From mboxrd@z Thu Jan 1 00:00:00 1970 From: Arend Freije Subject: Reiser4: BUG: unable to handle kernel NULL pointer dereference Date: Tue, 27 Nov 2012 14:01:05 +0100 Message-ID: <50B4B991.2050604@inn.nl> Mime-Version: 1.0 Content-Transfer-Encoding: 7bit Return-path: Sender: reiserfs-devel-owner@vger.kernel.org List-ID: Content-Type: text/plain; charset="us-ascii"; format="flowed" To: reiserfs-devel@vger.kernel.org Hi, Since the adaption of Reiser4 for VFS my system has become less stable. The filesystems get corrupted, files lost. e.g./etc/passwd recently, :( , kernel Oopses and NULL pointer dereferences in the kernel. I converted the Reiser4 partitions to ext4, and the system has become stable. Mount options were pretty straightforward, with noatime, and no encryption nor compression. Unfortunately I have no time to play around with debugging, so I'll stick to ext4 for the moment. The NULL pointer dereference traces look like this: ov 26 11:31:05 afdesk02 kernel: [15780.132525] BUG: unable to handle kernel NULL pointer dereference at 0000000000000052 Nov 26 11:31:05 afdesk02 kernel: [15780.132655] IP: [] _raw_spin_lock+0x18/0x40 Nov 26 11:31:05 afdesk02 kernel: [15780.132752] PGD 1132f4067 PUD 11655b067 PMD 0 Nov 26 11:31:05 afdesk02 kernel: [15780.132841] Oops: 0002 [#4] PREEMPT SMP Nov 26 11:31:05 afdesk02 kernel: [15780.132921] Modules linked in: ipv6 af_packet dm_mod radeonfb fb_ddc intel_agp intel_gtt rtc joydev hid_sunplus usbhid hid radeon 8250_pnp ppdev parport_pc powernow_k8 ttm mperf drm_kms_helper ohci_hcd 8250 snd_hda_codec_hdmi serial_core ata_generic pata_acpi drm kvm snd_hda_codec_via parport processor button ghash_clmulni_intel snd_hda_intel sg xhci_hcd pata_atiixp snd_hda_codec i2c_algo_bit r8169 cfbcopyarea ehci_hcd evdev i2c_piix4 cfbimgblt cfbfillrect pcspkr snd_hwdep psmouse shpchp snd_pcm usbcore serio_raw cryptd pci_hotplug usb_common snd_timer snd mii soundcore microcode snd_page_alloc unix Nov 26 11:31:05 afdesk02 kernel: [15780.134068] CPU 0 Nov 26 11:31:05 afdesk02 kernel: [15780.134104] Pid: 3779, comm: flush-9:1 Tainted: G D 3.6.4-reiser4 #1 System manufacturer System Product Name/M5A78L-M/USB3 Nov 26 11:31:05 afdesk02 kernel: [15780.134280] RIP: 0010:[] [] _raw_spin_lock+0x18/0x40 Nov 26 11:31:05 afdesk02 kernel: [15780.134406] RSP: 0018:ffff8801010d9af0 EFLAGS: 00010202 Nov 26 11:31:05 afdesk02 kernel: [15780.134485] RAX: 0000000000000100 RBX: ffffea0004169b40 RCX: 0000000000000000 Nov 26 11:31:05 afdesk02 kernel: [15780.134587] RDX: ffffea0004169b40 RSI: ffff8801010d9aa0 RDI: 0000000000000052 Nov 26 11:31:05 afdesk02 kernel: [15780.134688] RBP: ffff8801010d9af0 R08: 0000000000003280 R09: 0000000000000000 Nov 26 11:31:05 afdesk02 kernel: [15780.134789] R10: 0000000000000000 R11: 0000000000000006 R12: 0000000000000002 Nov 26 11:31:05 afdesk02 kernel: [15780.134889] R13: 0000000000000052 R14: ffff88010b762900 R15: ffff8801097cda20 Nov 26 11:31:05 afdesk02 kernel: [15780.134991] FS: 00007f27d0fec880(0000) GS:ffff88011ec00000(0000) knlGS:0000000000000000 Nov 26 11:31:05 afdesk02 kernel: [15780.135106] CS: 0010 DS: 0000 ES: 0000 CR0: 000000008005003b Nov 26 11:31:05 afdesk02 kernel: [15780.135198] CR2: 0000000000000052 CR3: 0000000113fc9000 CR4: 00000000000407f0 Nov 26 11:31:05 afdesk02 kernel: [15780.135300] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 Nov 26 11:31:05 afdesk02 kernel: [15780.135401] DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000400 Nov 26 11:31:05 afdesk02 kernel: [15780.135502] Process flush-9:1 (pid: 3779, threadinfo ffff8801010d8000, task ffff880119fa2520) Nov 26 11:31:05 afdesk02 kernel: [15780.135621] Stack: Nov 26 11:31:05 afdesk02 kernel: [15780.135654] ffff8801010d9ba0 ffffffff81197305 0000000000000001 ffff880100000000 Nov 26 11:31:05 afdesk02 kernel: [15780.135784] ffff8801010d9d10 0000000000001d70 ffff8801097cd8c8 ffff8801097cd7c0 Nov 26 11:31:05 afdesk02 kernel: [15780.135915] ffff880119fa2520 0000000000005079 ffff8801097cda10 ffff8801097cd838 Nov 26 11:31:05 afdesk02 kernel: [15780.136044] Call Trace: Nov 26 11:31:05 afdesk02 kernel: [15780.136088] [] writepages_unix_file+0x305/0x4e0 Nov 26 11:31:05 afdesk02 kernel: [15780.136183] [] reiser4_writepages+0x25/0x30 Nov 26 11:31:05 afdesk02 kernel: [15780.136271] [] do_writepages+0x1b/0x30 Nov 26 11:31:05 afdesk02 kernel: [15780.136353] [] __writeback_single_inode.clone.26+0x3e/0x130 Nov 26 11:31:05 afdesk02 kernel: [15780.136460] [] generic_writeback_sb_inodes+0x1d5/0x340 Nov 26 11:31:05 afdesk02 kernel: [15780.136559] [] reiser4_writeback_inodes+0x8d/0x140 Nov 26 11:31:05 afdesk02 kernel: [15780.136653] [] writeback_sb_inodes+0x8d/0xb0 Nov 26 11:31:05 afdesk02 kernel: [15780.136739] [] wb_writeback+0xd0/0x1e0 Nov 26 11:31:05 afdesk02 kernel: [15780.136819] [] wb_do_writeback+0x9c/0x1c0 Nov 26 11:31:05 afdesk02 kernel: [15780.136906] [] ? lock_timer_base.clone.30+0x36/0x70 Nov 26 11:31:05 afdesk02 kernel: [15780.137002] [] bdi_writeback_thread+0x8a/0x160 Nov 26 11:31:05 afdesk02 kernel: [15780.137091] [] ? wb_do_writeback+0x1c0/0x1c0 Nov 26 11:31:05 afdesk02 kernel: [15780.137177] [] ? wb_do_writeback+0x1c0/0x1c0 Nov 26 11:31:05 afdesk02 kernel: [15780.137265] [] kthread+0x96/0xa0 Nov 26 11:31:05 afdesk02 kernel: [15780.137338] [] kernel_thread_helper+0x4/0x10 Nov 26 11:31:05 afdesk02 kernel: [15780.137426] [] ? kthread_freezable_should_stop+0x60/0x60 Nov 26 11:31:05 afdesk02 kernel: [15780.137528] [] ? gs_change+0xb/0xb Nov 26 11:31:05 afdesk02 kernel: [15780.137601] Code: 48 89 e5 e8 7b fe ff ff c9 c3 90 90 90 90 90 90 90 90 90 55 65 48 8b 04 25 08 b8 00 00 48 89 e5 ff 80 44 e0 ff ff b8 00 01 00 00 66 0f c1 07 0f b6 d4 38 c2 74 0d 0f 1f 40 00 f3 90 0f b6 07 Nov 26 11:31:05 afdesk02 kernel: [15780.138344] RIP [] _raw_spin_lock+0x18/0x40 Nov 26 11:31:05 afdesk02 kernel: [15780.138441] RSP Nov 26 11:31:05 afdesk02 kernel: [15780.138495] CR2: 0000000000000052 Nov 26 11:31:05 afdesk02 kernel: [15780.138546] ---[ end trace 792199483cf446de ]--- Nov 26 11:30:14 afdesk02 kernel: [15729.205316] BUG: unable to handle kernel NULL pointer dereference at 00000000000002e3 Nov 26 11:30:14 afdesk02 kernel: [15729.211462] IP: [] rem_entry_cde+0x1e/0x110 Nov 26 11:30:14 afdesk02 kernel: [15729.217619] PGD 116519067 PUD 11651a067 PMD 0 Nov 26 11:30:14 afdesk02 kernel: [15729.223776] Oops: 0000 [#3] PREEMPT SMP Nov 26 11:30:14 afdesk02 kernel: [15729.229911] Modules linked in: ipv6 af_packet dm_mod radeonfb fb_ddc intel_agp intel_gtt rtc joydev hid_sunplus usbhid hid radeon 8250_pnp ppdev parport_pc powernow_k8 ttm mperf drm_kms_helper ohci_hcd 8250 snd_hda_codec_hdmi serial_core ata_generic pata_acpi drm kvm snd_hda_codec_via parport processor button ghash_clmulni_intel snd_hda_intel sg xhci_hcd pata_atiixp snd_hda_codec i2c_algo_bit r8169 cfbcopyarea ehci_hcd evdev i2c_piix4 cfbimgblt cfbfillrect pcspkr snd_hwdep psmouse shpchp snd_pcm usbcore serio_raw cryptd pci_hotplug usb_common snd_timer snd mii soundcore microcode snd_page_alloc unix Nov 26 11:30:14 afdesk02 kernel: [15729.243556] CPU 1 <4>[15729.243561] Pid: 3428, comm: Cache I/O Tainted: G D 3.6.4-reiser4 #1 System manufacturer System Product Name/M5A78L-M/USB3 Nov 26 11:30:14 afdesk02 kernel: [15729.243563] RIP: 0010:[] [] rem_entry_cde+0x1e/0x110 Nov 26 11:30:14 afdesk02 kernel: [15729.243570] RSP: 0018:ffff8800c325bd58 EFLAGS: 00010282 Nov 26 11:30:14 afdesk02 kernel: [15729.243571] RAX: 0000000000000270 RBX: ffff880119f0f250 RCX: 0000000000000000 Nov 26 11:30:14 afdesk02 kernel: [15729.243572] RDX: ffffffff81528660 RSI: 00000000000002df RDI: ffff880119f0f250 Nov 26 11:30:14 afdesk02 kernel: [15729.243574] RBP: ffff8800c325bdc8 R08: 0000000000000001 R09: ce00000000000000 Nov 26 11:30:14 afdesk02 kernel: [15729.243575] R10: a8000b97e7000000 R11: dead000000100100 R12: 00000000000002df Nov 26 11:30:14 afdesk02 kernel: [15729.243577] R13: ffff8800cf9f0200 R14: ffff880119f0f250 R15: 0000000000000c5b Nov 26 11:30:14 afdesk02 kernel: [15729.243579] FS: 00007f0468ffe700(0000) GS:ffff88011ec40000(0000) knlGS:0000000000000000 Nov 26 11:30:14 afdesk02 kernel: [15729.243581] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 Nov 26 11:30:14 afdesk02 kernel: [15729.243582] CR2: 00000000000002e3 CR3: 000000010b526000 CR4: 00000000000407e0 Nov 26 11:30:14 afdesk02 kernel: [15729.243583] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 Nov 26 11:30:14 afdesk02 kernel: [15729.243585] DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000400 Nov 26 11:30:14 afdesk02 kernel: [15729.243587] Process Cache I/O (pid: 3428, threadinfo ffff8800c325a000, task ffff880119872520) Nov 26 11:30:14 afdesk02 kernel: [15729.243587] Stack: Nov 26 11:30:14 afdesk02 kernel: [15729.243589] ffff8800c325bd68 ffff880112bc0d80 ffff8800c325bdb8 ffffffff81170abb Nov 26 11:30:14 afdesk02 kernel: [15729.243592] ffff880119f0f240 ffff880100000000 ffff8800c325bd98 ffff880112bc0d80 Nov 26 11:30:14 afdesk02 kernel: [15729.243596] ffff8800c325bda8 ffffffff811a3a0f ffff880119f0f250 00000000000002df Nov 26 11:30:14 afdesk02 kernel: [15729.243599] Call Trace: Nov 26 11:30:14 afdesk02 kernel: [15729.243601] [] ? jload_gfp+0xcb/0x1f0 Nov 26 11:30:14 afdesk02 kernel: [15729.243607] [] ? plugin_by_coord_node40+0x2f/0x40 Nov 26 