[PW_SID:1057600] mm/kasan: make kasan=on|off work for all three modes by linux-riscv-bot · Pull Request #1497 · linux-riscv/linux

linux-riscv-bot · 2026-02-25T08:46:37Z

PR for series 1057600 applied to workflow__riscv__fixes

Name: mm/kasan: make kasan=on|off work for all three modes
URL: https://patchwork.kernel.org/project/linux-riscv/list/?series=1057600
Version: 5

…asan is disabled The current codes only check if kasan is disabled for hw_tags mode. Here add the conditional checks for functional functions of generic mode and sw_tags mode. And also add a helper __kasan_cache_shrink() in mm/kasan/generic.c so that the conditional check is done in include/linux/kasan.h. This is prepared for later adding kernel parameter kasan=on|off for all three kasan modes. Signed-off-by: Baoquan He <bhe@redhat.com> Signed-off-by: Linux RISC-V bot <linux.riscv.bot@gmail.com>

And change it to be a bool variable. This is prepared for later usage. Signed-off-by: Baoquan He <bhe@redhat.com> Signed-off-by: Linux RISC-V bot <linux.riscv.bot@gmail.com>

This allows generic and sw_tags to be set in kernel cmdline too. Signed-off-by: Baoquan He <bhe@redhat.com> Signed-off-by: Linux RISC-V bot <linux.riscv.bot@gmail.com>

Now everything is ready, setting kasan=off can disable kasan for all three modes. Signed-off-by: Baoquan He <bhe@redhat.com> Signed-off-by: Linux RISC-V bot <linux.riscv.bot@gmail.com>

Here, kasan is disabled if specified 'kasan=off' in kernel cmdline. Signed-off-by: Baoquan He <bhe@redhat.com> Signed-off-by: Linux RISC-V bot <linux.riscv.bot@gmail.com>

Here, kasan is disabled if specified 'kasan=off' in kernel cmdline. And also call jump_label_init() early in setup_arch() so that later kasan_init() can enable static key kasan_flag_enabled. Put jump_label_init() beofre parse_early_param() as other architectures do. Signed-off-by: Baoquan He <bhe@redhat.com> Cc: linux-arm-kernel@lists.infradead.org Signed-off-by: Linux RISC-V bot <linux.riscv.bot@gmail.com>

Here, kasan is disabled if specified 'kasan=off' in kernel cmdline. And also need skip kasan_populate_early_vm_area_shadow() if kasan is disabled. Signed-off-by: Baoquan He <bhe@redhat.com> Cc: linux-arm-kernel@lists.infradead.org Signed-off-by: Linux RISC-V bot <linux.riscv.bot@gmail.com>

Here, kasan is disabled if specified 'kasan=off' in kernel cmdline. Signed-off-by: Baoquan He <bhe@redhat.com> Cc: loongarch@lists.linux.dev Signed-off-by: Linux RISC-V bot <linux.riscv.bot@gmail.com>

Here, kasan is disabled if specified 'kasan=off' in kernel cmdline. This includes 32bit, book3s/64 and book3e/64. Signed-off-by: Baoquan He <bhe@redhat.com> Cc: linuxppc-dev@lists.ozlabs.org Signed-off-by: Linux RISC-V bot <linux.riscv.bot@gmail.com>

Here, kasan is disabled if specified 'kasan=off' in kernel cmdline. Signed-off-by: Baoquan He <bhe@redhat.com> Cc: linux-riscv@lists.infradead.org Signed-off-by: Linux RISC-V bot <linux.riscv.bot@gmail.com>

Here, kasan is disabled if specified 'kasan=off' in kernel cmdline. Signed-off-by: Baoquan He <bhe@redhat.com> Cc: x86@kernel.org Signed-off-by: Linux RISC-V bot <linux.riscv.bot@gmail.com>

Here, kasan is disabled if specified 'kasan=off' in kernel cmdline. And also call jump_label_init() early in setup_arch() so that later kasan_init() can enable static key kasan_flag_enabled. Put jump_label_init() beofre parse_early_param() as other architectures do. Signed-off-by: Baoquan He <bhe@redhat.com> Cc: Chris Zankel <chris@zankel.net> Cc: Max Filippov <jcmvbkbc@gmail.com> Signed-off-by: Linux RISC-V bot <linux.riscv.bot@gmail.com>

