el0_svc_common+0x138/0x258 arch/arm64/kernel/syscall.c:140
 do_el0_svc+0x58/0x130 arch/arm64/kernel/syscall.c:204
 el0_svc+0x58/0x128 arch/arm64/kernel/entry-common.c:637
 el0t_64_sync_handler+0x84/0xf0 arch/arm64/kernel/entry-common.c:655
 el0t_64_sync+0x18c/0x190 arch/arm64/kernel/entry.S:585
------------[ cut here ]------------
kernel BUG at fs/btrfs/extent-tree.c:3299!
Internal error: Oops - BUG: 00000000f2000800 [#1] PREEMPT SMP
Modules linked in:
CPU: 0 PID: 7488 Comm: syz.2.816 Not tainted syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/26/2026
pstate: 82400005 (Nzcv daif +PAN -UAO +TCO -DIT -SSBS BTYPE=--)
pc : btrfs_free_tree_block+0xa50/0xa84 fs/btrfs/extent-tree.c:3299
lr : btrfs_free_tree_block+0xa50/0xa84 fs/btrfs/extent-tree.c:3299
sp : ffff800023277160
x29: ffff800023277260 x28: ffff70000464ee34 x27: ffff000000000005
x26: ffff8000232771c0 x25: 00000000fffffff4 x24: ffff0000e89b6120
x23: 0000000000000001 x22: ffff000000000100 x21: ffff0000e89b6008
x20: dfff800000000000 x19: ffff0000e89b6000 x18: 0000000000000000
x17: 0000000000000000 x16: ffff8000082d91a4 x15: 0000000000000000
x14: 0000000000000001 x13: 1ffff00002a98f96 x12: 0000000000ff0100
x11: ff00800009f372f8 x10: 0000000000000000 x9 : ffff800009f372f8
x8 : ffff0000d132b780 x7 : 0000000000000001 x6 : 0000000000000001
x5 : ffff800023276838 x4 : 00000000ffffffff x3 : 0000000000000c40
x2 : ffff0000d6da7380 x1 : 00000000fffffff4 x0 : 0000000000000000
Call trace:
 btrfs_free_tree_block+0xa50/0xa84 fs/btrfs/extent-tree.c:3299
 btrfs_force_cow_block+0xb30/0x188c fs/btrfs/ctree.c:505
 btrfs_cow_block+0x2d0/0x708 fs/btrfs/ctree.c:623
 btrfs_search_slot+0xa50/0x237c fs/btrfs/ctree.c:-1
 btrfs_lookup_match_dir fs/btrfs/dir-item.c:181 [inline]
 btrfs_lookup_xattr+0xfc/0x1d4 fs/btrfs/dir-item.c:363
 btrfs_setxattr+0x200/0x6fc fs/btrfs/xattr.c:100
 btrfs_set_prop+0x1b0/0x2ec fs/btrfs/props.c:113
 btrfs_fileattr_set+0x5c8/0xa14 fs/btrfs/ioctl.c:364
 vfs_fileattr_set+0x67c/0x90c fs/ioctl.c:696
 ioctl_setflags fs/ioctl.c:728 [inline]
 do_vfs_ioctl+0x1a78/0x2100 fs/ioctl.c:839
 __do_sys_ioctl fs/ioctl.c:868 [inline]
 __se_sys_ioctl fs/ioctl.c:856 [inline]
 __arm64_sys_ioctl+0xe4/0x1c8 fs/ioctl.c:856
 __invoke_syscall arch/arm64/kernel/syscall.c:38 [inline]
 invoke_syscall+0x98/0x2b4 arch/arm64/kernel/syscall.c:52
 el0_svc_common+0x138/0x258 arch/arm64/kernel/syscall.c:140
 do_el0_svc+0x58/0x130 arch/arm64/kernel/syscall.c:204
 el0_svc+0x58/0x128 arch/arm64/kernel/entry-common.c:637
 el0t_64_sync_handler+0x84/0xf0 arch/arm64/kernel/entry-common.c:655
 el0t_64_sync+0x18c/0x190 arch/arm64/kernel/entry.S:585
Code: 17fffe90 9795cff3 d4210000 9795cff1 (d4210000) 
---[ end trace 0000000000000000 ]---