Le 26/03/2019 à 21:12, Segher Boessenkool a écrit :
On Tue, Mar 26, 2019 at 08:28:58PM +0100, Christophe Leroy wrote:


Le 26/03/2019 à 19:19, Segher Boessenkool a écrit :
On Tue, Mar 26, 2019 at 07:55:33AM +0000, Christophe Leroy wrote:
    STACK off    0x00000000 vaddr 0x00000000 paddr 0x00000000 align 2**4
          filesz 0x00000000 memsz 0x00000000 flags rwx

You need to prevent this one somehow.  What object file forces this?

mpc885_ads_defconfig

No, which object file, ".o file".  Not defconfig :-)


Ok, how to I know that ? Is it based on some file flags or some headers ?

Here is the list of headers in vmlinux.o, is there one that shouldn't exist ?


vmlinux.o:     file format elf32-powerpc

Sections:
Idx Name          Size      VMA       LMA       File off  Algn
  0 .text         003320c0  00000000  00000000  00001000  2**12
                  CONTENTS, ALLOC, LOAD, RELOC, READONLY, CODE
  1 .head.text    00002340  00000000  00000000  003330c0  2**0
                  CONTENTS, ALLOC, LOAD, RELOC, READONLY, CODE
  2 .init.text    00017cb8  00000000  00000000  00335400  2**2
                  CONTENTS, ALLOC, LOAD, RELOC, READONLY, CODE
  3 .text.unlikely 00004154  00000000  00000000  0034d0b8  2**2
                  CONTENTS, ALLOC, LOAD, RELOC, READONLY, CODE
  4 .ref.text     000013f0  00000000  00000000  0035120c  2**2
                  CONTENTS, ALLOC, LOAD, RELOC, READONLY, CODE
  5 .softirqentry.text 00000258  00000000  00000000  003525fc  2**2
                  CONTENTS, ALLOC, LOAD, RELOC, READONLY, CODE
  6 .sched.text   00003930  00000000  00000000  00352854  2**2
                  CONTENTS, ALLOC, LOAD, RELOC, READONLY, CODE
  7 .cpuidle.text 0000007c  00000000  00000000  00356184  2**2
                  CONTENTS, ALLOC, LOAD, RELOC, READONLY, CODE
  8 .meminit.text 00000584  00000000  00000000  00356200  2**2
                  CONTENTS, ALLOC, LOAD, RELOC, READONLY, CODE
  9 .exit.text    00000800  00000000  00000000  00356784  2**2
                  CONTENTS, ALLOC, LOAD, RELOC, READONLY, CODE
 10 .rodata       0001d7a7  00000000  00000000  00356f90  2**4
                  CONTENTS, ALLOC, LOAD, RELOC, READONLY, DATA
 11 .init.rodata  00000790  00000000  00000000  00374738  2**2
                  CONTENTS, ALLOC, LOAD, RELOC, READONLY, DATA
 12 .rodata.str1.4 00022329  00000000  00000000  00374ec8  2**2
                  CONTENTS, ALLOC, LOAD, READONLY, DATA
 13 __param       000003c0  00000000  00000000  003971f4  2**2
                  CONTENTS, ALLOC, LOAD, RELOC, READONLY, DATA
 14 .note.Linux   00000018  00000000  00000000  003975b4  2**2
                  CONTENTS, ALLOC, LOAD, READONLY, DATA
 15 __ex_table    00000ca8  00000000  00000000  003975cc  2**2
                  CONTENTS, ALLOC, LOAD, RELOC, READONLY, DATA
 16 __ftr_alt_97  00000008  00000000  00000000  00398274  2**2
                  CONTENTS, ALLOC, LOAD, READONLY, DATA
 17 __ftr_fixup   00000198  00000000  00000000  00398280  2**3
                  CONTENTS, ALLOC, LOAD, RELOC, READONLY, DATA
 18 __reservedmem_of_table 000000c4  00000000  00000000  00398418  2**2
                  CONTENTS, ALLOC, LOAD, RELOC, READONLY, DATA
 19 __irqchip_of_table_end 000000c4  00000000  00000000  003984dc  2**2
                  CONTENTS, ALLOC, LOAD, READONLY, DATA
 20 __modver      00000008  00000000  00000000  003985a0  2**2
                  CONTENTS, ALLOC, LOAD, RELOC, READONLY, DATA
 21 __reservedmem_of_table_end 000000c4  00000000  00000000  003985a8  2**2
                  CONTENTS, ALLOC, LOAD, READONLY, DATA
 22 .eh_frame     00134eb8  00000000  00000000  0039866c  2**2
                  CONTENTS, ALLOC, LOAD, RELOC, READONLY, DATA
 23 .fixup        00000cc8  00000000  00000000  004cd524  2**0
                  CONTENTS, ALLOC, LOAD, RELOC, READONLY, CODE
 24 .data         00013668  00000000  00000000  004cf000  2**12
                  CONTENTS, ALLOC, LOAD, RELOC, DATA
 25 __bug_table   00006ce4  00000000  00000000  004e2668  2**0
                  CONTENTS, ALLOC, LOAD, RELOC, DATA
 26 .data..read_mostly 00001ce8  00000000  00000000  004e9350  2**3
                  CONTENTS, ALLOC, LOAD, RELOC, DATA
 27 .init.data    0000244c  00000000  00000000  004eb038  2**2
                  CONTENTS, ALLOC, LOAD, RELOC, DATA
 28 .init.setup   0000039c  00000000  00000000  004ed484  2**2
