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| author | Ard Biesheuvel <ardb@kernel.org> | 2024-03-28 07:42:57 +0100 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2024-04-13 13:01:47 +0200 |
| commit | 5d17986cbfd51d6f5ff16d8c832795d11ef6b8f4 (patch) | |
| tree | 57a30350116de2d34f0e77fc0239293337618375 | |
| parent | 7e0bd07ce9655656ad0c55f5dfff563eecffa82f (diff) | |
| download | linux-stable-5d17986cbfd51d6f5ff16d8c832795d11ef6b8f4.tar.gz linux-stable-5d17986cbfd51d6f5ff16d8c832795d11ef6b8f4.tar.bz2 linux-stable-5d17986cbfd51d6f5ff16d8c832795d11ef6b8f4.zip | |
gcc-plugins/stackleak: Avoid .head.text section
commit e7d24c0aa8e678f41457d1304e2091cac6fd1a2e upstream.
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>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
| -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 42f0252ee2a4..e5c63f806ef2 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; |