Re: 3.19.0 / kswap0 bug

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Thank you for your reply,

I am going to try vanilla sources and let you know. It is going to
take some time thou, because I don't have to dd another drive for a
little while :)

Cheers
Pavol

On Thu, Feb 26, 2015 at 3:23 PM, Vlastimil Babka <vbabka@xxxxxxx> wrote:
> On 02/21/2015 05:16 PM, Pavol Cupka wrote:
>> Hi list,
>>
>> I am encountering a bug on my desktop PC. Running gentoo-sources
>> (patches for gentoo) 3.19.0, gcc 4.8.4, glibc 2.19
>
> Although there don't seem to be many gentoo patches on top, you should try
> reproducing this with vanilla 3.19 kernel first.
>
>> MB: GA-MA785GT-UD3H
>> CPU: AMD Phenom(tm) II X4 965 Processor
>> RAM: 2x DIMM 1333 MHz 2GB
>> SATA controller: SB7x0/SB8x0/SB9x0 SATA Controller [AHCI mode]
>> HDD: 3x HGST 4TB disks
>> SSD: Intel SSD SSDSC2CT060A3 fw: i300
>> swap on first two hdd 1,5 GB in size
>> /dev/sda2                               partition       1571836 85824   -1
>> /dev/sdb2                               partition       1571836 0       -2
>>
>> this is what I've got after running dd if=/dev/urandom of=/dev/sdd1 bs=512
>> the computer was not doing other things, there is a glances instance
>> running in tmux and the dd is also running in the same tmux session.
>
> Is it easily reproducible? Is there a last known-working kernel version? If yes,
> bisect could be an option.
>
>> [13397.986449] BUG: Bad page state in process kswapd0  pfn:104b06
>> [13397.986462] page:ffffea000412c180 count:0 mapcount:-1 mapping:
>>     (null) index:0x45fc53
>> [13397.986493] flags: 0x200000000000008(uptodate)
>> [13397.986513] page dumped because: nonzero mapcount
>
> Mapcount underflow, hm, I don't recall a similar report to this.
>
>> [13397.986517] Modules linked in: xfs libcrc32c exportfs firewire_ohci
>> kvm firewire_core k10temp crc_itu_t
>> [13397.986537] CPU: 2 PID: 664 Comm: kswapd0 Not tainted 3.19.0-gentoo-suc #1
>> [13397.986543] Hardware name: Gigabyte Technology Co., Ltd.
>> GA-MA785GT-UD3H/GA-MA785GT-UD3H, BIOS F8 05/25/2010
>> [13397.986547]  ffffffff81c27a04 ffff88013a603938 ffffffff819da02a
>> 0000000000000092
>> [13397.986555]  ffffea000412c180 ffff88013a603968 ffffffff819d640f
>> ffffea000412c1c0
>> [13397.986561]  ffffea000412c180 0000000000000000 ffffffff81c27a26
>> ffff88013a6039b8
>> [13397.986568] Call Trace:
>> [13397.986582]  [<ffffffff819da02a>] dump_stack+0x45/0x57
>> [13397.986592]  [<ffffffff819d640f>] bad_page+0xdb/0xf9
>> [13397.986600]  [<ffffffff8110d52f>] free_pages_prepare+0xff/0x160
>> [13397.986607]  [<ffffffff8110f670>] free_hot_cold_page+0x30/0x130
>> [13397.986614]  [<ffffffff8110f7bb>] free_hot_cold_page_list+0x4b/0xa0
>> [13397.986623]  [<ffffffff8111a547>] shrink_page_list+0x507/0xa90
>> [13397.986632]  [<ffffffff8111b04d>] shrink_inactive_list+0x18d/0x4f0
>> [13397.986640]  [<ffffffff8111bd25>] shrink_lruvec+0x5d5/0x7c0
>> [13397.986648]  [<ffffffff8111bfa7>] shrink_zone+0x97/0x240
>> [13397.986656]  [<ffffffff8111d0c9>] kswapd+0x509/0x9d0
>> [13397.986666]  [<ffffffff8111cbc0>] ? mem_cgroup_shrink_node_zone+0x140/0x140
>> [13397.986673]  [<ffffffff81065ee4>] kthread+0xc4/0xe0
>> [13397.986680]  [<ffffffff81065e20>] ? kthread_create_on_node+0x180/0x180
>> [13397.986688]  [<ffffffff819e382c>] ret_from_fork+0x7c/0xb0
>> [13397.986695]  [<ffffffff81065e20>] ? kthread_create_on_node+0x180/0x180
>> [13397.986700] Disabling lock debugging due to kernel taint
>> [17030.761818] BUG: Bad page state in process kswapd0  pfn:6cd0e
>> [17030.761831] page:ffffea0001b34380 count:0 mapcount:-1 mapping:
>>     (null) index:0x17265b3
>> [17030.761861] flags: 0x100000000000008(uptodate)
>> [17030.761881] page dumped because: nonzero mapcount
>> [17030.761884] Modules linked in: xfs libcrc32c exportfs firewire_ohci
>> kvm firewire_core k10temp crc_itu_t
>> [17030.761905] CPU: 3 PID: 664 Comm: kswapd0 Tainted: G    B
>> 3.19.0-gentoo-suc #1
>> [17030.761910] Hardware name: Gigabyte Technology Co., Ltd.
