diff --git a/0003-virpci-Resolve-leak-in-virPCIVirtualFunctionList-cle.patch b/0003-virpci-Resolve-leak-in-virPCIVirtualFunctionList-cle.patch new file mode 100644 index 0000000..babe037 --- /dev/null +++ b/0003-virpci-Resolve-leak-in-virPCIVirtualFunctionList-cle.patch @@ -0,0 +1,51 @@ +From 6425a311b8ad19d6f9c0b315bf1d722551ea3585 Mon Sep 17 00:00:00 2001 +From: Tim Shearer +Date: Mon, 1 May 2023 13:15:48 +0000 +Subject: [PATCH] virpci: Resolve leak in virPCIVirtualFunctionList cleanup +MIME-Version: 1.0 +Content-Type: text/plain; charset=UTF-8 +Content-Transfer-Encoding: 8bit + +Repeatedly querying an SR-IOV PCI device's capabilities exposes a +memory leak caused by a failure to free the virPCIVirtualFunction +array within the parent struct's g_autoptr cleanup. + +Valgrind output after getting a single interface's XML description +1000 times: + +==325982== 256,000 bytes in 1,000 blocks are definitely lost in loss record 2,634 of 2,635 +==325982== at 0x4C3C096: realloc (vg_replace_malloc.c:1437) +==325982== by 0x59D952D: g_realloc (in /usr/lib64/libglib-2.0.so.0.5600.4) +==325982== by 0x4EE1F52: virReallocN (viralloc.c:52) +==325982== by 0x4EE1FB7: virExpandN (viralloc.c:78) +==325982== by 0x4EE219A: virInsertElementInternal (viralloc.c:183) +==325982== by 0x4EE23B2: virAppendElement (viralloc.c:288) +==325982== by 0x4F65D85: virPCIGetVirtualFunctionsFull (virpci.c:2389) +==325982== by 0x4F65753: virPCIGetVirtualFunctions (virpci.c:2256) +==325982== by 0x505CB75: virNodeDeviceGetPCISRIOVCaps (node_device_conf.c:2969) +==325982== by 0x505D181: virNodeDeviceGetPCIDynamicCaps (node_device_conf.c:3099) +==325982== by 0x505BC4E: virNodeDeviceUpdateCaps (node_device_conf.c:2677) +==325982== by 0x260FCBB2: nodeDeviceGetXMLDesc (node_device_driver.c:355) + +Signed-off-by: Tim Shearer +Reviewed-by: Ján Tomko +Signed-off-by: Han Han +--- + src/util/virpci.c | 1 + + 1 file changed, 1 insertion(+) + +diff --git a/src/util/virpci.c b/src/util/virpci.c +index 9e564e4a4f..cc2b07bbba 100644 +--- a/src/util/virpci.c ++++ b/src/util/virpci.c +@@ -2245,6 +2245,7 @@ virPCIVirtualFunctionListFree(virPCIVirtualFunctionList *list) + g_free(list->functions[i].ifname); + } + ++ g_free(list->functions); + g_free(list); + } + +-- +2.41.0 +