+ crash_dump-remove-redundant-less-than-zero-check.patch added to mm-nonmm-unstable branch

+ crash_dump-remove-redundant-less-than-zero-check.patch added to mm-nonmm-unstable branch

[Andrew Morton]

The patch titled
     Subject: crash_dump: remove redundant less-than-zero check
has been added to the -mm mm-nonmm-unstable branch.  Its filename is
     crash_dump-remove-redundant-less-than-zero-check.patch

This patch will shortly appear at
     https://git.kernel.org/pub/scm/linux/kernel/git/akpm/25-new.git/tree/patches/crash_dump-remove-redundant-less-than-zero-check.patch

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

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------------------------------------------------------
From: Thorsten Blum <thorsten.blum@linux.dev>
Subject: crash_dump: remove redundant less-than-zero check
Date: Sat, 28 Feb 2026 09:51:36 +0100

'key_count' is an 'unsigned int' and cannot be less than zero. Remove
the redundant condition.

Link: https://lkml.kernel.org/r/20260228085136.861971-2-thorsten.blum@linux.dev
Signed-off-by: Thorsten Blum <thorsten.blum@linux.dev>
Cc: Baoquan He <bhe@redhat.com>
Cc: Dave Young <dyoung@redhat.com>
Cc: Vivek Goyal <vgoyal@redhat.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
---

 kernel/crash_dump_dm_crypt.c |    2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

--- a/kernel/crash_dump_dm_crypt.c~crash_dump-remove-redundant-less-than-zero-check
+++ a/kernel/crash_dump_dm_crypt.c
@@ -115,7 +115,7 @@ static int restore_dm_crypt_keys_to_thre
 
 	addr = dm_crypt_keys_addr;
 	dm_crypt_keys_read((char *)&key_count, sizeof(key_count), &addr);
-	if (key_count < 0 || key_count > KEY_NUM_MAX) {
+	if (key_count > KEY_NUM_MAX) {
 		kexec_dprintk("Failed to read the number of dm-crypt keys\n");
 		return -1;
 	}
_

Patches currently in -mm which might be from thorsten.blum@linux.dev are

fork-replace-simple_strtoul-with-kstrtoul-in-coredump_filter_setup.patch
crash_dump-remove-redundant-less-than-zero-check.patch