[Bug 209421] Processes hangs in D state, suspfs or vofflock wchan under FreeBSD 10.X

[bugzilla-noreply at freebsd.org]

https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=209421

vvv <work+freebsd at vvv.kiev.ua> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
            Version|10.3-RELEASE                |11.0-RELEASE

--- Comment #6 from vvv <work+freebsd at vvv.kiev.ua> ---
uname -a:
FreeBSD hostname 11.0-RELEASE-p1 FreeBSD 11.0-RELEASE-p1 #0 r306420: Thu Sep 29
01:43:23 UTC 2016     root at releng2.nyi.freebsd.org:/usr/obj/usr/src/sys/GENERIC
 amd64

ps auxwwO wchan:
user123          21246   0,0  0,2  192920   45800  -  D    18:20        0:00,19
/usr/local/bin/p 21246 suspfs    -  D         0:00,19 /usr/local/bin/php-cgi
root             21442   0,0  0,0    8396    2676  -  Ds   18:21        0:00,01
find -H /tmp -na 21442 suspfs    -  Ds        0:00,01 find -H /tmp -name sess_*
-mtime +1h -delete
user234          21669   0,0  0,0   11544    3420  -  D    18:21        0:00,02
unzip -ao /tmp/f 21669 suspfs    -  D         0:00,02 unzip -ao
/tmp/fm/55BA42987CD9F1D024546F689963E25C/dist.zip -d
/tmp/fm/55BA42987CD9F1D024546F689963E25C
www              22188   0,0  0,2  146188   62200  -  D    18:23        0:00,24
/usr/local/sbin/ 22188 suspfs    -  D         0:00,24 /usr/local/sbin/httpd -f
/usr/local/etc/apache24/httpd.conf -c PidFile /var/run/httpd.users.pid
www              22439   0,0  0,2  146188   61772  -  D    18:24        0:00,03
/usr/local/sbin/ 22439 suspfs    -  D         0:00,03 /usr/local/sbin/httpd -f
/usr/local/etc/apache24/httpd.conf -c PidFile /var/run/httpd.users.pid
www              22442   0,0  0,2  146188   61768  -  D    18:24        0:00,02
/usr/local/sbin/ 22442 suspfs    -  D         0:00,02 /usr/local/sbin/httpd -f
/usr/local/etc/apache24/httpd.conf -c PidFile /var/run/httpd.users.pid
www              22789   0,0  0,2  146188   61780  -  D    18:26        0:00,03
/usr/local/sbin/ 22789 suspfs    -  D         0:00,03 /usr/local/sbin/httpd -f
/usr/local/etc/apache24/httpd.conf -c PidFile /var/run/httpd.users.pid
www              22790   0,0  0,2  146188   61772  -  D    18:26        0:00,02
/usr/local/sbin/ 22790 suspfs    -  D         0:00,02 /usr/local/sbin/httpd -f
/usr/local/etc/apache24/httpd.conf -c PidFile /var/run/httpd.users.pid
www              22799   0,0  0,2  146188   61800  -  D    18:26        0:00,03
/usr/local/sbin/ 22799 suspfs    -  D         0:00,03 /usr/local/sbin/httpd -f
/usr/local/etc/apache24/httpd.conf -c PidFile /var/run/httpd.users.pid
www              22802   0,0  0,2  146188   61764  -  D    18:26        0:00,02
/usr/local/sbin/ 22802 suspfs    -  D         0:00,02 /usr/local/sbin/httpd -f
/usr/local/etc/apache24/httpd.conf -c PidFile /var/run/httpd.users.pid
user345          22821   0,0  0,0   44148    3504  -  Ds   18:26        0:00,12
ftpd: bzq-79-183 22821 range     -  Ds        0:00,12 ftpd:
???.red.bezeqint.net: user/user345: STOR
pack-473a0372073c2c7baee9ef960158fa0d3fa750e4.idx\r\n (ftpd)
www              22834   0,0  0,2  146188   61764  -  D    18:26        0:00,02
/usr/local/sbin/ 22834 suspfs    -  D         0:00,02 /usr/local/sbin/httpd -f
/usr/local/etc/apache24/httpd.conf -c PidFile /var/run/httpd.users.pid
www              22935   0,0  0,2  146188   61828  -  D    18:26        0:00,04
/usr/local/sbin/ 22935 vofflock  -  D         0:00,04 /usr/local/sbin/httpd -f
/usr/local/etc/apache24/httpd.conf -c PidFile /var/run/httpd.users.pid
www              23009   0,0  0,2  146188   61772  -  D    18:27        0:00,01
/usr/local/sbin/ 23009 vofflock  -  D         0:00,01 /usr/local/sbin/httpd -f
/usr/local/etc/apache24/httpd.conf -c PidFile /var/run/httpd.users.pid
.....

procstat -kk 22188:
  PID    TID COMM             TDNAME           KSTACK                       
22188 100207 httpd            -                mi_switch+0xd2 sleepq_wait+0x3a
_sleep+0x2a1 vn_start_write_locked+0xa6 vn_start_write+0xdf vn_close+0x5b
vn_closefile+0x4a _fdrop+0x1a closef+0x2d4 closefp+0xb6 amd64_syscall+0x4ce
Xfast_syscall+0xfb 

procstat -kk 22935:
  PID    TID COMM             TDNAME           KSTACK                       
22935 100997 httpd            -                mi_switch+0xd2 sleepq_wait+0x3a
_sleep+0x2a1 foffset_lock+0xda vn_io_fault+0x5a dofilewrite+0x87
kern_writev+0x68 sys_write+0x84 amd64_syscall+0x4ce Xfast_syscall+0xfb

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