mirror of
https://github.com/torvalds/linux
synced 2024-11-05 18:23:50 +00:00
3034749132
make allmodconfig && make W=1 C=1 reports for lib/test_*.ko: WARNING: modpost: missing MODULE_DESCRIPTION() in lib/test_hexdump.o WARNING: modpost: missing MODULE_DESCRIPTION() in lib/test_dhry.o WARNING: modpost: missing MODULE_DESCRIPTION() in lib/test_firmware.o WARNING: modpost: missing MODULE_DESCRIPTION() in lib/test_sysctl.o WARNING: modpost: missing MODULE_DESCRIPTION() in lib/test_hash.o WARNING: modpost: missing MODULE_DESCRIPTION() in lib/test_ida.o WARNING: modpost: missing MODULE_DESCRIPTION() in lib/test_list_sort.o WARNING: modpost: missing MODULE_DESCRIPTION() in lib/test_min_heap.o WARNING: modpost: missing MODULE_DESCRIPTION() in lib/test_module.o WARNING: modpost: missing MODULE_DESCRIPTION() in lib/test_sort.o WARNING: modpost: missing MODULE_DESCRIPTION() in lib/test_static_keys.o WARNING: modpost: missing MODULE_DESCRIPTION() in lib/test_static_key_base.o WARNING: modpost: missing MODULE_DESCRIPTION() in lib/test_memcat_p.o WARNING: modpost: missing MODULE_DESCRIPTION() in lib/test_blackhole_dev.o WARNING: modpost: missing MODULE_DESCRIPTION() in lib/test_meminit.o WARNING: modpost: missing MODULE_DESCRIPTION() in lib/test_free_pages.o WARNING: modpost: missing MODULE_DESCRIPTION() in lib/test_kprobes.o WARNING: modpost: missing MODULE_DESCRIPTION() in lib/test_ref_tracker.o WARNING: modpost: missing MODULE_DESCRIPTION() in lib/test_bits.o Add the missing invocations of the MODULE_DESCRIPTION() macro. Link: https://lkml.kernel.org/r/20240619-md-lib-test-v2-1-301e30eeba1e@quicinc.com Signed-off-by: Jeff Johnson <quic_jjohnson@quicinc.com> Reviewed-by: Kees Cook <kees@kernel.org> Reviewed-by: Masami Hiramatsu (Google) <mhiramat@kernel.org> Cc: Anil S Keshavamurthy <anil.s.keshavamurthy@intel.com> Cc: "David S. Miller" <davem@davemloft.net> Cc: Masami Hiramatsu (Google) <mhiramat@kernel.org> Cc: "Naveen N. Rao" <naveen.n.rao@linux.ibm.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
48 lines
1 KiB
C
48 lines
1 KiB
C
// SPDX-License-Identifier: GPL-2.0+
|
|
/*
|
|
* test_free_pages.c: Check that free_pages() doesn't leak memory
|
|
* Copyright (c) 2020 Oracle
|
|
* Author: Matthew Wilcox <willy@infradead.org>
|
|
*/
|
|
|
|
#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
|
|
|
|
#include <linux/gfp.h>
|
|
#include <linux/mm.h>
|
|
#include <linux/module.h>
|
|
|
|
static void test_free_pages(gfp_t gfp)
|
|
{
|
|
unsigned int i;
|
|
|
|
for (i = 0; i < 1000 * 1000; i++) {
|
|
unsigned long addr = __get_free_pages(gfp, 3);
|
|
struct page *page = virt_to_page((void *)addr);
|
|
|
|
/* Simulate page cache getting a speculative reference */
|
|
get_page(page);
|
|
free_pages(addr, 3);
|
|
put_page(page);
|
|
}
|
|
}
|
|
|
|
static int m_in(void)
|
|
{
|
|
pr_info("Testing with GFP_KERNEL\n");
|
|
test_free_pages(GFP_KERNEL);
|
|
pr_info("Testing with GFP_KERNEL | __GFP_COMP\n");
|
|
test_free_pages(GFP_KERNEL | __GFP_COMP);
|
|
pr_info("Test completed\n");
|
|
|
|
return 0;
|
|
}
|
|
|
|
static void m_ex(void)
|
|
{
|
|
}
|
|
|
|
module_init(m_in);
|
|
module_exit(m_ex);
|
|
MODULE_AUTHOR("Matthew Wilcox <willy@infradead.org>");
|
|
MODULE_DESCRIPTION("Check that free_pages() doesn't leak memory");
|
|
MODULE_LICENSE("GPL");
|