Re: (ITS#7713) Segmentation fault if the pagesize of the Operating system is not equal to 4096.
by sumantk2＠linux.vnet.ibm.com
On 10/01/2013 12:46 PM, Howard Chu wrote:
> sumantk2(a)linux.vnet.ibm.com wrote:
>> Full_Name: sumanth k
>> Version: 2.4.35 to any recent version with mdb support
>> OS: Linux - ppc64
>> URL: ftp://ftp.openldap.org/incoming/
>> Submission from: (NULL) (122.248.161.59)
>>
>>
>> The pagesize of Linux for x86 and s390x architecture is 4096. Whereas
>> in Powerpc
>> <ppc64> , the pagesize is by default 65536. So when the pagesize is
>> not equal to
>> 4096, the segmentation fault occurs. So tried to compile the
>> powerpc64 kernel
>> with page size of 4096 and the problem disappears and runs smoothly.
>> But by
>> default the powerpc64 architecture runs with 65536 pagesize . So
>> there is some
>> problem in mdb_env_open2() function in mdb.c when the pagesize is not
>> equal to
>> 4096.
>
> Thanks for the report. I believe you should be able to instead change
> the definition of MDB_PAGESIZE to 65536, instead of forcing your
> machine to use 4096 byte pages.
>
Yes i have tried changing MDB_PAGESIZE to 65536 before reporting this
and the segmentation fault still occured.
> There are other problems though; we use an unsigned short for page
> offsets. I'm not sure the assert that you tripped will succeed in this
> case.
>
Will try changing datatype and see ..But not sure whether it affects
some other part of the code.
>>
>> These are my observations :
>>
>>
>> Compiled the source with -O0 optimization .
>> /home/openldap-2.4.36/tests/../servers/slapd/slapd -s0 -f
>> /home/openldap-2.4.36/tests/testrun/slapd.1.conf -h
>> ldap://localhost:9011/ -d
>> 0x4105
>>
>> ./scripts/test000-rootdse: line 31: 19059 Aborted
>> (core dumped)
>> $SLAPD -f $CONF1 -h $URI1 -d $LVL $TIMING > $LOG1 2>&1
>>
>> Core file :
>> bash-4.2# cat .gdbinit
>> b mdb_db_open
>> b mdb_env_open
>> b mdb_env_open2
>> b mdb_txn_begin
>> b mdb_txn_renew0
>> b mdb_dbi_open
>> b mdb_cursor_init
>> b mdb_cursor_set
>> b mdb_page_search
>> b mdb_page_get
>> b mdb_page_search_root
>> r -s0 -f /home/openldap-2.4.36/tests/testrun/slapd.1.conf -h
>> ldap://localhost:9011/ -d 0x4105
>>
>>
>> # Core was generated by
>> `/home/openldap-2.4.36/tests/../servers/slapd/slapd -s0
>> -f /home/openldap-2.4.36'.
>> Program terminated with signal 6, Aborted.
