next-20130607 BUG: Bad page state in process systemd pfn:127643

next-20130607 BUG: Bad page state in process systemd pfn:127643

[Valdis Kletnieks]

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(This may or may not be collateral damage from my previous e-mail
regarding a BUG at lib/idr.c:424)

Saw several of these booting next-20130607 before it even got to
a single-user prompt.  -0603 is OK, so whatever did it is a recent patch.
Several people touched mm/page_alloc.c on 06/07, have CC'ed them.


[   18.302903] BUG: Bad page state in process systemd  pfn:127643
[   18.303005] page:ffffea000409dea8 count:0 mapcount:0 mapping:          (null) index:0xd
[   18.303127] page flags: 0x400000000000004c(referenced|uptodate|active)
[   18.303543] Modules linked in:
[   18.303691] CPU: 1 PID: 1 Comm: systemd Not tainted 3.10.0-rc4-next-20130607 #79
[   18.303810] Hardware name: Dell Inc. Latitude E6530/07Y85M, BIOS A11 03/12/2013
[   18.303929]  0000000000000000 ffff88012d0cfbe0 ffffffff815ebdd7 ffffea000409dea8
[   18.304306]  ffff88012d0cfbf8 ffffffff810d615e ffffea000409dea8 ffff88012d0cfc38
[   18.304658]  ffffffff810d6248 0000000000000001 400000000000004c ffffea000409dea8
[   18.305012] Call Trace:
[   18.305101]  [<ffffffff815ebdd7>] dump_stack+0x4f/0x9a
[   18.305198]  [<ffffffff810d615e>] bad_page+0xd8/0xf1
[   18.305300]  [<ffffffff810d6248>] free_pages_prepare+0xd1/0x1a9
[   18.305396]  [<ffffffff810d6902>] free_hot_cold_page+0x1f/0x103
[   18.305494]  [<ffffffff810d6a52>] free_hot_cold_page_list+0x6c/0xc1
[   18.305591]  [<ffffffff810dbedb>] release_pages+0x187/0x196
[   18.305689]  [<ffffffff810dc7a9>] __pagevec_release+0x1b/0x25
[   18.305787]  [<ffffffff810dc90e>] pagevec_release+0xe/0x10
[   18.305884]  [<ffffffff810dd05b>] truncate_inode_pages_range+0x19e/0x420
[   18.305982]  [<ffffffff810dd2ea>] truncate_inode_pages+0xd/0xf
[   18.306082]  [<ffffffff81127ae4>] evict+0xf6/0x1a8
[   18.306177]  [<ffffffff811282ef>] iput+0x1bc/0x1c9
[   18.306353]  [<ffffffff8111e9ca>] do_unlinkat+0x137/0x1a6
[   18.306452]  [<ffffffff81077dd6>] ? trace_hardirqs_on_caller+0x17d/0x199
[   18.306554]  [<ffffffff8124291e>] ? trace_hardirqs_on_thunk+0x3a/0x3f
[   18.306651]  [<ffffffff8111f67d>] SyS_unlinkat+0x1d/0x29
[   18.306746]  [<ffffffff815f9dd2>] system_call_fastpath+0x16/0x1b
[   18.306914] Disabling lock debugging due to kernel taint

Hit a whole stream of these - identical tracebacks for different pfn's.
Almost continuous and in order, but not quite.

