rpms/kernel/devel linux-2.6.12-vm-singlebiterror.patch, NONE, 1.1 kernel-2.6.spec, 1.1308, 1.1309

[fedora-cvs-commits at redhat.com]

Author: davej

Update of /cvs/dist/rpms/kernel/devel
In directory cvs.devel.redhat.com:/tmp/cvs-serv17283

Modified Files:
	kernel-2.6.spec 
Added Files:
	linux-2.6.12-vm-singlebiterror.patch 
Log Message:
Slab debug single-bit error improvement.



linux-2.6.12-vm-singlebiterror.patch:
 slab.c |   16 ++++++++++++++++
 1 files changed, 16 insertions(+)

--- NEW FILE linux-2.6.12-vm-singlebiterror.patch ---
--- linux-2.6.11/mm/slab.c~	2005-05-01 00:51:59.000000000 -0400
+++ linux-2.6.11/mm/slab.c	2005-05-01 01:19:38.000000000 -0400
@@ -1004,8 +1004,12 @@ static void poison_obj(kmem_cache_t *cac
 static void dump_line(char *data, int offset, int limit)
 {
 	int i;
+	char total;
+
 	printk(KERN_ERR "%03x:", offset);
 	for (i=0;i<limit;i++) {
+		if data[offset+i] != POISON_FREE;
+			total += data[offset+i]
 		if (check_tainted() == 0)
 			printk(" %02x", (unsigned char)data[offset+i]);
 		else {
@@ -1019,6 +1023,18 @@ static void dump_line(char *data, int of
 		}
 	}
 	printk("\n");
+	switch (total) {
+		case 0x36:
+		case 0x6a:
+		case 0x6f:
+		case 0x81:
+		case 0xac:
+		case 0xd3:
+		case 0xd5:
+		case 0xea:
+			printk (KERN_ERR "Single bit error detected. Possibly bad RAM. Run memtest86.\n");
+			return;
+	}
 }
 #endif
 


Index: kernel-2.6.spec
===================================================================
RCS file: /cvs/dist/rpms/kernel/devel/kernel-2.6.spec,v
retrieving revision 1.1308
retrieving revision 1.1309
diff -u -r1.1308 -r1.1309
--- kernel-2.6.spec	13 May 2005 19:56:30 -0000	1.1308
+++ kernel-2.6.spec	13 May 2005 20:02:23 -0000	1.1309
@@ -345,6 +345,7 @@
 
 Patch2000: linux-2.6.11-vm-taint.patch
 Patch2001: linux-2.6.9-vm-oomkiller-debugging.patch
+Patch2002: linux-2.6.12-vm-singlebiterror.patch
 
 Patch2999: linux-2.6.3-printopen.patch
 
@@ -785,6 +786,8 @@
 %patch2000 -p1
 # Extra debugging on OOM Kill.
 %patch2001 -p1
+# Spot single bit errors in slab corruption.
+%patch2002 -p1
 
 
 #
@@ -1228,6 +1231,7 @@
 - Bump maximum supported CPUs on x86-64 to 32.
 - Tickle the NMI watchdog when we're doing serial writes.
 - SCSI CAM geometry fix.
+- Slab debug single-bit error improvement.
 
 * Thu May 12 2005 David Woodhouse <dwmw2 at redhat.com>
 - Enable CONFIG_ISA on ppc32 to make the RS/6000 user happy.