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authorArd Biesheuvel <ardb@kernel.org>2024-03-28 07:42:57 +0100
committerKees Cook <keescook@chromium.org>2024-04-03 14:35:49 -0700
commite7d24c0aa8e678f41457d1304e2091cac6fd1a2e (patch)
tree5c9aedc7e789f113f2ab74fa902e99377a33954d /scripts
parent39cd87c4eb2b893354f3b850f916353f2658ae6f (diff)
gcc-plugins/stackleak: Avoid .head.text section
The .head.text section carries the startup code that runs with the MMU off or with a translation of memory that deviates from the ordinary one. So avoid instrumentation with the stackleak plugin, which already avoids .init.text and .noinstr.text entirely. Fixes: 48204aba801f1b51 ("x86/sme: Move early SME kernel encryption handling into .head.text") Reported-by: kernel test robot <oliver.sang@intel.com> Closes: https://lore.kernel.org/oe-lkp/202403221630.2692c998-oliver.sang@intel.com Signed-off-by: Ard Biesheuvel <ardb@kernel.org> Link: https://lore.kernel.org/r/20240328064256.2358634-2-ardb+git@google.com Signed-off-by: Kees Cook <keescook@chromium.org>
Diffstat (limited to 'scripts')
-rw-r--r--scripts/gcc-plugins/stackleak_plugin.c2
1 files changed, 2 insertions, 0 deletions
diff --git a/scripts/gcc-plugins/stackleak_plugin.c b/scripts/gcc-plugins/stackleak_plugin.c
index c5c2ce113c92..d20c47d21ad8 100644
--- a/scripts/gcc-plugins/stackleak_plugin.c
+++ b/scripts/gcc-plugins/stackleak_plugin.c
@@ -467,6 +467,8 @@ static bool stackleak_gate(void)
return false;
if (STRING_EQUAL(section, ".entry.text"))
return false;
+ if (STRING_EQUAL(section, ".head.text"))
+ return false;
}
return track_frame_size >= 0;