Perhaps I should also add my compile invoke (Codesourcery) : arm-none-linux-gnueabi-gcc -Wall -c -O hello_timer.c -o hello_timer -v And and an example of a segmentation fault I get on occasion : Timer module Exited Unable to handle kernel NULL pointer dereference at virtual address 00000062 pgd = c3450000 [00000062] *pgd=23cfd031, *pte=00000000, *ppte=00000000 Internal error: Oops: 1 [#1] PREEMPT Modules linked in: [last unloaded: hello_timer] CPU: 0 Tainted: G W (2.6.26.3-olimex #9) PC is at free_module+0x38/0xe0 LR is at free_module+0x20/0xe0 pc : [<c005ff20>] lr : [<c005ff08>] psr: 20000013 sp : c3469f20 ip : c3469f20 fp : c3469f34 r10: 00900081 r9 : c3468000 r8 : c002530c r7 : 00000880 r6 : 00000000 r5 : c3468000 r4 : bf0045e0 r3 : a0000013 r2 : c03959e0 r1 : c03959e0 r0 : 0000005e Flags: nzCv IRQs on FIQs on Mode SVC_32 ISA ARM Segment user Control: 0005317f Table: 23450000 DAC: 00000015 Process rmmod (pid: 1408, stack limit = 0xc3468268) Stack: (0xc3469f20 to 0xc346a000) 9f20: bf0045e0 c3468000 c3469fa4 c3469f38 c00618d0 c005fef8 c3469f84 6c6c6568 9f40: 69745f6f 0072656d c0159db4 c0036f50 00000000 00000000 00001000 ffffffff 9f60: 4012f63c 00020fb8 4012f63c 00000880 00000000 0012e000 bf0045e0 00000880 9f80: c3469f84 00000000 beb9ad70 beb98558 beb98570 00000081 00000000 c3469fa8 9fa0: c0024b00 c00616fc beb9ad70 beb98558 beb98558 00000880 0000000c 00000000 9fc0: beb9ad70 beb98558 beb98570 00000003 00000880 00000000 00000000 beb9ade0 9fe0: 400d4130 beb98550 00009028 400d4134 60000010 beb98558 00000000 00000000 Backtrace: [<c005fee8>] (free_module+0x0/0xe0) from [<c00618d0>] (sys_delete_module +0x1e4/0x20c) r5:c3468000 r4:bf0045e0 [<c00616ec>] (sys_delete_module+0x0/0x20c) from [<c0024b00>] (ret_fast_syscall+0x0/0x2c) r7:00000081 r6:beb98570 r5:beb98558 r4:beb9ad70 Code: e121f003 e5940140 e3500000 0a000001 (e5901004) ---[ end trace d30994dbcef2d362 ]--- Segmentation fault sam9-l9260:/mnt/kris/olimex# sam9-l9260:/mnt/kris/olimex# lsmod Module Size Used by [here the target hangs....] Best regards, Kris On Thu, 2009-01-08 at 09:09 +1100, Microbit_Ubuntu wrote: -- To unsubscribe from this list: send an email with "unsubscribe kernelnewbies" to ecartis@xxxxxxxxxxxx Please read the FAQ at http://kernelnewbies.org/FAQ
