From: Tomasz Chmielewski <tch@virtall.com>
To: Shilong Wang <wangshilong1991@gmail.com>
Cc: "linux-btrfs@vger.kernel.org" <linux-btrfs@vger.kernel.org>
Subject: Re: WARNING at fs/btrfs/backref.c:936 find_parent_nodes+0x378/0x5d2
Date: Sun, 19 Jan 2014 22:46:54 +0100 [thread overview]
Message-ID: <20140119224654.4e600232@virtall.com> (raw)
In-Reply-To: <CAP9B-Qn1PChub2fbwL6Mv6mDt_h3jjYs8r+h28Z3=hOHzdwB=A@mail.gmail.com>
No balance was running. The usual rsync and btrfs snapshots; I'm unable
to say when exactly it happened (i.e. if it was during rsync or snapshot
adding/removal).
As of defragment - I didn't run it manually, but I have autodefrag
option enabled:
/dev/sdc1 on /mnt/lxc2 type btrfs
(rw,noatime,compress-force=zlib,space_cache,autodefrag)
--
Tomasz Chmielewski
On Sun, 19 Jan 2014 23:49:51 +0800
Shilong Wang <wangshilong1991@gmail.com> wrote:
> Hello Tomasz,
>
> This seems a new bug, did you run balance and defragment concurrently
> for triggering the following warning?
>
> Thanks,
> Wang
> 2014/1/19 Tomasz Chmielewski <tch@virtall.com>:
> > Just had a few of these with 3.13.0-rc8:
> >
> > [262162.560701] ------------[ cut here ]------------
> > [262162.560764] WARNING: CPU: 0 PID: 22705 at
> > fs/btrfs/backref.c:936 find_parent_nodes+0x378/0x5d2 [btrfs]()
> > [262162.560872] Modules linked in: ipt_MASQUERADE iptable_nat
> > nf_conntrack_ipv4 nf_defrag_ipv4 nf_nat_ipv4 nf_nat nf_conntrack
> > ip_tables x_tables cpufreq_ondemand cpufreq_conservative
> > cpufreq_powersave cpufreq_stats bridge stp llc ipv6 btrfs xor
> > raid6_pq zlib_deflate loop pcspkr ehci_pci ehci_hcd button lpc_ich
> > mfd_core i2c_i801 i2c_core video acpi_cpufreq ext4 crc16 jbd2
> > mbcache raid1 sg sd_mod ahci libahci libata r8169 mii scsi_mod
> > [262162.562685] CPU: 0 PID: 22705 Comm: btrfs-endio-wri Not tainted
> > 3.13.0-rc8 #2 [262162.562796] Hardware name: System manufacturer
> > System Product Name/P8H77-M PRO, BIOS 1101 02/04/2013
> > [262162.562911] 0000000000000009 ffff88009e911a78 ffffffff813898b7
> > 0000000000000006 [262162.563028] 0000000000000000 ffff88009e911ab8
> > ffffffff810370a9 0100000000000846 [262162.563143] ffffffffa02b7a6f
> > ffff8807e7248090 ffff8807f2d5e000 ffff88009e911b40 [262162.563259]
> > Call Trace: [262162.563319] [<ffffffff813898b7>]
> > dump_stack+0x46/0x58 [262162.563382] [<ffffffff810370a9>]
> > warn_slowpath_common+0x77/0x91 [262162.563458]
> > [<ffffffffa02b7a6f>] ? find_parent_nodes+0x378/0x5d2 [btrfs]
> > [262162.563522] [<ffffffff810370d8>] warn_slowpath_null+0x15/0x17
> > [262162.563595] [<ffffffffa02b7a6f>] find_parent_nodes+0x378/0x5d2
> > [btrfs] [262162.563671] [<ffffffffa02b84dc>]
> > iterate_extent_inodes+0xc9/0x1d6 [btrfs] [262162.563748]
> > [<ffffffffa0270981>] ? record_extent_backrefs+0xc3/0xc3 [btrfs]
> > [262162.563824] [<ffffffffa0270981>] ?
> > record_extent_backrefs+0xc3/0xc3 [btrfs] [262162.563899]
> > [<ffffffffa02b8668>] iterate_inodes_from_logical+0x7f/0x95 [btrfs]
> > [262162.564022] [<ffffffffa0270919>]
> > record_extent_backrefs+0x5b/0xc3 [btrfs] [262162.564098]
> > [<ffffffffa0278f67>] btrfs_finish_ordered_io+0x77a/0x877 [btrfs]
> > [262162.564221] [<ffffffffa0279074>] finish_ordered_fn+0x10/0x12
> > [btrfs] [262162.564296] [<ffffffffa02940d9>]
> > worker_loop+0x15e/0x495 [btrfs] [262162.564371]
> > [<ffffffffa0293f7b>] ? btrfs_queue_worker+0x269/0x269 [btrfs]
> > [262162.564437] [<ffffffff8104ee9a>] kthread+0xcd/0xd5
> > [262162.564499] [<ffffffff8104edcd>] ?
