From: Jakub Kicinski <kuba@kernel.org>
To: Taehee Yoo <ap420073@gmail.com>
Cc: davem@davemloft.net, netdev@vger.kernel.org,
David.Laight@aculab.com, johannes@sipsolutions.net,
nstange@suse.de, derosier@gmail.com, kvalo@codeaurora.org,
linux-wireless@vger.kernel.org, wil6210@qti.qualcomm.com,
b43-dev@lists.infradead.org, linux-bluetooth@vger.kernel.org,
michael.hennerich@analog.com, linux-wpan@vger.kernel.org,
stefan@datenfreihafen.org, inaky.perez-gonzalez@intel.com,
linux-wimax@intel.com, emmanuel.grumbach@intel.com,
luciano.coelho@intel.com, stf_xl@wp.pl, pkshih@realtek.com,
ath11k@lists.infradead.org, ath10k@lists.infradead.org,
wcn36xx@lists.infradead.org, merez@codeaurora.org,
pizza@shaftnet.org, Larry.Finger@lwfinger.net,
amitkarwar@gmail.com, ganapathi.bhat@nxp.com,
huxinming820@gmail.com, marcel@holtmann.org,
johan.hedberg@gmail.com, alex.aring@gmail.com,
jukka.rissanen@linux.intel.com, arend.vanspriel@broadcom.com,
franky.lin@broadcom.com, hante.meuleman@broadcom.com,
chung-hsien.hsu@infineon.com, wright.feng@infineon.com,
chi-hsien.lin@infineon.com
Subject: Re: [PATCH net v2 00/21] net: avoid to remove module when its debugfs is being used
Date: Sat, 7 Nov 2020 11:05:22 -0800 [thread overview]
Message-ID: <20201107110522.2a796f1d@kicinski-fedora-pc1c0hjn.dhcp.thefacebook.com> (raw)
In-Reply-To: <20201107172152.828-1-ap420073@gmail.com>
On Sat, 7 Nov 2020 17:21:31 +0000 Taehee Yoo wrote:
> When debugfs file is opened, its module should not be removed until
> it's closed.
> Because debugfs internally uses the module's data.
> So, it could access freed memory.
>
> In order to avoid panic, it just sets .owner to THIS_MODULE.
> So that all modules will be held when its debugfs file is opened.
Hm, looks like some of the patches need to be revised because
.owner is already set in the ops, and a warning gets generated.
Also it'd be good to mention why Johannes's approach was abandoned.
When you repost please separate out all the patches for
drivers/net/wireless/ and send that to Kalle's wireless drivers tree.
Patch 1 needs to be split in two. Patches 2 and 3 would go via Johannes.
The wimax patch needs to go to staging (wimax code has been moved).
The remaining patches can be posted individually, not as a series.
WARNING: multiple messages have this Message-ID (diff)
From: Jakub Kicinski <kuba@kernel.org>
To: Taehee Yoo <ap420073@gmail.com>
Cc: alex.aring@gmail.com, emmanuel.grumbach@intel.com,
chi-hsien.lin@infineon.com, amitkarwar@gmail.com,
ganapathi.bhat@nxp.com, luciano.coelho@intel.com,
ath10k@lists.infradead.org, wcn36xx@lists.infradead.org,
stefan@datenfreihafen.org, merez@codeaurora.org, stf_xl@wp.pl,
pkshih@realtek.com, nstange@suse.de,
chung-hsien.hsu@infineon.com, wright.feng@infineon.com,
inaky.perez-gonzalez@intel.com, derosier@gmail.com,
David.Laight@aculab.com, b43-dev@lists.infradead.org,
ath11k@lists.infradead.org, arend.vanspriel@broadcom.com,
johan.hedberg@gmail.com, michael.hennerich@analog.com,
marcel@holtmann.org, hante.meuleman@broadcom.com,
linux-wimax@intel.com, jukka.rissanen@linux.intel.com,
kvalo@codeaurora.org, franky.lin@broadcom.com,
huxinming820@gmail.com, netdev@vger.kernel.org,
linux-wireless@vger.kernel.org, linux-bluetooth@vger.kernel.org,
wil6210@qti.qualcomm.com, johannes@sipsolutions.net,
Larry.Finger@lwfinger.net, linux-wpan@vger.kernel.org,
davem@davemloft.net, pizza@shaftnet.org
Subject: Re: [PATCH net v2 00/21] net: avoid to remove module when its debugfs is being used
Date: Sat, 7 Nov 2020 11:05:22 -0800 [thread overview]
Message-ID: <20201107110522.2a796f1d@kicinski-fedora-pc1c0hjn.dhcp.thefacebook.com> (raw)
In-Reply-To: <20201107172152.828-1-ap420073@gmail.com>
On Sat, 7 Nov 2020 17:21:31 +0000 Taehee Yoo wrote:
> When debugfs file is opened, its module should not be removed until
> it's closed.
