From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from gabe.freedesktop.org (gabe.freedesktop.org [131.252.210.177]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id 648FEC0218A for ; Tue, 28 Jan 2025 15:16:41 +0000 (UTC) Received: from gabe.freedesktop.org (localhost [127.0.0.1]) by gabe.freedesktop.org (Postfix) with ESMTP id 2760110E684; Tue, 28 Jan 2025 15:16:41 +0000 (UTC) Authentication-Results: gabe.freedesktop.org; dkim=pass (2048-bit key; unprotected) header.d=intel.com header.i=@intel.com header.b="iTCwwycR"; dkim-atps=neutral Received: from mgamail.intel.com (mgamail.intel.com [198.175.65.18]) by gabe.freedesktop.org (Postfix) with ESMTPS id C904510E686 for ; Tue, 28 Jan 2025 15:16:40 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=intel.com; i=@intel.com; q=dns/txt; s=Intel; t=1738077400; x=1769613400; h=from:to:cc:subject:date:message-id:in-reply-to: references:mime-version:content-transfer-encoding; bh=Aq7UsJ8/jIj8EJg2zB5l++zEQkTyu/SrM8x4b9ygGWk=; b=iTCwwycRwAY2wj0B4Vjxoe+FwoQldsy3+ZFJt0L4UZEQXslBBWl6a+48 eal20FA0CMKSyVVJ1p9o8On45l8L/NlmhOehgzQ5gEwRWaUuSWN8RT8sh XhyI0fJn5KoqtWuGt8SdO8rrCswohGsTwSK6LRCw1+OsavXnmiasLvEgw 1qNJaunAqSs6NX260IUd3h7vTwe7pdAyTXnzhKES+LHBrUMPJp0UICkgI ENJ+WdymrF88z0zSwtbqgAf9srTLFA13KL3q7BsX8fwjC1x+qY1qYQmNu JjRe+a6xaD0I94QhfL/E/pt94lwRuJBnQhp0pkrY1HBsrNqRGRVbjdlxm A==; X-CSE-ConnectionGUID: sGRoknFsQ3GF3WRGpa/Ubg== X-CSE-MsgGUID: TIrI+YqVTAGAOUl12gdQSg== X-IronPort-AV: E=McAfee;i="6700,10204,11314"; a="38667847" X-IronPort-AV: E=Sophos;i="6.12,310,1728975600"; d="scan'208";a="38667847" Received: from fmviesa004.fm.intel.com ([10.60.135.144]) by orvoesa110.jf.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 28 Jan 2025 07:16:39 -0800 X-CSE-ConnectionGUID: eFOeWIMCRbGzQQ4RetkVFQ== X-CSE-MsgGUID: 5WJchy+wSw6Hg3WfbNJiZg== X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="6.13,241,1732608000"; d="scan'208";a="113763901" Received: from hpabst-mobl.ger.corp.intel.com (HELO friendship7-home.clients.intel.com) ([10.246.21.97]) by fmviesa004-auth.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 28 Jan 2025 07:16:37 -0800 From: Peter Senna Tschudin To: igt-dev@lists.freedesktop.org Cc: Peter Senna Tschudin , ryszard.knop@intel.com, lucas.demarchi@intel.com, katarzyna.piecielska@intel.com, Jonathan Cavitt Subject: [PATCH i-g-t v4 1/2] lib/igt_kmemleak: library to interact with kmemleak Date: Tue, 28 Jan 2025 16:15:36 +0100 Message-Id: <20250128151537.515639-2-peter.senna@linux.intel.com> X-Mailer: git-send-email 2.34.1 In-Reply-To: <20250128151537.515639-1-peter.senna@linux.intel.com> References: <20250128151537.515639-1-peter.senna@linux.intel.com> MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit X-BeenThere: igt-dev@lists.freedesktop.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Development mailing list for IGT GPU Tools List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: igt-dev-bounces@lists.freedesktop.org Sender: "igt-dev" 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? - bool sync: sync after each write? CC: ryszard.knop@intel.com CC: lucas.demarchi@intel.com CC: katarzyna.piecielska@intel.com Reviewed-by: Jonathan Cavitt Signed-off-by: Peter Senna Tschudin --- lib/igt_kmemleak.c | 274 +++++++++++++++++++++++++++++++++++++++ lib/igt_kmemleak.h | 16 +++ lib/meson.build | 1 + lib/tests/igt_kmemleak.c | 267 ++++++++++++++++++++++++++++++++++++++ lib/tests/meson.build | 1 + 5 files