[Bugme-new] [Bug 12563] New: oops while running fstress on compressed file system

bugme-daemon at bugzilla.kernel.org bugme-daemon at bugzilla.kernel.org
Wed Jan 28 10:51:38 PST 2009 

http://bugzilla.kernel.org/show_bug.cgi?id=12563

           Summary: oops while running fstress on compressed file system
           Product: File System
           Version: 2.5
     KernelVersion: 2.6.29-rc2
          Platform: All
        OS/Version: Linux
              Tree: Mainline
            Status: NEW
          Severity: normal
          Priority: P1
         Component: btrfs
        AssignedTo: fs_btrfs at kernel-bugs.osdl.org
        ReportedBy: eric.whitney at hp.com


Latest working kernel version: Has never fully passed test
Earliest failing kernel version: Prior to mainline merge

Distribution: uname -a:
Linux bl465cb.lnx.usa.hp.com 2.6.29-rc2-enw #1 SMP Sat Jan 17 14:19:15 EST 2009
x86_64 GNU/Linux

Hardware Environment:

dual socket, quad core x86_64 Intel and AMD systems with backplane RAID

representative btrfs-show:
Label: none  uuid: 2bdf12bf-8b27-49fd-970b-b2c1196e9f5d
        Total devices 6 FS bytes used 31.90MB
        devid    5 size 68.33GB used 1.01GB path /dev/cciss/c1d4
        devid    1 size 68.33GB used 1.02GB path /dev/cciss/c1d0
        devid    6 size 68.33GB used 1.01GB path /dev/cciss/c1d5
        devid    3 size 68.33GB used 2.00GB path /dev/cciss/c1d2
        devid    4 size 68.33GB used 2.00GB path /dev/cciss/c1d3
        devid    2 size 68.33GB used 1.00GB path /dev/cciss/c1d1


Software Environment: autotest client modified to run fstress against btrfs

fs mounted as: /dev/cciss/c1d5 on /mnt type btrfs (rw,compress)

Problem Description:  fstress will force a characteristic oops within minutes
or seconds when run against a compressed btrfs file system.  The oops will
occur on either a single or multi-device fs with high reliability.

This is the same bug Chris and I were looking at in late December.

(This bug also reproduces reliably using btrfs-unstable as of 28 Jan 09;
commit a717531942f488209dded30f6bc648167bcefa72)

oops from 2.6.29-rc2: (I/O errors at mount time not believed to be a factor,
and not visible in latest btrfs-unstable test)

