Re: [NS] kernel BUG at drivers/md/bcache/btree.c:1168

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I sent off the pull request - after it hits mainline I'll make sure it
goes into 3.13.x

On Fri, Feb 7, 2014 at 12:44 PM, Jose Manuel dos Santos Calhariz
<jose.calhariz@xxxxxxxxxxxxxxxxxx> wrote:
> On 29-01-2014 00:54, Darrick J. Wong wrote:
>>
>> [adding Mr. Trinidade because he seems to have the same problem]
>>
>> I /think/ I have a patch to fix this bug -- the clamp on
>> SET_GC_SECTORS_USED in
>> the line before the BUG_ON seems partially ineffectual.  I'm about to send
>> everyone a patch; can you put that into a kernel and test it out?
>>
>> The "easiest" way I've found to reproduce this bug is to create a bcache,
>> mkfs.ext4 it, run fsstress on the ext4 FS until the cache is full, then
>> umount
>> and re-run mkfs.ext4, which discards the device before formatting.
>> Eventually
>> it'll BUG().
>
> It's to tell that your fix works for me. It's possible to push your fix into
> kernel 3.13.x?
>
>      Jose Calhariz
>
>>
>> --D
>>
>> On Fri, Jan 24, 2014 at 10:28:03PM -0800, Darrick J. Wong wrote:
>>>
>>> On Fri, Jan 17, 2014 at 12:34:17PM +0000, Jose Manuel dos Santos Calhariz
>>> wrote:
>>>>
>>>> Hi, is the second time I get this BUG.
>>>>
>>>> The first was during boot from an old 3.13.0-rc2 to a 3.13.0-rc7.
>>>> The second time was when running tests.
>>>
>>> Yeah, I also saw this tonight on 3.13.  Running on ext4 -> LVM -> LUKS ->
>>> bcache -> ssd/disk.
>>>
>>> [81881.815077] ------------[ cut here ]------------
>>> [81881.815108] kernel BUG at drivers/md/bcache/btree.c:1168!
>>> [81881.815123] invalid opcode: 0000 [#1] PREEMPT SMP
>>> [81881.815140] Modules linked in: hfsplus hfs msdos ipt_MASQUERADE
>>> iptable_nat nf_nat_ipv4 xt_conntrack xt_CHECKSUM iptable_mangle tun bridge
>>> stp llc fuse af_packet microcode bnep rfcomm nfsd nfs_acl exportfs
>>> auth_rpcgss nfs lockd sunrpc xt_physdev xt_hl uvcvideo ip6t_rt
>>> videobuf2_core videodev nf_conntrack_ipv6 nf_defrag_ipv6 videobuf2_vmalloc
>>> videobuf2_memops ipt_REJECT xt_sctp xt_limit xt_tcpudp xt_addrtype
>>> nf_conntrack_ipv4 nf_defrag_ipv4 xt_state ip6table_filter ip6_tables
>>> nf_conntrack_netbios_ns nf_conntrack_broadcast nf_nat_ftp nf_nat
>>> nf_conntrack_ftp nf_conntrack iptable_filter ip_tables x_tables eeprom
>>> sch_fq_codel nls_iso8859_1 nls_cp437 vfat fat lpc_ich mfd_core loop bcache
>>> zlib_deflate libcrc32c
>>> [81881.815346] CPU: 2 PID: 1418 Comm: bcache_gc Not tainted
>>> 3.13.0-60-birch #1
>>> [81881.815365] Hardware name: LENOVO 2349E51/2349E51, BIOS G1ET69WW (2.05
>>> ) 09/12/2012
