10:06 p.m.
tree: https://git.kernel.org/pub/scm/linux/kernel/git/mcgrof/linux-next.git
20210813-sysfs-fixes-v8
head: f5b8aadeca76656caad8bccc795bfe7b0730230a
commit: da898d13309d7b2855a74ee4e49e0fb43a55a2f1 [7/10] sysfs: fix deadlock race with
module removal
config: i386-randconfig-c001-20210812 (attached as .config)
compiler: gcc-9 (Debian 9.3.0-22) 9.3.0
reproduce (this is a W=1 build):
#
https://git.kernel.org/pub/scm/linux/kernel/git/mcgrof/linux-next.git/com...
git remote add mcgrof-next
https://git.kernel.org/pub/scm/linux/kernel/git/mcgrof/linux-next.git
git fetch --no-tags mcgrof-next 20210813-sysfs-fixes-v8
git checkout da898d13309d7b2855a74ee4e49e0fb43a55a2f1
# save the attached .config to linux build tree
make W=1 ARCH=i386
If you fix the issue, kindly add following tag as appropriate
Reported-by: kernel test robot <lkp(a)intel.com>
All warnings (new ones prefixed by >>):
In file included from include/linux/ipc.h:6,
from include/uapi/linux/sem.h:5,
from include/linux/sem.h:5,
from include/linux/sched.h:15,
from include/linux/ratelimit.h:6,
from include/linux/dev_printk.h:16,
from include/linux/device.h:15,
from include/linux/node.h:18,
from include/linux/cpu.h:17,
from include/linux/cacheinfo.h:6,
from arch/x86/kernel/cpu/resctrl/rdtgroup.c:15:
arch/x86/kernel/cpu/resctrl/rdtgroup.c: In function 'rdtgroup_add_file':
include/linux/uidgid.h:30:35: error: incompatible type for argument 4 of
'__kernfs_create_file'
30 | #define KUIDT_INIT(value) (kuid_t){ value }
| ^~~~~~~~~
| |
| kuid_t {aka struct <anonymous>}
include/linux/uidgid.h:55:25: note: in expansion of macro 'KUIDT_INIT'
55 | #define GLOBAL_ROOT_UID KUIDT_INIT(0)
| ^~~~~~~~~~
arch/x86/kernel/cpu/resctrl/rdtgroup.c:211:7: note: in expansion of macro
'GLOBAL_ROOT_UID'
211 | GLOBAL_ROOT_UID, GLOBAL_ROOT_GID,
| ^~~~~~~~~~~~~~~
In file included from include/linux/sysfs.h:16,
from include/linux/kobject.h:20,
from include/linux/energy_model.h:7,
from include/linux/device.h:16,
from include/linux/node.h:18,
from include/linux/cpu.h:17,
from include/linux/cacheinfo.h:6,
from arch/x86/kernel/cpu/resctrl/rdtgroup.c:15:
include/linux/kernfs.h:382:21: note: expected 'struct module *' but argument is
of type 'kuid_t' {aka 'struct <anonymous>'}
382 | struct kernfs_node *__kernfs_create_file(struct kernfs_node *parent,
| ^~~~~~~~~~~~~~~~~~~~
In file included from include/linux/ipc.h:6,
from include/uapi/linux/sem.h:5,
from include/linux/sem.h:5,
from include/linux/sched.h:15,
from include/linux/ratelimit.h:6,
from include/linux/dev_printk.h:16,
from include/linux/device.h:15,
from include/linux/node.h:18,
from include/linux/cpu.h:17,
from include/linux/cacheinfo.h:6,
from arch/x86/kernel/cpu/resctrl/rdtgroup.c:15:
include/linux/uidgid.h:31:35: error: incompatible type for argument 5 of
'__kernfs_create_file'
31 | #define KGIDT_INIT(value) (kgid_t){ value }
