57 lines
2.2 KiB
Diff
57 lines
2.2 KiB
Diff
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From 0e91f4dc214d01e9d9537b1111ce67010530fd20 Mon Sep 17 00:00:00 2001
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Message-Id: <0e91f4dc214d01e9d9537b1111ce67010530fd20@dist-git>
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From: Tim Shearer <TShearer@adva.com>
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Date: Mon, 1 May 2023 13:15:48 +0000
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Subject: [PATCH] virpci: Resolve leak in virPCIVirtualFunctionList cleanup
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MIME-Version: 1.0
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Content-Type: text/plain; charset=UTF-8
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Content-Transfer-Encoding: 8bit
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Repeatedly querying an SR-IOV PCI device's capabilities exposes a
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memory leak caused by a failure to free the virPCIVirtualFunction
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array within the parent struct's g_autoptr cleanup.
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Valgrind output after getting a single interface's XML description
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1000 times:
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==325982== 256,000 bytes in 1,000 blocks are definitely lost in loss record 2,634 of 2,635
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==325982== at 0x4C3C096: realloc (vg_replace_malloc.c:1437)
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==325982== by 0x59D952D: g_realloc (in /usr/lib64/libglib-2.0.so.0.5600.4)
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==325982== by 0x4EE1F52: virReallocN (viralloc.c:52)
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==325982== by 0x4EE1FB7: virExpandN (viralloc.c:78)
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==325982== by 0x4EE219A: virInsertElementInternal (viralloc.c:183)
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==325982== by 0x4EE23B2: virAppendElement (viralloc.c:288)
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==325982== by 0x4F65D85: virPCIGetVirtualFunctionsFull (virpci.c:2389)
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==325982== by 0x4F65753: virPCIGetVirtualFunctions (virpci.c:2256)
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==325982== by 0x505CB75: virNodeDeviceGetPCISRIOVCaps (node_device_conf.c:2969)
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==325982== by 0x505D181: virNodeDeviceGetPCIDynamicCaps (node_device_conf.c:3099)
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==325982== by 0x505BC4E: virNodeDeviceUpdateCaps (node_device_conf.c:2677)
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==325982== by 0x260FCBB2: nodeDeviceGetXMLDesc (node_device_driver.c:355)
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Signed-off-by: Tim Shearer <tshearer@adva.com>
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Reviewed-by: Ján Tomko <jtomko@redhat.com>
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(cherry picked from commit 6425a311b8ad19d6f9c0b315bf1d722551ea3585)
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https://bugzilla.redhat.com/show_bug.cgi?id=2196351
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https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2023-2700
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Signed-off-by: Ján Tomko <jtomko@redhat.com>
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---
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src/util/virpci.c | 1 +
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1 file changed, 1 insertion(+)
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diff --git a/src/util/virpci.c b/src/util/virpci.c
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index 4949d1a3d4..2714d11a7d 100644
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--- a/src/util/virpci.c
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+++ b/src/util/virpci.c
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@@ -2255,6 +2255,7 @@ virPCIVirtualFunctionListFree(virPCIVirtualFunctionList *list)
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g_free(list->functions[i].ifname);
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}
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+ g_free(list->functions);
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g_free(list);
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}
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--
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2.40.1
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