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Subject3.1-rc9: BUG: soft lockup in find_get_pages+0x4e/0x140
Hi,

With 3.1-rc9 during a filesystem dump, this occurred, I thought a previous
patch fixed this but it did not, it occurs MUCH less (first time in a
couple of weeks) but the problem still occurs.

Thoughts?

[675100.763357] BUG: soft lockup - CPU#0 stuck for 22s! [dump:11066]
[675100.763361] CPU 0
[675100.763364] Pid: 11066, comm: dump Not tainted 3.1.0-rc9 #1 Supermicro X8DTH-i/6/iF/6F/X8DTH
[675100.763368] RIP: 0010:[<ffffffff81078eee>] [<ffffffff81078eee>] find_get_pages+0x4e/0x140
[675100.763375] RSP: 0018:ffff8806e6603d28 EFLAGS: 00000246
[675100.763377] RAX: ffff880019a0a210 RBX: ffffea0028a65820 RCX: 000000000000000e
[675100.763379] RDX: 0000000000000000 RSI: 0000000000000000 RDI: ffffea0029e0faf0
[675100.763381] RBP: 0000000001200ae9 R08: 0000000000000000 R09: ffff8806e6603ce8
[675100.763383] R10: 0000000001200b03 R11: 0000000000000002 R12: ffffffff810805a4
[675100.763386] R13: ffff880c3fffae00 R14: ffff880c3fffae00 R15: ffff8806e6603db8
[675100.763392] FS: 00007fe9b56cc760(0000) GS:ffff88063fc00000(0000) knlGS:0000000000000000
[675100.763395] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[675100.763397] CR2: 00007f2da3718fa8 CR3: 0000000c22da4000 CR4: 00000000000006f0
[675100.763400] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[675100.763402] DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000400
[675100.763405] Process dump (pid: 11066, threadinfo ffff8806e6602000, task ffff880c21c931a0)
[675100.763407] Stack:
[675100.763408] ffff8800398aaa88 0000000000000000 ffff88063fc0d560 0000000000000005
[675100.763415] ffff880c270652d8 ffff8806e6603da8 00000000000067b5 ffffffffffffffff
[675100.763421] ffff880c270652d8 ffffea0028a65820 000000000000000d ffffffff81083d15
[675100.763427] Call Trace:
[675100.763433] [<ffffffff81083d15>] ? pagevec_lookup+0x15/0x20
[675100.763437] [<ffffffff810843c6>] ? invalidate_mapping_pages+0x66/0x170
[675100.763442] [<ffffffff812bc841>] ? blkdev_ioctl+0x6b1/0x700
[675100.763451] [<ffffffff810e405b>] ? block_ioctl+0x3b/0x50
[675100.763455] [<ffffffff810c692e>] ? do_vfs_ioctl+0x8e/0x4f0
[675100.763459] [<ffffffff810c6dd9>] ? sys_ioctl+0x49/0x80
[675100.763464] [<ffffffff8168b17b>] ? system_call_fastpath+0x16/0x1b
[675100.763466] Code: 48 89 de 4c 89 ef e8 72 37 25 00 85 c0 89 c1 0f 84 a8 00 00 00 49 89 df 31 d2 31 f6 45 31 f6 66 0f 1f 44 00 00 49 8b 07 48 8b 38
[675100.763484] 85 ff 74 3e 40 f6 c7 03 75 5e 44 8b 47 1c 45 85 c0 74 ec 45
[675100.763497] Call Trace:
[675100.763500] [<ffffffff81083d15>] ? pagevec_lookup+0x15/0x20
[675100.763503] [<ffffffff810843c6>] ? invalidate_mapping_pages+0x66/0x170
[675100.763507] [<ffffffff812bc841>] ? blkdev_ioctl+0x6b1/0x700
[675100.763510] [<ffffffff810e405b>] ? block_ioctl+0x3b/0x50
[675100.763513] [<ffffffff810c692e>] ? do_vfs_ioctl+0x8e/0x4f0
