can: proc: remove pointers from CAN specific proc output

The proc content in /proc/net/can/ and /proc/net/can-bcm/ is intended to
check the internal filter lists (af_can, can_raw) and the efficiency and
functionality of can_bcm jobs. While exposing kernel addresses was
acceptable when this code was written the times have changed and multiple
attempts have been made to hash or remove such now sensitive data.

This patch removes the disclosure of pointers and instead provides the
function names and sock inode numbers when available. When the function
name can not be resolved (e.g. KALLSYMS=n or stripped module symbols)
%ps would fall back to the raw text address. Therefore (unknown) is
printed instead in this case. As there's no known tooling around the CAN
specific proc output breaking the ABI with this rework creates no issue.

Suggested-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
Signed-off-by: Oliver Hartkopp <socketcan@hartkopp.net>
Link: https://patch.msgid.link/20261027-can-rx-lock-v12-7-eb5afc2d8b9b@hartkopp.net
Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>

0 files changed, 0 insertions, 0 deletions