Re: [PATCH 1/2] nvme: remove workarounds for gcc bug wrt unnamed fields in initializers

kernel test robot
2020-06-18T17:51:34Z

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Hi Niklas,

I love your patch! Yet something to improve:

[auto build test ERROR on block/for-next]
[also build test ERROR on linus/master v5.8-rc1 next-20200618]
[cannot apply to hch-configfs/for-next]
[If your patch is applied to the wrong git tree, kindly drop us a note.
And when submitting patch, we suggest to use as documented in
https://git-scm.com/docs/git-format-patch]

url: https://github.com/0day-ci/linux/commits/Niklas-Cassel/nvme-remove-workarounds-for-gcc-bug-wrt-unnamed-fields-in-initializers/20200618-223525
base: https://git.kernel.org/pub/scm/linux/kernel/git/axboe/linux-block.git for-next
config: m68k-allmodconfig (attached as .config)
compiler: m68k-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
# save the attached .config to linux build tree
COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-9.3.0 make.cross ARCH=m68k

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 >>):

In file included from arch/m68k/include/asm/io_mm.h:25,
from arch/m68k/include/asm/io.h:8,
from include/linux/scatterlist.h:9,
from include/linux/dma-mapping.h:11,
from include/rdma/ib_verbs.h:44,
from include/rdma/mr_pool.h:8,
from drivers/nvme/host/rdma.c:10:
arch/m68k/include/asm/raw_io.h: In function 'raw_rom_outsb':
arch/m68k/include/asm/raw_io.h:83:7: warning: variable '__w' set but not used [-Wunused-but-set-variable]
83 | ({u8 __w, __v = (b); u32 _addr = ((u32) (addr)); \
| ^~~
arch/m68k/include/asm/raw_io.h:430:3: note: in expansion of macro 'rom_out_8'
430 | rom_out_8(port, *buf++);
| ^~~~~~~~~
arch/m68k/include/asm/raw_io.h: In function 'raw_rom_outsw':
arch/m68k/include/asm/raw_io.h:86:8: warning: variable '__w' set but not used [-Wunused-but-set-variable]
86 | ({u16 __w, __v = (w); u32 _addr = ((u32) (addr)); \
| ^~~
arch/m68k/include/asm/raw_io.h:448:3: note: in expansion of macro 'rom_out_be16'
448 | rom_out_be16(port, *buf++);
| ^~~~~~~~~~~~
arch/m68k/include/asm/raw_io.h: In function 'raw_rom_outsw_swapw':
arch/m68k/include/asm/raw_io.h:90:8: warning: variable '__w' set but not used [-Wunused-but-set-variable]
90 | ({u16 __w, __v = (w); u32 _addr = ((u32) (addr)); \
| ^~~
arch/m68k/include/asm/raw_io.h:466:3: note: in expansion of macro 'rom_out_le16'
466 | rom_out_le16(port, *buf++);
| ^~~~~~~~~~~~
In file included from include/linux/kernel.h:11,
from include/linux/list.h:9,
from include/linux/module.h:12,
from drivers/nvme/host/rdma.c:7:
include/linux/scatterlist.h: In function 'sg_set_buf':
arch/m68k/include/asm/page_mm.h:169:49: warning: ordered comparison of pointer with null pointer [-Wextra]
169 | #define virt_addr_valid(kaddr) ((void *)(kaddr) >= (void *)PAGE_OFFSET && (void *)(kaddr) < high_memory)
| ^~
include/linux/compiler.h:78:42: note: in definition of macro 'unlikely'
78 | # define unlikely(x) __builtin_expect(!!(x), 0)
| ^
include/linux/scatterlist.h:143:2: note: in expansion of macro 'BUG_ON'
143 | BUG_ON(!virt_addr_valid(buf));
| ^~~~~~
include/linux/scatterlist.h:143:10: note: in expansion of macro 'virt_addr_valid'
143 | BUG_ON(!virt_addr_valid(buf));
| ^~~~~~~~~~~~~~~
In file included from arch/m68k/include/asm/bug.h:32,
from include/linux/bug.h:5,
from include/linux/thread_info.h:12,
from include/asm-generic/preempt.h:5,
from ./arch/m68k/include/generated/asm/preempt.h:1,
from include/linux/preempt.h:78,
from include/linux/spinlock.h:51,
from include/linux/seqlock.h:36,
from include/linux/time.h:6,
from include/linux/stat.h:19,
from include/linux/module.h:13,
from drivers/nvme/host/rdma.c:7:
include/linux/dma-mapping.h: In function 'dma_map_resource':
arch/m68k/include/asm/page_mm.h:169:49: warning: ordered comparison of pointer with null pointer [-Wextra]
169 | #define virt_addr_valid(kaddr) ((void *)(kaddr) >= (void *)PAGE_OFFSET && (void *)(kaddr) < high_memory)
| ^~
include/asm-generic/bug.h:144:27: note: in definition of macro 'WARN_ON_ONCE'
144 | int __ret_warn_once = !!(condition); \
| ^~~~~~~~~
arch/m68k/include/asm/page_mm.h:170:25: note: in expansion of macro 'virt_addr_valid'
170 | #define pfn_valid(pfn) virt_addr_valid(pfn_to_virt(pfn))
| ^~~~~~~~~~~~~~~
include/linux/dma-mapping.h:352:19: note: in expansion of macro 'pfn_valid'
352 | if (WARN_ON_ONCE(pfn_valid(PHYS_PFN(phys_addr))))
| ^~~~~~~~~
drivers/nvme/host/rdma.c: In function 'nvme_rdma_route_resolved':
>> drivers/nvme/host/rdma.c:1814:20: error: 'priv' undeclared (first use in this function)
1814 | .private_data = &priv,
| ^~~~
drivers/nvme/host/rdma.c:1814:20: note: each undeclared identifier is reported only once for each function it appears in

