* [Qemu-devel] [Bug 1625295] Re: qemu-arm dies with libarmmem inside ld.so.preload
2016-09-19 17:40 [Qemu-devel] [Bug 1625295] [NEW] qemu-arm dies with libarmmem inside ld.so.preload Stu
@ 2016-09-19 20:27 ` Peter Maydell
2016-09-19 23:02 ` Stu
2016-09-20 10:22 ` Peter Maydell
` (7 subsequent siblings)
8 siblings, 1 reply; 17+ messages in thread
From: Peter Maydell @ 2016-09-19 20:27 UTC (permalink / raw)
To: qemu-devel
Which version of QEMU are you using? This is I think due to SETEND
emulation, which I thought we had implemented now.
If this still doesn't work on QEMU 2.7, please can you provide full
instructions to reproduce the problem (assume I know nothing about how
to get raspbian or run it on QEMU).
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https://bugs.launchpad.net/bugs/1625295
Title:
qemu-arm dies with libarmmem inside ld.so.preload
Status in QEMU:
New
Bug description:
When running raspbian inside qemu,the user has to first comment out
the following line from /etc/ld.so.conf:
/usr/lib/arm-linux-gnueabihf/libarmmem.so
Will future qemus will be able to work without changine /etc/ld.so.conf ?
To manage notifications about this bug go to:
https://bugs.launchpad.net/qemu/+bug/1625295/+subscriptions
^ permalink raw reply [flat|nested] 17+ messages in thread* Re: [Qemu-devel] [Bug 1625295] Re: qemu-arm dies with libarmmem inside ld.so.preload
2016-09-19 20:27 ` [Qemu-devel] [Bug 1625295] " Peter Maydell
@ 2016-09-19 23:02 ` Stu
2016-09-20 9:26 ` Peter Maydell
0 siblings, 1 reply; 17+ messages in thread
From: Stu @ 2016-09-19 23:02 UTC (permalink / raw)
To: qemu-devel
- I'm on Ubuntu 16.04, and it looks like it's 2.6.1
qemu-arm version 2.6.1 (Debian 1:2.6.1+dfsg-0~16.04), Copyright (c)
2003-2008 Fabrice Bellard
Is there a PPA for qemu 2.7 somewhere ?
On 19 September 2016 at 21:27, Peter Maydell <peter.maydell@linaro.org>
wrote:
> Which version of QEMU are you using? This is I think due to SETEND
> emulation, which I thought we had implemented now.
>
> If this still doesn't work on QEMU 2.7, please can you provide full
> instructions to reproduce the problem (assume I know nothing about how
> to get raspbian or run it on QEMU).
>
> --
> You received this bug notification because you are subscribed to the bug
> report.
> https://bugs.launchpad.net/bugs/1625295
>
> Title:
> qemu-arm dies with libarmmem inside ld.so.preload
>
> To manage notifications about this bug go to:
> https://bugs.launchpad.net/qemu/+bug/1625295/+subscriptions
>
--
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https://bugs.launchpad.net/bugs/1625295
Title:
qemu-arm dies with libarmmem inside ld.so.preload
Status in QEMU:
New
Bug description:
When running raspbian inside qemu,the user has to first comment out
the following line from /etc/ld.so.conf:
/usr/lib/arm-linux-gnueabihf/libarmmem.so
Will future qemus will be able to work without changine /etc/ld.so.conf ?
To manage notifications about this bug go to:
https://bugs.launchpad.net/qemu/+bug/1625295/+subscriptions
^ permalink raw reply [flat|nested] 17+ messages in thread
* Re: [Qemu-devel] [Bug 1625295] Re: qemu-arm dies with libarmmem inside ld.so.preload
2016-09-19 23:02 ` Stu
@ 2016-09-20 9:26 ` Peter Maydell
2016-09-20 9:53 ` Stu
0 siblings, 1 reply; 17+ messages in thread
From: Peter Maydell @ 2016-09-20 9:26 UTC (permalink / raw)
To: Bug 1625295; +Cc: QEMU Developers
On 20 September 2016 at 00:02, Stu <stu.axon@gmail.com> wrote:
> - I'm on Ubuntu 16.04, and it looks like it's 2.6.1
>
> qemu-arm version 2.6.1 (Debian 1:2.6.1+dfsg-0~16.04), Copyright (c)
> 2003-2008 Fabrice Bellard
>
> Is there a PPA for qemu 2.7 somewhere ?
