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| author | Samuel Holland <samuel.holland@sifive.com> | 2024-01-22 09:52:01 -0800 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2024-02-23 09:51:28 +0100 |
| commit | 204eda8c14a7c29f47f117ed01363432163184aa (patch) | |
| tree | 35dad2f32f3b35baac3d2e51eace91e197242e6e /arch | |
| parent | 97395c4e649fb30e63d8be62e8d0d469a5cacccc (diff) | |
| download | linux-stable-204eda8c14a7c29f47f117ed01363432163184aa.tar.gz linux-stable-204eda8c14a7c29f47f117ed01363432163184aa.tar.bz2 linux-stable-204eda8c14a7c29f47f117ed01363432163184aa.zip | |
scs: add CONFIG_MMU dependency for vfree_atomic()
commit 6f9dc684cae638dda0570154509884ee78d0f75c upstream.
The shadow call stack implementation fails to build without CONFIG_MMU:
ld.lld: error: undefined symbol: vfree_atomic
>>> referenced by scs.c
>>> kernel/scs.o:(scs_free) in archive vmlinux.a
Link: https://lkml.kernel.org/r/20240122175204.2371009-1-samuel.holland@sifive.com
Fixes: a2abe7cbd8fe ("scs: switch to vmapped shadow stacks")
Signed-off-by: Samuel Holland <samuel.holland@sifive.com>
Reviewed-by: Sami Tolvanen <samitolvanen@google.com>
Cc: Will Deacon <will@kernel.org>
Cc: <stable@vger.kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'arch')
| -rw-r--r-- | arch/Kconfig | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/arch/Kconfig b/arch/Kconfig index f4b210ab0612..a27129d48667 100644 --- a/arch/Kconfig +++ b/arch/Kconfig @@ -681,6 +681,7 @@ config SHADOW_CALL_STACK bool "Shadow Call Stack" depends on ARCH_SUPPORTS_SHADOW_CALL_STACK depends on DYNAMIC_FTRACE_WITH_ARGS || DYNAMIC_FTRACE_WITH_REGS || !FUNCTION_GRAPH_TRACER + depends on MMU help This option enables the compiler's Shadow Call Stack, which uses a shadow stack to protect function return addresses from |