[PATCH i-g-t 1/2] lib/igt_kmemleak: library to interact with kmemleak
Peter Senna Tschudin
peter.senna at linux.intel.com
Tue Jan 21 11:29:43 UTC 2025
Adds a simple library for interacting with kmemleak and add
unit testing for the library. There are two modes intended to
integrate with igt_runner:
- once: collect kmemleaks after all test completed
- each: collect kmemleaks after eachb test completes
To use the library include "igt_kmemleak.h", call
igt_kmemleak_init(NULL) to check if kmemleak is enabled and finally
call igt_kmemleak() to collect kmemleaks. igt_kmemleak() expect the
following arguments:
- const char *last_test: Name of the last lest or NULL
- int resdirfd: file descriptor of the results directory
- bool kmemleak_each: Are we scanning once or scanning after
each test?
CC: stylon.wang at amd.com
CC: Rodrigo.Siqueira at amd.com>
CC: ramadevi.gandi at intel.com
CC: ryszard.knop at intel.com
CC: sameer.lattannavar at intel.com
CC: lucas.demarchi at intel.com
CC: jani.saarinen at intel.com
CC: katarzyna.piecielska at intel.com
CC: matthew.d.roper at intel.com
CC: gregory.f.germano at intel.com
CC: clinton.a.taylor at intel.com
CC: jianshui.yu at intel.com
CC: balasubramani.vivekanandan at intel.com
CC: jonathan.cavitt at intel.com
Signed-off-by: Peter Senna Tschudin <peter.senna at linux.intel.com>
---
lib/igt_kmemleak.c | 268 +++++++++++++++++++++++++++++++++++++++
lib/igt_kmemleak.h | 15 +++
lib/meson.build | 1 +
lib/tests/igt_kmemleak.c | 259 +++++++++++++++++++++++++++++++++++++
lib/tests/meson.build | 1 +
5 files changed, 544 insertions(+)
create mode 100644 lib/igt_kmemleak.c
create mode 100644 lib/igt_kmemleak.h
create mode 100644 lib/tests/igt_kmemleak.c
diff --git a/lib/igt_kmemleak.c b/lib/igt_kmemleak.c
new file mode 100644
index 000000000..ff9543b58
--- /dev/null
+++ b/lib/igt_kmemleak.c
@@ -0,0 +1,268 @@
+// SPDX-License-Identifier: MIT
+/*
+ * Copyright © 2024 Intel Corporation
+ */
+
+#include <stdio.h>
+#include <string.h>
+#include <unistd.h>
+#include <fcntl.h>
+#include <errno.h>
+
+#include "igt_core.h"
+#include "igt_kmemleak.h"
+
+/* We can change the path for unit testing, see igt_kmemleak_init() */
+static char igt_kmemleak_file[256] = "/sys/kernel/debug/kmemleak";
+static bool igt_kmemleak_sync;
+
+#define MAX_WRITE_RETRIES 5
+/**
+ * igt_kmemleak_write - Writes the buffer to the file descriptor retrying when
+ * possible.
+ * @fd: The file descriptor to write to.
+ * @buf: Pointer to the data to write.
+ * @count: Total number of bytes to write.
+ *
+ * Returns the total number of bytes written on success, or -1 on failure.
+ */
+static ssize_t igt_kmemleak_write(int fd, const void *buf, size_t count)
+{
+ const char *ptr = buf;
+ size_t remaining = count;
+ ssize_t written;
+ int retries = 0;
+
+ while (remaining > 0) {
+ written = write(fd, ptr, remaining);
+ if (written > 0) {
+ ptr += written;
+ remaining -= written;
+ } else if (written == -1) {
+ if (errno == EINTR || errno == EAGAIN) {
+ /* Retry for recoverable errors */
+ if (++retries > MAX_WRITE_RETRIES) {
+ igt_warn("igt_write: Exceeded retry limit\n");
+ return -1;
+ }
+ continue;
+ } else {
+ /* Log unrecoverable error */
+ igt_warn("igt_write: unrecoverable write error");
+ return -1;
+ }
+ }
+ }
+ return count;
+}
+
+/**
+ * igt_kmemeak_cmd:
+ * @cmd: command to send to kmemleak
+ *
+ * Send a command to kmemleak.