>>> [81881.815385] task: ffff880402038000 ti: ffff8804043c6000 task.ti:
>>> ffff8804043c6000
>>> [81881.815405] RIP: 0010:[<ffffffffa0017a01>]  [<ffffffffa0017a01>]
>>> __bch_btree_mark_key+0x251/0x290 [bcache]
>>> [81881.815438] RSP: 0018:ffff8804043c7c78  EFLAGS: 00010246
>>> [81881.815453] RAX: 0000000000000002 RBX: ffffc90004397dac RCX:
>>> 0000000000000200
>>> [81881.815471] RDX: 0000000000000002 RSI: 0000000000000001 RDI:
>>> ffffc90004397dac
>>> [81881.815490] RBP: ffff8804043c7cc8 R08: 000007ffffffffff R09:
>>> 0000000000000001
>>> [81881.815509] R10: 0000000000003fff R11: 0000001000000000 R12:
>>> 0000000000000000
>>> [81881.815527] R13: ffff8800532002c0 R14: ffff8804017a0000 R15:
>>> 0000000000000000
>>> [81881.815546] FS:  0000000000000000(0000) GS:ffff88041e300000(0000)
>>> knlGS:0000000000000000
>>> [81881.815568] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
>>> [81881.815583] CR2: 00007f467f76b000 CR3: 0000000001c0c000 CR4:
>>> 00000000001407e0
>>> [81881.815602] Stack:
>>> [81881.815609]  ffff8804043c7ce8 ffff880408fb2000 ffff8804043c7c98
>>> ffffffffa0014be5
>>> [81881.815632]  ffff8804043c7cc8 ffff880408fb2000 ffff8804043c7de0
>>> ffff8800532002c0
>>> [81881.815653]  0000000000000000 000000000000001c ffff8804043c7d68
>>> ffffffffa0017e41
>>> [81881.815675] Call Trace:
>>> [81881.815690]  [<ffffffffa0014be5>] ? bch_ptr_invalid+0x25/0x30 [bcache]
>>> [81881.815713]  [<ffffffffa0017e41>] btree_gc_mark_node+0x81/0x210
>>> [bcache]
>>> [81881.815736]  [<ffffffffa001a2e2>] bch_btree_gc+0x252/0x5d0 [bcache]
>>> [81881.815759]  [<ffffffffa001a698>] bch_gc_thread+0x38/0x120 [bcache]
>>> [81881.815781]  [<ffffffffa001a660>] ? bch_btree_gc+0x5d0/0x5d0 [bcache]
>>> [81881.815801]  [<ffffffff810e4b79>] kthread+0xc9/0xe0
>>> [81881.815816]  [<ffffffff810e4ab0>] ? flush_kthread_worker+0xb0/0xb0
>>> [81881.815835]  [<ffffffff817f63ec>] ret_from_fork+0x7c/0xb0
>>> [81881.815851]  [<ffffffff810e4ab0>] ? flush_kthread_worker+0xb0/0xb0
>>> [81881.815868] Code: c8 44 89 55 b8 4c 89 5d b0 e8 5c 21 01 00 4c 8b 45
>>> c0 84 c0 44 8b 4d c8 44 8b 55 b8 4c 8b 5d b0 75 13 0f b7 43 0a e9 28 ff ff
>>> ff <0f> 0b 48 89 df e9 ec fe ff ff 4c 89 45 c0 44 89 4d c8 44 89 55
>>> [81881.815956] RIP  [<ffffffffa0017a01>] __bch_btree_mark_key+0x251/0x290
>>> [bcache]
>>> [81881.815982]  RSP <ffff8804043c7c78>
>>> [81881.820218] ---[ end trace f9ade3bfa4c277bf ]---
>>>
>>> --D
>>>>
>>>> Follow the two stack trace:
>>>>
>>>> Jan 14 17:33:59 xxxxx kernel: ------------[ cut here ]------------
>>>> Jan 14 17:33:59 xxxxx kernel: kernel BUG at
>>>> drivers/md/bcache/btree.c:1168!
