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Date: Sun, 01 Sep 2024 20:46:32 -0700
To: mm-commits@vger.kernel.org,jannh@google.com,adobriyan@gmail.com,andrii@kernel.org,akpm@linux-foundation.org
From: Andrew Morton <akpm@linux-foundation.org>
Subject: [merged mm-nonmm-stable] fs-procfs-remove-build-id-related-code-duplication-in-procmap_query.patch removed from -mm tree
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The quilt patch titled
     Subject: fs/procfs: remove build ID-related code duplication in PROCMAP_QUERY
has been removed from the -mm tree.  Its filename was
     fs-procfs-remove-build-id-related-code-duplication-in-procmap_query.patch

This patch was dropped because it was merged into the mm-nonmm-stable branch
of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm

------------------------------------------------------
From: Andrii Nakryiko <andrii@kernel.org>
Subject: fs/procfs: remove build ID-related code duplication in PROCMAP_QUERY
Date: Mon, 29 Jul 2024 10:40:44 -0700

A piece of build ID handling code in PROCMAP_QUERY ioctl() was
accidentally duplicated.  It wasn't meant to be part of ed5d583a88a9
("fs/procfs: implement efficient VMA querying API for /proc/<pid>/maps")
commit, which is what introduced duplication.

It has no correctness implications, but we unnecessarily perform the same
work twice, if build ID parsing is requested.  Drop the duplication.

Link: https://lkml.kernel.org/r/20240729174044.4008399-1-andrii@kernel.org
Fixes: ed5d583a88a9 ("fs/procfs: implement efficient VMA querying API for /proc/<pid>/maps")
Signed-off-by: Andrii Nakryiko <andrii@kernel.org>
Reported-by: Jann Horn <jannh@google.com>
Cc: Alexey Dobriyan <adobriyan@gmail.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
---

 fs/proc/task_mmu.c |   15 ---------------
 1 file changed, 15 deletions(-)

--- a/fs/proc/task_mmu.c~fs-procfs-remove-build-id-related-code-duplication-in-procmap_query
+++ a/fs/proc/task_mmu.c
@@ -543,21 +543,6 @@ static int do_procmap_query(struct proc_
 		}
 	}
 
-	if (karg.build_id_size) {
-		__u32 build_id_sz;
-
-		err = build_id_parse(vma, build_id_buf, &build_id_sz);
-		if (err) {
-			karg.build_id_size = 0;
-		} else {
-			if (karg.build_id_size < build_id_sz) {
-				err = -ENAMETOOLONG;
-				goto out;
-			}
-			karg.build_id_size = build_id_sz;
-		}
-	}
-
 	if (karg.vma_name_size) {
 		size_t name_buf_sz = min_t(size_t, PATH_MAX, karg.vma_name_size);
 		const struct path *path;
_

Patches currently in -mm which might be from andrii@kernel.org are