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Author SHA1 Message Date
Kishon Vijay Abraham I eb91224e47 dmaengine: ti: k3-udma: Set r/tchan or rflow to NULL if request fail 
udma_get_*() checks if rchan/tchan/rflow is already allocated by checking
if it has a NON NULL value. For the error cases, rchan/tchan/rflow will
have error value and udma_get_*() considers this as already allocated
(PASS) since the error values are NON NULL. This results in NULL pointer
dereference error while de-referencing rchan/tchan/rflow.

Reset the value of rchan/tchan/rflow to NULL if a channel request fails.

CC: stable@vger.kernel.org
Acked-by: Peter Ujfalusi <peter.ujfalusi@gmail.com>
Signed-off-by: Kishon Vijay Abraham I <kishon@ti.com>
Link: https://lore.kernel.org/r/20211031032411.27235-3-kishon@ti.com
Signed-off-by: Vinod Koul <vkoul@kernel.org>
 2021-11-09 11:24:06 +05:30
Kishon Vijay Abraham I 5c6c6d60e4 dmaengine: ti: k3-udma: Set bchan to NULL if a channel request fail 
bcdma_get_*() checks if bchan is already allocated by checking if it
has a NON NULL value. For the error cases, bchan will have error value
and bcdma_get_*() considers this as already allocated (PASS) since the
error values are NON NULL. This results in NULL pointer dereference
error while de-referencing bchan.

Reset the value of bchan to NULL if a channel request fails.

CC: stable@vger.kernel.org
Acked-by: Peter Ujfalusi <peter.ujfalusi@gmail.com>
Signed-off-by: Kishon Vijay Abraham I <kishon@ti.com>
Link: https://lore.kernel.org/r/20211031032411.27235-2-kishon@ti.com
Signed-off-by: Vinod Koul <vkoul@kernel.org>
 2021-11-09 11:24:06 +05:30
Arnd Bergmann 2498363310 dmaengine: stm32-dma: avoid 64-bit division in stm32_dma_get_max_width 
Using the % operator on a 64-bit variable is expensive and can
cause a link failure:

arm-linux-gnueabi-ld: drivers/dma/stm32-dma.o: in function `stm32_dma_get_max_width':
stm32-dma.c:(.text+0x170): undefined reference to `__aeabi_uldivmod'
arm-linux-gnueabi-ld: drivers/dma/stm32-dma.o: in function `stm32_dma_set_xfer_param':
stm32-dma.c:(.text+0x1cd4): undefined reference to `__aeabi_uldivmod'

As we know that we just want to check the alignment in
stm32_dma_get_max_width(), there is no need for a full division, and
using a simple mask is a faster replacement.

Same in stm32_dma_set_xfer_param(), change this to only allow burst
transfers if the address is a multiple of the length.
stm32_dma_get_best_burst just after will take buf_len into account to fix
burst in case of misalignment.

Fixes: b20fd5fa31 ("dmaengine: stm32-dma: fix stm32_dma_get_max_width")
Reported-by: kernel test robot <lkp@intel.com>
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Amelie Delaunay <amelie.delaunay@foss.st.com>
Link: https://lore.kernel.org/r/20211103153312.41483-1-amelie.delaunay@foss.st.com
Signed-off-by: Vinod Koul <vkoul@kernel.org>
 2021-11-09 11:20:35 +05:30
Jussi Maki b2c4618162 bpf, sockmap: sk_skb data_end access incorrect when src_reg = dst_reg 
The current conversion of skb->data_end reads like this:

  ; data_end = (void*)(long)skb->data_end;
   559: (79) r1 = *(u64 *)(r2 +200)   ; r1  = skb->data
   560: (61) r11 = *(u32 *)(r2 +112)  ; r11 = skb->len
   561: (0f) r1 += r11
   562: (61) r11 = *(u32 *)(r2 +116)
   563: (1f) r1 -= r11

But similar to the case in 84f44df664 ("bpf: sock_ops sk access may stomp
registers when dst_reg = src_reg"), the code will read an incorrect skb->len
when src == dst. In this case we end up generating this xlated code:

  ; data_end = (void*)(long)skb->data_end;
   559: (79) r1 = *(u64 *)(r1 +200)   ; r1  = skb->data
   560: (61) r11 = *(u32 *)(r1 +112)  ; r11 = (skb->data)->len
   561: (0f) r1 += r11
   562: (61) r11 = *(u32 *)(r1 +116)
   563: (1f) r1 -= r11

... where line 560 is the reading 4B of (skb->data + 112) instead of the
intended skb->len Here the skb pointer in r1 gets set to skb->data and the
later deref for skb->len ends up following skb->data instead of skb.

This fixes the issue similarly to the patch mentioned above by creating an
additional temporary variable and using to store the register when dst_reg =
src_reg. We name the variable bpf_temp_reg and place it in the cb context for
sk_skb. Then we restore from the temp to ensure nothing is lost.

Fixes: 16137b09a6 ("bpf: Compute data_end dynamically with JIT code")
Signed-off-by: Jussi Maki <joamaki@gmail.com>
Signed-off-by: John Fastabend <john.fastabend@gmail.com>
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
Reviewed-by: Jakub Sitnicki <jakub@cloudflare.com>
Link: https://lore.kernel.org/bpf/20211103204736.248403-6-john.fastabend@gmail.com
 2021-11-09 01:05:34 +01:00
John Fastabend e0dc3b93bd bpf: sockmap, strparser, and tls are reusing qdisc_skb_cb and colliding 
Strparser is reusing the qdisc_skb_cb struct to stash the skb message handling
progress, e.g. offset and length of the skb. First this is poorly named and
inherits a struct from qdisc that doesn't reflect the actual usage of cb[] at
this layer.

But, more importantly strparser is using the following to access its metadata.

  (struct _strp_msg *)((void *)skb->cb + offsetof(struct qdisc_skb_cb, data))

Where _strp_msg is defined as:

  struct _strp_msg {
        struct strp_msg            strp;                 /*     0     8 */
        int                        accum_len;            /*     8     4 */

        /* size: 12, cachelines: 1, members: 2 */
        /* last cacheline: 12 bytes */
  };

So we use 12 bytes of ->data[] in struct. However in BPF code running parser
and verdict the user has read capabilities into the data[] array as well. Its
not too problematic, but we should not be exposing internal state to BPF
program. If its really needed then we can use the probe_read() APIs which allow
reading kernel memory. And I don't believe cb[] layer poses any API breakage by
moving this around because programs can't depend on cb[] across layers.

In order to fix another issue with a ctx rewrite we need to stash a temp
variable somewhere. To make this work cleanly this patch builds a cb struct
for sk_skb types called sk_skb_cb struct. Then we can use this consistently
in the strparser, sockmap space. Additionally we can start allowing ->cb[]
write access after this.

Fixes: 604326b41a ("bpf, sockmap: convert to generic sk_msg interface")
Signed-off-by: John Fastabend <john.fastabend@gmail.com>
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
Tested-by: Jussi Maki <joamaki@gmail.com>
Reviewed-by: Jakub Sitnicki <jakub@cloudflare.com>
Link: https://lore.kernel.org/bpf/20211103204736.248403-5-john.fastabend@gmail.com
 2021-11-09 01:05:28 +01:00
John Fastabend c5d2177a72 bpf, sockmap: Fix race in ingress receive verdict with redirect to self 
A socket in a sockmap may have different combinations of programs attached
depending on configuration. There can be no programs in which case the socket
acts as a sink only. There can be a TX program in this case a BPF program is
attached to sending side, but no RX program is attached. There can be an RX
program only where sends have no BPF program attached, but receives are hooked
with BPF. And finally, both TX and RX programs may be attached. Giving us the
permutations:

 None, Tx, Rx, and TxRx

To date most of our use cases have been TX case being used as a fast datapath
to directly copy between local application and a userspace proxy. Or Rx cases
and TxRX applications that are operating an in kernel based proxy. The traffic
in the first case where we hook applications into a userspace application looks
like this:

  AppA  redirect   AppB
   Tx <-----------> Rx
   |                |
   +                +
   TCP <--> lo <--> TCP

In this case all traffic from AppA (after 3whs) is copied into the AppB
ingress queue and no traffic is ever on the TCP recieive_queue.

In the second case the application never receives, except in some rare error
cases, traffic on the actual user space socket. Instead the send happens in
the kernel.

           AppProxy       socket pool
       sk0 ------------->{sk1,sk2, skn}
        ^                      |
        |                      |
        |                      v
       ingress              lb egress
       TCP                  TCP

Here because traffic is never read off the socket with userspace recv() APIs
there is only ever one reader on the sk receive_queue. Namely the BPF programs.

However, we've started to introduce a third configuration where the BPF program
on receive should process the data, but then the normal case is to push the
data into the receive queue of AppB.

       AppB
       recv()                (userspace)
     -----------------------
       tcp_bpf_recvmsg()     (kernel)
         |             |
         |             |
         |             |
       ingress_msgQ    |
         |             |
       RX_BPF          |
         |             |
         v             v
       sk->receive_queue

This is different from the App{A,B} redirect because traffic is first received
on the sk->receive_queue.

Now for the issue. The tcp_bpf_recvmsg() handler first checks the ingress_msg
queue for any data handled by the BPF rx program and returned with PASS code
so that it was enqueued on the ingress msg queue. Then if no data exists on
that queue it checks the socket receive queue. Unfortunately, this is the same
receive_queue the BPF program is reading data off of. So we get a race. Its
possible for the recvmsg() hook to pull data off the receive_queue before the
BPF hook has a chance to read it. It typically happens when an application is
banging on recv() and getting EAGAINs. Until they manage to race with the RX
BPF program.

To fix this we note that before this patch at attach time when the socket is
loaded into the map we check if it needs a TX program or just the base set of
proto bpf hooks. Then it uses the above general RX hook regardless of if we
have a BPF program attached at rx or not. This patch now extends this check to
handle all cases enumerated above, TX, RX, TXRX, and none. And to fix above
race when an RX program is attached we use a new hook that is nearly identical
to the old one except now we do not let the recv() call skip the RX BPF program.
Now only the BPF program pulls data from sk->receive_queue and recv() only
pulls data from the ingress msgQ post BPF program handling.

With this resolved our AppB from above has been up and running for many hours
without detecting any errors. We do this by correlating counters in RX BPF
events and the AppB to ensure data is never skipping the BPF program. Selftests,
was not able to detect this because we only run them for a short period of time
on well ordered send/recvs so we don't get any of the noise we see in real
application environments.

Fixes: 51199405f9 ("bpf: skb_verdict, support SK_PASS on RX BPF path")
Signed-off-by: John Fastabend <john.fastabend@gmail.com>
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
Tested-by: Jussi Maki <joamaki@gmail.com>
Reviewed-by: Jakub Sitnicki <jakub@cloudflare.com>
Link: https://lore.kernel.org/bpf/20211103204736.248403-4-john.fastabend@gmail.com
 2021-11-09 00:58:26 +01:00
John Fastabend b8b8315e39 bpf, sockmap: Remove unhash handler for BPF sockmap usage 
We do not need to handle unhash from BPF side we can simply wait for the
close to happen. The original concern was a socket could transition from
ESTABLISHED state to a new state while the BPF hook was still attached.
But, we convinced ourself this is no longer possible and we also improved
BPF sockmap to handle listen sockets so this is no longer a problem.

