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Description of problem: Was just viewing YouTube videos. Here it uses Flash (hence plugin-container crashed along with main seamonkey process), but I have the same issue on fully HTML5-enabled SeaMonkey. Version-Release number of selected component: seamonkey-2.40-1.fc23 Additional info: reporter: libreport-2.6.4 backtrace_rating: 4 cmdline: /usr/lib64/seamonkey/plugin-container /usr/lib64/flash-plugin/libflashplayer.so -greomni /usr/lib64/seamonkey/omni.ja -appdir /usr/lib64/seamonkey 15730 plugin crash_function: mozalloc_abort executable: /usr/lib64/seamonkey/plugin-container global_pid: 15858 kernel: 4.4.6-300.fc23.x86_64 runlevel: N 5 type: CCpp uid: 1000 Truncated backtrace: Thread no. 1 (10 frames) #0 mozalloc_abort at /usr/src/debug/seamonkey-2.40/seamonkey-2.40/mozilla/memory/mozalloc/mozalloc_abort.cpp:33 #1 Abort at /usr/src/debug/seamonkey-2.40/seamonkey-2.40/mozilla/xpcom/base/nsDebugImpl.cpp:472 #2 NS_DebugBreak at /usr/src/debug/seamonkey-2.40/seamonkey-2.40/mozilla/xpcom/base/nsDebugImpl.cpp:459 #3 mozilla::ipc::MessageChannel::OnChannelErrorFromLink at /usr/src/debug/seamonkey-2.40/seamonkey-2.40/mozilla/ipc/glue/MessageChannel.cpp:1768 #4 mozilla::ipc::ProcessLink::OnChannelError at /usr/src/debug/seamonkey-2.40/seamonkey-2.40/mozilla/ipc/glue/MessageLink.cpp:429 #5 event_process_active_single_queue at /usr/src/debug/seamonkey-2.40/seamonkey-2.40/mozilla/ipc/chromium/src/third_party/libevent/event.c:1350 #6 event_process_active at /usr/src/debug/seamonkey-2.40/seamonkey-2.40/mozilla/ipc/chromium/src/third_party/libevent/event.c:1420 #7 event_base_loop at /usr/src/debug/seamonkey-2.40/seamonkey-2.40/mozilla/ipc/chromium/src/third_party/libevent/event.c:1621 #8 base::MessagePumpLibevent::Run at /usr/src/debug/seamonkey-2.40/seamonkey-2.40/mozilla/ipc/chromium/src/base/message_pump_libevent.cc:357 #9 MessageLoop::RunHandler at /usr/src/debug/seamonkey-2.40/seamonkey-2.40/mozilla/ipc/chromium/src/base/message_loop.cc:227 Potential duplicate: bug 1226565
Created attachment 1142964 [details] File: backtrace
Created attachment 1142965 [details] File: cgroup
Created attachment 1142966 [details] File: core_backtrace
Created attachment 1142967 [details] File: dso_list
Created attachment 1142968 [details] File: environ
Created attachment 1142969 [details] File: exploitable
Created attachment 1142970 [details] File: limits
Created attachment 1142971 [details] File: maps
Created attachment 1142972 [details] File: mountinfo
Created attachment 1142973 [details] File: namespaces
Created attachment 1142974 [details] File: open_fds
Created attachment 1142975 [details] File: proc_pid_status
Created attachment 1142976 [details] File: var_log_messages
This is just fallout from Bug 1323477, seems Flash wasn't related, just plugin-container dying because SeaMonkey crashed while trying HTML5 first.
> executable: /usr/lib64/seamonkey/plugin-container The crash is in "plugin-container" process, but: > the same issue on fully HTML5-enabled SeaMonkey. which should not use plugins at all. Probably it is another issue. If yes, reopen the bug. *** This bug has been marked as a duplicate of bug 1310418 ***