Peter Zijlstra 12ca6ad2e3 perf: Fix race in swevent hash ... There's a race on CPU unplug where we free the swevent hash array while it can still have events on. This will result in a use-after-free which is BAD. Simply do not free the hash array on unplug. This leaves the thing around and no use-after-free takes place. When the last swevent dies, we do a for_each_possible_cpu() iteration anyway to clean these up, at which time we'll free it, so no leakage will occur. Reported-by: Sasha Levin <sasha.levin@oracle.com> Tested-by: Sasha Levin <sasha.levin@oracle.com> Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org> Cc: Arnaldo Carvalho de Melo <acme@redhat.com> Cc: Frederic Weisbecker <fweisbec@gmail.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> Signed-off-by: Ingo Molnar <mingo@kernel.org>		2016-01-06 10:52:39 +01:00
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callchain.c	treewide: Remove old email address	2015-11-23 09:44:58 +01:00
core.c	perf: Fix race in swevent hash	2016-01-06 10:52:39 +01:00
hw_breakpoint.c	perf: Remove type specific target pointers	2015-03-23 10:58:04 +01:00
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	treewide: Remove old email address	2015-11-23 09:44:58 +01:00
uprobes.c	treewide: Remove old email address	2015-11-23 09:44:58 +01:00