xref: /freebsd/tools/test/stress2/misc/syzkaller19.sh (revision d4eeb02986980bf33dd56c41ceb9fc5f180c0d47)
1#!/bin/sh
2
3# panic: sleeping without a lock
4# cpuid = 17
5# time = 1594020733
6# KDB: stack backtrace:
7# db_trace_self_wrapper() at db_trace_self_wrapper+0x2b/frame 0xfffffe013e99d6d0
8# vpanic() at vpanic+0x182/frame 0xfffffe013e99d720
9# panic() at panic+0x43/frame 0xfffffe013e99d780
10# _sleep() at _sleep+0x466/frame 0xfffffe013e99d820
11# soclose() at soclose+0x12a/frame 0xfffffe013e99d890
12# _fdrop() at _fdrop+0x1a/frame 0xfffffe013e99d8b0
13# closef() at closef+0x1db/frame 0xfffffe013e99d940
14# fdescfree_fds() at fdescfree_fds+0x3c/frame 0xfffffe013e99d990
15# fdescfree() at fdescfree+0x36c/frame 0xfffffe013e99da50
16# exit1() at exit1+0x487/frame 0xfffffe013e99dac0
17# sys_sys_exit() at sys_sys_exit+0xd/frame 0xfffffe013e99dad0
18# amd64_syscall() at amd64_syscall+0x159/frame 0xfffffe013e99dbf0
19# fast_syscall_common() at fast_syscall_common+0x101/frame 0xfffffe013e99dbf0
20# --- syscall (1, FreeBSD ELF64, sys_sys_exit), rip = 0x8004513da, rsp = 0x7fffffffe548, rbp = 0x7fffffffe560 ---
21# KDB: enter: panic
22# [ thread pid 86998 tid 100362 ]
23# Stopped at      kdb_enter+0x37: movq    $0,0x10c3a16(%rip)
24# db> x/s version
25# version:FreeBSD 13.0-CURRENT #2 r362887+d0cb7ae7cb9-c248258(mlnx3): Sat
26# Jul  4 10:28:49 CEST 2020 pho@t2.osted.lan:/var/tmp/deviant2/sys/amd64/compile/PHO
27# db>
28
29[ `uname -p` != "amd64" ] && exit 0
30
31. ../default.cfg
32cat > /tmp/syzkaller19.c <<EOF
33// https://syzkaller.appspot.com/bug?id=2196001e8447f2133532abeabaea2ebc0351f67b
34// autogenerated by syzkaller (https://github.com/google/syzkaller)
35// Reported-by: syzbot+e625d92c1dd74e402c81@syzkaller.appspotmail.com
36
37#define _GNU_SOURCE
38
39#include <sys/types.h>
40
41#include <pwd.h>
42#include <signal.h>
43#include <stdarg.h>
44#include <stdbool.h>
45#include <stdint.h>
46#include <stdio.h>
47#include <stdlib.h>
48#include <string.h>
49#include <sys/endian.h>
50#include <sys/syscall.h>
51#include <sys/wait.h>
52#include <time.h>
53#include <unistd.h>
54
55static void kill_and_wait(int pid, int* status)
56{
57  kill(pid, SIGKILL);
58  while (waitpid(-1, status, 0) != pid) {
59  }
60}
61
62static void sleep_ms(uint64_t ms)
63{
64  usleep(ms * 1000);
65}
66
67static uint64_t current_time_ms(void)
68{
69  struct timespec ts;
70  if (clock_gettime(CLOCK_MONOTONIC, &ts))
71    exit(1);
72  return (uint64_t)ts.tv_sec * 1000 + (uint64_t)ts.tv_nsec / 1000000;
73}
74
75static void execute_one(void);
76
77#define WAIT_FLAGS 0
78
79static void loop(void)
80{
81  int iter;
82  for (iter = 0;; iter++) {
