Stuck CLOSED sockets / sshd / zombies...

[Karl Pielorz]

--On 09 April 2014 11:49 +0300 Konstantin Belousov <kostikbel at gmail.com> 
wrote:

> Hm, I think my instructions were flawed, you have to install with
> DEBUG_FLAGS as well:
> make install DEBUG_FLAGS=-g
>
> You do not need to re-run the tests if rtld did not changed after
> the installation.  Reinstall and get the backtrace again, please.

Ok, did that - output below,

-Karl

---

"
[Switching to LWP 100218]
0x00000008038ea89c in __error () from /lib/libthr.so.3
(gdb) bt
#0  0x00000008038ea89c in __error () from /lib/libthr.so.3
#1  0x00000008038e104f in __thr_rwlock_rdlock (rwlock=0x803af9480, 
flags=<value optimized out>, tsp=<value optimized out>)
    at /usr/src/lib/libthr/thread/thr_umtx.c:277
#2  0x00000008038e821c in _thr_rtld_rlock_acquire (lock=0x803af9480) at 
atomic.h:143
#3  0x000000080064f9a2 in digest_dynamic1 (obj=0x80085fe00, early=32767, 
dyn_rpath=0x80582a93c, dyn_soname=0x80582a93c, dyn_runpath=0x7fffffffba30)
    at /usr/src/libexec/rtld-elf/rtld.c:1103
#4  0x00000008006498c9 in objlist_call_init (list=<value optimized out>, 
lockstate=0x0) at /usr/src/libexec/rtld-elf/rtld.c:287
#5  0x00000008006470cd in _rtld_bind_start () at 
/usr/src/libexec/rtld-elf/amd64/rtld_start.S:121
#6  0x000000000041072c in grace_alarm_handler (sig=-17504) at 
/usr/src/secure/usr.sbin/sshd/../../../crypto/openssh/sshd.c:378
#7  <signal handler called>
#8  0x00000008038ea89c in __error () from /lib/libthr.so.3
#9  0x00000008038e104f in __thr_rwlock_rdlock (rwlock=0x803af9480, 
flags=<value optimized out>, tsp=<value optimized out>)
    at /usr/src/lib/libthr/thread/thr_umtx.c:277
#10 0x00000008038e821c in _thr_rtld_rlock_acquire (lock=0x803af9480) at 
atomic.h:143
#11 0x000000080064f9a2 in digest_dynamic1 (obj=0x80085fe00, early=32767, 
dyn_rpath=0x8038d8e30, dyn_soname=0x100000001, dyn_runpath=0x7fffffffc040)
    at /usr/src/libexec/rtld-elf/rtld.c:1103
#12 0x00000008006498c9 in objlist_call_init (list=<value optimized out>, 
lockstate=0xffff00001f80) at /usr/src/libexec/rtld-elf/rtld.c:287
#13 0x00000008006470cd in _rtld_bind_start () at 
/usr/src/libexec/rtld-elf/amd64/rtld_start.S:121
#14 0x000000000042f9dd in sshpam_sigchld_handler (sig=<value optimized 
out>) at 
/usr/src/secure/usr.sbin/sshd/../../../crypto/openssh/auth-pam.c:152
#15 <signal handler called>
#16 0x0000000800653aea in lmc_parse () at 
/usr/src/libexec/rtld-elf/libmap.c:306
#17 0x000000080064a835 in objlist_call_fini () at 
/usr/src/libexec/rtld-elf/rtld.c:2267
#18 0x000000080064a1eb in symlook_default (req=0x7fffffffd050, 
refobj=<value optimized out>) at /usr/src/libexec/rtld-elf/rtld.c:3620
#19 0x0000000800edd121 in openpam_clear_chains () from /usr/lib/libpam.so.5
#20 0x0000000800edd0bc in openpam_clear_chains () from /usr/lib/libpam.so.5
#21 0x0000000800edd0bc in openpam_clear_chains () from /usr/lib/libpam.so.5
#22 0x0000000800edd061 in openpam_clear_chains () from /usr/lib/libpam.so.5
#23 0x0000000800ed99e7 in pam_end () from /usr/lib/libpam.so.5
#24 0x000000000042e15d in sshpam_cleanup () at 
/usr/src/secure/usr.sbin/sshd/../../../crypto/openssh/auth-pam.c:614
#25 0x000000000041d58f in do_cleanup (authctxt=0x80401a600) at 
/usr/src/secure/usr.sbin/sshd/../../../crypto/openssh/session.c:2732
#26 0x000000000041064f in ssh_cleanup_exit (i=255) at 
/usr/src/secure/usr.sbin/sshd/../../../crypto/openssh/sshd.c:2545
#27 0x0000000000428f83 in mm_request_receive (sock=<value optimized out>, 
m=<value optimized out>)
    at 
/usr/src/secure/usr.sbin/sshd/../../../crypto/openssh/monitor_wrap.c:153
#28 0x0000000000427e26 in monitor_read (pmonitor=0x804022220, ent=0x6465a0, 
pent=0x7fffffffd0c0)
    at /usr/src/secure/usr.sbin/sshd/../../../crypto/openssh/monitor.c:593
#29 0x0000000000427b49 in monitor_child_preauth (_authctxt=<value optimized 
out>, pmonitor=0x804022220)
    at /usr/src/secure/usr.sbin/sshd/../../../crypto/openssh/monitor.c:387
#30 0x000000000040fd15 in main (ac=<value optimized out>, av=<value 
optimized out>) at 
/usr/src/secure/usr.sbin/sshd/../../../crypto/openssh/sshd.c:679
"