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| author | Herbert Xu <herbert@gondor.apana.org.au> | 2017-03-14 13:25:57 +0300 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2017-03-22 00:38:15 +0300 |
| commit | 8a0f5ccfb33b0b8b51de65b7b3bf342ba10b4fb6 (patch) | |
| tree | 7ee2aabab355f030568c83095f1c13d455e1b564 /include/linux | |
| parent | 98d068ab52b4b11d403995ed14154660797e7136 (diff) | |
| download | linux-8a0f5ccfb33b0b8b51de65b7b3bf342ba10b4fb6.tar.xz | |
crypto: deadlock between crypto_alg_sem/rtnl_mutex/genl_mutex
On Tue, Mar 14, 2017 at 10:44:10AM +0100, Dmitry Vyukov wrote:
>
> Yes, please.
> Disregarding some reports is not a good way long term.
Please try this patch.
---8<---
Subject: netlink: Annotate nlk cb_mutex by protocol
Currently all occurences of nlk->cb_mutex are annotated by lockdep
as a single class. This causes a false lcokdep cycle involving
genl and crypto_user.
This patch fixes it by dividing cb_mutex into individual classes
based on the netlink protocol. As genl and crypto_user do not
use the same netlink protocol this breaks the false dependency
loop.
Reported-by: Dmitry Vyukov <dvyukov@google.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'include/linux')
0 files changed, 0 insertions, 0 deletions