mirror of
https://gitlab.com/redhat/centos-stream/src/kernel/centos-stream-10.git
synced 2026-09-09 00:07:04 +08:00
Rafael Aquini
f70d7e4675
JIRA: https://redhat.atlassian.net/browse/RHEL-145695 commit 9ee5d1766c8bfa4924bd47e31c4dd193493f5a45 Author: Shameer Kolothum <skolothumtho@nvidia.com> Date: Tue Nov 25 17:13:50 2025 +0000 mm/hugetlb: fix incorrect error return from hugetlb_reserve_pages() The function hugetlb_reserve_pages() returns the number of pages added to the reservation map on success and a negative error code on failure (e.g. -EINVAL, -ENOMEM). However, in some error paths, it may return -1 directly. For example, a failure at: if (hugetlb_acct_memory(h, gbl_reserve) < 0) goto out_put_pages; results in returning -1 (since add = -1), which may be misinterpreted in userspace as -EPERM. Fix this by explicitly capturing and propagating the return values from helper functions, and using -EINVAL for all other failure cases. Link: https://lkml.kernel.org/r/20251125171350.86441-1-skolothumtho@nvidia.com Fixes: 986f5f2b4be3 ("mm/hugetlb: make hugetlb_reserve_pages() return nr of entries updated") Signed-off-by: Shameer Kolothum <skolothumtho@nvidia.com> Reviewed-by: Joshua Hahn <joshua.hahnjy@gmail.com> Reviewed-by: Jason Gunthorpe <jgg@nvidia.com> Acked-by: Oscar Salvador <osalvador@suse.de> Cc: Matthew R. Ochs <mochs@nvidia.com> Cc: Muchun Song <muchun.song@linux.dev> Cc: Nicolin Chen <nicolinc@nvidia.com> Cc: Vivek Kasireddy <vivek.kasireddy@intel.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Rafael Aquini <raquini@redhat.com>
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.