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[PATCH] Add missing overflow check in get_blkdev_list

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Patch to clean up missing overflow check in get_blkdev_list.  The printf
which adds the "Block Devices" string in /proc/devices can overflow the
presented page if get_chrdev_list eats up the entire 4k space.

Signed-off-by: Neil Horman <nhorman@redhat.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
This commit is contained in:
Neil Horman 2005-09-06 15:17:30 -07:00 committed by Linus Torvalds
parent f23ef184b4
commit f62c6d0a26
1 changed files with 1 additions and 1 deletions
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2
drivers/block/genhd.c
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@ -45,7 +45,7 @@ int get_blkdev_list(char *p, int used)
struct blk_major_name *n;
int i, len;
len = sprintf(p, "\nBlock devices:\n");
len = snprintf(p, (PAGE_SIZE-used), "\nBlock devices:\n");
down(&block_subsys_sem);
for (i = 0; i < ARRAY_SIZE(major_names); i++) {