diff --git a/patches/mlibc/jinx-working-patch.patch b/patches/mlibc/jinx-working-patch.patch
index b9c654b0..89d4ed29 100644
--- a/patches/mlibc/jinx-working-patch.patch
+++ b/patches/mlibc/jinx-working-patch.patch
@@ -1,5 +1,5 @@
 diff --git mlibc-clean/options/ansi/generic/stdio.cpp mlibc-workdir/options/ansi/generic/stdio.cpp
-index a5e177a..91a9db7 100644
+index 070168f..827732a 100644
 --- mlibc-clean/options/ansi/generic/stdio.cpp
 +++ mlibc-workdir/options/ansi/generic/stdio.cpp
 @@ -8,6 +8,7 @@
@@ -10,7 +10,7 @@ index a5e177a..91a9db7 100644
  
  #include <abi-bits/fcntl.h>
  
-@@ -348,6 +349,20 @@ static void store_int(void *dest, unsigned int size, unsigned long long i) {
+@@ -379,6 +380,20 @@ static void store_int(void *dest, unsigned int size, unsigned long long i) {
  	}
  }
  
@@ -31,7 +31,7 @@ index a5e177a..91a9db7 100644
  template<typename H>
  static int do_scanf(H &handler, const char *fmt, __builtin_va_list args) {
  	#define NOMATCH_CHECK(cond) ({ if(cond) return match_count; }) // if cond is true, matching error
-@@ -476,6 +491,141 @@ static int do_scanf(H &handler, const char *fmt, __builtin_va_list args) {
+@@ -521,6 +536,141 @@ static int do_scanf(H &handler, const char *fmt, __builtin_va_list args) {
  		}
  
  		switch (*fmt) {
@@ -174,18 +174,46 @@ index a5e177a..91a9db7 100644
  			case 'u':
  				base = 10;
 diff --git mlibc-clean/options/glibc/generic/execinfo.cpp mlibc-workdir/options/glibc/generic/execinfo.cpp
-index 6b6a9c0..e1a37e2 100644
+index 119574e..f9f1cde 100644
 --- mlibc-clean/options/glibc/generic/execinfo.cpp
 +++ mlibc-workdir/options/glibc/generic/execinfo.cpp
-@@ -2,6 +2,7 @@
+@@ -7,6 +7,7 @@
  
  #include <bits/ensure.h>
  #include <mlibc/debug.hpp>
 +#include <errno.h>
  
- int backtrace(void **, int) {
- 	mlibc::infoLogger() << "mlibc: backtrace() is a stub!" << frg::endlog;
-@@ -9,8 +10,9 @@ int backtrace(void **, int) {
+ namespace {
+ 
+@@ -52,33 +53,15 @@ _Unwind_Reason_Code trace(_Unwind_Context *context, void *arg) {
+ } // namespace
+ 
+ int backtrace(void **buffer, int size) {
+-	if (size <= 0)
+-		return 0;
+-
+-	if (!libgccHandle) {
+-		libgccHandle = dlopen("libgcc_s.so.1", RTLD_LAZY | RTLD_LOCAL);
+-		if (!libgccHandle || libgccHandle.value() == nullptr) {
+-			mlibc::infoLogger() << "Failed to load libgcc_s.so.1: " << (dlerror() ? dlerror() : "") << frg::endlog;
+-			return 0;
+-		}
+-
+-		unwindBacktrace = reinterpret_cast<UnwindBacktrace>(dlsym(libgccHandle.value(), "_Unwind_Backtrace"));
+-		unwindGetIP = reinterpret_cast<UnwindGetIP>(dlsym(libgccHandle.value(), "_Unwind_GetIP"));
+-
+-		if (!unwindBacktrace || !unwindGetIP) {
+-			mlibc::infoLogger() << "Failed to find unwind functions in libgcc_s.so.1: " << dlerror() << frg::endlog;
+-			return 0;
+-		}
+-	}
+-
+-	UnwindState state{buffer, size};
+-	unwindBacktrace(trace, &state);
+-	return state.current_frame;
++	mlibc::infoLogger() << "mlibc: backtrace() is a stub!" << frg::endlog;
++	errno = ENOSYS;
++	return -1;
  }
  
  char **backtrace_symbols(void *const *, int) {
@@ -196,4 +224,4 @@ index 6b6a9c0..e1a37e2 100644
 +	return NULL;
  }
  
- void backtrace_symbols_fd(void *const *, int, int) {
+ void backtrace_symbols_fd(void *const *buffer, int size, int fd) {