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Filename Latest commit message Latest commit date
Mauro Carvalho Chehab 9d91046f6b media: uvc: don't do DMA on stack 
commit 1a10d7fdb6d0e235e9d230916244cc2769d3f170 upstream.

As warned by smatch:
	drivers/media/usb/uvc/uvc_v4l2.c:911 uvc_ioctl_g_input() error: doing dma on the stack (&i)
	drivers/media/usb/uvc/uvc_v4l2.c:943 uvc_ioctl_s_input() error: doing dma on the stack (&i)

those two functions call uvc_query_ctrl passing a pointer to
a data at the DMA stack. those are used to send URBs via
usb_control_msg(). Using DMA stack is not supported and should
not work anymore on modern Linux versions.

So, use a kmalloc'ed buffer.

Cc: stable@vger.kernel.org	# Kernel 4.9 and upper
Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2021-09-22 12:26:21 +02:00
arch arm64: head: avoid over-mapping in map_memory 2021-09-22 12:26:20 +02:00
block block: bfq: fix bfq_set_next_ioprio_data() 2021-09-22 12:26:21 +02:00
certs certs: Trigger creation of RSA module signing key if it's not an RSA key 2021-09-15 09:47:29 +02:00
crypto crypto: shash - avoid comparing pointers to exported functions under CFI 2021-07-14 16:53:13 +02:00
Documentation KVM: X86: MMU: Use the correct inherited permissions to get shadow page 2021-08-15 13:08:04 +02:00
drivers media: uvc: don't do DMA on stack 2021-09-22 12:26:21 +02:00
fs btrfs: reset replace target device to allocation state on close 2021-09-22 12:26:19 +02:00
include crypto: public_key: fix overflow during implicit conversion 2021-09-22 12:26:21 +02:00
init kbuild: add CONFIG_LD_IS_LLD 2021-06-30 08:47:44 -04:00
ipc
kernel Revert "posix-cpu-timers: Force next expiration recalc after itimer reset" 2021-09-16 12:56:13 +02:00
lib lib/mpi: use kcalloc in mpi_resize 2021-09-15 09:47:29 +02:00
LICENSES
mm mm/page_alloc: speed up the iteration of max_order 2021-09-12 08:56:41 +02:00
net 9p/xen: Fix end of loop tests for list_for_each_entry 2021-09-22 12:26:20 +02:00
samples samples/bpf: Fix the error return code of xdp_redirect's main() 2021-07-14 16:53:30 +02:00
scripts scripts/tracing: fix the bug that can't parse raw_trace_func 2021-08-12 13:21:00 +02:00
security IMA: remove the dependency on CRYPTO_MD5 2021-09-15 09:47:41 +02:00
sound ASoC: wcd9335: Disable irq on slave ports in the remove function 2021-09-15 09:47:37 +02:00
tools tools/thermal/tmon: Add cross compiling support 2021-09-22 12:26:20 +02:00
usr
virt KVM: Do not leak memory for duplicate debugfs directories 2021-08-12 13:21:03 +02:00
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Makefile Linux 5.4.147 2021-09-16 12:56:14 +02:00
README

README 

Linux kernel
============

There are several guides for kernel developers and users. These guides can
be rendered in a number of formats, like HTML and PDF. Please read
Documentation/admin-guide/README.rst first.

In order to build the documentation, use ``make htmldocs`` or
``make pdfdocs``.  The formatted documentation can also be read online at:

    https://www.kernel.org/doc/html/latest/

There are various text files in the Documentation/ subdirectory,
several of them using the Restructured Text markup notation.

Please read the Documentation/process/changes.rst file, as it contains the
requirements for building and running the kernel, and information about
the problems which may result by upgrading your kernel.