netdev - Re: [llc_ui_release] BUG: unable to handle kernel NULL pointer dereference at 0000000000000004

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Message-ID: <CA+55aFzeCvwUw=yi5oDy2ouv7onkXDapgamJJ5AhjybyBH8UCw@mail.gmail.com>
Date:   Sun, 29 Apr 2018 03:30:48 +0000
From:   Linus Torvalds <torvalds@...ux-foundation.org>
To:     Wu Fengguang <fengguang.wu@...el.com>
Cc:     Network Development <netdev@...r.kernel.org>,
        David Miller <davem@...emloft.net>, xiaolou4617@...il.com,
        Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
        LKP <lkp@...org>
Subject: Re: [llc_ui_release] BUG: unable to handle kernel NULL pointer
 dereference at 0000000000000004

On Sat, Apr 28, 2018 at 7:12 PM Fengguang Wu <fengguang.wu@...el.com> wrote:

> FYI this happens in mainline kernel 4.17.0-rc2.
> It looks like a new regression.

> It occurs in 5 out of 5 boots.

> [main] 375 sockets created based on info from socket cachefile.
> [main] Generating file descriptors
> [main] Added 83 filenames from /dev
> udevd[507]: failed to execute '/sbin/modprobe' '/sbin/modprobe -bv
platform:regulatory': No such file or directory
> [  372.057947] caif:caif_disconnect_client(): nothing to disconnect
> [  372.082415] BUG: unable to handle kernel NULL pointer dereference at
0000000000000004

I think this is fixed by commit 3a04ce7130a7 ("llc: fix NULL pointer deref
for SOCK_ZAPPED")

                Liunus