Edit report at https://bugs.php.net/bug.php?id=52752&edit=1
ID: 52752
Comment by: jani dot ollikainen at mmd dot net
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:
This problem is wider than the report says! It's not just Centos 5 and 32bit.
Tested with 5.3.19, 5.4.9 and trunk 201212191230 and got bus error.
Suggested workaround by disabling mmap seems to work, so problem lies
in mmap handling. Real fix/patch would be nice and really appreciated.
5.3.19:
Core was generated by `sapi/cli/php test3.php'.
Program terminated with signal 7, Bus error.
#0 lex_scan (zendlval=<value optimized out>)
at Zend/zend_language_scanner.l:1709
1709 switch (*YYCURSOR++) {
(gdb) list
1704 }
1705
1706
1707 <ST_IN_SCRIPTING>"#"|"//" {
1708 while (YYCURSOR < YYLIMIT) {
1709 switch (*YYCURSOR++) {
1710 case '\r':
1711 if (*YYCURSOR == '\n') {
1712 YYCURSOR++;
1713 }
#0 lex_scan (zendlval=<value optimized out>)
at Zend/zend_language_scanner.l:1709
#1 0x0000000000636640 in zendlex (zendlval=0x7fff2476cb90)
at /root/php-5.3.19/Zend/zend_compile.c:4975
#2 0x0000000000620e66 in zendparse ()
at /root/php-5.3.19/Zend/zend_language_parser.c:3285
#3 0x000000000062bb52 in compile_file (file_handle=0x7fff2476ce80,
type=<value optimized out>) at Zend/zend_language_scanner.l:364
#4 0x00000000005362d1 in phar_compile_file (file_handle=0x7fff2476ce80,
type=2) at /root/php-5.3.19/ext/phar/phar.c:3394
#5 0x000000000062b3de in compile_filename (type=2, filename=0x185ac58)
at Zend/zend_language_scanner.l:407
#6 0x000000000067c63e in ZEND_INCLUDE_OR_EVAL_SPEC_CONST_HANDLER (
execute_data=0x7fe9b5916050)
at /root/php-5.3.19/Zend/zend_vm_execute.h:1967
#7 0x0000000000675a30 in execute (op_array=0x184f358)
at /root/php-5.3.19/Zend/zend_vm_execute.h:107
#8 0x000000000064f86f in zend_execute_scripts (type=8, retval=0x0,
file_count=3) at /root/php-5.3.19/Zend/zend.c:1259
#9 0x00000000005fcd67 in php_execute_script (primary_file=0x7fff24770780)
at /root/php-5.3.19/main/main.c:2316
#10 0x00000000006da002 in main (argc=2, argv=0x7fff24770a18)
at /root/php-5.3.19/sapi/cli/php_cli.c:1189
PHP 5.4.9:
Core was generated by `sapi/cli/php test3.php'.
Program terminated with signal 7, Bus error.
