[Bug 208070] Kernel panic zfs_setextatt zpool version 28
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Wed Mar 16 19:06:31 UTC 2016
https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=208070
Bug ID: 208070
Summary: Kernel panic zfs_setextatt zpool version 28
Product: Base System
Version: 9.3-RELEASE
Hardware: amd64
OS: Any
Status: New
Severity: Affects Some People
Priority: ---
Component: kern
Assignee: freebsd-bugs at FreeBSD.org
Reporter: arthurramsey19 at gmail.com
CC: freebsd-amd64 at FreeBSD.org
CC: freebsd-amd64 at FreeBSD.org
Kernel panic occurs when a Windows client writes a file to a CIFS share on a
v28 zpool. The zpool was imported from a Nexenta (Illumos) box. I assume this
issue has something to do what how Nexenta (Illumos) does ACLs when compared to
FreeBSD. The issue is resolved by a zpool is upgrade.
Fatal trap 12: page fault while in kernel mode
cpuid = 0; apic id = 00
fault virtual address = 0x48
fault code = supervisor read data, page not present
instruction pointer = 0x20:0xffffffff81ac5970
stack pointer = 0x28:0xffffff824f2301c0
frame pointer = 0x28:0xffffff824f230250
code segment = base 0x0, limit 0xfffff, type 0x1b
= DPL 0, pres 1, long 1, def32 0, gran 1
processor eflags = interrupt enabled, resume, IOPL = 0
current process = 1223 (smbd)
trap number = 12
panic: page fault
cpuid = 0
KDB: stack backtrace:
#0 0xffffffff80925736 at kdb_backtrace+0x66
#1 0xffffffff808eb2fe at panic+0x1ce
#2 0xffffffff80cd28e0 at trap_fatal+0x290
#3 0xffffffff80cd2c41 at trap_pfault+0x211
#4 0xffffffff80cd3243 at trap+0x363
#5 0xffffffff80cbc433 at calltrap+0x8
#6 0xffffffff81ad137c at zfs_freebsd_create+0x6ec
#7 0xffffffff80dd5492 at VOP_CREATE_APV+0x72
#8 0xffffffff8099a01c at vn_open_cred+0x4bc
#9 0xffffffff81ad25d8 at zfs_setextattr+0x1b8
#10 0xffffffff80dd4288 at VOP_SETEXTATTR_APV+0x78
#11 0xffffffff8097ad23 at extattr_set_vp+0x193
#12 0xffffffff8097b082 at sys_extattr_set_file+0x162
#13 0xffffffff80cd208a at amd64_syscall+0x5ea
#14 0xffffffff80cbc717 at Xfast_syscall+0xf7
I have a core dump that's ~30MB, but I'm not sure how I will get to you.
# zfs list tank
NAME USED AVAIL REFER MOUNTPOINT
tank 251G 290G 44.5K /mnt/tank
# zpool status tank
pool: tank
state: ONLINE
status: The pool is formatted using a legacy on-disk format. The pool can
still be used, but some features are unavailable.
action: Upgrade the pool using 'zpool upgrade'. Once this is done, the
pool will no longer be accessible on software that does not support
feature
flags.
scan: scrub repaired 0 in 1h3m with 0 errors on Sun Mar 6 01:03:08 2016
config:
NAME STATE READ WRITE
CKSUM
tank ONLINE 0 0
0
mirror-0 ONLINE 0 0
0
gptid/5a0a0323-7921-6964-8e75-d40c5d01776a ONLINE 0 0
0
gptid/34ba81da-c021-5acf-da0a-b99b02b81b6d ONLINE 0 0
0
errors: No known data errors
# zpool get version
NAME PROPERTY VALUE SOURCE
freenas-boot version - default
tank version 28 local
# zfs get all tank/public
NAME PROPERTY VALUE SOURCE
tank/public type filesystem -
tank/public creation Thu Dec 11 11:26 2014 -
tank/public used 15.8G -
tank/public available 289G -
tank/public referenced 15.8G -
tank/public compressratio 1.06x -
tank/public mounted yes -
tank/public quota none default
tank/public reservation none default
tank/public recordsize 128K default
tank/public mountpoint /mnt/tank/public default
tank/public sharenfs off default
tank/public checksum on default
tank/public compression on inherited from tank
tank/public atime on default
tank/public devices on default
tank/public exec on default
tank/public setuid on default
tank/public readonly off default
tank/public jailed off default
tank/public snapdir hidden default
tank/public aclmode passthrough inherited from tank
tank/public aclinherit passthrough inherited from tank
tank/public canmount on default
tank/public xattr off temporary
tank/public copies 1 default
tank/public version 5 -
tank/public utf8only off -
tank/public normalization none -
tank/public casesensitivity mixed -
tank/public vscan off default
tank/public nbmand off default
tank/public sharesmb name=public local
tank/public refquota none default
tank/public refreservation none default
tank/public primarycache all default
tank/public secondarycache all default
tank/public usedbysnapshots 0 -
tank/public usedbydataset 15.8G -
tank/public usedbychildren 0 -
tank/public usedbyrefreservation 0 -
tank/public logbias latency default
tank/public dedup off default
tank/public mlslabel -
tank/public sync standard default
tank/public refcompressratio 1.06x -
tank/public written 15.8G -
tank/public logicalused 16.8G -
tank/public logicalreferenced 16.8G -
tank/public volmode default default
tank/public filesystem_limit none default
