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    SubjectRe: [PATCH] rt2x00: rt2800: fix zeroing skb structure


    On Sat, 30 Jul 2011, Stanislaw Gruszka wrote:

    > We should clear skb->data not skb itself. Bug was introduced by:
    > commit 0b8004aa12d13ec750d102ba4082a95f0107c649 "rt2x00: Properly
    > reserve room for descriptors in skbs".
    >
    > Cc: stable@kernel.org # 2.6.36+
    > Signed-off-by: Stanislaw Gruszka <sgruszka@redhat.com>
    > ---
    > drivers/net/wireless/rt2x00/rt2800lib.c | 3 +--
    > 1 files changed, 1 insertions(+), 2 deletions(-)
    >
    > diff --git a/drivers/net/wireless/rt2x00/rt2800lib.c b/drivers/net/wireless/rt2x00/rt2800lib.c
    > index 75d2c6c..f94d669 100644
    > --- a/drivers/net/wireless/rt2x00/rt2800lib.c
    > +++ b/drivers/net/wireless/rt2x00/rt2800lib.c
    > @@ -703,8 +703,7 @@ void rt2800_write_beacon(struct queue_entry *entry, struct txentry_desc *txdesc)
    > /*
    > * Add space for the TXWI in front of the skb.
    > */
    > - skb_push(entry->skb, TXWI_DESC_SIZE);
    > - memset(entry->skb, 0, TXWI_DESC_SIZE);
    > + memset(skb_push(entry->skb, TXWI_DESC_SIZE), 0, TXWI_DESC_SIZE);
    >
    > /*
    > * Register descriptor details in skb frame descriptor.
    > --
    > 1.7.4
    >

    Hi,

    Testing w/ Linux kernel 3.0:

    # patch -p1 < ../patch3
    patching file drivers/net/wireless/rt2x00/rt2800lib.c
    Hunk #1 succeeded at 784 (offset 81 lines).

    Compiled/installed.

    Will reboot shortly, need to run a backup first, thanks.

    Justin.



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