PHP out of memory taking out server after WHM update.

[zushiba]

I'm not sure what happened but with the recent update to whm my server is being taken out by PHP eating too much memory.
I don't really know how to zero in on what specific script is causing the problem but it's only been an issue since the update.
I know it's not a lot to go on but anyone have any clues or at least an idea how I can narrow down the culprit?


EDIT: Just tried to do an Easy Apache update just to make sure everything was kosher and got an out of memory error.

edit2: According to my host Exim is the culprit

Aug 12 18:00:37 null kernel: "echo 0 > /proc/sys/kernel/hung_task_timeout_secs"
disables this message.
Aug 12 18:00:37 null kernel: exim D ffff810002376420 0 4210 4208
(NOTLB)
Aug 12 18:00:37 null kernel: ffff8100281f1e88 xxxxxxxxxxxxxxxx - CC_FILTER ffffffff8002588d
ffff810002376d78
Aug 12 18:00:37 null kernel: ffff8100281f1e00 xxxxxxxxxxxxxxxx - CC_FILTER ffff8100531fb7a0 ffffffff80308b60
Aug 12 18:00:37 null kernel: 00013337827441b1 xxxxxxxxxxxxxxxx - CC_FILTERd ffff8100531fb988 0000000082583ecb
Aug 12 18:00:37 null kernel: Call Trace:
Aug 12 18:00:37 null kernel: [<ffffffff8002588d>] filldir+0x0/0xb7
Aug 12 18:00:37 null kernel: [<ffffffff8002588d>] filldir+0x0/0xb7
Aug 12 18:00:37 null kernel: [<ffffffff80063c6f>] __mutex_lock_slowpath+0x60/0x9b
Aug 12 18:00:37 null kernel: [<ffffffff80063cb9>] .text.lock.mutex+0xf/0x14
Aug 12 18:00:37 null kernel: [<ffffffff80035212>] vfs_readdir+0x5c/0xa9
Aug 12 18:00:37 null kernel: [<ffffffff80038ae2>] sys_getdents+0x75/0xbd
Aug 12 18:00:37 null kernel: [<ffffffff8005d229>] tracesys+0x71/0xe0
Aug 12 18:00:37 null kernel: [<ffffffff8005d28d>] tracesys+0xd5/0xe0
Aug 12 18:00:37 null kernel:
Aug 12 18:00:37 null kernel: INFO: task exim:4217 blocked for more than 120 seconds.


Aug 12 22:14:47 null kernel: Memory for crash kernel (0x0 to 0x0) notwithin perm
issible range

Not sure what's causing Exim to flip out but I ran /scripts/eximup --force and hope that'll do the job but if anyone has any idea why Exim would suddenly start flipping out I'd love to know.