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remote_page_fault(): free remote PF response packet to avoid memory leak

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This commit is contained in:
Balazs Gerofi
2017-06-12 22:03:12 +09:00
parent 4dfd806aa7
commit 1f006b2381
1 changed files with 8 additions and 0 deletions
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8
executer/kernel/mcctrl/syscall.c
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@ -281,6 +281,7 @@ static int __notify_syscall_requester(ihk_os_t os, struct ikc_scd_packet *packet
static int remote_page_fault(struct mcctrl_usrdata *usrdata, void *fault_addr, uint64_t reason) static int remote_page_fault(struct mcctrl_usrdata *usrdata, void *fault_addr, uint64_t reason)
{ {
struct ikc_scd_packet *packet; struct ikc_scd_packet *packet;
struct ikc_scd_packet *free_packet = NULL;
struct syscall_request *req; struct syscall_request *req;
struct syscall_response *resp; struct syscall_response *resp;
int error; int error;
@ -383,6 +384,7 @@ retry_alloc:
else { else {
/* Update packet reference */ /* Update packet reference */
packet = wqhln->packet; packet = wqhln->packet;
free_packet = packet;
req = &packet->req; req = &packet->req;
{ {
unsigned long phys2; unsigned long phys2;
@ -440,6 +442,12 @@ retry_alloc:
kfree(wqhln); kfree(wqhln);
error = 0; error = 0;
out: out:
/* Release remote page-fault response packet */
ihk_ikc_release_packet((struct ihk_ikc_free_packet *)free_packet,
(usrdata->ikc2linux[smp_processor_id()] ?
usrdata->ikc2linux[smp_processor_id()] :
usrdata->ikc2linux[0]));
ihk_device_unmap_virtual(ihk_os_to_dev(usrdata->os), resp, sizeof(*resp)); ihk_device_unmap_virtual(ihk_os_to_dev(usrdata->os), resp, sizeof(*resp));
ihk_device_unmap_memory(ihk_os_to_dev(usrdata->os), phys, sizeof(*resp)); ihk_device_unmap_memory(ihk_os_to_dev(usrdata->os), phys, sizeof(*resp));