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

From Eric Biggers <ebiggers3@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 05:30 +0200
Message-ID <vAkNX-2dD-3@gated-at.bofh.it> (permalink)
References <vAkkV-1NL-7@gated-at.bofh.it>
Organization linux.* mail to news gateway

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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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Thread

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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