===================================================== 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 __do_sys_io_uring_enter io_uring/io_uring.c:3458 [inline] __se_sys_io_uring_enter+0x4ed/0x4300 io_uring/io_uring.c:3392 __x64_sys_io_uring_enter+0x11b/0x1a0 io_uring/io_uring.c:3392 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x41/0xc0 arch/x86/entry/common.c:80 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_submit_sqe io_uring/io_uring.c:2340 [inline] io_submit_sqes+0x11e2/0x2e10 io_uring/io_uring.c:2450 __do_sys_io_uring_enter io_uring/io_uring.c:3458 [inline] __se_sys_io_uring_enter+0x4ed/0x4300 io_uring/io_uring.c:3392 __x64_sys_io_uring_enter+0x11b/0x1a0 io_uring/io_uring.c:3392 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x41/0xc0 arch/x86/entry/common.c:80 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: 1 PID: 8077 Comm: syz-executor.0 Not tainted 6.3.0-syzkaller-g81af97bdef5e #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/14/2023 =====================================================