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10th June 00:49
External User
Posts: 1
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#35278 : output_buffer set too low -> segfaulting Apache childs
From: maddog2k at maddog2k dot net
Operating system: Linux PHP version: 4CVS-2005-11-18 (snap) PHP Bug Type: Output Control Bug description: output_buffer set too low -> segfaulting Apache childs Description: ------------ Bug #35264 was fixed, but this introduced a new Apache child segmentation fault, under some conditions. With PHP 4.4.0 and below, the following would work correctly with Apache 2.0.54/.55 : AddOutputFilter INCLUDES .php AddType application/x-httpd-php .php Then having a .php that contains multiple (eg. 2) <!--#include virtual="/page.html" --> and for example about 24 thumbnails (of 4.0k each), you read a segfault of an Apache child process in the error_log and the page loading finishes and showing cut-off content. Like I said, the segfault happens since the fix for bug #35264, before it just didn't segfault but stopped loading. When changing output_buffer to 0 or Off, no difference. Only when I set output_buffer => 16384 in php.ini, the page loads completely. Strange thing here is that output buffering isn't used in the page at all, or SSI by default must use buffering... Seems to me that something has changed regarding buffering between 4.4.0 <-> higher versions. Like the memory get's full or so, cause when I delete a few lines of html-code in the page (random), it does load. Noe that this does like an Apache bug or so, but hence it only happens since PHP 4.4.1 Reproduce code: --------------- Hopefully, the description rings a bell at you guys  But possible if really needed. Expected result: ---------------- Page loads completely (100%) Actual result: -------------- Page loads not completely -- Edit bug report at http://bugs.php.net/?id=35278&edit=1 -- Try a CVS snapshot (php4): http://bugs.php.net/fix.php?id=35278&r=trysnapshot4 Try a CVS snapshot (php5.0): http://bugs.php.net/fix.php?id=35278&r=trysnapshot50 Try a CVS snapshot (php5.1): http://bugs.php.net/fix.php?id=35278&r=trysnapshot51 Fixed in CVS: http://bugs.php.net/fix.php?id=35278&r=fixedcvs Fixed in release: http://bugs.php.net/fix.php?id=35278&r=alreadyfixed Need backtrace: http://bugs.php.net/fix.php?id=35278&r=needtrace Need Reproduce Script: http://bugs.php.net/fix.php?id=35278&r=needscript Try newer version: http://bugs.php.net/fix.php?id=35278&r=oldversion Not developer issue: http://bugs.php.net/fix.php?id=35278&r=support Expected behavior: http://bugs.php.net/fix.php?id=35278&r=notwrong Not enough info: http://bugs.php.net/fix.php?id=35278&r=notenoughinfo Submitted twice: http://bugs.php.net/fix.php?id=35278&r=submittedtwice register_globals: http://bugs.php.net/fix.php?id=35278&r=globals PHP 3 support discontinued: http://bugs.php.net/fix.php?id=35278&r=php3 Daylight Savings: http://bugs.php.net/fix.php?id=35278&r=dst IIS Stability: http://bugs.php.net/fix.php?id=35278&r=isapi Install GNU Sed: http://bugs.php.net/fix.php?id=35278&r=gnused Floating point limitations: http://bugs.php.net/fix.php?id=35278&r=float No Zend Extensions: http://bugs.php.net/fix.php?id=35278&r=nozend MySQL Configuration Error: http://bugs.php.net/fix.php?id=35278&r=mysqlcfg |
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2
10th June 00:49
External User
Posts: 1
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#35278 : output_buffer set too low -> segfaulting Apache childs
ID: 35278
Updated by: sniper@php.net Reported By: maddog2k at maddog2k dot net -Status: Open +Status: Feedback Bug Type: Output Control Operating System: Linux PHP Version: 4CVS-2005-11-18 (snap) New Comment: Please try using this CVS snapshot: http://snaps.php.net/php5-latest.tar.gz For Windows: http://snaps.php.net/win32/php5-win32-latest.zip Previous Comments: ------------------------------------------------------------------------ [2005-11-18 16:33:34] maddog2k at maddog2k dot net Description: ------------ Bug #35264 was fixed, but this introduced a new Apache child segmentation fault, under some conditions. With PHP 4.4.0 and below, the following would work correctly with Apache 2.0.54/.55 : AddOutputFilter INCLUDES .php AddType application/x-httpd-php .php Then having a .php that contains multiple (eg. 2) <!