More info:

I tried http://uml.nagafix.co.uk/kernels/kernel32-2.6.19.7 with DSL and fc5 image,and get this, maybe more useful:

INIT: version 2.86 booting
[42949375.810000] BUG: failure at mm/mmap.c:1997/exit_mmap()!
[42949375.810000] Kernel panic - not syncing: BUG!
[42949375.810000]
[42949375.810000] EIP: 0073:[<40000822>] CPU: 0 Not tainted ESP: 007b:7fa53438 EFLAGS: 00200202
[42949375.810000]     Not tainted
[42949375.810000] EAX: ffffffda EBX: 7fa53680 ECX: 7fa5363c EDX: 080516a8
[42949375.810000] ESI: 7fa534b0 EDI: 401aaff4 EBP: 7fa53718 DS: 007b ES: 007b
[42949375.810000] 09c83c3c:  [<08070318>] show_regs+0xb4/0xb9
[42949375.810000] 09c83c68:  [<0805e6f3>] panic_exit+0x25/0x3f
[42949375.810000] 09c83c7c:  [<08081208>] notifier_call_chain+0x1d/0x37
[42949375.810000] 09c83c9c:  [<08081292>] atomic_notifier_call_chain+0x11/0x13
[42949375.810000] 09c83cb0:  [<080758fe>] panic+0x52/0xdd
[42949375.810000] 09c83cd0:  [<080a35e2>] exit_mmap+0xb7/0xbf
[42949375.810000] 09c83d00:  [<08073a29>] mmput+0x1e/0x65
[42949375.810000 ] 09c83d10:  [<080b2df3>] exec_mmap+0xda/0xfe
[42949375.810000] 09c83d2c:  [<080b3211>] flush_old_exec+0x51/0x21a
[42949375.810000] 09c83d5c:  [<080d5ffb>] load_elf_binary+0x409/0xb01
[42949375.810000 ] 09c83dd8:  [<080b3624>] search_binary_handler+0x66/0x10f
[42949375.810000] 09c83dfc:  [<080d51f1>] load_script+0x1a9/0x1bc
[42949375.810000] 09c83ea4:  [<080b3624>] search_binary_handler+0x66/0x10f
[42949375.810000] 09c83ec8:  [<080b3828>] do_execve+0x15b/0x1f3
[42949375.810000] 09c83ee8:  [<0805a7c1>] execve1+0x2a/0x54
[42949375.810000] 09c83f0c:  [<0805a852>] sys_execve+0x26/0x3c
[42949375.810000 ] 09c83f28:  [<0805ef26>] handle_syscall+0x86/0xa0
[42949375.810000] 09c83f74:  [<0806d3e5>] handle_trap+0xbe/0xc7
[42949375.810000] 09c83f90:  [<0806d7d5>] userspace+0x123/0x166
[42949375.810000 ] 09c83fdc:  [<0805ec65>] fork_handler+0x74/0x7c
[42949375.810000] 09c83ffc:  [<00000000>] _sinittext+0xf7fb7f0c/0x18


--
regards,
Yang Sheng