[Qemu-devel] [PATCH] Fix SIGSEGV crash in slirp networking code

[Stefan Weil]

Hello,

this patch fixes a bug which was introduced in r6288.
Please apply it to Qemu trunk.

See this discussion for details:

http://lists.gnu.org/archive/cgi-bin/namazu.cgi?query=Regression+in+networking+code+(SIGSEGV)&submit=Search&idxname=qemu-devel

Regards
Stefan Weil



Fix SIGSEGV crash in networking code (bug was introduced in r6288).
Thanks to Gleb Natapov for finding this fix.

Signed-off-by: Stefan Weil <address@hidden>

Index: trunk/slirp/ip_input.c
===================================================================
--- trunk.orig/slirp/ip_input.c 2009-02-05 22:16:34.000000000 +0100
+++ trunk/slirp/ip_input.c      2009-02-05 22:17:02.000000000 +0100
@@ -392,8 +392,7 @@
         * into the new buffer.
         */
        if (m->m_flags & M_EXT) {
-         int delta;
-         delta = (char *)ip - m->m_dat;
+         int delta = (char *)q - m->m_dat;
          q = (struct ipasfrag *)(m->m_ext + delta);
        }