On 07.03.23 14:05, Lin Ma wrote:
> The commit 6faee3d4ee8b ("igb: Add lock to avoid data race") adds
> rtnl_lock to eliminate a false data race shown below
>
> (FREE from device detaching) | (USE from netdev core)
> igb_remove | igb_ndo_get_vf_config
> igb_disable_sriov | vf >= adapter->vfs_allocated_count?
> kfree(adapter->vf_data) |
> adapter->vfs_allocated_count = 0 |
> | memcpy(... adapter->vf_data[vf]
>
> [...]
> CC: stable@xxxxxxxxxxxxxxx
> Fixes: 6faee3d4ee8b ("igb: Add lock to avoid data race")
> Reported-by: Corinna <vinschen@xxxxxxxxxx>
> Link: https://lore.kernel.org/regressions/3ef31c0b-ce40-20d0-7740-5dc0cca278ca@xxxxxxxxxxxxx/
FWIW, that afaics should be:
Link:
https://lore.kernel.org/intel-wired-lan/ZAcJvkEPqWeJHO2r@xxxxxxxxxxxxxxxxxxxx/
(that's the parent of the mail above)
> Signed-off-by: Lin Ma <linma@xxxxxxxxxx>
Ciao, Thorsten
