* [axboe:for-7.0/block 19/138] block/blk-crypto-fallback.c:154:17: sparse: sparse: cast from restricted blk_status_t
@ 2026-06-01 15:26 kernel test robot
2026-06-01 15:29 ` Christoph Hellwig
0 siblings, 1 reply; 3+ messages in thread
From: kernel test robot @ 2026-06-01 15:26 UTC (permalink / raw)
To: Christoph Hellwig; +Cc: oe-kbuild-all, Jens Axboe, Eric Biggers
tree: https://git.kernel.org/pub/scm/linux/kernel/git/axboe/linux.git for-7.0/block
head: 72f4d6fca699a1e35b39c5e5dacac2926d254135
commit: b37fbce460ad60b0c4449c1c7566cf24f3016713 [19/138] blk-crypto: optimize bio splitting in blk_crypto_fallback_encrypt_bio
config: powerpc64-randconfig-r111-20260601 (https://download.01.org/0day-ci/archive/20260601/202606012339.rZAl6Xq8-lkp@intel.com/config)
compiler: powerpc64-linux-gcc (GCC) 8.5.0
sparse: v0.6.5-rc1
reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20260601/202606012339.rZAl6Xq8-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/202606012339.rZAl6Xq8-lkp@intel.com/
sparse warnings: (new ones prefixed by >>)
>> block/blk-crypto-fallback.c:154:17: sparse: sparse: cast from restricted blk_status_t
>> block/blk-crypto-fallback.c:154:17: sparse: sparse: cast from restricted blk_status_t
block/blk-crypto-fallback.c:154:17: sparse: sparse: cast to restricted blk_status_t
vim +154 block/blk-crypto-fallback.c
143
144 static void blk_crypto_fallback_encrypt_endio(struct bio *enc_bio)
145 {
146 struct bio *src_bio = enc_bio->bi_private;
147 int i;
148
149 for (i = 0; i < enc_bio->bi_vcnt; i++)
150 mempool_free(enc_bio->bi_io_vec[i].bv_page,
151 blk_crypto_bounce_page_pool);
152
153 if (enc_bio->bi_status)
> 154 cmpxchg(&src_bio->bi_status, 0, enc_bio->bi_status);
155
156 bio_put(enc_bio);
157 bio_endio(src_bio);
158 }
159
--
0-DAY CI Kernel Test Service
https://github.com/intel/lkp-tests/wiki
^ permalink raw reply [flat|nested] 3+ messages in thread
* Re: [axboe:for-7.0/block 19/138] block/blk-crypto-fallback.c:154:17: sparse: sparse: cast from restricted blk_status_t
2026-06-01 15:26 [axboe:for-7.0/block 19/138] block/blk-crypto-fallback.c:154:17: sparse: sparse: cast from restricted blk_status_t kernel test robot
@ 2026-06-01 15:29 ` Christoph Hellwig
2026-08-13 8:20 ` Christophe Leroy (CS GROUP)
0 siblings, 1 reply; 3+ messages in thread
From: Christoph Hellwig @ 2026-06-01 15:29 UTC (permalink / raw)
To: kernel test robot
Cc: Christoph Hellwig, oe-kbuild-all, Jens Axboe, Eric Biggers,
Madhavan Srinivasan, Michael Ellerman, Nicholas Piggin,
Christophe Leroy (CS GROUP), linuxppc-dev
I think powerpc really need to pick the tricks from other architectures
to make cmpxchg work on __bitwise fields.
