From: Jiapeng Chong <jiapeng.chong@linux.alibaba.com>
To: tj@kernel.org
Cc: void@manifault.com, mingo@redhat.com, peterz@infradead.org,
juri.lelli@redhat.com, vincent.guittot@linaro.org,
dietmar.eggemann@arm.com, rostedt@goodmis.org,
bsegall@google.com, mgorman@suse.de, vschneid@redhat.com,
linux-kernel@vger.kernel.org,
Jiapeng Chong <jiapeng.chong@linux.alibaba.com>,
Abaci Robot <abaci@linux.alibaba.com>
Subject: [PATCH -next] sched_ext: Fixes incorrect type in bpf_scx_init()
Date: Mon, 15 Jul 2024 10:10:26 +0800 [thread overview]
Message-ID: <20240715021027.77700-1-jiapeng.chong@linux.alibaba.com> (raw)
The type_id is defined as u32type, if(type_id<0) is invalid, hence
modified its type to s32.
./kernel/sched/ext.c:4958:5-12: WARNING: Unsigned expression compared with zero: type_id < 0.
Reported-by: Abaci Robot <abaci@linux.alibaba.com>
Closes: https://bugzilla.openanolis.cn/show_bug.cgi?id=9523
Signed-off-by: Jiapeng Chong <jiapeng.chong@linux.alibaba.com>
---
kernel/sched/ext.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/kernel/sched/ext.c b/kernel/sched/ext.c
index f4a7abcec793..7ddeaa43b63d 100644
--- a/kernel/sched/ext.c
+++ b/kernel/sched/ext.c
@@ -4952,7 +4952,7 @@ static void bpf_scx_unreg(void *kdata, struct bpf_link *link)
static int bpf_scx_init(struct btf *btf)
{
- u32 type_id;
+ s32 type_id;
type_id = btf_find_by_name_kind(btf, "task_struct", BTF_KIND_STRUCT);
if (type_id < 0)
--
2.20.1.7.g153144c
next reply other threads:[~2024-07-15 2:10 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2024-07-15 2:10 Jiapeng Chong [this message]
2024-07-15 4:43 ` Tejun Heo
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