+ lib-glob-initialize-back_str-to-silence-uninitialized-variable-warning.patch added to mm-nonmm-unstable branch

+ lib-glob-initialize-back_str-to-silence-uninitialized-variable-warning.patch added to mm-nonmm-unstable branch

[Andrew Morton]

The patch titled
     Subject: lib/glob: initialize back_str to silence uninitialized variable warning
has been added to the -mm mm-nonmm-unstable branch.  Its filename is
     lib-glob-initialize-back_str-to-silence-uninitialized-variable-warning.patch

This patch will shortly appear at
     https://git.kernel.org/pub/scm/linux/kernel/git/akpm/25-new.git/tree/patches/lib-glob-initialize-back_str-to-silence-uninitialized-variable-warning.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: Josh Law <objecting@objecting.org>
Subject: lib/glob: initialize back_str to silence uninitialized variable warning
Date: Thu, 12 Mar 2026 21:52:49 +0000

back_str is only used when back_pat is non-NULL, and both are always set
together, so it is safe in practice.  Initialize back_str to NULL to make
this safety invariant explicit and silence compiler/static analysis
warnings.

Link: https://lkml.kernel.org/r/20260312215249.50165-1-objecting@objecting.org
Signed-off-by: Josh Law <objecting@objecting.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
---

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

--- a/lib/glob.c~lib-glob-initialize-back_str-to-silence-uninitialized-variable-warning
+++ a/lib/glob.c
@@ -47,7 +47,7 @@ bool __pure glob_match(char const *pat,
 	 * (no exception for /), it can be easily proved that there's
 	 * never a need to backtrack multiple levels.
 	 */
-	char const *back_pat = NULL, *back_str;
+	char const *back_pat = NULL, *back_str = NULL;
 
 	/*
 	 * Loop over each token (character or class) in pat, matching
_

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

lib-maple_tree-fix-swapped-arguments-in-mas_safe_pivot-call.patch
lib-glob-fix-grammar-and-replace-non-inclusive-terminology.patch
lib-glob-add-explicit-include-for-exporth.patch
lib-glob-replace-bitwise-or-with-logical-operation-on-boolean.patch
lib-glob-clean-up-bool-abuse-in-pointer-arithmetic.patch
lib-uuid-fix-typo-reversion-to-revision-in-comment.patch
lib-inflate-fix-memory-leak-in-inflate_fixed-on-inflate_codes-failure.patch
lib-inflate-fix-memory-leak-in-inflate_dynamic-on-inflate_codes-failure.patch
lib-inflate-fix-grammar-in-comment-variable-to-variables.patch
lib-inflate-fix-typo-this-results-to-the-results-in-comment.patch
lib-bug-fix-inconsistent-capitalization-in-bug-message.patch
lib-bug-remove-unnecessary-variable-initializations.patch
lib-idr-fix-ida_find_first_range-missing-ids-across-chunk-boundaries.patch
lib-decompress_bunzip2-fix-32-bit-shift-undefined-behavior.patch
maintainers-add-josh-law-as-reviewer-for-library-code.patch
lib-bootconfig-fix-typo-budy-in-_xbc_exit-comment.patch
lib-ts_bm-fix-integer-overflow-in-pattern-length-calculation.patch
lib-ts_kmp-fix-integer-overflow-in-pattern-length-calculation.patch
lib-bootconfig-fix-off-by-one-in-xbc_verify_tree-unclosed-brace-error.patch
lib-bootconfig-fix-snprintf-truncation-check-in-xbc_node_compose_key_after.patch
lib-glob-initialize-back_str-to-silence-uninitialized-variable-warning.patch