>>>> Jan 14 17:33:59 xxxxx kernel: invalid opcode: 0000 [#1] SMP
>>>> Jan 14 17:33:59 xxxxx kernel: Modules linked in: lp parport_pc
>>>> parport joydev st sr_mod cdrom xt_multiport iptable_filter ip_tables
>>>> x_tables xfs libcrc32c ipmi_devintf loop snd_pcm mgag200
>>>> snd_page_alloc snd_timer ttm x86_pkg_temp_thermal drm_kms_helper drm
>>>> snd i2c_algo_bit coretemp soundcore kvm_intel kvm
>>>> +crc32c_intel ghash_clmulni_intel ioatdma aesni_intel aes_x86_64
>>>> iTCO_wdt sb_edac iTCO_vendor_support mei_me mei ablk_helper
>>>> edac_core cryptd psmouse i2c_i801 lpc_ich serio_raw i2c_core pcspkr
>>>> lrw mfd_core gf128mul ipmi_si ipmi_msghandler glue_helper evdev
>>>> processor wmi thermal_sys button ext3 mbcache jbd dm_mod
>>>> +raid1 md_mod hid_generic usbhid hid bcache sg sd_mod ses crc_t10dif
>>>> enclosure crct10dif_common microcode ahci libahci libata ehci_pci
>>>> ehci_hcd mpt2sas raid_class usbcore megaraid_sas scsi_transport_sas
>>>> usb_common scsi_mod ixgbe dca ptp pps_core mdio [last unloaded:
>>>> parport_pc]
>>>> Jan 14 17:33:59 xxxxx kernel: CPU: 6 PID: 700 Comm: bcache_gc Not
>>>> tainted 3.13.0-rc7-dsi #3
>>>> Jan 14 17:33:59 xxxxx kernel: Hardware name: Supermicro
>>>> X9SRH-7F/7TF/X9SRH-7F/7TF, BIOS 3.00 07/05/2013
>>>> Jan 14 17:33:59 xxxxx kernel: task: ffff88101371a050 ti:
>>>> ffff88100ea56000 task.ti: ffff88100ea56000
>>>> Jan 14 17:33:59 xxxxx kernel: RIP: 0010:[<ffffffffa01ce41e>]
>>>> [<ffffffffa01ce41e>] __bch_btree_mark_key+0x171/0x1a8 [bcache]
>>>> Jan 14 17:33:59 xxxxx kernel: RSP: 0018:ffff88100ea57cb8  EFLAGS:
>>>> 00010246
>>>> Jan 14 17:33:59 xxxxx kernel: RAX: 0000000000000002 RBX:
>>>> ffff880fab8001e8 RCX: 0000000000002000
>>>> Jan 14 17:33:59 xxxxx kernel: RDX: 0000000000000002 RSI:
>>>> ffff880fab8001e8 RDI: ffff881028d60000
>>>> Jan 14 17:33:59 xxxxx kernel: RBP: 0000000000000000 R08:
>>>> 0000000000000001 R09: ffff88101003c000
>>>> Jan 14 17:33:59 xxxxx kernel: R10: 0000000000001000 R11:
>>>> ffff880fce594400 R12: 0000000000000000
>>>> Jan 14 17:33:59 xxxxx kernel: R13: ffff881028d60000 R14:
>>>> 0000000000000001 R15: ffffc90016d93678
>>>> Jan 14 17:33:59 xxxxx kernel: FS:  0000000000000000(0000)
>>>> GS:ffff88107fcc0000(0000) knlGS:0000000000000000
>>>> Jan 14 17:33:59 xxxxx kernel: CS:  0010 DS: 0000 ES: 0000 CR0:
>>>> 0000000080050033
>>>> Jan 14 17:33:59 xxxxx kernel: CR2: 00007fe31614ccf8 CR3:
>>>> 000000000160c000 CR4: 00000000000407e0
>>>> Jan 14 17:33:59 xxxxx kernel: Stack:
>>>> Jan 14 17:33:59 xxxxx kernel: ffff880fab8001e8 0000000188a000fb
>>>> ffff880fce594400 ffff880fce594400
>>>> Jan 14 17:33:59 xxxxx kernel: ffff880fab8001e8 0000000000000013
>>>> 0000000000000001 ffff88100ea57dc8
>>>> Jan 14 17:33:59 xxxxx kernel: ffff88100ea57d18 ffffffffa01ce72a
>>>> ffff88101371a050 0000000200000000
>>>> Jan 14 17:33:59 xxxxx kernel: Call Trace:
>>>> Jan 14 17:33:59 xxxxx kernel: [<ffffffffa01ce72a>] ?
>>>> btree_gc_mark_node+0x4c/0x16d [bcache]
>>>> Jan 14 17:33:59 xxxxx kernel: [<ffffffff811e8e63>] ?
