Public bug reported:
Description: Ubuntu 20.04.1 LTS
Release: 20.04
Package libx265-179 version 3.2.1-1build1
Happens randomly under both FFMpeg and HandBrakeCLI. An encode of the
same file will crash one time, but work the next time.
Excerpt from the crash file:
SegvAnalysis:
Segfault happened at: 0x7f0613a1f3a0
<_ZN10x265_10bit11RateControl18rateEstimateQscaleEPNS_5FrameEPNS_16RateControlEntryE+112>:
mov (%r8),%rcx
PC (0x7f0613a1f3a0) ok
source "(%r8)" (0x00000000) not located in a known VMA region (needed readable
region)!
destination "%rcx" ok
Stack memory exhausted (SP below stack segment)
SegvReason: reading NULL VMA
SourcePackage: ffmpeg
Stacktrace:
#0 0x00007f0613a1f3a0 in
x265_10bit::RateControl::rateEstimateQscale(x265_10bit::Frame*,
x265_10bit::RateControlEntry*) () at /lib/x86_64-linux-gnu/libx265.so.179
#1 0x00007f0613a21678 in
x265_10bit::RateControl::rateControlStart(x265_10bit::Frame*,
x265_10bit::RateControlEntry*, x265_10bit::Encoder*) () at
/lib/x86_64-linux-gnu/libx265.so.179
#2 0x00007f0613a12fc1 in x265_10bit::FrameEncoder::compressFrame() () at
/lib/x86_64-linux-gnu/libx265.so.179
#3 0x00007f0613a1592a in x265_10bit::FrameEncoder::threadMain() () at
/lib/x86_64-linux-gnu/libx265.so.179
#4 0x00007f06139ec52e in () at /lib/x86_64-linux-gnu/libx265.so.179
#5 0x00007f061a321609 in start_thread (arg=<optimized out>) at
pthread_create.c:477
ret = <optimized out>
pd = <optimized out>
unwind_buf = {cancel_jmp_buf = {{jmp_buf = {139663137658624,
8136522380067276986, 140736498594622, 140736498594623, 140736498594624,
139663137653696, -8151220019210155846, -8149668580039915334}, mask_was_saved =
0}}, priv = {pad = {0x0, 0x0, 0x0, 0x0}, data = {prev = 0x0, cleanup = 0x0,
canceltype = 0}}}
not_first_call = 0
#6 0x00007f061a248293 in clone () at
../sysdeps/unix/sysv/linux/x86_64/clone.S:95
StacktraceAddressSignature:
/usr/bin/ffmpeg:11:/usr/lib/x86_64-linux-gnu/libx265.so.179+4f63a0:/usr/lib/x86_64-linux-gnu/libx265.so.179+4f8678:/usr/lib/x86_64-linux-gnu/libx265.so.179+4e9fc1:/usr/lib/x86_64-linux-gnu/libx265.so.179+4ec92a:/usr/lib/x86_64-linux-gnu/libx265.so.179+4c352e:/usr/lib/x86_64-linux-gnu/libpthread-2.31.so+2609:/usr/lib/x86_64-linux-gnu/libc-2.31.so+fd293
StacktraceTop:
x265_10bit::RateControl::rateEstimateQscale(x265_10bit::Frame*,
x265_10bit::RateControlEntry*) () at /lib/x86_64-linux-gnu/libx265.so.179
x265_10bit::RateControl::rateControlStart(x265_10bit::Frame*,
x265_10bit::RateControlEntry*, x265_10bit::Encoder*) () at
/lib/x86_64-linux-gnu/libx265.so.179
x265_10bit::FrameEncoder::compressFrame() () at
/lib/x86_64-linux-gnu/libx265.so.179
x265_10bit::FrameEncoder::threadMain() () at
/lib/x86_64-linux-gnu/libx265.so.179
() at /lib/x86_64-linux-gnu/libx265.so.179
ProblemType: Bug
DistroRelease: Ubuntu 20.04
Package: x265 3.2.1-1build1
ProcVersionSignature: Ubuntu 5.4.0-58.64-generic 5.4.73
Uname: Linux 5.4.0-58-generic x86_64
NonfreeKernelModules: wl
ApportVersion: 2.20.11-0ubuntu27.14
Architecture: amd64
CasperMD5CheckResult: skip
CurrentDesktop: XFCE
Date: Sun Jan 3 18:49:17 2021
InstallationDate: Installed on 2020-12-26 (8 days ago)
InstallationMedia: Xubuntu 20.04.1 LTS "Focal Fossa" - Release amd64 (20200731)
ProcEnviron:
LANGUAGE=en_US
PATH=(custom, no user)
XDG_RUNTIME_DIR=<set>
LANG=en_US.UTF-8
SHELL=/bin/bash
SourcePackage: x265
UpgradeStatus: No upgrade log present (probably fresh install)
** Affects: x265 (Ubuntu)
Importance: Undecided
Status: New
** Tags: amd64 apport-bug focal
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https://bugs.launchpad.net/bugs/1909949
Title:
SIGSEGV in x265_10bit::RateControl::rateEstimateQscale()
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