From: kernel test robot <lkp@intel.com>
To: Peter Zijlstra <peterz@infradead.org>
Cc: oe-kbuild-all@lists.linux.dev
Subject: [peterz-queue:x86/core 5/6] arch/x86/entry/entry_64.S:444: Error: register type mismatch for `xor'
Date: Fri, 10 Feb 2023 22:56:43 +0800 [thread overview]
Message-ID: <202302102218.RuerOFwB-lkp@intel.com> (raw)
Hi Peter,
FYI, the error/warning was bisected to this commit, please ignore it if it's irrelevant.
tree: https://git.kernel.org/pub/scm/linux/kernel/git/peterz/queue.git x86/core
head: cc1feb4e38be192cd99f7598777ff691f8a8a20e
commit: 943db25eef966d66b8d6edd9d83ce9cb117f7ee9 [5/6] x86: Shorten RESET_CALL_DEPTH
config: x86_64-randconfig-a004 (https://download.01.org/0day-ci/archive/20230210/202302102218.RuerOFwB-lkp@intel.com/config)
compiler: gcc-11 (Debian 11.3.0-8) 11.3.0
reproduce (this is a W=1 build):
# https://git.kernel.org/pub/scm/linux/kernel/git/peterz/queue.git/commit/?id=943db25eef966d66b8d6edd9d83ce9cb117f7ee9
git remote add peterz-queue https://git.kernel.org/pub/scm/linux/kernel/git/peterz/queue.git
git fetch --no-tags peterz-queue x86/core
git checkout 943db25eef966d66b8d6edd9d83ce9cb117f7ee9
# save the config file
mkdir build_dir && cp config build_dir/.config
make W=1 O=build_dir ARCH=x86_64 olddefconfig
make W=1 O=build_dir ARCH=x86_64 SHELL=/bin/bash
If you fix the issue, kindly add following tag where applicable
| Reported-by: kernel test robot <lkp@intel.com>
| Link: https://lore.kernel.org/oe-kbuild-all/202302102218.RuerOFwB-lkp@intel.com/
All errors (new ones prefixed by >>):
arch/x86/entry/entry_64.S: Assembler messages:
>> arch/x86/entry/entry_64.S:444: Error: register type mismatch for `xor'
arch/x86/entry/entry_64.S:290: Info: macro invoked from here
arch/x86/entry/entry_64.S:118: Info: macro invoked from here
>> arch/x86/entry/entry_64.S:444: Error: register type mismatch for `xor'
arch/x86/entry/entry_64.S:290: Info: macro invoked from here
arch/x86/entry/entry_64.S:1227: Info: macro invoked from here
vim +444 arch/x86/entry/entry_64.S
6368558c37107b Thomas Gleixner 2020-05-21 438
cfa82a00533f70 Thomas Gleixner 2020-02-25 439 /**
cfa82a00533f70 Thomas Gleixner 2020-02-25 440 * idtentry_mce_db - Macro to generate entry stubs for #MC and #DB
cfa82a00533f70 Thomas Gleixner 2020-02-25 441 * @vector: Vector number
cfa82a00533f70 Thomas Gleixner 2020-02-25 442 * @asmsym: ASM symbol for the entry point
cfa82a00533f70 Thomas Gleixner 2020-02-25 443 * @cfunc: C function to be called
cfa82a00533f70 Thomas Gleixner 2020-02-25 @444 *
cfa82a00533f70 Thomas Gleixner 2020-02-25 445 * The macro emits code to set up the kernel context for #MC and #DB
cfa82a00533f70 Thomas Gleixner 2020-02-25 446 *
cfa82a00533f70 Thomas Gleixner 2020-02-25 447 * If the entry comes from user space it uses the normal entry path
cfa82a00533f70 Thomas Gleixner 2020-02-25 448 * including the return to user space work and preemption checks on
cfa82a00533f70 Thomas Gleixner 2020-02-25 449 * exit.
