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📄 Make.tags.inc(2.13 KB)
📄 Makefile(302 B)
📄 bus_if.m(26.31 KB)
📄 capabilities.conf(13.67 KB)
📄 clock_if.m(1.7 KB)
📄 cpufreq_if.m(2.27 KB)
📄 device_if.m(10.41 KB)
📄 firmw.S(2.15 KB)
📄 genassym.sh(1.11 KB)
📄 genoffset.c(1.68 KB)
📄 genoffset.sh(3.58 KB)
📄 imgact_aout.c(9.45 KB)
📄 imgact_binmisc.c(18.64 KB)
📄 imgact_elf.c(76.32 KB)
📄 imgact_elf32.c(1.47 KB)
📄 imgact_elf64.c(1.47 KB)
📄 imgact_shell.c(8.41 KB)
📄 init_main.c(24.31 KB)
📄 init_sysent.c(95.3 KB)
📄 kern_acct.c(19.03 KB)
📄 kern_alq.c(24.97 KB)
📄 kern_clock.c(21.12 KB)
📄 kern_clocksource.c(23.34 KB)
📄 kern_condvar.c(11.28 KB)
📄 kern_conf.c(36.14 KB)
📄 kern_cons.c(15.75 KB)
📄 kern_context.c(3.59 KB)
📄 kern_cpu.c(30.77 KB)
📄 kern_cpuset.c(59.78 KB)
📄 kern_ctf.c(8.73 KB)
📄 kern_descrip.c(112.87 KB)
📄 kern_dtrace.c(2.94 KB)
📄 kern_dump.c(8.51 KB)
📄 kern_environment.c(22.75 KB)
📄 kern_et.c(7.1 KB)
📄 kern_event.c(62.49 KB)
📄 kern_exec.c(46.67 KB)
📄 kern_exit.c(34.61 KB)
📄 kern_fail.c(29.32 KB)
📄 kern_ffclock.c(12.66 KB)
📄 kern_fork.c(28.29 KB)
📄 kern_hhook.c(13.58 KB)
📄 kern_idle.c(2.74 KB)
📄 kern_intr.c(40.44 KB)
📄 kern_jail.c(112.67 KB)
📄 kern_kcov.c(15.32 KB)
📄 kern_khelp.c(9.45 KB)
📄 kern_kthread.c(11.8 KB)
📄 kern_ktr.c(11.93 KB)
📄 kern_ktrace.c(31.41 KB)
📄 kern_linker.c(54.3 KB)
📄 kern_lock.c(46.99 KB)
📄 kern_lockf.c(64.46 KB)
📄 kern_lockstat.c(3.8 KB)
📄 kern_loginclass.c(6.69 KB)
📄 kern_malloc.c(37.09 KB)
📄 kern_mbuf.c(43.16 KB)
📄 kern_mib.c(24.26 KB)
📄 kern_module.c(11.05 KB)
📄 kern_mtxpool.c(5.82 KB)
📄 kern_mutex.c(33.62 KB)
📄 kern_ntptime.c(32.49 KB)
📄 kern_osd.c(12.37 KB)
📄 kern_physio.c(5.74 KB)
📄 kern_pmc.c(8.89 KB)
📄 kern_poll.c(15.86 KB)
📄 kern_priv.c(9.14 KB)
📄 kern_proc.c(80.01 KB)
📄 kern_procctl.c(19.48 KB)
📄 kern_prot.c(57.94 KB)
📄 kern_racct.c(34.01 KB)
📄 kern_rangelock.c(8.67 KB)
📄 kern_rctl.c(53.87 KB)
📄 kern_resource.c(36.66 KB)
📄 kern_rmlock.c(28.27 KB)
📄 kern_rwlock.c(40.72 KB)
📄 kern_sdt.c(2.05 KB)
📄 kern_sema.c(4.85 KB)
📄 kern_sendfile.c(33.97 KB)
📄 kern_sharedpage.c(10.37 KB)
📄 kern_shutdown.c(43.34 KB)
📄 kern_sig.c(101.89 KB)
📄 kern_switch.c(13.85 KB)
📄 kern_sx.c(40.27 KB)
📄 kern_synch.c(18.17 KB)
📄 kern_syscalls.c(6.74 KB)
📄 kern_sysctl.c(67.24 KB)
📄 kern_tc.c(55.73 KB)
📄 kern_thr.c(14.14 KB)
📄 kern_thread.c(41.75 KB)
📄 kern_time.c(40.89 KB)
📄 kern_timeout.c(43.08 KB)
📄 kern_tslog.c(3.44 KB)
📄 kern_ubsan.c(50.74 KB)
📄 kern_umtx.c(107.14 KB)
📄 kern_uuid.c(11.68 KB)
📄 kern_xxx.c(10.44 KB)
📄 ksched.c(6.56 KB)
📄 link_elf.c(47.99 KB)
📄 link_elf_obj.c(44.41 KB)
📄 linker_if.m(3.96 KB)
📄 makesyscalls.sh(23.57 KB)
📄 md4c.c(7.89 KB)
📄 md5c.c(9.56 KB)
📄 msi_if.m(2.48 KB)
📄 p1003_1b.c(8.84 KB)
📄 pic_if.m(3.9 KB)
📄 posix4_mib.c(5.59 KB)
📄 sched_4bsd.c(45.03 KB)
📄 sched_ule.c(82.65 KB)
📄 serdev_if.m(3.49 KB)
📄 stack_protector.c(613 B)
📄 subr_acl_nfs4.c(37.42 KB)
📄 subr_acl_posix1e.c(17.71 KB)
📄 subr_atomic64.c(3.97 KB)
📄 subr_autoconf.c(7.7 KB)
