Btrfs: add validadtion checks for chunk loading

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To prevent fuzzed filesystem images from panic the whole system,
we need various validation checks to refuse to mount such an image
if btrfs finds any invalid value during loading chunks, including
both sys_array and regular chunks.

Note that these checks may not be sufficient to cover all corner cases,
feel free to add more checks.

Reported-by: Vegard Nossum <vegard.nossum@oracle.com>
Reported-by: Quentin Casasnovas <quentin.casasnovas@oracle.com>
Reviewed-by: David Sterba <dsterba@suse.com>
Signed-off-by: Liu Bo <bo.li.liu@oracle.com>
Signed-off-by: David Sterba <dsterba@suse.com>

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Liu Bo 2016-06-03 12:05:15 -07:00 • committed by David Sterba

parent 99e3ecfcb9

commit e06cd3dd7c

1 changed files with 67 additions and 15 deletions

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fs/btrfs/volumes.c

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