Hi Ard, On lun., oct. 30 2017, Ard Biesheuvel <ard.biesheu...@linaro.org> wrote:
> On 30 October 2017 at 15:33, Gregory CLEMENT > <gregory.clem...@free-electrons.com> wrote: >> Hi Ard, >> >> On lun., oct. 30 2017, Ard Biesheuvel <ard.biesheu...@linaro.org> wrote: >> >>> On 30 October 2017 at 15:09, Gregory CLEMENT >>> <gregory.clem...@free-electrons.com> wrote: >>>> Hi Ard, >>>> >>>> On lun., oct. 30 2017, Ard Biesheuvel <ard.biesheu...@linaro.org> wrote: >>>> >>>>> On 30 October 2017 at 15:05, Gregory CLEMENT >>>>> <gregory.clem...@free-electrons.com> wrote: >>>>>> Hi Ard, >>>>>> >>>>>> On lun., oct. 30 2017, Ard Biesheuvel <ard.biesheu...@linaro.org> wrote: >>>>>> >>>>> ... >>>>>>> >>>>>>> Could you please share the output of 'readelf -S' for those vmlinux >>>>>>> decompressor images? >>>>>> >>>>>> Here it is: >>>>>> >>>>>> In the meantime I also used an arm-linux-gnueabihf- in case it could be >>>>>> related to the toolchain, I had te same issue and here it is the readelf >>>>>> output: >>>>>> arm-linux-gnueabi-readelf -S ../build/vmlinux >>>>> >>>>> Actually, I meant the 'vmlinux' file in arch/arm/boot/compressed, not >>>>> the main one. >>>> >>>> Here it is then: >>>> >>>> arm-linux-gnueabi-readelf -S ../build/arch/arm/boot/compressed/vmlinux >>>> There are 22 section headers, starting at offset 0x4b3e14: >>>> >>>> Section Headers: >>>> [Nr] Name Type Addr Off Size ES Flg Lk >>>> Inf Al >>>> [ 0] NULL 00000000 000000 000000 00 0 >>>> 0 0 >>>> [ 1] .text PROGBITS 00000000 010000 005ef8 00 AX 0 >>>> 0 32 >>>> [ 2] .rodata PROGBITS 00005ef8 015ef8 000d4c 00 A 0 >>>> 0 4 >>>> [ 3] .piggydata PROGBITS 00006c44 016c44 48a33a 00 A 0 >>>> 0 1 >>>> [ 4] .got.plt PROGBITS 00490f80 4a0f80 00000c 04 WA 0 >>>> 0 4 >>>> [ 5] .got PROGBITS 00490f8c 4a0f8c 000028 00 WA 0 >>>> 0 4 >>>> [ 6] .pad PROGBITS 00490fb4 4a0fb4 000004 00 WA 0 >>>> 0 1 >>>> [ 7] .bss NOBITS 00490fb8 4a0fb8 00001c 00 WA 0 >>>> 0 4 >>>> [ 8] .stack NOBITS 00490fd8 4a0fb8 001000 00 WA 0 >>>> 0 1 >>>> [ 9] .comment PROGBITS 00000000 4a0fb8 00001c 01 MS 0 >>>> 0 1 >>>> [10] .ARM.attributes ARM_ATTRIBUTES 00000000 4a0fd4 00002d 00 0 >>>> 0 1 >>>> [11] .debug_line PROGBITS 00000000 4a1001 00281b 00 0 >>>> 0 1 >>>> [12] .debug_info PROGBITS 00000000 4a381c 0066cb 00 0 >>>> 0 1 >>>> [13] .debug_abbrev PROGBITS 00000000 4a9ee7 0013ea 00 0 >>>> 0 1 >>>> [14] .debug_aranges PROGBITS 00000000 4ab2d8 0001a8 00 0 >>>> 0 8 >>>> [15] .debug_str PROGBITS 00000000 4ab480 0019b4 01 MS 0 >>>> 0 1 >>>> [16] .debug_ranges PROGBITS 00000000 4ace38 000640 00 0 >>>> 0 8 >>>> [17] .debug_frame PROGBITS 00000000 4ad478 001010 00 0 >>>> 0 4 >>>> [18] .debug_loc PROGBITS 00000000 4ae488 003643 00 0 >>>> 0 1 >>>> [19] .symtab SYMTAB 00000000 4b1acc 0015b0 10 20 >>>> 225 4 >>>> [20] .strtab STRTAB 00000000 4b307c 000cc5 00 0 >>>> 0 1 >>>> [21] .shstrtab STRTAB 00000000 4b3d41 0000d2 00 0 >>>> 0 1 >>>> Key to Flags: >>>> W (write), A (alloc), X (execute), M (merge), S (strings), I (info), >>>> L (link order), O (extra OS processing required), G (group), T (TLS), >>>> C (compressed), x (unknown), o (OS specific), E (exclude), >>>> y (purecode), p (processor specific) >>>> >>> >>> And this is from the build the build that generated the linker assert? >> >> Humm no, actually it was with the wrong branch. If I have the patch >> "ARM: verify size of zImage" then arch/arm/boot/compressed/vmlinux is >> not generated. >> >> But if I remove this patch then I can generate this file