Oops in arc_space_return after resume from hibernate-ram

[simonbuehler]

hi,

got this after wakeup, how can this be debugged?

Jan 14 10:08:25 filepile kernel: [  140.563898] BUG: unable to handle kernel NULL pointer dereference at           (null)
Jan 14 10:08:25 filepile kernel: [  140.565704] IP: [<ffffffffa00ef290>] arc_space_return+0x1077/0x2143 [zfs]
Jan 14 10:08:25 filepile kernel: [  140.567240] PGD 0 
Jan 14 10:08:25 filepile kernel: [  140.568732] Oops: 0000 [#1] SMP 
Jan 14 10:08:25 filepile kernel: [  140.570266] Modules linked in: ipv6 joydev sr_mod cdrom snd_hda_codec_hdmi snd_hda_codec_realtek arc4 rt2800pci rt2800lib crc_ccitt rt2x00pci rt2x00lib i915 mac80211 drm_kms_helper drm coretemp cfg80211 kvm_intel rfkill kvm xhci_hcd snd_hda_intel snd_hda_codec r8168(O) i2c_algo_bit acpi_cpufreq mperf video i2c_i801 ghash_clmulni_intel eeprom_93cx6 usb_storage processor button microcode thermal_sys snd_hwdep snd_pcm snd_timer snd snd_page_alloc zfs(PO) zavl(PO) zunicode(PO) zcommon(PO) znvpair(PO) spl(O) zlib_deflate usbhid uhci_hcd ehci_hcd usbcore usb_common dm_crypt dm_mod
Jan 14 10:08:25 filepile kernel: [  140.576014] CPU 1 
Jan 14 10:08:25 filepile kernel: [  140.576035] Pid: 905, comm: z_wr_int/1 Tainted: P           O 3.6.11-gentoo #4 MotherBoard By ZOTAC MotherBoard H67ITX-D-E/H67ITX-D-E
Jan 14 10:08:25 filepile kernel: [  140.579601] RIP: 0010:[<ffffffffa00ef290>]  [<ffffffffa00ef290>] arc_space_return+0x1077/0x2143 [zfs]
Jan 14 10:08:25 filepile kernel: [  140.581492] RSP: 0018:ffff880231261c30  EFLAGS: 00010246
Jan 14 10:08:25 filepile kernel: [  140.583196] RAX: ffffffffa00ef270 RBX: ffff88023135aea8 RCX: 0000000000000000
Jan 14 10:08:25 filepile kernel: [  140.585092] RDX: 0000000000000000 RSI: 0000000000020000 RDI: ffff88023135aea8
Jan 14 10:08:25 filepile kernel: [  140.586803] RBP: 0000000000000000 R08: 0000000000000018 R09: 00000000000003e1
Jan 14 10:08:25 filepile kernel: [  140.588488] R10: 000000000097c3c5 R11: 0000000000000246 R12: ffff880223999960
Jan 14 10:08:25 filepile kernel: [  140.590156] R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000
Jan 14 10:08:25 filepile kernel: [  140.591838] FS:  0000000000000000(0000) GS:ffff88023fa80000(0000) knlGS:0000000000000000
Jan 14 10:08:25 filepile kernel: [  140.593549] CS:  0010 DS: 0000 ES: 0000 CR0: 000000008005003b
Jan 14 10:08:25 filepile kernel: [  140.595249] CR2: 0000000000000000 CR3: 000000000160b000 CR4: 00000000000407e0
Jan 14 10:08:25 filepile kernel: [  140.596953] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
Jan 14 10:08:25 filepile kernel: [  140.598666] DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000400
Jan 14 10:08:25 filepile kernel: [  140.600379] Process z_wr_int/1 (pid: 905, threadinfo ffff880231260000, task ffff88023e988f00)
Jan 14 10:08:25 filepile kernel: [  140.602127] Stack:
