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tracing: Don't inc err_log entry count if entry allocation fails

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commit 67ab5eb71b upstream.

tr->n_err_log_entries should only be increased if entry allocation
succeeds.

Doing it when it fails won't cause any problems other than wasting an
entry, but should be fixed anyway.

Link: https://lkml.kernel.org/r/cad1ab28f75968db0f466925e7cba5970cec6c29.1643319703.git.zanussi@kernel.org

Cc: stable@vger.kernel.org
Fixes: 2f754e771b ("tracing: Don't inc err_log entry count if entry allocation fails")
Signed-off-by: Tom Zanussi <zanussi@kernel.org>
Signed-off-by: Steven Rostedt (Google) <rostedt@goodmis.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Tom Zanussi 2022-01-27 15:44:18 -06:00 • committed by Justin Hammond
parent c4f0051437
commit c75ee64e85
1 changed files with 2 additions and 1 deletions
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3
kernel/trace/trace.c
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@ -7749,7 +7749,8 @@ static struct tracing_log_err *get_tracing_log_err(struct trace_array *tr)
err = kzalloc(sizeof(*err), GFP_KERNEL);
if (!err)
err = ERR_PTR(-ENOMEM);
tr->n_err_log_entries++;
else
tr->n_err_log_entries++;
return err;
}