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08932a1983
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Nick Piggin 08932a1983 uml: use generic BUG 
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

[ jdike - added BUG_TABLE to linker script ]

Signed-off-by: Nick Piggin <npiggin@suse.de>
Signed-off-by: Jeff Dike <jdike@linux.intel.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2007-06-24 08:59:11 -07:00
..
acpi Pull osi-now into release branch 2007-06-02 01:02:09 -04:00
asm-alpha ALPHA: misc fixes 2007-06-01 08:18:29 -07:00
asm-arm [ARM] 4445/1: ANUBIS: Fix CPLD registers 2007-06-11 09:09:34 +01:00
asm-arm26 [ARM] use __used attribute 2007-05-30 13:15:06 +01:00
asm-avr32 [AVR32] Define ARCH_KMALLOC_MINALIGN to L1_CACHE_BYTES 2007-06-14 18:30:50 +02:00
asm-blackfin Blackfin arch: add proper const volatile to addr argument to the read functions 2007-06-21 11:34:16 +08:00
asm-cris
asm-frv frv: build fix 2007-06-07 17:00:25 -07:00
asm-generic Rework ptep_set_access_flags and fix sun4c 2007-06-16 13:16:16 -07:00
asm-h8300 h8300 trival patches 2007-06-01 08:18:29 -07:00
asm-i386 x86: Disable DAC on VIA bridges 2007-06-20 14:27:25 -07:00
asm-ia64 Rework ptep_set_access_flags and fix sun4c 2007-06-16 13:16:16 -07:00
asm-m32r m32r: __xchg() should be always_inline 2007-05-15 18:56:37 -07:00
asm-m68k m68k: discontinuous memory support 2007-05-31 07:58:14 -07:00
asm-m68knommu
asm-mips [MIPS] Don't drag a platform specific header into generic arch code. 2007-06-20 22:27:10 +01:00
asm-parisc [PARISC] Fix unwinder on 64-bit kernels 2007-06-21 17:46:21 -04:00
asm-powerpc Rework ptep_set_access_flags and fix sun4c 2007-06-16 13:16:16 -07:00
asm-ppc Rework ptep_set_access_flags and fix sun4c 2007-06-16 13:16:16 -07:00
asm-s390 [S390] Move psw_set_key. 2007-06-19 13:10:20 +02:00
asm-sh sh: Fix se73180 platform device registration. 2007-06-04 11:07:23 +09:00
asm-sh64 sh64: generic quicklist support. 2007-05-14 09:55:35 +09:00
asm-sparc Rework ptep_set_access_flags and fix sun4c 2007-06-16 13:16:16 -07:00
asm-sparc64 [SPARC64]: Fix args to sun4v_ldc_revoke(). 2007-06-13 00:01:27 -07:00
asm-um uml: use generic BUG 2007-06-24 08:59:11 -07:00
asm-v850
asm-x86_64 x86_64: Fix eventd/timerfd syscalls 2007-06-20 14:27:25 -07:00
asm-xtensa Xtensa: use asm-generic/fcntl.h 2007-05-31 20:18:25 -07:00
crypto
keys
linux SM501: Check SM501 ID register on initialisation 2007-06-24 08:59:11 -07:00
math-emu
media
mtd
net [SCTP] Flag a pmtu change request 2007-06-13 20:44:42 +00:00
pcmcia
rdma Merge branch 'for-linus' of master.kernel.org:/pub/scm/linux/kernel/git/roland/infiniband 2007-05-21 16:19:32 -07:00
rxrpc
scsi
sound [ALSA] version 1.0.14 2007-05-31 11:03:27 +02:00
video
Kbuild