Jan 14 10:08:25 filepile kernel: [  140.603869]  0000000200000000 ffff88023fa8d650 ffff88023135aea8 ffff88023135aea8
Jan 14 10:08:25 filepile kernel: [  140.605694]  ffff88023135aea8 ffff88023135aea8 0000000000000000 0000000000000000
Jan 14 10:08:25 filepile kernel: [  140.607545]  0000000000100000 ffffffffa016e350 ffff88023135aea8 00000010a0169ec7
Jan 14 10:08:25 filepile kernel: [  140.609420] Call Trace:
Jan 14 10:08:25 filepile kernel: [  140.611309]  [<ffffffffa016e350>] ? zio_worst_error+0x7ec/0xd34 [zfs]
Jan 14 10:08:25 filepile kernel: [  140.613236]  [<ffffffffa016e515>] ? zio_worst_error+0x9b1/0xd34 [zfs]
Jan 14 10:08:25 filepile kernel: [  140.615170]  [<ffffffffa0169ec7>] ? zil_vdev_offline+0x14f/0x349 [zfs]
Jan 14 10:08:25 filepile kernel: [  140.617118]  [<ffffffffa016e515>] ? zio_worst_error+0x9b1/0xd34 [zfs]
Jan 14 10:08:25 filepile kernel: [  140.619082]  [<ffffffffa016aa09>] ? zio_execute+0xf1/0x262 [zfs]
Jan 14 10:08:25 filepile kernel: [  140.621054]  [<ffffffff81050d0f>] ? __wake_up+0x35/0x46
Jan 14 10:08:25 filepile kernel: [  140.623044]  [<ffffffffa006dc52>] ? taskq_destroy+0x515/0x691 [spl]
Jan 14 10:08:25 filepile kernel: [  140.625059]  [<ffffffff810547bf>] ? try_to_wake_up+0x1fd/0x20f
Jan 14 10:08:25 filepile kernel: [  140.627080]  [<ffffffff810547d1>] ? try_to_wake_up+0x20f/0x20f
Jan 14 10:08:25 filepile kernel: [  140.629110]  [<ffffffffa006d99b>] ? taskq_destroy+0x25e/0x691 [spl]
Jan 14 10:08:25 filepile kernel: [  140.631155]  [<ffffffffa006d99b>] ? taskq_destroy+0x25e/0x691 [spl]
Jan 14 10:08:25 filepile kernel: [  140.633179]  [<ffffffff8104a5c7>] ? kthread+0x81/0x89
Jan 14 10:08:25 filepile kernel: [  140.635210]  [<ffffffff813d74b4>] ? kernel_thread_helper+0x4/0x10
Jan 14 10:08:25 filepile kernel: [  140.637252]  [<ffffffff8104a546>] ? kthread_freezable_should_stop+0x52/0x52
Jan 14 10:08:25 filepile kernel: [  140.639309]  [<ffffffff813d74b0>] ? gs_change+0xb/0xb
Jan 14 10:08:25 filepile kernel: [  140.641360] Code: 5b 5d 41 5c 41 5d 41 5e 41 5f c3 41 55 41 54 55 53 48 89 fb 48 83 ec 28 4c 8b a7 48 01 00 00 83 bf 78 02 00 00 00 4d 8b 6c 24 18 <49> 8b 6d 00 75 34 48 8b 47 50 48 8b 10 48 89 55 00 48 8b 40 08 
Jan 14 10:08:25 filepile kernel: [  140.646115] RIP  [<ffffffffa00ef290>] arc_space_return+0x1077/0x2143 [zfs]
Jan 14 10:08:25 filepile kernel: [  140.648450]  RSP <ffff880231261c30>
Jan 14 10:08:25 filepile kernel: [  140.650773] CR2: 0000000000000000
Jan 14 10:08:25 filepile kernel: [  140.653109] ---[ end trace 10f7feae09674bd5 ]---

[behlendorf]

This might be enough. Is it easily reproducible after resuming from hibernation?

[simonbuehler]

not really, i'll report back in case

[FransUrbo]

Related to #260?

[FransUrbo]

Is this still a problem, or could/should it be closed?

[behlendorf]

I suspect this is still a legitimate, although unlikely problem. Let's leave it open.

[behlendorf]

Closing as stale.