Here, kasan is disabled if specified 'kasan=off' in kernel cmdline. And also wrap up the kasan code into CONFIG_KASAN ifdeffery scope. Signed-off-by: Baoquan He <bhe@redhat.com> Cc: linux-um@lists.infradead.org Signed-off-by: Linux RISC-V bot <linux.riscv.bot@gmail.com>

And also remove the relevant description in dev-tools/kasan.rst which is hw_tags specificially. Signed-off-by: Baoquan He <bhe@redhat.com> Signed-off-by: Linux RISC-V bot <linux.riscv.bot@gmail.com>

Since commit 1e338f4 ("kasan: introduce ARCH_DEFER_KASAN and unify static key across modes"), kasan_arch_is_ready() has been dead code. And up to now, ARCH_DEFER_KASAN is useless too because of code change for 'kasan=on|off'. Here clean them up. Signed-off-by: Baoquan He <bhe@redhat.com> Signed-off-by: Linux RISC-V bot <linux.riscv.bot@gmail.com>

linux-riscv-bot · 2026-02-25T08:53:01Z

Patch 1: "[v5,01/15] mm/kasan: add conditional checks in functions to return directly if kasan is disabled"
build-rv32-defconfig
Desc: Builds riscv32 defconfig
Duration: 137.70 seconds
Result: PASS

linux-riscv-bot · 2026-02-25T09:28:59Z

Patch 1: "[v5,01/15] mm/kasan: add conditional checks in functions to return directly if kasan is disabled"
build-rv64-clang-allmodconfig
Desc: Builds riscv64 allmodconfig with Clang, and checks for errors and added warnings
Duration: 2156.09 seconds
Result: PASS

linux-riscv-bot · 2026-02-25T10:18:00Z

Patch 1: "[v5,01/15] mm/kasan: add conditional checks in functions to return directly if kasan is disabled"
build-rv64-gcc-allmodconfig
Desc: Builds riscv64 allmodconfig with GCC, and checks for errors and added warnings
Duration: 2939.13 seconds
Result: PASS

linux-riscv-bot · 2026-02-25T10:18:28Z

Patch 1: "[v5,01/15] mm/kasan: add conditional checks in functions to return directly if kasan is disabled"
build-rv64-nommu-k210-defconfig
Desc: Builds riscv64 defconfig with NOMMU for K210
Duration: 26.31 seconds
Result: PASS

linux-riscv-bot · 2026-02-25T10:18:57Z

Patch 1: "[v5,01/15] mm/kasan: add conditional checks in functions to return directly if kasan is disabled"
build-rv64-nommu-k210-virt
Desc: Builds riscv64 defconfig with NOMMU for the virt platform
Duration: 27.84 seconds
Result: PASS

linux-riscv-bot · 2026-02-25T10:19:01Z

Patch 1: "[v5,01/15] mm/kasan: add conditional checks in functions to return directly if kasan is disabled"
checkpatch
Desc: Runs checkpatch.pl on the patch
Duration: 1.98 seconds
Result: PASS

linux-riscv-bot · 2026-02-25T10:20:26Z

Patch 1: "[v5,01/15] mm/kasan: add conditional checks in functions to return directly if kasan is disabled"
dtb-warn-rv64
Desc: Checks for Device Tree warnings/errors
Duration: 83.66 seconds
Result: PASS

linux-riscv-bot · 2026-02-25T10:20:28Z

Patch 1: "[v5,01/15] mm/kasan: add conditional checks in functions to return directly if kasan is disabled"
header-inline
Desc: Detects static functions without inline keyword in header files
Duration: 0.24 seconds
Result: PASS

linux-riscv-bot · 2026-02-25T10:20:30Z

Patch 1: "[v5,01/15] mm/kasan: add conditional checks in functions to return directly if kasan is disabled"
kdoc
Desc: Detects for kdoc errors
Duration: 0.91 seconds
Result: PASS

linux-riscv-bot · 2026-02-25T10:20:32Z

Patch 1: "[v5,01/15] mm/kasan: add conditional checks in functions to return directly if kasan is disabled"
module-param
Desc: Detect module_param changes
Duration: 0.26 seconds
Result: PASS

