Le 11/06/2020 à 18:01, kernel test robot a écrit :
tree:   https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git 
master
head:   b29482fde649c72441d5478a4ea2c52c56d97a5e
commit: 793b08e2efff3ec020c5c5861d00ed394fcdd488 powerpc/kexec: Move kexec 
files into a dedicated subdir.
date:   7 months ago
config: powerpc-randconfig-s032-20200611 (attached as .config)
compiler: powerpc-linux-gcc (GCC) 9.3.0
reproduce:
         # apt-get install sparse
         # sparse version: v0.6.1-250-g42323db3-dirty
         git checkout 793b08e2efff3ec020c5c5861d00ed394fcdd488
         # save the attached .config to linux build tree
         make W=1 C=1 ARCH=powerpc CF='-fdiagnostic-prefix -D__CHECK_ENDIAN__'

If you fix the issue, kindly add following tag as appropriate
Reported-by: kernel test robot <l...@intel.com>


That's the second time the robot reports sparse errors on that commit, but the only thing I did is move code, that commit didn't add any code, so I don't know what I should do about it.

Christophe




sparse warnings: (new ones prefixed by >>)

arch/powerpc/kexec/core.c:246:29: sparse: sparse: incorrect type in assignment 
(different base types) @@     expected unsigned long long static [addressable] 
[toplevel] [usertype] crashk_base @@     got restricted __be32 [usertype] @@
    arch/powerpc/kexec/core.c:246:29: sparse:     expected unsigned long long 
static [addressable] [toplevel] [usertype] crashk_base
    arch/powerpc/kexec/core.c:246:29: sparse:     got restricted __be32 
[usertype]
arch/powerpc/kexec/core.c:248:29: sparse: sparse: incorrect type in assignment 
(different base types) @@     expected unsigned long long static [addressable] 
[toplevel] [usertype] crashk_size @@     got restricted __be32 [usertype] @@
    arch/powerpc/kexec/core.c:248:29: sparse:     expected unsigned long long 
static [addressable] [toplevel] [usertype] crashk_size
    arch/powerpc/kexec/core.c:248:29: sparse:     got restricted __be32 
[usertype]
    arch/powerpc/kexec/core.c:256:19: sparse: sparse: incorrect type in 
assignment (different base types) @@     expected unsigned long long static 
[addressable] [toplevel] mem_limit @@     got restricted __be32 [usertype] @@
    arch/powerpc/kexec/core.c:256:19: sparse:     expected unsigned long long 
static [addressable] [toplevel] mem_limit
    arch/powerpc/kexec/core.c:256:19: sparse:     got restricted __be32 
[usertype]
arch/powerpc/kexec/core.c:272:20: sparse: sparse: incorrect type in assignment 
(different base types) @@     expected unsigned long long static [addressable] 
[toplevel] [usertype] kernel_end @@     got restricted __be32 [usertype] @@
    arch/powerpc/kexec/core.c:272:20: sparse:     expected unsigned long long 
static [addressable] [toplevel] [usertype] kernel_end
    arch/powerpc/kexec/core.c:272:20: sparse:     got restricted __be32 
[usertype]

