* Re: [RFC PATCH v2 4/4] fpga: add initial KUnit test suites
@ 2023-03-18 9:02 kernel test robot
0 siblings, 0 replies; 3+ messages in thread
From: kernel test robot @ 2023-03-18 9:02 UTC (permalink / raw)
To: oe-kbuild; +Cc: lkp
::::::
:::::: Manual check reason: "low confidence static check first_new_problem: drivers/fpga/tests/fake-fpga-region.c:146:2: warning: Undefined or garbage value returned to caller [clang-analyzer-core.uninitialized.UndefReturn]"
::::::
BCC: lkp@intel.com
CC: llvm@lists.linux.dev
CC: oe-kbuild-all@lists.linux.dev
In-Reply-To: <20230310170412.708363-5-marpagan@redhat.com>
References: <20230310170412.708363-5-marpagan@redhat.com>
TO: Marco Pagani <marpagan@redhat.com>
Hi Marco,
[FYI, it's a private test report for your RFC patch.]
[auto build test WARNING on linus/master]
[also build test WARNING on v6.3-rc2 next-20230317]
[If your patch is applied to the wrong git tree, kindly drop us a note.
And when submitting patch, we suggest to use '--base' as documented in
https://git-scm.com/docs/git-format-patch#_base_tree_information]
url: https://github.com/intel-lab-lkp/linux/commits/Marco-Pagani/fpga-add-fake-FPGA-manager/20230311-010757
patch link: https://lore.kernel.org/r/20230310170412.708363-5-marpagan%40redhat.com
patch subject: [RFC PATCH v2 4/4] fpga: add initial KUnit test suites
:::::: branch date: 8 days ago
:::::: commit date: 8 days ago
config: s390-randconfig-c005-20230312 (https://download.01.org/0day-ci/archive/20230318/202303181604.tXQ4uHom-lkp@intel.com/config)
compiler: clang version 17.0.0 (https://github.com/llvm/llvm-project 67409911353323ca5edf2049ef0df54132fa1ca7)
reproduce (this is a W=1 build):
wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross
chmod +x ~/bin/make.cross
# install s390 cross compiling tool for clang build
# apt-get install binutils-s390x-linux-gnu
# https://github.com/intel-lab-lkp/linux/commit/6af16afaf84ee6f061e6953eebca1a786c5be576
git remote add linux-review https://github.com/intel-lab-lkp/linux
git fetch --no-tags linux-review Marco-Pagani/fpga-add-fake-FPGA-manager/20230311-010757
git checkout 6af16afaf84ee6f061e6953eebca1a786c5be576
# save the config file
COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross ARCH=s390 clang-analyzer olddefconfig
COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross ARCH=s390 clang-analyzer
If you fix the issue, kindly add following tag where applicable
| Reported-by: kernel test robot <lkp@intel.com>
| Link: https://lore.kernel.org/r/202303181604.tXQ4uHom-lkp@intel.com/
clang_analyzer warnings: (new ones prefixed by >>)
^~~~~~~~~~~~~~~~~~~~~~
drivers/hwtracing/stm/core.c:633:2: note: Taking true branch
if (!stmf->output.nr_chans) {
^
drivers/hwtracing/stm/core.c:637:3: note: Taking false branch
get_task_comm(comm, current);
^
include/linux/sched.h:1989:2: note: expanded from macro 'get_task_comm'
BUILD_BUG_ON(sizeof(buf) != TASK_COMM_LEN); \
^
include/linux/build_bug.h:50:2: note: expanded from macro 'BUILD_BUG_ON'
BUILD_BUG_ON_MSG(condition, "BUILD_BUG_ON failed: " #condition)
^
include/linux/build_bug.h:39:37: note: expanded from macro 'BUILD_BUG_ON_MSG'
#define BUILD_BUG_ON_MSG(cond, msg) compiletime_assert(!(cond), msg)
^
include/linux/compiler_types.h:397:2: note: expanded from macro 'compiletime_assert'
_compiletime_assert(condition, msg, __compiletime_assert_, __COUNTER__)
^
include/linux/compiler_types.h:385:2: note: expanded from macro '_compiletime_assert'
__compiletime_assert(condition, msg, prefix, suffix)
^
include/linux/compiler_types.h:377:3: note: expanded from macro '__compiletime_assert'
if (!(condition)) \
^
drivers/hwtracing/stm/core.c:637:3: note: Loop condition is false. Exiting loop
get_task_comm(comm, current);
^
include/linux/sched.h:1989:2: note: expanded from macro 'get_task_comm'
BUILD_BUG_ON(sizeof(buf) != TASK_COMM_LEN); \
^
include/linux/build_bug.h:50:2: note: expanded from macro 'BUILD_BUG_ON'
BUILD_BUG_ON_MSG(condition, "BUILD_BUG_ON failed: " #condition)
^
include/linux/build_bug.h:39:37: note: expanded from macro 'BUILD_BUG_ON_MSG'
#define BUILD_BUG_ON_MSG(cond, msg) compiletime_assert(!(cond), msg)
^
include/linux/compiler_types.h:397:2: note: expanded from macro 'compiletime_assert'
_compiletime_assert(condition, msg, __compiletime_assert_, __COUNTER__)
^
include/linux/compiler_types.h:385:2: note: expanded from macro '_compiletime_assert'
__compiletime_assert(condition, msg, prefix, suffix)
^
include/linux/compiler_types.h:369:2: note: expanded from macro '__compiletime_assert'
do { \
^
drivers/hwtracing/stm/core.c:637:23: note: Dereference of null pointer
get_task_comm(comm, current);
^
arch/s390/include/asm/current.h:17:45: note: expanded from macro 'current'
#define current ((struct task_struct *const)S390_lowcore.current_task)
^
arch/s390/include/asm/lowcore.h:215:22: note: expanded from macro 'S390_lowcore'
#define S390_lowcore (*((struct lowcore *) 0))
^
include/linux/sched.h:1990:36: note: expanded from macro 'get_task_comm'
__get_task_comm(buf, sizeof(buf), tsk); \
^~~
Suppressed 9 warnings (9 in non-user code).
Use -header-filter=.* to display errors from all non-system headers. Use -system-headers to display errors from system headers as well.
9 warnings generated.
Suppressed 9 warnings (9 in non-user code).
