Commit:
b6540de9b5c8 ("x86/percpu: Disable named address spaces for KASAN")
.. disabled support for named address spaces with KCSAN due to
the incompatibility issue between named AS and KCSAN.
GCC 13.3 has fixed this issue (GCC PR sanitizer/111736) so the
support for named address spaces can be re-enabled with sanitizers
for GCC compiler version >= 13.3.
Note that the patch considers GCC 14 to be fixed - if somebody is
using snapshots of the GCC 14 before the fix, they should upgrade.
Signed-off-by: Uros Bizjak <[email protected]>
Cc: Ingo Molnar <[email protected]>
Cc: Andy Lutomirski <[email protected]>
Cc: Josh Poimboeuf <[email protected]>
Cc: Linus Torvalds <[email protected]>
Cc: Ard Biesheuvel <[email protected]>
Cc: Jakub Jelinek <[email protected]>
Cc: Nick Desaulniers <[email protected]>
Cc: Sean Christopherson <[email protected]>
---
arch/x86/Kconfig | 11 +++++------
1 file changed, 5 insertions(+), 6 deletions(-)
diff --git a/arch/x86/Kconfig b/arch/x86/Kconfig
index 5fbe8ad39cc1..c62db6b853d7 100644
--- a/arch/x86/Kconfig
+++ b/arch/x86/Kconfig
@@ -2431,19 +2431,18 @@ endmenu
config CC_HAS_NAMED_AS
def_bool CC_IS_GCC && GCC_VERSION >= 90100
-config CC_HAS_NAMED_AS_FIXED_ASAN
+config CC_HAS_NAMED_AS_FIXED_SANITIZERS
def_bool CC_IS_GCC && GCC_VERSION >= 130300
config USE_X86_SEG_SUPPORT
def_bool y
depends on CC_HAS_NAMED_AS
#
- # -fsanitize=kernel-address (KASAN) is incompatible with named
- # address spaces with GCC < 13.3 - see GCC PR sanitizer/111736.
+ # -fsanitize=kernel-address (KASAN) and -fsanitize=thread
+ # (KCSAN) are incompatible with named address spaces with
+ # GCC < 13.3 - see GCC PR sanitizer/111736.
#
- depends on !KASAN || CC_HAS_NAMED_AS_FIXED_ASAN
- # -fsanitize=thread (KCSAN) is also incompatible.
- depends on !KCSAN
+ depends on !(KASAN || KCSAN) || CC_HAS_NAMED_AS_FIXED_SANITIZERS
config CC_HAS_SLS
def_bool $(cc-option,-mharden-sls=all)
--
2.44.0
The following commit has been merged into the x86/percpu branch of tip:
Commit-ID: 9ebe5500d4b25ee4cde04eec59a6764361a60709
Gitweb: https://git.kernel.org/tip/9ebe5500d4b25ee4cde04eec59a6764361a60709
Author: Uros Bizjak <[email protected]>
AuthorDate: Tue, 02 Apr 2024 14:19:08 +02:00
Committer: Ingo Molnar <[email protected]>
CommitterDate: Wed, 03 Apr 2024 08:59:15 +02:00
x86/percpu: Re-enable named address spaces with sanitizers for GCC 13.3+
Commit:
b6540de9b5c8 ("x86/percpu: Disable named address spaces for KASAN")
.. disabled support for named address spaces with KCSAN due to
the incompatibility issue between named AS and KCSAN.
GCC 13.3 has fixed this issue (GCC PR sanitizer/111736) so the
support for named address spaces can be re-enabled with sanitizers
for GCC compiler version >= 13.3.
[ Note that the patch considers GCC 14 to be fixed - if somebody is
using snapshots of the GCC 14 before the fix, they should upgrade. ]
Signed-off-by: Uros Bizjak <[email protected]>
Signed-off-by: Ingo Molnar <[email protected]>
Cc: Linus Torvalds <[email protected]>
Link: https://lore.kernel.org/r/[email protected]
---
arch/x86/Kconfig | 11 +++++------
1 file changed, 5 insertions(+), 6 deletions(-)
diff --git a/arch/x86/Kconfig b/arch/x86/Kconfig
index f1c020d..9332bad 100644
--- a/arch/x86/Kconfig
+++ b/arch/x86/Kconfig
@@ -2431,19 +2431,18 @@ endmenu
config CC_HAS_NAMED_AS
def_bool CC_IS_GCC && GCC_VERSION >= 90100
-config CC_HAS_NAMED_AS_FIXED_ASAN
+config CC_HAS_NAMED_AS_FIXED_SANITIZERS
def_bool CC_IS_GCC && GCC_VERSION >= 130300
config USE_X86_SEG_SUPPORT
def_bool y
depends on CC_HAS_NAMED_AS
#
- # -fsanitize=kernel-address (KASAN) is incompatible with named
- # address spaces with GCC < 13.3 - see GCC PR sanitizer/111736.
+ # -fsanitize=kernel-address (KASAN) and -fsanitize=thread
+ # (KCSAN) are incompatible with named address spaces with
+ # GCC < 13.3 - see GCC PR sanitizer/111736.
#
- depends on !KASAN || CC_HAS_NAMED_AS_FIXED_ASAN
- # -fsanitize=thread (KCSAN) is also incompatible.
- depends on !KCSAN
+ depends on !(KASAN || KCSAN) || CC_HAS_NAMED_AS_FIXED_SANITIZERS
config CC_HAS_SLS
def_bool $(cc-option,-mharden-sls=all)