| ^~~~~~~~~
| |
| kgid_t {aka struct <anonymous>}
include/linux/uidgid.h:56:25: note: in expansion of macro 'KGIDT_INIT'
56 | #define GLOBAL_ROOT_GID KGIDT_INIT(0)
| ^~~~~~~~~~
arch/x86/kernel/cpu/resctrl/rdtgroup.c:211:24: note: in expansion of macro
'GLOBAL_ROOT_GID'
211 | GLOBAL_ROOT_UID, GLOBAL_ROOT_GID,
| ^~~~~~~~~~~~~~~
In file included from include/linux/sysfs.h:16,
from include/linux/kobject.h:20,
from include/linux/energy_model.h:7,
from include/linux/device.h:16,
from include/linux/node.h:18,
from include/linux/cpu.h:17,
from include/linux/cacheinfo.h:6,
from arch/x86/kernel/cpu/resctrl/rdtgroup.c:15:
include/linux/kernfs.h:382:21: note: expected 'kuid_t' {aka 'struct
<anonymous>'} but argument is of type 'kgid_t' {aka 'struct
<anonymous>'}
382 | struct kernfs_node *__kernfs_create_file(struct kernfs_node *parent,
| ^~~~~~~~~~~~~~~~~~~~
arch/x86/kernel/cpu/resctrl/rdtgroup.c:212:7: error: incompatible type for argument 6
of '__kernfs_create_file'
212 | 0, rft->kf_ops, rft, NULL, NULL);
| ^
| |
| int
In file included from include/linux/sysfs.h:16,
from include/linux/kobject.h:20,
from include/linux/energy_model.h:7,
from include/linux/device.h:16,
from include/linux/node.h:18,
from include/linux/cpu.h:17,
from include/linux/cacheinfo.h:6,
from arch/x86/kernel/cpu/resctrl/rdtgroup.c:15:
include/linux/kernfs.h:382:21: note: expected 'kgid_t' {aka 'struct
<anonymous>'} but argument is of type 'int'
382 | struct kernfs_node *__kernfs_create_file(struct kernfs_node *parent,
| ^~~~~~~~~~~~~~~~~~~~
> arch/x86/kernel/cpu/resctrl/rdtgroup.c:212:13: warning: passing
argument 7 of '__kernfs_create_file' makes integer from pointer without a cast
[-Wint-conversion]
212 | 0, rft->kf_ops, rft, NULL, NULL);
| ~~~^~~~~~~~
| |
| const struct kernfs_ops *
In file included from include/linux/sysfs.h:16,
from include/linux/kobject.h:20,
from include/linux/energy_model.h:7,
from include/linux/device.h:16,
from include/linux/node.h:18,
from include/linux/cpu.h:17,
from include/linux/cacheinfo.h:6,
from arch/x86/kernel/cpu/resctrl/rdtgroup.c:15:
include/linux/kernfs.h:382:21: note: expected 'loff_t' {aka 'long long
int'} but argument is of type 'const struct kernfs_ops *'
382 | struct kernfs_node *__kernfs_create_file(struct kernfs_node *parent,
| ^~~~~~~~~~~~~~~~~~~~
arch/x86/kernel/cpu/resctrl/rdtgroup.c:212:23: error: passing argument 8 of
'__kernfs_create_file' from incompatible pointer type
[-Werror=incompatible-pointer-types]
212 | 0, rft->kf_ops, rft, NULL, NULL);
| ^~~
| |
| struct rftype *
In file included from include/linux/sysfs.h:16,
from include/linux/kobject.h:20,
from include/linux/energy_model.h:7,
from include/linux/device.h:16,
from include/linux/node.h:18,
from include/linux/cpu.h:17,
from include/linux/cacheinfo.h:6,
from arch/x86/kernel/cpu/resctrl/rdtgroup.c:15:
