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
------------[ cut here ]------------
WARNING: CPU: 0 PID: 4455 at fs/btrfs/file.c:966 btrfs_drop_extents+0x1d88/0x21a4 fs/btrfs/file.c:966
Modules linked in:
CPU: 0 PID: 4455 Comm: syz-executor.0 Not tainted syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/30/2025
pstate: 62400005 (nZCv daif +PAN -UAO +TCO -DIT -SSBS BTYPE=--)
pc : btrfs_drop_extents+0x1d88/0x21a4 fs/btrfs/file.c:966
lr : btrfs_drop_extents+0x1d88/0x21a4 fs/btrfs/file.c:966
sp : ffff80001f8071c0
x29: ffff80001f807480 x28: 00000000fffffff4 x27: ffff0000d4d73930
x26: ffff0000cab3d880 x25: 0000000000011000 x24: dfff800000000000
x23: 0000000000011000 x22: ffff80001f807300 x21: 0000000000000107
x20: 1fffe0001bd78637 x19: ffff0000debc31b8 x18: 0000000000000001
x17: 0000000000000000 x16: ffff8000111c8944 x15: 00000000ffffffff
x14: 0000000000ff0100 x13: 0000000000000001 x12: 0000000000ff0100
x11: 0000000000000000 x10: 0000000000000000 x9 : abde5ca8385c5700
x8 : abde5ca8385c5700 x7 : 0000000000000001 x6 : 0000000000000001
x5 : ffff80001f806ab8 x4 : ffff80001425f420 x3 : ffff80000850471c
x2 : 0000000000000001 x1 : 0000000100000000 x0 : 0000000000000026
Call trace:
 btrfs_drop_extents+0x1d88/0x21a4 fs/btrfs/file.c:966
 btrfs_replace_file_extents+0x328/0x1290 fs/btrfs/file.c:2821
 insert_prealloc_file_extent fs/btrfs/inode.c:10414 [inline]
 __btrfs_prealloc_file_range+0x390/0xb88 fs/btrfs/inode.c:10482
 btrfs_prealloc_file_range+0x60/0x7c fs/btrfs/inode.c:10572
 btrfs_zero_range+0xc28/0xe94 fs/btrfs/file.c:3425
 btrfs_fallocate+0x8b0/0x1614 fs/btrfs/file.c:3540
 vfs_fallocate+0x4a4/0x5f4 fs/open.c:308
 ksys_fallocate fs/open.c:331 [inline]
 __do_sys_fallocate fs/open.c:339 [inline]
 __se_sys_fallocate fs/open.c:337 [inline]
 __arm64_sys_fallocate+0xc0/0x110 fs/open.c:337
 __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: 82890
hardirqs last  enabled at (82889): [<ffff8000082f8fd0>] __up_console_sem+0xb4/0x100 kernel/printk/printk.c:257
hardirqs last disabled at (82890): [<ffff8000111c41a4>] el1_dbg+0x24/0x80 arch/arm64/kernel/entry-common.c:396
softirqs last  enabled at (82866): [<ffff80000819e9f4>] softirq_handle_end kernel/softirq.c:419 [inline]
softirqs last  enabled at (82866): [<ffff80000819e9f4>] handle_softirqs+0xa4c/0xbf0 kernel/softirq.c:604
softirqs last disabled at (82661): [<ffff80000819eff8>] __do_softirq kernel/softirq.c:610 [inline]
softirqs last disabled at (82661): [<ffff80000819eff8>] do_softirq_own_stack include/asm-generic/softirq_stack.h:10 [inline]
softirqs last disabled at (82661): [<ffff80000819eff8>] invoke_softirq kernel/softirq.c:457 [inline]
softirqs last disabled at (82661): [<ffff80000819eff8>] __irq_exit_rcu+0x240/0x440 kernel/softirq.c:659
---[ end trace b8ea50274e5dfe32 ]---
BTRFS: error (device loop0) in btrfs_drop_extents:966: errno=-12 Out of memory
BTRFS info (device loop0): forced readonly
BTRFS: error (device loop0) in btrfs_replace_file_extents:2838: errno=-12 Out of memory