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.chle...@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:
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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):
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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 <[email protected]>
| 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
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