| commit | 86723c8640633bee4b4588d3c7784ee7a0032f65 | [log] [tgz] |
|---|---|---|
| author | Toshiaki Makita <toshiaki.makita1@gmail.com> | Fri Jun 14 17:20:15 2019 +0900 |
| committer | Daniel Borkmann <daniel@iogearbox.net> | Sat Jun 15 00:58:51 2019 +0200 |
| tree | 9cb58b03a94f6b16c7ebc41ceb88f5579bea1ff8 | |
| parent | edabf4d9dd905acd60048ea1579943801e3a4876 [diff] |
bpf, devmap: Add missing RCU read lock on flush
.ndo_xdp_xmit() assumes it is called under RCU. For example virtio_net
uses RCU to detect it has setup the resources for tx. The assumption
accidentally broke when introducing bulk queue in devmap.
Fixes: 5d053f9da431 ("bpf: devmap prepare xdp frames for bulking")
Reported-by: David Ahern <dsahern@gmail.com>
Signed-off-by: Toshiaki Makita <toshiaki.makita1@gmail.com>
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>