Use -header-filter=.* to display errors from all non-system headers. Use -system-headers to display errors from system headers as well.
21 warnings generated.
Suppressed 21 warnings (9 in non-user code, 12 with check filters).
Use -header-filter=.* to display errors from all non-system headers. Use -system-headers to display errors from system headers as well.
21 warnings generated.
Suppressed 21 warnings (9 in non-user code, 12 with check filters).
Use -header-filter=.* to display errors from all non-system headers. Use -system-headers to display errors from system headers as well.
21 warnings generated.
Suppressed 21 warnings (9 in non-user code, 12 with check filters).
Use -header-filter=.* to display errors from all non-system headers. Use -system-headers to display errors from system headers as well.
9 warnings generated.
Suppressed 9 warnings (9 in non-user code).
Use -header-filter=.* to display errors from all non-system headers. Use -system-headers to display errors from system headers as well.
21 warnings generated.
Suppressed 21 warnings (9 in non-user code, 12 with check filters).
Use -header-filter=.* to display errors from all non-system headers. Use -system-headers to display errors from system headers as well.
22 warnings generated.
drivers/fpga/altera-pr-ip-core.c:188:2: warning: Value stored to 'val' is never read [clang-analyzer-deadcode.DeadStores]
val = readl(priv->reg_base + ALT_PR_CSR_OFST);
^
drivers/fpga/altera-pr-ip-core.c:188:2: note: Value stored to 'val' is never read
Suppressed 21 warnings (9 in non-user code, 12 with check filters).
Use -header-filter=.* to display errors from all non-system headers. Use -system-headers to display errors from system headers as well.
23 warnings generated.
drivers/fpga/altera-freeze-bridge.c:69:4: warning: Value stored to 'ctrl' is never read [clang-analyzer-deadcode.DeadStores]
ctrl = readl(priv->base_addr + FREEZE_CSR_CTRL_OFFSET);
^
drivers/fpga/altera-freeze-bridge.c:69:4: note: Value stored to 'ctrl' is never read
drivers/fpga/altera-freeze-bridge.c:150:2: warning: Value stored to 'status' is never read [clang-analyzer-deadcode.DeadStores]
status = readl(priv->base_addr + FREEZE_CSR_STATUS_OFFSET);
^
drivers/fpga/altera-freeze-bridge.c:150:2: note: Value stored to 'status' is never read
Suppressed 21 warnings (9 in non-user code, 12 with check filters).
Use -header-filter=.* to display errors from all non-system headers. Use -system-headers to display errors from system headers as well.
9 warnings generated.
Suppressed 9 warnings (9 in non-user code).
Use -header-filter=.* to display errors from all non-system headers. Use -system-headers to display errors from system headers as well.
10 warnings generated.
>> drivers/fpga/tests/fake-fpga-region.c:146:2: warning: Undefined or garbage value returned to caller [clang-analyzer-core.uninitialized.UndefReturn]
return ret;
^ ~~~
drivers/fpga/tests/fake-fpga-region.c:133:2: note: 'ret' declared without an initial value
int ret;
^~~~~~~
drivers/fpga/tests/fake-fpga-region.c:137:2: note: Loop condition is false. Execution continues on line 146
list_for_each_entry_safe(bridge, tmp, &priv->bridge_list, node) {
^
include/linux/list.h:776:2: note: expanded from macro 'list_for_each_entry_safe'
for (pos = list_first_entry(head, typeof(*pos), member), \
^
drivers/fpga/tests/fake-fpga-region.c:146:2: note: Undefined or garbage value returned to caller
return ret;
^ ~~~
Suppressed 9 warnings (9 in non-user code).
Use -header-filter=.* to display errors from all non-system headers. Use -system-headers to display errors from system headers as well.
23 warnings generated.
Suppressed 23 warnings (11 in non-user code, 12 with check filters).
Use -header-filter=.* to display errors from all non-system headers. Use -system-headers to display errors from system headers as well.
23 warnings generated.
Suppressed 23 warnings (11 in non-user code, 12 with check filters).
Use -header-filter=.* to display errors from all non-system headers. Use -system-headers to display errors from system headers as well.
21 warnings generated.
Suppressed 21 warnings (9 in non-user code, 12 with check filters).
Use -header-filter=.* to display errors from all non-system headers. Use -system-headers to display errors from system headers as well.
10 warnings generated.
Suppressed 10 warnings (10 in non-user code).
Use -header-filter=.* to display errors from all non-system headers. Use -system-headers to display errors from system headers as well.
10 warnings generated.
Suppressed 10 warnings (10 in non-user code).
Use -header-filter=.* to display errors from all non-system headers. Use -system-headers to display errors from system headers as well.
21 warnings generated.
Suppressed 21 warnings (9 in non-user code, 12 with check filters).
Use -header-filter=.* to display errors from all non-system headers. Use -system-headers to display errors from system headers as well.
22 warnings generated.
Suppressed 22 warnings (10 in non-user code, 12 with check filters).
Use -header-filter=.* to display errors from all non-system headers. Use -system-headers to display errors from system headers as well.
10 warnings generated.
Suppressed 10 warnings (10 in non-user code).
Use -header-filter=.* to display errors from all non-system headers. Use -system-headers to display errors from system headers as well.
10 warnings generated.
Suppressed 10 warnings (10 in non-user code).
Use -header-filter=.* to display errors from all non-system headers. Use -system-headers to display errors from system headers as well.
10 warnings generated.
Suppressed 10 warnings (10 in non-user code).
Use -header-filter=.* to display errors from all non-system headers. Use -system-headers to display errors from system headers as well.
22 warnings generated.
Suppressed 22 warnings (10 in non-user code, 12 with check filters).
Use -header-filter=.* to display errors from all non-system headers. Use -system-headers to display errors from system headers as well.
22 warnings generated.
Suppressed 22 warnings (10 in non-user code, 12 with check filters).
Use -header-filter=.* to display errors from all non-system headers. Use -system-headers to display errors from system headers as well.
22 warnings generated.
Suppressed 22 warnings (10 in non-user code, 12 with check filters).
Use -header-filter=.* to display errors from all non-system headers. Use -system-headers to display errors from system headers as well.
