linux-kernel - [PATCH] Lguest32 print hex on bad reads and writes

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Date:	Wed, 04 Apr 2007 15:14:31 -0400
From:	Steven Rostedt <rostedt@...dmis.org>
To:	virtualization@...ts.osdl.org,
	Glauber de Oliveira Costa <glommer@...il.com>,
	Rusty Russell <rusty@...tcorp.com.au>
Cc:	Linux Kernel Mailing List <linux-kernel@...r.kernel.org>
Subject: [PATCH] Lguest32 print hex on bad reads and writes

Currently the lguest32 error messages from bad reads and writes prints a
decimal integer for addresses. This is pretty annoying. So this patch
changes those to be hex outputs.

This is applied on top of my debug patch.

Signed-off-by: Steven Rostedt <rostedt@...dmis.org>

Index: linux-2.6.21-rc5-mm2/drivers/lguest/core.c
===================================================================
--- linux-2.6.21-rc5-mm2.orig/drivers/lguest/core.c
+++ linux-2.6.21-rc5-mm2/drivers/lguest/core.c
@@ -220,7 +220,7 @@ u8 lgread_u8(struct lguest *lg, u32 addr
 	/* Don't let them access lguest binary */
 	if (!lguest_address_ok(lg, addr)
 	    || get_user(val, (u32 __user *)addr) != 0)
-		kill_guest(lg, "bad read address %u", addr);
+		kill_guest(lg, "bad read address %x", addr);
 	return val;
 }
 
@@ -231,7 +231,7 @@ u16 lgread_u16(struct lguest *lg, u32 ad
 	/* Don't let them access lguest binary */
 	if (!lguest_address_ok(lg, addr)
 	    || get_user(val, (u32 __user *)addr) != 0)
-		kill_guest(lg, "bad read address %u", addr);
+		kill_guest(lg, "bad read address %x", addr);
 	return val;
 }
 
@@ -242,7 +242,7 @@ u32 lgread_u32(struct lguest *lg, u32 ad
 	/* Don't let them access lguest binary */
 	if (!lguest_address_ok(lg, addr)
 	    || get_user(val, (u32 __user *)addr) != 0)
-		kill_guest(lg, "bad read address %u", addr);
+		kill_guest(lg, "bad read address %x", addr);
 	return val;
 }
 
@@ -250,7 +250,7 @@ void lgwrite_u32(struct lguest *lg, u32 
 {
 	if (!lguest_address_ok(lg, addr)
 	    || put_user(val, (u32 __user *)addr) != 0)
-		kill_guest(lg, "bad write address %u", addr);
+		kill_guest(lg, "bad write address %x", addr);
 }
 
 void lgread(struct lguest *lg, void *b, u32 addr, unsigned bytes)
@@ -259,7 +259,7 @@ void lgread(struct lguest *lg, void *b, 
 	    || copy_from_user(b, (void __user *)addr, bytes) != 0) {
 		/* copy_from_user should do this, but as we rely on it... */
 		memset(b, 0, bytes);
-		kill_guest(lg, "bad read address %u len %u", addr, bytes);
+		kill_guest(lg, "bad read address %x len %u", addr, bytes);
 	}
 }
 
@@ -268,7 +268,7 @@ void lgwrite(struct lguest *lg, u32 addr
 	if (addr + bytes < addr
 	    || !lguest_address_ok(lg, addr+bytes)
 	    || copy_to_user((void __user *)addr, b, bytes) != 0)
-		kill_guest(lg, "bad write address %u len %u", addr, bytes);
+		kill_guest(lg, "bad write address %x len %u", addr, bytes);
 }
 
 static void set_ts(unsigned int guest_ts)


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