[PATCH 08/16] objtool: Fix SEGFAULT
Sathvika Vasireddy
sv at linux.ibm.com
Mon Aug 8 21:49:00 AEST 2022
From: Christophe Leroy <christophe.leroy at csgroup.eu>
find_insn() will return NULL in case of failure. Check insn in order
to avoid a kernel Oops for NULL pointer dereference.
Signed-off-by: Christophe Leroy <christophe.leroy at csgroup.eu>
---
tools/objtool/check.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/tools/objtool/check.c b/tools/objtool/check.c
index 0cec74da7ffe..0ef805843d4f 100644
--- a/tools/objtool/check.c
+++ b/tools/objtool/check.c
@@ -205,7 +205,7 @@ static bool __dead_end_function(struct objtool_file *file, struct symbol *func,
return false;
insn = find_insn(file, func->sec, func->offset);
- if (!insn->func)
+ if (!insn || !insn->func)
return false;
func_for_each_insn(file, func, insn) {
--
2.31.1
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