Introduce a generic netlink multicast event to report binder transaction
failures to userspace. This allows subscribers to monitor these events
and take appropriate actions, such as stopping a misbehaving application
that is spamming a service with huge amount of transactions.
The multicast event contains full details of the failed transactions,
including the sender/target PIDs, payload size and specific error code.
This interface is defined using a YAML spec, from which the UAPI and
kernel headers and source are auto-generated.
Signed-off-by: Li Li <dualli@google.com>
Signed-off-by: Carlos Llamas <cmllamas@google.com>
Link: https://lore.kernel.org/r/20250727182932.2499194-4-cmllamas@google.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Bug: 372832477
(cherry picked from commit 63740349eba78f242bcbf60d5244d7f2b2600853
git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/char-misc.git char-misc-next)
[cmllamas: fix missing t->is_reply, fix ABI header include issue]
Change-Id: I7013f9bba450f7ab3331dd850314a7b62af58818
Signed-off-by: Carlos Llamas <cmllamas@google.com>
2e05770b48