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BUG: KMSAN: uninit-value in handle_tw_list fs/io_uring.c:2454 [inline]
BUG: KMSAN: uninit-value in tctx_task_work+0x1644/0x2020 fs/io_uring.c:2497
 handle_tw_list fs/io_uring.c:2454 [inline]
 tctx_task_work+0x1644/0x2020 fs/io_uring.c:2497
 task_work_run+0x154/0x290 kernel/task_work.c:164
 io_run_task_work fs/io_uring.c:2742 [inline]
 io_run_task_work_sig fs/io_uring.c:8099 [inline]
 io_cqring_wait_schedule fs/io_uring.c:8116 [inline]
 io_cqring_wait+0xf3d/0x19d0 fs/io_uring.c:8186
 __do_sys_io_uring_enter fs/io_uring.c:10826 [inline]
 __se_sys_io_uring_enter+0x194f/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

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: 11494 Comm: syz-executor.2 Not tainted 5.18.0-rc4-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
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