Hi!

I experienced some problems with the following setup:

linux-2.4.0-test4
glibc-2.1.3
cdrecord-1.9

HP-CD Writer IDE
SanDisk ImageMate SDDR31

I get repeatable kernel oops when calling cdrecord -scanbus:

[~] cdrecord -scanbus
Cdrecord 1.9 (i586-pc-linux-gnu) Copyright (C) 1995-2000 J�rg Schilling
Linux sg driver version: 3.1.15
Using libscg version 'schily-0.1'
scsibus0:
        0,0,0     0) 'HP      ' 'CD-Writer+ 9100 ' '1.0a' Removable CD-ROM
        0,1,0     1) *
        0,2,0     2) *
        0,3,0     3) *
        0,4,0     4) *
        0,5,0     5) *
        0,6,0     6) *
        0,7,0     7) *
scsibus1:
        1,0,0   100) 'ehilf/pa' 'k_e/paket_inhalt' '_nss' not present unknown device 
type 0xf
        1,1,0   101) *
        1,2,0   102) *
        1,3,0   103) *
        1,4,0   104) *
        1,5,0   105) *
        1,6,0   106) *
        1,7,0   107) *
norbert@mandala:
[~] cdrecord -scanbus
Cdrecord 1.9 (i586-pc-linux-gnu) Copyright (C) 1995-2000 J�rg Schilling
Linux sg driver version: 3.1.15
Using libscg version 'schily-0.1'
scsibus0:
        0,0,0     0) 'HP      ' 'CD-Writer+ 9100 ' '1.0a' Removable CD-ROM
        0,1,0     1) *
        0,2,0     2) *
        0,3,0     3) *
        0,4,0     4) *
        0,5,0     5) *
        0,6,0     6) *
        0,7,0     7) *
scsibus1:
        1,0,0   100) 'SanDisk ' 'ImageMate II    ' '1.30' Removable Disk
        1,1,0   101) *
        1,2,0   102) *
        1,3,0   103) *
        1,4,0   104) *
        1,5,0   105) *
        1,6,0   106) *
        1,7,0   107) *
norbert@mandala:
[~] cdrecord -scanbus
Cdrecord 1.9 (i586-pc-linux-gnu) Copyright (C) 1995-2000 J�rg Schilling
Linux sg driver version: 3.1.15
Using libscg version 'schily-0.1'
scsibus0:
        0,0,0     0) 'HP      ' 'CD-Writer+ 9100 ' '1.0a' Removable CD-ROM
        0,1,0     1) *
        0,2,0     2) *
        0,3,0     3) *
        0,4,0     4) *
        0,5,0     5) *
        0,6,0     6) *
        0,7,0     7) *
scsibus1:                                 �' Removable vendor specific 5 WORM
        1,1,0   101) *��`9c�`9' 'iP{9' '@ 
        1,2,0   102) *
        1,3,0   103) *
        1,4,0   104) *
        1,5,0   105) *
        1,6,0   106) *
        1,7,0   107) *

Thats very strange! After the third time I got a kernel ooops:
Jul 22 10:30:56 mandala kernel: kernel BUG at page_alloc.c:87!
Jul 22 10:30:56 mandala kernel: invalid operand: 0000
Jul 22 10:30:56 mandala kernel: CPU:    0
Jul 22 10:30:56 mandala kernel: EIP:    0010:[__free_pages_ok+73/696]
Jul 22 10:30:56 mandala kernel: EFLAGS: 00210282
Jul 22 10:30:56 mandala kernel: eax: 0000001f   ebx: 00008000   ecx: 00000000   edx: 
00000001
Jul 22 10:30:56 mandala kernel: esi: c1056e00   edi: c406001c   ebp: 00000003   esp: 
c1a63e98
Jul 22 10:30:56 mandala kernel: ds: 0018   es: 0018   ss: 0018
Jul 22 10:30:56 mandala kernel: Process cdrecord (pid: 719, stackpage=c1a63000)
Jul 22 10:30:56 mandala kernel: Stack: c01ece65 c01ed033 00000057 00008000 015b8000 
c406001c c7a8c000 c1040000
Jul 22 10:30:56 mandala kernel:        c0228568 00200217 ffffffff 00002477 c018ff34 
c7a8c000 00000000 c018ff67
Jul 22 10:30:56 mandala kernel:        c15b8000 00008000 00000001 c018f225 c15b8000 
00008000 00000001 c7ba79e0
Jul 22 10:30:56 mandala kernel: Call Trace: [tvecs+7293/62488] [tvecs+7755/62488] 
[sg_low_free+168/192] [sg_free+27/32] [sg_remove_scat+73/152] [sg_remove_sfp+118/248] 
[sg_release+52/128]
Jul 22 10:30:56 mandala kernel:        [__fput+35/144] [_fput+17/64] 
[filp_close+93/104] [put_files_struct+84/184] [do_exit+185/536] [sys_exit+14/16] 
[system_call+52/64]
Jul 22 10:30:56 mandala kernel: Code: 0f 0b 83 c4 0c 89 f6 89 f0 2b 05 a0 81 22 c0 c1 
f8 06 3b 05
Jul 22 10:31:05 mandala su: (to root) norbert on /dev/pts/1
Jul 22 10:31:05 mandala PAM-unix2[720]: session started for user root, service su
Jul 22 10:31:37 mandala kernel: kernel BUG at page_alloc.c:87!
Jul 22 10:31:37 mandala kernel: invalid operand: 0000
Jul 22 10:31:37 mandala kernel: CPU:    0
Jul 22 10:31:37 mandala kernel: EIP:    0010:[__free_pages_ok+73/696]
Jul 22 10:31:37 mandala kernel: EFLAGS: 00210286
Jul 22 10:31:37 mandala kernel: eax: 0000001f   ebx: c1056e00   ecx: 00000000   edx: 
ffffffff
Jul 22 10:31:37 mandala kernel: esi: c1056e00   edi: 00000034   ebp: 00000000   esp: 
c1245f78
Jul 22 10:31:37 mandala kernel: ds: 0018   es: 0018   ss: 0018
Jul 22 10:31:37 mandala kernel: Process kswapd (pid: 2, stackpage=c1245000)
Jul 22 10:31:37 mandala kernel: Stack: c01ece65 c01ed033 00000057 c1056e00 c1056e1c 
00000034 00000040 00200246
Jul 22 10:31:37 mandala kernel:        00000000 00000000 00000023 00000040 c011edb6 
00000f00 00000008 c1244221
Jul 22 10:31:37 mandala kernel:        00000040 00000000 c0124a32 00000040 00000004 
00000f00 c01ecc05 c1244221
Jul 22 10:31:37 mandala kernel: Call Trace: [tvecs+7293/62488] [tvecs+7755/62488] 
[shrink_mmap+386/532] [do_try_to_free_pages+138/468] [tvecs+6685/62488] 
[kswapd+140/148] [kernel_thread+40/56]
Jul 22 10:31:37 mandala kernel: Code: 0f 0b 83 c4 0c 89 f6 89 f0 2b 05 a0 81 22 c0 c1 
f8 06 3b 05


I also posted this to the cdwrite group and to the usb list.

For answers from the scsi.-list: please cc me, since I am NOT subscribed!

Best wishes
Norbert

-- 
ciao
norb

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| Norbert Preining              http://www.logic.at/people/preining |
| University of Technology Vienna, Austria        [EMAIL PROTECTED] |
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