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| author | Ard Biesheuvel <ardb@kernel.org> | 2024-03-28 07:42:57 +0100 |
|---|---|---|
| committer | Kees Cook <keescook@chromium.org> | 2024-04-03 14:35:49 -0700 |
| commit | e7d24c0aa8e678f41457d1304e2091cac6fd1a2e (patch) | |
| tree | 5c9aedc7e789f113f2ab74fa902e99377a33954d /scripts/gcc-plugins | |
| parent | 39cd87c4eb2b893354f3b850f916353f2658ae6f (diff) | |
| download | lwn-e7d24c0aa8e678f41457d1304e2091cac6fd1a2e.tar.gz lwn-e7d24c0aa8e678f41457d1304e2091cac6fd1a2e.zip | |
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/gcc-plugins')
| -rw-r--r-- | scripts/gcc-plugins/stackleak_plugin.c | 2 |
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; |