[Webkit-unassigned] [Bug 222451] New: REGRESSION(r273309) [GStreamer] webrtc/captureCanvas-webrtc-software-h264-baseline.html is flaky crashing inside libwebrtc

bugzilla-daemon at webkit.org bugzilla-daemon at webkit.org
Thu Feb 25 19:01:55 PST 2021 

https://bugs.webkit.org/show_bug.cgi?id=222451

            Bug ID: 222451
           Summary: REGRESSION(r273309) [GStreamer]
                    webrtc/captureCanvas-webrtc-software-h264-baseline.htm
                    l is flaky crashing inside libwebrtc
           Product: WebKit
           Version: WebKit Nightly Build
          Hardware: Unspecified
                OS: Unspecified
            Status: NEW
          Severity: Normal
          Priority: P2
         Component: WebRTC
          Assignee: webkit-unassigned at lists.webkit.org
          Reporter: lmoura at igalia.com
                CC: youennf at gmail.com

Created attachment 421595

  --> https://bugs.webkit.org/attachment.cgi?id=421595&action=review

Debug bot crash log

webrtc/captureCanvas-webrtc-software-h264-baseline.html

Some times the bots do not generate a correct trace, but I managed to reproduce the one attached locally. The failure is already tracked in bug216538.

Debug thread 1 trace:

