diff --git a/dyninst-11.0.0-aarch64.patch b/dyninst-11.0.0-aarch64.patch
new file mode 100644
index 0000000..2783417
--- /dev/null
+++ b/dyninst-11.0.0-aarch64.patch
@@ -0,0 +1,65 @@
+rhbz1993578
+
+commit 874a73ea4 (HEAD -> master, upstream/master)
+Author: Stan Cox <scox@redhat.com>
+Date:   Mon Nov 1 14:24:07 2021 -0400
+
+    Don't overflow aarch64 float register vector when setting used regs. (#1127)
+    
+    Do not include the subtype when setting a float register as a used register if the registerSlot vector would be exceeded, e.g. for a value like 0x400 (Q_REG/register 0).
+
+--- dyninst-11.0.0/dyninstAPI/src/inst-aarch64.C.orig
++++ dyninst-11.0.0/dyninstAPI/src/inst-aarch64.C
+@@ -551,8 +551,13 @@ bool EmitterAARCH64::clobberAllFuncCall(registerSpace *rs,
+             rs->GPRs()[*itr]->beenUsed = true;
+ 
+         std::set<Register> *fpRegs = callee->ifunc()->usedFPRs();
+-        for(std::set<Register>::iterator itr = fpRegs->begin(); itr != fpRegs->end(); itr++)
+-            rs->FPRs()[*itr]->beenUsed = true;
++        for(std::set<Register>::iterator itr = fpRegs->begin(); itr != fpRegs->end(); itr++) {
++            if (*itr <= rs->FPRs().size())
++              rs->FPRs()[*itr]->beenUsed = true;
++            else
++              // parse_func::calcUsedRegs includes the subtype; we only want the regno
++              rs->FPRs()[*itr & 0xff]->beenUsed = true;
++        }
+     } else {
+         for(int idx = 0; idx < rs->numGPRs(); idx++)
+             rs->GPRs()[idx]->beenUsed = true;
+commit b2c892f55
+Author: Stan Cox <scox@redhat.com>
+Date:   Tue Oct 26 17:43:14 2021 -0400
+
+    Load callee's address when the callee and caller are in the same module (#1056)
+    
+    If the callee and caller are in the same module and pic is not
+    required then the callee's address can be loaded directly without
+    using a relocation.
+
+--- dyninst-11.0.0/dyninstAPI/src/inst-aarch64.C.orig
++++ dyninst-11.0.0/dyninstAPI/src/inst-aarch64.C
+@@ -651,12 +651,14 @@ Register EmitterAARCH64::emitCall(opCode op,
+ 
+     assert(gen.rs());
+ 
+-    //Address of function to call in scratch register
++    // Address of function to call in scratch register
+     Register scratch = gen.rs()->getScratchRegister(gen);
+     assert(scratch != REG_NULL && "cannot get a scratch register");
+     gen.markRegDefined(scratch);
+ 
+-    if (gen.addrSpace()->edit() != NULL) {
++    if (gen.addrSpace()->edit() != NULL
++	&& (gen.func()->obj() != callee->obj()
++	    || gen.addrSpace()->needsPIC())) {
+         // gen.as.edit() checks if we are in rewriter mode
+         Address dest = getInterModuleFuncAddr(callee, gen);
+ 
+@@ -666,7 +668,6 @@ Register EmitterAARCH64::emitCall(opCode op,
+         instruction insn;
+         insn.clear();
+         INSN_SET(insn, 31, 31, 0);
+-        //INSN_SET(insn, 29, 30, disp & 0x3);
+         INSN_SET(insn, 28, 28, 1);
+         INSN_SET(insn, 5, 23, disp >> 2);
+         INSN_SET(insn, 0, 4, scratch);
diff --git a/dyninst.spec b/dyninst.spec
index 74e855f..8ff058b 100644
--- a/dyninst.spec
+++ b/dyninst.spec
@@ -1,7 +1,7 @@
 Summary: An API for Run-time Code Generation
 License: LGPLv2+
 Name: dyninst
-Release: 4%{?dist}
+Release: 5%{?dist}
 URL: http://www.dyninst.org
 Version: 11.0.0
 ExclusiveArch: %{ix86} x86_64 ppc64le aarch64
@@ -14,6 +14,7 @@ Patch2: testsuite-11.0.0-386.patch
 Patch3: dyninst-11.0.0-dwarf.patch
 Patch4: dyninst-11.0.0-rosebc.patch
 Patch5: dyninst-11.0.0-nullbuf.patch
+Patch6: dyninst-11.0.0-aarch64.patch
 
 %global dyninst_base dyninst-%{version}
 %global testsuite_base testsuite-%{version}
@@ -87,6 +88,7 @@ pushd %{dyninst_base}
 %patch3 -p1 -b .dwarf
 %patch4 -p1 -b .rosebc
 %patch5 -p1 -b .nullbuf
+%patch6 -p1 -b .aarch64
 popd
 
 # cotire seems to cause non-deterministic gcc errors
@@ -191,6 +193,9 @@ find %{buildroot}%{_libdir}/dyninst/testsuite/ \
 %attr(644,root,root) %{_libdir}/dyninst/testsuite/*.a
 
 %changelog
+* Mon Nov 01 2021 Stan Cox <scox@redhat.com> - 11.0.0-5
+- Related: rhbz1993578
+
 * Tue Aug 10 2021 Stan Cox <scox@redhat.com> - 11.0.0-4
 - Related: rhbz1991997