The patch titled Subject: mm: fix dereferencing possible ERR_PTR has been added to the -mm mm-hotfixes-unstable branch. Its filename is mm-fix-dereferencing-possible-err_ptr.patch

This patch will shortly appear at https://git.kernel.org/pub/scm/linux/kernel/git/akpm/25-new.git/tree/patches...

This patch will later appear in the mm-hotfixes-unstable branch at git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm

Before you just go and hit "reply", please: a) Consider who else should be cc'ed b) Prefer to cc a suitable mailing list as well c) Ideally: find the original patch on the mailing list and do a reply-to-all to that, adding suitable additional cc's

*** Remember to use Documentation/process/submit-checklist.rst when testing your code ***

The -mm tree is included into linux-next via the mm-everything branch at git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm and is updated there every 2-3 working days

------------------------------------------------------ From: Binyi Han dantengknight@gmail.com Subject: mm: fix dereferencing possible ERR_PTR Date: Sun, 4 Sep 2022 00:46:47 -0700

Smatch checker complains that 'secretmem_mnt' dereferencing possible ERR_PTR(). Let the function return if 'secretmem_mnt' is ERR_PTR, to avoid deferencing it.

Link: https://lkml.kernel.org/r/20220904074647.GA64291@cloud-MacBookPro Fixes: 1507f51255c9f ("mm: introduce memfd_secret system call to create "secret" memory areas") Signed-off-by: Binyi Han dantengknight@gmail.com Reviewed-by: Andrew Morton akpm@linux-foudation.org Cc: Mike Rapoport rppt@kernel.org Cc: Ammar Faizi ammarfaizi2@gnuweeb.org Cc: Hagen Paul Pfeifer hagen@jauu.net Cc: James Bottomley James.Bottomley@HansenPartnership.com Cc: stable@vger.kernel.org Signed-off-by: Andrew Morton akpm@linux-foundation.org ---

mm/secretmem.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)

--- a/mm/secretmem.c~mm-fix-dereferencing-possible-err_ptr +++ a/mm/secretmem.c @@ -285,7 +285,7 @@ static int secretmem_init(void)

secretmem_mnt = kern_mount(&secretmem_fs); if (IS_ERR(secretmem_mnt)) - ret = PTR_ERR(secretmem_mnt); + return PTR_ERR(secretmem_mnt);

/* prevent secretmem mappings from ever getting PROT_EXEC */ secretmem_mnt->mnt_flags |= MNT_NOEXEC; _

Patches currently in -mm which might be from dantengknight@gmail.com are

mm-fix-dereferencing-possible-err_ptr.patch