Re: UBSAN: Undefined behaviour in /root/linux-source-4.14/drivers/vhost/vhost.c:LINE

From	Kaipeng Zeng <kaipeng94@gmail.com>
Newsgroups	linux.debian.kernel
Subject	Re: UBSAN: Undefined behaviour in /root/linux-source-4.14/drivers/vhost/vhost.c:LINE
Date	2018-04-03 05:50 +0200
Message-ID	<vAl7j-2m7-1@gated-at.bofh.it> (permalink)
References	<vAkkV-1NL-7@gated-at.bofh.it> <vAkNX-2dD-3@gated-at.bofh.it>
Organization	linux.* mail to news gateway

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On Tue, Apr 3, 2018 at 11:07 AM, Eric Biggers <ebiggers3@gmail.com> wrote:
> On Tue, Apr 03, 2018 at 10:56:37AM +0800, Kaipeng Zeng wrote:
>> Syzkaller hit 'UBSAN: Undefined behaviour in
>> /root/linux-source-4.14/drivers/vhost/vhost.c:LINE' bug.
>> Kernel: debian package linux-source-4.14, build with UBSAN enable
>> Log & repro:
>> Syzkaller hit 'UBSAN: Undefined behaviour in
>> /root/linux-source-4.14/drivers/vhost/vhost.c:LINE' bug.
>> tun: Universal TUN/TAP device driver, 1.6
>> ================================================================================
>> UBSAN: Undefined behaviour in /root/linux-source-4.14/drivers/vhost/vhost.c:52:1
>> member access within null pointer of type 'struct rb_root_cached'
>
> You need to send this to the maintainers of the code (use
> scripts/get_maintainer.pl).  Otherwise no one will pay attention to it.
>
> Eric

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UBSAN: Undefined behaviour in /root/linux-source-4.14/drivers/vhost/vhost.c:LINE Kaipeng Zeng <kaipeng94@gmail.com> - 2018-04-03 05:00 +0200
  Re: UBSAN: Undefined behaviour in  /root/linux-source-4.14/drivers/vhost/vhost.c:LINE Eric Biggers <ebiggers3@gmail.com> - 2018-04-03 05:30 +0200
    Re: UBSAN: Undefined behaviour in /root/linux-source-4.14/drivers/vhost/vhost.c:LINE Kaipeng Zeng <kaipeng94@gmail.com> - 2018-04-03 05:50 +0200

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