Hello, 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 # ping 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. Whose the fault? Any pending patch to be applies to kernel tree? Compiler? Thanks in advance
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