--#include virtual="/page.html" --> and for example about 24 thumbnails (of 4.0k each), you read a segfault of an Apache child process in the error_log and the page loading finishes and showing cut-off content. Like I said, the segfault happens since the fix for bug #35264, before it just didn't segfault but stopped loading. When changing output_buffer to 0 or Off, no difference. Only when I set output_buffer => 16384 in php.ini, the page loads completely. Strange thing here is that output buffering isn't used in the page at all, or SSI by default must use buffering... Seems to me that something has changed regarding buffering between 4.4.0 <-> higher versions. Like the memory get's full or so, cause when I delete a few lines of html-code in the page (random), it does load. Noe that this does like an Apache bug or so, but hence it only happens since PHP 4.4.1 Reproduce code: --------------- Hopefully, the description rings a bell at you guys But possible if really needed. Expected result: ---------------- Page loads completely (100%) Actual result: -------------- Page loads not completely ------------------------------------------------------------------------ -- Edit this bug report at http://bugs.php.net/?id=35278&edit=1 |
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3
10th June 00:49
External User
Posts: 1
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#35278 : output_buffer set too low -> segfaulting Apache childs
ID: 35278
User updated by: maddog2k at maddog2k dot net Reported By: maddog2k at maddog2k dot net -Status: Feedback +Status: Open Bug Type: Output Control Operating System: Linux PHP Version: 4CVS-2005-11-18 (snap) New Comment: Unfortunately, no change... (php5-200511181330 -> 5.1.0RC7-dev) Previous Comments: ------------------------------------------------------------------------ [2005-11-18 16:33:57] sniper@php.net Please try using this CVS snapshot: http://snaps.php.net/php5-latest.tar.gz For Windows: http://snaps.php.net/win32/php5-win32-latest.zip ------------------------------------------------------------------------ [2005-11-18 16:33:34] maddog2k at maddog2k dot net Description: ------------ Bug #35264 was fixed, but this introduced a new Apache child segmentation fault, under some conditions. With PHP 4.4.0 and below, the following would work correctly with Apache 2.0.54/.55 : AddOutputFilter INCLUDES .php AddType application/x-httpd-php .php Then having a .php that contains multiple (eg. 2) <!--#include virtual="/page.html" --> and for example about 24 thumbnails (of 4.0k each), you read a segfault of an Apache child process in the error_log and the page loading finishes and showing cut-off content. Like I said, the segfault happens since the fix for bug #35264, before it just didn't segfault but stopped loading. When changing output_buffer to 0 or Off, no difference. Only when I set output_buffer => 16384 in php.ini, the page loads completely. Strange thing here is that output buffering isn't used in the page at all, or SSI by default must use buffering... Seems to me that something has changed regarding buffering between 4.4.0 <-> higher versions. Like the memory get's full or so, cause when I delete a few lines of html-code in the page (random), it does load. Noe that this does like an Apache bug or so, but hence it only happens since PHP 4.4.1 Reproduce code: --------------- Hopefully, the description rings a bell at you guys But possible if really needed. Expected result: ---------------- Page loads completely (100%) Actual result: -------------- Page loads not completely ------------------------------------------------------------------------ -- Edit this bug report at http://bugs.php.net/?id=35278&edit=1 |
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4
10th June 00:49
External User
Posts: 1
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#35278 : output_buffer set too low -> segfaulting Apache childs
ID: 35278
Updated by: sniper@php.net Reported By: maddog2k at maddog2k dot net Status: Open Bug Type: Output Control Operating System: Linux -PHP Version: 4CVS-2005-11-18 (snap) +PHP Version: 5CVS, 4CVS (2005-11-18) (snap) New Comment: Do us a favor and test with the latest PHP 5 snapshots from now on so we don't have to ask for that separately. Previous Comments: ------------------------------------------------------------------------ [2005-11-18 16:55:42] maddog2k at maddog2k dot net Unfortunately, no change... (php5-200511181330 -> 5.1.0RC7-dev) ------------------------------------------------------------------------ [2005-11-18 16:33:57] sniper@php.net Please try using this CVS snapshot: http://snaps.php.net/php5-latest.tar.gz For Windows: http://snaps.php.net/win32/php5-win32-latest.zip ------------------------------------------------------------------------ [2005-11-18 16:33:34] maddog2k at maddog2k dot net Description: ------------ Bug #35264 was fixed, but this introduced a new Apache child segmentation fault, under some conditions. With PHP 4.4.0 and below, the following would work correctly with Apache 2.0.54/.55 : AddOutputFilter INCLUDES .php AddType application/x-httpd-php .php Then having a .php that contains multiple (eg. 2) <!