tree: https://git.kernel.org/pub/scm/linux/kernel/git/luto/linux.git x86/entry head: 740d9ec95803da77586b79bbbe98a5c7f3612388 commit: dfff54208072a27909ae97ebce644c251a233ff2 [5/11] x86/entry: Use the high bits of regs->cs to store the entry type config: x86_64-rhel (attached as .config) compiler: gcc-9 (Debian 9.3.0-13) 9.3.0 reproduce (this is a W=1 build): git checkout dfff54208072a27909ae97ebce644c251a233ff2 # save the attached .config to linux build tree make W=1 ARCH=x86_64 If you fix the issue, kindly add following tag as appropriate Reported-by: kernel test robot <lkp(a)intel.com&gt; All errors (new ones prefixed by >>, old ones prefixed by <<): ld: arch/x86/kernel/ftrace_64.o: in function `ftrace_caller': ld: arch/x86/kernel/ftrace_64.S:153: undefined reference to `RBP' ld: arch/x86/kernel/ftrace_64.S:153: undefined reference to `R9' ld: arch/x86/kernel/ftrace_64.S:153: undefined reference to `R8' ld: arch/x86/kernel/ftrace_64.S:153: undefined reference to `RDI' ld: arch/x86/kernel/ftrace_64.S:153: undefined reference to `RSI' ld: arch/x86/kernel/ftrace_64.S:153: undefined reference to `RDX' ld: arch/x86/kernel/ftrace_64.S:153: undefined reference to `RCX' ld: arch/x86/kernel/ftrace_64.S:153: undefined reference to `RAX' ld: arch/x86/kernel/ftrace_64.S:153: undefined reference to `FRAME_SIZE' ld: arch/x86/kernel/ftrace_64.o: in function `ftrace_regs_caller': arch/x86/kernel/ftrace_64.S:184: undefined reference to `FRAME_SIZE' ld: arch/x86/kernel/ftrace_64.S:184: undefined reference to `RAX' ld: arch/x86/kernel/ftrace_64.S:184: undefined reference to `RCX' ld: arch/x86/kernel/ftrace_64.S:184: undefined reference to `RDX' ld: arch/x86/kernel/ftrace_64.S:184: undefined reference to `RSI' ld: arch/x86/kernel/ftrace_64.S:184: undefined reference to `RDI' ld: arch/x86/kernel/ftrace_64.S:184: undefined reference to `R8' ld: arch/x86/kernel/ftrace_64.S:184: undefined reference to `R9' ld: arch/x86/kernel/ftrace_64.S:184: undefined reference to `ORIG_RAX' ld: arch/x86/kernel/ftrace_64.S:184: undefined reference to `RBP' ld: arch/x86/kernel/ftrace_64.S:184: undefined reference to `FRAME_SIZE' ld: arch/x86/kernel/ftrace_64.S:184: undefined reference to `FRAME_SIZE' ld: arch/x86/kernel/ftrace_64.S:184: undefined reference to `RIP' ld: arch/x86/kernel/ftrace_64.S:200: undefined reference to `FRAME_SIZE' ld: arch/x86/kernel/ftrace_64.S:201: undefined reference to `EFLAGS' ld: arch/x86/kernel/ftrace_64.S:203: undefined reference to `__KERNEL_DS' ld: arch/x86/kernel/ftrace_64.S:204: undefined reference to `SS' ld: arch/x86/kernel/ftrace_64.S:205: undefined reference to `__KERNEL_CS' ld: arch/x86/kernel/ftrace_64.S:206: undefined reference to `CS' ld: arch/x86/kernel/ftrace_64.S:208: undefined reference to `FRAME_SIZE' ld: arch/x86/kernel/ftrace_64.S:209: undefined reference to `RSP' ld: arch/x86/kernel/ftrace_64.S:220: undefined reference to `EFLAGS' ld: arch/x86/kernel/ftrace_64.S:221: undefined reference to `FRAME_SIZE' ld: