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signal.c: get rid of heap corruption

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* signal.c (rb_sigaltstack_size): double default size to get rid
  of heap corruption by alternate stack overflow in SEGV handler.
  typically happened at fprintf() in control_frame_dump().

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@47984 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
This commit is contained in:
nobu 2014-10-16 14:17:34 +00:00
parent 0ee11fc6a7
commit b7a0038505
2 changed files with 7 additions and 1 deletions
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6
ChangeLog
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@ -1,3 +1,9 @@
Thu Oct 16 23:17:40 2014 Nobuyoshi Nakada <nobu@ruby-lang.org>
* signal.c (rb_sigaltstack_size): double default size to get rid
of heap corruption by alternate stack overflow in SEGV handler.
typically happened at fprintf() in control_frame_dump().
Thu Oct 16 22:43:12 2014 Tanaka Akira <akr@fsij.org>
* vm_backtrace.c (id2str): Fix a variable name.

2
signal.c
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@ -535,7 +535,7 @@ int
rb_sigaltstack_size(void)
{
/* XXX: BSD_vfprintf() uses >1500KiB stack and x86-64 need >5KiB stack. */
int size = 8192;
int size = 16*1024;
#ifdef MINSIGSTKSZ
if (size < MINSIGSTKSZ)