More importantly though there are cases where unhash is called when data is
in the receive queue. The BPF unhash logic will flush this data which is
wrong. To be correct it should keep the data in the receive queue and allow
a receiving application to continue reading the data. This may happen when
tcp_abort() is received for example. Instead of complicating the logic in
unhash simply moving all this to tcp_close() hook solves this.

Fixes: 51199405f9 ("bpf: skb_verdict, support SK_PASS on RX BPF path")
Signed-off-by: John Fastabend <john.fastabend@gmail.com>
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
Tested-by: Jussi Maki <joamaki@gmail.com>
Reviewed-by: Jakub Sitnicki <jakub@cloudflare.com>
Link: https://lore.kernel.org/bpf/20211103204736.248403-3-john.fastabend@gmail.com
 2021-11-09 00:57:19 +01:00
John Fastabend 40a34121ac bpf, sockmap: Use stricter sk state checks in sk_lookup_assign 
In order to fix an issue with sockets in TCP sockmap redirect cases we plan
to allow CLOSE state sockets to exist in the sockmap. However, the check in
bpf_sk_lookup_assign() currently only invalidates sockets in the
TCP_ESTABLISHED case relying on the checks on sockmap insert to ensure we
never SOCK_CLOSE state sockets in the map.

To prepare for this change we flip the logic in bpf_sk_lookup_assign() to
explicitly test for the accepted cases. Namely, a tcp socket in TCP_LISTEN
or a udp socket in TCP_CLOSE state. This also makes the code more resilent
to future changes.

Suggested-by: Jakub Sitnicki <jakub@cloudflare.com>
Signed-off-by: John Fastabend <john.fastabend@gmail.com>
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
Reviewed-by: Jakub Sitnicki <jakub@cloudflare.com>
Link: https://lore.kernel.org/bpf/20211103204736.248403-2-john.fastabend@gmail.com
 2021-11-09 00:56:35 +01:00
Linus Torvalds d2f38a3c65 - Fix-ups 
- Standardise *_exit() and *_remove() return values; ili9320, vgg2432a4
 
  - Bug Fixes
    - Do not override maximum brightness; backlight
    - Propagate errors from get_brightness(); backlight
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Merge tag 'backlight-next-5.16' of git://git.kernel.org/pub/scm/linux/kernel/git/lee/backlight

Pull backlight updates from Lee Jones:
 "Fix-ups:
   - Standardise *_exit() and *_remove() return values in ili9320 and
     vgg2432a4

  Bug Fixes:
   - Do not override maximum brightness
   - Propagate errors from get_brightness()"

* tag 'backlight-next-5.16' of git://git.kernel.org/pub/scm/linux/kernel/git/lee/backlight:
  video: backlight: ili9320: Make ili9320_remove() return void
  backlight: Propagate errors from get_brightness()
  video: backlight: Drop maximum brightness override for brightness zero
 2021-11-08 12:21:28 -08:00
Linus Torvalds 3a9b0a46e1 - Remove Drivers 
- Remove support for TI TPS80031/TPS80032 PMICs
 
  - New Device Support
    - Add support for Magnetic Reader to TI AM335x
    - Add support for DA9063_EA to Dialog DA9063
    - Add support for SC2730 PMIC to Spreadtrum SC27xx
    - Add support for MacBookPro16,2 ICL-N UART Intel LPSS PCI
    - Add support for lots of new PMICS in QCom SPMI PMIC
    - Add support for ADC to Diolan DLN2
 
  - New Functionality
    - Add support for Power Off to Rockchip RK817
 
  - Fix-ups
    - Simplify Regmap passing to child devices; hi6421-spmi-pmic
    - SPDX licensing updates; ti_am335x_tscadc
    - Improve error handling; ti_am335x_tscadc
    - Expedite clock search; ti_am335x_tscadc
    - Generic simplifications; ti_am335x_tscadc
    - Use generic macros/defines; ti_am335x_tscadc
    - Remove unused code; ti_am335x_tscadc, cros_ec_dev
    - Convert to GPIOD; wcd934x
    - Add namespacing; ti_am335x_tscadc
    - Restrict compilation to relevant arches; intel_pmt
    - Provide better description/documentation; exynos_lpass
    - Add SPI device ID table; altera-a10sr, motorola-cpcap, sprd-sc27xx-spi
    - Change IRQ handling; qcom-pm8xxx
    - Split out I2C and SPI code; arizona
    - Explicitly include used headers; altera-a10sr
    - Convert sysfs show() function to; sysfs_emit
    - Standardise *_exit() and *_remove() return values; mc13xxx, stmpe, tps65912
    - Trivial (style/spelling/whitespace) fixups; ti_am335x_tscadc, qcom-spmi-pmic,
                                                  max77686-private
    - Device Tree fix-ups; ti,am3359-tscadc, samsung,s2mps11, samsung,s2mpa01,
                           samsung,s5m8767, brcm,misc, brcm,cru, syscon, qcom,tcsr,
 			  xylon,logicvc, max77686, x-powers,ac100, x-powers,axp152,
 			  x-powers,axp209-gpio, syscon, qcom,spmi-pmic
 
  - Bug Fixes
    - Balance refcounting (get/put); ti_am335x_tscadc, mfd-core
    - Fix IRQ trigger type; sec-irq, max77693, max14577
    - Repair off-by-one; altera-sysmgr
    - Add explicit 'select MFD_CORE' to MFD_SIMPLE_MFD_I2C
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Merge tag 'mfd-next-5.16' of git://git.kernel.org/pub/scm/linux/kernel/git/lee/mfd

Pull MFD updates from Lee Jones:
 "Removed Drivers:
   - Remove support for TI TPS80031/TPS80032 PMICs

  New Device Support:
   - Add support for Magnetic Reader to TI AM335x
   - Add support for DA9063_EA to Dialog DA9063
   - Add support for SC2730 PMIC to Spreadtrum SC27xx
   - Add support for MacBookPro16,2 ICL-N UART Intel LPSS PCI
   - Add support for lots of new PMICS in QCom SPMI PMIC
   - Add support for ADC to Diolan DLN2

  New Functionality:
   - Add support for Power Off to Rockchip RK817

  Fix-ups:
   - Simplify Regmap passing to child devices in hi6421-spmi-pmic
   - SPDX licensing updates in ti_am335x_tscadc
   - Improve error handling in ti_am335x_tscadc
   - Expedite clock search in ti_am335x_tscadc
   - Generic simplifications in ti_am335x_tscadc
   - Use generic macros/defines in ti_am335x_tscadc
   - Remove unused code in ti_am335x_tscadc, cros_ec_dev
   - Convert to GPIOD in wcd934x
   - Add namespacing in ti_am335x_tscadc
   - Restrict compilation to relevant arches in intel_pmt
   - Provide better description/documentation in exynos_lpass
   - Add SPI device ID table in altera-a10sr, motorola-cpcap,
     sprd-sc27xx-spi
   - Change IRQ handling in qcom-pm8xxx
   - Split out I2C and SPI code in arizona
   - Explicitly include used headers in altera-a10sr
   - Convert sysfs show() function to in sysfs_emit
   - Standardise *_exit() and *_remove() return values in mc13xxx,
     stmpe, tps65912
   - Trivial (style/spelling/whitespace) fixups in ti_am335x_tscadc,
     qcom-spmi-pmic, max77686-private
   - Device Tree fix-ups in ti,am3359-tscadc, samsung,s2mps11,
     samsung,s2mpa01, samsung,s5m8767, brcm,misc, brcm,cru, syscon,
     qcom,tcsr, xylon,logicvc, max77686, x-powers,ac100,
     x-powers,axp152, x-powers,axp209-gpio, syscon, qcom,spmi-pmic

  Bug Fixes:
   - Balance refcounting (get/put) in ti_am335x_tscadc, mfd-core
   - Fix IRQ trigger type in sec-irq, max77693, max14577
   - Repair off-by-one in altera-sysmgr
   - Add explicit 'select MFD_CORE' to MFD_SIMPLE_MFD_I2C"

* tag 'mfd-next-5.16' of git://git.kernel.org/pub/scm/linux/kernel/git/lee/mfd: (95 commits)
  mfd: simple-mfd-i2c: Select MFD_CORE to fix build error
  mfd: tps80031: Remove driver
  mfd: max77686: Correct tab-based alignment of register addresses
  mfd: wcd934x: Replace legacy gpio interface for gpiod
  dt-bindings: mfd: qcom: pm8xxx: Add pm8018 compatible
  mfd: dln2: Add cell for initializing DLN2 ADC
  mfd: qcom-spmi-pmic: Add missing PMICs supported by socinfo
  mfd: qcom-spmi-pmic: Document ten more PMICs in the binding
  mfd: qcom-spmi-pmic: Sort compatibles in the driver
  mfd: qcom-spmi-pmic: Sort the compatibles in the binding
  mfd: janz-cmoio: Replace snprintf in show functions with sysfs_emit
  mfd: altera-a10sr: Include linux/module.h
  mfd: tps65912: Make tps65912_device_exit() return void
  mfd: stmpe: Make stmpe_remove() return void
  mfd: mc13xxx: Make mc13xxx_common_exit() return void
  dt-bindings: mfd: syscon: Add samsung,exynosautov9-sysreg compatible
  mfd: altera-sysmgr: Fix a mistake caused by resource_size conversion
  dt-bindings: gpio: Convert X-Powers AXP209 GPIO binding to a schema
  dt-bindings: mfd: syscon: Add rk3368 QoS register compatible
  mfd: arizona: Split of_match table into I2C and SPI versions
  ...
 2021-11-08 12:07:52 -08:00
Linus Torvalds d20f7a09e5 gpio updates for v5.16 
- new driver: gpio-modepin (plus relevant change in zynqmp firmware)
 - add interrupt support to gpio-virtio
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   accessing IRQ structures directly
 - code shrink in gpio-xilinx
 - add interrupt to gpio-mlxbf2 (and include the removal of custom interrupt
   code from the mellanox ethernet driver)
 - support multiple interrupts per bank in gpio-tegra186 (and force one interrupt
   per bank in older models)
 - fix GPIO line IRQ offset calculation in gpio-realtek-otto
 - drop unneeded MODULE_ALIAS expansions in multiple drivers
 - code cleanup in gpio-aggregator
 - minor improvements in gpio-max730x and gpio-mc33880
 - Kconfig cleanups
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Merge tag 'gpio-updates-for-v5.16' of git://git.kernel.org/pub/scm/linux/kernel/git/brgl/linux

Pull gpio updates from Bartosz Golaszewski:
 "We have a single new driver, new features in others and some cleanups
  all over the place.

  Nothing really stands out and it is all relatively small.