linux-riscv-bot · 2026-02-25T10:20:34Z

Patch 1: "[v5,01/15] mm/kasan: add conditional checks in functions to return directly if kasan is disabled"
verify-fixes
Desc: Verifies that the Fixes: tags exist
Duration: 0.21 seconds
Result: PASS

linux-riscv-bot · 2026-02-25T10:20:36Z

Patch 1: "[v5,01/15] mm/kasan: add conditional checks in functions to return directly if kasan is disabled"
verify-signedoff
Desc: Verifies that Signed-off-by: tags are correct
Duration: 0.30 seconds
Result: PASS

linux-riscv-bot · 2026-02-25T10:23:09Z

Patch 2: "[v5,02/15] mm/kasan: rename 'kasan_arg' to 'kasan_arg_disabled'"
build-rv32-defconfig
Desc: Builds riscv32 defconfig
Duration: 137.28 seconds
Result: PASS

linux-riscv-bot · 2026-02-25T10:39:49Z

Patch 2: "[v5,02/15] mm/kasan: rename 'kasan_arg' to 'kasan_arg_disabled'"
build-rv64-clang-allmodconfig
Desc: Builds riscv64 allmodconfig with Clang, and checks for errors and added warnings
Duration: 998.94 seconds
Result: PASS

linux-riscv-bot · 2026-02-25T11:02:18Z

Patch 2: "[v5,02/15] mm/kasan: rename 'kasan_arg' to 'kasan_arg_disabled'"
build-rv64-gcc-allmodconfig
Desc: Builds riscv64 allmodconfig with GCC, and checks for errors and added warnings
Duration: 1347.10 seconds
Result: PASS

linux-riscv-bot · 2026-02-25T17:48:30Z

Patch 9: "[v5,09/15] arch/powerpc: don't initialize kasan if it's disabled"
header-inline
Desc: Detects static functions without inline keyword in header files
Duration: 0.22 seconds
Result: PASS

linux-riscv-bot · 2026-02-25T17:48:32Z

Patch 9: "[v5,09/15] arch/powerpc: don't initialize kasan if it's disabled"
kdoc
Desc: Detects for kdoc errors
Duration: 0.87 seconds
Result: PASS

linux-riscv-bot · 2026-02-25T17:48:34Z

Patch 9: "[v5,09/15] arch/powerpc: don't initialize kasan if it's disabled"
module-param
Desc: Detect module_param changes
Duration: 0.25 seconds
Result: PASS

linux-riscv-bot · 2026-02-25T17:48:36Z

Patch 9: "[v5,09/15] arch/powerpc: don't initialize kasan if it's disabled"
verify-fixes
Desc: Verifies that the Fixes: tags exist
Duration: 0.22 seconds
Result: PASS

linux-riscv-bot · 2026-02-25T17:48:38Z

Patch 9: "[v5,09/15] arch/powerpc: don't initialize kasan if it's disabled"
verify-signedoff
Desc: Verifies that Signed-off-by: tags are correct
Duration: 0.29 seconds
Result: PASS

linux-riscv-bot · 2026-02-25T17:51:10Z

Patch 10: "[v5,10/15] arch/riscv: don't initialize kasan if it's disabled"
build-rv32-defconfig
Desc: Builds riscv32 defconfig
Duration: 137.61 seconds
Result: PASS

linux-riscv-bot · 2026-02-25T18:09:49Z

Patch 10: "[v5,10/15] arch/riscv: don't initialize kasan if it's disabled"
build-rv64-clang-allmodconfig
Desc: Builds riscv64 allmodconfig with Clang, and checks for errors and added warnings
Duration: 1117.62 seconds
Result: PASS

linux-riscv-bot · 2026-02-25T18:37:11Z

Patch 10: "[v5,10/15] arch/riscv: don't initialize kasan if it's disabled"
build-rv64-gcc-allmodconfig
Desc: Builds riscv64 allmodconfig with GCC, and checks for errors and added warnings
Duration: 1640.07 seconds
Result: PASS

linux-riscv-bot · 2026-02-25T18:37:39Z

Patch 10: "[v5,10/15] arch/riscv: don't initialize kasan if it's disabled"
build-rv64-nommu-k210-defconfig
Desc: Builds riscv64 defconfig with NOMMU for K210
Duration: 26.78 seconds
Result: PASS