>> GA-MA785GT-UD3H/GA-MA785GT-UD3H, BIOS F8 05/25/2010
>> [17030.761915]  ffffffff81c27a04 ffff88013a603938 ffffffff819da02a
>> 0000000000000011
>> [17030.761922]  ffffea0001b34380 ffff88013a603968 ffffffff819d640f
>> ffffea0001b343c0
>> [17030.761929]  ffffea0001b34380 0000000000000000 ffffffff81c27a26
>> ffff88013a6039b8
>> [17030.761936] Call Trace:
>> [17030.761949]  [<ffffffff819da02a>] dump_stack+0x45/0x57
>> [17030.761979]  [<ffffffff819d640f>] bad_page+0xdb/0xf9
>> [17030.761987]  [<ffffffff8110d52f>] free_pages_prepare+0xff/0x160
>> [17030.761995]  [<ffffffff8110f670>] free_hot_cold_page+0x30/0x130
>> [17030.762001]  [<ffffffff8110f7bb>] free_hot_cold_page_list+0x4b/0xa0
>> [17030.762010]  [<ffffffff8111a547>] shrink_page_list+0x507/0xa90
>> [17030.762019]  [<ffffffff8111b04d>] shrink_inactive_list+0x18d/0x4f0
>> [17030.762028]  [<ffffffff8111bd25>] shrink_lruvec+0x5d5/0x7c0
>> [17030.762037]  [<ffffffff8111bfa7>] shrink_zone+0x97/0x240
>> [17030.762045]  [<ffffffff8111d0c9>] kswapd+0x509/0x9d0
>> [17030.762054]  [<ffffffff8111cbc0>] ? mem_cgroup_shrink_node_zone+0x140/0x140
>> [17030.762062]  [<ffffffff81065ee4>] kthread+0xc4/0xe0
>> [17030.762069]  [<ffffffff81065e20>] ? kthread_create_on_node+0x180/0x180
>> [17030.762077]  [<ffffffff819e382c>] ret_from_fork+0x7c/0xb0
>> [17030.762084]  [<ffffffff81065e20>] ? kthread_create_on_node+0x180/0x180
>> [19295.212650] BUG: Bad page state in process kswapd0  pfn:60a0e
>> [19295.212663] page:ffffea0001828380 count:0 mapcount:-1 mapping:
>>     (null) index:0x34a1449
>> [19295.212693] flags: 0x100000000000008(uptodate)
>> [19295.212713] page dumped because: nonzero mapcount
>> [19295.212717] Modules linked in: xfs libcrc32c exportfs firewire_ohci
>> kvm firewire_core k10temp crc_itu_t
>> [19295.212737] CPU: 1 PID: 664 Comm: kswapd0 Tainted: G    B
>> 3.19.0-gentoo-suc #1
>> [19295.212742] Hardware name: Gigabyte Technology Co., Ltd.
