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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_fill_cqe_req io_uring/io_uring.h:167 [inline]
BUG: KMSAN: uninit-value in __io_req_complete_post+0x1597/0x1630 io_uring/io_uring.c:969
 io_req_cqe_overflow io_uring/io_uring.c:809 [inline]
 io_fill_cqe_req io_uring/io_uring.h:167 [inline]
 __io_req_complete_post+0x1597/0x1630 io_uring/io_uring.c:969
 io_req_complete_post+0x1fb/0x270 io_uring/io_uring.c:1006
 io_issue_sqe+0x500/0x1050 io_uring/io_uring.c:1919
 io_wq_submit_work+0x5bb/0x8e0 io_uring/io_uring.c:1983
 io_worker_handle_work+0xd72/0x2130 io_uring/io-wq.c:587
 io_wqe_worker+0x432/0x13b0 io_uring/io-wq.c:632
 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:308

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_wq_submit_work+0x5bb/0x8e0 io_uring/io_uring.c:1983
 io_worker_handle_work+0xd72/0x2130 io_uring/io-wq.c:587
 io_wqe_worker+0x432/0x13b0 io_uring/io-wq.c:632
 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:308

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: 30017 Comm: iou-wrk-30006 Not tainted 6.3.0-rc7-syzkaller-g0255004d2a8e #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/14/2023
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