arch/x86/kernel/ftrace_64.S:224: undefined reference to `RIP' ld: arch/x86/kernel/ftrace_64.S:225: undefined reference to `FRAME_SIZE' ld: arch/x86/kernel/ftrace_64.S:228: undefined reference to `R15' ld: arch/x86/kernel/ftrace_64.S:229: undefined reference to `R14' ld: arch/x86/kernel/ftrace_64.S:230: undefined reference to `R13' ld: arch/x86/kernel/ftrace_64.S:231: undefined reference to `R12' ld: arch/x86/kernel/ftrace_64.S:232: undefined reference to `R10' ld: arch/x86/kernel/ftrace_64.S:233: undefined reference to `RBX' ld: arch/x86/kernel/ftrace_64.S:235: undefined reference to `ORIG_RAX' ld: arch/x86/kernel/ftrace_64.S:236: undefined reference to `FRAME_SIZE' ld: arch/x86/kernel/ftrace_64.S:242: undefined reference to `ORIG_RAX' ld: arch/x86/kernel/ftrace_64.S:247: undefined reference to `FRAME_SIZE' ld: arch/x86/kernel/ftrace_64.S:248: undefined reference to `FRAME_SIZE' ld: arch/x86/kernel/ftrace_64.S:249: undefined reference to `FRAME_SIZE' ld: arch/x86/kernel/ftrace_64.S:251: undefined reference to `RBP' ld: arch/x86/kernel/ftrace_64.S:251: undefined reference to `R9' ld: arch/x86/kernel/ftrace_64.S:251: undefined reference to `R8' ld: arch/x86/kernel/ftrace_64.S:251: undefined reference to `RDI' ld: arch/x86/kernel/ftrace_64.S:251: undefined reference to `RSI' ld: arch/x86/kernel/ftrace_64.S:251: undefined reference to `RDX' ld: arch/x86/kernel/ftrace_64.S:251: undefined reference to `RCX' ld: arch/x86/kernel/ftrace_64.S:251: undefined reference to `RAX' ld: arch/x86/kernel/ftrace_64.S:251: undefined reference to `FRAME_SIZE' ld: arch/x86/kernel/ftrace_64.S:259: undefined reference to `RBP' ld: arch/x86/kernel/ftrace_64.S:259: undefined reference to `R9' ld: arch/x86/kernel/ftrace_64.S:259: undefined reference to `R8' ld: arch/x86/kernel/ftrace_64.S:259: undefined reference to `RDI' ld: arch/x86/kernel/ftrace_64.S:259: undefined reference to `RSI' ld: arch/x86/kernel/ftrace_64.S:259: undefined reference to `RDX' ld: arch/x86/kernel/ftrace_64.S:259: undefined reference to `RCX' ld: arch/x86/kernel/ftrace_64.S:259: undefined reference to `RAX' ld: arch/x86/kernel/ftrace_64.S:259: undefined reference to `FRAME_SIZE' ld: arch/x86/kernel/ftrace_64.o: in function `ftrace_graph_caller': arch/x86/kernel/ftrace_64.S:315: undefined reference to `FRAME_SIZE' ld: arch/x86/kernel/ftrace_64.S:315: undefined reference to `RAX' ld: arch/x86/kernel/ftrace_64.S:315: undefined reference to `RCX' ld: arch/x86/kernel/ftrace_64.S:315: undefined reference to `RDX' ld: arch/x86/kernel/ftrace_64.S:315: undefined reference to `RSI' ld: arch/x86/kernel/ftrace_64.S:315: undefined reference to `RDI' ld: arch/x86/kernel/ftrace_64.S:315: undefined reference to `R8' ld: arch/x86/kernel/ftrace_64.S:315: undefined reference to `R9' ld: arch/x86/kernel/ftrace_64.S:315: undefined reference to `ORIG_RAX' ld: arch/x86/kernel/ftrace_64.S:315: undefined reference to `RBP' ld: arch/x86/kernel/ftrace_64.S:315: undefined reference to `FRAME_SIZE' ld: arch/x86/kernel/ftrace_64.S:315: