* GPF in read_extent_buffer while scrubbing on 3.7.0-rc8-00014-g27d7c2a
@ 2012-12-06 14:34 Mathieu Chouquet-Stringer
2012-12-10 22:21 ` Mathieu Chouquet-Stringer
0 siblings, 1 reply; 4+ messages in thread
From: Mathieu Chouquet-Stringer @ 2012-12-06 14:34 UTC (permalink / raw)
To: linux-btrfs; +Cc: sami.liedes, chris.mason, sensille
Hello,
Using the last couple of kernels (3.6 or 3.7), scrubbing my btrfs fs (which is
on a luks based lvm device) will always end up crashing my pc.
The error (screenshot: http://mathieu.csetco.com/btrfs-scrub-crash.jpeg) looks
very similar to this crash (that's why I'm Cc'ing Sami):
btrfs GPF in read_extent_buffer() while scrubbing with kernel 3.4.2
http://marc.info/?t=134127076600002&r=1&w=2
(I transcribed this from the picture)
Pid: 518, comm: btrfs-endio-met Tainted: G W 3.7.0-rc8-00014-g27d7c2a
RIP: 0010:[<fffffffff8136c186>] [<ffffffff8136c186>] memcpy+0x6/0x110
[...]
Call Trace:
[<ffffffff812aa8a3>] ? read_extent_buffer+0xc3/0x120
[<ffffffff812a15e2>] btrfs_node_key+0x22/0x30
[<ffffffff812dd150>] __readahead_hook.isra.5+0x3a0/0x3f0
[<ffffffff812dd544>] btree_readahead_hook+0x24/0x40
[<ffffffff81285a99>] btree_readpage_end_io_hook+0x139/0x290
[...]
Looking at the email thread, I can't seem to be able to find a happy
ending. It looks like this could still be open.
Here's my btrfs device:
Label: none uuid: 02c68790-78a5-418a-901c-59eda67b0e6e
Total devices 1 FS bytes used 197.60GB
devid 1 size 460.41GB used 289.07GB path /dev/dm-2
The output of fi df /:
Data: total=269.00GB, used=195.88GB
System, DUP: total=32.00MB, used=32.00KB
System: total=4.00MB, used=0.00
Metadata, DUP: total=10.00GB, used=1.71GB
Anything I could do to help diagnose the issue? I've seen Chris
suggested to enable slub (I use slub, not slab) and pagealloc debug.
What else?
--
Mathieu Chouquet-Stringer mathieu@csetco.com
The sun itself sees not till heaven clears.
-- William Shakespeare --
^ permalink raw reply [flat|nested] 4+ messages in thread
* Re: GPF in read_extent_buffer while scrubbing on 3.7.0-rc8-00014-g27d7c2a
2012-12-06 14:34 GPF in read_extent_buffer while scrubbing on 3.7.0-rc8-00014-g27d7c2a Mathieu Chouquet-Stringer
@ 2012-12-10 22:21 ` Mathieu Chouquet-Stringer
2012-12-14 18:11 ` Mathieu Chouquet-Stringer
0 siblings, 1 reply; 4+ messages in thread
From: Mathieu Chouquet-Stringer @ 2012-12-10 22:21 UTC (permalink / raw)
To: linux-btrfs, linux-kernel; +Cc: sami.liedes, chris.mason, sensille
Hi again,
after enabling page alloc and slub debug, I was able to capture an error
followed by the "usual" GPF. More below.
On Thu, Dec 06, 2012 at 03:34:58PM +0100, Mathieu Chouquet-Stringer wrote:
> Using the last couple of kernels (3.6 or 3.7), scrubbing my btrfs fs (which is
> on a luks based lvm device) will always end up crashing my pc.
> [...]
