From bruen...@google.com on December 02, 2010 11:54:10

For now I'll probably auto-suppress these but we should investigate whether
they are true of false positives:

I've seen this:
Error #1: UNINITIALIZED READ
Elapsed time = 0:00:00.833 in thread 123485
0x17ad5139 <ld-linux.so.2+0xb139> ld-linux.so.2!_dl_rtld_di_serinfo
??:0
0x17adbbe8 <ld-linux.so.2+0x11be8> ld-linux.so.2!_dl_make_stack_executable
??:0
0x17ad7e36 <ld-linux.so.2+0xde36> ld-linux.so.2!_dl_rtld_di_serinfo
??:0
...

and these on tests/loader on Lucid:

Error #1: UNINITIALIZED READ: reading register ecx
Elapsed time = 0:00:00.376 in thread 22939
0xf77b7b3a <ld-linux.so.2+0xbb3a> ld-linux.so.2!_dl_rtld_di_serinfo
??:0
0xf77be70e <ld-linux.so.2+0x1270e> ld-linux.so.2!_dl_make_stack_executable
??:0
0xf77ba266 <ld-linux.so.2+0xe266> ld-linux.so.2!_dl_rtld_di_serinfo
??:0
0xf77be076 <ld-linux.so.2+0x12076> ld-linux.so.2!_dl_make_stack_executable
??:0
0xf7658c0b <libdl.so.2+0xc0b> libdl.so.2!??
??:0
0xf77ba266 <ld-linux.so.2+0xe266> ld-linux.so.2!_dl_rtld_di_serinfo
??:0
0xf765909c <libdl.so.2+0x109c> libdl.so.2!dlsym
??:0
0xf7658b41 <libdl.so.2+0xb41> libdl.so.2!??
??:0
0x08048784 <loader+0x784> loader!load_and_sym
/home/bruening/drmemory/git/src/tests/loader.c:35
0x080488d6 <loader+0x8d6> loader!main
/home/bruening/drmemory/git/src/tests/loader.c:64
0xf7514bd6 <libc.so.6+0x16bd6> libc.so.6!??
??:0
0x080486d1 <loader+0x6d1> loader!_start
??:0

Error #2: UNINITIALIZED READ: reading 0xffa9cf00-0xffa9cf04 4 byte(s)
Elapsed time = 0:00:00.377 in thread 22939
0xf77b774f <ld-linux.so.2+0xb74f> ld-linux.so.2!_dl_rtld_di_serinfo
??:0
0xf77be70e <ld-linux.so.2+0x1270e> ld-linux.so.2!_dl_make_stack_executable
??:0
0xf77ba266 <ld-linux.so.2+0xe266> ld-linux.so.2!_dl_rtld_di_serinfo
??:0
0xf77be076 <ld-linux.so.2+0x12076> ld-linux.so.2!_dl_make_stack_executable
??:0
0xf7658c0b <libdl.so.2+0xc0b> libdl.so.2!??
??:0
0xf77ba266 <ld-linux.so.2+0xe266> ld-linux.so.2!_dl_rtld_di_serinfo
??:0
0xf765909c <libdl.so.2+0x109c> libdl.so.2!dlsym
??:0
0xf7658b41 <libdl.so.2+0xb41> libdl.so.2!??
??:0
0x08048784 <loader+0x784> loader!load_and_sym
/home/bruening/drmemory/git/src/tests/loader.c:35
0x080488d6 <loader+0x8d6> loader!main
/home/bruening/drmemory/git/src/tests/loader.c:64
0xf7514bd6 <libc.so.6+0x16bd6> libc.so.6!??
??:0
0x080486d1 <loader+0x6d1> loader!_start
??:0

