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tracing: Make sure the parsed string always terminates with '\0'

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Always mark the parsed string with a terminated nul '\0' character. This removes
the need for the users to have to append the '\0' before using the parsed string.

Link: http://lkml.kernel.org/r/1516093350-12045-4-git-send-email-changbin.du@intel.com

Acked-by: Namhyung Kim <namhyung@kernel.org>
Signed-off-by: Changbin Du <changbin.du@intel.com>
Signed-off-by: Steven Rostedt (VMware) <rostedt@goodmis.org>
This commit is contained in:
Changbin Du 2018-01-16 17:02:30 +08:00 • committed by Steven Rostedt (VMware)
parent 76638d9650
commit f4d0706cde
3 changed files with 2 additions and 6 deletions
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2
kernel/trace/trace_events.c
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@ -885,8 +885,6 @@ ftrace_event_write(struct file *file, const char __user *ubuf,
if (*parser.buffer == '!')
set = 0;
parser.buffer[parser.idx] = 0;
ret = ftrace_set_clr_event(tr, parser.buffer + !set, set);
if (ret)
goto out_put;