* kernel/bpf/btf.c:8758:undefined reference to `btf_kobj'
@ 2026-09-07 9:21 kernel test robot
0 siblings, 0 replies; 2+ messages in thread
From: kernel test robot @ 2026-09-07 9:21 UTC (permalink / raw)
To: oe-kbuild; +Cc: lkp
::::::
:::::: Manual check reason: "low confidence bisect report"
::::::
BCC: lkp@intel.com
CC: oe-kbuild-all@lists.linux.dev
TO: Alan Maguire <alan.maguire@oracle.com>
CC: 0day robot <lkp@intel.com>
tree: https://github.com/intel-lab-lkp/linux/commits/Alan-Maguire/btf-Extend-UAPI-to-support-BTF-location-inline-site-info/20260901-175740
head: 9e05e3a3098276adea1e7277934c60598cde310e
commit: ef28548058e47e9c824316fe339f88dfd00c35aa btf: Make vmlinux, module inline info available in /sys/kernel/btf
date: 6 days ago
:::::: branch date: 6 days ago
:::::: commit date: 6 days ago
config: i386-allnoconfig-bpf (https://download.01.org/0day-ci/archive/20260907/202609071155.KwITLv3v-lkp@intel.com/config)
compiler: gcc-14 (Debian 14.2.0-19) 14.2.0
reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20260907/202609071155.KwITLv3v-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/r/202609071155.KwITLv3v-lkp@intel.com/
All errors (new ones prefixed by >>):
ld: kernel/bpf/btf.o: in function `sysfs_btf_add':
>> kernel/bpf/btf.c:8758:(.text+0x10363): undefined reference to `btf_kobj'
vim +8758 kernel/bpf/btf.c
18688de203b47e5 Kumar Kartikeya Dwivedi 2022-01-14 8737
ef28548058e47e9 Alan Maguire 2026-09-01 8738 #if IS_ENABLED(CONFIG_SYSFS)
ef28548058e47e9 Alan Maguire 2026-09-01 8739 struct bin_attribute *sysfs_btf_add(const char *name, void *data, size_t data_size)
ef28548058e47e9 Alan Maguire 2026-09-01 8740 {
ef28548058e47e9 Alan Maguire 2026-09-01 8741 struct bin_attribute *attr;
ef28548058e47e9 Alan Maguire 2026-09-01 8742 int err;
ef28548058e47e9 Alan Maguire 2026-09-01 8743
ef28548058e47e9 Alan Maguire 2026-09-01 8744 attr = kzalloc_obj(*attr);
ef28548058e47e9 Alan Maguire 2026-09-01 8745 if (!attr)
ef28548058e47e9 Alan Maguire 2026-09-01 8746 return ERR_PTR(-ENOMEM);
ef28548058e47e9 Alan Maguire 2026-09-01 8747
ef28548058e47e9 Alan Maguire 2026-09-01 8748 sysfs_bin_attr_init(attr);
ef28548058e47e9 Alan Maguire 2026-09-01 8749 attr->attr.mode = 0444;
ef28548058e47e9 Alan Maguire 2026-09-01 8750 attr->size = data_size;
ef28548058e47e9 Alan Maguire 2026-09-01 8751 attr->private = data;
ef28548058e47e9 Alan Maguire 2026-09-01 8752 attr->read = sysfs_bin_attr_simple_read;
ef28548058e47e9 Alan Maguire 2026-09-01 8753 attr->attr.name = kstrdup(name, GFP_KERNEL);
ef28548058e47e9 Alan Maguire 2026-09-01 8754 if (!attr->attr.name) {
ef28548058e47e9 Alan Maguire 2026-09-01 8755 err = -ENOMEM;
ef28548058e47e9 Alan Maguire 2026-09-01 8756 goto err_free;
ef28548058e47e9 Alan Maguire 2026-09-01 8757 }
ef28548058e47e9 Alan Maguire 2026-09-01 @8758 err = sysfs_create_bin_file(btf_kobj, attr);
ef28548058e47e9 Alan Maguire 2026-09-01 8759 if (err) {
ef28548058e47e9 Alan Maguire 2026-09-01 8760 pr_warn("failed to register [%s] BTF in sysfs: %d\n", name, err);
ef28548058e47e9 Alan Maguire 2026-09-01 8761 goto err_free;
ef28548058e47e9 Alan Maguire 2026-09-01 8762 }
ef28548058e47e9 Alan Maguire 2026-09-01 8763 return attr;
ef28548058e47e9 Alan Maguire 2026-09-01 8764
ef28548058e47e9 Alan Maguire 2026-09-01 8765 err_free:
ef28548058e47e9 Alan Maguire 2026-09-01 8766 kfree(attr->attr.name);
ef28548058e47e9 Alan Maguire 2026-09-01 8767 kfree(attr);
ef28548058e47e9 Alan Maguire 2026-09-01 8768 return ERR_PTR(err);
ef28548058e47e9 Alan Maguire 2026-09-01 8769 }
ef28548058e47e9 Alan Maguire 2026-09-01 8770
--
0-DAY CI Kernel Test Service
