On Sun, 04 Sep 2011 20:49:42 +0200 Anders <aeriksson2@xxxxxxxxx> wrote: > I've got kdump setup to collect oopes. I found this in the log. Not sure > what it's related to. > > <4>[47900.533010] [<ffffffff810ab79f>] ? > mem_cgroup_count_vm_event+0x15/0x67 > <4>[47900.533010] [<ffffffff810987e5>] ? handle_mm_fault+0x3b/0x1e8 > <4>[47900.533010] [<ffffffff81049bb3>] ? sched_clock_local+0x13/0x76 > <4>[47900.533010] [<ffffffff8101bdb0>] ? do_page_fault+0x31a/0x33f > <4>[47900.533010] [<ffffffff81022b80>] ? check_preempt_curr+0x36/0x62 > <4>[47900.533010] [<ffffffff8104bb23>] ? ktime_get_ts+0x65/0xa6 > <4>[47900.533010] [<ffffffff810bfd2c>] ? > poll_select_copy_remaining+0xce/0xed > <4>[47900.533010] [<ffffffff814c4b4f>] ? page_fault+0x1f/0x30 I'll check memcg but...not sure what parts in above log are garbage. At quick glance, mem_cgroup_count_vm_event() does enough NULL check but faulted address was.. > <0>[47900.533010] CR2: ffffc5217e257cf0 This seems not NULL referencing. #define VMALLOC_START _AC(0xffffc90000000000, UL) #define VMALLOC_END _AC(0xffffe8ffffffffff, UL) This is not vmalloc area...hmm. could you show your disassemble of mem_cgroup_count_vm_event() ? and .config ? Thanks, -Kame > -Anders > > > <0>[47900.532505] Oops: 0000 [#1] PREEMPT SMP > <4>[47900.532618] CPU 1 > <4>[47900.532668] Modules linked in: saa7134_alsa tda1004x saa7134_dvb > videobuf_dvb dvb_core ir_kbd_i2c tda827x snd_hda_codec_realtek tda8290 > tuner saa7134 videobuf_dma_sg snd_hda_intel videobuf_core v4l2_common > videodev snd_hda_codec ir_lirc_codec lirc_dev sg ir_sony_decoder > ir_jvc_decoder v4l2_compat_ioctl32 tveeprom ir_rc6_decoder rc_imon_mce > ir_rc5_decoder atiixp rtc_cmos ir_nec_decoder imon rc_core parport_pc > parport i2c_piix4 pcspkr snd_hwdep asus_atk0110 > <4>[47900.533010] > <4>[47900.533010] Pid: 23858, comm: mencoder Not tainted 3.0.3-dirty #37 > System manufacturer System Product Name/M2A-VM HDMI > <4>[47900.533010] RIP: 0010:[<ffffffff81097d18>] [<ffffffff81097d18>] > handle_pte_fault+0x24/0x70a > <4>[47900.533010] RSP: 0000:ffff880024c27db8 EFLAGS: 00010296 > <4>[47900.533010] RAX: 0000000000000cf0 RBX: ffff88006c3b2a68 RCX: > ffffc5217e257cf0 > <4>[47900.533010] RDX: 000000000059effe RSI: ffff88006c3b2a68 RDI: > ffff88006d6d2ac0 > <4>[47900.533010] RBP: ffffc5217e257cf0 R08: ffff880024d3b010 R09: > 0000000000000028 > <4>[47900.533010] R10: ffffffff81049bb3 R11: ffff880077c10a80 R12: > ffff88006d6d2ac0 > <4>[47900.533010] R13: ffff880025ee4050 R14: ffff88006c3b2a68 R15: > 000000000059effe > <4>[47900.533010] FS: 00007fe0ee868700(0000) GS:ffff880077c80000(0000) > knlGS:0000000000000000 > <4>[47900.533010] CS: 0010 DS: 0000 ES: 0000 CR0: 000000008005003b > <4>[47900.533010] CR2: ffffc5217e257cf0 CR3: 000000006eb49000 CR4: > 00000000000006e0 > <4>[47900.533010] DR0: 0000000000000000 DR1: 0000000000000000 DR2: > 0000000000000000 > <4>[47900.533010] DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: > 0000000000000400 > <4>[47900.533010] Process mencoder (pid: 23858, threadinfo > ffff880024c26000, task ffff880025ee4050) > <0>[47900.533010] Stack: > <4>[47900.533010] 0000000000004000 0000000000000000 0000000000000000 > 0000000000004000 > <4>[47900.533010] 0000000000000028 0000000000000000 ffff880024d3b010 > ffffffff810ab79f > <4>[47900.533010] 0000000000000000 000000000059effe 000000000059effe > ffffffff810987e5 > <0>[47900.533010] Call Trace: > <4>[47900.533010] [<ffffffff810ab79f>] ? > mem_cgroup_count_vm_event+0x15/0x67 > <4>[47900.533010] [<ffffffff810987e5>] ? handle_mm_fault+0x3b/0x1e8 > <4>[47900.533010] [<ffffffff81049bb3>] ? sched_clock_local+0x13/0x76 > <4>[47900.533010] [<ffffffff8101bdb0>] ? do_page_fault+0x31a/0x33f > <4>[47900.533010] [<ffffffff81022b80>] ? check_preempt_curr+0x36/0x62 > <4>[47900.533010] [<ffffffff8104bb23>] ? ktime_get_ts+0x65/0xa6 > <4>[47900.533010] [<ffffffff810bfd2c>] ? > poll_select_copy_remaining+0xce/0xed > <4>[47900.533010] [<ffffffff814c4b4f>] ? page_fault+0x1f/0x30 > <0>[47900.533010] Code: 41 5d 41 5e 41 5f c3 41 57 49 89 d7 41 56 41 55 > 41 54 49 89 fc 55 48 89 cd 53 48 89 f3 48 83 ec 68 4c 89 44 24 30 44 89 > 4c 24 20 <4c> 8b 31 44 89 f0 25 ff 0f 00 00 a9 01 01 00 00 0f 85 22 06 00 > <1>[47900.533010] RIP [<ffffffff81097d18>] handle_pte_fault+0x24/0x70a > <4>[47900.533010] RSP <ffff880024c27db8> > <0>[47900.533010] CR2: ffffc5217e257cf0 > > > -- > To unsubscribe, send a message with 'unsubscribe linux-mm' in > the body to majordomo@xxxxxxxxx. For more info on Linux MM, > see: http://www.linux-mm.org/ . > Fight unfair telecom internet charges in Canada: sign http://stopthemeter.ca/ > Don't email: <a href=mailto:"dont@xxxxxxxxx";> email@xxxxxxxxx </a> > -- To unsubscribe, send a message with 'unsubscribe linux-mm' in the body to majordomo@xxxxxxxxx. For more info on Linux MM, see: http://www.linux-mm.org/ . Fight unfair telecom internet charges in Canada: sign http://stopthemeter.ca/ Don't email: <a href=mailto:"dont@xxxxxxxxx";> email@xxxxxxxxx </a>