changed, 559 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..b875d95a2 --- /dev/null +++ b/lib/igt_kmemleak.c @@ -0,0 +1,274 @@ +// SPDX-License-Identifier: MIT +/* + * Copyright © 2024 Intel Corporation + */ + +#include +#include +#include +#include +#include + +#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"; + +#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 bool 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 false; + } + continue; + } else { + /* Log unrecoverable error */ + igt_warn("igt_write: unrecoverable write error"); + return false; + } + } else if (written == 0) { + if (++retries > MAX_WRITE_RETRIES) { + igt_warn("igt_write: Exceeded retry limit\n"); + return false; + } + } + } + return true; +} + +/** + * 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; + bool res; + + fp = open(igt_kmemleak_file, O_RDWR); + if (!fp) + return false; + + res = igt_kmemleak_write(fp, cmd, strlen(cmd)); + close(fp); + + return res; +} + +/** + * 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); + + if (rlen == 1) + lseek(fileno(fp), 0, SEEK_SET); + + fclose(fp); + + 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? + * @sync: sync the kmemleak file often + * + * 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, bool sync) +{ + 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 (sync) + fsync(resfilefd); + + while ((rlen = read(kmemleakfd, buf, sizeof(buf))) > 0) { + if (!igt_kmemleak_write(resfilefd, buf, rlen)) { + close(resfilefd); + close(kmemleakfd); + return false; + } + if (sync) + fsync(resfilefd); + } + + close(resfilefd); + close(kmemleakfd); + + return true; +} + +/** + * igt_kmemeak_init: + * @unit_test_kmemleak_file: path to kmemleak file for unit testing + * + * Check if kmemleak is enabled in the kernel, if debugfs is mounted and + * if kmemleak file is present and readable. + * + * Returns: true if kmemleak is enabled, false otherwise. + */ +bool igt_kmemleak_init(const char *unit_test_kmemleak_file) +{ + FILE *fp; + + 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? + * @sync: sync the kmemleak file often + * + * 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, + bool sync) +{ + /* Scan to collect results */ + if (igt_kmemleak_scan()) + if (!igt_kmemleak_append_to(last_test, resdirfd, + kmemleak_each, sync)) + 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..cf7440384 --- /dev/null +++ b/lib/igt_kmemleak.h @@ -0,0 +1,16 @@ +/* SPDX-License-Identifier: MIT + * Copyright © 2024 Intel Corporation + */ + +#ifndef IGT_KMEMLEAK_H +#define IGT_KMEMLEAK_H + +#include + +bool igt_kmemleak_init(const char *unit_test_kmemleak_file); +bool igt_kmemleak(const char *last_test, int resdirfd, bool kmemleak_each, + bool sync); + +#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..a69ed2d1f --- /dev/null +++ b/lib/tests/igt_kmemleak.c @@ -0,0 +1,267 @@ +// SPDX-License-Identifier: MIT +/* + * Copyright © 2024 Intel Corporation + */ + +#include +#include +#include +#include + +#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" +" [] kmemleak_alloc+0x4b/0x80\n" +" [] kmem_cache_alloc_noprof+0x2ab/0x370\n" +" [] acpi_ps_alloc_op+0xdc/0xf0\n" +" [] acpi_ps_create_op+0x1c0/0x400\n" +" [] acpi_ps_parse_loop+0x16c/0xa60\n" +" [] acpi_ps_parse_aml+0x22f/0x5f0\n" +" [] acpi_ps_execute_method+0x152/0x380\n" +" [] acpi_ns_evaluate+0x31d/0x5e0\n" +" [] acpi_evaluate_object+0x206/0x490\n" +" [] __acpi_power_off.isra.0+0x22/0x70\n" +" [] acpi_turn_off_unused_power_resources+0xbb/0xf0\n" +" [] acpi_scan_init+0x119/0x290\n" +" [] acpi_init+0x23a/0x590\n" +" [] do_one_initcall+0x61/0x3d0\n" +" [] kernel_init_freeable+0x3e2/0x680\n" +" [] 