Xi Wang 1ecd3c7ea7 nilfs2: avoid overflowing segment numbers in nilfs_ioctl_clean_segments() ... nsegs is read from userspace. Limit its value and avoid overflowing nsegs * sizeof(__u64) in the subsequent call to memdup_user(). This patch complements 481fe17e97 ("nilfs2: potential integer overflow in nilfs_ioctl_clean_segments()"). Signed-off-by: Xi Wang <xi.wang@gmail.com> Cc: Haogang Chen <haogangchen@gmail.com> Acked-by: Ryusuke Konishi <konishi.ryusuke@lab.ntt.co.jp> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>		2012-02-08 19:03:51 -08:00
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