[   18.302903] BUG: Bad page state in process systemd  pfn:127643
[   18.307011] BUG: Bad page state in process systemd  pfn:127642
[   18.310766] BUG: Bad page state in process systemd  pfn:127641
[   18.319703] BUG: Bad page state in process systemd  pfn:127640
[   18.323423] BUG: Bad page state in process systemd  pfn:12763f
[   18.327138] BUG: Bad page state in process systemd  pfn:12763e
[   18.330855] BUG: Bad page state in process systemd  pfn:12763d
[   18.334574] BUG: Bad page state in process systemd  pfn:12763c
[   18.338279] BUG: Bad page state in process systemd  pfn:12763b
[   18.347197] BUG: Bad page state in process systemd  pfn:12763a
[   18.350913] BUG: Bad page state in process systemd  pfn:127639
[   18.354635] BUG: Bad page state in process systemd  pfn:127638
[   18.358346] BUG: Bad page state in process systemd  pfn:127637
[   18.362058] BUG: Bad page state in process systemd  pfn:127636
[   18.370971] BUG: Bad page state in process systemd  pfn:127651
[   18.374690] BUG: Bad page state in process systemd  pfn:127650
[   18.378400] BUG: Bad page state in process systemd  pfn:12764f
[   18.382101] BUG: Bad page state in process systemd  pfn:12764e
[   18.385811] BUG: Bad page state in process systemd  pfn:12764d
[   18.394732] BUG: Bad page state in process systemd  pfn:12764c
[   18.398433] BUG: Bad page state in process systemd  pfn:12764b
[   18.402173] BUG: Bad page state in process systemd  pfn:12764a
[   18.405885] BUG: Bad page state in process systemd  pfn:127649
[   18.409601] BUG: Bad page state in process systemd  pfn:127648
[   18.413318] BUG: Bad page state in process systemd  pfn:127647
[   18.422216] BUG: Bad page state in process systemd  pfn:127646
[   18.425928] BUG: Bad page state in process systemd  pfn:127645
[   18.429633] BUG: Bad page state in process systemd  pfn:127644
[   18.433343] BUG: Bad page state in process systemd  pfn:12765f
[   18.437049] BUG: Bad page state in process systemd  pfn:12765e
[   18.445974] BUG: Bad page state in process systemd  pfn:12765d
[   18.449701] BUG: Bad page state in process systemd  pfn:12765c
[   18.453405] BUG: Bad page state in process systemd  pfn:12765b
[   18.457123] BUG: Bad page state in process systemd  pfn:12765a
[   18.460827] BUG: Bad page state in process systemd  pfn:127659
[   18.464549] BUG: Bad page state in process systemd  pfn:127658
[   18.473475] BUG: Bad page state in process systemd  pfn:127657
[   18.477187] BUG: Bad page state in process systemd  pfn:127656
[   18.480893] BUG: Bad page state in process systemd  pfn:127655
[   18.484608] BUG: Bad page state in process systemd  pfn:127654
[   18.488326] BUG: Bad page state in process systemd  pfn:127653
[   18.497245] BUG: Bad page state in process systemd  pfn:127652
[   18.500956] BUG: Bad page state in process systemd  pfn:12766d
[   18.504687] BUG: Bad page state in process systemd  pfn:12766c
[   18.508412] BUG: Bad page state in process systemd  pfn:12766b
[   18.512127] BUG: Bad page state in process systemd  pfn:12766a
[   18.515842] BUG: Bad page state in process systemd  pfn:127669
[   18.524752] BUG: Bad page state in process systemd  pfn:127668
[   18.528467] BUG: Bad page state in process systemd  pfn:127667
[   18.532194] BUG: Bad page state in process systemd  pfn:127666
[   18.535923] BUG: Bad page state in process systemd  pfn:127665
[   18.539625] BUG: Bad page state in process systemd  pfn:127664
[   18.548532] BUG: Bad page state in process systemd  pfn:127663
[   18.552245] BUG: Bad page state in process systemd  pfn:127662
[   18.555960] BUG: Bad page state in process systemd  pfn:127661
[   18.559672] BUG: Bad page state in process systemd  pfn:127660
[   18.563383] BUG: Bad page state in process systemd  pfn:12767b
[   18.567155] BUG: Bad page state in process systemd  pfn:12767a
[   18.576067] BUG: Bad page state in process systemd  pfn:127679
[   18.579776] BUG: Bad page state in process systemd  pfn:127678



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Re: next-20130607 BUG: Bad page state in process systemd pfn:127643

[Chen Gang]

Hello Valdis:

Could you delete the patch: (8094dd4 mm/page_alloc.c: add additional
checking and return value for the 'table->data') and try it again to
see whether still has this issue ?

If no issue any more, it means I cause this issue directly, and I
should continue to analyze it to find the root cause.

Else (still has this issue), please continue to delete another related
patches step by step to catch the direct cause (to speed up, each time,
can delete half of related patches to see the result).

When catch the direct cause, as one of related members, I need continue
to find the root cause with you together.

Thanks.


Also sorry for replying late. You already sent the mail to me. but I
don't know why I did not receive it. and yesterday I checked my the
other mail which also can receive mailing list, then find this mail.

So if sent/cc mail to me and get no response, please help to re-send again.


Thanks.
-- 
Chen Gang

Asianux Corporation