ext4: always check ext4_ext_find_extent result

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Where are some places where logic guaranties us that extent we are
searching exits, but this may not be true due to on-disk data
corruption. If such corruption happens we must prevent possible
null pointer dereferences.

Signed-off-by: Dmitry Monakhov <dmonakhov@openvz.org>
Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>

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Dmitry Monakhov 2014-04-13 15:41:13 -04:00 • committed by Theodore Ts'o

parent 8dc79ec4c0

commit a18ed359bd

1 changed files with 17 additions and 0 deletions

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fs/ext4/extents.c

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