[uml-devel] uml (2.4.19-36) in skas mode dies of segfault

[Jan H. <bu...@uc...>]

Hello,

My uml dies of segfault. The very same kernel with the very same setup
runs in tt mode. It's currently 2.4.19-36um, but 2.4.19-34um exhibited
the same behaviour.

It's quite hard to get sane info from gdb and I don't much understand
what's going on there. This is what gdb tells me, if I set it to stop on
SIGSEGV (everyting prefixed with `" '):

" * arp -Ds 192.168.1.253 tap1 pub
" * arp -Ds 192.168.1.253 tap0 pub
" mke2fs 1.25 (20-Sep-2001)
" mount: proc already mounted on /proc
" /dev/rd/0 on /tmp type ext2 (rw)
" 
" Program received signal SIGSEGV, Segmentation fault.
" 0xa00a412b in new_thread (stack=Cannot access memory at address 0x8
" ) at process.c:182
" 182	}
" (gdb) bt
" #0  0xa00a412b in new_thread (stack=Cannot access memory at address 0x8
" ) at process.c:182
" Cannot access memory at address 0x0
" (gdb) c
" Continuing.
" 
" Program received signal SIGSEGV, Segmentation fault.
" 0xa00a412b in new_thread (stack=Cannot access memory at address 0x8
" ) at process.c:182
" 182	}
" (gdb) bt
" #0  0xa00a412b in new_thread (stack=Cannot access memory at address 0x8
" ) at process.c:182
" Cannot access memory at address 0x0
" (gdb) c
" Continuing.
" 
" Program terminated with signal SIGSEGV, Segmentation fault.
" The program no longer exists.
" (gdb) 

The 5 lines at the begining are output of the umlinux. The first two are
from uml_net as a result if ifconfig. Then mke2fs makes ext2 filesystem
on a ramdisk and that is then mounted by mount -a (the last of output).
The relevant part of the rc script looks like:
" mount -avt nonfs
" /sbin/portmap
" /sbin/rpc.statd
" /sbin/rpc.lockd
" mount -avt nfs
Where the first command probably completes correctly.

I can have a closer look at what's happening, but I am not sure what to
look at first.

-------------------------------------------------------------------------------
						 Jan 'Bulb' Hudec <bu...@uc...>