linux-kernel - next-20250922: arm riscv32 flexfilelayout.c:685:2: error: incompatible pointer types passing 'u32 *'

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Message-ID: <CA+G9fYvq732po6A=X=1Bm_zLZMAK50y+8sEToWVm38uQfOke1Q@mail.gmail.com>
Date: Mon, 22 Sep 2025 23:29:53 +0530
From: Naresh Kamboju <naresh.kamboju@...aro.org>
To: linux-nfs@...r.kernel.org, linux-fsdevel@...r.kernel.org, 
	open list <linux-kernel@...r.kernel.org>, lkft-triage@...ts.linaro.org, 
	Linux Regressions <regressions@...ts.linux.dev>, clang-built-linux <llvm@...ts.linux.dev>
Cc: Trond Myklebust <trondmy@...nel.org>, Anna Schumaker <anna@...nel.org>, 
	Anna Schumaker <anna.schumaker@...cle.com>, Jonathan Curley <jcurley@...estorage.com>, 
	Nathan Chancellor <nathan@...nel.org>, Arnd Bergmann <arnd@...db.de>, 
	Dan Carpenter <dan.carpenter@...aro.org>, Anders Roxell <anders.roxell@...aro.org>, 
	Ben Copeland <benjamin.copeland@...aro.org>
Subject: next-20250922: arm riscv32 flexfilelayout.c:685:2: error:
 incompatible pointer types passing 'u32 *'

The arm and riscv32 builds failed on the Linux next-20250922 tag build due
to following build warnings / errors with clang toolchain.

First seen on next-20250922
Good: next-20250919
Bad: next-20250922

Regression Analysis:
- New regression? yes
- Reproducibility? yes

Test regression: next-20250922: arm riscv32 flexfilelayout.c:685:2:
error: incompatible pointer types passing 'u32 *'

Reported-by: Linux Kernel Functional Testing <lkft@...aro.org>

## Build error

fs/nfs/flexfilelayout/flexfilelayout.c:685:2: error: incompatible
pointer types passing 'u32 *' (aka 'unsigned int *') to parameter of
type 'uint64_t *' (aka 'unsigned long long *')
[-Wincompatible-pointer-types]
  685 |         do_div(mirror_idx, flseg->mirror_array[0]->dss_count);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
include/asm-generic/div64.h:199:22: note: expanded from macro 'do_div'
  199 |                 __rem = __div64_32(&(n), __base);       \
      |                                    ^~~~
arch/arm/include/asm/div64.h:24:45: note: passing argument to parameter 'n' here
   24 | static inline uint32_t __div64_32(uint64_t *n, uint32_t base)
      |                                             ^


## Source
* Kernel version: 6.17.0-rc7
* Git tree: https://kernel.googlesource.com/pub/scm/linux/kernel/git/next/linux-next.git
* Git describe: 6.17.0-rc6-next-20250922
* Git commit: bf2602a3cb2381fb1a04bf1c39a290518d2538d1
* Architectures: arm riscv32
* Toolchains: Debian clang version 20.1.8
* Kconfigs: lkftconfigs

## Build
* Build log: https://qa-reports.linaro.org/api/testruns/29967175/log_file/
* Build details:
https://regressions.linaro.org/lkft/linux-next-master/next-20250922/log-parser-build-clang/clang-compiler-fs_nfs_flexfilelayout_flexfilelayout_c-error-incompatible-pointer-types-passing-u-aka-unsigned-int-to-parameter-of-type-uint_t-aka-unsigned-long-long/
* Build plan: https://tuxapi.tuxsuite.com/v1/groups/linaro/projects/lkft/builds/333IdxAGk8S0TDZQ0YbgzNOtKgs
* Build link: https://storage.tuxsuite.com/public/linaro/lkft/builds/333IdxAGk8S0TDZQ0YbgzNOtKgs/
* Kernel config:
https://storage.tuxsuite.com/public/linaro/lkft/builds/333IdxAGk8S0TDZQ0YbgzNOtKgs/config

--
Linaro LKFT