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fix crash on reload command during start (RHEL-59112)

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Resolves: RHEL-59112
This commit is contained in:
Miroslav Lichvar 2024-06-13 11:57:41 +02:00
parent f324245f50
commit 1bba745c68
2 changed files with 89 additions and 0 deletions
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86
chrony-reload.patch Normal file
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@ -0,0 +1,86 @@
commit f49be7f06343ee27fff2950937d7f6742f53976f
Author: Miroslav Lichvar <mlichvar@redhat.com>
Date: Tue Mar 12 14:30:27 2024 +0100
conf: don't load sourcedir during initstepslew and RTC init
If the reload sources command was received in the chronyd start-up
sequence with initstepslew and/or RTC init (-s option), the sources
loaded from sourcedirs caused a crash due to failed assertion after
adding sources specified in the config.
Ignore the reload sources command until chronyd enters the normal
operation mode.
Fixes: 519796de3756 ("conf: add sourcedirs directive")
diff --git a/conf.c b/conf.c
index 6eae11c9..8849bdce 100644
--- a/conf.c
+++ b/conf.c
@@ -298,6 +298,8 @@ static ARR_Instance ntp_sources;
static ARR_Instance ntp_source_dirs;
/* Array of uint32_t corresponding to ntp_sources (for sourcedirs reload) */
static ARR_Instance ntp_source_ids;
+/* Flag indicating ntp_sources and ntp_source_ids are used for sourcedirs */
+static int conf_ntp_sources_added = 0;
/* Array of RefclockParameters */
static ARR_Instance refclock_sources;
@@ -1689,8 +1691,12 @@ reload_source_dirs(void)
NSR_Status s;
int d, pass;
+ /* Ignore reload command before adding configured sources */
+ if (!conf_ntp_sources_added)
+ return;
+
prev_size = ARR_GetSize(ntp_source_ids);
- if (prev_size > 0 && ARR_GetSize(ntp_sources) != prev_size)
+ if (ARR_GetSize(ntp_sources) != prev_size)
assert(0);
/* Save the current sources and their configuration IDs */
@@ -1859,7 +1865,10 @@ CNF_AddSources(void)
Free(source->params.name);
}
+ /* The arrays will be used for sourcedir (re)loading */
ARR_SetSize(ntp_sources, 0);
+ ARR_SetSize(ntp_source_ids, 0);
+ conf_ntp_sources_added = 1;
reload_source_dirs();
}
diff --git a/test/simulation/203-initreload b/test/simulation/203-initreload
new file mode 100755
index 00000000..cf7924b8
--- /dev/null
+++ b/test/simulation/203-initreload
@@ -0,0 +1,26 @@
+#!/usr/bin/env bash
+
+. ./test.common
+
+check_config_h 'FEAT_CMDMON 1' || test_skip
+
+# Test fix "conf: don't load sourcedir during initstepslew and RTC init"
+
+test_start "reload during initstepslew"
+
+client_conf="initstepslew 5 192.168.123.1
+sourcedir tmp"
+client_server_conf="#"
+chronyc_conf="reload sources"
+chronyc_start=4
+
+echo 'server 192.168.123.1' > tmp/sources.sources
+
+run_test || test_fail
+check_chronyd_exit || test_fail
+check_source_selection || test_fail
+check_sync || test_fail
+
+check_log_messages "Added source 192\.168\.123\.1" 1 1 || test_fail
+
+test_pass

3
chrony.spec
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@ -34,6 +34,8 @@ Patch2: chrony-service-helper.patch
Patch3: chrony-defconfig.patch
# fix serverstats to correctly count authenticated packets
Patch4: chrony-serverstats.patch
# fix crash on reload command during start
Patch5: chrony-reload.patch
BuildRequires: libcap-devel libedit-devel nettle-devel pps-tools-devel
%ifarch %{ix86} x86_64 %{arm} aarch64 mipsel mips64el ppc64 ppc64le s390 s390x
@ -71,6 +73,7 @@ service to other computers in the network.
%patch2 -p1 -b .service-helper
%patch3 -p1 -b .defconfig
%patch4 -p1 -b .serverstats
%patch5 -p1
%{?gitpatch: echo %{version}-%{gitpatch} > version.txt}