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: 1 PID: 4889 at fs/btrfs/inode.c:4182 __btrfs_unlink_inode+0x908/0xb00 fs/btrfs/inode.c:4182
Modules linked in:
CPU: 1 PID: 4889 Comm: syz.0.15 Not tainted 5.15.188-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/07/2025
pstate: 60400005 (nZCv daif +PAN -UAO -TCO -DIT -SSBS BTYPE=--)
pc : __btrfs_unlink_inode+0x908/0xb00 fs/btrfs/inode.c:4182
lr : __btrfs_unlink_inode+0x908/0xb00 fs/btrfs/inode.c:4182
sp : ffff80001f6b7a60
x29: ffff80001f6b7b10 x28: ffff0000e8a5a000 x27: ffff0000e2788010
x26: 0000000000000100 x25: 00000000fffffff4 x24: ffff0000dcfe0e70
x23: 1ffff00003ed6f54 x22: dfff800000000000 x21: ffff0000ea1709d0
x20: ffff0000de7a7108 x19: 1fffe0001bcf4e21 x18: 0000000000000001
x17: 0000000000000000 x16: ffff8000111d162c x15: 00000000ffffffff
x14: 0000000000ff0100 x13: 0000000000000001 x12: 0000000000ff0100
x11: 0000000000000000 x10: 0000000000000000 x9 : a57cdd9103010f00
x8 : a57cdd9103010f00 x7 : 0000000000000001 x6 : 0000000000000001
x5 : ffff80001f6b7358 x4 : ffff80001425f400 x3 : ffff8000085051a4
x2 : 0000000000000001 x1 : 0000000100000000 x0 : 0000000000000026
Call trace:
 __btrfs_unlink_inode+0x908/0xb00 fs/btrfs/inode.c:4182
 btrfs_unlink_inode fs/btrfs/inode.c:4231 [inline]
 btrfs_unlink+0x108/0x258 fs/btrfs/inode.c:4274
 vfs_unlink+0x2e0/0x4f4 fs/namei.c:4280
 do_unlinkat+0x31c/0x600 fs/namei.c:4348
 __do_sys_unlinkat fs/namei.c:4391 [inline]
 __se_sys_unlinkat fs/namei.c:4384 [inline]
 __arm64_sys_unlinkat+0xe0/0xfc fs/namei.c:4384
 __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: 81118
hardirqs last  enabled at (81117): [<ffff8000082f8f64>] __up_console_sem+0xb4/0x100 kernel/printk/printk.c:257
hardirqs last disabled at (81118): [<ffff8000111cce8c>] el1_dbg+0x24/0x80 arch/arm64/kernel/entry-common.c:396
softirqs last  enabled at (81108): [<ffff80000819e9e8>] softirq_handle_end kernel/softirq.c:419 [inline]
softirqs last  enabled at (81108): [<ffff80000819e9e8>] handle_softirqs+0xa4c/0xbf0 kernel/softirq.c:604
softirqs last disabled at (81099): [<ffff80000819efec>] __do_softirq kernel/softirq.c:610 [inline]
softirqs last disabled at (81099): [<ffff80000819efec>] do_softirq_own_stack include/asm-generic/softirq_stack.h:10 [inline]
softirqs last disabled at (81099): [<ffff80000819efec>] invoke_softirq kernel/softirq.c:457 [inline]
softirqs last disabled at (81099): [<ffff80000819efec>] __irq_exit_rcu+0x240/0x440 kernel/softirq.c:659
---[ end trace 3f261a58dfc76dda ]---
BTRFS: error (device loop0) in __btrfs_unlink_inode:4182: errno=-12 Out of memory
BTRFS info (device loop0): forced readonly