ext2fs_open2() was only looking at s_blocks_count, and
when it wrapped to a low number, it was failing the test of:
fs->super->s_first_data_block >= fs->super->s_blocks_count
which made the superblock look corrupt.
Signed-off-by: Eric Sandeen <sandeen@xxxxxxxxxx>
---
Patch is against the pu branch
Index: e2fsprogs/lib/ext2fs/openfs.c
===================================================================
--- e2fsprogs.orig/lib/ext2fs/openfs.c
+++ e2fsprogs/lib/ext2fs/openfs.c
@@ -288,7 +288,7 @@ errcode_t ext2fs_open2(const char *name,
blocks_per_group > EXT2_MAX_BLOCKS_PER_GROUP(fs->super) ||
fs->inode_blocks_per_group > EXT2_MAX_INODES_PER_GROUP(fs->super) ||
EXT2_DESC_PER_BLOCK(fs->super) == 0 ||
- fs->super->s_first_data_block >= fs->super->s_blocks_count) {
+ fs->super->s_first_data_block >= ext2fs_blocks_count(fs->super)) {
retval = EXT2_ET_CORRUPT_SUPERBLOCK;
goto cleanup;
}
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