git: bce30c896db6 - main - stress2: Added two syzkaller reproducers
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Date: Sat, 18 Mar 2023 09:32:05 UTC
The branch main has been updated by pho:
URL: https://cgit.FreeBSD.org/src/commit/?id=bce30c896db6ffbc1bf2bbd1507c154818202ae0
commit bce30c896db6ffbc1bf2bbd1507c154818202ae0
Author: Peter Holm <pho@FreeBSD.org>
AuthorDate: 2023-03-18 09:31:31 +0000
Commit: Peter Holm <pho@FreeBSD.org>
CommitDate: 2023-03-18 09:31:31 +0000
stress2: Added two syzkaller reproducers
---
tools/test/stress2/misc/all.exclude | 1 +
tools/test/stress2/misc/syzkaller64.sh | 328 +++++++++++++++++++++++++++++++++
tools/test/stress2/misc/syzkaller65.sh | 82 +++++++++
3 files changed, 411 insertions(+)
diff --git a/tools/test/stress2/misc/all.exclude b/tools/test/stress2/misc/all.exclude
index 8c63a8fc7143..2f4e04473eff 100644
--- a/tools/test/stress2/misc/all.exclude
+++ b/tools/test/stress2/misc/all.exclude
@@ -66,6 +66,7 @@ syzkaller50.sh panic: Assertion done != job_total_nbytes failed at ... 2022040
syzkaller54.sh panic: td 0xfffffe014f7193a0 is not suspended 20220527
syzkaller55.sh panic: Counter goes negative 20220525
syzkaller59.sh Page fault 20220625
+syzkaller65.sh Waiting for fix 20230318
truss3.sh WiP 20200915
unionfs9.sh https://people.freebsd.org/~pho/stress/log/log0404.txt 20230110
diff --git a/tools/test/stress2/misc/syzkaller64.sh b/tools/test/stress2/misc/syzkaller64.sh
new file mode 100755
index 000000000000..c9a88f2184a6
--- /dev/null
+++ b/tools/test/stress2/misc/syzkaller64.sh
@@ -0,0 +1,328 @@
+#!/bin/sh
+
+[ `uname -p` != "amd64" ] && exit 0
+[ `id -u ` -ne 0 ] && echo "Must be root!" && exit 1
+[ "`sysctl -in kern.features.kasan`" != "1" ] && exit 0
+
+. ../default.cfg
+prog=$(basename "$0" .sh)
+cat > /tmp/$prog.c <<EOF
+// https://syzkaller.appspot.com/bug?id=749aa1fdb67018e9c0179373a60d523511bff02c
+// autogenerated by syzkaller (https://github.com/google/syzkaller)
+// Reported-by: syzbot+5cb51285603332d9be11@syzkaller.appspotmail.com
+
+#define _GNU_SOURCE
+
+#include <sys/types.h>
+
+#include <errno.h>
+#include <pthread.h>
+#include <pwd.h>
+#include <setjmp.h>
+#include <signal.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/resource.h>
+#include <sys/syscall.h>
+#include <sys/wait.h>
+#include <time.h>
+#include <unistd.h>
+
+static __thread int clone_ongoing;
+static __thread int skip_segv;
+static __thread jmp_buf segv_env;
+
+static void segv_handler(int sig, siginfo_t* info, void* ctx __unused)
+{
+ if (__atomic_load_n(&clone_ongoing, __ATOMIC_RELAXED) != 0) {
+ exit(sig);
+ }
+ uintptr_t addr = (uintptr_t)info->si_addr;
+ const uintptr_t prog_start = 1 << 20;
+ const uintptr_t prog_end = 100 << 20;
+ int skip = __atomic_load_n(&skip_segv, __ATOMIC_RELAXED) != 0;
+ int valid = addr < prog_start || addr > prog_end;
+ if (sig == SIGBUS)
+ valid = 1;
+ if (skip && valid) {
