lockup in socket_wrapper?

[Volker Lendecke]

On Fri, Jan 26, 2018 at 04:51:19PM +0100, Volker Lendecke via samba-technical wrote:
> Hi!
> 
> Trying a
> 
> make test TESTS=smbclient_ntlm.plain
> 
> in master (d4f7d9e08ca690b8278b35690dfb9e4673c19e00) on a debian
> stretch leads to a hung python process:
> 
> vlendec at vl-vm1:~/git/scratch$ ps uww 28795
> USER       PID %CPU %MEM    VSZ   RSS TTY      STAT START   TIME COMMAND
> vlendec  28795  0.0  0.1  40892  7308 pts/25   S    16:45   0:00 /usr/bin/python /data/vlendec/git/scratch/selftest/tests.py
> 
> with this stack trace:
> 
> #0  __lll_lock_wait () at ../sysdeps/unix/sysv/linux/x86_64/lowlevellock.S:135
> #1  0x00007f8461af4b95 in __GI___pthread_mutex_lock (mutex=0x7f846295a148 <libc_symbol_binding_mutex>) at ../nptl/pthread_mutex_lock.c:80
> #2  0x00007f84627504d9 in swrap_thread_prepare () at ../third_party/socket_wrapper/socket_wrapper.c:5909

Hmm. This happens if you have socket_wrapper already in the LD_PRELOAD
variable. Confusing...

Volker

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