| From: Florian Fainelli <f.fainelli@gmail.com> |
| Subject: scripts-gdb-add-a-radix-tree-parser-v2 |
| Date: Wed, 5 Apr 2023 15:27:43 -0700 |
| |
| guard against a NULL node in the while loop |
| |
| Link: https://lkml.kernel.org/r/20230405222743.1191674-1-f.fainelli@gmail.com |
| Signed-off-by: Kieran Bingham <kieran.bingham@linaro.org> |
| Signed-off-by: Florian Fainelli <f.fainelli@gmail.com> |
| Cc: Jan Kiszka <jan.kiszka@siemens.com> |
| Cc: Kieran Bingham <kbingham@kernel.org> |
| Signed-off-by: Andrew Morton <akpm@linux-foundation.org> |
| --- |
| |
| scripts/gdb/linux/radixtree.py | 3 +++ |
| 1 file changed, 3 insertions(+) |
| |
| --- a/scripts/gdb/linux/radixtree.py~scripts-gdb-add-a-radix-tree-parser-v2 |
| +++ a/scripts/gdb/linux/radixtree.py |
| @@ -58,6 +58,9 @@ def lookup(root, index): |
| offset = (index >> node['shift']) & constants.LX_RADIX_TREE_MAP_MASK |
| slot = node['slots'][offset] |
| |
| + if slot == 0: |
| + return None |
| + |
| node = slot.cast(node.type.pointer()).dereference() |
| if node == 0: |
| return None |
| _ |