undefined reference to `FRAME_SIZE' ld: arch/x86/kernel/ftrace_64.S:315: undefined reference to `RIP' ld: arch/x86/kernel/ftrace_64.S:317: undefined reference to `FRAME_SIZE' ld: arch/x86/kernel/ftrace_64.S:321: undefined reference to `RBP' ld: arch/x86/kernel/ftrace_64.S:321: undefined reference to `R9' ld: arch/x86/kernel/ftrace_64.S:321: undefined reference to `R8' ld: arch/x86/kernel/ftrace_64.S:321: undefined reference to `RDI' ld: arch/x86/kernel/ftrace_64.S:321: undefined reference to `RSI' ld: arch/x86/kernel/ftrace_64.S:321: undefined reference to `RDX' ld: arch/x86/kernel/ftrace_64.S:321: undefined reference to `RCX' ld: arch/x86/kernel/ftrace_64.S:321: undefined reference to `RAX' ld: arch/x86/kernel/ftrace_64.S:321: undefined reference to `FRAME_SIZE' vim +141 arch/x86/kernel/ftrace_64.S 76c2f13c551597 arch/x86/kernel/mcount_64.S Steven Rostedt (Red Hat 2014-11-24 138) 6dcc5627f6aec4 arch/x86/kernel/ftrace_64.S Jiri Slaby 2019-10-11 139 SYM_FUNC_START(ftrace_caller) f1ab00af816ec8 arch/x86/kernel/mcount_64.S Steven Rostedt (Red Hat 2014-11-24 140) /* save_mcount_regs fills in first two parameters */ f1ab00af816ec8 arch/x86/kernel/mcount_64.S Steven Rostedt (Red Hat 2014-11-24 @141) save_mcount_regs f1ab00af816ec8 arch/x86/kernel/mcount_64.S Steven Rostedt (Red Hat 2014-11-24 142) 26ba4e5738a544 arch/x86/kernel/ftrace_64.S Jiri Slaby 2019-10-11 143 SYM_INNER_LABEL(ftrace_caller_op_ptr, SYM_L_GLOBAL) f1ab00af816ec8 arch/x86/kernel/mcount_64.S Steven Rostedt (Red Hat 2014-11-24 144) /* Load the ftrace_ops into the 3rd parameter */ f1ab00af816ec8 arch/x86/kernel/mcount_64.S Steven Rostedt (Red Hat 2014-11-24 145) movq function_trace_op(%rip), %rdx f1ab00af816ec8 arch/x86/kernel/mcount_64.S Steven Rostedt (Red Hat 2014-11-24 146) e18eead3c3e008 arch/x86/kernel/mcount_64.S Steven Rostedt 2014-05-08 147 /* regs go into 4th parameter (but make it NULL) */ e18eead3c3e008 arch/x86/kernel/mcount_64.S Steven Rostedt 2014-05-08 148 movq $0, %rcx e18eead3c3e008 arch/x86/kernel/mcount_64.S Steven Rostedt 2014-05-08 149 26ba4e5738a544 arch/x86/kernel/ftrace_64.S Jiri Slaby 2019-10-11 150 SYM_INNER_LABEL(ftrace_call, SYM_L_GLOBAL) e18eead3c3e008 arch/x86/kernel/mcount_64.S Steven Rostedt 2014-05-08 151 call ftrace_stub e18eead3c3e008 arch/x86/kernel/mcount_64.S Steven Rostedt 2014-05-08 152 05df710ec343cf arch/x86/kernel/mcount_64.S Steven Rostedt (Red Hat 2014-11-24 153) restore_mcount_regs f3bea49115b21e arch/x86/kernel/mcount_64.S Steven Rostedt (Red Hat 2014-07-02 154) f3bea49115b21e arch/x86/kernel/mcount_64.S Steven Rostedt (Red Hat 2014-07-02 155) /* f1b92bb6b5a4e1 arch/x86/kernel/mcount_64.S Borislav Petkov 2016-02-16 156 * The code up to this label is copied into trampolines so f1b92bb6b5a4e1 arch/x86/kernel/mcount_64.S Borislav Petkov 2016-02-16 157 * think twice before adding any new code or changing the f1b92bb6b5a4e1 arch/x86/kernel/mcount_64.S Borislav Petkov 2016-02-16 158 * layout here. f3bea49115b21e arch/x86/kernel/mcount_64.S