Error reporting patches patches for 2023-02-23

[PULL 03/12] dump: Assert cpu_get_note_size() can't fail

Markus Armbruster posted 12 patches 2 years, 11 months ago

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Maintainers: "Daniel P. Berrangé" <berrange@redhat.com>, "Gonglei (Arei)" <arei.gonglei@huawei.com>, Laurent Vivier <lvivier@redhat.com>, Amit Shah <amit@kernel.org>, "Michael S. Tsirkin" <mst@redhat.com>, John Snow <jsnow@redhat.com>, Vladimir Sementsov-Ogievskiy <vsementsov@yandex-team.ru>, Kevin Wolf <kwolf@redhat.com>, Hanna Reitz <hreitz@redhat.com>, "Marc-André Lureau" <marcandre.lureau@redhat.com>, Igor Mammedov <imammedo@redhat.com>, Ani Sinha <ani@anisinha.ca>, Eduardo Habkost <eduardo@habkost.net>, Marcel Apfelbaum <marcel.apfelbaum@gmail.com>, "Philippe Mathieu-Daudé" <philmd@linaro.org>, Yanan Wang <wangyanan55@huawei.com>, Paolo Bonzini <pbonzini@redhat.com>, Richard Henderson <richard.henderson@linaro.org>, Alistair Francis <alistair@alistair23.me>, "Edgar E. Iglesias" <edgar.iglesias@gmail.com>, Peter Maydell <peter.maydell@linaro.org>, Jiri Pirko <jiri@resnulli.us>, Jason Wang <jasowang@redhat.com>, Markus Armbruster <armbru@redhat.com>, Pavel Dovgalyuk <pavel.dovgaluk@ispras.ru>, Hailiang Zhang <zhanghailiang@xfusion.com>, Juan Quintela <quintela@redhat.com>, "Dr. David Alan Gilbert" <dgilbert@redhat.com>, Michael Roth <michael.roth@amd.com>, Konstantin Kostiuk <kkostiuk@redhat.com>, Thomas Huth <thuth@redhat.com>, Marcelo Tosatti <mtosatti@redhat.com>

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[PULL 03/12] dump: Assert cpu_get_note_size() can't fail

Posted by Markus Armbruster 2 years, 11 months ago

The only way cpu_get_note_size() can return a negative value is
integer overflow in the non-stub versions, which is a programming
error.  The stub version is not actually reachable, because the
cpu_get_dump_info() stub will fail first.  Use assert().  This gets
rid of another use of QERR_UNSUPPORTED.

Signed-off-by: Markus Armbruster <armbru@redhat.com>
Message-Id: <20230207075115.1525-4-armbru@redhat.com>
Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Reviewed-by: Juan Quintela <quintela@redhat.com>
---
 dump/dump.c | 5 +----
 1 file changed, 1 insertion(+), 4 deletions(-)

diff --git a/dump/dump.c b/dump/dump.c
index e6833e4cc0..1362810991 100644
--- a/dump/dump.c
+++ b/dump/dump.c
@@ -1865,10 +1865,7 @@ static void dump_init(DumpState *s, int fd, bool has_format,
 
     s->note_size = cpu_get_note_size(s->dump_info.d_class,
                                      s->dump_info.d_machine, nr_cpus);
-    if (s->note_size < 0) {
-        error_setg(errp, QERR_UNSUPPORTED);
-        goto cleanup;
-    }
+    assert(s->note_size >= 0);
 
     /*
      * The goal of this block is to (a) update the previously guessed
-- 
2.39.0