You'd need to ask the Ubuntu folks about that. Upstream
we provide source code distributions only.
thanks
-- PMM
^ permalink raw reply [flat|nested] 17+ messages in thread
* Re: [Qemu-devel] [Bug 1625295] Re: qemu-arm dies with libarmmem inside ld.so.preload
2016-09-20 9:26 ` Peter Maydell
@ 2016-09-20 9:53 ` Stu
0 siblings, 0 replies; 17+ messages in thread
From: Stu @ 2016-09-20 9:53 UTC (permalink / raw)
To: qemu-devel
Cheers :)
May as well close this, I'll re-open it if I try 2.7 and find the same
bug.
Testing involves trying stock raspbian in qemu.
On 20 September 2016 at 10:26, Peter Maydell <peter.maydell@linaro.org>
wrote:
> On 20 September 2016 at 00:02, Stu <stu.axon@gmail.com> wrote:
> > - I'm on Ubuntu 16.04, and it looks like it's 2.6.1
> >
> > qemu-arm version 2.6.1 (Debian 1:2.6.1+dfsg-0~16.04), Copyright (c)
> > 2003-2008 Fabrice Bellard
> >
> > Is there a PPA for qemu 2.7 somewhere ?
>
> You'd need to ask the Ubuntu folks about that. Upstream
> we provide source code distributions only.
>
> thanks
> -- PMM
>
> --
> You received this bug notification because you are subscribed to the bug
> report.
> https://bugs.launchpad.net/bugs/1625295
>
> Title:
> qemu-arm dies with libarmmem inside ld.so.preload
>
> To manage notifications about this bug go to:
> https://bugs.launchpad.net/qemu/+bug/1625295/+subscriptions
>
--
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https://bugs.launchpad.net/bugs/1625295
Title:
qemu-arm dies with libarmmem inside ld.so.preload
Status in QEMU:
New
Bug description:
When running raspbian inside qemu,the user has to first comment out
the following line from /etc/ld.so.conf:
/usr/lib/arm-linux-gnueabihf/libarmmem.so
Will future qemus will be able to work without changine /etc/ld.so.conf ?
To manage notifications about this bug go to:
https://bugs.launchpad.net/qemu/+bug/1625295/+subscriptions
^ permalink raw reply [flat|nested] 17+ messages in thread
* [Qemu-devel] [Bug 1625295] Re: qemu-arm dies with libarmmem inside ld.so.preload
2016-09-19 17:40 [Qemu-devel] [Bug 1625295] [NEW] qemu-arm dies with libarmmem inside ld.so.preload Stu
2016-09-19 20:27 ` [Qemu-devel] [Bug 1625295] " Peter Maydell
@ 2016-09-20 10:22 ` Peter Maydell
2016-09-20 12:50 ` Stu
2016-09-20 13:29 ` Peter Maydell
` (6 subsequent siblings)
8 siblings, 1 reply; 17+ messages in thread
From: Peter Maydell @ 2016-09-20 10:22 UTC (permalink / raw)
To: qemu-devel
As I say, for providing reproduction instructions you have to assume I
know nothing about raspbian, so "trying stock raspbian in qemu" is not
detailed enough. I was looking for details more like "download this
particular image from this website and then run this specific QEMU
commandline, and then in the guest do <this thing> and it fails in <this
way>".
--
You received this bug notification because you are a member of qemu-
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https://bugs.launchpad.net/bugs/1625295
Title:
qemu-arm dies with libarmmem inside ld.so.preload
Status in QEMU:
New
Bug description:
When running raspbian inside qemu,the user has to first comment out
the following line from /etc/ld.so.conf:
/usr/lib/arm-linux-gnueabihf/libarmmem.so
Will future qemus will be able to work without changine /etc/ld.so.conf ?
To manage notifications about this bug go to:
https://bugs.launchpad.net/qemu/+bug/1625295/+subscriptions
^ permalink raw reply [flat|nested] 17+ messages in thread* Re: [Qemu-devel] [Bug 1625295] Re: qemu-arm dies with libarmmem inside ld.so.preload
2016-09-20 10:22 ` Peter Maydell
@ 2016-09-20 12:50 ` Stu
0 siblings, 0 replies; 17+ messages in thread
From: Stu @ 2016-09-20 12:50 UTC (permalink / raw)
To: qemu-devel
Are bash scripts OK ?
