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: 4895 at fs/btrfs/inode.c:6761 btrfs_add_link+0x6e8/0xa68 fs/btrfs/inode.c:6761
Modules linked in:
CPU: 1 PID: 4895 Comm: syz.0.17 Not tainted 5.15.184-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/07/2025
pstate: 60400005 (nZCv daif +PAN -UAO -TCO -DIT -SSBS BTYPE=--)
pc : btrfs_add_link+0x6e8/0xa68 fs/btrfs/inode.c:6761
lr : btrfs_add_link+0x6e8/0xa68 fs/btrfs/inode.c:6761
sp : ffff80001f6079e0
x29: ffff80001f607ae0 x28: ffff0000dcf124d0 x27: 0000000000000107
x26: 00000000fffffff4 x25: 0000000000000001 x24: dfff800000000000
x23: 0000000000000005 x22: 1fffe0001b9e24a5 x21: ffff700003ec0f44
x20: 00000000fffffff4 x19: ffff0000dcf12528 x18: 0000000000000001
x17: 0000000000000000 x16: ffff8000111a5644 x15: 00000000ffffffff
x14: 0000000000ff0100 x13: 0000000000000001 x12: 0000000000ff0100
x11: 0000000000000000 x10: 0000000000000000 x9 : 16628ac452346600
x8 : 16628ac452346600 x7 : 0000000000000001 x6 : 0000000000000001
x5 : ffff80001f6072d8 x4 : ffff80001422f280 x3 : ffff80000850383c
x2 : 0000000000000001 x1 : 0000000100000000 x0 : 0000000000000026
Call trace:
 btrfs_add_link+0x6e8/0xa68 fs/btrfs/inode.c:6761
 btrfs_add_nondir fs/btrfs/inode.c:6812 [inline]
 btrfs_link+0x3ac/0x6a4 fs/btrfs/inode.c:6994
 vfs_link+0x5b4/0x744 fs/namei.c:4557
 do_linkat+0x3dc/0x6f8 fs/namei.c:4628
 __do_sys_linkat fs/namei.c:4656 [inline]
 __se_sys_linkat fs/namei.c:4653 [inline]
 __arm64_sys_linkat+0xe4/0x100 fs/namei.c:4653
 __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: 81400
hardirqs last  enabled at (81399): [<ffff8000082f7654>] __up_console_sem+0xb4/0x100 kernel/printk/printk.c:257
hardirqs last disabled at (81400): [<ffff8000111a0f18>] el1_dbg+0x24/0x80 arch/arm64/kernel/entry-common.c:396
softirqs last  enabled at (81388): [<ffff80000819d0d8>] softirq_handle_end kernel/softirq.c:401 [inline]
softirqs last  enabled at (81388): [<ffff80000819d0d8>] handle_softirqs+0xa4c/0xbf0 kernel/softirq.c:586
softirqs last disabled at (81345): [<ffff80000819d6dc>] __do_softirq kernel/softirq.c:592 [inline]
softirqs last disabled at (81345): [<ffff80000819d6dc>] do_softirq_own_stack include/asm-generic/softirq_stack.h:10 [inline]
softirqs last disabled at (81345): [<ffff80000819d6dc>] invoke_softirq kernel/softirq.c:439 [inline]
softirqs last disabled at (81345): [<ffff80000819d6dc>] __irq_exit_rcu+0x240/0x440 kernel/softirq.c:641
---[ end trace 1ae2b8b8b3c07179 ]---
BTRFS: error (device loop0) in btrfs_add_link:6761: errno=-12 Out of memory
BTRFS info (device loop0): forced readonly