Displaying 6 results from an estimated 6 matches for "fail_kvmalloc_fallback_probability".
2018 Apr 25
7
[PATCH v4] fault-injection: introduce kvmalloc fallback options
...uses kvmalloc and then
Unfortunately,
> uses DMA-API on the returned memory or frees it with kfree. Such bugs were
> found in the virtio-net driver, dm-integrity or RHEL7 powerpc-specific
> code. This options helps to test for these bugs.
>
> The patch introduces a config option FAIL_KVMALLOC_FALLBACK_PROBABILITY.
> It can be enabled in distribution debug kernels, so that kvmalloc abuse
> can be tested by the users. The default can be overriden with
overridden
> "kvmalloc_fallback" parameter or in /sys/kernel/debug/kvmalloc_fallback/.
>...
2018 Apr 25
7
[PATCH v4] fault-injection: introduce kvmalloc fallback options
...uses kvmalloc and then
Unfortunately,
> uses DMA-API on the returned memory or frees it with kfree. Such bugs were
> found in the virtio-net driver, dm-integrity or RHEL7 powerpc-specific
> code. This options helps to test for these bugs.
>
> The patch introduces a config option FAIL_KVMALLOC_FALLBACK_PROBABILITY.
> It can be enabled in distribution debug kernels, so that kvmalloc abuse
> can be tested by the users. The default can be overriden with
overridden
> "kvmalloc_fallback" parameter or in /sys/kernel/debug/kvmalloc_fallback/.
>...
2018 Apr 24
4
[PATCH v3] kvmalloc: always use vmalloc if CONFIG_DEBUG_SG
On Tue 24-04-18 13:28:49, Mikulas Patocka wrote:
>
>
> On Tue, 24 Apr 2018, Michal Hocko wrote:
>
> > On Tue 24-04-18 13:00:11, Mikulas Patocka wrote:
> > >
> > >
> > > On Tue, 24 Apr 2018, Michal Hocko wrote:
> > >
> > > > On Tue 24-04-18 11:50:30, Mikulas Patocka wrote:
> > > > >
> > > > >
2018 Apr 25
0
[PATCH v5] fault-injection: introduce kvmalloc fallback options
...vmalloc and then
> > uses DMA-API on the returned memory or frees it with kfree. Such bugs were
> > found in the virtio-net driver, dm-integrity or RHEL7 powerpc-specific
> > code. This options helps to test for these bugs.
> >
> > The patch introduces a config option FAIL_KVMALLOC_FALLBACK_PROBABILITY.
> > It can be enabled in distribution debug kernels, so that kvmalloc abuse
> > can be tested by the users. The default can be overridden with
> > "kvmalloc_fallback" parameter or in /sys/kernel/debug/kvmalloc_fallback/.
> >
>
> Do we really need the new c...
2018 Apr 25
0
[PATCH v5] fault-injection: introduce kvmalloc fallback options
...fortunately, some kernel code has bugs - it uses kvmalloc and then
uses DMA-API on the returned memory or frees it with kfree. Such bugs were
found in the virtio-net driver, dm-integrity or RHEL7 powerpc-specific
code. This options helps to test for these bugs.
The patch introduces a config option FAIL_KVMALLOC_FALLBACK_PROBABILITY.
It can be enabled in distribution debug kernels, so that kvmalloc abuse
can be tested by the users. The default can be overridden with
"kvmalloc_fallback" parameter or in /sys/kernel/debug/kvmalloc_fallback/.
Signed-off-by: Mikulas Patocka <mpatocka at redhat.com>
---
Documentat...
2018 Apr 25
0
[PATCH v4] fault-injection: introduce kvmalloc fallback options
...option for the default on makes sense
> to me.
Yes - the debug kernels use the same default kernel parameters as
non-debug kernels and it is expected that all debug features are enabled
by default.
Here I'm sending the patch using the fault-injection framework and the new
option CONFIG_FAIL_KVMALLOC_FALLBACK_PROBABILITY.
Mikulas
From: Mikulas Patocka <mpatocka at redhat.com>
Subject: [PATCH v4] fault-injection: introduce kvmalloc fallback options
This patch introduces a fault-injection option "kvmalloc_fallback". This
option makes kvmalloc randomly fall back to vmalloc.
Unfortunatelly, some k...