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BUG: KMSAN: uninit-value in io_req_cqe_overflow io_uring/io_uring.c:809 [inline]
BUG: KMSAN: uninit-value in __io_submit_flush_completions io_uring/io_uring.c:1520 [inline]
BUG: KMSAN: uninit-value in io_submit_flush_completions+0x880/0xcd0 io_uring/io_uring.c:173
 io_req_cqe_overflow io_uring/io_uring.c:809 [inline]
 __io_submit_flush_completions io_uring/io_uring.c:1520 [inline]
 io_submit_flush_completions+0x880/0xcd0 io_uring/io_uring.c:173
 tctx_task_work+0x85a/0xbb0 io_uring/io_uring.c:1252
 task_work_run+0x263/0x300 kernel/task_work.c:179
 get_signal+0x156/0x2be0 kernel/signal.c:2635
 arch_do_signal_or_restart+0x5a/0x9f0 arch/x86/kernel/signal.c:306
 exit_to_user_mode_loop+0xea/0x320 kernel/entry/common.c:168
 exit_to_user_mode_prepare+0x16c/0x230 kernel/entry/common.c:204
 __syscall_exit_to_user_mode_work kernel/entry/common.c:286 [inline]
 syscall_exit_to_user_mode+0x2a/0x140 kernel/entry/common.c:297
 do_syscall_64+0x4d/0xc0 arch/x86/entry/common.c:86
 entry_SYSCALL_64_after_hwframe+0x63/0xcd

Uninit was stored to memory at:
 io_req_set_res io_uring/io_uring.h:182 [inline]
 io_recv_finish io_uring/net.c:623 [inline]
 io_recv+0x19a1/0x1cf0 io_uring/net.c:928
 io_issue_sqe+0x39d/0x1050 io_uring/io_uring.c:1907
 io_queue_sqe io_uring/io_uring.c:2079 [inline]
 io_req_task_submit+0x195/0x310 io_uring/io_uring.c:1425
 io_poll_task_func+0x1451/0x1590
 handle_tw_list io_uring/io_uring.c:1184 [inline]
 tctx_task_work+0x498/0xbb0 io_uring/io_uring.c:1246
 task_work_run+0x263/0x300 kernel/task_work.c:179
 get_signal+0x156/0x2be0 kernel/signal.c:2635
 arch_do_signal_or_restart+0x5a/0x9f0 arch/x86/kernel/signal.c:306
 exit_to_user_mode_loop+0xea/0x320 kernel/entry/common.c:168
 exit_to_user_mode_prepare+0x16c/0x230 kernel/entry/common.c:204
 __syscall_exit_to_user_mode_work kernel/entry/common.c:286 [inline]
 syscall_exit_to_user_mode+0x2a/0x140 kernel/entry/common.c:297
 do_syscall_64+0x4d/0xc0 arch/x86/entry/common.c:86
 entry_SYSCALL_64_after_hwframe+0x63/0xcd

Local variable msg created at:
 io_recv+0x4f/0x1cf0 io_uring/net.c:844
 io_issue_sqe+0x39d/0x1050 io_uring/io_uring.c:1907

CPU: 0 PID: 7422 Comm: syz-executor.4 Tainted: G        W          6.3.0-syzkaller-g81af97bdef5e #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/14/2023
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