linux-hardened/drivers/infiniband
Sebastian Andrzej Siewior 112f5c8199 IB/ipoib: replace local_irq_disable() with proper locking
In ipoib_mcast_restart_task() the netif_addr_lock() is invoked prior
local_irq_save(). netif_addr_lock() should not be invoked in interrupt disabled
section, only in BH disabled sections.
The priv->lock is always acquired with disabled interrupts. The only place
where netif_addr_lock() and priv->lock nest ist ipoib_mcast_restart_task().

Drop the local_irq_save() and acquire priv->lock with spin_lock_irq() inside
the netif_addr locked section. It's safe to do so because the caller is either
a worker function or __ipoib_ib_dev_flush() which are both calling with
interrupts enabled (and since BH is enabled here, too so
netif_addr_lock_bh() needs to be used).

Cc: Doug Ledford <dledford@redhat.com>
Cc: Jason Gunthorpe <jgg@ziepe.ca>
Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
2018-05-16 21:42:06 -06:00
..
core IB/uverbs: Introduce a MPLS steering match filter 2018-05-16 21:32:55 -06:00
hw IB/mlx5: Expose MPLS related tunneling offloads 2018-05-16 21:32:55 -06:00
sw IB: Fix RDMA_RXE and INFINIBAND_RDMAVT dependencies for DMA_VIRT_OPS 2018-05-15 10:48:16 -04:00
ulp IB/ipoib: replace local_irq_disable() with proper locking 2018-05-16 21:42:06 -06:00
Kconfig IB: make INFINIBAND_ADDR_TRANS configurable 2018-04-27 11:15:44 -04:00
Makefile IB/rdmavt: Create module framework and handle driver registration 2016-03-10 20:37:04 -05:00