Ravi Bangoria 232ac0764a perf/ioctl: Add check for the sample_period value ... [ Upstream commit 913a90bc5a ] perf_event_open() limits the sample_period to 63 bits. See: 0819b2e30c ("perf: Limit perf_event_attr::sample_period to 63 bits") Make ioctl() consistent with it. Also on PowerPC, negative sample_period could cause a recursive PMIs leading to a hang (reported when running perf-fuzzer). Signed-off-by: Ravi Bangoria <ravi.bangoria@linux.ibm.com> Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org> 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> Cc: acme@kernel.org Cc: linuxppc-dev@lists.ozlabs.org Cc: maddy@linux.vnet.ibm.com Cc: mpe@ellerman.id.au Fixes: 0819b2e30c ("perf: Limit perf_event_attr::sample_period to 63 bits") Link: https://lkml.kernel.org/r/20190604042953.914-1-ravi.bangoria@linux.ibm.com Signed-off-by: Ingo Molnar <mingo@kernel.org> Signed-off-by: Sasha Levin <sashal@kernel.org>		2020-01-27 14:46:38 +01:00
..
callchain.c	perf: Remove superfluous allocation error check	2018-05-16 10:10:24 +02:00
core.c	perf/ioctl: Add check for the sample_period value	2020-01-27 14:46:38 +01:00
hw_breakpoint.c	perf/hwbp: Simplify the perf-hwbp code, fix documentation	2018-04-08 14:26:27 +02:00
internal.h	License cleanup: add SPDX GPL-2.0 license identifier to files with no license	2017-11-02 11:10:55 +01:00
Makefile	License cleanup: add SPDX GPL-2.0 license identifier to files with no license	2017-11-02 11:10:55 +01:00
ring_buffer.c	perf/ring-buffer: Always use {READ,WRITE}_ONCE() for rb->user_page data	2019-06-22 08:16:16 +02:00
uprobes.c	signal: Properly deliver SIGILL from uprobes	2019-11-20 17:59:52 +01:00