📄 subr_blist.c(31.88 KB)
📄 subr_boot.c(5.8 KB)
📄 subr_bufring.c(2.21 KB)
📄 subr_bus.c(145.4 KB)
📄 subr_bus_dma.c(19.67 KB)
📄 subr_busdma_bufalloc.c(5.24 KB)
📄 subr_capability.c(11.93 KB)
📄 subr_clock.c(10.61 KB)
📄 subr_compressor.c(13.11 KB)
📄 subr_counter.c(4.44 KB)
📄 subr_coverage.c(6.17 KB)
📄 subr_csan.c(25.39 KB)
📄 subr_devmap.c(9.8 KB)
📄 subr_devstat.c(16.21 KB)
📄 subr_disk.c(8.54 KB)
📄 subr_dummy_vdso_tc.c(1.7 KB)
📄 subr_early.c(2.26 KB)
📄 subr_epoch.c(25.02 KB)
📄 subr_eventhandler.c(9.17 KB)
📄 subr_fattime.c(9.98 KB)
📄 subr_filter.c(12.2 KB)
📄 subr_firmware.c(13.88 KB)
📄 subr_gtaskqueue.c(20.19 KB)
📄 subr_hash.c(4.8 KB)
📄 subr_hints.c(12.87 KB)
📄 subr_intr.c(40.61 KB)
📄 subr_kdb.c(16.13 KB)
📄 subr_kobj.c(7.1 KB)
📄 subr_lock.c(18.81 KB)
📄 subr_log.c(7.64 KB)
📄 subr_mchain.c(11.06 KB)
📄 subr_module.c(12.98 KB)
📄 subr_msgbuf.c(10.6 KB)
📄 subr_param.c(10.93 KB)
📄 subr_pcpu.c(10.18 KB)
📄 subr_pctrie.c(20.99 KB)
📄 subr_physmem.c(11.52 KB)
📄 subr_pidctrl.c(5.43 KB)
📄 subr_power.c(3.13 KB)
📄 subr_prf.c(27.42 KB)
📄 subr_prng.c(3.36 KB)
📄 subr_prof.c(15.43 KB)
📄 subr_rangeset.c(8.5 KB)
📄 subr_rman.c(27.61 KB)
📄 subr_rtc.c(11.42 KB)
📄 subr_sbuf.c(20.53 KB)
📄 subr_scanf.c(15.59 KB)
📄 subr_sfbuf.c(6.17 KB)
📄 subr_sglist.c(22.83 KB)
📄 subr_sleepqueue.c(39.43 KB)
📄 subr_smp.c(31.62 KB)
📄 subr_smr.c(20.17 KB)
📄 subr_stack.c(6.47 KB)
📄 subr_stats.c(103.01 KB)
📄 subr_syscall.c(7.98 KB)
📄 subr_taskqueue.c(21.1 KB)
📄 subr_terminal.c(15.52 KB)
📄 subr_trap.c(10.87 KB)
📄 subr_turnstile.c(35.58 KB)
📄 subr_uio.c(11.38 KB)
📄 subr_unit.c(22.97 KB)
📄 subr_vmem.c(43.25 KB)
📄 subr_witness.c(84.59 KB)
📄 sys_capability.c(15.06 KB)
📄 sys_eventfd.c(8.42 KB)
📄 sys_generic.c(44.22 KB)
📄 sys_getrandom.c(4.21 KB)
📄 sys_pipe.c(45.14 KB)
📄 sys_procdesc.c(14.57 KB)
📄 sys_process.c(30.73 KB)
📄 sys_socket.c(20.11 KB)
📄 syscalls.c(22.73 KB)
📄 syscalls.master(60.26 KB)
📄 systrace_args.c(178.49 KB)
📄 sysv_ipc.c(6.53 KB)
📄 sysv_msg.c(48.65 KB)
📄 sysv_sem.c(49.85 KB)
📄 sysv_shm.c(43.93 KB)
📄 tty.c(55.14 KB)
📄 tty_compat.c(11.46 KB)
📄 tty_info.c(9.93 KB)
📄 tty_inq.c(12.22 KB)
📄 tty_outq.c(8.74 KB)
📄 tty_pts.c(19.74 KB)
📄 tty_tty.c(2.83 KB)
📄 tty_ttydisc.c(28.6 KB)
📄 uipc_accf.c(8.07 KB)
📄 uipc_debug.c(12.42 KB)
📄 uipc_domain.c(13.13 KB)
📄 uipc_ktls.c(55.7 KB)
📄 uipc_mbuf.c(52.45 KB)
📄 uipc_mbuf2.c(12.64 KB)
📄 uipc_mbufhash.c(4.9 KB)
📄 uipc_mqueue.c(64.64 KB)
📄 uipc_sem.c(25.18 KB)
📄 uipc_shm.c(50.47 KB)
📄 uipc_sockbuf.c(42.9 KB)
📄 uipc_socket.c(110.61 KB)
📄 uipc_syscalls.c(35.94 KB)
📄 uipc_usrreq.c(75.11 KB)
📄 vfs_acl.c(14.5 KB)
📄 vfs_aio.c(76.32 KB)
📄 vfs_bio.c(145.39 KB)
📄 vfs_cache.c(143.09 KB)
📄 vfs_cluster.c(28.36 KB)
📄 vfs_default.c(33.16 KB)
📄 vfs_export.c(14.55 KB)
📄 vfs_extattr.c(17.91 KB)
📄 vfs_hash.c(6 KB)
📄 vfs_init.c(15.86 KB)
📄 vfs_lookup.c(45.48 KB)
📄 vfs_mount.c(62.58 KB)
📄 vfs_mountroot.c(26.23 KB)
📄 vfs_subr.c(167.52 KB)
📄 vfs_syscalls.c(106.86 KB)
📄 vfs_vnops.c(86.28 KB)
📄 vnode_if.src(13.66 KB)

