328 lines
7.7 KiB
Bash
Executable File
328 lines
7.7 KiB
Bash
Executable File
#!/bin/sh
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# panic: Assertion done != job_total_nbytes failed at ../../../kern/sys_socket.c:672
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# cpuid = 6
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# time = 1630912129
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# KDB: stack backtrace:
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# db_trace_self_wrapper() at db_trace_self_wrapper+0x2b/frame 0xfffffe00e4f2fa10
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# vpanic() at vpanic+0x187/frame 0xfffffe00e4f2fa70
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# panic() at panic+0x43/frame 0xfffffe00e4f2fad0
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# soaio_process_sb() at soaio_process_sb+0x79a/frame 0xfffffe00e4f2fb70
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# soaio_kproc_loop() at soaio_kproc_loop+0x96/frame 0xfffffe00e4f2fbb0
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# fork_exit() at fork_exit+0x80/frame 0xfffffe00e4f2fbf0
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# fork_trampoline() at fork_trampoline+0xe/frame 0xfffffe00e4f2fbf0
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# --- trap 0, rip = 0, rsp = 0, rbp = 0 ---
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# KDB: enter: panic
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# [ thread pid 26 tid 100163 ]
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# Stopped at kdb_enter+0x37: movq $0,0x127297e(%rip)
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# db> x/s version
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# version: FreeBSD 14.0-CURRENT #0 main-n249158-1f7a6325fe1b: Sun Sep 5 09:12:58 CEST 2021
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# pho@mercat1.netperf.freebsd.org:/usr/src/sys/amd64/compile/PHO
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# db>
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[ `uname -p` != "amd64" ] && exit 0
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[ `id -u ` -ne 0 ] && echo "Must be root!" && exit 1
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. ../default.cfg
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cat > /tmp/syzkaller43.c <<EOF
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// https://syzkaller.appspot.com/bug?id=0ecbaedb9a54dd1af01c400dabe774e5c6c6fb6c
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// autogenerated by syzkaller (https://github.com/google/syzkaller)
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// Reported-by: syzbot+c7d22dbbb9aef509421d@syzkaller.appspotmail.com
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#define _GNU_SOURCE
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#include <sys/types.h>
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#include <errno.h>
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#include <pthread.h>
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#include <pwd.h>
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#include <signal.h>
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#include <stdarg.h>
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#include <stdbool.h>
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#include <stdint.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include <sys/endian.h>
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#include <sys/syscall.h>
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#include <sys/wait.h>
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#include <time.h>
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#include <unistd.h>
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static void kill_and_wait(int pid, int* status)
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{
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kill(pid, SIGKILL);
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while (waitpid(-1, status, 0) != pid) {
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}
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}
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static void sleep_ms(uint64_t ms)
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{
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usleep(ms * 1000);
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}
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static uint64_t current_time_ms(void)
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{
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struct timespec ts;
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if (clock_gettime(CLOCK_MONOTONIC, &ts))
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exit(1);
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return (uint64_t)ts.tv_sec * 1000 + (uint64_t)ts.tv_nsec / 1000000;
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}
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static void thread_start(void* (*fn)(void*), void* arg)
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{
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pthread_t th;
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pthread_attr_t attr;
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pthread_attr_init(&attr);
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pthread_attr_setstacksize(&attr, 128 << 10);
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int i = 0;
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for (; i < 100; i++) {
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if (pthread_create(&th, &attr, fn, arg) == 0) {
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pthread_attr_destroy(&attr);
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return;
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}
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if (errno == EAGAIN) {
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usleep(50);
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continue;
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}
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break;
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}
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exit(1);
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}
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typedef struct {
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pthread_mutex_t mu;
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pthread_cond_t cv;
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int state;
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} event_t;
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static void event_init(event_t* ev)
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{
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if (pthread_mutex_init(&ev->mu, 0))
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exit(1);
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if (pthread_cond_init(&ev->cv, 0))
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exit(1);
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ev->state = 0;
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}
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static void event_reset(event_t* ev)
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{
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ev->state = 0;
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}
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static void event_set(event_t* ev)
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{
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pthread_mutex_lock(&ev->mu);
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if (ev->state)
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exit(1);
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ev->state = 1;
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pthread_mutex_unlock(&ev->mu);
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pthread_cond_broadcast(&ev->cv);
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}
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static void event_wait(event_t* ev)
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{
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pthread_mutex_lock(&ev->mu);
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while (!ev->state)
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pthread_cond_wait(&ev->cv, &ev->mu);
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pthread_mutex_unlock(&ev->mu);
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}
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static int event_isset(event_t* ev)
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{
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pthread_mutex_lock(&ev->mu);
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int res = ev->state;
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pthread_mutex_unlock(&ev->mu);
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return res;
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}
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static int event_timedwait(event_t* ev, uint64_t timeout)
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{
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uint64_t start = current_time_ms();
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uint64_t now = start;
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pthread_mutex_lock(&ev->mu);
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for (;;) {
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if (ev->state)
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break;
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uint64_t remain = timeout - (now - start);
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struct timespec ts;
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ts.tv_sec = remain / 1000;
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ts.tv_nsec = (remain % 1000) * 1000 * 1000;
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pthread_cond_timedwait(&ev->cv, &ev->mu, &ts);
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now = current_time_ms();
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if (now - start > timeout)
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break;
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}
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int res = ev->state;
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pthread_mutex_unlock(&ev->mu);
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return res;
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}
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struct thread_t {
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int created, call;
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event_t ready, done;
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};
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static struct thread_t threads[16];
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static void execute_call(int call);
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static int running;
