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docs(webkit): update core dump analisys instructions (#2778)

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Yury Semikhatsky 2020-06-30 17:00:16 -07:00 committed by GitHub
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browser_patches/webkit/cheatsheet.md
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@ -13,7 +13,15 @@ mkdir -p /tmp/coredumps
sudo bash -c 'echo "/tmp/coredumps/core-pid_%p.dump" > /proc/sys/kernel/core_pattern'
ulimit -c unlimited
```
Then to read stack traces run the following command:
```bash
Tools/jhbuild/jhbuild-wrapper --wpe run gdb --batch -ex "thread apply all bt" WebKitBuild/WPE/Release/bin/MiniBrowser /tmp/coredumps/core-pid_29652.dump &> trace.txt
# To find out crashing process name
file core-pid_29652.dump
# Point gdb to the local binary of the crashed process and the core file
gdb $HOME/.cache/ms-playwright/webkit-1292/minibrowser-gtk/WebKitWebProcess core-pid_29652
# Inside gdb update .so library search path to the local one
set solib-search-path /home/yurys/.cache/ms-playwright/webkit-1292/minibrowser-gtk
# Finally print backtrace
bt
```