Editing: subr_stack.c

/*-
 * SPDX-License-Identifier: BSD-2-Clause-FreeBSD
 *
 * Copyright (c) 2005 Antoine Brodin
 * All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 * 1. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer.
 * 2. Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in the
 *    documentation and/or other materials provided with the distribution.
 *
 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
 * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
 * SUCH DAMAGE.
 */

#include "opt_ddb.h"

#include <sys/cdefs.h>
__FBSDID("$FreeBSD$");

#include <sys/param.h>
#include <sys/kernel.h>
#ifdef KTR
#include <sys/ktr.h>
#endif
#include <sys/linker.h>
#include <sys/malloc.h>
#include <sys/sbuf.h>
#include <sys/stack.h>
#include <sys/systm.h>
#include <sys/sysctl.h>

FEATURE(stack, "Support for capturing kernel stack");

MALLOC_DEFINE(M_STACK, "stack", "Stack Traces");

static int stack_symbol(vm_offset_t pc, char *namebuf, u_int buflen,
	    long *offset, int flags);
static int stack_symbol_ddb(vm_offset_t pc, const char **name, long *offset);

struct stack *
stack_create(int flags)
{
	struct stack *st;

st = malloc(sizeof(*st), M_STACK, flags | M_ZERO);
	return (st);
}

void
stack_destroy(struct stack *st)
{

free(st, M_STACK);
}

int
stack_put(struct stack *st, vm_offset_t pc)
{

if (st->depth < STACK_MAX) {
		st->pcs[st->depth++] = pc;
		return (0);
	} else
		return (-1);
}

void
stack_copy(const struct stack *src, struct stack *dst)
{

*dst = *src;
}

void
stack_zero(struct stack *st)
{

bzero(st, sizeof *st);
}

void
stack_print(const struct stack *st)
{
	char namebuf[64];
	long offset;
	int i;

KASSERT(st->depth <= STACK_MAX, ("bogus stack"));
	for (i = 0; i < st->depth; i++) {
		(void)stack_symbol(st->pcs[i], namebuf, sizeof(namebuf),
		    &offset, M_WAITOK);
		printf("#%d %p at %s+%#lx\n", i, (void *)st->pcs[i],
		    namebuf, offset);
	}
}

void
stack_print_short(const struct stack *st)
{
	char namebuf[64];
	long offset;
	int i;

KASSERT(st->depth <= STACK_MAX, ("bogus stack"));
	for (i = 0; i < st->depth; i++) {
		if (i > 0)
			printf(" ");
		if (stack_symbol(st->pcs[i], namebuf, sizeof(namebuf),
		    &offset, M_WAITOK) == 0)
			printf("%s+%#lx", namebuf, offset);
		else
			printf("%p", (void *)st->pcs[i]);
	}
	printf("\n");
}

void
stack_print_ddb(const struct stack *st)
{
	const char *name;
	long offset;
	int i;

