* Re: [PATCH WIP] x86/kgdb: trampolines for shadowed instructions
[not found] <20240814085141.171564-1-mail@florommel.de>
@ 2024-08-15 19:51 ` kernel test robot
2024-08-16 11:12 ` kernel test robot
1 sibling, 0 replies; 2+ messages in thread
From: kernel test robot @ 2024-08-15 19:51 UTC (permalink / raw)
To: Florian Rommel, Thomas Gleixner, Daniel Thompson
Cc: oe-kbuild-all, Ingo Molnar, Borislav Petkov, Dave Hansen,
H . Peter Anvin, Jason Wessel, Douglas Anderson,
Lorena Kretzschmar, Stefan Saecherl, Peter Zijlstra,
Christophe JAILLET, Randy Dunlap, Masami Hiramatsu,
Andrew Morton, Linux Memory Management List, Christophe Leroy,
Geert Uytterhoeven, kgdb-bugreport, x86, linux-kernel, Kees Cook,
Florian Rommel
Hi Florian,
kernel test robot noticed the following build errors:
[auto build test ERROR on tip/master]
[also build test ERROR on tip/x86/core linus/master v6.11-rc3 next-20240815]
[If your patch is applied to the wrong git tree, kindly drop us a note.
And when submitting patch, we suggest to use '--base' as documented in
https://git-scm.com/docs/git-format-patch#_base_tree_information]
url: https://github.com/intel-lab-lkp/linux/commits/Florian-Rommel/x86-kgdb-trampolines-for-shadowed-instructions/20240814-230936
base: tip/master
patch link: https://lore.kernel.org/r/20240814085141.171564-1-mail%40florommel.de
patch subject: [PATCH WIP] x86/kgdb: trampolines for shadowed instructions
config: x86_64-buildonly-randconfig-004-20240815 (https://download.01.org/0day-ci/archive/20240816/202408160303.FvgjFUth-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/20240816/202408160303.FvgjFUth-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/202408160303.FvgjFUth-lkp@intel.com/
All errors (new ones prefixed by >>):
ld: vmlinux.o: in function `kgdb_arch_init':
>> arch/x86/kernel/kgdb.c:416: undefined reference to `execmem_alloc'
vim +416 arch/x86/kernel/kgdb.c
410
411 static int kgdb_init_trampolines(void)
412 {
413 /* FIXME: We should reserve enough space for all breakpoints
414 or make the trampoline table dynamic somehow.. */
415 /* FIXME: Currently borrowing EXECMEM_KPROBES */
> 416 kgdb_trampoline_page = execmem_alloc(EXECMEM_KPROBES, PAGE_SIZE);
417 if (!kgdb_trampoline_page)
418 return 1;
419 memset(kgdb_trampoline_page, INT3_INSN_OPCODE, PAGE_SIZE);
420 set_memory_rox((unsigned long)kgdb_trampoline_page, 1);
421 kgdb_trampoline_page_curr_slot = kgdb_trampoline_page;
422 return 0;
423 }
424
--
0-DAY CI Kernel Test Service
https://github.com/intel/lkp-tests/wiki
^ permalink raw reply [flat|nested] 2+ messages in thread* Re: [PATCH WIP] x86/kgdb: trampolines for shadowed instructions
[not found] <20240814085141.171564-1-mail@florommel.de>
2024-08-15 19:51 ` [PATCH WIP] x86/kgdb: trampolines for shadowed instructions kernel test robot
@ 2024-08-16 11:12 ` kernel test robot
1 sibling, 0 replies; 2+ messages in thread
From: kernel test robot @ 2024-08-16 11:12 UTC (permalink / raw)
To: Florian Rommel, Thomas Gleixner, Daniel Thompson
Cc: llvm, oe-kbuild-all, Ingo Molnar, Borislav Petkov, Dave Hansen,
H . Peter Anvin, Jason Wessel, Douglas Anderson,
Lorena Kretzschmar, Stefan Saecherl, Peter Zijlstra,
Christophe JAILLET, Randy Dunlap, Masami Hiramatsu,
Andrew Morton, Linux Memory Management List, Christophe Leroy,
Geert Uytterhoeven, kgdb-bugreport, x86, linux-kernel, Kees Cook,
Florian Rommel
Hi Florian,
kernel test robot noticed the following build errors:
[auto build test ERROR on tip/master]
[also build test ERROR on tip/x86/core linus/master v6.11-rc3 next-20240816]
[If your patch is applied to the wrong git tree, kindly drop us a note.
And when submitting patch, we suggest to use '--base' as documented in
https://git-scm.com/docs/git-format-patch#_base_tree_information]
url: https://github.com/intel-lab-lkp/linux/commits/Florian-Rommel/x86-kgdb-trampolines-for-shadowed-instructions/20240814-230936
base: tip/master
patch link: https://lore.kernel.org/r/20240814085141.171564-1-mail%40florommel.de
patch subject: [PATCH WIP] x86/kgdb: trampolines for shadowed instructions
config: x86_64-buildonly-randconfig-004-20240816 (https://download.01.org/0day-ci/archive/20240816/202408162013.3Nz53QCv-lkp@intel.com/config)
compiler: clang version 18.1.5 (https://github.com/llvm/llvm-project 617a15a9eac96088ae5e9134248d8236e34b91b1)
reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20240816/202408162013.3Nz53QCv-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/202408162013.3Nz53QCv-lkp@intel.com/
All errors (new ones prefixed by >>):
>> ld.lld: error: undefined symbol: execmem_alloc
>>> referenced by usercopy_64.c
>>> vmlinux.o:(kgdb_arch_init)
--
0-DAY CI Kernel Test Service
https://github.com/intel/lkp-tests/wiki
^ permalink raw reply [flat|nested] 2+ messages in thread