Hello,
Spotted on two different machines (one is a KVM guest) during xfs_dump
and some filesystem load.
I can reproduce it by doing
while : ; do xfsdump -f /dev/null -l0 -p1 -J -L "test" -M "test" /; done
simultaneously with some postmark benchmarks (any read/write load would
trigger it).
Bad kernels:
deb 3.2.4-1~bpo60+1 Debian/squeeze with backports
linus git tree - 164974a8f2a482f1abcb027c6d1a89dd79b14297 (post v3.3-rc5)
Good kernel:
2.6.32 (deb ver 2.6.32-41) Debian/squeeze (both amd64/i686)
linus git tree - v2.6.38
Backtrace (from kernel 164974a8f2a482f1abcb027c6d1a89dd79b14297):
Feb 29 17:01:37 goscie kernel: [ 265.409709] XFS: Assertion failed: bp->b_bn != XFS_BUF_DADDR_NULL, file: fs/xfs/xfs_buf.c, line: 598
Feb 29 17:01:37 goscie kernel: [ 265.410412] ------------[ cut here ]------------
Feb 29 17:01:37 goscie kernel: [ 265.410749] kernel BUG at fs/xfs/xfs_message.c:101!
Feb 29 17:01:37 goscie kernel: [ 265.411124] invalid opcode: 0000 [#1] SMP
Feb 29 17:01:37 goscie kernel: [ 265.411535] CPU 0
Feb 29 17:01:37 goscie kernel: [ 265.411625] Modules linked in: loop processor i2c_piix4 button i2c_core psmouse serio_raw tpm_tis tpm tpm_bios evdev pcspkr thermal_sys xfs sg ata_generic ata_piix libata scsi_mod virtio_net [last unloaded: scsi_wait_scan]
Feb 29 17:01:37 goscie kernel: [ 265.412034]
Feb 29 17:01:37 goscie kernel: [ 265.412034] Pid: 1465, comm: xfsdump Not tainted 3.3.0-rc5xfsdump1+ #1 Bochs Bochs
Feb 29 17:01:37 goscie kernel: [ 265.412034] RIP: 0010:[<ffffffffa00913aa>] [<ffffffffa00913aa>] assfail+0x1d/0x23 [xfs]
Feb 29 17:01:37 goscie kernel: [ 265.412034] RSP: 0018:ffff880009ee5938 EFLAGS: 00010296
Feb 29 17:01:37 goscie kernel: [ 265.412034] RAX: 000000000000006e RBX: ffff8800063ec980 RCX: 00000000099b099b
Feb 29 17:01:37 goscie kernel: [ 265.412034] RDX: 0000000000000000 RSI: 0000000000000046 RDI: 0000000000000246
Feb 29 17:01:37 goscie kernel: [ 265.412034] RBP: 0000000000028001 R08: 0000000000000000 R09: ffff88001780d000
Feb 29 17:01:37 goscie kernel: [ 265.412034] R10: 0000000000000000 R11: ffff88001780d000 R12: 0000000000000000
Feb 29 17:01:37 goscie kernel: [ 265.412034] R13: ffffffffa00dff34 R14: ffff880009ee5a10 R15: ffff88001202b980
Feb 29 17:01:37 goscie kernel: [ 265.412034] FS: 0000000000000000(0000) GS:ffff880017c00000(0063) knlGS:00000000f7639700
Feb 29 17:01:37 goscie kernel: [ 265.412034] CS: 0010 DS: 002b ES: 002b CR0: 000000008005003b
Feb 29 17:01:37 goscie kernel: [ 265.412034] CR2: 00000000f73a5000 CR3: 0000000014724000 CR4: 00000000000006f0
Feb 29 17:01:37 goscie kernel: [ 265.412034] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
Feb 29 17:01:37 goscie kernel: [ 265.412034] DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000400
Feb 29 17:01:37 goscie kernel: [ 265.412034] Process xfsdump (pid: 1465, threadinfo ffff880009ee4000, task ffff88000329f120)
Feb 29 17:01:37 goscie kernel: [ 265.412034] Stack:
Feb 29 17:01:37 goscie kernel: [ 265.412034] 0000000000028001 ffffffffa0085a82 0000000000008000 ffff8800063ec980
Feb 29 17:01:37 goscie kernel: [ 265.412034] 0000000000028001 ffffffffa00860d6 0000025c00000000 0000000000000000
Feb 29 17:01:37 goscie kernel: [ 265.412034] ffff880012084800 0000000000000000 0000000000008000 ffffffffa00dff34
Feb 29 17:01:37 goscie kernel: [ 265.412034] Call Trace:
Feb 29 17:01:37 goscie kernel: [ 265.412034] [<ffffffffa0085a82>] ? _xfs_buf_read+0x4b/0x86 [xfs]
