Commit 498b5776 authored Mar 13, 2020 by David Howells

rxrpc: Fix sendmsg(MSG_WAITALL) handling

Fix the handling of sendmsg() with MSG_WAITALL for userspace to round the
timeout for when a signal occurs up to at least two jiffies as a 1 jiffy
timeout may end up being effectively 0 if jiffies wraps at the wrong time.

Fixes: bc5e3a54 ("rxrpc: Use MSG_WAITALL to tell sendmsg() to temporarily ignore signals")
Signed-off-by: David Howells <dhowells@redhat.com>

parent e138aa7d

net/rxrpc/sendmsg.c

+2 −2

Original line number	Diff line number	Diff line
		@@ -71,8 +71,8 @@ static int rxrpc_wait_for_tx_window_waitall(struct rxrpc_sock *rx,

		rtt = READ_ONCE(call->peer->rtt);
		rtt2 = nsecs_to_jiffies64(rtt) * 2;
		if (rtt2 < 1)
		rtt2 = 1;
		if (rtt2 < 2)
		rtt2 = 2;

		timeout = rtt2;
		tx_start = READ_ONCE(call->tx_hard_ack);

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