[reactos] 01/01: [NTOSKRNL] Restore section layout for NTOSKRNL to fix BSOD regression CORE-14683

[Joachim Henze]

https://git.reactos.org/?p=reactos.git;a=commitdiff;h=d28677795e98cdd4fdf0f…

commit d28677795e98cdd4fdf0f4aff2773197a6b39718
Author:     Joachim Henze <Joachim.Henze(a)reactos.org>
AuthorDate: Wed May 13 17:08:25 2020 +0200
Commit:     Joachim Henze <Joachim.Henze(a)reactos.org>
CommitDate: Wed May 13 17:09:15 2020 +0200

    [NTOSKRNL] Restore section layout for NTOSKRNL to fix BSOD regression CORE-14683
    
    This version (after .rsrc) works different than the
    proper version I used for 0.4.12 (after .reloc).
    
    Inserting after .rsrc is actually not correct, but Thomas believes it can
    be used as a temporary trick to avoid random memory corruption upon
    relocations of the kernel, caused by ROSBE-154.
    
    I follow his advice, although when judging from practical tests only:
    as long as we limit this script to NTOSKRNL like I do for releases
    there have no negative consequences been observed in real life yet
    even with the proper version of 0.4.12.
    Up to now those problems have only been observed when used for drivers
    MODULE TYPE sdk/cmake/gcc.cmake as well, like
    it was tried for a moment in master 0.4.13-dev-609-g
    c4d8e2a6e9660c1f0d0d24877219baca443bbce0
    
    Using for drivers immediately did lead to BSODs like CORE-16183 and therefore was
    mitigated in master by total disabling of the scripts for both,
    kernel and drivers in
    0.4.13-dev-621-g
    36e9a6f8ddc70018b55b0cad0b13128b1cbb60c2
    
    To allow installing DVDWritenow without BSOD,
    we need the script at least for ntoskrnl!
    
    I committed this patch (after .rsrc) already into 0.4.13RC and 0.4.14RC.
---
 ntoskrnl/CMakeLists.txt    | 3 +--
 sdk/cmake/init-section.lds | 3 ++-
 2 files changed, 3 insertions(+), 3 deletions(-)

diff --git a/ntoskrnl/CMakeLists.txt b/ntoskrnl/CMakeLists.txt
index 96fcab407d9..be575b9892f 100644
--- a/ntoskrnl/CMakeLists.txt
+++ b/ntoskrnl/CMakeLists.txt
@@ -38,8 +38,7 @@ else()
     else()
         set_image_base(ntoskrnl 0x80800000)
     endif()
-    #Disabled due to LD bug: ROSBE-154
-    #add_linker_script(ntoskrnl ${REACTOS_SOURCE_DIR}/sdk/cmake/init-section.lds)
+    add_linker_script(ntoskrnl ${REACTOS_SOURCE_DIR}/sdk/cmake/init-section.lds)
 endif()
 
 target_link_libraries(ntoskrnl cportlib csq ${PSEH_LIB} arbiter cmlib ntlsalib rtl
${ROSSYM_LIB} libcntpr wdmguid ioevent)
diff --git a/sdk/cmake/init-section.lds b/sdk/cmake/init-section.lds
index 2b815150105..ca46bd1451e 100644
--- a/sdk/cmake/init-section.lds
+++ b/sdk/cmake/init-section.lds
@@ -8,4 +8,5 @@ SECTIONS
     __init_end__ = . ;
   }
 }
-INSERT AFTER .reloc;
+/*INSERT AFTER .reloc;*//*This is what we actually want to do, but do not dare due to LD
bug ROSBE-154*/
+INSERT AFTER .rsrc; /*This is what we do instead to at least fix CORE-14683*/