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Pavel Begunkov 72783d2af8 io_uring/rsrc: disallow multi-source reg buffers 
commit edd4782696 upstream.

If two or more mappings go back to back to each other they can be passed
into io_uring to be registered as a single registered buffer. That would
even work if mappings came from different sources, e.g. it's possible to
mix in this way anon pages and pages from shmem or hugetlb. That is not
a problem but it'd rather be less prone if we forbid such mixing.

Cc: <stable@vger.kernel.org>
Signed-off-by: Pavel Begunkov <asml.silence@gmail.com>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2023-03-11 16:40:01 +01:00
arch x86/speculation: Allow enabling STIBP with legacy IBRS 2023-03-11 16:39:59 +01:00
block blk-iocost: fix divide by 0 error in calc_lcoefs() 2023-03-11 16:39:48 +01:00
certs certs/blacklist_hashes.c: fix const confusion in certs blacklist 2022-06-22 14:13:17 +02:00
crypto crypto: rsa-pkcs1pad - Use akcipher_request_complete 2023-03-11 16:39:27 +01:00
Documentation Documentation/hw-vuln: Document the interaction between IBRS and STIBP 2023-03-11 16:39:59 +01:00
drivers brd: return 0/-error from brd_insert_page() 2023-03-11 16:39:59 +01:00
fs udf: Fix file corruption when appending just after end of preallocated extent 2023-03-11 16:39:57 +01:00
include ima: Align ima_file_mmap() parameters with mmap_file LSM hook 2023-03-11 16:40:00 +01:00
init init/Kconfig: fix CC_HAS_ASM_GOTO_TIED_OUTPUT test with dash 2022-12-02 17:40:03 +01:00
io_uring io_uring/rsrc: disallow multi-source reg buffers 2023-03-11 16:40:01 +01:00
ipc ipc/sem: Fix dangling sem_array access in semtimedop race 2022-12-08 11:24:00 +01:00
kernel irqdomain: Drop bogus fwspec-mapping error handling 2023-03-11 16:40:00 +01:00
lib printf: fix errname.c list 2023-03-11 16:39:40 +01:00
LICENSES LICENSES/deprecated: add Zlib license text 2020-09-16 14:33:49 +02:00
mm Revert "mm: Always release pages to the buddy allocator in memblock_free_late()." 2023-02-22 12:55:56 +01:00
net inet: fix fast path in __inet_hash_connect() 2023-03-11 16:39:50 +01:00
samples samples: vfio-mdev: Fix missing pci_disable_device() in mdpy_fb_probe() 2023-01-14 10:16:01 +01:00
scripts builddeb: clean generated package content 2023-03-11 16:39:46 +01:00
security ima: Align ima_file_mmap() parameters with mmap_file LSM hook 2023-03-11 16:40:00 +01:00
sound ASoC: kirkwood: Iterate over array indexes instead of using pointer math 2023-03-11 16:39:53 +01:00
tools objtool: add UACCESS exceptions for __tsan_volatile_read/write 2023-03-11 16:39:41 +01:00
usr usr/include/Makefile: add linux/nfc.h to the compile-test coverage 2022-02-01 17:25:48 +01:00
virt KVM: Destroy target device if coalesced MMIO unregistration fails 2023-03-11 16:39:58 +01:00
.clang-format RDMA 5.10 pull request 2020-10-17 11:18:18 -07:00
.cocciconfig
.get_maintainer.ignore
.gitattributes .gitattributes: use 'dts' diff driver for dts files 2019-12-04 19:44:11 -08:00
.gitignore kbuild: generate Module.symvers only when vmlinux exists 2021-05-19 10:12:59 +02:00
.mailmap mailmap: add two more addresses of Uwe Kleine-König 2020-12-06 10:19:07 -08:00
COPYING COPYING: state that all contributions really are covered by this file 2020-02-10 13:32:20 -08:00
CREDITS MAINTAINERS: Move Jason Cooper to CREDITS 2020-11-30 10:20:34 +01:00
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 audit: update the mailing list in MAINTAINERS 2023-02-25 11:55:04 +01:00
Makefile Linux 5.10.172 2023-03-03 15:13:15 +01:00
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.