linux-kernel - Re: [Bug #25402] kernel (2.6.37-8-generic_amd64) panic on boot (with message "map_single: bounce buffer is not DMA'ble)

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Date:	Thu, 30 Dec 2010 22:33:13 +0100
From:	carlos palma <carlos.palma@....com>
To:	"Rafael J. Wysocki" <rjw@...k.pl>
CC:	Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
	Kernel Testers List <kernel-testers@...r.kernel.org>,
	Maciej Rutecki <maciej.rutecki@...il.com>,
	Florian Mickler <florian@...kler.org>
Subject: Re: [Bug #25402] kernel (2.6.37-8-generic_amd64) panic on boot (with
 message "map_single: bounce buffer is not DMA'ble) - possible regression
 !!!

I can confirm that this "regression" still exists with the kernel 
2.6.37-rc8.
The Call Trace is basically the same:

...
Kernel panic - not syncing: map_single ...
Pid 935, comm: NetworkManager Tainted
call trace
panic+oxbf/0x200
? default_spin_lock_flags+0x9/0x10
?swiotlb_tlb_map_single+0x1ce/0x250
?map_single+0x46/0x60
swiotlb_map_page+0xa6/0xf
... and then the FREEZE ... only a hard reset brings to live (with 
2.6.36-2) Linux.

carlos.


On 12/30/2010 12:07 AM, Rafael J. Wysocki wrote:
> This message has been generated automatically as a part of a summary report
> of recent regressions.
>
> The following bug entry is on the current list of known regressions
> from 2.6.36.  Please verify if it still should be listed and let the tracking team
> know (either way).
>
>
> Bug-Entry	:http://bugzilla.kernel.org/show_bug.cgi?id=25402
> Subject		: kernel (2.6.37-8-generic_amd64) panic on boot (with message "map_single: bounce buffer is not DMA'ble) - possible regression !!!
> Submitter	: carlos<carlos.palma@....com>
> Date		: 2010-12-21 19:58 (9 days old)
>
>
>

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