Messages in this thread | | | Subject | tcp_sendmsg in scheduler queue | Date | Fri, 11 Nov 2005 12:32:12 -0800 | From | "Seva Tonkonoh" <> |
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Hello,
I am developing a kernel module that schedules a task to run in the scheduler queue (kernel is 2.4), and inside the task there is a call to tcp_sendmsg().
I have intermittent kernel crashes which seem to happen in alloc_skb() (below is the output from ksymoops).
Is there anything wrong with calling tcp_sendmsg() from a task in the scheduler queue?
Thanks, Seva Tonkonoh
>>EIP; c012f10f <kmem_cache_alloc_batch+67/e0> <=====
>>ecx; c1c0da28 <_end+18a5138/11ce9710> >>esi; c1c0da28 <_end+18a5138/11ce9710>
Trace; c012f2ea <kmem_cache_alloc+72/13c> Trace; c01f996c <alloc_skb+cc/1bc> Trace; c0213348 <tcp_sendmsg+23c/1140> Trace; f899e5f8 <END_OF_CODE+268d1001/????> Trace; c0115233 <schedule_timeout+83/a0> Trace; c011d2ec <__run_task_queue+64/70> Trace; c01250d7 <context_thread+137/1d0> Trace; c0105684 <kernel_thread+28/38>
Code; c012f10f <kmem_cache_alloc_batch+67/e0> 00000000 <_EIP>: Code; c012f10f <kmem_cache_alloc_batch+67/e0> <===== 0: 8b 44 81 18 mov 0x18(%ecx,%eax,4),%eax <===== Code; c012f113 <kmem_cache_alloc_batch+6b/e0> 4: 03 59 0c add 0xc(%ecx),%ebx Code; c012f116 <kmem_cache_alloc_batch+6e/e0> 7: 89 41 14 mov %eax,0x14(%ecx) Code; c012f119 <kmem_cache_alloc_batch+71/e0> a: 83 f8 ff cmp $0xffffffff,%eax Code; c012f11c <kmem_cache_alloc_batch+74/e0> d: 75 23 jne 32 <_EIP+0x32> c012f141 <kmem_cache_alloc_batch+99/e0> Code; c012f11e <kmem_cache_alloc_batch+76/e0> f: 8b 41 04 mov 0x4(%ecx),%eax Code; c012f121 <kmem_cache_alloc_batch+79/e0> 12: 8b 11 mov (%ecx),%edx - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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