+ *
+ * Returns: true if sending the command was successful, false otherwise.
+ */
+static bool igt_kmemleak_cmd(const char *cmd)
+{
+ int fp;
+ size_t wlen;
+ int cmdlen = strlen(cmd);
+
+ fp = open(igt_kmemleak_file, O_RDWR);
+ if (!fp)
+ return false;
+
+ wlen = igt_kmemleak_write(fp, cmd, cmdlen);
+ close(fp);
+
+ return wlen == cmdlen;
+}
+
+/**
+ * igt_kmemeak_clear:
+ *
+ * Trigger an immediate clear on kmemleak.
+ *
+ * Returns: true if sending the command to clear was successful, false
+ * otherwise.
+ */
+static bool igt_kmemleak_clear(void)
+{
+ return igt_kmemleak_cmd("clear");
+}
+
+/**
+ * igt_kmemeak_found_leaks:
+ *
+ * Check if kmemleak found any leaks by trying to read one byte from the
+ * kmemleak file.
+ *
+ * Returns: true if kmemleak found any leaks, false otherwise.
+ */
+static bool igt_kmemleak_found_leaks(void)
+{
+ FILE *fp;
+ char buf[1];
+ size_t rlen;
+
+ fp = fopen(igt_kmemleak_file, "r");
+ if (!fp)
+ return false;
+
+ rlen = fread(buf, 1, 1, fp);
+ fclose(fp);
+
+ if (rlen == 1)
+ lseek(fileno(fp), 0, SEEK_SET);
+
+ return rlen == 1;
+}
+
+/**
+ * igt_kmemeak_scan:
+ *
+ * Trigger an immediate scan on kmemleak.
+ *
+ * Returns: true if leaks are found. False on failure and when no leaks are
+ * found.
+ */
+static bool igt_kmemleak_scan(void)
+{
+ if (!igt_kmemleak_cmd("scan"))
+ return false;
+
+ /* kmemleak documentation states that "the memory scanning is only
+ * performed when the /sys/kernel/debug/kmemleak file is read." Read
+ * a byte to trigger the scan now.
+ */
+ return igt_kmemleak_found_leaks();
+}
+
+/**
+ * igt_kmemleak_append_to:
+ * @last_test: last test name to append to the file
+ * @resdirfd: file descriptor of the results directory
+ * @kmemleak_each: Are we scanning once or scanning after each test?
+ *
+ * Append the kmemleak file to the result file adding a header indicating if
+ * the leaks are for all tests or for a single one.
+ *
+ * Returns: true if appending to the file was successful, false otherwise.
+ */
+static bool igt_kmemleak_append_to(const char *last_test, int resdirfd,
+ bool kmemleak_each)
+{
+ const char *before = "kmemleaks found before running any test\n\n";
+ const char *once = "kmemleaks found after running all tests\n";
+ int kmemleakfd, resfilefd;
+ char buf[4096];
+ size_t rlen;
+
+ kmemleakfd = open(igt_kmemleak_file, O_RDONLY);
+ if (kmemleakfd < 0)
+ return false;
+
+ /* Seek back to first byte */
+ lseek(kmemleakfd, 0, SEEK_SET);
+
+ /* Open text file to append */
+ resfilefd = openat(resdirfd, KMEMLEAKRESFILENAME,
+ O_RDWR | O_CREAT | O_APPEND, 0666);
+ if (!resfilefd) {
+ close(kmemleakfd);
+ return false;
+ }
+
+ /* This is the header added before the content of the kmemleak file */
+ if (kmemleak_each)
+ if (!last_test)
+ igt_kmemleak_write(resfilefd, before, strlen(before));
+ else {
+ /* Write \n\n last_test \n to buf */
+ snprintf(buf, sizeof(buf),
+ "\n\nkmemleaks found after running %s:\n",
+ last_test);
+
+ igt_kmemleak_write(resfilefd, buf, strlen(buf));
+ memset(buf, 0, sizeof(buf));
+ }
+ else
+ igt_kmemleak_write(resfilefd, once, strlen(once));
+
+ if (igt_kmemleak_sync)
+ fsync(resfilefd);
+
+ while ((rlen = read(kmemleakfd, buf, sizeof(buf))) > 0) {
+ if (igt_kmemleak_write(resfilefd, buf, rlen) != rlen) {
+ close(resfilefd);
+ close(kmemleakfd);
+ return false;
+ }
+ if (igt_kmemleak_sync)
+ fsync(resfilefd);
+ }
+
+ close(resfilefd);
+ close(kmemleakfd);
+
+ return true;
+}
+
+/**
+ * igt_kmemeak_init:
+ * @unit_test_kmemleak_file: path to kmemleak file for unit testing
+ * @sync: sync the kmemleak file often
+ *
+ * Check if kmemleak is enabled in the kernel, if debugfs is mounted and
+ * if kmemleak file is present and readable. Also sets the igt_kmemleak_sync.
