Commit 80e8ff63 authored by Vivek Goyal's avatar Vivek Goyal Committed by Linus Torvalds
Browse files

[PATCH] kdump proc vmcore size oveflow fix 



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

Signed-off-by: default avatarKen'ichi Ohmichi <oomichi@mxs.nes.nec.co.jp>
Signed-off-by: default avatarVivek Goyal <vgoyal@in.ibm.com>
Cc: <stable@kernel.org>
Signed-off-by: default avatarAndrew Morton <akpm@osdl.org>
Signed-off-by: default avatarLinus Torvalds <torvalds@osdl.org>
parent 4c416ab7

fs/proc/vmcore.c

+2 −2
Original line number Diff line number Diff line
@@ -103,8 +103,8 @@ static ssize_t read_vmcore(struct file *file, char __user *buffer, 
				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)

include/linux/proc_fs.h

+1 −1
Original line number Diff line number Diff line
@@ -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;

};

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