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* [Bug malloc/28256] New: Conditional jump or move depends on uninitialised value(s) in __GI___tunables_init
@ 2021-08-21 13:47 rjones at redhat dot com
2021-08-22 13:08 ` [Bug malloc/28256] " rjones at redhat dot com
` (3 more replies)
0 siblings, 4 replies; 5+ messages in thread
From: rjones at redhat dot com @ 2021-08-21 13:47 UTC (permalink / raw)
To: glibc-bugs
https://sourceware.org/bugzilla/show_bug.cgi?id=28256
Bug ID: 28256
Summary: Conditional jump or move depends on uninitialised
value(s) in __GI___tunables_init
Product: glibc
Version: 2.34
Status: NEW
Severity: normal
Priority: P2
Component: malloc
Assignee: unassigned at sourceware dot org
Reporter: rjones at redhat dot com
Target Milestone: ---
glibc-2.34-1.fc35.x86_64
I'm getting this when I run any program under valgrind with glibc tunables:
$ LD_PRELOAD=/usr/lib64/libc_malloc_debug.so.0
GLIBC_TUNABLES=glibc.malloc.check=1 valgrind ls
==2958662== Memcheck, a memory error detector
==2958662== Copyright (C) 2002-2017, and GNU GPL'd, by Julian Seward et al.
==2958662== Using Valgrind-3.17.0 and LibVEX; rerun with -h for copyright info
==2958662== Command: ls
==2958662==
==2958662== Conditional jump or move depends on uninitialised value(s)
==2958662== at 0x4019615: parse_tunables (dl-tunables.c:211)
==2958662== by 0x4019615: __GI___tunables_init (dl-tunables.c:296)
==2958662== by 0x401D3B1: _dl_sysdep_start (dl-sysdep.c:232)
==2958662== by 0x400209E: _dl_start_final (rtld.c:490)
==2958662== by 0x400209E: _dl_start (rtld.c:583)
==2958662== by 0x4001097: ??? (in /usr/lib64/ld-linux-x86-64.so.2)
==2958662==
==2958662== Conditional jump or move depends on uninitialised value(s)
==2958662== at 0x4019602: parse_tunables (dl-tunables.c:211)
==2958662== by 0x4019602: __GI___tunables_init (dl-tunables.c:296)
==2958662== by 0x401D3B1: _dl_sysdep_start (dl-sysdep.c:232)
==2958662== by 0x400209E: _dl_start_final (rtld.c:490)
==2958662== by 0x400209E: _dl_start (rtld.c:583)
==2958662== by 0x4001097: ??? (in /usr/lib64/ld-linux-x86-64.so.2)
==2958662==
==2958662== Conditional jump or move depends on uninitialised value(s)
==2958662== at 0x401966C: parse_tunables (dl-tunables.c:255)
==2958662== by 0x401966C: __GI___tunables_init (dl-tunables.c:296)
==2958662== by 0x401D3B1: _dl_sysdep_start (dl-sysdep.c:232)
==2958662== by 0x400209E: _dl_start_final (rtld.c:490)
==2958662== by 0x400209E: _dl_start (rtld.c:583)
==2958662== by 0x4001097: ??? (in /usr/lib64/ld-linux-x86-64.so.2)
==2958662==
==2958662== Conditional jump or move depends on uninitialised value(s)
==2958662== at 0x40194D2: parse_tunables (dl-tunables.c:185)
==2958662== by 0x40194D2: __GI___tunables_init (dl-tunables.c:296)
==2958662== by 0x401D3B1: _dl_sysdep_start (dl-sysdep.c:232)
==2958662== by 0x400209E: _dl_start_final (rtld.c:490)
==2958662== by 0x400209E: _dl_start (rtld.c:583)
==2958662== by 0x4001097: ??? (in /usr/lib64/ld-linux-x86-64.so.2)
==2958662==
==2958662== Conditional jump or move depends on uninitialised value(s)
==2958662== at 0x40194DA: parse_tunables (dl-tunables.c:185)
==2958662== by 0x40194DA: __GI___tunables_init (dl-tunables.c:296)
==2958662== by 0x401D3B1: _dl_sysdep_start (dl-sysdep.c:232)
==2958662== by 0x400209E: _dl_start_final (rtld.c:490)
==2958662== by 0x400209E: _dl_start (rtld.c:583)
==2958662== by 0x4001097: ??? (in /usr/lib64/ld-linux-x86-64.so.2)
==2958662==
aclocal.m4 config.log include missing server
autom4te.cache config.status install-sh nbdkit stamp-h1
bash config.sub libtool nbdkit-wrapper.o test-driver
BENCHMARKING configure LICENSE OTHER_PLUGINS tests
common configure.ac localconfigure plugins TODO
common-rules.mk depcomp ltmain.sh podwrapper.pl TODOTODO
compile docs m4 podwrapper.pl.in valgrind
config.guess filters Makefile README wrapper.c
config.h fuzzing Makefile.am scripts
config.h.in html Makefile.in SECURITY
==2958662==
==2958662== HEAP SUMMARY:
==2958662== in use at exit: 25,538 bytes in 55 blocks
==2958662== total heap usage: 90 allocs, 35 frees, 63,479 bytes allocated
==2958662==
==2958662== LEAK SUMMARY:
==2958662== definitely lost: 0 bytes in 0 blocks
==2958662== indirectly lost: 0 bytes in 0 blocks
==2958662== possibly lost: 0 bytes in 0 blocks
==2958662== still reachable: 25,538 bytes in 55 blocks
==2958662== suppressed: 0 bytes in 0 blocks
==2958662== Rerun with --leak-check=full to see details of leaked memory
==2958662==
==2958662== Use --track-origins=yes to see where uninitialised values come from
==2958662== For lists of detected and suppressed errors, rerun with: -s
==2958662== ERROR SUMMARY: 5 errors from 5 contexts (suppressed: 0 from 0)
In a slightly different test that I can't easily make a reproducer for
I also saw this which is slightly different and might indicate a
similar-but-different bug:
==2944389== Conditional jump or move depends on uninitialised value(s)
==2944389== at 0x8147602: __GI___tunables_init (dl-tunables.c:211)
==2944389== by 0x814B3B1: _dl_sysdep_start (dl-sysdep.c:232)
==2944389== by 0x813009E: _dl_start (rtld.c:490)
==2944389== by 0x812F097: ??? (in /usr/lib64/ld-linux-x86-64.so.2)
==2944389== by 0x1: ???
==2944389== by 0x1FFEFFBF5A: ???
==2944389== by 0x1FFEFFBF7E: ???
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^ permalink raw reply [flat|nested] 5+ messages in thread
end of thread, other threads:[~2023-08-30 16:21 UTC | newest]
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-- links below jump to the message on this page --
2021-08-21 13:47 [Bug malloc/28256] New: Conditional jump or move depends on uninitialised value(s) in __GI___tunables_init rjones at redhat dot com
2021-08-22 13:08 ` [Bug malloc/28256] " rjones at redhat dot com
2021-08-23 8:58 ` fweimer at redhat dot com
2021-08-23 13:33 ` schwab@linux-m68k.org
2023-08-30 16:21 ` mark at klomp dot org
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