The warning:
WARNING: at fs/btrfs/extent_io.c:4680 read_extent_buffer+0xee/0x120()
Hardware name: 2392CTO
Modules linked in: nf_conntrack_netbios_ns nf_conntrack_broadcast ipt_MASQUERADE ip6table_mangle ip6t_REJECT lockd sunrpc nf_conntrack_ipv6 nf_defrag_ipv6 ip6table_filter ip6_tables iptable_nat nf_nat_ipv4 nf_nat iptable_mangle nf_conntrack_ipv4 nf_defrag_ipv4 xt_conntrack nf_conntrack rfcomm bnep arc4 iwldvm mac80211 iTCO_wdt iTCO_vendor_support snd_hda_codec_realtek coretemp kvm_intel kvm microcode uvcvideo videobuf2_vmalloc videobuf2_memops pcspkr videobuf2_core videodev btusb media i2c_i801 bluetooth snd_hda_intel snd_hda_codec cdc_ncm usbnet mii cdc_wdm cdc_acm snd_hwdep snd_seq snd_seq_device snd_pcm lpc_ich mfd_core iwlwifi cfg80211 e1000e snd_page_alloc mei snd_timer thinkpad_acpi snd soundcore rfkill uinput dm_crypt crc32c_intel nouveau ghash_clmulni_intel mxm_wmi ttm i915 i2c_algo_bit drm_kms_helper firewire_ohci drm sdhci_pci firewire_core sdhci mmc_core crc_itu_t i2c_core wmi video
Pid: 536, comm: btrfs-endio-met Not tainted 3.7.0-rc8-00039-ged23ec4 #4
Call Trace:
[<ffffffff8104bebf>] warn_slowpath_common+0x7f/0xc0
[<ffffffff8104bf1a>] warn_slowpath_null+0x1a/0x20
[<ffffffff812aae9e>] read_extent_buffer+0xee/0x120
[<ffffffff812a1bb2>] btrfs_node_key+0x22/0x30
[<ffffffff812dd720>] __readahead_hook.isra.5+0x3a0/0x3f0
[<ffffffff812ddb14>] btree_readahead_hook+0x24/0x40
[<ffffffff81286069>] btree_readpage_end_io_hook+0x139/0x290
[<ffffffff812a6ff3>] end_bio_extent_readpage+0xd3/0xa40
[<ffffffff812853a6>] ? end_workqueue_fn+0x36/0x50
[<ffffffff811b27ed>] bio_endio+0x1d/0x30
[<ffffffff812853b1>] end_workqueue_fn+0x41/0x50
[<ffffffff812b5916>] worker_loop+0x136/0x580
[<ffffffff812b57e0>] ? btrfs_queue_worker+0x300/0x300
[<ffffffff8106f480>] kthread+0xc0/0xd0
[<ffffffff8106f3c0>] ? kthread_create_on_node+0x120/0x120
[<ffffffff8168e8ec>] ret_from_fork+0x7c/0xb0
[<ffffffff8106f3c0>] ? kthread_create_on_node+0x120/0x120
gdb says it's this WARN ON:
(gdb) l *(read_extent_buffer + 0xee)
0x726e is in read_extent_buffer (fs/btrfs/extent_io.c:4680).
4675 char *kaddr;
4676 char *dst = (char *)dstv;
4677 size_t start_offset = eb->start & ((u64)PAGE_CACHE_SIZE - 1);
4678 unsigned long i = (start_offset + start) >> PAGE_CACHE_SHIFT;
4679
4680 WARN_ON(start > eb->len);
4681 WARN_ON(start + len > eb->start + eb->len);
4682
4683 offset = (start_offset + start) & ((unsigned long)PAGE_CACHE_SIZE - 1);
4684
The GPF which follows right after is:
general protection fault: 0000 [#1] SMP DEBUG_PAGEALLOC
Modules linked in: nf_conntrack_netbios_ns nf_conntrack_broadcast ipt_MASQUERADE ip6table_mangle ip6t_REJECT lockd sunrpc nf_conntrack_ipv6 nf_defrag_ipv6 ip6table_filter ip6_tables iptable_nat nf_nat_ipv4 nf_nat iptable_mangle nf_conntrack_ipv4 nf_defrag_ipv4 xt_conntrack nf_conntrack rfcomm bnep arc4 iwldvm mac80211 iTCO_wdt iTCO_vendor_support snd_hda_codec_realtek coretemp kvm_intel kvm microcode uvcvideo videobuf2_vmalloc videobuf2_memops pcspkr videobuf2_core videodev btusb media i2c_i801 bluetooth snd_hda_intel snd_hda_codec cdc_ncm usbnet mii cdc_wdm cdc_acm snd_hwdep snd_seq snd_seq_device snd_pcm lpc_ich mfd_core iwlwifi cfg80211 e1000e snd_page_alloc mei snd_timer thinkpad_acpi snd soundcore rfkill uinput dm_crypt crc32c_intel nouveau ghash_clmulni_intel mxm_wmi ttm i915 i2c_algo_bit drm_kms_helper firewire_ohci drm sdhci_pci firewire_core sdhci mmc_core crc_itu_t i2c_core wmi video
