Ubuntu
brltty package

brltty crashed with SIGSEGV in asyncDiscardEvent()

Bug #1978521 reported by corrado venturini on 2022-06-14

32

This bug affects 3 people

Affects		Status	Importance	Assigned to	Milestone
	brltty (Ubuntu)	Confirmed	Medium	Unassigned

Bug Description

this problem occurs recurring on every boot

ProblemType: Crash
DistroRelease: Ubuntu 22.10
Package: brltty 6.4-6ubuntu1
ProcVersionSignature: Ubuntu 5.15.0-27.28-generic 5.15.30
Uname: Linux 5.15.0-27-generic x86_64
ApportVersion: 2.21.0-0ubuntu2
Architecture: amd64
CasperMD5CheckResult: pass
CrashCounter: 1
Date: Tue Jun 14 06:24:44 2022
ExecutablePath: /usr/bin/brltty
InstallationDate: Installed on 2022-05-14 (30 days ago)
InstallationMedia: Ubuntu 22.10 "Kinetic Kudu" - Alpha amd64 (20220512)
ProcCmdline: /bin/brltty --no-daemon
SegvAnalysis:
Segfault happened at: 0x5642f400ee48 <runSpeechDriverThread+152>: mov 0x20(%rbp),%rdi
PC (0x5642f400ee48) ok
source "0x20(%rbp)" (0x00000020) not located in a known VMA region (needed readable region)!
destination "%rdi" ok
Stack memory exhausted (SP below stack segment)
SegvReason: reading NULL VMA
Signal: 11
SourcePackage: brltty
StacktraceTop:
runSpeechDriverThread ()
?? ()
start_thread (arg=<optimized out>) at ./nptl/pthread_create.c:442
clone3 () at ../sysdeps/unix/sysv/linux/x86_64/clone3.S:81
Title: brltty crashed with SIGSEGV in runSpeechDriverThread()
UpgradeStatus: No upgrade log present (probably fresh install)
UserGroups: N/A
separator:

Tags:

Revision history for this message

corrado venturini (corradoventu) wrote on 2022-06-14:

#1

Dependencies.txt Edit (3.2 KiB, text/plain; charset="utf-8")
Disassembly.txt Edit (1.2 KiB, text/plain; charset="utf-8")
HookError_generic.txt Edit (927 bytes, text/plain; charset="utf-8")
ProcCpuinfoMinimal.txt Edit (1.3 KiB, text/plain; charset="utf-8")
ProcEnviron.txt Edit (252 bytes, text/plain; charset="utf-8")
ProcMaps.txt Edit (28.5 KiB, text/plain; charset="utf-8")
ProcStatus.txt Edit (1.4 KiB, text/plain; charset="utf-8")
Registers.txt Edit (1.1 KiB, text/plain; charset="utf-8")
Stacktrace.txt Edit (765 bytes, text/plain; charset="utf-8")
ThreadStacktrace.txt Edit (35.0 KiB, text/plain; charset="utf-8")

information type:

Private → Public

Revision history for this message

Apport retracing service (apport) wrote on 2022-06-14:

#2

StacktraceTop:
asyncDiscardEvent (event=0x0) at ../../Programs/async_event.c:147
runSpeechDriverThread (argument=0x5642f4c2b890) at ../../Programs/spk_thread.c:842
runThread (argument=0x5642f4c2bb80) at ../../Programs/thread.c:46
start_thread (arg=<optimized out>) at ./nptl/pthread_create.c:442
clone3 () at ../sysdeps/unix/sysv/linux/x86_64/clone3.S:81

tags:

removed: need-amd64-retrace

Revision history for this message

Launchpad Janitor (janitor) wrote on 2022-06-15:

#3

Status changed to 'Confirmed' because the bug affects multiple users.

Changed in brltty (Ubuntu):
status:	New → Confirmed

Revision history for this message

Apport retracing service (apport) wrote on 2022-06-15:

#4

StacktraceTop:
asyncDiscardEvent (event=0x0) at ../../Programs/async_event.c:147
runSpeechDriverThread (argument=0x5642f4c2b890) at ../../Programs/spk_thread.c:842
runThread (argument=0x5642f4c2bb80) at ../../Programs/thread.c:46
start_thread (arg=<optimized out>) at ./nptl/pthread_create.c:442
clone3 () at ../sysdeps/unix/sysv/linux/x86_64/clone3.S:81

Revision history for this message

Apport retracing service (apport) wrote on 2022-06-15: Stacktrace.txt

#5

Stacktrace.txt Edit (969 bytes, text/plain)

Revision history for this message

Apport retracing service (apport) wrote on 2022-06-15: StacktraceSource.txt

#6

StacktraceSource.txt Edit (1.6 KiB, text/plain)

Revision history for this message

Apport retracing service (apport) wrote on 2022-06-15: ThreadStacktrace.txt

#7

ThreadStacktrace.txt Edit (76.0 KiB, text/plain)

Changed in brltty (Ubuntu):
importance:	Undecided → Medium
summary:	- brltty crashed with SIGSEGV in runSpeechDriverThread() + brltty crashed with SIGSEGV in asyncDiscardEvent()

Revision history for this message

corrado venturini (corradoventu) wrote on 2022-06-25:

#8

brltty crash at each boot also with different symptoms.Today the message is:
brltty crashed with SIGSEGV in runSpeechDriverThread()

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