el0t_64_sync_handler+0xcc/0xe4 arch/arm64/kernel/entry-common.c:626
 el0t_64_sync+0x1a0/0x1a4 arch/arm64/kernel/entry.S:584
BTRFS error (device loop0): failed to run delayed ref for logical 5255168 num_bytes 4096 type 176 action 2 ref_mod 1: -12
------------[ cut here ]------------
WARNING: CPU: 1 PID: 4631 at fs/btrfs/extent-tree.c:2158 btrfs_run_delayed_refs+0x3f4/0x46c fs/btrfs/extent-tree.c:2158
Modules linked in:
CPU: 1 PID: 4631 Comm: syz-executor.0 Not tainted 5.15.182-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/19/2025
pstate: 60400005 (nZCv daif +PAN -UAO -TCO -DIT -SSBS BTYPE=--)
pc : btrfs_run_delayed_refs+0x3f4/0x46c fs/btrfs/extent-tree.c:2158
lr : btrfs_run_delayed_refs+0x3f4/0x46c fs/btrfs/extent-tree.c:2158
sp : ffff80001fb27530
x29: ffff80001fb27540 x28: ffff0000cdfcd000 x27: dfff800000000000
x26: ffff0000cdfcd024 x25: ffff0000c1a4c000 x24: 1fffe0001b9f40fd
x23: 1fffe0001b9f40fd x22: ffff0000dcfa07e8 x21: 00000000fffffff4
x20: 0000000000000051 x19: ffff0000dcfa0790 x18: 0000000000000001
x17: 0000000000000000 x16: ffff8000111a53fc x15: 00000000ffffffff
x14: 0000000000ff0100 x13: 0000000000000001 x12: 0000000000ff0100
x11: 0000000000000000 x10: 0000000000000000 x9 : 4ccfc52edcd55e00
x8 : 4ccfc52edcd55e00 x7 : 0000000000000001 x6 : 0000000000000001
x5 : ffff80001fb26e18 x4 : ffff80001422f280 x3 : ffff800008503828
x2 : 0000000000000001 x1 : 0000000100000000 x0 : 0000000000000026
Call trace:
 btrfs_run_delayed_refs+0x3f4/0x46c fs/btrfs/extent-tree.c:2158
 btrfs_commit_transaction+0x1b8/0x3044 fs/btrfs/transaction.c:2168
 btrfs_sync_fs+0x628/0xb2c fs/btrfs/super.c:1454
 sync_filesystem+0x1a0/0x218 fs/sync.c:66
 btrfs_remount+0x19c/0x12b8 fs/btrfs/super.c:1927
 legacy_reconfigure+0xf8/0x110 fs/fs_context.c:634
 reconfigure_super+0x1d4/0x6f4 fs/super.c:938
 do_remount fs/namespace.c:2669 [inline]
 path_mount+0xc80/0x1000 fs/namespace.c:3335
 do_mount fs/namespace.c:3356 [inline]
 __do_sys_mount fs/namespace.c:3564 [inline]
 __se_sys_mount fs/namespace.c:3541 [inline]
 __arm64_sys_mount+0x514/0x5e4 fs/namespace.c:3541
 __invoke_syscall arch/arm64/kernel/syscall.c:38 [inline]
 invoke_syscall+0x98/0x2b8 arch/arm64/kernel/syscall.c:52
 el0_svc_common+0x138/0x258 arch/arm64/kernel/syscall.c:142
 do_el0_svc+0x58/0x14c arch/arm64/kernel/syscall.c:181
 el0_svc+0x78/0x1e0 arch/arm64/kernel/entry-common.c:608
 el0t_64_sync_handler+0xcc/0xe4 arch/arm64/kernel/entry-common.c:626
 el0t_64_sync+0x1a0/0x1a4 arch/arm64/kernel/entry.S:584
irq event stamp: 83096
hardirqs last  enabled at (83095): [<ffff8000082f7640>] __up_console_sem+0xb4/0x100 kernel/printk/printk.c:257
hardirqs last disabled at (83096): [<ffff8000111a0cd0>] el1_dbg+0x24/0x80 arch/arm64/kernel/entry-common.c:396
softirqs last  enabled at (83060): [<ffff80000819d0d8>] softirq_handle_end kernel/softirq.c:401 [inline]
softirqs last  enabled at (83060): [<ffff80000819d0d8>] handle_softirqs+0xa4c/0xbf0 kernel/softirq.c:586
softirqs last disabled at (83045): [<ffff80000819d6dc>] __do_softirq kernel/softirq.c:592 [inline]
softirqs last disabled at (83045): [<ffff80000819d6dc>] do_softirq_own_stack include/asm-generic/softirq_stack.h:10 [inline]
softirqs last disabled at (83045): [<ffff80000819d6dc>] invoke_softirq kernel/softirq.c:439 [inline]
softirqs last disabled at (83045): [<ffff80000819d6dc>] __irq_exit_rcu+0x240/0x440 kernel/softirq.c:641
---[ end trace 66d9a2d26d926f9a ]---
BTRFS: error (device loop0) in btrfs_run_delayed_refs:2158: errno=-12 Out of memory
BTRFS info (device loop0): forced readonly
BTRFS error (device loop0): Remounting read-write after error is not allowed