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From: Jiri Pirko <jiri@resnulli.us>
To: madhuparnabhowmik10@gmail.com
Cc: paulmck@kernel.org, netdev@vger.kernel.org,
	linux-kernel@vger.kernel.org, jiri@mellanox.com,
	joel@joelfernandes.org,
	linux-kernel-mentees@lists.linuxfoundation.org,
	davem@davemloft.net
Subject: Re: [Linux-kernel-mentees] [PATCH] net: core: devlink.c: Hold devlink->lock from the beginning of devlink_dpipe_table_register()
Date: Sun, 23 Feb 2020 19:17:46 +0100	[thread overview]
Message-ID: <20200223181746.GF2228@nanopsycho> (raw)
In-Reply-To: <20200223112233.13417-1-madhuparnabhowmik10@gmail.com>

Sun, Feb 23, 2020 at 12:22:33PM CET, madhuparnabhowmik10@gmail.com wrote:
>From: Madhuparna Bhowmik <madhuparnabhowmik10@gmail.com>
>
>devlink_dpipe_table_find() should be called under either
>rcu_read_lock() or devlink->lock. devlink_dpipe_table_register()
>calls devlink_dpipe_table_find() without holding the lock
>and acquires it later. Therefore hold the devlink->lock
>from the beginning of devlink_dpipe_table_register().
>
>Suggested-by: Jiri Pirko <jiri@mellanox.com>
>Signed-off-by: Madhuparna Bhowmik <madhuparnabhowmik10@gmail.com>

Reviewed-by: Jiri Pirko <jiri@mellanox.com>
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https://lists.linuxfoundation.org/mailman/listinfo/linux-kernel-mentees

WARNING: multiple messages have this Message-ID (diff)
From: Jiri Pirko <jiri@resnulli.us>
To: madhuparnabhowmik10@gmail.com
Cc: jiri@mellanox.com, davem@davemloft.net, netdev@vger.kernel.org,
	linux-kernel@vger.kernel.org, joel@joelfernandes.org,
	linux-kernel-mentees@lists.linuxfoundation.org,
	paulmck@kernel.org
Subject: Re: [PATCH] net: core: devlink.c: Hold devlink->lock from the beginning of devlink_dpipe_table_register()
Date: Sun, 23 Feb 2020 19:17:46 +0100	[thread overview]
Message-ID: <20200223181746.GF2228@nanopsycho> (raw)
In-Reply-To: <20200223112233.13417-1-madhuparnabhowmik10@gmail.com>

Sun, Feb 23, 2020 at 12:22:33PM CET, madhuparnabhowmik10@gmail.com wrote:
>From: Madhuparna Bhowmik <madhuparnabhowmik10@gmail.com>
>
>devlink_dpipe_table_find() should be called under either
>rcu_read_lock() or devlink->lock. devlink_dpipe_table_register()
>calls devlink_dpipe_table_find() without holding the lock
>and acquires it later. Therefore hold the devlink->lock
>from the beginning of devlink_dpipe_table_register().
>
>Suggested-by: Jiri Pirko <jiri@mellanox.com>
>Signed-off-by: Madhuparna Bhowmik <madhuparnabhowmik10@gmail.com>

Reviewed-by: Jiri Pirko <jiri@mellanox.com>

  reply	other threads:[~2020-02-23 18:17 UTC|newest]

Thread overview: 12+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2020-02-23 11:22 [Linux-kernel-mentees] [PATCH] net: core: devlink.c: Hold devlink->lock from the beginning of devlink_dpipe_table_register() madhuparnabhowmik10
2020-02-23 11:22 ` madhuparnabhowmik10
2020-02-23 18:17 ` Jiri Pirko [this message]
2020-02-23 18:17   ` Jiri Pirko
  -- strict thread matches above, loose matches on Subject: below --
2020-02-23 10:52 [Linux-kernel-mentees] " madhuparnabhowmik10
2020-02-23 11:01 ` Jiri Pirko
2020-02-22  6:52 madhuparnabhowmik10
2020-02-23  6:43 ` Jiri Pirko
2020-02-23 10:56   ` Madhuparna Bhowmik
2020-02-21 18:09 madhuparnabhowmik10
2020-02-22  6:26 ` Jiri Pirko
2020-02-22  6:55   ` Madhuparna Bhowmik

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