Commit Graph

1217245 Commits

Author SHA1 Message Date
Al Viro
d9e8319a6e ovl: move freeing ovl_entry past rcu delay
... into ->free_inode(), that is.

Fixes: 0af950f57f "ovl: move ovl_entry into ovl_inode"
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Signed-off-by: Amir Goldstein <amir73il@gmail.com>
2023-10-02 17:44:06 +03:00
Lukas Wunner
cf97c5e0f7 xhci: Preserve RsvdP bits in ERSTBA register correctly
xhci_add_interrupter() erroneously preserves only the lowest 4 bits when
writing the ERSTBA register, not the lowest 6 bits.  Fix it.

Migrate the ERST_BASE_RSVDP macro to the modern GENMASK_ULL() syntax to
avoid a u64 cast.

This was previously fixed by commit 8c1cbec9db ("xhci: fix event ring
segment table related masks and variables in header"), but immediately
undone by commit b17a57f89f ("xhci: Refactor interrupter code for
initial multi interrupter support.").

Fixes: b17a57f89f ("xhci: Refactor interrupter code for initial multi interrupter support.")
Signed-off-by: Lukas Wunner <lukas@wunner.de>
Cc: stable@vger.kernel.org # v6.3+
Signed-off-by: Mathias Nyman <mathias.nyman@linux.intel.com>
Link: https://lore.kernel.org/r/20230915143108.1532163-5-mathias.nyman@linux.intel.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2023-10-02 16:33:46 +02:00
Lukas Wunner
15f3ef0709 xhci: Clear EHB bit only at end of interrupt handler
The Event Handler Busy bit shall be cleared by software when the Event
Ring is empty.  The xHC is thereby informed that it may raise another
interrupt once it has enqueued new events (sec 4.17.2).

However since commit dc0ffbea57 ("usb: host: xhci: update event ring
dequeue pointer on purpose"), the EHB bit is already cleared after half
a segment has been processed.

As a result, spurious interrupts may occur:

- xhci_irq() processes half a segment, clears EHB, continues processing
  remaining events.
- xHC enqueues new events.  Because EHB has been cleared, xHC sets
  Interrupt Pending bit.  Interrupt moderation countdown begins.
- Meanwhile xhci_irq() continues processing events.  Interrupt
  moderation countdown reaches zero, so an MSI interrupt is signaled.
- xhci_irq() empties the Event Ring, clears EHB again and is done.
- Because an MSI interrupt has been signaled, xhci_irq() is run again.
  It discovers there's nothing to do and returns IRQ_NONE.

Avoid by clearing the EHB bit only at the end of xhci_irq().

Fixes: dc0ffbea57 ("usb: host: xhci: update event ring dequeue pointer on purpose")
Signed-off-by: Lukas Wunner <lukas@wunner.de>
Cc: stable@vger.kernel.org # v5.5+
Cc: Peter Chen <peter.chen@kernel.org>
Signed-off-by: Mathias Nyman <mathias.nyman@linux.intel.com>
Link: https://lore.kernel.org/r/20230915143108.1532163-4-mathias.nyman@linux.intel.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2023-10-02 16:33:46 +02:00
Mathias Nyman
d7cdfc319b xhci: track port suspend state correctly in unsuccessful resume cases
xhci-hub.c tracks suspended ports in a suspended_port bitfield.
This is checked when responding to a Get_Status(PORT) request to see if a
port in running U0 state was recently resumed, and adds the required
USB_PORT_STAT_C_SUSPEND change bit in those cases.

The suspended_port bit was left uncleared if a device is disconnected
during suspend. The bit remained set even when a new device was connected
and enumerated. The set bit resulted in a incorrect Get_Status(PORT)
response with a bogus USB_PORT_STAT_C_SUSPEND change
bit set once the new device reached U0 link state.

USB_PORT_STAT_C_SUSPEND change bit is only used for USB2 ports, but
xhci-hub keeps track of both USB2 and USB3 suspended ports.

Cc: stable@vger.kernel.org
Reported-by: Wesley Cheng <quic_wcheng@quicinc.com>
Closes: https://lore.kernel.org/linux-usb/d68aa806-b26a-0e43-42fb-b8067325e967@quicinc.com/
Fixes: 1d5810b692 ("xhci: Rework port suspend structures for limited ports.")
Tested-by: Wesley Cheng <quic_wcheng@quicinc.com>
Signed-off-by: Mathias Nyman <mathias.nyman@linux.intel.com>
Link: https://lore.kernel.org/r/20230915143108.1532163-3-mathias.nyman@linux.intel.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2023-10-02 16:33:46 +02:00
Wesley Cheng
41a43013d2 usb: xhci: xhci-ring: Use sysdev for mapping bounce buffer
As mentioned in:
  commit 474ed23a62 ("xhci: align the last trb before link if it is
easily splittable.")

A bounce buffer is utilized for ensuring that transfers that span across
ring segments are aligned to the EP's max packet size.  However, the device
that is used to map the DMA buffer to is currently using the XHCI HCD,
which does not carry any DMA operations in certain configrations.
Migration to using the sysdev entry was introduced for DWC3 based
implementations where the IOMMU operations are present.

Replace the reference to the controller device to sysdev instead.  This
allows the bounce buffer to be properly mapped to any implementations that
have an IOMMU involved.

cc: stable@vger.kernel.org
Fixes: 4c39d4b949 ("usb: xhci: use bus->sysdev for DMA configuration")
Signed-off-by: Wesley Cheng <quic_wcheng@quicinc.com>
Signed-off-by: Mathias Nyman <mathias.nyman@linux.intel.com>
Link: https://lore.kernel.org/r/20230915143108.1532163-2-mathias.nyman@linux.intel.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2023-10-02 16:33:45 +02:00
Prashanth K
a00e197dae usb: typec: ucsi: Clear EVENT_PENDING bit if ucsi_send_command fails
Currently if ucsi_send_command() fails, then we bail out without
clearing EVENT_PENDING flag. So when the next connector change
event comes, ucsi_connector_change() won't queue the con->work,
because of which none of the new events will be processed.

Fix this by clearing EVENT_PENDING flag if ucsi_send_command()
fails.

Cc: stable@vger.kernel.org # 5.16
Fixes: 512df95b94 ("usb: typec: ucsi: Better fix for missing unplug events issue")
Signed-off-by: Prashanth K <quic_prashk@quicinc.com>
Acked-by: Heikki Krogerus <heikki.krogerus@linux.intel.com>
Link: https://lore.kernel.org/r/1694423055-8440-1-git-send-email-quic_prashk@quicinc.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2023-10-02 16:15:41 +02:00
Javier Carrasco
e59e38158c usb: misc: onboard_hub: add support for Microchip USB2412 USB 2.0 hub
The USB2412 is a 2-Port USB 2.0 hub controller that provides a reset pin
and a single 3v3 powre source, which makes it suitable to be controlled
by the onboard_hub driver.

This hub has the same reset timings as USB2514/2517 and the same
onboard hub specific-data can be reused for USB2412.

Signed-off-by: Javier Carrasco <javier.carrasco@wolfvision.net>
Cc: stable <stable@kernel.org>
Acked-by: Matthias Kaehlcke <mka@chromium.org>
Link: https://lore.kernel.org/r/20230911-topic-2412_onboard_hub-v1-1-7704181ddfff@wolfvision.net
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2023-10-02 16:15:22 +02:00
William A. Kennington III
2ec8b01097
spi: npcm-fiu: Fix UMA reads when dummy.nbytes == 0
We don't want to use the value of ilog2(0) as dummy.buswidth is 0 when
dummy.nbytes is 0. Since we have no dummy bytes, we don't need to
configure the dummy byte bits per clock register value anyway.

