+ alloc_tag-use-%pe-format-specifier.patch added to mm-new branch

+ alloc_tag-use-%pe-format-specifier.patch added to mm-new branch

[Andrew Morton]

The patch titled
     Subject: lib/alloc_tag: use %pe format specifier
has been added to the -mm mm-new branch.  Its filename is
     alloc_tag-use-%pe-format-specifier.patch

This patch will shortly appear at
     https://git.kernel.org/pub/scm/linux/kernel/git/akpm/25-new.git/tree/patches/alloc_tag-use-%pe-format-specifier.patch

This patch will later appear in the mm-new branch at
    git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm

Note, mm-new is a provisional staging ground for work-in-progress
patches, and acceptance into mm-new is a notification for others take
notice and to finish up reviews.  Please do not hesitate to respond to
review feedback and post updated versions to replace or incrementally
fixup patches in mm-new.

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------------------------------------------------------
From: Zeng Chi <zengchi@kylinos.cn>
Subject: lib/alloc_tag: use %pe format specifier
Date: Wed, 5 Nov 2025 10:39:25 +0800

The %pe format specifier is designed to print error pointers.  It prints a
symbolic error name (eg.  -EINVAL) and it makes the code simpler by
omitting PTR_ERR();

This patch fixes this cocci report:
lib/alloc_tag.c:776:63-70: WARNING: Consider using %pe to print PTR_ERR()

Link: https://lkml.kernel.org/r/20251105023925.1447482-1-zeng_chi911@163.com
Signed-off-by: Zeng Chi <zengchi@kylinos.cn>
Acked-by: SeongJae Park <sj@kernel.org>
Cc: Kent Overstreet <kent.overstreet@linux.dev>
Cc: Suren Baghdasaryan <surenb@google.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
---

 lib/alloc_tag.c |    2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

--- a/lib/alloc_tag.c~alloc_tag-use-%pe-format-specifier
+++ a/lib/alloc_tag.c
@@ -845,7 +845,7 @@ static int __init alloc_tag_init(void)
 
 	alloc_tag_cttype = codetag_register_type(&desc);
 	if (IS_ERR(alloc_tag_cttype)) {
-		pr_err("Allocation tags registration failed, errno = %ld\n", PTR_ERR(alloc_tag_cttype));
+		pr_err("Allocation tags registration failed, errno = %pe\n", alloc_tag_cttype);
 		free_mod_tags_mem();
 		shutdown_mem_profiling(true);
 		return PTR_ERR(alloc_tag_cttype);
_

Patches currently in -mm which might be from zengchi@kylinos.cn are

alloc_tag-use-%pe-format-specifier.patch