The patch titled
Subject: kasan: update documentation for generic kasan
has been added to the -mm tree. Its filename is
kasan-update-documentation-for-generic-kasan.patch
This patch should soon appear at
https://ozlabs.org/~akpm/mmots/broken-out/kasan-update-documentation-for-generic-kasan.patch
and later at
https://ozlabs.org/~akpm/mmotm/broken-out/kasan-update-documentation-for-generic-kasan.patch
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 and is updated
there every 3-4 working days
------------------------------------------------------
From: Walter Wu <walter-zh.wu@xxxxxxxxxxxx>
Subject: kasan: update documentation for generic kasan
Generic KASAN also supports to record the last two workqueue stacks and
print them in KASAN report. So that need to update documentation.
Link: https://lkml.kernel.org/r/20201203023037.30792-1-walter-zh.wu@xxxxxxxxxxxx
Signed-off-by: Walter Wu <walter-zh.wu@xxxxxxxxxxxx>
Suggested-by: Marco Elver <elver@xxxxxxxxxx>
Acked-by: Marco Elver <elver@xxxxxxxxxx>
Reviewed-by: Dmitry Vyukov <dvyukov@xxxxxxxxxx>
Reviewed-by: Andrey Konovalov <andreyknvl@xxxxxxxxxx>
Cc: Andrey Ryabinin <aryabinin@xxxxxxxxxxxxx>
Cc: Alexander Potapenko <glider@xxxxxxxxxx>
Cc: Jonathan Corbet <corbet@xxxxxxx>
Cc: Lai Jiangshan <jiangshanlai@xxxxxxxxx>
Cc: Matthias Brugger <matthias.bgg@xxxxxxxxx>
Cc: Tejun Heo <tj@xxxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
Documentation/dev-tools/kasan.rst | 5 +++--
1 file changed, 3 insertions(+), 2 deletions(-)
--- a/Documentation/dev-tools/kasan.rst~kasan-update-documentation-for-generic-kasan
+++ a/Documentation/dev-tools/kasan.rst
@@ -190,8 +190,9 @@ function calls GCC directly inserts the
This option significantly enlarges kernel but it gives x1.1-x2 performance
boost over outline instrumented kernel.
-Generic KASAN prints up to 2 call_rcu() call stacks in reports, the last one
-and the second to last.
+Generic KASAN also reports the last 2 call stacks to creation of work that
+potentially has access to an object. Call stacks for the following are shown:
+call_rcu() and workqueue queuing.
Software tag-based KASAN
~~~~~~~~~~~~~~~~~~~~~~~~
_
Patches currently in -mm which might be from walter-zh.wu@xxxxxxxxxxxx are
workqueue-kasan-record-workqueue-stack.patch
kasan-print-workqueue-stack.patch
lib-test_kasanc-add-workqueue-test-case.patch
kasan-update-documentation-for-generic-kasan.patch
