[PATCH] drivers/net/slip: prevent data alignment fault

[William Tambe <tambewilliam@xxxxxxxxx>]

>From c630b0aea59c1dced626c9da95fd71033763d606 Mon Sep 17 00:00:00 2001
From: William Tambe <tambewilliam@xxxxxxxxx>
Date: Sun, 1 Oct 2023 17:17:03 -0500
Subject: [PATCH] drivers/net/slip: prevent data alignment fault

---
 drivers/net/slip/slhc.c | 5 +++--
 1 file changed, 3 insertions(+), 2 deletions(-)

diff --git a/drivers/net/slip/slhc.c b/drivers/net/slip/slhc.c
index ba93bab948e0..78b07c46fe08 100644
--- a/drivers/net/slip/slhc.c
+++ b/drivers/net/slip/slhc.c
@@ -459,7 +459,8 @@ slhc_compress(struct slcompress *comp, unsigned
char *icp, int isize,
         *cpp = ocp;
         *cp++ = changes;
     }
-    *(__sum16 *)cp = csum;
+    *cp++ = (char)(csum&0xff);
+    *cp++ = (char)((csum>>8)&0xff);
     cp += 2;
 /* deltaS is now the size of the change section of the compressed header */
     memcpy(cp,new_seq,deltaS);    /* Write list of deltas */
@@ -534,7 +535,7 @@ slhc_uncompress(struct slcompress *comp, unsigned
char *icp, int isize)
     thp = &cs->cs_tcp;
     ip = &cs->cs_ip;

-    thp->check = *(__sum16 *)cp;
+    thp->check = (((__sum16)*cp)|(((__sum16)*(cp+1))<<8));
     cp += 2;

     thp->psh = (changes & TCP_PUSH_BIT) ? 1 : 0;
-- 
2.34.1