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[2/2] brd: Switch rd_size to unsigned long

Message ID 1477396407-28847-2-git-send-email-jack@suse.cz (mailing list archive)
State New, archived
Headers show

Commit Message

Jan Kara Oct. 25, 2016, 11:53 a.m. UTC 
Currently rd_size was int which lead to overflow and bogus device size
once the requested ramdisk size was 1 TB or more. Although these days
ramdisks with 1 TB size are mostly a mistake, the days when they are
useful are not far.

Reported-by: Bart Van Assche <bart.vanassche@sandisk.com>
Signed-off-by: Jan Kara <jack@suse.cz>
---
 drivers/block/brd.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)
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Patch

diff --git a/drivers/block/brd.c b/drivers/block/brd.c
index 8b22e4a04918..6af087068ab3 100644
--- a/drivers/block/brd.c
+++ b/drivers/block/brd.c
@@ -443,8 +443,8 @@  static int rd_nr = CONFIG_BLK_DEV_RAM_COUNT;
 module_param(rd_nr, int, S_IRUGO);
 MODULE_PARM_DESC(rd_nr, "Maximum number of brd devices");
 
-static int rd_size = CONFIG_BLK_DEV_RAM_SIZE;
-module_param(rd_size, int, S_IRUGO);
+static unsigned long rd_size = CONFIG_BLK_DEV_RAM_SIZE;
+module_param(rd_size, ulong, S_IRUGO);
 MODULE_PARM_DESC(rd_size, "Size of each RAM disk in kbytes.");
 
 static int max_part = 1;