Hi, Are you being affected by this rtld behaviour:
https://lists.freebsd.org/pipermail/freebsd-hackers/2016-July/049769.html <https://lists.freebsd.org/pipermail/freebsd-hackers/2016-July/049769.html> https://lists.freebsd.org/pipermail/freebsd-stable/2015-July/082751.html <https://lists.freebsd.org/pipermail/freebsd-stable/2015-July/082751.html> (I still find this a bit scary.) Regards, Jan. > On 27 Jan 2017, at 19:31, Don Lewis <truck...@freebsd.org> wrote: > > I've been attempting to get OpenOffice to build properly in a > clang400-import poudriere jail and have run into a mystery. The build > procedure creates a c++ executable "idlc", which is used to build other > stuff. The new operator has been overrriden to call a custom memory > allocator, which I have configured to call the system version of > malloc(). > > At some point idlc crashes because it has allocated a 16 byte structure > and the compiler is using "movaps %xmm0,(%rax)" to initialize it, which > requires 16 byte alignment. Unfortunately this structure is only 8 byte > aligned, causing a bus error. This shouldn't be happening because our > system malloc() always seems to do the proper alignment. It appears > that intead of calling the version of malloc() in libc, the simple > version of malloc() built into rtld is being called instead. > > GNU gdb 6.1.1 [FreeBSD] > Copyright 2004 Free Software Foundation, Inc. > GDB is free software, covered by the GNU General Public License, and you are > welcome to change it and/or distribute copies of it under certain conditions. > Type "show copying" to see the conditions. > There is absolutely no warranty for GDB. Type "show warranty" for details. > This GDB was configured as "amd64-marcel-freebsd"... > (gdb) break main > Breakpoint 1 at 0x43b1f6: file idlcmain.cxx, line 34. > (gdb) run @/tmp/r > Starting program: > /wrkdirs/usr/ports/editors/openoffice-devel/work/aoo-4.2.0/main/solver/420/unxfbsdx.pro/bin/idlc > @/tmp/r > [New LWP 101304] > [New Thread 802616000 (LWP 101304/idlc)] > [Switching to Thread 802616000 (LWP 101304/idlc)] > > Breakpoint 1, main (argc=2, argv=0x7fffffffb278) at idlcmain.cxx:34 > 34 SAL_IMPLEMENT_MAIN_WITH_ARGS(argc, argv) > (gdb) break malloc > Breakpoint 2 at 0x8006a5f01: file > /var/poudriere/jails/clang400amd64/usr/src/libexec/rtld-elf/malloc.c, line > 163. > (gdb) cont > Continuing. > Trace 12474/1: "Min Prioriy for policy '2' == '0' > " > Trace 12474/1: "Max Prioriy for policy '2' == '103' > " > /wrkdirs/usr/ports/editors/openoffice-devel/work/aoo-4.2.0/main/solver/420/unxfbsdx.pro/bin/idlc: > compiling 1 source files ... > Compiling: > /wrkdirs/usr/ports/editors/openoffice-devel/work/aoo-4.2.0/main/offapi/com/sun/star/i18n/KParseTokens.idl > > Breakpoint 2, malloc (nbytes=343) > at /var/poudriere/jails/clang400amd64/usr/src/libexec/rtld-elf/malloc.c:163 > 163 /var/poudriere/jails/clang400amd64/usr/src/libexec/rtld-elf/malloc.c: > No such file or directory. > in /var/poudriere/jails/clang400amd64/usr/src/libexec/rtld-elf/malloc.c > Current language: auto; currently minimal > (gdb) cont > Continuing. > > Breakpoint 2, malloc (nbytes=32) > at /var/poudriere/jails/clang400amd64/usr/src/libexec/rtld-elf/malloc.c:163 > 163 in /var/poudriere/jails/clang400amd64/usr/src/libexec/rtld-elf/malloc.c > (gdb) cont > Continuing. > Trace 13112/2: "ChildStatusProc : starting > '/wrkdirs/usr/ports/editors/openoffice-devel/work/aoo-4.2.0/main/solver/420/unxfbsdx.pro/bin/ucpp'" > [New Thread 802616500 (LWP 100249/idlc)] > [Switching to Thread 802616500 (LWP 100249/idlc)] > > Breakpoint 2, malloc (nbytes=19) > at /var/poudriere/jails/clang400amd64/usr/src/libexec/rtld-elf/malloc.c:163 > 163 in /var/poudriere/jails/clang400amd64/usr/src/libexec/rtld-elf/malloc.c > (gdb) cont > Continuing. > > Breakpoint 2, malloc (nbytes=34) > at /var/poudriere/jails/clang400amd64/usr/src/libexec/rtld-elf/malloc.c:163 > 163 in /var/poudriere/jails/clang400amd64/usr/src/libexec/rtld-elf/malloc.c > (gdb) cont > Continuing. > > Breakpoint 2, malloc (nbytes=16) > at /var/poudriere/jails/clang400amd64/usr/src/libexec/rtld-elf/malloc.c:163 > 163 in /var/poudriere/jails/clang400amd64/usr/src/libexec/rtld-elf/malloc.c > (gdb) cont > Continuing. > > Breakpoint 2, malloc (nbytes=16) > at /var/poudriere/jails/clang400amd64/usr/src/libexec/rtld-elf/malloc.c:163 > 163 in /var/poudriere/jails/clang400amd64/usr/src/libexec/rtld-elf/malloc.c > (gdb) cont > Continuing. > > Breakpoint 2, malloc (nbytes=16) > at /var/poudriere/jails/clang400amd64/usr/src/libexec/rtld-elf/malloc.c:163 > 163 in /var/poudriere/jails/clang400amd64/usr/src/libexec/rtld-elf/malloc.c > (gdb) cont > Continuing. > > Breakpoint 2, malloc (nbytes=16) > at /var/poudriere/jails/clang400amd64/usr/src/libexec/rtld-elf/malloc.c:163 > 163 in /var/poudriere/jails/clang400amd64/usr/src/libexec/rtld-elf/malloc.c > (gdb) cont > Continuing. > sizeof(AstExprValue)=16 > > Program received signal SIGBUS, Bus error. > [Switching to Thread 802616000 (LWP 101304/idlc)] > 0x0000000000478cc2 in AstExpression::eval_bit_op (this=0x802633dc8, > ek=EK_const) at astexpression.cxx:1001 > 1001 std::auto_ptr< AstExprValue > retval(new AstExprValue()); > > > idlc is linked to libc.so: > > /wrkdirs/usr/ports/editors/openoffice-devel/work/aoo-4.2.0/main/solver/420/unxfbsdx.pro/bin/idlc: > libreg.so.3 => > /wrkdirs/usr/ports/editors/openoffice-devel/work/aoo-4.2.0/main/solver/420/unxfbsdx.pro/lib/libreg.so.3 > (0x8008b9000) > libuno_sal.so.3 => > /wrkdirs/usr/ports/editors/openoffice-devel/work/aoo-4.2.0/main/solver/420/unxfbsdx.pro/lib/libuno_sal.so.3 > (0x800c00000) > libuno_salhelpergcc3.so.3 => > /wrkdirs/usr/ports/editors/openoffice-devel/work/aoo-4.2.0/main/solver/420/unxfbsdx.pro/lib/libuno_salhelpergcc3.so.3 > (0x801040000) > libm.so.5 => /lib/libm.so.5 (0x801244000) > libc++.so.1 => /usr/lib/libc++.so.1 (0x80146e000) > libcxxrt.so.1 => /lib/libcxxrt.so.1 (0x801735000) > libgcc_s.so.1 => /lib/libgcc_s.so.1 (0x801953000) > libthr.so.3 => /lib/libthr.so.3 (0x801b69000) > libc.so.7 => /lib/libc.so.7 (0x801d91000) > libstore.so.3 => > /wrkdirs/usr/ports/editors/openoffice-devel/work/aoo-4.2.0/main/solver/420/unxfbsdx.pro/lib/libstore.so.3 > (0x802152000) > > > If I create a simple test program that calls malloc() and set a > breakpoint in malloc(), the breakpoint gets set in the rtld version, but > the the libc version of malloc is what gets called. > > What the heck is going on here, and how can I fix it? 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