>> GA-MA785GT-UD3H/GA-MA785GT-UD3H, BIOS F8 05/25/2010
>> [19295.212747]  ffffffff81c27a04 ffff88013a603938 ffffffff819da02a
>> 00000000000000bb
>> [19295.212754]  ffffea0001828380 ffff88013a603968 ffffffff819d640f
>> ffffea00018283c0
>> [19295.212761]  ffffea0001828380 0000000000000000 ffffffff81c27a26
>> ffff88013a6039b8
>> [19295.212768] Call Trace:
>> [19295.212782]  [<ffffffff819da02a>] dump_stack+0x45/0x57
>> [19295.212793]  [<ffffffff819d640f>] bad_page+0xdb/0xf9
>> [19295.212801]  [<ffffffff8110d52f>] free_pages_prepare+0xff/0x160
>> [19295.212808]  [<ffffffff8110f670>] free_hot_cold_page+0x30/0x130
>> [19295.212815]  [<ffffffff8110f7bb>] free_hot_cold_page_list+0x4b/0xa0
>> [19295.212823]  [<ffffffff8111a547>] shrink_page_list+0x507/0xa90
>> [19295.212832]  [<ffffffff8111b04d>] shrink_inactive_list+0x18d/0x4f0
>> [19295.212841]  [<ffffffff8111bd25>] shrink_lruvec+0x5d5/0x7c0
>> [19295.212849]  [<ffffffff8111bfa7>] shrink_zone+0x97/0x240
>> [19295.212857]  [<ffffffff8111d0c9>] kswapd+0x509/0x9d0
>> [19295.212867]  [<ffffffff8111cbc0>] ? mem_cgroup_shrink_node_zone+0x140/0x140
>> [19295.212874]  [<ffffffff81065ee4>] kthread+0xc4/0xe0
>> [19295.212881]  [<ffffffff81065e20>] ? kthread_create_on_node+0x180/0x180
>> [19295.212889]  [<ffffffff819e382c>] ret_from_fork+0x7c/0xb0
>> [19295.212895]  [<ffffffff81065e20>] ? kthread_create_on_node+0x180/0x180
>> [25754.399681] BUG: Bad page state in process kswapd0  pfn:110e06
>> [25754.399694] page:ffffea0004438180 count:0 mapcount:-1 mapping:
>>     (null) index:0x52f5b87
>> [25754.399723] flags: 0x200000000000008(uptodate)
>> [25754.399742] page dumped because: nonzero mapcount
>> [25754.399746] Modules linked in: xfs libcrc32c exportfs firewire_ohci
>> kvm firewire_core k10temp crc_itu_t
>> [25754.399766] CPU: 0 PID: 664 Comm: kswapd0 Tainted: G    B
>> 3.19.0-gentoo-suc #1
>> [25754.399771] Hardware name: Gigabyte Technology Co., Ltd.
>> GA-MA785GT-UD3H/GA-MA785GT-UD3H, BIOS F8 05/25/2010
>> [25754.399776]  ffffffff81c27a04 ffff88013a603938 ffffffff819da02a
>> 0000000000000089
>> [25754.399783]  ffffea0004438180 ffff88013a603968 ffffffff819d640f
>> ffffea00044381c0
>> [25754.399790]  ffffea0004438180 0000000000000000 ffffffff81c27a26
>> ffff88013a6039b8
>> [25754.399796] Call Trace:
>> [25754.399811]  [<ffffffff819da02a>] dump_stack+0x45/0x57
>> [25754.399820]  [<ffffffff819d640f>] bad_page+0xdb/0xf9
>> [25754.399828]  [<ffffffff8110d52f>] free_pages_prepare+0xff/0x160
>> [25754.399835]  [<ffffffff8110f670>] free_hot_cold_page+0x30/0x130
>> [25754.399842]  [<ffffffff8110f7bb>] free_hot_cold_page_list+0x4b/0xa0
>> [25754.399850]  [<ffffffff8111a547>] shrink_page_list+0x507/0xa90
>> [25754.399859]  [<ffffffff8111b04d>] shrink_inactive_list+0x18d/0x4f0
>> [25754.399868]  [<ffffffff8111bd25>] shrink_lruvec+0x5d5/0x7c0
>> [25754.399876]  [<ffffffff8111bfa7>] shrink_zone+0x97/0x240
>> [25754.399884]  [<ffffffff8111d0c9>] kswapd+0x509/0x9d0
>> [25754.399894]  [<ffffffff8111cbc0>] ? mem_cgroup_shrink_node_zone+0x140/0x140
>> [25754.399901]  [<ffffffff81065ee4>] kthread+0xc4/0xe0
>> [25754.399908]  [<ffffffff81065e20>] ? kthread_create_on_node+0x180/0x180
>> [25754.399916]  [<ffffffff819e382c>] ret_from_fork+0x7c/0xb0
>> [25754.399922]  [<ffffffff81065e20>] ? kthread_create_on_node+0x180/0x180
>> [37925.847674] BUG: Bad page state in process kswapd0  pfn:2cd0e
>> [37925.847686] page:ffffea0000b34380 count:0 mapcount:-1 mapping:
>>     (null) index:0x8c1fd03
>> [37925.847716] flags: 0x100000000000008(uptodate)
>> [37925.847736] page dumped because: nonzero mapcount
>> [37925.847739] Modules linked in: xfs libcrc32c exportfs firewire_ohci
>> kvm firewire_core k10temp crc_itu_t
>> [37925.847759] CPU: 1 PID: 664 Comm: kswapd0 Tainted: G    B
>> 3.19.0-gentoo-suc #1
>> [37925.847765] Hardware name: Gigabyte Technology Co., Ltd.
