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Date: Fri, 2 Apr 2021 19:10:08 +0100 From: Phillip Potter <phil@...lpotter.co.uk> To: Eric Dumazet <eric.dumazet@...il.com> Cc: davem@...emloft.net, yoshfuji@...ux-ipv6.org, dsahern@...nel.org, kuba@...nel.org, netdev@...r.kernel.org, linux-kernel@...r.kernel.org Subject: Re: [PATCH] net: initialize local variables in net/ipv6/mcast.c and net/ipv4/igmp.c On Fri, Apr 02, 2021 at 07:49:44PM +0200, Eric Dumazet wrote: > > > On 4/2/21 7:36 PM, Phillip Potter wrote: > > Use memset to initialize two local buffers in net/ipv6/mcast.c, > > and another in net/ipv4/igmp.c. Fixes a KMSAN found uninit-value > > bug reported by syzbot at: > > https://syzkaller.appspot.com/bug?id=0766d38c656abeace60621896d705743aeefed51 > > > According to this link, the bug no longer triggers. > > Please explain why you think it is still there. > Dear Eric, It definitely still triggers, tested it on the master branch of https://github.com/google/kmsan last night. The patch which fixes the crash on that page is the same patch I've sent in. Regards, Phil
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