vboxwebsrv memory leak with phpvirtualbox

[vpaul]

I'm experienced the memory leak issue described in the phpvirtualbox wiki as others but I have NO samba pam module connected.

What steps will reproduce the problem?

1. Log in to phpvirtualbox.
2. Keep logged for a couple of hours.
3. Check server memory status, it leaks.

4. Do log off(File->Log out).
5. Do re-login and check memory status.
6. Expected size is reported until starting leak again.

The following workaround works for me:

1. Disable auth as describe in the wiki.(not disabling only pam module because I just have no samba).
2. Remove corresponding user/pass strings from the config.

What is the expected output? What do you see instead?

expected no memory leak.

What version of phpVirtualBox, VirtualBox, and PHP are you using? On what operating system?

OS Type: Linux (2.6.32-220.4.1.el6.x86_64) VirtualBox: 4.1.8 (75467) phpVirtualBox 4.1-7 PHP 5.3.3

It doesn't look like phpvirtualbox issue. If browser has been opened long enough it leads to the vboxwebsrv process dies:

Mar 23 06:12:08 vms kernel: vboxwebsrv invoked oom-killer: gfp_mask=0x84d0, order=0, oom_adj=0, oom_score_adj=0 Mar 23 06:12:08 vms kernel: vboxwebsrv cpuset=/ mems_allowed=0 Mar 23 06:12:08 vms kernel: Pid: 14644, comm: vboxwebsrv Not tainted 2.6.32-220.4.1.el6.x86_64 #1 Mar 23 06:12:08 vms kernel: Call Trace: Mar 23 06:12:08 vms kernel: [<ffffffff810c2b51>] ? cpuset_print_task_mems_allowed+0x91/0xb0 Mar 23 06:12:08 vms kernel: [<ffffffff811138d0>] ? dump_header+0x90/0x1b0 Mar 23 06:12:08 vms kernel: [<ffffffff8120d69c>] ? security_real_capable_noaudit+0x3c/0x70 Mar 23 06:12:08 vms kernel: [<ffffffff81113d5a>] ? oom_kill_process+0x8a/0x2c0 Mar 23 06:12:08 vms kernel: [<ffffffff81113c91>] ? select_bad_process+0xe1/0x120 Mar 23 06:12:08 vms kernel: [<ffffffff811141b0>] ? out_of_memory+0x220/0x3c0 Mar 23 06:12:08 vms kernel: [<ffffffff81123ece>] ? alloc_pages_nodemask+0x89e/0x940 Mar 23 06:12:08 vms kernel: [<ffffffff81158a1a>] ? alloc_pages_current+0xaa/0x110 Mar 23 06:12:08 vms kernel: [<ffffffff810471ab>] ? pte_alloc_one+0x1b/0x50 Mar 23 06:12:08 vms kernel: [<ffffffff811374b2>] ? pte_alloc+0x32/0x160 Mar 23 06:12:08 vms kernel: [<ffffffff811379ea>] ? copy_pte_range+0x40a/0x4e0 Mar 23 06:12:08 vms kernel: [<ffffffff81138969>] ? copy_page_range+0x2c9/0x480 Mar 23 06:12:08 vms kernel: [<ffffffff81067406>] ? dup_mm+0x316/0x520 Mar 23 06:12:08 vms kernel: [<ffffffff8106835c>] ? copy_process+0xcdc/0x1390 Mar 23 06:12:08 vms kernel: [<ffffffff81068aa4>] ? do_fork+0x94/0x480 Mar 23 06:12:08 vms kernel: [<ffffffff81080437>] ? do_sigaction+0x197/0x1d0 Mar 23 06:12:08 vms kernel: [<ffffffff810d4582>] ? audit_syscall_entry+0x272/0x2a0 Mar 23 06:12:08 vms kernel: [<ffffffff81009598>] ? sys_clone+0x28/0x30 Mar 23 06:12:08 vms kernel: [<ffffffff8100b413>] ? stub_clone+0x13/0x20 Mar 23 06:12:08 vms kernel: [<ffffffff8100b0f2>] ? system_call_fastpath+0x16/0x1b Mar 23 06:12:08 vms kernel: Mem-Info: Mar 23 06:12:08 vms kernel: Node 0 DMA per-cpu: Mar 23 06:12:08 vms kernel: CPU 0: hi: 0, btch: 1 usd: 0 Mar 23 06:12:08 vms kernel: CPU 1: hi: 0, btch: 1 usd: 0 Mar 23 06:12:08 vms kernel: Node 0 DMA32 per-cpu: Mar 23 06:12:08 vms kernel: CPU 0: hi: 186, btch: 31 usd: 0 Mar 23 06:12:08 vms kernel: CPU 1: hi: 186, btch: 31 usd: 30 Mar 23 06:12:08 vms kernel: active_anon:516949 inactive_anon:130236 isolated_anon:0 Mar 23 06:12:08 vms kernel: active_file:28 inactive_file:66 isolated_file:0 Mar 23 06:12:08 vms kernel: unevictable:0 dirty:2 writeback:0 unstable:0 Mar 23 06:12:08 vms kernel: free:13993 slab_reclaimable:2749 slab_unreclaimable:15980 Mar 23 06:12:08 vms kernel: mapped:43 shmem:1316 pagetables:10188 bounce:0 Mar 23 06:12:08 vms kernel: Node 0 DMA free:11232kB min:240kB low:300kB high:360kB active_anon:288kB inactive_anon:3 968kB active_file:0kB inactive_file:128kB unevictable:0kB isolated(anon):0kB isolated(file):0kB present:15300kB mlocked: 0kB dirty:0kB writeback:0kB mapped:16kB shmem:0kB slab_reclaimable:0kB slab_unreclaimable:16kB kernel_stack:0kB pagetabl es:44kB unstable:0kB bounce:0kB writeback_tmp:0kB pages_scanned:0 all_unreclaimable? yes Mar 23 06:12:08 vms kernel: lowmem_reserve[]: 0 2753 2753 2753 Mar 23 06:12:08 vms kernel: Node 0 DMA32 free:44740kB min:44812kB low:56012kB high:67216kB active_anon:2067508kB ina ctive_anon:516976kB active_file:112kB inactive_file:136kB unevictable:0kB isolated(anon):0kB isolated(file):0kB present: 2819476kB mlocked:0kB dirty:8kB writeback:0kB mapped:156kB shmem:5264kB slab_reclaimable:10996kB slab_unreclaimable:6390 4kB kernel_stack:1856kB pagetables:40708kB unstable:0kB bounce:0kB writeback_tmp:0kB pages_scanned:32 all_unreclaimable?

