Re: OCFS2: ocfs2_read_blocks:285 ERROR: block 532737 had the JBD bit set while I was in lock_buffer!

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Hello,

It seems like Sunil has fixed a similar issue against ocfs2-1.4
several years ago:
https://oss.oracle.com/git/?p=ocfs2-1.4.git;a=commitdiff_plain;h=2fd250839d0f5073af8d42e97f1db74beb621674;hp=e882faf84930431524f84598caea7d4e9a9529c5
https://oss.oracle.com/git/?p=ocfs2-1.4.git;a=commitdiff_plain;h=eccff85213d4c2762f787d9e7cb1503042ba75b9;hp=edc147473ffd9c03790dc4502b893823f44a9ec4

The old bug ticket for the discussion:
https://oss.oracle.com/bugzilla/show_bug.cgi?id=1235

This fix is specifically for ocfs2-1.4, but Mark once mentioned that
the BUG() there can be removed if we have a good explanation for this
sort of behavior, is it time to have it in mainline?

Thanks,
-Jeff
On 09/03/2013 04:32 AM, richard -rw- weinberger wrote:

> 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 ]---
> 


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