Yake Yang 770a97d3f3 Bluetooth: btmtksdio: Fix kernel oops in btmtksdio_interrupt ... [ Upstream commit b062a0b9c1 ] Fix the following kernel oops in btmtksdio_interrrupt [ 14.339134] btmtksdio_interrupt+0x28/0x54 [ 14.339139] process_sdio_pending_irqs+0x68/0x1a0 [ 14.339144] sdio_irq_work+0x40/0x70 [ 14.339154] process_one_work+0x184/0x39c [ 14.339160] worker_thread+0x228/0x3e8 [ 14.339168] kthread+0x148/0x3ac [ 14.339176] ret_from_fork+0x10/0x30 That happened because hdev->power_on is already called before sdio_set_drvdata which btmtksdio_interrupt handler relies on is not properly set up. The details are shown as the below: hci_register_dev would run queue_work(hdev->req_workqueue, &hdev->power_on) as WQ_HIGHPRI workqueue_struct to complete the power-on sequeunce and thus hci_power_on may run before sdio_set_drvdata is done in btmtksdio_probe. The hci_dev_do_open in hci_power_on would initialize the device and enable the interrupt and thus it is possible that btmtksdio_interrupt is being called right before sdio_set_drvdata is filled out. When btmtksdio_interrupt is being called and sdio_set_drvdata is not filled , the kernel oops is going to happen because btmtksdio_interrupt access an uninitialized pointer. Fixes: 9aebfd4a22 ("Bluetooth: mediatek: add support for MediaTek MT7663S and MT7668S SDIO devices") Reviewed-by: Mark Chen <markyawenchen@gmail.com> Co-developed-by: Sean Wang <sean.wang@mediatek.com> Signed-off-by: Sean Wang <sean.wang@mediatek.com> Signed-off-by: Yake Yang <yake.yang@mediatek.com> Signed-off-by: Marcel Holtmann <marcel@holtmann.org> Signed-off-by: Sasha Levin <sashal@kernel.org>		2022-04-08 14:23:41 +02:00
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ath3k.c
bcm203x.c
bfusb.c
bluecard_cs.c
bpa10x.c
bt3c_cs.c
btbcm.c
btbcm.h
btintel.c	Bluetooth: btintel: Fix WBS setting for Intel legacy ROM products	2022-04-08 14:23:24 +02:00
btintel.h	Bluetooth: btintel: Fix WBS setting for Intel legacy ROM products	2022-04-08 14:23:24 +02:00
btmrvl_debugfs.c
btmrvl_drv.h
btmrvl_main.c
btmrvl_sdio.c
btmrvl_sdio.h
btmtksdio.c	Bluetooth: btmtksdio: Fix kernel oops in btmtksdio_interrupt	2022-04-08 14:23:41 +02:00
btmtkuart.c
btqca.c
btqca.h
btqcomsmd.c
btrsi.c
btrtl.c
btrtl.h
btsdio.c
btusb.c	Bluetooth: btintel: Fix WBS setting for Intel legacy ROM products	2022-04-08 14:23:24 +02:00
dtl1_cs.c
h4_recv.h
hci_ag6xx.c
hci_ath.c
hci_bcm.c
hci_bcsp.c
hci_h4.c
hci_h5.c	Bluetooth: hci_uart: add missing NULL check in h5_enqueue	2022-04-08 14:23:41 +02:00
hci_intel.c
hci_ldisc.c
hci_ll.c
hci_mrvl.c
hci_nokia.c
hci_qca.c
hci_serdev.c	Bluetooth: hci_serdev: call init_rwsem() before p->open()	2022-04-08 14:23:25 +02:00
hci_uart.h
hci_vhci.c
Kconfig
Makefile
virtio_bt.c