Alex Elder e11ec2b868 net: ipa: only reset hashed tables when supported ... Last year, the code that manages GSI channel transactions switched from using spinlock-protected linked lists to using indexes into the ring buffer used for a channel. Recently, Google reported seeing transaction reference count underflows occasionally during shutdown. Doug Anderson found a way to reproduce the issue reliably, and bisected the issue to the commit that eliminated the linked lists and the lock. The root cause was ultimately determined to be related to unused transactions being committed as part of the modem shutdown cleanup activity. Unused transactions are not normally expected (except in error cases). The modem uses some ranges of IPA-resident memory, and whenever it shuts down we zero those ranges. In ipa_filter_reset_table() a transaction is allocated to zero modem filter table entries. If hashing is not supported, hashed table memory should not be zeroed. But currently nothing prevents that, and the result is an unused transaction. Something similar occurs when we zero routing table entries for the modem. By preventing any attempt to clear hashed tables when hashing is not supported, the reference count underflow is avoided in this case. Note that there likely remains an issue with properly freeing unused transactions (if they occur due to errors). This patch addresses only the underflows that Google originally reported. Cc: <stable@vger.kernel.org> # 6.1.x Fixes: d338ae28d8 ("net: ipa: kill all other transaction lists") Tested-by: Douglas Anderson <dianders@chromium.org> Signed-off-by: Alex Elder <elder@linaro.org> Link: https://lore.kernel.org/r/20230724224055.1688854-1-elder@linaro.org Signed-off-by: Jakub Kicinski <kuba@kernel.org>		2023-07-25 20:34:20 -07:00
..
accel	Linux 6.5-rc1	2023-07-11 09:23:20 +02:00
accessibility
acpi	More ACPI updates for 6.5-rc1	2023-07-06 22:25:06 -07:00
amba
android
ata	driver core changes for 6.5-rc1	2023-07-03 12:56:23 -07:00
atm
auxdisplay	drm changes for 6.5-rc1:	2023-06-29 11:00:17 -07:00
base	regmap-irq: Fix out-of-bounds access when allocating config buffers	2023-07-12 12:05:10 +01:00
bcma
block	Merge branch '6.5/scsi-staging' into 6.5/scsi-fixes	2023-07-11 12:15:15 -04:00
bluetooth	Bluetooth: btusb: Fix bluetooth on Intel Macbook 2014	2023-07-20 11:26:56 -07:00
bus	SoC fixes for 6.5, part 1	2023-07-06 09:56:53 -07:00
cdrom	cdrom/gdrom: Fix build error	2023-06-29 08:09:31 -06:00
cdx
char	tpm,tpm_tis: Disable interrupts after 1000 unhandled IRQs	2023-07-17 19:40:27 +00:00
clk	Another set of clk driver updates and fixes for the merge window. The	2023-07-04 11:07:45 -07:00
clocksource	RISC-V Patches for the 6.5 Merge Window, Part 1	2023-06-30 09:37:26 -07:00
comedi	comedi: make all 'class' structures const	2023-06-23 10:29:02 +02:00
connector
counter
cpufreq	cpufreq: sparc: Don't mark cpufreq callbacks with __init	2023-07-12 12:45:18 +02:00
cpuidle
crypto	s390 updates for 6.5 merge window part 2	2023-07-06 13:18:30 -07:00
