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Commit 0aa35162 authored by Yafang Shao's avatar Yafang Shao Committed by Daniel Borkmann
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bpf: Fix uninitialized symbol in bpf_perf_link_fill_kprobe()



The commit 1b715e1b ("bpf: Support ->fill_link_info for perf_event") leads
to the following Smatch static checker warning:

    kernel/bpf/syscall.c:3416 bpf_perf_link_fill_kprobe()
    error: uninitialized symbol 'type'.

That can happens when uname is NULL. So fix it by verifying the uname when we
really need to fill it.

Fixes: 1b715e1b ("bpf: Support ->fill_link_info for perf_event")
Reported-by: default avatarDan Carpenter <dan.carpenter@linaro.org>
Signed-off-by: default avatarYafang Shao <laoar.shao@gmail.com>
Signed-off-by: default avatarDaniel Borkmann <daniel@iogearbox.net>
Acked-by: default avatarYonghong Song <yonghong.song@linux.dev>
Acked-by: default avatarJiri Olsa <jolsa@kernel.org>
Closes: https://lore.kernel.org/bpf/85697a7e-f897-4f74-8b43-82721bebc462@kili.mountain
Link: https://lore.kernel.org/bpf/20230813141900.1268-2-laoar.shao@gmail.com
parent 8897562f
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