Re: [U-Boot] Hanging in kmalloc of nand_scan_tail() function

18 Sep 2009


      On Fri, Sep 18, 2009 at 01:17:48PM +0900, J.Hwan.Kim wrote:
...
Hi, everyone
I'm using U-boot 2009-03.
U-boot hangs in nand_init() function.
I found the routine kmalloc in nand_scan_tail() cause U-boot reset.
int nand_scan_tail(struct mtd_info *mtd)
{
    int i;
    struct nand_chip *chip = mtd->priv;
if (!(chip->options & NAND_OWN_BUFFERS)) {
    chip->buffers = kmalloc(sizeof(*chip->buffers), GFP_KERNEL);   
}

if (!chip->buffers)
    return -ENOMEM;
          ........


U-boot displays message as follows :
NAND:  data abort
pc : [<31f902b4>]\0x09   lr : [<31fa084c>]
sp : 31f5bee0  ip : 00000076\0x09 fp : 00000000
r10: 00001188  r9 : 00020000\0x09 r8 : 31f5bfdc
r7 : 00000001  r6 : 00000000\0x09 r5 : 31fa42b8  r4 : 31fa4364
r3 : 31fa052c  r2 : 00000064\0x09 r1 : 00000063  r0 : ffffffff
Flags: NzCv  IRQs off  FIQs off  Mode SVC_32
Resetting CPU ...
Where the malloc function is defined?
Why the kmalloc() hangs the u-boot?
Is there any configuation definition needed?
What specific source lines do 0x31f902b4 and 0x31fa0840 correspond to,
and can you disassemble the former?
-Scott

Re: [U-Boot] Hanging in kmalloc of nand_scan_tail() function

Scott Wood