no

Mar 23 06:12:08 vms kernel: lowmem_reserve[]: 0 0 0 0 Mar 23 06:12:08 vms kernel: Node 0 DMA: 60*4kB 86*8kB 30*16kB 17*32kB 5*64kB 2*128kB 0*256kB 1*512kB 2*1024kB 3*2048 kB 0*4096kB = 11232kB Mar 23 06:12:08 vms kernel: Node 0 DMA32: 2301*4kB 885*8kB 245*16kB 141*32kB 154*64kB 44*128kB 4*256kB 1*512kB 1*102 4kB 1*2048kB 0*4096kB = 44812kB Mar 23 06:12:08 vms kernel: 6378 total pagecache pages Mar 23 06:12:08 vms kernel: 4927 pages in swap cache Mar 23 06:12:08 vms kernel: Swap cache stats: add 3582769, delete 3577842, find 237653/263285 Mar 23 06:12:08 vms kernel: Free swap = 0kB Mar 23 06:12:08 vms kernel: Total swap = 6635504kB Mar 23 06:12:08 vms kernel: 718720 pages RAM Mar 23 06:12:08 vms kernel: 13683 pages reserved Mar 23 06:12:08 vms kernel: 605701 pages shared Mar 23 06:12:08 vms kernel: 81955 pages non-shared Mar 23 06:12:08 vms kernel: [ pid ] uid tgid total_vm rss cpu oom_adj oom_score_adj name Mar 23 06:12:08 vms kernel: [ 558] 0 558 2782 0 1 -17 -1000 udevd Mar 23 06:12:08 vms kernel: [ 1391] 0 1391 2293 38 1 0 0 dhclient Mar 23 06:12:08 vms kernel: [ 1435] 0 1435 23306 34 1 -17 -1000 auditd Mar 23 06:12:08 vms kernel: [ 1460] 0 1460 63771 578 1 0 0 rsyslogd Mar 23 06:12:08 vms kernel: [ 1509] 32 1509 4756 15 1 0 0 rpcbind Mar 23 06:12:08 vms kernel: [ 1527] 29 1527 5800 1 0 0 0 rpc.statd Mar 23 06:12:08 vms kernel: [ 1560] 0 1560 7377 1 0 0 0 rpc.idmapd Mar 23 06:12:08 vms kernel: [ 1611] 81 1611 8606 623 0 0 0 dbus-daemon Mar 23 06:12:08 vms kernel: [ 1623] 0 1623 47285 1 0 0 0 cupsd Mar 23 06:12:08 vms kernel: [ 1648] 0 1648 1033 0 0 0 0 acpid Mar 23 06:12:08 vms kernel: [ 1657] 68 1657 6369 167 1 0 0 hald Mar 23 06:12:08 vms kernel: [ 1658] 0 1658 4540 1 0 0 0 hald-runner Mar 23 06:12:08 vms kernel: [ 1686] 0 1686 5076 1 0 0 0 hald-addon-inpu Mar 23 06:12:08 vms kernel: [ 1703] 68 1703 4465 1 1 0 0 hald-addon-acpi Mar 23 06:12:08 vms kernel: [ 1717] 57 1717 2138 23 0 0 0 usbhid-ups Mar 23 06:12:08 vms kernel: [ 1720] 57 1720 10252 16 0 0 0 upsd Mar 23 06:12:08 vms kernel: [ 1723] 0 1723 9704 3 1 0 0 upsmon Mar 23 06:12:08 vms kernel: [ 1725] 57 1725 9704 10 1 0 0 upsmon Mar 23 06:12:08 vms kernel: [ 1738] 0 1738 96440 31 0 0 0 automount Mar 23 06:12:08 vms