Steven Rostedt (Red Hat 2014-07-02 159) */ 0298739b7983cf arch/x86/kernel/ftrace_64.S Peter Zijlstra 2020-04-01 160 SYM_INNER_LABEL(ftrace_caller_end, SYM_L_GLOBAL) e18eead3c3e008 arch/x86/kernel/mcount_64.S Steven Rostedt 2014-05-08 161 0298739b7983cf arch/x86/kernel/ftrace_64.S Peter Zijlstra 2020-04-01 162 jmp ftrace_epilogue 0298739b7983cf arch/x86/kernel/ftrace_64.S Peter Zijlstra 2020-04-01 163 SYM_FUNC_END(ftrace_caller); 0298739b7983cf arch/x86/kernel/ftrace_64.S Peter Zijlstra 2020-04-01 164 0298739b7983cf arch/x86/kernel/ftrace_64.S Peter Zijlstra 2020-04-01 165 SYM_FUNC_START(ftrace_epilogue) e18eead3c3e008 arch/x86/kernel/mcount_64.S Steven Rostedt 2014-05-08 166 #ifdef CONFIG_FUNCTION_GRAPH_TRACER 26ba4e5738a544 arch/x86/kernel/ftrace_64.S Jiri Slaby 2019-10-11 167 SYM_INNER_LABEL(ftrace_graph_call, SYM_L_GLOBAL) e18eead3c3e008 arch/x86/kernel/mcount_64.S Steven Rostedt 2014-05-08 168 jmp ftrace_stub e18eead3c3e008 arch/x86/kernel/mcount_64.S Steven Rostedt 2014-05-08 169 #endif e18eead3c3e008 arch/x86/kernel/mcount_64.S Steven Rostedt 2014-05-08 170 d2a68c4effd821 arch/x86/kernel/ftrace_64.S Steven Rostedt (VMware 2018-12-08 171) /* d2a68c4effd821 arch/x86/kernel/ftrace_64.S Steven Rostedt (VMware 2018-12-08 172) * This is weak to keep gas from relaxing the jumps. d2a68c4effd821 arch/x86/kernel/ftrace_64.S Steven Rostedt (VMware 2018-12-08 173) * It is also used to copy the retq for trampolines. d2a68c4effd821 arch/x86/kernel/ftrace_64.S Steven Rostedt (VMware 2018-12-08 174) */ 13fbe784ef6e58 arch/x86/kernel/ftrace_64.S Jiri Slaby 2019-10-11 175 SYM_INNER_LABEL_ALIGN(ftrace_stub, SYM_L_WEAK) e18eead3c3e008 arch/x86/kernel/mcount_64.S Steven Rostedt 2014-05-08 176 retq 0298739b7983cf arch/x86/kernel/ftrace_64.S Peter Zijlstra 2020-04-01 177 SYM_FUNC_END(ftrace_epilogue) e18eead3c3e008 arch/x86/kernel/mcount_64.S Steven Rostedt 2014-05-08 178 6dcc5627f6aec4 arch/x86/kernel/ftrace_64.S Jiri Slaby 2019-10-11 179 SYM_FUNC_START(ftrace_regs_caller) 527aa75b333f90 arch/x86/kernel/mcount_64.S Steven Rostedt (Red Hat 2014-11-24 180) /* Save the current flags before any operations that can change them */ e18eead3c3e008 arch/x86/kernel/mcount_64.S Steven Rostedt 2014-05-08 181 pushfq e18eead3c3e008 arch/x86/kernel/mcount_64.S Steven Rostedt 2014-05-08 182 527aa75b333f90 arch/x86/kernel/mcount_64.S Steven Rostedt (Red Hat 2014-11-24 183) /* added 8 bytes to save flags */ f1ab00af816ec8 arch/x86/kernel/mcount_64.S Steven Rostedt (Red Hat 2014-11-24 @184) save_mcount_regs 8 f1ab00af816ec8 arch/x86/kernel/mcount_64.S Steven Rostedt (Red Hat 2014-11-24 185) /* save_mcount_regs fills in first two parameters */ f1ab00af816ec8 arch/x86/kernel/mcount_64.S Steven Rostedt (Red Hat 2014-11-24 186) 26ba4e5738a544 arch/x86/kernel/ftrace_64.S Jiri Slaby 2019-10-11 187 SYM_INNER_LABEL(ftrace_regs_caller_op_ptr, SYM_L_GLOBAL) f1ab00af816ec8 arch/x86/kernel/mcount_64.S Steven Rostedt (Red Hat 2014-11-24 188) /* Load the ftrace_ops into the 3rd