mptcp: annotate lockless access to sk->sk_err

Browse source

sock_error() can clear sk_err with xchg() without the socket lock.

On the no-data msk recv and splice paths, call sock_error() once and
only stop when it returns a non-zero error. Annotate the remaining
msk send and subflow error-report peeks with READ_ONCE().

Signed-off-by: Quanye Yang <quanyeyang@proton.me>
Reviewed-by: Matthieu Baerts (NGI0) <matttbe@kernel.org>
Link: https://patch.msgid.link/20260925-mptcp-sk-err-net-v5-2-0cac04d6ea48@proton.me
Signed-off-by: Paolo Abeni <pabeni@redhat.com>

...

This commit is contained in:

Quanye Yang 2026-09-25 05:47:57 -07:00 • committed by Paolo Abeni

parent 3b49f11cc9

commit 97870870b7

2 changed files with 8 additions and 10 deletions

Show all changes Ignore whitespace when comparing lines Ignore changes in amount of whitespace Ignore changes in whitespace at EOL

Download patch file Download diff file Expand all files Collapse all files

14

net/mptcp/protocol.c

View file

4

net/mptcp/subflow.c

View file