diff --git a/arch/alpha/kernel/syscalls/syscall.tbl b/arch/alpha/kernel/syscalls/syscall.tbl
index 165f268beafc..ddc3c93ad7a7 100644
--- a/arch/alpha/kernel/syscalls/syscall.tbl
+++ b/arch/alpha/kernel/syscalls/syscall.tbl
@@ -467,3 +467,4 @@
 535	common	io_uring_setup			sys_io_uring_setup
 536	common	io_uring_enter			sys_io_uring_enter
 537	common	io_uring_register		sys_io_uring_register
+538	common	pidfd_open			sys_pidfd_open
diff --git a/arch/arm64/include/asm/unistd32.h b/arch/arm64/include/asm/unistd32.h
index 23f1a44acada..350e2049b4a9 100644
--- a/arch/arm64/include/asm/unistd32.h
+++ b/arch/arm64/include/asm/unistd32.h
@@ -874,6 +874,8 @@ __SYSCALL(__NR_io_uring_setup, sys_io_uring_setup)
 __SYSCALL(__NR_io_uring_enter, sys_io_uring_enter)
 #define __NR_io_uring_register 427
 __SYSCALL(__NR_io_uring_register, sys_io_uring_register)
+#define __NR_pidfd_open 428
+__SYSCALL(__NR_pidfd_open, sys_pidfd_open)
 
