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| author | Linus Torvalds <torvalds@linux-foundation.org> | 2024-10-17 09:51:03 -0700 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2024-10-17 09:51:03 -0700 |
| commit | 6efbea77b390604a7be7364583e19cd2d6a1291b (patch) | |
| tree | 28fe4f74c29df62a948e01c66abe4365e2499e88 /lib/Kconfig.kasan | |
| parent | c16e5c94c8c2f0c20f5ce594188f84fd00040378 (diff) | |
| parent | 7aed6a2c51ffc97a126e0ea0c270fab7af97ae18 (diff) | |
| download | lwn-6efbea77b390604a7be7364583e19cd2d6a1291b.tar.gz lwn-6efbea77b390604a7be7364583e19cd2d6a1291b.zip | |
Merge tag 'arm64-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux
Pull arm64 fixes from Will Deacon:
- Disable software tag-based KASAN when compiling with GCC, as
functions are incorrectly instrumented leading to a crash early
during boot
- Fix pkey configuration for kernel threads when POE is enabled
- Fix invalid memory accesses in uprobes when targetting load-literal
instructions
* tag 'arm64-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux:
kasan: Disable Software Tag-Based KASAN with GCC
Documentation/protection-keys: add AArch64 to documentation
arm64: set POR_EL0 for kernel threads
arm64: probes: Fix uprobes for big-endian kernels
arm64: probes: Fix simulate_ldr*_literal()
arm64: probes: Remove broken LDR (literal) uprobe support
Diffstat (limited to 'lib/Kconfig.kasan')
| -rw-r--r-- | lib/Kconfig.kasan | 7 |
1 files changed, 5 insertions, 2 deletions
diff --git a/lib/Kconfig.kasan b/lib/Kconfig.kasan index 98016e137b7f..233ab2096924 100644 --- a/lib/Kconfig.kasan +++ b/lib/Kconfig.kasan @@ -22,8 +22,11 @@ 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-option, -fsanitize=kernel-hwaddress) + def_bool !CC_IS_GCC && $(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. @@ -98,7 +101,7 @@ config KASAN_SW_TAGS help Enables Software Tag-Based KASAN. - Requires GCC 11+ or Clang. + Requires Clang. Supported only on arm64 CPUs and relies on Top Byte Ignore. |