diff options
| author | Vinicius Costa Gomes <vinicius.gomes@intel.com> | 2021-05-13 17:31:04 -0700 |
|---|---|---|
| committer | Tony Nguyen <anthony.l.nguyen@intel.com> | 2021-07-01 10:53:04 -0700 |
| commit | 7b292608db23ccbbfbfa50cdb155d01725d7a52e (patch) | |
| tree | aaf9e657a3986864c24fe0d29854ff9eb2eefefe /drivers/net/ethernet/intel/igc/igc.h | |
| parent | 56ea7ed103b46970e171eb1c95916f393d64eeff (diff) | |
igb: Fix use-after-free error during reset
Cleans the next descriptor to watch (next_to_watch) when cleaning the
TX ring.
Failure to do so can cause invalid memory accesses. If igb_poll() runs
while the controller is reset this can lead to the driver try to free
a skb that was already freed.
(The crash is harder to reproduce with the igb driver, but the same
potential problem exists as the code is identical to igc)
Fixes: 7cc6fd4c60f2 ("igb: Don't bother clearing Tx buffer_info in igb_clean_tx_ring")
Signed-off-by: Vinicius Costa Gomes <vinicius.gomes@intel.com>
Reported-by: Erez Geva <erez.geva.ext@siemens.com>
Tested-by: Tony Brelinski <tonyx.brelinski@intel.com>
Signed-off-by: Tony Nguyen <anthony.l.nguyen@intel.com>
Diffstat (limited to 'drivers/net/ethernet/intel/igc/igc.h')
0 files changed, 0 insertions, 0 deletions