From: kernel test robot <lkp@intel.com>
To: Josh Poimboeuf <jpoimboe@kernel.org>
Cc: oe-kbuild-all@lists.linux.dev
Subject: [jpoimboe:sframe 9/10] arch/x86/include/asm/user_unwind.h:6:27: warning: overflow in conversion from 'long unsigned int' to 'int' changes value from '18446744073709551608' to '-8'
Date: Thu, 9 Nov 2023 13:30:09 +0800 [thread overview]
Message-ID: <202311091351.fO2QPxCn-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-buildonly-randconfig-006-20231109 (https://download.01.org/0day-ci/archive/20231109/202311091351.fO2QPxCn-lkp@intel.com/config)
compiler: gcc-12 (Debian 12.2.0-14) 12.2.0
reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20231109/202311091351.fO2QPxCn-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/202311091351.fO2QPxCn-lkp@intel.com/
All warnings (new ones prefixed by >>):
In file included from kernel/unwind/user.c:9:
>> arch/x86/include/asm/user_unwind.h:6:27: warning: overflow in conversion from 'long unsigned int' to 'int' changes value from '18446744073709551608' to '-8' [-Woverflow]
6 | .ra_off = sizeof(long) * -1, \
| ^~~~~~
kernel/unwind/user.c:12:9: note: in expansion of macro 'ARCH_INIT_USER_FP_FRAME'
12 | ARCH_INIT_USER_FP_FRAME
| ^~~~~~~~~~~~~~~~~~~~~~~
arch/x86/include/asm/user_unwind.h:8:27: warning: overflow in conversion from 'long unsigned int' to 'int' changes value from '18446744073709551600' to '-16' [-Woverflow]
8 | .fp_off = sizeof(long) * -2, \
| ^~~~~~
kernel/unwind/user.c:12:9: note: in expansion of macro 'ARCH_INIT_USER_FP_FRAME'
12 | ARCH_INIT_USER_FP_FRAME
| ^~~~~~~~~~~~~~~~~~~~~~~
vim +6 arch/x86/include/asm/user_unwind.h
28efef61435d2fb Josh Poimboeuf 2023-11-07 4
28efef61435d2fb Josh Poimboeuf 2023-11-07 5 #define ARCH_INIT_USER_FP_FRAME \
28efef61435d2fb Josh Poimboeuf 2023-11-07 @6 .ra_off = sizeof(long) * -1, \
28efef61435d2fb Josh Poimboeuf 2023-11-07 7 .cfa_off = sizeof(long) * 2, \
28efef61435d2fb Josh Poimboeuf 2023-11-07 8 .fp_off = sizeof(long) * -2, \
28efef61435d2fb Josh Poimboeuf 2023-11-07 9 .use_fp = true,
28efef61435d2fb Josh Poimboeuf 2023-11-07 10
:::::: The code at line 6 was first introduced by commit
:::::: 28efef61435d2fbb42bf26277adae0c630e05cf4 unwind/x86: Add HAVE_USER_UNWIND
:::::: 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 5:30 UTC|newest]
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