6:54 a.m.
Don't free individual JSON array members as the array will be freed at
the end. This may potentially lead to a crash although it didn't crash
on my setup.
---
src/network/bridge_driver.c | 4 +---
1 file changed, 1 insertion(+), 3 deletions(-)
diff --git a/src/network/bridge_driver.c b/src/network/bridge_driver.c
index d5577e0..f3aff1c 100644
--- a/src/network/bridge_driver.c
+++ b/src/network/bridge_driver.c
@@ -3437,10 +3437,8 @@ networkGetDHCPLeasesHelper(virNetworkObjPtr obj,
goto error;
}
- if (mac && virMacAddrCompare(mac, mac_tmp)) {
- virJSONValueFree(lease_tmp);
+ if (mac && virMacAddrCompare(mac, mac_tmp))
continue;
- }
if (virJSONValueObjectGetNumberLong(lease_tmp, "expiry-time",
&expirytime_tmp) < 0) {
/* A lease cannot be present without expiry-time */
--
1.9.3
7:06 a.m.
On 06/24/14 13:54, Peter Krempa wrote:
Don't free individual JSON array members as the array will be
freed at
the end. This may potentially lead to a crash although it didn't crash
on my setup.
---
src/network/bridge_driver.c | 4 +---
1 file changed, 1 insertion(+), 3 deletions(-)
It crashed now in valgrind:
==2487543== Process terminating with default action of signal 11 (SIGSEGV): dumping core
==2487543== Access not within mapped region at address 0x0
==2487543== at 0x52ADAF7: virFree (viralloc.c:582)
==2487543== by 0x52E76D3: virJSONValueFree (virjson.c:76)
==2487543== by 0x52E773F: virJSONValueFree (virjson.c:83)
==2487543== by 0x1317A8F8: networkGetDHCPLeasesHelper (bridge_driver.c:3533)
==2487543== by 0x1317ABFE: networkGetDHCPLeasesForMAC (bridge_driver.c:3586)
==2487543== by 0x541D2E1: virNetworkGetDHCPLeasesForMAC (libvirt.c:21154)
==2487543== by 0x159082: remoteDispatchNetworkGetDHCPLeasesForMAC (remote.c:6347)
==2487543== by 0x13D0B7: remoteDispatchNetworkGetDHCPLeasesForMACHelper
(remote_dispatch.h:10355)
==2487543== by 0x547B0D1: virNetServerProgramDispatchCall (virnetserverprogram.c:437)
==2487543== by 0x547AC2E: virNetServerProgramDispatch (virnetserverprogram.c:307)
==2487543== by 0x170443: virNetServerProcessMsg (virnetserver.c:172)
==2487543== by 0x170529: virNetServerHandleJob (virnetserver.c:193)
I was apparently lucky before and the pointers mapped to memory that was still mapped.
Peter
7:23 a.m.
On Tue, Jun 24, 2014 at 01:54:42PM +0200, Peter Krempa wrote:
Don't free individual JSON array members as the array will be
freed at
the end. This may potentially lead to a crash although it didn't crash
on my setup.
---
src/network/bridge_driver.c | 4 +---
1 file changed, 1 insertion(+), 3 deletions(-)
diff --git a/src/network/bridge_driver.c b/src/network/bridge_driver.c
index d5577e0..f3aff1c 100644
--- a/src/network/bridge_driver.c
+++ b/src/network/bridge_driver.c
@@ -3437,10 +3437,8 @@ networkGetDHCPLeasesHelper(virNetworkObjPtr obj,
goto error;
}
- if (mac && virMacAddrCompare(mac, mac_tmp)) {
- virJSONValueFree(lease_tmp);
+ if (mac && virMacAddrCompare(mac, mac_tmp))
continue;
- }
if (virJSONValueObjectGetNumberLong(lease_tmp, "expiry-time",
&expirytime_tmp) < 0) {
/* A lease cannot be present without expiry-time */
ACK
Regards,
Daniel
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8:20 a.m.
On 06/24/14 14:23, Daniel P. Berrange wrote:
On Tue, Jun 24, 2014 at 01:54:42PM +0200, Peter Krempa wrote:
> Don't free individual JSON array members as the array will be freed at
> the end. This may potentially lead to a crash although it didn't crash
> on my setup.
> ---
> src/network/bridge_driver.c | 4 +---
> 1 file changed, 1 insertion(+), 3 deletions(-)
>
> diff --git a/src/network/bridge_driver.c b/src/network/bridge_driver.c
> index d5577e0..f3aff1c 100644
> --- a/src/network/bridge_driver.c
> +++ b/src/network/bridge_driver.c
> @@ -3437,10 +3437,8 @@ networkGetDHCPLeasesHelper(virNetworkObjPtr obj,
> goto error;
> }
>
> - if (mac && virMacAddrCompare(mac, mac_tmp)) {
> - virJSONValueFree(lease_tmp);
> + if (mac && virMacAddrCompare(mac, mac_tmp))
> continue;
> - }
>
> if (virJSONValueObjectGetNumberLong(lease_tmp, "expiry-time",
&expirytime_tmp) < 0) {
> /* A lease cannot be present without expiry-time */
ACK
Pushed; Thanks.
Peter
3804
days inactive
3804
days old
3 comments
2 participants
participants (2)
-
Daniel P. Berrange -
Peter Krempa