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| author | Steven Rostedt (VMware) <rostedt@goodmis.org> | 2020-11-06 03:32:42 +0100 |
|---|---|---|
| committer | Steven Rostedt (VMware) <rostedt@goodmis.org> | 2020-11-06 14:41:47 +0100 |
| commit | 4b750b573c5b3ee10e33c1573eaa94a9dad62f19 (patch) | |
| tree | b889901b1bb61cacd0d4503881412ebfc834bae8 /tools | |
| parent | livepatch/ftrace: Add recursion protection to the ftrace callback (diff) | |
| download | linux-4b750b573c5b3ee10e33c1573eaa94a9dad62f19.tar.xz linux-4b750b573c5b3ee10e33c1573eaa94a9dad62f19.zip | |
livepatch: Trigger WARNING if livepatch function fails due to recursion
If for some reason a function is called that triggers the recursion
detection of live patching, trigger a warning. By not executing the live
patch code, it is possible that the old unpatched function will be called
placing the system into an unknown state.
Link: https://lore.kernel.org/r/20201029145709.GD16774@alley
Link: https://lkml.kernel.org/r/20201106023547.312639435@goodmis.org
Cc: Masami Hiramatsu <mhiramat@kernel.org>
Cc: Andrew Morton <akpm@linux-foundation.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Ingo Molnar <mingo@kernel.org>
Cc: Josh Poimboeuf <jpoimboe@redhat.com>
Cc: Jiri Kosina <jikos@kernel.org>
Cc: Joe Lawrence <joe.lawrence@redhat.com>
Cc: live-patching@vger.kernel.org
Suggested-by: Miroslav Benes <mbenes@suse.cz>
Reviewed-by: Petr Mladek <pmladek@suse.com>
Acked-by: Miroslav Benes <mbenes@suse.cz>
Signed-off-by: Steven Rostedt (VMware) <rostedt@goodmis.org>
Diffstat (limited to 'tools')
0 files changed, 0 insertions, 0 deletions