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From 63d6271b0ed420fe4ef986209ea71fda23e7795a Mon Sep 17 00:00:00 2001
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Message-Id: <63d6271b0ed420fe4ef986209ea71fda23e7795a@dist-git>
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From: Erik Skultety <eskultet@redhat.com>
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Date: Mon, 18 Nov 2019 15:18:11 +0100
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Subject: [PATCH] qemu: Fix NULL ptr dereference caused by
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qemuDomainDefFormatBufInternal
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qemuDomainDefFormatBufInternal function wasn't testing whether the CPU
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was actually defined in the XML and saving such a domain resulted in the
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following backtrace:
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0 in qemuDomainMakeCPUMigratable (cpu=0x0)
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1 in qemuDomainDefFormatBufInternal()
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2 in qemuDomainDefFormatXMLInternal()
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3 in qemuDomainDefFormatLive()
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4 in qemuDomainSaveInternal()
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5 in qemuDomainSaveFlags()
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6 in qemuDomainSave()
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7 in virDomainSave()
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Signed-off-by: Erik Skultety <eskultet@redhat.com>
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Reviewed-by: Daniel Henrique Barboza <danielhb413@gmail.com>
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(cherry picked from commit 2816fe2e846ab3bd2bfbef123c426a17f1e1df98)
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https://bugzilla.redhat.com/show_bug.cgi?id=1749672
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https://bugzilla.redhat.com/show_bug.cgi?id=1756156
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https://bugzilla.redhat.com/show_bug.cgi?id=1721608
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Signed-off-by: Jiri Denemark <jdenemar@redhat.com>
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Message-Id: <bfa9a6fe0d0cb0ea7ccfa3270c3eaed47d206cb0.1574086659.git.jdenemar@redhat.com>
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Reviewed-by: Michal Privoznik <mprivozn@redhat.com>
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---
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src/qemu/qemu_domain.c | 2 +-
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1 file changed, 1 insertion(+), 1 deletion(-)
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diff --git a/src/qemu/qemu_domain.c b/src/qemu/qemu_domain.c
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index f45d7d427e..6b867ad669 100644
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--- a/src/qemu/qemu_domain.c
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+++ b/src/qemu/qemu_domain.c
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@@ -7543,7 +7543,7 @@ qemuDomainDefFormatBufInternal(virQEMUDriverPtr driver,
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goto cleanup;
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}
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- if (qemuDomainMakeCPUMigratable(def->cpu) < 0)
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+ if (def->cpu && qemuDomainMakeCPUMigratable(def->cpu) < 0)
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goto cleanup;
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}
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--
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2.24.0
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