* Re: [PATCH v1 7/9] fuse: add io-uring kernel-managed buffer ring
[not found] <20260324224532.3733468-8-joannelkoong@gmail.com>
@ 2026-03-28 12:21 ` kernel test robot
0 siblings, 0 replies; only message in thread
From: kernel test robot @ 2026-03-28 12:21 UTC (permalink / raw)
To: Joanne Koong, axboe; +Cc: llvm, oe-kbuild-all, miklos, bschubert, linux-fsdevel
Hi Joanne,
kernel test robot noticed the following build errors:
[auto build test ERROR on mszeredi-fuse/for-next]
[also build test ERROR on linus/master v7.0-rc5 next-20260327]
[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/Joanne-Koong/fuse-separate-next-request-fetching-from-sending-logic/20260328-142620
base: https://git.kernel.org/pub/scm/linux/kernel/git/mszeredi/fuse.git for-next
patch link: https://lore.kernel.org/r/20260324224532.3733468-8-joannelkoong%40gmail.com
patch subject: [PATCH v1 7/9] fuse: add io-uring kernel-managed buffer ring
config: x86_64-kexec (https://download.01.org/0day-ci/archive/20260328/202603281347.IHl1ccbK-lkp@intel.com/config)
compiler: clang version 20.1.8 (https://github.com/llvm/llvm-project 87f0227cb60147a26a1eeb4fb06e3b505e9c7261)
reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20260328/202603281347.IHl1ccbK-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/202603281347.IHl1ccbK-lkp@intel.com/
All errors (new ones prefixed by >>):
>> fs/fuse/dev_uring.c:296:17: error: call to undeclared function 'io_uring_registered_mem_region_get'; ISO C99 and later do not support implicit function declarations [-Wimplicit-function-declaration]
296 | mem_reg_addr = io_uring_registered_mem_region_get(cmd, &nr_pages,
| ^
>> fs/fuse/dev_uring.c:296:15: error: incompatible integer to pointer conversion assigning to 'void *' from 'int' [-Wint-conversion]
296 | mem_reg_addr = io_uring_registered_mem_region_get(cmd, &nr_pages,
| ^ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
297 | issue_flags);
| ~~~~~~~~~~~~
>> fs/fuse/dev_uring.c:334:8: error: call to undeclared function 'io_uring_buf_ring_pin'; ISO C99 and later do not support implicit function declarations [-Wimplicit-function-declaration]
334 | err = io_uring_buf_ring_pin(cmd, FUSE_URING_BUFRING_GROUP, issue_flags,
| ^
>> fs/fuse/dev_uring.c:339:7: error: call to undeclared function 'io_uring_is_kmbuf_ring'; ISO C99 and later do not support implicit function declarations [-Wimplicit-function-declaration]
339 | if (!io_uring_is_kmbuf_ring(cmd, FUSE_URING_BUFRING_GROUP, issue_flags))
| ^
>> fs/fuse/dev_uring.c:349:2: error: call to undeclared function 'io_uring_buf_ring_unpin'; ISO C99 and later do not support implicit function declarations [-Wimplicit-function-declaration]
349 | io_uring_buf_ring_unpin(cmd, FUSE_URING_BUFRING_GROUP, issue_flags);
| ^
fs/fuse/dev_uring.c:400:4: error: call to undeclared function 'io_uring_buf_ring_unpin'; ISO C99 and later do not support implicit function declarations [-Wimplicit-function-declaration]
400 | io_uring_buf_ring_unpin(cmd, FUSE_URING_BUFRING_GROUP,
| ^
>> fs/fuse/dev_uring.c:903:8: error: call to undeclared function 'io_ring_buffer_select'; ISO C99 and later do not support implicit function declarations [-Wimplicit-function-declaration]
903 | sel = io_ring_buffer_select(cmd_to_io_kiocb(ent->cmd), &len,
| ^
fs/fuse/dev_uring.c:903:8: note: did you mean 'io_uring_cmd_buffer_select'?
include/linux/io_uring/cmd.h:83:18: note: 'io_uring_cmd_buffer_select' declared here
83 | struct io_br_sel io_uring_cmd_buffer_select(struct io_uring_cmd *ioucmd,
| ^
>> fs/fuse/dev_uring.c:903:6: error: assigning to 'struct io_br_sel' from incompatible type 'int'
903 | sel = io_ring_buffer_select(cmd_to_io_kiocb(ent->cmd), &len,
| ^ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
904 | ent->queue->bufring.list, issue_flags);
| ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>> fs/fuse/dev_uring.c:907:11: error: no member named 'kaddr' in 'struct io_br_sel'; did you mean 'addr'?