I put everything into some scripts - I'm on ubuntu, debian should be
similar - not sure about other platforms.
# Grab scripts
$ git clone https://github.com/stuaxo/raspbian-qemu-scripts
$ cd raspbian-qemu-scripts
# Download current raspbian lite to /tmp/raspbian:
$ ./download-raspbian.sh
# Test that may fail - run
/tmp/raspbian/2016-05-27-raspbian-jessie-lite.img in qemu:
$ ./run_qemu.sh
# If the above fails, then it's you can edit /etc/ld.so.preload ---
$ ./mount-raspbian.sh
^ mounts the image to /tmp/raspbian/
Now edit the file /tmp/raspbian/etc/ld.so.preload and comment any lines,
e.g
$ sudo nano -w /tmp/raspbian/mnt/etc/ld.so.preload
$ umount /tmp/raspbian
## Test again in qemu
$ ./run_qemu.sh
One I get do the edit, qemu works for me.
To get chroot working, one has to mount the image and copy the file
$ ./mount-raspbian.sh
$ sudo cp /usr/bin/qemu-arm-static /tmp/raspbian/mnt/usr/bin
# After that chroot works...
$ sudo chroot /tmp/raspbian/mnt
-- Remember to umount the image before using qemu + but mount for chroot
:)
On 20 September 2016 at 11:22, Peter Maydell <peter.maydell@linaro.org>
wrote:
> As I say, for providing reproduction instructions you have to assume I
> know nothing about raspbian, so "trying stock raspbian in qemu" is not
> detailed enough. I was looking for details more like "download this
> particular image from this website and then run this specific QEMU
> commandline, and then in the guest do <this thing> and it fails in <this
> way>".
>
> --
> You received this bug notification because you are subscribed to the bug
> report.
> https://bugs.launchpad.net/bugs/1625295
>
> Title:
> qemu-arm dies with libarmmem inside ld.so.preload
>
> To manage notifications about this bug go to:
> https://bugs.launchpad.net/qemu/+bug/1625295/+subscriptions
>
--
You received this bug notification because you are a member of qemu-
devel-ml, which is subscribed to QEMU.
https://bugs.launchpad.net/bugs/1625295
Title:
qemu-arm dies with libarmmem inside ld.so.preload
Status in QEMU:
New
Bug description:
When running raspbian inside qemu,the user has to first comment out
the following line from /etc/ld.so.conf:
/usr/lib/arm-linux-gnueabihf/libarmmem.so
Will future qemus will be able to work without changine /etc/ld.so.conf ?
To manage notifications about this bug go to:
https://bugs.launchpad.net/qemu/+bug/1625295/+subscriptions
^ permalink raw reply [flat|nested] 17+ messages in thread
* [Qemu-devel] [Bug 1625295] Re: qemu-arm dies with libarmmem inside ld.so.preload
2016-09-19 17:40 [Qemu-devel] [Bug 1625295] [NEW] qemu-arm dies with libarmmem inside ld.so.preload Stu
2016-09-19 20:27 ` [Qemu-devel] [Bug 1625295] " Peter Maydell
2016-09-20 10:22 ` Peter Maydell
@ 2016-09-20 13:29 ` Peter Maydell
2016-09-20 13:41 ` Stu
2016-09-20 13:47 ` Peter Maydell
` (5 subsequent siblings)
8 siblings, 1 reply; 17+ messages in thread
From: Peter Maydell @ 2016-09-20 13:29 UTC (permalink / raw)
To: qemu-devel
Thanks. I can reproduce this with the current QEMU, so there is still a
problem of some kind here.
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https://bugs.launchpad.net/bugs/1625295
Title:
qemu-arm dies with libarmmem inside ld.so.preload
Status in QEMU:
New
Bug description:
When running raspbian inside qemu,the user has to first comment out
the following line from /etc/ld.so.conf:
/usr/lib/arm-linux-gnueabihf/libarmmem.so
Will future qemus will be able to work without changine /etc/ld.so.conf ?
To manage notifications about this bug go to:
https://bugs.launchpad.net/qemu/+bug/1625295/+subscriptions
^ permalink raw reply [flat|nested] 17+ messages in thread* [Qemu-devel] [Bug 1625295] Re: qemu-arm dies with libarmmem inside ld.so.preload
2016-09-19 17:40 [Qemu-devel] [Bug 1625295] [NEW] qemu-arm dies with libarmmem inside ld.so.preload Stu
` (2 preceding siblings ...)
