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Re: [PATCH for-4.15] tools/xenstored: Avoid dereferencing a NULL pointer if LiveUpdate is failing
On 26.02.21 19:26, Julien Grall wrote:
From: Julien Grall <jgrall@xxxxxxxxxx>
In case of failure in do_lu_start(), XenStored will first free lu_start
and then try to dereference it.
This will result to a NULL dereference as the destruction callback will
set lu_start to NULL.
The crash can be avoided by freeing lu_start *after* the reply has been
set.
Fixes: af216a99fb4a ("tools/xenstore: add the basic framework for doing the live
update")
Signed-off-by: Julien Grall <jgrall@xxxxxxxxxx>
Reviewed-by: Juergen Gross <jgross@xxxxxxxx>
Juergen
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