RBP: 00007fd72e6b4af8 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007fd72e8a3038 R14: 00007fd72e8a2fa0 R15: 00007ffd057328c8
 </TASK>
------------[ cut here ]------------
kernel BUG at fs/btrfs/extent-tree.c:3311!
invalid opcode: 0000 [#1] PREEMPT SMP KASAN
CPU: 1 PID: 4325 Comm: syz.0.10 Not tainted syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/07/2026
RIP: 0010:btrfs_free_tree_block+0xb71/0xb80 fs/btrfs/extent-tree.c:3311
Code: e9 02 f9 ff ff 44 89 e1 80 e1 07 38 c1 0f 8c 07 f9 ff ff be 08 00 00 00 4c 89 e7 e8 69 fb 78 fe e9 f5 f8 ff ff e8 6f b2 33 fe <0f> 0b 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 00 55 41 57 41 56 41 55
RSP: 0018:ffffc9000325f240 EFLAGS: 00010246
RAX: ffffffff83457b21 RBX: 1ffff11004273a52 RCX: 0000000000080000
RDX: ffffc90004124000 RSI: 000000000007ffff RDI: 0000000000080000
RBP: ffffc9000325f390 R08: ffffffff910471f7 R09: 1ffffffff2208e3e
R10: dffffc0000000000 R11: fffffbfff2208e3f R12: ffff88805dd33064
R13: ffff88802139d290 R14: 00000000fffffff4 R15: 0000000000000005
FS:  00007fd72c8736c0(0000) GS:ffff8880b8f00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fc849ce4008 CR3: 000000005e961000 CR4: 00000000003506e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <TASK>
 btrfs_force_cow_block+0xc4d/0x1760 fs/btrfs/ctree.c:480
 btrfs_cow_block+0x33e/0x7d0 fs/btrfs/ctree.c:598
 btrfs_search_slot+0x9d4/0x2090 fs/btrfs/ctree.c:-1
 btrfs_insert_empty_items+0x32c/0x3e0 fs/btrfs/ctree.c:4012
 btrfs_insert_empty_item fs/btrfs/ctree.h:2957 [inline]
 insert_with_overflow+0xb2/0x250 fs/btrfs/dir-item.c:33
 btrfs_insert_xattr_item+0x198/0x370 fs/btrfs/dir-item.c:77
 btrfs_setxattr+0x49a/0x970 fs/btrfs/xattr.c:132
 btrfs_setxattr_trans+0x107/0x370 fs/btrfs/xattr.c:260
 __vfs_setxattr+0x3d8/0x410 fs/xattr.c:182
 __vfs_setxattr_noperm+0x126/0x5e0 fs/xattr.c:216
 vfs_setxattr+0x167/0x2e0 fs/xattr.c:303
 do_setxattr fs/xattr.c:588 [inline]
 setxattr+0x2cb/0x360 fs/xattr.c:611
 path_setxattr+0x147/0x290 fs/xattr.c:630
 __do_sys_setxattr fs/xattr.c:646 [inline]
 __se_sys_setxattr fs/xattr.c:642 [inline]
 __x64_sys_setxattr+0xb7/0xd0 fs/xattr.c:642
 do_syscall_x64 arch/x86/entry/common.c:50 [inline]
 do_syscall_64+0x4c/0xa0 arch/x86/entry/common.c:80
 entry_SYSCALL_64_after_hwframe+0x66/0xd0
RIP: 0033:0x7fd72e61cb19
Code: ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 e8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007fd72c873028 EFLAGS: 00000246 ORIG_RAX: 00000000000000bc
RAX: ffffffffffffffda RBX: 00007fd72e8a2fa0 RCX: 00007fd72e61cb19
RDX: 0000000000000000 RSI: 000020000000cfc0 RDI: 000020000000cf80
RBP: 00007fd72e6b4af8 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007fd72e8a3038 R14: 00007fd72e8a2fa0 R15: 00007ffd057328c8
 </TASK>
Modules linked in:
---[ end trace 74b90b1fe61f1008 ]---
RIP: 0010:btrfs_free_tree_block+0xb71/0xb80 fs/btrfs/extent-tree.c:3311
Code: e9 02 f9 ff ff 44 89 e1 80 e1 07 38 c1 0f 8c 07 f9 ff ff be 08 00 00 00 4c 89 e7 e8 69 fb 78 fe e9 f5 f8 ff ff e8 6f b2 33 fe <0f> 0b 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 00 55 41 57 41 56 41 55
RSP: 0018:ffffc9000325f240 EFLAGS: 00010246

RAX: ffffffff83457b21 RBX: 1ffff11004273a52 RCX: 0000000000080000
RDX: ffffc90004124000 RSI: 000000000007ffff RDI: 0000000000080000
RBP: ffffc9000325f390 R08: ffffffff910471f7 R09: 1ffffffff2208e3e
R10: dffffc0000000000 R11: fffffbfff2208e3f R12: ffff88805dd33064
R13: ffff88802139d290 R14: 00000000fffffff4 R15: 0000000000000005
FS:  00007fd72c8736c0(0000) GS:ffff8880b8e00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000561846e25d51 CR3: 000000005e961000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400