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authorXi Wang <xi.wang@gmail.com>2012-02-08 17:13:37 -0800
committerLinus Torvalds <torvalds@linux-foundation.org>2012-02-08 19:03:51 -0800
commit1ecd3c7ea76488c63b4b0a2561fd7eaf96cc8028 (patch)
tree3bc88fd0b4fd61c86141c66e86cf5492753bcd22 /mm
parent98e96852480566333f6dacd3223f0be15df34d60 (diff)
downloadlinux-1ecd3c7ea76488c63b4b0a2561fd7eaf96cc8028.tar.gz
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 481fe17e973fb9 ("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>
Diffstat (limited to 'mm')
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