diff --git a/core/sys/linux/sys.odin b/core/sys/linux/sys.odin
index 5ee07a93d41..05b40c06a5b 100644
--- a/core/sys/linux/sys.odin
+++ b/core/sys/linux/sys.odin
@@ -1443,8 +1443,9 @@ ptrace_traceme :: proc "contextless" (rq: PTrace_Traceme_Type) -> (Errno) {
 }
 
 ptrace_peek :: proc "contextless" (rq: PTrace_Peek_Type, pid: Pid, addr: uintptr) -> (uint, Errno) {
-	ret := syscall(SYS_ptrace, rq, pid, addr)
-	return errno_unwrap(ret, uint)
+	res: uint = ---
+	ret := syscall(SYS_ptrace, rq, pid, addr, &res)
+	return res, Errno(-ret)
 }
 
 ptrace_poke :: proc "contextless" (rq: PTrace_Poke_Type, pid: Pid, addr: uintptr, data: uint) -> (Errno) {
@@ -1493,12 +1494,12 @@ ptrace_setregset :: proc "contextless" (rq: PTrace_Setregset_Type, pid: Pid, not
 }
 
 ptrace_getsiginfo :: proc "contextless" (rq: PTrace_Getsiginfo_Type, pid: Pid, si: ^Sig_Info) -> (Errno) {
-	ret := syscall(SYS_ptrace, rq, pid, si)
+	ret := syscall(SYS_ptrace, rq, pid, si, rawptr(nil))
 	return Errno(-ret)
 }
 
 ptrace_peeksiginfo :: proc "contextless" (rq: PTrace_Peeksiginfo_Type, pid: Pid, si: ^Sig_Info) -> (Errno) {
-	ret := syscall(SYS_ptrace, rq, pid, si)
+	ret := syscall(SYS_ptrace, rq, pid, si, rawptr(nil))
 	return Errno(-ret)
 }
 
@@ -1518,52 +1519,52 @@ ptrace_setoptions :: proc "contextless" (rq: PTrace_Setoptions_Type, pid: Pid, o
 }
 
 ptrace_geteventmsg :: proc "contextless" (rq: PTrace_Geteventmsg_Type, pid: Pid, msg: ^uint) -> (Errno) {
-	ret := syscall(SYS_ptrace, rq, pid, msg)
+	ret := syscall(SYS_ptrace, rq, pid, msg, rawptr(nil))
 	return Errno(-ret)
 }
 
 ptrace_cont :: proc "contextless" (rq: PTrace_Cont_Type, pid: Pid, sig: Signal) -> (Errno) {
-	ret := syscall(SYS_ptrace, rq, pid, sig)
+	ret := syscall(SYS_ptrace, rq, pid, rawptr(nil), sig)
 	return Errno(-ret)
 }
 
 ptrace_singlestep :: proc "contextless" (rq: PTrace_Singlestep_Type, pid: Pid, sig: Signal) -> (Errno) {
-	ret := syscall(SYS_ptrace, rq, pid, sig)
+	ret := syscall(SYS_ptrace, rq, pid, rawptr(nil), sig)
 	return Errno(-ret)
 }
 
 ptrace_syscall :: proc "contextless" (rq: PTrace_Syscall_Type, pid: Pid, sig: Signal) -> (Errno) {
-	ret := syscall(SYS_ptrace, rq, pid, sig)
+	ret := syscall(SYS_ptrace, rq, pid, rawptr(nil), sig)
 	return Errno(-ret)
 }
 
 ptrace_sysemu :: proc "contextless" (rq: PTrace_Sysemu_Type, pid: Pid, sig: Signal) -> (Errno) {
-	ret := syscall(SYS_ptrace, rq, pid, sig)
+	ret := syscall(SYS_ptrace, rq, pid, rawptr(nil), sig)
 	return Errno(-ret)
 }
 
 ptrace_sysemu_singlestep :: proc "contextless" (rq: PTrace_Sysemu_Singlestep_Type, pid: Pid, sig: Signal) -> (Errno) {
-	ret := syscall(SYS_ptrace, rq, pid, sig)
+	ret := syscall(SYS_ptrace, rq, pid, rawptr(nil), sig)
 	return Errno(-ret)
 }
 
 ptrace_listen :: proc "contextless" (rq: PTrace_Listen_Type, pid: Pid) -> (Errno) {
-	ret := syscall(SYS_ptrace, rq, pid)
+	ret := syscall(SYS_ptrace, rq, pid, 0, rawptr(nil))
 	return Errno(-ret)
 }
 
 ptrace_interrupt :: proc "contextless" (rq: PTrace_Interrupt_Type, pid: Pid) -> (Errno) {
-	ret := syscall(SYS_ptrace, rq, pid)
+	ret := syscall(SYS_ptrace, rq, pid, 0, rawptr(nil))
 	return Errno(-ret)
 }
 
 ptrace_attach :: proc "contextless" (rq: PTrace_Attach_Type, pid: Pid) -> (Errno) {
-	ret := syscall(SYS_ptrace, rq, pid)
+	ret := syscall(SYS_ptrace, rq, pid, 0, rawptr(nil))
 	return Errno(-ret)
 }
 
 ptrace_seize :: proc "contextless" (rq: PTrace_Seize_Type, pid: Pid, opt: PTrace_Options) -> (Errno) {
-	ret := syscall(SYS_ptrace, rq, pid, 0, transmute(u32) opt)
+	ret := syscall(SYS_ptrace, rq, pid, 0, transmute(u32) opt, rawptr(nil))
 	return Errno(-ret)
 }
 
diff --git a/tests/core/sys/posix/structs.odin b/tests/core/sys/posix/structs.odin
index 95b6258f4e9..a4e9c8d9024 100644
--- a/tests/core/sys/posix/structs.odin
+++ b/tests/core/sys/posix/structs.odin
@@ -63,7 +63,7 @@ execute_struct_checks :: proc(t: ^testing.T) {
 		waiting: for {
 			status: i32
 			wpid := posix.waitpid(pid, &status, {})
-			if status == posix.EINTR {
+			if wpid == -1 && posix.errno() == .EINTR {
 				continue
 			}
 			if !testing.expectf(t, wpid != -1, "waitpid() failure: %v", posix.strerror()) {