I captured this log message with a serial console this time. I still can't reproduce it though, which is annoying.
After rebooting from this one, /bin/mkdir and /bin/zsh were hosed. Udev doesn't like starting up without the ability to make directories. This looks like one problem causing the other - but, I don't know enough to tell. Any assistance would be appreciated :) If you need any more information about this, I'm on both lkml and reiserfs-list, or you can email me. Thanks, Anthony Martinez BUG: ------------[ cut here ]------------ kernel BUG at mm/slab.c:2839! invalid operand: 0000 [#1] PREEMPT Modules linked in: rfcomm l2cap bluetooth ipt_state ip_conntrack iptable_filter ip_tables tun nsc_ircc lp thermal fan button processor ac battery hostap_crypt_wep mousedev evdev irtty_sir sir_dev irda crc_ccitt parport_pc parport pcspkr hostap_pci hostap snd_intel8x0m snd_intel8x0 snd_ac97_codec snd_pcm_oss snd_mixer_oss snd_pcm snd_timer snd soundcore snd_page_alloc i2c_i801 hw_random uhci_hcd usbcore e100 mii ohci1394 yenta_socket rsrc_nonstatic befs nls_iso8859_1 nls_cp437 sr_mod sbp2 scsi_mod ieee1394 psmouse nvram thinkpad cpufreq_userspace speedstep_ich freq_table speedstep_lib CPU: 0 EIP: 0060:[<c0138b82>] Not tainted VLI EFLAGS: 00010002 (2.6.13.4-coffee) EIP is at cache_reap+0xba/0x182 eax: dff6f89c ebx: dff6f880 ecx: 00000005 edx: 00000003 esi: c6873fc0 edi: 00000002 ebp: dff29f70 esp: dff29f60 ds: 007b es: 007b ss: 0068 Process events/0 (pid: 3, threadinfo=dff28000 task=dff52020) Stack: dff6f8f0 c043e9c4 00000297 c043e9c0 dff29fc0 c01256d7 00000000 c0138ac8 00000000 00000001 00000000 dff52148 00010000 00000000 00000000 dff52020 c0114b3f 00100100 00200200 ffffffff ffffffff dff28000 dff1ff60 dff6b680 Call Trace: [<c0103bd1>] show_stack+0x78/0x83 [<c0103d26>] show_registers+0x130/0x1a2 [<c0103ee4>] die+0xcc/0x14e [<c0103fd4>] do_trap+0x6e/0x8a [<c010421f>] do_invalid_op+0x84/0x8e [<c010384b>] error_code+0x4f/0x54 [<c01256d7>] worker_thread+0x178/0x20b [<c0128d18>] kthread+0x6d/0x9b [<c01012f5>] kernel_thread_helper+0x5/0xb Code: 00 00 00 00 e9 81 00 00 00 6b 4b 3c 05 8b 53 40 01 ca 4a 89 d0 31 d2 f7 f1 89 c7 8b 73 1c 8d 43 1c 39 c6 74 65 83 7e 10 00 74 08 <0f> 0b 17 0b d7 1d 31 c0 8b 16 8b 46 04 89 42 04 89 10 c7 06 00 <6>note: events/0[3] exited with preempt_count 1 Unable to handle kernel NULL pointer dereference at virtual address 00000001 printing eip: c019bde6 *pde = 00000000 Oops: 0002 [#2] PREEMPT Modules linked in: rfcomm l2cap bluetooth ipt_state ip_conntrack iptable_filter ip_tables tun nsc_ircc lp thermal fan button processor ac battery hostap_crypt_wep mousedev evdev irtty_sir sir_dev irda crc_ccitt parport_pc parport pcspkr hostap_pci hostap snd_intel8x0m snd_intel8x0 snd_ac97_codec snd_pcm_oss snd_mixer_oss snd_pcm snd_timer snd soundcore snd_page_alloc i2c_i801 hw_random uhci_hcd usbcore e100 mii ohci1394 yenta_socket rsrc_nonstatic befs nls_iso8859_1 nls_cp437 sr_mod sbp2 scsi_mod ieee1394 psmouse nvram thinkpad cpufreq_userspace speedstep_ich freq_table speedstep_lib CPU: 0 EIP: 0060:[<c019bde6>] Not