ixgbe: handle close/suspend race with netif_device_detach/present

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When an interface is part of a namespace it is possible that
ixgbe_close() may be called while __ixgbe_shutdown() is running
which ends up in a double free WARN and/or a BUG in free_msi_irqs().

To handle this situation we extend the rtnl_lock() to protect the
call to netif_device_detach() and ixgbe_clear_interrupt_scheme()
in __ixgbe_shutdown() and check for netif_device_present()
to avoid clearing the interrupts second time in ixgbe_close();

Also extend the rtnl lock in ixgbe_resume() to netif_device_attach().

Signed-off-by: Emil Tantilov <emil.s.tantilov@intel.com>
Tested-by: Andrew Bowers <andrewx.bowers@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>

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Emil Tantilov 2016-11-11 10:07:47 -08:00 • committed by Jeff Kirsher

parent f215266470

commit f7f37e7ff2

1 changed files with 8 additions and 9 deletions

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drivers/net/ethernet/intel/ixgbe/ixgbe_main.c

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