Merge tag 'hardening-v6.6-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/kees/linux

Pull hardening updates from Kees Cook:
 "As has become normal, changes are scattered around the tree (either
  explicitly maintainer Acked or for trivial stuff that went ignored):

   - Carve out the new CONFIG_LIST_HARDENED as a more focused subset of
     CONFIG_DEBUG_LIST (Marco Elver)

   - Fix kallsyms lookup failure under Clang LTO (Yonghong Song)

   - Clarify documentation for CONFIG_UBSAN_TRAP (Jann Horn)

   - Flexible array member conversion not carried in other tree (Gustavo
     A. R. Silva)

   - Various strlcpy() and strncpy() removals not carried in other trees
     (Azeem Shaikh, Justin Stitt)

   - Convert nsproxy.count to refcount_t (Elena Reshetova)

   - Add handful of __counted_by annotations not carried in other trees,
     as well as an LKDTM test

   - Fix build failure with gcc-plugins on GCC 14+

   - Fix selftests to respect SKIP for signal-delivery tests

   - Fix CFI warning for paravirt callback prototype

   - Clarify documentation for seq_show_option_n() usage"

* tag 'hardening-v6.6-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/kees/linux: (23 commits)
  LoadPin: Annotate struct dm_verity_loadpin_trusted_root_digest with __counted_by
  kallsyms: Change func signature for cleanup_symbol_name()
  kallsyms: Fix kallsyms_selftest failure
  nsproxy: Convert nsproxy.count to refcount_t
  integrity: Annotate struct ima_rule_opt_list with __counted_by
  lkdtm: Add FAM_BOUNDS test for __counted_by
  Compiler Attributes: counted_by: Adjust name and identifier expansion
  um: refactor deprecated strncpy to memcpy
  um: vector: refactor deprecated strncpy
  alpha: Replace one-element array with flexible-array member
  hardening: Move BUG_ON_DATA_CORRUPTION to hardening options
  list: Introduce CONFIG_LIST_HARDENED
  list_debug: Introduce inline wrappers for debug checks
  compiler_types: Introduce the Clang __preserve_most function attribute
  gcc-plugins: Rename last_stmt() for GCC 14+
  selftests/harness: Actually report SKIP for signal tests
  x86/paravirt: Fix tlb_remove_table function callback prototype warning
  EISA: Replace all non-returning strlcpy with strscpy
  perf: Replace strlcpy with strscpy
  um: Remove strlcpy declaration
  ...

1 files changed, 2 insertions, 2 deletions

diff --git a/kernel/nsproxy.c b/kernel/nsproxy.c
index 80d9c6d77a45..15781acaac1c 100644
--- a/kernel/nsproxy.c
+++ b/kernel/nsproxy.c
@@ -30,7 +30,7 @@
 static struct kmem_cache *nsproxy_cachep;
 
 struct nsproxy init_nsproxy = {
-	.count			= ATOMIC_INIT(1),
+	.count			= REFCOUNT_INIT(1),
 	.uts_ns			= &init_uts_ns,
 #if defined(CONFIG_POSIX_MQUEUE) || defined(CONFIG_SYSVIPC)
 	.ipc_ns			= &init_ipc_ns,
@@ -55,7 +55,7 @@ static inline struct nsproxy *create_nsproxy(void)
 
 	nsproxy = kmem_cache_alloc(nsproxy_cachep, GFP_KERNEL);
 	if (nsproxy)
-		atomic_set(&nsproxy->count, 1);
+		refcount_set(&nsproxy->count, 1);
 	return nsproxy;
 }