Attachment 341478 Details for Bug 186044 – Second attempt at a backtrace.

Second attempt at a backtrace.

backtrace2.txt (text/plain), 45.99 KB, created by Ryan Farmer on 2018-05-28 23:32:41 PDT

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Creator: Ryan Farmer

Created: 2018-05-28 23:32:41 PDT

Size: 45.99 KB

patch

obsolete

>$ coredumpctl gdb
>           PID: 6696 (WebKitWebProces)
>           UID: 1000 (ryanfarmer)
>           GID: 1000 (ryanfarmer)
>        Signal: 6 (ABRT)
>     Timestamp: Tue 2018-05-29 01:06:09 CDT (18min ago)
>  Command Line: /usr/libexec/webkit2gtk-4.0/WebKitWebProcess 6 55
>    Executable: /usr/libexec/webkit2gtk-4.0/WebKitWebProcess
> Control Group: /user.slice/user-1000.slice/session-2.scope
>          Unit: session-2.scope
>         Slice: user-1000.slice
>       Session: 2
>     Owner UID: 1000 (ryanfarmer)
>       Boot ID: 2dcd7145ddd14ea1840a603cbb1ff6cf
>    Machine ID: c6637e2e1f224a4ebc1935538141920c
>      Hostname: localhost.localdomain
>       Storage: /var/lib/systemd/coredump/core.WebKitWebProces.1000.2dcd7145ddd14ea1840a603cbb1ff6cf.6696.1527573969000000.lz4
>       Message: Process 6696 (WebKitWebProces) of user 1000 dumped core.
>                
>                Stack trace of thread 6696:
>                #0  0x00007f75255c3f2b raise (libc.so.6)
>                #1  0x00007f75255ae561 abort (libc.so.6)
>                #2  0x00007f75298ba0f3 n/a (libglib-2.0.so.0)
>                #3  0x00007f752991315e g_assertion_message_expr (libglib-2.0.so.0)
>                #4  0x00007f74b956e599 ephy_password_manager_save (libephysync.so)
>                #5  0x00007f74b99d2952 n/a (libephywebextension.so)
>                #6  0x00007f74b99d2db8 n/a (libephywebextension.so)
>                #7  0x00007f752a0d0b50 n/a (libgio-2.0.so.0)
>                #8  0x00007f75298e81cb n/a (libglib-2.0.so.0)
>                #9  0x00007f75298eb8ad g_main_context_dispatch (libglib-2.0.so.0)
>                #10 0x00007f75298ebc78 n/a (libglib-2.0.so.0)
>                #11 0x00007f75298ebfa2 g_main_loop_run (libglib-2.0.so.0)
>                #12 0x00007f7530f38610 _ZN3WTF7RunLoop3runEv (libjavascriptcoregtk-4.0.so.18)
>                #13 0x00007f7532b9b358 _ZN6WebKit16ChildProcessMainINS_10WebProcessENS_14WebProcessMainEEEiiPPc (libwebkit2gtk-4.0.so.37)
>                #14 0x00007f75255b018b __libc_start_main (libc.so.6)
>                #15 0x0000556e79d40dfa _start (WebKitWebProcess)
>                
>                Stack trace of thread 6704:
>                #0  0x00007f752dd5f87a pthread_cond_timedwait@@GLIBC_2.3.2 (libpthread.so.0)
>                #1  0x00007f7530f44b64 _ZN7bmalloc9Scavenger13threadRunLoopEv (libjavascriptcoregtk-4.0.so.18)
>                #2  0x00007f7525fb7513 n/a (libstdc++.so.6)
>                #3  0x00007f752dd59594 start_thread (libpthread.so.0)
>                #4  0x00007f752568700f __clone (libc.so.6)
>                
>                Stack trace of thread 6705:
>                #0  0x00007f752567c589 __poll (libc.so.6)
>                #1  0x00007f75298ebbe6 n/a (libglib-2.0.so.0)
>                #2  0x00007f75298ebd10 g_main_context_iteration (libglib-2.0.so.0)
>                #3  0x00007f7510b07e4d dconf_gdbus_worker_thread (libdconfsettings.so)
>                #4  0x00007f7529913f2a n/a (libglib-2.0.so.0)
>                #5  0x00007f752dd59594 start_thread (libpthread.so.0)
>                #6  0x00007f752568700f __clone (libc.so.6)
>                
>                Stack trace of thread 6706:
>                #0  0x00007f752567c589 __poll (libc.so.6)
>                #1  0x00007f75298ebbe6 n/a (libglib-2.0.so.0)
>                #2  0x00007f75298ebd10 g_main_context_iteration (libglib-2.0.so.0)
>                #3  0x00007f75298ebd61 n/a (libglib-2.0.so.0)
>                #4  0x00007f7529913f2a n/a (libglib-2.0.so.0)
>                #5  0x00007f752dd59594 start_thread (libpthread.so.0)
>                #6  0x00007f752568700f __clone (libc.so.6)
>                
>                Stack trace of thread 6761:
>                #0  0x00007f752dd5f87a pthread_cond_timedwait@@GLIBC_2.3.2 (libpthread.so.0)
>                #1  0x00007f7530f3725e _ZN3WTF15ThreadCondition9timedWaitERNS_5MutexENS_8WallTimeE (libjavascriptcoregtk-4.0.so.18)
>                #2  0x00007f7530f0ba63 _ZN3WTF10ParkingLot21parkConditionallyImplEPKvRKNS_12ScopedLambdaIFbvEEERKNS3_IFvvEEERKNS_24TimeWithDynamicClockTypeE (libjavascriptcoregtk-4.0.so.18)
>                #3  0x00007f7530ef4c9b n/a (libjavascriptcoregtk-4.0.so.18)
>                #4  0x00007f7530f0f73f _ZN3WTF6Thread10entryPointEPNS0_16NewThreadContextE (libjavascriptcoregtk-4.0.so.18)
>                #5  0x00007f7530f366ed n/a (libjavascriptcoregtk-4.0.so.18)
>                #6  0x00007f752dd59594 start_thread (libpthread.so.0)
>                #7  0x00007f752568700f __clone (libc.so.6)
>                
>                Stack trace of thread 6715:
>                #0  0x00007f752567c589 __poll (libc.so.6)
>                #1  0x00007f75298ebbe6 n/a (libglib-2.0.so.0)
>                #2  0x00007f75298ebfa2 g_main_loop_run (libglib-2.0.so.0)
>                #3  0x00007f7530f38610 _ZN3WTF7RunLoop3runEv (libjavascriptcoregtk-4.0.so.18)
>                #4  0x00007f7530f0f73f _ZN3WTF6Thread10entryPointEPNS0_16NewThreadContextE (libjavascriptcoregtk-4.0.so.18)
>                #5  0x00007f7530f366ed n/a (libjavascriptcoregtk-4.0.so.18)
>                #6  0x00007f752dd59594 start_thread (libpthread.so.0)
>                #7  0x00007f752568700f __clone (libc.so.6)
>                
>                Stack trace of thread 6786:
>                #0  0x00007f752dd5f87a pthread_cond_timedwait@@GLIBC_2.3.2 (libpthread.so.0)
>                #1  0x00007f7530f3725e _ZN3WTF15ThreadCondition9timedWaitERNS_5MutexENS_8WallTimeE (libjavascriptcoregtk-4.0.so.18)