+ *
+ * Returns: true if kmemleak is enabled, false otherwise.
+ */
+bool igt_kmemleak_init(const char *unit_test_kmemleak_file, bool sync)
+{
+ FILE *fp;
+
+ igt_kmemleak_sync = sync;
+
+ if (unit_test_kmemleak_file)
+ snprintf(igt_kmemleak_file,
+ sizeof(igt_kmemleak_file),
+ "%s",
+ unit_test_kmemleak_file);
+
+ fp = fopen(igt_kmemleak_file, "r");
+ if (!fp)
+ return false;
+
+ fclose(fp);
+
+ return true;
+}
+
+/**
+ * igt_kmemleak:
+ * @last_test: last test name to append to the file
+ * @resdirfd: file descriptor of the results directory
+ * @kmemleak_each: Are we scanning once or scanning after each test?
+ *
+ * This is the main function that should be called when integrating igt_kmemleak
+ * into igt_runner or elsewhere. There are two flows:
+ * - run once: runs only once after all tests are completed
+ * - run for each test: runs after every test
+ *
+ * Returns: true on success, false otherwise.
+ */
+bool igt_kmemleak(const char *last_test, int resdirfd, bool kmemleak_each)
+{
+ /* Scan to collect results */
+ if (igt_kmemleak_scan())
+ if (!igt_kmemleak_append_to(last_test, resdirfd, kmemleak_each))
+ return false;
+
+ if (kmemleak_each)
+ igt_kmemleak_clear();
+
+ return true;
+}
diff --git a/lib/igt_kmemleak.h b/lib/igt_kmemleak.h
new file mode 100644
index 000000000..a3c142827
--- /dev/null
+++ b/lib/igt_kmemleak.h
@@ -0,0 +1,15 @@
+/* SPDX-License-Identifier: MIT
+ * Copyright © 2024 Intel Corporation
+ */
+
+#ifndef IGT_KMEMLEAK_H
+#define IGT_KMEMLEAK_H
+
+#include <stdbool.h>
+
+bool igt_kmemleak_init(const char *unit_test_kmemleak_file, bool sync);
+bool igt_kmemleak(const char *last_test, int resdirfd, bool kmemleak_each);
+
+#define KMEMLEAKRESFILENAME "kmemleak.txt"
+
+#endif /* IGT_KMEMLEAK_H */
diff --git a/lib/meson.build b/lib/meson.build
index 9fffdd3c6..7959dcacb 100644
--- a/lib/meson.build
+++ b/lib/meson.build
@@ -97,6 +97,7 @@ lib_sources = [
'igt_dummyload.c',
'igt_store.c',
'uwildmat/uwildmat.c',
+ 'igt_kmemleak.c',
'igt_kmod.c',
'igt_ktap.c',
'igt_panfrost.c',
diff --git a/lib/tests/igt_kmemleak.c b/lib/tests/igt_kmemleak.c
new file mode 100644
index 000000000..717ba2852
--- /dev/null
+++ b/lib/tests/igt_kmemleak.c
@@ -0,0 +1,259 @@
+// SPDX-License-Identifier: MIT
+/*
+ * Copyright © 2024 Intel Corporation
+ */
+
+#include <ctype.h>
+#include <fcntl.h>
+#include <stdio.h>
+#include <zlib.h>
+
+#include "igt.h"
+#include "igt_kmemleak.h"
+
+const char *kmemleak_file_example =
+"unreferenced object 0xffff888102a2e638 (size 80):\n"
