The test-iov code uses usleep() with small values (<= 30) in some
nested loops with many iterations. This causes a small delay on OSes
like Linux that have a precise sleeping mechanism, but on systems
like NetBSD and OpenBSD, each usleep() call takes multiple microseconds,
which then sum up in a total test time of multiple minutes!
Looking at the code, the usleep() does not really seem to be necessary
here - if not enough data could be send, we should simply always use
select() to wait 'til we can send more. Thus remove the usleep() and
re-arrange the code a little bit to make it more clear what is going
on here.
Suggested-by: "Daniel P. Berrangé" <berrange@redhat.com>
Message-ID: <20240122153347.71654-1-thuth@redhat.com>
Reviewed-by: "Daniel P. Berrangé" <berrange@redhat.com>
Signed-off-by: Thomas Huth <thuth@redhat.com>
Per https://discourse.gnome.org/t/port-your-module-from-g-memdup-to-g-memdup2-now/5538
The old API took the size of the memory to duplicate as a guint,
whereas most memory functions take memory sizes as a gsize. This
made it easy to accidentally pass a gsize to g_memdup(). For large
values, that would lead to a silent truncation of the size from 64
to 32 bits, and result in a heap area being returned which is
significantly smaller than what the caller expects. This can likely
be exploited in various modules to cause a heap buffer overflow.
Replace g_memdup() by the safer g_memdup2() wrapper.
Signed-off-by: Philippe Mathieu-Daudé <philmd@redhat.com>
Message-Id: <20210903174510.751630-24-philmd@redhat.com>
Signed-off-by: Thomas Huth <thuth@redhat.com>
Suggested-by: Daniel P. Berrangé <berrange@redhat.com>
Signed-off-by: Marc-André Lureau <marcandre.lureau@redhat.com>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
From clang-13:
tests/unit/test-iov.c:161:26: error: variable 't' set but not used \
[-Werror,-Wunused-but-set-variable]
Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
The main tests directory still looks very crowded, and it's not
clear which files are part of a unit tests and which belong to
a different test subsystem. Let's clean up the mess and move the
unit tests to a separate directory.
Message-Id: <20210310063314.1049838-1-thuth@redhat.com>
Acked-by: Paolo Bonzini <pbonzini@redhat.com>
Signed-off-by: Thomas Huth <thuth@redhat.com>