23 warnings generated.
drivers/iio/light/ltr501.c:139:8: warning: Excessive padding in 'struct ltr501_chip_info' (16 padding bytes, where 0 is optimal). Optimal fields order: als_gain, ps_gain, channels, info, info_no_irq, als_gain_tbl_size, ps_gain_tbl_size, no_channels, partid, als_mode_active, als_gain_mask, als_gain_shift, consider reordering the fields or adding explicit padding members [clang-analyzer-optin.performance.Padding]
struct ltr501_chip_info {
~~~~~~~^~~~~~~~~~~~~~~~~~
drivers/iio/light/ltr501.c:139:8: note: Excessive padding in 'struct ltr501_chip_info' (16 padding bytes, where 0 is optimal). Optimal fields order: als_gain, ps_gain, channels, info, info_no_irq, als_gain_tbl_size, ps_gain_tbl_size, no_channels, partid, als_mode_active, als_gain_mask, als_gain_shift, consider reordering the fields or adding explicit padding members
struct ltr501_chip_info {
~~~~~~~^~~~~~~~~~~~~~~~~~
Suppressed 22 warnings (10 in non-user code, 12 with check filters).
Use -header-filter=.* to display errors from all non-system headers. Use -system-headers to display errors from system headers as well.
22 warnings generated.
drivers/parport/share.c:1124:23: warning: Dereference of null pointer [clang-analyzer-core.NullDereference]
if (signal_pending(current))
^
arch/s390/include/asm/current.h:17:45: note: expanded from macro 'current'
#define current ((struct task_struct *const)S390_lowcore.current_task)
^~~~~~~~~~~~~~~~~~~~~~~~~
arch/s390/include/asm/lowcore.h:215:22: note: expanded from macro 'S390_lowcore'
#define S390_lowcore (*((struct lowcore *) 0))
^
drivers/parport/share.c:1103:6: note: Assuming the condition is true
if (r == -EAGAIN) {
^~~~~~~~~~~~
drivers/parport/share.c:1103:2: note: Taking true branch
if (r == -EAGAIN) {
^
drivers/parport/share.c:1121:7: note: Assuming field 'waiting' is not equal to 0
if (dev->waiting) {
^~~~~~~~~~~~
drivers/parport/share.c:1121:3: note: Taking true branch
if (dev->waiting) {
^
drivers/parport/share.c:1122:4: note: Loop condition is false. Exiting loop
wait_event_interruptible(dev->wait_q,
^
include/linux/wait.h:499:2: note: expanded from macro 'wait_event_interruptible'
might_sleep(); \
^
include/linux/kernel.h:143:42: note: expanded from macro 'might_sleep'
do { __might_sleep(__FILE__, __LINE__); might_resched(); } while (0)
^
include/linux/kernel.h:120:26: note: expanded from macro 'might_resched'
# define might_resched() do { } while (0)
^
drivers/parport/share.c:1122:4: note: Loop condition is false. Exiting loop
wait_event_interruptible(dev->wait_q,
vim +146 drivers/fpga/tests/fake-fpga-region.c
318b50638db45d Marco Pagani 2023-03-10 128
318b50638db45d Marco Pagani 2023-03-10 129 static int fake_region_get_bridges(struct fpga_region *region)
318b50638db45d Marco Pagani 2023-03-10 130 {
318b50638db45d Marco Pagani 2023-03-10 131 struct fake_region_priv *priv;
318b50638db45d Marco Pagani 2023-03-10 132 struct fpga_bridge *bridge, *tmp;
318b50638db45d Marco Pagani 2023-03-10 133 int ret;
318b50638db45d Marco Pagani 2023-03-10 134
318b50638db45d Marco Pagani 2023-03-10 135 priv = region->priv;
318b50638db45d Marco Pagani 2023-03-10 136
318b50638db45d Marco Pagani 2023-03-10 137 list_for_each_entry_safe(bridge, tmp, &priv->bridge_list, node) {
318b50638db45d Marco Pagani 2023-03-10 138 list_del(&bridge->node);
318b50638db45d Marco Pagani 2023-03-10 139 ret = fpga_bridge_get_to_list(bridge->dev.parent,
318b50638db45d Marco Pagani 2023-03-10 140 region->info,
318b50638db45d Marco Pagani 2023-03-10 141 ®ion->bridge_list);
318b50638db45d Marco Pagani 2023-03-10 142 if (ret)
318b50638db45d Marco Pagani 2023-03-10 143 break;
318b50638db45d Marco Pagani 2023-03-10 144 }
318b50638db45d Marco Pagani 2023-03-10 145
318b50638db45d Marco Pagani 2023-03-10 @146 return ret;
318b50638db45d Marco Pagani 2023-03-10 147 }
318b50638db45d Marco Pagani 2023-03-10 148
--
0-DAY CI Kernel Test Service
https://github.com/intel/lkp-tests
^ permalink raw reply [flat|nested] 3+ messages in thread
* Re: [RFC PATCH v2 4/4] fpga: add initial KUnit test suites
2023-03-10 17:04 ` [RFC PATCH v2 4/4] fpga: add initial KUnit test suites Marco Pagani
@ 2023-03-11 9:58 ` kernel test robot
0 siblings, 0 replies; 3+ messages in thread
From: kernel test robot @ 2023-03-11 9:58 UTC (permalink / raw)
To: Marco Pagani; +Cc: llvm, oe-kbuild-all
Hi Marco,
[FYI, it's a private test report for your RFC patch.]
[auto build test WARNING on linus/master]
[also build test WARNING on v6.3-rc1 next-20230310]
[If your patch is applied to the wrong git tree, kindly drop us a note.