> > kthread_freezable_should_stop+0x43/0x43 [262162.564563]
> > [<ffffffff8138e6fc>] ret_from_fork+0x7c/0xb0 [262162.564626]
> > [<ffffffff8104edcd>] ? kthread_freezable_should_stop+0x43/0x43
> > [262162.564689] ---[ end trace 50ae39e01ebd7394 ]---
> > [262162.564753] ------------[ cut here ]------------
> > [262162.564825] WARNING: CPU: 0 PID: 22705 at
> > fs/btrfs/backref.c:936 find_parent_nodes+0x378/0x5d2 [btrfs]()
> > [262162.564939] Modules linked in: ipt_MASQUERADE iptable_nat
> > nf_conntrack_ipv4 nf_defrag_ipv4 nf_nat_ipv4 nf_nat nf_conntrack
> > ip_tables x_tables cpufreq_ondemand cpufreq_conservative
> > cpufreq_powersave cpufreq_stats bridge stp llc ipv6 btrfs xor
> > raid6_pq zlib_deflate loop pcspkr ehci_pci ehci_hcd button lpc_ich
> > mfd_core i2c_i801 i2c_core video acpi_cpufreq ext4 crc16 jbd2
> > mbcache raid1 sg sd_mod ahci libahci libata r8169 mii scsi_mod
> > [262162.565348] CPU: 0 PID: 22705 Comm: btrfs-endio-wri Tainted:
> > G W 3.13.0-rc8 #2 [262162.565461] Hardware name: System
> > manufacturer System Product Name/P8H77-M PRO, BIOS 1101 02/04/2013
> > [262162.565575] 0000000000000009 ffff88009e911a78 ffffffff813898b7
> > 0000000000000006 [262162.565689] 0000000000000000 ffff88009e911ab8
> > ffffffff810370a9 ffff8807f33be200 [262162.565804] ffffffffa02b7a6f
> > ffff8807e7248090 ffff8807f2d5e000 ffff88009e911b40 [262162.565920]
> > Call Trace: [262162.565975] [<ffffffff813898b7>]
> > dump_stack+0x46/0x58 [262162.566037] [<ffffffff810370a9>]
> > warn_slowpath_common+0x77/0x91 [262162.566109]
> > [<ffffffffa02b7a6f>] ? find_parent_nodes+0x378/0x5d2 [btrfs]
> > [262162.566174] [<ffffffff810370d8>] warn_slowpath_null+0x15/0x17
> > [262162.566247] [<ffffffffa02b7a6f>] find_parent_nodes+0x378/0x5d2
> > [btrfs] [262162.566321] [<ffffffffa02b84dc>]
> > iterate_extent_inodes+0xc9/0x1d6 [btrfs] [262162.566396]
> > [<ffffffffa0270981>] ? record_extent_backrefs+0xc3/0xc3 [btrfs]
> > [262162.566469] [<ffffffffa0270981>] ?
> > record_extent_backrefs+0xc3/0xc3 [btrfs] [262162.566544]
> > [<ffffffffa02b8668>] iterate_inodes_from_logical+0x7f/0x95 [btrfs]
> > [262162.566667] [<ffffffffa0270919>]
> > record_extent_backrefs+0x5b/0xc3 [btrfs] [262162.566742]
> > [<ffffffffa0278f67>] btrfs_finish_ordered_io+0x77a/0x877 [btrfs]
> > [262162.566866] [<ffffffffa0279074>] finish_ordered_fn+0x10/0x12
> > [btrfs] [262162.566941] [<ffffffffa02940d9>]
> > worker_loop+0x15e/0x495 [btrfs] [262162.567015]
> > [<ffffffffa0293f7b>] ? btrfs_queue_worker+0x269/0x269 [btrfs]
> > [262162.567080] [<ffffffff8104ee9a>] kthread+0xcd/0xd5
> > [262162.567141] [<ffffffff8104edcd>] ?
> > kthread_freezable_should_stop+0x43/0x43 [262162.567205]
> > [<ffffffff8138e6fc>] ret_from_fork+0x7c/0xb0 [262162.567267]
> > [<ffffffff8104edcd>] ? kthread_freezable_should_stop+0x43/0x43
> > [262162.567330] ---[ end trace 50ae39e01ebd7395 ]---
> >
> >
> > --
> > Tomasz Chmielewski
> > http://wpkg.org
> > --
> > To unsubscribe from this list: send the line "unsubscribe
> > linux-btrfs" in the body of a message to majordomo@vger.kernel.org
> > More majordomo info at http://vger.kernel.org/majordomo-info.html
next prev parent reply other threads:[~2014-01-19 21:47 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2014-01-19 13:09 WARNING at fs/btrfs/backref.c:936 find_parent_nodes+0x378/0x5d2 Tomasz Chmielewski
2014-01-19 15:49 ` Shilong Wang
2014-01-19 21:46 ` Tomasz Chmielewski [this message]
2014-01-20 8:41 ` Wang Shilong
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