tests/misc/sort-stale-thread-mem.sh

   1 #!/bin/sh
   2 # Trigger a bug that would cause 'sort' to reference stale thread stack memory.
   3
   4 # Copyright (C) 2010-2016 Free Software Foundation, Inc.
   5
   6 # This program is free software: you can redistribute it and/or modify
   7 # it under the terms of the GNU General Public License as published by
   8 # the Free Software Foundation, either version 3 of the License, or
   9 # (at your option) any later version.
  10
  11 # This program is distributed in the hope that it will be useful,
  12 # but WITHOUT ANY WARRANTY; without even the implied warranty of
  13 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  14 # GNU General Public License for more details.
  15
  16 # You should have received a copy of the GNU General Public License
  17 # along with this program.  If not, see <http://www.gnu.org/licenses/>.
  18
  19 # written by Jim Meyering and Paul Eggert
  20
  21 . "${srcdir=.}/tests/init.sh"; path_prepend_ ./src
  22 print_ver_ sort
  23
  24 very_expensive_
  25 require_valgrind_
  26
  27 grep '^#define HAVE_PTHREAD_T 1' "$CONFIG_HEADER" > /dev/null ||
  28   skip_ 'requires pthreads'
  29
  30 # gensort output seems to trigger the failure more often,
  31 # so prefer gensort if it is available.
  32 (gensort -a 10000 in) 2>/dev/null ||
  33   seq -f %-98f 10000 | shuf > in ||
  34   framework_failure_
  35
  36 # On Fedora-17-beta (valgrind-3.7.0-2.fc17.x86_64), this evokes two
  37 # "Conditional jump or move depends on uninitialised value(s)" errors,
  38 # each originating from _dl_start.
  39 valgrind --quiet --error-exitcode=3 sort --version > /dev/null ||
  40   framework_failure_ 'valgrind fails for trivial sort invocation'
  41
  42 # With the bug, 'sort' would fail under valgrind about half the time,
  43 # on some circa-2010 multicore Linux platforms.  Run the test 100 times
  44 # so that the probability of missing the bug should be about 1 in
  45 # 2**100 on these hosts.
  46 for i in $(seq 100); do
  47   valgrind --quiet --error-exitcode=3 \
  48       sort -S 100K --parallel=2 in > /dev/null ||
  49     { fail=$?; echo iteration $i failed; Exit $fail; }
  50 done
  51
  52 Exit $fail