__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
------------[ cut here ]------------
WARNING: CPU: 1 PID: 4786 at fs/btrfs/inode.c:6780 btrfs_add_link+0x728/0xac8 fs/btrfs/inode.c:6780
Modules linked in:
CPU: 1 PID: 4786 Comm: syz.0.15 Not tainted syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 08/07/2026
pstate: 62400005 (nZCv daif +PAN -UAO +TCO -DIT -SSBS BTYPE=--)
pc : btrfs_add_link+0x728/0xac8 fs/btrfs/inode.c:6780
lr : btrfs_add_link+0x728/0xac8 fs/btrfs/inode.c:6780
sp : ffff80001ffc75e0
x29: ffff80001ffc76e0 x28: ffff0000deb8e210 x27: 0000000000000108
x26: 00000000fffffff4 x25: 0000000000000000 x24: dfff800000000000
x23: 0000000000000014 x22: 1fffe0001bd71c4d x21: ffff700003ff8ec4
x20: 00000000fffffff4 x19: ffff0000deb8e268 x18: 0000000000000000
x17: 0000000000000000 x16: ffff80001135f958 x15: 0000000000000000
x14: 0000000000000001 x13: 1fffe000341d09ab x12: 0000000000000000
x11: ff80800008300a38 x10: 0000000000000000 x9 : d42c825cfe0fd300
x8 : d42c825cfe0fd300 x7 : 0000000000000001 x6 : 0000000000000001
x5 : ffff80001ffc6ef8 x4 : ffff80001447f520 x3 : ffff80000850fcd0
x2 : 0000000000000001 x1 : 0000000100000000 x0 : 0000000000000026
Call trace:
 btrfs_add_link+0x728/0xac8 fs/btrfs/inode.c:6780
 btrfs_add_nondir fs/btrfs/inode.c:6831 [inline]
 btrfs_create+0x3b8/0x50c fs/btrfs/inode.c:6953
 lookup_open fs/namei.c:3470 [inline]
 open_last_lookups fs/namei.c:3540 [inline]
 path_openat+0xdb8/0x2808 fs/namei.c:3747
 do_filp_open+0x188/0x370 fs/namei.c:3777
 do_sys_openat2+0x134/0x3fc 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+0x11c/0x150 fs/open.c:1282
 __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: 82456
hardirqs last  enabled at (82455): [<ffff8000082feda8>] __up_console_sem+0xb4/0xfc kernel/printk/printk.c:257
hardirqs last disabled at (82456): [<ffff80001135b320>] el1_dbg+0x24/0x80 arch/arm64/kernel/entry-common.c:396
softirqs last  enabled at (82436): [<ffff8000081a2b54>] softirq_handle_end kernel/softirq.c:419 [inline]
softirqs last  enabled at (82436): [<ffff8000081a2b54>] handle_softirqs+0xa70/0xc14 kernel/softirq.c:604
softirqs last disabled at (82379): [<ffff8000081a315c>] __do_softirq kernel/softirq.c:610 [inline]
softirqs last disabled at (82379): [<ffff8000081a315c>] do_softirq_own_stack include/asm-generic/softirq_stack.h:10 [inline]
softirqs last disabled at (82379): [<ffff8000081a315c>] invoke_softirq kernel/softirq.c:457 [inline]
softirqs last disabled at (82379): [<ffff8000081a315c>] __irq_exit_rcu+0x240/0x434 kernel/softirq.c:659
---[ end trace baaf035a50c56bde ]---
BTRFS: error (device loop0) in btrfs_add_link:6780: errno=-12 Out of memory
BTRFS info (device loop0): forced readonly