[Xen-devel] Xen 4.2.1, Linux 3.3.4 kernel crash

[Sam Mulvey <sam@xxxxxxxxxxxxxxxxxxxx>]

Hey folks...

This is with the same packages and such that I've been work on with Arch, and I 
encountered an odd crash.   If I need to move this thread to Xen-users or 
whatnot, apologies and please let me know.

The packages that I've been working with functioned great in the desktop VM, 
and worked wonderfully in PV and HVM on my test hardware (an HP server with 
Intel Xeons), but crashes right out of the gate on my production server (Tyan 
motherboard with Opteron 8356s).   When I move the kernel back to a 2.6.32.18 
pvops kernel I had been using, I can boot and run VMs without trouble.

Incidentally, I can now boot as many VMs as I like as long as the memory holds 
out, so the initial trouble that got all of this started looks like it's been 
fixed.


Everything looks normal until Xen hands off to the kernel, then I get this:

[    0.000000] Cannot find 20480 bytes in node 1
[    0.000000] BUG: unable to handle kernel NULL pointer dereference at         
  (null)
[    0.000000] IP: [<ffffffff818d5704>] __alloc_bootmem_node+0x72/0x99
[    0.000000] PGD 0 
[    0.000000] Oops: 0000 [#1] PREEMPT SMP 
[    0.000000] CPU 0 
[    0.000000] Modules linked in:
[    0.000000] 
[    0.000000] Pid: 0, comm: swapper Not tainted 3.3.4-1-ARCH #1 empty 
empty/S3992
[    0.000000] RIP: e030:[<ffffffff818d5704>]  [<ffffffff818d5704>] 
__alloc_bootmem_node+0x72/0x99
[    0.000000] RSP: e02b:ffffffff81801de8  EFLAGS: 00010046
[    0.000000] RAX: 0000000000000000 RBX: 0000000000000378 RCX: 0000000000000000
[    0.000000] RDX: 0000000000000040 RSI: 0000000000000378 RDI: 0000000000000000
[    0.000000] RBP: ffffffff81801e08 R08: 0000000000000000 R09: ffffffff81801d98
[    0.000000] R10: ffffffff81801d88 R11: ffffffff81801d90 R12: 0000000000000040
[    0.000000] R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000001
[    0.000000] FS:  0000000000000000(0000) GS:ffffffff8189f000(0000) 
knlGS:0000000000000000
[    0.000000] CS:  e033 DS: 0000 ES: 0000 CR0: 0000000080050033
[    0.000000] CR2: 0000000000000000 CR3: 0000000001805000 CR4: 0000000000000660
[    0.000000] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[    0.000000] DR3: 0000000000000000 DR6: 0000000000000000 DR7: 0000000000000000
[    0.000000] Process swapper (pid: 0, threadinfo ffffffff81800000, task 
ffffffff8180d020)
[    0.000000] Stack:
[    0.000000]  0000000000080000 0000000000000378 000000000000003c 
ffff88003fbfa000
[    0.000000]  ffffffff81801e68 ffffffff818d63f0 ffffffff81801e48 
00000001818d53bc
[    0.000000]  ffff88003fbf9fe0 0000000000000000 000000000282c000 
ffff88003fbfa000
[    0.000000] Call Trace:
[    0.000000]  [<ffffffff818d63f0>] sparse_early_usemaps_alloc_node+0x63/0x1c4
[    0.000000]  [<ffffffff818d677b>] sparse_init+0xf8/0x2c8
[    0.000000]  [<ffffffff818ca4d2>] paging_init+0x13/0x22
[    0.000000]  [<ffffffff818b9dca>] setup_arch+0x9f2/0xac0
[    0.000000]  [<ffffffff814562d2>] ? printk+0x41/0x43
[    0.000000]  [<ffffffff818b491b>] start_kernel+0xd4/0x3d1
[    0.000000]  [<ffffffff818b4346>] x86_64_start_reservations+0x131/0x135
[    0.000000]  [<ffffffff818b69c9>] xen_start_kernel+0x598/0x59f
[    0.000000] Code: 4c 89 e9 4c 89 e2 48 89 de bf 40 00 00 00 e8 0f fc ff ff 
eb 34 41 8b 96 a0 40 00 00 be 00 80 00 00 48 89 d 
[    0.000000] RIP  [<ffffffff818d5704>] __alloc_bootmem_node+0x72/0x99
[    0.000000]  RSP <ffffffff81801de8>
[    0.000000] CR2: 0000000000000000
[    0.000000] ---[ end trace a7919e7f17c0a725 ]---
[    0.000000] Kernel panic - not syncing: Attempted to kill the idle task!
(XEN) Domain 0 crashed: rebooting machine in 5 seconds.

----

This is the same kernel I've been using in the two testing machines.    The 
server is, incidentally, the same server that houses the mail server I'm on, so 
I'm cc'ing a gmail address, if you could include it in your replies, I'd 
appreciate it.

Thanks!

-- 
Sam Mulvey
Tacoma Telematics
sam@xxxxxxxxxxxxxxxxxxxx
(253) 883-3030 x110





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