1 files changed, 320 insertions, 0 deletions
diff --git a/tools/test/stress2/misc/syzkaller80.sh b/tools/test/stress2/misc/syzkaller80.sh
new file mode 100755
index 000000000000..31eae210d5b3
--- /dev/null
+++ b/tools/test/stress2/misc/syzkaller80.sh
@@ -0,0 +1,320 @@
+#!/bin/sh
+
+# panic: ../../../kern/uipc_usrreq.c:1256: uipc_sosend_stream_or_seqpacket: Empty stailq 0xfffffe00ffe5fc88->stqh_last is 0xfffffe00ffe5fcd0, not head's first field address
+# cpuid = 5
+# time = 1749593630
+# KDB: stack backtrace:
+# db_trace_self_wrapper() at db_trace_self_wrapper+0x2b/frame 0xfffffe00ffe5fab0
+# vpanic() at vpanic+0x136/frame 0xfffffe00ffe5fbe0
+# panic() at panic+0x43/frame 0xfffffe00ffe5fc40
+# uipc_sosend_stream_or_seqpacket() at uipc_sosend_stream_or_seqpacket+0xa39/frame 0xfffffe00ffe5fd10
+# sousrsend() at sousrsend+0x79/frame 0xfffffe00ffe5fd70
+# dofilewrite() at dofilewrite+0x81/frame 0xfffffe00ffe5fdc0
+# sys_writev() at sys_writev+0x69/frame 0xfffffe00ffe5fe00
+# amd64_syscall() at amd64_syscall+0x169/frame 0xfffffe00ffe5ff30
+# fast_syscall_common() at fast_syscall_common+0xf8/frame 0xfffffe00ffe5ff30
+# --- syscall (0, FreeBSD ELF64, syscall), rip = 0x82330181a, rsp = 0x8238dbf68, rbp = 0x8238dbf90 ---
+# KDB: enter: panic
+# [ thread pid 4484 tid 101524 ]
+# Stopped at      kdb_enter+0x33: movq    $0,0x122ebc2(%rip)
+# db> x/s version
+# version: FreeBSD 15.0-CURRENT #0 main-n277833-948078b65c27-dirty: Tue Jun 10 06:01:36 CEST 2025
+# pho@mercat1.netperf.freebsd.org:/usr/src/sys/amd64/compile/PHO
+# db> 
+
+[ `id -u ` -ne 0 ] && echo "Must be root!" && exit 1
+
+. ../default.cfg
+set -u
+prog=$(basename "$0" .sh)
+cat > /tmp/$prog.c <<EOF
+// https://syzkaller.appspot.com/bug?id=210ae0bfcef6324abfffbfaf10120b767106a990
+// autogenerated by syzkaller (https://github.com/google/syzkaller)
+// syzbot+cfcb8520b0071b548fba@syzkaller.appspotmail.com
+
+#define _GNU_SOURCE
+
+#include <sys/types.h>
+
+#include <errno.h>
+#include <pthread.h>
+#include <pwd.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/syscall.h>
+#include <sys/wait.h>
+#include <time.h>
+#include <unistd.h>
+
+static unsigned long long procid;
+
+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;
+}
+
+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)
+{
+  if (write(1, "executing program\n", sizeof("executing program\n") - 1)) {
+  }
+  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);
+      if (call == 2)
+        break;
+      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 (;;) {
+      sleep_ms(10);
+      if (waitpid(-1, &status, WNOHANG | WAIT_FLAGS) == pid)
+        break;
+      if (current_time_ms() - start < 5000)
+        continue;
+      kill_and_wait(pid, &status);
+      break;
+    }
+  }
+}
+
+uint64_t r[2] = {0xffffffffffffffff, 0xffffffffffffffff};
+
+void execute_call(int call)
+{
+  intptr_t res = 0;
+  switch (call) {
+  case 0:
+    res = syscall(SYS_socketpair, /*domain=*/1ul, /*type=SOCK_STREAM*/ 1ul,
+                  /*proto=*/0, /*fds=*/0x200000000040ul);
+    if (res != -1) {
+      r[0] = *(uint32_t*)0x200000000040;
+      r[1] = *(uint32_t*)0x200000000044;
+    }
+    break;
+  case 1:
+    memcpy((void*)0x200000000100, "\x09\x00\x10\x00", 4);
+    syscall(SYS_setsockopt, /*fd=*/r[1], /*level=*/0, /*optname=*/3,
+            /*optval=*/0x200000000100ul, /*optlen=*/4ul);
+    break;
+  case 2:
+    *(uint64_t*)0x2000000018c0 = 0;
+    *(uint32_t*)0x2000000018c8 = 0;
+    *(uint64_t*)0x2000000018d0 = 0;
+    *(uint64_t*)0x2000000018d8 = 0;
+    *(uint64_t*)0x2000000018e0 = 0x200000001880;
+    memcpy((void*)0x200000001880, "\x10\x00\x00\x00\xff\xff\x00\x00\x06", 9);
+    *(uint64_t*)0x2000000018e8 = 0x10;
+    *(uint32_t*)0x2000000018f0 = 0;
+    syscall(SYS_sendmsg, /*fd=*/r[0], /*msg=*/0x2000000018c0ul, /*f=*/0ul);
+    for (int i = 0; i < 64; i++) {
+      syscall(SYS_sendmsg, /*fd=*/r[0], /*msg=*/0x2000000018c0ul, /*f=*/0ul);
+    }
+    break;
+  case 3:
+    syscall(SYS_writev, /*fd=*/r[0], /*vec=*/0ul, /*vlen=*/0ul);
+    for (int i = 0; i < 64; i++) {
+      syscall(SYS_writev, /*fd=*/r[0], /*vec=*/0ul, /*vlen=*/0ul);
+    }
+    break;
+  case 4:
+    syscall(SYS_setsockopt, /*fd=*/(intptr_t)-1, /*level=*/0, /*optname=*/0xa,
+            /*optval=*/0ul, /*optlen=*/0ul);
+    break;
+  }
+}
+int main(void)
+{
+  syscall(SYS_mmap, /*addr=*/0x200000000000ul, /*len=*/0x1000000ul,
+          /*prot=PROT_WRITE|PROT_READ|PROT_EXEC*/ 7ul,
+          /*flags=MAP_FIXED|MAP_ANONYMOUS|MAP_PRIVATE*/ 0x1012ul,
+          /*fd=*/(intptr_t)-1, /*offset=*/0ul);
+  const char* reason;
+  (void)reason;
+  for (procid = 0; procid < 4; procid++) {
+    if (fork() == 0) {
+      loop();
+    }
+  }
+  sleep(1000000);
+  return 0;
+}
+EOF
+mycc -o /tmp/$prog -Wall -Wextra -O0 /tmp/$prog.c -lpthread || exit 1
+
+work=/tmp/$prog.dir
+rm -rf $work
+mkdir $work
+cd /tmp/$prog.dir
+timeout 3m /tmp/$prog > /dev/null 2>&1
+
+rm -rf /tmp/$prog /tmp/$prog.c /tmp/$prog.core /tmp/$prog.?????? $work
+exit 0