and so: >> arm-linux-gnueabi-readelf -S ../build/arch/arm/boot/compressed/vmlinux >> There are 22 section headers, starting at offset 0x4b402c: >> >> Section Headers: >> [Nr] Name Type Addr Off Size ES Flg Lk >> Inf Al >> [ 0] NULL 00000000 000000 000000 00 0 >> 0 0 >> [ 1] .text PROGBITS 00000000 010000 005ef8 00 AX 0 >> 0 32 >> [ 2] .rodata PROGBITS 00005ef8 015ef8 000d4c 00 A 0 >> 0 4 >> [ 3] .piggydata PROGBITS 00006c44 016c44 48a552 00 A 0 >> 0 1 >> [ 4] .got.plt PROGBITS 00491198 4a1198 00000c 04 WA 0 >> 0 4 >> [ 5] .got PROGBITS 004911a4 4a11a4 000028 00 WA 0 >> 0 4 >> [ 6] .pad PROGBITS 004911cc 4a11cc 000004 00 WA 0 >> 0 1 >> [ 7] .bss NOBITS 004911d0 4a11d0 00001c 00 WA 0 >> 0 4 >> [ 8] .stack NOBITS 004911f0 4a11d0 001000 00 WA 0 >> 0 1 >> [ 9] .comment PROGBITS 00000000 4a11d0 00001c 01 MS 0 >> 0 1 >> [10] .ARM.attributes ARM_ATTRIBUTES 00000000 4a11ec 00002d 00 0 >> 0 1 >> [11] .debug_line PROGBITS 00000000 4a1219 00281b 00 0 >> 0 1 >> [12] .debug_info PROGBITS 00000000 4a3a34 0066cb 00 0 >> 0 1 >> [13] .debug_abbrev PROGBITS 00000000 4aa0ff 0013ea 00 0 >> 0 1 >> [14] .debug_aranges PROGBITS 00000000 4ab4f0 0001a8 00 0 >> 0 8 >> [15] .debug_str PROGBITS 00000000 4ab698 0019b4 01 MS 0 >> 0 1 >> [16] .debug_ranges PROGBITS 00000000 4ad050 000640 00 0 >> 0 8 >> [17] .debug_frame PROGBITS 00000000 4ad690 001010 00 0 >> 0 4 >> [18] .debug_loc PROGBITS 00000000 4ae6a0 003643 00 0 >> 0 1 >> [19] .symtab SYMTAB 00000000 4b1ce4 0015b0 10 20 >> 225 4 >> [20] .strtab STRTAB 00000000 4b3294 000cc5 00 0 >> 0 1 >> [21] .shstrtab STRTAB 00000000 4b3f59 0000d2 00 0 >> 0 1 >> >>> >>> Could you check the value of _edata in the output of 'nm vmlinux' >>> please? >> With this kernel: >> >> arm-linux-gnueabi-nm ../build/arch/arm/boot/compressed/vmlinux | grep _edata >> 004911d0 D _edata >> > > Well, that is disappointing. This means the ASSERT() does not work > reliably, and we're back to using a bunch of shell scripts to check > whether _edata appears at the end of the image. > > Which version of binutils are you using? arm-linux-gnueabi-ld -v GNU ld (GNU Binutils for Debian) 2.29.1 And for gcc: arm-linux-gnueabi-gcc -v Using built-in specs. COLLECT_GCC=arm-linux-gnueabi-gcc COLLECT_LTO_WRAPPER=/usr/lib/gcc-cross/arm-linux-gnueabi/7/lto-wrapper Target: arm-linux-gnueabi Configured with: ../src/configure -v --with-pkgversion='Debian 7.2.0-6' --with-bugurl=file:///usr/share/doc/gcc-7/README.Bugs --enable-languages=c,ada,c++,go,d,fortran,objc,obj-c++ --prefix=/usr --with-gcc-major-version-only --program-suffix=-7 --enable-shared --enable-linker-build-id --libexecdir=/usr/lib --without-included-gettext --enable-threads=posix --libdir=/usr/lib --enable-nls --with-sysroot=/ --enable-clocale=gnu --enable-libstdcxx-debug --enable-libstdcxx-time=yes --with-default-libstdcxx-abi=new --enable-gnu-unique-object --disable-libitm --disable-libquadmath --enable-plugin --enable-default-pie --with-system-zlib --with-target-system-zlib --enable-multiarch --disable-sjlj-exceptions --with-arch=armv4t --with-float=soft --disable-werror --enable-checking=release --build=x86_64-linux-gnu --host=x86_64-linux-gnu --target=arm-linux-gnueabi --program-prefix=arm-linux-gnueabi- --includedir=/usr/arm-linux-gnueabi/include Thread model: posix gcc version 7.2.0 (Debian 7.2.0-6) Gregory -- Gregory Clement, Free Electrons Kernel, drivers, real-time and embedded Linux development, consulting, training and support. http://free-electrons.com