   - new driver: gpio-modepin (plus relevant change in zynqmp firmware)

   - add interrupt support to gpio-virtio

   - enable the 'gpio-line-names' property in the DT bindings for
     gpio-rockchip

   - use the subsystem helpers where applicable in gpio-uniphier instead
     of accessing IRQ structures directly

   - code shrink in gpio-xilinx

   - add interrupt to gpio-mlxbf2 (and include the removal of custom
     interrupt code from the mellanox ethernet driver)

   - support multiple interrupts per bank in gpio-tegra186 (and force
     one interrupt per bank in older models)

   - fix GPIO line IRQ offset calculation in gpio-realtek-otto

   - drop unneeded MODULE_ALIAS expansions in multiple drivers

   - code cleanup in gpio-aggregator

   - minor improvements in gpio-max730x and gpio-mc33880

   - Kconfig cleanups"

* tag 'gpio-updates-for-v5.16' of git://git.kernel.org/pub/scm/linux/kernel/git/brgl/linux:
  virtio_gpio: drop packed attribute
  gpio: virtio: Add IRQ support
  gpio: realtek-otto: fix GPIO line IRQ offset
  gpio: clean up Kconfig file
  net: mellanox: mlxbf_gige: Replace non-standard interrupt handling
  gpio: mlxbf2: Introduce IRQ support
  gpio: mc33880: Drop if with an always false condition
  gpio: max730x: Make __max730x_remove() return void
  gpio: aggregator: Wrap access to gpiochip_fwd.tmp[]
  gpio: modepin: Add driver support for modepin GPIO controller
  dt-bindings: gpio: zynqmp: Add binding documentation for modepin
  firmware: zynqmp: Add MMIO read and write support for PS_MODE pin
  gpio: tps65218: drop unneeded MODULE_ALIAS
  gpio: max77620: drop unneeded MODULE_ALIAS
  gpio: xilinx: simplify getting .driver_data
  gpio: tegra186: Support multiple interrupts per bank
  gpio: tegra186: Force one interrupt per bank
  gpio: uniphier: Use helper functions to get private data from IRQ data
  gpio: uniphier: Use helper function to get IRQ hardware number
  dt-bindings: gpio: add gpio-line-names to rockchip,gpio-bank.yaml
 2021-11-08 11:55:21 -08:00
Linus Torvalds dd72945c43 cxl for v5.16 
- Fix support for platforms that do not enumerate every ACPI0016 (CXL
   Host Bridge) in the CHBS (ACPI Host Bridge Structure).
 
 - Introduce a common pci_find_dvsec_capability() helper, clean up open
   coded implementations in various drivers.
 
 - Add 'cxl_test' for regression testing CXL subsystem ABIs. 'cxl_test'
   is a module built from tools/testing/cxl/ that mocks up a CXL topology
   to augment the nascent support for emulation of CXL devices in QEMU.
 
 - Convert libnvdimm to use the uuid API.
 
 - Complete the definition of CXL namespace labels in libnvdimm.
 
 - Tunnel libnvdimm label operations from nd_ioctl() back to the CXL
   mailbox driver. Enable 'ndctl {read,write}-labels' for CXL.
 
 - Continue to sort and refactor functionality into distinct driver and
   core-infrastructure buckets. For example, mailbox handling is now a
   generic core capability consumed by the PCI and cxl_test drivers.
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Merge tag 'cxl-for-5.16' of git://git.kernel.org/pub/scm/linux/kernel/git/cxl/cxl

Pull cxl updates from Dan Williams:
 "More preparation and plumbing work in the CXL subsystem.

  From an end user perspective the highlight here is lighting up the CXL
  Persistent Memory related commands (label read / write) with the
  generic ioctl() front-end in LIBNVDIMM.

  Otherwise, the ability to instantiate new persistent and volatile
  memory regions is still on track for v5.17.

  Summary:

   - Fix support for platforms that do not enumerate every ACPI0016 (CXL
     Host Bridge) in the CHBS (ACPI Host Bridge Structure).

   - Introduce a common pci_find_dvsec_capability() helper, clean up
     open coded implementations in various drivers.

   - Add 'cxl_test' for regression testing CXL subsystem ABIs.
     'cxl_test' is a module built from tools/testing/cxl/ that mocks up
     a CXL topology to augment the nascent support for emulation of CXL
     devices in QEMU.

   - Convert libnvdimm to use the uuid API.

   - Complete the definition of CXL namespace labels in libnvdimm.

   - Tunnel libnvdimm label operations from nd_ioctl() back to the CXL
     mailbox driver. Enable 'ndctl {read,write}-labels' for CXL.

   - Continue to sort and refactor functionality into distinct driver
     and core-infrastructure buckets. For example, mailbox handling is
     now a generic core capability consumed by the PCI and cxl_test
     drivers"

* tag 'cxl-for-5.16' of git://git.kernel.org/pub/scm/linux/kernel/git/cxl/cxl: (34 commits)
  ocxl: Use pci core's DVSEC functionality
  cxl/pci: Use pci core's DVSEC functionality
  PCI: Add pci_find_dvsec_capability to find designated VSEC
  cxl/pci: Split cxl_pci_setup_regs()
  cxl/pci: Add @base to cxl_register_map
  cxl/pci: Make more use of cxl_register_map
  cxl/pci: Remove pci request/release regions
  cxl/pci: Fix NULL vs ERR_PTR confusion
  cxl/pci: Remove dev_dbg for unknown register blocks
  cxl/pci: Convert register block identifiers to an enum
  cxl/acpi: Do not fail cxl_acpi_probe() based on a missing CHBS
  cxl/pci: Disambiguate cxl_pci further from cxl_mem
  Documentation/cxl: Add bus internal docs
  cxl/core: Split decoder setup into alloc + add
  tools/testing/cxl: Introduce a mock memory device + driver
  cxl/mbox: Move command definitions to common location
  cxl/bus: Populate the target list at decoder create
  tools/testing/cxl: Introduce a mocked-up CXL port hierarchy
  cxl/pmem: Add support for multiple nvdimm-bridge objects
  cxl/pmem: Translate NVDIMM label commands to CXL label commands
  ...
 2021-11-08 11:49:48 -08:00
Linus Torvalds dab334c98b Merge branch 'i2c/for-mergewindow' of git://git.kernel.org/pub/scm/linux/kernel/git/wsa/linux 
Pull i2c updates from Wolfram Sang:

 - big refactoring of the PASEMI driver to support the Apple M1

 - huge improvements to the XIIC in terms of locking and SMP safety

 - refactoring and clean ups for the i801 driver

... and the usual bunch of small driver updates

* 'i2c/for-mergewindow' of git://git.kernel.org/pub/scm/linux/kernel/git/wsa/linux: (43 commits)
  i2c: amd-mp2-plat: ACPI: Use ACPI_COMPANION() directly
  i2c: i801: Add support for Intel Ice Lake PCH-N
  i2c: virtio: update the maintainer to Conghui
  i2c: xlr: Fix a resource leak in the error handling path of 'xlr_i2c_probe()'
  i2c: qup: move to use request_irq by IRQF_NO_AUTOEN flag
  i2c: qup: fix a trivial typo
  i2c: tegra: Ensure that device is suspended before driver is removed
  i2c: i801: Fix incorrect and needless software PEC disabling
  i2c: mediatek: Dump i2c/dma register when a timeout occurs
  i2c: mediatek: Reset the handshake signal between i2c and dma
  i2c: mlxcpld: Allow flexible polling time setting for I2C transactions
  i2c: pasemi: Set enable bit for Apple variant
  i2c: pasemi: Add Apple platform driver
  i2c: pasemi: Refactor _probe to use devm_*
  i2c: pasemi: Allow to configure bus frequency
  i2c: pasemi: Move common reset code to own function
  i2c: pasemi: Split pci driver to its own file
  i2c: pasemi: Split off common probing code
  i2c: pasemi: Remove usage of pci_dev
  i2c: pasemi: Use dev_name instead of port number
  ...
 2021-11-08 11:46:10 -08:00
Linus Torvalds 206825f50f Core: 
* Remove obsolete macros only used by the old nand_ecclayout struct
 * Don't remove debugfs directory if device is in use
 * MAINTAINERS:
   - Add entry for Qualcomm NAND controller driver
   - Update the devicetree documentation path of hyperbus
 
 MTD devices:
 * block2mtd:
   - Add support for an optional custom MTD label
   - Minor refactor to avoid hard coded constant
 * mtdswap: Remove redundant assignment of pointer eb
 
 CFI:
 * Fixup CFI on ixp4xx
 
 Raw NAND controller drivers:
 * Arasan:
   - Prevent an unsupported configuration
 * Xway, Socrates: plat_nand, Pasemi, Orion, mpc5121, GPIO, Au1550nd, AMS-Delta:
   - Keep the driver compatible with on-die ECC engines
 * cs553x, lpc32xx_slc, ndfc, sharpsl, tmio, txx9ndfmc:
   - Revert the commits: "Fix external use of SW Hamming ECC helper"
   - And let callers use the bare Hamming helpers
 * Fsmc: Fix use of SM ORDER
 * Intel:
   - Fix potential buffer overflow in probe
 * xway, vf610, txx9ndfm, tegra, stm32, plat_nand, oxnas, omap, mtk, hisi504,
   gpmi, gpio, denali, bcm6368, atmel:
   - Make use of the helper function devm_platform_ioremap_resource{,byname}()
 
 Onenand drivers:
 * Samsung: Drop Exynos4 and describe driver in KConfig
 
 Raw NAND chip drivers:
 * Hynix: Add support for H27UCG8T2ETR-BC MLC NAND
 
 SPI NOR core:
 * Add spi-nor device tree binding under SPI NOR maintainers
 
 SPI NOR manufacturer drivers:
 * Enable locking for n25q128a13
 
 SPI NOR controller drivers:
 * Use devm_platform_ioremap_resource_byname()
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Merge tag 'mtd/for-5.16' of git://git.kernel.org/pub/scm/linux/kernel/git/mtd/linux

Pull mtd updates from Miquel Raynal:
 "Core:
   - Remove obsolete macros only used by the old nand_ecclayout struct
   - Don't remove debugfs directory if device is in use
   - MAINTAINERS:
      - Add entry for Qualcomm NAND controller driver
      - Update the devicetree documentation path of hyperbus

  MTD devices:
   - block2mtd:
      - Add support for an optional custom MTD label
      - Minor refactor to avoid hard coded constant
   - mtdswap: Remove redundant assignment of pointer eb

  CFI:
   - Fixup CFI on ixp4xx

  Raw NAND controller drivers:
   - Arasan:
      - Prevent an unsupported configuration
   - Xway, Socrates: plat_nand, Pasemi, Orion, mpc5121, GPIO, Au1550nd,
     AMS-Delta:
      - Keep the driver compatible with on-die ECC engines
   - cs553x, lpc32xx_slc, ndfc, sharpsl, tmio, txx9ndfmc:
      - Revert the commits: "Fix external use of SW Hamming ECC helper"
      - And let callers use the bare Hamming helpers
   - Fsmc: Fix use of SM ORDER
   - Intel:
      - Fix potential buffer overflow in probe
   - xway, vf610, txx9ndfm, tegra, stm32, plat_nand, oxnas, omap, mtk,
     hisi504, gpmi, gpio, denali, bcm6368, atmel:
      - Make use of the helper function devm_platform_ioremap_resource{,byname}()

