udf: limit the maximum number of indirect extents in a row

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udf_next_aext() just follows extent pointers while extents are marked as
indirect. This can loop forever for corrupted filesystem. Limit number
the of indirect extents we are willing to follow in a row.

[JK: Updated changelog, limit, style]

Signed-off-by: Vegard Nossum <vegard.nossum@oracle.com>
Cc: stable@vger.kernel.org
Cc: Jan Kara <jack@suse.com>
Cc: Quentin Casasnovas <quentin.casasnovas@oracle.com>
Cc: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Jan Kara <jack@suse.cz>

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Vegard Nossum 2015-12-11 15:54:16 +01:00 • committed by Jan Kara

parent e7a4eb8612

commit b0918d9f47

1 changed files with 15 additions and 0 deletions

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fs/udf/inode.c

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