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From: "vries at gcc dot gnu.org" <sourceware-bugzilla@sourceware.org>
To: gdb-prs@sourceware.org
Subject: [Bug external/31442] [gdb/external, arm, SIGILL] FAIL:
 gdb.threads/sigstep-threads.exp: step 92
Date: Tue, 05 Mar 2024 16:41:19 +0000
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https://sourceware.org/bugzilla/show_bug.cgi?id=3D31442

Tom de Vries <vries at gcc dot gnu.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
         Resolution|---                         |MOVED
             Status|NEW                         |RESOLVED
            Summary|[gdb/tdep, arm, SIGILL]     |[gdb/external, arm, SIGILL]
                   |FAIL:                       |FAIL:
                   |gdb.threads/sigstep-threads |gdb.threads/sigstep-threads
                   |.exp: step 92               |.exp: step 92
          Component|tdep                        |external

--- Comment #2 from Tom de Vries <vries at gcc dot gnu.org> ---
(In reply to Tom de Vries from comment #1)
> I looked into upgrading the kernel to 6.1, but it seems that this is
> difficult because /boot is read-only due to being flash, so I'm avoiding
> that for now.

I gave it a try, and ... was left with an non-booting system.

I managed to recover by booting from an sd card (which involved opening the
laptop to recover the micro sd card that slid next to rather than into the
slot).

Then I managed to overwrite the broken installation on the hard-disk and ch=
ose
the manjaro distro, because it's supposedly the best supported distro for
pinebook pro.  That got me a 6.1.x kernel, which after upgrading got me a 6=
.6.7
kernel.=20

The manjaro install also got me a 64-bit kernel + 64-bit user land.

I managed to build a chroot with 32-bit debian, which is about as close as I
can get to the old 64-bit kernel + 32-bit userland setup. [ I used arch-chr=
oot,
hand-edited to unset pid_unshare and mount_unshare, otherwise we run into
warnings due to not finding /proc/PID/mem. ]

I ran this test-case a 100 times, and the problem doesn't reproduce.

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