------------[ cut here ]------------
ida_free called for id=1214 which is not allocated.
WARNING: CPU: 0 PID: 15718 at lib/idr.c:592 ida_free+0x280/0x310 lib/idr.c:592
Modules linked in:
CPU: 0 UID: 0 PID: 15718 Comm: kworker/0:1 Not tainted syzkaller #0 PREEMPT(full) 
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 08/18/2025
Workqueue: events destroy_pid_namespace_work
RIP: 0010:ida_free+0x280/0x310 lib/idr.c:592
Code: 00 00 00 00 fc ff df 48 8b 5c 24 10 48 8b 7c 24 40 48 89 de e8 71 2c 0c 00 90 48 c7 c7 a0 7b 76 8c 44 89 fe e8 41 11 54 f6 90 <0f> 0b 90 90 eb 34 e8 85 a2 90 f6 49 bd 00 00 00 00 00 fc ff df eb
RSP: 0018:ffffc9000d68f940 EFLAGS: 00010246
RAX: 87e773254ce71c00 RBX: 0000000000000a06 RCX: ffff88801f7d8000
RDX: 0000000000000000 RSI: 0000000000000001 RDI: 0000000000000002
RBP: ffffc9000d68fa38 R08: 0000000000000003 R09: 0000000000000004
R10: dffffc0000000000 R11: fffffbfff1b7a138 R12: 1ffff92001ad1f2c
R13: dffffc0000000000 R14: ffff888024131700 R15: 00000000000004be
FS:  0000000000000000(0000) GS:ffff888126373000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007ff8a6918710 CR3: 000000000db36000 CR4: 00000000003526f0
DR0: 0000200000000300 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000600
Call Trace:
 <TASK>
 destroy_pid_namespace kernel/pid_namespace.c:155 [inline]
 destroy_pid_namespace_work+0x65/0x190 kernel/pid_namespace.c:170
 process_one_work kernel/workqueue.c:3263 [inline]
 process_scheduled_works+0xade/0x17b0 kernel/workqueue.c:3346
 worker_thread+0x8a0/0xda0 kernel/workqueue.c:3427
 kthread+0x711/0x8a0 kernel/kthread.c:463
 ret_from_fork+0x436/0x7d0 arch/x86/kernel/process.c:148
 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245
 </TASK>