=====================================================
BUG: KMSAN: uninit-value in io_req_task_link_timeout+0x5e1/0xb80 fs/io_uring.c:7410
 io_req_task_link_timeout+0x5e1/0xb80 fs/io_uring.c:7410
 io_fallback_req_func+0x1d7/0x583 fs/io_uring.c:1497
 process_one_work+0xdb6/0x1820 kernel/workqueue.c:2289
 worker_thread+0x10d0/0x2240 kernel/workqueue.c:2436
 kthread+0x3c7/0x500 kernel/kthread.c:376
 ret_from_fork+0x1f/0x30

Uninit was created at:
 slab_post_alloc_hook mm/slab.h:754 [inline]
 kmem_cache_alloc_bulk+0xe98/0x1530 mm/slub.c:3745
 __io_alloc_req_refill+0x482/0x867 fs/io_uring.c:2200
 io_alloc_req_refill fs/io_uring.c:2226 [inline]
 io_submit_sqes+0x98a/0x1a80 fs/io_uring.c:7842
 __do_sys_io_uring_enter fs/io_uring.c:10800 [inline]
 __se_sys_io_uring_enter+0x89c/0x25a0 fs/io_uring.c:10726
 __x64_sys_io_uring_enter+0x19d/0x200 fs/io_uring.c:10726
 do_syscall_x64 arch/x86/entry/common.c:51 [inline]
 do_syscall_64+0x51/0xa0 arch/x86/entry/common.c:81
 entry_SYSCALL_64_after_hwframe+0x44/0xae

CPU: 0 PID: 27 Comm: kworker/0:1 Not tainted 5.18.0-rc4-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Workqueue: events io_fallback_req_func
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