Warning: Permanently added '10.128.1.227' (ED25519) to the list of known hosts. 1970/01/01 00:00:50 ignoring optional flag "type"="gce" 1970/01/01 00:00:50 parsed 1 programs 1970/01/01 00:00:50 executed programs: 0 [ 50.489569][ T4283] Adding 124996k swap on ./swap-file. Priority:0 extents:1 across:124996k SSFS [ 50.553653][ T4290] chnl_net:caif_netlink_parms(): no params data found [ 50.571280][ T4290] bridge0: port 1(bridge_slave_0) entered blocking state [ 50.572755][ T4290] bridge0: port 1(bridge_slave_0) entered disabled state [ 50.574455][ T4290] device bridge_slave_0 entered promiscuous mode [ 50.576540][ T4290] bridge0: port 2(bridge_slave_1) entered blocking state [ 50.577878][ T4290] bridge0: port 2(bridge_slave_1) entered disabled state [ 50.579829][ T4290] device bridge_slave_1 entered promiscuous mode [ 50.587740][ T4290] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 50.590786][ T4290] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 50.598325][ T4290] team0: Port device team_slave_0 added [ 50.600866][ T4290] team0: Port device team_slave_1 added [ 50.609400][ T4290] batman_adv: batadv0: Adding interface: batadv_slave_0 [ 50.610687][ T4290] 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. [ 50.615520][ T4290] batman_adv: batadv0: Not using interface batadv_slave_0 (retrying later): interface not active [ 50.617987][ T4290] batman_adv: batadv0: Adding interface: batadv_slave_1 [ 50.620014][ T4290] 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. [ 50.624215][ T4290] batman_adv: batadv0: Not using interface batadv_slave_1 (retrying later): interface not active [ 50.679689][ T4290] device hsr_slave_0 entered promiscuous mode [ 50.718781][ T4290] device hsr_slave_1 entered promiscuous mode [ 51.219885][ T4290] netdevsim netdevsim0 netdevsim0: renamed from eth0 [ 51.279602][ T4290] netdevsim netdevsim0 netdevsim1: renamed from eth1 [ 51.299862][ T4290] netdevsim netdevsim0 netdevsim2: renamed from eth2 [ 51.359747][ T4290] netdevsim netdevsim0 netdevsim3: renamed from eth3 [ 51.404809][ T4290] bridge0: port 2(bridge_slave_1) entered blocking state [ 51.406189][ T4290] bridge0: port 2(bridge_slave_1) entered forwarding state [ 51.407538][ T4290] bridge0: port 1(bridge_slave_0) entered blocking state [ 51.409015][ T4290] bridge0: port 1(bridge_slave_0) entered forwarding state [ 51.426146][ T4290] 8021q: adding VLAN 0 to HW filter on device bond0 [ 51.430117][ T339] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 51.433062][ T339] bridge0: port 1(bridge_slave_0) entered disabled state [ 51.434673][ T339] bridge0: port 2(bridge_slave_1) entered disabled state [ 51.436754][ T339] IPv6: ADDRCONF(NETDEV_CHANGE): bond0: link becomes ready [ 51.442755][ T4290] 8021q: adding VLAN 0 to HW filter on device team0 [ 51.450766][ T136] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 51.452533][ T136] bridge0: port 1(bridge_slave_0) entered blocking state [ 51.453845][ T136] bridge0: port 1(bridge_slave_0) entered forwarding state [ 51.455438][ T136] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 51.457006][ T136] bridge0: port 2(bridge_slave_1) entered blocking state [ 51.458250][ T136] bridge0: port 2(bridge_slave_1) entered forwarding state [ 51.468103][ T339] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 51.470368][ T339] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 51.472047][ T339] IPv6: ADDRCONF(NETDEV_CHANGE): team0: link becomes ready [ 51.475240][ T339] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 51.478948][ T339] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 51.487321][ T4290] IPv6: ADDRCONF(NETDEV_CHANGE): hsr0: link becomes ready [ 51.529034][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan0: link becomes ready [ 51.530540][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan1: link becomes ready [ 51.532978][ T4290] 8021q: adding VLAN 0 to HW filter on device batadv0 [ 51.539212][ T339] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_virt_wifi: link becomes ready [ 51.545319][ T339] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_vlan: link becomes ready [ 51.546945][ T339] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_vlan: link becomes ready [ 51.550147][ T339] IPv6: ADDRCONF(NETDEV_CHANGE): vlan0: link becomes ready [ 51.551725][ T339] IPv6: ADDRCONF(NETDEV_CHANGE): vlan1: link becomes ready [ 51.557383][ T4290] device veth0_vlan entered promiscuous mode [ 51.562638][ T4290] device veth1_vlan entered promiscuous mode [ 51.570042][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan0: link becomes ready [ 51.571848][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan1: link becomes ready [ 51.573593][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_macvtap: link becomes ready [ 51.575161][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_macvtap: link becomes ready [ 51.577864][ T4290] device veth0_macvtap entered promiscuous mode [ 51.580598][ T4290] device veth1_macvtap entered promiscuous mode [ 51.585421][ T4290] batman_adv: batadv0: Interface activated: batadv_slave_0 [ 51.587934][ T4290] batman_adv: batadv0: Interface activated: batadv_slave_1 [ 51.590421][ T339] IPv6: ADDRCONF(NETDEV_CHANGE): macvtap0: link becomes ready [ 51.592069][ T339] IPv6: ADDRCONF(NETDEV_CHANGE): macsec0: link becomes ready [ 51.593567][ T339] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_0: link becomes ready [ 51.595211][ T339] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_batadv: link becomes ready [ 51.596945][ T339] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_1: link becomes ready [ 51.599633][ T339] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_batadv: link becomes ready [ 51.602821][ T4290] netdevsim netdevsim0 netdevsim0: set [1, 0] type 2 family 0 port 6081 - 0 [ 51.604380][ T4290] netdevsim netdevsim0 netdevsim1: set [1, 0] type 2 family 0 port 6081 - 0 [ 51.605922][ T4290] netdevsim netdevsim0 netdevsim2: set [1, 0] type 2 family 0 port 6081 - 0 [ 51.607442][ T4290] netdevsim netdevsim0 netdevsim3: set [1, 0] type 2 family 0 port 6081 - 0 [ 51.743670][ T4411] loop0: detected capacity change from 0 to 32768 [ 51.758240][ T4411] BTRFS: device fsid c9fe44da-de57-406a-8241-57ec7d4412cf devid 1 transid 8 /dev/loop0 scanned by syz-executor.0 (4411) [ 51.779271][ T4411] BTRFS info (device loop0): using crc32c (crc32c-generic) checksum algorithm [ 51.781232][ T4411] BTRFS info (device loop0): setting nodatacow, compression disabled [ 51.782922][ T4411] BTRFS warning (device loop0): 'usebackuproot' is deprecated, use 'rescue=usebackuproot' instead [ 51.784745][ T4411] BTRFS info (device loop0): trying to use backup root at mount time [ 51.786296][ T4411] BTRFS info (device loop0): metadata ratio 1564 [ 51.787446][ T4411] BTRFS info (device loop0): doing ref verification [ 51.796294][ T4411] BTRFS info (device loop0): force zlib compression, level 3 [ 51.797793][ T4411] BTRFS info (device loop0): turning on flush-on-commit [ 51.800047][ T4411] BTRFS info (device loop0): using free space tree [ 51.801362][ T4411] BTRFS info (device loop0): has skinny extents [ 51.837302][ T4411] BTRFS info (device loop0): enabling ssd optimizations [ 51.856772][ T4411] FAULT_INJECTION: forcing a failure. [ 51.856772][ T4411] name failslab, interval 1, probability 0, space 0, times 1 [ 51.860482][ T4411] CPU: 0 PID: 4411 Comm: syz-executor.0 Not tainted syzkaller #0 [ 51.861863][ T4411] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/18/2026 [ 51.863699][ T4411] Call trace: [ 51.864264][ T4411] dump_backtrace+0x0/0x458 [ 51.864997][ T4411] show_stack+0x2c/0x3c [ 51.865734][ T4411] __dump_stack+0x30/0x40 [ 51.866478][ T4411] dump_stack_lvl+0xf4/0x15c [ 51.867327][ T4411] dump_stack+0x1c/0x5c [ 51.868042][ T4411] should_fail+0x3bc/0x514 [ 51.868901][ T4411] __should_failslab+0xbc/0x10c [ 51.869772][ T4411] should_failslab+0x10/0x28 [ 51.870665][ T4411] slab_pre_alloc_hook+0x64/0xe8 [ 51.871622][ T4411] kmem_cache_alloc+0x94/0x3d4 [ 51.872602][ T4411] btrfs_insert_item+0xd0/0x2b8 [ 51.873527][ T4411] btrfs_insert_root+0xa4/0x14c [ 51.874478][ T4411] btrfs_sync_log+0xb34/0x1f5c [ 51.875378][ T4411] btrfs_sync_file+0x9c0/0xebc [ 51.876241][ T4411] vfs_fsync_range+0x168/0x188 [ 51.877141][ T4411] btrfs_file_write_iter+0xa70/0xbb8 [ 51.878117][ T4411] vfs_write+0x590/0xa60 [ 51.878913][ T4411] ksys_write+0x12c/0x224 [ 51.879762][ T4411] __arm64_sys_write+0x7c/0x90 [ 51.880657][ T4411] invoke_syscall+0x98/0x2b0 [ 51.881533][ T4411] el0_svc_common+0x138/0x258 [ 51.882394][ T4411] do_el0_svc+0x58/0x13c [ 51.883169][ T4411] el0_svc+0x78/0x1d0 [ 51.883887][ T4411] el0t_64_sync_handler+0xcc/0xe4 [ 51.884800][ T4411] el0t_64_sync+0x1a0/0x1a4 [ 51.891384][ T4411] ------------[ cut here ]------------ [ 51.898961][ T4411] WARNING: CPU: 0 PID: 4411 at fs/btrfs/tree-log.c:3224 btrfs_sync_log+0x1438/0x1f5c [ 51.900557][ T4411] Modules linked in: [ 51.901223][ T4411] CPU: 0 PID: 4411 Comm: syz-executor.0 Not tainted syzkaller #0 [ 51.902503][ T4411] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/18/2026 [ 51.904320][ T4411] pstate: 62400005 (nZCv daif +PAN -UAO +TCO -DIT -SSBS BTYPE=--) [ 51.905810][ T4411] pc : btrfs_sync_log+0x1438/0x1f5c [ 51.906729][ T4411] lr : btrfs_sync_log+0x1438/0x1f5c [ 51.907692][ T4411] sp : ffff80001f3773e0 [ 51.908485][ T4411] x29: ffff80001f3777e0 x28: 1fffe0001bc38416 x27: ffff0000de1c2108 [ 51.910102][ T4411] x26: dfff800000000000 x25: ffff0000de1c20b0 x24: 00000000fffffff4 [ 51.911611][ T4411] x23: ffff0000c7af0000 x22: ffff0000d16404e0 x21: 0000000000000000 [ 51.913113][ T4411] x20: ffff0000c2120000 x19: 0000000000000009 x18: 0000000000000001 [ 51.914630][ T4411] x17: 0000000000000000 x16: ffff80001125f22c x15: 00000000ffffffff [ 51.916087][ T4411] x14: 0000000000000001 x13: 1fffe000341f05ab x12: 0000000000ff0100 [ 51.917571][ T4411] x11: 0000000000000000 x10: 0000000000000000 x9 : d1fcbd4f69c3ea00 [ 51.919050][ T4411] x8 : d1fcbd4f69c3ea00 x7 : 0000000000000001 x6 : 0000000000000001 [ 51.920623][ T4411] x5 : ffff80001f376cf8 x4 : ffff80001437f3e0 x3 : ffff80000850932c [ 51.922239][ T4411] x2 : 0000000000000001 x1 : 0000000100000000 x0 : 0000000000000026 [ 51.923791][ T4411] Call trace: [ 51.924414][ T4411] btrfs_sync_log+0x1438/0x1f5c [ 51.925339][ T4411] btrfs_sync_file+0x9c0/0xebc [ 51.926302][ T4411] vfs_fsync_range+0x168/0x188 [ 51.927202][ T4411] btrfs_file_write_iter+0xa70/0xbb8 [ 51.928213][ T4411] vfs_write+0x590/0xa60 [ 51.929051][ T4411] ksys_write+0x12c/0x224 [ 51.929856][ T4411] __arm64_sys_write+0x7c/0x90 [ 51.930614][ T4411] invoke_syscall+0x98/0x2b0 [ 51.931464][ T4411] el0_svc_common+0x138/0x258 [ 51.932404][ T4411] do_el0_svc+0x58/0x13c [ 51.933177][ T4411] el0_svc+0x78/0x1d0 [ 51.934088][ T4411] el0t_64_sync_handler+0xcc/0xe4 [ 51.935081][ T4411] el0t_64_sync+0x1a0/0x1a4 [ 51.935973][ T4411] irq event stamp: 81992 [ 51.936792][ T4411] hardirqs last enabled at (81991): [] __up_console_sem+0xb4/0xfc [ 51.938551][ T4411] hardirqs last disabled at (81992): [] el1_dbg+0x24/0x80 [ 51.940243][ T4411] softirqs last enabled at (81962): [] handle_softirqs+0xa40/0xbe4 [ 51.942082][ T4411] softirqs last disabled at (81865): [] __irq_exit_rcu+0x240/0x43c [ 51.943842][ T4411] ---[ end trace 97398f66ba0e41a6 ]--- [ 51.947866][ T4411] BTRFS: error (device loop0) in btrfs_sync_log:3224: errno=-12 Out of memory [ 51.949593][ T4411] BTRFS info (device loop0): forced readonly [ 52.129545][ T4484] loop0: detected capacity change from 0 to 32768 [ 52.132212][ T4484] BTRFS: device fsid c9fe44da-de57-406a-8241-57ec7d4412cf devid 1 transid 8 /dev/loop0 scanned by syz-executor.0 (4484) [ 52.140460][ T4484] BTRFS info (device loop0): using crc32c (crc32c-generic) checksum algorithm [ 52.142282][ T4484] BTRFS info (device loop0): setting nodatacow, compression disabled [ 52.143903][ T4484] BTRFS warning (device loop0): 'usebackuproot' is deprecated, use 'rescue=usebackuproot' instead [ 52.145926][ T4484] BTRFS info (device loop0): trying to use backup root at mount time [ 52.147661][ T4484] BTRFS info (device loop0): metadata ratio 1564 [ 52.149008][ T4484] BTRFS info (device loop0): doing ref verification [ 52.150257][ T4484] BTRFS info (device loop0): force zlib compression, level 3 [ 52.151661][ T4484] BTRFS info (device loop0): turning on flush-on-commit [ 52.152987][ T4484] BTRFS info (device loop0): using free space tree [ 52.154317][ T4484] BTRFS info (device loop0): has skinny extents [ 52.200917][ T4484] BTRFS info (device loop0): enabling ssd optimizations [ 52.213253][ T4484] FAULT_INJECTION: forcing a failure. [ 52.213253][ T4484] name failslab, interval 1, probability 0, space 0, times 0 [ 52.215589][ T4484] CPU: 0 PID: 4484 Comm: syz-executor.0 Tainted: G W syzkaller #0 [ 52.217215][ T4484] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/18/2026 [ 52.219036][ T4484] Call trace: [ 52.219644][ T4484] dump_backtrace+0x0/0x458 [ 52.220490][ T4484] show_stack+0x2c/0x3c [ 52.221275][ T4484] __dump_stack+0x30/0x40 [ 52.221997][ T4484] dump_stack_lvl+0xf4/0x15c [ 52.222805][ T4484] dump_stack+0x1c/0x5c [ 52.223588][ T4484] should_fail+0x3bc/0x514 [ 52.224430][ T4484] __should_failslab+0xbc/0x10c [ 52.225296][ T4484] should_failslab+0x10/0x28 [ 52.226090][ T4484] slab_pre_alloc_hook+0x64/0xe8 [ 52.226987][ T4484] kmem_cache_alloc+0x94/0x3d4 [ 52.227886][ T4484] alloc_extent_state+0x38/0x42c [ 52.228880][ T4484] convert_extent_bit+0x17c/0x16ec [ 52.229852][ T4484] btrfs_write_marked_extents+0x178/0x364 [ 52.230924][ T4484] btrfs_sync_log+0x12f8/0x1f5c [ 52.231957][ T4484] btrfs_sync_file+0x9c0/0xebc [ 52.232871][ T4484] vfs_fsync_range+0x168/0x188 [ 52.233792][ T4484] btrfs_file_write_iter+0xa70/0xbb8 [ 52.234745][ T4484] vfs_write+0x590/0xa60 [ 52.235574][ T4484] ksys_write+0x12c/0x224 [ 52.236357][ T4484] __arm64_sys_write+0x7c/0x90 [ 52.237274][ T4484] invoke_syscall+0x98/0x2b0 [ 52.238096][ T4484] el0_svc_common+0x138/0x258 [ 52.238987][ T4484] do_el0_svc+0x58/0x13c [ 52.239805][ T4484] el0_svc+0x78/0x1d0 [ 52.240665][ T4484] el0t_64_sync_handler+0xcc/0xe4 [ 52.241614][ T4484] el0t_64_sync+0x1a0/0x1a4 [ 52.430368][ T4550] loop0: detected capacity change from 0 to 32768 [ 52.435298][ T4550] BTRFS: device fsid c9fe44da-de57-406a-8241-57ec7d4412cf devid 1 transid 8 /dev/loop0 scanned by syz-executor.0 (4550) [ 52.441307][ T4550] BTRFS info (device loop0): using crc32c (crc32c-generic) checksum algorithm [ 52.443113][ T4550] BTRFS info (device loop0): setting nodatacow, compression disabled [ 52.444613][ T4550] BTRFS warning (device loop0): 'usebackuproot' is deprecated, use 'rescue=usebackuproot' instead [ 52.446606][ T4550] BTRFS info (device loop0): trying to use backup root at mount time [ 52.448189][ T4550] BTRFS info (device loop0): metadata ratio 1564 [ 52.449640][ T4550] BTRFS info (device loop0): doing ref verification [ 52.452322][ T4550] BTRFS info (device loop0): force zlib compression, level 3 [ 52.453819][ T4550] BTRFS info (device loop0): turning on flush-on-commit [ 52.455281][ T4550] BTRFS info (device loop0): using free space tree [ 52.456602][ T4550] BTRFS info (device loop0): has skinny extents [ 52.510846][ T4550] BTRFS info (device loop0): enabling ssd optimizations [ 52.516189][ T4550] FAULT_INJECTION: forcing a failure. [ 52.516189][ T4550] name failslab, interval 1, probability 0, space 0, times 0 [ 52.520936][ T4550] CPU: 1 PID: 4550 Comm: syz-executor.0 Tainted: G W syzkaller #0 [ 52.522694][ T4550] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/18/2026 [ 52.524499][ T4550] Call trace: [ 52.525098][ T4550] dump_backtrace+0x0/0x458 [ 52.525887][ T4550] show_stack+0x2c/0x3c [ 52.526634][ T4550] __dump_stack+0x30/0x40 [ 52.527383][ T4550] dump_stack_lvl+0xf4/0x15c [ 52.528204][ T4550] dump_stack+0x1c/0x5c [ 52.529013][ T4550] should_fail+0x3bc/0x514 [ 52.529933][ T4550] __should_failslab+0xbc/0x10c [ 52.530945][ T4550] should_failslab+0x10/0x28 [ 52.531939][ T4550] slab_pre_alloc_hook+0x64/0xe8 [ 52.532964][ T4550] kmem_cache_alloc+0x94/0x3d4 [ 52.533904][ T4550] btrfs_insert_item+0xd0/0x2b8 [ 52.534888][ T4550] btrfs_insert_root+0xa4/0x14c [ 52.535851][ T4550] btrfs_sync_log+0xb34/0x1f5c [ 52.536734][ T4550] btrfs_sync_file+0x9c0/0xebc [ 52.537612][ T4550] vfs_fsync_range+0x168/0x188 [ 52.538519][ T4550] btrfs_file_write_iter+0xa70/0xbb8 [ 52.539504][ T4550] vfs_write+0x590/0xa60 [ 52.540322][ T4550] ksys_write+0x12c/0x224 [ 52.541146][ T4550] __arm64_sys_write+0x7c/0x90 [ 52.542035][ T4550] invoke_syscall+0x98/0x2b0 [ 52.542898][ T4550] el0_svc_common+0x138/0x258 [ 52.543819][ T4550] do_el0_svc+0x58/0x13c [ 52.544695][ T4550] el0_svc+0x78/0x1d0 [ 52.545502][ T4550] el0t_64_sync_handler+0xcc/0xe4 [ 52.546495][ T4550] el0t_64_sync+0x1a0/0x1a4 [ 52.551159][ T4550] ------------[ cut here ]------------ [ 52.552556][ T4550] WARNING: CPU: 0 PID: 4550 at fs/btrfs/tree-log.c:3224 btrfs_sync_log+0x1438/0x1f5c [ 52.554232][ T4550] Modules linked in: [ 52.554926][ T4550] CPU: 0 PID: 4550 Comm: syz-executor.0 Tainted: G W syzkaller #0 [ 52.556603][ T4550] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/18/2026 [ 52.558499][ T4550] pstate: 62400005 (nZCv daif +PAN -UAO +TCO -DIT -SSBS BTYPE=--) [ 52.559929][ T4550] pc : btrfs_sync_log+0x1438/0x1f5c [ 52.560900][ T4550] lr : btrfs_sync_log+0x1438/0x1f5c [ 52.561823][ T4550] sp : ffff80001f3f73e0 [ 52.562530][ T4550] x29: ffff80001f3f77e0 x28: 1fffe0001bc384c6 x27: ffff0000de1c2688 [ 52.563949][ T4550] x26: dfff800000000000 x25: ffff0000de1c2630 x24: 00000000fffffff4 [ 52.565458][ T4550] x23: ffff0000db442000 x22: ffff0000c970c4e0 x21: 0000000000000000 [ 52.566902][ T4550] x20: ffff0000cd372000 x19: 0000000000000009 x18: 0000000000000001 [ 52.568346][ T4550] x17: 0000000000000000 x16: ffff80001125f22c x15: 00000000ffffffff [ 52.569786][ T4550] x14: 0000000000000001 x13: 1fffe000341f05ab x12: 0000000000ff0100 [ 52.571182][ T4550] x11: 0000000000000000 x10: 0000000000000000 x9 : e78272417c4edb00 [ 52.572535][ T4550] x8 : e78272417c4edb00 x7 : 0000000000000001 x6 : 0000000000000001 [ 52.573980][ T4550] x5 : ffff80001f3f6cf8 x4 : ffff80001437f3e0 x3 : ffff80000850932c [ 52.575402][ T4550] x2 : 0000000000000001 x1 : 0000000100000000 x0 : 0000000000000026 [ 52.576921][ T4550] Call trace: [ 52.577546][ T4550] btrfs_sync_log+0x1438/0x1f5c [ 52.578439][ T4550] btrfs_sync_file+0x9c0/0xebc [ 52.579392][ T4550] vfs_fsync_range+0x168/0x188 [ 52.580349][ T4550] btrfs_file_write_iter+0xa70/0xbb8 [ 52.581322][ T4550] vfs_write+0x590/0xa60 [ 52.582114][ T4550] ksys_write+0x12c/0x224 [ 52.582889][ T4550] __arm64_sys_write+0x7c/0x90 [ 52.583781][ T4550] invoke_syscall+0x98/0x2b0 [ 52.584591][ T4550] el0_svc_common+0x138/0x258 [ 52.585468][ T4550] do_el0_svc+0x58/0x13c [ 52.586283][ T4550] el0_svc+0x78/0x1d0 [ 52.586996][ T4550] el0t_64_sync_handler+0xcc/0xe4 [ 52.587898][ T4550] el0t_64_sync+0x1a0/0x1a4 [ 52.588747][ T4550] irq event stamp: 79602 [ 52.589532][ T4550] hardirqs last enabled at (79601): [] __up_console_sem+0xb4/0xfc [ 52.591261][ T4550] hardirqs last disabled at (79602): [] el1_dbg+0x24/0x80 [ 52.592835][ T4550] softirqs last enabled at (79572): [] handle_softirqs+0xa40/0xbe4 [ 52.594539][ T4550] softirqs last disabled at (79537): [] __irq_exit_rcu+0x240/0x43c [ 52.596241][ T4550] ---[ end trace 97398f66ba0e41a7 ]--- [ 52.598914][ T4066] Bluetooth: hci0: command 0x0409 tx timeout [ 52.600667][ T4550] BTRFS: error (device loop0) in btrfs_sync_log:3224: errno=-12 Out of memory [ 52.602536][ T4550] BTRFS info (device loop0): forced readonly [ 52.809696][ T4606] loop0: detected capacity change from 0 to 32768 [ 52.819691][ T4606] BTRFS: device fsid c9fe44da-de57-406a-8241-57ec7d4412cf devid 1 transid 8 /dev/loop0 scanned by syz-executor.0 (4606) [ 52.829858][ T4606] BTRFS info (device loop0): using crc32c (crc32c-generic) checksum algorithm [ 52.831510][ T4606] BTRFS info (device loop0): setting nodatacow, compression disabled [ 52.832972][ T4606] BTRFS warning (device loop0): 'usebackuproot' is deprecated, use 'rescue=usebackuproot' instead [ 52.835026][ T4606] BTRFS info (device loop0): trying to use backup root at mount time [ 52.836531][ T4606] BTRFS info (device loop0): metadata ratio 1564 [ 52.837686][ T4606] BTRFS info (device loop0): doing ref verification [ 52.839744][ T4606] BTRFS info (device loop0): force zlib compression, level 3 [ 52.841037][ T4606] BTRFS info (device loop0): turning on flush-on-commit [ 52.842303][ T4606] BTRFS info (device loop0): using free space tree [ 52.843506][ T4606] BTRFS info (device loop0): has skinny extents [ 52.886590][ T4606] BTRFS info (device loop0): enabling ssd optimizations [ 52.911923][ T4606] FAULT_INJECTION: forcing a failure. [ 52.911923][ T4606] name failslab, interval 1, probability 0, space 0, times 0 [ 52.914316][ T4606] CPU: 0 PID: 4606 Comm: syz-executor.0 Tainted: G W syzkaller #0 [ 52.915882][ T4606] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/18/2026 [ 52.917630][ T4606] Call trace: [ 52.918181][ T4606] dump_backtrace+0x0/0x458 [ 52.919025][ T4606] show_stack+0x2c/0x3c [ 52.919809][ T4606] __dump_stack+0x30/0x40 [ 52.920690][ T4606] dump_stack_lvl+0xf4/0x15c [ 52.921570][ T4606] dump_stack+0x1c/0x5c [ 52.922377][ T4606] should_fail+0x3bc/0x514 [ 52.923231][ T4606] __should_failslab+0xbc/0x10c [ 52.924163][ T4606] should_failslab+0x10/0x28 [ 52.925025][ T4606] slab_pre_alloc_hook+0x64/0xe8 [ 52.926012][ T4606] kmem_cache_alloc+0x94/0x3d4 [ 52.926904][ T4606] mempool_alloc_slab+0x58/0x74 [ 52.927902][ T4606] mempool_alloc+0x144/0x3f0 [ 52.928764][ T4606] bio_alloc_bioset+0x118/0x718 [ 52.929663][ T4606] submit_extent_page+0x424/0x11d4 [ 52.930618][ T4606] write_one_eb+0x1bc/0x55c [ 52.931480][ T4606] btree_write_cache_pages+0xef4/0x149c [ 52.932503][ T4606] btree_writepages+0x6c/0x190 [ 52.933418][ T4606] do_writepages+0x364/0x584 [ 52.934166][ T4606] filemap_fdatawrite_wbc+0x1d4/0x234 [ 52.935119][ T4606] filemap_fdatawrite_range+0xc0/0x114 [ 52.936060][ T4606] btrfs_write_marked_extents+0x1bc/0x364 [ 52.937139][ T4606] btrfs_sync_log+0x12f8/0x1f5c [ 52.938053][ T4606] btrfs_sync_file+0x9c0/0xebc [ 52.938849][ T4606] vfs_fsync_range+0x168/0x188 [ 52.939714][ T4606] btrfs_file_write_iter+0xa70/0xbb8 [ 52.940680][ T4606] vfs_write+0x590/0xa60 [ 52.941482][ T4606] ksys_write+0x12c/0x224 [ 52.942309][ T4606] __arm64_sys_write+0x7c/0x90 [ 52.943235][ T4606] invoke_syscall+0x98/0x2b0 [ 52.944051][ T4606] el0_svc_common+0x138/0x258 [ 52.944946][ T4606] do_el0_svc+0x58/0x13c [ 52.945767][ T4606] el0_svc+0x78/0x1d0 [ 52.946530][ T4606] el0t_64_sync_handler+0xcc/0xe4 [ 52.947531][ T4606] el0t_64_sync+0x1a0/0x1a4 [ 53.129647][ T4663] loop0: detected capacity change from 0 to 32768 [ 53.141438][ T4663] BTRFS: device fsid c9fe44da-de57-406a-8241-57ec7d4412cf devid 1 transid 8 /dev/loop0 scanned by syz-executor.0 (4663) [ 53.152224][ T4663] BTRFS info (device loop0): using crc32c (crc32c-generic) checksum algorithm [ 53.157404][ T4663] BTRFS info (device loop0): setting nodatacow, compression disabled [ 53.164953][ T4663] BTRFS warning (device loop0): 'usebackuproot' is deprecated, use 'rescue=usebackuproot' instead [ 53.167150][ T4663] BTRFS info (device loop0): trying to use backup root at mount time [ 53.169964][ T4663] BTRFS info (device loop0): metadata ratio 1564 [ 53.171315][ T4663] BTRFS info (device loop0): doing ref verification [ 53.172663][ T4663] BTRFS info (device loop0): force zlib compression, level 3 [ 53.174111][ T4663] BTRFS info (device loop0): turning on flush-on-commit [ 53.175558][ T4663] BTRFS info (device loop0): using free space tree [ 53.176810][ T4663] BTRFS info (device loop0): has skinny extents [ 53.217095][ T4663] BTRFS info (device loop0): enabling ssd optimizations [ 53.223824][ T4663] FAULT_INJECTION: forcing a failure. [ 53.223824][ T4663] name failslab, interval 1, probability 0, space 0, times 0 [ 53.227854][ T4663] CPU: 0 PID: 4663 Comm: syz-executor.0 Tainted: G W syzkaller #0 [ 53.229454][ T4663] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/18/2026 [ 53.231395][ T4663] Call trace: [ 53.232007][ T4663] dump_backtrace+0x0/0x458 [ 53.232869][ T4663] show_stack+0x2c/0x3c [ 53.233672][ T4663] __dump_stack+0x30/0x40 [ 53.234449][ T4663] dump_stack_lvl+0xf4/0x15c [ 53.235290][ T4663] dump_stack+0x1c/0x5c [ 53.236070][ T4663] should_fail+0x3bc/0x514 [ 53.236819][ T4663] __should_failslab+0xbc/0x10c [ 53.237738][ T4663] should_failslab+0x10/0x28 [ 53.238577][ T4663] slab_pre_alloc_hook+0x64/0xe8 [ 53.239470][ T4663] kmem_cache_alloc+0x94/0x3d4 [ 53.240337][ T4663] btrfs_insert_item+0xd0/0x2b8 [ 53.241201][ T4663] btrfs_insert_root+0xa4/0x14c [ 53.242174][ T4663] btrfs_sync_log+0xb34/0x1f5c [ 53.243035][ T4663] btrfs_sync_file+0x9c0/0xebc [ 53.243930][ T4663] vfs_fsync_range+0x168/0x188 [ 53.244827][ T4663] btrfs_file_write_iter+0xa70/0xbb8 [ 53.245791][ T4663] vfs_write+0x590/0xa60 [ 53.246524][ T4663] ksys_write+0x12c/0x224 [ 53.247368][ T4663] __arm64_sys_write+0x7c/0x90 [ 53.248320][ T4663] invoke_syscall+0x98/0x2b0 [ 53.249149][ T4663] el0_svc_common+0x138/0x258 [ 53.249992][ T4663] do_el0_svc+0x58/0x13c [ 53.250822][ T4663] el0_svc+0x78/0x1d0 [ 53.251604][ T4663] el0t_64_sync_handler+0xcc/0xe4 [ 53.252565][ T4663] el0t_64_sync+0x1a0/0x1a4 [ 53.255216][ T4663] ------------[ cut here ]------------ [ 53.268362][ T4663] WARNING: CPU: 0 PID: 4663 at fs/btrfs/tree-log.c:3224 btrfs_sync_log+0x1438/0x1f5c [ 53.270043][ T4663] Modules linked in: [ 53.270768][ T4663] CPU: 0 PID: 4663 Comm: syz-executor.0 Tainted: G W syzkaller #0 [ 53.272568][ T4663] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/18/2026 [ 53.274432][ T4663] pstate: 62400005 (nZCv daif +PAN -UAO +TCO -DIT -SSBS BTYPE=--) [ 53.275948][ T4663] pc : btrfs_sync_log+0x1438/0x1f5c [ 53.276952][ T4663] lr : btrfs_sync_log+0x1438/0x1f5c [ 53.277957][ T4663] sp : ffff80001f3373e0 [ 53.278753][ T4663] x29: ffff80001f3377e0 x28: 1fffe0001bc38534 x27: ffff0000de1c29f8 [ 53.280208][ T4663] x26: dfff800000000000 x25: ffff0000de1c29a0 x24: 00000000fffffff4 [ 53.281788][ T4663] x23: ffff0000e3db0000 x22: ffff0000ce20c4e0 x21: 0000000000000000 [ 53.283372][ T4663] x20: ffff0000d4ece000 x19: 0000000000000009 x18: 0000000000000002 [ 53.284893][ T4663] x17: 0000000040000000 x16: ffff80001125f22c x15: 0000000000000002 [ 53.286433][ T4663] x14: 0000000000000001 x13: 1fffe000341f05ab x12: 0000000000ff0100 [ 53.287869][ T4663] x11: 0000000000000000 x10: 0000000000000000 x9 : 336cbc112e9a6b00 [ 53.289318][ T4663] x8 : 336cbc112e9a6b00 x7 : 0000000000000000 x6 : 0000000000000000 [ 53.290751][ T4663] x5 : 0000000000000080 x4 : 0000000000000000 x3 : ffff80000850932c [ 53.292283][ T4663] x2 : 0000000000000001 x1 : 0000000100000000 x0 : 0000000000000026 [ 53.293865][ T4663] Call trace: [ 53.294559][ T4663] btrfs_sync_log+0x1438/0x1f5c [ 53.295521][ T4663] btrfs_sync_file+0x9c0/0xebc [ 53.296441][ T4663] vfs_fsync_range+0x168/0x188 [ 53.297310][ T4663] btrfs_file_write_iter+0xa70/0xbb8 [ 53.298295][ T4663] vfs_write+0x590/0xa60 [ 53.299072][ T4663] ksys_write+0x12c/0x224 [ 53.299877][ T4663] __arm64_sys_write+0x7c/0x90 [ 53.300773][ T4663] invoke_syscall+0x98/0x2b0 [ 53.301608][ T4663] el0_svc_common+0x138/0x258 [ 53.302506][ T4663] do_el0_svc+0x58/0x13c [ 53.303243][ T4663] el0_svc+0x78/0x1d0 [ 53.303959][ T4663] el0t_64_sync_handler+0xcc/0xe4 [ 53.304901][ T4663] el0t_64_sync+0x1a0/0x1a4 [ 53.305762][ T4663] irq event stamp: 79936 [ 53.306580][ T4663] hardirqs last enabled at (79935): [] finish_lock_switch+0xb0/0x1c4 [ 53.308383][ T4663] hardirqs last disabled at (79936): [] el1_dbg+0x24/0x80 [ 53.310010][ T4663] softirqs last enabled at (79890): [] handle_softirqs+0xa40/0xbe4 [ 53.311759][ T4663] softirqs last disabled at (79839): [] __irq_exit_rcu+0x240/0x43c [ 53.313439][ T4663] ---[ end trace 97398f66ba0e41a8 ]--- [ 53.338602][ T4663] BTRFS: error (device loop0) in btrfs_sync_log:3224: errno=-12 Out of memory [ 53.340313][ T4663] BTRFS info (device loop0): forced readonly [ 53.558318][ T4731] loop0: detected capacity change from 0 to 32768 [ 53.569111][ T4731] BTRFS: device fsid c9fe44da-de57-406a-8241-57ec7d4412cf devid 1 transid 8 /dev/loop0 scanned by syz-executor.0 (4731) [ 53.576064][ T4731] BTRFS info (device loop0): using crc32c (crc32c-generic) checksum algorithm [ 53.578003][ T4731] BTRFS info (device loop0): setting nodatacow, compression disabled [ 53.580398][ T4731] BTRFS warning (device loop0): 'usebackuproot' is deprecated, use 'rescue=usebackuproot' instead [ 53.582490][ T4731] BTRFS info (device loop0): trying to use backup root at mount time [ 53.584096][ T4731] BTRFS info (device loop0): metadata ratio 1564 [ 53.585293][ T4731] BTRFS info (device loop0): doing ref verification [ 53.586669][ T4731] BTRFS info (device loop0): force zlib compression, level 3 [ 53.588175][ T4731] BTRFS info (device loop0): turning on flush-on-commit [ 53.589840][ T4731] BTRFS info (device loop0): using free space tree [ 53.591107][ T4731] BTRFS info (device loop0): has skinny extents [ 53.644514][ T4731] BTRFS info (device loop0): enabling ssd optimizations [ 53.662321][ T4731] FAULT_INJECTION: forcing a failure. [ 53.662321][ T4731] name failslab, interval 1, probability 0, space 0, times 0 [ 53.664998][ T4731] CPU: 0 PID: 4731 Comm: syz-executor.0 Tainted: G W syzkaller #0 [ 53.666640][ T4731] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/18/2026 [ 53.668322][ T4731] Call trace: [ 53.668941][ T4731] dump_backtrace+0x0/0x458 [ 53.669906][ T4731] show_stack+0x2c/0x3c [ 53.670675][ T4731] __dump_stack+0x30/0x40 [ 53.671476][ T4731] dump_stack_lvl+0xf4/0x15c [ 53.672312][ T4731] dump_stack+0x1c/0x5c [ 53.673064][ T4731] should_fail+0x3bc/0x514 [ 53.673958][ T4731] __should_failslab+0xbc/0x10c [ 53.674861][ T4731] should_failslab+0x10/0x28 [ 53.675697][ T4731] slab_pre_alloc_hook+0x64/0xe8 [ 53.676600][ T4731] kmem_cache_alloc+0x94/0x3d4 [ 53.677526][ T4731] alloc_extent_state+0x38/0x42c [ 53.678469][ T4731] convert_extent_bit+0x17c/0x16ec [ 53.679363][ T4731] btrfs_write_marked_extents+0x178/0x364 [ 53.680395][ T4731] btrfs_sync_log+0x12f8/0x1f5c [ 53.681369][ T4731] btrfs_sync_file+0x9c0/0xebc [ 53.682331][ T4731] vfs_fsync_range+0x168/0x188 [ 53.683244][ T4731] btrfs_file_write_iter+0xa70/0xbb8 [ 53.684157][ T4731] vfs_write+0x590/0xa60 [ 53.684965][ T4731] ksys_write+0x12c/0x224 [ 53.685755][ T4731] __arm64_sys_write+0x7c/0x90 [ 53.686631][ T4731] invoke_syscall+0x98/0x2b0 [ 53.687560][ T4731] el0_svc_common+0x138/0x258 [ 53.688433][ T4731] do_el0_svc+0x58/0x13c [ 53.689220][ T4731] el0_svc+0x78/0x1d0 [ 53.690000][ T4731] el0t_64_sync_handler+0xcc/0xe4 [ 53.690942][ T4731] el0t_64_sync+0x1a0/0x1a4 [ 53.892135][ T4783] loop0: detected capacity change from 0 to 32768 [ 53.895887][ T4783] BTRFS: device fsid c9fe44da-de57-406a-8241-57ec7d4412cf devid 1 transid 8 /dev/loop0 scanned by syz-executor.0 (4783) [ 53.902299][ T4783] BTRFS info (device loop0): using crc32c (crc32c-generic) checksum algorithm [ 53.903890][ T4783] BTRFS info (device loop0): setting nodatacow, compression disabled [ 53.905331][ T4783] BTRFS warning (device loop0): 'usebackuproot' is deprecated, use 'rescue=usebackuproot' instead [ 53.907174][ T4783] BTRFS info (device loop0): trying to use backup root at mount time [ 