134 lines
3.6 KiB
Bash
Executable File
134 lines
3.6 KiB
Bash
Executable File
#!/bin/sh
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# panic: sleepq_add: td 0xfffffe00dffd8800 to sleep on wchan 0xffffffff81d9bee8 with sleeping prohibited
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# cpuid = 7
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# time = 1599685416
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# KDB: stack backtrace:
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# db_trace_self_wrapper() at db_trace_self_wrapper+0x2b/frame 0xfffffe00e656d5e0
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# vpanic() at vpanic+0x182/frame 0xfffffe00e656d630
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# panic() at panic+0x43/frame 0xfffffe00e656d690
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# sleepq_add() at sleepq_add+0x359/frame 0xfffffe00e656d6e0
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# _sx_xlock_hard() at _sx_xlock_hard+0x405/frame 0xfffffe00e656d780
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# _sx_xlock() at _sx_xlock+0xba/frame 0xfffffe00e656d7c0
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# inp_setmoptions() at inp_setmoptions+0xd5c/frame 0xfffffe00e656d970
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# ip_ctloutput() at ip_ctloutput+0x103/frame 0xfffffe00e656d9c0
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# rip_ctloutput() at rip_ctloutput+0x158/frame 0xfffffe00e656d9f0
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# sosetopt() at sosetopt+0xed/frame 0xfffffe00e656da50
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# kern_setsockopt() at kern_setsockopt+0xa8/frame 0xfffffe00e656dab0
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# sys_setsockopt() at sys_setsockopt+0x24/frame 0xfffffe00e656dad0
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# amd64_syscall() at amd64_syscall+0x159/frame 0xfffffe00e656dbf0
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# fast_syscall_common() at fast_syscall_common+0xf8/frame 0xfffffe00e656dbf0
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# --- syscall (0, FreeBSD ELF64, nosys), rip = 0x80042819a, rsp = 0x7fffffffe958, rbp = 0x7fffffffe970 ---
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# KDB: enter: panic
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# [ thread pid 27447 tid 100183 ]
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# Stopped at kdb_enter+0x37: movq $0,0x10b7246(%rip)
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# db> x/s version
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# version: FreeBSD 13.0-CURRENT #0 r365508: Wed Sep 9 21:36:20 CEST 2020
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# pho@mercat1.netperf.freebsd.org:/usr/src/sys/amd64/compile/PHO
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# db>
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# Fixed by r366795.
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[ `uname -p` != "amd64" ] && exit 0
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. ../default.cfg
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cat > /tmp/syzkaller24.c <<EOF
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// https://syzkaller.appspot.com/bug?id=0f4996e03d94b16bb9e945ede3c9de343748e6ed
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// autogenerated by syzkaller (https://github.com/google/syzkaller)
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// Reported-by: syzbot+34f419947239a738ed34@syzkaller.appspotmail.com
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#define _GNU_SOURCE
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#include <sys/types.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 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 < 5 * 1000)
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continue;
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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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uint64_t r[1] = {0xffffffffffffffff};
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void execute_one(void)
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{
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intptr_t res = 0;
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res = syscall(SYS_socket, 2ul, 3ul, 1);
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if (res != -1)
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r[0] = res;
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*(uint32_t*)0x20000180 = htobe32(0xe0000002);
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*(uint32_t*)0x20000184 = htobe32(0x7f000001);
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*(uint32_t*)0x20000188 = htobe32(0x7f000001);
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syscall(SYS_setsockopt, r[0], 0, 0x46, 0x20000180ul, 0x4414ae3732a778ful);
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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/syzkaller24 -Wall -Wextra -O0 /tmp/syzkaller24.c ||
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exit 1
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(cd /tmp; timeout 3m ./syzkaller24)
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rm -rf /tmp/syzkaller24 /tmp/syzkaller24.c /tmp/syzkaller.*
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exit 0
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