Sparc32: random invalid instruction occourances on sparc32 (sun4c)

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Hi all,

I think I have found the cause of the problem.

Commit b46b8f19c9cd435ecac4d9d12b39d78c137ecd66 partially fixed alignment issues but does not ensure that all 64bit alignment requirements of sparc32 are met. Tests have shown that the redzone2 word can become misallignd.

I am currently working on a posible fix.

Regards
	Mark Fortescue.

On Tue, 3 Jul 2007, Michal Piotrowski wrote:

Hi all,

Here is a list of some known regressions in 2.6.22-rc7.

Feel free to add new regressions/remove fixed etc.
http://kernelnewbies.org/known_regressions

List of Aces

Name                    Regressions fixed since 21-Jun-2007
Hugh Dickins                           2
Andi Kleen                             1
Andrew Morton                          1
Benjamin Herrenschmidt                 1
Björn Steinbrink                       1
Bjorn Helgaas                          1
Jean Delvare                           1
Olaf Hering                            1
Siddha, Suresh B                       1
Trent Piepho                           1
Ville Syrjälä                          1



FS

Subject    : 2.6.22-rc4-git5 reiserfs: null ptr deref.
References : http://lkml.org/lkml/2007/6/13/322
Submitter  : Randy Dunlap <randy.dunlap@xxxxxxxxxx>
Handled-By : Vladimir V. Saveliev <vs@xxxxxxxxxxx>
Status     : problem is being debugged



IDE

Subject    : 2.6.22-rcX: hda: lost interrupt
References : http://lkml.org/lkml/2007/6/29/121
Submitter  : David Chinner <dgc@xxxxxxx>
Status     : unknown



Sparc64

Subject    : random invalid instruction occourances on sparc32 (sun4c)
References : http://lkml.org/lkml/2007/6/17/111
Submitter  : Mark Fortescue <mark@xxxxxxxxxxxxxxxxxx>
Status     : problem is being debugged

Subject    : 2.6.22-rc broke X on Ultra5
References : http://lkml.org/lkml/2007/5/22/78
Submitter  : Mikael Pettersson <mikpe@xxxxxxxx>
Handled-By : David Miller <davem@xxxxxxxxxxxxx>
Status     : problem is being debugged



Regards,
Michal

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