i40evf: check for msix_entries null dereference

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It is possible for msix_entries to be freed by a previous suspend/remove
before a VF is closed.  This patch fixes the issue by checking for NULL
before dereferencing msix_entries and returning early in the case where
it is NULL within the i40evf_close code path.  Without this patch it is
possible to trigger a kernel panic through NULL dereference.

Change-ID: I92a2746e82533a889e25f91578eac9abd0388ae2
Signed-off-by: Alan Brady <alan.brady@intel.com>
Tested-by: Andrew Bowers <andrewx.bowers@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>

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Alan Brady 2016-11-08 13:05:05 -08:00 • committed by Jeff Kirsher

parent dedecb6d42

commit 47d2a5d827

1 changed files with 6 additions and 0 deletions

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drivers/net/ethernet/intel/i40evf/i40evf_main.c

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