Re: Crash during vmcore_init

From: Tim Hartrick <tim@edgecast.com>
To: WANG Cong <xiyou.wangcong@gmail.com>
Cc: kexec@lists.infradead.org
Subject: Re: Crash during vmcore_init
Date: Mon, 14 Nov 2011 10:50:50 -0800	[thread overview]
Message-ID: <1321296650.2066.17.camel@boudreau> (raw)
In-Reply-To: <j9r5m5$b18$1@dough.gmane.org>

Wang,

Thanks for taking the time to look at this.

Here is the result from a 2.6.38 kernel used as base kernel and
crashkernel:

[    1.314762] WARNING:
at /build/buildd/linux-2.6.38/arch/x86/mm/ioremap.c:83 __ioremap_caller
+0x350/0x3d0()
[    1.324394] Hardware name: PowerEdge R710
[    1.328390] Modules linked in:
[    1.331443] Pid: 1, comm: swapper Not tainted 2.6.38-8-server
#42-Ubuntu
[    1.338128] Call Trace:
[    1.340572]  [<ffffffff81065d1f>] ? warn_slowpath_common+0x7f/0xc0
[    1.346741]  [<ffffffff81065d7a>] ? warn_slowpath_null+0x1a/0x20
[    1.352729]  [<ffffffff81040eb0>] ? __ioremap_caller+0x350/0x3d0
[    1.358726]  [<ffffffff810d8575>] ? call_rcu_sched+0x15/0x20
[    1.364375]  [<ffffffff8103452e>] ? copy_oldmem_page+0x4e/0xc0
[    1.370194]  [<ffffffff8113c39e>] ? __purge_vmap_area_lazy+0xfe/0x1f0
[    1.376622]  [<ffffffff81040f64>] ? ioremap_cache+0x14/0x20
[    1.382176]  [<ffffffff8103452e>] ? copy_oldmem_page+0x4e/0xc0
[    1.388002]  [<ffffffff811cad0a>] ? read_from_oldmem+0x7a/0xb0
[    1.393827]  [<ffffffff81b099a0>] ? merge_note_headers_elf64.clone.3
+0x6c/0x214
[    1.401115]  [<ffffffff8103456a>] ? copy_oldmem_page+0x8a/0xc0
[    1.406936]  [<ffffffff811cad0a>] ? read_from_oldmem+0x7a/0xb0
[    1.412752]  [<ffffffff81b09e79>] ? vmcore_init+0x0/0x73
[    1.418051]  [<ffffffff81b09c52>] ? parse_crash_elf64_headers
+0x10a/0x211
[    1.424825]  [<ffffffff8103456a>] ? copy_oldmem_page+0x8a/0xc0
[    1.430640]  [<ffffffff81b09e79>] ? vmcore_init+0x0/0x73
[    1.435940]  [<ffffffff81b09dd4>] ? parse_crash_elf_headers
+0x7b/0x120
[    1.442450]  [<ffffffff81b09e9c>] ? vmcore_init+0x23/0x73
[    1.447839]  [<ffffffff81002175>] ? do_one_initcall+0x45/0x190
[    1.453661]  [<ffffffff81ae1dff>] ? kernel_init+0x169/0x1f3
[    1.459218]  [<ffffffff8100cde4>] ? kernel_thread_helper+0x4/0x10
[    1.465298]  [<ffffffff81ae1c96>] ? kernel_init+0x0/0x1f3
[    1.470680]  [<ffffffff8100cde0>] ? kernel_thread_helper+0x0/0x10

The command line for the crashkernel:

[    0.000000] Command line: BOOT_IMAGE=/vmlinuz-2.6.38-8-server
root=UUID=ea7a5a27-d58f-469f-a19c-3e65b69587f6 ro console=ttyS0,115200n8
irqpoll maxcpus=1 nousb memmap=exactmap memmap=640K@0K
memmap=261484K@623232K elfcorehdr=884716K memmap=252K#2087484K

The contents of /proc/iomem while running the base kernel:

