On Wed, 2016-02-03 at 21:33 +0100, Philippe Waroquiers wrote: > On Wed, 2016-02-03 at 20:45 +0100, David Hallas wrote: > > > valgrind: m_deduppoolalloc.c:258 (vgPlain_allocEltDedupPA): Assertion > > 'eltSzB <= ddpa->poolSzB' failed. > > I am running on a 64bit Linux system, and the binary is compiled using > > clang-3.7. > > Can anyone give some pointers as to what might be wrong? > This assert probably indicates there is a bug in valgrind triggered > by unexpected (or incorrect?) data in the executable (e.g. debug info). > > Normally, for such asserts, a guest and host stack traces are produced. > Without these stacktraces, not much chance to guess what is wrong. > > Assuming this is caused by debuginfo, you could try to run > with more tracing, e.g. > -v -v -v -d -d -d > and one or more of > > --trace-symtab=no|yes show symbol table details? [no] > --trace-symtab-patt=<patt> limit debuginfo tracing to obj name <patt> > --trace-cfi=no|yes show call-frame-info details? [no] > --debug-dump=syms mimic /usr/bin/readelf --syms > --debug-dump=line mimic /usr/bin/readelf --debug-dump=line > --debug-dump=frames mimic /usr/bin/readelf --debug-dump=frames
The assert might be caused by the debuginfo containing a string bigger than SEGINFO_STRPOOLSIZE (64Kb). If that is the case, we could make the allocEltDedupPA function allow for bigger strings, but would be nice to first verify this is effectively a big string, and also then understand why clang generates strings > 64Kb. So, more info is needed to confirm what is the problem (i.e. either tracing and/or the crash stack traces) Philippe ------------------------------------------------------------------------------ Site24x7 APM Insight: Get Deep Visibility into Application Performance APM + Mobile APM + RUM: Monitor 3 App instances at just $35/Month Monitor end-to-end web transactions and take corrective actions now Troubleshoot faster and improve end-user experience. Signup Now! http://pubads.g.doubleclick.net/gampad/clk?id=272487151&iu=/4140 _______________________________________________ Valgrind-users mailing list Valgrind-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/valgrind-users
