Stuck CLOSED sockets / sshd / zombies...

[Karl Pielorz]

--On 02 April 2014 14:05 -0400 John Baldwin <jhb at freebsd.org> wrote:

> Grr, I guess that's what I should have expected.  Was sort of hoping to
> be able to see which socket it was blocked on.  Can you run 'kgdb' as root
> (no args), then do 'proc 4346' and 'bt'?  If you are familiar with gdb,
> walk up to the frame that in sys_read and do 'p *uap' so we can see which
> fd is being read.

Ok, think I've done this right (if not, let me know what I should be doing 
:)

"
...
(kgdb) up
#9  0xffffffff80903133 in sys_read (td=<value optimized out>, uap=<value 
optimized out>) at ../../../kern/sys_generic.c:171
171             error = kern_readv(td, uap->fd, &auio);
(kgdb) p *uap
$1 = {fd_l_ = 0xfffff800238bb920 "\b\021I\201ÿÿÿÿ", fd = -2125917944, 
fd_r_ = "ÿÿÿÿ", buf_l_ = 0xfffff800238bb928 "", buf = 
0xfffff800237a1000,
  buf_r_ = 0xfffff800238bb930 "", nbyte_l_ = 0xfffff800238bb930 "", nbyte = 
0, nbyte_r_ = 0xfffff800238bb938 "\020\020z#"}
"

-Karl