>                #2  0x00007f7530f0ba63 _ZN3WTF10ParkingLot21parkConditionallyImplEPKvRKNS_12ScopedLambdaIFbvEEERKNS3_IFvvEEERKNS_24TimeWithDynamicClockTypeE (libjavascriptcoregtk-4.0.so.18)
>                #3  0x00007f7530ef4c9b n/a (libjavascriptcoregtk-4.0.so.18)
>                #4  0x00007f7530f0f73f _ZN3WTF6Thread10entryPointEPNS0_16NewThreadContextE (libjavascriptcoregtk-4.0.so.18)
>                #5  0x00007f7530f366ed n/a (libjavascriptcoregtk-4.0.so.18)
>                #6  0x00007f752dd59594 start_thread (libpthread.so.0)
>                #7  0x00007f752568700f __clone (libc.so.6)
>                
>                Stack trace of thread 6794:
>                #0  0x00007f752dd5f87a pthread_cond_timedwait@@GLIBC_2.3.2 (libpthread.so.0)
>                #1  0x00007f7530f3725e _ZN3WTF15ThreadCondition9timedWaitERNS_5MutexENS_8WallTimeE (libjavascriptcoregtk-4.0.so.18)
>                #2  0x00007f7530f0ba63 _ZN3WTF10ParkingLot21parkConditionallyImplEPKvRKNS_12ScopedLambdaIFbvEEERKNS3_IFvvEEERKNS_24TimeWithDynamicClockTypeE (libjavascriptcoregtk-4.0.so.18)
>                #3  0x00007f7530ef4c9b n/a (libjavascriptcoregtk-4.0.so.18)
>                #4  0x00007f7530f0f73f _ZN3WTF6Thread10entryPointEPNS0_16NewThreadContextE (libjavascriptcoregtk-4.0.so.18)
>                #5  0x00007f7530f366ed n/a (libjavascriptcoregtk-4.0.so.18)
>                #6  0x00007f752dd59594 start_thread (libpthread.so.0)
>                #7  0x00007f752568700f __clone (libc.so.6)
>                
>                Stack trace of thread 6793:
>                #0  0x00007f752dd5f87a pthread_cond_timedwait@@GLIBC_2.3.2 (libpthread.so.0)
>                #1  0x00007f7530f3725e _ZN3WTF15ThreadCondition9timedWaitERNS_5MutexENS_8WallTimeE (libjavascriptcoregtk-4.0.so.18)
>                #2  0x00007f7530f0ba63 _ZN3WTF10ParkingLot21parkConditionallyImplEPKvRKNS_12ScopedLambdaIFbvEEERKNS3_IFvvEEERKNS_24TimeWithDynamicClockTypeE (libjavascriptcoregtk-4.0.so.18)
>                #3  0x00007f7530ef4c9b n/a (libjavascriptcoregtk-4.0.so.18)
>                #4  0x00007f7530f0f73f _ZN3WTF6Thread10entryPointEPNS0_16NewThreadContextE (libjavascriptcoregtk-4.0.so.18)
>                #5  0x00007f7530f366ed n/a (libjavascriptcoregtk-4.0.so.18)
>                #6  0x00007f752dd59594 start_thread (libpthread.so.0)
>                #7  0x00007f752568700f __clone (libc.so.6)
>                
>                Stack trace of thread 6795:
>                #0  0x00007f752dd5f87a pthread_cond_timedwait@@GLIBC_2.3.2 (libpthread.so.0)
>                #1  0x00007f7530f3725e _ZN3WTF15ThreadCondition9timedWaitERNS_5MutexENS_8WallTimeE (libjavascriptcoregtk-4.0.so.18)
>                #2  0x00007f7530f0ba63 _ZN3WTF10ParkingLot21parkConditionallyImplEPKvRKNS_12ScopedLambdaIFbvEEERKNS3_IFvvEEERKNS_24TimeWithDynamicClockTypeE (libjavascriptcoregtk-4.0.so.18)
>                #3  0x00007f7530ef4c9b n/a (libjavascriptcoregtk-4.0.so.18)
>                #4  0x00007f7530f0f73f _ZN3WTF6Thread10entryPointEPNS0_16NewThreadContextE (libjavascriptcoregtk-4.0.so.18)
>                #5  0x00007f7530f366ed n/a (libjavascriptcoregtk-4.0.so.18)
>                #6  0x00007f752dd59594 start_thread (libpthread.so.0)
>                #7  0x00007f752568700f __clone (libc.so.6)
>                
>                Stack trace of thread 6815:
>                #0  0x00007f752567c589 __poll (libc.so.6)
>                #1  0x00007f75298ebbe6 n/a (libglib-2.0.so.0)
>                #2  0x00007f75298ebfa2 g_main_loop_run (libglib-2.0.so.0)
>                #3  0x00007f7530f38610 _ZN3WTF7RunLoop3runEv (libjavascriptcoregtk-4.0.so.18)
>                #4  0x00007f7530f0f73f _ZN3WTF6Thread10entryPointEPNS0_16NewThreadContextE (libjavascriptcoregtk-4.0.so.18)
>                #5  0x00007f7530f366ed n/a (libjavascriptcoregtk-4.0.so.18)
>                #6  0x00007f752dd59594 start_thread (libpthread.so.0)
>                #7  0x00007f752568700f __clone (libc.so.6)
>                
>                Stack trace of thread 6884:
>                #0  0x00007f752567c589 __poll (libc.so.6)
>                #1  0x00007f75298ebbe6 n/a (libglib-2.0.so.0)
>                #2  0x00007f75298ebfa2 g_main_loop_run (libglib-2.0.so.0)
>                #3  0x00007f7530f38610 _ZN3WTF7RunLoop3runEv (libjavascriptcoregtk-4.0.so.18)
>                #4  0x00007f7530f0f73f _ZN3WTF6Thread10entryPointEPNS0_16NewThreadContextE (libjavascriptcoregtk-4.0.so.18)
>                #5  0x00007f7530f366ed n/a (libjavascriptcoregtk-4.0.so.18)
>                #6  0x00007f752dd59594 start_thread (libpthread.so.0)
>                #7  0x00007f752568700f __clone (libc.so.6)
>                
>                Stack trace of thread 6895:
>                #0  0x00007f752dd5f87a pthread_cond_timedwait@@GLIBC_2.3.2 (libpthread.so.0)
>                #1  0x00007f7530f3725e _ZN3WTF15ThreadCondition9timedWaitERNS_5MutexENS_8WallTimeE (libjavascriptcoregtk-4.0.so.18)
>                #2  0x00007f7530f0ba63 _ZN3WTF10ParkingLot21parkConditionallyImplEPKvRKNS_12ScopedLambdaIFbvEEERKNS3_IFvvEEERKNS_24TimeWithDynamicClockTypeE (libjavascriptcoregtk-4.0.so.18)
>                #3  0x00007f7530ef4c9b n/a (libjavascriptcoregtk-4.0.so.18)
>                #4  0x00007f7530f0f73f _ZN3WTF6Thread10entryPointEPNS0_16NewThreadContextE (libjavascriptcoregtk-4.0.so.18)
>                #5  0x00007f7530f366ed n/a (libjavascriptcoregtk-4.0.so.18)
>                #6  0x00007f752dd59594 start_thread (libpthread.so.0)
>                #7  0x00007f752568700f __clone (libc.so.6)
>                
>                Stack trace of thread 6837:
>                #0  0x00007f752567c589 __poll (libc.so.6)
>                #1  0x00007f75298ebbe6 n/a (libglib-2.0.so.0)
>                #2  0x00007f75298ebfa2 g_main_loop_run (libglib-2.0.so.0)