11:30:14 afdesk02 kernel: [15729.243617] [] validate_extended_coord+0x57/0x80 Nov 26 11:30:14 afdesk02 kernel: [15729.243621] [] read_unix_file+0x3e8/0x520 Nov 26 11:30:14 afdesk02 kernel: [15729.243625] [] reiser4_read_careful+0x70/0x160 Nov 26 11:30:14 afdesk02 kernel: [15729.243629] [] vfs_read+0xc3/0x170 Nov 26 11:30:14 afdesk02 kernel: [15729.243632] [] sys_read+0x4c/0x90 Nov 26 11:30:14 afdesk02 kernel: [15729.243638] [] system_call_fastpath+0x16/0x1b Nov 26 11:30:14 afdesk02 kernel: [15729.243666] Code: ee 4c 89 f7 e8 34 d1 fc ff eb b7 66 90 55 48 89 e5 48 83 ec 70 4c 89 65 e8 49 89 f4 48 89 5d e0 4c 89 6d f0 4c 89 75 f8 49 89 fe <8b> 76 04 49 8b 7c 24 08 49 89 d5 bb 32 00 00 00 e8 3d 51 fd ff Nov 26 11:30:14 afdesk02 kernel: [15729.243670] RIP [] rem_entry_cde+0x1e/0x110 Nov 26 11:30:14 afdesk02 kernel: [15729.243671] RSP Nov 26 11:30:14 afdesk02 kernel: [15729.243672] CR2: 00000000000002e3 Nov 26 11:30:14 afdesk02 kernel: [15729.243826] ---[ end trace 792199483cf446dd ]--- Nov 26 11:31:05 afdesk02 kernel: [15780.132525] BUG: unable to handle kernel NULL pointer dereference at 0000000000000052 Nov 26 11:31:05 afdesk02 kernel: [15780.132655] IP: [] _raw_spin_lock+0x18/0x40 Nov 26 11:31:05 afdesk02 kernel: [15780.132752] PGD 1132f4067 PUD 11655b067 PMD 0 Nov 26 11:31:05 afdesk02 kernel: [15780.132841] Oops: 0002 [#4] PREEMPT SMP Nov 26 11:31:05 afdesk02 kernel: [15780.132921] Modules linked in: ipv6 af_packet dm_mod radeonfb fb_ddc intel_agp intel_gtt rtc joydev hid_sunplus usbhid hid radeon 8250_pnp ppdev parport_pc powernow_k8 ttm mperf drm_kms_helper ohci_hcd 8250 snd_hda_codec_hdmi serial_core ata_generic pata_acpi drm kvm snd_hda_codec_via parport processor button ghash_clmulni_intel snd_hda_intel sg xhci_hcd pata_atiixp snd_hda_codec i2c_algo_bit r8169 cfbcopyarea ehci_hcd evdev i2c_piix4 cfbimgblt cfbfillrect pcspkr snd_hwdep psmouse shpchp snd_pcm usbcore serio_raw cryptd pci_hotplug usb_common snd_timer snd mii soundcore microcode snd_page_alloc unix Nov 26 11:31:05 afdesk02 kernel: [15780.134068] CPU 0 Nov 26 11:31:05 afdesk02 kernel: [15780.134104] Pid: 3779, comm: flush-9:1 Tainted: G D 3.6.4-reiser4 #1 System manufacturer System Product Name/M5A78L-M/USB3 Nov 26 11:31:05 afdesk02 kernel: [15780.134280] RIP: 0010:[] [] _raw_spin_lock+0x18/0x40 Nov 26 11:31:05 afdesk02 kernel: [15780.134406] RSP: 0018:ffff8801010d9af0 EFLAGS: 00010202 Nov 26 11:31:05 afdesk02 kernel: [15780.134485] RAX: 0000000000000100 RBX: ffffea0004169b40 RCX: 0000000000000000 Nov 26 11:31:05 afdesk02 kernel: [15780.134587] RDX: ffffea0004169b40 RSI: ffff8801010d9aa0 RDI: 0000000000000052 Nov 26 11:31:05 afdesk02 kernel: [15780.134688] RBP: ffff8801010d9af0 R08: 0000000000003280 R09: 0000000000000000 Nov 26 11:31:05 afdesk02 kernel: [15780.134789] R10: 0000000000000000 R11: 0000000000000006 R12: 0000000000000002 Nov 26 11:31:05 afdesk02 kernel: [15780.134889] R13: 0000000000000052 R14: ffff88010b762900 R15: ffff8801097cda20 Nov 26 11:31:05 afdesk02 kernel: [15780.134991] FS: 00007f27d0fec880(0000) GS:ffff88011ec00000(0000) knlGS:0000000000000000 