53.908966][ T4783] BTRFS info (device loop0): metadata ratio 1564 [ 53.910109][ T4783] BTRFS info (device loop0): doing ref verification [ 53.911300][ T4783] BTRFS info (device loop0): force zlib compression, level 3 [ 53.912653][ T4783] BTRFS info (device loop0): turning on flush-on-commit [ 53.913828][ T4783] BTRFS info (device loop0): using free space tree [ 53.915032][ T4783] BTRFS info (device loop0): has skinny extents [ 53.924830][ T4783] BTRFS info (device loop0): enabling ssd optimizations [ 53.930748][ T4783] FAULT_INJECTION: forcing a failure. [ 53.930748][ T4783] name failslab, interval 1, probability 0, space 0, times 0 [ 53.933395][ T4783] CPU: 1 PID: 4783 Comm: syz-executor.0 Tainted: G W syzkaller #0 [ 53.935204][ T4783] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/18/2026 [ 53.937185][ T4783] Call trace: [ 53.937891][ T4783] dump_backtrace+0x0/0x458 [ 53.938766][ T4783] show_stack+0x2c/0x3c [ 53.939578][ T4783] __dump_stack+0x30/0x40 [ 53.940447][ T4783] dump_stack_lvl+0xf4/0x15c [ 53.941346][ T4783] dump_stack+0x1c/0x5c [ 53.942193][ T4783] should_fail+0x3bc/0x514 [ 53.943106][ T4783] __should_failslab+0xbc/0x10c [ 53.944069][ T4783] should_failslab+0x10/0x28 [ 53.944994][ T4783] slab_pre_alloc_hook+0x64/0xe8 [ 53.945969][ T4783] kmem_cache_alloc+0x94/0x3d4 [ 53.946877][ T4783] alloc_extent_state+0x38/0x42c [ 53.947842][ T4783] convert_extent_bit+0x17c/0x16ec [ 53.948848][ T4783] btrfs_write_marked_extents+0x178/0x364 [ 53.949983][ T4783] btrfs_sync_log+0x12f8/0x1f5c [ 53.950947][ T4783] btrfs_sync_file+0x9c0/0xebc [ 53.951863][ T4783] vfs_fsync_range+0x168/0x188 [ 53.952815][ T4783] btrfs_file_write_iter+0xa70/0xbb8 [ 53.953889][ T4783] vfs_write+0x590/0xa60 [ 53.954751][ T4783] ksys_write+0x12c/0x224 [ 53.955628][ T4783] __arm64_sys_write+0x7c/0x90 [ 53.956595][ T4783] invoke_syscall+0x98/0x2b0 [ 53.957475][ T4783] el0_svc_common+0x138/0x258 [ 53.958429][ T4783] do_el0_svc+0x58/0x13c [ 53.959290][ T4783] el0_svc+0x78/0x1d0 [ 53.960048][ T4783] el0t_64_sync_handler+0xcc/0xe4 [ 53.961006][ T4783] el0t_64_sync+0x1a0/0x1a4 [ 54.161116][ T4817] loop0: detected capacity change from 0 to 32768 [ 54.163626][ T4817] BTRFS: device fsid c9fe44da-de57-406a-8241-57ec7d4412cf devid 1 transid 8 /dev/loop0 scanned by syz-executor.0 (4817) [ 54.168255][ T4817] BTRFS info (device loop0): using crc32c (crc32c-generic) checksum algorithm [ 54.170197][ T4817] BTRFS info (device loop0): setting nodatacow, compression disabled [ 54.171670][ T4817] BTRFS warning (device loop0): 'usebackuproot' is deprecated, use 'rescue=usebackuproot' instead [ 54.173693][ T4817] BTRFS info (device loop0): trying to use backup root at mount time [ 54.175318][ T4817] BTRFS info (device loop0): metadata ratio 1564 [ 54.176587][ T4817] BTRFS info (device loop0): doing ref verification [ 54.177797][ T4817] BTRFS info (device loop0): force zlib compression, level 3 [ 54.179506][ T4817] BTRFS info (device loop0): turning on flush-on-commit [ 54.180859][ T4817] BTRFS info (device loop0): using free space tree [ 54.182025][ T4817] BTRFS info (device loop0): has skinny extents [ 54.190313][ T4817] BTRFS info (device loop0): enabling ssd optimizations [ 54.195083][ T4817] FAULT_INJECTION: forcing a failure. [ 54.195083][ T4817] name failslab, interval 1, probability 0, space 0, times 0 [ 54.197431][ T4817] CPU: 0 PID: 4817 Comm: syz-executor.0 Tainted: G W syzkaller #0 [ 54.199132][ T4817] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/18/2026 [ 54.200980][ T4817] Call trace: [ 54.201583][ T4817] dump_backtrace+0x0/0x458 [ 54.202398][ T4817] show_stack+0x2c/0x3c [ 54.203168][ T4817] __dump_stack+0x30/0x40 [ 54.203945][ T4817] dump_stack_lvl+0xf4/0x15c [ 54.204870][ T4817] dump_stack+0x1c/0x5c [ 54.205646][ T4817] should_fail+0x3bc/0x514 [ 54.206457][ T4817] __should_failslab+0xbc/0x10c [ 54.207347][ T4817] should_failslab+0x10/0x28 [ 54.208208][ T4817] slab_pre_alloc_hook+0x64/0xe8 [ 54.209120][ T4817] kmem_cache_alloc+0x94/0x3d4 [ 54.210054][ T4817] mempool_alloc_slab+0x58/0x74 [ 54.210930][ T4817] mempool_alloc+0x144/0x3f0 [ 54.211758][ T4817] bio_alloc_bioset+0x118/0x718 [ 54.212734][ T4817] submit_extent_page+0x424/0x11d4 [ 54.213759][ T4817] write_one_eb+0x1bc/0x55c [ 54.214631][ T4817] btree_write_cache_pages+0xef4/0x149c [ 54.215638][ T4817] btree_writepages+0x6c/0x190 [ 54.216534][ T4817] do_writepages+0x364/0x584 [ 54.217392][ T4817] filemap_fdatawrite_wbc+0x1d4/0x234 [ 54.218365][ T4817] filemap_fdatawrite_range+0xc0/0x114 [ 54.219410][ T4817] btrfs_write_marked_extents+0x1bc/0x364 [ 54.220485][ T4817] btrfs_sync_log+0x764/0x1f5c [ 54.221372][ T4817] btrfs_sync_file+0x9c0/0xebc [ 54.222301][ T4817] vfs_fsync_range+0x168/0x188 [ 54.223208][ T4817] btrfs_file_write_iter+0xa70/0xbb8 [ 54.224193][ T4817] vfs_write+0x590/0xa60 [ 54.225013][ T4817] ksys_write+0x12c/0x224 [ 54.225821][ T4817] __arm64_sys_write+0x7c/0x90 [ 54.226673][ T4817] invoke_syscall+0x98/0x2b0 [ 54.227539][ T4817] el0_svc_common+0x138/0x258 [ 54.228462][ T4817] do_el0_svc+0x58/0x13c [ 54.229280][ T4817] el0_svc+0x78/0x1d0 [ 54.230046][ T4817] el0t_64_sync_handler+0xcc/0xe4 [ 54.231038][ T4817] el0t_64_sync+0x1a0/0x1a4 [ 54.408121][ T4838] loop0: detected capacity change from 0 to 32768 [ 54.411335][ T4838] BTRFS: device fsid c9fe44da-de57-406a-8241-57ec7d4412cf devid 1 transid 8 /dev/loop0 scanned by syz-executor.0 (4838) [ 54.414577][ T4838] BTRFS info (device loop0): using crc32c (crc32c-generic) checksum algorithm [ 54.416251][ T4838] BTRFS info (device loop0): setting nodatacow, compression disabled [ 54.417757][ T4838] BTRFS warning (device loop0): 'usebackuproot' is deprecated, use 'rescue=usebackuproot' instead [ 54.420110][ T4838] BTRFS info (device loop0): trying to use backup root at mount time [ 54.421663][ T4838] BTRFS info (device loop0): metadata ratio 1564 [ 54.422921][ T4838] BTRFS info (device loop0): doing ref verification [ 54.424194][ T4838] BTRFS info (device loop0): force zlib compression, level 3 [ 54.425612][ T4838] BTRFS info (device loop0): turning on flush-on-commit [ 54.426928][ T4838] BTRFS info (device loop0): using free space tree [ 54.428213][ T4838] BTRFS info (device loop0): has skinny extents [ 54.441119][ T4838] BTRFS info (device loop0): enabling ssd optimizations [ 54.446067][ T4838] FAULT_INJECTION: forcing a failure. [ 54.446067][ T4838] name failslab, interval 1, probability 0, space 0, times 0 [ 54.448649][ T4838] CPU: 1 PID: 4838 Comm: syz-executor.0 Tainted: G W syzkaller #0 [ 54.450343][ T4838] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/18/2026 [ 54.452297][ T4838] Call trace: [ 54.452948][ T4838] dump_backtrace+0x0/0x458 [ 54.453846][ T4838] show_stack+0x2c/0x3c [ 54.454660][ T4838] __dump_stack+0x30/0x40 [ 54.455495][ T4838] dump_stack_lvl+0xf4/0x15c [ 54.456372][ T4838] dump_stack+0x1c/0x5c [ 54.457164][ T4838] should_fail+0x3bc/0x514 [ 54.458037][ T4838] __should_failslab+0xbc/0x10c [ 54.458987][ T4838] should_failslab+0x10/0x28 [ 54.459890][ T4838] slab_pre_alloc_hook+0x64/0xe8 [ 54.460828][ T4838] kmem_cache_alloc+0x94/0x3d4 [ 54.461800][ T4838] btrfs_insert_item+0xd0/0x2b8 [ 54.462793][ T4838] btrfs_insert_root+0xa4/0x14c [ 54.463754][ T4838] btrfs_sync_log+0xb34/0x1f5c [ 54.464940][ T4838] btrfs_sync_file+0x9c0/0xebc [ 54.466285][ T4838] vfs_fsync_range+0x168/0x188 [ 54.467225][ T4838] btrfs_file_write_iter+0xa70/0xbb8 [ 54.468283][ T4838] vfs_write+0x590/0xa60 [ 54.469116][ T4838] ksys_write+0x12c/0x224 [ 54.469946][ T4838] __arm64_sys_write+0x7c/0x90 [ 54.470891][ T4838] invoke_syscall+0x98/0x2b0 [ 54.471738][ T4838] el0_svc_common+0x138/0x258 [ 54.472619][ T4838] do_el0_svc+0x58/0x13c [ 54.473474][ T4838] el0_svc+0x78/0x1d0 [ 54.474226][ T4838] el0t_64_sync_handler+0xcc/0xe4 [ 54.475187][ T4838] el0t_64_sync+0x1a0/0x1a4 [ 54.476354][ T4838] ------------[ cut here ]------------ [ 54.477422][ T4838] WARNING: CPU: 1 PID: 4838 at fs/btrfs/tree-log.c:3224 btrfs_sync_log+0x1438/0x1f5c [ 54.479157][ T4838] Modules linked in: [ 54.479889][ T4838] CPU: 1 PID: 4838 Comm: syz-executor.0 Tainted: G W syzkaller #0 [ 54.481700][ T4838] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/18/2026 [ 54.483694][ T4838] pstate: 62400005 (nZCv daif +PAN -UAO +TCO -DIT -SSBS BTYPE=--) [ 54.485215][ T4838] pc : btrfs_sync_log+0x1438/0x1f5c [ 54.486243][ T4838] lr : btrfs_sync_log+0x1438/0x1f5c [ 54.487303][ T4838] sp : ffff80001f7673e0 [ 54.488115][ T4838] x29: ffff80001f7677e0 x28: 1fffe0001bc3b308 x27: ffff0000de1d9898 [ 54.489702][ T4838] x26: dfff800000000000 x25: ffff0000de1d9840 x24: 00000000fffffff4 [ 54.491345][ T4838] x23: ffff0000d9570000 x22: ffff0000d5cf44e0 x21: 0000000000000000 [ 54.492994][ T4838] x20: ffff0000d9c5e000 x19: 0000000000000009 x18: 0000000000000001 [ 54.494639][ T4838] x17: 0000000000000000 x16: ffff800008304c04 x15: 00000000ffffffff [ 54.496191][ T4838] x14: 0000000000000001 x13: 1ffff00003eecd9c x12: 0000000000ff0100 [ 54.497838][ T4838] x11: 0000000000000000 x10: 0000000000000000 x9 : 59e38a5c9e6f0e00 [ 54.499470][ T4838] x8 : 59e38a5c9e6f0e00 x7 : 0000000000000001 x6 : 0000000000000001 [ 54.501082][ T4838] x5 : ffff80001f766cf8 x4 : ffff80001437f3e0 x3 : ffff800008304d14 [ 54.502624][ T4838] x2 : 0000000000000001 x1 : 0000000100000000 x0 : 0000000000000026 [ 54.504185][ T4838] Call trace: [ 54.504833][ T4838] btrfs_sync_log+0x1438/0x1f5c [ 54.505788][ T4838] btrfs_sync_file+0x9c0/0xebc [ 54.506722][ T4838] vfs_fsync_range+0x168/0x188 [ 54.507625][ T4838] btrfs_file_write_iter+0xa70/0xbb8 [ 54.508714][ T4838] vfs_write+0x590/0xa60 [ 54.509587][ T4838] ksys_write+0x12c/0x224 [ 54.510427][ T4838] __arm64_sys_write+0x7c/0x90 [ 54.511411][ T4838] invoke_syscall+0x98/0x2b0 [ 54.512347][ T4838] el0_svc_common+0x138/0x258 [ 54.513310][ T4838] do_el0_svc+0x58/0x13c [ 54.514152][ T4838] el0_svc+0x78/0x1d0 [ 54.514927][ T4838] el0t_64_sync_handler+0xcc/0xe4 [ 54.515946][ T4838] el0t_64_sync+0x1a0/0x1a4 [ 54.516885][ T4838] irq event stamp: 78686 [ 54.517759][ T4838] hardirqs last enabled at (78685): [] __up_console_sem+0xb4/0xfc [ 54.519592][ T4838] hardirqs last disabled at (78686): [] el1_dbg+0x24/0x80 [ 54.521320][ T4838] softirqs last enabled at (78660): [] handle_softirqs+0xa40/0xbe4 [ 54.523257][ T4838] softirqs last disabled at (78645): [] __irq_exit_rcu+0x240/0x43c [ 54.525101][ T4838] ---[ end trace 97398f66ba0e41a9 ]--- [ 54.526744][ T4838] BTRFS: error (device loop0) in btrfs_sync_log:3224: errno=-12 Out of memory [ 54.528394][ T4838] BTRFS info (device loop0): forced readonly [ 54.658972][ T4725] Bluetooth: hci0: command 0x041b tx timeout [ 54.732229][ T4859] loop0: detected capacity change from 0 to 32768 [ 54.737269][ T4859] BTRFS: device fsid c9fe44da-de57-406a-8241-57ec7d4412cf devid 1 transid 8 /dev/loop0 scanned by syz-executor.0 (4859) [ 54.744958][ T4859] BTRFS info (device loop0): using crc32c (crc32c-generic) checksum algorithm [ 54.746787][ T4859] BTRFS info (device loop0): setting nodatacow, compression disabled [ 54.748288][ T4859] BTRFS warning (device loop0): 'usebackuproot' is deprecated, use 'rescue=usebackuproot' instead [ 54.750761][ T4859] BTRFS info (device loop0): trying to use backup root at mount time [ 54.752347][ T4859] BTRFS info (device loop0): metadata ratio 1564 [ 54.753540][ T4859] BTRFS info (device loop0): doing ref verification [ 54.754841][ T4859] BTRFS info (device loop0): force zlib compression, level 3 [ 54.771467][ T4859] FAULT_INJECTION: forcing a failure. [ 54.771467][ T4859] name fail_page_alloc, interval 1, probability 0, space 0, times 1 [ 54.774059][ T4859] CPU: 1 PID: 4859 Comm: syz-executor.0 Tainted: G W syzkaller #0 [ 54.775822][ T4859] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/18/2026 [ 54.777867][ T4859] Call trace: [ 54.778518][ T4859] dump_backtrace+0x0/0x458 [ 54.779477][ T4859] show_stack+0x2c/0x3c [ 54.780320][ T4859] __dump_stack+0x30/0x40 [ 54.781262][ T4859] dump_stack_lvl+0xf4/0x15c [ 54.782161][ T4859] dump_stack+0x1c/0x5c [ 54.783019][ T4859] should_fail+0x3bc/0x514 [ 54.783926][ T4859] should_fail_alloc_page+0x74/0xa8 [ 54.784979][ T4859] prepare_alloc_pages+0x160/0x45c [ 54.785982][ T4859] __alloc_pages+0x108/0x470 [ 54.786866][ T4859] alloc_pages+0x34c/0x5c0 [ 54.787682][ T4859] new_slab+0xe0/0x544 [ 54.788510][ T4859] ___slab_alloc+0x6b4/0xd8c [ 54.789434][ T4859] __slab_alloc+0x68/0xc0 [ 54.790297][ T4859] kmem_cache_alloc+0x2a4/0x3d4 [ 54.791267][ T4859] mempool_alloc_slab+0x58/0x74 [ 54.792290][ T4859] mempool_alloc+0x144/0x3f0 [ 54.793136][ T4859] bio_alloc_bioset+0x1dc/0x718 [ 54.794071][ T4859] submit_extent_page+0x424/0x11d4 [ 54.795054][ T4859] write_one_eb+0x1bc/0x55c [ 54.795923][ T4859] btree_write_cache_pages+0xef4/0x149c [ 54.797031][ T4859] btree_writepages+0x6c/0x190 [ 54.798002][ T4859] do_writepages+0x364/0x584 [ 54.798932][ T4859] filemap_fdatawrite_wbc+0x1d4/0x234 [ 54.800008][ T4859] filemap_fdatawrite_range+0xc0/0x114 [ 54.801099][ T4859] btrfs_write_marked_extents+0x1bc/0x364 [ 54.802239][ T4859] btrfs_sync_log+0x764/0x1f5c [ 54.803179][ T4859] btrfs_sync_file+0x9c0/0xebc [ 54.804130][ T4859] vfs_fsync_range+0x168/0x188 [ 54.805076][ T4859] btrfs_file_write_iter+0xa70/0xbb8 [ 54.806060][ T4859] vfs_write+0x590/0xa60 [ 54.806846][ T4859] ksys_write+0x12c/0x224 [ 54.807626][ T4859] __arm64_sys_write+0x7c/0x90 [ 54.808492][ T4859] invoke_syscall+0x98/0x2b0 [ 54.809387][ T4859] el0_svc_common+0x138/0x258 [ 54.810318][ T4859] do_el0_svc+0x58/0x13c [ 54.811111][ T4859] el0_svc+0x78/0x1d0 [ 54.811879][ T4859] el0t_64_sync_handler+0xcc/0xe4 [ 54.812865][ T4859] el0t_64_sync+0x1a0/0x1a4 [ 54.981846][ T4880] BTRFS: device fsid c9fe44da-de57-406a-8241-57ec7d4412cf devid 1 transid 8 /dev/loop0 scanned by syz-executor.0 (4880) [ 54.985415][ T4880] BTRFS warning (device loop0): 'usebackuproot' is deprecated, use 'rescue=usebackuproot' instead [ 55.001437][ T4880] FAULT_INJECTION: forcing a failure. [ 55.001437][ T4880] name failslab, interval 1, probability 0, space 0, times 0 [ 55.004076][ T4880] CPU: 1 PID: 4880 Comm: syz-executor.0 Tainted: G W syzkaller #0 [ 55.005783][ T4880] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/18/2026 [ 55.007741][ T4880] Call trace: [ 55.008350][ T4880] dump_backtrace+0x0/0x458 [ 55.009201][ T4880] show_stack+0x2c/0x3c [ 55.009997][ T4880] __dump_stack+0x30/0x40 [ 55.010810][ T4880] dump_stack_lvl+0xf4/0x15c [ 55.011665][ T4880] dump_stack+0x1c/0x5c [ 55.012460][ T4880] should_fail+0x3bc/0x514 [ 55.013322][ T4880] __should_failslab+0xbc/0x10c [ 55.014147][ T4880] should_failslab+0x10/0x28 [ 55.015038][ T4880] slab_pre_alloc_hook+0x64/0xe8 [ 55.015973][ T4880] kmem_cache_alloc+0x94/0x3d4 [ 55.016869][ T4880] alloc_extent_state+0x38/0x42c [ 55.017843][ T4880] convert_extent_bit+0x17c/0x16ec [ 55.018796][ T4880] btrfs_write_marked_extents+0x178/0x364 [ 55.019808][ T4880] btrfs_sync_log+0x12f8/0x1f5c [ 55.020672][ T4880] btrfs_sync_file+0x9c0/0xebc [ 55.021549][ T4880] vfs_fsync_range+0x168/0x188 [ 55.022483][ T4880] btrfs_file_write_iter+0xa70/0xbb8 [ 55.023513][ T4880] vfs_write+0x590/0xa60 [ 55.024337][ T4880] ksys_write+0x12c/0x224 [ 55.025165][ T4880] __arm64_sys_write+0x7c/0x90 [ 55.026122][ T4880] invoke_syscall+0x98/0x2b0 [ 55.027041][ T4880] el0_svc_common+0x138/0x258 [ 55.027987][ T4880] do_el0_svc+0x58/0x13c [ 55.028767][ T4880] el0_svc+0x78/0x1d0 [ 55.029522][ T4880] el0t_64_sync_handler+0xcc/0xe4 [ 55.030451][ T4880] el0t_64_sync+0x1a0/0x1a4 [ 55.190502][ T4901] BTRFS: device fsid c9fe44da-de57-406a-8241-57ec7d4412cf devid 1 transid 8 /dev/loop0 scanned by syz-executor.0 (4901) [ 55.200158][ T4901] BTRFS warning (device loop0): 'usebackuproot' is