1693536 - Crash in [@ __memmove_avx_unaligned_erms | webrtc::BaseCapturerPipeWire::HandleBuffer]

Status: RESOLVED WORKSFORME

(Core :: WebRTC, defect, P3)

Description

[Sean Feng [:sefeng]]

Crash report: https://crash-stats.mozilla.org/report/index/13168acc-a7f2-46b0-a8c3-9af900210218

Reason: SIGSEGV /SEGV_ACCERR

Top 7 frames of crashing thread:

0 libc.so.6 __memmove_avx_unaligned_erms 
1 libxul.so webrtc::BaseCapturerPipeWire::HandleBuffer /build/firefox/src/firefox-85.0.2/third_party/libwebrtc/webrtc/modules/desktop_capture/linux/base_capturer_pipewire.cc:430
2 libxul.so webrtc::BaseCapturerPipeWire::OnStreamProcess /build/firefox/src/firefox-85.0.2/third_party/libwebrtc/webrtc/modules/desktop_capture/linux/base_capturer_pipewire.cc:163
3 libpipewire-0.3.so.0 libpipewire-0.3.so.0@0x621f7 
4 libspa-support.so libspa-support.so@0x4dd5 
5 libspa-support.so libspa-support.so@0x3fed 
6 libspa-support.so libspa-support.so@0x621a 

This is a low crash. Looks like the code failed to do a memory move operation, however, I checked a few crash reports and they all seemed to have a decent amount of memory left.

Comment 1

[Michael Froman [:mjf]]

We're mid-update for libwebrtc, I'll call this a p3 until we see if the update helps since it is low volume.

Comment 2

[Ernst Sjostrand]

I ran into this with 88.0b9
https://crash-stats.mozilla.org/report/index/d9b222bd-f9a4-4331-bcfb-2fa9e0210413

Comment 3

[Ernst Sjostrand]

This is probably related to
gsettings set org.gnome.mutter experimental-features "['dma-buf-screen-sharing']"

Comment 4

[BugBot [:suhaib / :marco/ :calixte]]

Closing because no crashes reported for 12 weeks.