Sherry Sun 316ae95c17 tty: serial: fsl_lpuart: disable dma rx/tx use flags in lpuart_dma_shutdown ... lpuart_dma_shutdown tears down lpuart dma, but lpuart_flush_buffer can still occur which in turn tries to access dma apis if lpuart_dma_tx_use flag is true. At this point since dma is torn down, these dma apis can abort. Set lpuart_dma_tx_use and the corresponding rx flag lpuart_dma_rx_use to false in lpuart_dma_shutdown so that dmas are not accessed after they are relinquished. Otherwise, when try to kill btattach, kernel may panic. This patch may fix this issue. root@imx8ulpevk:~# btattach -B /dev/ttyLP2 -S 115200 ^C[ 90.182296] Internal error: synchronous external abort: 96000210 [#1] PREEMPT SMP [ 90.189806] Modules linked in: moal(O) mlan(O) [ 90.194258] CPU: 0 PID: 503 Comm: btattach Tainted: G O 5.15.32-06136-g34eecdf2f9e4 #37 [ 90.203554] Hardware name: NXP i.MX8ULP 9X9 EVK (DT) [ 90.208513] pstate: 600000c5 (nZCv daIF -PAN -UAO -TCO -DIT -SSBS BTYPE=--) [ 90.215470] pc : fsl_edma3_disable_request+0x8/0x60 [ 90.220358] lr : fsl_edma3_terminate_all+0x34/0x20c [ 90.225237] sp : ffff800013f0bac0 [ 90.228548] x29: ffff800013f0bac0 x28: 0000000000000001 x27: ffff000008404800 [ 90.235681] x26: ffff000008404960 x25: ffff000008404a08 x24: ffff000008404a00 [ 90.242813] x23: ffff000008404a60 x22: 0000000000000002 x21: 0000000000000000 [ 90.249946] x20: ffff800013f0baf8 x19: ffff00000559c800 x18: 0000000000000000 [ 90.257078] x17: 0000000000000000 x16: 0000000000000000 x15: 0000000000000000 [ 90.264211] x14: 0000000000000003 x13: 0000000000000000 x12: 0000000000000040 [ 90.271344] x11: ffff00000600c248 x10: ffff800013f0bb10 x9 : ffff000057bcb090 [ 90.278477] x8 : fffffc0000241a08 x7 : ffff00000534ee00 x6 : ffff000008404804 [ 90.285609] x5 : 0000000000000000 x4 : 0000000000000000 x3 : ffff0000055b3480 [ 90.292742] x2 : ffff8000135c0000 x1 : ffff00000534ee00 x0 : ffff00000559c800 [ 90.299876] Call trace: [ 90.302321] fsl_edma3_disable_request+0x8/0x60 [ 90.306851] lpuart_flush_buffer+0x40/0x160 [ 90.311037] uart_flush_buffer+0x88/0x120 [ 90.315050] tty_driver_flush_buffer+0x20/0x30 [ 90.319496] hci_uart_flush+0x44/0x90 [ 90.323162] +0x34/0x12c [ 90.327253] tty_ldisc_close+0x38/0x70 [ 90.331005] tty_ldisc_release+0xa8/0x190 [ 90.335018] tty_release_struct+0x24/0x8c [ 90.339022] tty_release+0x3ec/0x4c0 [ 90.342593] __fput+0x70/0x234 [ 90.345652] ____fput+0x14/0x20 [ 90.348790] task_work_run+0x84/0x17c [ 90.352455] do_exit+0x310/0x96c [ 90.355688] do_group_exit+0x3c/0xa0 [ 90.359259] __arm64_sys_exit_group+0x1c/0x20 [ 90.363609] invoke_syscall+0x48/0x114 [ 90.367362] el0_svc_common.constprop.0+0xd4/0xfc [ 90.372068] do_el0_svc+0x2c/0x94 [ 90.375379] el0_svc+0x28/0x80 [ 90.378438] el0t_64_sync_handler+0xa8/0x130 [ 90.382711] el0t_64_sync+0x1a0/0x1a4 [ 90.386376] Code: 17ffffda d503201f d503233f f9409802 (b9400041) [ 90.392467] ---[ end trace 2f60524b4a43f1f6 ]--- [ 90.397073] note: btattach[503] exited with preempt_count 1 [ 90.402636] Fixing recursive fault but reboot is needed! Fixes: 6250cc30c4c4 ("tty: serial: fsl_lpuart: Use scatter/gather DMA for Tx") Reviewed-by: Ilpo Järvinen <ilpo.jarvinen@linux.intel.com> Signed-off-by: Thara Gopinath <tgopinath@microsoft.com> Signed-off-by: Sherry Sun <sherry.sun@nxp.com> Link: https://lore.kernel.org/r/20220920111703.1532-1-sherry.sun@nxp.com Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>		2022-09-22 16:30:42 +02:00
..
