1:44 a.m.
tree: git://git.infradead.org/users/hch/misc.git set_fs-removal
head: c303c53544a4cea226bd0eca686edc71b65d701e
commit: d9916e81adce4a67f4c5fd01bbcc0ab1ff3b19c9 [14/21] uaccess: add infrastructure for
kernel builds with set_fs()
config: microblaze-randconfig-m031-20200808 (attached as .config)
compiler: microblaze-linux-gcc (GCC) 9.3.0
reproduce (this is a W=1 build):
wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O
~/bin/make.cross
chmod +x ~/bin/make.cross
git checkout d9916e81adce4a67f4c5fd01bbcc0ab1ff3b19c9
# save the attached .config to linux build tree
COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-9.3.0 make.cross ARCH=microblaze
If you fix the issue, kindly add following tag as appropriate
Reported-by: kernel test robot <lkp(a)intel.com>
All error/warnings (new ones prefixed by >>):
arch/Kconfig:27:warning: ignoring unsupported character '�'
arch/Kconfig:27:warning: ignoring unsupported character '�'
scripts/Makefile.asm-generic:25: redundant generic-y found in
arch/microblaze/include/asm/Kbuild: hw_irq.h
In file included from include/linux/sched/task.h:11,
from include/linux/sched/signal.h:9,
from include/linux/rcuwait.h:6,
from include/linux/percpu-rwsem.h:7,
from include/linux/fs.h:33,
from include/linux/huge_mm.h:8,
from include/linux/mm.h:675,
from arch/microblaze/include/asm/io.h:14,
from include/linux/io.h:13,
from include/linux/irq.h:20,
from include/asm-generic/hardirq.h:13,
from ./arch/microblaze/include/generated/asm/hardirq.h:1,
from include/linux/hardirq.h:10,
from include/linux/interrupt.h:11,
from include/linux/kernel_stat.h:9,
from arch/microblaze/kernel/asm-offsets.c:14:
> include/linux/uaccess.h:11:20: warning: extra tokens at end of
#ifdef directive
11 | #ifdef CONFIG_SET_FЅ
| ^
> include/linux/uaccess.h:32:3: error: conflicting types for
'mm_segment_t'
32 | } mm_segment_t;
| ^~~~~~~~~~~~
In file included from include/linux/thread_info.h:38,
from include/asm-generic/preempt.h:5,
from ./arch/microblaze/include/generated/asm/preempt.h:1,
from include/linux/preempt.h:78,
from include/linux/rcupdate.h:27,
from include/linux/rculist.h:11,
from include/linux/pid.h:5,
from include/linux/sched.h:14,
from arch/microblaze/kernel/asm-offsets.c:13:
arch/microblaze/include/asm/thread_info.h:61:3: note: previous declaration of
'mm_segment_t' was here
61 | } mm_segment_t;
| ^~~~~~~~~~~~
In file included from include/linux/sched/task.h:11,
from include/linux/sched/signal.h:9,
from include/linux/rcuwait.h:6,
from include/linux/percpu-rwsem.h:7,
from include/linux/fs.h:33,
from include/linux/huge_mm.h:8,
from include/linux/mm.h:675,
from arch/microblaze/include/asm/io.h:14,
from include/linux/io.h:13,
from include/linux/irq.h:20,
from include/asm-generic/hardirq.h:13,
from ./arch/microblaze/include/generated/asm/hardirq.h:1,
from include/linux/hardirq.h:10,
from include/linux/interrupt.h:11,
from include/linux/kernel_stat.h:9,
from arch/microblaze/kernel/asm-offsets.c:14:
> include/linux/uaccess.h:34: warning: "uaccess_kernel"
redefined
34 | #define uaccess_kernel() (false)
|
In file included from include/linux/uaccess.h:9,
from include/linux/sched/task.h:11,
from include/linux/sched/signal.h:9,
from include/linux/rcuwait.h:6,
from include/linux/percpu-rwsem.h:7,
from include/linux/fs.h:33,
from include/linux/huge_mm.h:8,
from include/linux/mm.h:675,
from arch/microblaze/include/asm/io.h:14,
from include/linux/io.h:13,
from include/linux/irq.h:20,
from include/asm-generic/hardirq.h:13,
from ./arch/microblaze/include/generated/asm/hardirq.h:1,
from include/linux/hardirq.h:10,
from include/linux/interrupt.h:11,
from include/linux/kernel_stat.h:9,
from arch/microblaze/kernel/asm-offsets.c:14:
arch/microblaze/include/asm/uaccess.h:44: note: this is the location of the previous
definition
44 | # define uaccess_kernel() (get_fs().seg == KERNEL_DS.seg)
|
make[2]: *** [scripts/Makefile.build:114: arch/microblaze/kernel/asm-offsets.s] Error
1
make[2]: Target '__build' not remade because of errors.
make[1]: *** [Makefile:1195: prepare0] Error 2
make[1]: Target 'prepare' not remade because of errors.
make: *** [Makefile:185: __sub-make] Error 2
make: Target 'prepare' not remade because of errors.
vim +/mm_segment_t +32 include/linux/uaccess.h
10
11 #ifdef CONFIG_SET_FЅ
12 /*
13 * Force the uaccess routines to be wired up for actual userspace access,
14 * overriding any possible set_fs(KERNEL_DS) still lingering around. Undone
15 * using force_uaccess_end below.
16 */
17 static inline mm_segment_t force_uaccess_begin(void)
18 {
19 mm_segment_t fs = get_fs();
20
21 set_fs(USER_DS);
22 return fs;
23 }
24
25 static inline void force_uaccess_end(mm_segment_t oldfs)
26 {
27 set_fs(oldfs);
28 }
29 #else /* CONFIG_SET_FЅ */
30 typedef struct {
31 /* empty dummy */
32 } mm_segment_t;
33
34 #define uaccess_kernel() (false)
35 #define
user_addr_max() (TASK_SIZE_MAX)
36
---
0-DAY CI Kernel Test Service, Intel Corporation
https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org