tank/public snapshot_limit none default
tank/public filesystem_count none default
tank/public snapshot_count none default
tank/public redundant_metadata all default
tank/public nms:dedup-dirty off local
# getfacl /mnt/tank/public
# file: /mnt/tank/public
# owner: root
# group: wheel
group:domain admins:rwxpDdaARWcCos:fd----:allow
everyone@:rwxp-daARWc--s:fd----:allow
# getfacl /mnt/tank/public/Scans
# file: /mnt/tank/public/Scans
# owner: 1002
# group: 10
group:domain admins:rwxpDdaARWcCos:fd----:allow
group:domain admins:rwxpDdaARWcCos:fd----:allow
everyone@:rwxp-daARWc--s:fd----:allow
# getfacl /mnt/tank/public/Scans/Thumbs.db
# file: /mnt/tank/public/Scans/Thumbs.db
# owner: nobody
# group: nobody
group:domain admins:rwxpDdaARWcCos:------:allow
group:domain admins:rwxpDdaARWcCos:------:allow
everyone@:rwxp-daARWc--s:------:allow
# lspci
00:00.0 Host bridge: Intel Corporation Xeon E5/Core i7 DMI2 (rev 07)
00:01.0 PCI bridge: Intel Corporation Xeon E5/Core i7 IIO PCI Express Root Port
1a (rev 07)
00:02.0 PCI bridge: Intel Corporation Xeon E5/Core i7 IIO PCI Express Root Port
2a (rev 07)
00:02.2 PCI bridge: Intel Corporation Xeon E5/Core i7 IIO PCI Express Root Port
2c (rev 07)
00:03.0 PCI bridge: Intel Corporation Xeon E5/Core i7 IIO PCI Express Root Port
3a in PCI Express Mode (rev 07)
00:03.2 PCI bridge: Intel Corporation Xeon E5/Core i7 IIO PCI Express Root Port
3c (rev 07)
00:04.0 System peripheral: Intel Corporation Xeon E5/Core i7 DMA Channel 0 (rev
07)
00:04.1 System peripheral: Intel Corporation Xeon E5/Core i7 DMA Channel 1 (rev
07)
00:04.2 System peripheral: Intel Corporation Xeon E5/Core i7 DMA Channel 2 (rev
07)
00:04.3 System peripheral: Intel Corporation Xeon E5/Core i7 DMA Channel 3 (rev
07)
00:04.4 System peripheral: Intel Corporation Xeon E5/Core i7 DMA Channel 4 (rev
07)
00:04.5 System peripheral: Intel Corporation Xeon E5/Core i7 DMA Channel 5 (rev
07)
00:04.6 System peripheral: Intel Corporation Xeon E5/Core i7 DMA Channel 6 (rev
07)
00:04.7 System peripheral: Intel Corporation Xeon E5/Core i7 DMA Channel 7 (rev
07)
00:05.0 System peripheral: Intel Corporation Xeon E5/Core i7 Address Map,
VTd_Misc, System Management (rev 07)
00:05.2 System peripheral: Intel Corporation Xeon E5/Core i7 Control Status and
Global Errors (rev 07)
00:05.4 PIC: Intel Corporation Xeon E5/Core i7 I/O APIC (rev 07)
00:11.0 PCI bridge: Intel Corporation C600/X79 series chipset PCI Express
Virtual Root Port (rev 06)
00:16.0 Communication controller: Intel Corporation C600/X79 series chipset MEI
Controller #1 (rev 05)
00:16.1 Communication controller: Intel Corporation C600/X79 series chipset MEI
Controller #2 (rev 05)
00:1a.0 USB controller: Intel Corporation C600/X79 series chipset USB2 Enhanced
Host Controller #2 (rev 06)
00:1d.0 USB controller: Intel Corporation C600/X79 series chipset USB2 Enhanced
Host Controller #1 (rev 06)
00:1e.0 PCI bridge: Intel Corporation 82801 PCI Bridge (rev a6)
00:1f.0 ISA bridge: Intel Corporation C600/X79 series chipset LPC Controller
(rev 06)
00:1f.2 SATA controller: Intel Corporation C600/X79 series chipset 6-Port SATA
AHCI Controller (rev 06)
00:1f.3 SMBus: Intel Corporation C600/X79 series chipset SMBus Host Controller
(rev 06)
00:1f.6 Signal processing controller: Intel Corporation C600/X79 series chipset
Thermal Management Controller (rev 06)
03:00.0 Serial Attached SCSI controller: LSI Logic / Symbios Logic SAS2308
PCI-Express Fusion-MPT SAS-2 (rev 05)
05:00.0 Ethernet controller: Intel Corporation I350 Gigabit Network Connection
(rev 01)
This is a 2U Supermicro with 16 GB of RAM.
There is also a workaround without upgrading zpool.
1. Set old dataset to readonly
zfs set readonly=on tank/public
2. Create new dataset via FreeNAS UI with compression: on, share type: Windows,
case sensitivity: sensitive, enable atime: on and dedupe: off.
3. Set ACLs
chown nobody:nobody /mnt/tank/new
setfacl -x 'owner@:rwxpD-a-R-c---:------:allow' /mnt/tank/new
setfacl -x 'group@:rwxpD-a-R-c---:------:allow' /mnt/tank/new
setfacl -m 'group:domain admins:rwxpDdaARWcCo-:fd----:allow' /mnt/tank/new
4. Setup CIFS share
5. Copied data from old read only dataset to new dataset using Windows CIFS
client
6. Corrected ACLs using Windows CIFS client and applied the ACL recursively
7. Rename old dataset
8. Rename new dataset to replace old dataset
I originally reported this to the FreeNAS forums. You can view the thread
here:
https://forums.freenas.org/index.php?threads/zfs-crash.41952/#post-270114. I
was able to reproduce the issue with FreeBSD 9.3, so I decided to report it
upstream to the FreeBSD project.
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