Nov 26 11:31:05 afdesk02 kernel: [15780.135106] CS: 0010 DS: 0000 ES: 0000 CR0: 000000008005003b Nov 26 11:31:05 afdesk02 kernel: [15780.135198] CR2: 0000000000000052 CR3: 0000000113fc9000 CR4: 00000000000407f0 Nov 26 11:31:05 afdesk02 kernel: [15780.135300] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 Nov 26 11:31:05 afdesk02 kernel: [15780.135401] DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000400 Nov 26 11:31:05 afdesk02 kernel: [15780.135502] Process flush-9:1 (pid: 3779, threadinfo ffff8801010d8000, task ffff880119fa2520) Nov 26 11:31:05 afdesk02 kernel: [15780.135621] Stack: Nov 26 11:31:05 afdesk02 kernel: [15780.135654] ffff8801010d9ba0 ffffffff81197305 0000000000000001 ffff880100000000 Nov 26 11:31:05 afdesk02 kernel: [15780.135784] ffff8801010d9d10 0000000000001d70 ffff8801097cd8c8 ffff8801097cd7c0 Nov 26 11:31:05 afdesk02 kernel: [15780.135915] ffff880119fa2520 0000000000005079 ffff8801097cda10 ffff8801097cd838 Nov 26 11:31:05 afdesk02 kernel: [15780.136044] Call Trace: Nov 26 11:31:05 afdesk02 kernel: [15780.136088] [] writepages_unix_file+0x305/0x4e0 Nov 26 11:31:05 afdesk02 kernel: [15780.136183] [] reiser4_writepages+0x25/0x30 Nov 26 11:31:05 afdesk02 kernel: [15780.136271] [] do_writepages+0x1b/0x30 Nov 26 11:31:05 afdesk02 kernel: [15780.136353] [] __writeback_single_inode.clone.26+0x3e/0x130 Nov 26 11:31:05 afdesk02 kernel: [15780.136460] [] generic_writeback_sb_inodes+0x1d5/0x340 Nov 26 11:31:05 afdesk02 kernel: [15780.136559] [] reiser4_writeback_inodes+0x8d/0x140 Nov 26 11:31:05 afdesk02 kernel: [15780.136653] [] writeback_sb_inodes+0x8d/0xb0 Nov 26 11:31:05 afdesk02 kernel: [15780.136739] [] wb_writeback+0xd0/0x1e0 Nov 26 11:31:05 afdesk02 kernel: [15780.136819] [] wb_do_writeback+0x9c/0x1c0 Nov 26 11:31:05 afdesk02 kernel: [15780.136906] [] ? lock_timer_base.clone.30+0x36/0x70 Nov 26 11:31:05 afdesk02 kernel: [15780.137002] [] bdi_writeback_thread+0x8a/0x160 Nov 26 11:31:05 afdesk02 kernel: [15780.137091] [] ? wb_do_writeback+0x1c0/0x1c0 Nov 26 11:31:05 afdesk02 kernel: [15780.137177] [] ? wb_do_writeback+0x1c0/0x1c0 Nov 26 11:31:05 afdesk02 kernel: [15780.137265] [] kthread+0x96/0xa0 Nov 26 11:31:05 afdesk02 kernel: [15780.137338] [] kernel_thread_helper+0x4/0x10 Nov 26 11:31:05 afdesk02 kernel: [15780.137426] [] ? kthread_freezable_should_stop+0x60/0x60 Nov 26 11:31:05 afdesk02 kernel: [15780.137528] [] ? gs_change+0xb/0xb Nov 26 11:31:05 afdesk02 kernel: [15780.137601] Code: 48 89 e5 e8 7b fe ff ff c9 c3 90 90 90 90 90 90 90 90 90 55 65 48 8b 04 25 08 b8 00 00 48 89 e5 ff 80 44 e0 ff ff b8 00 01 00 00 66 0f c1 07 0f b6 d4 38 c2 74 0d 0f 1f 40 00 f3 90 0f b6 07 Nov 26 11:31:05 afdesk02 kernel: [15780.138344] RIP [] _raw_spin_lock+0x18/0x40 Nov 26 11:31:05 afdesk02 kernel: [15780.138441] RSP Nov 26 11:31:05 afdesk02 kernel: [15780.138495] CR2: 0000000000000052 Nov 26 11:31:05 afdesk02 kernel: [15780.138546] ---[ end trace 792199483cf446de ]--- Nov 26 11:31:05 afdesk02 kernel: [15780.138616] note: flush-9:1[3779] exited with preempt_count 1 Cheers and good luck. Arend