Date: Sun, 20 Mar 2005 19:40:04 GMT From: Kyryll A Mirnenko <mirya@innovativemarketing.com.ua> To: freebsd-gnats-submit@FreeBSD.org Subject: kern/79058: floppy umount crash Message-ID: <200503201940.j2KJe4G2026401@www.freebsd.org> Resent-Message-ID: <200503201950.j2KJo2ls046973@freefall.freebsd.org>
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>Number: 79058
>Category: kern
>Synopsis: floppy umount crash
>Confidential: no
>Severity: non-critical
>Priority: low
>Responsible: freebsd-bugs
>State: open
>Quarter:
>Keywords:
>Date-Required:
>Class: sw-bug
>Submitter-Id: current-users
>Arrival-Date: Sun Mar 20 19:50:02 GMT 2005
>Closed-Date:
>Last-Modified:
>Originator: Kyryll A Mirnenko
>Release: 5.4-PRERELEASE
>Organization:
IMU
>Environment:
FreeBSD localhost 5.4-PRERELEASE FreeBSD 5.4-PRERELEASE #20: Sun Mar 13 19:07:18 EET 2005 root@localhost:/usr/src/sys/i386/compile/MY-O3 i386
>Description:
before umounting the floppy i have accidently removed it from the drive, then put it back & tried to umount (there were no attempts to flush disk buffers there while it was out of the drive). Got this:
fsync: giving up on dirty.
0xc16a5948: tag devfs, type VCHP, usecount 2, writecount 0, refcount 8
lock type devfs: EXCL (count 1)
by thread 0xc13e6960 (pid 557)
dev fd0
Fatal trap 12: page fault while in kernel mode
fault virtual address = 0x64
fault code = supervisor read, page not present
instruction pointer = 0x8:0xc0548077
stack pointer = 0x10:0xc7fdcc60
frame pointer = 0x10:0xc1650e10
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 = 561 (umount)
trap number = 12
panic: page fault
Fatal trap 12: page fault while in kernel mode
fault virtual address = 0x64
fault code = supervisor read, page not present
instruction pointer = 0x8:0xc0548077
stack pointer = 0x10:0xc7fdcaec
frame pointer = 0x10:0x0
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 = 561 (umount)
trap number = 12
panic: page fault
More info:
CPU: Pentium II/Pentium II Xeon/Celeron (400.91-MHz 686-class CPU)
Origin = "GenuineIntel" Id = 0x665 Stepping = 5
Features=0x183f9ff<FPU,VME,DE,PSE,TSC,MSR,PAE,MCE,CX8,SEP,MTRR,PGE,MCA,CMOV,PAT,PSE36,MMX,FXSR>
fdc0: <Enhanced floppy controller> at port 0x3f0-0x3f5 irq 6 drq 2 on isa0
fd0: <1440-KB 3.5" drive> on fdc0 drive 0
>How-To-Repeat:
as described above
>Fix:
>Release-Note:
>Audit-Trail:
>Unformatted:
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