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Pavel Begunkov 2905cd48c1 io_uring: mem-account pbuf buckets
commit cc18cc5e82 upstream.

Potentially, someone may create as many pbuf bucket as there are indexes
in an xarray without any other restrictions bounding our memory usage,
put memory needed for the buckets under memory accounting.

Cc: <stable@vger.kernel.org>
Signed-off-by: Pavel Begunkov <asml.silence@gmail.com>
Link: https://lore.kernel.org/r/d34c452e45793e978d26e2606211ec9070d329ea.1659622312.git.asml.silence@gmail.com
Signed-off-by: Jens Axboe <axboe@kernel.dk>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2022-08-17 15:16:21 +02:00
arch powerpc/kexec: Fix build failure from uninitialised variable 2022-08-17 15:16:21 +02:00
block block: don't allow the same type rq_qos add more than once 2022-08-17 15:16:10 +02:00
certs certs: make system keyring depend on x509 parser 2022-07-24 12:53:55 -07:00
crypto KEYS: asymmetric: enforce SM2 signature use pkey algo 2022-08-17 15:16:17 +02:00
Documentation xen-blkfront: Apply 'feature_persistent' parameter when connect 2022-08-17 15:16:18 +02:00
drivers net: dsa: felix: fix min gate len calculation for tc when its first gate is closed 2022-08-17 15:16:20 +02:00
fs ext4: fix race when reusing xattr blocks 2022-08-17 15:16:17 +02:00
include tracing: Use a copy of the va_list for __assign_vstr() 2022-08-17 15:16:20 +02:00
init stack: Declare {randomize_,}kstack_offset to fix Sparse warnings 2022-08-17 15:14:14 +02:00
io_uring io_uring: mem-account pbuf buckets 2022-08-17 15:16:21 +02:00
ipc ipc: Free mq_sysctls if ipc namespace creation failed 2022-06-22 17:47:41 -05:00
kernel locking/csd_lock: Change csdlock_debug from early_param to __setup 2022-08-17 15:16:09 +02:00
lib crypto: lib/blake2s - reduce stack frame usage in self test 2022-08-17 15:16:19 +02:00
LICENSES LICENSES/LGPL-2.1: Add LGPL-2.1-or-later as valid identifiers 2021-12-16 14:33:10 +01:00
mm hugetlb_cgroup: fix wrong hugetlb cgroup numa stat 2022-08-17 15:16:15 +02:00
net wifi: cfg80211: remove chandef check in cfg80211_cac_event() 2022-08-17 15:16:20 +02:00
samples sample: bpf: xdp_router_ipv4: Allow the kernel to send arp requests 2022-08-17 15:14:25 +02:00
scripts scripts/faddr2line: Fix vmlinux detection on arm64 2022-08-17 15:16:01 +02:00
security selinux: Add boundary check in put_entry() 2022-08-17 15:14:06 +02:00
sound Revert "devcoredump: remove the useless gfp_t parameter in dev_coredumpv and dev_coredumpm" 2022-08-17 15:16:19 +02:00
tools tools/thermal: Fix possible path truncations 2022-08-17 15:16:02 +02:00
usr Not a lot of material this cycle. Many singleton patches against various 2022-05-27 11:22:03 -07:00
virt KVM: Don't set Accessed/Dirty bits for ZERO_PAGE 2022-08-17 15:15:21 +02:00
.clang-format clang-format: Fix space after for_each macros 2022-05-20 19:27:16 +02:00
.cocciconfig
.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 kbuild: split the second line of *.mod into *.usyms 2022-05-08 03:16:59 +09:00
.mailmap ARM: SoC fixes for 5.19, part 4 2022-07-27 09:43:07 -07:00
COPYING COPYING: state that all contributions really are covered by this file 2020-02-10 13:32:20 -08:00
CREDITS MAINTAINERS: mark ARM/PALM TREO SUPPORT orphan 2022-07-07 15:17:00 +02:00
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 io_uring: move to separate directory 2022-08-17 15:14:20 +02:00
Makefile io_uring: move to separate directory 2022-08-17 15:14:20 +02:00
README Drop all 00-INDEX files from Documentation/ 2018-09-09 15:08:58 -06:00

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.