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OCPBUGS-33883: DO NOT MERGE: validate haproxy26-2.6.13-3.rhaos4.15.el8.x86_64.rpm #597

Closed frobware closed 3 months ago

frobware commented 4 months ago

/hold

openshift-ci[bot] commented 4 months ago

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frobware commented 4 months ago

Patch for branch rhaos-4.15-rhel-8 in https://pkgs.devel.redhat.com/cgit/rpms/haproxy/

From dc4ed2c3b68c4c30952110a13dd5c7041fe8942d Mon Sep 17 00:00:00 2001
From: Andrew McDermott <amcdermo@redhat.com>
Date: Thu, 16 May 2024 14:21:43 +0100
Subject: OCPBUGS-32369: HAProxy consuming high cpu usage

- Resolve https://issues.redhat.com/browse/OCPBUGS-32369 (HAProxy consuming high cpu usage)
- Carry fix for https://github.com/haproxy/haproxy/issues/2537
- Fix for issue 2537 picked from https://git.haproxy.org/?p=haproxy.git;a=commit;h=4a9e3e102e192b9efd17e3241a6cc659afb7e7dc
---
 ...y-only-tid-0-must-not-sleep-if-got-s.patch | 44 +++++++++++++++++++
 haproxy.spec                                  | 11 ++++-
 2 files changed, 54 insertions(+), 1 deletion(-)
 create mode 100644 0001-BUG-MINOR-haproxy-only-tid-0-must-not-sleep-if-got-s.patch

diff --git a/0001-BUG-MINOR-haproxy-only-tid-0-must-not-sleep-if-got-s.patch b/0001-BUG-MINOR-haproxy-only-tid-0-must-not-sleep-if-got-s.patch
new file mode 100644
index 0000000..50f54cc
--- /dev/null
+++ b/0001-BUG-MINOR-haproxy-only-tid-0-must-not-sleep-if-got-s.patch
@@ -0,0 +1,44 @@
+From d256f8f3157af29875a915e87e171ec81194e88c Mon Sep 17 00:00:00 2001
+From: Valentine Krasnobaeva <vkrasnobaeva@haproxy.com>
+Date: Mon, 6 May 2024 14:24:41 +0200
+Subject: BUG/MINOR: haproxy: only tid 0 must not sleep if got signal
+
+This patch fixes the commit eea152ee68
+("BUG/MINOR: signals/poller: ensure wakeup from signals").
+
+There is some probability that run_poll_loop() becomes inifinite, if
+TH_FL_SLEEPING is withdrawn from all threads in the second signal_queue_len
+check, when a signal has received just after the first one.
+
+In such particular case, the 'wake' variable, which is used to terminate
+thread's poll loop is never reset to 0. So, we never enter to the "stopping"
+part of the run_poll_loop() and threads, except the one with id 0 (tid 0
+handles signals), will continue to call _do_poll() eternally and will never
+sleep, as its TH_FL_SLEEPING flag was unset.
+
+This flag needs to be removed only for the tid 0, as it was done in the first
+signal_queue_len check.
+
+This fixes an issue #2537 "infinite loop when shutting down".
+
+This fix must be backported in every stable version.
+---
+ src/haproxy.c | 2 +-
+ 1 file changed, 1 insertion(+), 1 deletion(-)
+
+diff --git a/src/haproxy.c b/src/haproxy.c
+index a6349d420..6ed532527 100644
+--- a/src/haproxy.c
++++ b/src/haproxy.c
+@@ -2868,7 +2868,7 @@ void run_poll_loop()
+           if (thread_has_tasks()) {
+               activity[tid].wake_tasks++;
+               _HA_ATOMIC_AND(&sleeping_thread_mask, ~tid_bit);
+-          } else if (signal_queue_len) {
++          } else if (signal_queue_len && tid == 0) {
+               /* this check is required to avoid
+                * a race with wakeup on signals using wake_threads() */
+               _HA_ATOMIC_AND(&sleeping_thread_mask, ~tid_bit);
+-- 
+2.42.0
+
diff --git a/haproxy.spec b/haproxy.spec
index 707fa0a..597852e 100644
--- a/haproxy.spec
+++ b/haproxy.spec
@@ -10,7 +10,7 @@

 Name:           haproxy
 Version:        2.6.13
-Release:        2.rhaos4.15%{?dist}
+Release:        3.rhaos4.15%{?dist}
 Summary:        Do not ship, install or use this, use %{real_name} subpackage instead

 License:        GPLv2+
@@ -24,6 +24,9 @@ Patch0:         0001-BUG-MINOR-fd-always-remove-late-updates-when-freeing.patch
 # https://issues.redhat.com/browse/OCPBUGS-20325 (CVE-2023-40225)
 Patch1:         0001-BUG-MAJOR-http-reject-any-empty-content-length-heade.patch

