ida_free called for id=50 which is not allocated.
WARNING: CPU: 1 PID: 6820 at lib/idr.c:525 ida_free+0x370/0x420 lib/idr.c:525
Modules linked in:
CPU: 1 PID: 6820 Comm: syz-executor.0 Not tainted 6.8.0-rc7-syzkaller-g3aaa8ce7a335 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/25/2024
RIP: 0010:ida_free+0x370/0x420 lib/idr.c:525
Code: 10 42 80 3c 28 00 74 05 e8 cd 38 9b f6 48 8b 7c 24 40 4c 89 fe e8 b0 89 17 00 90 48 c7 c7 00 cf c5 8c 89 de e8 21 23 fd f5 90 <0f> 0b 90 90 eb 3d e8 f5 18 39 f6 49 bd 00 00 00 00 00 fc ff df 4d
RSP: 0018:ffffc90009147300 EFLAGS: 00010246
RAX: b5b71ee4fec1ea00 RBX: 0000000000000032 RCX: ffff88807d621dc0
RDX: 0000000000000000 RSI: 0000000000000001 RDI: 0000000000000000
RBP: ffffc900091473f0 R08: ffffffff81577bb2 R09: 1ffff92001228db4
R10: dffffc0000000000 R11: fffff52001228db5 R12: 0000000000000246
R13: dffffc0000000000 R14: ffffffff8e256c80 R15: 0000000000000246
FS:  00007fc5525416c0(0000) GS:ffff8880b9500000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f0fc20628e5 CR3: 000000007c9de000 CR4: 0000000000350ef0
Call Trace:
 <TASK>
 btrfs_get_root_ref+0xb0f/0xc30 fs/btrfs/disk-io.c:1346
 create_pending_snapshot+0xfd4/0x2ba0 fs/btrfs/transaction.c:1837
 create_pending_snapshots+0x195/0x1d0 fs/btrfs/transaction.c:1931
 btrfs_commit_transaction+0xf1c/0x3740 fs/btrfs/transaction.c:2404
 create_snapshot+0x507/0x880 fs/btrfs/ioctl.c:848
 btrfs_mksubvol+0x5d0/0x750 fs/btrfs/ioctl.c:998
 btrfs_mksnapshot+0xb5/0xf0 fs/btrfs/ioctl.c:1044
 __btrfs_ioctl_snap_create+0x387/0x4b0 fs/btrfs/ioctl.c:1306
 btrfs_ioctl_snap_create_v2+0x1ca/0x400 fs/btrfs/ioctl.c:1393
 btrfs_ioctl+0xa74/0xd40
 vfs_ioctl fs/ioctl.c:51 [inline]
 __do_sys_ioctl fs/ioctl.c:871 [inline]
 __se_sys_ioctl+0xfe/0x170 fs/ioctl.c:857
 do_syscall_64+0xfb/0x240
 entry_SYSCALL_64_after_hwframe+0x6f/0x77
RIP: 0033:0x7fc55187dda9
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:00007fc5525410c8 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
RAX: ffffffffffffffda RBX: 00007fc5519abf80 RCX: 00007fc55187dda9
RDX: 00000000200005c0 RSI: 0000000050009417 RDI: 0000000000000003
RBP: 00007fc5518ca47a R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 000000000000000b R14: 00007fc5519abf80 R15: 00007fff141e4f38
 </TASK>