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| author | Eric Dumazet <edumazet@google.com> | 2015-06-16 07:59:11 -0700 |
|---|---|---|
| committer | Moyster <oysterized@gmail.com> | 2016-08-26 19:17:19 +0200 |
| commit | b5b05833b4a431b5a82bec380296e8d684b3c461 (patch) | |
| tree | 4e00d8885b410b9490d8a10852b89c7c2fa754fb /samples | |
| parent | e61b13f3fe056db4c7fa3a1ac4458707486afeda (diff) | |
packet: read num_members once in packet_rcv_fanout()
[ Upstream commit f98f4514d07871da7a113dd9e3e330743fd70ae4 ]
We need to tell compiler it must not read f->num_members multiple
times. Otherwise testing if num is not zero is flaky, and we could
attempt an invalid divide by 0 in fanout_demux_cpu()
Note bug was present in packet_rcv_fanout_hash() and
packet_rcv_fanout_lb() but final 3.1 had a simple location
after commit 95ec3eb417115fb ("packet: Add 'cpu' fanout policy.")
Fixes: dc99f600698dc ("packet: Add fanout support.")
Signed-off-by: Eric Dumazet <edumazet@google.com>
Cc: Willem de Bruijn <willemb@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: Stefan Guendhoer <stefan@guendhoer.com>
Diffstat (limited to 'samples')
0 files changed, 0 insertions, 0 deletions