>> GA-MA785GT-UD3H/GA-MA785GT-UD3H, BIOS F8 05/25/2010
>> [37925.847769]  ffffffff81c27a04 ffff88013a603938 ffffffff819da02a
>> 00000000000000a9
>> [37925.847776]  ffffea0000b34380 ffff88013a603968 ffffffff819d640f
>> ffffea0000b343c0
>> [37925.847783]  ffffea0000b34380 0000000000000000 ffffffff81c27a26
>> ffff88013a6039b8
>> [37925.847789] Call Trace:
>> [37925.847803]  [<ffffffff819da02a>] dump_stack+0x45/0x57
>> [37925.847813]  [<ffffffff819d640f>] bad_page+0xdb/0xf9
>> [37925.847821]  [<ffffffff8110d52f>] free_pages_prepare+0xff/0x160
>> [37925.847847]  [<ffffffff8110f670>] free_hot_cold_page+0x30/0x130
>> [37925.847854]  [<ffffffff8110f7bb>] free_hot_cold_page_list+0x4b/0xa0
>> [37925.847863]  [<ffffffff8111a547>] shrink_page_list+0x507/0xa90
>> [37925.847872]  [<ffffffff8111b04d>] shrink_inactive_list+0x18d/0x4f0
>> [37925.847880]  [<ffffffff8111bd25>] shrink_lruvec+0x5d5/0x7c0
>> [37925.847889]  [<ffffffff8111bfa7>] shrink_zone+0x97/0x240
>> [37925.847897]  [<ffffffff8111d0c9>] kswapd+0x509/0x9d0
>> [37925.847906]  [<ffffffff8111cbc0>] ? mem_cgroup_shrink_node_zone+0x140/0x140
>> [37925.847914]  [<ffffffff81065ee4>] kthread+0xc4/0xe0
>> [37925.847920]  [<ffffffff81065e20>] ? kthread_create_on_node+0x180/0x180
>> [37925.847929]  [<ffffffff819e382c>] ret_from_fork+0x7c/0xb0
>> [37925.847935]  [<ffffffff81065e20>] ? kthread_create_on_node+0x180/0x180
>> [60015.145582] pickup (26811) used greatest stack depth: 10776 bytes left
>> [65101.140582] BUG: Bad page state in process kswapd0  pfn:1ed06
>> [65101.140595] page:ffffea00007b4180 count:0 mapcount:-1 mapping:
>>     (null) index:0x18160edd
>> [65101.140624] flags: 0x100000000000008(uptodate)
>> [65101.140644] page dumped because: nonzero mapcount
>> [65101.140647] Modules linked in: xfs libcrc32c exportfs firewire_ohci
>> kvm firewire_core k10temp crc_itu_t
>> [65101.140668] CPU: 3 PID: 664 Comm: kswapd0 Tainted: G    B
>> 3.19.0-gentoo-suc #1
>> [65101.140673] Hardware name: Gigabyte Technology Co., Ltd.
>> GA-MA785GT-UD3H/GA-MA785GT-UD3H, BIOS F8 05/25/2010
>> [65101.140677]  ffffffff81c27a04 ffff88013a603938 ffffffff819da02a
>> 000000000000008b
>> [65101.140685]  ffffea00007b4180 ffff88013a603968 ffffffff819d640f
>> ffffea00007b41c0
>> [65101.140691]  ffffea00007b4180 0000000000000000 ffffffff81c27a26
>> ffff88013a6039b8
>> [65101.140697] Call Trace:
>> [65101.140712]  [<ffffffff819da02a>] dump_stack+0x45/0x57
>> [65101.140721]  [<ffffffff819d640f>] bad_page+0xdb/0xf9
>> [65101.140729]  [<ffffffff8110d52f>] free_pages_prepare+0xff/0x160
>> [65101.140737]  [<ffffffff8110f670>] free_hot_cold_page+0x30/0x130
>> [65101.140743]  [<ffffffff8110f7bb>] free_hot_cold_page_list+0x4b/0xa0
>> [65101.140752]  [<ffffffff8111a547>] shrink_page_list+0x507/0xa90
>> [65101.140761]  [<ffffffff8111b04d>] shrink_inactive_list+0x18d/0x4f0
>> [65101.140769]  [<ffffffff8111bd25>] shrink_lruvec+0x5d5/0x7c0
>> [65101.140778]  [<ffffffff8111bfa7>] shrink_zone+0x97/0x240
>> [65101.140786]  [<ffffffff8111d0c9>] kswapd+0x509/0x9d0
>> [65101.140796]  [<ffffffff8111cbc0>] ? mem_cgroup_shrink_node_zone+0x140/0x140
>> [65101.140803]  [<ffffffff81065ee4>] kthread+0xc4/0xe0
>> [65101.140810]  [<ffffffff81065e20>] ? kthread_create_on_node+0x180/0x180
>> [65101.140818]  [<ffffffff819e382c>] ret_from_fork+0x7c/0xb0
>> [65101.140825]  [<ffffffff81065e20>] ? kthread_create_on_node+0x180/0x180
>>
>> is there something i can do to diagnose it more?
>>
>> Thank you for your help.
>>
>> Pavol
>> --
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>

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