Subject: Re: [Dev-luatex] bug#48064: texlive-* packages fail to build non-deterministically

From: Thiago Jung Bauermann <[email-masked]>
Date: Fri, 02 Jul 2021 12:11:00 -0300

Em quarta-feira, 30 de junho de 2021, às 08:53:41 -03, luigi scarso escreveu:
> On Wed, Jun 30, 2021 at 8:20 AM Ludovic Courtès <[email-masked]> wrote:
> > Hi,
> > 
> > Ludovic Courtès <[email-masked]> skribis:
> > > While investigating luatex crashes in the TeX Live 2020 package of
> > > GNU Guix¹, we identified the following heap corruption reported by
> > 
> > > Valgrind (this is on GNU/Linux, with glibc 2.33):
> > This time with debug info for luatex:
> Thank you for the report, I will check asap.

Thanks! I was able to run Valgrind on LuaTeX 1.13.0, which is the latest 
one in TeX Live 2021.

The invalid reads and writes don’t happen on every run. I had to re-run the 
command 3 or 4 times until I got the result below (which matches our 
experience with the build failures in Guix packages)

-- 
Thanks,
Thiago

$ valgrind --extra-debuginfo-path=/gnu/store/rkhx3pj1qi7fx6pi9p2cg2sb9zn59qmg-profile/lib/debug luatex amsclass.ins
==239904== Memcheck, a memory error detector
==239904== Copyright (C) 2002-2017, and GNU GPL'd, by Julian Seward et al.
==239904== Using Valgrind-3.17.0 and LibVEX; rerun with -h for copyright info
==239904== Command: luatex amsclass.ins
==239904==
This is LuaTeX, Version 1.13.0 (TeX Live 2021)
 restricted system commands enabled.
==239904== Invalid write of size 8
==239904==    at 0x4860691: lua_pushlstring (lapi.c:483)
==239904==    by 0x56A963: load_hyphenation (texlang.c:306)
==239904==    by 0x56D0CC: undump_one_language (texlang.c:1277)
==239904==    by 0x56D0CC: undump_language_data (texlang.c:1290)
==239904==    by 0x4E0D7F: load_fmt_file (dumpdata.c:520)
==239904==    by 0x4F03DD: main_body (mainbody.c:540)
==239904==    by 0x45118D: main (luatex.c:609)
==239904==  Address 0x894aa30 is 0 bytes after a block of size 1,184 alloc'd
==239904==    at 0x484242B: realloc (in /gnu/store/a4xjjppiw7x0vgd2jimmzssj9i22jf5f-valgrind-3.17.0/libexec/valgrind/vgpreload_memcheck-amd64-linux.so)
==239904==    by 0x466BCD: my_luaalloc (luastuff.c:115)
==239904==    by 0x48719C2: luaM_realloc_ (lmem.c:86)
==239904==    by 0x486A122: luaD_reallocstack (ldo.c:182)
==239904==    by 0x486CC17: traversethread (lgc.c:549)
==239904==    by 0x486CC17: propagatemark (lgc.c:588)
==239904==    by 0x486CFFF: singlestep (lgc.c:1057)
==239904==    by 0x486D8BB: luaC_step (lgc.c:1137)
==239904==    by 0x48606BB: lua_pushlstring (lapi.c:485)
==239904==    by 0x56A963: load_hyphenation (texlang.c:306)
==239904==    by 0x56D0CC: undump_one_language (texlang.c:1277)
==239904==    by 0x56D0CC: undump_language_data (texlang.c:1290)
==239904==    by 0x4E0D7F: load_fmt_file (dumpdata.c:520)
==239904==    by 0x4F03DD: main_body (mainbody.c:540)
==239904==
==239904== Invalid write of size 4
==239904==    at 0x48606A2: lua_pushlstring (lapi.c:483)
==239904==    by 0x56A963: load_hyphenation (texlang.c:306)
==239904==    by 0x56D0CC: undump_one_language (texlang.c:1277)
==239904==    by 0x56D0CC: undump_language_data (texlang.c:1290)
==239904==    by 0x4E0D7F: load_fmt_file (dumpdata.c:520)
==239904==    by 0x4F03DD: main_body (mainbody.c:540)
==239904==    by 0x45118D: main (luatex.c:609)
==239904==  Address 0x894aa38 is 8 bytes after a block of size 1,184 alloc'd
==239904==    at 0x484242B: realloc (in /gnu/store/a4xjjppiw7x0vgd2jimmzssj9i22jf5f-valgrind-3.17.0/libexec/valgrind/vgpreload_memcheck-amd64-linux.so)