CPU 1
Pid: 536, comm: btrfs-endio-met Tainted: G W 3.7.0-rc8-00039-ged23ec4 #4 LENOVO 2392CTO/2392CTO
RIP: 0010:[<ffffffff8136c756>] [<ffffffff8136c756>] memcpy+0x6/0x110
RSP: 0018:ffff8804215a9b70 EFLAGS: 00010207
RAX: ffff8804215a9c57 RBX: 0000000000000011 RCX: 0000000000000011
RDX: 0000000000000011 RSI: 0005080000000003 RDI: ffff8804215a9c57
RBP: ffff8804215a9bb8 R08: 0000000000000000 R09: 0000000000000486
R10: 0000000000000001 R11: 0000000000aaaaaa R12: ffff8804215a9c68
R13: ffff8803f4c5cfc0 R14: 0000000000000048 R15: 0000000000000011
FS: 0000000000000000(0000) GS:ffff88043e240000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fe992197000 CR3: 0000000001c0b000 CR4: 00000000001407e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000400
Process btrfs-endio-met (pid: 536, threadinfo ffff8804215a8000, task ffff8804224eb0e0)
Stack:
ffffffff812aae73 ffff8804105ea000 0000000000008003 0000000000001000
ffff8804215a9c20 00000000000003dd ffff88041232a7c0 ffff8804215a9c20
aeb3f3fe4e814d8e ffff8804215a9bc8 ffffffff812a1bb2 ffff8804215a9c98
Call Trace:
[<ffffffff812aae73>] ? read_extent_buffer+0xc3/0x120
[<ffffffff812a1bb2>] btrfs_node_key+0x22/0x30
[<ffffffff812dd720>] __readahead_hook.isra.5+0x3a0/0x3f0
[<ffffffff812ddb14>] btree_readahead_hook+0x24/0x40
[<ffffffff81286069>] btree_readpage_end_io_hook+0x139/0x290
[<ffffffff812a6ff3>] end_bio_extent_readpage+0xd3/0xa40
[<ffffffff812853a6>] ? end_workqueue_fn+0x36/0x50
[<ffffffff811b27ed>] bio_endio+0x1d/0x30
[<ffffffff812853b1>] end_workqueue_fn+0x41/0x50
[<ffffffff812b5916>] worker_loop+0x136/0x580
[<ffffffff812b57e0>] ? btrfs_queue_worker+0x300/0x300
[<ffffffff8106f480>] kthread+0xc0/0xd0
[<ffffffff8106f3c0>] ? kthread_create_on_node+0x120/0x120
[<ffffffff8168e8ec>] ret_from_fork+0x7c/0xb0
[<ffffffff8106f3c0>] ? kthread_create_on_node+0x120/0x120
Code: 74 13 48 8b 43 58 48 2b 43 50 88 43 4e 48 83 c4 08 5b 5d c3 90 e8 eb fb ff ff eb e6 90 90 90 90 90 90 90 90 90 48 89 f8 48 89 d1 <f3> a4 c3 03 83 e2 07 f3 48 a5 89 d1 f3 a4 c3 20 4c 8b 06 4c 8b
RIP [<ffffffff8136c756>] memcpy+0x6/0x110
RSP <ffff8804215a9b70>
memcpy is called from here:
(gdb) l *(read_extent_buffer + 0xc3)
0x7243 is in read_extent_buffer (fs/btrfs/extent_io.c:4694).
4689 kaddr = page_address(page);
4690 memcpy(dst, kaddr + offset, cur);
4691
4692 dst += cur;
4693 len -= cur;
4694 offset = 0;
4695 i++;
4696 }
4697 }
4698
Any idea what to do next? If you think I should be adding debug printk
statements, feel free to send them my way.
--
Mathieu Chouquet-Stringer mathieu@csetco.com
The sun itself sees not till heaven clears.
