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(parent: 667fad5) | patch
bpf: Fix passing zero to PTR_ERR() in bpf_btf_printf_prepare
authorWang Qing <wangqing@vivo.com>
Sat, 7 Nov 2020 07:45:44 +0000 (15:45 +0800)
committerDaniel Borkmann <daniel@iogearbox.net>
Mon, 9 Nov 2020 21:37:19 +0000 (22:37 +0100)
commitbac72ba1589fda09a51006cfd5179672ddc4cb7a
treee26c7b6aefb6fd4ef8131871b689c0372d023734tree | snapshot
parent667fad517816798a98666136a18f0db5732e58a0commit | diff
bpf: Fix passing zero to PTR_ERR() in bpf_btf_printf_prepare

There is a bug when passing zero to PTR_ERR() and return.
Fix the smatch error.

Fixes: 8bbf05aad7c7 ("bpf: Add bpf_snprintf_btf helper")
Signed-off-by: Wang Qing <wangqing@vivo.com>
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
Acked-by: Yonghong Song <yhs@fb.com>
Acked-by: John Fastabend <john.fastabend@gmail.com>
Link: https://lore.kernel.org/bpf/1604735144-686-1-git-send-email-wangqing@vivo.com
kernel/trace/bpf_trace.c diff | blob | history
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