From: Daniel Borkmann <daniel@iogearbox.net>
To: davem@davemloft.net
Cc: tj@kernel.org, ast@kernel.org, john.fastabend@gmail.com,
mark.rutland@arm.com, richard@nod.at, sp3485@columbia.edu,
netdev@vger.kernel.org, linux-kernel@vger.kernel.org,
Daniel Borkmann <daniel@iogearbox.net>
Subject: [PATCH net 0/3] Fix for BPF devmap percpu allocation splat
Date: Tue, 17 Oct 2017 16:55:51 +0200 [thread overview]
Message-ID: <cover.1508251210.git.daniel@iogearbox.net> (raw)
The set fixes a splat in devmap percpu allocation when we alloc
the flush bitmap. Patch 1 is a prerequisite for the fix in patch 2,
patch 1 is rather small, so if this could be routed via -net, for
example, with Tejun's Ack that would be good. Patch 3 gets rid of
remaining PCPU_MIN_UNIT_SIZE checks, which are percpu allocator
internals and should not be used.
Thanks!
Daniel Borkmann (3):
mm, percpu: add support for __GFP_NOWARN flag
bpf: fix splat for illegal devmap percpu allocation
bpf: do not test for PCPU_MIN_UNIT_SIZE before percpu allocations
kernel/bpf/arraymap.c | 2 +-
kernel/bpf/devmap.c | 5 +++--
kernel/bpf/hashtab.c | 4 ----
mm/percpu.c | 15 ++++++++++-----
4 files changed, 14 insertions(+), 12 deletions(-)
--
1.9.3
next reply other threads:[~2017-10-17 14:55 UTC|newest]
Thread overview: 19+ messages / expand[flat|nested] mbox.gz Atom feed top
2017-10-17 14:55 Daniel Borkmann [this message]
2017-10-17 14:55 ` [PATCH net 1/3] mm, percpu: add support for __GFP_NOWARN flag Daniel Borkmann
2017-10-17 15:53 ` Alexei Starovoitov
2017-10-17 14:55 ` [PATCH net 2/3] bpf: fix splat for illegal devmap percpu allocation Daniel Borkmann
2017-10-17 15:54 ` Alexei Starovoitov
2017-10-17 16:28 ` John Fastabend
2017-10-17 14:55 ` [PATCH net 3/3] bpf: do not test for PCPU_MIN_UNIT_SIZE before percpu allocations Daniel Borkmann
2017-10-17 15:55 ` Alexei Starovoitov
2017-10-17 16:29 ` John Fastabend
2017-10-17 15:03 ` [PATCH net 0/3] Fix for BPF devmap percpu allocation splat David Laight
2017-10-17 15:11 ` Daniel Borkmann
2017-10-18 13:25 ` Tejun Heo
2017-10-18 14:03 ` Daniel Borkmann
2017-10-18 14:22 ` Daniel Borkmann
2017-10-18 15:28 ` Alexei Starovoitov
2017-10-18 15:31 ` Daniel Borkmann
2017-10-18 21:45 ` Dennis Zhou
2017-10-21 16:00 ` Tejun Heo
2017-10-19 12:14 ` David Miller
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