vim +/priv +1814 drivers/nvme/host/rdma.c

1803
1804 static int nvme_rdma_route_resolved(struct nvme_rdma_queue *queue)
1805 {
1806 struct nvme_rdma_ctrl *ctrl = queue->ctrl;
1807 struct rdma_conn_param param = {
1808 .qp_num = queue->qp->qp_num,
1809 .flow_control = 1,
1810 .responder_resources = queue->device->dev->attrs.max_qp_rd_atom,
1811 /* maximum retry count */
1812 .retry_count = 7,
1813 .rnr_retry_count = 7,
> 1814 .private_data = &priv,
1815 .private_data_len = sizeof(priv),
1816 };
1817 struct nvme_rdma_cm_req priv = {
1818 .recfmt = cpu_to_le16(NVME_RDMA_CM_FMT_1_0),
1819 .qid = cpu_to_le16(nvme_rdma_queue_idx(queue)),
1820 };
1821 int ret;
1822
1823 /*
1824 * set the admin queue depth to the minimum size
1825 * specified by the Fabrics standard.
1826 */
1827 if (priv.qid == 0) {
1828 priv.hrqsize = cpu_to_le16(NVME_AQ_DEPTH);
1829 priv.hsqsize = cpu_to_le16(NVME_AQ_DEPTH - 1);
1830 } else {
1831 /*
1832 * current interpretation of the fabrics spec
1833 * is at minimum you make hrqsize sqsize+1, or a
1834 * 1's based representation of sqsize.
1835 */
1836 priv.hrqsize = cpu_to_le16(queue->queue_size);
1837 priv.hsqsize = cpu_to_le16(queue->ctrl->ctrl.sqsize);
1838 }
1839
1840 ret = rdma_connect(queue->cm_id, &param);
1841 if (ret) {
1842 dev_err(ctrl->ctrl.device,
1843 "rdma_connect failed (%d).\n", ret);
1844 goto out_destroy_queue_ib;
1845 }
1846
1847 return 0;
1848
1849 out_destroy_queue_ib:
1850 nvme_rdma_destroy_queue_ib(queue);
1851 return ret;
1852 }
1853

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

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