deprecated, use 'rescue=usebackuproot' instead [ 55.225036][ T4901] FAULT_INJECTION: forcing a failure. [ 55.225036][ T4901] name failslab, interval 1, probability 0, space 0, times 0 [ 55.227357][ T4901] CPU: 0 PID: 4901 Comm: syz-executor.0 Tainted: G W syzkaller #0 [ 55.228953][ T4901] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/18/2026 [ 55.230882][ T4901] Call trace: [ 55.231492][ T4901] dump_backtrace+0x0/0x458 [ 55.232352][ T4901] show_stack+0x2c/0x3c [ 55.233095][ T4901] __dump_stack+0x30/0x40 [ 55.233904][ T4901] dump_stack_lvl+0xf4/0x15c [ 55.234819][ T4901] dump_stack+0x1c/0x5c [ 55.235622][ T4901] should_fail+0x3bc/0x514 [ 55.236474][ T4901] __should_failslab+0xbc/0x10c [ 55.237371][ T4901] should_failslab+0x10/0x28 [ 55.238250][ T4901] slab_pre_alloc_hook+0x64/0xe8 [ 55.239165][ T4901] kmem_cache_alloc+0x94/0x3d4 [ 55.240046][ T4901] mempool_alloc_slab+0x58/0x74 [ 55.240997][ T4901] mempool_alloc+0x144/0x3f0 [ 55.241902][ T4901] bio_alloc_bioset+0x118/0x718 [ 55.242827][ T4901] submit_extent_page+0x424/0x11d4 [ 55.243845][ T4901] write_one_eb+0x1bc/0x55c [ 55.244734][ T4901] btree_write_cache_pages+0xef4/0x149c [ 55.245700][ T4901] btree_writepages+0x6c/0x190 [ 55.246543][ T4901] do_writepages+0x364/0x584 [ 55.247322][ T4901] filemap_fdatawrite_wbc+0x1d4/0x234 [ 55.248241][ T4901] filemap_fdatawrite_range+0xc0/0x114 [ 55.249176][ T4901] btrfs_write_marked_extents+0x1bc/0x364 [ 55.250107][ T4901] btrfs_sync_log+0x12f8/0x1f5c [ 55.250983][ T4901] btrfs_sync_file+0x9c0/0xebc [ 55.251898][ T4901] vfs_fsync_range+0x168/0x188 [ 55.252837][ T4901] btrfs_file_write_iter+0xa70/0xbb8 [ 55.253843][ T4901] vfs_write+0x590/0xa60 [ 55.254621][ T4901] ksys_write+0x12c/0x224 [ 55.255464][ T4901] __arm64_sys_write+0x7c/0x90 [ 55.256330][ T4901] invoke_syscall+0x98/0x2b0 [ 55.257188][ T4901] el0_svc_common+0x138/0x258 [ 55.258086][ T4901] do_el0_svc+0x58/0x13c [ 55.258914][ T4901] el0_svc+0x78/0x1d0 [ 55.259682][ T4901] el0t_64_sync_handler+0xcc/0xe4 [ 55.260563][ T4901] el0t_64_sync+0x1a0/0x1a4 [ 55.442182][ T4922] BTRFS: device fsid c9fe44da-de57-406a-8241-57ec7d4412cf devid 1 transid 8 /dev/loop0 scanned by syz-executor.0 (4922) [ 55.447540][ T4922] BTRFS warning (device loop0): 'usebackuproot' is deprecated, use 'rescue=usebackuproot' instead [ 55.469631][ T4922] FAULT_INJECTION: forcing a failure. [ 55.469631][ T4922] name failslab, interval 1, probability 0, space 0, times 0 [ 55.472293][ T4922] CPU: 1 PID: 4922 Comm: syz-executor.0 Tainted: G W syzkaller #0 [ 55.473998][ T4922] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/18/2026 [ 55.475885][ T4922] Call trace: [ 55.476506][ T4922] dump_backtrace+0x0/0x458 [ 55.477359][ T4922] show_stack+0x2c/0x3c [ 55.478188][ T4922] __dump_stack+0x30/0x40 [ 55.479055][ T4922] dump_stack_lvl+0xf4/0x15c [ 55.479950][ T4922] dump_stack+0x1c/0x5c [ 55.480757][ T4922] should_fail+0x3bc/0x514 [ 55.481616][ T4922] __should_failslab+0xbc/0x10c [ 55.482578][ T4922] should_failslab+0x10/0x28 [ 55.483447][ T4922] slab_pre_alloc_hook+0x64/0xe8 [ 55.484404][ T4922] kmem_cache_alloc+0x94/0x3d4 [ 55.485326][ T4922] mempool_alloc_slab+0x58/0x74 [ 55.486288][ T4922] mempool_alloc+0x144/0x3f0 [ 55.487200][ T4922] bio_alloc_bioset+0x118/0x718 [ 55.488155][ T4922] submit_extent_page+0x424/0x11d4 [ 55.489223][ T4922] write_one_eb+0x1bc/0x55c [ 55.490160][ T4922] btree_write_cache_pages+0xef4/0x149c [ 55.491234][ T4922] btree_writepages+0x6c/0x190 [ 55.492220][ T4922] do_writepages+0x364/0x584 [ 55.493146][ T4922] filemap_fdatawrite_wbc+0x1d4/0x234 [ 55.494267][ T4922] filemap_fdatawrite_range+0xc0/0x114 [ 55.495412][ T4922] btrfs_write_marked_extents+0x1bc/0x364 [ 55.496575][ T4922] btrfs_sync_log+0x764/0x1f5c [ 55.497555][ T4922] btrfs_sync_file+0x9c0/0xebc [ 55.498462][ T4922] vfs_fsync_range+0x168/0x188 [ 55.499360][ T4922] btrfs_file_write_iter+0xa70/0xbb8 [ 55.500372][ T4922] vfs_write+0x590/0xa60 [ 55.501153][ T4922] ksys_write+0x12c/0x224 [ 55.502039][ T4922] __arm64_sys_write+0x7c/0x90 [ 55.502966][ T4922] invoke_syscall+0x98/0x2b0 [ 55.503872][ T4922] el0_svc_common+0x138/0x258 [ 55.504789][ T4922] do_el0_svc+0x58/0x13c [ 55.505680][ T4922] el0_svc+0x78/0x1d0 [ 55.506541][ T4922] el0t_64_sync_handler+0xcc/0xe4 [ 55.507540][ T4922] el0t_64_sync+0x1a0/0x1a4 1970/01/01 00:00:55 executed programs: 13 [ 55.712264][ T4943] BTRFS: device fsid c9fe44da-de57-406a-8241-57ec7d4412cf devid 1 transid 8 /dev/loop0 scanned by syz-executor.0 (4943) [ 55.715615][ T4943] BTRFS warning (device loop0): 'usebackuproot' is deprecated, use 'rescue=usebackuproot' instead [ 55.733286][ T4943] FAULT_INJECTION: forcing a failure. [ 55.733286][ T4943] name failslab, interval 1, probability 0, space 0, times 0 [ 55.735731][ T4943] CPU: 0 PID: 4943 Comm: syz-executor.0 Tainted: G W syzkaller #0 [ 55.737372][ T4943] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/18/2026 [ 55.739149][ T4943] Call trace: [ 55.739788][ T4943] dump_backtrace+0x0/0x458 [ 55.740624][ T4943] show_stack+0x2c/0x3c [ 55.741438][ T4943] __dump_stack+0x30/0x40 [ 55.742288][ T4943] dump_stack_lvl+0xf4/0x15c [ 55.743147][ T4943] dump_stack+0x1c/0x5c [ 55.743971][ T4943] should_fail+0x3bc/0x514 [ 55.744763][ T4943] __should_failslab+0xbc/0x10c [ 55.745758][ T4943] should_failslab+0x10/0x28 [ 55.746642][ T4943] slab_pre_alloc_hook+0x64/0xe8 [ 55.747570][ T4943] kmem_cache_alloc+0x94/0x3d4 [ 55.748440][ T4943] btrfs_insert_item+0xd0/0x2b8 [ 55.749346][ T4943] btrfs_insert_root+0xa4/0x14c [ 55.750256][ T4943] btrfs_sync_log+0xb34/0x1f5c [ 55.751137][ T4943] btrfs_sync_file+0x9c0/0xebc [ 55.752018][ T4943] vfs_fsync_range+0x168/0x188 [ 55.752911][ T4943] btrfs_file_write_iter+0xa70/0xbb8 [ 55.753910][ T4943] vfs_write+0x590/0xa60 [ 55.754718][ T4943] ksys_write+0x12c/0x224 [ 55.755489][ T4943] __arm64_sys_write+0x7c/0x90 [ 55.756358][ T4943] invoke_syscall+0x98/0x2b0 [ 55.757157][ T4943] el0_svc_common+0x138/0x258 [ 55.758019][ T4943] do_el0_svc+0x58/0x13c [ 55.758825][ T4943] el0_svc+0x78/0x1d0 [ 55.759586][ T4943] el0t_64_sync_handler+0xcc/0xe4 [ 55.760546][ T4943] el0t_64_sync+0x1a0/0x1a4 [ 55.761794][ T4943] ------------[ cut here ]------------ [ 55.763313][ T4943] WARNING: CPU: 0 PID: 4943 at fs/btrfs/tree-log.c:3224 btrfs_sync_log+0x1438/0x1f5c [ 55.764997][ T4943] Modules linked in: [ 55.765742][ T4943] CPU: 0 PID: 4943 Comm: syz-executor.0 Tainted: G W syzkaller #0 [ 55.767422][ T4943] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/18/2026 [ 55.769264][ T4943] pstate: 62400005 (nZCv daif +PAN -UAO +TCO -DIT -SSBS BTYPE=--) [ 55.770703][ T4943] pc : btrfs_sync_log+0x1438/0x1f5c [ 55.771654][ T4943] lr : btrfs_sync_log+0x1438/0x1f5c [ 55.772581][ T4943] sp : ffff80001fe173e0 [ 55.773348][ T4943] x29: ffff80001fe177e0 x28: 1fffe0001b8f849a x27: ffff0000dc7c2528 [ 55.774828][ T4943] x26: dfff800000000000 x25: ffff0000dc7c24d0 x24: 00000000fffffff4 [ 55.776399][ T4943] x23: ffff0000dd728000 x22: ffff0000dc3504e0 x21: 0000000000000000 [ 55.777950][ T4943] x20: ffff0000c8a28000 x19: 0000000000000009 x18: 0000000000000001 [ 55.779479][ T4943] x17: 0000000000000000 x16: ffff80001125f22c x15: 00000000ffffffff [ 55.780977][ T4943] x14: 0000000000000001 x13: 1fffe000341f05ab x12: 0000000000ff0100 [ 55.782497][ T4943] x11: 0000000000000000 x10: 0000000000000000 x9 : 625e44dbd4f99e00 [ 55.783994][ T4943] x8 : 625e44dbd4f99e00 x7 : 0000000000000001 x6 : 0000000000000001 [ 55.785474][ T4943] x5 : ffff80001fe16cf8 x4 : ffff80001437f3e0 x3 : ffff80000850932c [ 55.786890][ T4943] x2 : 0000000000000001 x1 : 0000000100000000 x0 : 0000000000000026 [ 55.788326][ T4943] Call trace: [ 55.788919][ T4943] btrfs_sync_log+0x1438/0x1f5c [ 55.789817][ T4943] btrfs_sync_file+0x9c0/0xebc [ 55.790730][ T4943] vfs_fsync_range+0x168/0x188 [ 55.791611][ T4943] btrfs_file_write_iter+0xa70/0xbb8 [ 55.792569][ T4943] vfs_write+0x590/0xa60 [ 55.793341][ T4943] ksys_write+0x12c/0x224 [ 55.794153][ T4943] __arm64_sys_write+0x7c/0x90 [ 55.795060][ T4943] invoke_syscall+0x98/0x2b0 [ 55.795950][ T4943] el0_svc_common+0x138/0x258 [ 55.796865][ T4943] do_el0_svc+0x58/0x13c [ 55.797716][ T4943] el0_svc+0x78/0x1d0 [ 55.798496][ T4943] el0t_64_sync_handler+0xcc/0xe4 [ 55.799476][ T4943] el0t_64_sync+0x1a0/0x1a4 [ 55.800340][ T4943] irq event stamp: 79284 [ 55.801141][ T4943] hardirqs last enabled at (79283): [] __up_console_sem+0xb4/0xfc [ 55.802945][ T4943] hardirqs last disabled at (79284): [] el1_dbg+0x24/0x80 [ 55.804593][ T4943] softirqs last enabled at (79246): [] handle_softirqs+0xa40/0xbe4 [ 55.806420][ T4943] softirqs last disabled at (79225): [] __irq_exit_rcu+0x240/0x43c [ 55.808295][ T4943] ---[ end trace 97398f66ba0e41aa ]--- [ 55.810250][ T4943] BTRFS: error (device loop0) in btrfs_sync_log:3224: errno=-12 Out of memory [ 55.982460][ T4964] BTRFS: device fsid c9fe44da-de57-406a-8241-57ec7d4412cf devid 1 transid 8 /dev/loop0 scanned by syz-executor.0 (4964) [ 55.986047][ T4964] BTRFS warning (device loop0): 'usebackuproot' is deprecated, use 'rescue=usebackuproot' instead [ 56.013529][ T4964] FAULT_INJECTION: forcing a failure. [ 56.013529][ T4964] name failslab, interval 1, probability 0, space 0, times 0 [ 56.015928][ T4964] CPU: 1 PID: 4964 Comm: syz-executor.0 Tainted: G W syzkaller #0 [ 56.017600][ T4964] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/18/2026 [ 56.019536][ T4964] Call trace: [ 56.020181][ T4964] dump_backtrace+0x0/0x458 [ 56.021108][ T4964] show_stack+0x2c/0x3c [ 56.021902][ T4964] __dump_stack+0x30/0x40 [ 56.022822][ T4964] dump_stack_lvl+0xf4/0x15c [ 56.023737][ T4964] dump_stack+0x1c/0x5c [ 56.024547][ T4964] should_fail+0x3bc/0x514 [ 56.025432][ T4964] __should_failslab+0xbc/0x10c [ 56.026403][ T4964] should_failslab+0x10/0x28 [ 56.027337][ T4964] slab_pre_alloc_hook+0x64/0xe8 [ 56.028347][ T4964] kmem_cache_alloc+0x94/0x3d4 [ 56.029313][ T4964] alloc_extent_state+0x38/0x42c [ 56.030338][ T4964] convert_extent_bit+0x17c/0x16ec [ 56.031390][ T4964] btrfs_write_marked_extents+0x178/0x364 [ 56.032538][ T4964] btrfs_sync_log+0x12f8/0x1f5c [ 56.033484][ T4964] btrfs_sync_file+0x9c0/0xebc [ 56.034395][ T4964] vfs_fsync_range+0x168/0x188 [ 56.035290][ T4964] btrfs_file_write_iter+0xa70/0xbb8 [ 56.036273][ T4964] vfs_write+0x590/0xa60 [ 56.037042][ T4964] ksys_write+0x12c/0x224 [ 56.037914][ T4964] __arm64_sys_write+0x7c/0x90 [ 56.038792][ T4964] invoke_syscall+0x98/0x2b0 [ 56.039673][ T4964] el0_svc_common+0x138/0x258 [ 56.040545][ T4964] do_el0_svc+0x58/0x13c [ 56.041349][ T4964] el0_svc+0x78/0x1d0 [ 56.042076][ T4964] el0t_64_sync_handler+0xcc/0xe4 [ 56.042962][ T4964] el0t_64_sync+0x1a0/0x1a4 [ 56.222524][ T4985] BTRFS: device fsid c9fe44da-de57-406a-8241-57ec7d4412cf devid 1 transid 8 /dev/loop0 scanned by syz-executor.0 (4985) [ 56.227571][ T4985] BTRFS warning (device loop0): 'usebackuproot' is deprecated, use 'rescue=usebackuproot' instead [ 56.240721][ T4985] FAULT_INJECTION: forcing a failure. [ 56.240721][ T4985] name failslab, interval 1, probability 0, space 0, times 0 [ 56.243385][ T4985] CPU: 1 PID: 4985 Comm: syz-executor.0 Tainted: G W syzkaller #0 [ 56.244978][ T4985] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/18/2026 [ 56.247004][ T4985] Call trace: [ 56.247700][ T4985] dump_backtrace+0x0/0x458 [ 56.248625][ T4985] show_stack+0x2c/0x3c [ 56.249466][ T4985] __dump_stack+0x30/0x40 [ 56.250313][ T4985] dump_stack_lvl+0xf4/0x15c [ 56.251192][ T4985] dump_stack+0x1c/0x5c [ 56.251997][ T4985] should_fail+0x3bc/0x514 [ 56.252815][ T4985] __should_failslab+0xbc/0x10c [ 56.253719][ T4985] should_failslab+0x10/0x28 [ 56.254610][ T4985] slab_pre_alloc_hook+0x64/0xe8 [ 56.255521][ T4985] kmem_cache_alloc+0x94/0x3d4 [ 56.256409][ T4985] btrfs_insert_item+0xd0/0x2b8 [ 56.257346][ T4985] btrfs_insert_root+0xa4/0x14c [ 56.258279][ T4985] btrfs_sync_log+0xb34/0x1f5c [ 56.259172][ T4985] btrfs_sync_file+0x9c0/0xebc [ 56.260136][ T4985] vfs_fsync_range+0x168/0x188 [ 56.261065][ T4985] btrfs_file_write_iter+0xa70/0xbb8 [ 56.262050][ T4985] vfs_write+0x590/0xa60 [ 56.262813][ T4985] ksys_write+0x12c/0x224 [ 56.263684][ T4985] __arm64_sys_write+0x7c/0x90 [ 56.264627][ T4985] invoke_syscall+0x98/0x2b0 [ 56.265559][ T4985] el0_svc_common+0x138/0x258 [ 56.266515][ T4985] do_el0_svc+0x58/0x13c [ 56.267364][ T4985] el0_svc+0x78/0x1d0 [ 56.268160][ T4985] el0t_64_sync_handler+0xcc/0xe4 [ 56.269139][ T4985] el0t_64_sync+0x1a0/0x1a4 [ 56.270678][ T4985] ------------[ cut here ]------------ [ 56.271781][ T4985] WARNING: CPU: 1 PID: 4985 at fs/btrfs/tree-log.c:3224 btrfs_sync_log+0x1438/0x1f5c [ 56.273513][ T4985] Modules linked in: [ 56.274277][ T4985] CPU: 1 PID: 4985 Comm: syz-executor.0 Tainted: G W syzkaller #0 [ 56.276062][ T4985] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/18/2026 [ 56.278048][ T4985] pstate: 62400005 (nZCv daif +PAN -UAO +TCO -DIT -SSBS BTYPE=--) [ 56.279605][ T4985] pc : btrfs_sync_log+0x1438/0x1f5c [ 56.280599][ T4985] lr : btrfs_sync_log+0x1438/0x1f5c [ 56.281588][ T4985] sp : ffff8000202073e0 [ 56.282350][ T4985] x29: ffff8000202077e0 x28: 1fffe0001bc078dc x27: ffff0000de03c738 [ 56.283824][ T4985] x26: dfff800000000000 x25: ffff0000de03c6e0 x24: 00000000fffffff4 [ 56.285315][ T4985] x23: ffff0000e52ae000 x22: ffff0000daa304e0 x21: 0000000000000000 [ 56.286862][ T4985] x20: ffff0000d4206000 x19: 0000000000000009 x18: 0000000000000001 [ 56.288524][ T4985] x17: 0000000000000000 x16: ffff80001125f22c x15: 00000000ffffffff [ 56.290123][ T4985] x14: 0000000000000001 x13: 1fffe000341f47ab x12: 0000000000ff0100 [ 56.291661][ T4985] x11: 0000000000000000 x10: 0000000000000000 x9 : 0e62c8cbbc76bb00 [ 56.293206][ T4985] x8 : 0e62c8cbbc76bb00 x7 : 0000000000000001 x6 : 0000000000000001 [ 56.294880][ T4985] x5 : ffff800020206cf8 x4 : ffff80001437f3e0 x3 : ffff80000850932c [ 56.296546][ T4985] x2 : 0000000000000001 x1 : 0000000100000000 x0 : 0000000000000026 [ 56.298205][ T4985] Call trace: [ 56.298881][ T4985] btrfs_sync_log+0x1438/0x1f5c [ 56.299884][ T4985] btrfs_sync_file+0x9c0/0xebc [ 56.300843][ T4985] vfs_fsync_range+0x168/0x188 [ 56.301810][ T4985] btrfs_file_write_iter+0xa70/0xbb8 [ 56.302802][ T4985] vfs_write+0x590/0xa60 [ 56.303604][ T4985] ksys_write+0x12c/0x224 [ 56.304445][ T4985] __arm64_sys_write+0x7c/0x90 [ 56.305433][ T4985] invoke_syscall+0x98/0x2b0 [ 56.306359][ T4985] el0_svc_common+0x138/0x258 [ 56.307264][ T4985] do_el0_svc+0x58/0x13c [ 56.308079][ T4985] el0_svc+0x78/0x1d0 [ 56.308838][ T4985] el0t_64_sync_handler+0xcc/0xe4 [ 56.309817][ T4985] el0t_64_sync+0x1a0/0x1a4 [ 56.310689][ T4985] irq event stamp: 79462 [ 56.311474][ T4985] hardirqs last enabled at (79461): [] __up_console_sem+0xb4/0xfc [ 56.313251][ T4985] hardirqs last disabled at (79462): [] el1_dbg+0x24/0x80 [ 56.314951][ T4985] softirqs last enabled at (79428): [] handle_softirqs+0xa40/0xbe4 [ 56.316767][ T4985] softirqs last disabled at (79385): [] __irq_exit_rcu+0x240/0x43c [ 56.318595][ T4985] ---[ end trace 97398f66ba0e41ab ]--- [ 56.320285][ T4985] BTRFS: error (device loop0) in btrfs_sync_log:3224: errno=-12 Out of memory [ 56.492703][ T5006] BTRFS: device fsid c9fe44da-de57-406a-8241-57ec7d4412cf devid 1 transid 8 /dev/loop0 scanned by syz-executor.0 (5006) [ 56.496531][ T5006] BTRFS warning (device loop0): 'usebackuproot' is deprecated, use 'rescue=usebackuproot' instead [ 56.509900][ T5006] FAULT_INJECTION: forcing a failure. [ 56.509900][ T5006] name failslab, interval 1, probability 0, space 0, times 0 [ 56.512228][ T5006] CPU: 1 PID: 5006 Comm: syz-executor.0 Tainted: G W syzkaller #0 [ 56.513867][ T5006] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/18/2026 [ 56.515725][ T5006] Call trace: [ 56.516290][ T5006] dump_backtrace+0x0/0x458 [ 56.517083][ T5006] show_stack+0x2c/0x3c [ 56.517827][ T5006] __dump_stack+0x30/0x40 [ 56.518628][ T5006] dump_stack_lvl+0xf4/0x15c [ 56.519517][ T5006] dump_stack+0x1c/0x5c [ 56.520360][ T5006] should_fail+0x3bc/0x514 [ 56.521192][ T5006] __should_failslab+0xbc/0x10c [ 56.522133][ T5006] should_failslab+0x10/0x28 [ 56.522986][ T5006] slab_pre_alloc_hook+0x64/0xe8 [ 56.523943][ T5006] kmem_cache_alloc+0x94/0x3d4 [ 56.524914][ T5006] alloc_extent_state+0x38/0x42c [ 56.525896][ T5006] convert_extent_bit+0x17c/0x16ec [ 56.526916][ T5006] btrfs_write_marked_extents+0x178/0x364 [ 56.528041][ T5006] btrfs_sync_log+0x12f8/0x1f5c [ 56.528992][ T5006] btrfs_sync_file+0x9c0/0xebc [ 56.529922][ T5006] vfs_fsync_range+0x168/0x188 [ 56.530894][ T5006] btrfs_file_write_iter+0xa70/0xbb8 [ 56.531979][ T5006] vfs_write+0x590/0xa60 [ 56.532781][ T5006] ksys_write+0x12c/0x224 [ 56.533633][ T5006] __arm64_sys_write+0x7c/0x90 [ 56.534578][ T5006] invoke_syscall+0x98/0x2b0 [ 56.535506][ T5006] el0_svc_common+0x138/0x258 [ 56.536456][ T5006] do_el0_svc+0x58/0x13c [ 56.537301][ T5006] el0_svc+0x78/0x1d0 [ 56.538093][ T5006] el0t_64_sync_handler+0xcc/0xe4 [ 56.539043][ T5006] el0t_64_sync+0x1a0/0x1a4 [ 56.728611][ T4478] Bluetooth: hci0: command 0x040f tx timeout [ 56.731202][ T5027] BTRFS: device fsid c9fe44da-de57-406a-8241-57ec7d4412cf devid 1 transid 8 /dev/loop0 scanned by syz-executor.0 (5027) [ 56.740175][ T5027] BTRFS warning (device loop0): 'usebackuproot' is deprecated, use 'rescue=usebackuproot' instead [ 56.762067][ T5027] FAULT_INJECTION: forcing a failure. [ 56.762067][ T5027] name failslab, interval 1, probability 0, space 0, times 0 [ 56.764315][ T5027] CPU: 0 PID: 5027 Comm: syz-executor.0 Tainted: G W syzkaller #0 [ 56.765938][ T5027] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/18/2026 [ 56.767773][ T5027] Call trace: [ 56.768330][ T5027] dump_backtrace+0x0/0x458 [ 56.769215][ T5027] show_stack+0x2c/0x3c [ 56.769994][ T5027] __dump_stack+0x30/0x40 [ 56.770783][ T5027] dump_stack_lvl+0xf4/0x15c [ 56.771633][ T5027] dump_stack+0x1c/0x5c [ 56.772383][ T5027] should_fail+0x3bc/0x514 [ 56.773185][ T5027] __should_failslab+0xbc/0x10c [ 56.774071][ T5027] should_failslab+0x10/0x28 [ 56.774906][ T5027] slab_pre_alloc_hook+0x64/0xe8 [ 56.775812][ T5027] kmem_cache_alloc+0x94/0x3d4 [ 56.776687][ T5027] btrfs_insert_item+0xd0/0x2b8 [ 56.777580][ T5027] btrfs_insert_root+0xa4/0x14c [ 56.778446][ T5027] btrfs_sync_log+0xb34/0x1f5c [ 56.779260][ T5027] btrfs_sync_file+0x9c0/0xebc [ 56.780107][ T5027] vfs_fsync_range+0x168/0x188 [ 56.780967][ T5027] btrfs_file_write_iter+0xa70/0xbb8 [ 56.781923][ T5027] vfs_write+0x590/0xa60 [ 56.782719][ T5027] ksys_write+0x12c/0x224 [ 56.783539][ T5027] __arm64_sys_write+0x7c/0x90 [ 56.784417][ T5027] invoke_syscall+0x98/0x2b0 [ 56.785268][ T5027] el0_svc_common+0x138/0x258 [ 56.786128][ T5027] do_el0_svc+0x58/0x13c [ 56.786935][ T5027] el0_svc+0x78/0x1d0 [ 56.787695][ T5027] el0t_64_sync_handler+0xcc/0xe4 [ 56.788586][ T5027] el0t_64_sync+0x1a0/0x1a4 [ 56.789593][ T5027] ------------[ cut here ]------------ [ 56.791804][ T5027] WARNING: CPU: 0 PID: 5027 at fs/btrfs/tree-log.c:3224 btrfs_sync_log+0x1438/0x1f5c [ 56.793397][ T5027] Modules linked in: [ 56.794027][ T5027] CPU: 0 PID: 5027 Comm: syz-executor.0 Tainted: G W syzkaller #0 [ 56.795569][ T5027] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/18/2026 [ 56.797302][ T5027] pstate: 62400005 (nZCv daif +PAN -UAO +TCO -DIT -SSBS BTYPE=--) [ 56.798687][ T5027] pc : btrfs_sync_log+0x1438/0x1f5c [ 56.799676][ T5027] lr : btrfs_sync_log+0x1438/0x1f5c [ 56.800666][ T5027] sp : ffff8000209373e0 [ 56.801438][ T5027] x29: ffff8000209377e0 x28: 1fffe0001b8f8508 x27: ffff0000dc7c2898 [ 56.802909][ T5027] x26: dfff800000000000 x25: ffff0000dc7c2840 x24: 00000000fffffff4 [ 56.804422][ T5027] x23: ffff0000db540000 x22: ffff0000c97684e0 x21: 0000000000000000 [ 56.805924][ T5027] x20: ffff0000d02e8000 x19: 0000000000000009 x18: 0000000000000001 [ 56.807444][ T5027] x17: 0000000000000000 x16: ffff80001125f22c x15: 00000000ffffffff [ 56.808935][ T5027] x14: 0000000000000001 x13: 1fffe000341f05ab x12: 0000000000ff0100 [ 56.810424][ T5027] x11: 0000000000000000 x10: 0000000000000000 x9 : 494541c6ca6b6100 [ 56.811846][ T5027] x8 : 494541c6ca6b6100 x7 : 0000000000000001 x6 : 0000000000000001 [ 56.813285][ T5027] x5 : ffff800020936cf8 x4 : ffff80001437f3e0 x3 : ffff80000850932c [ 56.814905][ T5027] x2 : 0000000000000001 x1 : 0000000100000000 x0 : 0000000000000026 [ 56.816461][ T5027] Call trace: [ 56.817080][ T5027] btrfs_sync_log+0x1438/0x1f5c [ 56.817995][ T5027] btrfs_sync_file+0x9c0/0xebc [ 56.818886][ T5027] vfs_fsync_range+0x168/0x188 [ 56.819776][ T5027] btrfs_file_write_iter+0xa70/0xbb8 [ 56.820746][ T5027] vfs_write+0x590/0xa60 [ 56.821525][ T5027] ksys_write+0x12c/0x224 [ 56.822342][ T5027] __arm64_sys_write+0x7c/0x90 [ 56.823249][ T5027] invoke_syscall+0x98/0x2b0 [ 56.824102][ T5027] el0_svc_common+0x138/0x258 [ 56.824968][ T5027] do_el0_svc+0x58/0x13c [ 56.825737][ T5027] el0_svc+0x78/0x1d0 [ 56.826496][ T5027] el0t_64_sync_handler+0xcc/0xe4 [ 56.827489][ T5027] el0t_64_sync+0x1a0/0x1a4 [ 56.828381][ T5027] irq event stamp: 78958 [ 56.829222][ T5027] hardirqs last enabled at (78957): [] __up_console_sem+0xb4/0xfc [ 56.831050][ T5027] hardirqs last disabled at (78958): [] el1_dbg+0x24/0x80 [ 56.832758][ T5027] softirqs last enabled at (78928): [] handle_softirqs+0xa40/0xbe4 [ 56.834591][ T5027] softirqs last disabled at (78913): [] __irq_exit_rcu+0x240/0x43c [ 56.836381][ T5027] ---[ end trace 97398f66ba0e41ac ]--- [ 56.838098][ T5027] BTRFS: error (device loop0) in btrfs_sync_log:3224: errno=-12 Out of memory [ 56.840021][ T5027] btrfs_printk: 86 callbacks suppressed [ 56.840026][ T5027] BTRFS info (device loop0): forced readonly [ 57.040378][ T5048] set_capacity_and_notify: 8 callbacks suppressed [ 57.040387][ T5048] loop0: detected capacity change from 0 to 32768 [ 57.045013][ T5048] BTRFS: device fsid c9fe44da-de57-406a-8241-57ec7d4412cf devid 1 transid 8 /dev/loop0 scanned by syz-executor.0 (5048) [ 57.056083][ T5048] BTRFS info (device loop0): using crc32c (crc32c-generic) checksum algorithm [ 57.057667][ T5048] BTRFS info (device loop0): setting nodatacow, compression disabled [ 57.059158][ T5048] BTRFS warning (device loop0): 'usebackuproot' is deprecated, use 'rescue=usebackuproot' instead [ 57.060895][ T5048] BTRFS info (device loop0): trying to use backup root at mount time [ 57.062279][ T5048] BTRFS info (device loop0): metadata ratio 1564 [ 57.063417][ T5048] BTRFS info (device loop0): doing ref verification [ 57.064638][ T5048] BTRFS info (device loop0): force zlib compression, level 3 [ 57.065999][ T5048] BTRFS info (device loop0): turning on flush-on-commit [ 57.067287][ T5048] BTRFS info (device loop0): using free space tree [ 57.068588][ T5048] BTRFS info (device loop0): has skinny extents [ 57.080369][ T5048] BTRFS info (device loop0): enabling ssd optimizations [ 57.085252][ T5048] FAULT_INJECTION: forcing a failure. [ 57.085252][ T5048] name failslab, interval 1, probability 0, space 0, times 0 [ 57.087722][ T5048] CPU: 0 PID: 5048 Comm: syz-executor.0 Tainted: G W syzkaller #0 [ 57.089434][ T5048] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/18/2026 [ 57.091382][ T5048] Call trace: [ 57.092019][ T5048] dump_backtrace+0x0/0x458 [ 57.092865][ T5048] show_stack+0x2c/0x3c [ 57.093661][ T5048] __dump_stack+0x30/0x40 [ 57.094474][ T5048] dump_stack_lvl+0xf4/0x15c [ 57.095334][ T5048] dump_stack+0x1c/0x5c [ 57.096073][ T5048] should_fail+0x3bc/0x514 [ 57.096851][ T5048] __should_failslab+0xbc/0x10c [ 57.097749][ T5048] should_failslab+0x10/0x28 [ 57.098601][ T5048] slab_pre_alloc_hook+0x64/0xe8 [ 57.099525][ T5048] kmem_cache_alloc+0x94/0x3d4 [ 57.100376][ T5048] btrfs_insert_item+0xd0/0x2b8 [ 57.101264][ T5048] btrfs_insert_root+0xa4/0x14c [ 57.102154][ T5048] btrfs_sync_log+0xb34/0x1f5c [ 57.103023][ T5048] btrfs_sync_file+0x9c0/0xebc [ 57.103925][ T5048] vfs_fsync_range+0x168/0x188 [ 57.104801][ T5048] btrfs_file_write_iter+0xa70/0xbb8 [ 57.105754][ T5048] vfs_write+0x590/0xa60 [ 57.106533][ T5048] ksys_write+0x12c/0x224 [ 57.107423][ T5048] __arm64_sys_write+0x7c/0x90 [ 57.108298][ T5048] invoke_syscall+0x98/0x2b0 [ 57.109154][ T5048] el0_svc_common+0x138/0x258 [ 57.110032][ T5048] do_el0_svc+0x58/0x13c [ 57.110778][ T5048] el0_svc+0x78/0x1d0 [ 57.111511][ T5048] el0t_64_sync_handler+0xcc/0xe4 [ 57.112382][ T5048] el0t_64_sync+0x1a0/0x1a4 [ 57.114302][ T5048] ------------[ cut here ]------------ [ 57.115464][ T5048] WARNING: CPU: 0 PID: 5048 at fs/btrfs/tree-log.c:3224 btrfs_sync_log+0x1438/0x1f5c [ 57.117064][ T5048] Modules linked in: [ 57.117753][ T5048] CPU: 0 PID: 5048 Comm: syz-executor.0 Tainted: G W syzkaller #0 [ 57.119385][ T5048] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/18/2026 [ 57.121186][ T5048] pstate: 62400005 (nZCv daif +PAN -UAO +TCO -DIT -SSBS BTYPE=--) [ 57.122568][ T5048] pc : btrfs_sync_log+0x1438/0x1f5c [ 57.123591][ T5048] lr : btrfs_sync_log+0x1438/0x1f5c [ 57.124596][ T5048] sp : ffff8000209373e0 [ 57.125363][ T5048] x29: ffff8000209377e0 x28: 1fffe0001b8f854a x27: ffff0000dc7c2aa8 [ 57.126954][ T5048] x26: dfff800000000000 x25: ffff0000dc7c2a50 x24: 00000000fffffff4 [ 57.128538][ T5048] x23: ffff0000e3bd0000 x22: ffff0000c97684e0 x21: 0000000000000000 [ 57.130131][ T5048] x20: ffff0000da306000 x19: 0000000000000009 x18: 0000000000000001 [ 57.131584][ T5048] x17: 0000000000000000 x16: ffff80001125f22c x15: 00000000ffffffff [ 57.133095][ T5048] x14: 0000000000000001 x13: 1fffe000341f05ab x12: 0000000000ff0100 [ 57.134638][ T5048] x11: 0000000000000000 x10: 0000000000000000 x9 : 8a019947c0f53200 [ 57.136134][ T5048] x8 : 8a019947c0f53200 x7 : 0000000000000001 x6 : 0000000000000001 [ 57.137641][ T5048] x5 : ffff800020936cf8 x4 : ffff80001437f3e0 x3 : ffff80000850932c [ 57.139116][ T5048] x2 : 0000000000000001 x1 : 0000000100000000 x0 : 0000000000000026 [ 57.140560][ T5048] Call trace: [ 57.141151][ T5048] btrfs_sync_log+0x1438/0x1f5c [ 57.142107][ T5048] btrfs_sync_file+0x9c0/0xebc [ 57.143062][ T5048] vfs_fsync_range+0x168/0x188 [ 57.143949][ T5048] btrfs_file_write_iter+0xa70/0xbb8 [ 57.144977][ T5048] vfs_write+0x590/0xa60 [ 57.145774][ T5048] ksys_write+0x12c/0x224 [ 57.146591][ T5048] __arm64_sys_write+0x7c/0x90 [ 57.147490][ T5048] invoke_syscall+0x98/0x2b0 [ 57.148397][ T5048] el0_svc_common+0x138/0x258 [ 57.149293][ T5048] do_el0_svc+0x58/0x13c [ 57.150105][ T5048] el0_svc+0x78/0x1d0 [ 57.150823][ T5048] el0t_64_sync_handler+0xcc/0xe4 [ 57.151756][ T5048] el0t_64_sync+0x1a0/0x1a4 [ 57.152576][ T5048] irq event stamp: 79334 [ 57.153353][ T5048] hardirqs last enabled at (79333): [] __up_console_sem+0xb4/0xfc [ 57.155040][ T5048] hardirqs last disabled at (79334): [] el1_dbg+0x24/0x80 [ 57.156589][ T5048] softirqs last enabled at (79300): [] handle_softirqs+0xa40/0xbe4 [ 57.158457][ T5048] softirqs last disabled at (79275): [] __irq_exit_rcu+0x240/0x43c [ 57.160312][ T5048] ---[ end trace 97398f66ba0e41ad ]--- [ 57.162645][ T5048] BTRFS: error (device loop0) in btrfs_sync_log:3224: errno=-12 Out of memory [ 57.164179][ T5048] BTRFS info (device loop0): forced readonly [ 57.335864][ T5069] loop0: detected capacity change from 0 to 32768 [ 57.339485][ T5069] BTRFS: device fsid c9fe44da-de57-406a-8241-57ec7d4412cf devid 1 transid 8 /dev/loop0 scanned by syz-executor.0 (5069) [ 57.343367][ T5069] BTRFS info (device loop0): using crc32c (crc32c-generic) checksum algorithm [ 57.345204][ T5069] BTRFS info (device loop0): setting nodatacow, compression disabled [ 57.346829][ T5069] BTRFS warning (device loop0): 'usebackuproot' is deprecated, use 'rescue=usebackuproot' instead [ 57.361808][ T5069] BTRFS info (device loop0): trying to use backup root at mount time [ 57.363474][ T5069] BTRFS info (device loop0): metadata ratio 1564 [ 57.364558][ T5069] BTRFS info (device loop0): doing ref verification [ 57.365694][ T5069] BTRFS info (device loop0): force zlib compression, level 3 [ 57.366949][ T5069] BTRFS info (device loop0): turning on flush-on-commit [ 57.368119][ T5069] BTRFS info (device loop0): using free space tree [ 57.369405][ T5069] BTRFS info (device loop0): has skinny extents [ 57.416302][ T5069] BTRFS info (device loop0): enabling ssd optimizations [ 57.421995][ T5069] FAULT_INJECTION: forcing a failure. [ 57.421995][ T5069] name failslab, interval 1, probability 0, space 0, times 0 [ 57.424312][ T5069] CPU: 0 PID: 5069 Comm: syz-executor.0 Tainted: G W syzkaller #0 [ 57.425943][ T5069] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/18/2026 [ 57.427743][ T5069] Call trace: [ 57.428306][ T5069] dump_backtrace+0x0/0x458 [ 57.429190][ T5069] show_stack+0x2c/0x3c [ 57.429995][ T5069] __dump_stack+0x30/0x40 [ 57.430820][ T5069] dump_stack_lvl+0xf4/0x15c [ 57.431714][ T5069] dump_stack+0x1c/0x5c [ 57.432445][ T5069] should_fail+0x3bc/0x514 [ 57.433246][ T5069] __should_failslab+0xbc/0x10c [ 57.434156][ T5069] should_failslab+0x10/0x28 [ 57.435011][ T5069] slab_pre_alloc_hook+0x64/0xe8 [ 57.435928][ T5069] kmem_cache_alloc+0x94/0x3d4 [ 57.436785][ T5069] btrfs_insert_item+0xd0/0x2b8 [ 57.437668][ T5069] btrfs_insert_root+0xa4/0x14c [ 57.438551][ T5069] btrfs_sync_log+0xb34/0x1f5c [ 57.439430][ T5069] btrfs_sync_file+0x9c0/0xebc [ 57.440278][ T5069] vfs_fsync_range+0x168/0x188 [ 57.441130][ T5069] btrfs_file_write_iter+0xa70/0xbb8 [ 57.442085][ T5069] vfs_write+0x590/0xa60 [ 57.442828][ T5069] ksys_write+0x12c/0x224 [ 57.443618][ T5069] __arm64_sys_write+0x7c/0x90 [ 57.444467][ T5069] invoke_syscall+0x98/0x2b0 [ 57.445266][ T5069] el0_svc_common+0x138/0x258 [ 57.446125][ T5069] do_el0_svc+0x58/0x13c [ 57.446892][ T5069] el0_svc+0x78/0x1d0 [ 57.447621][ T5069] el0t_64_sync_handler+0xcc/0xe4 [ 57.448550][ T5069] el0t_64_sync+0x1a0/0x1a4 [ 57.450805][ T5069] ------------[ cut here ]------------ [ 57.451893][ T5069] WARNING: CPU: 0 PID: 5069 at fs/btrfs/tree-log.c:3224 btrfs_sync_log+0x1438/0x1f5c [ 57.453529][ T5069] Modules linked in: [ 57.454173][ T5069] CPU: 0 PID: 5069 Comm: syz-executor.0 Tainted: G W syzkaller #0 [ 57.455727][ T5069] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/18/2026 [ 57.457479][ T5069] pstate: 62400005 (nZCv daif +PAN -UAO +TCO -DIT -SSBS BTYPE=--) [ 57.458825][ T5069] pc : btrfs_sync_log+0x1438/0x1f5c [ 57.459784][ T5069] lr : btrfs_sync_log+0x1438/0x1f5c [ 57.460735][ T5069] sp : ffff8000201d73e0 [ 57.461498][ T5069] x29: ffff8000201d77e0 x28: 1fffe0001b8f858c x27: ffff0000dc7c2cb8 [ 57.462988][ T5069] x26: dfff800000000000 x25: ffff0000dc7c2c60 x24: 00000000fffffff4 [ 57.464436][ T5069] x23: ffff0000d9224000 x22: ffff0000dcbe84e0 x21: 0000000000000000 [ 57.465876][ T5069] x20: ffff0000d9d70000 x19: 0000000000000009 x18: 0000000000000001 [ 57.467310][ T5069] x17: 0000000000000000 x16: ffff80001125f22c x15: 00000000ffffffff [ 57.468699][ T5069] x14: 0000000000000001 x13: 1fffe000341f05ab x12: 0000000000ff0100 [ 57.470260][ T5069] x11: 0000000000000000 x10: 0000000000000000 x9 : db33a2461f126f00 [ 57.471808][ T5069] x8 : db33a2461f126f00 x7 : 0000000000000001 x6 : 0000000000000001 [ 57.473322][ T5069] x5 : ffff8000201d6cf8 x4 : ffff80001437f3e0 x3 : ffff80000850932c [ 57.474784][ T5069] x2 : 0000000000000001 x1 : 0000000100000000 x0 : 0000000000000026 [ 57.476325][ T5069] Call trace: [ 57.476942][ T5069] btrfs_sync_log+0x1438/0x1f5c [ 57.477837][ T5069] btrfs_sync_file+0x9c0/0xebc [ 57.478747][ T5069] vfs_fsync_range+0x168/0x188 [ 57.479632][ T5069] btrfs_file_write_iter+0xa70/0xbb8 [ 57.480628][ T5069] vfs_write+0x590/0xa60 [ 57.481413][ T5069] ksys_write+0x12c/0x224 [ 57.482243][ T5069] __arm64_sys_write+0x7c/0x90 [ 57.483147][ T5069] invoke_syscall+0x98/0x2b0 [ 57.484017][ T5069] el0_svc_common+0x138/0x258 [ 57.484909][ T5069] do_el0_svc+0x58/0x13c [ 57.485685][ T5069] el0_svc+0x78/0x1d0 [ 57.486408][ T5069] el0t_64_sync_handler+0xcc/0xe4 [ 57.487335][ T5069] el0t_64_sync+0x1a0/0x1a4 [ 57.488154][ T5069] irq event stamp: 80844 [ 57.488922][ T5069] hardirqs last enabled at (80843): [] __up_console_sem+0xb4/0xfc [ 57.490645][ T5069] hardirqs last disabled at (80844): [] el1_dbg+0x24/0x80 [ 57.492256][ T5069] softirqs last enabled at (80818): [] handle_softirqs+0xa40/0xbe4 [ 57.494032][ T5069] softirqs last disabled at (80387): [] __irq_exit_rcu+0x240/0x43c [ 57.495815][ T5069] ---[ end trace 97398f66ba0e41ae ]--- [ 57.497063][ T5069] BTRFS: error (device loop0) in btrfs_sync_log:3224: errno=-12 Out of memory [ 57.498891][ T5069] BTRFS info (device loop0): forced readonly [ 57.672890][ T5090] loop0: detected capacity change from 0 to 32768 [ 57.675654][ T5090] BTRFS: device fsid c9fe44da-de57-406a-8241-57ec7d4412cf devid 1 transid 8 /dev/loop0 scanned by syz-executor.0 (5090) [ 57.680696][ T5090] BTRFS info (device loop0): using crc32c (crc32c-generic) checksum algorithm [ 57.682422][ T5090] BTRFS info (device loop0): setting nodatacow, compression disabled [ 57.683955][ T5090] BTRFS warning (device loop0): 'usebackuproot' is deprecated, use 'rescue=usebackuproot' instead [ 57.686030][ T5090] BTRFS info (device loop0): trying to use backup root at mount time [ 57.687574][ T5090] BTRFS info (device loop0): metadata ratio 1564 [ 57.689250][ T5090] BTRFS info (device loop0): doing ref verification [ 57.690416][ T5090] BTRFS info (device loop0): force zlib compression, level 3 [ 57.691872][ T5090] BTRFS info (device loop0): turning on flush-on-commit [ 57.693202][ T5090] BTRFS info (device loop0): using free space tree [ 57.694456][ T5090] BTRFS info (device loop0): has skinny extents [ 57.712197][ T5090] BTRFS info (device loop0): enabling ssd optimizations [ 57.717639][ T5090] FAULT_INJECTION: forcing a failure. [ 57.717639][ T5090] name failslab, interval 1, probability 0, space 0, times 0 [ 57.720899][ T5090] CPU: 0 PID: 5090 Comm: syz-executor.0 Tainted: G W syzkaller #0 [ 57.722535][ T5090] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/18/2026 [ 57.724197][ T5090] Call trace: [ 57.724822][ T5090] dump_backtrace+0x0/0x458 [ 57.725591][ T5090] show_stack+0x2c/0x3c [ 57.726357][ T5090] __dump_stack+0x30/0x40 [ 57.727137][ T5090] dump_stack_lvl+0xf4/0x15c [ 57.727963][ T5090] dump_stack+0x1c/0x5c [ 57.728726][ T5090] should_fail+0x3bc/0x514 [ 57.729578][ T5090] __should_failslab+0xbc/0x10c [ 57.730503][ T5090] should_failslab+0x10/0x28 [ 57.731333][ T5090] slab_pre_alloc_hook+0x64/0xe8 [ 57.732236][ T5090] kmem_cache_alloc+0x94/0x3d4 [ 57.733049][ T5090] mempool_alloc_slab+0x58/0x74 [ 57.733950][ T5090] mempool_alloc+0x144/0x3f0 [ 57.734774][ T5090] bio_alloc_bioset+0x118/0x718 [ 57.735657][ T5090] submit_extent_page+0x424/0x11d4 [ 57.736605][ T5090] write_one_eb+0x1bc/0x55c [ 57.737431][ T5090] btree_write_cache_pages+0xef4/0x149c [ 57.738444][ T5090] btree_writepages+0x6c/0x190 [ 57.739335][ T5090] do_writepages+0x364/0x584 [ 57.740203][ T5090] filemap_fdatawrite_wbc+0x1d4/0x234 [ 57.741187][ T5090] filemap_fdatawrite_range+0xc0/0x114 [ 57.742223][ T5090] btrfs_write_marked_extents+0x1bc/0x364 [ 57.743311][ T5090] btrfs_sync_log+0x12f8/0x1f5c [ 57.744213][ T5090] btrfs_sync_file+0x9c0/0xebc [ 57.745082][ T5090] vfs_fsync_range+0x168/0x188 [ 57.745961][ T5090] btrfs_file_write_iter+0xa70/0xbb8 [ 57.746943][ T5090] vfs_write+0x590/0xa60 [ 57.747706][ T5090] ksys_write+0x12c/0x224 [ 57.748522][ T5090] __arm64_sys_write+0x7c/0x90 [ 57.749422][ T5090] invoke_syscall+0x98/0x2b0 [ 57.750245][ T5090] el0_svc_common+0x138/0x258 [ 57.751123][ T5090] do_el0_svc+0x58/0x13c [ 57.751909][ T5090] el0_svc+0x78/0x1d0 [ 57.752629][ T5090] el0t_64_sync_handler+0xcc/0xe4 [ 57.753566][ T5090] el0t_64_sync+0x1a0/0x1a4 [ 57.933983][ T5111] loop0: detected capacity change from 0 to 32768 [ 57.940026][ T5111] BTRFS: device fsid c9fe44da-de57-406a-8241-57ec7d4412cf devid 1 transid 8 /dev/loop0 scanned by syz-executor.0 (5111) [ 57.946216][ T5111] BTRFS info (device loop0): using crc32c (crc32c-generic) checksum algorithm [ 57.947913][ T5111] BTRFS info (device loop0): setting nodatacow, compression disabled [ 57.949915][ T5111] BTRFS warning (device loop0): 'usebackuproot' is deprecated, use 'rescue=usebackuproot' instead [ 57.951817][ T5111] BTRFS info (device loop0): trying to use backup root at mount time [ 57.953332][ T5111] BTRFS info (device loop0): metadata ratio 1564 [ 57.954532][ T5111] BTRFS info (device loop0): doing ref verification [ 57.955760][ T5111] BTRFS info (device loop0): force zlib compression, level 3 [ 57.957102][ T5111] BTRFS info (device loop0): turning on flush-on-commit [ 57.958327][ T5111] BTRFS info (device loop0): using free space tree [ 57.960593][ T5111] BTRFS info (device loop0): has skinny extents [ 57.967685][ T5111] BTRFS info (device loop0): enabling ssd optimizations [ 57.973814][ T5111] FAULT_INJECTION: forcing a failure. [ 57.973814][ T5111] name failslab, interval 1, probability 0, space 0, times 0 [ 57.976071][ T5111] CPU: 1 PID: 5111 Comm: syz-executor.0 Tainted: G W syzkaller #0 [ 57.977727][ T5111] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/18/2026 [ 57.979600][ T5111] Call trace: [ 57.980243][ T5111] dump_backtrace+0x0/0x458 [ 57.981172][ T5111] show_stack+0x2c/0x3c [ 57.982010][ T5111] __dump_stack+0x30/0x40 [ 57.982883][ T5111] dump_stack_lvl+0xf4/0x15c [ 57.983757][ T5111] dump_stack+0x1c/0x5c [ 57.984541][ T5111] should_fail+0x3bc/0x514 [ 57.985430][ T5111] __should_failslab+0xbc/0x10c [ 57.986402][ T5111] should_failslab+0x10/0x28 [ 57.987296][ T5111] slab_pre_alloc_hook+0x64/0xe8 [ 57.988254][ T5111] kmem_cache_alloc+0x94/0x3d4 [ 57.989191][ T5111] mempool_alloc_slab+0x58/0x74 [ 57.990101][ T5111] mempool_alloc+0x144/0x3f0 [ 57.990945][ T5111] bio_alloc_bioset+0x118/0x718 [ 57.991862][ T5111] submit_extent_page+0x424/0x11d4 [ 57.992849][ T5111] write_one_eb+0x1bc/0x55c [ 57.993706][ T5111] btree_write_cache_pages+0xef4/0x149c [ 57.994697][ T5111] btree_writepages+0x6c/0x190 [ 57.995502][ T5111] do_writepages+0x364/0x584 [ 57.996350][ T5111] filemap_fdatawrite_wbc+0x1d4/0x234 [ 57.997288][ T5111] filemap_fdatawrite_range+0xc0/0x114 [ 57.998244][ T5111] btrfs_write_marked_extents+0x1bc/0x364 [ 57.999288][ T5111] btrfs_sync_log+0x12f8/0x1f5c [ 58.000173][ T5111] btrfs_sync_file+0x9c0/0xebc [ 58.001016][ T5111] vfs_fsync_range+0x168/0x188 [ 58.001863][ T5111] btrfs_file_write_iter+0xa70/0xbb8 [ 58.002881][ T5111] vfs_write+0x590/0xa60 [ 58.003702][ T5111] ksys_write+0x12c/0x224 [ 58.004539][ T5111] __arm64_sys_write+0x7c/0x90 [ 58.005438][ T5111] invoke_syscall+0x98/0x2b0 [ 58.006327][ T5111] el0_svc_common+0x138/0x258 [ 58.007211][ T5111] do_el0_svc+0x58/0x13c [ 58.008033][ T5111] el0_svc+0x78/0x1d0 [ 58.008796][ T5111] el0t_64_sync_handler+0xcc/0xe4 [ 58.009753][ T5111] el0t_64_sync+0x1a0/0x1a4 [ 58.187185][ T5132] loop0: detected capacity change from 0 to 32768 [ 58.190362][ T5132] BTRFS: device fsid c9fe44da-de57-406a-8241-57ec7d4412cf devid 1 transid 8 /dev/loop0 scanned by syz-executor.0 (5132) [ 58.195053][ T5132] BTRFS info (device loop0): using crc32c (crc32c-generic) checksum algorithm [ 58.196692][ T5132] BTRFS info (device loop0): setting nodatacow, compression disabled [ 58.198167][ T5132] BTRFS warning (device loop0): 'usebackuproot' is deprecated, use 'rescue=usebackuproot' instead [ 58.200698][ T5132] BTRFS info (device loop0): trying to use backup root at mount time [ 58.202157][ T5132] BTRFS info (device loop0): metadata ratio 1564 [ 58.203235][ T5132] BTRFS info (device loop0): doing ref verification [ 58.204384][ T5132] BTRFS info (device loop0): force zlib compression, level 3 [ 58.205751][ T5132] BTRFS info (device loop0): turning on flush-on-commit [ 58.206969][ T5132] BTRFS info (device loop0): using free space tree [ 58.208088][ T5132] BTRFS info (device loop0): has skinny extents [ 58.217230][ T5132] BTRFS info (device loop0): enabling ssd optimizations [ 58.223062][ T5132] FAULT_INJECTION: forcing a failure. [ 58.223062][ T5132] name failslab, interval 1, probability 0, space 0, times 0 [ 58.225615][ T5132] CPU: 0 PID: 5132 Comm: syz-executor.0 Tainted: G W syzkaller #0 [ 58.227305][ T5132] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/18/2026 [ 58.229120][ T5132] Call trace: [ 58.229717][ T5132] dump_backtrace+0x0/0x458 [ 58.230560][ T5132] show_stack+0x2c/0x3c [ 58.231357][ T5132] __dump_stack+0x30/0x40 [ 58.232145][ T5132] dump_stack_lvl+0xf4/0x15c [ 58.232984][ T5132] dump_stack+0x1c/0x5c [ 58.233767][ T5132] should_fail+0x3bc/0x514 [ 58.234597][ T5132] __should_failslab+0xbc/0x10c [ 58.235558][ T5132] should_failslab+0x10/0x28 [ 58.236468][ T5132] slab_pre_alloc_hook+0x64/0xe8 [ 58.237422][ T5132] kmem_cache_alloc+0x94/0x3d4 [ 58.238301][ T5132] alloc_extent_state+0x38/0x42c [ 58.239212][ T5132] convert_extent_bit+0x17c/0x16ec [ 58.240143][ T5132] btrfs_write_marked_extents+0x178/0x364 [ 58.241286][ T5132] btrfs_sync_log+0x12f8/0x1f5c [ 58.242199][ T5132] btrfs_sync_file+0x9c0/0xebc [ 58.243082][ T5132] vfs_fsync_range+0x168/0x188 [ 58.243985][ T5132] btrfs_file_write_iter+0xa70/0xbb8 [ 58.244976][ T5132] vfs_write+0x590/0xa60 [ 58.245743][ T5132] ksys_write+0x12c/0x224 [ 58.246532][ T5132] __arm64_sys_write+0x7c/0x90 [ 58.247374][ T5132] invoke_syscall+0x98/0x2b0 [ 58.248248][ T5132] el0_svc_common+0x138/0x258 [ 58.249118][ T5132] do_el0_svc+0x58/0x13c [ 58.249963][ T5132] el0_svc+0x78/0x1d0 [ 58.250712][ T5132] el0t_64_sync_handler+0xcc/0xe4 [ 58.251631][ T5132] el0t_64_sync+0x1a0/0x1a4 [ 58.431794][ T5153] loop0: detected capacity change from 0 to 32768 [ 58.436354][ T5153] BTRFS: device fsid c9fe44da-de57-406a-8241-57ec7d4412cf devid 1 transid 8 /dev/loop0 scanned by syz-executor.0 (5153) [ 58.441852][ T5153] BTRFS info (device loop0): using crc32c (crc32c-generic) checksum algorithm [ 58.443666][ T5153] BTRFS info (device loop0): setting nodatacow, compression disabled [ 58.445195][ T5153] BTRFS warning (device loop0): 'usebackuproot' is deprecated, use 'rescue=usebackuproot' instead [ 58.447228][ T5153] BTRFS info (device loop0): trying to use backup root at mount time [ 58.449203][ T5153] BTRFS info (device loop0): metadata ratio 1564 [ 58.450422][ T5153] BTRFS info (device loop0): doing ref verification [ 58.451732][ T5153] BTRFS info (device loop0): force zlib compression, level 3 [ 58.453172][ T5153] BTRFS info (device loop0): turning on flush-on-commit [ 58.454522][ T5153] BTRFS info (device loop0): using free space tree [ 58.455760][ T5153] BTRFS info (device loop0): has skinny extents [ 58.468502][ T5153] BTRFS info (device loop0): enabling ssd optimizations [ 58.473475][ T5153] FAULT_INJECTION: forcing a failure. [ 58.473475][ T5153] name failslab, interval 1, probability 0, space 0, times 0 [ 58.475918][ T5153] CPU: 1 PID: 5153 Comm: syz-executor.0 Tainted: G W syzkaller #0 [ 58.477588][ T5153] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/18/2026 [ 58.479452][ T5153] Call trace: [ 58.480075][ T5153] dump_backtrace+0x0/0x458 [ 58.480938][ T5153] show_stack+0x2c/0x3c [ 58.481762][ T5153] __dump_stack+0x30/0x40 [ 58.482580][ T5153] dump_stack_lvl+0xf4/0x15c [ 58.483462][ T5153] dump_stack+0x1c/0x5c [ 58.484260][ T5153] should_fail+0x3bc/0x514 [ 58.485096][ T5153] __should_failslab+0xbc/0x10c [ 58.486028][ T5153] should_failslab+0x10/0x28 [ 58.486887][ T5153] slab_pre_alloc_hook+0x64/0xe8 [ 58.487774][ T5153] kmem_cache_alloc+0x94/0x3d4 [ 58.488670][ T5153] alloc_extent_state+0x38/0x42c [ 58.489619][ T5153] convert_extent_bit+0x17c/0x16ec [ 58.490609][ T5153] btrfs_write_marked_extents+0x178/0x364 [ 58.491739][ T5153] btrfs_sync_log+0x12f8/0x1f5c [ 58.492710][ T5153] btrfs_sync_file+0x9c0/0xebc [ 58.493656][ T5153] vfs_fsync_range+0x168/0x188 [ 58.494589][ T5153] btrfs_file_write_iter+0xa70/0xbb8 [ 58.495606][ T5153] vfs_write+0x590/0xa60 [ 58.496448][ T5153] ksys_write+0x12c/0x224 [ 58.497288][ T5153] __arm64_sys_write+0x7c/0x90 [ 58.498221][ T5153] invoke_syscall+0x98/0x2b0 [ 58.499104][ T5153] el0_svc_common+0x138/0x258 [ 58.499967][ T5153] do_el0_svc+0x58/0x13c [ 58.500771][ T5153] el0_svc+0x78/0x1d0 [ 58.501533][ T5153] el0t_64_sync_handler+0xcc/0xe4 [ 58.502481][ T5153] el0t_64_sync+0x1a0/0x1a4 [ 58.710977][ T5174] loop0: detected capacity change from 0 to 32768 [ 58.713655][ T5174] BTRFS: device fsid c9fe44da-de57-406a-8241-57ec7d4412cf devid 1 transid 8 /dev/loop0 scanned by syz-executor.0 (5174) [ 58.717383][ T5174] BTRFS info (device loop0): using crc32c (crc32c-generic) checksum algorithm [ 58.719480][ T5174] BTRFS info (device loop0): setting nodatacow, compression disabled [ 58.720938][ T5174] BTRFS warning (device loop0): 'usebackuproot' is deprecated, use 'rescue=usebackuproot' instead [ 58.722939][ T5174] BTRFS info (device loop0): trying to use backup root at mount time [ 58.724647][ T5174] BTRFS info (device loop0): metadata ratio 1564 [ 58.725842][ T5174] BTRFS info (device loop0): doing ref verification [ 58.727189][ T5174] BTRFS info (device loop0): force zlib compression, level 3 [ 58.729002][ T5174] BTRFS info (device loop0): turning on flush-on-commit [ 58.730301][ T5174] BTRFS info (device loop0): using free space tree [ 58.731609][ T5174] BTRFS info (device loop0): has skinny extents [ 58.741171][ T5174] BTRFS info (device loop0): enabling ssd optimizations [ 58.746248][ T5174] FAULT_INJECTION: forcing a failure. [ 58.746248][ T5174] name failslab, interval 1, probability 0, space 0, times 0 [ 58.748570][ T5174] CPU: 0 PID: 5174 Comm: syz-executor.0 Tainted: G W syzkaller #0 [ 58.750172][ T5174] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/18/2026 [ 58.751953][ T5174] Call trace: [ 58.752533][ T5174] dump_backtrace+0x0/0x458 [ 58.753325][ T5174] show_stack+0x2c/0x3c [ 58.754060][ T5174] __dump_stack+0x30/0x40 [ 58.754811][ T5174] dump_stack_lvl+0xf4/0x15c [ 58.755607][ T5174] dump_stack+0x1c/0x5c [ 58.756314][ T5174] should_fail+0x3bc/0x514 [ 58.757062][ T5174] __should_failslab+0xbc/0x10c [ 58.757893][ T5174] should_failslab+0x10/0x28 [ 58.758722][ T5174] slab_pre_alloc_hook+0x64/0xe8 [ 58.759625][ T5174] kmem_cache_alloc+0x94/0x3d4 [ 58.760490][ T5174] alloc_extent_state+0x38/0x42c [ 58.761438][ T5174] convert_extent_bit+0x17c/0x16ec [ 58.762429][ T5174] btrfs_write_marked_extents+0x178/0x364 [ 58.763531][ T5174] btrfs_sync_log+0x12f8/0x1f5c [ 58.764463][ T5174] btrfs_sync_file+0x9c0/0xebc [ 58.765281][ T5174] vfs_fsync_range+0x168/0x188 [ 58.766088][ T5174] btrfs_file_write_iter+0xa70/0xbb8 [ 58.767013][ T5174] vfs_write+0x590/0xa60 [ 58.767828][ T5174] ksys_write+0x12c/0x224 [ 58.768687][ T5174] __arm64_sys_write+0x7c/0x90 [ 58.769576][ T5174] invoke_syscall+0x98/0x2b0 [ 58.770445][ T5174] el0_svc_common+0x138/0x258 [ 58.771370][ T5174] do_el0_svc+0x58/0x13c [ 58.772216][ T5174] el0_svc+0x78/0x1d0 [ 58.773003][ T5174] el0t_64_sync_handler+0xcc/0xe4 [ 58.773912][ T5174] el0t_64_sync+0x1a0/0x1a4 [ 58.808528][ T25] Bluetooth: hci0: command 0x0419 tx timeout [ 58.948349][ T5195] loop0: detected capacity change from 0 to 32768 [ 58.953003][ T5195] BTRFS: device fsid c9fe44da-de57-406a-8241-57ec7d4412cf devid 1 transid 8 /dev/loop0 scanned by syz-executor.0 (5195) [ 58.957742][ T5195] BTRFS info (device loop0): using crc32c (crc32c-generic) checksum algorithm [ 58.959482][ T5195] BTRFS info (device loop0): setting