Signed-off-by: "William A. Kennington III" <william@wkennington.com>
Link: https://lore.kernel.org/r/20230922182812.2728066-1-william@wkennington.com
Signed-off-by: Mark Brown <broonie@kernel.org>
2023-10-02 15:03:19 +01:00
Zhang Shurong
892fbdb203
ASoC: rt5682: Fix regulator enable/disable sequence
This will attempt to disable the regulators if the initial enable fails
which is a bug.

Fix this bug by modifying the code to the correct sequence.

Signed-off-by: Zhang Shurong <zhang_shurong@foxmail.com>
Link: https://lore.kernel.org/r/tencent_4F37C9B5315B7960041E8E0ADDA869128F08@qq.com
Signed-off-by: Mark Brown <broonie@kernel.org>
2023-10-02 14:06:15 +01:00
Matthias Reichl
b84b531494
ASoC: hdmi-codec: Fix broken channel map reporting
Commit 4e08713336 ("ASoC: hdmi-codec: fix channel info for
compressed formats") accidentally changed hcp->chmap_idx from
ca_id, the CEA channel allocation ID, to idx, the index to
the table of channel mappings ordered by preference.

This resulted in wrong channel maps being reported to userspace,
eg for 5.1 "FL,FR,LFE,FC" was reported instead of the expected
"FL,FR,LFE,FC,RL,RR":

~ # speaker-test -c 6 -t sine
...
 0 - Front Left
 3 - Front Center
 1 - Front Right
 2 - LFE
 4 - Unknown
 5 - Unknown

~ # amixer cget iface=PCM,name='Playback Channel Map' | grep ': values'
  : values=3,4,8,7,0,0,0,0

Switch this back to ca_id in case of PCM audio so the correct channel
map is reported again and set it to HDMI_CODEC_CHMAP_IDX_UNKNOWN in
case of non-PCM audio so the PCM channel map control returns "Unknown"
channels (value 0).

Fixes: 4e08713336 ("ASoC: hdmi-codec: fix channel info for compressed formats")
Cc: stable@vger.kernel.org
Signed-off-by: Matthias Reichl <hias@horus.com>
Link: https://lore.kernel.org/r/20230929195027.97136-1-hias@horus.com
Signed-off-by: Mark Brown <broonie@kernel.org>
2023-10-02 14:06:14 +01:00
Tom Lendacky
62d5e970d0 x86/sev: Change npages to unsigned long in snp_accept_memory()
In snp_accept_memory(), the npages variables value is calculated from
phys_addr_t variables but is an unsigned int. A very large range passed
into snp_accept_memory() could lead to truncating npages to zero. This
doesn't happen at the moment but let's be prepared.

Fixes: 6c32117963 ("x86/sev: Add SNP-specific unaccepted memory support")
Signed-off-by: Tom Lendacky <thomas.lendacky@amd.com>
Signed-off-by: Borislav Petkov (AMD) <bp@alien8.de>
Cc: <stable@kernel.org>
Link: https://lore.kernel.org/r/6d511c25576494f682063c9fb6c705b526a3757e.1687441505.git.thomas.lendacky@amd.com
2023-10-02 14:55:41 +02:00
Tom Lendacky
6bc6f7d9d7 x86/sev: Use the GHCB protocol when available for SNP CPUID requests
SNP retrieves the majority of CPUID information from the SNP CPUID page.
But there are times when that information needs to be supplemented by the
hypervisor, for example, obtaining the initial APIC ID of the vCPU from
leaf 1.

The current implementation uses the MSR protocol to retrieve the data from
the hypervisor, even when a GHCB exists. The problem arises when an NMI
arrives on return from the VMGEXIT. The NMI will be immediately serviced
and may generate a #VC requiring communication with the hypervisor.

Since a GHCB exists in this case, it will be used. As part of using the
GHCB, the #VC handler will write the GHCB physical address into the GHCB
MSR and the #VC will be handled.

When the NMI completes, processing resumes at the site of the VMGEXIT
which is expecting to read the GHCB MSR and find a CPUID MSR protocol
response. Since the NMI handling overwrote the GHCB MSR response, the
guest will see an invalid reply from the hypervisor and self-terminate.

Fix this problem by using the GHCB when it is available. Any NMI
received is properly handled because the GHCB contents are copied into
a backup page and restored on NMI exit, thus preserving the active GHCB
request or result.

  [ bp: Touchups. ]

Fixes: ee0bfa08a3 ("x86/compressed/64: Add support for SEV-SNP CPUID table in #VC handlers")
Signed-off-by: Tom Lendacky <thomas.lendacky@amd.com>
Signed-off-by: Borislav Petkov (AMD) <bp@alien8.de>
Cc: <stable@kernel.org>
Link: https://lore.kernel.org/r/a5856fa1ebe3879de91a8f6298b6bbd901c61881.1690578565.git.thomas.lendacky@amd.com
2023-10-02 14:55:39 +02:00
Piyush Mehta
3061b6491f usb: gadget: udc-xilinx: replace memcpy with memcpy_toio
For ARM processor, unaligned access to device memory is not allowed.
Method memcpy does not take care of alignment.

USB detection failure with the unalingned address of memory, with
below kernel crash. To fix the unalingned address kernel panic,
replace memcpy with memcpy_toio method.

Kernel crash:
Unable to handle kernel paging request at virtual address ffff80000c05008a
Mem abort info:
  ESR = 0x96000061
  EC = 0x25: DABT (current EL), IL = 32 bits
  SET = 0, FnV = 0
  EA = 0, S1PTW = 0
  FSC = 0x21: alignment fault
Data abort info:
  ISV = 0, ISS = 0x00000061
  CM = 0, WnR = 1
swapper pgtable: 4k pages, 48-bit VAs, pgdp=000000000143b000
[ffff80000c05008a] pgd=100000087ffff003, p4d=100000087ffff003,
pud=100000087fffe003, pmd=1000000800bcc003, pte=00680000a0010713
Internal error: Oops: 96000061 [#1] SMP
Modules linked in:
CPU: 0 PID: 0 Comm: swapper/0 Not tainted 5.15.19-xilinx-v2022.1 #1
Hardware name: ZynqMP ZCU102 Rev1.0 (DT)
pstate: 200000c5 (nzCv daIF -PAN -UAO -TCO -DIT -SSBS BTYPE=--)
pc : __memcpy+0x30/0x260
lr : __xudc_ep0_queue+0xf0/0x110
sp : ffff800008003d00
x29: ffff800008003d00 x28: ffff800009474e80 x27: 00000000000000a0
x26: 0000000000000100 x25: 0000000000000012 x24: ffff000800bc8080
x23: 0000000000000001 x22: 0000000000000012 x21: ffff000800bc8080
x20: 0000000000000012 x19: ffff000800bc8080 x18: 0000000000000000
x17: ffff800876482000 x16: ffff800008004000 x15: 0000000000004000
x14: 00001f09785d0400 x13: 0103020101005567 x12: 0781400000000200
x11: 00000000c5672a10 x10: 00000000000008d0 x9 : ffff800009463cf0
x8 : ffff8000094757b0 x7 : 0201010055670781 x6 : 4000000002000112
x5 : ffff80000c05009a x4 : ffff000800a15012 x3 : ffff00080362ad80
x2 : 0000000000000012 x1 : ffff000800a15000 x0 : ffff80000c050088
Call trace:
 __memcpy+0x30/0x260
 xudc_ep0_queue+0x3c/0x60
 usb_ep_queue+0x38/0x44
 composite_ep0_queue.constprop.0+0x2c/0xc0
 composite_setup+0x8d0/0x185c
 configfs_composite_setup+0x74/0xb0
 xudc_irq+0x570/0xa40
 __handle_irq_event_percpu+0x58/0x170
 handle_irq_event+0x60/0x120
 handle_fasteoi_irq+0xc0/0x220
 handle_domain_irq+0x60/0x90
 gic_handle_irq+0x74/0xa0
 call_on_irq_stack+0x2c/0x60
 do_interrupt_handler+0x54/0x60
 el1_interrupt+0x30/0x50
 el1h_64_irq_handler+0x18/0x24
 el1h_64_irq+0x78/0x7c
 arch_cpu_idle+0x18/0x2c
 do_idle+0xdc/0x15c
 cpu_startup_entry+0x28/0x60
 rest_init+0xc8/0xe0
 arch_call_rest_init+0x10/0x1c
 start_kernel+0x694/0x6d4
 __primary_switched+0xa4/0xac

