Hi!
With only one connection to the page i get no segfault, but with 2 or more i get it.
Made a benchmark on the page with ab and not a single segfault on 10,000 requests.
Got it twice with 2 connections and 37 times with 50 connections. After that all
apache child processes had died.
Program received signal SIGSEGV, Segmentation fault.
[Switching to Thread 524321 (LWP 29953)]
0x4055a816 in shutdown_memory_manager (silent=0, clean_cache=0, tsrm_ls=0x41b01b50) at
/mnt/data1/Apps/CVS/PHP/php4/Zend/zend_alloc.c:461
461 REMOVE_POINTER_FROM_LIST(ptr);
(gdb) bt
#0 0x4055a816 in shutdown_memory_manager (silent=0, clean_cache=0,
tsrm_ls=0x41b01b50) at /mnt/data1/Apps/CVS/PHP/php4/Zend/zend_alloc.c:461
#1 0x4053aa8e in php_request_shutdown (dummy=0x0) at
/mnt/data1/Apps/CVS/PHP/php4/main/main.c:933
#2 0x4058a2be in php_apache_request_dtor (f=0x410e58d0, tsrm_ls=0x41b01b50) at
/mnt/data1/Apps/CVS/PHP/php4/sapi/apache2filter/sapi_apache2.c:380
#3 0x4058a531 in php_output_filter (f=0x410e58d0, bb=0x42114e78) at
/mnt/data1/Apps/CVS/PHP/php4/sapi/apache2filter/sapi_apache2.c:469
#4 0x080ba569 in ap_pass_brigade (next=0x410e58d0, bb=0x410e5a10) at util_filter.c:540
#5 0x080c0a99 in default_handler (r=0x410e4000) at core.c:3383
#6 0x080af9b9 in ap_run_handler (r=0x410e4000) at config.c:194
#7 0x080aff03 in ap_invoke_handler (r=0x410e4000) at config.c:401
#8 0x08086026 in ap_process_request (r=0x410e4000) at http_request.c:288
#9 0x080820fa in ap_process_http_connection (c=0x410e20d8) at http_core.c:293
#10 0x080b88f8 in ap_run_process_connection (c=0x410e20d8) at connection.c:85
#11 0x080b8b8f in ap_process_connection (c=0x410e20d8, csd=0x410e1ff8) at
connection.c:207
#12 0x080acc4b in process_socket (p=0x410e1fc0, sock=0x410e1ff8, my_child_num=0,
my_thread_num=30, bucket_alloc=0x831d688) at worker.c:632
#13 0x080ad257 in worker_thread (thd=0x8167a28, dummy=0x82d22c8) at worker.c:947
#14 0x401f89fe in dummy_worker (opaque=0x8167a28) at thread.c:127
#15 0x4026d048 in pthread_start_thread () from /lib/libpthread.so.0
#16 0x4026d08e in pthread_start_thread_event () from /lib/libpthread.so.0
(gdb) frame 0
#0 0x4055a816 in shutdown_memory_manager (silent=0, clean_cache=0,
tsrm_ls=0x41b01b50) at /mnt/data1/Apps/CVS/PHP/php4/Zend/zend_alloc.c:461
461 REMOVE_POINTER_FROM_LIST(ptr);
(gdb) p ptr
$4 = (zend_mem_header *) 0x412838e0
(gdb) bt full
#0 0x4055a816 in shutdown_memory_manager (silent=0, clean_cache=0,
tsrm_ls=0x41b01b50) at /mnt/data1/Apps/CVS/PHP/php4/Zend/zend_alloc.c:461
i = 1
j = 27
ptr = (zend_mem_header *) 0x412838e0
p = (zend_mem_header *) 0x1b
t = (zend_mem_header *) 0x40618de8
#1 0x4053aa8e in php_request_shutdown (dummy=0x0) at
/mnt/data1/Apps/CVS/PHP/php4/main/main.c:933
orig_bailout = {{__jmpbuf = {0, 0, 0, 0, 0, 0}, __mask_was_saved = 0,
__saved_mask = {__val = {0 <repeats 32 times>}}}}
orig_bailout_set = 0 '\0'
tsrm_ls = (void ***) 0x41b01b50
#2 0x4058a2be in php_apache_request_dtor (f=0x410e58d0, tsrm_ls=0x41b01b50) at
/mnt/data1/Apps/CVS/PHP/php4/sapi/apache2filter/sapi_apache2.c:380
tsrm_ls = (void ***) 0x41b01b50