>                #3  0x00007f7530f38610 _ZN3WTF7RunLoop3runEv (libjavascriptcoregtk-4.0.so.18)
>                #4  0x00007f7530f0f73f _ZN3WTF6Thread10entryPointEPNS0_16NewThreadContextE (libjavascriptcoregtk-4.0.so.18)
>                #5  0x00007f7530f366ed n/a (libjavascriptcoregtk-4.0.so.18)
>                #6  0x00007f752dd59594 start_thread (libpthread.so.0)
>                #7  0x00007f752568700f __clone (libc.so.6)
>                
>                Stack trace of thread 6828:
>                #0  0x00007f752567c589 __poll (libc.so.6)
>                #1  0x00007f75298ebbe6 n/a (libglib-2.0.so.0)
>                #2  0x00007f75298ebfa2 g_main_loop_run (libglib-2.0.so.0)
>                #3  0x00007f7530f38610 _ZN3WTF7RunLoop3runEv (libjavascriptcoregtk-4.0.so.18)
>                #4  0x00007f7530f0f73f _ZN3WTF6Thread10entryPointEPNS0_16NewThreadContextE (libjavascriptcoregtk-4.0.so.18)
>                #5  0x00007f7530f366ed n/a (libjavascriptcoregtk-4.0.so.18)
>                #6  0x00007f752dd59594 start_thread (libpthread.so.0)
>                #7  0x00007f752568700f __clone (libc.so.6)
>                
>                Stack trace of thread 6785:
>                #0  0x00007f752dd5f87a pthread_cond_timedwait@@GLIBC_2.3.2 (libpthread.so.0)
>                #1  0x00007f7530f3725e _ZN3WTF15ThreadCondition9timedWaitERNS_5MutexENS_8WallTimeE (libjavascriptcoregtk-4.0.so.18)
>                #2  0x00007f7530f0ba63 _ZN3WTF10ParkingLot21parkConditionallyImplEPKvRKNS_12ScopedLambdaIFbvEEERKNS3_IFvvEEERKNS_24TimeWithDynamicClockTypeE (libjavascriptcoregtk-4.0.so.18)
>                #3  0x00007f7530ef4c9b n/a (libjavascriptcoregtk-4.0.so.18)
>                #4  0x00007f7530f0f73f _ZN3WTF6Thread10entryPointEPNS0_16NewThreadContextE (libjavascriptcoregtk-4.0.so.18)
>                #5  0x00007f7530f366ed n/a (libjavascriptcoregtk-4.0.so.18)
>                #6  0x00007f752dd59594 start_thread (libpthread.so.0)
>                #7  0x00007f752568700f __clone (libc.so.6)
>                
>                Stack trace of thread 6713:
>                #0  0x00007f752567c589 __poll (libc.so.6)
>                #1  0x00007f75298ebbe6 n/a (libglib-2.0.so.0)
>                #2  0x00007f75298ebfa2 g_main_loop_run (libglib-2.0.so.0)
>                #3  0x00007f7530f38610 _ZN3WTF7RunLoop3runEv (libjavascriptcoregtk-4.0.so.18)
>                #4  0x00007f7530f0f73f _ZN3WTF6Thread10entryPointEPNS0_16NewThreadContextE (libjavascriptcoregtk-4.0.so.18)
>                #5  0x00007f7530f366ed n/a (libjavascriptcoregtk-4.0.so.18)
>                #6  0x00007f752dd59594 start_thread (libpthread.so.0)
>                #7  0x00007f752568700f __clone (libc.so.6)
>                
>                Stack trace of thread 6707:
>                #0  0x00007f752567c589 __poll (libc.so.6)
>                #1  0x00007f75298ebbe6 n/a (libglib-2.0.so.0)
>                #2  0x00007f75298ebfa2 g_main_loop_run (libglib-2.0.so.0)
>                #3  0x00007f752a0e06ba n/a (libgio-2.0.so.0)
>                #4  0x00007f7529913f2a n/a (libglib-2.0.so.0)
>                #5  0x00007f752dd59594 start_thread (libpthread.so.0)
>                #6  0x00007f752568700f __clone (libc.so.6)
>                
>                Stack trace of thread 6714:
>                #0  0x00007f752567c589 __poll (libc.so.6)
>                #1  0x00007f75298ebbe6 n/a (libglib-2.0.so.0)
>                #2  0x00007f75298ebfa2 g_main_loop_run (libglib-2.0.so.0)
>                #3  0x00007f7530f38610 _ZN3WTF7RunLoop3runEv (libjavascriptcoregtk-4.0.so.18)
>                #4  0x00007f7530f0f73f _ZN3WTF6Thread10entryPointEPNS0_16NewThreadContextE (libjavascriptcoregtk-4.0.so.18)
>                #5  0x00007f7530f366ed n/a (libjavascriptcoregtk-4.0.so.18)
>                #6  0x00007f752dd59594 start_thread (libpthread.so.0)
>                #7  0x00007f752568700f __clone (libc.so.6)
>                
>                Stack trace of thread 6719:
>                #0  0x00007f752567c589 __poll (libc.so.6)
>                #1  0x00007f75298ebbe6 n/a (libglib-2.0.so.0)
>                #2  0x00007f75298ebfa2 g_main_loop_run (libglib-2.0.so.0)
>                #3  0x00007f7530f38610 _ZN3WTF7RunLoop3runEv (libjavascriptcoregtk-4.0.so.18)
>                #4  0x00007f7530f0f73f _ZN3WTF6Thread10entryPointEPNS0_16NewThreadContextE (libjavascriptcoregtk-4.0.so.18)
>                #5  0x00007f7530f366ed n/a (libjavascriptcoregtk-4.0.so.18)
>                #6  0x00007f752dd59594 start_thread (libpthread.so.0)
>                #7  0x00007f752568700f __clone (libc.so.6)
>                
>                Stack trace of thread 6887:
>                #0  0x00007f752dd5f87a pthread_cond_timedwait@@GLIBC_2.3.2 (libpthread.so.0)
>                #1  0x00007f7530f3725e _ZN3WTF15ThreadCondition9timedWaitERNS_5MutexENS_8WallTimeE (libjavascriptcoregtk-4.0.so.18)
>                #2  0x00007f7530f0ba63 _ZN3WTF10ParkingLot21parkConditionallyImplEPKvRKNS_12ScopedLambdaIFbvEEERKNS3_IFvvEEERKNS_24TimeWithDynamicClockTypeE (libjavascriptcoregtk-4.0.so.18)
>                #3  0x00007f7530ef4c9b n/a (libjavascriptcoregtk-4.0.so.18)
>                #4  0x00007f7530f0f73f _ZN3WTF6Thread10entryPointEPNS0_16NewThreadContextE (libjavascriptcoregtk-4.0.so.18)
>                #5  0x00007f7530f366ed n/a (libjavascriptcoregtk-4.0.so.18)
>                #6  0x00007f752dd59594 start_thread (libpthread.so.0)
>                #7  0x00007f752568700f __clone (libc.so.6)
>                
>                Stack trace of thread 6716:
>                #0  0x00007f752567c589 __poll (libc.so.6)
>                #1  0x00007f75298ebbe6 n/a (libglib-2.0.so.0)
>                #2  0x00007f75298ebfa2 g_main_loop_run (libglib-2.0.so.0)
>                #3  0x00007f7530f38610 _ZN3WTF7RunLoop3runEv (libjavascriptcoregtk-4.0.so.18)