Fixes: 1f7c516600 ("usb: gadget: Add xilinx usb2 device support")
Reported-by: kernel test robot <lkp@intel.com>
Closes: https://lore.kernel.org/all/202209020044.CX2PfZzM-lkp@intel.com/
Cc: stable@vger.kernel.org
Signed-off-by: Piyush Mehta <piyush.mehta@amd.com>
Link: https://lore.kernel.org/r/20230929121514.13475-1-piyush.mehta@amd.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2023-10-02 14:26:36 +02:00
Xiaolei Wang
9f35d612da usb: cdns3: Modify the return value of cdns_set_active () to void when CONFIG_PM_SLEEP is disabled
The return type of cdns_set_active () is inconsistent
depending on whether CONFIG_PM_SLEEP is enabled, so the
return value is modified to void type.

Reported-by: Pavel Machek <pavel@denx.de>
Closes: https://lore.kernel.org/all/ZP7lIKUzD68XA91j@duo.ucw.cz/
Fixes: 2319b9c87f ("usb: cdns3: Put the cdns set active part outside the spin lock")
Cc: stable@vger.kernel.org
Signed-off-by: Xiaolei Wang <xiaolei.wang@windriver.com>
Reviewed-by: Pavel Machek <pavel@denx.de>
Reviewed-by: Roger Quadros <rogerq@kernel.org>
Acked-by: Peter Chen <peter.chen@kernel.org>
Link: https://lore.kernel.org/r/20230926075333.1791011-1-xiaolei.wang@windriver.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2023-10-02 14:25:39 +02:00
Thinh Nguyen
8bea147dfd usb: dwc3: Soft reset phy on probe for host
When there's phy initialization, we need to initiate a soft-reset
sequence. That's done through USBCMD.HCRST in the xHCI driver and its
initialization, However, the dwc3 driver may modify core configs before
the soft-reset. This may result in some connection instability. So,
ensure the phy is ready before the controller updates the GCTL.PRTCAPDIR
or other settings by issuing phy soft-reset.

Note that some host-mode configurations may not expose device registers
to initiate the controller soft-reset (via DCTL.CoreSftRst). So we reset
through GUSB3PIPECTL and GUSB2PHYCFG instead.

Cc: stable@vger.kernel.org
Fixes: e835c0a4e2 ("usb: dwc3: don't reset device side if dwc3 was configured as host-only")
Reported-by: Kenta Sato <tosainu.maple@gmail.com>
Closes: https://lore.kernel.org/linux-usb/ZPUciRLUcjDywMVS@debian.me/
Signed-off-by: Thinh Nguyen <Thinh.Nguyen@synopsys.com>
Tested-by: Kenta Sato <tosainu.maple@gmail.com>
Link: https://lore.kernel.org/r/70aea513215d273669152696cc02b20ddcdb6f1a.1694564261.git.Thinh.Nguyen@synopsys.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2023-10-02 14:04:12 +02:00
Ricardo Cañuelo
f74a7afc22 usb: hub: Guard against accesses to uninitialized BOS descriptors
Many functions in drivers/usb/core/hub.c and drivers/usb/core/hub.h
access fields inside udev->bos without checking if it was allocated and
initialized. If usb_get_bos_descriptor() fails for whatever
reason, udev->bos will be NULL and those accesses will result in a
crash:

BUG: kernel NULL pointer dereference, address: 0000000000000018
PGD 0 P4D 0
Oops: 0000 [#1] PREEMPT SMP NOPTI
CPU: 5 PID: 17818 Comm: kworker/5:1 Tainted: G W 5.15.108-18910-gab0e1cb584e1 #1 <HASH:1f9e 1>
Hardware name: Google Kindred/Kindred, BIOS Google_Kindred.12672.413.0 02/03/2021
Workqueue: usb_hub_wq hub_event
RIP: 0010:hub_port_reset+0x193/0x788
Code: 89 f7 e8 20 f7 15 00 48 8b 43 08 80 b8 96 03 00 00 03 75 36 0f b7 88 92 03 00 00 81 f9 10 03 00 00 72 27 48 8b 80 a8 03 00 00 <48> 83 78 18 00 74 19 48 89 df 48 8b 75 b0 ba 02 00 00 00 4c 89 e9
RSP: 0018:ffffab740c53fcf8 EFLAGS: 00010246
RAX: 0000000000000000 RBX: ffffa1bc5f678000 RCX: 0000000000000310
RDX: fffffffffffffdff RSI: 0000000000000286 RDI: ffffa1be9655b840
RBP: ffffab740c53fd70 R08: 00001b7d5edaa20c R09: ffffffffb005e060
R10: 0000000000000001 R11: 0000000000000000 R12: 0000000000000000
R13: ffffab740c53fd3e R14: 0000000000000032 R15: 0000000000000000
FS: 0000000000000000(0000) GS:ffffa1be96540000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000000000018 CR3: 000000022e80c005 CR4: 00000000003706e0
Call Trace:
hub_event+0x73f/0x156e
? hub_activate+0x5b7/0x68f
process_one_work+0x1a2/0x487
worker_thread+0x11a/0x288
kthread+0x13a/0x152
? process_one_work+0x487/0x487
? kthread_associate_blkcg+0x70/0x70
ret_from_fork+0x1f/0x30

Fall back to a default behavior if the BOS descriptor isn't accessible
and skip all the functionalities that depend on it: LPM support checks,
Super Speed capabilitiy checks, U1/U2 states setup.

Signed-off-by: Ricardo Cañuelo <ricardo.canuelo@collabora.com>
Cc: stable <stable@vger.kernel.org>
Link: https://lore.kernel.org/r/20230830100418.1952143-1-ricardo.canuelo@collabora.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2023-10-02 13:51:24 +02:00
Hui Liu
76750f1dca usb: typec: qcom: Update the logic of regulator enable and disable
Removed the call logic of disable and enable regulator
in reset function. Enable the regulator in qcom_pmic_typec_start
function and disable it in qcom_pmic_typec_stop function to
avoid unbalanced regulator disable warnings.

