From mboxrd@z Thu Jan  1 00:00:00 1970
From: Hans Reiser <reiser@namesys.com>
Subject: Re: Fwd: Re: Segmentation Fault when mounting ataraid
Date: Wed, 29 Jan 2003 20:38:16 +0300
Message-ID: <3E381188.8080701@namesys.com>
References: <3E36E3EB.4040305@mb.tu-ilmenau.de>
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To: Manuel Krause <manuel.krause@mb.tu-ilmenau.de>
Cc: reiserfs-list <reiserfs-list@namesys.com>, Oleg Drokin <green@namesys.com>

Well, that certainly looks like a bug in mount options parsing code.  
Edward and Oleg, please review and fix.

Hans

Manuel Krause wrote:

> Hi!
>
> Just forwarding... the ksymoopsed version. Please, send any hints and 
> solutions or other comments to Jochens address <thehammer@gmx.net> .
>
> Manuel
>
>
> -------- Original Message --------
> From: - Tue Jan 28 20:56:55 2003
> Date: Tue, 28 Jan 2003 20:47:29 +0100
> From: Jochen Haemmerle <thehammer@gmx.net>
> User-Agent: Mozilla/5.0 (X11; U; Linux i686; en-US; rv:1.2.1)
> To: Manuel Krause <manuel.krause@mb.tu-ilmenau.de>
> Subject: Re: Segmentation Fault when mounting ataraid
> References: <3E35B2F8.10806@gmx.net> <3E35B99C.2040206@mb.tu-ilmenau.de>
> In-Reply-To: <3E35B99C.2040206@mb.tu-ilmenau.de>
>
> Well, down there it is!!
> thx for the quick answers
>
> Bye,
>
> Jochen
>
>
>
> Manuel Krause wrote:
>
> > On 01/27/2003 11:30 PM, Jochen Haemmerle wrote:
> >
> >> Hello!
> >>
> >> When I try to mount my reiserfs partition on a HPT370 Stripe I get a
> >> Segmentation Fault. All other partitions (reiserfs of cource) work 
> fine.
> >>
> >> My kernel is the 2.4.20 from Kernel.org
> >> The PC is a Dual PIII 866 with Via-Apollo Chipset
> >> The Harddisks are 2 Maxtor 80GB
> >> ACPI is turned off !
> >>
> >> I don't know if this error depends on reiserfs, but maybe someone can
> >> help me!
> >>
> >> Best Regards
> >>
> >> Jochen Haemmerle
> >>
> >
> > Can you process it through something like:
> > "cat this-segfault.txt | ksymoops -m
> > /boot/System.map-you.had@segfault" and post the result ... while
> > awaiting the developers' answer?!
> >
> > This would provide essentially more info for them (even if they knew
> > the BUG already), AFAIK.
> >
> > Bye,
> >
> > Manuel
> >
>
> guardian@viking:~$ cat segfault.txt | ksymoops -m /boot/System.map-2.4.20
> ksymoops 2.4.6 on i686 2.4.20.  Options used
>      -V (default)
>      -k /proc/ksyms (default)
>      -l /proc/modules (default)
>      -o /lib/modules/2.4.20/ (default)
>      -m /boot/System.map-2.4.20 (specified)
>
> Unable to handle kernel NULL pointer dereference at vitual address 
> 00000004
> c01a62c0
> *pde = 00000000
> Oops: 0002
> CPU:   0
> EFLAGS: 00010012
> eax: 00000000   ebx: c03324f8  ecx: dff188a0   edx: c03324fc
> esi: 00000000   edi: c03324f8  ebp: 00000008   esp: d7839d98
> Process mount (pid: 327, stackpage=d7839000)
>       007c0000 098a9f2d c0332518 00000800 c0332520 c0332518 00000080
> 00000000
>       003e003f 00000000 c01a6c6c c03324f8 00000000 d7cc54a0 00000008
> 00000000
> Call Trace:   [<c01a698d>] [<c01a6c6c>][<c01a6ccc>] [<c01a6e27>]
> [<c0172671>]
> [<c0173188>] [<c013c712>] [<c014d546>][<c013c8fd>] [<c014e589>] 
> [<c014e842>]
> [<c014e6ad>] [<c014ec6f>] [<c0106f17>]
> Code: 89 50 04 89 02 c7 01 00 00 00 00 c7 41 04 00 00 00 00 ff 0b
> Using defaults from ksymoops -t elf32-i386 -a i386
>
>
>  >>ebx; c03324f8 <parse_options+124/1c8>
>  >>edx; c03324fc <parse_options+128/1c8>
>  >>edi; c03324f8 <parse_options+124/1c8>
>
> Trace; c01a698d <reiserfs_super_in_proc+69/254>
> Trace; c01a6c6c <reiserfs_per_level_in_proc+f4/134>
> Trace; c01a6ccc <reiserfs_bitmap_in_proc+20/a0>
> Trace; c01a6e27 <reiserfs_on_disk_super_in_proc+db/f0>
> Trace; c0172671 <nlm_shutdown_hosts+e9/11c>
> Trace; c0173188 <nlmsvc_lock+c8/340>
> Trace; c013c712 <sys_getdents64+7e/b3>
> Trace; c014d546 <notesize+1e/2c>
> Trace; c013c8fd <max_select_fd+9d/a4>
> Trace; c014e589 <handle_ide_mess+25/194>
> Trace; c014e842 <msdos_partition+14a/2f8>
> Trace; c014e6ad <handle_ide_mess+149/194>
> Trace; c014ec6f <__load_block_bitmap+17f/198>
> Trace; c0106f17 <show_stack+7/78>
>
> Code;  00000000 Before first symbol
> 00000000 <_EIP>:
> Code;  00000000 Before first symbol
>    0:   89 50 04                  mov    %edx,0x4(%eax)
> Code;  00000003 Before first symbol
>    3:   89 02                     mov    %eax,(%edx)
> Code;  00000005 Before first symbol
>    5:   c7 01 00 00 00 00         movl   $0x0,(%ecx)
> Code;  0000000b Before first symbol
>    b:   c7 41 04 00 00 00 00      movl   $0x0,0x4(%ecx)
> Code;  00000012 Before first symbol
>   12:   ff 0b                     decl   (%ebx)
>
>
>
>


-- 
Hans