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| author | Jan Kara <jack@suse.cz> | 2018-05-25 12:51:25 -0400 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2018-06-26 08:08:07 +0800 |
| commit | e45ab2d6a89f9c31647efcb368a9c4378f2d76a9 (patch) | |
| tree | 4030cd28b4c5e43e4c718d78de11c7c6c6592bb1 /drivers/base | |
| parent | ade6e140df5c380dbb95605534e400fe27dbc5c0 (diff) | |
| download | linux-rt-e45ab2d6a89f9c31647efcb368a9c4378f2d76a9.tar.gz | |
ext4: fix fencepost error in check for inode count overflow during resize
commit 4f2f76f751433908364ccff82f437a57d0e6e9b7 upstream.
ext4_resize_fs() has an off-by-one bug when checking whether growing of
a filesystem will not overflow inode count. As a result it allows a
filesystem with 8192 inodes per group to grow to 64TB which overflows
inode count to 0 and makes filesystem unusable. Fix it.
Cc: stable@vger.kernel.org
Fixes: 3f8a6411fbada1fa482276591e037f3b1adcf55b
Reported-by: Jaco Kroon <jaco@uls.co.za>
Signed-off-by: Jan Kara <jack@suse.cz>
Signed-off-by: Theodore Ts'o <tytso@mit.edu>
Reviewed-by: Andreas Dilger <adilger@dilger.ca>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers/base')
0 files changed, 0 insertions, 0 deletions