diff --git a/lib/runtime-core/src/fault.rs b/lib/runtime-core/src/fault.rs
index 119aeae04..24a8b91a8 100644
--- a/lib/runtime-core/src/fault.rs
+++ b/lib/runtime-core/src/fault.rs
@@ -304,8 +304,9 @@ pub struct FaultInfo {
 #[cfg(all(target_os = "linux", target_arch = "x86_64"))]
 pub unsafe fn get_fault_info(siginfo: *const c_void, ucontext: *const c_void) -> FaultInfo {
     use libc::{
-        _libc_xmmreg, ucontext_t, REG_R10, REG_R11, REG_R12, REG_R13, REG_R14, REG_R15, REG_R8,
-        REG_R9, REG_RAX, REG_RBP, REG_RBX, REG_RCX, REG_RDI, REG_RDX, REG_RIP, REG_RSI, REG_RSP,
+        _libc_fpstate, _libc_xmmreg, mcontext_t, ucontext_t, REG_R10, REG_R11, REG_R12, REG_R13,
+        REG_R14, REG_R15, REG_R8, REG_R9, REG_RAX, REG_RBP, REG_RBX, REG_RCX, REG_RDI, REG_RDX,
+        REG_RIP, REG_RSI, REG_RSP,
     };
 
     fn read_xmm(reg: &_libc_xmmreg) -> u64 {
@@ -327,7 +328,16 @@ pub unsafe fn get_fault_info(siginfo: *const c_void, ucontext: *const c_void) ->
 
     let ucontext = ucontext as *const ucontext_t;
     let gregs = &(*ucontext).uc_mcontext.gregs;
-    let fpregs = &*(*ucontext).uc_mcontext.fpregs;
+
+    // WSL bug: (*ucontext).uc_mcontext.fpregs is always null.
+    let fpregs: &_libc_fpstate =
+        &*(((&(*ucontext).uc_mcontext) as *const mcontext_t).offset(1) as *const _libc_fpstate);
+    if !(*ucontext).uc_mcontext.fpregs.is_null() {
+        assert_eq!(
+            (*ucontext).uc_mcontext.fpregs as *const _,
+            fpregs as *const _
+        );
+    }
 
     let mut known_registers: [Option<u64>; 24] = [None; 24];
     known_registers[X64Register::GPR(GPR::R15).to_index().0] = Some(gregs[REG_R15 as usize] as _);