From: Dave Jones <davej@codemonkey.org.uk>
To: Chris Mason <clm@fb.com>
Cc: Andy Lutomirski <luto@amacapital.net>,
Andy Lutomirski <luto@kernel.org>,
Linus Torvalds <torvalds@linux-foundation.org>,
Jens Axboe <axboe@fb.com>, Al Viro <viro@zeniv.linux.org.uk>,
Josef Bacik <jbacik@fb.com>, David Sterba <dsterba@suse.com>,
linux-btrfs <linux-btrfs@vger.kernel.org>,
Linux Kernel <linux-kernel@vger.kernel.org>
Subject: Re: bio linked list corruption.
Date: Mon, 24 Oct 2016 00:40:51 -0400 [thread overview]
Message-ID: <20161024044051.onmh4h6sc2bjxzzc@codemonkey.org.uk> (raw)
In-Reply-To: <b1bbcbfc-dba2-952d-f1c0-87f532d5936b@fb.com>
On Sun, Oct 23, 2016 at 05:32:21PM -0400, Chris Mason wrote:
>
>
> On 10/22/2016 11:20 AM, Dave Jones wrote:
> > On Fri, Oct 21, 2016 at 04:02:45PM -0400, Dave Jones wrote:
> >
> > > > It could be worth trying this, too:
> > > >
> > > > https://git.kernel.org/cgit/linux/kernel/git/luto/linux.git/commit/?h=x86/vmap_stack&id=174531fef4e8
> > > >
> > > > It occurred to me that the current code is a little bit fragile.
> > >
> > > It's been nearly 24hrs with the above changes, and it's been pretty much
> > > silent the whole time.
> > >
> > > The only thing of note over that time period has been a btrfs lockdep
> > > warning that's been around for a while, and occasional btrfs checksum
> > > failures, which I've been seeing for a while, but seem to have gotten
> > > worse since 4.8.
> > >
> > > I'm pretty confident in the disk being ok in this machine, so I think
> > > the checksum warnings are bogus. Chris suggested they may be the result
> > > of memory corruption, but there's little else going on.
> >
> > The only interesting thing last nights run was this..
> >
> > BUG: Bad page state in process kworker/u8:1 pfn:4e2b70
> > page:ffffea00138adc00 count:0 mapcount:0 mapping:ffff88046e9fc2e0 index:0xdf0
> > flags: 0x400000000000000c(referenced|uptodate)
> > page dumped because: non-NULL mapping
> > CPU: 3 PID: 24234 Comm: kworker/u8:1 Not tainted 4.9.0-rc1-think+ #11
> > Workqueue: writeback wb_workfn (flush-btrfs-2)
>
> Well crud, we're back to wondering if this is Btrfs or the stack
> corruption. Since the pagevecs are on the stack and this is a new
> crash, my guess is you'll be able to trigger it on xfs/ext4 too. But we
> should make sure.
Here's an interesting one from today, pointing the finger at xattrs again.
[69943.450108] Oops: 0003 [#1] PREEMPT SMP DEBUG_PAGEALLOC
[69943.454452] CPU: 1 PID: 21558 Comm: trinity-c60 Not tainted 4.9.0-rc1-think+ #11
[69943.463510] task: ffff8804f8dd3740 task.stack: ffffc9000b108000
[69943.468077] RIP: 0010:[<ffffffff810c3f6b>]
[69943.472704] [<ffffffff810c3f6b>] __lock_acquire.isra.32+0x6b/0x8c0
[69943.477489] RSP: 0018:ffffc9000b10b9e8 EFLAGS: 00010086
[69943.482368] RAX: ffffffff81789b90 RBX: ffff8804f8dd3740 RCX: 0000000000000000
[69943.487410] RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000
[69943.492515] RBP: ffffc9000b10ba18 R08: 0000000000000001 R09: 0000000000000000
[69943.497666] R10: 0000000000000001 R11: 00003f9cfa7f4e73 R12: 0000000000000000
[69943.502880] R13: 0000000000000000 R14: ffffc9000af7bd48 R15: ffff8804f8dd3740
[69943.508163] FS: 00007f64904a2b40(0000) GS:ffff880507a00000(0000) knlGS:0000000000000000
[69943.513591] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[69943.518917] CR2: ffffffff81789d28 CR3: 00000004a8f16000 CR4: 00000000001406e0
