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If we have CONFIG_SECCOMP but not CONFIG_HAVE_ARCH_SECCOMP_FILTER
we get a compilation error:
../kernel/entry/common.c: In function 'syscall_trace_enter':
../kernel/entry/common.c:55:23: error: implicit declaration of function '__secure_computing' [-Werror=implicit-function-declaration]
55 | ret = __secure_computing(NULL);
| ^~~~~~~~~~~~~~~~~~
This is because generic entry calls __secure_computing()
unconditionally.
Provide the needed stub similar to how current ARM does
this by calling secure_computing_strict() in the absence
of secure_computing(). This is similar to what is done for
ARM in arch/arm/kernel/ptrace.c.
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Link: https://lore.kernel.org/r/20241022-seccomp-compile-error-v2-1-c9f08a4f8ebb@linaro.org
Signed-off-by: Kees Cook <kees@kernel.org>