linux-kernel - [tglx-devel:depthtracking 31/38] arch/x86/entry/entry_32.S:708: Error: no such instruction: `call_thunks_debug_inc

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Message-ID: <202207141806.sAnxdROf-lkp@intel.com>
Date:   Thu, 14 Jul 2022 19:02:53 +0800
From:   kernel test robot <lkp@...el.com>
To:     Thomas Gleixner <tglx@...utronix.de>
Cc:     kbuild-all@...ts.01.org, linux-kernel@...r.kernel.org
Subject: [tglx-devel:depthtracking 31/38] arch/x86/entry/entry_32.S:708:
 Error: no such instruction: `call_thunks_debug_inc_ctxsw'

tree:   https://git.kernel.org/pub/scm/linux/kernel/git/tglx/devel.git depthtracking
head:   81d2c1b17a61bfeca4b92a5d6e1fb6f5ff464826
commit: 2732d9924d0ab04682c6cbc252e688e3e54b7847 [31/38] x86/calldepth: Add ret/call counting for debug
config: i386-defconfig
compiler: gcc-11 (Debian 11.3.0-3) 11.3.0
reproduce (this is a W=1 build):
        # https://git.kernel.org/pub/scm/linux/kernel/git/tglx/devel.git/commit/?id=2732d9924d0ab04682c6cbc252e688e3e54b7847
        git remote add tglx-devel https://git.kernel.org/pub/scm/linux/kernel/git/tglx/devel.git
        git fetch --no-tags tglx-devel depthtracking
        git checkout 2732d9924d0ab04682c6cbc252e688e3e54b7847
        # save the config file
        mkdir build_dir && cp config build_dir/.config
        make W=1 O=build_dir ARCH=i386 SHELL=/bin/bash

If you fix the issue, kindly add following tag where applicable
Reported-by: kernel test robot <lkp@...el.com>

All errors (new ones prefixed by >>):

   arch/x86/entry/entry_32.S: Assembler messages:
>> arch/x86/entry/entry_32.S:708: Error: no such instruction: `call_thunks_debug_inc_ctxsw'


vim +708 arch/x86/entry/entry_32.S

0100301bfdf56a Brian Gerst     2016-08-13  700  
c995efd5a740d9 David Woodhouse 2018-01-12  701  	/*
c995efd5a740d9 David Woodhouse 2018-01-12  702  	 * When switching from a shallower to a deeper call stack
c995efd5a740d9 David Woodhouse 2018-01-12  703  	 * the RSB may either underflow or use entries populated
c995efd5a740d9 David Woodhouse 2018-01-12  704  	 * with userspace addresses. On CPUs where those concerns
c995efd5a740d9 David Woodhouse 2018-01-12  705  	 * exist, overwrite the RSB with entries which capture
c995efd5a740d9 David Woodhouse 2018-01-12  706  	 * speculative execution to prevent attack.
c995efd5a740d9 David Woodhouse 2018-01-12  707  	 */
d1c99108af3c59 David Woodhouse 2018-02-19 @708  	FILL_RETURN_BUFFER %ebx, RSB_CLEAR_LOOPS, X86_FEATURE_RSB_CTXSW
c995efd5a740d9 David Woodhouse 2018-01-12  709  
a3ba966066afbe Thomas Gleixner 2019-11-16  710  	/* Restore flags or the incoming task to restore AC state. */
6690e86be83ac7 Peter Zijlstra  2019-02-14  711  	popfl
a3ba966066afbe Thomas Gleixner 2019-11-16  712  	/* restore callee-saved registers */
0100301bfdf56a Brian Gerst     2016-08-13  713  	popl	%esi
0100301bfdf56a Brian Gerst     2016-08-13  714  	popl	%edi
0100301bfdf56a Brian Gerst     2016-08-13  715  	popl	%ebx
0100301bfdf56a Brian Gerst     2016-08-13  716  	popl	%ebp
0100301bfdf56a Brian Gerst     2016-08-13  717  
0100301bfdf56a Brian Gerst     2016-08-13  718  	jmp	__switch_to
5e63306f162952 Jiri Slaby      2019-10-11  719  SYM_CODE_END(__switch_to_asm)
8c0fa8a036cd9c Thomas Gleixner 2020-03-25  720  .popsection
0100301bfdf56a Brian Gerst     2016-08-13  721  

:::::: The code at line 708 was first introduced by commit
:::::: d1c99108af3c5992640aa2afa7d2e88c3775c06e Revert "x86/retpoline: Simplify vmexit_fill_RSB()"

:::::: TO: David Woodhouse <dwmw@...zon.co.uk>
:::::: CC: Ingo Molnar <mingo@...nel.org>

-- 
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https://01.org/lkp

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