linux-kernel - [Btrfs] kernel BUG at fs/btrfs/inode.c:3123!

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Date:	Fri, 10 Oct 2014 10:27:33 +0800
From:	Fengguang Wu <fengguang.wu@...el.com>
To:	Josef Bacik <jbacik@...com>
Cc:	Chris Mason <clm@...com>, LKML <linux-kernel@...r.kernel.org>,
	lkp@...org,
	"linux-btrfs@...r.kernel.org" <linux-btrfs@...r.kernel.org>
Subject: [Btrfs] kernel BUG at fs/btrfs/inode.c:3123!

Hi Josef,

FYI, we noticed the below changes on

git://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git master
commit 47ab2a6c689913db23ccae38349714edf8365e0a ("Btrfs: remove empty block groups automatically")


testbox/testcase/testparams: lkp-st02/dd-write/5m-11HDD-RAID5-cfq-btrfs-10dd

8407f553268a4611  47ab2a6c689913db23ccae3834  
----------------  --------------------------  
       fail:runs  %reproduction    fail:runs
           |            |              |
           :1           80%           4:5     dmesg.kernel_BUG_at_fs/btrfs/inode.c
           :1           80%           4:5     dmesg.invalid_opcode
           :1           80%           4:5     dmesg.Kernel_panic-not_syncing:Fatal_exception
           :1           20%           1:5     last_state.booting
           :1           60%           3:5     last_state.is_incomplete_run
           :1           40%           2:5     last_state.running

