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Date: Tue, 25 Jan 2022 18:02:08 +0800
From: kernel test robot <lkp@...el.com>
To: Nicholas Piggin <npiggin@...il.com>
Cc: kbuild-all@...ts.01.org, linux-kernel@...r.kernel.org,
Michael Ellerman <mpe@...erman.id.au>
Subject: arch/powerpc/kernel/time.c:846:9: sparse: sparse: incorrect type in
initializer (different address spaces)
tree: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master
head: dd81e1c7d5fb126e5fbc5c9e334d7b3ec29a16a0
commit: 4ebbd075bcde7884e078d4360510b989f559bfec KVM: PPC: Book3S HV P9: Use host timer accounting to avoid decrementer read
date: 9 weeks ago
config: powerpc64-randconfig-s031-20220125 (https://download.01.org/0day-ci/archive/20220125/202201251708.BOnUdbSj-lkp@intel.com/config)
compiler: powerpc64-linux-gcc (GCC) 11.2.0
reproduce:
wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross
chmod +x ~/bin/make.cross
# apt-get install sparse
# sparse version: v0.6.4-dirty
# https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=4ebbd075bcde7884e078d4360510b989f559bfec
git remote add linus https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
git fetch --no-tags linus master
git checkout 4ebbd075bcde7884e078d4360510b989f559bfec
# save the config file to linux build tree
mkdir build_dir
COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-11.2.0 make.cross C=1 CF='-fdiagnostic-prefix -D__CHECK_ENDIAN__' O=build_dir ARCH=powerpc SHELL=/bin/bash
If you fix the issue, kindly add following tag as appropriate
Reported-by: kernel test robot <lkp@...el.com>
sparse warnings: (new ones prefixed by >>)
arch/powerpc/kernel/time.c:90:5: sparse: sparse: symbol 'decrementer_max' was not declared. Should it be static?
>> arch/powerpc/kernel/time.c:846:9: sparse: sparse: incorrect type in initializer (different address spaces) @@ expected void const [noderef] __percpu *__vpp_verify @@ got unsigned long long * @@
arch/powerpc/kernel/time.c:846:9: sparse: expected void const [noderef] __percpu *__vpp_verify
arch/powerpc/kernel/time.c:846:9: sparse: got unsigned long long *
>> arch/powerpc/kernel/time.c:846:9: sparse: sparse: incorrect type in initializer (different address spaces) @@ expected void const [noderef] __percpu *__vpp_verify @@ got unsigned long long * @@
arch/powerpc/kernel/time.c:846:9: sparse: expected void const [noderef] __percpu *__vpp_verify
arch/powerpc/kernel/time.c:846:9: sparse: got unsigned long long *
>> arch/powerpc/kernel/time.c:846:9: sparse: sparse: incorrect type in initializer (different address spaces) @@ expected void const [noderef] __percpu *__vpp_verify @@ got unsigned long long * @@
arch/powerpc/kernel/time.c:846:9: sparse: expected void const [noderef] __percpu *__vpp_verify
arch/powerpc/kernel/time.c:846:9: sparse: got unsigned long long *
>> arch/powerpc/kernel/time.c:846:9: sparse: sparse: incorrect type in initializer (different address spaces) @@ expected void const [noderef] __percpu *__vpp_verify @@ got unsigned long long * @@
arch/powerpc/kernel/time.c:846:9: sparse: expected void const [noderef] __percpu *__vpp_verify
arch/powerpc/kernel/time.c:846:9: sparse: got unsigned long long *
>> arch/powerpc/kernel/time.c:846:9: sparse: sparse: incorrect type in initializer (different address spaces) @@ expected void const [noderef] __percpu *__vpp_verify @@ got unsigned long long * @@
arch/powerpc/kernel/time.c:846:9: sparse: expected void const [noderef] __percpu *__vpp_verify
arch/powerpc/kernel/time.c:846:9: sparse: got unsigned long long *
arch/powerpc/kernel/time.c:626:24: sparse: sparse: incorrect type in initializer (different address spaces) @@ expected void const [noderef] __percpu *__vpp_verify @@ got unsigned long long * @@
arch/powerpc/kernel/time.c:626:24: sparse: expected void const [noderef] __percpu *__vpp_verify
arch/powerpc/kernel/time.c:626:24: sparse: got unsigned long long *
arch/powerpc/kernel/time.c:557:24: sparse: sparse: incorrect type in initializer (different address spaces) @@ expected void const [noderef] __percpu *__vpp_verify @@ got unsigned long long * @@
arch/powerpc/kernel/time.c:557:24: sparse: expected void const [noderef] __percpu *__vpp_verify
arch/powerpc/kernel/time.c:557:24: sparse: got unsigned long long *
vim +846 arch/powerpc/kernel/time.c
4a4cfe3836916e1 Tony Breeds 2007-09-22 842
d831d0b83f20588 Tony Breeds 2007-09-21 843 static int decrementer_set_next_event(unsigned long evt,
d831d0b83f20588 Tony Breeds 2007-09-21 844 struct clock_event_device *dev)
d831d0b83f20588 Tony Breeds 2007-09-21 845 {
6601ec1c2ba9294 Christophe Leroy 2020-09-29 @846 __this_cpu_write(decrementers_next_tb, get_tb() + evt);
d831d0b83f20588 Tony Breeds 2007-09-21 847 set_dec(evt);
0215f7d8c53fb19 Benjamin Herrenschmidt 2014-01-14 848
0215f7d8c53fb19 Benjamin Herrenschmidt 2014-01-14 849 /* We may have raced with new irq work */
0215f7d8c53fb19 Benjamin Herrenschmidt 2014-01-14 850 if (test_irq_work_pending())
0215f7d8c53fb19 Benjamin Herrenschmidt 2014-01-14 851 set_dec(1);
0215f7d8c53fb19 Benjamin Herrenschmidt 2014-01-14 852
d831d0b83f20588 Tony Breeds 2007-09-21 853 return 0;
d831d0b83f20588 Tony Breeds 2007-09-21 854 }
d831d0b83f20588 Tony Breeds 2007-09-21 855
:::::: The code at line 846 was first introduced by commit
:::::: 6601ec1c2ba929430f5585ce7f9d9960b0e0a01d powerpc: Remove get_tb_or_rtc()
:::::: TO: Christophe Leroy <christophe.leroy@...roup.eu>
:::::: CC: Michael Ellerman <mpe@...erman.id.au>
---
0-DAY CI Kernel Test Service, Intel Corporation
https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org
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