==239904==    by 0x466BCD: my_luaalloc (luastuff.c:115)
==239904==    by 0x48719C2: luaM_realloc_ (lmem.c:86)
==239904==    by 0x486A122: luaD_reallocstack (ldo.c:182)
==239904==    by 0x486CC17: traversethread (lgc.c:549)
==239904==    by 0x486CC17: propagatemark (lgc.c:588)
==239904==    by 0x486CFFF: singlestep (lgc.c:1057)
==239904==    by 0x486D8BB: luaC_step (lgc.c:1137)
==239904==    by 0x48606BB: lua_pushlstring (lapi.c:485)
==239904==    by 0x56A963: load_hyphenation (texlang.c:306)
==239904==    by 0x56D0CC: undump_one_language (texlang.c:1277)
==239904==    by 0x56D0CC: undump_language_data (texlang.c:1290)
==239904==    by 0x4E0D7F: load_fmt_file (dumpdata.c:520)
==239904==    by 0x4F03DD: main_body (mainbody.c:540)
==239904==
==239904== Invalid read of size 16
==239904==    at 0x4861269: lua_rawset (lapi.c:809)
==239904==    by 0x56A974: load_hyphenation (texlang.c:307)
==239904==    by 0x56D0CC: undump_one_language (texlang.c:1277)
==239904==    by 0x56D0CC: undump_language_data (texlang.c:1290)
==239904==    by 0x4E0D7F: load_fmt_file (dumpdata.c:520)
==239904==    by 0x4F03DD: main_body (mainbody.c:540)
==239904==    by 0x45118D: main (luatex.c:609)
==239904==  Address 0x894aa30 is 0 bytes after a block of size 1,184 alloc'd
==239904==    at 0x484242B: realloc (in /gnu/store/a4xjjppiw7x0vgd2jimmzssj9i22jf5f-valgrind-3.17.0/libexec/valgrind/vgpreload_memcheck-amd64-linux.so)
==239904==    by 0x466BCD: my_luaalloc (luastuff.c:115)
==239904==    by 0x48719C2: luaM_realloc_ (lmem.c:86)
==239904==    by 0x486A122: luaD_reallocstack (ldo.c:182)
==239904==    by 0x486CC17: traversethread (lgc.c:549)
==239904==    by 0x486CC17: propagatemark (lgc.c:588)
==239904==    by 0x486CFFF: singlestep (lgc.c:1057)
==239904==    by 0x486D8BB: luaC_step (lgc.c:1137)
==239904==    by 0x48606BB: lua_pushlstring (lapi.c:485)
==239904==    by 0x56A963: load_hyphenation (texlang.c:306)
==239904==    by 0x56D0CC: undump_one_language (texlang.c:1277)
==239904==    by 0x56D0CC: undump_language_data (texlang.c:1290)
==239904==    by 0x4E0D7F: load_fmt_file (dumpdata.c:520)
==239904==    by 0x4F03DD: main_body (mainbody.c:540)
==239904==
==239904== Invalid read of size 1
==239904==    at 0x486127D: lua_rawset (lapi.c:811)
==239904==    by 0x56A974: load_hyphenation (texlang.c:307)
==239904==    by 0x56D0CC: undump_one_language (texlang.c:1277)
==239904==    by 0x56D0CC: undump_language_data (texlang.c:1290)
==239904==    by 0x4E0D7F: load_fmt_file (dumpdata.c:520)
==239904==    by 0x4F03DD: main_body (mainbody.c:540)
==239904==    by 0x45118D: main (luatex.c:609)
==239904==  Address 0x894aa38 is 8 bytes after a block of size 1,184 alloc'd
==239904==    at 0x484242B: realloc (in /gnu/store/a4xjjppiw7x0vgd2jimmzssj9i22jf5f-valgrind-3.17.0/libexec/valgrind/vgpreload_memcheck-amd64-linux.so)
==239904==    by 0x466BCD: my_luaalloc (luastuff.c:115)
==239904==    by 0x48719C2: luaM_realloc_ (lmem.c:86)
==239904==    by 0x486A122: luaD_reallocstack (ldo.c:182)
==239904==    by 0x486CC17: traversethread (lgc.c:549)
==239904==    by 0x486CC17: propagatemark (lgc.c:588)
==239904==    by 0x486CFFF: singlestep (lgc.c:1057)
==239904==    by 0x486D8BB: luaC_step (lgc.c:1137)
==239904==    by 0x48606BB: lua_pushlstring (lapi.c:485)
==239904==    by 0x56A963: load_hyphenation (texlang.c:306)
==239904==    by 0x56D0CC: undump_one_language (texlang.c:1277)
