[PATCH] kdump proc vmcore size oveflow fix

[PATCH] kdump proc vmcore size oveflow fix

[Vivek Goyal]

o Couple of /proc/vmcore data structures overflow with 32bit systems having
  memory more than 4G. This patch fixes those.

Signed-off-by: Ken'ichi Ohmichi <oomichi@mxs.nes.nec.co.jp>
Signed-off-by: Vivek Goyal <vgoyal@in.ibm.com>
---

 fs/proc/vmcore.c        |    4 ++--
 include/linux/proc_fs.h |    2 +-
 2 files changed, 3 insertions(+), 3 deletions(-)

diff -puN include/linux/proc_fs.h~kdump-vmcore-size-overflow-bug-fix include/linux/proc_fs.h
--- linux-2.6.16-mm2-16M/include/linux/proc_fs.h~kdump-vmcore-size-overflow-bug-fix	2006-04-03 10:20:01.000000000 -0400
+++ linux-2.6.16-mm2-16M-root/include/linux/proc_fs.h	2006-04-03 10:20:01.000000000 -0400
@@ -79,7 +79,7 @@ struct kcore_list {
 struct vmcore {
 	struct list_head list;
 	unsigned long long paddr;
-	unsigned long size;
+	unsigned long long size;
 	loff_t offset;
 };
 
diff -puN fs/proc/vmcore.c~kdump-vmcore-size-overflow-bug-fix fs/proc/vmcore.c
--- linux-2.6.16-mm2-16M/fs/proc/vmcore.c~kdump-vmcore-size-overflow-bug-fix	2006-04-03 10:20:01.000000000 -0400
+++ linux-2.6.16-mm2-16M-root/fs/proc/vmcore.c	2006-04-03 10:34:08.000000000 -0400
@@ -103,8 +103,8 @@ static ssize_t read_vmcore(struct file *
 				size_t buflen, loff_t *fpos)
 {
 	ssize_t acc = 0, tmp;
-	size_t tsz, nr_bytes;
-	u64 start;
+	size_t tsz;
+	u64 start, nr_bytes;
 	struct vmcore *curr_m = NULL;
 
 	if (buflen == 0 || *fpos >= vmcore_size)
_