nodatacow, compression disabled [ 58.961036][ T5195] BTRFS warning (device loop0): 'usebackuproot' is deprecated, use 'rescue=usebackuproot' instead [ 58.963023][ T5195] BTRFS info (device loop0): trying to use backup root at mount time [ 58.964583][ T5195] BTRFS info (device loop0): metadata ratio 1564 [ 58.965851][ T5195] BTRFS info (device loop0): doing ref verification [ 58.967133][ T5195] BTRFS info (device loop0): force zlib compression, level 3 [ 58.968672][ T5195] BTRFS info (device loop0): turning on flush-on-commit [ 58.969945][ T5195] BTRFS info (device loop0): using free space tree [ 58.971214][ T5195] BTRFS info (device loop0): has skinny extents [ 58.985209][ T5195] BTRFS info (device loop0): enabling ssd optimizations [ 58.990184][ T5195] FAULT_INJECTION: forcing a failure. [ 58.990184][ T5195] name failslab, interval 1, probability 0, space 0, times 0 [ 58.992513][ T5195] CPU: 0 PID: 5195 Comm: syz-executor.0 Tainted: G W syzkaller #0 [ 58.994024][ T5195] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/18/2026 [ 58.995811][ T5195] Call trace: [ 58.996369][ T5195] dump_backtrace+0x0/0x458 [ 58.997174][ T5195] show_stack+0x2c/0x3c [ 58.997929][ T5195] __dump_stack+0x30/0x40 [ 58.998700][ T5195] dump_stack_lvl+0xf4/0x15c [ 58.999539][ T5195] dump_stack+0x1c/0x5c [ 59.000278][ T5195] should_fail+0x3bc/0x514 [ 59.001135][ T5195] __should_failslab+0xbc/0x10c [ 59.002072][ T5195] should_failslab+0x10/0x28 [ 59.002936][ T5195] slab_pre_alloc_hook+0x64/0xe8 [ 59.003833][ T5195] kmem_cache_alloc+0x94/0x3d4 [ 59.004697][ T5195] btrfs_insert_item+0xd0/0x2b8 [ 59.005604][ T5195] btrfs_insert_root+0xa4/0x14c [ 59.006552][ T5195] btrfs_sync_log+0xb34/0x1f5c [ 59.007467][ T5195] btrfs_sync_file+0x9c0/0xebc [ 59.008362][ T5195] vfs_fsync_range+0x168/0x188 [ 59.009194][ T5195] btrfs_file_write_iter+0xa70/0xbb8 [ 59.010159][ T5195] vfs_write+0x590/0xa60 [ 59.010930][ T5195] ksys_write+0x12c/0x224 [ 59.011718][ T5195] __arm64_sys_write+0x7c/0x90 [ 59.012566][ T5195] invoke_syscall+0x98/0x2b0 [ 59.013396][ T5195] el0_svc_common+0x138/0x258 [ 59.014309][ T5195] do_el0_svc+0x58/0x13c [ 59.015098][ T5195] el0_svc+0x78/0x1d0 [ 59.015864][ T5195] el0t_64_sync_handler+0xcc/0xe4 [ 59.016763][ T5195] el0t_64_sync+0x1a0/0x1a4 [ 59.017854][ T5195] ------------[ cut here ]------------ [ 59.019040][ T5195] WARNING: CPU: 0 PID: 5195 at fs/btrfs/tree-log.c:3224 btrfs_sync_log+0x1438/0x1f5c [ 59.020694][ T5195] Modules linked in: [ 59.021355][ T5195] CPU: 0 PID: 5195 Comm: syz-executor.0 Tainted: G W syzkaller #0 [ 59.022978][ T5195] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/18/2026 [ 59.024795][ T5195] pstate: 62400005 (nZCv daif +PAN -UAO +TCO -DIT -SSBS BTYPE=--) [ 59.026173][ T5195] pc : btrfs_sync_log+0x1438/0x1f5c [ 59.027111][ T5195] lr : btrfs_sync_log+0x1438/0x1f5c [ 59.028049][ T5195] sp : ffff8000210e73e0 [ 59.028781][ T5195] x29: ffff8000210e77e0 x28: 1fffe0001bc38442 x27: ffff0000de1c2268 [ 59.030224][ T5195] x26: dfff800000000000 x25: ffff0000de1c2210 x24: 00000000fffffff4 [ 59.031714][ T5195] x23: ffff0000d8e10000 x22: ffff0000d0d684e0 x21: 0000000000000000 [ 59.033175][ T5195] x20: ffff0000d9098000 x19: 0000000000000009 x18: 0000000000000001 [ 59.034626][ T5195] x17: 0000000000000000 x16: ffff800008304c04 x15: 00000000ffffffff [ 59.036090][ T5195] x14: 0000000000000001 x13: 1ffff0000421cd9c x12: 0000000000ff0100 [ 59.037578][ T5195] x11: 0000000000000000 x10: 0000000000000000 x9 : f775a31c67894400 [ 59.039086][ T5195] x8 : f775a31c67894400 x7 : 0000000000000001 x6 : 0000000000000001 [ 59.040604][ T5195] x5 : ffff8000210e6cf8 x4 : ffff80001437f3e0 x3 : ffff800008304d14 [ 59.042165][ T5195] x2 : 0000000000000001 x1 : 0000000100000000 x0 : 0000000000000026 [ 59.043725][ T5195] Call trace: [ 59.044353][ T5195] btrfs_sync_log+0x1438/0x1f5c [ 59.045259][ T5195] btrfs_sync_file+0x9c0/0xebc [ 59.046112][ T5195] vfs_fsync_range+0x168/0x188 [ 59.046980][ T5195] btrfs_file_write_iter+0xa70/0xbb8 [ 59.047938][ T5195] vfs_write+0x590/0xa60 [ 59.048689][ T5195] ksys_write+0x12c/0x224 [ 59.049465][ T5195] __arm64_sys_write+0x7c/0x90 [ 59.050305][ T5195] invoke_syscall+0x98/0x2b0 [ 59.051140][ T5195] el0_svc_common+0x138/0x258 [ 59.051984][ T5195] do_el0_svc+0x58/0x13c [ 59.052753][ T5195] el0_svc+0x78/0x1d0 [ 59.053466][ T5195] el0t_64_sync_handler+0xcc/0xe4 [ 59.054415][ T5195] el0t_64_sync+0x1a0/0x1a4 [ 59.055239][ T5195] irq event stamp: 79216 [ 59.056024][ T5195] hardirqs last enabled at (79215): [] __up_console_sem+0xb4/0xfc [ 59.057815][ T5195] hardirqs last disabled at (79216): [] el1_dbg+0x24/0x80 [ 59.059458][ T5195] softirqs last enabled at (79204): [] handle_softirqs+0xa40/0xbe4 [ 59.061300][ T5195] softirqs last disabled at (79191): [] __irq_exit_rcu+0x240/0x43c [ 59.063012][ T5195] ---[ end trace 97398f66ba0e41af ]--- [ 59.064147][ T5195] BTRFS: error (device loop0) in btrfs_sync_log:3224: errno=-12 Out of memory [ 59.065728][ T5195] BTRFS info (device loop0): forced readonly [ 59.253481][ T5216] loop0: detected capacity change from 0 to 32768 [ 59.256832][ T5216] BTRFS: device fsid c9fe44da-de57-406a-8241-57ec7d4412cf devid 1 transid 8 /dev/loop0 scanned by syz-executor.0 (5216) [ 59.261937][ T5216] BTRFS info (device loop0): using crc32c (crc32c-generic) checksum algorithm [ 59.263764][ T5216] BTRFS info (device loop0): setting nodatacow, compression disabled [ 59.265258][ T5216] BTRFS warning (device loop0): 'usebackuproot' is deprecated, use 'rescue=usebackuproot' instead [ 59.267246][ T5216] BTRFS info (device loop0): trying to use backup root at mount time [ 59.268822][ T5216] BTRFS info (device loop0): metadata ratio 1564 [ 59.270077][ T5216] BTRFS info (device loop0): doing ref verification [ 59.271281][ T5216] BTRFS info (device loop0): force zlib compression, level 3 [ 59.272581][ T5216] BTRFS info (device loop0): turning on flush-on-commit [ 59.273916][ T5216] BTRFS info (device loop0): using free space tree [ 59.275238][ T5216] BTRFS info (device loop0): has skinny extents [ 59.288703][ T5216] BTRFS info (device loop0): enabling ssd optimizations [ 59.293400][ T5216] FAULT_INJECTION: forcing a failure. [ 59.293400][ T5216] name failslab, interval 1, probability 0, space 0, times 0 [ 59.295828][ T5216] CPU: 0 PID: 5216 Comm: syz-executor.0 Tainted: G W syzkaller #0 [ 59.297485][ T5216] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/18/2026 [ 59.299329][ T5216] Call trace: [ 59.299919][ T5216] dump_backtrace+0x0/0x458 [ 59.300724][ T5216] show_stack+0x2c/0x3c [ 59.301480][ T5216] __dump_stack+0x30/0x40 [ 59.302341][ T5216] dump_stack_lvl+0xf4/0x15c [ 59.303164][ T5216] dump_stack+0x1c/0x5c [ 59.303907][ T5216] should_fail+0x3bc/0x514 [ 59.304679][ T5216] __should_failslab+0xbc/0x10c [ 59.305591][ T5216] should_failslab+0x10/0x28 [ 59.306545][ T5216] slab_pre_alloc_hook+0x64/0xe8 [ 59.307521][ T5216] kmem_cache_alloc+0x94/0x3d4 [ 59.308432][ T5216] btrfs_insert_item+0xd0/0x2b8 [ 59.309353][ T5216] btrfs_insert_root+0xa4/0x14c [ 59.310286][ T5216] btrfs_sync_log+0xb34/0x1f5c [ 59.311180][ T5216] btrfs_sync_file+0x9c0/0xebc [ 59.312055][ T5216] vfs_fsync_range+0x168/0x188 [ 59.312971][ T5216] btrfs_file_write_iter+0xa70/0xbb8 [ 59.313965][ T5216] vfs_write+0x590/0xa60 [ 59.314698][ T5216] ksys_write+0x12c/0x224 [ 59.315426][ T5216] __arm64_sys_write+0x7c/0x90 [ 59.316291][ T5216] invoke_syscall+0x98/0x2b0 [ 59.317113][ T5216] el0_svc_common+0x138/0x258 [ 59.318042][ T5216] do_el0_svc+0x58/0x13c [ 59.318855][ T5216] el0_svc+0x78/0x1d0 [ 59.319588][ T5216] el0t_64_sync_handler+0xcc/0xe4 [ 59.320521][ T5216] el0t_64_sync+0x1a0/0x1a4 [ 59.321746][ T5216] ------------[ cut here ]------------ [ 59.322813][ T5216] WARNING: CPU: 0 PID: 5216 at fs/btrfs/tree-log.c:3224 btrfs_sync_log+0x1438/0x1f5c [ 59.324445][ T5216] Modules linked in: [ 59.325164][ T5216] CPU: 0 PID: 5216 Comm: syz-executor.0 Tainted: G W syzkaller #0 [ 59.326812][ T5216] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/18/2026 [ 59.328580][ T5216] pstate: 62400005 (nZCv daif +PAN -UAO +TCO -DIT -SSBS BTYPE=--) [ 59.329929][ T5216] pc : btrfs_sync_log+0x1438/0x1f5c [ 59.330871][ T5216] lr : btrfs_sync_log+0x1438/0x1f5c [ 59.331760][ T5216] sp : ffff8000211173e0 [ 59.332506][ T5216] x29: ffff8000211177e0 x28: 1fffe0001bc38416 x27: ffff0000de1c2108 [ 59.334092][ T5216] x26: dfff800000000000 x25: ffff0000de1c20b0 x24: 00000000fffffff4 [ 59.335610][ T5216] x23: ffff0000da144000 x22: ffff0000d0d684e0 x21: 0000000000000000 [ 59.337039][ T5216] x20: ffff0000d9d64000 x19: 0000000000000009 x18: 0000000000000001 [ 59.338593][ T5216] x17: 0000000000000000 x16: ffff800008304c04 x15: 00000000ffffffff [ 59.340115][ T5216] x14: 0000000000000001 x13: 1ffff00004222d9c x12: 0000000000ff0100 [ 59.341572][ T5216] x11: 0000000000000000 x10: 0000000000000000 x9 : d49c73c36de1b800 [ 59.343013][ T5216] x8 : d49c73c36de1b800 x7 : 0000000000000001 x6 : 0000000000000001 [ 59.344528][ T5216] x5 : ffff800021116cf8 x4 : ffff80001437f3e0 x3 : ffff800008304d14 [ 59.345989][ T5216] x2 : 0000000000000001 x1 : 0000000100000000 x0 : 0000000000000026 [ 59.347462][ T5216] Call trace: [ 59.348057][ T5216] btrfs_sync_log+0x1438/0x1f5c [ 59.348930][ T5216] btrfs_sync_file+0x9c0/0xebc [ 59.349797][ T5216] vfs_fsync_range+0x168/0x188 [ 59.350644][ T5216] btrfs_file_write_iter+0xa70/0xbb8 [ 59.351602][ T5216] vfs_write+0x590/0xa60 [ 59.352372][ T5216] ksys_write+0x12c/0x224 [ 59.353159][ T5216] __arm64_sys_write+0x7c/0x90 [ 59.354007][ T5216] invoke_syscall+0x98/0x2b0 [ 59.354848][ T5216] el0_svc_common+0x138/0x258 [ 59.355695][ T5216] do_el0_svc+0x58/0x13c [ 59.356464][ T5216] el0_svc+0x78/0x1d0 [ 59.357199][ T5216] el0t_64_sync_handler+0xcc/0xe4 [ 59.358133][ T5216] el0t_64_sync+0x1a0/0x1a4 [ 59.358957][ T5216] irq event stamp: 79308 [ 59.359751][ T5216] hardirqs last enabled at (79307): [] __up_console_sem+0xb4/0xfc [ 59.361551][ T5216] hardirqs last disabled at (79308): [] el1_dbg+0x24/0x80 [ 59.363202][ T5216] softirqs last enabled at (79282): [] handle_softirqs+0xa40/0xbe4 [ 59.364957][ T5216] softirqs last disabled at (79199): [] __irq_exit_rcu+0x240/0x43c [ 59.366767][ T5216] ---[ end trace 97398f66ba0e41b0 ]--- [ 59.367974][ T5216] BTRFS: error (device loop0) in btrfs_sync_log:3224: errno=-12 Out of memory [ 59.369664][ T5216] BTRFS info (device loop0): forced readonly [ 59.545053][ T5237] loop0: detected capacity change from 0 to 32768 [ 59.547688][ T5237] BTRFS: device fsid c9fe44da-de57-406a-8241-57ec7d4412cf devid 1 transid 8 /dev/loop0 scanned by syz-executor.0 (5237) [ 59.560350][ T5237] BTRFS info (device loop0): using crc32c (crc32c-generic) checksum algorithm [ 59.561988][ T5237] BTRFS info (device loop0): setting nodatacow, compression disabled [ 59.563397][ T5237] BTRFS warning (device loop0): 'usebackuproot' is deprecated, use 'rescue=usebackuproot' instead [ 59.565316][ T5237] BTRFS info (device loop0): trying to use backup root at mount time [ 59.566876][ T5237] BTRFS info (device loop0): metadata ratio 1564 [ 59.568067][ T5237] BTRFS info (device loop0): doing ref verification [ 59.579798][ T5237] FAULT_INJECTION: forcing a failure. [ 59.579798][ T5237] name failslab, interval 1, probability 0, space 0, times 0 [ 59.582026][ T5237] CPU: 1 PID: 5237 Comm: syz-executor.0 Tainted: G W syzkaller #0 [ 59.583584][ T5237] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/18/2026 [ 59.585396][ T5237] Call trace: [ 59.585972][ T5237] dump_backtrace+0x0/0x458 [ 59.586763][ T5237] show_stack+0x2c/0x3c [ 59.587577][ T5237] __dump_stack+0x30/0x40 [ 59.588379][ T5237] dump_stack_lvl+0xf4/0x15c [ 59.589318][ T5237] dump_stack+0x1c/0x5c [ 59.590169][ T5237] should_fail+0x3bc/0x514 [ 59.591040][ T5237] __should_failslab+0xbc/0x10c [ 59.592001][ T5237] should_failslab+0x10/0x28 [ 59.592890][ T5237] slab_pre_alloc_hook+0x64/0xe8 [ 59.593849][ T5237] kmem_cache_alloc+0x94/0x3d4 [ 59.594775][ T5237] mempool_alloc_slab+0x58/0x74 [ 59.595692][ T5237] mempool_alloc+0x144/0x3f0 [ 59.596576][ T5237] bio_alloc_bioset+0x118/0x718 [ 59.597451][ T5237] submit_extent_page+0x424/0x11d4 [ 59.598377][ T5237] write_one_eb+0x1bc/0x55c [ 59.599232][ T5237] btree_write_cache_pages+0xef4/0x149c [ 59.600320][ T5237] btree_writepages+0x6c/0x190 [ 59.601260][ T5237] do_writepages+0x364/0x584 [ 59.602148][ T5237] filemap_fdatawrite_wbc+0x1d4/0x234 [ 59.603233][ T5237] filemap_fdatawrite_range+0xc0/0x114 [ 59.604370][ T5237] btrfs_write_marked_extents+0x1bc/0x364 [ 59.605535][ T5237] btrfs_sync_log+0x12f8/0x1f5c [ 59.606499][ T5237] btrfs_sync_file+0x9c0/0xebc [ 59.607411][ T5237] vfs_fsync_range+0x168/0x188 [ 59.608317][ T5237] btrfs_file_write_iter+0xa70/0xbb8 [ 59.609382][ T5237] vfs_write+0x590/0xa60 [ 59.610215][ T5237] ksys_write+0x12c/0x224 [ 59.611045][ T5237] __arm64_sys_write+0x7c/0x90 [ 59.611864][ T5237] invoke_syscall+0x98/0x2b0 [ 59.612711][ T5237] el0_svc_common+0x138/0x258 [ 59.613571][ T5237] do_el0_svc+0x58/0x13c [ 59.614398][ T5237] el0_svc+0x78/0x1d0 [ 59.615151][ T5237] el0t_64_sync_handler+0xcc/0xe4 [ 59.616124][ T5237] el0t_64_sync+0x1a0/0x1a4 [ 59.822021][ T5258] BTRFS: device fsid c9fe44da-de57-406a-8241-57ec7d4412cf devid 1 transid 8 /dev/loop0 scanned by syz-executor.0 (5258) [ 59.825759][ T5258] BTRFS warning (device loop0): 'usebackuproot' is deprecated, use 'rescue=usebackuproot' instead [ 59.847503][ T5258] FAULT_INJECTION: forcing a failure. [ 59.847503][ T5258] name failslab, interval 1, probability 0, space 0, times 0 [ 59.850289][ T5258] CPU: 1 PID: 5258 Comm: syz-executor.0 Tainted: G W syzkaller #0 [ 59.851923][ T5258] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/18/2026 [ 59.853862][ T5258] Call trace: [ 59.854503][ T5258] dump_backtrace+0x0/0x458 [ 59.855386][ T5258] show_stack+0x2c/0x3c [ 59.856191][ T5258] __dump_stack+0x30/0x40 [ 59.857058][ T5258] dump_stack_lvl+0xf4/0x15c [ 59.857993][ T5258] dump_stack+0x1c/0x5c [ 59.858826][ T5258] should_fail+0x3bc/0x514 [ 59.859720][ T5258] __should_failslab+0xbc/0x10c [ 59.860675][ T5258] should_failslab+0x10/0x28 [ 59.861583][ T5258] slab_pre_alloc_hook+0x64/0xe8 [ 59.862534][ T5258] kmem_cache_alloc+0x94/0x3d4 [ 59.863495][ T5258] alloc_extent_state+0x38/0x42c [ 59.864456][ T5258] convert_extent_bit+0x17c/0x16ec [ 59.865395][ T5258] btrfs_write_marked_extents+0x178/0x364 [ 59.866484][ T5258] btrfs_sync_log+0x12f8/0x1f5c [ 59.867450][ T5258] btrfs_sync_file+0x9c0/0xebc [ 59.868386][ T5258] vfs_fsync_range+0x168/0x188 [ 59.869325][ T5258] btrfs_file_write_iter+0xa70/0xbb8 [ 59.870426][ T5258] vfs_write+0x590/0xa60 [ 59.871307][ T5258] ksys_write+0x12c/0x224 [ 59.872174][ T5258] __arm64_sys_write+0x7c/0x90 [ 59.873162][ T5258] invoke_syscall+0x98/0x2b0 [ 59.874079][ T5258] el0_svc_common+0x138/0x258 [ 59.875019][ T5258] do_el0_svc+0x58/0x13c [ 59.875849][ T5258] el0_svc+0x78/0x1d0 [ 59.876610][ T5258] el0t_64_sync_handler+0xcc/0xe4 [ 59.877585][ T5258] el0t_64_sync+0x1a0/0x1a4 [ 60.057801][ T5279] BTRFS: device fsid c9fe44da-de57-406a-8241-57ec7d4412cf devid 1 transid 8 /dev/loop0 scanned by syz-executor.0 (5279) [ 60.063289][ T5279] BTRFS warning (device loop0): 'usebackuproot' is deprecated, use 'rescue=usebackuproot' instead [ 60.078543][ T5279] FAULT_INJECTION: forcing a failure. [ 60.078543][ T5279] name failslab, interval 1, probability 0, space 0, times 0 [ 60.080894][ T5279] CPU: 0 PID: 5279 Comm: syz-executor.0 Tainted: G W syzkaller #0 [ 60.082590][ T5279] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/18/2026 [ 60.084427][ T5279] Call trace: [ 60.085039][ T5279] dump_backtrace+0x0/0x458 [ 60.085840][ T5279] show_stack+0x2c/0x3c [ 60.086621][ T5279] __dump_stack+0x30/0x40 [ 60.087418][ T5279] dump_stack_lvl+0xf4/0x15c [ 60.088283][ T5279] dump_stack+0x1c/0x5c [ 60.089031][ T5279] should_fail+0x3bc/0x514 [ 60.089889][ T5279] __should_failslab+0xbc/0x10c [ 60.090840][ T5279] should_failslab+0x10/0x28 [ 60.091735][ T5279] slab_pre_alloc_hook+0x64/0xe8 [ 60.092684][ T5279] kmem_cache_alloc+0x94/0x3d4 [ 60.093603][ T5279] mempool_alloc_slab+0x58/0x74 [ 60.094566][ T5279] mempool_alloc+0x144/0x3f0 [ 60.095421][ T5279] bio_alloc_bioset+0x118/0x718 [ 60.096367][ T5279] submit_extent_page+0x424/0x11d4 [ 60.097330][ T5279] write_one_eb+0x1bc/0x55c [ 60.098155][ T5279] btree_write_cache_pages+0xef4/0x149c [ 60.099192][ T5279] btree_writepages+0x6c/0x190 [ 60.100082][ T5279] do_writepages+0x364/0x584 [ 60.100943][ T5279] filemap_fdatawrite_wbc+0x1d4/0x234 [ 60.101885][ T5279] filemap_fdatawrite_range+0xc0/0x114 [ 60.102834][ T5279] btrfs_write_marked_extents+0x1bc/0x364 [ 60.103848][ T5279] btrfs_sync_log+0x12f8/0x1f5c [ 60.104692][ T5279] btrfs_sync_file+0x9c0/0xebc [ 60.105527][ T5279] vfs_fsync_range+0x168/0x188 [ 60.106361][ T5279] btrfs_file_write_iter+0xa70/0xbb8 [ 60.107284][ T5279] vfs_write+0x590/0xa60 [ 60.108104][ T5279] ksys_write+0x12c/0x224 [ 60.108855][ T5279] __arm64_sys_write+0x7c/0x90 [ 60.109764][ T5279] invoke_syscall+0x98/0x2b0 [ 60.110622][ T5279] el0_svc_common+0x138/0x258 [ 60.111485][ T5279] do_el0_svc+0x58/0x13c [ 60.112258][ T5279] el0_svc+0x78/0x1d0 [ 60.113038][ T5279] el0t_64_sync_handler+0xcc/0xe4 [ 60.113967][ T5279] el0t_64_sync+0x1a0/0x1a4 [ 60.293754][ T5300] BTRFS: device fsid c9fe44da-de57-406a-8241-57ec7d4412cf devid 1 transid 8 /dev/loop0 scanned by syz-executor.0 (5300) [ 60.297536][ T5300] BTRFS warning (device loop0): 'usebackuproot' is deprecated, use 'rescue=usebackuproot' instead [ 60.311983][ T5300] FAULT_INJECTION: forcing a failure. [ 60.311983][ T5300] name failslab, interval 1, probability 0, space 0, times 0 [ 60.314705][ T5300] CPU: 1 PID: 5300 Comm: syz-executor.0 Tainted: G W syzkaller #0 [ 60.316443][ T5300] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/18/2026 [ 60.318516][ T5300] Call trace: [ 60.319180][ T5300] dump_backtrace+0x0/0x458 [ 60.320062][ T5300] show_stack+0x2c/0x3c [ 60.320808][ T5300] __dump_stack+0x30/0x40 [ 60.321640][ T5300] dump_stack_lvl+0xf4/0x15c [ 60.322476][ T5300] dump_stack+0x1c/0x5c [ 60.323238][ T5300] should_fail+0x3bc/0x514 [ 60.324031][ T5300] __should_failslab+0xbc/0x10c [ 60.324920][ T5300] should_failslab+0x10/0x28 [ 60.325759][ T5300] slab_pre_alloc_hook+0x64/0xe8 [ 60.326774][ T5300] kmem_cache_alloc+0x94/0x3d4 [ 60.327742][ T5300] mempool_alloc_slab+0x58/0x74 [ 60.328671][ T5300] mempool_alloc+0x144/0x3f0 [ 60.329526][ T5300] bio_alloc_bioset+0x118/0x718 [ 60.330457][ T5300] submit_extent_page+0x424/0x11d4 [ 60.331522][ T5300] write_one_eb+0x1bc/0x55c [ 60.332453][ T5300] btree_write_cache_pages+0xef4/0x149c [ 60.333607][ T5300] btree_writepages+0x6c/0x190 [ 60.334594][ T5300] do_writepages+0x364/0x584 [ 60.335520][ T5300] filemap_fdatawrite_wbc+0x1d4/0x234 [ 60.336619][ T5300] filemap_fdatawrite_range+0xc0/0x114 [ 60.337675][ T5300] btrfs_write_marked_extents+0x1bc/0x364 [ 60.338772][ T5300] btrfs_sync_log+0x12f8/0x1f5c [ 60.339752][ T5300] btrfs_sync_file+0x9c0/0xebc [ 60.340742][ T5300] vfs_fsync_range+0x168/0x188 [ 60.341666][ T5300] btrfs_file_write_iter+0xa70/0xbb8 [ 60.342693][ T5300] vfs_write+0x590/0xa60 [ 60.343532][ T5300] ksys_write+0x12c/0x224 [ 60.344388][ T5300] __arm64_sys_write+0x7c/0x90 [ 60.345363][ T5300] invoke_syscall+0x98/0x2b0 [ 60.346255][ T5300] el0_svc_common+0x138/0x258 [ 60.347153][ T5300] do_el0_svc+0x58/0x13c [ 60.347973][ T5300] el0_svc+0x78/0x1d0 [ 60.348736][ T5300] el0t_64_sync_handler+0xcc/0xe4 [ 60.349733][ T5300] el0t_64_sync+0x1a0/0x1a4 [ 60.521339][ T5321] BTRFS: device fsid c9fe44da-de57-406a-8241-57ec7d4412cf devid 1 transid 8 /dev/loop0 scanned by syz-executor.0 (5321) [ 60.526268][ T5321] BTRFS warning (device loop0): 'usebackuproot' is deprecated, use 'rescue=usebackuproot' instead [ 60.539520][ T5321] FAULT_INJECTION: forcing a failure. [ 60.539520][ T5321] name failslab, interval 1, probability 0, space 0, times 0 [ 60.541797][ T5321] CPU: 1 PID: 5321 Comm: syz-executor.0 Tainted: G W syzkaller #0 [ 60.543475][ T5321] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/18/2026 [ 60.545422][ T5321] Call trace: [ 60.545983][ T5321] dump_backtrace+0x0/0x458 [ 60.546844][ T5321] show_stack+0x2c/0x3c [ 60.547553][ T5321] __dump_stack+0x30/0x40 [ 60.548373][ T5321] dump_stack_lvl+0xf4/0x15c [ 60.549295][ T5321] dump_stack+0x1c/0x5c [ 60.550131][ T5321] should_fail+0x3bc/0x514 [ 60.550957][ T5321] __should_failslab+0xbc/0x10c [ 60.551894][ T5321] should_failslab+0x10/0x28 [ 60.552804][ T5321] slab_pre_alloc_hook+0x64/0xe8 [ 60.553791][ T5321] kmem_cache_alloc+0x94/0x3d4 [ 60.554780][ T5321] alloc_extent_state+0x38/0x42c [ 60.555775][ T5321] convert_extent_bit+0x17c/0x16ec [ 60.556782][ T5321] btrfs_write_marked_extents+0x178/0x364 [ 60.557872][ T5321] btrfs_sync_log+0x12f8/0x1f5c [ 60.558806][ T5321] btrfs_sync_file+0x9c0/0xebc [ 60.559706][ T5321] vfs_fsync_range+0x168/0x188 [ 60.560657][ T5321] btrfs_file_write_iter+0xa70/0xbb8 [ 60.561800][ T5321] vfs_write+0x590/0xa60 [ 60.562678][ T5321] ksys_write+0x12c/0x224 [ 60.563536][ T5321] __arm64_sys_write+0x7c/0x90 [ 60.564479][ T5321] invoke_syscall+0x98/0x2b0 [ 60.565404][ T5321] el0_svc_common+0x138/0x258 [ 60.566339][ T5321] do_el0_svc+0x58/0x13c [ 60.567240][ T5321] el0_svc+0x78/0x1d0 [ 60.568042][ T5321] el0t_64_sync_handler+0xcc/0xe4 [ 60.569060][ T5321] el0t_64_sync+0x1a0/0x1a4 1970/01/01 00:01:00 executed programs: 32 [ 60.779702][ T5342] BTRFS: device fsid c9fe44da-de57-406a-8241-57ec7d4412cf devid 1 transid 8 /dev/loop0 scanned by syz-executor.0 (5342) [ 60.790799][ T5342] BTRFS warning (device loop0): 'usebackuproot' is deprecated, use 'rescue=usebackuproot' instead [ 60.805638][ T5342] FAULT_INJECTION: forcing a failure. [ 60.805638][ T5342] name failslab, interval 1, probability 0, space 0, times 0 [ 60.808164][ T5342] CPU: 1 PID: 5342 Comm: syz-executor.0 Tainted: G W syzkaller #0 [ 60.809937][ T5342] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/18/2026 [ 60.811842][ T5342] Call trace: [ 60.812460][ T5342] dump_backtrace+0x0/0x458 [ 60.813308][ T5342] show_stack+0x2c/0x3c [ 60.814118][ T5342] __dump_stack+0x30/0x40 [ 60.814958][ T5342] dump_stack_lvl+0xf4/0x15c [ 60.815885][ T5342] dump_stack+0x1c/0x5c [ 60.816747][ T5342] should_fail+0x3bc/0x514 [ 60.817662][ T5342] __should_failslab+0xbc/0x10c [ 60.818655][ T5342] should_failslab+0x10/0x28 [ 60.819557][ T5342] slab_pre_alloc_hook+0x64/0xe8 [ 60.820517][ T5342] kmem_cache_alloc+0x94/0x3d4 [ 60.821425][ T5342] alloc_extent_state+0x38/0x42c [ 60.822363][ T5342] convert_extent_bit+0x17c/0x16ec [ 60.823296][ T5342] btrfs_write_marked_extents+0x178/0x364 [ 60.824403][ T5342] btrfs_sync_log+0x12f8/0x1f5c [ 60.825340][ T5342] btrfs_sync_file+0x9c0/0xebc [ 60.826242][ T5342] vfs_fsync_range+0x168/0x188 [ 60.827139][ T5342] btrfs_file_write_iter+0xa70/0xbb8 [ 60.828208][ T5342] vfs_write+0x590/0xa60 [ 60.829008][ T5342] ksys_write+0x12c/0x224 [ 60.829847][ T5342] __arm64_sys_write+0x7c/0x90 [ 60.830784][ T5342] invoke_syscall+0x98/0x2b0 [ 60.831667][ T5342] el0_svc_common+0x138/0x258 [ 60.832596][ T5342] do_el0_svc+0x58/0x13c [ 60.833418][ T5342] el0_svc+0x78/0x1d0 [ 60.834195][ T5342] el0t_64_sync_handler+0xcc/0xe4 [ 60.835181][ T5342] el0t_64_sync+0x1a0/0x1a4 [ 61.020288][ T5363] BTRFS: device fsid c9fe44da-de57-406a-8241-57ec7d4412cf devid 1 transid 8 /dev/loop0 scanned by syz-executor.0 (5363) [ 61.023929][ T5363] BTRFS warning (device loop0): 'usebackuproot' is deprecated, use 'rescue=usebackuproot' instead [ 61.041612][ T5363] FAULT_INJECTION: forcing a failure. [ 61.041612][ T5363] name failslab, interval 1, probability 0, space 0, times 0 [ 61.044174][ T5363] CPU: 0 PID: 5363 Comm: syz-executor.0 Tainted: G W syzkaller #0 [ 61.045776][ T5363] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/18/2026 [ 61.047639][ T5363] Call trace: [ 61.048220][ T5363] dump_backtrace+0x0/0x458 [ 61.048961][ T5363] show_stack+0x2c/0x3c [ 61.049672][ T5363] __dump_stack+0x30/0x40 [ 61.050474][ T5363] dump_stack_lvl+0xf4/0x15c [ 61.051330][ T5363] dump_stack+0x1c/0x5c [ 61.052069][ T5363] should_fail+0x3bc/0x514 [ 61.052890][ T5363] __should_failslab+0xbc/0x10c [ 61.053829][ T5363] should_failslab+0x10/0x28 [ 61.054647][ T5363] slab_pre_alloc_hook+0x64/0xe8 [ 61.055568][ T5363] kmem_cache_alloc+0x94/0x3d4 [ 61.056447][ T5363] mempool_alloc_slab+0x58/0x74 [ 61.057353][ T5363] mempool_alloc+0x144/0x3f0 [ 61.058261][ T5363] bio_alloc_bioset+0x118/0x718 [ 61.059201][ T5363] submit_extent_page+0x424/0x11d4 [ 61.060218][ T5363] write_one_eb+0x1bc/0x55c [ 61.061109][ T5363] btree_write_cache_pages+0xef4/0x149c [ 61.062204][ T5363] btree_writepages+0x6c/0x190 [ 61.063153][ T5363] do_writepages+0x364/0x584 [ 61.064025][ T5363] filemap_fdatawrite_wbc+0x1d4/0x234 [ 61.065100][ T5363] filemap_fdatawrite_range+0xc0/0x114 [ 61.066139][ T5363] btrfs_write_marked_extents+0x1bc/0x364 [ 61.067195][ T5363] btrfs_sync_log+0x12f8/0x1f5c [ 61.068125][ T5363] btrfs_sync_file+0x9c0/0xebc [ 61.069049][ T5363] vfs_fsync_range+0x168/0x188 [ 61.069954][ T5363] btrfs_file_write_iter+0xa70/0xbb8 [ 61.070893][ T5363] vfs_write+0x590/0xa60 [ 61.071646][ T5363] ksys_write+0x12c/0x224 [ 61.072460][ T5363] __arm64_sys_write+0x7c/0x90 [ 61.073389][ T5363] invoke_syscall+0x98/0x2b0 [ 61.074264][ T5363] el0_svc_common+0x138/0x258 [ 61.075136][ T5363] do_el0_svc+0x58/0x13c [ 61.075901][ T5363] el0_svc+0x78/0x1d0 [ 61.076652][ T5363] el0t_64_sync_handler+0xcc/0xe4 [ 61.077590][ T5363] el0t_64_sync+0x1a0/0x1a4 [ 61.243021][ T5384] BTRFS: device fsid c9fe44da-de57-406a-8241-57ec7d4412cf devid 1 transid 8 /dev/loop0 scanned by syz-executor.0 (5384) [ 61.246435][ T5384] BTRFS warning (device loop0): 'usebackuproot' is deprecated, use 'rescue=usebackuproot' instead [ 61.261937][ T5384] FAULT_INJECTION: forcing a failure. [ 61.261937][ T5384] name failslab, interval 1, probability 0, space 0, times 0 [ 61.264569][ T5384] CPU: 1 PID: 5384 Comm: syz-executor.0 Tainted: G W syzkaller #0 [ 61.266299][ T5384] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/18/2026 [ 61.268291][ T5384] Call trace: [ 61.268919][ T5384] dump_backtrace+0x0/0x458 [ 61.269802][ T5384] show_stack+0x2c/0x3c [ 61.270609][ T5384] __dump_stack+0x30/0x40 [ 61.271498][ T5384] dump_stack_lvl+0xf4/0x15c [ 61.272394][ T5384] dump_stack+0x1c/0x5c [ 61.273223][ T5384] should_fail+0x3bc/0x514 [ 61.274077][ T5384] __should_failslab+0xbc/0x10c [ 61.274999][ T5384] should_failslab+0x10/0x28 [ 61.275860][ T5384] slab_pre_alloc_hook+0x64/0xe8 [ 61.276838][ T5384] kmem_cache_alloc+0x94/0x3d4 [ 61.277730][ T5384] mempool_alloc_slab+0x58/0x74 [ 61.278662][ T5384] mempool_alloc+0x144/0x3f0 [ 61.279569][ T5384] bio_alloc_bioset+0x118/0x718 [ 61.280521][ T5384] submit_extent_page+0x424/0x11d4 [ 61.281477][ T5384] write_one_eb+0x1bc/0x55c [ 61.282396][ T5384] btree_write_cache_pages+0xef4/0x149c [ 61.283492][ T5384] btree_writepages+0x6c/0x190 [ 61.284444][ T5384] do_writepages+0x364/0x584 [ 61.285375][ T5384] filemap_fdatawrite_wbc+0x1d4/0x234 [ 61.286477][ T5384] filemap_fdatawrite_range+0xc0/0x114 [ 61.287576][ T5384] btrfs_write_marked_extents+0x1bc/0x364 [ 61.288721][ T5384] btrfs_sync_log+0x12f8/0x1f5c [ 61.289685][ T5384] btrfs_sync_file+0x9c0/0xebc [ 61.290667][ T5384] vfs_fsync_range+0x168/0x188 [ 61.291557][ T5384] btrfs_file_write_iter+0xa70/0xbb8 [ 61.292530][ T5384] vfs_write+0x590/0xa60 [ 61.293290][ T5384] ksys_write+0x12c/0x224 [ 61.294101][ T5384] __arm64_sys_write+0x7c/0x90 [ 61.295067][ T5384] invoke_syscall+0x98/0x2b0 [ 61.295998][ T5384] el0_svc_common+0x138/0x258 [ 61.296889][ T5384] do_el0_svc+0x58/0x13c [ 61.297708][ T5384] el0_svc+0x78/0x1d0 [ 61.298483][ T5384] el0t_64_sync_handler+0xcc/0xe4 [ 61.299456][ T5384] el0t_64_sync+0x1a0/0x1a4 [ 61.509763][ T5405] BTRFS: device fsid c9fe44da-de57-406a-8241-57ec7d4412cf devid 1 transid 8 /dev/loop0 scanned by syz-executor.0 (5405) [ 61.514529][ T5405] BTRFS warning (device loop0): 'usebackuproot' is deprecated, use 'rescue=usebackuproot' instead [ 61.530716][ T5405] FAULT_INJECTION: forcing a failure. [ 61.530716][ T5405] name failslab, interval 1, probability 0, space 0, times 0 [ 61.533340][ T5405] CPU: 1 PID: 5405 Comm: syz-executor.0 Tainted: G W syzkaller #0 [ 61.535077][ T5405] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/18/2026 [ 61.537099][ T5405] Call trace: [ 61.537741][ T5405] dump_backtrace+0x0/0x458 [ 61.538642][ T5405] show_stack+0x2c/0x3c [ 61.539443][ T5405] __dump_stack+0x30/0x40 [ 61.540295][ T5405] dump_stack_lvl+0xf4/0x15c [ 61.541193][ T5405] dump_stack+0x1c/0x5c [ 61.542013][ T5405] should_fail+0x3bc/0x514 [ 61.542811][ T5405] __should_failslab+0xbc/0x10c [ 61.543719][ T5405] should_failslab+0x10/0x28 [ 61.544582][ T5405] slab_pre_alloc_hook+0x64/0xe8 [ 61.545497][ T5405] kmem_cache_alloc+0x94/0x3d4 [ 61.546439][ T5405] alloc_extent_state+0x38/0x42c [ 61.547388][ T5405] convert_extent_bit+0x17c/0x16ec [ 61.548325][ T5405] btrfs_write_marked_extents+0x178/0x364 [ 61.549346][ T5405] btrfs_sync_log+0x12f8/0x1f5c [ 61.550159][ T5405] btrfs_sync_file+0x9c0/0xebc [ 61.551005][ T5405] vfs_fsync_range+0x168/0x188 [ 61.551848][ T5405] btrfs_file_write_iter+0xa70/0xbb8 [ 61.552813][ T5405] vfs_write+0x590/0xa60 [ 61.553602][ T5405] ksys_write+0x12c/0x224 [ 61.554396][ T5405] __arm64_sys_write+0x7c/0x90 [ 61.555216][ T5405] invoke_syscall+0x98/0x2b0 [ 61.556004][ T5405] el0_svc_common+0x138/0x258 [ 61.556819][ T5405] do_el0_svc+0x58/0x13c [ 61.557628][ T5405] el0_svc+0x78/0x1d0 [ 61.558330][ T5405] el0t_64_sync_handler+0xcc/0xe4 [ 61.559279][ T5405] el0t_64_sync+0x1a0/0x1a4 [ 61.747668][ T5426] BTRFS: device fsid c9fe44da-de57-406a-8241-57ec7d4412cf devid 1 transid 8 /dev/loop0 scanned by syz-executor.0 (5426) [ 61.751252][ T5426] BTRFS warning (device loop0): 'usebackuproot' is deprecated, use 'rescue=usebackuproot' instead [ 61.768866][ T5426] FAULT_INJECTION: forcing a failure. [ 61.768866][ T5426] name failslab, interval 1, probability 0, space 0, times 0 [ 61.771384][ T5426] CPU: 0 PID: 5426 Comm: syz-executor.0 Tainted: G W syzkaller #0 [ 61.773053][ T5426] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/18/2026 [ 61.774934][ T5426] Call trace: [ 61.775548][ T5426] dump_backtrace+0x0/0x458 [ 61.776458][ T5426] show_stack+0x2c/0x3c [ 61.777240][ T5426] __dump_stack+0x30/0x40 [ 61.778099][ T5426] dump_stack_lvl+0xf4/0x15c [ 61.778972][ T5426] dump_stack+0x1c/0x5c [ 61.779739][ T5426] should_fail+0x3bc/0x514 [ 61.780523][ T5426] __should_failslab+0xbc/0x10c [ 61.781411][ T5426] should_failslab+0x10/0x28 [ 61.782257][ T5426] slab_pre_alloc_hook+0x64/0xe8 [ 61.783179][ T5426] kmem_cache_alloc+0x94/0x3d4 [ 61.784046][ T5426] alloc_extent_state+0x38/0x42c [ 61.784894][ T5426] convert_extent_bit+0x17c/0x16ec [ 61.785783][ T5426] btrfs_write_marked_extents+0x178/0x364 [ 61.786849][ T5426] btrfs_sync_log+0x12f8/0x1f5c [ 61.787758][ T5426] btrfs_sync_file+0x9c0/0xebc [ 61.788628][ T5426] vfs_fsync_range+0x168/0x188 [ 61.789509][ T5426] btrfs_file_write_iter+0xa70/0xbb8 [ 61.790499][ T5426] vfs_write+0x590/0xa60 [ 61.791259][ T5426] ksys_write+0x12c/0x224 [ 61.792057][ T5426] __arm64_sys_write+0x7c/0x90 [ 61.792909][ T5426] invoke_syscall+0x98/0x2b0 [ 61.793754][ T5426] el0_svc_common+0x138/0x258 [ 61.794616][ T5426] do_el0_svc+0x58/0x13c [ 61.795404][ T5426] el0_svc+0x78/0x1d0 [ 61.796167][ T5426] el0t_64_sync_handler+0xcc/0xe4 [ 61.797118][ T5426] el0t_64_sync+0x1a0/0x1a4