Re: [Xen-devel] refcount errors then crash on XenoLinux with the latest source

[Kip M. <km...@fs...>]

After a few more minutes the following popped out on the console:

CPU:    1
EIP:    0808:[<fc532927>]
EFLAGS: 00010206
eax: 0a725012   ebx: 00000010   ecx: fc657560   edx: fc76a460
esi: fc76a460   edi: fc657540   ebp: 00000000   esp: fc64fda0
ds: 0810   es: 0810   fs: 0810   gs: 0810   ss: 0810
Stack trace from ESP=fc64fda0:
ff865012 0000000a [fc5095ef] fc780140 0000003c fc657540 fc657540 [fc53240a]
       fc657540 fc657400 [fc509664] 0000000a [fc509299] fc648040 00000040 0000003e
       fc657400 fc780140 00000040 fc76a740 04000001 fc657540 00005048 [fc531ef0]
       fc657540 00000046 [fc509664] 0000000a 30303030 74203130 00000046 fc76a740
       04000001 fc64fe90 00000010 [fc5b1a7d] 00000010 fc657400 fc64fe90 3d6e6670
       33303030 63203462 00000001 fc76a740 fc600200 00000010 fc64fe90 [fc5b1c43]
       00000010 fc64fe90 fc76a740 0007fff0 000003b4 25c4fe2d 00000001 0007fff0
       0007fff0 00000000 00000000 [fc5af4c0] 0007fff0 fd800000 00000001 0007fff0
       00000000 00000000 00000040 00010810 00000810 00000810 fc500810 ffffff10
       [fc50cff5] 00000808 00000202 fc654d4d 0000004d fc64ff6c [fc518078] 0000004d
       00000000 fc64ff6c [fc518046] 0036bfec 00000000 00000292 fc654d00 02000001
       fc64ff6c 00000004 [fc5b1a7d] 00000004 00000000 fc64ff6c [fc5af0aa] fc650200
       00000086 00000001 fc654d00 fc5fff00 00000004 fc64ff6c [fc5b1c43] 00000004
       fc64ff6c fc654d00 [fc50465b] 35c9c161 50d04d38 00000001 00000040 fc648040
       00000040 fc7b8080 [fc5af4c0] 00000040 00000028 00000040 fc648040 00000040
       fc7b8080 00000040 fc640810 fc640810 00000810 fc7b0810 ffffff04 [fc5b585c]
       00000808 00000246 [fc5b5898] fc648040 004c4b40 ffffffff 61007372 69745f63
       5f72656d 74666f73 5f717269 69746361 64006e6f 5f706d75 656d6974 62007172
       636f6c72 00632e6b 736e6f63 2e656c6f 65640063 2e677562 65640063 fc648040

****************************************
CPU1 FATAL PAGE FAULT
[error_code=00000000]
Faulting linear address might be 0a725012
Aieee! CPU1 is toast...
****************************************

Is this oops from Xen or from XenoLinux? I downloaded the latest
ksymoops and did the following:
kmacy@xentap ./ksymoops -v ../xenolinux-2.4.25/vmlinux -m ../xenolinux-2.4.25/System.map < ../xeno-unstable.bk.home/tools/xc/lib/crash1.txt
ksymoops 2.4.9 on i686 2.4.25-xeno.  Options used
     -v ../xenolinux-2.4.25/vmlinux (specified)
     -k /proc/ksyms (default)
     -l /proc/modules (default)
     -o /lib/modules/2.4.25-xeno/ (default)
     -m ../xenolinux-2.4.25/System.map (specified)

No modules in ksyms, skipping objects
Warning (read_lsmod): no symbols in lsmod, is /proc/modules a valid
lsmod file?
Warning (compare_maps): mismatch on symbol state d, System.map says
c0175ca8, vmlinux says 0.  Ignoring System.map entry
Warning (compare_maps): mismatch on symbol state a, vmlinux says 0,
System.map says c0175ca8.  Ignoring System.map entry
CPU:    1
EIP:    0808:[<fc532927>]
Using defaults from ksymoopsSegmentation fault


				-Kip

On Mon, 23 Feb 2004, Kip Macy wrote:

