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Re: [Qemu-devel] [BUG] 216 Alerts reported by LGTM for QEMU (some might

From: Paolo Bonzini
Subject: Re: [Qemu-devel] [BUG] 216 Alerts reported by LGTM for QEMU (some might be release critical)
Date: Sat, 13 Jul 2019 21:42:03 +0200
User-agent: Mozilla/5.0 (X11; Linux x86_64; rv:60.0) Gecko/20100101 Thunderbird/60.7.2

On 13/07/19 19:46, Stefan Weil wrote:
> LGTM reports 16 errors, 81 warnings and 119 recommendations:
> https://lgtm.com/projects/g/qemu/qemu/alerts/?mode=list.
> Some of them are already know (wrong format strings), others look like
> real errors:
> - several multiplication results which don't work as they should in
> contrib/vhost-user-gpu, block/* (m->nb_clusters * s->cluster_size only
> 32 bit!),  target/i386/translate.c and other files

m->nb_clusters here is limited by s->l2_slice_size (see for example
handle_alloc) so I wouldn't be surprised if this is a false positive.  I
couldn't find this particular multiplication in Coverity, but it has
about 250 issues marked as intentional or false positive so there's
probably a lot of overlap with what LGTM found.


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