el0_svc_common+0x138/0x258 arch/arm64/kernel/syscall.c:142
 do_el0_svc+0x58/0x13c arch/arm64/kernel/syscall.c:181
 el0_svc+0x78/0x1d0 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: 1 PID: 5173 at fs/btrfs/file.c:2983 btrfs_replace_file_extents+0xcc4/0x1238 fs/btrfs/file.c:2983
Modules linked in:
CPU: 1 PID: 5173 Comm: syz.0.18 Not tainted syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/26/2026
pstate: 62400005 (nZCv daif +PAN -UAO +TCO -DIT -SSBS BTYPE=--)
pc : btrfs_replace_file_extents+0xcc4/0x1238 fs/btrfs/file.c:2983
lr : btrfs_replace_file_extents+0xcc4/0x1238 fs/btrfs/file.c:2983
sp : ffff80001fe37640
x29: ffff80001fe37760 x28: dfff800000000000 x27: 0000000000000000
x26: ffff0000ca22a400 x25: ffff80001fe37940 x24: ffff0000ec893110
x23: ffff700003fc6ed8 x22: 00000000fffffff4 x21: 1fffe0001bdf9279
x20: ffff0000defc9370 x19: ffff0000defc93c8 x18: 0000000000000001
x17: 0000000000000000 x16: ffff800011255484 x15: 00000000ffffffff
x14: 0000000000000001 x13: 1fffe000341f49ab x12: 0000000000ff0100
x11: 0000000000000000 x10: 0000000000000000 x9 : ad026eadd9830c00
x8 : ad026eadd9830c00 x7 : 0000000000000001 x6 : 0000000000000001
x5 : ffff80001fe36f58 x4 : ffff80001436f3e0 x3 : ffff800008508fa8
x2 : 0000000000000001 x1 : 0000000100000000 x0 : 0000000000000026
Call trace:
 btrfs_replace_file_extents+0xcc4/0x1238 fs/btrfs/file.c:2983
 insert_prealloc_file_extent fs/btrfs/inode.c:10414 [inline]
 __btrfs_prealloc_file_range+0x3c8/0xbcc fs/btrfs/inode.c:10482
 btrfs_prealloc_file_range+0x60/0x7c fs/btrfs/inode.c:10572
 btrfs_fallocate+0x1354/0x1638 fs/btrfs/file.c:3638
 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+0x98/0x2b0 arch/arm64/kernel/syscall.c:52
 el0_svc_common+0x138/0x258 arch/arm64/kernel/syscall.c:142
 do_el0_svc+0x58/0x13c arch/arm64/kernel/syscall.c:181
 el0_svc+0x78/0x1d0 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: 79944
hardirqs last  enabled at (79943): [<ffff8000082fb500>] __up_console_sem+0xb4/0xfc kernel/printk/printk.c:257
hardirqs last disabled at (79944): [<ffff800011250e4c>] el1_dbg+0x24/0x80 arch/arm64/kernel/entry-common.c:396
softirqs last  enabled at (79924): [<ffff80000819fb84>] softirq_handle_end kernel/softirq.c:419 [inline]
softirqs last  enabled at (79924): [<ffff80000819fb84>] handle_softirqs+0xa40/0xbe4 kernel/softirq.c:604
softirqs last disabled at (79749): [<ffff8000081a0188>] __do_softirq kernel/softirq.c:610 [inline]
softirqs last disabled at (79749): [<ffff8000081a0188>] do_softirq_own_stack include/asm-generic/softirq_stack.h:10 [inline]
softirqs last disabled at (79749): [<ffff8000081a0188>] invoke_softirq kernel/softirq.c:457 [inline]
softirqs last disabled at (79749): [<ffff8000081a0188>] __irq_exit_rcu+0x240/0x43c kernel/softirq.c:659
---[ end trace 6fe0a6bfb8634ac2 ]---
BTRFS: error (device loop0) in btrfs_replace_file_extents:2983: errno=-12 Out of memory
BTRFS info (device loop0): forced readonly