tracing/probes: fix error check in parse_btf_field()
authorCarlos López <clopez@suse.de>
Mon, 27 May 2024 09:43:52 +0000 (11:43 +0200)
committerMasami Hiramatsu (Google) <mhiramat@kernel.org>
Mon, 27 May 2024 12:32:35 +0000 (21:32 +0900)
commite569eb34970281438e2b48a3ef11c87459fcfbcb
tree77dd40ae3cd73360c2fb250b2d3b2984cd11efcf
parent699646734ab51bf5b1cd4a7a30c20074f6e74f6e
tracing/probes: fix error check in parse_btf_field()

btf_find_struct_member() might return NULL or an error via the
ERR_PTR() macro. However, its caller in parse_btf_field() only checks
for the NULL condition. Fix this by using IS_ERR() and returning the
error up the stack.

Link: https://lore.kernel.org/all/20240527094351.15687-1-clopez@suse.de/
Fixes: c440adfbe3025 ("tracing/probes: Support BTF based data structure field access")
Signed-off-by: Carlos López <clopez@suse.de>
Signed-off-by: Masami Hiramatsu (Google) <mhiramat@kernel.org>
kernel/trace/trace_probe.c