Btrfs: add one more sanity check for shared ref type

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Every shared ref has a parent tree block, which can be get from
btrfs_extent_inline_ref_offset().  And the tree block must be aligned
to the nodesize, so we'd know this inline ref is not valid if this
block's bytenr is not aligned to the nodesize, in which case, most
likely the ref type has been misused.

This adds the above mentioned check and also updates
print_extent_item() called by btrfs_print_leaf() to point out the
invalid ref while printing the tree structure.

Signed-off-by: Liu Bo <bo.li.liu@oracle.com>
Signed-off-by: David Sterba <dsterba@suse.com>

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This commit is contained in:

Liu Bo 2017-08-18 15:15:24 -06:00 • committed by David Sterba

parent cdccee993f

commit 64ecdb647d

2 changed files with 46 additions and 10 deletions

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29

fs/btrfs/extent-tree.c

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27

fs/btrfs/print-tree.c

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