On Mon, Jun 01, 2026 at 11:26:16PM +0800, kernel test robot wrote:
> tree: https://git.kernel.org/pub/scm/linux/kernel/git/axboe/linux.git for-7.0/block
> head: 72f4d6fca699a1e35b39c5e5dacac2926d254135
> commit: b37fbce460ad60b0c4449c1c7566cf24f3016713 [19/138] blk-crypto: optimize bio splitting in blk_crypto_fallback_encrypt_bio
> config: powerpc64-randconfig-r111-20260601 (https://download.01.org/0day-ci/archive/20260601/202606012339.rZAl6Xq8-lkp@intel.com/config)
> compiler: powerpc64-linux-gcc (GCC) 8.5.0
> sparse: v0.6.5-rc1
> reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20260601/202606012339.rZAl6Xq8-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/202606012339.rZAl6Xq8-lkp@intel.com/
>
> sparse warnings: (new ones prefixed by >>)
> >> block/blk-crypto-fallback.c:154:17: sparse: sparse: cast from restricted blk_status_t
> >> block/blk-crypto-fallback.c:154:17: sparse: sparse: cast from restricted blk_status_t
> block/blk-crypto-fallback.c:154:17: sparse: sparse: cast to restricted blk_status_t
>
> vim +154 block/blk-crypto-fallback.c
>
> 143
> 144 static void blk_crypto_fallback_encrypt_endio(struct bio *enc_bio)
> 145 {
> 146 struct bio *src_bio = enc_bio->bi_private;
> 147 int i;
> 148
> 149 for (i = 0; i < enc_bio->bi_vcnt; i++)
> 150 mempool_free(enc_bio->bi_io_vec[i].bv_page,
> 151 blk_crypto_bounce_page_pool);
> 152
> 153 if (enc_bio->bi_status)
> > 154 cmpxchg(&src_bio->bi_status, 0, enc_bio->bi_status);
> 155
> 156 bio_put(enc_bio);
> 157 bio_endio(src_bio);
> 158 }
> 159
>
> --
> 0-DAY CI Kernel Test Service
> https://github.com/intel/lkp-tests/wiki
---end quoted text---
^ permalink raw reply [flat|nested] 3+ messages in thread
* Re: [axboe:for-7.0/block 19/138] block/blk-crypto-fallback.c:154:17: sparse: sparse: cast from restricted blk_status_t
2026-06-01 15:29 ` Christoph Hellwig
@ 2026-08-13 8:20 ` Christophe Leroy (CS GROUP)
0 siblings, 0 replies; 3+ messages in thread
From: Christophe Leroy (CS GROUP) @ 2026-08-13 8:20 UTC (permalink / raw)
To: Christoph Hellwig, kernel test robot
Cc: oe-kbuild-all, Jens Axboe, Eric Biggers, Madhavan Srinivasan,
Michael Ellerman, Nicholas Piggin, linuxppc-dev
Hi,
Le 01/06/2026 à 17:29, Christoph Hellwig a écrit :
> I think powerpc really need to pick the tricks from other architectures
> to make cmpxchg work on __bitwise fields.
Thanks,
Should be fixed by
https://lore.kernel.org/all/289a7ffac9cb5b6d26a57fdc26605bf725285302.1786608980.git.chleroy@kernel.org/
Based on commit 212dd8477653 ("arm64: Silence sparse warnings caused by
the type casting in (cmp)xchg")
Christophe
>
> On Mon, Jun 01, 2026 at 11:26:16PM +0800, kernel test robot wrote:
>> tree: https://eur01.safelinks.protection.outlook.com/?url=https%3A%2F%2Fgit.kernel.org%2Fpub%2Fscm%2Flinux%2Fkernel%2Fgit%2Faxboe%2Flinux.git&data=05%7C02%7Cchristophe.leroy%40csgroup.eu%7Cb09ed76c517f4ac2a96a08debff29913%7C8b87af7d86474dc78df45f69a2011bb5%7C0%7C0%7C639159245835365955%7CUnknown%7CTWFpbGZsb3d8eyJFbXB0eU1hcGkiOnRydWUsIlYiOiIwLjAuMDAwMCIsIlAiOiJXaW4zMiIsIkFOIjoiTWFpbCIsIldUIjoyfQ%3D%3D%7C0%7C%7C%7C&sdata=SCrQIL52YejLyMbT487%2Fu4y7bDdqD3W0NISJGASlqnI%3D&reserved=0 for-7.0/block
>> head: 72f4d6fca699a1e35b39c5e5dacac2926d254135
>> commit: b37fbce460ad60b0c4449c1c7566cf24f3016713 [19/138] blk-crypto: optimize bio splitting in blk_crypto_fallback_encrypt_bio