  Onenand drivers:
   - Samsung: Drop Exynos4 and describe driver in KConfig

  Raw NAND chip drivers:
   - Hynix: Add support for H27UCG8T2ETR-BC MLC NAND

  SPI NOR core:
   - Add spi-nor device tree binding under SPI NOR maintainers

  SPI NOR manufacturer drivers:
   - Enable locking for n25q128a13

  SPI NOR controller drivers:
   - Use devm_platform_ioremap_resource_byname()"

* tag 'mtd/for-5.16' of git://git.kernel.org/pub/scm/linux/kernel/git/mtd/linux: (50 commits)
  mtd: core: don't remove debugfs directory if device is in use
  MAINTAINERS: Update the devicetree documentation path of hyperbus
  mtd: block2mtd: add support for an optional custom MTD label
  mtd: block2mtd: minor refactor to avoid hard coded constant
  mtd: fixup CFI on ixp4xx
  mtd: rawnand: arasan: Prevent an unsupported configuration
  MAINTAINERS: Add entry for Qualcomm NAND controller driver
  mtd: rawnand: hynix: Add support for H27UCG8T2ETR-BC MLC NAND
  mtd: rawnand: xway: Keep the driver compatible with on-die ECC engines
  mtd: rawnand: socrates: Keep the driver compatible with on-die ECC engines
  mtd: rawnand: plat_nand: Keep the driver compatible with on-die ECC engines
  mtd: rawnand: pasemi: Keep the driver compatible with on-die ECC engines
  mtd: rawnand: orion: Keep the driver compatible with on-die ECC engines
  mtd: rawnand: mpc5121: Keep the driver compatible with on-die ECC engines
  mtd: rawnand: gpio: Keep the driver compatible with on-die ECC engines
  mtd: rawnand: au1550nd: Keep the driver compatible with on-die ECC engines
  mtd: rawnand: ams-delta: Keep the driver compatible with on-die ECC engines
  Revert "mtd: rawnand: cs553x: Fix external use of SW Hamming ECC helper"
  Revert "mtd: rawnand: lpc32xx_slc: Fix external use of SW Hamming ECC helper"
  Revert "mtd: rawnand: ndfc: Fix external use of SW Hamming ECC helper"
  ...
 2021-11-08 11:37:39 -08:00
Linus Torvalds 05b8cd3db7 Add 'tools/perf/libbpf/' to ignored files 
Commit 6b491a86b7 ("perf build: Install libbpf headers locally when
building") installed copies of the libbpf headers into the build tree,
causing unnecessary noise from 'git status' after a perf tools build.

Add the 'libbpf/' subdirectory to the .gitignore file to silence it all
again.

Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
 2021-11-08 11:33:35 -08:00
Linus Torvalds e851dfae43 kgdb patches for 5.16 
A single patch this cycle. We replace some open-coded routines to
 classify task states with the scheduler's own function to do this.
 Alongside the obvious benefits of removing funky code and aligning
 more exactly with the scheduler's task classification, this also
 fixes a long standing compiler warning by removing the open-coded
 routines that generated the warning.
 
 Signed-off-by: Daniel Thompson <daniel.thompson@linaro.org>
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Merge tag 'kgdb-5.16-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/danielt/linux

Pull kgdb update from Daniel Thompson:
 "A single patch this cycle.

  We replace some open-coded routines to classify task states with the
  scheduler's own function to do this. Alongside the obvious benefits of
  removing funky code and aligning more exactly with the scheduler's
  task classification, this also fixes a long standing compiler warning
  by removing the open-coded routines that generated the warning"

* tag 'kgdb-5.16-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/danielt/linux:
  kdb: Adopt scheduler's task classification
 2021-11-08 09:35:43 -08:00
Linus Torvalds a2b03e48e9 OpenRISC updates for 5.16 
This includes 2 minor cleanups, plus a bug fix for OpenRISC TLB flush
 code that allows the the SMP kernel to boot again.
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Merge tag 'for-linus' of git://github.com/openrisc/linux

Pull OpenRISC updates from Stafford Horne:
 "This includes two minor cleanups, plus a bug fix for OpenRISC TLB
  flush code that allows the the SMP kernel to boot again"

* tag 'for-linus' of git://github.com/openrisc/linux:
  openrisc: fix SMP tlb flush NULL pointer dereference
  openrisc: signal: remove unused DEBUG_SIG macro
  openrisc: time: don't mark comment as kernel-doc
 2021-11-08 09:31:25 -08:00
Linus Torvalds bbdbeb0048 perf tools changes for v5.16: 
perf annotate:
 
 - Add riscv64 support.
 
 - Add fusion logic for AMD microarchs.
 
 perf record:
 
 - Add an option to control the synthesizing behavior:
 
     --synth <no|all|task|mmap|cgroup>
                       Fine-tune event synthesis: default=all
 
 core:
 
 - Allow controlling synthesizing PERF_RECORD_ metadata events during record.
 
 - perf.data reader prep work for multithreaded processing.
 
 - Fix missing exclude_{host,guest} setting in PMUs that don't support it and
   that were causing the feature detection code to disable it for all events,
   even the ones in PMUs that support it.
 
 - Fix the default use of precise events on AMD, that were always falling back
   to non-precise because perf_event_attr.exclude_guest=1 was set and IBS does
   not have filtering capability, refusing precise + exclude_guest.
 
 - Add bitfield_swap() to handle branch_stack endian issue.
 
 perf script:
 
 - Show binary offsets for userspace addresses in callchains.
 
 - Support instruction latency via new "ins_lat" selectable field.
 
 - Add dlfilter-show-cycles
 
 perf inject:
 
 - Add vmlinux and ignore-vmlinux arguments, similar to other tools.
 
 perf list:
 
 - Display PMU prefix for partially supported hybrid cache events.
 
 - Display hybrid PMU events with cpu type.
 
 perf stat:
 
 - Improve metrics documentation of data structures.
 
 - Fix memory leaks in the metric code.
 
 - Use NAN for missing event IDs.
 
 - Don't compute unused events.
 
 - Fix memory leak on error path.
 
 - Encode and use metric-id as a metric qualifier.
 
 - Allow metrics with no events.
 
 - Avoid events for an 'if' constant result.
 
 - Only add a referenced metric once.
 
 - Simplify metric_refs calculation.
 
 - Allow modifiers on metrics.
 
 perf test:
 
 - Add workload test of metric and metric groups.
 
 - Workload test of all PMUs.
 
 - vmlinux-kallsyms: Ignore hidden symbols.
 
 - Add pmu-event test for event described as "config=".
 
 - Verify more event members in pmu-events test.
 
 - Add endian test for struct branch_flags on the sample-parsing test.
 
 - Improve temp file cleanup in several tests.
 
 perf daemon:
 
 - Address MSAN warnings on send_cmd().
 
 perf kmem:
 
 - Improve man page for record options
 
 perf srcline:
 
 - Use long-running addr2line per DSO, greatly speeding up the 'srcline' sort order.
 
 perf symbols:
 
 - Ignore $a/$d symbols for ARM modules.
 
 - Fix /proc/kcore access on 32 bit systems.
 
 Kernel UAPI copies:
 
 - Update copy of linux/socket.h with the kernel sources, no change in tooling output.
 
 libbpf:
 
 - Pull in bpf_program__get_prog_info_linear() from libbpf, too much specific to perf.
 
 - Deprecate bpf_map__resize() in favor of bpf_map_set_max_entries()
 
 - Install libbpf headers locally when building.
 
 - Bump minimum LLVM C++ std to GNU++14.
 
 libperf:
 
 - Use binary search in perf_cpu_map__idx() as array are sorted.
 
 libtracefs:
 
 - Enable libtracefs dynamic linking.
 
 libtraceevent:
 
 - Increase logging when verbose.
 
 Arch specific:
 
 PowerPC:
 
 - Add support to expose instruction and data address registers as part of
   extended regs.
 
 Vendor events:
 
 JSON parser:
 
 - Support ConfigCode to set the config= in PMUs like:
 
   $ cat /sys/bus/event_source/devices/hisi_sccl1_ddrc3/events/act_cmd
   config=0x5
 
 - Make the JSON parser more conformant when in strict mode.
 
 All JSON files:
 
 - Fix all remaining invalid JSON files.
 
 ARM:
 
 - Syntax corrections in Neoverse N1 json.
 
 - Categorise the Neoverse V1 counters.
 
 - Add new armv8 PMU events.
 
 - Revise hip08 uncore events.
 
 Hardware tracing:
 
 auxtrace:
 
 - Add missing Z option to ITRACE_HELP.
 
 - Add itrace A option to approximate IPC.
 
 - Add itrace d+o option to direct debug log to stdout.
 
 Intel PT:
 
 - Add support for PERF_RECORD_AUX_OUTPUT_HW_ID
 
 - Support itrace A option to approximate IPC
 
 - Support itrace d+o option to direct debug log to stdout.
 
 Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
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Merge tag 'perf-tools-for-v5.16-2021-11-07-without-bpftool-fix' of git://git.kernel.org/pub/scm/linux/kernel/git/acme/linux

Pull perf tools updates from Arnaldo Carvalho de Melo:
 "perf annotate:
   - Add riscv64 support.
   - Add fusion logic for AMD microarchs.

  perf record:
   - Add an option to control the synthesizing behavior:
       --synth <no|all|task|mmap|cgroup>

  core:
   - Allow controlling synthesizing PERF_RECORD_ metadata events during
     record.
   - perf.data reader prep work for multithreaded processing.
   - Fix missing exclude_{host,guest} setting in PMUs that don't support
     it and that were causing the feature detection code to disable it
     for all events, even the ones in PMUs that support it.
   - Fix the default use of precise events on AMD, that were always
     falling back to non-precise because perf_event_attr.exclude_guest=1
     was set and IBS does not have filtering capability, refusing
     precise + exclude_guest.
   - Add bitfield_swap() to handle branch_stack endian issue.

  perf script:
   - Show binary offsets for userspace addresses in callchains.
   - Support instruction latency via new "ins_lat" selectable field.
   - Add dlfilter-show-cycles

  perf inject:
   - Add vmlinux and ignore-vmlinux arguments, similar to other tools.

  perf list:
   - Display PMU prefix for partially supported hybrid cache events.
   - Display hybrid PMU events with cpu type.

  perf stat:
   - Improve metrics documentation of data structures.
   - Fix memory leaks in the metric code.
   - Use NAN for missing event IDs.
   - Don't compute unused events.
   - Fix memory leak on error path.
   - Encode and use metric-id as a metric qualifier.
   - Allow metrics with no events.
   - Avoid events for an 'if' constant result.
   - Only add a referenced metric once.
   - Simplify metric_refs calculation.
   - Allow modifiers on metrics.

  perf test:
   - Add workload test of metric and metric groups.
   - Workload test of all PMUs.
   - vmlinux-kallsyms: Ignore hidden symbols.
   - Add pmu-event test for event described as "config=".
   - Verify more event members in pmu-events test.
   - Add endian test for struct branch_flags on the sample-parsing test.
   - Improve temp file cleanup in several tests.

  perf daemon:
   - Address MSAN warnings on send_cmd().

  perf kmem:
   - Improve man page for record options

  perf srcline:
   - Use long-running addr2line per DSO, greatly speeding up the
     'srcline' sort order.

  perf symbols:
   - Ignore $a/$d symbols for ARM modules.
   - Fix /proc/kcore access on 32 bit systems.

