* dbus-daemon unaligned accesses
@ 2020-01-18 16:06 Bob Tracy
2020-01-18 16:36 ` John Paul Adrian Glaubitz
0 siblings, 1 reply; 6+ messages in thread
From: Bob Tracy @ 2020-01-18 16:06 UTC (permalink / raw)
To: debian-alpha; +Cc: linux-alpha
On my alpha, the system logs are getting spammed with unaligned trap
errors as follows:
[34656.586748] dbus-daemon(700): unaligned trap at 00000200000a9720: 00000000d68c7222 28 18
[34656.599443] dbus-daemon(700): unaligned trap at 00000200000a9720: 00000000d68c7222 28 18
[34656.612138] dbus-daemon(700): unaligned trap at 00000200000a9720: 00000000d68c7222 28 18
[34656.617021] dbus-daemon(700): unaligned trap at 00000200000a9720: 00000000d68c7222 28 18
[34656.624833] dbus-daemon(700): unaligned trap at 00000200000a9720: 00000000d68c7222 28 18
The current "dbus" package version is 1.12.16-2.
If no one else is actively working to fix this annoyance, I'll see what
I can do. For me, it's mostly a matter of finding the time to download
the source package and its dependencies, build a debug version with
symbols in it that "gdb" can use, and then *maybe* figure out the best
way to code around the unaligned access.
If anyone else has the time and would like to have a go at it, the
following two links might be useful:
https://wiki.gentoo.org/wiki/Project:Alpha/Porting_guide#Unaligned_accesses
https://www.redhat.com/archives/axp-list/2000-May/msg00151.html
(Yes, the problem has been around at least as long as the alpha
architecture :-) ).
Michael Cree et al.: do we have a working "gdb" on alpha these days?
I seem to recall brokenness there in the not-too-distant past.
--Bob
^ permalink raw reply [flat|nested] 6+ messages in thread
* Re: dbus-daemon unaligned accesses
2020-01-18 16:06 dbus-daemon unaligned accesses Bob Tracy
@ 2020-01-18 16:36 ` John Paul Adrian Glaubitz
2020-01-18 17:33 ` Witold Baryluk
0 siblings, 1 reply; 6+ messages in thread
From: John Paul Adrian Glaubitz @ 2020-01-18 16:36 UTC (permalink / raw)
To: Bob Tracy, debian-alpha; +Cc: linux-alpha
Hi Bob!
On 1/18/20 5:06 PM, Bob Tracy wrote:
> If no one else is actively working to fix this annoyance, I'll see what
> I can do. For me, it's mostly a matter of finding the time to download
> the source package and its dependencies, build a debug version with
> symbols in it that "gdb" can use, and then *maybe* figure out the best
> way to code around the unaligned access.
I'm busy with a lot of other things but I am well aware of this issue. You
can silence the noise with "dmesg -n1".
Otherwise, it would be greatly appreciated if you could work on a patch to
fix this issue.
Adrian
--
.''`. John Paul Adrian Glaubitz
: :' : Debian Developer - glaubitz@debian.org
`. `' Freie Universitaet Berlin - glaubitz@physik.fu-berlin.de
`- GPG: 62FF 8A75 84E0 2956 9546 0006 7426 3B37 F5B5 F913
^ permalink raw reply [flat|nested] 6+ messages in thread
* Re: dbus-daemon unaligned accesses
2020-01-18 16:36 ` John Paul Adrian Glaubitz
@ 2020-01-18 17:33 ` Witold Baryluk
2020-01-19 5:49 ` Bob Tracy
0 siblings, 1 reply; 6+ messages in thread
From: Witold Baryluk @ 2020-01-18 17:33 UTC (permalink / raw)
To: John Paul Adrian Glaubitz; +Cc: Bob Tracy, debian-alpha, linux-alpha
https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=932381
On Sat, 18 Jan 2020 at 16:36, John Paul Adrian Glaubitz
<glaubitz@physik.fu-berlin.de> wrote:
>
> Hi Bob!
>
> On 1/18/20 5:06 PM, Bob Tracy wrote:
> > If no one else is actively working to fix this annoyance, I'll see what
> > I can do. For me, it's mostly a matter of finding the time to download
> > the source package and its dependencies, build a debug version with
> > symbols in it that "gdb" can use, and then *maybe* figure out the best
> > way to code around the unaligned access.
>
> I'm busy with a lot of other things but I am well aware of this issue. You
> can silence the noise with "dmesg -n1".