+" comm \"swapper/0\", pid 1, jiffies 4294672730\n"
+" hex dump (first 32 bytes):\n"
+" 00 00 00 00 00 00 00 00 0d 01 a2 00 00 00 00 00 ................\n"
+" f0 7c 03 00 00 c9 ff ff 00 00 00 00 00 00 00 00 .|..............\n"
+" backtrace (crc 2df71a7e):\n"
+" [<ffffffff824cd71b>] kmemleak_alloc+0x4b/0x80\n"
+" [<ffffffff814e169b>] kmem_cache_alloc_noprof+0x2ab/0x370\n"
+" [<ffffffff81c2f4dc>] acpi_ps_alloc_op+0xdc/0xf0\n"
+" [<ffffffff81c2d650>] acpi_ps_create_op+0x1c0/0x400\n"
+" [<ffffffff81c2c8dc>] acpi_ps_parse_loop+0x16c/0xa60\n"
+" [<ffffffff81c2e94f>] acpi_ps_parse_aml+0x22f/0x5f0\n"
+" [<ffffffff81c2fa82>] acpi_ps_execute_method+0x152/0x380\n"
+" [<ffffffff81c233ed>] acpi_ns_evaluate+0x31d/0x5e0\n"
+" [<ffffffff81c2a606>] acpi_evaluate_object+0x206/0x490\n"
+" [<ffffffff81bf1202>] __acpi_power_off.isra.0+0x22/0x70\n"
+" [<ffffffff81bf275b>] acpi_turn_off_unused_power_resources+0xbb/0xf0\n"
+" [<ffffffff83867799>] acpi_scan_init+0x119/0x290\n"
+" [<ffffffff8386711a>] acpi_init+0x23a/0x590\n"
+" [<ffffffff81002c71>] do_one_initcall+0x61/0x3d0\n"
+" [<ffffffff837dce32>] kernel_init_freeable+0x3e2/0x680\n"
+" [<ffffffff824ca53b>] kernel_init+0x1b/0x170"
+"unreferenced object 0xffff888102a2ed18 (size 80):\n"
+" comm \"swapper/0\", pid 1, jiffies 4294672730\n"
+" hex dump (first 32 bytes):\n"
+" 38 e6 a2 02 81 88 ff ff 0d 11 2d 00 00 00 00 00 8.........-.....\n"
+" f2 7c 03 00 00 c9 ff ff 58 ea a2 02 81 88 ff ff .|......X.......\n"
+" backtrace (crc ec2a8bdc):\n"
+" [<ffffffff824cd71b>] kmemleak_alloc+0x4b/0x80\n"
+" [<ffffffff814e169b>] kmem_cache_alloc_noprof+0x2ab/0x370\n"
+" [<ffffffff81c2f4dc>] acpi_ps_alloc_op+0xdc/0xf0\n"
+" [<ffffffff81c2d650>] acpi_ps_create_op+0x1c0/0x400\n"
+" [<ffffffff81c2c8dc>] acpi_ps_parse_loop+0x16c/0xa60\n"
+" [<ffffffff81c2e94f>] acpi_ps_parse_aml+0x22f/0x5f0\n"
+" [<ffffffff81c2fa82>] acpi_ps_execute_method+0x152/0x380\n"
+" [<ffffffff81c233ed>] acpi_ns_evaluate+0x31d/0x5e0\n"
+" [<ffffffff81c2a606>] acpi_evaluate_object+0x206/0x490\n"
+" [<ffffffff81bf1202>] __acpi_power_off.isra.0+0x22/0x70\n"
+" [<ffffffff81bf275b>] acpi_turn_off_unused_power_resources+0xbb/0xf0\n"
+" [<ffffffff83867799>] acpi_scan_init+0x119/0x290\n"
+" [<ffffffff8386711a>] acpi_init+0x23a/0x590\n"
+" [<ffffffff81002c71>] do_one_initcall+0x61/0x3d0\n"
+" [<ffffffff837dce32>] kernel_init_freeable+0x3e2/0x680\n"
+" [<ffffffff824ca53b>] kernel_init+0x1b/0x170"
+"unreferenced object 0xffff888102a2ea58 (size 80):\n"
+" comm \"swapper/0\", pid 1, jiffies 4294672730\n"
