linux-uconsole/kernel/events
Tan Xiaojun 609124d603 perf/core: Fix the perf_cpu_time_max_percent check
commit 1572e45a92 upstream.

Use "proc_dointvec_minmax" instead of "proc_dointvec" to check the input
value from user-space.

If not, we can set a big value and some vars will overflow like
"sysctl_perf_event_sample_rate" which will cause a lot of unexpected
problems.

Signed-off-by: Tan Xiaojun <tanxiaojun@huawei.com>
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Cc: <acme@kernel.org>
Cc: <alexander.shishkin@linux.intel.com>
Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Cc: Arnaldo Carvalho de Melo <acme@redhat.com>
Cc: Jiri Olsa <jolsa@redhat.com>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Stephane Eranian <eranian@google.com>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Vince Weaver <vincent.weaver@maine.edu>
Link: http://lkml.kernel.org/r/1487829879-56237-1-git-send-email-tanxiaojun@huawei.com
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Cc: Guenter Roeck <linux@roeck-us.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2018-05-16 10:06:45 +02:00
..
callchain.c treewide: Remove old email address 2015-11-23 09:44:58 +01:00
core.c perf/core: Fix the perf_cpu_time_max_percent check 2018-05-16 10:06:45 +02:00
hw_breakpoint.c perf/hwbp: Simplify the perf-hwbp code, fix documentation 2018-04-08 11:51:56 +02:00
internal.h perf: Fix AUX buffer refcounting 2015-07-06 14:08:30 +02:00
Makefile ftrace: allow architectures to specify ftrace compile options 2015-01-29 09:19:19 +01:00
ring_buffer.c perf/core: Disable the event on a truncated AUX record 2016-05-18 17:06:48 -07:00
uprobes.c uprobes: Fix the memcg accounting 2016-09-15 08:27:53 +02:00