[Webkit-unassigned] [Bug 206162] [GTK] segfault in libwebkit2gtk-4.0.so.37.39.3

bugzilla-daemon at webkit.org bugzilla-daemon at webkit.org
Sun Jan 12 23:21:48 PST 2020


--- Comment #1 from crvi <crvisqr at gmail.com> ---
Both crashes are at the same spot in code 

sid at unstable:~/source/git/epiphany/build/src$ gdb ./epiphany $(pgrep epiphany)

(gdb) info share
>From                To                  Syms Read   Shared Object Library
0x00007f0930f6ec70  0x00007f0932e8da7e  Yes         /lib/x86_64-linux-gnu/libwebkit2gtk-4.0.so.37

(gdb) find /b 0x00007f0930f6ec70, 0x00007f0932e8da7e, 0x48, 0x8b, 0x45, 0x00, 0x48, 0x8b, 0x40, 0x10, 0x48, 0x89, 0x44, 0x24, 0x08, 0x49, 0x8b, 0x46, 0x08, 0x48, 0x89, 0x44, 0x24, 0x30, 
0x7f093157f024 <<lambda()>::operator()(void) const+100>
1 pattern found.

(gdb) info symbol 0x7f093157f024
webKitWebSrcMakeRequest(_GstBaseSrc*, bool)::{lambda()#1}::operator()() const + 100 in section .text of /lib/x86_64-linux-gnu/libwebkit2gtk-4.0.so.37

(gdb) disassemble /r 0x7f093157f024,+10
Dump of assembler code from 0x7f093157f024 to 0x7f093157f02e:
   0x00007f093157f024 <<lambda()>::operator()(void) const+100>: 48 8b 45 00     mov    0x0(%rbp),%rax   <--------------------------------
   0x00007f093157f028 <<lambda()>::operator()(void) const+104>: 48 8b 40 10     mov    0x10(%rax),%rax
   0x00007f093157f02c <<lambda()>::operator()(void) const+108>: 48 89 44 24 08  mov    %rax,0x8(%rsp)
End of assembler dump

0x0(%rbp) - NULL Pointer deference for the first member of the structure.

There was no crash dump ( core file ). So, no backtrace. I am not sure why I don't get core dumps for WebKitWebProcess, though I've configured to capture all crashes which happen in the system. I've a lot of core files from other processes, but not from WebKitWebProcess. Ideas welcome !

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