>                #4  0x00007f7530f0f73f _ZN3WTF6Thread10entryPointEPNS0_16NewThreadContextE (libjavascriptcoregtk-4.0.so.18)
>                #5  0x00007f7530f366ed n/a (libjavascriptcoregtk-4.0.so.18)
>                #6  0x00007f752dd59594 start_thread (libpthread.so.0)
>                #7  0x00007f752568700f __clone (libc.so.6)
>                
>                Stack trace of thread 6763:
>                #0  0x00007f752567ddf7 ioctl (libc.so.6)
>                #1  0x00007f74bb3ce540 drmIoctl (libdrm.so.2)
>                #2  0x00007f74baa0ea15 n/a (i965_dri.so)
>                #3  0x00007f74baa09a94 n/a (i965_dri.so)
>                #4  0x00007f74baa0bbd9 n/a (i965_dri.so)
>                #5  0x00007f74baa45879 n/a (i965_dri.so)
>                #6  0x00007f74ba799b34 n/a (i965_dri.so)
>                #7  0x00007f74ba79c7da n/a (i965_dri.so)
>                #8  0x00007f74ba79fc4c n/a (i965_dri.so)
>                #9  0x00007f7533dec8f9 _ZN7WebCore15BitmapTextureGL23updateContentsNoSwizzleEPKvRKNS_7IntRectERKNS_8IntPointEijj (libwebkit2gtk-4.0.so.37)
>                #10 0x00007f7533deceb1 _ZN7WebCore15BitmapTextureGL14updateContentsEPKvRKNS_7IntRectERKNS_8IntPointEiNS_13BitmapTexture18UpdateContentsFlagE (libwebkit2gtk-4.0.so.37)
>                #11 0x00007f7532a26493 _ZN6WebKit27CoordinatedBackingStoreTile11swapBuffersERN7WebCore13TextureMapperE (libwebkit2gtk-4.0.so.37)
>                #12 0x00007f7532a295ec _ZN6WebKit23CoordinatedBackingStore20commitTileOperationsERN7WebCore13TextureMapperE (libwebkit2gtk-4.0.so.37)
>                #13 0x00007f7532a296e5 _ZN6WebKit24CoordinatedGraphicsScene35commitPendingBackingStoreOperationsEv (libwebkit2gtk-4.0.so.37)
>                #14 0x00007f7532a2c1c2 _ZN6WebKit24CoordinatedGraphicsScene16commitSceneStateERKN7WebCore24CoordinatedGraphicsStateE (libwebkit2gtk-4.0.so.37)
>                #15 0x00007f7532a2c252 _ZN6WebKit24CoordinatedGraphicsScene17applyStateChangesERKN3WTF6VectorIN7WebCore24CoordinatedGraphicsStateELm0ENS1_15CrashOnOverflowELm16ENS1_10FastMallocEEE (libwebkit2gtk-4.0.so.37)
>                #16 0x00007f7532a30b85 _ZN6WebKit18ThreadedCompositor15renderLayerTreeEv (libwebkit2gtk-4.0.so.37)
>                #17 0x00007f7530f38187 n/a (libjavascriptcoregtk-4.0.so.18)
>                #18 0x00007f75298eb8ad g_main_context_dispatch (libglib-2.0.so.0)
>                #19 0x00007f75298ebc78 n/a (libglib-2.0.so.0)
>                #20 0x00007f75298ebfa2 g_main_loop_run (libglib-2.0.so.0)
>                #21 0x00007f7530f38610 _ZN3WTF7RunLoop3runEv (libjavascriptcoregtk-4.0.so.18)
>                #22 0x00007f7530f0f73f _ZN3WTF6Thread10entryPointEPNS0_16NewThreadContextE (libjavascriptcoregtk-4.0.so.18)
>                #23 0x00007f7530f366ed n/a (libjavascriptcoregtk-4.0.so.18)
>                #24 0x00007f752dd59594 start_thread (libpthread.so.0)
>                #25 0x00007f752568700f __clone (libc.so.6)
>
>GNU gdb (GDB) Fedora 8.1-15.fc28
>Copyright (C) 2018 Free Software Foundation, Inc.
>License GPLv3+: GNU GPL version 3 or later <http://gnu.org/licenses/gpl.html>
>This is free software: you are free to change and redistribute it.
>There is NO WARRANTY, to the extent permitted by law.  Type "show copying"
>and "show warranty" for details.
>This GDB was configured as "x86_64-redhat-linux-gnu".
>Type "show configuration" for configuration details.
>For bug reporting instructions, please see:
><http://www.gnu.org/software/gdb/bugs/>.
>Find the GDB manual and other documentation resources online at:
><http://www.gnu.org/software/gdb/documentation/>.
>For help, type "help".
>Type "apropos word" to search for commands related to "word"...
>Reading symbols from /usr/libexec/webkit2gtk-4.0/WebKitWebProcess...Reading symbols from /usr/lib/debug/usr/libexec/webkit2gtk-4.0/WebKitWebProcess-2.20.2-1.fc28.x86_64.debug...done.
>done.
>
>warning: core file may not match specified executable file.
>[New LWP 6696]
>[New LWP 6704]
>[New LWP 6705]
>[New LWP 6706]
>[New LWP 6761]
>[New LWP 6715]
>[New LWP 6786]
>[New LWP 6794]
>[New LWP 6793]
>[New LWP 6795]
>[New LWP 6815]
>[New LWP 6884]
>[New LWP 6895]
>[New LWP 6837]
>[New LWP 6828]
>[New LWP 6785]
>[New LWP 6713]
>[New LWP 6707]
>[New LWP 6714]
>[New LWP 6719]
>[New LWP 6887]
>[New LWP 6716]
>[New LWP 6763]
>[Thread debugging using libthread_db enabled]
>Using host libthread_db library "/lib64/libthread_db.so.1".
>Core was generated by `/usr/libexec/webkit2gtk-4.0/WebKitWebProcess 6 55'.
>Program terminated with signal SIGABRT, Aborted.
>#0  __GI_raise (sig=sig@entry=6) at ../sysdeps/unix/sysv/linux/raise.c:50
>50	  return ret;
>[Current thread is 1 (Thread 0x7f7534cc5540 (LWP 6696))]
>(gdb) thread apply all bt full
>
>Thread 23 (Thread 0x7f74873ff700 (LWP 6763)):
>#0  0x00007f752567ddf7 in ioctl () at ../sysdeps/unix/syscall-template.S:78
>No locals.
>#1  0x00007f74bb3ce540 in drmIoctl (fd=25, request=request@entry=1074553951, arg=arg@entry=0x7f74873fe214) at ../xf86drm.c:188
>        ret = <optimized out>
>#2  0x00007f74baa0ea15 in bo_alloc_internal (bufmgr=0x556e7a9cab60, name=name@entry=0x7f74bad7e4a6 "tmp_tex_subimage_src", size=size@entry=1210368, flags=flags@entry=0, 
>    tiling_mode=tiling_mode@entry=0, stride=stride@entry=0, alignment=0) at brw_bufmgr.c:403
>        create = {size = 1310720, handle = 267, pad = 0}
>        sd = {handle = 267, read_domains = 1, write_domain = 0}
>        bo = 0x7f749b2a7380
>        page_size = <optimized out>
>        ret = <optimized out>
>        bucket = 0x556e7a9cae30
>        alloc_from_cache = false
>        bo_size = 1310720
>        busy = <optimized out>
>        zeroed = false
>#3  0x00007f74baa0ec01 in brw_bo_alloc (bufmgr=<optimized out>, name=name@entry=0x7f74bad7e4a6 "tmp_tex_subimage_src", size=size@entry=1210368, alignment=alignment@entry=64)
>    at brw_bufmgr.c:431
>No locals.
