On Mon, Jun 29, 2020 at 12:53:47PM -0700, Nick Desaulniers wrote:

On Sun, Jun 28, 2020 at 11:18 PM Kees Cook [off-list ref] wrote:

quoted

Fix a case of needless quotes in __section(), which Clang doesn't like.

Acked-by: Will Deacon <will@kernel.org>
Signed-off-by: Kees Cook <redacted>

Yep, I remember bugs from this.  Probably should scan the kernel for
other instances of this.  +Joe for checkpatch.pl validation.

I think the others are safe because they're in macros:

$ git grep -4 '__section("'
include/linux/compiler.h-# define KENTRY(sym)                                           \
include/linux/compiler.h-       extern typeof(sym) sym;                                 \
include/linux/compiler.h-       static const unsigned long __kentry_##sym               \
include/linux/compiler.h-       __used                                                  \
include/linux/compiler.h:       __section("___kentry" "+" #sym )                        \
include/linux/compiler.h-       = (unsigned long)&sym;
--
include/linux/export.h-#define __ksym_marker(sym)       \
include/linux/export.h: static int __ksym_marker_##sym[0] __section(".discard.ksym") __used
--
include/linux/srcutree.h-# define __DEFINE_SRCU(name, is_static)                                \
include/linux/srcutree.h-       is_static struct srcu_struct name;                              \
include/linux/srcutree.h-       struct srcu_struct * const __srcu_struct_##name                 \
include/linux/srcutree.h:               __section("___srcu_struct_ptrs") = &name

Reviewed-by: Nick Desaulniers <redacted>

Thanks!

-- 
Kees Cook

_______________________________________________
linux-arm-kernel mailing list
linux-arm-kernel@lists.infradead.org
http://lists.infradead.org/mailman/listinfo/linux-arm-kernel