diff options
| author | Sven Eckelmann <sven@narfation.org> | 2018-12-30 12:46:01 +0100 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2019-02-15 08:11:07 +0100 |
| commit | 54dbbb7bc5c7b4d39c201826c260381428f88b42 (patch) | |
| tree | c28b0033153ae63fb007a9b01b34bb528339f47a /crypto/gcm.c | |
| parent | f46373e0f0c7efc70482d1aca6389c2274dfb359 (diff) | |
batman-adv: Avoid WARN on net_device without parent in netns
commit 955d3411a17f590364238bd0d3329b61f20c1cd2 upstream.
It is not allowed to use WARN* helpers on potential incorrect input from
the user or transient problems because systems configured as panic_on_warn
will reboot due to such a problem.
A NULL return value of __dev_get_by_index can be caused by various problems
which can either be related to the system configuration or problems
(incorrectly returned network namespaces) in other (virtual) net_device
drivers. batman-adv should not cause a (harmful) WARN in this situation and
instead only report it via a simple message.
Fixes: b7eddd0b3950 ("batman-adv: prevent using any virtual device created on batman-adv as hard-interface")
Reported-by: syzbot+c764de0fcfadca9a8595@syzkaller.appspotmail.com
Reported-by: Dmitry Vyukov <dvyukov@google.com>
Signed-off-by: Sven Eckelmann <sven@narfation.org>
Signed-off-by: Simon Wunderlich <sw@simonwunderlich.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'crypto/gcm.c')
0 files changed, 0 insertions, 0 deletions