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| author | Julian Wiedmann <jwi@linux.ibm.com> | 2018-07-19 12:43:48 +0200 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2018-07-21 10:12:29 -0700 |
| commit | a702349a4099cd5a7bab0904689d8e0bf8dcd622 (patch) | |
| tree | 9c4fecc85ff313af8459d3181fedf830d9962114 /drivers/iommu | |
| parent | d528114bd398b4edaeed370a96f874dff88c10f5 (diff) | |
| download | linux-a702349a4099cd5a7bab0904689d8e0bf8dcd622.tar.bz2 | |
s390/qeth: fix race in used-buffer accounting
By updating q->used_buffers only _after_ do_QDIO() has completed, there
is a potential race against the buffer's TX completion. In the unlikely
case that the TX completion path wins, qeth_qdio_output_handler() would
decrement the counter before qeth_flush_buffers() even incremented it.
Signed-off-by: Julian Wiedmann <jwi@linux.ibm.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'drivers/iommu')
0 files changed, 0 insertions, 0 deletions