[096/190] Revert "net: mwifiex: fix a NULL pointer dereference"
diff mbox series

Message ID 20210421130105.1226686-97-gregkh@linuxfoundation.org
State New, archived
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Series
  • Revertion of all of the umn.edu commits
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Commit Message

Greg Kroah-Hartman April 21, 2021, 12:59 p.m. UTC
This reverts commit e5b9b206f3f6376b9a1406b67eafe4e7bb9f123c.

Commits from @umn.edu addresses have been found to be submitted in "bad
faith" to try to test the kernel community's ability to review "known
malicious" changes.  The result of these submissions can be found in a
paper published at the 42nd IEEE Symposium on Security and Privacy
entitled, "Open Source Insecurity: Stealthily Introducing
Vulnerabilities via Hypocrite Commits" written by Qiushi Wu (University
of Minnesota) and Kangjie Lu (University of Minnesota).

Because of this, all submissions from this group must be reverted from
the kernel tree and will need to be re-reviewed again to determine if
they actually are a valid fix.  Until that work is complete, remove this
change to ensure that no problems are being introduced into the
codebase.

Cc: Kangjie Lu <kjlu@umn.edu>
Cc: Kalle Valo <kvalo@codeaurora.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
 drivers/net/wireless/marvell/mwifiex/cmdevt.c | 6 ------
 1 file changed, 6 deletions(-)

Comments

Greg Kroah-Hartman April 28, 2021, 5:28 a.m. UTC | #1
On Wed, Apr 21, 2021 at 02:59:31PM +0200, Greg Kroah-Hartman wrote:
> This reverts commit e5b9b206f3f6376b9a1406b67eafe4e7bb9f123c.
> 
> Commits from @umn.edu addresses have been found to be submitted in "bad
> faith" to try to test the kernel community's ability to review "known
> malicious" changes.  The result of these submissions can be found in a
> paper published at the 42nd IEEE Symposium on Security and Privacy
> entitled, "Open Source Insecurity: Stealthily Introducing
> Vulnerabilities via Hypocrite Commits" written by Qiushi Wu (University
> of Minnesota) and Kangjie Lu (University of Minnesota).
> 
> Because of this, all submissions from this group must be reverted from
> the kernel tree and will need to be re-reviewed again to determine if
> they actually are a valid fix.  Until that work is complete, remove this
> change to ensure that no problems are being introduced into the
> codebase.
> 
> Cc: Kangjie Lu <kjlu@umn.edu>
> Cc: Kalle Valo <kvalo@codeaurora.org>
> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
> ---
>  drivers/net/wireless/marvell/mwifiex/cmdevt.c | 6 ------
>  1 file changed, 6 deletions(-)
> 
> diff --git a/drivers/net/wireless/marvell/mwifiex/cmdevt.c b/drivers/net/wireless/marvell/mwifiex/cmdevt.c
> index 3a11342a6bde..bda8a236e386 100644
> --- a/drivers/net/wireless/marvell/mwifiex/cmdevt.c
> +++ b/drivers/net/wireless/marvell/mwifiex/cmdevt.c
> @@ -339,12 +339,6 @@ static int mwifiex_dnld_sleep_confirm_cmd(struct mwifiex_adapter *adapter)
>  		sleep_cfm_tmp =
>  			dev_alloc_skb(sizeof(struct mwifiex_opt_sleep_confirm)
>  				      + MWIFIEX_TYPE_LEN);
> -		if (!sleep_cfm_tmp) {
> -			mwifiex_dbg(adapter, ERROR,
> -				    "SLEEP_CFM: dev_alloc_skb failed\n");
> -			return -ENOMEM;
> -		}
> -
>  		skb_put(sleep_cfm_tmp, sizeof(struct mwifiex_opt_sleep_confirm)
>  			+ MWIFIEX_TYPE_LEN);
>  		put_unaligned_le32(MWIFIEX_USB_TYPE_CMD, sleep_cfm_tmp->data);
> -- 
> 2.31.1
> 

This looks fine, I'll drop this revert.

greg k-h

Patch
diff mbox series

diff --git a/drivers/net/wireless/marvell/mwifiex/cmdevt.c b/drivers/net/wireless/marvell/mwifiex/cmdevt.c
index 3a11342a6bde..bda8a236e386 100644
--- a/drivers/net/wireless/marvell/mwifiex/cmdevt.c
+++ b/drivers/net/wireless/marvell/mwifiex/cmdevt.c
@@ -339,12 +339,6 @@  static int mwifiex_dnld_sleep_confirm_cmd(struct mwifiex_adapter *adapter)
 		sleep_cfm_tmp =
 			dev_alloc_skb(sizeof(struct mwifiex_opt_sleep_confirm)
 				      + MWIFIEX_TYPE_LEN);
-		if (!sleep_cfm_tmp) {
-			mwifiex_dbg(adapter, ERROR,
-				    "SLEEP_CFM: dev_alloc_skb failed\n");
-			return -ENOMEM;
-		}
-
 		skb_put(sleep_cfm_tmp, sizeof(struct mwifiex_opt_sleep_confirm)
 			+ MWIFIEX_TYPE_LEN);
 		put_unaligned_le32(MWIFIEX_USB_TYPE_CMD, sleep_cfm_tmp->data);