On Jun 04, 2024 / 14:15, Bart Van Assche wrote: [...] > From 879ca4e5f9ab8c4ce522b4edc144a3938a2f4afb Mon Sep 17 00:00:00 2001 > From: Bart Van Assche <bvanassche@xxxxxxx> > Date: Tue, 4 Jun 2024 12:49:44 -0700 > Subject: [PATCH] RDMA/iwcm: Fix a use-after-free related to destroying CM IDs > > iw_conn_req_handler() associates a new struct rdma_id_private (conn_id) with > an existing struct iw_cm_id (cm_id) as follows: > > conn_id->cm_id.iw = cm_id; > cm_id->context = conn_id; > cm_id->cm_handler = cma_iw_handler; > > rdma_destroy_id() frees both the cm_id and the struct rdma_id_private. Make > sure that cm_work_handler() does not trigger a use-after-free by delaing > freeing of the struct rdma_id_private until all pending work has finished. > > Signed-off-by: Bart Van Assche <bvanassche@xxxxxxx> Thank you Bart, I applied this patch on top of the kernel v6.10-rc2, and the KASAN suaf disappeared. I repeated the test case 100 times, and did not see the failure. I also ran whole blktests with my test set up and saw no regression. Tested-by: Shin'ichiro Kawasaki <shinichiro.kawasaki@xxxxxxx>
