On Wed, Dec 07, 2005 at 07:09:47PM +0100, Blaisorblade wrote: > On Wednesday 07 December 2005 17:07, Christoph Dwertmann wrote: > > Hi! > > > I'm trying to build my own UML kernel here. It builds fine, but > > executing the kernel leads to: > > > GDB shows this: > > > Program received signal SIGSEGV, Segmentation fault. > > 0xa028a2d5 in __libc_setup_tls () > > Current language: auto; currently asm > > (gdb) bt > > #0 0xa028a2d5 in __libc_setup_tls () > > #1 0xa028a66f in __pthread_initialize_minimal () > > #2 0xa028a045 in __libc_start_main () > > #3 0xa0014021 in _start () at ../sysdeps/i386/elf/start.S:119 > > Ok, it's due to some weird toolchain-related bug. > > > I've built kernels 2.4.23, 2.4.27, 2.4.28 and 2.6.14 with > > Blaisorblade's UML patches. The host kernel is 2.6.15-rc5 vanilla, and > > I'm running Debian sid (updated daily) on x86. > > Ok, it's a bug in some new binutils/GCC/glibc. While we try to debug the > thing, can you post the releases of these 3 components? Also, can you upload > somewhere and post the URL of your compressed "ld" binary?
Hi, thanks for your reply. Here's my configuration: alderaan:~/uml# gcc --version gcc (GCC) 4.0.3 20051201 (prerelease) (Debian 4.0.2-5) alderaan:~/uml# dpkg -l | grep binutils ii binutils 2.16.1cvs20051117-1 alderaan:~/uml# dpkg -l | grep glibc ii libstdc++2.10-glibc2.2 2.95.4-24 (is this the package containing glibc?) alderaan:~/uml# dpkg -l | grep libc6 ii libc6 2.3.5-8.1 ii libc6-dev 2.3.5-8.1 Grab my ld binary here: http://www.informatik.uni-bremen.de/~nermal/ld.bz2 > Btw, to help with the current problem (while fixing the bug), have you any > need unsatisified by existing binaries (either on my site or on > uml.nagafix.co.uk ?). yeah I need to apply a few custom kernel patches, and maybe modify them to fit my needs. I really need to be able to compile my own UML kernels. But thanks for the offer! > > Renaming /lib/tls does not help. > > Even doing that on the host? In this (exceptional) case, the result of that > may be useful. I just re-checked that: it makes no difference. I noticed that most of the people having this error use a recent Debian or Gentoo system. The cause must be somewhere in my build system, as precompiled binaries run. Thanks, Christoph
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