strace bug fix update

An strace update that fixes several bugs is now available.

The strace program intercepts and records system calls issued and received
by a running process. Strace can print a record of each system call, its
arguments and its return value.

With this update, strace is now upgraded to version 4.5.18. This applies
several upstream bug fixes and enhancements, including:

* An erroneous file locking instruction caused strace to incorrectly decode
fcntl64() system call parameters in 32-bit programs running on 64-bit
systems. This release corrects the errant file locking instruction,
ensuring that fcntl64() system call parameters are decoded correctly.
(BZ#471169)

* A race condition made it possible for ptrace_do_wait() to prematurely
conclude an exit report of a terminated process before the kill signal
could set the proper exit code. Whenever this occurred, strace could leave
out details of the kill signal in its exit report. This update applies a
workaround that instructs strace to check SIGKILL queues before issuing an
exit report. (BZ#472053)

* When strace was executed with the -f option on a multi-threaded process,
it was possible for some threads in that process to stop. This could
prevent the traced process from terminating. This was caused by a bug that
prevented some threads in a traced multi-threaded process from receiving
ample CPU time. This update provides functions for providing CPU time to
threads in traced multi-threaded processes, along with instructions for
resuming halted threads. (BZ#478419)

Users of strace should apply this update.

Before applying this update, make sure that all previously-released
errata relevant to your system have been applied.

This update is available via Red Hat Network. Details on how to use
the Red Hat Network to apply this update are available at
http://kbase.redhat.com/faq/docs/DOC-11259

471169 - [ biarch ] format fcntl64() system calls for 32 bit application incorrect.

debugging, strace