+" hex dump (first 32 bytes):\n"
+" 38 e6 a2 02 81 88 ff ff 0d 01 a0 00 00 00 00 00 8...............\n"
+" f6 7c 03 00 00 c9 ff ff 00 00 00 00 00 00 00 00 .|..............\n"
+" backtrace (crc f911c0d1):\n"
+" [<ffffffff824cd71b>] kmemleak_alloc+0x4b/0x80\n"
+" [<ffffffff814e169b>] kmem_cache_alloc_noprof+0x2ab/0x370\n"
+" [<ffffffff81c2f4dc>] acpi_ps_alloc_op+0xdc/0xf0\n"
+" [<ffffffff81c2d650>] acpi_ps_create_op+0x1c0/0x400\n"
+" [<ffffffff81c2c8dc>] acpi_ps_parse_loop+0x16c/0xa60\n"
+" [<ffffffff81c2e94f>] acpi_ps_parse_aml+0x22f/0x5f0\n"
+" [<ffffffff81c2fa82>] acpi_ps_execute_method+0x152/0x380\n"
+" [<ffffffff81c233ed>] acpi_ns_evaluate+0x31d/0x5e0\n"
+" [<ffffffff81c2a606>] acpi_evaluate_object+0x206/0x490\n"
+" [<ffffffff81bf1202>] __acpi_power_off.isra.0+0x22/0x70\n"
+" [<ffffffff81bf275b>] acpi_turn_off_unused_power_resources+0xbb/0xf0\n"
+" [<ffffffff83867799>] acpi_scan_init+0x119/0x290\n"
+" [<ffffffff8386711a>] acpi_init+0x23a/0x590\n"
+" [<ffffffff81002c71>] do_one_initcall+0x61/0x3d0\n"
+" [<ffffffff837dce32>] kernel_init_freeable+0x3e2/0x680\n"
+" [<ffffffff824ca53b>] kernel_init+0x1b/0x170"
+"unreferenced object 0xffff888102a2e428 (size 80):\n"
+" comm \"swapper/0\", pid 1, jiffies 4294672730\n"
+" hex dump (first 32 bytes):\n"
+" 58 ea a2 02 81 88 ff ff 0d 01 35 00 00 00 00 00 X.........5.....\n"
+" fc 7c 03 00 00 c9 ff ff 00 00 00 00 00 00 00 00 .|..............\n"
+" backtrace (crc cb8aaffd):\n"
+" [<ffffffff824cd71b>] kmemleak_alloc+0x4b/0x80\n"
+" [<ffffffff814e169b>] kmem_cache_alloc_noprof+0x2ab/0x370\n"
+" [<ffffffff81c2f4dc>] acpi_ps_alloc_op+0xdc/0xf0\n"
+" [<ffffffff81c2d650>] acpi_ps_create_op+0x1c0/0x400\n"
+" [<ffffffff81c2c8dc>] acpi_ps_parse_loop+0x16c/0xa60\n"
+" [<ffffffff81c2e94f>] acpi_ps_parse_aml+0x22f/0x5f0\n"
+" [<ffffffff81c2fa82>] acpi_ps_execute_method+0x152/0x380\n"
+" [<ffffffff81c233ed>] acpi_ns_evaluate+0x31d/0x5e0\n"
+" [<ffffffff81c2a606>] acpi_evaluate_object+0x206/0x490\n"
+" [<ffffffff81bf1202>] __acpi_power_off.isra.0+0x22/0x70\n"
+" [<ffffffff81bf275b>] acpi_turn_off_unused_power_resources+0xbb/0xf0\n"
+" [<ffffffff83867799>] acpi_scan_init+0x119/0x290\n"
+" [<ffffffff8386711a>] acpi_init+0x23a/0x590\n"
+" [<ffffffff81002c71>] do_one_initcall+0x61/0x3d0\n"
+" [<ffffffff837dce32>] kernel_init_freeable+0x3e2/0x680\n"
+" [<ffffffff824ca53b>] kernel_init+0x1b/0x170"
+"unreferenced object 0xffff888102a2e008 (size 80):\n"
+" comm \"swapper/0\", pid 1, jiffies 4294672730\n"
+" hex dump (first 32 bytes):\n"
+" 28 e4 a2 02 81 88 ff ff 0d 01 2d 00 00 00 00 00 (.........-.....\n"