 /*
  * Please add new compat syscalls above this comment and update
diff --git a/arch/ia64/kernel/syscalls/syscall.tbl b/arch/ia64/kernel/syscalls/syscall.tbl
index 56e3d0b685e1..7115f6dd347a 100644
--- a/arch/ia64/kernel/syscalls/syscall.tbl
+++ b/arch/ia64/kernel/syscalls/syscall.tbl
@@ -348,3 +348,4 @@
 425	common	io_uring_setup			sys_io_uring_setup
 426	common	io_uring_enter			sys_io_uring_enter
 427	common	io_uring_register		sys_io_uring_register
+428	common	pidfd_open			sys_pidfd_open
diff --git a/arch/m68k/kernel/syscalls/syscall.tbl b/arch/m68k/kernel/syscalls/syscall.tbl
index df4ec3ec71d1..44bf12b16ffe 100644
--- a/arch/m68k/kernel/syscalls/syscall.tbl
+++ b/arch/m68k/kernel/syscalls/syscall.tbl
@@ -427,3 +427,4 @@
 425	common	io_uring_setup			sys_io_uring_setup
 426	common	io_uring_enter			sys_io_uring_enter
 427	common	io_uring_register		sys_io_uring_register
+428	common	pidfd_open			sys_pidfd_open
diff --git a/arch/microblaze/kernel/syscalls/syscall.tbl b/arch/microblaze/kernel/syscalls/syscall.tbl
index 4964947732af..0d32e5152dc0 100644
--- a/arch/microblaze/kernel/syscalls/syscall.tbl
+++ b/arch/microblaze/kernel/syscalls/syscall.tbl
@@ -433,3 +433,4 @@
 425	common	io_uring_setup			sys_io_uring_setup
 426	common	io_uring_enter			sys_io_uring_enter
 427	common	io_uring_register		sys_io_uring_register
+428	common	pidfd_open			sys_pidfd_open
diff --git a/arch/mips/kernel/syscalls/syscall_n32.tbl b/arch/mips/kernel/syscalls/syscall_n32.tbl
index 9392dfe33f97..726e107b3c9f 100644
--- a/arch/mips/kernel/syscalls/syscall_n32.tbl
+++ b/arch/mips/kernel/syscalls/syscall_n32.tbl
@@ -366,3 +366,4 @@
 425	n32	io_uring_setup			sys_io_uring_setup
 426	n32	io_uring_enter			sys_io_uring_enter
 427	n32	io_uring_register		sys_io_uring_register
+428	n32	pidfd_open			sys_pidfd_open
diff --git a/arch/parisc/kernel/syscalls/syscall.tbl b/arch/parisc/kernel/syscalls/syscall.tbl
index fe8ca623add8..83b46b568d51 100644
--- a/arch/parisc/kernel/syscalls/syscall.tbl
+++ b/arch/parisc/kernel/syscalls/syscall.tbl
@@ -424,3 +424,4 @@
 425	common	io_uring_setup			sys_io_uring_setup
 426	common	io_uring_enter			sys_io_uring_enter
 427	common	io_uring_register		sys_io_uring_register
+428	common	pidfd_open			sys_pidfd_open
diff --git a/arch/powerpc/kernel/syscalls/syscall.tbl b/arch/powerpc/kernel/syscalls/syscall.tbl
index 00f5a63c8d9a..5294d04d7fa5 100644
--- a/arch/powerpc/kernel/syscalls/syscall.tbl
+++ b/arch/powerpc/kernel/syscalls/syscall.tbl
@@ -509,3 +509,4 @@
 425	common	io_uring_setup			sys_io_uring_setup
 426	common	io_uring_enter			sys_io_uring_enter
 427	common	io_uring_register		sys_io_uring_register
+428	common	pidfd_open			sys_pidfd_open
diff --git a/arch/s390/kernel/syscalls/syscall.tbl b/arch/s390/kernel/syscalls/syscall.tbl
index 061418f787c3..dcdb838adf49 100644
--- a/arch/s390/kernel/syscalls/syscall.tbl
+++ b/arch/s390/kernel/syscalls/syscall.tbl
@@ -430,3 +430,4 @@
 425  common	io_uring_setup		sys_io_uring_setup              sys_io_uring_setup
 426  common	io_uring_enter		sys_io_uring_enter              sys_io_uring_enter
 427  common	io_uring_register	sys_io_uring_register           sys_io_uring_register
+428  common	pidfd_open		sys_pidfd_open			sys_pidfd_open
diff --git a/arch/sh/kernel/syscalls/syscall.tbl b/arch/sh/kernel/syscalls/syscall.tbl
index 480b057556ee..8e66edfbc521 100644
--- a/arch/sh/kernel/syscalls/syscall.tbl
+++ b/arch/sh/kernel/syscalls/syscall.tbl
@@ -430,3 +430,4 @@
 425	common	io_uring_setup			sys_io_uring_setup
 426	common	io_uring_enter			sys_io_uring_enter
 427	common	io_uring_register		sys_io_uring_register
+428	common	pidfd_open			sys_pidfd_open
diff --git a/arch/sparc/kernel/syscalls/syscall.tbl b/arch/sparc/kernel/syscalls/syscall.tbl
index a1dd24307b00..d6f3bc686939 100644
--- a/arch/sparc/kernel/syscalls/syscall.tbl
+++ b/arch/sparc/kernel/syscalls/syscall.tbl
@@ -473,3 +473,4 @@
 425	common	io_uring_setup			sys_io_uring_setup
 426	common	io_uring_enter			sys_io_uring_enter
 427	common	io_uring_register		sys_io_uring_register
+428	common	pidfd_open			sys_pidfd_open
diff --git a/arch/x86/entry/syscalls/syscall_32.tbl b/arch/x86/entry/syscalls/syscall_32.tbl
index 4cd5f982b1e5..1af6b469160a 100644
--- a/arch/x86/entry/syscalls/syscall_32.tbl
+++ b/arch/x86/entry/syscalls/syscall_32.tbl
@@ -438,3 +438,4 @@
 425	i386	io_uring_setup		sys_io_uring_setup		__ia32_sys_io_uring_setup
 426	i386	io_uring_enter		sys_io_uring_enter		__ia32_sys_io_uring_enter
 427	i386	io_uring_register	sys_io_uring_register		__ia32_sys_io_uring_register
+428	i386	pidfd_open		sys_pidfd_open			__ia32_sys_pidfd_open
diff --git a/arch/x86/entry/syscalls/syscall_64.tbl b/arch/x86/entry/syscalls/syscall_64.tbl
index 64ca0d06259a..c18e6ebe3387 100644
--- a/arch/x86/entry/syscalls/syscall_64.tbl
+++ b/arch/x86/entry/syscalls/syscall_64.tbl
@@ -355,6 +355,7 @@
 425	common	io_uring_setup		__x64_sys_io_uring_setup
 426	common	io_uring_enter		__x64_sys_io_uring_enter
 427	common	io_uring_register	__x64_sys_io_uring_register
+428	common	pidfd_open		__x64_sys_pidfd_open
 
 #
 # x32-specific system call numbers start at 512 to avoid cache impact
diff --git a/arch/xtensa/kernel/syscalls/syscall.tbl b/arch/xtensa/kernel/syscalls/syscall.tbl
index 30084eaf8422..21ee795f3003 100644
--- a/arch/xtensa/kernel/syscalls/syscall.tbl
+++ b/arch/xtensa/kernel/syscalls/syscall.tbl
@@ -398,3 +398,4 @@
 425	common	io_uring_setup			sys_io_uring_setup
 426	common	io_uring_enter			sys_io_uring_enter
 427	common	io_uring_register		sys_io_uring_register
+428	common	pidfd_open			sys_pidfd_open
diff --git a/include/linux/pid.h b/include/linux/pid.h
index 3c8ef5a199ca..c938a92eab99 100644
--- a/include/linux/pid.h
+++ b/include/linux/pid.h
@@ -67,6 +67,7 @@ struct pid
 extern struct pid init_struct_pid;
 
