[uml-user] Custom Compile Won't Boot

[Rick S. <nec...@gm...>]

I followed the instructions on the website to build the kernel, and it
appears to finish making (no build errors) but when I try running it
with this command:

./linux ubda=../FedoraCore5-x86-root_fs mem=128M

It doesn't boot, and gives me this error:

VFS: Mounted root (ext3 filesystem) readonly.
cannot set up thread-local storage: set_thread_area failed when
setting up thread-local storage

Kernel panic - not syncing: Attempted to kill init!

EIP: 0073:[<40014a8f>] CPU: 0 Not tainted ESP: 007b:bf429d18 EFLAGS: 00000246
    Not tainted
EAX: ffffffda EBX: 0000007f ECX: bf429aec EDX: 00000003
ESI: 40016de8 EDI: 40016da8 EBP: bf429d44 DS: 007b ES: 007b
10507bac:  [<08069c6c>] show_regs+0xc4/0xc9
10507bd8:  [<08058fc8>] panic_exit+0x23/0x3d
10507bec:  [<080790b9>] notifier_call_chain+0x1a/0x3a
10507c0c:  [<0806db3b>] panic+0x4f/0xcc
10507c28:  [<0806fbb8>] do_exit+0x6a/0x318
10507c48:  [<0806ff34>] sys_exit_group+0x0/0x13
10507c60:  [<0806ff44>] sys_exit_group+0x10/0x13
10507c6c:  [<080596de>] handle_syscall+0x86/0xa0
10507cb8:  [<08066f14>] userspace+0x1fb/0x23f
10507d00:  [<08059382>] new_thread_handler+0x9a/0xa9
10507d1c:  [<0023b420>] 0x23b420

 remove_umid_dir - actually_do_remove failed with err = -39

-bash-3.00$

I find this interesting, because the precompiled binary availabe at:

http://user-mode-linux.sourceforge.net/new/linux-2.6.16.bz2

Works perfectly fine, this tells me that somehow I'm not compiling
correctly, even though make succeeds. I was very careful to make sure
ARCH=um, and also set the environment variable ARCH=um just to be
extra sure. I even did make mrproper && make mrproper ARCH=um, then
redid the build, and it still doesn't seem to work. Any ideas?

-- 

Rick
nec...@gm...