Date: Sun, 9 Feb 2020 10:42:01 +0000 (UTC) From: Peter Holm <pho@FreeBSD.org> To: src-committers@freebsd.org, svn-src-user@freebsd.org Subject: svn commit: r357692 - user/pho/stress2/misc Message-ID: <202002091042.019Ag1OD051172@repo.freebsd.org>
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Author: pho Date: Sun Feb 9 10:42:01 2020 New Revision: 357692 URL: https://svnweb.freebsd.org/changeset/base/357692 Log: Added some syzkaller "C reproducer" tests. Added: user/pho/stress2/misc/syzkaller1.sh (contents, props changed) user/pho/stress2/misc/syzkaller2.sh (contents, props changed) user/pho/stress2/misc/syzkaller3.sh (contents, props changed) Added: user/pho/stress2/misc/syzkaller1.sh ============================================================================== --- /dev/null 00:00:00 1970 (empty, because file is newly added) +++ user/pho/stress2/misc/syzkaller1.sh Sun Feb 9 10:42:01 2020 (r357692) @@ -0,0 +1,248 @@ +#!/bin/sh + +# panic: refcount 0xfffff8001dd678e8 wraparound +# cpuid = 4 +# time = 1580840365 +# KDB: stack backtrace: +# db_trace_self_wrapper() at db_trace_self_wrapper+0x2b/frame 0xfffffe00e56517b0 +# vpanic() at vpanic+0x185/frame 0xfffffe00e5651810 +# panic() at panic+0x43/frame 0xfffffe00e5651870 +# _refcount_update_saturated() at _refcount_update_saturated+0x15/frame 0xfffffe00e5651880 +# refcount_release_last() at refcount_release_last+0x7c/frame 0xfffffe00e56518a0 +# closef() at closef+0x1f7/frame 0xfffffe00e5651930 +# fdescfree_fds() at fdescfree_fds+0x3c/frame 0xfffffe00e5651980 +# fdescfree() at fdescfree+0x456/frame 0xfffffe00e5651a40 +# exit1() at exit1+0x4f3/frame 0xfffffe00e5651ab0 +# sys_sys_exit() at sys_sys_exit+0xd/frame 0xfffffe00e5651ac0 +# amd64_syscall() at amd64_syscall+0x2f1/frame 0xfffffe00e5651bf0 +# fast_syscall_common() at fast_syscall_common+0x101/frame 0xfffffe00e5651bf0 +# --- syscall (1, FreeBSD ELF64, sys_sys_exit), rip = 0x8003d53ba, rsp = 0x7fffffffe9f8, rbp = 0x7fffffffea10 --- + +# Fixed by r357554 + +# $FreeBSD$ + +. ../default.cfg +cat > /tmp/syzkaller1.c <<EOF + +// https://syzkaller.appspot.com/bug?id=29c002256f2ce0d521d1ce007c74e456a37495a8 +// autogenerated by syzkaller (https://github.com/google/syzkaller) + +#define _GNU_SOURCE + +#include <errno.h> +#include <pthread.h> +#include <pwd.h> +#include <stdarg.h> +#include <stdbool.h> +#include <stdint.h> +#include <stdio.h> +#include <stdlib.h> +#include <string.h> +#include <sys/endian.h> +#include <sys/syscall.h> +#include <time.h> +#include <unistd.h> + +static void sleep_ms(uint64_t ms) +{ + usleep(ms * 1000); +} + +static uint64_t current_time_ms(void) +{ + struct timespec ts; + if (clock_gettime(CLOCK_MONOTONIC, &ts)) + exit(1); + return (uint64_t)ts.tv_sec * 1000 + (uint64_t)ts.tv_nsec / 1000000; +} + +static void thread_start(void* (*fn)(void*), void* arg) +{ + pthread_t th; + pthread_attr_t attr; + pthread_attr_init(&attr); + pthread_attr_setstacksize(&attr, 128 << 10); + int i; + for (i = 0; i < 