diff --git a/linux-user/strace.c b/linux-user/strace.c
index 7d882526da..aee460f24c 100644
--- a/linux-user/strace.c
+++ b/linux-user/strace.c
@@ -1080,11 +1080,16 @@ UNUSED static struct flags mmap_flags[] = {
     FLAG_END,
 };
 
+#ifndef CLONE_PIDFD
+# define CLONE_PIDFD 0x00001000
+#endif
+
 UNUSED static struct flags clone_flags[] = {
     FLAG_GENERIC(CLONE_VM),
     FLAG_GENERIC(CLONE_FS),
     FLAG_GENERIC(CLONE_FILES),
     FLAG_GENERIC(CLONE_SIGHAND),
+    FLAG_GENERIC(CLONE_PIDFD),
     FLAG_GENERIC(CLONE_PTRACE),
     FLAG_GENERIC(CLONE_VFORK),
     FLAG_GENERIC(CLONE_PARENT),
diff --git a/linux-user/syscall.c b/linux-user/syscall.c
index d7c0d4a45d..32caee7d8d 100644
--- a/linux-user/syscall.c
+++ b/linux-user/syscall.c
@@ -210,9 +210,13 @@ struct file_clone_range {
 #define CLONE_IGNORED_FLAGS                     \
     (CLONE_DETACHED | CLONE_IO)
 
+#ifndef CLONE_PIDFD
+# define CLONE_PIDFD 0x00001000
+#endif
+
 /* Flags for fork which we can implement within QEMU itself */
 #define CLONE_OPTIONAL_FORK_FLAGS               \
-    (CLONE_SETTLS | CLONE_PARENT_SETTID |       \
+    (CLONE_SETTLS | CLONE_PARENT_SETTID | CLONE_PIDFD | \
      CLONE_CHILD_CLEARTID | CLONE_CHILD_SETTID)
 
 /* Flags for thread creation which we can implement within QEMU itself */
@@ -6713,6 +6717,17 @@ static int do_fork(CPUArchState *env, unsigned int flags, abi_ulong newsp,
             return -TARGET_EINVAL;
         }
 
+#if !defined(__NR_pidfd_open) || !defined(TARGET_NR_pidfd_open)
+        if (flags & CLONE_PIDFD) {
+            return -TARGET_EINVAL;
+        }
+#endif
+
+        /* Can not allow CLONE_PIDFD with CLONE_PARENT_SETTID */
+        if ((flags & CLONE_PIDFD) && (flags & CLONE_PARENT_SETTID)) {
+            return -TARGET_EINVAL;
+        }
+
         if (block_signals()) {
             return -QEMU_ERESTARTSYS;
         }
@@ -6740,6 +6755,20 @@ static int do_fork(CPUArchState *env, unsigned int flags, abi_ulong newsp,
                 ts->child_tidptr = child_tidptr;
         } else {
             cpu_clone_regs_parent(env, flags);
+            if (flags & CLONE_PIDFD) {
+                int pid_fd = 0;
+#if defined(__NR_pidfd_open) && defined(TARGET_NR_pidfd_open)
+                int pid_child = ret;
+                pid_fd = pidfd_open(pid_child, 0);
+                if (pid_fd >= 0) {
+                        fcntl(pid_fd, F_SETFD, fcntl(pid_fd, F_GETFL)
+                                               | FD_CLOEXEC);
+                } else {
+                        pid_fd = 0;
+                }
+#endif
+                put_user_u32(pid_fd, parent_tidptr);
+                }
             fork_end(0);
         }
     }
@@ -8095,6 +8124,9 @@ static int open_self_stat(CPUArchState *cpu_env, int fd)
             gchar *bin = g_strrstr(ts->bprm->argv[0], "/");
             bin = bin ? bin + 1 : ts->bprm->argv[0];
             g_string_printf(buf, "(%.15s) ", bin);
+        } else if (i == 2) {
+            /* task state */
+            g_string_assign(buf, "R "); /* we are running right now */
         } else if (i == 3) {
             /* ppid */
             g_string_printf(buf, FMT_pid " ", getppid());