/0xe4 [ 53.896094][ T4895] el0t_64_sync+0x1a0/0x1a4 [ 54.081204][ T4916] BTRFS: device fsid ed167579-eb65-4e76-9a50-61ac97e9b59d devid 1 transid 8 /dev/loop0 scanned by syz-executor.0 (4916) [ 54.096519][ T4916] FAULT_INJECTION: forcing a failure. [ 54.096519][ T4916] name failslab, interval 1, probability 0, space 0, times 0 [ 54.098811][ T4916] CPU: 1 PID: 4916 Comm: syz-executor.0 Tainted: G W syzkaller #0 [ 54.100333][ T4916] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/18/2026 [ 54.101911][ T4916] Call trace: [ 54.102441][ T4916] dump_backtrace+0x0/0x458 [ 54.103152][ T4916] show_stack+0x2c/0x3c [ 54.103814][ T4916] __dump_stack+0x30/0x40 [ 54.104509][ T4916] dump_stack_lvl+0xf4/0x15c [ 54.105218][ T4916] dump_stack+0x1c/0x5c [ 54.105883][ T4916] should_fail+0x3bc/0x514 [ 54.106622][ T4916] __should_failslab+0xbc/0x10c [ 54.107420][ T4916] should_failslab+0x10/0x28 [ 54.108163][ T4916] slab_pre_alloc_hook+0x64/0xe8 [ 54.109031][ T4916] kmem_cache_alloc_trace+0x98/0x3ec [ 54.109903][ T4916] bdi_split_work_to_wbs+0x3f4/0x77c [ 54.110780][ T4916] __writeback_inodes_sb_nr+0x1ac/0x224 [ 54.111758][ T4916] writeback_inodes_sb+0x78/0x8c [ 54.112598][ T4916] sync_filesystem+0xa0/0x218 [ 54.113332][ T4916] btrfs_remount+0x198/0x12b0 [ 54.114110][ T4916] legacy_reconfigure+0xf8/0x110 [ 54.114988][ T4916] reconfigure_super+0x1d4/0x6f4 [ 54.115781][ T4916] path_mount+0xc88/0x1008 [ 54.116477][ T4916] __arm64_sys_mount+0x514/0x5f0 [ 54.117271][ T4916] invoke_syscall+0x98/0x2b0 [ 54.118010][ T4916] el0_svc_common+0x138/0x258 [ 54.118786][ T4916] do_el0_svc+0x58/0x13c [ 54.119489][ T4916] el0_svc+0x78/0x1d0 [ 54.120137][ T4916] el0t_64_sync_handler+0xcc/0xe4 [ 54.121002][ T4916] el0t_64_sync+0x1a0/0x1a4 [ 54.290918][ T4937] BTRFS: device fsid ed167579-eb65-4e76-9a50-61ac97e9b59d devid 1 transid 8 /dev/loop0 scanned by syz-executor.0 (4937) [ 54.314191][ T4937] FAULT_INJECTION: forcing a failure. [ 54.314191][ T4937] name failslab, interval 1, probability 0, space 0, times 0 [ 54.316220][ T4937] CPU: 0 PID: 4937 Comm: syz-executor.0 Tainted: G W syzkaller #0 [ 54.317714][ T4937] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/18/2026 [ 54.319233][ T4937] Call trace: [ 54.319738][ T4937] dump_backtrace+0x0/0x458 [ 54.320477][ T4937] show_stack+0x2c/0x3c [ 54.321171][ T4937] __dump_stack+0x30/0x40 [ 54.321844][ T4937] dump_stack_lvl+0xf4/0x15c [ 54.322617][ T4937] dump_stack+0x1c/0x5c [ 54.323284][ T4937] should_fail+0x3bc/0x514 [ 54.323987][ T4937] __should_failslab+0xbc/0x10c [ 54.324805][ T4937] should_failslab+0x10/0x28 [ 54.325544][ T4937] slab_pre_alloc_hook+0x64/0xe8 [ 54.326299][ T4937] kmem_cache_alloc_trace+0x98/0x3ec [ 54.327151][ T4937] bdi_split_work_to_wbs+0x3f4/0x77c [ 54.328012][ T4937] __writeback_inodes_sb_nr+0x1ac/0x224 [ 54.328908][ T4937] writeback_inodes_sb+0x78/0x8c [ 54.329721][ T4937] sync_filesystem+0xa0/0x218 [ 54.330509][ T4937] btrfs_remount+0x198/0x12b0 [ 54.331337][ T4937] legacy_reconfigure+0xf8/0x110 [ 54.332215][ T4937] reconfigure_super+0x1d4/0x6f4 [ 54.333039][ T4937] path_mount+0xc88/0x1008 [ 54.333808][ T4937] __arm64_sys_mount+0x514/0x5f0 [ 54.334684][ T4937] invoke_syscall+0x98/0x2b0 [ 54.335480][ T4937] el0_svc_common+0x138/0x258 [ 54.336231][ T4937] do_el0_svc+0x58/0x13c [ 54.336921][ T4937] el0_svc+0x78/0x1d0 [ 54.337555][ T4937] el0t_64_sync_handler+0xcc/0xe4 [ 54.338390][ T4937] el0t_64_sync+0x1a0/0x1a4 1970/01/01 00:00:54 executed programs: 14 [ 54.515411][ T4958] BTRFS: device fsid ed167579-eb65-4e76-9a50-61ac97e9b59d devid 1 transid 8 /dev/loop0 scanned by syz-executor.0 (4958) [ 54.534685][ T4958] FAULT_INJECTION: forcing a failure. [ 54.534685][ T4958] name failslab, interval 1, probability 0, space 0, times 0 [ 54.536935][ T4958] CPU: 0 PID: 4958 Comm: syz-executor.0 Tainted: G W syzkaller #0 [ 54.538284][ T4958] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/18/2026 [ 54.539900][ T4958] Call trace: [ 54.540439][ T4958] dump_backtrace+0x0/0x458 [ 54.541187][ T4958] show_stack+0x2c/0x3c [ 54.541856][ T4958] __dump_stack+0x30/0x40 [ 54.542558][ T4958] dump_stack_lvl+0xf4/0x15c [ 54.543397][ T4958] dump_stack+0x1c/0x5c [ 54.544080][ T4958] should_fail+0x3bc/0x514 [ 54.544814][ T4958] __should_failslab+0xbc/0x10c [ 54.545633][ T4958] should_failslab+0x10/0x28 [ 54.546359][ T4958] slab_pre_alloc_hook+0x64/0xe8 [ 54.547151][ T4958] kmem_cache_alloc+0x94/0x3d4 [ 54.547945][ T4958] start_transaction+0x4d0/0x13ec [ 54.548797][ T4958] btrfs_attach_transaction_barrier+0x30/0xac [ 54.549790][ T4958] btrfs_sync_fs+0x13c/0xb24 [ 54.550603][ T4958] sync_filesystem+0x1a0/0x218 [ 54.551340][ T4958] btrfs_remount+0x198/0x12b0 [ 54.552085][ T4958] legacy_reconfigure+0xf8/0x110 [ 54.552884][ T4958] reconfigure_super+0x1d4/0x6f4 [ 54.553648][ T4958] path_mount+0xc88/0x1008 [ 54.554376][ T4958] __arm64_sys_mount+0x514/0x5f0 [ 54.555182][ T4958] invoke_syscall+0x98/0x2b0 [ 54.555998][ T4958] el0_svc_common+0x138/0x258 [ 54.556770][ T4958] do_el0_svc+0x58/0x13c [ 54.557471][ T4958] el0_svc+0x78/0x1d0 [ 54.558122][ T4958] el0t_64_sync_handler+0xcc/0xe4 [ 54.558916][ T4958] el0t_64_sync+0x1a0/0x1a4 [ 54.755988][ T4979] BTRFS: device fsid ed167579-eb65-4e76-9a50-61ac97e9b59d devid 1 transid 8 /dev/loop0 scanned by syz-executor.0 (4979) [ 54.782381][ T4979] FAULT_INJECTION: forcing a failure. [ 54.782381][ T4979] name failslab, interval 1, probability 0, space 0, times 0 [ 54.784531][ T4979] CPU: 1 PID: 4979 Comm: syz-executor.0 Tainted: G W syzkaller #0 [ 54.786048][ T4979] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/18/2026 [ 54.787702][ T4979] Call trace: [ 54.788236][ T4979] dump_backtrace+0x0/0x458 [ 54.788983][ T4979] show_stack+0x2c/0x3c [ 54.789608][ T4979] __dump_stack+0x30/0x40 [ 54.790334][ T4979] dump_stack_lvl+0xf4/0x15c [ 54.791133][ T4979] dump_stack+0x1c/0x5c [ 54.791789][ T4979] should_fail+0x3bc/0x514 [ 54.792519][ T4979] __should_failslab+0xbc/0x10c [ 54.793286][ T4979] should_failslab+0x10/0x28 [ 54.794080][ T4979] slab_pre_alloc_hook+0x64/0xe8 [ 54.794909][ T4979] kmem_cache_alloc+0x94/0x3d4 [ 54.795697][ T4979] btrfs_alloc_path+0x5c/0x68 [ 54.796485][ T4979] __btrfs_run_delayed_refs+0xe70/0x348c [ 54.797434][ T4979] btrfs_run_delayed_refs+0x124/0x458 [ 54.798320][ T4979] btrfs_commit_transaction+0x1e0/0x3078 [ 54.799264][ T4979] btrfs_sync_fs+0x628/0xb24 [ 54.799982][ T4979] sync_filesystem+0x1a0/0x218 [ 54.800768][ T4979] btrfs_remount+0x198/0x12b0 [ 54.801537][ T4979] legacy_reconfigure+0xf8/0x110 [ 54.802327][ T4979] reconfigure_super+0x1d4/0x6f4 [ 54.803110][ T4979] path_mount+0xc88/0x1008 [ 54.803817][ T4979] __arm64_sys_mount+0x514/0x5f0 [ 54.804588][ T4979] invoke_syscall+0x98/0x2b0 [ 54.805323][ T4979] el0_svc_common+0x138/0x258 [ 54.806083][ T4979] do_el0_svc+0x58/0x13c [ 54.806712][ T4979] el0_svc+0x78/0x1d0 [ 54.807291][ T4979] el0t_64_sync_handler+0xcc/0xe4 [ 54.808146][ T4979] el0t_64_sync+0x1a0/0x1a4 [ 54.810436][ T4979] BTRFS error (device loop0): failed to run delayed ref for logical 5246976 num_bytes 4096 type 176 action 1 ref_mod 1: -12 [ 54.813084][ T4979] ------------[ cut here ]------------ [ 54.813990][ T4979] WARNING: CPU: 1 PID: 4979 at fs/btrfs/extent-tree.c:2173 btrfs_run_delayed_refs+0x3e4/0x458 [ 54.815547][ T4979] Modules linked in: [ 54.816129][ T4979] CPU: 1 PID: 4979 Comm: syz-executor.0 Tainted: G W syzkaller #0 [ 54.817572][ T4979] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/18/2026 [ 54.819218][ T4979] pstate: 62400005 (nZCv daif +PAN -UAO +TCO -DIT -SSBS BTYPE=--) [ 54.820485][ T4979] pc : btrfs_run_delayed_refs+0x3e4/0x458 [ 54.821445][ T4979] lr : btrfs_run_delayed_refs+0x3e4/0x458 [ 54.822428][ T4979] sp : ffff8000204f7530 [ 54.823068][ T4979] x29: ffff8000204f7540 x28: ffff0000db3e0000 x27: dfff800000000000 [ 54.824448][ T4979] x26: ffff0000db3e0024 x25: ffff0000d2fa8000 x24: 1fffe0001bcc0afd [ 54.825833][ T4979] x23: 1fffe0001bcc0afd x22: ffff0000de6057e8 x21: 00000000fffffff4 [ 54.827212][ T4979] x20: 0000000000000051 x19: ffff0000de605790 x18: 0000000000000001 [ 54.828540][ T4979] x17: 0000000000000000 x16: ffff80001125f020 x15: 00000000ffffffff [ 54.829784][ T4979] x14: 0000000000000001 x13: 1fffe000341f47ab x12: 0000000000ff0100 [ 54.831129][ T4979] x11: 0000000000000000 x10: 0000000000000000 x9 : 12d4e35a09e03700 [ 54.832494][ T4979] x8 : 12d4e35a09e03700 x7 : 0000000000000001 x6 : 0000000000000001 [ 54.833870][ T4979] x5 : ffff8000204f6e38 x4 : ffff80001437f3e0 x3 : ffff800008509220 [ 54.835144][ T4979] x2 : 0000000000000001 x1 : 0000000100000000 x0 : 0000000000000026 [ 54.836463][ T4979] Call trace: [ 54.837011][ T4979] btrfs_run_delayed_refs+0x3e4/0x458 [ 54.837866][ T4979] btrfs_commit_transaction+0x1e0/0x3078 [ 54.838770][ T4979] btrfs_sync_fs+0x628/0xb24 [ 54.839536][ T4979] sync_filesystem+0x1a0/0x218 [ 54.840339][ T4979] btrfs_remount+0x198/0x12b0 [ 54.841098][ T4979] legacy_reconfigure+0xf8/0x110 [ 54.841929][ T4979] reconfigure_super+0x1d4/0x6f4 [ 54.842770][ T4979] path_mount+0xc88/0x1008 [ 54.843521][ T4979] __arm64_sys_mount+0x514/0x5f0 [ 54.844371][ T4979] invoke_syscall+0x98/0x2b0 [ 54.845154][ T4979] el0_svc_common+0x138/0x258 [ 54.845891][ T4979] do_el0_svc+0x58/0x13c [ 54.846547][ T4979] el0_svc+0x78/0x1d0 [ 54.847183][ T4979] el0t_64_sync_handler+0xcc/0xe4 [ 54.847984][ T4979] el0t_64_sync+0x1a0/0x1a4 [ 54.848728][ T4979] irq event stamp: 79690 [ 54.849388][ T4979] hardirqs last enabled at (79689): [] __up_console_sem+0xb4/0xfc [ 54.850868][ T4979] hardirqs last disabled at (79690): [] el1_dbg+0x24/0x80 [ 54.852239][ T4979] softirqs last enabled at (79660): [] handle_softirqs+0xa40/0xbe4 [ 54.853837][ T4979] softirqs last disabled at (79599): [] __irq_exit_rcu+0x240/0x43c [ 54.855364][ T4979] ---[ end trace 7b9430bdaa3c86c4 ]--- [ 54.857265][ T4979] BTRFS: error (device loop0) in btrfs_run_delayed_refs:2173: errno=-12 Out of memory [ 54.858951][ T4979] BTRFS error (device loop0): Remounting read-write after error is not allowed [ 55.052970][ T5000] BTRFS: device fsid ed167579-eb65-4e76-9a50-61ac97e9b59d devid 1 transid 8 /dev/loop0 scanned by syz-executor.0 (5000) [ 55.069597][ T5000] FAULT_INJECTION: forcing a failure. [ 55.069597][ T5000] name failslab, interval 1, probability 0, space 0, times 0 [ 55.071884][ T5000] CPU: 1 PID: 5000 Comm: syz-executor.0 Tainted: G W syzkaller #0 [ 55.073370][ T5000] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/18/2026 [ 55.075069][ T5000] Call trace: [ 55.075591][ T5000] dump_backtrace+0x0/0x458 [ 55.076308][ T5000] show_stack+0x2c/0x3c [ 55.076926][ T5000] __dump_stack+0x30/0x40 [ 55.077597][ T5000] dump_stack_lvl+0xf4/0x15c [ 55.078321][ T5000] dump_stack+0x1c/0x5c [ 55.079006][ T5000] should_fail+0x3bc/0x514 [ 55.079688][ T5000] __should_failslab+0xbc/0x10c [ 55.080455][ T5000] should_failslab+0x10/0x28 [ 55.081251][ T5000] slab_pre_alloc_hook+0x64/0xe8 [ 55.082046][ T5000] kmem_cache_alloc+0x94/0x3d4 [ 55.082850][ T5000] start_transaction+0x4d0/0x13ec [ 55.083702][ T5000] btrfs_attach_transaction_barrier+0x30/0xac [ 55.084640][ T5000] btrfs_sync_fs+0x13c/0xb24 [ 55.085336][ T5000] sync_filesystem+0x1a0/0x218 [ 55.086127][ T5000] btrfs_remount+0x198/0x12b0 [ 55.086856][ T5000] legacy_reconfigure+0xf8/0x110 [ 55.087622][ T5000] reconfigure_super+0x1d4/0x6f4 [ 55.088410][ T5000] path_mount+0xc88/0x1008 [ 55.089100][ T5000] __arm64_sys_mount+0x514/0x5f0 [ 55.089898][ T5000] invoke_syscall+0x98/0x2b0 [ 55.090620][ T5000] el0_svc_common+0x138/0x258 [ 55.091390][ T5000] do_el0_svc+0x58/0x13c [ 55.092084][ T5000] el0_svc+0x78/0x1d0 [ 55.092770][ T5000] el0t_64_sync_handler+0xcc/0xe4 [ 55.093655][ T5000] el0t_64_sync+0x1a0/0x1a4 [ 55.279732][ T5021] BTRFS: device fsid ed167579-eb65-4e76-9a50-61ac97e9b59d devid 1 transid 8 /dev/loop0 scanned by syz-executor.0 (5021) [ 55.298527][ T5021] FAULT_INJECTION: forcing a failure. [ 55.298527][ T5021] name failslab, interval 1, probability 0, space 0, times 0 [ 55.300936][ T5021] CPU: 0 PID: 5021 Comm: syz-executor.0 Tainted: G W syzkaller #0 [ 55.302395][ T5021] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/18/2026 [ 55.304072][ T5021] Call trace: [ 55.304621][ T5021] dump_backtrace+0x0/0x458 [ 55.305386][ T5021] show_stack+0x2c/0x3c [ 55.306057][ T5021] __dump_stack+0x30/0x40 [ 55.306790][ T5021] dump_stack_lvl+0xf4/0x15c [ 55.307575][ T5021] dump_stack+0x1c/0x5c [ 55.308310][ T5021] should_fail+0x3bc/0x514 [ 55.309034][ T5021] __should_failslab+0xbc/0x10c [ 55.309817][ T5021] should_failslab+0x10/0x28 [ 55.310522][ T5021] slab_pre_alloc_hook+0x64/0xe8 [ 55.311326][ T5021] kmem_cache_alloc+0x94/0x3d4 [ 55.312139][ T5021] btrfs_alloc_path+0x5c/0x68 [ 55.312873][ T5021] __btrfs_run_delayed_refs+0xe70/0x348c [ 55.313825][ T5021] btrfs_run_delayed_refs+0x124/0x458 [ 55.314671][ T5021] btrfs_commit_transaction+0x1e0/0x3078 [ 55.315597][ T5021] btrfs_sync_fs+0x628/0xb24 [ 55.316310][ T5021] sync_filesystem+0x1a0/0x218 [ 55.317092][ T5021] btrfs_remount+0x198/0x12b0 [ 55.317872][ T5021] legacy_reconfigure+0xf8/0x110 [ 55.318606][ T5021] reconfigure_super+0x1d4/0x6f4 [ 55.319396][ T5021] path_mount+0xc88/0x1008 [ 55.320103][ T5021] __arm64_sys_mount+0x514/0x5f0 [ 55.320870][ T5021] invoke_syscall+0x98/0x2b0 [ 55.321565][ T5021] el0_svc_common+0x138/0x258 [ 55.322323][ T5021] do_el0_svc+0x58/0x13c [ 55.322975][ T5021] el0_svc+0x78/0x1d0 [ 55.323534][ T5021] el0t_64_sync_handler+0xcc/0xe4 [ 55.324277][ T5021] el0t_64_sync+0x1a0/0x1a4 [ 55.327384][ T5021] BTRFS error (device loop0): failed to run delayed ref for logical 5246976 num_bytes 4096 type 176 action 1 ref_mod 1: -12 [ 55.329573][ T5021] ------------[ cut here ]------------ [ 55.331097][ T5021] WARNING: CPU: 0 PID: 5021 at fs/btrfs/extent-tree.c:2173 btrfs_run_delayed_refs+0x3e4/0x458 [ 55.332771][ T5021] Modules linked in: [ 55.333387][ T5021] CPU: 0 PID: 5021 Comm: syz-executor.0 Tainted: G W syzkaller #0 [ 55.334940][ T5021] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/18/2026 [ 55.336838][ T5021] pstate: 62400005 (nZCv daif +PAN -UAO +TCO -DIT -SSBS BTYPE=--) [ 55.338186][ T5021] pc : btrfs_run_delayed_refs+0x3e4/0x458 [ 55.339156][ T5021] lr : btrfs_run_delayed_refs+0x3e4/0x458 [ 55.340041][ T5021] sp : ffff800020967530 [ 55.340760][ T5021] x29: ffff800020967540 x28: ffff0000c2629000 x27: dfff800000000000 [ 55.342164][ T5021] x26: ffff0000c2629024 x25: ffff0000d54d0000 x24: 1fffe0001bcc04bb [ 55.343550][ T5021] x23: 1fffe0001bcc04bb x22: ffff0000de6025d8 x21: 00000000fffffff4 [ 55.344818][ T5021] x20: 0000000000000051 x19: ffff0000de602580 x18: 0000000000000001 [ 55.346103][ T5021] x17: 0000000000000000 x16: ffff80001125f020 x15: 00000000ffffffff [ 55.347505][ T5021] x14: 0000000000000001 x13: 1fffe000341f1cd7 x12: 0000000000ff0100 [ 55.348786][ T5021] x11: 0000000000000000 x10: 0000000000000000 x9 : b95d45c8c3c0fb00 [ 55.349972][ T5021] x8 : b95d45c8c3c0fb00 x7 : 0000000000000001 x6 : 0000000000000001 [ 55.351304][ T5021] x5 : ffff800020966e38 x4 : ffff80001437f3e0 x3 : ffff80000a75f10c [ 55.352620][ T5021] x2 : ffff0001a0f82d50 x1 : 0000000100000000 x0 : 0000000000000026 [ 55.353969][ T5021] Call trace: [ 55.354472][ T5021] btrfs_run_delayed_refs+0x3e4/0x458 [ 55.355392][ T5021] btrfs_commit_transaction+0x1e0/0x3078 [ 55.356321][ T5021] btrfs_sync_fs+0x628/0xb24 [ 55.357027][ T5021] sync_filesystem+0x1a0/0x218 [ 55.357845][ T5021] btrfs_remount+0x198/0x12b0 [ 55.358653][ T5021] legacy_reconfigure+0xf8/0x110 [ 55.359459][ T5021] reconfigure_super+0x1d4/0x6f4 [ 55.360299][ T5021] path_mount+0xc88/0x1008 [ 55.361041][ T5021] __arm64_sys_mount+0x514/0x5f0 [ 55.361790][ T5021] invoke_syscall+0x98/0x2b0 [ 55.362536][ T5021] el0_svc_common+0x138/0x258 [ 55.363340][ T5021] do_el0_svc+0x58/0x13c [ 55.364096][ T5021] el0_svc+0x78/0x1d0 [ 55.364818][ T5021] el0t_64_sync_handler+0xcc/0xe4 [ 55.365668][ T5021] el0t_64_sync+0x1a0/0x1a4 [ 55.366410][ T5021] irq event stamp: 79322 [ 55.367090][ T5021] hardirqs last enabled at (79321): [] __up_console_sem+0xb4/0xfc [ 55.368645][ T5021] hardirqs last disabled at (79322): [] el1_dbg+0x24/0x80 [ 55.370087][ T5021] softirqs last enabled at (79312): [] handle_softirqs+0xa40/0xbe4 [ 55.371711][ T5021] softirqs last disabled at (79271): [] __irq_exit_rcu+0x240/0x43c [ 55.373265][ T5021] ---[ end trace 7b9430bdaa3c86c5 ]--- [ 55.377103][ T5021] BTRFS: error (device loop0) in btrfs_run_delayed_refs:2173: errno=-12 Out of memory [ 55.379014][ T5021] BTRFS error (device loop0): Remounting read-write after error is not allowed [ 55.530828][ T4503] Bluetooth: hci0: command 0x040f tx timeout [ 55.552693][ T5042] BTRFS: device fsid ed167579-eb65-4e76-9a50-61ac97e9b59d devid 1 transid 8 /dev/loop0 scanned by syz-executor.0 (5042) [ 55.575721][ T5042] FAULT_INJECTION: forcing a failure. [ 55.575721][ T5042] name failslab, interval 1, probability 0, space 0, times 0 [ 55.577995][ T5042] CPU: 0 PID: 5042 Comm: syz-executor.0 Tainted: G W syzkaller #0 [ 55.579475][ T5042] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/18/2026 [ 55.581068][ T5042] Call trace: [ 55.581544][ T5042] dump_backtrace+0x0/0x458 [ 55.582271][ T5042] show_stack+0x2c/0x3c [ 55.582982][ T5042] __dump_stack+0x30/0x40 [ 55.583696][ T5042] dump_stack_lvl+0xf4/0x15c [ 55.584525][ T5042] dump_stack+0x1c/0x5c [ 55.585162][ T5042] should_fail+0x3bc/0x514 [ 55.585903][ T5042] __should_failslab+0xbc/0x10c [ 55.586639][ T5042] should_failslab+0x10/0x28 [ 55.587397][ T5042] slab_pre_alloc_hook+0x64/0xe8 [ 55.588233][ T5042] kmem_cache_alloc+0x94/0x3d4 [ 55.589021][ T5042] btrfs_alloc_path+0x5c/0x68 [ 55.589819][ T5042] __btrfs_run_delayed_refs+0xe70/0x348c [ 55.590718][ T5042] btrfs_run_delayed_refs+0x124/0x458 [ 55.591609][ T5042] btrfs_commit_transaction+0x1e0/0x3078 [ 55.592555][ T5042] btrfs_sync_fs+0x628/0xb24 [ 55.593319][ T5042] sync_filesystem+0x1a0/0x218 [ 55.594145][ T5042] btrfs_remount+0x198/0x12b0 [ 55.594914][ T5042] legacy_reconfigure+0xf8/0x110 [ 55.595717][ T5042] reconfigure_super+0x1d4/0x6f4 [ 55.596467][ T5042] path_mount+0xc88/0x1008 [ 55.597163][ T5042] __arm64_sys_mount+0x514/0x5f0 [ 55.597952][ T5042] invoke_syscall+0x98/0x2b0 [ 55.598686][ T5042] el0_svc_common+0x138/0x258 [ 55.599428][ T5042] do_el0_svc+0x58/0x13c [ 55.600114][ T5042] el0_svc+0x78/0x1d0 [ 55.600707][ T5042] el0t_64_sync_handler+0xcc/0xe4 [ 55.601531][ T5042] el0t_64_sync+0x1a0/0x1a4 [ 55.603085][ T5042] BTRFS error (device loop0): failed to run delayed ref for logical 5246976 num_bytes 4096 type 176 action 1 ref_mod 1: -12 [ 55.605284][ T5042] ------------[ cut here ]------------ [ 55.606178][ T5042] WARNING: CPU: 0 PID: 5042 at fs/btrfs/extent-tree.c:2173 btrfs_run_delayed_refs+0x3e4/0x458 [ 55.607881][ T5042] Modules linked in: [ 55.608544][ T5042] CPU: 0 PID: 5042 Comm: syz-executor.0 Tainted: G W syzkaller #0 [ 55.610088][ T5042] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/18/2026 [ 55.611673][ T5042] pstate: 62400005 (nZCv daif +PAN -UAO +TCO -DIT -SSBS BTYPE=--) [ 55.612880][ T5042] pc : btrfs_run_delayed_refs+0x3e4/0x458 [ 55.613745][ T5042] lr : btrfs_run_delayed_refs+0x3e4/0x458 [ 55.614684][ T5042] sp : ffff800020757530 [ 55.615318][ T5042] x29: ffff800020757540 x28: ffff0000c267a000 x27: dfff800000000000 [ 55.616650][ T5042] x26: ffff0000c267a024 x25: ffff0000dbe0c000 x24: 1fffe0001bcc04fd [ 55.618018][ T5042] x23: 1fffe0001bcc04fd x22: ffff0000de6027e8 x21: 00000000fffffff4 [ 55.619415][ T5042] x20: 0000000000000051 x19: ffff0000de602790 x18: 0000000000000001 [ 55.620764][ T5042] x17: 0000000000000000 x16: ffff80001125f020 x15: 00000000ffffffff [ 55.622007][ T5042] x14: 0000000000000001 x13: 1fffe000341f05ab x12: 0000000000ff0100 [ 55.623365][ T5042] x11: 0000000000000000 x10: 0000000000000000 x9 : 1d1ea9d224e52300 [ 55.624743][ T5042] x8 : 1d1ea9d224e52300 x7 : 0000000000000001 x6 : 0000000000000001 [ 55.626093][ T5042] x5 : ffff800020756e38 x4 : ffff80001437f3e0 x3 : ffff800008509220 [ 55.627508][ T5042] x2 : 0000000000000001 x1 : 0000000100000000 x0 : 0000000000000026 [ 55.628985][ T5042] Call trace: [ 55.629577][ T5042] btrfs_run_delayed_refs+0x3e4/0x458 [ 55.630465][ T5042] btrfs_commit_transaction+0x1e0/0x3078 [ 55.631360][ T5042] btrfs_sync_fs+0x628/0xb24 [ 55.632051][ T5042] sync_filesystem+0x1a0/0x218 [ 55.632751][ T5042] btrfs_remount+0x198/0x12b0 [ 55.633551][ T5042] legacy_reconfigure+0xf8/0x110 [ 55.634350][ T5042] reconfigure_super+0x1d4/0x6f4 [ 55.635138][ T5042] path_mount+0xc88/0x1008 [ 55.635811][ T5042] __arm64_sys_mount+0x514/0x5f0 [ 55.636618][ T5042] invoke_syscall+0x98/0x2b0 [ 55.637298][ T5042] el0_svc_common+0x138/0x258 [ 55.638009][ T5042] do_el0_svc+0x58/0x13c [ 55.638681][ T5042] el0_svc+0x78/0x1d0 [ 55.639299][ T5042] el0t_64_sync_handler+0xcc/0xe4 [ 55.640171][ T5042] el0t_64_sync+0x1a0/0x1a4 [ 55.640882][ T5042] irq event stamp: 79824 [ 55.641560][ T5042] hardirqs last enabled at (79823): [] __up_console_sem+0xb4/0xfc [ 55.642954][ T5042] hardirqs last disabled at (79824): [] el1_dbg+0x24/0x80 [ 55.644265][ T5042] softirqs last enabled at (79786): [] handle_softirqs+0xa40/0xbe4 [ 55.645726][ T5042] softirqs last disabled at (79769): [] __irq_exit_rcu+0x240/0x43c [ 55.647280][ T5042] ---[ end trace 7b9430bdaa3c86c6 ]--- [ 55.648878][ T5042] BTRFS: error (device loop0) in btrfs_run_delayed_refs:2173: errno=-12 Out of memory [ 55.650407][ T5042] btrfs_printk: 133 callbacks suppressed [ 55.650415][ T5042] BTRFS info (device loop0): forced readonly [ 55.652685][ T5042] BTRFS error (device loop0): Remounting read-write after error is not allowed [ 55.819306][ T5063] set_capacity_and_notify: 9 callbacks suppressed [ 55.819315][ T5063] loop0: detected capacity change from 0 to 32768 [ 55.822965][ T5063] BTRFS: device fsid ed167579-eb65-4e76-9a50-61ac97e9b59d devid 1 transid 8 /dev/loop0 scanned by syz-executor.0 (5063) [ 55.826128][ T5063] BTRFS info (device loop0): using sha256 (sha256-ce) checksum algorithm [ 55.828356][ T5063] BTRFS info (device loop0): enabling auto defrag [ 55.829487][ T5063] BTRFS info (device loop0): enabling disk space caching [ 55.830719][ T5063] BTRFS info (device loop0): disabling tree log [ 55.831689][ T5063] BTRFS info (device loop0): force clearing of disk cache [ 55.832854][ T5063] BTRFS info (device loop0): force zlib compression, level 3 [ 55.833973][ T5063] BTRFS info (device loop0): disabling disk space caching [ 55.835168][ T5063] BTRFS info (device loop0): has skinny extents [ 55.845265][ T5063] BTRFS info (device loop0): enabling ssd optimizations [ 55.847186][ T5063] BTRFS info (device loop0): clearing free space tree [ 55.848334][ T5063] BTRFS info (device loop0): clearing compat-ro feature flag for FREE_SPACE_TREE (0x1) [ 55.849913][ T5063] BTRFS info (device loop0): clearing compat-ro feature flag for FREE_SPACE_TREE_VALID (0x2) [ 55.856067][ T5063] FAULT_INJECTION: forcing a failure. [ 55.856067][ T5063] name failslab, interval 1, probability 0, space 0, times 0 [ 55.858200][ T5063] CPU: 1 PID: 5063 Comm: syz-executor.0 Tainted: G W syzkaller #0 [ 55.859707][ T5063] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/18/2026 [ 55.861315][ T5063] Call trace: [ 55.861848][ T5063] dump_backtrace+0x0/0x458 [ 55.862605][ T5063] show_stack+0x2c/0x3c [ 55.863245][ T5063] __dump_stack+0x30/0x40 [ 55.863963][ T5063] dump_stack_lvl+0xf4/0x15c [ 55.864698][ T5063] dump_stack+0x1c/0x5c [ 55.865390][ T5063] should_fail+0x3bc/0x514 [ 55.866106][ T5063] __should_failslab+0xbc/0x10c [ 55.866916][ T5063] should_failslab+0x10/0x28 [ 55.867691][ T5063] slab_pre_alloc_hook+0x64/0xe8 [ 55.868467][ T5063] kmem_cache_alloc_trace+0x98/0x3ec [ 55.869408][ T5063] bdi_split_work_to_wbs+0x3f4/0x77c [ 55.870241][ T5063] sync_inodes_sb+0x188/0x844 [ 55.871086][ T5063] sync_filesystem+0x160/0x218 [ 55.871880][ T5063] btrfs_remount+0x198/0x12b0 [ 55.872676][ T5063] legacy_reconfigure+0xf8/0x110 [ 55.873525][ T5063] reconfigure_super+0x1d4/0x6f4 [ 55.874394][ T5063] path_mount+0xc88/0x1008 [ 55.875158][ T5063] __arm64_sys_mount+0x514/0x5f0 [ 55.875985][ T5063] invoke_syscall+0x98/0x2b0 [ 55.876750][ T5063] el0_svc_common+0x138/0x258 [ 55.877536][ T5063] do_el0_svc+0x58/0x13c [ 55.878204][ T5063] el0_svc+0x78/0x1d0 [ 55.878840][ T5063] el0t_64_sync_handler+0xcc/0xe4 [ 55.879678][ T5063] el0t_64_sync+0x1a0/0x1a4 [ 56.071282][ T5084] loop0: detected capacity change from 0 to 32768 [ 56.073744][ T5084] BTRFS: device fsid ed167579-eb65-4e76-9a50-61ac97e9b59d devid 1 transid 8 /dev/loop0 scanned by syz-executor.0 (5084) [ 56.077332][ T5084] BTRFS info (device loop0): using sha256 (sha256-ce) checksum algorithm [ 56.078813][ T5084] BTRFS info (device loop0): enabling auto defrag [ 56.079797][ T5084] BTRFS info (device loop0): enabling disk space caching [ 56.081201][ T5084] BTRFS info (device loop0): disabling tree log [ 56.082325][ T5084] BTRFS info (device loop0): force clearing of disk cache [ 56.083620][ T5084] BTRFS info (device loop0): force zlib compression, level 3 [ 56.084888][ T5084] BTRFS info (device loop0): disabling disk space caching [ 56.086034][ T5084] BTRFS info (device loop0): has skinny extents [ 56.098140][ T5084] BTRFS info (device loop0): enabling ssd optimizations [ 56.099743][ T5084] BTRFS info (device loop0): clearing free space tree [ 56.101621][ T5084] BTRFS info (device loop0): clearing compat-ro feature flag for FREE_SPACE_TREE (0x1) [ 56.103236][ T5084] BTRFS info (device loop0): clearing compat-ro feature flag for FREE_SPACE_TREE_VALID (0x2) [ 56.108189][ T5084] FAULT_INJECTION: forcing a failure. [ 56.108189][ T5084] name fail_page_alloc, interval 1, probability 0, space 0, times 1 [ 56.110923][ T5084] CPU: 0 PID: 5084 Comm: syz-executor.0 Tainted: G W