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4505153954
Based on 1 normalized pattern(s): this program is free software you can redistribute it and or modify it under the terms of the gnu general public license version 2 as published by the free software foundation this program is distributed in the hope that it will be useful but without any warranty without even the implied warranty of merchantability or fitness for a particular purpose see the gnu general public license for more details you should have received a copy of the gnu general public license along with this program if not write to the free software foundation inc 59 temple place suite 330 boston ma 02111 1307 usa extracted by the scancode license scanner the SPDX license identifier GPL-2.0-only has been chosen to replace the boilerplate/reference in 136 file(s). Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Reviewed-by: Alexios Zavras <alexios.zavras@intel.com> Reviewed-by: Allison Randal <allison@lohutok.net> Cc: linux-spdx@vger.kernel.org Link: https://lkml.kernel.org/r/20190530000436.384967451@linutronix.de Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
100 lines
2.6 KiB
C
100 lines
2.6 KiB
C
// SPDX-License-Identifier: GPL-2.0-only
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/*
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* mm/kmemleak-test.c
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*
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* Copyright (C) 2008 ARM Limited
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* Written by Catalin Marinas <catalin.marinas@arm.com>
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*/
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#define pr_fmt(fmt) "kmemleak: " fmt
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#include <linux/init.h>
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#include <linux/kernel.h>
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#include <linux/module.h>
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#include <linux/slab.h>
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#include <linux/vmalloc.h>
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#include <linux/list.h>
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#include <linux/percpu.h>
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#include <linux/fdtable.h>
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#include <linux/kmemleak.h>
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struct test_node {
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long header[25];
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struct list_head list;
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long footer[25];
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};
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static LIST_HEAD(test_list);
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static DEFINE_PER_CPU(void *, kmemleak_test_pointer);
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/*
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* Some very simple testing. This function needs to be extended for
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* proper testing.
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*/
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static int __init kmemleak_test_init(void)
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{
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struct test_node *elem;
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int i;
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pr_info("Kmemleak testing\n");
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/* make some orphan objects */
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pr_info("kmalloc(32) = %p\n", kmalloc(32, GFP_KERNEL));
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pr_info("kmalloc(32) = %p\n", kmalloc(32, GFP_KERNEL));
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pr_info("kmalloc(1024) = %p\n", kmalloc(1024, GFP_KERNEL));
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pr_info("kmalloc(1024) = %p\n", kmalloc(1024, GFP_KERNEL));
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pr_info("kmalloc(2048) = %p\n", kmalloc(2048, GFP_KERNEL));
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pr_info("kmalloc(2048) = %p\n", kmalloc(2048, GFP_KERNEL));
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pr_info("kmalloc(4096) = %p\n", kmalloc(4096, GFP_KERNEL));
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pr_info("kmalloc(4096) = %p\n", kmalloc(4096, GFP_KERNEL));
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#ifndef CONFIG_MODULES
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pr_info("kmem_cache_alloc(files_cachep) = %p\n",
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kmem_cache_alloc(files_cachep, GFP_KERNEL));
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pr_info("kmem_cache_alloc(files_cachep) = %p\n",
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kmem_cache_alloc(files_cachep, GFP_KERNEL));
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#endif
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pr_info("vmalloc(64) = %p\n", vmalloc(64));
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pr_info("vmalloc(64) = %p\n", vmalloc(64));
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pr_info("vmalloc(64) = %p\n", vmalloc(64));
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pr_info("vmalloc(64) = %p\n", vmalloc(64));
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pr_info("vmalloc(64) = %p\n", vmalloc(64));
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/*
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* Add elements to a list. They should only appear as orphan
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* after the module is removed.
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*/
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for (i = 0; i < 10; i++) {
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elem = kzalloc(sizeof(*elem), GFP_KERNEL);
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pr_info("kzalloc(sizeof(*elem)) = %p\n", elem);
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if (!elem)
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return -ENOMEM;
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INIT_LIST_HEAD(&elem->list);
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list_add_tail(&elem->list, &test_list);
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}
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for_each_possible_cpu(i) {
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per_cpu(kmemleak_test_pointer, i) = kmalloc(129, GFP_KERNEL);
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pr_info("kmalloc(129) = %p\n",
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per_cpu(kmemleak_test_pointer, i));
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}
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return 0;
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}
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module_init(kmemleak_test_init);
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static void __exit kmemleak_test_exit(void)
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{
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struct test_node *elem, *tmp;
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/*
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* Remove the list elements without actually freeing the
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* memory.
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*/
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list_for_each_entry_safe(elem, tmp, &test_list, list)
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list_del(&elem->list);
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}
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module_exit(kmemleak_test_exit);
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MODULE_LICENSE("GPL");
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