netdev - Re: [PATCH net-next] bpf: bpf_event_entry_gen's alloc needs to be in atomic context

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Date:	Sat, 16 Jul 2016 22:04:35 -0700 (PDT)
From:	David Miller <davem@...emloft.net>
To:	daniel@...earbox.net
Cc:	alexei.starovoitov@...il.com, netdev@...r.kernel.org
Subject: Re: [PATCH net-next] bpf: bpf_event_entry_gen's alloc needs to be
 in atomic context

From: Daniel Borkmann <daniel@...earbox.net>
Date: Sat, 16 Jul 2016 01:15:55 +0200

> Should have been obvious, only called from bpf() syscall via map_update_elem()
> that calls bpf_fd_array_map_update_elem() under RCU read lock and thus this
> must also be in GFP_ATOMIC, of course.
> 
> Fixes: 3b1efb196eee ("bpf, maps: flush own entries on perf map release")
> Signed-off-by: Daniel Borkmann <daniel@...earbox.net>
> Acked-by: Alexei Starovoitov <ast@...nel.org>

Applied.