| commit | 503358ae01b70ce6909d19dd01287093f6b6271c | [log] [tgz] |
|---|---|---|
| author | Theodore Ts'o <tytso@mit.edu> | Mon Nov 23 07:24:46 2009 -0500 |
| committer | Theodore Ts'o <tytso@mit.edu> | Mon Nov 23 07:24:46 2009 -0500 |
| tree | ef81060e38e5eb0895e9455892d5f8cf186a0603 | |
| parent | 2de770a406b06dfc619faabbf5d85c835ed3f2e1 [diff] |
ext4: avoid divide by zero when trying to mount a corrupted file system If s_log_groups_per_flex is greater than 31, then groups_per_flex will will overflow and cause a divide by zero error. This can cause kernel BUG if such a file system is mounted. Thanks to Nageswara R Sastry for analyzing the failure and providing an initial patch. http://bugzilla.kernel.org/show_bug.cgi?id=14287 Signed-off-by: "Theodore Ts'o" <tytso@mit.edu> Cc: stable@kernel.org