+ _longjmp(segv_env, 1);
+ }
+ exit(sig);
+}
+
+static void install_segv_handler(void)
+{
+ struct sigaction sa;
+ memset(&sa, 0, sizeof(sa));
+ sa.sa_sigaction = segv_handler;
+ sa.sa_flags = SA_NODEFER | SA_SIGINFO;
+ sigaction(SIGSEGV, &sa, NULL);
+ sigaction(SIGBUS, &sa, NULL);
+}
+
+#define NONFAILING(...) \
+ ({ \
+ int ok = 1; \
+ __atomic_fetch_add(&skip_segv, 1, __ATOMIC_SEQ_CST); \
+ if (_setjmp(segv_env) == 0) { \
+ __VA_ARGS__; \
+ } else \
+ ok = 0; \
+ __atomic_fetch_sub(&skip_segv, 1, __ATOMIC_SEQ_CST); \
+ ok; \
+ })
+
+static void kill_and_wait(int pid, int* status)
+{
+ kill(pid, SIGKILL);
+ while (waitpid(-1, status, 0) != pid) {
+ }
+}
+
+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 = 0;
+ for (; 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;
+}
+
+static void sandbox_common()
+{
+ struct rlimit rlim;
+ rlim.rlim_cur = rlim.rlim_max = 128 << 20;
+ setrlimit(RLIMIT_AS, &rlim);
+ rlim.rlim_cur = rlim.rlim_max = 8 << 20;
+ setrlimit(RLIMIT_MEMLOCK, &rlim);
+ rlim.rlim_cur = rlim.rlim_max = 1 << 20;
+ setrlimit(RLIMIT_FSIZE, &rlim);
+ rlim.rlim_cur = rlim.rlim_max = 1 << 20;
+ setrlimit(RLIMIT_STACK, &rlim);
+ rlim.rlim_cur = rlim.rlim_max = 0;
+ setrlimit(RLIMIT_CORE, &rlim);
+ rlim.rlim_cur = rlim.rlim_max = 256;
+ setrlimit(RLIMIT_NOFILE, &rlim);
+}
+
+static void loop();
+
+static int do_sandbox_none(void)
+{
+ sandbox_common();
+ loop();
+ return 0;
+}
+
+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 execute_one(void)
+{
+ int i, call, thread;
+ for (call = 0; call < 5; 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, 50);
+ break;
+ }
+ }
+ for (i = 0; i < 100 && __atomic_load_n(&running, __ATOMIC_RELAXED); i++)
+ sleep_ms(1);
+}
+
+static void execute_one(void);
+
+#define WAIT_FLAGS 0
+
+static void loop(void)
+{
+ int iter = 0;
+ for (;; iter++) {
+ int pid = fork();
+ if (pid < 0)
+ exit(1);
+ if (pid == 0) {
+ execute_one();
+ exit(0);
+ }
+ int status = 0;
+ uint64_t start = current_time_ms();
+ for (;;) {
+ if (waitpid(-1, &status, WNOHANG | WAIT_FLAGS) == pid)
+ break;
+ sleep_ms(1);
+ if (current_time_ms() - start < 5000)
+ continue;
+ kill_and_wait(pid, &status);
+ break;
+ }
+ }
+}
+
+void execute_call(int call)
+{
+ switch (call) {
+ case 0:
+ syscall(SYS_thr_new, 0ul, 0ul);
+ break;
+ case 1:
+ syscall(SYS_setloginclass, 0ul);
+ break;
+ case 2:
+ syscall(SYS_vfork);
+ break;
+ case 3:
+ NONFAILING(*(uint32_t*)0x20001880 = 4);
+ syscall(SYS_sysarch, 8ul, 0x20001880ul);
+ break;
+ case 4:
+ syscall(SYS_getsid, 0);
+ break;
+ }
+}
+int main(void)
+{
+ syscall(SYS_mmap, 0x20000000ul, 0x1000000ul, 7ul, 0x1012ul, -1, 0ul);
+ install_segv_handler();
+ do_sandbox_none();
+ return 0;
+}
+EOF
+mycc -o /tmp/$prog -Wall -Wextra -O0 /tmp/$prog.c -lpthread || exit 1
+
+(cd /tmp; timeout 2m ./$prog)
+
+rm -rf /tmp/$prog /tmp/$prog.c /tmp/syzkaller.*
+exit 0
