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| author | Yossi Etigin <yosefe@voltaire.com> | 2009-04-21 00:58:08 +0400 |
|---|---|---|
| committer | Roland Dreier <rolandd@cisco.com> | 2009-04-21 00:58:08 +0400 |
| commit | e028cc55cc5c90a1c57eefe560a0cbb4df1fed14 (patch) | |
| tree | b1ef203c107a4589536a089737ae550e0b18451b /drivers/infiniband/hw | |
| parent | a939b96cccdb65df80a52447ec8e4a6d79c56dbb (diff) | |
| download | linux-e028cc55cc5c90a1c57eefe560a0cbb4df1fed14.tar.xz | |
IPoIB: Disable NAPI while CQ is being drained
If NAPI is enabled while IPoIB's CQ is being drained, it creates a
race on priv->ibwc between ipoib_poll() and ipoib_drain_cq(), leading
to memory corruption.
The solution is to enable/disable NAPI in ipoib_ib_dev_{open/stop}()
instead of in ipoib_{open/stop}(), and sync NAPI on the INITIALIZED
flag instead on the ADMIN_UP flag. This way NAPI will be disabled when
ipoib_drain_cq() is called.
This fixes <https://bugs.openfabrics.org/show_bug.cgi?id=1587>.
Signed-off-by: Yossi Etigin <yosefe@voltaire.com>
Signed-off-by: Roland Dreier <rolandd@cisco.com>
Diffstat (limited to 'drivers/infiniband/hw')
0 files changed, 0 insertions, 0 deletions