===================================================== 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 io_submit_state_end fs/io_uring.c:9007 [inline] io_submit_sqes+0x7d3/0xd50 fs/io_uring.c:9119 __do_sys_io_uring_enter fs/io_uring.c:12051 [inline] __se_sys_io_uring_enter+0x670/0x25c0 fs/io_uring.c:11977 __ia32_sys_io_uring_enter+0x115/0x190 fs/io_uring.c:11977 do_syscall_32_irqs_on arch/x86/entry/common.c:112 [inline] __do_fast_syscall_32+0xa2/0x100 arch/x86/entry/common.c:178 do_fast_syscall_32+0x33/0x70 arch/x86/entry/common.c:203 do_SYSENTER_32+0x1b/0x20 arch/x86/entry/common.c:246 entry_SYSENTER_compat_after_hwframe+0x70/0x82 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_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 __ia32_sys_io_uring_enter+0x115/0x190 fs/io_uring.c:11977 do_syscall_32_irqs_on arch/x86/entry/common.c:112 [inline] __do_fast_syscall_32+0xa2/0x100 arch/x86/entry/common.c:178 do_fast_syscall_32+0x33/0x70 arch/x86/entry/common.c:203 do_SYSENTER_32+0x1b/0x20 arch/x86/entry/common.c:246 entry_SYSENTER_compat_after_hwframe+0x70/0x82 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: 1 PID: 5154 Comm: syz-executor.1 Not tainted 5.19.0-syzkaller-32655-g1b070a5d1a2c #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/22/2022 =====================================================