2016-09-20 13:29 ` Peter Maydell
@ 2016-09-20 13:47 ` Peter Maydell
2016-09-20 14:27 ` Peter Maydell
` (4 subsequent siblings)
8 siblings, 0 replies; 17+ messages in thread
From: Peter Maydell @ 2016-09-20 13:47 UTC (permalink / raw)
To: qemu-devel
This turns out to be nothing to do with setend. We're doing something wrong emulating the following nasty hack:
https://github.com/bavison/arm-mem/blob/master/architecture.S
.arm
architecture:
sub pc, pc, #1 @ is an interworking branch on ARMv7, not ARMv6
and a1, a4, a1 @ second word interpreted as 'B .+0xA' if Thumb
mov a1, #6
bx lr
.thumb
mov a1, #7
bx lr
so after the 'sub pc, pc, #1' (which in my debug trace is at address
0xb6f086dc) QEMU next tries to execute from 0xb6f086e2 in ARM mode,
which is neither of the two expected outcomes. As it happens we hit an
undefined instruction pretty much immediately afterwards:
0xb6f086e2: 0006e003 andeq lr, r6, r3
0xb6f086e6: ff1ee3a0 undefined instruction 0xff1ee3a0
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https://bugs.launchpad.net/bugs/1625295
Title:
qemu-arm dies with libarmmem inside ld.so.preload
Status in QEMU:
New
Bug description:
When running raspbian inside qemu,the user has to first comment out
the following line from /etc/ld.so.conf:
/usr/lib/arm-linux-gnueabihf/libarmmem.so
Will future qemus will be able to work without changine /etc/ld.so.conf ?
To manage notifications about this bug go to:
https://bugs.launchpad.net/qemu/+bug/1625295/+subscriptions
^ permalink raw reply [flat|nested] 17+ messages in thread* [Qemu-devel] [Bug 1625295] Re: qemu-arm dies with libarmmem inside ld.so.preload
2016-09-19 17:40 [Qemu-devel] [Bug 1625295] [NEW] qemu-arm dies with libarmmem inside ld.so.preload Stu
` (3 preceding siblings ...)
2016-09-20 13:47 ` Peter Maydell
@ 2016-09-20 14:27 ` Peter Maydell
2016-10-04 14:55 ` Peter Maydell
` (3 subsequent siblings)
8 siblings, 0 replies; 17+ messages in thread
From: Peter Maydell @ 2016-09-20 14:27 UTC (permalink / raw)
To: qemu-devel
Patch which fixes this: http://patchwork.ozlabs.org/patch/672288/
** Changed in: qemu
Status: New => In Progress
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https://bugs.launchpad.net/bugs/1625295
Title:
qemu-arm dies with libarmmem inside ld.so.preload
Status in QEMU:
In Progress
Bug description:
When running raspbian inside qemu,the user has to first comment out
the following line from /etc/ld.so.conf:
/usr/lib/arm-linux-gnueabihf/libarmmem.so
Will future qemus will be able to work without changine /etc/ld.so.conf ?
To manage notifications about this bug go to:
https://bugs.launchpad.net/qemu/+bug/1625295/+subscriptions
^ permalink raw reply [flat|nested] 17+ messages in thread* [Qemu-devel] [Bug 1625295] Re: qemu-arm dies with libarmmem inside ld.so.preload
2016-09-19 17:40 [Qemu-devel] [Bug 1625295] [NEW] qemu-arm dies with libarmmem inside ld.so.preload Stu
` (4 preceding siblings ...)
2016-09-20 14:27 ` Peter Maydell
@ 2016-10-04 14:55 ` Peter Maydell
2016-10-05 10:11 ` Stu
2016-10-19 23:52 ` Stu
` (2 subsequent siblings)
8 siblings, 1 reply; 17+ messages in thread
From: Peter Maydell @ 2016-10-04 14:55 UTC (permalink / raw)
To: qemu-devel
Now fixed in QEMU master, commit 9b6a3ea7a69959416.
** Changed in: qemu
Status: In Progress => Fix Committed
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https://bugs.launchpad.net/bugs/1625295
Title:
qemu-arm dies with libarmmem inside ld.so.preload
Status in QEMU:
Fix Committed
Bug description:
When running raspbian inside qemu,the user has to first comment out
the following line from /etc/ld.so.conf:
/usr/lib/arm-linux-gnueabihf/libarmmem.so
Will future qemus will be able to work without changine /etc/ld.so.conf ?
