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Takashi Iwai 47047ae0b7 ALSA: PCM: Fix NULL dereference at mmap checks

commit 8e537d5dec upstream.

The recent refactoring of mmap handling caused Oops on some devices
that don't use the standard memory allocations.  This patch addresses
it by allowing snd_dma_buffer_mmap() helper to receive the NULL
pointer dmab argument (and return an error appropriately).

Fixes: a202bd1ad8 ("ALSA: core: Move mmap handler into memalloc ops")
Cc: <stable@vger.kernel.org>
Link: https://lore.kernel.org/r/20211107163911.13534-1-tiwai@suse.de
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

2021-11-18 19:15:55 +01:00

arch

parisc: Fix ptrace check on syscall return

2021-11-18 19:15:53 +01:00

block

Merge tag 'block-5.15-2021-10-29' of git://git.kernel.dk/linux-block

2021-10-29 11:10:29 -07:00

certs

certs: Add support for using elliptic curve keys for signing modules

2021-08-23 19:55:42 +03:00

crypto

Merge branch 'linus' of git://git.kernel.org/pub/scm/linux/kernel/git/herbert/crypto-2.6

2021-08-30 12:57:10 -07:00

Documentation

kfence: default to dynamic branch instead of static keys mode

2021-11-12 15:05:49 +01:00

drivers

media: v4l2-ioctl: Fix check_ext_ctrls

2021-11-18 19:15:53 +01:00

io-wq: remove worker to owner tw dependency

2021-11-18 19:15:52 +01:00

include

scsi: core: Avoid leaving shost->last_reset with stale value if EH does not run

2021-11-18 19:15:51 +01:00

init

bootconfig: init: Fix memblock leak in xbc_make_cmdline()

2021-10-10 22:27:40 -04:00

ipc

ipc: remove memcg accounting for sops objects in do_semtimedop()

2021-09-14 10:22:11 -07:00

kernel

Merge tag 'trace-v5.15-rc6-3' of git://git.kernel.org/pub/scm/linux/kernel/git/rostedt/linux-trace

2021-10-29 10:41:07 -07:00

lib

kfence: default to dynamic branch instead of static keys mode

2021-11-12 15:05:49 +01:00

LICENSES

LICENSES/dual/CC-BY-4.0: Git rid of "smart quotes"

2021-07-15 06:31:24 -06:00

kfence: always use static branches to guard kfence_alloc()

2021-11-12 15:05:49 +01:00

net

mptcp: fix corrupt receiver key in MPC + data + checksum

2021-10-28 08:19:06 -07:00

samples

samples/bpf: Relicense bpf_insn.h as GPL-2.0-only OR BSD-2-Clause

2021-09-29 16:03:55 +02:00

scripts

Merge tag 'trace-v5.15-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/rostedt/linux-trace

2021-10-16 10:51:41 -07:00

security

binder: use cred instead of task for selinux checks

2021-11-12 15:05:48 +01:00

sound

ALSA: PCM: Fix NULL dereference at mmap checks

2021-11-18 19:15:55 +01:00

tools

perf script: Fix PERF_SAMPLE_WEIGHT_STRUCT support

2021-10-31 12:51:41 -03:00

usr

.gitignore: prefix local generated files with a slash

2021-05-02 00:43:35 +09:00

virt

KVM: Remove tlbs_dirty

2021-09-23 11:01:12 -04:00

.clang-format

clang-format: Update with the latest for_each macro list

2021-05-12 23:32:39 +02:00

.cocciconfig

scripts: add Linux .cocciconfig for coccinelle

2016-07-22 12:13:39 +02:00

.get_maintainer.ignore

Opt out of scripts/get_maintainer.pl

2019-05-16 10:53:40 -07:00

.gitattributes

.gitattributes: use 'dts' diff driver for dts files

2019-12-04 19:44:11 -08:00

.gitignore

.gitignore: ignore only top-level modules.builtin

2021-05-02 00:43:35 +09:00

.mailmap

mailmap: add Andrej Shadura

2021-10-18 20:22:03 -10:00

COPYING

COPYING: state that all contributions really are covered by this file

2020-02-10 13:32:20 -08:00

CREDITS

MAINTAINERS: Move Daniel Drake to credits

2021-09-21 08:34:58 +03:00

Kbuild

kbuild: rename hostprogs-y/always to hostprogs/always-y

2020-02-04 01:53:07 +09:00

Kconfig

kbuild: ensure full rebuild when the compiler is updated

2020-05-12 13:28:33 +09:00

MAINTAINERS

Merge tag 'drm-fixes-2021-10-29' of git://anongit.freedesktop.org/drm/drm

2021-10-28 12:17:01 -07:00

Makefile

Linux 5.15.2

2021-11-12 15:05:52 +01:00

README

Drop all 00-INDEX files from Documentation/

2018-09-09 15:08:58 -06:00

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.