syzkaller #0 [ 56.112380][ T5084] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/18/2026 [ 56.114019][ T5084] Call trace: [ 56.114558][ T5084] dump_backtrace+0x0/0x458 [ 56.115317][ T5084] show_stack+0x2c/0x3c [ 56.116024][ T5084] __dump_stack+0x30/0x40 [ 56.116772][ T5084] dump_stack_lvl+0xf4/0x15c [ 56.117517][ T5084] dump_stack+0x1c/0x5c [ 56.118215][ T5084] should_fail+0x3bc/0x514 [ 56.118969][ T5084] should_fail_alloc_page+0x74/0xa8 [ 56.119844][ T5084] prepare_alloc_pages+0x160/0x45c [ 56.120696][ T5084] __alloc_pages+0x108/0x470 [ 56.121470][ T5084] alloc_pages+0x34c/0x5c0 [ 56.122191][ T5084] new_slab+0xe0/0x544 [ 56.122839][ T5084] ___slab_alloc+0x6b4/0xd8c [ 56.123597][ T5084] __slab_alloc+0x68/0xc0 [ 56.124378][ T5084] kmem_cache_alloc_trace+0x2b8/0x3ec [ 56.125293][ T5084] bdi_split_work_to_wbs+0x3f4/0x77c [ 56.126153][ T5084] __writeback_inodes_sb_nr+0x1ac/0x224 [ 56.127042][ T5084] writeback_inodes_sb+0x78/0x8c [ 56.127845][ T5084] sync_filesystem+0xa0/0x218 [ 56.128606][ T5084] btrfs_remount+0x198/0x12b0 [ 56.129358][ T5084] legacy_reconfigure+0xf8/0x110 [ 56.130168][ T5084] reconfigure_super+0x1d4/0x6f4 [ 56.131014][ T5084] path_mount+0xc88/0x1008 [ 56.131759][ T5084] __arm64_sys_mount+0x514/0x5f0 [ 56.132634][ T5084] invoke_syscall+0x98/0x2b0 [ 56.133410][ T5084] el0_svc_common+0x138/0x258 [ 56.134200][ T5084] do_el0_svc+0x58/0x13c [ 56.134875][ T5084] el0_svc+0x78/0x1d0 [ 56.135529][ T5084] el0t_64_sync_handler+0xcc/0xe4 [ 56.136352][ T5084] el0t_64_sync+0x1a0/0x1a4 [ 56.298830][ T5105] loop0: detected capacity change from 0 to 32768 [ 56.301410][ T5105] BTRFS: device fsid ed167579-eb65-4e76-9a50-61ac97e9b59d devid 1 transid 8 /dev/loop0 scanned by syz-executor.0 (5105) [ 56.304625][ T5105] BTRFS info (device loop0): using sha256 (sha256-ce) checksum algorithm [ 56.306034][ T5105] BTRFS info (device loop0): enabling auto defrag [ 56.307036][ T5105] BTRFS info (device loop0): enabling disk space caching [ 56.308195][ T5105] BTRFS info (device loop0): disabling tree log [ 56.309189][ T5105] BTRFS info (device loop0): force clearing of disk cache [ 56.310374][ T5105] BTRFS info (device loop0): force zlib compression, level 3 [ 56.311676][ T5105] BTRFS info (device loop0): disabling disk space caching [ 56.312861][ T5105] BTRFS info (device loop0): has skinny extents [ 56.326031][ T5105] BTRFS info (device loop0): enabling ssd optimizations [ 56.327568][ T5105] BTRFS info (device loop0): clearing free space tree [ 56.328760][ T5105] BTRFS info (device loop0): clearing compat-ro feature flag for FREE_SPACE_TREE (0x1) [ 56.330381][ T5105] BTRFS info (device loop0): clearing compat-ro feature flag for FREE_SPACE_TREE_VALID (0x2) [ 56.336504][ T5105] FAULT_INJECTION: forcing a failure. [ 56.336504][ T5105] name failslab, interval 1, probability 0, space 0, times 0 [ 56.338724][ T5105] CPU: 0 PID: 5105 Comm: syz-executor.0 Tainted: G W syzkaller #0 [ 56.340260][ T5105] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/18/2026 [ 56.341879][ T5105] Call trace: [ 56.342415][ T5105] dump_backtrace+0x0/0x458 [ 56.343165][ T5105] show_stack+0x2c/0x3c [ 56.343851][ T5105] __dump_stack+0x30/0x40 [ 56.344581][ T5105] dump_stack_lvl+0xf4/0x15c [ 56.345413][ T5105] dump_stack+0x1c/0x5c [ 56.346114][ T5105] should_fail+0x3bc/0x514 [ 56.346845][ T5105] __should_failslab+0xbc/0x10c [ 56.347671][ T5105] should_failslab+0x10/0x28 [ 56.348412][ T5105] slab_pre_alloc_hook+0x64/0xe8 [ 56.349222][ T5105] kmem_cache_alloc+0x94/0x3d4 [ 56.350033][ T5105] btrfs_alloc_path+0x5c/0x68 [ 56.350842][ T5105] __btrfs_free_extent+0x1a8/0x1abc [ 56.351703][ T5105] __btrfs_run_delayed_refs+0xbf0/0x348c [ 56.352634][ T5105] btrfs_run_delayed_refs+0x124/0x458 [ 56.353499][ T5105] btrfs_commit_transaction+0x1e0/0x3078 [ 56.354392][ T5105] btrfs_sync_fs+0x628/0xb24 [ 56.355160][ T5105] sync_filesystem+0x1a0/0x218 [ 56.355968][ T5105] btrfs_remount+0x198/0x12b0 [ 56.356698][ T5105] legacy_reconfigure+0xf8/0x110 [ 56.357543][ T5105] reconfigure_super+0x1d4/0x6f4 [ 56.358326][ T5105] path_mount+0xc88/0x1008 [ 56.359011][ T5105] __arm64_sys_mount+0x514/0x5f0 [ 56.359820][ T5105] invoke_syscall+0x98/0x2b0 [ 56.360579][ T5105] el0_svc_common+0x138/0x258 [ 56.361353][ T5105] do_el0_svc+0x58/0x13c [ 56.362029][ T5105] el0_svc+0x78/0x1d0 [ 56.362684][ T5105] el0t_64_sync_handler+0xcc/0xe4 [ 56.363515][ T5105] el0t_64_sync+0x1a0/0x1a4 [ 56.364462][ T5105] BTRFS error (device loop0): failed to run delayed ref for logical 5255168 num_bytes 4096 type 176 action 2 ref_mod 1: -12 [ 56.366602][ T5105] ------------[ cut here ]------------ [ 56.367528][ T5105] WARNING: CPU: 0 PID: 5105 at fs/btrfs/extent-tree.c:2173 btrfs_run_delayed_refs+0x3e4/0x458 [ 56.369102][ T5105] Modules linked in: [ 56.369780][ T5105] CPU: 0 PID: 5105 Comm: syz-executor.0 Tainted: G W syzkaller #0 [ 56.371309][ T5105] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/18/2026 [ 56.372923][ T5105] pstate: 62400005 (nZCv daif +PAN -UAO +TCO -DIT -SSBS BTYPE=--) [ 56.374265][ T5105] pc : btrfs_run_delayed_refs+0x3e4/0x458 [ 56.375245][ T5105] lr : btrfs_run_delayed_refs+0x3e4/0x458 [ 56.376207][ T5105] sp : ffff800020ef7530 [ 56.376895][ T5105] x29: ffff800020ef7540 x28: ffff0000ce48c000 x27: dfff800000000000 [ 56.378311][ T5105] x26: ffff0000ce48c024 x25: ffff0000cf010000 x24: 1fffe0001bcc05ad [ 56.379555][ T5105] x23: 1fffe0001bcc05ad x22: ffff0000de602d68 x21: 00000000fffffff4 [ 56.380914][ T5105] x20: 0000000000000051 x19: ffff0000de602d10 x18: 0000000000000001 [ 56.382279][ T5105] x17: 0000000000000000 x16: ffff80001125f020 x15: 00000000ffffffff [ 56.383579][ T5105] x14: 0000000000000001 x13: 1fffe000341f05ab x12: 0000000000ff0100 [ 56.384933][ T5105] x11: 0000000000000000 x10: 0000000000000000 x9 : be0d7a13ac14bb00 [ 56.386257][ T5105] x8 : be0d7a13ac14bb00 x7 : 0000000000000001 x6 : 0000000000000001 [ 56.387542][ T5105] x5 : ffff800020ef6e38 x4 : ffff80001437f3e0 x3 : ffff800008509220 [ 56.388936][ T5105] x2 : 0000000000000001 x1 : 0000000100000000 x0 : 0000000000000026 [ 56.390262][ T5105] Call trace: [ 56.390776][ T5105] btrfs_run_delayed_refs+0x3e4/0x458 [ 56.391639][ T5105] btrfs_commit_transaction+0x1e0/0x3078 [ 56.392608][ T5105] btrfs_sync_fs+0x628/0xb24 [ 56.393420][ T5105] sync_filesystem+0x1a0/0x218 [ 56.394217][ T5105] btrfs_remount+0x198/0x12b0 [ 56.394956][ T5105] legacy_reconfigure+0xf8/0x110 [ 56.395815][ T5105] reconfigure_super+0x1d4/0x6f4 [ 56.396665][ T5105] path_mount+0xc88/0x1008 [ 56.397402][ T5105] __arm64_sys_mount+0x514/0x5f0 [ 56.398212][ T5105] invoke_syscall+0x98/0x2b0 [ 56.399015][ T5105] el0_svc_common+0x138/0x258 [ 56.399815][ T5105] do_el0_svc+0x58/0x13c [ 56.400533][ T5105] el0_svc+0x78/0x1d0 [ 56.401204][ T5105] el0t_64_sync_handler+0xcc/0xe4 [ 56.402014][ T5105] el0t_64_sync+0x1a0/0x1a4 [ 56.402730][ T5105] irq event stamp: 79800 [ 56.403398][ T5105] hardirqs last enabled at (79799): [] __up_console_sem+0xb4/0xfc [ 56.405023][ T5105] hardirqs last disabled at (79800): [] el1_dbg+0x24/0x80 [ 56.406458][ T5105] softirqs last enabled at (79764): [] handle_softirqs+0xa40/0xbe4 [ 56.408115][ T5105] softirqs last disabled at (79747): [] __irq_exit_rcu+0x240/0x43c [ 56.409527][ T5105] ---[ end trace 7b9430bdaa3c86c7 ]--- [ 56.410518][ T5105] BTRFS: error (device loop0) in btrfs_run_delayed_refs:2173: errno=-12 Out of memory [ 56.411982][ T5105] BTRFS info (device loop0): forced readonly [ 56.412917][ T5105] BTRFS error (device loop0): Remounting read-write after error is not allowed [ 56.595209][ T5126] loop0: detected capacity change from 0 to 32768 [ 56.597655][ T5126] BTRFS: device fsid ed167579-eb65-4e76-9a50-61ac97e9b59d devid 1 transid 8 /dev/loop0 scanned by syz-executor.0 (5126) [ 56.602626][ T5126] BTRFS info (device loop0): using sha256 (sha256-ce) checksum algorithm [ 56.604133][ T5126] BTRFS info (device loop0): enabling auto defrag [ 56.605370][ T5126] BTRFS info (device loop0): enabling disk space caching [ 56.606617][ T5126] BTRFS info (device loop0): disabling tree log [ 56.607804][ T5126] BTRFS info (device loop0): force clearing of disk cache [ 56.609114][ T5126] BTRFS info (device loop0): force zlib compression, level 3 [ 56.610386][ T5126] BTRFS info (device loop0): disabling disk space caching [ 56.611813][ T5126] BTRFS info (device loop0): has skinny extents [ 56.628879][ T5126] BTRFS info (device loop0): enabling ssd optimizations [ 56.630815][ T5126] BTRFS info (device loop0): clearing free space tree [ 56.632144][ T5126] BTRFS info (device loop0): clearing compat-ro feature flag for FREE_SPACE_TREE (0x1) [ 56.633823][ T5126] BTRFS info (device loop0): clearing compat-ro feature flag for FREE_SPACE_TREE_VALID (0x2) [ 56.639736][ T5126] FAULT_INJECTION: forcing a failure. [ 56.639736][ T5126] name failslab, interval 1, probability 0, space 0, times 0 [ 56.641981][ T5126] CPU: 0 PID: 5126 Comm: syz-executor.0 Tainted: G W syzkaller #0 [ 56.643499][ T5126] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/18/2026 [ 56.645266][ T5126] Call trace: [ 56.645776][ T5126] dump_backtrace+0x0/0x458 [ 56.646545][ T5126] show_stack+0x2c/0x3c [ 56.647218][ T5126] __dump_stack+0x30/0x40 [ 56.647934][ T5126] dump_stack_lvl+0xf4/0x15c [ 56.648671][ T5126] dump_stack+0x1c/0x5c [ 56.649348][ T5126] should_fail+0x3bc/0x514 [ 56.650039][ T5126] __should_failslab+0xbc/0x10c [ 56.650913][ T5126] should_failslab+0x10/0x28 [ 56.651750][ T5126] slab_pre_alloc_hook+0x64/0xe8 [ 56.652593][ T5126] kmem_cache_alloc+0x94/0x3d4 [ 56.653409][ T5126] btrfs_alloc_path+0x5c/0x68 [ 56.654192][ T5126] __btrfs_free_extent+0x1a8/0x1abc [ 56.655024][ T5126] __btrfs_run_delayed_refs+0xbf0/0x348c [ 56.655977][ T5126] btrfs_run_delayed_refs+0x124/0x458 [ 56.656903][ T5126] btrfs_commit_transaction+0x1e0/0x3078 [ 56.657856][ T5126] btrfs_sync_fs+0x628/0xb24 [ 56.658640][ T5126] sync_filesystem+0x1a0/0x218 [ 56.659451][ T5126] btrfs_remount+0x198/0x12b0 [ 56.660241][ T5126] legacy_reconfigure+0xf8/0x110 [ 56.661085][ T5126] reconfigure_super+0x1d4/0x6f4 [ 56.661916][ T5126] path_mount+0xc88/0x1008 [ 56.662654][ T5126] __arm64_sys_mount+0x514/0x5f0 [ 56.663442][ T5126] invoke_syscall+0x98/0x2b0 [ 56.664113][ T5126] el0_svc_common+0x138/0x258 [ 56.664837][ T5126] do_el0_svc+0x58/0x13c [ 56.665583][ T5126] el0_svc+0x78/0x1d0 [ 56.666253][ T5126] el0t_64_sync_handler+0xcc/0xe4 [ 56.667157][ T5126] el0t_64_sync+0x1a0/0x1a4 [ 56.668215][ T5126] BTRFS error (device loop0): failed to run delayed ref for logical 5255168 num_bytes 4096 type 176 action 2 ref_mod 1: -12 [ 56.670537][ T5126] ------------[ cut here ]------------ [ 56.671572][ T5126] WARNING: CPU: 0 PID: 5126 at fs/btrfs/extent-tree.c:2173 btrfs_run_delayed_refs+0x3e4/0x458 [ 56.673219][ T5126] Modules linked in: [ 56.673819][ T5126] CPU: 0 PID: 5126 Comm: syz-executor.0 Tainted: G W syzkaller #0 [ 56.675488][ T5126] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/18/2026 [ 56.677218][ T5126] pstate: 62400005 (nZCv daif +PAN -UAO +TCO -DIT -SSBS BTYPE=--) [ 56.678585][ T5126] pc : btrfs_run_delayed_refs+0x3e4/0x458 [ 56.679488][ T5126] lr : btrfs_run_delayed_refs+0x3e4/0x458 [ 56.680427][ T5126] sp : ffff8000211c7530 [ 56.681158][ T5126] x29: ffff8000211c7540 x28: ffff0000ce489000 x27: dfff800000000000 [ 56.682563][ T5126] x26: ffff0000ce489024 x25: ffff0000d7cb8000 x24: 1fffe0001bcc05ef [ 56.683961][ T5126] x23: 1fffe0001bcc05ef x22: ffff0000de602f78 x21: 00000000fffffff4 [ 56.685248][ T5126] x20: 0000000000000051 x19: ffff0000de602f20 x18: 0000000000000001 [ 56.686634][ T5126] x17: 0000000000000000 x16: ffff80001125f020 x15: 00000000ffffffff [ 56.687940][ T5126] x14: 0000000000000001 x13: 1fffe000341f05ab x12: 0000000000ff0100 [ 56.689211][ T5126] x11: 0000000000000000 x10: 0000000000000000 x9 : 6c02a85a25518e00 [ 56.690558][ T5126] x8 : 6c02a85a25518e00 x7 : 0000000000000001 x6 : 0000000000000001 [ 56.691879][ T5126] x5 : ffff8000211c6e38 x4 : ffff80001437f3e0 x3 : ffff800008509220 [ 56.693185][ T5126] x2 : 0000000000000001 x1 : 0000000100000000 x0 : 0000000000000026 [ 56.694529][ T5126] Call trace: [ 56.695072][ T5126] btrfs_run_delayed_refs+0x3e4/0x458 [ 56.695965][ T5126] btrfs_commit_transaction+0x1e0/0x3078 [ 56.696899][ T5126] btrfs_sync_fs+0x628/0xb24 [ 56.697688][ T5126] sync_filesystem+0x1a0/0x218 [ 56.698551][ T5126] btrfs_remount+0x198/0x12b0 [ 56.699320][ T5126] legacy_reconfigure+0xf8/0x110 [ 56.700174][ T5126] reconfigure_super+0x1d4/0x6f4 [ 56.701016][ T5126] path_mount+0xc88/0x1008 [ 56.701791][ T5126] __arm64_sys_mount+0x514/0x5f0 [ 56.702664][ T5126] invoke_syscall+0x98/0x2b0 [ 56.703462][ T5126] el0_svc_common+0x138/0x258 [ 56.704270][ T5126] do_el0_svc+0x58/0x13c [ 56.704988][ T5126] el0_svc+0x78/0x1d0 [ 56.705697][ T5126] el0t_64_sync_handler+0xcc/0xe4 [ 56.706581][ T5126] el0t_64_sync+0x1a0/0x1a4 [ 56.707358][ T5126] irq event stamp: 80364 [ 56.708049][ T5126] hardirqs last enabled at (80363): [] __up_console_sem+0xb4/0xfc [ 56.709722][ T5126] hardirqs last disabled at (80364): [] el1_dbg+0x24/0x80 [ 56.711258][ T5126] softirqs last enabled at (80328): [] handle_softirqs+0xa40/0xbe4 [ 56.712891][ T5126] softirqs last disabled at (80291): [] __irq_exit_rcu+0x240/0x43c [ 56.714593][ T5126] ---[ end trace 7b9430bdaa3c86c8 ]--- [ 56.716013][ T5126] BTRFS: error (device loop0) in btrfs_run_delayed_refs:2173: errno=-12 Out of memory [ 56.717641][ T5126] BTRFS info (device loop0): forced readonly [ 56.718623][ T5126] BTRFS error (device loop0): Remounting read-write after error is not allowed [ 56.888565][ T5147] loop0: detected capacity change from 0 to 32768 [ 56.891546][ T5147] BTRFS: device fsid ed167579-eb65-4e76-9a50-61ac97e9b59d devid 1 transid 8 /dev/loop0 scanned by syz-executor.0 (5147) [ 56.894797][ T5147] BTRFS info (device loop0): using sha256 (sha256-ce) checksum algorithm [ 56.896198][ T5147] BTRFS info (device loop0): enabling auto defrag [ 56.897176][ T5147] BTRFS info (device loop0): enabling disk space caching [ 56.898429][ T5147] BTRFS info (device loop0): disabling tree log [ 56.899364][ T5147] BTRFS info (device loop0): force clearing of disk cache [ 56.900966][ T5147] BTRFS info (device loop0): force zlib compression, level 3 [ 56.902304][ T5147] BTRFS info (device loop0): disabling disk space caching [ 56.903476][ T5147] BTRFS info (device loop0): has skinny extents [ 56.912055][ T5147] BTRFS info (device loop0): enabling ssd optimizations [ 56.913829][ T5147] BTRFS info (device loop0): clearing free space tree [ 56.915080][ T5147] BTRFS info (device loop0): clearing compat-ro feature flag for FREE_SPACE_TREE (0x1) [ 56.916749][ T5147] BTRFS info (device loop0): clearing compat-ro feature flag for FREE_SPACE_TREE_VALID (0x2) [ 56.922800][ T5147] FAULT_INJECTION: forcing a failure. [ 56.922800][ T5147] name failslab, interval 1, probability 0, space 0, times 0 [ 56.924978][ T5147] CPU: 1 PID: 5147 Comm: syz-executor.0 Tainted: G W syzkaller #0 [ 56.926413][ T5147] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/18/2026 [ 56.928145][ T5147] Call trace: [ 56.928714][ T5147] dump_backtrace+0x0/0x458 [ 56.929446][ T5147] show_stack+0x2c/0x3c [ 56.930169][ T5147] __dump_stack+0x30/0x40 [ 56.930935][ T5147] dump_stack_lvl+0xf4/0x15c [ 56.931715][ T5147] dump_stack+0x1c/0x5c [ 56.932448][ T5147] should_fail+0x3bc/0x514 [ 56.933199][ T5147] __should_failslab+0xbc/0x10c [ 56.934015][ T5147] should_failslab+0x10/0x28 [ 56.934726][ T5147] slab_pre_alloc_hook+0x64/0xe8 [ 56.935535][ T5147] kmem_cache_alloc_trace+0x98/0x3ec [ 56.936415][ T5147] bdi_split_work_to_wbs+0x3f4/0x77c [ 56.937312][ T5147] __writeback_inodes_sb_nr+0x1ac/0x224 [ 56.938212][ T5147] writeback_inodes_sb+0x78/0x8c [ 56.938987][ T5147] sync_filesystem+0xa0/0x218 [ 56.939760][ T5147] btrfs_remount+0x198/0x12b0 [ 56.940521][ T5147] legacy_reconfigure+0xf8/0x110 [ 56.941379][ T5147] reconfigure_super+0x1d4/0x6f4 [ 56.942267][ T5147] path_mount+0xc88/0x1008 [ 56.942988][ T5147] __arm64_sys_mount+0x514/0x5f0 [ 56.943782][ T5147] invoke_syscall+0x98/0x2b0 [ 56.944585][ T5147] el0_svc_common+0x138/0x258 [ 56.945333][ T5147] do_el0_svc+0x58/0x13c [ 56.945985][ T5147] el0_svc+0x78/0x1d0 [ 56.946606][ T5147] el0t_64_sync_handler+0xcc/0xe4 [ 56.947440][ T5147] el0t_64_sync+0x1a0/0x1a4 [ 57.155876][ T5168] loop0: detected capacity change from 0 to 32768 [ 57.170756][ T5168] BTRFS: device fsid ed167579-eb65-4e76-9a50-61ac97e9b59d devid 1 transid 8 /dev/loop0 scanned by syz-executor.0 (5168) [ 57.175684][ T5168] BTRFS info (device loop0): using sha256 (sha256-ce) checksum algorithm [ 57.177197][ T5168] BTRFS info (device loop0): enabling auto defrag [ 57.178112][ T5168] BTRFS info (device loop0): enabling disk space caching [ 57.179239][ T5168] BTRFS info (device loop0): disabling tree log [ 57.180171][ T5168] BTRFS info (device loop0): force clearing of disk cache [ 57.190912][ T5168] BTRFS info (device loop0): force zlib compression, level 3 [ 57.192178][ T5168] BTRFS info (device loop0): disabling disk space caching [ 57.193464][ T5168] BTRFS info (device loop0): has skinny extents [ 57.213380][ T5168] BTRFS info (device loop0): enabling ssd optimizations [ 57.215455][ T5168] BTRFS info (device loop0): clearing free space tree [ 57.216638][ T5168] BTRFS info (device loop0): clearing compat-ro feature flag for FREE_SPACE_TREE (0x1) [ 57.218182][ T5168] BTRFS info (device loop0): clearing compat-ro feature flag for FREE_SPACE_TREE_VALID (0x2) [ 57.224664][ T5168] FAULT_INJECTION: forcing a failure. [ 57.224664][ T5168] name failslab, interval 1, probability 0, space 0, times 0 [ 57.226997][ T5168] CPU: 0 PID: 5168 Comm: syz-executor.0 Tainted: G W syzkaller #0 [ 57.228451][ T5168] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/18/2026 [ 57.230069][ T5168] Call trace: [ 57.230648][ T5168] dump_backtrace+0x0/0x458 [ 57.231431][ T5168] show_stack+0x2c/0x3c [ 57.232081][ T5168] __dump_stack+0x30/0x40 [ 57.232707][ T5168] dump_stack_lvl+0xf4/0x15c [ 57.233456][ T5168] dump_stack+0x1c/0x5c [ 57.234132][ T5168] should_fail+0x3bc/0x514 [ 57.234888][ T5168] __should_failslab+0xbc/0x10c [ 57.235688][ T5168] should_failslab+0x10/0x28 [ 57.236415][ T5168] slab_pre_alloc_hook+0x64/0xe8 [ 57.237137][ T5168] kmem_cache_alloc+0x94/0x3d4 [ 57.237896][ T5168] btrfs_alloc_path+0x5c/0x68 [ 57.238611][ T5168] __btrfs_free_extent+0x1a8/0x1abc [ 57.239435][ T5168] __btrfs_run_delayed_refs+0xbf0/0x348c [ 57.240309][ T5168] btrfs_run_delayed_refs+0x124/0x458 [ 57.241072][ T5168] btrfs_commit_transaction+0x1e0/0x3078 [ 57.241882][ T5168] btrfs_sync_fs+0x628/0xb24 [ 57.242503][ T5168] sync_filesystem+0x1a0/0x218 [ 57.243204][ T5168] btrfs_remount+0x198/0x12b0 [ 57.243874][ T5168] legacy_reconfigure+0xf8/0x110 [ 57.244618][ T5168] reconfigure_super+0x1d4/0x6f4 [ 57.245446][ T5168] path_mount+0xc88/0x1008 [ 57.246161][ T5168] __arm64_sys_mount+0x514/0x5f0 [ 57.246971][ T5168] invoke_syscall+0x98/0x2b0 [ 57.247682][ T5168] el0_svc_common+0x138/0x258 [ 57.248462][ T5168] do_el0_svc+0x58/0x13c [ 57.249161][ T5168] el0_svc+0x78/0x1d0 [ 57.249809][ T5168] el0t_64_sync_handler+0xcc/0xe4 [ 57.250632][ T5168] el0t_64_sync+0x1a0/0x1a4 [ 57.252084][ T5168] BTRFS error (device loop0): failed to run delayed ref for logical 5255168 num_bytes 4096 type 176 action 2 ref_mod 1: -12 [ 57.254304][ T5168] ------------[ cut here ]------------ [ 57.255300][ T5168] WARNING: CPU: 1 PID: 5168 at fs/btrfs/extent-tree.c:2173 btrfs_run_delayed_refs+0x3e4/0x458 [ 57.256974][ T5168] Modules linked in: [ 57.257563][ T5168] CPU: 1 PID: 5168 Comm: syz-executor.0 Tainted: G W syzkaller #0 [ 57.259075][ T5168] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/18/2026 [ 57.260638][ T5168] pstate: 62400005 (nZCv daif +PAN -UAO +TCO -DIT -SSBS BTYPE=--) [ 57.261979][ T5168] pc : btrfs_run_delayed_refs+0x3e4/0x458 [ 57.262933][ T5168] lr : btrfs_run_delayed_refs+0x3e4/0x458 [ 57.263864][ T5168] sp : ffff800021567530 [ 57.264602][ T5168] x29: ffff800021567540 x28: ffff0000de17c000 x27: dfff800000000000 [ 57.265950][ T5168] x26: ffff0000de17c024 x25: ffff0000d1d1c000 x24: 1fffe0001bcc1b13 [ 57.267350][ T5168] x23: 1fffe0001bcc1b13 x22: ffff0000de60d898 x21: 00000000fffffff4 [ 57.268668][ T5168] x20: 0000000000000051 x19: ffff0000de60d840 x18: 0000000000000001 [ 57.270042][ T5168] x17: 0000000000000000 x16: ffff80001125f020 x15: 00000000ffffffff [ 57.271418][ T5168] x14: 0000000000000001 x13: 1fffe000341f47ab x12: 0000000000ff0100 [ 57.272804][ T5168] x11: 0000000000000000 x10: 0000000000000000 x9 : 4b8d161059169c00 [ 57.274185][ T5168] x8 : 4b8d161059169c00 x7 : 0000000000000001 x6 : 0000000000000001 [ 57.275525][ T5168] x5 : ffff800021566e38 x4 : ffff80001437f3e0 x3 : ffff800008509220 [ 57.276901][ T5168] x2 : 0000000000000001 x1 : 0000000100000000 x0 : 0000000000000026 [ 57.278280][ T5168] Call trace: [ 57.278852][ T5168] btrfs_run_delayed_refs+0x3e4/0x458 [ 57.279771][ T5168] btrfs_commit_transaction+0x1e0/0x3078 [ 57.280785][ T5168] btrfs_sync_fs+0x628/0xb24 [ 57.281565][ T5168] sync_filesystem+0x1a0/0x218 [ 57.282375][ T5168] btrfs_remount+0x198/0x12b0 [ 57.283160][ T5168] legacy_reconfigure+0xf8/0x110 [ 57.283966][ T5168] reconfigure_super+0x1d4/0x6f4 [ 57.284773][ T5168] path_mount+0xc88/0x1008 [ 57.285523][ T5168] __arm64_sys_mount+0x514/0x5f0 [ 57.286324][ T5168] invoke_syscall+0x98/0x2b0 [ 57.287095][ T5168] el0_svc_common+0x138/0x258 [ 57.287872][ T5168] do_el0_svc+0x58/0x13c [ 57.288582][ T5168] el0_svc+0x78/0x1d0 [ 57.289284][ T5168] el0t_64_sync_handler+0xcc/0xe4 [ 57.290154][ T5168] el0t_64_sync+0x1a0/0x1a4 [ 57.290873][ T5168] irq event stamp: 80930 [ 57.291594][ T5168] hardirqs last enabled at (80929): [] __up_console_sem+0xb4/0xfc [ 57.293185][ T5168] hardirqs last disabled at (80930): [] el1_dbg+0x24/0x80 [ 57.294628][ T5168] softirqs last enabled at (80898): [] handle_softirqs+0xa40/0xbe4 [ 57.296231][ T5168] softirqs last disabled at (80891): [] __irq_exit_rcu+0x240/0x43c [ 57.297819][ T5168] ---[ end trace 7b9430bdaa3c86c9 ]--- [ 57.299651][ T5168] BTRFS: error (device loop0) in btrfs_run_delayed_refs:2173: errno=-12 Out of memory [ 57.301346][ T5168] BTRFS info (device loop0): forced readonly [ 57.302390][ T5168] BTRFS error (device loop0): Remounting read-write after error is not allowed [ 57.489893][ T5189] loop0: detected capacity change from 0 to 32768 [ 57.492436][ T5189] BTRFS: device fsid ed167579-eb65-4e76-9a50-61ac97e9b59d devid 1 transid 8 /dev/loop0 scanned by syz-executor.0 (5189) [ 57.497366][ T5189] BTRFS info (device loop0): using sha256 (sha256-ce) checksum algorithm [ 57.498847][ T5189] BTRFS info (device loop0): enabling auto defrag [ 57.499862][ T5189] BTRFS info (device loop0): enabling disk space caching [ 57.501161][ T5189] BTRFS info (device loop0): disabling tree log [ 57.502205][ T5189] BTRFS info (device loop0): force clearing of disk cache [ 57.503347][ T5189] BTRFS info (device loop0): force zlib compression, level 3 [ 57.504533][ T5189] BTRFS info (device loop0): disabling disk space caching [ 57.505599][ T5189] BTRFS info (device loop0): has skinny extents [ 57.514093][ T5189] BTRFS info (device loop0): enabling ssd optimizations [ 57.515707][ T5189] BTRFS info (device loop0): clearing free space tree [ 57.516862][ T5189] BTRFS info (device loop0): clearing compat-ro feature flag for FREE_SPACE_TREE (0x1) [ 57.518497][ T5189] BTRFS info (device loop0): clearing compat-ro feature flag for FREE_SPACE_TREE_VALID (0x2) [ 57.524709][ T5189] FAULT_INJECTION: forcing a failure. [ 57.524709][ T5189] name failslab, interval 1, probability 0, space 0, times 0 [ 57.526976][ T5189] CPU: 0 PID: 5189 Comm: syz-executor.0 Tainted: G W syzkaller #0 [ 57.528258][ T5189] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/18/2026 [ 57.529903][ T5189] Call trace: [ 57.530425][ T5189] dump_backtrace+0x0/0x458 [ 57.531165][ T5189] show_stack+0x2c/0x3c [ 57.531856][ T5189] __dump_stack+0x30/0x40 [ 57.532596][ T5189] dump_stack_lvl+0xf4/0x15c [ 57.533310][ T5189] dump_stack+0x1c/0x5c [ 57.533978][ T5189] should_fail+0x3bc/0x514 [ 57.534686][ T5189] __should_failslab+0xbc/0x10c [ 57.535448][ T5189] should_failslab+0x10/0x28 [ 57.536150][ T5189] slab_pre_alloc_hook+0x64/0xe8 [ 57.536929][ T5189] kmem_cache_alloc+0x94/0x3d4 [ 57.537714][ T5189] start_transaction+0x4d0/0x13ec [ 57.538557][ T5189] btrfs_attach_transaction_barrier+0x30/0xac [ 57.539568][ T5189] btrfs_sync_fs+0x13c/0xb24 [ 57.540316][ T5189] sync_filesystem+0x1a0/0x218 [ 57.541098][ T5189] btrfs_remount+0x198/0x12b0 [ 57.541878][ T5189] legacy_reconfigure+0xf8/0x110 [ 57.542705][ T5189] reconfigure_super+0x1d4/0x6f4 [ 57.543566][ T5189] path_mount+0xc88/0x1008 [ 57.544289][ T5189] __arm64_sys_mount+0x514/0x5f0 [ 57.545156][ T5189] invoke_syscall+0x98/0x2b0 [ 57.545888][ T5189] el0_svc_common+0x138/0x258 [ 57.546625][ T5189] do_el0_svc+0x58/0x13c [ 57.547361][ T5189] el0_svc+0x78/0x1d0 [ 57.548060][ T5189] el0t_64_sync_handler+0xcc/0xe4 [ 57.548923][ T5189] el0t_64_sync+0x1a0/0x1a4 [ 57.610759][ T4570] Bluetooth: hci0: command 0x0419 tx timeout [ 57.720281][ T5210] loop0: detected capacity change from 0 to 32768 [ 57.730280][ T5210] BTRFS: device fsid ed167579-eb65-4e76-9a50-61ac97e9b59d devid 1 transid 8 /dev/loop0 scanned by syz-executor.0 (5210) [ 57.735916][ T5210] BTRFS info (device loop0): using sha256 (sha256-ce) checksum algorithm [ 57.737334][ T5210] BTRFS info (device loop0): enabling auto defrag [ 57.738377][ T5210] BTRFS info (device loop0): enabling disk space caching [ 57.739473][ T5210] BTRFS info (device loop0): disabling tree log [ 57.740420][ T5210] BTRFS info (device loop0): force clearing of disk cache [ 57.742235][ T5210] BTRFS info (device