>
> Otherwise, it would be greatly appreciated if you could work on a patch to
> fix this issue.
>
> Adrian
>
> --
> .''`. John Paul Adrian Glaubitz
> : :' : Debian Developer - glaubitz@debian.org
> `. `' Freie Universitaet Berlin - glaubitz@physik.fu-berlin.de
> `- GPG: 62FF 8A75 84E0 2956 9546 0006 7426 3B37 F5B5 F913
>
^ permalink raw reply [flat|nested] 6+ messages in thread
* Re: dbus-daemon unaligned accesses
2020-01-18 17:33 ` Witold Baryluk
@ 2020-01-19 5:49 ` Bob Tracy
2020-01-19 15:02 ` Witold Baryluk
2020-01-19 22:42 ` Witold Baryluk
0 siblings, 2 replies; 6+ messages in thread
From: Bob Tracy @ 2020-01-19 5:49 UTC (permalink / raw)
To: Witold Baryluk; +Cc: John Paul Adrian Glaubitz, debian-alpha, linux-alpha
On Sat, Jan 18, 2020 at 05:33:31PM +0000, Witold Baryluk wrote:
> https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=932381
At first glance, that certainly appears to be the issue. The
conversation seems to have stalled-out as of July 2019.
memcpy() looks to be a good way of handling the problem, for the
reasons mentioned. Did you try that fix? If so, did it work for you?
--Bob
^ permalink raw reply [flat|nested] 6+ messages in thread
* Re: dbus-daemon unaligned accesses
2020-01-19 5:49 ` Bob Tracy
@ 2020-01-19 15:02 ` Witold Baryluk
2020-01-19 22:42 ` Witold Baryluk
1 sibling, 0 replies; 6+ messages in thread
From: Witold Baryluk @ 2020-01-19 15:02 UTC (permalink / raw)
To: Bob Tracy; +Cc: John Paul Adrian Glaubitz, debian-alpha, linux-alpha
[-- Attachment #1: Type: text/plain, Size: 598 bytes --]
Yes, it works.
The suggested one line change did work and fixed the issue for me.
I didn't have time to ask for it to be merged.
On Sun, 19 Jan 2020, 06:49 Bob Tracy, <rct@frus.com> wrote:
> On Sat, Jan 18, 2020 at 05:33:31PM +0000, Witold Baryluk wrote:
> > https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=932381
>
> At first glance, that certainly appears to be the issue. The
> conversation seems to have stalled-out as of July 2019.
>
> memcpy() looks to be a good way of handling the problem, for the
> reasons mentioned. Did you try that fix? If so, did it work for you?
>
> --Bob
>
[-- Attachment #2: Type: text/html, Size: 1144 bytes --]
^ permalink raw reply [flat|nested] 6+ messages in thread
* Re: dbus-daemon unaligned accesses
2020-01-19 5:49 ` Bob Tracy
2020-01-19 15:02 ` Witold Baryluk
@ 2020-01-19 22:42 ` Witold Baryluk
1 sibling, 0 replies; 6+ messages in thread
From: Witold Baryluk @ 2020-01-19 22:42 UTC (permalink / raw)
To: Bob Tracy; +Cc: John Paul Adrian Glaubitz, debian-alpha, linux-alpha
Yes, it works.
The suggested one line change did work and fixed the issue for me.
I didn't have time to ask for it to be merged.
On Sun, 19 Jan 2020, 06:49 Bob Tracy, <rct@frus.com> wrote:
>
> On Sat, Jan 18, 2020 at 05:33:31PM +0000, Witold Baryluk wrote:
> > https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=932381
>
> At first glance, that certainly appears to be the issue. The
> conversation seems to have stalled-out as of July 2019.
>
> memcpy() looks to be a good way of handling the problem, for the
> reasons mentioned. Did you try that fix? If so, did it work for you?
>
> --Bob
^ permalink raw reply [flat|nested] 6+ messages in thread
end of thread, other threads:[~2020-01-19 22:42 UTC | newest]
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2020-01-18 16:06 dbus-daemon unaligned accesses Bob Tracy
2020-01-18 16:36 ` John Paul Adrian Glaubitz
2020-01-18 17:33 ` Witold Baryluk
2020-01-19 5:49 ` Bob Tracy
2020-01-19 15:02 ` Witold Baryluk
2020-01-19 22:42 ` Witold Baryluk
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