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Posted to bugs@apr.apache.org by bu...@apache.org on 2015/10/06 10:16:19 UTC
[Bug 58483] New: Program terminated with signal SIGSEGV,
Segmentation fault.
https://bz.apache.org/bugzilla/show_bug.cgi?id=58483
Bug ID: 58483
Summary: Program terminated with signal SIGSEGV, Segmentation
fault.
Product: APR
Version: 1.5.3
Hardware: Other
OS: Linux
Status: NEW
Severity: normal
Priority: P2
Component: APR-util
Assignee: bugs@apr.apache.org
Reporter: patrick.baltz@eh-darmstadt.de
Hello,
we get sometimes a Segmentation Fault on our Linux Webserver.
a Debug with gdb give us this:
Core was generated by `/usr/sbin/apache2 -k start'.
Program terminated with signal SIGSEGV, Segmentation fault.
#0 find_block_of_size (size=size@entry=48, rmm=0x7f2b6b497148)
at /build/buildd/apr-util-1.5.3/misc/apr_rmm.c:106
106 if (blk->size == size)
The bug comes sometimes often and someimes there is nothing.
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[Bug 58483] Program terminated with signal SIGSEGV, Segmentation
fault.
Posted by bu...@apache.org.
https://bz.apache.org/bugzilla/show_bug.cgi?id=58483
--- Comment #7 from Ruediger Pluem <rp...@apache.org> ---
Thanks. Please also execute the following commands in addition:
print blk
print next
print *rmm->base
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[Bug 58483] Program terminated with signal SIGSEGV, Segmentation
fault.
Posted by bu...@apache.org.
https://bz.apache.org/bugzilla/show_bug.cgi?id=58483
--- Comment #1 from Patrick Baltz <pa...@eh-darmstadt.de> ---
The Linux is a Ubuntu Server 14.04.3 LTS,
and is running on VMWARE.
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[Bug 58483] Program terminated with signal SIGSEGV, Segmentation
fault.
Posted by bu...@apache.org.
https://bz.apache.org/bugzilla/show_bug.cgi?id=58483
--- Comment #8 from Patrick Baltz <pa...@eh-darmstadt.de> ---
(gdb) print blk
$1 = (struct rmm_block_t *) 0x7574d268c0879c3d
(gdb) print next
$2 = 8463481122625367093
(gdb) print *rmm->base
$3 = {abssize = 500000, firstused = 24, firstfree = 185896}
(gdb)
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[Bug 58483] Program terminated with signal SIGSEGV, Segmentation
fault.
Posted by bu...@apache.org.
https://bz.apache.org/bugzilla/show_bug.cgi?id=58483
Yann Ylavic <yl...@gmail.com> changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |ylavic.dev@gmail.com
--- Comment #3 from Yann Ylavic <yl...@gmail.com> ---
Could you please provide the full gdb backtrace with "thread apply all bt"?
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[Bug 58483] Program terminated with signal SIGSEGV, Segmentation
fault.
Posted by bu...@apache.org.
