Re: tip -ENOBOOT - bisected to locking/refcounts, x86/asm: Implement fast refcount overflow protection

[Kees Cook]

On Tue, Aug 29, 2017 at 10:02 PM, Mike Galbraith <efault@xxxxxx> wrote:
> On Tue, 2017-08-29 at 11:41 -0700, Kees Cook wrote:
>> Can you also test with 14afee4b6092 ("net: convert sock.sk_wmem_alloc
>> from atomic_t to refcount_t") reverted (instead of ARCH_HAS_REFCOUNT
>> disabled)?
>
> Nogo.

Thanks for checking!

> [   44.901930] WARNING: CPU: 5 PID: 0 at net/netlink/af_netlink.c:374 netlink_sock_destruct+0x82/0xa0

This is so odd if 14afee4b6092 is reverted. What is line 374 for you
in net/netlink/af_netlink.c?

-Kees

-- 
Kees Cook
Pixel Security