Feb 29 17:01:37 goscie kernel: [ 265.412034] [<ffffffffa00860d6>] ? xfs_buf_read+0x8a/0xc0 [xfs]
Feb 29 17:01:37 goscie kernel: [ 265.412034] [<ffffffffa00dff34>] ? xfs_trans_read_buf+0x4b/0x537 [xfs]
Feb 29 17:01:37 goscie kernel: [ 265.412034] [<ffffffffa00cab65>] ? xfs_imap_to_bp+0x47/0x209 [xfs]
Feb 29 17:01:37 goscie kernel: [ 265.412034] [<ffffffffa00ccdf3>] ? xfs_iread+0x59/0x194 [xfs]
Feb 29 17:01:37 goscie kernel: [ 265.412034] [<ffffffffa008ba2a>] ? xfs_iget+0x408/0x5ea [xfs]
Feb 29 17:01:37 goscie kernel: [ 265.412034] [<ffffffffa0099015>] ? kmem_zone_zalloc+0x13/0x2e [xfs]
Feb 29 17:01:37 goscie kernel: [ 265.412034] [<ffffffffa0090c2b>] ? xfs_bulkstat_one_int+0x9a/0x319 [xfs]
Feb 29 17:01:37 goscie kernel: [ 265.412034] [<ffffffffa00eafec>] ? xfs_bstime_store_compat+0x4d/0x4d [xfs]
Feb 29 17:01:37 goscie kernel: [ 265.412034] [<ffffffffa00eb790>] ? xfs_bulkstat_one_compat+0x17/0x1c [xfs]
Feb 29 17:01:37 goscie kernel: [ 265.412034] [<ffffffffa00909e0>] ? xfs_bulkstat+0x58c/0x73d [xfs]
Feb 29 17:01:37 goscie kernel: [ 265.412034] [<ffffffffa00eb779>] ? xfs_compat_fssetdm_by_handle+0xc7/0xc7 [xfs]
Feb 29 17:01:37 goscie kernel: [ 265.412034] [<ffffffffa00ebc99>] ? xfs_compat_ioc_bulkstat+0x162/0x1cf [xfs]
Feb 29 17:01:37 goscie kernel: [ 265.412034] [<ffffffffa00ec0b2>] ? xfs_file_compat_ioctl+0x3ac/0x486 [xfs]
Feb 29 17:01:37 goscie kernel: [ 265.412034] [<ffffffffa00a7981>] ? xfs_bmapi_read+0x1ad/0x31a [xfs]
Feb 29 17:01:37 goscie kernel: [ 265.412034] [<ffffffffa0088d5f>] ? xfs_file_aio_read+0x24c/0x263 [xfs]
Feb 29 17:01:37 goscie kernel: [ 265.412034] [<ffffffffa008b323>] ? xfs_iunlock+0xea/0x146 [xfs]
Feb 29 17:01:37 goscie kernel: [ 265.412034] [<ffffffffa009600b>] ? xfs_free_eofblocks+0xa5/0x217 [xfs]
Feb 29 17:01:37 goscie kernel: [ 265.412034] [<ffffffff81142259>] ? compat_sys_ioctl+0x1a5/0xe28
Feb 29 17:01:37 goscie kernel: [ 265.412034] [<ffffffff81071d1e>] ? timekeeping_get_ns+0xd/0x2a
Feb 29 17:01:37 goscie kernel: [ 265.412034] [<ffffffff81072986>] ? getnstimeofday+0x4d/0x80
Feb 29 17:01:37 goscie kernel: [ 265.412034] [<ffffffff81072a06>] ? do_gettimeofday+0x10/0x2f
Feb 29 17:01:37 goscie kernel: [ 265.412034] [<ffffffff813615b6>] ? cstar_dispatch+0x7/0x21
Feb 29 17:01:37 goscie kernel: [ 265.412034] Code: 89 64 24 28 e8 86 fc ff ff 48 83 c4 68 c3 48 89 f1 41 89 d0 48 83 ec 08 48 89 fa 48 c7 c6 8d 7e 0f a0 31 ff 31 c0 e8 8d ff ff ff <0f> 0b eb fe 90 90 45 31 c0 31 c0 48 83 7f 38 00 75 67 e9 bd 00
Feb 29 17:01:37 goscie kernel: [ 265.412034] RIP [<ffffffffa00913aa>] assfail+0x1d/0x23 [xfs]
Feb 29 17:01:37 goscie kernel: [ 265.412034] RSP <ffff880009ee5938>
Feb 29 17:01:37 goscie kernel: [ 265.445134] ---[ end trace 1e67152b46e37c22 ]---
I'm trying to bisect but it would take a while.
root@goscie:~# xfs_info /
meta-data=/dev/disk/by-uuid/07910403-cd4b-4388-bab2-df7372aa7227 isize=256 agcount=9, agsize=114816 blks
= sectsz=512 attr=2
data = bsize=4096 blocks=983552, imaxpct=25
= sunit=0 swidth=0 blks
naming =version 2 bsize=4096 ascii-ci=0
log =internal bsize=4096 blocks=2560, version=2
= sectsz=512 sunit=0 blks, lazy-count=1
realtime =none extsz=4096 blocks=0, rtextents=0
root@goscie:~# grep xfs /proc/mounts
/dev/disk/by-uuid/07910403-cd4b-4388-bab2-df7372aa7227 / xfs rw,noatime,attr2,noquota 0 0
Regards,
Kupson
PS: Please do CC: me. I'm not subscribed.
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