>#4  0x00007f74baa09a94 in blorp_get_client_bo (brw=brw@entry=0x7f749958b540, w=w@entry=512, h=h@entry=296, d=d@entry=1, target=target@entry=3553, format=format@entry=32993, 
>    type=5121, pixels=0x7f7481500000, packing=0x7f74995a74f8, offset_out=0x7f74873fe354, row_stride_out=0x7f74873fe358, image_stride_out=0x7f74873fe35c, read_only=true)
>    at brw_blorp.c:825
>        bo = <optimized out>
>        dims = <optimized out>
>        first_pixel = 2099200
>        last_pixel = <optimized out>
>        stride = <optimized out>
>        cpp = 4
>        size = 1210368
>#5  0x00007f74baa0bbd9 in brw_blorp_upload_miptree (brw=brw@entry=0x7f749958b540, dst_mt=0x7f749b017de0, dst_format=MESA_FORMAT_R8G8B8A8_UNORM, level=level@entry=0, 
>    x=x@entry=0, y=y@entry=0, z=0, width=512, height=296, depth=1, target=3553, format=32993, type=5121, pixels=0x7f7481500000, packing=0x7f74995a74f8) at brw_blorp.c:918
>        src_format = MESA_FORMAT_B8G8R8A8_UNORM
>        src_offset = 0
>        src_row_stride = 4096
>        src_image_stride = 1212416
>        src_bo = <optimized out>
>        result = <optimized out>
>#6  0x00007f74baa45879 in intel_texsubimage_blorp (dims=2, packing=0x7f74995a74f8, pixels=0x7f7481500000, type=5121, format=32993, depth=1, height=296, width=512, z=0, y=0, 
>    x=0, tex_image=0x7f749b03a9e0, brw=0x7f749958b540) at intel_tex_image.c:148
>---Type <return> to continue, or q <return> to quit---
>        intel_image = 0x7f749b03a9e0
>        mt_level = 0
>        mt_z = 0
>        intel_image = <optimized out>
>        mt_level = <optimized out>
>        mt_z = <optimized out>
>#7  intel_upload_tex (ctx=0x7f749958b540, dims=2, texImage=0x7f749b03a9e0, xoffset=0, yoffset=0, zoffset=0, width=512, height=296, depth=1, format=32993, type=5121, 
>    pixels=0x7f7481500000, packing=0x7f74995a74f8) at intel_tex_image.c:334
>        brw = 0x7f749958b540
>        mt = <optimized out>
>        ok = <optimized out>
>        tex_busy = <optimized out>
>#8  0x00007f74ba799b34 in texture_sub_image (ctx=ctx@entry=0x7f749958b540, dims=dims@entry=2, texObj=texObj@entry=0x7f749b223a90, texImage=0x7f749b03a9e0, 
>    target=target@entry=3553, level=level@entry=0, xoffset=<optimized out>, yoffset=0, zoffset=0, width=512, height=296, depth=1, format=32993, type=5121, 
>    pixels=0x7f7481500000, dsa=false) at main/teximage.c:3318
>No locals.
>#9  0x00007f74ba79c7da in texsubimage_err (ctx=0x7f749958b540, dims=2, target=3553, level=0, xoffset=0, yoffset=0, zoffset=0, width=512, height=296, depth=1, format=32993, 
>    type=5121, pixels=0x7f7481500000, callerName=0x7f74bad36ae9 "glTexSubImage2D") at main/teximage.c:3376
>        texObj = 0x7f749b223a90
>        texImage = <optimized out>
>        zoffset = 0
>        texObj = <optimized out>
>        texImage = <optimized out>
>        pixels = 0x7f7481500000
>        width = 512
>        target = 3553
>        callerName = 0x7f74bad36ae9 "glTexSubImage2D"
>        type = 5121
>        depth = 1
>        xoffset = 0
>        ctx = 0x7f749958b540
>        format = 32993
>        height = 296
>        yoffset = 0
>        level = 0
>        dims = 2
>        texObj = <optimized out>
>        texImage = <optimized out>
>#10 0x00007f74ba79fc4c in _mesa_TexSubImage2D (target=<optimized out>, level=<optimized out>, xoffset=<optimized out>, yoffset=<optimized out>, width=<optimized out>, 
>    height=<optimized out>, format=32993, type=5121, pixels=0x7f7481500000) at main/teximage.c:3594
>        ctx = <optimized out>
>---Type <return> to continue, or q <return> to quit---
>#11 0x00007f7533dec8f9 in WebCore::BitmapTextureGL::updateContentsNoSwizzle (this=0x7f74849f2da8, srcData=0x7f7481500000, targetRect=..., sourceOffset=..., bytesPerLine=4096, 
>    bytesPerPixel=4, glFormat=32993) at /usr/src/debug/webkit2gtk3-2.20.2-1.fc28.x86_64/Source/WebCore/platform/graphics/IntPoint.h:79
>        contextSupportsUnpackSubimage = true
>#12 0x00007f7533deceb1 in WebCore::BitmapTextureGL::updateContents (this=0x7f74849f2da8, srcData=<optimized out>, targetRect=..., sourceOffset=..., 
>    bytesPerLine=<optimized out>, updateContentsFlag=<optimized out>)
>    at /usr/src/debug/webkit2gtk3-2.20.2-1.fc28.x86_64/Source/WebCore/platform/graphics/texmap/BitmapTextureGL.cpp:169
>        data = <optimized out>
>        temporaryData = {<WTF::VectorBuffer<char, 0, WTF::FastMalloc>> = {<WTF::VectorBufferBase<char, WTF::FastMalloc>> = {m_buffer = 0x0, m_capacity = 0, m_size = 0, 
>              m_mask = 0}, <No data fields>}, <No data fields>}
>        adjustedSourceOffset = {m_x = 512, m_y = 512}
>        requireSubImageBuffer = <optimized out>
>#13 0x00007f7532a26493 in WebKit::CoordinatedBackingStoreTile::swapBuffers (this=0x7f746250a068, textureMapper=...)
>    at /usr/src/debug/webkit2gtk3-2.20.2-1.fc28.x86_64/Source/WebCore/platform/graphics/nicosia/NicosiaBuffer.h:52
>        unscaledTileRect = <optimized out>
>#14 0x00007f7532a295ec in WebKit::CoordinatedBackingStore::commitTileOperations (this=<optimized out>, textureMapper=...)
>    at /usr/src/debug/webkit2gtk3-2.20.2-1.fc28.x86_64/Source/WebKit/Shared/CoordinatedGraphics/CoordinatedBackingStore.cpp:177
>        tile = @0x7f746250a068: {<WebCore::TextureMapperTile> = {_vptr.TextureMapperTile = 0x7f753491a820 <vtable for WebKit::CoordinatedBackingStoreTile+16>, m_texture = {
>              static isRefPtr = <optimized out>, m_ptr = 0x7f74849f2da8}, m_rect = {m_location = {m_x = 256, m_y = 0}, m_size = {m_width = 256, m_height = 148}}}, m_buffer = {
>            static isRefPtr = <optimized out>, m_ptr = 0x7f7484970ba0}, m_sourceRect = {m_location = {m_x = 0, m_y = 0}, m_size = {m_width = 512, m_height = 296}}, 
>          m_tileRect = {m_location = {m_x = 512, m_y = 0}, m_size = {m_width = 512, m_height = 296}}, m_bufferOffset = {m_x = 512, m_y = 512}, m_scale = 2}
>        __for_range = <optimized out>
>        __for_begin = <optimized out>
>        __for_end = <optimized out>
>#15 0x00007f7532a296e5 in WebKit::CoordinatedGraphicsScene::commitPendingBackingStoreOperations (this=0x7f748766e000)
>    at /usr/src/debug/webkit2gtk3-2.20.2-1.fc28.x86_64/Source/WebKit/Shared/CoordinatedGraphics/CoordinatedGraphicsScene.cpp:534
>No locals.
>#16 0x00007f7532a2c1c2 in WebKit::CoordinatedGraphicsScene::commitSceneState (this=0x7f748766e000, state=...)
>    at /usr/src/debug/webkit2gtk3-2.20.2-1.fc28.x86_64/Source/WebKit/Shared/CoordinatedGraphics/CoordinatedGraphicsScene.cpp:558
>        layer = <optimized out>
>        __for_range = <optimized out>
>        __for_begin = <optimized out>
>        __for_end = <optimized out>
>#17 0x00007f7532a2c252 in WebKit::CoordinatedGraphicsScene::applyStateChanges (this=0x7f748766e000, states=...)
