Hi Jesus,
You don't like the answers you got on the arm.linux.kernel
mainling list for this same question :-)
Jesus Lopez wrote:
I must write some code for a custom ethernet-like stuff. I'm using snull
code from LDD3 to do some prior testing. I'm working on an AT91rm9200
running linux-2.6.14-uc0, arm-linux-gcc-3.3.2. I can compile the module
with no trouble, insmod it and bring both interfaces up but when I ping
any address kernel crashes:
# ifconfig sn0 192.168.1.67 <http://192.168.1.67/>
# ping 192.168.1.15 <http://192.168.1.15/>
PING 192.168.1Unable to handle kernel paging request at virtual address
ffffffff
.pgd = c1a10000
1[ffffffff] *pgd=200020315, *pte=00000000 , *ppte=00000000(
1Internal error: Oops: 817 [#1]
Modules linked in: snull
CPU: 0
PC is at snull_header+0x5c/0xac [snull]
LR is at neigh_connected_output+0xa4
/0x11c
pc : [<bf000778>] lr : [<c01c47e4>] Not tainted
sp : c1c7bbfc ip : c1c7bc2c fp : c1c7bc28
r10: c03978c4 r9 : 00000040 r8 : 00000000
r7 : c039fc00 r6 : 00000800 r5 : c03d7a20 r4 : fffffff3
r3 : c03978c4 r2 : 00000800 r1 : 00000000 r0 : 00000008
Flags: nZCv IRQs on FIQs on Mode SVC_32 Segment user
Control: C000717F Table: 21A10000 DAC: 00000015
Process ping (pid: 761, stack limit = 0xc1c7a194)
Stack: (0xc1c7bbfc to 0xc1c7c000)
bbe0:
c1c7bc4c
bc00: c1c7bc0c c03d7a20 00000000 c03978a0 c1bc8040 c038be80 00000000
c1c7bc4c
bc20: c1c7bc2c c01c47e4 bf00072c 00000000 00000054 c03d7a20 00000000
c038be80
bc40: c1c7bc84 c1c7bc50 c01d85f0 c01c4750 c039fc00 c01dadc0 80000000
c03d7a20
bc60: c1bc8040 00000040 c03d7a20 c1bc8040 00000040 c1bc8040 c1c7bcc0
c1c7bc88
bc80: c01da84c c01d8358 c039fc00 c01dad8c 80000000 c03d7a20 00000000
c1c7beac
bca0: 0f01a8c0 c1bc8040 c1bc8040 00000000 00000040 c1c7bda0 c1c7bcc4
c01f64c8
bcc0: c01da414 00000000 c1c7bd6c c038be80 00000000 00000000 c038be80
00000000
bce0: 00000000 0f01a8c0 00000000 00000000 00000000 00000000 00000000
00000000
bd00: 00000000 00000000 00000001 00000000 00000000 00000000 00000000
00000000
bd20: 00000000 00000000 00000000 0f01a8c0 4301a8c0 00000000 00000000
00000000
bd40: 00000000 00000000 00000000 00000000 00000001 00000008 00000000
00000000
bd60: 00000000 00000000 00000000 0f01a8c0 00000000 00000000 c1bc8040
c1c7be0c
bd80: c1c7beac 00000040 0004ec08 c1c7a000 00000010 c1c7bdc0 c1c7bda4
c01ffad8
bda0: c01f61b4 c1c7beac 00000000 00000000 00000040 c1c7be9c c1c7bdc4
c01b2bd4
bdc0: c01ffa8c c0042b4c c0042ec4 c1c7be10 00000040 c1c6f080 0000002b
00000000
bde0: c1c7beac c0042d0c c0042afc c1c7be0c c1c7bdfc c0023db0 c0042ccc
ffffffff
be00: c1c7be98 c1c7be10 c0022984 c0023d50 4007cc60 00000000 00000001
ffffffff
be20: 00000000 c001e1a8 00000000 0000002b 00000000 00000000 4007c000
c1c97d60
be40: 00000000 00000000 c00294b4 c002b5b0 80000013 ffffffff c001c1fc
00000100
be60: 00000000 c1c97d60 c00537e0 c1c7be6c c1c7be6c 00000010 00000010
c1c7bec8
be80: c1c7bdc4 c1c6f080 c1c7bec8 00000000 c1c7bf6c c1c7bea0 c01b4160
