------------[ cut here ]------------
ida_free called for id=2719 which is not allocated.
WARNING: CPU: 0 PID: 9844 at lib/idr.c:592 ida_free+0x280/0x310 lib/idr.c:592
Modules linked in:
CPU: 0 UID: 0 PID: 9844 Comm: kworker/0:15 Not tainted syzkaller #0 PREEMPT(full) 
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 08/18/2025
Workqueue: events free_ipc
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 81 2c 0c 00 90 48 c7 c7 20 27 74 8c 44 89 fe e8 91 1c 59 f6 90 <0f> 0b 90 90 eb 34 e8 75 ae 95 f6 49 bd 00 00 00 00 00 fc ff df eb
RSP: 0018:ffffc90003577940 EFLAGS: 00010246
RAX: 779554b382d91400 RBX: 0000000000000a06 RCX: ffff888054958000
RDX: 0000000000000000 RSI: 0000000000000001 RDI: 0000000000000002
RBP: ffffc90003577a38 R08: 0000000000000003 R09: 0000000000000004
R10: dffffc0000000000 R11: fffffbfff1b7a118 R12: 1ffff920006aef2c
R13: dffffc0000000000 R14: ffff8880307bfe00 R15: 0000000000000a9f
FS:  0000000000000000(0000) GS:ffff88812639b000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f9a2c917d60 CR3: 000000009bcb0000 CR4: 00000000003526f0
Call Trace:
 <TASK>
 free_ipc_ns ipc/namespace.c:164 [inline]
 free_ipc+0x1e9/0x250 ipc/namespace.c:181
 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>