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[2604:1380:45d1:ec00::1]) by mx.google.com with ESMTPS id g1-20020ac85d41000000b00437234ee48asi6249577qtx.686.2024.04.20.04.06.21 for (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Sat, 20 Apr 2024 04:06:21 -0700 (PDT) Received-SPF: pass (google.com: domain of linux-nfs+bounces-2900-linux.lists.archive=gmail.com@vger.kernel.org designates 2604:1380:45d1:ec00::1 as permitted sender) client-ip=2604:1380:45d1:ec00::1; Authentication-Results: mx.google.com; dkim=pass header.i=@kernel.org header.s=k20201202 header.b=Ho0bE5RG; arc=pass (i=1 dkim=pass dkdomain=kernel.org); spf=pass (google.com: domain of linux-nfs+bounces-2900-linux.lists.archive=gmail.com@vger.kernel.org designates 2604:1380:45d1:ec00::1 as permitted sender) smtp.mailfrom="linux-nfs+bounces-2900-linux.lists.archive=gmail.com@vger.kernel.org"; dmarc=pass (p=NONE sp=NONE dis=NONE) header.from=kernel.org Received: from smtp.subspace.kernel.org (wormhole.subspace.kernel.org [52.25.139.140]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by ny.mirrors.kernel.org (Postfix) with ESMTPS id 194DB1C20C4F for ; Sat, 20 Apr 2024 11:06:21 +0000 (UTC) Received: from localhost.localdomain (localhost.localdomain [127.0.0.1]) by smtp.subspace.kernel.org (Postfix) with ESMTP id 6B3702940C; Sat, 20 Apr 2024 11:06:17 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b="Ho0bE5RG" X-Original-To: linux-nfs@vger.kernel.org Received: from smtp.kernel.org (aws-us-west-2-korg-mail-1.web.codeaurora.org [10.30.226.201]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 37AB617BCB; Sat, 20 Apr 2024 11:06:16 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=10.30.226.201 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1713611177; cv=none; b=DGD7nUeWco29/5yb7iBLu5fU+lb2aA/8KOk9O78R19ISPzypDqXL0rjTfJ01B5hYvtOOZKgjCy9kSoXlDoUb9ui/jyHP7Rcv9yviT2FLQURx3FHKgEEBkMOd5OHomjOgDMo8TUDQWxcHiaufxWS1uRwh4tWs2XyNvHWmWm6J48s= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1713611177; c=relaxed/simple; bh=IV/elp4h8gGVmqVkkVPPCvcXeDa7CybkocvyD6VyK9I=; h=Message-ID:Subject:From:To:Date:In-Reply-To:References: Content-Type:MIME-Version; b=fQlz1bIYaX+39qPASwYzZiBl5r2eIVccTFC3GdJRRLgurg1knVOoZIi6S8iUZSPxppNU3xrp1/16H0UMic3777j7lQUKEhUvgjsqik2Q4O5/IagEiDaNIL+KmQNMu5V5i7QRZBZUuflKy7/t+1YK6krt3MYzW/XPT6QoAL/jeiM= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=Ho0bE5RG; arc=none smtp.client-ip=10.30.226.201 Received: by smtp.kernel.org (Postfix) with ESMTPSA id 3D2A5C072AA; Sat, 20 Apr 2024 11:06:15 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1713611176; bh=IV/elp4h8gGVmqVkkVPPCvcXeDa7CybkocvyD6VyK9I=; h=Subject:From:To:Date:In-Reply-To:References:From; b=Ho0bE5RGBHsS+7XxbzZBCs2I2HONxuCPrLERjU3jD3G+Kigaxj6y1zsbZlDhYvUC0 d2U3PZVoufucQs8Qp8F1FnsaJi13Ai0me/hf/VtndK0jFPDaSVXJJ2Nevs8u7uUM2i aP7Kj1UzsBPwsLdqO5aqBifgcH3ry9o2yGFT/p7oWZt6fG8ZaD0QUYl3QJo9rB7210 Z3z6mE6buy3kcBjY/NnOqPMh/Crz/hQhtTDs2owyfEx/9HY+cPzt1u/N+IEdynybRx FSALqp3Y62euR1ani/2q7Y1bVXAH4Ve1LrvNekE5wgIptFn7y9PL2o1G17y7j2c9Qj E1v8TJnPvGE+A== Message-ID: <90351a7840bfe0f1e5acc74664e8f94bef095ac0.camel@kernel.org> Subject: Re: [PATCH] xprtsock: Fix a loop in xs_tcp_setup_socket() From: Jeff Layton To: Lex Siegel , Chuck Lever , Neil Brown , Olga Kornievskaia , Dai Ngo , Tom Talpey , Trond Myklebust , Anna Schumaker , "David S. Miller" , Eric Dumazet , Jakub Kicinski , Paolo Abeni , linux-nfs@vger.kernel.org, netdev@vger.kernel.org, linux-kernel@vger.kernel.org, bpf@vger.kernel.org Date: Sat, 20 Apr 2024 07:06:13 -0400 In-Reply-To: <20240420104801.94701-1-usiegl00@gmail.com> References: <20240420104801.94701-1-usiegl00@gmail.com> Autocrypt: addr=jlayton@kernel.org; prefer-encrypt=mutual; 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 kZWuOsJdJQdmwlWC5L5ln9xgfr/4mOY38B0U= Content-Type: text/plain; charset="ISO-8859-15" Content-Transfer-Encoding: quoted-printable User-Agent: Evolution 3.50.4 (3.50.4-1.fc39) Precedence: bulk X-Mailing-List: linux-nfs@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 On Sat, 2024-04-20 at 19:48 +0900, Lex Siegel wrote: > When using a bpf on kernel_connect(), the call can return -EPERM. > This causes xs_tcp_setup_socket() to loop forever, filling up the > syslog and causing the kernel to freeze up. >=20 > Signed-off-by: Lex Siegel > --- > net/sunrpc/xprtsock.c | 2 ++ > 1 file changed, 2 insertions(+) >=20 > diff --git a/net/sunrpc/xprtsock.c b/net/sunrpc/xprtsock.c > index bb9b747d58a1..47b254806a08 100644 > --- a/net/sunrpc/xprtsock.c > +++ b/net/sunrpc/xprtsock.c > @@ -2446,6 +2446,8 @@ static void xs_tcp_setup_socket(struct work_struct = *work) > /* Happens, for instance, if the user specified a link > * local IPv6 address without a scope-id. > */ > + case -EPERM: > + /* Happens, for instance, if a bpf is preventing the connect */ > case -ECONNREFUSED: > case -ECONNRESET: > case -ENETDOWN: Yeah, I think we'd consider -EPERM a permanent error. Reviewed-by: Jeff Layton