Index: lld/ELF/Writer.cpp
===================================================================
--- lld/ELF/Writer.cpp
+++ lld/ELF/Writer.cpp
@@ -1257,6 +1257,15 @@
   if (i == e)
     return e;
 
+  // If the orphan section is going to be placed before the found section,
+  // inherit explicitly specified segments from that section; otherwise, the
+  // orphan section may be placed in the previous segment. This may change the
+  // flags of that segment, for example, adding PF_W to a read-only segment.
+  auto foundSec = dyn_cast<OutputSection>(*i);
+  if (foundSec && sec->sortRank < foundSec->sortRank &&
+      script->hasPhdrsCommands())
+    sec->phdrs = foundSec->phdrs;
+
   // Consider all existing sections with the same proximity.
   int proximity = getRankProximity(sec, *i);
   for (; i != e; ++i) {
Index: lld/test/ELF/linkerscript/orphan-phdrs2.test
===================================================================
--- /dev/null
+++ lld/test/ELF/linkerscript/orphan-phdrs2.test
@@ -0,0 +1,33 @@
+# REQUIRES: x86
+
+# RUN: split-file %s %ts
+# RUN: llvm-mc -filetype=obj -triple=x86_64 %ts/s -o %t.o
+# RUN: ld.lld -pie -o %t -T %ts/t %t.o
+# RUN: llvm-readelf -l %t | FileCheck %s
+
+## Check that an orphan section '.dynamic' is added to the same segment as
+## its closest-rank section '.data', even though it is placed before '.data'.
+## Adding 'dynamic' to the first segment would make the segment writable.
+# CHECK:     LOAD {{.*}} R E
+# CHECK:     LOAD {{.*}} RW
+
+# CHECK:     Segment Sections...
+# CHECK-NOT: 00{{.*}} .dynamic
+# CHECK:     01 .dynamic .data
+
+#--- s
+  .text
+  nop
+
+  .data
+  .quad 0
+
+#--- t
+PHDRS {
+  exec PT_LOAD;
+  rw   PT_LOAD;
+}
+SECTIONS {
+  .text : { *(.text) } : exec
+  .data : { *(.data) } : rw
+}