>    at /usr/src/debug/webkit2gtk3-2.20.2-1.fc28.x86_64/Source/WebKit/Shared/CoordinatedGraphics/CoordinatedGraphicsScene.cpp:91
>        state = @0x7f7438d6f000: {rootCompositingLayer = 1, scrollPosition = {m_x = 0, m_y = 0}, contentsSize = {m_width = 0, m_height = 0}, coveredRect = {m_location = {
>              m_x = 0, m_y = 0}, m_size = {m_width = 1600, m_height = 1115}}, 
>          layersToCreate = {<WTF::VectorBuffer<unsigned int, 0, WTF::FastMalloc>> = {<WTF::VectorBufferBase<unsigned int, WTF::FastMalloc>> = {m_buffer = 0x0, m_capacity = 0, 
>                m_size = 0, m_mask = 0}, <No data fields>}, <No data fields>}, 
>          layersToUpdate = {<WTF::VectorBuffer<std::pair<unsigned int, WebCore::CoordinatedGraphicsLayerState>, 0, WTF::FastMalloc>> = {<WTF::VectorBufferBase<std::pair<unsigned int, WebCore::CoordinatedGraphicsLayerState>, WTF::FastMalloc>> = {m_buffer = 0x7f7482a3e400, m_capacity = 16, m_size = 3, 
>                m_mask = 15}, <No data fields>}, <No data fields>}, 
>---Type <return> to continue, or q <return> to quit---
>          layersToRemove = {<WTF::VectorBuffer<unsigned int, 0, WTF::FastMalloc>> = {<WTF::VectorBufferBase<unsigned int, WTF::FastMalloc>> = {m_buffer = 0x0, m_capacity = 0, 
>                m_size = 0, m_mask = 0}, <No data fields>}, <No data fields>}, 
>          imagesToCreate = {<WTF::VectorBuffer<unsigned long, 0, WTF::FastMalloc>> = {<WTF::VectorBufferBase<unsigned long, WTF::FastMalloc>> = {m_buffer = 0x0, 
>                m_capacity = 0, m_size = 0, m_mask = 0}, <No data fields>}, <No data fields>}, 
>          imagesToRemove = {<WTF::VectorBuffer<unsigned long, 0, WTF::FastMalloc>> = {<WTF::VectorBufferBase<unsigned long, WTF::FastMalloc>> = {m_buffer = 0x0, 
>                m_capacity = 0, m_size = 0, m_mask = 0}, <No data fields>}, <No data fields>}, 
>          imagesToUpdate = {<WTF::VectorBuffer<std::pair<unsigned long, WTF::RefPtr<Nicosia::Buffer, WTF::DumbPtrTraits<Nicosia::Buffer> > >, 0, WTF::FastMalloc>> = {<WTF::VectorBufferBase<std::pair<unsigned long, WTF::RefPtr<Nicosia::Buffer, WTF::DumbPtrTraits<Nicosia::Buffer> > >, WTF::FastMalloc>> = {m_buffer = 0x0, m_capacity = 0, m_size = 0, 
>                m_mask = 0}, <No data fields>}, <No data fields>}, 
>          imagesToClear = {<WTF::VectorBuffer<unsigned long, 0, WTF::FastMalloc>> = {<WTF::VectorBufferBase<unsigned long, WTF::FastMalloc>> = {m_buffer = 0x0, 
>                m_capacity = 0, m_size = 0, m_mask = 0}, <No data fields>}, <No data fields>}, 
>          updateAtlasesToCreate = {<WTF::VectorBuffer<std::pair<unsigned int, WTF::RefPtr<Nicosia::Buffer, WTF::DumbPtrTraits<Nicosia::Buffer> > >, 0, WTF::FastMalloc>> = {<WTF::VectorBufferBase<std::pair<unsigned int, WTF::RefPtr<Nicosia::Buffer, WTF::DumbPtrTraits<Nicosia::Buffer> > >, WTF::FastMalloc>> = {m_buffer = 0x0, m_capacity = 0, 
>                m_size = 0, m_mask = 0}, <No data fields>}, <No data fields>}}
>        __for_range = <optimized out>
>        __for_begin = 0x7f7438d6f000
>        __for_end = 0x7f7438d6f0e8
>#18 0x00007f7532a30b85 in WebKit::ThreadedCompositor::renderLayerTree (this=0x7f7487831e70)
>    at /usr/src/debug/webkit2gtk3-2.20.2-1.fc28.x86_64/Source/WebKit/Shared/CoordinatedGraphics/threadedcompositor/ThreadedCompositor.cpp:259
>        viewportSize = <optimized out>
>        scrollPosition = <optimized out>
>        scaleFactor = <optimized out>
>        drawsBackground = <optimized out>
>        needsResize = <optimized out>
>        states = <optimized out>
>        atlasesToRemove = <optimized out>
>        viewportTransform = <optimized out>
>        locker = <optimized out>
>        coordinateUpdate = <optimized out>
>        state = <optimized out>
>        __for_range = <optimized out>
>        __for_begin = <optimized out>
>        __for_end = <optimized out>
>#19 0x00007f7530f38187 in WTF::RunLoop::TimerBase::<lambda(gpointer)>::operator() (__closure=0x0, userData=0x7f7487614c60)
>    at /usr/src/debug/webkit2gtk3-2.20.2-1.fc28.x86_64/Source/WTF/wtf/glib/RunLoopGLib.cpp:170
>        timer = 0x7f7487614c60
>        source = 0x556e7b1a6230
>#20 WTF::RunLoop::TimerBase::<lambda(gpointer)>::_FUN(gpointer) () at /usr/src/debug/webkit2gtk3-2.20.2-1.fc28.x86_64/Source/WTF/wtf/glib/RunLoopGLib.cpp:176
>No locals.
>#21 0x00007f75298eb8ad in g_main_dispatch (context=0x7f7498000b20) at gmain.c:3177
>        dispatch = 0x7f7530f37bd0 <WTF::<lambda(GSource*, GSourceFunc, gpointer)>::_FUN(GSource *, GSourceFunc, gpointer)>
>---Type <return> to continue, or q <return> to quit---
>        prev_source = 0x0
>        was_in_call = 0
>        user_data = 0x7f7487614c60
>        callback = 0x7f7530f38170 <WTF::RunLoop::TimerBase::<lambda(gpointer)>::_FUN(gpointer)>
>        cb_funcs = 0x7f7529bb5280 <g_source_callback_funcs>
>        cb_data = 0x556e7b1a62a0
>        need_destroy = <optimized out>
>        source = 0x556e7b1a6230
>        current = 0x556e7a77a350
>        i = 0
>        current = <optimized out>
>        i = <optimized out>
>        __func__ = "g_main_dispatch"
>        source = <optimized out>
>        _g_boolean_var_ = <optimized out>
>        was_in_call = <optimized out>
>        user_data = <optimized out>
>        callback = <optimized out>
>        cb_funcs = <optimized out>
>        cb_data = <optimized out>
>        need_destroy = <optimized out>
>        dispatch = <optimized out>
>        prev_source = <optimized out>
>        _g_boolean_var_ = <optimized out>
>#22 g_main_context_dispatch (context=context@entry=0x7f7498000b20) at gmain.c:3830
>No locals.
