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Message-ID: <CAG_fn=X5a=2vhDR6Lt_6wEUZCmDqhy0dTW62FphATNgpuDbqNg@mail.gmail.com> Date: Fri, 26 Aug 2022 10:38:30 +0200 From: Alexander Potapenko <glider@...gle.com> To: Tetsuo Handa <penguin-kernel@...ove.sakura.ne.jp> Cc: ath9k-devel@....qualcomm.com, phil@...lpotter.co.uk, David Miller <davem@...emloft.net>, Jakub Kicinski <kuba@...nel.org>, Kalle Valo <kvalo@...nel.org>, LKML <linux-kernel@...r.kernel.org>, linux-wireless <linux-wireless@...r.kernel.org>, Networking <netdev@...r.kernel.org>, syzkaller-bugs <syzkaller-bugs@...glegroups.com> Subject: Re: KMSAN: uninit-value in ath9k_htc_rx_msg On Fri, Aug 26, 2022 at 3:35 AM Tetsuo Handa <penguin-kernel@...ove.sakura.ne.jp> wrote: > > On 2022/08/26 0:09, Alexander Potapenko wrote: > > On Thu, Aug 25, 2022 at 4:34 PM Tetsuo Handa > > <penguin-kernel@...ove.sakura.ne.jp> wrote: > >> > >> Hello. > > Hi Tetsuo, > > > >> I found that your patch was applied. But since the reproducer tested only 0 byte > >> case, I think that rejecting only less than sizeof(struct htc_frame_hdr) bytes > >> is not sufficient. > >> > >> More complete patch with Ack from Toke is waiting at > >> https://lkml.kernel.org/r/7acfa1be-4b5c-b2ce-de43-95b0593fb3e5@I-love.SAKURA.ne.jp . > > > > Thanks for letting me know! I just checked that your patch indeed > > fixes the issue I am facing. > > If it is more complete, I think we'd indeed better use yours. > > I recognized that "ath9k: fix an uninit value use in ath9k_htc_rx_msg()" is > local to KMSAN tree. > https://github.com/google/kmsan/commit/d891e35583bf2e81ccc7a2ea548bf7cf47329f40 I actually did a rebase of KMSAN tree to v6.0-rc2 yesterday and dropped that patch (picked yours instead). Thanks for the heads-up! -- Alexander Potapenko Software Engineer Google Germany GmbH Erika-Mann-Straße, 33 80636 München Geschäftsführer: Paul Manicle, Liana Sebastian Registergericht und -nummer: Hamburg, HRB 86891 Sitz der Gesellschaft: Hamburg
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