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BUG: KMSAN: uninit-value in __io_fill_cqe_req+0x9bd/0xed0 fs/io_uring.c:2482
 __io_fill_cqe_req+0x9bd/0xed0 fs/io_uring.c:2482
 __io_submit_flush_completions fs/io_uring.c:3160 [inline]
 io_submit_flush_completions+0x175/0x420 fs/io_uring.c:1575
 tctx_task_work+0x1866/0x1ab0 fs/io_uring.c:2972
 task_work_run+0x13c/0x280 kernel/task_work.c:177
 get_signal+0x152/0x2c50 kernel/signal.c:2634
 arch_do_signal_or_restart+0x56/0xae0 arch/x86/kernel/signal.c:869
 exit_to_user_mode_loop+0xea/0x320 kernel/entry/common.c:168
 exit_to_user_mode_prepare+0x16e/0x220 kernel/entry/common.c:203
 __syscall_exit_to_user_mode_work kernel/entry/common.c:285 [inline]
 syscall_exit_to_user_mode+0x23/0x40 kernel/entry/common.c:296
 do_syscall_64+0x49/0xb0 arch/x86/entry/common.c:86
 entry_SYSCALL_64_after_hwframe+0x63/0xcd

Uninit was stored to memory at:
 io_req_complete_state fs/io_uring.c:2600 [inline]
 __io_req_complete fs/io_uring.c:2608 [inline]
 io_recvmsg fs/io_uring.c:6420 [inline]
 io_issue_sqe+0x17a24/0x19760 fs/io_uring.c:8371
 io_queue_sqe fs/io_uring.c:8729 [inline]
 io_req_task_submit+0x135/0x510 fs/io_uring.c:3064
 io_apoll_task_func+0x286/0x320 fs/io_uring.c:6961
 handle_tw_list fs/io_uring.c:2938 [inline]
 tctx_task_work+0x1519/0x1ab0 fs/io_uring.c:2967
 task_work_run+0x13c/0x280 kernel/task_work.c:177
 get_signal+0x152/0x2c50 kernel/signal.c:2634
 arch_do_signal_or_restart+0x56/0xae0 arch/x86/kernel/signal.c:869
 exit_to_user_mode_loop+0xea/0x320 kernel/entry/common.c:168
 exit_to_user_mode_prepare+0x16e/0x220 kernel/entry/common.c:203
 __syscall_exit_to_user_mode_work kernel/entry/common.c:285 [inline]
 syscall_exit_to_user_mode+0x23/0x40 kernel/entry/common.c:296
 do_syscall_64+0x49/0xb0 arch/x86/entry/common.c:86
 entry_SYSCALL_64_after_hwframe+0x63/0xcd

Uninit was stored to memory at:
 io_setup_async_msg+0x1d7/0x420 fs/io_uring.c:6059
 io_issue_sqe+0x14675/0x19760
 io_queue_sqe fs/io_uring.c:8729 [inline]
 io_submit_sqe+0x8b22/0xa8b0 fs/io_uring.c:8993
 io_submit_sqes+0x542/0xd50 fs/io_uring.c:9104
 __do_sys_io_uring_enter fs/io_uring.c:12051 [inline]
 __se_sys_io_uring_enter+0x670/0x25c0 fs/io_uring.c:11977
 __x64_sys_io_uring_enter+0x117/0x190 fs/io_uring.c:11977
 do_syscall_x64 arch/x86/entry/common.c:50 [inline]
 do_syscall_64+0x3d/0xb0 arch/x86/entry/common.c:80
 entry_SYSCALL_64_after_hwframe+0x63/0xcd

Local variable iomsg.i410 created at:
 io_recvmsg fs/io_uring.c:6349 [inline]
 io_issue_sqe+0x1ae5/0x19760 fs/io_uring.c:8371
 io_queue_sqe fs/io_uring.c:8729 [inline]
 io_submit_sqe+0x8b22/0xa8b0 fs/io_uring.c:8993

CPU: 0 PID: 6387 Comm: syz-executor.5 Not tainted 5.19.0-syzkaller-32655-g1b070a5d1a2c #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/22/2022
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