cfa82a00533f70 Thomas Gleixner 2020-02-25 450 *
cfa82a00533f70 Thomas Gleixner 2020-02-25 451 * If hits in kernel mode then it needs to go through the paranoid
cfa82a00533f70 Thomas Gleixner 2020-02-25 452 * entry as the exception can hit any random state. No preemption
cfa82a00533f70 Thomas Gleixner 2020-02-25 453 * check on exit to keep the paranoid path simple.
cfa82a00533f70 Thomas Gleixner 2020-02-25 454 */
cfa82a00533f70 Thomas Gleixner 2020-02-25 455 .macro idtentry_mce_db vector asmsym cfunc
cfa82a00533f70 Thomas Gleixner 2020-02-25 456 SYM_CODE_START(\asmsym)
cfa82a00533f70 Thomas Gleixner 2020-02-25 457 UNWIND_HINT_IRET_REGS
8f93402b92d443 Peter Zijlstra 2022-03-08 458 ENDBR
cfa82a00533f70 Thomas Gleixner 2020-02-25 459 ASM_CLAC
c64cc2802a784e Lai Jiangshan 2022-04-21 460 cld
cfa82a00533f70 Thomas Gleixner 2020-02-25 461
cfa82a00533f70 Thomas Gleixner 2020-02-25 462 pushq $-1 /* ORIG_RAX: no syscall to restart */
cfa82a00533f70 Thomas Gleixner 2020-02-25 463
cfa82a00533f70 Thomas Gleixner 2020-02-25 464 /*
cfa82a00533f70 Thomas Gleixner 2020-02-25 465 * If the entry is from userspace, switch stacks and treat it as
cfa82a00533f70 Thomas Gleixner 2020-02-25 466 * a normal entry.
cfa82a00533f70 Thomas Gleixner 2020-02-25 467 */
cfa82a00533f70 Thomas Gleixner 2020-02-25 468 testb $3, CS-ORIG_RAX(%rsp)
cfa82a00533f70 Thomas Gleixner 2020-02-25 469 jnz .Lfrom_usermode_switch_stack_\@
cfa82a00533f70 Thomas Gleixner 2020-02-25 470
c82965f9e53005 Chang S. Bae 2020-05-28 471 /* paranoid_entry returns GS information for paranoid_exit in EBX. */
cfa82a00533f70 Thomas Gleixner 2020-02-25 472 call paranoid_entry
cfa82a00533f70 Thomas Gleixner 2020-02-25 473
cfa82a00533f70 Thomas Gleixner 2020-02-25 474 UNWIND_HINT_REGS
cfa82a00533f70 Thomas Gleixner 2020-02-25 475
cfa82a00533f70 Thomas Gleixner 2020-02-25 476 movq %rsp, %rdi /* pt_regs pointer */
cfa82a00533f70 Thomas Gleixner 2020-02-25 477
cfa82a00533f70 Thomas Gleixner 2020-02-25 478 call \cfunc
cfa82a00533f70 Thomas Gleixner 2020-02-25 479
cfa82a00533f70 Thomas Gleixner 2020-02-25 480 jmp paranoid_exit
cfa82a00533f70 Thomas Gleixner 2020-02-25 481
cfa82a00533f70 Thomas Gleixner 2020-02-25 482 /* Switch to the regular task stack and use the noist entry point */
cfa82a00533f70 Thomas Gleixner 2020-02-25 483 .Lfrom_usermode_switch_stack_\@:
e2dcb5f1390715 Thomas Gleixner 2020-05-21 484 idtentry_body noist_\cfunc, has_error_code=0
cfa82a00533f70 Thomas Gleixner 2020-02-25 485
:::::: The code at line 444 was first introduced by commit
:::::: cfa82a00533f7074011a3a49fbb6ed1b1f6fa010 x86/entry: Distangle idtentry
:::::: TO: Thomas Gleixner <tglx@linutronix.de>
:::::: CC: Thomas Gleixner <tglx@linutronix.de>
--
0-DAY CI Kernel Test Service
https://github.com/intel/lkp-tests
reply other threads:[~2023-02-10 14:57 UTC|newest]
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