lists.openwall.net   lists  /  announce  owl-users  owl-dev  john-users  john-dev  passwdqc-users  yescrypt  popa3d-users  /  oss-security  kernel-hardening  musl  sabotage  tlsify  passwords  /  crypt-dev  xvendor  /  Bugtraq  Full-Disclosure  linux-kernel  linux-netdev  linux-ext4  PHC 
Open Source and information security mailing list archives
 
Hash Suite: Windows password security audit tool. GUI, reports in PDF.
[<prev] [next>] [<thread-prev] [day] [month] [year] [list]
Date:	Sat, 14 Jun 2008 12:02:33 +0200
From:	Francois Romieu <romieu@...zoreil.com>
To:	c4p7n1@...itanio.org
Cc:	Andrew Morton <akpm@...ux-foundation.org>,
	linux-kernel@...r.kernel.org, netdev@...r.kernel.org
Subject: Re: [BUG or cosmic ray] WARNING: at net/sched/sch_generic.c:222
	dev_watchdog+0xe8/0x100()

c4p7n1@...itanio.org <c4p7n1@...itanio.org> :
[...]
> > > [  125.682725] r8169: eth0: link up
> > > ...
> > > [ 1337.654531] NETDEV WATCHDOG: eth0: transmit timed out
> > > [ 1338.333962] r8169: eth0: link up
> ...
> 
> Definitely a bug. I've got the same lock-up a second time on a rc5.
> 
> It may be related to a patch:
> http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commit;h=21e197f231343201368338603cb0909a13961bac

Short answer: no.

With this patch the device driver can at least try to initialize. Without it,
you are bust.

> Before that patch on this chip [10ec:8136] the r8169 driver crashed with a null pointer exception.
> Strangely, on a .22  kernel came out (at that time always) the same lspci error:
> 02:00.0 Ethernet controller: Realtek Semiconductor Co., Ltd. RTL8101E PCI Express Fast Ethernet controller (rev ff) (prog-if ff)
>  !!! Unknown header type 7f
> 
> ... just my observations ;-) 

They are welcome.

If lspci can not read the device registers correctly, chances are high
that the device driver can not either.

If you can reproduce the "!!! Unknown header type 7f" error with lspci
on 2.6.26-rc6 we have a problem which goes beyond the sole r8169 device
driver. linux-kernel or linux-pci will probably be more helpful than
netdev then.

Playing with the pci=nommconf , noapic or nomsi options at boot time
can make a difference with relation to lspci behavior. It is possible
(or almost certain given Murphy's grip) that the r8169 driver will
still not behave correctly. I have not received a lot of success/failure
reports for this chipset ([10ec:8136]) so things can surely improve.

-- 
Ueimor
--
To unsubscribe from this list: send the line "unsubscribe netdev" in
the body of a message to majordomo@...r.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html

Powered by blists - more mailing lists