https://bz.apache.org/bugzilla/show_bug.cgi?id=58483
--- Comment #4 from Patrick Baltz <pa...@eh-darmstadt.de> ---
Thread 1 (Thread 0x7f2b6b4f3780 (LWP 6508)):
#0 find_block_of_size (size=size@entry=48, rmm=0x7f2b6b497148)
at /build/buildd/apr-util-1.5.3/misc/apr_rmm.c:106
blk = 0x7574d268c0879c3d
next = 8463481122625367093
best = 185896
bestsize = 3185506394507793239
#1 0x00007f2b6abfe2f8 in apr_rmm_calloc (rmm=0x7f2b6b497148,
reqsize=<optimized out>)
at /build/buildd/apr-util-1.5.3/misc/apr_rmm.c:342
size = 48
this = <optimized out>
#2 0x00007f2b64bcf0ba in util_ald_alloc (cache=0x7f2b6b387c88, size=48)
at util_ldap_cache_mgr.c:105
block = 8463481122625367093
#3 0x00007f2b64bcf85f in util_ald_cache_insert (cache=0x7f2b6b387c88,
payload=payload@entry=0x7fff6e2a1ea0) at util_ldap_cache_mgr.c:470
hashval = <optimized out>
tmp_payload = <optimized out>
node = <optimized out>
#4 0x00007f2b64bcc047 in uldap_cache_checkuserid (r=<optimized out>,
ldc=0x7f2b6b48d0a0,
url=<optimized out>, basedn=<optimized out>, scope=<optimized out>,
attrs=0x7f2b6b40a410,
filter=0x7fff6e2a1fc0 "(&(objectClass=*)(sAMAccountName=moritz.jirka))",
bindpw=0x7f2b6b3672c5 "929567", binddn=0x7fff6e2a1f60,
retvals=0x7f2b6b3672f0)
at util_ldap.c:1846
vals = 0x7f2b6b367368
numvals = 2
result = <optimized out>
res = 0x7f2b6d2d2af0
entry = 0x7f2b6d2d2af0
dn = <optimized out>
count = <optimized out>
failures = <optimized out>
curl = 0x7f2b6b38a1a8
curnode = {
url = 0x7f2b6b40a370
"ldap://de++++++++/ou=benutzer,dc=e+++,dc=local?sAMAccountName?sub?(objectClass=*)",
search_cache = 0x7f2b6a9c45e7 <apr_pmemdup+39>, compare_cache = 0x7f2b8fba80be,
dn_compare_cache = 0x7f2b6b36a0a0}
search_nodep = 0x0
the_search_node = {
username = 0x7fff6e2a1fc0
"(&(objectClass=*)(sAMAccountName=moritz.jirka))",
dn = 0x7f2b6b367310 "CN=Moritz
Jirka,OU=SozA_WS_2015,OU=WS2015,OU=Studenten,OU=Benutzer,DC=efhd,DC=local",
bindpw = 0x7f2b6b3672c5 "929567", lastbind = 1444059799669958,
vals = 0x7f2b6b367368, numvals = 2}
curtime = <optimized out>
st = <optimized out>
#5 0x00007f2b68f4d3ed in authn_ldap_check_password (r=0x7f2b6b36a0a0,
user=0x7f2b6b3672d0 "moritz.jirka", password=0x7f2b6b3672c5 "929567") at
mod_authnz_ldap.c:528
filtbuf =
"(&(objectClass=*)(sAMAccountName=moritz.jirka))\000\252r\177=\355\231\070\314M(g\342\264\257\342\004\305\316r\315\030\357ޒ\300F\311\374\022zk\350\301\303\177\356\n+5~\330\034\353\003\067\210\353\274K\326\346\032\363,\v\336`\021!w\001\350=T3c\340ʙ\f\233\342\202d_S\226\361)\036\302Df\020\024\331\031$iD\036C9\316
Dڿ\236\204\246u\203xY\233A\201]\002tg\235Ӗ4\310z\364Zw\005\262\246\364+4\326(\301M\347%!H\372\001\350\\\276pb\265^)\364\314\331$7Y\307\066XZ\325>q"...
