* RE: [linux-next:master 6312/7430] drivers/infiniband/hw/irdma/hw.c:579:44: sparse: sparse: non size-preserving integer to pointer cast
[not found] <202106050138.LzIEgZmE-lkp@intel.com>
@ 2021-06-07 14:56 ` Saleem, Shiraz
0 siblings, 0 replies; only message in thread
From: Saleem, Shiraz @ 2021-06-07 14:56 UTC (permalink / raw)
To: lkp; +Cc: kbuild-all, Linux Memory Management List, Jason Gunthorpe
> Subject: [linux-next:master 6312/7430] drivers/infiniband/hw/irdma/hw.c:579:44:
> sparse: sparse: non size-preserving integer to pointer cast
>
> tree: https://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git master
> head: ccc252d2e818f6a479441119ad453c3ce7c7c461
> commit: fa0cf568fd76550c1ddb806c03a65a1a4a1ea909 [6312/7430] RDMA/irdma:
> Add irdma Kconfig/Makefile and remove i40iw
> config: mips-allyesconfig (attached as .config)
> compiler: mips-linux-gcc (GCC) 9.3.0
> 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: v0.6.3-341-g8af24329-dirty
> # https://git.kernel.org/pub/scm/linux/kernel/git/next/linux-
> next.git/commit/?id=fa0cf568fd76550c1ddb806c03a65a1a4a1ea909
> git remote add linux-next
> https://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git
> git fetch --no-tags linux-next master
> git checkout fa0cf568fd76550c1ddb806c03a65a1a4a1ea909
> # save the attached .config to linux build tree
> COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-9.3.0 make.cross
> C=1 CF='-fdiagnostic-prefix -D__CHECK_ENDIAN__' W=1 ARCH=mips
>
> If you fix the issue, kindly add following tag as appropriate
> Reported-by: kernel test robot <lkp@intel.com>
>
>
> sparse warnings: (new ones prefixed by >>)
> command-line: note: in included file:
> builtin:1:9: sparse: sparse: preprocessor token __ATOMIC_ACQUIRE redefined
> builtin:0:0: sparse: this was the original definition
> builtin:1:9: sparse: sparse: preprocessor token __ATOMIC_SEQ_CST redefined
> builtin:0:0: sparse: this was the original definition
> builtin:1:9: sparse: sparse: preprocessor token __ATOMIC_ACQ_REL redefined
> builtin:0:0: sparse: this was the original definition
> builtin:1:9: sparse: sparse: preprocessor token __ATOMIC_RELEASE redefined
> builtin:0:0: sparse: this was the original definition
> >> drivers/infiniband/hw/irdma/hw.c:579:44: sparse: sparse: non
> >> size-preserving integer to pointer cast
>
> vim +579 drivers/infiniband/hw/irdma/hw.c
>
> 44d9e52977a1b9 Mustafa Ismail 2021-06-02 574
> 44d9e52977a1b9 Mustafa Ismail 2021-06-02 575 static void
> irdma_destroy_virt_aeq(struct irdma_pci_f *rf)
> 44d9e52977a1b9 Mustafa Ismail 2021-06-02 576 {
> 44d9e52977a1b9 Mustafa Ismail 2021-06-02 577 struct irdma_aeq *aeq =
> &rf->aeq;
> 44d9e52977a1b9 Mustafa Ismail 2021-06-02 578 u32 pg_cnt =
> DIV_ROUND_UP(aeq->mem.size, PAGE_SIZE);
> 44d9e52977a1b9 Mustafa Ismail 2021-06-02 @579 dma_addr_t *pg_arr =
> (dma_addr_t *)aeq->palloc.level1.addr;
I think this is because a u64 addr is typecasted to dma_addr_t type ptr which could be of different size based on arch.
I will inspect and send a fix.
> 44d9e52977a1b9 Mustafa Ismail 2021-06-02 580
> 44d9e52977a1b9 Mustafa Ismail 2021-06-02 581
> irdma_unmap_vm_page_list(&rf->hw, pg_arr, pg_cnt);
> 44d9e52977a1b9 Mustafa Ismail 2021-06-02 582 irdma_free_pble(rf-
> >pble_rsrc, &aeq->palloc);
> 44d9e52977a1b9 Mustafa Ismail 2021-06-02 583 vfree(aeq->mem.va);
> 44d9e52977a1b9 Mustafa Ismail 2021-06-02 584 }
> 44d9e52977a1b9 Mustafa Ismail 2021-06-02 585
>
> :::::: The code at line 579 was first introduced by commit
> :::::: 44d9e52977a1b90b0db1c7f8b197c218e9226520 RDMA/irdma: Implement
> device initialization definitions
>
> :::::: TO: Mustafa Ismail <mustafa.ismail@intel.com>
> :::::: CC: Jason Gunthorpe <jgg@nvidia.com>
>
> ---
> 0-DAY CI Kernel Test Service, Intel Corporation
> https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org
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