From mboxrd@z Thu Jan 1 00:00:00 1970 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 397295F54E; Tue, 13 Feb 2024 17:29:14 +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=1707845354; cv=none; b=HSFmee4tbK0D2dZvD8M4DeaWZY4aWibX0DUouY2XhpShrHDzQSNMstUx+mXehN3wvtfQfZlGNT3HAgnlGi1iHqdbZSwRYZaN1I/kh45wT1Tm7HNeEMthjxJ9+0O0EwyvS+f926oG48903CKJO7JN/T+PdtkA2gwXr53R1HY4r3Y= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1707845354; c=relaxed/simple; bh=J4pdbmSADvFO7GVwsPmZoj7P+sgE7PcRBWLWYcL9D44=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=WDjdaG9pb5Ry3s2TfXtNFNKIcEPKnnVLISu6pk8XAiarj1wF2wZjG5/9GJed/RdqQbahogmXpKWZgvljGkgI37MRUFyhJAUrERhojUIfQtRPU7kbcwJ1/U9ySfViLN0qJmyi1b5OsXWXcWdOiv0MbyPE7ZYJIJheby5yFNhj85c= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linuxfoundation.org header.i=@linuxfoundation.org header.b=DZFxKYJE; arc=none smtp.client-ip=10.30.226.201 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linuxfoundation.org header.i=@linuxfoundation.org header.b="DZFxKYJE" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 93139C433F1; Tue, 13 Feb 2024 17:29:13 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linuxfoundation.org; s=korg; t=1707845354; bh=J4pdbmSADvFO7GVwsPmZoj7P+sgE7PcRBWLWYcL9D44=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=DZFxKYJEK+B652DNDeSBfhpIZHtV3mLmMcpeh8/5gx1AJeV9D2ocNFGBPhIMuZTdw 4Pbg8Lodj4UmXDjnM5oE53m+tcjpM2ZII3GdHnQjqbEkUbLgwkUxm10dAEhEw0lrHx JCZ5LYEi4WiV6rpmGTkPe6rIkykXRlpidNlJKwko= From: Greg Kroah-Hartman To: stable@vger.kernel.org Cc: Greg Kroah-Hartman , patches@lists.linux.dev, Paolo Abeni , David Ahern , Jakub Kicinski , Sasha Levin Subject: [PATCH 6.6 055/121] selftests: net: avoid just another constant wait Date: Tue, 13 Feb 2024 18:21:04 +0100 Message-ID: <20240213171854.602620364@linuxfoundation.org> X-Mailer: git-send-email 2.43.1 In-Reply-To: <20240213171852.948844634@linuxfoundation.org> References: <20240213171852.948844634@linuxfoundation.org> User-Agent: quilt/0.67 X-stable: review X-Patchwork-Hint: ignore Precedence: bulk X-Mailing-List: patches@lists.linux.dev List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit 6.6-stable review patch. If anyone has any objections, please let me know. ------------------ From: Paolo Abeni [ Upstream commit 691bb4e49c98a47bc643dd808453136ce78b15b4 ] Using hard-coded constant timeout to wait for some expected event is deemed to fail sooner or later, especially in slow env. Our CI has spotted another of such race: # TEST: ipv6: cleanup of cached exceptions - nexthop objects [FAIL] # can't delete veth device in a timely manner, PMTU dst likely leaked Replace the crude sleep with a loop looking for the expected condition at low interval for a much longer range. Fixes: b3cc4f8a8a41 ("selftests: pmtu: add explicit tests for PMTU exceptions cleanup") Signed-off-by: Paolo Abeni Reviewed-by: David Ahern Link: https://lore.kernel.org/r/fd5c745e9bb665b724473af6a9373a8c2a62b247.1706812005.git.pabeni@redhat.com Signed-off-by: Jakub Kicinski Signed-off-by: Sasha Levin --- tools/testing/selftests/net/pmtu.sh | 18 +++++++++++++----- 1 file changed, 13 insertions(+), 5 deletions(-) diff --git a/tools/testing/selftests/net/pmtu.sh b/tools/testing/selftests/net/pmtu.sh index f0febc19baae..d65fdd407d73 100755 --- a/tools/testing/selftests/net/pmtu.sh +++ b/tools/testing/selftests/net/pmtu.sh @@ -1957,6 +1957,13 @@ check_command() { return 0 } +check_running() { + pid=${1} + cmd=${2} + + [ "$(cat /proc/${pid}/cmdline 2>/dev/null | tr -d '\0')" = "{cmd}" ] +} + test_cleanup_vxlanX_exception() { outer="${1}" encap="vxlan" @@ -1987,11 +1994,12 @@ test_cleanup_vxlanX_exception() { ${ns_a} ip link del dev veth_A-R1 & iplink_pid=$! - sleep 1 - if [ "$(cat /proc/${iplink_pid}/cmdline 2>/dev/null | tr -d '\0')" = "iplinkdeldevveth_A-R1" ]; then - err " can't delete veth device in a timely manner, PMTU dst likely leaked" - return 1 - fi + for i in $(seq 1 20); do + check_running ${iplink_pid} "iplinkdeldevveth_A-R1" || return 0 + sleep 0.1 + done + err " can't delete veth device in a timely manner, PMTU dst likely leaked" + return 1 } test_cleanup_ipv6_exception() { -- 2.43.0