Le Sun, 28 Sep 2008 16:25:56 +0200, Philippe Gerum <[EMAIL PROTECTED]> a
écrit:
> stephane ancelot wrote:
>> Hi,
>> I have the following kernel bug, when using a string name in
>> rt_sem_create. using NULL as name do not report this problem.
>>
>> BUG: unable to handle kernel paging request at virtual address de82a268
>> printing eip: c025d51a *pde = 1dd3e067 *pte =
>> Oops: [#1] PREEMPT
>> Modules linked in: xx(P) elok_s(P) e100 mii
>>
>
> You did not specify the Xenomai version in use. Looking at this output,
> you may
> want to search the bug in your proprietary module code first; it seems
> that you
> passed a string laid into the data segment of a module that has been
> unloaded,
> without removing the semaphore it had initially created.
>
Hi,
You are right, the semaphore was created in a thread meanwhile a bad coded
init module was unloading it. (return missing in init routine ) thanks.
Best Regards
Steph
>> Pid: 4, comm: events/0 Tainted: P(2.6.24.2-ipipe #3)
>> EIP: 0060:[] EFLAGS: 00010246 CPU: 0
>> EIP is at strlen+0xa/0x20
>> EAX: EBX: 8124 ECX: EDX: de82a268
>> ESI: de82a268 EDI: de82a268 EBP: 0001 ESP: ddc27e8c
>> DS: 007b ES: 007b FS: GS: SS: 0068
>> Process events/0 (pid: 4, ti=ddc26000 task=ddc19ab0 task.ti=ddc26000)<0>
>> I-pipe domain Linux
>> Stack: ddc27ebc c01e445b dde783c0 c0257d2a dde78140 de82a268 de82a268
>> c016e7a0
>> c048aebc c01e46d4 0001 dde78140 c04fbac4 c016338c
>> 0200
>> 007b 0002 dde783c0
>> dde78140
>> Call Trace:
>> [] proc_create+0x4b/0x110
>> [] idr_get_new+0xa/0x30
>> [] __sem_read_proc+0x0/0x130
>> [] create_proc_entry+0x44/0x90
>> [] registry_proc_callback+0xa1c/0xb00
>> [] update_curr+0x71/0x100
>> [] update_curr+0xf8/0x100
>> [] set_next_entity+0x1f/0x50
>> [] registry_proc_callback+0x0/0xb00
>> [] run_workqueue+0xb6/0x1a0
>> [] schedule+0x1df/0x3d0
>> [] worker_thread+0x6d/0xa0
>> [] autoremove_wake_function+0x0/0x50
>> [] worker_thread+0x0/0xa0
>> [] kthread+0x42/0x70
>> [] kthread+0x0/0x70
>> [] kernel_thread_helper+0x7/0x1c
>> ===
>> Code: 00 56 89 c6 89 d0 88 c4 ac 38 e0 74 09 84 c0 75 f7 be 01 00 00 00
>> 89
>> f0 48 5e c3 8d b6 00 00 00 00 57 b9 ff ff ff ff 89 c7 31 c0 ae f7
>> d1
>> 49 5f 89 c8 c3 8d b6 00 00 00 00 8d bc 27 00 00 00
>> EIP: [] strlen+0xa/0x20 SS:ESP 0068:ddc27e8c
>> ---[ end trace 614a6309c2874abe ]---
>>
>> Best regards
>> S.Ancelot
>>
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>
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