cxl	cxl: Fix one kernel-doc comment	2023-06-29 16:03:58 -07:00
dax	dax: enable dax fault handler to report VM_FAULT_HWPOISON	2023-06-26 07:54:23 -06:00
dca
devfreq
dio
dma	dmaengine updates for v6.5	2023-07-06 09:48:31 -07:00
dma-buf	Linux 6.5-rc1	2023-07-11 09:23:20 +02:00
edac	- Add initial support for RAS hardware found on AMD server GPUs (MI200).	2023-06-26 15:09:18 -07:00
eisa
extcon
firewire	firewire: net: fix use after free in fwnet_finish_incoming_packet()	2023-06-24 14:03:46 +09:00
firmware	Char/Misc and other driver subsystem updates for 6.5-rc1	2023-07-03 12:46:47 -07:00
fpga	Char/Misc and other driver subsystem updates for 6.5-rc1	2023-07-03 12:46:47 -07:00
fsi
gnss
gpio	Pin control changes for the v6.5 kernel cycle:	2023-06-30 14:57:19 -07:00
gpu	amd-drm-fixes-6.5-2023-07-12:	2023-07-14 13:19:54 +10:00
greybus
hid	for-linus-2023071101	2023-07-12 11:56:22 -07:00
hsi
hte
hv	x86/hyperv: Fix hyperv_pcpu_input_arg handling when CPUs go online/offline	2023-06-17 23:09:47 +00:00
hwmon	driver core changes for 6.5-rc1	2023-07-03 12:56:23 -07:00
hwspinlock
hwtracing	Char/Misc and other driver subsystem updates for 6.5-rc1	2023-07-03 12:46:47 -07:00
i2c	Part 2 of I2C patches for 6.5	2023-07-08 12:28:00 -07:00
i3c
idle	intel_idle: Add __init annotation to matchup_vm_state_with_baremetal()	2023-06-28 19:09:55 +02:00
iio	driver core changes for 6.5-rc1	2023-07-03 12:56:23 -07:00
infiniband	v6.5 merge window RDMA pull request	2023-06-29 21:01:17 -07:00
input	ARM: SoC changes for 6.5	2023-06-29 15:28:33 -07:00
interconnect
iommu	iommu/sva: Fix signedness bug in iommu_sva_alloc_pasid()	2023-07-14 14:53:19 +02:00
ipack
irqchip	RISC-V Patches for the 6.5 Merge Window, Part 1	2023-06-30 09:37:26 -07:00
isdn
leds	- New Drivers	2023-07-03 11:26:05 -07:00
macintosh	macintosh: Use of_property_read_reg() to parse "reg"	2023-06-21 14:08:54 +10:00
mailbox	mailbox: ti-msgmgr: Fill non-message tx data fields with 0x0	2023-06-30 17:35:45 -05:00
mcb
md	hardening fixes for v6.5-rc1	2023-07-08 12:08:39 -07:00
media	media updates for v6.5-rc1	2023-07-05 10:42:32 -07:00
memory	asm-generic updates for 6.5	2023-07-06 10:06:04 -07:00
memstick
message
mfd	- New Drivers	2023-07-03 10:55:04 -07:00
misc	Char/Misc and other driver subsystem updates for 6.5-rc1	2023-07-03 12:46:47 -07:00
mmc	mmc: Revert "mmc: core: Allow mmc_start_host() synchronously detect a card"	2023-06-30 14:06:51 +02:00
most
mtd	Core MTD changes:	2023-06-28 14:02:03 -07:00
mux
net	net: ipa: only reset hashed tables when supported	2023-07-25 20:34:20 -07:00
nfc	Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net	2023-06-22 18:40:38 -07:00
ntb	ntb: hw: amd: Fix debugfs_create_dir error checking	2023-07-08 13:55:44 -04:00
nubus
nvdimm	dax: enable dax fault handler to report VM_FAULT_HWPOISON	2023-06-26 07:54:23 -06:00
nvme	SCSI fixes on 20230714	2023-07-14 19:57:29 -07:00
nvmem
of	Devicetree updates for v6.5:	2023-06-29 14:58:26 -07:00
