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(parent: a45403b) | patch
ext4: don't allow r/w mounts if metadata blocks overlap the superblock
authorTheodore Ts'o <tytso@mit.edu>
Fri, 30 Mar 2018 02:10:35 +0000 (22:10 -0400)
committerTheodore Ts'o <tytso@mit.edu>
Fri, 30 Mar 2018 02:10:35 +0000 (22:10 -0400)
commit18db4b4e6fc31eda838dd1c1296d67dbcb3dc957
tree0a87b79441cdac031e35498a4cef0969c9646fe5tree | snapshot
parenta45403b51582a87872927a3e0fc0a389c26867f1commit | diff
ext4: don't allow r/w mounts if metadata blocks overlap the superblock

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
fs/ext4/super.c diff | blob | blame | history
Mirror https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git