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Hermès Bélusca-Maïto
d436f2e76b
Cherry-picking commit https://github.com/bobranten/Ext4Fsd/commit/3158b917a20019d2fdc3fb84b9ac4ac03af7b862 See https://github.com/bobranten/Ext4Fsd/issues/83 for more information, and debug traces. ## How to reproduce: - Format a partition in Ext2 with Paragon Hard Disk Manager 2010 Professional. - Compile ReactOS with MSVC, ensuring that the driver is compiled with `EXT2_HTREE_INDEX` defined and set to 1, and with Run-time error checks enabled with the `/RTC1` flag (this is the default in our source tree). - Install ReactOS on this partition. ## What's being observed: After reboot, some filesystem paths are accessed, and the code inside the `#ifdef EXT2_HTREE_INDEX` block is taken (in ext2/src/dirctl.c#L777-L794). For some reasons, the retrieved `rc` doesn't get the "expected" value and the `goto errorout;` path is taken. After this label, `FileIndex` was reset to `ByteOffset`, which remained uninitialized. A bugcheck ensues because of the failed check (usage of uninitialized variable).