kernel: [ 1880] 0 1880 19669 24 1 0 0 master Mar 23 06:12:08 vms kernel: [ 1898] 89 1898 19732 22 0 0 0 qmgr Mar 23 06:12:08 vms kernel: [ 1904] 0 1904 29710 1 1 0 0 abrtd Mar 23 06:12:08 vms kernel: [ 1912] 0 1912 2304 17 1 0 0 abrt-dump-oops Mar 23 06:12:08 vms kernel: [ 1920] 0 1920 59363 311 0 0 0 httpd Mar 23 06:12:08 vms kernel: [ 1939] 498 1939 83142 91 0 0 0 qpidd Mar 23 06:12:08 vms kernel: [ 1972] 0 1972 29312 23 1 0 0 crond Mar 23 06:12:08 vms kernel: [ 1983] 0 1983 5373 4 0 0 0 atd Mar 23 06:12:08 vms kernel: [ 1998] 0 1998 1029 1 0 0 0 mingetty Mar 23 06:12:08 vms kernel: [ 2000] 0 2000 1029 1 1 0 0 mingetty Mar 23 06:12:08 vms kernel: [ 2002] 0 2002 1029 1 1 0 0 mingetty Mar 23 06:12:08 vms kernel: [ 2008] 0 2008 1029 1 1 0 0 mingetty Mar 23 06:12:08 vms kernel: [ 2010] 0 2010 1029 1 1 0 0 mingetty Mar 23 06:12:08 vms kernel: [ 2017] 0 2017 258464 55 0 0 0 console-kit-dae Mar 23 06:12:08 vms kernel: [ 2104] 0 2104 1029 1 1 0 0 mingetty Mar 23 06:12:08 vms kernel: [ 3115] 0 3115 16018 17 1 0 0 sshd Mar 23 06:12:08 vms kernel: [ 4270] 0 4270 2781 0 1 -17 -1000 udevd Mar 23 06:12:08 vms kernel: [ 4271] 0 4271 2781 0 0 -17 -1000 udevd Mar 23 06:12:08 vms kernel: [14591] 75 14591 2429078 602348 0 0 0 vboxwebsrv Mar 23 06:12:08 vms kernel: [14594] 75 14594 47039 26 1 0 0 VBoxXPCOMIPCD Mar 23 06:12:08 vms kernel: [14599] 75 14599 183188 257 1 0 0 VBoxSVC Mar 23 06:12:08 vms kernel: [19192] 48 19192 62645 3727 0 0 0 httpd Mar 23 06:12:08 vms kernel: [18104] 48 18104 63779 4954 0 0 0 httpd Mar 23 06:12:08 vms kernel: [18147] 48 18147 63779 4956 1 0 0 httpd Mar 23 06:12:08 vms kernel: [18189] 48 18189 63779 4957 1 0 0 httpd Mar 23 06:12:08 vms kernel: [18233] 48 18233 63779 4957 1 0 0 httpd Mar 23 06:12:08 vms kernel: [18568] 48 18568 63779 4957 0 0 0 httpd Mar 23 06:12:08 vms kernel: [18593] 48 18593 63779 4957 1 0 0 httpd Mar 23 06:12:08 vms kernel: [27382] 89 27382 19689 202 0 0 0 pickup Mar 23 06:12:08 vms kernel: [ 985] 48 985 64037 5044 0 0 0 httpd Mar 23 06:12:08 vms kernel: Out of memory: Kill process 14591 (vboxwebsrv) score 956 or sacrifice child Mar 23 06:12:08 vms kernel: Killed process 14591, UID 75, (vboxwebsrv) total-vm:9716312kB, anon-rss:2409380kB, file- rss:12kB