Files
integ/base/linuxptp/debian/patches/0026-phc2sys-Fix-null-pointer-de-reference-in-manual-mode.patch
Andre Mauricio Zelak cfe25f0193 Fixed event port id map
Fixed the port id map in the Port Data Set event handling. The port id
is composed by port number and node index after the HA implementation.

Code tidying. As definition, the port id and the port number are
different. An existing port number variable was rennamed to
prevent missinterpretation.

Code tidying. The HA node state change processing was disabled
when HA feature is not enabled.

Test plan:
PASS: Verify the phc2sys executable recognizes the port in the port
state change event, when -a configuration option is used
PASS: Verify the events in the HA scenario are being recognized

Story: 2010723
Task: 49405

Change-Id: Iea2b3c4e7d7dcd07ca2ad52bc4042f80282b1a9a
Signed-off-by: Andre Mauricio Zelak <andre.zelak@windriver.com>
2024-01-15 16:28:29 -03:00

92 lines
2.6 KiB
Diff

From 5aacbe319db97907a15741005e2790bbf4c742a0 Mon Sep 17 00:00:00 2001
From: Andre Mauricio Zelak <andre.zelak@windriver.com>
Date: Mon, 12 Jun 2023 15:37:46 -0300
Subject: [PATCH 26/56] phc2sys: Fix null pointer de-reference in manual mode.
If both the -w and -O command line options are specified (or when
using -w when both source and destination clocks are PHCs), then
pointer to the PMC agent will be incorrectly freed.
Fix the segfault by introducing a method to "disable" the agent as was
done before the PMC agent code was introduced.
Unfortunately the resulting PMC agent API now has both create/destroy
and init/disable methods. This clunky arrangement can be cleaned up
later on, but it entails re-factoring the phc2sys program even more.
Signed-off-by: Richard Cochran <richardcochran@gmail.com>
Fixes: 8266987 ("pmc_agent: Hide the implementation.")
[commit 68fd0b010e9761e3dc580026eb6f2366c7c8e82d upstream]
Signed-off-by: Andre Mauricio Zelak <andre.zelak@windriver.com>
---
phc2sys.c | 7 ++-----
pmc_agent.c | 8 ++++++++
pmc_agent.h | 6 ++++++
3 files changed, 16 insertions(+), 5 deletions(-)
diff --git a/phc2sys.c b/phc2sys.c
index cbe80f2..3cafbb2 100644
--- a/phc2sys.c
+++ b/phc2sys.c
@@ -1340,8 +1340,7 @@ int main(int argc, char *argv[])
if (priv.forced_sync_offset ||
(src->clkid != CLOCK_REALTIME && dst->clkid != CLOCK_REALTIME) ||
src->clkid == CLOCK_INVALID) {
- pmc_agent_destroy(priv.node);
- priv.node = NULL;
+ pmc_agent_disable(priv.node);
}
}
@@ -1355,9 +1354,7 @@ int main(int argc, char *argv[])
}
end:
- if (priv.node) {
- pmc_agent_destroy(priv.node);
- }
+ pmc_agent_destroy(priv.node);
clock_cleanup(&priv);
port_cleanup(&priv);
config_destroy(cfg);
diff --git a/pmc_agent.c b/pmc_agent.c
index 22af306..833d1c1 100644
--- a/pmc_agent.c
+++ b/pmc_agent.c
@@ -366,6 +366,14 @@ void pmc_agent_destroy(struct pmc_agent *agent)
free(agent);
}
+void pmc_agent_disable(struct pmc_agent *agent)
+{
+ if (agent->pmc) {
+ pmc_destroy(agent->pmc);
+ }
+ agent->pmc = NULL;
+}
+
int pmc_agent_get_leap(struct pmc_agent *agent)
{
return agent->leap;
diff --git a/pmc_agent.h b/pmc_agent.h
index 483a21b..0ed10f8 100644
--- a/pmc_agent.h
+++ b/pmc_agent.h
@@ -55,6 +55,12 @@ struct pmc_agent *pmc_agent_create(void);
*/
void pmc_agent_destroy(struct pmc_agent *agent);
+/**
+ * Disconnects the PMC agent from the ptp4l service.
+ * @param agent Pointer to a PMC instance obtained via @ref pmc_agent_create().
+ */
+void pmc_agent_disable(struct pmc_agent *agent);
+
/**
* Gets the current leap adjustment.
* @param agent Pointer to a PMC instance obtained via @ref pmc_agent_create().
--
2.25.1