diff --git a/memory/build/malloc_decls.h b/memory/build/malloc_decls.h
index 8d001e3005e5..36154065d3fa 100644
--- a/memory/build/malloc_decls.h
+++ b/memory/build/malloc_decls.h
@@ -112,12 +112,6 @@ MALLOC_DECL(jemalloc_thread_local_arena, void, bool)
 
 // Provide information about any allocation enclosing the given address.
 MALLOC_DECL(jemalloc_ptr_info, void, const void*, jemalloc_ptr_info_t*)
-
-// If jemalloc is currently doing something on this thread then this will return
-// true. This is for signal handlers, if jemalloc causes a segfault during free
-// (or realloc etc) then this can tell the signal handler that the crashing
-// address isn't useful for something like PHC.
-MALLOC_DECL(jemalloc_is_working, bool)
 #  endif
 
 #  if MALLOC_FUNCS & MALLOC_FUNCS_ARENA_BASE
diff --git a/memory/build/mozjemalloc.cpp b/memory/build/mozjemalloc.cpp
index 12836718e75c..c780a17c5fd0 100644
--- a/memory/build/mozjemalloc.cpp
+++ b/memory/build/mozjemalloc.cpp
@@ -3651,27 +3651,6 @@ MOZ_NEVER_INLINE jemalloc_ptr_info_t* jemalloc_ptr_info(const void* aPtr) {
 }
 }  // namespace Debug
 
-// Used in crash reporting to query what pointer jemalloc was working on when it
-// crashed.
-static MOZ_THREAD_LOCAL(unsigned) gWorkingCount;
-
-struct MOZ_RAII AutoSetWorking {
-  explicit AutoSetWorking() { gWorkingCount.set(gWorkingCount.get() + 1); }
-
-  AutoSetWorking(const AutoSetWorking&) = delete;
-  AutoSetWorking(AutoSetWorking&&) = delete;
-
-  ~AutoSetWorking() {
-    MOZ_ASSERT(gWorkingCount.get());
-    gWorkingCount.set(gWorkingCount.get() - 1);
-  }
-};
-
-template <>
-inline bool MozJemalloc::jemalloc_is_working() {
-  return !!gWorkingCount.get();
-}
-
 arena_chunk_t* arena_t::DallocSmall(arena_chunk_t* aChunk, void* aPtr,
                                     arena_chunk_map_t* aMapElm) {
   arena_run_t* run;
@@ -3757,8 +3736,6 @@ static inline void arena_dalloc(void* aPtr, size_t aOffset, arena_t* aArena) {
   MOZ_ASSERT(aOffset != 0);
   MOZ_ASSERT(GetChunkOffsetForPtr(aPtr) == aOffset);
 
-  AutoSetWorking auto_working;
-
   auto chunk = (arena_chunk_t*)((uintptr_t)aPtr - aOffset);
   auto arena = chunk->arena;
   MOZ_ASSERT(arena);
@@ -4302,7 +4279,6 @@ static bool malloc_init_hard() {
   if (!thread_arena.init()) {
     return true;
   }
-  MOZ_ASSERT(gWorkingCount.init());
 
   // Get page size and number of CPUs
   const size_t result = GetKernelPageSize();
@@ -4567,7 +4543,6 @@ inline void* BaseAllocator::realloc(void* aPtr, size_t aSize) {
 
   if (aPtr) {
     MOZ_RELEASE_ASSERT(malloc_initialized);
-    AutoSetWorking auto_working;
 
     auto info = AllocInfo::Get(aPtr);
     auto arena = info.Arena();
@@ -4674,7 +4649,6 @@ inline size_t MozJemalloc::malloc_good_size(size_t aSize) {
 
 template <>
 inline size_t MozJemalloc::malloc_usable_size(usable_ptr_t aPtr) {
-  AutoSetWorking auto_working;
   return AllocInfo::GetValidated(aPtr).Size();
 }
 
diff --git a/toolkit/crashreporter/breakpad-client/linux/handler/exception_handler.cc b/toolkit/crashreporter/breakpad-client/linux/handler/exception_handler.cc
index 521f2308252a..b98946ea6778 100644
--- a/toolkit/crashreporter/breakpad-client/linux/handler/exception_handler.cc
+++ b/toolkit/crashreporter/breakpad-client/linux/handler/exception_handler.cc
@@ -102,7 +102,6 @@
 #endif
 
 #ifdef MOZ_PHC
-#include "mozmemory.h"
 #include "replace_malloc_bridge.h"
 #endif
 
@@ -468,19 +467,13 @@ static void GetPHCAddrInfo(siginfo_t* siginfo,
 // Runs on the crashing thread.
 bool ExceptionHandler::HandleSignal(int /*sig*/, siginfo_t* info, void* uc) {
   mozilla::phc::AddrInfo* addr_info = nullptr;
-
 #ifdef MOZ_PHC
-  if (!jemalloc_is_working()) {
-    // If jemalloc crashed then the PHC information is invalid. Only retrive
-    // it when we know its valid.
-    addr_info = &mozilla::phc::gAddrInfo;
-    GetPHCAddrInfo(info, addr_info);
-  }
+  addr_info = &mozilla::phc::gAddrInfo;
+  GetPHCAddrInfo(info, addr_info);
 #endif
 
