linuxcompressed-devel

[lc-devel] 2.4.18 + comp-cache-2.4.18-0.22pre6"

[Marc-Christian P. <m....@gm...>]

Hi there,

Kernel "2.4.18" with patch "patch-comp-cache-2.4.18-0.22pre6"
I used pre6 cause pre7 does not compile.

kernel: Unable to handle kernel paging request at virtual address 7275736=
e
kernel: printing eip:
kernel: c0134d7d
kernel: *pde =3D 00000000
kernel: Oops: 0000
kernel: CPU: 0
kernel: EIP: 1010:[comp_cache_free+17/52] Tainted: P
kernel: EFLAGS: 00210246
kernel: eax: 7275736e ebx: 74636172 ecx: caeb6360 edx: 00000000
kernel: esi: 00000000 edi: cb10fdac ebp: ca85be60 esp: ca85be60
kernel: ds: 1018 es: 1018 ss: 1018
kernel: Process nmbd (pid: 11259, stackpage=3Dca85b000)
kernel: Stack: ca85be78 c01356af caeb6360 cb10fd94 00000000 00000000 ca85=
be98 c01356de
kernel: cb10fdac 00000000 00000000 00000000 00000000 cb10fd94 ca85bec0 c0=
128c7b
kernel: cb10fd94 00000000 00000000 00000000 00000000 cb10fd94 ca85bebc 00=
000000
kernel: Call Trace: [truncate_list_comp_pages+43/64] [truncate_comp_pages=
+26/48] [truncate_inode_pages+111/124] [vmtruncate+143/280] [inode_setatt=
r+43/192]
kernel: [ext3_setattr+428/500] [notify_change+81/332] [do_truncate+69/92]=
 [sys_ftruncate64+263/288] [system_call+58/68]
kernel:=20
kernel: Code: 8b 00 0f ab 50 18 19 d2 85 d2 74 02 0f 0b 51 e8 0f fb ff ff

The System is still up now, the oops is some minutes ago, but last night,=
 from
4am to 6am every 10-15 minutes the oops occurs with ending in a kernel pa=
nic at
6am.

Bug? Feature? ;)

--=20
Kind regards
=09Marc-Christian Petersen


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Fingerprint: 8602 69E0 A9C2 A509 8661  2B0B 408B 2D54 9477 50EC
Key available at wwwkeys.pgp.net. =A0 Encrypted e-mail preferred.

Re: [lc-devel] 2.4.18 + comp-cache-2.4.18-0.22pre6"

[Rodrigo S. de C. <rc...@im...>]

Hi Marc,

On Tue, Mar 12, 2002 at 11:30:02AM +0100, Marc-Christian Petersen wrote:
> Kernel "2.4.18" with patch "patch-comp-cache-2.4.18-0.22pre6"

The 0.22pre6 is very very unstable and should be used carefully. The
next version (0.22pre7) fixed many memory corruption bugs in the page
cache compression support which may be the cause of this oops. I will
release a patch today and could you give it a go to see if the bug is
still there? I really wouldn't like to have this bug in the 0.22 final
version I intend to release these next days.

> I used pre6 cause pre7 does not compile.

Fix already in my pool.

> The System is still up now, the oops is some minutes ago, but last night, from
> 4am to 6am every 10-15 minutes the oops occurs with ending in a kernel panic at
> 6am.

That happens all the time with bugs like that. It oopses and stops
only the current code path, but the kernel keeps running. Since it
seems a general memory corruption, the other code paths will
eventually oops too, ending up in a code with a panic, which stops all
the kernel :-)

> Bug? Feature? ;)

Surely a bug :-) Thank you for the report.

Best Regards,
-- 
Rodrigo S. de Castro <rc...@im...>

Re: [lc-devel] 2.4.18 + comp-cache-2.4.18-0.22pre6"

[Rodrigo S. de C. <rc...@im...>]

On Tue, Mar 12, 2002 at 08:20:31AM -0300, Rodrigo Souza de Castro wrote:
> On Tue, Mar 12, 2002 at 11:30:02AM +0100, Marc-Christian Petersen wrote:
> > Kernel "2.4.18" with patch "patch-comp-cache-2.4.18-0.22pre6"
> 
> The 0.22pre6 is very very unstable and should be used carefully. The
> next version (0.22pre7) fixed many memory corruption bugs in the page
> cache compression support which may be the cause of this oops. I will
> release a patch today and could you give it a go to see if the bug is
> still there? I really wouldn't like to have this bug in the 0.22 final
> version I intend to release these next days.

The 0.22pre8 patch for 2.4.18 version of Linux Kernel is already
available at:

http://prdownloads.sourceforge.net/linuxcompressed/patch-comp-cache-2.4.18-0.22pre8.bz2

And details about it can be found at:

http://sourceforge.net/forum/forum.php?forum_id=160297

This is (hopefuly) the last version before 0.22 final. I will be
checking its stability for the next hours before releasing the new
major version. Once stability is our focus now, I'd like to have a
feedback from whoever has spare time to test it.

Thanks,
-- 
Rodrigo S. de Castro <rc...@im...>