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After commit0652a3daa7("tracing: Fix CFI violation in probestub being called by tprobes"), there are many build errors when building ARCH=arm multi_v7_defconfig + CONFIG_CFI=y like: In file included from drivers/base/devres.c:17: In file included from drivers/base/trace.h:16: In file included from include/linux/tracepoint.h:23: include/linux/cfi.h:44:6: error: call to undeclared function 'get_kernel_nofault'; ISO C99 and later do not support implicit function declarations [-Wimplicit-function-declaration] 44 | if (get_kernel_nofault(hash, func - cfi_get_offset())) | ^ 1 error generated. get_kernel_nofault() is called in the generic version of cfi_get_func_hash() but nothing ensures uaccess.h is always included for a proper expansion and prototype. Include uaccess.h in cfi.h to clear up the errors. Cc: stable@vger.kernel.org Fixes:0652a3daa7("tracing: Fix CFI violation in probestub being called by tprobes") Signed-off-by: Nathan Chancellor <nathan@kernel.org> Acked-by: Masami Hiramatsu (Google) <mhiramat@kernel.org> Reviewed-by: Sami Tolvanen <samitolvanen@google.com> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>