Messages in this thread | | | Date | Fri, 4 Sep 2020 09:37:53 -0500 | From | "Gustavo A. R. Silva" <> | Subject | Re: [PATCH v2] KVM: fix memory leak in kvm_io_bus_unregister_dev() |
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On Fri, Sep 04, 2020 at 02:04:23PM +0200, Vitaly Kuznetsov wrote: > Rustam Kovhaev <rkovhaev@gmail.com> writes: > > > On Wed, Sep 02, 2020 at 06:34:11PM -0500, Gustavo A. R. Silva wrote: > >> Hi, > >> > >> On 9/2/20 17:57, Rustam Kovhaev wrote: > >> > when kmalloc() fails in kvm_io_bus_unregister_dev(), before removing > >> > the bus, we should iterate over all other devices linked to it and call > >> > kvm_iodevice_destructor() for them > >> > > >> > Reported-and-tested-by: syzbot+f196caa45793d6374707@syzkaller.appspotmail.com > >> > Link: https://syzkaller.appspot.com/bug?extid=f196caa45793d6374707 > >> > Signed-off-by: Rustam Kovhaev <rkovhaev@gmail.com> > >> > Reviewed-by: Vitaly Kuznetsov <vkuznets@redhat.com> > >> > >> I think it's worthwhile to add a Fixes tag for this, too. > >> > >> Please, see more comments below... [..] > > > > hi Gustavo, thank you for the review, i'll send the new patch. > > Vitaly, i think i will need to drop your "Reviewed-by", because there is > > going to be a bit more changes > > > > Personally, I'd prefer to make struct_size()/flex_array_size() a > separate preparatory patch so the real fix is small but I don't have a > strong opinion. I'll take look at v3 so feel free to drop R-b if you > decide to make a combined patch and feel free to keep it if you make the > preparatory changes separate :-) >
I agree. A two-patch series is much better in this case.
Rustam - please add a Fixes tag to the first patch and see if it can be applied to -stable. If so, you should Cc stable@vger.kernel.org, too.
Thanks -- Gustavo
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