Edit report at https://bugs.php.net/bug.php?id=52752&edit=1
ID: 52752
Comment by: michael at vstadi dot com
Reported by: paulgao at yeah dot net
Summary: Program terminated with signal 7, Bus error.
Status: Feedback
Type: Bug
Package: Scripting Engine problem
Operating System: Centos 5 32bit
PHP Version: 5.3SVN-2010-08-31 (SVN)
Block user comment: N
Private report: N
New Comment:
We are experiencing the same thing:
CentOS5, Nginx 1.1.12, PHP-FPM 5.3.10, (extensions APC 3.1.9 and memcache 2.2.6)
Occasional SIGBUS, [26-Apr-2012 17:05:23] WARNING: [pool www] child 2562 exited
on signal 7 (SIGBUS - core dumped) after 84.407806 seconds from start
gdb core dump and backtrace:
Core was generated by `php-fpm:'.
Program terminated with signal 7, Bus error.
#0 lex_scan (zendlval=0x7fffd5e9fde8) at Zend/zend_language_scanner.c:943
943 if (yych != '<') goto yy4;
(gdb) bt
#0 lex_scan (zendlval=0x7fffd5e9fde8) at Zend/zend_language_scanner.c:943
#1 0x0000000000591ee0 in zendlex (zendlval=0x7fffd5e9fde0)
at /usr/src/debug/php-5.3.10/Zend/zend_compile.c:4975
#2 0x000000000057c6a6 in zendparse ()
at /usr/src/debug/php-5.3.10/Zend/zend_language_parser.c:3287
#3 0x0000000000587352 in compile_file (file_handle=0x7fffd5ea1360,
type=<value optimized out>) at Zend/zend_language_scanner.l:364
#4 0x00007f02feaf344f in my_compile_file (h=0x7fffd5ea1360, type=8)
at /usr/src/debug/php-pecl-apc-3.1.9/APC-3.1.9/apc_main.c:543
#5 0x00007f02f8b7f291 in phar_compile_file (file_handle=0x7fffd5ea1360,
type=8) at /usr/src/debug/php-5.3.10/ext/phar/phar.c:3393
#6 0x0000000000586bde in compile_filename (type=8, filename=0x2a97418)
at Zend/zend_language_scanner.l:407
#7 0x00000000005d8442 in ZEND_INCLUDE_OR_EVAL_SPEC_CV_HANDLER (
execute_data=0x294c6a8)
at /usr/src/debug/php-5.3.10/Zend/zend_vm_execute.h:22529
#8 0x00000000005d1770 in execute (op_array=0x2a43d58)
at /usr/src/debug/php-5.3.10/Zend/zend_vm_execute.h:107
#9 0x00000000005a197a in zend_call_function (fci=0x7fffd5ea16f0,
fci_cache=<value optimized out>)
at /usr/src/debug/php-5.3.10/Zend/zend_execute_API.c:969
#10 0x00000000004f6e33 in zif_call_user_func (ht=<value optimized out>,
return_value=0x2b39d68, return_value_ptr=<value optimized out>,
this_ptr=<value optimized out>, return_value_used=<value optimized out>)
at /usr/src/debug/php-5.3.10/ext/standard/basic_functions.c:4774
#11 0x00000000005fa0d8 in zend_do_fcall_common_helper_SPEC (
execute_data=<value optimized out>)
at /usr/src/debug/php-5.3.10/Zend/zend_vm_execute.h:320
#12 0x00000000005d1770 in execute (op_array=0x2a64df8)
at /usr/src/debug/php-5.3.10/Zend/zend_vm_execute.h:107
#13 0x00000000005ab2bd in zend_execute_scripts (type=8, retval=0x0,
file_count=3) at /usr/src/debug/php-5.3.10/Zend/zend.c:1236
#14 0x0000000000558558 in php_execute_script (primary_file=0x7fffd5ea3ea0)
at /usr/src/debug/php-5.3.10/main/main.c:2308
#15 0x000000000063e269 in main (argc=44076704, argv=0x2a08bc0)
at /usr/src/debug/php-5.3.10/sapi/fpm/fpm/fpm_main.c:1858
Previous Comments:
------------------------------------------------------------------------
[2012-02-08 09:58:10] vc at artstyle dot ru
About the only way - disable use of mmap() on PHP code files. Need to patch and
recompile. Something like this:
--- main/main.c~ 2012-02-08 06:00:52.000000000 +0400
+++ main/main.c 2012-02-08 06:01:28.000000000 +0400
@@ -1229,7 +1229,7 @@
/* can we mmap immeadiately? */
memset(&handle->handle.stream.mmap, 0,
sizeof(handle->handle.stream.mmap));
len = php_zend_stream_fsizer(stream TSRMLS_CC);
- if (len != 0
+ if (0 && len != 0
#if HAVE_MMAP
&& ((len - 1) % page_size) <= page_size - ZEND_MMAP_AHEAD
#endif
------------------------------------------------------------------------
[2012-02-07 18:57:30] mbreid at thepei dot com
I believe I'm running into this exact same error. I'm new to PHP-FPM (v5.3.9)
as well as GDB, so here's what I managed to pull from the "core dump" / gdb
backtrace log:
Core was generated by `php-fpm: pool www '.
