diff options
| author | Jan Kara <jack@suse.cz> | 2020-11-02 16:32:10 +0100 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2021-01-09 13:34:15 +0100 |
| commit | e1b7f1ab543bffc0d6af7d22e744af9b7acc10ac (patch) | |
| tree | 6b12041a62b5929691b74edff742656d588a3e05 /kernel/module.c | |
| parent | e656f46bdc55d13c06d2d6e46e4b4b7c0f832d6d (diff) | |
quota: Don't overflow quota file offsets
[ Upstream commit 10f04d40a9fa29785206c619f80d8beedb778837 ]
The on-disk quota format supports quota files with upto 2^32 blocks. Be
careful when computing quota file offsets in the quota files from block
numbers as they can overflow 32-bit types. Since quota files larger than
4GB would require ~26 millions of quota users, this is mostly a
theoretical concern now but better be careful, fuzzers would find the
problem sooner or later anyway...
Reviewed-by: Andreas Dilger <adilger@dilger.ca>
Signed-off-by: Jan Kara <jack@suse.cz>
Signed-off-by: Sasha Levin <sashal@kernel.org>
Diffstat (limited to 'kernel/module.c')
0 files changed, 0 insertions, 0 deletions