Re: [PATCH] sg, bsg: mitigate read/write abuse, block uaccess in release

[Christoph Hellwig]

On Thu, Jun 21, 2018 at 02:51:16PM +0200, Jann Horn wrote:
> In the package https://packages.debian.org/stretch/tgt:
>   https://sources.debian.org/src/tgt/1:1.0.73-1/usr/bs_sg.c/?hl=131#L131
>   https://sources.debian.org/src/tgt/1:1.0.73-1/usr/bs_sg.c/?hl=236#L236

This is for real, although it is an optional case in an optional plug
in, so I'm not sure if any one actually uses bsg read/write with it
for real.

The usual aspects added. (the question is if bsg read/write support
is actually used in real life or can be removed)

> In the package https://packages.debian.org/stretch/sg3-utils:
>   https://sources.debian.org/src/sg3-utils/1.42-2/examples/bsg_queue_tst.c/?hl=60#L60

This is just example code.