Hi, Is it possible to post the code you wrote to this list? Rami
On 10/7/06, Chava Leviatan <[EMAIL PROTECTED]> wrote:
> 2) just for the sake of deubuggin : can you allocate one skb only in > that module, comment the skb_free() call, perform insmod and > afterwards rmmod, and see if it crashes ? Did that already ... Further more I have allocated 100 skb, did not free them and the rmmod worked well - no crashes. And I have also allocated the skb, and free it from the thread itself - that also worked fine ----- Original Message ----- From: "Rami Rosen" <[EMAIL PROTECTED]> To: "Chava Leviatan" <[EMAIL PROTECTED]> Cc: <linux-il@linux.org.il> Sent: Saturday, October 07, 2006 7:46 AM Subject: Re: netif_rx and dev stack > Chava , >> , when i do the rmmod the machine crashes , i.e., performs a reset !! > > 1) - when there is such reset , is there antyhing written in the kernel > log ? > can you please check and post it ? > > 2) just for the sake of deubuggin : can you allocate one skb only in > that module, comment the skb_free() call, perform insmod and > afterwards rmmod, and see if it crashes ? > > Regards, > Rami Rosen > > On 10/5/06, Chava Leviatan <[EMAIL PROTECTED]> wrote: >> >> >> Hello, >> >> >> I have a 2.4.18 machine with 2 ethernet interfaces. >> >> I am trying to simulate a scenario where packet has just arrived from one >> interface and going to the other. >> >> I have build a kernel module that runs a kernel thread. That kernel >> thread >> is invoked every second, and then >> it does the following ; >> >> - alloc_skb >> - Fill the proper sk_buff fields >> - Fill IP header fields >> - Fill ICMP header fields >> - skb_put with the data length >> - call to netif_rx >> >> I am able to see the packets with ethreal (on the correct interface). I >> have >> also put some debug prints into the >> kernel code (dev.c) and I am able to see those packets getting into >> __kfree_skb. >> >> However, when i do the rmmod the machine crashes , i.e., performs a reset >> !! >> When I remove the netif_rx the rmmod returns ok. >> >> Can anyone please explain why does it crash ?? >> >> >> Any help is apreciated, >> Thanks, >> Chava >> >
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