>> #0 0x00001fffff7adb70 in .raise () from /lib64/libc.so.6
>> Missing separate debuginfos, use: debuginfo-install
>> cyrus-sasl-lib-2.1.26-8.mcp8_0.2.ppc64
>> cyrus-sasl-md5-2.1.26-8.mcp8_0.2.ppc64
>> glibc-2.17-4.mcp8_0.6.ppc64 keyutils-libs-1.5.5-4.mcp8_0.2.ppc64
>> krb5-libs-1.11.3-1.mcp8_0.2.ppc64 libcom_err-1.42.7-2.mcp8_0.1.ppc64
>> libdb-5.3.21-8.mcp8_0.4.ppc64 libselinux-2.1.13-15.mcp8_0.3.ppc64
>> nss-softokn-freebl-3.14.3-1.mcp8_0.2.ppc64
>> openssl-libs-1.0.1e-4.mcp8_0.1.ppc64
>> pcre-8.32-7.mcp8_0.2.ppc64 zlib-1.2.7-10.mcp8_0.1.ppc64
>> (gdb) where
>> #0 0x00001fffff7adb70 in .raise () from /lib64/libc.so.6
>> #1 0x00001fffff7afb64 in .abort () from /lib64/libc.so.6
>> #2 0x00001fffff7a455c in .__assert_fail_base () from /lib64/libc.so.6
>> #3 0x00001fffff7a464c in .__assert_fail () from /lib64/libc.so.6
>> #4 0x00000000101498cc in mdb_node_add (mc=0x3fffe89a7d40, indx=0,
>> key=0x3fffe89a7d20, data=0x3fffe89a7d30, pgno=0, flags=2) at
>> ./../../../libraries/liblmdb/mdb.c:6160
>> #5 0x000000001014882c in mdb_cursor_put (mc=0x3fffe89a7d40,
>> key=0x3fffe89a7d20,
>> data=0x3fffe89a7d30, flags=2) at ./../../../libraries/liblmdb/mdb.c:5877
>> #6 0x00000000101516a8 in mdb_dbi_open (txn=0x1000f675980,
>> name=0x1027b9c8
>> "ad2i", flags=262152, dbi=0x1fffff0800a0) at
>> ./../../../libraries/liblmdb/mdb.c:7902
>> #7 0x0000000010139cd4 in mdb_db_open (be=0x1000f4f83a0,
>> cr=0x3fffe89a81c0) at
>> init.c:207
>> #8 0x0000000010050e34 in backend_startup_one (be=0x1000f4f83a0,
>> cr=0x3fffe89a81c0) at backend.c:224
>> #9 0x0000000010051588 in backend_startup (be=0x1000f4f83a0) at
>> backend.c:325
>> #10 0x0000000010089a7c in slap_startup (be=0x0) at init.c:219
>> #11 0x000000001000a9c8 in main (argc=8, argv=0x3fffe89a8958) at
>> main.c:991
>>
>>
>>
>> Here is the error message :
>>
>> #/home/openldap-2.4.36/tests/../servers/slapd/slapd -s0 -f
>> /home/openldap-2.4.36/tests/testrun/slapd.1.conf -h
>> ldap://localhost:9011/ -d
>> 0x4105
>> (...some messages...)
>> 524a2fe1 mdb_db_open: database "o=OpenLDAP Project,l=Internet":
>> dbenv_open(/home/openldap-2.4.36/tests/testrun/db.1.a).
>> slapd: ./../../../libraries/liblmdb/mdb.c:6160: mdb_node_add: Assertion
>> `mp->mp_pb.pb.pb_upper >= mp->mp_pb.pb.pb_lower' failed. < === fails
>> in assert()
>> ;
>> Aborted (core dumped)
>>
>>
>>
>> Some of my observation :
>>
>> in this file libraries/liblmdb/mdb.c
>> in X86 : rc = mdb_cursor_set(&mc, &key, &data, MDB_SET, &exact); the
>> value of
>> rc = MD_SUCCESS, but for ppc64 it is MDB_NOTFOUND. This is due to the
>> fact that
>> md_root != 2
>>
>> The value of md_root=2 for env->me_metas[1]->mm_dbs in X86 , but some
>> huge value
>> in ppc64. The value of md_pad = 4096 in x86 and 65536 in ppc64 .
