I have the same problem, random freeze, now the kern.log is an evidence
Linux version 2.6.38-8-generic (buildd@allspice) (gcc version 4.5.2 (Ubuntu/Linaro 4.5.2-8ubuntu3) ) #42-Ubuntu SMP Mon Apr 11 03:31:24 UTC 2011 (Ubuntu 2.6.38-8.42-generic 2.6.38.2)
(prefix removed)
__alloc_pages_slowpath: 12 callbacks suppressed swapper: page allocation failure. order:2, mode:0x4020 Pid: 0, comm: swapper Tainted: P 2.6.38-8-generic #42-Ubuntu Call Trace: <IRQ> [<ffffffff811147c4>] ? __alloc_pages_nodemask+0x604/0x840 [<ffffffff811155eb>] ? free_compound_page+0x1b/0x20 [<ffffffff8115306b>] ? kmalloc_large_node+0x6b/0xc0 [<ffffffff811585a1>] ? __kmalloc_node_track_caller+0x151/0x1a0 [<ffffffff814c5c5d>] ? dev_alloc_skb+0x1d/0x40 [<ffffffff814c5473>] ? __alloc_skb+0x83/0x170 [<ffffffff814c5c5d>] ? dev_alloc_skb+0x1d/0x40 [<ffffffffa0539cf6>] ? rtl8192_rx_normal+0x2c6/0x470 [r8192se_pci] [<ffffffffa053a2d1>] ? rtl8192_irq_rx_tasklet+0x21/0x70 [r8192se_pci] [<ffffffff8106cc43>] ? tasklet_action+0x73/0x120 [<ffffffff8106d538>] ? __do_softirq+0xa8/0x1c0 [<ffffffff81030518>] ? ack_apic_level+0x78/0x1a0 [<ffffffff8100cf1c>] ? call_softirq+0x1c/0x30 [<ffffffff8100ea45>] ? do_softirq+0x65/0xa0 [<ffffffff8106d755>] ? irq_exit+0x85/0x90 [<ffffffff815caec6>] ? do_IRQ+0x66/0xe0 [<ffffffff815c3213>] ? ret_from_intr+0x0/0x15 <EOI> [<ffffffff8136080f>] ? arch_local_irq_enable+0x8/0xd [<ffffffff8108ec35>] ? sched_clock_idle_wakeup_event+0x15/0x20 [<ffffffff813615d4>] ? acpi_idle_enter_bm+0x219/0x251 [<ffffffff814a3bda>] ? cpuidle_idle_call+0xaa/0x1b0 [<ffffffff8100a266>] ? cpu_idle+0xa6/0xf0 [<ffffffff815a9205>] ? rest_init+0x75/0x80 [<ffffffff81acac8b>] ? start_kernel+0x3f5/0x400 [<ffffffff81aca388>] ? x86_64_start_reservations+0x132/0x136 [<ffffffff81aca253>] ? zap_identity_mappings+0x3e/0x41 [<ffffffff81aca458>] ? x86_64_start_kernel+0xcc/0xdb
I have the same problem, random freeze, now the kern.log is an evidence
Linux version 2.6.38-8-generic (buildd@allspice)
(gcc version 4.5.2 (Ubuntu/Linaro 4.5.2-8ubuntu3) )
#42-Ubuntu SMP Mon Apr 11 03:31:24 UTC 2011
(Ubuntu 2.6.38-8.42-generic 2.6.38.2)
(prefix removed)
__alloc_ pages_slowpath: 12 callbacks suppressed 7c4>] ? __alloc_ pages_nodemask+ 0x604/0x840 155eb>] ? free_compound_ page+0x1b/ 0x20 5306b>] ? kmalloc_ large_node+ 0x6b/0xc0 585a1>] ? __kmalloc_ node_track_ caller+ 0x151/0x1a0 c5c5d>] ? dev_alloc_ skb+0x1d/ 0x40 c5473>] ? __alloc_ skb+0x83/ 0x170 c5c5d>] ? dev_alloc_ skb+0x1d/ 0x40 39cf6>] ? rtl8192_ rx_normal+ 0x2c6/0x470 [r8192se_pci] 3a2d1>] ? rtl8192_ irq_rx_ tasklet+ 0x21/0x70 [r8192se_pci] 6cc43>] ? tasklet_ action+ 0x73/0x120 6d538>] ? __do_softirq+ 0xa8/0x1c0 30518>] ? ack_apic_ level+0x78/ 0x1a0 0cf1c>] ? call_softirq+ 0x1c/0x30 0ea45>] ? do_softirq+ 0x65/0xa0 6d755>] ? irq_exit+0x85/0x90 caec6>] ? do_IRQ+0x66/0xe0 c3213>] ? ret_from_ intr+0x0/ 0x15 80f>] ? arch_local_ irq_enable+ 0x8/0xd 8ec35>] ? sched_clock_ idle_wakeup_ event+0x15/ 0x20 615d4>] ? acpi_idle_ enter_bm+ 0x219/0x251 a3bda>] ? cpuidle_ idle_call+ 0xaa/0x1b0 0a266>] ? cpu_idle+0xa6/0xf0 a9205>] ? rest_init+0x75/0x80 cac8b>] ? start_kernel+ 0x3f5/0x400 ca388>] ? x86_64_ start_reservati ons+0x132/ 0x136 ca253>] ? zap_identity_ mappings+ 0x3e/0x41 ca458>] ? x86_64_ start_kernel+ 0xcc/0xdb
swapper: page allocation failure. order:2, mode:0x4020
Pid: 0, comm: swapper Tainted: P 2.6.38-8-generic #42-Ubuntu
Call Trace:
<IRQ> [<ffffffff81114
[<ffffffff811
[<ffffffff811
[<ffffffff811
[<ffffffff814
[<ffffffff814
[<ffffffff814
[<ffffffffa05
[<ffffffffa05
[<ffffffff810
[<ffffffff810
[<ffffffff810
[<ffffffff810
[<ffffffff810
[<ffffffff810
[<ffffffff815
[<ffffffff815
<EOI> [<ffffffff81360
[<ffffffff810
[<ffffffff813
[<ffffffff814
[<ffffffff810
[<ffffffff815
[<ffffffff81a
[<ffffffff81a
[<ffffffff81a
[<ffffffff81a