On Sat, Sep 07, 2024 at 08:27:52PM GMT, Lorenzo Stoakes wrote:
> On Fri, Aug 30, 2024 at 04:57:26PM GMT, Jeff Xu wrote:
> > On Fri, Aug 30, 2024 at 12:23 PM Lorenzo Stoakes
> > wrote:
> > >
> > > On Fri, Aug 30, 2024 at 07:43:12PM GMT, Lorenzo Stoakes wrote:
> > > > On Fri, Aug 30, 2024 at 06:02:3
On Sun, Sep 8, 2024 at 10:35 PM Pedro Falcato wrote:
> Hi,
>
> I agree with most of the points. Sitting down here to write unofficial
> guidelines for mseal behavior.
>
> mseal should seal regions and mark them immutable, which means their
> protection
> and contents (i
.dynamic .got .toc
04 .data .got.plt .bss
05 .dynamic
06 .data.rel.ro .dynamic .got .toc
07 .eh_frame_hdr
08
09 .note.gnu.build-id
So on that end, you can take my
Tested-by: Pedro Falcato
Although this still doesn't address the other bug I found
(https://gith
On Fri, Sep 29, 2023 at 4:24 AM Kees Cook wrote:
>
> From: "Eric W. Biederman"
>
> Implement a helper elf_load() that wraps elf_map() and performs all
> of the necessary work to ensure that when "memsz > filesz" the bytes
> described by "memsz > filesz" are zeroed.
>
> An outstanding issue is if
On Fri, Sep 29, 2023 at 4:24 AM Kees Cook wrote:
>
> While load_elf_library() is a libc5-ism, we can still replace most of
> its contents with elf_load() as well, further simplifying the code.
While I understand you want to break as little as possible (as the ELF
loader maintainer), I'm wondering
On Tue, Oct 8, 2024 at 5:09 AM wrote:
>
> From: Jeff Xu
>
> Update doc after in-loop change: mprotect/madvise can have
> partially updated and munmap is atomic.
>
> Fix indentation and clarify some sections to improve readability.
>
> Signed-off-by: Jeff Xu
Please reply to the points I raised:
On Mon, Sep 30, 2024 at 05:24:39PM -0700, Jeff Xu wrote:
> Hi Pedro
>
> On Sat, Sep 28, 2024 at 6:43 AM Pedro Falcato wrote:
> >
> > On Fri, Sep 27, 2024 at 06:29:30PM GMT, Jeff Xu wrote:
> > > Hi Pedro,
> > >
> > > On Fri, Sep
On Thu, Oct 17, 2024 at 09:20:20AM -0700, Jeff Xu wrote:
> On Thu, Oct 17, 2024 at 1:18 AM Lorenzo Stoakes
> wrote:
> >
> > NACK. Greg's bot got to it but...
> >
> > As per Greg's bot, no signed-off-by line.
> >
> Sorry for confusion, I wasn't meant to send this as a PATCH, but
> reporting the iss
properly, or Andrew can pick it up, whatever floats people's boats.
8<
>From dc5ec662dcb79156f4bdc1cba2a2575dce905ffa Mon Sep 17 00:00:00 2001
From: Pedro Falcato
Date: Thu, 17 Oct 2024 20:21:10 +0100
Subject: [PATCH] mm/mseal: Disallow madvise discard on file-private seale
On Thu, Oct 17, 2024 at 01:34:53PM -0700, Jeff Xu wrote:
> Hi Pedro
>
> On Thu, Oct 17, 2024 at 12:37 PM Pedro Falcato
> wrote:
> >
> > > For PROT_NONE mappings, the previous blocking of
> > > madvise(MADV_DONTNEED) is unnecessary. As PROT_NONE already pr
On Fri, Sep 27, 2024 at 06:29:30PM GMT, Jeff Xu wrote:
> Hi Pedro,
>
> On Fri, Sep 27, 2024 at 3:59 PM Pedro Falcato wrote:
> > > +
> > > + Blocked mm syscall:
> > > + - munmap
> > > + - mmap
> > > + - mremap
> &g
On Fri, Sep 27, 2024 at 06:52:09PM GMT, jef...@chromium.org wrote:
> From: Jeff Xu
>
> Update doc after in-loop change: mprotect/madvise can have
> partially updated and munmap is atomic.
>
> Fix indentation and clarify some sections to improve readability.
>
> Signed-off-by: Jeff Xu
> ---
>
On Wed, Feb 12, 2025 at 11:25 AM Lorenzo Stoakes
wrote:
>
> On Wed, Feb 12, 2025 at 03:21:48AM +, jef...@chromium.org wrote:
> > From: Jeff Xu
> >
> > The commit message in the first patch contains the full description of
> > this series.
>
> Sorry to nit, but it'd be useful to reproduce in t
On Thu, Jan 16, 2025 at 5:02 PM Benjamin Berg wrote:
>
> Hi Lorenzo,
>
> On Thu, 2025-01-16 at 15:48 +, Lorenzo Stoakes wrote:
> > On Wed, Jan 15, 2025 at 12:20:59PM -0800, Jeff Xu wrote:
> > > On Wed, Jan 15, 2025 at 11:46 AM Lorenzo Stoakes
> > > wrote:
> >
> > [SNIP]
> > >
> > > > I've mad
On Wed, Feb 12, 2025 at 2:02 PM Lorenzo Stoakes
wrote:
>
> (sorry I really am struggling to reply to mail as lore still seems to be
> broken).
>
> On Wed, Feb 12, 2025 at 12:37:50PM +, Pedro Falcato wrote:
> > On Wed, Feb 12, 2025 at 11:25 AM Lorenzo Stoakes
> >
On Mon, Feb 24, 2025 at 10:52 PM wrote:
>
> From: Jeff Xu
>
> This is V7 version, addressing comments from V6, without code logic
> change.
>
> --
>
> History:
> V7:
> - Remove cover letter from the first patch (Liam R. Howlett)
> - Change macro n
On Thu, Feb 13, 2025 at 8:47 PM Kees Cook wrote:
>
> On Thu, Feb 13, 2025 at 07:59:48PM +, Pedro Falcato wrote:
> > On Wed, Feb 12, 2025 at 2:02 PM Lorenzo Stoakes
> > wrote:
> > >
> > > (sorry I really am struggling to reply to mail as lore still seems
On Wed, Mar 12, 2025 at 3:28 PM Kees Cook wrote:
>
>
>
> On March 12, 2025 6:49:39 AM PDT, Lorenzo Stoakes
> wrote:
> >On Wed, Mar 12, 2025 at 12:21:17AM +, jef...@chromium.org wrote:
> >> From: Jeff Xu
> >>
> >> Initially, when mseal was introduced in 6.10, semantically, when a VMA
> >> wi
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