el0_svc_common+0x13c/0x258 arch/arm64/kernel/syscall.c:142
 do_el0_svc+0x5c/0x140 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: 0 PID: 4850 at fs/btrfs/inode.c:4182 __btrfs_unlink_inode+0x8d8/0xab8 fs/btrfs/inode.c:4182
Modules linked in:
CPU: 0 PID: 4850 Comm: syz.0.15 Not tainted syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/02/2026
pstate: 62400005 (nZCv daif +PAN -UAO +TCO -DIT -SSBS BTYPE=--)
pc : __btrfs_unlink_inode+0x8d8/0xab8 fs/btrfs/inode.c:4182
lr : __btrfs_unlink_inode+0x8d8/0xab8 fs/btrfs/inode.c:4182
sp : ffff800020087a80
x29: ffff800020087b10 x28: 0000000000000104 x27: ffff0000ecdfc010
x26: 0000000000000100 x25: 00000000fffffff4 x24: ffff0000c1f7abb0
x23: ffff0000deb660b0 x22: ffff0000ed586000 x21: 1fffe0001bd6cc21
x20: ffff0000deb66108 x19: dfff800000000000 x18: 0000000000000000
x17: 0000000000000000 x16: ffff80001134e478 x15: 0000000000000000
x14: 0000000000000001 x13: 1fffe000341cebab x12: 0000000000000000
x11: ff8080000830061c x10: 0000000000000000 x9 : 37413a894cfd8e00
x8 : 37413a894cfd8e00 x7 : 0000000000000001 x6 : 0000000000000001
x5 : ffff800020087398 x4 : ffff80001446f500 x3 : ffff80000850f688
x2 : 0000000000000001 x1 : 0000000100000000 x0 : 0000000000000026
Call trace:
 __btrfs_unlink_inode+0x8d8/0xab8 fs/btrfs/inode.c:4182
 btrfs_unlink_inode fs/btrfs/inode.c:4231 [inline]
 btrfs_unlink+0x10c/0x25c fs/btrfs/inode.c:4274
 vfs_unlink+0x2e0/0x4f4 fs/namei.c:4288
 do_unlinkat+0x318/0x624 fs/namei.c:4356
 __do_sys_unlinkat fs/namei.c:4399 [inline]
 __se_sys_unlinkat fs/namei.c:4392 [inline]
 __arm64_sys_unlinkat+0xe0/0xfc fs/namei.c:4392
 __invoke_syscall arch/arm64/kernel/syscall.c:38 [inline]
 invoke_syscall+0x98/0x28c arch/arm64/kernel/syscall.c:52
 el0_svc_common+0x13c/0x258 arch/arm64/kernel/syscall.c:142
 do_el0_svc+0x5c/0x140 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: 80460
hardirqs last  enabled at (80459): [<ffff8000082fe98c>] __up_console_sem+0xb4/0xfc kernel/printk/printk.c:257
hardirqs last disabled at (80460): [<ffff800011349e40>] el1_dbg+0x24/0x80 arch/arm64/kernel/entry-common.c:396
softirqs last  enabled at (80448): [<ffff8000081a2b70>] softirq_handle_end kernel/softirq.c:419 [inline]
softirqs last  enabled at (80448): [<ffff8000081a2b70>] handle_softirqs+0xa70/0xc14 kernel/softirq.c:604
softirqs last disabled at (80441): [<ffff8000081a3178>] __do_softirq kernel/softirq.c:610 [inline]
softirqs last disabled at (80441): [<ffff8000081a3178>] do_softirq_own_stack include/asm-generic/softirq_stack.h:10 [inline]
softirqs last disabled at (80441): [<ffff8000081a3178>] invoke_softirq kernel/softirq.c:457 [inline]
softirqs last disabled at (80441): [<ffff8000081a3178>] __irq_exit_rcu+0x240/0x434 kernel/softirq.c:659
---[ end trace 149d0c2dff8b1a7a ]---
BTRFS: error (device loop0) in __btrfs_unlink_inode:4182: errno=-12 Out of memory
BTRFS info (device loop0): forced readonly