> Because debugfs internally uses the module's data.
> So, it could access freed memory.
>
> In order to avoid panic, it just sets .owner to THIS_MODULE.
> So that all modules will be held when its debugfs file is opened.
Hm, looks like some of the patches need to be revised because
.owner is already set in the ops, and a warning gets generated.
Also it'd be good to mention why Johannes's approach was abandoned.
When you repost please separate out all the patches for
drivers/net/wireless/ and send that to Kalle's wireless drivers tree.
Patch 1 needs to be split in two. Patches 2 and 3 would go via Johannes.
The wimax patch needs to go to staging (wimax code has been moved).
The remaining patches can be posted individually, not as a series.
--
ath11k mailing list
ath11k@lists.infradead.org
http://lists.infradead.org/mailman/listinfo/ath11k
WARNING: multiple messages have this Message-ID (diff)
From: Jakub Kicinski <kuba@kernel.org>
To: Taehee Yoo <ap420073@gmail.com>
Cc: alex.aring@gmail.com, emmanuel.grumbach@intel.com,
chi-hsien.lin@infineon.com, amitkarwar@gmail.com,
ganapathi.bhat@nxp.com, luciano.coelho@intel.com,
ath10k@lists.infradead.org, wcn36xx@lists.infradead.org,
stefan@datenfreihafen.org, merez@codeaurora.org, stf_xl@wp.pl,
pkshih@realtek.com, nstange@suse.de,
chung-hsien.hsu@infineon.com, wright.feng@infineon.com,
inaky.perez-gonzalez@intel.com, derosier@gmail.com,
David.Laight@aculab.com, b43-dev@lists.infradead.org,
ath11k@lists.infradead.org, arend.vanspriel@broadcom.com,
johan.hedberg@gmail.com, michael.hennerich@analog.com,
marcel@holtmann.org, hante.meuleman@broadcom.com,
linux-wimax@intel.com, jukka.rissanen@linux.intel.com,
kvalo@codeaurora.org, franky.lin@broadcom.com,
huxinming820@gmail.com, netdev@vger.kernel.org,
linux-wireless@vger.kernel.org, linux-bluetooth@vger.kernel.org,
wil6210@qti.qualcomm.com, johannes@sipsolutions.net,
Larry.Finger@lwfinger.net, linux-wpan@vger.kernel.org,
davem@davemloft.net, pizza@shaftnet.org
Subject: Re: [PATCH net v2 00/21] net: avoid to remove module when its debugfs is being used
Date: Sat, 7 Nov 2020 11:05:22 -0800 [thread overview]
Message-ID: <20201107110522.2a796f1d@kicinski-fedora-pc1c0hjn.dhcp.thefacebook.com> (raw)
In-Reply-To: <20201107172152.828-1-ap420073@gmail.com>
On Sat, 7 Nov 2020 17:21:31 +0000 Taehee Yoo wrote:
> When debugfs file is opened, its module should not be removed until
> it's closed.
> Because debugfs internally uses the module's data.
> So, it could access freed memory.
>
> In order to avoid panic, it just sets .owner to THIS_MODULE.
> So that all modules will be held when its debugfs file is opened.
Hm, looks like some of the patches need to be revised because
.owner is already set in the ops, and a warning gets generated.
Also it'd be good to mention why Johannes's approach was abandoned.
When you repost please separate out all the patches for
drivers/net/wireless/ and send that to Kalle's wireless drivers tree.
Patch 1 needs to be split in two. Patches 2 and 3 would go via Johannes.
The wimax patch needs to go to staging (wimax code has been moved).
The remaining patches can be posted individually, not as a series.
