Merge tag 'net-next-6.3' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net-nextgrafted

Pull networking updates from Jakub Kicinski:
 "Core:

   - Add dedicated kmem_cache for typical/small skb->head, avoid having
     to access struct page at kfree time, and improve memory use.

   - Introduce sysctl to set default RPS configuration for new netdevs.

   - Define Netlink protocol specification format which can be used to
     describe messages used by each family and auto-generate parsers.
     Add tools for generating kernel data structures and uAPI headers.

   - Expose all net/core sysctls inside netns.

   - Remove 4s sleep in netpoll if carrier is instantly detected on
     boot.

   - Add configurable limit of MDB entries per port, and port-vlan.

   - Continue populating drop reasons throughout the stack.

   - Retire a handful of legacy Qdiscs and classifiers.

  Protocols:

   - Support IPv4 big TCP (TSO frames larger than 64kB).

   - Add IP_LOCAL_PORT_RANGE socket option, to control local port range
     on socket by socket basis.

   - Track and report in procfs number of MPTCP sockets used.

   - Support mixing IPv4 and IPv6 flows in the in-kernel MPTCP path
     manager.

   - IPv6: don't check net.ipv6.route.max_size and rely on garbage
     collection to free memory (similarly to IPv4).

   - Support Penultimate Segment Pop (PSP) flavor in SRv6 (RFC8986).

   - ICMP: add per-rate limit counters.

   - Add support for user scanning requests in ieee802154.

   - Remove static WEP support.

   - Support minimal Wi-Fi 7 Extremely High Throughput (EHT) rate
     reporting.

   - WiFi 7 EHT channel puncturing support (client & AP).

  BPF:

   - Add a rbtree data structure following the "next-gen data structure"
     precedent set by recently added linked list, that is, by using
     kfunc + kptr instead of adding a new BPF map type.

   - Expose XDP hints via kfuncs with initial support for RX hash and
     timestamp metadata.

   - Add BPF_F_NO_TUNNEL_KEY extension to bpf_skb_set_tunnel_key to
     better support decap on GRE tunnel devices not operating in collect
     metadata.

   - Improve x86 JIT's codegen for PROBE_MEM runtime error checks.

   - Remove the need for trace_printk_lock for bpf_trace_printk and
     bpf_trace_vprintk helpers.

   - Extend libbpf's bpf_tracing.h support for tracing arguments of
     kprobes/uprobes and syscall as a special case.

   - Significantly reduce the search time for module symbols by
     livepatch and BPF.

   - Enable cpumasks to be used as kptrs, which is useful for tracing
     programs tracking which tasks end up running on which CPUs in
     different time intervals.

   - Add support for BPF trampoline on s390x and riscv64.

   - Add capability to export the XDP features supported by the NIC.

   - Add __bpf_kfunc tag for marking kernel functions as kfuncs.

   - Add cgroup.memory=nobpf kernel parameter option to disable BPF
     memory accounting for container environments.

  Netfilter:

   - Remove the CLUSTERIP target. It has been marked as obsolete for
     years, and we still have WARN splats wrt races of the out-of-band
     /proc interface installed by this target.

   - Add 'destroy' commands to nf_tables. They are identical to the
     existing 'delete' commands, but do not return an error if the
     referenced object (set, chain, rule...) did not exist.

  Driver API:

   - Improve cpumask_local_spread() locality to help NICs set the right
     IRQ affinity on AMD platforms.

   - Separate C22 and C45 MDIO bus transactions more clearly.

   - Introduce new DCB table to control DSCP rewrite on egress.

   - Support configuration of Physical Layer Collision Avoidance (PLCA)
     Reconciliation Sublayer (RS) (802.3cg-2019). Modern version of
     shared medium Ethernet.

   - Support for MAC Merge layer (IEEE 802.3-2018 clause 99). Allowing
     preemption of low priority frames by high priority frames.

   - Add support for controlling MACSec offload using netlink SET.

   - Rework devlink instance refcounts to allow registration and
     de-registration under the instance lock. Split the code into
     multiple files, drop some of the unnecessarily granular locks and
     factor out common parts of netlink operation handling.

   - Add TX frame aggregation parameters (for USB drivers).

   - Add a new attr TCA_EXT_WARN_MSG to report TC (offload) warning
     messages with notifications for debug.

   - Allow offloading of UDP NEW connections via act_ct.

   - Add support for per action HW stats in TC.

   - Support hardware miss to TC action (continue processing in SW from
     a specific point in the action chain).