>>>> call_rwsem_down_write_failed+0x13/0x20
>>>> Jan 14 17:33:59 xxxxx kernel: [<ffffffffa01d005e>] ?
>>>> bch_btree_gc+0x187/0x3a7 [bcache]
>>>> Jan 14 17:33:59 xxxxx kernel: [<ffffffff8106ffde>] ?
>>>> idle_balance+0x12b/0x166
>>>> Jan 14 17:33:59 xxxxx kernel: [<ffffffff81066b18>] ? mmdrop+0xd/0x1c
>>>> Jan 14 17:33:59 xxxxx kernel: [<ffffffffa01d02ab>] ?
>>>> bch_gc_thread+0x2d/0xe5 [bcache]
>>>> Jan 14 17:33:59 xxxxx kernel: [<ffffffffa01d027e>] ?
>>>> bch_btree_gc+0x3a7/0x3a7 [bcache]
>>>> Jan 14 17:33:59 xxxxx kernel: [<ffffffffa01d027e>] ?
>>>> bch_btree_gc+0x3a7/0x3a7 [bcache]
>>>> Jan 14 17:33:59 xxxxx kernel: [<ffffffff8105f77a>] ? kthread+0x99/0xa1
>>>> Jan 14 17:33:59 xxxxx kernel: [<ffffffff8105f6e1>] ?
>>>> __kthread_parkme+0x59/0x59
>>>> Jan 14 17:33:59 xxxxx kernel: [<ffffffff813b58cc>] ?
>>>> ret_from_fork+0x7c/0xb0
>>>> Jan 14 17:33:59 xxxxx kernel: [<ffffffff8105f6e1>] ?
>>>> __kthread_parkme+0x59/0x59
>>>> Jan 14 17:33:59 xxxxx kernel: Code: 00 01 c1 b8 ff 3f 00 00 81 f9 ff
>>>> 3f 00 00 0f 46 c1 66 81 e2 03 80 25 ff 1f 00 00 c1 e0 02 09 d0 66 a9
>>>> fc 7f 66 41 89 47 0a 75 02 <0f> 0b ff c5 eb 05 31 ed 45 31 e4 48 8b
>>>> 03 89 ea 48 c1 e8 3c 83
>>>> Jan 14 17:33:59 xxxxx kernel: RIP  [<ffffffffa01ce41e>]
>>>> __bch_btree_mark_key+0x171/0x1a8 [bcache]
>>>> Jan 14 17:33:59 xxxxx kernel: RSP <ffff88100ea57cb8>
>>>> Jan 14 17:33:59 xxxxx kernel: ---[ end trace 6a29ce0fa7816b54 ]---
>>>>
>>>>
>>>> Jan 16 12:16:00 xxxxx kernel: ------------[ cut here ]------------
>>>> Jan 16 12:16:00 xxxxx kernel: kernel BUG at
>>>> drivers/md/bcache/btree.c:1168!
