Cannot find set identified by id 0 to match
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BUG: KCSAN: data-race in memcpy_and_pad / rcu_tasks_trace_pregp_step

write to 0xffff88812470b5dc of 4 bytes by task 28 on cpu 1:
 rcu_tasks_trace_pertask_prep kernel/rcu/tasks.h:1784 [inline]
 rcu_tasks_trace_pregp_step+0x1ac/0x920 kernel/rcu/tasks.h:1828
 rcu_tasks_wait_gp+0x8b/0x530 kernel/rcu/tasks.h:826
 rcu_tasks_one_gp+0x7f6/0x8e0 kernel/rcu/tasks.h:622
 rcu_tasks_kthread+0xf7/0x110 kernel/rcu/tasks.h:658
 kthread+0x489/0x510 kernel/kthread.c:463
 ret_from_fork+0x13f/0x270 arch/x86/kernel/process.c:158
 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245

read to 0xffff88812470b180 of 3264 bytes by task 10474 on cpu 0:
 memcpy_and_pad+0x48/0x80 lib/string_helpers.c:1007
 arch_dup_task_struct+0x2c/0x40 arch/x86/kernel/process.c:108
 dup_task_struct+0x83/0x6b0 kernel/fork.c:877
 copy_process+0x399/0x2000 kernel/fork.c:2012
 create_io_thread+0x71/0xa0 kernel/fork.c:2558
 create_io_worker+0xe0/0x370 io_uring/io-wq.c:910
 io_wq_create_worker io_uring/io-wq.c:339 [inline]
 io_wq_enqueue+0x2c1/0x3a0 io_uring/io-wq.c:1037
 io_queue_iowq+0x201/0x2e0 io_uring/io_uring.c:524
 io_req_task_submit+0xc4/0x100 io_uring/io_uring.c:1466
 __io_run_local_work_loop io_uring/io_uring.c:1381 [inline]
 __io_run_local_work+0x26c/0x4f0 io_uring/io_uring.c:1414
 io_run_local_work_locked io_uring/io_uring.c:1436 [inline]
 __do_sys_io_uring_enter io_uring/io_uring.c:3529 [inline]
 __se_sys_io_uring_enter+0x1761/0x1b70 io_uring/io_uring.c:3455
 __x64_sys_io_uring_enter+0x78/0x90 io_uring/io_uring.c:3455
 x64_sys_call+0x27e4/0x3000 arch/x86/include/generated/asm/syscalls_64.h:427
 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
 do_syscall_64+0xd8/0x2a0 arch/x86/entry/syscall_64.c:94
 entry_SYSCALL_64_after_hwframe+0x77/0x7f

Reported by Kernel Concurrency Sanitizer on:
CPU: 0 UID: 60928 PID: 10474 Comm: syz.4.1897 Not tainted syzkaller #0 PREEMPT(voluntary) 
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/02/2025
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