[systemd-devel] Systemd segv during boot

Lennart Poettering lennart at poettering.net
Mon Sep 10 16:38:54 PDT 2012

On Mon, 03.09.12 09:59, Nicolas Aguirre (aguirre.nicolas at gmail.com) wrote:

> Hi
> I'm using Angstrom and systemd (v44) on an ARM custom board. (TI OMAP3
> Cortex a8)
> Sometimes (around 1 time on 100) I get a systemd segv during the boot,
> otherwise the system boots fine and everything is OK.
> I'm using a RO file sysytem on a UBI/UBIFS partition.
> I dont know how to go further and see why a segv happened (how to get a
> backtrace for example), You maybe  will have ideas about how to debug this
> issue ?

If your root disk is writable you should automatically get a coredump in
the root dir. On SIGSEGV PID 1 will fork and create that coredump in the
child, so expect this coredump to belong to another PID than 1.

> Caught <SEGV>, core dump failed.
> Freezing execution.

This suggests that your root dir was not writable hence the coredumo
could not be generated.


Lennart Poettering - Red Hat, Inc.

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