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    Subject[patch] uml: better bugs
    Get UML to use the generic bug support rather than arch specific one.

    If I insert an artificial bug right before loading init, I get this:

    Kernel panic - not syncing: Kernel mode signal 4

    EIP: 0023:[<0819d501>] CPU: 0 Not tainted ESP: 002b:f7fd4fbc EFLAGS: 00000246
    Not tainted
    EAX: 00000000 EBX: 00007870 ECX: 00000013 EDX: 00007870
    ESI: 0000786d EDI: 00000011 EBP: f7fd4fd8 DS: 002b ES: 002b
    08273bec: [<0806e814>] show_regs+0x104/0x106
    08273c08: [<08058927>] panic_exit+0x2c/0x4b
    08273c18: [<08080ee7>] notifier_call_chain+0x32/0x5b
    08273c38: [<08080fbd>] __atomic_notifier_call_chain+0x30/0x32
    08273c54: [<08080fee>] atomic_notifier_call_chain+0x2f/0x31
    08273c70: [<08073b88>] panic+0x75/0x131
    08273c94: [<080586c7>] relay_signal+0x87/0x95
    08273cb0: [<0806b9ee>] sig_handler_common_skas+0x9e/0x120
    08273cd8: [<08067738>] sig_handler+0x28/0x4f
    08273cec: [<0806792e>] handle_signal+0x53/0x89
    08273d0c: [<08069f60>] hard_handler+0x18/0x28
    08273d1c: [<ffffe500>] transitions+0xf7d598b8/0xfffffff0


    With this patch in place, this is how it looks:

    BUG: failure at init/main.c:779/init_post()!
    Kernel panic - not syncing: BUG!

    EIP: 0023:[<081a65d1>] CPU: 0 Not tainted ESP: 002b:f7f0dfbc EFLAGS: 00000246
    Not tainted
    EAX: 00000000 EBX: 000069db ECX: 00000013 EDX: 000069db
    ESI: 000069d8 EDI: 00000011 EBP: f7f0dfd8 DS: 002b ES: 002b
    098efedc: [<0806e9a4>] show_regs+0x104/0x106
    098efef8: [<080589c7>] panic_exit+0x2c/0x4b
    098eff08: [<080818d7>] notifier_call_chain+0x32/0x5b
    098eff28: [<080819ad>] __atomic_notifier_call_chain+0x30/0x32
    098eff44: [<080819de>] atomic_notifier_call_chain+0x2f/0x31
    098eff60: [<08073f28>] panic+0x75/0x131
    098eff84: [<080541d5>] init_post+0xcd/0xe8
    098eff9c: [<08048ad4>] kernel_init+0x8e/0x9a
    098effb4: [<08066dee>] run_kernel_thread+0x41/0x53
    098effe0: [<08058e75>] new_thread_handler+0x62/0x8b
    098efffc: [<a55a5a5a>] 0xa55a5a5a


    Signed-off-by: Nick Piggin <npiggin@suse.de>

    Index: linux-2.6/include/asm-um/bug.h
    ===================================================================
    --- linux-2.6.orig/include/asm-um/bug.h 2007-06-04 22:24:19.000000000 +1000
    +++ linux-2.6/include/asm-um/bug.h 2007-06-04 22:24:24.000000000 +1000
    @@ -1,6 +1,6 @@
    #ifndef __UM_BUG_H
    #define __UM_BUG_H

    -#include <asm/arch/bug.h>
    +#include <asm-generic/bug.h>

    #endif
    -
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