Anyone can give me some advice?
On 2013/5/26 20:21, Joseph Qi wrote:
> I have triggered a BUG at buffer_head_io.c. Belowing is the code where
> the BUG is triggered:
> if (buffer_needs_validate(bh)) {
> /* We never set NeedsValidate if the
> * buffer was held by the journal, so
> * that better not have changed */
> BUG_ON(buffer_jbd(bh));
> clear_buffer_needs_validate(bh);
> status = validate(sb, bh);
> if (status) {
> put_bh(bh);
> bhs[i] = NULL;
> continue;
> }
> }
>
> As the comment says, BH_NeedsValidate and buffer_jbd are mutually
> exclusive. Has anyone else also encountered this issue? My case is
> iSCSI link down and then restore with system 80% stress.
>
> Here is the stack:
> [ 2406.046006] kernel BUG at fs/ocfs2/buffer_head_io.c:343!
> [ 2406.046010] invalid opcode: 0000 [#1] SMP
> ...
> [ 2406.046226] Pid: 10743, comm: fio Tainted: G N 3.0.13-0.27-xen
> #2 Tecal RH2285
> [ 2406.046233] RIP: e030:[<ffffffffa05a7e84>] [<ffffffffa05a7e84>]
> ocfs2_read_blocks+0x734/0x8d0 [ocfs2]
> [ 2406.046254] RSP: e02b:ffff8800e41a9c18 EFLAGS: 00010206
> [ 2406.046259] RAX: 0000000000000000 RBX: ffff8800f9a27470 RCX:
> 0000000000000008
> [ 2406.046265] RDX: 0000000002310029 RSI: ffff8800f9a27470 RDI:
> ffff8800f9bb7690
> [ 2406.046270] RBP: 0000000000000000 R08: ffff8800e3684b48 R09:
> 0000000000000002
> [ 2406.046276] R10: ffff8800f9bb76d8 R11: ffffffffa05cbc20 R12:
> ffff8800e41a9cf0
> [ 2406.046282] R13: 0000000000000000 R14: 0000000000000000 R15:
> 0000000000000000
> [ 2406.046292] FS: 00007f871f4a8700(0000) GS:ffff88000401a000(0000)
> knlGS:0000000000000000
> [ 2406.046298] CS: e033 DS: 0000 ES: 0000 CR0: 000000008005003b
> [ 2406.046303] CR2: 00007f871e585820 CR3: 00000000e7870000 CR4:
> 0000000000002620
> [ 2406.046309] DR0: 0000000000000000 DR1: 0000000000000000 DR2:
> 0000000000000000
> [ 2406.046315] DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7:
> 0000000000000400
> [ 2406.046321] Process fio (pid: 10743, threadinfo ffff8800e41a8000, task
> ffff8800e41ae5c0)
> [ 2406.046327] Stack:
> [ 2406.046330] ffff8800e41ae5c0 ffff8800f9bb726c 000000003432205b
> 0000000500000008
> [ 2406.046338] <0> ffff8800e41aea68 ffff8800e41ae5c0 ffff8800e41aea68
> ffff8800e41ae5c0
> [ 2406.046349] <0> 00000000f9bb726c ffff8800e41aea68 ffff8800e41ae5c0
> ffffffffa05cc2f0
> [ 2406.046360] Call Trace:
> [ 2406.046393] [<ffffffffa05cbdd7>] ocfs2_read_inode_block_full+0x37/0x60
> [ocfs2]
> [ 2406.046423] [<ffffffffa05bee5d>] ocfs2_inode_lock_full_nested+0x5bd/0xdd0
> [ocfs2]
> [ 2406.046451] [<ffffffffa05c9f9d>] __ocfs2_change_file_space+0x1bd/0x1800
> [ocfs2]
> [ 2406.046480] [<ffffffffa05cb669>] ocfs2_fallocate+0x89/0x90 [ocfs2]
> [ 2406.046503] [<ffffffff800d7264>] do_fallocate+0x104/0x110
> [ 2406.046512] [<ffffffff800d72b6>] sys_fallocate+0x46/0x70
> [ 2406.046521] [<ffffffff80007378>] system_call_fastpath+0x16/0x1b
> [ 2406.046530] [<00007f871e585845>] 0x7f871e585845
> [ 2406.046534] Code: ea ff ff ff 41 b9 c6 00 00 00 49 c7 c0 40 4b 62 a0 48 c7
> c7 28 f8 62 a0 31 c0 e8 1d f3 dc df 48 8b 05 81 58 f8 ff e9 87 fe ff ff <0f>
> 0b eb fe 48 8b bc 24 80 00 00 00 41 bd 01 00 00 00 e8 95 0c
> [ 2406.046611] RIP [<ffffffffa05a7e84>] ocfs2_read_blocks+0x734/0x8d0 [ocfs2]
> [ 2406.046625] RSP <ffff8800e41a9c18>
>
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