From owner-freebsd-current Tue May 11 15:26:10 1999 Delivered-To: freebsd-current@freebsd.org Received: from spinner.netplex.com.au (spinner.netplex.com.au [202.12.86.3]) by hub.freebsd.org (Postfix) with ESMTP id DC9F015903 for ; Tue, 11 May 1999 15:26:05 -0700 (PDT) (envelope-from peter@netplex.com.au) Received: from netplex.com.au (localhost [127.0.0.1]) by spinner.netplex.com.au (Postfix) with ESMTP id 172D71F73 for ; Wed, 12 May 1999 06:26:02 +0800 (WST) (envelope-from peter@netplex.com.au) X-Mailer: exmh version 2.0.2 2/24/98 To: current@freebsd.org Subject: problem with dev_t changes and pageout.. Date: Wed, 12 May 1999 06:26:02 +0800 From: Peter Wemm Message-Id: <19990511222604.172D71F73@spinner.netplex.com.au> Sender: owner-freebsd-current@FreeBSD.ORG Precedence: bulk X-Loop: FreeBSD.ORG It looks like something has come unstuck: Fatal trap 12: page fault while in kernel mode mp_lock = 00000002; cpuid = 0; lapic.id = 00000000 fault virtual address = 0x28 fault code = supervisor read, page not present instruction pointer = 0x8:0xc017bb67 stack pointer = 0x10:0xc5d97de4 frame pointer = 0x10:0xc5d97df0 code segment = base 0x0, limit 0xfffff, type 0x1b = DPL 0, pres 1, def32 1, gran 1 processor eflags = interrupt enabled, resume, IOPL = 0 current process = 2 (pagedaemon) interrupt mask = net bio cam <- SMP: XXX kernel: type 12 trap, code=0 Stopped at spec_strategy+0x93: movl 0x28(%edx),%eax ^^^^^^^^^^^ %edx = null db> trace spec_strategy(c5d97e1c) at spec_strategy+0x93 swap_pager_putpages(c02904fc,c5d97ecc,2,0,c5d97e60) at swap_pager_putpages+0x3e1 default_pager_putpages(c02904fc,c5d97ecc,2,0,c5d97e60) at default_pager_putpages+0x17 vm_pageout_flush(c5d97ecc,2,0,c5d97eb0,c02182cf) at vm_pageout_flush+0x91 vm_pageout_clean(c04d6b60,80000000,c013e290,2000,c5d97f78) at vm_pageout_clean+0x1f1 vm_pageout_scan(80000000,c02789c0,c02789c0,c5d97fac,c013e2c3) at vm_pageout_scan+0x45e vm_pageout(c5d8fdf7,c0255500,c02789c0,c020c640,c020c748) at vm_pageout+0x221 kproc_start(c02789c0) at kproc_start+0x33 fork_trampoline(10b8a0,d88e0000,18b8c08e,8e000000,24448be0) at fork_trampoline+0x30 db> ps pid proc addr uid ppid pgrp flag stat wmesg wchan cmd 438 c680da40 c6818000 495 282 277 000004 3 biord c332d9c0 p4d 437 c5d8c340 c6802000 433 417 415 004084 3 piperd c6760660 tee 436 c680dd00 c6810000 433 417 415 004004 3 biord c33626f8 p4 418 c680dba0 c6815000 433 415 415 004084 3 piperd c6760700 mail 417 c680de60 c680e000 433 415 415 004084 3 wait c680de60 sh [..] The offending line in spec_strategy is: (*bdevsw(bp->b_dev)->d_strategy)(bp); d_strategy was null.. I'm still looking. (I think this is the first time the box paged out since booting a few hours ago, it's got 128M, but p4d has got a lot of stuff to deal with and can hit a vsize of 70MB or so.) Cheers, -Peter To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-current" in the body of the message