Bug#785185: apache2-bin: mpm_worker: segfaults in modperl_interp_unselect()
I experience the same problem when using mpm_worker or mpm_event.
I have a more complete trace perhaps:
warning: core file may not match specified executable file.
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[Thread debugging using libthread_db enabled]
Using host libthread_db library "/lib/i386-linux-gnu/libthread_db.so.1".
Core was generated by `/usr/sbin/apache2 -k start'.
Program terminated with signal SIGSEGV, Segmentation fault.
#0 __GI___pthread_mutex_lock (mutex=0x21) at
../nptl/pthread_mutex_lock.c:66
66 ../nptl/pthread_mutex_lock.c: No such file or directory.
(gdb) bt full
#0 __GI___pthread_mutex_lock (mutex=0x21) at
../nptl/pthread_mutex_lock.c:66
__PRETTY_FUNCTION__ = "__pthread_mutex_lock"
type = <optimized out>
id = <optimized out>
#1 0xb7170142 in ?? () from /usr/lib/apache2/modules/mod_perl.so
No symbol table info available.
#2 0xb716f912 in modperl_interp_unselect () from
/usr/lib/apache2/modules/mod_perl.so
No symbol table info available.
#3 0xb75966ee in apr_pool_destroy () from
/usr/lib/i386-linux-gnu/libapr-1.so.0
No symbol table info available.
#4 0xb76c28c1 in eor_bucket_destroy (data=0xa055c058) at eor_bucket.c:90
r = 0xa055c058
#5 0xb76c29c9 in remove_empty_buckets (bb=0xa0c1f9f0) at core_filters.c:721
bucket = 0xa07182f8
#6 0xb76c30b1 in setaside_remaining_output (f=0x21, ctx=0x0,
bb=0xa0c1f9f0, c=<optimized out>, c=<optimized out>)
at core_filters.c:584
No locals.
#7 0xb76c3b30 in ap_core_output_filter (f=0xa0c1f520,
new_bb=0xa0c1f9f0) at core_filters.c:568
c = 0xa0c1f210
eor_buckets_in_brigade = 2001
#8 0xb76afec8 in ap_pass_brigade (next=0xa0c1f520, bb=0xa0c1f9f0) at
util_filter.c:590
e = <optimized out>
#9 0xb76ddf05 in ap_process_request_after_handler (r=0xa055c058) at
http_request.c:256
bb = 0xa0c1f9f0
c = 0xa0c1f210
#10 0xb76deaef in ap_process_request (r=0xa055c058) at http_request.c:363
bb = 0xa055c058
c = 0xa0c1f210
rv = 33
#11 0xb76db2ca in ap_process_http_sync_connection (c=<optimized out>) at
http_core.c:190
r = 0xa055c058
csd = 0xa0c1f060
mpm_state = 1
#12 ap_process_http_connection (c=0xa0c1f210) at http_core.c:231
No locals.
#13 0xb76d1de7 in ap_run_process_connection (c=0xa0c1f210) at
connection.c:41
pHook = <optimized out>
n = 4
rv = -1
#14 0xb76d2213 in ap_process_connection (c=0xa0c1f210, csd=0xa0c1f060)
at connection.c:203
rc = <optimized out>
#15 0xb7213341 in process_socket (bucket_alloc=0xa0718018,
my_thread_num=2, my_child_num=3, sock=<optimized out>, p=0xa0c1f018,
thd=0xb5f78e50) at worker.c:619
current_conn = 0xa0c1f210
conn_id = <optimized out>
sbh = 0xa0c1f208
#16 worker_thread (thd=0xb5f78e50, dummy=0xb1700468) at worker.c:978
ti = 0xb1700468
process_slot = 3
thread_slot = 2
csd = 0xa0c1f060
bucket_alloc = 0xa0718018
last_ptrans = <optimized out>
ptrans = 0xa0c1f018
rv = <optimized out>
is_idle = 0
#17 0xb75a1bde in ?? () from /usr/lib/i386-linux-gnu/libapr-1.so.0
No symbol table info available.
#18 0xb7567d97 in start_thread (arg=0xb02ffb40) at pthread_create.c:309
__res = <optimized out>
pd = 0xb02ffb40
unwind_buf = {cancel_jmp_buf = {{jmp_buf = {-1218998272,
-1339032768, 4001536, -1339034648, -961039805, 900405837},
mask_was_saved = 0}}, priv = {pad = {0x0, 0x0, 0x0, 0x0},
data = {prev = 0x0, cleanup = 0x0, canceltype = 0}}}
not_first_call = <optimized out>
pagesize_m1 = <optimized out>
sp = <optimized out>
freesize = <optimized out>
__PRETTY_FUNCTION__ = "start_thread"
#19 0xb74c4dfe in clone () at ../sysdeps/unix/sysv/linux/i386/clone.S:129
No locals.
Cheers
Sebastian
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