Thread (9 messages) 9 messages, 4 authors, 2024-09-03

Re: [PATCH net] ice: Fix NULL pointer access, if PF doesn't support SRIOV_LAG

From: Przemek Kitszel <przemyslaw.kitszel@intel.com>
Date: 2024-08-27 07:17:01
Also in: intel-wired-lan, lkml

On 8/26/24 12:17, Thomas Bogendoerfer wrote:
On Mon, 26 Aug 2024 11:41:19 +0200
Jiri Pirko [off-list ref] wrote:
quoted
Mon, Aug 26, 2024 at 10:58:30AM CEST, tbogendoerfer@suse.de wrote:
quoted
For PFs, which don't support SRIOV_LAG, there is no pf->lag struct
allocated. So before accessing pf->lag a NULL pointer check is needed.

Signed-off-by: Thomas Bogendoerfer <redacted>
You need to add a "fixes" tag blaming the commit that introduced the
bug.
Would be also good to CC the author.
of course...

Fixes: 1e0f9881ef79 ("ice: Flesh out implementation of support for SRIOV on
bonded interface")
the bug was introduced later, the tag should be:
Fixes: ec5a6c5f79ed ("ice: process events created by lag netdev event 
handler")

The mentioned commit extracted code into ice_lag_move_new_vf_nodes(),
and there is just one call to this function by now, just after
releasing lag_mutex, so would be good to change the semantics of
ice_lag_move_new_vf_nodes() to "only for lag-enabled flows, with
lag_mutex held", and fix the call to it to reflect that.
Should I resend the patch ?
sometimes that is not strictly needed, but after two possible tags
mentioned that's the best way :)
Thomas.
  
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