+" fc 7c 03 00 00 c9 ff ff c8 e2 a2 02 81 88 ff ff .|..............\n"
+" backtrace (crc 7f883e78):\n"
+" [<ffffffff824cd71b>] kmemleak_alloc+0x4b/0x80\n"
+" [<ffffffff814e169b>] kmem_cache_alloc_noprof+0x2ab/0x370\n"
+" [<ffffffff81c2f4dc>] acpi_ps_alloc_op+0xdc/0xf0\n"
+" [<ffffffff81c2b9e5>] acpi_ps_get_next_namepath+0x1f5/0x390\n"
+" [<ffffffff81c2cc15>] acpi_ps_parse_loop+0x4a5/0xa60\n"
+" [<ffffffff81c2e94f>] acpi_ps_parse_aml+0x22f/0x5f0\n"
+" [<ffffffff81c2fa82>] acpi_ps_execute_method+0x152/0x380\n"
+" [<ffffffff81c233ed>] acpi_ns_evaluate+0x31d/0x5e0\n"
+" [<ffffffff81c2a606>] acpi_evaluate_object+0x206/0x490\n"
+" [<ffffffff81bf1202>] __acpi_power_off.isra.0+0x22/0x70\n"
+" [<ffffffff81bf275b>] acpi_turn_off_unused_power_resources+0xbb/0xf0\n"
+" [<ffffffff83867799>] acpi_scan_init+0x119/0x290\n"
+" [<ffffffff8386711a>] acpi_init+0x23a/0x590\n"
+" [<ffffffff81002c71>] do_one_initcall+0x61/0x3d0\n"
+" [<ffffffff837dce32>] kernel_init_freeable+0x3e2/0x680\n"
+" [<ffffffff824ca53b>] kernel_init+0x1b/0x170"
+"unreferenced object 0xffff888102a2e2c8 (size 80):\n"
+" comm \"swapper/0\", pid 1, jiffies 4294672730\n"
+" hex dump (first 32 bytes):\n"
+" 28 e4 a2 02 81 88 ff ff 0d 01 73 00 00 00 00 00 (.........s.....\n"
+" 00 7d 03 00 00 c9 ff ff 00 00 00 00 00 00 00 00 .}..............\n"
+" backtrace (crc 338c016):\n"
+" [<ffffffff824cd71b>] kmemleak_alloc+0x4b/0x80\n"
+" [<ffffffff814e169b>] kmem_cache_alloc_noprof+0x2ab/0x370\n"
+" [<ffffffff81c2f4dc>] acpi_ps_alloc_op+0xdc/0xf0\n"
+" [<ffffffff81c2d650>] acpi_ps_create_op+0x1c0/0x400\n"
+" [<ffffffff81c2c8dc>] acpi_ps_parse_loop+0x16c/0xa60\n"
+" [<ffffffff81c2e94f>] acpi_ps_parse_aml+0x22f/0x5f0\n"
+" [<ffffffff81c2fa82>] acpi_ps_execute_method+0x152/0x380\n"
+" [<ffffffff81c233ed>] acpi_ns_evaluate+0x31d/0x5e0\n"
+" [<ffffffff81c2a606>] acpi_evaluate_object+0x206/0x490\n"
+" [<ffffffff81bf1202>] __acpi_power_off.isra.0+0x22/0x70\n"
+" [<ffffffff81bf275b>] acpi_turn_off_unused_power_resources+0xbb/0xf0\n"
+" [<ffffffff83867799>] acpi_scan_init+0x119/0x290\n"
+" [<ffffffff8386711a>] acpi_init+0x23a/0x590\n"
+" [<ffffffff81002c71>] do_one_initcall+0x61/0x3d0\n"
+" [<ffffffff837dce32>] kernel_init_freeable+0x3e2/0x680\n"
+" [<ffffffff824ca53b>] kernel_init+0x1b/0x170"
+"unreferenced object 0xffff888102a2e378 (size 80):\n"
+" comm \"swapper/0\", pid 1, jiffies 4294672730\n"
+" hex dump (first 32 bytes):\n"
+" c8 e2 a2 02 81 88 ff ff 0d 01 0d 00 00 00 00 00 ................\n"
