diff --git a/build/config/BUILDCONFIG.gn b/build/config/BUILDCONFIG.gn
index fcc00ee..0c1b861 100644
--- a/build/config/BUILDCONFIG.gn
+++ b/build/config/BUILDCONFIG.gn

@@ -522,7 +522,6 @@
   "//build/config/compiler:afdo",
   "//build/config/compiler:afdo_optimize_size",
   "//build/config/compiler:compiler",
-  "//build/config/compiler:clang_stackrealign",
   "//build/config/compiler:compiler_arm_fpu",
   "//build/config/compiler:compiler_arm_thumb",
   "//build/config/compiler:chromium_code",

diff --git a/build/config/compiler/BUILD.gn b/build/config/compiler/BUILD.gn
index a703551..71f8f18 100644
--- a/build/config/compiler/BUILD.gn
+++ b/build/config/compiler/BUILD.gn

@@ -1079,20 +1079,6 @@
   asmflags = cflags
 }
 
-# This is separate from :compiler_codegen (and not even a sub-config there)
-# so that some targets can remove it from the list with:
-#   configs -= [ "//build/config/compiler:clang_stackrealign" ]
-# See https://crbug.com/556393 for details of where it must be avoided.
-config("clang_stackrealign") {
-  if (is_clang && current_cpu == "x86" && is_linux) {
-    cflags = [
-      # Align the stack on 16-byte boundaries, http://crbug.com/418554.
-      "-mstack-alignment=16",
-      "-mstackrealign",
-    ]
-  }
-}
-
 config("clang_revision") {
   if (is_clang && clang_base_path == default_clang_base_path) {
     update_args = [

diff --git a/components/crash/content/app/BUILD.gn b/components/crash/content/app/BUILD.gn
index d4fa4c3..ec55236 100644
--- a/components/crash/content/app/BUILD.gn
+++ b/components/crash/content/app/BUILD.gn

@@ -76,11 +76,6 @@
       "//third_party/breakpad:client",
       "//third_party/crashpad/crashpad/snapshot",
     ]
-
-    # Clang's -mstackrealign doesn't work well with
-    # linux_syscall_support.h hand written asm syscalls.
-    # See https://crbug.com/556393
-    configs -= [ "//build/config/compiler:clang_stackrealign" ]
   }
 
   if (is_win) {

diff --git a/third_party/breakpad/BUILD.gn b/third_party/breakpad/BUILD.gn
index 01ea9fc..95b71bc 100644
--- a/third_party/breakpad/BUILD.gn
+++ b/third_party/breakpad/BUILD.gn

@@ -623,11 +623,6 @@
       cflags = [ "-marm" ]
     }
 
-    # Clang's -mstackrealign doesn't work well with
-    # linux_syscall_support.h hand written asm syscalls.
-    # See https://crbug.com/556393
-    configs -= [ "//build/config/compiler:clang_stackrealign" ]
-
     if (is_android) {
       sources += [ "breakpad/src/common/android/breakpad_getcontext.S" ]
     }
@@ -737,11 +732,6 @@
       extra_dist_files = [ "$root_out_dir/linux_dumper_unittest_helper" ]
     }
 
-    # Clang's -mstackrealign doesn't work well with
-    # linux_syscall_support.h hand written asm syscalls.
-    # See https://crbug.com/556393
-    configs -= [ "//build/config/compiler:clang_stackrealign" ]
-
     # Add the breakpad unittest config at the end to override all configs.
     configs += [ ":breakpad_unittest_config" ]
   }