[PATCH 2/2] kernel/kallsyms: Prevent bypassing of kprobes blacklist

[Elly I. Esparza]

Kprobes can be used to get the adress of kallsyms_lookup_name() providing
access to blacklisted symbols.

Add kallsyms_lookup_name() to kprobes blacklist.

Signed-off-by: Elly I. Esparza <ellyesparza8@xxxxxxxxx>
---
 kernel/kallsyms.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/kernel/kallsyms.c b/kernel/kallsyms.c
index 1e7635864124..13a7c0fdb5da 100644
--- a/kernel/kallsyms.c
+++ b/kernel/kallsyms.c
@@ -234,6 +234,7 @@ unsigned long kallsyms_lookup_name(const char *name)
 
 	return module_kallsyms_lookup_name(name);
 }
+NOKPROBE_SYMBOL(kallsyms_lookup_name)
 
 /*
  * Iterate over all symbols in vmlinux.  For symbols from modules use
-- 
2.43.0