[Pkg-chromium-maint] Bug#779717: FATAL:isolate_holder.cc(70)] Couldn't mmap v8 natives data file

[Mathieu Petit-Clair]

Backtrace with -dbg package installed:

Using host libthread_db library 
"/lib/x86_64-linux-gnu/libthread_db.so.1".
[0305/094827:FATAL:isolate_holder.cc(70)] Couldn't mmap v8 natives data 
file

Program received signal SIGABRT, Aborted.
0x00007ffff0b56107 in __GI_raise (sig=sig at entry=6) at 
../nptl/sysdeps/unix/sysv/linux/raise.c:56
56      ../nptl/sysdeps/unix/sysv/linux/raise.c: No such file or 
directory.
(gdb) bt
#0  0x00007ffff0b56107 in __GI_raise (sig=sig at entry=6) at 
../nptl/sysdeps/unix/sysv/linux/raise.c:56
#1  0x00007ffff0b574e8 in __GI_abort () at abort.c:89
#2  0x00005555564cdcb6 in base::debug::BreakDebugger () at 
../../base/debug/debugger_posix.cc:241
#3  0x00005555564f30fe in logging::LogMessage::~LogMessage 
(this=0x7fffffffd6d0) at ../../base/logging.cc:640
#4  0x0000555557e07259 in gin::(anonymous namespace)::MapV8Files 
(natives_path=<optimized out>, snapshot_path=<optimized out>, 
natives_fd=<optimized out>,
     snapshot_fd=<optimized out>, natives_region=..., 
snapshot_region=...) at ../../gin/isolate_holder.cc:89
#5  0x0000555557e06f7d in gin::IsolateHolder::LoadV8Snapshot () at 
../../gin/isolate_holder.cc:160
#6  0x00005555564c124c in content::ContentMainRunnerImpl::Initialize 
(this=0x55555baf8270, params=...) at 
../../content/app/content_main_runner.cc:751
#7  0x00005555564c029a in content::ContentMain (params=...) at 
../../content/app/content_main.cc:15
#8  0x0000555555f2b018 in ChromeMain (argc=3, argv=0x7fffffffdef8) at 
../../chrome/app/chrome_main.cc:66
#9  0x00007ffff0b42b45 in __libc_start_main (main=0x555555f2afc0 
<main(int, char const**)>, argc=3, argv=0x7fffffffdef8, init=<optimized 
out>,
     fini=<optimized out>, rtld_fini=<optimized out>, 
stack_end=0x7fffffffdee8) at libc-start.c:287
#10 0x0000555555f2aebf in _start ()