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* [Bug nptl/12404] New: pthread_getattr_np reports wrong value for main thread
@ 2011-01-19 16:42 kumpera at gmail dot com
2011-01-19 16:52 ` [Bug nptl/12404] " drepper.fsp at gmail dot com
` (2 more replies)
0 siblings, 3 replies; 4+ messages in thread
From: kumpera at gmail dot com @ 2011-01-19 16:42 UTC (permalink / raw)
To: glibc-bugs
http://sourceware.org/bugzilla/show_bug.cgi?id=12404
Summary: pthread_getattr_np reports wrong value for main thread
Product: glibc
Version: unspecified
Status: NEW
Severity: normal
Priority: P2
Component: nptl
AssignedTo: drepper.fsp@gmail.com
ReportedBy: kumpera@gmail.com
If an application install a guard page on the main thread by mprotect'ng part
of it, pthread_getattr_np will return an invalid stack_size/stackaddr pair.
Part of the problem with this is that stackaddr + stack_size will point to an
unknown memory address and an application that depends on this information to
inspect the stack will suffer from undefined behavior.
The problem comes from the fact that the information from getrlimit
(RLIMIT_STACK) is not checked against the region found in /proc/self/maps.
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* [Bug nptl/12404] pthread_getattr_np reports wrong value for main thread
2011-01-19 16:42 [Bug nptl/12404] New: pthread_getattr_np reports wrong value for main thread kumpera at gmail dot com
@ 2011-01-19 16:52 ` drepper.fsp at gmail dot com
2011-01-19 17:07 ` kumpera at gmail dot com
2014-06-27 14:03 ` fweimer at redhat dot com
2 siblings, 0 replies; 4+ messages in thread
From: drepper.fsp at gmail dot com @ 2011-01-19 16:52 UTC (permalink / raw)
To: glibc-bugs
http://sourceware.org/bugzilla/show_bug.cgi?id=12404
Ulrich Drepper <drepper.fsp at gmail dot com> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|NEW |WAITING
--- Comment #1 from Ulrich Drepper <drepper.fsp at gmail dot com> 2011-01-19 16:42:01 UTC ---
Where is a test case so that one can actually understand what you're talking
about?
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* [Bug nptl/12404] pthread_getattr_np reports wrong value for main thread
2011-01-19 16:42 [Bug nptl/12404] New: pthread_getattr_np reports wrong value for main thread kumpera at gmail dot com
2011-01-19 16:52 ` [Bug nptl/12404] " drepper.fsp at gmail dot com
@ 2011-01-19 17:07 ` kumpera at gmail dot com
2014-06-27 14:03 ` fweimer at redhat dot com
2 siblings, 0 replies; 4+ messages in thread
From: kumpera at gmail dot com @ 2011-01-19 17:07 UTC (permalink / raw)
To: glibc-bugs
http://sourceware.org/bugzilla/show_bug.cgi?id=12404
Rodrigo Kumpera <kumpera at gmail dot com> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|WAITING |RESOLVED
Resolution| |INVALID
--- Comment #2 from Rodrigo Kumpera <kumpera at gmail dot com> 2011-01-19 16:51:59 UTC ---
It turned out the problem is actually on other part of glibc. Sorry for the
inconvenience.
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* [Bug nptl/12404] pthread_getattr_np reports wrong value for main thread
2011-01-19 16:42 [Bug nptl/12404] New: pthread_getattr_np reports wrong value for main thread kumpera at gmail dot com
2011-01-19 16:52 ` [Bug nptl/12404] " drepper.fsp at gmail dot com
2011-01-19 17:07 ` kumpera at gmail dot com
@ 2014-06-27 14:03 ` fweimer at redhat dot com
2 siblings, 0 replies; 4+ messages in thread
From: fweimer at redhat dot com @ 2014-06-27 14:03 UTC (permalink / raw)
To: glibc-bugs
https://sourceware.org/bugzilla/show_bug.cgi?id=12404
Florian Weimer <fweimer at redhat dot com> changed:
What |Removed |Added
----------------------------------------------------------------------------
Flags| |security-
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end of thread, other threads:[~2014-06-27 14:03 UTC | newest]
Thread overview: 4+ messages (download: mbox.gz / follow: Atom feed)
-- links below jump to the message on this page --
2011-01-19 16:42 [Bug nptl/12404] New: pthread_getattr_np reports wrong value for main thread kumpera at gmail dot com
2011-01-19 16:52 ` [Bug nptl/12404] " drepper.fsp at gmail dot com
2011-01-19 17:07 ` kumpera at gmail dot com
2014-06-27 14:03 ` fweimer at redhat dot com
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