abrt version: 2.0.3
architecture:   x86_64
cmdline:        ro root=/dev/mapper/VolGrp0-f15_root rd_LVM_LV=VolGrp0/f15_root rd_LVM_LV=VolGrp0/swap rd_NO_LUKS rd_NO_MD rd_NO_DM LANG=en_US.UTF-8 SYSFONT=latarcyrheb-sun16 KEYTABLE=us crashkernel=128M rhgb quiet
comment:        no idea    
component:      kernel
kernel:         2.6.40.6-0.fc15.x86_64
kernel_tainted: 128
kernel_tainted_long: Kernel has oopsed before.
os_release:     Fedora release 15 (Lovelock)
package:        kernel
reason:         [188722.021626] BUG: unable to handle kernel NULL pointer dereference at 0000000000000008
time:           Sun Oct 23 03:55:04 2011

backtrace:
:[188722.021626] BUG: unable to handle kernel NULL pointer dereference at 0000000000000008
:[188722.022002] IP: [<ffffffff81487683>] mutex_trylock+0x12/0x32
:[188722.022002] PGD 0 
:[188722.022002] Oops: 0002 [#1] SMP 
:[188722.022002] CPU 0 
:[188722.022002] Modules linked in: tcp_lp sha256_generic dm_crypt ebtable_nat ebtables ipt_MASQUERADE iptable_nat nf_nat xt_CHECKSUM iptable_mangle bridge stp llc ppdev parport_pc lp parport sunrpc cpufreq_ondemand acpi_cpufreq mperf ip6t_REJECT nf_conntrack_ipv6 nf_defrag_ipv6 ip6table_filter bnep ip6_tables nf_conntrack_ipv4 nf_defrag_ipv4 bluetooth rfkill xt_state nf_conntrack w83627ehf coretemp adt7475 hwmon_vid fuse snd_usb_audio snd_usbmidi_lib snd_rawmidi pwc videodev media v4l2_compat_ioctl32 snd_hda_codec_realtek snd_hda_intel snd_hda_codec snd_hwdep snd_seq snd_seq_device iTCO_wdt i2c_i801 iTCO_vendor_support microcode snd_pcm r8169 mii snd_timer snd soundcore snd_page_alloc ipv6 btrfs zlib_deflate libcrc32c pata_acpi uas ata_generic usb_storage pata_jmicron nouveau ttm drm_kms_helper drm i2c_algo_bit i2c_core mxm_wmi wmi video [last unloaded: scsi_wait_scan]
:[188722.022002] 
:[188722.022002] Pid: 25, comm: kswapd0 Not tainted 2.6.40.6-0.fc15.x86_64 #1 To Be Filled By O.E.M. To Be Filled By O.E.M./P43Twins1600
:[188722.022002] RIP: 0010:[<ffffffff81487683>]  [<ffffffff81487683>] mutex_trylock+0x12/0x32
:[188722.022002] RSP: 0000:ffff8800c267d9d0  EFLAGS: 00010246
:[188722.022002] RAX: 0000000000000001 RBX: ffff8800b5bf67e0 RCX: 0000000000000001
:[188722.022002] RDX: 0000000000000000 RSI: 0000000000000001 RDI: 0000000000000008
:[188722.022002] RBP: ffff8800c267d9d0 R08: ffffea0002236c60 R09: fffffffffffffff6
:[188722.022002] R10: 00000000000157dc R11: 0000000000015788 R12: ffff8800b5bf67e1
:[188722.022002] R13: ffffea0002236c38 R14: 0000000000000008 R15: ffff8800c267dc08
:[188722.022002] FS:  0000000000000000(0000) GS:ffff8800cbc00000(0000) knlGS:0000000000000000
:[188722.022002] CS:  0010 DS: 0000 ES: 0000 CR0: 000000008005003b
:[188722.022002] CR2: 0000000000000008 CR3: 0000000001a03000 CR4: 00000000000006f0
:[188722.022002] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
:[188722.022002] DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000400
:[188722.022002] Process kswapd0 (pid: 25, threadinfo ffff8800c267c000, task ffff8800c621c590)
:[188722.022002] Stack:
:[188722.022002]  ffff8800c267da00 ffffffff811026b5 ffffea0002236c38 0000000000000000
:[188722.022002]  ffff8800c267dd98 0000000000000000 ffff8800c267dab0 ffffffff81102959
:[188722.022002]  ffff8800c267da80 ffffffff812236dd 0000000000000031 0000000002236c00
:[188722.022002] Call Trace:
:[188722.022002]  [<ffffffff811026b5>] page_lock_anon_vma+0x49/0xc0
:[188722.022002]  [<ffffffff81102959>] page_referenced+0xb2/0x259
:[188722.022002]  [<ffffffff812236dd>] ? submit_bio+0xde/0xfd
:[188722.022002]  [<ffffffff810e32f8>] ? test_set_page_writeback+0xeb/0xfd
:[188722.022002]  [<ffffffff810e9c2c>] shrink_page_list+0x1a2/0x6f4
:[188722.022002]  [<ffffffff81120cf6>] ? mem_cgroup_del_lru+0x1d/0x21
:[188722.022002]  [<ffffffff810ea596>] shrink_inactive_list+0x230/0x399
:[188722.022002]  [<ffffffff810e3c94>] ? determine_dirtyable_memory+0x1a/0x23
:[188722.022002]  [<ffffffff810eadd5>] shrink_zone+0x426/0x569
:[188722.022002]  [<ffffffff810ebb4d>] balance_pgdat+0x2c1/0x574
:[188722.022002]  [<ffffffff81242483>] ? __bitmap_weight+0x34/0x80
:[188722.022002]  [<ffffffff810ec0b4>] kswapd+0x2b4/0x2f0
:[188722.022002]  [<ffffffff8107064a>] ? remove_wait_queue+0x3a/0x3a
:[188722.022002]  [<ffffffff810ebe00>] ? balance_pgdat+0x574/0x574
:[188722.022002]  [<ffffffff8106ff5b>] kthread+0x84/0x8c
:[188722.022002]  [<ffffffff8148fe24>] kernel_thread_helper+0x4/0x10
:[188722.022002]  [<ffffffff8106fed7>] ? kthread_worker_fn+0x148/0x148
:[188722.022002]  [<ffffffff8148fe20>] ? gs_change+0x13/0x13
:[188722.022002] Code: 66 66 66 66 90 48 c7 47 18 00 00 00 00 f0 ff 07 7f 05 e8 b0 02 00 00 5d c3 55 48 89 e5 66 66 66 66 90 b9 01 00 00 00 31 d2 89 c8 <f0> 0f b1 17 89 c1 31 c0 ff c9 75 12 65 48 8b 04 25 80 cd 00 00 
:[188722.022002] RIP  [<ffffffff81487683>] mutex_trylock+0x12/0x32
:[188722.022002]  RSP <ffff8800c267d9d0>
:[188722.022002] CR2: 0000000000000008
:[188722.060086] ---[ end trace 3d00489a51c792f5 ]---