The patch titled
Subject: kasan: suppress recursive reports for HW_TAGS
has been added to the -mm mm-unstable branch. Its filename is
kasan-suppress-recursive-reports-for-hw_tags-v2.patch
This patch will shortly appear at
https://git.kernel.org/pub/scm/linux/kernel/git/akpm/25-new.git/tree/patches/kasan-suppress-recursive-reports-for-hw_tags-v2.patch
This patch will later appear in the mm-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: Andrey Konovalov <andreyknvl@xxxxxxxxxx>
Subject: kasan: suppress recursive reports for HW_TAGS
Date: Wed, 29 Mar 2023 20:37:48 +0200
disable preemption instead of migration, fix comment typo
Link: https://lkml.kernel.org/r/d14417c8bc5eea7589e99381203432f15c0f9138.1680114854.git.andreyknvl@xxxxxxxxxx
Fixes: 2e903b914797 ("kasan, arm64: implement HW_TAGS runtime")
Signed-off-by: Andrey Konovalov <andreyknvl@xxxxxxxxxx>
Reported-by: Weizhao Ouyang <ouyangweizhao@xxxxxxxx>
Cc: Alexander Potapenko <glider@xxxxxxxxxx>
Cc: Andrey Ryabinin <ryabinin.a.a@xxxxxxxxx>
Cc: Catalin Marinas <catalin.marinas@xxxxxxx>
Cc: Dmitry Vyukov <dvyukov@xxxxxxxxxx>
Cc: Evgenii Stepanov <eugenis@xxxxxxxxxx>
Cc: Marco Elver <elver@xxxxxxxxxx>
Cc: Peter Collingbourne <pcc@xxxxxxxxxx>
Cc: Vincenzo Frascino <vincenzo.frascino@xxxxxxx>
Cc: Will Deacon <will@xxxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
mm/kasan/report.c | 8 ++++----
1 file changed, 4 insertions(+), 4 deletions(-)
--- a/mm/kasan/report.c~kasan-suppress-recursive-reports-for-hw_tags-v2
+++ a/mm/kasan/report.c
@@ -81,7 +81,7 @@ __setup("kasan_multi_shot", kasan_set_mu
*
* Hardware Tag-Based KASAN instead relies on:
* For #1: Resetting tags via kasan_reset_tag().
- * For #2: Supression of tag checks via CPU, see report_suppress_start/end().
+ * For #2: Suppression of tag checks via CPU, see report_suppress_start/end().
*/
static bool report_suppressed_sw(void)
{
@@ -96,10 +96,10 @@ static void report_suppress_start(void)
{
#ifdef CONFIG_KASAN_HW_TAGS
/*
- * Disable migration for the duration of printing a KASAN report, as
+ * Disable preemption for the duration of printing a KASAN report, as
* hw_suppress_tag_checks_start() disables checks on the current CPU.
*/
- migrate_disable();
+ preempt_disable();
hw_suppress_tag_checks_start();
#else
kasan_disable_current();
@@ -110,7 +110,7 @@ static void report_suppress_stop(void)
{
#ifdef CONFIG_KASAN_HW_TAGS
hw_suppress_tag_checks_stop();
- migrate_enable();
+ preempt_enable();
#else
kasan_enable_current();
#endif
_
Patches currently in -mm which might be from andreyknvl@xxxxxxxxxx are
kasan-drop-empty-tagging-related-defines.patch
kasan-arm64-rename-tagging-related-routines.patch
arm64-mte-rename-tco-routines-v2.patch
kasan-arm64-add-arch_suppress_tag_checks_start-stop.patch
kasan-arm64-add-arch_suppress_tag_checks_start-stop-v2.patch
kasan-suppress-recursive-reports-for-hw_tags.patch
kasan-suppress-recursive-reports-for-hw_tags-v2.patch
kcov-improve-documentation.patch
kcov-improve-documentation-v2.patch
kcov-improve-documentation-v3.patch