include/linux/kernfs.h:382:21: note: expected 'const struct kernfs_ops *' but
argument is of type 'struct rftype *'
382 | struct kernfs_node *__kernfs_create_file(struct kernfs_node *parent,
| ^~~~~~~~~~~~~~~~~~~~
arch/x86/kernel/cpu/resctrl/rdtgroup.c:210:7: error: too few arguments to function
'__kernfs_create_file'
210 | kn = __kernfs_create_file(parent_kn, rft->name, rft->mode,
| ^~~~~~~~~~~~~~~~~~~~
In file included from include/linux/sysfs.h:16,
from include/linux/kobject.h:20,
from include/linux/energy_model.h:7,
from include/linux/device.h:16,
from include/linux/node.h:18,
from include/linux/cpu.h:17,
from include/linux/cacheinfo.h:6,
from arch/x86/kernel/cpu/resctrl/rdtgroup.c:15:
include/linux/kernfs.h:382:21: note: declared here
382 | struct kernfs_node *__kernfs_create_file(struct kernfs_node *parent,
| ^~~~~~~~~~~~~~~~~~~~
In file included from include/linux/ipc.h:6,
from include/uapi/linux/sem.h:5,
from include/linux/sem.h:5,
from include/linux/sched.h:15,
from include/linux/ratelimit.h:6,
from include/linux/dev_printk.h:16,
from include/linux/device.h:15,
from include/linux/node.h:18,
from include/linux/cpu.h:17,
from include/linux/cacheinfo.h:6,
from arch/x86/kernel/cpu/resctrl/rdtgroup.c:15:
arch/x86/kernel/cpu/resctrl/rdtgroup.c: In function 'mon_addfile':
include/linux/uidgid.h:30:35: error: incompatible type for argument 4 of
'__kernfs_create_file'
30 | #define KUIDT_INIT(value) (kuid_t){ value }
| ^~~~~~~~~
| |
| kuid_t {aka struct <anonymous>}
include/linux/uidgid.h:55:25: note: in expansion of macro 'KUIDT_INIT'
55 | #define GLOBAL_ROOT_UID KUIDT_INIT(0)
| ^~~~~~~~~~
arch/x86/kernel/cpu/resctrl/rdtgroup.c:2484:7: note: in expansion of macro
'GLOBAL_ROOT_UID'
2484 | GLOBAL_ROOT_UID, GLOBAL_ROOT_GID, 0,
| ^~~~~~~~~~~~~~~
In file included from include/linux/sysfs.h:16,
from include/linux/kobject.h:20,
from include/linux/energy_model.h:7,
from include/linux/device.h:16,
from include/linux/node.h:18,
from include/linux/cpu.h:17,
from include/linux/cacheinfo.h:6,
from arch/x86/kernel/cpu/resctrl/rdtgroup.c:15:
include/linux/kernfs.h:382:21: note: expected 'struct module *' but argument is
of type 'kuid_t' {aka 'struct <anonymous>'}
382 | struct kernfs_node *__kernfs_create_file(struct kernfs_node *parent,
| ^~~~~~~~~~~~~~~~~~~~
In file included from include/linux/ipc.h:6,
from include/uapi/linux/sem.h:5,
from include/linux/sem.h:5,
from include/linux/sched.h:15,
from include/linux/ratelimit.h:6,
from include/linux/dev_printk.h:16,
from include/linux/device.h:15,
from include/linux/node.h:18,
from include/linux/cpu.h:17,
from include/linux/cacheinfo.h:6,
from arch/x86/kernel/cpu/resctrl/rdtgroup.c:15:
include/linux/uidgid.h:31:35: error: incompatible type for argument 5 of
'__kernfs_create_file'
31 | #define KGIDT_INIT(value) (kgid_t){ value }
| ^~~~~~~~~
| |