And when submitting patch, we suggest to use '--base' as documented in
https://git-scm.com/docs/git-format-patch#_base_tree_information]
url: https://github.com/intel-lab-lkp/linux/commits/Marco-Pagani/fpga-add-fake-FPGA-manager/20230311-010757
patch link: https://lore.kernel.org/r/20230310170412.708363-5-marpagan%40redhat.com
patch subject: [RFC PATCH v2 4/4] fpga: add initial KUnit test suites
config: x86_64-randconfig-a014 (https://download.01.org/0day-ci/archive/20230311/202303111722.dBMPUXdj-lkp@intel.com/config)
compiler: clang version 14.0.6 (https://github.com/llvm/llvm-project f28c006a5895fc0e329fe15fead81e37457cb1d1)
reproduce (this is a W=1 build):
wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross
chmod +x ~/bin/make.cross
# https://github.com/intel-lab-lkp/linux/commit/6af16afaf84ee6f061e6953eebca1a786c5be576
git remote add linux-review https://github.com/intel-lab-lkp/linux
git fetch --no-tags linux-review Marco-Pagani/fpga-add-fake-FPGA-manager/20230311-010757
git checkout 6af16afaf84ee6f061e6953eebca1a786c5be576
# save the config file
mkdir build_dir && cp config build_dir/.config
COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross W=1 O=build_dir ARCH=x86_64 olddefconfig
COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross W=1 O=build_dir ARCH=x86_64 SHELL=/bin/bash
If you fix the issue, kindly add following tag where applicable
| Reported-by: kernel test robot <lkp@intel.com>
| Link: https://lore.kernel.org/oe-kbuild-all/202303111722.dBMPUXdj-lkp@intel.com/
All warnings (new ones prefixed by >>):
drivers/clk/.kunitconfig: warning: ignored by one of the .gitignore files
>> drivers/fpga/tests/.kunitconfig: warning: ignored by one of the .gitignore files
drivers/gpu/drm/tests/.kunitconfig: warning: ignored by one of the .gitignore files
drivers/gpu/drm/vc4/tests/.kunitconfig: warning: ignored by one of the .gitignore files
drivers/hid/.kunitconfig: warning: ignored by one of the .gitignore files
fs/ext4/.kunitconfig: warning: ignored by one of the .gitignore files
fs/fat/.kunitconfig: warning: ignored by one of the .gitignore files
kernel/kcsan/.kunitconfig: warning: ignored by one of the .gitignore files
lib/kunit/.kunitconfig: warning: ignored by one of the .gitignore files
mm/kfence/.kunitconfig: warning: ignored by one of the .gitignore files
net/sunrpc/.kunitconfig: warning: ignored by one of the .gitignore files
tools/testing/selftests/arm64/tags/.gitignore: warning: ignored by one of the .gitignore files
tools/testing/selftests/arm64/tags/Makefile: warning: ignored by one of the .gitignore files
tools/testing/selftests/arm64/tags/run_tags_test.sh: warning: ignored by one of the .gitignore files
tools/testing/selftests/arm64/tags/tags_test.c: warning: ignored by one of the .gitignore files
tools/testing/selftests/kvm/.gitignore: warning: ignored by one of the .gitignore files
tools/testing/selftests/kvm/Makefile: warning: ignored by one of the .gitignore files
tools/testing/selftests/kvm/config: warning: ignored by one of the .gitignore files
tools/testing/selftests/kvm/settings: warning: ignored by one of the .gitignore files
--
0-DAY CI Kernel Test Service
https://github.com/intel/lkp-tests
^ permalink raw reply [flat|nested] 3+ messages in thread
* [RFC PATCH v2 4/4] fpga: add initial KUnit test suites
2023-03-10 17:04 [RFC PATCH v2 0/4] fpga: add initial KUnit tests for the subsystem Marco Pagani
@ 2023-03-10 17:04 ` Marco Pagani
2023-03-11 9:58 ` kernel test robot
0 siblings, 1 reply; 3+ messages in thread
From: Marco Pagani @ 2023-03-10 17:04 UTC (permalink / raw)
To: Moritz Fischer, Wu Hao, Xu Yilun, Tom Rix
Cc: Marco Pagani, linux-kernel, linux-fpga
Introduce initial KUnit tests for the FPGA subsystem. Tests are
organized into three test suites. The first suite tests the FPGA
Manager. The second suite tests the FPGA Bridge. Finally, the last
test suite models a complete FPGA platform and tests static and
partial reconfiguration.
Signed-off-by: Marco Pagani <marpagan@redhat.com>
---
drivers/fpga/Kconfig | 2 +
drivers/fpga/Makefile | 3 +
drivers/fpga/tests/.kunitconfig | 5 +
drivers/fpga/tests/Kconfig | 11 +
drivers/fpga/tests/Makefile | 6 +
drivers/fpga/tests/fpga-test.c | 501 ++++++++++++++++++++++++++++++++
6 files changed, 528 insertions(+)
create mode 100644 drivers/fpga/tests/.kunitconfig
create mode 100644 drivers/fpga/tests/Kconfig
create mode 100644 drivers/fpga/tests/Makefile
create mode 100644 drivers/fpga/tests/fpga-test.c
diff --git a/drivers/fpga/Kconfig b/drivers/fpga/Kconfig
index 6ce143dafd04..469d5bdd1a05 100644
--- a/drivers/fpga/Kconfig
+++ b/drivers/fpga/Kconfig
@@ -276,4 +276,6 @@ config FPGA_MGR_LATTICE_SYSCONFIG_SPI
FPGA manager driver support for Lattice FPGAs programming over slave
SPI sysCONFIG interface.
+source "drivers/fpga/tests/Kconfig"
+
endif # FPGA
diff --git a/drivers/fpga/Makefile b/drivers/fpga/Makefile
index 72e554b4d2f7..352a2612623e 100644
--- a/drivers/fpga/Makefile
+++ b/drivers/fpga/Makefile
@@ -55,3 +55,6 @@ obj-$(CONFIG_FPGA_DFL_NIOS_INTEL_PAC_N3000) += dfl-n3000-nios.o
# Drivers for FPGAs which implement DFL
obj-$(CONFIG_FPGA_DFL_PCI) += dfl-pci.o
+
+# KUnit tests
+obj-$(CONFIG_FPGA_KUNIT_TESTS) += tests/
diff --git a/drivers/fpga/tests/.kunitconfig b/drivers/fpga/tests/.kunitconfig
new file mode 100644
index 000000000000..a1c2a2974c39
--- /dev/null
+++ b/drivers/fpga/tests/.kunitconfig
@@ -0,0 +1,5 @@
+CONFIG_KUNIT=y
+CONFIG_FPGA=y
+CONFIG_FPGA_REGION=y
+CONFIG_FPGA_BRIDGE=y
+CONFIG_FPGA_KUNIT_TESTS=y
diff --git a/drivers/fpga/tests/Kconfig b/drivers/fpga/tests/Kconfig
new file mode 100644
index 000000000000..1cbea75dd29b
--- /dev/null
+++ b/drivers/fpga/tests/Kconfig
@@ -0,0 +1,11 @@
+config FPGA_KUNIT_TESTS
+ tristate "KUnit test for the FPGA subsystem" if !KUNIT_ALL_TESTS
+ depends on FPGA && FPGA_REGION && FPGA_BRIDGE && KUNIT
+ default KUNIT_ALL_TESTS
+ help
+ This builds unit tests for the FPGA subsystem
+
+ For more information on KUnit and unit tests in general,
+ please refer to the KUnit documentation in Documentation/dev-tools/kunit/.