>>>> Jan 16 12:16:00 xxxxx kernel: invalid opcode: 0000 [#1] SMP
>>>> Jan 16 12:16:00 xxxxx kernel: Modules linked in: lp parport_pc
>>>> parport joydev st sr_mod cdrom xt_multiport iptable_filter ip_tables
>>>> x_tables xfs libcrc32c ipmi_devintf loop iTCO_wdt
>>>> x86_pkg_temp_thermal coretemp kvm_intel kvm sb_edac
>>>> iTCO_vendor_support mgag200 ioatdma snd_pcm snd_page_alloc snd_timer
>>>> snd i2c_i801
>>>> +ttm soundcore crc32c_intel ghash_clmulni_intel aesni_intel lpc_ich
>>>> aes_x86_64 drm_kms_helper drm i2c_algo_bit i2c_core mfd_core
>>>> ablk_helper cryptd lrw gf128mul mei_me mei glue_helper psmouse
>>>> edac_core serio_raw pcspkr evdev wmi ipmi_si ipmi_msghandler
>>>> processor thermal_sys button ext3 mbcache jbd dm_mod raid1
>>>> +md_mod hid_generic usbhid hid bcache sg sd_mod ses crc_t10dif
>>>> enclosure crct10dif_common microcode ehci_pci ehci_hcd usbcore ahci
>>>> mpt2sas libahci usb_common raid_class libata scsi_transport_sas
>>>> megaraid_sas ixgbe scsi_mod dca ptp pps_core mdio [last unloaded:
>>>> parport_pc]
>>>> Jan 16 12:16:00 xxxxx kernel: CPU: 8 PID: 707 Comm: bcache_gc Not
>>>> tainted 3.13.0-rc7-dsi #3
>>>> Jan 16 12:16:00 xxxxx kernel: Hardware name: Supermicro
>>>> X9SRH-7F/7TF/X9SRH-7F/7TF, BIOS 3.00 07/05/2013
>>>> Jan 16 12:16:00 xxxxx kernel: task: ffff88102c30f800 ti:
>>>> ffff88100e44c000 task.ti: ffff88100e44c000
>>>> Jan 16 12:16:00 xxxxx kernel: RIP: 0010:[<ffffffffa01f341e>]
>>>> [<ffffffffa01f341e>] __bch_btree_mark_key+0x171/0x1a8 [bcache]
>>>> Jan 16 12:16:00 xxxxx kernel: RSP: 0018:ffff88100e44da78  EFLAGS:
>>>> 00010246
>>>> Jan 16 12:16:00 xxxxx kernel: RAX: 0000000000000000 RBX:
>>>> ffff880fed4037b8 RCX: 0000000000002000
>>>> Jan 16 12:16:00 xxxxx kernel: RDX: 0000000000000000 RSI:
>>>> ffff880fed4037b8 RDI: ffff881028ce0000
>>>> Jan 16 12:16:00 xxxxx kernel: RBP: 0000000000000000 R08:
>>>> 0000000000000001 R09: ffff8810109ea000
>>>> Jan 16 12:16:00 xxxxx kernel: R10: 0000000000001000 R11:
>>>> ffff880fee906400 R12: 0000000000000000
>>>> Jan 16 12:16:00 xxxxx kernel: R13: ffff881028ce0000 R14:
>>>> 0000000000000000 R15: ffffc900168dc660
>>>> Jan 16 12:16:00 xxxxx kernel: FS:  0000000000000000(0000)
>>>> GS:ffff88107fd00000(0000) knlGS:0000000000000000
>>>> Jan 16 12:16:00 xxxxx kernel: CS:  0010 DS: 0000 ES: 0000 CR0:
>>>> 0000000080050033
>>>> Jan 16 12:16:00 xxxxx kernel: CR2: 0000000000619570 CR3:
>>>> 000000000160c000 CR4: 00000000000407e0
>>>> Jan 16 12:16:00 xxxxx kernel: Stack:
>>>> Jan 16 12:16:00 xxxxx kernel: ffff88100e44dad8 0000000108801efc
>>>> ffffffffa01f0c31 ffff880fee906400
>>>> Jan 16 12:16:00 xxxxx kernel: ffff880fed4037b8 0000000000000251
>>>> 0000000000000000 ffff88100e44ddc8
>>>> Jan 16 12:16:00 xxxxx kernel: ffff88100e44dad8 ffffffffa01f372a
>>>> ffffffffa01f5bb1 00000251b5f80000
>>>> Jan 16 12:16:00 xxxxx kernel: Call Trace:
>>>> Jan 16 12:16:00 xxxxx kernel: [<ffffffffa01f0c31>] ?
>>>> bch_cut_back+0x41/0x41 [bcache]
>>>> Jan 16 12:16:00 xxxxx kernel: [<ffffffffa01f372a>] ?
>>>> btree_gc_mark_node+0x4c/0x16d [bcache]
>>>> Jan 16 12:16:00 xxxxx kernel: [<ffffffffa01f5bb1>] ?
>>>> tree_to_bkey+0x13/0x3c [bcache]
>>>> Jan 16 12:16:00 xxxxx kernel: [<ffffffffa01f64b8>] ?
>>>> bch_ptr_invalid+0x1a/0x1a [bcache]
>>>> Jan 16 12:16:00 xxxxx kernel: [<ffffffffa01f4cbf>] ?
