[451698.257343] ------------[ cut here ]------------ [451698.257354] WARNING: at arch/x86/kernel/apic/ipi.c:109 default_send_IPI_mask_logical+0xaf/0xe0() [451698.257356] Hardware name: G33M-S2L [451698.257357] empty IPI mask [451698.257358] Modules linked in: xt_tcpudp nf_conntrack_ipv4 nf_defrag_ipv4 xt_state nf_conntrack ipv6 iptable_filter ip_tables x_tables lp parport_pc parport i915 drm_kms_helper processor thermal drm i2c_algo_bit video thermal_sys 8139too button serio_raw rtc_cmos rtc_core rtc_lib psmouse evdev intel_agp hwmon r8169 agpgart iTCO_wdt iTCO_vendor_support sg output mii i2c_i801 i2c_core [451698.257387] Pid: 4429, comm: clamscan Not tainted 2.6.35.7-smp #1 [451698.257389] Call Trace: [451698.257393] [<c101ce3f>] ? default_send_IPI_mask_logical+0xaf/0xe0 [451698.257398] [<c103e7b1>] warn_slowpath_common+0x81/0xa0 [451698.257401] [<c101ce3f>] ? default_send_IPI_mask_logical+0xaf/0xe0 [451698.257407] [<c103e873>] warn_slowpath_fmt+0x33/0x40 [451698.257410] [<c101ce3f>] default_send_IPI_mask_logical+0xaf/0xe0 [451698.257413] [<c101af54>] native_send_call_func_ipi+0x44/0x60 [451698.257416] [<c106c556>] smp_call_function_many+0x156/0x1a0 [451698.257420] [<c10b5120>] ? drain_local_pages+0x0/0x20 [451698.257423] [<c10b5120>] ? drain_local_pages+0x0/0x20 [451698.257425] [<c106c5c6>] smp_call_function+0x26/0x30 [451698.257428] [<c10442bf>] on_each_cpu+0x1f/0x40 [451698.257431] [<c10b30d9>] drain_all_pages+0x19/0x20 [451698.257433] [<c10b47d5>] __alloc_pages_nodemask+0x2d5/0x560 [451698.257437] [<c10d9dde>] alloc_page_vma+0x5e/0x130 [451698.257441] [<c10c97fe>] handle_mm_fault+0x68e/0xcf0 [451698.257445] [<c102f876>] ? __dequeue_entity+0x26/0x40 [451698.257448] [<c10341b6>] ? finish_task_switch+0x36/0xa0 [451698.257452] [<c1024fcb>] do_page_fault+0x15b/0x3a0 [451698.257454] [<c10444a9>] ? irq_exit+0x39/0x80 [451698.257458] [<c19994a0>] ? smp_apic_timer_interrupt+0x60/0x8f [451698.257461] [<c1024e70>] ? do_page_fault+0x0/0x3a0 [451698.257463] [<c19991ab>] error_code+0x73/0x78 [451698.257467] [<c1990000>] ? detect_ht+0x150/0x1a0 [451698.257469] ---[ end trace d728240fe17b968e ]---
See also bug 15705.