+
+ If unsure, say N.
diff --git a/drivers/fpga/tests/Makefile b/drivers/fpga/tests/Makefile
new file mode 100644
index 000000000000..0b052570659b
--- /dev/null
+++ b/drivers/fpga/tests/Makefile
@@ -0,0 +1,6 @@
+# SPDX-License-Identifier: GPL-2.0
+
+obj-$(CONFIG_FPGA_KUNIT_TESTS) += fake-fpga-mgr.o
+obj-$(CONFIG_FPGA_KUNIT_TESTS) += fake-fpga-region.o
+obj-$(CONFIG_FPGA_KUNIT_TESTS) += fake-fpga-bridge.o
+obj-$(CONFIG_FPGA_KUNIT_TESTS) += fpga-test.o
diff --git a/drivers/fpga/tests/fpga-test.c b/drivers/fpga/tests/fpga-test.c
new file mode 100644
index 000000000000..df5f48dc2c54
--- /dev/null
+++ b/drivers/fpga/tests/fpga-test.c
@@ -0,0 +1,501 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * KUnit tests for the FPGA subsystem
+ *
+ * Copyright (C) 2023 Red Hat, Inc.
+ *
+ * Author: Marco Pagani <marpagan@redhat.com>
+ */
+
+#include <kunit/test.h>
+#include <linux/list.h>
+#include <linux/platform_device.h>
+#include <linux/scatterlist.h>
+
+#include <linux/fpga/fpga-mgr.h>
+#include <linux/fpga/fpga-region.h>
+#include <linux/fpga/fpga-bridge.h>
+
+#include "fake-fpga-region.h"
+#include "fake-fpga-bridge.h"
+#include "fake-fpga-mgr.h"
+
+#define STATIC_IMG_BLOCKS 16
+#define STATIC_IMG_SIZE (FPGA_IMG_BLOCK * STATIC_IMG_BLOCKS)
+
+#define PARTIAL_IMG_BLOCKS 4
+#define PARTIAL_IMG_SIZE (FPGA_IMG_BLOCK * PARTIAL_IMG_BLOCKS)
+
+/**
+ * buf_img_alloc() - Allocate a fake FPGA image using a buffer.
+ * @test: KUnit test context object.
+ * @dev: owning device.
+ * @size: image size.
+ *
+ * Return: pointer to a struct fpga_image_info or NULL on failure.
+ */
+static struct fpga_image_info *buf_img_alloc(struct kunit *test, struct device *dev,
+ size_t size)
+{
+ struct fpga_image_info *img_info;
+ char *img_buf;
+
+ img_buf = kunit_kzalloc(test, size, GFP_KERNEL);
+ KUNIT_ASSERT_NOT_ERR_OR_NULL(test, img_buf);
+ fake_fpga_mgr_fill_header(img_buf);
+
+ img_info = fpga_image_info_alloc(dev);
+ KUNIT_ASSERT_NOT_ERR_OR_NULL(test, img_info);
+
+ img_info->count = size;
+ img_info->buf = img_buf;
+
+ kunit_info(test, "FPGA image allocated in a buffer, size: %zu\n", size);
+
+ return img_info;
+}
+
+/**
+ * sgt_img_alloc() - Allocate a fake FPGA image using a scatter gather table.
+ * @test: KUnit test context object.
+ * @dev: owning device.
+ * @size: image size.
+ *
+ * Return: pointer to a struct fpga_image_info or NULL on failure.
+ */
+static struct fpga_image_info *sgt_img_alloc(struct kunit *test, struct device *dev,
+ size_t size)
+{
+ struct fpga_image_info *img_info;
+ char *img_buf;
+ struct sg_table *sgt;
+ int ret;
+
+ img_buf = kunit_kzalloc(test, size, GFP_KERNEL);
+ KUNIT_ASSERT_NOT_ERR_OR_NULL(test, img_buf);
+ fake_fpga_mgr_fill_header(img_buf);
+
+ sgt = kunit_kzalloc(test, sizeof(*sgt), GFP_KERNEL);
+ ret = sg_alloc_table(sgt, 1, GFP_KERNEL);
+ KUNIT_ASSERT_EQ(test, ret, 0);
+ sg_init_one(sgt->sgl, img_buf, size);
+
+ img_info = fpga_image_info_alloc(dev);
+ KUNIT_ASSERT_NOT_ERR_OR_NULL(test, img_info);
+
+ img_info->sgt = sgt;
+
+ kunit_info(test, "FPGA image allocated in a scatter gather table, size: %zu\n",
+ size);
+
+ return img_info;
+}
+
+/**
+ * img_free() - Free a fake FPGA image
+ * @img_info: fpga image information struct.
