Warning: Permanently added '10.128.1.125' (ED25519) to the list of known hosts. Setting up swapspace version 1, size = 127995904 bytes syzkaller login: [ 41.681760][ T4019] Adding 124996k swap on ./swap-file. Priority:0 extents:1 across:124996k SSFS executing program [ 41.899090][ T4021] loop0: detected capacity change from 0 to 32768 [ 41.997785][ T4021] BTRFS: device fsid ed167579-eb65-4e76-9a50-61ac97e9b59d devid 1 transid 8 /dev/loop0 scanned by syz-executor900 (4021) [ 42.050366][ T4021] BTRFS info (device loop0): using sha256 (sha256-ce) checksum algorithm [ 42.052668][ T4021] BTRFS info (device loop0): enabling auto defrag [ 42.058666][ T4021] BTRFS info (device loop0): enabling ssd optimizations [ 42.060491][ T4021] BTRFS info (device loop0): using spread ssd allocation scheme [ 42.062175][ T4021] BTRFS info (device loop0): max_inline at 0 [ 42.063665][ T4021] BTRFS info (device loop0): force clearing of disk cache [ 42.065464][ T4021] BTRFS info (device loop0): turning on sync discard [ 42.067320][ T4021] BTRFS info (device loop0): disabling free space tree [ 42.069061][ T4021] BTRFS info (device loop0): has skinny extents [ 42.098428][ T4021] BTRFS info (device loop0): clearing free space tree [ 42.100541][ T4021] BTRFS info (device loop0): clearing compat-ro feature flag for FREE_SPACE_TREE (0x1) [ 42.102997][ T4021] BTRFS info (device loop0): clearing compat-ro feature flag for FREE_SPACE_TREE_VALID (0x2) [ 42.122340][ T4021] FAULT_INJECTION: forcing a failure. [ 42.122340][ T4021] name failslab, interval 1, probability 0, space 0, times 1 [ 42.125731][ T4021] CPU: 0 PID: 4021 Comm: syz-executor900 Not tainted 5.15.176-syzkaller #0 [ 42.128026][ T4021] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 12/27/2024 [ 42.130648][ T4021] Call trace: [ 42.131588][ T4021] dump_backtrace+0x0/0x530 [ 42.132809][ T4021] show_stack+0x2c/0x3c [ 42.133908][ T4021] dump_stack_lvl+0x108/0x170 [ 42.135158][ T4021] dump_stack+0x1c/0x58 [ 42.136258][ T4021] should_fail+0x3b8/0x514 [ 42.137408][ T4021] __should_failslab+0xbc/0x110 [ 42.138748][ T4021] should_failslab+0x10/0x28 [ 42.139952][ T4021] slab_pre_alloc_hook+0x64/0xe8 [ 42.141214][ T4021] kmem_cache_alloc+0x98/0x45c [ 42.142454][ T4021] btrfs_alloc_path+0x5c/0x68 [ 42.143641][ T4021] __btrfs_free_extent+0x1f4/0x2100 [ 42.144931][ T4021] __btrfs_run_delayed_refs+0xdd0/0x3d50 [ 42.146373][ T4021] btrfs_run_delayed_refs+0x11c/0x47c [ 42.147800][ T4021] btrfs_commit_transaction+0x1b8/0x30f0 [ 42.149205][ T4021] btrfs_ioctl_set_fslabel+0x2e8/0x39c [ 42.150609][ T4021] btrfs_ioctl+0x50c/0xa5c [ 42.151791][ T4021] __arm64_sys_ioctl+0x14c/0x1c8 [ 42.153045][ T4021] invoke_syscall+0x98/0x2b8 [ 42.154282][ T4021] el0_svc_common+0x138/0x258 [ 42.155520][ T4021] do_el0_svc+0x58/0x14c [ 42.156583][ T4021] el0_svc+0x7c/0x1f0 [ 42.157632][ T4021] el0t_64_sync_handler+0x84/0xe4 [ 