>From FFADO maintainer:
Bug: segfault in "ffado-test Discover"
Suggestion:
The reporter acknowledges that prior to running ffado-test "there
already were problems with the Firewire connection". The crash is
associated with a bus reset. While bus resets should be handled
cleanly by FFADO, it is not always the case. In a properly
functioning system there should be no sporadic bus resets. Bus
resets normally occur when the bus topography changes (a device is
added or removed for example).
It seems that the system is experiencing frequent bus resets. This
most likely indicates a hardware fault. This could be in the audio
device, the firewire cable or the firewire card in the computer.
The first thing to try is a different firewire cable from a reputable
manufacturer. There were many dodgy firewire cables made, and bad
cables can give rise to all kinds of strange problems.
Another option is a firewire card which isn't up to the task of
managing the datastream associated with an audio interface. This is
unlikely to be the cause here though, since the fault is occurring
during device probing which isn't particularly taxing on the firewire
bus.
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https://bugs.launchpad.net/bugs/1714250
Title:
ffado-test-streaming crashed with SIGSEGV in __GI___libc_free()
Status in libffado package in Ubuntu:
New
Bug description:
Just called ffado-test-streaming on the current setup (one builtin
Ricoh Firewire controller without attached hardware, one Expresscard
with TI chipset and an Alesis io|14 attached) and it crashed after
some test duration, apparently before wanting to exit.
ProblemType: Crash
DistroRelease: Ubuntu 17.10
Package: ffado-tools 2.3.0-2
ProcVersionSignature: Ubuntu 4.12.0-11.12-lowlatency 4.12.5
Uname: Linux 4.12.0-11-lowlatency x86_64
ApportVersion: 2.20.7-0ubuntu1
Architecture: amd64
CrashCounter: 1
Date: Thu Aug 31 15:28:05 2017
ExecutablePath: /usr/bin/ffado-test-streaming
InstallationDate: Installed on 2011-10-14 (2148 days ago)
InstallationMedia: Ubuntu 11.10 "Oneiric Ocelot" - Release i386 (20111011)
ProcCmdline: ffado-test-streaming
SegvAnalysis:
Segfault happened at: 0x7f25bb6b9d32 <__GI___libc_free+34>: mov
-0x8(%rdi),%rax
PC (0x7f25bb6b9d32) ok
source "-0x8(%rdi)" (0x000003f9) not located in a known VMA region (needed
readable region)!
destination "%rax" ok
SegvReason: reading NULL VMA
Signal: 11
SourcePackage: libffado
StacktraceTop:
__GI___libc_free (mem=0x401) at malloc.c:2966
()
__libc_start_main (main=0xf6ba13cd97, argc=1, argv=0x7ffc0fddf5f8,
init=<optimized out>, fini=<optimized out>, rtld_fini=<optimized out>,
stack_end=0x7ffc0fddf5e8) at ../csu/libc-start.c:291
()
Title: ffado-test-streaming crashed with SIGSEGV in __GI___libc_free()
UpgradeStatus: No upgrade log present (probably fresh install)
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