#3 0x4058a531 in php_output_filter (f=0x410e58d0, bb=0x42114e78) at
/mnt/data1/Apps/CVS/PHP/php4/sapi/apache2filter/sapi_apache2.c:469
path = 0x410e5980 "/usr/local/www/httpd2/htdocs/home/top.php"
prebb = (apr_bucket_brigade *) 0x815c830
zfd = {type = 2 '\002', filename = 0x410e5980
"/usr/local/www/httpd2/htdocs/home/top.php",
opened_path = 0x4222d788 'Z' <repeats 44 times>, "\204Ì\217*", handle = {fd =
1109579712, fp = 0x4222d7c0}, free_filename = 0 '\0'}
ctx = (php_struct *) 0x410e5378
b = (apr_bucket *) 0x831d6a8
conf = (void *) 0x814f300
p = 0x815c830 "\030È\025\b"
tsrm_ls = (void ***) 0x41b01b50
#4 0x080ba569 in ap_pass_brigade (next=0x410e58d0, bb=0x410e5a10) at util_filter.c:540
e = (apr_bucket *) 0x41283890
next = (ap_filter_t *) 0x0
bb = (apr_bucket_brigade *) 0x412838e0
#5 0x080c0a99 in default_handler (r=0x410e4000) at core.c:3383
c = (conn_rec *) 0x410e20d8
bb = (apr_bucket_brigade *) 0x410e5a10
e = (apr_bucket *) 0x831d838
d = (core_dir_config *) 0x410e5778
errstatus = 1091459604
fd = (apr_file_t *) 0x410e5938
status = 1093154960
bld_content_md5 = 137484344
#6 0x080af9b9 in ap_run_handler (r=0x410e4000) at config.c:194
r = (request_rec *) 0x410e4000
pHook = (ap_LINK_handler_t *) 0x41283890
n = 11
rv = 1093154960
#7 0x080aff03 in ap_invoke_handler (r=0x410e4000) at config.c:401
r = (request_rec *) 0x410e4000
handler = 0x815c818 "application/x-httpd-php"
p = 0x41283890 "Üw\202û`ïX@9"
result = 0
old_handler = 0x0
#8 0x08086026 in ap_process_request (r=0x410e4000) at http_request.c:288
r = (request_rec *) 0x410e4000
access_status = 1093154960
#9 0x080820fa in ap_process_http_connection (c=0x410e20d8) at http_core.c:293
c = (conn_rec *) 0x410e20d8
r = (request_rec *) 0x410e4000
csd_set = 0
csd = (apr_socket_t *) 0x0
#10 0x080b88f8 in ap_run_process_connection (c=0x410e20d8) at connection.c:85
c = (conn_rec *) 0x410e20d8
pHook = (ap_LINK_process_connection_t *) 0x41283890
n = 0
rv = 1093154960
#11 0x080b8b8f in ap_process_connection (c=0x410e20d8, csd=0x410e1ff8) at
connection.c:207
c = (conn_rec *) 0x410e20d8
csd = (void *) 0x410e1ff8
#12 0x080acc4b in process_socket (p=0x410e1fc0, sock=0x410e1ff8, my_child_num=0,
my_thread_num=30, bucket_alloc=0x831d688) at worker.c:632
p = (apr_pool_t *) 0x410e1fc0
sock = (apr_socket_t *) 0x410e1ff8
my_child_num = 1093155040
my_thread_num = 0
current_conn = (conn_rec *) 0x410e20d8
conn_id = 1091444952
csd = 37
sbh = (ap_sb_handle_t *) 0x410e20d0
#13 0x080ad257 in worker_thread (thd=0x8167a28, dummy=0x82d22c8) at worker.c:947
dummy = (void *) 0x41283890
process_slot = 0
thread_slot = 30
csd = (apr_socket_t *) 0x410e1ff8
bucket_alloc = (apr_bucket_alloc_t *) 0x831d688
last_ptrans = (apr_pool_t *) 0x0
ptrans = (apr_pool_t *) 0x410e1fc0
rv = 1093154960
is_idle = 0
#14 0x401f89fe in dummy_worker (opaque=0x8167a28) at thread.c:127
opaque = (void *) 0x41283890
#15 0x4026d048 in pthread_start_thread () from /lib/libpthread.so.0
No symbol table info available.
#16 0x4026d08e in pthread_start_thread_event () from /lib/libpthread.so.0
No symbol table info available.
Regards
Magnus Määttä
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