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6b0ddd1fbc
'log2blksz' in blk_desc structure must always be initialized, otherwise
it will cause a lot of weird failures in file operations.
For example, fs_set_blk_dev[_with_part]() examines a block device against
every file system with its probe function. In particular, ext4 file
system's ext4_probe() will calls fs_devread() to fetch a super block.
If log2blksz is 0, the actual 'read' size, i.e. block_len >> log2blksz, is
much bigger than a buffer's size, and it can end up with memory corruption.
Signed-off-by: AKASHI Takahiro <takahiro.akashi@linaro.org>
Fixes:
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||
|---|---|---|
| .. | ||
| Kconfig | ||
| Makefile | ||
| virtio_blk.c | ||
| virtio_blk.h | ||
| virtio_mmio.c | ||
| virtio_mmio.h | ||
| virtio_net.c | ||
| virtio_net.h | ||
| virtio_pci_legacy.c | ||
| virtio_pci_modern.c | ||
| virtio_pci.h | ||
| virtio_ring.c | ||
| virtio_rng.c | ||
| virtio_sandbox.c | ||
| virtio-uclass.c | ||