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| author | Sven Eckelmann <sven@narfation.org> | 2018-12-30 12:46:01 +0100 |
|---|---|---|
| committer | Simon Wunderlich <sw@simonwunderlich.de> | 2018-12-30 13:34:12 +0100 |
| commit | 955d3411a17f590364238bd0d3329b61f20c1cd2 (patch) | |
| tree | d8d2960cbbc94fa917e2caed80a78b45ff6f2fec /tools/perf/scripts/python/syscall-counts-by-pid.py | |
| parent | b71acb0e372160167bf6d5500b88b30b52ccef6e (diff) | |
batman-adv: Avoid WARN on net_device without parent in netns
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>
Diffstat (limited to 'tools/perf/scripts/python/syscall-counts-by-pid.py')
0 files changed, 0 insertions, 0 deletions