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tracing: Check the return value of tracing_update_buffers()

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In the very unlikely event that tracing_update_buffers() fails in
trace_printk_init_buffers(), report the failure so that it is known.

Link: https://lore.kernel.org/all/20220917020353.3836285-1-floridsleeves@gmail.com/

Cc: Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
Link: https://patch.msgid.link/20260107161510.4dc98b15@gandalf.local.home
Suggested-by: Li Zhong <floridsleeves@gmail.com>
Acked-by: Masami Hiramatsu (Google) <mhiramat@kernel.org>
Signed-off-by: Steven Rostedt (Google) <rostedt@goodmis.org>
This commit is contained in:
Steven Rostedt 2026-01-07 16:15:10 -05:00 committed by Steven Rostedt (Google)
parent 6a80838814
commit e4ef389e76
1 changed files with 4 additions and 3 deletions
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7
kernel/trace/trace.c
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@ -3309,9 +3309,10 @@ void trace_printk_init_buffers(void)
pr_warn("**********************************************************\n");
/* Expand the buffers to set size */
tracing_update_buffers(&global_trace);
buffers_allocated = 1;
if (tracing_update_buffers(&global_trace) < 0)
pr_err("Failed to expand tracing buffers for trace_printk() calls\n");
else
buffers_allocated = 1;
/*
* trace_printk_init_buffers() can be called by modules.