==239904==    by 0x56D0CC: undump_language_data (texlang.c:1290)
==239904==    by 0x4E0D7F: load_fmt_file (dumpdata.c:520)
==239904==    by 0x4F03DD: main_body (mainbody.c:540)
==239904==
==239904== Invalid write of size 8
==239904==    at 0x485F068: auxgetstr (lapi.c:596)
==239904==    by 0x463955: check_texconfig_init (luainit.c:1198)
==239904==    by 0x4F0507: main_body (mainbody.c:565)
==239904==    by 0x45118D: main (luatex.c:609)
==239904==  Address 0x894aa30 is 0 bytes after a block of size 1,184 alloc'd
==239904==    at 0x484242B: realloc (in /gnu/store/a4xjjppiw7x0vgd2jimmzssj9i22jf5f-valgrind-3.17.0/libexec/valgrind/vgpreload_memcheck-amd64-linux.so)
==239904==    by 0x466BCD: my_luaalloc (luastuff.c:115)
==239904==    by 0x48719C2: luaM_realloc_ (lmem.c:86)
==239904==    by 0x486A122: luaD_reallocstack (ldo.c:182)
==239904==    by 0x486CC17: traversethread (lgc.c:549)
==239904==    by 0x486CC17: propagatemark (lgc.c:588)
==239904==    by 0x486CFFF: singlestep (lgc.c:1057)
==239904==    by 0x486D8BB: luaC_step (lgc.c:1137)
==239904==    by 0x48606BB: lua_pushlstring (lapi.c:485)
==239904==    by 0x56A963: load_hyphenation (texlang.c:306)
==239904==    by 0x56D0CC: undump_one_language (texlang.c:1277)
==239904==    by 0x56D0CC: undump_language_data (texlang.c:1290)
==239904==    by 0x4E0D7F: load_fmt_file (dumpdata.c:520)
==239904==    by 0x4F03DD: main_body (mainbody.c:540)
==239904==
==239904== Invalid write of size 4
==239904==    at 0x485F07A: auxgetstr (lapi.c:596)
==239904==    by 0x463955: check_texconfig_init (luainit.c:1198)
==239904==    by 0x4F0507: main_body (mainbody.c:565)
==239904==    by 0x45118D: main (luatex.c:609)
==239904==  Address 0x894aa38 is 8 bytes after a block of size 1,184 alloc'd
==239904==    at 0x484242B: realloc (in /gnu/store/a4xjjppiw7x0vgd2jimmzssj9i22jf5f-valgrind-3.17.0/libexec/valgrind/vgpreload_memcheck-amd64-linux.so)
==239904==    by 0x466BCD: my_luaalloc (luastuff.c:115)
==239904==    by 0x48719C2: luaM_realloc_ (lmem.c:86)
==239904==    by 0x486A122: luaD_reallocstack (ldo.c:182)
==239904==    by 0x486CC17: traversethread (lgc.c:549)
==239904==    by 0x486CC17: propagatemark (lgc.c:588)
==239904==    by 0x486CFFF: singlestep (lgc.c:1057)
==239904==    by 0x486D8BB: luaC_step (lgc.c:1137)
==239904==    by 0x48606BB: lua_pushlstring (lapi.c:485)
==239904==    by 0x56A963: load_hyphenation (texlang.c:306)
==239904==    by 0x56D0CC: undump_one_language (texlang.c:1277)
==239904==    by 0x56D0CC: undump_language_data (texlang.c:1290)
==239904==    by 0x4E0D7F: load_fmt_file (dumpdata.c:520)
==239904==    by 0x4F03DD: main_body (mainbody.c:540)
==239904==
==239904== Invalid write of size 4
==239904==    at 0x4880608: luaV_finishget (lvm.c:176)
==239904==    by 0x485F089: auxgetstr (lapi.c:598)
==239904==    by 0x463955: check_texconfig_init (luainit.c:1198)
==239904==    by 0x4F0507: main_body (mainbody.c:565)
==239904==    by 0x45118D: main (luatex.c:609)
==239904==  Address 0x894aa38 is 8 bytes after a block of size 1,184 alloc'd
==239904==    at 0x484242B: realloc (in /gnu/store/a4xjjppiw7x0vgd2jimmzssj9i22jf5f-valgrind-3.17.0/libexec/valgrind/vgpreload_memcheck-amd64-linux.so)
==239904==    by 0x466BCD: my_luaalloc (luastuff.c:115)
==239904==    by 0x48719C2: luaM_realloc_ (lmem.c:86)
==239904==    by 0x486A122: luaD_reallocstack (ldo.c:182)
==239904==    by 0x486CC17: traversethread (lgc.c:549)
==239904==    by 0x486CC17: propagatemark (lgc.c:588)
==239904==    by 0x486CFFF: singlestep (lgc.c:1057)
