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| author | Andi Kleen <ak@linux.intel.com> | 2013-09-30 13:29:08 -0700 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2013-10-02 16:31:48 -0400 |
| commit | 58e4e1f6cacddb7823c44bcfb272174553f6c645 (patch) | |
| tree | e049258977c26dabda0eb8824fa3f63788493968 /net/ipv4 | |
| parent | 52f77ba9256bc9dc0f7e6b37b03d00553e903d15 (diff) | |
| download | blackbird-op-linux-58e4e1f6cacddb7823c44bcfb272174553f6c645.tar.gz blackbird-op-linux-58e4e1f6cacddb7823c44bcfb272174553f6c645.zip | |
igb: Avoid uninitialized advertised variable in eee_set_cur
eee_get_cur assumes that the output data is already zeroed. It can
read-modify-write the advertised field:
if (ipcnfg & E1000_IPCNFG_EEE_100M_AN)
2594 edata->advertised |= ADVERTISED_100baseT_Full;
This is ok for the normal ethtool eee_get call, which always
zeroes the input data before.
But eee_set_cur also calls eee_get_cur and it did not zero the input
field. Later on it then compares agsinst the field, which can contain partial
stack garbage.
Zero the input field in eee_set_cur() too.
Cc: jeffrey.t.kirsher@intel.com
Cc: netdev@vger.kernel.org
Signed-off-by: Andi Kleen <ak@linux.intel.com>
Acked-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net/ipv4')
0 files changed, 0 insertions, 0 deletions
