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Message-ID: <87zlf8kxmd.wl%vmayatsk@redhat.com> Date: Thu, 26 Mar 2009 18:22:18 +0100 From: Vitaly Mayatskikh <v.mayatskih@...il.com> To: linux-kernel@...r.kernel.org Cc: Pekka Paalanen <pq@....fi> Subject: [PATCH] ftrace: advance readpos in trace_seq_to_user() by really read bytes If tracer will not provide input buffer of enough size, he will never see data between cnt and len bytes. diff --git a/kernel/trace/trace.c b/kernel/trace/trace.c index 17bb88d..0217615 100644 --- a/kernel/trace/trace.c +++ b/kernel/trace/trace.c @@ -477,7 +477,7 @@ ssize_t trace_seq_to_user(struct trace_seq *s, char __user *ubuf, size_t cnt) if (ret) return -EFAULT; - s->readpos += len; + s->readpos += cnt; return cnt; } -- wbr, Vitaly -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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