[Bug libc/31701] New: sparc64: qemu bootup fails

[Bug libc/31701] New: sparc64: qemu bootup fails

[wbx at openadk dot org]

https://sourceware.org/bugzilla/show_bug.cgi?id=31701

            Bug ID: 31701
           Summary: sparc64: qemu bootup fails
           Product: glibc
           Version: 2.39
            Status: UNCONFIRMED
          Severity: normal
          Priority: P2
         Component: libc
          Assignee: unassigned at sourceware dot org
          Reporter: wbx at openadk dot org
                CC: drepper.fsp at gmail dot com
  Target Milestone: ---

Hi,

Bootup in Qemu fails with following segfault:
[    1.913421] Run /init as init process
[    1.996616] init[1]: segfault at 2610ec ip 00000000002610ec (rpc
fffff80100b30474) sp 000007feffa311f1 error 1 in busybox[3fe000+2000]
[    2.002084] Kernel panic - not syncing: Attempted to kill init!
exitcode=0x0000000b
[    2.003136] Press Stop-A (L1-A) from sun keyboard or send break
[    2.003136] twice on console to return to the boot prom
[    2.004048] ---[ end Kernel panic - not syncing: Attempted to kill init!
exitcode=0x0000000b ]---

Commands to reproduce:
wget https://debug.openadk.org/qemu-sparc64-initramfspiggyback-kernel
qemu-system-sparc64 -M sun4u -nographic -net nic,model=e1000 -net user -kernel
qemu-sparc64-initramfspiggyback-kernel

Binutils 2.42, Gcc 13.2.0 and Linux Kernel 6.6.28 is used.

./toolchain_qemu-sparc64_glibc_v9/usr/bin/sparc64-openadk-linux-gnu-gcc -v
Using built-in specs.
COLLECT_GCC=./toolchain_qemu-sparc64_glibc_v9/usr/bin/sparc64-openadk-linux-gnu-gcc
COLLECT_LTO_WRAPPER=/home/browa22-ext/sparc64-glibc/toolchain_qemu-sparc64_glibc_v9/usr/libexec/gcc/sparc64-openadk-linux-gnu/13.2.0/lto-wrapper
Target: sparc64-openadk-linux-gnu
Configured with:
/home/browa22-ext/sparc64-glibc/toolchain_build_qemu-sparc64_glibc_v9/w-gcc-13.2.0-1/gcc-13.2.0/configure
--prefix=/home/browa22-ext/sparc64-glibc/toolchain_qemu-sparc64_glibc_v9/usr
--with-bugurl=https://openadk.org --build=x86_64-linux-gnu
--host=x86_64-linux-gnu --target=sparc64-openadk-linux-gnu
--with-gmp=/home/browa22-ext/sparc64-glibc/host_x86_64-linux-gnu/usr
--with-mpfr=/home/browa22-ext/sparc64-glibc/host_x86_64-linux-gnu/usr
--enable-__cxa_atexit --with-system-zlib --with-gnu-ld --with-gnu-as
--disable-libsanitizer --disable-install-libiberty --disable-libitm
--disable-libmudflap --disable-libgomp --disable-libcc1 --disable-libmpx
--disable-libcilkrts --disable-libquadmath --disable-libquadmath-support
--disable-decimal-float --disable-gcov --disable-libstdcxx-pch
--disable-ppl-version-check --disable-cloog-version-check --without-ppl
--without-cloog --without-isl --disable-werror --disable-nls --enable-obsolete
--disable-lto --with-cpu=ultrasparc --enable-tls --enable-threads
--enable-libatomic --enable-shared --enable-cxx-flags=-fPIC --disable-libssp
--disable-biarch --disable-multilib --enable-languages=c
--with-build-sysroot='/../../target_qemu-sparc64_glibc_v9'
--with-sysroot='/../../target_qemu-sparc64_glibc_v9'
Thread model: posix
Supported LTO compression algorithms: zlib zstd
gcc version 13.2.0 (GCC) 

What could be the reason for it? Anyone use Sparc64 GLibc in Qemu?

best regards
 Waldemar

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[Bug libc/31701] sparc64: qemu bootup fails

[adhemerval.zanella at linaro dot org]

https://sourceware.org/bugzilla/show_bug.cgi?id=31701

Adhemerval Zanella <adhemerval.zanella at linaro dot org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |adhemerval.zanella at linaro dot o
                   |                            |rg

--- Comment #1 from Adhemerval Zanella <adhemerval.zanella at linaro dot org> ---
We have a longstanding issue where static build fails when glibc is built for
static-pie (check https://sourceware.org/bugzilla/show_bug.cgi?id=29575). Could
it be related (not sue if init is static built)?

There is some couple week since I checked sparc, but I haven't see any more
regressions than the usual ones.

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[Bug libc/31701] sparc64: qemu bootup fails

[wbx at openadk dot org]

https://sourceware.org/bugzilla/show_bug.cgi?id=31701

--- Comment #2 from wbx at openadk dot org ---
I checked with Buildroot and that is working. I don't understand while my cross
toolchain does not generate working binaries. I tried a static hello world as
init and get a segfault. I am now trying to debug this hello world on a
Buildroot system, but have some issues with gdb. In parallel I am installing
Debian in Qemu and updating it to latest.

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[Bug libc/31701] sparc64: qemu bootup fails

[wbx at openadk dot org]

https://sourceware.org/bugzilla/show_bug.cgi?id=31701

wbx at openadk dot org changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|UNCONFIRMED                 |RESOLVED
         Resolution|---                         |FIXED

--- Comment #3 from wbx at openadk dot org ---
Okay, you are right. I added --disable-static-pie to glibc configure and now it
is working! Thanks.

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