Patch "module: Fix NULL vs IS_ERR checking for module_get_next_page" has been added to the 6.1-stable tree

[Sasha Levin <sashal@xxxxxxxxxx>]

This is a note to let you know that I've just added the patch titled

    module: Fix NULL vs IS_ERR checking for module_get_next_page

to the 6.1-stable tree which can be found at:
    http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary

The filename of the patch is:
     module-fix-null-vs-is_err-checking-for-module_get_ne.patch
and it can be found in the queue-6.1 subdirectory.

If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.



commit 4dec6c1bd8fb9393812bdd2240d553fea21992bd
Author: Miaoqian Lin <linmq006@xxxxxxxxx>
Date:   Thu Nov 10 06:58:34 2022 +0400

    module: Fix NULL vs IS_ERR checking for module_get_next_page
    
    [ Upstream commit 45af1d7aae7d5520d2858f8517a1342646f015db ]
    
    The module_get_next_page() function return error pointers on error
    instead of NULL.
    Use IS_ERR() to check the return value to fix this.
    
    Fixes: b1ae6dc41eaa ("module: add in-kernel support for decompressing")
    Signed-off-by: Miaoqian Lin <linmq006@xxxxxxxxx>
    Reviewed-by: Dmitry Torokhov <dmitry.torokhov@xxxxxxxxx
    Signed-off-by: Luis Chamberlain <mcgrof@xxxxxxxxxx>
    Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>

diff --git a/kernel/module/decompress.c b/kernel/module/decompress.c
index c033572d83f0..720e719253cd 100644
--- a/kernel/module/decompress.c
+++ b/kernel/module/decompress.c
@@ -114,8 +114,8 @@ static ssize_t module_gzip_decompress(struct load_info *info,
 	do {
 		struct page *page = module_get_next_page(info);
 
-		if (!page) {
-			retval = -ENOMEM;
+		if (IS_ERR(page)) {
+			retval = PTR_ERR(page);
 			goto out_inflate_end;
 		}
 
@@ -173,8 +173,8 @@ static ssize_t module_xz_decompress(struct load_info *info,
 	do {
 		struct page *page = module_get_next_page(info);
 
-		if (!page) {
-			retval = -ENOMEM;
+		if (IS_ERR(page)) {
+			retval = PTR_ERR(page);
 			goto out;
 		}