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authorDavid Vrabel <david.vrabel@citrix.com>2014-09-02 10:21:30 -0400
committerDavid Vrabel <david.vrabel@citrix.com>2014-09-04 08:14:05 -0400
commit5903c6bd1a48d90b99e207ec2a6a7673cbbb732d (patch)
treef9e12fe0547957d77ca1c803da954999741794ae /drivers/net/wireless/ath/ath9k/pci.c
parente9de2e5fd602c4f5ddf212d3837b19ad4f5878ad (diff)
xen/gntalloc: safely delete grefs in add_grefs() undo path
If a gref could not be added (perhaps because the limit has been reached or there are no more grant references available), the undo path may crash because __del_gref() frees the gref while it is being used for a list iteration. A comment suggests that using list_for_each_entry() is safe since the gref isn't removed from the list being iterated over, but it is freed and thus list_for_each_entry_safe() must be used. Also, explicitly delete the gref from the local per-file list, even though this is not strictly necessary. Signed-off-by: David Vrabel <david.vrabel@citrix.com> Reviewed-by: Boris Ostrovsky <boris.ostrovsky@oracle.com>
Diffstat (limited to 'drivers/net/wireless/ath/ath9k/pci.c')
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