static int genmem_mmap(struct file *pFile, struct vm_area_struct *pVma)
{
   struct aim_mem_device *pInst;
   int ret;

   /* get private data */
   pInst = (struct aim_mem_device*)(pFile->private_data);

 ....[Some checks omitted here ]...

   /* mapping */
   pVma->vm_page_prot = pgprot_noncached(pVma->vm_page_prot);
   ret = remap_pfn_range(
         pVma,                                             /* user vma to map to */
         pVma->vm_start,                                   /* target user address to start at */
         pVma->vm_pgoff + ((pInst->res.start)>>PAGE_SHIFT),/* physical address of kernel memory */
         pVma->vm_end - pVma->vm_start,                    /* size of map area */
         pVma->vm_page_prot                                /* page protection flags for this mapping */
         );

 ....[Some checks omitted here ]...


   return ret;
}

# [  509.376525] esmartd[1505]: unhandled alignment fault (11) at 0x7f80b24032, esr 0x92000021
[  509.384674] pgd = ffffffc0341bf000
[  509.388038] [7f80b24032] *pgd=0000000034bba003[  509.392283] , *pud=0000000034bba003
, *pmd=0000000033c24003[  509.397740] , *pte=01e800003f000f43
[  509.401224]
[  509.402717]
[  509.404174] CPU: 0 PID: 1505 Comm: esmartd Not tainted 4.9.0-aim2-00054-g1ccf631 #183
[  509.411995] Hardware name: ZynqMP AIM APXX (DT)
[  509.416850] task: ffffffc034136e80 task.stack: ffffffc033e14000
[  509.422757] PC is at 0x7f80bafe94
[  509.426042] LR is at 0x401200
[  509.429001] pc : [<0000007f80bafe94>] lr : [<0000000000401200>] pstate: 00000000
[  509.436384] sp : 0000007ffffe0040
[  509.439676] x29: 0000007ffffe0040 x28: 0000000000000000
[  509.444963] x27: 0000000000000000 x26: 0000000000000000
[  509.450262] x25: 0000000000000000 x24: 0000000000000000
[  509.455553] x23: 0000000000000000 x22: 0000000000000000
[  509.460848] x21: 0000000000000000 x20: 0000000000000000
[  509.466147] x19: 00000000004038d8 x18: 0000000000000001
[  509.471438] x17: 0000007f80bafe40 x16: 0000000000414350
[  509.476733] x15: 0000007f80cab030 x14: 00007a672e726174
[  509.482027] x13: 2e6574616470752d x12: 3031393378787061
[  509.487323] x11: 0000001600000000 x10: 0074005300200033
[  509.492617] x9 : 00320020006c0065 x8 : 0064006f00000042
[  509.497911] x7 : 0000000145534d54 x6 : 000000000ccb80c0
[  509.503207] x5 : 0000000000000003 x4 : 0000000000000000
[  509.508502] x3 : 0000000000000000 x2 : 0000000000000002
[  509.513796] x1 : 0000007f80b24042 x0 : 000000000ccb8080
[  509.519090]