The patch below does not apply to the 6.5-stable tree. If someone wants it applied there, or to any other stable or longterm tree, then please email the backport, including the original git commit id to stable@vger.kernel.org.
To reproduce the conflict and resubmit, you may use the following commands:
git fetch https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/ linux-6.5.y git checkout FETCH_HEAD git cherry-pick -x 2562d67b1bdf91c7395b0225d60fdeb26b4bc5a0 # <resolve conflicts, build, test, etc.> git commit -s git send-email --to 'stable@vger.kernel.org' --in-reply-to '2023090734-sudoku-catalyze-ef01@gregkh' --subject-prefix 'PATCH 6.5.y' HEAD^..
Possible dependencies:
2562d67b1bdf ("revert "memfd: improve userspace warnings for missing exec-related flags".") 434ed3350f57 ("memfd: improve userspace warnings for missing exec-related flags") 202e14222fad ("memfd: do not -EACCES old memfd_create() users with vm.memfd_noexec=2") badbbcd76545 ("selftests/memfd: sysctl: fix MEMFD_NOEXEC_SCOPE_NOEXEC_ENFORCED") 72de25913022 ("mm/memfd: sysctl: fix MEMFD_NOEXEC_SCOPE_NOEXEC_ENFORCED")
thanks,
greg k-h
------------------ original commit in Linus's tree ------------------
From 2562d67b1bdf91c7395b0225d60fdeb26b4bc5a0 Mon Sep 17 00:00:00 2001 From: Andrew Morton akpm@linux-foundation.org Date: Sat, 2 Sep 2023 15:59:31 -0700 Subject: [PATCH] revert "memfd: improve userspace warnings for missing exec-related flags".
This warning is telling userspace developers to pass MFD_EXEC and MFD_NOEXEC_SEAL to memfd_create(). Commit 434ed3350f57 ("memfd: improve userspace warnings for missing exec-related flags") made the warning more frequent and visible in the hope that this would accelerate the fixing of errant userspace.
But the overall effect is to generate far too much dmesg noise.
Fixes: 434ed3350f57 ("memfd: improve userspace warnings for missing exec-related flags") Reported-by: Damian Tometzki dtometzki@fedoraproject.org Closes: https://lkml.kernel.org/r/ZPFzCSIgZ4QuHsSC@fedora.fritz.box Cc: Aleksa Sarai cyphar@cyphar.com Cc: 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 Cc: stable@vger.kernel.org Signed-off-by: Andrew Morton akpm@linux-foundation.org
diff --git a/mm/memfd.c b/mm/memfd.c index 1cad1904fc26..2dba2cb6f0d0 100644 --- a/mm/memfd.c +++ b/mm/memfd.c @@ -316,7 +316,7 @@ SYSCALL_DEFINE2(memfd_create, return -EINVAL;
if (!(flags & (MFD_EXEC | MFD_NOEXEC_SEAL))) { - pr_info_ratelimited( + pr_warn_once( "%s[%d]: memfd_create() called without MFD_EXEC or MFD_NOEXEC_SEAL set\n", current->comm, task_pid_nr(current)); }