3.8-stable review patch. If anyone has any objections, please let me know.
------------------ From: Theodore Ts'o <[email protected]> commit 3f8a6411fbada1fa482276591e037f3b1adcf55b upstream. Addresses-Red-Hat-Bugzilla: #913245 Reported-by: Eric Sandeen <[email protected]> Signed-off-by: "Theodore Ts'o" <[email protected]> Reviewed-by: Carlos Maiolino <[email protected]> Signed-off-by: Lingzhu Xiang <[email protected]> Signed-off-by: Greg Kroah-Hartman <[email protected]> --- fs/ext4/resize.c | 4 ++++ 1 file changed, 4 insertions(+) --- a/fs/ext4/resize.c +++ b/fs/ext4/resize.c @@ -1880,6 +1880,10 @@ retry: return 0; ext4_get_group_no_and_offset(sb, n_blocks_count - 1, &n_group, &offset); + if (n_group > (0xFFFFFFFFUL / EXT4_INODES_PER_GROUP(sb))) { + ext4_warning(sb, "resize would cause inodes_count overflow"); + return -EINVAL; + } ext4_get_group_no_and_offset(sb, o_blocks_count - 1, &o_group, &offset); n_desc_blocks = num_desc_blocks(sb, n_group + 1); -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to [email protected] More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