907 | if (!sel.kaddr)
| ^~~~~
| addr
include/linux/io_uring_types.h:100:16: note: 'addr' declared here
100 | void __user *addr;
| ^
fs/fuse/dev_uring.c:910:35: error: no member named 'kaddr' in 'struct io_br_sel'; did you mean 'addr'?
910 | ent->payload_kvec.iov_base = sel.kaddr;
| ^~~~~
| addr
include/linux/io_uring_types.h:100:16: note: 'addr' declared here
100 | void __user *addr;
| ^
>> fs/fuse/dev_uring.c:912:20: error: no member named 'buf_id' in 'struct io_br_sel'
912 | ent->buf_id = sel.buf_id;
| ~~~ ^
>> fs/fuse/dev_uring.c:928:15: error: call to undeclared function 'io_uring_kmbuf_recycle'; ISO C99 and later do not support implicit function declarations [-Wimplicit-function-declaration]
928 | WARN_ON_ONCE(io_uring_kmbuf_recycle(ent->cmd, FUSE_URING_BUFRING_GROUP,
| ^
12 errors generated.
vim +/io_uring_registered_mem_region_get +296 fs/fuse/dev_uring.c
285
286 static void *fuse_uring_get_buf_ring_headers(struct io_uring_cmd *cmd,
287 u64 headers_offset,
288 unsigned int queue_depth,
289 unsigned int issue_flags)
290 {
291 void *mem_reg_addr;
292 u64 mem_reg_size, headers_size;
293 unsigned nr_pages;
294
295 /* find the headers in the registered memory region */
> 296 mem_reg_addr = io_uring_registered_mem_region_get(cmd, &nr_pages,
297 issue_flags);
298
299 /* server does not have a registered memory region set up */
300 if (!mem_reg_addr)
301 return NULL;
302
303 mem_reg_size = (u64)nr_pages * PAGE_SIZE;
304 if (headers_offset > mem_reg_size)
305 return NULL;
306
307 /* verify headers fit within memory region bounds */
308 headers_size = (u64)queue_depth * sizeof(struct fuse_uring_req_header);
309 if (mem_reg_size - headers_offset < headers_size)
310 return NULL;
311
312 return mem_reg_addr + headers_offset;
313 }
314
315 static int fuse_uring_buf_ring_setup(struct io_uring_cmd *cmd,
316 struct fuse_ring_queue *queue,
317 unsigned int issue_flags)
318 {
319 const struct fuse_uring_cmd_req *cmd_req =
320 io_uring_sqe128_cmd(cmd->sqe, struct fuse_uring_cmd_req);
321 u64 headers_offset = READ_ONCE(cmd_req->init.headers_offset);
322 unsigned queue_depth = READ_ONCE(cmd_req->init.queue_depth);
323 void *headers;
324 int err;
325
326 if (!queue_depth)
327 return -EINVAL;
328
329 headers = fuse_uring_get_buf_ring_headers(cmd, headers_offset,
330 queue_depth, issue_flags);
331 if (!headers)
332 return -EINVAL;
333
> 334 err = io_uring_buf_ring_pin(cmd, FUSE_URING_BUFRING_GROUP, issue_flags,
335 &queue->bufring.list);
336 if (err)
337 return err;
338
> 339 if (!io_uring_is_kmbuf_ring(cmd, FUSE_URING_BUFRING_GROUP, issue_flags))
340 goto error;
341
342 queue->bufring.headers = headers;
343 queue->bufring.queue_depth = queue_depth;
344 queue->bufring.enabled = true;
345
346 return 0;
347
348 error:
> 349 io_uring_buf_ring_unpin(cmd, FUSE_URING_BUFRING_GROUP, issue_flags);
350 return -EINVAL;
351 }
352
--
0-DAY CI Kernel Test Service
https://github.com/intel/lkp-tests/wiki
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[not found] <20260324224532.3733468-8-joannelkoong@gmail.com>
2026-03-28 12:21 ` [PATCH v1 7/9] fuse: add io-uring kernel-managed buffer ring kernel test robot
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