[ 32.161179][ T4067] device veth1_macvtap entered promiscuous mode [ 32.169698][ T4067] batman_adv: batadv0: Interface activated: batadv_slave_0 [ 32.171044][ T1605] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_batadv: link becomes ready [ 32.173618][ T1605] IPv6: ADDRCONF(NETDEV_CHANGE): macvtap0: link becomes ready [ 32.177206][ T4067] batman_adv: batadv0: Interface activated: batadv_slave_1 [ 32.178706][ T1605] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_batadv: link becomes ready [ 32.182288][ T4067] netdevsim netdevsim0 netdevsim0: set [1, 0] type 2 family 0 port 6081 - 0 [ 32.183773][ T4067] netdevsim netdevsim0 netdevsim1: set [1, 0] type 2 family 0 port 6081 - 0 [ 32.185112][ T4067] netdevsim netdevsim0 netdevsim2: set [1, 0] type 2 family 0 port 6081 - 0 [ 32.186559][ T4067] netdevsim netdevsim0 netdevsim3: set [1, 0] type 2 family 0 port 6081 - 0 [ 35.617309][ T1615] netdevsim netdevsim0 netdevsim3 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 38.005320][ T1615] netdevsim netdevsim0 netdevsim2 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 38.055567][ T1615] netdevsim netdevsim0 netdevsim1 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 38.095844][ T1615] netdevsim netdevsim0 netdevsim0 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 39.325328][ T1615] device hsr_slave_0 left promiscuous mode [ 39.351619][ T1615] device hsr_slave_1 left promiscuous mode [ 39.451947][ T1615] batman_adv: batadv0: Interface deactivated: batadv_slave_0 [ 39.453280][ T1615] batman_adv: batadv0: Removing interface: batadv_slave_0 [ 39.455158][ T1615] batman_adv: batadv0: Interface deactivated: batadv_slave_1 [ 39.456392][ T1615] batman_adv: batadv0: Removing interface: batadv_slave_1 [ 39.457800][ T1615] device bridge_slave_1 left promiscuous mode [ 39.459151][ T1615] bridge0: port 2(bridge_slave_1) entered disabled state [ 39.502743][ T1615] device bridge_slave_0 left promiscuous mode [ 39.503851][ T1615] bridge0: port 1(bridge_slave_0) entered disabled state [ 39.651526][ T1615] device veth1_macvtap left promiscuous mode [ 39.652740][ T1615] device veth0_macvtap left promiscuous mode [ 39.653863][ T1615] device veth1_vlan left promiscuous mode [ 39.654965][ T1615] device veth0_vlan left promiscuous mode [ 39.761973][ T1615] team0 (unregistering): Port device team_slave_1 removed [ 39.766459][ T1615] team0 (unregistering): Port device team_slave_0 removed [ 39.770877][ T1615] bond0 (unregistering): (slave bond_slave_1): Releasing backup interface [ 39.805779][ T1615] bond0 (unregistering): (slave bond_slave_0): Releasing backup interface [ 39.926086][ T1615] bond0 (unregistering): Released all slaves Warning: Permanently added '10.128.0.117' (ED25519) to the list of known hosts. 1970/01/01 00:00:40 ignoring optional flag "type"="gce" 1970/01/01 00:00:40 parsed 1 programs 1970/01/01 00:00:40 executed programs: 0 [ 40.440010][ T4257] chnl_net:caif_netlink_parms(): no params data found [ 40.458672][ T4257] bridge0: port 1(bridge_slave_0) entered blocking state [ 40.459979][ T4257] bridge0: port 1(bridge_slave_0) entered disabled state [ 40.461649][ T4257] device bridge_slave_0 entered promiscuous mode [ 40.463732][ T4257] bridge0: port 2(bridge_slave_1) entered blocking state [ 40.464812][ T4257] bridge0: port 2(bridge_slave_1) entered disabled state [ 40.466439][ T4257] device bridge_slave_1 entered promiscuous mode [ 40.475177][ T4257] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 40.477561][ T4257] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 40.485630][ T4257] team0: Port device team_slave_0 added [ 40.487713][ T4257] team0: Port device team_slave_1 added [ 40.495358][ T4257] batman_adv: batadv0: Adding interface: batadv_slave_0 [ 40.496402][ T4257] batman_adv: batadv0: The MTU of interface batadv_slave_0 is too small (1500) to handle the transport of batman-adv packets. Packets going over this interface will be fragmented on layer2 which could impact the performance. Setting the MTU to 1560 would solve the problem. [ 40.500451][ T4257] batman_adv: batadv0: Not using interface batadv_slave_0 (retrying later): interface not active [ 40.502861][ T4257] batman_adv: batadv0: Adding interface: batadv_slave_1 [ 40.504008][ T4257] batman_adv: batadv0: The MTU of interface batadv_slave_1 is too small (1500) to handle the transport of batman-adv packets. Packets going over this interface will be fragmented on layer2 which could impact the performance. Setting the MTU to 1560 would solve the problem. [ 40.508186][ T4257] batman_adv: batadv0: Not using interface batadv_slave_1 (retrying later): interface not active [ 40.572401][ T4257] device hsr_slave_0 entered promiscuous mode [ 40.611497][ T4257] device hsr_slave_1 entered promiscuous mode [ 41.179447][ T4257] netdevsim netdevsim0 netdevsim0: renamed from eth0 [ 41.194120][ T4257] netdevsim netdevsim0 netdevsim1: renamed from eth1 [ 41.262522][ T4257] netdevsim netdevsim0 netdevsim2: renamed from eth2 [ 41.303320][ T4257] netdevsim netdevsim0 netdevsim3: renamed from eth3 [ 41.377600][ T4257] 8021q: adding VLAN 0 to HW filter on device bond0 [ 41.383047][ T148] IPv6: ADDRCONF(NETDEV_CHANGE): veth1: link becomes ready [ 41.384920][ T148] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 41.387818][ T4257] 8021q: adding VLAN 0 to HW filter on device team0 [ 41.390397][ T136] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bridge: link becomes ready [ 41.394378][ T136] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 41.395844][ T136] bridge0: port 1(bridge_slave_0) entered blocking state [ 41.397045][ T136] bridge0: port 1(bridge_slave_0) entered forwarding state [ 41.400857][ T136] IPv6: ADDRCONF(NETDEV_CHANGE): bridge0: link becomes ready [ 41.404125][ T136] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bridge: link becomes ready [ 41.406139][ T136] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 41.407873][ T136] bridge0: port 2(bridge_slave_1) entered blocking state [ 41.409081][ T136] bridge0: port 2(bridge_slave_1) entered forwarding state [ 41.420119][ T4257] hsr0: Slave A (hsr_slave_0) is not up; please bring it up to get a fully working HSR network [ 41.422982][ T4257] hsr0: Slave B (hsr_slave_1) is not up; please bring it up to get a fully working HSR network [ 41.431480][ T136] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bond: link becomes ready [ 41.433302][ T136] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bond: link becomes ready [ 41.435047][ T136] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_team: link becomes ready [ 41.437490][ T136] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 41.439163][ T136] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_team: link becomes ready [ 41.440754][ T136] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 41.452289][ T136] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_hsr: link becomes ready [ 41.453996][ T136] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 41.455747][ T136] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_hsr: link becomes ready [ 41.462337][ T136] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 41.463959][ T136] IPv6: ADDRCONF(NETDEV_CHANGE): team0: link becomes ready [ 41.471677][ T136] IPv6: ADDRCONF(NETDEV_CHANGE): hsr0: link becomes ready [ 41.532588][ T1615] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan1: link becomes ready [ 41.534051][ T1615] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan0: link becomes ready [ 41.538219][ T4257] 8021q: adding VLAN 0 to HW filter on device batadv0 [ 41.546321][ T1615] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_virt_wifi: link becomes ready [ 41.547999][ T1615] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_virt_wifi: link becomes ready [ 41.557052][ T1615] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_vlan: link becomes ready [ 41.558756][ T1615] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_vlan: link becomes ready [ 41.560517][ T1615] IPv6: ADDRCONF(NETDEV_CHANGE): vlan0: link becomes ready [ 41.562527][ T1615] IPv6: ADDRCONF(NETDEV_CHANGE): vlan1: link becomes ready [ 41.564910][ T4257] device veth0_vlan entered promiscuous mode [ 41.568444][ T4257] device veth1_vlan entered promiscuous mode [ 41.576866][ T1615] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan0: link becomes ready [ 41.578382][ T1615] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan1: link becomes ready [ 41.579993][ T1615] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_macvtap: link becomes ready [ 41.582125][ T1615] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_macvtap: link becomes ready [ 41.584711][ T4257] device veth0_macvtap entered promiscuous mode [ 41.587039][ T4257] device veth1_macvtap entered promiscuous mode [ 41.593972][ T4257] batman_adv: batadv0: Interface activated: batadv_slave_0 [ 41.595158][ T1605] IPv6: ADDRCONF(NETDEV_CHANGE): macvtap0: link becomes ready [ 41.596800][ T1605] IPv6: ADDRCONF(NETDEV_CHANGE): macsec0: link becomes ready [ 41.598355][ T1605] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_0: link becomes ready [ 41.599958][ T1605] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_batadv: link becomes ready [ 41.603553][ T4257] batman_adv: batadv0: Interface activated: batadv_slave_1 [ 41.605802][ T4257] netdevsim netdevsim0 netdevsim0: set [1, 0] type 2 family 0 port 6081 - 0 [ 41.607251][ T4257] netdevsim netdevsim0 netdevsim1: set [1, 0] type 2 family 0 port 6081 - 0 [ 41.608651][ T4257] netdevsim netdevsim0 netdevsim2: set [1, 0] type 2 family 0 port 6081 - 0 [ 41.610042][ T4257] netdevsim netdevsim0 netdevsim3: set [1, 0] type 2 family 0 port 6081 - 0 [ 41.613754][ T1605] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_1: link becomes ready [ 41.615503][ T1605] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_batadv: link becomes ready [ 41.759513][ T4375] loop0: detected capacity change from 0 to 32768 [ 41.764617][ T4375] BTRFS: device fsid 24c7a497-3402-47dd-bef8-82358f5f30e0 devid 1 transid 8 /dev/loop0 scanned by syz-executor.0 (4375) [ 41.770575][ T4375] BTRFS info (device loop0): using crc32c (crc32c-generic) checksum algorithm [ 41.773291][ T4375] BTRFS info (device loop0): using free space tree [ 41.774392][ T4375] BTRFS info (device loop0): has skinny extents [ 41.785046][ T4375] BTRFS info (device loop0): enabling ssd optimizations [ 41.793960][ T4375] FAULT_INJECTION: forcing a failure. [ 41.793960][ T4375] name failslab, interval 1, probability 0, space 0, times 1 [ 41.796064][ T4375] CPU: 0 PID: 4375 Comm: syz-executor.0 Not tainted syzkaller #0 [ 41.797247][ T4375] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/02/2026 [ 41.798746][ T4375] Call trace: [ 41.799252][ T4375] dump_backtrace+0x0/0x458 [ 41.799969][ T4375] show_stack+0x2c/0x3c [ 41.800619][ T4375] __dump_stack+0x30/0x40 [ 41.801312][ T4375] dump_stack_lvl+0xf4/0x15c [ 41.802080][ T4375] dump_stack+0x1c/0x5c [ 41.802795][ T4375] should_fail+0x3c8/0x520 [ 41.803550][ T4375] __should_failslab+0xbc/0x10c [ 41.804410][ T4375] should_failslab+0x10/0x28 [ 41.805199][ T4375] slab_pre_alloc_hook+0x64/0xe8 [ 41.806024][ T4375] kmem_cache_alloc+0x94/0x3d8 [ 41.806990][ T4375] btrfs_add_delayed_data_ref+0x174/0xd64 [ 41.808096][ T4375] btrfs_alloc_reserved_file_extent+0x1a8/0x2c8 [ 41.809321][ T4375] btrfs_insert_replace_extent+0x818/0x9b0 [ 41.810319][ T4375] btrfs_replace_file_extents+0x8a8/0x1284 [ 41.811456][ T4375] __btrfs_prealloc_file_range+0x35c/0xb80 [ 41.812486][ T4375] btrfs_prealloc_file_range+0x60/0x7c [ 41.813474][ T4375] btrfs_fallocate+0xcb0/0x1720 [ 41.814315][ T4375] vfs_fallocate+0x4a4/0x5fc [ 41.815110][ T4375] ioctl_preallocate+0x234/0x2d4 [ 41.815932][ T4375] do_vfs_ioctl+0x1aa8/0x2404 [ 41.816680][ T4375] __arm64_sys_ioctl+0xe4/0x1c8 [ 41.817482][ T4375] invoke_syscall+0x98/0x28c [ 41.818274][ T4375] el0_svc_common+0x13c/0x258 [ 41.819109][ T4375] do_el0_svc+0x5c/0x140 [ 41.819850][ T4375] el0_svc+0x78/0x1d0 [ 41.820505][ T4375] el0t_64_sync_handler+0xcc/0xe4 [ 41.821315][ T4375] el0t_64_sync+0x1a0/0x1a4 [ 41.825563][ T4375] ------------[ cut here ]------------ [ 41.826555][ T4375] WARNING: CPU: 0 PID: 4375 at fs/btrfs/file.c:2983 btrfs_replace_file_extents+0xd18/0x1284 [ 41.828294][ T4375] Modules linked in: [ 41.828960][ T4375] CPU: 0 PID: 4375 Comm: syz-executor.0 Not tainted syzkaller #0 [ 41.830164][ T4375] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/02/2026 [ 41.831836][ T4375] pstate: 62400005 (nZCv daif +PAN -UAO +TCO -DIT -SSBS BTYPE=--) [ 41.833242][ T4375] pc : btrfs_replace_file_extents+0xd18/0x1284 [ 41.834332][ T4375] lr : btrfs_replace_file_extents+0xd18/0x1284 [ 41.835444][ T4375] sp : ffff80001f7f72a0 [ 41.836191][ T4375] x29: ffff80001f7f73c0 x28: 00000000fffffff4 x27: ffff80001f7f7560 [ 41.837584][ T4375] x26: 0000000000000000 x25: dfff800000000000 x24: ffff700003efee64 [ 41.838944][ T4375] x23: ffff0000e25093a0 x22: ffff0000dd7db160 x21: ffff0000d75da900 [ 41.840379][ T4375] x20: 1fffe0001bafb637 x19: ffff0000dd7db1b8 x18: 0000000000000000 [ 41.841718][ T4375] x17: 0000000000000000 x16: ffff80001135f958 x15: 0000000000000000 [ 41.843084][ T4375] x14: 0000000000000001 x13: 1fffe000341cc7ab x12: 0000000000000000 [ 41.844490][ T4375] x11: ff80800008300a38 x10: 0000000000000000 x9 : f4cc29b1d582fd00 [ 41.845952][ T4375] x8 : f4cc29b1d582fd00 x7 : 0000000000000001 x6 : 0000000000000001 [ 41.847322][ T4375] x5 : ffff80001f7f6bb8 x4 : ffff80001447f520 x3 : ffff80000850fcd0 [ 41.848724][ T4375] x2 : 0000000000000001 x1 : 0000000100000000 x0 : 0000000000000026 [ 41.850162][ T4375] Call trace: [ 41.850700][ T4375] btrfs_replace_file_extents+0xd18/0x1284 [ 41.851656][ T4375] __btrfs_prealloc_file_range+0x35c/0xb80 [ 41.852657][ T4375] btrfs_prealloc_file_range+0x60/0x7c [ 41.853530][ T4375] btrfs_fallocate+0xcb0/0x1720 [ 41.854414][ T4375] vfs_fallocate+0x4a4/0x5fc [ 41.855234][ T4375] ioctl_preallocate+0x234/0x2d4 [ 41.856080][ T4375] do_vfs_ioctl+0x1aa8/0x2404 [ 41.856900][ T4375] __arm64_sys_ioctl+0xe4/0x1c8 [ 41.857732][ T4375] invoke_syscall+0x98/0x28c [ 41.858513][ T4375] el0_svc_common+0x13c/0x258 [ 41.859317][ T4375] do_el0_svc+0x5c/0x140 [ 41.860056][ T4375] el0_svc+0x78/0x1d0 [ 41.860753][ T4375] el0t_64_sync_handler+0xcc/0xe4 [ 41.861609][ T4375] el0t_64_sync+0x1a0/0x1a4 [ 41.862396][ T4375] irq event stamp: 82150 [ 41.863126][ T4375] hardirqs last enabled at (82149): [] __up_console_sem+0xb4/0xfc [ 41.864749][ T4375] hardirqs last disabled at (82150): [] el1_dbg+0x24/0x80 [ 41.866188][ T4375] softirqs last enabled at (82130): [] handle_softirqs+0xa70/0xc14 [ 41.867846][ T4375] softirqs last disabled at (82091): [] __irq_exit_rcu+0x240/0x434 [ 41.869421][ T4375] ---[ end trace b71af0a6ec9a2cdf ]--- [ 41.872572][ T4375] BTRFS: error (device loop0) in btrfs_replace_file_extents:2983: errno=-12 Out of memory [ 41.874825][ T4375] BTRFS info (device loop0): forced readonly [ 42.090498][ T4435] loop0: detected capacity change from 0 to 32768 [ 42.096110][ T4435] BTRFS: device fsid 24c7a497-3402-47dd-bef8-82358f5f30e0 devid 1 transid 8 /dev/loop0 scanned by syz-executor.0 (4435) [ 42.101262][ T4435] BTRFS info (device loop0): using crc32c (crc32c-generic) checksum algorithm [ 42.104091][ T4435] BTRFS info (device loop0): using free space tree [ 42.105349][ T4435] BTRFS info (device loop0): has skinny extents [ 42.168542][ T4435] BTRFS info (device loop0): enabling ssd optimizations [ 42.184675][ T4435] FAULT_INJECTION: forcing a failure. [ 42.184675][ T4435] name failslab, interval 1, probability 0, space 0, times 0 [ 42.186788][ T4435] CPU: 0 PID: 4435 Comm: syz-executor.0 Tainted: G W syzkaller #0 [ 42.188297][ T4435] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/02/2026 [ 42.189923][ T4435] Call trace: [ 42.190447][ T4435] dump_backtrace+0x0/0x458 [ 42.191193][ T4435] show_stack+0x2c/0x3c [ 42.191939][ T4435] __dump_stack+0x30/0x40 [ 42.192677][ T4435] dump_stack_lvl+0xf4/0x15c [ 42.193428][ T4435] dump_stack+0x1c/0x5c [ 42.194149][ T4435] should_fail+0x3c8/0x520 [ 42.194866][ T4435] __should_failslab+0xbc/0x10c [ 42.195694][ T4435] should_failslab+0x10/0x28 [ 42.196419][ T4435] slab_pre_alloc_hook+0x64/0xe8 [ 42.197403][ T4435] kmem_cache_alloc+0x94/0x3d8 [ 42.198345][ T4435] btrfs_add_delayed_data_ref+0x174/0xd64 [ 42.199395][ T4435] btrfs_alloc_reserved_file_extent+0x1a8/0x2c8 [ 42.200636][ T4435] btrfs_insert_replace_extent+0x818/0x9b0 [ 42.201749][ T4435] btrfs_replace_file_extents+0x8a8/0x1284 [ 42.202853][ T4435] __btrfs_prealloc_file_range+0x35c/0xb80 [ 42.203927][ T4435] btrfs_prealloc_file_range+0x60/0x7c [ 42.204899][ T4435] btrfs_fallocate+0xcb0/0x1720 [ 42.205758][ T4435] vfs_fallocate+0x4a4/0x5fc [ 42.206586][ T4435] ioctl_preallocate+0x234/0x2d4 [ 42.207486][ T4435] do_vfs_ioctl+0x1aa8/0x2404 [ 42.208338][ T4435] __arm64_sys_ioctl+0xe4/0x1c8 [ 42.209210][ T4435] invoke_syscall+0x98/0x28c [ 42.210035][ T4435] el0_svc_common+0x13c/0x258 [ 42.210810][ T4435] do_el0_svc+0x5c/0x140 [ 42.211513][ T4435] el0_svc+0x78/0x1d0 [ 42.212197][ T4435] el0t_64_sync_handler+0xcc/0xe4 [ 42.213012][ T4435] el0t_64_sync+0x1a0/0x1a4 [ 42.231200][ T4435] ------------[ cut here ]------------ [ 42.233452][ T4435] WARNING: CPU: 0 PID: 4435 at fs/btrfs/file.c:2983 btrfs_replace_file_extents+0xd18/0x1284 [ 42.235102][ T4435] Modules linked in: [ 42.235869][ T4435] CPU: 0 PID: 4435 Comm: syz-executor.0 Tainted: G W syzkaller #0 [ 42.237499][ T4435] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/02/2026 [ 42.239262][ T4435] pstate: 62400005 (nZCv daif +PAN -UAO +TCO -DIT -SSBS BTYPE=--) [ 42.240633][ T4435] pc : btrfs_replace_file_extents+0xd18/0x1284 [ 42.241721][ T4435] lr : btrfs_replace_file_extents+0xd18/0x1284 [ 42.242764][ T4435] sp : ffff80001fd272a0 [ 42.243458][ T4435] x29: ffff80001fd273c0 x28: 00000000fffffff4 x27: ffff80001fd27560 [ 42.245033][ T4435] x26: 0000000000000000 x25: dfff800000000000 x24: ffff700003fa4e64 [ 42.246505][ T4435] x23: ffff0000e250b110 x22: ffff0000dd7db2c0 x21: ffff0000cbde9e00 [ 42.248118][ T4435] x20: 1fffe0001bafb663 x19: ffff0000dd7db318 x18: 0000000000000000 [ 42.249612][ T4435] x17: 0000000000000000 x16: ffff80001135f958 x15: 0000000000000000 [ 42.251146][ T4435] x14: 0000000000000001 x13: 1fffe000341cc7ab x12: 0000000000000000 [ 42.252557][ T4435] x11: ff80800008300a38 x10: 0000000000000000 x9 : da1eb2e50eada800 [ 42.253910][ T4435] x8 : da1eb2e50eada800 x7 : 0000000000000001 x6 : 0000000000000001 [ 42.255503][ T4435] x5 : ffff80001fd26bb8 x4 : ffff80001447f520 x3 : ffff80000850fcd0 [ 42.256895][ T4435] x2 : 0000000000000001 x1 : 0000000100000000 x0 : 0000000000000026 [ 42.258242][ T4435] Call trace: [ 42.258788][ T4435] btrfs_replace_file_extents+0xd18/0x1284 [ 42.259772][ T4435] __btrfs_prealloc_file_range+0x35c/0xb80 [ 42.260934][ T4435] btrfs_prealloc_file_range+0x60/0x7c [ 42.261906][ T4435] btrfs_fallocate+0xcb0/0x1720 [ 42.262749][ T4435] vfs_fallocate+0x4a4/0x5fc [ 42.263601][ T4435] ioctl_preallocate+0x234/0x2d4 [ 42.264422][ T4435] do_vfs_ioctl+0x1aa8/0x2404 [ 42.265179][ T4435] __arm64_sys_ioctl+0xe4/0x1c8 [ 42.265980][ T4435] invoke_syscall+0x98/0x28c [ 42.266737][ T4435] el0_svc_common+0x13c/0x258 [ 42.267497][ T4435] do_el0_svc+0x5c/0x140 [ 42.268257][ T4435] el0_svc+0x78/0x1d0 [ 42.268930][ T4435] el0t_64_sync_handler+0xcc/0xe4 [ 42.269771][ T4435] el0t_64_sync+0x1a0/0x1a4 [ 42.270527][ T4435] irq event stamp: 81686 [ 42.271231][ T4435] hardirqs last enabled at (81685): [] __up_console_sem+0xb4/0xfc [ 42.272804][ T4435] hardirqs last disabled at (81686): [] el1_dbg+0x24/0x80 [ 42.274251][ T4435] softirqs last enabled at (81674): [] handle_softirqs+0xa70/0xc14 [ 42.275875][ T4435] softirqs last disabled at (81511): [] __irq_exit_rcu+0x240/0x434 [ 42.277458][ T4435] ---[ end trace b71af0a6ec9a2ce0 ]--- [ 42.287473][ T4435] BTRFS: error (device loop0) in btrfs_replace_file_extents:2983: errno=-12 Out of memory [ 42.289181][ T4435] BTRFS info (device loop0): forced readonly [ 42.412146][ T21] Bluetooth: hci0: command 0x0409 tx timeout [ 42.482715][ T4497] loop0: detected capacity change from 0 to 32768 [ 42.492374][ T4497] BTRFS: device fsid 24c7a497-3402-47dd-bef8-82358f5f30e0 devid 1 transid 8 /dev/loop0 scanned by syz-executor.0 (4497) [ 42.499422][ T4497] BTRFS info (device loop0): using crc32c (crc32c-generic) checksum algorithm [ 42.511564][ T4497] BTRFS info (device loop0): using free space tree [ 42.512822][ T4497] BTRFS info (device loop0): has skinny extents [ 42.566426][ T4497] BTRFS info (device loop0): enabling ssd optimizations [ 42.576562][ T4497] FAULT_INJECTION: forcing a failure. [ 42.576562][ T4497] name fail_page_alloc, interval 1, probability 0, space 0, times 1 [ 42.581460][ T4497] CPU: 0 PID: 4497 Comm: syz-executor.0 Tainted: G W syzkaller #0 [ 42.583116][ T4497] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/02/2026 [ 42.585062][ T4497] Call trace: [ 42.585688][ T4497] dump_backtrace+0x0/0x458 [ 42.586552][ T4497] show_stack+0x2c/0x3c [ 42.587313][ T4497] __dump_stack+0x30/0x40 [ 42.588108][ T4497] dump_stack_lvl+0xf4/0x15c [ 42.588954][ T4497] dump_stack+0x1c/0x5c [ 42.589697][ T4497] should_fail+0x3c8/0x520 [ 42.590448][ T4497] should_fail_alloc_page+0x74/0xa8 [ 42.591333][ T4497] prepare_alloc_pages+0x160/0x460 [ 42.592182][ T4497] __alloc_pages+0x108/0x474 [ 42.592948][ T4497] alloc_pages+0x34c/0x5c0 [ 42.593680][ T4497] new_slab+0xdc/0x53c [ 42.594330][ T4497] ___slab_alloc+0x6ac/0xd84 [ 42.595106][ T4497] __slab_alloc+0x68/0xc0 [ 42.595806][ T4497] kmem_cache_alloc+0x2a8/0x3d8 [ 42.596600][ T4497] btrfs_add_delayed_data_ref+0x174/0xd64 [ 42.597534][ T4497] btrfs_alloc_reserved_file_extent+0x1a8/0x2c8 [ 42.598555][ T4497] btrfs_insert_replace_extent+0x818/0x9b0 [ 42.599487][ T4497] btrfs_replace_file_extents+0x8a8/0x1284 [ 42.600413][ T4497] __btrfs_prealloc_file_range+0x35c/0xb80 [ 42.601371][ T4497] btrfs_prealloc_file_range+0x60/0x7c [ 42.602299][ T4497] btrfs_fallocate+0xcb0/0x1720 [ 42.603129][ T4497] vfs_fallocate+0x4a4/0x5fc [ 42.603932][ T4497] ioctl_preallocate+0x234/0x2d4 [ 42.604758][ T4497] do_vfs_ioctl+0x1aa8/0x2404 [ 42.605525][ T4497] __arm64_sys_ioctl+0xe4/0x1c8 [ 42.606380][ T4497] invoke_syscall+0x98/0x28c [ 42.607175][ T4497] el0_svc_common+0x13c/0x258 [ 42.607943][ T4497] do_el0_svc+0x5c/0x140 [ 42.608648][ T4497] el0_svc+0x78/0x1d0 [ 42.609329][ T4497] el0t_64_sync_handler+0xcc/0xe4 [ 42.610154][ T4497] el0t_64_sync+0x1a0/0x1a4 [ 42.843072][ T4570] loop0: detected capacity change from 0 to 32768 [ 42.846816][ T4570] BTRFS: device fsid 24c7a497-3402-47dd-bef8-82358f5f30e0 devid 1 transid 8 /dev/loop0 scanned by syz-executor.0 (4570) [ 42.852400][ T4570] BTRFS info (device loop0): using crc32c (crc32c-generic) checksum algorithm [ 42.853889][ T4570] BTRFS info (device loop0): using free space tree [ 42.855061][ T4570] BTRFS info (device loop0): has skinny extents [ 42.864086][ T4570] BTRFS info (device loop0): enabling ssd optimizations [ 42.867502][ T4570] FAULT_INJECTION: forcing a failure. [ 42.867502][ T4570] name failslab, interval 1, probability 0, space 0, times 0 [ 42.869837][ T4570] CPU: 1 PID: 4570 Comm: syz-executor.0 Tainted: G W syzkaller #0 [ 42.871217][ T4570] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/02/2026 [ 42.872876][ T4570] Call trace: [ 42.873422][ T4570] dump_backtrace+0x0/0x458 [ 42.874163][ T4570] show_stack+0x2c/0x3c [ 42.874854][ T4570] __dump_stack+0x30/0x40 [ 42.875590][ T4570] dump_stack_lvl+0xf4/0x15c [ 42.876365][ T4570] dump_stack+0x1c/0x5c [ 42.877057][ T4570] should_fail+0x3c8/0x520 [ 42.877782][ T4570] __should_failslab+0xbc/0x10c [ 42.878619][ T4570] should_failslab+0x10/0x28 [ 42.879384][ T4570] slab_pre_alloc_hook+0x64/0xe8 [ 42.880217][ T4570] kmem_cache_alloc+0x94/0x3d8 [ 42.881176][ T4570] btrfs_add_delayed_data_ref+0x3f0/0xd64 [ 42.882356][ T4570] btrfs_alloc_reserved_file_extent+0x1a8/0x2c8 [ 42.883624][ T4570] btrfs_insert_replace_extent+0x818/0x9b0 [ 42.884806][ T4570] btrfs_replace_file_extents+0x8a8/0x1284 [ 42.886023][ T4570] __btrfs_prealloc_file_range+0x35c/0xb80 [ 42.887198][ T4570] btrfs_prealloc_file_range+0x60/0x7c [ 42.888303][ T4570] btrfs_fallocate+0xcb0/0x1720 [ 42.889252][ T4570] vfs_fallocate+0x4a4/0x5fc [ 42.890086][ T4570] ioctl_preallocate+0x234/0x2d4 [ 42.890885][ T4570] do_vfs_ioctl+0x1aa8/0x2404 [ 42.891679][ T4570] __arm64_sys_ioctl+0xe4/0x1c8 [ 42.892473][ T4570] invoke_syscall+0x98/0x28c [ 42.893223][ T4570] el0_svc_common+0x13c/0x258 [ 42.894004][ T4570] do_el0_svc+0x5c/0x140 [ 42.894739][ T4570] el0_svc+0x78/0x1d0 [ 42.895420][ T4570] el0t_64_sync_handler+0xcc/0xe4 [ 42.896279][ T4570] el0t_64_sync+0x1a0/0x1a4 [ 42.898190][ T4570] ------------[ cut here ]------------ [ 42.899213][ T4570] WARNING: CPU: 1 PID: 4570 at fs/btrfs/file.c:2983 btrfs_replace_file_extents+0xd18/0x1284 [ 42.900888][ T4570] Modules linked in: [ 42.901675][ T4570] CPU: 1 PID: 4570 Comm: syz-executor.0 Tainted: G W syzkaller #0 [ 42.903353][ T4570] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/02/2026 [ 42.905201][ T4570] pstate: 62400005 (nZCv daif +PAN -UAO +TCO -DIT -SSBS BTYPE=--) [ 42.906504][ T4570] pc : btrfs_replace_file_extents+0xd18/0x1284 [ 42.907506][ T4570] lr : btrfs_replace_file_extents+0xd18/0x1284 [ 42.908524][ T4570] sp : ffff80001f8572a0 [ 42.909195][ T4570] x29: ffff80001f8573c0 x28: 00000000fffffff4 x27: ffff80001f857560 [ 42.910478][ T4570] x26: 0000000000000000 x25: dfff800000000000 x24: ffff700003f0ae64 [ 42.911851][ T4570] x23: ffff0000de911d70 x22: ffff0000de9e6160 x21: ffff0000cddd3d00 [ 42.913202][ T4570] x20: 1fffe0001bd3cc37 x19: ffff0000de9e61b8 x18: 0000000000000000 [ 42.914583][ T4570] x17: 0000000000000000 x16: ffff80001135f958 x15: 0000000000000000 [ 42.915935][ T4570] x14: 0000000000000001 x13: 1fffe000341d09ab x12: 0000000000000000 [ 42.917313][ T4570] x11: ff80800008300a38 x10: 0000000000000000 x9 : 718dae905d004600 [ 42.918697][ T4570] x8 : 718dae905d004600 x7 : 0000000000000001 x6 : 0000000000000001 [ 42.919996][ T4570] x5 : ffff80001f856bb8 x4 : ffff80001447f520 x3 : ffff80000850fcd0 [ 42.921405][ T4570] x2 : 0000000000000001 x1 : 0000000100000000 x0 : 0000000000000026 [ 42.922783][ T4570] Call trace: [ 42.923354][ T4570] btrfs_replace_file_extents+0xd18/0x1284 [ 42.924362][ T4570] __btrfs_prealloc_file_range+0x35c/0xb80 [ 42.925356][ T4570] btrfs_prealloc_file_range+0x60/0x7c [ 42.926266][ T4570] btrfs_fallocate+0xcb0/0x1720 [ 42.927102][ T4570] vfs_fallocate+0x4a4/0x5fc [ 42.927868][ T4570] ioctl_preallocate+0x234/0x2d4 [ 42.928677][ T4570] do_vfs_ioctl+0x1aa8/0x2404 [ 42.929438][ T4570] __arm64_sys_ioctl+0xe4/0x1c8 [ 42.930257][ T4570] invoke_syscall+0x98/0x28c [ 42.931050][ T4570] el0_svc_common+0x13c/0x258 [ 42.931895][ T4570] do_el0_svc+0x5c/0x140 [ 42.932570][ T4570] el0_svc+0x78/0x1d0 [ 42.933249][ T4570] el0t_64_sync_handler+0xcc/0xe4 [ 42.934080][ T4570] el0t_64_sync+0x1a0/0x1a4 [ 42.934813][ T4570] irq event stamp: 81702 [ 42.935500][ T4570] hardirqs last enabled at (81701): [] __up_console_sem+0xb4/0xfc [ 42.937086][ T4570] hardirqs last disabled at (81702): [] el1_dbg+0x24/0x80 [ 42.938511][ T4570] softirqs last enabled at (81676): [] handle_softirqs+0xa70/0xc14 [ 42.940154][ T4570] softirqs last disabled at (81659): [] __irq_exit_rcu+0x240/0x434 [ 42.941780][ T4570] ---[ end trace b71af0a6ec9a2ce1 ]--- [ 42.944984][ T4570] BTRFS: error (device loop0) in btrfs_replace_file_extents:2983: errno=-12 Out of memory [ 42.947187][ T4570] BTRFS info (device loop0): forced readonly [ 43.138441][ T4596] loop0: detected capacity change from 0 to 32768 [ 43.141092][ T4596] BTRFS: device fsid 24c7a497-3402-47dd-bef8-82358f5f30e0 devid 1 transid 8 /dev/loop0 scanned by syz-executor.0 (4596) [ 43.144860][ T4596] BTRFS info (device loop0): using crc32c (crc32c-generic) checksum algorithm [ 43.146235][ T4596] BTRFS info (device loop0): using free space tree [ 43.147318][ T4596] BTRFS info (device loop0): has skinny extents [ 43.158460][ T4596] BTRFS info (device loop0): enabling ssd optimizations [ 43.162366][ T4596] FAULT_INJECTION: forcing a failure. [ 43.162366][ T4596] name failslab, interval 1, probability 0, space 0, times 0 [ 43.164465][ T4596] CPU: 1 PID: 4596 Comm: syz-executor.0 Tainted: G W syzkaller #0 [ 43.165858][ T4596] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/02/2026 [ 43.167437][ T4596] Call trace: [ 43.167914][ T4596] dump_backtrace+0x0/0x458 [ 43.168596][ T4596] show_stack+0x2c/0x3c [ 43.169235][ T4596] __dump_stack+0x30/0x40 [ 43.169908][ T4596] dump_stack_lvl+0xf4/0x15c [ 43.170620][ T4596] dump_stack+0x1c/0x5c [ 43.171283][ T4596] should_fail+0x3c8/0x520 [ 43.172053][ T4596] __should_failslab+0xbc/0x10c [ 43.172895][ T4596] should_failslab+0x10/0x28 [ 43.173704][ T4596] slab_pre_alloc_hook+0x64/0xe8 [ 43.174540][ T4596] kmem_cache_alloc+0x94/0x3d8 [ 43.175385][ T4596] btrfs_add_delayed_data_ref+0x174/0xd64 [ 43.176430][ T4596] btrfs_alloc_reserved_file_extent+0x1a8/0x2c8 [ 43.177550][ T4596] btrfs_insert_replace_extent+0x818/0x9b0 [ 43.178572][ T4596] btrfs_replace_file_extents+0x8a8/0x1284 [ 43.179590][ T4596] __btrfs_prealloc_file_range+0x35c/0xb80 [ 43.180598][ T4596] btrfs_prealloc_file_range+0x60/0x7c [ 43.181598][ T4596] btrfs_fallocate+0xcb0/0x1720 [ 43.182388][ T4596] vfs_fallocate+0x4a4/0x5fc [ 43.183159][ T4596] ioctl_preallocate+0x234/0x2d4 [ 43.184012][ T4596] do_vfs_ioctl+0x1aa8/0x2404 [ 43.184829][ T4596] __arm64_sys_ioctl+0xe4/0x1c8 [ 43.185690][ T4596] invoke_syscall+0x98/0x28c [ 43.186513][ T4596] el0_svc_common+0x13c/0x258 [ 43.187337][ T4596] do_el0_svc+0x5c/0x140 [ 43.188087][ T4596] el0_svc+0x78/0x1d0 [ 43.188797][ T4596] el0t_64_sync_handler+0xcc/0xe4 [ 43.189689][ T4596] el0t_64_sync+0x1a0/0x1a4 [ 43.191248][ T4596] ------------[ cut here ]------------ [ 43.192632][ T4596] WARNING: CPU: 1 PID: 4596 at fs/btrfs/file.c:2983 btrfs_replace_file_extents+0xd18/0x1284 [ 43.194282][ T4596] Modules linked in: [ 43.194896][ T4596] CPU: 1 PID: 4596 Comm: syz-executor.0 Tainted: G W syzkaller #0 [ 43.196229][ T4596] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/02/2026 [ 43.197806][ T4596] pstate: 62400005 (nZCv daif +PAN -UAO +TCO -DIT -SSBS BTYPE=--) [ 43.199053][ T4596] pc : btrfs_replace_file_extents+0xd18/0x1284 [ 43.200002][ T4596] lr : btrfs_replace_file_extents+0xd18/0x1284 [ 43.200987][ T4596] sp : ffff80001fff72a0 [ 43.201682][ T4596] x29: ffff80001fff73c0 x28: 00000000fffffff4 x27: ffff80001fff7560 [ 43.203110][ T4596] x26: 0000000000000000 x25: dfff800000000000 x24: ffff700003ffee64 [ 43.204546][ T4596] x23: ffff0000de913ae0 x22: ffff0000de9e6370 x21: ffff0000d2372600 [ 43.205952][ T4596] x20: 1fffe0001bd3cc79 x19: ffff0000de9e63c8 x18: 0000000000000000 [ 43.207379][ T4596] x17: 0000000000000000 x16: ffff80001135f958 x15: 0000000000000000 [ 43.208794][ T4596] x14: 0000000000000001 x13: 1fffe000341d09ab x12: 0000000000000000 [ 43.210216][ T4596] x11: ff80800008300a38 x10: 0000000000000000 x9 : e247830c8b877600 [ 43.211656][ T4596] x8 : e247830c8b877600 x7 : 0000000000000001 x6 : 0000000000000001 [ 43.213011][ T4596] x5 : ffff80001fff6bb8 x4 : ffff80001447f520 x3 : ffff80000850fcd0 [ 43.214351][ T4596] x2 : 0000000000000001 x1 : 0000000100000000 x0 : 0000000000000026 [ 43.215703][ T4596] Call trace: [ 43.216284][ T4596] btrfs_replace_file_extents+0xd18/0x1284 [ 43.217262][ T4596] __btrfs_prealloc_file_range+0x35c/0xb80 [ 43.218219][ T4596] btrfs_prealloc_file_range+0x60/0x7c [ 43.219112][ T4596] btrfs_fallocate+0xcb0/0x1720 [ 43.219900][ T4596] vfs_fallocate+0x4a4/0x5fc [ 43.220654][ T4596] ioctl_preallocate+0x234/0x2d4 [ 43.221483][ T4596] do_vfs_ioctl+0x1aa8/0x2404 [ 43.222214][ T4596] __arm64_sys_ioctl+0xe4/0x1c8 [ 43.222995][ T4596] invoke_syscall+0x98/0x28c [ 43.223733][ T4596] el0_svc_common+0x13c/0x258 [ 43.224513][ T4596] do_el0_svc+0x5c/0x140 [ 43.225213][ T4596] el0_svc+0x78/0x1d0 [ 43.225879][ T4596] el0t_64_sync_handler+0xcc/0xe4 [ 43.226744][ T4596] el0t_64_sync+0x1a0/0x1a4 [ 43.227504][ T4596] irq event stamp: 80476 [ 43.228215][ T4596] hardirqs last enabled at (80475): [] __up_console_sem+0xb4/0xfc [ 43.229756][ T4596] hardirqs last disabled at (80476): [] el1_dbg+0x24/0x80 [ 43.231210][ T4596] softirqs last enabled at (80466): [] handle_softirqs+0xa70/0xc14 [ 43.232809][ T4596] softirqs last disabled at (80277): [] __irq_exit_rcu+0x240/0x434 [ 43.234492][ T4596] ---[ end trace b71af0a6ec9a2ce2 ]--- [ 43.236506][ T4596] BTRFS: error (device loop0) in btrfs_replace_file_extents:2983: errno=-12 Out of memory [ 43.238477][ T4596] BTRFS info (device loop0): forced readonly [ 43.441069][ T4617] loop0: detected capacity change from 0 to 32768 [ 43.443950][ T4617] BTRFS: device fsid 24c7a497-3402-47dd-bef8-82358f5f30e0 devid 1 transid 8 /dev/loop0 scanned by syz-executor.0 (4617) [ 43.446939][ T4617] BTRFS info (device loop0): using crc32c (crc32c-generic) checksum algorithm [ 43.448577][ T4617] BTRFS info (device loop0): using free space tree [ 43.449837][ T4617] BTRFS info (device loop0): has skinny extents [ 43.467932][ T4617] BTRFS info (device loop0): enabling ssd optimizations [ 43.472666][ T4617] FAULT_INJECTION: forcing a failure. [ 43.472666][ T4617] name failslab, interval 1, probability 0, space 0, times 0 [ 43.474951][ T4617] CPU: 0 PID: 4617 Comm: syz-executor.0 Tainted: G W syzkaller #0 [ 43.476461][ T4617] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/02/2026 [ 43.478075][ T4617] Call trace: [ 43.478581][ T4617] dump_backtrace+0x0/0x458 [ 43.479292][ T4617] show_stack+0x2c/0x3c [ 43.479972][ T4617] __dump_stack+0x30/0x40 [ 43.480728][ T4617] dump_stack_lvl+0xf4/0x15c [ 43.481475][ T4617] dump_stack+0x1c/0x5c [ 43.482157][ T4617] should_fail+0x3c8/0x520 [ 43.482900][ T4617] __should_failslab+0xbc/0x10c [ 43.483643][ T4617] should_failslab+0x10/0x28 [ 43.484433][ T4617] slab_pre_alloc_hook+0x64/0xe8 [ 43.485260][ T4617] kmem_cache_alloc+0x94/0x3d8 [ 43.486053][ T4617] alloc_extent_map+0x28/0x128 [ 43.486854][ T4617] btrfs_drop_extent_cache+0x160/0xd60 [ 43.487733][ T4617] btrfs_drop_extents+0x2e8/0x2338 [ 43.488581][ T4617] btrfs_replace_file_extents+0x340/0x1284 [ 43.489540][ T4617] __btrfs_prealloc_file_range+0x35c/0xb80 [ 43.490517][ T4617] btrfs_prealloc_file_range+0x60/0x7c [ 43.491463][ T4617] btrfs_fallocate+0xcb0/0x1720 [ 43.492300][ T4617] vfs_fallocate+0x4a4/0x5fc [ 43.493100][ T4617] ioctl_preallocate+0x234/0x2d4 [ 43.493943][ T4617] do_vfs_ioctl+0x1aa8/0x2404 [ 43.494742][ T4617] __arm64_sys_ioctl+0xe4/0x1c8 [ 43.495563][ T4617] invoke_syscall+0x98/0x28c [ 43.496339][ T4617] el0_svc_common+0x13c/0x258 [ 43.497094][ T4617] do_el0_svc+0x5c/0x140 [ 43.497768][ T4617] el0_svc+0x78/0x1d0 [ 43.498440][ T4617] el0t_64_sync_handler+0xcc/0xe4 [ 43.499306][ T4617] el0t_64_sync+0x1a0/0x1a4 [ 43.687001][ T4638] loop0: detected capacity change from 0 to 32768 [ 43.689668][ T4638] BTRFS: device fsid 24c7a497-3402-47dd-bef8-82358f5f30e0 devid 1 transid 8 /dev/loop0 scanned by syz-executor.0 (4638) [ 43.695613][ T4638] BTRFS info (device loop0): using crc32c (crc32c-generic) checksum algorithm [ 43.697054][ T4638] BTRFS info (device loop0): using free space tree [ 43.698134][ T4638] BTRFS info (device loop0): has skinny extents [ 43.709131][ T4638] BTRFS info (device loop0): enabling ssd optimizations [ 43.713292][ T4638] FAULT_INJECTION: forcing a failure. [ 43.713292][ T4638] name failslab, interval 1, probability 0, space 0, times 0 [ 43.715658][ T4638] CPU: 0 PID: 4638 Comm: syz-executor.0 Tainted: G W syzkaller #0 [ 43.717279][ T4638] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/02/2026 [ 43.719078][ T4638] Call trace: [ 43.719644][ T4638] dump_backtrace+0x0/0x458 [ 43.720440][ T4638] show_stack+0x2c/0x3c [ 43.721212][ T4638] __dump_stack+0x30/0x40 [ 43.721949][ T4638] dump_stack_lvl+0xf4/0x15c [ 43.722717][ T4638] dump_stack+0x1c/0x5c [ 43.723437][ T4638] should_fail+0x3c8/0x520 [ 43.724220][ T4638] __should_failslab+0xbc/0x10c [ 43.725063][ T4638] should_failslab+0x10/0x28 [ 43.725863][ T4638] slab_pre_alloc_hook+0x64/0xe8 [ 43.726691][ T4638] kmem_cache_alloc+0x94/0x3d8 [ 43.727648][ T4638] btrfs_add_delayed_data_ref+0x174/0xd64 [ 43.728801][ T4638] btrfs_alloc_reserved_file_extent+0x1a8/0x2c8 [ 43.729920][ T4638] btrfs_insert_replace_extent+0x818/0x9b0 [ 43.730956][ T4638] btrfs_replace_file_extents+0x8a8/0x1284 [ 43.731950][ T4638] __btrfs_prealloc_file_range+0x35c/0xb80 [ 43.732941][ T4638] btrfs_prealloc_file_range+0x60/0x7c [ 43.733862][ T4638] btrfs_fallocate+0xcb0/0x1720 [ 43.734660][ T4638] vfs_fallocate+0x4a4/0x5fc [ 43.735419][ T4638] ioctl_preallocate+0x234/0x2d4 [ 43.736267][ T4638] do_vfs_ioctl+0x1aa8/0x2404 [ 43.737067][ T4638] __arm64_sys_ioctl+0xe4/0x1c8 [ 43.737888][ T4638] invoke_syscall+0x98/0x28c [ 43.738641][ T4638] el0_svc_common+0x13c/0x258 [ 43.739467][ T4638] do_el0_svc+0x5c/0x140 [ 43.740190][ T4638] el0_svc+0x78/0x1d0 [ 43.740856][ T4638] el0t_64_sync_handler+0xcc/0xe4 [ 43.741709][ T4638] el0t_64_sync+0x1a0/0x1a4 [ 43.743974][ T4638] ------------[ cut here ]------------ [ 43.745070][ T4638] WARNING: CPU: 0 PID: 4638 at fs/btrfs/file.c:2983 btrfs_replace_file_extents+0xd18/0x1284 [ 43.746725][ T4638] Modules linked in: [ 43.747373][ T4638] CPU: 0 PID: 4638 Comm: syz-executor.0 Tainted: G W syzkaller #0 [ 43.748886][ T4638] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/02/2026 [ 43.750571][ T4638] pstate: 62400005 (nZCv daif +PAN -UAO +TCO -DIT -SSBS BTYPE=--) [ 43.751852][ T4638] pc : btrfs_replace_file_extents+0xd18/0x1284 [ 43.752896][ T4638] lr : btrfs_replace_file_extents+0xd18/0x1284 [ 43.753937][ T4638] sp : ffff80001fef72a0 [ 43.754619][ T4638] x29: ffff80001fef73c0 x28: 00000000fffffff4 x27: ffff80001fef7560 [ 43.755948][ T4638] x26: 0000000000000000 x25: dfff800000000000 x24: ffff700003fdee64 [ 43.757309][ T4638] x23: ffff0000e250f5c0 x22: ffff0000dd7db9a0 x21: ffff0000cea59a00 [ 43.758716][ T4638] x20: 1fffe0001bafb73f x19: ffff0000dd7db9f8 x18: 0000000000000000 [ 43.760085][ T4638] x17: 0000000000000000 x16: ffff80001135f958 x15: 0000000000000000 [ 43.761594][ T4638] x14: 0000000000000001 x13: 1fffe000341cc7ab x12: 0000000000000000 [ 43.763099][ T4638] x11: ff80800008300a38 x10: 0000000000000000 x9 : 54da295ef2c81900 [ 43.764630][ T4638] x8 : 54da295ef2c81900 x7 : 0000000000000001 x6 : 0000000000000001 [ 43.765989][ T4638] x5 : ffff80001fef6bb8 x4 : ffff80001447f520 x3 : ffff80000850fcd0 [ 43.767356][ T4638] x2 : 0000000000000001 x1 : 0000000100000000 x0 : 0000000000000026 [ 43.768849][ T4638] Call trace: [ 43.769417][ T4638] btrfs_replace_file_extents+0xd18/0x1284 [ 43.770466][ T4638] __btrfs_prealloc_file_range+0x35c/0xb80 [ 43.771599][ T4638] btrfs_prealloc_file_range+0x60/0x7c [ 43.772699][ T4638] btrfs_fallocate+0xcb0/0x1720 [ 43.773686][ T4638] vfs_fallocate+0x4a4/0x5fc [ 43.774575][ T4638] ioctl_preallocate+0x234/0x2d4 [ 43.775507][ T4638] do_vfs_ioctl+0x1aa8/0x2404 [ 43.776389][ T4638] __arm64_sys_ioctl+0xe4/0x1c8 [ 43.777274][ T4638] invoke_syscall+0x98/0x28c [ 43.778045][ T4638] el0_svc_common+0x13c/0x258 [ 43.778867][ T4638] do_el0_svc+0x5c/0x140 [ 43.779610][ T4638] el0_svc+0x78/0x1d0 [ 43.780322][ T4638] el0t_64_sync_handler+0xcc/0xe4 [ 43.781185][ T4638] el0t_64_sync+0x1a0/0x1a4 [ 43.781957][ T4638] irq event stamp: 79770 [ 43.782684][ T4638] hardirqs last enabled at (79769): [] __up_console_sem+0xb4/0xfc [ 43.784302][ T4638] hardirqs last disabled at (79770): [] el1_dbg+0x24/0x80 [ 43.785870][ T4638] softirqs last enabled at (79750): [] handle_softirqs+0xa70/0xc14 [ 43.787583][ T4638] softirqs last disabled at (79727): [] __irq_exit_rcu+0x240/0x434 [ 43.789354][ T4638] ---[ end trace b71af0a6ec9a2ce3 ]--- [ 43.791198][ T4638] BTRFS: error (device loop0) in btrfs_replace_file_extents:2983: errno=-12 Out of memory [ 43.793105][ T4638] BTRFS info (device loop0): forced readonly [ 43.968225][ T4659] loop0: detected capacity change from 0 to 32768 [ 43.971698][ T4659] BTRFS: device fsid 24c7a497-3402-47dd-bef8-82358f5f30e0 devid 1 transid 8 /dev/loop0 scanned by syz-executor.0 (4659) [ 43.977249][ T4659] BTRFS info (device loop0): using crc32c (crc32c-generic) checksum algorithm [ 43.978921][ T4659] BTRFS info (device loop0): using free space tree [ 43.980108][ T4659] BTRFS info (device loop0): has skinny extents [ 43.990728][ T4659] BTRFS info (device loop0): enabling ssd optimizations [ 43.995434][ T4659] FAULT_INJECTION: forcing a failure. [ 43.995434][ T4659] name failslab, interval 1, probability 0, space 0, times 0 [ 43.997592][ T4659] CPU: 1 PID: 4659 Comm: syz-executor.0 Tainted: G W syzkaller #0 [ 43.999096][ T4659] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/02/2026 [ 44.000676][ T4659] Call trace: [ 44.001193][ T4659] dump_backtrace+0x0/0x458 [ 44.001939][ T4659] show_stack+0x2c/0x3c [ 44.002635][ T4659] __dump_stack+0x30/0x40 [ 44.003363][ T4659] dump_stack_lvl+0xf4/0x15c [ 44.004136][ T4659] dump_stack+0x1c/0x5c [ 44.004865][ T4659] should_fail+0x3c8/0x520 [ 44.005620][ T4659] __should_failslab+0xbc/0x10c [ 44.006463][ T4659] should_failslab+0x10/0x28 [ 44.007197][ T4659] slab_pre_alloc_hook+0x64/0xe8 [ 44.007996][ T4659] kmem_cache_alloc+0x94/0x3d8 [ 44.008809][ T4659] btrfs_add_delayed_data_ref+0x3f0/0xd64 [ 44.009772][ T4659] btrfs_alloc_reserved_file_extent+0x1a8/0x2c8 [ 44.010858][ T4659] btrfs_insert_replace_extent+0x818/0x9b0 [ 44.011727][ T4659] btrfs_replace_file_extents+0x8a8/0x1284 [ 44.012697][ T4659] __btrfs_prealloc_file_range+0x35c/0xb80 [ 44.013729][ T4659] btrfs_prealloc_file_range+0x60/0x7c [ 44.014642][ T4659] btrfs_fallocate+0xcb0/0x1720 [ 44.015487][ T4659] vfs_fallocate+0x4a4/0x5fc [ 44.016289][ T4659] ioctl_preallocate+0x234/0x2d4 [ 44.017143][ T4659] do_vfs_ioctl+0x1aa8/0x2404 [ 44.017888][ T4659] __arm64_sys_ioctl+0xe4/0x1c8 [ 44.018700][ T4659] invoke_syscall+0x98/0x28c [ 44.019469][ T4659] el0_svc_common+0x13c/0x258 [ 44.020289][ T4659] do_el0_svc+0x5c/0x140 [ 44.020975][ T4659] el0_svc+0x78/0x1d0 [ 44.021663][ T4659] el0t_64_sync_handler+0xcc/0xe4 [ 44.022543][ T4659] el0t_64_sync+0x1a0/0x1a4 [ 44.027955][ T4659] ------------[ cut here ]------------ [ 44.029045][ T4659] WARNING: CPU: 1 PID: 4659 at fs/btrfs/file.c:2983 btrfs_replace_file_extents+0xd18/0x1284 [ 44.030842][ T4659] Modules linked in: [ 44.031541][ T4659] CPU: 1 PID: 4659 Comm: syz-executor.0 Tainted: G W syzkaller #0 [ 44.033072][ T4659] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/02/2026 [ 44.034771][ T4659] pstate: 62400005 (nZCv daif +PAN -UAO +TCO -DIT -SSBS BTYPE=--) [ 44.036078][ T4659] pc : btrfs_replace_file_extents+0xd18/0x1284 [ 44.037140][ T4659] lr : btrfs_replace_file_extents+0xd18/0x1284 [ 44.038129][ T4659] sp : ffff80001f8272a0 [ 44.038801][ T4659] x29: ffff80001f8273c0 x28: 00000000fffffff4 x27: ffff80001f827560 [ 44.040159][ T4659] x26: 0000000000000000 x25: dfff800000000000 x24: ffff700003f04e64 [ 44.041491][ T4659] x23: ffff0000dea009d0 x22: ffff0000de9e6420 x21: ffff0000db28d400 [ 44.042815][ T4659] x20: 1fffe0001bd3cc8f x19: ffff0000de9e6478 x18: 0000000000000000 [ 44.044216][ T4659] x17: 0000000000000000 x16: ffff80001135f958 x15: 0000000000000000 [ 44.045630][ T4659] x14: 0000000000000001 x13: 1fffe000341d09ab x12: 0000000000000000 [ 44.047006][ T4659] x11: ff80800008300a38 x10: 0000000000000000 x9 : 1a183eceebc46200 [ 44.048376][ T4659] x8 : 1a183eceebc46200 x7 : 0000000000000001 x6 : 0000000000000001 [ 44.049777][ T4659] x5 : ffff80001f826bb8 x4 : ffff80001447f520 x3 : ffff80000850fcd0 [ 44.051086][ T4659] x2 : 0000000000000001 x1 : 0000000100000000 x0 : 0000000000000026 [ 44.052469][ T4659] Call trace: [ 44.053000][ T4659] btrfs_replace_file_extents+0xd18/0x1284 [ 44.053977][ T4659] __btrfs_prealloc_file_range+0x35c/0xb80 [ 44.054979][ T4659] btrfs_prealloc_file_range+0x60/0x7c [ 44.055965][ T4659] btrfs_fallocate+0xcb0/0x1720 [ 44.056844][ T4659] vfs_fallocate+0x4a4/0x5fc [ 44.057654][ T4659] ioctl_preallocate+0x234/0x2d4 [ 44.058496][ T4659] do_vfs_ioctl+0x1aa8/0x2404 [ 44.059322][ T4659] __arm64_sys_ioctl+0xe4/0x1c8 [ 44.060162][ T4659] invoke_syscall+0x98/0x28c [ 44.060974][ T4659] el0_svc_common+0x13c/0x258 [ 44.061826][ T4659] do_el0_svc+0x5c/0x140 [ 44.062600][ T4659] el0_svc+0x78/0x1d0 [ 44.063314][ T4659] el0t_64_sync_handler+0xcc/0xe4 [ 44.064205][ T4659] el0t_64_sync+0x1a0/0x1a4 [ 44.064963][ T4659] irq event stamp: 79980 [ 44.065701][ T4659] hardirqs last enabled at (79979): [] __up_console_sem+0xb4/0xfc [ 44.067324][ T4659] hardirqs last disabled at (79980): [] el1_dbg+0x24/0x80 [ 44.068792][ T4659] softirqs last enabled at (79956): [] handle_softirqs+0xa70/0xc14 [ 44.070375][ T4659] softirqs last disabled at (79929): [] __irq_exit_rcu+0x240/0x434 [ 44.071946][ T4659] ---[ end trace b71af0a6ec9a2ce4 ]--- [ 44.073687][ T4659] BTRFS: error (device loop0) in btrfs_replace_file_extents:2983: errno=-12 Out of memory [ 44.075491][ T4659] BTRFS info (device loop0): forced readonly [ 44.258189][ T4681] loop0: detected capacity change from 0 to 32768 [ 44.260825][ T4681] BTRFS: device fsid 24c7a497-3402-47dd-bef8-82358f5f30e0 devid 1 transid 8 /dev/loop0 scanned by syz-executor.0 (4681) [ 44.264448][ T4681] BTRFS info (device loop0): using crc32c (crc32c-generic) checksum algorithm [ 44.266021][ T4681] BTRFS info (device loop0): using free space tree [ 44.267093][ T4681] BTRFS info (device loop0): has skinny extents [ 44.286569][ T4681] BTRFS info (device loop0): enabling ssd optimizations [ 44.290682][ T4681] FAULT_INJECTION: forcing a failure. [ 44.290682][ T4681] name failslab, interval 1, probability 0, space 0, times 0 [ 44.293166][ T4681] CPU: 1 PID: 4681 Comm: syz-executor.0 Tainted: G W syzkaller #0 [ 44.294693][ T4681] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/02/2026 [ 44.296421][ T4681] Call trace: [ 44.296929][ T4681] dump_backtrace+0x0/0x458 [ 44.297725][ T4681] show_stack+0x2c/0x3c [ 44.298388][ T4681] __dump_stack+0x30/0x40 [ 44.299122][ T4681] dump_stack_lvl+0xf4/0x15c [ 44.299884][ T4681] dump_stack+0x1c/0x5c [ 44.300594][ T4681] should_fail+0x3c8/0x520 [ 44.301316][ T4681] __should_failslab+0xbc/0x10c [ 44.302117][ T4681] should_failslab+0x10/0x28 [ 44.302859][ T4681] slab_pre_alloc_hook+0x64/0xe8 [ 44.303684][ T4681] kmem_cache_alloc+0x94/0x3d8 [ 44.304513][ T4681] btrfs_add_delayed_data_ref+0x3f0/0xd64 [ 44.305437][ T4681] btrfs_alloc_reserved_file_extent+0x1a8/0x2c8 [ 44.306500][ T4681] btrfs_insert_replace_extent+0x818/0x9b0 [ 44.307660][ T4681] btrfs_replace_file_extents+0x8a8/0x1284 [ 44.308789][ T4681] __btrfs_prealloc_file_range+0x35c/0xb80 [ 44.309922][ T4681] btrfs_prealloc_file_range+0x60/0x7c [ 44.311019][ T4681] btrfs_fallocate+0xcb0/0x1720 [ 44.311977][ T4681] vfs_fallocate+0x4a4/0x5fc [ 44.312856][ T4681] ioctl_preallocate+0x234/0x2d4 [ 44.313718][ T4681] do_vfs_ioctl+0x1aa8/0x2404 [ 44.314503][ T4681] __arm64_sys_ioctl+0xe4/0x1c8 [ 44.315337][ T4681] invoke_syscall+0x98/0x28c [ 44.316252][ T4681] el0_svc_common+0x13c/0x258 [ 44.317214][ T4681] do_el0_svc+0x5c/0x140 [ 44.317976][ T4681] el0_svc+0x78/0x1d0 [ 44.318671][ T4681] el0t_64_sync_handler+0xcc/0xe4 [ 44.319515][ T4681] el0t_64_sync+0x1a0/0x1a4 [ 44.321765][ T4681] ------------[ cut here ]------------ [ 44.322717][ T4681] WARNING: CPU: 1 PID: 4681 at fs/btrfs/file.c:2983 btrfs_replace_file_extents+0xd18/0x1284 [ 44.324472][ T4681] Modules linked in: [ 44.325103][ T4681] CPU: 1 PID: 4681 Comm: syz-executor.0 Tainted: G W syzkaller #0 [ 44.326636][ T4681] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/02/2026 [ 44.328386][ T4681] pstate: 62400005 (nZCv daif +PAN -UAO +TCO -DIT -SSBS BTYPE=--) [ 44.329716][ T4681] pc : btrfs_replace_file_extents+0xd18/0x1284 [ 44.330756][ T4681] lr : btrfs_replace_file_extents+0xd18/0x1284 [ 44.331784][ T4681] sp : ffff8000203072a0 [ 44.332487][ T4681] x29: ffff8000203073c0 x28: 00000000fffffff4 x27: ffff800020307560 [ 44.333844][ T4681] x26: 0000000000000000 x25: dfff800000000000 x24: ffff700004060e64 [ 44.335302][ T4681] x23: ffff0000de916bf0 x22: ffff0000de9e6580 x21: ffff0000cd296600 [ 44.336688][ T4681] x20: 1fffe0001bd3ccbb x19: ffff0000de9e65d8 x18: 0000000000000000 [ 44.338120][ T4681] x17: 0000000000000000 x16: ffff80001135f958 x15: 0000000000000000 [ 44.339567][ T4681] x14: 0000000000000001 x13: 1fffe000341d09ab x12: 0000000000000000 [ 44.340982][ T4681] x11: ff80800008300a38 x10: 0000000000000000 x9 : fc515b43ad2f6300 [ 44.342336][ T4681] x8 : fc515b43ad2f6300 x7 : 0000000000000001 x6 : 0000000000000001 [ 44.343698][ T4681] x5 : ffff800020306bb8 x4 : ffff80001447f520 x3 : ffff80000850fcd0 [ 44.345067][ T4681] x2 : 0000000000000001 x1 : 0000000100000000 x0 : 0000000000000026 [ 44.346396][ T4681] Call trace: [ 44.346950][ T4681] btrfs_replace_file_extents+0xd18/0x1284 [ 44.347936][ T4681] __btrfs_prealloc_file_range+0x35c/0xb80 [ 44.348954][ T4681] btrfs_prealloc_file_range+0x60/0x7c [ 44.349866][ T4681] btrfs_fallocate+0xcb0/0x1720 [ 44.350703][ T4681] vfs_fallocate+0x4a4/0x5fc [ 44.351495][ T4681] ioctl_preallocate+0x234/0x2d4 [ 44.352360][ T4681] do_vfs_ioctl+0x1aa8/0x2404 [ 44.353171][ T4681] __arm64_sys_ioctl+0xe4/0x1c8 [ 44.354013][ T4681] invoke_syscall+0x98/0x28c [ 44.354804][ T4681] el0_svc_common+0x13c/0x258 [ 44.355598][ T4681] do_el0_svc+0x5c/0x140 [ 44.356297][ T4681] el0_svc+0x78/0x1d0 [ 44.356949][ T4681] el0t_64_sync_handler+0xcc/0xe4 [ 44.357789][ T4681] el0t_64_sync+0x1a0/0x1a4 [ 44.358549][ T4681] irq event stamp: 79990 [ 44.359256][ T4681] hardirqs last enabled at (79989): [] __up_console_sem+0xb4/0xfc [ 44.360837][ T4681] hardirqs last disabled at (79990): [] el1_dbg+0x24/0x80 [ 44.362290][ T4681] softirqs last enabled at (79966): [] handle_softirqs+0xa70/0xc14 [ 44.363893][ T4681] softirqs last disabled at (79847): [] __irq_exit_rcu+0x240/0x434 [ 44.365442][ T4681] ---[ end trace b71af0a6ec9a2ce5 ]--- [ 44.367160][ T4681] BTRFS: error (device loop0) in btrfs_replace_file_extents:2983: errno=-12 Out of memory [ 44.368878][ T4681] BTRFS info (device loop0): forced readonly [ 44.491859][ T4412] Bluetooth: hci0: command 0x041b tx timeout [ 44.548346][ T4702] loop0: detected capacity change from 0 to 32768 [ 44.550835][ T4702] BTRFS: device fsid 24c7a497-3402-47dd-bef8-82358f5f30e0 devid 1 transid 8 /dev/loop0 scanned by syz-executor.0 (4702) [ 44.554834][ T4702] BTRFS info (device loop0): using crc32c (crc32c-generic) checksum algorithm [ 44.556501][ T4702] BTRFS info (device loop0): using free space tree [ 44.557616][ T4702] BTRFS info (device loop0): has skinny extents [ 44.566230][ T4702] BTRFS info (device loop0): enabling ssd optimizations [ 44.570766][ T4702] FAULT_INJECTION: forcing a failure. [ 44.570766][ T4702] name failslab, interval 1, probability 0, space 0, times 0 [ 44.574003][ T4702] CPU: 1 PID: 4702 Comm: syz-executor.0 Tainted: G W syzkaller #0 [ 44.575565][ T4702] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/02/2026 [ 44.577221][ T4702] Call trace: [ 44.577753][ T4702] dump_backtrace+0x0/0x458 [ 44.578551][ T4702] show_stack+0x2c/0x3c [ 44.579257][ T4702] __dump_stack+0x30/0x40 [ 44.579986][ T4702] dump_stack_lvl+0xf4/0x15c [ 44.580780][ T4702] dump_stack+0x1c/0x5c [ 44.581494][ T4702] should_fail+0x3c8/0x520 [ 44.582275][ T4702] __should_failslab+0xbc/0x10c [ 44.583131][ T4702] should_failslab+0x10/0x28 [ 44.583884][ T4702] slab_pre_alloc_hook+0x64/0xe8 [ 44.584717][ T4702] kmem_cache_alloc+0x94/0x3d8 [ 44.585541][ T4702] btrfs_add_delayed_data_ref+0x3f0/0xd64 [ 44.586495][ T4702] btrfs_alloc_reserved_file_extent+0x1a8/0x2c8 [ 44.587537][ T4702] btrfs_insert_replace_extent+0x818/0x9b0 [ 44.588483][ T4702] btrfs_replace_file_extents+0x8a8/0x1284 [ 44.589402][ T4702] __btrfs_prealloc_file_range+0x35c/0xb80 [ 44.590308][ T4702] btrfs_prealloc_file_range+0x60/0x7c [ 44.591236][ T4702] btrfs_fallocate+0xcb0/0x1720 [ 44.592071][ T4702] vfs_fallocate+0x4a4/0x5fc [ 44.592835][ T4702] ioctl_preallocate+0x234/0x2d4 [ 44.593639][ T4702] do_vfs_ioctl+0x1aa8/0x2404 [ 44.594576][ T4702] __arm64_sys_ioctl+0xe4/0x1c8 [ 44.595555][ T4702] invoke_syscall+0x98/0x28c [ 44.596345][ T4702] el0_svc_common+0x13c/0x258 [ 44.597092][ T4702] do_el0_svc+0x5c/0x140 [ 44.597767][ T4702] el0_svc+0x78/0x1d0 [ 44.598444][ T4702] el0t_64_sync_handler+0xcc/0xe4 [ 44.599226][ T4702] el0t_64_sync+0x1a0/0x1a4 [ 44.601448][ T4702] ------------[ cut here ]------------ [ 44.602513][ T4702] WARNING: CPU: 0 PID: 4702 at fs/btrfs/file.c:2983 btrfs_replace_file_extents+0xd18/0x1284 [ 44.604205][ T4702] Modules linked in: [ 44.604851][ T4702] CPU: 0 PID: 4702 Comm: syz-executor.0 Tainted: G W syzkaller #0 [ 44.606284][ T4702] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/02/2026 [ 44.607927][ T4702] pstate: 62400005 (nZCv daif +PAN -UAO +TCO -DIT -SSBS BTYPE=--) [ 44.609304][ T4702] pc : btrfs_replace_file_extents+0xd18/0x1284 [ 44.610244][ T4702] lr : btrfs_replace_file_extents+0xd18/0x1284 [ 44.611402][ T4702] sp : ffff8000203a72a0 [ 44.612237][ T4702] x29: ffff8000203a73c0 x28: 00000000fffffff4 x27: ffff8000203a7560 [ 44.613844][ T4702] x26: 0000000000000000 x25: dfff800000000000 x24: ffff700004074e64 [ 44.615214][ T4702] x23: ffff0000e24809d0 x22: ffff0000de9e66e0 x21: ffff0000c1060000 [ 44.616576][ T4702] x20: 1fffe0001bd3cce7 x19: ffff0000de9e6738 x18: 0000000000000000 [ 44.617945][ T4702] x17: 0000000000000000 x16: ffff80001135f958 x15: 0000000000000000 [ 44.619351][ T4702] x14: 0000000000000001 x13: 1fffe000341cc7ab x12: 0000000000000000 [ 44.620950][ T4702] x11: ff80800008300a38 x10: 0000000000000000 x9 : ba7cf9977d1e3000 [ 44.622563][ T4702] x8 : ba7cf9977d1e3000 x7 : 0000000000000001 x6 : 0000000000000001 [ 44.624144][ T4702] x5 : ffff8000203a6bb8 x4 : ffff80001447f520 x3 : ffff80000850fcd0 [ 44.625669][ T4702] x2 : 0000000000000001 x1 : 0000000100000000 x0 : 0000000000000026 [ 44.627198][ T4702] Call trace: [ 44.627757][ T4702] btrfs_replace_file_extents+0xd18/0x1284 [ 44.628757][ T4702] __btrfs_prealloc_file_range+0x35c/0xb80 [ 44.629807][ T4702] btrfs_prealloc_file_range+0x60/0x7c [ 44.630723][ T4702] btrfs_fallocate+0xcb0/0x1720 [ 44.631559][ T4702] vfs_fallocate+0x4a4/0x5fc [ 44.632396][ T4702] ioctl_preallocate+0x234/0x2d4 [ 44.633235][ T4702] do_vfs_ioctl+0x1aa8/0x2404 [ 44.634009][ T4702] __arm64_sys_ioctl+0xe4/0x1c8 [ 44.634829][ T4702] invoke_syscall+0x98/0x28c [ 44.635657][ T4702] el0_svc_common+0x13c/0x258 [ 44.636462][ T4702] do_el0_svc+0x5c/0x140 [ 44.637175][ T4702] el0_svc+0x78/0x1d0 [ 44.637828][ T4702] el0t_64_sync_handler+0xcc/0xe4 [ 44.638666][ T4702] el0t_64_sync+0x1a0/0x1a4 [ 44.639574][ T4702] irq event stamp: 79652 [ 44.640347][ T4702] hardirqs last enabled at (79651): [] __up_console_sem+0xb4/0xfc [ 44.642134][ T4702] hardirqs last disabled at (79652): [] el1_dbg+0x24/0x80 [ 44.643783][ T4702] softirqs last enabled at (79628): [] handle_softirqs+0xa70/0xc14 [ 44.645459][ T4702] softirqs last disabled at (79615): [] __irq_exit_rcu+0x240/0x434 [ 44.647099][ T4702] ---[ end trace b71af0a6ec9a2ce6 ]--- [ 44.649338][ T4702] BTRFS: error (device loop0) in btrfs_replace_file_extents:2983: errno=-12 Out of memory [ 44.650870][ T4702] BTRFS info (device loop0): forced readonly [ 44.863062][ T4723] BTRFS: device fsid 24c7a497-3402-47dd-bef8-82358f5f30e0 devid 1 transid 8 /dev/loop0 scanned by syz-executor.0 (4723) [ 44.867061][ T4723] BTRFS info (device loop0): using crc32c (crc32c-generic) checksum algorithm [ 44.868629][ T4723] BTRFS info (device loop0): using free space tree [ 44.869817][ T4723] BTRFS info (device loop0): has skinny extents [ 44.878374][ T4723] BTRFS info (device loop0): enabling ssd optimizations [ 44.882678][ T4723] FAULT_INJECTION: forcing a failure. [ 44.882678][ T4723] name failslab, interval 1, probability 0, space 0, times 0 [ 44.885119][ T4723] CPU: 1 PID: 4723 Comm: syz-executor.0 Tainted: G W syzkaller #0 [ 44.886763][ T4723] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/02/2026 [ 44.888471][ T4723] Call trace: [ 44.889012][ T4723] dump_backtrace+0x0/0x458 [ 44.889776][ T4723] show_stack+0x2c/0x3c [ 44.890469][ T4723] __dump_stack+0x30/0x40 [ 44.891263][ T4723] dump_stack_lvl+0xf4/0x15c [ 44.892014][ T4723] dump_stack+0x1c/0x5c [ 44.892751][ T4723] should_fail+0x3c8/0x520 [ 44.893501][ T4723] __should_failslab+0xbc/0x10c [ 44.894330][ T4723] should_failslab+0x10/0x28 [ 44.895115][ T4723] slab_pre_alloc_hook+0x64/0xe8 [ 44.896006][ T4723] kmem_cache_alloc+0x94/0x3d8 [ 44.896898][ T4723] btrfs_add_delayed_data_ref+0x3f0/0xd64 [ 44.897879][ T4723] btrfs_alloc_reserved_file_extent+0x1a8/0x2c8 [ 44.898992][ T4723] btrfs_insert_replace_extent+0x818/0x9b0 [ 44.900025][ T4723] btrfs_replace_file_extents+0x8a8/0x1284 [ 44.901052][ T4723] __btrfs_prealloc_file_range+0x35c/0xb80 [ 44.902041][ T4723] btrfs_prealloc_file_range+0x60/0x7c [ 44.902999][ T4723] btrfs_fallocate+0xcb0/0x1720 [ 44.903835][ T4723] vfs_fallocate+0x4a4/0x5fc [ 44.904629][ T4723] ioctl_preallocate+0x234/0x2d4 [ 44.905479][ T4723] do_vfs_ioctl+0x1aa8/0x2404 [ 44.906285][ T4723] __arm64_sys_ioctl+0xe4/0x1c8 [ 44.907144][ T4723] invoke_syscall+0x98/0x28c [ 44.907912][ T4723] el0_svc_common+0x13c/0x258 [ 44.908705][ T4723] do_el0_svc+0x5c/0x140 [ 44.909412][ T4723] el0_svc+0x78/0x1d0 [ 44.910131][ T4723] el0t_64_sync_handler+0xcc/0xe4 [ 44.911081][ T4723] el0t_64_sync+0x1a0/0x1a4 [ 44.914229][ T4723] ------------[ cut here ]------------ [ 44.915248][ T4723] WARNING: CPU: 1 PID: 4723 at fs/btrfs/file.c:2983 btrfs_replace_file_extents+0xd18/0x1284 [ 44.917064][ T4723] Modules linked in: [ 44.917724][ T4723] CPU: 1 PID: 4723 Comm: syz-executor.0 Tainted: G W syzkaller #0 [ 44.919562][ T4723] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/02/2026 [ 44.921507][ T4723] pstate: 62400005 (nZCv daif +PAN -UAO +TCO -DIT -SSBS BTYPE=--) [ 44.923011][ T4723] pc : btrfs_replace_file_extents+0xd18/0x1284 [ 44.924161][ T4723] lr : btrfs_replace_file_extents+0xd18/0x1284 [ 44.925302][ T4723] sp : ffff8000204972a0 [ 44.926131][ T4723] x29: ffff8000204973c0 x28: 00000000fffffff4 x27: ffff800020497560 [ 44.927694][ T4723] x26: 0000000000000000 x25: dfff800000000000 x24: ffff700004092e64 [ 44.929316][ T4723] x23: ffff0000e2482740 x22: ffff0000de9e6840 x21: ffff0000c1063c00 [ 44.930791][ T4723] x20: 1fffe0001bd3cd13 x19: ffff0000de9e6898 x18: 0000000000000000 [ 44.932165][ T4723] x17: 0000000000000000 x16: ffff80001135f958 x15: 0000000000000000 [ 44.933593][ T4723] x14: 0000000000000001 x13: 1fffe000341d09ab x12: 0000000000000000 [ 44.935248][ T4723] x11: ff80800008300a38 x10: 0000000000000000 x9 : 53dcdad52cb48000 [ 44.936654][ T4723] x8 : 53dcdad52cb48000 x7 : 0000000000000001 x6 : 0000000000000001 [ 44.937985][ T4723] x5 : ffff800020496bb8 x4 : ffff80001447f520 x3 : ffff80000850fcd0 [ 44.939284][ T4723] x2 : 0000000000000001 x1 : 0000000100000000 x0 : 0000000000000026 [ 44.940636][ T4723] Call trace: [ 44.941197][ T4723] btrfs_replace_file_extents+0xd18/0x1284 [ 44.942208][ T4723] __btrfs_prealloc_file_range+0x35c/0xb80 [ 44.943205][ T4723] btrfs_prealloc_file_range+0x60/0x7c [ 44.944165][ T4723] btrfs_fallocate+0xcb0/0x1720 [ 44.945023][ T4723] vfs_fallocate+0x4a4/0x5fc [ 44.945762][ T4723] ioctl_preallocate+0x234/0x2d4 [ 44.946579][ T4723] do_vfs_ioctl+0x1aa8/0x2404 [ 44.947404][ T4723] __arm64_sys_ioctl+0xe4/0x1c8 [ 44.948258][ T4723] invoke_syscall+0x98/0x28c [ 44.949060][ T4723] el0_svc_common+0x13c/0x258 [ 44.949848][ T4723] do_el0_svc+0x5c/0x140 [ 44.950582][ T4723] el0_svc+0x78/0x1d0 [ 44.951280][ T4723] el0t_64_sync_handler+0xcc/0xe4 [ 44.952106][ T4723] el0t_64_sync+0x1a0/0x1a4 [ 44.952882][ T4723] irq event stamp: 79780 [ 44.953594][ T4723] hardirqs last enabled at (79779): [] __up_console_sem+0xb4/0xfc [ 44.955179][ T4723] hardirqs last disabled at (79780): [] el1_dbg+0x24/0x80 [ 44.956690][ T4723] softirqs last enabled at (79756): [] handle_softirqs+0xa70/0xc14 [ 44.958352][ T4723] softirqs last disabled at (79689): [] __irq_exit_rcu+0x240/0x434 [ 44.960000][ T4723] ---[ end trace b71af0a6ec9a2ce7 ]--- [ 44.961640][ T4723] BTRFS: error (device loop0) in btrfs_replace_file_extents:2983: errno=-12 Out of memory [ 44.963321][ T4723] BTRFS info (device loop0): forced readonly [ 45.136643][ T4744] BTRFS: device fsid 24c7a497-3402-47dd-bef8-82358f5f30e0 devid 1 transid 8 /dev/loop0 scanned by syz-executor.0 (4744) [ 45.140935][ T4744] BTRFS info (device loop0): using crc32c (crc32c-generic) checksum algorithm [ 45.142823][ T4744] BTRFS info (device loop0): using free space tree [ 45.144042][ T4744] BTRFS info (device loop0): has skinny extents [ 45.155564][ T4744] BTRFS info (device loop0): enabling ssd optimizations [ 45.159333][ T4744] FAULT_INJECTION: forcing a failure. [ 45.159333][ T4744] name failslab, interval 1, probability 0, space 0, times 0 [ 45.161608][ T4744] CPU: 1 PID: 4744 Comm: syz-executor.0 Tainted: G W syzkaller #0 [ 45.163231][ T4744] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/02/2026 [ 45.164894][ T4744] Call trace: [ 45.165423][ T4744] dump_backtrace+0x0/0x458 [ 45.166176][ T4744] show_stack+0x2c/0x3c [ 45.166902][ T4744] __dump_stack+0x30/0x40 [ 45.167616][ T4744] dump_stack_lvl+0xf4/0x15c [ 45.168387][ T4744] dump_stack+0x1c/0x5c [ 45.169092][ T4744] should_fail+0x3c8/0x520 [ 45.169819][ T4744] __should_failslab+0xbc/0x10c [ 45.170610][ T4744] should_failslab+0x10/0x28 [ 45.171379][ T4744] slab_pre_alloc_hook+0x64/0xe8 [ 45.172155][ T4744] kmem_cache_alloc+0x94/0x3d8 [ 45.172952][ T4744] btrfs_add_delayed_data_ref+0x3f0/0xd64 [ 45.173894][ T4744] btrfs_alloc_reserved_file_extent+0x1a8/0x2c8 [ 45.174980][ T4744] btrfs_insert_replace_extent+0x818/0x9b0 [ 45.175942][ T4744] btrfs_replace_file_extents+0x8a8/0x1284 [ 45.176895][ T4744] __btrfs_prealloc_file_range+0x35c/0xb80 [ 45.177880][ T4744] btrfs_prealloc_file_range+0x60/0x7c [ 45.178796][ T4744] btrfs_fallocate+0xcb0/0x1720 [ 45.179603][ T4744] vfs_fallocate+0x4a4/0x5fc [ 45.180369][ T4744] ioctl_preallocate+0x234/0x2d4 [ 45.181207][ T4744] do_vfs_ioctl+0x1aa8/0x2404 [ 45.181986][ T4744] __arm64_sys_ioctl+0xe4/0x1c8 [ 45.182781][ T4744] invoke_syscall+0x98/0x28c [ 45.183487][ T4744] el0_svc_common+0x13c/0x258 [ 45.184254][ T4744] do_el0_svc+0x5c/0x140 [ 45.184968][ T4744] el0_svc+0x78/0x1d0 [ 45.185675][ T4744] el0t_64_sync_handler+0xcc/0xe4 [ 45.186566][ T4744] el0t_64_sync+0x1a0/0x1a4 [ 45.188096][ T4744] ------------[ cut here ]------------ [ 45.189089][ T4744] WARNING: CPU: 1 PID: 4744 at fs/btrfs/file.c:2983 btrfs_replace_file_extents+0xd18/0x1284 [ 45.190750][ T4744] Modules linked in: [ 45.191475][ T4744] CPU: 1 PID: 4744 Comm: syz-executor.0 Tainted: G W syzkaller #0 [ 45.193048][ T4744] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/02/2026 [ 45.195049][ T4744] pstate: 62400005 (nZCv daif +PAN -UAO +TCO -DIT -SSBS BTYPE=--) [ 45.196383][ T4744] pc : btrfs_replace_file_extents+0xd18/0x1284 [ 45.197384][ T4744] lr : btrfs_replace_file_extents+0xd18/0x1284 [ 45.198402][ T4744] sp : ffff8000203072a0 [ 45.199084][ T4744] x29: ffff8000203073c0 x28: 00000000fffffff4 x27: ffff800020307560 [ 45.200499][ T4744] x26: 0000000000000000 x25: dfff800000000000 x24: ffff700004060e64 [ 45.201829][ T4744] x23: ffff0000e24844b0 x22: ffff0000de9e69a0 x21: ffff0000c172a000 [ 45.203088][ T4744] x20: 1fffe0001bd3cd3f x19: ffff0000de9e69f8 x18: 0000000000000000 [ 45.204428][ T4744] x17: 0000000000000000 x16: ffff80001135f958 x15: 0000000000000000 [ 45.205806][ T4744] x14: 0000000000000001 x13: 1fffe000341d09ab x12: 0000000000000000 [ 45.207240][ T4744] x11: ff80800008300a38 x10: 0000000000000000 x9 : 200c637a301c6e00 [ 45.208654][ T4744] x8 : 200c637a301c6e00 x7 : 0000000000000001 x6 : 0000000000000001 [ 45.210058][ T4744] x5 : ffff800020306bb8 x4 : ffff80001447f520 x3 : ffff80000850fcd0 [ 45.211438][ T4744] x2 : 0000000000000001 x1 : 0000000100000000 x0 : 0000000000000026 [ 45.212853][ T4744] Call trace: [ 45.213388][ T4744] btrfs_replace_file_extents+0xd18/0x1284 [ 45.214406][ T4744] __btrfs_prealloc_file_range+0x35c/0xb80 [ 45.215387][ T4744] btrfs_prealloc_file_range+0x60/0x7c [ 45.216343][ T4744] btrfs_fallocate+0xcb0/0x1720 [ 45.217177][ T4744] vfs_fallocate+0x4a4/0x5fc [ 45.217977][ T4744] ioctl_preallocate+0x234/0x2d4 [ 45.218785][ T4744] do_vfs_ioctl+0x1aa8/0x2404 [ 45.219546][ T4744] __arm64_sys_ioctl+0xe4/0x1c8 [ 45.220379][ T4744] invoke_syscall+0x98/0x28c [ 45.221180][ T4744] el0_svc_common+0x13c/0x258 [ 45.221921][ T4744] do_el0_svc+0x5c/0x140 [ 45.222612][ T4744] el0_svc+0x78/0x1d0 [ 45.223238][ T4744] el0t_64_sync_handler+0xcc/0xe4 [ 45.224036][ T4744] el0t_64_sync+0x1a0/0x1a4 [ 45.224765][ T4744] irq event stamp: 80284 [ 45.225452][ T4744] hardirqs last enabled at (80283): [] __up_console_sem+0xb4/0xfc [ 45.227047][ T4744] hardirqs last disabled at (80284): [] el1_dbg+0x24/0x80 [ 45.228488][ T4744] softirqs last enabled at (80260): [] handle_softirqs+0xa70/0xc14 [ 45.230183][ T4744] softirqs last disabled at (80247): [] __irq_exit_rcu+0x240/0x434 [ 45.231797][ T4744] ---[ end trace b71af0a6ec9a2ce8 ]--- [ 45.232940][ T4744] BTRFS: error (device loop0) in btrfs_replace_file_extents:2983: errno=-12 Out of memory [ 45.234534][ T4744] BTRFS info (device loop0): forced readonly [ 45.417069][ T4765] BTRFS: device fsid 24c7a497-3402-47dd-bef8-82358f5f30e0 devid 1 transid 8 /dev/loop0 scanned by syz-executor.0 (4765) [ 45.421702][ T4765] BTRFS info (device loop0): using crc32c (crc32c-generic) checksum algorithm [ 45.423578][ T4765] BTRFS info (device loop0): using free space tree [ 45.424861][ T4765] BTRFS info (device loop0): has skinny extents [ 45.434630][ T4765] BTRFS info (device loop0): enabling ssd optimizations [ 45.438386][ T4765] FAULT_INJECTION: forcing a failure. [ 45.438386][ T4765] name fail_page_alloc, interval 1, probability 0, space 0, times 0 [ 45.440933][ T4765] CPU: 0 PID: 4765 Comm: syz-executor.0 Tainted: G W syzkaller #0 [ 45.442412][ T4765] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/02/2026 [ 45.444065][ T4765] Call trace: [ 45.444601][ T4765] dump_backtrace+0x0/0x458 [ 45.445373][ T4765] show_stack+0x2c/0x3c [ 45.446075][ T4765] __dump_stack+0x30/0x40 [ 45.446844][ T4765] dump_stack_lvl+0xf4/0x15c [ 45.447653][ T4765] dump_stack+0x1c/0x5c [ 45.448359][ T4765] should_fail+0x3c8/0x520 [ 45.449152][ T4765] should_fail_alloc_page+0x74/0xa8 [ 45.450069][ T4765] prepare_alloc_pages+0x160/0x460 [ 45.450934][ T4765] __alloc_pages+0x108/0x474 [ 45.451687][ T4765] alloc_pages+0x34c/0x5c0 [ 45.452421][ T4765] new_slab+0xdc/0x53c 1970/01/01 00:00:45 executed programs: 13 [ 45.453123][ T4765] ___slab_alloc+0x6ac/0xd84 [ 45.453881][ T4765] __slab_alloc+0x68/0xc0 [ 45.454594][ T4765] kmem_cache_alloc+0x2a8/0x3d8 [ 45.455396][ T4765] btrfs_add_delayed_data_ref+0x174/0xd64 [ 45.456360][ T4765] btrfs_alloc_reserved_file_extent+0x1a8/0x2c8 [ 45.457330][ T4765] btrfs_insert_replace_extent+0x818/0x9b0 [ 45.458251][ T4765] btrfs_replace_file_extents+0x8a8/0x1284 [ 45.459139][ T4765] __btrfs_prealloc_file_range+0x35c/0xb80 [ 45.460054][ T4765] btrfs_prealloc_file_range+0x60/0x7c [ 45.460973][ T4765] btrfs_fallocate+0xcb0/0x1720 [ 45.461775][ T4765] vfs_fallocate+0x4a4/0x5fc [ 45.462512][ T4765] ioctl_preallocate+0x234/0x2d4 [ 45.463345][ T4765] do_vfs_ioctl+0x1aa8/0x2404 [ 45.464135][ T4765] __arm64_sys_ioctl+0xe4/0x1c8 [ 45.464954][ T4765] invoke_syscall+0x98/0x28c [ 45.465733][ T4765] el0_svc_common+0x13c/0x258 [ 45.466509][ T4765] do_el0_svc+0x5c/0x140 [ 45.467237][ T4765] el0_svc+0x78/0x1d0 [ 45.468074][ T4765] el0t_64_sync_handler+0xcc/0xe4 [ 45.469053][ T4765] el0t_64_sync+0x1a0/0x1a4 [ 45.659191][ T4786] BTRFS: device fsid 24c7a497-3402-47dd-bef8-82358f5f30e0 devid 1 transid 8 /dev/loop0 scanned by syz-executor.0 (4786) [ 45.663949][ T4786] BTRFS info (device loop0): using crc32c (crc32c-generic) checksum algorithm [ 45.665438][ T4786] BTRFS info (device loop0): using free space tree [ 45.666547][ T4786] BTRFS info (device loop0): has skinny extents [ 45.686398][ T4786] BTRFS info (device loop0): enabling ssd optimizations [ 45.689974][ T4786] FAULT_INJECTION: forcing a failure. [ 45.689974][ T4786] name failslab, interval 1, probability 0, space 0, times 0 [ 45.692441][ T4786] CPU: 0 PID: 4786 Comm: syz-executor.0 Tainted: G W syzkaller #0 [ 45.694011][ T4786] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/02/2026 [ 45.695675][ T4786] Call trace: [ 45.696205][ T4786] dump_backtrace+0x0/0x458 [ 45.696983][ T4786] show_stack+0x2c/0x3c [ 45.697685][ T4786] __dump_stack+0x30/0x40 [ 45.698436][ T4786] dump_stack_lvl+0xf4/0x15c [ 45.699212][ T4786] dump_stack+0x1c/0x5c [ 45.699946][ T4786] should_fail+0x3c8/0x520 [ 45.700706][ T4786] __should_failslab+0xbc/0x10c [ 45.701506][ T4786] should_failslab+0x10/0x28 [ 45.702299][ T4786] slab_pre_alloc_hook+0x64/0xe8 [ 45.703121][ T4786] kmem_cache_alloc+0x94/0x3d8 [ 45.703937][ T4786] btrfs_add_delayed_data_ref+0x3f0/0xd64 [ 45.704935][ T4786] btrfs_alloc_reserved_file_extent+0x1a8/0x2c8 [ 45.706023][ T4786] btrfs_insert_replace_extent+0x818/0x9b0 [ 45.707017][ T4786] btrfs_replace_file_extents+0x8a8/0x1284 [ 45.708018][ T4786] __btrfs_prealloc_file_range+0x35c/0xb80 [ 45.709042][ T4786] btrfs_prealloc_file_range+0x60/0x7c [ 45.709979][ T4786] btrfs_fallocate+0xcb0/0x1720 [ 45.710813][ T4786] vfs_fallocate+0x4a4/0x5fc [ 45.711613][ T4786] ioctl_preallocate+0x234/0x2d4 [ 45.712444][ T4786] do_vfs_ioctl+0x1aa8/0x2404 [ 45.713205][ T4786] __arm64_sys_ioctl+0xe4/0x1c8 [ 45.714188][ T4786] invoke_syscall+0x98/0x28c [ 45.715135][ T4786] el0_svc_common+0x13c/0x258 [ 45.716023][ T4786] do_el0_svc+0x5c/0x140 [ 45.716729][ T4786] el0_svc+0x78/0x1d0 [ 45.717435][ T4786] el0t_64_sync_handler+0xcc/0xe4 [ 45.718308][ T4786] el0t_64_sync+0x1a0/0x1a4 [ 45.719857][ T4786] ------------[ cut here ]------------ [ 45.721012][ T4786] WARNING: CPU: 0 PID: 4786 at fs/btrfs/file.c:2983 btrfs_replace_file_extents+0xd18/0x1284 [ 45.722712][ T4786] Modules linked in: [ 45.723373][ T4786] CPU: 0 PID: 4786 Comm: syz-executor.0 Tainted: G W syzkaller #0 [ 45.724924][ T4786] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/02/2026 [ 45.726512][ T4786] pstate: 62400005 (nZCv daif +PAN -UAO +TCO -DIT -SSBS BTYPE=--) [ 45.727758][ T4786] pc : btrfs_replace_file_extents+0xd18/0x1284 [ 45.728796][ T4786] lr : btrfs_replace_file_extents+0xd18/0x1284 [ 45.729841][ T4786] sp : ffff8000207772a0 [ 45.730621][ T4786] x29: ffff8000207773c0 x28: 00000000fffffff4 x27: ffff800020777560 [ 45.732042][ T4786] x26: 0000000000000000 x25: dfff800000000000 x24: ffff7000040eee64 [ 45.733445][ T4786] x23: ffff0000dea03ae0 x22: ffff0000dd7dbe70 x21: ffff0000c28bc300 [ 45.734843][ T4786] x20: 1fffe0001bafb7d9 x19: ffff0000dd7dbec8 x18: 0000000000000000 [ 45.736215][ T4786] x17: 0000000000000000 x16: ffff80001135f958 x15: 0000000000000000 [ 45.737588][ T4786] x14: 0000000000000001 x13: 1fffe000341cc7ab x12: 0000000000000000 [ 45.738982][ T4786] x11: ff80800008300a38 x10: 0000000000000000 x9 : 622595bc2f89ce00 [ 45.740375][ T4786] x8 : 622595bc2f89ce00 x7 : 0000000000000001 x6 : 0000000000000001 [ 45.741750][ T4786] x5 : ffff800020776bb8 x4 : ffff80001447f520 x3 : ffff80000850fcd0 [ 45.743187][ T4786] x2 : 0000000000000001 x1 : 0000000100000000 x0 : 0000000000000026 [ 45.744590][ T4786] Call trace: [ 45.745112][ T4786] btrfs_replace_file_extents+0xd18/0x1284 [ 45.746097][ T4786] __btrfs_prealloc_file_range+0x35c/0xb80 [ 45.747119][ T4786] btrfs_prealloc_file_range+0x60/0x7c [ 45.748066][ T4786] btrfs_fallocate+0xcb0/0x1720 [ 45.748878][ T4786] vfs_fallocate+0x4a4/0x5fc [ 45.749660][ T4786] ioctl_preallocate+0x234/0x2d4 [ 45.750538][ T4786] do_vfs_ioctl+0x1aa8/0x2404 [ 45.751378][ T4786] __arm64_sys_ioctl+0xe4/0x1c8 [ 45.752358][ T4786] invoke_syscall+0x98/0x28c [ 45.753246][ T4786] el0_svc_common+0x13c/0x258 [ 45.754048][ T4786] do_el0_svc+0x5c/0x140 [ 45.754906][ T4786] el0_svc+0x78/0x1d0 [ 45.755725][ T4786] el0t_64_sync_handler+0xcc/0xe4 [ 45.756747][ T4786] el0t_64_sync+0x1a0/0x1a4 [ 45.757663][ T4786] irq event stamp: 80118 [ 45.758507][ T4786] hardirqs last enabled at (80117): [] __up_console_sem+0xb4/0xfc [ 45.760434][ T4786] hardirqs last disabled at (80118): [] el1_dbg+0x24/0x80 [ 45.761969][ T4786] softirqs last enabled at (80090): [] handle_softirqs+0xa70/0xc14 [ 45.763657][ T4786] softirqs last disabled at (80069): [] __irq_exit_rcu+0x240/0x434 [ 45.765331][ T4786] ---[ end trace b71af0a6ec9a2ce9 ]--- [ 45.767071][ T4786] BTRFS: error (device loop0) in btrfs_replace_file_extents:2983: errno=-12 Out of memory [ 45.768747][ T4786] BTRFS info (device loop0): forced readonly [ 45.949845][ T4807] BTRFS: device fsid 24c7a497-3402-47dd-bef8-82358f5f30e0 devid 1 transid 8 /dev/loop0 scanned by syz-executor.0 (4807) [ 45.954169][ T4807] BTRFS info (device loop0): using crc32c (crc32c-generic) checksum algorithm [ 45.955801][ T4807] BTRFS info (device loop0): using free space tree [ 45.957003][ T4807] BTRFS info (device loop0): has skinny extents [ 45.971645][ T4807] BTRFS info (device loop0): enabling ssd optimizations [ 45.975709][ T4807] FAULT_INJECTION: forcing a failure. [ 45.975709][ T4807] name failslab, interval 1, probability 0, space 0, times 0 [ 45.977963][ T4807] CPU: 0 PID: 4807 Comm: syz-executor.0 Tainted: G W syzkaller #0 [ 45.979597][ T4807] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/02/2026 [ 45.981338][ T4807] Call trace: [ 45.981896][ T4807] dump_backtrace+0x0/0x458 [ 45.982673][ T4807] show_stack+0x2c/0x3c [ 45.983331][ T4807] __dump_stack+0x30/0x40 [ 45.984042][ T4807] dump_stack_lvl+0xf4/0x15c [ 45.984794][ T4807] dump_stack+0x1c/0x5c [ 45.985472][ T4807] should_fail+0x3c8/0x520 [ 45.986208][ T4807] __should_failslab+0xbc/0x10c [ 45.987035][ T4807] should_failslab+0x10/0x28 [ 45.987785][ T4807] slab_pre_alloc_hook+0x64/0xe8 [ 45.988628][ T4807] kmem_cache_alloc+0x94/0x3d8 [ 45.989446][ T4807] alloc_extent_map+0x28/0x128 [ 45.990268][ T4807] btrfs_drop_extent_cache+0x160/0xd60 [ 45.991186][ T4807] btrfs_drop_extents+0x2e8/0x2338 [ 45.992066][ T4807] btrfs_replace_file_extents+0x340/0x1284 [ 45.993038][ T4807] __btrfs_prealloc_file_range+0x35c/0xb80 [ 45.993989][ T4807] btrfs_prealloc_file_range+0x60/0x7c [ 45.994870][ T4807] btrfs_fallocate+0xcb0/0x1720 [ 45.995671][ T4807] vfs_fallocate+0x4a4/0x5fc [ 45.996421][ T4807] ioctl_preallocate+0x234/0x2d4 [ 45.997249][ T4807] do_vfs_ioctl+0x1aa8/0x2404 [ 45.998060][ T4807] __arm64_sys_ioctl+0xe4/0x1c8 [ 45.998906][ T4807] invoke_syscall+0x98/0x28c [ 45.999641][ T4807] el0_svc_common+0x13c/0x258 [ 46.000448][ T4807] do_el0_svc+0x5c/0x140 [ 46.001184][ T4807] el0_svc+0x78/0x1d0 [ 46.001928][ T4807] el0t_64_sync_handler+0xcc/0xe4 [ 46.002815][ T4807] el0t_64_sync+0x1a0/0x1a4 [ 46.190038][ T4828] BTRFS: device fsid 24c7a497-3402-47dd-bef8-82358f5f30e0 devid 1 transid 8 /dev/loop0 scanned by syz-executor.0 (4828) [ 46.193706][ T4828] BTRFS info (device loop0): using crc32c (crc32c-generic) checksum algorithm [ 46.195159][ T4828] BTRFS info (device loop0): using free space tree [ 46.196305][ T4828] BTRFS info (device loop0): has skinny extents [ 46.208905][ T4828] BTRFS info (device loop0): enabling ssd optimizations [ 46.213100][ T4828] FAULT_INJECTION: forcing a failure. [ 46.213100][ T4828] name failslab, interval 1, probability 0, space 0, times 0 [ 46.215289][ T4828] CPU: 0 PID: 4828 Comm: syz-executor.0 Tainted: G W syzkaller #0 [ 46.216760][ T4828] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/02/2026 [ 46.218438][ T4828] Call trace: [ 46.218982][ T4828] dump_backtrace+0x0/0x458 [ 46.219805][ T4828] show_stack+0x2c/0x3c [ 46.220514][ T4828] __dump_stack+0x30/0x40 [ 46.221376][ T4828] dump_stack_lvl+0xf4/0x15c [ 46.222301][ T4828] dump_stack+0x1c/0x5c [ 46.223066][ T4828] should_fail+0x3c8/0x520 [ 46.223855][ T4828] __should_failslab+0xbc/0x10c [ 46.224715][ T4828] should_failslab+0x10/0x28 [ 46.225541][ T4828] slab_pre_alloc_hook+0x64/0xe8 [ 46.226443][ T4828] kmem_cache_alloc+0x94/0x3d8 [ 46.227237][ T4828] btrfs_add_delayed_data_ref+0x3f0/0xd64 [ 46.228188][ T4828] btrfs_alloc_reserved_file_extent+0x1a8/0x2c8 [ 46.229278][ T4828] btrfs_insert_replace_extent+0x818/0x9b0 [ 46.230222][ T4828] btrfs_replace_file_extents+0x8a8/0x1284 [ 46.231178][ T4828] __btrfs_prealloc_file_range+0x35c/0xb80 [ 46.232129][ T4828] btrfs_prealloc_file_range+0x60/0x7c [ 46.232962][ T4828] btrfs_fallocate+0xcb0/0x1720 [ 46.233769][ T4828] vfs_fallocate+0x4a4/0x5fc [ 46.234612][ T4828] ioctl_preallocate+0x234/0x2d4 [ 46.235394][ T4828] do_vfs_ioctl+0x1aa8/0x2404 [ 46.236193][ T4828] __arm64_sys_ioctl+0xe4/0x1c8 [ 46.237073][ T4828] invoke_syscall+0x98/0x28c [ 46.237877][ T4828] el0_svc_common+0x13c/0x258 [ 46.238677][ T4828] do_el0_svc+0x5c/0x140 [ 46.239423][ T4828] el0_svc+0x78/0x1d0 [ 46.240068][ T4828] el0t_64_sync_handler+0xcc/0xe4 [ 46.240912][ T4828] el0t_64_sync+0x1a0/0x1a4 [ 46.243648][ T4828] ------------[ cut here ]------------ [ 46.244626][ T4828] WARNING: CPU: 0 PID: 4828 at fs/btrfs/file.c:2983 btrfs_replace_file_extents+0xd18/0x1284 [ 46.246352][ T4828] Modules linked in: [ 46.247028][ T4828] CPU: 0 PID: 4828 Comm: syz-executor.0 Tainted: G W syzkaller #0 [ 46.248602][ T4828] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/02/2026 [ 46.250242][ T4828] pstate: 62400005 (nZCv daif +PAN -UAO +TCO -DIT -SSBS BTYPE=--) [ 46.251503][ T4828] pc : btrfs_replace_file_extents+0xd18/0x1284 [ 46.252492][ T4828] lr : btrfs_replace_file_extents+0xd18/0x1284 [ 46.253515][ T4828] sp : ffff800020ef72a0 [ 46.254196][ T4828] x29: ffff800020ef73c0 x28: 00000000fffffff4 x27: ffff800020ef7560 [ 46.255536][ T4828] x26: 0000000000000000 x25: dfff800000000000 x24: ffff7000041dee64 [ 46.256942][ T4828] x23: ffff0000dea06bf0 x22: ffff0000de9cc2c0 x21: ffff0000cd146500 [ 46.258382][ T4828] x20: 1fffe0001bd39863 x19: ffff0000de9cc318 x18: 0000000000000000 [ 46.259746][ T4828] x17: 0000000000000000 x16: ffff80001135f958 x15: 0000000000000000 [ 46.261094][ T4828] x14: 0000000000000001 x13: 1fffe000341cc7ab x12: 0000000000000000 [ 46.262469][ T4828] x11: ff80800008300a38 x10: 0000000000000000 x9 : 3cd73db2a5b5c900 [ 46.263831][ T4828] x8 : 3cd73db2a5b5c900 x7 : 0000000000000001 x6 : 0000000000000001 [ 46.265173][ T4828] x5 : ffff800020ef6bb8 x4 : ffff80001447f520 x3 : ffff80000850fcd0 [ 46.266522][ T4828] x2 : 0000000000000001 x1 : 0000000100000000 x0 : 0000000000000026 [ 46.268041][ T4828] Call trace: [ 46.268642][ T4828] btrfs_replace_file_extents+0xd18/0x1284 [ 46.269677][ T4828] __btrfs_prealloc_file_range+0x35c/0xb80 [ 46.270684][ T4828] btrfs_prealloc_file_range+0x60/0x7c [ 46.271596][ T4828] btrfs_fallocate+0xcb0/0x1720 [ 46.272440][ T4828] vfs_fallocate+0x4a4/0x5fc [ 46.273255][ T4828] ioctl_preallocate+0x234/0x2d4 [ 46.274134][ T4828] do_vfs_ioctl+0x1aa8/0x2404 [ 46.274912][ T4828] __arm64_sys_ioctl+0xe4/0x1c8 [ 46.275840][ T4828] invoke_syscall+0x98/0x28c [ 46.276712][ T4828] el0_svc_common+0x13c/0x258 [ 46.277517][ T4828] do_el0_svc+0x5c/0x140 [ 46.278278][ T4828] el0_svc+0x78/0x1d0 [ 46.279081][ T4828] el0t_64_sync_handler+0xcc/0xe4 [ 46.280096][ T4828] el0t_64_sync+0x1a0/0x1a4 [ 46.280879][ T4828] irq event stamp: 79724 [ 46.281624][ T4828] hardirqs last enabled at (79723): [] __up_console_sem+0xb4/0xfc [ 46.283508][ T4828] hardirqs last disabled at (79724): [] el1_dbg+0x24/0x80 [ 46.285238][ T4828] softirqs last enabled at (79700): [] handle_softirqs+0xa70/0xc14 [ 46.287128][ T4828] softirqs last disabled at (79673): [] __irq_exit_rcu+0x240/0x434 [ 46.288985][ T4828] ---[ end trace b71af0a6ec9a2cea ]--- [ 46.291517][ T4828] BTRFS: error (device loop0) in btrfs_replace_file_extents:2983: errno=-12 Out of memory [ 46.293222][ T4828] BTRFS info (device loop0): forced readonly [ 46.479115][ T4849] BTRFS: device fsid 24c7a497-3402-47dd-bef8-82358f5f30e0 devid 1 transid 8 /dev/loop0 scanned by syz-executor.0 (4849) [ 46.483437][ T4849] BTRFS info (device loop0): using crc32c (crc32c-generic) checksum algorithm [ 46.485109][ T4849] BTRFS info (device loop0): using free space tree [ 46.486230][ T4849] BTRFS info (device loop0): has skinny extents [ 46.497014][ T4849] BTRFS info (device loop0): enabling ssd optimizations [ 46.500593][ T4849] FAULT_INJECTION: forcing a failure. [ 46.500593][ T4849] name failslab, interval 1, probability 0, space 0, times 0 [ 46.502944][ T4849] CPU: 1 PID: 4849 Comm: syz-executor.0 Tainted: G W syzkaller #0 [ 46.504387][ T4849] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/02/2026 [ 46.506058][ T4849] Call trace: [ 46.506568][ T4849] dump_backtrace+0x0/0x458 [ 46.507297][ T4849] show_stack+0x2c/0x3c [ 46.507944][ T4849] __dump_stack+0x30/0x40 [ 46.508651][ T4849] dump_stack_lvl+0xf4/0x15c [ 46.509426][ T4849] dump_stack+0x1c/0x5c [ 46.510109][ T4849] should_fail+0x3c8/0x520 [ 46.510854][ T4849] __should_failslab+0xbc/0x10c [ 46.511719][ T4849] should_failslab+0x10/0x28 [ 46.512460][ T4849] slab_pre_alloc_hook+0x64/0xe8 [ 46.513315][ T4849] kmem_cache_alloc+0x94/0x3d8 [ 46.514069][ T4849] btrfs_add_delayed_data_ref+0x174/0xd64 [ 46.515025][ T4849] btrfs_alloc_reserved_file_extent+0x1a8/0x2c8 [ 46.516026][ T4849] btrfs_insert_replace_extent+0x818/0x9b0 [ 46.516984][ T4849] btrfs_replace_file_extents+0x8a8/0x1284 [ 46.517963][ T4849] __btrfs_prealloc_file_range+0x35c/0xb80 [ 46.518923][ T4849] btrfs_prealloc_file_range+0x60/0x7c [ 46.519858][ T4849] btrfs_fallocate+0xcb0/0x1720 [ 46.520668][ T4849] vfs_fallocate+0x4a4/0x5fc [ 46.521401][ T4849] ioctl_preallocate+0x234/0x2d4 [ 46.522207][ T4849] do_vfs_ioctl+0x1aa8/0x2404 [ 46.522993][ T4849] __arm64_sys_ioctl+0xe4/0x1c8 [ 46.523838][ T4849] invoke_syscall+0x98/0x28c [ 46.524619][ T4849] el0_svc_common+0x13c/0x258 [ 46.525368][ T4849] do_el0_svc+0x5c/0x140 [ 46.526041][ T4849] el0_svc+0x78/0x1d0 [ 46.526732][ T4849] el0t_64_sync_handler+0xcc/0xe4 [ 46.527592][ T4849] el0t_64_sync+0x1a0/0x1a4 [ 46.529040][ T4849] ------------[ cut here ]------------ [ 46.530027][ T4849] WARNING: CPU: 1 PID: 4849 at fs/btrfs/file.c:2983 btrfs_replace_file_extents+0xd18/0x1284 [ 46.531684][ T4849] Modules linked in: [ 46.532344][ T4849] CPU: 1 PID: 4849 Comm: syz-executor.0 Tainted: G W syzkaller #0 [ 46.533975][ T4849] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/02/2026 [ 46.535787][ T4849] pstate: 62400005 (nZCv daif +PAN -UAO +TCO -DIT -SSBS BTYPE=--) [ 46.537144][ T4849] pc : btrfs_replace_file_extents+0xd18/0x1284 [ 46.538186][ T4849] lr : btrfs_replace_file_extents+0xd18/0x1284 [ 46.539212][ T4849] sp : ffff800020e272a0 [ 46.539917][ T4849] x29: ffff800020e273c0 x28: 00000000fffffff4 x27: ffff800020e27560 [ 46.541262][ T4849] x26: 0000000000000000 x25: dfff800000000000 x24: ffff7000041c4e64 [ 46.542594][ T4849] x23: ffff0000e24875c0 x22: ffff0000de9e6b00 x21: ffff0000ca011000 [ 46.543980][ T4849] x20: 1fffe0001bd3cd6b x19: ffff0000de9e6b58 x18: 0000000000000000 [ 46.545349][ T4849] x17: 0000000000000000 x16: ffff80001135f958 x15: 0000000000000000 [ 46.546725][ T4849] x14: 0000000000000001 x13: 1fffe000341d09ab x12: 0000000000000000 [ 46.548099][ T4849] x11: ff80800008300a38 x10: 0000000000000000 x9 : af31d1361fbf9a00 [ 46.549398][ T4849] x8 : af31d1361fbf9a00 x7 : 0000000000000001 x6 : 0000000000000001 [ 46.550720][ T4849] x5 : ffff800020e26bb8 x4 : ffff80001447f520 x3 : ffff80000850fcd0 [ 46.552073][ T4849] x2 : 0000000000000001 x1 : 0000000100000000 x0 : 0000000000000026 [ 46.553480][ T4849] Call trace: [ 46.554051][ T4849] btrfs_replace_file_extents+0xd18/0x1284 [ 46.555112][ T4849] __btrfs_prealloc_file_range+0x35c/0xb80 [ 46.556160][ T4849] btrfs_prealloc_file_range+0x60/0x7c [ 46.557149][ T4849] btrfs_fallocate+0xcb0/0x1720 [ 46.558031][ T4849] vfs_fallocate+0x4a4/0x5fc [ 46.558817][ T4849] ioctl_preallocate+0x234/0x2d4 [ 46.559664][ T4849] do_vfs_ioctl+0x1aa8/0x2404 [ 46.560492][ T4849] __arm64_sys_ioctl+0xe4/0x1c8 [ 46.561352][ T4849] invoke_syscall+0x98/0x28c [ 46.562126][ T4849] el0_svc_common+0x13c/0x258 [ 46.562955][ T4849] do_el0_svc+0x5c/0x140 [ 46.563698][ T4849] el0_svc+0x78/0x1d0 [ 46.564365][ T4849] el0t_64_sync_handler+0xcc/0xe4 [ 46.565232][ T4849] el0t_64_sync+0x1a0/0x1a4 [ 46.566005][ T4849] irq event stamp: 79868 [ 46.566705][ T4849] hardirqs last enabled at (79867): [] __up_console_sem+0xb4/0xfc [ 46.568320][ T4849] hardirqs last disabled at (79868): [] el1_dbg+0x24/0x80 [ 46.569780][ T4849] softirqs last enabled at (79848): [] handle_softirqs+0xa70/0xc14 [ 46.571410][ T4849] softirqs last disabled at (79831): [] __irq_exit_rcu+0x240/0x434 [ 46.571429][ T4555] Bluetooth: hci0: command 0x040f tx timeout [ 46.572938][ T4849] ---[ end trace b71af0a6ec9a2ceb ]--- [ 46.575663][ T4849] BTRFS: error (device loop0) in btrfs_replace_file_extents:2983: errno=-12 Out of memory [ 46.577426][ T4849] BTRFS info (device loop0): forced readonly [ 46.768191][ T4870] set_capacity_and_notify: 7 callbacks suppressed [ 46.768199][ T4870] loop0: detected capacity change from 0 to 32768 [ 46.772376][ T4870] BTRFS: device fsid 24c7a497-3402-47dd-bef8-82358f5f30e0 devid 1 transid 8 /dev/loop0 scanned by syz-executor.0 (4870) [ 46.777460][ T4870] BTRFS info (device loop0): using crc32c (crc32c-generic) checksum algorithm [ 46.778934][ T4870] BTRFS info (device loop0): using free space tree [ 46.780038][ T4870] BTRFS info (device loop0): has skinny extents [ 46.792103][ T4870] BTRFS info (device loop0): enabling ssd optimizations [ 46.795531][ T4870] FAULT_INJECTION: forcing a failure. [ 46.795531][ T4870] name failslab, interval 1, probability 0, space 0, times 0 [ 46.797665][ T4870] CPU: 1 PID: 4870 Comm: syz-executor.0 Tainted: G W syzkaller #0 [ 46.799160][ T4870] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/02/2026 [ 46.800742][ T4870] Call trace: [ 46.801217][ T4870] dump_backtrace+0x0/0x458 [ 46.801915][ T4870] show_stack+0x2c/0x3c [ 46.802578][ T4870] __dump_stack+0x30/0x40 [ 46.803302][ T4870] dump_stack_lvl+0xf4/0x15c [ 46.804075][ T4870] dump_stack+0x1c/0x5c [ 46.804790][ T4870] should_fail+0x3c8/0x520 [ 46.805536][ T4870] __should_failslab+0xbc/0x10c [ 46.806325][ T4870] should_failslab+0x10/0x28 [ 46.807086][ T4870] slab_pre_alloc_hook+0x64/0xe8 [ 46.807892][ T4870] kmem_cache_alloc+0x94/0x3d8 [ 46.808668][ T4870] btrfs_add_delayed_data_ref+0x3f0/0xd64 [ 46.809603][ T4870] btrfs_alloc_reserved_file_extent+0x1a8/0x2c8 [ 46.810635][ T4870] btrfs_insert_replace_extent+0x818/0x9b0 [ 46.811574][ T4870] btrfs_replace_file_extents+0x8a8/0x1284 [ 46.812532][ T4870] __btrfs_prealloc_file_range+0x35c/0xb80 [ 46.813449][ T4870] btrfs_prealloc_file_range+0x60/0x7c [ 46.814340][ T4870] btrfs_fallocate+0xcb0/0x1720 [ 46.815158][ T4870] vfs_fallocate+0x4a4/0x5fc [ 46.815879][ T4870] ioctl_preallocate+0x234/0x2d4 [ 46.816664][ T4870] do_vfs_ioctl+0x1aa8/0x2404 [ 46.817427][ T4870] __arm64_sys_ioctl+0xe4/0x1c8 [ 46.818303][ T4870] invoke_syscall+0x98/0x28c [ 46.819037][ T4870] el0_svc_common+0x13c/0x258 [ 46.819842][ T4870] do_el0_svc+0x5c/0x140 [ 46.820581][ T4870] el0_svc+0x78/0x1d0 [ 46.821243][ T4870] el0t_64_sync_handler+0xcc/0xe4 [ 46.822105][ T4870] el0t_64_sync+0x1a0/0x1a4 [ 46.824883][ T4870] ------------[ cut here ]------------ [ 46.825842][ T4870] WARNING: CPU: 1 PID: 4870 at fs/btrfs/file.c:2983 btrfs_replace_file_extents+0xd18/0x1284 [ 46.827372][ T4870] Modules linked in: [ 46.828107][ T4870] CPU: 1 PID: 4870 Comm: syz-executor.0 Tainted: G W syzkaller #0 [ 46.829855][ T4870] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/02/2026 [ 46.831797][ T4870] pstate: 62400005 (nZCv daif +PAN -UAO +TCO -DIT -SSBS BTYPE=--) [ 46.833210][ T4870] pc : btrfs_replace_file_extents+0xd18/0x1284 [ 46.834385][ T4870] lr : btrfs_replace_file_extents+0xd18/0x1284 [ 46.835512][ T4870] sp : ffff8000211272a0 [ 46.836277][ T4870] x29: ffff8000211273c0 x28: 00000000fffffff4 x27: ffff800021127560 [ 46.837709][ T4870] x26: 0000000000000000 x25: dfff800000000000 x24: ffff700004224e64 [ 46.839210][ T4870] x23: ffff0000e25093a0 x22: ffff0000de9e6c60 x21: ffff0000cfdce000 [ 46.840599][ T4870] x20: 1fffe0001bd3cd97 x19: ffff0000de9e6cb8 x18: 0000000000000000 [ 46.842010][ T4870] x17: 0000000000000000 x16: ffff80001135f958 x15: 0000000000000000 [ 46.843470][ T4870] x14: 0000000000000001 x13: 1fffe000341d09ab x12: 0000000000000000 [ 46.844858][ T4870] x11: ff80800008300a38 x10: 0000000000000000 x9 : cff0e0aae4d66300 [ 46.846296][ T4870] x8 : cff0e0aae4d66300 x7 : 0000000000000001 x6 : 0000000000000001 [ 46.847723][ T4870] x5 : ffff800021126bb8 x4 : ffff80001447f520 x3 : ffff80000850fcd0 [ 46.849190][ T4870] x2 : 0000000000000001 x1 : 0000000100000000 x0 : 0000000000000026 [ 46.850661][ T4870] Call trace: [ 46.851208][ T4870] btrfs_replace_file_extents+0xd18/0x1284 [ 46.852247][ T4870] __btrfs_prealloc_file_range+0x35c/0xb80 [ 46.853235][ T4870] btrfs_prealloc_file_range+0x60/0x7c [ 46.854153][ T4870] btrfs_fallocate+0xcb0/0x1720 [ 46.854958][ T4870] vfs_fallocate+0x4a4/0x5fc [ 46.855742][ T4870] ioctl_preallocate+0x234/0x2d4 [ 46.856532][ T4870] do_vfs_ioctl+0x1aa8/0x2404 [ 46.857328][ T4870] __arm64_sys_ioctl+0xe4/0x1c8 [ 46.858165][ T4870] invoke_syscall+0x98/0x28c [ 46.858930][ T4870] el0_svc_common+0x13c/0x258 [ 46.859735][ T4870] do_el0_svc+0x5c/0x140 [ 46.860449][ T4870] el0_svc+0x78/0x1d0 [ 46.861136][ T4870] el0t_64_sync_handler+0xcc/0xe4 [ 46.862019][ T4870] el0t_64_sync+0x1a0/0x1a4 [ 46.862804][ T4870] irq event stamp: 79732 [ 46.863544][ T4870] hardirqs last enabled at (79731): [] __up_console_sem+0xb4/0xfc [ 46.865184][ T4870] hardirqs last disabled at (79732): [] el1_dbg+0x24/0x80 [ 46.866677][ T4870] softirqs last enabled at (79708): [] handle_softirqs+0xa70/0xc14 [ 46.868253][ T4870] softirqs last disabled at (79509): [] __irq_exit_rcu+0x240/0x434 [ 46.869752][ T4870] ---[ end trace b71af0a6ec9a2cec ]--- [ 46.871733][ T4870] BTRFS: error (device loop0) in btrfs_replace_file_extents:2983: errno=-12 Out of memory [ 46.873451][ T4870] BTRFS info (device loop0): forced readonly [ 47.067570][ T4891] loop0: detected capacity change from 0 to 32768 [ 47.070287][ T4891] BTRFS: device fsid 24c7a497-3402-47dd-bef8-82358f5f30e0 devid 1 transid 8 /dev/loop0 scanned by syz-executor.0 (4891) [ 47.074984][ T4891] BTRFS info (device loop0): using crc32c (crc32c-generic) checksum algorithm [ 47.076522][ T4891] BTRFS info (device loop0): using free space tree [ 47.077540][ T4891] BTRFS info (device loop0): has skinny extents [ 47.085919][ T4891] BTRFS info (device loop0): enabling ssd optimizations [ 47.089668][ T4891] FAULT_INJECTION: forcing a failure. [ 47.089668][ T4891] name failslab, interval 1, probability 0, space 0, times 0 [ 47.092364][ T4891] CPU: 0 PID: 4891 Comm: syz-executor.0 Tainted: G W syzkaller #0 [ 47.094013][ T4891] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/02/2026 [ 47.095895][ T4891] Call trace: [ 47.096478][ T4891] dump_backtrace+0x0/0x458 [ 47.097268][ T4891] show_stack+0x2c/0x3c [ 47.097978][ T4891] __dump_stack+0x30/0x40 [ 47.098841][ T4891] dump_stack_lvl+0xf4/0x15c [ 47.099657][ T4891] dump_stack+0x1c/0x5c [ 47.100359][ T4891] should_fail+0x3c8/0x520 [ 47.101089][ T4891] __should_failslab+0xbc/0x10c [ 47.101898][ T4891] should_failslab+0x10/0x28 [ 47.102672][ T4891] slab_pre_alloc_hook+0x64/0xe8 [ 47.103512][ T4891] kmem_cache_alloc+0x94/0x3d8 [ 47.104261][ T4891] alloc_extent_map+0x28/0x128 [ 47.105054][ T4891] btrfs_drop_extent_cache+0x150/0xd60 [ 47.105962][ T4891] btrfs_drop_extents+0x2e8/0x2338 [ 47.106816][ T4891] btrfs_replace_file_extents+0x340/0x1284 [ 47.107796][ T4891] __btrfs_prealloc_file_range+0x35c/0xb80 [ 47.108734][ T4891] btrfs_prealloc_file_range+0x60/0x7c [ 47.109652][ T4891] btrfs_fallocate+0xcb0/0x1720 [ 47.110480][ T4891] vfs_fallocate+0x4a4/0x5fc [ 47.111317][ T4891] ioctl_preallocate+0x234/0x2d4 [ 47.112167][ T4891] do_vfs_ioctl+0x1aa8/0x2404 [ 47.112998][ T4891] __arm64_sys_ioctl+0xe4/0x1c8 [ 47.113797][ T4891] invoke_syscall+0x98/0x28c [ 47.114583][ T4891] el0_svc_common+0x13c/0x258 [ 47.115380][ T4891] do_el0_svc+0x5c/0x140 [ 47.116140][ T4891] el0_svc+0x78/0x1d0 [ 47.116882][ T4891] el0t_64_sync_handler+0xcc/0xe4 [ 47.117758][ T4891] el0t_64_sync+0x1a0/0x1a4 [ 47.317477][ T4912] loop0: detected capacity change from 0 to 32768 [ 47.320211][ T4912] BTRFS: device fsid 24c7a497-3402-47dd-bef8-82358f5f30e0 devid 1 transid 8 /dev/loop0 scanned by syz-executor.0 (4912) [ 47.323945][ T4912] BTRFS info (device loop0): using crc32c (crc32c-generic) checksum algorithm [ 47.325581][ T4912] BTRFS info (device loop0): using free space tree [ 47.326846][ T4912] BTRFS info (device loop0): has skinny extents [ 47.343704][ T4912] BTRFS info (device loop0): enabling ssd optimizations [ 47.347480][ T4912] FAULT_INJECTION: forcing a failure. [ 47.347480][ T4912] name failslab, interval 1, probability 0, space 0, times 0 [ 47.349885][ T4912] CPU: 0 PID: 4912 Comm: syz-executor.0 Tainted: G W syzkaller #0 [ 47.351472][ T4912] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/02/2026 [ 47.353192][ T4912] Call trace: [ 47.353726][ T4912] dump_backtrace+0x0/0x458 [ 47.354502][ T4912] show_stack+0x2c/0x3c [ 47.355240][ T4912] __dump_stack+0x30/0x40 [ 47.356022][ T4912] dump_stack_lvl+0xf4/0x15c [ 47.356866][ T4912] dump_stack+0x1c/0x5c [ 47.357629][ T4912] should_fail+0x3c8/0x520 [ 47.358445][ T4912] __should_failslab+0xbc/0x10c [ 47.359322][ T4912] should_failslab+0x10/0x28 [ 47.360149][ T4912] slab_pre_alloc_hook+0x64/0xe8 [ 47.361052][ T4912] kmem_cache_alloc+0x94/0x3d8 [ 47.361879][ T4912] alloc_extent_map+0x28/0x128 [ 47.362730][ T4912] btrfs_drop_extent_cache+0x160/0xd60 [ 47.363710][ T4912] btrfs_drop_extents+0x2e8/0x2338 [ 47.364631][ T4912] btrfs_replace_file_extents+0x340/0x1284 [ 47.365676][ T4912] __btrfs_prealloc_file_range+0x35c/0xb80 [ 47.366702][ T4912] btrfs_prealloc_file_range+0x60/0x7c [ 47.367635][ T4912] btrfs_fallocate+0xcb0/0x1720 [ 47.368422][ T4912] vfs_fallocate+0x4a4/0x5fc [ 47.369225][ T4912] ioctl_preallocate+0x234/0x2d4 [ 47.370066][ T4912] do_vfs_ioctl+0x1aa8/0x2404 [ 47.370836][ T4912] __arm64_sys_ioctl+0xe4/0x1c8 [ 47.371645][ T4912] invoke_syscall+0x98/0x28c [ 47.372414][ T4912] el0_svc_common+0x13c/0x258 [ 47.373235][ T4912] do_el0_svc+0x5c/0x140 [ 47.373942][ T4912] el0_svc+0x78/0x1d0 [ 47.374578][ T4912] el0t_64_sync_handler+0xcc/0xe4 [ 47.375401][ T4912] el0t_64_sync+0x1a0/0x1a4 [ 47.549081][ T4933] loop0: detected capacity change from 0 to 32768 [ 47.553209][ T4933] BTRFS: device fsid 24c7a497-3402-47dd-bef8-82358f5f30e0 devid 1 transid 8 /dev/loop0 scanned by syz-executor.0 (4933) [ 47.558528][ T4933] BTRFS info (device loop0): using crc32c (crc32c-generic) checksum algorithm [ 47.560245][ T4933] BTRFS info (device loop0): using free space tree [ 47.561862][ T4933] BTRFS info (device loop0): has skinny extents [ 47.570692][ T4933] BTRFS info (device loop0): enabling ssd optimizations [ 47.575237][ T4933] FAULT_INJECTION: forcing a failure. [ 47.575237][ T4933] name failslab, interval 1, probability 0, space 0, times 0 [ 47.577514][ T4933] CPU: 0 PID: 4933 Comm: syz-executor.0 Tainted: G W syzkaller #0 [ 47.578941][ T4933] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/02/2026 [ 47.580664][ T4933] Call trace: [ 47.581221][ T4933] dump_backtrace+0x0/0x458 [ 47.582013][ T4933] show_stack+0x2c/0x3c [ 47.582712][ T4933] __dump_stack+0x30/0x40 [ 47.583425][ T4933] dump_stack_lvl+0xf4/0x15c [ 47.584175][ T4933] dump_stack+0x1c/0x5c [ 47.584858][ T4933] should_fail+0x3c8/0x520 [ 47.585605][ T4933] __should_failslab+0xbc/0x10c [ 47.586444][ T4933] should_failslab+0x10/0x28 [ 47.587213][ T4933] slab_pre_alloc_hook+0x64/0xe8 [ 47.588015][ T4933] kmem_cache_alloc+0x94/0x3d8 [ 47.588851][ T4933] btrfs_add_delayed_data_ref+0x174/0xd64 [ 47.589799][ T4933] btrfs_alloc_reserved_file_extent+0x1a8/0x2c8 [ 47.590886][ T4933] btrfs_insert_replace_extent+0x818/0x9b0 [ 47.591866][ T4933] btrfs_replace_file_extents+0x8a8/0x1284 [ 47.592866][ T4933] __btrfs_prealloc_file_range+0x35c/0xb80 [ 47.593906][ T4933] btrfs_prealloc_file_range+0x60/0x7c [ 47.595019][ T4933] btrfs_fallocate+0xcb0/0x1720 [ 47.595887][ T4933] vfs_fallocate+0x4a4/0x5fc [ 47.596634][ T4933] ioctl_preallocate+0x234/0x2d4 [ 47.597456][ T4933] do_vfs_ioctl+0x1aa8/0x2404 [ 47.598266][ T4933] __arm64_sys_ioctl+0xe4/0x1c8 [ 47.599053][ T4933] invoke_syscall+0x98/0x28c [ 47.599793][ T4933] el0_svc_common+0x13c/0x258 [ 47.600577][ T4933] do_el0_svc+0x5c/0x140 [ 47.601323][ T4933] el0_svc+0x78/0x1d0 [ 47.602002][ T4933] el0t_64_sync_handler+0xcc/0xe4 [ 47.602860][ T4933] el0t_64_sync+0x1a0/0x1a4 [ 47.604507][ T4933] ------------[ cut here ]------------ [ 47.605536][ T4933] WARNING: CPU: 0 PID: 4933 at fs/btrfs/file.c:2983 btrfs_replace_file_extents+0xd18/0x1284 [ 47.607269][ T4933] Modules linked in: [ 47.607998][ T4933] CPU: 0 PID: 4933 Comm: syz-executor.0 Tainted: G W syzkaller #0 [ 47.609485][ T4933] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/02/2026 [ 47.611179][ T4933] pstate: 62400005 (nZCv daif +PAN -UAO +TCO -DIT -SSBS BTYPE=--) [ 47.612511][ T4933] pc : btrfs_replace_file_extents+0xd18/0x1284 [ 47.613595][ T4933] lr : btrfs_replace_file_extents+0xd18/0x1284 [ 47.614640][ T4933] sp : ffff8000214972a0 [ 47.615375][ T4933] x29: ffff8000214973c0 x28: 00000000fffffff4 x27: ffff800021497560 [ 47.616829][ T4933] x26: 0000000000000000 x25: dfff800000000000 x24: ffff700004292e64 [ 47.618418][ T4933] x23: ffff0000debac4b0 x22: ffff0000de9cc9a0 x21: ffff0000c7cb1b00 [ 47.619958][ T4933] x20: 1fffe0001bd3993f x19: ffff0000de9cc9f8 x18: 0000000000000000 [ 47.621473][ T4933] x17: 0000000000000000 x16: ffff80001135f958 x15: 0000000000000000 [ 47.622962][ T4933] x14: 0000000000000001 x13: 1fffe000341cc7ab x12: 0000000000000000 [ 47.624527][ T4933] x11: ff80800008300a38 x10: 0000000000000000 x9 : 2975ca3137905200 [ 47.625915][ T4933] x8 : 2975ca3137905200 x7 : 0000000000000001 x6 : 0000000000000001 [ 47.627367][ T4933] x5 : ffff800021496bb8 x4 : ffff80001447f520 x3 : ffff80000850fcd0 [ 47.629017][ T4933] x2 : 0000000000000001 x1 : 0000000100000000 x0 : 0000000000000026 [ 47.630600][ T4933] Call trace: [ 47.631178][ T4933] btrfs_replace_file_extents+0xd18/0x1284 [ 47.632229][ T4933] __btrfs_prealloc_file_range+0x35c/0xb80 [ 47.633406][ T4933] btrfs_prealloc_file_range+0x60/0x7c [ 47.634448][ T4933] btrfs_fallocate+0xcb0/0x1720 [ 47.635348][ T4933] vfs_fallocate+0x4a4/0x5fc [ 47.636245][ T4933] ioctl_preallocate+0x234/0x2d4 [ 47.637165][ T4933] do_vfs_ioctl+0x1aa8/0x2404 [ 47.638064][ T4933] __arm64_sys_ioctl+0xe4/0x1c8 [ 47.638999][ T4933] invoke_syscall+0x98/0x28c [ 47.639855][ T4933] el0_svc_common+0x13c/0x258 [ 47.640722][ T4933] do_el0_svc+0x5c/0x140 [ 47.641532][ T4933] el0_svc+0x78/0x1d0 [ 47.642264][ T4933] el0t_64_sync_handler+0xcc/0xe4 [ 47.643171][ T4933] el0t_64_sync+0x1a0/0x1a4 [ 47.643995][ T4933] irq event stamp: 80266 [ 47.644705][ T4933] hardirqs last enabled at (80265): [] __up_console_sem+0xb4/0xfc [ 47.646265][ T4933] hardirqs last disabled at (80266): [] el1_dbg+0x24/0x80 [ 47.647694][ T4933] softirqs last enabled at (80246): [] handle_softirqs+0xa70/0xc14 [ 47.649255][ T4933] softirqs last disabled at (80219): [] __irq_exit_rcu+0x240/0x434 [ 47.650843][ T4933] ---[ end trace b71af0a6ec9a2ced ]--- [ 47.652592][ T4933] BTRFS: error (device loop0) in btrfs_replace_file_extents:2983: errno=-12 Out of memory [ 47.654436][ T4933] BTRFS info (device loop0): forced readonly [ 47.835723][ T4954] loop0: detected capacity change from 0 to 32768 [ 47.838083][ T4954] BTRFS: device fsid 24c7a497-3402-47dd-bef8-82358f5f30e0 devid 1 transid 8 /dev/loop0 scanned by syz-executor.0 (4954) [ 47.841258][ T4954] BTRFS info (device loop0): using crc32c (crc32c-generic) checksum algorithm [ 47.843017][ T4954] BTRFS info (device loop0): using free space tree [ 47.844160][ T4954] BTRFS info (device loop0): has skinny extents [ 47.856751][ T4954] BTRFS info (device loop0): enabling ssd optimizations [ 47.860164][ T4954] FAULT_INJECTION: forcing a failure. [ 47.860164][ T4954] name failslab, interval 1, probability 0, space 0, times 0 [ 47.862464][ T4954] CPU: 1 PID: 4954 Comm: syz-executor.0 Tainted: G W syzkaller #0 [ 47.864033][ T4954] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/02/2026 [ 47.865703][ T4954] Call trace: [ 47.866239][ T4954] dump_backtrace+0x0/0x458 [ 47.866974][ T4954] show_stack+0x2c/0x3c [ 47.867653][ T4954] __dump_stack+0x30/0x40 [ 47.868381][ T4954] dump_stack_lvl+0xf4/0x15c [ 47.869164][ T4954] dump_stack+0x1c/0x5c [ 47.869831][ T4954] should_fail+0x3c8/0x520 [ 47.870597][ T4954] __should_failslab+0xbc/0x10c [ 47.871397][ T4954] should_failslab+0x10/0x28 [ 47.872130][ T4954] slab_pre_alloc_hook+0x64/0xe8 [ 47.872981][ T4954] kmem_cache_alloc+0x94/0x3d8 [ 47.873794][ T4954] btrfs_add_delayed_data_ref+0x3f0/0xd64 [ 47.874769][ T4954] btrfs_alloc_reserved_file_extent+0x1a8/0x2c8 [ 47.875870][ T4954] btrfs_insert_replace_extent+0x818/0x9b0 [ 47.876836][ T4954] btrfs_replace_file_extents+0x8a8/0x1284 [ 47.877784][ T4954] __btrfs_prealloc_file_range+0x35c/0xb80 [ 47.878725][ T4954] btrfs_prealloc_file_range+0x60/0x7c [ 47.879600][ T4954] btrfs_fallocate+0xcb0/0x1720 [ 47.880373][ T4954] vfs_fallocate+0x4a4/0x5fc [ 47.881138][ T4954] ioctl_preallocate+0x234/0x2d4 [ 47.881928][ T4954] do_vfs_ioctl+0x1aa8/0x2404 [ 47.882731][ T4954] __arm64_sys_ioctl+0xe4/0x1c8 [ 47.883525][ T4954] invoke_syscall+0x98/0x28c [ 47.884289][ T4954] el0_svc_common+0x13c/0x258 [ 47.885072][ T4954] do_el0_svc+0x5c/0x140 [ 47.885785][ T4954] el0_svc+0x78/0x1d0 [ 47.886448][ T4954] el0t_64_sync_handler+0xcc/0xe4 [ 47.887303][ T4954] el0t_64_sync+0x1a0/0x1a4 [ 47.888809][ T4954] ------------[ cut here ]------------ [ 47.889856][ T4954] WARNING: CPU: 1 PID: 4954 at fs/btrfs/file.c:2983 btrfs_replace_file_extents+0xd18/0x1284 [ 47.891613][ T4954] Modules linked in: [ 47.892295][ T4954] CPU: 1 PID: 4954 Comm: syz-executor.0 Tainted: G W syzkaller #0 [ 47.893806][ T4954] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/02/2026 [ 47.895419][ T4954] pstate: 62400005 (nZCv daif +PAN -UAO +TCO -DIT -SSBS BTYPE=--) [ 47.896775][ T4954] pc : btrfs_replace_file_extents+0xd18/0x1284 [ 47.897924][ T4954] lr : btrfs_replace_file_extents+0xd18/0x1284 [ 47.899002][ T4954] sp : ffff800020dc72a0 [ 47.899699][ T4954] x29: ffff800020dc73c0 x28: 00000000fffffff4 x27: ffff800020dc7560 [ 47.901130][ T4954] x26: 0000000000000000 x25: dfff800000000000 x24: ffff7000041b8e64 [ 47.902692][ T4954] x23: ffff0000e2509d70 x22: ffff0000de9e6dc0 x21: ffff0000d4f99b00 [ 47.904191][ T4954] x20: 1fffe0001bd3cdc3 x19: ffff0000de9e6e18 x18: 0000000000000000 [ 47.905686][ T4954] x17: 0000000000000000 x16: ffff80001135f958 x15: 0000000000000000 [ 47.907048][ T4954] x14: 0000000000000001 x13: 1fffe000341d09ab x12: 0000000000000000 [ 47.908431][ T4954] x11: ff80800008300a38 x10: 0000000000000000 x9 : 1eff52948a31d400 [ 47.910031][ T4954] x8 : 1eff52948a31d400 x7 : 0000000000000001 x6 : 0000000000000001 [ 47.911560][ T4954] x5 : ffff800020dc6bb8 x4 : ffff80001447f520 x3 : ffff80000850fcd0 [ 47.912906][ T4954] x2 : 0000000000000001 x1 : 0000000100000000 x0 : 0000000000000026 [ 47.914333][ T4954] Call trace: [ 47.914948][ T4954] btrfs_replace_file_extents+0xd18/0x1284 [ 47.916017][ T4954] __btrfs_prealloc_file_range+0x35c/0xb80 [ 47.917117][ T4954] btrfs_prealloc_file_range+0x60/0x7c [ 47.918041][ T4954] btrfs_fallocate+0xcb0/0x1720 [ 47.918811][ T4954] vfs_fallocate+0x4a4/0x5fc [ 47.919528][ T4954] ioctl_preallocate+0x234/0x2d4 [ 47.920374][ T4954] do_vfs_ioctl+0x1aa8/0x2404 [ 47.921100][ T4954] __arm64_sys_ioctl+0xe4/0x1c8 [ 47.921945][ T4954] invoke_syscall+0x98/0x28c [ 47.922705][ T4954] el0_svc_common+0x13c/0x258 [ 47.923465][ T4954] do_el0_svc+0x5c/0x140 [ 47.924182][ T4954] el0_svc+0x78/0x1d0 [ 47.924837][ T4954] el0t_64_sync_handler+0xcc/0xe4 [ 47.925652][ T4954] el0t_64_sync+0x1a0/0x1a4 [ 47.926405][ T4954] irq event stamp: 79538 [ 47.927101][ T4954] hardirqs last enabled at (79537): [] __up_console_sem+0xb4/0xfc [ 47.928706][ T4954] hardirqs last disabled at (79538): [] el1_dbg+0x24/0x80 [ 47.930236][ T4954] softirqs last enabled at (79514): [] handle_softirqs+0xa70/0xc14 [ 47.931833][ T4954] softirqs last disabled at (79423): [] __irq_exit_rcu+0x240/0x434 [ 47.933393][ T4954] ---[ end trace b71af0a6ec9a2cee ]--- [ 47.935097][ T4954] BTRFS: error (device loop0) in btrfs_replace_file_extents:2983: errno=-12 Out of memory [ 47.936648][ T4954] BTRFS