Messages in this thread |  | | Subject | Re: [PATCH v2] scripts/gdb: fix list_for_each | From | George Prekas <> | Date | Tue, 5 Jan 2021 10:51:27 -0600 |
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On 9/24/2020 9:20 AM, George Prekas wrote: > If the list is uninitialized (next pointer is NULL), list_for_each gets > stuck in an infinite loop. Print a message and treat list as empty. > > Signed-off-by: George Prekas <prekageo@amazon.com> > --- > scripts/gdb/linux/lists.py | 5 +++++ > 1 file changed, 5 insertions(+) > > diff --git a/scripts/gdb/linux/lists.py b/scripts/gdb/linux/lists.py > index c487ddf09d38..bae4d70b7eae 100644 > --- a/scripts/gdb/linux/lists.py > +++ b/scripts/gdb/linux/lists.py > @@ -27,6 +27,11 @@ def list_for_each(head): > raise TypeError("Must be struct list_head not {}" > .format(head.type)) > > + if head['next'] == 0: > + gdb.write("list_for_each: Uninitialized list '{}' treated as > empty\n" > + .format(head.address)) > + return > + > node = head['next'].dereference() > while node.address != head.address: > yield node.address
Happy New Year!
Any updates on this?
Thanks, George
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