[69943.524253] DR0: 00007f5b97fd4000 DR1: 0000000000000000 DR2: 0000000000000000
[69943.529488] DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000600
[69943.534771] Stack:
[69943.540023] ffff880507bd74c0
[69943.545317] ffff8804f8dd3740 0000000000000046 0000000000000286[69943.545456] ffffc9000af7bd08
[69943.550930] 0000000000000100 ffffc9000b10ba50 ffffffff810c4b68[69943.551069] ffffffff810ba40c
[69943.556657] ffff880400000000 0000000000000000 ffffc9000af7bd48[69943.556796] Call Trace:
[69943.562465] [<ffffffff810c4b68>] lock_acquire+0x58/0x70
[69943.568354] [<ffffffff810ba40c>] ? finish_wait+0x3c/0x70
[69943.574306] [<ffffffff8178fef2>] _raw_spin_lock_irqsave+0x42/0x80
[69943.580335] [<ffffffff810ba40c>] ? finish_wait+0x3c/0x70
[69943.586237] [<ffffffff810ba40c>] finish_wait+0x3c/0x70
[69943.591992] [<ffffffff81169727>] shmem_fault+0x167/0x1b0
[69943.597807] [<ffffffff810ba6c0>] ? prepare_to_wait_event+0x100/0x100
[69943.603741] [<ffffffff8117b46d>] __do_fault+0x6d/0x1b0
[69943.609743] [<ffffffff8117f168>] handle_mm_fault+0xc58/0x1170
[69943.615822] [<ffffffff8117e553>] ? handle_mm_fault+0x43/0x1170
[69943.621971] [<ffffffff81044982>] __do_page_fault+0x172/0x4e0
[69943.628184] [<ffffffff81044d10>] do_page_fault+0x20/0x70
[69943.634449] [<ffffffff8132a897>] ? debug_smp_processor_id+0x17/0x20
[69943.640784] [<ffffffff81791f3f>] page_fault+0x1f/0x30
[69943.647170] [<ffffffff8133d69c>] ? strncpy_from_user+0x5c/0x170
[69943.653480] [<ffffffff8133d686>] ? strncpy_from_user+0x46/0x170
[69943.659632] [<ffffffff811f22a7>] setxattr+0x57/0x170
[69943.665846] [<ffffffff8132a897>] ? debug_smp_processor_id+0x17/0x20
[69943.672172] [<ffffffff810c1f09>] ? get_lock_stats+0x19/0x50
[69943.678558] [<ffffffff810a58f6>] ? sched_clock_cpu+0xb6/0xd0
[69943.685007] [<ffffffff810c40cf>] ? __lock_acquire.isra.32+0x1cf/0x8c0
[69943.691542] [<ffffffff8132a8b3>] ? __this_cpu_preempt_check+0x13/0x20
[69943.698130] [<ffffffff8109b9bc>] ? preempt_count_add+0x7c/0xc0
[69943.704791] [<ffffffff811ecda1>] ? __mnt_want_write+0x61/0x90
[69943.711519] [<ffffffff811f2638>] SyS_fsetxattr+0x78/0xa0
[69943.718300] [<ffffffff8100255c>] do_syscall_64+0x5c/0x170
[69943.724949] [<ffffffff81790a4b>] entry_SYSCALL64_slow_path+0x25/0x25
[69943.731521] Code:
[69943.738124] 00 83 fe 01 0f 86 0e 03 00 00 31 d2 4c 89 f7 44 89 45 d0 89 4d d4 e8 75 e7 ff ff 8b 4d d4 48 85 c0 44 8b 45 d0 0f 84 d8 02 00 00 <f0> ff 80 98 01 00 00 8b 15 e0 21 8f 01 45 8b 8f 50 08 00 00 85 [69943.745506] RIP
[69943.752432] [<ffffffff810c3f6b>] __lock_acquire.isra.32+0x6b/0x8c0
RSP <ffffc9000b10b9e8>
[69943.766856] CR2: ffffffff81789d28
next prev parent reply other threads:[~2016-10-24 4:41 UTC|newest]
Thread overview: 118+ messages / expand[flat|nested] mbox.gz Atom feed top
2016-10-11 14:45 btrfs " Dave Jones
2016-10-11 15:11 ` Al Viro
2016-10-11 15:19 ` Dave Jones
2016-10-11 15:20 ` Chris Mason
2016-10-11 15:49 ` Dave Jones
2016-10-11 15:54 ` Chris Mason
2016-10-11 16:25 ` Dave Jones
2016-10-12 13:47 ` Dave Jones
2016-10-12 14:40 ` Dave Jones
2016-10-12 14:42 ` Chris Mason
2016-10-13 18:16 ` Dave Jones
2016-10-13 21:18 ` Chris Mason
2016-10-13 21:56 ` Dave Jones
2016-10-16 0:42 ` Dave Jones
2016-10-18 1:07 ` Chris Mason
2016-10-18 22:42 ` Dave Jones
2016-10-18 23:12 ` Jens Axboe
2016-10-18 23:31 ` Chris Mason
2016-10-18 23:36 ` Jens Axboe
