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| author | Eric Dumazet <edumazet@google.com> | 2019-10-09 14:51:20 -0700 |
|---|---|---|
| committer | Jakub Kicinski <jakub.kicinski@netronome.com> | 2019-10-09 21:34:31 -0700 |
| commit | 60b173ca3d1cd1782bd0096dc17298ec242f6fb1 (patch) | |
| tree | 63dcac48023790e1acfb33271d47d5d4132ca55c /net | |
| parent | 503978aca46124cd714703e180b9c8292ba50ba7 (diff) | |
| download | linux-60b173ca3d1cd1782bd0096dc17298ec242f6fb1.tar.gz linux-60b173ca3d1cd1782bd0096dc17298ec242f6fb1.tar.bz2 linux-60b173ca3d1cd1782bd0096dc17298ec242f6fb1.zip | |
net: add {READ|WRITE}_ONCE() annotations on ->rskq_accept_head
reqsk_queue_empty() is called from inet_csk_listen_poll() while
other cpus might write ->rskq_accept_head value.
Use {READ|WRITE}_ONCE() to avoid compiler tricks
and potential KCSAN splats.
Fixes: fff1f3001cc5 ("tcp: add a spinlock to protect struct request_sock_queue")
Signed-off-by: Eric Dumazet <edumazet@google.com>
Signed-off-by: Jakub Kicinski <jakub.kicinski@netronome.com>
Diffstat (limited to 'net')
| -rw-r--r-- | net/ipv4/inet_connection_sock.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/net/ipv4/inet_connection_sock.c b/net/ipv4/inet_connection_sock.c index a9183543ca30..dbcf34ec8dd2 100644 --- a/net/ipv4/inet_connection_sock.c +++ b/net/ipv4/inet_connection_sock.c @@ -934,7 +934,7 @@ struct sock *inet_csk_reqsk_queue_add(struct sock *sk, req->sk = child; req->dl_next = NULL; if (queue->rskq_accept_head == NULL) - queue->rskq_accept_head = req; + WRITE_ONCE(queue->rskq_accept_head, req); else queue->rskq_accept_tail->dl_next = req; queue->rskq_accept_tail = req; |