==239904==    by 0x486D8BB: luaC_step (lgc.c:1137)
==239904==    by 0x48606BB: lua_pushlstring (lapi.c:485)
==239904==    by 0x56A963: load_hyphenation (texlang.c:306)
==239904==    by 0x56D0CC: undump_one_language (texlang.c:1277)
==239904==    by 0x56D0CC: undump_language_data (texlang.c:1290)
==239904==    by 0x4E0D7F: load_fmt_file (dumpdata.c:520)
==239904==    by 0x4F03DD: main_body (mainbody.c:540)
==239904==
==239904== Invalid read of size 4
==239904==    at 0x485F092: auxgetstr (lapi.c:601)
==239904==    by 0x463955: check_texconfig_init (luainit.c:1198)
==239904==    by 0x4F0507: main_body (mainbody.c:565)
==239904==    by 0x45118D: main (luatex.c:609)
==239904==  Address 0x894aa38 is 8 bytes after a block of size 1,184 alloc'd
==239904==    at 0x484242B: realloc (in /gnu/store/a4xjjppiw7x0vgd2jimmzssj9i22jf5f-valgrind-3.17.0/libexec/valgrind/vgpreload_memcheck-amd64-linux.so)
==239904==    by 0x466BCD: my_luaalloc (luastuff.c:115)
==239904==    by 0x48719C2: luaM_realloc_ (lmem.c:86)
==239904==    by 0x486A122: luaD_reallocstack (ldo.c:182)
==239904==    by 0x486CC17: traversethread (lgc.c:549)
==239904==    by 0x486CC17: propagatemark (lgc.c:588)
==239904==    by 0x486CFFF: singlestep (lgc.c:1057)
==239904==    by 0x486D8BB: luaC_step (lgc.c:1137)
==239904==    by 0x48606BB: lua_pushlstring (lapi.c:485)
==239904==    by 0x56A963: load_hyphenation (texlang.c:306)
==239904==    by 0x56D0CC: undump_one_language (texlang.c:1277)
==239904==    by 0x56D0CC: undump_language_data (texlang.c:1290)
==239904==    by 0x4E0D7F: load_fmt_file (dumpdata.c:520)
==239904==    by 0x4F03DD: main_body (mainbody.c:540)
==239904==
==239904== Invalid read of size 4
==239904==    at 0x485F6D9: lua_type (lapi.c:253)
==239904==    by 0x463966: check_texconfig_init (luainit.c:1199)
==239904==    by 0x4F0507: main_body (mainbody.c:565)
==239904==    by 0x45118D: main (luatex.c:609)
==239904==  Address 0x894aa38 is 8 bytes after a block of size 1,184 alloc'd
==239904==    at 0x484242B: realloc (in /gnu/store/a4xjjppiw7x0vgd2jimmzssj9i22jf5f-valgrind-3.17.0/libexec/valgrind/vgpreload_memcheck-amd64-linux.so)
==239904==    by 0x466BCD: my_luaalloc (luastuff.c:115)
==239904==    by 0x48719C2: luaM_realloc_ (lmem.c:86)
==239904==    by 0x486A122: luaD_reallocstack (ldo.c:182)
==239904==    by 0x486CC17: traversethread (lgc.c:549)
==239904==    by 0x486CC17: propagatemark (lgc.c:588)
==239904==    by 0x486CFFF: singlestep (lgc.c:1057)
==239904==    by 0x486D8BB: luaC_step (lgc.c:1137)
==239904==    by 0x48606BB: lua_pushlstring (lapi.c:485)
==239904==    by 0x56A963: load_hyphenation (texlang.c:306)
==239904==    by 0x56D0CC: undump_one_language (texlang.c:1277)
==239904==    by 0x56D0CC: undump_language_data (texlang.c:1290)
==239904==    by 0x4E0D7F: load_fmt_file (dumpdata.c:520)
==239904==    by 0x4F03DD: main_body (mainbody.c:540)
==239904==
(./amsclass.ins (/gnu/store/rkhx3pj1qi7fx6pi9p2cg2sb9zn59qmg-profile/share/texmf-dist/tex/latex/base/docstrip.tex==239904== Conditional jump or move depends on uninitialised value(s)
==239904==    at 0x4647BD: tprint (printing.c:484)
==239904==    by 0x4E5E6B: write_out (extensions.c:583)
==239904==    by 0x4E62EA: wrapup_leader (extensions.c:1324)
==239904==    by 0x4E62EA: do_extension (extensions.c:423)
==239904==    by 0x4F4860: main_control (maincontrol.c:1030)
==239904==    by 0x4F0537: main_body (mainbody.c:577)
==239904==    by 0x45118D: main (luatex.c:609)
==239904==

