From: kbuild test robot <lkp@intel.com>
To: Petr Mladek <pmladek@suse.com>
Cc: kbuild-all@lists.01.org, Jiri Kosina <jikos@kernel.org>,
Josh Poimboeuf <jpoimboe@redhat.com>,
Miroslav Benes <mbenes@suse.cz>,
Joe Lawrence <joe.lawrence@redhat.com>,
Kamalesh Babulal <kamalesh@linux.vnet.ibm.com>,
Nicolai Stange <nstange@suse.de>,
live-patching@vger.kernel.org, linux-kernel@vger.kernel.org,
Petr Mladek <pmladek@suse.com>
Subject: Re: [POC 20/23] module/livepatch: Relocate local variables in the module loaded when the livepatch is being loaded
Date: Sat, 18 Jan 2020 18:29:16 +0800 [thread overview]
Message-ID: <202001181805.XI99gepc%lkp@intel.com> (raw)
In-Reply-To: <20200117150323.21801-21-pmladek@suse.com>
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Hi Petr,
I love your patch! Yet something to improve:
[auto build test ERROR on jeyu/modules-next]
[also build test ERROR on kselftest/next tip/x86/core linus/master v5.5-rc6 next-20200117]
[if your patch is applied to the wrong git tree, please drop us a note to help
improve the system. BTW, we also suggest to use '--base' option to specify the
base tree in git format-patch, please see https://stackoverflow.com/a/37406982]
url: https://github.com/0day-ci/linux/commits/Petr-Mladek/livepatch-Split-livepatch-module-per-object/20200118-090135
base: https://git.kernel.org/pub/scm/linux/kernel/git/jeyu/linux.git modules-next
config: mips-32r2_defconfig (attached as .config)
compiler: mips-linux-gcc (GCC) 7.5.0
reproduce:
wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross
chmod +x ~/bin/make.cross
# save the attached .config to linux build tree
GCC_VERSION=7.5.0 make.cross ARCH=mips
If you fix the issue, kindly add following tag
Reported-by: kbuild test robot <lkp@intel.com>
All errors (new ones prefixed by >>):
kernel/module.c: In function 'apply_relocations':
>> kernel/module.c:2418:10: error: implicit declaration of function 'klp_resolve_symbols'; did you mean 'resolve_symbol'? [-Werror=implicit-function-declaration]
err = klp_resolve_symbols(info->sechdrs, i, mod);
^~~~~~~~~~~~~~~~~~~
resolve_symbol
cc1: some warnings being treated as errors
vim +2418 kernel/module.c
2398
2399 static int apply_relocations(struct module *mod, const struct load_info *info)
2400 {
2401 unsigned int i;
2402 int err = 0;
2403
2404 /* Now do relocations. */
2405 for (i = 1; i < info->hdr->e_shnum; i++) {
2406 unsigned int infosec = info->sechdrs[i].sh_info;
2407
2408 /* Not a valid relocation section? */
2409 if (infosec >= info->hdr->e_shnum)
2410 continue;
2411
2412 /* Don't bother with non-allocated sections */
2413 if (!(info->sechdrs[infosec].sh_flags & SHF_ALLOC))
2414 continue;
2415
2416 /* Livepatch need to resolve static symbols. */
2417 if (info->sechdrs[i].sh_flags & SHF_RELA_LIVEPATCH) {
> 2418 err = klp_resolve_symbols(info->sechdrs, i, mod);
2419 if (err < 0)
2420 break;
2421 err = apply_relocate_add(info->sechdrs, info->strtab,
2422 info->index.sym, i, mod);
2423 } else if (info->sechdrs[i].sh_type == SHT_REL) {
2424 err = apply_relocate(info->sechdrs, info->strtab,
2425 info->index.sym, i, mod);
2426 } else if (info->sechdrs[i].sh_type == SHT_RELA) {
2427 err = apply_relocate_add(info->sechdrs, info->strtab,
2428 info->index.sym, i, mod);
2429 }
2430 if (err < 0)
2431 break;
2432 }
2433 return err;
2434 }
2435
---