Fixes: a4422ff221 ("usb: typec: qcom: Add Qualcomm PMIC Type-C driver")
Cc: stable <stable@kernel.org>
Reviewed-by: Bryan O'Donoghue <bryan.odonoghue@linaro.org>
Acked-by: Bryan O'Donoghue <bryan.odonoghue@linaro.org>
Tested-by: Bryan O'Donoghue <bryan.odonoghue@linaro.org> # rb5
Signed-off-by: Hui Liu <quic_huliu@quicinc.com>
Reviewed-by: Heikki Krogerus <heikki.krogerus@linux.intel.com>
Link: https://lore.kernel.org/r/20230831-qcom-tcpc-v5-1-5e2661dc6c1d@quicinc.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2023-10-02 13:39:01 +02:00
Krishna Kurapati
427694cfaa usb: gadget: ncm: Handle decoding of multiple NTB's in unwrap call
When NCM is used with hosts like Windows PC, it is observed that there are
multiple NTB's contained in one usb request giveback. Since the driver
unwraps the obtained request data assuming only one NTB is present, we
loose the subsequent NTB's present resulting in data loss.

Fix this by checking the parsed block length with the obtained data
length in usb request and continue parsing after the last byte of current
NTB.

Cc: stable@vger.kernel.org
Fixes: 9f6ce4240a ("usb: gadget: f_ncm.c added")
Signed-off-by: Krishna Kurapati <quic_kriskura@quicinc.com>
Reviewed-by: Maciej Żenczykowski <maze@google.com>
Link: https://lore.kernel.org/r/20230927105858.12950-1-quic_kriskura@quicinc.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2023-10-02 13:38:10 +02:00
Xingxing Luo
33d7e37232 usb: musb: Get the musb_qh poniter after musb_giveback
When multiple threads are performing USB transmission, musb->lock will be
unlocked when musb_giveback is executed. At this time, qh may be released
in the dequeue process in other threads, resulting in a wild pointer, so
it needs to be here get qh again, and judge whether qh is NULL, and when
dequeue, you need to set qh to NULL.

Fixes: dbac5d07d1 ("usb: musb: host: don't start next rx urb if current one failed")
Cc: stable@vger.kernel.org
Signed-off-by: Xingxing Luo <xingxing.luo@unisoc.com>
Link: https://lore.kernel.org/r/20230919033055.14085-1-xingxing.luo@unisoc.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2023-10-02 13:37:57 +02:00
Xingxing Luo
6658a62e1d usb: musb: Modify the "HWVers" register address
musb HWVers rgister address is not 0x69, if we operate the
wrong address 0x69, it will cause a kernel crash, because
there is no register corresponding to this address in the
additional control register of musb. In fact, HWVers has
been defined in musb_register.h, and the name is
"MUSB_HWVERS", so We need to use this macro instead of 0x69.

Fixes: c2365ce5d5 ("usb: musb: replace hard coded registers with defines")
Cc: stable@vger.kernel.org
Signed-off-by: Xingxing Luo <xingxing.luo@unisoc.com>
Link: https://lore.kernel.org/r/20230922075929.31074-1-xingxing.luo@unisoc.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2023-10-02 13:37:08 +02:00
Leon Romanovsky
c99a7457e5 RDMA/mlx5: Remove not-used cache disable flag
During execution of mlx5_mkey_cache_cleanup(), there is a guarantee
that MR are not registered and/or destroyed. It means that we don't
need newly introduced cache disable flag.

Fixes: 374012b004 ("RDMA/mlx5: Fix mkey cache possible deadlock on cleanup")
Link: https://lore.kernel.org/r/c7e9c9f98c8ae4a7413d97d9349b29f5b0a23dbe.1695921626.git.leon@kernel.org
Signed-off-by: Leon Romanovsky <leonro@nvidia.com>
2023-10-02 14:32:44 +03:00
Pawel Laszczak
34f08eb0ba usb: cdnsp: Fixes issue with dequeuing not queued requests
Gadget ACM while unloading module try to dequeue not queued usb
request which causes the kernel to crash.
Patch adds extra condition to check whether usb request is processed
by CDNSP driver.

cc: stable@vger.kernel.org
Fixes: 3d82904559 ("usb: cdnsp: cdns3 Add main part of Cadence USBSSP DRD Driver")
Signed-off-by: Pawel Laszczak <pawell@cadence.com>
Acked-by: Peter Chen <peter.chen@kernel.org>
Link: https://lore.kernel.org/r/20230713081429.326660-1-pawell@cadence.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2023-10-02 13:19:13 +02:00
Greg Kroah-Hartman
57e50f4bad thunderbolt: Fixes for v6.6-rc3
This includes following fixes for v6.6-rc3:
 
   - Add a workaround for IOMMU faults for certain systems with Intel
     Maple Ridge
   - Make sure lane 1 is in CL0 before bonding lanes
   - Correct TMU mode initialization from hardware
   - Restart XDomain discovery handshake after failure.
 
 All these have been in linux-next with no reported issues.
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Merge tag 'thunderbolt-for-v6.6-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/westeri/thunderbolt into usb-linus

Mika writes:

thunderbolt: Fixes for v6.6-rc3

This includes following fixes for v6.6-rc3:

  - Add a workaround for IOMMU faults for certain systems with Intel
    Maple Ridge
  - Make sure lane 1 is in CL0 before bonding lanes
  - Correct TMU mode initialization from hardware
  - Restart XDomain discovery handshake after failure.

All these have been in linux-next with no reported issues.

* tag 'thunderbolt-for-v6.6-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/westeri/thunderbolt:
  thunderbolt: Restart XDomain discovery handshake after failure
  thunderbolt: Correct TMU mode initialization from hardware
  thunderbolt: Check that lane 1 is in CL0 before enabling lane bonding
  thunderbolt: Workaround an IOMMU fault on certain systems with Intel Maple Ridge
2023-10-02 13:16:11 +02:00
Greg Kroah-Hartman
fc5bf78b1a coresight: Fixes for v6.6
Couple of fixes for the CoreSight self-hosted tracing
 targeting v6.6. Includes :
 
  - Fix runtime warnings while reusing the TMC-ETR buffer
  - Fix (disable) warning when a large buffer is allocated in
    the flat mode.
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Merge tag 'coresight-fixes-v6.6-1' of git://git.kernel.org/pub/scm/linux/kernel/git/coresight/linux into char-misc-linus

Suzuki writes:

coresight: Fixes for v6.6

Couple of fixes for the CoreSight self-hosted tracing
targeting v6.6. Includes :

 - Fix runtime warnings while reusing the TMC-ETR buffer
 - Fix (disable) warning when a large buffer is allocated in
   the flat mode.

* tag 'coresight-fixes-v6.6-1' of git://git.kernel.org/pub/scm/linux/kernel/git/coresight/linux:
  coresight: tmc-etr: Disable warnings for allocation failures
  coresight: Fix run time warnings while reusing ETR buffer
2023-10-02 13:14:57 +02:00
Greg Kroah-Hartman
5d164a022b First set of Counter fixes for 6.6
The counter_get_ext() function would incorrectly refer to the first
 element of the extensions array to handle component array extensions
 when they are located at a different index; a fix is provided to index
 to the correct element in the array for this case. A fix for the
 microchip-tcb-capture is provided as well to correct an inverted
 internal GCLK logic for clock selection.
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Merge tag 'counter-fixes-for-6.6a' of git://git.kernel.org/pub/scm/linux/kernel/git/wbg/counter into char-misc-linus

William writes:

First set of Counter fixes for 6.6

The counter_get_ext() function would incorrectly refer to the first
element of the extensions array to handle component array extensions
when they are located at a different index; a fix is provided to index
to the correct element in the array for this case. A fix for the
microchip-tcb-capture is provided as well to correct an inverted
internal GCLK logic for clock selection.

