* [weiny2:tip-pks-v4.8-5.12-rc 9/17] kernel/entry/common.c:383:26: error: use of undeclared identifier 'INIT_PKRS_VALUE'
@ 2021-03-17 13:53 kernel test robot
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From: kernel test robot @ 2021-03-17 13:53 UTC (permalink / raw)
To: kbuild-all
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tree: https://github.com/weiny2/linux-kernel.git tip-pks-v4.8-5.12-rc
head: fae3081ca82909d3bbe51a7942ab30f333b41f9d
commit: 5ea6a032eb2a6cd0a8000029d03ad4581ed3c276 [9/17] x86/entry: Preserve PKRS MSR across exceptions
config: s390-randconfig-r022-20210317 (attached as .config)
compiler: clang version 13.0.0 (https://github.com/llvm/llvm-project 8ef111222a3dd12a9175f69c3bff598c46e8bdf7)
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
# install s390 cross compiling tool for clang build
# apt-get install binutils-s390x-linux-gnu
# https://github.com/weiny2/linux-kernel/commit/5ea6a032eb2a6cd0a8000029d03ad4581ed3c276
git remote add weiny2 https://github.com/weiny2/linux-kernel.git
git fetch --no-tags weiny2 tip-pks-v4.8-5.12-rc
git checkout 5ea6a032eb2a6cd0a8000029d03ad4581ed3c276
# save the attached .config to linux build tree
COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross ARCH=s390
If you fix the issue, kindly add following tag as appropriate
Reported-by: kernel test robot <lkp@intel.com>
All errors (new ones prefixed by >>):
^
include/uapi/linux/swab.h:20:12: note: expanded from macro '___constant_swab32'
(((__u32)(x) & (__u32)0x0000ff00UL) << 8) | \
^
In file included from kernel/entry/common.c:4:
In file included from include/linux/entry-common.h:6:
In file included from include/linux/tracehook.h:50:
In file included from include/linux/memcontrol.h:22:
In file included from include/linux/writeback.h:14:
In file included from include/linux/blk-cgroup.h:23:
In file included from include/linux/blkdev.h:26:
In file included from include/linux/scatterlist.h:9:
In file included from arch/s390/include/asm/io.h:80:
include/asm-generic/io.h:490:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
val = __le32_to_cpu((__le32 __force)__raw_readl(PCI_IOBASE + addr));
~~~~~~~~~~ ^
include/uapi/linux/byteorder/big_endian.h:34:59: note: expanded from macro '__le32_to_cpu'
#define __le32_to_cpu(x) __swab32((__force __u32)(__le32)(x))
^
include/uapi/linux/swab.h:119:21: note: expanded from macro '__swab32'
___constant_swab32(x) : \
^
include/uapi/linux/swab.h:21:12: note: expanded from macro '___constant_swab32'
(((__u32)(x) & (__u32)0x00ff0000UL) >> 8) | \
^
In file included from kernel/entry/common.c:4:
In file included from include/linux/entry-common.h:6:
In file included from include/linux/tracehook.h:50:
In file included from include/linux/memcontrol.h:22:
In file included from include/linux/writeback.h:14:
In file included from include/linux/blk-cgroup.h:23:
In file included from include/linux/blkdev.h:26:
In file included from include/linux/scatterlist.h:9:
In file included from arch/s390/include/asm/io.h:80:
include/asm-generic/io.h:490:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
val = __le32_to_cpu((__le32 __force)__raw_readl(PCI_IOBASE + addr));
~~~~~~~~~~ ^
include/uapi/linux/byteorder/big_endian.h:34:59: note: expanded from macro '__le32_to_cpu'
#define __le32_to_cpu(x) __swab32((__force __u32)(__le32)(x))
^
include/uapi/linux/swab.h:119:21: note: expanded from macro '__swab32'
___constant_swab32(x) : \
^
include/uapi/linux/swab.h:22:12: note: expanded from macro '___constant_swab32'
(((__u32)(x) & (__u32)0xff000000UL) >> 24)))
^
In file included from kernel/entry/common.c:4:
In file included from include/linux/entry-common.h:6:
In file included from include/linux/tracehook.h:50:
In file included from include/linux/memcontrol.h:22:
In file included from include/linux/writeback.h:14:
In file included from include/linux/blk-cgroup.h:23:
In file included from include/linux/blkdev.h:26:
In file included from include/linux/scatterlist.h:9:
In file included from arch/s390/include/asm/io.h:80:
include/asm-generic/io.h:490:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
val = __le32_to_cpu((__le32 __force)__raw_readl(PCI_IOBASE + addr));
~~~~~~~~~~ ^
include/uapi/linux/byteorder/big_endian.h:34:59: note: expanded from macro '__le32_to_cpu'
#define __le32_to_cpu(x) __swab32((__force __u32)(__le32)(x))
^
include/uapi/linux/swab.h:120:12: note: expanded from macro '__swab32'
__fswab32(x))
^
In file included from kernel/entry/common.c:4:
In file included from include/linux/entry-common.h:6:
