Re: Sun Fire 480R booting now [Was: Re: linux-image-2.6.26-1-sparc64-smp: [sparc] SunFire480R cassini network driver kernel panic]

2011-04-13 Thread Moritz Mühlenhoff 
Hermann Lauer wrote:
> > Just found the "initcall_debug=1 ignore_loglevel" suggested by davem
> > during the last debugging session with this machine.
> > 
> > Tail of the output is below for completeness, thought I feel
> > I should try the latest stable vanilla kernel when time permits.
> 
> 2.6.38.2 vanilla compiled under squeeze is booting and running fine 
> since around an hour here on a 480R. Also on 880 it is running
> with minor glitches so far.
> 
> Thanks to all the sparc linux people for this good release.
> 
> For the debian sparc list: Hoping that wheezy will get a 2.6.38 kernel.

A 2.6.38 based kernel image is already available in wheezy/testing

Please test it and report, if it also works.

Cheers,
Moritz


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Re: Warning when mounting btrfs partition, kernel unaligned access

2011-04-13 Thread David Miller 
From: David Sterba 
Date: Wed, 13 Apr 2011 11:40:37 +0200

> On Wed, Apr 13, 2011 at 01:03:56AM +0200, Sébastien Bernard wrote:
>> Then, after writing on the disk, I got a lot of warning:
>> [  822.515875] Kernel unaligned access at TPC[103c2204]
>> 
>> I peeked a look at the btrf_csum_final and here's the function :
>> void btrfs_csum_final(u32 crc, char *result)
>> {
>> *(__le32 *)result = ~cpu_to_le32(crc);
>> }
> 
> FYI, this has been fixed and is already merged into Linus' tree. Commit
> 7e75bf3ff3a716d7b21d8fb43bf823115801c1e9.

Might I suggest adding a BUG_ON() validation of the alignment or
similar here?

You can make the test really cheap, and this way no matter what kind
of systems the btrfs folks do their testing on this kind of regression
will be spotted fast.


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Re: Warning when mounting btrfs partition, kernel unaligned access

2011-04-13 Thread David Sterba 
Hi

On Wed, Apr 13, 2011 at 01:03:56AM +0200, Sébastien Bernard wrote:
> Then, after writing on the disk, I got a lot of warning:
> [  822.515875] Kernel unaligned access at TPC[103c2204]
> 
> I peeked a look at the btrf_csum_final and here's the function :
> void btrfs_csum_final(u32 crc, char *result)
> {
> *(__le32 *)result = ~cpu_to_le32(crc);
> }

FYI, this has been fixed and is already merged into Linus' tree. Commit
7e75bf3ff3a716d7b21d8fb43bf823115801c1e9.

dave


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