* drivers/irqchip/irq-gic-v5-its.c:854:13: sparse: sparse: restricted __le64 degrades to integer
@ 2025-12-13 10:56 kernel test robot
2025-12-19 10:35 ` Lorenzo Pieralisi
0 siblings, 1 reply; 2+ messages in thread
From: kernel test robot @ 2025-12-13 10:56 UTC (permalink / raw)
To: Lorenzo Pieralisi; +Cc: oe-kbuild-all, linux-kernel, Marc Zyngier
Hi Lorenzo,
First bad commit (maybe != root cause):
tree: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master
head: a859eca0e4cc96f63ff125dbe5388d961558b0e9
commit: 53bb952a625fd3247647c7a28366ce990a579415 arm64: Kconfig: Enable GICv5
date: 5 months ago
config: arm64-randconfig-r113-20251213 (https://download.01.org/0day-ci/archive/20251213/202512131849.30ZRTBeR-lkp@intel.com/config)
compiler: aarch64-linux-gcc (GCC) 12.5.0
reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20251213/202512131849.30ZRTBeR-lkp@intel.com/reproduce)
If you fix the issue in a separate patch/commit (i.e. not just a new version of
the same patch/commit), kindly add following tags
| Reported-by: kernel test robot <lkp@intel.com>
| Closes: https://lore.kernel.org/oe-kbuild-all/202512131849.30ZRTBeR-lkp@intel.com/
sparse warnings: (new ones prefixed by >>)
drivers/irqchip/irq-gic-v5-its.c:854:13: sparse: sparse: cast to restricted __le64
>> drivers/irqchip/irq-gic-v5-its.c:854:13: sparse: sparse: restricted __le64 degrades to integer
>> drivers/irqchip/irq-gic-v5-its.c:854:13: sparse: sparse: restricted __le64 degrades to integer
vim +854 drivers/irqchip/irq-gic-v5-its.c
57d72196dfc850 Lorenzo Pieralisi 2025-07-03 845
57d72196dfc850 Lorenzo Pieralisi 2025-07-03 846 static int gicv5_its_map_event(struct gicv5_its_dev *its_dev, u16 event_id, u32 lpi)
57d72196dfc850 Lorenzo Pieralisi 2025-07-03 847 {
57d72196dfc850 Lorenzo Pieralisi 2025-07-03 848 struct gicv5_its_chip_data *its = its_dev->its_node;
57d72196dfc850 Lorenzo Pieralisi 2025-07-03 849 u64 itt_entry;
57d72196dfc850 Lorenzo Pieralisi 2025-07-03 850 __le64 *itte;
57d72196dfc850 Lorenzo Pieralisi 2025-07-03 851
57d72196dfc850 Lorenzo Pieralisi 2025-07-03 852 itte = gicv5_its_device_get_itte_ref(its_dev, event_id);
57d72196dfc850 Lorenzo Pieralisi 2025-07-03 853
57d72196dfc850 Lorenzo Pieralisi 2025-07-03 @854 if (FIELD_GET(GICV5_ITTL2E_VALID, *itte))
57d72196dfc850 Lorenzo Pieralisi 2025-07-03 855 return -EEXIST;
57d72196dfc850 Lorenzo Pieralisi 2025-07-03 856
57d72196dfc850 Lorenzo Pieralisi 2025-07-03 857 itt_entry = FIELD_PREP(GICV5_ITTL2E_LPI_ID, lpi) |
57d72196dfc850 Lorenzo Pieralisi 2025-07-03 858 FIELD_PREP(GICV5_ITTL2E_VALID, 0x1);
57d72196dfc850 Lorenzo Pieralisi 2025-07-03 859
57d72196dfc850 Lorenzo Pieralisi 2025-07-03 860 its_write_table_entry(its, itte, itt_entry);
57d72196dfc850 Lorenzo Pieralisi 2025-07-03 861
57d72196dfc850 Lorenzo Pieralisi 2025-07-03 862 gicv5_its_itt_cache_inv(its, its_dev->device_id, event_id);
57d72196dfc850 Lorenzo Pieralisi 2025-07-03 863
57d72196dfc850 Lorenzo Pieralisi 2025-07-03 864 return 0;
57d72196dfc850 Lorenzo Pieralisi 2025-07-03 865 }
57d72196dfc850 Lorenzo Pieralisi 2025-07-03 866
:::::: The code at line 854 was first introduced by commit
:::::: 57d72196dfc8502b7e376ecdffb11c4f8766f26d irqchip/gic-v5: Add GICv5 ITS support
:::::: TO: Lorenzo Pieralisi <lpieralisi@kernel.org>
:::::: CC: Marc Zyngier <maz@kernel.org>
--
0-DAY CI Kernel Test Service
https://github.com/intel/lkp-tests/wiki
^ permalink raw reply [flat|nested] 2+ messages in thread
* Re: drivers/irqchip/irq-gic-v5-its.c:854:13: sparse: sparse: restricted __le64 degrades to integer
2025-12-13 10:56 drivers/irqchip/irq-gic-v5-its.c:854:13: sparse: sparse: restricted __le64 degrades to integer kernel test robot
@ 2025-12-19 10:35 ` Lorenzo Pieralisi
0 siblings, 0 replies; 2+ messages in thread
From: Lorenzo Pieralisi @ 2025-12-19 10:35 UTC (permalink / raw)
