Version-Release number of selected component:
webkitgtk4-2.12.3-1.fc24

Additional info:
reporter:       libreport-2.7.1
backtrace_rating: 4
cmdline:        /usr/libexec/webkit2gtk-4.0/WebKitPluginProcess 15 /usr/lib64/mozilla/plugins/libgnome-shell-browser-plugin.so
crash_function: WebKit::NetscapePlugin::fromNPP
executable:     /usr/libexec/webkit2gtk-4.0/WebKitPluginProcess
global_pid:     12895
kernel:         4.5.7-300.fc24.x86_64
pkg_fingerprint: 73BD E983 81B4 6521
pkg_vendor:     Fedora Project
reproducible:   Not sure how to reproduce the problem
runlevel:       N 5
type:           CCpp
uid:            1000

Truncated backtrace:
Thread no. 1 (10 frames)
 #0 WebKit::NetscapePlugin::fromNPP at /usr/src/debug/webkitgtk-2.12.3/Source/WebKit2/WebProcess/Plugins/Netscape/NetscapePlugin.cpp:118
 #1 WebKit::NPN_InvokeDefault at /usr/src/debug/webkitgtk-2.12.3/Source/WebKit2/WebProcess/Plugins/Netscape/NetscapeBrowserFuncs.cpp:698
 #2 on_shell_appeared at browser-plugin.c:200
 #3 do_call at gdbusnamewatching.c:216
 #4 call_appeared_handler at gdbusnamewatching.c:228
 #5 on_name_owner_changed at gdbusnamewatching.c:315
 #6 emit_signal_instance_in_idle_cb at gdbusconnection.c:3701
 #11 WTF::RunLoop::run at /usr/src/debug/webkitgtk-2.12.3/Source/WTF/wtf/glib/RunLoopGLib.cpp:94
 #12 WebKit::ChildProcessMain<WebKit::PluginProcess, WebKit::PluginProcessMain> at /usr/src/debug/webkitgtk-2.12.3/Source/WebKit2/Shared/unix/ChildProcessMain.h:61
 #14 _start

Potential duplicate: bug 1290893