===================================================== 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 io_submit_state_end io_uring/io_uring.c:2354 [inline] io_submit_sqes+0x2883/0x2e10 io_uring/io_uring.c:2465 __io_sq_thread io_uring/sqpoll.c:193 [inline] io_sq_thread+0xe48/0x1af0 io_uring/sqpoll.c:249 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_queue_sqe io_uring/io_uring.c:2079 [inline] io_submit_sqe io_uring/io_uring.c:2340 [inline] io_submit_sqes+0x11e2/0x2e10 io_uring/io_uring.c:2450 __io_sq_thread io_uring/sqpoll.c:193 [inline] io_sq_thread+0xe48/0x1af0 io_uring/sqpoll.c:249 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: 9646 Comm: iou-sqp-9641 Not tainted 6.3.0-syzkaller-g81af97bdef5e #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/14/2023 =====================================================