> I had just tested my domain builder for the nth time on xeno-unstable
> (very latest source), when I saw the messages below on the console.
> DOM0 no longer responds to ping - I'm hoping that it will recover,
> however, in all likelihood I will be hitting the rpb in a few minutes.
>
> audit_all_pages
> zombie: pfn=00000000 cf=fffffffd tf=fffffffd dom=00000000
> refcount error: pfn=000000 cf=fffffffd refcount=1
> audit page: pfn=0 info: cf=fffffffd tf=fffffffd ts=0 dom=0
>
> refcount error: pfn=000247 cf=00000001 refcount=0
> audit page: pfn=247 info: cf=1 tf=f0000001 ts=0 dom=fc648040
>
> refcount error: pfn=00024d cf=00000001 refcount=0
> audit page: pfn=24d info: cf=1 tf=f0000001 ts=0 dom=fc648040
>
> refcount error: pfn=00036f cf=40000002 refcount=1
> audit page: pfn=36f info: cf=40000002 tf=f0000002 ts=0 dom=fc648be0
>   pte_pfn=002207 cf=10000026 tf=30000024 dom=fc648be0
>     pte_idx=3f9 *pte_idx=0036f063
>
> refcount error: pfn=000371 cf=40000002 refcount=1
> audit page: pfn=371 info: cf=40000002 tf=f0000002 ts=0 dom=fc648be0
>   pte_pfn=002207 cf=10000026 tf=30000024 dom=fc648be0
>     pte_idx=3fe *pte_idx=00371063
>
> refcount error: pfn=000372 cf=40000002 refcount=1
> audit page: pfn=372 info: cf=40000002 tf=f0000002 ts=0 dom=fc648be0
>   pte_pfn=002207 cf=10000026 tf=30000024 dom=fc648be0
>     pte_idx=3fd *pte_idx=00372063
>
> refcount error: pfn=000390 cf=00000001 refcount=0
> audit page: pfn=390 info: cf=1 tf=f0000001 ts=4ddca dom=fc649780
>
> refcount error: pfn=000392 cf=00000001 refcount=0
> audit page: pfn=392 info: cf=1 tf=f0000001 ts=4ddca dom=fc649780
>
> refcount error: pfn=000393 cf=00000001 refcount=0
> audit page: pfn=393 info: cf=1 tf=f0000001 ts=4ae4c dom=fc64a320
>
> refcount error: pfn=000395 cf=00000001 refcount=0
> audit page: pfn=395 info: cf=1 tf=f0000001 ts=0 dom=fc64a320
>
> refcount error: pfn=00039f cf=00000001 refcount=0
> audit page: pfn=39f info: cf=1 tf=f0000001 ts=0 dom=fc64aec0
>
> refcount error: pfn=0003a1 cf=00000001 refcount=0
> audit page: pfn=3a1 info: cf=1 tf=f0000001 ts=0 dom=fc64aec0
>
> refcount error: pfn=0003a2 cf=00000001 refcount=0
> audit page: pfn=3a2 info: cf=1 tf=f0000001 ts=0 dom=fc7a4060
>
> refcount error: pfn=0003a8 cf=00000001 refcount=0
> audit page: pfn=3a8 info: cf=1 tf=f0000001 ts=0 dom=fc7a4060
>
> refcount error: pfn=0003a9 cf=00000001 refcount=0
> audit page: pfn=3a9 info: cf=1 tf=f0000001 ts=0 dom=fc7a4c00
>
> refcount error: pfn=0003ab cf=00000001 refcount=0
> audit page: pfn=3ab info: cf=1 tf=f0000001 ts=0 dom=fc7a4c00
>
> refcount error: pfn=0003ac cf=00000001 refcount=0
> audit page: pfn=3ac info: cf=1 tf=f0000001 ts=191ab3 dom=fc7a57a0
>
> refcount error: pfn=0003ae cf=00000001 refcount=0
> audit page: pfn=3ae info: cf=1 tf=f0000001 ts=191ab3 dom=fc7a57a0
>
> refcount error: pfn=0003af cf=00000001 refcount=0
> audit page: pfn=3af info: cf=1 tf=f0000001 ts=191ab2 dom=fc7a6340
>
> refcount error: pfn=0003b1 cf=00000001 refcount=0
> audit page: pfn=3b1 info: cf=1 tf=f0000001 ts=0 dom=fc7a6340
>
> refcount error: pfn=0003b2 cf=00000001 refcount=0
> audit page: pfn=3b2 info: cf=1 tf=f0000001 ts=0 dom=fc7a6ee0
>
> refcount error: pfn=0003b4 cf=00000001 refcount=0
> audit page: pfn=3b4 info: cf=1 tf=f0000001 ts=0 dom=fc7a6ee0
>
>
>
>
>
>
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