[linux-lvm] strange behavior with 1.0.5 on Linux 2.4.19?

Gregory K. Ade gkade at bigbrother.net
Mon Oct 28 22:38:01 UTC 2002 

On Mon, 2002-10-28 at 01:17, Heinz J . Mauelshagen wrote:

> Run the kernel oops you probably got for "lvcreate --snapshot ..." through
> ksymoops, please.

Okay, just for consistency's sake, I ran:

--->8--[Cut Here]-->8---
root at burpr(pts/24):/ 36 # lvdisplay /dev/vg00/tmp
--- Logical volume ---
LV Name                /dev/vg00/tmp
VG Name                vg00
LV Write Access        read/write
LV Status              available
LV #                   2
# open                 1
LV Size                2 GB
Current LE             512
Allocated LE           512
Allocation             next free
Read ahead sectors     120
Block device           58:1


root at burpr(pts/24):/ 37 # lvcreate --snapshot --extents 512 --name
tmp_snap /dev/vg00/tmp
lvcreate -- INFO: using default snapshot chunk size of 64 KB for
"/dev/vg00/tmp_snap"
Segmentation fault
root at burpr(pts/24):/ 38 #
--->8--[Cut Here]-->8---

That gave me an oops.  pulling it from dmesg and sticking it into a
file, I ran ksymoops, and here's the output in all it's hairy glory:

--->8--[Cut Here]-->8---
ksymoops 2.4.1 on i686 2.4.19-2.burpr.  Options used
     -V (default)
     -k /proc/ksyms (default)
     -l /proc/modules (default)
     -o /lib/modules/2.4.19-2.burpr/ (default)
     -m /boot/System.map-2.4.19-2.burpr (default)

Warning: You did not tell me where to find symbol information.  I will
assume that the log matches the kernel and modules that are running
right now and I'll use the default options above for symbol resolution.
If the current kernel and/or modules do not match the log, you can get
more accurate output by telling me the kernel version and where to find
map, modules, ksyms etc.  ksymoops -h explains the options.

Warning (compare_maps): mismatch on symbol usb_devfs_handle  , usbcore says f9233274, /lib/modules/2.4.19-2.burpr/kernel/drivers/usb/usbcore.o says f9232d34.  Ignoring /lib/modules/2.4.19-2.burpr/kernel/drivers/usb/usbcore.o entry
Warning (compare_maps): mismatch on symbol icmpv6_socket  , ipv6 says f92232e0, /lib/modules/2.4.19-2.burpr/kernel/net/ipv6/ipv6.o says f9220420.  Ignoring /lib/modules/2.4.19-2.burpr/kernel/net/ipv6/ipv6.o entry
Warning (compare_maps): mismatch on symbol icmpv6_statistics  , ipv6 says f92212e0, /lib/modules/2.4.19-2.burpr/kernel/net/ipv6/ipv6.o says f921e420.  Ignoring /lib/modules/2.4.19-2.burpr/kernel/net/ipv6/ipv6.o entry
Warning (compare_maps): mismatch on symbol inet6_dev_count  , ipv6 says f921f000, /lib/modules/2.4.19-2.burpr/kernel/net/ipv6/ipv6.o says f921c140.  Ignoring /lib/modules/2.4.19-2.burpr/kernel/net/ipv6/ipv6.o entry
Warning (compare_maps): mismatch on symbol inet6_ifa_count  , ipv6 says f921f004, /lib/modules/2.4.19-2.burpr/kernel/net/ipv6/ipv6.o says f921c144.  Ignoring /lib/modules/2.4.19-2.burpr/kernel/net/ipv6/ipv6.o entry
Warning (compare_maps): mismatch on symbol inet6_protos  , ipv6 says f9221260, /lib/modules/2.4.19-2.burpr/kernel/net/ipv6/ipv6.o says f921e3a0.  Ignoring /lib/modules/2.4.19-2.burpr/kernel/net/ipv6/ipv6.o entry
Warning (compare_maps): mismatch on symbol inetsw6  , ipv6 says f921efa0, /lib/modules/2.4.19-2.burpr/kernel/net/ipv6/ipv6.o says f921c0e0.  Ignoring /lib/modules/2.4.19-2.burpr/kernel/net/ipv6/ipv6.o entry
Warning (compare_maps): mismatch on symbol ip6_ra_chain  , ipv6 says f92209a0, /lib/modules/2.4.19-2.burpr/kernel/net/ipv6/ipv6.o says f921dae0.  Ignoring /lib/modules/2.4.19-2.burpr/kernel/net/ipv6/ipv6.o entry
Warning (compare_maps): mismatch on symbol ipv6_statistics  , ipv6 says f921f1a0, /lib/modules/2.4.19-2.burpr/kernel/net/ipv6/ipv6.o says f921c2e0.  Ignoring /lib/modules/2.4.19-2.burpr/kernel/net/ipv6/ipv6.o entry
Warning (compare_maps): mismatch on symbol raw_v6_htable  , ipv6 says f92211e0, /lib/modules/2.4.19-2.burpr/kernel/net/ipv6/ipv6.o says f921e320.  Ignoring /lib/modules/2.4.19-2.burpr/kernel/net/ipv6/ipv6.o entry
Warning (compare_maps): mismatch on symbol rt6_stats  , ipv6 says f921f168, /lib/modules/2.4.19-2.burpr/kernel/net/ipv6/ipv6.o says f921c2a8.  Ignoring /lib/modules/2.4.19-2.burpr/kernel/net/ipv6/ipv6.o entry
Warning (compare_maps): mismatch on symbol udp_stats_in6  , ipv6 says f92209e0, /lib/modules/2.4.19-2.burpr/kernel/net/ipv6/ipv6.o says f921db20.  Ignoring /lib/modules/2.4.19-2.burpr/kernel/net/ipv6/ipv6.o entry
kernel BUG at vmalloc.c:236!
invalid operand: 0000
CPU:    2
EIP:    0010:[<c0132082>]    Not tainted
Using defaults from ksymoops -t elf32-i386 -a i386
EFLAGS: 00010246
eax: ffffffff   ebx: 00000000   ecx: 51eb851f   edx: 00000000
esi: 00000000   edi: e6421400   ebp: fffffff4   esp: d5d7bd20
ds: 0018   es: 0018   ss: 0018
Process lvcreate (pid: 19229, stackpage=d5d7b000)
Stack: 00000000 00000000 e6421400 fffffff4 000001f0 f931a000 00000001 fffffff4
       c030ca14 c030cb7c 000001f0 00000001 c024cd45 00000000 000001f2 00000163
       e642156c 00000000 e6421400 d5d7bdf8 c024cdf8 e6421400 e6421400 000bd000
Call Trace:    [<c024cd45>] [<c024cdf8>] [<c024a850>] [<c02480cc>] [<c01eaaff>]
  [<c014b397>] [<c01089cb>]
Code: 0f 0b ec 00 00 ae 2b c0 31 c0 e9 e4 01 00 00 6a 02 53 e8 3f