| kgid_t {aka struct <anonymous>}
include/linux/uidgid.h:56:25: note: in expansion of macro 'KGIDT_INIT'
56 | #define GLOBAL_ROOT_GID KGIDT_INIT(0)
| ^~~~~~~~~~
arch/x86/kernel/cpu/resctrl/rdtgroup.c:2484:24: note: in expansion of macro
'GLOBAL_ROOT_GID'
2484 | GLOBAL_ROOT_UID, GLOBAL_ROOT_GID, 0,
vim +/__kernfs_create_file +212 arch/x86/kernel/cpu/resctrl/rdtgroup.c
4e978d06dedb82 arch/x86/kernel/cpu/intel_rdt_rdtgroup.c Fenghua Yu 2016-10-28 204
4e978d06dedb82 arch/x86/kernel/cpu/intel_rdt_rdtgroup.c Fenghua Yu 2016-10-28 205
static int rdtgroup_add_file(struct kernfs_node *parent_kn, struct rftype *rft)
4e978d06dedb82 arch/x86/kernel/cpu/intel_rdt_rdtgroup.c Fenghua Yu 2016-10-28 206
{
4e978d06dedb82 arch/x86/kernel/cpu/intel_rdt_rdtgroup.c Fenghua Yu 2016-10-28 207
struct kernfs_node *kn;
4e978d06dedb82 arch/x86/kernel/cpu/intel_rdt_rdtgroup.c Fenghua Yu 2016-10-28 208
int ret;
4e978d06dedb82 arch/x86/kernel/cpu/intel_rdt_rdtgroup.c Fenghua Yu 2016-10-28 209
4e978d06dedb82 arch/x86/kernel/cpu/intel_rdt_rdtgroup.c Fenghua Yu 2016-10-28 210
kn = __kernfs_create_file(parent_kn, rft->name, rft->mode,
488dee96bb62f0 arch/x86/kernel/cpu/intel_rdt_rdtgroup.c Dmitry Torokhov 2018-07-20 211
GLOBAL_ROOT_UID, GLOBAL_ROOT_GID,
4e978d06dedb82 arch/x86/kernel/cpu/intel_rdt_rdtgroup.c Fenghua Yu 2016-10-28 @212
0, rft->kf_ops, rft, NULL, NULL);
4e978d06dedb82 arch/x86/kernel/cpu/intel_rdt_rdtgroup.c Fenghua Yu 2016-10-28 213
if (IS_ERR(kn))
4e978d06dedb82 arch/x86/kernel/cpu/intel_rdt_rdtgroup.c Fenghua Yu 2016-10-28 214
return PTR_ERR(kn);
4e978d06dedb82 arch/x86/kernel/cpu/intel_rdt_rdtgroup.c Fenghua Yu 2016-10-28 215
4e978d06dedb82 arch/x86/kernel/cpu/intel_rdt_rdtgroup.c Fenghua Yu 2016-10-28 216
ret = rdtgroup_kn_set_ugid(kn);
4e978d06dedb82 arch/x86/kernel/cpu/intel_rdt_rdtgroup.c Fenghua Yu 2016-10-28 217
if (ret) {
4e978d06dedb82 arch/x86/kernel/cpu/intel_rdt_rdtgroup.c Fenghua Yu 2016-10-28 218
kernfs_remove(kn);
4e978d06dedb82 arch/x86/kernel/cpu/intel_rdt_rdtgroup.c Fenghua Yu 2016-10-28 219
return ret;
4e978d06dedb82 arch/x86/kernel/cpu/intel_rdt_rdtgroup.c Fenghua Yu 2016-10-28 220
}
4e978d06dedb82 arch/x86/kernel/cpu/intel_rdt_rdtgroup.c Fenghua Yu 2016-10-28 221
4e978d06dedb82 arch/x86/kernel/cpu/intel_rdt_rdtgroup.c Fenghua Yu 2016-10-28 222
return 0;
4e978d06dedb82 arch/x86/kernel/cpu/intel_rdt_rdtgroup.c Fenghua Yu 2016-10-28 223
}
4e978d06dedb82 arch/x86/kernel/cpu/intel_rdt_rdtgroup.c Fenghua Yu 2016-10-28 224
:::::: The code at line 212 was first introduced by commit
:::::: 4e978d06dedb8207b298a5a8a49fce4b2ab80d12 x86/intel_rdt: Add "info" files
to resctrl file system
:::::: TO: Fenghua Yu <fenghua.yu(a)intel.com>
:::::: CC: Thomas Gleixner <tglx(a)linutronix.de>
---
0-DAY CI Kernel Test Service, Intel Corporation
https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org