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[Solved]PaintController Endless Loop

  • I'm trying to debug my extension that crashes Opera during a long-running process. So I start Opera with verbose logging enabled (opera --enable-logging --v=1 &).

    The crash doesn't happen because Opera is stuck in an endless loop displaying this "error" hundreds of times per second:

    ERROR:paint_controller.cc(548)] PaintController::FinishCycle() completed
    

    I searched in about:flags, but did not find a way to disable the PaintController.

  • Try disabling opera's hardware acceleration and see if it helps.

  • Thanks. Although that didn't get rid of the PaintController errors, it stopped the looping, which made the log manageable.

    The log is quite cryptic, but it looks like the crash happens here:

    [29112:29168:0317/003725.993994:VERBOSE1:url_filter.cc(359)] Invalid rule: /www\.tichyseinblick\.de\/.+\w+\/\w+\.(gif|jpg|png)/
    [29112:29168:0317/003725.994028:VERBOSE1:url_filter.cc(359)] Invalid rule: /www\.nw\.de\/.+\w+\/\w+\.(gif|jpg|png)/
    [29112:29168:0317/003725.994088:VERBOSE1:url_filter.cc(359)] Invalid rule: /www\.fanfiktion\.de\/.+\w+\/\w+\.(gif|jpg|png)/
    [29112:29168:0317/003725.994128:VERBOSE1:url_filter.cc(359)] Invalid rule: /www\.frag-mutti\.de\/.+\w+\/\w+\.(gif|jpg|png)/
    [29112:29168:0317/003725.994154:VERBOSE1:url_filter.cc(359)] Invalid rule: /www\.weser-kurier\.de\/.+\w+\/\w+\.(gif|jpg|png)/
    [29112:29168:0317/003725.994185:VERBOSE1:url_filter.cc(359)] Invalid rule: /www\.donnerwetter\.de\/.+\w+\/\w+\.(gif|jpg|png)/
    [29112:29130:0317/003726.037608:VERBOSE1:content_verifier.cc(595)] OnFetchComplete hhhfihlmbcifeafjbbjfkclpofddkalf success:1
    [29112:29130:0317/003726.039130:VERBOSE1:content_verifier.cc(595)] OnFetchComplete kgogikjfdpdkoedplfagjjcfodbokblg success:1
    [29112:29130:0317/003726.043473:VERBOSE1:content_verifier.cc(595)] OnFetchComplete kipjbhgniklcnglfaldilecjomjaddfi success:1
    [29112:29130:0317/003726.060958:VERBOSE1:content_verifier.cc(595)] OnFetchComplete mjfdcfnlgkhmadiafkpopgifghhgoaif success:1
    [29112:29130:0317/003726.072405:VERBOSE1:content_verifier.cc(595)] OnFetchComplete mmmbddcnnndpbdflpccgcknaaabgldak success:1
    [29112:29112:0317/003726.128330:VERBOSE1:top_active_pages.cc(50)] Received history query results.
    [29112:29112:0317/003726.128412:VERBOSE1:partner_offer_history_fetcher_composite.cc(55)] Fetched transaction 0, remaining tasks: 1
    [29329:1:0317/003726.186601:ERROR:child_thread_impl.cc(858)] Receiver for unknown Channel-associated interface: chrome.mojom.SearchBouncer
    [29335:1:0317/003726.208600:ERROR:child_thread_impl.cc(858)] Receiver for unknown Channel-associated interface: chrome.mojom.SearchBouncer
    [29112:29112:0317/003726.218161:WARNING:x11_util.cc(1415)] X error received: serial 686, error_code 10 (BadAccess (attempt to access private resource 
    denied)), request_code 33, minor_code 0 (X_GrabKey)
    [29112:29112:0317/003726.218752:WARNING:x11_util.cc(1415)] X error received: serial 687, error_code 10 (BadAccess (attempt to access private resource 
    denied)), request_code 33, minor_code 0 (X_GrabKey)
    [29112:29112:0317/003726.218978:WARNING:x11_util.cc(1415)] X error received: serial 688, error_code 10 (BadAccess (attempt to access private resource 
    denied)), request_code 33, minor_code 0 (X_GrabKey)
    [29112:29112:0317/003726.219024:WARNING:x11_util.cc(1415)] X error received: serial 690, error_code 10 (BadAccess (attempt to access private resource 
    denied)), request_code 33, minor_code 0 (X_GrabKey)
    [29368:1:0317/003726.232408:ERROR:child_thread_impl.cc(858)] Receiver for unknown Channel-associated interface: chrome.mojom.SearchBouncer
    [29372:1:0317/003726.307223:ERROR:child_thread_impl.cc(858)] Receiver for unknown Channel-associated interface: chrome.mojom.SearchBouncer
    [29377:1:0317/003726.336040:ERROR:child_thread_impl.cc(858)] Receiver for unknown Channel-associated interface: chrome.mojom.SearchBouncer
    [29112:29112:0317/003726.341142:VERBOSE1:session_recorder_impl.cc(518)] [initial_context] 861b
    [29399:1:0317/003726.357376:ERROR:child_thread_impl.cc(858)] Receiver for unknown Channel-associated interface: chrome.mojom.SearchBouncer
    [29755:1:0317/003726.364178:VERBOSE1:sandbox_linux.cc(69)] Activated seccomp-bpf sandbox for process type: renderer.
    [29112:29112:0317/003726.394620:VERBOSE1:top_active_pages.cc(50)] Received history query results.
    [29149:29156:0317/003726.396094:VERBOSE1:network_delegate.cc(32)] NetworkDelegate::NotifyBeforeURLRequest: https://duckduckgo.com/?q=firefox+%22browse
    r.tabs.get%22&t=opera&ia=web
    [29456:1:0317/003726.418500:ERROR:child_thread_impl.cc(858)] Receiver for unknown Channel-associated interface: chrome.mojom.SearchBouncer
    [29763:1:0317/003726.453416:VERBOSE1:sandbox_linux.cc(69)] Activated seccomp-bpf sandbox for process type: renderer.
    [29399:1:0317/003726.463551:ERROR:paint_controller.cc(548)] PaintController::FinishCycle() completed
    [29458:1:0317/003726.465874:ERROR:child_thread_impl.cc(858)] Receiver for unknown Channel-associated interface: chrome.mojom.SearchBouncer
    [29766:1:0317/003726.470674:VERBOSE1:sandbox_linux.cc(69)] Activated seccomp-bpf sandbox for process type: renderer.
    [29329:1:0317/003726.514292:ERROR:paint_controller.cc(548)] PaintController::FinishCycle() completed
    
  • My original question has been answered, so I will close this issue and open a new one for my crash problem.

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