diff -Nru kpmcore-21.12.2/debian/changelog kpmcore-21.12.2/debian/changelog
--- kpmcore-21.12.2/debian/changelog	2022-02-18 12:24:03.000000000 +0000
+++ kpmcore-21.12.2/debian/changelog	2022-02-25 07:12:28.000000000 +0000
@@ -1,3 +1,10 @@
+kpmcore (21.12.2-3+rpi1) bookworm-staging; urgency=medium
+
+  [changes brought forward from 20.12.2-4+rpi1 by Peter Michael Green <plugwash@raspbian.org> at Tue, 23 Feb 2021 15:11:08 +0000]
+  * Update symbols file for raspbian.
+
+ -- Raspbian forward porter <root@raspbian.org>  Fri, 25 Feb 2022 07:12:28 +0000
+
 kpmcore (21.12.2-3) unstable; urgency=medium
 
   * More symbols fixes for armel and riscv64.
diff -Nru kpmcore-21.12.2/debian/libkpmcore11.symbols kpmcore-21.12.2/debian/libkpmcore11.symbols
--- kpmcore-21.12.2/debian/libkpmcore11.symbols	2022-02-18 12:23:29.000000000 +0000
+++ kpmcore-21.12.2/debian/libkpmcore11.symbols	2022-02-25 07:12:28.000000000 +0000
@@ -1387,9 +1387,9 @@
  _ZTIN2FS8reiserfsE@Base 21.12.1
  _ZTIN2FS9bitlockerE@Base 21.12.1
  _ZTIN2FS9linuxswapE@Base 21.12.1
- (arch=!armel !riscv64)_ZTISt11_Mutex_baseILN9__gnu_cxx12_Lock_policyE2EE@Base 21.12.1
- (arch=!armel !riscv64)_ZTISt16_Sp_counted_baseILN9__gnu_cxx12_Lock_policyE2EE@Base 21.12.1
- (arch=!armel !riscv64)_ZTISt23_Sp_counted_ptr_inplaceI11SmartStatusSaIS0_ELN9__gnu_cxx12_Lock_policyE2EE@Base 21.12.1
+ (optional=notarmelnotriscvandprobabllynotraspbian)_ZTISt11_Mutex_baseILN9__gnu_cxx12_Lock_policyE2EE@Base 20.12.2
+ (optional=notarmelnotriscvandprobabllynotraspbian)_ZTISt16_Sp_counted_baseILN9__gnu_cxx12_Lock_policyE2EE@Base 20.12.2
+ (optional=notarmelnotriscvandprobabllynotraspbian)_ZTISt23_Sp_counted_ptr_inplaceI11SmartStatusSaIS0_ELN9__gnu_cxx12_Lock_policyE2EE@Base 20.12.2
  (arch=armel riscv64)_ZTIN9__gnu_cxx7__mutexE@Base 21.12.2
  (arch=armel riscv64)_ZTISt11_Mutex_baseILN9__gnu_cxx12_Lock_policyE1EE@Base 21.12.2
  (arch=armel riscv64)_ZTISt16_Sp_counted_baseILN9__gnu_cxx12_Lock_policyE1EE@Base 21.12.2
@@ -1465,14 +1465,14 @@
  _ZTSN2FS8reiserfsE@Base 21.12.1
  _ZTSN2FS9bitlockerE@Base 21.12.1
  _ZTSN2FS9linuxswapE@Base 21.12.1
- (arch=!armel !riscv64)_ZTSSt11_Mutex_baseILN9__gnu_cxx12_Lock_policyE2EE@Base 21.12.1
- (arch=!armel !riscv64)_ZTSSt16_Sp_counted_baseILN9__gnu_cxx12_Lock_policyE2EE@Base 21.12.1
+ (optional=notarmelnotriscvandprobabllynotraspbian)_ZTSSt11_Mutex_baseILN9__gnu_cxx12_Lock_policyE2EE@Base 20.12.2
+ (optional=notarmelnotriscvandprobabllynotraspbian)_ZTSSt16_Sp_counted_baseILN9__gnu_cxx12_Lock_policyE2EE@Base 20.12.2
  (arch=armel riscv64)_ZTSN9__gnu_cxx7__mutexE@Base 21.12.2
  (arch=armel riscv64)_ZTSSt11_Mutex_baseILN9__gnu_cxx12_Lock_policyE1EE@Base 21.12.2
  (arch=armel riscv64)_ZTSSt16_Sp_counted_baseILN9__gnu_cxx12_Lock_policyE1EE@Base 21.12.2
  _ZTSSt19_Sp_make_shared_tag@Base 21.12.1
- (arch=!armel !riscv64)_ZTSSt23_Sp_counted_ptr_inplaceI11SmartStatusSaIS0_ELN9__gnu_cxx12_Lock_policyE2EE@Base 21.12.1
  (arch=armel riscv64)_ZTSSt23_Sp_counted_ptr_inplaceI11SmartStatusSaIS0_ELN9__gnu_cxx12_Lock_policyE1EE@Base 21.12.2
+ (optional=notarmelnotriscvandprobabllynotraspbian)_ZTSSt23_Sp_counted_ptr_inplaceI11SmartStatusSaIS0_ELN9__gnu_cxx12_Lock_policyE2EE@Base 20.12.2
  _ZTV10DiskDevice@Base 21.12.1
  _ZTV10FileSystem@Base 21.12.1
  _ZTV10PartWidget@Base 21.12.1
@@ -1543,8 +1543,8 @@
  _ZTVN2FS8reiserfsE@Base 21.12.1
  _ZTVN2FS9bitlockerE@Base 21.12.1
  _ZTVN2FS9linuxswapE@Base 21.12.1
- (arch=!armel !riscv64)_ZTVSt23_Sp_counted_ptr_inplaceI11SmartStatusSaIS0_ELN9__gnu_cxx12_Lock_policyE2EE@Base 21.12.1
  (arch=armel riscv64)_ZTVSt23_Sp_counted_ptr_inplaceI11SmartStatusSaIS0_ELN9__gnu_cxx12_Lock_policyE1EE@Base 21.12.1
+ (optional=notarmelnotriscvandprobabllynotraspbian)_ZTVSt23_Sp_counted_ptr_inplaceI11SmartStatusSaIS0_ELN9__gnu_cxx12_Lock_policyE2EE@Base 20.12.2
  _ZZNSt19_Sp_make_shared_tag5_S_tiEvE5__tag@Base 21.12.1
  _ZZZN10KAboutDataC4ERK7QStringS2_S2_S2_N13KAboutLicense10LicenseKeyES2_S2_S2_S2_Ed_NKUlvE_clEvE15qstring_literal@Base 21.12.1
  _ZZZNK12NewOperation8iconNameEvENKUlvE_clEvE15qstring_literal@Base 21.12.1