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(parent: c03b45b) | patch
ext4: fix overflow caused by missing cast in ext4_resize_fs()
authorJerry Lee <jerrylee@qnap.com>
Sun, 6 Aug 2017 05:18:31 +0000 (01:18 -0400)
committerTheodore Ts'o <tytso@mit.edu>
Sun, 6 Aug 2017 05:18:31 +0000 (01:18 -0400)
commitaec51758ce10a9c847a62a48a168f8c804c6e053
treea832c2ad23820173519a3cd79796636eafbe36e3tree | snapshot (tar.gz zip)
parentc03b45b853f5829816d871283c792e7527a7ded1commit | diff
ext4: fix overflow caused by missing cast in ext4_resize_fs()

On a 32-bit platform, the value of n_blcoks_count may be wrong during
the file system is resized to size larger than 2^32 blocks.  This may
caused the superblock being corrupted with zero blocks count.

Fixes: 1c6bd7173d66
Signed-off-by: Jerry Lee <jerrylee@qnap.com>
Signed-off-by: Theodore Ts'o <tytso@mit.edu>
Cc: stable@vger.kernel.org # 3.7+
fs/ext4/resize.c diff | blob | blame | history