From: jonathan li <spiderium@gmail.com>
To: linux-kernel@vger.kernel.org
Subject: oops on kernel-2.6-0
Date: Mon, 25 Oct 2004 17:11:00 +0800 [thread overview]
Message-ID: <14dd4ead04102502115a9903d8@mail.gmail.com> (raw)
hi, all
I want to use oprofile, but after the following steps,
# opcontrol --setup --vmlinux=/boot/vmlinux
# opcontrol --start
I get oops as follows:
Unable to handle kernel paging request at virtual address ffffd340
printing eip:
e09a7867
*pde = 00002067
Oops: 0000 [#1]
CPU: 0
EIP: 0060:[<e09a7867>] Tainted: P VLI
EFLAGS: 00010246
EIP is at nmi_cpu_setup+0x27/0x40 [oprofile]
eax: e09ab844 ebx: 00000000 ecx: 00000000 edx: ffffffff
esi: e09aaa00 edi: d6995684 ebp: dfe34ac0 esp: d29d7f24
ds: 007b es: 007b ss: 0068
Process oprofiled (pid: 1828, threadinfo=d29d6000 task=d306b900)
Stack: e09a789a 00000000 e09a6039 ffffffea d2fbaa80 e09a6b8e d2fbaa80 d34f6380
c015155c d34f6380 d2fbaa80 00000000 dd541000 00000000 d29d6000 c0151450
d2e0e280 dfe34ac0 00000000 d2e0e280 dfe34ac0 dfe37f80 d34fcd00 08050fc8
Call Trace:
[<e09a789a>] nmi_setup+0x1a/0x40 [oprofile]
[<e09a6039>] oprofile_setup+0x39/0xa0 [oprofile]
[<e09a6b8e>] event_buffer_open+0x3e/0x70 [oprofile]
[<c015155c>] dentry_open+0xfc/0x190
[<c0151450>] filp_open+0x50/0x60
[<c01517eb>] sys_open+0x3b/0x70
[<c010af47>] syscall_call+0x7/0xb
Code: 75 d6 eb cf a1 40 b8 9a e0 68 44 b8 9a e0 ff 50 08 68 44 b8 9a
e0 e8 d9 fe ff ff 58 a1 40 b8 9a e0 5a 68 44 b8 9a e0 ff 50 0c 58 <a1>
40 d3 ff ff c7 05 40 d3 ff ff 00 04 00 00 a3 4c b8 9a e0 c3
It seems that kernel was panic in this function:
static void nmi_cpu_setup(void * dummy)
{
int cpu = smp_processor_id();
struct op_msrs * msrs = &cpu_msrs[cpu];
model->fill_in_addresses(msrs);
nmi_save_registers(msrs);
spin_lock(&oprofilefs_lock);
model->setup_ctrs(msrs);
spin_unlock(&oprofilefs_lock);
saved_lvtpc[cpu] = apic_read(APIC_LVTPC);
apic_write(APIC_LVTPC, APIC_DM_NMI);
}
the result of objdump -d oprofile.ko as follows:
00001840 <nmi_cpu_setup>:
1840: a1 40 02 00 00 mov 0x240,%eax
1845: 68 44 02 00 00 push $0x244
184a: ff 50 08 call *0x8(%eax)
184d: 68 44 02 00 00 push $0x244
1852: e8 d9 fe ff ff call 1730 <nmi_save_registers>
1857: 58 pop %eax
1858: a1 40 02 00 00 mov 0x240,%eax
185d: 5a pop %edx
185e: 68 44 02 00 00 push $0x244
1863: ff 50 0c call *0xc(%eax)
1866: 58 pop %eax
1867: a1 40 d3 ff ff mov 0xffffd340,%eax
186c: c7 05 40 d3 ff ff 00 movl $0x400,0xffffd340
1873: 04 00 00
1876: a3 4c 02 00 00 mov %eax,0x24c
187b: c3 ret
187c: 8d 74 26 00 lea 0x0(%esi,1),%esi
Why APIC_LVTPC get virtual address 0xffffd340? Anybody has
confront this question? please point me how to resolve this question?
reply other threads:[~2004-10-25 9:11 UTC|newest]
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