  Kernel UAPI copies:
   - Update copy of linux/socket.h with the kernel sources, no change in
     tooling output.

  libbpf:
   - Pull in bpf_program__get_prog_info_linear() from libbpf, too much
     specific to perf.
   - Deprecate bpf_map__resize() in favor of bpf_map_set_max_entries()
   - Install libbpf headers locally when building.
   - Bump minimum LLVM C++ std to GNU++14.

  libperf:
   - Use binary search in perf_cpu_map__idx() as array are sorted.

  libtracefs:
   - Enable libtracefs dynamic linking.

  libtraceevent:
   - Increase logging when verbose.

  Arch specific:

   * PowerPC:
      - Add support to expose instruction and data address registers as
        part of extended regs.

  Vendor events:

   * JSON parser:
      - Support ConfigCode to set the config= in PMUs
      - Make the JSON parser more conformant when in strict mode.

   * All JSON files:
      - Fix all remaining invalid JSON files.

   * ARM:
      - Syntax corrections in Neoverse N1 json.
      - Categorise the Neoverse V1 counters.
      - Add new armv8 PMU events.
      - Revise hip08 uncore events.

  Hardware tracing:

   * auxtrace:
      - Add missing Z option to ITRACE_HELP.
      - Add itrace A option to approximate IPC.
      - Add itrace d+o option to direct debug log to stdout.

   * Intel PT:
      - Add support for PERF_RECORD_AUX_OUTPUT_HW_ID
      - Support itrace A option to approximate IPC
      - Support itrace d+o option to direct debug log to stdout"

* tag 'perf-tools-for-v5.16-2021-11-07-without-bpftool-fix' of git://git.kernel.org/pub/scm/linux/kernel/git/acme/linux: (120 commits)
  perf build: Install libbpf headers locally when building
  perf MANIFEST: Add bpftool files to allow building with BUILD_BPF_SKEL=1
  perf metric: Fix memory leaks
  perf parse-event: Add init and exit to parse_event_error
  perf parse-events: Rename parse_events_error functions
  perf stat: Fix memory leak on error path
  perf tools: Use __BYTE_ORDER__
  perf inject: Add vmlinux and ignore-vmlinux arguments
  perf tools: Check vmlinux/kallsyms arguments in all tools
  perf tools: Refactor out kernel symbol argument sanity checking
  perf symbols: Ignore $a/$d symbols for ARM modules
  perf evsel: Don't set exclude_guest by default
  perf evsel: Fix missing exclude_{host,guest} setting
  perf bpf: Add missing free to bpf_event__print_bpf_prog_info()
  perf beauty: Update copy of linux/socket.h with the kernel sources
  perf clang: Fixes for more recent LLVM/clang
  tools: Bump minimum LLVM C++ std to GNU++14
  perf bpf: Pull in bpf_program__get_prog_info_linear()
  Revert "perf bench futex: Add support for 32-bit systems with 64-bit time_t"
  perf test sample-parsing: Add endian test for struct branch_flags
  ...
 2021-11-08 09:25:26 -08:00
Linus Torvalds 1e9ed9360f Kbuild updates for v5.16 
- Remove the global -isystem compiler flag, which was made possible by
    the introduction of <linux/stdarg.h>
 
  - Improve the Kconfig help to print the location in the top menu level
 
  - Fix "FORCE prerequisite is missing" build warning for sparc
 
  - Add new build targets, tarzst-pkg and perf-tarzst-src-pkg, which generate
    a zstd-compressed tarball
 
  - Prevent gen_init_cpio tool from generating a corrupted cpio when
    KBUILD_BUILD_TIMESTAMP is set to 2106-02-07 or later
 
  - Misc cleanups
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Merge tag 'kbuild-v5.16' of git://git.kernel.org/pub/scm/linux/kernel/git/masahiroy/linux-kbuild

Pull Kbuild updates from Masahiro Yamada:

 - Remove the global -isystem compiler flag, which was made possible by
   the introduction of <linux/stdarg.h>

 - Improve the Kconfig help to print the location in the top menu level

 - Fix "FORCE prerequisite is missing" build warning for sparc

 - Add new build targets, tarzst-pkg and perf-tarzst-src-pkg, which
   generate a zstd-compressed tarball

 - Prevent gen_init_cpio tool from generating a corrupted cpio when
   KBUILD_BUILD_TIMESTAMP is set to 2106-02-07 or later

 - Misc cleanups

* tag 'kbuild-v5.16' of git://git.kernel.org/pub/scm/linux/kernel/git/masahiroy/linux-kbuild: (28 commits)
  kbuild: use more subdir- for visiting subdirectories while cleaning
  sh: remove meaningless archclean line
  initramfs: Check timestamp to prevent broken cpio archive
  kbuild: split DEBUG_CFLAGS out to scripts/Makefile.debug
  gen_init_cpio: add static const qualifiers
  kbuild: Add make tarzst-pkg build option
  scripts: update the comments of kallsyms support
  sparc: Add missing "FORCE" target when using if_changed
  kconfig: refactor conf_touch_dep()
  kconfig: refactor conf_write_dep()
  kconfig: refactor conf_write_autoconf()
  kconfig: add conf_get_autoheader_name()
  kconfig: move sym_escape_string_value() to confdata.c
  kconfig: refactor listnewconfig code
  kconfig: refactor conf_write_symbol()
  kconfig: refactor conf_write_heading()
  kconfig: remove 'const' from the return type of sym_escape_string_value()
  kconfig: rename a variable in the lexer to a clearer name
  kconfig: narrow the scope of variables in the lexer
  kconfig: Create links to main menu items in search
  ...
 2021-11-08 09:15:45 -08:00
Linus Torvalds 67b7e1f241 modules patches for 5.16-rc1 
As requested by Jessica I'm stepping in to help with modules
 maintenance. This is my first pull request to you.
 
 I've collected only two patches for modules for the 5.16-rc1 merge
 window. These patches are from Shuah Khan as she debugged some corner
 case error with modules. The error messages are improved for
 elf_validity_check(). While doing this work a corner case fix was
 spotted on validate_section_offset() due to a possible overflow bug
 on 64-bit. The impact of this fix is low given this just limits
 module section headers placed within the 32-bit boundary, and we
 obviously don't have insane module sizes. Even if a specially crafted
 module is constructed later checks would invalidate the module right
 away.
 
 I've let this sit through 0-day testing since October 15th with no
 issues found.
 
 Signed-off-by: Luis Chamberlain <mcgrof@kernel.org>
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Merge tag 'modules-5.16-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/mcgrof/linux

Pull module updates from Luis Chamberlain:
 "As requested by Jessica I'm stepping in to help with modules
  maintenance. This is my first pull request to you.

  I've collected only two patches for modules for the 5.16-rc1 merge
  window. These patches are from Shuah Khan as she debugged some corner
  case error with modules. The error messages are improved for
  elf_validity_check(). While doing this work a corner case fix was
  spotted on validate_section_offset() due to a possible overflow bug on
  64-bit. The impact of this fix is low given this just limits module
  section headers placed within the 32-bit boundary, and we obviously
  don't have insane module sizes. Even if a specially crafted module is
  constructed later checks would invalidate the module right away.

  I've let this sit through 0-day testing since October 15th with no
  issues found"

* tag 'modules-5.16-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/mcgrof/linux:
  module: change to print useful messages from elf_validity_check()
  module: fix validate_section_offset() overflow bug on 64-bit
 2021-11-08 09:04:59 -08:00
Arnd Bergmann f91140e455 soc: ti: fix wkup_m3_rproc_boot_thread return type 
The wkup_m3_rproc_boot_thread() function uses a nonstandard prototype,
which broke after Eric's recent cleanup:

drivers/soc/ti/wkup_m3_ipc.c: In function 'wkup_m3_rproc_boot_thread':
drivers/soc/ti/wkup_m3_ipc.c:429:16: error: 'return' with a value, in function returning void [-Werror=return-type]
  429 |         return 0;
      |                ^
drivers/soc/ti/wkup_m3_ipc.c:416:13: note: declared here
  416 | static void wkup_m3_rproc_boot_thread(struct wkup_m3_ipc *m3_ipc)
      |             ^~~~~~~~~~~~~~~~~~~~~~~~~

Change it to the normal prototype as it should have been from the
start.

Fixes: 111e70490d ("exit/kthread: Have kernel threads return instead of calling do_exit")
Fixes: cdd5de500b ("soc: ti: Add wkup_m3_ipc driver")
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Link: https://lkml.kernel.org/r/20211105075119.2327190-1-arnd@kernel.org
Acked-by: Santosh Shilimkar <ssantosh@kernel.org>
Acked-by: Tony Lindgren <tony@atomide.com>
Signed-off-by: Eric W. Biederman <ebiederm@xmission.com>
 2021-11-08 11:01:51 -06:00
Arnd Bergmann 501586ea59 xen/balloon: fix unused-variable warning 
In configurations with CONFIG_XEN_BALLOON_MEMORY_HOTPLUG=n
and CONFIG_XEN_BALLOON_MEMORY_HOTPLUG=y, gcc warns about an
unused variable:

drivers/xen/balloon.c:83:12: error: 'xen_hotplug_unpopulated' defined but not used [-Werror=unused-variable]

Since this is always zero when CONFIG_XEN_BALLOON_MEMORY_HOTPLUG
is disabled, turn it into a preprocessor constant in that case.

Fixes: 121f2faca2 ("xen/balloon: rename alloc/free_xenballooned_pages")
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Link: https://lore.kernel.org/r/20211108111408.3940366-1-arnd@kernel.org
Reviewed-by: Juergen Gross <jgross@suse.com>
Signed-off-by: Boris Ostrovsky <boris.ostrovsky@oracle.com>
 2021-11-08 10:40:17 -06:00
Pavel Begunkov bad119b9a0 io_uring: honour zeroes as io-wq worker limits 
When we pass in zero as an io-wq worker number limit it shouldn't
actually change the limits but return the old value, follow that
behaviour with deferred limits setup as well.