                  CONTENTS, ALLOC, LOAD, RELOC, DATA
 29 .initcallrootfs.init 00000004  00000000  00000000  004ed820  2**2
                  CONTENTS, ALLOC, LOAD, RELOC, DATA
 30 .data..page_aligned 00003000  00000000  00000000  004ee000  2**12
                  CONTENTS, ALLOC, LOAD, DATA
 31 .initcall3.init 00000008  00000000  00000000  004f1000  2**2
                  CONTENTS, ALLOC, LOAD, RELOC, DATA
 32 .initcallearly.init 00000010  00000000  00000000  004f1008  2**2
                  CONTENTS, ALLOC, LOAD, RELOC, DATA
 33 .initcall6.init 00000120  00000000  00000000  004f1018  2**2
                  CONTENTS, ALLOC, LOAD, RELOC, DATA
 34 .initcall4.init 00000080  00000000  00000000  004f1138  2**2
                  CONTENTS, ALLOC, LOAD, RELOC, DATA
 35 .data.once    0000009e  00000000  00000000  004f11b8  2**0
                  CONTENTS, ALLOC, LOAD, DATA
 36 .initcall1.init 00000048  00000000  00000000  004f1258  2**2
                  CONTENTS, ALLOC, LOAD, RELOC, DATA
 37 .initcall7.init 00000030  00000000  00000000  004f12a0  2**2
                  CONTENTS, ALLOC, LOAD, RELOC, DATA
 38 .machine.desc 000000e0  00000000  00000000  004f12d0  2**2
                  CONTENTS, ALLOC, LOAD, RELOC, DATA
 39 .data..cacheline_aligned 00005000  00000000  00000000  004f13b0  2**4
                  CONTENTS, ALLOC, LOAD, DATA
 40 .data..ro_after_init 000004b8  00000000  00000000  004f63b0  2**2
                  CONTENTS, ALLOC, LOAD, RELOC, DATA
 41 .initcall2.init 00000018  00000000  00000000  004f6868  2**2
                  CONTENTS, ALLOC, LOAD, RELOC, DATA
 42 .initcall5.init 00000070  00000000  00000000  004f6880  2**2
                  CONTENTS, ALLOC, LOAD, RELOC, DATA
 43 .meminit.data 00000010  00000000  00000000  004f68f0  2**2
                  CONTENTS, ALLOC, LOAD, DATA
 44 .ref.data     00000578  00000000  00000000  004f6900  2**2
                  CONTENTS, ALLOC, LOAD, DATA
 45 .exitcall.exit 000000b0  00000000  00000000  004f6e78  2**2
                  CONTENTS, ALLOC, LOAD, RELOC, DATA
 46 .initcall0.init 0000000c  00000000  00000000  004f6f28  2**2
                  CONTENTS, ALLOC, LOAD, RELOC, DATA
 47 .con_initcall.init 00000004  00000000  00000000  004f6f34  2**2
                  CONTENTS, ALLOC, LOAD, RELOC, DATA
 48 .initcall7s.init 00000004  00000000  00000000  004f6f38  2**2
                  CONTENTS, ALLOC, LOAD, RELOC, DATA
 49 .data..shared_aligned 00000118  00000000  00000000  004f6f40  2**4
                  CONTENTS, ALLOC, LOAD, DATA
 50 .sdata        00000188  00000000  00000000  004f7058  2**3
                  CONTENTS, ALLOC, LOAD, RELOC, DATA
 51 .sbss         000002d4  00000000  00000000  004f71e0  2**3
                  ALLOC
 52 .bss          0001e728  00000000  00000000  004f71e0  2**4
                  ALLOC
 53 .stab         00000270  00000000  00000000  004f71e0  2**2
                  CONTENTS, RELOC, READONLY, DEBUGGING
 54 .stabstr      00000335  00000000  00000000  004f7450  2**0
                  CONTENTS, READONLY, DEBUGGING
 55 .comment      0000339c  00000000  00000000  004f7785  2**0
                  CONTENTS, READONLY
 56 .note.GNU-stack 00000000  00000000  00000000  004fab21  2**0
                  CONTENTS, READONLY, CODE
 57 .debug_aranges 000077e8  00000000  00000000  004fab28  2**3
                  CONTENTS, RELOC, READONLY, DEBUGGING
 58 .debug_info   030a43d8  00000000  00000000  00502310  2**0
                  CONTENTS, RELOC, READONLY, DEBUGGING
 59 .debug_abbrev 0018bdc0  00000000  00000000  035a66e8  2**0
                  CONTENTS, READONLY, DEBUGGING
 60 .debug_line   005d69b9  00000000  00000000  037324a8  2**0
                  CONTENTS, RELOC, READONLY, DEBUGGING
 61 .debug_frame  00134eb8  00000000  00000000  03d08e64  2**2
                  CONTENTS, RELOC, READONLY, DEBUGGING
 62 .debug_str    01b24fc1  00000000  00000000  03e3dd1c  2**0
                  CONTENTS, READONLY, DEBUGGING
 63 .debug_loc    00242597  00000000  00000000  05962cdd  2**0
                  CONTENTS, RELOC, READONLY, DEBUGGING
 64 .debug_ranges 001ea010  00000000  00000000  05ba5274  2**0
                  CONTENTS, RELOC, READONLY, DEBUGGING
 65 .gnu.attributes 00000012  00000000  00000000  05d8f284  2**0
                  CONTENTS, READONLY


Christophe

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