info (device loop0): forced readonly [ 48.107183][ T4975] loop0: detected capacity change from 0 to 32768 [ 48.109939][ T4975] BTRFS: device fsid 24c7a497-3402-47dd-bef8-82358f5f30e0 devid 1 transid 8 /dev/loop0 scanned by syz-executor.0 (4975) [ 48.115226][ T4975] BTRFS info (device loop0): using crc32c (crc32c-generic) checksum algorithm [ 48.116865][ T4975] BTRFS info (device loop0): using free space tree [ 48.117985][ T4975] BTRFS info (device loop0): has skinny extents [ 48.129061][ T4975] BTRFS info (device loop0): enabling ssd optimizations [ 48.133246][ T4975] FAULT_INJECTION: forcing a failure. [ 48.133246][ T4975] name failslab, interval 1, probability 0, space 0, times 0 [ 48.135613][ T4975] CPU: 0 PID: 4975 Comm: syz-executor.0 Tainted: G W syzkaller #0 [ 48.137105][ T4975] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/02/2026 [ 48.139059][ T4975] Call trace: [ 48.139698][ T4975] dump_backtrace+0x0/0x458 [ 48.140529][ T4975] show_stack+0x2c/0x3c [ 48.141273][ T4975] __dump_stack+0x30/0x40 [ 48.142065][ T4975] dump_stack_lvl+0xf4/0x15c [ 48.142907][ T4975] dump_stack+0x1c/0x5c [ 48.143667][ T4975] should_fail+0x3c8/0x520 [ 48.144477][ T4975] __should_failslab+0xbc/0x10c [ 48.145350][ T4975] should_failslab+0x10/0x28 [ 48.146204][ T4975] slab_pre_alloc_hook+0x64/0xe8 [ 48.147122][ T4975] kmem_cache_alloc+0x94/0x3d8 [ 48.148054][ T4975] btrfs_add_delayed_data_ref+0x174/0xd64 [ 48.149094][ T4975] btrfs_alloc_reserved_file_extent+0x1a8/0x2c8 [ 48.150315][ T4975] btrfs_insert_replace_extent+0x818/0x9b0 [ 48.151449][ T4975] btrfs_replace_file_extents+0x8a8/0x1284 [ 48.152500][ T4975] __btrfs_prealloc_file_range+0x35c/0xb80 [ 48.153573][ T4975] btrfs_prealloc_file_range+0x60/0x7c [ 48.154615][ T4975] btrfs_fallocate+0xcb0/0x1720 [ 48.155523][ T4975] vfs_fallocate+0x4a4/0x5fc [ 48.156368][ T4975] ioctl_preallocate+0x234/0x2d4 [ 48.157380][ T4975] do_vfs_ioctl+0x1aa8/0x2404 [ 48.158235][ T4975] __arm64_sys_ioctl+0xe4/0x1c8 [ 48.159055][ T4975] invoke_syscall+0x98/0x28c [ 48.159912][ T4975] el0_svc_common+0x13c/0x258 [ 48.160754][ T4975] do_el0_svc+0x5c/0x140 [ 48.161492][ T4975] el0_svc+0x78/0x1d0 [ 48.162131][ T4975] el0t_64_sync_handler+0xcc/0xe4 [ 48.162921][ T4975] el0t_64_sync+0x1a0/0x1a4 [ 48.165398][ T4975] ------------[ cut here ]------------ [ 48.166632][ T4975] WARNING: CPU: 0 PID: 4975 at fs/btrfs/file.c:2983 btrfs_replace_file_extents+0xd18/0x1284 [ 48.168285][ T4975] Modules linked in: [ 48.168938][ T4975] CPU: 0 PID: 4975 Comm: syz-executor.0 Tainted: G W syzkaller #0 [ 48.170449][ T4975] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/02/2026 [ 48.172235][ T4975] pstate: 62400005 (nZCv daif +PAN -UAO +TCO -DIT -SSBS BTYPE=--) [ 48.173492][ T4975] pc : btrfs_replace_file_extents+0xd18/0x1284 [ 48.174516][ T4975] lr : btrfs_replace_file_extents+0xd18/0x1284 [ 48.175580][ T4975] sp : ffff8000216572a0 [ 48.176305][ T4975] x29: ffff8000216573c0 x28: 00000000fffffff4 x27: ffff800021657560 [ 48.177981][ T4975] x26: 0000000000000000 x25: dfff800000000000 x24: ffff7000042cae64 [ 48.179505][ T4975] x23: ffff0000debae220 x22: ffff0000de9ccb00 x21: ffff0000c9e80500 [ 48.180903][ T4975] x20: 1fffe0001bd3996b x19: ffff0000de9ccb58 x18: 0000000000000002 [ 48.182311][ T4975] x17: 0000000040000000 x16: ffff80001135f958 x15: 0000000000000002 [ 48.183633][ T4975] x14: 0000000000000001 x13: 1fffe000341cc7ab x12: 0000000000000000 [ 48.185041][ T4975] x11: ff80800008300a38 x10: 0000000000000000 x9 : 5da8a09d0c206c00 [ 48.186442][ T4975] x8 : 5da8a09d0c206c00 x7 : 0000000000000000 x6 : 0000000000000000 [ 48.187788][ T4975] x5 : 0000000000000080 x4 : 0000000000000000 x3 : ffff80000850fcd0 [ 48.189076][ T4975] x2 : 0000000000000001 x1 : 0000000100000000 x0 : 0000000000000026 [ 48.190451][ T4975] Call trace: [ 48.190990][ T4975] btrfs_replace_file_extents+0xd18/0x1284 [ 48.191988][ T4975] __btrfs_prealloc_file_range+0x35c/0xb80 [ 48.193010][ T4975] btrfs_prealloc_file_range+0x60/0x7c [ 48.193978][ T4975] btrfs_fallocate+0xcb0/0x1720 [ 48.194811][ T4975] vfs_fallocate+0x4a4/0x5fc [ 48.195592][ T4975] ioctl_preallocate+0x234/0x2d4 [ 48.196436][ T4975] do_vfs_ioctl+0x1aa8/0x2404 [ 48.197225][ T4975] __arm64_sys_ioctl+0xe4/0x1c8 [ 48.198101][ T4975] invoke_syscall+0x98/0x28c [ 48.198982][ T4975] el0_svc_common+0x13c/0x258 [ 48.199798][ T4975] do_el0_svc+0x5c/0x140 [ 48.200499][ T4975] el0_svc+0x78/0x1d0 [ 48.201118][ T4975] el0t_64_sync_handler+0xcc/0xe4 [ 48.201930][ T4975] el0t_64_sync+0x1a0/0x1a4 [ 48.202709][ T4975] irq event stamp: 79682 [ 48.203420][ T4975] hardirqs last enabled at (79681): [] finish_lock_switch+0xb0/0x1c8 [ 48.205075][ T4975] hardirqs last disabled at (79682): [] el1_dbg+0x24/0x80 [ 48.206539][ T4975] softirqs last enabled at (79658): [] handle_softirqs+0xa70/0xc14 [ 48.208256][ T4975] softirqs last disabled at (79569): [] __irq_exit_rcu+0x240/0x434 [ 48.209882][ T4975] ---[ end trace b71af0a6ec9a2cef ]--- [ 48.212929][ T4975] BTRFS: error (device loop0) in btrfs_replace_file_extents:2983: errno=-12 Out of memory [ 48.214669][ T4975] BTRFS info (device loop0): forced readonly [ 48.418438][ T4996] loop0: detected capacity change from 0 to 32768 [ 48.423064][ T4996] BTRFS: device fsid 24c7a497-3402-47dd-bef8-82358f5f30e0 devid 1 transid 8 /dev/loop0 scanned by syz-executor.0 (4996) [ 48.427566][ T4996] BTRFS info (device loop0): using crc32c (crc32c-generic) checksum algorithm [ 48.429337][ T4996] BTRFS info (device loop0): using free space tree [ 48.430585][ T4996] BTRFS info (device loop0): has skinny extents [ 48.443391][ T4996] BTRFS info (device loop0): enabling ssd optimizations [ 48.447211][ T4996] FAULT_INJECTION: forcing a failure. [ 48.447211][ T4996] name failslab, interval 1, probability 0, space 0, times 0 [ 48.449492][ T4996] CPU: 1 PID: 4996 Comm: syz-executor.0 Tainted: G W syzkaller #0 [ 48.451057][ T4996] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/02/2026 [ 48.452666][ T4996] Call trace: [ 48.453183][ T4996] dump_backtrace+0x0/0x458 [ 48.453959][ T4996] show_stack+0x2c/0x3c [ 48.454645][ T4996] __dump_stack+0x30/0x40 [ 48.455357][ T4996] dump_stack_lvl+0xf4/0x15c [ 48.456103][ T4996] dump_stack+0x1c/0x5c [ 48.456807][ T4996] should_fail+0x3c8/0x520 [ 48.457551][ T4996] __should_failslab+0xbc/0x10c [ 48.458390][ T4996] should_failslab+0x10/0x28 [ 48.459117][ T4996] slab_pre_alloc_hook+0x64/0xe8 [ 48.459953][ T4996] kmem_cache_alloc+0x94/0x3d8 [ 48.460908][ T4996] btrfs_add_delayed_data_ref+0x3f0/0xd64 [ 48.462095][ T4996] btrfs_alloc_reserved_file_extent+0x1a8/0x2c8 [ 48.463197][ T4996] btrfs_insert_replace_extent+0x818/0x9b0 [ 48.464143][ T4996] btrfs_replace_file_extents+0x8a8/0x1284 [ 48.465136][ T4996] __btrfs_prealloc_file_range+0x35c/0xb80 [ 48.466135][ T4996] btrfs_prealloc_file_range+0x60/0x7c [ 48.467062][ T4996] btrfs_fallocate+0xcb0/0x1720 [ 48.467873][ T4996] vfs_fallocate+0x4a4/0x5fc [ 48.468640][ T4996] ioctl_preallocate+0x234/0x2d4 [ 48.469423][ T4996] do_vfs_ioctl+0x1aa8/0x2404 [ 48.470246][ T4996] __arm64_sys_ioctl+0xe4/0x1c8 [ 48.470996][ T4996] invoke_syscall+0x98/0x28c [ 48.471732][ T4996] el0_svc_common+0x13c/0x258 [ 48.472473][ T4996] do_el0_svc+0x5c/0x140 [ 48.473172][ T4996] el0_svc+0x78/0x1d0 [ 48.473821][ T4996] el0t_64_sync_handler+0xcc/0xe4 [ 48.474642][ T4996] el0t_64_sync+0x1a0/0x1a4 [ 48.476243][ T4996] ------------[ cut here ]------------ [ 48.477210][ T4996] WARNING: CPU: 1 PID: 4996 at fs/btrfs/file.c:2983 btrfs_replace_file_extents+0xd18/0x1284 [ 48.478838][ T4996] Modules linked in: [ 48.479515][ T4996] CPU: 1 PID: 4996 Comm: syz-executor.0 Tainted: G W syzkaller #0 [ 48.481068][ T4996] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/02/2026 [ 48.482668][ T4996] pstate: 62400005 (nZCv daif +PAN -UAO +TCO -DIT -SSBS BTYPE=--) [ 48.483958][ T4996] pc : btrfs_replace_file_extents+0xd18/0x1284 [ 48.484969][ T4996] lr : btrfs_replace_file_extents+0xd18/0x1284 [ 48.485964][ T4996] sp : ffff8000214872a0 [ 48.486655][ T4996] x29: ffff8000214873c0 x28: 00000000fffffff4 x27: ffff800021487560 [ 48.488018][ T4996] x26: 0000000000000000 x25: dfff800000000000 x24: ffff700004290e64 [ 48.489414][ T4996] x23: ffff0000deb88000 x22: ffff0000de9e6160 x21: ffff0000c282c200 [ 48.490714][ T4996] x20: 1fffe0001bd3cc37 x19: ffff0000de9e61b8 x18: 0000000000000000 [ 48.492025][ T4996] x17: 0000000000000000 x16: ffff80001135f958 x15: 0000000000000000 [ 48.493421][ T4996] x14: 0000000000000001 x13: 1fffe000341d09ab x12: 0000000000000000 [ 48.494761][ T4996] x11: ff80800008300a38 x10: 0000000000000000 x9 : 5776ed189d740200 [ 48.496082][ T4996] x8 : 5776ed189d740200 x7 : 0000000000000001 x6 : 0000000000000001 [ 48.497549][ T4996] x5 : ffff800021486bb8 x4 : ffff80001447f520 x3 : ffff80000850fcd0 [ 48.499036][ T4996] x2 : 0000000000000001 x1 : 0000000100000000 x0 : 0000000000000026 [ 48.500442][ T4996] Call trace: [ 48.501000][ T4996] btrfs_replace_file_extents+0xd18/0x1284 [ 48.501933][ T4996] __btrfs_prealloc_file_range+0x35c/0xb80 [ 48.502881][ T4996] btrfs_prealloc_file_range+0x60/0x7c [ 48.503766][ T4996] btrfs_fallocate+0xcb0/0x1720 [ 48.504613][ T4996] vfs_fallocate+0x4a4/0x5fc [ 48.505413][ T4996] ioctl_preallocate+0x234/0x2d4 [ 48.506193][ T4996] do_vfs_ioctl+0x1aa8/0x2404 [ 48.506938][ T4996] __arm64_sys_ioctl+0xe4/0x1c8 [ 48.507739][ T4996] invoke_syscall+0x98/0x28c [ 48.508522][ T4996] el0_svc_common+0x13c/0x258 [ 48.509322][ T4996] do_el0_svc+0x5c/0x140 [ 48.510057][ T4996] el0_svc+0x78/0x1d0 [ 48.510732][ T4996] el0t_64_sync_handler+0xcc/0xe4 [ 48.511657][ T4996] el0t_64_sync+0x1a0/0x1a4 [ 48.512422][ T4996] irq event stamp: 80732 [ 48.513114][ T4996] hardirqs last enabled at (80731): [] __up_console_sem+0xb4/0xfc [ 48.514692][ T4996] hardirqs last disabled at (80732): [] el1_dbg+0x24/0x80 [ 48.516158][ T4996] softirqs last enabled at (80708): [] handle_softirqs+0xa70/0xc14 [ 48.517804][ T4996] softirqs last disabled at (80647): [] __irq_exit_rcu+0x240/0x434 [ 48.519417][ T4996] ---[ end trace b71af0a6ec9a2cf0 ]--- [ 48.521258][ T4996] BTRFS: error (device loop0) in btrfs_replace_file_extents:2983: errno=-12 Out of memory [ 48.523717][ T4996] BTRFS info (device loop0): forced readonly [ 48.651384][ T7] Bluetooth: hci0: command 0x0419 tx timeout [ 48.701084][ T5017] loop0: detected capacity change from 0 to 32768 [ 48.705468][ T5017] BTRFS: device fsid 24c7a497-3402-47dd-bef8-82358f5f30e0 devid 1 transid 8 /dev/loop0 scanned by syz-executor.0 (5017) [ 48.713439][ T5017] BTRFS info (device loop0): using crc32c (crc32c-generic) checksum algorithm [ 48.714904][ T5017] BTRFS info (device loop0): using free space tree [ 48.715925][ T5017] BTRFS info (device loop0): has skinny extents [ 48.733758][ T5017] BTRFS info (device loop0): enabling ssd optimizations [ 48.738146][ T5017] FAULT_INJECTION: forcing a failure. [ 48.738146][ T5017] name failslab, interval 1, probability 0, space 0, times 0 [ 48.740344][ T5017] CPU: 0 PID: 5017 Comm: syz-executor.0 Tainted: G W syzkaller #0 [ 48.741863][ T5017] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/02/2026 [ 48.743553][ T5017] Call trace: [ 48.744126][ T5017] dump_backtrace+0x0/0x458 [ 48.744913][ T5017] show_stack+0x2c/0x3c [ 48.745615][ T5017] __dump_stack+0x30/0x40 [ 48.746329][ T5017] dump_stack_lvl+0xf4/0x15c [ 48.747086][ T5017] dump_stack+0x1c/0x5c [ 48.747820][ T5017] should_fail+0x3c8/0x520 [ 48.748568][ T5017] __should_failslab+0xbc/0x10c [ 48.749399][ T5017] should_failslab+0x10/0x28 [ 48.750164][ T5017] slab_pre_alloc_hook+0x64/0xe8 [ 48.750985][ T5017] kmem_cache_alloc+0x94/0x3d8 [ 48.751795][ T5017] btrfs_add_delayed_data_ref+0x3f0/0xd64 [ 48.752746][ T5017] btrfs_alloc_reserved_file_extent+0x1a8/0x2c8 [ 48.753765][ T5017] btrfs_insert_replace_extent+0x818/0x9b0 [ 48.754764][ T5017] btrfs_replace_file_extents+0x8a8/0x1284 [ 48.755788][ T5017] __btrfs_prealloc_file_range+0x35c/0xb80 [ 48.756800][ T5017] btrfs_prealloc_file_range+0x60/0x7c [ 48.757709][ T5017] btrfs_fallocate+0xcb0/0x1720 [ 48.758526][ T5017] vfs_fallocate+0x4a4/0x5fc [ 48.759285][ T5017] ioctl_preallocate+0x234/0x2d4 [ 48.760161][ T5017] do_vfs_ioctl+0x1aa8/0x2404 [ 48.760977][ T5017] __arm64_sys_ioctl+0xe4/0x1c8 [ 48.761796][ T5017] invoke_syscall+0x98/0x28c [ 48.762542][ T5017] el0_svc_common+0x13c/0x258 [ 48.763340][ T5017] do_el0_svc+0x5c/0x140 [ 48.764099][ T5017] el0_svc+0x78/0x1d0 [ 48.764770][ T5017] el0t_64_sync_handler+0xcc/0xe4 [ 48.765613][ T5017] el0t_64_sync+0x1a0/0x1a4 [ 48.767943][ T5017] ------------[ cut here ]------------ [ 48.768962][ T5017] WARNING: CPU: 0 PID: 5017 at fs/btrfs/file.c:2983 btrfs_replace_file_extents+0xd18/0x1284 [ 48.770729][ T5017] Modules linked in: [ 48.771374][ T5017] CPU: 0 PID: 5017 Comm: syz-executor.0 Tainted: G W syzkaller #0 [ 48.772944][ T5017] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/02/2026 [ 48.774618][ T5017] pstate: 62400005 (nZCv daif +PAN -UAO +TCO -DIT -SSBS BTYPE=--) [ 48.775983][ T5017] pc : btrfs_replace_file_extents+0xd18/0x1284 [ 48.777060][ T5017] lr : btrfs_replace_file_extents+0xd18/0x1284 [ 48.778169][ T5017] sp : ffff8000219172a0 [ 48.778819][ T5017] x29: ffff8000219173c0 x28: 00000000fffffff4 x27: ffff800021917560 [ 48.780100][ T5017] x26: 0000000000000000 x25: dfff800000000000 x24: ffff700004322e64 [ 48.781383][ T5017] x23: ffff0000debaf5c0 x22: ffff0000de9ccc60 x21: ffff0000c9b47000 [ 48.782675][ T5017] x20: 1fffe0001bd39997 x19: ffff0000de9cccb8 x18: 0000000000000000 [ 48.784002][ T5017] x17: 0000000000000000 x16: ffff80001135f958 x15: 0000000000000000 [ 48.785253][ T5017] x14: 0000000000000001 x13: 1fffe000341cc7ab x12: 0000000000000000 [ 48.786554][ T5017] x11: ff80800008300a38 x10: 0000000000000000 x9 : 676ebb2e5a316100 [ 48.787846][ T5017] x8 : 676ebb2e5a316100 x7 : 0000000000000001 x6 : 0000000000000001 [ 48.789179][ T5017] x5 : ffff800021916bb8 x4 : ffff80001447f520 x3 : ffff80000850fcd0 [ 48.790597][ T5017] x2 : 0000000000000001 x1 : 0000000100000000 x0 : 0000000000000026 [ 48.791889][ T5017] Call trace: [ 48.792423][ T5017] btrfs_replace_file_extents+0xd18/0x1284 [ 48.793412][ T5017] __btrfs_prealloc_file_range+0x35c/0xb80 [ 48.794441][ T5017] btrfs_prealloc_file_range+0x60/0x7c [ 48.795381][ T5017] btrfs_fallocate+0xcb0/0x1720 [ 48.796168][ T5017] vfs_fallocate+0x4a4/0x5fc [ 48.796955][ T5017] ioctl_preallocate+0x234/0x2d4 [ 48.797818][ T5017] do_vfs_ioctl+0x1aa8/0x2404 [ 48.798584][ T5017] __arm64_sys_ioctl+0xe4/0x1c8 [ 48.799337][ T5017] invoke_syscall+0x98/0x28c [ 48.800075][ T5017] el0_svc_common+0x13c/0x258 [ 48.800839][ T5017] do_el0_svc+0x5c/0x140 [ 48.801555][ T5017] el0_svc+0x78/0x1d0 [ 48.802253][ T5017] el0t_64_sync_handler+0xcc/0xe4 [ 48.803117][ T5017] el0t_64_sync+0x1a0/0x1a4 [ 48.803886][ T5017] irq event stamp: 80728 [ 48.804600][ T5017] hardirqs last enabled at (80727): [] __up_console_sem+0xb4/0xfc [ 48.806170][ T5017] hardirqs last disabled at (80728): [] el1_dbg+0x24/0x80 [ 48.807615][ T5017] softirqs last enabled at (80704): [] handle_softirqs+0xa70/0xc14 [ 48.809215][ T5017] softirqs last disabled at (80597): [] __irq_exit_rcu+0x240/0x434 [ 48.810850][ T5017] ---[ end trace b71af0a6ec9a2cf1 ]--- [ 48.813000][ T5017] BTRFS: error (device loop0) in btrfs_replace_file_extents:2983: errno=-12 Out of memory [ 48.814690][ T5017] BTRFS info (device loop0): forced readonly [ 48.988727][ T5038] loop0: detected capacity change from 0 to 32768 [ 48.992169][ T5038] BTRFS: device fsid 24c7a497-3402-47dd-bef8-82358f5f30e0 devid 1 transid 8 /dev/loop0 scanned by syz-executor.0 (5038) [ 48.997008][ T5038] BTRFS info (device loop0): using crc32c (crc32c-generic) checksum algorithm [ 48.998482][ T5038] BTRFS info (device loop0): using free space tree [ 48.999513][ T5038] BTRFS info (device loop0): has skinny extents [ 49.010073][ T5038] BTRFS info (device loop0): enabling ssd optimizations [ 49.013646][ T5038] FAULT_INJECTION: forcing a failure. [ 49.013646][ T5038] name failslab, interval 1, probability 0, space 0, times 0 [ 49.015826][ T5038] CPU: 0 PID: 5038 Comm: syz-executor.0 Tainted: G W syzkaller #0 [ 49.017327][ T5038] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/02/2026 [ 49.018983][ T5038] Call trace: [ 49.019508][ T5038] dump_backtrace+0x0/0x458 [ 49.020267][ T5038] show_stack+0x2c/0x3c [ 49.020963][ T5038] __dump_stack+0x30/0x40 [ 49.021678][ T5038] dump_stack_lvl+0xf4/0x15c [ 49.022457][ T5038] dump_stack+0x1c/0x5c [ 49.023145][ T5038] should_fail+0x3c8/0x520 [ 49.023889][ T5038] __should_failslab+0xbc/0x10c [ 49.024727][ T5038] should_failslab+0x10/0x28 [ 49.025484][ T5038] slab_pre_alloc_hook+0x64/0xe8 [ 49.026304][ T5038] kmem_cache_alloc+0x94/0x3d8 [ 49.027089][ T5038] btrfs_add_delayed_data_ref+0x3f0/0xd64 [ 49.028081][ T5038] btrfs_alloc_reserved_file_extent+0x1a8/0x2c8 [ 49.029147][ T5038] btrfs_insert_replace_extent+0x818/0x9b0 [ 49.030153][ T5038] btrfs_replace_file_extents+0x8a8/0x1284 [ 49.031150][ T5038] __btrfs_prealloc_file_range+0x35c/0xb80 [ 49.032091][ T5038] btrfs_prealloc_file_range+0x60/0x7c [ 49.033030][ T5038] btrfs_fallocate+0xcb0/0x1720 [ 49.033797][ T5038] vfs_fallocate+0x4a4/0x5fc [ 49.034537][ T5038] ioctl_preallocate+0x234/0x2d4 [ 49.035347][ T5038] do_vfs_ioctl+0x1aa8/0x2404 [ 49.036155][ T5038] __arm64_sys_ioctl+0xe4/0x1c8 [ 49.037013][ T5038] invoke_syscall+0x98/0x28c [ 49.037837][ T5038] el0_svc_common+0x13c/0x258 [ 49.038624][ T5038] do_el0_svc+0x5c/0x140 [ 49.039358][ T5038] el0_svc+0x78/0x1d0 [ 49.040046][ T5038] el0t_64_sync_handler+0xcc/0xe4 [ 49.040894][ T5038] el0t_64_sync+0x1a0/0x1a4 [ 49.042911][ T5038] ------------[ cut here ]------------ [ 49.043916][ T5038] WARNING: CPU: 0 PID: 5038 at fs/btrfs/file.c:2983 btrfs_replace_file_extents+0xd18/0x1284 [ 49.045584][ T5038] Modules linked in: [ 49.046228][ T5038] CPU: 0 PID: 5038 Comm: syz-executor.0 Tainted: G W syzkaller #0 [ 49.047881][ T5038] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/02/2026 [ 49.049649][ T5038] pstate: 62400005 (nZCv daif +PAN -UAO +TCO -DIT -SSBS BTYPE=--) [ 49.051071][ T5038] pc : btrfs_replace_file_extents+0xd18/0x1284 [ 49.052178][ T5038] lr : btrfs_replace_file_extents+0xd18/0x1284 [ 49.053216][ T5038] sp : ffff800021a372a0 [ 49.053921][ T5038] x29: ffff800021a373c0 x28: 00000000fffffff4 x27: ffff800021a37560 [ 49.055358][ T5038] x26: 0000000000000000 x25: dfff800000000000 x24: ffff700004346e64 [ 49.056916][ T5038] x23: ffff0000de912740 x22: ffff0000de9ccdc0 x21: ffff0000cdc78100 [ 49.058497][ T5038] x20: 1fffe0001bd399c3 x19: ffff0000de9cce18 x18: 0000000000000000 [ 49.060086][ T5038] x17: 0000000000000000 x16: ffff80001135f958 x15: 0000000000000000 [ 49.061574][ T5038] x14: 0000000000000001 x13: 1fffe000341cc7ab x12: 0000000000000000 [ 49.062932][ T5038] x11: ff80800008300a38 x10: 0000000000000000 x9 : a10dbbfe2c3db200 [ 49.064331][ T5038] x8 : a10dbbfe2c3db200 x7 : 0000000000000001 x6 : 0000000000000001 [ 49.065725][ T5038] x5 : ffff800021a36bb8 x4 : ffff80001447f520 x3 : ffff80000850fcd0 [ 49.067100][ T5038] x2 : 0000000000000001 x1 : 0000000100000000 x0 : 0000000000000026 [ 49.068483][ T5038] Call trace: [ 49.069049][ T5038] btrfs_replace_file_extents+0xd18/0x1284 [ 49.070064][ T5038] __btrfs_prealloc_file_range+0x35c/0xb80 [ 49.071078][ T5038] btrfs_prealloc_file_range+0x60/0x7c [ 49.072038][ T5038] btrfs_fallocate+0xcb0/0x1720 [ 49.072904][ T5038] vfs_fallocate+0x4a4/0x5fc [ 49.073723][ T5038] ioctl_preallocate+0x234/0x2d4 [ 49.074592][ T5038] do_vfs_ioctl+0x1aa8/0x2404 [ 49.075416][ T5038] __arm64_sys_ioctl+0xe4/0x1c8 [ 49.076424][ T5038] invoke_syscall+0x98/0x28c [ 49.077344][ T5038] el0_svc_common+0x13c/0x258 [ 49.078242][ T5038] do_el0_svc+0x5c/0x140 [ 49.079114][ T5038] el0_svc+0x78/0x1d0 [ 49.079933][ T5038] el0t_64_sync_handler+0xcc/0xe4 [ 49.080915][ T5038] el0t_64_sync+0x1a0/0x1a4 [ 49.081757][ T5038] irq event stamp: 79482 [ 49.082479][ T5038] hardirqs last enabled at (79481): [] __up_console_sem+0xb4/0xfc [ 49.084159][ T5038] hardirqs last disabled at (79482): [] el1_dbg+0x24/0x80 [ 49.085613][ T5038] softirqs last enabled at (79458): [] handle_softirqs+0xa70/0xc14 [ 49.087560][ T5038] softirqs last disabled at (79349): [] __irq_exit_rcu+0x240/0x434 [ 49.089458][ T5038] ---[ end trace b71af0a6ec9a2cf2 ]--- [ 49.091639][ T5038] BTRFS: error (device loop0) in btrfs_replace_file_extents:2983: errno=-12 Out of memory [ 49.093390][ T5038] BTRFS info (device loop0): forced readonly [ 49.268412][ T5059] loop0: detected capacity change from 0 to 32768 [ 49.271127][ T5059] BTRFS: device fsid 24c7a497-3402-47dd-bef8-82358f5f30e0 devid 1 transid 8 /dev/loop0 scanned by syz-executor.0 (5059) [ 49.275102][ T5059] BTRFS info (device loop0): using crc32c (crc32c-generic) checksum algorithm [ 49.276635][ T5059] BTRFS info (device loop0): using free space tree [ 49.277763][ T5059] BTRFS info (device loop0): has skinny extents [ 49.288473][ T5059] BTRFS info (device