Messages in this thread Patch in this message | | | From | Wang Qing <> | Subject | [PATCH v3 bpf] trace: bpf: Fix passing zero to PTR_ERR() | Date | Sat, 7 Nov 2020 15:45:44 +0800 |
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There is a bug when passing zero to PTR_ERR() and return. Fix smatch err.
Signed-off-by: Wang Qing <wangqing@vivo.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..5113fd4 --- 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 IS_ERR(*btf) ? PTR_ERR(*btf) : -EINVAL; if (ptr->type_id > 0) *btf_id = ptr->type_id; -- 2.7.4
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