Hello! Not sure if this helps any further, but I get such NULL pointer dereferences quite often too, here is one of them. Would it help if I activated reiser4 debugging for a better crash report, or do you already know where to look at? [18400.907871] BUG: unable to handle kernel NULL pointer dereference at 000000000000000e [18400.907876] IP: [<ffffffff811f4b23>] jnode_of_page+0x33/0x290 [18400.907881] PGD 130294067 PUD 130af1067 PMD 0 [18400.907883] Oops: 0002 [#1] PREEMPT SMP [18400.907886] Modules linked in: fuse iptable_filter ipt_REDIRECT xt_tcpudp xt_owner iptable_nat nf_nat nf_conntrack_ipv4 nf_defrag_ipv4 nf_conntrack ip_tables x_tables snd_hda_codec_hdmi joydev snd_hda_codec_via snd_hda_intel snd_hda_codec snd_hwdep snd_pcm snd_page_alloc snd_timer snd soundcore edac_core edac_mce_amd mperf kvm_amd kvm psmouse sp5100_tco fglrx(PO) microcode serio_raw i2c_piix4 pcspkr k10temp evdev i2c_core amd_iommu_v2 atl1c button wmi processor jfs dm_mod hid_generic usbhid hid sd_mod ata_generic pata_acpi ohci_hcd pata_atiixp ahci libahci ehci_hcd libata usbcore scsi_mod usb_common [18400.907908] CPU 5 [18400.907911] Pid: 749, comm: flush-8:32 Tainted: P O 3.6.4-1- ARCH #1 MSI MS-7599/870-G45 (MS-7599) [18400.907913] RIP: 0010:[<ffffffff811f4b23>] [<ffffffff811f4b23>] jnode_of_page+0x33/0x290 [18400.907916] RSP: 0018:ffff8801aece58b0 EFLAGS: 00010202 [18400.907917] RAX: ffff8801848df020 RBX: 0000000000000002 RCX: 000000000000000d [18400.907919] RDX: 00000000022b8695 RSI: 000000000000001e RDI: ffffea0005015540 [18400.907920] RBP: ffff8801aece58f0 R08: 0000000000000039 R09: ffff8801a49a48e0 [18400.907921] R10: 0000000000000000 R11: 0000000000000042 R12: ffffea0005015540 [18400.907921] R13: ffff88011dea3010 R14: ffff88011dea2ea8 R15: ffff8801b45e0000 [18400.907923] FS: 00007fa7b53c1740(0000) GS:ffff8801bfd40000(0000) knlGS:000000000915b830 [18400.907924] CS: 0010 DS: 0000 ES: 0000 CR0: 000000008005003b [18400.907925] CR2: 000000000000000e CR3: 0000000187571000 CR4: 00000000000007e0 [18400.907926] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [18400.907927] DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000400 [18400.907929] Process flush-8:32 (pid: 749, threadinfo ffff8801aece4000, task ffff8801b45e0000) [18400.907929] Stack: [18400.907930] 0000000000000000 0000000000000021 0000000000000100 0000000000000000 [18400.907933] ffffea0005015540 ffff88011dea3010 ffff88011dea2ea8 ffff8801b45e0000 [18400.907935] ffff8801aece5940 ffffffff8121d3de ffffea0005015540 ffff8801b45e0000 [18400.907937] Call Trace: [18400.907940] [<ffffffff8121d3de>] find_or_create_extent+0x3e/0x220 [18400.907942] [<ffffffff8120078e>] ? reiser4_grab_space+0x4e/0xa0 [18400.907944] [<ffffffff8121da0b>] capture_anonymous_pages+0x1fb/0x3e0 [18400.907946] [<ffffffff8121dd53>] writepages_unix_file+0x163/0x480 [18400.907949] [<ffffffff81213eaf>] reiser4_writepages+0x2f/0x40 [18400.907951] [<ffffffff81128981>] do_writepages+0x21/0x50 [18400.907954] [<ffffffff811a8ffb>] __writeback_single_inode.isra.31 +0x3b/0x190 [18400.907956] [<ffffffff8107a037>] ? bit_waitqueue+0x17/0xc0 [18400.907958] [<ffffffff811a94b5>] generic_writeback_sb_inodes +0x215/0x410 [18400.907961] [<ffffffff8120face>] reiser4_writeback_inodes+0x8e/0x150 [18400.907963] [<ffffffff811aa251>] writeback_sb_inodes+0xa1/0xc0 [18400.907965] [<ffffffff811aa30f>] __writeback_inodes_wb+0x9f/0xd0 [18400.907967] [<ffffffff811aa653>] wb_writeback+0x313/0x340 [18400.907969] [<ffffffff811aa8e6>] wb_do_writeback+0x1c6/0x270 [18400.907971] [<ffffffff811aaa23>] bdi_writeback_thread+0x93/0x2d0 [18400.907973] [<ffffffff811aa990>] ? wb_do_writeback+0x270/0x270 [18400.907974] [<ffffffff81079a03>] kthread+0x93/0xa0 [18400.907977] [<ffffffff814e7c44>] kernel_thread_helper+0x4/0x10 [18400.907979] [<ffffffff81079970>] ? kthread_freezable_should_stop +0x70/0x70 [18400.907981] [<ffffffff814e7c40>] ? gs_change+0x13/0x13 [18400.907982] Code: 48 89 5d d8 4c 89 65 e0 4c 89 6d e8 4c 89 75 f0 4c 89 7d f8 66 66 66 66 90 49 89 fc e8 27 8d 01 00 49 8b 5c 24 30 48 85 db 74 1d <f0> ff 43 0c 48 89 d8 4c 8b 65 e0 48 8b 5d d8 4c 8b 6d e8 4c 8b [18400.907999] RIP [<ffffffff811f4b23>] jnode_of_page+0x33/0x290 [18400.908000] RSP <ffff8801aece58b0> [18400.908001] CR2: 000000000000000e [18400.908003] ---[ end trace fa9f5dad422f21f6 ]--- Regards, Tobias -- To unsubscribe from this list: send the line "unsubscribe reiserfs-devel" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