0-DAY kernel test infrastructure Open Source Technology Center
https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org Intel Corporation
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next prev parent reply other threads:[~2020-01-18 10:30 UTC|newest]
Thread overview: 38+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-01-17 15:03 [POC 00/23] livepatch: Split livepatch module per-object Petr Mladek
2020-01-17 15:03 ` [POC 01/23] module: Allow to delete module also from inside kernel Petr Mladek
2020-01-21 11:11 ` Julien Thierry
2020-01-17 15:03 ` [POC 02/23] livepatch: Split livepatch modules per livepatched object Petr Mladek
2020-01-21 11:11 ` Julien Thierry
2020-01-28 12:16 ` Petr Mladek
2020-01-17 15:03 ` [POC 03/23] livepatch: Better checks of struct klp_object definition Petr Mladek
2020-01-21 11:27 ` Julien Thierry
2020-01-17 15:03 ` [POC 04/23] livepatch: Prevent loading livepatch sub-module unintentionally Petr Mladek
2020-04-03 17:54 ` Joe Lawrence
2020-01-17 15:03 ` [POC 05/23] livepatch: Initialize and free livepatch submodule Petr Mladek
2020-01-21 11:58 ` Julien Thierry
2020-01-17 15:03 ` [POC 06/23] livepatch: Enable the " Petr Mladek
2020-01-17 15:03 ` [POC 07/23] livepatch: Remove obsolete functionality from klp_module_coming() Petr Mladek
2020-01-17 15:03 ` [POC 08/23] livepatch: Automatically load livepatch module when the patch module is loaded Petr Mladek
2020-01-17 15:03 ` [POC 09/23] livepatch: Handle race when livepatches are reloaded during a module load Petr Mladek
2020-01-22 18:51 ` Julien Thierry
2020-01-17 15:03 ` [POC 10/23] livepatch: Handle modprobe exit code Petr Mladek
2020-01-17 15:03 ` [POC 11/23] livepatch: Safely detect forced transition when removing split livepatch modules Petr Mladek
2020-01-22 10:15 ` Julien Thierry
2020-01-17 15:03 ` [POC 12/23] livepatch: Automatically remove livepatch module when the object is freed Petr Mladek
2020-01-17 15:03 ` [POC 13/23] livepatch: Remove livepatch module when the livepatched module is unloaded Petr Mladek
2020-01-17 15:03 ` [POC 14/23] livepatch: Never block livepatch modules when the related module is being removed Petr Mladek
2020-01-17 15:03 ` [POC 15/23] livepatch: Prevent infinite loop when loading livepatch module Petr Mladek
2020-01-17 15:03 ` [POC 16/23] livepatch: Add patch into the global list early Petr Mladek
2020-01-17 15:03 ` [POC 17/23] livepatch: Load livepatches for modules when loading the main livepatch Petr Mladek
2020-01-17 15:03 ` [POC 18/23] module: Refactor add_unformed_module() Petr Mladek
2020-01-17 15:03 ` [POC 19/23] module/livepatch: Allow to use exported symbols from livepatch module for "vmlinux" Petr Mladek
2020-04-06 18:48 ` Joe Lawrence
2020-04-07 7:33 ` Miroslav Benes
2020-04-07 20:57 ` Joe Lawrence
2020-01-17 15:03 ` [POC 20/23] module/livepatch: Relocate local variables in the module loaded when the livepatch is being loaded Petr Mladek
2020-01-18 10:29 ` kbuild test robot [this message]
2020-04-03 18:00 ` Joe Lawrence
2020-01-17 15:03 ` [POC 21/23] livepatch: Remove obsolete arch_klp_init_object_loaded() Petr Mladek
2020-01-17 15:03 ` [POC 22/23] livepatch/module: Remove obsolete copy_module_elf() Petr Mladek
2020-04-03 18:03 ` Joe Lawrence
2020-01-17 15:03 ` [POC 23/23] module: Remove obsolete module_disable_ro() Petr Mladek
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