functracer fails to run on Panda

Bug #832686 reported by Avik Sil on 2011-08-24
This bug affects 1 person
Affects Status Importance Assigned to Milestone
Linaro Ubuntu
Riku Voipio

Bug Description

maemo functracer tool fails to run on Panda:

# functracer -r -s uname
version=2.0, arch=armv7l, timestamp=24.08.2011 11:23:41, process=uname, pid=1364, backtrace depth=10, origin=functracer 1.2.1,
<1> : memory (memory allocation in bytes)
Process/Thread 1364 (uname) was created
functracer: ssol.c:89: syscall_remote: Assertion `ret == proc->pid && ((((__extension__ (((union { __typeof(status) __in; int __i; }) { .__in = (status) }).__i))) & 0xff) == 0x.

Changed in linaro-ubuntu:
importance: Undecided → Medium
status: New → Confirmed
milestone: none → 11.08
Changed in linaro-ubuntu:
milestone: 11.08 → 11.09
Changed in linaro-ubuntu:
milestone: 11.09 → 11.10
Fathi Boudra (fboudra) on 2011-11-11
Changed in linaro-ubuntu:
milestone: 11.10 → 11.11
Changed in linaro-ubuntu:
assignee: nobody → Avik Sil (aviksil)
milestone: 11.11 → none
Eero Tamminen (oak-helsinkinet) wrote :

Siarhei had a Panda board with Gentoo where he could reproduce and fix this issue[1]. The new Functracer v1.4 release has now proper Thumb2 support:

Could you test that Functracer works now fine also with Ubuntu ARM?

[1] The issue was completely broken Thumb instruction set support. Functracer originates from Maemo & MeeGo/Harmattan which don't build for Thumb instruction set like Ubuntu does, so Functracer's preliminary Thumb support was besides broken, also completely untested.

Fathi Boudra (fboudra) on 2012-06-13
Changed in linaro-ubuntu:
milestone: none → 12.06
Fathi Boudra (fboudra) wrote :

It requires libunwind, which isn't built on Ubuntu Precise/ARMHF.

Avik Sil (aviksil) wrote :

libunwind is not available for armel/armhf

Fathi Boudra (fboudra) wrote :

Set importance to wishlist. We need to make libunwind available in our PPA and then retry functracer.

Changed in linaro-ubuntu:
assignee: Avik Sil (aviksil) → Fathi Boudra (fboudra)
importance: Medium → Wishlist
milestone: 12.06 → 12.07
Eero Tamminen (oak-helsinkinet) wrote :

> It requires libunwind, which isn't built on Ubuntu Precise/ARMHF.
> libunwind is not available for armel/armhf

Debian has an ancient v0.99 libunwind version, which doesn't support ARM.

You need to update the code in the Debian package to a newer libunwind release:

Which do have proper ARM support.

> We need to make libunwind available in our PPA and then retry functracer.

Functracer sources contain a dejagnu based testsuite for checking that catching the function calls and the basic functionality works.

Changed in linaro-ubuntu:
milestone: 12.07 → 12.08
Changed in linaro-ubuntu:
assignee: Fathi Boudra (fboudra) → Riku Voipio (riku-voipio)
milestone: 12.08 → 12.09
Riku Voipio (riku-voipio) wrote :

I've verified this fixed with the Functracer 1.4 just pushed to linaro overlay ppa:

sp-rtrace and libunwind was updated at the same time.

Changed in linaro-ubuntu:
status: Confirmed → Fix Committed
Changed in linaro-ubuntu:
status: Fix Committed → Fix Released
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