+# https://issues.redhat.com/browse/OCPBUGS-32369
+Patch2:         0001-BUG-MINOR-haproxy-only-tid-0-must-not-sleep-if-got-s.patch
+
 BuildRequires:  openssl-devel
 BuildRequires:  pcre-devel
 BuildRequires:  zlib-devel
@@ -56,6 +59,7 @@ availability environments. Indeed, it can:
 %setup -q
 %patch0 -p1
 %patch1 -p1
+%patch2 -p1

 %build
 regparm_opts=
@@ -97,6 +101,11 @@ fi
 %{_sbindir}/%{name}

 %changelog
+* Thu May 16 2024 Andrew McDermott <amcdermo@redhat.com> - 2.6.13-3.rhaos4.15
+- Resolve https://issues.redhat.com/browse/OCPBUGS-32369 (HAProxy consuming high cpu usage)
+- Carry fix for https://github.com/haproxy/haproxy/issues/2537
+- Fix for issue 2537 picked from https://git.haproxy.org/?p=haproxy.git;a=commit;h=4a9e3e102e192b9efd17e3241a6cc659afb7e7dc
+
 * Wed Oct 11 2023 Andrew McDermott <amcdermo@redhat.com> - 2.6.13-2.rhaos4.15
 - Resolve https://issues.redhat.com/browse/OCPBUGS-20325 (CVE-2023-40225)

-- 
2.44.0
openshift-ci[bot] commented 4 months ago

@frobware: all tests passed!

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openshift-ci-robot commented 4 months ago

@frobware: This pull request references Jira Issue OCPBUGS-33883, which is invalid:

Comment /jira refresh to re-evaluate validity if changes to the Jira bug are made, or edit the title of this pull request to link to a different bug.

The bug has been updated to refer to the pull request using the external bug tracker.

In response to [this](https://github.com/openshift/router/pull/597): >/hold > Instructions for interacting with me using PR comments are available [here](https://prow.ci.openshift.org/command-help?repo=openshift%2Frouter). If you have questions or suggestions related to my behavior, please file an issue against the [openshift-eng/jira-lifecycle-plugin](https://github.com/openshift-eng/jira-lifecycle-plugin/issues/new) repository.
gcs278 commented 4 months ago

Patch LGTM.

$ git checkout rhaos-4.15-rhel-8
$ git pull
$ git am ~/patches/OCPBUGS-32369-HAProxy-consuming-high-cpu-usage-4.15.patch
Applying: OCPBUGS-32369: HAProxy consuming high cpu usage
.git/rebase-apply/patch:46: space before tab in indent.
            if (thread_has_tasks()) {
.git/rebase-apply/patch:47: space before tab in indent.
                activity[tid].wake_tasks++;
.git/rebase-apply/patch:48: space before tab in indent.
                _HA_ATOMIC_AND(&sleeping_thread_mask, ~tid_bit);
.git/rebase-apply/patch:51: space before tab in indent.
                /* this check is required to avoid
.git/rebase-apply/patch:52: space before tab in indent.
                 * a race with wakeup on signals using wake_threads() */
warning: squelched 3 whitespace errors
warning: 8 lines add whitespace errors.
$ git log -n 1
commit 8be6989d93e82f91ae25058b367d1ef61aa08229 (HEAD -> rhaos-4.15-rhel-8)
Author: Andrew McDermott <amcdermo@redhat.com>
Date:   Thu May 16 14:21:43 2024 +0100

    OCPBUGS-32369: HAProxy consuming high cpu usage

    - Resolve https://issues.redhat.com/browse/OCPBUGS-32369 (HAProxy consuming high cpu usage)
    - Carry fix for https://github.com/haproxy/haproxy/issues/2537
    - Fix for issue 2537 picked from https://git.haproxy.org/?p=haproxy.git;a=commit;h=4a9e3e102e192b9efd17e3241a6cc659afb7e7dc
$ git diff HEAD~ HEAD
[...]
frobware commented 4 months ago

/jira refresh

openshift-ci-robot commented 4 months ago

@frobware: This pull request references Jira Issue OCPBUGS-33883, which is invalid:

Comment /jira refresh to re-evaluate validity if changes to the Jira bug are made, or edit the title of this pull request to link to a different bug.

In response to [this](https://github.com/openshift/router/pull/597#issuecomment-2118007487): >/jira refresh > Instructions for interacting with me using PR comments are available [here](https://prow.ci.openshift.org/command-help?repo=openshift%2Frouter). If you have questions or suggestions related to my behavior, please file an issue against the [openshift-eng/jira-lifecycle-plugin](https://github.com/openshift-eng/jira-lifecycle-plugin/issues/new) repository.
openshift-ci-robot commented 3 months ago

@frobware: This pull request references Jira Issue OCPBUGS-33883. The bug has been updated to no longer refer to the pull request using the external bug tracker.

In response to [this](https://github.com/openshift/router/pull/597): >/hold > Instructions for interacting with me using PR comments are available [here](https://prow.ci.openshift.org/command-help?repo=openshift%2Frouter). If you have questions or suggestions related to my behavior, please file an issue against the [openshift-eng/jira-lifecycle-plugin](https://github.com/openshift-eng/jira-lifecycle-plugin/issues/new) repository.