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static void* thr(void* arg)
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{
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struct thread_t* th = (struct thread_t*)arg;
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for (;;) {
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event_wait(&th->ready);
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event_reset(&th->ready);
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execute_call(th->call);
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__atomic_fetch_sub(&running, 1, __ATOMIC_RELAXED);
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event_set(&th->done);
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}
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return 0;
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}
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static void execute_one(void)
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{
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int i, call, thread;
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for (call = 0; call < 5; call++) {
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for (thread = 0; thread < (int)(sizeof(threads) / sizeof(threads[0]));
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thread++) {
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struct thread_t* th = &threads[thread];
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if (!th->created) {
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th->created = 1;
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event_init(&th->ready);
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event_init(&th->done);
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event_set(&th->done);
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thread_start(thr, th);
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}
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if (!event_isset(&th->done))
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continue;
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event_reset(&th->done);
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th->call = call;
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__atomic_fetch_add(&running, 1, __ATOMIC_RELAXED);
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event_set(&th->ready);
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event_timedwait(&th->done, 50);
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break;
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}
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}
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for (i = 0; i < 100 && __atomic_load_n(&running, __ATOMIC_RELAXED); i++)
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sleep_ms(1);
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}
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static void execute_one(void);
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#define WAIT_FLAGS 0
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static void loop(void)
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{
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int iter = 0;
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for (;; iter++) {
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int pid = fork();
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if (pid < 0)
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exit(1);
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if (pid == 0) {
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execute_one();
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exit(0);
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}
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int status = 0;
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uint64_t start = current_time_ms();
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for (;;) {
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if (waitpid(-1, &status, WNOHANG | WAIT_FLAGS) == pid)
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break;
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sleep_ms(1);
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if (current_time_ms() - start < 5000) {
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continue;
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}
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kill_and_wait(pid, &status);
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break;
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}
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}
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}
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#ifndef SYS_aio_readv
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#define SYS_aio_readv 579
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#endif
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uint64_t r[1] = {0xffffffffffffffff};
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void execute_call(int call)
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{
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intptr_t res = 0;
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switch (call) {
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case 0:
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res = syscall(SYS_socket, 0x1cul, 5ul, 0x84);
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if (res != -1)
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r[0] = res;
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break;
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case 1:
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*(uint64_t*)0x20000440 = 0;
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*(uint32_t*)0x20000448 = 0;
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*(uint64_t*)0x20000450 = 0;
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*(uint64_t*)0x20000458 = 0;
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*(uint64_t*)0x20000460 = 0;
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*(uint64_t*)0x20000468 = 0;
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*(uint32_t*)0x20000470 = 0;
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syscall(SYS_recvmsg, r[0], 0x20000440ul, 0x40040ul);
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break;
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case 2:
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*(uint32_t*)0x200006c0 = r[0];
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*(uint64_t*)0x200006c8 = 0x800;
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*(uint64_t*)0x200006d0 = 0;
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*(uint64_t*)0x200006d8 = 0;
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*(uint32_t*)0x200006e0 = -1;
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*(uint32_t*)0x200006e4 = 8;
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*(uint64_t*)0x200006e8 = 0xffffffffffff658c;
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*(uint32_t*)0x200006f0 = 4;
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*(uint32_t*)0x200006f4 = 0x1ff;
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*(uint64_t*)0x200006f8 = 0x40;
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*(uint64_t*)0x20000700 = 0;
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*(uint64_t*)0x20000708 = 0;
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*(uint32_t*)0x20000710 = 4;
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*(uint32_t*)0x20000714 = 8;
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*(uint32_t*)0x20000718 = 6;
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*(uint64_t*)0x20000720 = 0;
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*(uint64_t*)0x20000728 = 0;
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syscall(SYS_aio_readv, 0x200006c0ul);
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break;
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case 3:
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*(uint32_t*)0x20000140 = 0;
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*(uint16_t*)0x20000144 = 4;
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*(uint8_t*)0x20000146 = 1;
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syscall(SYS_setsockopt, r[0], 0x84, 0x1e, 0x20000140ul, 8ul);
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break;
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case 4:
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*(uint64_t*)0x20000580 = 0x20000080;
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*(uint8_t*)0x20000080 = 0x1c;
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*(uint8_t*)0x20000081 = 0x1c;
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*(uint16_t*)0x20000082 = htobe16(0x4e22);
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*(uint32_t*)0x20000084 = 0;
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*(uint64_t*)0x20000088 = htobe64(0);
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*(uint64_t*)0x20000090 = htobe64(1);
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*(uint32_t*)0x20000098 = 0;
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*(uint32_t*)0x20000588 = 0x1c;
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*(uint64_t*)0x20000590 = 0x20000400;
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*(uint64_t*)0x20000400 = 0x200000c0;
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memset((void*)0x200000c0, 239, 1);
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*(uint64_t*)0x20000408 = 1;
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*(uint32_t*)0x20000598 = 1;
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*(uint64_t*)0x200005a0 = 0;
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*(uint32_t*)0x200005a8 = 0xd0;
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*(uint32_t*)0x200005ac = 0;
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syscall(SYS_sendmsg, r[0], 0x20000580ul, 0ul);
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break;
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}
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}
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int main(void)
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{
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syscall(SYS_mmap, 0x20000000ul, 0x1000000ul, 7ul, 0x1012ul, -1, 0ul);
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loop();
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return 0;
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}
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EOF
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mycc -o /tmp/syzkaller43 -Wall -Wextra -O0 /tmp/syzkaller43.c -lpthread ||
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exit 1
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(cd /tmp; timeout 3m ./syzkaller43)
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rm -rf /tmp/syzkaller43 syzkaller43.c /tmp/syzkaller.*
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exit 0
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