R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000002
R13: 000000000000000b R14: 00007ff69339bf80 R15: 00007ffc1542b648
 </TASK>
------------[ cut here ]------------
kernel BUG at fs/btrfs/extent-tree.c:3252!
invalid opcode: 0000 [#1] PREEMPT SMP KASAN
CPU: 2 PID: 10425 Comm: syz-executor.2 Not tainted 6.5.0-rc6-syzkaller-00253-g9e6c269de404 #0
Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.2-debian-1.16.2-1 04/01/2014
RIP: 0010:btrfs_free_tree_block+0x788/0xb50 fs/btrfs/extent-tree.c:3252
Code: e8 fd 5d 02 fe 31 ff 89 c5 89 c6 e8 02 98 19 fe 40 84 ed 0f 85 e5 fb ff ff e8 c4 9c 19 fe 0f 0b e9 d9 fb ff ff e8 b8 9c 19 fe <0f> 0b e8 b1 9c 19 fe 49 8d 7d 20 48 b8 00 00 00 00 00 fc ff df 48
RSP: 0018:ffffc90020b1f6c8 EFLAGS: 00010287
RAX: 000000000002de1d RBX: ffff88802d8a6d28 RCX: ffffc90005f41000
RDX: 0000000000040000 RSI: ffffffff836b8408 RDI: 0000000000000005
RBP: 0000000000000005 R08: 0000000000000005 R09: 0000000000000000
R10: 00000000fffffff4 R11: 6637303030302052 R12: 1ffff92004163ede
R13: ffff8880666f0d20 R14: 0000000000000001 R15: ffff88802d8a6d30
FS:  00007ff69400a6c0(0000) GS:ffff88806b800000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007ff6932d71e5 CR3: 000000010dbe7000 CR4: 0000000000350ee0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <TASK>
 __btrfs_cow_block+0xfb3/0x18e0 fs/btrfs/ctree.c:601
 btrfs_cow_block+0x2f1/0x820 fs/btrfs/ctree.c:712
 btrfs_search_slot+0x12a0/0x30e0 fs/btrfs/ctree.c:2194
 btrfs_lookup_match_dir fs/btrfs/dir-item.c:187 [inline]
 btrfs_lookup_dir_item+0x16a/0x2b0 fs/btrfs/dir-item.c:225
 __btrfs_unlink_inode+0x167/0xa10 fs/btrfs/inode.c:4217
 btrfs_unlink_inode fs/btrfs/inode.c:4306 [inline]
 btrfs_unlink+0x1f4/0x3a0 fs/btrfs/inode.c:4352
 vfs_unlink+0x2f1/0x900 fs/namei.c:4329
 do_unlinkat+0x3da/0x6d0 fs/namei.c:4395
 __do_sys_unlink fs/namei.c:4443 [inline]
 __se_sys_unlink fs/namei.c:4441 [inline]
 __x64_sys_unlink+0xc8/0x110 fs/namei.c:4441
 do_syscall_x64 arch/x86/entry/common.c:50 [inline]
 do_syscall_64+0x38/0xb0 arch/x86/entry/common.c:80
 entry_SYSCALL_64_after_hwframe+0x63/0xcd
RIP: 0033:0x7ff69327cae9
Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 e1 20 00 00 90 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 b0 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007ff69400a0c8 EFLAGS: 00000246 ORIG_RAX: 0000000000000057
RAX: ffffffffffffffda RBX: 00007ff69339bf80 RCX: 00007ff69327cae9
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 00000000200000c0
RBP: 00007ff69400a120 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000002
R13: 000000000000000b R14: 00007ff69339bf80 R15: 00007ffc1542b648
 </TASK>
Modules linked in:
---[ end trace 0000000000000000 ]---
RIP: 0010:btrfs_free_tree_block+0x788/0xb50 fs/btrfs/extent-tree.c:3252
Code: e8 fd 5d 02 fe 31 ff 89 c5 89 c6 e8 02 98 19 fe 40 84 ed 0f 85 e5 fb ff ff e8 c4 9c 19 fe 0f 0b e9 d9 fb ff ff e8 b8 9c 19 fe <0f> 0b e8 b1 9c 19 fe 49 8d 7d 20 48 b8 00 00 00 00 00 fc ff df 48
RSP: 0018:ffffc90020b1f6c8 EFLAGS: 00010287
RAX: 000000000002de1d RBX: ffff88802d8a6d28 RCX: ffffc90005f41000
RDX: 0000000000040000 RSI: ffffffff836b8408 RDI: 0000000000000005
RBP: 0000000000000005 R08: 0000000000000005 R09: 0000000000000000
R10: 00000000fffffff4 R11: 6637303030302052 R12: 1ffff92004163ede
R13: ffff8880666f0d20 R14: 0000000000000001 R15: ffff88802d8a6d30
FS:  00007ff69400a6c0(0000) GS:ffff88806b800000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007ff6932d71e5 CR3: 000000010dbe7000 CR4: 0000000000350ee0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400