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X-MS-Exchange-AntiSpam-MessageData-ChunkCount: 1 X-MS-Exchange-AntiSpam-MessageData-0: LlywwPAcvjfi1DzcQqD0IHEodE15PvBwW4pfq/+HZvbFRk8NHZuXpMJkBVI3/nS6QJq20pOFoDWkrBtEyB5JfRKAy+hSeGufenF8Lv9+bJc1nl5TbF2N33KwAelpuHcdEuXv9/3D8u6YjolcsYWuXqORk4UPHxpoLDwGS2lNaA2MOyDB15I9zg1lWV3H5PGJV0NMlPQQJoPiBLGF83kmsHvggcN+MSvFFBij1RcCJScdK3olGZGGOurVbmn915c6m9Y/+pgH0kHXWXc/eweTARTQYbZPKYf6DTTINiDKbeEMH4qV6ejQba+2rTlvpb02B3YacZXAjQsow2tM2FBGvjT5vwRid1aIRFuBjfk4tfaCOUdLIogvHFF8K7O9byNoMRjNHx09IV7DXVw/fflM07+oupcWyhYXr542Gxu5iNjyqLxaUZJ+dyl/1iRxRHtI X-OriginatorOrg: ti.com X-MS-Exchange-CrossTenant-OriginalArrivalTime: 28 Apr 2026 08:52:17.0478 (UTC) X-MS-Exchange-CrossTenant-Network-Message-Id: d202a4eb-dc62-4a3c-637b-08dea5037352 X-MS-Exchange-CrossTenant-Id: e5b49634-450b-4709-8abb-1e2b19b982b7 X-MS-Exchange-CrossTenant-OriginalAttributedTenantConnectingIp: TenantId=e5b49634-450b-4709-8abb-1e2b19b982b7;Ip=[198.47.21.195];Helo=[flwvzet201.ext.ti.com] X-MS-Exchange-CrossTenant-AuthSource: CH2PEPF00000099.namprd02.prod.outlook.com X-MS-Exchange-CrossTenant-AuthAs: Anonymous X-MS-Exchange-CrossTenant-FromEntityHeader: HybridOnPrem X-MS-Exchange-Transport-CrossTenantHeadersStamped: MN2PR10MB4318 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20260428_015220_914094_B1A218CD X-CRM114-Status: GOOD ( 13.28 ) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org From: Vignesh Raghavendra ring_init_data is declared on stack and thus can contain garbage which can lead to k3_ringacc_dmarings use junk address for ringrt base leading to below crash during ring pop [ 1.998239] cadence-qspi fc40000.spi: couldn't determine phase-detect-selector [ 2.532106] Unable to handle kernel paging request at virtual address ffff800081a84b98 [ 2.540051] Mem abort info: [...] [ 2.629987] Workqueue: events_unbound deferred_probe_work_func [ 2.635832] pstate: 800000c5 (Nzcv daIF -PAN -UAO -TCO -DIT -SSBS BTYPE=--) [ 2.642787] pc : k3_ringacc_ring_pop+0x48/0x94 [ 2.647234] lr : udma_pop_from_ring+0x7c/0xb4 [...] [ 2.726250] Call trace: [ 2.728691] k3_ringacc_ring_pop+0x48/0x94 [ 2.732786] udma_ring_irq_handler+0x34/0x218 [ 2.737141] __handle_irq_event_percpu+0x60/0x14c [ 2.741846] handle_irq_event+0x4c/0xa8 Fix this by explicitly initializing the variable to 0. Reported-by: Rishikesh Donadkar Reported-by: Kendall Willis Signed-off-by: Vignesh Raghavendra Signed-off-by: Sai Sree Kartheek Adivi --- drivers/dma/ti/k3-udma.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/dma/ti/k3-udma.c b/drivers/dma/ti/k3-udma.c index c964ebfcf3b68..3e9792136906a 100644 --- a/drivers/dma/ti/k3-udma.c +++ b/drivers/dma/ti/k3-udma.c @@ -5484,7 +5484,7 @@ static int udma_probe(struct platform_device *pdev) if (ud->match_data->type == DMA_TYPE_UDMA) { ud->ringacc = of_k3_ringacc_get_by_phandle(dev->of_node, "ti,ringacc"); } else { - struct k3_ringacc_init_data ring_init_data; + struct k3_ringacc_init_data ring_init_data = { 0 }; ring_init_data.tisci = ud->tisci_rm.tisci; ring_init_data.tisci_dev_id = ud->tisci_rm.tisci_dev_id; -- 2.53.0