Program terminated with signal 7, Bus error.
#0 lex_scan (zendlval=0x7fffbe65e368) at Zend/zend_language_scanner.l:1801
1801 if (*YYCURSOR == '\'') {
AND
#0 lex_scan (zendlval=0x7fffbe65e368) at Zend/zend_language_scanner.l:1801
#1 0x000000000076fe90 in zendlex (zendlval=0x7fffbe65e360)
at /usr/src/install/php-5.3.9/Zend/zend_compile.c:4975
#2 0x00000000007598ae in zendparse ()
at /usr/src/install/php-5.3.9/Zend/zend_language_parser.c:3285
#3 0x0000000000765268 in compile_file (file_handle=0x7fffbe65e6e0, type=2)
at Zend/zend_language_scanner.l:364
#4 0x00000000005ee40a in phar_compile_file (file_handle=<value optimized out>,
type=<value optimized out>) at
/usr/src/install/php-5.3.9/ext/phar/phar.c:3393
#5 0x00000000007b88ac in ZEND_INCLUDE_OR_EVAL_SPEC_TMP_HANDLER
(execute_data=0x31432a8)
at /usr/src/install/php-5.3.9/Zend/zend_vm_execute.h:5234
#6 0x00000000007ad538 in execute (op_array=0x32c4900)
at /usr/src/install/php-5.3.9/Zend/zend_vm_execute.h:107
#7 0x000000000078806a in zend_execute_scripts (type=8, retval=<value optimized
out>,
file_count=3) at /usr/src/install/php-5.3.9/Zend/zend.c:1236
#8 0x000000000073686d in php_execute_script (primary_file=<value optimized
out>)
at /usr/src/install/php-5.3.9/main/main.c:2308
#9 0x0000000000817545 in main (argc=<value optimized out>, argv=<value
optimized out>)
at /usr/src/install/php-5.3.9/sapi/fpm/fpm/fpm_main.c:1858
I'm running Ubuntu 10.10 (64-bit) -- Any ideas one what could be happening here
or ways to address this moving forward?
------------------------------------------------------------------------
[2011-12-22 23:56:52] vc at artstyle dot ru
Test case:
# cat test3.php
<?php
if ($argv[1] > 0) {
while ($argv[1]--) file_put_contents('test.tpl', "<?php #".str_repeat('A',
mt_rand(4000, 5000))." ?>\n", LOCK_EX);
} else {
$p2 = popen("php test3.php 100", "r");
while (1) include 'test.tpl';
}
?>
# php test3.php
Bus error
# php test3.php
Bus error
# php test3.php
Bus error
# php test3.php
PHP Parse error: syntax error, unexpected $end, expecting T_VARIABLE or
T_DOLLAR_OPEN_CURLY_BRACES or T_CURLY_OPEN in /var/tmp/test.tpl on line 1
Parse error: syntax error, unexpected $end, expecting T_VARIABLE or
T_DOLLAR_OPEN_CURLY_BRACES or T_CURLY_OPEN in /var/tmp/test.tpl on line 1
In my case it's an application (Bitrix) to blame. Ugly code that frequently
rewrites cached template in place, instead of creating new and renaming it.
