Daniel Borkmann ceb5607035 bpf, perf: delay release of BPF prog after grace period ... Commit dead9f29dd ("perf: Fix race in BPF program unregister") moved destruction of BPF program from free_event_rcu() callback to __free_event(), which is problematic if used with tail calls: if prog A is attached as trace event directly, but at the same time present in a tail call map used by another trace event program elsewhere, then we need to delay destruction via RCU grace period since it can still be in use by the program doing the tail call (the prog first needs to be dropped from the tail call map, then trace event with prog A attached destroyed, so we get immediate destruction). Fixes: dead9f29dd ("perf: Fix race in BPF program unregister") Signed-off-by: Daniel Borkmann <daniel@iogearbox.net> Acked-by: Alexei Starovoitov <ast@kernel.org> Cc: Jann Horn <jann@thejh.net> Signed-off-by: David S. Miller <davem@davemloft.net>		2016-06-29 05:42:55 -04:00
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callchain.c	perf core: Separate accounting of contexts and real addresses in a stack trace	2016-05-16 23:11:53 -03:00
core.c	bpf, perf: delay release of BPF prog after grace period	2016-06-29 05:42:55 -04:00
hw_breakpoint.c	perf: Collapse and fix event_function_call() users	2016-01-21 18:54:24 +01:00
internal.h	Linux 4.6-rc3	2016-04-13 08:57:03 +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	2016-05-12 14:46:11 +02:00
uprobes.c	uprobes: wait for mmap_sem for write killable	2016-05-23 17:04:14 -07:00