Cc: stable@kernel.org # 5.15
Reported-by: Beld Zhang <beldzhang@gmail.com>
Fixes: e139a1ec92 ("io_uring: apply max_workers limit to all future users")
Signed-off-by: Pavel Begunkov <asml.silence@gmail.com>
Link: https://lore.kernel.org/r/1b222a92f7a78a24b042763805e891a4cdd4b544.1636384034.git.asml.silence@gmail.com
Signed-off-by: Jens Axboe <axboe@kernel.dk>
 2021-11-08 08:39:48 -07:00
Ye Bin a846a8e6c9 blk-mq: don't free tags if the tag_set is used by other device in queue initialztion 
We got UAF report on v5.10 as follows:
[ 1446.674930] ==================================================================
[ 1446.675970] BUG: KASAN: use-after-free in blk_mq_get_driver_tag+0x9a4/0xa90
[ 1446.676902] Read of size 8 at addr ffff8880185afd10 by task kworker/1:2/12348
[ 1446.677851]
[ 1446.678073] CPU: 1 PID: 12348 Comm: kworker/1:2 Not tainted 5.10.0-10177-gc9c81b1e346a #2
[ 1446.679168] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.14.0-0-g155821a1990b-prebuilt.qemu.org 04/01/2014
[ 1446.680692] Workqueue: kthrotld blk_throtl_dispatch_work_fn
[ 1446.681448] Call Trace:
[ 1446.681800]  dump_stack+0x9b/0xce
[ 1446.682916]  print_address_description.constprop.6+0x3e/0x60
[ 1446.685999]  kasan_report.cold.9+0x22/0x3a
[ 1446.687186]  blk_mq_get_driver_tag+0x9a4/0xa90
[ 1446.687785]  blk_mq_dispatch_rq_list+0x21a/0x1d40
[ 1446.692576]  __blk_mq_do_dispatch_sched+0x394/0x830
[ 1446.695758]  __blk_mq_sched_dispatch_requests+0x398/0x4f0
[ 1446.698279]  blk_mq_sched_dispatch_requests+0xdf/0x140
[ 1446.698967]  __blk_mq_run_hw_queue+0xc0/0x270
[ 1446.699561]  __blk_mq_delay_run_hw_queue+0x4cc/0x550
[ 1446.701407]  blk_mq_run_hw_queue+0x13b/0x2b0
[ 1446.702593]  blk_mq_sched_insert_requests+0x1de/0x390
[ 1446.703309]  blk_mq_flush_plug_list+0x4b4/0x760
[ 1446.705408]  blk_flush_plug_list+0x2c5/0x480
[ 1446.708471]  blk_finish_plug+0x55/0xa0
[ 1446.708980]  blk_throtl_dispatch_work_fn+0x23b/0x2e0
[ 1446.711236]  process_one_work+0x6d4/0xfe0
[ 1446.711778]  worker_thread+0x91/0xc80
[ 1446.713400]  kthread+0x32d/0x3f0
[ 1446.714362]  ret_from_fork+0x1f/0x30
[ 1446.714846]
[ 1446.715062] Allocated by task 1:
[ 1446.715509]  kasan_save_stack+0x19/0x40
[ 1446.716026]  __kasan_kmalloc.constprop.1+0xc1/0xd0
[ 1446.716673]  blk_mq_init_tags+0x6d/0x330
[ 1446.717207]  blk_mq_alloc_rq_map+0x50/0x1c0
[ 1446.717769]  __blk_mq_alloc_map_and_request+0xe5/0x320
[ 1446.718459]  blk_mq_alloc_tag_set+0x679/0xdc0
[ 1446.719050]  scsi_add_host_with_dma.cold.3+0xa0/0x5db
[ 1446.719736]  virtscsi_probe+0x7bf/0xbd0
[ 1446.720265]  virtio_dev_probe+0x402/0x6c0
[ 1446.720808]  really_probe+0x276/0xde0
[ 1446.721320]  driver_probe_device+0x267/0x3d0
[ 1446.721892]  device_driver_attach+0xfe/0x140
[ 1446.722491]  __driver_attach+0x13a/0x2c0
[ 1446.723037]  bus_for_each_dev+0x146/0x1c0
[ 1446.723603]  bus_add_driver+0x3fc/0x680
[ 1446.724145]  driver_register+0x1c0/0x400
[ 1446.724693]  init+0xa2/0xe8
[ 1446.725091]  do_one_initcall+0x9e/0x310
[ 1446.725626]  kernel_init_freeable+0xc56/0xcb9
[ 1446.726231]  kernel_init+0x11/0x198
[ 1446.726714]  ret_from_fork+0x1f/0x30
[ 1446.727212]
[ 1446.727433] Freed by task 26992:
[ 1446.727882]  kasan_save_stack+0x19/0x40
[ 1446.728420]  kasan_set_track+0x1c/0x30
[ 1446.728943]  kasan_set_free_info+0x1b/0x30
[ 1446.729517]  __kasan_slab_free+0x111/0x160
[ 1446.730084]  kfree+0xb8/0x520
[ 1446.730507]  blk_mq_free_map_and_requests+0x10b/0x1b0
[ 1446.731206]  blk_mq_realloc_hw_ctxs+0x8cb/0x15b0
[ 1446.731844]  blk_mq_init_allocated_queue+0x374/0x1380
[ 1446.732540]  blk_mq_init_queue_data+0x7f/0xd0
[ 1446.733155]  scsi_mq_alloc_queue+0x45/0x170
[ 1446.733730]  scsi_alloc_sdev+0x73c/0xb20
[ 1446.734281]  scsi_probe_and_add_lun+0x9a6/0x2d90
[ 1446.734916]  __scsi_scan_target+0x208/0xc50
[ 1446.735500]  scsi_scan_channel.part.3+0x113/0x170
[ 1446.736149]  scsi_scan_host_selected+0x25a/0x360
[ 1446.736783]  store_scan+0x290/0x2d0
[ 1446.737275]  dev_attr_store+0x55/0x80
[ 1446.737782]  sysfs_kf_write+0x132/0x190
[ 1446.738313]  kernfs_fop_write_iter+0x319/0x4b0
[ 1446.738921]  new_sync_write+0x40e/0x5c0
[ 1446.739429]  vfs_write+0x519/0x720
[ 1446.739877]  ksys_write+0xf8/0x1f0
[ 1446.740332]  do_syscall_64+0x2d/0x40
[ 1446.740802]  entry_SYSCALL_64_after_hwframe+0x44/0xa9
[ 1446.741462]
[ 1446.741670] The buggy address belongs to the object at ffff8880185afd00
[ 1446.741670]  which belongs to the cache kmalloc-256 of size 256
[ 1446.743276] The buggy address is located 16 bytes inside of
[ 1446.743276]  256-byte region [ffff8880185afd00, ffff8880185afe00)
[ 1446.744765] The buggy address belongs to the page:
[ 1446.745416] page:ffffea0000616b00 refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x185ac
[ 1446.746694] head:ffffea0000616b00 order:2 compound_mapcount:0 compound_pincount:0
[ 1446.747719] flags: 0x1fffff80010200(slab|head)
[ 1446.748337] raw: 001fffff80010200 ffffea00006a3208 ffffea000061bf08 ffff88801004f240
[ 1446.749404] raw: 0000000000000000 0000000000100010 00000001ffffffff 0000000000000000
[ 1446.750455] page dumped because: kasan: bad access detected
[ 1446.751227]
[ 1446.751445] Memory state around the buggy address:
[ 1446.752102]  ffff8880185afc00: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
[ 1446.753090]  ffff8880185afc80: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
[ 1446.754079] >ffff8880185afd00: fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
[ 1446.755065]                          ^
[ 1446.755589]  ffff8880185afd80: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
[ 1446.756574]  ffff8880185afe00: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
[ 1446.757566] ==================================================================

Flag 'BLK_MQ_F_TAG_QUEUE_SHARED' will be set if the second device on the
same host initializes it's queue successfully. However, if the second
device failed to allocate memory in blk_mq_alloc_and_init_hctx() from
blk_mq_realloc_hw_ctxs() from blk_mq_init_allocated_queue(),
__blk_mq_free_map_and_rqs() will be called on error path, and if
'BLK_MQ_TAG_HCTX_SHARED' is not set, 'tag_set->tags' will be freed
while it's still used by the first device.

To fix this issue we move release newly allocated hardware context from
blk_mq_realloc_hw_ctxs to __blk_mq_update_nr_hw_queues. As there is needn't to
release hardware context in blk_mq_init_allocated_queue.

Fixes: 868f2f0b72 ("blk-mq: dynamic h/w context count")
Signed-off-by: Ye Bin <yebin10@huawei.com>
Signed-off-by: Yu Kuai <yukuai3@huawei.com>
Reviewed-by: Ming Lei <ming.lei@redhat.com>
Link: https://lore.kernel.org/r/20211108074019.1058843-1-yebin10@huawei.com
Signed-off-by: Jens Axboe <axboe@kernel.dk>
 2021-11-08 06:23:49 -07:00
Coly Li 2878feaed5 bcache: Revert "bcache: use bvec_virt" 
This reverts commit 2fd3e5efe7.

The above commit replaces page_address(bv->bv_page) by bvec_virt(bv) to
avoid directly access to bv->bv_page, but in situation bv->bv_offset is
not zero and page_address(bv->bv_page) is not equal to bvec_virt(bv). In
such case a memory corruption may happen because memory in next page is
tainted by following line in do_btree_node_write(),
	memcpy(bvec_virt(bv), addr, PAGE_SIZE);

This patch reverts the mentioned commit to avoid the memory corruption.

Fixes: 2fd3e5efe7 ("bcache: use bvec_virt")
Signed-off-by: Coly Li <colyli@suse.de>
Cc: Christoph Hellwig <hch@lst.de>
Cc: stable@vger.kernel.org # 5.15
Signed-off-by: Christoph Hellwig <hch@lst.de>
Link: https://lore.kernel.org/r/20211103151041.70516-1-colyli@suse.de
Signed-off-by: Jens Axboe <axboe@kernel.dk>
 2021-11-08 06:23:17 -07:00
Arnd Bergmann c7c386fbc2 arm64: pgtable: make __pte_to_phys/__phys_to_pte_val inline functions 
gcc warns about undefined behavior the vmalloc code when building
with CONFIG_ARM64_PA_BITS_52, when the 'idx++' in the argument to
__phys_to_pte_val() is evaluated twice:

mm/vmalloc.c: In function 'vmap_pfn_apply':
mm/vmalloc.c:2800:58: error: operation on 'data->idx' may be undefined [-Werror=sequence-point]
 2800 |         *pte = pte_mkspecial(pfn_pte(data->pfns[data->idx++], data->prot));
      |                                                 ~~~~~~~~~^~
arch/arm64/include/asm/pgtable-types.h:25:37: note: in definition of macro '__pte'
   25 | #define __pte(x)        ((pte_t) { (x) } )
      |                                     ^
arch/arm64/include/asm/pgtable.h:80:15: note: in expansion of macro '__phys_to_pte_val'
   80 |         __pte(__phys_to_pte_val((phys_addr_t)(pfn) << PAGE_SHIFT) | pgprot_val(prot))
      |               ^~~~~~~~~~~~~~~~~
mm/vmalloc.c:2800:30: note: in expansion of macro 'pfn_pte'
 2800 |         *pte = pte_mkspecial(pfn_pte(data->pfns[data->idx++], data->prot));
      |                              ^~~~~~~

I have no idea why this never showed up earlier, but the safest
workaround appears to be changing those macros into inline functions
so the arguments get evaluated only once.

