mirror of
https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
synced 2026-05-05 07:30:06 -04:00
1717449b44
Commit434ed3350f("memfd: improve userspace warnings for missing exec-related flags") attempted to make these warnings more useful (so they would work as an incentive to get users to switch to specifying these flags -- as intended by the original MFD_NOEXEC_SEAL patchset). Unfortunately, it turns out that even INFO-level logging is too extreme to enable by default and alternative solutions to the spam issue (such as doing more extreme rate-limiting per-task) are either too ugly or overkill for something as simple as emitting a log as a developer aid. Given that the flags are new and there is no harm to not specifying them (after all, we maintain backwards compatibility) we can just drop the warnings for now until some time in the future when most programs have migrated and distributions start using vm.memfd_noexec=1 (where failing to pass the flag would result in unexpected errors for programs that use executable memfds). Link: https://lkml.kernel.org/r/20230912-memfd-reduce-spam-v2-1-7d92a4964b6a@cyphar.com Fixes:434ed3350f("memfd: improve userspace warnings for missing exec-related flags") Fixes:2562d67b1b("revert "memfd: improve userspace warnings for missing exec-related flags".") Signed-off-by: Aleksa Sarai <cyphar@cyphar.com> Reported-by: Damian Tometzki <dtometzki@fedoraproject.org> Reviewed-by: Christian Brauner <brauner@kernel.org> Cc: Daniel Verkamp <dverkamp@chromium.org> Cc: Jeff Xu <jeffxu@google.com> Cc: Kees Cook <keescook@chromium.org> Cc: Shuah Khan <shuah@kernel.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
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.