>>
>> in x86:
>>
>> Breakpoint 2, mdb_txn_begin (env=0x9c5050, parent=0x0, flags=0,
>> ret=0x7fffffffdf98) at ./../../../libraries/liblmdb/mdb.c:2219
>> 2219 int rc, size, tsize = sizeof(MDB_txn);
>> (gdb) p env->me_metas[1]->mm_dbs
>> $1 = {{md_pad = 4096, md_flags = 8, md_depth = 0, md_branch_pages = 0,
>> md_leaf_pages = 0, md_overflow_pages = 0, md_entries = 0, md_root =
>> 18446744073709551615}, {md_pad = 0, md_flags = 0,
>> md_depth = 1, md_branch_pages = 0, md_leaf_pages = 1,
>> md_overflow_pages = 0,
>> md_entries = 4, md_root = 2}}
>> (gdb) p env->me_metas[0]->mm_dbs
>> $2 = {{md_pad = 4096, md_flags = 8, md_depth = 0, md_branch_pages = 0,
>> md_leaf_pages = 0, md_overflow_pages = 0, md_entries = 0, md_root =
>> 18446744073709551615}, {md_pad = 0, md_flags = 0,
>> md_depth = 0, md_branch_pages = 0, md_leaf_pages = 0,
>> md_overflow_pages = 0,
>> md_entries = 0, md_root = 18446744073709551615}}
>>
>>
>> in ppc64:
>>
>> Breakpoint 2, mdb_txn_begin (env=0x10493ef0, parent=0x0, flags=0,
>> ret=0x3fffffffe590) at ./../../../libraries/liblmdb/mdb.c:2219
>> 2219 int rc, size, tsize = sizeof(MDB_txn);
>> (gdb) p env->me_metas[0]->mm_dbs
>> $1 = {{md_pad = 65536, md_flags = 8, md_depth = 0, md_branch_pages = 0,
>> md_leaf_pages = 0, md_overflow_pages = 0, md_entries = 0, md_root =
>> 18446744073709551615}, {md_pad = 0, md_flags = 0,
>> md_depth = 0, md_branch_pages = 0, md_leaf_pages = 0,
>> md_overflow_pages = 0,
>> md_entries = 0, md_root = 18446744073709551615}}
>> (gdb) p env->me_metas[1]->mm_dbs
>> $2 = {{md_pad = 65536, md_flags = 8, md_depth = 0, md_branch_pages = 0,
>> md_leaf_pages = 0, md_overflow_pages = 0, md_entries = 0, md_root =
>> 18446744073709551615}, {md_pad = 0, md_flags = 0,
>> md_depth = 0, md_branch_pages = 0, md_leaf_pages = 0,
>> md_overflow_pages = 0,
>> md_entries = 0, md_root = 18446744073709551615}}
>>
>>
>>
>>
>> # From further investigation , the value of env->me_metas[1] is
>> initialized in
>> mdb_env_open2() at :
>>
>> p = (MDB_page *)env->me_map;
>> env->me_metas[0] = METADATA(p);
>> env->me_metas[1] = (MDB_meta *)((char *)env->me_metas[0] +
>> meta.mm_psize);
>>
>> Here the meta.mm_psize in ppc64 is 65536 , hence there is some
>> problem.. If the
>> value of meta.mm_psize is 4096 , then everything works fine.
>>
>>
>> As i dont have deep knowledge in openldap ,some help is needed.
>>
>> Thank you,
>> Sumanth K
>>
>>
>
>
9 years, 11 months
Re: (ITS#7710) contextCSN values not updated by internal non-replicated ops
by hyc＠symas.com
Michael Ströder wrote:
> hyc(a)symas.com wrote:
>>> Configuration:
>>> - MMR with 3 nodes and normal syncrepl.
>>> - slapo-memberof used to populate/update attribute 'memberOf' in user entries.
>>>
>>> If a group entry is modified and slapo-memberof updates the attribute 'memberOf'
>>> in the member's entry the contextCSN value of the server where the LDAP request
>>> was sent to is not updated on the other MMR replicas.
>>
>> I don't understand this sentence, can you rephrase?
>
> I looked into this a bit more:
>
> We have three MMR nodes, let's simply enumerate them as 1, 2 and 3.
>
> When modifying a group entry on 1 'memberOf' gets *locally* updated and the
> contextCSN value for server 1 gets also updated. So far so good.
>
> Now the group modification are pulled by 2 and 3 and slapo-memberof installed
> there *locally* updates attr memberOf and the *local* contextCSN value for 2
> and 3 are updated with new timestamp. But the updated contextCSN values of 2
> and 3 never get replicated to the other instances! So my monitoring check
> shows a long-lasting replication gap. After next server restart all contextCSN
> values get updated.
>
>> Also see ITS#6915.
>
> Sorry, glancing over ITS#6915 I don't understand what it means in this context.
The point of #6915 is that internal ops are not supposed to affect the
contextCSN. If you're seeing new contextCSNs on 2 and 3 solely due to
slapo-memberof then some part of #6915 is still broken. We'll need a duplicate
setup to reproduce this...