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" +" [] kmemleak_alloc+0x4b/0x80\n" +" [] kmem_cache_alloc_noprof+0x2ab/0x370\n" +" [] acpi_ps_alloc_op+0xdc/0xf0\n" +" [] acpi_ps_create_op+0x1c0/0x400\n" +" [] acpi_ps_parse_loop+0x16c/0xa60\n" +" [] acpi_ps_parse_aml+0x22f/0x5f0\n" +" [] acpi_ps_execute_method+0x152/0x380\n" +" [] acpi_ns_evaluate+0x31d/0x5e0\n" +" [] acpi_evaluate_object+0x206/0x490\n" +" [] __acpi_power_off.isra.0+0x22/0x70\n" +" [] acpi_turn_off_unused_power_resources+0xbb/0xf0\n" +" [] acpi_scan_init+0x119/0x290\n" +" [] acpi_init+0x23a/0x590\n" +" [] do_one_initcall+0x61/0x3d0\n" +" [] kernel_init_freeable+0x3e2/0x680\n" +" [] 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" +" [] kmemleak_alloc+0x4b/0x80\n" +" [] kmem_cache_alloc_noprof+0x2ab/0x370\n" +" [] acpi_ps_alloc_op+0xdc/0xf0\n" +" [] acpi_ps_create_op+0x1c0/0x400\n" +" [] acpi_ps_parse_loop+0x16c/0xa60\n" +" [] acpi_ps_parse_aml+0x22f/0x5f0\n" +" [] acpi_ps_execute_method+0x152/0x380\n" +" [] acpi_ns_evaluate+0x31d/0x5e0\n" +" [] acpi_evaluate_object+0x206/0x490\n" +" [] __acpi_power_off.isra.0+0x22/0x70\n" +" [] acpi_turn_off_unused_power_resources+0xbb/0xf0\n" +" [] acpi_scan_init+0x119/0x290\n" +" [] acpi_init+0x23a/0x590\n" +" [] do_one_initcall+0x61/0x3d0\n" +" [] kernel_init_freeable+0x3e2/0x680\n" +" [] 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" +" [] kmemleak_alloc+0x4b/0x80\n" +" [] kmem_cache_alloc_noprof+0x2ab/0x370\n" +" [] acpi_ps_alloc_op+0xdc/0xf0\n" +" [] acpi_ps_create_op+0x1c0/0x400\n" +" [] acpi_ps_parse_loop+0x16c/0xa60\n" +" [] acpi_ps_parse_aml+0x22f/0x5f0\n" +" [] acpi_ps_execute_method+0x152/0x380\n" +" [] acpi_ns_evaluate+0x31d/0x5e0\n" +" [] acpi_evaluate_object+0x206/0x490\n" +" [] __acpi_power_off.isra.0+0x22/0x70\n" +" [] acpi_turn_off_unused_power_resources+0xbb/0xf0\n" +" [] acpi_scan_init+0x119/0x290\n" +" [] acpi_init+0x23a/0x590\n" +" [] do_one_initcall+0x61/0x3d0\n" +" [] kernel_init_freeable+0x3e2/0x680\n" +" [] 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" +" [] kmemleak_alloc+0x4b/0x80\n" +" [] kmem_cache_alloc_noprof+0x2ab/0x370\n" +" [] acpi_ps_alloc_op+0xdc/0xf0\n" +" [] acpi_ps_get_next_namepath+0x1f5/0x390\n" +" [] acpi_ps_parse_loop+0x4a5/0xa60\n" +" [] acpi_ps_parse_aml+0x22f/0x5f0\n" +" [] acpi_ps_execute_method+0x152/0x380\n" +" [] acpi_ns_evaluate+0x31d/0x5e0\n" +" [] acpi_evaluate_object+0x206/0x490\n" +" [] __acpi_power_off.isra.0+0x22/0x70\n" +" [] acpi_turn_off_unused_power_resources+0xbb/0xf0\n" +" [] acpi_scan_init+0x119/0x290\n" +" [] acpi_init+0x23a/0x590\n" +" [] do_one_initcall+0x61/0x3d0\n" +" [] kernel_init_freeable+0x3e2/0x680\n" +" [] 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" +" [] kmemleak_alloc+0x4b/0x80\n" +" [] kmem_cache_alloc_noprof+0x2ab/0x370\n" +" [] acpi_ps_alloc_op+0xdc/0xf0\n" +" [] acpi_ps_create_op+0x1c0/0x400\n" +" [] acpi_ps_parse_loop+0x16c/0xa60\n" +" [] acpi_ps_parse_aml+0x22f/0x5f0\n" +" [] acpi_ps_execute_method+0x152/0x380\n" +" [] acpi_ns_evaluate+0x31d/0x5e0\n" +" [] acpi_evaluate_object+0x206/0x490\n" +" [] __acpi_power_off.isra.0+0x22/0x70\n" +" [] acpi_turn_off_unused_power_resources+0xbb/0xf0\n" +" [] acpi_scan_init+0x119/0x290\n" +" [] acpi_init+0x23a/0x590\n" +" [] do_one_initcall+0x61/0x3d0\n" +" [] kernel_init_freeable+0x3e2/0x680\n" +" [] 