linux/tools/objtool/Documentation/objtool.txt, branch v6.3Mirror of https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/
https://git.shady.money/linux/atom?h=v6.32023-01-21T09:50:18Zobjtool: Check that module init/exit function is an indirect call target2023-01-21T09:50:18ZMichal Kubecekmkubecek@suse.cz2023-01-18T10:52:15Zurn:sha1:03d7a1053cf72372be22b43faada5bca12ff183d
Some out-of-tree modules still do not use module_init() / module_exit()
macros and simply create functions with magic names init_module() and
cleanup_module() instead. As a result, these functions are not recognized
as indirect call targets by objtool and such module fails to load into an
IBT enabled kernel.
This old way is not even documented any more but it is cleaner to issue
a warning than to let the module fail on load without obvious reason.
Signed-off-by: Michal Kubecek <mkubecek@suse.cz>
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Link: https://lkml.kernel.org/r/20230118105215.B9DA960514@lion.mk-sys.cz
objtool: Update documentation2022-04-22T10:32:05ZJosh Poimboeufjpoimboe@redhat.com2022-04-18T16:50:44Zurn:sha1:a8e35fece49b16b20de000aab687ca075e4463af
The objtool documentation is very stack validation centric. Broaden the
documentation and describe all the features objtool supports.
Signed-off-by: Josh Poimboeuf <jpoimboe@redhat.com>
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Reviewed-by: Miroslav Benes <mbenes@suse.cz>
Link: https://lkml.kernel.org/r/b6a84d301d9f73ec6725752654097f4e31fa1b69.1650300597.git.jpoimboe@redhat.com