-- William Shakespeare --
^ permalink raw reply [flat|nested] 4+ messages in thread
* Re: GPF in read_extent_buffer while scrubbing on 3.7.0-rc8-00014-g27d7c2a
2012-12-10 22:21 ` Mathieu Chouquet-Stringer
@ 2012-12-14 18:11 ` Mathieu Chouquet-Stringer
2013-01-03 17:26 ` Jan Schmidt
0 siblings, 1 reply; 4+ messages in thread
From: Mathieu Chouquet-Stringer @ 2012-12-14 18:11 UTC (permalink / raw)
To: linux-btrfs, linux-kernel, sami.liedes, chris.mason, sensille,
list.btrfs
Hi,
Anyone has any idea about what I should try next regarding this bug?
On Mon, Dec 10, 2012 at 11:21:25PM +0100, Mathieu Chouquet-Stringer wrote:
> after enabling page alloc and slub debug, I was able to capture an error
> followed by the "usual" GPF. More below.
>
> On Thu, Dec 06, 2012 at 03:34:58PM +0100, Mathieu Chouquet-Stringer wrote:
> > Using the last couple of kernels (3.6 or 3.7), scrubbing my btrfs fs (which is
> > on a luks based lvm device) will always end up crashing my pc.
> > [...]
>
> The warning:
> WARNING: at fs/btrfs/extent_io.c:4680 read_extent_buffer+0xee/0x120()
> Hardware name: 2392CTO
> Modules linked in: nf_conntrack_netbios_ns nf_conntrack_broadcast ipt_MASQUERADE ip6table_mangle ip6t_REJECT lockd sunrpc nf_conntrack_ipv6 nf_defrag_ipv6 ip6table_filter ip6_tables iptable_nat nf_nat_ipv4 nf_nat iptable_mangle nf_conntrack_ipv4 nf_defrag_ipv4 xt_conntrack nf_conntrack rfcomm bnep arc4 iwldvm mac80211 iTCO_wdt iTCO_vendor_support snd_hda_codec_realtek coretemp kvm_intel kvm microcode uvcvideo videobuf2_vmalloc videobuf2_memops pcspkr videobuf2_core videodev btusb media i2c_i801 bluetooth snd_hda_intel snd_hda_codec cdc_ncm usbnet mii cdc_wdm cdc_acm snd_hwdep snd_seq snd_seq_device snd_pcm lpc_ich mfd_core iwlwifi cfg80211 e1000e snd_page_alloc mei snd_timer thinkpad_acpi snd soundcore rfkill uinput dm_crypt crc32c_intel nouveau ghash_clmulni_intel mxm_wmi ttm i915 i2c_algo_bit drm_kms_helper firewire_ohci drm sdhci_pci firewire_core sdhci mmc_core crc_itu_t i2c_core wmi video
> Pid: 536, comm: btrfs-endio-met Not tainted 3.7.0-rc8-00039-ged23ec4 #4
> Call Trace:
> [<ffffffff8104bebf>] warn_slowpath_common+0x7f/0xc0
> [<ffffffff8104bf1a>] warn_slowpath_null+0x1a/0x20
> [<ffffffff812aae9e>] read_extent_buffer+0xee/0x120
> [<ffffffff812a1bb2>] btrfs_node_key+0x22/0x30
> [<ffffffff812dd720>] __readahead_hook.isra.5+0x3a0/0x3f0
> [<ffffffff812ddb14>] btree_readahead_hook+0x24/0x40
> [<ffffffff81286069>] btree_readpage_end_io_hook+0x139/0x290
> [<ffffffff812a6ff3>] end_bio_extent_readpage+0xd3/0xa40
> [<ffffffff812853a6>] ? end_workqueue_fn+0x36/0x50
> [<ffffffff811b27ed>] bio_endio+0x1d/0x30
> [<ffffffff812853b1>] end_workqueue_fn+0x41/0x50
> [<ffffffff812b5916>] worker_loop+0x136/0x580
> [<ffffffff812b57e0>] ? btrfs_queue_worker+0x300/0x300
> [<ffffffff8106f480>] kthread+0xc0/0xd0
> [<ffffffff8106f3c0>] ? kthread_create_on_node+0x120/0x120
> [<ffffffff8168e8ec>] ret_from_fork+0x7c/0xb0
> [<ffffffff8106f3c0>] ? kthread_create_on_node+0x120/0x120
>
> gdb says it's this WARN ON:
> (gdb) l *(read_extent_buffer + 0xee)
> 0x726e is in read_extent_buffer (fs/btrfs/extent_io.c:4680).
