tree: https://git.kernel.org/pub/scm/linux/kernel/git/hyperv/linux.git hyperv-next
head: 63cd06c67a2f46009da6e88ca46f9c7231ab8998
commit: f16dc95481e2ef2c385008f8b7bd382ea6919ee2 [1/5] swiotlb: Add swiotlb bounce buffer remap function for HV IVM
config: i386-randconfig-a001-20211219 (https://download.01.org/0day-ci/archive/20211220/[email protected]/config)
compiler: clang version 14.0.0 (https://github.com/llvm/llvm-project 683cbc12b33e5c8dc8d29bf5ed79fbf45763aadd)
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
# https://git.kernel.org/pub/scm/linux/kernel/git/hyperv/linux.git/commit/?id=f16dc95481e2ef2c385008f8b7bd382ea6919ee2
git remote add hyperv https://git.kernel.org/pub/scm/linux/kernel/git/hyperv/linux.git
git fetch --no-tags hyperv hyperv-next
git checkout f16dc95481e2ef2c385008f8b7bd382ea6919ee2
# save the config file to linux build tree
mkdir build_dir
COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross W=1 O=build_dir ARCH=i386 SHELL=/bin/bash kernel/dma/
If you fix the issue, kindly add following tag as appropriate
Reported-by: kernel test robot <[email protected]>
All warnings (new ones prefixed by >>):
>> kernel/dma/swiotlb.c:176:11: warning: format specifies type 'unsigned long long' but the argument has type 'phys_addr_t' (aka 'unsigned int') [-Wformat]
paddr, bytes);
^~~~~
include/linux/printk.h:493:33: note: expanded from macro 'pr_err'
printk(KERN_ERR pr_fmt(fmt), ##__VA_ARGS__)
~~~ ^~~~~~~~~~~
include/linux/printk.h:450:60: note: expanded from macro 'printk'
#define printk(fmt, ...) printk_index_wrap(_printk, fmt, ##__VA_ARGS__)
~~~ ^~~~~~~~~~~
include/linux/printk.h:422:19: note: expanded from macro 'printk_index_wrap'
_p_func(_fmt, ##__VA_ARGS__); \
~~~~ ^~~~~~~~~~~
1 warning generated.
vim +176 kernel/dma/swiotlb.c
160
161 /*
162 * Remap swioltb memory in the unencrypted physical address space
163 * when swiotlb_unencrypted_base is set. (e.g. for Hyper-V AMD SEV-SNP
164 * Isolation VMs).
165 */
166 static void *swiotlb_mem_remap(struct io_tlb_mem *mem, unsigned long bytes)
167 {
168 void *vaddr = NULL;
169
170 if (swiotlb_unencrypted_base) {
171 phys_addr_t paddr = mem->start + swiotlb_unencrypted_base;
172
173 vaddr = memremap(paddr, bytes, MEMREMAP_WB);
174 if (!vaddr)
175 pr_err("Failed to map the unencrypted memory %llx size %lx.\n",
> 176 paddr, bytes);
177 }
178
179 return vaddr;
180 }
181
---
0-DAY CI Kernel Test Service, Intel Corporation
https://lists.01.org/hyperkitty/list/[email protected]
On Mon, Dec 20, 2021 at 09:10:04PM +0800, kernel test robot wrote:
> tree: https://git.kernel.org/pub/scm/linux/kernel/git/hyperv/linux.git hyperv-next
> head: 63cd06c67a2f46009da6e88ca46f9c7231ab8998
> commit: f16dc95481e2ef2c385008f8b7bd382ea6919ee2 [1/5] swiotlb: Add swiotlb bounce buffer remap function for HV IVM
> config: i386-randconfig-a001-20211219 (https://download.01.org/0day-ci/archive/20211220/[email protected]/config)
> compiler: clang version 14.0.0 (https://github.com/llvm/llvm-project 683cbc12b33e5c8dc8d29bf5ed79fbf45763aadd)
> 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
> # https://git.kernel.org/pub/scm/linux/kernel/git/hyperv/linux.git/commit/?id=f16dc95481e2ef2c385008f8b7bd382ea6919ee2
> git remote add hyperv https://git.kernel.org/pub/scm/linux/kernel/git/hyperv/linux.git
> git fetch --no-tags hyperv hyperv-next
> git checkout f16dc95481e2ef2c385008f8b7bd382ea6919ee2
> # save the config file to linux build tree
> mkdir build_dir
> COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross W=1 O=build_dir ARCH=i386 SHELL=/bin/bash kernel/dma/
>
> If you fix the issue, kindly add following tag as appropriate
> Reported-by: kernel test robot <[email protected]>
>
> All warnings (new ones prefixed by >>):
>
> >> kernel/dma/swiotlb.c:176:11: warning: format specifies type 'unsigned long long' but the argument has type 'phys_addr_t' (aka 'unsigned int') [-Wformat]
> paddr, bytes);
> ^~~~~
> include/linux/printk.h:493:33: note: expanded from macro 'pr_err'
> printk(KERN_ERR pr_fmt(fmt), ##__VA_ARGS__)
> ~~~ ^~~~~~~~~~~
> include/linux/printk.h:450:60: note: expanded from macro 'printk'
> #define printk(fmt, ...) printk_index_wrap(_printk, fmt, ##__VA_ARGS__)
> ~~~ ^~~~~~~~~~~
> include/linux/printk.h:422:19: note: expanded from macro 'printk_index_wrap'
> _p_func(_fmt, ##__VA_ARGS__); \
> ~~~~ ^~~~~~~~~~~
> 1 warning generated.
>
>
> vim +176 kernel/dma/swiotlb.c
>
> 160
> 161 /*
> 162 * Remap swioltb memory in the unencrypted physical address space
> 163 * when swiotlb_unencrypted_base is set. (e.g. for Hyper-V AMD SEV-SNP
> 164 * Isolation VMs).
> 165 */
> 166 static void *swiotlb_mem_remap(struct io_tlb_mem *mem, unsigned long bytes)
> 167 {
> 168 void *vaddr = NULL;
> 169
> 170 if (swiotlb_unencrypted_base) {
> 171 phys_addr_t paddr = mem->start + swiotlb_unencrypted_base;
> 172
> 173 vaddr = memremap(paddr, bytes, MEMREMAP_WB);
> 174 if (!vaddr)
> 175 pr_err("Failed to map the unencrypted memory %llx size %lx.\n",
> > 176 paddr, bytes);
According to printk-format.rst, printing phys_addr_t should use %pa. And
paddr should be passed by reference.
I will fold in the following snippet to the offending patch.
diff --git a/kernel/dma/swiotlb.c b/kernel/dma/swiotlb.c
index 1b0501fd3e0e..b36c1cdd0c4f 100644
--- a/kernel/dma/swiotlb.c
+++ b/kernel/dma/swiotlb.c
@@ -172,8 +172,8 @@ static void *swiotlb_mem_remap(struct io_tlb_mem *mem, unsigned long bytes)
vaddr = memremap(paddr, bytes, MEMREMAP_WB);
if (!vaddr)
- pr_err("Failed to map the unencrypted memory %llx size %lx.\n",
- paddr, bytes);
+ pr_err("Failed to map the unencrypted memory %pa size %lx.\n",
+ &paddr, bytes);
}
return vaddr;
> 177 }
> 178
> 179 return vaddr;
> 180 }
> 181
>
> ---
> 0-DAY CI Kernel Test Service, Intel Corporation
> https://lists.01.org/hyperkitty/list/[email protected]