--#include virtual="/page.html" --> and for example about 24 thumbnails (of 4.0k each), you read a segfault of an Apache child process in the error_log and the page loading finishes and showing cut-off content. Like I said, the segfault happens since the fix for bug #35264, before it just didn't segfault but stopped loading. When changing output_buffer to 0 or Off, no difference. Only when I set output_buffer => 16384 in php.ini, the page loads completely. Strange thing here is that output buffering isn't used in the page at all, or SSI by default must use buffering... Seems to me that something has changed regarding buffering between 4.4.0 <-> higher versions. Like the memory get's full or so, cause when I delete a few lines of html-code in the page (random), it does load. Noe that this does like an Apache bug or so, but hence it only happens since PHP 4.4.1 Reproduce code: --------------- Hopefully, the description rings a bell at you guys But possible if really needed. Expected result: ---------------- Page loads completely (100%) Actual result: -------------- Page loads not completely ------------------------------------------------------------------------ -- Edit this bug report at http://bugs.php.net/?id=35278&edit=1 |
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5
10th June 01:13
External User
Posts: 1
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#35278 : output_buffer set too low -> segfaulting Apache childs
ID: 35278
Updated by: sniper@php.net Reported By: maddog2k at maddog2k dot net -Status: Open +Status: Assigned Bug Type: Output Control Operating System: Linux PHP Version: 5CVS, 4CVS (2005-11-18) (snap) -Assigned To: +Assigned To: iliaa New Comment: Ilia, this is pretty interesting. And on Linux.. Previous Comments: ------------------------------------------------------------------------ [2005-11-18 17:18:42] sniper@php.net Do us a favor and test with the latest PHP 5 snapshots from now on so we don't have to ask for that separately. ------------------------------------------------------------------------ [2005-11-18 16:55:42] maddog2k at maddog2k dot net Unfortunately, no change... (php5-200511181330 -> 5.1.0RC7-dev) ------------------------------------------------------------------------ [2005-11-18 16:33:57] sniper@php.net Please try using this CVS snapshot: http://snaps.php.net/php5-latest.tar.gz For Windows: http://snaps.php.net/win32/php5-win32-latest.zip ------------------------------------------------------------------------ [2005-11-18 16:33:34] maddog2k at maddog2k dot net Description: ------------ Bug #35264 was fixed, but this introduced a new Apache child segmentation fault, under some conditions. With PHP 4.4.0 and below, the following would work correctly with Apache 2.0.54/.55 : AddOutputFilter INCLUDES .php AddType application/x-httpd-php .php Then having a .php that contains multiple (eg. 2) <!--#include virtual="/page.html" --> and for example about 24 thumbnails (of 4.0k each), you read a segfault of an Apache child process in the error_log and the page loading finishes and showing cut-off content. Like I said, the segfault happens since the fix for bug #35264, before it just didn't segfault but stopped loading. When changing output_buffer to 0 or Off, no difference. Only when I set output_buffer => 16384 in php.ini, the page loads completely. Strange thing here is that output buffering isn't used in the page at all, or SSI by default must use buffering... Seems to me that something has changed regarding buffering between 4.4.0 <-> higher versions. Like the memory get's full or so, cause when I delete a few lines of html-code in the page (random), it does load. Noe that this does like an Apache bug or so, but hence it only happens since PHP 4.4.1 Reproduce code: --------------- Hopefully, the description rings a bell at you guys But possible if really needed. Expected result: ---------------- Page loads completely (100%) Actual result: -------------- Page loads not completely ------------------------------------------------------------------------ -- Edit this bug report at http://bugs.php.net/?id=35278&edit=1 |
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6
10th June 01:13
External User
Posts: 1
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#35278 : output_buffer set too low -> segfaulting Apache childs
ID: 35278
