Commit 4823ed7e authored by Steven Rostedt's avatar Steven Rostedt Committed by Thomas Gleixner
Browse files

ftrace: fix setting of pos in read_pipe

In resetting the iterator in read_pipe, the reset of pos was
postitioned in the wrong location with respect to the memset
operation. The current code sets pos, incorrectly, to zero.

Signed-off-by: default avatarSteven Rostedt <>
Signed-off-by: default avatarIngo Molnar <>
Signed-off-by: default avatarThomas Gleixner <>
parent 2f1dafe5
......@@ -2455,10 +2455,10 @@ tracing_read_pipe(struct file *filp, char __user *ubuf,
cnt = PAGE_SIZE - 1;
/* reset all but tr, trace, and overruns */
iter->pos = -1;
memset(&iter->seq, 0,
sizeof(struct trace_iterator) -
offsetof(struct trace_iterator, seq));
iter->pos = -1;
* We need to stop all tracing on all CPUS to read the
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