parameter */ f1ab00af816ec8 arch/x86/kernel/mcount_64.S Steven Rostedt (Red Hat 2014-11-24 189) movq function_trace_op(%rip), %rdx e18eead3c3e008 arch/x86/kernel/mcount_64.S Steven Rostedt 2014-05-08 190 e18eead3c3e008 arch/x86/kernel/mcount_64.S Steven Rostedt 2014-05-08 191 /* Save the rest of pt_regs */ e18eead3c3e008 arch/x86/kernel/mcount_64.S Steven Rostedt 2014-05-08 @192 movq %r15, R15(%rsp) e18eead3c3e008 arch/x86/kernel/mcount_64.S Steven Rostedt 2014-05-08 @193 movq %r14, R14(%rsp) e18eead3c3e008 arch/x86/kernel/mcount_64.S Steven Rostedt 2014-05-08 @194 movq %r13, R13(%rsp) e18eead3c3e008 arch/x86/kernel/mcount_64.S Steven Rostedt 2014-05-08 @195 movq %r12, R12(%rsp) e18eead3c3e008 arch/x86/kernel/mcount_64.S Steven Rostedt 2014-05-08 @196 movq %r11, R11(%rsp) e18eead3c3e008 arch/x86/kernel/mcount_64.S Steven Rostedt 2014-05-08 @197 movq %r10, R10(%rsp) e18eead3c3e008 arch/x86/kernel/mcount_64.S Steven Rostedt 2014-05-08 @198 movq %rbx, RBX(%rsp) e18eead3c3e008 arch/x86/kernel/mcount_64.S Steven Rostedt 2014-05-08 199 /* Copy saved flags */ 85f6f0290c4d46 arch/x86/kernel/mcount_64.S Steven Rostedt (Red Hat 2014-11-24 200) movq MCOUNT_REG_SIZE(%rsp), %rcx e18eead3c3e008 arch/x86/kernel/mcount_64.S Steven Rostedt 2014-05-08 @201 movq %rcx, EFLAGS(%rsp) e18eead3c3e008 arch/x86/kernel/mcount_64.S Steven Rostedt 2014-05-08 202 /* Kernel segments */ e18eead3c3e008 arch/x86/kernel/mcount_64.S Steven Rostedt 2014-05-08 @203 movq $__KERNEL_DS, %rcx e18eead3c3e008 arch/x86/kernel/mcount_64.S Steven Rostedt 2014-05-08 @204 movq %rcx, SS(%rsp) e18eead3c3e008 arch/x86/kernel/mcount_64.S Steven Rostedt 2014-05-08 @205 movq $__KERNEL_CS, %rcx e18eead3c3e008 arch/x86/kernel/mcount_64.S Steven Rostedt 2014-05-08 @206 movq %rcx, CS(%rsp) 527aa75b333f90 arch/x86/kernel/mcount_64.S Steven Rostedt (Red Hat 2014-11-24 207) /* Stack - skipping return address and flags */ 85f6f0290c4d46 arch/x86/kernel/mcount_64.S Steven Rostedt (Red Hat 2014-11-24 208) leaq MCOUNT_REG_SIZE+8*2(%rsp), %rcx e18eead3c3e008 arch/x86/kernel/mcount_64.S Steven Rostedt 2014-05-08 @209 movq %rcx, RSP(%rsp) e18eead3c3e008 arch/x86/kernel/mcount_64.S Steven Rostedt 2014-05-08 210 ea1ed38dba64b6 arch/x86/kernel/ftrace_64.S Peter Zijlstra 2019-05-07 211 ENCODE_FRAME_POINTER ea1ed38dba64b6 arch/x86/kernel/ftrace_64.S Peter Zijlstra 2019-05-07 212 e18eead3c3e008 arch/x86/kernel/mcount_64.S Steven Rostedt 2014-05-08 213 /* regs go into 4th parameter */ e18eead3c3e008 arch/x86/kernel/mcount_64.S Steven Rostedt 2014-05-08 214 leaq (%rsp), %rcx e18eead3c3e008 arch/x86/kernel/mcount_64.S Steven Rostedt 2014-05-08 215 :::::: The code at line 141 was first introduced by commit :::::: f1ab00af816ec8e1ad53229963c863fdd6bcf222 ftrace/x86: Get rid of ftrace_caller_setup :::::: TO: Steven Rostedt (Red Hat) <rostedt(a)goodmis.org&gt; :::::: CC: Steven Rostedt <rostedt(a)goodmis.org&gt; --- 0-DAY CI Kernel Test Service, Intel Corporation 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