tracing: Remove extra zeroing out of the ring buffer page

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commit 6b7e633fe9 upstream.

The ring_buffer_read_page() takes care of zeroing out any extra data in the
page that it returns. There's no need to zero it out again from the
consumer. It was removed from one consumer of this function, but
read_buffers_splice_read() did not remove it, and worse, it contained a
nasty bug because of it.

Fixes: 2711ca237a ("ring-buffer: Move zeroing out excess in page to ring buffer code")
Signed-off-by: Steven Rostedt (VMware) <rostedt@goodmis.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

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Steven Rostedt (VMware) 2017-12-22 20:38:57 -05:00 • committed by Greg Kroah-Hartman

parent b8ce8232fc

commit 234bc12669

1 changed files with 1 additions and 9 deletions

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kernel/trace/trace.c

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