Merge tag 'hardening-v6.19-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/kees/linux

Pull hardening updates from Kees Cook:

 - string: Add missing kernel-doc return descriptions (Kriish Sharma)

 - Update some mis-typed allocations

   These correct some accidentally wrong types used in allocations (that
   didn't affect the resulting size) that never got picked up from the
   batch I sent a few months ago.

 - Enable GCC diagnostic context for value-tracking warnings

   This results in better GCC diagnostics for the value range tracking,
   so we can get better visibility into where those values are coming
   from when we get out-of-bounds warnings at compile time.

* tag 'hardening-v6.19-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/kees/linux:
  kbuild: Enable GCC diagnostic context for value-tracking warnings
  string: Add missing kernel-doc return descriptions
  media: iris: Cast iris_hfi_gen2_get_instance() allocation type
  drm/plane: Remove const qualifier from plane->modifiers allocation type
  comedi: Adjust range_table_list allocation type

1 files changed, 3 insertions, 0 deletions

diff --git a/Makefile b/Makefile
index e61f1300fea0..31bbbe5449db 100644
--- a/Makefile
+++ b/Makefile
@@ -940,6 +940,9 @@ KBUILD_CFLAGS += $(call cc-option,-fzero-init-padding-bits=all)
 # for the randomize_kstack_offset feature. Disable it for all compilers.
 KBUILD_CFLAGS	+= $(call cc-option, -fno-stack-clash-protection)
 
+# Get details on warnings generated due to GCC value tracking.
+KBUILD_CFLAGS	+= $(call cc-option, -fdiagnostics-show-context=2)
+
 # Clear used registers at func exit (to reduce data lifetime and ROP gadgets).
 ifdef CONFIG_ZERO_CALL_USED_REGS
 KBUILD_CFLAGS	+= -fzero-call-used-regs=used-gpr