linux-riscv-bot · 2026-02-25T18:38:09Z

Patch 10: "[v5,10/15] arch/riscv: don't initialize kasan if it's disabled"
build-rv64-nommu-k210-virt
Desc: Builds riscv64 defconfig with NOMMU for the virt platform
Duration: 28.00 seconds
Result: PASS

linux-riscv-bot · 2026-02-25T18:38:11Z

Patch 10: "[v5,10/15] arch/riscv: don't initialize kasan if it's disabled"
checkpatch
Desc: Runs checkpatch.pl on the patch
Duration: 0.85 seconds
Result: PASS

linux-riscv-bot · 2026-02-25T18:39:36Z

Patch 10: "[v5,10/15] arch/riscv: don't initialize kasan if it's disabled"
dtb-warn-rv64
Desc: Checks for Device Tree warnings/errors
Duration: 83.55 seconds
Result: PASS

linux-riscv-bot · 2026-02-25T18:39:39Z

Patch 10: "[v5,10/15] arch/riscv: don't initialize kasan if it's disabled"
header-inline
Desc: Detects static functions without inline keyword in header files
Duration: 0.23 seconds
Result: PASS

linux-riscv-bot · 2026-02-25T18:39:41Z

Patch 10: "[v5,10/15] arch/riscv: don't initialize kasan if it's disabled"
kdoc
Desc: Detects for kdoc errors
Duration: 0.89 seconds
Result: PASS

linux-riscv-bot · 2026-02-25T18:39:43Z

Patch 10: "[v5,10/15] arch/riscv: don't initialize kasan if it's disabled"
module-param
Desc: Detect module_param changes
Duration: 0.24 seconds
Result: PASS

linux-riscv-bot · 2026-02-25T18:39:45Z

Patch 10: "[v5,10/15] arch/riscv: don't initialize kasan if it's disabled"
verify-fixes
Desc: Verifies that the Fixes: tags exist
Duration: 0.21 seconds
Result: PASS

linux-riscv-bot · 2026-02-25T18:39:47Z

Patch 10: "[v5,10/15] arch/riscv: don't initialize kasan if it's disabled"
verify-signedoff
Desc: Verifies that Signed-off-by: tags are correct
Duration: 0.30 seconds
Result: PASS

linux-riscv-bot · 2026-02-25T18:42:20Z

Patch 11: "[v5,11/15] arch/x86: don't initialize kasan if it's disabled"
build-rv32-defconfig
Desc: Builds riscv32 defconfig
Duration: 138.09 seconds
Result: PASS

linux-riscv-bot · 2026-02-25T18:59:09Z

Patch 11: "[v5,11/15] arch/x86: don't initialize kasan if it's disabled"
build-rv64-clang-allmodconfig
Desc: Builds riscv64 allmodconfig with Clang, and checks for errors and added warnings
Duration: 1007.80 seconds
Result: PASS

linux-riscv-bot · 2026-02-25T19:21:48Z

Patch 11: "[v5,11/15] arch/x86: don't initialize kasan if it's disabled"
build-rv64-gcc-allmodconfig
Desc: Builds riscv64 allmodconfig with GCC, and checks for errors and added warnings
Duration: 1357.72 seconds
Result: PASS

linux-riscv-bot · 2026-02-25T19:22:18Z

Patch 11: "[v5,11/15] arch/x86: don't initialize kasan if it's disabled"
build-rv64-nommu-k210-defconfig
Desc: Builds riscv64 defconfig with NOMMU for K210
Duration: 27.06 seconds
Result: PASS

linux-riscv-bot · 2026-02-25T19:22:47Z

Patch 11: "[v5,11/15] arch/x86: don't initialize kasan if it's disabled"
build-rv64-nommu-k210-virt
Desc: Builds riscv64 defconfig with NOMMU for the virt platform
Duration: 27.97 seconds
Result: PASS

linux-riscv-bot · 2026-02-25T19:22:50Z

Patch 11: "[v5,11/15] arch/x86: don't initialize kasan if it's disabled"
checkpatch
Desc: Runs checkpatch.pl on the patch
Duration: 0.75 seconds
Result: PASS

linux-riscv-bot · 2026-02-25T19:24:15Z

Patch 11: "[v5,11/15] arch/x86: don't initialize kasan if it's disabled"
dtb-warn-rv64
Desc: Checks for Device Tree warnings/errors
Duration: 83.66 seconds
Result: PASS

