Messages in this thread Patch in this message | | | From | Miroslav Benes <> | Subject | [PATCH 3/3] livepatch: Use FTRACE_OPS_FL_PERMANENT | Date | Mon, 7 Oct 2019 10:17:14 +0200 |
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Use FTRACE_OPS_FL_PERMANENT flag to be immune to toggling the 'ftrace_enabled' sysctl knob.
Signed-off-by: Miroslav Benes <mbenes@suse.cz> --- kernel/livepatch/patch.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-)
diff --git a/kernel/livepatch/patch.c b/kernel/livepatch/patch.c index bd43537702bd..b552cf2d85f8 100644 --- a/kernel/livepatch/patch.c +++ b/kernel/livepatch/patch.c @@ -196,7 +196,8 @@ static int klp_patch_func(struct klp_func *func) ops->fops.func = klp_ftrace_handler; ops->fops.flags = FTRACE_OPS_FL_SAVE_REGS | FTRACE_OPS_FL_DYNAMIC | - FTRACE_OPS_FL_IPMODIFY; + FTRACE_OPS_FL_IPMODIFY | + FTRACE_OPS_FL_PERMANENT; list_add(&ops->node, &klp_ops); -- 2.23.0
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