+ *
+ */
+static void img_free(struct fpga_image_info *img_info)
+{
+ if (!img_info)
+ return;
+
+ if (img_info->sgt)
+ sg_free_table(img_info->sgt);
+
+ fpga_image_info_free(img_info);
+}
+
+static int fpga_mgr_test_init(struct kunit *test)
+{
+ struct fake_fpga_mgr *mgr_ctx;
+ int ret;
+
+ mgr_ctx = kunit_kzalloc(test, sizeof(*mgr_ctx), GFP_KERNEL);
+ KUNIT_ASSERT_NOT_ERR_OR_NULL(test, mgr_ctx);
+
+ ret = fake_fpga_mgr_register(mgr_ctx, test);
+ KUNIT_ASSERT_EQ(test, ret, 0);
+
+ test->priv = mgr_ctx;
+
+ return 0;
+}
+
+static void fpga_mgr_test_img_load_buf(struct kunit *test)
+{
+ struct fake_fpga_mgr *mgr_ctx;
+ struct fpga_image_info *img_info;
+ int ret;
+
+ mgr_ctx = test->priv;
+
+ /* Allocate an FPGA image using a buffer */
+ img_info = buf_img_alloc(test, &mgr_ctx->pdev->dev, STATIC_IMG_SIZE);
+ KUNIT_ASSERT_NOT_ERR_OR_NULL(test, img_info);
+
+ KUNIT_EXPECT_EQ(test, 0, fake_fpga_mgr_get_rcfg_count(mgr_ctx));
+
+ ret = fpga_mgr_load(mgr_ctx->mgr, img_info);
+ KUNIT_ASSERT_EQ(test, ret, 0);
+
+ fake_fpga_mgr_check_write_buf(mgr_ctx);
+
+ KUNIT_EXPECT_EQ(test, 1, fake_fpga_mgr_get_rcfg_count(mgr_ctx));
+
+ img_free(img_info);
+}
+
+static void fpga_mgr_test_img_load_sgt(struct kunit *test)
+{
+ struct fake_fpga_mgr *mgr_ctx;
+ struct fpga_image_info *img_info;
+ int ret;
+
+ mgr_ctx = test->priv;
+
+ /* Allocate an FPGA image using a scatter gather table */
+ img_info = sgt_img_alloc(test, &mgr_ctx->pdev->dev, STATIC_IMG_SIZE);
+ KUNIT_ASSERT_NOT_ERR_OR_NULL(test, img_info);
+
+ KUNIT_EXPECT_EQ(test, 0, fake_fpga_mgr_get_rcfg_count(mgr_ctx));
+
+ ret = fpga_mgr_load(mgr_ctx->mgr, img_info);
+ KUNIT_ASSERT_EQ(test, ret, 0);
+
+ fake_fpga_mgr_check_write_sgt(mgr_ctx);
+
+ KUNIT_EXPECT_EQ(test, 1, fake_fpga_mgr_get_rcfg_count(mgr_ctx));
+
+ img_free(img_info);
+}
+
+static void fpga_mgr_test_exit(struct kunit *test)
+{
+ struct fake_fpga_mgr *mgr_ctx;
+
+ mgr_ctx = test->priv;
+
+ if (mgr_ctx)
+ fake_fpga_mgr_unregister(mgr_ctx);
+}
+
+static struct kunit_case fpga_mgr_test_cases[] = {
+ KUNIT_CASE(fpga_mgr_test_img_load_buf),
+ KUNIT_CASE(fpga_mgr_test_img_load_sgt),
+ {}
+};
+
+static struct kunit_suite fpga_mgr_suite = {
+ .name = "fpga_mgr",
+ .init = fpga_mgr_test_init,
+ .exit = fpga_mgr_test_exit,
+ .test_cases = fpga_mgr_test_cases,
+};
+
+static int fpga_bridge_test_init(struct kunit *test)
+{
+ struct fake_fpga_bridge *bridge_ctx;
+ int ret;
+
+ bridge_ctx = kunit_kzalloc(test, sizeof(*bridge_ctx), GFP_KERNEL);
+ KUNIT_ASSERT_NOT_ERR_OR_NULL(test, bridge_ctx);
+
+ ret = fake_fpga_bridge_register(bridge_ctx, NULL, test);
+ KUNIT_ASSERT_EQ(test, ret, 0);
+
+ test->priv = bridge_ctx;
+
+ return 0;
+}
+
+static void fpga_bridge_test_exit(struct kunit *test)
+{
+ struct fake_fpga_bridge *bridge_ctx;
+
+ bridge_ctx = test->priv;
+
+ if (bridge_ctx)
+ fake_fpga_bridge_unregister(bridge_ctx);
+}
+
+static void fpga_bridge_test_toggle(struct kunit *test)
+{
+ struct fake_fpga_bridge *bridge_ctx;
+
+ bridge_ctx = test->priv;
+
+ KUNIT_EXPECT_EQ(test, 1, fake_fpga_bridge_get_state(bridge_ctx));
+
+ fpga_bridge_disable(bridge_ctx->bridge);
+ KUNIT_EXPECT_EQ(test, 0, fake_fpga_bridge_get_state(bridge_ctx));
+
+ fpga_bridge_enable(bridge_ctx->bridge);
+ KUNIT_EXPECT_EQ(test, 1, fake_fpga_bridge_get_state(bridge_ctx));
+}
+
+static void fpga_bridge_test_get_put_list(struct kunit *test)
+{
+ struct list_head bridge_list;
+ struct fake_fpga_bridge *bridge_0_ctx, *bridge_1_ctx;
+ int ret;
+
+ bridge_0_ctx = test->priv;
+
+ /* Register another bridge for this test */
+ bridge_1_ctx = kunit_kzalloc(test, sizeof(*bridge_1_ctx), GFP_KERNEL);
+ KUNIT_ASSERT_NOT_ERR_OR_NULL(test, bridge_1_ctx);
+
+ ret = fake_fpga_bridge_register(bridge_1_ctx, NULL, test);
+ KUNIT_ASSERT_EQ(test, ret, 0);
+
+ INIT_LIST_HEAD(&bridge_list);
+
+ /* Get bridge_0 and add it to the list */
+ ret = fpga_bridge_get_to_list(bridge_1_ctx->bridge->dev.parent, NULL,
+ &bridge_list);
+ KUNIT_EXPECT_EQ(test, ret, 0);
+
+ KUNIT_EXPECT_PTR_EQ(test, bridge_1_ctx->bridge,
+ list_first_entry_or_null(&bridge_list, struct fpga_bridge, node));
+
+ /* Get bridge_1 and add it to the list */
+ ret = fpga_bridge_get_to_list(bridge_0_ctx->bridge->dev.parent, NULL,
+ &bridge_list);
+ KUNIT_EXPECT_EQ(test, ret, 0);
+
+ KUNIT_EXPECT_PTR_EQ(test, bridge_0_ctx->bridge,
+ list_first_entry_or_null(&bridge_list, struct fpga_bridge, node));
+
+ /* Put and remove both bridges from the list */