-  if (filter_ && !filter_(callback_context_)) {
+  if (filter_ && !filter_(callback_context_))
     return false;
-  }
 
   // Allow ourselves to be dumped if the signal is trusted.
   bool signal_trusted = info->si_code > 0;
diff --git a/toolkit/crashreporter/breakpad-client/mac/handler/exception_handler.cc b/toolkit/crashreporter/breakpad-client/mac/handler/exception_handler.cc
index 0d640fe5b1ba..eec6f9b9cc13 100644
--- a/toolkit/crashreporter/breakpad-client/mac/handler/exception_handler.cc
+++ b/toolkit/crashreporter/breakpad-client/mac/handler/exception_handler.cc
@@ -43,7 +43,6 @@
 #include "mozilla/Assertions.h"
 
 #ifdef MOZ_PHC
-#include "mozmemory.h"
 #include "replace_malloc_bridge.h"
 #endif
 
@@ -445,12 +444,8 @@ bool ExceptionHandler::WriteMinidumpWithException(
 
   mozilla::phc::AddrInfo* addr_info = nullptr;
 #ifdef MOZ_PHC
-  if (!jemalloc_is_working()) {
-    // If jemalloc crashed then the PHC information is invalid. Only retrive
-    // it when we know its valid.
-    addr_info = &mozilla::phc::gAddrInfo;
-    GetPHCAddrInfo(exception_type, exception_subcode, addr_info);
-  }
+  addr_info = &mozilla::phc::gAddrInfo;
+  GetPHCAddrInfo(exception_type, exception_subcode, addr_info);
 #endif
 
   if (directCallback_) {
@@ -458,18 +453,17 @@ bool ExceptionHandler::WriteMinidumpWithException(
                         exception_type,
                         exception_code,
                         exception_subcode,
-                        thread_name) &&
-        exit_after_write) {
-      _exit(exception_type);
+                        thread_name) ) {
+      if (exit_after_write)
+        _exit(exception_type);
     }
 #if !TARGET_OS_IPHONE
   } else if (IsOutOfProcess()) {
     if (exception_type && exception_code) {
       // If this is a real exception, give the filter (if any) a chance to
       // decide if this should be sent.
-      if (filter_ && !filter_(callback_context_)) {
+      if (filter_ && !filter_(callback_context_))
         return false;
-      }
       result = crash_generation_client_->RequestDumpForException(
           exception_type,
           exception_code,
@@ -500,9 +494,8 @@ bool ExceptionHandler::WriteMinidumpWithException(
       if (exception_type && exception_code) {
         // If this is a real exception, give the filter (if any) a chance to
         // decide if this should be sent.
-        if (filter_ && !filter_(callback_context_)) {
+        if (filter_ && !filter_(callback_context_))
           return false;
-        }
 
         md.SetExceptionInformation(exception_type, exception_code,
                                    exception_subcode, thread_name);
@@ -518,8 +511,9 @@ bool ExceptionHandler::WriteMinidumpWithException(
       // If the user callback returned true and we're handling an exception
       // (rather than just writing out the file), then we should exit without
       // forwarding the exception to the next handler.
-      if (result && exit_after_write) {
-        _exit(exception_type);
+      if (result) {
+        if (exit_after_write)
+          _exit(exception_type);
       }
     }
   }
diff --git a/toolkit/crashreporter/breakpad-client/windows/handler/exception_handler.cc b/toolkit/crashreporter/breakpad-client/windows/handler/exception_handler.cc
index e6ee779c2ca0..2e6bfe4a994a 100644
--- a/toolkit/crashreporter/breakpad-client/windows/handler/exception_handler.cc
+++ b/toolkit/crashreporter/breakpad-client/windows/handler/exception_handler.cc
@@ -40,7 +40,6 @@
 #include "common/windows/guid_string.h"
 
 #ifdef MOZ_PHC
-#include "mozmemory.h"
 #include "replace_malloc_bridge.h"
 #endif
 
@@ -910,18 +909,12 @@ static void GetPHCAddrInfo(EXCEPTION_POINTERS* exinfo,
 #endif
 
 ExceptionHandler::MinidumpResult ExceptionHandler::WriteMinidumpWithException(
-    DWORD requesting_thread_id,
-    EXCEPTION_POINTERS* exinfo,
-    MDRawAssertionInfo* assertion)
-{
+    DWORD requesting_thread_id, EXCEPTION_POINTERS* exinfo,
+    MDRawAssertionInfo* assertion) {
   mozilla::phc::AddrInfo* addr_info = nullptr;
 #ifdef MOZ_PHC
-  if (!jemalloc_is_working()) {
-    // If jemalloc crashed then the PHC information is invalid. Only retrive
-    // it when we know its valid.
-    addr_info = &mozilla::phc::gAddrInfo;
-    GetPHCAddrInfo(exinfo, addr_info);
-  }
+  addr_info = &mozilla::phc::gAddrInfo;
+  GetPHCAddrInfo(exinfo, addr_info);
 #endif
 
   // Give user code a chance to approve or prevent writing a minidump.  If the