From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from eggs.gnu.org ([2001:4830:134:3::10]:39130) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1aBuOP-0008Ig-6L for qemu-devel@nongnu.org; Wed, 23 Dec 2015 20:08:33 -0500 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1aBuOM-0005fs-0R for qemu-devel@nongnu.org; Wed, 23 Dec 2015 20:08:33 -0500 Received: from out11.biz.mail.alibaba.com ([205.204.114.131]:60538) by eggs.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1aBuOL-0005es-HZ for qemu-devel@nongnu.org; Wed, 23 Dec 2015 20:08:29 -0500 From: chengang@emindsoft.com.cn Date: Thu, 24 Dec 2015 09:07:33 +0800 Message-Id: <1450919253-3237-1-git-send-email-chengang@emindsoft.com.cn> Subject: [Qemu-devel] [PATCH] linux-user/mmap.c: Use end instead of real_end in target_mmap List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , To: riku.voipio@iki.fi, laurent@vivier.eu Cc: peter.maydell@linaro.org, Chen Gang , Chen Gang , qemu-devel@nongnu.org, rth@twiddle.net From: Chen Gang In this case, real_end is larger than end, which may cause mmap_frag process the incorrect memory region. Signed-off-by: Chen Gang --- linux-user/mmap.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/linux-user/mmap.c b/linux-user/mmap.c index 7b459d5..57b0361 100644 --- a/linux-user/mmap.c +++ b/linux-user/mmap.c @@ -536,7 +536,7 @@ abi_long target_mmap(abi_ulong start, abi_ulong len, int prot, /* handle the end of the mapping */ if (end < real_end) { ret = mmap_frag(real_end - qemu_host_page_size, - real_end - qemu_host_page_size, real_end, + real_end - qemu_host_page_size, end, prot, flags, fd, offset + real_end - qemu_host_page_size - start); if (ret == -1) -- 1.9.1