Cc: Matthew Wilcox <willy@infradead.org>
Fixes: 75387b9263 ("arm64: handle 52-bit physical addresses in page table entries")
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Link: https://lore.kernel.org/r/20211105075414.2553155-1-arnd@kernel.org
Signed-off-by: Will Deacon <will@kernel.org>
 2021-11-08 10:05:54 +00:00
Qian Cai c6975d7cab arm64: Track no early_pgtable_alloc() for kmemleak 
After switched page size from 64KB to 4KB on several arm64 servers here,
kmemleak starts to run out of early memory pool due to a huge number of
those early_pgtable_alloc() calls:

  kmemleak_alloc_phys()
  memblock_alloc_range_nid()
  memblock_phys_alloc_range()
  early_pgtable_alloc()
  init_pmd()
  alloc_init_pud()
  __create_pgd_mapping()
  __map_memblock()
  paging_init()
  setup_arch()
  start_kernel()

Increased the default value of DEBUG_KMEMLEAK_MEM_POOL_SIZE by 4 times
won't be enough for a server with 200GB+ memory. There isn't much
interesting to check memory leaks for those early page tables and those
early memory mappings should not reference to other memory. Hence, no
kmemleak false positives, and we can safely skip tracking those early
allocations from kmemleak like we did in the commit fed84c7852
("mm/memblock.c: skip kmemleak for kasan_init()") without needing to
introduce complications to automatically scale the value depends on the
runtime memory size etc. After the patch, the default value of
DEBUG_KMEMLEAK_MEM_POOL_SIZE becomes sufficient again.

Signed-off-by: Qian Cai <quic_qiancai@quicinc.com>
Reviewed-by: Catalin Marinas <catalin.marinas@arm.com>
Reviewed-by: Mike Rapoport <rppt@linux.ibm.com>
Link: https://lore.kernel.org/r/20211105150509.7826-1-quic_qiancai@quicinc.com
Signed-off-by: Will Deacon <will@kernel.org>
 2021-11-08 10:05:22 +00:00
Peter Collingbourne aedad3e1c6 arm64: mte: change PR_MTE_TCF_NONE back into an unsigned long 
This constant was previously an unsigned long, but was changed
into an int in commit 433c38f40f ("arm64: mte: change ASYNC and
SYNC TCF settings into bitfields"). This ended up causing spurious
unsigned-signed comparison warnings in expressions such as:

(x & PR_MTE_TCF_MASK) != PR_MTE_TCF_NONE

Therefore, change it back into an unsigned long to silence these
warnings.

Link: https://linux-review.googlesource.com/id/I07a72310db30227a5b7d789d0b817d78b657c639
Signed-off-by: Peter Collingbourne <pcc@google.com>
Link: https://lore.kernel.org/r/20211105230829.2254790-1-pcc@google.com
Signed-off-by: Will Deacon <will@kernel.org>
 2021-11-08 10:04:33 +00:00
Masahiro Yamada 34688c7691 arm64: vdso: remove -nostdlib compiler flag 
The -nostdlib option requests the compiler to not use the standard
system startup files or libraries when linking. It is effective only
when $(CC) is used as a linker driver.

Since commit 691efbedc6 ("arm64: vdso: use $(LD) instead of $(CC)
to link VDSO"), $(LD) is directly used, hence -nostdlib is unneeded.

Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
Link: https://lore.kernel.org/r/20211107161802.323125-1-masahiroy@kernel.org
Signed-off-by: Will Deacon <will@kernel.org>
 2021-11-08 10:02:57 +00:00
Reiji Watanabe 9dc232a8ab arm64: arm64_ftr_reg->name may not be a human-readable string 
The id argument of ARM64_FTR_REG_OVERRIDE() is used for two purposes:
one as the system register encoding (used for the sys_id field of
__ftr_reg_entry), and the other as the register name (stringified
and used for the name field of arm64_ftr_reg), which is debug
information. The id argument is supposed to be a macro that
indicates an encoding of the register (eg. SYS_ID_AA64PFR0_EL1, etc).

ARM64_FTR_REG(), which also has the same id argument,
uses ARM64_FTR_REG_OVERRIDE() and passes the id to the macro.
Since the id argument is completely macro-expanded before it is
substituted into a macro body of ARM64_FTR_REG_OVERRIDE(),
the stringified id in the body of ARM64_FTR_REG_OVERRIDE is not
a human-readable register name, but a string of numeric bitwise
operations.

Fix this so that human-readable register names are available as
debug information.

Fixes: 8f266a5d87 ("arm64: cpufeature: Add global feature override facility")
Signed-off-by: Reiji Watanabe <reijiw@google.com>
Reviewed-by: Oliver Upton <oupton@google.com>
Acked-by: Marc Zyngier <maz@kernel.org>
Link: https://lore.kernel.org/r/20211101045421.2215822-1-reijiw@google.com
Signed-off-by: Will Deacon <will@kernel.org>
 2021-11-08 10:02:36 +00:00
Christophe JAILLET c45231a766 litex_liteeth: Fix a double free in the remove function 
'netdev' is a managed resource allocated in the probe using
'devm_alloc_etherdev()'.
It must not be freed explicitly in the remove function.

Fixes: ee7da21ac4 ("net: Add driver for LiteX's LiteETH network interface")
Signed-off-by: Christophe JAILLET <christophe.jaillet@wanadoo.fr>
Signed-off-by: David S. Miller <davem@davemloft.net>
 2021-11-07 21:51:17 +00:00
Chengfeng Ye 9fec40f850 nfc: pn533: Fix double free when pn533_fill_fragment_skbs() fails 
skb is already freed by dev_kfree_skb in pn533_fill_fragment_skbs,
but follow error handler branch when pn533_fill_fragment_skbs()
fails, skb is freed again, results in double free issue. Fix this
by not free skb in error path of pn533_fill_fragment_skbs.

Fixes: 963a82e07d ("NFC: pn533: Split large Tx frames in chunks")
Fixes: 93ad42020c ("NFC: pn533: Target mode Tx fragmentation support")
Signed-off-by: Chengfeng Ye <cyeaa@connect.ust.hk>
Reviewed-by: Dan Carpenter <dan.carpenter@oracle.com>
Reviewed-by: Krzysztof Kozlowski <krzysztof.kozlowski@canonical.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
 2021-11-07 19:37:04 +00:00
Anders Roxell 62b12ab5df selftests: net: tls: remove unused variable and code 
When building selftests/net with clang, the compiler warn about the
function abs() see below:

tls.c:657:15: warning: variable 'len_compared' set but not used [-Wunused-but-set-variable]
        unsigned int len_compared = 0;
                     ^

Rework to remove the unused variable and the for-loop where the variable
'len_compared' was assinged.

Fixes: 7f657d5bf5 ("selftests: tls: add selftests for TLS sockets")
Signed-off-by: Anders Roxell <anders.roxell@linaro.org>
Reviewed-by: Nick Desaulniers <ndesaulniers@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
 2021-11-07 19:35:08 +00:00
Volodymyr Mytnyk e1464db5c5 net: marvell: prestera: fix hw structure laid out 
The prestera FW v4.0 support commit has been merged
accidentally w/o review comments addressed and waiting
for the final patch set to be uploaded. So, fix the remaining
comments related to structure laid out and build issues.

Reported-by: kernel test robot <lkp@intel.com>
Fixes: bb5dbf2cc6 ("net: marvell: prestera: add firmware v4.0 support")
Signed-off-by: Volodymyr Mytnyk <vmytnyk@marvell.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
 2021-11-07 19:33:55 +00:00
Alexey Khoroshilov e7ea51cd87 sctp: remove unreachable code from sctp_sf_violation_chunk() 
sctp_sf_violation_chunk() is not called with asoc argument equal to NULL,
but if that happens it would lead to NULL pointer dereference
in sctp_vtag_verify().

The patch removes code that handles NULL asoc in sctp_sf_violation_chunk().

Found by Linux Verification Center (linuxtesting.org) with SVACE.

Signed-off-by: Alexey Khoroshilov <khoroshilov@ispras.ru>
Proposed-by: Xin Long <lucien.xin@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
 2021-11-07 19:32:39 +00:00
Eric Dumazet 8ac9dfd58b llc: fix out-of-bound array index in llc_sk_dev_hash() 
Both ifindex and LLC_SK_DEV_HASH_ENTRIES are signed.

This means that (ifindex % LLC_SK_DEV_HASH_ENTRIES) is negative
if @ifindex is negative.

We could simply make LLC_SK_DEV_HASH_ENTRIES unsigned.

In this patch I chose to use hash_32() to get more entropy
from @ifindex, like llc_sk_laddr_hashfn().

UBSAN: array-index-out-of-bounds in ./include/net/llc.h:75:26
index -43 is out of range for type 'hlist_head [64]'
CPU: 1 PID: 20999 Comm: syz-executor.3 Not tainted 5.15.0-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Call Trace:
 <TASK>
 __dump_stack lib/dump_stack.c:88 [inline]
 dump_stack_lvl+0xcd/0x134 lib/dump_stack.c:106
 ubsan_epilogue+0xb/0x5a lib/ubsan.c:151
 __ubsan_handle_out_of_bounds.cold+0x62/0x6c lib/ubsan.c:291
 llc_sk_dev_hash include/net/llc.h:75 [inline]
 llc_sap_add_socket+0x49c/0x520 net/llc/llc_conn.c:697
 llc_ui_bind+0x680/0xd70 net/llc/af_llc.c:404
 __sys_bind+0x1e9/0x250 net/socket.c:1693
 __do_sys_bind net/socket.c:1704 [inline]
 __se_sys_bind net/socket.c:1702 [inline]
 __x64_sys_bind+0x6f/0xb0 net/socket.c:1702
 do_syscall_x64 arch/x86/entry/common.c:50 [inline]
 do_syscall_64+0x35/0xb0 arch/x86/entry/common.c:80
 entry_SYSCALL_64_after_hwframe+0x44/0xae
RIP: 0033:0x7fa503407ae9

Fixes: 6d2e3ea284 ("llc: use a device based hash table to speed up multicast delivery")
Signed-off-by: Eric Dumazet <edumazet@google.com>
Reported-by: syzbot <syzkaller@googlegroups.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
 2021-11-07 19:25:29 +00:00
Linus Torvalds c107fb9b4f Add gitignore file for samples/fanotify/ subdirectory 
Commit 5451093081 ("samples: Add fs error monitoring example") added a
new sample program, but didn't teach git to ignore the new generated
files, causing unnecessary noise from 'git status' after a full build.

Add the 'fs-monitor' sample executable to the .gitignore for this
subdirectory to silence it all again.

Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
 2021-11-07 11:19:24 -08:00
Randy Dunlap 85879f131d net: hisilicon: fix hsn3_ethtool kernel-doc warnings 
Fix kernel-doc warnings and spacing in hns3_ethtool.c:

hns3_ethtool.c:246: warning: No description found for return value of 'hns3_lp_run_test'
hns3_ethtool.c:408: warning: expecting prototype for hns3_nic_self_test(). Prototype was for hns3_self_test() instead

Signed-off-by: Randy Dunlap <rdunlap@infradead.org>
Reported-by: kernel test robot <lkp@intel.com>
Cc: Peng Li <lipeng321@huawei.com>
Cc: Guangbin Huang <huangguangbin2@huawei.com>
Cc: Yisen Zhuang <yisen.zhuang@huawei.com>
Cc: Salil Mehta <salil.mehta@huawei.com>
Cc: "David S. Miller" <davem@davemloft.net>
Cc: Jakub Kicinski <kuba@kernel.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
 2021-11-07 19:17:36 +00:00
Krzysztof Kozlowski 08fcdfa6e3 nfc: port100: lower verbosity of cancelled URB messages 
It is not an error to receive an URB with -ENOENT because it can come
from regular user operations, e.g. pressing CTRL+C when running nfctool
from neard.  Make it a debugging message, not an error.

Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@canonical.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
 2021-11-07 19:12:13 +00:00
David S. Miller f05fb508ec linux-can-fixes-for-5.16-20211106 
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Merge tag 'linux-can-fixes-for-5.16-20211106' of git://git.kernel.org/pub/scm/linux/kernel/git/mkl/linux-can

linux-can-fixes-for-5.16-20211106

Marc Kleine-Budde says:

====================
pull-request: can 2021-11-06

this is a pull request of 8 patches for net/master.

The first 3 patches are by Zhang Changzhong and fix 3 standard
conformance problems in the j1939 CAN stack.

The next patch is by Vincent Mailhol and fixes a memory leak in the
leak error path of the etas_es58x CAN driver.

Stephane Grosjean contributes 2 patches for the peak_usb driver to fix
the bus error handling and update the order of printed information
regarding firmware version and available updates.

The last 2 patches are by me and fixes a packet starvation problem in
the bus off case and the error handling in the mcp251xfd_chip_start()
function.
====================

Signed-off-by: David S. Miller <davem@davemloft.net>
 2021-11-07 19:05:52 +00:00
Linus Torvalds 6b75d88fa8 Merge branch 'i2c/for-current' of git://git.kernel.org/pub/scm/linux/kernel/git/wsa/linux 
Pull i2c fix from Wolfram Sang:
 "Hot-fix for I2C"

* 'i2c/for-current' of git://git.kernel.org/pub/scm/linux/kernel/git/wsa/linux:
  i2c: xgene-slimpro: Fix wrong pointer passed to PTR_ERR()
 2021-11-07 10:52:04 -08:00
Linus Torvalds e582e08ec0 Auxdisplay improvements: 
- 4-digit 7-segment and quad alphanumeric display support for
     the ht16k33 driver, allowing the user to display and scroll
     text messages, from Geert Uytterhoeven.
 
   - An assortment of fixes and cleanups from Geert Uytterhoeven.
 
   - Header cleanups from Mianhan Liu.
 
   - Whitespace cleanup from Huiquan Deng.
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Merge tag 'auxdisplay-for-linus-v5.16' of git://github.com/ojeda/linux

Pull auxdisplay updates from Miguel Ojeda:

 - 4-digit 7-segment and quad alphanumeric display support for the
   ht16k33 driver, allowing the user to display and scroll text
   messages, from Geert Uytterhoeven.

 - An assortment of fixes and cleanups from Geert Uytterhoeven.

 - Header cleanups from Mianhan Liu.

 - Whitespace cleanup from Huiquan Deng.

* tag 'auxdisplay-for-linus-v5.16' of git://github.com/ojeda/linux: (26 commits)
  MAINTAINERS: Add DT Bindings for Auxiliary Display Drivers
  auxdisplay: cfag12864bfb: code indent should use tabs where possible
  auxdisplay: ht16k33: remove superfluous header files
  auxdisplay: ks0108: remove superfluous header files
  auxdisplay: cfag12864bfb: remove superfluous header files
  auxdisplay: ht16k33: Make use of device properties
  auxdisplay: ht16k33: Add LED support
  dt-bindings: auxdisplay: ht16k33: Document LED subnode
  auxdisplay: ht16k33: Add support for segment displays
  auxdisplay: ht16k33: Extract frame buffer probing
  auxdisplay: ht16k33: Extract ht16k33_brightness_set()
  auxdisplay: ht16k33: Move delayed work
  auxdisplay: ht16k33: Add helper variable dev
  auxdisplay: ht16k33: Convert to simple i2c probe function
  auxdisplay: ht16k33: Remove unneeded error check in keypad probe()
  auxdisplay: ht16k33: Use HT16K33_FB_SIZE in ht16k33_initialize()
  auxdisplay: ht16k33: Fix frame buffer device blanking
  auxdisplay: ht16k33: Connect backlight to fbdev
  auxdisplay: linedisp: Add support for changing scroll rate
  auxdisplay: linedisp: Use kmemdup_nul() helper
  ...
 2021-11-07 10:47:27 -08:00
Quentin Monnet 6b491a86b7 perf build: Install libbpf headers locally when building 
API headers from libbpf should not be accessed directly from the
library's source directory. Instead, they should be exported with "make
install_headers". Let's adjust perf's Makefile to install those headers
locally when building libbpf.

v2:

- Fix $(LIBBPF_OUTPUT) when $(OUTPUT) is null.
- Make sure the recipe for $(LIBBPF_OUTPUT) is not under a "ifdef".

Signed-off-by: Quentin Monnet <quentin@isovalent.com>
Cc: Alexei Starovoitov <ast@kernel.org>
Cc: Andrii Nakryiko <andrii@kernel.org>
Cc: Daniel Borkmann <daniel@iogearbox.net>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Song Liu <songliubraving@fb.com>
Cc: bpf@vger.kernel.org
Cc: netdev@vger.kernel.org
Link: http://lore.kernel.org/lkml/20211107002445.4790-1-quentin@isovalent.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
 2021-11-07 15:39:28 -03:00
Arnaldo Carvalho de Melo f174940488 perf MANIFEST: Add bpftool files to allow building with BUILD_BPF_SKEL=1 
We need bpftool and required kernel/bpf/disasm.[ch] to bootstrap the
cgroups, bperf and other BPF skels used by perf.

Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
 2021-11-07 15:39:28 -03:00
Ian Rogers aba8c5e380 perf metric: Fix memory leaks 
Certain error paths may leak memory as caught by address sanitizer.
Ensure this is cleaned up to make sure address/leak sanitizer is happy.

Fixes: 5ecd5a0c7d ("perf metrics: Modify setup and deduplication")
Signed-off-by: Ian Rogers <irogers@google.com>
Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Cc: Jiri Olsa <jolsa@redhat.com>
Cc: John Garry <john.garry@huawei.com>
Cc: Mark Rutland <mark.rutland@arm.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Stephane Eranian <eranian@google.com>
Link: http://lore.kernel.org/lkml/20211107090002.3784612-3-irogers@google.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
 2021-11-07 15:39:28 -03:00
Ian Rogers 07eafd4e05 perf parse-event: Add init and exit to parse_event_error 
parse_events() may succeed but leave string memory allocations reachable
in the error.

Add an init/exit that must be called to initialize and clean up the
error. This fixes a leak in metricgroup parse_ids.

Signed-off-by: Ian Rogers <irogers@google.com>
Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Cc: Jiri Olsa <jolsa@redhat.com>
Cc: John Garry <john.garry@huawei.com>
Cc: Mark Rutland <mark.rutland@arm.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Stephane Eranian <eranian@google.com>
Link: http://lore.kernel.org/lkml/20211107090002.3784612-2-irogers@google.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
 2021-11-07 15:39:25 -03:00
Ian Rogers 6c1912898e perf parse-events: Rename parse_events_error functions 
Group error functions and name after the data type they manipulate.

Signed-off-by: Ian Rogers <irogers@google.com>
Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Cc: Jiri Olsa <jolsa@redhat.com>
Cc: John Garry <john.garry@huawei.com>
Cc: Mark Rutland <mark.rutland@arm.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Stephane Eranian <eranian@google.com>
Link: http://lore.kernel.org/lkml/20211107090002.3784612-1-irogers@google.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
 2021-11-07 15:38:54 -03:00
Linus Torvalds e54ffb96e6 An improvement for __compiletime_assert and a trivial cleanup 
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Merge tag 'compiler-attributes-for-linus-v5.16' of git://github.com/ojeda/linux

Pull compiler attributes update from Miguel Ojeda:
 "An improvement for `__compiletime_assert` and a trivial cleanup"

* tag 'compiler-attributes-for-linus-v5.16' of git://github.com/ojeda/linux:
  compiler_types: mark __compiletime_assert failure as __noreturn
  Compiler Attributes: remove GCC 5.1 mention
 2021-11-07 10:38:17 -08:00
Miquel Raynal e269d7caf9 SPI NOR core changes: 
- Add spi-nor device tree binding under SPI NOR maintainers
 
 SPI NOR manufacturer drivers changes:
 - Enable locking for n25q128a13
 
 SPI NOR controller drivers changes:
 - Use devm_platform_ioremap_resource_byname()
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Merge tag 'spi-nor/for-5.16' into mtd/next

SPI NOR core changes:
- Add spi-nor device tree binding under SPI NOR maintainers

SPI NOR manufacturer drivers changes:
- Enable locking for n25q128a13

SPI NOR controller drivers changes:
- Use devm_platform_ioremap_resource_byname()
 2021-11-07 17:38:36 +01:00
Miquel Raynal bca20e6a73 Core: 
* Remove obsolete macros only used by the old nand_ecclayout struct
 * MAINTAINERS: Add entry for Qualcomm NAND controller driver
 
 Raw NAND controller drivers:
 * Arasan:
   - Prevent an unsupported configuration
 * Xway, Socrates: plat_nand, Pasemi, Orion, mpc5121, GPIO, Au1550nd, AMS-Delta:
   - Keep the driver compatible with on-die ECC engines
 * cs553x, lpc32xx_slc, ndfc, sharpsl, tmio, txx9ndfmc:
   - Revert the commits: "Fix external use of SW Hamming ECC helper"
   - And let callers use the bare Hamming helpers
 * Fsmc: Fix use of SM ORDER
 * Intel:
   - Fix potential buffer overflow in probe
 * xway, vf610, txx9ndfm, tegra, stm32, plat_nand, oxnas, omap, mtk, hisi504,
   gpmi, gpio, denali, bcm6368, atmel:
   - Make use of the helper function devm_platform_ioremap_resource{,byname}()
 
 Onenand driver:
 * Samsung: Drop Exynos4 and describe driver in KConfig
 
 Raw NAND chip drivers:
 * Hynix: Add support for H27UCG8T2ETR-BC MLC NAND
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Merge tag 'nand/for-5.16' into mtd/next

Core:
* Remove obsolete macros only used by the old nand_ecclayout struct
* MAINTAINERS: Add entry for Qualcomm NAND controller driver

Raw NAND controller drivers:
* Arasan:
  - Prevent an unsupported configuration
* Xway, Socrates: plat_nand, Pasemi, Orion, mpc5121, GPIO, Au1550nd, AMS-Delta:
  - Keep the driver compatible with on-die ECC engines
* cs553x, lpc32xx_slc, ndfc, sharpsl, tmio, txx9ndfmc:
  - Revert the commits: "Fix external use of SW Hamming ECC helper"
  - And let callers use the bare Hamming helpers
* Fsmc: Fix use of SM ORDER
* Intel:
  - Fix potential buffer overflow in probe
* xway, vf610, txx9ndfm, tegra, stm32, plat_nand, oxnas, omap, mtk, hisi504,
  gpmi, gpio, denali, bcm6368, atmel:
  - Make use of the helper function devm_platform_ioremap_resource{,byname}()

Onenand driver:
* Samsung: Drop Exynos4 and describe driver in KConfig

Raw NAND chip drivers:
* Hynix: Add support for H27UCG8T2ETR-BC MLC NAND
 2021-11-07 17:38:05 +01:00