linux/net/ax25
Joel Granados 78a7b5dbc0 ax.25: x.25: Remove the now superfluous sentinel elements from ctl_table array
This commit comes at the tail end of a greater effort to remove the
empty elements at the end of the ctl_table arrays (sentinels) which will
reduce the overall build time size of the kernel and run time memory
bloat by ~64 bytes per sentinel (further information Link :
https://lore.kernel.org/all/ZO5Yx5JFogGi%2FcBo@bombadil.infradead.org/)

Avoid a buffer overflow when traversing the ctl_table by ensuring that
AX25_MAX_VALUES is the same as the size of ax25_param_table. This is
done with a BUILD_BUG_ON where ax25_param_table is defined and a
CONFIG_AX25_DAMA_SLAVE guard in the unnamed enum definition as well as
in the ax25_dev_device_up and ax25_ds_set_timer functions.

The overflow happened when the sentinel was removed from
ax25_param_table. The sentinel's data element was changed when
CONFIG_AX25_DAMA_SLAVE was undefined. This had no adverse effects as it
still stopped on the sentinel's null procname but needed to be addressed
once the sentinel was removed.

Signed-off-by: Joel Granados <j.granados@samsung.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2024-05-03 13:29:43 +01:00
..
af_ax25.c ax25: Fix netdev refcount issue 2024-04-23 11:35:52 +02:00
ax25_addr.c
ax25_dev.c ax.25: x.25: Remove the now superfluous sentinel elements from ctl_table array 2024-05-03 13:29:43 +01:00
ax25_ds_in.c
ax25_ds_subr.c
ax25_ds_timer.c ax.25: x.25: Remove the now superfluous sentinel elements from ctl_table array 2024-05-03 13:29:43 +01:00
ax25_iface.c
ax25_in.c
ax25_ip.c
ax25_out.c
ax25_route.c
ax25_std_in.c
ax25_std_subr.c
ax25_std_timer.c
ax25_subr.c
ax25_timer.c
ax25_uid.c
Kconfig
Makefile
sysctl_net_ax25.c ax.25: x.25: Remove the now superfluous sentinel elements from ctl_table array 2024-05-03 13:29:43 +01:00