* tag 'counter-fixes-for-6.6a' of git://git.kernel.org/pub/scm/linux/kernel/git/wbg/counter:
  counter: microchip-tcb-capture: Fix the use of internal GCLK logic
  counter: chrdev: fix getting array extensions
2023-10-02 13:13:15 +02:00
Mark Zhang
e0fe97efdb RDMA/cma: Initialize ib_sa_multicast structure to 0 when join
Initialize the structure to 0 so that it's fields won't have random
values. For example fields like rec.traffic_class (as well as
rec.flow_label and rec.sl) is used to generate the user AH through:
  cma_iboe_join_multicast
    cma_make_mc_event
      ib_init_ah_from_mcmember

And a random traffic_class causes a random IP DSCP in RoCEv2.

Fixes: b5de0c60cc ("RDMA/cma: Fix use after free race in roce multicast join")
Signed-off-by: Mark Zhang <markzhang@nvidia.com>
Link: https://lore.kernel.org/r/20230927090511.603595-1-markzhang@nvidia.com
Signed-off-by: Leon Romanovsky <leon@kernel.org>
2023-10-02 13:10:40 +03:00
Amir Goldstein
8542f17120 ovl: fix file reference leak when submitting aio
Commit 724768a393 ("ovl: fix incorrect fdput() on aio completion")
took a refcount on real file before submitting aio, but forgot to
avoid clearing FDPUT_FPUT from real.flags stack variable.
This can result in a file reference leak.

Fixes: 724768a393 ("ovl: fix incorrect fdput() on aio completion")
Reported-by: Gil Lev <contact@levgil.com>
Signed-off-by: Amir Goldstein <amir73il@gmail.com>
2023-10-02 13:08:31 +03:00
Luca Ceresoli
6bd01c4299 staging: media: tegra-video: fix infinite recursion regression
Since commit 9bf19fbf0c ("media: v4l: async: Rework internal lists"), aka
v6.6-rc1~97^2~198, probing the tegra-video VI driver causes infinite
recursion due tegra_vi_graph_parse_one() calling itself until:

[    1.571168] Insufficient stack space to handle exception!
...
[    1.591416] Internal error: kernel stack overflow: 0 [#1] PREEMPT SMP ARM
...
[    3.861013]  of_phandle_iterator_init from __of_parse_phandle_with_args+0x40/0xf0
[    3.868497]  __of_parse_phandle_with_args from of_fwnode_graph_get_remote_endpoint+0x68/0xa8
[    3.876938]  of_fwnode_graph_get_remote_endpoint from fwnode_graph_get_remote_port_parent+0x30/0x7c
[    3.885984]  fwnode_graph_get_remote_port_parent from tegra_vi_graph_parse_one+0x7c/0x224
[    3.894158]  tegra_vi_graph_parse_one from tegra_vi_graph_parse_one+0x144/0x224
[    3.901459]  tegra_vi_graph_parse_one from tegra_vi_graph_parse_one+0x144/0x224
[    3.908760]  tegra_vi_graph_parse_one from tegra_vi_graph_parse_one+0x144/0x224
[    3.916061]  tegra_vi_graph_parse_one from tegra_vi_graph_parse_one+0x144/0x224
...
[    4.857892]  tegra_vi_graph_parse_one from tegra_vi_graph_parse_one+0x144/0x224
[    4.865193]  tegra_vi_graph_parse_one from tegra_vi_graph_parse_one+0x144/0x224
[    4.872494]  tegra_vi_graph_parse_one from tegra_vi_init+0x574/0x6d4
[    4.878842]  tegra_vi_init from host1x_device_init+0x84/0x15c
[    4.884594]  host1x_device_init from host1x_video_probe+0xa0/0x114
[    4.890770]  host1x_video_probe from really_probe+0xe0/0x400

The reason is the mentioned commit changed tegra_vi_graph_find_entity() to
search for an entity in the done notifier list:

> @@ -1464,7 +1464,7 @@ tegra_vi_graph_find_entity(struct tegra_vi_channel *chan,
>  	struct tegra_vi_graph_entity *entity;
>  	struct v4l2_async_connection *asd;
>
> -	list_for_each_entry(asd, &chan->notifier.asc_list, asc_entry) {
> +	list_for_each_entry(asd, &chan->notifier.done_list, asc_entry) {
>  		entity = to_tegra_vi_graph_entity(asd);
>  		if (entity->asd.match.fwnode == fwnode)
>  			return entity;

This is not always correct, being tegra_vi_graph_find_entity() called in
three locations, in this order:

 1. tegra_vi_graph_parse_one()    -- called while probing
 2. tegra_vi_graph_notify_bound() -- the .bound notifier op
 3. tegra_vi_graph_build()        -- called in the .complete notifier op

Locations 1 and 2 are called before moving the entity from waiting_list to
done_list, thus they won't find what they are looking for in
done_list. Location 3 happens afterwards and thus it is not broken, however
it means tegra_vi_graph_find_entity() should not search in the same list
every time.

The error appears at step 1: tegra_vi_graph_parse_one() iterates
recursively until it finds the entity already notified, which now never
happens.

Fix by passing the specific notifier list pointer to
tegra_vi_graph_find_entity() instead of the channel, so each caller can
search in whatever list is correct.

Also improve the tegra_vi_graph_find_entity() comment.

Fixes: 9bf19fbf0c ("media: v4l: async: Rework internal lists")
Cc: Thierry Reding <thierry.reding@gmail.com>
Cc: Jonathan Hunter <jonathanh@nvidia.com>
Cc: Sowjanya Komatineni <skomatineni@nvidia.com>
Signed-off-by: Luca Ceresoli <luca.ceresoli@bootlin.com>
[Sakari Ailus: Wrapped some long lines.]
Signed-off-by: Sakari Ailus <sakari.ailus@linux.intel.com>
Signed-off-by: Hans Verkuil <hverkuil-cisco@xs4all.nl>
2023-10-02 10:02:53 +02:00
Arnd Bergmann
90d3c11af0 media: pci: intel: ivsc: select V4L2_FWNODE
Some missing select statements were already added back, but I ran into
another one that is missing:

ERROR: modpost: "v4l2_fwnode_endpoint_free" [drivers/media/pci/intel/ivsc/ivsc-csi.ko] undefined!
ERROR: modpost: "v4l2_fwnode_endpoint_alloc_parse" [drivers/media/pci/intel/ivsc/ivsc-csi.ko] undefined!
ERROR: modpost: "v4l2_fwnode_endpoint_parse" [drivers/media/pci/intel/ivsc/ivsc-csi.ko] undefined!

Fixes: 29006e196a ("media: pci: intel: ivsc: Add CSI submodule")
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
[Sakari Ailus: Drop V4L2_ASYNC dependency, it is implied now.]
Signed-off-by: Sakari Ailus <sakari.ailus@linux.intel.com>
Signed-off-by: Hans Verkuil <hverkuil-cisco@xs4all.nl>
2023-10-02 10:02:53 +02:00
Sakari Ailus
4670c8c3fb media: ipu-bridge: Fix Kconfig dependencies
The current Kconfig symbol dependencies allow having the following Kconfig
symbol values

	CONFIG_IPU_BRIDGE=m
	CONFIG_VIDEO_IPU3_CIO2=y
	CONFIG_CIO2_BRIDGE=n

This does not work as the IPU bridge API is conditional to
IS_ENABLED(CONFIG_IPU_BRIDGE). Fix this by changing the dependencies so
that CONFIG_IPU_BRIDGE can be separately selected.

