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| author |   Lingpeng Chen <forrest0579@gmail.com> | 2020-01-09 09:48:33 +0800 |
|---|---|---|
| committer |   Daniel Borkmann <daniel@iogearbox.net> | 2020-01-09 23:13:48 +0100 |
| commit | e7a5f1f1cd0008e5ad379270a8657e121eedb669 (patch) | |
| tree | dadfdc408f412c057c4fb1bb74b38fc0578d6bc0 /net/core/filter.c | |
| parent | net: stmmac: Fixed link does not need MDIO Bus (diff) | |
| download | linux-dev-e7a5f1f1cd0008e5ad379270a8657e121eedb669.tar.xz linux-dev-e7a5f1f1cd0008e5ad379270a8657e121eedb669.zip | |
bpf/sockmap: Read psock ingress_msg before sk_receive_queue
Right now in tcp_bpf_recvmsg, sock read data first from sk_receive_queue
if not empty than psock->ingress_msg otherwise. If a FIN packet arrives
and there's also some data in psock->ingress_msg, the data in
psock->ingress_msg will be purged. It is always happen when request to a
HTTP1.0 server like python SimpleHTTPServer since the server send FIN
packet after data is sent out.
Fixes: 604326b41a6fb ("bpf, sockmap: convert to generic sk_msg interface")
Reported-by: Arika Chen <eaglesora@gmail.com>
Suggested-by: Arika Chen <eaglesora@gmail.com>
Signed-off-by: Lingpeng Chen <forrest0579@gmail.com>
Signed-off-by: John Fastabend <john.fastabend@gmail.com>
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
Acked-by: Song Liu <songliubraving@fb.com>
Link: https://lore.kernel.org/bpf/20200109014833.18951-1-forrest0579@gmail.com
Diffstat (limited to '')
0 files changed, 0 insertions, 0 deletions