[PATCH V2 0/2] Added debugfs node initialization and null pointer detection.
From: Yibin Ding
Date: Sat Sep 14 2024 - 06:25:07 EST
From: Yibin Ding <Yibin.ding@xxxxxxxxxx>
The two debugfs nodes (/sys/kernel/debug/interconnect/test_client/dst_node,
src_node) do not initialize the character pointers before creation. For
such uninitialized nodes, direct access will cause a crash due to accessing
a null pointer.
For example, directly execute the following command after booting:
cat /sys/kernel/debug/interconnect/test_client/dst_node.
Therefore, for the problem nodes, it is necessary to add initialization
operations and null pointer detection when accessing.
Yibin Ding (2):
interconnect: Add character pointer initialization
debugfs: Fix crash problem caused by accessing uninitialized nodes
drivers/interconnect/debugfs-client.c | 9 +++++++--
fs/debugfs/file.c | 4 ++++
2 files changed, 11 insertions(+), 2 deletions(-)
--
2.25.1