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
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------------------------------------------------------ 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