-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 On Mon, 16 Feb 2004 07:25:41 +0000 (GMT) pankaj chauhan <chauhan_ait@yahoo.co.in> wrote: [snip] >HERE the system freezes and i get some messages on console some of >them are : > >*** >[<c020b490>] ip_rcv_finish [kernel] ><0> kernel panic : Aii killing interrupt handler >In interrupt handler not syncing >*** > >all these operations i am doing in a routine registered at >NF_IP_PRE_ROUTING hook of netfilter frame work of linux . Taking a look at your dump it can be easily seen your system freezes while receiving a packet (ip_rcv_finish) and you confirmed that by saying it's due to an NF_IP_PRE_ROUTING netfilter hook. Well there's just a problem... when you receive a packet you're in interrupt context. This means you simply can't sleep since sleeping is allowed just if you're working in process context. Calling kmem_cache_alloc with SLAB_KERNEL priority could easily lead to this situation. And if sleeping occurs havoc is guaranteed. Try using SLAB_ATOMIC instead. Regards. - -- Angelo Dell'Aera 'buffer' Antifork Research, Inc. http://buffer.antifork.org PGP information in e-mail header -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.2.4 (GNU/Linux) iD8DBQFANNZ3pONIzxnBXKIRAl39AJ4whXVPoHqYPpJ+loISRB3mocHmxACfQM2n HVqe1bzj5srmQTLHHB+6Aho= =q4Xy -----END PGP SIGNATURE----- -- Kernelnewbies: Help each other learn about the Linux kernel. Archive: http://mail.nl.linux.org/kernelnewbies/ FAQ: http://kernelnewbies.org/faq/
