From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-1.web.codeaurora.org [10.30.226.201]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id E9F4B1FBA for ; Sat, 15 Jun 2024 01:12:37 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=10.30.226.201 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1718413958; cv=none; b=FrggDwdjRfr0p4xIjEjItH3r2ZApx5odr+7lutTCQaVMaVNjhhBaNzFGifRsGH9bXzK3DsbZSEkT8RsrVZ2tiyU/MdYge14Fng4jOa+SIA+4GbllvRyjXA9PTiXmCWDLPETr7sMYHZ2qwd0OF+W17BOQYYIUhQ5ASaYB6l6IaUM= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1718413958; c=relaxed/simple; bh=JeLNoTJMRGbIpDQ8j70PIVN4rGyFL+PJFEOs8vnTi5E=; h=Date:To:From:Subject:Message-Id; b=mMf0UDB7cjwy0hgqkWhCKBKff+LZsReSYMm6XKEwuEJ6oIXUkz0aQxWmechLAvjTf8XBIS3Ke8KRZabIyy7sBrioNfTkPGJqxQXYWkRkVIn3N/3cjzjjzXgshw1rdPIZb3Y68tbDZGbrdtpnFDZPAwlKKMiDdva/GPDOrSQfBQs= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linux-foundation.org header.i=@linux-foundation.org header.b=ugKyaV4+; arc=none smtp.client-ip=10.30.226.201 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linux-foundation.org header.i=@linux-foundation.org header.b="ugKyaV4+" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 6ED42C2BD10; Sat, 15 Jun 2024 01:12:37 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linux-foundation.org; s=korg; t=1718413957; bh=JeLNoTJMRGbIpDQ8j70PIVN4rGyFL+PJFEOs8vnTi5E=; h=Date:To:From:Subject:From; b=ugKyaV4+LdG3Q8nADg4IVOCho/4oBYgZEEa4Nus9Aq80FgqIPhTsu8IbPz+9EPloA vJb/aqHQnT34XzgUaZdLAZ1MgzAN99G155tgPigypmuAeHXHf+F+C4gMOVgfOPWM7B FVs5ii9cowakAhFo4NdaLT65AOe9JpSARUOkpxjc= Date: Fri, 14 Jun 2024 18:12:36 -0700 To: mm-commits@vger.kernel.org,sroettger@google.com,rdunlap@infradead.org,keescook@chromium.org,jorgelo@chromium.org,jannh@google.com,david@redhat.com,adhemerval.zanella@linaro.org,jeffxu@chromium.org,akpm@linux-foundation.org From: Andrew Morton Subject: + proc-pid-smaps-add-mseal-info-for-vma.patch added to mm-hotfixes-unstable branch Message-Id: <20240615011237.6ED42C2BD10@smtp.kernel.org> Precedence: bulk X-Mailing-List: mm-commits@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: The patch titled Subject: /proc/pid/smaps: add mseal info for vma has been added to the -mm mm-hotfixes-unstable branch. Its filename is proc-pid-smaps-add-mseal-info-for-vma.patch This patch will shortly appear at https://git.kernel.org/pub/scm/linux/kernel/git/akpm/25-new.git/tree/patches/proc-pid-smaps-add-mseal-info-for-vma.patch 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: Jeff Xu Subject: /proc/pid/smaps: add mseal info for vma Date: Fri, 14 Jun 2024 23:20:14 +0000 Add sl in /proc/pid/smaps to indicate vma is sealed Link: https://lkml.kernel.org/r/20240614232014.806352-2-jeffxu@google.com Fixes: 8be7258aad44 ("mseal: add mseal syscall") Signed-off-by: Jeff Xu Cc: Adhemerval Zanella Cc: David Hildenbrand Cc: Jann Horn Cc: Jorge Lucangeli Obes Cc: Kees Cook Cc: Randy Dunlap Cc: Stephen Röttger Signed-off-by: Andrew Morton --- Documentation/filesystems/proc.rst | 1 + fs/proc/task_mmu.c | 3 +++ include/linux/mm.h | 5 +++++ mm/internal.h | 5 ----- 4 files changed, 9 insertions(+), 5 deletions(-) --- a/Documentation/filesystems/proc.rst~proc-pid-smaps-add-mseal-info-for-vma +++ a/Documentation/filesystems/proc.rst @@ -571,6 +571,7 @@ encoded manner. The codes are the follow um userfaultfd missing tracking uw userfaultfd wr-protect tracking ss shadow stack page + sl sealed == ======================================= Note that there is no guarantee that every flag and associated mnemonic will --- a/fs/proc/task_mmu.c~proc-pid-smaps-add-mseal-info-for-vma +++ a/fs/proc/task_mmu.c @@ -707,6 +707,9 @@ static void show_smap_vma_flags(struct s #ifdef CONFIG_X86_USER_SHADOW_STACK [ilog2(VM_SHADOW_STACK)] = "ss", #endif +#ifdef CONFIG_64BIT + [ilog2(VM_SEALED)] = "sl", +#endif }; size_t i; --- a/include/linux/mm.h~proc-pid-smaps-add-mseal-info-for-vma +++ a/include/linux/mm.h @@ -406,6 +406,11 @@ extern unsigned int kobjsize(const void #define VM_ALLOW_ANY_UNCACHED VM_NONE #endif +#ifdef CONFIG_64BIT +/* VM is sealed, in vm_flags */ +#define VM_SEALED _BITUL(63) +#endif + /* Bits set in the VMA until the stack is in its final location */ #define VM_STACK_INCOMPLETE_SETUP (VM_RAND_READ | VM_SEQ_READ | VM_STACK_EARLY) --- a/mm/internal.h~proc-pid-smaps-add-mseal-info-for-vma +++ a/mm/internal.h @@ -1435,11 +1435,6 @@ unsigned long shrink_slab(gfp_t gfp_mask int priority); #ifdef CONFIG_64BIT -/* VM is sealed, in vm_flags */ -#define VM_SEALED _BITUL(63) -#endif - -#ifdef CONFIG_64BIT static inline int can_do_mseal(unsigned long flags) { if (flags) _ Patches currently in -mm which might be from jeffxu@chromium.org are mm-memfd-add-documentation-for-mfd_noexec_seal-mfd_exec.patch mm-memfd-add-documentation-for-mfd_noexec_seal-mfd_exec-v2.patch mm-memfd-add-documentation-for-mfd_noexec_seal-mfd_exec-v3.patch proc-pid-smaps-add-mseal-info-for-vma.patch