btrfs: export: handle invalid inode or root reference in btrfs_get_parent()

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The get_parent handler looks up a parent of a given dentry, this can be
either a subvolume or a directory. The search is set up with offset -1
but it's never expected to find such item, as it would break allowed
range of inode number or a root id. This means it's a corruption (ext4
also returns this error code).

Reviewed-by: Josef Bacik <josef@toxicpanda.com>
Reviewed-by: Anand Jain <anand.jain@oracle.com>
Signed-off-by: David Sterba <dsterba@suse.com>

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David Sterba 2024-01-19 21:19:18 +01:00

parent a4259b6c19

commit 26b66d1d36

1 changed files with 8 additions and 1 deletions

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fs/btrfs/export.c

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