On 15/12/2025 02:42, Ma Ke wrote:
ti_am335x_xbar_route_allocate() calls of_find_device_by_node() which increments the reference count of the platform device, but fails to call put_device() to decrement the reference count before returning. This could cause a reference count leak each time the function is called, preventing the platform device from being properly cleaned up and leading to memory leakage.
Add proper put_device() calls in all exit paths to fix the reference count imbalance.
Found by code review.
Cc: stable@vger.kernel.org Fixes: 42dbdcc6bf96 ("dmaengine: ti-dma-crossbar: Add support for crossbar on AM33xx/AM43xx") Signed-off-by: Ma Ke make24@iscas.ac.cn
drivers/dma/ti/dma-crossbar.c | 24 ++++++++++++++++++------ 1 file changed, 18 insertions(+), 6 deletions(-)
Just a note, author sends and resends same patches without addressing feedback. At least one case was very dubious or just incorrect code, and author just ignored it and sent it again to hide the previous discussion, so I suspect LLM generated content.
I did not review the code here, but please carefully review all patches from this author before applying and simply do not trust that this looks like a fix.
Best regards, Krzysztof