lkml.org 
[lkml]   [2021]   [Apr]   [27]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
    /
    Date
    From
    SubjectRe: [PATCH 169/190] Revert "atl1e: checking the status of atl1e_write_phy_reg"
    On Wed, Apr 21, 2021 at 03:00:44PM +0200, Greg Kroah-Hartman wrote:
    > This reverts commit ff07d48d7bc0974d4f96a85a4df14564fb09f1ef.
    >
    > 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: David S. Miller <davem@davemloft.net>
    > Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
    > ---
    > drivers/net/ethernet/atheros/atl1e/atl1e_main.c | 4 +---
    > 1 file changed, 1 insertion(+), 3 deletions(-)
    >
    > diff --git a/drivers/net/ethernet/atheros/atl1e/atl1e_main.c b/drivers/net/ethernet/atheros/atl1e/atl1e_main.c
    > index ff9f96de74b8..85f9cb769e30 100644
    > --- a/drivers/net/ethernet/atheros/atl1e/atl1e_main.c
    > +++ b/drivers/net/ethernet/atheros/atl1e/atl1e_main.c
    > @@ -455,9 +455,7 @@ static void atl1e_mdio_write(struct net_device *netdev, int phy_id,
    > {
    > struct atl1e_adapter *adapter = netdev_priv(netdev);
    >
    > - if (atl1e_write_phy_reg(&adapter->hw,
    > - reg_num & MDIO_REG_ADDR_MASK, val))
    > - netdev_err(netdev, "write phy register failed\n");
    > + atl1e_write_phy_reg(&adapter->hw, reg_num & MDIO_REG_ADDR_MASK, val);
    > }
    >
    > static int atl1e_mii_ioctl(struct net_device *netdev,
    > --
    > 2.31.1
    >

    The original change here is a mess, what is a user supposed to do if
    this call fails? I will revert it and properly pass the error value up
    to the callers, as that is the correct thing to do here, not paper over
    the issue with a commit message that claims this change "fixes"
    anything.

    thanks,

    greg k-h

    \
     
     \ /
      Last update: 2021-04-27 20:14    [W:4.016 / U:0.368 seconds]
    ©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site