 extern const struct file_operations pidfd_fops;
+extern int pidfd_create(struct pid *pid);
 
 static inline struct pid *get_pid(struct pid *pid)
 {
diff --git a/include/linux/syscalls.h b/include/linux/syscalls.h
index e2870fe1be5b..989055e0b501 100644
--- a/include/linux/syscalls.h
+++ b/include/linux/syscalls.h
@@ -929,6 +929,7 @@ asmlinkage long sys_clock_adjtime32(clockid_t which_clock,
 				struct old_timex32 __user *tx);
 asmlinkage long sys_syncfs(int fd);
 asmlinkage long sys_setns(int fd, int nstype);
+asmlinkage long sys_pidfd_open(pid_t pid, unsigned int flags);
 asmlinkage long sys_sendmmsg(int fd, struct mmsghdr __user *msg,
 			     unsigned int vlen, unsigned flags);
 asmlinkage long sys_process_vm_readv(pid_t pid,
diff --git a/include/uapi/asm-generic/unistd.h b/include/uapi/asm-generic/unistd.h
index dee7292e1df6..94a257a93d20 100644
--- a/include/uapi/asm-generic/unistd.h
+++ b/include/uapi/asm-generic/unistd.h
@@ -832,9 +832,11 @@ __SYSCALL(__NR_io_uring_setup, sys_io_uring_setup)
 __SYSCALL(__NR_io_uring_enter, sys_io_uring_enter)
 #define __NR_io_uring_register 427
 __SYSCALL(__NR_io_uring_register, sys_io_uring_register)
+#define __NR_pidfd_open 428
+__SYSCALL(__NR_pidfd_open, sys_pidfd_open)
 
 #undef __NR_syscalls
-#define __NR_syscalls 428
+#define __NR_syscalls 429
 
 /*
  * 32 bit systems traditionally used different
diff --git a/kernel/fork.c b/kernel/fork.c
index 737db1828437..980cc1d2b8d4 100644
--- a/kernel/fork.c
+++ b/kernel/fork.c
@@ -1714,7 +1714,7 @@ const struct file_operations pidfd_fops = {
  * Return: On success, a cloexec pidfd is returned.
  *         On error, a negative errno number will be returned.
  */
-static int pidfd_create(struct pid *pid)
+int pidfd_create(struct pid *pid)
 {
 	int fd;
 
diff --git a/kernel/pid.c b/kernel/pid.c
index 20881598bdfa..237d18d6ecb8 100644
--- a/kernel/pid.c
+++ b/kernel/pid.c
@@ -38,6 +38,7 @@
 #include <linux/syscalls.h>
 #include <linux/proc_ns.h>
 #include <linux/proc_fs.h>
+#include <linux/sched/signal.h>
 #include <linux/sched/task.h>
 #include <linux/idr.h>
 
@@ -451,6 +452,53 @@ struct pid *find_ge_pid(int nr, struct pid_namespace *ns)
 	return idr_get_next(&ns->idr, &nr);
 }
 
+/**
+ * pidfd_open() - Open new pid file descriptor.
+ *
+ * @pid:   pid for which to retrieve a pidfd
+ * @flags: flags to pass
+ *
+ * This creates a new pid file descriptor with the O_CLOEXEC flag set for
+ * the process identified by @pid. Currently, the process identified by
+ * @pid must be a thread-group leader. This restriction currently exists
+ * for all aspects of pidfds including pidfd creation (CLONE_PIDFD cannot
+ * be used with CLONE_THREAD) and pidfd polling (only supports thread group
+ * leaders).
+ *
+ * Return: On success, a cloexec pidfd is returned.
+ *         On error, a negative errno number will be returned.
+ */
+SYSCALL_DEFINE2(pidfd_open, pid_t, pid, unsigned int, flags)
+{
+	int fd, ret;
+	struct pid *p;
+	struct task_struct *tsk;
+
+	if (flags)
+		return -EINVAL;
+
+	if (pid <= 0)
+		return -EINVAL;
+
+	p = find_get_pid(pid);
+	if (!p)
+		return -ESRCH;
+
+	rcu_read_lock();
+	tsk = pid_task(p, PIDTYPE_PID);
+	if (!tsk)
+		ret = -ESRCH;
+	else if (unlikely(!thread_group_leader(tsk)))
+		ret = -EINVAL;
+	else
+		ret = 0;
+	rcu_read_unlock();
+
+	fd = ret ?: pidfd_create(p);
+	put_pid(p);
+	return fd;
+}
+
 void __init pid_idr_init(void)
 {
 	/* Verify no one has done anything silly: */
