From: kernel test robot <lkp@intel.com>
To: Josh Poimboeuf <jpoimboe@kernel.org>
Cc: llvm@lists.linux.dev, oe-kbuild-all@lists.linux.dev
Subject: [jpoimboe:sframe 9/10] kernel/unwind/user.c:12:2: warning: implicit conversion from 'unsigned long' to 's32' (aka 'int') changes value from 18446744073709551600 to -16
Date: Fri, 10 Nov 2023 05:53:57 +0800 [thread overview]
Message-ID: <202311100530.pjdNYUBV-lkp@intel.com> (raw)
tree: https://git.kernel.org/pub/scm/linux/kernel/git/jpoimboe/linux.git sframe
head: ec004e900e02c9c85cf8c89d4c26d4168a6c5d18
commit: 09460e60dd1c2f8ea1abb8d9188195db699ce76f [9/10] unwind: Introduce SFrame user space unwinding
config: x86_64-rhel-8.3-rust (https://download.01.org/0day-ci/archive/20231110/202311100530.pjdNYUBV-lkp@intel.com/config)
compiler: clang version 16.0.4 (https://github.com/llvm/llvm-project.git ae42196bc493ffe877a7e3dff8be32035dea4d07)
reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20231110/202311100530.pjdNYUBV-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/202311100530.pjdNYUBV-lkp@intel.com/
All warnings (new ones prefixed by >>):
>> kernel/unwind/user.c:12:2: warning: implicit conversion from 'unsigned long' to 's32' (aka 'int') changes value from 18446744073709551600 to -16 [-Wconstant-conversion]
ARCH_INIT_USER_FP_FRAME
^~~~~~~~~~~~~~~~~~~~~~~
arch/x86/include/asm/user_unwind.h:8:26: note: expanded from macro 'ARCH_INIT_USER_FP_FRAME'
.fp_off = sizeof(long) * -2, \
~~~~~~~~~~~~~^~~~
kernel/unwind/user.c:12:2: warning: implicit conversion from 'unsigned long' to 's32' (aka 'int') changes value from 18446744073709551608 to -8 [-Wconstant-conversion]
ARCH_INIT_USER_FP_FRAME
^~~~~~~~~~~~~~~~~~~~~~~
arch/x86/include/asm/user_unwind.h:6:26: note: expanded from macro 'ARCH_INIT_USER_FP_FRAME'
.ra_off = sizeof(long) * -1, \
~~~~~~~~~~~~~^~~~
2 warnings generated.
vim +12 kernel/unwind/user.c
bd5cff471e67cf Josh Poimboeuf 2023-11-07 10
bd5cff471e67cf Josh Poimboeuf 2023-11-07 11 static struct user_unwind_frame fp_frame = {
bd5cff471e67cf Josh Poimboeuf 2023-11-07 @12 ARCH_INIT_USER_FP_FRAME
bd5cff471e67cf Josh Poimboeuf 2023-11-07 13 };
bd5cff471e67cf Josh Poimboeuf 2023-11-07 14
:::::: The code at line 12 was first introduced by commit
:::::: bd5cff471e67cf8d2b2d3bd8db35007ccc86f6a4 unwind: Introduce generic user space unwinding interfaces
:::::: TO: Josh Poimboeuf <jpoimboe@kernel.org>
:::::: CC: Josh Poimboeuf <jpoimboe@kernel.org>
--
0-DAY CI Kernel Test Service
https://github.com/intel/lkp-tests/wiki
reply other threads:[~2023-11-09 21:54 UTC|newest]
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