* [dpdk-dev] [PATCH] bus/vmbus: fix resource leak on error
@ 2019-04-17 18:45 Stephen Hemminger
2019-04-17 18:45 ` Stephen Hemminger
2019-04-22 12:43 ` Thomas Monjalon
0 siblings, 2 replies; 4+ messages in thread
From: Stephen Hemminger @ 2019-04-17 18:45 UTC (permalink / raw)
To: dev; +Cc: Stephen Hemminger, Stephen Hemminger
If secondary process attempt to mmap the resource resulted in
the wrong address, then it would leave behind the bad mmap.
Coverity issue: 337675, 337664
Signed-off-by: Stephen Hemminger <sthemmin@microsoft.com>
---
drivers/bus/vmbus/linux/vmbus_uio.c | 4 +++-
drivers/bus/vmbus/vmbus_common_uio.c | 4 +++-
2 files changed, 6 insertions(+), 2 deletions(-)
diff --git a/drivers/bus/vmbus/linux/vmbus_uio.c b/drivers/bus/vmbus/linux/vmbus_uio.c
index fb60ee126d9b..be6b677f99d0 100644
--- a/drivers/bus/vmbus/linux/vmbus_uio.c
+++ b/drivers/bus/vmbus/linux/vmbus_uio.c
@@ -283,10 +283,12 @@ vmbus_uio_map_secondary_subchan(const struct rte_vmbus_device *dev,
if (mapaddr == MAP_FAILED)
VMBUS_LOG(ERR,
"mmap subchan %u in secondary failed", chan->relid);
- else
+ else {
VMBUS_LOG(ERR,
"mmap subchan %u in secondary address mismatch",
chan->relid);
+ vmbus_unmap_resource(mapaddr, 2 * ring_size);
+ }
return -1;
}
diff --git a/drivers/bus/vmbus/vmbus_common_uio.c b/drivers/bus/vmbus/vmbus_common_uio.c
index 1aa5cb2e4b92..8e476f2eaf8b 100644
--- a/drivers/bus/vmbus/vmbus_common_uio.c
+++ b/drivers/bus/vmbus/vmbus_common_uio.c
@@ -75,9 +75,11 @@ vmbus_uio_map_secondary(struct rte_vmbus_device *dev)
if (mapaddr == MAP_FAILED)
VMBUS_LOG(ERR,
"mmap resource %d in secondary failed", i);
- else
+ else {
VMBUS_LOG(ERR,
"mmap resource %d address mismatch", i);
+ vmbus_unmap_resource(mapaddr, uio_res->maps[i].size);
+ }
close(fd);
return -1;
--
2.20.1
^ permalink raw reply [flat|nested] 4+ messages in thread* [dpdk-dev] [PATCH] bus/vmbus: fix resource leak on error
2019-04-17 18:45 [dpdk-dev] [PATCH] bus/vmbus: fix resource leak on error Stephen Hemminger
@ 2019-04-17 18:45 ` Stephen Hemminger
2019-04-22 12:43 ` Thomas Monjalon
1 sibling, 0 replies; 4+ messages in thread
From: Stephen Hemminger @ 2019-04-17 18:45 UTC (permalink / raw)
To: dev; +Cc: Stephen Hemminger, Stephen Hemminger
If secondary process attempt to mmap the resource resulted in
the wrong address, then it would leave behind the bad mmap.
