From: Daniel Borkmann <daniel@iogearbox.net>
To: Amol Grover <frextrite@gmail.com>,
Alexei Starovoitov <ast@kernel.org>,
"David S . Miller" <davem@davemloft.net>,
Jesper Dangaard Brouer <hawk@kernel.org>,
John Fastabend <john.fastabend@gmail.com>,
Martin KaFai Lau <kafai@fb.com>, Song Liu <songliubraving@fb.com>,
Yonghong Song <yhs@fb.com>, Andrii Nakryiko <andriin@fb.com>,
brouer@redhat.com, toke@redhat.com
Cc: "Paul E . McKenney" <paulmck@kernel.org>,
netdev@vger.kernel.org, linux-kernel@vger.kernel.org,
Joel Fernandes <joel@joelfernandes.org>,
bpf@vger.kernel.org,
linux-kernel-mentees@lists.linuxfoundation.org
Subject: Re: [Linux-kernel-mentees] [PATCH] bpf: devmap: Pass lockdep expression to RCU lists
Date: Thu, 23 Jan 2020 23:04:31 +0100 [thread overview]
Message-ID: <991cab17-3616-4cb4-60f5-5fe235e5bec8@iogearbox.net> (raw)
In-Reply-To: <20200123171800.GC4484@workstation-portable>
On 1/23/20 6:18 PM, Amol Grover wrote:
> On Thu, Jan 23, 2020 at 05:34:38PM +0530, Amol Grover wrote:
>> head is traversed using hlist_for_each_entry_rcu outside an
>> RCU read-side critical section but under the protection
>> of dtab->index_lock.
>>
>> Hence, add corresponding lockdep expression to silence false-positive
>> lockdep warnings, and harden RCU lists.
>>
> Fixes: 6f9d451ab1a3 ("xdp: Add devmap_hash map type for looking up devices by hashed index")
>> Signed-off-by: Amol Grover <frextrite@gmail.com>
Applied, thanks!
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prev parent reply other threads:[~2020-01-23 22:04 UTC|newest]
Thread overview: 8+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-01-23 12:04 [Linux-kernel-mentees] [PATCH] bpf: devmap: Pass lockdep expression to RCU lists Amol Grover
2020-01-23 13:37 ` Jesper Dangaard Brouer
2020-01-23 13:42 ` Toke Høiland-Jørgensen
2020-01-23 17:10 ` Amol Grover
2020-01-23 13:38 ` Toke Høiland-Jørgensen
2020-01-23 15:59 ` Daniel Borkmann
2020-01-23 17:18 ` Amol Grover
2020-01-23 22:04 ` Daniel Borkmann [this message]
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