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Date: Fri, 6 Nov 2020 16:47:32 +0800 From: Wang Qing <wangqing@...o.com> To: Steven Rostedt <rostedt@...dmis.org>, Ingo Molnar <mingo@...hat.com>, Alexei Starovoitov <ast@...nel.org>, Daniel Borkmann <daniel@...earbox.net>, Martin KaFai Lau <kafai@...com>, Song Liu <songliubraving@...com>, Yonghong Song <yhs@...com>, Andrii Nakryiko <andrii@...nel.org>, John Fastabend <john.fastabend@...il.com>, KP Singh <kpsingh@...omium.org>, netdev@...r.kernel.org, bpf@...r.kernel.org, linux-kernel@...r.kernel.org Cc: Wang Qing <wangqing@...o.com> Subject: [PATCH] trace: Fix passing zero to 'PTR_ERR' warning Fix smatch warning. Signed-off-by: Wang Qing <wangqing@...o.com> --- kernel/trace/bpf_trace.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/kernel/trace/bpf_trace.c b/kernel/trace/bpf_trace.c index 4517c8b..2cb9c45 --- a/kernel/trace/bpf_trace.c +++ b/kernel/trace/bpf_trace.c @@ -1198,7 +1198,7 @@ static int bpf_btf_printf_prepare(struct btf_ptr *ptr, u32 btf_ptr_size, *btf = bpf_get_btf_vmlinux(); if (IS_ERR_OR_NULL(*btf)) - return PTR_ERR(*btf); + return PTR_ERR_OR_ZERO(*btf); if (ptr->type_id > 0) *btf_id = ptr->type_id; -- 2.7.4
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