diff --git a/tools/test/stress2/misc/syzkaller65.sh b/tools/test/stress2/misc/syzkaller65.sh
new file mode 100755
index 000000000000..8806a55e2733
--- /dev/null
+++ b/tools/test/stress2/misc/syzkaller65.sh
@@ -0,0 +1,82 @@
+#!/bin/sh
+
+# panic: in_pcblookup_hash_locked: invalid local address
+# cpuid = 11
+# time = 1678303805
+# KDB: stack backtrace:
+# db_trace_self_wrapper() at db_trace_self_wrapper+0x2b/frame 0xfffffe0657e466d0
+# vpanic() at vpanic+0x152/frame 0xfffffe0657e46720
+# panic() at panic+0x43/frame 0xfffffe0657e46780
+# in_pcblookup_hash_locked() at in_pcblookup_hash_locked+0x4e2/frame 0xfffffe0657e467f0
+# in_pcb_lport_dest() at in_pcb_lport_dest+0x28a/frame 0xfffffe0657e468a0
+# in_pcbconnect_setup() at in_pcbconnect_setup+0x31b/frame 0xfffffe0657e46940
+# udp_send() at udp_send+0x68b/frame 0xfffffe0657e46a50
+# udp6_send() at udp6_send+0x287/frame 0xfffffe0657e46c10
+# sosend_dgram() at sosend_dgram+0x327/frame 0xfffffe0657e46c70
+# sousrsend() at sousrsend+0x7e/frame 0xfffffe0657e46cd0
+# kern_sendit() at kern_sendit+0x1bc/frame 0xfffffe0657e46d60
+# sendit() at sendit+0xba/frame 0xfffffe0657e46db0
+# sys_sendto() at sys_sendto+0x4d/frame 0xfffffe0657e46e00
+# amd64_syscall() at amd64_syscall+0x15a/frame 0xfffffe0657e46f30
+# fast_syscall_common() at fast_syscall_common+0xf8/frame 0xfffffe0657e46f30
+# --- syscall (0, FreeBSD ELF64, syscall), rip = 0x822a3a31a, rsp = 0x8208224d8, rbp = 0x820822500 ---
+# KDB: enter: panic
+# [ thread pid 47141 tid 357973 ]
+# Stopped at kdb_enter+0x32: movq $0,0x12906d3(%rip)
+# db> x/s version
+# FreeBSD 14.0-CURRENT #0 main-n261389-109abf744bf76: Wed Mar 8 06:10:24 CET 2023
+# pho@mercat1.netperf.freebsd.org:/usr/src/sys/a
+# db>
+
+[ `uname -p` != "amd64" ] && exit 0
+[ `id -u ` -ne 0 ] && echo "Must be root!" && exit 1
+
+. ../default.cfg
+prog=$(basename "$0" .sh)
+cat > /tmp/$prog.c <<EOF
+// https://syzkaller.appspot.com/bug?id=7cae38958ddfe2c338548b4217587bd6d89b43e2
+// autogenerated by syzkaller (https://github.com/google/syzkaller)
+// Reported-by: syzbot+c8e3dac881bba85bc029@syzkaller.appspotmail.com
+
+#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, 7ul, 0x1012ul, -1, 0ul);
+ intptr_t res = 0;
+ res = syscall(SYS_socket, 0x1cul, 2ul, 0);
+ if (res != -1)
+ r[0] = res;
+ *(uint32_t*)0x200001c0 = 0;
+ syscall(SYS_setsockopt, r[0], 0x29, 0x1b, 0x200001c0ul, 4ul);
+ *(uint8_t*)0x20000000 = 0x1c;
+ *(uint8_t*)0x20000001 = 0x1c;
+ *(uint16_t*)0x20000002 = htobe16(0x4e22);
+ *(uint32_t*)0x20000004 = 0;
+ memset((void*)0x20000008, 0, 10);
+ memset((void*)0x20000012, 255, 2);
+ *(uint32_t*)0x20000014 = htobe32(0);
+ *(uint32_t*)0x20000018 = 0;
+ syscall(SYS_sendto, r[0], 0ul, 0ul, 0ul, 0x20000000ul, 0x1cul);
+ return 0;
+}
+EOF
+mycc -o /tmp/$prog -Wall -Wextra -O0 /tmp/$prog.c -lpthread || exit 1
+
+(cd /tmp; timeout 2m ./$prog)
+
+rm -rf /tmp/$prog /tmp/$prog.c /tmp/syzkaller.*
+exit 0