sec = 0x7f2b6b409b08
ldc = 0x7f2b6b48d0a0
result = 0
remote_user_attribute_set = 0
dn = 0x7f2b6b367310 "CN=Moritz
Jirka,OU=SozA_WS_2015,OU=WS2015,OU=Studenten,OU=Benutzer,DC=efhd,DC=local"
---Type <return> to continue, or q <return> to quit---
#6 0x00007f2b6955b94e in authenticate_basic_user (r=0x7f2b6b36a0a0) at
mod_auth_basic.c:383
provider = 0x7f2b691518d0 <authn_ldap_provider>
conf = 0x7f2b6b367000
sent_user = 0x7f2b6b3672d0 "moritz.jirka"
sent_pw = 0x7f2b6b3672c5 "929567"
current_auth = <optimized out>
realm = 0x0
digest = 0x0
auth_result = <optimized out>
current_provider = 0x7f2b6b409af0
#7 0x00007f2b6b2bc250 in ap_run_check_user_id (r=0x7f2b6b36a0a0) at
request.c:81
pHook = 0x7f2b6b49e088
n = 1
rv = 1431252021
#8 0x00007f2b6b2bf1e2 in ap_process_request_internal
(r=r@entry=0x7f2b6b36a0a0) at request.c:273
file_req = <optimized out>
access_status = <optimized out>
d = <optimized out>
#9 0x00007f2b6b2db6a8 in ap_process_async_request (r=r@entry=0x7f2b6b36a0a0)
at http_request.c:315
access_status = -1
#10 0x00007f2b6b2db994 in ap_process_request (r=r@entry=0x7f2b6b36a0a0) at
http_request.c:363
bb = <optimized out>
b = <optimized out>
c = 0x7f2b6b381290
rv = <optimized out>
#11 0x00007f2b6b2d8432 in ap_process_http_sync_connection (c=0x7f2b6b381290) at
http_core.c:190
r = 0x7f2b6b36a0a0
cs = 0x0
csd = 0x7f2b6b3810a0
mpm_state = 1
#12 ap_process_http_connection (c=0x7f2b6b381290) at http_core.c:231
No locals.
#13 0x00007f2b6b2cf210 in ap_run_process_connection (c=0x7f2b6b381290) at
connection.c:41
pHook = 0x7f2b6b49de10
n = 0
rv = 1431252021
#14 0x00007f2b6b2cf5f8 in ap_process_connection (c=c@entry=0x7f2b6b381290,
csd=<optimized out>)
at connection.c:202
rc = <optimized out>
#15 0x00007f2b647bb767 in child_main (child_num_arg=child_num_arg@entry=17) at
prefork.c:704
current_conn = 0x7f2b6b381290
csd = 0x7f2b6b3810a0
thd = 0x7f2b6b3830a0
osthd = 139824460674944
ptrans = 0x7f2b6b381028
allocator = 0x7f2b6d2d22e0
status = <optimized out>
i = <optimized out>
lr = <optimized out>
pollset = 0x7f2b6b383158
sbh = 0x7f2b6b383150
bucket_alloc = 0x7f2b6b37d028
last_poll_idx = 1
lockfile = <optimized out>
#16 0x00007f2b647bb9a6 in make_child (s=0x7f2b6b4c1de0, slot=17) at
prefork.c:800
pid = 0
#17 0x00007f2b647bc60e in perform_idle_server_maintenance (p=<optimized out>)
at prefork.c:902
i = <optimized out>
idle_count = <optimized out>
ws = <optimized out>
free_length = <optimized out>
free_slots = {14, 17, 18, 19, 47, 48, 49, 50, 51, 52, 53, 54, 55, 56,
57, 58,
0 <repeats 16 times>}
last_non_dead = <optimized out>
total_non_dead = <optimized out>
#18 prefork_run (_pconf=<optimized out>, plog=<optimized out>, s=<optimized
out>) at prefork.c:1090
status = 0
pid = {pid = -1, in = 0x7f2b6b2e6608, out = 0xa, err = 0x7f2b6a9c4ff6
<find_entry+134>}
child_slot = <optimized out>
exitwhy = APR_PROC_EXIT
processed_status = <optimized out>
index = <optimized out>
remaining_children_to_start = 0
rv = <optimized out>
#19 0x00007f2b6b2ac8ae in ap_run_mpm (pconf=0x7f2b6b4f9028,
plog=0x7f2b6b4c7028, s=0x7f2b6b4c1de0)
at mpm_common.c:96
pHook = 0x7f2b6b49e268
n = 0
rv = 1431252021
#20 0x00007f2b6b2a6046 in main (argc=3, argv=0x7fff6e2a4638) at main.c:777
c = 0 '\000'
showcompile = 0
showdirectives = 0
confname = 0x7f2b6b2e5bc7 "apache2.conf"
def_server_root = 0x7f2b6b2e5bba "/etc/apache2"
temp_error_log = 0x0
error = <optimized out>
process = 0x7f2b6b4fb118
pconf = 0x7f2b6b4f9028
plog = 0x7f2b6b4c7028
ptemp = 0x7f2b6b4c3028
pcommands = 0x7f2b6b4d1028
opt = 0x7f2b6b4d1118
rv = <optimized out>
mod = 0x7f2b6b507160 <ap_prelinked_modules+64>
opt_arg = 0x7f2b6b4fb028 "(\360Ok+\177"
signal_server = <optimized out>
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[Bug 58483] Program terminated with signal SIGSEGV, Segmentation
fault.
