lxcfs/0004-fix-memory-leak.patch

From b2c83183e7ace5049bab265ec3084335165ff570 Mon Sep 17 00:00:00 2001
From: vegbir <yangjiaqi16@huawei.com>
Date: Wed, 12 Jul 2023 07:07:16 +0000
Subject: [PATCH 04/16] fix memory leak

Signed-off-by: vegbir <yangjiaqi16@huawei.com>
---
 src/proc_fuse.c | 8 +++++++-
 1 file changed, 7 insertions(+), 1 deletion(-)

diff --git a/src/proc_fuse.c b/src/proc_fuse.c
index 4503373..c615e8e 100644
--- a/src/proc_fuse.c
+++ b/src/proc_fuse.c
@@ -304,6 +304,8 @@ static uint64_t get_min_memlimit(const char *cgroup, bool swap)
 		return log_error_errno(0, ENOMEM, "Failed to allocate memory");
 
 	retlimit = get_memlimit(copy, swap);
+	if (retlimit == 0)
+		return 0;
 
 	/*
 	 * If the cgroup doesn't start with / (probably won't happen), dirname()
@@ -409,6 +411,8 @@ static int proc_swaps_read(char *buf, size_t size, off_t offset,
 	prune_init_slice(cgroup);
 
 	memlimit = get_min_memlimit(cgroup, false);
+	if (memlimit == 0)
+		return 0;
 
 	ret = cgroup_ops->get_memory_current(cgroup_ops, cgroup, &memusage_str);
 	if (ret < 0)
@@ -1442,6 +1446,8 @@ static int proc_meminfo_read(char *buf, size_t size, off_t offset,
 		return read_file_fuse("/proc/meminfo", buf, size, d);
 
 	memlimit = get_min_memlimit(cgroup, false);
+	if (memlimit == 0)
+		return 0;
 
 	/*
 	 * Following values are allowed to fail, because swapaccount might be
@@ -1456,9 +1462,9 @@ static int proc_meminfo_read(char *buf, size_t size, off_t offset,
 
 	memusage /= 1024;
 	memlimit /= 1024;
+	char *printme, lbuf[100];
 	while (getline(&line, &linelen, f) != -1) {
 		ssize_t l;
-		char *printme, lbuf[100];
 
 		memset(lbuf, 0, 100);
 		if (startswith(line, "MemTotal:")) {
-- 
2.41.0