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Commit 40ed29b3 authored by YueHaibing's avatar YueHaibing Committed by Steven Rostedt (VMware)
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ring-buffer: Fix ring buffer size in rb_write_something() 

'cnt' should be used to calculate ring buffer size rather than data->cnt

Link: http://lkml.kernel.org/r/1537704693-184237-1-git-send-email-yuehaibing@huawei.com



Signed-off-by: default avatarYueHaibing <yuehaibing@huawei.com>
Signed-off-by: default avatarSteven Rostedt (VMware) <rostedt@goodmis.org>
parent 79a3aaa7

kernel/trace/ring_buffer.c

+1 −1
Original line number Original line Diff line number Diff line
@@ -4979,7 +4979,7 @@ static __init int rb_write_something(struct rb_test_data *data, bool nested) 
	cnt = data->cnt + (nested ? 27 : 0);

	cnt = data->cnt + (nested ? 27 : 0);





	/* Multiply cnt by ~e, to make some unique increment */

	/* Multiply cnt by ~e, to make some unique increment */

	size = (data->cnt * 68 / 25) % (sizeof(rb_string) - 1);

	size = (cnt * 68 / 25) % (sizeof(rb_string) - 1);





	len = size + sizeof(struct rb_item);

	len = size + sizeof(struct rb_item);