vim +246 arch/powerpc/kexec/core.c

ea961a828fe725 arch/powerpc/kernel/machine_kexec.c Anton Blanchard      
2014-01-22  235
6f29c3298b1821 arch/powerpc/kernel/machine_kexec.c Dale Farnsworth      
2008-12-17  236  static void __init export_crashk_values(struct device_node 
*node)
6f29c3298b1821 arch/powerpc/kernel/machine_kexec.c Dale Farnsworth      
2008-12-17  237  {
6f29c3298b1821 arch/powerpc/kernel/machine_kexec.c Dale Farnsworth      
2008-12-17  238         /* There might be existing crash kernel properties, but 
we can't
6f29c3298b1821 arch/powerpc/kernel/machine_kexec.c Dale Farnsworth      
2008-12-17  239          * be sure what's in them, so remove them. */
925e2d1ded80fc arch/powerpc/kernel/machine_kexec.c Suraj Jitindar Singh 
2016-04-28  240         of_remove_property(node, of_find_property(node,
925e2d1ded80fc arch/powerpc/kernel/machine_kexec.c Suraj Jitindar Singh 2016-04-28  241   
                              "linux,crashkernel-base", NULL));
925e2d1ded80fc arch/powerpc/kernel/machine_kexec.c Suraj Jitindar Singh 
2016-04-28  242         of_remove_property(node, of_find_property(node,
925e2d1ded80fc arch/powerpc/kernel/machine_kexec.c Suraj Jitindar Singh 2016-04-28  243   
                              "linux,crashkernel-size", NULL));
6f29c3298b1821 arch/powerpc/kernel/machine_kexec.c Dale Farnsworth      
2008-12-17  244
6f29c3298b1821 arch/powerpc/kernel/machine_kexec.c Dale Farnsworth      
2008-12-17  245         if (crashk_res.start != 0) {
ea961a828fe725 arch/powerpc/kernel/machine_kexec.c Anton Blanchard      
2014-01-22 @246                 crashk_base = cpu_to_be_ulong(crashk_res.start),
79d1c712958f94 arch/powerpc/kernel/machine_kexec.c Nathan Fontenot      2012-10-02  
247                 of_add_property(node, &crashk_base_prop);
ea961a828fe725 arch/powerpc/kernel/machine_kexec.c Anton Blanchard      2014-01-22 
@248                 crashk_size = cpu_to_be_ulong(resource_size(&crashk_res));
79d1c712958f94 arch/powerpc/kernel/machine_kexec.c Nathan Fontenot      2012-10-02  
249                 of_add_property(node, &crashk_size_prop);
6f29c3298b1821 arch/powerpc/kernel/machine_kexec.c Dale Farnsworth      
2008-12-17  250         }
4bc77a5ed215b4 arch/powerpc/kernel/machine_kexec.c Suzuki Poulose       
2012-08-21  251
4bc77a5ed215b4 arch/powerpc/kernel/machine_kexec.c Suzuki Poulose       
2012-08-21  252         /*
4bc77a5ed215b4 arch/powerpc/kernel/machine_kexec.c Suzuki Poulose       
2012-08-21  253          * memory_limit is required by the kexec-tools to limit 
the
4bc77a5ed215b4 arch/powerpc/kernel/machine_kexec.c Suzuki Poulose       
2012-08-21  254          * crash regions to the actual memory used.
4bc77a5ed215b4 arch/powerpc/kernel/machine_kexec.c Suzuki Poulose       
2012-08-21  255          */
ea961a828fe725 arch/powerpc/kernel/machine_kexec.c Anton Blanchard      
2014-01-22  256         mem_limit = cpu_to_be_ulong(memory_limit);
79d1c712958f94 arch/powerpc/kernel/machine_kexec.c Nathan Fontenot      2012-10-02  
257         of_update_property(node, &memory_limit_prop);
6f29c3298b1821 arch/powerpc/kernel/machine_kexec.c Dale Farnsworth      
2008-12-17  258  }
6f29c3298b1821 arch/powerpc/kernel/machine_kexec.c Dale Farnsworth      
2008-12-17  259
2e8e4f5b80e101 arch/powerpc/kernel/machine_kexec.c Dale Farnsworth      
2008-12-16  260  static int __init kexec_setup(void)
2e8e4f5b80e101 arch/powerpc/kernel/machine_kexec.c Dale Farnsworth      
2008-12-16  261  {
2e8e4f5b80e101 arch/powerpc/kernel/machine_kexec.c Dale Farnsworth      
2008-12-16  262         struct device_node *node;
2e8e4f5b80e101 arch/powerpc/kernel/machine_kexec.c Dale Farnsworth      
2008-12-16  263
2e8e4f5b80e101 arch/powerpc/kernel/machine_kexec.c Dale Farnsworth      2008-12-16  264   
      node = of_find_node_by_path("/chosen");
2e8e4f5b80e101 arch/powerpc/kernel/machine_kexec.c Dale Farnsworth      
2008-12-16  265         if (!node)
2e8e4f5b80e101 arch/powerpc/kernel/machine_kexec.c Dale Farnsworth      
2008-12-16  266                 return -ENOENT;
2e8e4f5b80e101 arch/powerpc/kernel/machine_kexec.c Dale Farnsworth      
2008-12-16  267
2e8e4f5b80e101 arch/powerpc/kernel/machine_kexec.c Dale Farnsworth      
2008-12-16  268         /* remove any stale properties so ours can be found */
925e2d1ded80fc arch/powerpc/kernel/machine_kexec.c Suraj Jitindar Singh 
2016-04-28  269         of_remove_property(node, of_find_property(node, 
kernel_end_prop.name, NULL));
2e8e4f5b80e101 arch/powerpc/kernel/machine_kexec.c Dale Farnsworth      
2008-12-16  270
2e8e4f5b80e101 arch/powerpc/kernel/machine_kexec.c Dale Farnsworth      
2008-12-16  271         /* information needed by userspace when using 
default_machine_kexec */
ea961a828fe725 arch/powerpc/kernel/machine_kexec.c Anton Blanchard      
2014-01-22 @272         kernel_end = cpu_to_be_ulong(__pa(_end));

:::::: The code at line 246 was first introduced by commit
:::::: ea961a828fe7250e954f086d74d9323c3d44c3e4 powerpc: Fix endian issues in 
kexec and crash dump code

:::::: TO: Anton Blanchard <an...@samba.org>
:::::: CC: Benjamin Herrenschmidt <b...@kernel.crashing.org>

---
0-DAY CI Kernel Test Service, Intel Corporation
https://lists.01.org/hyperkitty/list/kbuild-...@lists.01.org

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