1berry/ruby
1
0
Fork 0
Code Issues Packages Projects Releases Wiki Activity

thread_pthread: do not corrupt stack

Browse Source 
This fixes stuck test/ruby/test_io.rb with FIBER_USE_NATIVE=0 on
GNU/Linux because linked-list pointers used by glibc get
corrupted when fiber stacks are copied.

Thanks to wanabe for finding the bug and original patch.

* thread_pthread (native_thread_init_stack): fix stack corruption
  [ruby-core:82737] [Bug #13387]

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@60384 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
This commit is contained in:
normal 2017-10-23 21:50:08 +00:00
parent 30d23ec903
commit 73c397acb5
1 changed files with 3 additions and 2 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

5
thread_pthread.c
View File

@ -836,8 +836,9 @@ native_thread_init_stack(rb_thread_t *th)
size_t size;
if (get_stack(&start, &size) == 0) {
th->ec.machine.stack_start = start;
th->ec.machine.stack_maxsize = size;
uintptr_t diff = (uintptr_t)start - (uintptr_t)&curr;
th->ec.machine.stack_start = (VALUE *)&curr;
th->ec.machine.stack_maxsize = size - diff;
}
#elif defined get_stack_of
if (!th->ec.machine.stack_maxsize) {