Re: if_get NULL race arp, nd6, igmp

2022-03-26 Thread Denis Fondras
Le Tue, Mar 22, 2022 at 02:57:31PM +0100, Alexander Bluhm a écrit : > anyone? > It looks OK denis@ > On Fri, Mar 04, 2022 at 12:09:03PM +0100, Alexander Bluhm wrote: > > Hi, > > > > syzkaller has found this race in arp. > > > >

Re: if_get NULL race arp, nd6, igmp

2022-03-22 Thread Alexander Bluhm
anyone? On Fri, Mar 04, 2022 at 12:09:03PM +0100, Alexander Bluhm wrote: > Hi, > > syzkaller has found this race in arp. > > https://syzkaller.appspot.com/bug?id=e3dc94533ddee95b6d69c2e7049360022f4190d3 > > The assumption of the code is that either the arp entry or the > interface is removed.

if_get NULL race arp, nd6, igmp

2022-03-04 Thread Alexander Bluhm
Hi, syzkaller has found this race in arp. https://syzkaller.appspot.com/bug?id=e3dc94533ddee95b6d69c2e7049360022f4190d3 The assumption of the code is that either the arp entry or the interface is removed. But in if_detach() if_remove() is called without net lock and all arp entries are removed