+" 01 7d 03 00 00 c9 ff ff 98 e7 a2 02 81 88 ff ff .}..............\n"
+" backtrace (crc 665fb8a7):\n"
+" [<ffffffff824cd71b>] kmemleak_alloc+0x4b/0x80\n"
+" [<ffffffff814e169b>] kmem_cache_alloc_noprof+0x2ab/0x370\n"
+" [<ffffffff81c2f4dc>] acpi_ps_alloc_op+0xdc/0xf0\n"
+" [<ffffffff81c2d650>] acpi_ps_create_op+0x1c0/0x400\n"
+" [<ffffffff81c2c8dc>] acpi_ps_parse_loop+0x16c/0xa60\n"
+" [<ffffffff81c2e94f>] acpi_ps_parse_aml+0x22f/0x5f0\n"
+" [<ffffffff81c2fa82>] acpi_ps_execute_method+0x152/0x380\n"
+" [<ffffffff81c233ed>] acpi_ns_evaluate+0x31d/0x5e0\n"
+" [<ffffffff81c2a606>] acpi_evaluate_object+0x206/0x490\n"
+" [<ffffffff81bf1202>] __acpi_power_off.isra.0+0x22/0x70\n"
+" [<ffffffff81bf275b>] acpi_turn_off_unused_power_resources+0xbb/0xf0\n"
+" [<ffffffff83867799>] acpi_scan_init+0x119/0x290\n"
+" [<ffffffff8386711a>] acpi_init+0x23a/0x590\n"
+" [<ffffffff81002c71>] do_one_initcall+0x61/0x3d0\n"
+" [<ffffffff837dce32>] kernel_init_freeable+0x3e2/0x680\n"
+" [<ffffffff824ca53b>] kernel_init+0x1b/0x170"
+"unreferenced object 0xffff888102a2e798 (size 80):\n"
+" comm \"swapper/0\", pid 1, jiffies 4294672730\n"
+" hex dump (first 32 bytes):\n"
+" 7c8 e2 a2 02 81 88 ff ff 0d 01 98 00 00 00 00 00 ................\n"
+" 1b 7d 03 00 00 c9 ff ff 00 00 00 00 00 00 00 00 .}..............\n"
+" backtrace (crc b7a23a1c):\n"
+" [<ffffffff824cd71b>] kmemleak_alloc+0x4b/0x80\n"
+" [<ffffffff814e169b>] kmem_cache_alloc_noprof+0x2ab/0x370\n"
+" [<ffffffff81c2f4dc>] acpi_ps_alloc_op+0xdc/0xf0\n"
+" [<ffffffff81c2d650>] acpi_ps_create_op+0x1c0/0x400\n"
+" [<ffffffff81c2c8dc>] acpi_ps_parse_loop+0x16c/0xa60\n"
+" [<ffffffff81c2e94f>] acpi_ps_parse_aml+0x22f/0x5f0\n"
+" [<ffffffff81c2fa82>] acpi_ps_execute_method+0x152/0x380\n"
+" [<ffffffff81c233ed>] acpi_ns_evaluate+0x31d/0x5e0\n"
+" [<ffffffff81c2a606>] acpi_evaluate_object+0x206/0x490\n"
+" [<ffffffff81bf1202>] __acpi_power_off.isra.0+0x22/0x70\n"
+" [<ffffffff81bf275b>] acpi_turn_off_unused_power_resources+0xbb/0xf0\n"
+" [<ffffffff83867799>] acpi_scan_init+0x119/0x290\n"
+" [<ffffffff8386711a>] acpi_init+0x23a/0x590\n"
+" [<ffffffff81002c71>] do_one_initcall+0x61/0x3d0\n"
+" [<ffffffff837dce32>] kernel_init_freeable+0x3e2/0x680\n"
+" [<ffffffff824ca53b>] kernel_init+0x1b/0x170"
+"unreferenced object 0xffff888102a2e0b8 (size 80):\n"
+" comm \"swapper/0\", pid 1, jiffies 4294672730\n"
+" hex dump (first 32 bytes):\n"
+" 98 e7 a2 02 81 88 ff ff 0d 01 2d 00 00 00 00 00 ..........-.....\n"
+" 1c 7d 03 00 00 c9 ff ff 00 00 00 00 00 00 00 00 .}..............\n"
