apache gento bufferoverflow

xirtan · n00b Joined: 31 May 2005 Posts: 3

i have an amd64 2GB RAM and 2GB of swap ,with gentoo and apache , and my apache is getting killed due to excessive memory consumption .... it uses all RAM and swap....
any idea?

bone · Posted: Tue May 31, 2005 7:13 pm Post subject:

How do you consider this a bufferoverflow? Heck, how do you even think we can help without any log file entries. First of all, what is killing the process? What do your log files say for the system during this time? For apache during this time? (please only paste information from the logs pertaining to the apache/killing issue and not others, so that the pastes are not cluttered). Have you searched the bugzilla system at all? Could this possibly be a known issue with AMD64?

jt

xirtan · n00b Joined: 31 May 2005 Posts: 3

May 18 23:03:58 webserver1 oom-killer: gfp_mask=0xd2
May 18 23:03:58 webserver1 DMA per-cpu:
May 18 23:03:58 webserver1 cpu 0 hot: low 2, high 6, batch 1
May 18 23:03:58 webserver1 cpu 0 cold: low 0, high 2, batch 1
May 18 23:03:58 webserver1 Normal per-cpu:
May 18 23:03:58 webserver1 cpu 0 hot: low 32, high 96, batch 16
May 18 23:03:58 webserver1 cpu 0 cold: low 0, high 32, batch 16
May 18 23:03:58 webserver1 HighMem per-cpu: empty
May 18 23:03:58 webserver1
May 18 23:03:58 webserver1 Free pages: 14064kB (0kB HighMem)
May 18 23:03:58 webserver1 Active:249996 inactive:250524 dirty:0 writeback:0 unstable:0 free:3516 slab:2624 mapped:501914 pagetables:3378
May 18 23:03:58 webserver1 DMA free:8168kB min:44kB low:52kB high:64kB active:3240kB inactive:1604kB present:16384kB pages_scanned:9319 all_unreclaimable? yes
May 18 23:03:58 webserver1 lowmem_reserve[]: 0 2031 2031
May 18 23:03:58 webserver1 Normal free:5896kB min:5744kB low:7180kB high:8616kB active:996744kB inactive:1000492kB present:2080512kB pages_scanned:8806577 all_unreclaimable? yes
May 18 23:03:58 webserver1 lowmem_reserve[]: 0 0 0
May 18 23:03:58 webserver1 HighMem free:0kB min:128kB low:160kB high:192kB active:0kB inactive:0kB present:0kB pages_scanned:0 all_unreclaimable? no
May 18 23:03:58 webserver1 lowmem_reserve[]: 0 0 0
May 18 23:03:58 webserver1 DMA: 0*4kB 1*8kB 0*16kB 1*32kB 1*64kB 1*128kB 1*256kB 1*512kB 1*1024kB 1*2048kB 1*4096kB = 8168kB
May 18 23:03:58 webserver1 Normal: 54*4kB 2*8kB 36*16kB 19*32kB 6*64kB 0*128kB 0*256kB 0*512kB 0*1024kB 0*2048kB 1*4096kB = 5896kB
May 18 23:03:58 webserver1 HighMem: empty
May 18 23:03:58 webserver1 Swap cache: add 2275833, delete 2275833, find 1988042/2106356, race 0+67
May 18 23:03:58 webserver1 Free swap = 0kB
May 18 23:03:58 webserver1 Total swap = 2000052kB
May 18 23:03:58 webserver1 Out of Memory: Killed process 29965 (apache2).

i've looked for and this is not an amd64 prob or memory module (at least in found nothing in any forum or site in google)
but found the same problem (as memory leak) in some posts in other sites , but no solution for them too.

bone · Posted: Wed Jun 01, 2005 2:35 am Post subject:

I am going to have to say its definately an issue with the AMD64 & oom-killer kernel function. When googling for amd64+oom-killer I find the following occurances which tend to make me think that alot of things are having problems.

http://www.google.com/search?hl=en&q=amd64+oom-killer

Have you tried switching kernel versions?

jt