This patch fixes an invalid memory access issue caused by
the fs->Ext2FsGDSize is smaller than the size of EXT2GD.
The EXT2GD is a 64-byte structure, but fs->Ext2FsGDSize is not always 32.
Before this patch, Ext2fsOpen() allocates a smaller memory than expected:
i.e., Ext2FsGrpDes = AllocatePool (Ext2FsGDSize * Ext2FsNumCylinder);
When ReadGDBlock() loads data (E2FS_CGLOAD) into fs->Ext2FsGrpDes,
it possibly accesses mem out of the allocated Ext2FsGrpDes space.
This patch loads each element into fs->Ext2FsGrpDes.
This patch also
1. prints informative messages when OS Loader fails to load Linux files.
2. increase EHL's PLD_HEAP_SIZE (since the size of initrd in Ubuntu LiveCD
is over 130MB)
Test method:
1. create a huge EXT FS (says, at least 36GB)
2. In the fs, place the following file/dir:
a: non-empty file
b: dir
b/c: non-empty file
3. boot with SBL OS Loader and enter Shell.
4. execute "fs init <...skip...>" to init the fs
5. execute "fs ls"
6. execute "fs ls b/c"
7. execute "fs load a"
8. execute "fs load b/c"
Verify:
1. 10MB/10GB/100GB/200GB EXT2/EXT3/EXT4 FS
2. EHL CRB
Signed-off-by: Stanley Chang <stanley.chang@intel.com>
Stanley Chang
b6f150c0ea