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9b3e150464
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Christian Brauner 9b3e150464
pidfs: handle kernels without namespaces cleanly 
The nsproxy structure contains nearly all of the namespaces associated
with a task. When a given namespace type is not supported by this kernel
the rules whether the corresponding pointer in struct nsproxy is NULL or
always init_<ns_type>_ns differ per namespace. Ideally, that wouldn't be
the case and for all namespace types we'd always set it to
init_<ns_type>_ns when the corresponding namespace type isn't supported.

Make sure we handle all namespaces where the pointer in struct nsproxy
can be NULL when the namespace type isn't supported.

Link: https://lore.kernel.org/r/20240722-work-pidfs-e6a83030f63e@brauner
Fixes: 5b08bd4085 ("pidfs: allow retrieval of namespace file descriptors") # mainline only
Signed-off-by: Christian Brauner <brauner@kernel.org>
2024-07-24 10:53:13 +02:00
arch - In the series "treewide: Refactor heap related implementation", 2024-07-21 17:56:22 -07:00
block SCSI misc on 20240718 2024-07-19 10:56:58 -07:00
certs kbuild: use $(src) instead of $(srctree)/$(src) for source directory 2024-05-10 04:34:52 +09:00
crypto crypto: testmgr - generate power-of-2 lengths more often 2024-07-13 11:50:28 +12:00
Documentation - 875fa64577 ("mm/hugetlb_vmemmap: fix race with speculative PFN 2024-07-21 17:15:46 -07:00
drivers - In the series "treewide: Refactor heap related implementation", 2024-07-21 17:56:22 -07:00
fs pidfs: handle kernels without namespaces cleanly 2024-07-24 10:53:13 +02:00
include - In the series "treewide: Refactor heap related implementation", 2024-07-21 17:56:22 -07:00
init - 875fa64577 ("mm/hugetlb_vmemmap: fix race with speculative PFN 2024-07-21 17:15:46 -07:00
io_uring Networking changes for 6.11. Not much excitement - a handful of large 2024-07-16 19:28:34 -07:00
ipc slab updates for 6.11 2024-07-18 15:08:12 -07:00
kernel - In the series "treewide: Refactor heap related implementation", 2024-07-21 17:56:22 -07:00
lib - In the series "treewide: Refactor heap related implementation", 2024-07-21 17:56:22 -07:00
LICENSES LICENSES: Add the copyleft-next-0.3.1 license 2022-11-08 15:44:01 +01:00
mm - 875fa64577 ("mm/hugetlb_vmemmap: fix race with speculative PFN 2024-07-21 17:15:46 -07:00
net - In the series "treewide: Refactor heap related implementation", 2024-07-21 17:56:22 -07:00
rust slab updates for 6.11 2024-07-18 15:08:12 -07:00
samples - In the series "treewide: Refactor heap related implementation", 2024-07-21 17:56:22 -07:00
scripts - In the series "treewide: Refactor heap related implementation", 2024-07-21 17:56:22 -07:00
security Landlock updates for v6.11-rc1 2024-07-20 11:41:52 -07:00
sound Char/Misc and other driver changes for 6.11-rc1 2024-07-19 15:55:08 -07:00
tools - In the series "treewide: Refactor heap related implementation", 2024-07-21 17:56:22 -07:00
usr kbuild: use $(src) instead of $(srctree)/$(src) for source directory 2024-05-10 04:34:52 +09:00
virt KVM generic changes for 6.11 2024-07-16 09:51:36 -04:00
.clang-format Docs: Move clang-format from process/ to dev-tools/ 2024-06-26 16:36:00 -06:00
.cocciconfig
.editorconfig .editorconfig: remove trim_trailing_whitespace option 2024-06-13 16:47:52 +02:00
.get_maintainer.ignore Add Jeff Kirsher to .get_maintainer.ignore 2024-03-08 11:36:54 +00:00
.gitattributes .gitattributes: set diff driver for Rust source code files 2023-05-31 17:48:25 +02:00
.gitignore kbuild: create a list of all built DTB files 2024-02-19 18:20:39 +09:00
.mailmap soc: dt updates for 6.11 2024-07-16 11:43:51 -07:00
.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 tracing: Update of MAINTAINERS and CREDITS file 2024-07-18 14:08:42 -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 - In the series "treewide: Refactor heap related implementation", 2024-07-21 17:56:22 -07:00
Makefile asm-generic updates for 6.11 2024-07-16 12:09:03 -07:00
README README: Fix spelling 2024-03-18 03:36:32 -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 reStructuredText 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.