From: Junling Zheng <zhengjunling@xxxxxxxxxx> Date: Tue, 2 Jun 2015 12:05:32 +0800 > So, the problem commit is 281c9c36 (net: compat: Update > get_compat_msghdr() to match copy_msghdr_from_user() behaviour), > which fixes db31c55a6fb2 and brings the get_compat_msghdr() in line > with copy_msghdr_from_user(). Upstream this got fixed by: 08adb7dabd4874cc5666b4490653b26534702ce0 So the part that makes us not unconditionally return -EFAULT needs to be backported, and that's probably equivalent to the patch your proposed which therefore should be applied. -- 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