   - Warn if old Wireless Extension user space interface is used with
     modern cfg80211/mac80211 drivers. Do not support Wireless
     Extensions for Wi-Fi 7 devices at all. Everyone should switch to
     using nl80211 interface instead.

   - Improve the CAN bit timing configuration. Use extack to return
     error messages directly to user space, update the SJW handling,
     including the definition of a new default value that will benefit
     CAN-FD controllers, by increasing their oscillator tolerance.

  New hardware / drivers:

   - Ethernet:
      - nVidia BlueField-3 support (control traffic driver)
      - Ethernet support for imx93 SoCs
      - Motorcomm yt8531 gigabit Ethernet PHY
      - onsemi NCN26000 10BASE-T1S PHY (with support for PLCA)
      - Microchip LAN8841 PHY (incl. cable diagnostics and PTP)
      - Amlogic gxl MDIO mux

   - WiFi:
      - RealTek RTL8188EU (rtl8xxxu)
      - Qualcomm Wi-Fi 7 devices (ath12k)

   - CAN:
      - Renesas R-Car V4H

  Drivers:

   - Bluetooth:
      - Set Per Platform Antenna Gain (PPAG) for Intel controllers.

   - Ethernet NICs:
      - Intel (1G, igc):
         - support TSN / Qbv / packet scheduling features of i226 model
      - Intel (100G, ice):
         - use GNSS subsystem instead of TTY
         - multi-buffer XDP support
         - extend support for GPIO pins to E823 devices
      - nVidia/Mellanox:
         - update the shared buffer configuration on PFC commands
         - implement PTP adjphase function for HW offset control
         - TC support for Geneve and GRE with VF tunnel offload
         - more efficient crypto key management method
         - multi-port eswitch support
      - Netronome/Corigine:
         - add DCB IEEE support
         - support IPsec offloading for NFP3800
      - Freescale/NXP (enetc):
         - support XDP_REDIRECT for XDP non-linear buffers
         - improve reconfig, avoid link flap and waiting for idle
         - support MAC Merge layer
      - Other NICs:
         - sfc/ef100: add basic devlink support for ef100
         - ionic: rx_push mode operation (writing descriptors via MMIO)
         - bnxt: use the auxiliary bus abstraction for RDMA
         - r8169: disable ASPM and reset bus in case of tx timeout
         - cpsw: support QSGMII mode for J721e CPSW9G
         - cpts: support pulse-per-second output
         - ngbe: add an mdio bus driver
         - usbnet: optimize usbnet_bh() by avoiding unnecessary queuing
         - r8152: handle devices with FW with NCM support
         - amd-xgbe: support 10Mbps, 2.5GbE speeds and rx-adaptation
         - virtio-net: support multi buffer XDP
         - virtio/vsock: replace virtio_vsock_pkt with sk_buff
         - tsnep: XDP support

   - Ethernet high-speed switches:
      - nVidia/Mellanox (mlxsw):
         - add support for latency TLV (in FW control messages)
      - Microchip (sparx5):
         - separate explicit and implicit traffic forwarding rules, make
           the implicit rules always active
         - add support for egress DSCP rewrite
         - IS0 VCAP support (Ingress Classification)
         - IS2 VCAP filters (protos, L3 addrs, L4 ports, flags, ToS
           etc.)
         - ES2 VCAP support (Egress Access Control)
         - support for Per-Stream Filtering and Policing (802.1Q,
           8.6.5.1)

   - Ethernet embedded switches:
      - Marvell (mv88e6xxx):
         - add MAB (port auth) offload support
         - enable PTP receive for mv88e6390
      - NXP (ocelot):
         - support MAC Merge layer
         - support for the the vsc7512 internal copper phys
      - Microchip:
         - lan9303: convert to PHYLINK
         - lan966x: support TC flower filter statistics
         - lan937x: PTP support for KSZ9563/KSZ8563 and LAN937x
         - lan937x: support Credit Based Shaper configuration
         - ksz9477: support Energy Efficient Ethernet
      - other:
         - qca8k: convert to regmap read/write API, use bulk operations
         - rswitch: Improve TX timestamp accuracy

   - Intel WiFi (iwlwifi):
      - EHT (Wi-Fi 7) rate reporting
      - STEP equalizer support: transfer some STEP (connection to radio
        on platforms with integrated wifi) related parameters from the
        BIOS to the firmware.

