bpf: fix rcu annotations in compute_effective_progs()

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The progs local variable in compute_effective_progs() is marked
as __rcu, which is not correct. This is a local pointer, which
is initialized by bpf_prog_array_alloc(), which also now
returns a generic non-rcu pointer.

The real rcu-protected pointer is *array (array is a pointer
to an RCU-protected pointer), so the assignment should be performed
using rcu_assign_pointer().

Fixes: 324bda9e6c ("bpf: multi program support for cgroup+bpf")
Signed-off-by: Roman Gushchin <guro@fb.com>
Cc: Alexei Starovoitov <ast@kernel.org>
Cc: Daniel Borkmann <daniel@iogearbox.net>
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>

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Roman Gushchin 2018-07-13 12:41:11 -07:00 • committed by Daniel Borkmann

parent d29ab6e1fa

commit 3960f4fd65

1 changed files with 3 additions and 4 deletions

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kernel/bpf/cgroup.c

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