In file included from include/linux/tracehook.h:50:
In file included from include/linux/memcontrol.h:22:
In file included from include/linux/writeback.h:14:
In file included from include/linux/blk-cgroup.h:23:
In file included from include/linux/blkdev.h:26:
In file included from include/linux/scatterlist.h:9:
In file included from arch/s390/include/asm/io.h:80:
include/asm-generic/io.h:501:33: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
__raw_writeb(value, PCI_IOBASE + addr);
~~~~~~~~~~ ^
include/asm-generic/io.h:511:59: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
__raw_writew((u16 __force)cpu_to_le16(value), PCI_IOBASE + addr);
~~~~~~~~~~ ^
include/asm-generic/io.h:521:59: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
__raw_writel((u32 __force)cpu_to_le32(value), PCI_IOBASE + addr);
~~~~~~~~~~ ^
include/asm-generic/io.h:609:20: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
readsb(PCI_IOBASE + addr, buffer, count);
~~~~~~~~~~ ^
include/asm-generic/io.h:617:20: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
readsw(PCI_IOBASE + addr, buffer, count);
~~~~~~~~~~ ^
include/asm-generic/io.h:625:20: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
readsl(PCI_IOBASE + addr, buffer, count);
~~~~~~~~~~ ^
include/asm-generic/io.h:634:21: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
writesb(PCI_IOBASE + addr, buffer, count);
~~~~~~~~~~ ^
include/asm-generic/io.h:643:21: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
writesw(PCI_IOBASE + addr, buffer, count);
~~~~~~~~~~ ^
include/asm-generic/io.h:652:21: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
writesl(PCI_IOBASE + addr, buffer, count);
~~~~~~~~~~ ^
>> kernel/entry/common.c:383:26: error: use of undeclared identifier 'INIT_PKRS_VALUE'
pkrs_save_set_irq(regs, INIT_PKRS_VALUE);
^
kernel/entry/common.c:468:26: error: use of undeclared identifier 'INIT_PKRS_VALUE'
pkrs_save_set_irq(regs, INIT_PKRS_VALUE);
^
20 warnings and 2 errors generated.
vim +/INIT_PKRS_VALUE +383 kernel/entry/common.c
319
320 noinstr irqentry_state_t irqentry_enter(struct pt_regs *regs)
321 {
322 irqentry_state_t ret = {
323 .exit_rcu = false,
324 };
325
326 if (user_mode(regs)) {
327 irqentry_enter_from_user_mode(regs);
328 return ret;
329 }
330
331 /*
332 * If this entry hit the idle task invoke rcu_irq_enter() whether
333 * RCU is watching or not.
334 *
335 * Interrupts can nest when the first interrupt invokes softirq
336 * processing on return which enables interrupts.
337 *
338 * Scheduler ticks in the idle task can mark quiescent state and
339 * terminate a grace period, if and only if the timer interrupt is
340 * not nested into another interrupt.
341 *
342 * Checking for rcu_is_watching() here would prevent the nesting
343 * interrupt to invoke rcu_irq_enter(). If that nested interrupt is
344 * the tick then rcu_flavor_sched_clock_irq() would wrongfully
345 * assume that it is the first interupt and eventually claim
346 * quiescent state and end grace periods prematurely.
347 *
348 * Unconditionally invoke rcu_irq_enter() so RCU state stays
349 * consistent.
350 *
351 * TINY_RCU does not support EQS, so let the compiler eliminate
352 * this part when enabled.
353 */
354 if (!IS_ENABLED(CONFIG_TINY_RCU) && is_idle_task(current)) {
355 /*
356 * If RCU is not watching then the same careful
357 * sequence vs. lockdep and tracing is required
358 * as in irqentry_enter_from_user_mode().
359 */
360 lockdep_hardirqs_off(CALLER_ADDR0);
361 rcu_irq_enter();
362 instrumentation_begin();
363 trace_hardirqs_off_finish();
364 instrumentation_end();
365
366 ret.exit_rcu = true;
367 goto done;
368 }
369
370 /*
371 * If RCU is watching then RCU only wants to check whether it needs
372 * to restart the tick in NOHZ mode. rcu_irq_enter_check_tick()
373 * already contains a warning when RCU is not watching, so no point
374 * in having another one here.
375 */
376 lockdep_hardirqs_off(CALLER_ADDR0);
377 instrumentation_begin();
378 rcu_irq_enter_check_tick();
379 trace_hardirqs_off_finish();
380 instrumentation_end();
381
382 done:
> 383 pkrs_save_set_irq(regs, INIT_PKRS_VALUE);
384 return ret;
385 }
386
---
0-DAY CI Kernel Test Service, Intel Corporation
https://lists.01.org/hyperkitty/list/kbuild-all(a)lists.01.org
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2021-03-17 13:53 [weiny2:tip-pks-v4.8-5.12-rc 9/17] kernel/entry/common.c:383:26: error: use of undeclared identifier 'INIT_PKRS_VALUE' kernel test robot
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