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Amir Goldstein 8fa0285dbf ovl: fix incorrect fdput() on aio completion 
commit 724768a393 upstream.

ovl_{read,write}_iter() always call fdput(real) to put one or zero
refcounts of the real file, but for aio, whether it was submitted or not,
ovl_aio_put() also calls fdput(), which is not balanced.  This is only a
problem in the less common case when FDPUT_FPUT flag is set.

To fix the problem use get_file() to take file refcount and use fput()
instead of fdput() in ovl_aio_put().

Fixes: 2406a307ac ("ovl: implement async IO routines")
Cc: <stable@vger.kernel.org> # v5.6
Reviewed-by: Miklos Szeredi <miklos@szeredi.hu>
Signed-off-by: Amir Goldstein <amir73il@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2023-09-23 11:14:34 +02:00
arch x86/purgatory: Remove LTO flags 2023-09-23 11:14:33 +02:00
block blk-mq: fix tags UAF when shrinking q->nr_hw_queues 2023-09-23 11:14:33 +02:00
certs KEYS: Add missing function documentation 2023-04-24 16:15:52 +03:00
crypto crypto: lrw,xts - Replace strlcpy with strscpy 2023-09-23 11:14:19 +02:00
Documentation perf/smmuv3: Enable HiSilicon Erratum 162001900 quirk for HIP08/09 2023-09-23 11:14:18 +02:00
drivers md/raid1: fix error: ISO C90 forbids mixed declarations 2023-09-23 11:14:33 +02:00
fs ovl: fix incorrect fdput() on aio completion 2023-09-23 11:14:34 +02:00
include x86/ibt: Suppress spurious ENDBR 2023-09-23 11:14:32 +02:00
init sched/psi: Select KERNFS as needed 2023-09-13 09:52:59 +02:00
io_uring io_uring: annotate the struct io_kiocb slab for appropriate user copy 2023-09-23 11:14:25 +02:00
ipc Merge branch 'work.namespace' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs 2023-02-24 19:20:07 -08:00
kernel panic: Reenable preemption in WARN slowpath 2023-09-23 11:14:33 +02:00
lib kobject: Add sanity check for kset->kobj.ktype in kset_register() 2023-09-23 11:14:29 +02:00
LICENSES LICENSES: Add the copyleft-next-0.3.1 license 2022-11-08 15:44:01 +01:00
mm vm: fix move_vma() memory accounting being off 2023-09-19 12:30:30 +02:00
net Revert "SUNRPC: Fail faster on bad verifier" 2023-09-23 11:14:33 +02:00
rust rust: macros: vtable: fix HAS_* redefinition (gen_const_name) 2023-08-09 21:15:07 +02:00
samples samples/hw_breakpoint: fix building without module unloading 2023-09-23 11:14:33 +02:00
scripts linux/export: fix reference to exported functions for parisc64 2023-09-19 12:30:21 +02:00
security smackfs: Prevent underflow in smk_set_cipso() 2023-09-13 09:53:22 +02:00
sound ASoC: SOF: amd: clear panic mask status when panic occurs 2023-09-23 11:14:26 +02:00
tools selftests: tracing: Fix to unmount tracefs for recovering environment 2023-09-23 11:14:32 +02:00
usr initramfs: Encode dependency on KBUILD_BUILD_TIMESTAMP 2023-06-06 17:54:49 +09:00
virt kvm/vfio: ensure kvg instance stays around in kvm_vfio_group_add() 2023-09-13 09:53:29 +02:00
.clang-format iommu: Add for_each_group_device() 2023-05-23 08:15:51 +02:00
.cocciconfig
.get_maintainer.ignore get_maintainer: add Alan to .get_maintainer.ignore 2022-08-20 15:17:44 -07:00
.gitattributes .gitattributes: set diff driver for Rust source code files 2023-05-31 17:48:25 +02:00
.gitignore Revert ".gitignore: ignore *.cover and *.mbx" 2023-07-04 15:05:12 -07:00
.mailmap mailmap: add entries for Simon Horman 2023-08-16 09:53:10 +01:00
.rustfmt.toml rust: add .rustfmt.toml 2022-09-28 09:02:20 +02:00
COPYING COPYING: state that all contributions really are covered by this file 2020-02-10 13:32:20 -08:00
CREDITS - Address -Wmissing-prototype warnings 2023-06-26 16:43:54 -07:00
Kbuild Kbuild updates for v6.1 2022-10-10 12:00:45 -07:00
Kconfig kbuild: ensure full rebuild when the compiler is updated 2020-05-12 13:28:33 +09:00
MAINTAINERS sound fixes for 6.5 2023-08-25 08:48:14 -07:00
Makefile Linux 6.5.4 2023-09-19 12:30:30 +02:00
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.