Error #3: UNADDRESSABLE ACCESS: reading 0x080fb876-0x080fb878 2 byte(s) within 0x080fb874-0x080fb878
Elapsed time = 0:00:00.488 in thread 22939
Note: next higher malloc: 0x080fb890-0x080fbb0e
Note: prev lower malloc: 0x080fb860-0x080fb876
0xf77c2e5b <ld-linux.so.2+0x16e5b> ld-linux.so.2!calloc
??:0
0xf77b2168 <ld-linux.so.2+0x6168> ld-linux.so.2!??
??:0
0xf77b38d7 <ld-linux.so.2+0x78d7> ld-linux.so.2!??
??:0
0xf77be5db <ld-linux.so.2+0x125db> ld-linux.so.2!_dl_make_stack_executable
??:0
0xf77ba266 <ld-linux.so.2+0xe266> ld-linux.so.2!_dl_rtld_di_serinfo
??:0
0xf77be076 <ld-linux.so.2+0x12076> ld-linux.so.2!_dl_make_stack_executable
??:0
0xf7658c0b <libdl.so.2+0xc0b> libdl.so.2!??
??:0
0xf77ba266 <ld-linux.so.2+0xe266> ld-linux.so.2!_dl_rtld_di_serinfo
??:0
0xf765909c <libdl.so.2+0x109c> libdl.so.2!dlsym
??:0
0xf7658b41 <libdl.so.2+0xb41> libdl.so.2!??
??:0
0x08048784 <loader+0x784> loader!load_and_sym
/home/bruening/drmemory/git/src/tests/loader.c:35
0x080488f6 <loader+0x8f6> loader!main
/home/bruening/drmemory/git/src/tests/loader.c:67
0xf7514bd6 <libc.so.6+0x16bd6> libc.so.6!??
??:0
0x080486d1 <loader+0x6d1> loader!_start
??:0

Error #4: UNINITIALIZED READ: reading register eflags
Elapsed time = 0:00:00.649 in thread 22939
0xf77c2e69 <ld-linux.so.2+0x16e69> ld-linux.so.2!calloc
??:0
0xf77be249 <ld-linux.so.2+0x12249> ld-linux.so.2!_dl_make_stack_executable
??:0
0xf7658c0b <libdl.so.2+0xc0b> libdl.so.2!??
??:0
0xf77ba266 <ld-linux.so.2+0xe266> ld-linux.so.2!_dl_rtld_di_serinfo
??:0
0xf765909c <libdl.so.2+0x109c> libdl.so.2!dlsym
??:0
0xf7658b41 <libdl.so.2+0xb41> libdl.so.2!??
??:0
0x08048784 <loader+0x784> loader!load_and_sym
/home/bruening/drmemory/git/src/tests/loader.c:35
0x080488f6 <loader+0x8f6> loader!main
/home/bruening/drmemory/git/src/tests/loader.c:67
0xf7514bd6 <libc.so.6+0x16bd6> libc.so.6!??
??:0
0x080486d1 <loader+0x6d1> loader!_start
??:0

Error #5: UNINITIALIZED READ: reading register eflags
Elapsed time = 0:00:00.649 in thread 22939
0xf77c2e73 <ld-linux.so.2+0x16e73> ld-linux.so.2!calloc
??:0
0xf77be249 <ld-linux.so.2+0x12249> ld-linux.so.2!_dl_make_stack_executable
??:0
0xf7658c0b <libdl.so.2+0xc0b> libdl.so.2!??
??:0
0xf77ba266 <ld-linux.so.2+0xe266> ld-linux.so.2!_dl_rtld_di_serinfo
??:0
0xf765909c <libdl.so.2+0x109c> libdl.so.2!dlsym
??:0
0xf7658b41 <libdl.so.2+0xb41> libdl.so.2!??
??:0
0x08048784 <loader+0x784> loader!load_and_sym
/home/bruening/drmemory/git/src/tests/loader.c:35
0x080488f6 <loader+0x8f6> loader!main
/home/bruening/drmemory/git/src/tests/loader.c:67
0xf7514bd6 <libc.so.6+0x16bd6> libc.so.6!??
??:0
0x080486d1 <loader+0x6d1> loader!_start
??:0

Original issue: http://code.google.com/p/drmemory/issues/detail?id=79