Thread 1 (Thread 0x7f6f59efa700 (LWP 40993)):
#0  __GI_raise (sig=sig at entry=6) at ../sysdeps/unix/sysv/linux/raise.c:50
#1  0x00007f7050f2b855 in __GI_abort () at abort.c:79
#2  0x00007f7050f862f7 in __libc_message (action=action at entry=do_abort, fmt=fmt at entry=0x7f7051097e35 "%s\n") at ../sysdeps/posix/libc_fatal.c:155
#3  0x00007f7050f8d81c in malloc_printerr (str=str at entry=0x7f705109a1f0 "double free or corruption (!prev)") at malloc.c:5347
#4  0x00007f7050f8ee6c in _int_free (av=0x7f6e8c000020, p=0x7f6e8c098e80, have_lock=<optimized out>) at malloc.c:4317
#5  0x00007f706c49fe09 in webrtc::AlignedFree(void*) (mem_block=0x7f6e8c098ec0) at ../../Source/ThirdParty/libwebrtc/Source/webrtc/rtc_base/memory/aligned_malloc.cc:95
#6  0x00007f706c262e9e in webrtc::AlignedFreeDeleter::operator()(void*) const (this=0x7f6e8c0073e0, ptr=0x7f6e8c098ec0) at ../../Source/ThirdParty/libwebrtc/Source/webrtc/rtc_base/memory/aligned_malloc.h:52
#7  0x00007f706c262fe0 in std::unique_ptr<unsigned char, webrtc::AlignedFreeDeleter>::~unique_ptr() (this=0x7f6e8c0073e0, __in_chrg=<optimized out>) at /usr/include/c++/10.2.0/bits/unique_ptr.h:361
#8  0x00007f706c25f918 in webrtc::I420Buffer::~I420Buffer() (this=0x7f6e8c0073c0, __in_chrg=<optimized out>) at ../../Source/ThirdParty/libwebrtc/Source/webrtc/api/video/i420_buffer.cc:59
#9  0x00007f706c263438 in rtc::RefCountedObject<webrtc::I420Buffer>::~RefCountedObject() (this=0x7f6e8c0073c0, __in_chrg=<optimized out>) at ../../Source/ThirdParty/libwebrtc/Source/webrtc/rtc_base/ref_counted_object.h:55
#10 0x00007f706c263454 in rtc::RefCountedObject<webrtc::I420Buffer>::~RefCountedObject() (this=0x7f6e8c0073c0, __in_chrg=<optimized out>) at ../../Source/ThirdParty/libwebrtc/Source/webrtc/rtc_base/ref_counted_object.h:55
#11 0x00007f706c26340d in rtc::RefCountedObject<webrtc::I420Buffer>::Release() const (this=0x7f6e8c0073c0) at ../../Source/ThirdParty/libwebrtc/Source/webrtc/rtc_base/ref_counted_object.h:41
#12 0x00007f706b1a2351 in rtc::scoped_refptr<webrtc::VideoFrameBuffer>::~scoped_refptr() (this=0x7f6e8c059860, __in_chrg=<optimized out>) at ../../Source/ThirdParty/libwebrtc/Source/webrtc/api/scoped_refptr.h:102
#13 0x00007f706c294056 in __gnu_cxx::new_allocator<std::_List_node<rtc::scoped_refptr<webrtc::VideoFrameBuffer> > >::destroy<rtc::scoped_refptr<webrtc::VideoFrameBuffer> >(rtc::scoped_refptr<webrtc::VideoFrameBuffer>*) (this=0x55dc66d33090, __p=0x7f6e8c059860) at /usr/include/c++/10.2.0/ext/new_allocator.h:156
#14 0x00007f706c293ebf in std::allocator_traits<std::allocator<std::_List_node<rtc::scoped_refptr<webrtc::VideoFrameBuffer> > > >::destroy<rtc::scoped_refptr<webrtc::VideoFrameBuffer> >(std::allocator<std::_List_node<rtc::scoped_refptr<webrtc::VideoFrameBuffer> > >&, rtc::scoped_refptr<webrtc::VideoFrameBuffer>*) (__a=..., __p=0x7f6e8c059860) at /usr/include/c++/10.2.0/bits/alloc_traits.h:531
#15 0x00007f706c293c94 in std::__cxx11::_List_base<rtc::scoped_refptr<webrtc::VideoFrameBuffer>, std::allocator<rtc::scoped_refptr<webrtc::VideoFrameBuffer> > >::_M_clear() (this=0x55dc66d33090) at /usr/include/c++/10.2.0/bits/list.tcc:77
#16 0x00007f706c29380c in std::__cxx11::_List_base<rtc::scoped_refptr<webrtc::VideoFrameBuffer>, std::allocator<rtc::scoped_refptr<webrtc::VideoFrameBuffer> > >::~_List_base() (this=0x55dc66d33090, __in_chrg=<optimized out>) at /usr/include/c++/10.2.0/bits/stl_list.h:499
#17 0x00007f706c29378e in std::__cxx11::list<rtc::scoped_refptr<webrtc::VideoFrameBuffer>, std::allocator<rtc::scoped_refptr<webrtc::VideoFrameBuffer> > >::~list() (this=0x55dc66d33090, __in_chrg=<optimized out>) at /usr/include/c++/10.2.0/bits/stl_list.h:827
#18 0x00007f706c292dd6 in webrtc::VideoFrameBufferPool::~VideoFrameBufferPool() (this=0x55dc66d33080, __in_chrg=<optimized out>) at ../../Source/ThirdParty/libwebrtc/Source/webrtc/common_video/video_frame_buffer_pool.cc:52
#19 0x00007f706bdf98d4 in WebCore::GStreamerVideoFrameLibWebRTC::~GStreamerVideoFrameLibWebRTC() (this=0x55dc66d32fd0, __in_chrg=<optimized out>) at ../../Source/WebCore/platform/mediastream/gstreamer/GStreamerVideoFrameLibWebRTC.h:37
#20 0x00007f706bdf990c in WebCore::GStreamerVideoFrameLibWebRTC::~GStreamerVideoFrameLibWebRTC() (this=0x55dc66d32fd0, __in_chrg=<optimized out>) at ../../Source/WebCore/platform/mediastream/gstreamer/GStreamerVideoFrameLibWebRTC.h:37
#21 0x00007f706bdf9983 in rtc::RefCountedObject<webrtc::VideoFrameBuffer>::Release() const (this=0x55dc66d32fd0) at ../../Source/ThirdParty/libwebrtc/Source/webrtc/rtc_base/ref_counted_object.h:41
#22 0x00007f706b1a2351 in rtc::scoped_refptr<webrtc::VideoFrameBuffer>::~scoped_refptr() (this=0x55dc5f041308, __in_chrg=<optimized out>) at ../../Source/ThirdParty/libwebrtc/Source/webrtc/api/scoped_refptr.h:102
#23 0x00007f706c266132 in webrtc::VideoFrame::~VideoFrame() (this=0x55dc5f041300, __in_chrg=<optimized out>) at ../../Source/ThirdParty/libwebrtc/Source/webrtc/api/video/video_frame.cc:282
#24 0x00007f706cc15352 in ~<lambda>(void) (this=0x55dc5f0412f8, __in_chrg=<optimized out>) at ../../Source/ThirdParty/libwebrtc/Source/webrtc/video/video_stream_encoder.cc:976
#25 0x00007f706cc28bfc in webrtc::webrtc_new_closure_impl::ClosureTask<webrtc::VideoStreamEncoder::OnFrame(const webrtc::VideoFrame&)::<lambda()> >::~ClosureTask(void) (this=0x55dc5f0412f0, __in_chrg=<optimized out>) at ../../Source/ThirdParty/libwebrtc/Source/webrtc/rtc_base/task_utils/to_queued_task.h:25
#26 0x00007f706cc28c24 in webrtc::webrtc_new_closure_impl::ClosureTask<webrtc::VideoStreamEncoder::OnFrame(const webrtc::VideoFrame&)::<lambda()> >::~ClosureTask(void) (this=0x55dc5f0412f0, __in_chrg=<optimized out>) at ../../Source/ThirdParty/libwebrtc/Source/webrtc/rtc_base/task_utils/to_queued_task.h:25
#27 0x00007f706c4a7ffc in webrtc::(anonymous namespace)::TaskQueueStdlib::ProcessTasks() (this=0x7f6f0c10edc0) at ../../Source/ThirdParty/libwebrtc/Source/webrtc/rtc_base/task_queue_stdlib.cc:242
#28 0x00007f706c4a7f2c in webrtc::(anonymous namespace)::TaskQueueStdlib::ThreadMain(void*) (context=0x7f6f0c10edc0) at ../../Source/ThirdParty/libwebrtc/Source/webrtc/rtc_base/task_queue_stdlib.cc:226
#29 0x00007f70686ef5cf in rtc::PlatformThread::Run() (this=0x7f6f0c10eee8) at ../../Source/ThirdParty/libwebrtc/Source/webrtc/rtc_base/platform_thread.cc:130
#30 0x00007f70686eed34 in rtc::PlatformThread::StartThread(void*) (param=0x7f6f0c10eee8) at ../../Source/ThirdParty/libwebrtc/Source/webrtc/rtc_base/platform_thread.cc:67
#31 0x00007f70515174d2 in start_thread (arg=<optimized out>) at pthread_create.c:477
#32 0x00007f7051007323 in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