>>>> btree_gc_recurse+0x677/0x88f [bcache]
>>>> Jan 16 12:16:00 xxxxx kernel: [<ffffffffa01f6398>] ?
>>>> bch_btree_ptr_invalid+0x46/0xb0 [bcache]
>>>> Jan 16 12:16:00 xxxxx kernel: [<ffffffff813ae20a>] ?
>>>> __schedule+0x48f/0x555
>>>> Jan 16 12:16:00 xxxxx kernel: [<ffffffff810680ad>] ?
>>>> resched_task+0x15/0x4b
>>>> Jan 16 12:16:00 xxxxx kernel: [<ffffffffa01f7ab0>] ?
>>>> bch_btree_iter_next_filter+0x18/0x38 [bcache]
>>>> Jan 16 12:16:00 xxxxx kernel: [<ffffffffa01f379c>] ?
>>>> btree_gc_mark_node+0xbe/0x16d [bcache]
>>>> Jan 16 12:16:00 xxxxx kernel: [<ffffffff811e8e63>] ?
>>>> call_rwsem_down_write_failed+0x13/0x20
>>>> Jan 16 12:16:00 xxxxx kernel: [<ffffffffa01f50df>] ?
>>>> bch_btree_gc+0x208/0x3a7 [bcache]
>>>> Jan 16 12:16:00 xxxxx kernel: [<ffffffff8106ffde>] ?
>>>> idle_balance+0x12b/0x166
>>>> Jan 16 12:16:00 xxxxx kernel: [<ffffffff81066b18>] ? mmdrop+0xd/0x1c
>>>> Jan 16 12:16:00 xxxxx kernel: [<ffffffffa01f52ab>] ?
>>>> bch_gc_thread+0x2d/0xe5 [bcache]
>>>> Jan 16 12:16:00 xxxxx kernel: [<ffffffffa01f527e>] ?
>>>> bch_btree_gc+0x3a7/0x3a7 [bcache]
>>>> Jan 16 12:16:00 xxxxx kernel: [<ffffffffa01f527e>] ?
>>>> bch_btree_gc+0x3a7/0x3a7 [bcache]
>>>> Jan 16 12:16:00 xxxxx kernel: [<ffffffff8105f77a>] ? kthread+0x99/0xa1
>>>> Jan 16 12:16:00 xxxxx kernel: [<ffffffff8105f6e1>] ?
>>>> __kthread_parkme+0x59/0x59
>>>> Jan 16 12:16:00 xxxxx kernel: [<ffffffff813b58cc>] ?
>>>> ret_from_fork+0x7c/0xb0
>>>> Jan 16 12:16:00 xxxxx kernel: [<ffffffff8105f6e1>] ?
>>>> __kthread_parkme+0x59/0x59
>>>> Jan 16 12:16:00 xxxxx kernel: Code: 00 01 c1 b8 ff 3f 00 00 81 f9 ff
>>>> 3f 00 00 0f 46 c1 66 81 e2 03 80 25 ff 1f 00 00 c1 e0 02 09 d0 66 a9
>>>> fc 7f 66 41 89 47 0a 75 02 <0f> 0b ff c5 eb 05 31 ed 45 31 e4 48 8b
>>>> 03 89 ea 48 c1 e8 3c 83
>>>> Jan 16 12:16:00 xxxxx kernel: RIP  [<ffffffffa01f341e>]
>>>> __bch_btree_mark_key+0x171/0x1a8 [bcache]
>>>> Jan 16 12:16:00 xxxxx kernel: RSP <ffff88100e44da78>
>>>> Jan 16 12:16:00 xxxxx kernel: ---[ end trace 14e7f7c11d82ef2f ]---
>>>>
>>>>
>>>>
>>>>
>>>>
>>>> --
>>>> --
>>>> Um repórter de rock é um jornalista que não sabe escrever, entrevistando
>>>> gente
>>>> que não sabe falar, para pessoas que não sabem ler.
>>>>
>>>>
>>>> --
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>>
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>>
>
>
> --
> --
>
> Nenhum pássaro voa alto demais, se voa com suas próprias asas
>
> --William Blake
>
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