[libvirt] Re: [PATCH] Fix possible NULL pointer dereference
Daniel Veillard
veillard at redhat.com
Mon Dec 14 13:11:29 UTC 2009
On Mon, Dec 14, 2009 at 12:22:40PM +0100, Paolo Bonzini wrote:
> If there are no references remaining to the object, vm is set to NULL
> and vm->persistent cannot be accessed. Fixed by this trivial patch.
>
> * src/qemu/qemu_driver.c (qemudDomainCoreDump): Avoid possible
> NULL pointer dereference on --crash dump.
> ---
> > Okay, I have pushed the 2 patches, I got a merge error in the
> > cleanup section of the QEmu dump entry point, which I manually
> > applied hope it's fine, I also had to cleanup some TAB used for
> > indentation (hint use "make syntax-check" to catch those),
>
> Here is a little adjustment. Thanks!
>
> src/qemu/qemu_driver.c | 2 +-
> 1 files changed, 1 insertions(+), 1 deletions(-)
>
> diff --git a/src/qemu/qemu_driver.c b/src/qemu/qemu_driver.c
> index 3946c27..faeb838 100644
> --- a/src/qemu/qemu_driver.c
> +++ b/src/qemu/qemu_driver.c
> @@ -3914,7 +3914,7 @@ endjob:
>
> if (qemuDomainObjEndJob(vm) == 0)
> vm = NULL;
> - if ((ret == 0) && (flags & VIR_DUMP_CRASH) && !vm->persistent) {
> + else if ((ret == 0) && (flags & VIR_DUMP_CRASH) && !vm->persistent) {
> virDomainRemoveInactive(&driver->domains,
> vm);
> vm = NULL;
Oops I didn't realized that vm could be NULL there when fixing
the merge conflict !
thanks for catching this, pushed !
Daniel
--
Daniel Veillard | libxml Gnome XML XSLT toolkit http://xmlsoft.org/
daniel at veillard.com | Rpmfind RPM search engine http://rpmfind.net/
http://veillard.com/ | virtualization library http://libvirt.org/
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