kexecing...
kexec -l /tmp//kernel/x86_64-rhel/a308edf16c35a3667e85e8545a530812915a71bf/vmlinuz-3.17.0-ga308edf --initrd=/tmp/initrd-6217 --append="user=lkp job=/lkp/scheduled/lkp-st02/cyclic_dd-write-5m-11HDD-RAID5-cfq-btrfs-100dd-x86_64-rhel-HEAD-a308edf16c35a3667e85e8545a530812915a71bf-0.yaml ARCH=x86_64 BOOT_IMAGE=/kernel/x86_64-rhel/a308edf16c35a3667e85e8545a530812915a71bf/vmlinuz-3.17.0-ga308edf kconfig=x86_64-rhel commit=a308edf16c35a3667e85e8545a530812915a71bf branch=linux-devel/devel-hourly-2014100822 root=/dev/ram0 max_uptime=1500 RESULT_ROOT=/result/lkp-st02/dd-write/5m-11HDD-RAID5-cfq-btrfs-100dd/debian-x86_64.cgz/x86_64-rhel/a308edf16c35a3667e85e8545a530812915a71bf/0 ip=::::lkp-st02:eth1:dhcp earlyprintk=ttyS0,115200 debug apic=debug sysrq_always_enabled rcupdate.rcu_cpu_stall_timeout=100 panic=-1 softlockup_panic=1 nmi_watchdog=panic oops=panic load_ramdisk=2 prompt_ramdisk=0 console=ttyS0,115200 console=tty0 vga=normal rw"
[  373.673403] ------------[ cut here ]------------
[  373.674366] kernel BUG at fs/btrfs/inode.c:3123!
[  373.674366] invalid opcode: 0000 [#1] SMP 
[  373.674366] Modules linked in: btrfs raid456 async_raid6_recov async_memcpy async_pq async_xor xor async_tx raid6_pq ipmi_watchdog ipmi_msghandler ses enclosure sg sd_mod crc_t10dif crct10dif_generic crct10dif_common ata_generic pata_acpi snd_pcm snd_timer ata_piix parport_pc floppy snd i5400_edac parport soundcore libata i2c_i801 serio_raw mptsas pcspkr edac_core mptscsih tpm_infineon mptbase i5k_amb shpchp scsi_transport_sas
[  373.674366] CPU: 7 PID: 2172 Comm: btrfs-cleaner Not tainted 3.17.0-ga308edf #1
[  373.674366] Hardware name: Supermicro X7DW3/X7DWN, BIOS 6.00 09/28/2007
[  373.674366] task: ffff8800bd720000 ti: ffff8800bd728000 task.ti: ffff8800bd728000
[  373.674366] RIP: 0010:[<ffffffffa02257c0>]  [<ffffffffa02257c0>] btrfs_orphan_add+0x1c0/0x1e0 [btrfs]
[  373.674366] RSP: 0018:ffff8800bd72bca0  EFLAGS: 00010286
[  373.674366] RAX: 00000000ffffffe4 RBX: ffff88022da60800 RCX: ffff88022b8fe000
[  373.674366] RDX: 00000000000007d0 RSI: 0000000000040000 RDI: ffff88022b8fe138
[  373.674366] RBP: ffff8800bd72bcd0 R08: 000060fdd0002340 R09: ffff8801219343f0
[  373.674366] R10: ffffe8ffffdc2380 R11: ffffea0003004300 R12: ffff88010071ac98
[  373.674366] R13: ffff8800a7f90aa0 R14: ffff88022da60c58 R15: 0000000000000001
[  373.674366] FS:  0000000000000000(0000) GS:ffff88022fdc0000(0000) knlGS:0000000000000000
[  373.674366] CS:  0010 DS: 0000 ES: 0000 CR0: 000000008005003b
[  373.674366] CR2: 00007f6bad137148 CR3: 000000022ec3c000 CR4: 00000000000007e0
[  373.674366] Stack:
[  373.674366]  ffffffffa0263691 ffff88021ad60000 ffff8801219343f0 0000000000000001
[  373.674366]  ffff88010071ac98 ffff880094ca1600 ffff8800bd72bd48 ffffffffa020f796
[  373.674366]  ffff8801219343f0 ffff880121934470 ffff880000000004 ffff88022da60800
[  373.674366] Call Trace:
[  373.674366]  [<ffffffffa0263691>] ? lookup_free_space_inode+0x41/0xf0 [btrfs]
[  373.674366]  [<ffffffffa020f796>] btrfs_remove_block_group+0x136/0x510 [btrfs]
[  373.674366]  [<ffffffffa0248e9a>] btrfs_remove_chunk+0x66a/0x7f0 [btrfs]
[  373.674366]  [<ffffffffa020fd8e>] btrfs_delete_unused_bgs+0x21e/0x250 [btrfs]
[  373.674366]  [<ffffffffa0218344>] cleaner_kthread+0x164/0x1e0 [btrfs]
[  373.674366]  [<ffffffffa02181e0>] ? write_all_supers+0xb70/0xb70 [btrfs]
[  373.674366]  [<ffffffff8108d19b>] kthread+0xdb/0x100
[  373.674366]  [<ffffffff8108d0c0>] ? kthread_create_on_node+0x180/0x180
[  373.674366]  [<ffffffff818600fc>] ret_from_fork+0x7c/0xb0
[  373.674366]  [<ffffffff8108d0c0>] ? kthread_create_on_node+0x180/0x180
[  373.674366] Code: 60 04 00 00 e9 b0 fe ff ff 66 90 89 45 d0 f0 41 80 64 24 80 fd 4c 89 e7 e8 3e 2a fe ff 8b 45 d0 e9 1b ff ff ff 66 0f 1f 44 00 00 <0f> 0b b8 f4 ff ff ff e9 10 ff ff ff 4c 89 f7 45 31 f6 e8 99 a2 
[  373.674366] RIP  [<ffffffffa02257c0>] btrfs_orphan_add+0x1c0/0x1e0 [btrfs]
[  373.674366]  RSP <ffff8800bd72bca0>
[  373.952497] ---[ end trace c0d0f39b387c06ce ]---
[  373.957232] Kernel panic - not syncing: Fatal exception


Thanks,
Fengguang

View attachment ".dmesg" of type "text/plain" (114814 bytes)