100; i++) { + if (pthread_create(&th, &attr, fn, arg) == 0) { + pthread_attr_destroy(&attr); + return; + } + if (errno == EAGAIN) { + usleep(50); + continue; + } + break; + } + exit(1); +} + +typedef struct { + pthread_mutex_t mu; + pthread_cond_t cv; + int state; +} event_t; + +static void event_init(event_t* ev) +{ + if (pthread_mutex_init(&ev->mu, 0)) + exit(1); + if (pthread_cond_init(&ev->cv, 0)) + exit(1); + ev->state = 0; +} + +static void event_reset(event_t* ev) +{ + ev->state = 0; +} + +static void event_set(event_t* ev) +{ + pthread_mutex_lock(&ev->mu); + if (ev->state) + exit(1); + ev->state = 1; + pthread_mutex_unlock(&ev->mu); + pthread_cond_broadcast(&ev->cv); +} + +static void event_wait(event_t* ev) +{ + pthread_mutex_lock(&ev->mu); + while (!ev->state) + pthread_cond_wait(&ev->cv, &ev->mu); + pthread_mutex_unlock(&ev->mu); +} + +static int event_isset(event_t* ev) +{ + pthread_mutex_lock(&ev->mu); + int res = ev->state; + pthread_mutex_unlock(&ev->mu); + return res; +} + +static int event_timedwait(event_t* ev, uint64_t timeout) +{ + uint64_t start = current_time_ms(); + uint64_t now = start; + pthread_mutex_lock(&ev->mu); + for (;;) { + if (ev->state) + break; + uint64_t remain = timeout - (now - start); + struct timespec ts; + ts.tv_sec = remain / 1000; + ts.tv_nsec = (remain % 1000) * 1000 * 1000; + pthread_cond_timedwait(&ev->cv, &ev->mu, &ts); + now = current_time_ms(); + if (now - start > timeout) + break; + } + int res = ev->state; + pthread_mutex_unlock(&ev->mu); + return res; +} + +struct thread_t { + int created, call; + event_t ready, done; +}; + +static struct thread_t threads[16]; +static void execute_call(int call); +static int running; + +static void* thr(void* arg) +{ + struct thread_t* th = (struct thread_t*)arg; + for (;;) { + event_wait(&th->ready); + event_reset(&th->ready); + execute_call(th->call); + __atomic_fetch_sub(&running, 1, __ATOMIC_RELAXED); + event_set(&th->done); + } + return 0; +} + +static void loop(void) +{ + int i, call, thread; + for (call = 0; call < 7; call++) { + for (thread = 0; thread < (int)(sizeof(threads) / sizeof(threads[0])); + thread++) { + struct thread_t* th = &threads[thread]; + if (!th->created) { + th->created = 1; + event_init(&th->ready); + event_init(&th->done); + event_set(&th->done); + thread_start(thr, th); + } + if (!event_isset(&th->done)) + continue; + event_reset(&th->done); + th->call = call; + __atomic_fetch_add(&running, 1, __ATOMIC_RELAXED); + event_set(&th->ready); + event_timedwait(&th->done, 45); + break; + } + } + for (i = 0; i < 100 && __atomic_load_n(&running, __ATOMIC_RELAXED); i++) + sleep_ms(1); +} + +uint64_t r[3] = {0xffffffffffffffff, 0xffffffffffffffff, 0xffffffffffffffff}; + +void execute_call(int call) +{ + intptr_t res; + switch (call) { + case 0: + memcpy((void*)0x20000000, "./file0\000", 8); + res = syscall(SYS_open, 0x20000000ul, 0x40000400000002c2ul, 0ul); + if (res != -1) + r[0] = res; + break; + case 1: + res = syscall(SYS_socket, 0x1cul, 1ul, 0ul); + if (res != -1) + r[1] = res; + break; + case 2: + syscall(SYS_listen, r[1], 0); + break; + case 3: + syscall(SYS_close, r[0]); + break; + case 4: + syscall(SYS_accept, r[1], 0ul, 0ul); + break; + case 5: + res = syscall(SYS_dup2, r[0], r[1]); + if (res != -1) + r[2] = res; + break; + case 6: + syscall(SYS_mmap, 0x20ffd000ul, 0x1000ul, 0ul, 0x10ul, r[2], 0ul); + break; + } +} +int main(void) +{ + syscall(SYS_mmap, 0x20000000ul, 0x1000000ul, 3ul, 0x1012ul, -1, 0ul); + loop(); + return 0; +} +EOF +mycc -o /tmp/syzkaller1 -Wall -Wextra -O2 /tmp/syzkaller1.c -lpthread || + exit 1 + +(cd /tmp; ./syzkaller1) + +rm /tmp/syzkaller1 /tmp/syzkaller1.c +exit 0 Added: user/pho/stress2/misc/syzkaller2.sh ============================================================================== --- /dev/null 00:00:00 1970 (empty, because file is newly added) +++ user/pho/stress2/misc/syzkaller2.sh Sun Feb 9 10:42:01 2020 (r357692) @@ -0,0 +1,91 @@ +#!/bin/sh + +# panic: mutex pcbinfohash not owned at +# /syzkaller/managers/main/kernel/sys/netinet6/in6_pcb.c:717 +# cpuid = 0 +# time = 1573247472 +# KDB: stack backtrace: +# db_trace_self_wrapper() at db_trace_self_wrapper+0x47/frame +# 0xfffffe0022a56260 +# vpanic() at vpanic+0x1c7/frame 0xfffffe0022a562d0 +# panic() at panic+0x43/frame 0xfffffe0022a56330 +# __mtx_assert() at __mtx_assert+0x18b/frame 0xfffffe0022a56370 +# in6_pcblookup_local() at in6_pcblookup_local+0x53/frame 0xfffffe0022a563c0 +# in_pcb_lport() at in_pcb_lport+0x3fd/frame 0xfffffe0022a56450 +# in_pcbbind_setup() at in_pcbbind_setup+0x28b/frame 0xfffffe0022a564f0 +# in_pcbconnect_setup() at in_pcbconnect_setup+0x4aa/frame 0xfffffe0022a565b0 +# udp_send() at udp_send+0xee4/frame 0xfffffe0022a566c0 +# udp6_send() at udp6_send+0x4e8/frame 0xfffffe0022a56870 +# sosend_dgram() at sosend_dgram+0x54f/frame 0xfffffe0022a568e0 +# sosend() at sosend+0xc6/frame 0xfffffe0022a56950 +# kern_sendit() at kern_sendit+0x32d/frame 0xfffffe0022a56a00 +# sendit() at sendit+0x226/frame 0xfffffe0022a56a60 +# sys_sendto() at sys_sendto+0x5c/frame 0xfffffe0022a56ac0 +# amd64_syscall() at amd64_syscall+0x473/frame 0xfffffe0022a56bf0 +# fast_syscall_common() at fast_syscall_common+0x101/frame 0xfffffe0022a56bf0 +# --- syscall (0, FreeBSD ELF64, nosys), rip = 0x41c3aa, rsp = + +# $FreeBSD$ + +. ../default.cfg +cat > /tmp/syzkaller2.c <<EOF +// https://syzkaller.appspot.com/bug?id=062e9fde55f117bec30836a4ef1ef121f51faf23 +// autogenerated by syzkaller (https://github.com/google/syzkaller) + +#define _GNU_SOURCE + +#include <pwd.h> +#include <stdarg.h> +#include <stdbool.h> +#include <stdint.h> +#include <stdio.h> +#include <stdlib.h> +#include <string.h> +#include <sys/endian.h> +#include <sys/syscall.h> +#include <unistd.h> + +uint64_t r[1] = {0xffffffffffffffff}; + +int main(void) +{ + syscall(SYS_mmap, 0x20000000ul, 0x1000000ul, 3ul, 0x1012ul, -1, 0ul); + intptr_t res = 0; + res = syscall(SYS_socket, 0x1cul, 2ul, 0ul); + if (res != -1) + r[0] = res; + *(uint32_t*)0x200001c0 = 0; + syscall(SYS_setsockopt, r[0], 0x29ul, 0x1bul, 0x200001c0ul, 4ul); + *(uint8_t*)0x20000100 = 0x1c; + *(uint8_t*)0x20000101 = 0x1c; + *(uint16_t*)0x20000102 = htobe16(0x4e21); + *(uint32_t*)0x20000104 = 0; + *(uint8_t*)0x20000108 = 0; + *(uint8_t*)0x20000109 = 0; + *(uint8_t*)0x2000010a = 0; + *(uint8_t*)0x2000010b = 0; + *(uint8_t*)0x2000010c = 0; + *(uint8_t*)0x2000010d = 0; + *(uint8_t*)0x2000010e = 0; + *(uint8_t*)0x2000010f = 0; + *(uint8_t*)0x20000110 = 0; + *(uint8_t*)0x20000111 = 0; + *(uint8_t*)0x20000112 = -1; + *(uint8_t*)0x20000113 = -1; + *(uint8_t*)0x20000114 = 0xac; + *(uint8_t*)0x20000115 = 0x14; + *(uint8_t*)0x20000116 = 0; + *(uint8_t*)0x20000117 = 0xaa; + *(uint32_t*)0x20000118 = 0; + syscall(SYS_sendto, r[0], 0ul, 0ul, 0ul, 0x20000100ul, 0x1cul); + return 0; +} +EOF +mycc -o /tmp/syzkaller2 -Wall -Wextra -O2 /tmp/syzkaller2.c || + exit 1 +rm /tmp/syzkaller2.c + +(cd /tmp; ./syzkaller2) + +rm /tmp/syzkaller2 +exit 0 Added: user/pho/stress2/misc/syzkaller3.sh ============================================================================== --- /dev/null 00:00:00 1970 (empty, because file is newly added) +++ user/pho/stress2/misc/syzkaller3.sh Sun Feb 9 10:42:01 2020 (r357692) @@ -0,0 +1,51 @@ +#!/bin/sh + +# panic: mutex process lock not owned at ../../../kern/kern_time.c:261 +# cpuid = 17 +# time = 1580844484 +# KDB: stack backtrace: +# db_trace_self_wrapper() at db_trace_self_wrapper+0x2b/frame 0xfffffe01387b7920 +# vpanic() at vpanic+0x185/frame 0xfffffe01387b7980 +# panic() at panic+0x43/frame 0xfffffe01387b79e0 +# __mtx_assert() at __mtx_assert+0xb0/frame 0xfffffe01387b79f0 +# kern_thread_cputime() at kern_thread_cputime+0x99/frame 0xfffffe01387b7a30 +# kern_clock_gettime() at kern_clock_gettime+0x2a6/frame 0xfffffe01387b7a90 +# sys_clock_gettime() at sys_clock_gettime+0x17/frame 0xfffffe01387b7ac0 +# amd64_syscall() at amd64_syscall+0x2f1/frame 0xfffffe01387b7bf0 +# fast_syscall_common() at fast_syscall_common+0x101/frame 0xfffffe01387b7bf0 +# --- syscall (0, FreeBSD ELF64, nosys), rip = 0x80041b8ca, rsp = 0x7fffffffe9f8, rbp = 0x7fffffffea10 --- + +# $FreeBSD$ + +. ../default.cfg +cat > /tmp/syzkaller3.c <<EOF +// https://syzkaller.appspot.com/bug?id=6245c550ba855e94618dbc1dec0a21e9e89a2ddd +// autogenerated by syzkaller (https://github.com/google/syzkaller) + +#define _GNU_SOURCE + +#include <pwd.h> +#include <stdarg.h> +#include <stdbool.h> +#include <stdint.h> +#include <stdio.h> +#include <stdlib.h> +#include <string.h> +#include <sys/endian.h> +#include <sys/syscall.h> +#include <unistd.h> + +int main(void) +{ + syscall(SYS_mmap, 0x20000000ul, 0x1000000ul, 3ul, 0x1012ul, -1, 0ul); + syscall(SYS_clock_gettime, 0xeul, 0ul); + return 0; +} +EOF +mycc -o /tmp/syzkaller3 -Wall -Wextra -O2 /tmp/syzkaller3.c || + exit 1 + +(cd /tmp; ./syzkaller3) + +rm /tmp/syzkaller3 /tmp/syzkaller3.c +exit 0
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