Updated by: iliaa@php.net Reported By: maddog2k at maddog2k dot net -Status: Assigned +Status: Closed Bug Type: Output Control Operating System: Linux PHP Version: 5CVS, 4CVS (2005-11-18) (snap) Assigned To: iliaa New Comment: This bug has been fixed in CVS. Snapshots of the sources are packaged every three hours; this change will be in the next snapshot. You can grab the snapshot at http://snaps.php.net/. Thank you for the report, and for helping us make PHP better. Give it 2-3 hours and grab the latest snapshot, it should resolve this issue. Previous Comments: ------------------------------------------------------------------------ [2005-11-18 17:19:09] sniper@php.net Ilia, this is pretty interesting. And on Linux.. ------------------------------------------------------------------------ [2005-11-18 17:18:42] sniper@php.net Do us a favor and test with the latest PHP 5 snapshots from now on so we don't have to ask for that separately. ------------------------------------------------------------------------ [2005-11-18 16:55:42] maddog2k at maddog2k dot net Unfortunately, no change... (php5-200511181330 -> 5.1.0RC7-dev) ------------------------------------------------------------------------ [2005-11-18 16:33:57] sniper@php.net Please try using this CVS snapshot: http://snaps.php.net/php5-latest.tar.gz For Windows: http://snaps.php.net/win32/php5-win32-latest.zip ------------------------------------------------------------------------ [2005-11-18 16:33:34] maddog2k at maddog2k dot net Description: ------------ Bug #35264 was fixed, but this introduced a new Apache child segmentation fault, under some conditions. With PHP 4.4.0 and below, the following would work correctly with Apache 2.0.54/.55 : AddOutputFilter INCLUDES .php AddType application/x-httpd-php .php Then having a .php that contains multiple (eg. 2) <!--#include virtual="/page.html" --> and for example about 24 thumbnails (of 4.0k each), you read a segfault of an Apache child process in the error_log and the page loading finishes and showing cut-off content. Like I said, the segfault happens since the fix for bug #35264, before it just didn't segfault but stopped loading. When changing output_buffer to 0 or Off, no difference. Only when I set output_buffer => 16384 in php.ini, the page loads completely. Strange thing here is that output buffering isn't used in the page at all, or SSI by default must use buffering... Seems to me that something has changed regarding buffering between 4.4.0 <-> higher versions. Like the memory get's full or so, cause when I delete a few lines of html-code in the page (random), it does load. Noe that this does like an Apache bug or so, but hence it only happens since PHP 4.4.1 Reproduce code: --------------- Hopefully, the description rings a bell at you guys But possible if really needed. Expected result: ---------------- Page loads completely (100%) Actual result: -------------- Page loads not completely ------------------------------------------------------------------------ -- Edit this bug report at http://bugs.php.net/?id=35278&edit=1 |
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7
10th June 02:10
External User
Posts: 1
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#35278 : output_buffer set too low -> segfaulting Apache childs
ID: 35278
User updated by: maddog2k at maddog2k dot net Reported By: maddog2k at maddog2k dot net Status: Closed Bug Type: Output Control Operating System: Linux PHP Version: 5CVS, 4CVS (2005-11-18) (snap) Assigned To: iliaa New Comment: Confirming the fix. Many thanks! Previous Comments: ------------------------------------------------------------------------ [2005-11-18 20:04:03] iliaa@php.net This bug has been fixed in CVS. Snapshots of the sources are packaged every three hours; this change will be in the next snapshot. You can grab the snapshot at http://snaps.php.net/. Thank you for the report, and for helping us make PHP better. Give it 2-3 hours and grab the latest snapshot, it should resolve this issue. ------------------------------------------------------------------------ [2005-11-18 17:19:09] sniper@php.net Ilia, this is pretty interesting. And on Linux.. ------------------------------------------------------------------------ [2005-11-18 17:18:42] sniper@php.net Do us a favor and test with the latest PHP 5 snapshots from now on so we don't have to ask for that separately. ------------------------------------------------------------------------ [2005-11-18 16:55:42] maddog2k at maddog2k dot net Unfortunately, no change... (php5-200511181330 -> 5.1.0RC7-dev) ------------------------------------------------------------------------ [2005-11-18 16:33:57] sniper@php.net Please try using this CVS snapshot: http://snaps.php.net/php5-latest.tar.gz For Windows: http://snaps.php.net/win32/php5-win32-latest.zip ------------------------------------------------------------------------ The remainder of the comments for this report are too long. To view the rest of the comments, please view the bug report online at http://bugs.php.net/35278 -- Edit this bug report at http://bugs.php.net/?id=35278&edit=1 |
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