> 4675 char *kaddr;
> 4676 char *dst = (char *)dstv;
> 4677 size_t start_offset = eb->start & ((u64)PAGE_CACHE_SIZE - 1);
> 4678 unsigned long i = (start_offset + start) >> PAGE_CACHE_SHIFT;
> 4679
>
> 4680 WARN_ON(start > eb->len);
>
> 4681 WARN_ON(start + len > eb->start + eb->len);
> 4682
> 4683 offset = (start_offset + start) & ((unsigned long)PAGE_CACHE_SIZE - 1);
> 4684
>
> The GPF which follows right after is:
> general protection fault: 0000 [#1] SMP DEBUG_PAGEALLOC
> Modules linked in: nf_conntrack_netbios_ns nf_conntrack_broadcast ipt_MASQUERADE ip6table_mangle ip6t_REJECT lockd sunrpc nf_conntrack_ipv6 nf_defrag_ipv6 ip6table_filter ip6_tables iptable_nat nf_nat_ipv4 nf_nat iptable_mangle nf_conntrack_ipv4 nf_defrag_ipv4 xt_conntrack nf_conntrack rfcomm bnep arc4 iwldvm mac80211 iTCO_wdt iTCO_vendor_support snd_hda_codec_realtek coretemp kvm_intel kvm microcode uvcvideo videobuf2_vmalloc videobuf2_memops pcspkr videobuf2_core videodev btusb media i2c_i801 bluetooth snd_hda_intel snd_hda_codec cdc_ncm usbnet mii cdc_wdm cdc_acm snd_hwdep snd_seq snd_seq_device snd_pcm lpc_ich mfd_core iwlwifi cfg80211 e1000e snd_page_alloc mei snd_timer thinkpad_acpi snd soundcore rfkill uinput dm_crypt crc32c_intel nouveau ghash_clmulni_intel mxm_wmi ttm i915 i2c_algo_bit drm_kms_helper firewire_ohci drm sdhci_pci firewire_core sdhci mmc_core crc_itu_t i2c_core wmi video
> CPU 1
> Pid: 536, comm: btrfs-endio-met Tainted: G W 3.7.0-rc8-00039-ged23ec4 #4 LENOVO 2392CTO/2392CTO
> RIP: 0010:[<ffffffff8136c756>] [<ffffffff8136c756>] memcpy+0x6/0x110
> RSP: 0018:ffff8804215a9b70 EFLAGS: 00010207
> RAX: ffff8804215a9c57 RBX: 0000000000000011 RCX: 0000000000000011
> RDX: 0000000000000011 RSI: 0005080000000003 RDI: ffff8804215a9c57
> RBP: ffff8804215a9bb8 R08: 0000000000000000 R09: 0000000000000486
> R10: 0000000000000001 R11: 0000000000aaaaaa R12: ffff8804215a9c68
> R13: ffff8803f4c5cfc0 R14: 0000000000000048 R15: 0000000000000011
> FS: 0000000000000000(0000) GS:ffff88043e240000(0000) knlGS:0000000000000000
> CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
> CR2: 00007fe992197000 CR3: 0000000001c0b000 CR4: 00000000001407e0
> DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
> DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000400
> Process btrfs-endio-met (pid: 536, threadinfo ffff8804215a8000, task ffff8804224eb0e0)
> Stack:
> ffffffff812aae73 ffff8804105ea000 0000000000008003 0000000000001000
> ffff8804215a9c20 00000000000003dd ffff88041232a7c0 ffff8804215a9c20
> aeb3f3fe4e814d8e ffff8804215a9bc8 ffffffff812a1bb2 ffff8804215a9c98
> Call Trace:
> [<ffffffff812aae73>] ? read_extent_buffer+0xc3/0x120
> [<ffffffff812a1bb2>] btrfs_node_key+0x22/0x30
> [<ffffffff812dd720>] __readahead_hook.isra.5+0x3a0/0x3f0
> [<ffffffff812ddb14>] btree_readahead_hook+0x24/0x40
> [<ffffffff81286069>] btree_readpage_end_io_hook+0x139/0x290
> [<ffffffff812a6ff3>] end_bio_extent_readpage+0xd3/0xa40
> [<ffffffff812853a6>] ? end_workqueue_fn+0x36/0x50
> [<ffffffff811b27ed>] bio_endio+0x1d/0x30
> [<ffffffff812853b1>] end_workqueue_fn+0x41/0x50
> [<ffffffff812b5916>] worker_loop+0x136/0x580
> [<ffffffff812b57e0>] ? btrfs_queue_worker+0x300/0x300
> [<ffffffff8106f480>] kthread+0xc0/0xd0
> [<ffffffff8106f3c0>] ? kthread_create_on_node+0x120/0x120
> [<ffffffff8168e8ec>] ret_from_fork+0x7c/0xb0
> [<ffffffff8106f3c0>] ? kthread_create_on_node+0x120/0x120
> Code: 74 13 48 8b 43 58 48 2b 43 50 88 43 4e 48 83 c4 08 5b 5d c3 90 e8 eb fb ff ff eb e6 90 90 90 90 90 90 90 90 90 48 89 f8 48 89 d1 <f3> a4 c3 03 83 e2 07 f3 48 a5 89 d1 f3 a4 c3 20 4c 8b 06 4c 8b
> RIP [<ffffffff8136c756>] memcpy+0x6/0x110
> RSP <ffff8804215a9b70>
>
> memcpy is called from here:
> (gdb) l *(read_extent_buffer + 0xc3)
> 0x7243 is in read_extent_buffer (fs/btrfs/extent_io.c:4694).
