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| author | Marco Elver <elver@google.com> | 2024-10-21 15:00:11 +0300 |
|---|---|---|
| committer | Will Deacon <will@kernel.org> | 2024-10-23 18:04:30 +0300 |
| commit | 237ab03e301d21cc8fed631a8cdb5076c92ac263 (patch) | |
| tree | 742a1aef6e797f1754fba6b84b4aa60fc5142121 /lib | |
| parent | 894b00a3350c560990638bdf89bdf1f3d5491950 (diff) | |
| download | linux-237ab03e301d21cc8fed631a8cdb5076c92ac263.tar.xz | |
Revert "kasan: Disable Software Tag-Based KASAN with GCC"
This reverts commit 7aed6a2c51ffc97a126e0ea0c270fab7af97ae18.
Now that __no_sanitize_address attribute is fixed for KASAN_SW_TAGS with
GCC, allow re-enabling KASAN_SW_TAGS with GCC.
Cc: Andrey Konovalov <andreyknvl@gmail.com>
Cc: Andrew Pinski <pinskia@gmail.com>
Cc: Mark Rutland <mark.rutland@arm.com>
Cc: Will Deacon <will@kernel.org>
Signed-off-by: Marco Elver <elver@google.com>
Reviewed-by: Andrey Konovalov <andreyknvl@gmail.com>
Link: https://lore.kernel.org/r/20241021120013.3209481-2-elver@google.com
Signed-off-by: Will Deacon <will@kernel.org>
Diffstat (limited to 'lib')
| -rw-r--r-- | lib/Kconfig.kasan | 7 |
1 files changed, 2 insertions, 5 deletions
diff --git a/lib/Kconfig.kasan b/lib/Kconfig.kasan index 233ab2096924..98016e137b7f 100644 --- a/lib/Kconfig.kasan +++ b/lib/Kconfig.kasan @@ -22,11 +22,8 @@ config ARCH_DISABLE_KASAN_INLINE config CC_HAS_KASAN_GENERIC def_bool $(cc-option, -fsanitize=kernel-address) -# GCC appears to ignore no_sanitize_address when -fsanitize=kernel-hwaddress -# is passed. See https://bugzilla.kernel.org/show_bug.cgi?id=218854 (and -# the linked LKML thread) for more details. config CC_HAS_KASAN_SW_TAGS - def_bool !CC_IS_GCC && $(cc-option, -fsanitize=kernel-hwaddress) + def_bool $(cc-option, -fsanitize=kernel-hwaddress) # This option is only required for software KASAN modes. # Old GCC versions do not have proper support for no_sanitize_address. @@ -101,7 +98,7 @@ config KASAN_SW_TAGS help Enables Software Tag-Based KASAN. - Requires Clang. + Requires GCC 11+ or Clang. Supported only on arm64 CPUs and relies on Top Byte Ignore. |