btrfs: Exit gracefully when chunk map cannot be inserted to the tree

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It's entirely possible that a crafted btrfs image contains overlapping
chunks.

Although we can't detect such problem by tree-checker, it's not a
catastrophic problem, current extent map can already detect such problem
and return -EEXIST.

We just only need to exit gracefully and fail the mount.

Reported-by: Xu Wen <wen.xu@gatech.edu>
Link: https://bugzilla.kernel.org/show_bug.cgi?id=200409
Signed-off-by: Qu Wenruo <wqu@suse.com>
Reviewed-by: David Sterba <dsterba@suse.com>
Signed-off-by: David Sterba <dsterba@suse.com>

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Qu Wenruo 2018-08-01 10:37:20 +08:00 • committed by David Sterba

parent cf90d884b3

commit 64f64f43c8

1 changed files with 6 additions and 2 deletions

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fs/btrfs/volumes.c

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