linux-kernel - [PATCH v1 12/16] misc: fastrpc: Add support for users to clean up DSP user PD

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Date: Fri, 2 Feb 2024 12:10:35 +0530
From: Ekansh Gupta <quic_ekangupt@...cinc.com>
To: <srinivas.kandagatla@...aro.org>, <linux-arm-msm@...r.kernel.org>
CC: <gregkh@...uxfoundation.org>, <linux-kernel@...r.kernel.org>
Subject: [PATCH v1 12/16] misc: fastrpc: Add support for users to clean up DSP user PD

Add a control mechanism for users to clean up DSP user PD. This
method can be used by users for handling any unexpected hang
scenarios on DSP PD. User can clean up DSP PD and restart the
user PD again.

Signed-off-by: Ekansh Gupta <quic_ekangupt@...cinc.com>
---
 drivers/misc/fastrpc.c | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/drivers/misc/fastrpc.c b/drivers/misc/fastrpc.c
index d4a4ad54a5c9..d1be89f84214 100644
--- a/drivers/misc/fastrpc.c
+++ b/drivers/misc/fastrpc.c
@@ -2360,6 +2360,11 @@ static int fastrpc_internal_control(struct fastrpc_user *fl,
 	case FASTRPC_CONTROL_RPC_POLL:
 		err = fastrpc_manage_poll_mode(fl, cp->lp.enable, cp->lp.latency);
 		break;
+	case FASTRPC_CONTROL_DSPPROCESS_CLEAN:
+		err = fastrpc_release_current_dsp_process(fl);
+		if (!err)
+			fastrpc_queue_pd_status(fl, fl->cctx->domain_id, FASTRPC_USERPD_FORCE_KILL);
+		break;
 	default:
 		err = -EBADRQC;
 		break;
-- 
2.17.0