_______________________________________________
ath10k mailing list
ath10k@lists.infradead.org
http://lists.infradead.org/mailman/listinfo/ath10k
next prev parent reply other threads:[~2020-11-07 19:05 UTC|newest]
Thread overview: 82+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-11-07 17:21 [PATCH net v2 00/21] net: avoid to remove module when its debugfs is being used Taehee Yoo
2020-11-07 17:21 ` Taehee Yoo
2020-11-07 17:21 ` Taehee Yoo
2020-11-07 17:21 ` [PATCH net v2 01/21] net: set .owner to THIS_MODULE Taehee Yoo
2020-11-07 17:21 ` Taehee Yoo
2020-11-07 17:21 ` Taehee Yoo
2020-11-07 17:48 ` net: avoid to remove module when its debugfs is being used bluez.test.bot
2020-11-07 17:21 ` [PATCH net v2 02/21] mac80211: set .owner to THIS_MODULE Taehee Yoo
2020-11-07 17:21 ` Taehee Yoo
2020-11-07 17:21 ` Taehee Yoo
2020-11-07 17:21 ` [PATCH net v2 03/21] cfg80211: " Taehee Yoo
2020-11-07 17:21 ` Taehee Yoo
2020-11-07 17:21 ` Taehee Yoo
2020-11-07 17:21 ` [PATCH net v2 04/21] netdevsim: " Taehee Yoo
2020-11-07 17:21 ` Taehee Yoo
2020-11-07 17:21 ` Taehee Yoo
2020-11-07 17:21 ` [PATCH net v2 05/21] ieee802154: " Taehee Yoo
2020-11-07 17:21 ` Taehee Yoo
2020-11-07 17:21 ` Taehee Yoo
2020-11-07 17:21 ` [PATCH net v2 06/21] i2400m: " Taehee Yoo
2020-11-07 17:21 ` Taehee Yoo
2020-11-07 17:21 ` Taehee Yoo
2020-11-07 17:21 ` [PATCH net v2 07/21] wlcore: " Taehee Yoo
2020-11-07 17:21 ` Taehee Yoo
2020-11-07 17:21 ` Taehee Yoo
2020-11-07 17:21 ` [PATCH net v2 08/21] wl1251: " Taehee Yoo
2020-11-07 17:21 ` Taehee Yoo
2020-11-07 17:21 ` Taehee Yoo
2020-11-07 17:21 ` [PATCH net v2 09/21] iwlwifi: " Taehee Yoo
2020-11-07 17:21 ` Taehee Yoo
2020-11-07 17:21 ` Taehee Yoo
2020-11-07 17:21 ` [PATCH net v2 10/21] iwlegacy: " Taehee Yoo
2020-11-07 17:21 ` Taehee Yoo
2020-11-07 17:21 ` Taehee Yoo
2020-11-07 17:21 ` [PATCH net v2 11/21] rtlwifi: " Taehee Yoo
2020-11-07 17:21 ` Taehee Yoo
2020-11-07 17:21 ` Taehee Yoo
2020-11-07 17:21 ` [PATCH net v2 12/21] ath11k: " Taehee Yoo
2020-11-07 17:21 ` Taehee Yoo
2020-11-07 17:21 ` Taehee Yoo
2020-11-07 17:21 ` [PATCH net v2 13/21] ath10k: " Taehee Yoo
2020-11-07 17:21 ` Taehee Yoo
2020-11-07 17:21 ` Taehee Yoo
2020-11-07 17:21 ` [PATCH net v2 14/21] wcn36xx: " Taehee Yoo
2020-11-07 17:21 ` Taehee Yoo
2020-11-07 17:21 ` Taehee Yoo
2020-11-07 17:21 ` [PATCH net v2 15/21] wil6210: " Taehee Yoo
2020-11-07 17:21 ` Taehee Yoo
2020-11-07 17:21 ` Taehee Yoo
2020-11-07 17:21 ` [PATCH net v2 16/21] cw1200: " Taehee Yoo
2020-11-07 17:21 ` Taehee Yoo
2020-11-07 17:21 ` Taehee Yoo
2020-11-07 17:21 ` [PATCH net v2 17/21] brcmfmac: " Taehee Yoo
2020-11-07 17:21 ` Taehee Yoo
2020-11-07 17:21 ` Taehee Yoo
2020-11-07 17:41 ` Arend Van Spriel
2020-11-07 17:41 ` Arend Van Spriel
2020-11-07 17:41 ` Arend Van Spriel
2020-11-07 18:16 ` Taehee Yoo
2020-11-07 18:16 ` Taehee Yoo
2020-11-07 18:16 ` Taehee Yoo
2020-11-07 17:21 ` [PATCH net v2 18/21] b43legacy: " Taehee Yoo
2020-11-07 17:21 ` Taehee Yoo
2020-11-07 17:21 ` Taehee Yoo
2020-11-07 17:21 ` [PATCH net v2 19/21] b43: " Taehee Yoo
2020-11-07 17:21 ` Taehee Yoo
2020-11-07 17:21 ` Taehee Yoo
2020-11-07 17:21 ` [PATCH net v2 20/21] mwifiex: mwifiex: " Taehee Yoo
2020-11-07 17:21 ` Taehee Yoo
2020-11-07 17:21 ` Taehee Yoo
2020-11-07 17:21 ` [PATCH net v2 21/21] Bluetooth: " Taehee Yoo
2020-11-07 17:21 ` Taehee Yoo
2020-11-07 17:21 ` Taehee Yoo
2020-11-07 19:05 ` Jakub Kicinski [this message]
2020-11-07 19:05 ` [PATCH net v2 00/21] net: avoid to remove module when its debugfs is being used Jakub Kicinski
2020-11-07 19:05 ` Jakub Kicinski
2020-11-07 19:52 ` Taehee Yoo
2020-11-07 19:52 ` Taehee Yoo
2020-11-07 19:52 ` Taehee Yoo
2020-11-10 8:32 ` Johannes Berg
2020-11-10 8:32 ` Johannes Berg
2020-11-10 8:32 ` Johannes Berg
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