KASSERT(st->depth <= STACK_MAX, ("bogus stack"));
	for (i = 0; i < st->depth; i++) {
		stack_symbol_ddb(st->pcs[i], &name, &offset);
		printf("#%d %p at %s+%#lx\n", i, (void *)st->pcs[i],
		    name, offset);
	}
}

#if defined(DDB) || defined(WITNESS)
void
stack_print_short_ddb(const struct stack *st)
{
	const char *name;
	long offset;
	int i;

KASSERT(st->depth <= STACK_MAX, ("bogus stack"));
	for (i = 0; i < st->depth; i++) {
		if (i > 0)
			printf(" ");
		if (stack_symbol_ddb(st->pcs[i], &name, &offset) == 0)
			printf("%s+%#lx", name, offset);
		else
			printf("%p", (void *)st->pcs[i]);
	}
	printf("\n");
}
#endif

/*
 * Format stack into sbuf from live kernel.
 *
 * flags - M_WAITOK or M_NOWAIT (EWOULDBLOCK).
 */
int
stack_sbuf_print_flags(struct sbuf *sb, const struct stack *st, int flags,
    enum stack_sbuf_fmt format)
{
	char namebuf[64];
	long offset;
	int i, error;

KASSERT(st->depth <= STACK_MAX, ("bogus stack"));
	for (i = 0; i < st->depth; i++) {
		error = stack_symbol(st->pcs[i], namebuf, sizeof(namebuf),
		    &offset, flags);
		if (error == EWOULDBLOCK)
			return (error);
		switch (format) {
		case STACK_SBUF_FMT_LONG:
			sbuf_printf(sb, "#%d %p at %s+%#lx\n", i,
			    (void *)st->pcs[i], namebuf, offset);
			break;
		case STACK_SBUF_FMT_COMPACT:
			sbuf_printf(sb, "%s+%#lx ", namebuf, offset);
			break;
		default:
			__assert_unreachable();
		}
	}
	sbuf_nl_terminate(sb);
	return (0);
}

void
stack_sbuf_print(struct sbuf *sb, const struct stack *st)
{

(void)stack_sbuf_print_flags(sb, st, M_WAITOK, STACK_SBUF_FMT_LONG);
}

#if defined(DDB) || defined(WITNESS)
void
stack_sbuf_print_ddb(struct sbuf *sb, const struct stack *st)
{
	const char *name;
	long offset;
	int i;

KASSERT(st->depth <= STACK_MAX, ("bogus stack"));
	for (i = 0; i < st->depth; i++) {
		(void)stack_symbol_ddb(st->pcs[i], &name, &offset);
		sbuf_printf(sb, "#%d %p at %s+%#lx\n", i, (void *)st->pcs[i],
		    name, offset);
	}
}
#endif

#ifdef KTR
void
stack_ktr(u_int mask, const char *file, int line, const struct stack *st,
    u_int depth)
{
#ifdef DDB
	const char *name;
	long offset;
	int i;
#endif

KASSERT(st->depth <= STACK_MAX, ("bogus stack"));
#ifdef DDB
	if (depth == 0 || st->depth < depth)
		depth = st->depth;
	for (i = 0; i < depth; i++) {
		(void)stack_symbol_ddb(st->pcs[i], &name, &offset);
		ktr_tracepoint(mask, file, line, "#%d %p at %s+%#lx",
		    i, st->pcs[i], (u_long)name, offset, 0, 0);
	}
#endif
}
#endif

/*
 * Two variants of stack symbol lookup -- one that uses the DDB interfaces
 * and bypasses linker locking, and the other that doesn't.
 */
static int
stack_symbol(vm_offset_t pc, char *namebuf, u_int buflen, long *offset,
    int flags)
{
	int error;

error = linker_search_symbol_name_flags((caddr_t)pc, namebuf, buflen,
	    offset, flags);
	if (error == 0 || error == EWOULDBLOCK)
		return (error);

*offset = 0;
	strlcpy(namebuf, "??", buflen);
	return (ENOENT);
}

static int
stack_symbol_ddb(vm_offset_t pc, const char **name, long *offset)
{
	linker_symval_t symval;
	c_linker_sym_t sym;

if (linker_ddb_search_symbol((caddr_t)pc, &sym, offset) != 0)
		goto out;
	if (linker_ddb_symbol_values(sym, &symval) != 0)
		goto out;
	if (symval.name != NULL) {
		*name = symval.name;
		return (0);
	}
 out:
	*offset = 0;
	*name = "??";
	return (ENOENT);
}

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Editing: subr_stack.c

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