tainted VLI EFLAGS: 00010282 (2.6.13.4-coffee) EIP is at reiserfs_free_jh+0x29/0x59 eax: dcd559c4 ebx: dcd559bc ecx: c10c9c00 edx: 00000001 esi: c6873f60 edi: e08510d4 ebp: c2139d6c esp: c2139d64 ds: 007b es: 007b ss: 0068 Process pdflush (pid: 16521, threadinfo=c2138000 task=c6417a20) Stack: c6873f60 00000000 c2139e10 c019c0b7 c6873f60 c483fadc c2139d9c c01312bd dff60b88 c2139d9c c0131308 c10f0ee0 c10f0ee0 00000050 c2139dbc 00000046 00000000 00001000 c2139de8 c014c673 d4dc514c d4dc514c dd54ea1c dd54ea4c Call Trace: [<c0103bd1>] show_stack+0x78/0x83 [<c0103d26>] show_registers+0x130/0x1a2 [<c0103ee4>] die+0xcc/0x14e [<c01134df>] do_page_fault+0x447/0x5ca [<c010384b>] error_code+0x4f/0x54 [<c019c0b7>] write_ordered_buffers+0x105/0x1fc [<c019c390>] flush_commit_list+0xeb/0x38f [<c01a015b>] do_journal_end+0x7c1/0x7e9 [<c019f278>] journal_end_sync+0x5e/0x65 [<c0190bc1>] reiserfs_sync_fs+0x32/0x58 [<c0190bf4>] reiserfs_write_super+0xd/0x11 [<c014fb1a>] sync_supers+0x79/0xf2 [<c0136431>] wb_kupdate+0x24/0xda [<c0136c6e>] __pdflush+0x102/0x1cb [<c0136d56>] pdflush+0x1f/0x21 [<c0128d18>] kthread+0x6d/0x9b [<c01012f5>] kernel_thread_helper+0x5/0xb Code: c9 c3 55 89 e5 56 53 8b 75 08 8b 5e 24 85 db 74 43 c7 46 24 00 00 00 00 c7 43 04 00 00 00 00 8d 43 08 8b 4b 08 8b 50 04 89 51 04 <89> 0a 89 43 08 89 40 04 53 e8 00 ca f9 ff a1 a4 0d 44 c0 5b 85 Badness in do_exit at kernel/exit.c:787 [<c0103bf2>] dump_stack+0x16/0x1a [<c0119d1f>] do_exit+0x3c/0x3ba [<c0103f66>] do_trap+0x0/0x8a [<c01134df>] do_page_fault+0x447/0x5ca [<c010384b>] error_code+0x4f/0x54 [<c019c0b7>] write_ordered_buffers+0x105/0x1fc [<c019c390>] flush_commit_list+0xeb/0x38f [<c01a015b>] do_journal_end+0x7c1/0x7e9 [<c019f278>] journal_end_sync+0x5e/0x65 [<c0190bc1>] reiserfs_sync_fs+0x32/0x58 [<c0190bf4>] reiserfs_write_super+0xd/0x11 [<c014fb1a>] sync_supers+0x79/0xf2 [<c0136431>] wb_kupdate+0x24/0xda [<c0136c6e>] __pdflush+0x102/0x1cb [<c0136d56>] pdflush+0x1f/0x21 [<c0128d18>] kthread+0x6d/0x9b [<c01012f5>] kernel_thread_helper+0x5/0xb note: pdflush[16521] exited with preempt_count 1 ver_linux:Linux coffeehost 2.6.13.4-coffee #1 Sat Oct 15 19:22:20 MDT 2005 i686 GNU/Linux Gnu C 4.0.2 Gnu make 3.80 binutils 2.16.91 util-linux 2.12p mount 2.12p module-init-tools 3.2-pre9 e2fsprogs 1.38 reiserfsprogs 3.6.19 reiser4progs line pcmcia-cs 3.2.8 PPP 2.4.3 nfs-utils 1.0.7 Linux C Library 2.3.5 Dynamic linker (ldd) 2.3.5 Procps 3.2.5 Net-tools 1.60 Console-tools 0.2.3 Sh-utils 5.2.1 udev 070 Modules Loaded rfcomm l2cap bluetooth ipt_state ip_conntrack iptable_filter ip_tables tun nsc_ircc lp thermal fan button processor ac battery hostap_crypt_wep mousedev evdev irtty_sir sir_dev irda crc_ccitt parport_pc parport pcspkr hostap_pci hostap snd_intel8x0m snd_intel8x0 snd_ac97_codec snd_pcm_oss snd_mixer_oss snd_pcm snd_timer snd soundcore snd_page_alloc i2c_i801 hw_random uhci_hcd usbcore e100 mii ohci1394 yenta_socket rsrc_nonstatic befs nls_iso8859_1 nls_cp437 sr_mod sbp2 scsi_mod ieee1394 psmouse nvram thinkpad cpufreq_userspace speedstep_ich freq_table speedstep_lib