   - Qualcomm 802.11ax WiFi (ath11k):
      - IPQ5018 support
      - Fine Timing Measurement (FTM) responder role support
      - channel 177 support

   - MediaTek WiFi (mt76):
      - per-PHY LED support
      - mt7996: EHT (Wi-Fi 7) support
      - Wireless Ethernet Dispatch (WED) reset support
      - switch to using page pool allocator

   - RealTek WiFi (rtw89):
      - support new version of Bluetooth co-existance

   - Mobile:
      - rmnet: support TX aggregation"

* tag 'net-next-6.3' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net-next: (1872 commits)
  page_pool: add a comment explaining the fragment counter usage
  net: ethtool: fix __ethtool_dev_mm_supported() implementation
  ethtool: pse-pd: Fix double word in comments
  xsk: add linux/vmalloc.h to xsk.c
  sefltests: netdevsim: wait for devlink instance after netns removal
  selftest: fib_tests: Always cleanup before exit
  net/mlx5e: Align IPsec ASO result memory to be as required by hardware
  net/mlx5e: TC, Set CT miss to the specific ct action instance
  net/mlx5e: Rename CHAIN_TO_REG to MAPPED_OBJ_TO_REG
  net/mlx5: Refactor tc miss handling to a single function
  net/mlx5: Kconfig: Make tc offload depend on tc skb extension
  net/sched: flower: Support hardware miss to tc action
  net/sched: flower: Move filter handle initialization earlier
  net/sched: cls_api: Support hardware miss to tc action
  net/sched: Rename user cookie and act cookie
  sfc: fix builds without CONFIG_RTC_LIB
  sfc: clean up some inconsistent indentings
  net/mlx4_en: Introduce flexible array to silence overflow warning
  net: lan966x: Fix possible deadlock inside PTP
  net/ulp: Remove redundant ->clone() test in inet_clone_ulp().
  ...

