[Xen-devel] Creating a domU on x86 crashes dom0

[David F Barrera <dfbp@xxxxxxxxxx>]

The x86 build is broken. DomU will not boot on both RHEL 4 and SLES 9,
and dom0 crashes. 

changeset:   6375:603f55eaa690ef8d47e54bdb57e20fb3266d8f56
tag:         tip
user:        kaf24@xxxxxxxxxxxxxxxxxxxx
date:        Wed Aug 24 05:48:24 2005
summary:     Initialise syscall32 vsyscall page early, as it may be
needed

On the RHEL 4 box, dom0 did not crash the first time that I attempted to
create a domU. The log showed this:

Red Hat Enterprise Linux AS release 4 (Nahant)
Kernel 2.6.12-xen0 on an i686

lamb5 login: smp_send_stop disable_local_APIC
(XEN) DOM0: (file=mm.c, line=2466) PTE entry 11ed5 for address d0865000
doesn't match frame 11ede
(XEN) (file=grant_table.c, line=1071) Grant unref rd(1) ld(0) frm(11ed5)
flgs(0).

Red Hat Enterprise Linux AS release 4 (Nahant)
Kernel 2.6.12-xen0 on an i686

lamb5 login:
--

On the second attempt to create a domU, dom0 crashed:

Red Hat Enterprise Linux AS release 4 (Nahant)
Kernel 2.6.12-xen0 on an i686

lamb5 login: (XEN) (file=grant_table.c, line=1152) Bad flags (5) or dom
(0). (NB. expected dom 0)
(XEN) gnttab_donate: gnttab_prepare_for_transfer fails
kernel BUG at drivers/xen/netback/netback.c:349 (net_rx_action)!
[<c030b1dc>] net_rx_action+0x4ac/0x540
[<c045ad06>] __br_forward+0x66/0x80
[<c045aba0>] br_forward_finish+0x0/0x80
[<c045aee8>] br_flood_forward+0x28/0x30
[<c045aca0>] __br_forward+0x0/0x80
[<c045ba11>] br_handle_frame_finish+0x141/0x160
[<c045fb88>] br_nf_pre_routing_finish+0x178/0x420
[<c045b8d0>] br_handle_frame_finish+0x0/0x160
[<c04305d1>] tcp_ack_saw_tstamp+0x21/0x60
[<c0430e2f>] tcp_clean_rtx_queue+0x41f/0x450
[<c011cc3c>] recalc_task_prio+0x8c/0x160
[<c041798d>] nf_iterate+0x5d/0x90
[<c045fa10>] br_nf_pre_routing_finish+0x0/0x420
[<c045fa10>] br_nf_pre_routing_finish+0x0/0x420
[<c0417dee>] nf_hook_slow+0x7e/0x140
[<c045fa10>] br_nf_pre_routing_finish+0x0/0x420
[<c045b8d0>] br_handle_frame_finish+0x0/0x160
[<c04604c9>] br_nf_pre_routing+0x339/0x4b0
[<c045fa10>] br_nf_pre_routing_finish+0x0/0x420
[<c041798d>] nf_iterate+0x5d/0x90
[<c045b8d0>] br_handle_frame_finish+0x0/0x160
[<c045b8d0>] br_handle_frame_finish+0x0/0x160
[<c0417dee>] nf_hook_slow+0x7e/0x140
[<c04056c1>] kfree_skbmem+0x21/0x30
[<c0421236>] ip_rcv+0x86/0x4f0
[<c045b8d0>] br_handle_frame_finish+0x0/0x160
[<c040c54d>] netif_receive_skb+0x20d/0x260
[<c040c65b>] process_backlog+0xbb/0x190
[<c0127cb2>] tasklet_action+0x72/0x120
[<c01277f9>] __do_softirq+0x69/0x100
[<c0127915>] do_softirq+0x85/0xa0
[<c01279f5>] irq_exit+0x35/0x40
[<c010ee32>] do_IRQ+0x22/0x30
[<c01055c6>] evtchn_do_upcall+0x66/0xa0
[<c010a218>] hypervisor_callback+0x2c/0x34
[<c0107ad8>] xen_idle+0x38/0x90
[<c0107b65>] cpu_idle+0x35/0x50
[<c0104023>] rest_init+0x23/0x40
[<c0104080>] init+0x0/0x120
[<c057e8da>] start_kernel+0x1ba/0x210
[<c057e390>] unknown_bootoption+0x0/0x240
Kernel panic - not syncing: BUG!
(XEN) Domain 0 shutdown: rebooting machine.

DomU log:

[...]
    lo        IP address: 127.0.0.1/8
done
    eth0
    eth0      IP address: 9.3.189.177/24
done
Setting up service network  .  .  .  .  .  .  .  .  .  .  .  .  .  .
done.
Assertion 'ref != -ENOSPC' failed, line 275, file
drivers/xen/blkfront/blkfront.c<1>Unable to handle kernel NULL pointer
dereference at virtual address 00000000 printing eip:
c0256bec
0d8d8000 -> *pde = 00000000:11e95001
0d8da000 -> *pme = 00000000:00000000


>From SLES 9 box:
-----------------
[...]

    lo        IP address: 127.0.0.1/8
done
    eth0
    eth0      IP address: 9.3.189.205/24
done
Setting up service network  .  .  .  .  .  .  .  .  .  .  .  .  .  .
done.
Starting syslog servicesend_request: I/O error, dev sda9, sector 984408
Assertion 'ref != -ENOSPC' failed, line 275, file
drivers/xen/blkfront/blkfront.c<1>Unable to handle kernel NULL pointer
dereference at virtual address 00000000 printing eip:
c0252ecc
*pde = ma 00000000 pa 55555000
Oops: 0002 [#1]
PREEMPT SMP
Modules linked in:
CPU:    0
EIP:    0061:[<c0252ecc>]    Not tainted VLI
EFLAGS: 00010246   (2.6.12-xenU)
EIP is at blkif_queue_request+0x22c/0x300
eax: 00000000   ebx: 1f513000   ecx: 00000000   edx: 00000001
esi: 00000000   edi: ffffffe4   ebp: 00000007   esp: cfcc9d90
ds: 007b   es: 007b   ss: 0069
Process kjournald (pid: 571, threadinfo=cfcc8000 task=c1302a40)
Stack: c03001e4 c02feea7 00000113 c030020c 0000002a 0000000e 00000000
c12d5980


-- 
Regards,

David F Barrera
Linux Technology Center
Systems and Technology Group, IBM

"The wisest men follow their own direction. "
                                                        Euripides


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