Commit a6dc8c04 authored Jun 17, 2012 by Janne Kalliomäki Committed by Linus Torvalds Jun 17, 2012

hfsplus: fix overflow in sector calculations in hfsplus_submit_bio



The variable io_size was unsigned int, which caused the wrong sector number
to be calculated after aligning it. This then caused mount to fail with big
volumes, as backup volume header information was searched from a
wrong sector.

Signed-off-by: Janne Kalliomäki <janne@tuxera.com>
Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

parent 485802a6

fs/hfsplus/wrapper.c

+1 −1

Original line number	Original line	Diff line number	Diff line
	@@ -56,7 +56,7 @@ int hfsplus_submit_bio(struct super_block *sb, sector_t sector,
	DECLARE_COMPLETION_ONSTACK(wait);		DECLARE_COMPLETION_ONSTACK(wait);
	struct bio *bio;		struct bio *bio;
	int ret = 0;		int ret = 0;
	unsigned int io_size;		u64 io_size;
	loff_t start;		loff_t start;
	int offset;		int offset;