The CONFIG_CIO2_BRIDGE symbol becomes redundant as a result and is
removed.

Fixes: 2545a2c02b ("media: ipu3-cio2: allow ipu_bridge to be a module again")
Suggested-by: Arnd Bergmann <arnd@kernel.org>
Signed-off-by: Sakari Ailus <sakari.ailus@linux.intel.com>
Signed-off-by: Hans Verkuil <hverkuil-cisco@xs4all.nl>
2023-10-02 10:02:53 +02:00
Christophe JAILLET
760d03f90b media: pxa_camera: Fix an error handling path in pxa_camera_probe()
The commit in Fixes has reordered the code and the error handling path.
However one 'goto' was missed.

Fix it and branch at the correct place in the error handling path.

Fixes: 5073d10cba ("media: pxa_camera: Register V4L2 device early")
Signed-off-by: Christophe JAILLET <christophe.jaillet@wanadoo.fr>
Signed-off-by: Sakari Ailus <sakari.ailus@linux.intel.com>
Signed-off-by: Hans Verkuil <hverkuil-cisco@xs4all.nl>
2023-10-02 10:02:53 +02:00
Duje Mihanović
f057511650 gpio: pxa: disable pinctrl calls for MMP_GPIO
Similarly to PXA3xx and MMP2, pinctrl-single isn't capable of setting
pin direction on MMP either.

Fixes: a770d94637 ("gpio: pxa: add pin control gpio direction and request")
Signed-off-by: Duje Mihanović <duje.mihanovic@skole.hr>
Reviewed-by: Andy Shevchenko <andy@kernel.org>
Signed-off-by: Bartosz Golaszewski <bartosz.golaszewski@linaro.org>
2023-10-02 09:18:53 +02:00
Kees Cook
6a70e5cbed sky2: Make sure there is at least one frag_addr available
In the pathological case of building sky2 with 16k PAGE_SIZE, the
frag_addr[] array would never be used, so the original code was correct
that size should be 0. But the compiler now gets upset with 0 size arrays
in places where it hasn't eliminated the code that might access such an
array (it can't figure out that in this case an rx skb with fragments
would never be created). To keep the compiler happy, make sure there is
at least 1 frag_addr in struct rx_ring_info:

   In file included from include/linux/skbuff.h:28,
                    from include/net/net_namespace.h:43,
                    from include/linux/netdevice.h:38,
                    from drivers/net/ethernet/marvell/sky2.c:18:
   drivers/net/ethernet/marvell/sky2.c: In function 'sky2_rx_unmap_skb':
   include/linux/dma-mapping.h:416:36: warning: array subscript i is outside array bounds of 'dma_addr_t[0]' {aka 'long long unsigned int[]'} [-Warray-bounds=]
     416 | #define dma_unmap_page(d, a, s, r) dma_unmap_page_attrs(d, a, s, r, 0)
         |                                    ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
   drivers/net/ethernet/marvell/sky2.c:1257:17: note: in expansion of macro 'dma_unmap_page'
    1257 |                 dma_unmap_page(&pdev->dev, re->frag_addr[i],
         |                 ^~~~~~~~~~~~~~
   In file included from drivers/net/ethernet/marvell/sky2.c:41:
   drivers/net/ethernet/marvell/sky2.h:2198:25: note: while referencing 'frag_addr'
    2198 |         dma_addr_t      frag_addr[ETH_JUMBO_MTU >> PAGE_SHIFT];
         |                         ^~~~~~~~~

With CONFIG_PAGE_SIZE_16KB=y, PAGE_SHIFT == 14, so:

  #define ETH_JUMBO_MTU   9000

causes "ETH_JUMBO_MTU >> PAGE_SHIFT" to be 0. Use "?: 1" to solve this build warning.

Cc: Mirko Lindner <mlindner@marvell.com>
Cc: Stephen Hemminger <stephen@networkplumber.org>
Cc: "David S. Miller" <davem@davemloft.net>
Cc: Eric Dumazet <edumazet@google.com>
Cc: Jakub Kicinski <kuba@kernel.org>
Cc: Paolo Abeni <pabeni@redhat.com>
Cc: netdev@vger.kernel.org
Reported-by: kernel test robot <lkp@intel.com>
Closes: https://lore.kernel.org/oe-kbuild-all/202309191958.UBw1cjXk-lkp@intel.com/
Reviewed-by: Alexander Lobakin <aleksander.lobakin@intel.com>
Signed-off-by: Kees Cook <keescook@chromium.org>
Reviewed-by: Gustavo A. R. Silva <gustavoars@kernel.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
2023-10-02 08:03:52 +01:00
Fabio Estevam
6ccf50d4d4 net: dsa: mv88e6xxx: Avoid EEPROM timeout when EEPROM is absent
Since commit 23d775f12d ("net: dsa: mv88e6xxx: Wait for EEPROM done
before HW reset") the following error is seen on a imx8mn board with
a 88E6320 switch:

mv88e6085 30be0000.ethernet-1:00: Timeout waiting for EEPROM done

This board does not have an EEPROM attached to the switch though.

This problem is well explained by Andrew Lunn:

"If there is an EEPROM, and the EEPROM contains a lot of data, it could
be that when we perform a hardware reset towards the end of probe, it
interrupts an I2C bus transaction, leaving the I2C bus in a bad state,
and future reads of the EEPROM do not work.

The work around for this was to poll the EEInt status and wait for it
to go true before performing the hardware reset.

However, we have discovered that for some boards which do not have an
EEPROM, EEInt never indicates complete. As a result,
mv88e6xxx_g1_wait_eeprom_done() spins for a second and then prints a
warning.

We probably need a different solution than calling
mv88e6xxx_g1_wait_eeprom_done(). The datasheet for 6352 documents the
EEPROM Command register:

bit 15 is:

  EEPROM Unit Busy. This bit must be set to a one to start an EEPROM
  operation (see EEOp below). Only one EEPROM operation can be
  executing at one time so this bit must be zero before setting it to
  a one.  When the requested EEPROM operation completes this bit will
  automatically be cleared to a zero. The transition of this bit from
  a one to a zero can be used to generate an interrupt (the EEInt in
  Global 1, offset 0x00).

and more interesting is bit 11:

  Register Loader Running. This bit is set to one whenever the
  register loader is busy executing instructions contained in the
  EEPROM."

Change to using mv88e6xxx_g2_eeprom_wait() to fix the timeout error
when the EEPROM chip is not present.

Fixes: 23d775f12d ("net: dsa: mv88e6xxx: Wait for EEPROM done before HW reset")
Suggested-by: Andrew Lunn <andrew@lunn.ch>
Signed-off-by: Fabio Estevam <festevam@denx.de>
Reviewed-by: Florian Fainelli <florian.fainelli@broadcom.com>
Reviewed-by: Andrew Lunn <andrew@lunn.ch>
Signed-off-by: David S. Miller <davem@davemloft.net>
2023-10-02 07:26:48 +01:00
Dinghao Liu
caa0578c1d ptp: ocp: Fix error handling in ptp_ocp_device_init
When device_add() fails, ptp_ocp_dev_release() will be called
after put_device(). Therefore, it seems that the
ptp_ocp_dev_release() before put_device() is redundant.

