Messages in this thread | | | Date | Mon, 11 Aug 2003 09:34:43 +0200 | From | Harald Welte <> | Subject | 2.4.18/2.4.20 filemap.c pmd bug (was Re: Problem with mm in 2.4.19 and 2.4.20) |
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Przemys?aw Maciuszko wrote:
>I have a problem with one news server (feeder) box running INN. >Under heavy load i get the following error on the console: > >filemap.c:2084: bad pmd 2bc001e3 > >This showed few times during last few days and few times server 'hanged up' >after this.
I can confirm this problem. It happens on one of my newsservers as well, currently at least once per day. It is a dual PIII 650MHz, 1GB RAM, 200GB spool (scsi hardware raid array attached to adaptec aic7xxx), six seperate SCSI disks attached to a seperate aic7xxx controller for overview, running inn-2.3.2.
We've tried RedHat kernels 2.4.18-3, 2.4.18-17.7, 2.4.20-19.7 and 2.4.20-19.7bigmem as well as a kernel.org 2.4.20 - all with the same problem.
After the filemap.c / pmd_ERROR() printk, the box either hangs (no further printout, not that often) or has a stack overflow (most of the time):
filemap.c:2258: bad pmd c0003000(00000000000001e3). do_IRQ: stack overflow: -864 c0252845 fffffca0 206d6564 c2426000 00000000 c0117b20 c0101018 c024bd2c c2426000 00000018 00000018 00000000 c0117b20 c0101018 c2426470 6f6e0018 40320018 ffffff00 c0117b43 00000010 00000202 7369636e 3e65642e 613c200a Call Trace: [<c0117b20>] do_page_fault [kernel] 0x0 (0xc242634c)) [<c0117b20>] do_page_fault [kernel] 0x0 (0xc2426368)) [<c0117b43>] do_page_fault [kernel] 0x23 (0xc2426380)) [<c0117b20>] do_page_fault [kernel] 0x0 (0xc242645c)) [<c0108cc4>] error_code [kernel] 0x34 (0xc2426464)) [<c0117fc5>] do_page_fault [kernel] 0x4a5 (0xc2426498)) [<c0117b20>] do_page_fault [kernel] 0x0 (0xc2426574)) [<c0108cc4>] error_code [kernel] 0x34 (0xc242657c)) [<c0117fc5>] do_page_fault [kernel] 0x4a5 (0xc24265b0)) [<c0117b20>] do_page_fault [kernel] 0x0 (0xc242668c)) [<c0108cc4>] error_code [kernel] 0x34 (0xc2426694)) [<c0117fc5>] do_page_fault [kernel] 0x4a5 (0xc24266c8)) [<c0117b20>] do_page_fault [kernel] 0x0 (0xc24267a4)) [<c0108cc4>] error_code [kernel] 0x34 (0xc24267ac))
The messages are always preceded by a '(scsi0:A:0:0): Locking max tag count at 64' message. The scsi device number is changing, so it cannot be a single device
>Anyone has an idea what can cause it?
Unfortunately I'm not very familiar with the linux MM subsystem. But since I consider this now as a confirmed bug, maybe some of the other lkml folks have an idea what might be going on.
>I'm using Linux Debian on dual PIII 1.1Ghz, 1GB RAM, LVM version 1.0.6 >Qlogic FC 2200F driver version 6.01
We don't use lvm, so the similarities seem to be: Dual PIII, SCSI, INN
-- - Harald Welte <laforge@gnumonks.org> http://www.gnumonks.org/ ============================================================================ Programming is like sex: One mistake and you have to support it your lifetime [unhandled content-type:application/pgp-signature] | |