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authorFeras Daoud <ferasda@mellanox.com>2016-12-28 14:47:28 +0200
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>2017-11-15 15:53:16 +0100
commitd369bba84410d7c141226bfbbdd2c7be5d97d8f9 (patch)
treefa118dbe3dfa5eff3bf55a0e13812c01b1cf4ade /drivers/infiniband
parent8b93cbd12547f5cc01b676d3316342b7ffc7061f (diff)
IB/ipoib: Change list_del to list_del_init in the tx object
[ Upstream commit 27d41d29c7f093f6f77843624fbb080c1b4a8b9c ] Since ipoib_cm_tx_start function and ipoib_cm_tx_reap function belong to different work queues, they can run in parallel. In this case if ipoib_cm_tx_reap calls list_del and release the lock, ipoib_cm_tx_start may acquire it and call list_del_init on the already deleted object. Changing list_del to list_del_init in ipoib_cm_tx_reap fixes the problem. Fixes: 839fcaba355a ("IPoIB: Connected mode experimental support") Signed-off-by: Feras Daoud <ferasda@mellanox.com> Signed-off-by: Erez Shitrit <erezsh@mellanox.com> Reviewed-by: Alex Vesker <valex@mellanox.com> Signed-off-by: Leon Romanovsky <leon@kernel.org> Reviewed-by: Yuval Shaia <yuval.shaia@oracle.com> Signed-off-by: Doug Ledford <dledford@redhat.com> Signed-off-by: Sasha Levin <alexander.levin@verizon.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers/infiniband')
-rw-r--r--drivers/infiniband/ulp/ipoib/ipoib_cm.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/drivers/infiniband/ulp/ipoib/ipoib_cm.c b/drivers/infiniband/ulp/ipoib/ipoib_cm.c
index 0616a65f0d78..75761667be59 100644
--- a/drivers/infiniband/ulp/ipoib/ipoib_cm.c
+++ b/drivers/infiniband/ulp/ipoib/ipoib_cm.c
@@ -1392,7 +1392,7 @@ static void ipoib_cm_tx_reap(struct work_struct *work)
while (!list_empty(&priv->cm.reap_list)) {
p = list_entry(priv->cm.reap_list.next, typeof(*p), list);
- list_del(&p->list);
+ list_del_init(&p->list);
spin_unlock_irqrestore(&priv->lock, flags);
netif_tx_unlock_bh(dev);
ipoib_cm_tx_destroy(p);