[Valgrind-users] BerkeleyDB gets bogus errno in Valgrind

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Valgrind 1.9.6 runs much better on RH8+glibc 2.3.2/RH9, but it doesn't
appear to be perfect yet. I have reproduced this problem on both of the
mentioned platforms.

This is the expected behavior of the program.

$ python dbboguserrno.py
Traceback (most recent call last):
  File "dbboguserrno.py", line 4, in ?
    filetype = db.DB_BTREE)
  File "/usr/lib/python2.2/site-packages/rpmdb/dbshelve.py", line 69, in
open
    d.open(filename, dbname, filetype, flags, mode)
rpmdb._rpmdb.DBNoSuchFileError: (2, 'No such file or directory')

This is what happens in Valgrind. RH8 and RH9 uses BerkeleyDB 4.0.14,
with a custom compiled Python interpreter and BerkeleyDB 3.3.11 I get
"bsddb3._db.DBError: (9, 'Bad file descriptor -- nosuchfile.db: Bad file
descriptor')" errors instead.

$ valgrind -v python dbboguserrno.py
==7099== Memcheck, a.k.a. Valgrind, a memory error detector for
x86-linux.
==7099== Copyright (C) 2002, and GNU GPL'd, by Julian Seward.
==7099== Using valgrind-1.9.6, a program instrumentation system for
x86-linux.
==7099== Copyright (C) 2000-2002, and GNU GPL'd, by Julian Seward.
==7099== Startup, with flags:
==7099==    --suppressions=/usr/local/lib/valgrind/default.supp
==7099==    -v
==7099== Reading suppressions file: /usr/local/lib/valgrind/default.supp
==7099== Estimated CPU clock rate is 702 MHz
==7099==
==7099== Reading syms from /usr/bin/python
==7099==    object doesn't have any debug info
==7099== Reading syms from /lib/ld-2.3.2.so
==7099==    object doesn't have any debug info
==7099== Reading syms from /usr/local/lib/valgrind/vgskin_memcheck.so
==7099== Reading syms from /usr/local/lib/valgrind/valgrind.so
==7099== Reading syms from /lib/libdl-2.3.2.so
==7099==    object doesn't have any debug info
==7099== Reading syms from /usr/local/lib/valgrind/libpthread.so
==7099== Reading syms from /lib/libutil-2.3.2.so
==7099==    object doesn't have any debug info
==7099== Reading syms from /lib/libm-2.3.2.so
==7099==    object doesn't have a symbol table
==7099==    object doesn't have any debug info
==7099== Reading syms from /lib/libc-2.3.2.so
==7099==    object doesn't have a symbol table
==7099==    object doesn't have any debug info
==7099== Reading syms from
/usr/lib/python2.2/lib-dynload/structmodule.so
==7099== Conditional jump or move depends on uninitialised value(s)
==7099==    at 0x40008D55: elf_dynamic_do_rel.7 (in /lib/ld-2.3.2.so)
==7099==    by 0x4000942A: _dl_relocate_object_internal (in
/lib/ld-2.3.2.so)
==7099==    by 0x40377D90: (within /lib/libc-2.3.2.so)
==7099==    by 0x4000B115: _dl_catch_error_internal (in
/lib/ld-2.3.2.so)
==7099==
==7099== Conditional jump or move depends on uninitialised value(s)
==7099==    at 0x40008D59: elf_dynamic_do_rel.7 (in /lib/ld-2.3.2.so)
==7099==    by 0x4000942A: _dl_relocate_object_internal (in
/lib/ld-2.3.2.so)
==7099==    by 0x40377D90: (within /lib/libc-2.3.2.so)
==7099==    by 0x4000B115: _dl_catch_error_internal (in
/lib/ld-2.3.2.so)
==7099==
==7099== Conditional jump or move depends on uninitialised value(s)
==7099==    at 0x40009517: _dl_relocate_object_internal (in
/lib/ld-2.3.2.so)
==7099==    by 0x40377D90: (within /lib/libc-2.3.2.so)
==7099==    by 0x4000B115: _dl_catch_error_internal (in
/lib/ld-2.3.2.so)
==7099==    by 0x403774AE: _dl_open (in /lib/libc-2.3.2.so)
==7099==
==7099== Conditional jump or move depends on uninitialised value(s)
==7099==    at 0x40009565: _dl_relocate_object_internal (in
/lib/ld-2.3.2.so)
==7099==    by 0x40377D90: (within /lib/libc-2.3.2.so)
==7099==    by 0x4000B115: _dl_catch_error_internal (in
/lib/ld-2.3.2.so)
==7099==    by 0x403774AE: _dl_open (in /lib/libc-2.3.2.so)
==7099== Reading syms from