1 files changed, 476 insertions, 0 deletions

diff --git a/kernel/kallsyms_selftest.c b/kernel/kallsyms_selftest.c
new file mode 100644
index 000000000..bfbc12da3
--- /dev/null
+++ b/kernel/kallsyms_selftest.c
@@ -0,0 +1,476 @@
+// SPDX-License-Identifier: GPL-2.0-or-later
+/*
+ * Test the function and performance of kallsyms
+ *
+ * Copyright (C) Huawei Technologies Co., Ltd., 2022
+ *
+ * Authors: Zhen Lei <thunder.leizhen@huawei.com> Huawei
+ */
+
+#define pr_fmt(fmt) "kallsyms_selftest: " fmt
+
+#include <linux/init.h>
+#include <linux/module.h>
+#include <linux/kallsyms.h>
+#include <linux/random.h>
+#include <linux/sched/clock.h>
+#include <linux/kthread.h>
+#include <linux/vmalloc.h>
+
+#include "kallsyms_internal.h"
+#include "kallsyms_selftest.h"
+
+
+#define MAX_NUM_OF_RECORDS		64
+
+struct test_stat {
+	int min;
+	int max;
+	int save_cnt;
+	int real_cnt;
+	int perf;
+	u64 sum;
+	char *name;
+	unsigned long addr;
+	unsigned long addrs[MAX_NUM_OF_RECORDS];
+};
+
+struct test_item {
+	char *name;
+	unsigned long addr;
+};
+
+#define ITEM_FUNC(s)				\
+	{					\
+		.name = #s,			\
+		.addr = (unsigned long)s,	\
+	}
+
+#define ITEM_DATA(s)				\
+	{					\
+		.name = #s,			\
+		.addr = (unsigned long)&s,	\
+	}
+
+
+static int kallsyms_test_var_bss_static;
+static int kallsyms_test_var_data_static = 1;
+int kallsyms_test_var_bss;
+int kallsyms_test_var_data = 1;
+
+static int kallsyms_test_func_static(void)
+{
+	kallsyms_test_var_bss_static++;
+	kallsyms_test_var_data_static++;
+
+	return 0;
+}
+
+int kallsyms_test_func(void)
+{
+	return kallsyms_test_func_static();
+}
+
+__weak int kallsyms_test_func_weak(void)
+{
+	kallsyms_test_var_bss++;
+	kallsyms_test_var_data++;
+	return 0;
+}
+
+static struct test_item test_items[] = {
+	ITEM_FUNC(kallsyms_test_func_static),
+	ITEM_FUNC(kallsyms_test_func),
+	ITEM_FUNC(kallsyms_test_func_weak),
+	ITEM_FUNC(vmalloc),
+	ITEM_FUNC(vfree),
+#ifdef CONFIG_KALLSYMS_ALL
+	ITEM_DATA(kallsyms_test_var_bss_static),
+	ITEM_DATA(kallsyms_test_var_data_static),
+	ITEM_DATA(kallsyms_test_var_bss),
+	ITEM_DATA(kallsyms_test_var_data),
+	ITEM_DATA(vmap_area_list),
+#endif
+};
+
+static char stub_name[KSYM_NAME_LEN];
+
+static int stat_symbol_len(void *data, const char *name, struct module *mod, unsigned long addr)
+{
+	*(u32 *)data += strlen(name);
+
+	return 0;
+}
+
+static void test_kallsyms_compression_ratio(void)
+{
+	u32 pos, off, len, num;
+	u32 ratio, total_size, total_len = 0;
+
+	kallsyms_on_each_symbol(stat_symbol_len, &total_len);
+
+	/*
+	 * A symbol name cannot start with a number. This stub name helps us
+	 * traverse the entire symbol table without finding a match. It's used
+	 * for subsequent performance tests, and its length is the average
+	 * length of all symbol names.
+	 */
+	memset(stub_name, '4', sizeof(stub_name));
+	pos = total_len / kallsyms_num_syms;
+	stub_name[pos] = 0;
+
+	pos = 0;
+	num = 0;
+	off = 0;
+	while (pos < kallsyms_num_syms) {
+		len = kallsyms_names[off];
+		num++;
+		off++;
+		pos++;
+		if ((len & 0x80) != 0) {
+			len = (len & 0x7f) | (kallsyms_names[off] << 7);
+			num++;
+			off++;
+		}
+		off += len;
+	}
+
+	/*
+	 * 1. The length fields is not counted
+	 * 2. The memory occupied by array kallsyms_token_table[] and
+	 *    kallsyms_token_index[] needs to be counted.
+	 */
+	total_size = off - num;
+	pos = kallsyms_token_index[0xff];
+	total_size += pos + strlen(&kallsyms_token_table[pos]) + 1;
+	total_size += 0x100 * sizeof(u16);
+
+	pr_info(" ---------------------------------------------------------\n");
+	pr_info("| nr_symbols | compressed size | original size | ratio(%%) |\n");
+	pr_info("|---------------------------------------------------------|\n");
+	ratio = (u32)div_u64(10000ULL * total_size, total_len);
+	pr_info("| %10d |    %10d   |   %10d  |  %2d.%-2d   |\n",
+		kallsyms_num_syms, total_size, total_len, ratio / 100, ratio % 100);
