From: Jiapeng Chong <jiapeng.chong@linux.alibaba.com> mainline inclusion from mainline-v6.12-rc1 commit 8bb30798fd6ee79e4041a32ca85b9f70345d8671 category: feature bugzilla: https://atomgit.com/openeuler/kernel/issues/8335 Reference: https://web.git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commi... -------------------------------- 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> Signed-off-by: Tejun Heo <tj@kernel.org> Signed-off-by: Zicheng Qu <quzicheng@huawei.com> Signed-off-by: cheliequan <cheliequan@inspur.com> Signed-off-by: Luo Gengkun <luogengkun2@huawei.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 567015775378..9756ca5d414d 100644 --- a/kernel/sched/ext.c +++ b/kernel/sched/ext.c @@ -5066,7 +5066,7 @@ static void bpf_scx_unreg(void *kdata) 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) -- 2.34.1