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[Qemu-devel] [PATCH] slirp: Use lduw_be_p in slirp_input

From: Richard Henderson
Subject: [Qemu-devel] [PATCH] slirp: Use lduw_be_p in slirp_input
Date: Wed, 26 Dec 2018 14:42:54 +1100

The pointer may be unaligned, so we must use our routines for that.
At the same time, we might as well use the big-endian version
instead of ntohs.

This fixes sparc64 host SIGBUS during pxe boot.

Signed-off-by: Richard Henderson <address@hidden>
 slirp/slirp.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/slirp/slirp.c b/slirp/slirp.c
index 322edf51eb..a116f43878 100644
--- a/slirp/slirp.c
+++ b/slirp/slirp.c
@@ -851,7 +851,7 @@ void slirp_input(Slirp *slirp, const uint8_t *pkt, int 
     if (pkt_len < ETH_HLEN)
-    proto = ntohs(*(uint16_t *)(pkt + 12));
+    proto = lduw_be_p(pkt + 12);
     switch(proto) {
     case ETH_P_ARP:
         arp_input(slirp, pkt, pkt_len);

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