opp	OPP: Properly propagate error along when failing to get icc_path	2023-06-27 07:35:14 +05:30
parisc	parisc: Move init function declarations into header file	2023-06-30 17:14:15 +02:00
parport	Char/Misc and other driver subsystem updates for 6.5-rc1	2023-07-03 12:46:47 -07:00
pci	Fixes for pci_clean_master, error handling in driver inits, and various	2023-07-09 09:35:51 -07:00
pcmcia
peci
perf	perf: RISC-V: Remove PERF_HES_STOPPED flag checking in riscv_pmu_start()	2023-07-12 07:41:23 -07:00
phy	phy-for-6.5-v2	2023-07-05 21:38:13 -07:00
pinctrl	pinctrl: renesas: Fixes for v6.5	2023-07-13 00:05:52 +02:00
platform	platform/x86: touchscreen_dmi: Add info for the Archos 101 Cesium Educ tablet	2023-07-11 12:15:30 +02:00
pnp
power	power supply and reset changes for the 6.5 series	2023-07-03 17:23:16 -07:00
powercap	ARM: SoC drivers for 6.5	2023-06-29 15:22:19 -07:00
pps
ps3
ptp	ptp: Make max_phase_adjustment sysfs device attribute invisible when not supported	2023-07-03 13:17:25 -07:00
pwm	pwm: Changes for v6.5-rc1	2023-07-05 12:55:06 -07:00
rapidio
ras
regulator	regulator: da9063: fix null pointer deref with partial DT config	2023-07-17 06:15:18 +01:00
remoteproc	remoteproc updates for v6.5	2023-07-03 17:03:05 -07:00
reset	ARM: SoC drivers for 6.5	2023-06-29 15:22:19 -07:00
rpmsg
rtc	RTC for 6.5	2023-07-03 10:43:10 -07:00
s390	Networking fixes for 6.5-rc2, including fixes from netfilter,	2023-07-13 14:21:22 -07:00
sbus	oradax: make 'cl' a static const structure	2023-06-23 10:27:02 +02:00
scsi	scsi: storvsc: Handle SRB status value 0x30	2023-07-11 12:38:49 -04:00
sh
siox
slimbus
soc	USB / Thunderbolt driver updates for 6.5-rc1	2023-07-03 13:23:10 -07:00
soundwire	soundwire: stream: Make master_list ordered to prevent deadlocks	2023-06-21 16:31:45 +05:30
spi	spi: Fixes for v6.5	2023-07-15 08:51:02 -07:00
spmi
ssb
staging	media updates for v6.5-rc1	2023-07-05 10:42:32 -07:00
target	SCSI misc on 20230708	2023-07-08 12:35:18 -07:00
tc
tee	ARM: SoC drivers for 6.5	2023-06-29 15:22:19 -07:00
thermal	Thermal control updates for 6.5-rc1	2023-06-26 19:41:26 -07:00
thunderbolt	thunderbolt: Add test case for 3 DisplayPort tunnels	2023-06-16 09:53:29 +03:00
tty	TTY/Serial driver updates for 6.5-rc1.	2023-07-03 13:14:58 -07:00
ufs	Merge branch '6.5/scsi-staging' into 6.5/scsi-fixes	2023-07-11 12:15:15 -04:00
uio
usb	USB / Thunderbolt driver updates for 6.5-rc1	2023-07-03 13:23:10 -07:00
vdpa	virtio: features, fixes, cleanups	2023-07-03 15:38:26 -07:00
vfio	VFIO updates for v6.5-rc1	2023-06-30 15:22:09 -07:00
vhost	virtio: features, fixes, cleanups	2023-07-03 15:38:26 -07:00
video	- New Functionality	2023-07-03 11:31:01 -07:00
virt	workqueue: Ordered workqueue creation cleanups	2023-06-27 16:46:06 -07:00
virtio	virtio: allow caller to override device DMA mask in vp_modern	2023-06-27 10:47:08 -04:00
vlynq
w1
watchdog	watchdog: sp5100_tco: support Hygon FCH/SCH (Server Controller Hub)	2023-06-26 14:30:07 +02:00
xen	xen: branch for v6.5-rc2	2023-07-13 13:39:36 -07:00
zorro
Kconfig
Makefile