linux-kernel - OCFS2: ocfs2_read_blocks:285 ERROR: block 532737 had the JBD bit set while I was in lock

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Message-ID: <CAFLxGvwLJs0ZrOZN-g=fCDEN4eAOQMjW_Nojm9fm5Rq0GKk9AQ@mail.gmail.com>
Date:	Mon, 2 Sep 2013 22:32:49 +0200
From:	richard -rw- weinberger <richard.weinberger@...il.com>
To:	"ocfs2-users@....oracle.com" <ocfs2-users@....oracle.com>,
	linux-fsdevel <linux-fsdevel@...r.kernel.org>,
	LKML <linux-kernel@...r.kernel.org>
Subject: OCFS2: ocfs2_read_blocks:285 ERROR: block 532737 had the JBD bit set
 while I was in lock_buffer!

Hi!

Today one of my computers crashed with the following panic.
The machine is heavily using reflinks.
Looks like it managed to hit a CATCH_BH_JBD_RACES error check.

<3>[37628.934461] (reflink,512,0):ocfs2_reflink_ioctl:4459 ERROR: status = -17
<3>[37628.943160] (kworker/u:2,809,1):ocfs2_read_blocks:285 ERROR:
block 532737 had the JBD bit set while I was in lock_buffer!
<4>[37628.943169] ------------[ cut here ]------------
<2>[37628.944464] kernel BUG at
/home/rw/work/ssworkstation/maker/_source/kernel/fs/ocfs2/buffer_head_io.c:286!
<4>[37628.945134] invalid opcode: 0000 [#1] PREEMPT SMP
<4>[37628.945809] CPU 1
<4>[37628.945817] Pid: 809, comm: kworker/u:2 Not tainted 3.8.4+ #46
               /
<4>[37628.947167] RIP: 0010:[<ffffffff8125afa0>]  [<ffffffff8125afa0>]
ocfs2_read_blocks+0x410/0x610
<4>[37628.947880] RSP: 0018:ffff880234631908  EFLAGS: 00010292
<4>[37628.948593] RAX: 000000000000006d RBX: 0000000000000001 RCX:
0000000000000067
<4>[37628.949317] RDX: 0000000000000048 RSI: 0000000000000046 RDI:
ffffffff8214c0dc
Oops#1 Part3
<4>[37628.950037] RBP: ffff880234631988 R08: 000000000000000a R09:
000000000000d490
<4>[37628.950758] R10: 0000000000000000 R11: 0000000000000004 R12:
0000000000082101
<4>[37628.951477] R13: ffff880233147980 R14: 0000000000000000 R15:
ffff880216ca2208
<4>[37628.952201] FS:  0000000000000000(0000)
GS:ffff88023e280000(0000) knlGS:0000000000000000
<4>[37628.952936] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
<4>[37628.953669] CR2: 00007fe7ea29fc62 CR3: 0000000006c0b000 CR4:
00000000000407e0
<4>[37628.954421] DR0: 0000000000000000 DR1: 0000000000000000 DR2:
0000000000000000
<4>[37628.955176] DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7:
0000000000000400
<4>[37628.955925] Process kworker/u:2 (pid: 809, threadinfo
ffff880234630000, task ffff880234ba86e0)
<4>[37628.956689] Stack:
<4>[37628.957461]  0000000000082101 ffffea0008900880 ffff880234631948
0000000000001000
<4>[37628.958250]  0000000000082102 0000000000082102 ffffffff81295eb0
0000000000000000
Oops#1 Part2
<4>[37628.959044]  ffff88023428c000 0000000100000000 0000000000000000
ffff8802346319f0
<4>[37628.959844] Call Trace:
<4>[37628.960639]  [<ffffffff81295eb0>] ? ocfs2_read_refcount_block+0x50/0x50
<4>[37628.961453]  [<ffffffff81295e8b>] ocfs2_read_refcount_block+0x2b/0x50
<4>[37628.962249]  [<ffffffff81297417>] ocfs2_get_refcount_tree+0xa7/0x350
<4>[37628.963042]  [<ffffffff8115c6d1>] ? __find_get_block+0xa1/0x1e0
<4>[37628.963835]  [<ffffffff8129c5e8>] ocfs2_lock_refcount_tree+0x48/0x4f0
<4>[37628.964645]  [<ffffffff8124fccb>] ocfs2_remove_btree_range+0xab/0xb30
<4>[37628.965452]  [<ffffffff81253a99>] ocfs2_commit_truncate+0x139/0x550
<4>[37628.966247]  [<ffffffff812844c0>] ? ocfs2_extend_trans+0x1c0/0x1c0
<4>[37628.967049]  [<ffffffff8127e36e>] ocfs2_evict_inode+0x89e/0x2530
<4>[37628.967851]  [<ffffffff81154a78>] ? __inode_wait_for_writeback+0x68/0xc0
<4>[37628.968645]  [<ffffffff8114878f>] evict+0xaf/0x1b0
<4>[37628.969432]  [<ffffffff81149495>] iput+0x105/0x1a0
Oops#1 Part1
<4>[37628.970213]  [<ffffffff8125b557>] __ocfs2_drop_dl_inodes.isra.14+0x47/0x80
<4>[37628.971002]  [<ffffffff8125bd65>] ocfs2_drop_dl_inodes+0x25/0xa0
<4>[37628.971788]  [<ffffffff81087dc7>] process_one_work+0x147/0x470
<4>[37628.972580]  [<ffffffff810884bd>] worker_thread+0x14d/0x3f0
<4>[37628.973381]  [<ffffffff81088370>] ? rescuer_thread+0x240/0x240
<4>[37628.974175]  [<ffffffff8108db5b>] kthread+0xbb/0xc0
<4>[37628.974960]  [<ffffffff8108daa0>] ? __kthread_parkme+0x80/0x80
<4>[37628.975747]  [<ffffffff817dd9ec>] ret_from_fork+0x7c/0xb0
<4>[37628.976529]  [<ffffffff8108daa0>] ? __kthread_parkme+0x80/0x80
<4>[37628.977307] Code: 0f 0b 4c 89 ff e8 11 0b f0 ff e9 f2 fc ff ff
48 b8 00 00 00 00 00 00 00 10 48 85 05 2b 58 9d 00 74 09 48 85 05 c2
79 f4 00 74 02 <0f> 0b 65 48 8b 14 25 70 b8 00 00 48 8d 82 28 e0 ff ff
4d 8b 67
<1>[37628.979053] RIP  [<ffffffff8125afa0>] ocfs2_read_blocks+0x410/0x610
<4>[37628.979893]  RSP <ffff880234631908>
<4>[37628.983420] ---[ end trace c03a48f44cf30d5e ]---

-- 
Thanks,
//richard
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