Song Liu 07c5972951 perf/cgroups: Install cgroup events to correct cpuctx ... cgroup events are always installed in the cpuctx. However, when it is not installed via IPI, list_update_cgroup_event() adds it to cpuctx of current CPU, which triggers list corruption: [] list_add double add: new=ffff888ff7cf0db0, prev=ffff888ff7ce82f0, next=ffff888ff7cf0db0. To reproduce this, we can simply run: # perf stat -e cs -a & # perf stat -e cs -G anycgroup Fix this by installing it to cpuctx that contains event->ctx, and the proper cgrp_cpuctx_list. Fixes: db0503e4f6 ("perf/core: Optimize perf_install_in_event()") Suggested-by: Peter Zijlstra (Intel) <peterz@infradead.org> Signed-off-by: Song Liu <songliubraving@fb.com> Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org> Signed-off-by: Ingo Molnar <mingo@kernel.org> Cc: <stable@vger.kernel.org> Link: https://lkml.kernel.org/r/20200122195027.2112449-1-songliubraving@fb.com		2020-01-28 21:20:19 +01:00
..
callchain.c	perf/core: Convert to SPDX license identifiers	2019-02-04 08:46:11 +01:00
core.c	perf/cgroups: Install cgroup events to correct cpuctx	2020-01-28 21:20:19 +01:00
hw_breakpoint.c	perf/hw_breakpoint: Fix arch_hw_breakpoint use-before-initialization	2019-09-06 08:24:01 +02:00
internal.h	perf/aux: Allow using AUX data in perf samples	2019-11-13 11:06:14 +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/aux: Allow using AUX data in perf samples	2019-11-13 11:06:14 +01:00
uprobes.c	mm/mmap.c: use IS_ERR_VALUE to check return value of get_unmapped_area	2019-12-01 06:29:19 -08:00