From: Dmitry V. Levin <ldv@altlinux.org>
Date: Mon, 17 Apr 2017 04:37:11 +0000 (+0000)
Subject: Fix the length argument passed from print_iovec to decode_netlink
X-Git-Tag: v4.17~76
X-Git-Url: https://granicus.if.org/sourcecode?a=commitdiff_plain;h=0653be4e01389d8b3048e59d9ea20383d083273b;p=strace

Fix the length argument passed from print_iovec to decode_netlink

* io.c (print_iovec): Pass the actual length to decode_netlink
instead of the original length.
* NEWS: Mention this fix.
---

diff --git a/NEWS b/NEWS
index 652aa813..ba3e36a2 100644
--- a/NEWS
+++ b/NEWS
@@ -25,6 +25,7 @@ Noteworthy changes in release ?.?? (????-??-??)
 * Bug fixes
   * Fixed decoding of flags argument of preadv2 and pwritev2 syscalls on x32.
   * Fixed the number of arguments and tracing flags of alpha specific syscalls.
+  * Fixed decoding of netlink messages received within struct msghdr.
 
 Noteworthy changes in release 4.16 (2017-02-14)
 ===============================================
diff --git a/io.c b/io.c
index a4f6b8e8..259ad343 100644
--- a/io.c
+++ b/io.c
@@ -94,7 +94,7 @@ print_iovec(struct tcb *tcp, void *elem_buf, size_t elem_size, void *data)
 				len = c->data_size;
 			if (c->data_size != (kernel_ulong_t) -1)
 				c->data_size -= len;
-			decode_netlink(tcp, iov[0], iov[1]);
+			decode_netlink(tcp, iov[0], len);
 			break;
 		default:
 			printaddr(iov[0]);