accessibility	TTY / Serial driver changes for 6.0-rc1	2022-08-08 11:31:40 -07:00
acpi	Merge branch 'acpi-processor' into acpi	2022-08-27 14:43:18 +02:00
amba	ARM: 9220/1: amba: Remove deferred device addition	2022-07-28 15:09:23 +01:00
android	Char/Misc driver fixes for 6.0-rc4	2022-09-02 10:50:08 -07:00
ata	ata: libata-eh: Add missing command name	2022-08-16 05:42:51 +09:00
atm	atm: idt77252: fix use-after-free bugs caused by tst_timer	2022-08-08 20:51:59 -07:00
auxdisplay
base	firmware_loader: Fix memory leak in firmware upload	2022-09-01 17:47:27 +02:00
bcma
block	xen: branch for v6.0-rc4	2022-09-03 13:23:11 -07:00
bluetooth	SPDX changes for 6.0-rc1	2022-08-04 12:12:54 -07:00
bus	bus: mhi: host: Fix up null pointer access in mhi_irq_handler	2022-08-29 22:33:46 +05:30
cdrom
char	Merge 6.0-rc4 into tty-next	2022-09-05 07:59:28 +02:00
clk	Revert "clk: core: Honor CLK_OPS_PARENT_ENABLE for clk gate ops"	2022-08-31 12:06:46 -07:00
clocksource	RISC-V: Add Sstc extension support	2022-08-11 14:41:52 -07:00
comedi	pci-v5.20-changes	2022-08-04 19:30:35 -07:00
connector
counter
cpufreq	cpufreq: check only freq_table in __resolve_freq()	2022-08-23 20:00:52 +02:00
cpuidle	More power management updates for 5.20-rc1	2022-08-08 14:29:00 -07:00
crypto	This update includes the following changes:	2022-08-02 17:45:14 -07:00
cxl	cxl/hdm: Fix skip allocations vs multiple pmem allocations	2022-08-05 16:11:38 -07:00
dax	dax: introduce holder for dax_device	2022-07-17 17:14:30 -07:00
dca
devfreq	More power management updates for 5.20-rc1	2022-08-08 14:29:00 -07:00
dio
dma	pci-v5.20-changes	2022-08-04 19:30:35 -07:00
dma-buf	dma-buf/dma-resv: check if the new fence is really later	2022-08-25 13:10:30 +02:00
edac	powerpc updates for 6.0	2022-08-06 16:38:17 -07:00
eisa
extcon	extcon: Add EXTCON_DISP_CVBS and EXTCON_DISP_EDP	2022-07-15 11:37:41 +09:00
firewire	firewire: net: Make use of get_unaligned_be48(), put_unaligned_be48()	2022-07-28 22:21:54 -07:00
firmware	Merge branch 'dmi-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jdelvare/staging	2022-08-24 10:19:20 -07:00
fpga
fsi
gnss
gpio	gpio: ws16c48: Make irq_chip immutable	2022-09-03 22:56:34 +02:00
gpu	- GVT fixes including fix for a CommetLake regression in mmio table	2022-09-02 11:26:50 +10:00
greybus
hid	for-linus-2022083101	2022-08-31 09:54:14 -07:00
hsi
hte
hv	Drivers: hv: Create debugfs file with hyper-v balloon usage information	2022-07-18 11:19:02 +00:00
hwmon	hwmon: (gpio-fan) Fix array out of bounds access	2022-08-29 21:23:23 -07:00
hwspinlock	hwspinlock: qcom: Add support for mmio usage to sfpb-mutex	2022-07-16 21:47:44 -05:00