[675100.763516] [<ffffffff810c6dd9>] ? sys_ioctl+0x49/0x80
[675100.763519] [<ffffffff8168b17b>] ? system_call_fastpath+0x16/0x1b
[675101.484164] BUG: soft lockup - CPU#10 stuck for 23s! [dump:11068]
[675101.484167] CPU 10
[675101.484170] Pid: 11068, comm: dump Not tainted 3.1.0-rc9 #1 Supermicro X8DTH-i/6/iF/6F/X8DTH
[675101.484173] RIP: 0010:[<ffffffff81078eee>] [<ffffffff81078eee>] find_get_pages+0x4e/0x140
[675101.484180] RSP: 0018:ffff880bf713dd28 EFLAGS: 00000246
[675101.484182] RAX: ffff8800ae90af00 RBX: ffffea00190d1288 RCX: 000000000000000e
[675101.484183] RDX: 0000000000000000 RSI: 0000000000000000 RDI: ffffea0019046600
[675101.484185] RBP: 0000000000900eef R08: 0000000000000000 R09: ffff880bf713dce8
[675101.484186] R10: 0000000000900efd R11: 000000000000000d R12: ffffffff810805a4
[675101.484188] R13: ffff880c3fffae00 R14: ffff880c3fffae00 R15: ffff880bf713ddb8
[675101.484190] FS: 00007fe9b56cc760(0000) GS:ffff880c3fc80000(0000) knlGS:0000000000000000
[675101.484192] CS: 0010 DS: 0000 ES: 0000 CR0: 000000008005003b
[675101.484193] CR2: 00007f1577baefc8 CR3: 0000000bc3458000 CR4: 00000000000006e0
[675101.484195] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[675101.484196] DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000400
[675101.484198] Process dump (pid: 11068, threadinfo ffff880bf713c000, task ffff880c25b2e310)
[675101.484199] Stack:
[675101.484201] ffff88003b6f6bc0 000000000000000a ffff880c3fc8d560 0000000000000005
[675101.484204] ffff880c270652d8 ffff880bf713dda8 00000000000009f2 ffffffffffffffff
[675101.484208] ffff880c270652d8 ffffea00190d1288 000000000000000d ffffffff81083d15
[675101.484211] Call Trace:
[675101.484217] [<ffffffff81083d15>] ? pagevec_lookup+0x15/0x20
[675101.484220] [<ffffffff810843c6>] ? invalidate_mapping_pages+0x66/0x170
[675101.484226] [<ffffffff812bc841>] ? blkdev_ioctl+0x6b1/0x700
[675101.484230] [<ffffffff810e405b>] ? block_ioctl+0x3b/0x50
[675101.484234] [<ffffffff810c692e>] ? do_vfs_ioctl+0x8e/0x4f0
[675101.484238] [<ffffffff810c6dd9>] ? sys_ioctl+0x49/0x80
[675101.484242] [<ffffffff8168b17b>] ? system_call_fastpath+0x16/0x1b
[675101.484243] Code: 48 89 de 4c 89 ef e8 72 37 25 00 85 c0 89 c1 0f 84 a8 00 00 00 49 89 df 31 d2 31 f6 45 31 f6 66 0f 1f 44 00 00 49 8b 07 48 8b 38
[675101.484257] 85 ff 74 3e 40 f6 c7 03 75 5e 44 8b 47 1c 45 85 c0 74 ec 45
[675101.484263] Call Trace:
[675101.484266] [<ffffffff81083d15>] ? pagevec_lookup+0x15/0x20
[675101.484268] [<ffffffff810843c6>] ? invalidate_mapping_pages+0x66/0x170
[675101.484272] [<ffffffff812bc841>] ? blkdev_ioctl+0x6b1/0x700
[675101.484275] [<ffffffff810e405b>] ? block_ioctl+0x3b/0x50
[675101.484277] [<ffffffff810c692e>] ? do_vfs_ioctl+0x8e/0x4f0
[675101.484279] [<ffffffff810c6dd9>] ? sys_ioctl+0x49/0x80
[675101.484282] [<ffffffff8168b17b>] ? system_call_fastpath+0x16/0x1b
Justin.


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