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firewire: fix memory leak of fw_request instances
Found and debugged by Jay Fenlason <fenlason@redhat.com>. The bug was especially noticeable with direct I/O over fw-sbp2. Signed-off-by: Stefan Richter <stefanr@s5r6.in-berlin.de> Signed-off-by: Kristian Høgsberg <krh@redhat.com>
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2 changed files with 7 additions and 1 deletions
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@ -605,8 +605,10 @@ fw_send_response(struct fw_card *card, struct fw_request *request, int rcode)
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* check is sufficient to ensure we don't send response to
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* broadcast packets or posted writes.
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*/
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if (request->ack != ACK_PENDING)
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if (request->ack != ACK_PENDING) {
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kfree(request);
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return;
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}
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if (rcode == RCODE_COMPLETE)
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fw_fill_response(&request->response, request->request_header,
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@ -123,6 +123,10 @@ typedef void (*fw_transaction_callback_t)(struct fw_card *card, int rcode,
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size_t length,
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void *callback_data);
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/*
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* Important note: The callback must guarantee that either fw_send_response()
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* or kfree() is called on the @request.
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*/
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typedef void (*fw_address_callback_t)(struct fw_card *card,
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struct fw_request *request,
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int tcode, int destination, int source,
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