From: Yi Xie <xieyi@kylinos.cn>
Date: Tue, 30 Jun 2026 09:12:06 +0000 (+0800)
Subject: io_uring/memmap: return -EINVAL from get_unmapped_area() on bad mmap
X-Git-Url: http://git.ipfire.org/?a=commitdiff_plain;h=df645b745941ea829b39134ac342f730f4d9d978;p=thirdparty%2Fkernel%2Flinux.git

io_uring/memmap: return -EINVAL from get_unmapped_area() on bad mmap

get_unmapped_area() returns -ENOMEM when io_uring_validate_mmap_request()
fails, but validation errors are -EINVAL. Propagate that errno to
userspace, like io_uring_mmap() already does.

Signed-off-by: Yi Xie <xieyi@kylinos.cn>
Link: https://patch.msgid.link/20260630091206.126206-1-xieyi@kylinos.cn
Signed-off-by: Jens Axboe <axboe@kernel.dk>
---

diff --git a/io_uring/memmap.c b/io_uring/memmap.c
index da1f6c5d07f8a..23e8a85111bca 100644
--- a/io_uring/memmap.c
+++ b/io_uring/memmap.c
@@ -337,7 +337,7 @@ unsigned long io_uring_get_unmapped_area(struct file *filp, unsigned long addr,
 
 	ptr = io_uring_validate_mmap_request(filp, pgoff);
 	if (IS_ERR(ptr))
-		return -ENOMEM;
+		return PTR_ERR(ptr);
 
 	/*
 	 * Some architectures have strong cache aliasing requirements.