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SubjectKernel oops with 2.4.18
Date
Here is one that has been bugging me for a while. Finally got something that 
might point to the cause...

I have a cd-rom that was built on a Mac with the hfs filesystem. (Yes, I
know that is strange. What do you expect? It is was made on a Mac!) I have
gotten a number of these. They used to work. Older kernels deal with this
type of disc. The later ones do not.

When I mount the disc with "mount -t hfs /dev/scd0 /mnt/cdrom1" the mount
hangs or segfaults. This used to work on older kernels. Everything else has
worked with the cd-rom. It broke at least 3-4 versions back.

I finally tracked down a kernel oops from it. It is run through ksymoops.
Hopefully it is correct.)

It complains about modules. That is because there are none really involved
here. (The scsi card and everything else are all compiled in static.)

ksymoops 2.4.1 on i686 2.4.18. Options used
-V (default)
-k /proc/ksyms (default)
-l /proc/modules (default)
-o /lib/modules/2.4.18/ (default)
-m /boot/System.map-2.4.18 (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.

No modules in ksyms, skipping objects
Warning (read_lsmod): no symbols in lsmod, is /proc/modules a valid lsmod
file?
Feb 28 16:50:11 summanulla kernel: invalid operand: 0000
Feb 28 16:50:11 summanulla kernel: CPU: 0
Feb 28 16:50:11 summanulla kernel: EIP: 0010:[grow_buffers+56/240] Not
tainted
Feb 28 16:50:11 summanulla kernel: EIP: 0010:[<c01344c8>] Not tainted
Using defaults from ksymoops -t elf32-i386 -a i386
Feb 28 16:50:11 summanulla kernel: EFLAGS: 00010206
Feb 28 16:50:11 summanulla kernel: eax: 000007ff ebx: 00000b00 ecx:
00000800 edx: c19468c0
Feb 28 16:50:11 summanulla kernel: esi: 00000200 edi: 00000b00 ebp:
00000002 esp: dd7f5d68
Feb 28 16:50:11 summanulla kernel: ds: 0018 es: 0018 ss: 0018
Feb 28 16:50:11 summanulla kernel: Process mount (pid: 1233,
stackpage=dd7f5000)
Feb 28 16:50:11 summanulla kernel: Stack: 00000b00 00000200 00000002 00000002
c0132767 00000b00 00000002 00000200
Feb 28 16:50:11 summanulla kernel: df8e9a80 00000001 de01f400 c0132988
00000b00 00000002 00000200 c01e3c0d
Feb 28 16:50:11 summanulla kernel: c1959478 00000000 c1959478 00000000
c016f1f6 00000b00 00000002 00000200
Feb 28 16:50:11 summanulla kernel: Call Trace: [getblk+39/64] [bread+24/128]
[scsi_release_command+125/144] [hfs_buffer_get+38/128] [hfs_mdb_get+170/1024]
Feb 28 16:50:11 summanulla kernel: Call Trace: [<c0132767>] [<c0132988>]
[<c01e3c0d>] [<c016f1f6>] [<c016dd9a>]
Feb 28 16:50:11 summanulla kernel: [<c01e5e01>] [<c016f0a5>] [<c0135636>]
[<c0122738>] [<c0135a28>] [<c0145173>]
Feb 28 16:50:11 summanulla kernel: [<c01123c0>] [<c0106ffc>] [<c014541b>]
[<c014526c>] [<c01454bc>] [<c0106f0b>]
Feb 28 16:50:11 summanulla kernel: Code: 0f 0b 8b 44 24 1c 2d 00 02 00 00 3d
00 0e 00 00 76 02 0f 0b

>>EIP; c01344c8 <grow_buffers+38/f0> <=====
Trace; c0132767 <getblk+27/40>
Trace; c0132988 <bread+18/80>
Trace; c01e3c0d <scsi_release_command+7d/90>
Trace; c016f1f6 <hfs_buffer_get+26/80>
Trace; c016dd9a <hfs_mdb_get+aa/400>
Trace; c01e5e01 <ioctl_internal_command+151/160>
Trace; c016f0a5 <hfs_read_super+65/190>
Trace; c0135636 <get_sb_bdev+206/270>
Trace; c0122738 <handle_mm_fault+58/c0>
Trace; c0135a28 <do_kern_mount+b8/140>
Trace; c0145173 <do_add_mount+23/d0>
Trace; c01123c0 <do_page_fault+0/4cb>
Trace; c0106ffc <error_code+34/3c>
Trace; c014541b <do_mount+15b/180>
Trace; c014526c <copy_mount_options+4c/a0>
Trace; c01454bc <sys_mount+7c/c0>
Trace; c0106f0b <system_call+33/38>
Code; c01344c8 <grow_buffers+38/f0>
00000000 <_EIP>:
Code; c01344c8 <grow_buffers+38/f0> <=====
0: 0f 0b ud2a <=====
Code; c01344ca <grow_buffers+3a/f0>
2: 8b 44 24 1c mov 0x1c(%esp,1),%eax
Code; c01344ce <grow_buffers+3e/f0>
6: 2d 00 02 00 00 sub $0x200,%eax
Code; c01344d3 <grow_buffers+43/f0>
b: 3d 00 0e 00 00 cmp $0xe00,%eax
Code; c01344d8 <grow_buffers+48/f0>
10: 76 02 jbe 14 <_EIP+0x14> c01344dc
<grow_buffers+4c/f0>
Code; c01344da <grow_buffers+4a/f0>
12: 0f 0b ud2a


2 warnings issued. Results may not be reliable.
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