hwtracing	asm-generic: updates for 6.0	2022-08-05 10:07:23 -07:00
i2c	i2c: imx: Make sure to unregister adapter on remove()	2022-08-21 10:27:33 +02:00
i3c
idle	Power management updates for 5.20-rc1	2022-08-02 11:17:00 -07:00
iio	iio: light: cm32181: make cm32181_pm_ops static	2022-08-21 18:24:16 +01:00
infiniband	RDMA: Handle the return code from dma_resv_wait_timeout() properly	2022-08-16 17:13:23 +03:00
input	Input updates for v6.0-rc3	2022-09-03 13:09:46 -07:00
interconnect	Merge branch 'icc-rpm' into icc-next	2022-07-15 17:56:31 +03:00
iommu	Revert "iommu/of: Delete usage of driver_deferred_probe_check_state()"	2022-08-23 13:14:02 +02:00
ipack	tty: Make ->set_termios() old ktermios const	2022-08-30 14:22:35 +02:00
irqchip	irqchip fixes for 6.0, take #1	2022-08-18 17:37:22 +02:00
isdn
leds	LED updates for 5.20: new driver for bcm63138, is31fl319x updates,	2022-08-08 11:36:21 -07:00
macintosh	macintosh/adb: fix oob read in do_adb_query() function	2022-07-20 22:06:30 +10:00
mailbox	- mtk: use rx_callback instead of cmdq_task_cb.	2022-08-08 10:19:40 -07:00
mcb
md	block-6.0-2022-08-26	2022-08-26 11:05:54 -07:00
media	media: mceusb: Use new usb_control_msg_*() routines	2022-08-30 15:32:07 +02:00
memory	More power management updates for 5.20-rc1	2022-08-08 14:29:00 -07:00
memstick	MMC core:	2022-08-04 19:41:09 -07:00
message
mfd	- Core Frameworks	2022-08-06 10:25:16 -07:00
misc	misc: fastrpc: increase maximum session count	2022-09-01 16:13:07 +02:00
mmc	Merge 6.0-rc4 into tty-next	2022-09-05 07:59:28 +02:00
most
mtd	MTD core changes:	2022-08-05 14:13:45 -07:00
mux
net	termios: get rid of non-UAPI asm/termios.h	2022-09-09 10:44:35 +02:00
nfc	nfc: pn533: Fix use-after-free bugs caused by pn532_cmd_timeout	2022-08-22 14:51:30 +01:00
ntb	NTB: epf: Allow more flexibility in the memory BAR map method	2022-08-09 17:54:03 -04:00
nubus
nvdimm	virtio: fatures, fixes	2022-08-12 09:50:34 -07:00
nvme	block-6.0-2022-09-02	2022-09-02 16:44:30 -07:00
nvmem	SPDX changes for 6.0-rc1	2022-08-04 12:12:54 -07:00
of	RISC-V Patches for the 5.20 Merge Window, Part 2	2022-08-12 18:39:43 -07:00
opp	OPP updates for 5.20-rc1	2022-08-03 17:49:38 +02:00
parisc	parisc: ccio-dma: Handle kmalloc failure in ccio_init_resources()	2022-08-22 11:09:17 +02:00
parport
pci	Fix of heap data and clang warnings, support for a new Intel NTB device,	2022-08-13 14:00:45 -07:00
pcmcia
peci	peci: cpu: Fix use-after-free in adev_release()	2022-08-15 20:31:35 +02:00
perf	arm64 fixes for -rc4	2022-09-02 10:32:30 -07:00