linux-riscv-bot · 2026-02-25T19:24:17Z

Patch 11: "[v5,11/15] arch/x86: don't initialize kasan if it's disabled"
header-inline
Desc: Detects static functions without inline keyword in header files
Duration: 0.23 seconds
Result: PASS

linux-riscv-bot · 2026-02-25T19:24:20Z

Patch 11: "[v5,11/15] arch/x86: don't initialize kasan if it's disabled"
kdoc
Desc: Detects for kdoc errors
Duration: 0.82 seconds
Result: PASS

linux-riscv-bot · 2026-02-25T19:24:22Z

Patch 11: "[v5,11/15] arch/x86: don't initialize kasan if it's disabled"
module-param
Desc: Detect module_param changes
Duration: 0.24 seconds
Result: PASS

linux-riscv-bot · 2026-02-25T19:24:23Z

Patch 11: "[v5,11/15] arch/x86: don't initialize kasan if it's disabled"
verify-fixes
Desc: Verifies that the Fixes: tags exist
Duration: 0.21 seconds
Result: PASS

linux-riscv-bot · 2026-02-25T19:24:25Z

Patch 11: "[v5,11/15] arch/x86: don't initialize kasan if it's disabled"
verify-signedoff
Desc: Verifies that Signed-off-by: tags are correct
Duration: 0.30 seconds
Result: PASS

linux-riscv-bot · 2026-02-25T19:26:56Z

Patch 12: "[v5,12/15] arch/xtensa: don't initialize kasan if it's disabled"
build-rv32-defconfig
Desc: Builds riscv32 defconfig
Duration: 137.07 seconds
Result: PASS

Baoquan He added 15 commits February 25, 2026 08:46

mm/kasan: rename 'kasan_arg' to 'kasan_arg_disabled'

41d7e6d

And change it to be a bool variable. This is prepared for later usage. Signed-off-by: Baoquan He <bhe@redhat.com> Signed-off-by: Linux RISC-V bot <linux.riscv.bot@gmail.com>

mm/kasan: mm/kasan: move kasan= code to common place

2733b05

This allows generic and sw_tags to be set in kernel cmdline too. Signed-off-by: Baoquan He <bhe@redhat.com> Signed-off-by: Linux RISC-V bot <linux.riscv.bot@gmail.com>

mm/kasan: make kasan=on|off take effect for all three modes

0b297c9

Now everything is ready, setting kasan=off can disable kasan for all three modes. Signed-off-by: Baoquan He <bhe@redhat.com> Signed-off-by: Linux RISC-V bot <linux.riscv.bot@gmail.com>

mm/kasan/sw_tags: don't initialize kasan if it's disabled

d524c6c

Here, kasan is disabled if specified 'kasan=off' in kernel cmdline. Signed-off-by: Baoquan He <bhe@redhat.com> Signed-off-by: Linux RISC-V bot <linux.riscv.bot@gmail.com>

arch/loongarch: don't initialize kasan if it's disabled

4dbaf59

Here, kasan is disabled if specified 'kasan=off' in kernel cmdline. Signed-off-by: Baoquan He <bhe@redhat.com> Cc: loongarch@lists.linux.dev Signed-off-by: Linux RISC-V bot <linux.riscv.bot@gmail.com>

arch/riscv: don't initialize kasan if it's disabled

6a87ba6

Here, kasan is disabled if specified 'kasan=off' in kernel cmdline. Signed-off-by: Baoquan He <bhe@redhat.com> Cc: linux-riscv@lists.infradead.org Signed-off-by: Linux RISC-V bot <linux.riscv.bot@gmail.com>

arch/x86: don't initialize kasan if it's disabled

22d66c6

Here, kasan is disabled if specified 'kasan=off' in kernel cmdline. Signed-off-by: Baoquan He <bhe@redhat.com> Cc: x86@kernel.org Signed-off-by: Linux RISC-V bot <linux.riscv.bot@gmail.com>

mm/kasan: add document into kernel-parameters.txt

ce3b5e6

And also remove the relevant description in dev-tools/kasan.rst which is hw_tags specificially. Signed-off-by: Baoquan He <bhe@redhat.com> Signed-off-by: Linux RISC-V bot <linux.riscv.bot@gmail.com>

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