Posted by bu...@apache.org.
https://bz.apache.org/bugzilla/show_bug.cgi?id=58483
--- Comment #9 from Ruediger Pluem <rp...@apache.org> ---
(In reply to Patrick Baltz from comment #8)
> (gdb) print blk
> $1 = (struct rmm_block_t *) 0x7574d268c0879c3d
> (gdb) print next
> $2 = 8463481122625367093
> (gdb) print *rmm->base
> $3 = {abssize = 500000, firstused = 24, firstfree = 185896}
> (gdb)
Looks like the rmm internal structures got corrupted somehow (next is far too
large), but currently I have no idea how this could have happened.
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[Bug 58483] Program terminated with signal SIGSEGV, Segmentation
fault.
Posted by bu...@apache.org.
https://bz.apache.org/bugzilla/show_bug.cgi?id=58483
--- Comment #2 from Patrick Baltz <pa...@eh-darmstadt.de> ---
*** Bug 58482 has been marked as a duplicate of this bug. ***
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[Bug 58483] Program terminated with signal SIGSEGV, Segmentation
fault.
Posted by bu...@apache.org.
https://bz.apache.org/bugzilla/show_bug.cgi?id=58483
--- Comment #5 from Ruediger Pluem <rp...@apache.org> ---
Can you please execute the following commands in gdb:
thread 1
frame 0
print *rmm
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[Bug 58483] Program terminated with signal SIGSEGV, Segmentation
fault.
Posted by bu...@apache.org.
https://bz.apache.org/bugzilla/show_bug.cgi?id=58483
--- Comment #6 from Patrick Baltz <pa...@eh-darmstadt.de> ---
The Password for the User moritz.jirka is only his Matrickel numer, there are
no special characters only 6 numbers.
Here are the output of the commands.
Core was generated by `/usr/sbin/apache2 -k start'.
Program terminated with signal SIGSEGV, Segmentation fault.
#0 find_block_of_size (size=size@entry=48, rmm=0x7f2b6b497148)
at /build/buildd/apr-util-1.5.3/misc/apr_rmm.c:106
106 if (blk->size == size)
(gdb) thread 1
[Switching to thread 1 (Thread 0x7f2b6b4f3780 (LWP 6508))]
#0 find_block_of_size (size=size@entry=48, rmm=0x7f2b6b497148)
at /build/buildd/apr-util-1.5.3/misc/apr_rmm.c:106
106 if (blk->size == size)
(gdb) frame 0
#0 find_block_of_size (size=size@entry=48, rmm=0x7f2b6b497148)
at /build/buildd/apr-util-1.5.3/misc/apr_rmm.c:106
106 if (blk->size == size)
(gdb) print *rmm
$1 = {p = 0x7f2b6b497028, base = 0x7f2b6b387008, size = 500000, lock = {type =
apr_anylock_none,
lock = {pm = 0x0, tm = 0x0, rw = 0x0}}}
(gdb)
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[Bug 58483] Program terminated with signal SIGSEGV, Segmentation
fault.
Posted by bu...@apache.org.
https://bz.apache.org/bugzilla/show_bug.cgi?id=58483
Rafael David Tinoco <ra...@canonical.com> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|NEW |RESOLVED
Resolution|--- |DUPLICATE
--- Comment #10 from Rafael David Tinoco <ra...@canonical.com> ---
*** This bug has been marked as a duplicate of bug 60296 ***
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