Bug#377205: libc6: pthread_setcanceltype() hangs intermittent after setlocale().

[Gabriel Sailer <Gabriel.Sailer@siemens.com>]

Package: libc6
Version: 2.3.2.ds1-22
Severity: normal
Tags: l10n


Here is the stack of the hanging process:

#0  0x40326321 in pthread_setcanceltype () from /lib/tls/libc.so.6
#1  0x40261819 in setlocale () from /lib/tls/libc.so.6
#2  0x080c1f93 in lmd (sourcename=0x80d1b11 "grmmain.c", line=634,
    actlevel=11, messtr=0x80d1d60 "Sohn (grmevt) mit PID %d terminiert:")
    at lmd.c:417
#3  0x0804d9a0 in handle_sig_cld (dummy=17) at grmmain.c:634
#4  <signal handler called>
#5  0x402b4d06 in mallopt () from /lib/tls/libc.so.6
#6  0x402b3c43 in malloc () from /lib/tls/libc.so.6
#7  0x402a310f in fgets () from /lib/tls/libc.so.6
#8  0x402a31cf in fopen () from /lib/tls/libc.so.6
#9  0x4051c579 in XcursorLibraryPath () from /usr/lib/libXcursor.so.1
#10 0x4051c775 in XcursorLibraryLoadImages () from /usr/lib/libXcursor.so.1
#11 0x4051c97d in XcursorShapeLoadImages () from /usr/lib/libXcursor.so.1
#12 0x4051ccbe in XcursorTryShapeCursor () from /usr/lib/libXcursor.so.1
#13 0x4016afde in XGContextFromGC () from /usr/X11R6/lib/libX11.so.6
#14 0x4016b399 in XCreateGlyphCursor () from /usr/X11R6/lib/libX11.so.6
#15 0x4016b809 in XCreateFontCursor () from /usr/X11R6/lib/libX11.so.6
#16 0x0805f5b9 in l_set_cursor (dp_nr=9, cursor_nr=0, cursor_fcolor=2,
    cursor_bcolor=0) at grmlctrl.c:1193
#17 0x0805ee31 in l_exit_dp (dp=0x815bca8, reset=1) at grmlctrl.c:1053
#18 0x0804e8ff in exit_graphik_dp (dp_list=0x815a940, dp_nr=10, reset_dp=1)
    at grmcomm.c:304
#19 0x0804cbb5 in main_loop () at grmmain.c:191
#20 0x0804c20c in main (argc=10, argv=0xbffff9d4) at grmmain.c:139

The function 'lmd' is called in the signal handler (sigchild).
Here the affected source lines in this function:

void lmd(const char *sourcename, int line, int actlevel, const char *messtr, ...)

{
  long    t;
  struct    tm *tmptr;
  char    *date;
  WORD    err, j, i = 1;
  va_list    ap;

...

  if (lmd_lvlrng[actlevel - 1]) {
    time(&t);
    tmptr = localtime(&t);
    date  = asctime(tmptr);

    if (!lmdinit) {
...
    } else {
...
       /*  get locale setting */
       strcpy(m_current_locale, setlocale(LC_CTYPE, NULL));
       /* set locale to "C" because of %s in format messtr -
          not all languages have UTF8 :-( */

       /* during the setlocale the process is hanging */
       setlocale(LC_CTYPE, "C"); /* <<-- */

       vfprintf(lmd_fp, messtr, ap);
       /* set locale to the old value */
       setlocale(LC_CTYPE, m_current_locale);
       fprintf(lmd_fp, "\n");
       (void)fflush(lmd_fp);
       lmd_byteswritten = ftell(lmd_fp);
       va_end(ap);
     }
  }
  return;
}


-- System Information:
Debian Release: 3.1
Architecture: i386 (i686)
Kernel: Linux 2.6.11.3
Locale: LANG=en_GB.UTF-8, LC_CTYPE=en_GB.UTF-8 (charmap=UTF-8)

Versions of packages libc6 depends on:
ii  libdb1-compat                 2.1.3-7    The Berkeley database routines [gl

-- no debconf information