Jan 21 17:34:51 bl465cb kernel: [   83.424862] device fsid
fd49278bbf12df2b-5d9f6e19c1b20b97 <6>devid 1 transid 5 /dev/cciss/c1d0
Jan 21 17:34:51 bl465cb kernel: [   83.428681] device fsid
fd49278bbf12df2b-5d9f6e19c1b20b97 <6>devid 2 transid 5 /dev/cciss/c1d1
Jan 21 17:34:51 bl465cb kernel: [   83.432291] device fsid
fd49278bbf12df2b-5d9f6e19c1b20b97 <6>devid 3 transid 5 /dev/cciss/c1d2
Jan 21 17:34:51 bl465cb kernel: [   83.435876] device fsid
fd49278bbf12df2b-5d9f6e19c1b20b97 <6>devid 4 transid 5 /dev/cciss/c1d3
Jan 21 17:34:51 bl465cb kernel: [   83.439453] device fsid
fd49278bbf12df2b-5d9f6e19c1b20b97 <6>devid 5 transid 5 /dev/cciss/c1d4
Jan 21 17:34:51 bl465cb kernel: [   83.443111] device fsid
fd49278bbf12df2b-5d9f6e19c1b20b97 <6>devid 6 transid 5 /dev/cciss/c1d5
Jan 21 17:35:04 bl465cb kernel: [   96.456646] device fsid
fd49278bbf12df2b-5d9f6e19c1b20b97 <6>devid 6 transid 9 /dev/cciss/c1d5
Jan 21 17:35:04 bl465cb kernel: [   96.480410] btrfs: use compression
Jan 21 17:36:13 bl465cb kernel: [  165.720340] end_request: I/O error, dev
cciss/c1d5, sector 131072
Jan 21 17:36:13 bl465cb kernel: [  165.727463] btrfs: disabling barriers on dev
/dev/cciss/c1d5
Jan 21 17:36:13 bl465cb kernel: [  165.729823] end_request: I/O error, dev
cciss/c1d4, sector 131072
Jan 21 17:36:13 bl465cb kernel: [  165.732255] btrfs: disabling barriers on dev
/dev/cciss/c1d4
Jan 21 17:36:13 bl465cb kernel: [  165.735461] end_request: I/O error, dev
cciss/c1d3, sector 131072
Jan 21 17:36:13 bl465cb kernel: [  165.738159] btrfs: disabling barriers on dev
/dev/cciss/c1d3
Jan 21 17:36:13 bl465cb kernel: [  165.740376] end_request: I/O error, dev
cciss/c1d2, sector 131072
Jan 21 17:36:13 bl465cb kernel: [  165.742764] btrfs: disabling barriers on dev
/dev/cciss/c1d2
Jan 21 17:36:13 bl465cb kernel: [  165.745014] end_request: I/O error, dev
cciss/c1d1, sector 131072
Jan 21 17:36:13 bl465cb kernel: [  165.747855] btrfs: disabling barriers on dev
/dev/cciss/c1d1
Jan 21 17:36:13 bl465cb kernel: [  165.751349] end_request: I/O error, dev
cciss/c1d0, sector 131072
Jan 21 17:36:13 bl465cb kernel: [  165.756045] btrfs: disabling barriers on dev
/dev/cciss/c1d0
Jan 21 18:41:20 bl465cb kernel: [ 4072.370454] stack segment: 0000 [#1] SMP 
Jan 21 18:41:20 bl465cb kernel: [ 4072.374009] last sysfs file:
/sys/devices/pci0000:40/0000:40:12.0/0000:52:00.0/class
Jan 21 18:41:20 bl465cb kernel: [ 4072.377145] CPU 1 
Jan 21 18:41:20 bl465cb kernel: [ 4072.377145] Modules linked in:
iptable_filter ip_tables x_tables parport_pc lp parport loop ipmi_devintf
ipmi_si ipmi_msghandler pcspkr psmouse i2c_piix4 serio_raw shpchp pci_hotplug
i2c_core container button ipv6 evdev usbhid ext3 hid jbd mbcache cciss scsi_mod
bnx2 ehci_hcd ohci_hcd uhci_hcd usbcore thermal processor fan thermal_sys fuse
Jan 21 18:41:20 bl465cb kernel: [ 4072.377145] Pid: 5207, comm: btrfs-delalloc-
Not tainted 2.6.29-rc2-enw #1
Jan 21 18:41:20 bl465cb kernel: [ 4072.377145] RIP: 0010:[<ffffffff803c8f83>] 
[<ffffffff803c8f83>] fill_window+0x143/0x480
Jan 21 18:41:20 bl465cb kernel: [ 4072.377145] RSP: 0018:ffff880425013c80 
EFLAGS: 00010212
Jan 21 18:41:20 bl465cb kernel: [ 4072.377145] RAX: 0000000000001000 RBX:
0000000000001000 RCX: b6e3880000000000
Jan 21 18:41:20 bl465cb kernel: [ 4072.377145] RDX: 0000000000000001 RSI:
0000000000001000 RDI: 0000000000000000