==239904== Conditional jump or move depends on uninitialised value(s)
==239904==    at 0x4647BD: tprint (printing.c:484)
==239904==    by 0x4E5DED: write_out (extensions.c:585)
==239904==    by 0x4E62EA: wrapup_leader (extensions.c:1324)
==239904==    by 0x4E62EA: do_extension (extensions.c:423)
==239904==    by 0x4F4860: main_control (maincontrol.c:1030)
==239904==    by 0x4F0537: main_body (mainbody.c:577)
==239904==    by 0x45118D: main (luatex.c:609)
==239904==
Utility: `docstrip' v2.6a <2020-07-07>
English documentation    <2020-07-11>
==239904== Conditional jump or move depends on uninitialised value(s)
==239904==    at 0x464523: tprint (printing.c:512)
==239904==    by 0x4E5DED: write_out (extensions.c:585)
==239904==    by 0x4E62EA: wrapup_leader (extensions.c:1324)
==239904==    by 0x4E62EA: do_extension (extensions.c:423)
==239904==    by 0x4F4860: main_control (maincontrol.c:1030)
==239904==    by 0x4F0537: main_body (mainbody.c:577)
==239904==    by 0x45118D: main (luatex.c:609)
==239904==

**********************************************************
* This program converts documented macro-files into fast *
* loadable files by stripping off (nearly) all comments! *
**********************************************************

********************************************************
* No Configuration file found, using default settings. *
********************************************************

)

Generating file(s) amsthm.sty amsart.cls amsbook.cls amsproc.cls

Processing file amsclass.dtx (amsthm) -> amsthm.sty
                             (amsart,classes) -> amsart.cls
                             (amsbook,classes) -> amsbook.cls
                             (amsproc,classes) -> amsproc.cls
File amsclass.dtx ended by \endinput.
Lines  processed: 5197
Comments removed: 2926
Comments  passed: 21
Codelines passed: 2062

)
warning  (pdf backend): no pages of output.
Transcript written on amsclass.log.
==239904== Invalid write of size 8
==239904==    at 0x486C013: GCTM (lgc.c:819)
==239904==    by 0x486D779: callallpendingfinalizers (lgc.c:862)
==239904==    by 0x486D779: luaC_freeallobjects (lgc.c:971)
==239904==    by 0x4877A0B: close_state (lstate.c:245)
==239904==    by 0x4E33A5: do_final_end (errors.c:257)
==239904==    by 0x45118D: main (luatex.c:609)
==239904==  Address 0x894aa40 is 16 bytes after a block of size 1,184 alloc'd
==239904==    at 0x484242B: realloc (in /gnu/store/a4xjjppiw7x0vgd2jimmzssj9i22jf5f-valgrind-3.17.0/libexec/valgrind/vgpreload_memcheck-amd64-linux.so)
==239904==    by 0x466BCD: my_luaalloc (luastuff.c:115)
==239904==    by 0x48719C2: luaM_realloc_ (lmem.c:86)
==239904==    by 0x486A122: luaD_reallocstack (ldo.c:182)
==239904==    by 0x486CC17: traversethread (lgc.c:549)
==239904==    by 0x486CC17: propagatemark (lgc.c:588)
==239904==    by 0x486CFFF: singlestep (lgc.c:1057)
==239904==    by 0x486D8BB: luaC_step (lgc.c:1137)
==239904==    by 0x48606BB: lua_pushlstring (lapi.c:485)
==239904==    by 0x56A963: load_hyphenation (texlang.c:306)
==239904==    by 0x56D0CC: undump_one_language (texlang.c:1277)
==239904==    by 0x56D0CC: undump_language_data (texlang.c:1290)
==239904==    by 0x4E0D7F: load_fmt_file (dumpdata.c:520)
==239904==    by 0x4F03DD: main_body (mainbody.c:540)
==239904==