+ fpga_bridges_put(&bridge_list);
+
+ KUNIT_EXPECT_TRUE(test, list_empty(&bridge_list));
+
+ fake_fpga_bridge_unregister(bridge_1_ctx);
+}
+
+static struct kunit_case fpga_bridge_test_cases[] = {
+ KUNIT_CASE(fpga_bridge_test_toggle),
+ KUNIT_CASE(fpga_bridge_test_get_put_list),
+ {}
+};
+
+static struct kunit_suite fpga_bridge_suite = {
+ .name = "fpga_bridge",
+ .init = fpga_bridge_test_init,
+ .exit = fpga_bridge_test_exit,
+ .test_cases = fpga_bridge_test_cases,
+};
+
+struct fpga_base_ctx {
+ /*
+ * Base FPGA layout consisting of a single region
+ * controlled by a bridge and the FPGA manager
+ */
+ struct fake_fpga_mgr *mgr_ctx;
+ struct fake_fpga_bridge *bridge_ctx;
+ struct fake_fpga_region *region_ctx;
+};
+
+static int fpga_test_init(struct kunit *test)
+{
+ struct fpga_base_ctx *base_ctx;
+ int ret;
+
+ base_ctx = kunit_kzalloc(test, sizeof(*base_ctx), GFP_KERNEL);
+ KUNIT_ASSERT_NOT_ERR_OR_NULL(test, base_ctx);
+ test->priv = base_ctx;
+
+ /* Build the base FPGA layout */
+ base_ctx->mgr_ctx = kunit_kzalloc(test, sizeof(*base_ctx->mgr_ctx), GFP_KERNEL);
+ KUNIT_ASSERT_NOT_ERR_OR_NULL(test, base_ctx->mgr_ctx);
+ ret = fake_fpga_mgr_register(base_ctx->mgr_ctx, test);
+ KUNIT_ASSERT_EQ(test, ret, 0);
+
+ base_ctx->bridge_ctx = kunit_kzalloc(test, sizeof(*base_ctx->bridge_ctx), GFP_KERNEL);
+ KUNIT_ASSERT_NOT_ERR_OR_NULL(test, base_ctx->bridge_ctx);
+ ret = fake_fpga_bridge_register(base_ctx->bridge_ctx, NULL, test);
+ KUNIT_ASSERT_EQ(test, ret, 0);
+
+ /* The base region a child of the base bridge */
+ base_ctx->region_ctx = kunit_kzalloc(test, sizeof(*base_ctx->region_ctx), GFP_KERNEL);
+ KUNIT_ASSERT_NOT_ERR_OR_NULL(test, base_ctx->region_ctx);
+ ret = fake_fpga_region_register(base_ctx->region_ctx, base_ctx->mgr_ctx->mgr,
+ &base_ctx->bridge_ctx->bridge->dev, test);
+ KUNIT_ASSERT_EQ(test, ret, 0);
+
+ fake_fpga_region_add_bridge(base_ctx->region_ctx, base_ctx->bridge_ctx->bridge);
+
+ kunit_info(test, "FPGA base system built\n");
+
+ KUNIT_EXPECT_EQ(test, 0, fake_fpga_mgr_get_rcfg_count(base_ctx->mgr_ctx));
+ KUNIT_EXPECT_EQ(test, 1, fake_fpga_bridge_get_state(base_ctx->bridge_ctx));
+ KUNIT_EXPECT_EQ(test, 0, fake_fpga_bridge_get_cycles_count(base_ctx->bridge_ctx));
+
+ return 0;
+}
+
+static void fpga_test_exit(struct kunit *test)
+{
+ struct fpga_base_ctx *base_ctx;
+
+ base_ctx = test->priv;
+
+ if (!base_ctx)
+ return;
+
+ if (base_ctx->region_ctx)
+ fake_fpga_region_unregister(base_ctx->region_ctx);
+
+ if (base_ctx->bridge_ctx)
+ fake_fpga_bridge_unregister(base_ctx->bridge_ctx);
+
+ if (base_ctx->mgr_ctx)
+ fake_fpga_mgr_unregister(base_ctx->mgr_ctx);
+}
+
+static void fpga_test_static_cfg(struct kunit *test)
+{
+ struct fpga_base_ctx *base_ctx;
+ struct fpga_image_info *buf_img_info;
+ struct fpga_image_info *sgt_img_info;
+ int ret;
+
+ base_ctx = test->priv;
+
+ buf_img_info = buf_img_alloc(test, &base_ctx->mgr_ctx->pdev->dev, STATIC_IMG_SIZE);
+ KUNIT_ASSERT_NOT_ERR_OR_NULL(test, buf_img_info);
+
+ /* Configure the FPGA using the image in a buffer */
+ base_ctx->region_ctx->region->info = buf_img_info;
+ ret = fpga_region_program_fpga(base_ctx->region_ctx->region);
+ KUNIT_ASSERT_EQ(test, ret, 0);
+
+ fake_fpga_mgr_check_write_buf(base_ctx->mgr_ctx);
+
+ KUNIT_EXPECT_EQ(test, 1, fake_fpga_mgr_get_rcfg_count(base_ctx->mgr_ctx));
+ KUNIT_EXPECT_EQ(test, 1, fake_fpga_bridge_get_state(base_ctx->bridge_ctx));
+ KUNIT_EXPECT_EQ(test, 1, fake_fpga_bridge_get_cycles_count(base_ctx->bridge_ctx));
+
+ kunit_info(test, "FPGA configuration completed using a buffer image\n");
+
+ sgt_img_info = sgt_img_alloc(test, &base_ctx->mgr_ctx->pdev->dev, STATIC_IMG_SIZE);
+ KUNIT_ASSERT_NOT_ERR_OR_NULL(test, sgt_img_info);
+
+ /* Re-configure the FPGA using the image in a scatter list */
+ base_ctx->region_ctx->region->info = sgt_img_info;
+ ret = fpga_region_program_fpga(base_ctx->region_ctx->region);
+ KUNIT_ASSERT_EQ(test, ret, 0);
+
+ fake_fpga_mgr_check_write_sgt(base_ctx->mgr_ctx);
+
+ KUNIT_EXPECT_EQ(test, 2, fake_fpga_mgr_get_rcfg_count(base_ctx->mgr_ctx));
+ KUNIT_EXPECT_EQ(test, 1, fake_fpga_bridge_get_state(base_ctx->bridge_ctx));
+ KUNIT_EXPECT_EQ(test, 2, fake_fpga_bridge_get_cycles_count(base_ctx->bridge_ctx));
+
+ kunit_info(test, "FPGA configuration completed using scatter gather table image\n");
+
+ img_free(sgt_img_info);
+}
+
+static void fpga_test_partial_rcfg(struct kunit *test)