loop0): enabling ssd optimizations [ 49.296487][ T5059] FAULT_INJECTION: forcing a failure. [ 49.296487][ T5059] name failslab, interval 1, probability 0, space 0, times 0 [ 49.298589][ T5059] CPU: 1 PID: 5059 Comm: syz-executor.0 Tainted: G W syzkaller #0 [ 49.300063][ T5059] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/02/2026 [ 49.301786][ T5059] Call trace: [ 49.302336][ T5059] dump_backtrace+0x0/0x458 [ 49.303091][ T5059] show_stack+0x2c/0x3c [ 49.303788][ T5059] __dump_stack+0x30/0x40 [ 49.304494][ T5059] dump_stack_lvl+0xf4/0x15c [ 49.305227][ T5059] dump_stack+0x1c/0x5c [ 49.305838][ T5059] should_fail+0x3c8/0x520 [ 49.306595][ T5059] __should_failslab+0xbc/0x10c [ 49.307399][ T5059] should_failslab+0x10/0x28 [ 49.308183][ T5059] slab_pre_alloc_hook+0x64/0xe8 [ 49.309018][ T5059] kmem_cache_alloc+0x94/0x3d8 [ 49.309847][ T5059] btrfs_add_delayed_data_ref+0x174/0xd64 [ 49.310838][ T5059] btrfs_alloc_reserved_file_extent+0x1a8/0x2c8 [ 49.311889][ T5059] btrfs_insert_replace_extent+0x818/0x9b0 [ 49.312905][ T5059] btrfs_replace_file_extents+0x8a8/0x1284 [ 49.313884][ T5059] __btrfs_prealloc_file_range+0x35c/0xb80 [ 49.314902][ T5059] btrfs_prealloc_file_range+0x60/0x7c [ 49.315755][ T5059] btrfs_fallocate+0xcb0/0x1720 [ 49.316547][ T5059] vfs_fallocate+0x4a4/0x5fc [ 49.317299][ T5059] ioctl_preallocate+0x234/0x2d4 [ 49.318198][ T5059] do_vfs_ioctl+0x1aa8/0x2404 [ 49.318973][ T5059] __arm64_sys_ioctl+0xe4/0x1c8 [ 49.319791][ T5059] invoke_syscall+0x98/0x28c [ 49.320573][ T5059] el0_svc_common+0x13c/0x258 [ 49.321395][ T5059] do_el0_svc+0x5c/0x140 [ 49.322140][ T5059] el0_svc+0x78/0x1d0 [ 49.322793][ T5059] el0t_64_sync_handler+0xcc/0xe4 [ 49.323664][ T5059] el0t_64_sync+0x1a0/0x1a4 [ 49.325141][ T5059] ------------[ cut here ]------------ [ 49.326188][ T5059] WARNING: CPU: 1 PID: 5059 at fs/btrfs/file.c:2983 btrfs_replace_file_extents+0xd18/0x1284 [ 49.327852][ T5059] Modules linked in: [ 49.328526][ T5059] CPU: 1 PID: 5059 Comm: syz-executor.0 Tainted: G W syzkaller #0 [ 49.330089][ T5059] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/02/2026 [ 49.331775][ T5059] pstate: 62400005 (nZCv daif +PAN -UAO +TCO -DIT -SSBS BTYPE=--) [ 49.333051][ T5059] pc : btrfs_replace_file_extents+0xd18/0x1284 [ 49.334051][ T5059] lr : btrfs_replace_file_extents+0xd18/0x1284 [ 49.335063][ T5059] sp : ffff800021b572a0 [ 49.335844][ T5059] x29: ffff800021b573c0 x28: 00000000fffffff4 x27: ffff800021b57560 [ 49.337227][ T5059] x26: 0000000000000000 x25: dfff800000000000 x24: ffff70000436ae64 [ 49.338600][ T5059] x23: ffff0000deb8b110 x22: ffff0000de9e62c0 x21: ffff0000d4e9ca00 [ 49.339894][ T5059] x20: 1fffe0001bd3cc63 x19: ffff0000de9e6318 x18: 0000000000000000 [ 49.341554][ T5059] x17: 0000000000000000 x16: ffff80001135f958 x15: 0000000000000000 [ 49.343148][ T5059] x14: 0000000000000001 x13: 1fffe000341d09ab x12: 0000000000000000 [ 49.344542][ T5059] x11: ff80800008300a38 x10: 0000000000000000 x9 : d813ee76999cd600 [ 49.345973][ T5059] x8 : d813ee76999cd600 x7 : 0000000000000001 x6 : 0000000000000001 [ 49.347287][ T5059] x5 : ffff800021b56bb8 x4 : ffff80001447f520 x3 : ffff80000850fcd0 [ 49.348619][ T5059] x2 : 0000000000000001 x1 : 0000000100000000 x0 : 0000000000000026 [ 49.349952][ T5059] Call trace: [ 49.350502][ T5059] btrfs_replace_file_extents+0xd18/0x1284 [ 49.351467][ T5059] __btrfs_prealloc_file_range+0x35c/0xb80 [ 49.352443][ T5059] btrfs_prealloc_file_range+0x60/0x7c [ 49.353365][ T5059] btrfs_fallocate+0xcb0/0x1720 [ 49.354157][ T5059] vfs_fallocate+0x4a4/0x5fc [ 49.354956][ T5059] ioctl_preallocate+0x234/0x2d4 [ 49.355819][ T5059] do_vfs_ioctl+0x1aa8/0x2404 [ 49.356621][ T5059] __arm64_sys_ioctl+0xe4/0x1c8 [ 49.357459][ T5059] invoke_syscall+0x98/0x28c [ 49.358245][ T5059] el0_svc_common+0x13c/0x258 [ 49.359047][ T5059] do_el0_svc+0x5c/0x140 [ 49.359757][ T5059] el0_svc+0x78/0x1d0 [ 49.360464][ T5059] el0t_64_sync_handler+0xcc/0xe4 [ 49.361280][ T5059] el0t_64_sync+0x1a0/0x1a4 [ 49.362032][ T5059] irq event stamp: 79260 [ 49.362758][ T5059] hardirqs last enabled at (79259): [] __up_console_sem+0xb4/0xfc [ 49.364350][ T5059] hardirqs last disabled at (79260): [] el1_dbg+0x24/0x80 [ 49.365831][ T5059] softirqs last enabled at (79240): [] handle_softirqs+0xa70/0xc14 [ 49.367396][ T5059] softirqs last disabled at (79229): [] __irq_exit_rcu+0x240/0x434 [ 49.369019][ T5059] ---[ end trace b71af0a6ec9a2cf3 ]--- [ 49.370672][ T5059] BTRFS: error (device loop0) in btrfs_replace_file_extents:2983: errno=-12 Out of memory [ 49.373548][ T5059] BTRFS info (device loop0): forced readonly [ 49.568211][ T5080] BTRFS: device fsid 24c7a497-3402-47dd-bef8-82358f5f30e0 devid 1 transid 8 /dev/loop0 scanned by syz-executor.0 (5080) [ 49.573667][ T5080] BTRFS info (device loop0): using crc32c (crc32c-generic) checksum algorithm [ 49.575203][ T5080] BTRFS info (device loop0): using free space tree [ 49.576310][ T5080] BTRFS info (device loop0): has skinny extents [ 49.584398][ T5080] BTRFS info (device loop0): enabling ssd optimizations [ 49.588164][ T5080] FAULT_INJECTION: forcing a failure. [ 49.588164][ T5080] name failslab, interval 1, probability 0, space 0, times 0 [ 49.590323][ T5080] CPU: 1 PID: 5080 Comm: syz-executor.0 Tainted: G W syzkaller #0 [ 49.591765][ T5080] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/02/2026 [ 49.593434][ T5080] Call trace: [ 49.593983][ T5080] dump_backtrace+0x0/0x458 [ 49.594743][ T5080] show_stack+0x2c/0x3c [ 49.595459][ T5080] __dump_stack+0x30/0x40 [ 49.596227][ T5080] dump_stack_lvl+0xf4/0x15c [ 49.596986][ T5080] dump_stack+0x1c/0x5c [ 49.597659][ T5080] should_fail+0x3c8/0x520 [ 49.598367][ T5080] __should_failslab+0xbc/0x10c [ 49.599135][ T5080] should_failslab+0x10/0x28 [ 49.599952][ T5080] slab_pre_alloc_hook+0x64/0xe8 [ 49.600811][ T5080] kmem_cache_alloc+0x94/0x3d8 [ 49.601819][ T5080] btrfs_add_delayed_data_ref+0x3f0/0xd64 [ 49.602874][ T5080] btrfs_alloc_reserved_file_extent+0x1a8/0x2c8 [ 49.604015][ T5080] btrfs_insert_replace_extent+0x818/0x9b0 [ 49.605091][ T5080] btrfs_replace_file_extents+0x8a8/0x1284 [ 49.606129][ T5080] __btrfs_prealloc_file_range+0x35c/0xb80 [ 49.607197][ T5080] btrfs_prealloc_file_range+0x60/0x7c [ 49.608190][ T5080] btrfs_fallocate+0xcb0/0x1720 [ 49.609045][ T5080] vfs_fallocate+0x4a4/0x5fc [ 49.609840][ T5080] ioctl_preallocate+0x234/0x2d4 [ 49.610839][ T5080] do_vfs_ioctl+0x1aa8/0x2404 [ 49.611773][ T5080] __arm64_sys_ioctl+0xe4/0x1c8 [ 49.612757][ T5080] invoke_syscall+0x98/0x28c [ 49.613677][ T5080] el0_svc_common+0x13c/0x258 [ 49.614571][ T5080] do_el0_svc+0x5c/0x140 [ 49.615357][ T5080] el0_svc+0x78/0x1d0 [ 49.616056][ T5080] el0t_64_sync_handler+0xcc/0xe4 [ 49.616880][ T5080] el0t_64_sync+0x1a0/0x1a4 [ 49.619978][ T5080] ------------[ cut here ]------------ [ 49.620927][ T5080] WARNING: CPU: 1 PID: 5080 at fs/btrfs/file.c:2983 btrfs_replace_file_extents+0xd18/0x1284 [ 49.622584][ T5080] Modules linked in: [ 49.623227][ T5080] CPU: 1 PID: 5080 Comm: syz-executor.0 Tainted: G W syzkaller #0 [ 49.624714][ T5080] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/02/2026 [ 49.626291][ T5080] pstate: 62400005 (nZCv daif +PAN -UAO +TCO -DIT -SSBS BTYPE=--) [ 49.627560][ T5080] pc : btrfs_replace_file_extents+0xd18/0x1284 [ 49.628618][ T5080] lr : btrfs_replace_file_extents+0xd18/0x1284 [ 49.629606][ T5080] sp : ffff8000214872a0 [ 49.630303][ T5080] x29: ffff8000214873c0 x28: 00000000fffffff4 x27: ffff800021487560 [ 49.631730][ T5080] x26: 0000000000000000 x25: dfff800000000000 x24: ffff700004290e64 [ 49.633092][ T5080] x23: ffff0000deb8ce80 x22: ffff0000de9e6370 x21: ffff0000d8f08400 [ 49.634428][ T5080] x20: 1fffe0001bd3cc79 x19: ffff0000de9e63c8 x18: 0000000000000000 [ 49.635678][ T5080] x17: 0000000000000000 x16: ffff80001135f958 x15: 0000000000000000 [ 49.636933][ T5080] x14: 0000000000000001 x13: 1fffe000341d09ab x12: 0000000000000000 [ 49.638297][ T5080] x11: ff80800008300a38 x10: 0000000000000000 x9 : 7674cd6d5d74cd00 [ 49.639619][ T5080] x8 : 7674cd6d5d74cd00 x7 : 0000000000000001 x6 : 0000000000000001 [ 49.640939][ T5080] x5 : ffff800021486bb8 x4 : ffff80001447f520 x3 : ffff80000850fcd0 [ 49.642257][ T5080] x2 : 0000000000000001 x1 : 0000000100000000 x0 : 0000000000000026 [ 49.643646][ T5080] Call trace: [ 49.644259][ T5080] btrfs_replace_file_extents+0xd18/0x1284 [ 49.645282][ T5080] __btrfs_prealloc_file_range+0x35c/0xb80 [ 49.646296][ T5080] btrfs_prealloc_file_range+0x60/0x7c [ 49.647234][ T5080] btrfs_fallocate+0xcb0/0x1720 [ 49.648028][ T5080] vfs_fallocate+0x4a4/0x5fc [ 49.648822][ T5080] ioctl_preallocate+0x234/0x2d4 [ 49.649655][ T5080] do_vfs_ioctl+0x1aa8/0x2404 [ 49.650464][ T5080] __arm64_sys_ioctl+0xe4/0x1c8 [ 49.651288][ T5080] invoke_syscall+0x98/0x28c [ 49.652065][ T5080] el0_svc_common+0x13c/0x258 [ 49.652878][ T5080] do_el0_svc+0x5c/0x140 [ 49.653598][ T5080] el0_svc+0x78/0x1d0 [ 49.654285][ T5080] el0t_64_sync_handler+0xcc/0xe4 [ 49.655131][ T5080] el0t_64_sync+0x1a0/0x1a4 [ 49.655918][ T5080] irq event stamp: 79786 [ 49.656636][ T5080] hardirqs last enabled at (79785): [] __up_console_sem+0xb4/0xfc [ 49.658168][ T5080] hardirqs last disabled at (79786): [] el1_dbg+0x24/0x80 [ 49.659614][ T5080] softirqs last enabled at (79762): [] handle_softirqs+0xa70/0xc14 [ 49.661161][ T5080] softirqs last disabled at (79749): [] __irq_exit_rcu+0x240/0x434 [ 49.662738][ T5080] ---[ end trace b71af0a6ec9a2cf4 ]--- [ 49.664606][ T5080] BTRFS: error (device loop0) in btrfs_replace_file_extents:2983: errno=-12 Out of memory [ 49.666478][ T5080] BTRFS info (device loop0): forced readonly [ 49.860345][ T5101] BTRFS: device fsid 24c7a497-3402-47dd-bef8-82358f5f30e0 devid 1 transid 8 /dev/loop0 scanned by syz-executor.0 (5101) [ 49.865024][ T5101] BTRFS info (device loop0): using crc32c (crc32c-generic) checksum algorithm [ 49.866582][ T5101] BTRFS info (device loop0): using free space tree [ 49.867730][ T5101] BTRFS info (device loop0): has skinny extents [ 49.878184][ T5101] BTRFS info (device loop0): enabling ssd optimizations [ 49.881827][ T5101] FAULT_INJECTION: forcing a failure. [ 49.881827][ T5101] name failslab, interval 1, probability 0, space 0, times 0 [ 49.884007][ T5101] CPU: 0 PID: 5101 Comm: syz-executor.0 Tainted: G W syzkaller #0 [ 49.885596][ T5101] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/02/2026 [ 49.887228][ T5101] Call trace: [ 49.887777][ T5101] dump_backtrace+0x0/0x458 [ 49.888522][ T5101] show_stack+0x2c/0x3c [ 49.889177][ T5101] __dump_stack+0x30/0x40 [ 49.889909][ T5101] dump_stack_lvl+0xf4/0x15c [ 49.890612][ T5101] dump_stack+0x1c/0x5c [ 49.891256][ T5101] should_fail+0x3c8/0x520 [ 49.892002][ T5101] __should_failslab+0xbc/0x10c [ 49.892827][ T5101] should_failslab+0x10/0x28 [ 49.893631][ T5101] slab_pre_alloc_hook+0x64/0xe8 [ 49.894482][ T5101] kmem_cache_alloc+0x94/0x3d8 [ 49.895292][ T5101] alloc_extent_map+0x28/0x128 [ 49.896118][ T5101] btrfs_drop_extent_cache+0x150/0xd60 [ 49.897092][ T5101] btrfs_drop_extents+0x2e8/0x2338 [ 49.897985][ T5101] btrfs_replace_file_extents+0x340/0x1284 [ 49.898982][ T5101] __btrfs_prealloc_file_range+0x35c/0xb80 [ 49.900008][ T5101] btrfs_prealloc_file_range+0x60/0x7c [ 49.900950][ T5101] btrfs_fallocate+0xcb0/0x1720 [ 49.901772][ T5101] vfs_fallocate+0x4a4/0x5fc [ 49.902506][ T5101] ioctl_preallocate+0x234/0x2d4 [ 49.903331][ T5101] do_vfs_ioctl+0x1aa8/0x2404 [ 49.904124][ T5101] __arm64_sys_ioctl+0xe4/0x1c8 [ 49.904930][ T5101] invoke_syscall+0x98/0x28c [ 49.905712][ T5101] el0_svc_common+0x13c/0x258 [ 49.906519][ T5101] do_el0_svc+0x5c/0x140 [ 49.907213][ T5101] el0_svc+0x78/0x1d0 [ 49.907884][ T5101] el0t_64_sync_handler+0xcc/0xe4 [ 49.908677][ T5101] el0t_64_sync+0x1a0/0x1a4 [ 50.087866][ T5122] BTRFS: device fsid 24c7a497-3402-47dd-bef8-82358f5f30e0 devid 1 transid 8 /dev/loop0 scanned by syz-executor.0 (5122) [ 50.092308][ T5122] BTRFS info (device loop0): using crc32c (crc32c-generic) checksum algorithm [ 50.093921][ T5122] BTRFS info (device loop0): using free space tree [ 50.095119][ T5122] BTRFS info (device loop0): has skinny extents [ 50.103522][ T5122] BTRFS info (device loop0): enabling ssd optimizations [ 50.107335][ T5122] FAULT_INJECTION: forcing a failure. [ 50.107335][ T5122] name failslab, interval 1, probability 0, space 0, times 0 [ 50.109569][ T5122] CPU: 1 PID: 5122 Comm: syz-executor.0 Tainted: G W syzkaller #0 [ 50.111132][ T5122] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/02/2026 [ 50.112800][ T5122] Call trace: [ 50.113321][ T5122] dump_backtrace+0x0/0x458 [ 50.114066][ T5122] show_stack+0x2c/0x3c [ 50.114780][ T5122] __dump_stack+0x30/0x40 [ 50.115648][ T5122] dump_stack_lvl+0xf4/0x15c [ 50.116470][ T5122] dump_stack+0x1c/0x5c [ 50.117221][ T5122] should_fail+0x3c8/0x520 [ 50.118023][ T5122] __should_failslab+0xbc/0x10c [ 50.118866][ T5122] should_failslab+0x10/0x28 [ 50.119615][ T5122] slab_pre_alloc_hook+0x64/0xe8 [ 50.120487][ T5122] kmem_cache_alloc+0x94/0x3d8 [ 50.121282][ T5122] btrfs_add_delayed_data_ref+0x3f0/0xd64 [ 50.122236][ T5122] btrfs_alloc_reserved_file_extent+0x1a8/0x2c8 [ 50.123295][ T5122] btrfs_insert_replace_extent+0x818/0x9b0 [ 50.124265][ T5122] btrfs_replace_file_extents+0x8a8/0x1284 [ 50.125190][ T5122] __btrfs_prealloc_file_range+0x35c/0xb80 [ 50.126126][ T5122] btrfs_prealloc_file_range+0x60/0x7c [ 50.126993][ T5122] btrfs_fallocate+0xcb0/0x1720 [ 50.127976][ T5122] vfs_fallocate+0x4a4/0x5fc [ 50.128793][ T5122] ioctl_preallocate+0x234/0x2d4 [ 50.129652][ T5122] do_vfs_ioctl+0x1aa8/0x2404 [ 50.130531][ T5122] __arm64_sys_ioctl+0xe4/0x1c8 [ 50.131460][ T5122] invoke_syscall+0x98/0x28c [ 50.132313][ T5122] el0_svc_common+0x13c/0x258 [ 50.133176][ T5122] do_el0_svc+0x5c/0x140 [ 50.133971][ T5122] el0_svc+0x78/0x1d0 [ 50.134747][ T5122] el0t_64_sync_handler+0xcc/0xe4 [ 50.135610][ T5122] el0t_64_sync+0x1a0/0x1a4 [ 50.138906][ T5122] ------------[ cut here ]------------ [ 50.139965][ T5122] WARNING: CPU: 1 PID: 5122 at fs/btrfs/file.c:2983 btrfs_replace_file_extents+0xd18/0x1284 [ 50.141618][ T5122] Modules linked in: [ 50.142304][ T5122] CPU: 1 PID: 5122 Comm: syz-executor.0 Tainted: G W syzkaller #0 [ 50.143851][ T5122] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/02/2026 [ 50.145559][ T5122] pstate: 62400005 (nZCv daif +PAN -UAO +TCO -DIT -SSBS BTYPE=--) [ 50.146941][ T5122] pc : btrfs_replace_file_extents+0xd18/0x1284 [ 50.147965][ T5122] lr : btrfs_replace_file_extents+0xd18/0x1284 [ 50.149056][ T5122] sp : ffff8000214872a0 [ 50.149806][ T5122] x29: ffff8000214873c0 x28: 00000000fffffff4 x27: ffff800021487560 [ 50.151166][ T5122] x26: 0000000000000000 x25: dfff800000000000 x24: ffff700004290e64 [ 50.152500][ T5122] x23: ffff0000e250e220 x22: ffff0000de9e6580 x21: ffff0000d83c0800 [ 50.153844][ T5122] x20: 1fffe0001bd3ccbb x19: ffff0000de9e65d8 x18: 0000000000000000 [ 50.155151][ T5122] x17: 0000000000000000 x16: ffff80001135f958 x15: 0000000000000000 [ 50.156510][ T5122] x14: 0000000000000001 x13: 1fffe000341d09ab x12: 0000000000000000 [ 50.157856][ T5122] x11: ff80800008300a38 x10: 0000000000000000 x9 : a05c1930bbb46100 [ 50.159232][ T5122] x8 : a05c1930bbb46100 x7 : 0000000000000001 x6 : 0000000000000001 [ 50.160607][ T5122] x5 : ffff800021486bb8 x4 : ffff80001447f520 x3 : ffff80000850fcd0 [ 50.161975][ T5122] x2 : 0000000000000001 x1 : 0000000100000000 x0 : 0000000000000026 [ 50.163329][ T5122] Call trace: [ 50.163854][ T5122] btrfs_replace_file_extents+0xd18/0x1284 [ 50.164771][ T5122] __btrfs_prealloc_file_range+0x35c/0xb80 [ 50.165704][ T5122] btrfs_prealloc_file_range+0x60/0x7c [ 50.166578][ T5122] btrfs_fallocate+0xcb0/0x1720 [ 50.167342][ T5122] vfs_fallocate+0x4a4/0x5fc [ 50.168105][ T5122] ioctl_preallocate+0x234/0x2d4 [ 50.168935][ T5122] do_vfs_ioctl+0x1aa8/0x2404 [ 50.169702][ T5122] __arm64_sys_ioctl+0xe4/0x1c8 [ 50.170503][ T5122] invoke_syscall+0x98/0x28c [ 50.171207][ T5122] el0_svc_common+0x13c/0x258 [ 50.171990][ T5122] do_el0_svc+0x5c/0x140 [ 50.172691][ T5122] el0_svc+0x78/0x1d0 [ 50.173349][ T5122] el0t_64_sync_handler+0xcc/0xe4 [ 50.174153][ T5122] el0t_64_sync+0x1a0/0x1a4 [ 50.174893][ T5122] irq event stamp: 80020 [ 50.175595][ T5122] hardirqs last enabled at (80019): [] __up_console_sem+0xb4/0xfc [ 50.177168][ T5122] hardirqs last disabled at (80020): [] el1_dbg+0x24/0x80 [ 50.178612][ T5122] softirqs last enabled at (79996): [] handle_softirqs+0xa70/0xc14 [ 50.180248][ T5122] softirqs last disabled at (79917): [] __irq_exit_rcu+0x240/0x434 [ 50.181724][ T5122] ---[ end trace b71af0a6ec9a2cf5 ]--- [ 50.183347][ T5122] BTRFS: error (device loop0) in btrfs_replace_file_extents:2983: errno=-12 Out of memory [ 50.184983][ T5122] BTRFS info (device loop0): forced readonly [ 50.406860][ T5143] BTRFS: device fsid 24c7a497-3402-47dd-bef8-82358f5f30e0 devid 1 transid 8 /dev/loop0 scanned by syz-executor.0 (5143) [ 50.411479][ T5143] BTRFS info (device loop0): using crc32c (crc32c-generic) checksum algorithm [ 50.413201][ T5143] BTRFS info (device loop0): using free space tree [ 50.414372][ T5143] BTRFS info (device loop0): has skinny extents [ 50.427933][ T5143] BTRFS info (device loop0): enabling ssd optimizations [ 50.431985][ T5143] FAULT_INJECTION: forcing a failure. [ 50.431985][ T5143] name failslab, interval 1, probability 0, space 0, times 0 [ 50.434280][ T5143] CPU: 1 PID: 5143 Comm: syz-executor.0 Tainted: G W syzkaller #0 [ 50.435788][ T5143] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/02/2026 [ 50.437463][ T5143] Call trace: [ 50.438033][ T5143] dump_backtrace+0x0/0x458 [ 50.438825][ T5143] show_stack+0x2c/0x3c [ 50.439552][ T5143] __dump_stack+0x30/0x40 [ 50.440338][ T5143] dump_stack_lvl+0xf4/0x15c [ 50.441160][ T5143] dump_stack+0x1c/0x5c [ 50.441884][ T5143] should_fail+0x3c8/0x520 [ 50.442655][ T5143] __should_failslab+0xbc/0x10c [ 50.443516][ T5143] should_failslab+0x10/0x28 [ 50.444294][ T5143] slab_pre_alloc_hook+0x64/0xe8 [ 50.445154][ T5143] kmem_cache_alloc+0x94/0x3d8 [ 50.445946][ T5143] btrfs_add_delayed_data_ref+0x174/0xd64 [ 50.446904][ T5143] btrfs_alloc_reserved_file_extent+0x1a8/0x2c8 [ 50.447947][ T5143] btrfs_insert_replace_extent+0x818/0x9b0 [ 50.448924][ T5143] btrfs_replace_file_extents+0x8a8/0x1284 [ 50.449912][ T5143] __btrfs_prealloc_file_range+0x35c/0xb80 [ 50.450925][ T5143] btrfs_prealloc_file_range+0x60/0x7c [ 50.451855][ T5143] btrfs_fallocate+0xcb0/0x1720 [ 50.452677][ T5143] vfs_fallocate+0x4a4/0x5fc [ 50.453473][ T5143] ioctl_preallocate+0x234/0x2d4 [ 50.454293][ T5143] do_vfs_ioctl+0x1aa8/0x2404 [ 50.455075][ T5143] __arm64_sys_ioctl+0xe4/0x1c8 [ 50.455894][ T5143] invoke_syscall+0x98/0x28c [ 50.456677][ T5143] el0_svc_common+0x13c/0x258 [ 50.457446][ T5143] do_el0_svc+0x5c/0x140 [ 50.458183][ T5143] el0_svc+0x78/0x1d0 [ 50.458896][ T5143] el0t_64_sync_handler+0xcc/0xe4 [ 50.459825][ T5143] el0t_64_sync+0x1a0/0x1a4 [ 50.461455][ T5143] ------------[ cut here ]------------ [ 50.462506][ T5143] WARNING: CPU: 1 PID: 5143 at fs/btrfs/file.c:2983 btrfs_replace_file_extents+0xd18/0x1284 [ 50.464071][ T5143] Modules linked in: [ 50.464699][ T5143] CPU: 1 PID: 5143 Comm: syz-executor.0 Tainted: G W syzkaller #0 [ 50.466158][ T5143] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/02/2026 [ 50.467738][ T5143] pstate: 62400005 (nZCv daif +PAN -UAO +TCO -DIT -SSBS BTYPE=--) [ 50.469229][ T5143] pc : btrfs_replace_file_extents+0xd18/0x1284 [ 50.470405][ T5143] lr : btrfs_replace_file_extents+0xd18/0x1284 [ 50.471514][ T5143] sp : ffff800021db72a0 [ 50.472258][ T5143] x29: ffff800021db73c0 x28: 00000000fffffff4 x27: ffff800021db7560 [ 50.473700][ T5143] x26: 0000000000000000 x25: dfff800000000000 x24: ffff7000043b6e64 [ 50.475067][ T5143] x23: ffff0000e250d850 x22: ffff0000de9e6840 x21: ffff0000c18b9200 [ 50.476476][ T5143] x20: 1fffe0001bd3cd13 x19: ffff0000de9e6898 x18: 0000000000000000 [ 50.478086][ T5143] x17: 0000000000000000 x16: ffff8000082c67fc x15: 0000000000000000 [ 50.479499][ T5143] x14: 0000000000000001 x13: 1ffff000043b6d74 x12: 0000000000000000 [ 50.481049][ T5143] x11: ff80800008300a38 x10: 0000000000000000 x9 : 9fc793c9e1463700 [ 50.482518][ T5143] x8 : 9fc793c9e1463700 x7 : 0000000000000001 x6 : 0000000000000001 [ 50.483948][ T5143] x5 : ffff800021db6bb8 x4 : ffff80001447f520 x3 : ffff800008308360 [ 50.485356][ T5143] x2 : 0000000000000001 x1 : 0000000100000000 x0 : 0000000000000026 [ 50.486734][ T5143] Call trace: [ 50.487306][ T5143] btrfs_replace_file_extents+0xd18/0x1284 [ 50.488240][ T5143] __btrfs_prealloc_file_range+0x35c/0xb80 [ 50.489187][ T5143] btrfs_prealloc_file_range+0x60/0x7c [ 50.490104][ T5143] btrfs_fallocate+0xcb0/0x1720 [ 50.490892][ T5143] vfs_fallocate+0x4a4/0x5fc [ 50.491642][ T5143] ioctl_preallocate+0x234/0x2d4 [ 50.492480][ T5143] do_vfs_ioctl+0x1aa8/0x2404 [ 50.493246][ T5143] __arm64_sys_ioctl+0xe4/0x1c8 [ 50.494033][ T5143] invoke_syscall+0x98/0x28c 1970/01/01 