42.158913][ T4021] el0t_64_sync+0x1a0/0x1a4 [ 42.162198][ T4021] BTRFS error (device loop0): failed to run delayed ref for logical 5255168 num_bytes 4096 type 176 action 2 ref_mod 1: -12 [ 42.165524][ T4021] ------------[ cut here ]------------ [ 42.167603][ T4021] WARNING: CPU: 0 PID: 4021 at fs/btrfs/extent-tree.c:2158 btrfs_run_delayed_refs+0x408/0x47c [ 42.170202][ T4021] Modules linked in: [ 42.171143][ T4021] CPU: 0 PID: 4021 Comm: syz-executor900 Not tainted 5.15.176-syzkaller #0 [ 42.173285][ T4021] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 12/27/2024 [ 42.175707][ T4021] pstate: 60400005 (nZCv daif +PAN -UAO -TCO -DIT -SSBS BTYPE=--) [ 42.177743][ T4021] pc : btrfs_run_delayed_refs+0x408/0x47c [ 42.179290][ T4021] lr : btrfs_run_delayed_refs+0x408/0x47c [ 42.180778][ T4021] sp : ffff80001fb177b0 [ 42.181875][ T4021] x29: ffff80001fb177c0 x28: dfff800000000000 x27: ffff0000d1e1f024 [ 42.184037][ T4021] x26: 00000000fffffff4 x25: ffff0000dbfaf1b8 x24: 1fffe0001b7f5e37 [ 42.186201][ T4021] x23: ffff0000dbfaf1b8 x22: 0000000000000000 x21: 0000000000000006 [ 42.188248][ T4021] x20: ffff0000d1e1f000 x19: ffff0000dbfaf160 x18: 0000000000000001 [ 42.190266][ T4021] x17: 0000000000000000 x16: ffff800011b4c240 x15: 00000000ffffffff [ 42.192271][ T4021] x14: ffff0000dce8d1c0 x13: 0000000000000001 x12: 0000000000000001 [ 42.194382][ T4021] x11: 0000000000000000 x10: 0000000000000000 x9 : b95b5cd9c334b500 [ 42.196469][ T4021] x8 : b95b5cd9c334b500 x7 : 0000000000000001 x6 : 0000000000000001 [ 42.198580][ T4021] x5 : ffff80001fb16f18 x4 : ffff800014c40660 x3 : ffff8000085567f8 [ 42.200753][ T4021] x2 : 0000000000000001 x1 : 0000000100000000 x0 : 0000000000000026 [ 42.202958][ T4021] Call trace: [ 42.203778][ T4021] btrfs_run_delayed_refs+0x408/0x47c [ 42.205130][ T4021] btrfs_commit_transaction+0x1b8/0x30f0 [ 42.206554][ T4021] btrfs_ioctl_set_fslabel+0x2e8/0x39c [ 42.208020][ T4021] btrfs_ioctl+0x50c/0xa5c [ 42.209231][ T4021] __arm64_sys_ioctl+0x14c/0x1c8 [ 42.210518][ T4021] invoke_syscall+0x98/0x2b8 [ 42.211688][ T4021] el0_svc_common+0x138/0x258 [ 42.212899][ T4021] do_el0_svc+0x58/0x14c [ 42.213976][ T4021] el0_svc+0x7c/0x1f0 [ 42.215066][ T4021] el0t_64_sync_handler+0x84/0xe4 [ 42.216444][ T4021] el0t_64_sync+0x1a0/0x1a4 [ 42.217602][ T4021] irq event stamp: 86880 [ 42.218741][ T4021] hardirqs last enabled at (86879): [] __up_console_sem+0xb4/0x100 [ 42.221230][ T4021] hardirqs last disabled at (86880): [] el1_dbg+0x24/0x80 [ 42.223528][ T4021] softirqs last enabled at (86868): [] handle_softirqs+0xb88/0xdbc [ 42.225991][ T4021] softirqs last disabled at (86837): [] __irq_exit_rcu+0x268/0x4d8 [ 42.228377][ T4021] ---[ end trace fe84c1a861b679c8 ]--- [ 42.230194][ T4021] BTRFS: error (device loop0) in btrfs_run_delayed_refs:2158: errno=-12 Out of memory [ 42.232579][ T4021] BTRFS info (device loop0): forced readonly