diff options
| author | Quentin Casasnovas <quentin.casasnovas@oracle.com> | 2014-11-12 11:19:23 +0100 |
|---|---|---|
| committer | Jiri Slaby <jslaby@suse.cz> | 2014-11-13 19:02:05 +0100 |
| commit | a7a2830c5cf50217e38ffbc6797e36bc15bb4f1c (patch) | |
| tree | 5e2d5e9eef09b71e5f9c31cabdd9e696ccbaa46d /kernel | |
| parent | cb06484a39282097dded8a42243d001ab25a18a4 (diff) | |
regmap: fix kernel hang on regmap_bulk_write with zero val_count.
If val_count is zero we return -EINVAL with map->lock_arg locked, which
will deadlock the kernel next time we try to acquire this lock.
In 3.12, this was introduced by a0b8d8d906d267987d507138003048c5fdf774
("regmap: fix possible ZERO_SIZE_PTR pointer dereferencing error.")
which improperly back-ported d6b41cb06044a7d895db82bdd54f6e4219970510.
This issue was found during review of Ubuntu Trusty 3.13.0-40.68 kernel to
prepare Ksplice rebootless updates.
Fixes: f5942dd ("regmap: fix possible ZERO_SIZE_PTR pointer dereferencing error.")
Signed-off-by: Quentin Casasnovas <quentin.casasnovas@oracle.com>
Signed-off-by: Jiri Slaby <jslaby@suse.cz>
Diffstat (limited to 'kernel')
0 files changed, 0 insertions, 0 deletions