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Negative vm_rss [message #8609]

Wed, 29 November 2006 09:02

rema
Messages: 17
Registered: November 2006

Junior Member

Hello there
I run and openvz based system for 14days now.
Yesterday this starts :

[root]# Nov 29 10:06:30 MYSYS kernel: Negative vm_rss: process pid 20999 comm avbasestest flags 4, vma e35c76f4 b7b26000-b7b43000 00000000 rss 1 freed 29
Nov 29 10:06:30 MYSYS kernel: flags 100075, ub 221
Nov 29 10:06:30 MYSYS kernel: [<c016966f>] warn_bad_zap+0xff/0x120
Nov 29 10:06:30 MYSYS kernel: [<c0169764>] unmap_page_range+0xd4/0xf0
Nov 29 10:06:30 MYSYS kernel: [<c01698a0>] unmap_vmas+0x120/0x250
Nov 29 10:06:30 MYSYS kernel: [<c016f601>] exit_mmap+0xa1/0x1a0
Nov 29 10:06:30 MYSYS kernel: [<c0128cd0>] mmput+0x60/0xb0
Nov 29 10:06:30 MYSYS kernel: [<c012efe1>] do_exit+0x181/0x560
Nov 29 10:06:30 MYSYS kernel: [<c012f4a0>] do_group_exit+0x40/0xb0
Nov 29 10:06:30 MYSYS kernel: [<c04d93e3>] syscall_call+0x7/0xb

Now the system crashed all vm's. Only a reboot of the hardwarenode was helpfull.

This is reproduceable while updateing aveserver-signatures.

HW-Node is running RH-Enterprise 4 2.6.9-023stab032.1-smp #1 SMP
VPS is running debian-sarge.

Can you give me hint what causes this crash.

Best rema.

UPDATE: user_baencounters of the vps running the aveserver-prozess
Version: 2.5
uid resource held maxheld barrier limit failcnt
221: kmemsize 5426114 5853361 92250112 101475123 0
lockedpages 0 0 4504 4504 0
privvmpages 150377 153989 254771 290248 0
shmpages 1294 1310 15477 15477 0
dummy 0 0 0 0 0
numproc 74 81 4000 4000 0
physpages 79850 80784 0 2147483647 0
vmguarpages 0 0 154771 2147483647 0
oomguarpages 79850 80784 154771 2147483647 0
numtcpsock 13 24 4000 4000 0
numflock 10 14 1000 1100 0
numpty 2 2 400 400 0
numsiginfo 0 2 1024 1024 0
tcpsndbuf 118508 441272 14366037 30750037 0
tcprcvbuf 212992 752320 14366037 30750037 0
othersockbuf 17188 468720 7183018 23567018 0
dgramrcvbuf 0 34300 7183018 7183018 0
numothersock 27 81 4000 4000 0
dcachesize 0 0 20149933 20754432 0
numfile 1941 2239 36032 36032 0
dummy 0 0 0 0 0
dummy 0 0 0 0 0
dummy 0 0 0 0 0
numiptent 10 10 200 200 0

[Updated on: Wed, 29 November 2006 09:10]

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Re: Negative vm_rss [message #8643 is a reply to message #8609]

Thu, 30 November 2006 06:59

Vasily Tarasov
Messages: 1345
Registered: January 2006

Senior Member

Hello,

This is a known bug, it is fixed in 2.6.9-023stab034.1, which is not released yet. However, this is the minor bug, so you can work smoothly with it before the new stable kernel will be released.

HTH,
Vasily.

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