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tracing: Fix logged instance name on creation failure

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When boot instance creation fails, the kernel incorrectly logs "(null)"
as the instance name because strsep() consumes curr_str entirely during
parsing.

Print the properly parsed name variable instead. And while at it log
the error code.

Cc: stable@vger.kernel.org
Link: https://patch.msgid.link/20260807085423.4175161-1-vdonnefort@google.com
Fixes: cb1f98c5e5 ("tracing: Add creation of instances at boot command line")
Acked-by: Masami Hiramatsu (Google) <mhiramat@kernel.org>
Signed-off-by: Vincent Donnefort <vdonnefort@google.com>
Signed-off-by: Steven Rostedt <rostedt@goodmis.org>
This commit is contained in:
Vincent Donnefort 2026-08-07 09:54:23 +01:00 committed by Steven Rostedt
parent cb8a75eec0
commit a9a01be283
1 changed files with 2 additions and 1 deletions
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3
kernel/trace/trace.c
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@ -9726,7 +9726,8 @@ __init static void enable_instances(void)
tr = trace_array_create_systems(name, NULL, addr, size);
if (IS_ERR(tr)) {
pr_warn("Tracing: Failed to create instance buffer %s\n", curr_str);
pr_warn("Tracing: Failed to create instance buffer '%s' (%ld)\n", name,
PTR_ERR(tr));
continue;
}