binfmt_elf: add ELF_HWCAP2 to compat auxv entries

Add ELF_HWCAP2 to the set of auxv entries that is passed to
a 32-bit ELF program running in 32-bit compat mode under a
64-bit kernel.

Signed-off-by: Ard Biesheuvel <ard.biesheuvel@linaro.org>
Acked-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>

1 files changed, 5 insertions, 0 deletions

diff --git a/fs/compat_binfmt_elf.c b/fs/compat_binfmt_elf.c
index a81147e2e4ef..4d24d17bcfc1 100644
--- a/fs/compat_binfmt_elf.c
+++ b/fs/compat_binfmt_elf.c
@@ -88,6 +88,11 @@ static void cputime_to_compat_timeval(const cputime_t cputime,
 #define ELF_HWCAP               COMPAT_ELF_HWCAP
 #endif
 
+#ifdef  COMPAT_ELF_HWCAP2
+#undef  ELF_HWCAP2
+#define ELF_HWCAP2              COMPAT_ELF_HWCAP2
+#endif
+
 #ifdef  COMPAT_ARCH_DLINFO
 #undef  ARCH_DLINFO
 #define ARCH_DLINFO             COMPAT_ARCH_DLINFO