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" +" [] kmemleak_alloc+0x4b/0x80\n" +" [] kmem_cache_alloc_noprof+0x2ab/0x370\n" +" [] acpi_ps_alloc_op+0xdc/0xf0\n" +" [] acpi_ps_create_op+0x1c0/0x400\n" +" [] acpi_ps_parse_loop+0x16c/0xa60\n" +" [] acpi_ps_parse_aml+0x22f/0x5f0\n" +" [] acpi_ps_execute_method+0x152/0x380\n" +" [] acpi_ns_evaluate+0x31d/0x5e0\n" +" [] acpi_evaluate_object+0x206/0x490\n" +" [] __acpi_power_off.isra.0+0x22/0x70\n" +" [] acpi_turn_off_unused_power_resources+0xbb/0xf0\n" +" [] acpi_scan_init+0x119/0x290\n" +" [] acpi_init+0x23a/0x590\n" +" [] do_one_initcall+0x61/0x3d0\n" +" [] kernel_init_freeable+0x3e2/0x680\n" +" [] 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" +" [] kmemleak_alloc+0x4b/0x80\n" +" [] kmem_cache_alloc_noprof+0x2ab/0x370\n" +" [] acpi_ps_alloc_op+0xdc/0xf0\n" +" [] acpi_ps_create_op+0x1c0/0x400\n" +" [] acpi_ps_parse_loop+0x16c/0xa60\n" +" [] acpi_ps_parse_aml+0x22f/0x5f0\n" +" [] acpi_ps_execute_method+0x152/0x380\n" +" [] acpi_ns_evaluate+0x31d/0x5e0\n" +" [] acpi_evaluate_object+0x206/0x490\n" +" [] __acpi_power_off.isra.0+0x22/0x70\n" +" [] acpi_turn_off_unused_power_resources+0xbb/0xf0\n" +" [] acpi_scan_init+0x119/0x290\n" +" [] acpi_init+0x23a/0x590\n" +" [] do_one_initcall+0x61/0x3d0\n" +" [] kernel_init_freeable+0x3e2/0x680\n" +" [] 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" +" [] kmemleak_alloc+0x4b/0x80\n" +" [] kmem_cache_alloc_noprof+0x2ab/0x370\n" +" [] acpi_ps_alloc_op+0xdc/0xf0\n" +" [] acpi_ps_create_op+0x1c0/0x400\n" +" [] acpi_ps_parse_loop+0x16c/0xa60\n" +" [] acpi_ps_parse_aml+0x22f/0x5f0\n" +" [] acpi_ps_execute_method+0x152/0x380\n" +" [] acpi_ns_evaluate+0x31d/0x5e0\n" +" [] acpi_evaluate_object+0x206/0x490\n" +" [] __acpi_power_off.isra.0+0x22/0x70\n" +" [] acpi_turn_off_unused_power_resources+0xbb/0xf0\n" +" [] acpi_scan_init+0x119/0x290\n" +" [] acpi_init+0x23a/0x590\n" +" [] do_one_initcall+0x61/0x3d0\n" +" [] kernel_init_freeable+0x3e2/0x680\n" +" [] kernel_init+0x1b/0x170\n"; + +static const char *igt_kmemleak_unit_testing_resdir = "/tmp"; + +igt_main +{ + char unit_testing_kmemleak_filepath[256] = "/tmp/igt_kmemleak_test_XXXXXX"; + int written_bytes; + int resdirfd; + int fd; + + igt_fixture { + /* resdirfd is used by igt_kmemleak() to store results */ + igt_assert(resdirfd = open(igt_kmemleak_unit_testing_resdir, + O_DIRECTORY | O_RDONLY)); + + /* Try to delete results file in case of leftovers, + * ignoring errors as the file may not exist + */ + unlinkat(resdirfd, KMEMLEAKRESFILENAME, 0); + + /* Creating a fake kmemleak file for unit testing */ + 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); + + /* Initializing igt_kmemleak with a fake kmemleak file + * for unit testing + */ + igt_assert(igt_kmemleak_init(unit_testing_kmemleak_filepath)); + } + + igt_subtest_group { + igt_subtest("test_igt_kmemleak_once") + igt_assert(igt_kmemleak(NULL, resdirfd, false, true)); + + igt_subtest("test_igt_kmemleak_each") { + igt_assert(igt_kmemleak("test_name_1", resdirfd, + true, false)); + igt_assert(igt_kmemleak("test_name_2", resdirfd, + true, true)); + igt_assert(igt_kmemleak("test_name_3", resdirfd, + true, false)); + } + igt_fixture { + close(resdirfd); + } + } + igt_fixture + unlinkat(resdirfd, KMEMLEAKRESFILENAME, 0); +} 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