mirror of
https://github.com/opnsense/src.git
synced 2026-04-22 23:02:02 -04:00
116 lines
3.6 KiB
Bash
Executable file
116 lines
3.6 KiB
Bash
Executable file
#!/bin/sh
|
|
|
|
# https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=227041
|
|
|
|
# panic: [pmc,2749] (ri21, rc1) waiting too long for pmc to be free
|
|
# cpuid = 23
|
|
# time = 1624293771
|
|
# KDB: stack backtrace:
|
|
# db_trace_self_wrapper() at db_trace_self_wrapper+0x2b/frame 0xfffffe01ab083850
|
|
# vpanic() at vpanic+0x181/frame 0xfffffe01ab0838a0
|
|
# panic() at panic+0x43/frame 0xfffffe01ab083900
|
|
# pmc_wait_for_pmc_idle() at pmc_wait_for_pmc_idle+0xa2/frame 0xfffffe01ab083930
|
|
# pmc_release_pmc_descriptor() at pmc_release_pmc_descriptor+0x20b/frame 0xfffffe01ab083980
|
|
# pmc_syscall_handler() at pmc_syscall_handler+0x4bd/frame 0xfffffe01ab083ac0
|
|
# amd64_syscall() at amd64_syscall+0x762/frame 0xfffffe01ab083bf0
|
|
# fast_syscall_common() at fast_syscall_common+0xf8/frame 0xfffffe01ab083bf0
|
|
# --- syscall (0, FreeBSD ELF64, nosys), rip = 0x8009c154a, rsp = 0x7fffffffe4d8, rbp = 0x7fffffffe500 ---
|
|
# KDB: enter: panic
|
|
# [ thread pid 3123 tid 100454 ]
|
|
# Stopped at kdb_enter+0x37: movq $0,0x1285d1e(%rip)
|
|
# db> x/s version
|
|
# version: FreeBSD 14.0-CURRENT #1 ufs-n247476-f77f86ecfea: Mon Jun 21 08:40:40 CEST 2021
|
|
# pho@t2.osted.lan:/var/tmp/deviant3/sys/amd64/compile/PHO
|
|
# db>
|
|
|
|
. ../default.cfg
|
|
cat > /tmp/pmc-crash.c <<EOF
|
|
/*
|
|
Copyright (c) 2018 Dominic Dwyer <dom@itsallbroken.com>
|
|
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 COPYRIGHT HOLDERS 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 COPYRIGHT HOLDER 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.
|
|
|
|
clang -lpmc pmc-crash.c -o pmc-crash
|
|
*/
|
|
|
|
#include <sys/types.h>
|
|
#include <errno.h>
|
|
#include <pmc.h>
|
|
#include <stdio.h>
|
|
#include <stdlib.h>
|
|
#include <string.h>
|
|
#include <unistd.h>
|
|
|
|
int main(void)
|
|
{
|
|
if (pmc_init() != 0)
|
|
{
|
|
printf("pmc_init %s", strerror(errno));
|
|
exit(-1);
|
|
}
|
|
|
|
pmc_id_t pmc_id = 0;
|
|
if (pmc_allocate("inst_retired.any", PMC_MODE_TC, 0, PMC_CPU_ANY,
|
|
&pmc_id, 1024) != 0)
|
|
{
|
|
printf("pmc_allocate %s", strerror(errno));
|
|
exit(-1);
|
|
}
|
|
|
|
printf("attaching to self\n");
|
|
if (pmc_attach(pmc_id, 0) != 0)
|
|
{
|
|
printf("pmc_attach %s", strerror(errno));
|
|
exit(-1);
|
|
}
|
|
|
|
if (pmc_start(pmc_id) != 0)
|
|
{
|
|
printf("pmc_start %s", strerror(errno));
|
|
exit(-1);
|
|
}
|
|
|
|
pmc_value_t v = 0;
|
|
for (int i = 0; i < 100; i++)
|
|
{
|
|
pmc_read(pmc_id, &v);
|
|
}
|
|
pmc_stop(pmc_id);
|
|
|
|
printf("success, detaching...\n");
|
|
pmc_detach(pmc_id, 0);
|
|
pmc_release(pmc_id);
|
|
|
|
printf("ok?");
|
|
}
|
|
EOF
|
|
mycc -o /tmp/pmc-crash -Wall -Wextra -O0 /tmp/pmc-crash.c -lpmc || exit
|
|
kldstat -v | grep -q hwpmc || { kldload hwpmc; loaded=1; }
|
|
here=`pwd`
|
|
cd /tmp
|
|
./pmc-crash; s=$?
|
|
cd $here
|
|
rm -f /tmp/pmc-crash /tmp/pmc-crash.core /tmp/pmc-crash.c
|
|
[ $loaded ] && kldunload hwpmc
|
|
exit $s
|