[Valgrind-users] Problem with REDIR

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Hi=20
I am trying to use Valgrind for my executable..
The following is the snippet of the error it gives=20
=20
 --2983-- Reading syms from /lib64/libc-2.3.6.so (0x123F6000)
 --2983-- REDIR: 0x12469B60 (memset) redirected to 0x11B21D10 (memset)
 --2983-- REDIR: 0x1246A270 (memcpy) redirected to 0x11B21DF0 (memcpy)
 --2983-- REDIR: 0x12468B90 (rindex) redirected to 0x11B21840 (rindex)
 --2983-- REDIR: 0x12468740 (strlen) redirected to 0x11B219F0 (strlen)
 --2983-- REDIR: 0x1201E460 (operator new(unsigned long)) redirected to
0x11B201E8 (operator new(unsigned long))
 --2983-- REDIR: 0x12463210 (malloc) redirected to 0x11B1FE1D (malloc)
 --2983-- REDIR: 0x124692D0 (memchr) redirected to 0x11B21B70 (memchr)
 --2983-- REDIR: 0x12468000 (index) redirected to 0x11B21930 (index)
 --2983-- REDIR: 0x1246AB20 (rawmemchr) redirected to 0x11B21DD0
(rawmemchr)
 --2983-- REDIR: 0x12461320 (free) redirected to 0x11B209B5 (free)
 --2983-- REDIR: 0x12469F80 (stpcpy) redirected to 0x11B220F0 (stpcpy)
 --2983-- REDIR: 0x1201E560 (operator new[](unsigned long)) redirected
to 0x11B20656 (operator new[](unsigned long))
 --2983-- REDIR: 0x12462E90 (calloc) redirected to 0x11B21180 (calloc)
 --2983-- REDIR: 0x124689C0 (strncmp) redirected to 0x11B21A50 (strncmp)
 --2983-- REDIR: 0xFFFFFFFFFF600000 (???) redirected to 0x7002973B (???)
 --2983-- REDIR: 0x12468AD0 (strncpy) redirected to 0x11B22370 (strncpy)
 --2983-- REDIR: 0x124681F0 (strcpy) redirected to 0x11B22030 (strcpy)
 --2983-- REDIR: 0x124681B0 (strcmp) redirected to 0x11B21AD0 (strcmp)
 =3D=3D2983=3D=3D Syscall param pipe(filedes) points to unaddressable =
byte(s)
 =3D=3D2983=3D=3D    at 0x124B2DE7: pipe (in /lib64/libc-2.3.6.so)
 =3D=3D2983=3D=3D    by 0x43D0B1: MPIDU_Sock_create_set (sock_set.i:70)
 =3D=3D2983=3D=3D    by 0x428B00: MPIDI_CH3I_Progress_init =
(ch3_progress.c:285)
 =3D=3D2983=3D=3D    by 0x4284D4: MPIDI_CH3_Init (ch3_init.c:34)
 =3D=3D2983=3D=3D    by 0x411806: MPID_Init (mpid_init.c:79)
 =3D=3D2983=3D=3D    by 0x40FFA0: MPIR_Init_thread (initthread.c:220)
 =3D=3D2983=3D=3D    by 0x4100EF: MPI_Init_thread (initthread.c:342)
 =3D=3D2983=3D=3D    by 0x40BBD3: main (main.cpp:58)
 =3D=3D2983=3D=3D  Address 0x1264AB28 is 0 bytes after a block of size =
80
alloc'd
 =3D=3D2983=3D=3D    at 0x11B1FE96: malloc (in
/usr/lib64/valgrind/vgpreload_memcheck.so)
 =3D=3D2983=3D=3D    by 0x43D022: MPIDU_Sock_create_set (sock_set.i:25)
 =3D=3D2983=3D=3D    by 0x428B00: MPIDI_CH3I_Progress_init =
(ch3_progress.c:285)
 =3D=3D2983=3D=3D    by 0x4284D4: MPIDI_CH3_Init (ch3_init.c:34)
 =3D=3D2983=3D=3D    by 0x411806: MPID_Init (mpid_init.c:79)
 =3D=3D2983=3D=3D    by 0x40FFA0: MPIR_Init_thread (initthread.c:220)
 =3D=3D2983=3D=3D    by 0x4100EF: MPI_Init_thread (initthread.c:342)
 =3D=3D2983=3D=3D    by 0x40BBD3: main (main.cpp:58)
 --2983-- REDIR: 0x1246ABF0 (strchrnul) redirected to 0x11B21DA0
(strchrnul)

It then complains about=20
 --2983-- WARNING: unhandled syscall: 141
 =3D=3D2983=3D=3D    at 0x124B8657: setpriority (in =
/lib64/libc-2.3.6.so)
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and finally it gives SIGSEGV and exits..
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setpriority is present in the coregrind syscall implementations.
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The same executable runs fine without Valgrind..
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Please let me know on why do we get these  REDIR (???) messages.
=20
=20
Thanks and Regards,
Rakesh