[Fedora-xen] RHEL4 DomU Update Problem

[Jim Klein]

Thanks for the info - I'll look for the update. I still get the panic, regardless of memory settings. 


----- Original Message ----- 
From: "Chris Lalancette" <clalance at redhat.com> 
To: "Jim Klein" <jklein at saugus.k12.ca.us> 
Cc: "fedora-xen" <fedora-xen at redhat.com> 
Sent: Wednesday, October 31, 2007 9:25:52 AM (GMT-0800) America/Los_Angeles 
Subject: Re: [Fedora-xen] RHEL4 DomU Update Problem 

Jim Klein wrote: 
> 
> Kernel panics (lots of them, all the same): 
> kernel BUG at arch/i386/mm/pgtable-xen.c:306! 
> invalid operand: 0000 [#1] 
> SMP 
> Modules linked in: ext3 jbd dm_mod xenblk sd_mod scsi_mod 
> CPU: 0 
> EIP: 0061:[<c011163a>] Not tainted VLI 
> EFLAGS: 00010282 (2.6.9-55.0.9.ELxenU) 
> EIP is at pgd_ctor+0x1d/0x26 
> eax: fffffff4 ebx: 00000000 ecx: f5392000 edx: 00000000 
> esi: c19fdd80 edi: eca6aaa0 ebp: 00000001 esp: ecb3cd6c 
> ds: 007b es: 007b ss: 0068 
> Process 10-udev.hotplug (pid: 398, threadinfo=ecb3c000 task=ecb2a070) 
> Stack: c0141b69 ecb4b000 c19fdd80 00000001 ecb4b000 eca6aaa0 c19fdd80 
> c19fde40 
> c0141ceb c19fdd80 eca6aaa0 00000001 c19fdd80 eca6aaa0 ecb4b000 
> 00000010 
> 00000001 000000d0 c1a1b080 0000000c c19fde08 c19fdd80 c0141eda 
> c19fdd80 
> Call Trace: 
> [<c0141b69>] cache_init_objs+0x35/0x56 
> [<c0141ceb>] cache_grow+0xfb/0x187 
> [<c0141eda>] cache_alloc_refill+0x163/0x19c 
> [<c01420f5>] kmem_cache_alloc+0x67/0x97 
> [<c0111671>] pgd_alloc+0x17/0x336 
> [<c01199d4>] mm_init+0xd7/0x116 
> [<c01199e4>] mm_init+0xe7/0x116 
> [<c0119c8a>] copy_mm+0xbb/0x396 
> [<c0268f10>] __cond_resched+0x14/0x3c 
> [<c011aa5a>] copy_process+0x6b5/0xb0b 
> [<c011af9d>] do_fork+0x8a/0x16b 
> [<c0107507>] error_code+0x2b/0x30 
> [<c0105d2c>] sys_clone+0x24/0x28 
> [<c010737f>] syscall_call+0x7/0xb 
> Code: 74 02 66 a5 a8 01 74 01 a4 5e 5b 5e 5f c3 80 3d 04 07 2f c0 00 75 
> 1c 6a 20 6a 00 ff 74 24 0c e8 ce 37 00 00 83 c4 0c 85 c0 74 08 <0f> 0b 
> 32 01 b6 31 27 c0 c3 80 3d 04 07 2f c0 00 75 0d c7 44 24 
> <0>Fatal exception: panic in 5 seconds 

OK. This crash is a bug in the 4.5 kernel that I've now fixed. It should be 
fixed when 4.6 comes out. In the meantime, you probably should be able to work 
around this bug by reducing the amount of memory you are assigning to that domain. 

Chris Lalancette 
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