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32 lines
1.2 KiB
32 lines
1.2 KiB
9 months ago
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commit b8b53b338f6da91e86d115a39da860cefac736ad
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Author: Florian Weimer <fweimer@redhat.com>
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Date: Thu Oct 15 12:33:13 2020 +0200
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resolv: Serialize processing in resolv/tst-resolv-txnid-collision
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When switching name servers, response processing by two server
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threads clobbers the global test state. (There is still some
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risk that this test is negatively impact by packet drops and
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packet reordering, but this applies to many of the resolver tests
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and is difficult to avoid.)
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Fixes commit f1f00c072138af90ae6da180f260111f09afe7a3 ("resolv:
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Handle transaction ID collisions in parallel queries (bug 26600)").
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diff --git a/resolv/tst-resolv-txnid-collision.c b/resolv/tst-resolv-txnid-collision.c
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index 611d37362f3e5e89..189b76f1268f4e4d 100644
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--- a/resolv/tst-resolv-txnid-collision.c
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+++ b/resolv/tst-resolv-txnid-collision.c
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@@ -309,6 +309,11 @@ do_test (void)
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((struct resolv_redirect_config)
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{
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.response_callback = response,
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+
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+ /* The response callback use global state (the previous_*
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+ variables), and query processing must therefore be
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+ serialized. */
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+ .single_thread_udp = true,
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});
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for (int rcode = 0; rcode <= 5; ++rcode)
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