linux-kernel - [PATCH] oprofile: vma_map: fix test on overlay_tbl

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Message-ID: <48074F18.7050802@tiscali.nl>
Date:	Thu, 17 Apr 2008 15:22:32 +0200
From:	Roel Kluin <12o3l@...cali.nl>
To:	phil.el@...adoo.fr
CC:	oprofile-list@...ts.sf.net, lkml <linux-kernel@...r.kernel.org>
Subject: [PATCH] oprofile: vma_map: fix test on overlay_tbl_offset

Offset is unsigned and when an address isn't found in the vma map
vma_map_lookup() returns the vma physical address + 0x10000000.

Signed-off-by: Roel Kluin <12o3l@...cali.nl>
---
diff --git a/arch/powerpc/oprofile/cell/vma_map.c b/arch/powerpc/oprofile/cell/vma_map.c
index 9a93217..1c28e2e 100644
--- a/arch/powerpc/oprofile/cell/vma_map.c
+++ b/arch/powerpc/oprofile/cell/vma_map.c
@@ -229,7 +229,7 @@ struct vma_to_fileoffset_map *create_vma_map(const struct spu *aSpu,
 	 */
 	overlay_tbl_offset = vma_map_lookup(map, ovly_table_sym,
 					    aSpu, &grd_val);
-	if (overlay_tbl_offset < 0) {
+	if (overlay_tbl_offset >= 0x10000000) {
 		printk(KERN_ERR "SPU_PROF: "
 		       "%s, line %d: Error finding SPU overlay table\n",
 		       __FUNCTION__, __LINE__);

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