To manage notifications about this bug go to:
https://bugs.launchpad.net/qemu/+bug/1625295/+subscriptions
^ permalink raw reply [flat|nested] 17+ messages in thread* [Qemu-devel] [Bug 1625295] Re: qemu-arm dies with libarmmem inside ld.so.preload
2016-09-19 17:40 [Qemu-devel] [Bug 1625295] [NEW] qemu-arm dies with libarmmem inside ld.so.preload Stu
` (5 preceding siblings ...)
2016-10-04 14:55 ` Peter Maydell
@ 2016-10-19 23:52 ` Stu
2016-10-20 7:41 ` Peter Maydell
2017-01-11 6:54 ` Thomas Huth
8 siblings, 0 replies; 17+ messages in thread
From: Stu @ 2016-10-19 23:52 UTC (permalink / raw)
To: qemu-devel
Quick followup on this, finally got the time to build this + can
confirming I can boot raspbian with the default /etc/ld.so.conf to the
command prompt (both raspbian jessie lite and the default distro).
--
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https://bugs.launchpad.net/bugs/1625295
Title:
qemu-arm dies with libarmmem inside ld.so.preload
Status in QEMU:
Fix Committed
Bug description:
When running raspbian inside qemu,the user has to first comment out
the following line from /etc/ld.so.conf:
/usr/lib/arm-linux-gnueabihf/libarmmem.so
Will future qemus will be able to work without changine /etc/ld.so.conf ?
To manage notifications about this bug go to:
https://bugs.launchpad.net/qemu/+bug/1625295/+subscriptions
^ permalink raw reply [flat|nested] 17+ messages in thread* [Qemu-devel] [Bug 1625295] Re: qemu-arm dies with libarmmem inside ld.so.preload
2016-09-19 17:40 [Qemu-devel] [Bug 1625295] [NEW] qemu-arm dies with libarmmem inside ld.so.preload Stu
` (6 preceding siblings ...)
2016-10-19 23:52 ` Stu
@ 2016-10-20 7:41 ` Peter Maydell
2016-10-20 10:18 ` Stu
2017-01-11 6:54 ` Thomas Huth
8 siblings, 1 reply; 17+ messages in thread
From: Peter Maydell @ 2016-10-20 7:41 UTC (permalink / raw)
To: qemu-devel
NB that commit 9b6a3ea7a69959416 had a bug (it broke exception return to
Thumb code), so you should also make sure you have commit fb0e8e79a9d77
which fixes that bug.
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https://bugs.launchpad.net/bugs/1625295
Title:
qemu-arm dies with libarmmem inside ld.so.preload
Status in QEMU:
Fix Committed
Bug description:
When running raspbian inside qemu,the user has to first comment out
the following line from /etc/ld.so.conf:
/usr/lib/arm-linux-gnueabihf/libarmmem.so
Will future qemus will be able to work without changine /etc/ld.so.conf ?
To manage notifications about this bug go to:
https://bugs.launchpad.net/qemu/+bug/1625295/+subscriptions
^ permalink raw reply [flat|nested] 17+ messages in thread* [Qemu-devel] [Bug 1625295] Re: qemu-arm dies with libarmmem inside ld.so.preload
2016-09-19 17:40 [Qemu-devel] [Bug 1625295] [NEW] qemu-arm dies with libarmmem inside ld.so.preload Stu
` (7 preceding siblings ...)
2016-10-20 7:41 ` Peter Maydell
@ 2017-01-11 6:54 ` Thomas Huth
8 siblings, 0 replies; 17+ messages in thread
From: Thomas Huth @ 2017-01-11 6:54 UTC (permalink / raw)
To: qemu-devel
Released with version 2.8
** Changed in: qemu
Status: Fix Committed => Fix Released
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Title:
qemu-arm dies with libarmmem inside ld.so.preload
Status in QEMU:
Fix Released
Bug description:
When running raspbian inside qemu,the user has to first comment out
the following line from /etc/ld.so.conf:
/usr/lib/arm-linux-gnueabihf/libarmmem.so
Will future qemus will be able to work without changine /etc/ld.so.conf ?
To manage notifications about this bug go to:
https://bugs.launchpad.net/qemu/+bug/1625295/+subscriptions
^ permalink raw reply [flat|nested] 17+ messages in thread