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: 4876 at fs/btrfs/inode.c:4167 __btrfs_unlink_inode+0x908/0xb00 fs/btrfs/inode.c:4167
Modules linked in:
CPU: 1 PID: 4876 Comm: syz.0.15 Not tainted 5.15.181-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_unlink_inode+0x908/0xb00 fs/btrfs/inode.c:4167
lr : __btrfs_unlink_inode+0x908/0xb00 fs/btrfs/inode.c:4167
sp : ffff80001bf17a60
x29: ffff80001bf17b10 x28: ffff0000e62d8000 x27: ffff0000eb514010
x26: 0000000000000100 x25: 00000000fffffff4 x24: ffff0000caac3e70
x23: 1ffff000037e2f54 x22: dfff800000000000 x21: ffff0000e12793a0
x20: ffff0000dde4a108 x19: 1fffe0001bbc9421 x18: 0000000000000001
x17: 0000000000000000 x16: ffff8000111a3970 x15: 00000000ffffffff
x14: 0000000000ff0100 x13: 0000000000000001 x12: 0000000000ff0100
x11: 0000000000000000 x10: 0000000000000000 x9 : 97daa8c0d5942500
x8 : 97daa8c0d5942500 x7 : 0000000000000001 x6 : 0000000000000001
x5 : ffff80001bf17358 x4 : ffff80001422f280 x3 : ffff800008503848
x2 : 0000000000000001 x1 : 0000000100000000 x0 : 0000000000000026
Call trace:
 __btrfs_unlink_inode+0x908/0xb00 fs/btrfs/inode.c:4167
 btrfs_unlink_inode fs/btrfs/inode.c:4216 [inline]
 btrfs_unlink+0x108/0x258 fs/btrfs/inode.c:4259
 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: 83014
hardirqs last  enabled at (83013): [<ffff8000082f7640>] __up_console_sem+0xb4/0x100 kernel/printk/printk.c:257
hardirqs last disabled at (83014): [<ffff80001119f244>] el1_dbg+0x24/0x80 arch/arm64/kernel/entry-common.c:396
softirqs last  enabled at (83004): [<ffff80000819d0d8>] softirq_handle_end kernel/softirq.c:401 [inline]
softirqs last  enabled at (83004): [<ffff80000819d0d8>] handle_softirqs+0xa4c/0xbf0 kernel/softirq.c:586
softirqs last disabled at (82993): [<ffff80000819d6dc>] __do_softirq kernel/softirq.c:592 [inline]
softirqs last disabled at (82993): [<ffff80000819d6dc>] do_softirq_own_stack include/asm-generic/softirq_stack.h:10 [inline]
softirqs last disabled at (82993): [<ffff80000819d6dc>] invoke_softirq kernel/softirq.c:439 [inline]
softirqs last disabled at (82993): [<ffff80000819d6dc>] __irq_exit_rcu+0x240/0x440 kernel/softirq.c:641
---[ end trace 8362ae1210de3d7e ]---
BTRFS: error (device loop0) in __btrfs_unlink_inode:4167: errno=-12 Out of memory
BTRFS info (device loop0): forced readonly