00000000-0000ffff : reserved
00010000-0009ffff : System RAM
000a0000-000bffff : PCI Bus 0000:00
00100000-7f678fff : System RAM
  01000000-015e1d6c : Kernel code
  015e1d6d-01aca17f : Kernel data
  01bae000-01d03fff : Kernel bss
  26000000-35ffffff : Crash kernel
7f679000-7f68efff : reserved
  7f679000-7f679003 : APEI ERST
  7f67900c-7f679016 : APEI ERST
  7f679060-7f67906b : APEI ERST
  7f68d000-7f68efff : APEI ERST
7f68f000-7f6cdfff : ACPI Tables
7f6ce000-7fffffff : reserved
80000000-fdffffff : PCI Bus 0000:00
  d5800000-d5ffffff : PCI Bus 0000:08
    d5800000-d5ffffff : 0000:08:03.0
  d6000000-d9ffffff : PCI Bus 0000:01
    d6000000-d7ffffff : 0000:01:00.0
      d6000000-d7ffffff : bnx2
    d8000000-d9ffffff : 0000:01:00.1
      d8000000-d9ffffff : bnx2
  da000000-ddffffff : PCI Bus 0000:02
    da000000-dbffffff : 0000:02:00.0
      da000000-dbffffff : bnx2
    dc000000-ddffffff : 0000:02:00.1
      dc000000-ddffffff : bnx2
  de000000-deffffff : PCI Bus 0000:08
    de000000-de00ffff : 0000:08:03.0
    de7fc000-de7fffff : 0000:08:03.0
    de800000-deffffff : 0000:08:03.0
  df0ff800-df0ffbff : 0000:00:1a.7
    df0ff800-df0ffbff : ehci_hcd
  df0ffc00-df0fffff : 0000:00:1d.7
    df0ffc00-df0fffff : ehci_hcd
  df100000-df2fffff : PCI Bus 0000:03
    df100000-df1fffff : 0000:03:00.0
    df2ec000-df2effff : 0000:03:00.0
      df2ec000-df2effff : mpt
    df2f0000-df2fffff : 0000:03:00.0
      df2f0000-df2fffff : mpt
  e0000000-efffffff : PCI MMCONFIG 0000 [bus 00-ff]
    e0000000-efffffff : reserved
      e0000000-efffffff : pnp 00:09
fe000000-ffffffff : reserved
  fec00000-fec003ff : IOAPIC 0
  fec80000-fec803ff : IOAPIC 1
  fed00000-fed003ff : HPET 0
  fed40000-fed44fff : PCI Bus 0000:00
  fed90000-fed91fff : pnp 00:0b
  fee00000-fee00fff : Local APIC
100000000-c7fffffff : System RAM

tim

On Mon, 2011-11-14 at 13:39 +0000, WANG Cong wrote:
> On Tue, 11 Oct 2011 16:39:05 -0700, Tim Hartrick wrote:
> 
> > Kexec,
> > 
> > I have been experiencing the crash below on Ubuntu 10.04 running
> > 2.6.32-34-server and 2.6.38-8-server as the crashkernel on X86_64. The
> > tools are:
> > 
> > kexec-tools	1:2.0.2-1ubuntu3
> > makedumpfile	1.3.7-2
> > kdump-tools	1.3.7-2
> > 
> > I would be interested to know if this is a known problem and if so
> > whether or not there is a patch in the pipeline to correct the problem.
> > 
> > I will be happy to provide any other details that are required including
> > debug builds if necessary.
> ....
> > 
> > [    1.322100] ioremap: invalid physical address db74000000000000 [   
> > 1.327919] ------------[ cut here ]------------ [    1.332530] WARNING:
> > at /build/buildd/linux-2.6.32/arch/x86/mm/ioremap.c:120 __ioremap_caller
> > +0x360/0x3d0()
> 
> This probably means that kexec-tools passed some incorrect
> kernel parameter to the second kernel.
> 
> So, what is the cmdline of your second kernel? And what is your
> /proc/iomem of your first kernel?
> 
> Cheers.
> 
> 
> _______________________________________________
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> kexec@lists.infradead.org
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