[DragonFlyBSD - Bug #1442] blocking SIGSEGV and triggering a segment violation produces an all CPU consuming process

bugtracker-admin at leaf.dragonflybsd.org bugtracker-admin at leaf.dragonflybsd.org
Thu Feb 20 07:48:20 PST 2014


Issue #1442 has been updated by tuxillo.

Description updated
Category set to Other
Assignee changed from 0 to tuxillo
Target version set to 3.8.0

Grab.

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Bug #1442: blocking SIGSEGV and triggering a segment violation produces an all CPU consuming process
http://bugs.dragonflybsd.org/issues/1442#change-11808

* Author: corecode
* Status: New
* Priority: Normal
* Assignee: tuxillo
* Category: Other
* Target version: 3.8.0
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If a process blocks (or ignores?) SIGSEGV (or SIGFPE, SIGILL, SIGBUS, etc.) and
then triggers the associated signal without having a handler installed, the
process/thread will be stuck on the triggering instruction without any hope.

I think the kernel should detect such a situation (i.e. trap leading to
blocked/ignored signal without handler) and should kill the process.



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