Re: [PATCH] cifs: Possible slab memory corruption while updating extended stats (repost)

[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

 



On Thu,  3 Feb 2011 14:31:18 -0600
shirishpargaonkar@xxxxxxxxx wrote:

> From: Shirish Pargaonkar <shirishpargaonkar@xxxxxxxxx>
> 
> 
> Updating extended statistics here can cause slab memory corruption
> if a callback function frees slab memory (mid_entry).
> 
> 
> Signed-off-by: Shirish Pargaonkar <shirishpargaonkar@xxxxxxxxx>
> ---
>  fs/cifs/connect.c |    4 ++--
>  1 files changed, 2 insertions(+), 2 deletions(-)
> 
> diff --git a/fs/cifs/connect.c b/fs/cifs/connect.c
> index 945b220..1f32a28 100644
> --- a/fs/cifs/connect.c
> +++ b/fs/cifs/connect.c
> @@ -633,11 +633,11 @@ incomplete_rcv:
>  				mid_entry->largeBuf = isLargeBuf;
>  multi_t2_fnd:
>  				mid_entry->midState = MID_RESPONSE_RECEIVED;
> -				list_del_init(&mid_entry->qhead);
> -				mid_entry->callback(mid_entry);
>  #ifdef CONFIG_CIFS_STATS2
>  				mid_entry->when_received = jiffies;
>  #endif
> +				list_del_init(&mid_entry->qhead);
> +				mid_entry->callback(mid_entry);
>  				break;
>  			}
>  			mid_entry = NULL;

Looks good.

Reviewed-by: Jeff Layton <jlayton@xxxxxxxxxx>
--
To unsubscribe from this list: send the line "unsubscribe linux-cifs" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at  http://vger.kernel.org/majordomo-info.html


[Linux USB Devel]     [Video for Linux]     [Linux Audio Users]     [Yosemite News]     [Linux Kernel]     [Linux SCSI]

  Powered by Linux