>#23 0x00007f75298ebc78 in g_main_context_iterate (context=0x7f7498000b20, block=block@entry=1, dispatch=dispatch@entry=1, self=<optimized out>) at gmain.c:3903
>        max_priority = 2147483647
>        timeout = 217
>        some_ready = 1
>        nfds = <optimized out>
>        allocated_nfds = 1
>        fds = 0x7f7498002be0
>#24 0x00007f75298ebfa2 in g_main_loop_run (loop=0x7f7498002890) at gmain.c:4099
>        self = <optimized out>
>        __func__ = "g_main_loop_run"
>#25 0x00007f7530f38610 in WTF::RunLoop::run () at /usr/src/debug/webkit2gtk3-2.20.2-1.fc28.x86_64/Source/WTF/wtf/glib/RunLoopGLib.cpp:96
>        runLoop = @0x7f748761f000: {<WTF::FunctionDispatcher> = {<WTF::ThreadSafeRefCounted<WTF::FunctionDispatcher>> = {<WTF::ThreadSafeRefCountedBase> = {
>                m_refCount = {<std::__atomic_base<unsigned int>> = {static _S_alignment = 4, _M_i = 3}, <No data fields>}}, <No data fields>}, 
>            _vptr.FunctionDispatcher = 0x7f753118c2a8 <vtable for WTF::RunLoop+16>}, m_functionQueueLock = {static isHeldBit = 1 '\001', static hasParkedBit = 2 '\002', 
>            m_byte = {value = {<std::__atomic_base<unsigned char>> = {static _S_alignment = 1, _M_i = 0 '\000'}, <No data fields>}}}, m_functionQueue = {m_start = 4, 
>---Type <return> to continue, or q <return> to quit---
>            m_end = 4, m_buffer = {<WTF::VectorBufferBase<WTF::Function<void()>, WTF::FastMalloc>> = {m_buffer = 0x7f748764c500, m_capacity = 16, m_size = 0, 
>                m_mask = 15}, <No data fields>}}
>, m_mainContext = {m_ptr = 0x7f7498000b20}, 
>          m_mainLoops = {<WTF::VectorBuffer<WTF::GRefPtr<_GMainLoop>, 0, WTF::FastMalloc>> = {<WTF::VectorBufferBase<WTF::GRefPtr<_GMainLoop>, WTF::FastMalloc>> = {
>                m_buffer = 0x7f7487672000, m_capacity = 16, m_size = 1, m_mask = 15}, <No data fields>}, <No data fields>}, m_source = {m_ptr = 0x7f7498002c70}}
>        mainContext = 0x7f7498000b20
>        innermostLoop = 0x7f7498002890
>        nestedMainLoop = <optimized out>
>#26 0x00007f7530f0f73f in WTF::Function<void ()>::operator()() const (this=<synthetic pointer>)
>    at /usr/src/debug/webkit2gtk3-2.20.2-1.fc28.x86_64/Source/WTF/wtf/Threading.cpp:129
>No locals.
>#27 WTF::Thread::entryPoint (newThreadContext=0x7f748761b6e0) at /usr/src/debug/webkit2gtk3-2.20.2-1.fc28.x86_64/Source/WTF/wtf/Threading.cpp:129
>        function = {m_callableWrapper = std::unique_ptr<WTF::Function<void()>::CallableWrapperBase> = {get() = 0x7f74874ec7e0}}
>#28 0x00007f7530f366ed in WTF::wtfThreadEntryPoint (context=<optimized out>) at /usr/src/debug/webkit2gtk3-2.20.2-1.fc28.x86_64/Source/WTF/wtf/ThreadingPthreads.cpp:223
>No locals.
>#29 0x00007f752dd59594 in start_thread (arg=<optimized out>) at pthread_create.c:463
>        pd = <optimized out>
>        now = <optimized out>
>        unwind_buf = {cancel_jmp_buf = {{jmp_buf = {140138462050048, 5358788787189247362, 140736141690814, 140736141690815, 140736141690960, 140736141690960, 
>                -5424813911343698558, -5425599871657382526}, mask_was_saved = 0}}, priv = {pad = {0x0, 0x0, 0x0, 0x0}, data = {prev = 0x0, cleanup = 0x0, canceltype = 0}}}
>        not_first_call = <optimized out>
>#30 0x00007f752568700f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95
>No locals.
>
>Thread 22 (Thread 0x7f75097fa700 (LWP 6716)):
>#0  0x00007f752567c589 in __GI___poll (fds=0x7f74b00013e0, nfds=2, timeout=-1) at ../sysdeps/unix/sysv/linux/poll.c:29
>        resultvar = 18446744073709551100
>        sc_cancel_oldtype = 0
>        sc_ret = <optimized out>
>#1  0x00007f75298ebbe6 in g_main_context_poll (priority=<optimized out>, n_fds=2, fds=0x7f74b00013e0, timeout=<optimized out>, context=0x7f74b0000b20) at gmain.c:4204
>        ret = <optimized out>
>        errsv = <optimized out>
>        poll_func = 0x7f75298fb520 <g_poll>
>        poll_func = <optimized out>
>        ret = <optimized out>
>        errsv = <optimized out>
>#2  g_main_context_iterate (context=0x7f74b0000b20, block=block@entry=1, dispatch=dispatch@entry=1, self=<optimized out>) at gmain.c:3898
>        max_priority = 2147483647
>        timeout = -1
>        some_ready = <optimized out>
>        nfds = 2
>        allocated_nfds = 2
>---Type <return> to continue, or q <return> to quit---
>        fds = 0x7f74b00013e0
>#3  0x00007f75298ebfa2 in g_main_loop_run (loop=0x7f74b0003e40) at gmain.c:4099
>        self = <optimized out>
>        __func__ = "g_main_loop_run"
>#4  0x00007f7530f38610 in WTF::RunLoop::run () at /usr/src/debug/webkit2gtk3-2.20.2-1.fc28.x86_64/Source/WTF/wtf/glib/RunLoopGLib.cpp:96
>        runLoop = @0x7f75101e3000: {<WTF::FunctionDispatcher> = {<WTF::ThreadSafeRefCounted<WTF::FunctionDispatcher>> = {<WTF::ThreadSafeRefCountedBase> = {
>                m_refCount = {<std::__atomic_base<unsigned int>> = {static _S_alignment = 4, _M_i = 1}, <No data fields>}}, <No data fields>}, 
>            _vptr.FunctionDispatcher = 0x7f753118c2a8 <vtable for WTF::RunLoop+16>}, m_functionQueueLock = {static isHeldBit = 1 '\001', static hasParkedBit = 2 '\002', 
>            m_byte = {value = {<std::__atomic_base<unsigned char>> = {static _S_alignment = 1, _M_i = 0 '\000'}, <No data fields>}}}, m_functionQueue = {m_start = 4, 
>            m_end = 4, m_buffer = {<WTF::VectorBufferBase<WTF::Function<void()>, WTF::FastMalloc>> = {m_buffer = 0x7f75101fd380, m_capacity = 16, m_size = 0, 
>                m_mask = 15}, <No data fields>}}, m_mainContext = {m_ptr = 0x7f74b0000b20}, 
>          m_mainLoops = {<WTF::VectorBuffer<WTF::GRefPtr<_GMainLoop>, 0, WTF::FastMalloc>> = {<WTF::VectorBufferBase<WTF::GRefPtr<_GMainLoop>, WTF::FastMalloc>> = {
>                m_buffer = 0x7f75101e2000, m_capacity = 16, m_size = 1, m_mask = 15}, <No data fields>}, <No data fields>}, m_source = {m_ptr = 0x7f74b0003e60}}
>        mainContext = 0x7f74b0000b20
>        innermostLoop = 0x7f74b0003e40
>        nestedMainLoop = <optimized out>
>#5  0x00007f7530f0f73f in WTF::Function<void ()>::operator()() const (this=<synthetic pointer>)
>    at /usr/src/debug/webkit2gtk3-2.20.2-1.fc28.x86_64/Source/WTF/wtf/Threading.cpp:129
>No locals.