+	pr_info(" ---------------------------------------------------------\n");
+}
+
+static int lookup_name(void *data, const char *name, struct module *mod, unsigned long addr)
+{
+	u64 t0, t1, t;
+	struct test_stat *stat = (struct test_stat *)data;
+
+	t0 = ktime_get_ns();
+	(void)kallsyms_lookup_name(name);
+	t1 = ktime_get_ns();
+
+	t = t1 - t0;
+	if (t < stat->min)
+		stat->min = t;
+
+	if (t > stat->max)
+		stat->max = t;
+
+	stat->real_cnt++;
+	stat->sum += t;
+
+	return 0;
+}
+
+static void test_perf_kallsyms_lookup_name(void)
+{
+	struct test_stat stat;
+
+	memset(&stat, 0, sizeof(stat));
+	stat.min = INT_MAX;
+	kallsyms_on_each_symbol(lookup_name, &stat);
+	pr_info("kallsyms_lookup_name() looked up %d symbols\n", stat.real_cnt);
+	pr_info("The time spent on each symbol is (ns): min=%d, max=%d, avg=%lld\n",
+		stat.min, stat.max, div_u64(stat.sum, stat.real_cnt));
+}
+
+static bool match_cleanup_name(const char *s, const char *name)
+{
+	char *p;
+	int len;
+
+	if (!IS_ENABLED(CONFIG_LTO_CLANG))
+		return false;
+
+	p = strchr(s, '.');
+	if (!p)
+		return false;
+
+	len = strlen(name);
+	if (p - s != len)
+		return false;
+
+	return !strncmp(s, name, len);
+}
+
+static int find_symbol(void *data, const char *name, struct module *mod, unsigned long addr)
+{
+	struct test_stat *stat = (struct test_stat *)data;
+
+	if (strcmp(name, stat->name) == 0 ||
+	    (!stat->perf && match_cleanup_name(name, stat->name))) {
+		stat->real_cnt++;
+		stat->addr = addr;
+
+		if (stat->save_cnt < MAX_NUM_OF_RECORDS) {
+			stat->addrs[stat->save_cnt] = addr;
+			stat->save_cnt++;
+		}
+
+		if (stat->real_cnt == stat->max)
+			return 1;
+	}
+
+	return 0;
+}
+
+static void test_perf_kallsyms_on_each_symbol(void)
+{
+	u64 t0, t1;
+	struct test_stat stat;
+
+	memset(&stat, 0, sizeof(stat));
+	stat.max = INT_MAX;
+	stat.name = stub_name;
+	stat.perf = 1;
+	t0 = ktime_get_ns();
+	kallsyms_on_each_symbol(find_symbol, &stat);
+	t1 = ktime_get_ns();
+	pr_info("kallsyms_on_each_symbol() traverse all: %lld ns\n", t1 - t0);
+}
+
+static int match_symbol(void *data, unsigned long addr)
+{
+	struct test_stat *stat = (struct test_stat *)data;
+
+	stat->real_cnt++;
+	stat->addr = addr;
+
+	if (stat->save_cnt < MAX_NUM_OF_RECORDS) {
+		stat->addrs[stat->save_cnt] = addr;
+		stat->save_cnt++;
+	}
+
+	if (stat->real_cnt == stat->max)
+		return 1;
+
+	return 0;
+}
+
+static void test_perf_kallsyms_on_each_match_symbol(void)
+{
+	u64 t0, t1;
+	struct test_stat stat;
+
+	memset(&stat, 0, sizeof(stat));
+	stat.max = INT_MAX;
+	stat.name = stub_name;
+	t0 = ktime_get_ns();
+	kallsyms_on_each_match_symbol(match_symbol, stat.name, &stat);
+	t1 = ktime_get_ns();
+	pr_info("kallsyms_on_each_match_symbol() traverse all: %lld ns\n", t1 - t0);
+}
+
+static int test_kallsyms_basic_function(void)
+{
+	int i, j, ret;
+	int next = 0, nr_failed = 0;
+	char *prefix;
+	unsigned short rand;
+	unsigned long addr, lookup_addr;
+	char namebuf[KSYM_NAME_LEN];
+	struct test_stat *stat, *stat2;
+
+	stat = kmalloc(sizeof(*stat) * 2, GFP_KERNEL);
+	if (!stat)
+		return -ENOMEM;
+	stat2 = stat + 1;
+
+	prefix = "kallsyms_lookup_name() for";
+	for (i = 0; i < ARRAY_SIZE(test_items); i++) {
+		addr = kallsyms_lookup_name(test_items[i].name);
+		if (addr != test_items[i].addr) {
+			nr_failed++;
+			pr_info("%s %s failed: addr=%lx, expect %lx\n",
+				prefix, test_items[i].name, addr, test_items[i].addr);
+		}
+	}
+
+	prefix = "kallsyms_on_each_symbol() for";
+	for (i = 0; i < ARRAY_SIZE(test_items); i++) {
+		memset(stat, 0, sizeof(*stat));
+		stat->max = INT_MAX;
+		stat->name = test_items[i].name;
+		kallsyms_on_each_symbol(find_symbol, stat);
+		if (stat->addr != test_items[i].addr || stat->real_cnt != 1) {
+			nr_failed++;
+			pr_info("%s %s failed: count=%d, addr=%lx, expect %lx\n",
+				prefix, test_items[i].name,
+				stat->real_cnt, stat->addr, test_items[i].addr);
+		}
+	}
+
+	prefix = "kallsyms_on_each_match_symbol() for";
