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X-MS-Exchange-AntiSpam-MessageData-ChunkCount: 1 X-MS-Exchange-AntiSpam-MessageData-0: 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 X-OriginatorOrg: nxp.com X-MS-Exchange-CrossTenant-Network-Message-Id: 51bb74a9-cad7-44bf-795d-08dd19d2eb35 X-MS-Exchange-CrossTenant-AuthSource: DU2PR04MB8822.eurprd04.prod.outlook.com X-MS-Exchange-CrossTenant-AuthAs: Internal X-MS-Exchange-CrossTenant-OriginalArrivalTime: 11 Dec 2024 10:59:43.8502 (UTC) X-MS-Exchange-CrossTenant-FromEntityHeader: Hosted X-MS-Exchange-CrossTenant-Id: 686ea1d3-bc2b-4c6f-a92c-d99c5c301635 X-MS-Exchange-CrossTenant-MailboxType: HOSTED X-MS-Exchange-CrossTenant-UserPrincipalName: eSef2MKUn4jAS646KQHXGtNCgdxGqabq25XQyOKVspAnYHGP3hjxoO36cCoWgEUH/kqBwqqlCNrNd8n0SL0qxA== X-MS-Exchange-Transport-CrossTenantHeadersStamped: GVXPR04MB10151 The tcpci_irq() may meet below NULL pointer dereference issue: [ 2.641851] Unable to handle kernel NULL pointer dereference at virtual address 0000000000000010 [ 2.641951] status 0x1, 0x37f [ 2.650659] Mem abort info: [ 2.656490] ESR = 0x0000000096000004 [ 2.660230] EC = 0x25: DABT (current EL), IL = 32 bits [ 2.665532] SET = 0, FnV = 0 [ 2.668579] EA = 0, S1PTW = 0 [ 2.671715] FSC = 0x04: level 0 translation fault [ 2.676584] Data abort info: [ 2.679459] ISV = 0, ISS = 0x00000004, ISS2 = 0x00000000 [ 2.684936] CM = 0, WnR = 0, TnD = 0, TagAccess = 0 [ 2.689980] GCS = 0, Overlay = 0, DirtyBit = 0, Xs = 0 [ 2.695284] [0000000000000010] user address but active_mm is swapper [ 2.701632] Internal error: Oops: 0000000096000004 [#1] PREEMPT SMP [ 2.707883] Modules linked in: [ 2.710936] CPU: 1 UID: 0 PID: 87 Comm: irq/111-2-0051 Not tainted 6.12.0-rc6-06316-g7f63786ad3d1-dirty #4 [ 2.720570] Hardware name: NXP i.MX93 11X11 EVK board (DT) [ 2.726040] pstate: 60400009 (nZCv daif +PAN -UAO -TCO -DIT -SSBS BTYPE=--) [ 2.732989] pc : tcpci_irq+0x38/0x318 [ 2.736647] lr : _tcpci_irq+0x14/0x20 [ 2.740295] sp : ffff80008324bd30 [ 2.743597] x29: ffff80008324bd70 x28: ffff800080107894 x27: ffff800082198f70 [ 2.750721] x26: ffff0000050e6680 x25: ffff000004d172ac x24: ffff0000050f0000 [ 2.757845] x23: ffff000004d17200 x22: 0000000000000001 x21: ffff0000050f0000 [ 2.764969] x20: ffff000004d17200 x19: 0000000000000000 x18: 0000000000000001 [ 2.772093] x17: 0000000000000000 x16: ffff80008183d8a0 x15: ffff00007fbab040 [ 2.779217] x14: ffff00007fb918c0 x13: 0000000000000000 x12: 000000000000017a [ 2.786341] x11: 0000000000000001 x10: 0000000000000a90 x9 : ffff80008324bd00 [ 2.793465] x8 : ffff0000050f0af0 x7 : ffff00007fbaa840 x6 : 0000000000000031 [ 2.800589] x5 : 000000000000017a x4 : 0000000000000002 x3 : 0000000000000002 [ 2.807713] x2 : ffff80008324bd3a x1 : 0000000000000010 x0 : 0000000000000000 [ 2.814838] Call trace: [ 2.817273] tcpci_irq+0x38/0x318 [ 2.820583] _tcpci_irq+0x14/0x20 [ 2.823885] irq_thread_fn+0x2c/0xa8 [ 2.827456] irq_thread+0x16c/0x2f4 [ 2.830940] kthread+0x110/0x114 [ 2.834164] ret_from_fork+0x10/0x20 [ 2.837738] Code: f9426420 f9001fe0 d2800000 52800201 (f9400a60) This may happen on shared irq case. Such as two Type-C ports share one irq. After the first port finished tcpci_register_port(), it may trigger interrupt. However, if the interrupt comes by chance the 2nd port finishes devm_request_threaded_irq(), the 2nd port interrupt handler may be run at first. Then the above issue may happen. devm_request_threaded_irq() <-- port1 irq comes disable_irq(client->irq); tcpci_register_port() This will restore the logic to the state before commit (77e85107a771 "usb: typec: tcpci: support edge irq"). Fixes: 77e85107a771 ("usb: typec: tcpci: support edge irq") Cc: stable@vger.kernel.org Signed-off-by: Xu Yang --- drivers/usb/typec/tcpm/tcpci.c | 18 ++++++++---------- 1 file changed, 8 insertions(+), 10 deletions(-) diff --git a/drivers/usb/typec/tcpm/tcpci.c b/drivers/usb/typec/tcpm/tcpci.c index 2f15734a5043..db42f4bf3632 100644 --- a/drivers/usb/typec/tcpm/tcpci.c +++ b/drivers/usb/typec/tcpm/tcpci.c @@ -923,22 +923,20 @@ static int tcpci_probe(struct i2c_client *client) chip->data.set_orientation = err; + chip->tcpci = tcpci_register_port(&client->dev, &chip->data); + if (IS_ERR(chip->tcpci)) + return PTR_ERR(chip->tcpci); + err = devm_request_threaded_irq(&client->dev, client->irq, NULL, _tcpci_irq, IRQF_SHARED | IRQF_ONESHOT, dev_name(&client->dev), chip); - if (err < 0) + if (err < 0) { + tcpci_unregister_port(chip->tcpci); return err; + } - /* - * Disable irq while registering port. If irq is configured as an edge - * irq this allow to keep track and process the irq as soon as it is enabled. - */ - disable_irq(client->irq); - chip->tcpci = tcpci_register_port(&client->dev, &chip->data); - enable_irq(client->irq); - - return PTR_ERR_OR_ZERO(chip->tcpci); + return 0; } static void tcpci_remove(struct i2c_client *client)