i40e: warn on double free

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Down was requesting queue disables, but then exited immediately without
waiting for the queues to actually disable. This could allow any
function called after i40evf_down to run immediately, including
i40evf_up, and causes a memory leak.

This issue has been fixed in a recent refactor of the reset code, but
add a couple WARN_ONs in the slow path to help us recognize if we
reintroduce this issue or if we missed any cases.

Change-ID: I27b6b5c9a79c1892f0ba453129f116bc32647dd0
Signed-off-by: Jesse Brandeburg <jesse.brandeburg@intel.com>
Signed-off-by: Mitch Williams <mitch.a.williams@intel.com>
Tested-by: Andrew Bowers <andrewx.bowers@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>

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Jesse Brandeburg 2015-07-23 16:54:42 -04:00 • committed by Jeff Kirsher

parent 7845548de7

commit e908f81562

1 changed files with 4 additions and 0 deletions

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4

drivers/net/ethernet/intel/i40e/i40e_txrx.c

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