valgrind: m_mallocfree.c:303 (get_bszB_as_is): Assertion 'bszB_lo == bszB_hi' failed.
valgrind: Heap block lo/hi size mismatch: lo = 1248, hi = 102.
This is probably caused by your program erroneously writing past the
end of a heap block and corrupting heap metadata.  If you fix any
invalid writes reported by Memcheck, this assertion failure will
probably go away.  Please try that before reporting this as a bug.

host stacktrace:
==239904==    at 0x5803F050: ??? (in /gnu/store/a4xjjppiw7x0vgd2jimmzssj9i22jf5f-valgrind-3.17.0/libexec/valgrind/memcheck-amd64-linux)
==239904==    by 0x5803F157: ??? (in /gnu/store/a4xjjppiw7x0vgd2jimmzssj9i22jf5f-valgrind-3.17.0/libexec/valgrind/memcheck-amd64-linux)
==239904==    by 0x5803F2DE: ??? (in /gnu/store/a4xjjppiw7x0vgd2jimmzssj9i22jf5f-valgrind-3.17.0/libexec/valgrind/memcheck-amd64-linux)
==239904==    by 0x58048742: ??? (in /gnu/store/a4xjjppiw7x0vgd2jimmzssj9i22jf5f-valgrind-3.17.0/libexec/valgrind/memcheck-amd64-linux)
==239904==    by 0x58037DCB: ??? (in /gnu/store/a4xjjppiw7x0vgd2jimmzssj9i22jf5f-valgrind-3.17.0/libexec/valgrind/memcheck-amd64-linux)
==239904==    by 0x58036637: ??? (in /gnu/store/a4xjjppiw7x0vgd2jimmzssj9i22jf5f-valgrind-3.17.0/libexec/valgrind/memcheck-amd64-linux)
==239904==    by 0x5803AAB2: ??? (in /gnu/store/a4xjjppiw7x0vgd2jimmzssj9i22jf5f-valgrind-3.17.0/libexec/valgrind/memcheck-amd64-linux)
==239904==    by 0x58035988: ??? (in /gnu/store/a4xjjppiw7x0vgd2jimmzssj9i22jf5f-valgrind-3.17.0/libexec/valgrind/memcheck-amd64-linux)
==239904==    by 0x100417A3ED: ???
==239904==    by 0x1002CB9F2F: ???
==239904==    by 0xBF0E: ???

sched status:
  running_tid=1

Thread 1: status = VgTs_Runnable (lwpid 239904)
==239904==    at 0x486C01B: GCTM (lgc.c:820)
==239904==    by 0x486D779: callallpendingfinalizers (lgc.c:862)
==239904==    by 0x486D779: luaC_freeallobjects (lgc.c:971)
==239904==    by 0x4877A0B: close_state (lstate.c:245)
==239904==    by 0x4E33A5: do_final_end (errors.c:257)
==239904==    by 0x45118D: main (luatex.c:609)
client stack range: [0x1FFEFB0000 0x1FFF000FFF] client SP: 0x1FFF000130
valgrind stack range: [0x1002BBA000 0x1002CB9FFF] top usage: 9624 of 1048576

Note: see also the FAQ in the source distribution.
It contains workarounds to several common problems.
In particular, if Valgrind aborted or crashed after
identifying problems in your program, there's a good chance
that fixing those problems will prevent Valgrind aborting or
crashing, especially if it happened in m_mallocfree.c.

If that doesn't help, please report this bug to: www.valgrind.org

In the bug report, send all the above text, the valgrind
version, and what OS and version you are using.  Thanks.

$ echo $?
1