netdev - Re: [patch net-next] net: sched: move block device tracking into tcf_block_get/put

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Message-ID: <b0a7aa1c-9767-412e-8f79-8a703a9a05b5@mojatatu.com>
Date: Thu, 4 Jan 2024 16:26:55 -0300
From: Victor Nogueira <victor@...atatu.com>
To: Jiri Pirko <jiri@...nulli.us>, netdev@...r.kernel.org
Cc: kuba@...nel.org, pabeni@...hat.com, davem@...emloft.net,
 edumazet@...gle.com, jhs@...atatu.com, xiyou.wangcong@...il.com,
 pctammela@...atatu.com, idosch@...sch.org, mleitner@...hat.com,
 vladbu@...dia.com, paulb@...dia.com
Subject: Re: [patch net-next] net: sched: move block device tracking into
 tcf_block_get/put_ext()

On 04/01/2024 09:58, Jiri Pirko wrote:
> From: Jiri Pirko <jiri@...dia.com>
> 
> Inserting the device to block xarray in qdisc_create() is not suitable
> place to do this. As it requires use of tcf_block() callback, it causes
> multiple issues. It is called for all qdisc types, which is incorrect.
> 
> So, instead, move it to more suitable place, which is tcf_block_get_ext()
> and make sure it is only done for qdiscs that use block infrastructure
> and also only for blocks which are shared.
> 
> Symmetrically, alter the cleanup path, move the xarray entry removal
> into tcf_block_put_ext().
> 
> Fixes: 913b47d3424e ("net/sched: Introduce tc block netdev tracking infra")
> Reported-by: Ido Schimmel <idosch@...dia.com>
> Closes: https://lore.kernel.org/all/ZY1hBb8GFwycfgvd@shredder/
> Reported-by: Kui-Feng Lee <sinquersw@...il.com>
> Closes: https://lore.kernel.org/all/ce8d3e55-b8bc-409c-ace9-5cf1c4f7c88e@gmail.com/
> Reported-and-tested-by: syzbot+84339b9e7330daae4d66@...kaller.appspotmail.com
> Closes: https://lore.kernel.org/all/0000000000007c85f5060dcc3a28@google.com/
> Reported-and-tested-by: syzbot+806b0572c8d06b66b234@...kaller.appspotmail.com
> Closes: https://lore.kernel.org/all/00000000000082f2f2060dcc3a92@google.com/
> Reported-and-tested-by: syzbot+0039110f932d438130f9@...kaller.appspotmail.com
> Closes: https://lore.kernel.org/all/0000000000007fbc8c060dcc3a5c@google.com/
> Signed-off-by: Jiri Pirko <jiri@...dia.com>

Reviewed-by: Victor Nogueira <victor@...atatu.com>
Tested-by: Victor Nogueira <victor@...atatu.com>