#0 lex_scan (zendlval=<value optimized out>)
at Zend/zend_language_scanner.l:1904
1904 switch (*YYCURSOR++) {
(gdb) list
1899 }
1900
1901
1902 <ST_IN_SCRIPTING>"#"|"//" {
1903 while (YYCURSOR < YYLIMIT) {
1904 switch (*YYCURSOR++) {
1905 case '\r':
1906 if (*YYCURSOR == '\n') {
1907 YYCURSOR++;
1908 }
(gdb) bt
#0 lex_scan (zendlval=<value optimized out>)
at Zend/zend_language_scanner.l:1904
#1 0x000000000063fd90 in zendlex (zendlval=0x7fff4739ebf0)
at /root/php-5.4.9/Zend/zend_compile.c:6707
#2 0x0000000000628ba4 in zendparse ()
at /root/php-5.4.9/Zend/zend_language_parser.c:3430
#3 0x0000000000634d4d in compile_file (file_handle=0x7fff4739ef40,
type=<value optimized out>) at Zend/zend_language_scanner.l:582
#4 0x0000000000539ae1 in phar_compile_file (file_handle=0x7fff4739ef40,
type=2) at /root/php-5.4.9/ext/phar/phar.c:3388
#5 0x00000000006344ae in compile_filename (type=2, filename=0x7f66ed826d20)
at Zend/zend_language_scanner.l:625
#6 0x00000000006acb6b in ZEND_INCLUDE_OR_EVAL_SPEC_CONST_HANDLER (
execute_data=0x7f66ed7ea060) at /root/php-5.4.9/Zend/zend_vm_execute.h:2608
#7 0x00000000006c98a0 in execute (op_array=0x7f66ed81f938)
at /root/php-5.4.9/Zend/zend_vm_execute.h:410
#8 0x00000000006608cd in zend_execute_scripts (type=8, retval=0x0,
file_count=3) at /root/php-5.4.9/Zend/zend.c:1309
#9 0x0000000000603e27 in php_execute_script (primary_file=0x7fff473a2680)
at /root/php-5.4.9/main/main.c:2482
#10 0x000000000070aeac in do_cli (argc=2, argv=0x7fff473a2a88)
at /root/php-5.4.9/sapi/cli/php_cli.c:988
#11 0x000000000070b608 in main (argc=2, argv=0x7fff473a2a88)
at /root/php-5.4.9/sapi/cli/php_cli.c:1364
trunk:
Core was generated by `sapi/cli/php test3.php'.
Program terminated with signal 7, Bus error.
#0 lex_scan (zendlval=<value optimized out>)
at Zend/zend_language_scanner.l:1917
1917 switch (*YYCURSOR++) {
(gdb) list
1912 }
1913
1914
1915 <ST_IN_SCRIPTING>"#"|"//" {
1916 while (YYCURSOR < YYLIMIT) {
1917 switch (*YYCURSOR++) {
1918 case '\r':
1919 if (*YYCURSOR == '\n') {
1920 YYCURSOR++;
1921 }
(gdb) bt
#0 lex_scan (zendlval=<value optimized out>)
at Zend/zend_language_scanner.l:1917
#1 0x0000000000641c30 in zendlex (zendlval=0x7fff34ca46c0)
at /root/php-trunk-201212191230/Zend/zend_compile.c:6881
#2 0x000000000062a713 in zendparse ()
at /root/php-trunk-201212191230/Zend/zend_language_parser.c:3428
#3 0x0000000000636d75 in compile_file (file_handle=0x7fff34ca4a30,
type=<value optimized out>) at Zend/zend_language_scanner.l:585
#4 0x000000000053a921 in phar_compile_file (file_handle=0x7fff34ca4a30,
type=2) at /root/php-trunk-201212191230/ext/phar/phar.c:3388
#5 0x000000000063641e in compile_filename (type=2, filename=0x7f6444584978)
at Zend/zend_language_scanner.l:628
#6 0x00000000006d48eb in ZEND_INCLUDE_OR_EVAL_SPEC_CONST_HANDLER (
execute_data=0x7f64445481e0)
at /root/php-trunk-201212191230/Zend/zend_vm_execute.h:2695
#7 0x00000000006d4b40 in execute_ex (execute_data=0x7f64445481e0)
at /root/php-trunk-201212191230/Zend/zend_vm_execute.h:356
#8 0x00000000006634d9 in zend_execute_scripts (type=8, retval=0x0,
file_count=3) at /root/php-trunk-201212191230/Zend/zend.c:1309
#9 0x0000000000605ed9 in php_execute_script (primary_file=0x7fff34ca8180)
at /root/php-trunk-201212191230/main/main.c:2468
#10 0x0000000000710d7c in do_cli (argc=2, argv=0x7fff34ca8588)
at /root/php-trunk-201212191230/sapi/cli/php_cli.c:988
#11 0x00000000007114d8 in main (argc=2, argv=0x7fff34ca8588)
at /root/php-trunk-201212191230/sapi/cli/php_cli.c:1364
Previous Comments:
------------------------------------------------------------------------
[2012-04-26 21:17:04] michael at vstadi dot com
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
------------------------------------------------------------------------
[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
[...]
------------------------------------------------------------------------
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