diff options
| author | Ingo Molnar <mingo@elte.hu> | 2009-08-03 08:47:07 +0200 |
|---|---|---|
| committer | Ingo Molnar <mingo@elte.hu> | 2009-08-08 17:47:12 +0200 |
| commit | 72c4d8530244264317a662de9a55cc47e6c8e9df (patch) | |
| tree | a31ea2fe1cd27c727eee5d511e5e63d3c522cf4c | |
| parent | 1e5de18278e6862f4198412b5059a03770fa816a (diff) | |
x86: Introduce GDT_ENTRY_INIT(), fix APM
This crash:
[ 0.891983] calling cache_sysfs_init+0x0/0x1ee @ 1
[ 0.897251] initcall cache_sysfs_init+0x0/0x1ee returned 0 after 405 usecs
[ 0.904019] calling mce_init_device+0x0/0x242 @ 1
[ 0.909124] initcall mce_init_device+0x0/0x242 returned 0 after 347 usecs
[ 0.915815] calling apm_init+0x0/0x38d @ 1
[ 0.919967] apm: BIOS version 1.2 Flags 0x07 (Driver version 1.16ac)
[ 0.926813] general protection fault: 0000 [#1]
[ 0.927269] last sysfs file:
[ 0.927269] Modules linked in:
[ 0.927269]
[ 0.927269] Pid: 271, comm: kapmd Not tainted (2.6.31-rc3-00100-gd520da1-dirty #311) System Product Name
[ 0.927269] EIP: 00c0:[<000082b2>] EFLAGS: 00010002 CPU: 0
[ 0.927269] EIP is at 0x82b2
[ 0.927269] EAX: 0000530e EBX: 00000000 ECX: 00000102 EDX: 00000000
[ 0.927269] ESI: 00000000 EDI: f6a4bf44 EBP: 67890000 ESP: f6a4beec
[ 0.927269] DS: 00c8 ES: 0000 FS: 0000 GS: 0000 SS: 0068
[ 0.927269] Process kapmd (pid: 271, ti=f6a4a000 task=f7142280 task.ti=f6a4a000)
[ 0.927269] Stack:
[ 0.927269] 0000828d 02160000 00b88092 f6a4bf3c c102a63d 00000060 f6a4bf3c f6a4bf44
[ 0.927269] <0> 0000007b 0000007b 00000000 00000000 00000000 00000000 560aae9e 00000000
[ 0.927269] <0> 00000200 f705fd74 00000000 c102af70 f6a4bf60 c102a6ec 0000530e 00000000
[ 0.927269] Call Trace:
[ 0.927269] [<c102a63d>] ? __apm_bios_call_simple+0x7d/0x110
[ 0.927269] [<c102af70>] ? apm+0x0/0x6a0
[ 0.927269] [<c102a6ec>] ? apm_bios_call_simple+0x1c/0x50
[ 0.927269] [<c102b3f5>] ? apm+0x485/0x6a0
[ 0.927269] [<c1038e7a>] ? finish_task_switch+0x2a/0xb0
[ 0.927269] [<c164a69e>] ? schedule+0x31e/0x480
[ 0.927269] [<c102af70>] ? apm+0x0/0x6a0
[ 0.927269] [<c102af70>] ? apm+0x0/0x6a0
[ 0.927269] [<c1052654>] ? kthread+0x74/0x80
[ 0.927269] [<c10525e0>] ? kthread+0x0/0x80
[ 0.927269] [<c101d627>] ? kernel_thread_helper+0x7/0x10
[ 0.927269] Code: Bad EIP value.
[ 0.927269] EIP: [<000082b2>] 0x82b2 SS:ESP 0068:f6a4beec
[ 0.927269] ---[ end trace a7919e7f17c0a725 ]---
[ 0.927269] Kernel panic - not syncing: Fatal exception
[ 0.927269] Pid: 271, comm: kapmd Tainted: G D 2.6.31-rc3-00100-gd520da1-dirty #311
Is caused by an incorrect GDT_ENTRY_INIT() conversion in the apm
code, as noticed by hpa.
Reported-by: Ingo Molnar <mingo@elte.hu>
Noticed-by: "H. Peter Anvin" <hpa@zytor.com>
Signed-off-by: Akinobu Mita <akinobu.mita@gmail.com>
LKML-Reference: <20090808094905.GA2954@localhost.localdomain>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
| -rw-r--r-- | arch/x86/kernel/cpu/common.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/arch/x86/kernel/cpu/common.c b/arch/x86/kernel/cpu/common.c index 8c9bc287f8fb..b5764a269645 100644 --- a/arch/x86/kernel/cpu/common.c +++ b/arch/x86/kernel/cpu/common.c @@ -106,7 +106,7 @@ DEFINE_PER_CPU_PAGE_ALIGNED(struct gdt_page, gdt_page) = { .gdt = { /* 16-bit code */ [GDT_ENTRY_APMBIOS_BASE+1] = GDT_ENTRY_INIT(0x009a, 0, 0xffff), /* data */ - [GDT_ENTRY_APMBIOS_BASE+2] = GDT_ENTRY_INIT(0x409a, 0, 0xffff), + [GDT_ENTRY_APMBIOS_BASE+2] = GDT_ENTRY_INIT(0x4092, 0, 0xffff), [GDT_ENTRY_ESPFIX_SS] = GDT_ENTRY_INIT(0xc092, 0, 0xfffff), [GDT_ENTRY_PERCPU] = GDT_ENTRY_INIT(0xc092, 0, 0xfffff), |