Date: Sat, 15 Apr 2000 20:15:57 -0700 (PDT) From: mjacob@feral.com To: FreeBSD-gnats-submit@freebsd.org Subject: kern/18031: panic attempting to use AIO on alpha Message-ID: <200004160315.UAA00393@farrago.feral.com>
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>Number: 18031 >Category: kern >Synopsis: alpha system panics cpu_fork during AIO call >Confidential: no >Severity: serious >Priority: high >Responsible: freebsd-bugs >State: open >Quarter: >Keywords: >Date-Required: >Class: sw-bug >Submitter-Id: current-users >Arrival-Date: Sat Apr 15 20:20:01 PDT 2000 >Closed-Date: >Last-Modified: >Originator: Matthew Jacob >Release: FreeBSD 5.0-CURRENT alpha >Organization: Feral Software >Environment: See release above. Standard PC164 system with VFS_AIO optioned in. >Description: Running an app that does aio_writes to a file- in this case a raw device, panics in cpu_fork panic: cpu_fork: curproc panic Stopped at Debugger+0x2c: ldq ra,0(sp) <0xfffffe000a371bd0> <ra=0xfffffc00004d9700,sp=0xfffffe000a371bd0> db> t Debugger() at Debugger+0x2c panic() at panic+0x100 cpu_fork() at cpu_fork+0x140 vm_fork() at vm_fork+0x20c fork1() at fork1+0xa34 aio_newproc() at aio_newproc+0x24 aio_init_aioinfo() at aio_init_aioinfo+0x194 aio_aqueue() at aio_aqueue+0x34 aio_write() at aio_write+0x54 syscall() at syscall+0x244 XentSys() at XentSys+0x50 (null)() at 0x120006e94 db> c syncing disks... 10 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 1: dev:MFS0, flags:01020024, blkno:131136, lblkno:131136 2: dev:MFS0, flags:01020024, blkno:65600, lblkno:65600 giving up on 2 buffers Uptime: 34m51s dumping to dev #ad/1, offset 488656 Core dump and source to go with it available on request- heck, gdb -k even works on it. I just don't have time chase this myself. >How-To-Repeat: See above >Fix: >Release-Note: >Audit-Trail: >Unformatted: To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-bugs" in the body of the message
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