> 4689 kaddr = page_address(page);
> 4690 memcpy(dst, kaddr + offset, cur);
> 4691
> 4692 dst += cur;
> 4693 len -= cur;
> 4694 offset = 0;
> 4695 i++;
> 4696 }
> 4697 }
> 4698
>
> Any idea what to do next? If you think I should be adding debug printk
> statements, feel free to send them my way.
--
Mathieu Chouquet-Stringer mathieu@csetco.com
The sun itself sees not till heaven clears.
-- William Shakespeare --
^ permalink raw reply [flat|nested] 4+ messages in thread
* Re: GPF in read_extent_buffer while scrubbing on 3.7.0-rc8-00014-g27d7c2a
2012-12-14 18:11 ` Mathieu Chouquet-Stringer
@ 2013-01-03 17:26 ` Jan Schmidt
0 siblings, 0 replies; 4+ messages in thread
From: Jan Schmidt @ 2013-01-03 17:26 UTC (permalink / raw)
To: Mathieu Chouquet-Stringer
Cc: linux-btrfs, linux-kernel, sami.liedes, chris.mason, sensille
Hi Mathieu,
Sorry for the late reply. I had quite a good reproducer once for what I suspect
may be your problem here - but it suddenly stopped reproducing the problem and I
still haven't figured out why. (see https://patchwork.kernel.org/patch/1773611/
if you're interested)
Can you please give the following patch a try and report back if it helps you
(apply on top of cmason/for-linus, 57ba86c)? If it doesn't, you've got three
choices:
a) forget about the problem
b) send me a dump of your whole file system (space can be provided)
c) receive debug patches, apply them and send me the output
Thanks,
-Jan
------>8---------
diff --git a/fs/btrfs/disk-io.c b/fs/btrfs/disk-io.c
index 65f0367..d51185e 100644
--- a/fs/btrfs/disk-io.c
+++ b/fs/btrfs/disk-io.c
@@ -3324,8 +3324,6 @@ int close_ctree(struct btrfs_root *root)
btrfs_dev_replace_suspend_for_unmount(fs_info);
- btrfs_scrub_cancel(fs_info);
-
/* wait for any defraggers to finish */
wait_event(fs_info->transaction_wait,
(atomic_read(&fs_info->defrag_running) == 0));
@@ -3392,6 +3390,7 @@ int close_ctree(struct btrfs_root *root)
btrfs_stop_workers(&fs_info->caching_workers);
btrfs_stop_workers(&fs_info->readahead_workers);
btrfs_stop_workers(&fs_info->flush_workers);
+ btrfs_scrub_cancel(fs_info);
#ifdef CONFIG_BTRFS_FS_CHECK_INTEGRITY
if (btrfs_test_opt(root, CHECK_INTEGRITY))
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2012-12-06 14:34 GPF in read_extent_buffer while scrubbing on 3.7.0-rc8-00014-g27d7c2a Mathieu Chouquet-Stringer
2012-12-10 22:21 ` Mathieu Chouquet-Stringer
2012-12-14 18:11 ` Mathieu Chouquet-Stringer
2013-01-03 17:26 ` Jan Schmidt
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