>> config: powerpc64-randconfig-r111-20260601 (https://eur01.safelinks.protection.outlook.com/?url=https%3A%2F%2Fdownload.01.org%2F0day-ci%2Farchive%2F20260601%2F202606012339.rZAl6Xq8-lkp%40intel.com%2Fconfig&data=05%7C02%7Cchristophe.leroy%40csgroup.eu%7Cb09ed76c517f4ac2a96a08debff29913%7C8b87af7d86474dc78df45f69a2011bb5%7C0%7C0%7C639159245835742509%7CUnknown%7CTWFpbGZsb3d8eyJFbXB0eU1hcGkiOnRydWUsIlYiOiIwLjAuMDAwMCIsIlAiOiJXaW4zMiIsIkFOIjoiTWFpbCIsIldUIjoyfQ%3D%3D%7C0%7C%7C%7C&sdata=mcTjhCA7fN2FQAsYEiRRY3xTOyBg%2BNJxAwMqeSERPG4%3D&reserved=0)
>> compiler: powerpc64-linux-gcc (GCC) 8.5.0
>> sparse: v0.6.5-rc1
>> reproduce (this is a W=1 build): (https://eur01.safelinks.protection.outlook.com/?url=https%3A%2F%2Fdownload.01.org%2F0day-ci%2Farchive%2F20260601%2F202606012339.rZAl6Xq8-lkp%40intel.com%2Freproduce&data=05%7C02%7Cchristophe.leroy%40csgroup.eu%7Cb09ed76c517f4ac2a96a08debff29913%7C8b87af7d86474dc78df45f69a2011bb5%7C0%7C0%7C639159245835767299%7CUnknown%7CTWFpbGZsb3d8eyJFbXB0eU1hcGkiOnRydWUsIlYiOiIwLjAuMDAwMCIsIlAiOiJXaW4zMiIsIkFOIjoiTWFpbCIsIldUIjoyfQ%3D%3D%7C0%7C%7C%7C&sdata=3IobnZTPyXIEKog3PvyDf%2Bti4W%2F4jFM8O5QZG%2FVn%2Bkw%3D&reserved=0)
>>
>> 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://eur01.safelinks.protection.outlook.com/?url=https%3A%2F%2Flore.kernel.org%2Foe-kbuild-all%2F202606012339.rZAl6Xq8-lkp%40intel.com%2F&data=05%7C02%7Cchristophe.leroy%40csgroup.eu%7Cb09ed76c517f4ac2a96a08debff29913%7C8b87af7d86474dc78df45f69a2011bb5%7C0%7C0%7C639159245835785008%7CUnknown%7CTWFpbGZsb3d8eyJFbXB0eU1hcGkiOnRydWUsIlYiOiIwLjAuMDAwMCIsIlAiOiJXaW4zMiIsIkFOIjoiTWFpbCIsIldUIjoyfQ%3D%3D%7C0%7C%7C%7C&sdata=dkHYbj0M7dRIfeyg8uLlJgQlMYbYi91eHIOx5FZOpJ0%3D&reserved=0
>>
>> sparse warnings: (new ones prefixed by >>)
>>>> block/blk-crypto-fallback.c:154:17: sparse: sparse: cast from restricted blk_status_t
>>>> block/blk-crypto-fallback.c:154:17: sparse: sparse: cast from restricted blk_status_t
>> block/blk-crypto-fallback.c:154:17: sparse: sparse: cast to restricted blk_status_t
>>
>> vim +154 block/blk-crypto-fallback.c
>>
>> 143
>> 144 static void blk_crypto_fallback_encrypt_endio(struct bio *enc_bio)
>> 145 {
>> 146 struct bio *src_bio = enc_bio->bi_private;
>> 147 int i;
>> 148
>> 149 for (i = 0; i < enc_bio->bi_vcnt; i++)
>> 150 mempool_free(enc_bio->bi_io_vec[i].bv_page,
>> 151 blk_crypto_bounce_page_pool);
>> 152
>> 153 if (enc_bio->bi_status)
>> > 154 cmpxchg(&src_bio->bi_status, 0, enc_bio->bi_status);
>> 155
>> 156 bio_put(enc_bio);
>> 157 bio_endio(src_bio);
>> 158 }
>> 159
>>
>> --
>> 0-DAY CI Kernel Test Service
>> https://eur01.safelinks.protection.outlook.com/?url=https%3A%2F%2Fgithub.com%2Fintel%2Flkp-tests%2Fwiki&data=05%7C02%7Cchristophe.leroy%40csgroup.eu%7Cb09ed76c517f4ac2a96a08debff29913%7C8b87af7d86474dc78df45f69a2011bb5%7C0%7C0%7C639159245835802872%7CUnknown%7CTWFpbGZsb3d8eyJFbXB0eU1hcGkiOnRydWUsIlYiOiIwLjAuMDAwMCIsIlAiOiJXaW4zMiIsIkFOIjoiTWFpbCIsIldUIjoyfQ%3D%3D%7C0%7C%7C%7C&sdata=4Iyio2M%2Fz52Q9ilcjHSE%2Fmy98xR53NJQm%2FzwwXDH1qo%3D&reserved=0
> ---end quoted text---
^ permalink raw reply [flat|nested] 3+ messages in thread
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2026-06-01 15:26 [axboe:for-7.0/block 19/138] block/blk-crypto-fallback.c:154:17: sparse: sparse: cast from restricted blk_status_t kernel test robot
2026-06-01 15:29 ` Christoph Hellwig
2026-08-13 8:20 ` Christophe Leroy (CS GROUP)
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