c01b2b2c
bea0: bed58c90 00000040 00000000 c1c7bec8 00000010 c1c7bea0 00000001
00000000
bec0: 00000000 00000000 00000002 0f01a8c0 00000000 00000000 c1a11000
c0fef1d4
bee0: 00000000 0004ecbc 60000013 c02ed240 c02eed9c 0000000a 00000001
c1c7a000
bf00: 4001bd18 c1c7bf28 c1c7bf14 c003a310 c003a27c 00000000 c0fe2000
c1c7bf40
bf20: c1c7bf2c c00fe4c0 c003a2f8 00000000 c02ed240 c1c7bf50 c1c7bf44
c0112668
bf40: c00fe470 c1c7bf68 00000000 0000000b 00000040 00000066 c0022e64
bed58cc8
bf60: c1c7bfa4 c1c7bf70 c01b4990 c01b40bc 0004ec08 00000010 00000003
bed58c90
bf80: 00000040 00000000 0004ec08 00000010 bed58c90 00000000 00000000
c1c7bfa8
bfa0: c0022ce0 c01b483c bed58c90 c0023d50 0000000b bed58c78 00000040
00000000
bfc0: bed58c90 00000000 00000040 0004ec1c 00000001 0004ecbc bed58cc8
bed58cf8
bfe0: 4010f8f0 bed58c78 000275f4 4010f900 60000010 0000000b de312472
0ef2bccf
Backtrace:
[<bf00071c>] (snull_header+0x0/0xac [snull]) from [<c01c47e4>]
(neigh_connected_output+0xa4/0x11c)
[<c01c4740>] (neigh_connected_output+0x0/0x11c) from [<c01d85f0>]
(ip_output+0x2a8/0x31c)
r6 = C038BE80 r5 = 00000000 r4 = C03D7A20
[<c01d8348>] (ip_output+0x0/0x31c) from [<c01da84c>]
(ip_push_pending_frames+0x448/0x574)
r7 = C1BC8040 r6 = 00000040 r5 = C1BC8040 r4 = C03D7A20
[<c01da404>] (ip_push_pending_frames+0x0/0x574) from [<c01f64c8>]
(raw_sendmsg+0x324/0x410)
[<c01f61a4>] (raw_sendmsg+0x0/0x410) from [<c01ffad8>]
(inet_sendmsg+0x5c/0x64)
[<c01ffa7c>] (inet_sendmsg+0x0/0x64) from [<c01b2bd4>]
(sock_sendmsg+0xb8/0xd4)
r7 = 00000040 r6 = 00000000 r5 = 00000000 r4 = C1C7BEAC
[<c01b2b1c>] (sock_sendmsg+0x0/0xd4) from [<c01b4160>]
(sys_sendto+0xb4/0xc8)
r6 = 00000000 r5 = C1C7BEC8 r4 = C1C6F080
[<c01b40ac>] (sys_sendto+0x0/0xc8) from [<c01b4990>]
(sys_socketcall+0x164/0x1f4)
[<c01b482c>] (sys_socketcall+0x0/0x1f4) from [<c0022ce0>]
(ret_fast_syscall+0x0/0x2c)
r5 = 00000000 r4 = BED58C90
Code: 3a000012 e5954080 e1a00426 e2581000 (e5c4000c)
92<0>Kernel panic - not syncing: Aiee, killing interrupt handler!
. 168.1.15): 56 data bytes
Any idea what's wrong? Source code is obviously right.
Why is it obviously right?
Whose the fault?
Any pending patch to be applies to kernel tree?
Lots, it then becomes 2.6.22 (or pick any version in between :-)
Compiler?
Yes, there are newer versions of the toolchain, as pointed out on
the arm list, 3.3.2 is known old and buggy.
Why not use the newer binary tool chain package for uClinux-dist, at
http://ftp.snapgear.org/pub/snapgear/tools/arm-linux/arm-linux-tools-20061213.tar.gz
Regards
Greg
------------------------------------------------------------------------
Greg Ungerer -- Chief Software Dude EMAIL: [EMAIL PROTECTED]
SnapGear -- a Secure Computing Company PHONE: +61 7 3435 2888
825 Stanley St, FAX: +61 7 3891 3630
Woolloongabba, QLD, 4102, Australia WEB: http://www.SnapGear.com
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