generic string library · Supported

Maintainers

• M Kees Cook <kees@kernel.org>
• R Andy Shevchenko <andy@kernel.org>

Paths

• F include/linux/string.h
• F include/linux/string_choices.h
• F include/linux/string_helpers.h
• F lib/string.c
• F lib/string_helpers.c
• F lib/tests/string_helpers_kunit.c
• F lib/tests/string_kunit.c
• F scripts/coccinelle/api/string_choices.cocci

Last 30 days

Most active threads (last 7 days)

• DORMANTno replies [PATCH] lib/string: fix memchr_inv() for large ranges
  2026-06-21 12:11 · 0 replies in 7d · Bradley Morgan <hidden>

Active reviewers (last 30 days)

• Feng Jiang <hidden>
  1 attestation (1 Co-developed-by) · last on 2026-05-26

Recent patches

Most-recent 30 patches in this subsystem on linux-hardening (capped at 30), ordered by date desc.

• DORMANTno replies [PATCH] lib/string: fix memchr_inv() for large ranges
  2026-06-21 · Bradley Morgan <hidden>
• COOLING12d Re: [PATCH net-next] net/devlink: Use strscpy() to copy strings into arrays
  2026-06-10 · Kees Cook <kees@kernel.org>
• COOLING11d [PATCH v4 6/8] string: introduce memcpy_streaming() helpers
  2026-06-03 · Li Zhe <hidden>
• COLD19d [PATCH v1 1/1] string: Add missing Return sections
  2026-06-03 · Andy Shevchenko <andriy.shevchenko@linux.intel.com>
• COLD25d [PATCH v3 6/8] string: introduce memcpy_streaming() helpers
  2026-05-27 · Li Zhe <hidden>
• DORMANTno replies [PATCH] lib/string_kunit: add strnlen() tests for strings without NUL terminator
  2026-05-26 · Zongmin Zhou <hidden>
• COLD28d [PATCH v2 5/7] string: introduce memcpy_streaming() helpers
  2026-05-21 · Li Zhe <hidden>
• DORMANTno replies [PATCH 2/2] lib/string_kunit: extend benchmarks and unit test to memchr()
  2026-05-20 · Milan Tripkovic <hidden>
• DORMANTno replies [PATCH v6 2/2] lib/string_kunit: extend benchmarks and unit test to memcmp()
  2026-05-20 · Milan Tripkovic <hidden>
• COLD34d [PATCH v5 2/2] lib/string_kunit: extend benchmarks and unit test to memcmp()
  2026-05-19 · Milan Tripkovic <hidden>
• COLD34d [PATCH v4 2/2] lib/string_kunit: extend benchmarks and unit test to memcmp()
  2026-05-18 · Milan Tripkovic <hidden>
• DORMANTno replies [PATCH v3 2/2] lib/string_kunit: extend benchmarks and unit test to memcmp()
  2026-05-15 · Milan Tripkovic <hidden>
• COLD34d IN LINUX-NEXT [PATCH] string: use min in sized_strscpy
  2026-05-14 · Thorsten Blum <thorsten.blum@linux.dev>
• COLD38d [PATCH v2 2/2] lib/string_kunit: extend benchmarks and unit test to memcmp()
  2026-05-14 · Milan Tripkovic <hidden>
• COLD42d [PATCH v3 3/3] coccinelle: Add rules to find str_alloc_free() replacements
  2026-05-07 · Jiazi Li <hidden>
• COLD42d REVIEWED: 1 (0M) [PATCH v3 1/3] lib/string_choices: Add str_alloc_free() helper
  2026-05-07 · Jiazi Li <hidden>
• COLD47d REVIEWED: 1 (0M) [PATCH v3] coccinelle: Adjust the position of some coccinelle rules
  2026-05-06 · Jiazi Li <hidden>
• COLD49d [PATCH] string: use strnlen in strlcat
  2026-04-30 · Thorsten Blum <thorsten.blum@linux.dev>
• COLD52d REVIEWED: 1 (0M) [PATCH v2 2/2] coccinelle: Add rules to find str_alloc_free() replacements
  2026-04-30 · Jiazi Li <hidden>
• COLD52d REVIEWED: 1 (0M) [PATCH v2 1/2] lib/string_choices: Add str_alloc_free() helper
  2026-04-30 · Jiazi Li <hidden>
• COLD54d REVIEWED: 1 (0M) [PATCH 2/2] coccinelle: Add rules to find str_alloc_free() replacements
  2026-04-29 · Jiazi Li <hidden>
• COLD54d REVIEWED: 1 (0M) [PATCH 1/2] lib/string_choices: Add str_alloc_free() helper
  2026-04-29 · Jiazi Li <hidden>
• DORMANTno replies [PATCH v1 1/1] string: Group zero related memory APIs in the header
  2026-04-22 · Andy Shevchenko <andriy.shevchenko@linux.intel.com>
• STALE61d [PATCH] lib/tests: add string_get_size() boundary tests
  2026-04-21 · Shuvam Pandey <hidden>
• STALE62d [PATCH v2] lib/string_helpers: renormalize string_get_size() after rounding carry
  2026-04-19 · Shuvam Pandey <hidden>
• COLD40d [PATCH 2/2] lib/string_helpers: annotate struct strarray with __counted_by_ptr
  2026-04-15 · Thorsten Blum <thorsten.blum@linux.dev>
• COLD40d [PATCH 1/2] lib/string_helpers: drop redundant allocation in kasprintf_strarray
  2026-04-15 · Thorsten Blum <thorsten.blum@linux.dev>
• STALE62d [PATCH] lib/string_helpers: fix string_get_size() unit promotion after rounding
  2026-04-07 · Shuvam Pandey <hidden>
• STALE74d IN LINUX-NEXT [PATCH v1 2/2] lib/tests: string_helpers: Don't use "proxy" headers
  2026-04-06 · Andy Shevchenko <andriy.shevchenko@linux.intel.com>
• STALE74d IN LINUX-NEXT [PATCH v1 1/2] lib/tests: string_helpers: Decouple unescape and escape cases
  2026-04-06 · Andy Shevchenko <andriy.shevchenko@linux.intel.com>