2016-10-18 23:39 ` Linus Torvalds
2016-10-18 23:42 ` Chris Mason
2016-10-19 0:10 ` Linus Torvalds
2016-10-19 0:19 ` Chris Mason
2016-10-19 0:28 ` Linus Torvalds
2016-10-20 22:48 ` Dave Jones
2016-10-19 1:05 ` Andy Lutomirski
2016-10-20 22:50 ` Dave Jones
2016-10-20 23:01 ` Andy Lutomirski
2016-10-20 23:03 ` Dave Jones
2016-10-20 23:23 ` Andy Lutomirski
2016-10-21 20:02 ` Dave Jones
2016-10-21 20:17 ` Chris Mason
2016-10-21 20:23 ` Dave Jones
2016-10-21 20:38 ` Chris Mason
2016-10-21 20:41 ` Josef Bacik
2016-10-21 21:11 ` Dave Jones
2016-10-22 15:20 ` Dave Jones
2016-10-23 21:32 ` Chris Mason
2016-10-24 4:40 ` Dave Jones [this message]
2016-10-24 13:42 ` Chris Mason
2016-10-26 0:27 ` Dave Jones
2016-10-26 1:33 ` Linus Torvalds
2016-10-26 1:39 ` Linus Torvalds
2016-10-26 16:30 ` Dave Jones
2016-10-26 16:48 ` Linus Torvalds
2016-10-26 18:18 ` Dave Jones
2016-10-26 18:42 ` Dave Jones
2016-10-26 19:06 ` Linus Torvalds
2016-10-26 20:00 ` Chris Mason
2016-10-26 21:52 ` Chris Mason
2016-10-26 22:21 ` Linus Torvalds
2016-10-26 22:40 ` Dave Jones
2016-10-26 22:51 ` Linus Torvalds
2016-10-26 22:55 ` Jens Axboe
2016-10-26 22:58 ` Linus Torvalds
2016-10-26 23:03 ` Jens Axboe
2016-10-26 23:07 ` Dave Jones
2016-10-26 23:08 ` Linus Torvalds
2016-10-26 23:20 ` Jens Axboe
2016-10-26 23:38 ` Chris Mason
2016-10-26 23:47 ` Dave Jones
2016-10-27 0:00 ` Jens Axboe
2016-10-27 13:33 ` Chris Mason
2016-10-31 18:55 ` Dave Jones
2016-10-31 19:35 ` Linus Torvalds
2016-10-31 19:44 ` Chris Mason
2016-11-06 16:55 ` btrfs btree_ctree_super fault Dave Jones
2016-11-08 14:59 ` Dave Jones
2016-11-08 15:08 ` Chris Mason
2016-11-10 14:35 ` Dave Jones
2016-11-10 15:27 ` Chris Mason
2016-11-23 19:34 ` bio linked list corruption Dave Jones
2016-11-23 19:58 ` Dave Jones
2016-12-01 15:32 ` btrfs_destroy_inode warn (outstanding extents) Dave Jones
2016-12-03 16:48 ` Dave Jones
2016-12-07 16:15 ` Dave Jones
2016-12-09 21:12 ` Steven Rostedt
2016-12-04 23:04 ` bio linked list corruption Vegard Nossum
2016-12-05 11:10 ` Vegard Nossum
2016-12-05 17:09 ` Vegard Nossum
2016-12-05 17:21 ` Dave Jones
2016-12-05 17:55 ` Linus Torvalds
2016-12-05 19:11 ` Vegard Nossum
2016-12-05 20:10 ` Linus Torvalds
2016-12-05 20:35 ` Linus Torvalds
2016-12-05 21:33 ` Vegard Nossum
2016-12-06 8:42 ` Vegard Nossum
2016-12-06 8:16 ` Peter Zijlstra
2016-12-06 8:36 ` Ingo Molnar
2016-12-06 16:33 ` Linus Torvalds
2016-12-05 20:10 ` Vegard Nossum
2016-12-05 18:11 ` Andy Lutomirski
2016-12-05 18:25 ` Linus Torvalds
2016-12-05 18:26 ` Vegard Nossum
2016-10-26 23:19 ` Chris Mason
2016-10-26 23:21 ` Jens Axboe
2016-10-27 6:33 ` Christoph Hellwig
2016-10-27 16:34 ` Linus Torvalds
2016-10-27 16:36 ` Jens Axboe
2016-10-26 23:01 ` Dave Jones
2016-10-26 23:05 ` Jens Axboe
2016-10-26 22:52 ` Jens Axboe
2016-10-26 22:07 ` Linus Torvalds
2016-10-26 22:54 ` Chris Mason
2016-10-27 5:41 ` Dave Chinner
2016-10-27 17:23 ` Dave Jones
2016-10-24 20:06 ` Andy Lutomirski
2016-10-24 20:46 ` Linus Torvalds
2016-10-24 21:17 ` Linus Torvalds
2016-10-24 21:50 ` Linus Torvalds
2016-10-24 22:02 ` Chris Mason
2016-10-24 22:42 ` Andy Lutomirski
2016-10-25 0:00 ` Linus Torvalds
2016-10-25 1:09 ` Andy Lutomirski
2016-10-19 17:09 ` Philipp Hahn
2016-10-19 17:43 ` Linus Torvalds
2016-10-20 6:52 ` Ingo Molnar
2016-10-20 7:17 ` Thomas Gleixner
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