Version-Release number of selected component: firefox-62.0-2.fc28 Additional info: reporter: libreport-2.9.5 backtrace_rating: 4 cmdline: /usr/lib64/firefox/firefox -contentproc -childID 136 -isForBrowser -prefsLen 15682 -schedulerPrefs 0001,2 -parentBuildID 20180904093908 -greomni /usr/lib64/firefox/omni.ja -appomni /usr/lib64/firefox/browser/omni.ja -appdir /usr/lib64/firefox/browser 4917 true tab crash_function: MOZ_CrashPrintf executable: /usr/lib64/firefox/firefox journald_cursor: s=d7b8957c8cb94d40adb6987cbdb79311;i=8b97b;b=ec72f3c12aad41d98fa8a7efa2d2d160;m=b27923e35;t=57561d1f9aba5;x=b7d0f7f9b89930ba kernel: 4.17.19-200.fc28.x86_64 mountinfo: rootdir: /proc/21000/fdinfo runlevel: N 5 type: CCpp uid: 1000 Truncated backtrace: Thread no. 1 (10 frames) #0 MOZ_CrashPrintf at /usr/src/debug/firefox-62.0-2.fc28.x86_64/mfbt/Assertions.cpp:63 #1 mozilla::ipc::BackgroundChildImpl::ProcessingError(mozilla::ipc::HasResultCodes::Result, char const*) at /usr/src/debug/firefox-62.0-2.fc28.x86_64/ipc/glue/BackgroundChildImpl.cpp:159 #2 mozilla::ipc::MessageChannel::ReportConnectionError(char const*, IPC::Message*) const at /usr/src/debug/firefox-62.0-2.fc28.x86_64/ipc/glue/MessageChannel.cpp:2460 #3 mozilla::ipc::MessageChannel::Send(IPC::Message*) at /usr/src/debug/firefox-62.0-2.fc28.x86_64/ipc/glue/MessageChannel.cpp:927 #4 mozilla::camera::PCamerasChild::SendAllDone() at /usr/src/debug/firefox-62.0-2.fc28.x86_64/objdir/dist/include/mozilla/ipc/ProtocolUtils.h:285 #5 mozilla::detail::RunnableMethodArguments<>::applyImpl<mozilla::camera::CamerasChild, bool (mozilla::camera::PCamerasChild::*)()>(mozilla::camera::CamerasChild*, bool (mozilla::camera::PCamerasChild::*)(), mozilla::Tuple<>&, std::integer_sequence<unsigned long>) at /usr/src/debug/firefox-62.0-2.fc28.x86_64/objdir/dist/include/nsThreadUtils.h:1211 #6 mozilla::detail::RunnableMethodArguments<>::apply<mozilla::camera::CamerasChild, bool (mozilla::camera::PCamerasChild::*)()> at /usr/src/debug/firefox-62.0-2.fc28.x86_64/objdir/dist/include/nsThreadUtils.h:1171 #7 mozilla::detail::RunnableMethodImpl<mozilla::camera::CamerasChild*, bool (mozilla::camera::PCamerasChild::*)(), true, (mozilla::RunnableKind)0>::Run at /usr/src/debug/firefox-62.0-2.fc28.x86_64/objdir/dist/include/nsThreadUtils.h:1216 #8 nsThread::ProcessNextEvent(bool, bool*) at /usr/src/debug/firefox-62.0-2.fc28.x86_64/xpcom/threads/nsThread.cpp:1051 #9 NS_ProcessNextEvent at /usr/src/debug/firefox-62.0-2.fc28.x86_64/xpcom/threads/nsThreadUtils.cpp:519
Created attachment 1481814 [details] File: backtrace
Created attachment 1481815 [details] File: cgroup
Created attachment 1481816 [details] File: core_backtrace
Created attachment 1481817 [details] File: cpuinfo
Created attachment 1481818 [details] File: dso_list
Created attachment 1481819 [details] File: environ
Created attachment 1481820 [details] File: limits
Created attachment 1481821 [details] File: maps
Created attachment 1481822 [details] File: open_fds
Created attachment 1481823 [details] File: proc_pid_status
Created attachment 1481824 [details] File: exploitable
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I'm seeing similar mozilla::camera::PCamerasChild::SendAllDone() crashes on Fedora 30, and it looks like multiple people are seeing them: https://retrace.fedoraproject.org/faf/reports/2630327/ I have managed to capture a backtrace: #0 0x00007fbc4395c4d7 in MOZ_Crash (aReason=0x55965d449320 <sPrintfCrashReason> "MsgDropped: Channel error: cannot send/recv", aLine=155, aFilename=<synthetic pointer>) at /usr/src/debug/firefox-68.0-4.fc30.x86_64/objdir/dist/include/mozilla/Assertions.h:313 #1 0x00007fbc4395c4d7 in mozilla::ipc::BackgroundChildImpl::ProcessingError(mozilla::ipc::HasResultCodes::Result, char const*) (this=<optimized out>, aCode=<optimized out>, aReason=0x7fbc456fe200 "Channel error: cannot send/recv") at /usr/src/debug/firefox-68.0-4.fc30.x86_64/ipc/glue/BackgroundChildImpl.cpp:155 #2 0x00007fbc439671ad in mozilla::ipc::MessageChannel::ReportConnectionError(char const*, IPC::Message*) const (this=0x7fbc2e2320d8, aChannelName=<optimized out>, aMsg=0x7fbc04023eb0) at /usr/src/debug/firefox-68.0-4.fc30.x86_64/ipc/glue/MessageChannel.cpp:2450 #3 0x00007fbc41b68982 in mozilla::ipc::MessageChannel::Send(IPC::Message*) (this=0x7fbc2e2320d8, aMsg=0x7fbc04023eb0) at /usr/src/debug/firefox-68.0-4.fc30.x86_64/ipc/glue/MessageChannel.cpp:992 #4 0x00007fbc438269e7 in mozilla::camera::PCamerasChild::SendAllDone() (this=0x7fbc30b97a40) at /usr/src/debug/firefox-68.0-4.fc30.x86_64/objdir/dist/include/mozilla/UniquePtr.h:308 Unfortunately ABRT deleted the core dump before I could copy it because of another (unrelated crash) and lack of disk space. I'm running firefox-68.0-4.fc30.x86_64. On all times this crash happened, I was alway from my desk so I don't know what triggered it.
Hello, abrt reported bugs come from various sources/scenarios and usually can't be reproduced. This is automated bug processing which is applied to all abrt reported bugs which are supposed to be non-reproducible. If you can reproduce the bug (you have a testcase), please reopen it and assign it directly to me - stransky. Thanks.