+" backtrace (crc 14d67a9c):\n"
+" [<ffffffff824cd71b>] kmemleak_alloc+0x4b/0x80\n"
+" [<ffffffff814e169b>] kmem_cache_alloc_noprof+0x2ab/0x370\n"
+" [<ffffffff81c2f4dc>] acpi_ps_alloc_op+0xdc/0xf0\n"
+" [<ffffffff81c2d650>] acpi_ps_create_op+0x1c0/0x400\n"
+" [<ffffffff81c2c8dc>] acpi_ps_parse_loop+0x16c/0xa60\n"
+" [<ffffffff81c2e94f>] acpi_ps_parse_aml+0x22f/0x5f0\n"
+" [<ffffffff81c2fa82>] acpi_ps_execute_method+0x152/0x380\n"
+" [<ffffffff81c233ed>] acpi_ns_evaluate+0x31d/0x5e0\n"
+" [<ffffffff81c2a606>] acpi_evaluate_object+0x206/0x490\n"
+" [<ffffffff81bf1202>] __acpi_power_off.isra.0+0x22/0x70\n"
+" [<ffffffff81bf275b>] acpi_turn_off_unused_power_resources+0xbb/0xf0\n"
+" [<ffffffff83867799>] acpi_scan_init+0x119/0x290\n"
+" [<ffffffff8386711a>] acpi_init+0x23a/0x590\n"
+" [<ffffffff81002c71>] do_one_initcall+0x61/0x3d0\n"
+" [<ffffffff837dce32>] kernel_init_freeable+0x3e2/0x680\n"
+" [<ffffffff824ca53b>] kernel_init+0x1b/0x170\n";
+
+static const char *igt_kmemleak_unit_testing_resdir = "/tmp";
+
+igt_main
+{
+ int resdirfd = 0;
+
+ igt_subtest_group {
+ igt_subtest("test_igt_kmemleak_init") {
+ char unit_testing_kmemleak_filepath[256] = "/tmp/igt_kmemleak_test_XXXXXX";
+ int written_bytes;
+ bool res;
+ int fd;
+
+ fd = mkstemp(unit_testing_kmemleak_filepath);
+ igt_assert(fd >= 0);
+
+ written_bytes = write(fd, kmemleak_file_example,
+ strlen(kmemleak_file_example));
+ igt_assert_eq(written_bytes, strlen(kmemleak_file_example));
+
+ close(fd);
+
+ res = igt_kmemleak_init(unit_testing_kmemleak_filepath, true);
+ igt_assert(res);
+ }
+ igt_fixture
+ igt_assert(resdirfd = open(igt_kmemleak_unit_testing_resdir,
+ O_DIRECTORY | O_RDONLY));
+
+ igt_subtest("test_igt_kmemleak_once")
+ igt_assert(igt_kmemleak(NULL, resdirfd, false));
+
+ igt_fixture {
+ /* Delete the result file */
+ unlinkat(resdirfd, KMEMLEAKRESFILENAME, 0);
+ }
+ igt_subtest("test_igt_kmemleak_each") {
+ igt_assert(igt_kmemleak("test_name_1", resdirfd, true));
+ igt_assert(igt_kmemleak("test_name_2", resdirfd, true));
+ igt_assert(igt_kmemleak("test_name_3", resdirfd, true));
+ }
+ igt_fixture {
+ close(resdirfd);
+ }
+ }
+}
diff --git a/lib/tests/meson.build b/lib/tests/meson.build
index 1ce19f63c..5c42408d5 100644
--- a/lib/tests/meson.build
+++ b/lib/tests/meson.build
@@ -16,6 +16,7 @@ lib_tests = [
'igt_ktap_parser',
'igt_list_only',
'igt_invalid_subtest_name',
+ 'igt_kmemleak',
'igt_nesting',
'igt_no_exit',
'igt_runnercomms_packets',
--
2.34.1
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