Jan 21 18:41:20 bl465cb kernel: [ 4072.377145] RBP: b6e3880000000000 R08:
0000000000000000 R09: 0000000000000000
Jan 21 18:41:20 bl465cb kernel: [ 4072.377145] R10: 0000000000000010 R11:
ffffc200139774bc R12: 0000000000000003
Jan 21 18:41:20 bl465cb kernel: [ 4072.377145] R13: 0000000000000001 R14:
0000000000000003 R15: 000000000000d0fb
Jan 21 18:41:20 bl465cb kernel: [ 4072.377145] FS:  00007f85a58506e0(0000)
GS:ffff88042eccfb00(0000) knlGS:0000000000000000
Jan 21 18:41:20 bl465cb kernel: [ 4072.377145] CS:  0010 DS: 0018 ES: 0018 CR0:
000000008005003b
Jan 21 18:41:20 bl465cb kernel: [ 4072.377145] CR2: 00007f85a52f95f0 CR3:
00000004299c5000 CR4: 00000000000006e0
Jan 21 18:41:20 bl465cb kernel: [ 4072.377145] DR0: 0000000000000000 DR1:
0000000000000000 DR2: 0000000000000000
Jan 21 18:41:20 bl465cb kernel: [ 4072.377145] DR3: 0000000000000000 DR6:
00000000ffff0ff0 DR7: 0000000000000400
Jan 21 18:41:20 bl465cb kernel: [ 4072.377145] Process btrfs-delalloc- (pid:
5207, threadinfo ffff880425012000, task ffff88042d828610)
Jan 21 18:41:20 bl465cb kernel: [ 4072.377145] Stack:
Jan 21 18:41:20 bl465cb kernel: [ 4072.377145]  0000000200000282
0000000000008000 b6e3880000000000 0000000000000015
Jan 21 18:41:20 bl465cb kernel: [ 4072.377145]  ffffc20013977afc
ffffc20013977000 ffff88022e427e60 00008000803ca89c
Jan 21 18:41:20 bl465cb kernel: [ 4072.377145]  000000000000cc08
ffffffff80539700 0000000000000011 ffffc200139779b0
Jan 21 18:41:20 bl465cb kernel: [ 4072.377145] Call Trace:
Jan 21 18:41:20 bl465cb kernel: [ 4072.377145]  [<ffffffff803c99ae>] ?
deflate_fast+0x24e/0x2e0
Jan 21 18:41:20 bl465cb kernel: [ 4072.377145]  [<ffffffff803c9ce2>] ?
zlib_deflate+0x112/0x330
Jan 21 18:41:20 bl465cb kernel: [ 4072.377145]  [<ffffffff803719d8>] ?
btrfs_zlib_compress_pages+0x158/0x3b0
Jan 21 18:41:20 bl465cb kernel: [ 4072.377145]  [<ffffffff8034e820>] ?
compress_file_range+0x3f0/0x4f0
Jan 21 18:41:20 bl465cb kernel: [ 4072.377145]  [<ffffffff8050aa5c>] ?
thread_return+0x38/0x6fc
Jan 21 18:41:20 bl465cb kernel: [ 4072.377145]  [<ffffffff8034e94e>] ?
async_cow_start+0x2e/0x50
Jan 21 18:41:20 bl465cb kernel: [ 4072.377145]  [<ffffffff80368401>] ?
worker_loop+0x61/0x160
Jan 21 18:41:20 bl465cb kernel: [ 4072.377145]  [<ffffffff803683a0>] ?
worker_loop+0x0/0x160
Jan 21 18:41:20 bl465cb kernel: [ 4072.377145]  [<ffffffff802525ab>] ?
kthread+0x4b/0x80
Jan 21 18:41:20 bl465cb kernel: [ 4072.484395]  [<ffffffff8020d23a>] ?
child_rip+0xa/0x20
Jan 21 18:41:20 bl465cb kernel: [ 4072.484395]  [<ffffffff80252560>] ?
kthread+0x0/0x80
Jan 21 18:41:20 bl465cb kernel: [ 4072.484395]  [<ffffffff8020d230>] ?
child_rip+0x0/0x20
Jan 21 18:41:20 bl465cb kernel: [ 4072.484395] Code: 8b 5c 24 78 89 5c 24 7c 81
7c 24 7c b0 15 00 00 b8 b0 15 00 00 0f 46 44 24 7c 29 44 24 7c 83 f8 0f 89 44
24 74 0f 8e ec 00 00 00 <0f> b6 45 00 0f b6 55 01 49 8d 04 07 48 8d 14 10 48 03
44 24 40 
Jan 21 18:41:20 bl465cb kernel: [ 4072.494396] RIP  [<ffffffff803c8f83>]
fill_window+0x143/0x480
Jan 21 18:41:20 bl465cb kernel: [ 4072.504469]  RSP <ffff880425013c80>
Jan 21 18:41:20 bl465cb kernel: [ 4072.507517] ---[ end trace 7c7026a226679987
]---
Jan 21 18:41:20 bl465cb kernel: [ 4072.512052] note: btrfs-delalloc-[5207]
exited with preempt_count 1


Steps to reproduce:
1) mkfs
2) mount compressed
3) run fstress


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