Needs attention (review trailers in, no pickup)

Patches with review trailers that haven't landed in mainline and haven't been Acked by a maintainer. Oldest first.

• STALE131d REVIEWED: 1 (0M) [PATCH] vsnprintf: drop __printf() attributes on binary printing functions
  2026-02-04 · Arnd Bergmann <arnd@kernel.org> · 1 Acked-by
• COLD54d REVIEWED: 1 (0M) [PATCH 2/2] coccinelle: Add rules to find str_alloc_free() replacements
  2026-04-29 · Jiazi Li <hidden> · 1 Tested-by
• COLD52d REVIEWED: 1 (0M) [PATCH v2 2/2] coccinelle: Add rules to find str_alloc_free() replacements
  2026-04-30 · Jiazi Li <hidden> · 1 Tested-by
• COLD47d REVIEWED: 1 (0M) [PATCH v3] coccinelle: Adjust the position of some coccinelle rules
  2026-05-06 · Jiazi Li <hidden> · 1 Tested-by

Quiet for 30+ days

Patches with no review trailers and no replies. Either the author is heads-down elsewhere or these slipped through. Oldest first.

• STALE154d [PATCH v2 05/14] lib/string_kunit: add correctness test for strlen
  2026-01-13 · Feng Jiang <hidden>
• STALE154d [PATCH v2 07/14] lib/string_kunit: add correctness test for strrchr()
  2026-01-13 · Feng Jiang <hidden>
• STALE74d IN LINUX-NEXT [PATCH v1 2/2] lib/tests: string_helpers: Don't use "proxy" headers
  2026-04-06 · Andy Shevchenko <andriy.shevchenko@linux.intel.com>
• STALE74d IN LINUX-NEXT [PATCH v1 1/2] lib/tests: string_helpers: Decouple unescape and escape cases
  2026-04-06 · Andy Shevchenko <andriy.shevchenko@linux.intel.com>
• COLD40d [PATCH 2/2] lib/string_helpers: annotate struct strarray with __counted_by_ptr
  2026-04-15 · Thorsten Blum <thorsten.blum@linux.dev>
• DORMANTno replies [PATCH v1 1/1] string: Group zero related memory APIs in the header
  2026-04-22 · Andy Shevchenko <andriy.shevchenko@linux.intel.com>
• COLD42d [PATCH v3 3/3] coccinelle: Add rules to find str_alloc_free() replacements
  2026-05-07 · Jiazi Li <hidden>
• DORMANTno replies [PATCH v3 2/2] lib/string_kunit: extend benchmarks and unit test to memcmp()
  2026-05-15 · Milan Tripkovic <hidden>
• COLD34d [PATCH v4 2/2] lib/string_kunit: extend benchmarks and unit test to memcmp()
  2026-05-18 · Milan Tripkovic <hidden>
• DORMANTno replies [PATCH v6 2/2] lib/string_kunit: extend benchmarks and unit test to memcmp()
  2026-05-20 · Milan Tripkovic <hidden>