linux-kernel - [PATCH bpf-next 1/2] fprobe: Fix smatch type mismatch warning

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Message-Id: <164802092611.1732982.12268174743437084619.stgit@devnote2>
Date:   Wed, 23 Mar 2022 16:35:26 +0900
From:   Masami Hiramatsu <mhiramat@...nel.org>
To:     Alexei Starovoitov <ast@...nel.org>,
        Andrii Nakryiko <andrii.nakryiko@...il.com>
Cc:     Dan Carpenter <dan.carpenter@...cle.com>,
        kernel-janitors@...r.kernel.org,
        Steven Rostedt <rostedt@...dmis.org>,
        Masami Hiramatsu <mhiramat@...nel.org>,
        Jiri Olsa <jolsa@...nel.org>, bpf@...r.kernel.org,
        linux-kernel@...r.kernel.org
Subject: [PATCH bpf-next 1/2] fprobe: Fix smatch type mismatch warning

Fix the type mismatching warning of 'rethook_node vs fprobe_rethook_node'
found by Smatch.

Reported-by: Dan Carpenter <dan.carpenter@...cle.com>
Signed-off-by: Masami Hiramatsu <mhiramat@...nel.org>
---
 kernel/trace/fprobe.c |    6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

diff --git a/kernel/trace/fprobe.c b/kernel/trace/fprobe.c
index 8b2dd5b9dcd1..63b2321b22a0 100644
--- a/kernel/trace/fprobe.c
+++ b/kernel/trace/fprobe.c
@@ -150,15 +150,15 @@ static int fprobe_init_rethook(struct fprobe *fp, int num)
 
 	fp->rethook = rethook_alloc((void *)fp, fprobe_exit_handler);
 	for (i = 0; i < size; i++) {
-		struct rethook_node *node;
+		struct fprobe_rethook_node *node;
 
-		node = kzalloc(sizeof(struct fprobe_rethook_node), GFP_KERNEL);
+		node = kzalloc(sizeof(*node), GFP_KERNEL);
 		if (!node) {
 			rethook_free(fp->rethook);
 			fp->rethook = NULL;
 			return -ENOMEM;
 		}
-		rethook_add_node(fp->rethook, node);
+		rethook_add_node(fp->rethook, &node->node);
 	}
 	return 0;
 }