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firewire: sbp2: fix freeing of unallocated memory 

If a target writes invalid status (typically status of a command that
already timed out), firewire-sbp2 attempts to put away an ORB that
doesn't exist.  https://bugzilla.redhat.com/show_bug.cgi?id=519772

Signed-off-by: Stefan Richter <stefanr@s5r6.in-berlin.de>
This commit is contained in:
Stefan Richter 2009-09-03 23:07:35 +02:00
parent 4fe0badd58
commit baed6b82d9
1 changed files with 4 additions and 4 deletions
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8
drivers/firewire/sbp2.c
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@ -456,12 +456,12 @@ static void sbp2_status_write(struct fw_card *card, struct fw_request *request,
} }
spin_unlock_irqrestore(&card->lock, flags); spin_unlock_irqrestore(&card->lock, flags);
if (&orb->link != &lu->orb_list) if (&orb->link != &lu->orb_list) {
orb->callback(orb, &status); orb->callback(orb, &status);
else
fw_error("status write for unknown orb\n");
kref_put(&orb->kref, free_orb); kref_put(&orb->kref, free_orb);
} else {
fw_error("status write for unknown orb\n");
}
fw_send_response(card, request, RCODE_COMPLETE); fw_send_response(card, request, RCODE_COMPLETE);
} }