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| author | Theodore Ts'o <tytso@mit.edu> | 2014-02-12 12:16:04 -0500 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2014-03-11 16:09:56 -0700 |
| commit | a8909f1fc06b034f0d790f48c8babf9bc6b2341f (patch) | |
| tree | 9efad08c759c009838bc8a37e69b5e6edcf34989 /crypto/arc4.c | |
| parent | 2606524141e4ff9b6a5d0bcbd9d601dfc5a8285c (diff) | |
ext4: don't try to modify s_flags if the the file system is read-only
commit 23301410972330c0ae9a8afc379ba2005e249cc6 upstream.
If an ext4 file system is created by some tool other than mke2fs
(perhaps by someone who has a pathalogical fear of the GPL) that
doesn't set one or the other of the EXT2_FLAGS_{UN}SIGNED_HASH flags,
and that file system is then mounted read-only, don't try to modify
the s_flags field. Otherwise, if dm_verity is in use, the superblock
will change, causing an dm_verity failure.
Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'crypto/arc4.c')
0 files changed, 0 insertions, 0 deletions