00:00:50 executed programs: 31 [ 50.494747][ T5143] el0_svc_common+0x13c/0x258 [ 50.495529][ T5143] do_el0_svc+0x5c/0x140 [ 50.496263][ T5143] el0_svc+0x78/0x1d0 [ 50.496960][ T5143] el0t_64_sync_handler+0xcc/0xe4 [ 50.497833][ T5143] el0t_64_sync+0x1a0/0x1a4 [ 50.498620][ T5143] irq event stamp: 79888 [ 50.499337][ T5143] hardirqs last enabled at (79887): [] __up_console_sem+0xb4/0xfc [ 50.500977][ T5143] hardirqs last disabled at (79888): [] el1_dbg+0x24/0x80 [ 50.502469][ T5143] softirqs last enabled at (79868): [] handle_softirqs+0xa70/0xc14 [ 50.504053][ T5143] softirqs last disabled at (79725): [] __irq_exit_rcu+0x240/0x434 [ 50.505709][ T5143] ---[ end trace b71af0a6ec9a2cf6 ]--- [ 50.506858][ T5143] BTRFS: error (device loop0) in btrfs_replace_file_extents:2983: errno=-12 Out of memory [ 50.508620][ T5143] BTRFS info (device loop0): forced readonly [ 50.714847][ T5164] BTRFS: device fsid 24c7a497-3402-47dd-bef8-82358f5f30e0 devid 1 transid 8 /dev/loop0 scanned by syz-executor.0 (5164) [ 50.722681][ T5164] BTRFS info (device loop0): using crc32c (crc32c-generic) checksum algorithm [ 50.724403][ T5164] BTRFS info (device loop0): using free space tree [ 50.725469][ T5164] BTRFS info (device loop0): has skinny extents [ 50.735151][ T5164] BTRFS info (device loop0): enabling ssd optimizations [ 50.739025][ T5164] FAULT_INJECTION: forcing a failure. [ 50.739025][ T5164] name failslab, interval 1, probability 0, space 0, times 0 [ 50.741171][ T5164] CPU: 0 PID: 5164 Comm: syz-executor.0 Tainted: G W syzkaller #0 [ 50.742766][ T5164] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/02/2026 [ 50.744432][ T5164] Call trace: [ 50.744953][ T5164] dump_backtrace+0x0/0x458 [ 50.745689][ T5164] show_stack+0x2c/0x3c [ 50.746376][ T5164] __dump_stack+0x30/0x40 [ 50.747085][ T5164] dump_stack_lvl+0xf4/0x15c [ 50.747858][ T5164] dump_stack+0x1c/0x5c [ 50.748567][ T5164] should_fail+0x3c8/0x520 [ 50.749328][ T5164] __should_failslab+0xbc/0x10c [ 50.750164][ T5164] should_failslab+0x10/0x28 [ 50.750917][ T5164] slab_pre_alloc_hook+0x64/0xe8 [ 50.751702][ T5164] kmem_cache_alloc+0x94/0x3d8 [ 50.752481][ T5164] btrfs_add_delayed_data_ref+0x3f0/0xd64 [ 50.753404][ T5164] btrfs_alloc_reserved_file_extent+0x1a8/0x2c8 [ 50.754452][ T5164] btrfs_insert_replace_extent+0x818/0x9b0 [ 50.755395][ T5164] btrfs_replace_file_extents+0x8a8/0x1284 [ 50.756361][ T5164] __btrfs_prealloc_file_range+0x35c/0xb80 [ 50.757313][ T5164] btrfs_prealloc_file_range+0x60/0x7c [ 50.758240][ T5164] btrfs_fallocate+0xcb0/0x1720 [ 50.759087][ T5164] vfs_fallocate+0x4a4/0x5fc [ 50.759880][ T5164] ioctl_preallocate+0x234/0x2d4 [ 50.760748][ T5164] do_vfs_ioctl+0x1aa8/0x2404 [ 50.761571][ T5164] __arm64_sys_ioctl+0xe4/0x1c8 [ 50.762392][ T5164] invoke_syscall+0x98/0x28c [ 50.763151][ T5164] el0_svc_common+0x13c/0x258 [ 50.763939][ T5164] do_el0_svc+0x5c/0x140 [ 50.764637][ T5164] el0_svc+0x78/0x1d0 [ 50.765286][ T5164] el0t_64_sync_handler+0xcc/0xe4 [ 50.766086][ T5164] el0t_64_sync+0x1a0/0x1a4 [ 50.767155][ T5164] ------------[ cut here ]------------ [ 50.768941][ T5164] WARNING: CPU: 0 PID: 5164 at fs/btrfs/file.c:2983 btrfs_replace_file_extents+0xd18/0x1284 [ 50.770617][ T5164] Modules linked in: [ 50.771394][ T5164] CPU: 0 PID: 5164 Comm: syz-executor.0 Tainted: G W syzkaller #0 [ 50.773172][ T5164] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/02/2026 [ 50.774901][ T5164] pstate: 62400005 (nZCv daif +PAN -UAO +TCO -DIT -SSBS BTYPE=--) [ 50.776271][ T5164] pc : btrfs_replace_file_extents+0xd18/0x1284 [ 50.777397][ T5164] lr : btrfs_replace_file_extents+0xd18/0x1284 [ 50.778438][ T5164] sp : ffff8000221e72a0 [ 50.779160][ T5164] x29: ffff8000221e73c0 x28: 00000000fffffff4 x27: ffff8000221e7560 [ 50.780587][ T5164] x26: 0000000000000000 x25: dfff800000000000 x24: ffff70000443ce64 [ 50.782051][ T5164] x23: ffff0000de915850 x22: ffff0000c0671160 x21: ffff0000ca6b5100 [ 50.783532][ T5164] x20: 1fffe000180ce237 x19: ffff0000c06711b8 x18: 0000000000000000 [ 50.784935][ T5164] x17: 0000000000000000 x16: ffff80001135f958 x15: 0000000000000000 [ 50.786330][ T5164] x14: 0000000000000001 x13: 1fffe000341cc7ab x12: 0000000000000000 [ 50.787737][ T5164] x11: ff80800008300a38 x10: 0000000000000000 x9 : 8569a4f5b97bd900 [ 50.789055][ T5164] x8 : 8569a4f5b97bd900 x7 : 0000000000000001 x6 : 0000000000000001 [ 50.790397][ T5164] x5 : ffff8000221e6bb8 x4 : ffff80001447f520 x3 : ffff80000850fcd0 [ 50.791749][ T5164] x2 : 0000000000000001 x1 : 0000000100000000 x0 : 0000000000000026 [ 50.793056][ T5164] Call trace: [ 50.793566][ T5164] btrfs_replace_file_extents+0xd18/0x1284 [ 50.794514][ T5164] __btrfs_prealloc_file_range+0x35c/0xb80 [ 50.795471][ T5164] btrfs_prealloc_file_range+0x60/0x7c [ 50.796408][ T5164] btrfs_fallocate+0xcb0/0x1720 [ 50.797261][ T5164] vfs_fallocate+0x4a4/0x5fc [ 50.798008][ T5164] ioctl_preallocate+0x234/0x2d4 [ 50.798820][ T5164] do_vfs_ioctl+0x1aa8/0x2404 [ 50.799643][ T5164] __arm64_sys_ioctl+0xe4/0x1c8 [ 50.800496][ T5164] invoke_syscall+0x98/0x28c [ 50.801330][ T5164] el0_svc_common+0x13c/0x258 [ 50.802124][ T5164] do_el0_svc+0x5c/0x140 [ 50.802811][ T5164] el0_svc+0x78/0x1d0 [ 50.803481][ T5164] el0t_64_sync_handler+0xcc/0xe4 [ 50.804327][ T5164] el0t_64_sync+0x1a0/0x1a4 [ 50.805070][ T5164] irq event stamp: 79618 [ 50.805784][ T5164] hardirqs last enabled at (79617): [] __up_console_sem+0xb4/0xfc [ 50.807358][ T5164] hardirqs last disabled at (79618): [] el1_dbg+0x24/0x80 [ 50.808676][ T5164] softirqs last enabled at (79590): [] handle_softirqs+0xa70/0xc14 [ 50.810280][ T5164] softirqs last disabled at (79565): [] __irq_exit_rcu+0x240/0x434 [ 50.811813][ T5164] ---[ end trace b71af0a6ec9a2cf7 ]--- [ 50.813846][ T5164] BTRFS: error (device loop0) in btrfs_replace_file_extents:2983: errno=-12 Out of memory [ 50.815454][ T5164] BTRFS info (device loop0): forced readonly [ 50.996117][ T5185] BTRFS: device fsid 24c7a497-3402-47dd-bef8-82358f5f30e0 devid 1 transid 8 /dev/loop0 scanned by syz-executor.0 (5185) [ 51.000774][ T5185] BTRFS info (device loop0): using crc32c (crc32c-generic) checksum algorithm [ 51.002414][ T5185] BTRFS info (device loop0): using free space tree [ 51.003353][ T5185] BTRFS info (device loop0): has skinny extents [ 51.013558][ T5185] BTRFS info (device loop0): enabling ssd optimizations [ 51.017203][ T5185] FAULT_INJECTION: forcing a failure. [ 51.017203][ T5185] name failslab, interval 1, probability 0, space 0, times 0 [ 51.019347][ T5185] CPU: 0 PID: 5185 Comm: syz-executor.0 Tainted: G W syzkaller #0 [ 51.020832][ T5185] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/02/2026 [ 51.022607][ T5185] Call trace: [ 51.023162][ T5185] dump_backtrace+0x0/0x458 [ 51.023955][ T5185] show_stack+0x2c/0x3c [ 51.024655][ T5185] __dump_stack+0x30/0x40 [ 51.025404][ T5185] dump_stack_lvl+0xf4/0x15c [ 51.026216][ T5185] dump_stack+0x1c/0x5c [ 51.026958][ T5185] should_fail+0x3c8/0x520 [ 51.027756][ T5185] __should_failslab+0xbc/0x10c [ 51.028634][ T5185] should_failslab+0x10/0x28 [ 51.029447][ T5185] slab_pre_alloc_hook+0x64/0xe8 [ 51.030299][ T5185] kmem_cache_alloc+0x94/0x3d8 [ 51.031065][ T5185] btrfs_add_delayed_data_ref+0x3f0/0xd64 [ 51.032018][ T5185] btrfs_alloc_reserved_file_extent+0x1a8/0x2c8 [ 51.033090][ T5185] btrfs_insert_replace_extent+0x818/0x9b0 [ 51.034056][ T5185] btrfs_replace_file_extents+0x8a8/0x1284 [ 51.035058][ T5185] __btrfs_prealloc_file_range+0x35c/0xb80 [ 51.036082][ T5185] btrfs_prealloc_file_range+0x60/0x7c [ 51.037037][ T5185] btrfs_fallocate+0xcb0/0x1720 [ 51.037877][ T5185] vfs_fallocate+0x4a4/0x5fc [ 51.038681][ T5185] ioctl_preallocate+0x234/0x2d4 [ 51.039518][ T5185] do_vfs_ioctl+0x1aa8/0x2404 [ 51.040419][ T5185] __arm64_sys_ioctl+0xe4/0x1c8 [ 51.041306][ T5185] invoke_syscall+0x98/0x28c [ 51.042151][ T5185] el0_svc_common+0x13c/0x258 [ 51.042981][ T5185] do_el0_svc+0x5c/0x140 [ 51.043706][ T5185] el0_svc+0x78/0x1d0 [ 51.044397][ T5185] el0t_64_sync_handler+0xcc/0xe4 [ 51.045292][ T5185] el0t_64_sync+0x1a0/0x1a4 [ 51.047931][ T5185] ------------[ cut here ]------------ [ 51.048946][ T5185] WARNING: CPU: 0 PID: 5185 at fs/btrfs/file.c:2983 btrfs_replace_file_extents+0xd18/0x1284 [ 51.050679][ T5185] Modules linked in: [ 51.051373][ T5185] CPU: 0 PID: 5185 Comm: syz-executor.0 Tainted: G W syzkaller #0 [ 51.052863][ T5185] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/02/2026 [ 51.054685][ T5185] pstate: 62400005 (nZCv daif +PAN -UAO +TCO -DIT -SSBS BTYPE=--) [ 51.055942][ T5185] pc : btrfs_replace_file_extents+0xd18/0x1284 [ 51.056947][ T5185] lr : btrfs_replace_file_extents+0xd18/0x1284 [ 51.057965][ T5185] sp : ffff8000225d72a0 [ 51.058752][ T5185] x29: ffff8000225d73c0 x28: 00000000fffffff4 x27: ffff8000225d7560 [ 51.060309][ T5185] x26: 0000000000000000 x25: dfff800000000000 x24: ffff7000044bae64 [ 51.061962][ T5185] x23: ffff0000de913ae0 x22: ffff0000c06712c0 x21: ffff0000c94e0900 [ 51.063606][ T5185] x20: 1fffe000180ce263 x19: ffff0000c0671318 x18: 0000000000000000 [ 51.065232][ T5185] x17: 0000000000000000 x16: ffff80001135f958 x15: 0000000000000000 [ 51.066768][ T5185] x14: 0000000000000001 x13: 1fffe000341cc7ab x12: 0000000000000000 [ 51.068132][ T5185] x11: ff80800008300a38 x10: 0000000000000000 x9 : cc9849f4df042c00 [ 51.069463][ T5185] x8 : cc9849f4df042c00 x7 : 0000000000000001 x6 : 0000000000000001 [ 51.071057][ T5185] x5 : ffff8000225d6bb8 x4 : ffff80001447f520 x3 : ffff80000850fcd0 [ 51.072514][ T5185] x2 : 0000000000000001 x1 : 0000000100000000 x0 : 0000000000000026 [ 51.073876][ T5185] Call trace: [ 51.074441][ T5185] btrfs_replace_file_extents+0xd18/0x1284 [ 51.075416][ T5185] __btrfs_prealloc_file_range+0x35c/0xb80 [ 51.076330][ T5185] btrfs_prealloc_file_range+0x60/0x7c [ 51.077221][ T5185] btrfs_fallocate+0xcb0/0x1720 [ 51.078055][ T5185] vfs_fallocate+0x4a4/0x5fc [ 51.078890][ T5185] ioctl_preallocate+0x234/0x2d4 [ 51.079749][ T5185] do_vfs_ioctl+0x1aa8/0x2404 [ 51.080530][ T5185] __arm64_sys_ioctl+0xe4/0x1c8 [ 51.081350][ T5185] invoke_syscall+0x98/0x28c [ 51.082267][ T5185] el0_svc_common+0x13c/0x258 [ 51.083119][ T5185] do_el0_svc+0x5c/0x140 [ 51.083983][ T5185] el0_svc+0x78/0x1d0 [ 51.084741][ T5185] el0t_64_sync_handler+0xcc/0xe4 [ 51.085696][ T5185] el0t_64_sync+0x1a0/0x1a4 [ 51.086548][ T5185] irq event stamp: 80076 [ 51.087346][ T5185] hardirqs last enabled at (80075): [] __up_console_sem+0xb4/0xfc [ 51.089088][ T5185] hardirqs last disabled at (80076): [] el1_dbg+0x24/0x80 [ 51.090562][ T5185] softirqs last enabled at (80052): [] handle_softirqs+0xa70/0xc14 [ 51.092221][ T5185] softirqs last disabled at (80023): [] __irq_exit_rcu+0x240/0x434 [ 51.094061][ T5185] ---[ end trace b71af0a6ec9a2cf8 ]--- [ 51.095810][ T5185] BTRFS: error (device loop0) in btrfs_replace_file_extents:2983: errno=-12 Out of memory [ 51.097564][ T5185] BTRFS info (device loop0): forced readonly [ 51.273388][ T5206] BTRFS: device fsid 24c7a497-3402-47dd-bef8-82358f5f30e0 devid 1 transid 8 /dev/loop0 scanned by syz-executor.0 (5206) [ 51.277178][ T5206] BTRFS info (device loop0): using crc32c (crc32c-generic) checksum algorithm [ 51.278781][ T5206] BTRFS info (device loop0): using free space tree [ 51.279779][ T5206] BTRFS info (device loop0): has skinny extents [ 51.296609][ T5206] BTRFS info (device loop0): enabling ssd optimizations [ 51.300437][ T5206] FAULT_INJECTION: forcing a failure. [ 51.300437][ T5206] name failslab, interval 1, probability 0, space 0, times 0 [ 51.302880][ T5206] CPU: 0 PID: 5206 Comm: syz-executor.0 Tainted: G W syzkaller #0 [ 51.304331][ T5206] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/02/2026 [ 51.305950][ T5206] Call trace: [ 51.306478][ T5206] dump_backtrace+0x0/0x458 [ 51.307177][ T5206] show_stack+0x2c/0x3c [ 51.307813][ T5206] __dump_stack+0x30/0x40 [ 51.308512][ T5206] dump_stack_lvl+0xf4/0x15c [ 51.309254][ T5206] dump_stack+0x1c/0x5c [ 51.309936][ T5206] should_fail+0x3c8/0x520 [ 51.310650][ T5206] __should_failslab+0xbc/0x10c [ 51.311440][ T5206] should_failslab+0x10/0x28 [ 51.312253][ T5206] slab_pre_alloc_hook+0x64/0xe8 [ 51.313145][ T5206] kmem_cache_alloc+0x94/0x3d8 [ 51.313960][ T5206] btrfs_add_delayed_data_ref+0x3f0/0xd64 [ 51.314965][ T5206] btrfs_alloc_reserved_file_extent+0x1a8/0x2c8 [ 51.316067][ T5206] btrfs_insert_replace_extent+0x818/0x9b0 [ 51.317109][ T5206] btrfs_replace_file_extents+0x8a8/0x1284 [ 51.318150][ T5206] __btrfs_prealloc_file_range+0x35c/0xb80 [ 51.319189][ T5206] btrfs_prealloc_file_range+0x60/0x7c [ 51.320168][ T5206] btrfs_fallocate+0xcb0/0x1720 [ 51.321009][ T5206] vfs_fallocate+0x4a4/0x5fc [ 51.321837][ T5206] ioctl_preallocate+0x234/0x2d4 [ 51.322704][ T5206] do_vfs_ioctl+0x1aa8/0x2404 [ 51.323549][ T5206] __arm64_sys_ioctl+0xe4/0x1c8 [ 51.324424][ T5206] invoke_syscall+0x98/0x28c [ 51.325238][ T5206] el0_svc_common+0x13c/0x258 [ 51.326052][ T5206] do_el0_svc+0x5c/0x140 [ 51.326750][ T5206] el0_svc+0x78/0x1d0 [ 51.327437][ T5206] el0t_64_sync_handler+0xcc/0xe4 [ 51.328239][ T5206] el0t_64_sync+0x1a0/0x1a4 [ 51.329897][ T5206] ------------[ cut here ]------------ [ 51.330836][ T5206] WARNING: CPU: 0 PID: 5206 at fs/btrfs/file.c:2983 btrfs_replace_file_extents+0xd18/0x1284 [ 51.332612][ T5206] Modules linked in: [ 51.333415][ T5206] CPU: 0 PID: 5206 Comm: syz-executor.0 Tainted: G W syzkaller #0 [ 51.335285][ T5206] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/02/2026 [ 51.337368][ T5206] pstate: 62400005 (nZCv daif +PAN -UAO +TCO -DIT -SSBS BTYPE=--) [ 51.338643][ T5206] pc : btrfs_replace_file_extents+0xd18/0x1284 [ 51.339699][ T5206] lr : btrfs_replace_file_extents+0xd18/0x1284 [ 51.340721][ T5206] sp : ffff8000227472a0 [ 51.341420][ T5206] x29: ffff8000227473c0 x28: 00000000fffffff4 x27: ffff800022747560 [ 51.342708][ T5206] x26: 0000000000000000 x25: dfff800000000000 x24: ffff7000044e8e64 [ 51.344079][ T5206] x23: ffff0000e25409d0 x22: ffff0000c0671370 x21: ffff0000d8e41400 [ 51.345361][ T5206] x20: 1fffe000180ce279 x19: ffff0000c06713c8 x18: 0000000000000000 [ 51.346702][ T5206] x17: 0000000000000000 x16: ffff80001135f958 x15: 0000000000000000 [ 51.347963][ T5206] x14: 0000000000000001 x13: 1fffe000341cc7ab x12: 0000000000000000 [ 51.349273][ T5206] x11: ff80800008300a38 x10: 0000000000000000 x9 : 6bb15f000dbd4200 [ 51.350560][ T5206] x8 : 6bb15f000dbd4200 x7 : 0000000000000001 x6 : 0000000000000001 [ 51.351922][ T5206] x5 : ffff800022746bb8 x4 : ffff80001447f520 x3 : ffff80000850fcd0 [ 51.353300][ T5206] x2 : 0000000000000001 x1 : 0000000100000000 x0 : 0000000000000026 [ 51.354666][ T5206] Call trace: [ 51.355238][ T5206] btrfs_replace_file_extents+0xd18/0x1284 [ 51.356268][ T5206] __btrfs_prealloc_file_range+0x35c/0xb80 [ 51.357244][ T5206] btrfs_prealloc_file_range+0x60/0x7c [ 51.358169][ T5206] btrfs_fallocate+0xcb0/0x1720 [ 51.358964][ T5206] vfs_fallocate+0x4a4/0x5fc [ 51.359729][ T5206] ioctl_preallocate+0x234/0x2d4 [ 51.360579][ T5206] do_vfs_ioctl+0x1aa8/0x2404 [ 51.361385][ T5206] __arm64_sys_ioctl+0xe4/0x1c8 [ 51.362227][ T5206] invoke_syscall+0x98/0x28c [ 51.362973][ T5206] el0_svc_common+0x13c/0x258 [ 51.363756][ T5206] do_el0_svc+0x5c/0x140 [ 51.364612][ T5206] el0_svc+0x78/0x1d0 [ 51.365402][ T5206] el0t_64_sync_handler+0xcc/0xe4 [ 51.366396][ T5206] el0t_64_sync+0x1a0/0x1a4 [ 51.367275][ T5206] irq event stamp: 80518 [ 51.368078][ T5206] hardirqs last enabled at (80517): [] __up_console_sem+0xb4/0xfc [ 51.369910][ T5206] hardirqs last disabled at (80518): [] el1_dbg+0x24/0x80 [ 51.371589][ T5206] softirqs last enabled at (80494): [] handle_softirqs+0xa70/0xc14 [ 51.373357][ T5206] softirqs last disabled at (80357): [] __irq_exit_rcu+0x240/0x434 [ 51.375001][ T5206] ---[ end trace b71af0a6ec9a2cf9 ]--- [ 51.376813][ T5206] BTRFS: error (device loop0) in btrfs_replace_file_extents:2983: errno=-12 Out of memory [ 51.378604][ T5206] BTRFS info (device loop0): forced readonly [ 51.547429][ T5227] BTRFS: device fsid 24c7a497-3402-47dd-bef8-82358f5f30e0 devid 1 transid 8 /dev/loop0 scanned by syz-executor.0 (5227) [ 51.551245][ T5227] BTRFS info (device loop0): using crc32c (crc32c-generic) checksum algorithm [ 51.554356][ T5227] BTRFS info (device loop0): using free space tree [ 51.555646][ T5227] BTRFS info (device loop0): has skinny extents [ 51.563961][ T5227] BTRFS info (device loop0): enabling ssd optimizations [ 51.567932][ T5227] FAULT_INJECTION: forcing a failure. [ 51.567932][ T5227] name failslab, interval 1, probability 0, space 0, times 0 [ 51.570156][ T5227] CPU: 1 PID: 5227 Comm: syz-executor.0 Tainted: G W syzkaller #0 [ 51.571668][ T5227] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/02/2026 [ 51.573370][ T5227] Call trace: [ 51.573913][ T5227] dump_backtrace+0x0/0x458 [ 51.574697][ T5227] show_stack+0x2c/0x3c [ 51.575440][ T5227] __dump_stack+0x30/0x40 [ 51.576196][ T5227] dump_stack_lvl+0xf4/0x15c [ 51.576973][ T5227] dump_stack+0x1c/0x5c [ 51.577763][ T5227] should_fail+0x3c8/0x520 [ 51.578555][ T5227] __should_failslab+0xbc/0x10c [ 51.579407][ T5227] should_failslab+0x10/0x28 [ 51.580243][ T5227] slab_pre_alloc_hook+0x64/0xe8 [ 51.581114][ T5227] kmem_cache_alloc+0x94/0x3d8 [ 51.581915][ T5227] btrfs_add_delayed_data_ref+0x3f0/0xd64 [ 51.582897][ T5227] btrfs_alloc_reserved_file_extent+0x1a8/0x2c8 [ 51.583971][ T5227] btrfs_insert_replace_extent+0x818/0x9b0 [ 51.585001][ T5227] btrfs_replace_file_extents+0x8a8/0x1284 [ 51.586016][ T5227] __btrfs_prealloc_file_range+0x35c/0xb80 [ 51.586981][ T5227] btrfs_prealloc_file_range+0x60/0x7c [ 51.587912][ T5227] btrfs_fallocate+0xcb0/0x1720 [ 51.588802][ T5227] vfs_fallocate+0x4a4/0x5fc [ 51.589586][ T5227] ioctl_preallocate+0x234/0x2d4 [ 51.590462][ T5227] do_vfs_ioctl+0x1aa8/0x2404 [ 51.591310][ T5227] __arm64_sys_ioctl+0xe4/0x1c8 [ 51.592146][ T5227] invoke_syscall+0x98/0x28c [ 51.592938][ T5227] el0_svc_common+0x13c/0x258 [ 51.593702][ T5227] do_el0_svc+0x5c/0x140 [ 51.594420][ T5227] el0_svc+0x78/0x1d0 [ 51.595084][ T5227] el0t_64_sync_handler+0xcc/0xe4 [ 51.595894][ T5227] el0t_64_sync+0x1a0/0x1a4 [ 51.598058][ T5227] ------------[ cut here ]------------ [ 51.598984][ T5227] WARNING: CPU: 1 PID: 5227 at fs/btrfs/file.c:2983 btrfs_replace_file_extents+0xd18/0x1284 [ 51.600578][ T5227] Modules linked in: [ 51.601198][ T5227] CPU: 1 PID: 5227 Comm: syz-executor.0 Tainted: G W syzkaller #0 [ 51.602699][ T5227] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/02/2026 [ 51.604385][ T5227] pstate: 62400005 (nZCv daif +PAN -UAO +TCO -DIT -SSBS BTYPE=--) [ 51.605720][ T5227] pc : btrfs_replace_file_extents+0xd18/0x1284 [ 51.606830][ T5227] lr : btrfs_replace_file_extents+0xd18/0x1284 [ 51.607901][ T5227] sp : ffff8000227972a0 [ 51.608609][ T5227] x29: ffff8000227973c0 x28: 00000000fffffff4 x27: ffff800022797560 [ 51.609960][ T5227] x26: 0000000000000000 x25: dfff800000000000 x24: ffff7000044f2e64 [ 51.611251][ T5227] x23: ffff0000e2541d70 x22: ffff0000de9e68f0 x21: ffff0000d322a900 [ 51.612542][ T5227] x20: 1fffe0001bd3cd29 x19: ffff0000de9e6948 x18: 0000000000000000 [ 51.613914][ T5227] x17: 0000000000000000 x16: ffff80001135f958 x15: 0000000000000000 [ 51.615249][ T5227] x14: 0000000000000001 x13: 1fffe000341d09ab x12: 0000000000000000 [ 51.616615][ T5227] x11: ff80800008300a38 x10: 0000000000000000 x9 : ebc00b6d7c1df800 [ 51.617972][ T5227] x8 : ebc00b6d7c1df800 x7 : 0000000000000001 x6 : 0000000000000001 [ 51.619289][ T5227] x5 : ffff800022796bb8 x4 : ffff80001447f520 x3 : ffff80000850fcd0 [ 51.620598][ T5227] x2 : 0000000000000001 x1 : 0000000100000000 x0 : 0000000000000026 [ 51.621916][ T5227] Call trace: [ 51.622442][ T5227] btrfs_replace_file_extents+0xd18/0x1284 [ 51.623379][ T5227] __btrfs_prealloc_file_range+0x35c/0xb80 [ 51.624370][ T5227] btrfs_prealloc_file_range+0x60/0x7c [ 51.625285][ T5227] btrfs_fallocate+0xcb0/0x1720 [ 51.626102][ T5227] vfs_fallocate+0x4a4/0x5fc [ 51.626865][ T5227] ioctl_preallocate+0x234/0x2d4 [ 51.627704][ T5227] do_vfs_ioctl+0x1aa8/0x2404 [ 51.628483][ T5227] __arm64_sys_ioctl+0xe4/0x1c8 [ 51.629274][ T5227] invoke_syscall+0x98/0x28c [ 51.630014][ T5227] el0_svc_common+0x13c/0x258 [ 51.630820][ T5227] do_el0_svc+0x5c/0x140 [ 51.631514][ T5227] el0_svc+0x78/0x1d0 [ 51.632115][ T5227] el0t_64_sync_handler+0xcc/0xe4 [ 51.632926][ T5227] el0t_64_sync+0x1a0/0x1a4 [ 51.633735][ T5227] irq event stamp: 79598 [ 51.634480][ T5227] hardirqs last enabled at (79597): [] __up_console_sem+0xb4/0xfc [ 51.636114][ T5227] hardirqs last disabled at (79598): [] el1_dbg+0x24/0x80 [ 51.637594][ T5227] softirqs last enabled at (79574): [] handle_softirqs+0xa70/0xc14 [ 51.639159][ T5227] softirqs last disabled at (79561): [] __irq_exit_rcu+0x240/0x434 [ 51.640743][ T5227] ---[ end trace b71af0a6ec9a2cfa ]--- [ 51.642556][ T5227] BTRFS: error (device loop0) in btrfs_replace_file_extents:2983: errno=-12 Out of memory [ 51.644195][ T5227] BTRFS info (device loop0): forced readonly