>#6  WTF::Thread::entryPoint (newThreadContext=0x7f75101f7140) at /usr/src/debug/webkit2gtk3-2.20.2-1.fc28.x86_64/Source/WTF/wtf/Threading.cpp:129
>        function = {m_callableWrapper = std::unique_ptr<WTF::Function<void()>::CallableWrapperBase> = {get() = 0x7f75101fb0f0}}
>#7  0x00007f7530f366ed in WTF::wtfThreadEntryPoint (context=<optimized out>) at /usr/src/debug/webkit2gtk3-2.20.2-1.fc28.x86_64/Source/WTF/wtf/ThreadingPthreads.cpp:223
>No locals.
>#8  0x00007f752dd59594 in start_thread (arg=<optimized out>) at pthread_create.c:463
>        pd = <optimized out>
>        now = <optimized out>
>        unwind_buf = {cancel_jmp_buf = {{jmp_buf = {140140647261952, 5358788787189247362, 140736141709790, 140736141709791, 140736141709936, 140736141709936, 
>                -5425662182953915006, -5425599871657382526}, mask_was_saved = 0}}, priv = {pad = {0x0, 0x0, 0x0, 0x0}, data = {prev = 0x0, cleanup = 0x0, canceltype = 0}}}
>        not_first_call = <optimized out>
>#9  0x00007f752568700f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95
>No locals.
>
>Thread 21 (Thread 0x7f746f1ff700 (LWP 6887)):
>#0  futex_abstimed_wait_cancelable (private=0, abstime=0x7f746f1fe940, expected=0, futex_word=0x7f74439f6c64) at ../sysdeps/unix/sysv/linux/futex-internal.h:205
>        __ret = -516
>        oldtype = 0
>        err = <optimized out>
>        oldtype = <optimized out>
>        err = <optimized out>
>        __ret = <optimized out>
>        resultvar = <optimized out>
>---Type <return> to continue, or q <return> to quit---
>        __arg6 = <optimized out>
>        __arg5 = <optimized out>
>        __arg4 = <optimized out>
>        __arg3 = <optimized out>
>        __arg2 = <optimized out>
>        __arg1 = <optimized out>
>        _a6 = <optimized out>
>        _a5 = <optimized out>
>        _a4 = <optimized out>
>        _a3 = <optimized out>
>        _a2 = <optimized out>
>        _a1 = <optimized out>
>#1  __pthread_cond_wait_common (abstime=0x7f746f1fe940, mutex=0x7f74439f6c10, cond=0x7f74439f6c38) at pthread_cond_wait.c:539
>        spin = 0
>        buffer = {__routine = 0x7f752dd5f2a0 <__condvar_cleanup_waiting>, __arg = 0x7f746f1fe8c0, __canceltype = 1134521360, __prev = 0x0}
>        cbuffer = {wseq = 39, cond = 0x7f74439f6c38, mutex = 0x7f74439f6c10, private = 0}
>        err = <optimized out>
>        g = 1
>        flags = <optimized out>
>        g1_start = <optimized out>
>        maxspin = 0
>        signals = <optimized out>
>        result = 0
>        wseq = 39
>        seq = 19
>        private = 0
>        maxspin = <optimized out>
>        err = <optimized out>
>        result = <optimized out>
>        wseq = <optimized out>
>        g = <optimized out>
>        seq = <optimized out>
>        flags = <optimized out>
>        private = <optimized out>
>        signals = <optimized out>
>        g1_start = <optimized out>
>        spin = <optimized out>
>        buffer = <optimized out>
>        cbuffer = <optimized out>
>        rt = <optimized out>
>        s = <optimized out>
>---Type <return> to continue, or q <return> to quit---
>#2  __pthread_cond_timedwait (cond=cond@entry=0x7f74439f6c38, mutex=mutex@entry=0x7f74439f6c10, abstime=abstime@entry=0x7f746f1fe940) at pthread_cond_wait.c:667
>No locals.
>#3  0x00007f7530f3725e in WTF::ThreadCondition::timedWait (this=this@entry=0x7f74439f6c38, mutex=..., absoluteTime=...)
>    at /usr/src/debug/webkit2gtk3-2.20.2-1.fc28.x86_64/Source/WTF/wtf/ThreadingPrimitives.h:89
>        rawSeconds = 1527573977.470974
>        timeSeconds = 1527573977
>        timeNanoseconds = 470973968
>        targetTime = {tv_sec = 1527573977, tv_nsec = 470973968}
>#4  0x00007f7530f0ba63 in WTF::ParkingLot::parkConditionallyImpl(void const*, WTF::ScopedLambda<bool ()> const&, WTF::ScopedLambda<void ()> const&, WTF::TimeWithDynamicClockType const&) (address=address@entry=0x7f74876cfb63, validation=..., beforeSleep=..., timeout=...)
>    at /usr/src/debug/webkit2gtk3-2.20.2-1.fc28.x86_64/Source/WTF/wtf/ParkingLot.cpp:597
>        locker = {<WTF::AbstractLocker> = {<No data fields>}, m_lockable = 0x7f74439f6c10}
>        me = <optimized out>
>        enqueueResult = <optimized out>
>        didGetDequeued = <optimized out>
>        didDequeue = <optimized out>
>        result = <optimized out>
>#5  0x00007f7530ef4c9b in WTF::ParkingLot::parkConditionally<bool WTF::Condition::waitUntil<WTF::Lock>(WTF::Lock&, WTF::TimeWithDynamicClockType const&)::{lambda()#1}, bool WTF::Condition::waitUntil<WTF::Lock>(WTF::Lock&, WTF::TimeWithDynamicClockType const&)::{lambda()#2}>(void const*, bool WTF::Condition::waitUntil<WTF::Lock>(WTF::Lock&, WTF::TimeWithDynamicClockType const&)::{lambda()#1} const&, bool WTF::Condition::waitUntil<WTF::Lock>(WTF::Lock&, WTF::TimeWithDynamicClockType const&)::{lambda()#2} const&, WTF::TimeWithDynamicClockType const&) (timeout=..., beforeSleep=..., validation=..., address=0x7f74876cfb63) at /usr/src/debug/webkit2gtk3-2.20.2-1.fc28.x86_64/Source/WTF/wtf/Seconds.h:47
>No locals.
>#6  WTF::Condition::waitUntil<WTF::Lock> (timeout=..., lock=..., this=0x7f74876cfb63) at /usr/src/debug/webkit2gtk3-2.20.2-1.fc28.x86_64/Source/WTF/wtf/Condition.h:76
>        result = <optimized out>
>        result = <optimized out>
>#7  WTF::Condition::waitFor<WTF::Lock> (relativeTimeout=..., lock=..., this=0x7f74876cfb63) at /usr/src/debug/webkit2gtk3-2.20.2-1.fc28.x86_64/Source/WTF/wtf/Condition.h:116
>No locals.
>#8  WTF::AutomaticThread::<lambda()>::operator() (__closure=<optimized out>) at /usr/src/debug/webkit2gtk3-2.20.2-1.fc28.x86_64/Source/WTF/wtf/AutomaticThread.cpp:207
>        result = <optimized out>
>        awokenByNotify = <optimized out>
>        locker = {<WTF::AbstractLocker> = {<No data fields>}, m_lockable = 0x7f748749fcf4}
>        result = <optimized out>
>        thread = {static isRefPtr = <optimized out>, m_ptr = 0x7f74876cfb40}
>        stopImpl = <optimized out>
>        stopPermanently = {__this = 0x7f74876cfb40, __stopImpl = <synthetic pointer>
>../../gdb/dwarf2loc.c:2268: internal-error: value* coerce_pieced_ref(const value*): Assertion `closure->pieces.size () == 1' failed.
>A problem internal to GDB has been detected,
>further debugging may prove unreliable.
>Quit this debugging session? (y or n) 
>

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Attachments on bug 186044: 341473 | 341478