I have two driver modules that I am trying to load into the
2.2.10-rmk2 kernel on an ebsa285. Each module was ported to linux and tested
on an ix86 platform. Under ARM linux each driver fails to load due to
an exception. The exception appears to be related to dereferencing a NULL
pointer. In following kernel oops message the PC appears to be in memset.
The code is not that broken that we are passing a NULL pointer to memset.
The call to memset is something like memset(&foo, 0, sizeof(struct foo));
where foo is declared statically in one of the *.c files of the driver.
Any clues ? It almost appears as if the .data section is not getting
relocated into the kernel address space when I do an insmod, but that's
just wild speculation at this point.
--
[EMAIL PROTECTED]
Inet Technologies Inc.
Plano, Texas
Unable to handle kernel paging request at virtual address 00002600
memmap = 00BCC000, pgd = c0bcc000
*pgd = 00946001, *pmd = 00946001, *pte = 00000000, *ppte = 00000000
Internal error: Oops: 0
CPU: 0
pc : [<c00f2c08>] lr : [<00000000>]
sp : c0b8fec0 ip : 0000000f fp : c0b8fed8
r10: 400fd554 r9 : ffffffea r8 : c1817048
r7 : c181f23c r6 : 00000000 r5 : 00000000 r4 : 00002600
r3 : 00002600 r2 : 00000000 r1 : 00000000 r0 : 00002600
Flags: nzCv IRQs on FIQs on Mode SVC_32 Segment user
Control: BCC171 Table: 00BCC171 DAC: 00000015
Process insmod (pid: 288, stackpage=c0b8f000)
Stack:
c0b8fea0: 00000000 c00f2c08
20000013 ffffffff
c0b8fec0: c1817b5c 00002600 c181f030 c0b8fef4 c0b8fedc c181869c
c1817b44 c181f030
c0b8fee0: c181ed18 00000000 c0b8ff0c c0b8fef8 c1818758 c1818628
c1818fec 000000fe
c0b8ff00: c0b8ff28 c0b8ff10 c181be28 c18186f4 00000000 c1817000
00000000 c0b8ffb0
c0b8ff20: c0b8ff2c c00286dc c181bdc0 00000003 c1817048 c0b8ff3c
c1817048 c0de0000
c0b8ff40: c0d9a000 00000048 c0120eb8 c1817048 0000823c 00000000
00000000 00000000
c0b8ff60: 00000000 00000000 00000000 00000000 00000000 00000000
00000000 00000000
c0b8ff80: 00000000 00000000 00000000 02047510 c0017f28 00000080
c0b8e000 c0b8fff4
c0b8ffa0: 0200f020 00000000 c0b8ffb4 c0017da0 c00280ec 02047510
0200f020 02047510
c0b8ffc0: 0200f020 02047510 02047510 020100f0 0200effc c1817000
0000823c 0200f020
c0b8ffe0: 400fd554 bffffcd4 bffffcd8 bffffcc4 02003314 02005b8c
60000010 0200f020
Backtrace:
Function entered at [<c1817b38>] from [<c181869c>]
r5 = c181f030
r4 = 00002600
Function entered at [<c181861c>] from [<c1818758>]
r6 = 00000000
r5 = c181ed18
r4 = c181f030
Function entered at [<c18186e8>] from [<c181be28>]
r4 = 000000fe
Function entered at [<c181bdb4>] from [<c00286dc>]
r6 = 00000000
r5 = c1817000
r4 = 00000000
Function entered at [<c00280e0>] from [<c0017da0>]
r9 = 0200f020
r8 = c0b8fff4
r7 = c0b8e000
r6 = 00000080
r5 = c0017f28
r4 = 02047510
Code: e1a0e001 e25cc004 (a8a34002) a8a34002 a8a34002
