Hello, I am having problems with ULOG target on SMP hosts, it crashes kernel after some time (in my case - about once a day, and I can't directly reproduce it). I use it for accounting with ipcad (http://ipcad.sf.net) on debian Sarge. ULOG rule -j ULOG --ulog-prefix "FORWARD" --ulog-cprange 80 --ulog-qthreshold 50 is inserted into FORWARD, INPUT and OUTPUT chains. OOPS output from linux 2.6.15 is below. ipt_ULOG module was loaded with nlbufsiz=65536. Problem remains on some older 2.6 kernels (at least on 2.6.12) and with default nlbufsiz=4096, but the same configuration works with one processor, even on the same host with maxcpus=1 set at boot. Maybe there is a simple solution, like modifying CPU affinity? With best regards, Iwan A. Vasilyev [via@xxxxxxx] ======= cut here ======= Unable to handle kernel NULL pointer dereference at virtual address 00000044 printing eip: c8925048 *pde = 00000000 Oops: 0002 [#1] SMP Modules linked in: ipt_ULOG netconsole ide_cd i2c_piix4 8139too shpchp pci_hotplug 8139cp 3c59x i2c_core CPU: 0 EIP: 0060:[<c8925048>] Not tainted VLI EFLAGS: 00010297 (2.6.15-gw-p1) EIP is at ulog_send+0x48/0x90 [ipt_ULOG] eax: 00000000 ebx: c8926ce0 ecx: 00000001 edx: 00000000 esi: 00000020 edi: 00000000 ebp: c07bc000 esp: c07bdf30 ds: 007b es: 007b ss: 0068 Process swapper (pid: 0, threadinfo=c07bc000 task=c070bb20) Stack: 00000000 00000000 00000000 c1104e20 c8925090 c89250a4 00000100 c012aa59 00000000 00000000 002e8bef 00000000 c0866c48 c0866c48 c070bb20 00000001 c07b5f48 c080ff20 00000000 c01267f4 0000000a 00000046 c080d380 c080d300 Call Trace: [<c8925090>] ulog_timer+0x0/0x20 [ipt_ULOG] [<c89250a4>] ulog_timer+0x14/0x20 [ipt_ULOG] [<c012aa59>] run_timer_softirq+0xd9/0x1a0 [<c01267f4>] __do_softirq+0xd4/0xf0 [<c0126845>] do_softirq+0x35/0x40 [<c01038cc>] apic_timer_interrupt+0x1c/0x24 [<c0100d51>] default_idle+0x41/0x70 [<c0100e20>] cpu_idle+0x80/0x90 [<c07be95a>] start_kernel+0x18a/0x1d0 [<c07be360>] unknown_bootoption+0x0/0x1c0 Code: e0 6c 92 c8 8b 53 0c 8d 43 0c 85 d2 75 5c 83 bf e0 6c 92 c8 01 76 09 8b 43 04 66 c7 40 04 03 00 8b 43 08 8d 4e 01 be 20 00 00 00 48 44 8b 53 08 89 0c 24 a1 60 71 92 c8 31 c9 89 74 24 04 e8 Kernel panic - not syncing: Fatal exception in interrupt ======= cut here =======