https://github.com/intel/lkp-tests/wiki
^ permalink raw reply [flat|nested] 2+ messages in thread
* kernel/bpf/btf.c:8758:undefined reference to `btf_kobj'
@ 2026-09-07 12:09 kernel test robot
0 siblings, 0 replies; 2+ messages in thread
From: kernel test robot @ 2026-09-07 12:09 UTC (permalink / raw)
To: Alan Maguire; +Cc: oe-kbuild-all, 0day robot
tree: https://github.com/intel-lab-lkp/linux/commits/Alan-Maguire/btf-Extend-UAPI-to-support-BTF-location-inline-site-info/20260901-175740
head: 9e05e3a3098276adea1e7277934c60598cde310e
commit: ef28548058e47e9c824316fe339f88dfd00c35aa btf: Make vmlinux, module inline info available in /sys/kernel/btf
date: 6 days ago
config: i386-allnoconfig-bpf (https://download.01.org/0day-ci/archive/20260907/202609071155.KwITLv3v-lkp@intel.com/config)
compiler: gcc-14 (Debian 14.2.0-19) 14.2.0
reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20260907/202609071155.KwITLv3v-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/r/202609071155.KwITLv3v-lkp@intel.com/
All errors (new ones prefixed by >>):
ld: kernel/bpf/btf.o: in function `sysfs_btf_add':
>> kernel/bpf/btf.c:8758:(.text+0x10363): undefined reference to `btf_kobj'
vim +8758 kernel/bpf/btf.c
18688de203b47e5 Kumar Kartikeya Dwivedi 2022-01-14 8737
ef28548058e47e9 Alan Maguire 2026-09-01 8738 #if IS_ENABLED(CONFIG_SYSFS)
ef28548058e47e9 Alan Maguire 2026-09-01 8739 struct bin_attribute *sysfs_btf_add(const char *name, void *data, size_t data_size)
ef28548058e47e9 Alan Maguire 2026-09-01 8740 {
ef28548058e47e9 Alan Maguire 2026-09-01 8741 struct bin_attribute *attr;
ef28548058e47e9 Alan Maguire 2026-09-01 8742 int err;
ef28548058e47e9 Alan Maguire 2026-09-01 8743
ef28548058e47e9 Alan Maguire 2026-09-01 8744 attr = kzalloc_obj(*attr);
ef28548058e47e9 Alan Maguire 2026-09-01 8745 if (!attr)
ef28548058e47e9 Alan Maguire 2026-09-01 8746 return ERR_PTR(-ENOMEM);
ef28548058e47e9 Alan Maguire 2026-09-01 8747
ef28548058e47e9 Alan Maguire 2026-09-01 8748 sysfs_bin_attr_init(attr);
ef28548058e47e9 Alan Maguire 2026-09-01 8749 attr->attr.mode = 0444;
ef28548058e47e9 Alan Maguire 2026-09-01 8750 attr->size = data_size;
ef28548058e47e9 Alan Maguire 2026-09-01 8751 attr->private = data;
ef28548058e47e9 Alan Maguire 2026-09-01 8752 attr->read = sysfs_bin_attr_simple_read;
ef28548058e47e9 Alan Maguire 2026-09-01 8753 attr->attr.name = kstrdup(name, GFP_KERNEL);
ef28548058e47e9 Alan Maguire 2026-09-01 8754 if (!attr->attr.name) {
ef28548058e47e9 Alan Maguire 2026-09-01 8755 err = -ENOMEM;
ef28548058e47e9 Alan Maguire 2026-09-01 8756 goto err_free;
ef28548058e47e9 Alan Maguire 2026-09-01 8757 }
ef28548058e47e9 Alan Maguire 2026-09-01 @8758 err = sysfs_create_bin_file(btf_kobj, attr);
ef28548058e47e9 Alan Maguire 2026-09-01 8759 if (err) {
ef28548058e47e9 Alan Maguire 2026-09-01 8760 pr_warn("failed to register [%s] BTF in sysfs: %d\n", name, err);
ef28548058e47e9 Alan Maguire 2026-09-01 8761 goto err_free;
ef28548058e47e9 Alan Maguire 2026-09-01 8762 }
ef28548058e47e9 Alan Maguire 2026-09-01 8763 return attr;
ef28548058e47e9 Alan Maguire 2026-09-01 8764
ef28548058e47e9 Alan Maguire 2026-09-01 8765 err_free:
ef28548058e47e9 Alan Maguire 2026-09-01 8766 kfree(attr->attr.name);
ef28548058e47e9 Alan Maguire 2026-09-01 8767 kfree(attr);
ef28548058e47e9 Alan Maguire 2026-09-01 8768 return ERR_PTR(err);
ef28548058e47e9 Alan Maguire 2026-09-01 8769 }
ef28548058e47e9 Alan Maguire 2026-09-01 8770
--
0-DAY CI Kernel Test Service
https://github.com/intel/lkp-tests/wiki
^ permalink raw reply [flat|nested] 2+ messages in thread
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