RE: [Xen-devel] (XEN) domain_crash_sync called from entry.S (ff158e99)

["Ian Pratt" <m+Ian.Pratt@xxxxxxxxxxxx>]

Have you a recipe for reproducing? We haven't seen this. 

Thanks,
Ian

> -----Original Message-----
> From: xen-devel-bounces@xxxxxxxxxxxxxxxxxxx 
> [mailto:xen-devel-bounces@xxxxxxxxxxxxxxxxxxx] On Behalf Of 
> Christopher S. Aker
> Sent: 11 April 2006 20:43
> To: xen-devel
> Subject: [Xen-devel] (XEN) domain_crash_sync called from 
> entry.S (ff158e99)
> 
> Xen/xen0 as of Sun Apr  9 18:23:16 2006 +0100 
> 9591:81bc9e9fb40d.  The domU kernel is a few days previous to 
> that -- after all of Keir's xvf kthread updates.
> 
> (XEN) domain_crash_sync called from entry.S (ff158e99)
> (XEN) Domain 51 (vcpu#1) crashed on cpu#0:
> (XEN) ----[ Xen-3.0-unstable    Not tainted ]----
> (XEN) CPU:    0
> (XEN) EIP:    0061:[<c0111df0>]
> (XEN) EFLAGS: 00010292   CONTEXT: guest
> (XEN) eax: 00000000   ebx: 01649000   ecx: 7ffdf061   edx: 80000000
> (XEN) esi: 00000001   edi: c6087030   ebp: c0867fb4   esp: c0867f24
> (XEN) cr0: 8005003b   cr3: 7fc81000
> (XEN) ds: 007b   es: 007b   fs: 0000   gs: 0000   ss: 0069   cs: 0061
> (XEN) Guest stack trace from esp=c0867f24:
> (XEN)    c0866000 c69dd900 c0111e80 c69dd900 c0468438 
> c69dd900 c01051fa 
> 00000001
> (XEN)    c0866000 012193bf 00000000 c0866000 c0866000 
> 00476385 00000000 
> c011fd55
> (XEN)    c253267c c2532550 c110a240 f88990d7 00005409 
> c0866000 f8528476 
> 00005409
> (XEN)    c69dd580 c0867f9c b7ec2ff4 bfe21920 00000000 
> c0866000 c0102e47 
> 00000011
> (XEN)    bfe218fc b7ec2ff4 f578d040 00000000 c0866000 
> c01051fa b7ec2ff4 
> 00000000
> (XEN)    00000000 bfe21920 00000000 bfe21908 000016c2 
> 0000007b 0000007b 
> 00000002
> (XEN)    b7e366d8 00000073 00000246 bfe218fc 0000007b 
> 2507f000 b7d2115d
> 
> ...then, very shortly after, in dom0...
> 
> Unable to handle kernel NULL pointer dereference at virtual 
> address 00000004
>   printing eip:
> c0161655
> 07fb5000 -> *pde = 00000001:e33ff001
> 077ba000 -> *pme = 00000000:00000000
> Oops: 0002 [#1]
> SMP
> Modules linked in:
> CPU:    0
> EIP:    0061:[<c0161655>]    Not tainted VLI
> EFLAGS: 00010046   (2.6.16-xen0 #1)
> EIP is at cache_alloc_refill+0x185/0x560
> eax: c065ed80   ebx: ffffffff   ecx: 00000010   edx: 00000000
> esi: c7ac5040   edi: 00000002   ebp: c067ee80   esp: c7a75e94
> ds: 007b   es: 007b   ss: 0069
> Process li-statusd.pl (pid: 24459, threadinfo=c7a74000 task=cdc9e030)
> Stack: <0>c011bfe2 c0673d40 000000d0 000000d0 00000001 
> 000000d0 c0673dc0 c0672c00
>         c065ed80 00000020 c95f6240 c7a74000 c95f6240 c7ac505c 00000001
> fffffff4
>         00000000 ceb0ea84 c696d030 c01614c7 fffffff4 ca164a84 
> c011d5cc c0673dc0 Call Trace:
>   [<c011bfe2>] dup_fd+0xc2/0x3b0
>   [<c01614c7>] kmem_cache_alloc+0x77/0x80
>   [<c011d5cc>] copy_process+0xa5c/0x1220
>   [<c0164a9c>] fd_install+0x2c/0x60
>   [<c011de00>] do_fork+0x70/0x200
>   [<c0102e47>] sys_fork+0x37/0x40
>   [<c0105121>] syscall_call+0x7/0xb
> Code: 56 0c 8b 3c b8 89 7e 14 89 54 8d 14 41 89 4d 00 8b 44 
> 24 18 8b 7e 10 3b 78 38 0f 83 3a ff ff ff 4b 83 fb ff 75 c0 
> 8b 16 8b 46 04 <89> 42
> 04 89 10 83 7e 14 ff c7 06 00 01 10 00 c7 46 04 00 02 20
> 
> -Chris
> 
> 
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