------------[ cut here ]------------
WARNING: io_uring/io_uring.c:3040 at io_ring_exit_work+0xc86/0xf60, CPU#1: kworker/u9:4/327
Modules linked in:
CPU: 1 UID: 0 PID: 327 Comm: kworker/u9:4 Tainted: G        W           6.17.0-rc3-next-20250829 #1 PREEMPT(voluntary) 
Tainted: [W]=WARN
Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.12.0-1 04/01/2014
Workqueue: iou_exit io_ring_exit_work
RIP: 0010:io_ring_exit_work+0xc86/0xf60
Code: 65 48 2b 05 e4 fc 3d 05 0f 85 55 01 00 00 48 81 c4 40 01 00 00 5b 5d 41 5c 41 5d 41 5e 41 5f e9 c0 d3 77 02 e8 3b b4 2d ff 90 <0f> 0b 90 48 c7 44 24 08 60 ea 00 00 e9 13 f7 ff ff e8 24 b4 2d ff
RSP: 0018:ffff88801722fb08 EFLAGS: 00010293
RAX: 0000000000000000 RBX: ffff8880163426c8 RCX: ffffffff82462a61
RDX: ffff88800ebfd280 RSI: ffffffff82463345 RDI: 0000000000000007
RBP: ffff888016342000 R08: 0000000000000001 R09: ffffed1002e45f4a
R10: ffffffffffffffde R11: 0000000000000000 R12: dffffc0000000000
R13: ffffffffffffffde R14: ffff88801634203f R15: ffff888016342040
FS:  0000000000000000(0000) GS:ffff8880e56dd000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000055de7abc8500 CR3: 000000002031c000 CR4: 0000000000350ef0
Call Trace:
 <TASK>
 process_one_work+0x8e1/0x19c0
 worker_thread+0x67e/0xe90
 kthread+0x3c8/0x740
 ret_from_fork+0x34b/0x430
 ret_from_fork_asm+0x1a/0x30
 </TASK>
irq event stamp: 566939
hardirqs last  enabled at (566959): [<ffffffff81541b18>] __up_console_sem+0x78/0x80
hardirqs last disabled at (566968): [<ffffffff81541afd>] __up_console_sem+0x5d/0x80
softirqs last  enabled at (566956): [<ffffffff813bafcc>] handle_softirqs+0x50c/0x770
softirqs last disabled at (566947): [<ffffffff813bb364>] __irq_exit_rcu+0xc4/0x100
---[ end trace 0000000000000000 ]---
kmemleak: Found object by alias at 0x607f1a63821c
CPU: 1 UID: 0 PID: 8221 Comm: syz-executor.0 Tainted: G        W           6.17.0-rc3-next-20250829 #1 PREEMPT(voluntary) 
Tainted: [W]=WARN
Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.12.0-1 04/01/2014
Call Trace:
 <TASK>
 dump_stack_lvl+0xca/0x120
 __lookup_object+0x94/0xb0
 delete_object_full+0x27/0x70
 free_percpu+0x30/0x1160
 futex_hash_free+0x38/0xc0
 mmput+0x2d3/0x390
 do_exit+0x79d/0x2970
 do_group_exit+0xd3/0x2a0
 get_signal+0x2315/0x2340
 arch_do_signal_or_restart+0x80/0x790
 exit_to_user_mode_loop+0x8b/0x110
 do_syscall_64+0x2f7/0x360
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f3fbfe04b19
Code: Unable to access opcode bytes at 0x7f3fbfe04aef.
RSP: 002b:00007f3fbd37a218 EFLAGS: 00000246 ORIG_RAX: 00000000000000ca
RAX: fffffffffffffe00 RBX: 00007f3fbff17f68 RCX: 00007f3fbfe04b19
RDX: 0000000000000000 RSI: 0000000000000080 RDI: 00007f3fbff17f68
RBP: 00007f3fbff17f60 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 00007f3fbff17f6c
R13: 00007fffbbf612af R14: 00007f3fbd37a300 R15: 0000000000022000
 </TASK>
kmemleak: Object (percpu) 0x607f1a638218 (size 8):
kmemleak:   comm "syz-executor.5", pid 8227, jiffies 4295564459
kmemleak:   min_count = 1
kmemleak:   count = 0
kmemleak:   flags = 0x21
kmemleak:   checksum = 0
kmemleak:   backtrace:
 pcpu_alloc_noprof+0x87a/0x1170
 percpu_ref_init+0x37/0x400
 io_uring_setup+0x44c/0x2000
 __x64_sys_io_uring_setup+0xc8/0x170
 do_syscall_64+0xbf/0x360
 entry_SYSCALL_64_after_hwframe+0x77/0x7f