/wp-admin/admin.php: Setting 'memory_limit' makes Admin inaccessible

[mastermind]

After upgrading an older blog to 3.1, I could not enter the admin area of the site in question.

I was able to track it down to the following lines in /wp-admin/admin.php:

if ( current_user_can( 'manage_options' ) )
	@ini_set( 'memory_limit', apply_filters( 'admin_memory_limit', '256M' ) );

Commenting these lines makes WP's admin area accessible again.

Removing the @ before ini_set while having WP_DEBUG set to true doesn't throw any errors.

I have no special setup (can post vHost config, if necessary). My machine is a Ubuntu 10.04 LTS, with a distro-provided LAMP stack. The global php.ini is nothing special, either.

I have disabled all plugins, just to see. But to no avail.

For now, I can only keep these lines deactivated.

[ocean90]

Can you take a look at your apache error log, seems to be a duplicate of #13847.

[mastermind]

True, this is a duplicate. Disabling Suhosin fixes it.

Sorry, I overlooked the respective bug when searching for 'memory_limit'.

However, I will not disable Suhosin, I'd rather live with a patched WordPress.

[hakre]

Replying to mastermind:

However, I will not disable Suhosin, I'd rather live with a patched WordPress.

Next to disabling suhosin or patching wordpress, you can configure suhosin as well: ​suhosin.memory_limit (More Info: ​Mysteries about the WordPress Memory Limit)

[mastermind]

Replying to hakre:

Next to disabling suhosin or patching wordpress, you can configure suhosin as well: ​suhosin.memory_limit

That helped, thanks!