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tracing: Fix trace_seq_bitmask() to start at current position
In trace_seq_bitmask() it calls bitmap_scnprintf() not from the current position of the trace_seq buffer (s->buffer + s->len), but instead from the beginning of the buffer (s->buffer). Luckily, the only user of this "ipi_raise tracepoint" uses it as the first parameter, and as such, the start of the temp buffer in include/trace/ftrace.h (see __get_bitmask()). Reported-by: Petr Mladek <pmladek@suse.cz> Reviewed-by: Petr Mladek <pmladek@suse.cz> Signed-off-by: Steven Rostedt <rostedt@goodmis.org>
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@ -122,7 +122,7 @@ int trace_seq_bitmask(struct trace_seq *s, const unsigned long *maskp,
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if (s->full || !len)
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return 0;
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ret = bitmap_scnprintf(s->buffer, len, maskp, nmaskbits);
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ret = bitmap_scnprintf(s->buffer + s->len, len, maskp, nmaskbits);
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s->len += ret;
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return 1;
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