savannah: Hang on directory change when not run as root

[cardboard42]

Original: ​http://savannah.gnu.org/bugs/?22300

Submitted by:	Ken Allen <cardboard42>	Submitted on:	Wed 13 Feb 2008 02:57:19 AM UTC
Category:	Core	Severity:	3 - Normal
Status:	None	Privacy:	Public
Assigned to:	None	Open/Closed:	Open
Release:	current (CVS or snapshot)	Operating System:	GNU/Linux

Original submission:

MC hangs for me if I change directories, either by selecting one 
from the panel or cding from the shell. This does not happen if it 
is started as root. I'm using Arch Linux i686 and I tried with 4.6.1
and with cvs. Another Arch user reported the same problem several 
years ago but never reported a fix.

Comment 1 by Pavel Tsekov <ptsekov> at Sun 09 Mar 2008 10:57:37 AM UTC:

Does it happen for every directory or only for certain directories ?
Could you point me to the original bug report ?

Comment 2 by Ken Allen <cardboard42> at Fri 25 Apr 2008 04:58:59 PM UTC:

The original thread is here: http://bbs.archlinux.org/viewtopic.php?id=5469

It doesn't say much more than I already have I'm afraid. It hangs 
for every directory. Everything else appears to work fine.

Comment 3 by Ken Allen <cardboard42> at Sat 26 Apr 2008 03:21:07 PM UTC:

It looks like it only hangs on local directory changes, I can use 
the ftp and zip VFS fine.

[bogdanni]

trace of mc hanging on Mac OS X 10.6

[bogdanni]

Under Mac OS X 10.6 this started to happen a lot. Sample trace attached.

[volo78]

I have exactly the same problem (stack trace is the same). I reproduce it by pressing and holding Tab button. After 20-30 seconds of switching between panels mc hangs.

[vahur]

Same thing started happening on MacOS Ventura (13.0.1).

   2584 Thread_110253   DispatchQueue_1: com.apple.main-thread  (serial)
      2584 start  (in dyld) + 2544  [0x19f833e50]
        2584 main  (in mc) + 1120  [0x1000c881c]
          2584 do_nc  (in mc) + 192  [0x1000f0dcc]
            2584 dlg_run  (in mc) + 32  [0x10018cbd8]
              2584 frontend_dlg_run  (in mc) + 312  [0x10018cd2c]
                2584 dlg_process_event  (in mc) + 128  [0x10018c748]
                  2584 dlg_key_event  (in mc) + 212  [0x10018ca20]
                    2584 group_default_callback  (in mc) + 144  [0x10018d7a8]
                      2584 group_handle_key  (in mc) + 88  [0x10018e0e0]
                        2584 send_message.6326  (in mc) + 76  [0x10018e888]
                          2584 panel_callback  (in mc) + 512  [0x100101d7c]
                            2584 panel_key  (in mc) + 160  [0x1001072dc]
                              2584 panel_execute_cmd  (in mc) + 232  [0x100107468]
                                2584 do_enter  (in mc) + 48  [0x1001041b4]
                                  2584 do_enter_on_file_entry  (in mc) + 108  [0x100104ea8]
                                    2584 panel_cd  (in mc) + 120  [0x100105144]
                                      2584 panel_do_cd  (in mc) + 40  [0x10010520c]
                                        2584 panel_do_cd_int  (in mc) + 220  [0x100105314]
                                          2584 subshell_chdir  (in mc) + 52  [0x100105454]
                                            2584 do_subshell_chdir  (in mc) + 204  [0x10015da30]
                                              2584 feed_subshell  (in mc) + 1560  [0x10015cdb0]
                                                2584 synchronize  (in mc) + 152  [0x10015d55c]
                                                  2584 __sigsuspend  (in libsystem_kernel.dylib) + 8  [0x19fb2c794]

I have use_persistent_buffer = FALSE set in src/subshell/common.c as otherwise mc startup is unbearably slow. The hangs are unpredictable, most of the time changing directory works, but sometimes it just hangs.

[zaytsev]

The latter problem is definitely #4253 and the like.