Coverity issue: 337675, 337664
Signed-off-by: Stephen Hemminger <sthemmin@microsoft.com>
---
drivers/bus/vmbus/linux/vmbus_uio.c | 4 +++-
drivers/bus/vmbus/vmbus_common_uio.c | 4 +++-
2 files changed, 6 insertions(+), 2 deletions(-)
diff --git a/drivers/bus/vmbus/linux/vmbus_uio.c b/drivers/bus/vmbus/linux/vmbus_uio.c
index fb60ee126d9b..be6b677f99d0 100644
--- a/drivers/bus/vmbus/linux/vmbus_uio.c
+++ b/drivers/bus/vmbus/linux/vmbus_uio.c
@@ -283,10 +283,12 @@ vmbus_uio_map_secondary_subchan(const struct rte_vmbus_device *dev,
if (mapaddr == MAP_FAILED)
VMBUS_LOG(ERR,
"mmap subchan %u in secondary failed", chan->relid);
- else
+ else {
VMBUS_LOG(ERR,
"mmap subchan %u in secondary address mismatch",
chan->relid);
+ vmbus_unmap_resource(mapaddr, 2 * ring_size);
+ }
return -1;
}
diff --git a/drivers/bus/vmbus/vmbus_common_uio.c b/drivers/bus/vmbus/vmbus_common_uio.c
index 1aa5cb2e4b92..8e476f2eaf8b 100644
--- a/drivers/bus/vmbus/vmbus_common_uio.c
+++ b/drivers/bus/vmbus/vmbus_common_uio.c
@@ -75,9 +75,11 @@ vmbus_uio_map_secondary(struct rte_vmbus_device *dev)
if (mapaddr == MAP_FAILED)
VMBUS_LOG(ERR,
"mmap resource %d in secondary failed", i);
- else
+ else {
VMBUS_LOG(ERR,
"mmap resource %d address mismatch", i);
+ vmbus_unmap_resource(mapaddr, uio_res->maps[i].size);
+ }
close(fd);
return -1;
--
2.20.1
^ permalink raw reply [flat|nested] 4+ messages in thread* Re: [dpdk-dev] [PATCH] bus/vmbus: fix resource leak on error
2019-04-17 18:45 [dpdk-dev] [PATCH] bus/vmbus: fix resource leak on error Stephen Hemminger
2019-04-17 18:45 ` Stephen Hemminger
@ 2019-04-22 12:43 ` Thomas Monjalon
2019-04-22 12:43 ` Thomas Monjalon
1 sibling, 1 reply; 4+ messages in thread
From: Thomas Monjalon @ 2019-04-22 12:43 UTC (permalink / raw)
To: Stephen Hemminger; +Cc: dev, Stephen Hemminger
17/04/2019 20:45, Stephen Hemminger:
> If secondary process attempt to mmap the resource resulted in
> the wrong address, then it would leave behind the bad mmap.
>
> Coverity issue: 337675, 337664
> Signed-off-by: Stephen Hemminger <sthemmin@microsoft.com>
Fixes: 2a28a502c607 ("bus/vmbus: map ring in secondary process")
Applied, thanks
^ permalink raw reply [flat|nested] 4+ messages in thread* Re: [dpdk-dev] [PATCH] bus/vmbus: fix resource leak on error
2019-04-22 12:43 ` Thomas Monjalon
@ 2019-04-22 12:43 ` Thomas Monjalon
0 siblings, 0 replies; 4+ messages in thread
From: Thomas Monjalon @ 2019-04-22 12:43 UTC (permalink / raw)
To: Stephen Hemminger; +Cc: dev, Stephen Hemminger
17/04/2019 20:45, Stephen Hemminger:
> If secondary process attempt to mmap the resource resulted in
> the wrong address, then it would leave behind the bad mmap.
>
> Coverity issue: 337675, 337664
> Signed-off-by: Stephen Hemminger <sthemmin@microsoft.com>
Fixes: 2a28a502c607 ("bus/vmbus: map ring in secondary process")
Applied, thanks
^ permalink raw reply [flat|nested] 4+ messages in thread
end of thread, other threads:[~2019-04-22 12:43 UTC | newest]
Thread overview: 4+ messages (download: mbox.gz / follow: Atom feed)
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2019-04-17 18:45 [dpdk-dev] [PATCH] bus/vmbus: fix resource leak on error Stephen Hemminger
2019-04-17 18:45 ` Stephen Hemminger
2019-04-22 12:43 ` Thomas Monjalon
2019-04-22 12:43 ` Thomas Monjalon
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