To: kernel test robot; +Cc: oe-kbuild-all, linux-kernel, Marc Zyngier
On Sat, Dec 13, 2025 at 06:56:34PM +0800, kernel test robot wrote:
> Hi Lorenzo,
>
> First bad commit (maybe != root cause):
>
> tree: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master
> head: a859eca0e4cc96f63ff125dbe5388d961558b0e9
> commit: 53bb952a625fd3247647c7a28366ce990a579415 arm64: Kconfig: Enable GICv5
> date: 5 months ago
> config: arm64-randconfig-r113-20251213 (https://download.01.org/0day-ci/archive/20251213/202512131849.30ZRTBeR-lkp@intel.com/config)
> compiler: aarch64-linux-gcc (GCC) 12.5.0
> reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20251213/202512131849.30ZRTBeR-lkp@intel.com/reproduce)
>
> If you fix the issue in a separate patch/commit (i.e. not just a new version of
> the same patch/commit), kindly add following tags
> | Reported-by: kernel test robot <lkp@intel.com>
> | Closes: https://lore.kernel.org/oe-kbuild-all/202512131849.30ZRTBeR-lkp@intel.com/
>
> sparse warnings: (new ones prefixed by >>)
> drivers/irqchip/irq-gic-v5-its.c:854:13: sparse: sparse: cast to restricted __le64
> >> drivers/irqchip/irq-gic-v5-its.c:854:13: sparse: sparse: restricted __le64 degrades to integer
> >> drivers/irqchip/irq-gic-v5-its.c:854:13: sparse: sparse: restricted __le64 degrades to integer
>
> vim +854 drivers/irqchip/irq-gic-v5-its.c
>
> 57d72196dfc850 Lorenzo Pieralisi 2025-07-03 845
> 57d72196dfc850 Lorenzo Pieralisi 2025-07-03 846 static int gicv5_its_map_event(struct gicv5_its_dev *its_dev, u16 event_id, u32 lpi)
> 57d72196dfc850 Lorenzo Pieralisi 2025-07-03 847 {
> 57d72196dfc850 Lorenzo Pieralisi 2025-07-03 848 struct gicv5_its_chip_data *its = its_dev->its_node;
> 57d72196dfc850 Lorenzo Pieralisi 2025-07-03 849 u64 itt_entry;
> 57d72196dfc850 Lorenzo Pieralisi 2025-07-03 850 __le64 *itte;
> 57d72196dfc850 Lorenzo Pieralisi 2025-07-03 851
> 57d72196dfc850 Lorenzo Pieralisi 2025-07-03 852 itte = gicv5_its_device_get_itte_ref(its_dev, event_id);
> 57d72196dfc850 Lorenzo Pieralisi 2025-07-03 853
> 57d72196dfc850 Lorenzo Pieralisi 2025-07-03 @854 if (FIELD_GET(GICV5_ITTL2E_VALID, *itte))
> 57d72196dfc850 Lorenzo Pieralisi 2025-07-03 855 return -EEXIST;
Yep, that missed an le64_to_cpu() on the *itte value, fixed, will post the fix
shortly.
Thanks,
Lorenzo
> 57d72196dfc850 Lorenzo Pieralisi 2025-07-03 856
> 57d72196dfc850 Lorenzo Pieralisi 2025-07-03 857 itt_entry = FIELD_PREP(GICV5_ITTL2E_LPI_ID, lpi) |
> 57d72196dfc850 Lorenzo Pieralisi 2025-07-03 858 FIELD_PREP(GICV5_ITTL2E_VALID, 0x1);
> 57d72196dfc850 Lorenzo Pieralisi 2025-07-03 859
> 57d72196dfc850 Lorenzo Pieralisi 2025-07-03 860 its_write_table_entry(its, itte, itt_entry);
> 57d72196dfc850 Lorenzo Pieralisi 2025-07-03 861
> 57d72196dfc850 Lorenzo Pieralisi 2025-07-03 862 gicv5_its_itt_cache_inv(its, its_dev->device_id, event_id);
> 57d72196dfc850 Lorenzo Pieralisi 2025-07-03 863
> 57d72196dfc850 Lorenzo Pieralisi 2025-07-03 864 return 0;
> 57d72196dfc850 Lorenzo Pieralisi 2025-07-03 865 }
> 57d72196dfc850 Lorenzo Pieralisi 2025-07-03 866
>
> :::::: The code at line 854 was first introduced by commit
> :::::: 57d72196dfc8502b7e376ecdffb11c4f8766f26d irqchip/gic-v5: Add GICv5 ITS support
>
> :::::: TO: Lorenzo Pieralisi <lpieralisi@kernel.org>
> :::::: CC: Marc Zyngier <maz@kernel.org>
>
> --
> 0-DAY CI Kernel Test Service
> https://github.com/intel/lkp-tests/wiki
^ permalink raw reply [flat|nested] 2+ messages in thread
end of thread, other threads:[~2025-12-19 10:35 UTC | newest]
Thread overview: 2+ messages (download: mbox.gz follow: Atom feed
-- links below jump to the message on this page --
2025-12-13 10:56 drivers/irqchip/irq-gic-v5-its.c:854:13: sparse: sparse: restricted __le64 degrades to integer kernel test robot
2025-12-19 10:35 ` Lorenzo Pieralisi
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox