Hello Dave,
When using crash on Linux 3.8, I found kmem -s is not working well.
After some investigations, I got to know commit
3c58346525d82625e68e24f071804c2dc057b6f4 changes the usage of
kmem_cache.array, nodelists is also stored in it, which caused original
code failed to work.
I made some fix, please refer to the attachment.
--
--
Regards
Qiao Nuohan
>From d08f6047418d3d59d4ec59e7991f57f849b46b4a Mon Sep 17 00:00:00 2001
From: qiaonuohan <qiaonuohan@xxxxxxxxxxxxxx>
Date: Thu, 14 Mar 2013 12:41:15 +0800
Subject: [PATCH] fix kmem -s(slab) to support Linux 3.7 and later
kmem_cache.array is extended to store nodelists, so the original
method to search array limit is out-of-range.
---
memory.c | 3 +--
1 files changed, 1 insertions(+), 2 deletions(-)
diff --git a/memory.c b/memory.c
index 02a6de1..5ceace1 100755
--- a/memory.c
+++ b/memory.c
@@ -8483,8 +8483,7 @@ kmem_cache_s_array_nodes:
"array cache array", RETURN_ON_ERROR))
goto bail_out;
- for (i = max_limit = 0; (i < ARRAY_LENGTH(kmem_cache_s_array)) &&
- cpudata[i]; i++) {
+ for (i = max_limit = 0; (i < kt->cpus) && cpudata[i]; i++) {
if (!readmem(cpudata[i]+OFFSET(array_cache_limit),
KVADDR, &limit, sizeof(int),
"array cache limit", RETURN_ON_ERROR))
--
1.7.1
--
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