Fixes: 773bda9649 ("ptp: ocp: Expose various resources on the timecard.")
Signed-off-by: Dinghao Liu <dinghao.liu@zju.edu.cn>
Reviewed-by: Vadim Feodrenko <vadim.fedorenko@linux.dev>
Signed-off-by: David S. Miller <davem@davemloft.net>
2023-10-02 07:19:22 +01:00
Linus Torvalds
8a749fd1a8 Linux 6.6-rc4 2023-10-01 14:15:13 -07:00
Linus Torvalds
e81a2dabc3 Kbuild fixes for v6.6 (2nd)
- Fix the module compression with xz so the in-kernel decompressor works
 
  - Document a kconfig idiom to express an optional dependency between
    modules
 
  - Make modpost, when W=1 is given, detect broken drivers that reference
    .exit.* sections
 
  - Remove unused code
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Merge tag 'kbuild-fixes-v6.6-2' of git://git.kernel.org/pub/scm/linux/kernel/git/masahiroy/linux-kbuild

Pull Kbuild fixes from Masahiro Yamada:

 - Fix the module compression with xz so the in-kernel decompressor
   works

 - Document a kconfig idiom to express an optional dependency between
   modules

 - Make modpost, when W=1 is given, detect broken drivers that reference
   .exit.* sections

 - Remove unused code

* tag 'kbuild-fixes-v6.6-2' of git://git.kernel.org/pub/scm/linux/kernel/git/masahiroy/linux-kbuild:
  kbuild: remove stale code for 'source' symlink in packaging scripts
  modpost: Don't let "driver"s reference .exit.*
  vmlinux.lds.h: remove unused CPU_KEEP and CPU_DISCARD macros
  modpost: add missing else to the "of" check
  Documentation: kbuild: explain handling optional dependencies
  kbuild: Use CRC32 and a 1MiB dictionary for XZ compressed modules
2023-10-01 13:48:46 -07:00
Linus Torvalds
d2c5231581 Fourteen hotfixes, eleven of which are cc:stable. The remainder pertain
to issues which were introduced after 6.5.
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Merge tag 'mm-hotfixes-stable-2023-10-01-08-34' of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm

Pull misc fixes from Andrew Morton:
 "Fourteen hotfixes, eleven of which are cc:stable. The remainder
  pertain to issues which were introduced after 6.5"

* tag 'mm-hotfixes-stable-2023-10-01-08-34' of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm:
  Crash: add lock to serialize crash hotplug handling
  selftests/mm: fix awk usage in charge_reserved_hugetlb.sh and hugetlb_reparenting_test.sh that may cause error
  mm: mempolicy: keep VMA walk if both MPOL_MF_STRICT and MPOL_MF_MOVE are specified
  mm/damon/vaddr-test: fix memory leak in damon_do_test_apply_three_regions()
  mm, memcg: reconsider kmem.limit_in_bytes deprecation
  mm: zswap: fix potential memory corruption on duplicate store
  arm64: hugetlb: fix set_huge_pte_at() to work with all swap entries
  mm: hugetlb: add huge page size param to set_huge_pte_at()
  maple_tree: add MAS_UNDERFLOW and MAS_OVERFLOW states
  maple_tree: add mas_is_active() to detect in-tree walks
  nilfs2: fix potential use after free in nilfs_gccache_submit_read_data()
  mm: abstract moving to the next PFN
  mm: report success more often from filemap_map_folio_range()
  fs: binfmt_elf_efpic: fix personality for ELF-FDPIC
2023-10-01 13:33:25 -07:00
Linus Torvalds
8f63336941 Misc driver fix for 6.6-rc4
Here is a single, much requested, fix for a set of misc drivers to
 resolve a much reported regression in the -rc series that has also
 propagated back to the stable releases.  Sorry for the delay, lots of
 conference travel for a few weeks put me very far behind in patch
 wrangling.
 
 It has been reported by many to resolve the reported problem, and has
 been in linux-next with no reported issues.
 
 Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Merge tag 'char-misc-6.6-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/char-misc

Pull misc driver fix from Greg KH:
 "Here is a single, much requested, fix for a set of misc drivers to
  resolve a much reported regression in the -rc series that has also
  propagated back to the stable releases. Sorry for the delay, lots of
  conference travel for a few weeks put me very far behind in patch
  wrangling.

  It has been reported by many to resolve the reported problem, and has
  been in linux-next with no reported issues"

* tag 'char-misc-6.6-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/char-misc:
  misc: rtsx: Fix some platforms can not boot and move the l1ss judgment to probe
2023-10-01 12:50:04 -07:00
Linus Torvalds
3abd15e25f TTY / Serial driver fixes for 6.6-rc4
Here are 2 tty/serial driver fixes for 6.6-rc4 that resolve some
 reported regressions:
   - revert a n_gsm change that ended up causing problems
   - 8250_port fix for irq data
 
 both have been in linux-next for over a week with no reported problems.
 
 Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Merge tag 'tty-6.6-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/tty

Pull tty / serial driver fixes from Greg KH:
 "Here are two tty/serial driver fixes for 6.6-rc4 that resolve some
  reported regressions:

   - revert a n_gsm change that ended up causing problems

   - 8250_port fix for irq data

  both have been in linux-next for over a week with no reported
  problems"

* tag 'tty-6.6-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/tty:
  Revert "tty: n_gsm: fix UAF in gsm_cleanup_mux"
  serial: 8250_port: Check IRQ data before use
2023-10-01 12:44:45 -07:00
Jordan Rife
c889a99a21 net: prevent address rewrite in kernel_bind()
Similar to the change in commit 0bdf399342c5("net: Avoid address
overwrite in kernel_connect"), BPF hooks run on bind may rewrite the
address passed to kernel_bind(). This change

1) Makes a copy of the bind address in kernel_bind() to insulate
   callers.
2) Replaces direct calls to sock->ops->bind() in net with kernel_bind()

Link: https://lore.kernel.org/netdev/20230912013332.2048422-1-jrife@google.com/
Fixes: 4fbac77d2d ("bpf: Hooks for sys_bind")
Cc: stable@vger.kernel.org
Reviewed-by: Willem de Bruijn <willemb@google.com>
Signed-off-by: Jordan Rife <jrife@google.com>
Reviewed-by: Simon Horman <horms@kernel.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
2023-10-01 19:31:29 +01:00
Jordan Rife
86a7e0b69b net: prevent rewrite of msg_name in sock_sendmsg()
Callers of sock_sendmsg(), and similarly kernel_sendmsg(), in kernel
space may observe their value of msg_name change in cases where BPF
sendmsg hooks rewrite the send address. This has been confirmed to break
NFS mounts running in UDP mode and has the potential to break other
systems.

This patch:

1) Creates a new function called __sock_sendmsg() with same logic as the
   old sock_sendmsg() function.
2) Replaces calls to sock_sendmsg() made by __sys_sendto() and
   __sys_sendmsg() with __sock_sendmsg() to avoid an unnecessary copy,
   as these system calls are already protected.
3) Modifies sock_sendmsg() so that it makes a copy of msg_name if
   present before passing it down the stack to insulate callers from
   changes to the send address.

Link: https://lore.kernel.org/netdev/20230912013332.2048422-1-jrife@google.com/
Fixes: 1cedee13d2 ("bpf: Hooks for sys_sendmsg")
Cc: stable@vger.kernel.org
Reviewed-by: Willem de Bruijn <willemb@google.com>
Signed-off-by: Jordan Rife <jrife@google.com>
Reviewed-by: Simon Horman <horms@kernel.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
2023-10-01 19:31:29 +01:00
Jordan Rife
26297b4ce1 net: replace calls to sock->ops->connect() with kernel_connect()
commit 0bdf399342 ("net: Avoid address overwrite in kernel_connect")
ensured that kernel_connect() will not overwrite the address parameter
in cases where BPF connect hooks perform an address rewrite. This change
replaces direct calls to sock->ops->connect() in net with kernel_connect()
to make these call safe.

