This is a note to let you know that I've just added the patch titled latent_entropy: fix ARM build error on earlier gcc to the 4.9-stable tree which can be found at: http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary The filename of the patch is: latent_entropy-fix-arm-build-error-on-earlier-gcc.patch and it can be found in the queue-4.9 subdirectory. If you, or anyone else, feels it should not be added to the stable tree, please let <stable@xxxxxxxxxxxxxxx> know about it. >From 9988f4d577f42f43b7612d755477585f35424af7 Mon Sep 17 00:00:00 2001 From: Kees Cook <keescook@xxxxxxxxxxxx> Date: Fri, 16 Dec 2016 12:59:31 -0800 Subject: latent_entropy: fix ARM build error on earlier gcc From: Kees Cook <keescook@xxxxxxxxxxxx> commit 9988f4d577f42f43b7612d755477585f35424af7 upstream. This fixes build errors seen on gcc-4.9.3 or gcc-5.3.1 for an ARM: arm-soc/init/initramfs.c: In function 'error': arm-soc/init/initramfs.c:50:1: error: unrecognizable insn: } ^ (insn 26 25 27 5 (set (reg:SI 111 [ local_entropy.243 ]) (rotatert:SI (reg:SI 116 [ local_entropy.243 ]) (const_int -30 [0xffffffffffffffe2]))) -1 (nil)) Patch from PaX Team <pageexec@xxxxxxxxxxx> Reported-by: Arnd Bergmann <arnd@xxxxxxxx> Reported-by: Brad Spengler <spender@xxxxxxxxxxxxxx> Signed-off-by: Kees Cook <keescook@xxxxxxxxxxxx> Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx> --- scripts/gcc-plugins/latent_entropy_plugin.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) --- a/scripts/gcc-plugins/latent_entropy_plugin.c +++ b/scripts/gcc-plugins/latent_entropy_plugin.c @@ -328,9 +328,9 @@ static enum tree_code get_op(tree *rhs) op = LROTATE_EXPR; /* * This code limits the value of random_const to - * the size of a wide int for the rotation + * the size of a long for the rotation */ - random_const &= HOST_BITS_PER_WIDE_INT - 1; + random_const %= TYPE_PRECISION(long_unsigned_type_node); break; } Patches currently in stable-queue which might be from keescook@xxxxxxxxxxxx are queue-4.9/latent_entropy-fix-arm-build-error-on-earlier-gcc.patch -- To unsubscribe from this list: send the line "unsubscribe stable" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html