Re: unkillable firefox

On Tue, Dec 20, 2016 at 01:29:20PM -0800, Steve Kargl wrote:
> Anyone know how to kill firefox?
> 
> last pid: 69652;  load averages:  0.49,  0.27,  0.24      up 1+02:40:06  13:16:02
> 126 processes: 1 running, 121 sleeping, 4 stopped
> CPU:  0.8% user,  0.0% nice,  0.0% system,  0.0% interrupt,  100% idle
> Mem: 2049M Active, 3739M Inact, 496M Laundry, 1365M Wired, 783M Buf, 239M Free
> Swap: 16G Total, 1772K Used, 16G Free
> 
>   PID USERNAME   PRI NICE SIZE    RES STATE   C   TIME    WCPU COMMAND
> 63902 kargl      40   0  3157M  2302M STOP    1  10:50   0.00% firefox{firefox}
> 63902 kargl     -16   0  3157M  2302M STOP    2   5:46   0.00% firefox{Composit
> 16874 kargl      40   0   740M   330M STOP    1   0:07   0.00% firefox{firefox}
> 16874 kargl     -16   0   740M   330M STOP    1   0:00   0.00% firefox{Composit
> 
> It seems that firefox is wedged in the thread firefox{Compositor},
> and slowly eating up memory.  This is on an amd64 system at
> r310125 and latest firefox from ports.  procstat suggests that its
> stuck in a vm sleep queue.
> 
> % procstat -k 63902
>   PID    TID COMM       TDNAME       KSTACK                       
> 63902 100504 firefox    -            mi_switch thread_suspend_switch
>                                      thread_single exit1 sigexit postsig ast
>                                      Xfast_syscall 
> 63902 101494 firefox    Compositor   mi_switch sleepq_wait _sleep 
>                                      vm_page_busy_sleep vm_page_sleep_if_busy
>                                      vm_fault_hold vm_fault trap_pfault trap
>                                      calltrap 
> 

Firefox is still fubar on freebsd-current.  Following kib's
instructions in the thread "Mozilla firefox freezes/zombie on FreeBSD
current" thread, here's the requested kernel info
  PID USERNAME    THR PRI NICE   SIZE    RES STATE   C   TIME    WCPU COMMAND
96285 kargl        64  40    0  1008M   678M select  0   2:01  18.10% firefox
96256 kargl         2  47    0   834M   304M STOP    0   0:04   0.00% firefox
96276 kargl         2  40    0   593M   307M STOP    1   0:03   0.00% firefox
96265 kargl         2  40    0   592M   307M STOP    1   0:03   0.00% firefox

% ps -H -o pid,lwp,mwchan,nwchan 96265
  PID    LWP MWCHAN NWCHAN
96265 100137 -      -
96265 100737 vmpfw  fffff80232a1a980

% kgdb /usr/obj/usr/src/sys/SPEW/kernel.full /dev/mem
(kgdb) p/x *(struct vm_page *)0xfffff80232a1a980
$1 = {plinks = {q = {tqe_next = 0xfffff8023467d980, 
      tqe_prev = 0xffffffff80d9e1b8}, s = {ss = {
        sle_next = 0xfffff8023467d980}, pv = 0xffffffff80d9e1b8}, memguard = {
      p = 0xfffff8023467d980, v = 0xffffffff80d9e1b8}}, listq = {
    tqe_next = 0xfffff80232a1a9e8, tqe_prev = 0xfffff8010c0614f8}, 
  object = 0xfffff8010c0614b0, pindex = 0x0, phys_addr = 0x59600000, md = {
    pv_list = {tqh_first = 0x0, tqh_last = 0xfffff80232a1a9b8}, 
    pv_gen = 0x31c, pat_mode = 0x6}, wire_count = 0x0, busy_lock = 0x6, 
  hold_count = 0x0, flags = 0x0, aflags = 0x2, oflags = 0x4, queue = 0xff, 
  psind = 0x1, segind = 0x3, order = 0xd, pool = 0x0, act_count = 0x0, 
  valid = 0xff, dirty = 0x0}
(kgdb) p/x *(struct vm_object *)0xfffff8010c0614b0
$2 = {lock = {lock_object = {lo_name = 0xffffffff80937e16, 
      lo_flags = 0x25630000, lo_data = 0x0, lo_witness = 0x0}, rw_lock = 0x1}, 
  object_list = {tqe_next = 0xfffff8010c0615a0, 
    tqe_prev = 0xfffff8010c0613e0}, shadow_head = {lh_first = 0x0}, 
  shadow_list = {le_next = 0x0, le_prev = 0x0}, memq = {
    tqh_first = 0xfffff80232a1a980, tqh_last = 0xfffff80234685e00}, rtree = {
    rt_root = 0xfffff80138b253f0}, size = 0x347, generation = 0x1, 
  ref_count = 0x3, shadow_count = 0x0, memattr = 0x6, type = 0x4, 
  flags = 0x1016, pg_color = 0x0, paging_in_progress = 0x1, 
  resident_page_count = 0x347, backing_object = 0x0, 
  backing_object_offset = 0x0, pager_object_list = {
    tqe_next = 0xfffff801d68e93c0, tqe_prev = 0xfffff801058c8cc8}, rvq = {
    lh_first = 0xfffff80230563d00}, handle = 0x0, un_pager = {vnp = {
      vnp_size = 0x0, writemappings = 0xfffff8010c061568}, devp = {
      devp_pglist = {tqh_first = 0x0, tqh_last = 0xfffff8010c061568}, 
      ops = 0xffffffff81367fa0, dev = 0xfffff80153397048}, sgp = {
      sgp_pglist = {tqh_first = 0x0, tqh_last = 0xfffff8010c061568}}, swp = {
      swp_tmpfs = 0x0, swp_bcount = 0xc061568}}, cred = 0x0, charge = 0x0, 
  umtx_data = 0x0}

-- 
Steve
20161221 https://www.youtube.com/watch?v=IbCHE-hONow