Re: linux-next: build failure after merge of the block tree

Jens Axboe
2025-10-22T17:17:09Z

On 10/21/25 11:25 PM, Stephen Rothwell wrote:
> Hi all,
>
> After merging the block tree, today's linux-next build (x86_64 defconfig
> clang-17) failed like this:
>
> io_uring/fdinfo.c:103:22: error: variable 'sqe' is uninitialized when used here [-Werror,-Wuninitialized]
> 103 | opcode = READ_ONCE(sqe->opcode);
> | ^~~
> ./include/asm-generic/rwonce.h:50:14: note: expanded from macro 'READ_ONCE'
> 50 | __READ_ONCE(x); \
> AR drivers/irqchip/built-in.a
> | ^
> ./include/asm-generic/rwonce.h:44:72: note: expanded from macro '__READ_ONCE'
> 44 | #define __READ_ONCE(x) (*(const volatile __unqual_scalar_typeof(x) *)&(x))
> | ^
> io_uring/fdinfo.c:92:27: note: initialize the variable 'sqe' to silence this warning
> 92 | struct io_uring_sqe *sqe;
> | ^
> | = NULL
> 1 error generated.
>
> Introduced by commit
>
> 31dc41afdef2 ("io_uring: add support for IORING_SETUP_SQE_MIXED")

Yep sorry about that, the current tree should be fine.

--
Jens Axboe