[1.] One line summary of the problem:
Kernel panic when trying to mount a scsi cdrom.
[2.] Full description of the problem/report:
Since version 2.4.2, I get a kernel panic everytime I try to mount an
iso9660 cdrom :
# mount /dev/scd0 /cdrom
Detected scsi CD-ROM sr0 at scsi0, channel 0, id 0, lun 0
sr0: scsi3-mmc drive: 24x/24x write cd/rw xa/form2 cdda tray
mount: block device /dev/scd0 is write-protected, mounting read-only
sr: ran out of meme for scatter pad
Kernel panic: scsi_free: Bad offset
(typed by hand, since the system is frozen at this point of the
operation :-) )
No problem when I read a cd-rom (with cdparanoia, cdrecord or cdrdao)
nor when I write a cd/r cd/rw, nor when I listen a cd-audio....
[3.] Keywords (i.e., modules, networking, kernel):
scsi, kernel panic, mount
[4.] Kernel version (from /proc/version):
Linux version 2.4.3 (root@casimir) (gcc version 2.95.3 19991030
(prerelease)) #2 Sat Mar 31 19:34:40 CEST 2001
[5.] Output of Oops.. message (if applicable) with symbolic information
resolved (see Documentation/oops-tracing.txt)
NO OOPS
[6.] A small shell script or example program which triggers the
problem (if possible)
mount /dev/scd0 /cdrom
[7.] Environment
[7.1.] Software (add the output of the ver_linux script here)
Linux casimir 2.4.3 #2 Sat Mar 31 19:34:40 CEST 2001 i586 unknown
Gnu C 2.95.3
Gnu make 3.79.1
binutils 2.10.0.24
util-linux 2.11b
modutils 2.4.2
e2fsprogs 1.19
PPP 2.4.0
Linux C Library 1.3.so
awk: cmd. line:2: (FILENAME=- FNR=2) fatal: attempt to access field -1
Dynamic linker (ldd) 2.1.3
Linux C++ Library 2.8.0
Linux C++ Library ..
Procps 2.0.7
Net-tools 1.50
Kbd 0.99
Sh-utils 2.0
Modules Loaded ne 8390
[7.2.] Processor information (from /proc/cpuinfo):
processor : 0
vendor_id : CyrixInstead
cpu family : 5
model : 2
model name : 6x86 2x Core/Bus Clock
stepping : 5
fdiv_bug : no
hlt_bug : no
f00f_bug : no
coma_bug : yes
fpu : yes
fpu_exception : yes
cpuid level : 1
wp : yes
flags : fpu cyrix_arr
bogomips : 119.60
[7.3.] Module information (from /proc/modules):
ne 6704 1 (autoclean)
8390 6192 0 (autoclean) [ne]
[7.4.] Loaded driver and hardware information (/proc/ioports,
/proc/iomem)
0000-001f : dma1
0020-003f : pic1
0040-005f : timer
0060-006f : keyboard
0080-008f : dma page reg
00a0-00bf : pic2
00c0-00df : dma2
00f0-00ff : fpu
01f0-01f7 : ide0
0213-0213 : isapnp read
0240-025f : eth0
02f8-02ff : serial(set)
03c0-03df : vga+
03c0-03df : matrox
03f6-03f6 : ide0
03f8-03ff : serial(set)
0a79-0a79 : isapnp write
0cf8-0cff : PCI conf1
00000000-0009efff : System RAM
000a0000-000bffff : Video RAM area
000c0000-000c7fff : Video ROM
000c8000-000cbfff : Extension ROM
000f0000-000fffff : System ROM
00100000-04ffffff : System RAM
00100000-001bc34d : Kernel code
001bc34e-001fe5bf : Kernel data
fa800000-faffffff : Matrox Graphics, Inc. MGA 1064SG [Mystique]
fb7ec000-fb7effff : Matrox Graphics, Inc. MGA 1064SG [Mystique]
fb7ec000-fb7effff : matroxfb MMIO
fb800000-fbffffff : Matrox Graphics, Inc. MGA 1064SG [Mystique]
fb800000-fbffffff : matroxfb FB
e800-e80f : Intel Corporation 82371SB PIIX3 IDE [Natoma/Triton II]
[7.5.] PCI information ('lspci -vvv' as root)
[7.6.] SCSI information (from /proc/scsi/scsi)
Attached devices:
Host: scsi0 Channel: 00 Id: 00 Lun: 00
Vendor: Model: CD-R/RW RW7060S Rev: 1.20
Type: CD-ROM ANSI SCSI revision: 02
[7.7.] Other information that might be relevant to the problem
(please look in /proc and include all information that you
think to be relevant):
proc/scsi/sg :
debug : dev_max(currently)=7 max_active_device=1 (origin 1)
scsi_dma_free_sectors=160 sg_pool_secs_aval=320 def_reserved_size=32768
host_strs : Adaptec 1542
hosts : 820 0 1 16 1 0
version : 30117 Version: 3.1.17 (20001002)
[X.] Other notes, patches, fixes, workarounds:
Feel free to ask me whatever information you would need to investigate
the problem... Thanks :-)
Alex.
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Kernel panic when trying to mount a scsi cdrom.
Alexandre et/ou Sophie Beneteau Sat, 07 Apr 2001 06:49:25 -0700
