From: Xiaoming Ni <nixiaoming@huawei.com>
To: <gregkh@linuxfoundation.org>, <akpm@linux-foundation.org>,
<vvs@virtuozzo.com>, <torvalds@linux-foundation.org>,
<adobriyan@gmail.com>, <anna.schumaker@netapp.com>,
<arjan@linux.intel.com>, <bfields@fieldses.org>,
<chuck.lever@oracle.com>, <davem@davemloft.net>,
<jlayton@kernel.org>, <luto@kernel.org>, <mingo@kernel.org>,
<Nadia.Derbey@bull.net>, <paulmck@linux.vnet.ibm.com>,
<semen.protsenko@linaro.org>, <stern@rowland.harvard.edu>,
<tglx@linutronix.de>, <trond.myklebust@hammerspace.com>,
<viresh.kumar@linaro.org>
Cc: <stable@kernel.org>, <dylix.dailei@huawei.com>,
<nixiaoming@huawei.com>, <yuehaibing@huawei.com>,
<linux-kernel@vger.kernel.org>, <linux-nfs@vger.kernel.org>,
<netdev@vger.kernel.org>
Subject: [PATCH v4 0/3] kernel/notifier.c: intercepting duplicate registrations to avoid infinite loops
Date: Thu, 19 Sep 2019 10:58:05 +0800 [thread overview]
Message-ID: <1568861888-34045-1-git-send-email-nixiaoming@huawei.com> (raw)
Registering the same notifier to a hook repeatedly can cause the hook
list to form a ring or lose other members of the list.
so, need add a check in in notifier_chain_register(),
intercepting duplicate registrations to avoid infinite loops
v1:
* use notifier_chain_cond_register replace notifier_chain_register
v2:
* Add a check in notifier_chain_register() to avoid duplicate registration
* remove notifier_chain_cond_register() to avoid duplicate code
* remove blocking_notifier_chain_cond_register() to avoid duplicate code
v3:
* Add a cover letter.
v4:
* Add Reviewed-by and adjust the title.
Xiaoming Ni (3):
kernel/notifier.c: intercepting duplicate registrations to avoid
infinite loops
kernel/notifier.c: remove notifier_chain_cond_register()
kernel/notifier.c: remove blocking_notifier_chain_cond_register()
include/linux/notifier.h | 4 ----
kernel/notifier.c | 41 +++--------------------------------------
net/sunrpc/rpc_pipe.c | 2 +-
3 files changed, 4 insertions(+), 43 deletions(-)
--
1.8.5.6
next reply other threads:[~2019-09-19 2:58 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-09-19 2:58 Xiaoming Ni [this message]
2019-09-19 2:58 ` [PATCH v4 1/3] kernel/notifier.c: intercepting duplicate registrations to avoid infinite loops Xiaoming Ni
2019-09-19 6:36 ` Greg KH
2019-09-19 12:55 ` Xiaoming Ni
2019-09-19 2:58 ` [PATCH v4 2/3] kernel/notifier.c: remove notifier_chain_cond_register() Xiaoming Ni
2019-09-19 2:58 ` [PATCH v4 3/3] kernel/notifier.c: remove blocking_notifier_chain_cond_register() Xiaoming Ni
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