--
-- Howard Chu
CTO, Symas Corp. http://www.symas.com
Director, Highland Sun http://highlandsun.com/hyc/
Chief Architect, OpenLDAP http://www.openldap.org/project/
9 years, 11 months
Re: (ITS#7710) contextCSN values not updated by internal non-replicated ops
by michael＠stroeder.com
hyc(a)symas.com wrote:
>> Configuration:
>> - MMR with 3 nodes and normal syncrepl.
>> - slapo-memberof used to populate/update attribute 'memberOf' in user entries.
>>
>> If a group entry is modified and slapo-memberof updates the attribute 'memberOf'
>> in the member's entry the contextCSN value of the server where the LDAP request
>> was sent to is not updated on the other MMR replicas.
>
> I don't understand this sentence, can you rephrase?
I looked into this a bit more:
We have three MMR nodes, let's simply enumerate them as 1, 2 and 3.
When modifying a group entry on 1 'memberOf' gets *locally* updated and the
contextCSN value for server 1 gets also updated. So far so good.
Now the group modification are pulled by 2 and 3 and slapo-memberof installed
there *locally* updates attr memberOf and the *local* contextCSN value for 2
and 3 are updated with new timestamp. But the updated contextCSN values of 2
and 3 never get replicated to the other instances! So my monitoring check
shows a long-lasting replication gap. After next server restart all contextCSN
values get updated.
> Also see ITS#6915.
Sorry, glancing over ITS#6915 I don't understand what it means in this context.
Ciao, Michael.
9 years, 11 months
Re: (ITS#7713) Segmentation fault if the pagesize of the Operating system is not equal to 4096.
by hyc＠symas.com
sumantk2(a)linux.vnet.ibm.com wrote:
> Full_Name: sumanth k
> Version: 2.4.35 to any recent version with mdb support
> OS: Linux - ppc64
> URL: ftp://ftp.openldap.org/incoming/
> Submission from: (NULL) (122.248.161.59)
>
>
> The pagesize of Linux for x86 and s390x architecture is 4096. Whereas in Powerpc
> <ppc64> , the pagesize is by default 65536. So when the pagesize is not equal to
> 4096, the segmentation fault occurs. So tried to compile the powerpc64 kernel
> with page size of 4096 and the problem disappears and runs smoothly. But by
> default the powerpc64 architecture runs with 65536 pagesize . So there is some
> problem in mdb_env_open2() function in mdb.c when the pagesize is not equal to
> 4096.
Thanks for the report. I believe you should be able to instead change the
definition of MDB_PAGESIZE to 65536, instead of forcing your machine to use
4096 byte pages.
There are other problems though; we use an unsigned short for page offsets.
I'm not sure the assert that you tripped will succeed in this case.
>
> These are my observations :
>
>
> Compiled the source with -O0 optimization .
> /home/openldap-2.4.36/tests/../servers/slapd/slapd -s0 -f
> /home/openldap-2.4.36/tests/testrun/slapd.1.conf -h ldap://localhost:9011/ -d
> 0x4105
>
> ./scripts/test000-rootdse: line 31: 19059 Aborted (core dumped)
> $SLAPD -f $CONF1 -h $URI1 -d $LVL $TIMING > $LOG1 2>&1
>
> Core file :
> bash-4.2# cat .gdbinit
> b mdb_db_open
> b mdb_env_open
> b mdb_env_open2
> b mdb_txn_begin
> b mdb_txn_renew0
> b mdb_dbi_open
> b mdb_cursor_init
> b mdb_cursor_set
> b mdb_page_search
> b mdb_page_get
> b mdb_page_search_root
> r -s0 -f /home/openldap-2.4.36/tests/testrun/slapd.1.conf -h
> ldap://localhost:9011/ -d 0x4105
>
>
> # Core was generated by `/home/openldap-2.4.36/tests/../servers/slapd/slapd -s0
> -f /home/openldap-2.4.36'.
> Program terminated with signal 6, Aborted.
> #0 0x00001fffff7adb70 in .raise () from /lib64/libc.so.6
> Missing separate debuginfos, use: debuginfo-install
> cyrus-sasl-lib-2.1.26-8.mcp8_0.2.ppc64 cyrus-sasl-md5-2.1.26-8.mcp8_0.2.ppc64
> glibc-2.17-4.mcp8_0.6.ppc64 keyutils-libs-1.5.5-4.mcp8_0.2.ppc64
> krb5-libs-1.11.3-1.mcp8_0.2.ppc64 libcom_err-1.42.7-2.mcp8_0.1.ppc64
> libdb-5.3.21-8.mcp8_0.4.ppc64 libselinux-2.1.13-15.mcp8_0.3.ppc64
> nss-softokn-freebl-3.14.3-1.mcp8_0.2.ppc64 openssl-libs-1.0.1e-4.mcp8_0.1.ppc64
> pcre-8.32-7.mcp8_0.2.ppc64 zlib-1.2.7-10.mcp8_0.1.ppc64
> (gdb) where
> #0 0x00001fffff7adb70 in .raise () from /lib64/libc.so.6
> #1 0x00001fffff7afb64 in .abort () from /lib64/libc.so.6
> #2 0x00001fffff7a455c in .__assert_fail_base () from /lib64/libc.so.6
> #3 0x00001fffff7a464c in .__assert_fail () from /lib64/libc.so.6
> #4 0x00000000101498cc in mdb_node_add (mc=0x3fffe89a7d40, indx=0,
> key=0x3fffe89a7d20, data=0x3fffe89a7d30, pgno=0, flags=2) at
> ./../../../libraries/liblmdb/mdb.c:6160
> #5 0x000000001014882c in mdb_cursor_put (mc=0x3fffe89a7d40, key=0x3fffe89a7d20,
> data=0x3fffe89a7d30, flags=2) at ./../../../libraries/liblmdb/mdb.c:5877
> #6 0x00000000101516a8 in mdb_dbi_open (txn=0x1000f675980, name=0x1027b9c8
> "ad2i", flags=262152, dbi=0x1fffff0800a0) at
> ./../../../libraries/liblmdb/mdb.c:7902
> #7 0x0000000010139cd4 in mdb_db_open (be=0x1000f4f83a0, cr=0x3fffe89a81c0) at
> init.c:207
> #8 0x0000000010050e34 in backend_startup_one (be=0x1000f4f83a0,
> cr=0x3fffe89a81c0) at backend.c:224
> #9 0x0000000010051588 in backend_startup (be=0x1000f4f83a0) at backend.c:325
> #10 0x0000000010089a7c in slap_startup (be=0x0) at init.c:219
> #11 0x000000001000a9c8 in main (argc=8, argv=0x3fffe89a8958) at main.c:991
>
>
>
> Here is the error message :
>
> #/home/openldap-2.4.36/tests/../servers/slapd/slapd -s0 -f
> /home/openldap-2.4.36/tests/testrun/slapd.1.conf -h ldap://localhost:9011/ -d
> 0x4105
> (...some messages...)
> 524a2fe1 mdb_db_open: database "o=OpenLDAP Project,l=Internet":
> dbenv_open(/home/openldap-2.4.36/tests/testrun/db.1.a).
> slapd: ./../../../libraries/liblmdb/mdb.c:6160: mdb_node_add: Assertion
> `mp->mp_pb.pb.pb_upper >= mp->mp_pb.pb.pb_lower' failed. < === fails in assert()
> ;
> Aborted (core dumped)
>
>
>
> Some of my observation :
>
> in this file libraries/liblmdb/mdb.c
> in X86 : rc = mdb_cursor_set(&mc, &key, &data, MDB_SET, &exact); the value of
> rc = MD_SUCCESS, but for ppc64 it is MDB_NOTFOUND. This is due to the fact that
> md_root != 2
>
> The value of md_root=2 for env->me_metas[1]->mm_dbs in X86 , but some huge value
> in ppc64. The value of md_pad = 4096 in x86 and 65536 in ppc64 .
>
> in x86:
>
> Breakpoint 2, mdb_txn_begin (env=0x9c5050, parent=0x0, flags=0,
> ret=0x7fffffffdf98) at ./../../../libraries/liblmdb/mdb.c:2219
> 2219 int rc, size, tsize = sizeof(MDB_txn);
> (gdb) p env->me_metas[1]->mm_dbs
> $1 = {{md_pad = 4096, md_flags = 8, md_depth = 0, md_branch_pages = 0,
> md_leaf_pages = 0, md_overflow_pages = 0, md_entries = 0, md_root =
> 18446744073709551615}, {md_pad = 0, md_flags = 0,
> md_depth = 1, md_branch_pages = 0, md_leaf_pages = 1, md_overflow_pages = 0,
> md_entries = 4, md_root = 2}}
> (gdb) p env->me_metas[0]->mm_dbs
> $2 = {{md_pad = 4096, md_flags = 8, md_depth = 0, md_branch_pages = 0,
> md_leaf_pages = 0, md_overflow_pages = 0, md_entries = 0, md_root =
> 18446744073709551615}, {md_pad = 0, md_flags = 0,
> md_depth = 0, md_branch_pages = 0, md_leaf_pages = 0, md_overflow_pages = 0,
> md_entries = 0, md_root = 18446744073709551615}}
>
>
> in ppc64:
>
> Breakpoint 2, mdb_txn_begin (env=0x10493ef0, parent=0x0, flags=0,
> ret=0x3fffffffe590) at ./../../../libraries/liblmdb/mdb.c:2219
> 2219 int rc, size, tsize = sizeof(MDB_txn);
> (gdb) p env->me_metas[0]->mm_dbs
> $1 = {{md_pad = 65536, md_flags = 8, md_depth = 0, md_branch_pages = 0,
> md_leaf_pages = 0, md_overflow_pages = 0, md_entries = 0, md_root =
> 18446744073709551615}, {md_pad = 0, md_flags = 0,
> md_depth = 0, md_branch_pages = 0, md_leaf_pages = 0, md_overflow_pages = 0,
> md_entries = 0, md_root = 18446744073709551615}}
> (gdb) p env->me_metas[1]->mm_dbs
> $2 = {{md_pad = 65536, md_flags = 8, md_depth = 0, md_branch_pages = 0,
> md_leaf_pages = 0, md_overflow_pages = 0, md_entries = 0, md_root =
> 18446744073709551615}, {md_pad = 0, md_flags = 0,
> md_depth = 0, md_branch_pages = 0, md_leaf_pages = 0, md_overflow_pages = 0,
> md_entries = 0, md_root = 18446744073709551615}}
>
>
>
>
> # From further investigation , the value of env->me_metas[1] is initialized in
> mdb_env_open2() at :
>
> p = (MDB_page *)env->me_map;
> env->me_metas[0] = METADATA(p);
> env->me_metas[1] = (MDB_meta *)((char *)env->me_metas[0] + meta.mm_psize);
>
> Here the meta.mm_psize in ppc64 is 65536 , hence there is some problem.. If the
> value of meta.mm_psize is 4096 , then everything works fine.
>
>
> As i dont have deep knowledge in openldap ,some help is needed.
>
> Thank you,
> Sumanth K
>
>
--
-- Howard Chu
CTO, Symas Corp. http://www.symas.com
Director, Highland Sun http://highlandsun.com/hyc/
Chief Architect, OpenLDAP http://www.openldap.org/project/
9 years, 11 months
(ITS#7713) Segmentation fault if the pagesize of the Operating system is not equal to 4096.
by sumantk2＠linux.vnet.ibm.com
Full_Name: sumanth k
Version: 2.4.35 to any recent version with mdb support
OS: Linux - ppc64
URL: ftp://ftp.openldap.org/incoming/
Submission from: (NULL) (122.248.161.59)
The pagesize of Linux for x86 and s390x architecture is 4096. Whereas in Powerpc
<ppc64> , the pagesize is by default 65536. So when the pagesize is not equal to
4096, the segmentation fault occurs. So tried to compile the powerpc64 kernel
with page size of 4096 and the problem disappears and runs smoothly. But by
default the powerpc64 architecture runs with 65536 pagesize . So there is some
problem in mdb_env_open2() function in mdb.c when the pagesize is not equal to
4096.
These are my observations :
Compiled the source with -O0 optimization .
/home/openldap-2.4.36/tests/../servers/slapd/slapd -s0 -f
/home/openldap-2.4.36/tests/testrun/slapd.1.conf -h ldap://localhost:9011/ -d
0x4105
./scripts/test000-rootdse: line 31: 19059 Aborted (core dumped)
$SLAPD -f $CONF1 -h $URI1 -d $LVL $TIMING > $LOG1 2>&1
Core file :
bash-4.2# cat .gdbinit
b mdb_db_open
b mdb_env_open
b mdb_env_open2
b mdb_txn_begin
b mdb_txn_renew0
b mdb_dbi_open
b mdb_cursor_init
b mdb_cursor_set
b mdb_page_search
b mdb_page_get
b mdb_page_search_root
r -s0 -f /home/openldap-2.4.36/tests/testrun/slapd.1.conf -h
ldap://localhost:9011/ -d 0x4105
# Core was generated by `/home/openldap-2.4.36/tests/../servers/slapd/slapd -s0
-f /home/openldap-2.4.36'.
Program terminated with signal 6, Aborted.
#0 0x00001fffff7adb70 in .raise () from /lib64/libc.so.6
Missing separate debuginfos, use: debuginfo-install
cyrus-sasl-lib-2.1.26-8.mcp8_0.2.ppc64 cyrus-sasl-md5-2.1.26-8.mcp8_0.2.ppc64
glibc-2.17-4.mcp8_0.6.ppc64 keyutils-libs-1.5.5-4.mcp8_0.2.ppc64
krb5-libs-1.11.3-1.mcp8_0.2.ppc64 libcom_err-1.42.7-2.mcp8_0.1.ppc64
libdb-5.3.21-8.mcp8_0.4.ppc64 libselinux-2.1.13-15.mcp8_0.3.ppc64
nss-softokn-freebl-3.14.3-1.mcp8_0.2.ppc64 openssl-libs-1.0.1e-4.mcp8_0.1.ppc64
pcre-8.32-7.mcp8_0.2.ppc64 zlib-1.2.7-10.mcp8_0.1.ppc64
(gdb) where
#0 0x00001fffff7adb70 in .raise () from /lib64/libc.so.6
#1 0x00001fffff7afb64 in .abort () from /lib64/libc.so.6
#2 0x00001fffff7a455c in .__assert_fail_base () from /lib64/libc.so.6
#3 0x00001fffff7a464c in .__assert_fail () from /lib64/libc.so.6
#4 0x00000000101498cc in mdb_node_add (mc=0x3fffe89a7d40, indx=0,
key=0x3fffe89a7d20, data=0x3fffe89a7d30, pgno=0, flags=2) at
./../../../libraries/liblmdb/mdb.c:6160
#5 0x000000001014882c in mdb_cursor_put (mc=0x3fffe89a7d40, key=0x3fffe89a7d20,
data=0x3fffe89a7d30, flags=2) at ./../../../libraries/liblmdb/mdb.c:5877
#6 0x00000000101516a8 in mdb_dbi_open (txn=0x1000f675980, name=0x1027b9c8
"ad2i", flags=262152, dbi=0x1fffff0800a0) at
./../../../libraries/liblmdb/mdb.c:7902
#7 0x0000000010139cd4 in mdb_db_open (be=0x1000f4f83a0, cr=0x3fffe89a81c0) at
init.c:207
#8 0x0000000010050e34 in backend_startup_one (be=0x1000f4f83a0,
cr=0x3fffe89a81c0) at backend.c:224
#9 0x0000000010051588 in backend_startup (be=0x1000f4f83a0) at backend.c:325
#10 0x0000000010089a7c in slap_startup (be=0x0) at init.c:219
#11 0x000000001000a9c8 in main (argc=8, argv=0x3fffe89a8958) at main.c:991
Here is the error message :
#/home/openldap-2.4.36/tests/../servers/slapd/slapd -s0 -f
/home/openldap-2.4.36/tests/testrun/slapd.1.conf -h ldap://localhost:9011/ -d
0x4105
(...some messages...)