STDERR:

STDERR: (used_ids.h:55): Duplicate id found. Reassigning from 103 to 127
STDERR: (used_ids.h:55): Duplicate id found. Reassigning from 105 to 125
STDERR: (webrtc_video_engine.cc:3316): Absent receive stream; ignoring clearing encoded frame sink for ssrc 0
STDERR: (webrtc_video_engine.cc:2130): RTX SSRCs configured but there's no configured RTX payload type. Ignoring.
STDERR: (balanced_degradation_settings.cc:96): Unsupported size, value ignored.
STDERR: (balanced_degradation_settings.cc:96): Unsupported size, value ignored.
STDERR: (balanced_degradation_settings.cc:96): Unsupported size, value ignored.
STDERR: (video_send_stream_impl.cc:260): ERROR: Initial encoder max bitrate = -1 which is <= 0!
STDERR: (video_stream_encoder.cc:1461): Failed to encode frame. Error code: -1
STDERR: (generic_decoder.cc:94): Too many frames backed up in the decoder, dropping this one.
STDERR: (generic_decoder.cc:94): Too many frames backed up in the decoder, dropping this one.
STDERR: (generic_decoder.cc:94): Too many frames backed up in the decoder, dropping this one.
STDERR: (video_receive_stream2.cc:757): No decodable frame in 3000 ms, requesting keyframe.
STDERR: (rtcp_receiver.cc:315): std::optional<webrtc::TimeDelta> webrtc::RTCPReceiver::OnPeriodicRttUpdate(webrtc::Timestamp, bool): Timeout: No increase in RTCP RR extended highest sequence number.
STDERR: (video_stream_encoder.cc:1461): Failed to encode frame. Error code: -1
STDERR: double free or corruption (!prev)
STDERR: LEAK: 1 WebPageProxy

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