bin/130105: [zfs] send -R dumpes core

[Goran Lowkrantz]

>Number:         130105
>Category:       bin
>Synopsis:       [zfs] send -R dumpes core
>Confidential:   no
>Severity:       serious
>Priority:       low
>Responsible:    freebsd-bugs
>State:          open
>Quarter:        
>Keywords:       
>Date-Required:
>Class:          sw-bug
>Submitter-Id:   current-users
>Arrival-Date:   Fri Jan 02 02:40:01 UTC 2009
>Closed-Date:
>Last-Modified:
>Originator:     Goran Lowkrantz
>Release:        8.0-CURRENT
>Organization:
isMobile AB
>Environment:
FreeBSD skade.glz.hidden-powers.com 8.0-CURRENT FreeBSD 8.0-CURRENT #7: Thu Jan  1 22:41:14 CET 2009     root at skade.glz.hidden-powers.com:/usr/obj/usr/src/sys/STD  amd64

>Description:
Trying to backup a pool using zfs send -R failes with Segmentation fault (core dumped).

# zfs list
NAME                     USED  AVAIL  REFER  MOUNTPOINT
system                  37.3G  36.0G    18K  none
system/boot             39.6M  36.0G  21.5M  legacy
system/dbbackup          150M  36.0G    19K  /var/db/backup
system/dbbackup/pgsql    150M  36.0G   105M  /var/db/backup/pgsql
system/swap               16K  42.0G    16K  -
system/usr              23.8G  36.0G  1007M  /usr
system/usr/local        14.4G  36.0G  11.4G  /usr/local
system/usr/local/jails  2.72G  36.0G  2.31G  /usr/local/jails
system/usr/local/pgsql   188M  36.0G   149M  /usr/local/pgsql
system/usr/obj          2.47G  36.0G  2.47G  /usr/obj
system/usr/ports         245M  36.0G   245M  /usr/ports
system/usr/src           507M  36.0G   507M  /usr/src
system/usr/tmp          1.11G  8.89G  1.11G  /usr/tmp
system/var              7.32G  36.0G  3.28G  /var
system/var/log          2.36M  4.00G  1.60M  /var/log
system/var/tmp          29.8M  3.97G  29.8M  /var/tmp
# 
# zfs snapshot -r system at test
# zfs list -t snapshot | grep test
system at test                                              0      -    18K  -
system/boot at test                                         0      -  21.5M  -
system/dbbackup at test                                     0      -    19K  -
system/dbbackup/pgsql at test                             33K      -   105M  -
system/swap at test                                         0      -    16K  -
system/usr at test                                       148K      -  1007M  -
system/usr/local at test                                  88K      -  11.4G  -
system/usr/local/jails at test                           631K      -  2.31G  -
system/usr/local/pgsql at test                           270K      -   149M  -
system/usr/obj at test                                      0      -  2.47G  -
system/usr/ports at test                                    0      -   245M  -
system/usr/src at test                                      0      -   507M  -
system/usr/tmp at test                                      0      -  1.11G  -
system/var at test                                      3.60M      -  3.28G  -
system/var/log at test                                   266K      -  1.60M  -
system/var/tmp at test                                      0      -  29.8M  -
# zfs send -R system at test >/dev/null
Segmentation fault (core dumped)
# gdb -c /var/cores/0/zfs-6686 /sbin/zfs
GNU gdb 6.1.1 [FreeBSD]
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GDB is free software, covered by the GNU General Public License, and you are
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This GDB was configured as "amd64-marcel-freebsd"...(no debugging symbols found)...
Core was generated by `zfs'.
Program terminated with signal 11, Segmentation fault.
Reading symbols from /lib/libzfs.so.1...(no debugging symbols found)...done.
Loaded symbols for /lib/libzfs.so.1
Reading symbols from /lib/libgeom.so.4...(no debugging symbols found)...done.
Loaded symbols for /lib/libgeom.so.4
Reading symbols from /lib/libbsdxml.so.3...(no debugging symbols found)...done.
Loaded symbols for /lib/libbsdxml.so.3
Reading symbols from /lib/libsbuf.so.4...(no debugging symbols found)...done.
Loaded symbols for /lib/libsbuf.so.4
Reading symbols from /lib/libm.so.5...(no debugging symbols found)...done.
Loaded symbols for /lib/libm.so.5
Reading symbols from /lib/libnvpair.so.1...(no debugging symbols found)...done.
Loaded symbols for /lib/libnvpair.so.1
Reading symbols from /lib/libuutil.so.1...(no debugging symbols found)...done.
Loaded symbols for /lib/libuutil.so.1
Reading symbols from /lib/libutil.so.7...(no debugging symbols found)...done.
Loaded symbols for /lib/libutil.so.7
Reading symbols from /lib/libc.so.7...(no debugging symbols found)...done.
Loaded symbols for /lib/libc.so.7
Reading symbols from /libexec/ld-elf.so.1...(no debugging symbols found)...done.
Loaded symbols for /libexec/ld-elf.so.1
#0  0x0000000800671a2d in zfs_prop_readonly () from /lib/libzfs.so.1
(gdb) bt
#0  0x0000000800671a2d in zfs_prop_readonly () from /lib/libzfs.so.1
#1  0x0000000800655ea8 in fletcher_4_incremental_byteswap () from /lib/libzfs.so.1
#2  0x0000000800656135 in fletcher_4_incremental_byteswap () from /lib/libzfs.so.1
#3  0x0000000800656a53 in fletcher_4_incremental_byteswap () from /lib/libzfs.so.1
#4  0x000000080065a49f in zfs_send () from /lib/libzfs.so.1
#5  0x0000000000406cda in ?? ()
#6  0x00000000004064c3 in ?? ()
#7  0x0000000000403c4e in ?? ()
....
#44 0x0000000000000004 in ?? ()
#45 0x0000000000000038 in ?? ()
#46 0x0000000000000005 in ?? ()
#47 0x0000000000000007 in ?? ()
---Type <return> to continue, or q <return> to quit---q
Quit
#
>How-To-Repeat:
zfs snapshot pool at name
zfs send -R pool at name
>Fix:
None.

>Release-Note:
>Audit-Trail:
>Unformatted: