Re: WARNING: locking bug in try_to_grab_pending

[Eric Dumazet]

On 8/14/20 6:17 AM, syzbot wrote:
> syzbot suspects this issue was fixed by commit:
> 
> commit 1378817486d6860f6a927f573491afe65287abf1
> Author: Eric Dumazet <edumazet@xxxxxxxxxx>
> Date:   Thu May 21 18:29:58 2020 +0000
> 
>     tipc: block BH before using dst_cache
> 
> bisection log:  https://syzkaller.appspot.com/x/bisect.txt?x=175599f6900000
> start commit:   6663cf82 flow_offload: Fix flow action infrastructure
> git tree:       net-next
> kernel config:  https://syzkaller.appspot.com/x/.config?x=8572a6e4661225f4
> dashboard link: https://syzkaller.appspot.com/bug?extid=2b713236b28823cd4dff
> syz repro:      https://syzkaller.appspot.com/x/repro.syz?x=13e932a8c00000
> 
> If the result looks correct, please mark the issue as fixed by replying with:
> 
> #syz fix: tipc: block BH before using dst_cache
> 
> For information about bisection process see: https://goo.gl/tpsmEJ#bisection
> 

#syz fix: tipc: block BH before using dst_cache