phy	pci-v5.20-changes	2022-08-04 19:30:35 -07:00
pinctrl	Pin control bulk changes for v6.0:	2022-08-10 11:01:44 -07:00
platform	platform-drivers-x86 for v6.0-2	2022-09-02 10:35:51 -07:00
pnp	PCI: Remove pci_get_legacy_ide_irq() and asm-generic/pci.h	2022-07-22 17:23:45 -05:00
power	power supply and reset changes for the v6.0 series	2022-08-12 09:37:33 -07:00
powercap	Power management updates for 5.20-rc1	2022-08-02 11:17:00 -07:00
pps
ps3
ptp	SPDX changes for 6.0-rc1	2022-08-04 12:12:54 -07:00
pwm	SPDX changes for 6.0-rc1	2022-08-04 12:12:54 -07:00
rapidio
ras
regulator	regulator: Fixes for v6.0	2022-08-16 11:36:38 -07:00
remoteproc	virtio: Revert "virtio: find_vqs() add arg sizes"	2022-08-16 01:40:24 -04:00
reset	ARM: SoC: late updates for 6.0	2022-08-05 10:02:33 -07:00
rpmsg	rpmsg: convert sysfs snprintf to sysfs_emit	2022-07-16 23:08:47 -05:00
rtc	rtc: spear: set range max	2022-08-09 00:56:41 +02:00
s390	Merge 6.0-rc4 into tty-next	2022-09-05 07:59:28 +02:00
sbus
scsi	scsi: sd: Revert "Rework asynchronous resume support"	2022-08-22 22:45:25 -04:00
sh
siox
slimbus
soc	More power management updates for 5.20-rc1	2022-08-08 14:29:00 -07:00
soundwire	soundwire: qcom: fix device status array range	2022-09-01 14:26:44 +05:30
spi	spi: Fixes for v6.0	2022-08-16 11:40:15 -07:00
spmi
ssb
staging	Merge 6.0-rc4 into tty-next	2022-09-05 07:59:28 +02:00
target	SCSI misc on 20220813	2022-08-13 13:41:48 -07:00
tc
tee	tee: add overflow check in register_shm_helper()	2022-08-18 09:20:27 -07:00
thermal	Merge branch 'thermal-core'	2022-08-27 15:07:58 +02:00
thunderbolt	thunderbolt: Check router generation before connecting xHCI	2022-08-18 11:55:52 +03:00
tty	tty: serial: fsl_lpuart: disable dma rx/tx use flags in lpuart_dma_shutdown	2022-09-22 16:30:42 +02:00
ufs	scsi: ufs: core: Reduce the power mode change timeout	2022-08-19 21:34:36 -04:00
uio
usb	Merge 6.0-rc4 into tty-next	2022-09-05 07:59:28 +02:00
vdpa	vdpa/mlx5: Fix possible uninitialized return value	2022-08-11 10:00:36 -04:00
vfio	KVM: s390: pci: Hook to access KVM lowlevel from VFIO	2022-08-29 13:29:28 +02:00
vhost	virtio: fatures, fixes	2022-08-12 09:50:34 -07:00
video	fbdev: fbcon: Properly revert changes when vc_resize() failed	2022-08-26 19:56:18 +02:00
virt	Char / Misc driver changes for 6.0-rc1	2022-08-04 11:05:48 -07:00
virtio	virtio: kerneldocs fixes and enhancements	2022-08-16 01:40:24 -04:00
vlynq
w1
watchdog	linux-watchdog 5.20-rc1 tag	2022-08-08 15:04:04 -07:00
xen	xen: branch for v6.0-rc4	2022-09-03 13:23:11 -07:00
zorro
Kconfig
Makefile	Staging driver patches for 6.0-rc1	2022-08-04 12:01:42 -07:00