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From: "Johannes Schindelin via GitGitGadget" <gitgitgadget@gmail.com>
To: git@vger.kernel.org
Cc: Jonathan Tan <jonathantanmy@google.com>,
	Jeff King <peff@peff.net>,
	Johannes Schindelin <Johannes.Schindelin@gmx.de>,
	Johannes Schindelin <johannes.schindelin@gmx.de>
Subject: [PATCH v2 0/3] Work around flakiness in t5500.43
Date: Mon, 19 Oct 2020 19:35:39 +0000	[thread overview]
Message-ID: <pull.753.v2.git.1603136142.gitgitgadget@gmail.com> (raw)
In-Reply-To: <pull.753.git.1602600323973.gitgitgadget@gmail.com>

It seems that this test became flaky only recently, although I have to admit
that I have no idea why: the involved code does not seem to have changed
recently at all. It should have been fixed by 
https://lore.kernel.org/git/20200506220741.71021-1-jonathantanmy@google.com/
, but apparently wasn't completely fixed, despite what I said in that
thread.

Changes since v1:

 * Instead of papering over the underlying cause, the patch was completely
   changed to actually fix the bug and add a proper regression test for it
   (originally, I wanted to act according to the common notion that good
   programmers are lazy, oh my, see how well that worked out for me).
 * We now specifically watch out for future bugs where incomplete sideband
   messages would be dropped inadvertently rather than being reported at EOF
   or at encountering a flush/error packet.
 * Before sending 0-length data to demultiplex_sideband(), we now make sure
   that it is not marked as a data packet; Otherwise we now complain loudly
   about a bug.

Johannes Schindelin (3):
  sideband: avoid reporting incomplete sideband messages
  sideband: report unhandled incomplete sideband messages as bugs
  sideband: add defense against packets missing a band designator

 pkt-line.c               | 11 +++++++++--
 sideband.c               |  2 +-
 t/helper/test-pkt-line.c | 23 +++++++++++++++++++++++
 t/t0070-fundamental.sh   |  6 ++++++
 4 files changed, 39 insertions(+), 3 deletions(-)


base-commit: d4a392452e292ff924e79ec8458611c0f679d6d4
Published-As: https://github.com/gitgitgadget/git/releases/tag/pr-753%2Fdscho%2Funflake-t5500.43-v2
Fetch-It-Via: git fetch https://github.com/gitgitgadget/git pr-753/dscho/unflake-t5500.43-v2
Pull-Request: https://github.com/gitgitgadget/git/pull/753

Range-diff vs v1:

 1:  d977644184 < -:  ---------- t5500.43: make the check a bit more robust
 -:  ---------- > 1:  e4ba96358b sideband: avoid reporting incomplete sideband messages
 -:  ---------- > 2:  9ffcc5b78e sideband: report unhandled incomplete sideband messages as bugs
 -:  ---------- > 3:  c61e560451 sideband: add defense against packets missing a band designator

-- 
gitgitgadget

  parent reply	other threads:[~2020-10-19 19:35 UTC|newest]

Thread overview: 33+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2020-10-13 14:45 [PATCH] t5500.43: make the check a bit more robust Johannes Schindelin via GitGitGadget
2020-10-13 17:53 ` Junio C Hamano
2020-10-13 18:55 ` Jeff King
2020-10-13 19:07   ` Junio C Hamano
2020-10-13 19:09   ` Jeff King
2020-10-17  3:31     ` Johannes Schindelin
2020-10-17  2:34   ` Johannes Schindelin
2020-10-19 19:35 ` Johannes Schindelin via GitGitGadget [this message]
2020-10-19 19:35   ` [PATCH v2 1/3] sideband: avoid reporting incomplete sideband messages Johannes Schindelin via GitGitGadget
2020-10-20 20:33     ` Junio C Hamano
2020-10-20 20:48       ` Johannes Schindelin
2020-10-20 21:33         ` Junio C Hamano
2020-10-19 19:35   ` [PATCH v2 2/3] sideband: report unhandled incomplete sideband messages as bugs Johannes Schindelin via GitGitGadget
2020-10-19 19:35   ` [PATCH v2 3/3] sideband: add defense against packets missing a band designator Johannes Schindelin via GitGitGadget
2020-10-20 20:36     ` Junio C Hamano
2020-10-23  8:34     ` Jeff King
2020-10-23 14:44       ` Junio C Hamano
2020-10-23  8:48     ` Jeff King
2020-10-23  5:36       ` Johannes Schindelin
2020-10-23  8:50   ` [PATCH v2 0/3] Work around flakiness in t5500.43 Jeff King
2020-10-26 16:04     ` Johannes Schindelin
2020-10-26 16:09   ` [PATCH v3 0/2] " Johannes Schindelin via GitGitGadget
2020-10-26 16:09     ` [PATCH v3 1/2] sideband: avoid reporting incomplete sideband messages Johannes Schindelin via GitGitGadget
2020-10-26 16:09     ` [PATCH v3 2/2] sideband: report unhandled incomplete sideband messages as bugs Johannes Schindelin via GitGitGadget
2020-10-26 18:33     ` [PATCH v3 0/2] Work around flakiness in t5500.43 Junio C Hamano
2020-10-27  6:52     ` [PATCH] sideband: diagnose more incoming packet anomalies Jeff King
2020-10-27  7:12       ` Jeff King
2020-10-27 18:56         ` Junio C Hamano
2020-10-27 20:42           ` Jeff King
2020-10-27 21:38             ` Junio C Hamano
2020-10-28  9:33               ` Jeff King
2020-10-27  7:13       ` Jeff King
2020-10-27 19:04         ` Junio C Hamano

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