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: 4909 at fs/btrfs/inode.c:6776 btrfs_add_link+0x6e8/0xa68 fs/btrfs/inode.c:6776
Modules linked in:
CPU: 1 PID: 4909 Comm: syz.0.15 Not tainted syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/03/2025
pstate: 62400005 (nZCv daif +PAN -UAO +TCO -DIT -SSBS BTYPE=--)
pc : btrfs_add_link+0x6e8/0xa68 fs/btrfs/inode.c:6776
lr : btrfs_add_link+0x6e8/0xa68 fs/btrfs/inode.c:6776
sp : ffff80001f817580
x29: ffff80001f817680 x28: ffff0000def282c0 x27: 0000000000000108
x26: 00000000fffffff4 x25: 0000000000000000 x24: dfff800000000000
x23: 0000000000000014 x22: 1fffe0001bde5063 x21: ffff700003f02eb8
x20: 00000000fffffff4 x19: ffff0000def28318 x18: 0000000000000001
x17: 0000000000000000 x16: ffff800011169180 x15: 00000000ffffffff
x14: 0000000000ff0100 x13: 0000000000000001 x12: 0000000000ff0100
x11: 0000000000000000 x10: 0000000000000000 x9 : ea922e7956453300
x8 : ea922e7956453300 x7 : 0000000000000001 x6 : 0000000000000001
x5 : ffff80001f816e78 x4 : ffff8000141ff5a0 x3 : ffff8000085043fc
x2 : 0000000000000001 x1 : 0000000100000000 x0 : 0000000000000026
Call trace:
 btrfs_add_link+0x6e8/0xa68 fs/btrfs/inode.c:6776
 btrfs_add_nondir fs/btrfs/inode.c:6827 [inline]
 btrfs_create+0x45c/0x508 fs/btrfs/inode.c:6949
 lookup_open fs/namei.c:3470 [inline]
 open_last_lookups fs/namei.c:3540 [inline]
 path_openat+0x1144/0x26e4 fs/namei.c:3747
 do_filp_open+0x164/0x330 fs/namei.c:3777
 do_sys_openat2+0x128/0x3d8 fs/open.c:1255
 do_sys_open fs/open.c:1271 [inline]
 __do_sys_openat fs/open.c:1287 [inline]
 __se_sys_openat fs/open.c:1282 [inline]
 __arm64_sys_openat+0x120/0x154 fs/open.c:1282
 __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: 82812
hardirqs last  enabled at (82811): [<ffff8000082f8fcc>] __up_console_sem+0xb4/0x100 kernel/printk/printk.c:257
hardirqs last disabled at (82812): [<ffff8000111649e0>] el1_dbg+0x24/0x80 arch/arm64/kernel/entry-common.c:396
softirqs last  enabled at (82792): [<ffff80000819e9f4>] softirq_handle_end kernel/softirq.c:419 [inline]
softirqs last  enabled at (82792): [<ffff80000819e9f4>] handle_softirqs+0xa4c/0xbf0 kernel/softirq.c:604
softirqs last disabled at (82739): [<ffff80000819eff8>] __do_softirq kernel/softirq.c:610 [inline]
softirqs last disabled at (82739): [<ffff80000819eff8>] do_softirq_own_stack include/asm-generic/softirq_stack.h:10 [inline]
softirqs last disabled at (82739): [<ffff80000819eff8>] invoke_softirq kernel/softirq.c:457 [inline]
softirqs last disabled at (82739): [<ffff80000819eff8>] __irq_exit_rcu+0x240/0x440 kernel/softirq.c:659
---[ end trace e33b5072ba1647ba ]---
BTRFS: error (device loop0) in btrfs_add_link:6776: errno=-12 Out of memory
BTRFS info (device loop0): forced readonly