Hello Tetsuo.
On 03.10.22 14:34, Tetsuo Handa wrote:
On 2022/10/03 21:30, patchwork-bot+netdevbpf@xxxxxxxxxx wrote:
Hello:
This patch was applied to netdev/net.git (master)
by David S. Miller <davem@xxxxxxxxxxxxx>:
On Sun, 2 Oct 2022 01:43:44 +0900 you wrote:
syzbot is hitting skb_assert_len() warning at raw_sendmsg() for ieee802154
socket. What commit dc633700f00f726e ("net/af_packet: check len when
min_header_len equals to 0") does also applies to ieee802154 socket.
Link: https://syzkaller.appspot.com/bug?extid=5ea725c25d06fb9114c4
Reported-by: syzbot <syzbot+5ea725c25d06fb9114c4@xxxxxxxxxxxxxxxxxxxxxxxxx>
Fixes: fd1894224407c484 ("bpf: Don't redirect packets with invalid pkt_len")
Signed-off-by: Tetsuo Handa <penguin-kernel@xxxxxxxxxxxxxxxxxxx>
[...]
Here is the summary with links:
- net/ieee802154: reject zero-sized raw_sendmsg()
https://git.kernel.org/netdev/net/c/3a4d061c699b
Are you sure that returning -EINVAL is OK?
In v2 patch, I changed to return 0, for PF_IEEE802154 socket's zero-sized
raw_sendmsg() request was able to return 0.
I pulled in the revert from Alex and your v2 patch into my wpan tree
now. It will go to net from there.
regards
Stefan Schmidt