524a2fe1 mdb_db_open: database "o=OpenLDAP Project,l=Internet":
dbenv_open(/home/openldap-2.4.36/tests/testrun/db.1.a).
slapd: ./../../../libraries/liblmdb/mdb.c:6160: mdb_node_add: Assertion
`mp->mp_pb.pb.pb_upper >= mp->mp_pb.pb.pb_lower' failed. < === fails in assert()
;
Aborted (core dumped)
Some of my observation :
in this file libraries/liblmdb/mdb.c
in X86 : rc = mdb_cursor_set(&mc, &key, &data, MDB_SET, &exact); the value of
rc = MD_SUCCESS, but for ppc64 it is MDB_NOTFOUND. This is due to the fact that
md_root != 2
The value of md_root=2 for env->me_metas[1]->mm_dbs in X86 , but some huge value
in ppc64. The value of md_pad = 4096 in x86 and 65536 in ppc64 .
in x86:
Breakpoint 2, mdb_txn_begin (env=0x9c5050, parent=0x0, flags=0,
ret=0x7fffffffdf98) at ./../../../libraries/liblmdb/mdb.c:2219
2219 int rc, size, tsize = sizeof(MDB_txn);
(gdb) p env->me_metas[1]->mm_dbs
$1 = {{md_pad = 4096, md_flags = 8, md_depth = 0, md_branch_pages = 0,
md_leaf_pages = 0, md_overflow_pages = 0, md_entries = 0, md_root =
18446744073709551615}, {md_pad = 0, md_flags = 0,
md_depth = 1, md_branch_pages = 0, md_leaf_pages = 1, md_overflow_pages = 0,
md_entries = 4, md_root = 2}}
(gdb) p env->me_metas[0]->mm_dbs
$2 = {{md_pad = 4096, md_flags = 8, md_depth = 0, md_branch_pages = 0,
md_leaf_pages = 0, md_overflow_pages = 0, md_entries = 0, md_root =
18446744073709551615}, {md_pad = 0, md_flags = 0,
md_depth = 0, md_branch_pages = 0, md_leaf_pages = 0, md_overflow_pages = 0,
md_entries = 0, md_root = 18446744073709551615}}
in ppc64:
Breakpoint 2, mdb_txn_begin (env=0x10493ef0, parent=0x0, flags=0,
ret=0x3fffffffe590) at ./../../../libraries/liblmdb/mdb.c:2219
2219 int rc, size, tsize = sizeof(MDB_txn);
(gdb) p env->me_metas[0]->mm_dbs
$1 = {{md_pad = 65536, md_flags = 8, md_depth = 0, md_branch_pages = 0,
md_leaf_pages = 0, md_overflow_pages = 0, md_entries = 0, md_root =
18446744073709551615}, {md_pad = 0, md_flags = 0,
md_depth = 0, md_branch_pages = 0, md_leaf_pages = 0, md_overflow_pages = 0,
md_entries = 0, md_root = 18446744073709551615}}
(gdb) p env->me_metas[1]->mm_dbs
$2 = {{md_pad = 65536, md_flags = 8, md_depth = 0, md_branch_pages = 0,
md_leaf_pages = 0, md_overflow_pages = 0, md_entries = 0, md_root =
18446744073709551615}, {md_pad = 0, md_flags = 0,
md_depth = 0, md_branch_pages = 0, md_leaf_pages = 0, md_overflow_pages = 0,
md_entries = 0, md_root = 18446744073709551615}}
# From further investigation , the value of env->me_metas[1] is initialized in
mdb_env_open2() at :
p = (MDB_page *)env->me_map;
env->me_metas[0] = METADATA(p);
env->me_metas[1] = (MDB_meta *)((char *)env->me_metas[0] + meta.mm_psize);
Here the meta.mm_psize in ppc64 is 65536 , hence there is some problem.. If the
value of meta.mm_psize is 4096 , then everything works fine.
As i dont have deep knowledge in openldap ,some help is needed.
Thank you,
Sumanth K
9 years, 11 months