The s390 builds failed with clang-19 with defconfig on the
Linux next-20241203 tag due to following build warnings / errors.
Build pass with gcc-13 defconfig for s390.
First seen on Linux next-20241203 tag
GOOD: Linux next-20241128 tag
BAD: Linux next-20241203 tag
List of arch and toolchains :
s390 defconfig with clang-19
s390:
build:
* clang-19-defconfig
* korg-clang-19-lkftconfig-lto-full
* korg-clang-19-lkftconfig-hardening
* korg-clang-19-lkftconfig-lto-thing
Reported-by: Linux Kernel Functional Testing <lkft@xxxxxxxxxx>
Build log:
===========
block/blk-iocost.c:1101:11: error: call to '__compiletime_assert_557'
declared with 'error' attribute: clamp() low limit 1 greater than high
limit active
1101 | inuse = clamp_t(u32, inuse, 1, active);
| ^
include/linux/minmax.h:218:36: note: expanded from macro 'clamp_t'
218 | #define clamp_t(type, val, lo, hi) __careful_clamp(type, val, lo, hi)
| ^
include/linux/minmax.h:195:2: note: expanded from macro '__careful_clamp'
195 | __clamp_once(type, val, lo, hi, __UNIQUE_ID(v_),
__UNIQUE_ID(l_), __UNIQUE_ID(h_))
| ^
include/linux/minmax.h:188:2: note: expanded from macro '__clamp_once'
188 | BUILD_BUG_ON_MSG(statically_true(ulo > uhi),
\
| ^
note: (skipping 2 expansions in backtrace; use
-fmacro-backtrace-limit=0 to see all)
include/linux/compiler_types.h:530:2: note: expanded from macro
'_compiletime_assert'
530 | __compiletime_assert(condition, msg, prefix, suffix)
| ^
include/linux/compiler_types.h:523:4: note: expanded from macro
'__compiletime_assert'
523 | prefix ## suffix();
\
| ^
<scratch space>:38:1: note: expanded from here
38 | __compiletime_assert_557
| ^
block/blk-iocost.c:1101:11: error: call to '__compiletime_assert_557'
declared with 'error' attribute: clamp() low limit 1 greater than high
limit active
include/linux/minmax.h:218:36: note: expanded from macro 'clamp_t'
218 | #define clamp_t(type, val, lo, hi) __careful_clamp(type, val, lo, hi)
| ^
include/linux/minmax.h:195:2: note: expanded from macro '__careful_clamp'
195 | __clamp_once(type, val, lo, hi, __UNIQUE_ID(v_),
__UNIQUE_ID(l_), __UNIQUE_ID(h_))
| ^
include/linux/minmax.h:188:2: note: expanded from macro '__clamp_once'
188 | BUILD_BUG_ON_MSG(statically_true(ulo > uhi),
\
| ^
note: (skipping 2 expansions in backtrace; use
-fmacro-backtrace-limit=0 to see all)
include/linux/compiler_types.h:530:2: note: expanded from macro
'_compiletime_assert'
530 | __compiletime_assert(condition, msg, prefix, suffix)
| ^
include/linux/compiler_types.h:523:4: note: expanded from macro
'__compiletime_assert'
523 | prefix ## suffix();
\
| ^
<scratch space>:38:1: note: expanded from here
38 | __compiletime_assert_557
| ^
2 errors generated.
Links:
---
- https://qa-reports.linaro.org/lkft/linux-next-master/build/next-20241203/testrun/26188938/suite/build/test/clang-19-defconfig/log
- https://qa-reports.linaro.org/lkft/linux-next-master/build/next-20241203/testrun/26188938/suite/build/test/clang-19-defconfig/history/
- https://qa-reports.linaro.org/lkft/linux-next-master/build/next-20241203/testrun/26188938/suite/build/test/clang-19-defconfig/details/
Steps to reproduce:
------------
# tuxmake --runtime podman --target-arch s390 --toolchain clang-19
--kconfig defconfig LLVM_IAS=1
metadata:
----
git describe: next-20241203
git repo: https://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git
git sha: c245a7a79602ccbee780c004c1e4abcda66aec32
kernel config:
https://storage.tuxsuite.com/public/linaro/lkft/builds/2pjAPS9UrJkbAKFHktQei7eqW4Y/config
build url: https://storage.tuxsuite.com/public/linaro/lkft/builds/2pjAPS9UrJkbAKFHktQei7eqW4Y/
toolchain: clang-19
config: clang-19-defconfig
arch: s390
--
Linaro LKFT
https://lkft.linaro.org
