Re: [U-Boot] fs: btrfs: Fix tree traversal with btrfs_next_slot()

On Fri, Sep 07, 2018 at 12:59:30PM +0300, Yevgeny Popovych wrote:

When traversing slots in a btree (via btrfs_path) with btrfs_next_slot(), we didn't correctly identify that the last slot in the leaf was reached and we should jump to the next leaf.

This could lead to any kind of runtime errors or corruptions, like:

• file data not being read at all, or is read partially
• file is read but is corrupted
• (any) metadata being corrupted or not read at all, etc

The easiest way to reproduce this is to read a large enough file that its EXTENT_DATA items don't fit into a single leaf.

Signed-off-by: Yevgeny Popovych yevgenyp@pointgrab.com Cc: Marek Behun marek.behun@nic.cz Tested-by: Marek Behún marek.behun@nic.cz

Applied to u-boot/master, thanks!