+{
+ struct fpga_base_ctx *base_ctx;
+ struct fake_fpga_region *sub_region_0_ctx, *sub_region_1_ctx;
+ struct fake_fpga_bridge *sub_bridge_0_ctx, *sub_bridge_1_ctx;
+ struct fpga_image_info *partial_img_info;
+ int ret;
+
+ base_ctx = test->priv;
+
+ /*
+ * Add two reconfigurable sub-regions, each controlled by a bridge. The
+ * reconfigurable sub-region are children of their bridges which are,
+ * in turn, children of the base region. For simplicity, the same image
+ * is used to configure reconfigurable regions
+ */
+ sub_bridge_0_ctx = kunit_kzalloc(test, sizeof(*sub_bridge_0_ctx), GFP_KERNEL);
+ KUNIT_ASSERT_NOT_ERR_OR_NULL(test, sub_bridge_0_ctx);
+ ret = fake_fpga_bridge_register(sub_bridge_0_ctx,
+ &base_ctx->region_ctx->region->dev, test);
+ KUNIT_ASSERT_EQ(test, ret, 0);
+
+ sub_region_0_ctx = kunit_kzalloc(test, sizeof(*sub_region_0_ctx), GFP_KERNEL);
+ KUNIT_ASSERT_NOT_ERR_OR_NULL(test, sub_region_0_ctx);
+ ret = fake_fpga_region_register(sub_region_0_ctx, base_ctx->mgr_ctx->mgr,
+ &sub_bridge_0_ctx->bridge->dev, test);
+ KUNIT_ASSERT_EQ(test, ret, 0);
+
+ fake_fpga_region_add_bridge(sub_region_0_ctx, sub_bridge_0_ctx->bridge);
+
+ sub_bridge_1_ctx = kunit_kzalloc(test, sizeof(*sub_bridge_1_ctx), GFP_KERNEL);
+ KUNIT_ASSERT_NOT_ERR_OR_NULL(test, sub_bridge_1_ctx);
+ ret = fake_fpga_bridge_register(sub_bridge_1_ctx,
+ &base_ctx->region_ctx->region->dev, test);
+ KUNIT_ASSERT_EQ(test, ret, 0);
+
+ sub_region_1_ctx = kunit_kzalloc(test, sizeof(*sub_region_1_ctx), GFP_KERNEL);
+ KUNIT_ASSERT_NOT_ERR_OR_NULL(test, sub_region_1_ctx);
+ ret = fake_fpga_region_register(sub_region_1_ctx, base_ctx->mgr_ctx->mgr,
+ &sub_bridge_1_ctx->bridge->dev, test);
+ KUNIT_ASSERT_EQ(test, ret, 0);
+
+ fake_fpga_region_add_bridge(sub_region_1_ctx, sub_bridge_1_ctx->bridge);
+
+ /* Allocate a partial image using a buffer */
+ partial_img_info = buf_img_alloc(test, &base_ctx->mgr_ctx->pdev->dev,
+ PARTIAL_IMG_SIZE);
+ KUNIT_ASSERT_NOT_ERR_OR_NULL(test, partial_img_info);
+ partial_img_info->flags = FPGA_MGR_PARTIAL_RECONFIG;
+
+ /* Re-configure sub-region 0 with the partial image */
+ sub_region_0_ctx->region->info = partial_img_info;
+ ret = fpga_region_program_fpga(sub_region_0_ctx->region);
+ KUNIT_ASSERT_EQ(test, ret, 0);
+
+ fake_fpga_mgr_check_write_buf(base_ctx->mgr_ctx);
+ KUNIT_EXPECT_EQ(test, 1, fake_fpga_mgr_get_rcfg_count(base_ctx->mgr_ctx));
+
+ KUNIT_EXPECT_EQ(test, 1, fake_fpga_bridge_get_state(sub_bridge_0_ctx));
+ KUNIT_EXPECT_EQ(test, 1, fake_fpga_bridge_get_cycles_count(sub_bridge_0_ctx));
+
+ /* Re-configure sub-region 1 with the partial image */
+ sub_region_1_ctx->region->info = partial_img_info;
+ ret = fpga_region_program_fpga(sub_region_1_ctx->region);
+ KUNIT_ASSERT_EQ(test, ret, 0);
+
+ fake_fpga_mgr_check_write_buf(base_ctx->mgr_ctx);
+ KUNIT_EXPECT_EQ(test, 2, fake_fpga_mgr_get_rcfg_count(base_ctx->mgr_ctx));
+
+ KUNIT_EXPECT_EQ(test, 1, fake_fpga_bridge_get_state(sub_bridge_1_ctx));
+ KUNIT_EXPECT_EQ(test, 1, fake_fpga_bridge_get_cycles_count(sub_bridge_1_ctx));
+
+ /* Check that the base bridge has not been disabled during reconfiguration */
+ KUNIT_EXPECT_EQ(test, 1, fake_fpga_bridge_get_state(base_ctx->bridge_ctx));
+ KUNIT_EXPECT_EQ(test, 0, fake_fpga_bridge_get_cycles_count(base_ctx->bridge_ctx));
+
+ img_free(partial_img_info);
+ fake_fpga_region_unregister(sub_region_0_ctx);
+ fake_fpga_bridge_unregister(sub_bridge_0_ctx);
+ fake_fpga_region_unregister(sub_region_1_ctx);
+ fake_fpga_bridge_unregister(sub_bridge_1_ctx);
+}
+
+static struct kunit_case fpga_test_cases[] = {
+ KUNIT_CASE(fpga_test_static_cfg),
+ KUNIT_CASE(fpga_test_partial_rcfg),
+ {}
+};
+
+static struct kunit_suite fpga_suite = {
+ .name = "fpga",
+ .init = fpga_test_init,
+ .exit = fpga_test_exit,
+ .test_cases = fpga_test_cases,
+};
+
+kunit_test_suites(&fpga_mgr_suite, &fpga_bridge_suite, &fpga_suite);
+
+MODULE_LICENSE("GPL v2");
--
2.39.2
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2023-03-18 9:02 [RFC PATCH v2 4/4] fpga: add initial KUnit test suites kernel test robot
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2023-03-10 17:04 [RFC PATCH v2 0/4] fpga: add initial KUnit tests for the subsystem Marco Pagani
2023-03-10 17:04 ` [RFC PATCH v2 4/4] fpga: add initial KUnit test suites Marco Pagani
2023-03-11 9:58 ` kernel test robot
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