83    int pid = fork();
84    if (pid < 0)
85      exit(1);
86    if (pid == 0) {
87      execute_one();
88      exit(0);
89    }
90    int status = 0;
91    uint64_t start = current_time_ms();
92    for (;;) {
93      if (waitpid(-1, &status, WNOHANG | WAIT_FLAGS) == pid)
94        break;
95      sleep_ms(1);
96      if (current_time_ms() - start < 5 * 1000)
97        continue;
98      kill_and_wait(pid, &status);
99      break;
100    }
101  }
102}
103
104uint64_t r[1] = {0xffffffffffffffff};
105
106void execute_one(void)
107{
108  intptr_t res = 0;
109  res = syscall(SYS_socket, 0x1cul, 1ul, 0x84);
110  if (res != -1)
111    r[0] = res;
112  *(uint8_t*)0x20000000 = 0x1c;
113  *(uint8_t*)0x20000001 = 0x1c;
114  *(uint16_t*)0x20000002 = htobe16(0x4e22);
115  *(uint32_t*)0x20000004 = 0;
116  *(uint8_t*)0x20000008 = 0;
117  *(uint8_t*)0x20000009 = 0;
118  *(uint8_t*)0x2000000a = 0;
119  *(uint8_t*)0x2000000b = 0;
120  *(uint8_t*)0x2000000c = 0;
121  *(uint8_t*)0x2000000d = 0;
122  *(uint8_t*)0x2000000e = 0;
123  *(uint8_t*)0x2000000f = 0;
124  *(uint8_t*)0x20000010 = 0;
125  *(uint8_t*)0x20000011 = 0;
126  *(uint8_t*)0x20000012 = 0;
127  *(uint8_t*)0x20000013 = 0;
128  *(uint8_t*)0x20000014 = 0;
129  *(uint8_t*)0x20000015 = 0;
130  *(uint8_t*)0x20000016 = 0;
131  *(uint8_t*)0x20000017 = 0;
132  *(uint32_t*)0x20000018 = 0;
133  syscall(SYS_bind, r[0], 0x20000000ul, 0x1cul);
134  *(uint8_t*)0x20000180 = 0x1c;
135  *(uint8_t*)0x20000181 = 0x1c;
136  *(uint16_t*)0x20000182 = htobe16(0x4e22);
137  *(uint32_t*)0x20000184 = 0;
138  *(uint64_t*)0x20000188 = htobe64(0);
139  *(uint64_t*)0x20000190 = htobe64(1);
140  *(uint32_t*)0x20000198 = 0;
141  syscall(SYS_connect, r[0], 0x20000180ul, 0x1cul);
142  *(uint64_t*)0x20000080 = 0;
143  *(uint32_t*)0x20000088 = 0;
144  *(uint64_t*)0x20000090 = 0;
145  *(uint64_t*)0x20000098 = 0;
146  *(uint64_t*)0x200000a0 = 0;
147  *(uint64_t*)0x200000a8 = 0x60;
148  *(uint32_t*)0x200000b0 = 0;
149  syscall(SYS_sendmsg, r[0], 0x20000080ul, 0x10cul);
150  *(uint32_t*)0x200000c0 = 0xbd;
151  *(uint32_t*)0x200000c4 = 0;
152  syscall(SYS_setsockopt, r[0], 0xffff, 0x80, 0x200000c0ul, 8ul);
153}
154int main(void)
155{
156  syscall(SYS_mmap, 0x20000000ul, 0x1000000ul, 7ul, 0x1012ul, -1, 0ul);
157  loop();
158  return 0;
159}
160EOF
161mycc -o /tmp/syzkaller19 -Wall -Wextra -O2 /tmp/syzkaller19.c -lpthread ||
162    exit 1
163
164(cd ../testcases/swap; ./swap -t 1m -i 20 -h > /dev/null 2>&1) &
165(cd /tmp; ./syzkaller19) &
166sleep 60
167pkill -9 syzkaller19
168while pkill swap; do sleep 1; done
169wait
170
171rm -f /tmp/syzkaller19 /tmp/syzkaller19.c /tmp/syzkaller19.core
172exit 0
173