[034/190] Revert "efi/esrt: Fix reference count leak in esre_create_sysfs_entry."
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Message ID 20210421130105.1226686-35-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 KH April 21, 2021, 12:58 p.m. UTC
This reverts commit 4ddf4739be6e375116c375f0a68bf3893ffcee21.

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: Qiushi Wu <wu000273@umn.edu>
Cc: https
Cc: Ard Biesheuvel <ardb@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
 drivers/firmware/efi/esrt.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

Comments

Greg KH April 27, 2021, 4:39 p.m. UTC | #1
On Wed, Apr 21, 2021 at 02:58:29PM +0200, Greg Kroah-Hartman wrote:
> This reverts commit 4ddf4739be6e375116c375f0a68bf3893ffcee21.
> 
> 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: Qiushi Wu <wu000273@umn.edu>
> Cc: https
> Cc: Ard Biesheuvel <ardb@kernel.org>
> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
> ---
>  drivers/firmware/efi/esrt.c | 2 +-
>  1 file changed, 1 insertion(+), 1 deletion(-)
> 
> diff --git a/drivers/firmware/efi/esrt.c b/drivers/firmware/efi/esrt.c
> index d5915272141f..e3d692696583 100644
> --- a/drivers/firmware/efi/esrt.c
> +++ b/drivers/firmware/efi/esrt.c
> @@ -181,7 +181,7 @@ static int esre_create_sysfs_entry(void *esre, int entry_num)
>  		rc = kobject_init_and_add(&entry->kobj, &esre1_ktype, NULL,
>  					  "entry%d", entry_num);
>  		if (rc) {
> -			kobject_put(&entry->kobj);
> +			kfree(entry);
>  			return rc;
>  		}
>  	}
> -- 
> 2.31.1
> 

Looks correct so I'm dropping the revert.

greg k-h
Ard Biesheuvel April 27, 2021, 4:42 p.m. UTC | #2
On Tue, 27 Apr 2021 at 18:39, Greg Kroah-Hartman
<gregkh@linuxfoundation.org> wrote:
>
> On Wed, Apr 21, 2021 at 02:58:29PM +0200, Greg Kroah-Hartman wrote:
> > This reverts commit 4ddf4739be6e375116c375f0a68bf3893ffcee21.
> >
> > 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: Qiushi Wu <wu000273@umn.edu>
> > Cc: https
> > Cc: Ard Biesheuvel <ardb@kernel.org>
> > Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
> > ---
> >  drivers/firmware/efi/esrt.c | 2 +-
> >  1 file changed, 1 insertion(+), 1 deletion(-)
> >
> > diff --git a/drivers/firmware/efi/esrt.c b/drivers/firmware/efi/esrt.c
> > index d5915272141f..e3d692696583 100644
> > --- a/drivers/firmware/efi/esrt.c
> > +++ b/drivers/firmware/efi/esrt.c
> > @@ -181,7 +181,7 @@ static int esre_create_sysfs_entry(void *esre, int entry_num)
> >               rc = kobject_init_and_add(&entry->kobj, &esre1_ktype, NULL,
> >                                         "entry%d", entry_num);
> >               if (rc) {
> > -                     kobject_put(&entry->kobj);
> > +                     kfree(entry);
> >                       return rc;
> >               }
> >       }
> > --
> > 2.31.1
> >
>
> Looks correct so I'm dropping the revert.
>
> greg k-h

Agreed.

Patch
diff mbox series

diff --git a/drivers/firmware/efi/esrt.c b/drivers/firmware/efi/esrt.c
index d5915272141f..e3d692696583 100644
--- a/drivers/firmware/efi/esrt.c
+++ b/drivers/firmware/efi/esrt.c
@@ -181,7 +181,7 @@  static int esre_create_sysfs_entry(void *esre, int entry_num)
 		rc = kobject_init_and_add(&entry->kobj, &esre1_ktype, NULL,
 					  "entry%d", entry_num);
 		if (rc) {
-			kobject_put(&entry->kobj);
+			kfree(entry);
 			return rc;
 		}
 	}