ext4: don't allow r/w mounts if metadata blocks overlap the superblock

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If some metadata block, such as an allocation bitmap, overlaps the
superblock, it's very likely that if the file system is mounted
read/write, the results will not be pretty.  So disallow r/w mounts
for file systems corrupted in this particular way.

Signed-off-by: Theodore Ts'o <tytso@mit.edu>
Cc: stable@vger.kernel.org

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Theodore Ts'o 2018-03-29 22:10:35 -04:00

parent a45403b515

commit 18db4b4e6f

1 changed files with 6 additions and 0 deletions

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fs/ext4/super.c

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