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authorRoland Dreier <roland@purestorage.com>2011-12-06 10:47:37 -0800
committerGreg Kroah-Hartman <gregkh@suse.de>2012-01-06 14:17:01 -0800
commit8b6984422659dd49fdbf9ef3c829bd2bb3798053 (patch)
tree21ce91055494b5b33046ae9e44aed311885803d6 /kernel
parent2c141bbe1ddfb7f91749af4411f884125ea6e14e (diff)
IB/mlx4: Fix shutdown crash accessing a non-existent bitmap
commit 4af3ce0de0c12e5c17811eaefad36ab8e146c0fd upstream. Commit cfcde11c3d7a ("IB/mlx4: Use flow counters on IBoE ports") added code that sets elements of counters[] to -1 if no counter is allocated, but then goes ahead and passes every entry to mlx4_counter_free() on shutdown. This is a bad idea, especially if MLX4_DEV_CAP_FLAG_COUNTERS isn't set so there isn't even an underlying bitmap to free from. Tested-by: Sean Hefty <sean.hefty@intel.com> Signed-off-by: Roland Dreier <roland@purestorage.com> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Diffstat (limited to 'kernel')
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