>>EIP; c0132082 <__vmalloc+26/224>   <=====
Trace; c024cd45 <lvm_snapshot_alloc_hash_table+45/8c>
Trace; c024cdf8 <lvm_snapshot_alloc+6c/e0>
Trace; c024a850 <lvm_do_lv_create+528/878>
Trace; c02480cc <lvm_chr_ioctl+71c/828>
Trace; c01eaaff <locate_hd_struct+27/70>
Trace; c014b397 <sys_ioctl+1bb/1f6>
Trace; c01089cb <system_call+33/38>
Code;  c0132082 <__vmalloc+26/224>
00000000 <_EIP>:
Code;  c0132082 <__vmalloc+26/224>   <=====
   0:   0f 0b                     ud2a      <=====
Code;  c0132084 <__vmalloc+28/224>
   2:   ec                        in     (%dx),%al
Code;  c0132085 <__vmalloc+29/224>
   3:   00 00                     add    %al,(%eax)
Code;  c0132087 <__vmalloc+2b/224>
   5:   ae                        scas   %es:(%edi),%al
Code;  c0132088 <__vmalloc+2c/224>
   6:   2b c0                     sub    %eax,%eax
Code;  c013208a <__vmalloc+2e/224>
   8:   31 c0                     xor    %eax,%eax
Code;  c013208c <__vmalloc+30/224>
   a:   e9 e4 01 00 00            jmp    1f3 <_EIP+0x1f3> c0132275 <__vmalloc+219/224>
Code;  c0132091 <__vmalloc+35/224>
   f:   6a 02                     push   $0x2
Code;  c0132093 <__vmalloc+37/224>
  11:   53                        push   %ebx
Code;  c0132094 <__vmalloc+38/224>
  12:   e8 3f 00 00 00            call   56 <_EIP+0x56> c01320d8 <__vmalloc+7c/224>


13 warnings issued.  Results may not be reliable.
--->8--[Cut Here]-->8---

Anything else I can provide?

-- 
Gregory K. Ade <gkade at bigbrother.net>
http://bigbrother.net/~gkade
OpenPGP Key ID: EAF4844B  keyserver: pgpkeys.mit.edu
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