------------------------------------------------------------------------
[2011-12-22 22:36:53] vc at artstyle dot ru
Same here. Apache doesn't matter, I've get this SIGBUS couple times a day. With
APC or xcache different versions,latest - all the same. PHP is stock Debian:
PHP 5.3.3-7+squeeze3 with Suhosin-Patch (cli) (built: Jun 28 2011 13:13:26)
Using fastcgi SAPI with pretty large PHP application (thousands of files).
I'll try to make it reproducible.
# gdb /usr/lib/cgi-bin/php5-fcgi ./3002.php5-fcgi.7.9143
[...]
Program terminated with signal 7, Bus error.
#0 lex_scan (zendlval=0xbfffa2ec) at
/build/buildd-php5_5.3.3-7+squeeze3-i386-H_HNTR/php5-5.3.3/Zend/zend_language_scanner.c:940
940 yych = *YYCURSOR;
(gdb) l
935 0, 0, 0, 0, 0, 0, 0, 0,
936 };
937
938 YYDEBUG(0, *YYCURSOR);
939 YYFILL(8);
940 yych = *YYCURSOR;
941 if (yych != '<') goto yy4;
942 YYDEBUG(2, *YYCURSOR);
943 yyaccept = 0;
944 yych = *(YYMARKER = ++YYCURSOR);
(gdb) p language_scanner_globals.yy_cursor
$1 = (unsigned char *) 0xb77c1000 <Address 0xb77c1000 out of bounds>
(gdb) inf target
Symbols from "/usr/lib/cgi-bin/php5-fcgi".
Local core dump file:
`/var/tmp/./3002.php5-fcgi.7.9143', file type elf32-i386.
[...]
0xb7759000 - 0xb7781000 is load52
0xb77c1000 - 0xb77c1000 is load53
0xb77c2000 - 0xb77c5000 is load54
[...]
------------------------------------------------------------------------
[2011-10-31 21:32:30] juraj at lutter dot sk
This same happens on Solaris 10/x86 with PHP 5.3.8 compiled using GCC4 and
using Apache 2.2.21.
root@[nwebs3 /var/crash/nwebs3]# pstack httpd-29691-cust_zend_apache3
core 'httpd-29691-cust_zend_apache3' of 29691: /opt/csw/apache2/sbin/httpd -f
/opt/csw/apache2/etc/httpd.conf -k star
fe0485d4 lex_scan (8046c74, 6c632f61, 746e6569, fe062825, 69762f63, 72656c6c)
+ 60
fe062863 zendlex (8046c70, 8045ae0, 8045690, fe04344b) + 4f
fe043ac2 zendparse (85af794, 2, 40, 2, 81c3ecc, 9) + 69a
fe047cd1 compile_file (8046e00, 8, 2, fe3630c8, 81f399c, 85b1265) + bd
fdd7706c sg_compile_file (8046e00, 8, 55, 0, fe3ae224, 31) + 20
fe0abaac ???????? (8047800, 81c3e12, 8046e98, fe3ae0c0, 88b39c8, 1007800)
fe0945d9 execute (81e10b4, 0, 2, 81c3ba8, 8046ecc, 8046ed4) + 195
fe074111 zend_execute_scripts (8, 0, 3, 0, 8047800, 0) + 129
fe0255af php_execute_script (8047800, 8380c78, 9c, fe0f72a9, fdc20000, 8000) +
1df
fe0f7508 ???????? (8386cd0, 25, 8386fb0, 8387f60)
0807cdce ap_run_handler (8386cd0, 3b, 8047ae8, 807d135, 11e1a300, 0) + 32
0807d19f ap_invoke_handler (8386cd0, 0, 8047b18, 80712de) + af
08087fdd ap_process_request (8386cd0, 4, 8386cd0, 8386cd0) + 18d
0808599d ap_process_http_connection (837cf40, 0, 8047b78, 8082aed) + f1
08082802 ap_run_process_connection (837cf40, 837cca8, 837cc68, 80bcdd8,
fec42c40, 0) + 32
0808c34a child_main (10, 808beb8, 1, 0) + 406
0808c52e make_child (fddc1a5e, feb7667a, fec43c80, 6, 0, fec43c80) + de
0808d0ae ap_mpm_run (80be830, 80ec8e8, 80c0728, 80c0728) + aea
0806c9e4 main (6, 8047e08, 8047e24) + 6f8
0806be7c _start (6, 8047ea8, 8047ec4, 8047ec7, 8047ee7, 8047eea) + 80
------------------------------------------------------------------------
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