/usr/lib/python2.2/lib-dynload/_codecsmodule.so
==7099== Reading syms from
/usr/lib/python2.2/site-packages/rpmdb/_rpmdb.so
==7099== Reading syms from /usr/lib/librpm-4.1.so
==7099== Reading syms from /usr/lib/librpmdb-4.1.so
==7099== Reading syms from /usr/lib/librpmio-4.1.so
==7099== Reading syms from /usr/lib/libpopt.so.0.0.0
==7099== Reading syms from /lib/librt-2.3.2.so
==7099==    object doesn't have any debug info
==7099== Reading syms from /usr/lib/libelf.so.0.8.2
==7099== Reading syms from /usr/lib/libbz2.so.1.0.2
==7099== Reading syms from /usr/lib/python2.2/lib-dynload/cPickle.so
==7099== Reading syms from /usr/lib/python2.2/lib-dynload/cStringIO.so
Traceback (most recent call last):
  File "dbboguserrno.py", line 4, in ?
    filetype = db.DB_BTREE)
  File "/usr/lib/python2.2/site-packages/rpmdb/dbshelve.py", line 69, in
open
    d.open(filename, dbname, filetype, flags, mode)
rpmdb._rpmdb.DBAgainError: (11, 'Resource temporarily unavailable --
nosuchfile.db: Resource temporarily unavailable')
==7099==
==7099== ERROR SUMMARY: 48 errors from 4 contexts (suppressed: 2 from 1)
==7099==
==7099== 12 errors in context 1 of 4:
==7099== Conditional jump or move depends on uninitialised value(s)
==7099==    at 0x40009565: _dl_relocate_object_internal (in
/lib/ld-2.3.2.so)
==7099==    by 0x40377D90: (within /lib/libc-2.3.2.so)
==7099==    by 0x4000B115: _dl_catch_error_internal (in
/lib/ld-2.3.2.so)
==7099==    by 0x403774AE: _dl_open (in /lib/libc-2.3.2.so)
==7099==
==7099== 12 errors in context 2 of 4:
==7099== Conditional jump or move depends on uninitialised value(s)
==7099==    at 0x40009517: _dl_relocate_object_internal (in
/lib/ld-2.3.2.so)
==7099==    by 0x40377D90: (within /lib/libc-2.3.2.so)
==7099==    by 0x4000B115: _dl_catch_error_internal (in
/lib/ld-2.3.2.so)
==7099==    by 0x403774AE: _dl_open (in /lib/libc-2.3.2.so)
==7099==
==7099== 12 errors in context 3 of 4:
==7099== Conditional jump or move depends on uninitialised value(s)
==7099==    at 0x40008D59: elf_dynamic_do_rel.7 (in /lib/ld-2.3.2.so)
==7099==    by 0x4000942A: _dl_relocate_object_internal (in
/lib/ld-2.3.2.so)
==7099==    by 0x40377D90: (within /lib/libc-2.3.2.so)
==7099==    by 0x4000B115: _dl_catch_error_internal (in
/lib/ld-2.3.2.so)
==7099==
==7099== 12 errors in context 4 of 4:
==7099== Conditional jump or move depends on uninitialised value(s)
==7099==    at 0x40008D55: elf_dynamic_do_rel.7 (in /lib/ld-2.3.2.so)
==7099==    by 0x4000942A: _dl_relocate_object_internal (in
/lib/ld-2.3.2.so)
==7099==    by 0x40377D90: (within /lib/libc-2.3.2.so)
==7099==    by 0x4000B115: _dl_catch_error_internal (in
/lib/ld-2.3.2.so)
--7099--
--7099-- supp:    2 __pthread_mutex_unlock/_IO_funlockfile
==7099==
==7099== IN SUMMARY: 48 errors from 4 contexts (suppressed: 2 from 1)
==7099==
==7099== malloc/free: in use at exit: 120602 bytes in 1147 blocks.
==7099== malloc/free: 31726 allocs, 30579 frees, 2322038 bytes
allocated.
==7099==
--7099--     TT/TC: 0 tc sectors discarded.
--7099--            11223 chainings, 0 unchainings.
--7099-- translate: new     14012 (209064 -> 2646829; ratio 126:10)
--7099--            discard 0 (0 -> 0; ratio 0:10).
--7099--  dispatch: 6900000 jumps (bb entries), of which 1304733 (18%)
were unchained.
--7099--            140/88816 major/minor sched events.  17845 tt_fast
misses.
--7099-- reg-alloc: 1950 t-req-spill, 497014+11920 orig+spill uis, 70141
total-reg-r.
--7099--    sanity: 141 cheap, 6 expensive checks.
--7099--    ccalls: 51904 C calls, 58% saves+restores avoided (178738
bytes)
--7099--            71568 args, avg 0.87 setup instrs each (17770 bytes)
--7099--            0% clear the stack (155712 bytes)
--7099--            19332 retvals, 34% of reg-reg movs avoided (12842
bytes)

-- 
Troels Walsted Hansen