------------[ cut here ]------------
kernel BUG at fs/btrfs/extent-tree.c:3482!
Internal error: Oops - BUG: 00000000f2000800 [#1] PREEMPT SMP
Modules linked in:
CPU: 1 PID: 9364 Comm: syz-executor.2 Not tainted 6.9.0-rc6-syzkaller-g78186bd77b47 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/27/2024
pstate: 80400005 (Nzcv daif +PAN -UAO -TCO -DIT -SSBS BTYPE=--)
pc : btrfs_free_tree_block+0xc20/0xc2c fs/btrfs/extent-tree.c:3482
lr : btrfs_free_tree_block+0xc20/0xc2c fs/btrfs/extent-tree.c:3482
sp : ffff80009a4870a0
x29: ffff80009a4871a0 x28: ffff700013490e1c x27: dfff800000000000
x26: ffff0000f4f6c000 x25: ffff0000d58ee064 x24: 00000000fffffff4
x23: 0000000000000001 x22: 0000000000000005 x21: ffff80008e839000
x20: ffff0000efc18940 x19: ffff0000f4c441e0 x18: 0000000000000008
x17: 0000000000000000 x16: ffff80008ae8863c x15: 0000000000000001
x14: 1ffff00011e2e30a x13: 0000000000000000 x12: 0000000000000000
x11: ffff700011e2e30b x10: 0000000000ff0100 x9 : 0000000000000000
x8 : ffff0000c7ad8000 x7 : 0000000000000001 x6 : 0000000000000001
x5 : ffff80009a486458 x4 : 00000000ffffffff x3 : 0000000000000c40
x2 : ffff0000d8207780 x1 : 00000000fffffff4 x0 : 0000000000000000
Call trace:
 btrfs_free_tree_block+0xc20/0xc2c fs/btrfs/extent-tree.c:3482
 btrfs_force_cow_block+0xea8/0x1a58 fs/btrfs/ctree.c:626
 btrfs_cow_block+0x318/0xa3c fs/btrfs/ctree.c:749
 btrfs_search_slot+0xba0/0x2a00
 btrfs_insert_empty_items+0xa4/0x17c fs/btrfs/ctree.c:4298
 btrfs_insert_empty_item fs/btrfs/ctree.h:650 [inline]
 btrfs_insert_inode_ref+0x21c/0xbec fs/btrfs/inode-item.c:330
 btrfs_add_link+0x1c0/0xa68 fs/btrfs/inode.c:6507
 btrfs_link+0x32c/0x6c8 fs/btrfs/inode.c:6680
 vfs_link+0x3e8/0x560 fs/namei.c:4605
 do_linkat+0x2e0/0x620 fs/namei.c:4676
 __do_sys_linkat fs/namei.c:4704 [inline]
 __se_sys_linkat fs/namei.c:4701 [inline]
 __arm64_sys_linkat+0xe4/0x100 fs/namei.c:4701
 __invoke_syscall arch/arm64/kernel/syscall.c:34 [inline]
 invoke_syscall+0x98/0x2b8 arch/arm64/kernel/syscall.c:48
 el0_svc_common+0x130/0x23c arch/arm64/kernel/syscall.c:133
 do_el0_svc+0x48/0x58 arch/arm64/kernel/syscall.c:152
 el0_svc+0x54/0x168 arch/arm64/kernel/entry-common.c:712
 el0t_64_sync_handler+0x84/0xfc arch/arm64/kernel/entry-common.c:730
 el0t_64_sync+0x190/0x194 arch/arm64/kernel/entry.S:598
Code: d4210000 978ebc93 d4210000 978ebc91 (d4210000) 
---[ end trace 0000000000000000 ]---