From: Benjamin Berg
The larger memory space is useful to support more applications inside
UML. One example for this is ASAN instrumentation of userspace
applications which requires addresses that would otherwise not be
available.
Signed-off-by: Benjamin Berg
---
v2:
- Do not hide option behin
From: Benjamin Berg
When loading the UML binary, the host kernel will place the stack at the
highest possible address. It will then map the program name and
environment variables onto the start of the stack.
As such, an easy way to figure out the host_task_size is to use the
highest pointer to a
From: Benjamin Berg
The calculation was wrong as it only subtracted one and then rounded
down for alignment. However, this is incorrect if host_task_size is not
already aligned.
This probably worked fine because on 64 bit the host_task_size is bigger
than returned by os_get_top_address.
Signed-
From: Benjamin Berg
We may have a TASK_SIZE from the host that is bigger than UML is able to
address with a three-level pagetable. Guard against that by clipping the
maximum TASK_SIZE to the maximum addressable area.
Signed-off-by: Benjamin Berg
---
arch/um/kernel/um_arch.c | 7 ++-
1 file
From: Benjamin Berg
Using clone will not undo features that have been enabled by libc. An
example of this already happening is rseq, which could cause the kernel
to read/write memory of the userspace process. In the future the
standard library might also use mseal by default to protect itself,
wh
From: Benjamin Berg
The 64bit version did not have a stub_syscall1 function yet. Add it as
it will be useful to implement a static binary for stub loading.
Signed-off-by: Benjamin Berg
---
arch/x86/um/shared/sysdep/stub_64.h | 11 +++
1 file changed, 11 insertions(+)
diff --git a/arch
This function will be used by the new static stub binary.
Signed-off-by: Benjamin Berg
---
arch/x86/um/shared/sysdep/stub_32.h | 22 ++
arch/x86/um/shared/sysdep/stub_64.h | 16
2 files changed, 38 insertions(+)
diff --git a/arch/x86/um/shared/sysdep/stub_32
From: Benjamin Berg
The new version of the patchset uses execveat on a memfd instead of
cloning twice to disable rseq. This should be much more robust going
forward as it will also avoid issues with other new features like mseal.
This patchset fixes a few bugs, adds a new method of discovering t
Hi folks, how can I unsubscribe from this group.?
Thanks in advance.
S
> On 17 Jun 2024, at 07:04, Christoph Hellwig wrote:
>
> Move the nonrot flag into the queue_limits feature field so that it can
> be set atomically with the queue frozen.
>
> Use the chance to switch to defaulting to non-ro
On Wed, Jun 19, 2024 at 08:21:14AM -0600, Jens Axboe wrote:
> Please check for-6.11/block, as I pulled in the changes to the main
> block branch and that threw some merge conflicts mostly due to Damien's
> changes in for-6.11/block. While fixing those up, I also came across
> oddities like:
>
> (l
On 6/19/24 8:18 AM, Jens Axboe wrote:
>
> On Mon, 17 Jun 2024 08:04:27 +0200, Christoph Hellwig wrote:
>> this is the third and last major series to convert settings to
>> queue_limits for this merge window. After a bunch of prep patches to
>> get various drivers in shape, it moves all the queue_
On Mon, 17 Jun 2024 08:04:27 +0200, Christoph Hellwig wrote:
> this is the third and last major series to convert settings to
> queue_limits for this merge window. After a bunch of prep patches to
> get various drivers in shape, it moves all the queue_flags that specify
> driver controlled featu
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