Link: https://lore.kernel.org/netdev/20230912013332.2048422-1-jrife@google.com/
Fixes: d74bad4e74 ("bpf: Hooks for sys_connect")
Cc: stable@vger.kernel.org
Reviewed-by: Willem de Bruijn <willemb@google.com>
Signed-off-by: Jordan Rife <jrife@google.com>
Reviewed-by: Simon Horman <horms@kernel.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
2023-10-01 19:31:29 +01:00
David Howells
9d4c75800f ipv4, ipv6: Fix handling of transhdrlen in __ip{,6}_append_data()
Including the transhdrlen in length is a problem when the packet is
partially filled (e.g. something like send(MSG_MORE) happened previously)
when appending to an IPv4 or IPv6 packet as we don't want to repeat the
transport header or account for it twice.  This can happen under some
circumstances, such as splicing into an L2TP socket.

The symptom observed is a warning in __ip6_append_data():

    WARNING: CPU: 1 PID: 5042 at net/ipv6/ip6_output.c:1800 __ip6_append_data.isra.0+0x1be8/0x47f0 net/ipv6/ip6_output.c:1800

that occurs when MSG_SPLICE_PAGES is used to append more data to an already
partially occupied skbuff.  The warning occurs when 'copy' is larger than
the amount of data in the message iterator.  This is because the requested
length includes the transport header length when it shouldn't.  This can be
triggered by, for example:

        sfd = socket(AF_INET6, SOCK_DGRAM, IPPROTO_L2TP);
        bind(sfd, ...); // ::1
        connect(sfd, ...); // ::1 port 7
        send(sfd, buffer, 4100, MSG_MORE);
        sendfile(sfd, dfd, NULL, 1024);

Fix this by only adding transhdrlen into the length if the write queue is
empty in l2tp_ip6_sendmsg(), analogously to how UDP does things.

l2tp_ip_sendmsg() looks like it won't suffer from this problem as it builds
the UDP packet itself.

Fixes: a32e0eec70 ("l2tp: introduce L2TPv3 IP encapsulation support for IPv6")
Reported-by: syzbot+62cbf263225ae13ff153@syzkaller.appspotmail.com
Link: https://lore.kernel.org/r/0000000000001c12b30605378ce8@google.com/
Suggested-by: Willem de Bruijn <willemdebruijn.kernel@gmail.com>
Signed-off-by: David Howells <dhowells@redhat.com>
cc: Eric Dumazet <edumazet@google.com>
cc: Willem de Bruijn <willemdebruijn.kernel@gmail.com>
cc: "David S. Miller" <davem@davemloft.net>
cc: David Ahern <dsahern@kernel.org>
cc: Paolo Abeni <pabeni@redhat.com>
cc: Jakub Kicinski <kuba@kernel.org>
cc: netdev@vger.kernel.org
cc: bpf@vger.kernel.org
cc: syzkaller-bugs@googlegroups.com
Reviewed-by: Eric Dumazet <edumazet@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2023-10-01 18:19:27 +01:00
Linus Torvalds
ec8c298121 Misc fixes: a kerneldoc build warning fix, add SRSO mitigation for
AMD-derived Hygon processors, and fix a SGX kernel crash in the
 page fault handler that can trigger when ksgxd races to reclaim
 the SECS special page, by making the SECS page unswappable.
 
 Signed-off-by: Ingo Molnar <mingo@kernel.org>
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Merge tag 'x86-urgent-2023-10-01' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip

Pull x86 fixes from Ingo Molnar:
 "Misc fixes: a kerneldoc build warning fix, add SRSO mitigation for
  AMD-derived Hygon processors, and fix a SGX kernel crash in the page
  fault handler that can trigger when ksgxd races to reclaim the SECS
  special page, by making the SECS page unswappable"

* tag 'x86-urgent-2023-10-01' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  x86/sgx: Resolves SECS reclaim vs. page fault for EAUG race
  x86/srso: Add SRSO mitigation for Hygon processors
  x86/kgdb: Fix a kerneldoc warning when build with W=1
2023-10-01 09:50:58 -07:00
Linus Torvalds
373ceff28e Fix a spurious kernel warning during CPU hotplug events that
may trigger when timer/hrtimer softirqs are pending, which
 are otherwise hotplug-safe and don't merit a warning.
 
 Signed-off-by: Ingo Molnar <mingo@kernel.org>
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Merge tag 'timers-urgent-2023-10-01' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip

Pull timer fix from Ingo Molnar:
 "Fix a spurious kernel warning during CPU hotplug events that may
  trigger when timer/hrtimer softirqs are pending, which are otherwise
  hotplug-safe and don't merit a warning"

* tag 'timers-urgent-2023-10-01' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  timers: Tag (hr)timer softirq as hotplug safe
2023-10-01 09:41:58 -07:00
Linus Torvalds
c5ecffe6d3 Fix a RT tasks related lockup/live-lock during CPU offlining.
Signed-off-by: Ingo Molnar <mingo@kernel.org>
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Merge tag 'sched-urgent-2023-10-01' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip

Pull scheduler fix from Ingo Molnar:
 "Fix a RT tasks related lockup/live-lock during CPU offlining"

* tag 'sched-urgent-2023-10-01' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  sched/rt: Fix live lock between select_fallback_rq() and RT push
2023-10-01 09:38:05 -07:00
Linus Torvalds
3a38c57a87 Misc fixes: work around an AMD microcode bug on certain models,
and fix kexec kernel PMI handlers on AMD systems that get loaded
 on older kernels that have an unexpected register state.
 
 Signed-off-by: Ingo Molnar <mingo@kernel.org>
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Merge tag 'perf-urgent-2023-10-01' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip

Pull perf event fixes from Ingo Molnar:
 "Misc fixes: work around an AMD microcode bug on certain models, and
  fix kexec kernel PMI handlers on AMD systems that get loaded on older
  kernels that have an unexpected register state"

* tag 'perf-urgent-2023-10-01' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  perf/x86/amd: Do not WARN() on every IRQ
  perf/x86/amd/core: Fix overflow reset on hotplug
2023-10-01 09:34:53 -07:00
Eric Dumazet
5baa0433a1 neighbour: fix data-races around n->output
n->output field can be read locklessly, while a writer
might change the pointer concurrently.

Add missing annotations to prevent load-store tearing.

Fixes: 1da177e4c3 ("Linux-2.6.12-rc2")
Signed-off-by: Eric Dumazet <edumazet@google.com>
Reviewed-by: David Ahern <dsahern@kernel.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
2023-10-01 17:14:37 +01:00
Eric Dumazet
25563b581b net: fix possible store tearing in neigh_periodic_work()
While looking at a related syzbot report involving neigh_periodic_work(),
I found that I forgot to add an annotation when deleting an
RCU protected item from a list.

Readers use rcu_deference(*np), we need to use either
rcu_assign_pointer() or WRITE_ONCE() on writer side
to prevent store tearing.

I use rcu_assign_pointer() to have lockdep support,
this was the choice made in neigh_flush_dev().

Fixes: 767e97e1e0 ("neigh: RCU conversion of struct neighbour")
Signed-off-by: Eric Dumazet <edumazet@google.com>
Reviewed-by: David Ahern <dsahern@kernel.org>
Reviewed-by: Simon Horman <horms@kernel.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
2023-10-01 16:29:06 +01:00