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: 4996 at fs/btrfs/inode.c:6776 btrfs_add_link+0x718/0xa9c fs/btrfs/inode.c:6776
Modules linked in:
CPU: 1 PID: 4996 Comm: syz.0.18 Not tainted syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/18/2026
pstate: 62400005 (nZCv daif +PAN -UAO +TCO -DIT -SSBS BTYPE=--)
pc : btrfs_add_link+0x718/0xa9c fs/btrfs/inode.c:6776
lr : btrfs_add_link+0x718/0xa9c fs/btrfs/inode.c:6776
sp : ffff80001ff079e0
x29: ffff80001ff07ae0 x28: ffff0000de1e68f0 x27: 0000000000000107
x26: 00000000fffffff4 x25: 0000000000000001 x24: dfff800000000000
x23: 0000000000000005 x22: 1fffe0001bc3cd29 x21: ffff700003fe0f44
x20: 00000000fffffff4 x19: ffff0000de1e6948 x18: 0000000000000001
x17: 0000000000000000 x16: ffff80001125f77c x15: 00000000ffffffff
x14: 0000000000000001 x13: 1fffe000341f47ab x12: 0000000000ff0100
x11: 0000000000000000 x10: 0000000000000000 x9 : 14d9a0c67ba91a00
x8 : 14d9a0c67ba91a00 x7 : 0000000000000001 x6 : 0000000000000001
x5 : ffff80001ff072f8 x4 : ffff80001437f3e0 x3 : ffff80000850932c
x2 : 0000000000000001 x1 : 0000000100000000 x0 : 0000000000000026
Call trace:
 btrfs_add_link+0x718/0xa9c fs/btrfs/inode.c:6776
 btrfs_add_nondir fs/btrfs/inode.c:6827 [inline]
 btrfs_link+0x3a4/0x694 fs/btrfs/inode.c:7009
 vfs_link+0x5b4/0x744 fs/namei.c:4565
 do_linkat+0x258/0x750 fs/namei.c:4636
 __do_sys_linkat fs/namei.c:4664 [inline]
 __se_sys_linkat fs/namei.c:4661 [inline]
 __arm64_sys_linkat+0xe4/0x100 fs/namei.c:4661
 __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: 81008
hardirqs last  enabled at (81007): [<ffff8000082fb630>] __up_console_sem+0xb4/0xfc kernel/printk/printk.c:257
hardirqs last disabled at (81008): [<ffff80001125b144>] el1_dbg+0x24/0x80 arch/arm64/kernel/entry-common.c:396
softirqs last  enabled at (80988): [<ffff80000819fc08>] softirq_handle_end kernel/softirq.c:419 [inline]
softirqs last  enabled at (80988): [<ffff80000819fc08>] handle_softirqs+0xa40/0xbe4 kernel/softirq.c:604
softirqs last disabled at (80953): [<ffff8000081a020c>] __do_softirq kernel/softirq.c:610 [inline]
softirqs last disabled at (80953): [<ffff8000081a020c>] do_softirq_own_stack include/asm-generic/softirq_stack.h:10 [inline]
softirqs last disabled at (80953): [<ffff8000081a020c>] invoke_softirq kernel/softirq.c:457 [inline]
softirqs last disabled at (80953): [<ffff8000081a020c>] __irq_exit_rcu+0x240/0x43c kernel/softirq.c:659
---[ end trace 4bff21fd228f5f16 ]---
BTRFS: error (device loop0) in btrfs_add_link:6776: errno=-12 Out of memory
BTRFS info (device loop0): forced readonly