Re: [Bug #25402] kernel (2.6.37-8-generic_amd64) panic on boot (withmessage "map_single: bounce buffer is not DMA'ble) - possible regression!!!

[carlos palma]

Because, at the beginning I tough it could be also a DELL firmware problem.
The 32 bit version works fine, the 64 bits under KVM works fine (tested 
with 1GB ram).
Only a few days ago I found similar problems also on DELL machines...
Happy new year

carlos


On 12/30/2010 11:51 PM, Rafael J. Wysocki wrote:
> On Thursday, December 30, 2010, carlos palma wrote:
> > 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 he begining
> > 2.6.36-2) Linux.
> Thanks for the info.
>
> Why did you put "regression" into double quotes?
>
> Rafael

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