loop0): force zlib compression, level 3 [ 57.743443][ T5210] BTRFS info (device loop0): disabling disk space caching [ 57.744573][ T5210] BTRFS info (device loop0): has skinny extents [ 57.752291][ T5210] BTRFS info (device loop0): enabling ssd optimizations [ 57.753942][ T5210] BTRFS info (device loop0): clearing free space tree [ 57.755016][ T5210] BTRFS info (device loop0): clearing compat-ro feature flag for FREE_SPACE_TREE (0x1) [ 57.756546][ T5210] BTRFS info (device loop0): clearing compat-ro feature flag for FREE_SPACE_TREE_VALID (0x2) [ 57.762257][ T5210] FAULT_INJECTION: forcing a failure. [ 57.762257][ T5210] name failslab, interval 1, probability 0, space 0, times 0 [ 57.764570][ T5210] CPU: 1 PID: 5210 Comm: syz-executor.0 Tainted: G W syzkaller #0 [ 57.766141][ T5210] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/18/2026 [ 57.767892][ T5210] Call trace: [ 57.768505][ T5210] dump_backtrace+0x0/0x458 [ 57.769304][ T5210] show_stack+0x2c/0x3c [ 57.770008][ T5210] __dump_stack+0x30/0x40 [ 57.770779][ T5210] dump_stack_lvl+0xf4/0x15c [ 57.771543][ T5210] dump_stack+0x1c/0x5c [ 57.772258][ T5210] should_fail+0x3bc/0x514 [ 57.773006][ T5210] __should_failslab+0xbc/0x10c [ 57.773838][ T5210] should_failslab+0x10/0x28 [ 57.774569][ T5210] slab_pre_alloc_hook+0x64/0xe8 [ 57.775345][ T5210] kmem_cache_alloc+0x94/0x3d4 [ 57.776166][ T5210] start_transaction+0x4d0/0x13ec [ 57.777002][ T5210] btrfs_attach_transaction_barrier+0x30/0xac [ 57.778029][ T5210] btrfs_sync_fs+0x13c/0xb24 [ 57.778755][ T5210] sync_filesystem+0x1a0/0x218 [ 57.779528][ T5210] btrfs_remount+0x198/0x12b0 [ 57.780314][ T5210] legacy_reconfigure+0xf8/0x110 [ 57.781144][ T5210] reconfigure_super+0x1d4/0x6f4 [ 57.781943][ T5210] path_mount+0xc88/0x1008 [ 57.782645][ T5210] __arm64_sys_mount+0x514/0x5f0 [ 57.783440][ T5210] invoke_syscall+0x98/0x2b0 [ 57.784209][ T5210] el0_svc_common+0x138/0x258 [ 57.785007][ T5210] do_el0_svc+0x58/0x13c [ 57.785708][ T5210] el0_svc+0x78/0x1d0 [ 57.786326][ T5210] el0t_64_sync_handler+0xcc/0xe4 [ 57.787107][ T5210] el0t_64_sync+0x1a0/0x1a4 [ 57.977215][ T5231] loop0: detected capacity change from 0 to 32768 [ 57.979669][ T5231] BTRFS: device fsid ed167579-eb65-4e76-9a50-61ac97e9b59d devid 1 transid 8 /dev/loop0 scanned by syz-executor.0 (5231) [ 58.003635][ T5231] FAULT_INJECTION: forcing a failure. [ 58.003635][ T5231] name failslab, interval 1, probability 0, space 0, times 0 [ 58.005856][ T5231] CPU: 1 PID: 5231 Comm: syz-executor.0 Tainted: G W syzkaller #0 [ 58.007328][ T5231] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/18/2026 [ 58.009106][ T5231] Call trace: [ 58.009705][ T5231] dump_backtrace+0x0/0x458 [ 58.010481][ T5231] show_stack+0x2c/0x3c [ 58.011149][ T5231] __dump_stack+0x30/0x40 [ 58.011900][ T5231] dump_stack_lvl+0xf4/0x15c [ 58.012615][ T5231] dump_stack+0x1c/0x5c [ 58.013291][ T5231] should_fail+0x3bc/0x514 [ 58.013995][ T5231] __should_failslab+0xbc/0x10c [ 58.014783][ T5231] should_failslab+0x10/0x28 [ 58.015565][ T5231] slab_pre_alloc_hook+0x64/0xe8 [ 58.016394][ T5231] kmem_cache_alloc_trace+0x98/0x3ec [ 58.017229][ T5231] bdi_split_work_to_wbs+0x3f4/0x77c [ 58.018168][ T5231] sync_inodes_sb+0x188/0x844 [ 58.018980][ T5231] sync_filesystem+0x160/0x218 [ 58.019744][ T5231] btrfs_remount+0x198/0x12b0 [ 58.020554][ T5231] legacy_reconfigure+0xf8/0x110 [ 58.021426][ T5231] reconfigure_super+0x1d4/0x6f4 [ 58.022190][ T5231] path_mount+0xc88/0x1008 [ 58.022899][ T5231] __arm64_sys_mount+0x514/0x5f0 [ 58.023738][ T5231] invoke_syscall+0x98/0x2b0 [ 58.024531][ T5231] el0_svc_common+0x138/0x258 [ 58.025348][ T5231] do_el0_svc+0x58/0x13c [ 58.026048][ T5231] el0_svc+0x78/0x1d0 [ 58.026746][ T5231] el0t_64_sync_handler+0xcc/0xe4 [ 58.027614][ T5231] el0t_64_sync+0x1a0/0x1a4 [ 58.207734][ T5252] loop0: detected capacity change from 0 to 32768 [ 58.210391][ T5252] BTRFS: device fsid ed167579-eb65-4e76-9a50-61ac97e9b59d devid 1 transid 8 /dev/loop0 scanned by syz-executor.0 (5252) [ 58.238593][ T5252] FAULT_INJECTION: forcing a failure. [ 58.238593][ T5252] name failslab, interval 1, probability 0, space 0, times 0 [ 58.241589][ T5252] CPU: 1 PID: 5252 Comm: syz-executor.0 Tainted: G W syzkaller #0 [ 58.243092][ T5252] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/18/2026 [ 58.244639][ T5252] Call trace: [ 58.245188][ T5252] dump_backtrace+0x0/0x458 [ 58.245917][ T5252] show_stack+0x2c/0x3c [ 58.246645][ T5252] __dump_stack+0x30/0x40 [ 58.247395][ T5252] dump_stack_lvl+0xf4/0x15c [ 58.248201][ T5252] dump_stack+0x1c/0x5c [ 58.248911][ T5252] should_fail+0x3bc/0x514 [ 58.249603][ T5252] __should_failslab+0xbc/0x10c [ 58.250392][ T5252] should_failslab+0x10/0x28 [ 58.251096][ T5252] slab_pre_alloc_hook+0x64/0xe8 [ 58.251810][ T5252] kmem_cache_alloc_trace+0x98/0x3ec [ 58.252689][ T5252] bdi_split_work_to_wbs+0x3f4/0x77c [ 58.253554][ T5252] sync_inodes_sb+0x188/0x844 [ 58.254357][ T5252] sync_filesystem+0x160/0x218 [ 58.255159][ T5252] btrfs_remount+0x198/0x12b0 [ 58.255910][ T5252] legacy_reconfigure+0xf8/0x110 [ 58.256702][ T5252] reconfigure_super+0x1d4/0x6f4 [ 58.257533][ T5252] path_mount+0xc88/0x1008 [ 58.258238][ T5252] __arm64_sys_mount+0x514/0x5f0 [ 58.259004][ T5252] invoke_syscall+0x98/0x2b0 [ 58.259756][ T5252] el0_svc_common+0x138/0x258 [ 58.260566][ T5252] do_el0_svc+0x58/0x13c [ 58.261283][ T5252] el0_svc+0x78/0x1d0 [ 58.261952][ T5252] el0t_64_sync_handler+0xcc/0xe4 [ 58.262805][ T5252] el0t_64_sync+0x1a0/0x1a4 [ 58.439664][ T5273] BTRFS: device fsid ed167579-eb65-4e76-9a50-61ac97e9b59d devid 1 transid 8 /dev/loop0 scanned by syz-executor.0 (5273) [ 58.462296][ T5273] FAULT_INJECTION: forcing a failure. [ 58.462296][ T5273] name failslab, interval 1, probability 0, space 0, times 0 [ 58.464447][ T5273] CPU: 0 PID: 5273 Comm: syz-executor.0 Tainted: G W syzkaller #0 [ 58.465878][ T5273] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/18/2026 [ 58.467416][ T5273] Call trace: [ 58.467922][ T5273] dump_backtrace+0x0/0x458 [ 58.468691][ T5273] show_stack+0x2c/0x3c [ 58.469405][ T5273] __dump_stack+0x30/0x40 [ 58.470170][ T5273] dump_stack_lvl+0xf4/0x15c [ 58.470895][ T5273] dump_stack+0x1c/0x5c [ 58.471645][ T5273] should_fail+0x3bc/0x514 [ 58.472413][ T5273] __should_failslab+0xbc/0x10c [ 58.473256][ T5273] should_failslab+0x10/0x28 [ 58.473993][ T5273] slab_pre_alloc_hook+0x64/0xe8 [ 58.474833][ T5273] kmem_cache_alloc+0x94/0x3d4 [ 58.475646][ T5273] btrfs_alloc_path+0x5c/0x68 [ 58.476480][ T5273] __btrfs_free_extent+0x1a8/0x1abc [ 58.477360][ T5273] __btrfs_run_delayed_refs+0xbf0/0x348c [ 58.478293][ T5273] btrfs_run_delayed_refs+0x124/0x458 [ 58.479244][ T5273] btrfs_commit_transaction+0x1e0/0x3078 [ 58.480231][ T5273] btrfs_sync_fs+0x628/0xb24 [ 58.480999][ T5273] sync_filesystem+0x1a0/0x218 [ 58.481819][ T5273] btrfs_remount+0x198/0x12b0 [ 58.482570][ T5273] legacy_reconfigure+0xf8/0x110 [ 58.483410][ T5273] reconfigure_super+0x1d4/0x6f4 [ 58.484209][ T5273] path_mount+0xc88/0x1008 [ 58.484863][ T5273] __arm64_sys_mount+0x514/0x5f0 [ 58.485666][ T5273] invoke_syscall+0x98/0x2b0 [ 58.486510][ T5273] el0_svc_common+0x138/0x258 [ 58.487263][ T5273] do_el0_svc+0x58/0x13c [ 58.487931][ T5273] el0_svc+0x78/0x1d0 [ 58.488583][ T5273] el0t_64_sync_handler+0xcc/0xe4 [ 58.489367][ T5273] el0t_64_sync+0x1a0/0x1a4 [ 58.491910][ T5273] BTRFS error (device loop0): failed to run delayed ref for logical 5255168 num_bytes 4096 type 176 action 2 ref_mod 1: -12 [ 58.494189][ T5273] ------------[ cut here ]------------ [ 58.495131][ T5273] WARNING: CPU: 0 PID: 5273 at fs/btrfs/extent-tree.c:2173 btrfs_run_delayed_refs+0x3e4/0x458 [ 58.496748][ T5273] Modules linked in: [ 58.497367][ T5273] CPU: 0 PID: 5273 Comm: syz-executor.0 Tainted: G W syzkaller #0 [ 58.498712][ T5273] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/18/2026 [ 58.500343][ T5273] pstate: 62400005 (nZCv daif +PAN -UAO +TCO -DIT -SSBS BTYPE=--) [ 58.501646][ T5273] pc : btrfs_run_delayed_refs+0x3e4/0x458 [ 58.502630][ T5273] lr : btrfs_run_delayed_refs+0x3e4/0x458 [ 58.503574][ T5273] sp : ffff800021b77530 [ 58.504242][ T5273] x29: ffff800021b77540 x28: ffff0000d9d75000 x27: dfff800000000000 [ 58.505599][ T5273] x26: ffff0000d9d75024 x25: ffff0000cd9b4000 x24: 1fffe0001bcc1bd9 [ 58.506975][ T5273] x23: 1fffe0001bcc1bd9 x22: ffff0000de60dec8 x21: 00000000fffffff4 [ 58.508268][ T5273] x20: 0000000000000051 x19: ffff0000de60de70 x18: 0000000000000001 [ 58.509621][ T5273] x17: 0000000000000000 x16: ffff80001125f020 x15: 00000000ffffffff [ 58.511034][ T5273] x14: 0000000000000001 x13: 1fffe000341f05ab x12: 0000000000ff0100 [ 58.512372][ T5273] x11: 0000000000000000 x10: 0000000000000000 x9 : 2ee8550093e8b200 [ 58.513739][ T5273] x8 : 2ee8550093e8b200 x7 : 0000000000000001 x6 : 0000000000000001 [ 58.515122][ T5273] x5 : ffff800021b76e38 x4 : ffff80001437f3e0 x3 : ffff800008509220 [ 58.516509][ T5273] x2 : 0000000000000001 x1 : 0000000100000000 x0 : 0000000000000026 [ 58.517854][ T5273] Call trace: [ 58.518425][ T5273] btrfs_run_delayed_refs+0x3e4/0x458 [ 58.519389][ T5273] btrfs_commit_transaction+0x1e0/0x3078 [ 58.520366][ T5273] btrfs_sync_fs+0x628/0xb24 [ 58.521137][ T5273] sync_filesystem+0x1a0/0x218 [ 58.521928][ T5273] btrfs_remount+0x198/0x12b0 [ 58.522715][ T5273] legacy_reconfigure+0xf8/0x110 [ 58.523560][ T5273] reconfigure_super+0x1d4/0x6f4 [ 58.524434][ T5273] path_mount+0xc88/0x1008 [ 58.525167][ T5273] __arm64_sys_mount+0x514/0x5f0 [ 58.525971][ T5273] invoke_syscall+0x98/0x2b0 [ 58.526747][ T5273] el0_svc_common+0x138/0x258 [ 58.527541][ T5273] do_el0_svc+0x58/0x13c [ 58.528223][ T5273] el0_svc+0x78/0x1d0 [ 58.528829][ T5273] el0t_64_sync_handler+0xcc/0xe4 [ 58.529630][ T5273] el0t_64_sync+0x1a0/0x1a4 [ 58.530364][ T5273] irq event stamp: 79546 [ 58.531074][ T5273] hardirqs last enabled at (79545): [] __up_console_sem+0xb4/0xfc [ 58.532578][ T5273] hardirqs last disabled at (79546): [] el1_dbg+0x24/0x80 [ 58.534036][ T5273] softirqs last enabled at (79510): [] handle_softirqs+0xa40/0xbe4 [ 58.535638][ T5273] softirqs last disabled at (79463): [] __irq_exit_rcu+0x240/0x43c [ 58.537190][ T5273] ---[ end trace 7b9430bdaa3c86ca ]--- [ 58.539047][ T5273] BTRFS: error (device loop0) in btrfs_run_delayed_refs:2173: errno=-12 Out of memory [ 58.541221][ T5273] BTRFS error (device loop0): Remounting read-write after error is not allowed [ 58.730044][ T5294] BTRFS: device fsid ed167579-eb65-4e76-9a50-61ac97e9b59d devid 1 transid 8 /dev/loop0 scanned by syz-executor.0 (5294) [ 58.760023][ T5294] FAULT_INJECTION: forcing a failure. [ 58.760023][ T5294] name failslab, interval 1, probability 0, space 0, times 0 [ 58.763317][ T5294] CPU: 0 PID: 5294 Comm: syz-executor.0 Tainted: G W syzkaller #0 [ 58.764753][ T5294] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/18/2026 [ 58.766465][ T5294] Call trace: [ 58.766997][ T5294] dump_backtrace+0x0/0x458 [ 58.767720][ T5294] show_stack+0x2c/0x3c [ 58.768422][ T5294] __dump_stack+0x30/0x40 [ 58.769121][ T5294] dump_stack_lvl+0xf4/0x15c [ 58.769848][ T5294] dump_stack+0x1c/0x5c [ 58.770503][ T5294] should_fail+0x3bc/0x514 [ 58.771184][ T5294] __should_failslab+0xbc/0x10c [ 58.772003][ T5294] should_failslab+0x10/0x28 [ 58.772810][ T5294] slab_pre_alloc_hook+0x64/0xe8 [ 58.773641][ T5294] kmem_cache_alloc+0x94/0x3d4 [ 58.774470][ T5294] btrfs_alloc_path+0x5c/0x68 [ 58.775301][ T5294] __btrfs_run_delayed_refs+0xe70/0x348c [ 58.776220][ T5294] btrfs_run_delayed_refs+0x124/0x458 [ 58.777118][ T5294] btrfs_commit_transaction+0x1e0/0x3078 [ 58.778101][ T5294] btrfs_sync_fs+0x628/0xb24 [ 58.778851][ T5294] sync_filesystem+0x1a0/0x218 [ 58.779656][ T5294] btrfs_remount+0x198/0x12b0 [ 58.780410][ T5294] legacy_reconfigure+0xf8/0x110 [ 58.781201][ T5294] reconfigure_super+0x1d4/0x6f4 [ 58.781966][ T5294] path_mount+0xc88/0x1008 [ 58.782680][ T5294] __arm64_sys_mount+0x514/0x5f0 [ 58.783493][ T5294] invoke_syscall+0x98/0x2b0 [ 58.784266][ T5294] el0_svc_common+0x138/0x258 [ 58.785050][ T5294] do_el0_svc+0x58/0x13c [ 58.785738][ T5294] el0_svc+0x78/0x1d0 [ 58.786386][ T5294] el0t_64_sync_handler+0xcc/0xe4 [ 58.787212][ T5294] el0t_64_sync+0x1a0/0x1a4 [ 58.789257][ T5294] BTRFS error (device loop0): failed to run delayed ref for logical 5251072 num_bytes 4096 type 176 action 1 ref_mod 1: -12 [ 58.791573][ T5294] ------------[ cut here ]------------ [ 58.792506][ T5294] WARNING: CPU: 0 PID: 5294 at fs/btrfs/extent-tree.c:2173 btrfs_run_delayed_refs+0x3e4/0x458 [ 58.794134][ T5294] Modules linked in: [ 58.794812][ T5294] CPU: 0 PID: 5294 Comm: syz-executor.0 Tainted: G W syzkaller #0 [ 58.796222][ T5294] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/18/2026 [ 58.797729][ T5294] pstate: 62400005 (nZCv daif +PAN -UAO +TCO -DIT -SSBS BTYPE=--) [ 58.798995][ T5294] pc : btrfs_run_delayed_refs+0x3e4/0x458 [ 58.799967][ T5294] lr : btrfs_run_delayed_refs+0x3e4/0x458 [ 58.800925][ T5294] sp : ffff800021bb7530 [ 58.801624][ T5294] x29: ffff800021bb7540 x28: ffff0000d9d72000 x27: dfff800000000000 [ 58.802964][ T5294] x26: ffff0000d9d72024 x25: ffff0000c86d8000 x24: 1fffe0001bcc1bad [ 58.804195][ T5294] x23: 1fffe0001bcc1bad x22: ffff0000de60dd68 x21: 00000000fffffff4 [ 58.805563][ T5294] x20: 0000000000000051 x19: ffff0000de60dd10 x18: 0000000000000001 [ 58.806911][ T5294] x17: 0000000000000000 x16: ffff80001125f020 x15: 00000000ffffffff [ 58.808328][ T5294] x14: 0000000000000001 x13: 1fffe000341f05ab x12: 0000000000ff0100 [ 58.809718][ T5294] x11: 0000000000000000 x10: 0000000000000000 x9 : 885ada5c7d9f6c00 [ 58.811059][ T5294] x8 : 885ada5c7d9f6c00 x7 : 0000000000000001 x6 : 0000000000000001 [ 58.812452][ T5294] x5 : ffff800021bb6e38 x4 : ffff80001437f3e0 x3 : ffff800008509220 [ 58.813813][ T5294] x2 : 0000000000000001 x1 : 0000000100000000 x0 : 0000000000000026 [ 58.815188][ T5294] Call trace: [ 58.815710][ T5294] btrfs_run_delayed_refs+0x3e4/0x458 [ 58.816612][ T5294] btrfs_commit_transaction+0x1e0/0x3078 [ 58.817505][ T5294] btrfs_sync_fs+0x628/0xb24 [ 58.818224][ T5294] sync_filesystem+0x1a0/0x218 [ 58.819015][ T5294] btrfs_remount+0x198/0x12b0 [ 58.819795][ T5294] legacy_reconfigure+0xf8/0x110 [ 58.820586][ T5294] reconfigure_super+0x1d4/0x6f4 [ 58.821429][ T5294] path_mount+0xc88/0x1008 [ 58.822161][ T5294] __arm64_sys_mount+0x514/0x5f0 [ 58.823011][ T5294] invoke_syscall+0x98/0x2b0 [ 58.823742][ T5294] el0_svc_common+0x138/0x258 [ 58.824502][ T5294] do_el0_svc+0x58/0x13c [ 58.825192][ T5294] el0_svc+0x78/0x1d0 [ 58.825816][ T5294] el0t_64_sync_handler+0xcc/0xe4 [ 58.826605][ T5294] el0t_64_sync+0x1a0/0x1a4 [ 58.827344][ T5294] irq event stamp: 79634 [ 58.828038][ T5294] hardirqs last enabled at (79633): [] __up_console_sem+0xb4/0xfc [ 58.829506][ T5294] hardirqs last disabled at (79634): [] el1_dbg+0x24/0x80 [ 58.830999][ T5294] softirqs last enabled at (79610): [] handle_softirqs+0xa40/0xbe4 [ 58.832596][ T5294] softirqs last disabled at (79597): [] __irq_exit_rcu+0x240/0x43c [ 58.834119][ T5294] ---[ end trace 7b9430bdaa3c86cb ]--- [ 58.835154][ T5294] BTRFS: error (device loop0) in btrfs_run_delayed_refs:2173: errno=-12 Out of memory [ 58.836865][ T5294] BTRFS error (device loop0): Remounting read-write after error is not allowed [ 59.001654][ T5315] BTRFS: device fsid ed167579-eb65-4e76-9a50-61ac97e9b59d devid 1 transid 8 /dev/loop0 scanned by syz-executor.0 (5315) [ 59.018770][ T5315] FAULT_INJECTION: forcing a failure. [ 59.018770][ T5315] name failslab, interval 1, probability 0, space 0, times 0 [ 59.020965][ T5315] CPU: 0 PID: 5315 Comm: syz-executor.0 Tainted: G W syzkaller #0 [ 59.022479][ T5315] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/18/2026 [ 59.024154][ T5315] Call trace: [ 59.024675][ T5315] dump_backtrace+0x0/0x458 [ 59.025432][ T5315] show_stack+0x2c/0x3c [ 59.026114][ T5315] __dump_stack+0x30/0x40 [ 59.026839][ T5315] dump_stack_lvl+0xf4/0x15c [ 59.027607][ T5315] dump_stack+0x1c/0x5c [ 59.028315][ T5315] should_fail+0x3bc/0x514 [ 59.029037][ T5315] __should_failslab+0xbc/0x10c [ 59.029830][ T5315] should_failslab+0x10/0x28 [ 59.030590][ T5315] slab_pre_alloc_hook+0x64/0xe8 [ 59.031383][ T5315] kmem_cache_alloc+0x94/0x3d4 [ 59.032220][ T5315] start_transaction+0x4d0/0x13ec [ 59.033062][ T5315] btrfs_attach_transaction_barrier+0x30/0xac [ 59.034052][ T5315] btrfs_sync_fs+0x13c/0xb24 [ 59.034827][ T5315] sync_filesystem+0x1a0/0x218 [ 59.035622][ T5315] btrfs_remount+0x198/0x12b0 [ 59.036353][ T5315] legacy_reconfigure+0xf8/0x110 [ 59.037136][ T5315] reconfigure_super+0x1d4/0x6f4 [ 59.037930][ T5315] path_mount+0xc88/0x1008 [ 59.038662][ T5315] __arm64_sys_mount+0x514/0x5f0 [ 59.039507][ T5315] invoke_syscall+0x98/0x2b0 [ 59.040232][ T5315] el0_svc_common+0x138/0x258 [ 59.041037][ T5315] do_el0_svc+0x58/0x13c [ 59.041753][ T5315] el0_svc+0x78/0x1d0 [ 59.042405][ T5315] el0t_64_sync_handler+0xcc/0xe4 [ 59.043277][ T5315] el0t_64_sync+0x1a0/0x1a4 [ 59.209607][ T5336] BTRFS: device fsid ed167579-eb65-4e76-9a50-61ac97e9b59d devid 1 transid 8 /dev/loop0 scanned by syz-executor.0 (5336) [ 59.227903][ T5336] FAULT_INJECTION: forcing a failure. [ 59.227903][ T5336] name failslab, interval 1, probability 0, space 0, times 0 [ 59.230152][ T5336] CPU: 0 PID: 5336 Comm: syz-executor.0 Tainted: G W syzkaller #0 [ 59.231614][ T5336] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/18/2026 [ 59.233221][ T5336] Call trace: [ 59.233709][ T5336] dump_backtrace+0x0/0x458 [ 59.234457][ T5336] show_stack+0x2c/0x3c [ 59.235164][ T5336] __dump_stack+0x30/0x40 [ 59.235903][ T5336] dump_stack_lvl+0xf4/0x15c [ 59.236639][ T5336] dump_stack+0x1c/0x5c [ 59.237362][ T5336] should_fail+0x3bc/0x514 [ 59.238075][ T5336] __should_failslab+0xbc/0x10c [ 59.238980][ T5336] should_failslab+0x10/0x28 [ 59.239786][ T5336] slab_pre_alloc_hook+0x64/0xe8 [ 59.240571][ T5336] kmem_cache_alloc+0x94/0x3d4 [ 59.241304][ T5336] start_transaction+0x4d0/0x13ec [ 59.242161][ T5336] btrfs_attach_transaction_barrier+0x30/0xac [ 59.243214][ T5336] btrfs_sync_fs+0x13c/0xb24 [ 59.243965][ T5336] sync_filesystem+0x1a0/0x218 [ 59.244734][ T5336] btrfs_remount+0x198/0x12b0 [ 59.245570][ T5336] legacy_reconfigure+0xf8/0x110 [ 59.246409][ T5336] reconfigure_super+0x1d4/0x6f4 [ 59.247296][ T5336] path_mount+0xc88/0x1008 [ 59.248034][ T5336] __arm64_sys_mount+0x514/0x5f0 [ 59.248863][ T5336] invoke_syscall+0x98/0x2b0 [ 59.249603][ T5336] el0_svc_common+0x138/0x258 [ 59.250383][ T5336] do_el0_svc+0x58/0x13c [ 59.251020][ T5336] el0_svc+0x78/0x1d0 [ 59.251642][ T5336] el0t_64_sync_handler+0xcc/0xe4 [ 59.252448][ T5336] el0t_64_sync+0x1a0/0x1a4 [ 59.441150][ T5357] BTRFS: device fsid ed167579-eb65-4e76-9a50-61ac97e9b59d devid 1 transid 8 /dev/loop0 scanned by syz-executor.0 (5357) [ 59.459267][ T5357] FAULT_INJECTION: forcing a failure. [ 59.459267][ T5357] name failslab, interval 1, probability 0, space 0, times 0 [ 59.461549][ T5357] CPU: 1 PID: 5357 Comm: syz-executor.0 Tainted: G W syzkaller #0 [ 59.462892][ T5357] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/18/2026 [ 59.464575][ T5357] Call trace: [ 59.465128][ T5357] dump_backtrace+0x0/0x458 [ 59.465908][ T5357] show_stack+0x2c/0x3c [ 59.466630][ T5357] __dump_stack+0x30/0x40 [ 59.467330][ T5357] dump_stack_lvl+0xf4/0x15c [ 59.468053][ T5357] dump_stack+0x1c/0x5c [ 59.468689][ T5357] should_fail+0x3bc/0x514 [ 59.469443][ T5357] __should_failslab+0xbc/0x10c [ 59.470216][ T5357] should_failslab+0x10/0x28 [ 59.470961][ T5357] slab_pre_alloc_hook+0x64/0xe8 [ 59.471782][ T5357] kmem_cache_alloc+0x94/0x3d4 [ 59.472564][ T5357] btrfs_alloc_path+0x5c/0x68 [ 59.473324][ T5357] __btrfs_run_delayed_refs+0xe70/0x348c [ 59.474248][ T5357] btrfs_run_delayed_refs+0x124/0x458 [ 59.475165][ T5357] btrfs_commit_transaction+0x1e0/0x3078 [ 59.476044][ T5357] btrfs_sync_fs+0x628/0xb24 [ 59.476728][ T5357] sync_filesystem+0x1a0/0x218 [ 59.477437][ T5357] btrfs_remount+0x198/0x12b0 [ 59.478192][ T5357] legacy_reconfigure+0xf8/0x110 [ 59.478951][ T5357] reconfigure_super+0x1d4/0x6f4 [ 59.479723][ T5357] path_mount+0xc88/0x1008 [ 59.480407][ T5357] __arm64_sys_mount+0x514/0x5f0 [ 59.481162][ T5357] invoke_syscall+0x98/0x2b0 [ 59.481854][ T5357] el0_svc_common+0x138/0x258 [ 59.482581][ T5357] do_el0_svc+0x58/0x13c [ 59.483242][ T5357] el0_svc+0x78/0x1d0 [ 59.483830][ T5357] el0t_64_sync_handler+0xcc/0xe4 [ 59.484593][ T5357] el0t_64_sync+0x1a0/0x1a4 [ 59.486879][ T5357] BTRFS error (device loop0): failed to run delayed ref for logical 5246976 num_bytes 4096 type 176 action 1 ref_mod 1: -12 [ 59.489079][ T5357] ------------[ cut here ]------------ [ 59.490020][ T5357] WARNING: CPU: 1 PID: 5357 at fs/btrfs/extent-tree.c:2173 btrfs_run_delayed_refs+0x3e4/0x458 [ 59.491634][ T5357] Modules linked in: [ 59.492260][ T5357] CPU: 1 PID: 5357 Comm: syz-executor.0 Tainted: G W syzkaller #0 [ 59.493698][ T5357] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/18/2026 [ 59.495314][ T5357] pstate: 62400005 (nZCv daif +PAN -UAO +TCO -DIT -SSBS BTYPE=--) [ 59.496622][ T5357] pc : btrfs_run_delayed_refs+0x3e4/0x458 [ 59.497522][ T5357] lr : btrfs_run_delayed_refs+0x3e4/0x458 [ 59.498422][ T5357] sp : ffff800021fd7530 [ 59.499055][ T5357] x29: ffff800021fd7540 x28: ffff0000c1801000 x27: dfff800000000000 [ 59.500301][ T5357] x26: ffff0000c1801024 x25: ffff0000d63c4000 x24: 1fffe0001bcc8181 [ 59.501514][ T5357] x23: 1fffe0001bcc8181 x22: ffff0000de640c08 x21: 00000000fffffff4 [ 59.502820][ T5357] x20: 0000000000000051 x19: ffff0000de640bb0 x18: 0000000000000001 [ 59.504128][ T5357] x17: 0000000000000000 x16: ffff80001125f020 x15: 00000000ffffffff [ 59.505408][ T5357] x14: 0000000000000001 x13: 1fffe000341f47ab x12: 0000000000ff0100 [ 59.506644][ T5357] x11: 0000000000000000 x10: 0000000000000000 x9 : 5b2e556bd3596d00 [ 59.507920][ T5357] x8 : 5b2e556bd3596d00 x7 : 0000000000000001 x6 : 0000000000000001 [ 59.509252][ T5357] x5 : ffff800021fd6e38 x4 : ffff80001437f3e0 x3 : ffff800008509220 [ 59.510572][ T5357] x2 : 0000000000000001 x1 : 0000000100000000 x0 : 0000000000000026 [ 59.511830][ T5357] Call trace: [ 59.512366][ T5357] btrfs_run_delayed_refs+0x3e4/0x458 [ 59.513198][ T5357] btrfs_commit_transaction+0x1e0/0x3078 [ 59.514055][ T5357] btrfs_sync_fs+0x628/0xb24 [ 59.514812][ T5357] sync_filesystem+0x1a0/0x218 [ 59.515561][ T5357] btrfs_remount+0x198/0x12b0 [ 59.516296][ T5357] legacy_reconfigure+0xf8/0x110 [ 59.517074][ T5357] reconfigure_super+0x1d4/0x6f4 [ 59.517822][ T5357] path_mount+0xc88/0x1008 [ 59.518500][ T5357] __arm64_sys_mount+0x514/0x5f0 [ 59.519246][ T5357] invoke_syscall+0x98/0x2b0 [ 59.520028][ T5357] el0_svc_common+0x138/0x258 [ 59.520835][ T5357] do_el0_svc+0x58/0x13c [ 59.521541][ T5357] el0_svc+0x78/0x1d0 [ 59.522182][ T5357] el0t_64_sync_handler+0xcc/0xe4 [ 59.523032][ T5357] el0t_64_sync+0x1a0/0x1a4 [ 59.523788][ T5357] irq event stamp: 79298 [ 59.524485][ T5357] hardirqs last enabled at (79297): [] __up_console_sem+0xb4/0xfc [ 59.525960][ T5357] hardirqs last disabled at (79298): [] el1_dbg+0x24/0x80 [ 59.527334][ T5357] softirqs last enabled at (79260): [] handle_softirqs+0xa40/0xbe4 [ 59.528850][ T5357] softirqs last disabled at (79207): [] __irq_exit_rcu+0x240/0x43c [ 59.530450][ T5357] ---[ end trace 7b9430bdaa3c86cc ]--- [ 59.531985][ T5357] BTRFS: error (device loop0) in btrfs_run_delayed_refs:2173: errno=-12 Out of memory [ 59.533910][ T5357] BTRFS error (device loop0): Remounting read-write after error is not allowed 1970/01/01 00:00:59 executed programs: 34 [ 59.709199][ T5378] BTRFS: device fsid ed167579-eb65-4e76-9a50-61ac97e9b59d devid 1 transid 8 /dev/loop0 scanned by syz-executor.0 (5378) [ 59.728045][ T5378] FAULT_INJECTION: forcing a failure. [ 59.728045][ T5378] name failslab, interval 1, probability 0, space 0, times 0 [ 59.730233][ T5378] CPU: 1 PID: 5378 Comm: syz-executor.0 Tainted: G W syzkaller #0 [ 59.731796][ T5378] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/18/2026 [ 59.733515][ T5378] Call trace: [ 59.734052][ T5378] dump_backtrace+0x0/0x458 [ 59.734785][ T5378] show_stack+0x2c/0x3c [ 59.735497][ T5378] __dump_stack+0x30/0x40 [ 59.736237][ T5378] dump_stack_lvl+0xf4/0x15c [ 59.737022][ T5378] dump_stack+0x1c/0x5c [ 59.737710][ T5378] should_fail+0x3bc/0x514 [ 59.738431][ T5378] __should_failslab+0xbc/0x10c [ 59.739225][ T5378] should_failslab+0x10/0x28 [ 59.739959][ T5378] slab_pre_alloc_hook+0x64/0xe8 [ 59.740731][ T5378] kmem_cache_alloc+0x94/0x3d4 [ 59.741495][ T5378] btrfs_alloc_path+0x5c/0x68 [ 59.742311][ T5378] __btrfs_run_delayed_refs+0xe70/0x348c [ 59.743262][ T5378] btrfs_run_delayed_refs+0x124/0x458 [ 59.744155][ T5378] btrfs_commit_transaction+0x1e0/0x3078 [ 59.745062][ T5378] btrfs_sync_fs+0x628/0xb24 [ 59.745790][ T5378] sync_filesystem+0x1a0/0x218 [ 59.746546][ T5378] btrfs_remount+0x198/0x12b0 [ 59.747303][ T5378] legacy_reconfigure+0xf8/0x110 [ 59.748125][ T5378] reconfigure_super+0x1d4/0x6f4 [ 59.748856][ T5378] path_mount+0xc88/0x1008 [ 59.749557][ T5378] __arm64_sys_mount+0x514/0x5f0 [ 59.750373][ T5378] invoke_syscall+0x98/0x2b0 [ 59.751141][ T5378] el0_svc_common+0x138/0x258 [ 59.751880][ T5378] do_el0_svc+0x58/0x13c [ 59.752576][ T5378] el0_svc+0x78/0x1d0 [ 59.753218][ T5378] el0t_64_sync_handler+0xcc/0xe4 [ 59.754065][ T5378] el0t_64_sync+0x1a0/0x1a4 [ 59.755617][ T5378] BTRFS error (device loop0): failed to run delayed ref for logical 5246976 num_bytes 4096 type 176 action 1 ref_mod 1: -12 [ 59.757750][ T5378] ------------[ cut here ]------------ [ 59.758642][ T5378] WARNING: CPU: 1 PID: 5378 at fs/btrfs/extent-tree.c:2173 btrfs_run_delayed_refs+0x3e4/0x458 [ 59.760350][ T5378] Modules linked in: [ 59.761022][ T5378] CPU: 1 PID: 5378 Comm: syz-executor.0 Tainted: G W syzkaller #0 [ 59.762549][ T5378] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/18/2026 [ 59.764227][ T5378] pstate: 62400005 (nZCv daif +PAN -UAO +TCO -DIT -SSBS BTYPE=--) [ 59.765558][ T5378] pc : btrfs_run_delayed_refs+0x3e4/0x458 [ 59.766548][ T5378] lr : btrfs_run_delayed_refs+0x3e4/0x458 [ 59.767535][ T5378] sp : ffff800021fd7530 [ 59.768247][ T5378] x29: ffff800021fd7540 x28: ffff0000c1806000 x27: dfff800000000000 [ 59.769649][ T5378] x26: ffff0000c1806024 x25: ffff0000d63c4000 x24: 1fffe0001bcc813f [ 59.770915][ T5378] x23: 1fffe0001bcc813f x22: ffff0000de6409f8 x21: 00000000fffffff4 [ 59.772187][ T5378] x20: 0000000000000051 x19: ffff0000de6409a0 x18: 0000000000000001 [ 59.773505][ T5378] x17: 0000000000000000 x16: ffff80001125f020 x15: 00000000ffffffff [ 59.774873][ T5378] x14: 0000000000000001 x13: 1fffe000341f47ab x12: 0000000000ff0100 [ 59.776231][ T5378] x11: 0000000000000000 x10: 0000000000000000 x9 : 31040afbfd105400 [ 59.777581][ T5378] x8 : 31040afbfd105400 x7 : 0000000000000001 x6 : 0000000000000001 [ 59.778921][ T5378] x5 : ffff800021fd6e38 x4 : ffff80001437f3e0 x3 : ffff800008509220 [ 59.780275][ T5378] x2 : 0000000000000001 x1 : 0000000100000000 x0 : 0000000000000026 [ 59.781657][ T5378] Call trace: [ 59.782219][ T5378] btrfs_run_delayed_refs+0x3e4/0x458 [ 59.783152][ T5378] btrfs_commit_transaction+0x1e0/0x3078 [ 59.784182][ T5378] btrfs_sync_fs+0x628/0xb24 [ 59.784954][ T5378] sync_filesystem+0x1a0/0x218 [ 59.785783][ T5378] btrfs_remount+0x198/0x12b0 [ 59.786588][ T5378] legacy_reconfigure+0xf8/0x110 [ 59.787381][ T5378] reconfigure_super+0x1d4/0x6f4 [ 59.788258][ T5378] path_mount+0xc88/0x1008 [ 59.789033][ T5378] __arm64_sys_mount+0x514/0x5f0 [ 59.789818][ T5378] invoke_syscall+0x98/0x2b0 [ 59.790615][ T5378] el0_svc_common+0x138/0x258 [ 59.791434][ T5378] do_el0_svc+0x58/0x13c [ 59.792114][ T5378] el0_svc+0x78/0x1d0 [ 59.792736][ T5378] el0t_64_sync_handler+0xcc/0xe4 [ 59.793516][ T5378] el0t_64_sync+0x1a0/0x1a4 [ 59.794191][ T5378] irq event stamp: 79232 [ 59.794886][ T5378] hardirqs last enabled at (79231): [] __up_console_sem+0xb4/0xfc [ 59.796457][ T5378] hardirqs last disabled at (79232): [] el1_dbg+0x24/0x80 [ 59.797932][ T5378] softirqs last enabled at (79194): [] handle_softirqs+0xa40/0xbe4 [ 59.799629][ T5378] softirqs last disabled at (79145): [] __irq_exit_rcu+0x240/0x43c [ 59.801163][ T5378] ---[ end trace 7b9430bdaa3c86cd ]--- [ 59.803113][ T5378] BTRFS: error (device loop0) in btrfs_run_delayed_refs:2173: errno=-12 Out of memory [ 59.804811][ T5378] BTRFS error (device loop0): Remounting read-write after error is not allowed [ 59.998430][ T5399] BTRFS: device fsid ed167579-eb65-4e76-9a50-61ac97e9b59d devid 1 transid 8 /dev/loop0 scanned by syz-executor.0 (5399) [ 60.017489][ T5399] FAULT_INJECTION: forcing a failure. [ 60.017489][ T5399] name failslab, interval 1, probability 0, space 0, times 0 [ 60.019730][ T5399] CPU: 1 PID: 5399 Comm: syz-executor.0 Tainted: G W syzkaller #0 [ 60.021223][ T5399] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/18/2026 [ 60.022885][ T5399] Call trace: [ 60.023457][ T5399] dump_backtrace+0x0/0x458 [ 60.024220][ T5399] show_stack+0x2c/0x3c [ 60.024961][ T5399] __dump_stack+0x30/0x40 [ 60.025632][ T5399] dump_stack_lvl+0xf4/0x15c [ 60.026385][ T5399] dump_stack+0x1c/0x5c [ 60.027038][ T5399] should_fail+0x3bc/0x514 [ 60.027678][ T5399] __should_failslab+0xbc/0x10c [ 60.028428][ T5399] should_failslab+0x10/0x28 [ 60.029143][ T5399] slab_pre_alloc_hook+0x64/0xe8 [ 60.030001][ T5399] kmem_cache_alloc+0x94/0x3d4 [ 60.030777][ T5399] start_transaction+0x4d0/0x13ec [ 60.031608][ T5399] btrfs_attach_transaction_barrier+0x30/0xac [ 60.032641][ T5399] btrfs_sync_fs+0x13c/0xb24 [ 60.033376][ T5399] sync_filesystem+0x1a0/0x218 [ 60.034098][ T5399] btrfs_remount+0x198/0x12b0 [ 60.034867][ T5399] legacy_reconfigure+0xf8/0x110 [ 60.035724][ T5399] reconfigure_super+0x1d4/0x6f4 [ 60.036550][ T5399] path_mount+0xc88/0x1008 [ 60.037294][ T5399] __arm64_sys_mount+0x514/0x5f0 [ 60.038135][ T5399] invoke_syscall+0x98/0x2b0 [ 60.038894][ T5399] el0_svc_common+0x138/0x258 [ 60.039646][ T5399] do_el0_svc+0x58/0x13c [ 60.040294][ T5399] el0_svc+0x78/0x1d0 [ 60.040895][ T5399] el0t_64_sync_handler+0xcc/0xe4 [ 60.041734][ T5399] el0t_64_sync+0x1a0/0x1a4 [ 60.232335][ T5420] BTRFS: device fsid ed167579-eb65-4e76-9a50-61ac97e9b59d devid 1 transid 8 /dev/loop0 scanned by syz-executor.0 (5420) [ 60.252242][ T5420] FAULT_INJECTION: forcing a failure. [ 60.252242][ T5420] name failslab, interval 1, probability 0, space 0, times 0 [ 60.254430][ T5420] CPU: 0 PID: 5420 Comm: syz-executor.0 Tainted: G W syzkaller #0 [ 60.255895][ T5420] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/18/2026 [ 60.257530][ T5420] Call trace: [ 60.258073][ T5420] dump_backtrace+0x0/0x458 [ 60.258778][ T5420] show_stack+0x2c/0x3c [ 60.259492][ T5420] __dump_stack+0x30/0x40 [ 60.260207][ T5420] dump_stack_lvl+0xf4/0x15c [ 60.260996][ T5420] dump_stack+0x1c/0x5c [ 60.261734][ T5420] should_fail+0x3bc/0x514 [ 60.262488][ T5420] __should_failslab+0xbc/0x10c [ 60.263259][ T5420] should_failslab+0x10/0x28 [ 60.264008][ T5420] slab_pre_alloc_hook+0x64/0xe8 [ 60.264774][ T5420] kmem_cache_alloc+0x94/0x3d4 [ 60.265583][ T5420] start_transaction+0x4d0/0x13ec [ 60.266360][ T5420] btrfs_attach_transaction_barrier+0x30/0xac [ 60.267321][ T5420] btrfs_sync_fs+0x13c/0xb24 [ 60.268020][ T5420] sync_filesystem+0x1a0/0x218 [ 60.268824][ T5420] btrfs_remount+0x198/0x12b0 [ 60.269553][ T5420] legacy_reconfigure+0xf8/0x110 [ 60.270340][ T5420] reconfigure_super+0x1d4/0x6f4 [ 60.271119][ T5420] path_mount+0xc88/0x1008 [ 60.271739][ T5420] __arm64_sys_mount+0x514/0x5f0 [ 60.272424][ T5420] invoke_syscall+0x98/0x2b0 [ 60.273076][ T5420] el0_svc_common+0x138/0x258 [ 60.273825][ T5420] do_el0_svc+0x58/0x13c [ 60.274493][ T5420] el0_svc+0x78/0x1d0 [ 60.275154][ T5420] el0t_64_sync_handler+0xcc/0xe4 [ 60.275917][ T5420] el0t_64_sync+0x1a0/0x1a4 [ 60.449923][ T5441] BTRFS: device fsid ed167579-eb65-4e76-9a50-61ac97e9b59d devid 1 transid 8 /dev/loop0 scanned by syz-executor.0 (5441) [ 60.472221][ T5441] FAULT_INJECTION: forcing a failure. [ 60.472221][ T5441] name failslab, interval 1, probability 0, space 0, times 0 [ 60.474325][ T5441] CPU: 1 PID: 5441 Comm: syz-executor.0 Tainted: G W syzkaller #0 [ 60.475819][ T5441] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/18/2026 [ 60.477485][ T5441] Call trace: [ 60.477993][ T5441] dump_backtrace+0x0/0x458 [ 60.478706][ T5441] show_stack+0x2c/0x3c [ 60.479435][ T5441] __dump_stack+0x30/0x40 [ 60.480135][ T5441] dump_stack_lvl+0xf4/0x15c [ 60.480896][ T5441] dump_stack+0x1c/0x5c [ 60.481656][ T5441] should_fail+0x3bc/0x514 [ 60.482467][ T5441] __should_failslab+0xbc/0x10c [ 60.483254][ T5441] should_failslab+0x10/0x28 [ 60.483962][ T5441] slab_pre_alloc_hook+0x64/0xe8 [ 60.484887][ T5441] kmem_cache_alloc_trace+0x98/0x3ec [ 60.485704][ T5441] bdi_split_work_to_wbs+0x3f4/0x77c [ 60.486525][ T5441] sync_inodes_sb+0x188/0x844 [ 60.487235][ T5441] sync_filesystem+0x160/0x218 [ 60.487909][ T5441] btrfs_remount+0x198/0x12b0 [ 60.488619][ T5441] legacy_reconfigure+0xf8/0x110 [ 60.489330][ T5441] reconfigure_super+0x1d4/0x6f4 [ 60.490043][ T5441] path_mount+0xc88/0x1008 [ 60.490678][ T5441] __arm64_sys_mount+0x514/0x5f0 [ 60.491386][ T5441] invoke_syscall+0x98/0x2b0 [ 60.492077][ T5441] el0_svc_common+0x138/0x258 [ 60.492769][ T5441] do_el0_svc+0x58/0x13c [ 60.493397][ T5441] el0_svc+0x78/0x1d0 [ 60.493993][ T5441] el0t_64_sync_handler+0xcc/0xe4 [ 60.494755][ T5441] el0t_64_sync+0x1a0/0x1a4 [ 60.672797][ T5462] BTRFS: device fsid ed167579-eb65-4e76-9a50-61ac97e9b59d devid 1 transid 8 /dev/loop0 scanned by syz-executor.0 (5462) [ 60.676029][ T5462] btrfs_printk: 136 callbacks suppressed [ 60.676035][ T5462] BTRFS info (device loop0): using sha256 (sha256-ce) checksum algorithm [ 60.678292][ T5462] BTRFS info (device loop0): enabling auto defrag [ 60.679240][ T5462] BTRFS info (device loop0): enabling disk space caching [ 60.680427][ T5462] BTRFS info (device loop0): disabling tree log [ 60.681903][ T5462] BTRFS info (device loop0): force clearing of disk cache [ 60.683169][ T5462] BTRFS info (device loop0): force zlib compression, level 3 [ 60.684432][ T5462] BTRFS info (device loop0): disabling disk space caching [ 60.685610][ T5462] BTRFS info (device loop0): has skinny extents [ 60.697244][ T5462] BTRFS info (device loop0): enabling ssd optimizations [ 60.698937][ T5462] BTRFS info (device loop0): clearing free space tree [ 60.700135][ T5462] BTRFS info (device loop0): clearing compat-ro feature flag for FREE_SPACE_TREE (0x1) [ 60.702089][ T5462] BTRFS info (device loop0): clearing compat-ro feature flag for FREE_SPACE_TREE_VALID (0x2) [ 60.707786][ T5462] FAULT_INJECTION: forcing a failure. [ 60.707786][ T5462] name failslab, interval 1, probability 0, space 0, times 0 [ 60.710104][ T5462] CPU: 0 PID: 5462 Comm: syz-executor.0 Tainted: G W syzkaller #0 [ 60.711570][ T5462] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/18/2026 [ 60.713224][ T5462] Call trace: [ 60.713783][ T5462] dump_backtrace+0x0/0x458 [ 60.714506][ T5462] show_stack+0x2c/0x3c [ 60.715202][ T5462] __dump_stack+0x30/0x40 [ 60.715897][ T5462] dump_stack_lvl+0xf4/0x15c [ 60.716635][ T5462] dump_stack+0x1c/0x5c [ 60.717293][ T5462] should_fail+0x3bc/0x514 [ 60.717999][ T5462] __should_failslab+0xbc/0x10c [ 60.718805][ T5462] should_failslab+0x10/0x28 [ 60.719580][ T5462] slab_pre_alloc_hook+0x64/0xe8 [ 60.720366][ T5462] kmem_cache_alloc+0x94/0x3d4 [ 60.721154][ T5462] btrfs_alloc_path+0x5c/0x68 [ 60.721975][ T5462] __btrfs_free_extent+0x1a8/0x1abc [ 60.722879][ T5462] __btrfs_run_delayed_refs+0xbf0/0x348c [ 60.723877][ T5462] btrfs_run_delayed_refs+0x124/0x458 [ 60.724817][ T5462] btrfs_commit_transaction+0x1e0/0x3078 [ 60.725776][ T5462] btrfs_sync_fs+0x628/0xb24 [ 60.726626][ T5462] sync_filesystem+0x1a0/0x218 [ 60.727411][ T5462] btrfs_remount+0x198/0x12b0 [ 60.728169][ T5462] legacy_reconfigure+0xf8/0x110 [ 60.728997][ T5462] reconfigure_super+0x1d4/0x6f4 [ 60.729820][ T5462] path_mount+0xc88/0x1008 [ 60.730572][ T5462] __arm64_sys_mount+0x514/0x5f0 [ 60.731409][ T5462] invoke_syscall+0x98/0x2b0 [ 60.732163][ T5462] el0_svc_common+0x138/0x258 [ 60.732956][ T5462] do_el0_svc+0x58/0x13c [ 60.733655][ T5462] el0_svc+0x78/0x1d0 [ 60.734310][ T5462] el0t_64_sync_handler+0xcc/0xe4 [ 60.735090][ T5462] el0t_64_sync+0x1a0/0x1a4 [ 60.736961][ T5462] BTRFS error (device loop0): failed to run delayed ref for logical 5255168 num_bytes 4096 type 176 action 2 ref_mod 1: -12 [ 60.739198][ T5462] ------------[ cut here ]------------ [ 60.740198][ T5462] WARNING: CPU: 1 PID: 5462 at fs/btrfs/extent-tree.c:2173 btrfs_run_delayed_refs+0x3e4/0x458 [ 60.741859][ T5462] Modules linked in: [ 60.742562][ T5462] CPU: 1 PID: 5462 Comm: syz-executor.0 Tainted: G W syzkaller #0 [ 60.744154][ T5462] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/18/2026 [ 60.745821][ T5462] pstate: 62400005 (nZCv daif +PAN -UAO +TCO -DIT -SSBS BTYPE=--) [ 60.747115][ T5462] pc : btrfs_run_delayed_refs+0x3e4/0x458 [ 60.748103][ T5462] lr : btrfs_run_delayed_refs+0x3e4/0x458 [ 60.748983][ T5462] sp : ffff800022c47530 [ 60.749665][ T5462] x29: ffff800022c47540 x28: ffff0000c2629000 x27: dfff800000000000 [ 60.751008][ T5462] x26: ffff0000c2629024 x25: ffff0000ccb9c000 x24: 1fffe00019eac479 [ 60.752312][ T5462] x23: 1fffe00019eac479 x22: ffff0000cf5623c8 x21: 00000000fffffff4 [ 60.753633][ T5462] x20: 0000000000000051 x19: ffff0000cf562370 x18: 0000000000000001 [ 60.754973][ T5462] x17: 0000000000000000 x16: ffff80001125f020 x15: 00000000ffffffff [ 60.756221][ T5462] x14: 0000000000000001 x13: 1fffe000341f47ab x12: 0000000000ff0100 [ 60.757546][ T5462] x11: 0000000000000000 x10: 0000000000000000 x9 : 1ca50565f58f3a00 [ 60.758845][ T5462] x8 : 1ca50565f58f3a00 x7 : 0000000000000001 x6 : 0000000000000001 [ 60.760190][ T5462] x5 : ffff800022c46e38 x4 : ffff80001437f3e0 x3 : ffff800008509220 [ 60.761482][ T5462] x2 : 0000000000000001 x1 : 0000000100000000 x0 : 0000000000000026 [ 60.762793][ T5462] Call trace: [ 60.763322][ T5462] btrfs_run_delayed_refs+0x3e4/0x458 [ 60.764194][ T5462] btrfs_commit_transaction+0x1e0/0x3078 [ 60.765123][ T5462] btrfs_sync_fs+0x628/0xb24 [ 60.765833][ T5462] sync_filesystem+0x1a0/0x218 [ 60.766691][ T5462] btrfs_remount+0x198/0x12b0 [ 60.767498][ T5462] legacy_reconfigure+0xf8/0x110 [ 60.768352][ T5462] reconfigure_super+0x1d4/0x6f4 [ 60.769117][ T5462] path_mount+0xc88/0x1008 [ 60.769873][ T5462] __arm64_sys_mount+0x514/0x5f0 [ 60.770697][ T5462] invoke_syscall+0x98/0x2b0 [ 60.771483][ T5462] el0_svc_common+0x138/0x258 [ 60.772266][ T5462] do_el0_svc+0x58/0x13c [ 60.772940][ T5462] el0_svc+0x78/0x1d0 [ 60.773572][ T5462] el0t_64_sync_handler+0xcc/0xe4 [ 60.774316][ T5462] el0t_64_sync+0x1a0/0x1a4 [ 60.775068][ T5462] irq event stamp: 79722 [ 60.775788][ T5462] hardirqs last enabled at (79721): [] __up_console_sem+0xb4/0xfc [ 60.777427][ T5462] hardirqs last disabled at (79722): [] el1_dbg+0x24/0x80 [ 60.778854][ T5462] softirqs last enabled at (79690): [] handle_softirqs+0xa40/0xbe4 [ 60.780470][ T5462] softirqs last disabled at (79627): [] __irq_exit_rcu+0x240/0x43c [ 60.781945][ T5462] ---[ end trace 7b9430bdaa3c86ce ]--- [ 60.783810][ T5462] BTRFS: error (device loop0) in btrfs_run_delayed_refs:2173: errno=-12 Out of memory [ 60.785470][ T5462] BTRFS info (device loop0): forced readonly [ 60.786500][ T5462] BTRFS error (device loop0): Remounting read-write after error is not allowed [ 60.957286][ T5483] set_capacity_and_notify: 10 callbacks suppressed [ 60.957296][ T5483] loop0: detected capacity change from 0 to 32768 [ 60.961820][ T5483] BTRFS: device fsid ed167579-eb65-4e76-9a50-61ac97e9b59d devid 1 transid 8 /dev/loop0 scanned by syz-executor.0 (5483) [ 60.966659][ T5483] BTRFS info (device loop0): using sha256 (sha256-ce) checksum algorithm [ 60.968013][ T5483] BTRFS info (device loop0): enabling auto defrag [ 60.969095][ T5483] BTRFS info (device loop0): enabling disk space caching [ 60.970198][ T5483] BTRFS info (device loop0): disabling tree log [ 60.971309][ T5483] BTRFS info (device loop0): force clearing of disk cache [ 60.972410][ T5483] BTRFS info (device loop0): force zlib compression, level 3 [ 60.973587][ T5483] BTRFS info (device loop0): disabling disk space caching [ 60.974682][ T5483] BTRFS info (device loop0): has skinny extents [ 60.982129][ T5483] BTRFS info (device loop0): enabling ssd optimizations [ 60.983556][ T5483] BTRFS info (device loop0): clearing free space tree [ 60.984662][ T5483] BTRFS info (device loop0): clearing compat-ro feature flag for FREE_SPACE_TREE (0x1) [ 60.986176][ T5483] BTRFS info (device loop0): clearing compat-ro feature flag for FREE_SPACE_TREE_VALID (0x2) [ 60.992050][ T5483] FAULT_INJECTION: forcing a failure. [ 60.992050][ T5483] name failslab, interval 1, probability 0, space 0, times 0 [ 60.994058][ T5483] CPU: 1 PID: 5483 Comm: syz-executor.0 Tainted: G W syzkaller #0 [ 60.995462][ T5483] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/18/2026 [ 60.997006][ T5483] Call trace: [ 60.997520][ T5483] dump_backtrace+0x0/0x458 [ 60.998253][ T5483] show_stack+0x2c/0x3c [ 60.998891][ T5483] __dump_stack+0x30/0x40 [ 60.999560][ T5483] dump_stack_lvl+0xf4/0x15c [ 61.000273][ T5483] dump_stack+0x1c/0x5c [ 61.000932][ T5483] should_fail+0x3bc/0x514 [ 61.001633][ T5483] __should_failslab+0xbc/0x10c [ 61.002381][ T5483] should_failslab+0x10/0x28 [ 61.003132][ T5483] slab_pre_alloc_hook+0x64/0xe8 [ 61.003917][ T5483] kmem_cache_alloc+0x94/0x3d4 [ 61.004681][ T5483] btrfs_alloc_path+0x5c/0x68 [ 61.005429][ T5483] __btrfs_free_extent+0x1a8/0x1abc [ 61.006254][ T5483] __btrfs_run_delayed_refs+0xbf0/0x348c [ 61.007130][ T5483] btrfs_run_delayed_refs+0x124/0x458 [ 61.008020][ T5483] btrfs_commit_transaction+0x1e0/0x3078 [ 61.008887][ T5483] btrfs_sync_fs+0x628/0xb24 [ 61.009595][ T5483] sync_filesystem+0x1a0/0x218 [ 61.010377][ T5483] btrfs_remount+0x198/0x12b0 [ 61.011113][ T5483] legacy_reconfigure+0xf8/0x110 [ 61.011943][ T5483] reconfigure_super+0x1d4/0x6f4 [ 61.012730][ T5483] path_mount+0xc88/0x1008 [ 61.013427][ T5483] __arm64_sys_mount+0x514/0x5f0 [ 61.014203][ T5483] invoke_syscall+0x98/0x2b0 [ 61.014945][ T5483] el0_svc_common+0x138/0x258 [ 61.015690][ T5483] do_el0_svc+0x58/0x13c [ 61.016397][ T5483] el0_svc+0x78/0x1d0 [ 61.017061][ T5483] el0t_64_sync_handler+0xcc/0xe4 [ 61.017875][ T5483] el0t_64_sync+0x1a0/0x1a4 [ 61.019862][ T5483] BTRFS error (device loop0): failed to run delayed ref for logical 5255168 num_bytes 4096 type 176 action 2 ref_mod 1: -12 [ 61.021950][ T5483] ------------[ cut here ]------------ [ 61.022911][ T5483] WARNING: CPU: 1 PID: 5483 at fs/btrfs/extent-tree.c:2173 btrfs_run_delayed_refs+0x3e4/0x458 [ 61.024443][ T5483] Modules linked in: [ 61.025029][ T5483] CPU: 1 PID: 5483 Comm: syz-executor.0 Tainted: G W syzkaller #0 [ 61.026460][ T5483] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/18/2026 [ 61.028043][ T5483] pstate: 62400005 (nZCv daif +PAN -UAO +TCO -DIT -SSBS BTYPE=--) [ 61.029235][ T5483] pc : btrfs_run_delayed_refs+0x3e4/0x458 [ 61.030156][ T5483] lr : btrfs_run_delayed_refs+0x3e4/0x458 [ 61.031063][ T5483] sp : ffff800022d77530 [ 61.031728][ T5483] x29: ffff800022d77540 x28: ffff0000ce47b000 x27: dfff800000000000 [ 61.032999][ T5483] x26: ffff0000ce47b024 x25: ffff0000ccb9c000 x24: 1fffe0001bcc0b55 [ 61.034286][ T5483] x23: 1fffe0001bcc0b55 x22: ffff0000de605aa8 x21: 00000000fffffff4 [ 61.035603][ T5483] x20: 0000000000000051 x19: ffff0000de605a50 x18: 0000000000000001 [ 61.036906][ T5483] x17: 0000000000000000 x16: ffff80001125f020 x15: 00000000ffffffff [ 61.038174][ T5483] x14: 0000000000000001 x13: 1fffe000341f47ab x12: 0000000000ff0100 [ 61.039399][ T5483] x11: 0000000000000000 x10: 0000000000000000 x9 : 7d8d5f5486037600 [ 61.040676][ T5483] x8 : 7d8d5f5486037600 x7 : 0000000000000001 x6 : 0000000000000001 [ 61.041914][ T5483] x5 : ffff800022d76e38 x4 : ffff80001437f3e0 x3 : ffff800008509220 [ 61.043129][ T5483] x2 : 0000000000000001 x1 : 0000000100000000 x0 : 0000000000000026 [ 61.044338][ T5483] Call trace: [ 61.044866][ T5483] btrfs_run_delayed_refs+0x3e4/0x458 [ 61.045747][ T5483] btrfs_commit_transaction+0x1e0/0x3078 [ 61.046690][ T5483] btrfs_sync_fs+0x628/0xb24 [ 61.047413][ T5483] sync_filesystem+0x1a0/0x218 [ 61.048182][ T5483] btrfs_remount+0x198/0x12b0 [ 61.048925][ T5483] legacy_reconfigure+0xf8/0x110 [ 61.049732][ T5483] reconfigure_super+0x1d4/0x6f4 [ 61.050563][ T5483] path_mount+0xc88/0x1008 [ 61.051303][ T5483] __arm64_sys_mount+0x514/0x5f0 [ 61.052063][ T5483] invoke_syscall+0x98/0x2b0 [ 61.052804][ T5483] el0_svc_common+0x138/0x258 [ 61.053587][ T5483] do_el0_svc+0x58/0x13c [ 61.054315][ T5483] el0_svc+0x78/0x1d0 [ 61.054983][ T5483] el0t_64_sync_handler+0xcc/0xe4 [ 61.055815][ T5483] el0t_64_sync+0x1a0/0x1a4 [ 61.056556][ T5483] irq event stamp: 79468 [ 61.057257][ T5483] hardirqs last enabled at (79467): [] __up_console_sem+0xb4/0xfc [ 61.058832][ T5483] hardirqs last disabled at (79468): [] el1_dbg+0x24/0x80 [ 61.060259][ T5483] softirqs last enabled at (79448): [] handle_softirqs+0xa40/0xbe4 [ 61.061836][ T5483] softirqs last disabled at (79439): [] __irq_exit_rcu+0x240/0x43c [ 61.063305][ T5483] ---[ end trace 7b9430bdaa3c86cf ]--- [ 61.064904][ T5483] BTRFS: error (device loop0) in btrfs_run_delayed_refs:2173: errno=-12 Out of memory [ 61.066449][ T5483] BTRFS info (device loop0): forced readonly [ 61.067625][ T5483] BTRFS error (device loop0): Remounting read-write after error is not allowed [ 61.259034][ T5504] loop0: detected capacity change from 0 to 32768 [ 61.263167][ T5504] BTRFS: device fsid ed167579-eb65-4e76-9a50-61ac97e9b59d devid 1 transid 8 /dev/loop0 scanned by syz-executor.0 (5504) [ 61.267403][ T5504] BTRFS info (device loop0): using sha256 (sha256-ce) checksum algorithm [ 61.268967][ T5504] BTRFS info (device loop0): enabling auto defrag [ 61.270116][ T5504] BTRFS info (device loop0): enabling disk space caching [ 61.271395][ T5504] BTRFS info (device loop0): disabling tree log [ 61.272360][ T5504] BTRFS info (device loop0): force clearing of disk cache [ 61.273739][ T5504] BTRFS info (device loop0): force zlib compression, level 3 [ 61.275003][ T5504] BTRFS info (device loop0): disabling disk space caching [ 61.276175][ T5504] BTRFS info (device loop0): has skinny extents [ 61.284639][ T5504] BTRFS info (device loop0): enabling ssd optimizations [ 61.286249][ T5504] BTRFS info (device loop0): clearing free space tree [ 61.287435][ T5504] BTRFS info (device loop0): clearing compat-ro feature flag for FREE_SPACE_TREE (0x1) [ 61.289144][ T5504] BTRFS info (device loop0): clearing compat-ro feature flag for FREE_SPACE_TREE_VALID (0x2) [ 61.294774][ T5504] FAULT_INJECTION: forcing a failure. [ 61.294774][ T5504] name failslab, interval 1, probability 0, space 0, times 0 [ 61.296880][ T5504] CPU: 1 PID: 5504 Comm: syz-executor.0 Tainted: G W syzkaller #0 [ 61.298386][ T5504] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/18/2026 [ 61.300138][ T5504] Call trace: [ 61.300718][ T5504] dump_backtrace+0x0/0x458 [ 61.301472][ T5504] show_stack+0x2c/0x3c [ 61.302229][ T5504] __dump_stack+0x30/0x40 [ 61.302923][ T5504] dump_stack_lvl+0xf4/0x15c [ 61.303670][ T5504] dump_stack+0x1c/0x5c [ 61.304350][ T5504] should_fail+0x3bc/0x514 [ 61.305080][ T5504] __should_failslab+0xbc/0x10c [ 61.305891][ T5504] should_failslab+0x10/0x28 [ 61.306685][ T5504] slab_pre_alloc_hook+0x64/0xe8 [ 61.307545][ T5504] kmem_cache_alloc+0x94/0x3d4 [ 61.308346][ T5504] btrfs_alloc_path+0x5c/0x68 [ 61.309123][ T5504] __btrfs_free_extent+0x1a8/0x1abc [ 61.309882][ T5504] __btrfs_run_delayed_refs+0xbf0/0x348c [ 61.310796][ T5504] btrfs_run_delayed_refs+0x124/0x458 [ 61.311664][ T5504] btrfs_commit_transaction+0x1e0/0x3078 [ 61.312599][ T5504] btrfs_sync_fs+0x628/0xb24 [ 61.313307][ T5504] sync_filesystem+0x1a0/0x218 [ 61.314056][ T5504] btrfs_remount+0x198/0x12b0 [ 61.314763][ T5504] legacy_reconfigure+0xf8/0x110 [ 61.315548][ T5504] reconfigure_super+0x1d4/0x6f4 [ 61.316416][ T5504] path_mount+0xc88/0x1008 [ 61.317125][ T5504] __arm64_sys_mount+0x514/0x5f0 [ 61.317921][ T5504] invoke_syscall+0x98/0x2b0 [ 61.318667][ T5504] el0_svc_common+0x138/0x258 [ 61.319475][ T5504] do_el0_svc+0x58/0x13c [ 61.320189][ T5504] el0_svc+0x78/0x1d0 [ 61.320858][ T5504] el0t_64_sync_handler+0xcc/0xe4 [ 61.321749][ T5504] el0t_64_sync+0x1a0/0x1a4 [ 61.322767][ T5504] BTRFS error (device loop0): failed to run delayed ref for logical 5255168 num_bytes 4096 type 176 action 2 ref_mod 1: -12 [ 61.324909][ T5504] ------------[ cut here ]------------ [ 61.325890][ T5504] WARNING: CPU: 1 PID: 5504 at fs/btrfs/extent-tree.c:2173 btrfs_run_delayed_refs+0x3e4/0x458 [ 61.327557][ T5504] Modules linked in: [ 61.328244][ T5504] CPU: 1 PID: 5504 Comm: syz-executor.0 Tainted: G W syzkaller #0 [ 61.329738][ T5504] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/18/2026 [ 61.331463][ T5504] pstate: 62400005 (nZCv daif +PAN -UAO +TCO -DIT -SSBS BTYPE=--) [ 61.332701][ T5504] pc : btrfs_run_delayed_refs+0x3e4/0x458 [ 61.333666][ T5504] lr : btrfs_run_delayed_refs+0x3e4/0x458 [ 61.334671][ T5504] sp : ffff800022ea7530 [ 61.335383][ T5504] x29: ffff800022ea7540 x28: ffff0000c0b7d000 x27: dfff800000000000 [ 61.336741][ T5504] x26: ffff0000c0b7d024 x25: ffff0000ccb9c000 x24: 1fffe0001bcc0a8f [ 61.338084][ T5504] x23: 1fffe0001bcc0a8f x22: ffff0000de605478 x21: 00000000fffffff4 [ 61.339408][ T5504] x20: 0000000000000051 x19: ffff0000de605420 x18: 0000000000000001 [ 61.340641][ T5504] x17: 0000000000000000 x16: ffff80001125f020 x15: 00000000ffffffff [ 61.341888][ T5504] x14: 0000000000000001 x13: 1fffe000341f47ab x12: 0000000000ff0100 [ 61.343121][ T5504] x11: 0000000000000000 x10: 0000000000000000 x9 : 3da49c889d9b3d00 [ 61.344344][ T5504] x8 : 3da49c889d9b3d00 x7 : 0000000000000001 x6 : 0000000000000001 [ 61.345621][ T5504] x5 : ffff800022ea6e38 x4 : ffff80001437f3e0 x3 : ffff800008509220 [ 61.346941][ T5504] x2 : 0000000000000001 x1 : 0000000100000000 x0 : 0000000000000026 [ 61.348277][ T5504] Call trace: [ 61.348835][ T5504] btrfs_run_delayed_refs+0x3e4/0x458 [ 61.349748][ T5504] btrfs_commit_transaction+0x1e0/0x3078 [ 61.350694][ T5504] btrfs_sync_fs+0x628/0xb24 [ 61.351466][ T5504] sync_filesystem+0x1a0/0x218 [ 61.352212][ T5504] btrfs_remount+0x198/0x12b0 [ 61.352975][ T5504] legacy_reconfigure+0xf8/0x110 [ 61.353807][ T5504] reconfigure_super+0x1d4/0x6f4 [ 61.354639][ T5504] path_mount+0xc88/0x1008 [ 61.355295][ T5504] __arm64_sys_mount+0x514/0x5f0 [ 61.355970][ T5504] invoke_syscall+0x98/0x2b0 [ 61.356694][ T5504] el0_svc_common+0x138/0x258 [ 61.357460][ T5504] do_el0_svc+0x58/0x13c [ 61.358121][ T5504] el0_svc+0x78/0x1d0 [ 61.358786][ T5504] el0t_64_sync_handler+0xcc/0xe4 [ 61.359532][ T5504] el0t_64_sync+0x1a0/0x1a4 [ 61.360219][ T5504] irq event stamp: 79100 [ 61.360923][ T5504] hardirqs last enabled at (79099): [] __up_console_sem+0xb4/0xfc [ 61.362585][ T5504] hardirqs last disabled at (79100): [] el1_dbg+0x24/0x80 [ 61.363982][ T5504] softirqs last enabled at (79064): [] handle_softirqs+0xa40/0xbe4 [ 61.365531][ T5504] softirqs last disabled at (79041): [] __irq_exit_rcu+0x240/0x43c [ 61.367115][ T5504] ---[ end trace 7b9430bdaa3c86d0 ]--- [ 61.368275][ T5504] BTRFS: error (device loop0) in btrfs_run_delayed_refs:2173: errno=-12 Out of memory [ 61.369948][ T5504] BTRFS info (device loop0): forced readonly [ 61.371291][ T5504] BTRFS error (device loop0): Remounting read-write after error is not allowed