+	for (i = 0; i < ARRAY_SIZE(test_items); i++) {
+		memset(stat, 0, sizeof(*stat));
+		stat->max = INT_MAX;
+		stat->name = test_items[i].name;
+		kallsyms_on_each_match_symbol(match_symbol, test_items[i].name, stat);
+		if (stat->addr != test_items[i].addr || stat->real_cnt != 1) {
+			nr_failed++;
+			pr_info("%s %s failed: count=%d, addr=%lx, expect %lx\n",
+				prefix, test_items[i].name,
+				stat->real_cnt, stat->addr, test_items[i].addr);
+		}
+	}
+
+	if (nr_failed) {
+		kfree(stat);
+		return -ESRCH;
+	}
+
+	for (i = 0; i < kallsyms_num_syms; i++) {
+		addr = kallsyms_sym_address(i);
+		if (!is_ksym_addr(addr))
+			continue;
+
+		ret = lookup_symbol_name(addr, namebuf);
+		if (unlikely(ret)) {
+			namebuf[0] = 0;
+			goto failed;
+		}
+
+		/*
+		 * The first '.' may be the initial letter, in which case the
+		 * entire symbol name will be truncated to an empty string in
+		 * cleanup_symbol_name(). Do not test these symbols.
+		 *
+		 * For example:
+		 * cat /proc/kallsyms | awk '{print $3}' | grep -E "^\." | head
+		 * .E_read_words
+		 * .E_leading_bytes
+		 * .E_trailing_bytes
+		 * .E_write_words
+		 * .E_copy
+		 * .str.292.llvm.12122243386960820698
+		 * .str.24.llvm.12122243386960820698
+		 * .str.29.llvm.12122243386960820698
+		 * .str.75.llvm.12122243386960820698
+		 * .str.99.llvm.12122243386960820698
+		 */
+		if (IS_ENABLED(CONFIG_LTO_CLANG) && !namebuf[0])
+			continue;
+
+		lookup_addr = kallsyms_lookup_name(namebuf);
+
+		memset(stat, 0, sizeof(*stat));
+		stat->max = INT_MAX;
+		kallsyms_on_each_match_symbol(match_symbol, namebuf, stat);
+
+		/*
+		 * kallsyms_on_each_symbol() is too slow, randomly select some
+		 * symbols for test.
+		 */
+		if (i >= next) {
+			memset(stat2, 0, sizeof(*stat2));
+			stat2->max = INT_MAX;
+			stat2->name = namebuf;
+			kallsyms_on_each_symbol(find_symbol, stat2);
+
+			/*
+			 * kallsyms_on_each_symbol() and kallsyms_on_each_match_symbol()
+			 * need to get the same traversal result.
+			 */
+			if (stat->addr != stat2->addr ||
+			    stat->real_cnt != stat2->real_cnt ||
+			    memcmp(stat->addrs, stat2->addrs,
+				   stat->save_cnt * sizeof(stat->addrs[0])))
+				goto failed;
+
+			/*
+			 * The average of random increments is 128, that is, one of
+			 * them is tested every 128 symbols.
+			 */
+			get_random_bytes(&rand, sizeof(rand));
+			next = i + (rand & 0xff) + 1;
+		}
+
+		/* Need to be found at least once */
+		if (!stat->real_cnt)
+			goto failed;
+
+		/*
+		 * kallsyms_lookup_name() returns the address of the first
+		 * symbol found and cannot be NULL.
+		 */
+		if (!lookup_addr || lookup_addr != stat->addrs[0])
+			goto failed;
+
+		/*
+		 * If the addresses of all matching symbols are recorded, the
+		 * target address needs to be exist.
+		 */
+		if (stat->real_cnt <= MAX_NUM_OF_RECORDS) {
+			for (j = 0; j < stat->save_cnt; j++) {
+				if (stat->addrs[j] == addr)
+					break;
+			}
+
+			if (j == stat->save_cnt)
+				goto failed;
+		}
+	}
+
+	kfree(stat);
+
+	return 0;
+
+failed:
+	pr_info("Test for %dth symbol failed: (%s) addr=%lx", i, namebuf, addr);
+	kfree(stat);
+	return -ESRCH;
+}
+
+static int test_entry(void *p)
+{
+	int ret;
+
+	do {
+		schedule_timeout(5 * HZ);
+	} while (system_state != SYSTEM_RUNNING);
+
+	pr_info("start\n");
+	ret = test_kallsyms_basic_function();
+	if (ret) {
+		pr_info("abort\n");
+		return 0;
+	}
+
+	test_kallsyms_compression_ratio();
+	test_perf_kallsyms_lookup_name();
+	test_perf_kallsyms_on_each_symbol();
+	test_perf_kallsyms_on_each_match_symbol();
+	pr_info("finish\n");
+
+	return 0;
+}
+
+static int __init kallsyms_test_init(void)
+{
+	struct task_struct *t;
+
+	t = kthread_create(test_entry, NULL, "kallsyms_test");
+	if (IS_ERR(t)) {
+		pr_info("Create kallsyms selftest task failed\n");
+		return PTR_ERR(t);
+	}
+	kthread_bind(t, 0);
+	wake_up_process(t);
+
+	return 0;
+}
+late_initcall(kallsyms_test_init);