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Re: [Xen-devel] Re: 2.6.37-rc1 mainline domU - BUG: unable to handle kernel paging request


  • To: Konrad Rzeszutek Wilk <konrad.wilk@xxxxxxxxxx>
  • From: Boris Derzhavets <bderzhavets@xxxxxxxxx>
  • Date: Thu, 11 Nov 2010 08:29:38 -0800 (PST)
  • Cc: Jeremy Fitzhardinge <jeremy@xxxxxxxx>, xen-devel@xxxxxxxxxxxxxxxxxxx, Bruce Edge <bruce.edge@xxxxxxxxx>
  • Delivery-date: Thu, 11 Nov 2010 08:31:09 -0800
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> Boris, what version of Linux kernel worked for you as PV DomU? 2.6.36? 2.6.35?

Konrad,

The version is 2.6.37-rc1,  been built from upstream source.

Boris.

--- On Thu, 11/11/10, Konrad Rzeszutek Wilk <konrad.wilk@xxxxxxxxxx> wrote:

From: Konrad Rzeszutek Wilk <konrad.wilk@xxxxxxxxxx>
Subject: Re: [Xen-devel] Re: 2.6.37-rc1 mainline domU - BUG: unable to handle kernel paging request
To: "Boris Derzhavets" <bderzhavets@xxxxxxxxx>
Cc: "Jeremy Fitzhardinge" <jeremy@xxxxxxxx>, xen-devel@xxxxxxxxxxxxxxxxxxx, "Bruce Edge" <bruce.edge@xxxxxxxxx>
Date: Thursday, November 11, 2010, 11:09 AM

On Thu, Nov 11, 2010 at 04:08:03AM -0800, Boris Derzhavets wrote:
> Now reproduced :-
>
> root@boris-HVM-domU:~# scp  1.log 192.168.1.12:/home/boris/ubuntu
> BUG: unable to handle kernel paging request at ffff88000e676930
> IP: [<ffffffff810069c3>] xen_set_pmd+0x24/0x44
> PGD 1a04067 PUD 1a08067 PMD ee73067 PTE 801000000e676065
> Oops: 0003 [#1] SMP
> last sysfs file: /sys/devices/virtual/bdi/0:22/uevent
> CPU 0
> Modules linked in: nfs fscache parport_pc ppdev nfsd lockd nfs_acl auth_rpcgss sunrpc exportfs ipv6 lp parport
>
> Pid: 3534, comm: scp Not tainted 2.6.37-rc1 #1 /

Yikes. So no PCI passthrough, just a normal PV DomU.

Boris, what version of Linux kernel worked for you as PV DomU? 2.6.36? 2.6.35?

> RIP: e030:[<ffffffff810069c3>]  [<ffffffff810069c3>] xen_set_pmd+0x24/0x44
> RSP: e02b:ffff88006e697b18  EFLAGS: 00010246
> RAX: 0000000000000000 RBX: ffff88000e676930 RCX: ffffc00000000f98
> RDX: ffffea0000000000 RSI: 0000000000000000 RDI: ffff88000e676930
> RBP: ffff88006e697b28 R08: 00007fff9d120000 R09: ffff88007ffc80a0
> R10: 0000000000000000 R11: ffff88006e697ae8 R12: 0000000000000000
> R13: ffff88007ffcb140 R14: ffff88000e676930 R15: ffff88006f08d7f8
> FS:  00007fa525896700(0000) GS:ffff88007ffbd000(0000) knlGS:0000000000000000
> CS:  e033 DS: 0000 ES: 0000 CR0: 000000008005003b
> CR2: ffff88000e676930 CR3: 0000000077b0f000 CR4: 0000000000002660
> DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
> DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000400
> Process scp (pid: 3534, threadinfo ffff88006e696000, task ffff88007a32c2c0)
> Stack:
>  00007fa524e00000 00007fa525b37000 ffff88006e697be8 ffffffff810dc4a4
>  ffff88007a26ac88 ffff88006e690298 ffff88007a26ac78 00007fa524a00000
>  00007f8000000000 00007fff80000000 00007fa525b36fff 00007fa525b36fff
> Call Trace:
>  [<ffffffff810dc4a4>] free_pgd_range+0x213/0x397
>  [<ffffffff810dc6cc>] free_pgtables+0xa4/0xc7
>  [<ffffffff810dfd82>] exit_mmap+0xf2/0x12a
>  [<ffffffff8104a7c5>] mmput+0x5e/0xd1
>  [<ffffffff8110694b>] flush_old_exec+0x526/0x600
>  [<ffffffff8113e006>] load_elf_binary+0x2dc/0x1752
>  [<ffffffff8113b687>] ? load_misc_binary+0x6e/0x367
>  [<ffffffff811dcee4>] ? ima_must_measure+0x21/0x2b
>  [<ffffffff811dc7d6>] ? process_measurement+0x56/0xe4
>  [<ffffffff81106195>] search_binary_handler+0xbb/0x24d
>  [<ffffffff8113dd2a>] ? load_elf_binary+0x0/0x1752
>  [<ffffffff8110785d>] do_execve+0x1c1/0x2ae
>  [<ffffffff810119e5>] sys_execve+0x3e/0x55
>  [<ffffffff8100af9c>] stub_execve+0x6c/0xc0
> Code: 48 83 c4 18 5b c9 c3 55 48 89 e5 41 54 49 89 f4 53 48 89 fb e8 b5 e4 ff ff 48 89 df ff 05 3e 55 c3 00 e8 d5 dd ff ff 84 c0 75 05 <4c> 89 23 eb 16 e8 99 e4 ff ff 4c 89 e6 48 89 df ff 05 23 55 c3
> RIP  [<ffffffff810069c3>] xen_set_pmd+0x24/0x44
>  RSP <ffff88006e697b18>
> CR2: ffff88000e676930
> ---[ end trace 073da74f4ce02315 ]---
> lost connection

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