On Mon, 15 Aug 2022 14:28:58 +0200 Daniel Borkmann wrote: > [ +Hawkins ] > > On 8/15/22 12:59 PM, syzbot wrote: > > Hello, > > > > syzbot found the following issue on: > > > > HEAD commit: 94ce3b64c62d net/tls: Use RCU API to access tls_ctx->netdev > > git tree: net > > console+strace: https://syzkaller.appspot.com/x/log.txt?x=14641e15080000 > > kernel config: https://syzkaller.appspot.com/x/.config?x=53da55f2bdeb0d4c > > dashboard link: https://syzkaller.appspot.com/bug?extid=24bcff6e82ce253f23ec > > compiler: gcc (Debian 10.2.1-6) 10.2.1 20210110, GNU ld (GNU Binutils for Debian) 2.35.2 > > syz repro: https://syzkaller.appspot.com/x/repro.syz?x=106c89fd080000 > > C reproducer: https://syzkaller.appspot.com/x/repro.c?x=17ead885080000 > > > > The issue was bisected to: > > > > commit f72c38fad234759fe943cb2e40bf3d0f7de1d4d9 > > Author: Edward Cree <ecree.xilinx@xxxxxxxxx> > > Date: Wed Jul 20 18:33:48 2022 +0000 > > > > sfc: hook up ef100 representor TX > > Looks rather related to: > > commit 2a0133723f9ebeb751cfce19f74ec07e108bef1f > Author: Hawkins Jiawei <yin31149@xxxxxxxxx> > Date: Fri Aug 5 15:48:34 2022 +0800 > > net: fix refcount bug in sk_psock_get (2) Indeed, looks like the reuseport clearing needs to be some approximation of rcu_dereference_protected().
