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Ryan Roberts 28bba2c293 fsnotify: pass correct offset to fsnotify_mmap_perm()
fsnotify_mmap_perm() requires a byte offset for the file about to be
mmap'ed.  But it is called from vm_mmap_pgoff(), which has a page offset. 
Previously the conversion was done incorrectly so let's fix it, being
careful not to overflow on 32-bit platforms.

Discovered during code review.

Link: https://lkml.kernel.org/r/20251003155238.2147410-1-ryan.roberts@arm.com
Fixes: 066e053fe2 ("fsnotify: add pre-content hooks on mmap()")
Signed-off-by: Ryan Roberts <ryan.roberts@arm.com>
Reviewed-by: Kiryl Shutsemau <kas@kernel.org>
Cc: Amir Goldstein <amir73il@gmail.com>
Cc: David Hildenbrand <david@redhat.com>
Cc: Liam Howlett <liam.howlett@oracle.com>
Cc: Lorenzo Stoakes <lorenzo.stoakes@oracle.com>
Cc: Michal Hocko <mhocko@suse.com>
Cc: Mike Rapoport <rppt@kernel.org>
Cc: Suren Baghdasaryan <surenb@google.com>
Cc: Vlastimil Babka <vbabka@suse.cz>
Cc: <stable@vger.kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
2025-10-07 14:01:12 -07:00
arch - switch longson32 platform to DT and use MIPS_GENERIC framework 2025-10-05 10:09:55 -07:00
block Summary of significant series in this pull request: 2025-10-02 18:18:33 -07:00
certs sign-file,extract-cert: use pkcs11 provider for OPENSSL MAJOR >= 3 2024-09-20 19:52:48 +03:00
crypto This update includes the following changes: 2025-10-04 14:59:29 -07:00
Documentation Only two patch series in this pull request: 2025-10-05 12:11:07 -07:00
drivers Only two patch series in this pull request: 2025-10-05 12:11:07 -07:00
fs It has been a relatively busy cycle in docsland, with changes all over: 2025-10-03 17:16:13 -07:00
include mm/ksm: fix flag-dropping behavior in ksm_madvise 2025-10-07 14:01:12 -07:00
init printk changes for 6.18 2025-10-04 11:13:11 -07:00
io_uring Summary of significant series in this pull request: 2025-10-02 18:18:33 -07:00
ipc namespace-6.18-rc1 2025-09-29 11:20:29 -07:00
kernel tracing updates for v6.18: 2025-10-05 09:43:36 -07:00
lib integrity-v6.18 2025-10-05 10:48:33 -07:00
LICENSES LICENSES: Replace the obsolete address of the FSF in the GFDL-1.2 2025-07-24 11:15:39 +02:00
mm fsnotify: pass correct offset to fsnotify_mmap_perm() 2025-10-07 14:01:12 -07:00
net NFS Client Updates for Linux 6.18 2025-10-03 14:20:40 -07:00
rust mm/ksm: fix flag-dropping behavior in ksm_madvise 2025-10-07 14:01:12 -07:00
samples Char/Misc/IIO/Binder changes for 6.18-rc1 2025-10-04 16:26:32 -07:00
scripts It has been a relatively busy cycle in docsland, with changes all over: 2025-10-03 17:16:13 -07:00
security integrity-v6.18 2025-10-05 10:48:33 -07:00
sound platform-drivers-x86 for v6.18-1 2025-10-04 15:28:18 -07:00
tools rtla: Updates for v6.18 2025-10-05 09:38:26 -07:00
usr gen_init_cpio: add -a <data_align> as reflink optimization 2025-08-20 16:02:56 -07:00
virt KVM common changes for 6.18 2025-09-30 13:27:59 -04:00
.clang-format memblock: drop for_each_free_mem_pfn_range_in_zone_from() 2025-09-14 08:49:03 +03:00
.clippy.toml rust: clean Rust 1.88.0's warning about clippy::disallowed_macros configuration 2025-05-07 00:11:47 +02:00
.cocciconfig
.editorconfig .editorconfig: remove trim_trailing_whitespace option 2024-06-13 16:47:52 +02:00
.get_maintainer.ignore MAINTAINERS: remove Alyssa Rosenzweig 2025-09-18 21:17:31 +02:00
.gitattributes .gitattributes: set diff driver for Rust source code files 2023-05-31 17:48:25 +02:00
.gitignore .gitignore: ignore compile_commands.json globally 2025-08-12 15:53:55 -07:00
.mailmap VFIO updates for v6.18-rc1 2025-10-04 08:24:54 -07:00
.pylintrc tools: docs: parse-headers.py: move it from sphinx dir 2025-08-29 15:54:42 -06:00
.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 USB/Thunderbolt changes for 6.18-rc1 2025-10-04 16:07:08 -07:00
Kbuild sched: Make migrate_{en,dis}able() inline 2025-09-25 09:57:16 +02:00
Kconfig io_uring: Rename KConfig to Kconfig 2025-02-19 14:53:27 -07:00
MAINTAINERS - switch longson32 platform to DT and use MIPS_GENERIC framework 2025-10-05 10:09:55 -07:00
Makefile It has been a relatively busy cycle in docsland, with changes all over: 2025-10-03 17:16:13 -07:00
README README: Fix spelling 2024-03-18 03:36:32 -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 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.